Press-control retaining device

A press-control retaining device comprising:

• a casing, said casing comprising a top-open receiving chamber, and two springy engagement flanges disposed at two sides of said top-open receiving chamber, said engagement flanges each having a downwardly inwardly extended hooked portion;
• spring means mounted inside said top-open receiving chamber of said casing;
• a retainer member supported on said spring means in said casing and adapted for securing to an external object, said retainer member comprising a substantially -shaped bottom positioning base supported on said spring means inside said casing, and two springy arms upwardly outwardly extended from said bottom positioning base and adapted for clamping on an external object, said bottom positioning base comprising two first hooked portions bilaterally disposed at a bottom side, two stop flanges bilaterally disposed at a top side, and two second hooked portions respectively spaced between said first hooked portions and said stop flanges, said first and second hooked portions each having a beveled bottom edge;
• and
• a slide coupled to said retainer member between said stop flanges and said second hooked portions and moved up and down in said top-open receiving chamber of said casing, said slide having a center opening, which receives said bottom positioning base of said retainer member;
• wherein when pressing an external object on the retainer member to force said second hooked portions into engagement with the hooked portions of said engagement flanges of said casing, said arms are compressed inwards by a peripheral wall of said top-open receiving chamber of said casing and clamped on the external object;
• when pushing the external object to move said retainer member downwards to a bottom limit position in said casing and to force said slide against the hooked portions of said engagement flanges and then releasing the pressure from the external object, said first hooked portions are forced by said spring means into engagement with the hooked portions of said engagement flanges, and said arms are returned to their former shape and released from the external object.