Title:
TELESCOPIC TUBE DEVICE AND VACUUM CLEANER HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2019/029603
Kind Code:
A1
Abstract:
The present invention relates to a telescopic tube device, comprising a first tube, a second tube that is slidably connected relative to the first tube, and an operating unit; the first tube is sleeved within the second tube; the operating unit is arranged at a sleeving position between the first tube and the second tube; the operating unit comprises a first locking member, a second locking member and a limiting member; when the telescopic tube device is in a locking state, the limiting member is at an initial position, and the first locking member and the second locking member remain engaged; when the telescopic tube device is in at least one releasing state, the limiting member is offset from the initial position, and the first locking member and the second locking member are disengaged; the operating unit further comprises at least one elastic member; when the limiting member is in the initial position, the elastic member provides the limiting member with a pulling force so that the limiting member has a tendency to remain in the initial position.
Inventors:
WEI JUAN (CN)
GU LIANG (CN)
GU LIANG (CN)
Application Number:
PCT/CN2018/099546
Publication Date:
February 14, 2019
Filing Date:
August 09, 2018
Export Citation:
Assignee:
SKYBEST ELECTRIC APPLIANCE SUZHOU CO LTD (CN)
International Classes:
A47L9/24
Foreign References:
| US6513191B1 | 2003-02-04 | |||
| EP0552481A1 | 1993-07-28 | |||
| CN2449639Y | 2001-09-26 | |||
| CN103263236A | 2013-08-28 | |||
| CN201870570U | 2011-06-22 |
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