Handle door lock

Abstract

The utility model relates to a handle door lock which comprises a square strip, an inner panel, an outer panel, an inner handle, an outer handle and a counter locking device, the counter locking device is composed of a rotating counter locking assembly and a driving assembly, the rotating counter locking assembly comprises a driving rotating shaft and a locking shaft sleeve, the locking shaft sleeve is provided with a clamping block, the inner panel is provided with a clamping groove, and the driving rotating shaft is driven by the driving assembly to rotate. The door lock is particularly suitable for occasions needing convenient external unlocking and high safety, accurate positioning of the clamping block is achieved through the limiting sliding groove and the elastic piece of the inner handle, the reliability of back locking is guaranteed, and through the design of the receding hole in the square strip and the unlocking hole in the outer handle, the safety of the door lock is improved. And external tools are allowed to be used for quick unlocking, so that the safety is improved. In addition, a detachable shell cover on the outer handle forms a key cavity, the concealment and attractiveness of the lock body are improved, meanwhile, the operation process is simplified, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of door locks, in particular to a handle door lock. Background Art

[0002] A door lock is a commonly used door protection device to prevent illegal intrusion. It usually includes an inner base and an outer base installed on the inner and outer sides of the door panel. An inner handle and an outer handle are respectively rotatably arranged on the inner base and the outer base. Generally, people can drive the lock tongue in the door frame to retract into the lock body by pressing and rotating the inner handle or the outer handle, so as to achieve the purpose of opening the door.

[0003] In order to prevent people outside the door from unlocking by rotating the outer handle, a locking component is arranged on the outer handle to lock the outer handle on the outer base, so as to improve the privacy inside the room. One end of the locking component is linked with the lock core on the outer handle, and the other end is linked with the anti-lock component on the inner handle through a linkage rod. So that people outside the door need to use a key to open the lock core to unlock, while people inside the door can operate the anti-lock component to lock and unlock the door lock. Therefore, the anti-lock component is an important accessory of the door lock with relatively frequent operations.

[0004] The existing Chinese utility model patent with the publication number of CN221096105U discloses an anti-lockable door handle, which includes a square bar, an inner panel, an outer panel, an outer handle, an inner handle, and a knob. The knob is linked with a rotatable rotating shaft installed inside the inner handle. A sliding seat that rotates coaxially with the inner handle is sleeved outside the rotating shaft. A rotating and sliding structure is arranged between the sliding seat and the rotating shaft, which can drive the sliding seat to slide along the axis direction of the square bar when the rotating shaft rotates to control the conversion between the connected and unconnected states of the sliding seat and the inner panel. The beneficial effects of the utility model are: to provide an anti-lockable door handle, which can achieve the basic anti-lock function. On the basis of realizing the anti-lock function, it also has a simple transmission structure, without the need to install multiple components, and the assembly is relatively convenient. However, the door lock knob in this structure is located on the surface of the door handle, which is too easy to operate. And due to the nature of children who love to explore by moving around, there is a problem that they may lock themselves inside the house. Moreover, the door lock knob is located on the surface of the door body, and when people pass by, it is very easy to be scratched by the door lock knob. And since the key is usually placed separately from the lock body, it is difficult to find and easy to lose. What is needed is a handle door lock that can be quickly unlocked externally after a child locks himself. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a handle door lock aiming at the deficiencies of the above-mentioned prior art, so that users outside the door can conveniently unlock by inserting the unlocking part hidden inside the handle into the lock body, with convenient external unlocking.

[0006] To achieve the above object, the present utility model provides the following technical solution: A handle lock includes a square bar, an inner panel and an outer panel for mounting on a door body. The outer panel is rotatably connected with an outer handle, and the inner panel is rotatably connected with an inner handle. One end of the square bar is linked with the inner handle and the other end is linked with the outer handle. An anti-lock device is provided at the inner handle. The anti-lock device includes a rotary anti-lock assembly and a driving assembly. The rotary anti-lock assembly includes a driving rotary shaft linked with the driving assembly and a locking shaft sleeve sleeved outside the driving rotary shaft. At least one set of clamping blocks is provided at one end of the locking shaft sleeve facing the inner panel. A clamping groove corresponding to the position of the clamping block is provided on the inner panel. A limiting sliding groove for the clamping block to approach or move away from the clamping groove is provided on the inner handle corresponding to the clamping block. An elastic member for urging the locking shaft sleeve to move towards the driving rotary shaft is provided between the inner panel and the clamping block. An active rotary inclined surface is provided at one end of the driving rotary shaft corresponding to the locking shaft sleeve and is inclined along one end of the locking shaft sleeve. A corresponding driven rotary inclined surface is provided on the locking shaft sleeve corresponding to the active rotary inclined surface. The driving assembly drives the driving rotary shaft to rotate, so as to drive the clamping block at the locking shaft sleeve to abut against or separate from the clamping groove on the inner panel. A relief hole for the unlocking member to pass through is formed in the square bar. An unlocking hole for cooperating with the unlocking member to rotate is provided at one end of the driving rotary shaft corresponding to the outer handle. The relief hole penetrates through the square bar and is respectively communicated with the unlocking hole and the outer handle at both ends.

[0007] With the above technical solution, the handle lock includes inner and outer panels, a square bar, inner and outer handles and an anti-lock device. The anti-lock device is composed of a rotary anti-lock assembly and a driving assembly. The rotary anti-lock assembly includes a driving rotary shaft and a locking shaft sleeve. Clamping blocks are provided on the locking shaft sleeve, and corresponding clamping grooves are provided on the inner panel. Driven by the driving assembly, the driving rotary shaft rotates, so that the clamping blocks of the locking shaft sleeve abut against or separate from the clamping grooves on the inner panel, realizing the anti-lock or unlocking of the door lock. When anti-locking is required, the driving assembly drives the driving rotary shaft to rotate. Since the locking shaft sleeve is sleeved on the driving rotary shaft and the clamping blocks are restricted by the limiting sliding grooves and cannot rotate, when the active rotary inclined surface rotates, it will only cause the locking shaft sleeve to move along the axis direction of the driving rotary shaft, pushing the clamping blocks into the clamping grooves on the inner panel. At this time, part of the clamping blocks are restricted in the limiting sliding grooves and part are restricted in the clamping grooves, restricting the rotation of the inner and outer handles and completing the anti-lock. When unlocking is required, only an unlocking member needs to be inserted at the position of the outer handle. The unlocking member passes through the relief hole in the square shaft and then is inserted into the unlocking hole of the driving rotary shaft, enabling the user to rotate the unlocking member at the position of the outer handle to drive the driving rotary shaft to rotate back, and driving the clamping blocks to disengage from the clamping grooves through the elastic restoring force of the elastic member, completing the external unlocking. The accurate positioning of the clamping blocks is realized through the limiting sliding grooves and elastic members on the inner handle, ensuring the reliability of the anti-lock. At the same time, the design of the relief hole in the square bar and the unlocking hole on the outer handle allows the use of external tools for quick unlocking, improving the safety, and the lock body has a simple structure and convenient operation.

[0008] The above-mentioned handle door lock can be further configured as follows: a detachable shell cover is provided at the outer handle, and a key cavity for accommodating an unlocking member is provided between the shell cover and the outer handle.

[0009] By adopting the above technical solution, a detachable shell cover is added to the outer handle, and a key cavity is formed between the shell cover and the outer handle for accommodating the unlocking member, thereby avoiding the unlocking tool from being lost or difficult to find.

[0010] The above-mentioned handle door lock can be further configured as follows: an insert block is provided at one end of the shell cover, and an elastic buckle is provided at the other end; a slot for inserting the insert block is provided at one end of the outer handle, and a slot for engaging the elastic buckle is provided at the other end.

[0011] By adopting the above technical solution, the shell cover is connected to the external handle through an insert block and an elastic buckle, providing a quick disassembly and assembly mechanism, simplifying the installation and disassembly process of the shell cover, improving the ease of use, and hiding the unlocking parts to improve concealment and aesthetics.

[0012] The above-mentioned handle door lock can be further configured as follows: the unlocking member includes an unlocking plate and a hand-driven part, the unlocking plate is a plate-type structure, the giving way hole is a round hole, and the unlocking hole is a strip hole adapted to the unlocking plate.

[0013] By adopting the above technical solution, the unlocking member is composed of an unlocking plate and a hand-driven part. The unlocking plate is a plate-type structure, which is in accordance with the circular hole shape in the square bar to avoid interference with the square shaft and realize quick unlocking.

[0014] The above-mentioned handle door lock can be further configured as follows: an active locking surface and an active unlocking surface are provided on one end of the active rotating shaft close to the locking sleeve, the active rotating inclined surface is arranged between the active locking surface and the active unlocking surface, and there is a height difference between the active locking surface and the active unlocking surface along the axial direction of the active rotating shaft; a driven locking surface and a driven unlocking surface adapted to the active locking surface and the active unlocking surface are provided on the locking sleeve, the driven rotating inclined surface is arranged between the driven locking surface and the driven unlocking surface, and the active rotating inclined surface can rotate and slide along the driven rotating inclined surface, thereby controlling the locking sleeve to approach or move away from the active rotating shaft.

[0015] By adopting the above technical solution, an active locking surface and an active unlocking surface are provided on the active rotating shaft, which are matched with the driven locking surface and the driven unlocking surface on the locking sleeve. Through the interaction between the active rotating bevel and the driven rotating bevel, the position of the locking sleeve is controlled to achieve reverse locking or unlocking, thereby increasing the operational flexibility and accuracy of the door lock.

[0016] The above-mentioned handle door lock can be further configured as follows: the active locking surface is configured as an arc-shaped bayonet, and the passive locking surface is configured as an arc-shaped clamping block that cooperates with the arc-shaped bayonet to be clamped.

[0017] With the above technical solution, the active locking surface is an arc-shaped bayonet, and the driven locking surface is an arc-shaped clamping block for mating connection. Locking is achieved through this shape matching, and the anti-lock state can be maintained by the cooperation of the arc-shaped clamping block and the arc-shaped bayonet, improving the stability of the door lock.

[0018] The above-mentioned handle door lock can be further configured as: the driving assembly includes an anti-lock plate arranged at the inner handle, one end of the anti-lock plate extends to the active rotating shaft and is in linkage cooperation with it, the other end is provided with a driving piece, the inner handle is provided with a driving groove for accommodating the driving piece, and the driving piece is arranged to move up and down in the driving groove, thereby driving the active rotating shaft to rotate.

[0019] With the above technical solution, the driving assembly includes an anti-lock plate and a driving piece. The anti-lock plate is in linkage with the active rotating shaft, and the driving piece moves in the driving groove to drive the active rotating shaft to rotate, realizing the mechanism of locking or unlocking the door lock and simplifying the operation process.

[0020] The above-mentioned handle door lock can be further configured as: the anti-lock plate is slidably arranged in the inner handle, and a rack portion is provided at one end facing the active rotating shaft. A gear portion meshing with the rack portion is provided on the active rotating shaft, and the active rotating shaft is driven to rotate by sliding the driving piece up and down.

[0021] With the above technical solution, the anti-lock plate is slidably arranged in the inner handle, one end is meshed with the gear portion on the active rotating shaft, and the active rotating shaft is driven to rotate by the sliding of the driving piece, realizing precise control of the internal mechanical transmission, improving the response speed of the door lock and the convenience of operation.

[0022] The above-mentioned handle door lock can be further configured as: the driving groove is arranged on the outer wall of the inner handle at the end facing the outer handle.

[0023] With the above technical solution, the driving groove is arranged on the outer wall of the inner handle at the end facing the outer handle, which is convenient for operation, and the anti-lock structure is hidden inside to prevent children from hitting it, improving safety.

[0024] The above-mentioned handle door lock can be further configured as: a stop block is provided on one side of the anti-lock plate, at least two arc-shaped grooves capable of engaging with the stop block are provided on the inner handle corresponding to the driving groove, and the arc-shaped grooves are distributed at intervals. A relief groove is provided on the anti-lock plate near the stop block.

[0025] With the above technical solution, a stop block is provided on one side of the anti-lock plate, arc-shaped grooves are provided on the inner handle corresponding to the driving groove, the stop block engages with the arc-shaped grooves, and a relief groove is provided on the anti-lock plate to adapt to the relief, increasing the stability of the anti-lock plate, preventing misoperation, improving the safety of the door lock, and giving feedback on the state of the anti-lock plate.

[0026] The beneficial effects of the present utility model are:

[0027] 1. The handle lock of the present utility model provides a fast external unlocking mechanism, allowing users to insert an unlocking member through the key cavity of the outer handle to achieve convenient and fast unlocking, effectively coping with emergencies, and at the same time avoiding the inconvenience caused by complex operations or lack of tools in traditional door locks.

[0028] 2. The handle lock of the present utility model accurately positions the latch through the limit chute and elastic member of the inner handle, ensuring the reliability of anti-locking. The design of the relief hole in the square bar and the unlocking hole on the outer handle, combined with the cooperation of the stop block and the arc groove, not only improves the safety of the door lock, prevents misoperation, but also enhances the stability of the door lock, and can maintain performance even under frequent use.

[0029] 3. The detachable housing design of the outer handle of the handle lock of the present utility model not only hides the unlocking tool, increases the concealment and aesthetics of the lock body, avoids the loss and difficulty of finding the key, but also the setting of the locking surface and unlocking surface on the active rotating shaft, combined with the corresponding inclined surface design, increases the operation flexibility and accuracy of the door lock, enabling users to easily achieve anti-locking or unlocking according to needs.

[0030] The following further describes the present utility model with reference to the accompanying drawings. Description of the Drawings

[0031] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present utility model.

[0032] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the present utility model in the normal state.

[0033] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the present utility model during the unlocking process in the anti-locked state.

[0034] Figure 4 It is a three-dimensional schematic diagram of the inner handle of an embodiment of the present utility model.

[0035] Figure 5 It is a schematic diagram of the internal structure of the outer handle of an embodiment of the present utility model.

[0036] Figure 6 It is a three-dimensional schematic diagram of the rotary anti-locking assembly of an embodiment of the present utility model.

[0037] Figure 7 It is a three-dimensional schematic diagram of the anti-locking device of an embodiment of the present utility model in the locked state.

[0038] Figure 8 It is a three-dimensional schematic diagram of the drive assembly of an embodiment of the present utility model.

[0039] Figure 9Schematic perspective view of the drive assembly according to an embodiment of the present utility model Figure 2 。 Embodiment

[0040] As Figure 1 - Figure 9 shown, a handle lock includes a square bar 1, an inner panel 2 for mounting on a door body, and an outer panel 3. The outer panel 3 is rotatably connected to an outer handle 5, and the inner panel 2 is rotatably connected to an inner handle 4. One end of the square bar 1 is linked to the inner handle 4, and the other end is linked to the outer handle 5. The inner handle 4 and the outer handle 5 are respectively reset after rotation by an elastic torsion spring 50. The elastic torsion spring 50 is installed on the inner panel 2 and the outer panel 3 through a clamp 501. An anti-lock device is provided at the inner handle 4. The anti-lock device includes a rotary anti-lock assembly and a drive assembly. The rotary anti-lock assembly includes a driving rotary shaft 6 linked to the drive assembly and a locking shaft sleeve 7 sleeved outside the driving rotary shaft 6. Two locking blocks 71 are provided at one end of the locking shaft sleeve 7 facing the inner panel 2. A card slot 21 corresponding to the position of the locking blocks 71 is provided on the inner panel 2. A limit sliding groove 41 for the locking blocks 71 to approach or move away from the card slot 21 is provided at the inner handle 4 corresponding to the locking blocks 71. A spring 22 for urging the locking shaft sleeve 7 to move towards the driving rotary shaft 6 is provided between the inner panel 2 and the locking blocks 71. One end of the driving rotary shaft 6 close to the locking shaft sleeve 7 is provided with a driving locking surface 61, a driving unlocking surface 62, and a driving rotary inclined surface 63 inclined along one end of the locking shaft sleeve 7 and arranged between the driving locking surface 61 and the driving unlocking surface 62. There is a height difference between the driving locking surface 61 and the driving unlocking surface 62 along the axis direction of the driving rotary shaft 7. The locking shaft sleeve 7 is provided with a driven locking surface 72, a driven unlocking surface 73, and a driven rotary inclined surface 74 adapted to the driving locking surface 61, the driving unlocking surface 62, and the driving rotary inclined surface 63. The driving locking surface 61 is set as an arc-shaped bayonet 611, and the driven locking surface 72 is set as an arc-shaped block 721 that cooperates with the arc-shaped bayonet 611 for clamping. The driving rotary inclined surface 63 can rotate and slide along the driven rotary inclined surface 74, thereby controlling the locking shaft sleeve 7 to approach or move away from the driving rotary shaft 6. The drive assembly drives the driving rotary shaft 6 to rotate, driving the locking blocks 71 at the locking shaft sleeve 7 to abut against or separate from the card slot 21 on the inner panel 2. When the driving locking surface 61 abuts against the driven unlocking surface 73, at this time the driven rotary inclined surface 74 is in contact with the driving rotary inclined surface 63, and the locking blocks 71 are separated from the card slot 21, and the door lock is in the unlocked state. When the driving locking surface 61 abuts against the driven locking surface 72, the arc-shaped block 721 is clamped with the arc-shaped bayonet 611. At this time, the locking blocks 71 are in plug-in fit with the card slot 21, and the door lock is in the locked state;

[0041] As Figures 2 - 9As shown, the driving assembly includes an anti-locking plate 9 arranged at the inner handle 2, one end of the anti-locking plate 9 extends to the active rotating shaft 6 and is provided with a rack portion 91, and the other end is provided with a driving plate 92. A driving groove 42 for accommodating the driving plate 9 is opened at one end of the side wall of the inner handle 3 facing the outer handle 5, and a gear portion 65 meshing with the rack portion 91 is provided on the active rotating shaft 6. The anti-locking plate 9 is slidably arranged in the inner handle 2, and the driving plate 92 is arranged in the driving groove 42 and moves up and down, thereby driving the active rotating shaft 6 is rotated, a stop block 93 is provided on one side of the anti-locking plate 9, and at least two arc grooves (not shown in the figure) capable of engaging with the stop block 93 are provided at the inner handle 2 corresponding to the driving groove 42, and the arc grooves are distributed at intervals, and a clearance groove 94 is provided near the stop block 93 of the anti-locking plate 9. The setting of the clearance groove 94 enables the stop block 93 to have a deformation force, so that the stop block 93 can enter the arc groove for engagement during the up and down movement, giving tactile feedback, and maintaining the locked or unlocked state, thereby improving stability.

[0042] like Figures 2 - 9 As shown, a clearance hole 11 for the key 8 to pass through is provided in the square bar 1, an unlocking hole 64 for rotating with the key 8 is provided at one end of the active rotating shaft 6 corresponding to the outer handle 5, the clearance hole 11 runs through the square bar 1, and the two ends are respectively connected with the unlocking hole 64 and the key cavity 50 of the outer handle 5, a detachable shell cover 51 is provided at the outer handle 5, a key cavity 50 for accommodating the key 8 is provided between the shell cover 51 and the outer handle 5, an insert block 511 is provided at one end of the shell cover 51, and an elastic buckle 512 is provided at the other end, a slot 52 for inserting the insert block 511 is provided at one end of the outer handle 5, and a slot 52 for inserting the elastic buckle is provided at the other end 512 is engaged with the card slot 53, the key 8 includes an unlocking plate 81 and a hand-driven part 82, the unlocking plate 8 is a plate structure, the giving hole 11 is a round hole, and the unlocking hole 64 is a strip hole adapted to the unlocking plate 81. The shell cover 51 and the outer handle 5 are detachably connected through the elastic buckle 512, which is used to place the key 8 in the key cavity 50 to avoid loss and search, and to open the door in the first time. When unlocking, it is only necessary to insert the key 8 into the unlocking hole 64 through the giving hole 11. At this time, turning the key 8 can drive the active rotating shaft 6 to rotate, and the locking sleeve 7 is reset by the spring 22 to complete the unlocking.

[0043] Locking workflow under normal conditions

[0044] Under normal conditions, the inner door handle 4 and the outer door handle 5 can be rotated. At this time, locking is performed through the anti-lock plate 9 of the inner door handle 4. The driving assembly includes the anti-lock plate 9 and the driving piece 92. The anti-lock plate 9 meshes with the gear portion 65 on the active rotating shaft 6. The driving piece 92 moves up or down in the driving groove 42 of the inner door handle 4, driving the active rotating shaft 6 to rotate. As the active rotating shaft 6 rotates, the active rotating inclined surface 63 can rotate and slide along the driven rotating inclined surface 74, thereby controlling the engagement of the arc-shaped block 721 and the arc-shaped bayonet 611. At this time, the locking shaft sleeve 7 will approach the inner panel 2, so that the block 71 is inserted into the card slot 21. At this time, part of the block 71 is restricted in the limit chute 41 and part is restricted in the card slot 22, restricting the rotation of the inner door handle 4 and the outer door handle 5, and completing the anti-lock. At this time, both the inner door handle 4 and the outer door handle 5 are locked and cannot be rotated.

[0045] Emergency unlocking process in the locked state

[0046] When the door is in the locked state and the user needs to unlock it emergently, the user takes out the key 8 from the key cavity 50 in the detachable housing 51 of the outer door handle 5, inserts one end of the unlocking piece into the relief hole 11 on the square bar 1 until the unlocking hole 64 is aligned, and the user rotates the key 8. Through the unlocking hole 64, the active rotating shaft 6 is driven to rotate back. As the active rotating shaft 6 rotates back, the active locking surface 61 abuts against the driven unlocking surface 73. The block 71 on the locking shaft sleeve 7 disengages from the card slot 21 on the inner panel 2 under the action of the spring 22. After the block 71 disengages from the card slot 21, the locking shaft sleeve 7 is reset along the axis direction of the active rotating shaft 6 under the push of the spring 22. After the locking shaft sleeve 7 and the block 71 are reset, the locked state of the inner door handle 4 and the outer door handle 5 is released, and the door can be opened normally, which is convenient for the user to unlock the door immediately through the key 8 in the key cavity 50 when a child accidentally locks the door.

Claims

1. A handle lock, comprising a square bar, an inner panel and an outer panel for mounting on a door body. The outer panel is rotatably connected with an outer handle, the inner panel is rotatably connected with an inner handle, one end of the square bar is linked with the inner handle and the other end is linked with the outer handle. An anti-lock device is provided at the inner handle, and it is characterized in that: The anti-locking device includes a rotary anti-locking assembly and a driving assembly. The rotary anti-locking assembly includes a driving rotary shaft linked with the driving assembly and a locking sleeve sleeved outside the driving rotary shaft. At least one set of clamping blocks is provided at one end of the locking sleeve facing the inner panel. Corresponding clamping grooves are provided on the inner panel at positions corresponding to the clamping blocks. A limiting sliding groove for the clamping blocks to approach or move away from the clamping grooves is provided on the inner handle corresponding to the clamping blocks. An elastic member is provided between the inner panel and the clamping blocks to urge the locking sleeve to move towards the driving rotary shaft. One end of the driving rotary shaft corresponding to the locking sleeve is provided with a driving rotary inclined surface inclined along one end of the locking sleeve. A corresponding driven rotary inclined surface is provided on the locking sleeve corresponding to the driving rotary inclined surface. The driving assembly drives the driving rotary shaft to rotate, driving the clamping blocks at the locking sleeve to abut against or separate from the clamping grooves on the inner panel. A relief hole for the unlocking member to pass through is formed in the square bar. One end of the driving rotary shaft corresponding to the outer handle is provided with an unlocking hole for cooperating with the unlocking member to rotate. The relief hole penetrates the square bar and is respectively communicated with the unlocking hole and the outer handle at both ends.

2. The handle lock according to claim 1, characterized in that: A detachable housing cover is provided at the outer handle, and a key cavity for accommodating the unlocking member is provided between the housing cover and the outer handle.

3. The mortise lock according to claim 2, characterized in that: One end of the housing cover is provided with an insertion block, and the other end is provided with an elastic buckle. One end of the outer handle is provided with a slot for the insertion block to be inserted, and the other end is provided with a clamping groove for the elastic buckle to be buckled.

4. The handle lock according to claim 3, characterized in that: The unlocking member includes an unlocking plate and a hand driving part. The unlocking plate is of a plate structure. The relief hole is a round hole, and the unlocking hole is a strip-shaped hole adapted to the unlocking plate.

5. A handle lock according to any one of claims 1-4, characterized in that: One end of the driving rotary shaft close to the locking sleeve is provided with a driving locking surface and a driving unlocking surface. The driving rotary inclined surface is arranged between the driving locking surface and the driving unlocking surface. There is a height difference between the driving locking surface and the driving unlocking surface along the axis direction of the driving rotary shaft. The locking sleeve is provided with a driven locking surface and a driven unlocking surface adapted to the driving locking surface and the driving unlocking surface. The driven rotary inclined surface is arranged between the driven locking surface and the driven unlocking surface. The driving rotary inclined surface can rotate and slide along the driven rotary inclined surface, thereby controlling the locking sleeve to approach or move away from the driving rotary shaft.

6. The handle lock according to claim 5, wherein: The driving locking surface is set as an arc-shaped bayonet, and the driven locking surface is set as an arc-shaped clamping block adapted to be clamped with the arc-shaped bayonet.

7. The handle lock according to claim 5, characterized in that: The driving assembly includes an anti-locking plate arranged at the inner handle. One end of the anti-locking plate extends to the driving rotary shaft to be linked and cooperated with it, and the other end is provided with a driving piece. A driving groove for accommodating the driving piece is formed in the inner handle. The driving piece is arranged to move up and down in the driving groove, thereby driving the driving rotary shaft to rotate.

8. The handle lock according to claim 7, wherein: The anti-locking plate is slidably arranged in the inner handle, and a rack part is provided at one end facing the driving rotary shaft. A gear part meshing with the rack part is provided on the driving rotary shaft, and the driving rotary shaft is driven to rotate by sliding the driving piece up and down.

9. The handle lock according to claim 8, characterized in that: The driving groove is arranged at the outer wall of one end of the inner handle facing the outer handle.

10. The handle lock according to claim 8, characterized in that: A stop block is provided on one side of the anti-locking plate. At least two arc-shaped grooves capable of being clamped with the stop block are provided on the inner handle corresponding to the driving groove, and the arc-shaped grooves are distributed at intervals. A relief groove is provided on the anti-locking plate close to the stop block.

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