CN113236044B

CN113236044B - Door lock

Info

Publication number: CN113236044B
Application number: CN202110715962.5A
Authority: CN
Inventors: 李保福; 李启平; 杨绍华; 张永成
Original assignee: Zhuhai Youte IoT Technology Co Ltd
Current assignee: Zhuhai Unitech Power Technology Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-04-26
Anticipated expiration: 2041-06-25
Also published as: CN113236044A

Abstract

The application provides a door lock, belongs to tool to lock technical field. The door lock comprises a rear handle, a front handle, an unlocking device and a manual operation device. The rear handle is connected with a rotating shaft. The front handle is used for driving the rotating shaft to rotate when the front handle is in a gear engaging state and rotates along the first direction from the reference position. The unlocking device is arranged on the front handle and comprises a first clutch piece, a second clutch piece and a driving mechanism, the second clutch piece is fixed on the rotating shaft, and the driving mechanism is used for driving the first clutch piece to be combined with or separated from the second clutch piece. A manually operable means is provided on the rear handle for releasably locking the second clutch with the front handle. And the front handle is also used for driving the manual operation device to act when the front handle rotates in the direction opposite to the first direction from the reference position, so that the manual operation device releases the second clutch piece from the front handle. The door lock with the structure can switch the manual operation device from a locking state to a releasing state through the front handle outdoors so as to facilitate the outdoor door locking of a user.

Description

Door lock

Technical Field

The application relates to the technical field of locks, in particular to a door lock.

Background

Indoor lock on the existing market generally adopts the free mode realization locking of handle before the lock or preceding handle, simultaneously, sets up manual operation device on the part that the lock is located indoor, lets preceding handle be in the state of putting into gear or free state through manual operation device selection after opening the door. If the front handle is in a gear engaging state, the door lock is in the gear engaging state, and the door lock can be unlocked by pressing down the front handle, so that the door can be opened; if the front handle is in the free state, the door lock is in the free state, and the door lock cannot be unlocked by pressing down the front handle. The door lock with the structure can only change the state of the manual control mechanism indoors to switch the front handle from the gear engaging state to the free state, and can not meet the requirements of users.

Disclosure of Invention

The embodiment of the application provides a door lock to improve the technical problem.

The embodiment of the application provides a door lock, which comprises a door body; the rear handle is connected with the rotating shaft and used for driving the rotating shaft to rotate along a first direction so as to unlock the door lock; the front handle is used for driving the rotating shaft to rotate when the front handle is in the gear engaging state and rotates along the first direction from the reference position so as to unlock the door lock, and the front handle can rotate along the first direction relative to the rotating shaft when the front handle is in the free state; the unlocking device is arranged on the front handle and comprises a first clutch piece, a second clutch piece and a driving mechanism, the first clutch piece is movably arranged on the front handle, the second clutch piece is fixed on the rotating shaft, the driving mechanism is connected to the first clutch piece, and the driving mechanism is used for driving the first clutch piece to move in a reciprocating mode so as to enable the first clutch piece to be combined with or separated from the second clutch piece; a manual operating means provided at the rear handle for releasably locking the second clutch with the front handle; when the first clutch is combined with a second clutch or the manual operating device locks the second clutch with the front handle, the front handle is in a gear engaging state; the front handle hand is in a free state when the first clutch is disengaged from the second clutch and the manually operated device releases the second clutch from the front handle;

and the front handle is also used for driving the manual operation device to act when the front handle rotates in a second direction opposite to the first direction from the reference position, so that the manual operation device releases the second clutch piece and the front handle.

Among the above-mentioned technical scheme, back handle rotates then can drive the pivot and rotate along first direction, and the user can be indoor through making back handle rotate along first direction to unblank the lock, open the door with normally. The front handle has a gear engaging state and a free state, and the state of the front handle can be switched by the unlocking device and the manual operation device. The first clutch piece is driven to move back and forth by the driving mechanism of the unlocking device, so that the first clutch piece can be combined with or separated from the second clutch piece, after the first clutch piece is combined with the second clutch piece, the front handle is in a gear engaging state, and the front handle rotates along the first direction from the reference position to drive the rotating shaft to rotate so as to unlock the door lock. The second clutch piece and the front handle can be locked or released through the manual operation device, if the manual operation device locks the second clutch piece and the front handle, the second clutch piece is fixedly connected with the rotating shaft, namely, the rotating shaft and the front handle are locked together through the manual operation device, the front handle is in a gear engaging state, and the front handle can also drive the rotating shaft to rotate along the first direction from the reference position to unlock the door lock. If the second clutch piece and the front handle are released by the manual operation device and the first clutch piece is separated from the second clutch piece, at the moment, the front handle is in a free state, the rotating shaft cannot be driven to rotate through the front handle, and the door lock cannot be unlocked. When the second clutch member is locked to the front handle by the manual operation device, the manual operation device is operated by rotating the front handle in the second direction from the reference position to change the state of the manual operation device, and the manual operation device releases the second clutch member from the front handle. That is, the manual operating device can be switched from the state of locking the second clutch member and the front handle to the released state of releasing the second clutch member and the front handle by rotating the front handle in the opposite direction (second direction) to the unlocking thereof from the reference position outdoors, so that the user can lock the door outdoors.

In some embodiments, the manual operation device comprises: the locking piece is movably arranged on the second clutch piece, a locking groove is formed in the front handle, and the locking piece is used for being matched with the locking groove in an inserted mode; a trigger for changing position upon rotation relative to the second clutch to prevent or allow the locking member to exit the locking slot such that the locking member locks or releases the second clutch with the front handle; when the locking piece locks the second clutch piece and the front handle, the front handle is further used for driving the second clutch piece to rotate relative to the trigger piece and driving the locking piece to exit the locking groove when the front handle rotates along a second direction from the reference position, so that the second clutch piece and the front handle are released.

In the technical scheme, the trigger piece can be switched between the position for preventing the locking piece from exiting the locking groove and the position for allowing the locking piece to exit the locking groove by rotating the trigger piece, so that the locking or releasing of the second clutch piece and the front handle by the manual operation device is realized, the whole structure of the manual operation device is simple, and the operation is simple and convenient. The manual operation device is switched from the release state to the locking state by the rotation of the trigger piece relative to the second clutch piece, and the manual operation device is switched from the locking state to the release state by the rotation of the front handle from the reference position along the second direction.

In some embodiments, the trigger member has a recess in its peripheral wall, and rotation of the trigger member relative to the second clutch member causes the recess to align with or misalign with the locking member; when the locking piece is inserted into the locking groove and the concave part is staggered with the locking piece, the triggering piece can prevent the locking piece from exiting the locking groove, so that the locking piece can lock the second clutch piece with the front handle; when the recess is aligned with the locking member, the trigger is configured to allow the locking member to exit the locking slot such that the locking member releases the second clutch from the front handle; when the locking piece locks the second clutch piece with the front handle, the front handle is used for driving the second clutch piece and the locking piece to rotate together relative to the trigger piece when the front handle rotates along the second direction from the reference position, so that the locking piece is withdrawn from the locking groove when the concave part is aligned with the locking piece.

Among the above-mentioned technical scheme, be equipped with the concave part on the periphery wall of trigger, can make concave part and locking piece align or stagger through rotating the trigger. If the concave part is aligned with the locking piece, the trigger piece does not limit the locking piece to retreat any more, the locking piece can enter the concave part to withdraw from the locking groove, and the locking piece releases the second clutch piece and the front handle; if the locking member is offset from the recess, the trigger member prevents the locking member from exiting the locking groove, and the locking member locks the second clutch member with the front handle.

In some embodiments, the front handle has a sleeve portion, the locking groove is disposed in the sleeve portion, the sleeve portion is sleeved on the outside of the second clutch, and the second clutch is sleeved on the outside of the trigger; and a sliding hole for the locking piece to move along the radial direction of the rotating shaft is formed in the second clutch piece, and the sliding hole penetrates through the inner peripheral wall and the outer peripheral wall of the second clutch piece.

Among the above-mentioned technical scheme, the outside of second clutch spare is located to the cover coupling portion cover of front handle, and the outside of trigger piece is located to the second clutch spare cover for front handle, second clutch spare and trigger piece three's structure is more compact. The second clutch part is provided with a sliding hole for the locking part to move along the radial direction of the rotating shaft, so that the locking part can move directionally in the second clutch part, and the locking function on the second clutch part and the front handle is better.

In some embodiments, the first clutch has a first position engaged with the second clutch and a second position disengaged from the second clutch; the door lock further comprises a front mounting plate, the front handle is rotatably arranged on the front mounting plate, the first clutch piece is circumferentially locked with the front mounting plate when in the second position, and the first clutch piece can circumferentially rotate relative to the front mounting plate when in the first position; and when the locking piece locks the second clutch piece and the front handle and the first clutch piece is positioned at the second position, the first limiting structure is used for preventing the trigger piece from rotating along the second direction along with the second clutch piece when the front handle rotates along the second direction from the reference position.

In the technical scheme, the first clutch piece is circumferentially locked with the front mounting plate at the second position, namely the first clutch piece cannot rotate relative to the front mounting plate at the second position, and the first clutch piece is blocked by the front mounting plate; the first clutch piece can rotate relative to the front mounting plate in the circumferential direction at the first position, and the first clutch piece can rotate along the first direction under the driving action of the front handle when the driving mechanism is combined with the second clutch piece at the first position so as to drive the second clutch piece and the rotating shaft to rotate and unlock the door lock. Because the first limit structure is arranged between the first clutch piece and the trigger piece, under the condition that the second clutch piece is locked with the front handle by the locking piece and the first clutch piece is positioned at the second position, if the locking piece is used for unlocking the second clutch piece with the front handle, the front handle rotates along the second direction from the reference position, the first limit structure plays a role in preventing the trigger piece from rotating along the second direction along with the second clutch piece, namely, in the process that the front handle rotates along the second direction from the reference position, the first clutch piece is prevented by the front mounting plate, the trigger piece is prevented by the first clutch piece, the first clutch piece and the trigger piece can not rotate, the situation that the trigger piece rotates along with the second clutch piece under the action of friction force between the second clutch piece and the trigger piece in the process that the second clutch piece rotates along the second direction along with the front handle is avoided, and the front handle cannot rotate along the second direction from the reference position to enable the locking piece to unlock the second clutch piece from the front handle In the case of a lock.

In some embodiments, the first limit formation comprises a first stop and a second stop; the first stopping portion is arranged on the first clutch member, the triggering member is provided with a central hole, the second stopping portion is convexly arranged on the hole wall of the central hole, the first stopping portion is inserted into the central hole, and the second stopping portion is used for abutting against the first stopping portion so as to prevent the triggering member from rotating along the second direction along with the second clutch member when the front handle rotates along the second direction from the reference position.

Among the above-mentioned technical scheme, trigger the piece and be equipped with the centre bore, the protruding pore wall of locating the centre bore of second backstop portion, first backstop portion is inserted and is located in the centre bore, and second backstop portion supports and then can prevent to trigger the piece and follow the second separation and reunion piece when front handle rotates along the second direction from the reference position on leaning on first backstop portion and rotate along the second direction, and first limit structure's overall structure is simple, has the effect of fine one-way blocking.

In some embodiments, a second stop structure is disposed between the first clutch and the front handle; the second limit structure is used for driving the first clutch piece to rotate along the first direction when the first clutch piece is located at the first position and the front handle rotates along the first direction from the reference position, and the second limit structure is also used for allowing the front handle to rotate along the first direction and the second direction from the reference position relative to the first clutch piece when the first clutch piece is located at the second position.

In the technical scheme, a second limit structure is arranged between the first clutch piece and the front handle, the second limit structure allows the front handle to rotate along a first direction and a second direction from a reference position relative to the first clutch piece when the first clutch piece is positioned at a second position, although the first clutch piece can not rotate under the limiting action of the front mounting plate when the first clutch piece is positioned at the second position, the rotation of the front handle along the first direction and the second direction from the reference position can not be limited by the first clutch piece, thereby ensuring that the front handle can rotate along the first direction from the reference position when the manual operating device locks the second clutch piece and the front handle, the rotating shaft is driven to rotate to realize unlocking, and the front handle can rotate along the second direction from the reference position when the manual operation device locks the second clutch piece and the front handle, so that the manual operation device acts to release the second clutch piece and the front handle. In addition, the second limit structure can also drive the first clutch piece to rotate along the first direction when the first clutch piece is located the first position and the front handle rotates along the first direction from the reference position, that is to say, when the first clutch piece is located the first position, when the front handle rotates along the first direction from the reference position, the first clutch piece rotates along the first direction along the front handle under the effect of the second limit structure, and the first clutch piece is guaranteed to be located and can drive the rotating shaft to rotate along the first direction from the reference position through the front handle after being combined with the second clutch piece so as to unlock the door lock.

In some embodiments, the door lock further comprises a micro switch mounted to the front handle; the trigger piece is provided with a trigger part, and the trigger piece is used for enabling the trigger part to trigger the microswitch when the trigger piece rotates relative to the second clutch piece so as to enable the microswitch to generate a first signal and enable the door lock to be in a grading authority mode; the front handle is used for driving the microswitch to rotate when the front handle rotates from the reference position to the first direction, so that the trigger part triggers the microswitch, the microswitch generates a second signal, and the grading permission mode is cancelled.

In the technical scheme, the second clutch part and the front handle can be locked or unlocked by rotating the trigger part, and the trigger part of the trigger part can also trigger the microswitch by rotating the trigger part, so that the door lock is switched to a grading authority mode. If the classification permission mode needs to be cancelled, the front handle can rotate towards the first direction from the reference position to drive the micro switch to rotate, so that the trigger part triggers the micro switch again, and the classification permission mode is cancelled.

In some embodiments, a third limiting structure is arranged between the rotating shaft and the front handle; the third limiting structure is used for enabling the front handle to rotate along the first direction from the reference position along with the rotating shaft when the rear handle rotates along the first direction, so that the front handle drives the microswitch to rotate, and the trigger part triggers the microswitch to cancel the grading permission mode; the third limiting structure is further used for allowing the front handle to rotate relative to the rotating shaft when the front handle rotates along the first direction from the reference position.

Among the above-mentioned technical scheme, be provided with third limit structure between pivot and the preceding handle for the pivot can drive preceding handle through third limit structure when the back handle rotates along first direction and rotate along first direction from the benchmark position, and the preceding handle rotates along first direction then can't drive the pivot through third limit structure and rotate. Under the condition that the first clutch piece is separated from the second clutch piece and the manual operating device separates the second clutch piece from the rotating shaft, if the front handle rotates along the first direction from the reference position, the front handle rotates the relative rotating shaft, namely the front handle cannot drive the rotating shaft to rotate; under the condition that the first clutch piece is separated from the second clutch piece and the manual operation device separates the second clutch piece from the rotating shaft, if the rear handle rotates along the first direction, the third limiting structure can prevent the rotating shaft from rotating relative to the front handle, and the front handle rotates along the first direction along with the rotating shaft, so that the front handle drives the microswitch to rotate, the trigger part triggers the microswitch, and the grading permission mode is cancelled. That is, the hierarchical privilege mode can be cancelled by both the rear handle and the front handle rotating in the first direction.

In some embodiments, a stop piece is arranged on the front handle, and a hole for the rotating shaft to penetrate is formed in the stop piece; the third limiting structure comprises a third stopping part and a fourth stopping part, the third stopping part is convexly arranged on the hole wall of the hole channel, the fourth stopping part is arranged on the rotating shaft and used for abutting against the third stopping part, and therefore the front handle can rotate along the first direction from the reference position along with the rotating shaft when the rear handle rotates along the first direction.

Among the above-mentioned technical scheme, the backstop piece is equipped with the pore, and the pore wall in the pore of backstop piece is located to the third backstop portion arch, and in the pore was worn to locate by the pivot, when the back handle was followed when first direction rotated, the epaxial fourth backstop portion of commentaries on classics leaned on the third backstop portion on the backstop piece to the handle rotates along first direction from the benchmark position before the drive. The third limiting structure is simple in overall structure and has a good one-way blocking effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a door lock provided in an embodiment of the present application;

FIG. 2 is a partial view of the front handle portion of the door lock shown in FIG. 1;

FIG. 3 is a partial view of the rear handle portion of the door lock shown in FIG. 1;

FIG. 4 is a cross-sectional view A-A of the door lock shown in FIG. 1;

FIG. 5 is a partial view of the door lock shown in FIG. 4;

FIG. 6 is an enlarged fragmentary view of the door latch of FIG. 1 at B;

FIG. 7 is an isometric view of the door lock shown in FIG. 1 (with the front and rear mounting plates removed);

FIG. 8 is an enlarged view of a portion of the door latch of FIG. 7 at C;

FIG. 9 is a partial isometric view of the door lock shown in FIG. 1;

fig. 10 is a diagram showing the positional relationship between the trigger and the microswitch shown in fig. 9.

Icon: 10-rear handle; 11-a rotating shaft; 20-front handle; 21-locking groove; 22-a socket joint; 30-an unlocking device; 31-a first clutch; 311-first snap; 32-a second clutch; 321-a slide hole; 33-a drive mechanism; 331-an electric drive mechanism; 3311-slide block; 3312-drive shaft; 3313-electric machine; 3314-spring; 332-manual drive mechanism; 3321-mechanical lock cylinder; 3322-connecting member; 3323-an executive; 40-a manual operating device; 41-knob; 42-a locking element; 43-a trigger; 431-a recess; 432-a central hole; 433-a trigger part; 44-a transmission rod; 50-a front mounting plate; 51-a first limit groove; 60-rear mounting plate; 70-a controller; 80-a first limit structure; 81-a first stop; 82-a second stop; 90-a second limit structure; 91-a second limiting groove; 911-first groove section; 912-a second groove portion; 92-second snap; 100-a microswitch; 110-a third limit structure; 1101-a third stop; 1102-a fourth stop; 120-a stop member; 200-door lock; d-a first direction; e-a second direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Examples

Referring to fig. 1, fig. 1 is a schematic structural diagram of a door lock 200 according to an embodiment of the present application, where the door lock 200 includes a rear handle 10, a front handle 20, an unlocking device 30, and a manual operating device 40. The rear handle 10 is connected with a rotating shaft 11, and the rear handle 10 is used for driving the rotating shaft 11 to rotate along a first direction D so as to unlock the door lock 200. The front handle 20 has a gear engaging state and a free state, the front handle 20 is used for driving the rotating shaft 11 to rotate when the front handle 20 is in the gear engaging state and rotates in the first direction D from the reference position to unlock the door lock 200, and the front handle 20 is capable of rotating in the first direction D (not shown in fig. 1) relative to the rotating shaft 11 when the front handle 20 is in the free state. The unlocking device 30 is arranged on the front handle 20 and comprises a first clutch piece 31, a second clutch piece 32 and a driving mechanism 33, wherein the first clutch piece 31 is movably arranged on the front handle 20, the second clutch piece 32 is fixed on the rotating shaft 11, the driving mechanism 33 is connected to the first clutch piece 31, and the driving mechanism 33 is used for driving the first clutch piece 31 to reciprocate so as to enable the first clutch piece 31 to be combined with or separated from the second clutch piece 32. And a manual operating device 40 provided to the rear handle 10, the manual operating device 40 being for releasably locking the second clutch member 32 with the front handle 20. When the first clutch member 31 is engaged with the second clutch member 32, or the manual operating device 40 locks the second clutch member 32 with the front handle 20, the front handle 20 is in the engaged state; when the first clutch 31 is disengaged from the second clutch 32 and the manual operating device 40 releases the second clutch 32 from the front handle 20, the front handle 20 is in a free state. Wherein the front handle 20 is further adapted to actuate the manually operable means 40 when rotated in a second direction E (not shown in fig. 1) opposite the first direction D from the reference position, such that the manually operable means 40 releases the second clutch member 32 from the front handle 20.

The rotation of the rear handle 10 along the first direction D can drive the rotation shaft 11 to rotate along the first direction D, and the user can unlock the door lock 200 by rotating the rear handle 10 along the first direction D indoors, so as to open the door normally. The front handle 20 has a gear engaging state and a free state, and the state of the front handle 20 can be switched by the unlocking device 30 and the manual operating device 40. The first clutch 31 is driven by the driving mechanism 33 of the unlocking device 30 to move back and forth, so that the first clutch 31 can be combined with or separated from the second clutch 32, after the first clutch 31 is combined with the second clutch 32, the front handle 20 is in a gear engaging state, and the rotation of the front handle 20 along the first direction D from the reference position can drive the rotating shaft 11 to rotate, so as to unlock the door lock 200. The second clutch 32 and the front handle 20 can be locked or released by the manual operation device 40, if the manual operation device 40 locks the second clutch 32 and the front handle 20, since the second clutch 32 is fixedly connected with the rotating shaft 11, that is, the manual operation device 40 locks the rotating shaft 11 and the front handle 20 together, the front handle 20 is in a gear engaging state, and the front handle 20 can also drive the rotating shaft 11 to rotate from the reference position along the first direction D, so as to unlock the door lock 200. If the second clutch member 32 is released from the front handle 20 by the manual operating device 40 and the first clutch member 31 is separated from the second clutch member 32, the front handle 20 is in a free state, and the rotating shaft 11 cannot be driven to rotate by the front handle 20, so that the door lock 200 cannot be unlocked. When the second clutch 32 is locked to the front handle 20 by the manual operating device 40, the manual operating device 40 is operated by rotating the front handle 20 in the second direction E from the reference position to change the state of the manual operating device 40, and the manual operating device 40 releases the second clutch 32 from the front handle 20. That is, the manual operating device 40 can be switched from the state of locking the second clutch member 32 and the front handle 20 to the released state of releasing the second clutch member 32 and the front handle 20 by rotating the front handle 20 from the reference position in the opposite direction (second direction E) of unlocking thereof outdoors, so that the user can lock the door outdoors.

The first clutch member 31 and the second clutch member 32 are disposed opposite to each other in the axial direction of the rotating shaft 11. The first clutch 31 has a first position and a second position relative to the front handle 20, the first clutch 31 being engaged with the second clutch 32 when in the first position and the first clutch 31 being disengaged from the second clutch 32 when in the second position.

In actual use, the rear handle 10 is located at the inner side of the door, and the front handle 20 is located at the outer side of the door, that is, in case of closing the door, the rear handle 10 is located indoors, and the front handle 20 is located outdoors. Under the condition that the door is locked, the first clutch piece 31 is separated from the second clutch piece 32 at the second position, the manual operation device 40 releases the second clutch piece 32 from the front handle 20, at the moment, if a user needs to open the door to enter the room, the user can drive the first clutch piece 31 to move to the first position through the driving mechanism 33 and combine with the second clutch piece 32, so that the front handle 20 is in a gear engaging state, and the user can drive the front handle 20 to rotate along the first direction D from the reference position to drive the rotating shaft 11 to rotate, so that the door lock 200 is unlocked, and the door opening is realized. After the lock is unlocked, the driving mechanism 33 drives the first clutch piece 31 to reset, so that the first clutch piece 31 is separated from the second clutch piece 32, the front handle 20 is restored to the free state, and the rotating shaft 11 cannot be driven to rotate along the first direction D by the front handle 20. After the user enters the door, the user can lock the second clutch member 32 and the front handle 20 through the manual operation device 40, and switch the front handle 20 to the gear engaging state, and after the user leaves the door, even if the door is closed again, the user can unlock at any time through the front handle 20. Of course, if the user needs to lock the door after going out, the user can rotate the front handle 20 in the second direction E from the reference position after closing the door, and the manual operating device 40 releases the second clutch 32 from the front handle 20, so as to switch the front handle 20 from the engaged state to the disengaged state, thereby locking the door. That is, after the front handle 20 is switched to the engaged state by the manual operating device 40 indoors, the front handle 20 may be switched to the engaged state outdoors by rotating the front handle 20 in the second direction E from the reference position without switching the front handle 20 to the released state by the handle operating mechanism indoors, so as to provide convenience to the user and improve the experience.

The first clutch member 31 and the second clutch member 32 can be engaged together by means of a snap fit, so that the first clutch member 31 can drive the second clutch member 32 to rotate in the first direction D after being engaged with the second clutch member 32.

In actual use, the front handle 20 and the rear handle 10 are both mounted on the door, the front handle 20 is used for being mounted on the outer side of the door, and the rear handle 10 is used for being mounted on the inner side of the door.

In some embodiments, the door lock 200 may further include a front mounting plate 50 and a rear mounting plate 60, the front handle 20 being mounted to the outside of the door by the front mounting plate 50, and the rear handle 10 being mounted to the inside of the door by the rear mounting plate 60. Wherein, preceding handle 20 rotationally sets up in preceding mounting panel 50, and back handle 10 rotationally sets up in back mounting panel 60, and preceding mounting panel 50 and back mounting panel 60 are installed the back on the door, and preceding handle 20 can rotate along first direction D and second direction E relative preceding mounting panel 50, and back handle 10 can rotate along first direction D and second direction E relative back mounting panel 60.

The reference position of the front handle 20 is a position where the front handle 20 is normally installed on the door, and for example, when the front handle 20 is located at the reference position, the front handle 20 is in a horizontal state. The front handle 20 is rotated in the first direction D from the reference position, which means that the front handle 20 is rotated downward from the reference position; the front handle 20 is rotated in the second direction E from the reference position, which can be understood as the front handle 20 being rotated upward from the reference position.

In the embodiment of the present application, the door lock 200 further includes a lock body (not shown) drivingly connected to the rotating shaft 11, and the lock body is configured to be installed in the door. When the front handle 20 is in the gear engaging state and the rotating shaft 11 is driven by the front handle 20 or the rear handle 10 to rotate along the first direction D, the rotating shaft 11 will drive the bolt in the lock body to exit from the lock slot in the door frame, so as to unlock the door lock 200. Under the free state at front handle 20, front handle 20 can't drive pivot 11 and rotate along first direction D, and the spring bolt of lock body is inserted all the time and is located the locked groove in the door frame, can't realize unblanking, but if back handle 10 rotates along first direction D then can drive pivot 11 and rotate, unblanks lock 200.

In the embodiment of the present invention, the driving mechanism 33 in the unlocking device 30 may be the electric driving mechanism 331 or the manual driving mechanism 332.

In some embodiments, referring to fig. 2, fig. 2 is a partial view of the front handle 20 of the door lock 200 shown in fig. 1, the driving mechanism 33 includes an electric driving mechanism 331, the electric driving mechanism 331 may include a sliding block 3311, a driving shaft 3312, a motor 3313 and a spring 3314, the sliding block 3311 is slidably disposed in the front handle 20 along an axial direction of a rotation shaft 11, the driving shaft 3312 is connected to an output end of the motor 3313, the sliding block 3311 is disposed outside the driving shaft 3312, a locking block is connected to the first clutch member 31, the spring 3314 is disposed outside the driving shaft 3312, the spring 3314 acts on the sliding block 3311, a protrusion (not shown) is disposed on the sliding block 3311, and the protrusion is engaged in a helical gap of the spring 3314.

When the first clutch member 31 needs to move to the first position and be combined with the second clutch member 32, the motor 3313 drives the driving shaft 3312 to rotate forward, the convex portion on the driving shaft 3312 is engaged with the spiral gap of the spring 3314, and one end of the spring 3314 pushes the slider 3311 to move, so that the slider 3311 drives the first clutch member 31 to move to the first position along the axial direction of the rotating shaft 11 toward the direction close to the second clutch member 32; when the first clutch 31 needs to be moved to the second position to be separated from the second clutch 32, the motor 3313 drives the driving shaft 3312 to rotate reversely, so that the other end of the spring 3314 pushes the slider 3311 to return to the original position.

In some embodiments, the driving mechanism 33 may further include a manual driving mechanism 332, and the manual driving mechanism 332 may include a mechanical lock cylinder 3321, a connecting member 3322, and an actuating member 3323, wherein the actuating member 3323 and the mechanical lock cylinder 3321 pass through the connecting member 3322, and the mechanical lock cylinder 3321 is configured to rotate the actuating member 3323 through the connecting member 3322, so that the actuating member 3323 pushes the first clutch member 31 to move, so that the first clutch member 31 is coupled to the second clutch member 32 in the first position.

One or both of the actuator 3323 and the first clutch 31 may be provided with a guide ramp (not shown) so that the actuator 3323 drives the first clutch 31 to move when rotated.

Illustratively, the connecting member 3322 is a housing structure, the mechanical lock cylinder 3321 is located at an end of the motor 3313 away from the driving shaft 3312, and the connecting member 3322 covers the motor 3313 to save space.

In some embodiments, the door lock 200 may further include a controller 70 (not shown), wherein the motor 3313 of the electric driving mechanism 331 is electrically connected to the controller 70, and the controller 70 is configured to control the motor 3313 to rotate forward and control the motor 3313 to rotate backward in a delayed manner according to the unlocking signal. The controller 70 may be a PLC controller 70 or a single chip microcomputer, etc.

When the front handle 20 is in the free state, if the door needs to be opened, the user can send an unlocking signal to the controller 70 through the mobile terminal, and the controller 70 controls the motor 3313 to rotate forward according to the unlocking signal, so that the first clutch piece 31 moves to the first position to be combined with the second clutch piece 32, the front handle 20 is switched to the gear engaging state, and the front handle 20 can be unlocked by rotating from the reference position to the first direction D, so that the door can be opened. After the controller 70 controls the motor 3313 to rotate forward, the controller 70 delays (3 seconds to 10 seconds) the rotation of the motor 3313 to move the first clutch 31 to the second position to disengage the second clutch 32, and the front handle 20 returns to the free state.

Certainly, the user can also unlock the lock by the manual driving mechanism 332 according to the requirement, after the user inserts the key into the keyhole of the mechanical lock cylinder 3321, the user drives the connecting member 3322 and the actuating member 3323 to rotate by the key, so that the first clutch member 31 moves to the first position to be combined with the second clutch member 32, the front handle 20 is in the gear engaging state, and the front handle 20 rotates from the reference position to the first direction D to unlock the lock.

In some embodiments, referring to fig. 3 and 4, fig. 3 is a partial view of a rear handle 10 portion of the door lock 200 shown in fig. 1, fig. 4 is a sectional view a-a of the door lock 200 shown in fig. 1, and the manual operating device 40 includes a locking member 42 and a trigger member 43. The locking piece 42 is movably arranged on the second clutch piece 32, the front handle 20 is provided with a locking groove 21, and the locking piece 42 is used for being in plug fit with the locking groove 21. The trigger 43 is adapted to change position upon rotation relative to the second clutch 32 to prevent the locking member 42 from exiting the locking groove 21 or to allow the locking member 42 to exit the locking groove 21, so that the locking member 42 locks or releases the second clutch 32 to the front handle 20. When the locking member 42 locks the second clutch 32 to the front handle 20, the front handle 20 is also used to rotate the second clutch 32 relative to the trigger 43 and drive the locking member 42 out of the locking groove 21 when it is rotated in the second direction E from the reference position to release the second clutch 32 from the front handle 20.

By rotating the trigger 43, the trigger 43 can be switched between a position for preventing the locking piece 42 from exiting the locking groove 21 and a position for allowing the locking piece 42 to exit the locking groove 21, so that the second clutch piece 32 and the front handle 20 can be locked or released by the manual operation device 40, and the manual operation device 40 is simple in overall structure and simple and convenient to operate. The manual operation device 40 is switched from the release state to the locking state by rotating the trigger 43 relative to the second clutch 32, and the manual operation device 40 is switched from the locking state to the release state by rotating the front handle 20 from the reference position along the second direction E, which is realized by the front handle 20 driving the second clutch 32 to rotate relative to the trigger 43.

In some embodiments, the manual operating device 40 may further include a knob 41, the knob 41 is connected to the trigger 43, and the knob 41 is used for rotating the trigger 43 to change the position of the trigger 43. The knob 41 partially protrudes from the rear handle 10 to facilitate gripping by an operator.

The knob 41 and the trigger 43 may be connected or indirectly connected. Illustratively, the knob 41 is connected with the trigger 43 through a transmission rod 44, the two ends of the transmission rod 44 are respectively provided with the trigger 43 and the knob 41 for fixing, and the transmission rod 44 is arranged inside the rotating shaft 11.

In some embodiments, the trigger 43 has a recess 431 in its peripheral wall, and rotation of the trigger 43 relative to the second clutch 32 aligns or misaligns the recess 431 with the locking member 42; when the locking piece 42 is inserted into the locking groove 21 and the recess 431 is misaligned with the locking piece 42, the trigger piece 43 can prevent the locking piece 42 from exiting the locking groove 21, so that the locking piece 42 locks the second clutch piece 32 with the front handle 20; when the recess 431 is aligned with the locking member 42, the trigger 43 can allow the locking member 42 to exit the locking groove 21, so that the locking member 42 releases the second clutch 32 from the front handle 20; when the locking member 42 locks the second clutch member 32 to the front handle 20, the front handle 20 is adapted to rotate in the second direction E from the reference position to rotate the second clutch member 32 and the locking member 42 together relative to the trigger member 43 to allow the locking member 42 to exit the locking groove 21 when the recess is aligned with the locking member 42.

If the recess 431 is aligned with the locking member 42, the trigger 43 no longer restricts the locking member 42 from backing out, the locking member 42 can enter into the recess 431 to withdraw from the locking groove 21, and the locking member 42 releases the second clutch member 32 from the front handle 20; if the locking member 42 is misaligned with the recess 431, the trigger member 43 prevents the locking member 42 from being withdrawn from the locking groove 21, and the locking member 42 locks the second clutch member 32 with the front handle 20.

Optionally, the front handle 20 has a sleeve portion 22, the locking groove 21 is disposed in the sleeve portion 22, the sleeve portion 22 is sleeved outside the second clutch 32, and the second clutch 32 is sleeved outside the trigger 43; the second clutch member 32 is provided with a slide hole 321 for the locking member 42 to move in the radial direction of the rotating shaft 11, and the slide hole 321 penetrates through the inner circumferential wall and the outer circumferential wall of the second clutch member 32.

The sleeve portion 22 of the front handle 20 is sleeved outside the second clutch 32, and the second clutch 32 is sleeved outside the trigger 43, so that the front handle 20, the second clutch 32 and the trigger 43 are more compact in structure. The second clutch member 32 is provided with a sliding hole 321 for the locking member 42 to move along the radial direction of the rotating shaft 11, so that the locking member 42 can move directionally in the second clutch member 32, and a better locking effect is provided for the second clutch member 32 and the front handle 20.

Illustratively, the locking member 42 is of a cylindrical or spherical configuration such that the locking member 42 can be withdrawn from and inserted into the recess 431 of the trigger 43 into the locking groove 21 during rotation of the trigger 43 and ensures that the locking member 42 can be withdrawn from and inserted into the recess 431 of the trigger 43 during rotation of the front handle 20 in the second direction E from the reference position after alignment of the locking member 42 with the recess 431 of the trigger 43, such that the locking member 42 unlocks the front handle 20 from the second clutch 32.

Of course, the locking member 42 may be one, or may be a plurality of locking members circumferentially arranged with the trigger member 43 as a center. When there are a plurality of locking pieces 42, there are a plurality of locking grooves 21 on the front handle 20 and a plurality of recesses 431 on the trigger 43, and three of the locking grooves 21, recesses 431, and locking pieces 42 are in one-to-one correspondence. Illustratively, there are two triggers 43, with the two triggers 43 being 180 degrees apart.

It should be noted that, in other embodiments, the manual operating device 40 may also have other structures, for example, the manual operating device 40 includes a moving member and a locking member 42, the moving member is movably disposed on the rear handle 10 along the axial direction of the rotating shaft 11, a part of the moving member is disposed outside the rear handle 10 so as to move the moving member by pressing, the locking member 42 is movably disposed on the second clutch member 32 along the radial direction of the rotating shaft 11, the moving member is provided with a concave portion 431, the front handle 20 is provided with a locking groove 21 for inserting the locking member 42, and the locking member 42 is prevented or allowed to exit from the locking groove 21 by the axial movement of the moving member. The moving member has a depressed position and a retracted position, when the moving member is located at the depressed position, the recess 431 on the moving member is staggered with the locking member 42, the moving member prevents the locking member 42 from exiting the locking groove 21, and the locking member 42 locks the second clutch member 32 with the front handle 20; when the moving member is located at the retreat position, the recess 431 of the moving member is aligned with the locking member 42, the moving member allows the locking member 42 to exit from the locking groove 21, the locking member 42 releases the second clutch member 32 from the front handle 20, and the moving member enters the recess 431 during exiting from the locking groove 21. The front handle 20 is used for driving the moving member to return from the depressed position to the retracted position when the front handle is rotated in the second direction E from the reference position, so as to release the second clutch member 32 from the front handle 20. Of course, a guide slope may be provided at one end of the front handle 20, and the front handle 20 drives the moving member to move in the axial direction of the rotating shaft 11 by the guide slope when rotating in the second direction E from the reference position, so as to return the moving member from the depressed position to the retracted position.

In some embodiments, the first clutch 31 is circumferentially locked with the front mounting plate 50 in the second position, and the first clutch 31 is circumferentially rotatable relative to the front mounting plate 50 in the first position. Referring to fig. 5, fig. 5 is a partial view of the door lock 200 shown in fig. 4, a first limit structure 80 is disposed between the first clutch 31 and the trigger 43, and when the locking member 42 locks the second clutch 32 to the front handle 20 and the first clutch 31 is located at the second position, the first limit structure 80 is used for preventing the trigger 43 from following the second clutch 32 to rotate in the second direction E when the front handle 20 rotates in the second direction E from the reference position.

The first clutch member 31 is circumferentially locked with the front mounting plate 50 when in the second position, namely the first clutch member 31 cannot rotate relative to the front mounting plate 50 when in the second position, and the first clutch member 31 is blocked and limited by the front mounting plate 50; the first clutch 31 can rotate circumferentially relative to the front mounting plate 50 at the first position, so that the first clutch 31 can rotate in the first direction D under the driving action of the front handle 20 when the driving mechanism 33 is combined with the second clutch 32 at the first position, so as to drive the second clutch 32 and the rotating shaft 11 to rotate, and thus the door lock 200 is unlocked. Since the first limit structure 80 is provided between the first clutch member 31 and the trigger member 43, in the case where the locking member 42 locks the second clutch member 32 with the front handle 20 and the first clutch member 31 is located at the second position, if the locking member 42 unlocks the second clutch member 32 with the front handle 20 by the front handle 20, and the front handle 20 rotates in the second direction E from the reference position, the first limit structure 80 functions to prevent the trigger member 43 from following the rotation of the second clutch member 32 in the second direction E, that is, in the process of the rotation of the front handle 20 in the second direction E from the reference position, the first clutch member 31 is restrained by the front mounting plate 50, the trigger member 43 is stopped by the first clutch member 31, neither the first clutch member 31 nor the trigger member 43 rotates, and to prevent the second clutch member 32 from following the rotation of the front handle 20 in the second direction E, the trigger member 43 rotates by the friction force between the second clutch member 32 and the trigger member 43, causing the front handle 20 to rotate in the second direction E from the reference position without the locking member 42 unlocking the second clutch member 32 from the front handle 20.

Optionally, the first limiting structure 80 comprises a first stopping portion 81 and a second stopping portion 82; the first stopping portion 81 is disposed on the first clutch member 31, the triggering member 43 is disposed with a central hole 432, the second stopping portion 82 is disposed protruding on a hole wall of the central hole 432, the first stopping portion 81 is inserted into the central hole 432, and the second stopping portion 82 is configured to abut against the first stopping portion 81 to prevent the triggering member 43 from rotating along the second direction E along with the second clutch member 32 when the front handle 20 rotates along the second direction E from the reference position. That is, the second stopping portion 82 abuts against the first stopping portion 81 to prevent the triggering member 43 from rotating along the second direction E along with the second clutch member 32 when the front handle 20 rotates along the second direction E from the reference position, and the first limiting structure 80 has a simple overall structure and a good one-way blocking effect.

When the first clutch 31 is located at the first position and is combined with the second clutch 32, the front mounting plate 50 cannot limit the first clutch 31, when the front handle 20 rotates in the first direction D from the reference position, the first stopping portion 81 on the first clutch 31 abuts against the second stopping portion 82 of the trigger 43, and the first clutch 31 drives the trigger 43 and the rotating shaft 11 to rotate, so as to achieve unlocking. In this process, since the first clutch member 31 rotates the trigger member 43, the first clutch member 31 and the trigger member 43 do not rotate relative to each other, and the front handle 20 does not change the state of the manual operating device 40 when rotating in the second direction E from the locked position.

With the locking piece 42 locking the second clutch member 32 with the front handle 20, when the first clutch member 31 is located at the second position, the first clutch member 31 is separated from the second clutch member 32, the first clutch member 31 is circumferentially locked with the front mounting plate 50, and when the front handle 20 is rotated in the second direction E from the reference position, the second stopper portion 82 of the trigger member 43 abuts against the first stopper portion 81 of the first clutch member 31, the first stopper portion 81 prevents the trigger member 43 from rotating, the trigger member 43 remains stationary, but the second clutch member 32 follows the rotation of the front handle 20, so that the locking piece 42 rotates from a position staggered from the recess 431 to a position aligned with the recess 431 to release the second clutch member 32 from the front handle 20.

Referring to fig. 6, fig. 6 is a partial enlarged view of a portion B of the door lock 200 shown in fig. 1, a first limiting groove 51 is formed on the front mounting plate 50, a first engaging protrusion 311 is formed on the first clutch member 31, and a width of the first limiting groove 51 is matched with a width of the first engaging protrusion 311 in a circumferential direction of the first clutch member 31. When the first clutch member 31 is located at the second position, the first clamping protrusion 311 is clamped in the first limiting groove 51, so that circumferential locking of the first clutch member 31 and the front mounting plate 50 is realized; when the first clutch member 31 is located at the first position, the first engaging protrusion 311 is disengaged from the first position-limiting groove 51, so that the first clutch member 31 can rotate freely.

In some embodiments, referring to fig. 7, fig. 7 is an isometric view of the door lock 200 shown in fig. 1 (with the front and rear mounting

plates

50 and 60 removed), with a second limit structure 90 disposed between the first clutch 31 and the front handle 20, the second limit structure 90 being configured to rotate the first clutch 31 in a first direction D when the first clutch 31 is in the first position and the front handle 20 is rotated in the first direction D from the reference position, and the second limit structure 90 being further configured to allow the front handle 20 to rotate in the first direction D and a second direction E from the reference position relative to the first clutch 31 when the first clutch 31 is in the second position.

A second limit structure 90 is arranged between the first clutch member 31 and the front handle 20, the second limit structure 90 allows the front handle 20 to rotate from the reference position in the first direction D and the second direction E relative to the first clutch member 31 when the first clutch member 31 is located at the second position, although the first clutch member 31 cannot rotate under the limiting action of the front mounting plate 50 when the first clutch member 31 is located at the second position, the rotation of the front handle 20 from the reference position in the first direction D and the second direction E is not limited by the first clutch member 31, which ensures that the front handle 20 can rotate from the reference position in the first direction D when the manual operating device 40 locks the second clutch member 32 with the front handle 20 to drive the rotating shaft 11 to rotate for unlocking, and ensures that the front handle 20 can rotate from the reference position in the second direction E when the manual operating device 40 locks the second clutch member 32 with the front handle 20 to actuate the manual operating device 40, releasing the second clutch 32 from the front handle 20. In addition, the second limiting structure 90 can also drive the first clutch 31 to rotate along the first direction D when the first clutch 31 is located at the first position and the front handle 20 rotates along the first direction D from the reference position, that is, when the first clutch 31 is located at the first position and the front handle 20 rotates along the first direction D from the reference position, the first clutch 31 rotates along the first direction D along with the front handle 20 under the action of the second limiting structure 90, so as to ensure that the first clutch 31 can drive the rotating shaft 11 to rotate along the first direction D from the reference position through the rotation of the front handle 20 along the first direction D after the first clutch 31 is located at the first position and combined with the second clutch 32, so as to unlock the door lock 200.

Optionally, referring to fig. 8, fig. 8 is a partial enlarged view of a portion C of the door lock 200 shown in fig. 7, the second limiting structure 90 may include a second limiting groove 91 disposed on the front handle 20 and a second engaging protrusion 92 disposed on the first clutch member 31, and the second engaging protrusion 92 is engaged in the second limiting groove 91. The second limiting groove 91 comprises a first groove part 911 extending axially and a second groove part 912 extending circumferentially, one end of the first groove part 911 is connected to the middle position of the second groove part 912, and the first groove part 911 and the second groove part 912 are in a T-shaped structure. In the circumferential direction of the first clutch member 31, the width of the first groove portion 911 matches the width of the second detent projection 92, and the width of the second groove portion 912 is greater than the width of the second detent portion.

When the first clutch member 31 is in the second position, the first clutch member 31 is separated from the second clutch member 32, the second detent 92 is located in the second groove portion 912, and when the front handle 20 is rotated in the first direction D and the second direction E from the reference position, the second groove portion 912 does not restrict the movement of the second detent 92, and the second detent 92 moves in the second groove portion 912. When the first clutch 31 is located at the first position, the first clutch 31 is engaged with the second clutch 32, the second stop portion 82 is located in the first groove portion 911, the first clutch 31 is circumferentially locked with the front handle 20, and the rotation of the front handle 20 will drive the first clutch 31 to rotate.

In some embodiments, referring to fig. 9 and 10, fig. 9 is a partial isometric view of the door lock 200 shown in fig. 1, fig. 10 is a positional relationship between the trigger 43 and the microswitch 100 shown in fig. 9, and the door lock 200 further includes the microswitch 100, and the microswitch 100 is mounted to the front handle 20. The trigger 43 has a trigger portion 433, and the trigger 43 is configured to cause the trigger portion 433 to trigger the micro switch 100 when rotating relative to the second clutch 32, so that the micro switch 100 generates a first signal to place the door lock 200 in the step-permission mode. The front handle 20 is used to drive the micro switch 100 to rotate when it rotates from the reference position to the first direction D, so that the trigger 433 triggers the micro switch 100, so that the micro switch 100 generates the second signal to cancel the classification permission mode.

The second clutch member 32 can be locked or unlocked to or from the front handle 20 by rotating the trigger member 43, and the microswitch 100 can be triggered by the trigger portion 433 of the trigger member 43 by rotating the trigger member 43, thereby switching the door lock 200 to the classification authority mode. If the classification permission mode needs to be cancelled, the front handle 20 can rotate from the reference position to the first direction D to drive the micro switch 100 to rotate, so that the trigger portion 433 triggers the micro switch 100 again, and the classification permission mode is cancelled.

Wherein the micro switch 100 may be electrically connected with the controller 70 of the door lock 200. The door lock 200 is in the hierarchical authority mode, and the authority for unlocking by the electric driving mechanism 331 may be limited, for example, only a designated user can unlock by the electric driving mechanism 331.

Illustratively, in the process of locking the second clutch 32 with the front handle 20 by the locking member 42 through the knob 41 driving the trigger 43 to rotate, the rotation direction of the knob 41 is the third direction; in the process that the knob 41 drives the trigger 43 to rotate so that the trigger 433 triggers the microswitch 100, the rotation direction of the knob 41 is a fourth direction, and the third direction is opposite to the fourth direction. For example, the knob 41 can rotate relative to the rear handle 10 to have three positions, namely a first side position, a middle position and a second side position, when the locking member 42 is required to lock the second clutch member 32 with the front handle 20, the knob 41 can be rotated forward from the middle position to the first side position, and when the trigger 433 is required to trigger the microswitch 100 to enable the door lock 200 to be in the step permission mode, the knob 41 can be rotated backward from the middle position to the second side position.

In some embodiments, a third limiting structure 110 is disposed between the rotating shaft 11 and the front handle 20. The third limiting structure 110 is configured to enable the front handle 20 to rotate along the first direction D from the reference position along with the rotating shaft 11 when the rear handle 10 rotates along the first direction D, so that the front handle 20 drives the micro switch 100 to rotate, and the triggering portion 433 triggers the micro switch 100 to cancel the classification permission mode; the third stopper structure 110 also serves to allow the front handle 20 to rotate with respect to the rotary shaft 11 when rotating in the first direction D from the reference position.

A third limiting structure 110 is arranged between the rotating shaft 11 and the front handle 20, so that the rotating shaft 11 can drive the front handle 20 to rotate along the first direction D from the reference position through the third limiting structure 110 when the rear handle 10 rotates along the first direction D, and the front handle 20 cannot drive the rotating shaft 11 to rotate through the third limiting structure 110 when rotating along the first direction D. Under the condition that the first clutch 31 is separated from the second clutch 32 and the manual operating device 40 separates the second clutch 32 from the rotating shaft 11, if the front handle 20 rotates from the reference position in the first direction D, the front handle 20 rotates relative to the rotating shaft 11, that is, the front handle 20 does not drive the rotating shaft 11 to rotate; under the condition that the first clutch 31 is separated from the second clutch 32 and the manual operating device 40 separates the second clutch 32 from the rotating shaft 11, if the rear handle 10 rotates along the first direction D, the third limiting structure 110 can prevent the rotating shaft 11 from rotating relative to the front handle 20, and the front handle 20 will rotate along the first direction D along with the rotating shaft 11, so that the front handle 20 drives the micro switch 100 to rotate, the trigger portion 433 triggers the micro switch 100, and the classification permission mode is cancelled. That is, the hierarchical authority mode can be cancelled by both the rear handle 10 and the front handle 20 rotating in the first direction D.

Optionally, a stopper 120 is disposed on the front handle 20, and a hole for the shaft 11 to penetrate is disposed on the stopper 120. The third limiting structure 110 includes a third stopping portion 1101 protruding on the hole wall of the hole and a fourth stopping portion 1102 arranged on the rotating shaft 11, and the fourth stopping portion 1102 is configured to abut against the third stopping portion 1101, so that the front handle 20 rotates along the first direction D from the reference position along with the rotating shaft 11 when the rear handle 10 rotates along the first direction D. That is, when the rear handle 10 rotates in the first direction D, the fourth stopping portion 1102 on the rotating shaft 11 abuts against the third stopping portion 1101 on the stopping member 120, so as to drive the front handle 20 to rotate in the first direction D from the reference position. The third limiting structure 110 has a simple overall structure and a good one-way blocking effect.

In other embodiments, the fourth stop 1102 in the third limit structure 110 can be disposed on the second clutch 32.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The above embodiments are merely for illustrating the technical solutions of the present application and are not intended to limit the present application, and those skilled in the art can make various modifications and variations of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A door lock (200) characterized by comprising;

the rear handle (10) is connected with a rotating shaft (11), and the rear handle (10) is used for driving the rotating shaft (11) to rotate along a first direction (D) so as to unlock the door lock (200);

a front handle (20) having a gear engaging state and a free state, said front handle (20) being adapted to rotate said spindle (11) when in said gear engaging state and rotated from a reference position in said first direction (D) to unlock said door lock (200), said front handle (20) being adapted to rotate in said first direction (D) relative to said spindle (11) when in said free state;

the unlocking device (30) is arranged on the front handle (20) and comprises a first clutch piece (31), a second clutch piece (32) and a driving mechanism (33), the front handle (20) is movably arranged on the first clutch piece (31), the second clutch piece (32) is fixed on the rotating shaft (11), the driving mechanism (33) is connected to the first clutch piece (31), and the driving mechanism (33) is used for driving the first clutch piece (31) to move in a reciprocating mode so that the first clutch piece (31) is combined with or separated from the second clutch piece (32);

a manually operable device (40) provided to the rear handle (10), the manually operable device (40) for releasably locking the second clutch (32) with the front handle (20); the front handle (20) being in gear when the first clutch (31) engages the second clutch (32) or the manual operating means (40) locks the second clutch (32) to the front handle (20); the front handle (20) hand is in a free state when the first clutch (31) is disengaged from the second clutch (32) and the manual operating device (40) releases the second clutch (32) from the front handle (20);

wherein the front handle (20) is also adapted to actuate the manual operating means (40) when it is rotated from the reference position in a second direction (E) opposite to the first direction (D), so that the manual operating means (40) releases the second clutch (32) from the front handle (20).

2. The door lock (200) according to claim 1, characterized in that said manual operating means (40) comprise:

the locking piece (42) is movably arranged on the second clutch piece (32), a locking groove (21) is formed in the front handle (20), and the locking piece (42) is used for being in plug-in fit with the locking groove (21);

a trigger (43) for changing position upon rotation relative to the second clutch (32) to prevent the locking member (42) from exiting the locking slot (21) or to allow the locking member (42) to exit the locking slot (21) such that the locking member (42) locks or releases the second clutch (32) with the front handle (20);

when the locking piece (42) locks the second clutch piece (32) with the front handle (20), the front handle (20) is further used for driving the second clutch piece (32) to rotate relative to the trigger piece (43) and driving the locking piece (42) to exit the locking groove (21) when the front handle (20) rotates along a second direction (E) from the reference position so as to release the second clutch piece (32) with the front handle (20).

3. A door lock (200) according to claim 2, wherein the trigger member (43) is provided with a recess (431) in its peripheral wall, and rotation of the trigger member (43) relative to the second clutch member (32) causes the recess (431) to be aligned with or misaligned with the locking member (42);

when the locking piece (42) is inserted into the locking groove (21) and the concave part (431) is staggered with the locking piece (42), the trigger piece (43) can prevent the locking piece (42) from exiting the locking groove (21) so that the locking piece (42) locks the second clutch piece (32) with the front handle (20); when the recess (431) is aligned with the locking piece (42), the trigger piece (43) can allow the locking piece (42) to exit the locking groove (21) so that the locking piece (42) releases the second clutch piece (32) from the front handle (20);

when the locking piece (42) locks the second clutch piece (32) with the front handle (20), the front handle (20) is used for driving the second clutch piece (32) and the locking piece (42) to rotate together relative to the trigger piece (43) when the front handle (20) rotates along the second direction (E) from the reference position, so that the locking piece (42) is withdrawn from the locking groove (21) when the concave part (431) is aligned with the locking piece (42).

4. The door lock (200) according to claim 3, wherein the front handle (20) has a sleeve portion (22), the locking groove (21) is disposed on the sleeve portion (22), the sleeve portion (22) is sleeved on the outside of the second clutch (32), and the second clutch (32) is sleeved on the outside of the trigger (43);

and a sliding hole (321) for the locking piece (42) to move along the radial direction of the rotating shaft (11) is formed in the second clutch piece (32), and the sliding hole (321) penetrates through the inner peripheral wall and the outer peripheral wall of the second clutch piece (32).

5. The door lock (200) according to any one of claims 2 to 4, characterized in that the first clutch member (31) has a first position engaging with the second clutch member (32) and a second position disengaging from the second clutch member (32);

the door lock (200) further comprises a front mounting plate (50), the front handle (20) is rotatably arranged on the front mounting plate (50), the first clutch member (31) is circumferentially locked with the front mounting plate (50) when in the second position, and the first clutch member (31) can circumferentially rotate relative to the front mounting plate (50) when in the first position;

and a first limiting structure (80) is arranged between the first clutch piece (31) and the trigger piece (43), and when the locking piece (42) locks the second clutch piece (32) and the front handle (20) and the first clutch piece (31) is located at the second position, the first limiting structure (80) is used for preventing the trigger piece (43) from following the second clutch piece (32) to rotate along the second direction (E) when the front handle (20) rotates along the second direction (E) from the reference position.

6. The door lock (200) according to claim 5, characterized in that the first limit structure (80) comprises a first stop (81) and a second stop (82);

the first stopping portion (81) is arranged on the first clutch member (31), the triggering member (43) is provided with a central hole (432), the second stopping portion (82) is arranged on the hole wall of the central hole (432) in a protruding mode, the first stopping portion (81) is inserted into the central hole (432), and the second stopping portion (82) is used for abutting against the first stopping portion (81) so as to prevent the triggering member (43) from following the second clutch member (32) to rotate along the second direction (E) when the front handle (20) rotates along the second direction (E) from the reference position.

7. A door lock (200) according to claim 5, characterized in that a second stop structure (90) is provided between said first clutch (31) and said front handle (20);

the second limit structure (90) is configured to drive the first clutch (31) to rotate in the first direction (D) when the first clutch (31) is in the first position and the front handle (20) rotates in the first direction (D) from the reference position, and the second limit structure (90) is further configured to allow the front handle (20) to rotate in the first direction (D) and the second direction (E) from the reference position relative to the first clutch (31) when the first clutch (31) is in the second position.

8. The door lock (200) according to any one of claims 2 to 4, wherein the door lock (200) further comprises a micro switch (100), the micro switch (100) being mounted to the front handle (20);

the trigger piece (43) is provided with a trigger part (433), and the trigger piece (43) is used for enabling the trigger part (433) to trigger the microswitch (100) when rotating relative to the second clutch piece (32) so as to enable the microswitch (100) to generate a first signal, so that the door lock (200) is in a grading permission mode; the front handle (20) is used for driving the microswitch (100) to rotate when the front handle rotates from the reference position to the first direction (D), so that the trigger part (433) triggers the microswitch (100), and the microswitch (100) generates a second signal to cancel the grading authority mode.

9. The door lock (200) according to claim 8, wherein a third limit structure (110) is arranged between the rotating shaft (11) and the front handle (20);

the third limiting structure (110) is used for enabling the front handle (20) to rotate along the first direction (D) from the reference position along with the rotating shaft (11) when the rear handle (10) rotates along the first direction (D), so that the front handle (20) drives the microswitch (100) to rotate, and the triggering portion (433) triggers the microswitch (100) to cancel the grading permission mode; the third limiting structure (110) is further used for allowing the front handle (20) to rotate relative to the rotating shaft (11) when rotating in the first direction (D) from the reference position.

10. The door lock (200) according to claim 9, wherein the front handle (20) is provided with a stopper (120), and the stopper (120) is provided with a hole for the rotating shaft (11) to penetrate through;

the third limiting structure (110) comprises a third stopping portion (1101) protruding on the hole wall of the hole and a fourth stopping portion (1102) arranged on the rotating shaft (11), and the fourth stopping portion (1102) is used for abutting against the third stopping portion (1101) so that the front handle (20) can rotate along the first direction (D) from the reference position along with the rotating shaft (11) when the rear handle (10) rotates along the first direction (D).