A lock module comprising a housing, a lock pawl, and an actuator. The lock pawl may be moveable between an extended position and a retracted position, wherein the lock pawl extends from the housing by a greater distance in the extended position than in the retracted position. The actuator may be configured to selectively couple to the lock pawl, the lock module being in a locked configuration when the actuator is coupled to the lock pawl. The lock pawl may be configured to move in a first direction as a closure moves from a first position to a second position and the lock pawl may be configured to move in a second direction as the closure moves from the second position to the first position. The first direction may be opposite the second direction. The lock pawl may be configured to block movement of the closure when the lock module is in the locked configuration.

A lock module comprising a housing, a lock pawl, and an actuator. The lock pawl may be moveable between an extended position and a retracted position, wherein the lock pawl extends from the housing by a greater distance in the extended position than in the retracted position. The actuator may be configured to selectively couple to the lock pawl, the lock module being in a locked configuration when the actuator is coupled to the lock pawl. The lock pawl may be configured to move in a first direction as a closure moves from a first position to a second position and the lock pawl may be configured to move in a second direction as the closure moves from the second position to the first position. The first direction may be opposite the second direction. The lock pawl may be configured to block movement of the closure when the lock module is in the locked configuration.

A lock slat for a rolling shutter comprises a housing having opposite first and second sides. A housing channel is formed between the first and second sides. A cam is coupled to the housing, and is moveable between a locked position to secure the rolling shutter, and an unlocked position. A cam slat is slidably received in the housing channel, and is coupled to the cam. The movement of the cam slat in the housing channel moves the cam between the locked and unlocked positions.

A lock slat for a rolling shutter comprises a housing having opposite first and second sides. A housing channel is formed between the first and second sides. A cam is coupled to the housing, and is moveable between a locked position to secure the rolling shutter, and an unlocked position. A cam slat is slidably received in the housing channel, and is coupled to the cam. The movement of the cam slat in the housing channel moves the cam between the locked and unlocked positions.

In one embodiment, a guide system includes a first member configured to be fixed to a structure. A coupling element is fixed to the first member. A second member is moveable relative to the first member. The second member is configured to receive the coupling element to couple the first member to the second member. There is a channel between the first member and the second member when the first member is coupled to the second member. The channel is configured to receive a portion of a closure.

In one embodiment, a closure system comprises a guide assembly having a channel defined by a first guide wall and a second guide wall. The closure system may include a retention bar extending into the channel from the first guide wall and a plurality of slats. Each slat of the plurality of slats may be configured to interlock with another of the plurality of slats. Each slat may have a retention groove with at least one sidewall configured and dimensioned to engage the retention bar to retain the slat within the channel.

In one embodiment, a closure system comprises a guide assembly having a channel defined by a first guide wall and a second guide wall. The closure system may include a retention bar extending into the channel from the first guide wall and a plurality of slats. Each slat of the plurality of slats may be configured to interlock with another of the plurality of slats. Each slat may have a retention groove with at least one sidewall configured and dimensioned to engage the retention bar to retain the slat within the channel.

Provided is a locking head apparatus of a dual automatic locking protective door bar. The locking head apparatus includes a housing, a first toggling button, a second toggling button, a sliding seat, a fixation seat, a linkage locking mechanism and a rotating mechanism. A hydraulic rod is mounted inside the fixation seat, and the hydraulic rod is connected to the sliding seat. The second toggling button is exposed on the housing and connected with a toggling button seat. The toggling button seat is mounted inside the housing through a first spring, thereby forming an automatic resetting mechanism. With the adoption of the locking head apparatus, the dual automatic locking may be realized, the dual protection is achieved, and a child is prevented from opening the door bar after learning the unlocking skill.

Provided is a locking head apparatus of a dual automatic locking protective door bar. The locking head apparatus includes a housing, a first toggling button, a second toggling button, a sliding seat, a fixation seat, a linkage locking mechanism and a rotating mechanism. A hydraulic rod is mounted inside the fixation seat, and the hydraulic rod is connected to the sliding seat. The second toggling button is exposed on the housing and connected with a toggling button seat. The toggling button seat is mounted inside the housing through a first spring, thereby forming an automatic resetting mechanism. With the adoption of the locking head apparatus, the dual automatic locking may be realized, the dual protection is achieved, and a child is prevented from opening the door bar after learning the unlocking skill.