Patent ID: 7785418

Claim:
An adjusting mechanism for adjusting a boat in a furnace to be parallel to the furnace, the furnace having a receiving space and an opening, the receiving space having a first symmetrical line, the boat having a second symmetrical line, a first gap area being formed between a sidewall of the receiving space and a sidewall of the boat when the boat is inserted into the receiving space through the opening, the adjusting mechanism comprising: an adjusting tool, which is removably disposed at the opening and has a wide part, a narrow part and a through hole formed from the wide part to the narrow part, wherein the narrow part inserts into the opening such that the wide part is exposed out of the opening, and a second gap area smaller than the first gap area is formed between a sidewall of the through hole at the narrow part and the sidewall of the boat when the boat is inserted into the receiving space through the through hole and the opening; and an adjusting element for adjusting the first symmetrical line and the second symmetrical line to be parallel to each other according to the second gap area; wherein, the sidewall of the boat has a first diameter, the sidewall of the through hole at the narrow part has a second diameter, the sidewall of the receiving space has a third diameter, the first diameter is smaller than the second diameter, and the second diameter is smaller than the third diameter.