Casing pipe with built-in pressure telescopic self-locking structure

Abstract

The invention discloses a casing pipe with a built-in pressure telescopic self-locking structure. The casing pipe comprises an outer pipe and an inner pipe capable of sliding in the outer pipe, and the inner pipe is connected with an extruding piece; an elastic sleeve which is extruded by the extruding piece to expand so as to achieve locking of the outer pipe and the inner pipe is arranged between the extruding piece and the outer pipe; one end of the elastic sleeve is connected with a guiding piece, and the other end of the elastic sleeve is provided with an outer pipe connection sleeve, wherein the outer pipe connection sleeve is arranged outside the inner pipe in a sleeving manner, connected with the outer pipe and used for preventing the inner pipe from sliding out of the outer pipe;the extruding piece is connected with a guiding piece, wherein the guiding piece and the extruding piece rotate mutually to achieve axial movement so that the elastic sleeve can break away from extruding by the extruding piece; a screw connected with the extruding piece is arranged in the guiding piece, and is sleeved with a spring, wherein one end of the spring is connected with the screw, and the other end of the spring is connected with the guiding piece; the extruding piece is externally provided with an outer conical face, and an inner bevel matched with the outer conical face is arrangedin the elastic sleeve; and due to the fact that the inner pipe and the outer pipe are directly stretched to expand and the outer pipe and the inner pipe are mutually screwed to achieve unlocking shrinking, operation is easy and convenient.

Description

[technical field] [0001] The invention relates to a casing with a built-in pressure telescopic self-locking structure. [Background technique] [0002] The existing telescopic self-locking structure applied to the telescopic sleeve of the photographic frame realizes locking and fixing or unlocking and stretching between the two sleeves by rotating the mounting sleeve. Therefore, when the length of the sleeve is adjusted many times, it is necessary to repeatedly rotate the mounting sleeve to lock Locking and unlocking, the operation is cumbersome, especially inconvenient to adjust the length between the tripod sleeves of the photography tripod, and at the same time, when the locking and fixing of the rotating mounting sleeve is forgotten or the rotating locking is not in place, it is easy to lose balance during use and break the equipment. [Content of the invention] [0003] The present invention overcomes the shortcomings of the above-mentioned technologies, and provides a ...

AI Technical Summary

Problems solved by technology

[0002] The existing telescopic self-locking structure applied to the telescopic sleeve of the photographic frame realizes locking and fixing or unlocking and stretching between the two sleeves by rotating the mounting sleeve. Therefore, when the length of the sleeve is adjusted many times, it is necessary to repeatedly rotate the mounting sleeve to lock Locking and unlocking, the operation is cumbersome, especially it is not convenient to adjust the length of the tripod sleeve of the photography tripod, and at the same time, if you forget to turn the installation sleeve to lock and fix or the rotation lock is not in place, it is easy to lose balance during use and break the equipment

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