Door closer with buffer mechanism for a sliding door
OwnerPatrick TSAIinventor
Life of this patent
Estimating the term…
Abstract
A door closer for a top hung sliding door has a buffer mechanism and a trolley hanger. The buffer mechanism includes a stationary base, a sliding block, a hook, two buffers and two resilient members. The sliding block is slidably mounted on the stationary base. The hook is pivotally mounted on the sliding block. The buffers are mounted on the stationary base and each buffer has a piston rod secured to the sliding block. The resilient members are mounted on the stationary base and each resilient member has one end secured to the sliding block. The trolley hanger has at least one engaging recess selectively engaging the hook. Therefore, the buffers can provide a buffering force and the resilient members can release a resilient force to reduce a moving speed of a door panel.
Claims20
A door closer for a top hung sliding door comprising:
- a buffer mechanism including
- a stationary base having
- a front portion being a guide rail having a locking hole;
- and
- a rear portion being a mounting seat;
- a sliding block slidably mounted on the stationary base and having
- a guide channel for receiving the guide rail of the stationary base;
- and
- an inserting recess having an open bottom;
- a hook pivotally mounted on the sliding block and having
- two side surfaces;
- a hooked portion;
- and
- two locking protrusions respectively protruding from the side surfaces of the hook adjacent to the hooked portion and being able to engage the locking hole of the stationary base;
- two buffers mounted on the mounting seat of the stationary base and each buffer having
- a cylinder barrel secured in the mounting seat of the stationary base;
- and
- a piston rod retractably mounted and held in the cylinder barrel and having a free end inserted into the inserting recess of the sliding block, an insert unit securely inserted into the inserting recess of the sliding block from the open bottom of the inserting recess and having a locking slot engaging the free ends of the piston rods to secure the piston rods to the sliding block;
- and
- two resilient members mounted on the mounting seat of the stationary base and each resilient member having two ends, one end of each resilient member secured to the stationary base and the other end of each resilient member secured to the sliding block;
- and
- a trolley hanger including
- a sliding base;
- and
- a trolley detachably mounted to the sliding base and having
- a roller seat having
- a top surface;
- two side surfaces;
- and
- at least one engaging recess formed in the top surface of the roller seat and selectively engaging the hooked portion of the hook;
- and
- multiple rollers rotatably mounted on the side surfaces of the roller seat.
Dependencies are inferred from the claim text.