CN215255281U

CN215255281U - Mechanical coded lock with password error-correction-preventing function

Info

Publication number: CN215255281U
Application number: CN202120428321.7U
Authority: CN
Inventors: 徐国强
Original assignee: Ningbo Thumb Locks Co ltd
Current assignee: Ningbo Thumb Locks Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-21
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to a mechanical coded lock with password error-proof function, which comprises a shell, wherein a mechanical lock component and a coded lock component are arranged in the shell, and the mechanical lock component comprises a lock core and a lock core shell which can be locked relatively; the mechanical lock and the coded lock are arranged in a coded mode through a code adjusting block; the method is characterized in that: the lock cylinder shell is provided with a locking groove and a code adjusting groove, the end part of the lock cylinder shell is provided with a limiting groove, and the limiting groove is connected with the locking groove and the code adjusting groove; a limiting block is arranged on the peripheral surface of the lock cylinder and slides in the limiting groove; when the password needs to be changed, the key is inserted, the lock cylinder shell is rotated after the lock cylinder is rotated, and the mechanical password lock is in a password modification state. The beneficial effects of the utility model reside in that: the key is required to be inserted to enable the lock core to rotate relative to the lock core shell, the decoding block can enter the decoding groove to modify the password, and the operation of changing the password by mistake in the unlocking state of the mechanical coded lock is avoided.

Description

Mechanical coded lock with password error-correction-preventing function

Technical Field

The utility model relates to a mechanical trick lock, in particular to need the key to insert the mechanical trick lock that just can modify the password.

Background

Coded locks are becoming more and more widely used due to their good security properties. The commonly used coded lock has two types, namely a mechanical coded lock and an electronic coded lock. The existing mechanical coded lock has the disadvantages of complex structure, high failure rate, very complicated coding operation and poor hand feeling of operation. The existing electronic coded lock mainly performs locking and unlocking operations through an electronic chip, is high in cost and easy to break down, can work only by being powered by a battery, and is troublesome in battery replacement.

Patent No. 201020237514.6 discloses a mechanical combination lock, which comprises a housing, a lock cylinder and a lock cylinder housing, wherein the lock cylinder is sleeved in the lock cylinder housing, one end of the lock cylinder is fixedly connected with a locking plate, and the other end is connected with a knob; a locking structure is arranged on the lock cylinder shell; the locking mechanism comprises a core rod, the core rod can move along the axis direction of the core rod and is pushed tightly to a locking groove on the surface of the lock cylinder shell by a first pushing spring, and a slope is arranged on the locking groove along the rotation direction of the lock cylinder shell; the tail end of the core rod can move axially and is connected with the shell in a manner of limiting circumferential rotation; a plurality of code wheels which mark the codes along the circumferential direction are rotatably sleeved on the core rod; the password wheel is positioned in the groove of the shell, and the top of the password wheel is exposed out of the shell; the surface of the core rod is provided with a convex point, and the contact between the password wheel and the core rod is not provided with a sliding groove allowing the corresponding convex point to slide in; the accurate password of each password wheel corresponds to the displayed number of the lock exposed at the top of the password wheel when the sliding groove is aligned with the salient point on the core rod.

The utility model discloses a mechanical trick lock simple structure that provides, easy and simple to handle soul, the good reliability.

However, this utility model provides a mechanical trick lock when revising the password, only needs to put the trick lock in the state of opening, rotates the lock core again, drives the lock core cover and rotates for transfer the yard groove rotatory to aim at with the plug, the plug with transfer the yard piece together to enter into and transfer the yard inslot, can revise the operation of password to the trick lock. By the structure, children can change the password by mistake in an unconscious state, and great inconvenience is brought to subsequent unlocking.

SUMMERY OF THE UTILITY MODEL

For overcoming the deficiencies existing in the prior art, the utility model provides a mechanical coded lock which has simple structure, is easy and flexible to operate and can prevent the password from being changed by mistake.

A mechanical coded lock with a code being prevented from being changed mistakenly comprises a shell, wherein a mechanical lock assembly and a coded lock assembly are arranged in the shell, and the mechanical lock assembly comprises a lock cylinder and a lock cylinder shell which can be locked relatively; the mechanical lock and the coded lock are arranged in a coded mode through a code adjusting block; the lock cylinder shell is provided with a locking groove and a code adjusting groove, the end part of the lock cylinder shell is provided with a limiting groove, and the limiting groove is connected with the locking groove and the code adjusting groove; a limiting block is arranged on the peripheral surface of the lock cylinder and slides in the limiting groove; when the password needs to be changed, the key is inserted, the lock cylinder shell is rotated after the lock cylinder is rotated, and the mechanical password lock is in a password modification state.

Furthermore, the coded lock comprises a plurality of coded wheels which are sleeved on the core rod and are marked with numbers along the circumferential direction, a positioning sleeve is arranged between each coded wheel and the core rod, and the coded wheels are connected with the positioning sleeves in a key groove manner; the positioning sleeve can be tightly pushed towards the direction of the lock cylinder shell by a second pushing spring so as to be separated from the password wheel; at the moment, the password wheel can rotate freely to modify the password.

Furthermore, the locating sleeve comprises an inner diameter and a front section matched with the core rod and a rear section with the inner diameter expanded, a sliding groove is formed in the peripheral surface of the front section, and a convex point matched with the sliding groove is formed in the core rod.

Furthermore, the tail end of the core rod is provided with an extension section with the inner diameter reduced, and a first pushing spring is sleeved on the extension section; the first pushing spring pushes the core rod tightly towards the direction of the lock cylinder shell.

Furthermore, the code adjusting block is positioned on the code wheel at the initial end and can be tightly pushed towards the direction of the lock cylinder shell by the positioning sleeve so as to be inserted into the code changing groove; the core rod is arranged through the adjusting block.

Furthermore, the password wheel is positioned in a wheel groove of the shell, and the circumferential surface of the password wheel is exposed out of the shell.

Furthermore, a spring retainer ring is sleeved on the core rod, and the second pushing spring always abuts against the last positioning sleeve through the spring retainer ring.

Furthermore, a mandrel positioning block is arranged in the shell, a through hole is formed in the mandrel positioning block, the extension section of the mandrel is inserted into the through hole, and the first pushing spring is located on the mandrel positioning block.

Furthermore, accommodating grooves corresponding to the password wheel are formed in the shell, a U-shaped elastic buckle is fixedly connected in each accommodating groove, arc-shaped convex parts are arranged on inner end faces of two side walls of each U-shaped elastic buckle, a step is arranged at one end of the password wheel, arc-shaped grooves are uniformly distributed on the circumference of the step, and each groove is aligned to one identification number; the U-shaped elastic buckle is meshed with the arc-shaped groove.

Furthermore, the front end of the core rod is provided with a limiting convex strip for preventing the code adjusting block from rotating in the circumferential direction, and the code adjusting block is provided with a limiting groove matched with the limiting convex strip.

The beneficial effects of the utility model reside in that: when the password is modified, a key is required to be inserted to enable the lock core to rotate relative to the lock core shell, the limiting block on the lock core is withdrawn from the decoding groove, the decoding block can enter the decoding groove to modify the password, and the operation of mistakenly modifying the password in the unlocking state of the mechanical password lock is avoided.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is a schematic structural diagram of the lock cylinder.

Fig. 3 is a schematic view of the installation structure of the lock cylinder housing and the lock cylinder.

Fig. 4 is a schematic structural diagram of the cipher wheel.

Fig. 5 is a schematic structural view of the positioning sleeve.

FIG. 6 is a cross-sectional view of the connection of the alignment sleeve and the mandrel.

The attached drawings are marked with: 1. a housing; 2. a lock cylinder; 3. a lock cylinder housing; 4. locking the blade; 5. a knob; 6. a core rod; 301. a locking groove; 302. a code adjusting groove; 7. a modulation block; 303. a limiting groove; 201. a limiting block; 7. a password wheel; 8. a positioning sleeve; 9. a second pushing spring; 801. meshing teeth; 701. an engagement groove; 802. a chute; 601. salient points; a. an extension section; 10. a first urging spring; 11. a spring collar; 12. a core rod positioning block; 13. a U-shaped elastic buckle; 702. a step; 703. an arc-shaped groove; 602. limiting convex strips.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.

A mechanical coded lock for preventing wrong password change comprises a shell 1, wherein a mechanical lock assembly and a coded lock assembly are arranged in the shell 1, and the mechanical lock assembly comprises a lock cylinder 2 and a lock cylinder shell 3 which can be locked relatively; the mechanical lock and the coded lock are arranged in a coded mode through a code adjusting block 7; a locking groove 301 and a code adjusting groove 302 are arranged on the lock cylinder shell 3, a limiting groove 303 is arranged at the end part of the lock cylinder shell 3, and the limiting groove 303 is connected with the locking groove 301 and the code adjusting groove 302; a limiting block 201 is arranged on the circumferential surface of the lock cylinder 2, and the limiting block 201 slides in the limiting groove 303; when the password needs to be changed, a key is inserted, the lock cylinder shell 3 is rotated after the lock cylinder 2 is rotated, and the mechanical password lock is in a password modification state.

The lock cylinder 2 is sleeved in the lock cylinder shell 3, and the lock cylinder 2 and the lock cylinder shell 3 are locked through the locking blade 4; the tail end of the lock core 2 is fixedly connected with a locking plate, and the starting end is connected with a knob 5 with a key hole.

When the mechanical coded lock is in a locking state, the limiting block 201 on the lock cylinder 2 is positioned at one end, close to the code adjusting groove 302, in the limiting groove 303, the lock cylinder 2 and the lock cylinder 2 shell are locked through the locking blade 4, and when the knob 5 is stirred, the lock cylinder 2 and the lock cylinder 2 shell rotate simultaneously; and no matter which position the shell of the lock cylinder 2 rotates to, the code adjusting block 7 cannot slide into the code adjusting groove 302. After a key is inserted, the lock cylinder 2 and the lock cylinder 2 shell are unlocked, the limiting block 201 on the lock cylinder 2 slides, and the code adjusting block 7 can only slide into the code adjusting groove 302.

Through the setting that adopts above-mentioned technical scheme, the utility model discloses the structure that adopts must use the key just can carry out the modification of password to the trick lock, prevents that the password from being changed by mistake.

The technical scheme is further set as follows: the coded lock comprises a plurality of coded wheels 7 which are sleeved on a core rod 6 and are marked with numbers along the circumferential direction, a positioning sleeve 8 is arranged between each coded wheel 7 and the core rod 6, and the coded wheels 7 are connected with the positioning sleeve 8 through key grooves; the positioning sleeve 8 can be tightly pushed towards the shell direction of the lock cylinder 2 by a second pushing spring 9 so as to be separated from the password wheel 7; the password wheel 7 can rotate freely to perform password modification.

The core rod 6 is arranged perpendicular to the axis direction of the lock cylinder shell 3, the core rod can move along the axis direction of the core rod, and the core rod can enter or exit the locking groove 301 and the code adjusting groove 302; the adjusting block 7 can be pushed to move along the axial direction of the core rod 6; the locking groove 301 and the code adjusting groove 302 are provided with slopes which facilitate the end of the core rod 6 to slide in or out along the rotation direction of the lock cylinder 2.

The circumference of the positioning sleeve 8 is provided with engaging teeth 801, the password wheel 7 is provided with engaging grooves 701 engaged with the engaging teeth 801, the engaging teeth 801 are located at the front end of the positioning sleeve 8, and the engaging grooves 701 are located on the inner wall of the steps 702 of the password wheel 7.

By adopting the technical scheme, the meshing teeth 801 and the meshing grooves 701 need to be separated, and the password wheel 7 can rotate relative to the positioning sleeve 8 to modify the password.

The technical scheme is further set as follows: the locating sleeve 8 comprises a front section with the inner diameter matched with the core rod 6 and a rear section with the inner diameter expanded, a sliding groove 802 is formed in the peripheral surface of the front section, and a convex point 601 matched with the sliding groove 802 is formed in the core rod 6.

When the sliding groove 802 of the positioning sleeve 8 is connected with the convex point 601 of the core rod 6, the positioning sleeve 8 cannot rotate circumferentially relative to the core rod 6.

The technical scheme is further set as follows: the tail end of the core rod 6 is provided with an extension section a with the inner diameter reduced, and a first pushing spring 10 is sleeved on the extension section a; the first pushing spring 10 pushes the core rod 6 tightly towards the shell direction of the lock core 2.

The technical scheme is further set as follows: the code adjusting block 7 is positioned on the code wheel 7 at the initial end and can be tightly pushed towards the lock cylinder shell 3 by the positioning sleeve 8 so as to be inserted into the code changing groove; the core rod 6 is disposed through the modulation block 7.

The technical scheme is further set as follows: the password wheel 7 is positioned in a wheel groove of the shell 1, and the circumferential surface of the password wheel 7 is exposed out of the shell 1.

The technical scheme is further set as follows: the core rod 6 is further sleeved with a spring retainer ring 11, and the second pushing spring 9 always abuts against the last positioning sleeve 8 through the spring retainer ring 11.

The technical scheme is further set as follows: a mandrel 6 positioning block is arranged in the shell 1, a through hole is formed in the mandrel 6 positioning block, the extension section a of the mandrel 6 is inserted into the through hole, and the first pushing spring 10 is located on the mandrel 6 positioning block.

The technical scheme is further set as follows: accommodating grooves corresponding to the password wheel 7 are formed in the shell 1, a U-shaped elastic buckle 13 is fixedly connected in each accommodating groove, arc-shaped convex parts are arranged on inner end faces of two side walls of each U-shaped elastic buckle 13, a step 702 is arranged at one end of the password wheel 7, arc-shaped grooves 703 are uniformly distributed on the circumference of the step 702, and each arc-shaped groove 703 is aligned to one identification number; the U-shaped elastic buckle 13 is engaged with the arc-shaped groove 703.

The technical scheme is further set as follows: the front end of the core rod 6 is provided with a limiting convex strip 602 for preventing the adjusting block 7 from rotating circumferentially, and the adjusting block 7 is provided with a limiting groove matched with the limiting convex strip 602.

The utility model discloses a theory of operation does: when the mechanical coded lock is in a locked state, the first pushing spring 10 and the second pushing spring 9 are both in a compressed state, and the positioning sleeve 8 and the core rod 6 are pushed forwards by the springs respectively.

When the mechanical coded lock is opened, the coded wheels 7 are shifted one by one, the identification number of the current coded wheel 7 is the same as the correct code sequence, at the moment, the sliding groove 802 of the positioning sleeve 8 is aligned with the corresponding convex point 601 on the core rod 6, at the moment, the knob 5 is shifted to drive the lock cylinder 2 to rotate, the lock cylinder sleeve 3 rotates along with the rotation, the core rod 6 is pushed, the core rod 6 slides out of the locking groove 301, meanwhile, the convex point 601 on the core rod 6 slides into the sliding groove 802 of the positioning sleeve 8, and the core rod 6 overcomes the action of the first pushing spring 10 to move axially. At this moment, the lock core 2 can rotate freely, and the coded lock is in an open state.

When the coded lock is locked, the knob 5 is shifted, the lock cylinder 2 sleeves are rotated, the core rod 6 enters the locking groove 301, at the moment, the convex points 601 on the core rod 6 slide out of the corresponding sliding grooves 802, then the code wheels 7 are shifted in disorder, the convex points 601 and the corresponding sliding grooves 802 are staggered, the convex points 601 are located at the rear end of the last positioning sleeve 8 and can freely rotate in the last positioning sleeve 8, at the moment, the core rod 6 cannot axially move and is always located in the locking groove 301 to prevent the lock cylinder sleeve 3 from rotating, and the lock cylinder 2 sleeves are limited through the locking blades 4, so that the lock cylinder 2 cannot freely rotate, and the mechanical coded lock is in a locking state.

When the password needs to be changed, namely, the password is adjusted, the password wheels 7 are shifted one by one, the identification number of the current password wheel 7 is the same as the correct password sequence, at this time, the sliding groove 802 of the positioning sleeve 8 is aligned with the corresponding convex point 601 on the core rod 6, the key is inserted into the lock core 2, the lock core 2 and the lock core sleeve 3 can rotate relatively, the lock core 2 is rotated, the limiting block 201 on the lock core 2 slides in the limiting groove 303 and drives the lock core sleeve 3 to rotate after sliding to one end of the locking groove 301, the inclined plane on the locking groove 301 pushes the core rod 6 to slide out the locking groove 301, meanwhile, the convex point 601 on the core rod 6 slides into the sliding groove 802 of the positioning sleeve 8, the core rod 6 moves along the axial direction under the action of the first pushing spring 10, the lock core sleeve 3 continues to rotate, until the decoding groove rotates to the upper part of the core rod 6, the core rod 6 is pushed into the decoding groove under the action of the first pushing spring 10, meanwhile, all the positioning sleeves 8 are pushed upwards under the action of the second pushing springs 9, so that the decoding blocks are pushed to be pushed into the decoding grooves; the locating sleeve 8 slides upwards and then is connected and separated with the key groove type between the password wheel 7 and the password wheel 7, meanwhile, the convex points 601 on the core rod 6 enter the sliding grooves 802 on the locating sleeve 8 and then prevent the locating sleeve 8 from rotating axially, the locating sleeve 8 does not rotate when the password wheel 7 is stirred, and a user can freely stir the password wheel 7 to adjust the password.

The utility model has the advantages that: when the password is modified, a key is required to be inserted to enable the lock core to rotate relative to the lock core shell, the limiting block on the lock core is withdrawn from the decoding groove, the decoding block can enter the decoding groove to modify the password, and the operation of mistakenly modifying the password in the unlocking state of the mechanical password lock is avoided.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments by utilizing the above disclosed technical contents without departing from the technical scope of the present invention, but all the modifications, changes and changes of the technical spirit of the present invention made to the above embodiments are also within the scope of the technical solution of the present invention.

Claims

1. A mechanical coded lock with a code being prevented from being changed mistakenly comprises a shell, wherein a mechanical lock assembly and a coded lock assembly are arranged in the shell, and the mechanical lock assembly comprises a lock cylinder and a lock cylinder shell which can be locked relatively; the mechanical lock and the coded lock are arranged in a coded mode through a code adjusting block; the method is characterized in that: the lock cylinder shell is provided with a locking groove and a code adjusting groove, the end part of the lock cylinder shell is provided with a limiting groove, and the limiting groove is connected with the locking groove and the code adjusting groove; a limiting block is arranged on the peripheral surface of the lock cylinder and slides in the limiting groove; when the password needs to be changed, the key is inserted, the lock cylinder shell is rotated after the lock cylinder is rotated, and the mechanical password lock is in a password modification state.

2. The mechanical combination lock of claim 1, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the coded lock comprises a plurality of coded wheels which are sleeved on the core rod and are marked with numbers along the circumferential direction, a positioning sleeve is arranged between each coded wheel and the core rod, and the coded wheels are connected with the positioning sleeves in a key groove mode; the positioning sleeve can be tightly pushed towards the direction of the lock cylinder shell by a second pushing spring so as to be separated from the password wheel; at the moment, the password wheel can rotate freely to modify the password.

3. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the locating sleeve comprises a front section with the inner diameter matched with the core rod and a rear section with the inner diameter expanded, a sliding groove is formed in the circumferential surface of the front section, and protruding points matched with the sliding groove are formed in the core rod.

4. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the tail end of the core rod is provided with an extension section with the inner diameter reduced, and a first pushing spring is sleeved on the extension section; the first pushing spring pushes the core rod tightly towards the direction of the lock cylinder shell.

5. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the code adjusting block is positioned on the code wheel at the initial end and can be tightly jacked towards the direction of the lock cylinder shell by the positioning sleeve so as to be inserted into the code changing groove; the core rod is arranged through the adjusting block.

6. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the password wheel is positioned in the wheel groove of the shell, and the circumferential surface of the password wheel is exposed out of the shell.

7. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: and the core rod is also sleeved with a spring retainer ring, and the second pushing spring always abuts against the last positioning sleeve through the spring retainer ring.

8. The mechanical combination lock of claim 4, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the outer shell is internally provided with a mandrel positioning block, a through hole is formed in the mandrel positioning block, the extension section of the mandrel is inserted into the through hole, and the first pushing spring is located on the mandrel positioning block.

9. The mechanical combination lock of claim 1, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: accommodating grooves corresponding to the password wheels are formed in the shell, a U-shaped elastic buckle is fixedly connected into each accommodating groove, arc-shaped convex parts are arranged on inner end faces of two side walls of each U-shaped elastic buckle, a step is arranged at one end of each password wheel, arc-shaped grooves are uniformly distributed on the circumference of each step, and each groove is aligned to one identification number; the U-shaped elastic buckle is meshed with the arc-shaped groove.

10. The mechanical combination lock of claim 2, wherein the combination is prevented from being mistakenly changed, and the mechanical combination lock comprises: the front end of the core rod is provided with a limiting convex strip for preventing the code adjusting block from rotating in the circumferential direction, and a limiting groove matched with the limiting convex strip is formed in the code adjusting block.