In a cross-section perpendicular to the extending direction of a support part, a first bar has a holding part that holds a belt together with a leading end part and a winding part on which the belt is wound. A third bar is positioned on one side of a virtual line connecting a point at the holding part at which the belt is held together with the leading end part of a moving part and a point at the support part of the moving part before being moved. An operating part of the moving part extends from the support part to the other side relative to the virtual line , and a biasing part of the moving part generates biasing force in such a direction that the leading end part is moved toward the first bar.

A buckle portion has a buckle body, at least one elastic locking leg connected to the buckle body, and a locking element comprising a plate having an actuation element. The locking element is connected to the elastic locking leg and is movable relative to the elastic locking leg by moving the actuation element between a locked position and an unlocked position. In the unlocked position, the elastic locking leg is movable so as to release the buckle portion from a corresponding buckle receptacle. In the locked position, the locking element prevents flexing of the elastic locking leg even under external pressure to keep the buckle portion from being released.

A buckle includes two coupling modules coupled separably to each other. Each of the coupling modules includes a main unit including a hook member and a coupling member that has a retaining portion, and an operating member having an operating portion and a pushing portion. The hook member of each of the coupling modules is engaged with the retaining portion of the other one of the coupling modules. The operating portions of the operating members of the coupling modules are movable toward each other, during which the pushing portion of each of the coupling modules pushes the hook member of the other one of the coupling modules to disengage said hook member from the retaining portion of the coupling module.

Locking device having first and second combined connection carriers for establishing a detachable connection. A rotation element is rotatably attached at the first connection carrier and is provided in an inner region thereof. The inner region is centered with respect to a center axis and has a full radius. Elastic blocking heads are attached at the first connection carrier at the inner region, and are movable from a blocking to a release position. The rotation element includes segments extending up to the full radius and segments extending at a maximum up to a smaller inner radius. The segments extending up to the full radius move blocking heads into the release position and the segments extending up to the inner radius leave blocking heads in the blocking position. Key tongues move bordering ones of the blocking heads into the release position and allow rotation of the rotation element.

A buckle assembly including a first portion, a second portion, an actuator and a lever. The first portion includes a hollow body, an open top, a locking slot extending through the hollow body and a fulcrum. A second portion of the buckle includes a base opposite of a locking leg, the locking leg including a cavity, and a channel. Inserting the second portion into the hollow body through the open top of the first portion causes the locking leg to engage the locking slot and to lock the first portion to the second portion. An actuator slideably engaged to the channel and includes an arm slideably connected to the cavity. Applying a force to the actuator causes the arm to withdraw the locking leg, disengaging the locking leg from the locking slot. A lever is mounted on the fulcrum to apply the force to the actuator when the lever is pulled.

The present invention discloses an automatic magnetic buckle, which comprises a matching clamping head and a buckle base. The said clamping head comprises a clamping head housing, and the said clamping head housing has a cavity extending through the upper and lower ends of the clamping head housing. The said cavity is set with a buckle subassembly, the said buckle base is set with a clamping head matching with the said buckle subassembly, and the said clamping head and the buckle base are set with magnetic subassemblies which are mutually attracted. Clamping head and buckle base are attracted together through the matching of the magnetic subassembly. The buckle subassembly is matched with the clamping head to securely connect the clamping head and the buckle base. The present invention also discloses a method of using the automatic magnetic buckle.

A tool belt (1) comprises a belt strap (2) and a belt buckle (3), wherein the belt buckle (3) comprises a male (5) and a female part (7). The male part (5) comprises a latch plate (27) and the female part (7) comprises a female interface (9) for receiving the latch plate (27). The latch plate (27) is attached to a first end (2a) of the belt strap (2) and the female part (7) is attached to a second end (2b) of the belt strap (2), and the female part (7) comprises a locking mechanism (15) adapted for connection and disconnection of the latch plate (27) to or from the female interface (9), and a length adjustment mechanism (17) adapted for adjustment of the length of the belt strap (2).

A buckle assembly for selectively connecting first and second straps of a personal protective device. The buckle assembly includes a receiver member and a latch member configured for coupling to a respective one of the straps. The receiver member defines a slot and provides a release arm. The latch member includes a latch tab pivotally connected to a base. In a latched state in which the latch member is disposed within the slot and a latch face is engaged with a capture surface. The release arm disposed over a portion of the latch tab. The latch face can be disengaged from the capture surface in response to an actuation force applied to the release arm. In some embodiments, the receiver member and the latch member incorporate various, complimentary guide surfaces that promote easy insertion of the latch member into the receiver member.

A system and method for a locking mechanism that includes an ability to indicate that a fall event has occurred as well as indicate proper engagement via a signal cable coupled through a harness. The locking mechanism includes a mechanical indicator that is disposed within the locking mechanism (as opposed to far away from the locking mechanism at a remote cable attachment point) that can visually indicate that a fall event has occurred. Further, the locking mechanism includes electronic components including three magnetic actuators and corresponding electronic switches that signal change of state. Locking tabs and a leading edge of the insert respectively include the three magnetic actuators. The electronic switches, which may be magnetically activated reed switches, signal status change to an external controller and, optionally, an external computer.

An attachment device for use with a wearable item includes a first cord end and a second cord end. The first cord end has restricting grooves and the second cord end has a buckle unit. The restricting grooves include a first groove and a second groove, and the buckle unit includes a first buckle and a second buckle. The first groove restricts the first buckle to an X-axis movement, and the second groove restricts the second buckle to movements along Y and Z axes when the first cord end is connected with the second cord end. The X, Y, and Z axes are each perpendicular to the other two. A wearable device using such an attachment device is also provided.