Folder convenient to use

The utility model discloses a folder convenient to use. The folder comprises a first folding pipe, a second folding pipe and a knob, the bottom of the first end of the first folding pipe is hinged to the bottom of the first end of the second folding pipe. The top of the first end of the first foldin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ZHU YANGEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CYCLE AXLE SUSPENSIONS CYCLE FRAMES CYCLE SIDE-CARS, FORECARS, OR THE LIKE CYCLE STEERING DEVICES CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS PERFORMING OPERATIONS RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model discloses a folder convenient to use. The folder comprises a first folding pipe, a second folding pipe and a knob, the bottom of the first end of the first folding pipe is hinged to the bottom of the first end of the second folding pipe. The top of the first end of the first folding pipe and the top of the first end of the second folding pipe are provided with a first locking block and a second locking block which are matched with each other respectively, and a clamping groove matched with the first locking block and the second locking block is formed in the rotary knob. A threaded hole is formed in the first locking block; a threaded rod matched with the threaded hole is arranged on the knob; when the threaded rod is screwed downwards into the threaded hole, the rotary knob covers the first locking block and the second locking block in a matched mode through the clamping grooves, and a self-locking structure is formed. The self-locking device is simple and reasonable in structure, low in co