CN114412297A

CN114412297A - Two-lock one-open locking mechanism and locking device thereof

Info

Publication number: CN114412297A
Application number: CN202210115794.0A
Authority: CN
Inventors: 朱昱旻
Original assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Current assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-04-29
Anticipated expiration: 2042-02-07
Also published as: CN114412297B

Abstract

The invention discloses a locking mechanism with two locks and one lock and a locking device thereof. The locking mechanism comprises a locking device, a lever plate, a linkage plate, a stop block and a locking piece which are arranged on a mounting plate. The two locking devices are arranged side by side, so that the telescopic directions of the driving plates connected with the two locking devices are parallel. The two ends of the lever plate are respectively and movably connected with the driving plate, so that the locking device can drive the lever plate to swing through the driving plate. The linkage plate is arranged on the mounting plate through the sliding limiting mechanism and is connected with the lever plate, so that the lever plate can drive the linkage plate to move in the direction parallel to the stretching direction of the drive plate, and when one drive plate is fixed and the other drive plate stretches, the moving stroke of the linkage plate is half of the stretching stroke of the drive plate. The linkage plate is fixedly connected with the stop block. The stop block can be pressed against the locking piece to enter a locking state.

Description

Two-lock one-open locking mechanism and locking device thereof

Technical Field

The invention relates to a locking device, in particular to a locking device with multiple locks and multiple unlocks.

Background

There are locking devices in the lockset industry that have multiple locks and multiple unlocks. Multiple locks and multiple unlocks may in turn be represented as N locks M unlocks, where N > M. The N locks can be opened only by opening any M locks. The advantage of this kind of structure is fault-tolerant, and the damage lock can not influence the door opening in N locks. Such multi-lock, multi-open locking devices are often found in important locations such as bank vault doors. The standard of the bank vault requires that the vault door adopts a three-opening two-structure at least, namely, any two locks in the three locks can be opened, and the vault door can be opened. Patent documents CN113482456a and CN 110939323 a both describe the locking device with the above-described triple-lock double-open structure. Patent document CN 113389462 a further discloses a multi-lock two-open locking device.

In some applications, such as in a safe, the safe door employs a locking device that requires two locks and one unlock. The three-lock two-open or multi-lock two-open locking device described in patent document CN113482456A, CN 110939323A, CN 113389462 a is applicable to such a two-lock one-open locking device to some extent. For example, one locking device in the three-lock two-open mode is normally opened, which is equivalent to the two-lock one-open mode. However, the three-lock two-open or multi-lock two-open has high cost and poor stability due to more locks and complex structure.

Disclosure of Invention

The problems to be solved by the invention are as follows: a locking device with two locks and one lock is designed for some occasions, so that the door can be opened only by opening any one of the two locks, and the door can be opened even if one of the two locks is damaged or stuck.

In order to solve the problems, the invention adopts the following scheme: .

The invention has the following technical effects:

the locking mechanism comprises a locking device, a lever plate, a linkage plate, a stop block and a locking piece, wherein the locking device, the lever plate, the linkage plate, the stop block and the locking piece are arranged on a mounting plate; the locking device is connected with a telescopic driving plate; two locking devices are arranged; the two locking devices are arranged side by side, so that the extension directions of the driving plates connected with the two locking devices are parallel; the two ends of the lever plate are respectively and movably connected with the driving plate, so that the locking device can drive the lever plate to swing through the driving plate; the linkage plate is arranged on the mounting plate through a sliding limiting mechanism and is positioned between the two locking devices; the middle of the lever plate is connected with the linkage plate, so that the lever plate is driven by the driving plate to drive the linkage plate to move in the direction limited by the sliding limiting mechanism according to the direction parallel to the telescopic direction of the driving plates, and when one driving plate is fixed and the other driving plate is telescopic, the movement stroke of the linkage plate is half of the telescopic stroke of the driving plates; the linkage plate is fixedly connected with the stop block; the stop block can be abutted against the locking piece so as to enter a locking state; the stop block can move under the driving of the linkage plate, so that the stop block and the locking piece are separated from each other to enter an unlocking state.

Further, according to the locking mechanism of the invention, the sliding limiting mechanism comprises a first sliding limiting mechanism; the first sliding limiting mechanism comprises two guide blocks which are parallel to each other and are arranged oppositely and a cover plate which spans and is connected with the two guide blocks; the two guide blocks, the cover plate and the mounting plate enclose a sliding guide channel; the stop block is clamped in the sliding guide channel.

Further, according to the locking mechanism with two locks and one unlock, the lever plate is connected to one end of the linkage plate, and the stop block is connected to the other end of the linkage plate; the lever plate is provided with a wall plate vertical to the mounting plate; one end of the linkage plate, which is connected with the lever plate, is propped against the wallboard.

Further, according to the locking mechanism with two locks and one lock, the locking part is a swinging part which can rotate around the axial direction vertical to the mounting plate and comprises a first cambered surface and a second cambered surface; the first cambered surface and the second cambered surface take the axial direction as the center of a circle and have different radiuses; the two ends of the first cambered surface and the second cambered surface are respectively connected through a first step surface and a second step surface; when the locking mechanism is in a locking state, the stop block is abutted against the first step surface.

Furthermore, the locking mechanism with two locks and one lock is characterized by also comprising a limiting block arranged on the mounting plate; when the locking mechanism is in a locking state, the limiting block is abutted against the second step surface.

Further, according to the locking mechanism with two locks and one lock, an elastic ejecting block mounting hole is formed in the second step surface, and an elastic ejecting block is arranged through the elastic ejecting block mounting hole.

Further, according to the locking mechanism with two locks and one unlock, the lever plate is connected to one end of the linkage plate, and the stop block is connected to the other end of the linkage plate; the slide restraint mechanism further comprises a second slide restraint mechanism; the second sliding limiting mechanism comprises a clamping column arranged on the limiting block and a sliding hole arranged on the linkage plate; the sliding hole is a waist-shaped hole and is sleeved on the clamping column, so that the linkage plate is erected on the limiting block.

Further, the locking mechanism with two locks and one lock, which is disclosed by the invention, further comprises a lock shaft which is perpendicular to the mounting plate; the locking piece is coaxially connected with the locking shaft; the lever plate is connected to one end of the linkage plate, and the stop block is connected to the other end of the linkage plate; the slide restraint mechanism further comprises a third slide restraint mechanism; the third sliding limiting mechanism comprises a sleeve shaft hole arranged on the linkage plate; the sleeve shaft hole is a waist-shaped hole and is sleeved on the lock shaft.

The locking device comprises a box body, a lock shaft, a lock bolt plate, an installation plate and a locking mechanism, wherein the lock shaft, the lock bolt plate, the installation plate and the locking mechanism are arranged on the box body; the mounting plate is arranged in the box body to divide the box body into two cavities; the lock shaft is perpendicular to the mounting plate; the lock bolt plate is arranged in one cavity and is connected with the lock shaft through a shaft bolt transmission mechanism, so that when the lock shaft is rotated, the lock bolt plate can stretch and retract; the locking mechanism is arranged in the other cavity; the locking mechanism is the locking mechanism with two locks and one lock; the locking piece is coaxially connected with the locking shaft; when the locking piece is pressed against by the stop block, the locking piece is clamped together with the lock shaft and the lock bolt plate.

Further, according to the locking device provided by the invention, the lever plate is connected to one end of the linkage plate, and the stop block is connected to the other end of the linkage plate; the slide restraint mechanism further comprises a third slide restraint mechanism; the third sliding limiting mechanism comprises a sleeve shaft hole arranged on the linkage plate; the sleeve shaft hole is a waist-shaped hole and is sleeved on the lock shaft.

The invention has the following technical effects: in the locking device with two locks and one lock, the locking device can be opened only after any one lock is opened, so that the fault tolerance of the lock is improved.

Drawings

FIG. 1 is a schematic top view of the entire lock mechanism portion of an embodiment of the lock device of the present invention.

Fig. 2 is a schematic top view of the locking member and bearing shown in fig. 1 with the locking member and bearing hidden.

Fig. 3 is a schematic perspective view of fig. 2.

FIG. 4 is a schematic top view of the linkage plate and bearing shown in FIG. 1 with the linkage plate and bearing hidden.

Fig. 5 is a schematic perspective view of a capture member according to an embodiment of the invention.

Fig. 6 is a schematic perspective view of a lever plate according to an embodiment of the present invention.

FIG. 7 is a schematic perspective view of a linkage rod according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of the operation of the locking member, the stopper and the limiting block according to the embodiment of the invention.

In each of the above-described figures,

1 is a box body, 101 is a first cavity, 102 is a second cavity, 11 is a front panel, 13 is a mounting plate, and 14 is a fixing column;

20 is a lock shaft, 21 is a bearing, and 22 is a latch plate;

31 is a locking device, 311 is a driving plate, and 312 is a stud pendulum shaft; 32 is a linkage plate, 321 is a sleeve shaft part, 322 is a span limiting block part, 323 is a baffle connecting part, 324 is a sleeve shaft hole, 325 is a sliding hole, and 326 is a driving connecting hole; 33 is a lever plate, 331 is a pendulum shaft hole, 332 is a wall plate, and 333 is a linkage connecting hole; 34 is a stopper; 35 is a limiting block; 36 is a locking part, 361 is a first cambered surface, 362 is a second cambered surface, 363 is a first step surface, 364 is a second step surface, 365 is an elastic top block mounting hole, 369 is a lock shaft connecting hole; 37 is a stop chute mechanism, 371 is a guide block, 372 is a cover plate; 39 is a slide limiting mechanism, 391 is a first slide limiting mechanism, 392 is a second slide limiting mechanism, 393 is a third slide limiting mechanism;

u1 and U2 are the stopper back and forth movement directions;

w1 and W2 are the latch member back and forth rotation directions.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1, 2, 3, and 4 illustrate an internal structure of a lock device. The locking device is used for being installed on a door of a safe and comprises a box body 1, a lock shaft 20 arranged on the box body 1, a lock bolt plate 22, an installation plate 13 and a locking mechanism 300. The box body 1 is a square structure and is a hollow hexahedron enclosed by four surrounding plates, a front panel 11 and a back panel which are arranged in front and at back. The front plate 11 and the back plate are parallel and are connected and fixed through four fixing posts 14 at four corners. Although not illustrated, the back panel does not hinder the understanding of those skilled in the art. The mounting plate 13 is a plate-like body for mounting internal components, and is provided in the case 1 between the front plate 11 and the rear plate, and is parallel to the front plate 11 and the rear plate. The mounting plate 13 divides the internal space of the box body 1 into two cavities: a first cavity 101 between front plate 11 and mounting plate 13 and a second cavity 102 between mounting plate 13 and the back plate. The lock shaft 20 is perpendicular to the front panel 11, the back panel 12 and the mounting plate 13, vertically penetrates the mounting plate 13, is provided on the case body 1 through a bearing 21, and is used for connecting a handle grip and connecting a latch plate 22. The latch plate 22 is a plate-shaped body and is connected to the latch shaft 20 through a shaft-latch transmission mechanism provided in the first chamber 101. When the lock shaft 20 is rotated, the lock bolt plates 22 are driven to synchronously extend and retract through the transmission of the shaft bolt transmission mechanism, so that the world bars and the latches of the safe box door connected with the lock bolt plates 22 are driven to move, and the locking and unlocking operations of the safe box door are further realized. As for the lock shaft latching mechanism, patent document CN113482456A and patent document No. 202121898106X filed by the applicant on 2021, 08/13 can be referred to. The specific structure of the lock shaft bolt connecting mechanism is not the scope discussed in the invention, and the description is not repeated.

The locking mechanism 300, which is a two-lock one-open locking mechanism according to the present invention, is disposed in the second chamber 102 and is used for locking the extension and retraction of the latch plate by locking the rotation of the latch shaft 20. The locking mechanism 300 includes two capture devices 31. There are two states of the locking device and locking mechanism 300: a locked state and an unlocked state. The state of the locking mechanism 300 is equivalent to the state of the locking device. That is, when the lock mechanism 300 is in the locked state, the lock device is also in the locked state; when the locking mechanism 300 is in the unlocked state, the locking device is also in the unlocked state. The state of the locking mechanism 300 is determined by the state of the capture device 31. There are also two states of the capture device 31: a locked state and an unlocked state. The capture device 31 is an electronic lock in this embodiment, and those skilled in the art will understand that the capture device 31 may also be implemented by a permanent magnet mechanism or other electrically driven mechanism. The meaning of two locks and one unlock of the invention is that: when both the catcher 31 are in the locked state, the lock mechanism 300 is locked to be in the locked state, whereby the lock shaft 20 is locked from rotation, and the latch plate 22 is restricted from expansion and contraction; when any one of the two locking devices 31 is switched from the locked state to the unlocked state, the locking mechanism 300 is also switched from the locked state to the unlocked state, so that the lock shaft 20 is unlocked and can rotate, and the rotating lock shaft 20 drives the latch plate 22 to extend and retract, thereby driving the extension and retraction of the ground lever and the latch of the safe box door connected with the latch plate 22. The catch device 31 has a telescopic stroke when the catch device 31 is switched between the locked state and the unlocked state.

The two-lock one-open structure of the locking mechanism 300 of the present embodiment is specifically realized as follows: the locking mechanism 300 also includes a linkage plate 32, a lever plate 33, a stop 34, and a capture 36. A retractable drive plate 311 is connected to the capture device 31. When the locking device 31 is switched between the unlocking state and the locking state, the driving plate 311 is driven to stretch. The two capture devices 31 are arranged side by side, so that the extending and contracting directions of the driving plates 311 connected with the two capture devices 31 are parallel. Two ends of the lever plate 33 are respectively and movably connected with the driving plates 311 respectively connected with the two locking devices 31. When the locking device 31 is switched between the unlocking state and the locking state, the lever plate 33 is driven to swing by the extension and contraction of the driving plate 311.

Specifically, referring to fig. 6, the lever plate 33 is an elongated plate-like body, and the pendulum shaft holes 331 are provided at both ends in the longitudinal direction. The pendulum shaft hole 331 is a waist-shaped hole. The end of the lever plate 33 passes through the pendulum shaft hole 331 through the stud pendulum shaft 312 arranged on the driving plate 311 to be movably connected with the driving plate 311. The stud pendulum shaft 312 may be implemented by a bolt. The end of the lever plate 33 is clamped to the drive plate 311 by the nut of the bolt. The two capture devices 31 are located on the same side of the lever plate 33. Therefore, when one of the locking devices 31 is switched between the unlocking state and the locking state while the other locking device 31 is kept unchanged, one end of the lever plate 33 drives the lever plate 33 to swing around the stud swing shaft 312 connected to the other end of the lever plate under the driving of the driving plate 311 connected to the locking device 31 in a telescopic manner. When the two locking devices 31 are synchronously switched between the unlocking state and the locking state, the two ends of the lever plate 33 synchronously move under the driving of the extension and contraction of the driving plate 311 connected with the lever plate 33, so that the lever plate 33 can realize translation. The stroke of the lever plate 33 translation is the same as the stroke of the drive plate 311 extension and contraction.

The linkage plate 32 is disposed on the mounting plate 13 between the two capture devices 31 by a slide limiting mechanism 39. The linkage plate 32 is an elongated plate-like body, see fig. 5. The linkage plate 32 can move along the direction of the long strip of the linkage plate 32 under the limitation of the sliding limiting mechanism 39. The linkage plate 32 is connected with the lever plate 33 and fixedly connected with the stop block 34. Thus, the linkage plate 32 can be moved by the lever plate 33 in a direction defined by the sliding limiting mechanism 39 thereof when the lever plate 33 swings or translates about one end. The moving direction of the linkage plate 32 is parallel to the extending and contracting direction of the driving plate 311. That is, the driving plate 311 extends and retracts in the same direction as the slide limiting mechanism 39 limits the movement of the linkage plate 32. The moving stroke of the linkage plate 32 is related to the swinging stroke or the translation stroke of the lever plate 33. When the two locking devices 31 are synchronously switched between the unlocking state and the locking state, the moving stroke of the linkage plate 32 is the same as the translation stroke of the lever plate 33 and the extension stroke of the driving plate 311. When one of the locking devices 31 keeps the state unchanged and the other locking device 31 is switched between the unlocking state and the locking state, the moving stroke of the linkage plate 32 is half of the telescopic stroke of the driving plate 31.

The linkage plate 32 moves to synchronously drive the stop block 34 to move. When the two capture devices 31 are in the locked state, the stop 34 is located in front of the capture member 36 and abuts against the capture member 36, so as to limit the movement of the capture member 36 and further limit the rotation of the lock shaft 20, thereby enabling the lock mechanism 300 and the lock device to be in the locked state. At this point, the capture member 36, lock shaft 20 and keeper plate 22 are all locked from movement. When at least one of the two locking devices 31 is switched from the locking state to the locking state, the driving plate 311 stretches and retracts to drive the lever plate 33 to drive the linkage plate 32 and the stopper 34 to move, so that the stopper 34 is separated from the locking member 36, and when the stopper 34 is separated from the locking member 36, the stopper 34 cannot limit the movement of the locking member 36, so that the rotation of the lock shaft 20 cannot be limited, which is the unlocking state of the locking mechanism 300 and the locking device.

In this embodiment, the locking member 36 is a swinging member that is rotatable about an axis perpendicular to the mounting plate 13. Specifically, referring to fig. 5, the locking member 36 is a plate-shaped body provided with a locking shaft connection hole 369, and is connected to the locking shaft 20 through the locking shaft connection hole 369. The capture member 36 is disposed on the lock shaft 20 and is fixedly coupled to the lock shaft 20 such that when the lock shaft 20 is rotated, the capture member 36 can rotate synchronously with the lock shaft 20. The capture member 36 includes a first arc 361 and a second arc 362. The first arc 361 and the second arc 362 are centered on the axial direction and have different radii. Specifically, the first arc surface 361 and the second arc surface 362 are centered around the axis of the lock shaft 20, and the radius of the first arc surface 361 is larger than that of the second arc surface 362, so that the first arc surface 361 and the second arc surface 362 are connected by a step surface, that is, two ends of the first arc surface 361 and the second arc surface 362 are connected by a first step surface 363 and a second step surface 364, respectively. Wherein the first step face 363 cooperates with the stop 34. The first step face 363 can abut against the stopper 34.

Referring to fig. 8, specifically, when the blocking piece 34 moves along with the linkage plate 32, the moving direction of the blocking piece 34 is the radial direction of the lock shaft 20. Referring to the direction indicated by the arrow U2 in fig. 8, when the stopper 34 moves toward the axial center of the lock shaft 20, the distance between the stopper 34 and the axial center of the lock shaft 20 is smaller than the radius of the first arc surface 361, and the stopper 34 can abut against the first step surface 363 of the lock member 36. Referring to the direction of arrow U1 in fig. 8, when the stopper 34 moves away from the axis of the lock shaft 20, the distance between the stopper 34 and the axis of the lock shaft 20 exceeds the radius of the first arc 361, and referring to the position of the stopper 34 shown by the dotted line in fig. 8, the stopper 34 and the lock position member 36 are disengaged.

To strengthen the physical strength of the stopper 34 against the lock member 36, in the present embodiment, the stopper 34 is disposed on the mounting plate 13 via a stopper link mechanism 37. The stopper slide groove mechanism 37 includes a guide block 371 and a cover plate 372. The guide blocks 371 are provided on the mounting plate 13, and there are two. The two guide blocks 371 are arranged parallel to each other and opposite to each other so that a groove for receiving the stopper 34 is left between the two guide blocks 371. The cover plate 372 spans the two guide blocks 371 and connects the two guide blocks 371. Thus, the two guide blocks 371, the cover plate 372 and the mounting plate 13 enclose a sliding guide passage. The stopper 34 is caught in the slide guide passage and can move in a direction defined by the slide guide passage. The direction of movement of the slide guide channel defining stop 34 is the same as the direction of movement of the linkage plate 32 defined by the slide defining mechanism 39 and is located radially of the lock shaft 20.

In addition, in this embodiment, a limiting block 35 is further included. The stopper 35 is used for stopping rotation of the lock shaft 20, is disposed on the mounting plate 13, is opposite to the stopper 34, and is symmetrical to the stopper 34 with the axis of the lock shaft 20 as a center. The stop block 35 stops the lock shaft 20 by stopping the lock member 36. Referring to the direction of arrow W2 in fig. 8, when the locking member 36 and the lock shaft 20 rotate in the door locking direction, the stop piece 35 can abut against the second step surface 364. Therefore, when the locking mechanism 300 and the locking device are in the locked state, the stopper 35 abuts against the second step surface 364, and at this time, the locking member 36 is stopped from rotating by the stopper 35 and the stopper 34. Referring to the direction of arrow W1 in fig. 8, when the locking member 36 and the lock shaft 20 rotate in the door opening direction, the stop block 35 can abut against the first step surface 363. In addition, in the present embodiment, the second step surface 364 is provided with an elastic top block mounting hole 365, and an elastic top block is provided through the elastic top block mounting hole 365. Thus, when the second step surface 364 contacts the stopper 35, the elastic top piece can absorb the shock.

Referring to fig. 7, in the present embodiment, the linkage plate 32 is a strip-shaped plate. The linkage plate 32 is divided into three sections: the sleeve shaft portion 321, the step stopper portion 322, and the shutter connecting portion 323. The plate body of the sleeve shaft portion 321 is wide and is located between the step stopper portion 322 and the baffle plate connecting portion 323. The baffle plate connecting portion 323 is provided with a fixing hole for fixedly connecting with the stopper 34, and is fixedly connected with the stopper 34 through a bolt provided on the fixing hole. A driving connection hole 326 for connecting with the lever plate 33 is provided across the end of the stopper portion 322, and is movably connected with the lever plate 33 through the driving connection hole 326. The lever plate 33 and the stopper 34 are respectively connected to two ends of the linkage plate 32, that is, the lever plate 33 is connected to one end of the linkage plate 32, and the stopper 34 is connected to the other end of the linkage plate 32.

In this embodiment, the linkage plate 32 is disposed across the lock shaft 20 and the limiting block 35. Specifically, the sleeve shaft portion 321 of the linkage plate 32 with a wider plate body width is provided with a sleeve shaft hole 324. The sleeve hole 324 is a kidney-shaped hole and is sleeved on the lock shaft 20. The span stopper part 322 of the linkage plate 32 is spanned above the stopper 35. The limiting block 35 is provided with a clamping column 351. The span limiting block part 322 of the linkage plate 32 is provided with a sliding hole 325. The sliding hole 325 is a waist-shaped hole and is sleeved on the clamping column 351, so that the cross limiting block part 322 of the linkage plate 32 is erected on the limiting block 35.

In this embodiment, the aforementioned slide limiting mechanism 39 for limiting the moving direction of the linkage plate 32 includes a first slide limiting mechanism 391, a second limiting mechanism 392, and a third limiting mechanism 393. The first sliding limiting mechanism 391 is the aforementioned stopper sliding slot mechanism 37. That is, linkage plate 32 is slidably retained within linkage plate 32 by engagement of a fixedly attached stop 34 with a stop slide mechanism 37. The second limiting mechanism 392 is realized by the cooperation of the clamping column 351 arranged on the limiting block 35 and the sliding hole 325 arranged on the linkage plate 32, and the movement direction of the linkage plate 32 is limited by the sliding cooperation of the clamping column 351 and the sliding hole 325. The third limiting mechanism 393 is realized by matching the sleeve shaft hole 324 arranged on the sleeve shaft part 321 of the linkage plate 32 with the lock shaft 20, and the limitation of the moving direction of the linkage plate 32 is realized by the sliding fit of the lock shaft 20 and the sleeve shaft hole 324.

In addition, in the embodiment, when the linkage plate 32 is connected to the lever plate 33 through the driving connection hole 326, the linkage plate is easy to fall off. For this, in this embodiment, referring to fig. 6, the lever plate 33 is provided with a wall plate 332 perpendicular to the plate surface of the lever plate 33, and a linkage connection hole 333 for connecting the linkage plate 32. Here, since the lever plate 33 is parallel to the mounting plate 13, the wall plate 33 here is also perpendicular to the mounting plate 13. The linkage plate 32 is connected with the lever plate 33 through a shaft pin arranged on the driving connection hole 326 and the linkage connection hole 333, and one end of the linkage plate 32 connected with the lever plate 33 is pressed against the wall plate 332. Therefore, when the shaft pins connecting the driving connection holes 326 and the linkage connection holes 333 fall off, the linkage plate 32 can be pushed by the wall plate 332 to move, and the unlocking operation is completed.

In addition, it should be noted that the lock position member 36 of the two-lock one-open lock mechanism 300 in this embodiment is a swinging member capable of rotating around an axis perpendicular to the mounting plate 13. Those skilled in the art will appreciate that the capture member 36 may also be a slide member disposed on the mounting plate 13 and capable of sliding on the mounting plate 13 in certain configurations. For example, when the locking member 36 is a telescopic member similar to the keeper plate 22, the stop 35 can also lock the lock shaft 20 when it abuts against the telescopic member.

Claims

1. A locking mechanism with two locks and one unlock is characterized by comprising a locking device, a lever plate, a linkage plate, a stop block and a locking piece, wherein the locking device, the lever plate, the linkage plate, the stop block and the locking piece are arranged on a mounting plate; the locking device is connected with a telescopic driving plate; two locking devices are arranged; the two locking devices are arranged side by side, so that the extension directions of the driving plates connected with the two locking devices are parallel; the two ends of the lever plate are respectively and movably connected with the driving plate, so that the locking device can drive the lever plate to swing through the driving plate; the linkage plate is arranged on the mounting plate through a sliding limiting mechanism and is positioned between the two locking devices; the middle of the lever plate is connected with the linkage plate, so that the lever plate is driven by the driving plate to drive the linkage plate to move in the direction limited by the sliding limiting mechanism according to the direction parallel to the telescopic direction of the driving plates, and when one driving plate is fixed and the other driving plate is telescopic, the movement stroke of the linkage plate is half of the telescopic stroke of the driving plates; the linkage plate is fixedly connected with the stop block; the stop block can be abutted against the locking piece so as to enter a locking state; the stop block can move under the driving of the linkage plate, so that the stop block and the locking piece are separated from each other to enter an unlocking state.

2. The two-lock one-open locking mechanism of claim 1, wherein the slide limiting mechanism comprises a first slide limiting mechanism; the first sliding limiting mechanism comprises two guide blocks which are parallel to each other and are arranged oppositely and a cover plate which spans and is connected with the two guide blocks; the two guide blocks, the cover plate and the mounting plate enclose a sliding guide channel; the stop block is clamped in the sliding guide channel.

3. The two-lock one-open locking mechanism according to claim 1, wherein the lever plate is connected to one end of the linkage plate, and the stopper is connected to the other end of the linkage plate; the lever plate is provided with a wall plate vertical to the mounting plate; one end of the linkage plate, which is connected with the lever plate, is propped against the wallboard.

4. A two-lock one-open locking mechanism as claimed in claim 1, 2 or 3 wherein the capture member is a swinging member rotatable about an axis perpendicular to the mounting plate and comprising a first curved surface and a second curved surface; the first cambered surface and the second cambered surface take the axial direction as the center of a circle and have different radiuses; the two ends of the first cambered surface and the second cambered surface are respectively connected through a first step surface and a second step surface; when the locking mechanism is in a locking state, the stop block is abutted against the first step surface.

5. The two-lock one-open locking mechanism of claim 4, further comprising a stop block disposed on the mounting plate; when the locking mechanism is in a locking state, the limiting block is abutted against the second step surface.

6. The lock mechanism of claim 5, wherein the second step surface is provided with an elastic top block mounting hole, and an elastic top block is provided through the elastic top block mounting hole.

7. The two-lock one-open locking mechanism according to claim 5, wherein the lever plate is connected to one end of the linkage plate, and the stopper is connected to the other end of the linkage plate; the slide restraint mechanism further comprises a second slide restraint mechanism; the second sliding limiting mechanism comprises a clamping column arranged on the limiting block and a sliding hole arranged on the linkage plate; the sliding hole is a waist-shaped hole and is sleeved on the clamping column, so that the linkage plate is erected on the limiting block.

8. The two-lock one-open locking mechanism of claim 4, further comprising a lock shaft perpendicular to the mounting plate; the locking piece is coaxially connected with the locking shaft; the lever plate is connected to one end of the linkage plate, and the stop block is connected to the other end of the linkage plate; the slide restraint mechanism further comprises a third slide restraint mechanism; the third sliding limiting mechanism comprises a sleeve shaft hole arranged on the linkage plate; the sleeve shaft hole is a waist-shaped hole and is sleeved on the lock shaft.

9. A locking device is characterized by comprising a box body, a lock shaft, a lock bolt plate, an installation plate and a locking mechanism, wherein the lock shaft, the lock bolt plate, the installation plate and the locking mechanism are arranged on the box body; the mounting plate is arranged in the box body to divide the box body into two cavities; the lock shaft is perpendicular to the mounting plate; the lock bolt plate is arranged in one cavity and is connected with the lock shaft through a shaft bolt transmission mechanism, so that when the lock shaft is rotated, the lock bolt plate can stretch and retract; the locking mechanism is arranged in the other cavity; the locking mechanism is the locking mechanism of two locks and one unlock as claimed in claim 4 or 5 or 6 or 7; the locking piece is coaxially connected with the locking shaft; when the locking piece is pressed against by the stop block, the locking piece is clamped together with the lock shaft and the lock bolt plate.

10. The locking device of claim 9, wherein said lever plate is connected to one end of said linkage plate and said stop is connected to the other end of said linkage plate; the slide restraint mechanism further comprises a third slide restraint mechanism; the third sliding limiting mechanism comprises a sleeve shaft hole arranged on the linkage plate; the sleeve shaft hole is a waist-shaped hole and is sleeved on the lock shaft.