Cordless Shade Apparatus with Adjustable Springs-Loaded Arrangement and Adjusting Method Thereof

A shade apparatus, comprising:

• a shade body;
• a bottom rail mounted on a bottom edge of said shade body;
• a headrail, mounted on a top edge of said shade body, having two side wall and a bottom wall defining a slide channel longitudinal extended therein;
• and
• a springs-loaded arrangement, housed in said headrail and configured to allow said bottom rail and said shade body to move up and down, comprising:
• a slide seat, comprising at least two spring chamber seats integrally arranged parallelly and two sliding guider sets provided at left and right sides thereof symmetrically, wherein each of said two spring chamber seats has two or more spring chambers, such that said spring chambers of said two spring chamber seats are aligned symmetrically and parallelly to form two or more pairs of said spring chambers, wherein each of said two or more pairs of said spring chambers a bottom opening which is closed by said bottom wall of said headrail when said slide seat is slidably disposed in said slide channel of said headrail with said bottom openings facing downwards,
• a spring base, mounted on one end portion of said slide channel in said headrail, having a pair of spring grooves parallelly provided in a bottom side thereof and facing said bottom wall of said headrail,
• a pair of guiding rails respectively protruded inwardly and extended longitudinal along said side walls of said headrail symmetrically, said pair of guiding rails slidably engaging with said two sliding guider set of said slide seat situated in said slide channel so as to allow and guide said slide seat to be sliding along said slide channel, and
• one or more pairs of coil springs, wherein one pair of said one or more pairs of said coil springs are situated one pair of said two or more pairs of said spring chambers and extension ends of said one pair of said one or more pairs of said coil springs are extended and secured to said spring base, such that when said bottom rail is pushed upwards said one or more pairs of said coil springs are tightened, said shade body and said bottom rail move towards said headrail, wherein when said bottom rail stops being pushed up, said springs-load arrangement automatically locks, holding said shade body and said bottom rail in a new, raised position thereof, wherein when said bottom rail is pulled down, said shade body is lowered as said bottom rail moves downward to release tensions in said one or more pairs of said coil springs, wherein said one or more pairs of said coil springs allow said shade body and said bottom rail to lower, while ensuring a release of tension of each of said one or more pair of said coil springs is gradually, allowing for a smooth lowering of said shade body and said bottom rail, wherein when said bottom rail stops being pulled down, said springs-loaded arrangement again locks into place, securing said shade body and said bottom rail at a desired height.