Sealing structure, vacuum pump motor including same sealing structure, and vacuum pump
AssigneeEbara Corporation
InventorsTakanori Inada, Naoya Yoshida, Takashi Hozumi, Yoshinori Ojima, Toshiharu Nakazawa
Life of this patent
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Abstract
A sealing structure for a vacuum pump motor which maintains the sealing properties of the vacuum pump motor in an ensured fashion, including a lead wire which is passed through an opening portion formed in a motor frame to be connected to a motor stator and a seal member which seals the opening portion. The lead wire includes a core wire portion and a covering portion which covers the core wire portion. The lead wire also includes a seal portion formed around at least part of the core wire portion inside the covering portion.
Claims7
A sealing structure for a vacuum pump motor, comprising:
- a lead wire which passes through an opening formed in a motor frame, wherein the lead wire is configured to be connected to a motor stator;
- and
- a seal member which seals the opening, wherein
- the lead wire comprises core wires and a covering which covers the core wires, wherein a seal is formed around at least part of the core wires inside the covering, and wherein
- the seal comprises a sealing treatment in which part of the covering is removed to partially integrate intermediate portions of the core wires into a single wire assembly through soldering, the intermediate portions being any portions other than ends of the core wires, and wherein the seal is covered by a heat-shrinkable tube via a sealing medium.
Dependencies are inferred from the claim text.