Gas burner with a function to adjust the focal angle

摘要

A gas burner with a function for adjusting the focal angle, comprising: a fixed housing (1) with a left housing part (11) and a right housing part (12), a gas storage cylinder (2) being arranged in the fixed housing (1); an upper end of one of the left housing part (11) and the right housing part (12) is formed transversely with an elongated hole (111) and at least one insertion hole (112); and a rotatable housing (5) which is pivotally attached to the fixed housing (1) and to a combustion device (6), one side of the rotatable housing (5) having a first shaft hole (511) with a plurality of annularly arranged tine slots (511 a) Receiving a locking mechanism (53) with an unlocking pushbutton (531), a connecting rod (531a) protrudes from an inner surface of the unlocking pushbutton (531) to protrude through the first shaft hole (511), an expandable spring (532) over this connecting rod (531a) and to protrude into the rod hole (111); the connecting rod (531a) is fastened to a passive element (533) in the fixed housing (1), the passive element has at least one convex tine (533a) which projects to the plurality of tine slots (511a), each of the at least one convex tine ( 533a) is inserted into and positioned in one of the tine slots (511a) to form a locked status; wherein when the unlocking push button (531) is pressed, the expandable spring (532) is compressed, the passive element (533) can be moved inwards with the connecting rod (531a), which pulls at least one convex tine (533a) out of the tine slots (511a) to release the locked status, the unlocking push button (531) serves as an axial core of the first shaft hole (511) in order to rotate the rotatable housing (5) with the combustion device (6) directly until a desired focal angle is reached.