CN220301949U - Mechanical password unlocking device for door lock - Google Patents

Abstract

The utility model relates to the field of coded locks, in particular to a mechanical coded unlocking device for a door lock. The unlocking device includes: the device comprises a shell, a mechanical coded lock assembly, a toggle rod driving assembly, a cam unlocking assembly and an auxiliary door opening assembly. The device can be arranged on the intelligent door lock, the position of a correct password is rotated through the code adjusting wheel on the mechanical coded lock assembly, then the unlocking pushing key is shifted right, the axle core moves upwards, the unlocking pushing key can enable the chute to drive the first axle head to lift the axle core, the locking piece is separated from the locking groove to release the rotation restriction of the first cam, the shifting lever is continuously shifted, the first cam drives the lever and the bolt to move upwards, the handle is inserted into the first driving connection port at last, the handle is rotated clockwise, and the auxiliary door opening assembly is driven to rotate so as to drive the transmission assembly to unlock the lock body of the intelligent door lock. The door lock can be unlocked by pulling the mechanical lock and the coded lock when the door cannot be accessed by using the coded without a key.

Description

Mechanical password unlocking device for door lock

Technical Field

The utility model relates to the field of coded locks, in particular to a mechanical coded unlocking device for a door lock.

Background

The coded lock is one kind of lock, and is opened with a series of numbers or symbols. The combination of the combination lock is usually only arranged instead of actually combined. Only one rotary disc is used for part of coded locks, and a plurality of discs or cams in the locks are rotated; some coded locks are also a set of rims engraved with numbers, which directly drive the mechanism inside the lock.

At present, most of the burglary-resisting doors on the market adopt an electronic coded lock, such as an intelligent door lock disclosed in Chinese patent application (application number 201910632435.0), the intelligent door lock comprises a lock cylinder, an inner assembly and an outer assembly, the inner assembly and the outer assembly are respectively positioned at two sides of the lock cylinder, a first information acquisition module, an input module and a second information acquisition module are arranged on an outer shell, a storage module, a control module and a power module are arranged in the outer shell, the first information acquisition module comprises a camera and a processing chip and is used for acquiring image information and transmitting the acquired image information to the storage module, the input module is electrically connected with the storage module and the control module, the storage module is used for storing unlocking information, the control module generates unlocking signals and controls and drives the lock cylinder to unlock, and the power module is used for supplying power to the first information acquisition module, the input module, the second information acquisition module, the storage module, the control module and the lock cylinder. The intelligent door lock can be unlocked through the password, the fingerprint and the key, but the intelligent password lock is powered by a battery, if the battery is not enough, or the password and the fingerprint are invalid due to the fact that an internal intelligent module circuit is damaged after long-term use, and people cannot enter and exit the door under the condition that the intelligent door lock is not provided with the key.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a mechanical password unlocking device for a door lock, and when people cannot enter a home door without a key and cannot use a password, the door lock can be unlocked by pulling a part of a mechanical lock password lock.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a mechanical combination unlocking device for a door lock, the unlocking device comprising: the device comprises a shell, a mechanical coded lock assembly, a toggle rod driving assembly, a cam unlocking assembly and an unlocking transmission output assembly; the toggle rod driving assembly, the cam unlocking assembly and the unlocking transmission output assembly are arranged on the shell; the mechanical coded lock assembly comprises a shaft core, a locking ring and a plurality of code adjusting wheels, and locks or unlocks the axial movement of the shaft core through the matching of the locking ring and the code adjusting wheels; the toggle rod driving assembly comprises a toggle rod and a first cam, the first cam is sleeved on the upper part of the shaft core, a first cam groove is formed in the first cam, the toggle rod is fixedly arranged on the first cam and can toggle the first cam to rotate on the shaft core, a toggle rod groove is formed in the front panel of the shell at the position of the toggle rod, and the outer side end of the toggle rod is exposed out of the toggle rod groove; the cam unlocking assembly comprises a locking piece, an unlocking pushing key and a locking piece, wherein one side of the locking piece is connected with the end part of the shaft core, and the other side of the locking piece locks the rotation of the first cam; the unlocking pushing key is arranged on a slide way in the shell, and the driving of the unlocking pushing key can enable the chute to drive the first shaft head to lift the shaft core so that the locking piece is separated from the locking groove to release the rotation restriction of the first cam; the unlocking transmission output assembly comprises an unlocking rotating shaft and a locking piece for locking the unlocking rotating shaft to rotate, one end of the unlocking rotating shaft is provided with a first driving connecting port for connecting a handle, and the other end of the unlocking rotating shaft is provided with a second connecting port for driving a door lock to unlock; and a transmission member is arranged between the locking member and the first cam, and the rotation of the first cam drives the transmission member to enable the locking member to release the rotation restriction of the unlocking rotation shaft.

Preferably, the transmission part is a driving lever, and the locking part is a bolt; the middle part of the driving lever is hinged to the right side of the first cam, the bolt is vertically arranged on a slide way in the shell, the unlocking rotating shaft is arranged below the bolt, a front panel of the unlocking rotating shaft, which is exposed out of the shell, is provided with a first driving connecting port for connecting a handle, and a rear panel of the unlocking rotating shaft, which is exposed out of the shell, is provided with a second connecting port for driving a door lock to be unlocked; one end of the driving lever is provided with a second shaft head which is accommodated in the first cam groove, the other end of the driving lever is positioned in a connecting notch at the upper part of the bolt, and the lower part of the bolt can be inserted into a locking hole on the unlocking rotating shaft to lock the rotation of the unlocking rotating shaft; the driving deflector rod can stir the first cam to rotate, and the second shaft head is driven by the first cam groove to enable the driving lever to lift the bolt to release the rotation restriction of the unlocking rotating shaft.

Preferably, a mounting notch is formed in the shell, the mechanical coded lock assembly is fixedly arranged in the mounting notch, a plurality of through grooves are formed in the front panel of the shell, and the plurality of code adjustment wheels are exposed out of the outer sides of the through grooves through the through grooves.

Preferably, a first guide groove is formed in the outer shell, a locking groove is formed in the outer side end portion of the first cam in the radial direction, and the other side of the locking piece is located in the first guide groove and the locking groove to lock rotation of the first cam.

Preferably, the unlocking pushing key is provided with a pushing block which is exposed out of the front panel of the outer shell, the inner side of the unlocking pushing key is provided with a chute, one side of the end part of the shaft core, which faces the chute, is provided with a first shaft head, and the first shaft head is accommodated in the chute.

Preferably, the unlocking device further comprises a password resetting assembly, the password resetting assembly comprises a second cam, the second cam is sleeved on the shaft core and is positioned below the first cam, and the lower part of the second cam abuts against the locking ring; the first spring is arranged at the bottom of the mechanical coded lock assembly, one end of the first spring is abutted against the mechanical coded lock assembly, and the other end of the first spring is abutted against the shell; one side of the second cam, which faces the first cam, is provided with a second cam groove, the first cam is provided with a driving block, and the driving block is positioned on the second cam groove; after the rotation restriction of the unlocking rotation shaft is released by stirring the deflector rod, the deflector rod is continuously stirred, the driving block of the first cam presses down the second cam through the second cam groove to enable the lock ring to realize password resetting, and after the password resetting, the mechanical password lock assembly is reset through the first spring.

Preferably, a positioning block is arranged on the outer ring surface of the second cam, a second guide groove for locking the second cam to rotate is arranged on the shell, and the positioning block is connected in the second guide groove in a sliding mode.

Preferably, a positioning plate is further arranged on the outer ring surface of the second cam, and the positioning plate is positioned on one side of the second cam groove; the shell is provided with a screw in threaded connection, and the screw is arranged below the positioning plate.

Preferably, the shaft core is provided with a lug, the inner surface of the locking ring is provided with a C-shaped ring, and the lug is arranged at the lower part of the C-shaped ring; when the deflector rod is stirred, the shaft core moves axially, and the lug is clamped in the notch of the C-shaped ring for determining the password.

Preferably, a buckle is arranged on the outer surface of the locking ring, a rack is arranged on the inner surface of the code adjusting wheel, and the buckle is clamped on the rack.

Preferably, the buckle comprises a small buckle for fixing the code adjusting wheel on the lock ring and a large buckle for adjusting the code positioning function, and the large buckle is slidingly connected in a gap between the two racks; wherein the length of the big buckle is longer than that of the small buckle, and the tops of the big buckle and the small buckle are positioned at the same level.

Preferably, the connecting notch comprises a protruding structure for fixing the lever and a recessed structure for turning the lever, the protruding structure is arranged on the left side of the connecting notch, and the recessed structure is arranged on the right side of the connecting notch.

Preferably, the first driving connection port is a hexagonal groove.

A second object of the present utility model is to provide a method for using a mechanical combination lock assembly, comprising the following steps in sequence:

(S1) firstly, turning a code adjusting wheel on a mechanical coded lock to a position of a correct code, and unlocking axial movement of a shaft core;

(S2) then toggle the unlocking push key to the right to enable the chute to drive the first shaft head to lift the shaft core so as to enable the locking piece to be separated from the locking groove to release the rotation restriction of the first cam;

(S3) rotating the deflector rod leftwards, driving the second shaft head through the first cam groove to enable the driving lever to lift the bolt to release the rotation restriction of the unlocking rotation shaft;

and (S4) finally, inserting the handle into the first driving connecting port, rotating the handle clockwise, and driving the lock cylinder to rotate through a connecting shaft arranged on the first driving connecting port, so that the door lock can be unlocked.

By adopting the technical scheme, the device can be arranged on the intelligent door lock, the code adjusting wheel on the mechanical coded lock assembly is rotated to the position of a correct code, then the unlocking pushing key is shifted to the right, at the moment, the shaft core moves upwards, the unlocking pushing key can drive the chute to drive the first shaft head to lift the shaft core so that the locking piece is separated from the locking groove to release the rotation restriction of the first cam, the shifting lever is continuously shifted, the first cam drives the lever and the bolt to move upwards, and finally the handle is inserted into the first driving connection port to rotate clockwise, so that the unlocking transmission output assembly is driven to rotate to drive the transmission assembly to unlock the lock body of the intelligent door lock. The door lock can be unlocked by pulling the mechanical lock and the coded lock when the door cannot be accessed by using the coded without a key.

Drawings

Fig. 1 and 2 are schematic diagrams of explosion structures of the intelligent door lock of the utility model.

Fig. 3 is a schematic structural view of the mechanical unlocking member.

Fig. 4 is a schematic structural view of the transmission assembly.

Fig. 5 is a schematic view of the mounting structure of the transmission assembly on the external fixing sheet metal.

Fig. 6 is a schematic structural view of the manual unlocking member.

Fig. 7 is a schematic structural diagram of a mechanical combination lock.

Fig. 8 is a schematic view of the back structure of the mechanical combination lock.

Fig. 9 and 10 are schematic views of the internal structure of the mechanical coded lock.

Fig. 11 and 12 are schematic structural views of a tap lever driving assembly.

Fig. 13 is a schematic structural view of a mechanical combination lock assembly.

Fig. 14 and 15 are schematic structural views of the housing.

Fig. 16 is a schematic structural view of the code wheel.

Detailed Description

The utility model will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present utility model, and a detailed implementation is given, but the scope of protection of the present utility model is not limited to the following embodiments.

The novel intelligent door lock with the mechanical password auxiliary door opening function is shown in fig. 1 and 2, and comprises a base 101, an inner fixing metal plate 102, a lock body 103, an outer fixing metal plate 104, an outer end cover 105, an intelligent unlocking part 106, a manual unlocking part 107 and a handle 113, wherein the base 101 and the inner fixing metal plate 102 are located on the inner side of the door, the outer end cover 105 and the outer fixing metal plate 104 are located on the outer side of the door, the lock body 103 is arranged between the outer fixing metal plate 104 and the inner fixing metal plate 102, and the intelligent unlocking part 106 and the manual unlocking part 107 are arranged on the base 101 and used for unlocking the lock body 103. As shown in fig. 3, the door lock further includes a mechanical unlocking component 108 and a handle 109, the mechanical unlocking component 108 includes a mechanical coded lock 110 and a transmission assembly 111 for driving the lock body 103 to unlock, the mechanical coded lock 110 is fixedly disposed on the outer side of the outer fixing metal plate 104, the transmission assembly 111 is disposed on the inner side of the inner fixing metal plate 102, the outer end cover 105 is disposed on the outer side of the outer fixing metal plate 104 in a covering manner, and an opening cover 112 is disposed at the position of the mechanical coded lock 110 to enable the mechanical coded lock 110 to be exposed out of the outer end cover 105. As shown in fig. 7 and 8, the mechanical coded lock 110 includes a housing 1, a mechanical coded lock assembly 2, a toggle lever driving assembly 3, a cam unlocking assembly 4, and an unlocking transmission output assembly 5, where the housing 1 is fixedly disposed on an external fixing sheet metal 104, and the toggle lever driving assembly), the cam unlocking assembly 4, and the unlocking transmission output assembly 5 are mounted on the housing 1. The mechanical coded lock assembly 2 is connected with the unlocking transmission output assembly 5, the mechanical coded lock assembly 2 locks or unlocks the unlocking transmission output assembly 5 to rotate, a first connecting port 53 for driving a handle 109 is arranged at the outer side end of the unlocking transmission output assembly 5, a second connecting port 54 is arranged at the inner side end of the unlocking transmission output assembly, the second connecting port 54 is in transmission connection with the transmission assembly 111, and the unlocking transmission output assembly 5 is driven to rotate through the handle 109 to drive the transmission assembly 111 to unlock the lock body 103. The handle of the utility model can be a hexagonal wrench, and the hexagonal wrench can be contained in the opening cover 112, and other positions of the handle 113 can be arranged, so that the handle is convenient for a user to find.

As shown in fig. 13, the mechanical combination lock 110 may be a conventional mechanical combination lock; the first spring comprises a shaft core 21, a locking ring 22, a plurality of code adjusting wheels 23 and a reset locking ring 22, and locks or unlocks the axial movement of the shaft core 21 through the matching of the locking ring 22 and the code adjusting wheels 23; the casing 1 is internally provided with a mounting notch 11, the mechanical coded lock 2 is fixedly arranged in the mounting notch 11, a plurality of through grooves 12 are formed in the front panel of the casing 1, and a plurality of code adjustment wheels 23 are partially exposed out of the through grooves 12 through the through grooves 12. The shaft core 21 is provided with a lug 26, the inner surface of the locking ring 22 is provided with a C-shaped ring 25, and the lug 26 is arranged at the lower part of the C-shaped ring 25; when the shift lever 32 is shifted, the shaft core 21 moves axially, and the protruding block 26 is clamped in the notch of the C-shaped ring 25 for determining the password. The outer surface of the lock ring 22 is provided with a buckle 27, the inner surface of the code adjusting wheel 23 is provided with a rack 28, and the buckle 27 is clamped on the rack. The buckle 27 comprises a small buckle 271 for fixing the code adjustment wheel 23 on the lock ring 22 and a large buckle 272 for adjusting the code positioning function, and the large buckle 272 is slidingly connected in the gap between the two racks 28; wherein the length of the big button 272 is longer than the small button 271, and the tops of the big button 272 and the small button 271 are at the same level.

According to the utility model, as the code adjusting wheel 23 is clamped on the buckle 27 through the rack 28 on the inner surface of the code adjusting wheel 23, the lock ring 22 is driven to rotate together when the code adjusting wheel 23 is rotated, so that the notch part of the C-shaped ring 25 is positioned at the same vertical position, and when the shaft core 21 moves upwards afterwards, the convex block 26 can be clamped in the notch of the C-shaped ring 25. When the password of the mechanical coded lock 2 needs to be replaced, the large buckle 272 can slide in the gap between the two racks 28 because the length of the large buckle 272 is longer than that of the small buckle 271, and the large buckle 272 replaces the small buckle 271 to perform the function of positioning the password.

As shown in fig. 9-10, the lever driving assembly 3 includes a lever 32 and a first cam 31, the first cam 31 is sleeved on the upper portion of the shaft core 21, a first cam groove 34 is provided on the first cam 31, the lever 32 is fixedly provided on the first cam 31 and can rotate on the shaft core 21 by pulling the first cam 31, a lever groove 13 is provided on the front panel of the housing 1 at the position of the lever 32, and the outer end of the lever 32 exposes out of the lever groove 13.

As shown in fig. 9-10, the cam unlocking assembly 4 comprises a locking piece 41, an unlocking push key 42 and a second spring 7 for resetting the unlocking push key 42, one side of the locking piece 41 is connected with the end part of the shaft core 21, a first guide groove 14 is arranged on the outer shell 1, a locking groove 43 is radially arranged at the outer end part of the first cam 31, and the other side of the locking piece 41 is positioned in the first guide groove 14 and the locking groove 43 to lock the rotation of the first cam 31; the unlocking push key 42 is transversely arranged on a slide way in the shell 1, a push block 44 exposing the front panel of the shell 1 is arranged on the outer side of the unlocking push key 42, a chute 45 is arranged on the inner side of the unlocking push key 42, a first shaft head is arranged at one side, facing the chute 45, of the end part of the shaft core 21, and the first shaft head is accommodated in the chute 45; one end of the second spring 7 is abutted against the right end of the unlocking push key 42, and the other end of the second spring 7 is abutted against the shell 1; driving the unlocking push key 42 can make the chute 45 drive the first shaft head to lift the shaft core 21, make the locking piece 41 break away from the locking groove 43 to release the rotation restriction of the first cam 31, and then reset the cam unlocking assembly 4 through the second spring 7.

As shown in fig. 9 to 10, the unlocking transmission output assembly 5 includes a driving lever 50, a latch 51, an unlocking rotation shaft 52, and a third spring 8 for resetting the unlocking rotation shaft 52; the middle part of the driving lever 50 is hinged on the right side of the first cam 31, the bolt 51 is vertically arranged on a slide way in the shell 1, the unlocking rotation shaft 52 is arranged below the bolt 51, the front end of the unlocking rotation shaft 52 is exposed out of the front panel of the shell 1, a first driving connection port 53 for connecting the handle 109 is arranged on the front panel, and the rear end of the unlocking rotation shaft 52 is exposed out of the rear panel of the shell 1, and a second connection port 54 for connecting the transmission assembly 111 is arranged on the rear panel; one end of the driving lever 50 is provided with a second shaft head 55, the second shaft head 55 is accommodated in the first cam groove 34, the other end of the driving lever 50 is positioned in a connecting notch 56 at the upper part of the latch 51, and the lower part of the latch 51 can be inserted into a locking hole on the unlocking rotating shaft 52 to lock the rotation of the unlocking rotating shaft 52. A third spring 8 is arranged in the unlocking rotation shaft 52, one end of the third spring 8 is abutted against the bolt 51, and the other end is abutted against the inner wall of the unlocking rotation shaft 52; the driving deflector rod 32 can stir the first cam 31 to rotate, the second shaft head 55 is driven by the first cam groove 34 to enable the driving lever 50 to lift the plug pin 51 to release the rotation restriction of the unlocking rotation shaft 52, and after the unlocking device unlocks the lock cylinder, the unlocking transmission output assembly 5 is reset by the third spring 8.

As shown in fig. 10, the connection slot 56 includes a protrusion 57 for fixing the lever 50 and a recess 58 for turning the lever 50, the protrusion 57 being provided at the left side of the connection slot 56, and the recess 58 being provided at the right side of the connection slot 56. After driving the tap lever driving assembly 3 and the cam unlocking assembly 4, the lever 50 moves from the left end to the right end of the first cam groove 34, and at the same time, the lever 50 performs a counterclockwise lifting action due to the fact that the middle part of the lever 50 is fixed on the housing, moves from the lower concave structure 58 of the connecting notch 56 to the upper concave structure 58, and then drives the unlocking transmission output assembly 5, and opens the lock cylinder to complete unlocking. The first driving connection port 53 is a hexagonal groove, and the lock cylinder can be opened only by using a hexagonal wrench, so that the safety of the device is ensured.

When the utility model is unlocked, the correct number reaches the position right above the shell 1 by pulling the code adjusting wheel 23, and the lug 26 on the shaft core 21 is positioned right below the notch of the C-shaped ring 25. After the number is determined, the unlocking push button 42 is moved rightward, at this time, the locking piece 41 moves axially, and since the chute 315 is disposed obliquely upward, when the unlocking push button 42 is moved, the shaft core 21 moves upward, and the boss 26 on the shaft core 21 is clamped in the notch of the C-shaped ring 25.

At this time, the locking piece 41 locked on the shaft core 21 moves upward from the first guide groove 14, so that it is completely separated from the first guide groove 14. When the locking piece 41 is not locked, the shifting lever 32 can rotate freely, the rotating angle of the shifting lever 32 is 60-DEG 70 DEG, and the state of the shifting lever 32 is an opening state at the moment.

When the lever 32 is in the open state, the lever 50 moves from the left end of the first cam groove 34 to the right end of the first cam groove 34, and since the slope 9 is provided on the middle portion of the first cam groove 34 and the plane height of the left end is higher than that of the right end, the lever 50 performs a small-range counterclockwise lifting movement of one end.

When the movement of the lever 50 is completed, the latch 51 releases the rotation restriction of the unlocking rotation shaft 52. The handle is inserted into the first connection port 53 of the unlocking rotation shaft 52, and rotated clockwise, and the latch 51 is rotated counterclockwise.

As shown in fig. 3-5, the transmission assembly 111 includes a connecting square shaft 114, a steering assembly 115, and a transmission rod 116; the steering assembly 115 comprises a connecting shaft 117 and a connecting sheet 118, the connecting shaft 117 is rotatably connected to the inner fixed sheet metal 102 right behind the second connecting port 54, one end of the connecting square shaft 114 is connected and arranged in the second connecting port 54, the other end of the connecting square shaft passes through the outer fixed sheet metal 104 to be connected with the connecting shaft 117, and the connecting shaft 117 passes through the inner fixed sheet metal 102 to be connected with the connecting sheet 118; the transmission rod 116 is vertically arranged in the chute of the inner fixed sheet metal 102, the upper end of the transmission rod 116 is in transmission connection with the outer end of the connecting sheet 118, the bottom of the transmission rod 116 is provided with a hook 119, and a convex strip 120 for connecting the hook 119 is arranged on the driving rotating shaft of the manual unlocking part 107; when the connection square shaft 114 rotates, the transmission rod 116 can be lifted upwards, and the hook 119 drives the convex strip 120 to rotate the driving shaft 121 of the manual unlocking member 107 to unlock the lock body 103. As shown in fig. 5, the inner fixing metal plate 102 is provided with a plurality of L-shaped limiting plates 124, the L-shaped limiting plates 124 are provided with notches, the transmission rod 116 is slidably arranged in the notches, the lower part of the transmission rod 116 is provided with a vertical groove 125, the inner fixing metal plate 102 is provided with a sliding rod 126, and the vertical groove 125 is arranged on the sliding rod 126; the top of the transmission rod 116 is provided with a transverse groove 127, the outer side end of the connecting sheet 118 is provided with a pull rod 128, and the pull rod 128 is positioned in the transverse groove 127.

As shown in fig. 4 and 5, the bottom of the transmission rod 116 is provided with a left hook 119 and a right hook 119; the left hook 119 is formed at the bottom of the transmission rod 116, and an L-shaped connector 122 is fixedly disposed at the lower portion of the transmission rod 116, and the right hook 119 is formed at the right bottom of the L-shaped connector 122. As shown in fig. 6, a prismatic plate 123 is provided on the driving shaft 121 of the manual unlocking member 107, and the protruding strip 120 is fixedly provided on one side of the prismatic plate 123. When the installation direction of the lock is changed, the convex strips 120 of the prismatic plate 123 are changed to the direction, and the convex strips 120 are hooked by the right hook 119, so that the installation direction of the lock can be changed conveniently.

As shown in fig. 11, the mechanical coded lock 110 further includes a code resetting device, where the code resetting device includes a second cam 33 and a first spring, the second cam 33 is sleeved on the shaft core 21 and is located below the first cam 31, and the lower part of the second cam 33 abuts against the lock ring 22; the first spring is arranged at the bottom of the mechanical coded lock 2, one end of the first spring is abutted against the mechanical coded lock 2, and the other end of the first spring is abutted against the shell 1; the second cam 33 is provided with a second cam groove 35 toward one side of the first cam 31, the first cam 31 is provided with a driving block 36, and the driving block 36 is positioned on the second cam groove 35; after the toggle lever 32 is toggled to release the rotation restriction of the unlocking rotation shaft 52, the toggle lever 32 is continuously toggled, the driving block 36 of the first cam 31 presses down the second cam 33 through the second cam groove 35, so that the lock ring 22 can realize password resetting, and after the password resetting, the mechanical password lock 2 is reset through the first spring. According to fig. 2 and 7, a positioning block 38 is provided on the outer ring surface of the second cam 33, and a second guiding groove 39 for locking the second cam 33 from rotating is provided on the housing 1. The second cam 33 is slidably connected to the second guide groove 39 of the housing 1 through the positioning block 38, so that the driving block 36 can be well moved from the second cam groove 35 to the position where the second cam 33 is abutted against one surface of the first cam 31, and at this time, the second cam 33 only moves axially, so that the stability of the device can be ensured, and the password resetting operation can be more conveniently performed. As shown in fig. 1 and 2, a positioning plate 331 is further provided on the outer circumferential surface of the second cam 33, and the positioning plate 331 is located on one side of the second cam groove 35; the shell 1 is provided with a screw 15 in threaded connection, and the screw 15 is arranged below the positioning plate 331; when the shift lever 32 drives the second cam 33 to reset the code, the second cam 33 moves axially, and the positioning plate 331 abuts against the screw 15 to prevent the code from being changed.

By additionally arranging the password resetting device on the unlocking device, a customer can set a desired password according to the needs of the customer. By pulling the shift lever 32, the driving block 36 on the first cam 31 moves from the right end to the left end of the second cam groove 35, when the rotation restriction of the unlocking rotation shaft 52 is released, the shift lever 32 is continuously pulled, the driving block 36 moves out of the second cam groove 35, so that the second cam 33 is pressed down, and when the second cam 33 moves axially, the lock ring 22 also moves axially, so that the mechanical coded lock 2 can be driven to reset the code.

By adding the screw 15 at the lower part of the deflector rod 32 and arranging it at the lower part near the positioning plate 331, the movement of the positioning plate 331 is limited; when the combination is to be replaced, the screw 15 is removed, and when the lever 32 is rotated, the drive block 36 is slid from the right end of the second cam groove 35 to the left end of the second cam groove 35 and moved out to the second cam groove 35 by the inclined slope 37, and the rotation angle of the lever 32 is 90 ° -110 °.

Since the bottom end of the second ring portion abuts against the lock ring 22, when the driving block 36 moves out to the second cam groove 35, the lock ring 22 also moves downward, and at this time, the code can be freely rotated.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A mechanical code unlocking device for a door lock, the unlocking device comprising: the device comprises a shell (1), a mechanical coded lock (2), a toggle rod driving assembly (3), a cam unlocking assembly (4) and an unlocking transmission output assembly (5); the toggle rod driving assembly (3), the cam unlocking assembly (4) and the unlocking transmission output assembly (5) are arranged on the shell (1); the mechanical coded lock (2) comprises a shaft core (21), a locking ring (22) and a plurality of code adjusting wheels (23), and is used for locking or unlocking the axial movement of the shaft core (21) in a matched mode through the locking ring (22) and the code adjusting wheels (23); the toggle rod driving assembly (3) comprises a toggle rod (32) and a first cam (31), the first cam (31) is sleeved on the upper part of the shaft core (21), a first cam groove (34) is formed in the first cam (31), and the toggle rod (32) is fixedly arranged on the first cam (31) and can toggle the first cam (31) to rotate on the shaft core (21); the cam unlocking component (4) comprises a locking piece (41) and an unlocking pushing key (42), one side of the locking piece (41) is connected with the end part of the shaft core (21), and the other side of the locking piece (41) locks the rotation of the first cam (31); the unlocking pushing key (42) is arranged on a slide way in the shell (1); the unlocking pushing key (42) is driven to enable the chute (45) to drive the first shaft head to lift the shaft core (21) so that the locking piece (41) is separated from the locking groove (43) to release the rotation restriction of the first cam (31); the unlocking transmission output assembly (5) comprises an unlocking rotating shaft (52) and a locking piece for locking the unlocking rotating shaft (52) to rotate, a first driving connecting port (53) for connecting a handle is arranged at one end of the unlocking rotating shaft (52), and a second connecting port (54) for driving a door lock to unlock is arranged at the other end of the unlocking rotating shaft; and a transmission member is arranged between the locking member and the first cam (31), and the rotation of the first cam (31) drives the transmission member to enable the locking member to release the rotation restriction of the unlocking rotation shaft (52).

2. A mechanical code unlocking device for door locks according to claim 1, characterized in that the transmission member is a driving lever (50) and the locking member is a bolt (51); the middle part of the driving lever (50) is hinged to the right side of the first cam (31), the bolt (51) is vertically arranged on a slide way in the shell (1), the unlocking rotating shaft (52) is arranged below the bolt (51), a front panel of the unlocking rotating shaft (52) exposed out of the shell (1) is provided with a first driving connecting port (53) for connecting a handle, and a rear panel of the unlocking rotating shaft (52) exposed out of the shell (1) is provided with a second connecting port (54) for driving a door lock to unlock; one end of the driving lever (50) is provided with a second shaft head (55), the second shaft head (55) is accommodated in the first cam groove (34), the other end of the driving lever (50) is positioned in a connecting notch (56) at the upper part of the bolt (51), and the lower part of the bolt (51) can be inserted into a locking hole on the unlocking rotating shaft (52) to lock the rotation of the unlocking rotating shaft (52); the other end of the unlocking rotating shaft (52) is abutted against the inner wall of the unlocking rotating shaft (52); the driving deflector rod (32) can stir the first cam (31) to rotate, and the second shaft head (55) is driven by the first cam groove (34) to enable the driving lever (50) to lift the plug pin (51) to release the rotation restriction of the unlocking rotating shaft (52).

3. The mechanical coded unlocking device for the door lock according to claim 1, wherein a mounting notch (11) is formed in the shell (1), the mechanical coded lock (2) is fixedly arranged in the mounting notch (11), a plurality of through grooves (12) are formed in the front panel of the shell (1), and a plurality of code adjustment wheels (23) are partially exposed out of the through grooves (12) through the through grooves (12); and a poking rod groove (13) is arranged on the front panel of the shell (1) at the position of the poking rod (32), and the poking rod groove (13) is exposed at the outer side end of the poking rod (32).

4. A mechanical code unlocking device for a door lock according to claim 1, characterized in that the outer housing (1) is provided with a first guide groove (14), the outer end of the first cam (31) is radially provided with a locking groove (43), and the other side of the locking piece (41) is located in the first guide groove (14) and the locking groove (43) to lock the rotation of the first cam (31).

5. A mechanical code unlocking device for door locks according to claim 1, characterized in that the outside of the unlocking push key (42) is provided with a push block (44) which is exposed out of the front panel of the outer shell (1), the inside is provided with a chute (45), the end part of the shaft core (21) is provided with a first shaft head towards one side of the chute (45), and the first shaft head is accommodated in the chute (45).

6. A mechanical code unlocking device for a door lock according to claim 1, characterized in that it further comprises a code resetting assembly comprising a second cam (33), the second cam (33) being fitted over the spindle (21) and being located under the first cam (31), the under of the second cam (33) being in abutment with the lock collar (22); the bottom of the mechanical coded lock (2) is provided with a first spring (6), one end of the first spring (6) is abutted against the mechanical coded lock (2), and the other end is abutted against the shell (1); a second cam groove (35) is formed in one side, facing the first cam (31), of the second cam (33), a driving block (36) is arranged on the first cam (31), and the driving block (36) is positioned on the second cam groove (35); after the toggle rod (32) releases the rotation restriction of the unlocking rotation shaft (52), the toggle rod (32) is continuously toggled, and the driving block (36) of the first cam (31) presses down the second cam (33) through the second cam groove (35) so that the lock ring (22) can realize password resetting.

7. The mechanical password unlocking device for the door lock according to claim 6, wherein a positioning block (38) is arranged on the outer ring surface of the second cam (33), a second guide groove (39) for locking the second cam (33) to rotate is arranged on the shell (1), and the positioning block (38) is slidingly connected in the second guide groove (39).

8. A mechanical code unlocking device for door locks according to claim 6, characterized in that the outer ring surface of the second cam (33) is further provided with a positioning plate (331), said positioning plate (331) being located on one side of the second cam groove (35); the shell (1) is provided with a screw (15) in threaded connection, and the screw (15) is arranged below the positioning plate (331).

9. A mechanical code unlocking device for a door lock according to claim 1, characterized in that the shaft core (21) is provided with a lug (26), the inner surface of the lock ring (22) is provided with a C-shaped ring (25), and the lug (26) is arranged at the lower part of the C-shaped ring (25); when the deflector rod (32) is stirred, the shaft core (21) moves axially, and the lug (26) is clamped in the notch of the C-shaped ring (25) for determining the password; a buckle (27) is arranged on the outer surface of the locking ring (22), a rack (28) is arranged on the inner surface of the code adjusting wheel (23), and the buckle (27) is clamped on the rack; the buckle (27) comprises a small buckle (271) for fixing the code adjusting wheel (23) on the lock ring (22) and a large buckle (272) for adjusting the code positioning function, and the large buckle (272) is slidingly connected in the gap of the two racks (28); wherein the length of the big button (272) is longer than that of the small button (271), and the tops of the big button (272) and the small button (271) are at the same level.

10. A mechanical code unlocking device for door locks according to claim 2, characterized in that the connection slot (56) comprises a protruding structure (57) for fixing the lever (50) and a recessed structure (58) for turning the lever (50), the protruding structure (57) being provided on the left side of the connection slot (56) and the recessed structure (58) being provided on the right side of the connection slot (56).