Multipurpose Combination Chain Lock for Bicycle and Motorcycle Anti Theft

When the lock needs to be opened, insert the key into the lock core and turn it clockwise. The rotation angle is limited by the lock core positioning slot. The eccentric shaft behind the lock core rotates in the small rectangular hole on the side of the lock, and the eccentric shaft drives the lock to move upwards {the eccentric shaft and the rectangular hole cooperate to turn the rotation into movement}. The lock moves upward against the pull of the small tension spring under the restriction of the guide plate. When the key is turned to a certain angle, the lock is lifted out of the lock ring tail slot, and the lock ring retracts rapidly into the lock box under the action of the large tension spring, until the lock is opened when the wrench touches the positioning block. After the lock ring is retracted, the lock lock is blocked by the lock ring and cannot fall back to its original position. The lock core is also restricted by the lock lock lock to the position after rotation. The key is stuck by the round bullet in the key tooth and cannot be pulled out of the lock core.

The anti-theft lock is composed of a lock head, an inner lock seat, and an insertion rod. The lock head and the inner lock seat are fixed on both sides of the horizontal bar of the bicycle rear wheel frame with screws and connecting devices. The insertion rod passes through the rear wheel, the inner lock seat, and is fixed on the lock head. The inner lock seat is provided with a through hole with a necking in the middle perpendicular to the insertion rod. On both sides of the necking, one end of the necking is inserted with a locking pin that can be embedded between the flywheel teeth and is sleeved with a spring. The locking pin passes through the necking and is hinged with the pull pin rod, The locking pin is provided with a notch that can be clamped with the insertion rod. When in use, one end of the lock pin is pushed between the flywheel teeth by the spring, and then the insertion rod is inserted into the lock head to lock, so the flywheel and the wheel cannot rotate.