Door opening and closing device and safety box

Abstract

The utility model provides a door opening and closing device and a safe case, the door opening and closing device comprises a safe case main body and a door opening and closing assembly, and a door opening and closing assembly is rotatably installed on the safe case main body and opens or closes the safe case main body. The pressing piece is rotatably installed on the opening and closing door and exposed to the external environment. The pressing piece is pressed by a user; the movable seat is connected to the pressing piece and moves along with pressing of the pressing piece. The movable seat is movably mounted on the opening and closing door; the plurality of locking pieces are telescopically connected to the opening and closing door. The multiple locking pieces stretch out and draw back relative to the opening and closing door along with movement of the movable base so as to lock or break away from the corresponding locking holes in the safe case body, one movable base drives the multiple locking pieces to stretch out and draw back, and therefore the multiple locking pieces can lock or break away from the safe case body in different directions. The situation that one moving seat can only drive one locking piece to stretch out and draw back is avoided, the operation convenience of the opening and closing door device is improved, and the locking stability of the opening and closing door and the safety box body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of safes, in particular to a door opening and closing device and a safe. Background Art

[0002] With the development of science and technology, safes are used for storage in homes and businesses, and are also widely used in banks, museums and other places. Safes are used to store one's precious money and valuables, and the opening and closing device acts as a part of the safe.

[0003] In the prior art, the existing opening and closing door device includes an opening and closing door, multiple pressing members, multiple moving seats and multiple locking members, wherein the multiple pressing members are rotatably installed on the opening and closing door and exposed to the external environment; the pressing members are used for being pressed by users; each moving seat is respectively connected to each pressing member, the multiple moving seats are movably installed on the opening and closing door, and the multiple locking members are telescopically connected to the opening and closing door, and each locking member is telescopically extended and retracted relative to the opening and closing door as the moving seats move to lock or disengage from the corresponding locking hole in the safe body, but one moving seat can only drive one locking member to retract and retract, and it is impossible to achieve synchronous retraction and retraction of multiple locking members, resulting in poor operating convenience of the existing opening and closing door device. Utility Model Content

[0004] The utility model aims to provide an opening and closing door device and a safe, wherein the opening and closing door assembly comprises an opening and closing door, a pressing piece, a moving seat, and a plurality of locking pieces; the opening and closing door is rotatably mounted on the safe body and opens or closes the safe body; the pressing piece is rotatably mounted on the opening and closing door and is exposed to the external environment; the pressing piece is used for being pressed by a user; the moving seat is connected to the pressing piece and moves as the pressing piece is pressed; the moving seat is movably mounted on the opening and closing door; a plurality of locking pieces are telescopically connected to the opening and closing door; the plurality of locking pieces are telescopically extended and retracted relative to the opening and closing door as the moving seat moves to lock or disengage from the corresponding locking holes in the safe body, so that one moving seat drives the extension and retraction of a plurality of locking pieces, thereby realizing that a plurality of locking pieces lock or disengage the safe body in different directions, avoiding the situation that one moving seat can only drive one locking piece to extend and retract, improving the operating convenience of the opening and closing door device, and ensuring the locking stability of the opening and closing door and the safe body.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A door opening and closing device is applied to a safe, wherein the safe comprises a safe body;

[0007] The door opening and closing device comprises:

[0008] The opening and closing door assembly comprises an opening and closing door, a pressing member, a moving seat, and a plurality of locking members; the opening and closing door is rotatably mounted on the safe body and opens or closes the safe body; the pressing member is rotatably mounted on the opening and closing door and exposed to the external environment; the pressing member is used for being pressed by a user; the moving seat is connected to the pressing member and moves with the pressing of the pressing member; the moving seat is movably mounted on the opening and closing door;

[0009] The plurality of locking members are telescopically connected to the opening and closing door; the plurality of locking members are telescopic relative to the opening and closing door as the moving base moves, so as to lock or disengage the corresponding locking holes in the safe body.

[0010] Optionally, a plurality of locking members are respectively arranged at different positions of the opening and closing door and correspond to side walls of the opening and closing door in different directions;

[0011] The plurality of locking members are synchronously locked or disengaged from the corresponding locking holes in the safe body as the same moving base moves.

[0012] Optionally, the plurality of locking members include a first locking member, the first locking member being telescopically movable along a front-to-rear direction relative to the opening and closing door;

[0013] The first locking member is connected to the front end of the movable base, and is locked or disengaged from the corresponding locking hole in the safe body as the front end of the movable base moves forward and backward.

[0014] Optionally, a first supporting seat is provided between the first locking member and the front end portion of the movable seat;

[0015] There are multiple first locking members, and the multiple first locking members are all connected to the same first supporting seat. The first supporting seat is movably installed on the opening and closing door, and moves forward and backward driven by the front end of the movable seat.

[0016] Optionally, the plurality of locking members include a second locking member and a third locking member, and the second locking member and the third locking member are retracted along the up-down direction on the opening and closing door;

[0017] The second locking member is connected to the upper end of the movable base, and is locked or disengaged from the corresponding locking hole in the safe body as the upper end of the movable base moves up and down;

[0018] The third locking member is connected to the lower end of the movable base, and is locked with or released from the corresponding locking hole in the safe body as the lower end of the movable base moves up and down.

[0019] Optionally, a first rotating bracket is provided between the second locking member and the opening and closing door, and the first rotating bracket is rotatably mounted on the opening and closing door;

[0020] The first rotating bracket is provided with a first support arm and a second support arm, and the first support arm and the second support arm are arranged at an angle;

[0021] The first arm is movably connected to the upper end of the movable seat and swings along with the upper end of the movable seat moving up and down;

[0022] The second arm is movably connected to the second locking member, and the second arm swings along with the swing of the first arm, and drives the second locking member to lock or disengage from the corresponding locking hole in the safe body;

[0023] or,

[0024] A second rotating bracket is provided between the third locking member and the opening and closing door, and the second rotating bracket is rotatably mounted on the opening and closing door;

[0025] The second rotating bracket is provided with a third support arm and a fourth support arm, and the third support arm and the fourth support arm are arranged at an angle;

[0026] The third arm is movably connected to the lower end of the movable seat and swings along with the up and down movement of the lower end of the movable seat;

[0027] The fourth arm is movably connected to the third locking member. The fourth arm swings along with the swing of the third arm and drives the third locking member to lock or disengage from the corresponding locking hole in the safe body.

[0028] Optionally, a connecting rod is provided between the pressing member and the movable seat, and the connecting rod is swingably connected to the opening and closing door; both ends of the connecting rod are respectively connected to the pressing member and the movable seat, and the connecting rod drives the movable seat to move as the pressing member is pressed.

[0029] Optionally, the opening and closing door device further comprises an abutment rod, which is telescopically connected to the opening and closing door and telescopes in the front-rear direction;

[0030] When the abutment rod extends out of the opening and closing door, one end of the abutment rod is exposed to the outside of the opening and closing door and can contact the inner wall of the safe body;

[0031] When the abutting rod contacts the inner side wall of the safe body, the abutting rod will be subjected to the force of the inner side wall of the safe body.

[0032] Optionally, the abutment rod is connected to the movable seat;

[0033] A first elastic member is provided between the abutment rod and the opening and closing door, the first elastic member is arranged in the front-to-back direction and elastically contacts the abutment rod and the opening and closing door;

[0034] A second elastic member is provided between the moving seat and the opening and closing door. The second elastic member is arranged along the front-to-back direction and elastically contacts the moving seat and the opening and closing door.

[0035] A safe comprises the door opening and closing device.

[0036] Compared with the prior art, the beneficial effect of the utility model is that multiple locking parts in the utility model are extended and retracted relative to the opening and closing door as the moving seat moves, so as to lock or disengage the corresponding locking holes in the safe body, so that one moving seat drives the extension and retraction of multiple locking parts, thereby realizing that multiple locking parts can lock or disengage the safe body in different directions, avoiding the situation that one moving seat can only drive one locking part to extend and retract, improving the operating convenience of the opening and closing door device, and ensuring the locking stability of the opening and closing door and the safe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0038] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0039] Figure 1 A schematic diagram of a door opening and closing device according to the utility model of the present application is shown.

[0040] Figure 2 A schematic diagram showing the locked state of the opening and closing door assembly of the opening and closing door device according to the utility model of the present application is shown.

[0041] Figure 3 A cross-sectional view showing a locked state of the door opening and closing device according to the utility model of the present application is shown.

[0042] Figure 4 A schematic diagram showing the disengaged state of the opening and closing door assembly of the opening and closing door device according to the utility model of the present application is shown.

[0043] Figure 5 A rear view showing a disengaged state of an opening and closing door assembly of an opening and closing door device according to the utility model of the present application is shown.

[0044] Attached photos

[0045] 100. Door opening and closing device;

[0046] 10. Safe body;

[0047] 20. Opening and closing door assembly; 21. Opening and closing door; 22. Pressing member; 23. Moving seat; 231. Second elastic member; 24. Locking member; 241. First locking member; 2411. First supporting seat; 242. Second locking member; 2421. First rotating bracket; 24211. First supporting arm; 24212. Second supporting arm; 243. Third locking member; 2431. Second rotating bracket; 24311. Third supporting arm; 24312. Fourth supporting arm; 25. Connecting rod;

[0048] 30. Abutment rod; 31. First elastic member. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0050] Please refer to the attached Figures 1-2 The utility model provides a door opening and closing device 100, which is applied to a safe. The safe brain includes a safe body 10, and the door opening and closing device 100 is used to lock or disengage the safe body 10.

[0051] Please refer to the attached Figures 1-2 In an embodiment of the present application, the opening and closing door device 100 includes an opening and closing door assembly 20, which is arranged on the outside of the safe body 10. The opening and closing door assembly 20 can be rotatably installed on the safe body 10 to facilitate adjusting the position of the opening and closing door assembly 20 relative to the safe body 10, thereby facilitating the opening and closing door assembly 20 to open or close the safe body 10.

[0052] Please refer to the attached Figures 1 to 5In the embodiment of the present application, the opening and closing door assembly 20 includes an opening and closing door 21, a pressing member 22, a moving seat 23, and a plurality of locking members 24; the opening and closing door 21 is rotatably mounted on the safe body 10, so as to adjust the position of the opening and closing door 21 relative to the safe body 10, and the opening and closing door 21 opens or closes the safe body 10. The pressing member 22 is rotatably mounted on the opening and closing door 21, so as to adjust the position of the pressing member 22 relative to the opening and closing door 21, and the pressing member 22 is exposed to the external environment. The pressing member 22 is used for being pressed by the user; the moving seat 23 is connected to the pressing member 22, and moves with the pressing of the pressing member 22; the moving seat 23 is movably mounted on the opening and closing door 21, so as to adjust the position of the moving seat 23 relative to the opening and closing door 21, so as to facilitate the pressing member 22 to drive the moving seat 23 of the pressing member 22 to move relative to the opening and closing door 21.

[0053] Please refer to the attached Figures 1 to 5 , wherein a plurality of locking members 24 are telescopically connected to the opening and closing door 21, so as to adjust the positions of the plurality of locking members 24 relative to the opening and closing door 21. The plurality of locking members 24 are telescopically connected to the opening and closing door 21 with the movement of the moving seat 23, so as to lock or disengage the corresponding locking holes in the safe body 10, so that one moving seat 23 drives the telescopic movement of the plurality of locking members 24, thereby realizing that the plurality of locking members 24 lock or disengage the safe body 10 in different directions, avoiding the situation that one moving seat 23 can only drive one locking member 24 to telescope, improving the operation convenience of the opening and closing door device 100, and ensuring the locking stability of the opening and closing door 21 and the safe body 10.

[0054] Please refer to the attached Figures 1 to 5 , multiple locking members 24 are respectively arranged at different positions of the opening and closing door 21, and correspond to the side walls of the opening and closing door 21 in different directions. The multiple locking members 24 are synchronously locked or disengaged from the corresponding locking holes in the safe body 10 as the same moving base 23 moves, so that the multiple locking members 24 are respectively locked or disengaged from the side walls of the safe body 10 in multiple directions, thereby improving the locking effect of the locking members 24 relative to the safe body 10 and ensuring the locking stability of the opening and closing door 21 relative to the safe body 10.

[0055] Please refer to the attached Figures 1 to 5 The plurality of locking members 24 include a first locking member 241, which is telescopically arranged along the front-to-back direction relative to the opening and closing door 21, so as to adjust the front-to-back position of the first locking member 241 relative to the opening and closing door 21. The first locking member 241 is connected to the front end of the moving seat 23, and locks or disengages from the corresponding locking hole in the safe body 10 as the front end of the moving seat 23 moves forward and backward, so that the first locking member 241 is driven by the front end of the moving seat 23 to lock or disengage from the front end of the safe body 10.

[0056] Please refer to the attached Figures 1 to 5 A first support seat 2411 is provided between the first locking member 241 and the front end of the moving seat 23, and the first support seat 2411 is located between the first locking member 241 and the front end of the moving seat 23. The first locking member 241 has a plurality of first locking members 241, and the plurality of first locking members 241 are arranged at intervals along the length direction of the first support seat 2411. The plurality of first locking members 241 are all connected to the same first support seat 2411. The first support seat 2411 is movably mounted on the opening and closing door 21, and moves forward and backward under the drive of the front end of the moving seat 23, so as to adjust the position of the first support seat 2411 relative to the opening and closing door 21, so as to facilitate the front end of the moving seat 23 to be connected to the plurality of first locking members 241 through the first support seat 2411. Then, the first support seat 2411 drives the plurality of first locking members 241 to lock or disengage from the safe body 10, and the locking effect of the first locking members 241 relative to the safe body 10 is increased by arranging the plurality of first locking members 241.

[0057] Please refer to the attached Figures 1 to 5 The plurality of locking members 24 include a second locking member 242 and a third locking member 243, which are telescopically arranged in the vertical direction relative to the opening and closing door 21, so as to adjust the vertical direction of the second locking member 242 and the third locking member 243 relative to the opening and closing door 21. The second locking member 242 is connected to the upper end of the moving seat 23, and is locked or disengaged from the corresponding locking hole in the safe body 10 as the upper end of the moving seat 23 moves up and down, so that the second locking member 242 is driven by the upper end of the moving seat 23 to lock or disengage from the upper end of the safe body 10.

[0058] Please refer to the attached Figures 1 to 5 The third locking member 243 is connected to the lower end of the moving seat 23, and locks or disengages from the corresponding locking hole in the safe body 10 as the lower end of the moving seat 23 moves up and down, so that the second locking member 242 is driven by the upper end of the moving seat 23 to lock or disengage from the lower end of the safe body 10. The second locking member 242 and the third locking member 243 move in opposite directions, so that the second locking member 242 and the third locking member 243 can lock or disengage from the safe body 10 at the same time.

[0059] A first rotating bracket 2421 is provided between the second locking member 242 and the opening and closing door 21 . The first rotating bracket 2421 is rotatably mounted on the opening and closing door 21 , so as to facilitate adjusting the position of the first rotating bracket 2421 relative to the opening and closing door 21 .

[0060] Please refer to the attached Figures 1 to 5The first rotating bracket 2421 is provided with a first arm 24211 and a second arm 24212, and the first arm 24211 and the second arm 24212 are arranged at an angle. The first arm 24211 is movably connected to the upper end of the moving seat 23 so that the first arm 24211 can be corrected relative to the moving seat 23, and the first arm 24211 swings as the upper end of the moving seat 23 moves up and down. The second arm 24212 is movably connected to the second locking component 242 so that the second arm 24212 can be corrected relative to the second locking component 242. The second arm 24212 swings with the swing of the first arm 24211, and drives the second locking component 242 to lock or disengage from the corresponding locking hole in the safe body 10, so that the movable seat 23 drives the second locking component 242 to move through the first arm 24211 and the second arm 24212, so as to realize the second locking component 242 locking or disengaging from the upper end of the safe body 10.

[0061] Please refer to the attached Figures 1 to 5 A second rotating bracket 2431 is provided between the third locking member 243 and the opening and closing door 21 , and the second rotating bracket 2431 is rotatably mounted on the opening and closing door 21 ; so as to facilitate adjusting the position of the second rotating bracket 2431 relative to the opening and closing door 21 .

[0062] Please refer to the attached Figures 1 to 5 The second rotating bracket 2431 is provided with a third arm 24311 and a fourth arm 24312, and the third arm 24311 and the fourth arm 24312 are arranged at an angle. The third arm 24311 is movably connected to the lower end of the moving seat 23 so that the third arm 24311 can be corrected relative to the moving seat 23, and the third arm 24311 swings as the lower end of the moving seat 23 moves up and down. The fourth arm 24312 is movably connected to the third locking component 243, and the fourth arm 24312 swings with the swing of the third arm 24311, so that the fourth arm 24312 can be corrected relative to the third locking component 243, and the fourth arm 24312 drives the third locking component 243 to lock or disengage from the corresponding locking hole in the safe body 10, so that the movable seat 23 drives the third locking component 243 to move through the third arm 24311 and the fourth arm 24312, so as to realize the third locking component 243 locking or disengaging the lower end of the safe body 10.

[0063] Please refer to the attached Figures 1 to 5A connecting rod 25 is provided between the pressing member 22 and the moving seat 23, and the connecting rod 25 is swingably connected to the opening and closing door 21, so as to adjust the position of the connecting rod 25 relative to the opening and closing door 21. The two ends of the connecting rod 25 are respectively connected to the pressing member 22 and the moving seat 23, and the connecting rod 25 drives the moving seat 23 to move as the pressing member 22 is pressed, so that the pressing member 22 drives the moving seat 23 to move via the connecting rod 25, thereby facilitating the moving seat 23 to move as the pressing member 22 is pressed.

[0064] Please refer to the attached Figures 1 to 5 The door opening and closing device 100 further includes an abutment rod 30, which is telescopically connected to the door opening and closing 21 and telescopically extended in the front-rear direction, so as to adjust the position of the abutment rod 30 relative to the door opening and closing 21. When the abutment rod 30 extends out of the door opening and closing 21, one end of the abutment rod 30 is exposed to the outside of the door opening and closing 21 and can contact the inner side wall of the safe body 10. When the abutment rod 30 contacts the inner side wall of the safe body 10, it is subjected to the force of the inner side wall of the safe body 10, so that the inner side wall of the safe body 10 presses the door opening and closing 21 through the abutment rod 30, thereby facilitating the connection between the door opening and closing 21 and the safe body 10.

[0065] Please refer to the attached Figures 2 to 5 The abutment rod 30 is connected to the movable seat 23; a first elastic member 31 is provided between the abutment rod 30 and the opening and closing door 21, and the first elastic member 31 is arranged along the front-to-back direction and elastically contacts the abutment rod 30 and the opening and closing door 21, so that the first elastic member 31 applies an elastic force relative to the abutment rod 30 under the elastic action; so that the abutment rod 30 can be reset.

[0066] Please refer to the attached Figures 2 to 5 A second elastic member 231 is provided between the movable seat 23 and the opening and closing door 21. The second elastic member 231 is arranged along the front-to-back direction and elastically contacts the movable seat 23 and the opening and closing door 21, so that the second elastic member 231 applies an elastic force relative to the movable seat 23 under elastic action, so that the movable seat 23 can be reset.

[0067] In another embodiment, a safe includes an opening and closing door device 100. The opening and closing door device 100 is a part of the safe. The safe is used to store one's own precious money and valuable items to ensure that each of our valuable items is not taken away.

[0068] Compared with the prior art, the beneficial effects of the utility model are:

[0069] The utility model provides an opening and closing door device 100 and a safe, wherein the opening and closing door assembly 20 comprises an opening and closing door 21, a pressing member 22, a moving seat 23, and a plurality of locking members 24. The opening and closing door 21 is rotatably mounted on the safe body 10, and opens or closes the safe body 10; the pressing member 22 is rotatably mounted on the opening and closing door 21, and is exposed to the external environment. The pressing member 22 is used for being pressed by a user; the moving seat 23 is connected to the pressing member 22, and moves as the pressing member 22 is pressed; the moving seat 23 is movably mounted on the opening and closing door 21; and a plurality of locking members 24 are telescopically connected to the opening and closing door 21. As the movable seat 23 moves, multiple locking components 24 are extended and retracted relative to the opening and closing door 21 to lock or disengage the corresponding locking holes in the safe body 10, so that one movable seat 23 drives the extension and retraction of multiple locking components 24, thereby realizing that multiple locking components 24 can lock or disengage the safe body 10 in different directions, avoiding the situation where one movable seat 23 can only drive one locking component 24 to extend and retract, improving the operating convenience of the opening and closing door device 100, and ensuring the locking stability of the opening and closing door 21 and the safe body 10.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0072] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A door opening and closing device, characterized in that: Applied to a safe, the safe comprises a safe body; The door opening and closing device comprises: The opening and closing door assembly comprises an opening and closing door, a pressing member, a moving seat, and a plurality of locking members; the opening and closing door is rotatably mounted on the safe body and opens or closes the safe body; the pressing member is rotatably mounted on the opening and closing door and exposed to the external environment; the pressing member is used for being pressed by a user; the moving seat is connected to the pressing member and moves with the pressing of the pressing member; the moving seat is movably mounted on the opening and closing door; The plurality of locking members are telescopically connected to the opening and closing door; the plurality of locking members are telescopic relative to the opening and closing door as the moving base moves, so as to lock or disengage the corresponding locking holes in the safe body.

2. The door opening and closing device according to claim 1, characterized in that: The plurality of locking members are respectively arranged at different positions of the opening and closing door and correspond to the side walls of the opening and closing door in different directions; The plurality of locking members are synchronously locked or disengaged from the corresponding locking holes in the safe body as the same moving base moves.

3. The door opening and closing device according to claim 2, characterized in that: The plurality of locking members include a first locking member, which is telescopically arranged on the opening and closing door along a front-to-back direction; The first locking member is connected to the front end of the movable base, and is locked or disengaged from the corresponding locking hole in the safe body as the front end of the movable base moves forward and backward.

4. The door opening and closing device according to claim 3, characterized in that: A first supporting seat is provided between the first locking member and the front end portion of the movable seat; There are multiple first locking members, and the multiple first locking members are all connected to the same first supporting seat. The first supporting seat is movably installed on the opening and closing door, and moves forward and backward driven by the front end of the movable seat.

5. The door opening and closing device according to claim 2, characterized in that: The plurality of locking members include a second locking member and a third locking member, and the second locking member and the third locking member are telescopically movable along the vertical direction on the opening and closing door; The second locking member is connected to the upper end of the movable base, and is locked or disengaged from the corresponding locking hole in the safe body as the upper end of the movable base moves up and down; The third locking member is connected to the lower end of the movable base, and is locked with or released from the corresponding locking hole in the safe body as the lower end of the movable base moves up and down.

6. The door opening and closing device according to claim 5, characterized in that: A first rotating bracket is provided between the second locking member and the opening and closing door, and the first rotating bracket is rotatably mounted on the opening and closing door; The first rotating bracket is provided with a first support arm and a second support arm, and the first support arm and the second support arm are arranged at an angle; The first arm is movably connected to the upper end of the movable seat and swings along with the upper end of the movable seat moving up and down; The second arm is movably connected to the second locking member, and the second arm swings along with the swing of the first arm, and drives the second locking member to lock or disengage from the corresponding locking hole in the safe body; or, A second rotating bracket is provided between the third locking member and the opening and closing door, and the second rotating bracket is rotatably mounted on the opening and closing door; The second rotating bracket is provided with a third support arm and a fourth support arm, and the third support arm and the fourth support arm are arranged at an angle; The third arm is movably connected to the lower end of the movable seat and swings along with the up and down movement of the lower end of the movable seat; The fourth arm is movably connected to the third locking member. The fourth arm swings along with the swing of the third arm and drives the third locking member to lock or disengage from the corresponding locking hole in the safe body.

7. The door opening and closing device according to claim 1, characterized in that: A connecting rod is provided between the pressing member and the moving seat, and the connecting rod is swingably connected to the opening and closing door; two ends of the connecting rod are respectively connected to the pressing member and the moving seat, and the connecting rod drives the moving seat to move as the pressing member is pressed.

8. The door opening and closing device according to claim 1, characterized in that: The opening and closing door device further comprises an abutment rod, which is telescopically connected to the opening and closing door and telescopes in the front-rear direction; When the abutment rod extends out of the opening and closing door, one end of the abutment rod is exposed to the outside of the opening and closing door and can contact the inner wall of the safe body; When the abutting rod contacts the inner side wall of the safe body, the abutting rod will be subjected to the force of the inner side wall of the safe body.

9. The door opening and closing device according to claim 8, characterized in that: The abutment rod is connected to the moving seat; A first elastic member is provided between the abutment rod and the opening and closing door, the first elastic member is arranged in the front-to-back direction and elastically contacts the abutment rod and the opening and closing door; A second elastic member is provided between the moving seat and the opening and closing door. The second elastic member is arranged along the front-to-back direction and elastically contacts the moving seat and the opening and closing door.

10. A safe, characterized in that: It comprises a door opening and closing device as described in any one of claims 1 to 9.

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