Lift-type door cover closing and locking device

Abstract

This invention provides a hinged door closing and locking device, comprising a door assembly, a linkage mechanism, and a locking mechanism. The door assembly has a pivotable cover; the linkage mechanism includes a swing arm fixed to the door assembly and pivotable with the cover, a linkage arm pivotally connected to the swing arm, and a slider pivotally connected to the linkage arm and movable along a guide rail; the locking mechanism includes a switch and an actuator connected to the slider and engaging with the switch. This invention uses a linkage mechanism to connect the locking mechanism and the door assembly, and uses the locking mechanism to lock the operation of the linkage mechanism, providing a hinged door closing and locking device that enhances operator safety.

Claims

1. A hinged door closing and locking device, comprising: a door assembly including a cover body pivotally oriented relative to a frame; a linkage mechanism including a swing arm, a connecting arm, a guide rail and a slider; the swing arm being fixed to the door assembly and pivotally oriented with the cover body, the connecting arm being pivotally coupled to the swing arm; the slider being movable along the guide rail and pivotally coupled to the connecting arm; and a locking mechanism including a switch and an actuator, the actuator being coupled to the slider and engaging with the switch.

2. The hinged door closing and locking device as claimed in claim 1, wherein the door assembly includes a pivot; the pivot is configured to engage with and be rotatable relative to the frame; the cover is fixed to the pivot; the swing arm includes two opposing ends, one end of the swing arm being fixed to the pivot of the door assembly.

3. The hinged door closing and locking device as described in claim 2, wherein the swing arm includes a connecting sleeve and a stop member; the connecting sleeve is disposed at one end of the swing arm and fitted onto the pivot; the stop member passes through the connecting sleeve and abuts against the pivot, thereby fixing the swing arm to the pivot of the door assembly.

4. The hinged door closing and locking device as described in claim 3, wherein the door assembly includes two rotating arms; the cover includes two opposite sides; the two rotating arms are respectively located on the two sides of the cover, each rotating arm includes two opposite ends; one end of each rotating arm is fixed to the cover, and the other end of the rotating arm is fixed to the pivot, so that the cover is fixed to the pivot and can pivot relative to the frame as the pivot rotates.

5. The hinged door closing and locking device as described in claim 4, wherein the door assembly includes a torsion spring; the torsion spring is sleeved on the pivot and includes two opposing ends, one end of the torsion spring being fixed to the frame and the other end of the torsion spring being fixed to the pivot.

6. The hinged door closing and locking device as described in claim 5, wherein the guide rail is provided with a pair of guide rail rods that extend longitudinally in a straight line, and the slider is slidably disposed between the pair of guide rail rods.

7. The hinged door closing and locking device as described in any one of claims 1 to 6, wherein the linkage mechanism includes a mounting base fixed to the top of the slider; the actuator is fixed to the mounting base and engaged with the slider via the mounting base.

8. The hinged door closing locking device as claimed in claim 7, wherein the locking mechanism includes a clamping plate; the actuator is screwed onto the clamping plate by passing through the actuator and the mounting base with at least one bolt.

9. The hinged door closing and locking device as described in claim 7, wherein the mounting base is a plate with an L-shaped cross-section.

10. The hinged door closing locking device as claimed in claim 7, wherein the mounting base is provided with two elongated holes, and the mounting base is screwed into the slider by two bolts passing through the two elongated holes respectively.

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