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Title:
CASCADE PUMP APPARATUS
Document Type and Number:
WIPO Patent Application WO/2014/024694
Kind Code:
A1
Abstract:
Provided is a cascade pump apparatus that is capable of preventing a potting agent for sealing a drive coil from leaking from a wiring outlet, while facilitating the blocking of the wiring outlet. In the cascade pump apparatus (1), a blocking member (8), which blocks a wiring outlet (85) cut out of a frame section (56) of an upper case (12), is provided with a pair of notches (100) that engage with a pair of frame end sections (89) that face both edges in the width direction with the wiring outlet (85) therebetween. The periphery (91) of the front end (90) of each frame end section (89) in the mounting direction is provided with a beveled first edge (93) and an unbeveled second edge (94). The blocking member (8) allows each notch (100) to be inserted into each frame end section (89), with the first edge (93) serving as a guide surface. When the blocking member (8) is secured to the upper case (12), grooves (106) are formed between the first edges (93) and the blocking member (8). However, the grooves (106) are divided by the second edges (94); thus, a potting agent (59) that fills the inside of the frame section (56) passes through the grooves (106) without leaking.

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Inventors:
KOKUBO, Nobuki (5329 Shimosuwa-mach, Suwa-gun Nagano 11, 〒3938511, JP)
TANAKA, Shogo (5329 Shimosuwa-mach, Suwa-gun Nagano 11, 〒3938511, JP)
Application Number:
JP2013/070199
Publication Date:
February 13, 2014
Filing Date:
July 25, 2013
Export Citation:
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Assignee:
NIDEC SANKYO CORPORATION (5329, Shimosuwa-machi Suwa-gu, Nagano 11, 〒3938511, JP)
KOKUBO, Nobuki (5329 Shimosuwa-mach, Suwa-gun Nagano 11, 〒3938511, JP)
TANAKA, Shogo (5329 Shimosuwa-mach, Suwa-gun Nagano 11, 〒3938511, JP)
International Classes:
F04D5/00
Foreign References:
JPH0674061U
JP2009189157A
JP2006046212A
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