Continuous telescopic device for tripod

Abstract

The invention relates to a continuous telescopic device for a tripod, which comprises a large telescopic tube and a small telescopic tube which are both circular tubes and telescopically connected with each other. A rotary locking mechanism is arranged between the large telescopic tube and the small telescopic tube and comprises a rotary portion and more than one locking plate, wherein the rotary portion is fixed to one end of the small telescopic tube. The rotary portion is provided with a rotary locking groove with an eccentric arc face at the bottom, and the locking sheets are slidably arranged in the rotary locking groove and connected with the eccentric arc face and the inner lateral wall of the small telescopic tube in a lockable and releasable manner. The continuous telescopic device is simple, easy and quick in operation, and the problems of labor consumption in releasing and retracting and failure of releasing caused by the facts that the larger tube is easy to loosen and cannot be tightly locked when stressed slightly and the small tube is easy to be deadlocked when stressed excessively are completely solved. In addition, the continuous telescopic device is simple in structure, durable, attractive in appearance, free of limit on processing materials and more flexible and convenient in production, various grade requirements can be met, and marketing promotion and popularization can be benefited.

Description

technical field [0001] The invention relates to the technical field of tripods, in particular to a continuous telescopic device for tripods. Background technique [0002] So far, the existing tripods are all composed of several sections of tubes, and each section of the tubes is connected by a C-shaped locking piece and a cam structure. When using it, it must be locked section by section, and the user exerts too much force, which causes This traditional structure is prone to the phenomenon that the C-shaped locking piece rotates in the tube under force, making it impossible to lock and use; for this reason, Japan Weirubao Seiki Industry Co., Ltd. has developed a telescopic device for tripods, and applied for Patent (patent application No. 00802299.2), the telescopic device is a fan-shaped (arc-shaped) telescopic tube, and the shape of each tube is the same. Tighten several tubes; however, because the size of each tube is different, the force required for locking the rotary ...

AI Technical Summary

Problems solved by technology

[0002] So far, the existing tripods are all composed of several sections of tubes, and each section of the tubes is connected by a C-shaped locking piece and a cam structure. When using it, it must be locked section by section, and the user exerts too much force, which causes This traditional structure is prone to the phenomenon that the C-shaped locking piece rotates in the tube under force, making it impossible to lock and use; for this reason, Japan Weirubao Seiki Industry Co., Ltd. has developed a telescopic device for tripods, and applied for Patent (patent application No. 00802299.2), the telescopic device is a fan-shaped (arc-shaped) telescopic tube, and the shape of each tube is the same. Tighten several tubes; however, because the size of each tube is different, the force required for locking the rotary knob is different. Therefore, if the user uses too little force during operation, the larger tube will easily break. If the force is too large, the smaller tube will easily lock up, which will cause too much effort when loosening and retracting, and even cannot be loosened; in addition, the telescopic tube with this shape and structure Carbon fiber tubes cannot be used for production and processing, only aluminum tubes can be used, which is not durable, which brings restrictions on production, and the appearance is not beautiful, so it can only be used in the production of low-end tripods

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