CN205012777U - Mechanical lock of double-core mutual control trap type blade mechanism - Google Patents

Abstract

The utility model discloses a mechanical lock of a double-core mutual control trap type blade mechanism, which comprises a lock head body, a front lock core, a rear lock core, a front locking mechanism, a rear locking mechanism, a gate and a key; the front locking mechanism is a blade mechanism, the blade mechanism comprises a tumbler and at least one blade matched with the bottom of the tumbler, and the blade is provided with a code groove and at least one trap groove; the rear lock core is also provided with a control mechanism for controlling the tumbler, and the tumbler can not fall down before the rear lock core is not moved in place; otherwise, the rear locking mechanism decodes, when the rear lock cylinder moves backwards in place along the axial direction, the tumbler falls down, when the tumbler falls down and enters the code groove of the blade, the front locking mechanism decodes, the gate is closed, and the front lock cylinder and the rear lock cylinder rotate together under the driving of the key to realize unlocking; when the tumbler falls into the trap slot of the blade, the front locking mechanism is not decoded and the blade cannot move. The utility model discloses a new theory, the new method of difference trade time difference are one of the most effective tool to lock that prevents technique and violence unblanking in the world at present.

Description

Mechanical lock of double core mutual control trap type blade mechanism

technical field

The utility model relates to a lock, in particular to a mechanical lock with a double-core mutual control trap type blade mechanism.

Background technique

A kind of lockset of prior art is to adopt leaf mechanism as locking mechanism, and this lockset usually comprises lock head body, lock core, tumbler, blade and key, and tumbler is arranged between lock head body and lock cylinder, usually Both the lock head body and the lock cylinder are provided with tumbler grooves, the tumblers can only move at the tumbler grooves of the lock head body and the lock cylinder, and when not unlocked, the tumblers are at the tumbler grooves of the lock head body Groove and the tumbler groove place of lock core, lock core can not be rotated relative to the lock head body, when unlocking, tumbler falls, and the lock core of this moment just can realize unblanking with respect to the lock head body rotation. The upper part of the blade of this lock is usually provided with a V-shaped groove, and the bottom of the tumbler is provided with a pointed head. The key groove of the lock matches the protrusion at the bottom of the blade to make the blade move in the horizontal direction. , when the key groove provided on the key coincides with the password of the blade (that is, each convex body), then the grooves on all the blades in the lock cylinder just match the bottom of the tumbler, and the tumbler under the action of the spring force When the tumbler falls in place, it will not be stuck between the lock head body and the lock cylinder. In this way, the lock cylinder can rotate relative to the lock head body. At this time, if the key is turned, the key will drive the lock. The core rotates, and the deadbolt connected to the lock core also rotates at the same time, and the door lock can be opened and closed. If one or more of the key grooves on the key do not match the combination of the blades, the grooves on the blades in the lock cylinder will not match the bottom of the tumbler, the tumbler will not fall completely, and the tumbler will not be released To the clamping of the lock head body, like this, the lock core and the lock head body are connected by tumblers, and the lock core cannot rotate. Although this lock of the prior art has better safety compared with the tumbler lock, it still cannot prevent technical unlocking or violent unlocking.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a mechanical lock with a double-core mutual control trap type blade mechanism. On the one hand, by setting the front and rear lock cylinders, the rear lock cylinder is used to limit the decoding conditions of the front lock cylinder. , the front lock cylinder controls the rotation of the rear lock cylinder. On the other hand, by setting traps in the leaf mechanism of the front lock cylinder and using the cooperation of the two aspects, the difficulty of technical unlocking and violent unlocking is greatly increased, and the safety of the lockset is improved. safety.

The technical solution adopted by the utility model to solve the technical problem is: a mechanical lock of a dual-core mutual control trap type blade mechanism, including a lock head and a key; the lock head includes a lock head body, a front lock cylinder and a rear lock cylinder The front lock cylinder and the rear lock cylinder are rotatably installed in the lock head body, and the front lock mechanism and the rear lock mechanism which can be decoded by the key are respectively installed between the front lock cylinder, the rear lock cylinder and the lock head body; it is characterized in that: The front locking mechanism is a blade mechanism, which includes a tumbler and at least one blade used to match the bottom of the tumbler, the blade is provided with a combination groove and at least one trap groove; the rear lock cylinder is also equipped with a The control mechanism that controls the tumbler, the tumbler cannot fall before the rear lock cylinder is moved in place; when the key is inserted into the keyhole, the key first decodes the rear locking mechanism, and then pushes the rear lock cylinder to move axially backward to the position with the key , so that the tumbler falls, when the tumbler falls into the password groove of the blade, the front locking mechanism decodes, and the front and rear lock cylinders rotate together under the drive of the key to unlock, when the tumbler falls into the trap groove of the blade, the front lock The mechanism is not decoded and the blade cannot move.

The control mechanism is a tumbler push rod and a matching structure arranged between the tumbler push rod and the tumbler; the front lock core is provided with an axial push rod groove, and the push rod groove is used in the front lock core The second tumbler groove for loading the tumbler is connected, and the tumbler push rod is slidably installed in the push rod groove of the front lock cylinder, and is matched with the tumbler; the rear end of the tumbler push rod is connected with the tumbler The rear lock cylinder is linked together. When the rear locking mechanism is not decoded, the tumbler push rod cannot move. Before the tumbler push rod is not moved in place, the tumbler cannot fall, that is, the front lock cylinder does not have the decoding conditions.

The matching structure between the tumbler push rod and the tumbler comprises:

a chute provided on the tumbler push rod, the tumbler is slidably fitted in the chute of the tumbler push rod, and enables cross relative movement between the tumbler push rod and the tumbler;

The first protruding post provided on the tumbler and the first slope provided on the chute of the tumbler push rod, and the first shrapnel fitted on the first slope and arranged along the horizontal direction; the bottom section of the first slope is provided with There is a second protruding post, one end of the first elastic piece is fixed on the second protruding post, and the other end of the first elastic piece is freely resting on the top of the first slope.

The sum of the protruding size of the first boss and the width of the second boss of the tumbler is not greater than the width of the first slope, and the width of the first elastic piece is the same as the width of the first slope.

When the tumbler push rod does not move back to the position, the first post of the tumbler is limited by the first shrapnel so that the tumbler cannot fall. The limit of a shrapnel makes the tumbler fall; when the tumbler push rod moves forward, the first protrusion of the tumbler moves upward along the first inclined surface of the chute of the tumbler push rod, and when the tumbler push rod moves forward When moving in place, the first protruding post of the tumbler pushes away the free end of the first shrapnel and returns to the upper end of the first shrapnel.

The top of the tumbler is equipped with a pressing block, and the top of the pressing block is equipped with a first spring, and the first spring is stretched between the top of the pressing block and the lock head body.

The cross-sections of the password groove and the trap groove are rectangular, circular or trapezoidal, in a word, the cross-sectional shape in which the blade is clamped and cannot move after the tumbler head falls into the trap groove.

The mechanical lock also includes a gate mechanism arranged in front of the keyhole of the front lock cylinder, which is linked with the rear lock cylinder, and when the rear lock cylinder moves backward to the position, the gate mechanism closes the keyhole.

The gate mechanism includes an upper gate and a lower gate. Upper and lower gate push rods are arranged between the upper and lower gates and the rear lock core. One end of the upper and lower gate push rods is fixed to the rear lock core. The other end of push rod matches with described upper and lower gate respectively, and when key pushes rear lock core and upper and lower gate push rod move backward, described upper and lower gate closes key hole.

The upper gate is arranged on the front upper part of the keyhole of the lock cylinder, the upper gate is provided with a second upward inclined plane, the front end of the upper gate push rod is provided with a third downward inclined plane, and the second inclined plane of the upper gate is aligned with the upper gate push rod. The third slope of the rod cooperates to drive the upper gate to move downward when the upper gate push rod moves backward.

The lower gate is arranged at the front lower part of the key hole of the lock cylinder, the lower gate is provided with a fourth downward inclined plane, the front end of the lower gate push rod is provided with an upward fifth inclined plane, and the fourth inclined plane of the lower gate is aligned with the lower gate push rod. The fifth slope of the rod cooperates to drive the lower gate to move upward when the lower gate push rod moves backward.

When the rear lock cylinder returns to the initial position, all parts return to the initial state.

The rear locking mechanism between the rear lock core and the lock head body is a pin mechanism, and the pin mechanism is installed between the rear lock core and the lock head body in the radial direction to limit the rotation and axial movement of the rear lock core.

The rear locking mechanism between the rear lock cylinder and the lock head body is a blade mechanism, and the blade mechanism is radially installed between the rear lock cylinder and the lock head body to limit the rotation and axial movement of the rear lock cylinder.

Compared with the prior art, the main beneficial effects of the utility model are: the utility model adopts a new concept and new method of position difference for time difference, and adopts the concept of time-space conversion, which is the first in the lock industry and is in the leading position in technology status. When the rear lock cylinder is moved in place (i.e., the position difference), the front lock cylinder has the decoding condition, and the displacement of the rear lock cylinder produces a time gap (i.e., the difference in position). Several constraints were set using this time slot. Specifically, when the rear lock cylinder moves gradually, the gate at the keyhole entrance is gradually closed, and the front lock cylinder has the decoding conditions until the rear lock cylinder moves in place. At this time, the gate is closed, so that there is no channel for technical unlocking; and the front lock cylinder adopts trap type The locking mechanism of the blade makes the front lock cylinder have one and only one decoding opportunity. It can be seen that the concept of time-space conversion plus the trap-type blade structure can logically prevent technical unlocking, thereby greatly improving the safety of the lock. It is embodied in the following advantages:

1. Since the utility model adopts the structure of the front lock cylinder and the rear lock cylinder, and the front lock cylinder and the rear lock cylinder are controllable connections; the rear lock cylinder is also equipped with a control mechanism for controlling the front locking mechanism. Before the key is moved into place, the key cannot decode the front locking mechanism; when the key is inserted into the keyhole, the key first decodes the rear locking mechanism, and then pushes the rear lock cylinder with the key to move back in place axially, at this time the control mechanism Release the control of the front locking mechanism, so that the key can decode the front locking mechanism, and the front and rear lock cylinders are driven by the key to rotate together to unlock; in the dual-core mutual control structure of the utility model, the rear lock cylinder must be unlocked first , to push forward, the rear lock cylinder is hidden relatively deep, which increases the difficulty of technical unlocking, even after the rear lock cylinder is decoded, the front lock cylinder still restricts the rotation of the rear lock cylinder, only the front lock cylinder and the rear lock cylinder are decoded , the lock can be opened, preventing technical and violent unlocking.

2. Since the utility model adopts the design of the front locking mechanism as a blade mechanism, and the blade mechanism includes a tumbler and at least one blade for matching with the bottom of the tumbler, a combination slot and at least one Trap slot; when the tumbler is dropped into the combination slot of the blade, the front locking mechanism is decoded, when the tumbler is dropped into the trap slot of the blade, the front locking mechanism is not decoded and the blade cannot move. This structure makes the front lock cylinder only have one decoding chance.

3. Since the utility model adopts the tumbler push rod as the control mechanism for controlling the front locking mechanism, and through the chute on the tumbler push rod, the first slope of the chute, and the first slope that is matched on the first slope and along the horizontal The first shrapnel set in the direction is matched with the first convex post of the tumbler, which can not only realize the control of the tumbler, but also realize the return of the tumbler; thereby realizing the control of the decoding condition of the rear lock cylinder to the front lock cylinder , in the initial position, the front locking mechanism cannot be decoded, so that it is technically impossible to crack the front locking mechanism alone; only when the rear locking mechanism is decoded and the rear lock cylinder is pushed in place, the front locking mechanism has the decoding conditions.

4. Since the utility model adopts a gate mechanism at the front of the keyhole of the front lock cylinder, the gate mechanism is linked with the rear lock cylinder, and when the rear lock cylinder moves backward, the gate mechanism closes the keyhole , logically put an end to the possibility of technical unlocking.

The utility model will be described in further detail below with reference to the accompanying drawings and embodiments; however, the mechanical lock of a dual-core mutual control trap-type blade mechanism of the utility model is not limited to the embodiments.

Description of drawings

Fig. 1 is the three-dimensional structure exploded schematic view of embodiment one utility model;

Fig. 2 is a structural representation of the key not inserted in Embodiment 1 of the utility model;

Fig. 3 is a sectional view along line A-A in Fig. 2;

Fig. 4 is a sectional view along the line B-B in Fig. 2;

Fig. 5 is an enlarged schematic diagram of part Z in Fig. 2;

Fig. 6 is the cooperating schematic view of the bolt, push rod and front lock cylinder that the key of the utility model is not inserted in embodiment one;

Fig. 7 is a schematic diagram of the structure of the lock cylinder not advancing after the key is inserted in Embodiment 1 of the utility model;

Fig. 8 is a sectional view along line C-C in Fig. 7;

Fig. 9 is a cooperating schematic diagram of the tumbler, the push rod, and the front lock cylinder without the lock cylinder being advanced after the key of embodiment one utility model is inserted;

Fig. 10 is the cooperating schematic diagram (rotating an angle) of the tumbler, push rod, and front lock cylinder that the lock cylinder does not advance after the key of embodiment one utility model is inserted;

Fig. 11 is a schematic diagram of the structure of the lock cylinder not pushed into place after the key is inserted in Embodiment 1 of the utility model;

Fig. 12 is a sectional view along line D-D in Fig. 11;

Fig. 13 is a schematic diagram of cooperation of the tumbler, the push rod, and the front lock cylinder before the lock cylinder is pushed into place after the key is inserted in Embodiment 1 of the utility model;

Fig. 14 is a structural schematic diagram of the moment when the lock cylinder is pushed into place and the tumbler is not dropped after the key of embodiment one utility model is inserted;

Fig. 15 is a sectional view along line E-E in Fig. 14;

Fig. 16 is a schematic diagram of cooperation between the tumbler, the push rod and the front lock cylinder at the moment when the lock cylinder is pushed into place and the tumbler is not dropped after the key is inserted in embodiment one of the utility model;

Fig. 17 is a structural schematic diagram of the moment when the lock cylinder is pushed into place and the tumbler falls after the key is inserted in embodiment one of the utility model;

Fig. 18 is a sectional view along line F-F in Fig. 17;

Fig. 19 is a schematic diagram of cooperation between the tumbler, the push rod and the front lock cylinder at the moment when the lock cylinder is pushed into place and the tumbler falls after the key of embodiment one utility model is inserted;

Fig. 20 is a structural schematic diagram of the key returning process 1 of the utility model of embodiment 1;

Fig. 21 is a sectional view along line G-G in Fig. 20;

Fig. 22 is a schematic diagram of cooperation of the tumbler, the push rod and the front lock cylinder in the key return process one of embodiment one utility model;

Fig. 23 is a structural schematic diagram of the second key return process of the utility model in the first embodiment;

Fig. 24 is a sectional view along line H-H in Fig. 23;

Fig. 25 is a schematic diagram of cooperation of the tumbler, the push rod and the front lock cylinder in the second key return process of the utility model in the first embodiment;

Fig. 26 is a schematic diagram of the structure of the key returned to its place in Embodiment 1 of the utility model;

Fig. 27 is a sectional view along line I-I in Fig. 26;

Fig. 28 is a schematic diagram of cooperation of the bolt, the push rod, and the front lock cylinder in which the key is returned to the original position in Embodiment 1 of the utility model;

Fig. 29 is an exploded schematic view of the three-dimensional structure of the utility model according to the second embodiment.

detailed description

The front, back, up and down described in the utility model only represent the relative azimuth relationship.

Embodiment one

Referring to Fig. 1 to Fig. 28, a mechanical lock of a dual-core mutual control trap-type blade mechanism of the present invention includes a lock head and a key 10; the lock head includes a lock head body 1, a front lock cylinder 2 and a rear Lock core 3; Front lock core, rear lock core are rotatably contained in the lock head body, and rear lock core 3 can also move axially; 10 decoded front locking mechanism 5 and rear locking mechanism 4; the front locking mechanism 5 is a blade mechanism, and the blade mechanism includes a tumbler 51 and a plurality of blades 52 for matching with the protrusions 512 at the bottom of the tumbler, Blade 52 is provided with a plurality of vane grooves 521, and in a plurality of blade grooves 521, only has a blade groove 521 to be password groove, and other blade grooves 521 are trap grooves; The control mechanism 6, before the rear lock cylinder 3 is moved in place, the tumbler 51 cannot fall; when the key 10 is inserted into the keyhole, the key 10 first decodes the rear locking mechanism 4, and then uses the key 10 to push the rear lock cylinder 3 along the axial direction Move back in place to make the tumbler 51 fall. When the convex part 512 at the bottom of the tumbler falls into the combination groove of the blade 52, the front locking mechanism 5 decodes, and the front and rear lock cylinders are driven by the key 10 to rotate together to unlock. When the protrusion 512 of the tumbler bottom falls into the trap groove of the blade 52, the front locking mechanism 5 is not decoded and the blade 52 cannot move.

The rear locking mechanism 4 between the rear lock core 3 and the lock head body 1 is a pin mechanism 41, which is radially installed between the rear lock core 3 and the lock head body 1 to limit the rotation of the rear lock core and axial movement.

A first tumbler groove 11 is provided on the lock head body 1, and a second tumbler groove 21 is also arranged on the front lock cylinder 2. When the tumbler 51 is in the first tumbler groove 11 of the lock head body 1 and the front lock cylinder 2 When the second tumbler groove 21 of the front lock cylinder 2 cannot rotate relative to the lock head body 1, when the tumbler 51 leaves the first tumbler groove 11 of the lock head body 1 and completely enters the second tumbler of the front lock cylinder 2 When the groove 21 is opened, the front lock cylinder 2 can rotate relative to the lock body 1 .

The control mechanism 6 is a tumbler push rod 61 and a matching structure arranged between the tumbler push rod and the tumbler 51; the front lock core 2 is provided with an axial push rod groove 22, and the push rod groove 22 It communicates with the second tumbler groove 21 used for loading tumblers in the front lock cylinder 2, and the tumbler push rod 61 is slidably installed in the push rod groove 22 of the front lock cylinder 2, and cooperates with the tumbler 51 The rear end of the tumbler push rod 61 is linked with the rear lock cylinder 3, and can be fixed by clamping or integrally fixed, etc. When the rear locking mechanism 4 is not decoded, the tumbler push rod 61 cannot move, Before the tumbler push rod 61 is not moved into place, the tumbler 51 cannot fall.

The matching structure between the tumbler push rod 61 and the tumbler 51 includes:

Set in the chute 611 of the tumbler push rod, the tumbler 51 is slidably fitted in the chute 611 of the tumbler push rod, and enables cross relative movement between the tumbler push rod 61 and the tumbler 51;

The first protrusion 511 provided on the tumbler 51 and the first slope 612 provided on the chute 611 of the tumbler push rod, and the first elastic piece 62 fitted on the first slope and arranged in the horizontal direction; the first The bottom section of the slope 612 is provided with a second boss 613, one end of the first elastic piece 62 is fixed on the second boss 613, and the other end of the first elastic piece 62 is free to ride on the top of the first slope 612 . The function of the second protrusion 613 is to make the first elastic piece 62 horizontally arranged.

The sum of the protruding dimension of the first protruding post 511 of the tumbler 51 and the width dimension of the second protruding post 613 is not greater than the width dimension of the first inclined surface 612, and the width dimension of the first elastic piece 62 is the same as that of the first inclined surface 612. have the same width dimensions. The size fits so that the first protrusion 511 can avoid the second protrusion 613 and move along the first slope 612 .

When the tumbler push rod 61 does not move back to the position, the first protrusion 511 of the tumbler 51 is limited by the first elastic piece 62 so that the tumbler 51 cannot fall. The first protruding post 511 breaks away from the limit of the first elastic piece 62 to make the tumbler 51 fall; when the tumbler push rod 61 moves forward, the first protruding post 511 of the tumbler 51 moves along the chute 611 of the tumbler push rod. The first inclined surface 612 moves upwards, and when the tumbler push rod 61 moves forward to the position, the first protrusion 511 of the tumbler pushes away the free end of the first elastic piece 62 and returns to the upper end of the first elastic piece 62 .

A pressing block 53 is installed on the top of the tumbler 51 , and a first spring 54 is installed on the top of the pressing block 53 , and the first spring 54 stretches between the top of the pressing block 53 and the lock body 1 . During installation, be to be equipped with end cap 55 in the first tumbler groove 11 of lock head body 1, the first spring 54 Zhang pushes between the top of briquetting block 53 and the end cap 55 of lock end body 1.

The cross-sections of the password groove and the trap groove are both rectangular.

Described mechanical lock also comprises the gate mechanism 7 that is arranged on the front portion of the key hole of front lock core 2, and this gate mechanism 7 is linked with rear lock core 3, when rear lock core 3 moves backward to put in place, this gate mechanism 7 makes The keyhole is closed.

Described gate mechanism comprises upper gate 71 and lower gate 72, is provided with upper gate push rod 73, lower gate push rod 74 between upper and lower gate and rear lock core 3, and one end of upper and lower gate push rod is connected with rear lock The core 3 is fixed, and the other ends of the upper and lower gate push rods are matched with the upper and lower gates respectively. When the key 10 pushes the rear lock core 3 and the upper and lower gate push rods to move backward, the upper and lower gates The gate closes the keyhole.

The upper gate push rod 73 can be an independent part, and can also be made together with the tumbler push rod 61, which is equivalent to the extension of the tumbler push rod 61 to form the upper gate push rod 73.

The upper gate 71 is arranged on the front upper part of the key hole of the front lock cylinder 2, the upper gate 71 is provided with an upward second inclined plane 711, and the front end of the upper gate push rod 73 is provided with a downward third inclined plane 731. The second slope 711 cooperates with the third slope 731 of the upper gate push rod to drive the upper gate 71 to move downward when the upper gate push rod 73 moves backward.

Described lower gate 72 is arranged on the front lower part of the key hole of front lock cylinder 2, and lower gate 72 is provided with the fourth inclined plane 721 facing downward, and the front end of lower gate push rod 74 is provided with the fifth inclined plane 741 facing upward, and the front end of lower gate is provided with the fifth inclined plane 741 facing upward. The fourth slope 721 cooperates with the fifth slope 741 of the lower gate push rod to drive the lower gate 72 to move upward when the lower gate push rod 74 moves backward.

When the back lock cylinder 3 returned to the initial position, all parts returned to the initial state.

In the mechanical lock of a double-core mutual control trap-type blade mechanism of the present utility model, when the key 10 is not inserted into the keyhole, neither the front locking mechanism 5 nor the rear locking mechanism 4 is decoded, and the pin mechanism 41 of the rear locking mechanism 4 is stuck in the Between the rear lock core 3 and the lock head body 1, the tumbler 51 of the front locking mechanism 5 is stuck between the front lock core 2 and the lock head body 1, the tumbler push rod 61 does not move, and the first protrusion of the tumbler 51 511 is located on the first elastic piece 62, and the first elastic piece 62 prevents the tumbler 51 from falling. At this time, the gate mechanism 7 is in an open state, that is, the upper gate 71 and the lower gate 72 are respectively above and below the keyhole.

When the key 10 is inserted into the keyhole and matched with the rear locking mechanism, the pin mechanism of the rear locking mechanism 4 is unlocked. At this time, due to the effect of the front lock core 2, the rear lock core 3 can only move axially and cannot rotate. The tumbler 51 of the front locking mechanism 5 is still stuck between the front lock cylinder 2 and the lock body 1, the tumbler push rod 61 has not moved, and the first protrusion 511 of the tumbler 51 is still on the first elastic piece 62. The first elastic piece 62 prevents the tumbler 51 from falling. At this moment, the gate mechanism is still in an open state, that is, the upper gate 71 and the lower gate 72 are respectively above and below the keyhole.

When the key 10 is pushed backward, the rear lock cylinder 3 moves backward, and the rear lock cylinder 3 drives the tumbler push rod 61 to move backward, and the tumbler 51 and the tumbler push rod 61 move relatively, and the first protrusion of the tumbler 51 511 moves on the first elastic piece 62, and the first elastic piece 62 still prevents the tumbler 51 from falling. Along with moving backward of rear lock cylinder 3, by the effect of upper gate push rod 73 and lower gate push rod 74, upper gate 71, lower gate 72 move to closing direction.

When the key 10 is pushed back into place, the rear lock cylinder 3 drives the tumbler push rod 61 to move back into place, the first protruding column 511 of the tumbler 51 moves away from the first elastic piece 62, and the tumbler 51 falls. 10. When matching with the front locking mechanism 5 at the same time, the convex part 512 at the bottom of the tumbler 51 falls into the combination groove, and the tumbler 51 is completely separated from the first tumbler groove 11 of the lock head body 1, so that the front lock cylinder 2 It can rotate with the lock head body 1, and under the drive of the key 10, the front lock core 2 and the rear lock core 3 can rotate together, thereby realizing unlocking. Affected by the upper gate push rod 73 and the lower gate push rod 74, the upper gate 71 and the lower gate 72 are also closed in place. If at this time, the key 10 is not compatible with the front locking mechanism 5 (for example, in the case of abnormal unlocking, the rear lock cylinder is cracked by other tools), although the tumbler 51 can fall, the protrusion at the bottom of the tumbler 51 will 512 falls into the trap groove, the tumbler 51 has not completely disengaged from the first tumbler groove 11 of the lock body 1, the front lock cylinder 2 and the lock body 1 still cannot rotate, and the trap groove also limits the movement of the blade , thus making it impossible to crack the front locking mechanism with other tools. When the protrusion 512 at the bottom of the tumbler 51 falls into the trap groove, the blade corresponding to the tumbler 51 is limited and unable to move. Only the rear lock cylinder 3 is reset, that is, the tumbler push rod 61 is reset to reset the tumbler 51 again. Lift, when the protrusion 512 at the bottom of the tumbler 51 breaks out of the trap groove, the blade can move, so the front lock cylinder 2 can only be decoded if the correct position of the blade is known in advance and moved to the correct position.

When resetting, the key 10 withdraws, and the rear lock cylinder 3 is moved forward to reset under the action of the axial spring or the key, and driven by the forward movement of the rear lock cylinder 3, the tumbler push rod 61 also moves forward, which is equivalent to When the tumbler 51 moves backward relative to the tumbler push rod 61, the first protrusion 511 of the tumbler 51 will rise along the first slope 612, which is equivalent to lifting the tumbler 51 by the tumbler push rod 61, and the gate is closed. The effect of push rod 73 and lower gate push rod 74, upper gate 71, lower gate 72 also separate gradually. When the rear lock core 3 returned to the initial position, the first protruding column 511 of the tumbler pushed the free end of the first elastic piece 62 back to the upper end of the first elastic piece 62, and the bottom of the tumbler 51 was also at a position not matched with the blade. state; the upper gate 71 and the lower gate 72 are also in an open state.

Embodiment two

Referring to Fig. 29, a mechanical lock of a dual-core mutual control trap-type blade mechanism of the present invention is different from Embodiment 1 in that the rear locking mechanism 4 between the rear lock cylinder and the lock head body It is a blade mechanism 42, and the blade mechanism 42 is installed between the rear lock cylinder 3 and the lock head body 1 in the radial direction to limit the rotation and axial movement of the rear lock cylinder.

The above-mentioned embodiments are only used to further illustrate a mechanical lock of a dual-core mutual control trap-type blade mechanism of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications all fall within the protection scope of the technical solution of the present utility model.

Claims (14)

1. A mechanical lock of a dual-core mutual control trap type blade mechanism, comprising a lock head and a key; the lock head includes a lock head body, a front lock cylinder and a rear lock cylinder; the front lock cylinder and the rear lock cylinder are rotatably mounted In the lock body, a front locking mechanism and a rear locking mechanism that can be decoded by a key are respectively installed between the front lock core, the rear lock core and the lock body; it is characterized in that: the front locking mechanism is a blade mechanism, and the blade mechanism It includes a tumbler and at least one blade used to match the bottom of the tumbler. The blade is provided with a password groove and at least one trap groove; the rear lock cylinder is also equipped with a control mechanism for controlling the tumbler. Before moving in place, the tumbler cannot fall; when the key is inserted into the keyhole, the key first decodes the rear locking mechanism, and then uses the key to push the rear lock cylinder to move backward in place in the axial direction, so that the tumbler falls, and when the tumbler falls into the blade When the combination slot is set, the front locking mechanism is decoded, and the front and rear lock cylinders are rotated together under the drive of the key to unlock. When the tumbler falls into the trap groove of the blade, the front locking mechanism is not decoded and the blade cannot move. 2. The mechanical lock of a dual-core mutual control trap-type blade mechanism according to claim 1, characterized in that: the control mechanism is a tumbler push rod and a cooperation between the tumbler push rod and the tumbler Structure; the front lock cylinder is provided with a push rod slot along the axial direction, and the push rod slot communicates with the second tumbler slot used for loading tumblers in the front lock core, and the tumbler push rod is slidably mounted on the In the push rod groove of the front lock cylinder, and cooperate with the tumbler; the rear end of the tumbler push rod is linked with the rear lock cylinder. When the rear locking mechanism is not decoded, the tumbler push rod cannot move. The tumbler cannot fall until the tumbler push rod is in place. 3. The mechanical lock of a dual-core mutual control trap-type blade mechanism according to claim 2, wherein the cooperation structure between the tumbler push rod and the tumbler comprises: a chute provided on the tumbler push rod, the tumbler is slidably fitted in the chute of the tumbler push rod, and enables cross relative movement between the tumbler push rod and the tumbler; The first protruding post provided on the tumbler and the first slope provided on the chute of the tumbler push rod, and the first shrapnel fitted on the first slope and arranged along the horizontal direction; the bottom section of the first slope is provided with There is a second protruding post, one end of the first elastic piece is fixed on the second protruding post, and the other end of the first elastic piece is freely resting on the top of the first slope. 4. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 3, characterized in that: the sum of the protruding dimension of the first protruding post and the width dimension of the second protruding post of the tumbler Not greater than the width dimension of the first slope, the width dimension of the first elastic piece is the same as the width dimension of the first slope. 5. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 3, characterized in that: when the tumbler push rod does not move backwards to the position, the first post of the tumbler is pressed by the first shrapnel The limit of the tumbler prevents the tumbler from falling. When the tumbler push rod moves to the position, the first protrusion of the tumbler breaks away from the limit of the first shrapnel to make the tumbler fall; when the tumbler push rod moves forward, the tumbler's The first protruding post moves upward along the first inclined surface of the chute of the tumbler push rod. When the tumbler push rod moves forward to the position, the first protruding post of the tumbler pushes away the free end of the first shrapnel and returns to the first The upper end of a shrapnel. 6. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 1, characterized in that: the top of the tumbler is equipped with a pressing block, and the top of the pressing block is equipped with a first spring, the first The spring is tensioned between the top of the pressing block and the lock end body. 7 . The mechanical lock of a dual-core mutual control trap-type blade mechanism according to claim 1 , wherein the cross-sections of the combination groove and the trap groove are rectangular, circular or trapezoidal. 8. A mechanical lock with a double-core mutual control trap-type blade mechanism according to claim 1, characterized in that: the mechanical lock also includes a gate mechanism arranged in front of the keyhole of the front lock cylinder, the gate mechanism Linked with the rear lock cylinder, when the rear lock cylinder moves backward into place, the gate mechanism closes the keyhole. 9. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 8, characterized in that: the gate mechanism includes an upper gate and a lower gate, and a lock cylinder is provided between the upper and lower gates and the rear lock cylinder. There are upper and lower gate push rods, one end of the upper and lower gate push rods is fixed with the rear lock cylinder, and the other end of the upper and lower gate push rods is matched with the upper and lower gates respectively, when the key pushes the rear lock cylinder and When the upper and lower gate push rods move backward, the keyholes are closed by the upper and lower gates. 10. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 9, characterized in that: the upper gate is set at the front upper part of the keyhole of the lock cylinder, and the upper gate is provided with a second upward facing The front end of the upper gate push rod is provided with a third downward slope, and the second slope of the upper gate is matched with the third slope of the upper gate push rod to drive the upper gate to move backward when the upper gate push rod moves backward. Move down. 11. The mechanical lock of a double-core mutual control trap-type blade mechanism according to claim 9, characterized in that: the lower gate is set at the front lower part of the key hole of the lock cylinder, and the lower gate is provided with a fourth downward facing door. Slope, the front end of the lower gate push rod is provided with a fifth upward slope, and the fourth slope of the lower gate cooperates with the fifth slope of the lower gate push rod to drive the lower gate to move upward when the lower gate push rod moves backward. . 12. The mechanical lock of a dual-core mutual control trap-type blade mechanism according to claim 1, wherein when the rear lock cylinder returns to the initial position, all components return to the initial state. 13. A mechanical lock with a double-core mutual control trap-type blade mechanism according to claim 1, characterized in that: the rear locking mechanism between the rear lock cylinder and the lock head body is a pin mechanism, and the pin mechanism is along the It is radially installed between the rear lock cylinder and the lock head body to limit the rotation and axial movement of the rear lock cylinder. 14. A mechanical lock with a double-core mutual control trap-type blade mechanism according to claim 1, characterized in that: the rear locking mechanism between the rear lock cylinder and the lock head body is a blade mechanism, and the blade mechanism is along the It is radially installed between the rear lock cylinder and the lock head body to limit the rotation and axial movement of the rear lock cylinder.