A sealed box with locking mechanism

Abstract

The application relates to a sealed box body with a locking mechanism, which comprises a box body, a door body connected with the box body, a connecting rod assembly and a plurality of first hooks corresponding to the number of locking areas, a plurality of locking areas are formed between the box body and the door body, a plurality of limiting structures are arranged in each locking area, and a part of the plurality of limiting structures are arranged on the box body and the other part is arranged on the door body; the connecting rod assembly is hinged to the box body; the plurality of first hooks are fixed to one end of the connecting rod assembly and are respectively located in each locking area, and a locking position is arranged on the first hook; the first hook is configured to: when one end of the connecting rod assembly moves in a locking direction, the plurality of limiting structures of each locking area are clamped on the corresponding locking position, and the door body is locked on the box body; when one end of the connecting rod assembly moves in an unlocking direction, the plurality of limiting structures of each locking area are away from the corresponding locking position, and the door body is unlocked from the box body. The application can simultaneously lock and unlock a plurality of locking areas.

Description

Technical Field

[0001] This application relates to the field of outdoor communication equipment, and in particular to a sealed enclosure with a locking mechanism. Background Technology

[0002] To meet the requirements for sealing the enclosure, a sealing rubber is installed between the door panel and the enclosure. When the latch locks the door panel and the enclosure, the tension of the sealing rubber will cause the door panel to deform to a certain extent and become arc-shaped. To solve this problem, multiple screws are used to pre-tighten at multiple points when the door panel is closed. However, this method makes the installation and disassembly of the door panel less efficient. Summary of the Invention

[0003] This application provides a sealed enclosure with a locking mechanism, which can solve the problem that the method of using multiple screws for multi-point simultaneous pre-tightening in related technologies results in low efficiency of door panel installation and disassembly.

[0004] This application provides a sealed enclosure with a locking mechanism, comprising: an enclosure and a door connected to the enclosure, a linkage assembly, and a plurality of first locking hooks corresponding to the number of locking areas. Multiple locking areas are formed between the enclosure and the door, each locking area having multiple limiting structures, some of which are located on the enclosure and others on the door. The linkage assembly is hinged to the enclosure. Multiple first locking hooks are fixed to one end of the linkage assembly and are located within each locking area, each first locking hook having a locking position. The first locking hooks are configured such that: when one end of the linkage assembly moves along the locking direction, and the multiple limiting structures of each locking area engage with their corresponding locking positions, the door is locked to the enclosure; when one end of the linkage assembly moves along the unlocking direction, and the multiple limiting structures of each locking area disengage from their corresponding locking positions, the door is unlocked from the enclosure.

[0005] In some embodiments, the linkage assembly includes: a first linkage, a fourth linkage, and a third linkage, wherein the first linkage passes through a plurality of locking areas and the first locking hook is fixed to the first linkage; the fourth linkage is hinged to the housing; one end of the third linkage is hinged to the fourth linkage, and the other end is hinged to the first linkage via a second linkage.

[0006] In some embodiments, the linkage assembly includes: a first linkage, a fourth linkage, and a third linkage, wherein the first linkage passes through a plurality of locking areas, and a first locking hook is fixed to the first linkage; the fourth linkage is hinged to the housing; and one end of the third linkage is hinged to the fourth linkage, and the other end is slidably connected to the first linkage.

[0007] In some embodiments, the sealed enclosure further includes a second locking hook disposed on the door, the second locking hook having a slot; the linkage assembly further includes a connecting rod, the connecting rod being fixed to a third linkage; the connecting rod is configured such that: when one end of the linkage assembly moves along the locking direction, and the connecting rod engages in the slot, the other end of the linkage assembly continues to move along the locking direction, and when both the limiting structure on the enclosure and the limiting structure on the door are engaged in the locking position, the door is locked to the enclosure; when one end of the linkage assembly moves along the unlocking direction, and the connecting rod leaves the slot, the other end of the linkage assembly continues to move along the unlocking direction, and when both the limiting structure on the enclosure and the limiting structure on the door leave the locking position, the door is unlocked from the enclosure.

[0008] In some embodiments, a connecting seat is provided on the housing, and the fourth connecting rod is hinged to the connecting seat.

[0009] In some embodiments, a stop seat is provided on the housing, and when the door is locked onto the housing, the fourth link is engaged with the stop seat.

[0010] In some embodiments, when the door is closed, one end of the linkage assembly is disposed between the limiting structure located on the housing and the limiting structure located on the door;

[0011] The first locking hook includes two locking rods, which are respectively connected to both sides of one end of the connecting rod assembly. The locking rods have grooves, and the grooves and one end of the connecting rod assembly form a locking position.

[0012] The limiting structure includes a locking post.

[0013] In some embodiments, the locking rod end is provided with a guide portion, the width of which gradually narrows along the locking direction.

[0014] In some embodiments, the locking area includes a limiting groove formed on the door and the box, and the first locking hook is slidably connected inside the limiting groove.

[0015] In some embodiments, the housing is provided with a slide rail through which multiple locking areas are provided, one end of the connecting rod assembly is slidably connected to the inside of the slide rail, and the width of the locking area is greater than the width of the slide rail.

[0016] The beneficial effects of the technical solutions provided in this application include:

[0017] This application provides a sealed box with a locking mechanism. Multiple locking areas are set between the box and the door, and multiple first locking hooks are correspondingly set on the linkage assembly. When the linkage assembly moves, it can simultaneously drive multiple first locking hooks to move, so that the limiting structures at different positions on the box and the door are engaged with or disengaged from the locking positions of the first locking hooks. Multiple locking areas can be self-locked and unlocked in one operation, which is convenient and solves the problem of insufficient preload when the door size is large. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the box and door provided in an embodiment of this application;

[0021] Figure 3 A schematic diagram of a linkage assembly provided in an embodiment of this application (configuration method 1);

[0022] Figure 4 A schematic diagram of the linkage assembly (setting method one) and the door body provided in the embodiments of this application;

[0023] Figure 5 A schematic diagram of the key location 2 provided in the embodiments of this application;

[0024] Figure 6 A schematic diagram of the key location 3 provided in the embodiments of this application;

[0025] Figure 7 A schematic diagram of the key location 4 provided in the embodiments of this application;

[0026] Figure 8 A schematic diagram of the linkage assembly provided in the embodiments of this application (configuration method 2).

[0027] In the diagram: 1. Box body; 10. Connecting seat; 11. Stop seat; 2. Door body; 3. Slide rail; 4. Locking post; 5. Linkage assembly; 50. First link; 51. Second link; 52. Third link; 53. Fourth link; 54. Handle; 55. Connecting rod; 6. First locking hook; 60. Groove; 61. Guide part; 7. Second locking hook; 70. Locking groove; 8. Limiting groove. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0029] This application provides a sealed enclosure with a locking mechanism, which solves the problem in related technologies where the method of using multiple screws for multi-point simultaneous pre-tightening results in low efficiency of door panel installation and disassembly.

[0030] See Figures 1 to 8 This application provides a sealed box with a locking mechanism, comprising: a box 1, a door 2 connected to the box 1, a connecting rod assembly 5, and a plurality of first locking hooks 6 corresponding to the number of locking areas. Multiple locking areas are formed between the box 1 and the door 2, and are located on the sides of the box 1 and the door 2. Each locking area has multiple limiting structures, some of which are located on the box 1 and others on the door 2. The connecting rod assembly 5 is hinged to the box 1. Multiple first locking hooks 6 are fixed to one end of the connecting rod assembly 5 and are located within each locking area. Each first locking hook 6 has a locking position. The first locking hooks 6 are configured such that: when one end of the connecting rod assembly 5 moves along the locking direction, and the multiple limiting structures of each locking area are engaged with their corresponding locking positions, the door 2 is locked to the box 1; when one end of the connecting rod assembly 5 moves along the unlocking direction, and the multiple limiting structures of each locking area leave their corresponding locking positions, the door 2 is unlocked from the box 1.

[0031] In this application, multiple locking areas are provided between the housing 1 and the door 2, and multiple first locking hooks 6 are correspondingly provided on the connecting rod assembly 5. When the connecting rod assembly 5 moves, it can simultaneously drive multiple first locking hooks 6 to move, so that the limiting structures at different positions on the housing 1 and the door 2 are engaged with or disengaged from the locking positions of the first locking hooks 6. One operation can self-lock and unlock multiple locking areas, which is convenient to operate and solves the problem of insufficient pre-tightening force when the door 2 is large.

[0032] See Figure 1 In this embodiment, the locking direction is opposite to the unlocking direction; and the locking area is spaced apart along the height direction of the box 1; generally, whether the door 2 is locked to the box 1 or the door 2 is unlocked from the box 1, the first locking hook 6 is connected to the box 1 through the connecting rod assembly 5 so as to unlock or lock later.

[0033] In this application, the linkage assembly 5 can be configured in several ways:

[0034] In some possible embodiments, see Figure 3 and Figure 4 As shown, the linkage assembly 5 includes: a first link 50, a fourth link 53, and a third link 52.

[0035] In this embodiment, the first connecting rod 50 passes through multiple locking areas, and the first locking hook 6 is fixed to the first connecting rod 50. Multiple first locking hooks 6 are fixed to the first connecting rod 50 at intervals. The first connecting rod 50 is located on the side of the housing 1, and its function is to drive the first locking hooks 6 to move along the locking or unlocking direction. In this embodiment, limiting the movement area of ​​the first locking hook 6 to the locking area avoids the first locking hook 6 moving too far when unlocking or locking the door 2, thus preventing efficiency issues. The fourth link 53 is hinged to the box body 1: In this embodiment, the fourth link 53 is hinged to the bottom of the box body 1. Furthermore, the box body 1 is provided with a connecting seat 10, and the fourth link 53 is hinged to the connecting seat 10. The box body 1 is provided with a stop seat 11. When the door 2 is locked to the box body 1, the fourth link 53 is in contact with the stop seat 11. When the fourth link 53 cannot move upward against the bottom of the stop seat 11, the first locking hook 6 also cannot move in the locking direction. One end of the third link 52 is hinged to the fourth link 53, and the other end is hinged to the first link 50 via the second link 51. In this embodiment, the third link 52 is also located at the bottom of the box 1. After one end of the third link 52 is hinged to the fourth link 53, a handle 54 is fixed at the end. The other end of the third link 52 is hinged to the second link 51, and one end of the second link 51 is hinged to the first link 50. The second link 51 is also located on one side of the box 1.

[0036] In this embodiment, when the handle 54 is rotated clockwise, the third link 52 is rotated clockwise. At this time, the part of the fourth link 53 connected to the third link 52 moves away from the bottom of the box 1. After the third link 52 moves down, it drives the first link 50 to move down through the second link 51, thereby realizing the unlocking operation of one end of the link assembly 5 along the unlocking direction, and the multiple limiting structures of each locking area leave the corresponding locking position.

[0037] Conversely, when the handle 54 is rotated counterclockwise, the third link 52 is rotated counterclockwise. At this time, the part of the fourth link 53 connected to the third link 52 moves closer to the bottom of the housing 1. After the third link 52 moves upward, it drives the first link 50 to move upward through the second link 51, thereby realizing the movement of one end of the link assembly 5 along the locking direction. The multiple limiting structures in each locking area are engaged with the corresponding locking positions for locking operations.

[0038] In some other possible embodiments, see Figure 8As shown, the linkage assembly 5 includes a first linkage 50, a fourth linkage 53, and a third linkage 52. In this embodiment, the first linkage 50 passes through multiple locking areas, and a first locking hook 6 is fixed to the first linkage 50; the fourth linkage 53 is hinged to the housing 1; one end of the third linkage 52 is hinged to the fourth linkage 53, and the other end is slidably connected to the first linkage 50.

[0039] Multiple first locking hooks 6 are fixed at intervals to the first connecting rod 50, which is located on the side of the housing 1. The function of the first connecting rod 50 is to drive the first locking hooks 6 to move in the locking or unlocking direction. In this embodiment, the movement area of ​​the first locking hooks 6 is limited to the locking area, which can prevent the first locking hooks 6 from moving too far when unlocking or locking the door 2, thus affecting efficiency. The fourth connecting rod 53 is hinged to the bottom of the housing 1. Furthermore, the housing 1 is provided with a connecting seat 10, and the fourth connecting rod 53 is hinged to the connecting seat 10. The housing 1 is provided with a stop seat 11. When the door 2 is locked onto the housing 1, the fourth connecting rod 53 is in contact with the stop seat 11. When the fourth connecting rod 53 cannot move upward against the bottom of the stop seat 11, the first locking hooks 6 also cannot move in the locking direction. The third link 52 is also located at the bottom of the housing 1. One end of the third link 52 is hinged to the fourth link 53, and a handle 54 is fixed at the end. The other end of the third link 52 is provided with a sliding groove, which is directly slidably connected to the first link 50.

[0040] In this embodiment, when the handle 54 is rotated clockwise, the third link 52 is rotated clockwise. At this time, the fourth link 53, which is connected to the third link 52, moves away from the bottom of the housing 1. After the third link 52 moves down, it directly drives the first link 50 to move down. At this time, one end of the first link 50 will also slide in the groove of the third link 52, thereby realizing the unlocking operation of one end of the link assembly 5 moving along the unlocking direction and the multiple limiting structures of each locking area leaving the corresponding locking position.

[0041] Conversely, when the handle 54 is turned counterclockwise, it drives the third link 52 to rotate counterclockwise. At this time, the fourth link 53, which is connected to the third link 52, moves towards the side closer to the bottom of the housing 1. After the third link 52 moves upward, it directly drives the first link 50 to move upward. At this time, one end of the first link 50 will also slide in the groove of the third link 52, thereby realizing the movement of one end of the link assembly 5 along the locking direction. The multiple limiting structures of each locking area are engaged with the corresponding locking positions for locking operations.

[0042] The above embodiments are merely various possible implementations of the embodiments of this application, and the embodiments of this application are not limited thereto.

[0043] In this application, when the door 2 is configured to be hinged to the housing 1 on one side and open and close on the other side, a first link 50 and a second link 51 are provided only on one side of the third link 52, and a locking area and a first locking hook 6 are provided only on the side of the door 2 that is open and close. When the door 2 is configured to separate directly from the housing 1 when the door 2 is opened, a first link 50 and a second link 51 are provided on both sides of the third link 52, and a locking area and a first locking hook 6 are provided on both sides of the door 2.

[0044] Based on the above embodiments, in this embodiment, the housing 1 is provided with a slide rail 3 through which multiple locking areas pass. One end of the connecting rod assembly 5 is slidably connected to the inside of the slide rail 3, and the width of the locking area is greater than the width of the slide rail 3. In this embodiment, both the housing 1 and the door 2 are provided with locking areas, and the slide rail 3 is provided on the housing 1 and passes through the locking areas on the housing 1. The first connecting rod 50 is slidably connected to the inside of the slide rail 3. The slide rail 3 can restrict the sliding direction of the first connecting rod 50, so that it can only move in the locking direction or the unlocking direction.

[0045] Furthermore, the locking area includes a limiting groove 8 formed on the door body 2 and the box body 1, and the first locking hook 6 is slidably connected inside the limiting groove 8. The limiting groove 8 is a recessed structure formed on the door body 2 and the box body 1, recessed towards the center of the door body 2 or the box body 1. The limiting groove 8 allows the first locking hook 6 to slide, thus limiting the movement of the first locking hook 6. Since the slide rail 3 passes through the locking area of ​​the box body 1, when part of the first connecting rod 50 slides within the slide rail 3, another part also slides within the limiting groove 8.

[0046] Both the housing 1 and the door 2 are provided with limiting grooves 8 and are fixedly connected to limiting structures. Therefore, when the door 2 is closed, one end of the connecting rod assembly 5, that is, the first connecting rod 50, is located between the limiting structure on the housing 1 and the limiting structure on the door 2. In this embodiment, the limiting structure includes a locking post 4 fixed inside the limiting groove 8.

[0047] Since the first locking hook 6 includes two locking rods, which are respectively connected to both sides of one end of the connecting rod assembly 5, a channel is formed between the locking rods and the first connecting rod 50. When the locking rods slide with the first connecting rod 50, the locking pin 4 can pass into or out of the channel. Furthermore, a guide portion 61 is provided at the end of the locking rod. The width of the guide portion 61 gradually narrows along the locking direction, that is, when the locking pin 4 enters the channel, the width of the channel will narrow. A groove 60 is provided on the locking rod. The groove 60 is located at the narrowest position of the channel. In this embodiment, the groove 60 is structurally adjusted according to the shape of the locking pin 4: when the locking pin 4 is a cylindrical structure, the groove 60 is an arc-shaped groove; when the locking pin 4 is a cubic structure, the groove 60 is a square groove. This forms a locking position between the groove 60 and one end of the connecting rod assembly 5. Therefore, when the locking pin 4 enters the channel and moves to the groove 60, the groove 60 and the first connecting rod 50 cooperate to clamp and fix the locking pin 4. The locking rods on both sides of the first connecting rod 50 are symmetrically arranged. When the locking pins 4 on the door body 2 and the locking pins 4 on the box body 1 in the same locking area are both engaged in the corresponding grooves 60, the door body 2 and the box body 1 are locked.

[0048] Based on the above embodiments, in this embodiment, the sealed box 1 further includes a second locking hook 7, which is disposed on the door 2 and has a slot 70. In this embodiment, the second locking hook 7 is fixedly connected to the door 2, and the second locking hook 7 has an internally recessed slot 70. The connecting rod assembly 5 also includes a connecting rod 55, which is fixed to the third connecting rod 52. When the first connecting rod 50 and the second connecting rod 51 are provided on both sides of the third connecting rod 52, and locking areas and the first locking hook 6 are provided on both sides of the door 2, the connecting rod 55 connects the third connecting rods 52 on both sides.

[0049] The connecting rod 55 is configured such that: when one end of the connecting rod assembly 5 moves in the locking direction and the connecting rod 55 is engaged in the slot 70, the other end of the connecting rod assembly 5 continues to move in the locking direction, and when both the limiting structure on the housing 1 and the limiting structure on the door 2 are engaged in the locking position, the door 2 is locked to the housing 1; when one end of the connecting rod assembly 5 moves in the unlocking direction and the connecting rod 55 leaves the slot 70, the other end of the connecting rod assembly 5 continues to move in the unlocking direction, and when both the limiting structure on the housing 1 and the limiting structure on the door 2 leave the locking position, the door 2 is unlocked from the housing 1.

[0050] In this application, a second link 51 is added to the general two-bar linkage mechanism and connected to the first link 50. By precisely setting the length of the fourth link 53 and the connection point between the second link 51 and the third link 52, the movement position of the first link 50 can be precisely controlled. By setting the connecting rod 55, it can be ensured that the second locking hook 7 has completed the pre-positioning before the first locking hook 6 and the locking post 4 complete the locking operation, so as not to cause the mechanism to fail or jam.

[0051] In this structure, the locking mechanism has several key positions during its movement when unlocking:

[0052] Key location 1: See Figure 3 As shown, the fourth link 53 abuts against the stop seat 11, with the end in contact with the stop seat 11 tilted upwards, forming a first set angle with the bottom of the housing 1. This is the starting position of the entire locking mechanism. At this time, the fourth link 53 abuts against the stop seat 11 and cannot rotate upwards further. Simultaneously, the handle 54 is in a self-locking state and does not move unless acted upon by external force. The first locking hook 6 and the second locking hook 7 are both in a self-locking state, maintaining preload. At this time, the second locking hook 7 has a set gap X1mm between it and the bottom of the door panel.

[0053] Key location 2: See Figure 5 As shown, the angle between the fourth link 53 and the bottom of the housing 1 is 0 degrees. The first set angle is less than 0 degrees: after rotating the fourth link 53 clockwise by the first set angle, it is in a horizontal state. When the fourth link 53 rotates from the first set angle to 0 degrees, the second locking hook 7 moves downwards by X1mm within the slot 70, reaching the bottom of the door 2. The elastic force of the rubber sealing the housing 1 reaches its maximum. Simultaneously, the first locking hook 6 and the first link 50 move downwards by Y1mm, maximizing their interference with the housing 1 and the door 2. The 0-degree angle between the fourth link 53 and the bottom of the housing 1 represents the peak resistance of the handle 54, which is the self-locking critical point.

[0054] Key location 3: See Figure 6 As shown, the angle between the fourth link 53 and the bottom of the box 1 is the second set angle, which is greater than 0 degrees. The fourth link 53 continues to rotate clockwise until the angle with the bottom of the box 1 is the second set angle. The second locking hook 7 moves to the left by Z1mm relative to its starting position within the slot 70. The first locking hook 6 and the second link 51 move downwards by Y2mm. At this point, the first locking hook 6 is disengaged from the locking pin 4, but the second locking hook 7 is not disengaged from the slot 70. Based on this, the handle 54 continues to rotate until the angle between the fourth link 53 and the bottom of the box 1 is the third set angle, which is greater than the second set angle. The fourth link 53 continues to rotate downwards until the angle with the bottom of the box 1 is the third set angle. The second locking hook 7 moves to the left by Z2mm relative to its starting position, and the second locking hook 7 is completely disengaged. After this state, the fourth link 53 no longer rotates clockwise, and the second locking hook 7 begins to move downwards.

[0055] Key location 4: See Figure 7As shown, the angle between the fourth link 53 and the bottom of the box 1 is maintained at approximately the third preset angle: Pressing down on the second locking hook 7 causes the angle between the third link 52 and the fourth link 53 to reach the fourth preset angle. Since the first locking hook 6 is restricted by the bottom of the limiting groove 8, this state can be maintained. Unlocking is complete, and the door can be opened. The action of locking the door 2 is the reverse sequence.

[0056] In summary, this application utilizes a locking mechanism with multi-point simultaneous pre-tightening to perform multi-point simultaneous pre-tightening when the door 2 is closed, thereby solving the problem of door 2 deformation. The locking mechanism of this application has a quick disassembly function, which can unlock and open the door 2 by hand, thus solving the efficiency problem. In addition, this locking mechanism can maintain the pre-tightening force for a long time, solving the problem of the sealing reliability of the door 2.

[0057] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0058] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A sealed enclosure with a locking mechanism, characterized in that, It includes: The box (1) and the door (2) connected to the box (1) form multiple locking areas between the box (1) and the door (2). Each locking area is provided with multiple limiting structures. Among the multiple limiting structures, one part is provided on the box (1) and the other part is provided on the door (2). Linkage assembly (5), which is hinged to housing (1); Multiple first locking hooks (6) corresponding to the number of locking areas are fixed to one end of the connecting rod assembly (5) and are located in each locking area respectively. The first locking hooks (6) are provided with locking positions. The first locking hook (6) is configured such that when one end of the linkage assembly (5) moves along the locking direction and multiple limiting structures in each locking area are engaged in the corresponding locking position, the door (2) is locked onto the box (1); when one end of the linkage assembly (5) moves along the unlocking direction and multiple limiting structures in each locking area leave the corresponding locking position, the door (2) is unlocked from the box (1). The link assembly (5) includes: The first link (50) has multiple locking areas, and the first locking hook (6) is fixed to the first link (50); The fourth link (53) is hinged to the housing (1); The third link (52) is hinged at one end to the fourth link (53) and at the other end to the first link (50) via the second link (51); The sealed box (1) also includes a second locking hook (7), which is disposed on the door (2) and has a slot (70). The linkage assembly (5) further includes a connecting rod (55), which is fixed to the third link (52); The connecting rod (55) is configured such that: when one end of the connecting rod assembly (5) moves along the locking direction and the connecting rod (55) is engaged in the slot (70), the other end of the connecting rod assembly (5) continues to move along the locking direction, and when the limiting structure on the box (1) and the limiting structure on the door (2) are both engaged in the locking position, the door (2) is locked on the box (1); when one end of the connecting rod assembly (5) moves along the unlocking direction and the connecting rod (55) leaves the slot (70), the other end of the connecting rod assembly (5) continues to move along the unlocking direction, and when the limiting structure on the box (1) and the limiting structure on the door (2) leave the locking position, the door (2) is unlocked from the box (1).

2. The sealed housing with a locking mechanism as described in claim 1, characterized in that: A connecting seat (10) is provided on the box body (1), and the fourth connecting rod (53) is hinged to the connecting seat (10).

3. The sealed housing with a locking mechanism as described in claim 1, characterized in that: The box (1) is provided with a stop seat (11). When the door (2) is locked on the box (1), the fourth link (53) is in contact with the stop seat (11).

4. The sealed housing with a locking mechanism as described in claim 1, characterized in that: When the door (2) is closed, one end of the connecting rod assembly (5) is positioned between the limiting structure located on the box (1) and the limiting structure located on the door (2); The first locking hook (6) includes two locking rods, which are respectively connected to both sides of one end of the connecting rod assembly (5). The locking rods are provided with grooves (60), and the grooves (60) and one end of the connecting rod assembly (5) form a locking position. The limiting structure includes a locking post (4).

5. The sealed housing with a locking mechanism as described in claim 4, characterized in that: The locking rod end is provided with a guide portion (61), the width of which gradually narrows along the locking direction.

6. The sealed housing with a locking mechanism as described in claim 1, characterized in that: The locking area includes a limiting groove (8) opened on the door (2) and the box (1), and the first locking hook (6) is slidably connected inside the limiting groove (8).

7. The sealed housing with a locking mechanism as described in claim 6, characterized in that: The housing (1) is provided with a slide rail (3) through which multiple locking areas are provided. One end of the connecting rod assembly (5) is slidably connected to the inside of the slide rail (3). The width of the locking area is greater than the width of the slide rail (3).

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