초록 ▼

An anti-loosening buckle mounted at the hose connector body of a hose connector for locking an adapter mouthpiece includes a locking lever, a stop device, an interlocking member, and a position-limiting member. The locking lever is pivotally connected to the hose connector body and has a cam portion

An anti-loosening buckle mounted at the hose connector body of a hose connector for locking an adapter mouthpiece includes a locking lever, a stop device, an interlocking member, and a position-limiting member. The locking lever is pivotally connected to the hose connector body and has a cam portion and an operating grip respectively disposed at two opposite ends. The stop device is slidably coupled to the operating grip. The interlocking member is coupled between the stop device and the hose connector body. The position-limiting member is mounted at the operating grip. When the locking lever is in the locking position, the bottom side of the stop device is abutted against the position-limiting member to lock the locking lever. When the position-limiting member is pulled away from the stop device, the locking lever is released from the constraint and can be freely biased.

대표청구항 ▼

1. An anti-loosening buckle for mounting at one side of a hose connector body to lock an inserted adapter mouthpiece, the anti-loosening buckle comprising a locking lever, a stop device, an interlocking member and a position-limiting member, wherein: said locking lever comprises a cam portion locate

1. An anti-loosening buckle for mounting at one side of a hose connector body to lock an inserted adapter mouthpiece, the anti-loosening buckle comprising a locking lever, a stop device, an interlocking member and a position-limiting member, wherein: said locking lever comprises a cam portion located at a first end thereof and pivotally connecting to said hose connector body at a first location and an operating grip located at an opposing second end thereof, said operating grip defining an outer surface and an opposing inner surface, said locking lever being biasable relative to said hose connector body between a locking position and an unlocking position;said stop device is coupled to and slidable along a length of said operating grip, comprising a stopper protrusion adapted for abutting against said position-limiting member to hold down said locking lever in said locking position; said interlocking member has a first side thereof pivotally connected to said hose connector body at a second location, and an opposing second side thereof inserted through said stop device and adapted for moving said stop device to slide along said operating grip in a direction from the second end towards the first end of said locking lever when said locking lever is biased downward from said unlocking position to said locking position;said position-limiting member is inserted through said operating grip of said locking lever and abutted against the said outer surface of said operating grip subject to an elastic restoring force thereof, said position-limiting member being movable away from the said outer surface of said operating grip by an external force for allowing said locking lever to be biased from said locking position to said unlocking position. 2. The anti-loosening buckle as claimed in claim 1, wherein said first location and said second location of said hose connector body are located on an outer periphery of said hose connector body at one lateral side on substantially the same level relative to an end of said hose connector body and spaced from each other. 3. The anti-loosening buckle as claimed in claim 1, wherein said stop device comprises a base plate abutted at the said outer surface of said operating grip, and two pivot connection lugs respectively and integrally connected to two opposite lateral sides of said base plate, said base plate having a first end facing towards the first end of said locking lever and a second end facing towards the second end of said locking lever, an outer surface of said base plate having a part adjoining the second end of said base plate and forming said stopper protrusion, said two pivot connection lugs each defining therein a first through hole; and said second side of said interlocking member is inserted through the said first through holes of said two pivot connection lugs. 4. The anti-loosening buckle as claimed in claim 3, wherein said stopper protrusion defines a bevel edge on a side thereof facing towards the first end of the locking lever, said bevel edge being connected to an outer surface of said base plate. 5. The anti-loosening buckle as claimed in claim 3, wherein said interlocking member is a C-shaped ring comprising a ring body inserted through the said first through holes of said two pivot connection lugs, and two opposite end portions respectively pivotally connected to said hose connector body at said second location. 6. The anti-loosening buckle as claimed in claim 1, wherein said operating grip of said locking lever comprises a through hole cut through two opposite lateral sides thereof, a first plug hole located on one of the lateral sides and disposed adjacent to the said through hole of said operating grip and a second plug hole located on the other lateral side and disposed adjacent to the said through hole of said operating grip; said position-limiting member is a coil of two turns, said coil comprising a coil body inserted through the said through hole of said operating grip of said locking lever and two end pieces respectively plugged in said first plug hole and said second plug hole. 7. The anti-loosening buckle as claimed in claim 6, wherein said coil further comprises a curved portion adapted for abutting against the said inner surface of said operating grip when said coil is pulled away from the said outer surface of said operating grip by an external force. 8. The anti-loosening buckle as claimed in claim 6, wherein said coil is an oval coil, a circular coil or a rectangular coil. 9. A hose connector using a plurality of the said anti-loosening buckles as claimed in claim 1, comprising a hose connector body defining a tubular receptacle, two pivot blocks respectively located at an outer periphery of said hose connector body at two opposite sides, an opening transversely cut through each of said pivot blocks and said receptacle, and two said anti-loosening buckles respectively pivotally connected to said pivot blocks for locking an adapter mouthpiece to said tubular receptacle of said connector body, the said first location and said second location of each said anti-loosening buckle being respectively located on two first pivot holes and two second pivot holes of the respective said pivot block, the said cam portion of the said locking lever of each of said anti-loosening buckles being inserted from a respective one end of said opening into the inside of said receptacle.