Title:
シャッター巻取装置及びシャッター装置
Document Type and Number:
Japanese Patent JP6710866
Kind Code:
B2
Abstract:
To provide a long-life shutter winding and unwinding device that further prolongs durable years of a shaft serving as a central axis for winding and unwinding a shutter.SOLUTION: A shutter winding and unwinding device 1 comprises: two pulleys fitted to a shaft, disposed separately from each other and provided rotatably with respect to the shaft; a link bar 5 having an inner cylinder 5a and an outer cylinder 5b, bridged between the two pulleys and formed so as to extend and contract in a longitudinal direction; a grease cap fitted to an end part 5c of both ends of the link bar; and a pump structure 7 for pushing out air. The pump structure includes: a disk-like member 5ba fixed inside the outer cylinder 5b for cutting off an interior of the outer cylinder in the longitudinal direction, and having a through-hole 5baa at a central axis of the link bar; a piston 5ad for sliding the interior of the outer cylinder in the longitudinal direction; and a connection member 5ac for connecting the piston with an end part of the inner cylinder. Grease is pushed out from the grease cap by extension and contraction of the link bar, and grease d is dripped on a shaft 3.SELECTED DRAWING: Figure 1
Inventors:
Kunio Yamamoto
Application Number:
JP2017185490A
Publication Date:
June 17, 2020
Filing Date:
September 26, 2017
Export Citation:
Assignee:
Yamamoto Co., Ltd.
International Classes:
E06B9/56
Domestic Patent References:
| JP2014132138A | ||||
| JP2007182725A | ||||
| JP622497U |
Attorney, Agent or Firm:
Takayuki Imanaka