Glass Door Patch Fitting Loaded Hinges Accessories Floor Spring-DDFS001

A floor spring is also a hydraulic door closer, except that the device that holds the spring down is a worm gear rather than a rack and pinion. Because the worm gear can be rotated in the forward and reverse directions, the floor spring can be used for doors that open in both directions, whereas a door closer can only be used for doors that open in one direction. The technical key to the floor spring is the load-bearing seat in the lower part of the spindle, which determines the load-bearing level of the floor spring.

Because a floor spring for a bi-directional door opening has to carry the weight of the door body, the weight of the door body plays a decisive role in the choice of the floor spring in comparison with a door closer. Door width and wind pressure are also very important for the selection of the type of floor spring. From the production point of view, the worm-gear structure of the floor spring makes the compression of the spring smaller than that of the rack-and-pinion-driven door closer, and the force arm of the floor spring to close the door is also shorter, so the quality of the floor spring is more dependent on the structural design and processing accuracy. In addition, because the door of the two-way door opening along the door plane has a large force on the floor spring, so the service life of the low-grade floor spring and high-grade floor spring will be a big gap.