CN215949177U

CN215949177U - Safety lock and equipment with lock

Info

Publication number: CN215949177U
Application number: CN202121532080.7U
Authority: CN
Inventors: 龚章平
Original assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Current assignee: Dongwu Shian Iot Technology Jiangsu Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-03-04
Anticipated expiration: 2031-07-07

Abstract

The application discloses safety lock, area lock equipment for solve the technical problem that the tool to lock security performance is low. Wherein, a safety lock includes: the device comprises a substrate, three locks, a linkage mechanism, a driving mechanism and a relocking mechanism, wherein the driving mechanism is connected with the linkage mechanism, and the relocking mechanism is connected with the linkage mechanism; the three locks and the driving mechanism are respectively arranged on the substrate; the linkage mechanism is movably arranged on the substrate; the lock tongues of the three locks are separated from or connected with the linkage mechanism in a matching mode. The safety lock is provided with a linkage mechanism to realize the locking state and the unlocking state of the safety lock; the three locks are arranged to realize the first locking of the locking state of the safety lock; and the second locking of the locking state of the safety lock is realized by arranging the relocking mechanism. The anti-theft function of the safety lock is added, and the safety performance of the safety lock is improved.

Description

Safety lock and equipment with lock

Technical Field

The application relates to the technical field of safety equipment, in particular to a safety lock and a locking device.

Background

The lockset is widely applied in daily life and can provide protection for warehouse protection areas in industries such as banks, stock exchanges, gold stores and the like.

In the process of realizing the prior art, the inventor finds that:

the anti-theft function of the lockset in the prior art is lower. The lock may be broken by bumping or prying. After the lockset is damaged, the lockset can be freely opened without multiple protections, and the safety performance is low.

Therefore, it is necessary to provide a new safety lock and a device with a lock to solve the technical problem of low safety performance of the lock.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a safety lock, area lock equipment for solve the low technical problem of tool to lock security performance.

The safety lock comprises a base plate, three locks, a linkage mechanism, a driving mechanism and a re-locking mechanism, wherein the driving mechanism is connected with the linkage mechanism, and the re-locking mechanism is connected with the linkage mechanism;

the three locks and the driving mechanism are respectively arranged on the substrate; the linkage mechanism is movably arranged on the substrate;

the lock tongues of the three locks are separated from or connected with the linkage mechanism in a matching mode;

when the lock tongues of the three locks extend, the linkage mechanism is prohibited from moving;

when the bolt of any one of the three locks retracts, allowing the linkage mechanism to complete partial stroke;

when the lock tongues of any two of the three locks retract, the linkage mechanism is allowed to complete the full stroke.

Further, the linkage mechanism comprises a movable plate and three limiting parts connected with the movable plate, the movable plate and the three limiting parts are respectively movably arranged on the substrate, and the movable plate is connected with the movable plate;

when any two locks in the three locks are unlocked, the driving mechanism can drive two limiting parts in the three limiting parts to finish the backspacing stroke.

Further, the linkage mechanism further comprises a first connecting rod and a second connecting rod;

the middle part of the first connecting rod is provided with a first inflection point, and the first connecting rod is connected with the movable plate through the first inflection point;

the middle part of the second connecting rod is provided with a second inflection point, and the second connecting rod is connected with one end of the first connecting rod through the second inflection point;

one end of one of the three limiting parts is connected with a limiting hole formed in the other end of the first connecting rod, and one ends of the other two limiting parts are connected with limiting holes formed in two ends of the second connecting rod respectively.

Furthermore, a side wing extending outwards is arranged on one side of each of the three limiting parts, and the height of the side wing is higher than the height of the bottom surface of the lock tongue of any one of the three locks and the height of the bottom surface of the lock tongue of the relocking mechanism;

when the lock tongue of any one of the three locks extends out, the side wing of the corresponding one of the three limiting pieces can be abutted against the extending lock tongue;

when the relocking lock tongue of the relocking mechanism extends out, the side wing of the corresponding one of the three limiting parts can be abutted against the extended relocking lock tongue.

Further, the safety lock further comprises:

pressing a sheet and a pin shaft;

the pressing sheet is connected to the base plate through the pin shaft and is opposite to the lock tongues of the three locks;

the three limiting parts are sleeved on the pin shaft through guide holes arranged on the three limiting parts, and the limiting parts are located between the pressing sheet and the substrate.

Further, the driving mechanism includes:

the rack is arranged on the movable plate;

a rotating shaft mounted on the substrate;

a gear rotating integrally with the rotating shaft and engaged with the rack;

when the rotating shaft is rotated, the rack drives the movable plate to move relative to the substrate.

Furthermore, two opposite guide long round holes inclined in the length direction are formed in the movable plate;

the safety lock also comprises two groups of protection assemblies, wherein each protection assembly comprises a protection limiting movable part and a protection limiting block;

one end of the protection limiting movable part is connected to the movable plate, and the other end of the protection limiting movable part is connected into the guide long circular hole;

the protection limiting block is arranged on the substrate and provided with a limiting bulge;

one tail end of the guide long circular hole corresponds to the limiting surface of the limiting protrusion, and the other tail end of the guide long circular hole is outwards far away from the limiting surface.

Furthermore, the protection limiting block comprises a protection limiting fixed part, a protection pin body, a protection elastic part and a plugging part;

the protective limiting fixed piece is provided with a first through hole, and the plugging piece is provided with a second through hole;

the plugging piece is plugged at one end of the first through hole;

one end of the protection pin body penetrates through one end of the first through hole, the other end of the protection pin body penetrates through the second through hole, and the protection elastic piece is blocked in the first through hole by the blocking piece;

the protection pin body contacts and supports the protection limiting moving part.

Furthermore, an inward first annular shoulder is arranged at the top of the first through hole, and an outward second annular shoulder is arranged on the protection pin body;

the inner diameter of the first annular shoulder is equal to the inner diameter of the second through hole, such as the diameter of the protection pin body;

the outer diameter of the protective elastic member is equal to the inner diameter of the first through hole.

Further, the relocking mechanism includes:

a protector that protects the three locks;

a relocking bolt assembly restrained by a guard;

a relocking bolt positioning part which is arranged on the base plate and is matched and connected with the relocking bolt component;

one end of the relocking bolt assembly is connected with the linkage mechanism, and the other end of the relocking bolt assembly is selectively connected with the relocking bolt positioning part;

when the protection member is damaged, the re-locking bolt assembly secondarily locks the linkage mechanism.

Further, the protection member is a baffle plate for covering the three locks;

the relocking bolt assembly comprises an elastic piece and a relocking bolt driven by the elastic piece, and the baffle plate limits the elastic piece to drive the relocking bolt.

Further, the baffle is made of a fragmenting material.

The embodiment of the application also provides a locking device.

Concretely, a locking device includes foretell safety lock.

The technical scheme provided by the embodiment of the application at least has the following beneficial effects:

through setting up heavy locking mechanical system, realize the secondary locking to the tool to lock. The anti-theft function of the lockset is added, and the safety performance of the lockset is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a safety lock according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a movable plate according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a driving mechanism according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a linkage mechanism according to an embodiment of the present application.

Fig. 5 is a schematic view of an installation structure of a pressing sheet according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of three locks and a linkage mechanism coupled together according to an embodiment of the present application.

Fig. 7 is a schematic view of an installation structure of a relocking mechanism provided in an embodiment of the present application.

Fig. 8 is a schematic view of another installation structure of the relocking mechanism provided in the embodiment of the present application.

Fig. 9 is a schematic structural diagram of a protection limiting block according to an embodiment of the present application.

100 safety lock

11 substrate

12 linkage mechanism

121 stopper

122 first link

123 second connecting rod

124 movable plate

13 Lock

14 drive mechanism

141 rack

142 rotating shaft

143 Gear

15-fold locking mechanism

151 protective element

152 relocking latch bolt assembly

1521 elastic component

1522 locking bolt

153 relocking bolt location portion

16 tablet

17 limiting block

171 limit fixed part

172 pin body

173 elastic member

174 closure

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the present application discloses a safety lock, where the safety lock 100 includes a substrate 11, a linkage mechanism 12, three locks 13, a driving mechanism 14 and a relocking mechanism 15, the driving mechanism 14 is connected to the linkage mechanism 12, and the relocking mechanism 15 is connected to the linkage mechanism 12;

the three locks 13 and the driving mechanism 14 are respectively arranged on the substrate 11; the linkage mechanism 12 is movably arranged on the substrate 11;

the locking tongues of the three locks 13 are separate from or coupled to the linkage mechanism 12.

It will be appreciated that the base plate 11 serves as a mounting component of the security lock 100, providing a mounting location. The base plate 11 is provided with a link mechanism 12, three locks 13, a drive mechanism 14, and a relock mechanism 15.

Specifically, on the substrate 11, three locks 13 are respectively coupled with or separated from the linkage mechanism 12; the relocking mechanism 15 is matched and connected with or separated from the linkage mechanism 12; the linkage mechanism 12 is coupled to the driving mechanism 14, and is driven by the driving mechanism 14 to move relative to the substrate 11.

Wherein the linkage 12 moves relative to the substrate 11. When the linkage 12 extends relative to the base plate 11, the security lock 100 is in a locked state. When the linkage 12 is retracted relative to the base 11, the security lock 100 is in an unlocked state.

In one embodiment provided herein, the linkage 12 includes a movable plate 124.

Referring to fig. 2, a plurality of locking tongues are disposed on one side of the movable plate 124. The movable plate 124 can slide relative to the base plate 11, so as to realize a first matching state and a second matching state of the linkage mechanism 12 and the base plate 11. In the first engagement state, the movable plate 124 slides along the first direction to drive at least a portion of the plurality of bolts to extend out relative to the base plate 11, and the security lock 100 is in the locked state. In the second engagement state, the movable plate 124 slides along a second direction different from the first direction, at least a portion of the plurality of locking tongues extending from the base plate 11 retracts, and the security lock 100 is in the unlocked state.

Referring to fig. 3, in order to support the movable plate 124 to slide relative to the substrate 11, the driving mechanism 14 includes:

a rack 141 provided to the movable plate 124;

a rotating shaft 142 mounted on the substrate 11;

a gear 143 integrally rotated with the rotation shaft 142 and engaged with the rack 141;

when the rotating shaft 142 is rotated, the rack 141 drives the movable plate 124 to move relative to the substrate 11.

It can be understood that, when the rotating shaft 142 is rotated in the first circumferential direction by an external force, the gear 143, which is integrally rotated with the rotating shaft 142 and engaged with the rack 141, drives the rack 141 to move in the first direction. When the rack 141 moves along the first direction, the movable plate 124 is driven to move along the first direction, at least a portion of the plurality of bolts disposed on one side of the movable plate 124 extends out relative to the base plate 11, and the security lock 100 is in a locked state.

When the rotating shaft 142 is rotated in a second circumferential direction opposite to the first circumferential direction by an external force, the gear 143, which is integrally rotated with the rotating shaft 142 and engaged with the rack 141, drives the rack 141 to move in the second circumferential direction opposite to the first circumferential direction. When the rack 141 moves along the second direction, the movable plate 124 is driven to move along the second direction, at least a portion of the plurality of bolts extending from the base plate 11 retracts, and the security lock 100 is in an unlocked state.

Further, in order to support the first re-limiting of the linkage mechanism 12, three locks 13 coupled to or separated from the linkage mechanism 12 are disposed on the substrate 11, and are used for limiting or releasing the limitation on the movement of the linkage mechanism 12.

Referring to fig. 4, the linkage 12 further includes:

three stoppers 121 disposed on the substrate 11 and respectively corresponding to the three locks 13;

a first link 122 having one end connected to a first one of the three limiting members 121 and the other end connected to a second one of the three limiting members;

a second connecting rod 123 having one end connected to a third one of the three limiting members 121 and the other end connected to the first connecting rod 122;

the second link 123 is connected to the movable plate 124.

It will be appreciated that the three locks 13 are used for the first definition of the linkage 12. When the three locks 13 are locked, the lock tongues of the three locks 13 are coupled to the corresponding three stoppers 121 to limit the movement of the linkage mechanism 12. When the movement of the linkage mechanism 12 is limited, at least a portion of the locking tongues extending from the movable plate 124 relative to the base plate 11 cannot be retracted, and the security lock 100 is in a locked state.

Further, in order to support the three locks 13 to limit the movement of the linkage mechanism 12, in a specific embodiment provided in the present application, one side of the three limiting members 121 is provided with a wing extending outward, and the height of the wing is higher than the height of the bottom surface of the lock tongue of any one of the three locks 13. When the lock tongue of any one of the three locks 13 extends, the side wing of the corresponding one of the three limiting members 121 can abut against the extended lock tongue. Therefore, the connection between the lock tongues of the three locks 13 and the corresponding three limiting members 121 is realized, and the corresponding three limiting members 121 are limited to move back.

Referring to fig. 5, in order to avoid the failure of the three position-limiting members 121 during the use process, in another embodiment provided in the present application, the safety lock 100 further includes:

a pressing sheet 16 and a pin shaft;

the pressing sheet 16 is connected to the base plate 11 through the pin shaft and is opposite to the lock tongues of the three locks 13;

the three limiting members 121 are sleeved on the pin shaft through guide holes arranged on the three limiting members 121, and the limiting members 121 are located between the pressing sheet 16 and the substrate 11.

Specifically, the number of the pin shafts is three, and the three pin shafts are respectively and fixedly arranged on the substrate 11. The pressing sheet 16 is also provided with three corresponding to the three limiting members 121. The first limiting piece is sleeved on the first pin shaft through a guide hole arranged on the first limiting piece; one end of the first pin shaft, which is far away from the substrate 11, is fixedly connected with the first pressing sheet, so that the first limiting piece is positioned between the first pressing sheet and the substrate 11. The second limiting piece is sleeved on the second pin shaft through a guide hole arranged on the second limiting piece; one end of the second pin shaft, which is far away from the substrate 11, is fixedly connected with the second pressing sheet, so that the second limiting piece is positioned between the second pressing sheet and the substrate 11. The third limiting piece is sleeved on the third pin shaft through a guide hole arranged on the third limiting piece; and one end of the third pin shaft, which is far away from the substrate 11, is fixedly connected with a third pressing sheet, so that a third limiting piece is positioned between the third pressing sheet and the substrate 11.

In this case, the first pressing piece is disposed to prevent the first stopper from tilting on the substrate 11, the second pressing piece is disposed to prevent the second stopper from tilting on the substrate 11, and the third pressing piece is disposed to prevent the third stopper from tilting on the substrate 11. In addition, in order to avoid the rotation of the first pressing plate relative to the first limiting member, a plurality of first pin shafts can be arranged; in order to avoid the second pressing piece rotating relative to the second limiting piece, a plurality of second pin shafts can be arranged; in order to avoid the third pressing plate rotating relative to the third limiting member, a plurality of third pins may be provided.

It should be noted that, in an embodiment provided in the present application, two ends of the first connecting rod 122 are respectively connected to a first limiting member and a second limiting member of the three limiting members 121;

one end of the second connecting rod 123 is connected to a third limiting member of the three limiting members 121, and the other end is connected to the first connecting rod 122;

the middle part of the first connecting rod is provided with a first inflection point, and the middle part of the second connecting rod is provided with a second inflection point;

the second connecting rod is connected with the first connecting rod through the first inflection point;

the movable plate is connected with the second connecting rod through the second inflection point.

Referring to fig. 6, such a connection structure enables any two of the three locks 13 to be in an unlocked state, so that the motion limitation on the linkage mechanism 12 can be removed, the intelligence of the security lock 100 is improved, and unlocking is more convenient and flexible.

In particular, there are three states for the three locks 13. In the first state, the lock tongues of the three locks 13 all extend out and are matched with the corresponding three limiting members 121, so as to limit the corresponding three limiting members 121 to move back, limit the first connecting rod 122 and the second connecting rod 123 to move, limit the movable plate 124 to move back relative to the base plate 11, prevent the plurality of lock tongues extending out of the movable plate 124 relative to the base plate 11 from moving back, and enable the safety lock 100 to be in the locked state.

In the second state of the three locks 13, two of the three locks 13 are coupled with two of the three corresponding limiting members 121, one of the three corresponding limiting members 121 is allowed to retract, the first connecting rod 122 or the second connecting rod 123 is allowed to complete a partial retraction stroke, the movable plate 124 is allowed to complete a partial retraction stroke relative to the base plate 11, at least one of the plurality of lock tongues extending from the movable plate 124 relative to the base plate 11 cannot retract, and the safety lock 100 is in the locked state.

In the third state of the three locks 13, two of the three locks 13 are separated from two of the three corresponding limiting members 121, two of the three corresponding limiting members 121 are allowed to retract, the first connecting rod 122 or the second connecting rod 123 is allowed to complete a full retraction stroke, the movable plate 124 is allowed to complete a partial retraction stroke relative to the base plate 11, the movable plate 124 completes a full retraction stroke relative to the plurality of extended lock tongues of the base plate 11, and the safety lock 100 is in an unlocked state.

Considering that there are situations where the three locks 13 are broken when the security lock 100 is in the unlocked state, the security lock 100 is also provided with a relocking mechanism 15. The relocking mechanism 15 is disposed on the substrate 11, and is coupled to the linkage mechanism 12, so as to perform secondary limiting on the linkage mechanism 12 when the three locks 13 are damaged.

In one embodiment provided herein, the relocking mechanism 15 includes:

a protector 151 that protects the three locks 13;

a relocking latch bolt assembly 152 restrained by a guard 151;

a relock tongue positioning portion 153 provided on the base plate 11 and coupled to the relock tongue assembly 152;

when the guard 151 is broken, the relocking latch bolt assembly 152 secondarily locks the linkage 12.

Specifically, the protection member 151 is a barrier for covering the three locks 13, that is, the protection member 151 is disposed between the three locks 13 and the substrate 11. The relocking latch bolt assembly 152 comprises an elastic member 1521 and a relocking latch bolt 1522 driven by the elastic member 1521, and the baffle plate limits the elastic member 1521 from driving the relocking latch bolt 1522.

It should be noted that the elastic member 1521 is sleeved on the relocking latch 1522 and is limited and compressed by the baffle through the connecting member. When the baffle is broken, the elastic member 1521 loses its restriction. In the case where the elastic member 1521 is out of the limit, the elastic member 1521 applies a compressive elastic force to the relock tongue 1522, and drives the relock tongue 1522 to extend relative to the relock tongue positioning portion 153.

In a specific embodiment provided by the present application, the blocking plate may be made of a material with high hardness, so that before the three locks 13 are destroyed, the blocking plate with high hardness must be destroyed first, which increases the difficulty of destroying the three locks 13, and further increases the security of the security lock 100.

In another embodiment provided herein, the baffle may be made of a shatter material, such as glass, tempered glass, or the like. Thus, before breaking the three locks 13, the shutter must be broken, causing it to break and fail. And when the baffle is broken, the elastic member 1521 loses its restriction.

It should be noted that there are two mounting positions for the relock bolt assembly 152.

Referring to fig. 7, the first installation position is: the relocking bolt assembly 152 is installed in the relocking bolt positioning portion 153, three groups are provided in the relocking bolt positioning portion 153, and three groups are also provided in the relocking bolt assembly 152. The three sets of double-locking tongue positioning portions 153 are provided on the side corresponding to the three locks 13, respectively. When the baffle is broken, the elastic member 1521 loses its restriction. The elastic member 1521 applies a compressive elastic force to the relocking latch 1522 to drive the relocking latch 1522 to extend.

Further, for supporting the secondary restriction of the movement of the interlocking mechanism 15 to the linkage mechanism 12, in a specific embodiment provided by the present application, one side of the three limiting members 121 is provided with a wing extending outward, and the height of the wing is higher than the bottom height of the bottom surface of the locking tongue of any one of the three locks 13 and the bottom height of the bottom surface of the interlocking tongue 1522 of the interlocking mechanism 15. When the relocking bolt 1522 extends, the side wing of a corresponding one of the three limiting members 121 can abut against the extended relocking bolt 1522. Therefore, the re-locking bolt 1522 is matched and connected with one corresponding limiting member 121, and the three corresponding limiting members 121 are secondarily limited to return.

When the baffle is broken, the elastic member 1521 loses its restriction. The elastic member 1521 applies a compressive elastic force to the relocking bolt 1522 to drive the relocking bolt 1522 to extend out, and the relocking bolt 1522 is connected with the three corresponding limiting members 121 in an interconnecting manner. The three corresponding limiting members 121 are restricted from moving back, the first connecting rod 122 and the second connecting rod 123 are restricted from moving, the movable plate 124 is restricted from moving back relative to the base plate 11, the plurality of bolts extending out of the movable plate 124 relative to the base plate 11 cannot move back, and the safety lock 100 is in a locked state. Thereby realize to the secondary spacing of fly leaf 124, increased safety lock 100's theftproof function, further improve the security performance.

Referring to fig. 8, the second installation position is: the relock tongue assembly 152 is disposed in a relock tongue positioning portion 153, and the relock tongue positioning portion 153 is disposed on the base plate 11. Specifically, the movable plate 124 is provided with a movable plate stopper corresponding to the relocking bolt positioning portion 153. When the baffle is broken, the elastic member 1521 loses its restriction. The elastic member 1521 applies a compressive elastic force to the relocking latch 1522 to drive the relocking latch 1522 to extend out relative to the relocking latch positioning portion 153.

One end of the relocking bolt assembly 152 is connected to the linkage mechanism 12, and the other end of the relocking bolt assembly 152 is selectively coupled to the relocking bolt positioning portion 153. Specifically, the extended portion of the relocking bolt 1522 is coupled to the movable plate stopper to limit the movable plate 124 from retracting relative to the base plate 11, the plurality of bolts extended from the movable plate 124 relative to the base plate 11 cannot retract, and the security lock 100 is in a locked state. Thereby realize to the secondary spacing of fly leaf 124, increased safety lock 100's theftproof function, further improve the security performance.

In order to further prolong the service life of the safety lock 100, in another embodiment provided by the present application, two guiding oblong holes that are opposite and inclined in the length direction are formed on the movable plate 124;

the safety lock 100 further comprises two groups of protection assemblies, wherein each protection assembly comprises a protection limiting moving part and a protection limiting block 17;

one end of the protection limiting movable part is connected to the movable plate 124, and the other end of the protection limiting movable part is connected to the guide long circular hole;

the protection limiting block 17 is arranged on the substrate 11 and provided with a limiting bulge;

Specifically, the safety lock 100 further includes a first protection limiting member, a first moving pin, and a second protection limiting member. The first protection limiting part and the second protection limiting part are symmetrically arranged, and the first protection limiting part and the second protection limiting part are symmetrically arranged. The movable plate 124 is provided with a first guide oblong hole and a second guide oblong hole. One end of the first protection limiting movable piece is hinged to the movable plate 124, and the other end of the first protection limiting movable piece is hinged to the first guide long circular hole; one end of the second protection limiting moving part is hinged to the movable plate 124, and the other end of the second protection limiting moving part is hinged to the second guide long circular hole. The first protection limiting block is provided with a first limiting bulge, and the second limiting block is provided with a second limiting bulge. The length direction of the first guide long round hole is inclined, so that one tail end of the first guide long round hole corresponds to the first limiting surface of the first limiting bulge, and the other tail end of the first guide long round hole is outwards far away from the first limiting surface; the length direction of the second guide long round hole is inclined, so that one tail end of the second guide long round hole corresponds to the second limiting surface of the second limiting protrusion, and the other tail end of the second guide long round hole is away from the second limiting surface outwards.

Once the acting force applied to the movable plate 124 exceeds the limit value, the hinge pin is limited by the direction of the guide oblong hole, so that the protective limit stopper also rotates counterclockwise by taking the hinge pin as a rotation center in the moving process. When the protection limiting movable part moves to one tail end of the guide long circular hole, the tail end corresponds to the limiting surface of the limiting protrusion, and after the fixed point of the protection limiting movable part touches the limiting surface, the movable plate 124 can be prevented from continuing to move under the action of the acting force exceeding the limiting value due to the limiting effect of the limiting surface, so that the protection effect is achieved.

Referring to fig. 9, the protection limiting block 17 includes a protection limiting fixed member 171, a protection pin body 172, a protection elastic member 173, and a blocking member 174;

a first through hole is formed in the protection limiting fixed part 171, and a second through hole is formed in the plugging part 174;

the blocking piece 174 blocks one end of the first through hole;

one end of the protection pin body 172 penetrates through one end of the first through hole, the other end of the protection pin body 172 penetrates through the second through hole, and the protection elastic piece 173 is blocked in the first through hole by the blocking piece 174;

the protection pin body 172 contacts and supports the protection limit stopper.

Under a normal state, due to the limiting effect of the protective elastic member 173, the protective pin body 172 is in a suspended state to support the protective limiting member, so that the protective limiting member can be prevented from accidentally sliding down to one end of the guide slotted hole, and the movable plate 124 is prevented from moving under the condition that the acting force exceeding the limiting value is not received. In the case where the force exceeding the limit value is applied, the protection limiting member also rotates counterclockwise around the hinge pin as a rotation center during the movement of the protection limiting member, that is, the protection pin 172 is pressed down, and the protection elastic member 173 is in a pressed state. After that, once the force exceeding the limit value is released, the protection stopper can be easily restored by the force of the protection elastic member 173.

Further, an inward first annular shoulder is arranged at the top of the first through hole, and an outward second annular shoulder is arranged on the protection pin body 172;

the inner diameter of the first annular shoulder is equal to the inner diameter of the second through hole, such as the diameter of the protection pin body 172;

the outer diameter of the protective elastic member 173 is equal to the inner diameter of the first through hole.

It should be noted that "equal to" as used herein is understood to be adapted so that the first annular shoulder, the protection pin body 172 and the second through hole can be reliably assembled, and the protection elastic member 173 and the first through hole 57 can be reliably assembled. Due to the structural arrangement, the protection pin body 172 always moves linearly without deflection under the limiting action of the inner diameter of the first annular shoulder, the diameter of the protection pin body 172 and the inner diameter of the second through hole 49 in the process of moving in the axial direction in the first through hole, and the phenomenon that the protection pin body 172 is difficult to reset due to deflection in the moving process can be avoided.

In the specific implementation process of the safety lock 100, the locking state and the unlocking state of the safety lock 100 are realized by arranging the linkage mechanism 12; by providing the three locks 13, the first relocking of the locked state of the security lock 100 is realized; by providing the relocking mechanism 15, the second relocking of the locked state of the security lock 100 is realized. The anti-theft function of the safety lock 100 is added, and the safety performance of the safety lock 100 is improved.

The application also discloses a locking device comprising the safety lock 100.

Specifically, a belt lock device, belt lock device includes: a substrate; a linkage mechanism arranged on the substrate and moving relative to the substrate; the three locks are arranged on the base plate and are matched with or separated from the linkage mechanism, and are used for limiting or releasing the limitation on the movement of the linkage mechanism; the driving mechanism is arranged on the substrate and drives the linkage mechanism to move; and the relocking mechanism is arranged on the substrate and is matched and connected with the linkage mechanism, and is used for secondarily limiting the movement of the linkage mechanism.

Wherein the linkage mechanism is separated from or connected with the relocking mechanism;

the linkage mechanism is separated from or connected with the three locks in a matching mode;

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that there is an element defined as "comprising" … … does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A safety lock is characterized by comprising a base plate, three locks, a linkage mechanism, a driving mechanism and a re-locking mechanism, wherein the driving mechanism is connected with the linkage mechanism, and the re-locking mechanism is connected with the linkage mechanism;

2. The safety lock according to claim 1, wherein the linkage mechanism comprises a movable plate and three stoppers connected to the movable plate, the movable plate and the three stoppers are movably disposed on the base plate, respectively, and the movable plate is connected to the movable plate;

3. The safety latch according to claim 2, wherein said linkage further comprises a first link and a second link;

4. The security lock of claim 2, wherein one side of the three position-limiting members is provided with a side wing extending outward, and the height of the side wing is higher than the bottom height of the lock tongue of any one of the three locks and the bottom height of the re-locking lock tongue of the re-locking mechanism;

5. The security lock of claim 2, further comprising:

pressing a sheet and a pin shaft;

6. The security lock of claim 5, wherein the drive mechanism comprises:

the rack is arranged on the movable plate;

a rotating shaft mounted on the substrate;

a gear rotating integrally with the rotating shaft and engaged with the rack;

7. The safety lock according to claim 2, wherein said movable plate is provided with two oblong guiding holes inclined with respect to each other in the longitudinal direction;

8. The safety lock according to claim 7, wherein said protection limiting stopper comprises a protection limiting fixed part, a protection pin body, a protection elastic part and a plugging part;

the plugging piece is plugged at one end of the first through hole;

9. The security lock of claim 8, wherein the top of said first through hole is provided with a first annular shoulder facing inwardly, and said guard pin body is provided with a second annular shoulder facing outwardly;

10. The security lock of claim 1, wherein the relock mechanism comprises:

a protector that protects the three locks;

a relocking bolt assembly restrained by a guard;

11. The security lock of claim 10, wherein the protective member is a shield covering the three locks;

12. The security lock of claim 11, wherein the flap is made of a frangible material.

13. A lock-carrying apparatus, characterized in that it comprises a safety lock according to any one of claims 1 to 12.