Provided is a buckle locking device for the tonneau cover of pick-up trucks (II), which mainly comprises a load-bearing cross bar, a slider, a handle, a buckle block, a slide fixing block, a T-bar and an extruded aluminum frame, characterized in that: when the load-bearing cross bar and the slider is pressed by the handle of the buckle locking mechanism for buckling, it can generate a downward pulling force, which can be transmitted by the load-bearing cross bar to force the whole tonneau cover frame to generate a downward pressure, so that it can cover the truck bed tightly. Moreover, through the design of the slider mechanism, the T-bar can offer better stability and better positioning. When the buckle locking mechanism is not used, it can also be hidden inside the groove of the slider.

A belt buckle with a replaceable insert is provided. The belt buckle includes a top cover, a bottom plate, a replaceable insert, and a base plate. The top cover includes a first recess. The bottom plate includes a first extruded portion extruding toward the top cover. The replaceable insert includes a second recess. The replaceable insert is disposed at least in part between the top cover and the bottom plate. The first extruded portion is disposed at least in part in the second recess.

A belt buckle with a replaceable insert is provided. The belt buckle includes a top cover, a bottom plate, a replaceable insert, and a base plate. The top cover includes a first recess. The bottom plate includes a first extruded portion extruding toward the top cover. The replaceable insert includes a second recess. The replaceable insert is disposed at least in part between the top cover and the bottom plate. The first extruded portion is disposed at least in part in the second recess.

A buckle assembly includes a first buckle component, a second buckle component and an operating component. The first buckle component includes a locked portion. The second buckle component includes a locking portion. The locking portion engages with the locked portion along a lateral direction of the buckle assembly when the second buckle component is mated with the first buckle component along a mating direction. The operating component is partially embedded in and partially exposed out of the second buckle component. The operating component is slidable relative to the second buckle component. The operating component drives the locking portion to move away from the locked portion for disengaging the locking portion from the locked portion during a sliding movement of the operating component relative to the second buckle component. The present invention has advantage of saving labor and easy operation.

A belt buckle structure includes a buckle body and a plate-based controller. The buckle body is provided with a coupling section and a connection section at two ends thereof. The coupling section is formed with a pivoting notch in a top side and a recess in a bottom side. A pin hole is formed in each of two sides of the buckle body. The plate-based controller includes a coupling axle having a pawl. The coupling axle is arranged in the coupling section. A fixing member has a protruding section fit into the recess. A pin is received through the pint hole to penetrate through the recess and extend into a positioning hole of the fixing member. A primary constraint frame has two side portions collaborating with the pin to attach to two sides of the buckle body.

Provided is a buckle locking device for the tonneau cover of pick-up trucks (II), which mainly comprises a load-bearing cross bar, a slider, a handle, a buckle block, a slide fixing block, a T-bar and an extruded aluminum frame, characterized in that: when the load-bearing cross bar and the slider is pressed by the handle of the buckle locking mechanism for buckling, it can generate a downward pulling force, which can be transmitted by the load-bearing cross bar to force the whole tonneau cover frame to generate a downward pressure, so that it can cover the truck bed tightly. Moreover, through the design of the slider mechanism, the T-bar can offer better stability and better positioning. When the buckle locking mechanism is not used, it can also be hidden inside the groove of the slider.

A buckle assembly includes a first buckle component, a second buckle component and an operating component. The first buckle component includes a locked portion. The second buckle component includes a locking portion. The locking portion engages with the locked portion along a lateral direction of the buckle assembly when the second buckle component is mated with the first buckle component along a mating direction. The operating component is partially embedded in and partially exposed out of the second buckle component. The operating component is slidable relative to the second buckle component. The operating component drives the locking portion to move away from the locked portion for disengaging the locking portion from the locked portion during a sliding movement of the operating component relative to the second buckle component. The present invention has advantage of saving labor and easy operation.

A belt buckle structure includes a buckle body and a plate-based controller. The buckle body is provided with a coupling section and a connection section at two ends thereof The coupling section is formed with a pivoting notch in a top side and a recess in a bottom side. A pin hole is formed in each of two sides of the buckle body. The plate-based controller includes a coupling axle having a pawl. The coupling axle is arranged in the coupling section. A fixing member has a protruding section fit into the recess. A pin is received through the pint hole to penetrate through the recess and extend into a positioning hole of the fixing member. A primary constraint frame has two side portions collaborating with the pin to attach to two sides of the buckle body.

The invention relates to a bracelet clasp including a securing member provided with means for adjusting the useful length of the bracelet, these adjustment means including: a base plate secured and pivotally hinged to the second end of the second strip, the first strand passing between the base plate and the second strip and being held by holding means, second means for locking the base plate in a closed position on the second strip. According to the invention, the second locking means include a push-piece arranged to be moved between a first rest position wherein the base plate is locked in a closed position on the second strip, and a second pushed-in position in which the base plate is released from the second strip.

A belt comprising a strap and a device closing a first end part of the strap with a second end part of the strap, the closing device comprising a support plate fastened to the first end part and a buckle intended to removably receive the second end part, said buckle being rotatable relative to the support plate between an adjusting position and a gripping position, and at least one hook able to cooperate with at least one first opening provided in the second end part so as to fasten the second end part of the strap on the first end part. The hook protrudes from the support plate. The buckle moved away from the support plate in the adjusting position and folded down on said plate in the gripping position such that the hook cooperates with said first opening when the buckle receives the second end part of the strap.