| 摘要 |
A foldable tent frame includes a parallelepiped structure comprised of a rectangular front sub-frame having four front poles rotatably connected at four front corner members and a rectangular rear sub-frame having four rear poles rotatably connected at four rear corner members and four length-adjustable horizontal poles which are respectively rotatably connect between the front and rear corner members. Each front pole has two sections pivotally connected to a front joint member and each rear pole has two sections detachably connected a rear joint member. Four reinforcing bars respectively rotatably connected to the rear corner members extend diagonally to pivotally joint to a common central joint which includes two halves rotatably relative to each other. A brace pole, comprised of two sections detachably jointed by a joint member, is oriented upright and pivoted at two opposite ends thereof to every two horizontal poles. Each length-adjustable horizontal pole includes a tubular member having two open ends fit into two extension bars rotatably mounted to the front and rear corner members. A retainer in the form of a leaf spring for biasing a projection into holes formed on the extension bar and the horizontal pole to retain the relative position of the latter with respect to the former is provided and is releasable by a release member which has a movable boss to push the projection against the leaf spring for breaking the engagement.
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