| 摘要 |
The present invention relates to a telescopic device comprising: a hollow outer member; an inner member inserted into the outer member to allow sliding; and a telescopic member which is provided at an inner member and in contact with an inner surface of the outer member to generate friction when stretched. Accordingly, the purpose of the present invention is to provide a telescopic device which has a simple structure so as to be manufactured and assembled easily, and which is easy to adjust stretching and shrinking force which are needed for a telescopic operation. |
