Detailed description of the invention

The present invention is further detailed explanation below in conjunction with the accompanying drawings.

Embodiment 1

With reference to Fig. 1, Fig. 2 and Fig. 7.The lock core of the present invention, including fixed body 1 be located at fixed body 1 Interior rotary body 2, rotary body 2 includes that main shaft 3 and one end are fixed on the pipe 4 outside main shaft 3, Offering the connecting hole being connected with pipe 4 on the sidewall of main shaft 3, connecting hole is inserted into pin 30 For fixed main shaft 3 and pipe 4, fixed body 1 offers the axis hole of through fixed body 1, pipe 4 Match with axis hole in being arranged on axis hole.

Main shaft 3 is provided with spirillum 31, and spirillum 31 and main shaft 3 are formed in one structure, spiral Body 31 includes that projective structure 312 and groove 311, projective structure 312 and groove 311 are on main shaft 3 Arrange twist.Offer through hole 41 on pipe 4, in fixed body 1, offer installing hole 11, Through hole 41 and installing hole 11 are correspondingly arranged with the groove 311 of the spirillum 31 of main shaft 3, i.e. through hole One end respective slot 311 of 41, the other end correspondence installing hole 11 of through hole 41, corresponding through hole 41, the center line of installing hole 11 and groove 311 is positioned in same radial alignment.Owing to groove 311 is Spiral type, a series of through holes 41 on pipe 4 are correspondingly arranged with groove 311, thus, through hole 41 Arrangement track be also spiral type, the entity part of the pipe 4 in the middle of adjacent two through holes 41 is opened Having the hole inserting cylinder 60, one end of cylinder 60 is fixed on pipe 4, other end contact groove 311 Bottom land, i.e. cylinder 60 is positioned at rotary body 2.Through hole 41, installing hole 11 and spirillum 31 The first hoodle 5 and the second hoodle 6 matched with the first hoodle 5, the first bullet it is provided with in groove 311 Pearl 5 is positioned at groove 311 and the through hole 41 of spirillum 31, the second hoodle 6 be positioned at through hole 41 with In installing hole 11, the spring 7 for compressing the second hoodle 6, spring 7 are installed in installing hole 11 One end prop up the second hoodle 6, the outward flange flush of the other end and fixed body 1.

The lock core of the present invention also includes case 8 and cap 9, and case 8 is fastened on the outside of fixed body 1, The other end of spring 7 props up the inwall of case 8, and cap 9 is fixed on fixed body 1 upper lock tongue 10 institute In side, in use, dead bolt 10 matches with main shaft 3, and main shaft 3 is provided with C-shaped Pin 50, C-shaped pin 50 and pipe 4 be used for fixing dead bolt, and C-shaped pin 50 is fixed on main shaft 3.Shell Lid 9 and fixed body 1 between nut sheet 40 is installed, consequently facilitating lock core by screw rod be arranged on door or On other products.

As shown in Figure 3 and Figure 4, the key matched with above-mentioned lock core includes key piece 20, key In the shape of a spiral, key piece 20 matches sheet 20 with the spirillum 31 on main shaft 3, key piece 20 External diameter is equal with the external diameter of spirillum 31, and key piece 20 offers the seam matched with cylinder 60 Gap 201, gap 201 runs through key piece 20, i.e. gap 201 at key piece 20 in the shape of a spiral, and Direction is consistent with key piece 20.

As shown in Figure 5 and Figure 6, the dual-side of key piece 20 is equipped with reinforcement limit 202, strengthens limit 202 It is formed in one with key piece 20.The inner side of key piece 20 is provided with the teeth groove 203 being arranged in order, tooth Groove 203 can be arcuate groove or V-shaped groove, and teeth groove 203 is formed in one with key piece 20, adds Strong limit 202 is positioned at the both sides of teeth groove 203.

In order to the key of the present invention can preferably enter in lock core, in the front end of key piece 20, the most first Enter one end of lock core, be machined with chamfering so that the thickness of front end is less than the thickness of remainder, side Just use.

After the key of the present invention rotates into lock core, key piece 20 and the spirillum 31 on main shaft 3 Matching, key piece 20 screws in the cylinder 60 in the groove 311 of spirillum 31, in groove 311 Through the gap 201 in key piece 20, the teeth groove 203 of key piece 20 promotes in groove 311 One hoodle 5 moves to the direction of the second hoodle 6, and the first hoodle 5 promotes the second hoodle 6 compression spring 7.Under the effect of the teeth groove 203 of key piece 20, by the first hoodle 5 and the second hoodle 6 jack-up, Second hoodle 6 completely in the installing hole 11 in fixed body 1, and then, release the second hoodle 6 Locking to rotary body 2 so that rotary body 2 rotates along with the rotation of key piece 20.Along with The rotation of rotary body 2, main shaft 3 drives dead bolt to rotate, and lock is opened.

Above-described is only the preferred embodiment of the present invention, it is noted that general for this area For logical technical staff, without departing from the concept of the premise of the invention, it is also possible to make some changes Shape and improvement, these broadly fall into protection scope of the present invention.