A kind of blade theftproof lock
Technical field
The utility model relates to a kind of lockset, especially relates to a kind of blade theftproof lock.
Background technology
The blade theftproof lock is a kind of lockset commonly used, the blade theftproof lock that various structures differ has appearred in the market, but generally all there is the problem of the few and theftproof performance difference of tartar amount in these blade theftproof locks, in addition, each blade in these blade theftproof locks all is equipped with a leaf spring, and an end of leaf spring acts on the lock core, and such structure is easy to be opened by technological means by lawless people.The utility model patent " a kind of vane type tapered end " (patent No. is 02263718.4) of China's bulletin disclosed a kind of vane type tapered end as on September 10th, 2003, this tapered end is by being provided with several blade that radially connects storage chambeies on lock cylinder, in each blade storage chamber two blades are set movingly and constitute the bidirectional blade structure, keyhole is the slotted eye that the cross section is distortion or non-straight trough, though the tapered end of this structure has bigger progress on the tartar amount, but because each blade all is equipped with a leaf spring, and an end of leaf spring acts on the lock core, be difficult to prevent that lawless people from finding the method for unblanking by technological means, one by one each blade opened to reach the purpose of unblanking then.As the utility model patent " a kind of padlock head " (patent No. is 200320120655.X) that on December 1st, 2004, China announced a kind of padlock head is disclosed in addition, comprise lock housing, lock core, blade, the blade back-moving spring, in lock core, offer blade groove and spring eye, blade and blade back-moving spring are placed in one respectively, be provided with also on lock core that horizontal croze communicates with blade groove and vertical substantially with it, on lock housing, also correspondingly be provided with groove and horizontal croze is complementary, in horizontal croze, be provided with horizontal bolt versatilely, side at the corresponding horizontal bolt of blade is provided with groove, the shape of one side of horizontal bolt respective slot is suitable with it, horizontal bolt two ends along its length are provided with step, on lock core above the step, be installed with pressing plate, between step and pressing plate, be provided with return spring, the tapered end of this structure is owing to be provided with the rotation that horizontal bolt-lock is lived lock core in blade lock core, have only when all blades are unlocked simultaneously, lock just can be opened, can effectively prevent technical unlocking, but there is tartar quantity in this tapered end very little, shortcomings such as mutual opening rate is bigger.
Summary of the invention
Technical problem to be solved in the utility model provides and a kind ofly can increase the tartar amount, and can prevent the blade theftproof lock of technical unlocking.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of blade theftproof lock, the lock housing and the lock core that comprise tubular, described lock core upper edge axially parallel is provided with a plurality of blade grooves that radially run through described lock core, it is right to be provided with blade in the described blade groove, described blade is to comprising first blade and second blade, first side of described first blade is provided with the first lock tooth of projection, first side of described second blade is provided with the second lock tooth of projection, second side of described first blade is provided with first groove of unblanking, second side of described second blade is provided with second groove of unblanking, all described first groove and all described second grooves of unblanking of unblanking coincide under the lock opening, closing under the state each described first groove and each described second groove of unblanking of unblanking at locking staggers mutually, radially be provided with first spring cavity on described first blade, radially be provided with second spring cavity on described second blade with the described first spring cavity equal altitudes, radially be provided with leaf spring in the cavity that described first spring cavity and described second spring cavity are formed, be provided with between described lock housing and the described lock core and be used for and described first the unblank side column locking mechanism of groove fit of groove and described second of unblanking.
On described side column locking mechanism comprises side column and is axially set in described lock core and and the side column groove that be communicated with vertical with described blade groove, one side of described side column is the limit of unblanking, the opposite side of described side column is a locking edge, the inwall of described lock housing is provided with and is used for the lock slots that cooperates with described locking edge, the two ends of described locking edge are respectively arranged with the side column spring groove, be provided with the side column spring in the described side column spring groove, described side column spring is connected with the bearing pin that is used to push down described side column spring, described lock core is provided with the bearing pin groove that is used to hold described bearing pin, described bearing pin groove is vertical with described side column groove and be communicated with described side column groove, the described limit of unblanking embeds described first groove and described second of unblanking and unblanks in the groove and the inwall of described locking edge and described lock housing offsets under the lock opening, and the side that closes second side of described unblank limit and described first blade and described second blade under the state at locking offsets and described locking edge embeds in the described lock slots.
Described first unblanks, and tartar that groove and described second unblanks on groove and the external key correspondence position is complementary, and closes that all described first lock teeth coincide under the state, all described second lock teeth coincide and described first spring cavity and described second spring cavity coincide at locking.
Radially be provided with one first locating piece in described first spring cavity, radially be provided with in described second spring cavity one with described first locating piece second locating piece in opposite directions, one end of described leaf spring is connected on described first locating piece, and the other end of described leaf spring is connected on described second locating piece.
Described first groove and described second groove of unblanking of unblanking is the groove triangular in shape that concaves, and the described limit of unblanking is cambered outwards limit triangular in shape.
The two ends of first side of described first blade are respectively arranged with and are used for first projection that prevents that described first blade from rocking at described blade groove, and the two ends of first side of described second blade are respectively arranged with and are used for second projection that prevents that described second blade from rocking at described blade groove.
Compared with prior art, it is right that advantage of the present utility model is to be provided with the blade of being made up of first blade and second blade in the blade groove, and this to blade to being connected with a leaf spring, it is a shared leaf spring, under the key length situation identical with lock core length, the lock of this structure and existing phase-locked ratio, the tartar amount of lock of the present utility model is more, can effectively reduce mutual opening rate like this, thereby strengthened theftproof performance, leaf spring is arranged in the cavity of first spring cavity and second spring cavity composition in addition, the active force at the two ends of leaf spring all acts on the blade, can prevent effectively that like this lawless people from opening this lock by technological means; Close under the state all first lock teeth at locking and coincide and be arranged in a straight line, all second lock teeth coincide and are arranged in a straight line, and can prevent further that like this lawless people from opening this lock by technological means; Be provided with first in first spring cavity and decide the piece position, be provided with second in second spring cavity and decide the piece position, and first locating piece and second is decided piece and is provided with in opposite directions, the two ends of leaf spring can be separately fixed on first locating piece and second locating piece like this, when using this lock, leaf spring can be more stable be fixed in the spring cavity, be distorted and be unlikely because of external force; First groove and second groove of unblanking of unblanking is leg-of-mutton groove, unblank the limit of unblanking of groove fit also for leg-of-mutton limit with first groove and second of unblanking, like this under the lock opening, the limit of unblanking embedded first groove and second of unblanking just now and unblanked in the groove, and leg-of-mutton design can make more or less freely the sliding in the limit of unblanking unblank in the groove; Each first blade is respectively arranged with first projection at the two ends of first side, and each second blade is respectively arranged with second projection at the two ends of first side, and first projection and second projection can effectively prevent blade double swerve in blade groove; In addition, the utility model is simple in structure, the use aspect, and the safety and reliability height.
Description of drawings
Fig. 1 is the utility model and the structural representation of corresponding key;
Fig. 2 a is for closing the combining structure schematic diagram of a pair of blade under the state pair and shared leaf spring at locking;
Fig. 2 b is that A among Fig. 2 a is to sectional view;
Fig. 3 a is the axial sectional view of the utility model under the lock opening;
Fig. 3 b is the radial cross-section of the utility model under the lock opening;
Fig. 4 closes radial cross-section under the state for the utility model at locking.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, a kind of blade theftproof lock, comprise the lock housing 1 of tubular and be arranged in the lock housing 1 and the lock core 2 that cooperates with lock housing 1 activity, lock core 2 upper edge axially parallels are provided with a plurality of blade grooves 4 that radially run through lock core 2, be provided with blade to 3 in the blade groove 4, blade comprises first blade 31 and second blade 32 to 3.First side that first side of first blade 31 is provided with first lock tooth 33, the second blades 32 of projection is provided with the second lock tooth 34 of projection, closes at locking that all first lock teeth 33 coincide under the state, and all second lock teeth 34 coincide.The two ends that the two ends of first side of first blade 31 are respectively arranged with first side that is used for preventing first projection, 81, the second blades 32 that first blade 31 rocks at blade groove 4 are respectively arranged with and are used for second projection 82 that prevents that second blade 32 from rocking at blade groove 4.Second side of first blade 31 is provided with first groove 35 of unblanking, second side of second blade 32 is provided with second groove 36 of unblanking, first the unblank groove 36 of groove 35 and second of unblanking is complementary with tartar 91 on external key 9 correspondence positions, all first groove 35 and all second grooves 36 of unblanking of unblanking coincide under the lock opening, close under the state each first groove 35 and each second groove 36 of unblanking of unblanking at locking and stagger mutually.Radially be provided with first spring cavity 37 on first blade 31, radially be provided with second spring cavity 38 on second blade 32 with first spring cavity, 37 equal altitudes, close at locking that first spring cavity 37 and second spring cavity 38 coincide under the state, radially be provided with leaf spring 7 in the cavity that first spring cavity 37 and second spring cavity 38 are formed.Radially be provided with one first locating piece 61 in first spring cavity 37, radially be provided with in second spring cavity 38 one with first locating piece 61, second locating piece 62 in opposite directions, one end of leaf spring 7 is connected on first locating piece 61, and the other end of leaf spring 7 is connected on second locating piece 62.Be provided with between lock housing 1 and the lock core 2 and be used for and first the groove 35 and second side column locking mechanism 5 that groove 36 cooperates of unblanking of unblanking, on side column locking mechanism 5 comprises side column 51 and is axially set in lock core 2 and side column grooves 52 vertical with blade groove 4 and that be communicated with, one side of side column 51 is the limit 53 of unblanking, the opposite side of side column 51 is a locking edge 54, the inwall of lock housing 1 is provided with and is used for the lock slots 11 that cooperates with locking edge 54, the two ends of locking edge 54 are respectively arranged with side column spring groove 55, be provided with side column spring 56 in the side column spring groove 55, side column spring 56 is connected with the bearing pin 57 that is used to push down side column spring 56, lock core 2 is provided with the bearing pin groove 58 that is used to hold bearing pin 57, bearing pin groove 58 and side column groove 52 are vertical and be communicated with side column groove 52, embed first groove 35 and second of unblanking and unblank in the groove 36 and the inwall of locking edge 54 and lock housing 1 offsets on the lock limit 53 of unblanking under the opening, the side of second side of under locking closes state, the unblank limit 53 and first blade 61 and second blade 62 offset and locking edge 54 embedding lock slots 11 in.First groove 35 and second groove 36 of unblanking of unblanking is the groove triangular in shape that concaves in this specific embodiment, unblank limit 53 is cambered outwards limit triangular in shape, and leg-of-mutton design can make more or less freely first groove 35 and second of unblanking that slides in the limit 53 of unblanking unblank in the groove 36.
Operating principle of the present utility model is:
Insert corresponding key when unblanking, each first lock tooth and each second was locked tooth and was contacted with on the key tartar and move up and down this moment; After key inserts in the lock core fully, each first lock tooth and each second lock tooth is corresponding one by one with on the key tartar, all first groove and all second grooves of unblanking of unblanking coincided and were a straight line and arrange this moment, side column is under the thrust of side column spring simultaneously, the limit of unblanking of side column embeds first groove and second of unblanking be that a straight line arranges and unblanks in the groove, limit and first groove and second groove of unblanking of unblanking of unblanking fits like a glove, the locking edge of side column is equal with the inwall cambered surface of lock housing, and rotational lock core can be unblanked.Rotational lock core embeds in the lock slots on the inwall be arranged at lock housing the locking edge of side column when locking, extract key, blade resets under the active force of leaf spring, because of each first groove and second groove of unblanking of unblanking is that triangle cooperates with the limit of unblanking of side column, so this moment, blade can push the locking edge of side column in the lock slots of lock housing the closure of promptly locking.