Lock structure for safety box

Abstract

The utility model discloses a lock structure for a safety box, which comprises a box door, an upper bolt, a lower bolt, a left bolt and a right bolt which are arranged in the box door and can extend out of the box door, and the lock structure also comprises the following structures: the upper bolt, the lower bolt, the left bolt and the right bolt are all connected with racks; the driving structure comprises a first gear and a gear set which are located in the cabinet door, the first gear is rotatably installed on the cabinet door, and the gear set is meshed with the first gear, a rack on the upper bolt, a rack on the lower bolt, a rack on the left bolt and a rack on the right bolt; when the first gear rotates, the gear set can drive the rack on the upper bolt and the rack on the lower bolt to move relatively in the up-down direction and drive the rack on the left bolt and the rack on the right bolt to move relatively in the left-right direction. Simultaneous movement of the upper bolt, the lower bolt, the left bolt and the right bolt can be achieved only by arranging the first gear, the gear set and the racks, locking or unlocking of the cabinet door is achieved, and the safety of the cabinet door is higher through simultaneous locking of the upper bolt, the lower bolt, the left bolt and the right bolt.

Description

Technical Field

[0001] The utility model relates to the field of safes, in particular to a lock structure for safes. Background Art

[0002] The existing safe includes a cabinet body and a cabinet door. The cabinet door is equipped with a lock structure. The lock structure includes a left bolt, a right bolt and a driving structure. When the cabinet door is closed, the driving structure drives the left bolt and the right bolt to move, thereby locking the cabinet door. The existing lock structure only locks in the left and right directions, and has low security. Utility Model Content

[0003] The utility model is intended to solve at least one of the technical problems existing in the prior art. For this reason, the utility model proposes a lock structure for a safe.

[0004] According to the first aspect of the present invention, the lock structure for a safe comprises a cabinet door, wherein an upper bolt, a lower bolt, a left bolt and a right bolt are installed inside the cabinet door and can extend out of the cabinet door. The lock structure also comprises: the upper bolt, the lower bolt, the left bolt and the right bolt are all connected to a rack; the driving structure comprises a first gear and a gear set located inside the cabinet door, the first gear is rotatably installed on the cabinet door, and the gear set is respectively engaged with the first gear and the multiple racks; when the first gear rotates, it can drive the rack on the upper bolt and the rack on the lower bolt to move relative to each other in the up and down directions through the gear set so that the upper bolt and the lower bolt can extend out of the cabinet door or retract into the cabinet door, and can drive the rack on the left bolt and the rack on the right bolt to move relative to each other in the left and right directions so that the left bolt and the right bolt can extend out of the cabinet door or retract into the cabinet door.

[0005] The lock structure for a safe according to the embodiment of the present invention has at least the following technical effects: by providing a rotatable first gear, a gear set, and connecting the upper bolt, lower bolt, left bolt and right bolt to racks, when the user drives the first gear to rotate, the first gear can simultaneously drive the rack on the upper bolt, the rack on the lower bolt, the rack on the left bolt and the rack on the right bolt through the gear set to move, so that the upper bolt, lower bolt, left bolt and right bolt can be simultaneously extended out of the cabinet door or simultaneously retracted into the cabinet door; the utility model only needs to provide a first gear, a gear set and multiple racks to achieve the simultaneous movement of the upper bolt, lower bolt, left bolt and right bolt, and realize locking or unlocking the cabinet door. By locking the upper bolt, lower bolt, left bolt and right bolt at the same time, the cabinet door is more secure.

[0006] According to some embodiments of the present invention, the gear set includes a second gear and a third gear located on the left and right sides of the first gear and meshing with the first gear, a fourth gear is provided on both the second gear and the third gear, the rack on the left bolt meshes with the fourth gear on the second gear, and the rack on the right bolt meshes with the fourth gear on the third gear.

[0007] According to some embodiments of the present invention, the second gear and the third gear are both provided in plurality, the plurality of second gears are sequentially arranged in the up-down direction and meshed with each other, the plurality of third gears are sequentially arranged in the up-down direction and meshed with each other, and the first gear is respectively meshed with one of the second gears and one of the third gears;

[0008] The left bolt and the right bolt are both connected to a connecting plate, and a plurality of racks spaced apart in the up and down directions are provided on the connecting plate. The plurality of racks on the left bolt are respectively engaged with the fourth gears on the plurality of second gears, and the plurality of racks on the right bolt are respectively engaged with the fourth gears on the plurality of third gears.

[0009] According to some embodiments of the present invention, the rack on the upper bolt is engaged with the second gear or the third gear, and the rack on the lower bolt is engaged with the second gear or the third gear.

[0010] According to some embodiments of the present invention, the second gear is located to the left of the rack on the upper bolt and to the left of the rack on the lower bolt, and the third gear is located to the right of the rack on the upper bolt and to the right of the rack on the lower bolt.

[0011] According to some embodiments of the present invention, a guide post for guiding the movement of the rack is provided in the cabinet door, the rack has a long hole-shaped through slot, and the guide post is located in the through slot.

[0012] According to some embodiments of the present invention, a lock box is provided in the cabinet door, a retractable blocking block is provided in the lock box, and the lock box is provided on one side of the rack, and the lock box is used to block the rack from moving.

[0013] According to some embodiments of the present invention, the lock boxes are provided on the upper and lower sides of the first gear, and the blocking block of one of the lock boxes is used to block the movement of the rack on the left bolt, and the blocking block of the other lock box is used to block the movement of the rack on the right bolt.

[0014] According to some embodiments of the present invention, the cabinet door has a plurality of mounting posts, and the second gear and the third gear are both mounted on the mounting posts via bearings.

[0015] According to some embodiments of the present invention, the invention further includes glass, a steel wire rope, a spring, a mounting seat and a blocking shaft, the glass is located between the lock box and the inner wall of the cabinet door, the mounting seat is installed in the cabinet door, the blocking shaft is installed on the mounting seat so as to be movable up and down, the spring is arranged between the mounting seat and the blocking shaft, one end of the steel wire rope is connected to the blocking shaft, and the other end of the steel wire rope is connected to the glass; when the glass is not damaged by external force, the lower end of the blocking shaft is located in the mounting seat, the spring is biased and applies a biasing force to move the lower end of the blocking shaft to the outside of the mounting seat; when the glass is damaged by external force, the blocking shaft moves downward under the action of the biasing force, so that the lower end of the blocking shaft moves outside the mounting seat and blocks the movement of the left bolt or the right bolt.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a lock structure for a safe from a certain perspective;

[0019] Figure 2 is a front view of a lock structure for a safe;

[0020] Figure 3 Schematic diagram of the structure of the cabinet door;

[0021] Figure 4 It is a cross-sectional view of the mounting column of the lock structure;

[0022] Figure 5 is a structural diagram of a lock structure for a safe from another perspective;

[0023] Figure 6 It is a structural diagram of a lock structure equipped with a blocking shaft.

[0024] Figure 1: Cabinet door 100, glass 101, wire rope 102, spring 103, mounting seat 104, blocking shaft 105, connecting plate 110, guide column 120, lock box 130, blocking block 131, mounting column 140, bearing 141, handle 150, upper bolt 200, lower bolt 300, left bolt 400, right bolt 500, rack 600, through slot 610, drive structure 700, first gear 710, gear set 720, second gear 721, third gear 722, fourth gear 723. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of this utility model, "a plurality" means more than two, and "greater than," "less than," "exceed," etc. are understood to exclude the number itself. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number or order of the technical features indicated.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] Reference Figure 1 As shown, the lock structure for a safe according to an embodiment of the present invention includes a cabinet door 100, wherein an upper bolt 200, a lower bolt 300, a left bolt 400, and a right bolt 500 are installed in the cabinet door 100 and can extend out of the cabinet door 100. The upper bolt 200, the lower bolt 300, the left bolt 400, and the right bolt 500 are all connected to a rack 600; a driving structure 700 includes a first gear 710 and a gear set 720 located in the cabinet door 100, the first gear 710 is rotatably mounted on the cabinet door 100, and the gear set 720 is connected to the rack 600. The wheel set 720 is respectively engaged with the first gear 710, the rack 600 on the upper bolt 200, the rack 600 on the lower bolt 300, the rack 600 on the left bolt 400, and the rack 600 on the right bolt 500; when the first gear 710 rotates, it can drive the rack 600 on the upper bolt 200 and the rack 600 on the lower bolt 300 to move relative to each other in the vertical direction, and drive the rack 600 on the left bolt 400 and the rack 600 on the right bolt 500 to move relative to each other in the horizontal direction.

[0030] By providing a rotatable first gear 710, a gear set 720, and connecting the upper bolt 200, the lower bolt 300, the left bolt 400, and the right bolt 500 with a rack 600, when the user drives the first gear 710 to rotate, the first gear 710 can simultaneously drive the rack 600 on the upper bolt 200, the rack 600 on the lower bolt 300, the rack 600 on the left bolt 400, and the rack 600 on the right bolt 500 to move through the gear set 720, thereby achieving the upper bolt 200 being moved. 00, the lower bolt 300, the left bolt 400 and the right bolt 500 can be extended out of the cabinet door 100 at the same time or retracted into the cabinet door 100 at the same time; the utility model only needs to set the first gear 710, the gear set 720 and multiple racks 600 to achieve the simultaneous movement of the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500, and realize the locking or unlocking of the cabinet door 100. By locking the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 at the same time, the cabinet door is safer.

[0031] Specifically, relative movement refers to two parts moving closer to or farther away from each other.

[0032] During installation, one side of the cabinet door 100 is rotatably mounted on the door frame of the safe; when the door needs to be closed and locked, the user closes the cabinet door 100, and then the user drives the first gear 710 to rotate. The first gear 710 simultaneously drives the rack 600 on the upper bolt 200, the rack 600 on the lower bolt 300, the rack 600 on the left bolt 400, and the rack 600 on the right bolt 500 through the gear set 720 to move, so that the upper bolt 200 moves upward and extends out of the cabinet door 100. , so that the lower bolt 300 moves downward and extends out of the cabinet door 100, the left bolt 400 moves to the left and extends out of the cabinet door 100, and the right bolt 500 moves to the right and extends out of the cabinet door 100, thereby causing the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 to be engaged with the door frame to lock the cabinet door 100; when it is necessary to unlock and open the door, the user reverses the first gear 710, so that the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 are simultaneously retracted into the cabinet door 100.

[0033] In some embodiments of the present invention, Figure 1 As shown, the gear set 720 includes a second gear 721 and a third gear 722 located on the left and right sides of the first gear 710 and meshing with the first gear 710 , and a fourth gear 723 is provided on both the second gear 721 and the third gear 722 ;

[0034] The rack 600 on the left bolt 400 is engaged with the fourth gear 723 on the second gear 721 , and the rack 600 on the right bolt 500 is engaged with the fourth gear 723 on the third gear 722 .

[0035] The first gear 710 can simultaneously drive the rack 600 on the left bolt 400 and the rack 600 on the right bolt 500 to move through the second gear 721, the fourth gear 723 on the second gear 721, the third gear 722, and the fourth gear 723 on the third gear 722, so that when the first gear 710 rotates, the left bolt 400 and the right bolt 500 can move closer to or away from each other; the gear group 720 adopts the above structure to ensure that the internal structure of the cabinet door 100 is simple.

[0036] In a further embodiment of the present invention, Figure 1 As shown, the second gear 721 and the third gear 722 are provided in plurality, the plurality of second gears 721 are sequentially arranged and meshed with each other in the up-down direction, the plurality of third gears 722 are sequentially arranged and meshed with each other in the up-down direction, and the first gear 710 is respectively meshed with one of the second gears 721 and one of the third gears 722;

[0037] Both the left bolt 400 and the right bolt 500 are connected to a connecting plate 110, on which a plurality of racks 600 spaced apart in the up and down directions are provided. The plurality of racks 600 on the left bolt 400 are respectively engaged with the fourth gears 723 on the plurality of second gears 721, and the plurality of racks 600 on the right bolt 500 are respectively engaged with the fourth gears 723 on the plurality of third gears 722.

[0038] There are multiple left bolts 400 and multiple right bolts 500 , which are spaced apart on one side of the connecting plate 110 along the vertical direction. The other end of the connecting plate 110 is connected to the rack 600 .

[0039] By providing a plurality of second gears 721 connected in sequence along the up-down direction and the left bolt 400 being connected to a plurality of racks 600 spaced apart along the up-down direction, the plurality of racks 600 on the connecting plate 110 can be engaged with the fourth gear 723 on the plurality of second gears 721, and then the middle, upper and lower parts of the connecting plate 110 can be driven to move at the same time by the plurality of racks 600, thereby ensuring that the plurality of left bolts 400 on the connecting plate 110 can move synchronously; the right bolt 500 is also connected to the connecting plate 110 to ensure the synchronization of the movement of the plurality of right bolts 500.

[0040] In a further embodiment of the present invention, Figure 2 As shown, the rack 600 on the upper bolt 200 is engaged with the second gear 721 or the third gear 722 , and the rack 600 on the lower bolt 300 is engaged with the second gear 721 or the third gear 722 .

[0041] When the first gear 710 drives the second gear 721 and the third gear 722 to rotate, the rack 600 on the upper bolt 200 and the rack 600 on the lower bolt 300 can be driven to move closer to or away from each other in the up and down directions. At the same time, the rack 600 on the left bolt 400 and the gear on the lower bolt 300 are driven to move closer to or away from each other in the left and right directions through the fourth gear 723 on the second gear 721 and the fourth gear 723 on the third gear 722. That is, the utility model realizes the synchronous movement of the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 through the first gear 710, the second gear 721, the fourth gear 723 on the second gear 721, the third gear 722, the fourth gear 723 on the third gear 722 and the rack 600, so that the internal structure of the cabinet door 100 is simple.

[0042] like Figure 2 As shown, specifically, there are five second gears 721, which are defined as A1, A2, A3, A4, and A5 respectively; there are also five third gears 722, which are defined as B1, B2, B3, B4, and B5 respectively; the connecting plate 110 of the left bolt 400 is connected to three racks 600, which are defined as C1, C2, and C3 respectively; the connecting plate 110 of the right bolt 500 is also connected to three racks 600, which are defined as D1, D2, and D3 respectively;

[0043] A1, A2, A3, A4, and A5 are connected in sequence along the up-down direction; B1, B2, B3, B4, and B5 are connected in sequence along the up-down direction; the five second gears 721 are located to the left of the five third gears 722; the first gear 710 is located between A3 and B3 and meshes with A3 and B3; C1 is located above and meshes with the fourth gear 723 of A2; C2 is located above and meshes with the fourth gear 723 of A4; C3 is located below and meshes with the fourth gear 723 of A5; D1 is located above and meshes with the fourth gear 723 of B1; D2 is located below and meshes with the fourth gear 723 of B2; and D3 is located below and meshes with the fourth gear 723 of B4;

[0044] The rack 600 of the upper bolt 200 can be located to the left of A1 and meshed therewith, or located to the left of B1 and meshed therewith;

[0045] The rack 600 of the lower bolt 300 can be located to the right of A5 and meshed with it, or located to the right of B5 and meshed with it. From the above, it can be seen that the rack 600 of the upper bolt 200 and the rack 600 of the lower bolt 300 can both be driven to move by the second gear 721 or the third gear 722.

[0046] Taking the example that the rack 600 of the upper bolt 200 can be located on the left of B1 and meshed therewith, and the rack 600 of the lower bolt 300 can be located on the right of A5 and meshed therewith, during operation, the first gear 710 rotates clockwise, A3 and B3 rotate counterclockwise, A2 and B2 rotate clockwise, A1 and B1 rotate counterclockwise, A4 and B4 rotate clockwise, and A5 and B5 rotate counterclockwise;

[0047] A2, A4, and A5 drive C1, C2, and C3 to move rightward synchronously through the fourth gear 723, so that the multiple left bolts 400 move rightward;

[0048] B1, B2, and B4 respectively drive D1, D2, and D3 to move left synchronously through the fourth gear 723, so that the multiple right bolts 500 move leftward;

[0049] B1 drives the rack 600 of the upper bolt 200 to move downward, so that the upper bolt 200 moves downward, and A5 drives the rack 600 of the lower bolt 300 to move upward, so that the lower bolt 300 moves upward;

[0050] The above movements are all carried out synchronously, thereby achieving the synchronous retraction of the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 into the cabinet door 100; conversely, when the first gear 710 rotates counterclockwise, the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 are synchronously extended out of the cabinet door 100.

[0051] In a further embodiment of the present invention, Figure 2 As shown, the second gear 721 is located to the left of the rack 600 on the upper bolt 200 and to the left of the rack 600 on the lower bolt 300, and the third gear 722 is located to the right of the rack 600 on the upper bolt 200 and to the right of the rack 600 on the lower bolt 300, so as to make full use of the space between the second gear 721 and the third gear 722, so that the structure of the cabinet door 100 is more compact.

[0052] In some embodiments of the present invention, Figure 1 As shown, a guide post 120 for guiding the movement of the rack 600 is provided in the cabinet door 100. The rack 600 has a long hole-shaped through groove 610. The guide post 120 is located in the through groove 610. By providing the guide post 120, the rack 600 can move accurately.

[0053] In a further embodiment of the present invention, Figure 1As shown, a lock box 130 is provided in the cabinet door 100, and a retractable blocking block 131 is provided in the lock box 130. The lock box 130 is provided on one side of the rack 600. The lock box 130 is used to block the rack 600 from moving. When the upper bolt 200, the lower bolt 300, the left bolt 400 and the right bolt 500 are all extended out of the cabinet door 100, the lock box 130 drives the blocking block 131 to extend, and the blocking block 131 blocks the rack 600 from moving, so that the multiple second gears 721, the multiple third gears 722 and the first gear 710 cannot rotate, and the cabinet door 100 remains locked. The user needs to drive the lock box 130 to retract the blocking block 131 so that the cabinet door 100 can be unlocked normally.

[0054] In a further embodiment of the present invention, Figure 1 As shown, lock boxes 130 are provided on the upper and lower sides of the first gear 710, and the blocking block 131 of one lock box 130 is located to the right of the rack 600 of the left bolt 400, and the blocking block 131 of the other lock box 130 is located to the left of the rack 600 of the right bolt 500, so as to make full use of the space between the second gear 721 and the third gear 722. By providing two lock boxes 130, the user needs to unlock the two lock boxes 130 at the same time to rotate the first gear 710 normally, thereby improving the safety of the cabinet door 100.

[0055] In some embodiments of the present invention, Figure 3 、 4 As shown, the cabinet door 100 has multiple mounting posts 140, and the second gear 721 and the third gear 722 are both mounted on the mounting posts 140 through bearings 141, so that the rotation of the second gear 721 and the rotation of the third gear 722 are smoother, and the gear set 720 can be rotated without greater force.

[0056] In some embodiments of the present invention, Figure 5 As shown, a handle 150 is also included. The handle 150 is rotatably installed outside the cabinet door 100 and is fixedly connected to the first gear 710. The handle 150 is provided to facilitate the user to drive the first gear 710 to rotate.

[0057] In some embodiments of the present invention, Figure 6 As shown, it also includes a glass 101, a steel wire rope 102, a spring 103, a mounting base 104 and a blocking shaft 105. The glass 101 is located between the lock box 130 and the inner wall of the cabinet door 100. The mounting base 104 is installed in the cabinet door 100. The blocking shaft 105 is installed on the mounting base 104 so as to be movable up and down. The spring 103 is provided between the mounting base 104 and the blocking shaft 105. One end of the steel wire rope 102 is connected to the blocking shaft 105, and the other end of the steel wire rope 102 is connected to the glass 101.

[0058] When the glass 101 is not damaged by external force, the lower end of the blocking shaft 105 is located in the mounting seat 104, and the spring 103 biases and applies a biasing force that moves the lower end of the blocking shaft 105 out of the mounting seat 104;

[0059] When the glass 101 is damaged by external force, the blocking shaft 105 moves downward under the action of the biasing force, so that the lower end of the blocking shaft 105 moves outside the mounting seat 104 and blocks the left bolt 400 or the right bolt 500 from moving.

[0060] By providing the above structure, if someone wants to drill open the lock box 130 from outside the cabinet door 100, the glass 101 will be drilled and broken first, causing the wire rope 102 to loosen, and the blocking shaft 105 will move downward under the biasing force of the spring 103. The lower end of the blocking shaft 105 will move to the outside of the mounting seat 104 and block the left bolt 400 or the right bolt 500 from moving, so that the cabinet door 100 cannot be opened normally, thereby improving the safety of the cabinet door 100.

[0061] Specifically, if Figure 6 As shown, the mounting base 104 is located on one side of the connecting plate 110 of the right bolt 500. When the right bolt 500 extends out of the cabinet door 100 and the glass 101 is damaged by external force, the lower end of the blocking shaft 105 moves to the left of the connecting plate 110 of the right bolt 500 under the action of the biasing force of the spring 103, thereby blocking the right bolt 500 from moving to the left, so that the cabinet door 100 is in a locked state.

[0062] Specifically, the mounting seat 104 has a slot, the blocking shaft 105 is mounted on the mounting seat 104 so as to be movable up and down and can pass through the slot, the outer side of the blocking shaft 105 has a protrusion located in the slot, and the spring 103 is arranged between the upper side wall of the slot and the protrusion.

[0063] Throughout this specification, references to the terms "some embodiments" or "it is contemplated that" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lock structure for a safe, comprising a door, wherein an upper bolt, a lower bolt, a left bolt, and a right bolt are installed inside the door and can extend out of the door, wherein: Also includes: The upper bolt, the lower bolt, the left bolt and the right bolt are all connected with a rack; A driving structure comprising a first gear and a gear set located inside the cabinet door, wherein the first gear is rotatably mounted on the cabinet door, and the gear set is respectively engaged with the first gear and the plurality of racks; When the first gear rotates, it can drive the rack on the upper bolt and the rack on the lower bolt to move relative to each other in the up and down directions through the gear set, so that the upper bolt and the lower bolt can be extended out of the cabinet door or retracted into the cabinet door, and it can also drive the rack on the left bolt and the rack on the right bolt to move relative to each other in the left and right directions, so that the left bolt and the right bolt can be extended out of the cabinet door or retracted into the cabinet door.

2. The lock structure for a safe according to claim 1, characterized in that: The gear set includes a second gear and a third gear located on the left and right sides of the first gear and meshing with the first gear. A fourth gear is provided on both the second gear and the third gear. The rack on the left bolt meshes with the fourth gear on the second gear, and the rack on the right bolt meshes with the fourth gear on the third gear.

3. The lock structure for a safe according to claim 2, characterized in that: The second gear and the third gear are both provided in plurality, the plurality of second gears are sequentially arranged in the up-down direction and meshed with each other, the plurality of third gears are sequentially arranged in the up-down direction and meshed with each other, and the first gear is respectively meshed with one of the second gears and one of the third gears; The left bolt and the right bolt are both connected to a connecting plate, and a plurality of racks spaced apart in the up and down directions are provided on the connecting plate. The plurality of racks on the left bolt are respectively engaged with the fourth gears on the plurality of second gears, and the plurality of racks on the right bolt are respectively engaged with the fourth gears on the plurality of third gears.

4. The lock structure for a safe according to claim 3, characterized in that: The rack on the upper bolt is engaged with the second gear or the third gear, and the rack on the lower bolt is engaged with the second gear or the third gear.

5. The lock structure for a safe according to claim 4, characterized in that: The second gear is located to the left of the rack on the upper bolt and to the left of the rack on the lower bolt, and the third gear is located to the right of the rack on the upper bolt and to the right of the rack on the lower bolt.

6. The lock structure for a safe according to claim 1, characterized in that: A guide post for guiding the rack to move is provided in the cabinet door. The rack has a long hole-shaped through slot, and the guide post is located in the through slot.

7. The lock structure for a safe according to claim 1 or 2, characterized in that: A lock box is provided in the cabinet door, wherein a retractable blocking block is provided in the lock box. The lock box is provided on one side of the rack and is used to block the rack from moving.

8. The lock structure for a safe according to claim 7, characterized in that: The lock boxes are provided on both the upper and lower sides of the first gear, wherein the blocking block of one of the lock boxes is used to block the movement of the rack on the left bolt, and the blocking block of the other lock box is used to block the movement of the rack on the right bolt.

9. The lock structure for a safe according to claim 2, characterized in that: The cabinet door is provided with a plurality of mounting columns, and the second gear and the third gear are both mounted on the mounting columns via bearings.

10. The lock structure for a safe according to claim 7, characterized in that: The cabinet further comprises a glass, a steel wire rope, a spring, a mounting seat and a blocking shaft, wherein the glass is located between the lock box and the inner wall of the cabinet door, the mounting seat is installed in the cabinet door, the blocking shaft is mounted on the mounting seat so as to be movable up and down, the spring is arranged between the mounting seat and the blocking shaft, one end of the steel wire rope is connected to the blocking shaft, and the other end of the steel wire rope is connected to the glass; When the glass is not damaged by external force, the lower end of the blocking shaft is located in the mounting seat, and the spring biases and applies a biasing force that moves the lower end of the blocking shaft out of the mounting seat; When the glass is damaged by external force, the blocking shaft moves downward under the action of the biasing force, so that the lower end of the blocking shaft moves outside the mounting seat and blocks the movement of the left bolt or the right bolt.

Images