Top cover

Abstract

The embodiment of the utility model provides a top cover, and relates to the technical field of air conditioners. The top cover is applied to the air conditioner outdoor unit and comprises a cover plate, the cover plate is used for covering a machine body, a first connecting plate and a third connecting plate are arranged on the two sides of the cover plate in the length direction of the cover plate correspondingly, a first digging hand part is arranged on the first connecting plate in a protruding mode, and a second digging hand part is arranged on the third connecting plate in a protruding mode. The distance between the end, away from the first connecting plate, of the first digging hand part and the first connecting plate is a first distance, the distance between the end, away from the third connecting plate, of the second digging hand part and the third connecting plate is a second distance, and the first distance is larger than or smaller than the second distance. Due to the fact that the first connecting plate is provided with the first digging hand part and the third connecting plate is provided with the second digging hand part, it is guaranteed that the first connecting plate and the third connecting plate are not prone to deformation when clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a top cover. Background Art

[0002] With the impact of global warming, air conditioners have become a magical tool for summer heat relief, and the improvement of residents' living standards has also driven air conditioners into thousands of households. Moving the air conditioner outdoor unit is a routine operation in the production, transportation and assembly of air conditioners.

[0003] The inventors have found that due to the large weight and size of outdoor air-conditioning units, mechanical loading and unloading is often used during transportation and loading and unloading. In addition, the air conditioners are squeezed against each other during transportation, and the two sides of the clamped top cover of the outdoor unit are easily deformed. Utility Model Content

[0004] The utility model aims to provide a top cover, which can reduce the deformation of both sides of the top cover of the air conditioner outdoor unit after being clamped.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a top cover, which is applied to an air conditioner outdoor unit. The air conditioner outdoor unit includes a body, and the top cover includes;

[0007] A cover plate, the cover plate is used to cover the machine body, and the cover plate is respectively provided with a first connecting plate and a third connecting plate on both sides along its length direction, the first connecting plate is protrudingly provided with a first digging portion, the third connecting plate is protrudingly provided with a second digging portion, the distance between the end of the first digging portion away from the first connecting plate and the first connecting plate is a first distance, the distance between the end of the second digging portion away from the third connecting plate and the third connecting plate is a second distance, and the first distance is greater than the second distance.

[0008] Through the above arrangement, since the first connecting plate is provided with the first digging portion and the third connecting plate is provided with the second digging portion, it is ensured that the first connecting plate and the third connecting plate will not be easily deformed when clamped, and the first spacing is greater than the second spacing. On the basis of reasonably utilizing the space extended by the electrical cover plate, the strength of the first connecting plate is improved.

[0009] In an optional embodiment, the machine body includes a first side panel and a third side panel relative to each other, and the first side panel is provided with an electrical cover. When the cover is covered on the machine body, the first connecting plate is on the same side as the first side panel, and the third connecting plate is on the same side as the third side panel, and the end of the first digging hand away from the first connecting plate is flush with the electrical cover.

[0010] Through the above arrangement, the space on the machine body from which the electrical cover plate extends is reasonably utilized, and the strength of the first connecting plate is improved through the first digging portion.

[0011] In an optional embodiment, the first connecting plate is provided with a first reinforcement portion, and the first digging portion is provided on the first reinforcement portion.

[0012] Through the above arrangement, the first reinforcement portion increases the strength of the first connecting plate, thereby further reducing the deformation of both sides of the top cover of the air conditioner outdoor unit after being clamped.

[0013] In an optional embodiment, the first reinforcement portion is a boss protruding from the first connecting plate in a direction away from the third connecting plate.

[0014] Through the above arrangement, the deformation of both sides of the top cover of the air conditioner outdoor unit after being clamped can be reduced.

[0015] In an optional embodiment, the first connecting plate is provided with a first mounting hole and a second mounting hole. In the extension direction of the first connecting plate, the first digging portion is located between the first mounting hole and the second mounting hole. The first digging portion has a digging end surface away from the first connecting plate. In the width direction of the first connecting plate, the axis of the first mounting hole is coplanar with the axis of the second mounting hole, and the distance between the side of the digging end surface close to the cover plate and the axis of the first mounting hole is in the range of 3 to 7 mm.

[0016] Through the above arrangement, it can be ensured that the gap between the first connecting plate and the first side plate of the body will not be too large, thereby achieving a certain waterproof and insect-proof purpose.

[0017] In an optional embodiment, the third connecting plate is provided with a second reinforcement portion, and the second digging portion is provided on the second reinforcement portion.

[0018] Through the above arrangement, the strength of the third connecting plate is enhanced by the two reinforcing parts, thereby further reducing the deformation of both sides of the top cover of the air conditioner outdoor unit after being clamped.

[0019] In an optional embodiment, the second reinforcement portion is a boss protruding from the third connecting plate in a direction away from the first connecting plate.

[0020] Through the above arrangement, the deformation of both sides of the top cover of the air conditioner outdoor unit after being clamped can be reduced.

[0021] In an optional embodiment, the first connecting plate is provided with a first mounting hole and a second mounting hole, and in the extension direction of the first connecting plate, the first digging portion is located between the first mounting hole and the second mounting hole.

[0022] Through the above arrangement, both sides of the first digging hand portion have fixing points with the machine body, which is conducive to ensuring the connection strength between the top cover and the machine body.

[0023] In an optional embodiment, in the extension direction of the first connecting plate, the first digging hand portion has a first end and a second end relative to each other, the first end is close to the first mounting hole, the second end is close to the second mounting hole, and the spacing range between the first end and the first mounting hole and the spacing range between the second end and the second mounting hole are in the range of 4 to 10 mm.

[0024] Through the above arrangement, when the hand-scoop portion of the air conditioner outdoor unit is clamped, deformation of the portion between the first mounting hole and the first end portion and the portion between the second mounting hole and the second end portion can be reduced.

[0025] In an optional embodiment, the first digging portion is located in the middle of the first connecting plate, and / or a third reinforcement portion is provided on the cover plate.

[0026] Through the above arrangement, when the first digging part is arranged in the middle of the first connecting plate, it can ensure that the forces on both sides of the first digging part of the first connecting plate are relatively uniform. And the strength of the cover plate can be increased by the third reinforcing part, thereby reducing the deformation of the cover plate after being clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of the top cover provided by an embodiment of the utility model at a first viewing angle;

[0029] Figure 2 A schematic diagram of the structure of the top cover provided by an embodiment of the utility model at a second viewing angle;

[0030] Figure 3 A schematic structural diagram of the top cover provided in an embodiment of the utility model under a third viewing angle.

[0031] Icon: 1-top cover; 100-first connecting plate; 110-first digging part; 111-first end; 112-second end; 113-end face of digging hand; 120-first reinforcement part; 130-first mounting hole; 140-second mounting hole; 200-second connecting plate; 300-third connecting plate; 310-second digging part; 320-second reinforcement part; 400-fourth connecting plate; 500-cover plate; 510-third reinforcement part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The specific structure of a top cover provided by an embodiment of the utility model and the technical effects it brings are described in detail below in conjunction with the patent drawings.

[0039] by Figure 1 For reference, the length direction of the top cover is direction a, the width direction of the top cover is direction b, and the width direction of the first connecting plate is direction c.

[0040] Please refer to Figure 1-Figure 3 The utility model embodiment provides a top cover 1, which is applied to an air conditioner outdoor unit (not shown in the figure). The air conditioner outdoor unit includes a body (not shown in the figure), that is, the air conditioner outdoor unit includes a base and a top cover 1, and the top cover 1 is arranged on the body.

[0041] The top cover 1 includes a cover plate 500, which is used to cover the machine body. The cover plate 500 is respectively provided with a first connecting plate 100 and a third connecting plate 300 on both sides along its length direction. The first connecting plate 100 is protrudingly provided with a first digging portion 110, and the third connecting plate 300 is protrudingly provided with a second digging portion 310. The distance between the end of the first digging portion 110 away from the first connecting plate 100 and the first connecting plate 100 is a first distance, and the distance between the end of the second digging portion 310 away from the third connecting plate 300 and the third connecting plate 300 is a second distance, and the first distance is greater than or less than the second distance.

[0042] When the air conditioner outdoor unit is clamped and moved, it is generally clamped on both sides of the length direction of the air conditioner outdoor unit, and therefore, it is generally clamped on the two side walls of the top cover 1 in the length direction.

[0043] It should be noted that, in some existing air-conditioning outdoor units, the top cover 1 is only provided with a digging hand on one side, that is, the first connecting plate 100 of the top cover 1 of some existing air-conditioning outdoor units is provided with a first digging hand portion 110 or the third connecting plate 300 is provided with a second digging hand portion 310. Therefore, when the air-conditioning outdoor unit is clamped, the side without the digging hand portion is prone to deformation.

[0044] In this embodiment, the first connecting plate 100 is provided with a first digging portion 110, and the third connecting plate 300 is provided with a second digging portion 310, which can ensure that the first connecting plate 100 and the third connecting plate 300 will not be easily deformed when clamped.

[0045] It should be noted that, in order to ensure that the air conditioner outdoor unit occupies a smaller space, the extension length of the digging hand is made as small as possible while ensuring the strength of the cover plate 500, and an electrical cover plate 500 is generally provided on one side of the body of the air conditioner outdoor unit in its own length direction. Therefore, since the first connecting plate 100 on the top cover 1 provided in this embodiment is provided with a first digging hand portion 110 and the third connecting plate 300 is provided with a second digging hand portion 310, when the top cover 1 is covered on the body, the second digging hand portion 310 with a smaller extension length can be located on the other side of the electrical cover plate 500, so that the first connecting plate 100 and the electrical cover plate 500 are on the same side, it is only necessary to ensure that the extension length of the first digging hand portion 110 does not exceed the extension length of the electrical cover plate 500, and the space occupied by the air conditioner outdoor unit is not increased. On the basis of reasonably utilizing the space extended by the electrical cover plate 500, the strength of the first connecting plate 100 is improved.

[0046] It can be understood that the machine body includes a first side plate and a third side plate opposite to each other, and the first side plate is provided with an electrical cover plate 500. It should be noted that the electrical cover plate 500 is convexly arranged on a side of the first side plate away from the third side plate. When the cover plate 500 is covered on the machine body, the first connecting plate 100 is on the same side as the first side plate, the third connecting plate 300 is on the same side as the third side plate, and the end of the first digging part 110 away from the first connecting plate 100 is flush with the electrical cover plate 500.

[0047] It should be noted that the first digging portion 110 is located in the middle of the first connecting plate 100. When the cover plate 500 is clamped, it is ensured that the force on both sides of the first digging portion 110 of the first connecting plate 100 is relatively uniform.

[0048] Therefore, since the end of the first digging portion 110 away from the first connecting plate 100 is flush with the electrical cover 500, the space on the machine body where the electrical cover 500 extends out is reasonably utilized, and the strength of the first connecting plate 100 is also improved by the first digging portion 110.

[0049] Of course, in some other embodiments, when the top cover 1 is installed on the machine body and the first connecting plate 100 is on the same side as the first side plate, the first digging portion 110 on the first connecting plate 100 may not be flush with the electrical cover plate 500, as long as it does not exceed the protruding length of the electrical cover plate 500.

[0050] In detail, the top cover 1 also includes a second connecting plate 200 and a fourth connecting plate 400, and the second connecting plate 200 and the fourth connecting plate 400 are respectively arranged along the width direction of the top cover 1, and the second connecting plate 200 and the fourth connecting plate 400 are respectively arranged on both sides of the cover plate 500 along the width direction, wherein the first connecting plate 100, the second connecting plate 200, the third connecting plate 300 and the fourth connecting plate 400 are connected end to end in sequence. It should be noted that the first connecting plate 100, the second connecting plate 200, the third connecting plate 300 and the fourth connecting plate 400 are integrally formed with the cover plate 500 to form a complete integrated top cover 1, and the above-mentioned width direction and length direction are perpendicular to each other.

[0051] The first connecting plate 100 is provided with a first reinforcing portion 120, and the first digging portion 110 is provided on the first reinforcing portion 120. It can be understood that the strength of the first connecting plate 100 is enhanced by the first reinforcing portion 120, thereby further reducing the deformation of both sides of the top cover 1 of the air conditioner outdoor unit after being clamped.

[0052] In detail, the first reinforcing portion 120 is a boss protruding from the first connecting plate 100 in a direction away from the third connecting plate 300 . It should be noted that the first reinforcing portion 120 is located on a side of the first connecting plate 100 away from the cover plate 500 .

[0053] Of course, in some other embodiments, the first reinforcement portion 120 may also be a reinforcement structure of other structural forms. For example, the first reinforcement portion 120 may also be a reinforcing rib structure provided between the first digging portion 110 and the first connecting portion.

[0054] Similarly, the third connecting plate 300 is provided with a second reinforcing portion 320, and the second digging portion 310 is provided on the second reinforcing portion 320. The strength of the third connecting plate 300 is enhanced by the two reinforcing portions, thereby further reducing the deformation of both sides of the top cover 1 of the air conditioner outdoor unit after being clamped.

[0055] The second reinforcing portion 320 is a boss protruding from the third connecting plate 300 in a direction away from the first connecting plate 100 , and the strength of the third connecting plate 300 is strengthened by the boss to prevent the third connecting plate 300 from being easily deformed when back clamped.

[0056] In some other embodiments, the second reinforcement portion 320 may also be a reinforcement structure of other structural forms. For example, the second reinforcement portion 320 may also be a reinforcing rib structure arranged between the second digging portion 310 and the third connecting plate 300 .

[0057] The first connecting plate 100 is provided with a first mounting hole 130 and a second mounting hole 140, and in the extending direction of the first connecting plate 100, the first digging portion 110 is located between the first mounting hole 130 and the second mounting hole 140. It can be understood that threaded holes corresponding to the first mounting hole 130 and the second mounting hole 140 are provided on the first side plate of the machine body, and when the top cover 1 is assembled with the machine body, the first connecting plate 100 of the top cover 1 is located on the side of the first side plate away from the third side plate, and the first mounting hole 130 and the second mounting hole 140 on the first connecting plate 100 are opposite to the threaded holes on the first side plate, and are installed by threaded fasteners.

[0058] Similarly, the third connecting plate 300 is also provided with a third mounting hole, and the third side plate of the machine body is also provided with a threaded hole corresponding to the third mounting hole, so as to facilitate the assembly and tightening of the threaded fastener.

[0059] Since the first mounting hole 130 and the second mounting hole 140 are disposed on both sides of the first hand-digging portion 110 , both sides of the first hand-digging portion 110 have fixing points with the machine body, which is beneficial to ensure the connection strength between the top cover 1 and the machine body.

[0060] In detail, the first digging hand portion 110 has a digging hand end face 113 away from the first connecting plate 100, and in the width direction of the first connecting plate 100, the axis of the first mounting hole 130 is coplanar with the axis of the second mounting hole 140, and the distance D between the side of the digging hand end face 113 close to the cover plate 500 and the axis of the first mounting hole 130 is in the range of 3 to 7 mm. That is to say, in the width direction of the first connecting plate 100, the distance D between the side of the digging hand end face 113 close to the cover plate 500 and the axis of the second mounting hole 140 is also in the range of 3 to 7 mm.

[0061] It should be noted that the width direction of the first connecting plate 100 is perpendicular to the length direction and the width direction of the top cover 1 , that is, the width direction of the first connecting plate 100 is parallel to the thickness direction of the top cover 1 .

[0062] It can be understood that since the first digging hand portion 110 is arranged on the first reinforcing portion 120, when the first reinforcing portion 120 is a boss protruding from the first connecting plate 100 in a direction away from the third connecting plate 300, a too large axial distance between the digging hand end face 113 and the first mounting hole 130 will increase the distance between the first connecting plate 100 and the first side plate. In this embodiment, in the width direction of the first connecting plate 100, the axial distance D between the side of the digging hand end face 113 close to the cover plate 500 and the axial distance between the first mounting hole 130 and the second mounting hole 140 is in the range of 3 to 7 mm, which can ensure that the gap between the first connecting plate 100 and the first side plate of the body is not too large, thereby achieving a certain waterproof and insect-proof purpose.

[0063] In the extension direction of the first connecting plate 100, the first digging portion 110 has a first end 111 and a second end 112 relative to each other, the first end 111 is close to the first mounting hole 130, and the second end 112 is close to the second mounting hole 140, and the spacing range between the first end 111 and the first mounting hole 130 and the spacing range between the second end 112 and the second mounting hole 140 are in the range of 4 to 10 mm.

[0064] On the first connecting plate 100 of the top cover 1 of some existing air-conditioning outdoor units, the distance between the first mounting hole 130 and the first end 111 of the digging portion is relatively large, generally exceeding 15 mm, and the distance between the second mounting hole 140 and the second end 112 of the digging portion is also generally exceeding 15 mm. The distance is relatively large. When the first digging portion 110 on the first connecting plate 100 is clamped, a force is given to the first digging portion 110 to approach the first connecting plate 100, wherein the position of the first mounting hole 130 and the position of the second mounting hole 140 on the first connecting plate 100 of the top cover 1 serve as support points. Since the distance between the first mounting hole 130 and the first end 111 is too large, or the distance between the second mounting hole 140 and the second end 112 is too large, the portion between the first mounting hole 130 and the first end 111 and the portion between the second mounting hole 140 and the second end 112 in the first side wall will be deformed.

[0065] In the present embodiment, the spacing range between the first end 111 and the first mounting hole 130 and the spacing range between the second end 112 and the second mounting hole 140 are both within the range of 4 to 10 mm, thereby reducing the spacing between the first mounting hole 130 and the first end 111 and the spacing between the second mounting hole 140 and the second end 112. Therefore, when the hand-carrying portion of the air conditioner outdoor unit is clamped, deformation of the portion between the first mounting hole 130 and the first end 111 and the portion between the second mounting hole 140 and the second end 112 can be reduced.

[0066] In this embodiment, in order to enhance the strength of the cover plate 500 , a third reinforcing portion 510 is provided on the cover plate 500 , thereby reducing deformation of the cover plate 500 after being clamped.

[0067] It should be noted that the third reinforcement portion 510 may be a reinforcement rib or a reinforcement protrusion.

[0068] In summary, a top cover 1 provided in an embodiment of the utility model includes a cover plate 500, which is used to cover the machine body, and the cover plate 500 is respectively provided with a first connecting plate 100 and a third connecting plate 300 on both sides along its own length direction, the first connecting plate 100 is protrudingly provided with a first digging portion 110, and the third connecting plate 300 is protrudingly provided with a second digging portion 310, and the distance between the end of the first digging portion 110 away from the first connecting plate 100 and the first connecting plate 100 is a first distance, and the distance between the end of the second digging portion 310 away from the third connecting plate 300 and the third connecting plate 300 is a second distance, and the first distance is greater than or less than the second distance. Since the first connecting plate 100 is provided with the first digging portion 110 and the third connecting plate 300 is provided with the second digging portion 310, it is ensured that the first connecting plate 100 and the third connecting plate 300 will not be easily deformed when clamped, and since the first spacing is greater than the second spacing, the strength of the first connecting plate 100 is improved on the basis of reasonable use of the space extended by the electrical cover plate 500.

[0069] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A top cover, applied to an air conditioner outdoor unit, the air conditioner outdoor unit comprising a body, characterized in that: The top cover comprises: A cover plate (500), the cover plate (500) is used to cover the machine body, and the cover plate (500) is respectively provided with a first connecting plate (100) and a third connecting plate (300) on both sides along its length direction, the first connecting plate (100) is protrudingly provided with a first digging portion (110), and the third connecting plate (300) is protrudingly provided with a second digging portion (310), the distance between the end of the first digging portion (110) away from the first connecting plate (100) and the first connecting plate (100) is a first distance, and the distance between the end of the second digging portion (310) away from the third connecting plate (300) and the third connecting plate (300) is a second distance, and the first distance is greater than the second distance.

2. The top cover according to claim 1, characterized in that: The machine body comprises a first side plate and a third side plate which are opposite to each other, the first side plate being provided with an electrical cover plate (500), when the cover plate (500) is covered on the machine body, the first connecting plate (100) is on the same side as the first side plate, the third connecting plate (300) is on the same side as the third side plate, and the end of the first digging portion (110) away from the first connecting plate (100) is flush with the electrical cover plate (500).

3. The top cover according to claim 1, characterized in that: The first connecting plate (100) is provided with a first reinforcement portion (120), and the first digging portion (110) is provided on the first reinforcement portion (120).

4. The top cover according to claim 3, characterized in that: The first reinforcing portion (120) is a boss protruding from the first connecting plate (100) in a direction away from the third connecting plate (300).

5. The top cover according to claim 4, characterized in that: The first connecting plate (100) is provided with a first mounting hole (130) and a second mounting hole (140); in the extension direction of the first connecting plate (100), the first digging portion (110) is located between the first mounting hole (130) and the second mounting hole (140); the first digging portion (110) has a digging end surface (113) away from the first connecting plate (100); in the width direction of the first connecting plate (100), the axis of the first mounting hole (130) and the axis of the second mounting hole (140) are coplanar; the distance between the side of the digging end surface (113) close to the cover plate (500) and the axis of the first mounting hole (130) is in the range of 3 to 7 mm.

6. The top cover according to claim 1, characterized in that: The third connecting plate (300) is provided with a second reinforcement portion (320), and the second digging portion (310) is provided on the second reinforcement portion (320).

7. The top cover according to claim 6, characterized in that: The second reinforcement portion (320) is a boss protruding from the third connecting plate (300) in a direction away from the first connecting plate (100).

8. The top cover according to claim 1, characterized in that: The first connecting plate (100) is provided with a first mounting hole (130) and a second mounting hole (140); in the extension direction of the first connecting plate (100), the first digging portion (110) is located between the first mounting hole (130) and the second mounting hole (140).

9. The top cover according to claim 8, characterized in that: In the extension direction of the first connecting plate (100), the first digging portion (110) has a first end portion (111) and a second end portion (112) opposite to each other, the first end portion (111) being close to the first mounting hole (130), and the second end portion (112) being close to the second mounting hole (140), and the spacing range between the first end portion (111) and the first mounting hole (130) and the spacing range between the second end portion (112) and the second mounting hole (140) being in the range of 4 to 10 mm.

10. The top cover according to claim 1, characterized in that: The first digging portion (110) is located in the middle of the first connecting plate (100), and / or a third reinforcing portion (510) is provided on the cover plate (500).

Images