The invention relates to a coupling for connecting construction parts, a truss provided therewith and associated meth od and use. The coupling comprises a female and a male coupling part. The female coupling part comprises: a tubular receiving part, the wall of which an opening is provided; a ball which is placed in the opening and which is movable in radial direction of the receiving part; and a locking sleeve which is screwed onto and encloses the receiving part and which by being screwed is movable in the longitudinal direction of the receiving part between an opened position, in which the locking sleeve allows movement of the ball in the opening for the purpose of placing/removing the male coupling part into/from the receiving part, and a closed position in which the locking sleeve locks the male coupling part in the female coupling part with the ball, wherein the male coupling part is an elongate pin which comprises in its outer wall a groove for the ball.

This fastener assembly includes a body, an elongated member and a split wedge. The body defines a cavity that converges. An access opening at a small end provides access to the cavity. The member has a circumferential external profile at one end. The split wedge has two or more wedge segments with a flexible hinge connecting each of the wedge segments. Each of the wedge segments has an internal profile. The member is inserted through the access opening into the cavity of the body, the wedge segments of the split wedge are positioned circumferentially around the member and then the split wedge is wedged in the cavity to maintain the external profile of the member engaged with the internal profile of the wedge segments of the split wedge.

The present patent discloses a backboard fastener, comprising a male buckle and a female buckle; the male buckle and the female buckle are fitted to each other; a plurality of barbs are provided at one end of the male buckle, while a pressing face is provided at the other end thereof; and, a plurality of externally circular barbs are provided on the female buckle, an enlarged opening is provided at one end of the female buckle, and bumps corresponding to the barbs are provided inside the female buckle. The present patent has a simple structure, solves the problem of nail or screw rusting, does not need any mounting tool, and has a plurality of barbs so that falling-off is prevented. The present patent is suitable for components of various thicknesses and various occasions.

The present patent discloses a backboard fastener, comprising a male buckle and a female buckle; the male buckle and the female buckle are fitted to each other; a plurality of barbs are provided at one end of the male buckle, while a pressing face is provided at the other end thereof; and, a plurality of externally circular barbs are provided on the female buckle, an enlarged opening is provided at one end of the female buckle, and bumps corresponding to the barbs are provided inside the female buckle. The present patent has a simple structure, solves the problem of nail or screw rusting, does not need any mounting tool, and has a plurality of barbs so that falling-off is prevented. The present patent is suitable for components of various thicknesses and various occasions.

An LED display screen lock includes a handle, a lock seat and a lock core. The lock seat includes a base, a through hole and a pin slidably disposed on the base. The lock core is rotatably disposed on the handle and received in the through hole. A locking hole is formed on the lock core and the pin is inserted in the locking hole. An unlocking portion is disposed on a circumference of the handle. The unlocking portion is abutted against the pin, in order to drive the pin to exit the locking hole.

A fixing system for a rocker arm of a vehicle suspension has a threaded rod having a first thread, a second thread and a locking cavity. The fixing system has a first cam, integral for rotation with the threaded rod by shape-fitting coupling, a second cam integral for rotation with the threaded rod by shape-fitting coupling, a first nut, screwed onto the first thread to lock position of the first cam, and a second nut, screwed onto the second thread to lock position of the second cam and having a locking portion having a circumferential groove and a positioning hole passing through the circumferential groove. An elastic clip shaped as an open ring is accommodated in the circumferential groove for retaining a pin in the positioning hole. In a screwed position of the second nut, the pin fits into the locking cavity and locks the position of the second nut.

A fastener system for securing a component to a structure is provided. The system includes a pin portion and a clip portion. The pin portion has a head and a shaft. The clip portion has a head engagement flange and a retainer flange configured to receive a fastener that extends along a first axis. The clip portion and the pin portion are configured for engagement with one another in an engaged position, and in the engaged position the pin portion shaft extends along a second axis non-parallel to the first axis.

A fastener system for securing a component to a structure is provided. The system includes a pin portion and a clip portion. The pin portion has a head and a shaft. The clip portion has a head engagement flange and a retainer flange configured to receive a fastener that extends along a first axis. The clip portion and the pin portion are configured for engagement with one another in an engaged position, and in the engaged position the pin portion shaft extends along a second axis non-parallel to the first axis.

A constant velocity universal joint includes outer and inner joint members configured to transmit torque therebetween through intermediation of balls while allowing angular displacement. A power transmission shaft is coupled to the inner joint member. A mounting and dismounting mechanism configured to mount and dismount the power transmission shaft to and from the inner joint member is provided between the inner joint member and the power transmission shaft. The mounting and dismounting mechanism includes a tubular member inserted externally on the power transmission shaft so as to extend from the inner joint member, a fixing member received in the tubular member, and an annular member arranged on an outer periphery of the tubular member. The fixing member is moved in the radial direction along with movement of the annular member in the axial direction so that the fixing member is mountable to and dismountable from the power transmission shaft.

A system and method are provided for coupling a hub to a main shaft of a wind turbine. Accordingly, a plurality of fasteners are arranged within corresponding through holes of the hub of a wind turbine. At least one circumferential ridge segment is arranged radially adjacent to the head sections of the plurality of fasteners so as to resist a torque applied to each of the plurality of fasteners. A connection mechanism is utilized to secure the plurality of fasteners within the plurality of through holes so as to limit an axial translation of the plurality of fasteners prior to the coupling of the hub to the main shaft.