This application is a national stage application of International Patent Application No. PCT/CN2019/083149, which is filed on Apr. 18, 2019, and claims priority to Chinese Patent Application No. 201811314955.9, filed on Nov. 6, 2018, and entitled “Expandable Baton”.

TECHNICAL FIELD

The disclosure relates to a technical field of police equipment, and particularly to an expandable baton.

BACKGROUND

In an art known to inventors, a mechanical expandable baton includes a plurality of sleeves and a multi-plate type locking structure. The multi-plate type locking structure moves along a radial direction of the sleeves to implement locking and unlocking of two adjacent sleeves. However, under influence of plate type structure, the expandable baton known to the inventors has the shortcomings of many parts, complex structure, high cost, weak strength, high damage rate and the like.

SUMMARY

Some embodiments of the present disclosure provide an expandable baton, so as to solve problems of complex structure and weak strength of an expandable baton known to the inventors.

Some embodiments of the present disclosure provide an expandable baton, which includes: a plurality of sleeves, the plurality of sleeves being retractably disposed in sequence in a nesting manner; a positioning ring, the positioning ring being provided with an avoiding hole; a plurality of locking pieces, wherein the plurality of locking pieces are disposed at intervals around a peripheral side of the positioning ring and enclose an avoiding space, each of the plurality of locking piece is connected with a sleeve, positioned on an inner side, of two adjacent sleeves in the plurality of sleeves, first axial ends of the plurality of locking pieces extend into the sleeve positioned on the inner side, and second axial ends of the plurality of locking pieces extend out of the sleeve positioned on the inner side and are stuck in a sleeve, positioned on an outer side, of the two adjacent sleeves to lock the two adjacent sleeves in an extending state; and an unlocking rod, wherein the unlocking rod is retractably disposed in the sleeve, positioned on the outer side, of the two adjacent sleeves, and when the unlocking rod extends into the avoiding space and, after passing through the avoiding hole, is pressed against the first axial ends of the plurality of locking pieces, the first axial ends of the plurality of locking pieces extend outwards under a pressing action of the unlocking rod, and the each of the plurality of locking pieces rotates by taking the positioning ring as a fulcrum, so that the second axial ends of the plurality of locking pieces are radially retracted and separated from the sleeve, positioned on the outer side, and make the two adjacent sleeves in a free extension and retraction state.

In an exemplary embodiment, a clamping groove is formed in an inner wall of the sleeve, positioned on the outer side, of the two adjacent sleeves, a clamping flange is disposed at the second axial end of the each of the plurality of locking pieces, and the clamping flange extends into the clamping groove to clamp and connect the each of the plurality of locking pieces and the sleeve, positioned on the outer side, of the two adjacent sleeves; and the clamping flange withdraws from the clamping groove under a pushing action of the unlocking rod to separate the each of the plurality of locking pieces from the sleeve, positioned on the outer side, of the two adjacent sleeves.

In an exemplary embodiment, the expandable baton further includes positioning grooves formed in the plurality of locking pieces, the positioning ring includes a positioning ring body and a plurality of positioning bumps disposed on a peripheral surface of the positioning ring body in a protruding manner, the positioning bumps cooperates with the positioning grooves in a clamping manner, the plurality of locking pieces cooperate with the plurality of positioning bumps in a one-to-one correspondence manner, and the avoiding hole is formed in the positioning ring body.

In an exemplary embodiment, an avoiding groove is formed in an inner wall surface of the sleeve positioned on the inner side, of the two adjacent sleeves, so as to form a limiting bump at a pipe orifice of the sleeve, positioned on the inner side, of the two adjacent sleeves, a limiting groove is formed in an outer wall surface of the each of the plurality of locking piece, and the limiting bump extends into the limiting groove to clamp and connect the each of the plurality of locking piece and the sleeve positioned on the inner side, of the two adjacent sleeves.

In an exemplary embodiment, the expandable baton further includes an elastic ring, and the elastic ring is disposed on a peripheral side of the plurality of locking pieces in a sleeving manner.

In an exemplary embodiment, the elastic ring includes a first elastic ring and a second elastic ring, the first elastic ring is disposed at the first axial ends of the plurality of locking pieces in the sleeving manner, and the second elastic ring is disposed at the second axial ends of the plurality of locking pieces in the sleeving manner.

In an exemplary embodiment, a first positioning groove adapted to the first elastic ring is formed in a peripheral surface of the first axial end of each of the plurality of locking pieces, a second positioning groove adapted to the second elastic ring is formed in a peripheral surface of the second axial end of each of the plurality of locking pieces, and the second positioning groove is positioned between the clamping flange and the first positioning groove.

Some embodiments of the present disclosure provide an expandable baton, which includes: a plurality of sleeves, the plurality of sleeves being retractably disposed in sequence in a nesting manner; a lock body, wherein the lock body is provided with an avoiding space, a peripheral surface of the lock body is connected with a sleeve positioned on an inner side, of two adjacent sleeves in the plurality of sleeves, a first axial end of the lock body extends into the sleeve, positioned on the inner side, of the two adjacent sleeves, and a second axial end of the lock body extends out of the sleeve, positioned on the inner side, of the two adjacent sleeves and is stuck in a sleeve, positioned on an outer side, of the two adjacent sleeves, so as to lock the two adjacent sleeves in an extending state; and an unlocking rod, wherein the unlocking rod is retractably disposed in the sleeve, positioned on the outer side, of the two adjacent sleeves, and when the unlocking rod extends into the avoiding space and is pressed against the first end of the lock body, the lock body is elastically deformed under a pressing action of the unlocking rod, so that the second axial end of the lock body radially retract and separate from the sleeve, positioned on the outer side, of the two adjacent sleeves and make the two adjacent sleeves in a free extension and retraction state.

In an exemplary embodiment, the lock body includes a plurality of long-strip bodies connected end to end; or a plurality of avoiding nicks circumferentially formed at intervals are formed on the lock body, and the plurality of avoiding nicks extend along an axial direction of the lock body.

In an exemplary embodiment, a clamping groove is formed in an inner wall of the sleeve, positioned on the outer side, of the two adjacent sleeves, a clamping tooth is disposed at the second axial end of the lock body, and the clamping tooth extends into the clamping groove to clamp and connect the lock body and the sleeve, positioned on the outer side, of the two adjacent sleeves; and the clamping tooth withdraw from the clamping groove under a pushing action of the unlocking rod to separate the lock body from the sleeve, positioned on the outer side, of the two adjacent sleeves.

With adoption of the technical solutions of some embodiments of the disclosure, the positioning ring and the plurality of locking pieces are disposed on the basis of a lever principle, and the second axial ends of the plurality of locking pieces extend out of the sleeve positioned on the inner side and are stuck in the sleeve positioned on the outer side, thereby preventing axial relative movement between two adjacent sleeves and locking the two adjacent sleeves in the extending state; and the unlocking rod is pressed against the first axial ends of the locking pieces under an action of an external force, and the each of the plurality of locking pieces rotate by taking the positioning ring as the fulcrum, thereby enabling the second axial ends of the plurality of locking pieces to move towards a direction far away from the sleeve, positioned on the outer side, of the two adjacent sleeves and finally be separated from the sleeve positioned on the outer side, and making two adjacent sleeves in the free extension and retraction state.

With adoption of the technical solutions of some embodiments of the disclosure, the lock body which is deformed by use of its own elastic property is disposed on the basis of the lever principle, and the second axial end of the lock body extends out of the sleeve, positioned on the inner side, of two adjacent sleeves and is stuck in the sleeve, positioned on the outer side, of the two adjacent sleeves, thereby preventing axial relative movement between two adjacent sleeves and locking the two adjacent sleeves in the extending state; and the unlocking rod is pressed against the first axial end of the lock body under the action of the external force, and the lock body is deformed, that is, the first axial end of the lock body extends while the second axial end of the lock body retracts, until the second axial end of the lock body is separated from the sleeve, positioned on the outer side, of two adjacent sleeves, thereby making two adjacent sleeves in the free extension and retraction state.

Compared with a plate type locking structure of an expandable baton known to inventors, a locking structure of the expandable baton provided in some embodiments of the disclosure has the characteristics of simple structure and strong strength.

