Expansion mechanism for a medal storage box

Abstract

The present invention provides an expansion mechanism for a medal storage box. The expansion mechanism can link directly to change between a storage posture and a display posture of the medal by providing a single action force. By an external action force, the expansion mechanism links to push up the medal in a display posture; whereas, by exerting another action force in an opposite direction, the position of medal can change and be collected in a flat posture. The expansion mechanism is an inner stretching mechanism, a pulling mechanism, or a pushing mechanism.

What is claimed is: 
     
         1 . An expansion mechanism for a medal storage box, being linked directly to change between a storage posture and a display posture of the medal by exerting a single action force, comprising a storage box, which is provided with a lower box unit, with an interior of the lower box unit being an operating space, an upper surface of the operating space being a flat surface, and a rear side of the lower box unit being connected to a cover body through a connection pivot;
 an expansion mechanism, which is assembled in the operating space, with a working plane of the expansion mechanism being parallel to a direction in which a cover body is opened and closed, the expansion mechanism being provided with an extension strut, an outer end of the extension strut being connected outward to a support structure, and the expansion mechanism being an inner stretching mechanism which further includes   a bottom fixing rod which is fixed on a side of the operating space, with two ends of the bottom fixing rod being connected to a left swing rod and a right swing rod through a left pivot and a right pivot respectively, a free end of the left swing rod and the right swing rod being connected to two ends of a floating lever through a left connection point and a right connection point respectively, forming a parallel mechanism;   a pulling rod, an end of which is coaxially connected to the left connection point, with the other end of the pulling rod being connected to an inner end of the extension strut through a variable connection point;   a longitudinal chute, which is parallel to and assembled with the extension strut;   a radial slide bar, which is fixed on a place of the floating lever and is slidingly disposed in the longitudinal chute in a radial direction; and   an elastic sliding snap, which is fixed on a place of the operating space, corresponding to a place after any element in the inner stretching mechanism is unfolded.   
     
     
         2 . The expansion mechanism for a medal storage box, according to  claim 1 , wherein a total length of pulling rod is smaller than that of the floating lever, and the radial slide bar is stopped at an outer end of the longitudinal chute when the expansion mechanism is unfolded. 
     
     
         3 . The expansion mechanism for a medal storage box, according to  claim 1 , wherein a section of the floating lever, at an end of the right connection point, is upward assembled with a note plate. 
     
     
         4 . The expansion mechanism for a medal storage box, according to  claim 1 , wherein a flexible element is provided, with an end of the flexible element being assembled at the left connection point, and the other end of the flexible element being assembled at a contact point provided by the cover body. 
     
     
         5 . An expansion mechanism for a medal storage box, being linked directly to change between a storage posture and a display posture of the medal by exerting a single action force, comprising a storage box, which is provided with a lower box unit, with an interior of the lower box unit being an operating space, an upper surface of the operating space being a flat surface, and a rear side of the lower box unit being connected to a cover body through a connection pivot;
 an expansion mechanism, which is assembled in the operating space, with a working plane of the expansion mechanism being parallel to a direction in which a cover body is opened and closed, the expansion mechanism being provided with an extension strut,   an outer end of the extension strut being connected outward with a support structure, and the expansion mechanism being a pulling mechanism which further includes   a bottom fixing rod which is fixed on a side of the operating space, with two ends of the bottom fixing rod being connected to a left swing rod and a right swing rod through a left pivot and a right pivot respectively, a free end of the left swing rod and the right swing rod being connected to two ends of a floating lever through a left connection point and a right connection point respectively, forming a parallel mechanism;   a pushing rod, an end of which is coaxially connected at the right connection point, with the other end of the pushing rod being connected to an inner end of the extension strut through a variable connection point;   a longitudinal chute, which is parallel to and assembled with the extension strut; and   a radial slide bar, which is coaxially assembled at the left connection point and is slidingly disposed in the longitudinal chute in a radial direction.   
     
     
         6 . The expansion mechanism for a medal storage box, according to  claim 5 , wherein a total length of pushing rod is smaller than that of the floating lever, and the radial sliding bar is stopped at an outer end of longitudinal chute when the expansion mechanism is unfolded. 
     
     
         7 . The expansion mechanism for a medal storage box, according to  claim 5 , wherein an upper part of the floating lever is assembled with a note plate. 
     
     
         8 . The expansion mechanism for a medal storage box, according to  claim 5 , wherein a flexible element is provided, with an end of the flexible element being assembled at the left connection point, and the other end of the flexible element being assembled at a contact point provided by the cover body. 
     
     
         9 . An expansion mechanism for a medal storage box, being linked directly to change between a storage posture and a display posture of the medal by exerting a single action force, comprising
 a storage box, which is provided with a lower box unit, with an interior of the lower box unit being an operating space, an upper surface of the operating space being a flat surface, and a rear side of the lower box unit being connected to a cover body through a connection pivot;   an expansion mechanism, which is assembled in the operating space, with a working plane of the expansion mechanism being parallel to a direction in which a cover body is opened and closed, the expansion mechanism being provided with an extension strut, an outer end of the extension strut being connected outward with a support structure, and the expansion mechanism being a pushing mechanism which further includes   a bottom fixing rod which is fixed on a side of the operating space, with two ends of the bottom fixing rod being connected to a left swing rod and a right swing rod through a left pivot and a right pivot respectively, a free end of the left swing rod and the right swing rod being connected to two ends of a floating lever through a left connection point and a right connection point respectively, forming a parallel mechanism;   a pushing rod, an end of which is coaxially connected at the right connection point, with the other end of the pushing rod being connected to an inner end of the extension strut through a variable connection point;   an extension arm, with an end of which being fixed and assembled with the left swing arm through an assembly portion, and the other end of the extension arm being connected to a pushing pivot;   a swing arm, with an end of which being fixed relatively on an inner side of the cover body, and the other end of the swing arm being provided with a back pushing pivot, wherein a repelling pivot is disposed on the swing arm, at a place away from the back pushing pivot toward the cover body;   a pushing link rod, with an end of which being connected to the pushing pivot, and the other end of the pushing link rod being connected to the repelling pivot; and   a back pushing rod, with an end of which being connected to the back pushing pivot, and the other end of the back pushing rod being connected to a connection point provided by the support structure.   
     
     
         10 . The expansion mechanism for a medal storage box, according to  claim 9 , wherein a note plate is assembled above the floating lever, next to the right connection point. 
     
     
         11 . The expansion mechanism for a medal storage box, according to  claim 9 , wherein a total length of pushing rod is smaller than that of the floating lever. 
     
     
         12 . The expansion mechanism for a medal storage box, according to  claim 9 , wherein the bottom fixing rod is fixed in the operating space, with the level being higher than the level space in which the pushing pivot swings linearly.