The most secure bicycle lock

If you ask the most safe bicycle lock, can you say it? Everyone knows that bicycle locks the function of anti-theft bicycle. In the early days of reform and opening up, many people called for strengthening bicycle locks. safety.

The most secure bicycle lock classification for bicycle locks

The anti-theft lock anti-theft lock is composed of a lock head, an inner lock seat and a plunger. The lock head and the inner lock seat are fixed on the two sides of the horizontal rod of the bicycle rear wheel frame by screws and connecting devices, and the insert rod passes through the rear wheel and the inner lock seat. The utility model is fixed on the lock head, and the inner lock seat is provided with a through hole with a neck narrowing in the middle of the inserting rod, and the two sides of the neck are fixed, and one end is inserted with a lock pin which can be inserted between the teeth of the flywheel and is sleeved with a spring. The pin is hinged to the pull pin through the neck, and the lock pin is provided with a slit that can be engaged with the plunger. When in use, one end of the locking pin is pushed into the tooth of the flywheel by the spring, and then the plunger is inserted into the lock to lock, and the flywheel and the wheel cannot rotate.

Anti-theft lock

The crab-shaped marble bicycle lock crab type marble bicycle lock is mainly composed of a lock case, a lock bottom, a lock brake, a lock head, a lock ring and the like. Lock ring, sleeve mouth, lock case, lock head, lock brake, small tension spring, large tension spring, lock bottom.

Crab-shaped marble bicycle lock

First, the lock case

The lock case is a skeleton of a crab-type marble bicycle lock assembly. The circular orbit of the lock case is the travel track of the lock ring, and the lock ring and the lock case cooperate to form a closed ring to achieve the locking effect. The side of the lock housing ring track leaves the active track for the lock ring wrench, which determines the position of the lock ring movement. The upper positioning groove of the lock case is used for mounting the lock head, and the key insertion hole is provided on the side of the positioning groove. The guide piece from the middle of the lock case is used for locking the movable guide. Other punching holes in the lock case are used for riveting and mounting.

Second, the bottom of the lock

The bottom of the lock is mainly used for sealing, and its structure is very similar to the lock case. A circular hole is drilled in the corresponding bottom of the lock bottom and the lock shell, so as to be riveted and closed with the lock shell, and the positioning reinforcing rib is bent at the opening position of the lock ring wrench to strengthen the strength of the positioning.

Third, lock the brake

The lock brake is the main part of the lock of the car. The structure of the lock brake is relatively simple, and it is a stamped steel plate. The two rectangular holes at the bottom of the lock gate are guide grooves for the movement of the lock brake. The guide piece on the lock case cooperates with the upper guide groove of the lock gate to restrict the movement of the lock gate. The small rectangular hole on the side of the lock gate is used to cooperate with the eccentric shaft of the lock core to perform motion form conversion. The lug that is bent out on the side of the lock brake is used to hook the small tension spring to provide power for the lock lock. The bottom part of the lock gate is the lock knife, the knife and the lock beam tail groove cooperate to complete the lock function.

Fourth, the lock ring assembly

The lock ring assembly is the execution original of the lock off. It consists of two parts, a lock ring and a wrench. The arc of the lock ring is the same as the lock case track and can be freely rotated in the track. The hook end groove of the lock beam is used to hook the large tension spring to provide power for the lock ring to open, and the straight groove of the tail groove hook and the lock brake cooperate to hinder the lock ring from retreating. The wrench is riveted and fixed on the lock ring to transmit power and position.

The key can be removed after the crab-shaped marble bicycle lock is closed.

When the lock needs to be opened, the key is inserted into the lock clockwise to rotate, and the rotation angle is limited by the lock center positioning groove. The eccentric shaft behind the lock core rotates in a small rectangular hole on the side of the lock brake, and the eccentric shaft drives the lock gate to move upwards {the eccentric shaft and the rectangular hole cooperate to turn the rotation into movement}. The lock brake is moved upward against the tension of the small tension spring under the restriction of the guide piece. When the key is turned to a certain angle, the lock brake is proposed to the lock ring tail groove, and the lock ring is rapidly retracted into the lock box under the action of the large tension spring, and the lock is opened when the wrench hits the positioning block. After the lock ring is retracted, the lock is blocked by the lock ring and cannot be dropped to return to the original position. The lock is also restricted by the lock to the position after the rotation. The key is caught by the round ball in the key tooth and cannot be pulled out from the lock. .

When the lock needs to be closed, the wrench on the lock ring is pushed by hand, and the lock ring overcomes the pulling force of the large tension spring and extends out of the lock body along the track of the lock case to enter another set of mouths. At this time, the lock gate is at the tail groove of the lock ring, and the lock gate moves downward along the guide groove under the action of the small tension spring, enters the lock beam tail groove, and the lock ring is locked by the lock gate. When the lock brake moves downward, the lock brake also drives the lock eccentric shaft to rotate, so that the lock core is turned back to the original position, and the key can be unplugged.

Old-fashioned bicycle lock This kind of bicycle lock is used to lock the bicycle tripod and the wheel so that the wheel does not rotate, thus playing the purpose of anti-theft.

Vintage bicycle lock

When installing this type of lock, the lock is fixed to the tripod with a wire and a splint. The lock is made of iron sheet, and the structure mainly includes a lock body, a lock core, a spring, a marble and a lock column, a tension spring, a pin, and a bolt. Its lock body is inside the iron cladding. The lock is a five-ball hole, 10 marbles, belonging to a small five-tooth lock, and a card at the end of the lock. This dial card can be used to move the bayonet to move the bayonet up and down. When the latch pin is caught in a recess of the long lock post, the hospital lock cylinder can be controlled to lock the wheel and prevent the wheel from rotating. A force spring is mounted at the end of the lock cylinder. There is also a push pin at the center of the outer side of the lock cylinder. The push pin is exposed on the outside of the lock body (the entire lock body case is made of iron), and the lock pin is locked in the locked state, so that the lock pin can not move, If it is extended into the key, twist the lock clockwise 90 degrees, then drive the card and lift the card pin, so that there is nothing to catch the groove on the lock cylinder. The lock cylinder is under the action of the tension spring. Pull back into the lock and the lock is open. At this time, the keyhole of the lock key is 90 degrees from the original lock state. This is because a spring installed in the lock body is stuck against the lock core, so that the lock cannot be automatically rebounded to the original position, so that the concave tooth groove on the key is caught by the marble, and the keyhole of the lock key cannot be directly dialed. The key can be dialed out unless the lock is relocked and the lock and key are returned to their original positions.

The weakness of this kind of lock is: 1 can not prevent cockroaches and cockroaches; 2 can not prevent technical opening; 3 can not prevent oxygen welding, cutting guns can be broken; 4 can not prevent chemical corrosion; 5 can not prevent drilling; 6 can not prevent the imitation of the key.

The new bicycle tamper-proof lock was only available in the early 1990s. The creator of this lock is Liuzhou. He used to be a thief who specializes in stealing bicycles. He was sent to labor three times for stealing bicycles. After the last period of parenting, he decided to change his evil and be good, to be a human being, to contribute to society and to make a living for himself. He finally calmed down and studied the bicycle lock transformation technology. Later, he invented and created this. A bicycle anti-shackle lock, and patent application, set up a bicycle factory, named this lock "standard king bicycle anti-smash lock".

New bicycle anti-smash lock

This lock has five marble holes, a few marbles, and is a small five-toothed lock. The key is made of all copper. Its lock body is an all-inclusive steel shell with no gaps. It does not have an open long curved slot on the lock cylinder of the lock body like the old bicycle lock, and there is no push bolt. It has a gear mounted behind the lock. This button is connected to a shrapnel that just catches a side slot on the lock. There is a strong tension spring at the end of the lock cylinder. When the button on the lower side of the hospitalized lock body is pressed by hand, the pinch spring of the lock pin will be disengaged from the unlocking heart. Under the action of the tension spring at the end of the lock cylinder, the gear on the lock post will drive the lock gear on the lock pin, so that The lock is turned and turned. The lock cylinder will contract back. When the lock is rotated 800 degrees (clockwise), the lock is fully opened, and the key opening is 80 degrees from the original position, and the lock is not returned to its original position. In this way, the marble card informs the concave slot on the key, and the key cannot be dialed out of the keyhole, and is in the state of the key. If it is locked, it is necessary to hold the key counterclockwise to twist 800 degrees, the rotation of the lock core drives the gear, and then drives the gear on the lock cylinder to extend the lock post downward, and naturally locks. At this time, the key can be taken out.

This lock locks the lock except for the keyhole, and there is basically no gap in other parts. Moreover, the lock case is made of all steel and is relatively strong. Therefore, the general thief uses a screwdriver, a small crowbar to lick this lock, and can not open the lock. The installation of this lock, like the old bicycle lock, is fixedly mounted on the bicycle tripod to catch the wheel and prevent the wheel from rotating.

The weakness of this kind of lock is: 1 can not prevent technical opening; 2 can not prevent drilling; 3 can not prevent chemical corrosion; 4 can not prevent oxygen welding, cutting gun break; 5 can not prevent the quilt imitation key.

Bicycle chain lock This kind of chain lock is used to lock on the front or rear wheel of the bicycle, or to lock the bag, the lock box, and also to lock the bag on the train rack.

Bicycle chain lock

The lock is a small four-toothed lock. The lock body is made of aluminum alloy and has a cylindrical shape with a diameter of about 25 mm and a length of about 5 cm. The lock is made of all copper and is mounted in the central part of the lock. The lock is connected to a steel chain of about 6 mm thick at the flat end of the lock body. The entire chain is covered by a plastic hose, and the chain is about one foot eight inches long. A steel lock stud is attached to the other end of the chain. There is a circular groove around the ring on the stud head. There is a round hole in the plane at the other end of the lock body, that is, the lock cylinder hole, just enough to fit the lock column head. Inside this round hole is a lock pin that is connected to the lock. There is a piece of shrapnel on the lock pin. If the lock head is inserted into the hole of the lock cylinder, the spring will pop the lock pin and not lock the circular groove on the lock head, which is locked. If the lock is unlocked, just extend the key into the keyhole of the lock key and twist it 90 degrees clockwise. The lock core pushes the elastic piece down. The elastic piece drives the lock pin to shrink back. Then the handle of the chain is pulled out by hand, and the lock is opened. It is.