Title:
HEIGHT ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/131398
Kind Code:
A1
Abstract:
The present invention provides a height adjustment device comprising: a head including a handle, a push button having a return spring, and a push rod extending to a lower part of the push button so as to move up and down and having an elongated hole; a main pole bar including an outer pipe connected to the lower part of the head, an inner pipe provided inside the outer pipe and moving up and down by the push rod, and a support of which an upper end portion is inserted into the push rod and fixedly coupled to the elongated hole by a fixing pin and of which a lower end portion supports a compression spring; an extensible pole bar inserted into or withdrawn from the main pole bar, and having a plurality of stopping grooves formed on the outer peripheral surface thereof and the compression spring embedded therein in a state of being supported by the lower end portion of the support; and a pole bar cap comprising a fixing cap having a locking hole, a lower cap provided so as to encompass and support the outer periphery of the extensible pole bar, an adjusting cap provided to the outer periphery of the fixing cap and coupled to the inner pipe by a fixing bolt horizontally passing through the elongated hole, and a stopper mounted in the locking hole and of which side surfaces are pressed and caught by the stopping groove such that the extensible pole bar is fixed, wherein when the push button is pressed, the inner pipe and the adjusting cap, which are coupled by the fixing bolt, are guided in the elongated hole and move downward together, and the stopper is separated from the stopping groove such that a fixing force for the extensible pole bar is released, thereby enabling height adjustment.
Inventors:
LEE MYEONG A (KR)
Application Number:
PCT/KR2017/000753
Publication Date:
August 03, 2017
Filing Date:
January 23, 2017
Export Citation:
Assignee:
LEE MYEONG A (KR)
International Classes:
A45B1/00; A45B9/00; A45B9/02
Foreign References:
| KR101366722B1 | 2014-02-25 | |||
| KR20160000076U | 2016-01-07 | |||
| JP2001211915A | 2001-08-07 | |||
| KR100849633B1 | 2008-08-01 | |||
| KR20110006520U | 2011-06-29 |
Attorney, Agent or Firm:
INTERBRAIN PATENT & LAW FIRM (KR)
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