stata

Abstract

To provide a stator capable of suppressing the loss of connection between the linked coil and the connecting member. [Solution] The stator 1 comprises a plurality of linked coils 10 and a tubular connecting member 20 that connects two adjacent linked coils 10. Two sides of the tip portion 11 of the linked coil 10 are provided with first protrusions 110A and 110B, respectively. The upper and lower surfaces of the tip portion 11 are provided with second protrusions 120A and 120B, respectively. The distance Xc between the upper surface of the first protrusion 110A and the upper surface of the first protrusion 110B is greater than the distance Xd between the two corresponding first inner surfaces 210A and 210B of the tubular connecting member 20. The distance Yc between the upper surface of the second protrusion 120A and the upper surface of the second protrusion 120B is greater than the distance Yd between the two corresponding second inner surfaces 220A and 220B of the tubular connecting member 20.

Description

Technical Field

[0001] The present disclosure relates to a stator of a rotating electrical machine.

Background Art

[0002] Conventionally, a stator having a plurality of connected coils has been proposed. As an example of such a stator, Patent Document 1 discloses a stator having a plurality of segment coils connected by a connecting member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a stator having a connected coil, it has been required to sufficiently suppress the disconnection between the connected coil and the connecting member.

[0005] <00000J8>The present disclosure provides a stator capable of suppressing the disconnection between a connected coil and a connecting member.

Means for Solving the Problems

[0006] The stator according to the present disclosure includes a plurality of connected coils, and a tubular connecting member that connects two adjacent connected coils, the plurality of connected coils include tip portions inserted into the tubular connecting member,}<O000037> the tip portions have at least two side faces, an upper face, and a lower face, first convex portions are provided on the two side faces of the tip portions, respectively, second convex portions are provided on the upper face and the lower face of the tip portions, respectively, The tubular connecting member 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 tip and the upper surface of the first protrusion on the other side of the tip is greater than the distance Xd between the two corresponding first inner surfaces of the tubular connecting member. The distance Yc between the upper surface of the second protrusion on the upper surface of the tip and the upper surface of the second protrusion on the lower surface of the tip is greater than the distance Yd between the two corresponding second inner surfaces of the tubular connecting member.

[0007] The second protrusion can be provided closer to the tip of the connecting coil than the first protrusion, and the tip of each of the first protrusions can be inserted into the tubular connecting member such that it at least partially contacts the first inner surface of the corresponding tubular connecting member.

[0008] Alternatively, the first protrusion may be located closer to the tip of the connecting coil than the second protrusion, and the tip of each of the second protrusions may be inserted into the tubular connecting member such that it at least partially contacts the second inner surface of the corresponding tubular connecting member.

[0009] The tip of the connected coil and the tubular connecting member can be oriented in the direction of the stator's rotation axis Ax. [Effects of the Invention]

[0010] This disclosure makes it possible to provide a stator capable of suppressing the loss of connection between the connected coil and the connecting member. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing an example of a statist related to this disclosure. [Figure 2] This is an exploded view showing a portion of the stata related to this disclosure. [Figure 3] This is a perspective view showing the connected coil and tubular connecting member related to this disclosure. [Figure 4]It is a top view showing the upper surfaces of the connected coil and the tubular connecting member according to the present disclosure. [Figure 5] It is a side view showing one side surface of the connected coil and the tubular connecting member according to the present disclosure. [Figure 6] It is a view showing the upper surface and the side surface in a state where the connected coil and the tubular connecting member are connected.

Mode for Carrying Out the Invention

[0012] Hereinafter, an embodiment according to the present disclosure will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of the stator 1 according to the present disclosure. The stator 1 is a stator of a rotating electric machine. The stator 1 includes a plurality of connected coils 10 and a plurality of tubular connecting members. As shown in FIG. 1, the tip of the connected coil 10 is oriented in the direction of the rotation axis Ax of the stator 1. The connected coil 10 may have upper and lower surfaces of any shape such as U-shaped or mountain-shaped.

[0013] FIG. 2 is an exploded view showing a part of the stator 1. As shown in FIG. 2, two adjacent connected coils 10 are connected by a tubular connecting member 20. Similar to the tip of the connected coil 10, the tubular connecting member 20 is oriented in the direction of the rotation axis Ax of the stator 1.

[0014] FIG. 3 is a perspective view showing one end of the connected coil 10 and the tubular connecting member 20. The plurality of connected coils 10 are conductive members formed of a conductive material such as metal. The plurality of connected coils 10 include a tip portion 11 that is inserted into the tubular connecting member 20. The tip portion 11 has at least two side surfaces, an upper surface, and a lower surface. The other end of the connected coil 10 has the same shape as the one end.

[0015] The tubular connecting member 20 is a conductive member that connects two adjacent connected coils 10. The tubular connecting member 20 is formed of a conductive material such as metal (for example, copper). Note that the outer surface of the tubular connecting member 20 is subjected to insulation treatment.

[0016] FIG. 4 is a top view showing one end of the connected coil 10 and the upper surface of the tubular connecting member 20. FIG. 5 is a side view showing one end of the connected coil 10 and one side surface of the tubular connecting member 20. The dashed lines shown in FIGS. 4 and 5 indicate the inner surface of the tubular connecting member 20.

[0017] As shown in FIG. 4, two side surfaces of the tip portion 11 of the connected coil 10 are respectively provided with first convex portions 110A and 110B. As shown in FIG. 5, the upper surface and the lower surface of the tip portion 11 of the connected coil 10 are respectively provided with second convex portions 120A and 120B. In the present embodiment, the second convex portions 120A and 120B are provided on the tip side of the connected coil 10 rather than the first convex portions 110A and 110B.

[0018] The tubular connecting member 20 has two opposing first inner surfaces 210A and 210B and two opposing second inner surfaces 220A and 220B.

[0019] As shown in FIG. 4, the tip portion 11 of the connected coil 10 and the tubular connecting member 20 are formed such that the distance Xc between the upper surfaces of the first convex portion 110A provided on one side surface of the tip portion 11 and the upper surface of the first convex portion 110B provided on the other side surface of the tip portion 11 is larger than the distance Xd between the corresponding two first inner surfaces 210A and 210B of the tubular connecting member 20.

[0020] Also, as shown in FIG. 5, the tip portion 11 of the connected coil 10 and the tubular connecting member 20 are formed such that the distance Yc between the upper surface of the second convex portion 120A provided on the upper surface of the tip portion 11 and the upper surface of the second convex portion 120B provided on the lower surface of the tip portion 11 is larger than the distance Yd between the corresponding two second inner surfaces 220A and 220B of the tubular connecting member 20.

[0021] FIG. 6 is a view showing the upper surface and the side surface of the connected coil 10 and the tubular connecting member 20 in a state where the connected coil 10 and the tubular connecting member 20 are connected. The dashed lines shown in FIG. 6 indicate the inner surface of the tubular connecting member 20 and the tip portion 11 of the connected coil 10 inside the tubular connecting member 20.

[0022] As shown in Figure 6, the tip portion 11 of the connecting coil 10 is inserted into the tubular connecting member 20 such that each of the first protrusions 110A and 110B of the tubular connecting member 20 is at least partially in contact with the first inner surfaces 210A and 210B of the corresponding tubular connecting member 20.

[0023] As described above, the stator 1 comprises a plurality of interconnected coils 10 and a tubular connecting member 20 that connects two adjacent interconnected coils 10. The plurality of interconnected coils 10 each have a tip portion 11 that is inserted into the tubular connecting member 20. The tip portion 11 has at least two sides, an upper surface and a lower surface. The two sides of the tip portion 11 are each provided with first protrusions 110A and 110B. The upper and lower surfaces of the tip portion 11 are each provided with second protrusions 120A and 120B. The tubular connecting member 20 has two opposing first inner surfaces 210A and 210B and two opposing second inner surfaces 220A and 220B. The distance Xc between the upper surface of the first protrusion 110A provided on one side of the tip portion 11 and the upper surface of the first protrusion 110B provided on the other side of the tip portion 11 is greater than the distance Xd between the two corresponding first inner surfaces 210A and 210B of the tubular connecting member 20. The distance Yc between the upper surface of the second protrusion 120A provided on the upper surface of the tip portion 11 and the upper surface of the second protrusion 120B provided on the lower surface of the tip portion 11 is greater than the distance Yd between the two corresponding second inner surfaces 220A and 220B of the tubular connecting member 20.

[0024] By adopting this configuration, as shown in Figure 6, when the tip portion 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 push out the first inner surfaces 210A and 210B of the tubular connecting member 20. In addition, the second protrusions 120A and 120B of the connecting coil 10 push out the second inner surfaces 220A and 220B of the tubular connecting member 20. As a result, a mechanical fastening force is generated, which prevents the tip portion 11 of the connecting coil 10 from coming off the tubular connecting member 20.

[0025] Furthermore, the second protrusions 120A and 120B are provided closer to the tip of the connecting coil 10 than the first protrusions 110A and 110B. The tip portion 11 is inserted into the tubular connecting member 20 such that each of the first protrusions 110A and 110B makes at least partial contact with the first inner surfaces 210A and 210B of the corresponding tubular connecting member 20.

[0026] By adopting this configuration, as shown in Figure 6, when the tip portion 11 of the connecting coil 10 is press-fitted into the tubular connecting member 20, inclined portions 21A and 21B are formed on the tubular connecting member 20 located on the opposite side of the tip of the connecting coil 10 due to the force with which the tubular connecting member 20 tries to maintain its circumference. When a force is applied to detach the tip portion 11 of the connecting coil 10 from the tubular connecting member 20, the inner surfaces of these inclined portions 21A and 21B catch on the second protrusions 120A and 120B of the connecting coil 10, thereby preventing the tip portion 11 of the connecting coil 10 from detaching from the tubular connecting member 20.

[0027] Furthermore, the tip portion 11 of the connecting coil 10 and the tubular connecting member 20 are oriented in the direction of the rotation axis Ax of the stator 1. This allows the tip portion 11 of the connecting coil 10 to be press-fitted into the tubular connecting member 20 by applying an external force in the direction of the rotation axis Ax of the stator 1.

[0028] This disclosure is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. For example, in other embodiments, the first protrusions 110A and 110B of the tip portion 11 of the connecting coil 10 may be provided on the tip side of the connecting coil 10 than the second protrusions 120A and 120B. In this case, the tip 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 surfaces 220A and 220B of the corresponding tubular connecting member 20. [Explanation of symbols]

[0029] 1: Status 10: Linked coil 11:Tip 110A: First protrusion 110B: First convex part 120A: Second convex part 120B: Second convex part 20: Tubular connecting member 21A: Inclined part 21B: Inclined part 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 Yd: Distance

Claims

1. Multiple linked coils, It comprises a tubular connecting member that connects two adjacent connecting coils, The plurality of connected coils each have a tip portion that is inserted into the tubular connecting member, The aforementioned tip portion has at least two sides, an upper surface and a lower surface, The two sides of the aforementioned tip are each provided with a first protrusion, The upper and lower surfaces of the aforementioned tip are each provided with a second protrusion. The tubular connecting member has two opposing first inner surfaces and two opposing second inner surfaces. The distance Xc between the upper surface of the first protrusion provided on one side of the tip and the upper surface of the first protrusion provided on the other side of the tip is greater than the distance Xd between the corresponding two first inner surfaces of the tubular connecting member. The distance Yc between the upper surface of the second protrusion provided on the upper surface of the tip and the upper surface of the second protrusion provided on the lower surface of the tip is greater than the distance Yd between the corresponding two second inner surfaces of the tubular connecting member. stata.

2. The second protrusion is provided on the tip side of the connecting coil than the first protrusion. The stator according to claim 1, wherein the tip of each of the first protrusions is inserted into the tubular connecting member such that each of the protrusions at least partially contacts the first inner surface of the corresponding tubular connecting member.

3. The first protrusion is provided on the tip side of the connecting coil than the second protrusion. The stator according to claim 1, wherein the tip of each of the second protrusions is inserted into the tubular connecting member such that each of the protrusions at least partially contacts the corresponding second inner surface of the tubular connecting member.

4. The stator according to any one of claims 1 to 3, wherein the tip portion of the connecting coil and the tubular connecting member are oriented in the direction of the rotation axis Ax of the stator.

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