WELD STRUCTURE AND PUMP DEVICE

Japanese Patent JP3967529

B2

PROBLEM TO BE SOLVED: To provide a weld structure for preventing the discharge of weld burr generated at the time of welding to the inside and outside of a case body, not exerting adverse effects on the rotary operation of an impeller and the appearance of the case body and generating no deviation even in dimensional accuracy, and a pump device.
SOLUTION: In the weld structure for integrating a plurality of case members 1, 2 to form the case body 10 having an internal space, a fitting groove 13 is formed to the opposed region of the first case member 1 with the second case member 2 and the projected part 23 fitted in the fitting groove is formed to the opposed region of the second case member 2 with the first case member 1 and, when the projected part 23 is fitted in the fitting groove 13, a predetermined gap S is formed in the inside and outside direction of the case members and a positioning part 26 coming into contact with the inner or outer peripheral sides of the first case member 1 to position the first case member 1 in the inside and outside direction of the case members with respect to the second case member 2 is provided to the second case member 2.

WO/2021/177507	BLOWER
WO/2018/214184	COOLING OIL-FREE ANTI-BLOCKING LIGHT SEWAGE PUMP

Yasuhiro Nakasone

JP2000207168A

August 29, 2007

July 07, 2000

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Nidec Sankyo Co., Ltd.

F04D29/40; F04D29/60; B29C65/00; B29C65/02; F04D9/02; F16B5/07; F16B5/08; B29C65/08; (IPC1-7): B29C65/02; F04D29/60; F16B5/07; F16B5/08; //B29L22:00

JP62221526A
JP58212913A
JP57108922U
JP2001248592A

Iat International Patent Business Corporation
Shuji Watanabe

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