Locking mechanism and door device

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a locking mechanism and a door device. The door device comprises a door body and a locking mechanism, a mounting hole is formed in the door body, the mounting hole comprises a sliding long hole and a locking hole, and the locking mechanism comprises a baffle which can slide relative to the door body in the first direction so as to shield or avoid an operation hole; one end of the handle assembly is connected with the baffle, and the other end penetrates through the mounting hole and is provided with a padlock part; the locking piece can move to a locking position or an unlocking position relative to the handle assembly, and at the locking position, the locking piece is matched with the locking hole in a first state, and the handle assembly is locked in the locking hole; at the unlocking position, the locking piece is matched with the locking hole in a second state, so that the handle assembly can move into the sliding long hole; and the elastic piece is configured to enable the locking piece to move to the unlocking position. According to the locking mechanism, the operation steps of an operator when the operator needs to work through the operation hole can be reduced, and the operation convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a locking mechanism and door device. Background Technology

[0002] Ring main units and other electrical equipment cabinets consist of a cabinet body and a door. The door has an operating port to allow operation of the internal structure without opening the door, thus improving operational convenience. To meet the IP4X protection level requirements stipulated by the power industry and to prevent worker misoperation, a locking mechanism is required around the operating port.

[0003] In related technologies, the cabinet door is also provided with a mounting hole for installing a locking mechanism. This mounting hole includes a connected sliding elongated hole and a locking round hole, the diameter of which is larger than the width of the sliding elongated hole. The locking mechanism includes a baffle, a handle, and a locking element. The baffle is located on the inside of the cabinet door and is used to block the operating hole and the mounting hole. One end of the handle is connected to the baffle, and the other end extends through the outside of the mounting hole, allowing the handle to move along the mounting hole. The locking element is fitted onto the handle, with one end extending into the mounting hole. The locking element can rotate relative to the handle. When the locking element rotates to the first position, the larger side wall of the locking element is opposite to the width direction of the sliding elongated hole, so it cannot enter the sliding elongated hole. At this time, the position of the locking element is locked by an external padlock, thus locking the baffle in the position blocking the operating hole. When the locking element rotates to the second position, its smaller side wall is opposite to the width direction of the sliding elongated hole. At this time, the handle and the locking element can move together from the locking round hole into the sliding elongated hole, thereby driving the stop edge to move to a position that avoids the operating hole.

[0004] Based on the above locking mechanism, when an operator needs to work through the operating hole, at least the following steps are required: open and remove the external padlock; rotate the locking element from the first position to the second position; push the locking element and handle into the sliding elongated hole. The whole process involves many steps and is not convenient to operate. Utility Model Content

[0005] One objective of this invention is to provide a locking mechanism that reduces the number of steps an operator needs to take when working through an operating hole, thereby improving operational convenience.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A locking mechanism is provided for locking an operating hole on a door body. The door body has a mounting hole, which includes a sliding elongated hole and a locking hole connected along a first direction. The locking mechanism includes:

[0008] A baffle that can slide relative to the door body along the first direction to block or avoid the operating hole;

[0009] A handle assembly, the first end of which is connected to the baffle, and the second end of which passes through the mounting hole, and a padlock is provided on the second end of the handle assembly;

[0010] A locking element is movably connected to the handle assembly and is movable relative to the handle assembly to a locked position or an unlocked position. In the locked position, the locking element engages with the locking hole in a first state, locking the handle assembly within the locking hole, with the padlock portion exposed. In the unlocked position, the locking element engages with the locking hole in a second state, allowing the handle assembly to move into the sliding elongated hole.

[0011] An elastic element is connected to both the handle assembly and the locking element, and the elastic element is configured to move the locking element to the unlocked position.

[0012] As an alternative, the locking member is sleeved on the handle assembly and can move along the axial direction of the handle assembly. The maximum width of the locking member in the second direction is greater than the width of the sliding elongated hole in the second direction. The second direction is perpendicular to the first direction. The first state is that the locking member is inserted into the locking hole, and the second state is that the locking member is removed from the locking hole.

[0013] As an optional solution, the handle assembly includes a first fixing member and a second fixing member. The first fixing member includes a main body and a stop. One end of the second fixing member is connected to the main body and the other end is connected to the baffle. The cross-sectional area of ​​the second fixing member is larger than the cross-sectional area of ​​the main body.

[0014] The locking member includes a cylindrical part and an end plate part. The cylindrical part is slidably engaged with the second fixing member. The stop part can stop the end plate part. The elastic member is sleeved on the main body part, and its two ends abut against the inner wall of the end plate part and the second fixing member, respectively.

[0015] As an optional solution, the handle assembly further includes a fastener, which sequentially passes through the baffle and the second fixing member and is threadedly connected to the first fixing member; or

[0016] The second fixing member is welded to the baffle, and the first fixing member is threaded to the second fixing member.

[0017] As an alternative, in the unlocked position, the locking element obstructs the padlock portion.

[0018] As an optional solution, the locking mechanism further includes a support assembly configured to connect with the door body, the support assembly forming a slide extending in a first direction, or the support assembly and the door body enclosing each other to form a slide extending in a first direction, the baffle being slidably disposed on the slide.

[0019] As an optional solution, the sidewall of the slide includes a base portion and an elastically deformable portion, the elastically deformable portion being able to elastically deform relative to the base portion, and one of the elastically deformable portion and the baffle having a groove and the other having a protrusion.

[0020] When the handle assembly is located in the locking hole, the protrusion engages with the slot to lock the position of the baffle. When the handle assembly leaves the locking hole, the elastic deformation portion deforms to separate the protrusion from the slot.

[0021] As an optional solution, the support assembly includes a guide rail and a pressure plate. The guide rail is configured to connect to the door body, and the pressure plate is disposed on the side of the guide rail away from the door body and surrounds the guide rail to form the slide. The pressure plate has a notch, and the area surrounded by the notch is the elastic deformation portion.

[0022] Another objective of this invention is to provide a door device that, by employing the aforementioned locking mechanism, improves the ease of use for operators.

[0023] To achieve this objective, the present invention adopts the following technical solution:

[0024] A door device includes a door body and the locking mechanism. The door body is provided with an operating hole and a mounting hole. The mounting hole includes a sliding elongated hole and a locking hole connected along a first direction. When the handle assembly is located in the locking hole, the baffle blocks the operating hole.

[0025] As an optional solution, the door body is provided with two operating holes. The mounting holes include three locking holes and two sliding elongated holes. The locking holes and the sliding elongated holes are alternately arranged along the first direction. The three locking holes are defined as the first locking hole, the second locking hole, and the third locking hole, respectively.

[0026] When the handle assembly is located in the first locking hole, the baffle only blocks one of the two operating holes;

[0027] When the handle assembly is located in the second locking hole, the baffle blocks both of the operation holes;

[0028] When the handle assembly is located in the third locking hole, the baffle only blocks the other of the two operating holes.

[0029] The beneficial effects of this utility model are:

[0030] The locking mechanism of this invention allows the handle assembly to move into the sliding elongated hole when the locking member is in the unlocked position. This causes the baffle to move to a position that avoids the operating hole, facilitating the operator's access to the door's internal structure through the operating hole. When the locking member moves to the locked position relative to the handle assembly, it engages with the locking hole in a first state, locking the handle assembly within the locking hole. Consequently, the baffle is locked in a position that blocks the operating hole. At this point, the external padlock engages with the padlock part to lock the position of the locking member relative to the handle assembly, thus locking the positions of both the handle assembly and the baffle. When the operator needs to access the operating hole, the padlock is first removed. The elastic element then automatically moves the locking member to the unlocked position. The operator then simply pushes the handle assembly into the sliding elongated hole, eliminating the need for manual switching of the locking member's position. This reduces the number of steps required for operation through the operating hole and improves operational convenience.

[0031] The door device of this utility model, by adopting the above-mentioned locking mechanism, can improve the convenience of operation for operators. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the outer side of the door device provided in a specific embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of the inner structure of the door device provided in a specific embodiment of the present utility model;

[0034] Figure 3 This is a cross-sectional view of the door device provided in a specific embodiment of the present invention when the locking element is in the unlocked position;

[0035] Figure 4 This is a cross-sectional view of the door device provided in a specific embodiment of the present invention when the locking element is in the locked position;

[0036] Figure 5 This is an exploded view of a portion of the locking mechanism provided in a specific embodiment of this utility model;

[0037] Figure 6 This is an exploded view of a portion of the structure of the door device provided in a specific embodiment of this utility model.

[0038] In the picture:

[0039] 10. Door body; 11. Operating hole; 12. Mounting hole; 121. Sliding elongated hole; 122. Locking hole; 122a. First locking hole; 122b. Second locking hole; 122c. Third locking hole;

[0040] 20. Locking mechanism; 21. Support assembly; 211. Guide rail; 2111. Plate body; 2112. Protrusion; 2113. First clearance hole; 2114. Third clearance hole; 212. Pressure plate; 2121. Elastic deformation part; 2122. Protrusion; 2123. Notch; 2124. Second clearance hole; 2125. Fourth clearance hole; 22. Baffle; 221. Slot; 222. Through hole; 23. Handle assembly; 231. First fixing member; 2311. Main body; 2312. Stop; 2313. Padlock; 232. Second fixing member; 233. Fastener; 24. Locking member; 241. Cylinder body; 242. End plate; 25. Elastic member;

[0041] 30. Padlock. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] like Figures 1-2 As shown, this embodiment provides a locking mechanism and a door device, wherein the door device can be used in electrical equipment cabinets such as ring main units. The door device includes a door body 10 and a locking mechanism 20. The door body 10 is provided with an operating hole 11 and a mounting hole 12. The operating hole 11 allows operators to operate the internal structure of the equipment cabinet without opening the door body 10. The mounting hole 12 is used to install the locking mechanism 20. When operators need to work through the operating hole 11, they open the operating hole 11 by operating the locking mechanism 20. When they do not need to work through the operating hole 11, the locking mechanism 20 blocks the operating hole 11 and the mounting hole 12, thereby enabling the equipment cabinet to meet the required protection level and preventing accidental operation by non-professionals.

[0047] like Figures 1-4As shown, the mounting hole 12 includes a sliding elongated hole 121 and a locking hole 122 connected along a first direction. In a second direction, the maximum width of the locking hole 122 is greater than the width of the sliding elongated hole 121. In this embodiment, the first direction is vertical and the second direction is horizontal. The locking mechanism 20 includes a support assembly 21, a baffle 22, a handle assembly 23, a locking element 24, and an elastic element 25. The support assembly 21 is installed on the inner side of the door body 10. The support assembly 21 forms a slide extending along the first direction, or the support assembly 21 and the door body 10 together form a slide extending along the first direction. The baffle 22 can slide relative to the door body 10 along the slide. The first end of the handle assembly 23 is connected to the baffle 22, and the second end passes through the mounting hole 12 and extends to the outer side of the door body 10. A padlock portion 2313 is provided on the second end of the handle assembly 23, and the padlock portion 2313 is used to install an external padlock 30. The operator moves the handle assembly 23 within the mounting hole 12 in a first direction, causing the baffle 22 to slide within the slide rail. Specifically, when the handle assembly 23 is located within the locking hole 122, the baffle 22 blocks the operating hole 11. When the handle assembly 23 moves from the operating hole 11 to the sliding elongated hole 121, the baffle 22 gradually moves away from the operating hole 11. The locking member 24 is movably connected to the handle assembly 23 and can move relative to the handle assembly 23 to a locked position or an unlocked position. In the locked position, the locking member 24 engages with the locking hole 122 in a first state, locking the handle assembly 23 within the locking hole 122. In the unlocked position, the locking member 24 engages with the locking hole 122 in a second state, allowing the handle assembly 23 to move into the sliding elongated hole 121. The elastic member 25 is connected to both the handle assembly 23 and the locking member 24, and is configured to move the locking member 24 to the unlocked position.

[0048] The locking mechanism 20 in this embodiment, such as Figure 1 and Figure 3 As shown, when the locking element 24 is in the unlocked position, the handle assembly 23 can move into the sliding elongated hole 121, thereby driving the baffle 22 to move to a position that avoids the operating hole 11, so that the operator can perform operations on the structure inside the door 10 through the operating hole 11; as Figure 4As shown, when the locking member 24 moves to the locked position relative to the handle assembly 23, the locking member 24 engages with the locking hole 122 in a first state, locking the handle assembly 23 within the locking hole 122. Therefore, the baffle 22 is locked in the position blocking the operating hole 11. At this time, the position of the locking member 24 relative to the handle assembly 23 is locked by the external padlock 30 engaging with the padlock part 2313, thus locking the positions of the handle assembly 23 and the baffle 22. When the operator needs to work through the operating hole 11, the padlock 30 is first removed. At this time, the elastic member 25 causes the locking member 24 to automatically move to the unlocked position. The operator then only needs to push the handle assembly 23 into the sliding elongated hole 121, eliminating the need for manual switching of the locking member 24. This reduces the number of steps required when working through the operating hole 11 and improves operational convenience. The door device of this embodiment, by employing the aforementioned locking mechanism 20, enhances the ease of use for the operator.

[0049] like Figure 1 As shown, the door body 10 is provided with two operating holes 11, and the mounting hole 12 includes three locking holes 122 and two sliding elongated holes 121. The locking holes 122 and sliding elongated holes 121 are alternately arranged along a first direction. The three locking holes 122 are defined as the first locking hole 122a, the second locking hole 122b, and the third locking hole 122c. When the handle assembly 23 is located in the first locking hole 122a, the baffle 22 only blocks the upper operating hole 11; when the handle assembly 23 is located in the second locking hole 122b, the baffle 22 blocks both operating holes 11; when the handle assembly 23 is located in the third locking hole 122c, the baffle 22 only blocks the lower operating hole 11. That is to say, in this embodiment, the two operating holes 11 can be blocked or avoided by a single locking device, and the opening and closing of the two operating holes 11 do not interfere with each other, which not only simplifies the structure of the door device but also reduces the cost of the door device.

[0050] In this embodiment, the two operating holes 11 are arranged at intervals along the first direction and are respectively located at both ends of the mounting hole 12 along the first direction. In other embodiments, the arrangement of the two operating holes 11 is not limited to this. It can be made by adjusting the shape of the baffle 22 to ensure that when the operating component is in different locking holes 122, the baffle 22 can block or avoid the corresponding locking hole 122.

[0051] like Figures 3-5 As shown, the locking member 24 is sleeved on the outside of the handle assembly 23 and can move along the axial direction of the handle assembly 23. The maximum width of the locking member 24 in the second direction is greater than the width of the sliding elongated hole 121 in the second direction, and the maximum width of the handle assembly 23 in the second direction is less than the width of the sliding elongated hole 121 in the second direction. Figure 4As shown, in the first state, the locking member 24 is inserted into the locking hole 122. Since the width of the locking member 24 in the second direction is greater than that of the sliding elongated hole 121, the locking member 24 and the handle assembly 23 cannot move from the locking hole 122 into the sliding elongated hole 121 along the first direction. At this time, installing the padlock 30 on the padlock part 2313 can lock the locking member 24 in this position, that is, lock the baffle 22 in the position that blocks the operation hole 11. Figure 3 As shown, the second state is when the locking member 24 exits the locking hole 122, at which time the locking member 24 will no longer block the movement of the handle assembly 23 in the first direction.

[0052] like Figures 3-5 As shown, the handle assembly 23 includes a first fixing member 231 and a second fixing member 232. The first fixing member 231 includes a main body portion 2311 and a stop portion 2312. One end of the second fixing member 232 is connected to the main body portion 2311, and the other end is connected to the baffle 22. The cross-sectional area of ​​the second fixing member 232 is larger than the cross-sectional area of ​​the main body portion 2311. The locking member 24 includes a cylindrical body portion 241 and an end plate portion 242. The cylindrical body portion 241 is slidably engaged with the second fixing member 232. The stop portion 2312 can stop the end plate portion 242. The elastic member 25 is sleeved on the main body portion 2311, and its two ends abut against the inner walls of the second fixing member 232 and the end plate portion 242, respectively. In this embodiment, when the operator pushes the locking member 24 inward toward the door body 10, the elastic member 25 is compressed, and the padlock portion 2313 is exposed, allowing the operator to attach the lock 30. After the operator removes the padlock 30, the elastic member 25 drives the locking member 24 to push along the second fixing member 232 outward toward the door body 10, thereby moving the locking member 24 to the position of exiting the locking hole 122. At this time, the locking member 24 blocks the padlock portion 2313, preventing the operator from accidentally attaching the lock 30. Optionally, in this embodiment, the elastic member 25 is a spring.

[0053] In this embodiment, as Figures 3-6 As shown, the handle assembly 23 also includes a fastener 233, which passes through the baffle 22 and the second fixing member 232 in sequence and is threadedly connected to the first fixing member 231, thereby fixing the handle assembly 23 to the baffle 22. This design is simple and easy to install. Figure 5 and Figure 6 As shown, in this embodiment, the fastener 233 can be a bolt, the baffle 22 is provided with a through hole 222, the second fixing member 232 is constructed as a cylindrical structure, and the main body 2311 of the first fixing member 231 is provided with a threaded hole on the end face facing the second fixing member 232. During installation, the elastic member 25 and the locking member 24 are first sleeved on the main body 2311, and then the fastener 233 is sequentially passed through the through hole 222, the second fixing member 232, and threadedly connected to the first fixing member 231.

[0054] In some embodiments (not shown), the second fixing member is welded to the baffle, and the first fixing member is threaded to the second fixing member. During installation, the second fixing member is first welded to the baffle, then the elastic member and locking member are fitted onto the main body, and finally the main body is threaded to the second fixing member.

[0055] In this embodiment, as Figure 6 As shown, the support assembly 21 includes a guide rail 211 and a pressure plate 212. The guide rail 211 is connected to the door body 10, and the pressure plate 212 is disposed on the side of the guide rail 211 away from the door body 10 and forms a slide rail around the guide rail 211. That is, the support assembly 21 itself forms a slide rail for the baffle 22 to slide. Specifically, the guide rail 211 includes a plate body 2111 and two protrusions 2112. The plate body 2111 is connected to the door body 10, and the two protrusions 2112 are both disposed on the side of the plate body 2111 away from the door body 10 and are arranged opposite to each other. The pressure plate 212 is fitted and connected to the protrusions 2112 so that a slide rail is formed between the pressure plate 212 and the plate body 2111. In this embodiment, the plate body 2111 is provided with a first clearance hole 2113 and a third clearance hole 2114, and the pressure plate 212 is provided with a second clearance hole 2124 and a fourth clearance hole 2125. The first clearance hole 2113 and the second clearance hole 2124 are both opposite to the operating hole 11, ensuring that when the baffle 22 moves to the clearance position, the operating hole 11 can connect to the interior of the equipment cabinet. It is understood that the number of second clearance holes 2124 and the fourth clearance hole 2125 corresponds to the number of operating holes 11. The third clearance hole 2114 and the fourth clearance hole 2125 are both opposite to the mounting hole 12 and are used to avoid the movement of the handle assembly 23. The third clearance hole 2114 and the fourth clearance hole 2125 can be set to the same shape as the mounting hole 12, or they can be set to a larger hole, as long as they can avoid the movement of the handle assembly 23.

[0056] In some embodiments (not shown), the support component 21 may also be arranged together with the door body 10 to form a slide, which is not specifically limited here.

[0057] like Figure 6 As shown, the sidewall of the slide includes a base portion and an elastically deformable portion 2121. The elastically deformable portion 2121 can elastically deform relative to the base portion. Of the elastically deformable portion 2121 and the baffle 22, one has a groove 221 and the other has a protrusion 2122. When the handle assembly 23 is located within the locking hole 122, the protrusion 2122 engages with the groove 221 to lock the position of the baffle 22. When the handle assembly 23 leaves the locking hole 122, the elastically deformable portion 2121 deforms to separate the protrusion 2122 from the groove 221. Through the cooperation of the protrusion 2122 and the groove 221, the baffle 22 can be held in a specific position without the need for operator support, thereby improving the convenience of operation.

[0058] In this embodiment, as Figure 6 As shown, the pressure plate 212 has a notch 2123, and the area enclosed by the notch 2123 is an elastic deformation portion 2121. The elastic deformation portion 2121 is provided with a protrusion 2122, and the baffle 22 is provided with a slot 221. In other embodiments, the elastic deformation portion 2121 may be provided with a slot 221, and the baffle 22 may be provided with a protrusion 2122.

[0059] In this embodiment, as Figure 6 As shown, the pressure plate 212 is provided with three sets of elastic deformation parts 2121. The three sets of elastic deformation parts 2121 are spaced apart and evenly arranged along the first direction. The baffle 22 has three sets of protrusions 2122. The three sets of protrusions 2122 are spaced apart and evenly arranged along the first direction. Each set of protrusions 2122 corresponds to a set of elastic deformation parts 2121. When the handle assembly 23 is located in the second locking hole 122b, the three sets of protrusions 2122 engage with the slots 221 on the three sets of elastic deformation parts 2121 respectively. When the handle assembly 23 is located in the first locking hole 122a, the uppermost set of slots 221 and the lowermost set of elastic deformation parts 2121 do not engage, while the protrusions 2122 on the other two sets of elastic deformation parts 2121 engage with the other two sets of slots 221 respectively. When the handle assembly 23 is located in the third locking hole 122c, the lowermost set of slots 221 and the uppermost set of elastic deformation parts 2121 do not engage, while the protrusions 2122 on the other two sets of elastic deformation parts 2121 engage with the other two sets of slots 221 respectively. It can be understood that the specific number of elastic deformation parts 2121 in each set of elastic deformation parts 2121 and the number of protrusions 2122 in each set of protrusions 2122 can be flexibly set according to requirements.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, based on the concept of this utility model, there will be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A locking mechanism for locking an operating hole (11) on a door body (10), wherein the door body (10) has a mounting hole (12), the mounting hole (12) comprising a sliding elongated hole (121) and a locking hole (122) connected along a first direction, characterized in that, The locking mechanism includes: The baffle (22) is slidable relative to the door (10) along the first direction to block or avoid the operating hole (11); The handle assembly (23) has a first end connected to the baffle (22) and a second end passing through the mounting hole (12). A padlock part (2313) is provided on the second end of the handle assembly (23). A locking member (24) is movably connected to the handle assembly (23) and can move relative to the handle assembly (23) to a locked position or an unlocked position. In the locked position, the locking member (24) engages with the locking hole (122) in a first state, locking the handle assembly (23) within the locking hole (122), with the padlock portion (2313) exposed. In the unlocked position, the locking member (24) engages with the locking hole (122) in a second state, allowing the handle assembly (23) to move into the sliding elongated hole (121). An elastic element (25) is connected to the handle assembly (23) and the locking element (24) respectively, and the elastic element (25) is configured to move the locking element (24) to the unlocked position.

2. The locking mechanism as described in claim 1, characterized in that, The locking member (24) is sleeved on the handle assembly (23) and can move along the axial direction of the handle assembly (23). The maximum width of the locking member (24) in the second direction is greater than the width of the sliding elongated hole (121) in the second direction. The second direction is perpendicular to the first direction. The first state is that the locking member (24) is inserted into the locking hole (122). The second state is that the locking member (24) is removed from the locking hole (122).

3. The locking mechanism as described in claim 2, characterized in that, The handle assembly (23) includes a first fixing member (231) and a second fixing member (232). The first fixing member (231) includes a main body (2311) and a stop (2312). One end of the second fixing member (232) is connected to the main body (2311), and the other end is connected to the baffle (22). The cross-sectional area of ​​the second fixing member (232) is larger than the cross-sectional area of ​​the main body (2311). The locking member (24) includes a cylindrical part (241) and an end plate part (242). The cylindrical part (241) is slidably engaged with the second fixing member (232). The stop part (2312) can stop the end plate part (242). The elastic member (25) is sleeved on the main body part (2311), and its two ends abut against the inner wall of the end plate part (242) and the second fixing member (232) respectively.

4. The locking mechanism as described in claim 3, characterized in that, The handle assembly (23) further includes a fastener (233), which passes through the baffle (22) and the second fixing member (232) in sequence and is threadedly connected to the first fixing member (231); or The second fixing member (232) is welded to the baffle (22), and the first fixing member (231) is threaded to the second fixing member (232).

5. The locking mechanism as described in claim 1, characterized in that, In the unlocked position, the locking member (24) covers the padlock part (2313).

6. The locking mechanism as described in any one of claims 1-5, characterized in that, The locking mechanism further includes a support component (21), which is configured to be connected to the door body (10). The support component (21) forms a slide extending in a first direction, or the support component (21) and the door body (10) surround each other to form a slide extending in a first direction. The baffle (22) is slidably disposed on the slide.

7. The locking mechanism as described in claim 6, characterized in that, The sidewall of the slide includes a base part and an elastic deformation part (2121). The elastic deformation part (2121) can elastically deform relative to the base part. Of the elastic deformation part (2121) and the baffle (22), one is provided with a groove (221) and the other is provided with a protrusion (2122). When the handle assembly (23) is located in the locking hole (122), the protrusion (2122) engages with the slot (221) to lock the position of the baffle (22). When the handle assembly (23) leaves the locking hole (122), the elastic deformation part (2121) deforms to separate the protrusion (2122) and the slot (221).

8. The locking mechanism as described in claim 7, characterized in that, The support assembly (21) includes a guide rail (211) and a pressure plate (212). The guide rail (211) is configured to be connected to the door body (10). The pressure plate (212) is disposed on the side of the guide rail (211) away from the door body (10) and surrounds the guide rail (211) to form the slide. The pressure plate (212) has a notch (2123), and the area surrounded by the notch (2123) is the elastic deformation part (2121).

9. A door device, characterized in that, The device includes a door body (10) and a locking mechanism as described in any one of claims 1-8. The door body (10) is provided with an operating hole (11) and a mounting hole (12). The mounting hole (12) includes a sliding elongated hole (121) and a locking hole (122) connected along a first direction. When the handle assembly (23) is located in the locking hole (122), the baffle (22) blocks the operating hole (11).

10. The door device as claimed in claim 9, characterized in that, The door body (10) is provided with two operating holes (11), and the mounting hole (12) includes three locking holes (122) and two sliding elongated holes (121). The locking holes (122) and the sliding elongated holes (121) are alternately arranged along the first direction. The three locking holes (122) are defined as the first locking hole (122a), the second locking hole (122b), and the third locking hole (122c) in sequence, wherein: When the handle assembly (23) is located in the first locking hole (122a), the baffle (22) only blocks one of the two operating holes (11); When the handle assembly (23) is located in the second locking hole (122b), the baffle (22) blocks the two operation holes (11); When the handle assembly (23) is located in the third locking hole (122c), the baffle (22) only blocks the other of the two operating holes (11).

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