Threshold-free door panels and door components

Abstract

This invention relates to a door leaf and door assembly. The door leaf includes a main body, a handle, a top block, and a transmission assembly. The main body selectively covers the entrance / exit and selectively embeds itself downward into the door frame or rests against the building's floor. The top block is vertically movable within the main body and can move downward relative to the main body, protruding from its bottom. When the handle is turned or moved in an opening direction, the handle, through the transmission assembly, drives the top block downward to abut against the door frame or floor, thereby causing the main body to move upward relative to the door frame or floor and creating an actuating gap. Thus, even without a threshold, the door leaf can be embedded in the bottom frame or rest against the floor to maintain good sealing and prevent water seepage or dust intrusion, while still facilitating the passage of wheelchairs, shopping carts, and other wheeled devices, improving the building's accessibility.

Claims

1. A door leaf for connecting to a door frame of an entrance to a building, the door leaf comprising: a body for covering the entrance and for being recessed downward into a bottom frame of the door frame or abutting downward against the floor of the building; a handle rotatably or movablely disposed on the body; a top block movably disposed vertically on the body and protruding downward relative to the body from the bottom of the body; a transmission assembly connecting the handle and the top block, and converting rotation or movement of the handle into vertical movement of the top block; wherein, When the handle is not rotated or moved, the main body is embedded downward into the base frame or against the ground of the building; wherein, when the handle is rotated or moved in a door opening direction, the transmission component drives the top block to move downward relative to the main body and abut against the base frame or the ground of the building, thereby causing the main body to move upward relative to the base frame or the ground and create an actuation gap with the base frame or the ground.

2. The door leaf as claimed in claim 1, wherein the top block has a force-bearing ramp; the transmission assembly has a drive member; when the handle is manually rotated or moved in the opening direction, the drive member pushes against the force-bearing ramp of the top block to drive the top block downward against the bottom frame or the ground.

3. The door leaf as claimed in claim 1, wherein the body has a body thread; the top block is rotatable relative to the body and has a top block thread that engages with the body thread of the body to convert the rotation of the top block relative to the body into up-and-down movement of the top block relative to the body; the transmission assembly has a drive member connected to the top block; when the handle is manually turned or moved in the opening direction, the drive member drives the top block to rotate, thereby causing the top block to press down against the bottom frame or the ground.

4. A door leaf as described in any one of claims 1 to 3, wherein the main body can cover the entrance / exit by rotating relative to the building; the top block is adjacent to or located on the pivot axis between the main body and the building.

5. The door leaf as claimed in claim 2 or 3, wherein the handle is rotatably disposed on the body; the transmission assembly has a gear disposed on a pivot of the handle; and a rack movably disposed on the body and meshing with the gear.

6. The door leaf as claimed in claim 5, wherein the rack is movable along a first direction; the drive member is movable along a second direction other than the first direction; the transmission assembly has a corner gear having a fixed portion disposed on the body; a first end movably connected to the fixed portion along the first direction; a second end movably connected to the fixed portion along the second direction; when the first end is moved toward the first direction, the second end is driven by the first end to move toward the second direction; the rack and the drive member are respectively connected to the first end and the second end of the corner gear.

7. The door leaf as described in any one of claims 1 to 3, further comprising a seal located at the bottom of the body and clampable between the body and the bottom frame or the ground to seal the entrance / exit.

8. A door assembly for installation at an entrance of a building, the door assembly comprising: a door frame for installation at the entrance and having a bottom frame for embedding in the ground of the entrance and not protruding from the ground; a door leaf connected to the door frame and comprising: a body connected to the door frame and for covering the entrance and recessable into the bottom frame; a handle rotatably or movably disposed on the body; a top block movably disposed on the body; and a transmission assembly connecting the handle and the top block, and converting rotation or movement of the handle into vertical movement of the top block; wherein... When the handle is not rotated or moved, the main body is embedded downward into the bottom frame; wherein, when the handle is manually rotated or moved in a door opening direction, the transmission component drives the top block to move downward relative to the main body and abut against the bottom frame, thereby causing the main body to move upward relative to the bottom frame to disengage from the bottom frame and create an actuation gap with the bottom frame.

9. The door assembly as claimed in claim 8, further comprising a seal disposed at the bottom of the body of the bottom frame or the door leaf; the seal being clamped between the body and the bottom frame to seal the entrance / exit when the body is inserted downward into the bottom frame.

10. A door assembly for installation at an entrance of a building, the door assembly comprising: a door frame for installation at the entrance; a door leaf connected to the door frame, and comprising: a body connected to the door frame and for covering the entrance and resting against the floor of the building; a handle rotatably or movablely disposed on the body; a top block vertically movable on the body; and a transmission assembly connecting the handle and the top block, and converting rotation or movement of the handle into vertical movement of the top block; wherein... When the handle is not turned or moved, the main body rests against the ground of the building; wherein, when the handle is manually turned or moved in a door-opening direction, the transmission component drives the top block to move downward relative to the main body and abut against the ground of the building, thereby causing the main body to move upward relative to the ground to detach from the ground and create an actuation gap with the ground.

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