Title:
昇降扉構造、箱体及び局所排気装置
Document Type and Number:
Japanese Patent JP7080081
Kind Code:
B2
Abstract:
To provide a lifting door structure, a box body, and a local exhauster which can hold a weight steady.SOLUTION: The lifting door structure includes a lifting door 64 and a main weight. The lifting door 64 comprises a weight adjustment mechanism 74 which attempts balance with the main weight. The weight adjustment mechanism 74 comprises: a base part 121 which has a holding face directed backwardly; a sub weight 122 which has slits 126 penetrating in the back and forth direction, and is installed detachably to the base part 121 in a state opposed to the holding face; and engaging members 123 which are provided to the base part 121 and are engaged with the sub weight 122. The engaging member 123 comprises: a first positioning portion which is inserted in the slit 126 and is engaged with the sub weight 122 in the vertical direction and the right and left direction; and a second positioning portion 131c which is engaged with the sub weight 122 in the back and forth direction.SELECTED DRAWING: Figure 7
Inventors:
Ryusuke Yoshida
Tomoe Daisuke
Tomoe Daisuke
Application Number:
JP2018054424A
Publication Date:
June 03, 2022
Filing Date:
March 22, 2018
Export Citation:
Assignee:
Okamura Corporation
International Classes:
E05F1/04; B01L1/00; E06B3/44
Domestic Patent References:
| JP2007332717A | ||||
| JP2009291750A | ||||
| JP2005163439A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Mitsuyoshi Suzuki
Mitsuyoshi Suzuki