A waterproof enclosure and electrical device

Abstract

This utility model discloses a waterproof enclosure and electrical device. The waterproof enclosure includes: a base, which is formed by side walls and a bottom wall to create an installation chamber; the upper edge of the side wall is provided with a locking part that folds outward toward the base; a top cover, which rests against and is fixed to the locking part to cover the installation chamber; the peripheral edge of the top cover is bent downward to form a water-retaining edge, which is located outside the locking part. This waterproof enclosure has good waterproof performance.

Description

Technical Field

[0001] This utility model relates to the field of waterproof chassis technology, specifically to a waterproof chassis and electrical device. Background Technology

[0002] Existing electrical installations, such as integrated energy storage converters and boost converters, include a chassis and electrical components or related accessories such as power modules located within the chassis. When such electrical installations are mounted in outdoor electrical cabinets, the chassis needs to have a certain degree of waterproofing to prevent rainwater from entering. Currently, waterproof strips are typically installed between the top cover and the base of the chassis. However, the high temperature inside electrical cabinets causes these waterproof strips to age quickly, which is detrimental to maintaining a long-term seal and waterproof effect. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and provide a waterproof enclosure and electrical device, which has good waterproof performance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A waterproof enclosure, comprising: a base, which is formed by side walls and a bottom wall to form an installation chamber; the upper edge of the side wall is provided with a locking part that folds outward toward the base; a top cover, which rests against and is fixed to the locking part to cover the installation chamber; the peripheral edge of the top cover is bent downward to form a water-blocking edge, the water-blocking edge being located outside the locking part.

[0006] Technical Solution 2 based on Technical Solution 1: The upper part of the sidewall is provided with an inwardly retracted part that folds inward toward the base. The inwardly retracted part and the locking part are connected by an upwardly extending connecting part. The lower edge of the water-blocking edge is close to the inwardly retracted part.

[0007] Technical Solution 3 based on Technical Solution 2: The portion of the sidewall connected to the recessed portion and located below the recessed portion forms a wall surface; the base is configured such that at least a portion of the locking portion of the sidewall has its outer edge protruding from the wall surface of that portion of the sidewall, and the outer edges of the locking portions of the other portions of the sidewall are flush with or recessed from the wall surface of that portion of the sidewall.

[0008] Technical solution four based on technical solution two further includes several fastening components, the fastening components including fastening nuts, nut sleeves and bolts; the nut sleeve is fixed to the base in the rotation direction of the fastening component, the fastening nut is anti-rotatingly mounted on the nut sleeve and located below the locking part relative to the rotation direction of the fastening component, and the bolt is fixed to the top cover and the base from above the top cover by thread engagement with the fastening nut.

[0009] Technical solution five based on technical solution four: The locking part is provided with a plurality of polygonal mating holes that run through the vertical direction, and its upper surface is recessed downward at the mating holes to form a relief groove; the nut sleeve hooks and tensions against the edge of the mating hole to be fixedly connected with the base in the rotation direction of the fastening assembly; the position of the relief groove corresponds to the position of the edge on the mating hole for the nut sleeve to hook.

[0010] Technical solution six based on technical solution five: The nut sleeve is provided with a receiving groove for accommodating the fastening nut, and two hook arms are provided upwardly from the receiving groove; the fastening nut forms an anti-rotation fit with the nut sleeve by abutting against the groove wall of the receiving groove in its rotational direction; the hook arms are detachably hooked to the mating hole by elastic deformation.

[0011] Technical solution seven, based on technical solution two, also includes a waterproof strip, which is arranged in a ring between the locking part and the top cover.

[0012] Technical solution eight based on technical solution seven: The lower surface of the waterproof strip is provided with a sealing protrusion that extends outward relative to the top cover, and the sealing protrusion is adapted to abut against the upper surface of the locking part.

[0013] Technical solution nine based on technical solution seven: The lower surface of the top cover is provided with a plurality of protrusions corresponding to the locking part; the protrusions abut against the upper surface of the locking part to limit the degree of deformation of the waterproof strip after being compressed.

[0014] In addition, this utility model also provides technical solution ten: an electrical device comprising a plurality of electrical components, wherein the electrical components are housed in a waterproof enclosure as described in any one of technical solutions one to nine.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] Technical Solution 1 provides a waterproof enclosure, comprising a base and a top cover. The base has an outwardly folded locking portion on its side wall, and the top cover has a downwardly bent water-retaining edge. After assembly, the top cover covers the mounting cavity formed by the base, thus initially forming an enclosure with a sealed chamber. Simultaneously, the top cover rests against and is fixed to the locking portion, with the water-retaining edge located outside the locking portion. Because the water-retaining edge bends downward, it blocks the connection gap between the top cover and the locking portion, effectively preventing rainwater from directly entering the joint between the locking portion and the top cover, thus improving the enclosure's waterproof performance. Furthermore, the locking portion and water-retaining edge on the base and top cover can be formed through a simple folding structure, making the structure simple and easy to manufacture. The water-retaining edge, through its cooperation with the locking portion, also restricts the movement range of the top cover on the base, facilitating the positioning and fixing of the top cover.

[0017] In technical solution two, an inwardly folded-in section is provided on the upper part of the sidewall. The inwardly folded section is connected to the locking section via a connecting part. This is equivalent to designing the upper part of the sidewall as an "S"-shaped structure that first bends inward, then upward, and finally outward. This structure reduces the outward protrusion of the outer edge of the locking section, making the overall chassis more regular and reducing space occupation. At the same time, the bending structure of the upper part of the sidewall can further improve the structural strength of the sidewall, making the connection between the top cover and the sidewall more secure. In addition, by placing the lower edge of the water-retaining edge close to the inwardly folded section, a better-sealed space can be formed between the upper part of the sidewall and the top cover as much as possible. This space increases the path for rainwater to enter the joint between the top cover and the locking section, further improving the waterproof effect.

[0018] In technical solution three, the outer edge of the locking part of the base protrudes beyond the wall surface. When electrical devices need to be installed on this part of the side wall, this structure can shorten the size of the recessed part, thereby avoiding interference with the installation of electrical devices. At the same time, making the outer edges of the locking parts of other parts flush with or recessed from the wall surface can make the edges of the chassis smoother.

[0019] In technical solution four, the top cover and the locking part are connected by a fastening assembly, which includes a fastening nut, a nut sleeve, and a bolt. The nut sleeve is pre-fixed on the base, and the anti-rotation fastening nut is installed on the nut sleeve. After the top cover rests on the locking part, the bolt can be directly screwed to the fastening nut from the top of the top cover. This solves the problem that the fastening nut is difficult to fix from the bottom of the locking part after the water-blocking edge on the top cover blocks the fastening nut.

[0020] In technical solution five, a polygonal mating hole is provided on the locking part. The nut sleeve hooks onto and is tensioned against the mating hole, achieving a fixed connection with the base. No additional fasteners are required, simplifying the installation process of the nut sleeve. The polygonal mating hole allows the nut sleeve and the locking part to form an anti-rotation fit. At the same time, a recessed relief groove is provided at the mating hole. The position of the relief groove corresponds to the position of the edge of the nut sleeve hook. The relief groove prevents the hook structure of the nut sleeve from protruding from the upper surface of the locking part, ensuring that the connection gap between the locking part and the top cover meets the requirements.

[0021] In technical solution six, the nut sleeve is provided with a receiving groove for accommodating the fastening nut, and a hook arm extending upward from the receiving groove. The fastening nut can abut against the groove wall to achieve anti-rotation fit, which is convenient for tightening the bolt. The hook arm can be detachably hooked to the mating hole through elastic deformation, which is convenient for installing the nut sleeve into the mating hole during assembly.

[0022] In technical solution seven, a waterproof strip is installed to further enhance the sealing performance between the locking part and the top cover, preventing rainwater from entering the chassis.

[0023] In technical solution eight, an outwardly inclined sealing ridge is provided on the lower surface of the waterproof strip. When the inclined sealing ridge is pressed, it can better fill the gap and improve the waterproof effect.

[0024] In technical solution nine, a protrusion is provided on the lower surface of the top cover corresponding to the locking part. The protrusion limits the compression of the waterproof strip, avoids excessive compression that could cause the strip to fail, extends the service life of the strip, and optimizes the sealing effect.

[0025] Technical solution ten provides an electrical device that uses the aforementioned waterproof enclosure, which can effectively protect the electrical components inside the device from rainwater corrosion and improve the reliability and service life of the device. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded view of the waterproof chassis according to an embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Top view of the assembled waterproof chassis;

[0029] Figure 3 for Figure 2Schematic diagram of section AA;

[0030] Figure 4 for Figure 2 Schematic diagram of the BB section;

[0031] Figure 5 for Figure 1 A schematic diagram of the middle nut sleeve and the fastening nut;

[0032] Figure 6 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0033] Figure 7 for Figure 3 Enlarged schematic diagram of part B in the middle;

[0034] Figure 8 for Figure 4 An enlarged schematic diagram of section C.

[0035] Explanation of key figure labels:

[0036] Base 10; side wall 11; bottom wall 12; locking part 13; mating hole 131; clearance groove 132; inward retraction part 14; connecting part 15; wall surface 16;

[0037] Top cover 20; Water-retaining edge 21; Protrusion 22;

[0038] Fastening assembly 30; Fastening nut 31; Nut sleeve 32; Receiving groove 321; Hook arm 322; Hook head 323; Limiting flange 324; Bolt 33;

[0039] Waterproof sealing strip 40; sealing ridge 41. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0041] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0042] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0043] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0044] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0045] Example 1

[0046] This embodiment relates to a waterproof enclosure, which can be used to install electrical components and can be used in conjunction with electrical components to form an electrical device. The specific type of electrical device can be selected according to actual needs, and the corresponding electrical components or related accessories can be selected accordingly.

[0047] The waterproof enclosure involved in this embodiment includes a base 10, a top cover 20, several fastening components 30, and waterproof strips 40.

[0048] Among them, reference Figure 1 The base 10 is enclosed by a side wall 11 and a bottom wall 12 to form an installation chamber; the upper edge of the side wall 11 is provided with a locking part 13 that folds outward toward the outside of the base 10; the top cover 20 rests against and is fixed to the locking part 13 to cover the installation chamber; the peripheral edge of the top cover 20 is bent downward to form a water-blocking edge 21, and the water-blocking edge 21 is located outside the locking part 13.

[0049] Specifically, refer to Figure 1 , Figure 1 This is an exploded schematic diagram of the electrical enclosure. Figure 2 This is a schematic diagram showing the assembled state of the electrical enclosure. In this embodiment, directions in this specification and claims are indicated by the front, back, left, right, top, and bottom directions in the accompanying drawings. (Refer to...) Figure 2This is a top view of the aforementioned waterproof enclosure, which has two cross-sectional lines, namely... Figure 3 The AA section shown and Figure 4 The BB section is shown. Furthermore, Figure 6 It shows Figure 1 The enlarged structure of part A in the middle. Figure 7 and Figure 8 It shows Figure 3 and Figure 4 The enlarged structure of parts B and C in the diagram.

[0050] Reference Figure 1 The base 10 has a bottom wall 12 and a side wall 11 connected to each other. The bottom wall 12 is located below the housing and extends horizontally. The side wall 11 is located on the side of the housing, and its lower edge connects to the peripheral edge of the bottom wall 12. In this embodiment, according to the cuboid configuration of the electrical chassis, the side wall 11 can be divided into a front side wall 11, a rear side wall 11, a left side wall 11, and a right side wall 11. In this embodiment, the front side wall 11 of the electrical chassis can be used to install and fix the wiring terminals of electrical components inside the chassis, and protrudes from the front side wall 11 to facilitate connection with other external components via cables. Through the cooperation of the bottom wall 12 and the side wall 11, a mounting chamber is defined on the base 10. The top of the mounting chamber forms an open opening, and the top cover 20 can be placed on the base 10 to cover and close the opening on the base 10, so as to form a sealed chamber inside the waterproof chassis.

[0051] Among them, reference Figure 6 , Figure 7 and Figure 8 A locking portion 13 is formed by folding outwards along the upper edge of the side wall 11 of the base 10. This outward folding refers to the side wall 11, which originally extends vertically, folding outwards relative to the interior of the base 10 at its upper edge. This folded portion extending horizontally, relative to the other vertically extending portions of the side wall 11, constitutes the locking portion 13. The locking portion 13, together with the other portions of the side wall 11 below it, forms the side wall 11. In this embodiment, the locking portion 13 extends horizontally; in other embodiments, the locking portion 13 may also have a certain angle of inclination relative to the horizontal direction.

[0052] The main body of the top cover 20 is a flat plate-like component. A water-retaining edge 21 is formed by bending downwards along the periphery of this plate-like component. This downward bending refers to the sidewall 11, which originally extends horizontally, bending downwards relative to the upper surface of the top cover 20 at its periphery. The portion extending vertically after this bending, relative to the other horizontally extending portions of the top cover 20, constitutes the aforementioned water-retaining edge 21.

[0053] Reference Figure 7 The top cover 20 rests against the locking part 13 of the base 10 from top to bottom, and the part of the top cover 20 that contacts the locking part 13 is the lower surface of the horizontally extended portion of the top cover 20 near the water-retaining edge 21. The size of the top cover 20 is just enough to place the water-retaining edge 21 outside the locking part 13, which is equivalent to covering the locking part 13 inside the top cover 20 through the water-retaining edge 21. After assembly, the top cover 20 can cover the mounting cavity formed by the base 10, thereby initially forming a chassis with a sealed cavity. At the same time, the top cover 20 rests against and is fixed to the locking part 13, and the water-retaining edge 21 is located outside the locking part 13. Because the water-retaining edge 21 bends downward, it covers the connection gap between the top cover 20 and the locking part 13, thereby effectively preventing rainwater from directly entering the joint between the locking part 13 and the top cover 20, improving the waterproof performance of the chassis. Furthermore, the locking part 13 and the water-blocking edge 21 on the base 10 and the top cover 20 can be formed by a simple folding structure, which is simple in structure and easy to manufacture. The water-blocking edge 21 can also limit the movement range of the top cover 20 on the base 10 by cooperating with the locking part 13, which is convenient for positioning and fixing the top cover 20.

[0054] Furthermore, referring to Figure 6 , Figure 7 and Figure 8 The upper part of the side wall 11 is provided with an inwardly recessed part 14 that folds inward toward the base 10. The inwardly recessed part 14 and the locking part 13 are connected by an upwardly extending connecting part 15. The lower edge of the water-blocking edge 21 is close to the inwardly recessed part 14.

[0055] Specifically, the upper part of the side wall 11 first folds inward toward the base 10 to form a horizontally extending recessed portion 14. Then, the inner edge of the side wall 11 folds upward to form a connecting portion 15, and then the upper edge of the connecting portion 15 folds outward to form a locking portion 13. This is equivalent to designing the upper part of the side wall 11 as an "S"-shaped structure that first bends inward, then upward, and finally outward. This structure reduces the outward protrusion of the outer edge of the locking portion 13, making the overall chassis more regular and reducing space occupation. At the same time, the bending structure of the upper part of the side wall 11 further improves the structural strength of the side wall 11, making the connection between the top cover 20 and the side wall 11 more secure.

[0056] In addition, by bringing the lower edge of the water-blocking edge 21 close to the inward-recessed portion 14, a space with a better sealing effect can be formed between the upper part of the side wall 11 and the top cover 20 through the water-blocking edge 21. This space can increase the path of rainwater entering the joint between the top cover 20 and the locking portion 13, further improving the waterproof effect.

[0057] Reference Figure 7 and Figure 8The portion of the sidewall 11 connected to the recessed portion 14 and located below the recessed portion 14 forms a wall surface 16; the base 10 is configured such that at least a portion of the outer edge of the locking portion 13 of the sidewall 11 protrudes from the wall surface 16 of that portion of the sidewall 11, and the outer edge of the locking portion 13 of the other portions of the sidewall 11 is flush with or recessed from the wall surface 16 of that portion of the sidewall 11.

[0058] Specifically, the portion of the side wall 11 located below the recessed portion 14, excluding the recessed portion 14, the connecting portion 15, and the locking portion 13, forms the aforementioned wall surface 16. The wall surface 16 extends substantially in the vertical direction, and its lower edge connects to the bottom wall 12. Figure 7 The diagram shows the positions of the chassis on the left, right, and rear sides, and the positions between the top cover 20 and the side wall 11 of the base 10. Figure 8 The diagram shows the position between the top cover 20 and the side wall 11 of the base 10 at the front of the chassis. It can be seen that the outer edge of the locking part 13 on the front side of the base 10 protrudes beyond the wall surface 16 of the front side wall 11. With the width of the locking part 13 remaining constant, this design reduces the width of the recessed part 14, thus bringing the connecting part 15 closer to the wall surface 16. With this configuration, when electrical components need to be installed on the front side wall 11 of the base 10, even when installed from the inside of the base 10, the reduced width of the recessed part 14 allows more of the rear end of the electrical component to be exposed, facilitating the downward movement of installation tools and preventing the recessed part 14, connecting part 15, and locking part 13 from interfering with the installation of the electrical component.

[0059] Furthermore, the outer edges of the locking portions 13 on the left, right, and rear sides of the base 10 are flush with or recessed from the corresponding wall surfaces 16, which allows the outer surface of the water-retaining edge 21 of the top cover 20 to be approximately flush with the outer surface of the wall surface 16 of the side wall 11, thereby making the edges of the chassis smoother and reducing the space occupied and size of the chassis.

[0060] In addition, refer to Figure 5 , Figure 7 and Figure 8 The fastening assembly 30 includes a fastening nut 31, a nut sleeve 32, and a bolt 33. The nut sleeve 32 is fixed to the base 10 in the rotation direction of the fastening assembly 30. The fastening nut 31 is anti-rotatingly mounted on the nut sleeve 32 and located below the locking part 13 relative to the rotation direction of the fastening assembly 30. The bolt 33 fixes the top cover 20 to the base 10 from above the top cover 20 through threaded engagement with the fastening nut 31.

[0061] Among them, reference Figure 6In this embodiment, the locking part 13 is provided with a plurality of polygonal mating holes 131 extending vertically, and its upper surface is recessed downward at the mating holes 131 to form a relief groove 132; the nut sleeve 32 hooks and tensions against the edge of the mating hole 131 to be fixedly connected to the base 10 in the rotation direction of the fastening assembly 30; the position of the relief groove 132 corresponds to the position of the edge on the mating hole 131 for the nut sleeve 32 to hook. Furthermore, referring to... Figure 5 The nut sleeve 32 is provided with a receiving groove 321 for accommodating the fastening nut 31, and two hook arms 322 extending upward from the receiving groove 321 are positioned opposite each other; the fastening nut 31 forms an anti-rotation fit with the nut sleeve 32 by abutting against the groove wall of the receiving groove 321 in its rotational direction; the hook arms 322 are detachably hooked to the mating hole 131 by elastic deformation.

[0062] Specifically, the top cover 20 and the base 10 are fastened together by a fastening assembly 30. On the locking part 13 located on the upper side of the side wall 11 of the base 10, multiple vertically penetrating mating holes 131 are provided. In this embodiment, the mating holes 131 are rectangular to facilitate the nut sleeve 32 hooking onto their edges. A vertically penetrating through hole is also provided on the top cover 20 at a position corresponding to the mating holes 131. The bolt 33 can pass through the through hole of the top cover 20 and the mating hole 131 on the locking part 13, and then be screwed into the fastening nut 31 in the nut sleeve 32. The bolt 33 can be tightened directly from above the top cover 20. (Refer to...) Figure 5 The fastening nut 31 is installed in the nut sleeve 32, and through the anti-rotation fit between the nut sleeve 32 and the fastening nut 31, the fastening nut 31 can be locked to the bolt 33 by tightening the bolt 33 after it is screwed to the bolt 33.

[0063] Specifically, the nut sleeve 32 has a roughly square receiving groove 321. The shape of the fastening nut 31 is adapted to the shape of the receiving groove 321, and is also roughly square. A threaded hole is provided in the middle of the fastening nut 31, and a through hole corresponding to the position of the threaded hole and extending vertically is provided at the bottom of the receiving groove 321 to facilitate the bolt 33 to protrude from the threaded hole and the through hole. After the fastening nut 31 is installed in the receiving groove 321, when the bolt 33 is tightened, the side of the fastening nut 31 will form an abutment fit with the groove wall of the receiving groove 321, thereby restricting the rotation of the fastening nut 31.

[0064] Furthermore, an upwardly extending hook arm 322 is provided on the upper part of the nut sleeve 32. Two hook arms 322 are symmetrically arranged, and an outwardly folded hook head 323 is provided at the upper end of the hook arm 322. The hook heads 323 of the two hook arms 322 face opposite directions. When installing the nut sleeve 32, the two hook arms 322 can be pinched together to deform them. Then, the two hook arms 322 are passed through the mating hole 131 from bottom to top. Then, the two hook arms 322 are released. Under the elastic action of the hook arms 322 themselves, the two hook heads 323 hook onto the edge of the mating hole 131, so that the nut sleeve 32 hooks onto the locking part 13. At the same time, since the mating hole 131 is polygonal, after the hook heads 323 hook onto the two opposite edges of the mating hole 131, the nut sleeve 32 also forms an anti-rotation fit with the mating hole 131. Furthermore, the lower end of the hook arm 322 of the nut sleeve 32 is connected to the edge of the limiting flange 324 formed by the upward extension and inward bending of the groove wall of the receiving groove 321. Through the limiting flange 324, the fastening nut 31 is restricted in the receiving groove 321 and it is difficult to come out of the receiving groove 321.

[0065] Meanwhile, a recessed relief groove 132 is provided on the upper surface of the locking part 13 at the mating hole 131. The position of the relief groove 132 corresponds to the position of the edge of the mating hole 131 where the hook head 323 of the hook arm 322 is hooked, so that the part of the hook head 323 protruding from the mating hole 131 can fall into the relief groove 132, so that the hook head 323 will not protrude from the upper surface of the locking part 13.

[0066] The top cover 20 and the locking part 13 are connected by a fastening assembly 30, which includes a fastening nut 31, a nut sleeve 32, and a bolt 33. The nut sleeve 32 is pre-fixed on the base 10, and the fastening nut 31 is anti-rotationally mounted on the nut sleeve 32. After the top cover 20 rests on the locking part 13, the bolt 33 can be directly screwed to the fastening nut 31 from above the top cover 20. This solves the problem that the fastening nut 31 is difficult to fix from below the locking part 13 after the water-blocking edge 21 on the top cover 20 blocks it. Furthermore, the locking part 13 is provided with a polygonal mating hole 131. The nut sleeve 32 hooks and is tensioned and held against the mating hole 131, achieving a fixed connection with the base 10 without the need for additional fasteners, simplifying the installation process of the nut sleeve 32. The polygonal mating hole 131 enables the nut sleeve 32 to form an anti-rotation fit with the locking part 13.

[0067] Meanwhile, a recessed relief groove 132 is provided at the mating hole 131. The position of the relief groove 132 corresponds to the position of the hook side of the nut sleeve 32. The relief groove 132 can prevent the hook structure of the nut sleeve 32 from protruding from the upper surface of the locking part 13, and can ensure that the connection gap between the locking part 13 and the top cover 20 meets the requirements. At the same time, the nut sleeve 32 is provided with a receiving groove 321 for accommodating the fastening nut 31, and a hook arm 322 extending upward from the receiving groove 321. The fastening nut 31 can abut against the groove wall of the receiving groove 321 to achieve anti-rotation engagement, which is convenient for tightening the bolt 33. The hook arm 322 can be detachably hooked to the mating hole 131 through elastic deformation, which is convenient for installing the nut sleeve 32 into the mating hole 131 during assembly.

[0068] In addition, refer to Figure 7 and Figure 8 A waterproof strip 40 is arranged in a ring between the locking part 13 and the top cover 20. The lower surface of the waterproof strip 40 is provided with a sealing ridge 41 that extends outward relative to the top cover 20, and the sealing ridge 41 is adapted to abut against the upper surface of the locking part 13.

[0069] Specifically, the waterproof strip 40 can be made of rubber, has a ring-shaped structure, and its shape is adapted to the cuboid shape of the chassis. The waterproof strip 40 is positioned between the locking part 13 and the top cover 20. After the top cover 20 is fixed to the base 10 by the fastening assembly 30, as the bolts 33 are tightened, the top cover 20 and the locking part 13 will compress the waterproof strip 40, thereby sealing the gap between the top cover 20 and the locking part 13. Furthermore, the lower surface of the waterproof strip 40 is provided with an outwardly inclined sealing ridge 41. The inclined sealing ridge 41 can better fill the gap when compressed, improving the waterproof effect.

[0070] Furthermore, referring to Figure 7 and Figure 8 The lower surface of the top cover 20 has several protrusions 22 corresponding to the locking part 13. These protrusions 22 rest against the upper surface of the locking part 13 to limit the deformation of the waterproof adhesive strip 40 under pressure. The protrusions 22 can be formed by pressing the main body of the top cover 20 downwards, protruding from the lower surface of the top cover 20 and corresponding to the mating holes 131. They can precisely abut against the hook head 323 of the hook arm 322 of the nut sleeve 32, thereby limiting the upward movement of the nut sleeve 32. Furthermore, since the protrusions 22 abut against the upper surface of the locking part 13, and also protrude from the lower surface of the top cover 20, a gap is formed between the lower surface of the top cover 20 and the upper surface of the locking part 13. This gap limits the compression of the waterproof adhesive strip 40, preventing excessive compression that could lead to strip failure, extending the strip's lifespan, and optimizing the sealing effect.

[0071] Example 2

[0072] Example 2 relates to an electrical device comprising the waterproof enclosure described in Example 1, and electrical components located within the enclosure. The use of the aforementioned waterproof enclosure effectively protects the electrical components within the device from rainwater corrosion, thereby improving the reliability and service life of the device.

[0073] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A waterproof chassis, characterized in that, include: The base (10) is formed by the side wall (11) and the bottom wall (12) to create an installation chamber; The upper edge of the side wall (11) is provided with a locking part (13) that folds outward toward the base (10); A top cover (20) is attached to and fixed to the locking part (13) to cover the mounting chamber; the peripheral edge of the top cover (20) is bent downward to form a water-blocking edge (21), which is located outside the locking part (13).

2. The waterproof chassis as described in claim 1, characterized in that, The upper part of the side wall (11) is provided with an inwardly recessed part (14) that folds inward toward the base (10). The inwardly recessed part (14) and the locking part (13) are connected by an upwardly extending connecting part (15). The lower edge of the water-blocking edge (21) is close to the inwardly recessed part (14).

3. A waterproof chassis as described in claim 2, characterized in that, The portion of the sidewall (11) connected to the recessed portion (14) and located below the recessed portion (14) forms a wall surface (16); the base (10) is configured such that at least a portion of the locking portion (13) of the sidewall (11) protrudes from the wall surface (16) of that portion of the sidewall (11), and the outer edge of the locking portion (13) of the other portions of the sidewall (11) is flush with or recessed from the wall surface (16) of that portion of the sidewall (11).

4. A waterproof chassis as described in claim 2, characterized in that, It also includes several fastening components (30), each fastening component (30) including a fastening nut (31), a nut sleeve (32), and a bolt (33); the nut sleeve (32) is fixed to the base (10) in the rotation direction of the fastening component (30), the fastening nut (31) is anti-rotatingly mounted on the nut sleeve (32) relative to the rotation direction of the fastening component (30) and located below the locking part (13), and the bolt (33) is fixed to the top cover (20) and the base (10) from above by thread engagement with the fastening nut (31).

5. A waterproof chassis as described in claim 4, characterized in that, The locking part (13) is provided with a plurality of polygonal mating holes (131) that run through the vertical direction, and its upper surface is recessed downward at the mating holes (131) to form a relief groove (132); the nut sleeve (32) hooks and tensions against the edge of the mating hole (131) to be fixed to the base (10) in the rotation direction of the fastening assembly (30); the position of the relief groove (132) corresponds to the position of the edge on the mating hole (131) for the nut sleeve (32) to hook.

6. A waterproof chassis as described in claim 5, characterized in that, The nut sleeve (32) is provided with a receiving groove (321) for accommodating the fastening nut (31), and two hook arms (322) are provided upwardly from the receiving groove (321); the fastening nut (31) forms an anti-rotation fit with the nut sleeve (32) by abutting against the groove wall of the receiving groove (321) in its rotational direction; the hook arms (322) are detachably hooked to the mating hole (131) by elastic deformation.

7. A waterproof chassis as described in claim 2, characterized in that, It also includes a waterproof strip (40), which is arranged in a ring between the locking part (13) and the top cover (20).

8. A waterproof chassis as described in claim 7, characterized in that, The lower surface of the waterproof strip (40) is provided with a sealing ridge (41) that extends outward relative to the top cover (20), and the sealing ridge (41) is adapted to abut against the upper surface of the locking part (13).

9. A waterproof chassis as described in claim 7, characterized in that, The lower surface of the top cover (20) is provided with a plurality of protrusions (22) corresponding to the locking part (13); the protrusions (22) rest against the upper surface of the locking part (13) to limit the degree of deformation of the waterproof strip (40) after being compressed.

10. An electrical device comprising a plurality of electrical components, characterized in that, The electrical components are housed in a waterproof enclosure as described in any one of claims 1-9.

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