Tube-positioning device for a breathing mask

摘要

A tube-positioning device mounted on a breathing mask and holding a breathing tube has a headgear buckle and a tube retainer. The headgear buckle has a pivot bracket formed thereon and having a pivot hole defined through the pivot bracket and an annular groove defined radially in the pivot bracket. The tube retainer is mounted detachably and rotatably on the headgear buckle and has two resilient arms, a clamping recess, a pivot shaft and two hooking arms. The resilient arms are curved and the clamping recess is formed between the resilient arms. The hooking arms are formed respectively on and protrude down from the resilient arms and detachably engage and hook in the annular groove of the pivot bracket. Pressing the resilient arms toward each other disengages the hooking arms from the annular groove to rapidly detach the tube retainer from the headgear buckle.

主权项

1. A tube-positioning device for a breathing mask comprising:
a headgear buckle having
two assembling holes defined through the headgear buckle; anda pivot bracket formed on the headgear buckle, located between the assembling holes and having
a top;an outer surface;a pivot hole defined through the pivot bracket; andan annular groove defined radially in the outer surface; and a tube retainer mounted rotatably and detachably on the headgear buckle and having
two resilient arms;a pivot shaft formed on and protruding down from the resilient arms and mounted rotatably in the pivot hole of the pivot bracket, wherein the resilient arms are curved and symmetrically extend outward from a top of the pivot shaft;
a clamping recess formed between the resilient arms; andtwo hooking arms formed on and protruding respectively down from the resilient arms and each hooking arm having a hook formed on and protruding from the hooking arm and detachably engaging the annular groove of the pivot bracket of the headgear buckle; wherein pressing the resilient arms toward each other disengages the hooks of the hooking arms from the annular groove of the pivot bracket.