CN113833357A

CN113833357A - Plane lock

Info

Publication number: CN113833357A
Application number: CN202111040436.XA
Authority: CN
Inventors: 项文广; 李乾兴; 周燕义
Original assignee: Wenzhou Yika Lock Technology Co Ltd
Current assignee: Wenzhou Yika Lock Technology Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-12-24

Abstract

The invention relates to a plane lock, a handle groove is arranged on a lock shell, one end of the handle is pivoted on the lock shell, the other end of the handle can be buckled in the handle groove, a lock core mounting seat hole is arranged on the handle, the lock core comprises a lock core sleeve, an inner lock liner and a locking piece, the lock core sleeve is axially matched in the lock core mounting seat hole in a sliding way, the lock core is provided with an initial position and an unlocking position in the lock core mounting seat hole along a pressing direction, the lock core sleeve is correspondingly matched with a reset spring for driving the lock core to automatically bounce to the initial position, a lock core blocking part is arranged in the lock core mounting seat hole, the locking piece is locked and unlocked with the lock core blocking part, the handle is matched with a handle locking component for locking and unlocking the handle in the handle groove, the lock cylinder sleeve is provided with an unlocking driving part which moves along with the lock cylinder sleeve in the axial direction, and the lock cylinder is pressed to slide from the initial position to the unlocking position and touches the handle locking component through the unlocking driving part to complete the unlocking of the handle. The lock core is pressed to realize unlocking action, and the lock has the advantage of compact structure.

Description

Plane lock

Technical Field

The invention relates to a lockset.

Background

The existing plane lock structure is generally as follows: the handle lock comprises a lock shell, wherein a handle groove is formed in the lock shell, a handle capable of being buckled into the handle groove is arranged on the lock shell, a lock cylinder is arranged on the handle, and unlocking and locking of the handle are achieved by rotating the lock cylinder. The planar latch of the above structure has the following disadvantages: 1. the handle is opened by rotating the lock cylinder, so that the defect of inconvenient use exists; 2. the unlocking operation depends on the operation of rotating the lock cylinder, and no mechanical unlocking operation is carried out on the inner side of the object to be locked, so that the use scene of the plane lock is limited, and the plane lock is usually limited to be used in a scene without internal unlocking operation, such as a storage cabinet and the like; 3. the waterproof sealing performance is poor.

Disclosure of Invention

The invention aims at: in order to overcome the defects in the prior art, the invention provides the plane lock which realizes the unlocking action by pressing the lock cylinder and has the advantage of compact structure.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a plane lock, includes lock shell, handle and lock core, and lock shell outside end face is equipped with the handle groove, and handle one end pivot is adorned on the lock shell, and the handle other end can be detained into the handle groove, and the handle is detained and is served and be equipped with the lock core mount pad hole that supplies the lock core installation, and the lock core includes lock core cover, location normal running fit at the interior lock courage of lock core cover and along with interior lock courage pivoted locking piece, its characterized in that: the lock cylinder sleeve is axially and slidably matched in the lock cylinder mounting seat hole, the lock cylinder is provided with an initial position and an unlocking position in the lock cylinder mounting seat hole along a pressing direction, the lock cylinder sleeve is correspondingly matched with a reset spring for driving the lock cylinder to automatically bounce to the initial position, a lock cylinder blocking part is arranged in the lock cylinder mounting seat hole, and a locking part is locked and unlocked by the lock cylinder blocking part, so that locking and unlocking of the lock cylinder at the initial position are realized.

Through adopting above-mentioned technical scheme, press the cylinder after adopting the unblock of key lock core and finally accomplish the unblock operation of handle, then the key lock core unblock back, the handle still can be in the locking state, relies on to press the cylinder to reach the unblock of handle for the plane lock uses more conveniently, and the cylinder is arranged on the handle as the operating parts installation of handle unblock, need not to design handle unblock operating parts alone, and the structure is more compact.

Preferably, the handle locking assembly has an in-door unlocking operation end located inside the lock case for unlocking the handle locking assembly from the handle, and the handle is automatically ejected out of the handle slot by the elastic member. Under this structural design, indoor, the unblock operation end can accomplish the unblock action to the handle in the operating door.

Preferably, the handle locking assembly comprises a locking hook pivoted in the lock shell, a clamping table is arranged at a hole of the lock cylinder mounting seat, a hook head of the locking hook can be hooked and separated from the clamping table, the locking hook is matched with an elastic driving piece, the elastic driving piece provides elastic locking force for driving the locking hook to swing until the hook head hooks the clamping table, the clamping table pushes the locking hook to swing to give way until the handle is completely buckled into the handle groove, the hook head of the locking hook swings into a corresponding position of the clamping table to hook the clamping table, the lock cylinder is pressed to slide from an initial position to an unlocking position, and one end of the hook head of the locking hook is pushed by the unlocking driving part, so that the locking hook is driven to swing until the hook head is separated from the clamping table. Under the structural design, the locking hook and the clamping table are matched to realize the locking and unlocking of the handle, the locking hook is driven by the elastic driving piece, the hook head swings into the clamping table to realize the automatic locking of the handle, the lock cylinder is pressed, the lock cylinder sleeve of the lock cylinder is sleeved with the unlocking driving part to push the hook head of the locking hook to drive the locking hook to swing, the hook head is separated from the clamping table to finish the unlocking operation, and the handle locking device has the advantages of simple and compact structure,

preferably, the locking hook is L-shaped, the locking hook comprises a locking hook arm with a hook head and an unlocking arm provided with the inner unlocking operation end, and the connecting part of the locking hook arm and the unlocking arm is pivoted on the lock shell. Under this structural design, have simple structure, the unblock action is reliable and convenient advantage.

Preferably, the lock cylinder mounting seat hole comprises a through hole surrounded by a main seat body integrally formed on the handle, a bottom cover covering the bottom end opening of the through hole is arranged on the main seat body, the return spring is a spiral spring supported on the bottom cover, the clamping table is arranged on the bottom cover, an axial limiting end face is arranged in the through hole, and a stopping step matched with the axial limiting end face in a stopping way is arranged on the lock cylinder sleeve. Under this structural design, have processing convenience and lock core simple to operate's advantage.

Preferably, the lock cylinder blocking part is a stopping protrusion arranged at the bottom of the lock cylinder mounting hole, and the blocking part is provided with a blocking part matched with the stopping protrusion in a stopping way and an avoiding part for avoiding the stopping protrusion along the rotating direction. Under this structural design, rotate the inner lock courage for the backstop portion of latch corresponds with backstop protruding position, through backstop protruding backstop, can't press the lock core, accomplish the lock core and lock, after inserting the key that matches, rotate the inner lock courage, the latch rotates thereupon and dodges the portion and correspond with backstop protruding position, and the lock core can be pressed, accomplishes the unblock operation of handle, has simple structure compactness, the reliable operation's advantage.

Preferably, the handle is provided with a pivot lug, the lock shell is rotatably matched with a linkage rotating shaft, the pivot lug is sleeved on the linkage rotating shaft and is in linkage connection with the linkage rotating shaft, and the linkage rotating shaft is connected with a transmission part. Under this structural design, the handle rotation directly drives the driving medium through the linkage pivot, reaches the lock and opens, has easy operation's advantage.

Preferably, the handle groove comprises a main groove body facing the notch of the handle groove and an inner groove cavity staggered with the notch, an annular sealing gasket is arranged on the edge of the notch of the handle groove on the lock shell, the handle comprises a handle panel covering the notch of the handle groove when the handle is buckled into the handle groove, the handle panel is in sealing fit with the annular sealing gasket, the pivoting lug is arranged at the bottom of the handle panel, the pin joint lug extends into the inner groove cavity, the hole cover of the lock cylinder mounting seat hole is provided with a rubber end cover for sealing and covering the hole opening of the lock cylinder mounting seat hole and opening the hole opening of the lock cylinder mounting seat hole, the hole of the lock cylinder mounting seat hole is surrounded with an annular groove, the rubber end cover comprises a cover plate covering the hole of the lock cylinder mounting seat hole, an annular sealing convex edge inserted into the annular groove is arranged on the bottom surface of the cover plate in a protruding mode, the annular sealing convex edge is in contact sealing fit with the annular groove wall, and the rubber end cover can elastically deform to press the cover plate of the rubber end cover to press the lock cylinder. Under this structural design, after the handle is buckled into the handle groove, the handle panel covers the notch sealing of handle groove, and lock core position shelters from sealedly through the rubber end cover on the handle to realize that lock shell and handle contact water and dust, all the other spare parts are almost with outside isolated state, therefore performance such as waterproof, dustproof, salt fog are more outstanding, and under the lock core is the locking state, directly press the rubber end cover and can accomplish the action of unblanking.

Preferably, the bottom of the annular groove is provided with a connecting hole, the annular sealing convex edge is provided with a connecting column which is inserted into the connecting hole in a protruding mode, and the connecting column is provided with an anti-falling barb which prevents the connecting column from falling off the connecting hole. Under this structural design, the rubber end cover installation is more convenient with the use.

The invention is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a planar lock handle in a locked condition in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a planar lock according to an embodiment of the present invention in a locked state;

FIG. 3 is a perspective view of the handle of the flat lock of the present invention in an open position;

FIG. 4 is a schematic structural view of a flat lock according to an embodiment of the present invention in an open state;

fig. 5 is an exploded view of a handle according to an embodiment of the present invention.

Detailed Description

Referring to the attached drawings 1-5, the invention discloses a plane lock, which comprises a lock shell 1, a handle 2 and a lock core 3, wherein a handle groove 11 is arranged on the outer side end face of the lock shell 1, one end of the handle 2 is pivoted on the lock shell 1, the other end of the handle 2 can be buckled in the handle groove 11, a lock core mounting seat hole 21 for mounting the lock core 3 is arranged on the buckling end of the handle 2, the lock core 3 comprises a lock core sleeve 31, an inner lock core 32 positioned and rotationally matched in the lock core sleeve 31 and a locking piece 33 rotating along with the inner lock core 32, the lock core sleeve 31 is axially and slidably matched in the lock core mounting seat hole 21, the lock core 3 has an initial position and an unlocking position in the lock core mounting seat hole 21 along the pressing direction, the lock core sleeve 31 is correspondingly matched with a return spring 4 driving the lock core 3 to automatically bounce to the initial position, a lock core blocking part 51 is arranged in the lock core mounting seat hole 21, the locking piece 33 is matched with the lock core blocking part 51 in a locking and unlocking mode, therefore, the locking and unlocking of the lock cylinder 3 at the initial position are formed, the handle 2 is matched with a handle locking component for locking and unlocking the handle 2 in the handle groove 11, the lock cylinder sleeve 31 is provided with an unlocking driving part 311 which moves along with the lock cylinder sleeve 31 in the axial direction, and the lock cylinder 3 is pressed to slide from the initial position to the unlocking position and touches the handle locking component through the unlocking driving part 311 to complete the unlocking of the handle 2. When the handle is unlocked, the lock cylinder 3 needs to be unlocked in advance, the inner lock liner 32 is rotated after a matched key is inserted, the locking piece 33 and the lock cylinder blocking part 51 are unlocked, the lock cylinder 3 in the initial position can be pressed, the lock cylinder 3 is pressed, the lock cylinder 3 enters the unlocking position, and the unlocking driving part 311 on the lock cylinder sleeve 31 triggers the handle locking component to unlock the handle; after the key lock cylinder is unlocked, the handle can still be in a locked state, and the unlocking of the handle is achieved by pressing the lock cylinder, so that the planar lock is more convenient to use; and the lock core is arranged on the handle as an operating piece for unlocking the handle, so that the handle unlocking operating part does not need to be designed independently, and the structure is more compact. The handle 2 is automatically popped out of the handle groove 11 through the elastic piece 2-1, and in the specific embodiment, the elastic piece 2-1 is a torsion spring and has a compact structure.

Based on the design, the unlocking operation in the door can be realized, and the handle locking assembly is provided with an unlocking operation end 6 in the door, which is positioned on the inner side of the lock shell 1 and is used for unlocking the handle 2 by the handle locking assembly. In the room, the unlocking operation of the handle can be completed by unlocking the operation end in the operation door.

In this embodiment, the handle lock assembly includes a locking hook 7 pivotally installed in the lock housing 1, a locking platform 52 is disposed at the lock cylinder mounting hole 21, a hook head 71 of the locking hook 7 can be hooked (as shown in fig. 1 and 2) and detached from the locking platform 52 (as shown in fig. 3 and 4), the locking hook 7 is engaged with an elastic driving member 7-1, the elastic driving member 7-1 is preferably a torsion spring design for easy installation and arrangement, as will be appreciated by those skilled in the art, the elastic driving member can be a tension spring, a compression spring, or the like, the elastic driving member 7-1 provides an elastic locking force for driving the locking hook 7 to swing to a position where the hook head 71 hooks the locking platform 52, and the elastic driving member 7-1 drives the locking hook 7 to stay at a position where the hook head 71 swings into a position corresponding to the position of the locking platform 52 without external driving, and the limitation of the corresponding position where the locking hook 7 is driven by the elastic driving member 7-1 is realized by a limit structure, with the handle 2 buckled into the handle groove 11, the locking table 52 pushes the locking hook 7 to swing to give way until the handle 2 is completely buckled into the handle groove 11, the hook head 71 of the locking hook 7 swings into the position corresponding to the locking table 52 to hook the locking table 52, and the lock cylinder 3 is pressed to slide from the initial position to the unlocking position and pushes one end of the hook head 71 of the locking hook 7 through the unlocking driving part 311, so that the locking hook 7 is driven to swing until the hook head 71 is separated from the locking table 52. The locking and unlocking of the handle are realized by matching the locking hook and the clamping table, the locking hook is driven by the elastic driving piece, the hook head swings into the clamping table to realize the automatic locking of the handle, the lock cylinder is pressed, the lock cylinder sleeve of the lock cylinder is sleeved with the unlocking driving part to push the hook head of the locking hook to drive the locking hook to swing, the hook head is separated from the clamping table to finish the unlocking operation, and the locking device has the advantage of simple and compact structure, the top of the hook head 71 of the locking hook 7 is provided with a driving pushing inclined plane 711, and the pushing inclined plane 711 is used for pushing the unlocking driving part 311 and the clamping table 52; the unlocking driving part 311 is designed by a side convex block with a slope adapted to the pushing slope 711, and the locking platform 52 also has a slope. Of course, as a feasible scheme of the invention, the handle locking assembly can also adopt a design that a swinging sheet swinging transversely is matched with the elastic driving piece, or a design that a sliding sheet sliding transversely is matched with the elastic driving piece, or a design that a clamping hole is designed in the lock shell, a locking part which can stretch and retract in a sliding manner is designed at the position of the lock cylinder mounting seat hole, and the like; but it has the defects of inconvenient structural arrangement, incompact structure and unreliable work.

In the design with the internal unlocking function, that is, the design with the internal unlocking operation end, further, the locking hook 7 is L-shaped, the locking hook 7 comprises a locking hook arm 72 with a hook head 71 and an unlocking arm 73 provided with the internal unlocking operation end 6, and the joint of the locking hook arm 72 and the unlocking arm 73 is pivotally mounted on the lock case 1. The unlocking arm is pressed to achieve the unlocking action of the inner side of the door, and the door has the advantages of simple structure and convenience in installation and arrangement. In the embodiment, the position of the locking hook 7 which swings under the driving of the elastic driving element 7-1 is limited, a blocking edge 731 which is protruded from the unlocking arm 73 is adopted, a button hole for exposing the inner unlocking operation end 6 on the unlocking arm 73 is arranged on the lock shell 1, and the blocking edge 731 blocks with the edge of the button hole, so that the position of the locking hook which swings under the driving of the elastic driving element is limited; of course, the person skilled in the art can also adopt other forms for limiting the swinging position of the component according to the prior art, such as designing an angle limiting structure at the pivoting position of the locking hook; or a projection that directly blocks the latch hook arm, etc.

In this embodiment, the key cylinder blocking portion 51 is a stopping protrusion disposed at the bottom of the key cylinder mounting hole 11, and the locking member 33 is disposed with a stopping portion 331 in stopping engagement with the stopping protrusion and an avoiding portion 332 for avoiding the stopping protrusion along the rotation direction. The inner lock liner is rotated, so that the stopping part of the locking piece corresponds to the stopping protrusion position, the lock cylinder cannot be pressed through the stopping protrusion, the lock cylinder is locked, after a matched key is inserted, the inner lock liner is rotated, the locking piece rotates along with the inner lock liner until the avoiding part corresponds to the stopping protrusion position, the lock cylinder can be pressed, the unlocking operation of the handle is completed, and the handle unlocking device has the advantages of simple and compact structure and reliability in work. The lock core blocking part can also be a bayonet, the locking piece can be a sheet, and the locking piece is clamped in and withdrawn from the bayonet along with the rotation of the inner lock liner to realize the unlocking and locking operation of the lock core; the locking piece can also be a cam, a blocking lug is protruded above the low-level surface of the cam, and the lock cylinder blocking part is a telescopic lock rod and the like; but with the design of the specific implementation mode, the structure is simple and the work is reliable. In order to ensure the reliability of the work, a pair of oppositely arranged stop bulges are arranged in the lock cylinder mounting seat hole 21, the stop bulges are connected into an annular bulge through a convex block, a special-shaped concave hole surrounded by the annular bulge is formed at the bottom of the lock cylinder mounting seat hole, and the annular bulge can be used for positioning the reset spring.

In this embodiment, the handle 2 is provided with a pivot lug 22, the lock case 1 is rotatably matched with a linkage rotating shaft 8, the pivot lug 22 is sleeved on the linkage rotating shaft 8 and is in linkage connection with the linkage rotating shaft 8, and the linkage rotating shaft 8 is connected with a transmission part 9. The handle rotates to directly drive the transmission part through the linkage rotating shaft, so that the door lock is opened, and the door lock has the advantage of simple operation. The transmission part comprises a forked lever, and one side, opposite to the two fork arms, of the lever is fixedly connected with the linkage rotating shaft. Of course, there are other driving modes of the handle lock in the lock, such as sliding pushing, etc.

In order to improve the sealing performance of the lock, the handle groove 11 comprises a main groove body 111 facing the notch a of the handle groove 11 and an inner groove cavity 112 staggered with the notch a, an annular sealing gasket 13 is arranged on the edge of the notch a of the handle groove 11 on the lock shell 1, the handle 2 comprises a handle panel 23 covering the notch a of the handle groove 11 when the handle 2 is buckled into the handle groove 11, the handle panel 23 is in sealing fit with the annular sealing gasket 13, a pivoting lug 22 is arranged at the bottom of the handle panel 23, the pivoting lug 22 extends into the inner groove cavity 112, a hole cover of the lock cylinder mounting seat hole 21 is provided with a rubber end cover 2-2 for sealing the lock cylinder to cover the hole 21 of the lock cylinder and open the hole 21 of the lock cylinder mounting seat hole, an annular groove 24 is encircled around the hole of the lock cylinder mounting seat hole 21, the rubber end cover 2-2 comprises a cover plate 2-21 covering the hole 21 of the lock cylinder mounting seat hole, an annular sealing convex edge 2-22 inserted into the annular groove 24 is protruded from the bottom surface of the cover plate 2-21, the annular sealing flange 2-22 is in contact sealing fit with the wall of the annular groove 24, and the rubber end cover 2-2 can be elastically deformed to press the cover plate of the rubber end cover 2-2 to press the lock cylinder. After the handle is buckled into the handle groove, the handle panel covers the notch of the handle groove in a sealing mode, the position of the lock cylinder on the handle is shielded and sealed through the rubber end cover, so that the lock shell and the handle are in contact with water and dust, and other parts are almost in an isolation state with the outside, so that the performances of water resistance, dust resistance, salt fog and the like are more outstanding, and the lock cylinder is in a locking state, the rubber elastic deformation capacity of the rubber end cover is utilized, the lock cylinder can be pressed by directly pressing the rubber end cover, and the unlocking action is completed. An annular sealing groove is further formed in the inner wall of the annular groove, and an annular sealing convex rib which is in sealing fit in the annular sealing groove is arranged on the annular sealing convex edge, so that the rubber end cover is more reliable in sealing.

In order to ensure that the rubber end cover is still arranged on the handle when the rubber end cover is opened, the bottom of the annular groove 24 is provided with a connecting hole 241, the annular sealing convex edge 2-22 is convexly provided with a connecting column 2-23 inserted into the connecting hole 241, and the connecting column 2-23 is provided with an anti-falling barb 2-231 for preventing the connecting column 2-23 from falling out of the connecting hole 241. The rubber end cover is more convenient to install and use. Of course, the anti-disengaging structure of the rubber end cover can also be a screw fixing structure, an elastic ring and the like.

In this embodiment, the lock cylinder mounting seat hole 21 includes a through hole surrounded by a main seat body 211 integrally formed on the handle 2, a bottom cover 5 covering a bottom end opening of the through hole is disposed on the main seat body 211, the return spring 4 is a coil spring supported on the bottom cover 5, the locking platform 52 is disposed on the bottom cover 5, an axial limiting end face 2111 is disposed in the through hole, and a stopping step 312 matched with the axial limiting end face 2111 is disposed on the lock cylinder sleeve 31. The lock cylinder has the advantages of convenience in processing and installation. Wherein, the backstop bulge is also arranged on the bottom cover. The bottom cover is fixed on the handle through a screw.

According to the planar lock, after the key lock cylinder is unlocked, the lock cylinder 3 and the inner unlocking operation end 6 can be pressed to realize indoor and outdoor unlocking operation, so that the unlocking is realized by directly pressing the rubber end cover 2-2, and when anti-theft locking is required, the operation needing the key is adopted, so that the planar lock has the advantage of convenience in use; after the handle is buckled into the handle groove, only the end face of the lock shell and the handle panel are exposed, the outdoor dustproof and waterproof performance of the lockset is good, and the service life of the lockset is prolonged.

Claims

1. The utility model provides a plane lock, includes lock shell, handle and lock core, and lock shell outside end face is equipped with the handle groove, and handle one end pivot is adorned on the lock shell, and the handle other end can be detained into the handle groove, and the handle is detained and is served and be equipped with the lock core mount pad hole that supplies the lock core installation, and the lock core includes lock core cover, location normal running fit at the interior lock courage of lock core cover and along with interior lock courage pivoted locking piece, its characterized in that: the lock cylinder sleeve is axially and slidably matched in the lock cylinder mounting seat hole, the lock cylinder is provided with an initial position and an unlocking position in the lock cylinder mounting seat hole along a pressing direction, the lock cylinder sleeve is correspondingly matched with a reset spring for driving the lock cylinder to automatically bounce to the initial position, a lock cylinder blocking part is arranged in the lock cylinder mounting seat hole, and a locking part is locked and unlocked by the lock cylinder blocking part, so that locking and unlocking of the lock cylinder at the initial position are realized.

2. The planar lock of claim 1, wherein: the handle locking assembly is provided with an in-door unlocking operation end which is positioned on the inner side of the lock shell and used for unlocking the handle locking assembly to the handle, and the handle automatically pops out of the handle groove through an elastic piece.

3. The planar lock of claim 2, wherein: the handle locking assembly comprises a locking hook which is pivoted in the lock shell, a clamping table is arranged at a hole of the lock core mounting seat, a hook head of the locking hook can be hooked and separated from the clamping table, the locking hook is matched with an elastic driving piece, the elastic driving piece provides elastic locking force for driving the locking hook to swing to a position where the hook head hooks the clamping table, the clamping table pushes the locking hook to swing to give way until the handle is completely buckled into the handle groove, the hook head of the locking hook swings into a corresponding position of the clamping table to hook the clamping table, and the lock core is pressed to slide from an initial position to an unlocking position and pushes one end of the hook head of the locking hook through an unlocking driving part, so that the locking hook is driven to swing to the hook head to be separated from the clamping table.

4. The planar lock of claim 3, wherein: the locking hook is L-shaped, the locking hook comprises a locking hook arm with a hook head and an unlocking arm provided with the inner unlocking operation end, and the connecting part of the locking hook arm and the unlocking arm is pivoted on the lock shell.

5. The planar lock of claim 3, wherein: the lock cylinder mounting seat hole comprises a through hole which is formed by enclosing a main seat body integrally formed on the handle, a bottom cover covering the bottom end opening of the through hole is arranged on the main seat body, the reset spring is a spiral spring supported on the bottom cover, the clamping table is arranged on the bottom cover, an axial limiting end face is arranged in the through hole, and a stopping step matched with the axial limiting end face in a stopping way is arranged on the lock cylinder sleeve.

6. A flat lock as claimed in claim 1, 2, 3, 4 or 5, wherein: the lock cylinder blocking part is a stopping protrusion arranged at the bottom of the lock cylinder mounting hole, and the blocking part is provided with a blocking part matched with the stopping protrusion in a stopping way and an avoiding part for avoiding the stopping protrusion in the rotating direction.

7. A flat lock as claimed in claim 1, 2, 3, 4 or 5, wherein: the handle is provided with a pivoting lug, the lock shell is rotatably matched with a linkage rotating shaft, the pivoting lug is sleeved on the linkage rotating shaft and is in linkage connection with the linkage rotating shaft, and the linkage rotating shaft is connected with a transmission part.

8. The planar lock of claim 7, wherein: the handle groove comprises a main groove body facing the notch of the handle groove and an inner groove cavity staggered with the notch, an annular sealing gasket is arranged on the edge of the notch of the handle groove on the lock shell, the handle comprises a handle panel covering the notch of the handle groove when the handle is buckled into the handle groove, the handle panel is in sealing fit with the annular sealing gasket, the pin joint lug is arranged at the bottom of the handle panel, the pin joint lug extends into the inner groove cavity, the hole cover of the lock cylinder mounting seat hole is provided with a rubber end cover for sealing and covering the hole opening of the lock cylinder mounting seat hole and opening the hole opening of the lock cylinder mounting seat hole, the hole of the lock cylinder mounting seat hole is surrounded with an annular groove, the rubber end cover comprises a cover plate covering the hole of the lock cylinder mounting seat hole, an annular sealing convex edge inserted into the annular groove is arranged on the bottom surface of the cover plate in a protruding mode, the annular sealing convex edge is in contact sealing fit with the annular groove wall, and the rubber end cover can elastically deform to press the cover plate of the rubber end cover to press the lock cylinder.

9. The planar lock of claim 8, wherein: the annular groove bottom is equipped with the connecting hole, and annular seal chimb arch has the spliced pole of inserting the connecting hole, is equipped with the anticreep barb that prevents the spliced pole and deviate from the connecting hole on the spliced pole.