Antitheft lock device

Abstract

The invention discloses an antitheft lock device, comprising a circular support frame and a power supply. Cross beams in a pair, upper and lower cross beams, are arranged symmetrically at front and rear ends of the circular support frame, a pair of brake pads are elastically connected between the upper cross beam and the lower cross beam, the brake pads include an upper brake pad and a lower brake pad, a group of shape memory alloy springs are arranged between two corresponding sides of each of the upper brake pad and the lower brake pad, each group of shape memory alloy springs includes a single-travel heat-shrinking spring and a double-travel heat-shrinking cold-contracting spring, and two ends of the single-travel heat-shrinking spring and two ends of the double-travel heat-shrinking cold-contracting spring are connected respectively with the power supply through a brake switch and a transformer. By controlling an input current signal, the shape memory alloy springs are driven so that the brake pads hold a rotary disc, thus locking wheels. The antitheft lock device is simple in structure, easy to mount, low in cost and good for market promotion.

Description

Technical field [0001] The invention relates to an anti-theft lock device. Background technique [0002] At present, two-wheeled and three-wheeled electric vehicles and motorcycles on the market have a low level of anti-theft technology. Most of them can only lock the tires of the car. The anti-theft lock is on the outside of the car body. The lock has a simple structure and single function, which is easy to be picked by thieves. Open question. Today's thieves are pervasive, and unlocking is only a matter of craftsmanship and numbers for them. Most of them are engaged in motor vehicle repair and unlocking technology. They are very familiar with the structure of the vehicle, and are skilled in theft. The main methods are key stabbing and prying. For vehicle locks, disconnection, and connection of vehicle lines, bolt cutters, screwdrivers, cross-breaking tools, multiple types of electric vehicle keys, motorcycle ignition locks and other crime tools are often used, resulting in man...

AI Technical Summary

Problems solved by technology

The magnetic drive anti-theft lock valve mentioned in this article adopts a magnetic drive mechanism. The head end of the magnetic drive anti-theft lock valve is replaced by an ordinary mechanical anti-theft lock. The pressure plate of the valve opening can move up and down, so that the valve is in the open or closed state. However, this method makes the use process complicated and expensive. The magnetic lock is limited by the magnetic force, and the magnetic lock can only be opened in one direction. , the installation position is also limited

U.S. Patent US20160048673A1 proposes an electronic security lock. The electronic security lock uses a processing program to store instructions in the memory. When a program is executed, the electronic security lock receives an electronic certificate instruction to apply for unlocking. After receiving the instruction This program verifies whether the certificate is valid. The lock has a security level. During this period, the certificate instruction will be unlocked only when it reaches the preset security level. The electronic security lock is easy to operate, but the electronic certificate is easy to be illegal. Copy, and the electronic security lock is easy to be unlocked by abnormal methods (such as tools, picking, using strong magnets, etc.)

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