Liftable writing case with concealed lock fastener

Abstract

The invention discloses a liftable writing case with a concealed lock fastener. The liftable writing case comprises a case body and a handle, the handle comprises a holding portion and connection ends, the case body comprises a case cover and a body portion, and the two connection ends of the handle are hinged to the case body respectively. The joint of the side wall of the case body with at leastone end of the handle is provided with a circular boss while the corresponding connection end of the handle is provided with a conical frustum shaped cavity fitting the circular boss. The circular boss is formed by combination of a first boss larger than a semicircle and a second boss smaller than the semicircle, the first boss and the second boss are arranged on the box cover and the body portion respectively, the corresponding connection end of the handle is rotationally arranged on the first boss, the side wall of the conical frustum shaped cavity is provided with a notch matched with thearc length or radian of the second boss, and the width of the notch is larger than or equal to the height of the second boss. When the handle is in a lifting state, the notch and the second boss are staggered peripherally. The liftable writing case which is an easy-to-open split writing case has advantages of simple structure, convenience in processing and attractiveness in appearance.

Description

technical field [0001] The invention belongs to the technical field of pencil case, in particular to a portable pencil case with an invisible lock. Background technique [0002] With the continuous development of technology, people have higher and higher requirements for the use of stationery. Not only do they need more practicality, but they also hope that the appearance of the stationery will be more beautiful. The stationery box has also evolved from the original single function to a multi-functional stationery box. At present, the stationery box generally includes a lid and a box body, and the connection methods of the lid and the box body are generally divided into integral type, split type, hinged type, and the like. In recent years, pencil cases with portable functions have been more and more accepted by the market, because consumers do not need to buy another stationery bag because they need to carry a pencil case when purchasing such a pencil case with portable func...

AI Technical Summary

Problems solved by technology

Among them, the split-type box cover and the box body are easy to separate, causing the stationery to drop or be lost, and increasing the tightness between the box cover and the box body is likely to cause inconvenience in use. It is relatively large, and it is easy to cause stationery to be scattered or hand injury due to excessive use, and it is not very beautiful to set the lock on the surface of the box body and the box cover

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