A telescopic mechanism, comprising: a first component; and a second component capable of moving relative to the first component along a longitudinal direction; wherein one of the first component and the second component is arranged with a contacting portion, and the contacting portion resiliently abuts against the other one of the first component and the second component, such that a friction resistance is provided when the second component is moved relative to the first component; wherein the first component is arranged with a first limiting feature, the second component is arranged with a second limiting feature, and the first limiting feature and the second limiting feature are capable of abutting with each other; wherein one of the first limiting feature and the second limiting feature is a protrusion, and the other of the first limiting feature and the second limiting feature is a flexible arm; and wherein the one of the first component and the second component arranged with the contacting portion is formed with a first hole, and the contacting portion is disposed in the first hole; the one of the first component and the second component arranged with the flexible arm is formed with a second hole, and the flexible arm is disposed in the second hole; and the one of the first component and the second component arranged with the flexible arm comprises a U-shaped structure, a first connecting portion and a second connecting portion, the U-shaped structure is disposed between the first connecting portion and the second connecting potion, the U-shaped structure is bent relative to the first connecting portion and the second connecting potion so as to form a dodging space below the U-shaped structure, a height of the dodging space is greater than a height of the protrusion, and the flexible arm is disposed at the U-shaped structure. a first component; and a second component capable of moving relative to the first component along a longitudinal direction; wherein one of the first component and the second component is arranged with a contacting portion, and the contacting portion resiliently abuts against the other one of the first component and the second component, such that a friction resistance is provided when the second component is moved relative to the first component; wherein the first component is arranged with a first limiting feature, the second component is arranged with a second limiting feature, and the first limiting feature and the second limiting feature are capable of abutting with each other; wherein one of the first limiting feature and the second limiting feature is a protrusion, and the other of the first limiting feature and the second limiting feature is a flexible arm; and wherein the one of the first component and the second component arranged with the contacting portion is formed with a first hole, and the contacting portion is disposed in the first hole; the one of the first component and the second component arranged with the flexible arm is formed with a second hole, and the flexible arm is disposed in the second hole; and the one of the first component and the second component arranged with the flexible arm comprises a U-shaped structure, a first connecting portion and a second connecting portion, the U-shaped structure is disposed between the first connecting portion and the second connecting potion, the U-shaped structure is bent relative to the first connecting portion and the second connecting potion so as to form a dodging space below the U-shaped structure, a height of the dodging space is greater than a height of the protrusion, and the flexible arm is disposed at the U-shaped structure.