CN212317685U

CN212317685U - Door lock and door body using same

Info

Publication number: CN212317685U
Application number: CN202021773447.XU
Authority: CN
Inventors: 唐太林
Original assignee: Jiangmen Camax Hardware Corp ltd
Current assignee: Jiangmen Camax Hardware Corp ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-01-08
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a door lock and a door body, wherein the door lock comprises a shell, a first locking mechanism, a second locking mechanism and a third locking mechanism are arranged in the shell, the first locking mechanism comprises a first lock tongue and a first driving component for driving the first lock tongue to move in a stretching way, the second locking mechanism comprises a second lock tongue and a second driving component for driving the second lock tongue to move in a stretching way, and the third locking mechanism comprises a third lock tongue and a third driving component for driving the third lock tongue to move in a stretching way; when the fourth swing arm is stirred the third spring bolt and is stretched out and carry out the locking, the third spring bolt drives the second driving medium and removes, make first driving medium and third swing arm break away from the linkage, and stir the shrink of third spring bolt in the fourth swing arm and unblank, the third spring bolt can drive the second driving medium and reset, make first driving medium and third swing arm resume the linkage, structural design is reasonable, the theftproof performance is high, switch lock convenient operation, the installation is nimble convenient, application scope is wider, and is more reliable and practical.

Description

Door lock and door body using same

Technical Field

The utility model relates to a tool to lock technical field especially relates to a door body of lock and applied this lock.

Background

The door is usually provided with a door lock, and the door lock is locked by a bolt. In the related technology, the door lock has a single bolt, simple structure and poor anti-theft effect; some have the lock of two or more spring bolts, independent work between each spring bolt, the structure is too complicated, switch lock complex operation, the flexibility is relatively poor, and it is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a door lock makes and can produce the linkage between each spring bolt, convenient operation, and structural design is reasonable, and is more practical reliable.

The utility model also provides a door body of using above-mentioned lock.

According to the utility model discloses lock of first aspect embodiment includes:

the first locking mechanism comprises a first bolt and a first driving assembly for driving the first bolt to move telescopically;

the second locking mechanism comprises a second lock bolt and a second driving assembly for driving the second lock bolt to move telescopically;

the third locking mechanism comprises a third lock bolt and a third driving assembly for driving the third lock bolt to move telescopically;

the first driving assembly comprises a first rotating piece, and the first rotating piece is provided with a first swing arm used for shifting the first lock bolt and a second swing arm used for being linked with the second driving assembly and the third driving assembly; the second driving assembly comprises a second rotating part, the second rotating part is provided with a third swing arm used for shifting the second lock bolt, and the second swing arm is linked with the second rotating part through a first driving part; the third driving assembly comprises a third rotating part, the third rotating part is provided with a fourth swing arm used for stirring the third lock tongue, and the first rotating part is linked with the third lock tongue through a second driving part, so that the first driving part can be separated from the third swing arm to be linked when the fourth swing arm stirs the third lock tongue to extend out for locking, and the first driving part can be recovered from the linkage when the fourth swing arm stirs the third lock tongue to retract.

According to the utility model discloses door lock has following beneficial effect at least:

the door lock is provided with a first lock bolt, a second lock bolt and a third lock bolt, the first lock bolt is stirred by a first swing arm of a first rotating part to stretch, the second lock bolt is stirred by a third swing arm of a second rotating part to stretch, and the third lock bolt is stirred by a fourth swing arm of a third rotating part to stretch, so that the first lock bolt, the second lock bolt and the third lock bolt can stretch to unlock and lock; the second swing arm of the first rotating piece is linked with the second rotating piece through the first transmission piece, and when the first rotating piece drives the first lock tongue to contract and unlock, the second lock tongue can be linked to contract and unlock at the same time; meanwhile, the first transmission piece is linked with the third spring bolt through the second transmission piece, so when the fourth swing arm is used for stirring the third spring bolt to stretch out for locking, the third spring bolt drives the second transmission piece to move, the first transmission piece and the third swing arm can be separated from linkage, namely, the first transmission piece cannot be linked to open the second spring bolt after the third spring bolt is locked, and when the fourth swing arm is used for stirring the third spring bolt to shrink for unlocking, the third spring bolt can drive the second transmission piece to reset, the first transmission piece and the third swing arm can recover linkage, the second spring bolt and the first spring bolt can also be linked to shrink after the third spring bolt shrinks for unlocking, and therefore the unlocking purpose is achieved.

The first driving assembly comprises a first rotating piece, and the first rotating piece is provided with a first swing arm used for shifting the first lock bolt and a second swing arm used for being linked with the second driving assembly and the third driving assembly; the second driving assembly comprises a second rotating part, the second rotating part is provided with a third swing arm used for shifting the second lock tongue, and the second swing arm is linked with the second rotating part through a first driving part; the third driving assembly comprises a third rotating part, the third rotating part is provided with a fourth swing arm used for stirring a third lock tongue, the first rotating part is linked with the third lock tongue through a second driving part, so that the first driving part and the third swing arm can be separated from linkage when the fourth swing arm stirs that the third lock tongue extends out to be locked, and when the fourth swing arm stirs that the third lock tongue contracts, the fourth swing arm can be linked with the second driving part to enable the first driving part and the third swing arm to recover linkage.

According to some embodiments of the utility model, first rotating member includes side by side and coaxial setting's first rotating ring, second rotating ring and third rotating ring, the second rotating ring is located first rotating ring with between the third rotating ring, first rotating ring the second rotating ring with be provided with the convex arm on the third rotating ring respectively with the cooperation form first swing arm, the second swing arm is located on the second rotating ring.

According to some embodiments of the utility model, first swivel side is equipped with first stopper, be equipped with on the second swivel with the second stopper that first stopper corresponds, first stopper with the cooperation of second stopper, so that the second swivel can follow first swivel rotates and stirs first spring bolt.

According to some embodiments of the utility model, the middle part of first rotating ring with the third rotating ring is equipped with the connecting hole that is used for connecting the handle respectively.

According to some embodiments of the utility model, first drive assembly still includes that the fourth rotates piece and first torsional spring, first torsional spring with the fourth rotates the piece and connects, it is right to rotate the piece and provide elastic force, the fourth rotates the piece and promotes first swing arm is so that first spring bolt is in the state of often stretching out, first spring bolt is the latch bolt.

According to some embodiments of the utility model, the second drive assembly still includes the fifth rotation piece, the fifth rotation piece is equipped with and is used for promoting third swing arm pivoted fifth swing arm, so that the third swing arm is stirred the second spring bolt shrink, first transmission piece be equipped with the cooperation portion that the fifth swing arm matches, in order to promote the swing of fifth swing arm.

According to some embodiments of the utility model, the lock still includes the casing, third drive assembly is still including the lock block, be equipped with on the third spring bolt with the lock block matches and follows the perpendicular to the first spout that third spring bolt moving direction extends, be equipped with on the casing along the first draw-in groove and the second draw-in groove that third spring bolt moving direction distributes, be equipped with in the first spout and be used for promoting the spring that the lock block removed, so that fourth swing arm is stirred when the third spring bolt contracts the fourth swing arm promotes the lock block chucking in the first draw-in groove, and the fourth swing arm is stirred when the third spring bolt stretches out the fourth swing arm promotes the lock block chucking in the second draw-in groove.

According to some embodiments of the utility model, be equipped with on the third spring bolt with the second spout that the second driving medium matches, the one end of second driving medium with first driving medium is connected, the other end extend to with the fourth swing arm corresponds the position, can link during the swing of fourth swing arm the second driving medium so that first driving medium promotes the third swing arm is stirred the second spring bolt contracts.

According to some embodiments of the utility model, the lock still includes the lock core, the third rotate the piece with the lock core is connected, with by the lock core drives the third rotates the piece and rotates.

According to the utility model discloses the door body of first aspect embodiment, install the lock of above-mentioned first aspect embodiment on the door body.

According to the utility model discloses the door body has following beneficial effect at least:

the door body adopts above-mentioned lock to unblank and lock, and structural design is reasonable, and the theftproof performance is high, and switch lock convenient operation, and lock compact structure, the lock body is small, is favorable to saving installation space, and the installation is more nimble convenient, can be suitable for the less door body of size, and application scope is wider.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of a first extended state of a latch bolt of a door lock according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a state in which a first bolt and a second bolt of a door lock according to an embodiment of the present invention are extended simultaneously;

fig. 3 is a schematic view illustrating a state in which a first bolt, a second bolt, and a third bolt of a door lock according to an embodiment of the present invention are simultaneously extended;

fig. 4 is an exploded view of a door lock according to an embodiment of the present invention;

fig. 5 is a schematic view of an internal three-dimensional structure of a door lock according to an embodiment of the present invention;

fig. 6 is a schematic view of a connection structure between a first driving assembly and a first bolt in the door lock according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a third bolt in the door lock according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a bottom case of a door lock according to an embodiment of the present invention;

fig. 9 is an enlarged schematic view of a structure at a in fig. 8.

Reference numerals:

the door lock 100, the housing 110, the panel 111, the bottom case 112, the positioning post 1121, the second torsion spring 1122, the first slot 1123, the second slot 1124, the first latch 120, the blocking plate 121, the guiding groove 122, the second latch 130, the third latch 140, the first sliding groove 141, the second sliding groove 142, the first spring 143, the locking block 144, the locking block 1441, the cover plate 145, the first rotating member 150, the first swing arm 151, the second swing arm 152, the first rotating ring 1510, the first protruding arm 1511, the first limiting block 1512, the first connecting hole 1513, the second rotating ring 1520, the second protruding arm 1521, the second limiting block 1522, the third rotating ring 1530, the third protruding arm 1531, the second connecting hole 1532, the fourth rotating member 1540, the first torsion spring 1550, the second rotating member 160, the third swing arm 161, the third connecting hole 162, the fifth rotating member 163, the fifth swinging arm 1631, the third rotating member 170, the fourth rotating member 171, the first transmission member 180, the mating part 181, and the second transmission member 190, a toggle end 191, a limit groove 192 and a second spring 193.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated, for example, up, down, left, right, etc., referred to the orientation description is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first, second, etc. described, it is only for the purpose of distinguishing technical features, and it is not understood that relative importance is indicated or implied or that the number of indicated technical features is implicitly indicated or that the precedence of the indicated technical features is implicitly indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 9, a door lock 100 according to an embodiment of the present invention is described, which is suitable for being mounted on a door body, such as a room door, an office door, a security door, etc.

Referring to fig. 1 to 3, a door lock 100 according to an embodiment of the present invention includes a housing 110, a first locking mechanism, a second locking mechanism and a third locking mechanism are installed in the housing 110, the first locking mechanism includes a first bolt 120 and a first driving assembly, the second locking mechanism includes a second bolt 130 and a second driving assembly, and the third locking mechanism includes a third bolt 140 and a third driving assembly. The casing 110 is provided with through holes corresponding to the first bolt 120, the second bolt 130 and the third bolt 140, the first driving assembly can drive the first bolt 120 to move from the through holes in a telescopic manner, the second driving assembly can drive the second bolt 130 to move from the through holes in a telescopic manner, and the third driving assembly can drive the third bolt 140 to move from the through holes in a telescopic manner, so that the three bolts are matched to lock and unlock.

The first driving assembly includes a first rotating member 150, the first rotating member 150 is rotatably connected to the inner side of the casing 110, the first rotating member 150 is provided with a first swing arm 151 and a second swing arm 152, and the first swing arm 151 is used for shifting the first latch tongue 120, so that the first latch tongue 120 can extend or retract. In the embodiment, the first latch bolt 120 is a latch bolt, and in a normal state, the latch bolt is in an extended state, as shown in fig. 1, that is, when the first swing arm 151 does not toggle the first latch bolt 120, the first latch bolt 120 is in a locked state. When the second bolt 130 and the third bolt 140 are in a retracted state, the first swing arm 151 swings by rotating the first rotating member 150, so as to toggle the first bolt 120 to retract into the through hole, thereby achieving the purpose of unlocking. The first rotating member 150 can be connected to a handle, and the handle drives the first rotating member 150 to rotate, so as to facilitate the operation of opening the door lock 100. The figures do not show the structure of the handle.

Referring to fig. 1 to 3, in some embodiments, the second driving assembly includes a second rotating member 160, the second rotating member 160 is provided with a third swing arm 161, and the third swing arm 161 is used for shifting the second latch bolt 130, so that the second latch bolt 130 can extend or retract. Specifically, the second latch bolt 130 is located below the first latch bolt 120, the second latch bolt 130 is a square latch bolt, the second rotating member 160 is rotatably connected to the inner side of the casing 110, the second rotating member 160 can drive the third swing arm 161 to swing when rotating, the third swing arm 161 can stir the second latch bolt 130 to extend outwards when swinging in the counterclockwise direction, and the third swing arm 161 can stir the second latch bolt 130 to retract inwards when swinging in the clockwise direction, so that the second latch bolt 130 is driven to stretch. Fig. 2 is a schematic view illustrating a state where the first locking tongue 120 and the second locking tongue 130 are simultaneously extended.

Referring to fig. 1 to 3, the second swing arm 152 is linked with the second rotating member 160 through the first transmission member 180, so that the second rotating member 160 can be driven to rotate when the first rotating member 150 rotates. In the embodiment, when the second lock tongue 130 is in the extended locked state, and the handle drives the first rotating member 150 to rotate, the first rotating member 150 and the second rotating member 160 are linked, so that the second rotating member 160 rotates simultaneously and stirs the second lock tongue 130 to retract, and thus the second lock tongue 130 can be opened while the first lock tongue 120 is opened, thereby unlocking the lock. For example, one end of the first transmission member 180 is connected to the second swing arm 152, and the other end of the first transmission member 180 is connected to the second rotation member 160, so that the first rotation member 150 and the second rotation member 160 can be linked. It is understood that the second rotating member 160 can be operated by a separate handle to extend the second latch tongue 130 for locking.

Referring to fig. 1 to 3, the third driving assembly includes a third rotating member 170, the third rotating member 170 is provided with a fourth swing arm 171, and the fourth swing arm 171 is used for shifting the third latch bolt 140, so that the third latch bolt 140 can extend or retract. The third bolt 140 is located below the second bolt 130, the third bolt 140 is also a square bolt, the third rotating part 170 can drive the fourth swing arm 171 to swing when rotating, the fourth swing arm 171 can stir the third bolt 140 to extend outwards when swinging in the counterclockwise direction, and the fourth swing arm 171 can stir the third bolt 140 to retract inwards when swinging in the clockwise direction, so that the third bolt 140 is driven to stretch. Fig. 3 is a schematic view illustrating a state where the first locking bolt 120, the second locking bolt 130 and the third locking bolt 140 are simultaneously extended.

Specifically, the first transmission member 180 is linked with the second rotation member 160, the first transmission member 180 is connected with a second transmission member 190, the second transmission member 190 is linked with the third bolt 140, and the third bolt 140 can drive the second transmission member 190 to move when moving, so that the first transmission member 180 moves along with the second transmission member 190. In an embodiment, when the fourth swing arm 171 toggles the third latch 140 to extend for locking, the third latch 140 drives the second driving element 190 to move, and at this time, the first driving element 180 deviates from the second rotating element 160, so that the first driving element 180 and the third swing arm 161 can be separated from linkage, that is, the first rotating element 150 cannot be linked to open the second latch 130 after the third latch 140 is locked. When the fourth swing arm 171 toggles the third lock tongue 140 to retract for unlocking, the third lock tongue 140 can drive the second transmission piece 190 to reset, so that the first transmission piece 180 and the third swing arm 161 are linked again, and the second lock tongue 130 and the first lock tongue 120 can also be linked to retract after the third lock tongue 140 retracts for unlocking, thereby achieving the purpose of unlocking. The first driving component, the second driving component and the third driving component of the door lock 100 are linked through the first transmission piece 180 and the second transmission piece 190, linkage unlocking of three lock tongues is achieved, the structural design is reasonable, the structure is more compact, the reduction of the size of the lock body is facilitated, the flexibility of installation of the door lock 100 is improved, the application range is wider, and the door lock is more reliable and practical.

Referring to fig. 4 and 5, in some embodiments, the first rotating member 150 includes a first rotating ring 1510, a second rotating ring 1520, and a third rotating ring 1530, the first rotating ring 1510, the second rotating ring 1520, and the third rotating ring 1530 being arranged side by side and coaxially, which means that the central axes of the three rotating rings overlap, the three rotating rings can be stacked together, the second rotating ring 1520 is located between the first rotating ring 1510 and the third rotating ring 1530, a first protruding arm 1511 is formed by protruding the side edge of the first rotating ring 1510 outwards, a second protruding arm 1521 and a second swing arm 152 are formed by protruding the side edge of the second rotating ring 1520 outwards, a third protruding arm 1531 is formed by protruding the side edge of the third rotating ring 1530 outwards, the first protruding arm 1511, the second protruding arm 1521 and the third protruding arm 1531 form the first swing arm 151 side by side, and the first latch 120 is provided with a baffle 121 extending along the inner side of the housing 110 to form a position corresponding to the first swing arm 151. It is understood that the first 1510, second 1520 and third 1530 rotation rings can be connected by a handle so that the three rotation rings can rotate together; the first rotating ring 1510, the second rotating ring 1520 and the third rotating ring 1530 can also rotate independently respectively, when each rotating ring rotates independently, the baffle 121 can be toggled through the corresponding protruding arm, the baffle 121 drives the first lock tongue 120 to move, for example, the first rotating ring 1510 faces the inner side of the door body and is connected with one handle, the third rotating ring 1530 faces the outer side of the door body and is connected with another handle, thus, the first rotating ring 1510 and the third rotating ring 1530 can be operated through different handles, namely, the first lock tongue 120 can be opened on the outer side and the inner side of the door body for unlocking, and the use is flexible and convenient. In addition, taking a door body of a room as an example, the inner side of the door body refers to the inner side of the room, and the outer side of the door body refers to the outer side of the room.

Wherein, the middle position of first rotating ring 1510 is provided with the first connecting hole 1513 connected with the handle, the middle position of third rotating ring 1530 is provided with the second connecting hole 1532 connected with the handle, first connecting hole 1513 and second connecting hole 1532 are square holes, are convenient for fix a position with the handle. Of course, the formation of the first and second connection holes 1513 and 1532 is not limited to a square shape, but may be a triangle, a hexagon, etc.

Referring to fig. 4 and 6, in some embodiments, a first limiting block 1512 is disposed on a side of the first rotating ring 1510, a second limiting block 1522 corresponding to the first limiting block 1512 is disposed on a side of the second rotating ring 1520, when the first rotating ring 1510 and the second rotating ring 1520 are disposed side by side, the first limiting block 1512 and the second limiting block 1522 cooperate to perform a limiting function, and when the first rotating ring 1510 rotates, the second rotating ring 1520 can rotate along with the first rotating ring 1510, and further, the first locking tongue 120 is toggled to move. It should be noted that, in the embodiment, the second rotating ring 1520 can only rotate along with the first rotating ring 1510, and the second rotating ring 1520 cannot be driven to rotate when the third rotating ring 1530 rotates, it can be understood that the second rotating ring 1520 is linked with the second rotating member 160, and when the second locking tongue 130 extends out of the locking position, the first rotating ring 1510 can be driven to rotate by the handle inside the door body, and further the second rotating ring 1520 is driven to rotate and linked with the second rotating member 160, so that the third swing arm 161 can pull the second locking tongue 130 to retract, thereby opening the first locking tongue 120 and the second locking tongue 130, and the second locking tongue 130 cannot be opened by the handle outside the door body, that is, the door lock 100 can only be opened from the inside of the door body when the second locking tongue 130 is locked, and the structure design is reasonable, the anti-theft performance is high, and the door lock is.

Referring to fig. 6, in some embodiments, the first driving assembly further includes a fourth rotating member 1540 and a first torsion spring 1550, the fourth rotating member 1540 being rotatably coupled inside the housing 110, the first torsion spring 1550 being coupled to the fourth rotating member 1540, the first torsion spring 1550 being capable of providing an elastic force to the fourth rotating member 1540. Under the action of the elastic force, the fourth rotating member 1540 can push the first swing arm 151, so that the first swing arm 151 cannot pull the first latch bolt 120, and the latch bolt is in an extended state at this time. Specifically, a stop block corresponding to the fourth rotating member 1540 is arranged on the first rotating member 150, the fourth rotating member 1540 cooperates with the stop block to limit the first swing arm 151 to swing, when the handle drives the first rotating member 150 to rotate, the first rotating member 150 can overcome the acting force of the fourth rotating member 1540 to rotate, so that the first swing arm 151 can stir the first lock tongue 120, after the handle is loosened, the fourth rotating member 1540 pushes the first swing arm 151 to reset, the structure is stable and reliable, the reset structure with the cooperation of the first torsion spring 1550 and the fourth rotating member 1540 is adopted, the installation space is saved, the structure is more compact, and the reduction of the size of the shell 110 is facilitated.

Referring to fig. 5 and 6, positioning pillars 1121 are disposed in the housing 110, and guiding grooves 122 matched with the positioning pillars 1121 are disposed on the first locking tongues 120, so that the first locking tongues 120 can be positioned by matching the positioning pillars 1121 with the guiding grooves 122, the stability of the moving process is ensured, and the reliability is higher. Meanwhile, the positioning pillar 1121 can limit the position of the first swing arm 151, and the positioning pillar 1121 cooperates with the fourth rotating member 1540 to limit the first swing arm 151 at the initial position. Further, a second torsion spring 1122 is further provided inside the housing 110, and the second torsion spring 1122 can provide an elastic force to the first latch tongue 120, so that the first latch tongue 120 can maintain the extended state.

Referring to fig. 5, in some embodiments, the second driving assembly further includes a fifth rotating member 163, the fifth rotating member 163 is provided with a fifth swing arm 1631, and when the fifth rotating member 163 rotates, the fifth swing arm 1631 can be pushed by the fifth swing arm 1631 to rotate, so that the third swing arm 161 stirs the second lock tongue 130 to retract, wherein the first transmitting member 180 is provided with an engaging portion 181 matched with the fifth swing arm 1631, and when the first rotating member 150 links the first transmitting member 180, the first transmitting member 180 pushes the fifth swing arm 1631 to swing through the engaging portion 181. Specifically, the fifth rotating member 163 is rotatably connected in the casing 110, a side edge of the fifth rotating member 163 extends outward to form a fifth swing arm 1631, the fifth swing arm 1631 is arc-shaped, the first rotating member 180 is a first transmission rod, the matching portion 181 is an arc-shaped concave surface formed on the first transmission rod, the concave surface is matched with the fifth swing arm 1631, the concave surface and the fifth swing arm 1631 can abut against each other during linkage, and an end portion of the fifth swing arm 1631 abuts against the third swing arm 161. As shown in fig. 5, when the first rotating member 150 rotates clockwise, the first rotating member drives the first transmission rod to move upward, and the first transmission rod pushes the fifth swing arm 1631 to rotate clockwise, so that the fifth swing arm 1631 pushes the third swing arm 161 to rotate clockwise, thereby shifting the second lock tongue 130 to retract for unlocking.

It can be understood that when the second latch bolt 130 is locked, the door lock 100 can be unlocked only from the inner side of the door body, and the door lock is locked by operating from the inner side of the door body with a separate handle, so that the second rotating member 160 rotates counterclockwise, and the third swing arm 161 toggles the second latch bolt 130 to extend out for locking. The second rotating member 160 is provided with a third connecting hole 162 for connecting the locking handle, and the third connecting hole 162 is square.

Referring to fig. 4, 8 and 9, in some embodiments, the third driving assembly further includes a locking block 144, a first sliding groove 141 is formed in the third locking tongue 140, the first sliding groove 141 is located on a side wall of the third locking tongue 140 and extends in a direction perpendicular to a moving direction of the third locking tongue 140, that is, the first sliding groove 141 extends from an upper side to a lower side of the third locking tongue 140, the locking block 144 is installed in the first sliding groove 141 and can move along the first sliding groove 141, and a first spring 143 is disposed in the first sliding groove 141, and the first spring 143 is configured to generate a downward elastic force on the locking block 144. Meanwhile, a first clamping groove 1123 and a second clamping groove 1124 are arranged on the casing 110, the first clamping groove 1123 and the second clamping groove 1124 are distributed along the moving direction of the third locking tongue 140, specifically, the casing 110 comprises a bottom casing 112 and a panel 111, the first clamping groove 1123 and the second clamping groove 1124 are located on the bottom casing 112, the third locking tongue 140 can drive the locking block 144 to move back and forth along the first clamping groove 1123 and the second clamping groove 1124 when moving telescopically, and a clamping block 1441 matched with the first clamping groove 1123 and the second clamping groove 1124 is formed in the upper end portion of the locking block 144 in an extending mode towards the bottom casing 112.

It can be understood that the third rotating member 170 is located below the third tongue 140, when the third tongue 140 is in a retracted state, the latch 1441 of the locking block 144 is clamped in the first slot 1123, when the third rotating member 170 rotates counterclockwise, the fourth swing arm 171 is driven to swing, and the fourth swing arm 171 pushes the locking block 144 from below to move upward along the first sliding slot 141, so that the locking block 144 is separated from the first slot 1123, and the third tongue 140 extends outward; when the third bolt 140 moves and extends, the locking block 144 moves to the position of the second clamping groove 1124, the fourth swing arm 171 is far away from the locking block 144 at the moment, and the locking block 144 resets downwards under the action of elasticity, so that the clamping block 1441 of the locking block 144 is clamped in the second clamping groove 1124, the locking of the third bolt 140 is realized, the structure is stable and reliable, and the anti-theft performance is high.

In the embodiment, a lock core is installed in the door lock 100, the lock core is connected with the third rotating piece 170, the third rotating piece 170 can be driven to rotate through the lock core, it can be understood that the lock core can be opened only by a corresponding key, and the lock core can open the third bolt 140 both on the outer side and the inner side of the door body through the key. The fourth swing arm 171 is a shifting block formed by outward protruding of the side edge of the third rotating member 170, and the third locking tongue 140 is located at the position of the locking block 144 and is provided with a slot corresponding to the shifting block, so that the shifting block is convenient to abut against the locking block 144.

Referring to fig. 4 and 5, in some embodiments, a second sliding groove 142 matching with the second transmission piece 190 is formed on the third lock tongue 140, the second transmission piece 190 is a second transmission rod, one end of the second transmission rod is connected to the first transmission rod, the other end of the second transmission rod is inserted into the second sliding groove 142 and extends downward through the third lock tongue 140 to form a toggle end 191, the toggle end 191 corresponds to the third rotating piece 170, when the third lock tongue 140 extends, the second transmission rod moves along with the third lock tongue 140 and is away from the fourth swing arm 171, at this time, the fourth swing arm 171 cannot be linked with the second transmission rod, and the first transmission rod is separated from the fifth swing arm 1631. When the third bolt 140 retracts, the first transmission rod and the fifth swing arm 1631 are linked again, at this time, the fourth swing arm 171 can be abutted to the toggle end 191 when rotating clockwise, the second transmission rod moves upwards by pushing the toggle end 191, so as to drive the first transmission rod to move upwards, the fifth swing arm 1631 pushes the third swing arm 161 to rotate clockwise, and the second bolt 130 is toggled to retract to unlock. In addition, a limit groove 192 is formed in the second transmission rod, a second spring 193 is arranged in the limit groove 192, a cover plate 145 is arranged on the second sliding groove 142, the cover plate 145 is fixedly connected to the third bolt 140, a positioning block extending towards the limit groove 192 is arranged on the cover plate 145, one end of the second spring 193 is abutted to the positioning block, and the other end of the second spring 193 is abutted to the inner wall of the limit groove 192, and it can be understood that after the fourth swing arm 171 pushes the second transmission rod to move upwards, the second transmission rod can be reset downwards under the action of the elastic force of the second spring 193.

In the embodiment, when the first bolt 120, the second bolt 130 and the third bolt 140 are all in the locked state, after the third bolt 140 is opened through the lock cylinder, the second bolt 130 can be further opened, and finally the first bolt 120 is opened through the handle, so that the unlocking purpose is realized, the door lock 100 is strong in anti-theft performance, and the use flexibility is convenient.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A door lock, comprising:

2. The door lock of claim 1, wherein the first rotating member comprises a first rotating ring, a second rotating ring and a third rotating ring, which are coaxially disposed side by side, the second rotating ring is located between the first rotating ring and the third rotating ring, the first rotating ring, the second rotating ring and the third rotating ring are respectively provided with a protruding arm to form the first swing arm in a matching manner, and the second swing arm is provided on the second rotating ring.

3. The door lock of claim 2, wherein a first limit block is disposed on a side of the first rotation ring, a second limit block corresponding to the first limit block is disposed on the second rotation ring, and the first limit block is matched with the second limit block, so that the second rotation ring can rotate along with the first rotation ring and move the first lock tongue.

4. The door lock according to claim 2, wherein the first rotary ring and the third rotary ring are respectively provided at the middle portions thereof with coupling holes for coupling with a handle.

5. The door lock of any one of claims 1 to 4, wherein the first driving assembly further comprises a fourth rotating member and a first torsion spring, the first torsion spring is connected with the fourth rotating member to provide an elastic acting force to the fourth rotating member, the fourth rotating member pushes the first swing arm to enable the first lock tongue to be in a normally extended state, and the first lock tongue is a latch tongue.

6. The door lock of claim 1, wherein the second driving assembly further comprises a fifth rotating member, the fifth rotating member is provided with a fifth swing arm for pushing the third swing arm to rotate, so that the third swing arm pulls the second lock tongue to retract, and the first driving member is provided with a matching portion matched with the fifth swing arm to push the fifth swing arm to swing.

7. The door lock of claim 1, further comprising a housing, wherein the third driving assembly further comprises a locking block, the third locking tongue is provided with a first sliding groove which is matched with the locking block and extends in a direction perpendicular to the moving direction of the third locking tongue, the housing is provided with a first clamping groove and a second clamping groove which are distributed in the moving direction of the third locking tongue, and a spring for pushing the locking block to move is arranged in the first sliding groove, so that the fourth swing arm pushes the locking block to be clamped in the first clamping groove when the fourth swing arm pulls the third locking tongue to contract, and the fourth swing arm pushes the locking block to be clamped in the second clamping groove when the fourth swing arm pulls the third locking tongue to extend.

8. The door lock of claim 1, wherein a second sliding groove matched with the second transmission member is formed in the third lock tongue, one end of the second transmission member is connected with the first transmission member, the other end of the second transmission member extends to a position corresponding to the fourth swing arm, and the fourth swing arm can be linked with the second transmission member when swinging, so that the first transmission member can push the third swing arm to shift the second lock tongue to retract.

9. The door lock of claim 1, further comprising a lock cylinder, wherein the third rotating member is connected to the lock cylinder such that the third rotating member is rotated by the lock cylinder.

10. A door body characterized in that the door lock according to any one of claims 1 to 9 is mounted on the door body.