A buckle joint structure has a first body, a second body and a buckle module with a cross section of a C-shape. A first flange of the first body is fixed or buckled to a second flange of the second body via the buckle module with the cross section of the C-shape. When assembling, merely a sliding manner is required to make the first flange of the first body and the second flange of the second body buckled to the buckle module. When detaching, merely a sliding manner is required to withdraw the buckle module away from the first body and the second body. Thus, the buckle joint structure is easily assembled or detached without an extra tool or help of another person.

A buckle joint structure has a first body, a second body and a buckle module with a cross section of a C-shape. A first flange of the first body is fixed or buckled to a second flange of the second body via the buckle module with the cross section of the C-shape. When assembling, merely a sliding manner is required to make the first flange of the first body and the second flange of the second body buckled to the buckle module. When detaching, merely a sliding manner is required to withdraw the buckle module away from the first body and the second body. Thus, the buckle joint structure is easily assembled or detached without an extra tool or help of another person.

Connectors for coupling fall arresting devices to a safety harness. The connectors may include a first pin configured to lock into a first side of a base portion using one or more locking mechanisms. The first pin may be used to engage with one or more fall arresting devices to attach the one or more fall arresting devices to the connector. In some such examples, the locking mechanisms may be positioned within interior portions of the first side of the connector so as to allow the one or more fall arresting devices to pivot freely about the ends of the connector. In some examples, the connectors may include a second pin configured to lock into a second side of the base portion using one or more locking mechanisms. The second pin may be used to conveniently and releasably attached the connector to a safety harness of a worker.

An end effector includes a body having a cavity located therein. The body partially encloses the cavity and includes an opening through the body to the cavity that is sized to receive a hanger hook. A hooking structure is located within the cavity. A latch is movably received by the body. The latch has a closed position that reduces the size of the opening and an open position that increases the size of the opening.

An end effector includes a body having a cavity located therein. The body partially encloses the cavity and includes an opening through the body to the cavity that is sized to receive a hanger hook. A hooking structure is located within the cavity. A latch is movably received by the body. The latch has a closed position that reduces the size of the opening and an open position that increases the size of the opening.

A speaker fast mounting assembly and a method of use. The loudspeaker fast mounting assembly includes: a pressing edge; a locking and releasing assembly comprising a fixed support and a sliding and limiting piece, the fixed bracket is provided on the sliding and limiting piece of the locking position and the release position, the locking position and the release position is arranged between the channel, the sliding and limiting piece sliding fit in the channel; the pressing block, the pressing block is connected to the slide and on the limiting piece, the briquetting of the press with the pressure-side member of the fixture; the elastic member, the elastic member so that the block and the pressure-side member to maintain the pressing state; the unlocking member used for the sliding and limiting piece are balanced in order to make the sliding and limiting piece from the self-locking position.

A speaker fast mounting assembly and a method of use. The loudspeaker fast mounting assembly includes: a pressing edge; a locking and releasing assembly comprising a fixed support and a sliding and limiting piece, the fixed bracket is provided on the sliding and limiting piece of the locking position and the release position, the locking position and the release position is arranged between the channel, the sliding and limiting piece sliding fit in the channel; the pressing block, the pressing block is connected to the slide and on the limiting piece, the briquetting of the press with the pressure-side member of the fixture; the elastic member, the elastic member so that the block and the pressure-side member to maintain the pressing state; the unlocking member used for the sliding and limiting piece are balanced in order to make the sliding and limiting piece from the self-locking position.

A snap hook with spring may include a main body having a first generally curved shape section and a second generally straight shape section. The generally curved section may include a hole, and the generally straight section may include a cavity. The snap hook with spring may also include a sliding pin and a spring acting on said sliding pin. The snap hook with spring may also be characterized in that a slide formed in the main body may have various geometrical shapes leading to a path, where the path includes sections that may be linear, rotational, curved, angular, or any combination thereof. The sliding pin may include a lever that runs the path of the slide and the path of the slide determines the type of movement of the sliding pin, in such a way that the path of the slide is never limited to a single direction.

A snap hook with spring may include a main body having a first generally curved shape section and a second generally straight shape section. The generally curved section may include a hole, and the generally straight section may include a cavity. The snap hook with spring may also include a sliding pin and a spring acting on said sliding pin. The snap hook with spring may also be characterized in that a slide formed in the main body may have various geometrical shapes leading to a path, where the path includes sections that may be linear, rotational, curved, angular, or any combination thereof. The sliding pin may include a lever that runs the path of the slide and the path of the slide determines the type of movement of the sliding pin, in such a way that the path of the slide is never limited to a single direction.

A hook in conjunction with an element to be inserted into the hook interior has an opening, via which opening the element can be inserted into the hook interior, wherein a hook partial region adjoining the opening includes an adhesion element having an adhesion surface directed toward the element and/or the element includes an adhesion element having an adhesion surface directed toward the hook partial region adjoining the opening.