A mechanical password lock

Abstract

The present invention provides a mechanical password lock, which relates to the technical field of locks, including: a lock core and a shell, the lock core is arranged in the shell, the lock core includes a lock gate, at least two limit wheels and a number of password wheels equal to the limit wheels, a plurality of limit platforms are arranged on the end surface of the lock gate facing the limit wheel, a notch is arranged on the limit wheel for the limit platforms to enter and realize unlocking, the limit wheel is arranged at one end of the password wheel, and the limit wheel and the password wheel are relatively fixedly arranged along the circumferential direction, and a dial wheel is integrally formed at the other end of the password wheel, the dial wheel, the password wheel and the limit wheel are all coaxially arranged, and part of the dial wheel extends out of the shell, and turning the dial wheel can drive the password wheel and the limit wheel to rotate. The mechanical password lock provided by the present invention abandons the key structure in the traditional technology, directly turns the dial wheel, and the dial wheel is integrally formed with the password wheel, and there is no excessive transmission mechanism between the two, thereby avoiding damage to parts such as springs and keys, improving the stability of the structure and reducing the manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, in particular to a mechanical password lock. Background Art

[0002] At present, combination locks have become the mainstream of locks and are deeply loved by the majority of users. The principle of the most common mechanical combination lock core is to set a lock gate and multiple limit wheels, a limit platform is set on the lock gate, and a notch is set on the edge of the limit wheel. The notch is used for the limit platform to pass through. When the notches on each limit wheel are rotated to correspond to the limit platform, the lock gate can move backward, and the lock can be unlocked at this time. Otherwise, the lock will not be opened. The above-mentioned mechanical combination lock mainly has a defect of insufficient stability. Since the existing products are provided with buttons on the front panel, the buttons are in contact with the transmission teeth through a transmission structure or other structures. The above-mentioned structural parts are relatively large. When entering the password, the button needs to be pressed repeatedly, which can easily lead to failure of the transmission structure or the password cannot be adjusted after the transmission teeth are worn, resulting in failure of the entire mechanism. Summary of the invention

[0003] The purpose of the present invention is to provide a mechanical combination lock to solve the problems existing in the above-mentioned prior art, improve stability and reduce manufacturing costs.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a mechanical password lock, comprising: a lock core and a shell, the lock core is arranged in the shell, the lock core comprises a lock gate, at least two limit wheels and a number of password wheels equal to the limit wheels, one limit wheel corresponds to one password wheel, a plurality of limit platforms are arranged on the end surface of the lock gate facing the limit wheel, the limit wheel is provided with a notch for the limit platform to enter and unlock, the limit wheel is arranged at one end of the password wheel, and the limit wheel and the password wheel are relatively fixedly arranged in the circumferential direction, a dial wheel is integrally formed at the other end of the password wheel, the dial wheel, the password wheel and the limit wheel are all coaxially arranged, a part of the dial wheel extends out of the shell, and turning the dial wheel can drive the password wheel and the limit wheel to rotate.

[0006] Preferably, the dial wheel comprises a circular ring disk and a plurality of protrusions evenly arranged on the outer edge of the circular ring disk, and the circular ring disk is coaxially arranged with the code wheel and the limit wheel.

[0007] Preferably, the protrusion is pointed.

[0008] Preferably, it also includes a number of spring sheets equal to that of the dial wheel, wherein the spring sheets are fixedly arranged in the shell, one spring sheet corresponds to one dial wheel, the spring sheet is pressed against the dial wheel, the spring sheet applies an elastic force to the protrusion, and the number of the protrusions on the annular disk is the same as the number of digits on the password wheel.

[0009] Preferably, any one of the limit platforms in the locked state is located on a side of the limit wheel arranged opposite to the limit platform, and a plurality of first grooves are arranged on a side surface of the limit wheel facing the limit platform arranged opposite to the limit wheel along the circumference of the limit wheel, and the cross-section of each of the first grooves is consistent with the cross-section of the notch, and the edge of the notch located on the side of the limit wheel facing the limit platform and the edge of the first groove located on the side of the limit wheel facing the limit platform are on the same plane, and each of the first grooves on any one of the limit wheels can correspond to the limit platform corresponding to the limit wheel.

[0010] Preferably, the shell includes a front panel, the dial wheel passes through the front panel and extends out of the shell, the limiting wheel is located between the locking gate and the front panel, and a plurality of baffle groups extending toward the locking gate are fixedly arranged on the inner wall of the front panel, one baffle group corresponds to one limiting wheel, and one baffle group includes at least a rear baffle and a side baffle, the rear baffle is located on the side of the limiting wheel away from the limiting platform, and the side baffle is located on the radial side of the limiting wheel, and the side baffle and the rear baffle are both matched with the limiting wheel clearance.

[0011] Preferably, the plurality of baffle groups are divided into a first baffle group and a second baffle group, the first baffle group includes two side baffles and two rear baffles, the two side baffles are respectively arranged on both sides of the radial direction of the limiting wheel, one rear baffle corresponds to one side baffle, and the corresponding side baffle is connected to the rear baffle as a whole and presents a right-angle bent plate shape;

[0012] The second baffle plate group includes one side baffle plate and two rear baffle plates, one side baffle plate corresponds to one of the rear baffle plates and is connected as a whole, and the side edge of the other rear baffle plate extends to the side wall of the shell.

[0013] Preferably, it also includes an anti-drill plate, and the lock core also includes an unlocking wheel, which is rotatably arranged in the shell, and the unlocking wheel is located at one end of the locking gate, and a locking protrusion is arranged at the end of the locking gate facing the unlocking wheel, and a locking groove matching the locking protrusion is arranged on the side of the unlocking wheel, and part or all of the locking protrusion can extend into the locking groove and limit the rotation of the unlocking wheel, and when the locking gate moves in a direction away from the unlocking wheel and the locking protrusion moves out of the locking groove, the unlocking wheel can rotate and unlock; the anti-drill plate is arranged between the unlocking wheel and the front panel, and the anti-drill plate can at least cover the unlocking wheel and the locking protrusion in the locked state; the two sides of the anti-drill plate used to cover the locking protrusion are bent toward the locking gate.

[0014] Preferably, it further comprises an unlocking knob, the unlocking wheel comprises a top wheel and a bottom wheel, the top wheel and the bottom wheel are sequentially rotatably arranged in the housing around a first axis in a direction away from the front panel, the first axis is perpendicular to the front panel, the unlocking knob is fixedly connected to the top wheel, and rotating the unlocking knob can drive the top wheel to rotate around the first axis;

[0015] An elastic transmission button is provided on the side of the bottom rotating wheel facing the top rotating wheel, and a second groove matching with the elastic transmission button is provided on the side of the top rotating wheel facing the bottom rotating wheel, and one end of the elastic transmission button away from the bottom rotating wheel extends into the second groove. In an unlocked state, when the top rotating wheel rotates, the elastic transmission button drives the bottom rotating wheel to rotate together to achieve unlocking. In a locked state, when the top rotating wheel rotates, it can overcome the elastic force of the elastic transmission button to achieve idling.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The mechanical combination lock provided by the present invention abandons the key structure in the traditional technology, directly dials the dial wheel, and the dial wheel is integrally formed with the combination wheel without excessive transmission mechanisms between the two, thereby avoiding damage to parts such as springs and keys, improving the stability of the structure and reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 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.

[0019] Figure 1 A schematic diagram of the structure of the mechanical password lock provided by the present invention;

[0020] Figure 2 for Figure 1 A top view of

[0021] Figure 3 for Figure 2 EE section view;

[0022] Figure 4 A schematic diagram of the structure of a portion of the lock core in the mechanical password lock provided by the present invention;

[0023] Figure 5 A schematic diagram of the structure of a lock core in a mechanical password lock provided by the present invention;

[0024] Figure 6 An exploded view of the password wheel, the dial wheel and the limit wheel in the mechanical password lock provided by the present invention;

[0025] Figure 7 A schematic diagram of the structure of the limit wheel, baffles and front panel in the mechanical combination lock provided by the present invention;

[0026] Figure 8 A schematic diagram of the structure of each baffle and front panel in the mechanical combination lock provided by the present invention;

[0027] In the figure: 1-housing, 2-dial wheel, 3-unlocking knob, 4-spring, 5-code wheel, 6-limit wheel, 7-fixed shaft, 8-lock gate, 9-limit platform, 10-side baffle, 11-rear baffle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a mechanical password lock to solve the problems existing in the prior art, improve the stability of the structure and reduce the manufacturing cost.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] The present invention provides a mechanical password lock, such as Figures 1 to 8As shown, it includes: a lock core and a housing 1, the lock core is arranged in the housing 1, the lock core includes a lock gate 8, at least two limit wheels 6 and a number of code wheels 5 equal to the limit wheels 6, the housing 1 is opaque, and the housing 1 plays a role in protecting the lock core and shielding the limit wheels 6, one limit wheel 6 corresponds to one code wheel 5, a plurality of limit platforms 9 are arranged on the end surface of the lock gate 8 facing the limit wheel 6, and a notch is arranged on the limit wheel 6 for the limit platform 9 to enter and realize unlocking, and the limit wheel 6 is arranged at one end of the code wheel 5, and The limit wheel 6 and the code wheel 5 are relatively fixedly arranged along the circumferential direction, and a dial wheel 2 is integrally formed at the other end of the code wheel 5. The dial wheel 2, the code wheel 5 and the limit wheel 6 are coaxially arranged, and the dial wheel 2, the code wheel 5 and the limit wheel 6 are all sleeved on a fixed shaft 7 and can rotate relative to the fixed shaft 7. Part of the dial wheel 2 extends out of the shell 1, and the part of the dial wheel 2 exposed outside the shell 1 is for the user to directly dial to unlock. Turning the dial wheel 2 can drive the code wheel 5 and the limit wheel 6 to rotate, thereby achieving unlocking.

[0032] The mechanical combination lock provided by the present invention abandons the key structure in the traditional technology, and directly dials the dial wheel 2, which is integrally formed with the combination wheel 5 without excessive transmission mechanisms, thereby avoiding damage to parts such as springs and keys, improving the stability of the structure and reducing manufacturing costs.

[0033] Furthermore, the dial wheel 2 and the code wheel 5 are integrally formed of metal material, and have a stable structure.

[0034] Furthermore, the dial wheel 2 includes a circular ring disk and a plurality of protrusions evenly arranged on the outer edge of the circular ring disk. The circular ring disk is coaxially arranged with the code wheel 5 and the limit wheel 6. The protrusions are pointed, which is convenient for the user to dial the dial wheel 2.

[0035] Furthermore, the mechanical combination lock provided by the present invention also includes an equal number of spring pieces 4 as the dial wheel 2, the spring pieces 4 are fixedly arranged in the shell 1, one spring piece 4 corresponds to one dial wheel 2, the spring piece 4 is pressed against the dial wheel 2, the spring piece 4 applies an elastic force to the protrusion, the spring piece 4 cooperates with the pointed protrusion on the dial wheel 2 to realize the gear sense when dialing, specifically, as shown in the figure, a plurality of spring pieces 4 can be integrated into a total spring piece, the total spring piece is fixedly arranged on the inner side wall of the shell 1, and the total spring piece can apply an elastic force toward the inside of the shell 1 to each dial wheel 2, the number of protrusions on a circular ring disk is the same as the number of numbers on the code wheel 5, the position of the protrusion matches the position of the number on the code wheel 5, so that each time a gear sense is generated, the code wheel 5 rotates one number, there are ten numbers on the sealing wheel, and there are also ten protrusions.

[0036] Furthermore, a plurality of limit platforms 9 are arranged in a matrix, and a plurality of limit wheels 6 are also arranged in a matrix, one limit platform 9 corresponds to one limit wheel 6, and any limit platform 9 in a locked state is located on a side of the limit wheel 6 arranged opposite to the limit platform 9, and a plurality of first grooves are arranged along the circumference of the limit wheel 6 on a side surface of the limit wheel 6 facing the limit platform 9 arranged opposite to the limit wheel 6, and the cross section of each first groove is consistent with the cross section of the notch, and the edge of the notch on the side of the limit wheel 6 facing the limit platform 9 is consistent with the edge of the first groove on the side of the limit wheel 6 facing the limit platform 9 The edges on the side surfaces are on the same plane, and each first groove on any limiting wheel 6 can correspond to the limiting platform 9 corresponding to the limiting wheel 6. The portion of the limiting wheel 6 with the notch corresponds to the correct unlocking code on the combination wheel 5. Each first groove is opened at the wrong unlocking code. When the mechanical combination lock is technically opened, when it is rotated to the first groove, the first groove will also produce the same blocking feel as the notch, thereby confusing criminals and preventing them from distinguishing the true and false unlocking codes by sound or feel, increasing the difficulty of technical opening and enhancing the anti-theft performance.

[0037] Furthermore, the shell 1 includes a front panel, the dial wheel 2 extends out of the shell 1 through the front panel, the limit wheel 6 is located between the lock gate 8 and the front panel, and a plurality of baffle groups extending toward the lock gate 8 are fixedly arranged on the inner wall of the front panel, one baffle group corresponds to one limit wheel 6, and one baffle group includes at least one rear baffle 11 and a side baffle 10, the rear baffle 11 is located on the side of the limit wheel 6 away from the limit platform 9, and the side baffle 10 is located on the radial side of the limit wheel 6, and the side baffle 10 and the rear baffle 11 are both matched with the limit wheel 6 with a gap, and the gap value can be 1mm~5mm. The function of setting the baffle is to prevent criminals from forcibly unlocking the lock. When the criminals enter an incorrect password, the mechanical password lock is in a locked state. At this time, forcibly twisting the unlocking knob 3 will cause the lock gate 8 to shake left and right or move backward. In severe cases, it will cause the lock gate 8 to fail. Therefore, setting a baffle integrated with the shell 1 can prevent the lock gate 8 from shaking left and right and moving backward, greatly improving the safety of the device.

[0038] Further, the plurality of baffle groups are divided into a first baffle group and a second baffle group, the first baffle group includes two side baffles 10 and two rear baffles 11, the two side baffles 10 are respectively arranged on both sides of the radial direction of the limiting wheel 6, one rear baffle 11 corresponds to one side baffle 10, and the corresponding side baffle 10 is connected to the rear baffle 11 as a whole and presents a right-angle bent plate shape;

[0039] The second baffle group includes a side baffle 10 and two rear baffles 11, one side baffle 10 corresponds to one of the rear baffles 11 and is connected as a whole, and the side edge of the other rear baffle 11 extends to the side wall of the shell 1. As shown in the figure, a row of limiting wheels 6 close to the unlocking knob 3 is protected by the second baffle group, and the remaining limiting wheels 6 are protected by the first baffle group.

[0040] Furthermore, the mechanical combination lock provided by the present invention also includes an anti-drilling plate, and the lock core also includes an unlocking wheel. The unlocking wheel can be rotatably arranged in the shell 1, and the unlocking wheel is located at one end of the lock gate 8, and the lock gate 8 is provided with a locking protrusion at the end facing the unlocking wheel, and the side of the unlocking wheel is provided with a locking groove matching the locking protrusion, part or all of the locking protrusion can extend into the locking groove and limit the rotation of the unlocking wheel, when the lock gate 8 moves away from the locking wheel and the locking protrusion moves out of the locking groove, the unlocking wheel can rotate and unlock; the anti-drilling plate is arranged between the unlocking wheel and the front panel, and the anti-drilling plate can at least block the unlocking wheel and the locking protrusion in the locked state; the two sides of the anti-drilling plate used to block the locking protrusion are bent toward the lock gate 8, and one anti-drilling plate can achieve the function of front protection and side protection of the locking protrusion to prevent criminals from drilling out the locking protrusion from the side.

[0041] Furthermore, the mechanical combination lock provided by the present invention further includes an unlocking knob 3, the unlocking wheel includes a top wheel and a bottom wheel, the top wheel and the bottom wheel are sequentially rotatably arranged in the housing 1 around a first axis in a direction away from the front panel, the first axis is perpendicular to the front panel, the unlocking knob 3 is fixedly connected to the top wheel, and rotating the unlocking knob 3 can drive the top wheel to rotate around the first axis;

[0042] An elastic transmission button is provided on the side of the bottom rotating wheel facing the top rotating wheel, and a second groove matching the elastic transmission button is provided on the side of the top rotating wheel facing the bottom rotating wheel. The end of the elastic transmission button away from the bottom rotating wheel extends into the second groove. In the unlocked state, when the top rotating wheel rotates, the elastic transmission button drives the bottom rotating wheel to rotate together to achieve unlocking. In the locked state, when the top rotating wheel rotates, it can overcome the elastic force of the elastic transmission button to achieve idling. When the input password is incorrect, the lock gate 8 is in the locked state. At this time, if the unlocking knob 3 is rotated forcefully, the unlocking knob 3 will only drive the top rotating wheel to rotate, so as to prevent the unlocking wheel from being damaged or opened when being twisted vigorously.

[0043] Furthermore, a receiving groove extending away from the top rotating wheel is provided on the side of the bottom rotating wheel facing the top rotating wheel, the elastic transmission button is columnar, the elastic transmission button is arranged in the receiving groove and the top of the elastic transmission button extends out of the receiving groove and extends into the second groove, the bottom rotating wheel contacts the opposite end faces of the top rotating wheel, the elastic transmission button includes a spring and a sleeve, the sleeve is a hard sleeve, one end of the sleeve is open and the other end is closed, one end of the spring extends into the sleeve from the open end of the sleeve and rests on the bottom wall of the sleeve, the other end of the spring is exposed from the open end of the sleeve, the open end of the sleeve equipped with the spring extends into the receiving groove, and the closed end of the sleeve is exposed in the receiving groove and extends into the second groove, the edge of the outer wall of the closed end of the sleeve is chamfered, the second groove is a truncated cone-shaped groove, and the cross-sectional area of ​​the second groove gradually decreases in the direction away from the bottom rotating wheel, so as to achieve the purpose that rotating the unlocking knob 3 with force in the locked state will only cause the top rotating wheel to rotate idly.

[0044] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A mechanical password lock, characterized in that: include: A lock core and a housing, wherein the lock core is arranged in the housing, the lock core comprises a lock gate, at least two limit wheels and a password wheel of the same number as the limit wheels, one limit wheel corresponds to one password wheel, a plurality of limit platforms are arranged on the end surface of the lock gate facing the limit wheel, a notch is arranged on the limit wheel for the limit platform to enter and unlock, the limit wheel is arranged at one end of the password wheel, and the limit wheel and the password wheel are relatively fixedly arranged along the circumferential direction, and the other end of the password wheel is integrally formed. There is a dial wheel, the dial wheel, the password wheel and the limit wheel are all coaxially arranged, part of the dial wheel extends out of the shell, and turning the dial wheel can drive the password wheel and the limit wheel to rotate; the dial wheel includes a circular ring disk and a plurality of protrusions evenly arranged on the outer edge of the circular ring disk, and the circular ring disk is coaxially arranged with the password wheel and the limit wheel; any one of the limit platforms in the locked state is located on a side of the limit wheel opposite to the limit platform, and the limit wheel faces the limit wheel opposite to the limit wheel 14. The lock assembly of claim 13 wherein the plurality of first and second locking plates are respectively provided on a side surface of the lock assembly and a side surface of the lock assembly. The plurality of first and second locking plates are respectively provided on a side surface of the lock assembly and a side surface of the lock assembly.

2. The mechanical combination lock according to claim 1, characterized in that: The protrusion is in a pointed shape.

3. The mechanical combination lock according to claim 2, characterized in that: It also includes a number of spring sheets equal to the number of the dial wheels, the spring sheets are fixedly arranged in the shell, one spring sheet corresponds to one dial wheel, the spring sheet is pressed against the dial wheel, the spring sheet applies an elastic force to the protrusions, and the number of the protrusions on the annular disk is the same as the number of digits on the password wheel.

4. The mechanical combination lock according to claim 1, characterized in that: The plurality of baffle groups are divided into a first baffle group and a second baffle group, the first baffle group includes two side baffles and two rear baffles, the two side baffles are respectively arranged on both sides of the radial direction of the limiting wheel, one rear baffle corresponds to one side baffle, the corresponding side baffle is connected to the rear baffle as a whole, and is in the shape of a right-angle bent plate; The second baffle plate group includes one side baffle plate and two rear baffle plates, one side baffle plate corresponds to one of the rear baffle plates and is connected as a whole, and the side edge of the other rear baffle plate extends to the side wall of the shell.

5. The mechanical combination lock according to claim 1, characterized in that: The lock core further comprises an unlocking wheel, wherein the unlocking wheel is rotatably arranged in the housing, and the unlocking wheel is located at one end of the locking gate, a locking protrusion is arranged at one end of the locking gate facing the unlocking wheel, a locking groove matching with the locking protrusion is arranged on the side of the unlocking wheel, part or all of the locking protrusion can extend into the locking groove and limit the rotation of the unlocking wheel, and when the locking gate moves in a direction away from the unlocking wheel and the locking protrusion moves out of the locking groove, the unlocking wheel can rotate and unlock; the anti-drilling plate is arranged between the unlocking wheel and the front panel, and the anti-drilling plate can at least cover the unlocking wheel and the locking protrusion in the locked state; the two sides of the anti-drilling plate used to cover the locking protrusion are bent toward the locking gate.

6. The mechanical combination lock according to claim 5, characterized in that: It also includes an unlocking knob, the unlocking wheel includes a top wheel and a bottom wheel, the top wheel and the bottom wheel are sequentially rotatably arranged in the housing in a direction away from the front panel around a first axis, the first axis is perpendicular to the front panel, the unlocking knob is fixedly connected to the top wheel, and rotating the unlocking knob can drive the top wheel to rotate around the first axis; An elastic transmission button is provided on the side of the bottom rotating wheel facing the top rotating wheel, and a second groove matching with the elastic transmission button is provided on the side of the top rotating wheel facing the bottom rotating wheel, and one end of the elastic transmission button away from the bottom rotating wheel extends into the second groove. In an unlocked state, when the top rotating wheel rotates, the elastic transmission button drives the bottom rotating wheel to rotate together to achieve unlocking. In a locked state, when the top rotating wheel rotates, it can overcome the elastic force of the elastic transmission button to achieve idling.

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