Blade lock

Abstract

The invention discloses a blade lock which comprises a lock body, a lock cylinder and a key. A number of blade grooves are arranged in the lock cylinder. Three blades which are arranged before and after along the axial direction of the lock cylinder are arranged in each blade groove. A keyhole is arranged in the axial direction of the lock cylinder. The key is provided with a line-shaped groove. The upper side and the lower side of the line-shaped groove are respectively provided with an inner milling machine tooth groove. The upper side or the lower side of the key is provided with an outer milling tooth groove. Each blade is provided with a corresponding face at a corresponding position, wherein the face matches a tooth groove in the key. Due to the three-groove structure of the key, the password amount is very large, and the mutual unlocking rate of a product is very low. Three blades in each blade groove are provided with springs. Technology unlocking must overcome the pressure of the springs. The performance of technology unlocking prevention is greatly improved. The key is provided with the line-shaped groove, and the lock cylinder is provided with a rib which matches the line-shaped groove. Due to the rib, a strong picklocking tool used by a thief becomes fragile. The product has a good pick-proof performance.

Description

technical field [0001] The invention relates to a lock, in particular to a blade lock cylinder. Background technique [0002] The blade locks currently on the market are generally equipped with several blade grooves on the lock cylinder, and each blade groove is equipped with two blades. This kind of lock has relatively poor anti-technical opening performance due to the small number of keys; recently introduced Among the blade locks in the market, some manufacturers set three blades in each blade groove. For locks of the same size and length, the number of blades set with three blades is more than that of two blades, so it is anti-technical. The performance should be greatly improved. However, among the three blades in each blade groove, two of the blades are equipped with springs, and the remaining one is not equipped with springs. The blades with springs have better anti-technical opening performance. , because when the unlocking tool moves the blades, each leaf with spri...

AI Technical Summary

Problems solved by technology

[0002] The blade locks currently on the market are generally equipped with several blade grooves on the lock cylinder, and each blade groove is equipped with two blades. This kind of lock has relatively poor anti-technical opening performance due to the small number of keys; recently introduced Among the blade locks in the market, some manufacturers set three blades in each blade groove. For locks of the same size and length, the number of blades set with three blades is more than that of two blades, so it is anti-technical. The performance should be greatly improved. However, among the three blades in each blade groove, two of the blades are equipped with springs, and the remaining one is not equipped with springs. The blades with springs have better anti-technical opening performance. , because when the unlocking tool moves the blades, each leaf with springs must be set in the correct position, and at the same time overcome the pressure of the leaf springs, so the operation is relatively difficult, and the blades without springs, because there is no spring Pressure, so it can move freely, and will not move after moving, so its anti-technical opening performance is poor

[0003] In addition, there are no spring blades, and the tooth blades that match it on the key can only use internal milling teeth. The shape of the tooth blades must be a serpentine groove. On the lock cylinder, the key hole matching the key cannot be provided with convex ribs, because the serpentine groove on the key cannot be matched. There are already three rows of teeth on the key, and there is no room for another inline groove, so it is matched with it There is no way to set the ribs in the keyhole of the keyhole, so the key can only be made relatively thin. As long as the key is thicker, the corresponding lockpicking tool can also be made thicker. It is easy to break the lock and open it. Therefore, such a lock The head, the key can only be set on the front, and the back is not dare to set the anti. If the back is also set, the key will be very thick and not anti-prying. The key can only be set on the front. not convenient

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