CN114458102A

CN114458102A - Anti-knocking lock

Info

Publication number: CN114458102A
Application number: CN202210027356.9A
Authority: CN
Inventors: 林福运; 栾光辉
Original assignee: Xiamen Make Security Technology Co Ltd
Current assignee: Xiamen Make Security Technology Co Ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-05-10
Anticipated expiration: 2042-01-11
Also published as: CN114458102B

Abstract

The invention discloses an anti-knocking lockset, which comprises a lock shell, a bolt, a stop block, a power device, a cam, a slide bar, a first reset piece and a second reset piece, wherein the bolt, the stop block, the power device, the cam, the slide bar, the first reset piece and the second reset piece are arranged in the lock shell; the lock shell is provided with a lock hole; the middle part of the lock tongue is rotationally connected with the lock shell, and one end of the lock tongue is in telescopic fit with the lock hole; the middle part of the stop block is rotationally connected with the lock shell; the power device is in transmission connection with the cam and is used for driving the cam to rotate; the cam and the slide bar are arranged oppositely, and the slide bar moves along with the rotation of the cam; the sliding rod is in sliding fit with the lock shell and points to the lock hole, and the stop block rotates along with the movement of the sliding rod so as to realize the rotation of the limiting or abdicating bolt; the first reset piece is used for providing elastic force to enable the lock tongue to reset to an upward locking state, and one end of the lock tongue extends out of the lock hole in the locking state; the second reset piece is used for providing elasticity to enable the slide bar to reset to an up-locking state, and the slide bar drives the stop dog to limit the rotation of the lock tongue in the up-locking state. The invention has the function of anti-knocking unlocking, and simultaneously realizes the purposes of simplifying the structure and reducing the cost.

Description

Anti-knocking lock

Technical Field

The invention relates to the technical field of locks, in particular to a knock-proof lock.

Background

At present, a safe has become a common security product gradually, the safety performance of the safe is greatly related to the functions of a lockset, along with the continuous improvement of related technologies, the upgrading requirement of safe lock products is increased, and the safety performance of the products is gradually improved. The lock structure of the safe on the market has the following types:

firstly, a motor drives an eccentric wheel to rotate, so that the eccentric wheel avoids a lock tongue to realize unlocking;

secondly, the motor drives the bolt through the spring to enable the bolt to avoid the lock bolt, and therefore the lock bolt can retreat when the lock bolt is rotated to achieve unlocking.

In the two schemes, the eccentric wheel of the former is reset through the torsion spring, so that power needs to be supplied to the motor uninterruptedly during unlocking, the motor is locked, when the unlocking time is longer, the locked current of the motor is larger, the scheme consumes power, and the service life of a battery is seriously reduced; the bolt of the latter is thinner and has insufficient strength, and the bolt is driven by the spring, so that the risk of knocking unlocking exists, and the lockset needs to be additionally provided with a mechanism for preventing knocking unlocking, so that the lockset has the disadvantages of more complex structure, higher cost, more parts, and lower reliability and stability.

Disclosure of Invention

The invention aims to provide a knocking-proof lock which has a knocking-proof unlocking function and achieves the purposes of simplifying the structure and reducing the cost.

In order to achieve the above purpose, the solution of the invention is:

an anti-knocking lockset comprises a lock shell, a bolt, a stop block, a power device, a cam, a slide bar, a first reset piece and a second reset piece, wherein the bolt, the stop block, the power device, the cam, the slide bar, the first reset piece and the second reset piece are arranged in the lock shell; the lock shell is provided with a lock hole; the middle part of the lock tongue is rotatably connected with the lock shell, and one end of the lock tongue is in telescopic fit with the lock hole; the middle part of the stop block is rotatably connected with the lock shell; the power device is in transmission connection with the cam and is used for driving the cam to rotate; the cam is arranged opposite to the sliding rod, and the sliding rod moves along with the rotation of the cam; the sliding rod is in sliding fit with the lock shell and points to the lock hole, and the stop block rotates along with the movement of the sliding rod so as to limit or give way the rotation of the lock tongue; the first reset piece is used for providing elastic force to enable the lock tongue to reset to an up-locking state, and one end of the lock tongue extends out of the lock hole in the up-locking state; the second reset piece is used for providing elasticity to enable the sliding rod to reset to an upwards locked state, and the sliding rod drives the stop block to limit the rotation of the lock tongue in the locked state.

When the lockset is knocked by external force, the spring bolt and the stop block can rotate, and the spring bolt can be contacted with the stop block before the stop block reaches the unlocking position.

The lock bolt is of an eccentric structure, and when the lock bolt is subjected to the same external force, the rotational inertia of the lock bolt is larger than that of the stop block, so that the rotational angle of the lock bolt is larger than that of the stop block, and the stop block is positioned at a position for limiting the lock bolt to rotate towards the unlocking direction when the lock bolt is in contact with the stop block.

The other end of the lock tongue is provided with a first plane, one end of the stop block is provided with a second plane, and when the lockset is in a locking state, the first plane and the second plane are arranged oppositely; when the lock is knocked by external force and the lock tongue is contacted with the stop block, the edge of the second plane props against the first plane.

The center of mass of the stop block is positioned at the rotating shaft of the stop block.

One end of the stop block is provided with a movable pin, and one end of the sliding rod is radially provided with a movable groove for the movable pin to be in sliding connection and matching.

And a boss for limiting the rotation angle of the stop block is further arranged in the lock shell.

The power device is a motor, and the cam is coaxially connected to a motor shaft of the motor.

The sliding rod is provided with a baffle for matching the cam, and the cam and the second reset piece are respectively matched with two sides of the baffle.

When the lockset is in an unlocking state, the contact point of the cam and the baffle is lower than the axle center height of the cam.

The first reset piece is a spring, one end of the first reset piece is connected to the inner wall of the lock shell, and the other end of the first reset piece is connected with the other end of the lock tongue; the other end of the lock tongue is provided with a bolt for connecting the first reset piece; the second reset piece is a spring, one end of the second reset piece is sleeved at the other end of the sliding rod, and the other end of the second reset piece is abutted against the inner wall of the lock shell.

After the technical scheme is adopted, the lockset has a simple and reliable structure, the basic locking and unlocking functions of the lockset are ensured by adopting the combination of the lock tongue and the stop block, and the anti-knock unlocking is realized through the linkage relation of the cam, the slide bar and the stop block; compared with other locks, the lock can realize the same function by using fewer parts, thereby simplifying the structure, reducing the cost and improving the stability and reliability of the lock.

Drawings

FIG. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is a perspective view of a housing according to an embodiment of the present invention;

FIG. 3 is a perspective view of a cover according to an embodiment of the present invention;

fig. 4 is a perspective view of a locking bolt in accordance with an embodiment of the present invention;

FIG. 5 is a perspective view of a stop according to an embodiment of the present invention;

FIG. 6 is a perspective view of a slide bar according to an embodiment of the present invention;

FIG. 7 is a perspective view of a slide bar housing in accordance with an embodiment of the present invention;

FIG. 8 is a schematic diagram of a lock state according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of an unlocked state of the present invention;

the reference numbers illustrate:

1- -a lock housing; 1 a-a housing; 1 b-a cover;

11- -a lock hole; 12- -a boss; 13- -a locating pin;

14-a mounting cavity; 2-a tongue; 21- - -a first plane;

3- -a stop; 31 — a second plane; 32- -arc surface;

33- -a removable pin; 4-a power plant; 5- -a cam;

6- -a slide bar; 61- - -a movable slot; 62- -a baffle;

7-a first restoring member; 8-a second restoring member; 9- -a pin;

10- -a circlip; 20- -a circuit board; 30-a slide bar seat;

301- -a shaped hole; 40- -a platen; 50- -a first shaft;

60- -a second axis of rotation.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

The invention relates to an anti-knocking lockset, which comprises a lock shell 1, a bolt 2, a stop block 3, a power device 4, a cam 5, a slide bar 6, a first reset piece 7 and a second reset piece 8, wherein the bolt 2, the stop block 3, the power device, the cam 5, the slide bar 6, the first reset piece 7 and the second reset piece 8 are arranged in the lock shell 1;

the lock shell 1 is provided with a lock hole 11;

the middle part of the bolt 2 is rotationally connected with the lock shell 1, and one end of the bolt is in telescopic fit with the lock hole 11;

the middle part of the stop block 3 is rotationally connected with the lock shell 1;

the power device 4 is in transmission connection with the cam 5 and is used for driving the cam 5 to rotate;

the cam 5 is arranged opposite to the slide bar 6, and the slide bar 6 moves along with the rotation of the cam 5;

the slide bar 6 is in sliding joint with the lock shell 1 and points to the lock hole 11, and the stop block 3 rotates along with the movement of the slide bar 6 so as to realize the rotation of the limiting or abdicating bolt 2;

the first reset piece 7 is used for providing elastic force to enable the bolt 2 to reset to an up-locking state, and one end of the bolt 2 extends out of the lock hole 11 in the up-locking state;

the second reset piece 8 is used for providing elasticity to enable the sliding rod 6 to reset to an up-locking state, and the sliding rod 6 drives the stop dog 3 to limit the rotation of the bolt 2 in the up-locking state.

Through the scheme, the lockset is simple and reliable in structure, the basic locking and unlocking functions of the lockset are guaranteed by combining the lock tongue 2 and the stop block 3, and knocking-proof unlocking is realized through the linkage relation of the cam 5, the slide rod 6 and the stop block 3; compared with other locks, the lock can realize the same function by using fewer parts, thereby simplifying the structure, reducing the cost and improving the stability and reliability of the lock.

Referring to fig. 1-7, specific embodiments of the present invention are shown (directional descriptions below are with reference to the directions in fig. 8 and 9).

When the invention is knocked by external force, the bolt 2 and the stop dog 3 can rotate, and the bolt 2 can contact with the stop dog 3 before the stop dog 3 reaches the unlocking position.

Further, above-mentioned spring bolt 2 is eccentric structure, and the inertia of spring bolt 2 is greater than the inertia of dog 3 when receiving the same external force, so that the turned angle of spring bolt 2 is greater than the turned angle of dog 3, dog 3 is in the position of spacing spring bolt 2 toward the direction pivoted of unblanking when spring bolt 2 contacts with dog 3, also receive the same external force time (the process that same external force strikeed) the slew velocity of spring bolt 2 is greater than dog 3, before dog 3 rotates to the position of spring bolt 2 of stepping down, spring bolt 2 has contacted with dog 3, and continue to rotate by the restriction of dog 3, thereby the condition that the external force strikeed the unblanking takes place.

The other end of above-mentioned spring bolt 2 is provided with first plane 21, and the one end of dog 3 is provided with second plane 31, and when the tool to lock was in the state of locking, first plane 21 set up with second plane 31 is relative, and when receiving external force and strikeed or try to promote spring bolt 2 clockwise turning, first plane 21 will offset with second plane 31 (the edge) for spring bolt 2 can't further rotate, and the one end of spring bolt 2 can't retract in lockhole 11, also can't unblank.

The side edge of the stop dog 3 is provided with an arc surface 32 for the abdication bolt 2 to rotate.

One end of the stop block 3 is provided with a movable pin 33, one end of the slide bar 6 is radially provided with a movable groove 61 for the movable pin 33 to be in sliding connection and matching, and in the moving process of the slide bar 6, the movable pin 33 moves up and down in the movable groove 61 to realize that the transverse movement of the slide bar 6 can drive the stop block 3 to rotate.

The block 3 is designed such that the center of mass of the block is disposed at the position of the shaft hole of the block 3, preferably, the center of the shaft hole coincides with the center of the block, so that the center of mass of the actually produced part is closer to the center of the second rotating shaft 60, and the moment of inertia of the block 3 rotating around the rotating shaft after being knocked is minimized.

The lock shell 1 is also internally provided with a boss 12 for limiting the rotation angle of the stop dog 3, and under the action of the second reset piece 8, the slide rod 6 drives the stop dog 3, so that the other end of the stop dog 3 is supported on the boss 12, and the limit position of the stop dog 3 during anticlockwise rotation is limited.

The power device 4 is a motor, and the cam 5 is coaxially connected to a motor shaft of the motor. In this embodiment, the power device 4 adopts a speed reduction motor, and can drive the cam 5 to drive the slide rod 6 to move in place by using a small amount of power (generally less than one turn), so as to achieve the purpose of saving electricity.

The slide bar 6 is provided with a baffle plate 62 for matching the cam 5, and the cam 5 and the second reset piece 8 are respectively matched at two sides of the baffle plate 62.

Furthermore, the contact point between the cam 5 and the baffle 62 in the unlocking state is designed to be lower than the axial height of the cam 5 (i.e. the motor shaft), so that it can be ensured that the slide bar 6 will not push the cam 5 to rotate reversely under the action of the second reset member 8 to lock after power failure, but the baffle 62 on the slide bar 6 will abut against the cam 5 under the action of the second reset member 8 and make the cam 5 rotate towards the inner wall of the lock case 1 to abut against, so that the cam 5, the slide bar 6 and the stopper 3 will not move under the action of the second reset member 8 even if power failure occurs, that is, the lock can also keep the unlocking state after power failure, thereby achieving the purpose of saving power.

The first reset piece 7 is a spring, one end of which is connected to the inner wall of the lock case 1, and the other end of which is connected to the other end of the bolt 2.

Further, the other end of the bolt 2 is provided with a bolt 9 for connecting the first reset piece 7. In this embodiment, the other end of the bolt 9 inserted into the bolt 2 is fixed by the circlip 10.

The second reset member 8 is a spring, one end of which is sleeved on the other end of the slide rod 6, and the other end of which abuts against the inner wall of the lock case 1.

The invention also comprises a circuit board 20 arranged in the lock shell 1, wherein the circuit board 20 is electrically connected with the power device 4 and is used for receiving an external control signal and controlling the working state of the power device 4.

The invention also comprises a sliding rod seat 30 arranged in the lock shell 1, wherein the rod body part (the movable groove 61 and the baffle plate 62 except the end part) of the sliding rod 6 is provided with a special-shaped section, and the sliding rod seat 30 is provided with a special-shaped hole 301 matched with the special-shaped section. The slide bar seat 30 is arranged to stabilize the moving direction of the slide bar 6, and the slide bar 6 is not rotated when moving due to the matching of the bar body with the special-shaped section and the special-shaped hole 301, so that the functional stability of the slide bar 6 is ensured, and the transmission relationship between the slide bar 6 and the stop block 3 is ensured. In this embodiment, the slide rod base 30 is divided into an upper piece and a lower piece, which are clamped on the upper and lower surfaces of the slide rod 6 for convenient assembly, and two ends of the slide rod 6 are provided with one slide rod base 30.

Further, the shaft section of the slider 6 is cross-shaped.

Meanwhile, a plurality of positioning pins 13 for positioning and matching the sliding rod seat 30 are arranged in the lock shell 1, the sliding rod seat 30 is in inserting matching with the positioning pins 13 and is locked on the inner wall of the lock shell 1 through screws so as to ensure that the position of the sliding rod seat 30 is fixed.

The invention also comprises a pressure plate 40 for fixing the power device 4 to ensure the position of the power device 4 in the lock case 1 is stable, thereby ensuring the driving function of the cam 5 for the slide bar 6 to be stable.

The invention also comprises a first rotating shaft 50 and a second rotating shaft 60, wherein the first rotating shaft 50 and the second rotating shaft 60 are both arranged in the lock shell 1; the middle part of the lock shell 1 is sleeved on the first rotating shaft 50 to realize the rotating connection with the lock shell 1; the middle part of the stop block 3 is sleeved on the second rotating shaft 60, so that the stop block is rotatably connected with the lock shell 1.

The lock case 1 includes a case 1a and a cover 1 b; the shell 1a is provided with a mounting cavity 14, and the side wall of the mounting cavity 14 is provided with the lock hole 11; the cover body 1b covers the opening of the installation cavity 14, so that the lock case 1 is in a closed state. In this embodiment, the housing 1a and the cover 1b are fastened by screws to achieve detachable assembly. In addition, various structures included in the lock case 1 are provided in the mounting cavity 14.

The cam 5 and the sliding rod 6 are both formed by adopting materials with low density, such as plastics, the weights of the cam 5 and the sliding rod 6 are reduced as much as possible, so that the acting force of the cam 5 and the sliding rod 6 on a stop block when external force is knocked is reduced, and knocking unlocking is avoided.

Referring to fig. 8, the locking process of the present invention is: in an unlocking state, the motor drives the cam 5 to rotate reversely, the sliding rod 6 pushes the stop dog 3 to rotate anticlockwise under the action of the second reset piece 8 (namely, a spring), and at the moment, if the lock bolt 2 is still in the unlocking state, the stop dog 3 abuts against the lock bolt 2; after the external force pushing the bolt 2 is removed, the bolt 2 rotates anticlockwise to the locking position under the action of the pulling force of the first reset piece 7, and after the bolt 2 leaves the stop dog 3, the sliding rod 6 continues to push the stop dog 3 to rotate anticlockwise under the action of the second reset piece 8 until the stop dog 3 abuts against the boss 12. At this moment, the first plane 21 of the lock tongue 2 is opposite to the second plane 31 of the stopper 3, and when the lock tongue 2 is attempted to be pushed to rotate clockwise, the first plane 21 abuts against the second plane 31, so that the lock tongue 2 cannot rotate further, and one end of the lock tongue 2 cannot retract into the lock hole 11, i.e. cannot be unlocked.

Referring to fig. 9, the unlocking process of the present invention is: under the last lock state, the motor drives cam 5 corotation, and cam 5 supports and moves right on the baffle 62 of slide bar 6 and makes slide bar 6 overcome the elasticity of second piece 8 that resets to promote dog 3 clockwise rotation, cam 5 supports no longer rotates behind the inner wall of lock shell 1, and the position that dog 3 stopped at this moment can avoid the pivoted movement track of spring bolt 2, and the unblock is accomplished, promotes spring bolt 2 and can accomplish and unblank.

The working principle of the invention is (including various schemes for further improving functions):

the principle of anti-knock unlocking comprises the following steps:

firstly, the block 3 is designed to have a center of mass arranged at an axial hole of the block 3, preferably, the center of the axial hole is coincident with the center of the mass, so that the center of mass of an actually produced part is closer to the center of the second rotating shaft 60, the moment of inertia of the block 3 rotating around the second rotating shaft 60 after being knocked can be reduced to the maximum extent, and the moment of inertia of the block 3 is smaller than that of the bolt 2;

secondly, the cam 5 and the slide bar 6 are molded by adopting materials with small density, such as plastics, aluminum alloy and the like, so that the weight of the cam 5 and the slide bar 6 is reduced;

the bolt 2 is made of metal, and the bolt 2 is designed to be of an eccentric structure.

(II) anti-violence unlocking principle:

when trying to push the bolt 2 to unlock after locking, the first plane 21 of the bolt 2 and the second plane 31 of the block 3 are abutted, and the stress piece is: the lock bolt 2, the stop block 3, the first rotating shaft 50, the second rotating shaft 60, the shell 1a and the cover body 1b are all made of metal materials and can be designed to have enough thickness, so that the parts of the lock cannot be damaged after the lock is violently unlocked, and the lock can still be normally used.

(III) power saving principle:

when the lock is unlocked, the circuit board 20 supplies power to the motor, the motor drives the cam 5 to rotate until the cam 5 pushes the slide rod 6 to retreat and then to abut against the inner wall of the lock shell (namely the side wall of the shell 1 a), and then the power can be cut off, the contact point of the cam 5 and the baffle plate 62 on the slide rod 6 is designed to be lower than the central height of the motor shaft, so that the slide rod 6 can not push the cam 5 to rotate reversely and then be locked after the power is cut off, but the baffle plate 62 on the slide rod 6 can abut against the cam 5 under the elastic force of the second reset piece 8, the cam 5 abuts against the bottom wall of the shell 1a, so that the cam 5, the slide rod 6 and the stop block 3 can not move under the elastic force of the second reset piece 8 even if the power is cut off, the lock can be powered off, the lock can be maintained in an unlocked state, after the unlocking is maintained for a certain time, the circuit board 20 supplies power to the motor to drive the cam 5 to rotate reversely, the slide bar 6 pushes the block 3 to rotate counterclockwise under the elastic force of the second reset piece 8, and the block 3 is restored to the locked position after the bolt 2 is restored to the locked position. In conclusion, only need supply power for the motor when unblanking and shutting the lock, because the switch lock motor rotates to the round at every turn, only need a few tenths of a second can accomplish moreover, unblank to the period of shutting the lock and can not need supply power for the motor, can guarantee like this that the switch lock only needs little electric quantity of loss at every turn.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. An anti-knock lock, characterized in that:

the lock comprises a lock shell, and a bolt, a stop block, a power device, a cam, a slide bar, a first reset piece and a second reset piece which are arranged in the lock shell;

the lock shell is provided with a lock hole;

the middle part of the lock tongue is rotatably connected with the lock shell, and one end of the lock tongue is in telescopic fit with the lock hole;

the middle part of the stop block is rotatably connected with the lock shell;

the power device is in transmission connection with the cam and is used for driving the cam to rotate;

the cam is arranged opposite to the sliding rod, and the sliding rod moves along with the rotation of the cam;

the sliding rod is in sliding fit with the lock shell and points to the lock hole, and the stop block rotates along with the movement of the sliding rod so as to limit or give way the rotation of the lock tongue;

the first reset piece is used for providing elastic force to enable the lock tongue to reset to an up-locking state, and one end of the lock tongue extends out of the lock hole in the up-locking state;

the second reset piece is used for providing elasticity to enable the sliding rod to reset to an upwards locked state, and the sliding rod drives the stop block to limit the rotation of the lock tongue in the locked state.

2. The knock-resistant lock of claim 1, further comprising:

3. The anti-slap lockset of claim 2 wherein:

4. The knock-resistant lock of claim 2, further comprising:

5. The knock-resistant lock of claim 2, further comprising:

6. The knock-resistant lock of claim 1, further comprising:

7. The knock-resistant lock of claim 1, further comprising:

8. The knock-resistant lock of claim 1, further comprising:

9. The knock-resistant lock of claim 1, further comprising:

10. The knock-resistant lock of claim 9, further comprising:

11. The knock-resistant lock of claim 1, further comprising: