Stator

Abstract

The invention provides a stator capable of suppressing connection failure between a connection-type coil and a connection member. The stator is provided with: a plurality of connection-type coils; and a tubular connection member that connects two adjacent connection-type coils. First protrusions are provided on both side surfaces of the tip of the connection-type coil, respectively. The upper surface and the lower surface of the front end part are respectively provided with a second convex part. The distance (Xc) between the upper surface of the first projection (110A) and the upper surface of the first projection (110B) is greater than the distance (Xd) between the two corresponding first inner side surfaces of the tubular connection member. The distance (Yc) between the upper surface of the second projection (120A) and the upper surface of the second projection (120B) is greater than the distance (Yd) between the two corresponding second inner side surfaces of the tubular connection member.

Description

Technical Field

[0001] This invention relates to a stator for a rotary electric motor. Background Technology

[0002] Previously, a stator having multiple interconnected coils has been proposed. As an example of such a stator, Patent Document 1 discloses a stator having multiple segmented coils connected by connecting members.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2019-126153 Summary of the Invention

[0004] In stators with this type of connecting coil, it is necessary to sufficiently suppress connection failures between the connecting coil and the connecting components.

[0005] The present invention provides a stator capable of suppressing connection failure between the connecting coil and the connecting component.

[0006] The stator involved in this invention comprises:

[0007] Multiple interconnected coils; and

[0008] A tubular connecting component that connects two adjacent connecting coils.

[0009] Multiple connecting coils have front ends that can be inserted into tubular connecting components.

[0010] The front end has at least two sides, a top surface, and a bottom surface.

[0011] The two sides at the front end are each provided with a first protrusion.

[0012] The upper and lower surfaces of the front end are each provided with a second protrusion.

[0013] The tubular connecting component has two opposing first inner surfaces and two opposing second inner surfaces.

[0014] The distance Xc between the upper surface of the first protrusion on one side of the front end and the upper surface of the first protrusion on the other side of the front end is greater than the distance Xd between the corresponding two first inner surfaces of the tubular connecting member.

[0015] The distance Yc between the upper surface of the second protrusion on the upper surface of the front end and the upper surface of the second protrusion on the lower surface of the front end is greater than the distance Yd between the corresponding two second inner surfaces of the tubular connecting member.

[0016] It can be as follows: the second protrusion can be positioned closer to the front end of the connecting coil than the first protrusion, and the front end is inserted into the tubular connecting member so that each first protrusion is at least partially in contact with the first inner surface of the corresponding tubular connecting member.

[0017] Optionally, it can be as follows: the first protrusion can be located at a position closer to the front end of the connecting coil than the second protrusion, and the front end is inserted into the tubular connecting member so that each second protrusion is at least partially in contact with the second inner surface of the corresponding tubular connecting member.

[0018] It can be as follows: the front end of the connecting coil and the tubular connecting component are oriented along the rotation axis Ax of the stator.

[0019] Invention Effects

[0020] This invention provides a stator capable of suppressing connection failures between the connecting coil and the connecting components. Attached Figure Description

[0021] Figure 1 This is a perspective view showing an example of the stator involved in the present invention.

[0022] Figure 2 This is an exploded view showing a portion of the stator involved in the present invention.

[0023] Figure 3 This is a perspective view showing the connecting coil and tubular connecting component involved in the present invention.

[0024] Figure 4 This is a top view showing the upper surface of the connecting coil and tubular connecting component involved in the present invention.

[0025] Figure 5 This is a side view showing one side of the connecting coil and tubular connecting component involved in the present invention.

[0026] Figure 6 This is a diagram showing the upper surface and side surface of the connecting coil and tubular connecting components. Detailed Implementation

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Figure 1 This is a perspective view showing an example of the stator 1 according to the present invention. The stator 1 is the stator of a rotating electric motor. The stator 1 includes a plurality of interconnected coils 10 and a plurality of tubular connecting components. Figure 1 As shown, the front end of the connecting coil 10 is oriented along the rotation axis Ax of the stator 1. The connecting coil 10 can have an upper and lower surface of any shape, such as a U-shape or a mountain shape.

[0028] Figure 2 This is an exploded view showing a portion of stator 1. For example... Figure 2 As shown, two adjacent connecting coils 10 are connected by a tubular connecting member 20. Similar to the front end of the connecting coil 10, the tubular connecting member 20 is oriented along the rotation axis Ax of the stator 1.

[0029] Figure 3 This is a perspective view showing one end of the connecting coil 10 and the tubular connecting member 20. The multiple connecting coils 10 are conductive components formed of a conductive material such as metal. Each connecting coil 10 has a front end portion 11 that is inserted into the tubular connecting member 20. The front end portion 11 has at least two sides, an upper surface, and a lower surface. The other end of the connecting coil 10 has the same shape as the first end.

[0030] The tubular connecting member 20 is a conductive component that connects two adjacent connecting coils 10. The tubular connecting member 20 is formed of a conductive material such as metal (e.g., copper). In addition, the outer surface of the tubular connecting member 20 is insulated.

[0031] Figure 4 This is a top view showing one end of the connecting coil 10 and the upper surface of the tubular connecting member 20. Figure 5 This is a side view showing one end of the connecting coil 10 and one side of the tubular connecting member 20. Figure 4 and Figure 5 The dashed line shown represents the inner surface of the tubular connecting component 20.

[0032] like Figure 4 As shown, the two sides of the front end portion 11 of the connecting coil 10 are respectively provided with first protrusions 110A and 110B. Figure 5 As shown, the upper and lower surfaces of the front end portion 11 of the connecting coil 10 are respectively provided with second protrusions 120A and 120B. In this embodiment, the second protrusions 120A and 120B are located closer to the front end of the connecting coil 10 than the first protrusions 110A and 110B.

[0033] The tubular connecting member 20 has two opposing first inner surfaces 210A, 210B and two opposing second inner surfaces 220A, 220B.

[0034] like Figure 4 As shown, the front end portion 11 of the connecting coil 10 and the tubular connecting member 20 are configured such that the distance Xc between the upper surface of the first protrusion 110A on one side of the front end portion 11 and the upper surface of the first protrusion 110B on the other side of the front end portion 11 is greater than the distance Xd between the corresponding two first inner sides 210A and 210B of the tubular connecting member 20.

[0035] And, as Figure 5 As shown, the front end portion 11 of the connecting coil 10 and the tubular connecting member 20 are formed such that the distance Yc between the upper surface of the second protrusion 120A on the upper surface of the front end portion 11 and the upper surface of the second protrusion 120B on the lower surface of the front end portion 11 is greater than the distance Yd between the corresponding two second inner surfaces 220A and 220B of the tubular connecting member 20.

[0036] Figure 6 This is a diagram showing the upper surface and side surface of the connecting coil 10 and the tubular connecting member 20, indicating the state of connection between the connecting coil 10 and the tubular connecting member 20. Figure 6 The dashed lines shown represent the inner surface of the tubular connecting member 20 and the front end 11 of the connecting coil 10 inside the tubular connecting member 20.

[0037] like Figure 6 As shown, the front end 11 of the connecting coil 10 is inserted into the tubular connecting member 20 so that each of the first protrusions 110A, 110B is at least partially in contact with the first inner surface 210A, 210B of the corresponding tubular connecting member 20.

[0038] As described above, the stator 1 includes a plurality of interconnected coils 10 and a tubular connecting member 20 connecting two adjacent interconnected coils 10. The plurality of interconnected coils 10 each has a front end portion 11 inserted into the tubular connecting member 20. The front end portion 11 has at least two side surfaces, an upper surface, and a lower surface. The two side surfaces of the front end portion 11 are respectively provided with first protrusions 110A and 110B. The upper and lower surfaces of the front end portion 11 are respectively provided with second protrusions 120A and 120B. The tubular connecting member 20 has two opposing first inner side surfaces 210A and 210B and two opposing second inner side surfaces 220A and 220B. The distance Xc between the upper surface of the first protrusion 110A on one side of the front end portion 11 and the upper surface of the first protrusion 110B on the other side of the front end portion 11 is greater than the distance Xd between the corresponding two first inner side surfaces 210A and 210B of the tubular connecting member 20. The distance Yc between the upper surface of the second protrusion 120A on the upper surface of the front end 11 and the upper surface of the second protrusion 120B on the lower surface of the front end 11 is greater than the distance Yd between the corresponding two second inner surfaces 220A and 220B of the tubular connecting member 20.

[0039] By adopting this structure, such as Figure 6As shown, when the front end 11 of the connecting coil 10 is pressed into the tubular connecting member 20, the first protrusions 110A and 110B of the connecting coil 10 cause the first inner surfaces 210A and 210B of the tubular connecting member 20 to expand. Furthermore, the second protrusions 120A and 120B of the connecting coil 10 cause the second inner surfaces 220A and 220B of the tubular connecting member 20 to expand. This generates a mechanical fastening force, thus preventing the front end 11 of the connecting coil 10 from detaching from the tubular connecting member 20.

[0040] Furthermore, the second protrusions 120A and 120B are positioned further from the front end of the connecting coil 10 than the first protrusions 110A and 110B. The front end portion 11 is inserted into the tubular connecting member 20 so that each of the first protrusions 110A and 110B is at least partially in contact with the first inner surface 210A and 210B of the corresponding tubular connecting member 20.

[0041] By adopting this structure, such as Figure 6 As shown, if the front end 11 of the connecting coil 10 is pressed into the tubular connecting member 20, inclined portions 21A and 21B are formed in the tubular connecting member 20 on the side opposite to the front end of the connecting coil 10 due to the force required by the tubular connecting member 20 to maintain its circumference. When a force is applied to the front end 11 of the connecting coil 10 to cause it to detach from the tubular connecting member 20, the inner surfaces of the inclined portions 21A and 21B are engaged with the second protrusions 120A and 120B of the connecting coil 10, thus preventing the front end 11 of the connecting coil 10 from detaching from the tubular connecting member 20.

[0042] Furthermore, the front end portion 11 of the connecting coil 10 and the tubular connecting member 20 are oriented along the rotation axis Ax of the stator 1. Thus, by applying an external force along the rotation axis Ax of the stator 1, the front end portion 11 of the connecting coil 10 can be pressed into the tubular connecting member 20.

[0043] This invention is not limited to the embodiments described above, and appropriate modifications can be made without departing from the spirit of the invention. For example, in other embodiments, the first protrusions 110A and 110B of the front end portion 11 of the connecting coil 10 may be positioned further towards the front end of the connecting coil 10 than the second protrusions 120A and 120B. In this case, the front end portion 11 is inserted into the tubular connecting member 20 such that each of the second protrusions 120A and 120B at least partially contacts the second inner surface 220A and 220B of the corresponding tubular connecting member 20.

[0044] Symbol Explanation

[0045] 1-Stator, 10-Connecting coil, 11-Front end, 110A-First protrusion, 110B-First protrusion, 120A-Second protrusion, 120B-Second protrusion, 20-Tube connecting component, 21A-Inclined portion, 21B-Inclined portion, 210A-First inner surface, 210B-First inner surface, 220A-Second inner surface, 220B-Second inner surface, Ax-Rotation axis, Xc-Distance, Xd-Distance, Yc-Distance.

Claims

1. A stator, characterized in that, have: Multiple interconnected coils; and A tubular connecting component that connects two adjacent connecting coils. The plurality of interconnected coils have front ends that are inserted into the tubular connecting member. The front end portion has at least two sides, an upper surface, and a lower surface. The front end has a first protrusion on each of its two sides. The upper and lower surfaces of the front end are respectively provided with a second protrusion. The tubular connecting component has two opposing first inner surfaces and two opposing second inner surfaces. The distance Xc between the upper surface of the first protrusion on one side of the front end and the upper surface of the first protrusion on the other side of the front end is greater than the distance Xd between the corresponding two first inner sides of the tubular connecting member. The distance Yc between the upper surface of the second protrusion on the upper surface of the front end and the upper surface of the second protrusion on the lower surface of the front end is greater than the distance Yd between the corresponding two second inner surfaces of the tubular connecting member.

2. The stator according to claim 1, characterized in that, The second protrusion is positioned closer to the front end of the connecting coil than the first protrusion. The front end is inserted into the tubular connecting member so that each of the first protrusions at least partially contacts the first inner surface of the corresponding tubular connecting member.

3. The stator according to claim 1, characterized in that, The first protrusion is positioned closer to the front end of the connecting coil than the second protrusion. The front end is inserted into the tubular connecting member so that each of the second protrusions at least partially contacts the second inner surface of the corresponding tubular connecting member.

4. The stator according to any one of claims 1 to 3, characterized in that, The front end of the connecting coil and the tubular connecting component are oriented along the rotation axis Ax of the stator.

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