| 摘要 |
The present invention provides a device for adjusting the height of a seat, comprising a head (100), a main pole (200), a first extension pole (300) and a second extension pole (400). The present invention can adjust and fix a length by locking and unlocking with a locking key via the push or release of a pushing button (120). The present invention can adjust and fix a length by locking and unlocking with a locking key, prevents the pushing button from being pushed arbitrarily during keeping or use by installing a locking button, and can maintain the adjustment of length. And the present invention makes length adjustment smooth and soft by installing various springs such as a compression spring, a shock absorbing spring and a return spring. |
