Locking structure of telescopic rod

Abstract

The invention discloses a locking structure of a telescopic rod. The locking structure comprises an outer rod body and an inner rod body, wherein the locking structure is arranged on the part where the outer rod body and the inner rod body are connected; the locking structure comprises a fixed connecting piece, a rotary piece and a pressing block; the fixed connecting piece comprises an outer rodfixing part and an inner rod penetrating part; at least one pressing block groove, which runs through the sidewall of the inner rod penetrating part, is uniformly distributed along the circumferentialdirection of the sidewall, and a pressing block is placed in the pressing block groove; at least convex block is uniformly distributed along the circumferential direction of the inner wall of the rotary piece; the at least one convex block and the pressing block are consistent in quantity and distribution mode; either the at least one convex block or the pressing block is gradually increased fromcontact ends of the at least one convex block and the pressing block to the other ends in a circumferential direction; and the rotary piece sleeves outside the inner rod penetrating part and the pressing block and is capable of rotating along axis. The locking structure provided by the invention is simple in structure, convenient for molding and assembling and is suitable for promotion and production; and in addition, the locking structure is stable in structure locking and long in service life.

Description

technical field [0001] The invention belongs to the technical field of cleaning appliances, in particular to a locking structure on a telescopic rod. Background technique [0002] The mop is a cleaning tool commonly used in people's daily life. Most of the mops currently used can be stretched up and down. The structure generally includes an upper connecting rod and a lower connecting rod sleeved in the upper connecting rod. For the relative sliding of the rod and the lower connecting rod, a locking structure is often provided at the junction of the upper connecting rod and the lower connecting rod, but the locking structure in the prior art is more complicated and inconvenient to use. [0003] Patent No. CN202568131U "a telescopic mop rod", the fastening device adopts the cooperation of the handle and the elastic collar, and the handle is loosened and clamped by opening and closing the handle. The handle of the mop rod is hinged with the elastic collar, and the handle There...

AI Technical Summary

Problems solved by technology

[0002] The mop is a cleaning tool commonly used in people's daily life. Most of the mops currently used can be stretched up and down. The structure generally includes an upper connecting rod and a lower connecting rod sleeved in the upper connecting rod. The relative sliding of the rod and the lower connecting rod is often provided with a locking structure at the junction of the upper connecting rod and the lower connecting rod, but the locking structure in the prior art is more complicated and inconvenient to use

[0003] Patent No. CN202568131U "a telescopic mop rod", the fastening device adopts the cooperation of the handle and the elastic collar, and the handle is loosened and clamped by opening and closing the handle. The handle of the mop rod is hinged with the elastic collar, and the handle There is a clip against the sleeve rod on the top, and a gap for the clip to pass through is opened in the elastic collar. When the handle is closed, the clip presses against the sleeve rod to make it tightly connected with the elastic collar. Due to the rotation axis when the handle is opened It is perpendicular to the expansion and contraction direction of the sleeve rod, so when the mop rod is stressed, it will exert force on the clip. In order to prevent the clip from being forced to open the handle by mistake, the mop rod needs to be equipped with a positioning mechanism, that is, the arc groove on the elastic collar And the arc-shaped protrusion on the handle that matches the arc-shaped groove has a complicated structure, and it cannot be fastened stably over time, and the service life is not long

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