Abstract: A host unit case with foldable front and rear walls and lower cover for a computer includes a front wall, a rear wall, an upper cover and a lower cover. The lower end of the front wall connects with the front end of the lower cover. The lower end of rear wall pivotally connects with the rear end of the lower cover. Hence, the lower cover, the front wall and the rear wall are unfolded to allow the lower cover engaging with upper end of the front wall and upper end of the rear wall for the host unit case being set up as a complete form quickly and being folded parts thereof to reduce the volume thereof conveniently.

Abstract: A foldable host unit case for a computer with joint mechanisms includes four holding posts and the upper ends of the holding posts connect with a neighboring holding post with first foldable connecting rods and second foldable connecting rods respectively. The lower ends of the holding posts are joined to four ends of a cross connecting rod set such that the holding posts are capable of being extended to constitute a firm structure. Hence, the host unit case is capable of being extended conveniently and quickly and being folded conveniently to reduce the volume thereof during being packaged.

Abstract: A host unit case for a computer with foldable holding posts at front and rear walls thereof provides an upper cover and a lower cover to pivotally connect with a front wall, a rear wall, first holding posts, second holding posts, third holding posts and fourth holding posts respectively as a main structure. The main structure is extended to form a firm structure such that the host unit case is capable of being set up conveniently and quickly and is folded conveniently to reduce the volume thereof during being packaged.

Abstract: A host unit case with foldable lateral walls for a computer provides a lateral wall, which is composed of a first plate member and a second plate member and the plate members pivotally connect with each other. The first and second plate members are pivotally connected with a front wall and the first lateral edge of a rear wall. The lower end of the rear wall pivotally connects with the rear end of a lower cover. All parts are capable of being folded easily to reduce volume of the packaged host unit case. When the packaged host unit case is unfolded, the front and rear walls are joined to the upper and lower covers respectively such that the host unit case is set up completely conveniently and quickly.

Abstract: A host unit case with upper and lower covers for a computer includes an upper cover and a lower cover and each of the covers is composed of two plate members pivotally connecting with each other. A first wall and a second wall each have the upper and lower ends thereof pivotally connecting with one of the plate members available for all parts being folded easily to reduce volume of the packaged host unit case. When the packaged host unit case is unfolded, the upper and lower ends of the first wall are joined to the first ends of the upper and lower covers respectively and the upper and lower ends of the second wall are joined to the second ends of the upper and lower covers respectively such that the host unit case is set up completely conveniently and quickly.

Abstract: A dually foldable host unit case for a computer includes a first plate member, an upper cover member, a lower cover, a front wall and a rear wall. The first plate member pivotally connects with the upper cover, the lower cover, the front wall and the rear wall respectively. The preceding parts are capable of being folded to allow the host unit case being reduced volume thereof while packaging and capable of being extended to allow the second lateral sides of the front and rear walls and the second lateral sides of the upper and lower covers are pivotally connected for setting up the host unit case conveniently and quickly.

Abstract: A reversible door with dual pivots includes a frame, a reversible door and two swing arms; the swing arms are attached to the frame and the reversible door at two inner opposite lateral sides of the frame and the reversible door respectively with the two ends of each swing arm having a pivot member pivotally connecting with the pivot members of the frame and the reversible door respectively; the swing arms can be rotated with respect to the frame and the reversible door can be rotated with respect to swing arms; a rotational angle of the reversible door is greater than 180° can be obtained so that the inner lateral sides of the reversible door can be valuably utilized.