Opening and closing door and cabinet

Abstract

The utility model discloses an opening and closing door and a cabinet, and relates to the technical field of cabinet opening and closing doors, the opening and closing door comprises a door body and a supporting part, a first side of the door body is rotatably supported with a frame body of the cabinet through the first supporting part to open and close the door body, a second side of the door body is movably supported with the frame body through the second supporting part, and at least when the door body is closed, the door body is opened and closed. The frame body supports the door body through the second supporting part. The first supporting part and the second supporting part are located on the left side and the right side of the gravity center of the door body respectively. The use stability of the opening and closing door is improved, the gravity bearing reliability of the opening and closing door is improved, and then adverse effects on equipment in the cabinet caused by deformation of the opening and closing door are avoided.

Description

Technical Field

[0001] This application relates to the technical field of cabinet door opening and closing, and particularly to a door opening and closing device. In addition, this application also relates to a cabinet including the above-mentioned door opening and closing device. Background Art

[0002] Since liquid-cooled server cabinets integrate many components, their overall weight is relatively heavy. Especially in the design of the door opening and closing, because it needs to bear the weight of a part of the display panel and the weight of some other key components, such as strong electrical electronic components and weak electrical electronic components, which are all installed on the door opening and closing device, the door opening and closing device bears a large load pressure. And the door opening and closing device is usually supported by rotation on only one side, resulting in deformation after long-term use under unbalanced force, and then the phenomenon that it cannot be completely closed tightly, which affects the airtightness and overall performance of the cabinet.

[0003] Therefore, in view of the above technical problems, how to avoid the deformation of the door opening and closing device is a technical problem that those skilled in the art need to solve. Summary of the Utility Model

[0004] The purpose of this application is to provide a door opening and closing device with high reliability in bearing gravity, thereby reducing the possibility of its deformation.

[0005] To achieve the above purpose, this application provides a door opening and closing device, including a door body and a support part. The first side of the door body is rotationally supported by a first support part with the frame of the cabinet to open and close the door body. The second side of the door body is movably supported by a second support part with the frame, and at least when the door body is closed, the frame supports the door body through the second support part. The first support part and the second support part are respectively located on the left and right sides of the center of gravity of the door body.

[0006] Preferably, the second support part includes a movable part provided on the door body and a support part provided on the frame. The movable part and the support part are relatively movably arranged. When the movable part moves to a preset area of the support part, the support part supports the movable part to lift upward by a preset distance.

[0007] Preferably, the movable part includes a pulley provided on the side of the door body, and the support part includes a load-bearing plate provided on the frame edge of the frame. The load-bearing plate is located below the pulley, and the pulley and the load-bearing plate are in rolling support within the preset area.

[0008] Preferably, the preset area includes a horizontal section located on the load-bearing plate. The load-bearing plate is also provided with an inclined section connected to the horizontal section and inclined downward along the opening direction of the door body. The pulley is spaced from the inclined section.

[0009] Preferably, the first side is a vertical side, the second side is a horizontal side, the movable member is disposed on the horizontal side and away from the first side where the first support portion is located.

[0010] Preferably, the first support portion includes at least one pivot mechanism disposed between opposite edges of the door body and the frame body to rotatably connect the door body and the frame body.

[0011] Preferably, the door body includes a component integration module as its first door panel and a connection frame as its second door panel. The connection frame is connected to one side of the housing of the component integration module. The side of the connection frame facing away from the component integration module is the first side and is rotatably connected to the frame body through the pivot mechanism.

[0012] A cover body serving as the panel surface of the first door panel is covered on the housing. A pivot mechanism is provided between opposite edges of the cover body and the connection frame to open and close the cover body rotatably.

[0013] Preferably, the component integration module includes a weak current module as the first door panel and a strong current module located inside the weak current module. A sealing strip is provided on the housing surface of the weak current module facing the strong current module. At least after the door body is closed in place, both sides of the sealing strip are in interference fit with the weak current module and the strong current module respectively to seal the open side of the strong current module.

[0014] Preferably, the strong current module is fixed inside the cabinet or fixed on the weak current module, and the strong current module is detachably connected to the weak current module.

[0015] A cabinet includes the switch door described in any one of the above.

[0016] Compared with the prior art, the technical solution provided by the present application has at least the following beneficial effects:

[0017] The door body of the switch door of the present application has two support portions. The first support portion serves as a rotational support, which can realize the rotation of opening and closing the door body while playing a certain supporting effect. The second support portion serves as a movable support, which can play a certain upward supporting role for the door body after the door body is closed in place. At the same time, the first support portion and the second support portion are located on the left and right sides of the center of gravity of the door body, so that the decomposition force of the supporting force received by the door body in the vertical direction is balanced with the gravity, and the decomposition forces of the supporting force received by the door body in the horizontal direction are also balanced with each other, improving the use stability of the switch door and enhancing the gravity bearing reliability of the switch door, thereby avoiding the adverse effects on the equipment inside the cabinet caused by the deformation of the switch door. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0019] Figure 1 Schematic diagram of the door opening and closing setting structure provided by the embodiment of the present application;

[0020] Figure 2 For Figure 1 Schematic diagram of the partially enlarged structure in

[0021] Figure 3 Schematic diagram of the structure of the door opening and closing in the open state provided by the embodiment of the present application;

[0022] Figure 4 Schematic diagram of the component integration module structure provided by the embodiment of the present application.

[0023] In the figure: 1 - door body; 2 - first support part; 21 - pivot mechanism; 3 - second support part; 31 - pulley; 32 - load-bearing plate; 321 - horizontal section; 322 - inclined section; 4 - weak current module; 41 - housing; 42 - cover; 5 - strong current module; 6 - connecting frame; 7 - sealing strip. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] It should be noted that in this embodiment, the orientation or positional relationship indicated by "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application. In addition, "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] To enable those skilled in the art of this technology to better understand the solution of the present application, the following will further elaborate on the present application in conjunction with the drawings and specific implementation manners.

[0027] A liquid-cooled server cabinet is a device that uses a liquid medium to transfer heat, taking away the heat generated by the server through a heat-conducting agent, thereby reducing the temperature of the server. It adopts liquid cooling technology, effectively solving the limitations of traditional air-cooled heat dissipation methods in high-density server heat dissipation. The switch doors of existing liquid-cooled server cabinets integrate numerous components, such as display panels, high-voltage electronic components, and low-voltage electronic components, etc. This design makes the switch doors bear a large load pressure, and the switch doors are prone to deformation after long-term use, especially in an environment with high-frequency use. The deformation of the switch doors will affect the airtightness of the cabinet, reducing the isolation ability between the inside and outside of the cabinet, which may affect the operating environment of the server, such as temperature, humidity, dust, etc., and further affect the stability of the server. Based on the above situation, this application proposes a method to improve the gravity-bearing reliability of the switch doors, reduce the possibility of deformation of the switch doors, and thus reduce the adverse effects on the internal equipment of the cabinet.

[0028] As Figure 1 shown, in this embodiment, a switch door is provided. The switch door includes a door body 1 and a support part. The support part includes a first support part 2 and a second support part 3. The first side of the door body 1 is rotationally supported by the first support part 2 and the frame of the cabinet to realize the opening and closing of the door body 1; the second side of the door body 1 is movably supported by the second support part 3 and the frame. The movable support can be a rolling support or a sliding support. The movable support is the support force exerted by the frame on the door body 1 through the second support part 3. This support force can jointly overcome the gravity of the door body 1 with the assistance of the first support part 2, and at the same time distribute the pressure borne by the door body 1 on the two support parts.

[0029] It should be noted that the movable support will not interfere with the door body 1 in the opening direction of the door body 1. Therefore, the setting method of the movable support does not affect the effect of the rotational opening and closing of the door body 1.

[0030] And at least when the door body 1 is in the closed state, the frame can support the door body 1 through the second support part 3. Since the first support part 2 is a rotational support, considering its machining error and assembly error, it may cause the situation of the door body 1 dropping corners during use, that is, the side far from the first support part 2 sinks. The dropping corners of the door body 1 will cause the rotational opening and closing path of the door body 1 to be abnormal, and thus over time, the door body 1 will be deformed, and then the phenomenon of being unable to close tightly will occur. Therefore, this application supports the door body 1 through the second support part 3 to prevent the situation of dropping corners.

[0031] During the normal use of the cabinet, it is usually in the closed state for a long time, and the switch door is only opened and closed during maintenance or repair. Therefore, the second support part 3 of this application can at least support the door body 1 when the door body 1 is in the closed state.

[0032] Of course, the door body 1 can also be supported by the second support portion 3 in the open state. For example, the effective support length of the second support portion 3 can be increased to correspond to the opening range of the door body 1, so as to support the entire opening process of the door body 1 and prevent the door body 1 from losing corners during the opening process.

[0033] In addition, considering the support effect of the two support portions on the entire door body 1, the first support portion 2 and the second support portion 3 are provided on the left and right sides of the center of gravity of the door body 1, so that the door body 1 can be more evenly stressed in the closed or open state, so as to avoid the situation of losing corners.

[0034] Combining the above embodiments, the door body 1 of the present application for opening and closing the door has two support portions. The first support portion 2 is used as a rotating support, which can realize the rotation of the door body 1 while playing a certain support effect. The second support portion 3 is used as a movable support. After the door body 1 is closed in place, it can play a certain upward support role for the door body 1. At the same time, the first support portion 2 and the second support portion 3 are located on the left and right sides of the center of gravity of the door body 1, so that the decomposed force of the support force received by the door body 1 in the vertical direction is balanced with the gravity, and at the same time, the decomposed forces of the support force received by the door body 1 in the horizontal direction are also balanced with each other, improving the use stability of opening and closing the door and enhancing the gravity bearing reliability of opening and closing the door, thereby avoiding the adverse effects on the equipment in the cabinet caused by the deformation of opening and closing the door.

[0035] The second support portion 3 includes a movable member provided on the door body 1 and a support member provided on the frame body. The door body 1 and the frame body cooperate to form the door structure of the cabinet. It is pointed out above that the frame body supports the support position of the door body 1 through the second support portion 3 in a movable manner. Therefore, the movable member needs to be movably arranged relative to the support member, and the relative movement between the two can be rolling or sliding. However, no matter which movement mode, the support member has a preset area. When the movable member moves to the preset area, the support member can support the movable member to lift upward by a preset distance. Of course, the preset distance is very small and should correspond to the error amount of the first support portion 2, so that the door body 1 will not generate a large acting force on the first support portion 2 in the radial direction, and further make the support force of the first support portion 2 on the door body 1 as much as possible in the axial direction, so that the first support portion 2 is more evenly stressed and the possibility of deformation or damage is reduced.

[0036] And the above preset area should be correspondingly set at the position where the door body 1 is closed, that is, when the door body 1 is closed, the movable member is located in the preset area of the support member, so as to realize the lifting effect in the closed state of the door body 1. Of course, without affecting the normal use of opening and closing the door, the range of the preset area can also be large enough to meet the lifting of the door body 1 in the open state of opening and closing the door.

[0037] The setting position of the movable part is flexible and can be set on the other side edges except the first side where the first support part 2 is located. That is, the door body 1 is usually rectangular, and the first support part 2 occupies one side edge of the rectangle, enabling the door body 1 to rotate around the first support part 2 as the rotation axis; while the movable part can be set on the other side edges of the rectangular door body 1, but it is necessary to ensure that the support points of the first support part 2 and the second support part 3 are located on the left and right sides of the center of the door body 1. The left and right are based on the direction of the center of gravity as a reference, that is, when the direction of the center of gravity is vertically downward, the two sides located on both sides of the center of gravity are defined as the left and right sides.

[0038] For example, the first support part 2 is provided on a vertical side edge of the door body 1. At this time, the door body 1 rotates around this vertical side edge for opening and closing, and the second support part 3 can be located on another vertical side edge or two horizontal side edges of the door body 1. The position of the support part is adapted to the position of the movable part, so as to support the door body 1.

[0039] It is pointed out above that the movable part and the support part can be rolling supports or sliding supports. Considering the friction force received during the opening and closing process of the door body 1, rolling support is selected as the movable support here; please refer to Figure 2 , the movable part includes a pulley 31 provided on the side edge of the door body 1, and the support part includes a load-bearing plate 32 provided on the frame edge of the frame. In order to achieve the support effect of the load-bearing plate 32 on the pulley 31, the load-bearing plate 32 needs to be provided under the pulley 31, and the pulley 31 can roll and contact with it within the preset area of the load-bearing plate 32.

[0040] From Figure 1 and 2 it can be seen that the load-bearing plate 32 is located under the pulley 31. Then, when the pulley 31 enters the preset area of the load-bearing plate 32, there is a certain interference fit between the load-bearing plate 32 and the pulley 31, and this interference fit causes the pulley 31 to be lifted upward by a preset distance, thereby driving the door body 1 to be lifted upward by a certain distance.

[0041] Regarding the setting position of the pulley 31, it can be located at the bottom edge, side edge or top edge of the door body 1. The position of the support part corresponds to the position of the pulley 31, and can extend towards the pulley 31 and extend under the pulley, so as to provide an upward supporting force. If the pulley 31 is located on the side edge of the door body 1, that is, on the side opposite to the first support part 2, the pulley 31 can be built into the door body 1, and an opening is provided on the side of the door body 1 facing the load-bearing plate 32, so that the load-bearing plate 32 can extend under the pulley 31. At the same time, an opening is also provided in the opening and closing direction of the door body 1 to prevent the door body 1 from interfering with the load-bearing plate 32 during the opening and closing process.

[0042] Although the frictional force of the sliding support is significantly greater than that of the rolling support, it is also possible to adopt the sliding support method in this application. When using the sliding support, the moving part can be set as a slider, and the support part can be the load-bearing plate 32 or the load-bearing rail. The slider can slide along the support part. However, it should be noted that since the support part needs to lift the moving part upward during the opening and closing process of the door body 1, the slider needs to have an arc chamfer, so that when the slider faces the lifting of the support part, a smoother transition can be achieved through the arc chamfer.

[0043] Regarding the position settings of the moving part and the support part in the sliding support, no more restrictions will be imposed here. Specifically, the setting method of the rolling support can be referred to.

[0044] Generally speaking, in order to make the mechanism itself and the internal equipment have higher stability, the cabinet needs to be placed horizontally for use. Correspondingly, the door body 1 should also be rotated and opened and closed in the vertical plane, and this application is also applicable to the switch door that rotates and opens and closes in the vertical plane. Therefore, the first side of the door body 1 should be the vertical side, and the vertical side is rotatably connected to the frame body through the first support part 2. Further, the second side is the horizontal side, and the moving part is arranged on the horizontal side. At the same time, in order to further improve the support effect of the second support part 3, the moving part should be as far away from the first side where the first support part 2 is located as possible, so that the supporting force received by the door body 1 is more stable.

[0045] Please refer to Figure 2 , on the basis of the above embodiments, the preset area includes the horizontal section 321 of the load-bearing plate 32, that is, when the pulley 31 slides to the horizontal section 321, it will be lifted upward by a preset distance, so as to keep the door body 1 closed smoothly on the horizontal section 321. In addition, the load-bearing plate 32 is also provided with an inclined section 322 connected to the horizontal section 321 and inclined downward along the opening direction of the door body 1. Considering that the door body 1 can be opened towards the outside of the cabinet or towards the inside of the cabinet, the inclined section 322 can be located on one side of the horizontal section 321 or on both sides of the horizontal section 321, so as to meet the situation where the door body 1 can be opened towards one side or towards both sides.

[0046] When the door body 1 changes from the closed state to the open state, the pulley 31 gradually moves from the horizontal section 321 of the load-bearing plate 32 to the inclined section 322. Until the pulley 31 disengages from the horizontal section 321 and corresponds to the inclined section 322, at this time, due to the stepped path of the load-bearing plate 32, the pulley 31 will sink downward by a certain distance. When the door body 1 corresponds to the inclined section 322, it is also spaced from the inclined section 322, so that the pulley 31 is in a suspended state, avoiding interference when opening and closing the door body 1 and being more labor-saving.

[0047] When the door body 1 changes from an open state to a closed state, the pulley 31 gradually moves from the inclined section 322 of the load-bearing plate 32 to the horizontal section 321 until the pulley 31 contacts the horizontal section 321. Due to the existence of the stepped path and a certain interference fit between the horizontal section 321 and the pulley 31, the pulley 31 will be lifted up a certain distance when contacting the horizontal section 321, thereby entering the horizontal section 321 under the rolling of the pulley 31 and completing the stable support of the door body 1.

[0048] Similarly, for sliding support, the slider can also slide relative to the horizontal section 321 and the inclined section 322 similar to the load-bearing plate 32, so as to achieve stable support within the preset area, and when the inclined section 322 transitions to the horizontal section 321, the smoothness of the transition process is ensured by the arc chamfer.

[0049] In some embodiments, the first support portion 2 includes at least one pivot structure, and the pivot mechanism 21 is arranged between the relative edges of the door body 1 and the frame body to enable the door body 1 and the frame body to be rotatably connected. The structure and principle of the pivot mechanism 21 can refer to the prior art and will not be repeated here.

[0050] It should be noted that the above-mentioned switch door can be applied to any cabinet with a door structure. The door body 1 itself can have a door panel structure, and accessories such as component integration modules can be arranged on the door panel structure, so that the overall center of gravity of accessories such as component integration modules and the door panel structure is used as the center of gravity of the door body 1.

[0051] Of course, the component integrated module can also be used as the door panel structure of the door body 1, that is, the door body 1 includes the component integrated module as its first door panel and the connecting frame 6 as its second door panel, please refer to Figure 3 and Figure 4 The connecting frame 6 is connected to one side of the housing 41 of the component integrated module. At this time, the side of the connecting frame 6 away from the component integrated module serves as the first side of the door body 1 and is rotatably connected to the frame through the pivot mechanism 21.

[0052] Please refer to Figure 4 , a cover body 42 serving as a first door panel is covered on the shell body 41, and a pivot mechanism 21 is provided between the relative edges of the cover body 42 and the connecting frame 6 to rotate and open and close the cover body 42. In other words, the present application arranges the pivot mechanism 21 into two rows, one row as a rotating opening and closing structure of the component integrated module, and the other row as a rotating opening and closing structure of the door body 1. When it is necessary to inspect or maintain the inside of the component integrated module, the component integrated module is opened by rotating the cover body 42, and the door body 1 is not opened at this time, thereby satisfying the maintainability of the component integrated module. When it is necessary to inspect or maintain the inside of the cabinet, the door body 1 of the cabinet is opened by rotating the component integrated module and the connecting frame 6, thereby satisfying the maintainability of the inside of the cabinet.

[0053] In addition, the component integration module includes a low-voltage module 4 and a high-voltage module 5. Generally speaking, considering the overall safety of the cabinet, the low-voltage module 4 needs to be used as the first door panel of the door body 1, that is, the cover body 42 of the low-voltage module 4 is used as the panel surface of the first door panel. At the same time, the high-voltage module 5 is located inside the low-voltage module, so as to ensure that the high-voltage module 5 will not be exposed, improving the overall safety of the cabinet. It can be predicted that the low-voltage module 4 has a housing 41, and low-voltage components are integrated in the housing 41. A sealing strip 7 is provided on the housing surface of the low-voltage module 4 facing the high-voltage module 5, and at least after the door body 1 is closed in place, both sides of the sealing strip 7 are in interference fit with the low-voltage module 4 and the high-voltage module 5 respectively to seal the open side of the high-voltage module 5.

[0054] It should be noted that the high-voltage module 5 is usually fixed inside the cabinet or fixed on the low-voltage module 4. When fixed inside the cabinet, the high-voltage module 5 and the low-voltage module 4 are designed separately, that is, when the door body 1 is opened, the low-voltage module 4 as the first door panel is separated from the high-voltage module 5. At this time, the high-voltage module 5 can be maintained and repaired; when fixed on the low-voltage module 4, the high-voltage module 5 can rotate simultaneously with the low-voltage module 4, but the two need to be connected through a certain support structure or locking structure to ensure the connection stability between the two. At the same time, the two are detachably connected, so that when maintenance is required, the high-voltage module 5 can be disassembled for maintenance, meeting the maintainability of the high-voltage module 5. However, there is an open side on the outer shell of some high-voltage modules 5, and there is no cover plate on the open side, which will cause the high-voltage module 5 to be affected by external moisture, dust and other factors. The sealing strip 7 provided on the low-voltage module 4 in this application just corresponds to the open side of the high-voltage module 5. Therefore, when the door body 1 is closed, the sealing strip 7 on the back shell surface of the low-voltage module 4 can be looped around the outer periphery of the open side of the high-voltage module 5, so that the sealing strip 7 is pressed between the high-voltage module 5 and the low-voltage module 4 through the closing action of the door body 1 to ensure the sealing of the open side of the high-voltage module 5.

[0055] Of course, if the high-voltage module 5 is fixed on the low-voltage module 4, the sealing strip 7 can also be used to seal the open side of the high-voltage module 5, and the sealing of the high-voltage module 5 can be achieved without the door body 1 being in the closed state.

[0056] In combination with the above embodiments, the present application supports the door body 1 through two support parts, thereby improving the load-bearing reliability of the door body 1 and reducing the possibility of its deformation; by using the cooperation of the movable part and the support part, the door body 1 is lifted upward at one end at least when it is closed, preventing the corner dropping caused by the machining error and assembly error of the first support part 2, or the corner dropping caused by the deformation of the door body 1 due to the overweight of the door body 1; using the housing 41 or the cover plate of the component integration module as the door panel of the door body 1, so that the available space inside the cabinet is larger, and on the other hand, the overall structure of the cabinet can be made more compact. At the same time, the component integration module has a separate cover body 42 as its opening and closing structure, so as to meet the maintainability of the component integration module; the housing 41 of the weak current module 4 or the door body 1 is used as the pressure part for sealing the opening side of the strong current module 5, and the opening side of the strong current module 5 is sealed through the sealing strip 7 to ensure the sealing performance of the strong current module 5.

[0057] In addition, the present application also provides a cabinet including the above-mentioned door for opening and closing, and this cabinet also has all the technical effects of the above-mentioned door for opening and closing.

[0058] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0059] Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A door switch, characterized in that, The invention comprises a door body (1) and a support part, wherein the first side of the door body (1) is rotatably supported by the first support part (2) and the frame of the cabinet so as to open and close the door body (1), and the second side of the door body (1) is movably supported by the frame through the second support part (3), and at least when the door body (1) is closed, the frame supports the door body (1) through the second support part (3) to overcome the gravity of the door body (1), and the first support part (2) and the second support part (3) are respectively located on the left and right sides of the center of gravity of the door body (1).

2. The switch door according to claim 1, wherein The second supporting part (3) comprises a movable part arranged on the door body (1) and a supporting part arranged on the frame body, the movable part and the supporting part being movably arranged relative to each other, the movable part being movable to a preset area of the supporting part, and the supporting part supporting the movable part to be lifted upward by a preset distance.

3. The door opening and closing according to claim 2, wherein The movable part comprises a pulley (31) arranged on the side of the door body (1), and the supporting part comprises a load-bearing plate (32) arranged on the frame edge of the frame body, the load-bearing plate (32) is located at the lower side of the pulley (31), and the pulley (31) and the load-bearing plate (32) are rollingly supported in the preset area.

4. The door opening and closing according to claim 3, characterized in that, The preset area comprises a horizontal section (321) located on the load-bearing plate (32); the load-bearing plate (32) is further provided with an inclined section (322) connected to the horizontal section (321) and inclined downward along the opening direction of the door body (1); the pulley (31) is spaced apart from the inclined section (322).

5. The switch door according to any one of claims 2-4, characterized in that, The first side is a vertical side, the second side is a horizontal side, and the movable part is arranged on the horizontal side and is far away from the first side where the first supporting part (2) is located.

6. The door opening and closing according to claim 5, characterized in that, The first supporting portion (2) comprises at least one pivot mechanism (21), and the pivot mechanism (21) is arranged between the opposite edges of the door body (1) and the frame body so as to enable the door body (1) and the frame body to be rotatably connected.

7. The door opening and closing according to claim 6, characterized in that, The door body (1) comprises a component integrated module as its first door panel and a connecting frame (6) as its second door panel, the connecting frame (6) being connected to one side of a housing (41) of the component integrated module, the side of the connecting frame (6) facing away from the component integrated module being the first side, and being rotatably connected to the frame via the pivot mechanism (21); The shell (41) is covered with a cover body (42) serving as the first door panel surface, and the pivot mechanism (21) is provided between the opposite edges of the cover body (42) and the connecting frame (6) to rotate and open and close the cover body (42).

8. The switch door according to claim 7, characterized in that, The component integrated module comprises a weak current module (4) serving as the first door panel and a strong current module (5) located inside the weak current module (4); a sealing strip (7) is provided on the shell surface of the weak current module (4) facing the strong current module (5); and at least after the door body (1) is closed in place, two sides of the sealing strip (7) are respectively interference-fitted with the weak current module (4) and the strong current module (5) to seal the opening side of the strong current module (5).

9. The door opening and closing device according to claim 8, wherein The high-voltage power module (5) is fixed inside the cabinet or on the low-voltage power module (4), and the high-voltage power module (5) is detachably connected to the low-voltage power module (4).

10. A cabinet, characterized in that, Including the switch door according to any one of claims 1-9.

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