Fixing device for junction wires of stator of motor

• US 10,312,764 B2
• Filed: 03/06/2017
• Issued: 06/04/2019
• Est. Priority Date: 01/06/2017
• Status: Active Grant

• Current Assignee: Chicony Power Technology Co. Ltd. (Chicony Electronics Company Limited)
• Original Assignee: Chicony Power Technology Co. Ltd. (Chicony Electronics Company Limited)
• Inventors: Yuan, Shao-Chung, Tsai, Hui-Hsin, Luo, Yin-Jao, Hung, Shih-Wei
• Primary Examiner(s): Mok, Alex W
• Application Number:
  US15/451,373
• Publication Number:
  US 20180198344A1
• Time in Patent Office: 820 Days
• Field of Search: 310 71
• CPC Class Codes: H02K 2203/09 Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32
• CPC Class Codes: H02K 3/38 around winding heads, equalising connectors, or connections thereto
• CPC Class Codes: H02K 3/522 for generally annular cores with salient poles

Abstract

A fixing device for junction wires of a stator of a motor includes a box and flat conductors. The box has circular grooves radially arranged at a side of the box and terminal accommodating grooves located at a peripheral edge at the side of the box. Each of the flat conductors has an arc-shaped holding portion and two terminals connected to an upper edge of the arc-shaped holding portion and horizontally bended. The arc-shaped holding portions are accommodated in the circular grooves. The terminals are exposed out of the circular grooves and partially accommodated in the terminal accommodating grooves, respectively. At least one of the terminals has an extending section extending over at least one of the circular grooves. A distance between the extending section and the arc-shaped holding portion of the flat conductor in the at least one circular groove is a fixed value.

Claims

1. A fixing device for junction wires of a stator of a motor, the fixing device comprising:

a box having a plurality of circular grooves radially arranged at a side of the box, the box further having a plurality of terminal accommodating grooves located at a peripheral edge at the side of the box; and

a plurality of flat conductors, each of the flat conductors comprising an arc-shaped holding portion and two terminals connected to an upper edge of the arc-shaped holding portion and horizontally bended, wherein the arc-shaped holding portions are accommodated in the circular grooves, the terminals are exposed out of the circular grooves and partially accommodated in two of the terminal accommodating grooves, respectively, a number of the arc-shaped holding portions accommodated in one of the circular grooves is plural, and the arc-shaped holding portions accommodated in said one of the circular grooves have different lengths in a circumferential direction,

wherein at least one of the terminals has an extending section extending over at least one of the circular grooves, and a distance between the extending section and the arc-shaped holding portion of the flat conductor in the at least one circular groove is a fixed value.

2. The fixing device of claim 1, wherein the at least one terminal further comprises:

an elevating section connected between the upper edge of the arc-shaped holding portion and the extending section and exposed out of the circular grooves; and

a wire-junction section connected to an end of the extending section opposite to the elevating section.

3. The fixing device of claim 2, wherein the wire-junction section is extended out of the peripheral edge at the side of the box and configured to be fixed with a stator wire-junction terminal.

4. The fixing device of claim 1, wherein the flat conductors comprise:

a first flat conductor comprising a first arc-shaped holding portion, a first terminal, and a second terminal, and the first and second terminals are connected to an upper edge of the first arc-shaped holding portion and horizontally bended; and

a second flat conductor comprising a second arc-shaped holding portion, a third terminal, and a fourth terminal, and the third and fourth terminals are connected to an upper edge of the second arc-shaped holding portion and horizontally bended,

wherein the first terminal is located between the third and fourth terminals.

5. The fixing device of claim 4, wherein the first terminal is not in contact with the third and fourth terminals.

6. The fixing device of claim 4, wherein each of the first and second terminals of the first flat conductor comprises a first extending section extending over at least one of the circular grooves, each of the third and fourth terminals of the second flat conductor comprises a second extending section extending over at least one of the circular grooves, and the first and second extending sections have different lengths.

7. The fixing device of claim 6, wherein the circular grooves comprise a first circular groove and a second circular groove respectively accommodating the first and second arc-shaped holding portions, the terminal accommodating grooves comprise two first terminal accommodating grooves and two second terminal accommodating grooves, the first terminal accommodating grooves respectively partially accommodate the first and second terminals, the second terminal accommodating grooves respectively partially accommodate the third and fourth terminals, a length of the first extending section is equal to a distance from the first circular groove to any of the first terminal accommodating grooves, and a length of the second extending section is equal to a distance from the second circular groove to any of the second terminal accommodating grooves.

8. The fixing device of claim 1, wherein the box further has a plurality of latches, each of the latches is partially extended to an entrance of a corresponding one of the circular grooves, and each of the arc-shaped holding portions is engaged between a bottom of a corresponding one of the circular grooves and a corresponding one of the latches.

9. The fixing device of claim 1, further comprising a cover detachably covered at the side of the box, the cover having a plurality of outlet holes, wherein the flat conductors constitute a plurality of windings respectively corresponding to the outlet holes, and each of the outlet holes is aligned with at least a portion of a corresponding one of the windings.

10. The fixing device of claim 1, wherein the flat conductors constitute a plurality of windings, and in each of the windings, a sum of lengths of the arc-shaped holding portions of the flat conductors in the circumferential direction and lengths of the terminals in radial directions is substantially close a fixed value.