A door lock with a cancellable password unlocking function

Abstract

The present invention belongs to the technical field of door locks, and particularly refers to a door lock with a function of canceling password unlocking. It includes an outer lock shell facing the outside and connected with an outer handle, and an inner lock shell facing the inside and connected with an inner handle. The outer handle and the inner handle can rotate synchronously. Inside the outer lock shell, there is a lock bar that can prevent the outer handle from rotating, and a tension spring connected to the lock bar. The tension spring makes the lock bar tend to move downward. The outer lock shell is also connected with a password dial wheel that can prevent the lock bar from moving downward. A square rod passing through the outer lock shell and the inner lock shell is connected between the outer handle and the inner handle. The square rod can rotate with the outer handle and the inner handle and can move back and forth relative to the outer handle and the inner handle. A lock block that can cooperate with the lock bar is fixed on the square rod. A locking groove facing the lock bar is formed on the lock block, and a locking convex body that can extend into the locking groove is formed at the upper end of the lock bar. Users can turn on and cancel the password unlocking function of this door lock according to their own needs, which provides more choices for users.

Description

Technical Field

[0001] The present invention belongs to the technical field of door locks and relates to a door lock with a function of canceling password unlocking. Technical Background

[0002] Password unlocking is a common function on modern door locks. This function enables users to turn the door handle to open the door lock only when the correct password is entered, which increases the security of the door lock, enables the door lock to better protect the user's house from intrusion, and further ensures the personal and property safety of the user.

[0003] However, when users repeatedly enter and exit the house in a short period of time, the password unlocking function will also cause certain troubles to users. Since the ordinary password door lock locks the door after the user closes the door, during the process of repeatedly entering and exiting the house, the user needs to enter the correct password every time to turn the door handle to open the door lock, which makes the user's door opening steps very cumbersome and wastes a lot of time for the user on unlocking. If the door is directly left open for the user to repeatedly enter and exit in a short period of time, although the unlocking step can be omitted and the user's time can be saved, when the user is not in the house, the open door will pose a hidden danger to the house, which is also not what the user wants to see.

[0004] In view of the above problems, a door lock that can cancel the password unlocking function at any time according to user needs can be designed, so that after the user cancels the password unlocking function of the door lock, the user can directly turn the door handle to open the door lock. Summary of the Invention

[0005] According to the above problems, the present invention provides a door lock with a function of canceling password unlocking. The user can freely cancel and restore the password unlocking function of the door lock, providing more choices for the user when using the door lock.

[0006] The purpose of the present invention is achieved as follows:

[0007] A door lock with a function of canceling password unlocking includes an outer lock shell facing the outside and connected with an outer door handle, and an inner lock shell facing the inside and connected with an inner door handle. The outer door handle and the inner door handle can rotate synchronously. A locking bar that can prevent the outer door handle from rotating and a tension spring connected to the locking bar are provided inside the outer lock shell. The tension spring makes the locking bar tend to move downward. A password dial wheel that can prevent the locking bar from moving downward is also connected to the outer lock shell. A square rod that penetrates the outer lock shell and the inner lock shell is connected between the outer door handle and the inner door handle. The square rod can rotate with the outer door handle and the inner door handle and can move back and forth relative to the outer door handle and the inner door handle. A lock block that can cooperate with the locking bar is fixed on the square rod. A locking groove facing the locking bar is formed on the lock block, and a locking convex body that can extend into the locking groove is formed at the upper end of the locking bar.

[0008] When the square rod moves to a position where the locking groove of the lock block is not aligned with the locking convex body, the locking bar cannot affect the rotation of the outer handle.

[0009] Furthermore, a first linkage through-hole is formed in the square rod, and a second linkage through-hole communicating with the first linkage through-hole is formed on the inner handle;

[0010] When the bolt passes through the second linkage through-hole and is inserted into the first linkage through-hole, moving the bolt back and forth causes the square rod to move back and forth with the bolt.

[0011] Furthermore, an outer driving member inserted into the outer handle and rotatable with the outer handle is provided in the outer lock case. An outer pushing block is formed on the outer driving member inside the outer lock case. Outer reset members are provided at both the upper and lower ends of the outer pushing block inside the outer lock case. An outer reset spring is connected inside the outer reset member, and the outer reset spring causes the outer reset members to tend to move away from each other. An inner driving member inserted into the inner handle and rotatable with the inner handle is provided in the inner lock case. An inner pushing block is formed on the inner driving member inside the inner lock case. Inner reset members are provided at both the upper and lower ends of the inner pushing block inside the inner lock case. An inner reset spring is connected inside the inner reset member, and the inner reset spring causes the inner reset members to tend to move closer to each other. The square rod is inserted into both the outer driving member and the inner driving member at the same time;

[0012] When the outer handle and the inner handle rotate, the outer driving member pushes the outer reset members to move away from each other through the outer pushing block, and the inner driving member pushes the inner reset members to move away from each other through the inner pushing block.

[0013] Furthermore, an outer retaining ring for pressing the outer reset member in the outer lock case is formed on the outer driving member, and an inner retaining plate for pressing the inner reset member in the inner lock case is formed on the inner driving member.

[0014] Furthermore, a mating through-hole for the lock block to enter is formed on the outer retaining ring, and a limiting groove that is in shape fit with the mating through-hole and for the lock block to be embedded is formed inside the outer reset member.

[0015] Furthermore, a rotating shaft that is inserted into the outer lock case and extends into the locking bar is formed on the password dial wheel. A lock ring that is located inside the locking bar and rotatable with the password dial wheel is sleeved on the rotating shaft. An unlocking groove is formed on the lock ring, and an unlocking convex body that abuts against the upper end of the lock ring is formed inside the locking bar;

[0016] When the lock ring rotates to a direction where the unlocking groove faces the unlocking convex body, the locking bar can move downward, causing the unlocking convex body to extend into the unlocking groove.

[0017] Furthermore, a bracket pressed by the lock bar is provided in the outer lock housing, a support sheet is formed on the bracket, a socket for the rotation shaft to pass through is defined between the support sheets, and an annular groove for the support sheet to be embedded is formed on the rotation shaft.

[0018] Furthermore, a baffle is formed on the bracket and abuts against the side end of the locking bar.

[0019] Furthermore, a toggle card extending out of the outer lock housing is formed on the bracket, and a toggle groove for the toggle card to extend into is formed on one end of the password dial wheel facing the outer lock housing.

[0020] Furthermore, a limiting through hole is formed in the lock bar, and a guide column inserted into the limiting through hole is formed in the outer lock shell, and the limiting through hole can move up and down relative to the guide column.

[0021] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0022] 1. The user can move the lock block by moving the square rod forward and backward. When the lock block is located at the upper end of the lock bar, the password unlocking function of the door lock is turned on. When the lock block is moved away from the upper end of the lock bar, the password unlocking function of the door lock is turned off. The user can freely turn on and off the password unlocking function of the door lock according to the situation, which better meets the needs of the user.

[0023] 2. The password door lock has a simple structure, which is not only convenient for users to operate, but also easy to produce and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0026] Figure 2 It is a three-dimensional schematic diagram of the exploded state of the present invention.

[0027] Figure 3 It is a three-dimensional schematic diagram of the outer lock housing.

[0028] Figure 4 It is a three-dimensional schematic diagram of the inner lock shell.

[0029] Figure 5 It is a schematic diagram of the internal structure of the outer lock shell.

[0030] Figure 6 Schematic perspective view of the locking bar.

[0031] Figure 7 Schematic perspective view of the square rod.

[0032] Figure 8 Schematic perspective view of the password dial.

[0033] Figure 9 Schematic perspective view of the bracket.

[0034] 1 - Outer handle, 11 - Outer lock housing, 111 - Guide post, 2 - Inner handle, 21 - Inner lock housing, 22 - Second linkage through hole, 3 - Locking bar, 31 - Tension spring, 32 - Locking convex body, 33 - Unlocking convex body, 34 - Limit through hole, 4 - Password dial, 41 - Rotating shaft, 411 - Ring groove, 42 - Locking ring, 421 - Unlocking groove, 43 - Dialing groove, 5 - Square rod, 51 - Locking block, 511 - Locking groove, 52 - First linkage through hole, 6 - Outer driving member, 61 - Outer pushing block, 62 - Outer retaining ring, 621 - Matching through hole, 7 - Outer reset member, 71 - Outer reset spring, 72 - Limit groove, 8 - Inner driving member, 81 - Inner pushing block, 82 - Inner baffle, 9 - Inner reset member, 91 - Inner reset spring, 10 - Bracket, 101 - Support piece, 102 - Socket, 103 - Baffle, 104 - Dialing clamping member. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0036] The present invention will be further described below with specific embodiments in conjunction with the accompanying drawings.

[0037] Such as Figures 1-7As shown in the figure, a door lock with a cancellable password unlocking function includes an outer lock case 11 facing the outside and connected to an outer door handle 1, and an inner lock case 21 facing the inside and connected to an inner door handle 2. The outer door handle 1 and the inner door handle 2 can rotate synchronously. Inside the outer lock case 11, there is a locking bar 3 that can prevent the outer door handle 1 from rotating, and a tension spring 31 connected to the locking bar 3. The tension spring 31 causes the locking bar 3 to have a tendency to move downward. The outer lock case 11 is also connected with a password dial 4 that can prevent the locking bar 3 from moving downward. A square rod 5 that penetrates the outer lock case 11 and the inner lock case 21 is connected between the outer door handle 1 and the inner door handle 2. The square rod 5 can rotate with the outer door handle 1 and the inner door handle 2 and can move back and forth relative to the outer door handle 1 and the inner door handle 2. A locking block 51 that can cooperate with the locking bar 3 is fixed on the square rod 5. A locking groove 511 facing the locking bar 3 is formed on the locking block 51. A locking protrusion 32 that can extend into the locking groove 511 is formed at the upper end of the locking bar 3. Specifically, the outer door handle 1 is installed on the outside of the door facing the outside through the outer lock case 11, and the inner door handle 2 is installed on the inside of the door facing the inside through the inner lock case 21. The outer door handle 1 and the inner door handle 2 are connected by a square rod 5 that penetrates the door, the outer lock case 11 and the inner lock case 21, so that the outer door handle 1 and the inner door handle 2 can rotate synchronously. When the square rod 5 penetrates the door, it is linked with a locking tongue that can expand and contract at the side end of the door. When the user rotates the outer door handle 1 or the inner door handle 2, the square rod 5 drives the locking tongue to retract into the door, thereby realizing the door opening action. When the user releases the outer door handle 1 and the inner door handle 2, the locking tongue pops out from the side end of the door again. In this door lock, when the password dial 4 is not rotated to the correct password position, and the user moves the square rod 5 until the locking block 51 is at the upper end of the locking bar 3, the password dial 4 will prevent the tension spring 31 from pulling the locking bar 3 downward. The locking protrusion 32 of the locking bar 3 extends into the locking groove 511 of the locking block 51, that is, the locking bar 3 locks the locking block 51, and the square rod 5 cannot rotate accordingly, so that the user cannot rotate the outer door handle 1 and the inner door handle 2. Only after the password dial 4 is rotated to the correct password position, the tension spring 31 can smoothly pull the locking bar 3 downward, so that the locking protrusion 32 of the locking bar 3 moves downward away from the locking groove 511 of the locking block 51, that is, when the square rod 5 drives the locking block 51 to rotate, it is blocked by the locking bar 3, and the user can freely rotate the outer door handle 1 or the inner door handle 2 to unlock. At this time, the password unlocking function of this door lock is turned on. When the user moves the square rod 5 so that the locking block 51 leaves the upper end of the locking bar 3, since the locking protrusion 32 of the locking bar 3 never extends into the locking groove 511 of the locking block 51, that is, when the square rod 5 drives the locking block 51 to rotate, it is never blocked by the locking bar 3, and the user can always freely rotate the outer door handle 1 or the inner door handle 2 to unlock. At this time, the password unlocking function of this door lock is turned off.

[0038] As Figure 2 and Figure 7 shown, a first linkage through-hole 52 is formed in the square rod 5, and a second linkage through-hole 22 communicating with the first linkage through-hole 52 is formed in the inner door handle 2. Specifically, when a user inserts a plug with a matching shape through the second linkage through-hole 22 of the inner door handle 2 and into the first linkage through-hole 52 of the square rod 5, the user only needs to pull the plug back and forth to drive the square rod 5 to translate back and forth within the door lock, so that the lock block 51 translates back and forth at the upper end of the lock bar 3, thereby realizing the control of the opening and closing of the password unlocking function of the door lock. This structure makes it more convenient for the user to control the opening and closing of the password unlocking function of the door lock, and the user can control the forward and backward movement of the square rod 5 without disassembling the door lock.

[0039] As Figures 2-4 shown, an outer driving member 6 that is inserted into the outer door handle 1 and can rotate with the outer door handle 1 is provided in the outer lock shell 11. An outer push block 61 is formed on the outer driving member 6 within the outer lock shell 11. Outer reset members 7 are provided at both the upper and lower ends of the outer push block 61 within the outer lock shell 11. An outer reset spring 71 is connected within the outer reset member 7. The outer reset spring 71 causes the outer reset members 7 to have a tendency to move away from each other. An inner driving member 8 that is inserted into the inner door handle 2 and can rotate with the inner door handle 2 is provided in the inner lock shell 21. An inner push block 81 is formed on the inner driving member 8 within the inner lock shell 21. Inner reset members 9 are provided at both the upper and lower ends of the inner push block 81 within the inner lock shell 21. An inner reset spring 91 is connected within the inner reset member 9. The inner reset spring 91 causes the inner reset members 9 to have a tendency to move closer to each other. The square rod 5 is inserted into both the outer driving member 6 and the inner driving member 8 at the same time. Specifically, when the user rotates the outer door handle 1, the outer driving member 6 rotates with the door handle 1 and pushes the outer reset members 7 to move away from each other through the outer push block 61. During the process of the outer reset members 7 moving away from each other, the outer reset spring 71 is compressed. After the user releases the outer door handle 1, since the outer reset spring 71 is no longer under the pressure from the outer reset members 7, the reset spring 71 starts to rebound and push the outer reset members 7 to move closer to each other. During the process of the outer reset members 7 moving closer to each other, the outer reset members 7 cause the outer driving member 6 to rotate back by pushing the outer push block 61, and finally cause the outer door handle 1 to rotate back and reset. Since the square rod 5 is inserted into both the outer driving member 6 and the inner driving member 8 at the same time, and enables the outer door handle 1 and the inner door handle 2 to rotate synchronously, when the user rotates the inner door handle 2 and releases the inner door handle 2, the movement process of the inner door handle 2 is the same as that of the outer door handle 1.

[0040] Further, an outer retaining ring 62 is formed on the outer driving member 6, which can press the outer reset member 7 tightly within the outer lock housing 11, and an inner retaining plate 82 is formed on the inner driving member 8, which can press the inner reset member 9 tightly within the inner lock housing 21. Specifically, the outer retaining ring 62 and the inner retaining plate 82 fix the outer reset member 7 and the inner reset member 9 within the outer lock housing 11, making the internal structure of the door lock more stable.

[0041] Further, a mating through hole 621 for the lock block 51 to enter is formed on the outer retaining ring 62, and a limiting groove 72 that matches the shape of the mating through hole 621 and into which the lock block 51 can be inserted is formed within the outer reset member 7. Specifically, the mating through hole 621 can prevent the outer retaining ring 62 from blocking the movement of the lock block 51, and the limiting groove 72 plays a role in limiting the movement of the lock block 51, preventing the user from pushing the square rod 5 into the outer driving member 6 excessively when moving it.

[0042] As Figures 5-8 shown, a rotating shaft 41 that inserts into the outer lock housing 11 and extends into the lock bar 3 is formed on the password dial 4. A lock ring 42 that is located within the lock bar 3 and can rotate with the password dial 4 is sleeved on the rotating shaft 41. An unlocking groove 421 is formed on the lock ring 42, and an unlocking convex body 33 that abuts against the upper end of the lock ring 42 is formed within the lock bar 3. Specifically, numbers are provided on the surface of the password dial 4, and scale lines are provided on the surface of the outer lock housing 11. When the number corresponding to the password on the surface of the password dial 4 aligns with the scale line on the surface of the outer lock housing 11, the correct password is input for this door lock. When the lock block 51 moves to the upper end of the lock bar 3 and the password unlocking function of this door lock is enabled, and the user has not rotated the password dial 4 to the correct password position, the unlocking groove 421 of the lock ring 42 does not align with the unlocking convex body 33 of the lock bar 3, and the unlocking convex body 33 abuts against the lock ring 42, making the pulling spring 31 unable to pull the lock bar 3 downward. The pulling spring 31 is stretched upward by the lock bar, and the locking convex body 32 of the lock bar 3 extends upward into the locking groove 511 of the lock block 51, locking this door lock, and the user cannot freely rotate the outer door handle 1 and the inner door handle 2. When the lock block 51 moves to the upper end of the lock bar 3 and the password start function of this door lock is enabled, and the user rotates the password dial 4 to the correct password position, the lock ring 42 rotates with the password dial 4 to the position where the unlocking groove 421 aligns with the lock bar 3. The unlocking convex body 33 of the lock bar 3 does not abut against the lock ring 42, and the pulling spring 31 no longer receives the pulling force from the lock bar 3 and starts to retract. During the retraction process, the pulling spring 31 pulls the lock bar 3 downward, causing the unlocking convex body 33 to extend into the unlocking groove 421. At this time, the user can freely rotate the outer door handle 1 and the inner door handle 2 to open this door lock.

[0043] Furthermore, when the password unlocking of the door lock is enabled, when the password dial 4 drives the lock ring 42 to rotate to the correct position and rotates the external handle 1 so that the unlocking protrusion 33 of the lock bar 3 extends downward into the unlocking groove 421 of the lock ring 42, the password dial 4 continues to be rotated forcefully. At this time, since the lock ring 42 is stuck by the unlocking protrusion 33, the password dial 4 will rotate independently relative to the lock ring 42, and the lock ring 42 will not rotate. At this time, when the user rotates the password dial 4 to the position where the number he wants is aligned with the scale line on the surface of the lock shell 11, the number is the unlocking password of the door lock set by the user.

[0044] like Figure 5 , Figure 8 and Figure 9 As shown, the outer lock housing 11 is provided with a bracket 10 pressed by the lock bar 3, and a support sheet 101 is formed on the bracket 10. A socket 102 for the rotation shaft 41 to pass through is defined between the support sheets 101, and a ring groove 411 for the support sheet 101 to be embedded is formed on the rotation shaft 41. Specifically, the lock bar 3 presses the bracket 10, and the bracket 10 is then embedded in the ring groove 411 through the support sheet 101 to clamp the rotation shaft 41, and finally the password dial 4 is fixed to prevent the password dial 4 from shaking randomly, so that the structure of the door lock is more stable.

[0045] Furthermore, a baffle 103 is formed on the bracket 10 to abut against the side end of the locking bar 3. Specifically, the baffle 103 abuts against the side end of the locking bar 3 to fix the bracket 10 and prevent the bracket 10 from sliding randomly.

[0046] Furthermore, a toggle card 104 extending out of the outer lock housing 11 is formed on the bracket 10, and a toggle slot 43 for the toggle card 104 to extend into is formed at one end of the password dial 4 facing the outer lock housing 11. Specifically, after the user rotates the password dial 4, when the password dial 4 rotates to a position where the toggle slot 43 is not aligned with the toggle card 104, the password dial presses the toggle card 104 back into the outer lock housing 11 toward the end surface of the outer lock housing 11, and when the password dial 4 rotates to a position where the toggle slot 43 is aligned with the toggle card 104, the toggle card 104 pops out from the outer lock housing 11 and extends into the toggle slot 43. The cooperation between the toggle card 104 and the toggle slot 43 allows the user to feel a sense of resistance when turning the password dial 4. The user can accurately turn the password dial 4 to any scale and the password dial 4 can accurately stay at the scale required by the user.

[0047] like Figure 5As shown, a limiting through hole 34 is formed in the lock bar 3, and a guide post 111 inserted into the limiting through hole 34 is formed in the outer lock shell 11. The limiting through hole 34 can move up and down relative to the guide post 111. Specifically, the cooperation between the guide post 111 and the limiting through hole 34 guides the up and down movement of the lock bar 3 and limits the moving distance of the lock bar 3, avoiding excessive movement of the lock bar 3 and further stabilizing the internal structure of the door lock.

[0048] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A door lock with a cancellable password unlocking function, comprising an outer lock case (11) facing the outside and connected with an outer handle (1), and an inner lock case (21) facing the inside and connected with an inner handle (2). The outer handle (1) and the inner handle (2) can rotate synchronously. A locking bar (3) that can prevent the outer handle (1) from rotating is provided in the outer lock case (11), and a tension spring (31) connected to the locking bar (3). The tension spring (31) makes the locking bar (3) tend to move downward. A password dial (4) that can prevent the locking bar (3) from moving downward is also connected to the outer lock case (11). Characterized in that, A square rod (5) passing through the outer lock case (11) and the inner lock case (21) is connected between the outer handle (1) and the inner handle (2). The square rod (5) can rotate with the outer handle (1) and the inner handle (2), and can move back and forth relative to the outer handle (1) and the inner handle (2). A lock block (51) that can cooperate with the locking bar (3) is fixed on the square rod (5). A locking groove (511) facing the locking bar (3) is formed on the lock block (51). A locking protrusion (32) that can extend into the locking groove (511) is formed at the upper end of the locking bar (3). When the square rod (5) moves to a position where the locking groove (511) of the lock block (51) is not aligned with the locking protrusion (32), the locking bar (3) cannot affect the rotation of the outer handle (1). A first linkage through hole (52) is formed in the square rod (5), and a second linkage through hole (22) communicating with the first linkage through hole (52) is formed on the inner handle (2). When a bolt passes through the second linkage through hole (22) and is inserted into the first linkage through hole (52), moving the bolt back and forth, the square rod (5) moves back and forth with the bolt. A rotating shaft (41) that inserts into the outer lock case (11) and extends into the locking bar (3) is formed on the password dial (4). A lock ring (42) located in the locking bar (3) and rotatable with the password dial (4) is sleeved on the rotating shaft (41). An unlocking groove (421) is formed on the lock ring (42), and an unlocking protrusion (33) abutting against the upper end of the lock ring (42) is formed in the locking bar (3). When the lock ring (42) rotates to a direction where the unlocking groove (421) faces the unlocking protrusion (33), the locking bar (3) can move downward, and the unlocking protrusion (33) extends into the unlocking groove (421).

2. The door lock with a cancellable password unlocking function according to claim 1, Characterized in that, The outer lock case (11) is provided with an outer driving member (6) inserted into the outer door handle (1) and rotatable with the outer door handle (1). An outer pushing block (61) is formed on the outer driving member (6) inside the outer lock case (11). Outer reset members (7) are provided at both the upper and lower ends of the outer pushing block (61) inside the outer lock case (11). An outer reset spring (71) is connected inside the outer reset member (7), and the outer reset spring (71) causes the outer reset members (7) to tend to move away from each other. The inner lock case (21) is provided with an inner driving member (8) inserted into the inner door handle (2) and rotatable with the inner door handle (2). An inner pushing block (81) is formed on the inner driving member (8) inside the inner lock case (21). Inner reset members (9) are provided at both the upper and lower ends of the inner pushing block (81) inside the inner lock case (21). An inner reset spring (91) is connected inside the inner reset member (9), and the inner reset spring (91) causes the inner reset members (9) to tend to move closer to each other. The square rod (5) is inserted into both the outer driving member (6) and the inner driving member (8) at the same time; When the outer door handle (1) and the inner door handle (2) rotate, the outer driving member (6) pushes the outer reset members (7) to move away from each other through the outer pushing block (61), and the inner driving member (8) pushes the inner reset members (9) to move away from each other through the inner pushing block (81).

3. The door lock with a password unlocking function cancellable according to claim 2, characterized in that an outer retaining ring (62) capable of pressing the outer reset member (7) inside the outer lock case (11) is formed on the outer driving member (6), and an inner retaining plate (82) capable of pressing the inner reset member (9) inside the inner lock case (21) is formed on the inner driving member (8).

4. The door lock with a password unlocking function cancellable according to claim 3, characterized in that a mating through hole (621) for the lock block (51) to enter is formed on the outer retaining ring (62), and a limiting groove (72) having a shape matching that of the mating through hole (621) and for the lock block (51) to be embedded is formed inside the outer reset member (7).

5. The door lock with a password unlocking function cancellable according to claim 1, characterized in that a bracket (10) pressed by the lock bar (3) is provided inside the outer lock case (11). A support piece (101) is formed on the bracket (10), and an insertion opening (102) for the rotating shaft (41) to pass through is defined between the support pieces (101). An annular groove (411) for the support piece (101) to be embedded is formed on the rotating shaft (41).

6. The door lock with a password unlocking function cancellable according to claim 5, characterized in that a baffle (103) abutted against the side end of the lock bar (3) is formed on the bracket (10).

7. The door lock with a password unlocking function cancellable according to claim 5, characterized in that A toggle card member (104) extending out of the outer lock housing (11) is formed on the bracket (10), and a toggle slot (43) into which the toggle card member (104) can extend is formed at one end of the password dial wheel (4) facing the outer lock housing (11).

8. The door lock with a cancellable password unlocking function according to claim 1, wherein, a limit through hole (34) is formed in the lock bar (3), a guide post (111) inserted into the limit through hole (34) is formed in the outer lock housing (11), and the limit through hole (34) can move up and down relative to the guide post (111).

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