Buckle with safety latch
View Patent ↗The plastic snap buckle is provided with a safety latch slidably mounted to an elongated bar of the male plug of the buckle. The latch member is generally rectangular shape having a length equal to the distance between two arcuate portions formed in the free end portion of two flexible arms of the male plug. The latch member may be slidably to locate between the arcuate portion of the flexible arm so as to prevent the flexible arms to be operated inadvertently or forcefully to release the engagement between the male plug and the female receptacle.
1. A safety snap buckle comprising:
a female receptacle having a shell-like body, two arcuate openings formed in two sides of said body,
an elongated access slot opening formed in a lower wall of said shell-like body,
a male plug having a generally rectangular frame and having two flexible arms extending in a mutually parallel manner from two sides of a front end of said frame forwardly, said flexible arms being flexible inwards towards each other, two arcuate portions formed on a free end of said flexible arms, two hook portions formed on an outer side edge of said flexible arms and adapted to engage with a rear edge of said arcuate openings of said female receptacle when said male plug and said female receptacle are slidably engaged with one another,
an elongated bar formed in said male plug, said elongated bar extending forwardly from a cross bar of said frame and located parallel and spaced equal distance from said flexible arms,
a latch member slidably mounted to said elongated bar, said latch member having a raised button portion adapted to engage with said elongated access slot opening at a lower surface of said female receptacle, said latch member having a length equal to a distance between said arcuate portions of said flexible arms, said raised button portion being operative for slidably locating said latch member selectively at a first position locating between said arcuate portions of said flexible arms and a second position away from said first position.
2. A safety snap buckle according to claim 1 wherein said latch member is generally rectangular in shape.
3. A safety snap buckle according to claim 2 including an elongated slot opening formed in said elongated bar, an inverted T-shaped pin provided at an underside of said latch member, said T-shaped pin slidably engaged with said slot opening of said elongated bar for mounting said latch member slidably on said elongated bar.
4. A safety snap buckle according to claim 3 including a flexible cantilever extension arm extending rearwardly from said latch member, and said raised button portion being formed on top of an end portion of said extension arm.
5. A safety snap buckle comprising:
a generally rectangular female receptacle having shell-like body, two arcuate openings formed in two sides of said body,
an elongated access slot opening formed in a lower wall of said shell-like body,
a male plug having a generally rectangular frame and having two flexible arms extending forwardly in a mutually parallel manner from two sides of a front end of said frame, said flexible arms being flexible inwards towards each other, two arcuate portions formed at a free end portion of said flexible arms, said arcuate portions having an inner edge spaced from one another a predetermined distance,
two hooks formed in an outer side wall of said flexible arms and located adjacent to a rear end of said arcuate portions and adapted to engage with a rear edge of said arcuate openings of said female receptacle when said male plug is inserted into said female receptacle for locking said male plug and female receptacle together,
an elongated bar formed in said male plug, said elongated bar extending forwardly from a cross bar of said frame and located parallel to and spaced equal distance from said flexible arms,
a latch member slidably mounted to said elongated bar,
a cantilever arm extending rearwardly from a rear edge of said latch member, said cantilever arm being flexible in up and down directions,
a raised button portion formed on an undersurface at a free end of said cantilever arm, said raised button portion engaging with said access slot opening in said lower wall of said female receptacle when said male plug is inserted into said female receptacle, and said raised button portion being operative for slidably locating said latch member selectively at a first position located between and juxtaposed to said arcuate portions of said flexible arms and a second position away from said arcuate portions of said flexible arms.
6. A safety snap buckle according to claim 5 including an inverted T-shaped pin extending downward from an under surface of said latch member, said inverted T-shaped pin slidably engaging with an elongated slot formed in said elongated bar.