[미국특허]
Passive anti-theft device for vehicle ignition lock
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E05B-015/16
E05B-063/00
출원번호
US-0502668
(1983-06-09)
발명자
/ 주소
Zagoroff, Dimiter S.
인용정보
피인용 횟수 :
10인용 특허 :
8
초록▼
An improved protective device for an ignition lock cylinder of a motorized vehicle comprising an armored cap arranged axially with and covering the cylinder end, the cylinder and cap adapted for mutual rotation about the cylinder axis to activate the ignition when a mating key is inserted through th
An improved protective device for an ignition lock cylinder of a motorized vehicle comprising an armored cap arranged axially with and covering the cylinder end, the cylinder and cap adapted for mutual rotation about the cylinder axis to activate the ignition when a mating key is inserted through the cap to unlock the cylinder, the cap adapted to be rotated by hand to rotate the cylinder. The improvement comprises a torque-sensitive coupling adapted to be disposed in coupling relationship between the lock cylinder and cap. The coupling is constructed and arranged to transmit torque applied to the cap cylinder of a value below a predetermined maximum value selected to exceed normal torque applied to an unlocked cylinder by hand action of a vehicle operator. The maximum torque value is less than that needed to force rotation of the cylinder when the cylinder is still locked. The coupling is also adapted to disengage between the cap and cylinder when torque above the predetermined maximum value is applied. Whereby the cap and cylinder are positively related to prevent independent rotation of either during normal operation, e.g. to avoid damage to a key that has been only partially inserted into said cylinder, the cap being free to turn in uncoupled relationship with the cylinder when abnormal torque is applied to the cap, thereby to prevent rotation of the cylinder by force of a car thief. In another aspect, a device for aligning the cap and cylinder coaxially is provided, e.g. where a protective coupling is also employed.
대표청구항▼
1. In a protective device for an ignition lock system of a motorized vehicle of the type in which an ignition lock housing extends about a steering column, and an ignition lock cylinder is at one side of the housing, said protective device comprising an armored cap arranged axially with and cover
1. In a protective device for an ignition lock system of a motorized vehicle of the type in which an ignition lock housing extends about a steering column, and an ignition lock cylinder is at one side of the housing, said protective device comprising an armored cap arranged axially with and covering the end of said cylinder, and means providing a bearing surface for said cap, said cylinder and cap adapted for mutual rotation about the axis of the cylinder to activate the vehicle ignition when a mating key is fully inserted through said cap into said cylinder, said cap adapted to be rotated by hand to rotate said cylinder, and a protective cowl comprising at least two opposed shield elements constructed and arranged to be fixedly disposed about the ignition lock housing and, when assembled, sized to closely surround the housing, said cowl sized and constructed to protect the ignition lock cylinder to prevent unauthorized access thereto by car thieves, The Improvement Wherein said protective cowl further comprises a conical protrusion extending about said housing and terminating in said rotatable cap bearing surface adjacent the end of said cylinder, and said protective device comprises a torque-sensitive coupling means adapted to be disposed in coupling relationship between said lock cylinder and said cap, said coupling means constructed and arranged to transmit torque applied to said cap to said lock cylinder where said torque is of a value below a predetermined maximum value selected to exceed normal torque applied to an unlocked cylinder by a hand action of a vehicle operator, said maximum torque value being less than that needed to force rotation of said cylinder when said cylinder is still locked, said coupling means being adapted to disengage between said cap and said cylinder when torque above said predetermined maximum value is applied to said cap, whereby said cap and said cylinder are positively related to prevent independent rotation of either during normal operation, e.g. to avoid damage to a key that has been only partially inserted into said cylinder, said cap being free to turn in uncoupled relationship with said cylinder when abnormal torque is applied to the cap, thereby to prevent rotation of the cylinder by force of a car thief. 2. The protective device of claim 1 wherein said coupling means is a sleeve member having a radially extending protuberance, and a surface of said cap defines a complementary protuberance, said corresponding protuberances being engaged to provide coupled rotation during normal operation, and during application of torque in excess of said predetermined maximum value the protuberances being adapted to disengage thereby to permit relative motion between said coupling and said cap. 3. The protective device of claim 2 wherein said coupling means is adapted to deform about said protuberance under torque exceeding said maximum value to disengage said coupling means from said cap. 4. The protective device of claim 1 wherein said conical protrusion is an integral portion of at least a part of said protective cowl disposed about said housing. 5. The protective device of claim 1 wherein said device further comprises alignment means for fixedly aligning and maintaining the coaxial relationship of said cylinder and said cap, said alignment means constructed and arranged to position said bearing surface in a coaxial relationship with said cylinder. 6. The protective device of claim 5 wherein said alignment means comprises at least one tab element extending axially from said sleeve member, and said lock cylinder defines a complementary aperture, the engagement of said tab element in said aperture providing a secure coaxial relationship of said coupling means and said cap with said lock cylinder. 7. In a protective device for an ignition lock system of a motorized vehicle of the type in which an ignition lock housing extends about a steering column, and an ignition lock cylinder is at one side of the housing, said protective device comprising an armored cap arranged axially with and covering the end of said cylinder, and means providing a bearing surface for said cap, said cylinder and cap adapted for mutual rotation about the axis of the cylinder to activate the vehicle ignition when a mating key is fully inserted through said cap into said cylinder, said cap adapted to be rotated by hand to rotate said cylinder, and a protective cowl comprising at least two opposed shield element constructed and arranged to be fixedly disposed about the ignition lock housing and, when assembled, sized to closely surround the housing, said cowl sized and constructed to protect the ignition lock cylinder to prevent unauthorized access thereto by car thieves, The Improvement Wherein said protective cowl further comprises a conical protrusion extending about said housing and terminating in said rotatable cap bearing surface adjacent the end of said cylinder, and said protective device comprises a torque-sensitive coupling means adapted to be disposed in coupling relationship between said lock cylinder and said cap, said coupling means comprising a member having a protuberance, a surface of said cap defining a complementary protuberance, and alignment means for fixedly aligning and maintaining the coaxial relationship of said cylinder and said cap, said alignment means comprising at least one tab element extending axially from said sleeve member, and said lock cylinder defining a complementary aperture, said coupling means constructed and arranged to transmit torque applied to said cap to said lock cylinder where said torque is of a value below a predetermined maximum value selected to exceed normal torque applied to an unlocked cylinder by a hand action of a vehicle operator, said maximum torque value being less than that needed to force rotation of said cylinder when said cylinder is still locked, said coupling means being adapted to disengage between said cap and said cylinder when torque above said predetermined maximum value is applied to said cap, whereby said cap and said cylinder are positively related to prevent independent rotation of either during normal operation, e.g. to avoid damage to a key that has been only partially inserted into said cylinder, said cap being free to turn in uncoupled relationship with said cylinder when abnormal torque is applied to the cap, thereby to prevent rotation of the cylinder by force of a car thief.
Haldric Bernard (Vendome FRX) Benedi Gregorio (Vendome FRX) Baudon ne Chardon Sylvie (Naveil FRX), Anti-rotation locking device including a torque limitation for a motor vehicle steering column.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.