| 摘要 |
A height adjustment mechanism of a table saw is provided with a support including a concave seat, two first sleeves spaced from both ends of the seat respectively, a guiding hole, and two parallel brackets spaced from the guiding hole; a drive rod rotatably extended through the brackets; a first bevel gear mounted to an open end of the drive rod; first and second guide uprights fastened in the first sleeves respectively; a threaded guide rod inserted through the guiding hole; a second bevel gear at a bottom end of the guide rod to mesh with the first bevel gear; a motor including a threaded guide hole secured to the guide rod, two second sleeves with the first and second guide uprights sliding through respectively; and two support elements each including a concave base member, a sliding rail on the base member, and a fastening member. |
| 主权项 |
1. A height adjustment mechanism of a table saw (1) including a stand (2), an upper cutting surface (10) mounted on the stand (2), a circular saw blade (11) extending upward from the upper cutting surface (10), and a wheeled base (3) mounted under the stand (2), comprising:
a support (15) including a concave seat (156) under the saw blade (11), two first sleeves (151) spaced from both ends of the seat (156) respectively, a guiding hole (152) offset with respect to the seat (156) and aligned with one of the first sleeves (151), and two parallel brackets (153) spaced from the guiding hole (152); a drive rod (121) rotatably extended through the brackets (153); a first bevel gear (122) mounted to an open end of the drive rod (121); first and second guide uprights (16A, 16B) each having a lower portion fastened in one of the first sleeves (151); an externally threaded guide rod (19) having a lower portion inserted through the guiding hole (152); a second bevel gear (192) disposed at a bottom end of the guide rod (19) to mesh with the first bevel gear (122); a motor (14) including an internally threaded guide hole (141) threadedly secured to the guide rod (19), two second sleeves (142) with the first and second guide uprights (16A, 16B) slidably disposed through respectively; and two support elements (17) each including a concave base member (171) at one end, a curved sliding rail (172) slidably disposed on the base member (171) and secured to a bottom of the upper cutting surface (10), and a fastening member (173) fastened on a top of each of the first guide upright (16A) and the second guide upright (16B); wherein rotation of the drive rod (121) rotates the guide rod (19) to move both the motor (14) and the saw blade (11) upward or downward by sliding the second sleeves (142) on the first and second guide uprights (16A, 16B) respectively. |
