CN220100966U - Puzzle door lock - Google Patents

Abstract

The utility model relates to a coded door lock which comprises an unlocking rod, a coded wheel assembly, an executing piece, a mounting seat connected with the executing piece and a seat body, wherein the executing piece can rotate circumferentially relative to the seat body, the coded wheel assembly is arranged on the mounting seat, the coded lock assembly comprises a movable frame, a mandrel, a plurality of coded wheels and coded wheels for driving the coded wheels to rotate, part of the coded wheels are exposed out of the executing piece, the coded wheels can lock or unlock the movable frame, when the codes are correct, the coded wheels unlock the movable frame, the movable frame transversely slides on the mounting seat to unlock the movable frame and the seat body, and when the codes are wrong, the coded wheels lock the movable frame, and the movable frame cannot slide to lock between the movable frame and the seat body. By adopting the technical scheme, the utility model provides the password door lock which is simple in structure, reasonable in layout and convenient to operate, and the unlocking rod can be driven to rotate by pressing the execution piece and rotating the execution piece when the password is correct.

Description

Puzzle door lock

Technical Field

The utility model relates to the technical field of door locks, in particular to a password door lock.

Background

At present, the unlocking mode of the prior internal door lock is to unlock by adopting a mechanical key, and the unlocking can be realized by directly rotating the key to the corresponding position, but the unlocking mode has low safety coefficient and is easy to unlock technically, and meanwhile, the unlocking can be realized by carrying the key, once the key is lost, the lock is required to be pried, thus leading to the inconvenience that a user needs to carry a plurality of keys and carry and use. Therefore, the handle door lock equipped with the biometric recognition device such as fingerprint recognition, facial recognition, and even voice recognition is becoming popular in the market, however, the above recognition devices all need to be equipped with batteries for operation, when the batteries are low in power, the user needs to replace the battery in place in advance for charging, and once the batteries can be charged or replaced in real time, the user cannot unlock the lock.

The present chinese patent of the utility model with publication number CN214697315U discloses a cipher handle door lock, which comprises a lock bolt and an unlocking rod, which are arranged in the door, and an outer handle, which is arranged on the outdoor side of the door, wherein the outer handle can rotate and drive the unlocking rod to rotate to an unlocking position and a locking position, the unlocking rod can respectively drive the lock bolt to unlock and lock the door when being positioned at the unlocking position and the locking position, the cipher handle door lock further comprises a cipher wheel lock arranged on the outdoor side of the door, and the cipher wheel lock comprises: a housing; the mandrel is arranged in the shell; and the password wheel is arranged on the mandrel, the password wheel part is exposed outside the shell, when the password wheel lock is locked, the mandrel is locked by the password wheel and is clamped with the outer handle at the locking position so as to limit the rotation of the outer handle, and when the password wheel lock is unlocked, the mandrel can deviate from the outer handle to move so as to release the limitation of the rotation of the outer handle.

The password handle door lock can realize the limitation of opening and closing the door through the password wheel lock, can be unlocked through a specific password, does not need a key, and does not worry about the problem that the door lock cannot be unlocked or locked after power failure; however, the door lock has a complicated structure, occupies a large space when being installed on the door, and is inconvenient to install.

Disclosure of Invention

The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides the password door lock which is simple in structure, reasonable in layout and convenient to operate, and when the password is correct, the execution piece is pressed down and rotated to drive the unlocking rod to rotate, so that unlocking is realized.

The technical scheme of the utility model is as follows: the utility model provides a password lock, includes release lever and password wheel subassembly, still including executive component, mount pad and pedestal that is connected with the executive component, executive component can rotate for the pedestal circumference, password wheel subassembly sets up on the mount pad, password wheel subassembly includes removes frame, dabber, rotates a plurality of accent code wheel and the rotatory password wheel of drive accent code wheel of cover at the dabber, password wheel part exposes outside executive component, and accent code wheel can realize the locking or the unblock to removing the frame, and when the password was right, the accent code wheel is to removing the frame and is unlocked, rotatable executive component this moment, removes the frame and transversely slides on the mount pad, realizes the unblock of removing frame and pedestal, and when the password was wrong, transfers the code wheel to removing the frame and can't slide, realizes the locking between remove frame and the pedestal, and executive component circumference locking this moment, password wheel subassembly still has the first piece that resets of returning the frame, removes the frame and realizes locking position cooperation with the pedestal under the effect of first piece that resets.

By adopting the technical scheme, the code wheel is driven to rotate through rotating the code wheel, after the code is input correctly, the movable frame can transversely slide on the mounting seat and separate from the base body, the mounting seat can be driven to synchronously rotate at the moment, thereby the unlocking rod is driven to rotate, unlocking is realized, if the code is input incorrectly, the movable frame cannot move, the movable frame and the base body are locked, the actuating member cannot be rotated at the moment, unlocking cannot be realized, the movable frame resets under the action of the first resetting piece, locking position matching is realized with the base body, the movable frame can move when the code is correct, the movable frame is matched with the base body when the code is incorrect, the mounting seat and the actuating member cannot rotate, the unlocking cannot be realized, the whole door lock does not occupy space, the code wheel cannot lock the movable frame, and the unlocking device is safer, and has good safety performance.

The utility model is further provided with: the actuating part and the mounting seat can axially slide relative to the seat body, the mounting seat and the unlocking rod are arranged at intervals, the mounting seat can be directly or indirectly connected with the unlocking rod to realize circumferential rotation of the actuating part and the unlocking rod under the driving of the actuating part, and the seat body is provided with a second resetting part for resetting the mounting seat, so that the arrangement of the mounting seat and the unlocking rod at intervals can be realized.

By adopting the further arrangement, the safety performance of the coded lock is further enhanced, the installation seat can be connected with the unlocking rod to drive the unlocking rod to rotate after being pressed down by a certain distance, a certain distance is reserved between the installation seat and the unlocking rod, and even if the code correctly rotates the executing piece, the unlocking rod cannot be driven to rotate.

Still further, the present utility model provides: the one end that the executive component was kept away from to the mount pad is connected with the connecting seat, be equipped with the connecting block on the connecting seat, the unlocking lever is close to mount pad one end and is equipped with rather than synchronous pivoted roating seat, the corresponding connecting block position is equipped with the connecting groove on the roating seat, and the mount pad is when the downward slip under the drive of executive component, realizes in the connecting groove that the connecting block blocked into unlocking lever and executive component rotate in step.

By adopting the further arrangement, the mounting seat is indirectly connected with the unlocking rod, the connecting seat and the mounting seat slide synchronously and rotate, and after the connecting block is clamped into the connecting groove, the rotary executing piece can drive the unlocking rod to synchronously rotate to unlock, so that the unlocking device is simple in structure and convenient to operate.

Still further, the present utility model is provided with: the utility model discloses a movable frame, including the pedestal, thereby be equipped with on the pedestal and thereby remove the spacing opening that the frame was locked with the cooperation of removing, the inside wall of spacing opening both sides all is the inclined plane setting, be equipped with the setting element on the lateral wall of removing the frame, the outer peripheral face of setting element is the arc setting, all is equipped with the breach on each transfer code wheel, removes and is equipped with the lug on the frame, when the password is correct, removes the frame and breaks away from spacing opening under the effect of inclined plane, realizes the unblock of removing the frame in the lug card income corresponding breach, and when the password was wrong, remove the frame and can't slide, the setting element is located the circumference locking of realizing removing the frame all the time in the spacing opening.

Adopt above-mentioned still further setting, the password is right after, the breach corresponds with the lug, remove the frame and transversely slide on the mount pad under the effect of inclined plane, break away from spacing opening, the lug card is gone into in the breach, rotatory executive component this moment can drive the mount pad and slide and rotate in step, thereby drive unlocking lever rotation, realize the unblock, if password input is wrong, breach and lug dislocation, remove the frame and be unable to remove, the setting element is located spacing opening all the time, at this moment unable rotation executive component, can't realize the unblock, the setting on inclined plane is convenient for remove the frame card and go into or roll-off, thereby better realization removes the unblock or the locking of frame.

Still further, the present utility model is provided with: each transfer yard wheel is kept away from spacing open-ended one side and is equipped with the pressure lever that supports, supports the pressure lever and contradicts with adjacent transfer yard wheel and set up, is equipped with on the pressure lever that supports in the outside and supports the pressure portion position and be equipped with the through-hole that is convenient for outside thimble male on executive component and the pedestal, inwards drive support the pressure portion and can drive each transfer yard wheel and slide the change that the password wheel that breaks away from corresponding in the dabber realizes the password, the tip of dabber be equipped with the conflict boss that the setting element contradicted, first reset piece adopt reset spring setting, reset spring one end is contradicted on the transfer yard wheel terminal surface of innermost, thereby the other end is contradicted on the conflict boss and is reset transfer yard wheel or remove the frame.

By adopting the above arrangement, the password is convenient to replace, when the password is required to be replaced, the ejector pin is inserted into the through hole, and the pressing part is pressed, so that each password adjusting wheel moves and is separated from the password wheel, the password wheel can be rotated to modify the password, and the reset spring resets the password adjusting wheel after the password modification is completed.

Still further, the present utility model is provided with: the upper mounting cavity and the lower mounting cavity are communicated with each other, the mounting seat and the second resetting piece are arranged in the upper mounting cavity, one end of the second resetting piece is abutted to the bottom wall of the upper mounting cavity, the other end of the second resetting piece is abutted to the lower end face of the mounting seat, the mounting box is arranged in the lower mounting cavity, the upper end of the mounting box is opened to form a containing cavity, the rotating seat is arranged in the containing cavity, a limiting boss is arranged above the rotating seat on the containing cavity, and the connecting seat extends into the containing cavity and axially slides in the containing cavity and circumferentially rotates.

Adopt above-mentioned still further setting, can play the guide effect for stable in structure when the mount pad slides, and the second piece that resets during operation is also more stable, and better resets the mount pad, and lower installation cavity makes roating seat stable in structure, and the setting of spacing boss prevents that the roating seat from moving on the connecting seat, is driven by the connecting seat and takes place the displacement.

Still further, the present utility model is provided with: the seat body comprises an inner seat and an outer cover, a plurality of mounting holes are formed in the inner seat, screws are arranged in the mounting holes in a penetrating mode to fixedly arrange the inner seat on the door plate, and the outer cover is arranged outside the inner seat and is connected with the inner seat through the screws.

By adopting the above arrangement, the seat body has stable structure, the inner seat is arranged on the door plate through the screws, and each mounting hole is covered by the outer cover without exposure, so that the door is more attractive.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of the present utility model;

FIG. 3 is a schematic diagram of the internal structure of an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating the installation of a combination wheel assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of an inner seat according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a connector according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a rotary seat and an unlocking lever according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a combination wheel assembly according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a pressing rod according to an embodiment of the present utility model;

FIG. 10 is a schematic view of a mobile carriage according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a mobile frame and a code wheel according to an embodiment of the present utility model;

fig. 12 is a schematic view of a mounting box according to an embodiment of the present utility model.

Description of the embodiments

The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indications (such as up, down, front, and rear … …) in the description of the present utility model are merely for explaining the relative positional relationship, movement, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. In the description of the present utility model, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model.

As shown in fig. 1-12, a cipher door lock comprises an unlocking rod 1, a cipher wheel assembly 2, an executing piece 4, a mounting seat 8 connected with the executing piece 4 and a seat body 3, wherein the seat body 3 is fixedly arranged on a door plate, a shifting block 10 synchronously rotating with the unlocking rod 1 is arranged on the unlocking rod, the executing piece 4 can circumferentially rotate relative to the seat body 3, the mounting seat 8 is connected with the executing piece 4 through a screw, the executing piece can be synchronously moved with the mounting seat by being connected with the executing piece 4 through a buckle or the like, the cipher wheel assembly 2 is arranged on the mounting seat 8, the cipher wheel assembly 2 comprises a movable frame 21, a mandrel 22, a plurality of cipher wheels 23 rotatably sleeved on the mandrel 22 and a cipher wheel 24 for driving the cipher wheels 23 to rotate, part of the cipher wheels 24 is exposed outside the executing piece 4, a user can conveniently dial the cipher wheels 24 to input a cipher, an arrow mark is arranged on the executing piece 4, the direction indicated by the arrow is the sliding direction of the movable frame, the code adjusting wheel 23 can lock or unlock the movable frame 21, when the code is correct, the code adjusting wheel 23 unlocks the movable frame 21, the movable frame 21 transversely slides on the mounting seat 8 to unlock the movable frame 21 and the seat body 3, at the moment, the rotatable executing piece 4 can rotate, when the code is wrong, the code adjusting wheel 23 locks the movable frame 21, the movable frame 21 can not slide to lock the movable frame 21 and the seat body 3, at the moment, the executing piece 4 is locked circumferentially, the lock between the movable frame 21 and the seat body 3 can be a positioning piece arranged on the movable frame, an opening is arranged on the seat body, the positioning piece is positioned in the opening, because the seat body is fixed on the door, the movable frame can not rotate, only the positioning piece is separated from the opening, the movable frame can rotate, or the movable frame is provided with the opening, the positioning piece is arranged on the seat body, or other structures limit the rotation of the movable frame, the movable frame assembly 2 further comprises a first reset piece 25 for resetting the movable frame 21, the movable frame 21 is matched with the locking position of the base body 3 under the action of the first reset piece 25, the locking position is matched with the movable frame to indicate that when the password is correct, the movable frame can be separated from the base body, the base body cannot lock the movable frame, the executing piece and the mounting seat are rotatable, when the password is incorrect, the movable frame cannot be separated from the base body, the executing piece and the mounting seat cannot be rotated, the code wheel is driven to rotate through rotating the code wheel, after the password is input correctly, the movable frame 21 can transversely slide on the mounting seat 8 and separate from the base body 3, at the moment, the executing piece 4 can be driven to synchronously rotate, so that unlocking is realized, if the password is input incorrectly, the movable frame 21 cannot be locked with the base body 3, at the moment, the executing piece 4 cannot be rotated, unlocking is not realized, the structure is simple, and the layout is reasonable, when the whole door lock does not occupy space, the executing piece 4 cannot be rotated, the executing piece 23 cannot be rotated, the executing piece 4 is locked, the unlocking is better safety performance cannot be realized, and the unlocking is not realized.

The side of each code adjustment wheel 23 far away from the limit opening 32 is provided with a pressing rod 232, the pressing rod 232 is in pressing contact with the adjacent code adjustment wheel 23, the pressing rod 232 at the outermost side is provided with a pressing part 233, the outermost side refers to the side farthest from the limit opening 21, the executing piece 4 and the seat body 3 are provided with through holes 41 and 36 corresponding to the pressing part 233, which are convenient for the insertion of an external thimble, the pressing part 233 is driven inwards to drive each code wheel 23 to slide on the mandrel 22 and separate from the corresponding code wheel to realize the replacement of the code, each code wheel 23 can not only rotate circumferentially on the mandrel 22 but also slide axially on the mandrel 22 and slide along the length direction of the mandrel 22, the end of the mandrel 22 is provided with a supporting boss 221 which is supported by the positioning piece 211, the first restoring piece 25 is arranged by adopting a restoring spring, one end of the restoring spring is supported on the end face of the innermost code wheel 23, the other end is supported on the supporting boss 221 so as to restore the code wheel 23 or the movable frame 21, the supporting boss can increase the contact area between the mandrel 22 and the movable frame 21, the movable frame 21 can better drive the mandrel 22 to slide when sliding, so that the movable frame 21 can move more stably to drive the mandrel 22 to move, when the password is required to be replaced, the ejector pins are inserted into the through holes to press the pressing part 233, so that each code adjusting wheel 23 moves to separate from the code wheel 24, the code wheel 24 can be rotated to modify the codes at the moment, the code modification is completed, the reset spring resets the code adjusting wheel to reset the code wheel to the inner periphery of the code wheel, the code wheel is connected with the code wheel, a plurality of bulges are arranged on the inner side wall of the code wheel at intervals, a connecting groove is formed between the bulges, a connecting block is arranged on the outer side wall of the code wheel, and the connecting block is clamped in the connecting groove to realize synchronous rotation of the code wheel and the code wheel.

The executing piece 4 and the mounting seat 8 can slide axially relative to the seat body 3 and slide along the vertical direction of the seat body 3, as shown in fig. 3, the mounting seat 8 is arranged at intervals from the unlocking rod 1, the mounting seat 8 can be directly or indirectly connected with the unlocking rod 1 to realize circumferential rotation of the two under the driving of the executing piece, in this embodiment, the executing piece 4 and the mounting seat 8 can slide axially relative to the seat body 3, the mounting seat 8 is arranged at intervals from the unlocking rod 1, the driving piece of the executing piece 4 can be directly or indirectly connected with the unlocking rod 1 to realize circumferential rotation of the two, the second reset piece 33 of the reset mounting seat 8 is arranged on the seat body 3, the second reset piece 33 can adopt a spring, also can adopt an elastic piece, when the password is correct, the executing piece 4 is pressed down, so that the mounting seat is connected with the unlocking rod, at this moment, the executing piece is rotated, the second reset piece 33 resets the mounting seat 8 after the execution piece is loosened by driving the unlocking rod to rotate, meanwhile, the execution piece 4 is driven to reset because the mounting seat 8 is connected with the execution piece 4, in particular, the mounting seat 8 is indirectly connected with the unlocking rod 1, one end of the mounting seat 8 far away from the execution piece 4 is connected with the connecting seat 5, the connecting seat 5 is provided with a connecting block 51, one end of the unlocking rod 1 close to the mounting seat 8 is provided with a rotating seat 6 synchronously rotating with the unlocking rod, the unlocking rod 1 is in square arrangement, the rotating seat 6 is provided with a square hole, the unlocking rod 1 is inserted in the square hole to realize synchronous rotation of the unlocking rod 1 and the rotating seat 6, the square arrangement is convenient for the rotating seat 6 to simultaneously drive the unlocking rod 1 to rotate when rotating, the position of the rotating seat 6 corresponding to the connecting block 51 is provided with a connecting groove 61, and the mounting seat 8 slides downwards under the driving of the execution piece 4, the connecting block 51 is clamped into the connecting groove 61 to realize synchronous rotation of the unlocking rod 1 and the executing piece 4, the mounting seat 8 is indirectly connected with the unlocking rod 1, the connecting seat 5 and the mounting seat 8 slide and rotate synchronously, and after the connecting block 51 is clamped into the connecting groove 61, the rotating executing piece 4 can drive the unlocking rod 1 to rotate synchronously to realize unlocking, so that the unlocking device is simple in structure and convenient to operate.

In this embodiment, be equipped with on the pedestal 3 with thereby remove the spacing opening 32 that the frame 21 was locked to the realization circumference of removing, the inside wall of spacing opening 32 both sides all is the inclined plane setting, be equipped with setting element 211 on the lateral wall of removing the frame 21, setting element 211's outer peripheral face is the arc setting, all is equipped with breach 231 on each transfer wheel 23, remove and be equipped with lug 212 on the frame 21, when the password is correct, remove the frame 21 and break away from spacing opening 32 under the effect of inclined plane, realize the unblock of removing the frame 21 in the breach 231 that the lug 212 card is gone into to correspond, when the password is wrong, remove the frame 21 unable slip, setting element 211 is located the circumference of removing the frame 21 in spacing opening 32 all the time.

The upper mounting cavity 34 and the lower mounting cavity 35 which are communicated are arranged on the base body 3, the mounting seat 8 and the second resetting piece 33 are arranged in the upper mounting cavity 34, one end of the second resetting piece 33 is abutted against the bottom wall of the upper mounting cavity 34, the other end of the second resetting piece is abutted against the lower end face of the mounting seat 8, a guiding effect can be achieved, the structure is stable when the mounting seat 8 slides, the second resetting piece 33 is more stable when working, the mounting seat 8 is reset better, the mounting box 7 is arranged in the lower mounting cavity 35, the mounting box 7 comprises a bottom plate and a box seat which are arranged in a split mode, the bottom plate and the box seat are connected through screws, the mounting box is arranged on the base body 3, the upper end of the mounting box 7 is provided with a containing cavity 71, the rotating seat 6 is arranged in the containing cavity 71, a limiting boss 711 is arranged above the containing cavity 71, the connecting seat 5 extends into the containing cavity 71, and axially slides and circumferentially rotates in the containing cavity 71, the structure is stable, and the connecting boss 5 is prevented from being connected to the limiting boss 5 when the rotating seat 5 is driven to move, and the limiting boss is prevented from being displaced when the connecting seat 5 is connected. The seat body 3 includes interior seat 37 and dustcoat 38, be equipped with a plurality of mounting holes 371 on the interior seat 37, wear to be equipped with the screw in the mounting hole 371 and fix the setting on the door plant with interior seat 37, the dustcoat 38 cover is established outside interior seat 37, and is connected with interior seat 37 through the screw, and the seat body 3 stable in structure installs interior seat 37 on the door plant through the screw, and reuse dustcoat 38 covers each mounting hole 371, does not expose, and is more pleasing to the eye.

Claims (7)

1. The utility model provides a password lock, includes unlocking lever (1) and password wheel subassembly (2), its characterized in that still includes executive component (4), mount pad (8) and pedestal (3) that are connected with executive component (4), executive component (4) and mount pad (8) can rotate for pedestal (3) circumference, password wheel subassembly (2) set up on mount pad (8), password wheel subassembly (2) include movable frame (21), dabber (22), rotate a plurality of password wheels (23) of cover on dabber (22) and drive password wheel (24) that password wheel (23) rotated, password wheel (24) part expose outside executive component (4), password wheel (23) can realize locking or unlocking to movable frame (21), and when the password is correct, password wheel (23) are unlocked to movable frame (21), and movable frame (21) transversely slide on mount pad (8), realize movable frame (21) and pedestal (3) and can's (3) and can't realize locking cipher wheel (21) and movable frame (21) to the circumference when the password wheel (23) is locked when the executive component (4) is locked, the coded wheel assembly (2) further comprises a first reset piece (25) of the reset movable frame (21), and the movable frame (21) is in locking and positioning fit with the base body (3) under the action of the first reset piece (25).

2. The coded door lock according to claim 1, characterized in that the actuating member (4) and the mounting seat (8) can axially slide relative to the base body (3), the mounting seat (8) is arranged at a distance from the unlocking lever (1), the mounting seat (8) can be directly or indirectly connected with the unlocking lever (1) to realize circumferential rotation of the actuating member (4), the base body (3) is provided with a second resetting member (33) for resetting the mounting seat (8), and the mounting seat (8) and the unlocking lever (1) can be arranged at a distance.

3. The coded door lock according to claim 2, characterized in that one end of the mounting seat (8) far away from the executing piece (4) is connected with a connecting seat (5), a connecting block (51) is arranged on the connecting seat (5), a rotating seat (6) which synchronously rotates with the unlocking rod (1) is arranged at one end of the unlocking rod (1) close to the mounting seat (8), a connecting groove (61) is arranged at the position of the rotating seat (6) corresponding to the connecting block (51), and when the mounting seat (8) slides downwards under the driving of the executing piece (4), the connecting block (51) is clamped into the connecting groove (61) to synchronously rotate the unlocking rod (1) and the executing piece (4).

4. The coded door lock according to claim 1, 2 or 3, characterized in that the base body (3) is provided with a limit opening (32) which is matched with the movable frame (21) to realize circumferential locking of the movable frame (21), inner side walls on two sides of the limit opening (32) are all inclined planes, a positioning piece (211) is arranged on the side wall of the movable frame (21), each code adjusting wheel (23) is provided with a notch (231), the movable frame (21) is provided with a bump (212), when the code is correct, the movable frame (21) is separated from the limit opening (32) under the action of the inclined planes, the bump (212) is clamped into the corresponding notch (231) to realize unlocking of the movable frame (21), when the code is wrong, the movable frame (21) cannot slide, and the positioning piece (211) is always positioned in the limit opening (32) to realize circumferential locking of the movable frame (21).

5. The coded door lock according to claim 4, wherein one side of each code adjusting wheel (23) far away from the limiting opening (32) is provided with a pressing rod (232), the pressing rod (232) is in abutting arrangement with the adjacent code adjusting wheel (23), the outermost pressing rod (232) is provided with a pressing part (233), the position of the actuating part (4) and the seat body (3) corresponding to the pressing part (233) is provided with through holes (41, 36) convenient for the insertion of an external thimble, the pressing part (233) is driven inwards to drive each code adjusting wheel (23) to slide on the mandrel (22) to separate from the corresponding coded wheel to realize the replacement of the code, the end part of the mandrel (22) is provided with an abutting boss (221) abutting against the positioning part (211), the first resetting part (25) adopts a resetting spring, one end of the resetting spring abuts against the end face of the innermost code adjusting wheel (23), and the other end abuts against the abutting boss (221) so that the code adjusting wheel (23) or the movable frame (21) resets.

6. A combination door lock according to claim 3, characterized in that the base body (3) is provided with an upper mounting cavity (34) and a lower mounting cavity (35) which are communicated, the mounting seat (8) and the second reset piece (33) are both arranged in the upper mounting cavity (34), one end of the second reset piece (33) is abutted against the bottom wall of the upper mounting cavity (34), the other end is abutted against the lower end face of the mounting seat (8), the lower mounting cavity (35) is internally provided with a mounting box (7), the upper end of the mounting box (7) is provided with an opening to form a containing cavity (71), the rotating seat (6) is arranged in the containing cavity (71), a limit boss (711) is arranged above the rotating seat (6) on the containing cavity (71), and the connecting seat (5) extends into the containing cavity (71) and axially slides and circumferentially rotates in the containing cavity (71).

7. The combination door lock according to claim 6, wherein the base body (3) comprises an inner base (37) and an outer cover (38), a plurality of mounting holes (371) are formed in the inner base (37), screws are arranged in the mounting holes (371) in a penetrating mode to fixedly arrange the inner base (37) on the door plate, and the outer cover (38) is arranged outside the inner base (37) in a covering mode and connected with the inner base (37) through the screws.