Fire door lock mechanism
First Claim
1. A fire door lock mechanism, comprising:
- a body mounted on a fire door and formed with a handlebar and a drive mechanism operationally associated with the handlebar, for allowing a user to depress the handlebar to disengage the fire door lock mechanism, wherein the body comprises a lock shell for accommodating components of the drive mechanism, a bottom of the lock shell being coupled to a mount plate and a base plate having two ends;
a handlebar mount having a recess for receiving the base plate;
a pair of first horseshoe elements, connected to opposite ends of the base plate;
a pair of second horseshoe elements, connected to opposite ends of a bottom of the handlebar;
a pair of actuators, each bent to form a central portion and two end portions, wherein one of the end portions of each actuator is connected to a respective one of the second horseshoe elements, and the central portion of each actuator is connected to a respective first horseshoe element, such that the actuators receive a force from the handlebar via the second horseshoe elements to rotate the actuators;
a push rod coupled to the other end portion of the actuators;
a glide mount coupled to one end of the push rod to receive motion from the push rod; and
a lock bolt coupled to the glide mount to receive motion from the glide mount.
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Accused Products
Abstract
A fire door lock mechanism is provided. A handlebar is coupled to one end of an actuator whose the other end is connected with a push rod. A lock bolt is rotatably mounted in a lock cover mount which accommodates a glide mount used to drive the push rod to move horizontally. When the actuator receives a depression force from the handlebar, the actuator is driven to rotate and induces the push rod to move horizontally. By the movement from the push rod, the lock bolt is driven to rotate to engage or disengage the lock mechanism. A partition and a fire piece are coupled to the glide mount. The fire piece melts at a high temperature during a fire, making the partition moved by a force from an elastic member connected thereto and cause the lock bolt to be engaged with the partition and maintained in a locked state.
74 Citations
19 Claims
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1. A fire door lock mechanism, comprising:
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a body mounted on a fire door and formed with a handlebar and a drive mechanism operationally associated with the handlebar, for allowing a user to depress the handlebar to disengage the fire door lock mechanism, wherein the body comprises a lock shell for accommodating components of the drive mechanism, a bottom of the lock shell being coupled to a mount plate and a base plate having two ends;
a handlebar mount having a recess for receiving the base plate;
a pair of first horseshoe elements, connected to opposite ends of the base plate;
a pair of second horseshoe elements, connected to opposite ends of a bottom of the handlebar;
a pair of actuators, each bent to form a central portion and two end portions, wherein one of the end portions of each actuator is connected to a respective one of the second horseshoe elements, and the central portion of each actuator is connected to a respective first horseshoe element, such that the actuators receive a force from the handlebar via the second horseshoe elements to rotate the actuators;
a push rod coupled to the other end portion of the actuators;
a glide mount coupled to one end of the push rod to receive motion from the push rod; and
a lock bolt coupled to the glide mount to receive motion from the glide mount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification