Patent ID: 8650799
Filing Date: 2014-02-18
Classification: B60Q,E05F,E05Y

Abstract:
1. A vehicle door opening warning system, comprising a car door-opening control unit installed in a car door that is hinged to a car door frame of a car, wherein a linkage of the car extends out from the car door frame of said car, wherein said linkage is movable with respect to said car door in response to one of an opening and a closing of said car door, a first normally closed contact switch mounted in said car door frame and a normally opened contact switch mounted in said car door frame, an approaching object sensor mounted in said car door, at least one warning light mounted in said car door, a buzzer, a relay, a battery, and a controller, said car door-opening control unit comprising a holder frame having a through hole, said linkage passing through said through hole, a solenoid mounted inside said holder frame and operable to move a reciprocating rod thereof toward said linkage and away from said linkage, a stop bar pivotally mounted to said holder frame and having a free end thereof supported by said reciprocating rod and said free end movable with said reciprocating rod to one of a first position where the free end of said stop bar engages one of a first stop portion of said linkage to prohibit said car door from being opened and a second stop portion of said linkage to prohibit said car door from being opened, and a second position where the free end of said stop bar is spaced from said linkage allowing said car door to be opened, wherein when a person is opening said car door, a pressure of said car door applied to said first normally closed contact switch is released allowing power from said battery to be conducted to said controller to operate said sensor to start sensing and to operate said at least one warning light to give a visual warning; when said approaching object sensor senses an approaching object while said car door is opening, said approaching object sensor sends a signal to said controller causing said controller to drive said buzzer to give an audio warning signal and to switch on said relay to start said solenoid so that said solenoid moves said reciprocating rod to lift said stop bar toward said linkage to said first position where said stop bar engages said first stop portion of said linkage to prohibit said car door from being opened; after the approaching object has passed said approaching object sensor and said approaching object sensor senses no signal, said approaching object sensor stops sending said signal to said controller and said controller switches off said relay to cut the battery power to said solenoid causing said reciprocating rod to lower said stop bar away from said linkage to said second position allowing said car door to be opened; when said approaching object sensor senses another approaching object while said car door is opening, said sensor sends said signal to said controller causing said controller to switch on said relay to start said solenoid again causing said reciprocating rod to lift said stop bar toward said linkage to said first position to engage said second stop portion of said linkage.