JP-7857189-B2 - Connection terminals

Inventors

• 光山 明宏
• 鈴木 健太郎
• 天谷 祐次

Assignees

• ジヤトコ株式会社
• 株式会社TOP

Dates

Publication Date

20260512

Application Date

20220829

Claims (2)

1. The base and, The filler material filled in the base, A bus bar is arranged to penetrate the base and the filler, A covering tube that covers the busbar, It has, The covering tube is positioned to be embedded in the filler, A connection terminal , A wire is electrically connected to the end of the busbar on the filler side. The aforementioned electric wire is covered with a protective tube. The protective tube is covered by the covering tube. Connection terminal.
2. A connection terminal according to claim 1, The system further comprises adjacent busbars arranged adjacent to the aforementioned busbar, The covering tube has insulating properties. Connection terminal.

Description

This invention relates to a connection terminal. Patent Document 1 discloses a structure in which a busbar is covered with a tube. Japanese Patent Publication No. 2021-12768 Figure 1 is a schematic diagram of a harness equipped with connection terminals according to an embodiment of the present invention.Figure 2 is a schematic cross-sectional view of the connection terminal. The following describes a harness 100 equipped with connection terminals 110 and 120 according to an embodiment of the present invention, with reference to the attached drawings. Figure 1 is a schematic diagram of the harness 100. As shown in Figure 1, the harness 100 in this embodiment electrically connects the rotating electric machine 200 and the inverter 300. The harness 100 comprises connection terminals 110 and 120, and electric wires 131, 132, and 133. In this embodiment, the rotating electric machine 200 operates on three-phase AC power. Therefore, the harness 100 comprises three electric wires 131, 132, and 133. The electric wires 131, 132, and 133 are electrically connected to connection terminals 110 and 120, respectively. The connection terminal 110 is fixed to the rotating electric machine 200 by fastening the fastening portions 10a and 10b provided on the base portion 10 to the stator housing 210 of the rotating electric machine 200 with bolts 50. The connection terminal 120 is fixed to the inverter 300 by fastening the fastening portions 20a and 20b provided on the base portion 20 to the case 310 of the inverter 300 with bolts 50. Next, the configuration of the connection terminal 110 will be explained with reference to Figure 2. Since the configuration of connection terminal 110 and connection terminal 120 are the same, a detailed explanation of connection terminal 120 will be omitted. Figure 2 is a schematic cross-sectional view of the connection terminal 110. As shown in Figure 2, the connection terminal 110 includes a base portion 10, a filler material 11 filled in the base portion 10, busbars 12, 13, and 14 that penetrate the base portion 10 and the filler material 11, a covering tube 15 covering the busbar 12, a covering tube 16 covering the busbar 13, and a covering tube 17 covering the busbar 14. The base portion 10 has fastening portions 10a and 10b, an outer peripheral groove 10c provided on its outer peripheral surface, and a recess 10d provided on the side of the base portion 10 that is exposed to the outside of the rotating electric machine 200 when the base portion 10 is fixed to the stator housing 210. The base portion 10 is formed of an insulating resin. The base portion 10 can be integrally molded with the busbars 12, 13, and 14, for example, by insert molding. An O-ring 60 is attached to the outer groove 10c to seal the space between the base 10 and the stator housing 210. The recess 10d is formed to surround the base portions of the busbars 12, 13, and 14. Therefore, when the filler material 11 is filled into the recess 10d, the base portions of the busbars 12, 13, and 14 are protected by the filler material 11. The filler material 11 is formed, for example, by filling the recess 10d with a thermosetting resin such as epoxy resin using a potting method. When the filler material 11 is filled into the base 10, a configuration is achieved in which the busbars 12, 13, and 14 penetrate both the base 10 and the filler material 11. Busbars 12, 13, and 14 are made of conductive material such as copper or aluminum and are electrically connected to the stator coil (not shown) of the rotating electric machine 200. The covering tube 15 is an insulating tube that covers the portion of the busbar 12 that is exposed to the outside of the rotating electric machine 200. The covering tube 16 is an insulating tube that covers the portion of the busbar 13 that is exposed to the outside of the rotating electric machine 200. The covering tube 17 is an insulating tube that covers the portion of the busbar 14 that is exposed to the outside of the rotating electric machine 200. The covering tubes 15, 16, and 17 may be, for example, heat-shrinkable tubing. Furthermore, the covering tubes 15, 16, and 17 are positioned so that their respective ends on the base 10 side are embedded in the filler material 11. In other words, the filler material 11 is filled into the base 10 after the covering tubes 15, 16, and 17 have been positioned in their predetermined locations relative to the base 10. For example, it is conceivable to protect the busbars 12, 13, and 14 up to their bases by pressing the covering tubes 15, 16, and 17 against the surface of the base 10 without providing the filler material 11. However, in this case, gaps inevitably form between the base 10 and the covering tubes 15, 16, and 17, or the covering tubes 15, 16, and 17 deform due to aging, exposing the bases of the busbars 12, 13, and 14, thus reducing the protective effect on the busbars 12, 13, and 14. Alternatively, for example, a filler material 11 could be provi