Mechanical coded door lock

Abstract

The application discloses a mechanical password door lock, a shell is arranged on a bottom plate, a plurality of tracks are arranged on the top side of the bottom plate, a lock body is movably arranged on the tracks, a guide rail piece is arranged on each track, the end of each guide rail piece is connected with one end of the lock body, the lock body is driven to move, the other end of the lock body is provided with a lock cylinder, the end of the lock cylinder is inserted into a lock catch box when the lock is in a locked state, a first through groove is arranged on the upper and lower sides of each guide rail piece, a horizontal push rod is arranged in the first through groove, a slanted supporting plate is arranged on the top end side of the horizontal push rod, a button is fixed on the shell through a button seat, the bottom end of the button is provided with a C-shaped hook plate, when each button is pressed downward according to a preset sequence and a preset depth, the slanted supporting plate exerts a horizontal directional component force on the horizontal push rod under the action of pressure, so that the horizontal push rod drives the guide rail piece to move away from the lock catch box, the lock cylinder is separated from the lock catch box, and the lock is opened.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of door lock, in particular to a mechanical password door lock. BACKGROUND

[0002] As a protective tool for protecting the safety of the family and property of citizens, the door lock also plays an important role in maintaining privacy. With the improvement of people's material living standards, residents' requirements for door locks have not been limited to security, and new demands for convenience have been put forward.

[0003] At present, fingerprint locks and password locks are increasingly appearing on household security doors, solving the annoyance of forgetting to bring keys and providing more convenience for entering and leaving home. However, electronic locks such as fingerprint locks and password locks are generally expensive and still need to replace batteries frequently, and they do not have the advantages of mechanical door locks in terms of later maintenance and reliability. SUMMARY

[0004] The purpose of the present application is to overcome the problems of the prior art, and a mechanical password door lock is disclosed, which realizes the opening and closing of the door lock through a pure mechanical structure. The mechanical button used can provide hundreds of password combinations, ensuring security while providing convenience and reliability.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A mechanical password door lock, the mechanical password door lock comprising: a shell, a button, a button seat, a horizontal push rod, a lock body spring, a lock catch box, a bottom plate, a track, a guide rail piece, a lock body, a lock core;

[0007] The bottom plate is fixed on the door panel, the shell is arranged on the bottom plate, and the top side of the bottom plate is provided with a plurality of tracks;

[0008] The lock body is movably fixed on the track, and each track is provided with a guide rail piece, the end of each guide rail piece is connected and fixed with one end of the lock body for driving the lock body to move, and the other end of the lock body is provided with a lock core, the lock core protrudes out of the shell, and the end of the lock core is inserted into the lock catch box when in the locked state;

[0009] And the upper and lower sides of each guide rail piece are provided with a first through groove, the first through groove is provided with a horizontal push rod, and the horizontal push rod can move horizontally and vertically in the first through groove;

[0010] The horizontal push rod body top end side of the horizontal push rod is provided with an inclined support plate, and the inclined support plate is arranged obliquely in the direction of the end face of the horizontal push rod body;

[0011] The button is fixed on the shell through the button seat, the bottom end of the button is provided with a C-shaped hook plate,

[0012] When each button is pressed down in a preset order and a preset depth, the bottom end of the C-shaped hook plate contacts the top surface of the inclined support plate and exerts a vertical downward pressure on the inclined support plate. The inclined support plate exerts a horizontal force on the horizontal push rod under the pressure, so that the horizontal push rod drives the guide rail piece to move away from the lock box, thereby separating the lock cylinder from the lock box and completing the unlocking.

[0013] According to a preferred embodiment, each button corresponds to a guide rail piece and is used to drive the corresponding guide rail piece. Each guide rail piece gradually pulls the lock body, so that all the buttons work together to separate the lock cylinder from the lock box and complete the unlocking.

[0014] According to a preferred embodiment, a lock body spring is further sleeved on the outside of the lock cylinder. One end of the lock body spring is connected to the lock body, and the other end is connected to the side wall of the shell. The lock body spring provides a pulling force for the lock body to extend the lock cylinder out of the shell.

[0015] According to a preferred embodiment, the height of the C-shaped notch of the C-shaped hook plate in the vertical direction is similar to the height of the vertical projection of the inclined support plate. When each button is pressed to the bottom end, the inclined support plate on each guide rail piece can smoothly pass through the C-shaped notch of each C-shaped hook plate under the pulling force of the lock body spring, thereby completing the position recovery. At this time, the lock cylinder (13) is again inserted into the lock box.

[0016] According to a preferred embodiment, the angle between each inclined support plate and the horizontal direction is 30°-60°.

[0017] According to a preferred embodiment, the side wall of the button is provided with a plurality of limiting parts to limit the pressing process and measure the pressing depth of the button.

[0018] According to a preferred embodiment, the limiting part includes an embedded spring and a wedge-shaped block. The embedded spring is embedded in the side wall of the button body of the button, and the end of the embedded spring is connected to the wedge-shaped block. During the process of pressing the button into the shell, the wedge-shaped block compresses the embedded spring and enters the gap where the embedded spring is accommodated. When the button stops extending into the shell, the wedge-shaped block abuts against the shell, thereby completing the limiting of the reverse movement of the button.

[0019] According to a preferred embodiment, the ring body of the button seat is provided with a notch part, and the side wall of the button body of the button is provided with a vertical bolt. The bottom of the bolt on the button body is inserted into the notch part of the button seat.

[0020] When resetting the button, the bolt is pulled out first, and then the button body is rotated so that the limiting part can pass through the notch part of the button seat, thereby pulling out the button to achieve the resetting.

[0021] According to one preferred embodiment, the front and back sides of each guide rail piece are provided with a second through slot, and the position of the horizontal push rod in the first through slot is fixed by a bolt penetrating through the second through slot.

[0022] According to one preferred embodiment, a sliding wheel is arranged between the guide rail piece and the track, and a sliding wheel is arranged between the lock body and the track.

[0023] The aforementioned main scheme and each further selected scheme can be freely combined to form multiple schemes, which are all the schemes that can be adopted and claimed by the present application. Those skilled in the art can understand that there are multiple combinations according to the prior art and common knowledge after understanding the schemes of the present application, which are all the technical schemes claimed by the present application, and are not listed here.

[0024] Advantages of the present application:

[0025] The mechanical coded door lock of the present application realizes the opening and closing of the door lock through a pure mechanical structure, and the mechanical button adopted can also provide hundreds of password combinations, which ensures security, and provides convenience and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a schematic diagram of the implementation structure of the mechanical coded door lock of the present application;

[0027] Fig. 2 is a schematic diagram of the structure of the button of the present application;

[0028] Fig. 3 is a schematic diagram of the structure between the button and the horizontal push rod of the present application;

[0029] Among them, 1 is a shell, 2 is a button, 3 is a button seat, 4 is a horizontal push rod, 5 is a lock body spring, 6 is a lock catch box, 7 is a bottom plate, 8 is a track, 9 is a sliding wheel, 10 is a guide rail piece, 11 is a bolt, 12 is a lock body, 13 is a lock cylinder, 14 is a hook plate, 15 is an embedded spring, 16 is a wedge block, 17 is a bolt, 18 is a button body, 19 is an inclined support plate, and 20 is a horizontal push rod body. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0031] It should be noted that similar reference numerals and letters refer to like items in the accompanying drawings, and once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging", and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that, unless otherwise specifically specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the present application points out that in the present application, if the specific structures, connection relationships, positional relationships, power source relationships, etc. are not specifically written, the structures, connection relationships, positional relationships, power source relationships, etc. involved in the present application are all known by those skilled in the art on the basis of the prior art without creative labor.

[0036] Example 1

[0037] Reference Figs. 1 to 3 As shown in the drawings, the present application discloses a mechanical coded door lock, and the present embodiment is described by taking four coded buttons as an example. The mechanical coded door lock comprises a shell 1, a button 2, a button seat 3, a horizontal push rod 4, a lock body spring 5, a lock catch box 6, a bottom plate 7, a track 8, a sliding wheel 9, a guide rail piece 10, a bolt 11, a lock body 12 and a lock core 13.

[0038] The bottom plate 7 is fixed on the door panel, the outer shell 1 is fixed on the bottom plate 7 , and four rails 8 are fixed on the bottom plate 7 .

[0039] Above the track 8 is a lock body 12 and four guide rails 10. The guide rails 10 have slots on their top, bottom, front, and back surfaces. One end is inserted into the lock body 12 for securement, while the other end has a sliding wheel 9 embedded in the bottom. The bottom of the lock body 12 also has a sliding wheel 9 embedded in it, and the other end is welded to a shaft-shaped lock core 13. A lock spring 5 is also fixed between the lock body 12 and the housing 1 to provide tension for the lock body 12. The lock spring 5 is sheathed on the lock core 13.

[0040] The guide plate 10 has a push rod 4 positioned within its upper and lower slots. This push rod 4 can move horizontally and vertically within the guide plate 10 slot. It has an internal slot and is secured to the guide plate 10 by bolts 11. Four circular holes are defined in the top of the housing 1, and four button holders 3 are secured within these holes. A circular, shaft-shaped button 2 is positioned within each of these holders, allowing it to move only within the holders.

[0041] like Fig. 2 As shown, a C-shaped hook plate 14 is welded to the bottom of the button 2, and an axial through slot is opened on the side. When the button 2 is inserted into the button seat 3, the pin 17 is inserted into the through slot on the button body 18 and the notch on the button seat 3 to limit the rotation of the button 2 in the button seat 3.

[0042] On the other side of the through-slot of button 2, three rectangular slots of equal size are formed. An embedded spring 15 is fixed at the bottom of each slot, the other end of which is fixed to a wedge 16. As button 2 is inserted into button seat 3, the first wedge 16 is retracted by the resistance of button seat 3, allowing button 2 to continue insertion. After moving a certain distance, the first wedge 16 enters the interior of housing 1 and rebounds, trapping button seat 3 between the first and second wedges 16. According to this motion principle, button seat 3 can be trapped between the second and third wedges 16, and between the third wedge 16 and the head of button 2. When button 2 needs to be reset, the latch 17 is first pulled out, and then the button 2 body is rotated so that the wedge 16 can pass through the notch in button seat 3 to complete the reset function.

[0043] like Fig. 3 As shown, the push rod 4 is composed of a push rod body 20 and an oblique support plate 19, the side of which is fixed to one end face of the top of the push rod 4. The oblique support plate 19 is arranged obliquely in the direction of the rod end face, and the angle with the horizontal direction is 30° to 60°.

[0044] When the button 2 is inserted into the button seat 3, the bottom hook plate 14 of the button 2 moves towards the inclined plate 19, and when the two plates contact, the hook plate 14 starts to exert a force on the inclined plate 19, which has a tendency to move horizontally outwards under the reaction force, and when the button 2 continues to be pressed, the inclined plate 19 drives the horizontal push rod 4 body, the guide rail piece 10 and the lock body 12 to move horizontally outwards under the pushing force of the hook plate 14, thereby driving the lock core 13 to move outwards, that is, the unlocking process.

[0045] With the depth of the button 2 pressed into the button seat 3 as the reference, the distance between two adjacent wedge-shaped blocks 16 is one grid, the button 2 entering one grid is 1 gear, the button 2 entering two grids is 2 gear, and the button 2 entering three grids is 3 gear. The installation height of the horizontal push rod 4 is set according to the required gear of the button 2, and taking the required gear as 2 gear as an example, when the button 2 is at the 1 gear position, the hook plate 14 will contact the top of the inclined plate 19; when the button 2 enters the 2 gear from the 1 gear, the hook plate 14 pushes the guide rail piece 10 and the lock body 12 to move; when the button 2 reaches the 2 gear, the bottom of the hook plate 14 is just flush with the bottom of the inclined plate 19, and the guide rail piece 10 and the lock body 12 are in the moved position; when the button 2 moves from the 2 gear to the 3 gear, the inclined plate 19 enters the C-shaped gap of the hook plate 14, and at this time the hook plate 14 no longer produces a force with the inclined plate 19, and the lock body 12 is reset under the action of the lock body spring 5.

[0046] In order to coordinate the gears of multiple buttons and realize the function of the password lock, the installation distance needs to be calculated when setting the horizontal position of the push rod. Taking four buttons as an example, which are numbered as 1, 2, 3 and 4, the corresponding horizontal push rods are a, b, c and d, and the direct moving distance of each horizontal push rod is x, and the distance between adjacent wedge-shaped blocks is y. When the set unlocking password is 3212, the installation heights of the horizontal push rods are y, 2y, 3y and 2y respectively, and the installation horizontal positions are: D1-a=0, D2-b=x, D3-c=2x and D4-d=3x. At this time, the numbers of the buttons are also the button order of the password.

[0047] The mechanical type password door lock realizes the opening and closing of the door lock through a pure mechanical structure, and the mechanical type button can also provide hundreds of password combinations, which guarantees safety, and provides convenience and reliability.

[0048] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mechanical password door lock, characterized in that: The mechanical password door lock comprises: a housing (1), a button (2), a button seat (3), a horizontal push rod (4), a lock body spring (5), a lock box (6), a base plate (7), a track (8), a guide rail (10), a lock body (12), and a lock core (13); The bottom plate (7) is fixed on the door panel, the outer shell (1) is arranged on the bottom plate (7), and a plurality of rails (8) are provided on the top side of the bottom plate (7); The lock body (12) is movably fixed on the track (8), and each track (8) is provided with a guide rail piece (10), the end of each guide rail piece (10) is connected and fixed to one end of the lock body (12) for driving the lock body (12) to move, and the other end of the lock body (12) is provided with a lock core (13), the lock core (13) extends out of the housing (1), and when in a locked state, the end of the lock core is inserted into the lock box (6); A first through slot is provided on the upper and lower sides of each guide rail piece (10), a horizontal push rod (4) is provided in the first through slot, and the horizontal push rod (4) can move in the first through slot in the horizontal and vertical directions; An oblique support plate (19) is provided on the side of the top end of the transverse push rod body (20) of the transverse push rod (4), and the oblique support plate (19) is arranged obliquely in the direction of the end surface of the transverse push rod body (20); The button (2) is fixed on the housing (1) via the button seat (3), and a C-shaped hook plate (14) is provided at the bottom end of the button (2). When each button (2) is pressed downward in a preset order and at a preset depth, the bottom end of the C-shaped hook plate (14) contacts the top surface of the inclined support plate (19) and applies vertical downward pressure to the inclined support plate (19). Under the action of the pressure, the inclined support plate (19) applies a horizontal component force to the horizontal push rod (4), so that the horizontal push rod (4) drives the guide rail (10) to move away from the lock box (6), thereby separating the lock core (13) from the lock box (6) and completing the unlocking.

2. The mechanical password door lock according to claim 1, characterized in that: Each button (2) corresponds to a guide rail piece (10) and is used to push the corresponding guide rail piece (10). Each guide rail piece (10) gradually pulls the lock body (12), thereby achieving the separation of the lock core (13) and the lock box (6) through the joint action of all buttons (2) to complete the unlocking.

3. The mechanical password door lock according to claim 1, characterized in that: The lock core (13) is also sleeved with a lock body spring (5). One end of the lock body spring (5) is connected to the lock body (12), and the other end is connected to the side wall of the shell (1), and is used to provide the lock body (12) with a pulling force to extend the lock core (13) out of the shell (1).

4. The mechanical password door lock according to claim 3, characterized in that: The C-shaped notch of the C-shaped hook plate (14) has the same height in the vertical direction as the projection height of the oblique support plate (19) in the vertical direction; When each button (2) is pressed to the bottom end, under the pulling force of the lock body spring (5), the inclined support plate (19) on each guide rail piece (10) can smoothly pass through the C-shaped notch of each C-shaped hook plate (14) to complete the position recovery. At this time, the lock core (13) is deeply inserted into the lock box (6) again.

5. The mechanical password door lock according to claim 1, characterized in that: The angle between each inclined support plate (19) and the horizontal direction is 30° to 60°.

6. The mechanical password door lock according to claim 1, characterized in that: The side wall of the button (2) is provided with a plurality of level limiting members to complete the limiting of the button (2) during the pressing process and the measurement of the pressing depth.

7. The mechanical password door lock according to claim 6, characterized in that: The limiting member comprises: an embedded spring (15) and a wedge block (16), The embedded spring (15) is embedded in the side wall of the button body (18) of the button (2), and the end of the embedded spring (15) is connected to the wedge block (16). When the button (2) is pressed into the housing (1), the wedge block (16) compresses the embedded spring (15) and enters the notch accommodating the embedded spring (15); When the button (2) stops extending into the housing (1), the wedge block (16) presses against the housing (1), completing the reverse movement limit of the button (2).

8. The mechanical password door lock according to claim 6, characterized in that: The ring body of the button seat (3) is provided with a notch, the side wall of the button body (18) of the button (2) is provided with a vertical latch (17), and the bottom of the latch (17) on the button body (18) is inserted into the notch of the button seat (3); When resetting the button (2), first pull out the latch (17), then rotate the button body (18) so that the limiting member can pass through the notch on the button seat (3), and the button (2) is pulled out to achieve resetting.

9. The mechanical password door lock according to claim 1, characterized in that: A second through slot is provided on the front and rear sides of each guide rail piece (10), and the position of the transverse push rod (4) in the first through slot is fixed by means of a bolt (11) passing through the second through slot.

10. The mechanical password door lock according to claim 1, characterized in that: A sliding wheel (9) is provided between the guide rail piece (10) and the track (8); and a sliding wheel (9) is provided between the lock body (12) and the track (8).

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