To provide a filter capable of suppressing the coming-off of a filter element at use of the filter and suppressing the generation of a foreign matter such as a welding burr in a filtration chamber.
The filter 1 is provided with a first case member (upper case member 2) and a second case member (lower case member 3) abutted on each other to form the filtration chamber S, and the filter element 8 having a peripheral edge clamped between the respective abutment ends 2a, 3a of the first case member and the second case member. The first case member has a laser permeability and the second case member has a laser absorptivity. A hole part 9 is provided on a peripheral edge of the filter element and an element welding part W1 by a laser light L1 irradiating it in an abutment direction is formed between the abutment end of the second case member and the hole part of the filter element.
COPYRIGHT: (C)2007,JPO&INPIT
| JP2006231835A | ||||
| JP2006272188A | ||||
| JP2007030282A |
Yoshinobu Hagino
Naoya Taniguchi
Hayakawa Daitou