A Tarpaulin Shelter with Collapsible Doorframes

Abstract

The present invention relates to a tarpaulin shelter with collapsible doorframes, it includes doorframes, the lower end of which is connected to the base and the upper end is connected with corner joint and cross beam, characterized in that the doorframe includes at least three upright poles, in which at least a set of x-scissor member are arranged between the middle upright pole and each side upright pole, said scissor is composed of two cross rods of which the middle portions are mutually hinged together. One end of each cross rod is hinged with the fixing collar of the corresponding upright pole; the other end is hinged with the movable collar corresponding to upright pole. Due to the fact that each cross rod can rotate around its middle portion and the corresponding movable collar and fixed collar, thereby when the upright pole is pulled through the rotation of the cross rod and the shifting movement of the movable collar on the upright pole, the distance between upright poles can be changed, thereby when package is made, the volume is smaller, and it is convenient in transportation and storage. When the use is needed, stretching and collapsing is convenient and rapid. To this end, the plug-in locating mode is used to achieve the purpose of rapid assembling. The present invention features simple structure, good practicality, therefore its use is worth to be widespread in the structure of tarpaulin shelters.

Description

CROSS REFERENCE TO RELATED PATENT APPLICATIONS [0001] This patent application claims the priority benefit of a Chinese patent application No. 200520101871.9, filed on Apr. 28, 2005. FIELD OF THE INVENTION [0002] The present invention relates an awning or a tarpaulin shelter, which can be stretched out outdoors for temporary use, particularly to a tarpaulin shelter can be set up rapidly with prefabricated parts. BACKGROUND OF THE INVENTION [0003] At present, there are a variety of tarpaulin shelters at home and abroad markets, they have good looking, and they are used widely in many occasions. From its top to bottom it usually includes a top connection, inclined extension rods, corner joints, lateral beams, doorframes and bases, in which the top connection, inclined extension rods, corner joints and lateral beams are connected mutually in a plug-in manner to form framework of the top tarpaulin, and the connection between doorframes and bases forms surrounding framework for supporting...

AI Technical Summary

Benefits of technology

[0006] A ground fastener (3) is formed by two perpendicular crossed bars, each of the bar is further formed by a first base member (31) and a second base member (32) mutually connecting in a longitudinal plug-in manner, the ground fastener (3) has three upright arranged positioning feet (322) for positioning corresponding three upright poles i.e. one middle pole (21) and two side upright pole (22) to form one corner wall member, while the seconds base member (32) comprises an horizontal inserted pipe (321) and an upright locating foot (322), the inserted pipe (321) accommodates the horizontal pipe bar (310) of the first base member (31) in a plug-in connection manner, the locating foot (322) is located on the distal end of upper surface of the inserted pipe (321) and accommodated by the lower end port of the upright pole (21),(22) permitting them forming a plug-in connection and correct positioning.

[0013] As an improvement of the present invention, a lock projector (311) and a corresponding positioning hole (323) make sure that the first base member (31) and the second base member (32) are at the correct plug-in position when they are longitudinally connected with each other. The lock projector (311) is supported by a spring (not shown) to make it to resiliently protrude outward, so that the connection is rapid and firm by one-touch manner for keeping it to correct positioning.

[0016] As compared with the prior art, the advantages of the present invention lie in that, due to the fact that when the shelter being collapsed, push the side pole (22) toward the middle pole (21), along with the pushing the movable collars (24)(24a) and the fixed collars (25)(25a) mutually becoming apart from far and far while the middle upright pole (21) and the side upright pole (22) become closer and closer.

[0017] Therefore the volume of upright corner-wall becomes a space-saving pole-bundle. When the shelter is collapsed, and a package is made, the volume of pole-bundle is space saving, which results in convenience for transportation and storage. Its stretching and collapsing are very rapid and convenient.

Problems solved by technology

Hence, such designs have some drawbacks, e.g. large package volume and inconvenience in transportation, storage; and the stretching and collapsing are also a rather labor and time consuming.

Therefore the existing tarpaulin shelter does not perfectly meet the demand on convenience in use, transportation and storage, so its further improvement is expected.

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