Antitheft lock for use in well cover
An anti-theft lock and manhole cover technology, which is applied in the field of anti-theft locks, can solve the problems of insufficient strength of non-ferrous manhole covers, high cost of cement manhole covers, and manhole covers can only be eliminated, and achieve the effect of simple structure, flexible mechanism and few mechanical nodes
Image
Examples
Embodiment Construction
[0030] The structure of the present invention will be further described below in conjunction with the embodiments by the accompanying drawings:
[0031] The anti-theft lock used on the well cover of the present invention, as shown in Figures 1, 2, and 4, has three parts: a key, a lock cylinder mechanism, and a tongue;
[0032] Wherein, the key 22 can itself be the key core 1, that is, the whole body is a bar-shaped rare earth permanent magnet block, such as: neodymium iron stilbium, or neodymium nickel cobalt, or permanent magnetic ferrite;
[0033] As shown in Figures 5 and 6, it is also possible that only the key core 1 part of the key 22 is a bar-shaped rare earth permanent magnet block, that is, the key 22 is made up of the key core 1, the magnetic handle 2 and the fixed bar 4; the key core 1 It is a special-shaped cylinder with a grooved waist-shaped cross section (as shown in Figure 6), made of permanent magnetic materials, which include various rare earth permanent magn...
PUM
Login to View More Abstract
Description
Claims
Application Information
- IPC
- E02D29/14
- Inventors
- θ‘ζ―ε