Engagement and positioning device and pressure oven

Abstract

A locking and positioning device includes a door frame and a door stop structure. The door frame surrounds an opening and includes an inner wall located at the edge of the opening, at least one stop portion axially spaced from the inner wall, at least one entrance / exit formed next to the at least one stop portion, and a groove axially located between the inner wall and the at least one stop portion, wherein the at least one entrance / exit communicates with the groove. The door stop structure includes an extension pivotally connected to the door frame along a first axis and a door body pivotally connected to the extension along a second axis, wherein the door body is used to cover or expose the opening, the extension includes a first positioning portion and a second positioning portion, and the door body includes at least one stop, a third positioning portion corresponding to the first positioning portion, and a fourth positioning portion corresponding to the second positioning portion.

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