The prevent invention provides a zipper head assembly structure and a slidable element thereof. The sliding element has a base portion, two lateral wall portions, and a seat portion. The base portion has a front side and a back side. The two lateral wall portions are respectively upwardly extended from two opposite lateral sides of the base portion, and the two lateral wall portions correspond to each other and are connected to the front side of the base portion. The seat portion is disposed on the base portion and connected to the back side of the base portion. The seat portion has a main body disposed on the base portion and connected to the back side of the base portion, two strip convex ribs respectively disposed on two opposite sides of the main body, and two concave spaces respectively connected to the two strip convex ribs.

The prevent invention provides a zipper head assembly structure and a slidable element thereof. The sliding element has a base portion, two lateral wall portions, and a seat portion. The base portion has a front side and a back side. The two lateral wall portions are respectively upwardly extended from two opposite lateral sides of the base portion, and the two lateral wall portions correspond to each other and are connected to the front side of the base portion. The seat portion is disposed on the base portion and connected to the back side of the base portion. The seat portion has a main body disposed on the base portion and connected to the back side of the base portion, two strip convex ribs respectively disposed on two opposite sides of the main body, and two concave spaces respectively connected to the two strip convex ribs.

There is provided a wall port cover to be installed in building wall ports. Wall ports are simply openings in a wall or ceiling of a building which may be used to house electrical panels, HVAC systems, access panels, lighting switches, and the like. The wall port cover comprises an engagement means which is rotatable between an engaging position and a releasing position. In the engaging position, the engaging means extend beyond the wall port cover to engage a top surface of the wall or ceiling drywall panel to support and retain the wall port cover within the vent opening. In the releasing position, the engaging means are retracted within the wall port cover to disengage from the top surface of the wall or ceiling drywall panel to allow the wall port cover to be removed from the vent openings.

There is provided a wall port cover to be installed in building wall ports. Wall ports are simply openings in a wall or ceiling of a building which may be used to house electrical panels, HVAC systems, access panels, lighting switches, and the like. The wall port cover comprises an engagement means which is rotatable between an engaging position and a releasing position. In the engaging position, the engaging means extend beyond the wall port cover to engage a top surface of the wall or ceiling drywall panel to support and retain the wall port cover within the vent opening. In the releasing position, the engaging means are retracted within the wall port cover to disengage from the top surface of the wall or ceiling drywall panel to allow the wall port cover to be removed from the vent openings.

A latching mechanism includes a body having a trip-latch with a protruding portion that protrudes from the body, a release button coupled to a release shaft disposed inside the body, and a holding edge disposed on the release shaft. The holding edge engages the trip-latch to maintain the release button in a depressed position. The holding edge disengages the trip-latch to place the release button in a non-depressed position in response to urging the protruding portion of the trip latch toward the rotatable body. The latching mechanism may also include a spring coupled to the release shaft that urges the release button to a non-depressed position. The latching mechanism may also include a spring coupled to the protruding portion of the trip-latch that urges the trip-latch to protrude from the body. A non-protruding portion of the trip-latch may engage the holding edge.

A latching mechanism includes a body having a trip-latch with a protruding portion that protrudes from the body, a release button coupled to a release shaft disposed inside the body, and a holding edge disposed on the release shaft. The holding edge engages the trip-latch to maintain the release button in a depressed position. The holding edge disengages the trip-latch to place the release button in a non-depressed position in response to urging the protruding portion of the trip latch toward the rotatable body. The latching mechanism may also include a spring coupled to the release shaft that urges the release button to a non-depressed position. The latching mechanism may also include a spring coupled to the protruding portion of the trip-latch that urges the trip-latch to protrude from the body. A non-protruding portion of the trip-latch may engage the holding edge.

A device mounting system includes a device bracket coupled to a device, and a support surface mount coupled to the device bracket. The support surface mount includes a base member mounted to a support surface, a securing member extending from the base member, and a securing latch that is included in the securing member and that moves between a secured orientation in which it engages the device bracket to secure the device bracket to the support surface mount, and an unsecured orientation that allows the device bracket to be decoupled from the support surface mount. A release member in the securing member may be actuated to move the securing latch between the secured and unsecured orientations. A locking element in the securing member may be actuated to prevent movement of the securing latch from the secured to the unsecured orientation to lock the device bracket to the support surface mount.

An assembled-type fastener unit includes a base, a handling member movably fitted in the base, and a locking device movably received in the handling member. The handling member can be operated for the locking device to extend out of the base to form a locked state or for the locking device to retract into the base to form an unlocked state. To use the fastener unit, the base is firstly connected to an object. Then, the handling member is operated for the locking device to extend out of the base and lock to a target object to form the locked state; or the handling member can be operated for the locking device to retract into the base to separate from a target object and form the unlocked state. Thus, at least two objects can be repeatedly and quickly connected to or disconnected from one another using the fastener unit.

An actuating mechanism includes a target, a smasher, an elastic component, and a blocker. The smasher is movably disposed at a side of the target. The elastic component is configured to provide an elastic force to drive the smasher to move toward the target. The blocker is movably disposed corresponding to the smasher. When the blocker contacts the smasher, the blocker clamps the smasher. When the blocker is moved to a position where the clamping to the smasher is released, the smasher is driven by the elastic force to move toward and smash the target. An electronic device is also provided.

An actuating mechanism includes a target, a smasher, an elastic component, and a blocker. The smasher is movably disposed at a side of the target. The elastic component is configured to provide an elastic force to drive the smasher to move toward the target. The blocker is movably disposed corresponding to the smasher. When the blocker contacts the smasher, the blocker clamps the smasher. When the blocker is moved to a position where the clamping to the smasher is released, the smasher is driven by the elastic force to move toward and smash the target. An electronic device is also provided.