This application claims priority of Chinese Patent Application No. 201020239188.2 filed on Jun. 28, 2010.
1. Field of the Invention
The invention relates to a foldable paper box, and more particularly to a foldable paper box that includes a foldable inner panel secured to a foldable outer panel.
2. Description of the Related Art
Conventional foldable paper boxes are made from foldable flat paperboard blanks that save space and can be transported conveniently when they are delivered from factories. The flat paperboard blanks can be formed into three dimensional box structures when folded. An example of such conventional folded boxes is disclosed in U.S. Pat. No. 7,481,355. However, when the paperboard blank disclosed in the US patent is folded into a three dimensional box structure, holding means such as adhesive, magnet, or Velcro fasteners must be used in order to hold the paperboard blank in a folded three dimensional configuration.
An object of the present invention is to provide a paper box that can be unfolded to a flat configuration and that can be placed in a three dimensional folded configuration without using external fasteners.
According to the present invention, a foldable paper box comprises an outer panel and an inner panel. The outer panel includes a longitudinal outer panel that has parallel first and second fold lines extending transversely of a longitudinal direction of the outer panel and dividing the outer panel into an outer base wall, a cover wall, and a first outer sidewall between the outer base wall and the cover wall. The outer panel is foldable along the first and second fold lines to place the cover wall above the outer base wall.
The inner panel has an inner base wall secured to the outer base wall, two opposite parallel first inner sidewalls connected foldably and respectively to two opposite first sides of the inner base wall, two opposite parallel second inner sidewalls connected foldably and respectively to two opposite second sides of the inner base wall, which are connected between the first sides of the inner base wall, the first and second inner sidewalls confining a receiving space on the inner base wall when folded to extend uprightly from the inner base wall. The receiving space is covered by the cover wall when the outer panel is folded over the inner base wall. The outer and inner base walls confine therebetween two insert slots respectively adjacent to the first inner sidewalls. The first inner sidewalls are foldable upwardly and outwardly from the inner base wall and insertable partially, removably and respectively into the insert slots. The second inner sidewalls are folded outwardly from the inner base wall, inserted partially between the inner and outer base walls, and secured non-removably to the outer base wall.
Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:
Referring to
The outer panel 1 is foldable along the first, second and third fold lines 31, 32, 33 to place the cover wall 12 above the base wall 11 and to place the outer panel 1 in a closed position as shown in
The inner panel 2 includes an inner base wall 21, a pair of first inner sidewalls 22 connected foldably and respectively to two opposite first sides of the inner base wall 21, and a pair of second inner sidewalls 23 connected foldably to two opposite second sides of the inner base wall 21, which interconnect the first sides of the inner base wall 21. The inner base wall 21 is rectangular and has an area smaller than that of the outer base wall 11 of the outer panel 1. The inner base wall 21 has an intermediate part 210 (
As best shown in
Each second inner sidewall 23 has a second sidewall inner part 231 connected foldably to and extending uprightly from the inner base wall 21, fourth, fifth, and sixth sidewall fold lines 51, 52, 53, a second sidewall top part 233 disposed between the fourth and fifth sidewall fold lines 51, 52 and connected foldably to the second sidewall, inner part 231 through the fourth sidewall fold line 51 above the inner base wall 21, a second sidewall outer part 234 that is disposed between the fifth and sixth sidewall fold lines 52, 53 in parallel to the second sidewall inner part 231 and that is connected foldably to the second sidewall top part 233 through the fifth sidewall fold line 52, a connection part 232 that is connected foldably to the sidewall outer part 234 through the sixth sidewall fold line 53 and that is inserted between the inner and outer panels 2, 1 and is secured to a top side of the outer base wall 11, and two tabs 236 connected foldably and respectively to and projecting from two opposite ends of the second sidewall outer part 234 in opposite directions along a line parallel to the fourth to sixth sidewall fold lines 51-53. The tabs 236 are folded from the respective second sidewall outer part 234 to extend between the first sidewall inner and outer parts 221, 224 of an adjacent one of the first inner sidewalls 22.
The inner panel 2 further has four corner parts 235 each of which is connected foldably to one of the first sidewall inner parts 221 and to one of the second sidewall inner parts 231 and has a diagonal fold line 2351. Each corner part 235 is folded along the diagonal fold line 2351 (
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While the present invention has been described in connection with what are considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Number | Date | Country | Kind |
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2010 2 0239188 U | Jun 2010 | CN | national |
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