Ranging type packing case convenient to transport in stairs

Abstract

The invention discloses a ranging type packing case convenient to transport in stairs. A first circular ring made of steel and iron is fixedly arranged outside a shell body of the packing case. The first circular ring is externally tangent to the shell body of the packing case. A second circular ring is arranged on the periphery of the first circular ring. The circle center of the second circular ring coincides with the circle center of the first circular ring. N steel balls are arranged between the first circular ring and the second circular ring. The steel balls are externally tangent to the first circular ring and internally tangent to the second circular ring. An infrared sensor exposing out of the front ends of the first circular ring and the second circular ring is arranged on the outer portion of the shell body of the packing case. The infrared sensor is used for measuring the distance between the packing case and a wall in the front and transmitting measured signals to a single chip microcomputer through an analog / digital (A / D) conversion circuit. When the packing case approaches the wall in the front, the single chip microcomputer controls a loudspeaker to play the distance between the packing case and the wall in the front. Therefore, the ranging type packing case convenient to transport in the stairs can achieve the purpose of conveniently transporting articles in the stairs.

Description

technical field [0001] The invention relates to the field of packaging boxes, in particular to a range-measuring packaging box that is convenient for transportation in stairwells. Background technique [0002] Currently, many large items are heavy and bulky. The current design of the corridors is relatively narrow. Although many residential buildings are equipped with elevators, many older communities and some communities with no more than 6 floors are not equipped with elevators. However, some large-volume items cannot be transported into the elevator, which makes it difficult to transport them from downstairs to upstairs. In narrow corridors, there are relatively small places for people to stand around the items. Shipping is very difficult. Contents of the invention [0003] The object of the present invention is to solve the above problems and propose a distance-measuring packing box that is convenient for transportation in the stairwell, so as to realize the advantag...

AI Technical Summary

Problems solved by technology

[0002] Currently, many large items are heavy and bulky

The current design of the corridors is relatively narrow. Although many residential buildings are equipped with elevators, many older communities and some communities with no more than 6 floors are not equipped with elevators.

However, some large-volume items cannot be transported into the elevator, which makes it difficult to transport them from downstairs to upstairs. In narrow corridors, there are relatively small places for people to stand around the items. very difficult to transport

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