Case cover and case

Abstract

The utility model provides a box cover and case, wherein the box cover includes: a plurality of connecting pieces and a plurality of connecting shafts; the plurality of connecting pieces and the plurality of connecting shafts are alternately arranged along a first direction, the connecting shaft includes a first shaft body and a second shaft body, the first shaft body and the second shaft body are alternately arranged along the first direction, the connecting piece is pivoted with the adjacent connecting piece along a second direction through the first shaft body or the second shaft body, the first direction is perpendicular to the second direction; the second shaft body is fixedly provided with a limiting part at opposite ends in the second direction; the limiting part is used for limiting the position of the second shaft body in a third direction and the second direction when the box cover is installed on the case, and the third direction is perpendicular to the second direction and the first direction respectively. The utility model can effectively reduce the damage probability of the internal devices of the case.

Description

Technical Field

[0001] This utility model relates to the field of computer technology, and in particular to a cover and chassis. Background Technology

[0002] Most existing industrial servers have a one-piece top cover, which needs to be completely removed to fully open the chassis. This leaves the internal components almost entirely exposed to the environment.

[0003] If the server is located in a dusty and humid environment, dust and water droplets can easily get into the cabinet after the top cover is removed, which will increase the chance of damage to the internal components. Utility Model Content

[0004] To solve the above problems, the cover and chassis provided by this utility model can achieve folding of the cover by setting multiple connecting pieces and multiple connecting shafts, which can effectively reduce the probability of damage to the internal components of the chassis.

[0005] In a first aspect, this utility model provides a box cover, which includes: multiple connecting pieces and multiple connecting shafts;

[0006] Multiple connecting pieces and multiple connecting shafts are arranged alternately along a first direction. The connecting shaft includes a first shaft body and a second shaft body. The first shaft body and the second shaft body are arranged alternately along the first direction. The connecting pieces are pivotally connected to adjacent connecting pieces along a second direction through the first shaft body or the second shaft body. The first direction is perpendicular to the second direction.

[0007] Limiting components are fixedly installed at both ends of the second shaft in the second direction;

[0008] The limiting component is used to limit the position of the second shaft in a third direction and a second direction when the cover is installed on the box body. The third direction is perpendicular to the second direction and the first direction, respectively.

[0009] Optionally, the limiting component includes: a connecting portion and a limiting portion;

[0010] One end of the connecting part is fixedly connected to the second shaft, and the other end of the connecting part extends along the third direction and is connected to the limiting part, which extends along the second direction.

[0011] The limiting portions at both ends of the second shaft extend in opposite directions relative to the corresponding connecting portions.

[0012] Optionally, the limiting part is rotatably connected to the connecting part in the second direction.

[0013] Optionally, the plurality of connecting pieces include: a front cover piece, a rear cover piece, and at least one connecting cover piece;

[0014] The first direction includes the front direction and the rear direction. A first bushing is fixedly provided on the rearward side of both the front cover and the connecting cover, and a second bushing is fixedly provided on the frontward side of both the connecting cover and the rear cover.

[0015] The connecting shaft passes through the corresponding first and second bushings, pivoting adjacent connecting pieces along the second direction.

[0016] Optionally, the front cover is provided with first fixing components at opposite ends along the second direction, and the first fixing components are used to connect the front cover to the housing.

[0017] Optionally, the first fixing component includes: a first mounting portion and a first fixing member;

[0018] One end of the first mounting part is fixedly connected to the front cover plate, and the other end of the first mounting part extends along the fourth direction and is provided with a first mounting hole. The fourth direction is perpendicular to the first direction and the second direction respectively. The first fastener is connected to the box body through the first mounting hole.

[0019] Optionally, the rear cover is provided with second fixing components at opposite ends along the second direction, and the second fixing components are used to detachably connect the rear cover to the housing.

[0020] Optionally, the second fixing component includes: a second mounting part and a second fixing member;

[0021] One end of the second mounting part is fixedly connected to the rear cover plate, and the other end of the second mounting part extends along the fifth direction and is provided with a second mounting hole. The fifth direction is perpendicular to the first direction and the second direction respectively. The second fastener is detachably connected to the box body through the second mounting hole.

[0022] In a second aspect, the present invention provides a chassis, the chassis comprising: a chassis body and a chassis cover as described in any of the first aspects;

[0023] The opening of the box is located on a surface in the box that is parallel to the first and second directions, and the box cover is connected to the box and covers the opening.

[0024] Optionally, the box body is fixedly provided with support edges at opposite ends in the second direction at the opening, and the support edges extend along the first direction;

[0025] The limiting component slides along the first direction to connect with the support edge, thereby limiting the position of the second shaft in the third and second directions.

[0026] The cover and chassis provided in this embodiment of the utility model can achieve folding of the cover by setting multiple connecting pieces and multiple connecting shafts. Thus, when it is necessary to open the chassis, it is not necessary to remove the entire cover from the chassis; only a portion of the connecting pieces need to be folded. This effectively reduces the area where external dust and water droplets enter the chassis, thereby reducing the probability of damage to internal components. By fixing limiting components at both ends of the second shaft in the second direction, the connecting pieces can be ensured to fold in an orderly manner. The structure is simple and the operation is convenient. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the 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.

[0028] Figure 1 This is a schematic structural diagram of a box lid in a partially disassembled state according to an embodiment of this application;

[0029] Figure 2 This is a schematic structural diagram of the box lid and box body in a separated state according to an embodiment of this application;

[0030] Figure 3 This is a schematic structural diagram of a chassis according to an embodiment of this application with the chassis cover in a folded state;

[0031] Figure 4 This is a schematic partial cross-sectional view of a chassis according to an embodiment of this application with the chassis cover fully covering the opening;

[0032] Figure 5 This is a schematic structural diagram of a chassis according to an embodiment of the present application, with the chassis cover fully covering the opening.

[0033] Figure 6 This is a schematic structural diagram of a box body according to an embodiment of this application;

[0034] Figure 7 This is a schematic partial side view of a chassis according to an embodiment of this application with the chassis cover in a folded state.

[0035] Figure label:

[0036] 1. Connecting piece; 11. Front cover piece; 12. Rear cover piece; 13. Connecting cover piece; 14. First bushing; 15. Second bushing; 2. Connecting shaft; 21. First shaft body; 22. Second shaft body; 3. Limiting component; 31. Connecting part; 32. Limiting part; 41. First fixing component; 411. First mounting part; 412. First fixing member; 42. Second fixing component; 421. Second mounting part; 422. Second fixing member; 51. Box body; 511. Opening; 512. Supporting edge; 513. First threaded hole; 514. Second threaded hole; 52. Box cover. Detailed Implementation

[0037] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “under,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0040] It should be noted that when an element is referred to as "fixedly connected" to another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is referred to as being "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0041] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0042] Firstly, see [the following] Figure 1 , Figure 2 and Figure 3 One embodiment of this utility model provides a box cover 52. The box cover 52 includes: a plurality of connecting pieces 1 and a plurality of connecting shafts 2.

[0043] Multiple connecting pieces 1 and multiple connecting shafts 2 are arranged alternately along a first direction. It should be noted that the alternating arrangement of multiple connecting pieces 1 and multiple connecting shafts 2 along the first direction means that the centers of the multiple connecting pieces 1 and the centers of the multiple connecting shafts 2 are arranged alternately along the first direction.

[0044] The connecting shaft 2 includes a first shaft body 21 and a second shaft body 22. The first shaft body 21 and the second shaft body 22 are arranged alternately along a first direction. The connecting piece 1 is pivotally connected to the adjacent connecting piece 1 along a second direction via the first shaft body 21 or the second shaft body 22. The first direction is perpendicular to the second direction.

[0045] It is understandable that both ends of the cover 52 in the first direction are connecting pieces 1; when the connecting shaft 2 between two adjacent connecting pieces 1 is the first shaft 21, the two adjacent connecting pieces 1 are pivotally connected through the first shaft 21; when the connecting shaft 2 between two adjacent connecting pieces 1 is the second shaft 22, the two adjacent connecting pieces 1 are pivotally connected through the second shaft 22.

[0046] Limiting components 3 are fixedly provided at both ends of the second shaft 22 in the second direction. The limiting components 3 are used to limit the position of the second shaft 22 in the third direction and the second direction when the cover 52 is installed on the box body 51. The third direction is perpendicular to the second direction and the first direction, respectively. Thus, when one end of the cover 52 is fixed in the first direction and the other end is free in the first direction, when the free end of the cover 52 is pushed towards the fixed end in the first direction, the second shaft 22 can only slide towards the fixed end of the cover 52 in the first direction, while the first shaft 21 can move in the third direction while moving towards the fixed end of the cover 52 in the first direction. This allows the connecting piece 1 to be folded smoothly and orderly.

[0047] In this embodiment, the first direction is the front-back direction, the second direction is the left-right direction, and the third direction is the up-down direction.

[0048] The cover 52 provided in this embodiment can be folded by setting multiple connecting pieces 1 and multiple connecting shafts 2. Thus, when the chassis needs to be opened, it is not necessary to remove the entire cover 52 from the chassis 51; only a portion of the connecting pieces 1 needs to be folded. This effectively reduces the area where external dust and water droplets enter the chassis 51, thereby reducing the probability of damage to the internal components. By fixing limiting components 3 at both ends of the second shaft 22 in the second direction, the connecting pieces 1 can be folded in an orderly manner. The structure is simple and the operation is convenient.

[0049] Combination Figure 4 The limiting component 3 includes a connecting part 31 and a limiting part 32. One end of the connecting part 31 is fixedly connected to the second shaft 22, and the other end of the connecting part 31 extends along a third direction and is connected to the limiting part 32, which extends along a second direction.

[0050] It is understandable that the connecting part 31 can be connected to one end of the limiting part 32 or to the middle part of the limiting part 32.

[0051] When the connecting part 31 is connected to one end of the limiting part 32, the limiting parts 32 at both ends of the second shaft 22 extend in opposite directions relative to the corresponding connecting part 31. That is, the two limiting parts 32 on the same second shaft 22 can be arranged opposite to each other on the corresponding connecting part 31, or they can be arranged opposite to each other on the corresponding connecting part 31. The orientation of the limiting parts 32 on all the second shafts 22 on the same cover 52 is consistent.

[0052] Specifically, when the limiting portions 32 on all the second shafts 22 on the same cover 52 are arranged opposite to each other, the limiting member 3 is adapted to connect to the box 51 from the outside of the box 51 to limit the second shafts 22 to move only relative to the box 51 in the first direction. When the limiting portions 32 on all the second shafts 22 on the same cover 52 are arranged opposite to each other, the limiting member 3 is adapted to connect to the box 51 from the inside of the box 51 to limit the second shafts 22 to move only relative to the box 51 in the first direction.

[0053] When the connecting part 31 and the limiting part 32 are connected at the middle position, the limiting part 3 has an inverted T-shaped structure. In this way, the cover 52 can be used to connect to the box body 51 from the outside and from the inside of the box body 51.

[0054] In an optional embodiment, the limiting part 32 is rotatably connected to the connecting part 31 along the second direction. This converts the sliding friction between the limiting part 32 and the housing 51 into rolling friction, thereby facilitating the folding of the lid 52.

[0055] In this embodiment, the limiting part 32 is cylindrical; the limiting parts 32 on all the second shafts 22 on the same cover 52 are arranged opposite to each other, and the limiting part 32 is fixedly connected to the connecting part 31.

[0056] Combination Figure 1 The plurality of connecting pieces 1 include: a front cover piece 11, a rear cover piece 12, and at least one connecting cover piece 13. The first direction includes a front direction and a rear direction. A first bushing 14 is fixedly provided on the rearward side of the front cover piece 11 and the connecting cover piece 13, and a second bushing 15 is fixedly provided on the frontward side of the connecting cover piece 13 and the rear cover piece 12.

[0057] The connecting shaft 2 passes through the first bushing 14 and the second bushing 15, which are coaxial in the second direction, and pivotally connects the adjacent connecting pieces 1 along the second direction.

[0058] It should be noted that the first bushing 14 can be located directly behind or diagonally below the front cover plate 11 and the connecting cover plate 13; similarly, the second bushing 15 can be located directly in front of the connecting cover plate 13 and the rear cover plate 12 or diagonally below the front.

[0059] When the first bushing 14 is positioned diagonally below and behind the front cover plate 11 and the connecting cover plate 13, and the second bushing 15 is positioned diagonally below and in front of the connecting cover plate 13 and the rear cover plate 12, all the connecting pieces 1, when unfolded, have their opposite sides of adjacent connecting plates abutting each other to form a flat plate. The first bushing 14 and the second bushing 15 are both located below this flat plate. In this case, it can also be understood that multiple connecting pieces 1 and multiple connecting shafts 2 are arranged alternately along the first direction.

[0060] In this embodiment, the front cover 11 is pivotally connected to the adjacent connecting cover 13 via the first shaft 21, and the rear cover 12 is pivotally connected to the adjacent connecting cover 13 via the first shaft 21; there are 8 connecting cover 13s, 5 first shafts 21s, and 4 second shafts 22s; the first bushing 14 is located directly behind the front cover 11 and the connecting cover 13, and the second bushing 15 can be located directly in front of the connecting cover 13 and the rear cover 12. When all the connecting pieces 1 are unfolded, the gaps formed between adjacent connecting pieces 1 are filled by the corresponding first bushing 14 and second bushing 15. Figure 4 and Figure 5 .

[0061] The front cover 11 and each connecting cover 13 have two coaxial first bushings 14 fixed at their rear ends, and each connecting cover 13 and the rear cover 12 have a second bushing 15 fixed at their front ends. When the connecting shaft 2 passes through the two second bushings 15 and one first bushing 14, the two first bushings 14 are located on both sides of the second bushing 15, and the length of the first bushing 14 in the second direction is less than the length of the second bushing 15 in the second direction. By limiting the relative position and length of the first bushings 14 and the second bushings 15, the stability of the pivot connection between two adjacent connecting pieces 1 can be ensured.

[0062] Furthermore, in combination Figure 1 and Figure 2 The front cover 11 is provided with a first fixing component 41 at each of its opposite ends along the second direction. The first fixing component 41 is used to connect the front cover 11 to the housing 51.

[0063] Specifically, the first fixing component 41 includes a first mounting part 411 and a first fixing member 412. One end of the first mounting part 411 is fixedly connected to the front end of the front cover plate 11, and the other end of the first mounting part 411 extends along the fourth direction and has a first mounting hole. The fourth direction is perpendicular to the first direction and the second direction respectively. The first fixing member 412 is connected to the housing 51 through the first mounting hole.

[0064] The third direction includes the fourth direction; the front cover 11 can be fixedly connected to or detachably connected to the housing 51 via the first fixing component 41; when the front cover 11 is connected to the housing 51, the front cover 11 is detachably connected to the housing 51 via the first fixing component 41; the first mounting part 411 can be located on the inner side or the outer side of the housing 51. In this embodiment, the fourth direction is the downward direction, and when the front cover 11 is connected to the housing 51, the first mounting part 411 can be located on the outer side of the housing 51.

[0065] The first fixing member 412 is a screw, which can be directly threaded to the housing 51, or connected to the front cover 11 to the housing 51 through a nut. This embodiment does not specifically limit this. The first fixing member 412 is rotatably connected to the first mounting part 411 in the second direction through the first mounting hole.

[0066] Furthermore, the rear cover 12 is provided with second fixing components 42 at opposite ends along the second direction, and the second fixing components 42 are used to detachably connect the rear cover 12 to the housing 51.

[0067] Specifically, the second fixing component 42 includes: a second mounting part 421 and a second fixing member 422. One end of the second mounting part 421 is fixedly connected to the rear end of the rear cover plate 12, and the other end of the second mounting part 421 extends along the fifth direction and has a second mounting hole. The fifth direction is perpendicular to the first direction and the second direction respectively. The second fixing member 422 is detachably connected to the housing 51 through the second mounting hole.

[0068] The third direction includes the fifth direction; the rear cover 12 is detachably connected to the housing 51 via the second fixing component 42 by means of threaded connection or snap-fit ​​connection, etc.; the second mounting part 421 can be located on the inner side or the outer side of the housing 51. In this embodiment, the fifth direction is consistent with the fourth direction, both being downward directions; when the rear cover 12 is connected to the housing 51, the second mounting part 421 can be located on the outer side of the housing 51.

[0069] The second fastener 422 is a non-removable screw, which can be directly threaded to the housing 51, and can also be used to connect the rear cover 12 to the housing 51 through a nut. This embodiment does not specifically limit this. The second fastener 422 is rotatably connected to the second mounting part 421 through the second mounting hole along the second direction.

[0070] The cover 52 provided in this embodiment can be folded by setting multiple connecting pieces 1 and multiple connecting shafts 2. Thus, when the chassis needs to be opened, it is not necessary to remove the entire cover 52 from the chassis 51; only a portion of the connecting pieces 1 needs to be folded. This effectively reduces the area where external dust and water droplets enter the chassis 51, thereby reducing the probability of damage to the internal components. By fixing limiting components 3 at both ends of the second shaft 22 in the second direction, the connecting pieces 1 can be folded in an orderly manner. The structure is simple and the operation is convenient.

[0071] Secondly, one embodiment of this utility model provides a chassis, see [link to relevant documentation]. Figure 5 The chassis includes: a housing 51 and a cover 52 as described in the first aspect.

[0072] Combination Figure 5 and Figure 6 The opening 511 of the box 51 is located on a surface in the box 51 that is parallel to the first direction and the second direction. The box cover 52 is connected to the box 51 and covers the opening 511.

[0073] Furthermore, the housing 51 has support edges 512 fixedly provided at opposite ends in the second direction at the opening 511. The support edges 512 extend along the first direction. The limiting member 3 is slidably connected to the support edges 512 along the first direction to limit the position of the second shaft 22 in the third and second directions.

[0074] It is understood that the support edge 512 can be located on the outer side or the inner side of the housing 51. In this embodiment, the support edge 512 is located on the inner side of the housing 51; the two ends of the connecting piece 1 are respectively attached to the corresponding support edge 512. The front and rear ends of the top of the housing 51 are respectively provided with a first threaded hole 513 and a second threaded hole 514. The first fixing member 412 is threadedly connected to the housing 51 through the first threaded hole 513, and the second fixing member 422 is threadedly connected to the housing 51 through the second threaded hole 514.

[0075] Combination Figure 4 and Figure 7 The folding principle of the lid 52 is as follows: First, the captive screws on the rear cover 12 are pulled out from the box body 51; then, a horizontal force is applied in the direction of arrow I to push the rear cover 12. Since the first shaft 21 overlaps the support edge 512, and the second shaft 22 is constrained in the vertical direction by the limiting component 3, when a horizontal force is applied in the direction of arrow I, the adjacent connecting pieces 1 connected by the first shaft 21 will shift in the direction of arrow II at the connection point. Finally, due to the rear end of the connecting pieces 1, the lid 52 will stop folding after folding to a certain angle. By controlling the duration of the force applied in the direction of arrow I, different numbers of connecting pieces 1 can be used for blocking.

[0076] In one alternative embodiment, when the opening 511 of the box 51 is opened to a suitable size, the cap screws are turned in the opposite direction so that the cap screws at both ends press against the box 51, thereby fixing the box cover 52 in the folded state.

[0077] The principle of the cover 52 shell provided by this utility model that is compatible with multiple sizes of enclosure 51 is as follows: When the length of the enclosure is extended or shortened by N cover 52 connecting pieces 1, it is only necessary to connect N cover 52 connecting pieces 1 between the front cover piece 11 or the rear cover piece 12 of the enclosure 51 to complete the compatibility with longer enclosures 51, thereby greatly improving the design efficiency of the enclosure in industrial servers and reducing the design and manufacturing costs of enterprises; at the same time, it also improves the convenience of maintenance personnel to replace and maintain the internal components of the enclosure 51 and reduces the risk of dust and water entering the enclosure 51 due to the enclosure 51 being fully open during maintenance, thereby reducing the probability of damage to the internal components of the enclosure 51.

[0078] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A box lid, characterized in that, The box cover includes: multiple connecting pieces and multiple connecting shafts; Multiple connecting pieces and multiple connecting shafts are arranged alternately along a first direction. Each connecting shaft includes a first shaft and a second shaft. The first shaft and the second shaft are arranged alternately along the first direction. Each connecting piece is pivotally connected to an adjacent connecting piece along a second direction via the first shaft or the second shaft. The first direction is perpendicular to the second direction. Limiting components are fixedly provided at both ends of the second shaft in the second direction; The limiting component is used to limit the position of the second shaft in a third direction and a second direction when the cover is installed on the box body, the third direction being perpendicular to the second direction and the first direction, respectively.

2. The box lid according to claim 1, characterized in that, The limiting component includes: a connecting part and a limiting part; One end of the connecting part is fixedly connected to the second shaft, and the other end of the connecting part extends along the third direction and is connected to the limiting part, which extends along the second direction. The limiting portions at both ends of the second shaft extend in opposite directions relative to the corresponding connecting portions.

3. The lid according to claim 2, characterized in that, The limiting part is rotatably connected to the connecting part along the second direction.

4. The box lid according to claim 1, characterized in that, The plurality of connecting pieces include: a front cover piece, a rear cover piece, and at least one connecting cover piece; The first direction includes a front direction and a rear direction. A first bushing is fixedly provided on the side of the front cover and the connecting cover facing the rear direction, and a second bushing is fixedly provided on the side of the connecting cover and the rear cover facing the front direction. The connecting shaft passes through the corresponding first bushing and second bushing, and pivotally connects the adjacent connecting pieces along the second direction.

5. The box lid according to claim 4, characterized in that, The front cover is provided with a first fixing component at each of its opposite ends along the second direction, and the first fixing component is used to connect the front cover to the housing.

6. The box lid according to claim 5, characterized in that, The first fixing component includes: a first mounting part and a first fixing member; One end of the first mounting part is fixedly connected to the front cover plate, and the other end of the first mounting part extends along the fourth direction and is provided with a first mounting hole. The fourth direction is perpendicular to the first direction and the second direction respectively. The first fastener is connected to the box body through the first mounting hole.

7. The box lid according to claim 4, characterized in that, The rear cover is provided with a second fixing component at each of its opposite ends along the second direction. The second fixing component is used to detachably connect the rear cover to the housing.

8. The box lid according to claim 7, characterized in that, The second fixing component includes: a second mounting part and a second fixing member; One end of the second mounting part is fixedly connected to the rear cover plate, and the other end of the second mounting part extends along the fifth direction and is provided with a second mounting hole. The fifth direction is perpendicular to the first direction and the second direction respectively. The second fastener is detachably connected to the box body through the second mounting hole.

9. A chassis, characterized in that, The chassis includes: a chassis body and a chassis cover as described in any one of claims 1 to 8; The opening of the box is located on a surface in the box that is parallel to the first direction and the second direction, and the box lid is connected to the box and covers the opening.

10. The chassis according to claim 9, characterized in that, The box body is fixedly provided with support edges at opposite ends in the second direction at the opening, and the support edges extend along the first direction; The limiting component slides along the first direction to connect with the supporting edge, thereby defining the position of the second shaft in the third direction and the second direction.

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