Test fixture for vehicle door locks
First Claim
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1. A test fixture for a door lock mechanism having a lock cylinder with an opening comprising:
- an actuating piece of a size permitting insertion into the lock cylinder opening;
a reciprocating arm with the actuating piece at one end, said arm moving said actuating piece to insert the actuating piece into and remove it from said lock cylinder opening;
a rotary device connected to said arm, said rotary device causing said arm and attached actuating piece to move up and down while said actuating piece is in said lock cylinder opening, anda computer operatively connected with said reciprocating arm and rotary device, said computer controlling the movements of said rotary device to form an operating cycle in which the arm moves to insert the actuating piece into the lock cylinder opening, the rotary device is actuated to move the actuating piece up and down at least once while the actuating piece is in the lock cylinder opening, and the arm is moved to remove the actuating piece from the lock cylinder opening.
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Abstract
A fixture for testing a door lock mechanism activated by the lock cylinder of a vehicle door. The fixture has a frame mounted on the door by suction cups. A ram arm has an actuating piece that is to be inserted into and removed from the key opening of the lock cylinder and the ram arm is controllably moved during a test cycle to insert the actuating piece into the lock cylinder and hold it inserted while the piece is moved up and down in the lock cylinder to simulate forced entry. The test cycle can be carried out with different controlled amounts of force.
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Citations
19 Claims
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1. A test fixture for a door lock mechanism having a lock cylinder with an opening comprising:
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an actuating piece of a size permitting insertion into the lock cylinder opening; a reciprocating arm with the actuating piece at one end, said arm moving said actuating piece to insert the actuating piece into and remove it from said lock cylinder opening; a rotary device connected to said arm, said rotary device causing said arm and attached actuating piece to move up and down while said actuating piece is in said lock cylinder opening, and a computer operatively connected with said reciprocating arm and rotary device, said computer controlling the movements of said rotary device to form an operating cycle in which the arm moves to insert the actuating piece into the lock cylinder opening, the rotary device is actuated to move the actuating piece up and down at least once while the actuating piece is in the lock cylinder opening, and the arm is moved to remove the actuating piece from the lock cylinder opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A test fixture for a door lock mechanism having a lock cylinder with an opening comprising:
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a base; a plurality of hydraulically-operated suction cups at edges of the base, said suction cups when operated acting to mount the base to a surface of an object in which the lock cylinder is located; a rotary shaft fastened to the base; a plurality of hydraulic piston-cylinder assemblies with movable piston rods, said piston rods being connected to said rotary shaft to cause rotation thereof when said piston rods are moved in a controlled fashion; a ram arm with one end connected to said rotary shaft for rotation of said ram arm therewith, said ram arm having a piston-cylinder assembly with a movable piston rod, said ram arm piston rod causing the other end of said ram arm to extend and retract when the ram arm piston rod is moved in a controlled fashion; and an actuating piece located at the other end of said ram arm, said actuating piece being of a size to permit it to be inserted into the lock cylinder opening. - View Dependent Claims (14, 15, 16)
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17. A test fixture for a door lock mechanism having a lock cylinder with an opening comprising:
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an actuating piece for insertion into the lock cylinder opening; means for moving said actuating piece to insert the actuating piece into and remove it from said lock cylinder opening; means for reciprocating said actuating piece up and down while in said lock cylinder opening, and a controller for repeating the cycle of actuating the moving means to insert the actuating piece into the lock cylinder opening, actuating the reciprocating means to move the actuating piece up and down while in the lock cylinder opening, and actuating the moving means to remove the actuating piece from the lock cylinder opening. - View Dependent Claims (18, 19)
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Specification