Modular hand-held locking clasp assembly with friction self-locking mechanism

A hand-held locking clasp assembly comprising:

• (a) a housing formed by left and right shell bodies and a mounting point positioned at a front end thereof;
• (b) a strap locking mechanism disposed within the housing, the strap locking mechanism comprising:
• (1) a locking press pin rotatably mounted via a press pin bearing and having an outer surface uniformly formed with protrusions configured to form a multi-point friction surface upon contact with a strap;
• (2) a locking pressure plate pivotally supported by a pressure plate guide post and having a lower surface formed with a pressure plate strap engagement wedge comprising a plurality of uniformly distributed conical columns, the locking pressure plate cooperating with the locking press pin to jointly clamp a strap passing therebetween in a locked state and enabling unidirectional passage of the strap, and permitting free passage of the strap in an unlocked state;
• (3) a reset spring biasing the locking pressure plate toward the locking press pin to maintain tight contact in a static state;
• and
• (c) a linkage and control mechanism configured to switch between the locked and unlocked states, the linkage and control mechanism comprising:
• (1) a linkage pin disposed within a linkage guide slot of the housing;
• (2) a push rod linkage plate cooperating with the linkage pin;
• (3) a control push rod passing through the push rod linkage plate and partially protruding from a control slide groove of the housing;
• and
• (4) control triggers positioned at both ends of the control push rod;
• wherein operating the control triggers drives the locking pressure plate to separate from or press toward the locking press pin to complete state switching between locked and unlocked conditions.