Hidden dark-key lock core
A lock cylinder and inner key technology, applied in the field of hidden secret key lock cylinder, can solve the problems of leakage and easy imitation, and achieve the effects of long service life, good security and shortening the time of entering the room.
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[0020] A hidden key lock cylinder of the present invention, such as Figure 1 to Figure 2 As shown, it includes a cylindrical double key shell 1, and a lock core set 2 arranged in the cylindrical double key shell 1, and a first pin 5, which is arranged at the upper end of the cylindrical double key shell 1 and at the lower end of the cylindrical double key shell 1, The second pin 4, the closing spring flat 12, and the third pin 3, and the inner key 7 set in the lock cylinder 2 and the inner key spring 16 set in the inner key 7, and the inner key connected to the inner key 7 The connecting sleeve 8 and the inner key setting spring 20 connecting the inner key 7 and the inner key connecting sleeve 8 and the single tongue nut 10 arranged on the side of the cylindrical double key shell 1; the lock core setting 2 is arranged in sequence There are steel balls 13, key positioning spring 18 and key positioning seal 19. It has the advantages of simple structure, safety and reliability. ...
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