Fast stretching or retracting, safe positioning and synchronous leg device, unipod and tripod

Abstract

The invention discloses a fast stretching or retracting, safe positioning and synchronous leg device, a unipod and a tripod. The fast stretching or retracting, safe positioning and synchronous leg device comprises a tube connecting piece, an outer tube, at least one second inner tube and / or first inner tube which are matched to form a plurality of sections or a plurality of groups of telescopic legs, the tube connecting piece is connected with the outer tube, one end parts of the first inner tubes are provided with positioning lock devices, the other end parts of the first inner tubes are provided with feet, and one side parts of the feet are provided with keys or switches for controlling whether abutting pieces or pull wires are matched with the positioning lock devices for unlocking. A positioning tongue part penetrates through a transverse positioning structure of a leg positioning hole for positioning, so that the legs do not need to be unlocked in advance before stretching or retracting, the legs can stretch or retract only by pressing the keys, and safe and automatic positioning can be quickly realized; and in addition, the legs can form the tripod and the unipod, and about one third of load bearing can be increased on the basis of common universal legs.

Description

technical field [0001] The invention relates to the technical field of tripods, more specifically, to a leg tube device, a monopod and a tripod that can be extended or retracted quickly, positioned safely and synchronized. Background technique [0002] The tripods in the prior art are almost all made up of several telescopic leg tubes, and each segment of the leg tubes is basically locked by threads or eccentric bumps or eccentric tubes, and some even use bolts to tighten them. However, the above-mentioned technical structure must be unlocked in advance when the leg tube is extended or retracted, then pulled out or retracted, and then locked again, which is very inconvenient to operate during use. It has some deficiencies or has some more serious shortcomings for a long time. The "Quick retractable positioning and easy to open quadruped or tripod" I applied for on 20210115 is an exception to another locking structure. In addition, using the above-mentioned structure to loc...

AI Technical Summary

Problems solved by technology

In addition, using the above-mentioned structure to lock the leg tubes is easy to loosen, because they all use the principle of pressing and locking, but this kind of locking is not locking in the real sense, and even if the so-called locking has been carefully achieved, every The legs of each section of the group may still be locked due to frequent use or excessive gaps or heavy loads, and as long as one of the telescopic tubes is loose, one of the legs of the tripod can be retracted at any time. The tripod is not stable, it is easy to fall over, and it may even break the equipment on the tripod

In addition, the weight of the above-mentioned tripod support equipment is also very limited. In order to solve the problem of small load-bearing legs, many manufacturers choose more expensive materials, and some make the legs thicker and thicker. However, this method will only increase slightly. A little friction or a slight increase in load-bearing can not fundamentally solve the problem of heavy-duty legs

Also, especially the tripod legs in the known products or prior art cannot be synchronized quickly and simultaneously when stretching out or retracting, and cannot be positioned safely at multiple points.

Images