A protective cover structure and an electric appliance

Abstract

The present application relates to the technical fields of electric energy conversion and control device, and specifically relates to a protective cover structure and an electric appliance, wherein the cavity is physically isolated into a closed mounting cavity and a heat dissipation cavity in communication with the outside by a heat dissipation main body, while ensuring that the circuit assembly is protected from external dust and moisture intrusion, the internal heat is conducted and dissipated to the outside by the heat dissipation fins extending to the heat dissipation cavity, effectively balancing high protection level and high efficiency heat dissipation. By setting the heat dissipation part in the heat conduction filling area and adapting and fitting with the back surface of the circuit assembly, the gap caused by the thickness difference of the patch components is effectively filled, thereby reducing the contact thermal resistance, and further improving the efficiency of heat conduction to the heat dissipation main body, reducing the working temperature of the circuit assembly, and improving the operation stability and service life.

Description

Technical Field

[0001] This invention relates to the field of electrical energy conversion and control devices, specifically a protective cover structure and electrical components. Background Technology

[0002] Currently, in fields such as electronic equipment, electrical control cabinets, outdoor lighting fixtures, and monitoring equipment, protective covers are often required for circuit components to provide protection, dustproofing, waterproofing, and safety isolation. Traditional protective covers are typically one-piece sealed shells containing circuit boards, power modules, and other heat-generating components. During operation, these components generate a significant amount of heat. If this heat is not dissipated in time, it can lead to excessively high internal temperatures, affecting the normal operation of circuit components, shortening their lifespan, and even causing malfunctions.

[0003] To balance protection and heat dissipation, existing technologies typically involve directly creating heat dissipation holes on the housing to promote air convection and allow the heat generated by the heating element to be directly dissipated to the outside. However, external dust and moisture can easily enter the housing through the heat dissipation holes, contaminating or corroding circuit components and reducing the protection level. This makes the technology particularly unsuitable for use in humid, dusty, or harsh outdoor environments.

[0004] In existing technologies, heat sinks or cooling fans are installed inside the housing, and the heat sinks and circuit components are arranged in the same sealed cavity. Since the heat sinks are also in a sealed environment, heat can only be slowly conducted to the outside through the housing wall, resulting in low heat dissipation efficiency. If a fan is added, it increases cost, energy consumption, and noise, and the fan itself is also susceptible to dust and may fail.

[0005] Therefore, there is an urgent need for a protective shield structure that can both ensure protective effectiveness and efficiently dissipate heat, in order to solve the problem that heat dissipation and protection are difficult to balance in existing technologies. Summary of the Invention

[0006] Regarding the aforementioned technical problem that existing protective shield structures cannot simultaneously achieve both protection and heat dissipation, the technical solution adopted by this invention to solve this problem is: A protective cover structure includes a housing, the housing having a cavity, the housing having a connecting housing and a cover that surround the cavity, a heat dissipation module located in the cavity, and a first opening of the housing located on one side for a circuit assembly to extend into the cavity. The cavity includes a mounting cavity for accommodating the circuit assembly and communicating with the first opening of the housing, and a heat dissipation cavity. The heat dissipation module is located between the mounting cavity and the heat dissipation cavity. The heat dissipation module includes a heat dissipation body and a heat dissipation fin connected to the heat dissipation body. The heat dissipation fin extends at least partially beyond the mounting cavity and into the heat dissipation cavity. The mounting cavity is located on one side of the heat dissipation body, and the heat dissipation cavity is located on the other side of the heat dissipation body. The heat dissipation body separates the mounting cavity and the heat dissipation cavity. The connecting housing and / or the cover have heat dissipation holes communicating with the heat dissipation cavity. A thermally conductive filling area is provided between the heat dissipation module and the circuit assembly, and a heat dissipation part is located within the thermally conductive filling area. The heat dissipation part is used to fit and adhere to the back of the circuit assembly and conduct heat to the heat dissipation body.

[0007] Furthermore, in some embodiments of the present invention, the connecting housing is provided with a connecting opening located between the mounting cavity and the heat dissipation cavity, a connecting housing abutting part for abutting against the heat dissipation body, and a connecting housing positioning part for limiting the heat dissipation body. The heat dissipation body is provided with a heat dissipation body connecting part that cooperates with the connecting housing positioning part. The area of ​​the heat dissipation body is larger than the orthographic projection area of ​​the connecting opening.

[0008] Furthermore, in some embodiments of the present invention, the other side of the connecting housing is provided with a second opening of the connecting housing for the heat dissipation body to extend into. The connecting housing abutment portion is located on the side of the connecting opening near the heat dissipation cavity, and the connecting housing positioning portion is located on the side of the connecting opening near the mounting cavity. The heat dissipation body passes through the second opening of the connecting housing from the heat dissipation cavity toward the connecting opening and abuts against the connecting housing abutment portion. The connecting housing positioning portion includes a first connecting hole of the connecting housing for a first fastener to pass through, and the heat dissipation body connecting portion includes a first connecting hole of the heat dissipation body for a first fastener to pass through.

[0009] Furthermore, in some embodiments of the present invention, the heat sink is provided in multiple and spaced apart, and a heat sink through groove is formed between adjacent heat sinks. The long side of the heat sink extends horizontally along the short side of the heat dissipation body. The extension length of the long side of the heat sink is greater than the short side length of the connecting opening. The distance between the heat sink on one side of the heat dissipation body end and the heat sink on the other side of the heat dissipation body end is greater than the long side length of the connecting opening. The short side of the heat sink extends vertically along the axial direction of the heat dissipation body. The heat sink protrudes to the lower side of the connecting housing and is located in the heat dissipation cavity.

[0010] Furthermore, in some embodiments of the present invention, the connecting housing is provided with a first extending side near the central axis of the connecting housing, a second extending side away from the central axis of the connecting housing, an extending connecting groove formed by the first extending side and the second extending side, and a connecting housing limiting part; the cover is provided with a cover engaging part extending into the extending connecting groove and a cover connecting part cooperating with the connecting housing limiting part.

[0011] Furthermore, in some embodiments of the present invention, the connecting housing limiting portion includes a first extending side connecting hole located on the first extending side, the cover connecting portion includes a cover engaging portion connecting hole located on the cover engaging portion, the second extending side is provided with a second extending side connecting hole to avoid the second fastener or to allow the second fastener to pass through, and the inner side of the first extending side is provided with a protrusion that communicates with the first extending side connecting hole and protrudes toward the central axis of the connecting housing.

[0012] Furthermore, in some embodiments of the present invention, the heat dissipation holes include side heat dissipation holes disposed on the side of the cover and bottom heat dissipation holes disposed on the bottom of the cover. Multiple side heat dissipation holes and multiple bottom heat dissipation holes are provided. The multiple bottom heat dissipation holes are disposed opposite to the through slots of the heat sink. The cross-sectional area of ​​the mounting cavity is larger than the cross-sectional area of ​​the heat dissipation cavity. The heat dissipation module is provided with a heat dissipation body receiving cavity. The heat dissipation body receiving cavity is located on the side of the heat dissipation body facing the cover or the heat dissipation holes. The heat dissipation body receiving cavity is provided with an airflow acceleration component. The heat dissipation body receiving cavity is at least partially disposed within the closed or semi-closed area formed by the interconnection of the heat dissipation body and the heat sink.

[0013] Furthermore, in some embodiments of the present invention, the heat dissipation body is provided with a heat dissipation body positioning hole, and the heat dissipation part is provided with a heat dissipation part connection hole that mates with the heat dissipation body positioning hole. The heat dissipation part includes one or more combinations of metal sheet, thermal adhesive, thermal pad, thermal gel, graphite heat dissipation sheet, thermal grease, thermal ceramic sheet, phase change heat pipe, and heat spreader. The connecting shell is made of plastic material, the cover is made of plastic material, and the heat dissipation module is made of metal material.

[0014] Further, in some embodiments of the present invention, the connecting housing includes an upper housing and a lower housing that surround and form the mounting cavity. The upper housing is provided with a first snap-fit ​​groove near the central axis of the upper housing, a second snap-fit ​​groove away from the central axis of the upper housing, an upper housing connecting post located in the second snap-fit ​​groove, a plurality of upper housing reinforcing ribs extending upward, and an upper housing groove located between adjacent upper housing reinforcing ribs. The lower housing is provided with a first engaging portion into which the first snap-fit ​​groove extends, a second engaging portion into which the second snap-fit ​​groove extends, a lower housing connecting hole that mates with the upper housing connecting post, a plurality of peripheral reinforcing ribs located on the periphery of the lower housing, and a lower housing groove located between adjacent peripheral reinforcing ribs. The housing first opening and the connecting opening are located in the lower housing. The upper housing reinforcing ribs are arranged in a straight line, an L-shape, an arc shape, an arc shape, or a wave shape. The peripheral reinforcing ribs are arranged in a straight line, an L-shape, an arc shape, or a wave shape. The outer side of the peripheral reinforcing ribs narrows from the mounting cavity toward the heat dissipation cavity. A sealing element is provided between the upper housing and the lower housing.

[0015] Another object of the present invention is to provide an electrical appliance including the protective cover structure described above.

[0016] The beneficial effects of this invention are as follows: This invention physically isolates the cavity into a sealed mounting cavity and a heat dissipation cavity connected to the outside by a heat dissipation body. This protects the circuit components from external dust and moisture while utilizing heat sinks extending into the heat dissipation cavity to conduct internal heat and dissipate it to the outside, effectively balancing high protection levels with efficient heat dissipation. By setting a heat dissipation section within the thermally conductive filling area and fitting it to the back of the circuit components, gaps caused by differences in the thickness of surface-mount components are effectively filled, thereby reducing contact thermal resistance and improving the efficiency of heat conduction to the heat dissipation body. This lowers the operating temperature of the circuit components and enhances their operational stability and service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a protective cover structure according to the present invention.

[0018] Figure 2 This is a top view of a protective cover structure according to the present invention.

[0019] Figure 3 for Figure 2 AA sectional view.

[0020] Figure 4 for Figure 2 BB cross-sectional view and enlarged partial view.

[0021] Figure 5 This is an exploded view of a protective cover structure according to the present invention.

[0022] Figure 6 for Figure 5 Enlarged view of part C.

[0023] Figure 7 This is an exploded view from another angle of a protective cover structure according to the present invention.

[0024] Figure 8 This is a schematic diagram and a partial enlarged view of the lower shell of a protective cover structure according to the present invention.

[0025] Figure 9 This is a schematic diagram of the lower shell of a protective cover structure according to the present invention.

[0026] Figure 10 This is a schematic diagram and a partial enlarged view of the upper shell of a protective cover structure according to the present invention. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention, such as (up, down, left, right, front, back, etc.), are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The protective cover structure shown includes a housing 1, a cavity 2, a connecting housing 3 and a cover 4 that enclose the cavity 2, a heat dissipation module 5 located in the cavity 2, and a first opening 31 on one side of the cavity 2 into which a circuit assembly 6 extends. The cavity 2 includes a mounting cavity 21 for accommodating the circuit assembly 6 and communicating with the first opening 31, and a heat dissipation cavity 22 communicating with the mounting cavity 21 and the outside of the housing 1. The heat dissipation module 5 is located between the mounting cavity 21 and the heat dissipation cavity 22, and includes a heat dissipation body 51 and heat dissipation fins 52 connected to the heat dissipation body 51. The heat sink 52 extends at least partially to the outside of the mounting cavity 21 and into the heat dissipation cavity 22. The mounting cavity 21 is located on one side of the heat dissipation body 51, and the heat dissipation cavity 22 is located on the other side of the heat dissipation body 51. The heat dissipation body 51 separates the mounting cavity 21 and the heat dissipation cavity 22. The connecting housing 3 and / or the cover 4 are provided with heat dissipation holes 7 communicating with the heat dissipation cavity 22. A thermally conductive filling area 100 and a heat dissipation part 211 located in the thermally conductive filling area 100 are provided between the heat dissipation module 5 and the circuit assembly 6. The heat dissipation part 211 is used to fit and adhere to the back of the circuit assembly 6 and conduct heat to the heat dissipation body 51.

[0031] This invention divides the cavity of the housing into an installation cavity and a heat dissipation cavity, and uses the heat dissipation body of the heat dissipation module to achieve physical isolation between the two. This allows the installation cavity that houses the circuit components to remain relatively sealed, preventing external dust and moisture from entering the installation cavity through the heat dissipation holes, thus ensuring the protection level and operational reliability of the circuit components.

[0032] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by providing a positioning hole for the heat dissipation body on the heat dissipation body and adding a heat dissipation part connected thereto in the mounting cavity, the precise alignment and stable connection between the internal heat conduction structure and the external heat dissipation body are achieved, avoiding the problem of loose fit or uneven heat conduction caused by assembly misalignment.

[0033] Specifically, the circuit assembly extends into the mounting cavity through the first opening of the housing, and a cover or other components may be provided on the first opening of the housing to seal the mounting cavity.

[0034] Meanwhile, the heat sink of the heat dissipation module extends at least partially beyond the outside of the mounting cavity and towards the heat dissipation cavity. Since the heat dissipation cavity is connected to the outside of the housing, the heat generated by the circuit components during operation can be directly conducted to the heat sink through the heat dissipation body, and then dissipated rapidly to the external environment through the heat dissipation holes via convection within the heat dissipation cavity. The protective cover structure of this invention does not rely on forced air cooling inside the mounting cavity, and also avoids the reduction in protection level caused by opening heat dissipation holes on the mounting cavity, which is beneficial for simultaneously meeting the airtight protection requirements of the circuit components and the heat dissipation requirements under continuous operation.

[0035] Alternatively, in some embodiments, such as Figure 3 As shown, the cavity is separated by the heat dissipation body. The upper side of the heat dissipation body is the mounting cavity, and the lower side of the heat dissipation body is the heat dissipation cavity.

[0036] Optionally, in some embodiments, the connecting shell and the cover form a cavity, and the connecting shell and the cover can be joined by an abutment between their end faces, or the cover can be fitted onto the outside of the connecting shell, or the connecting shell can be fitted onto the outside of the cover.

[0037] Optionally, in some embodiments, heat dissipation holes are provided in the connecting housing, in which case the height of the heat dissipation body is higher than the bottom of the connecting housing, and heat can be transferred from the side of the connecting housing to the outside.

[0038] Optionally, in some embodiments, heat dissipation holes are provided on the cover, in which case the height of the heat dissipation body is higher than the bottom of the cover, and heat can be transferred from the side or bottom of the cover to the outside.

[0039] Optionally, in some embodiments, heat dissipation holes are provided in the connecting housing and the cover, in which case the connecting housing and the cover are in a nested relationship, and heat can be transferred from the side of the cover through the side of the connecting housing to the outside, or heat can be transferred from the side of the connecting housing through the side of the cover to the outside.

[0040] Optionally, in some embodiments, the heat dissipation cavity is partially connected to the mounting cavity, and the heat dissipation body is connected to the back of the mounting cavity, so that most of the heat is conducted to the surface of the heat dissipation body through the inner wall of the mounting cavity, and part of the heat is conducted to the surface of the heat dissipation body through the air.

[0041] Optionally, in some embodiments, the heat dissipation cavity is connected to the mounting cavity, the heat dissipation body extends into the mounting cavity, and the heat in the mounting cavity is conducted to the surface of the heat dissipation body through airflow.

[0042] Optionally, in some embodiments, the heat dissipation cavity is connected to the mounting cavity, and the heat dissipation body is located on the lower side of the mounting cavity. When heat moves from the mounting cavity to the heat dissipation cavity, it can be conducted to the surface of the heat dissipation body.

[0043] Optionally, in some embodiments, the heat dissipation cavity is in communication with the mounting cavity and the external environment.

[0044] Optionally, in some embodiments, a fan assembly or a suction assembly may be provided inside the heat dissipation cavity to transfer heat from the heat dissipation cavity to the outside or other cooling devices.

[0045] Specifically, in this embodiment, the heat dissipation holes are used to transfer heat from the heat dissipation cavity to the outside.

[0046] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown has a connecting housing 3 with a connecting opening 33 located between the mounting cavity 21 and the heat dissipation cavity 22, a connecting housing abutting part 34 for abutting against the heat dissipation body 51, and a connecting housing positioning part 35 for limiting the heat dissipation body 51. The heat dissipation body 51 has a heat dissipation body connecting part 511 that cooperates with the connecting housing positioning part 35. The frontal projection area of ​​the heat dissipation body 51 is larger than the frontal projection area of ​​the connecting opening 33.

[0047] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by providing a connecting housing abutment part and a connecting housing positioning part on the connecting housing, and cooperating with the heat dissipation body connecting part of the heat dissipation body, the heat dissipation body is positioned and securely assembled at the connecting opening, which can prevent the heat dissipation module from shifting position when the equipment is running or subjected to vibration.

[0048] Meanwhile, the area of ​​the heat dissipation body is limited to be larger than the area of ​​the connection opening, so that the heat dissipation body can completely cover and extend beyond the edge of the connection opening. Combined with its fit with the connecting shell, a physical barrier is formed between the mounting cavity and the heat dissipation cavity, maintaining an effective separation between the mounting cavity and the heat dissipation cavity. This further enhances the structural sealing between the two chambers, preventing dust or moisture in the heat dissipation cavity from seeping into the mounting cavity through the gaps at the edge of the connection opening, thus ensuring the isolation effect and protective performance of the overall structure.

[0049] Optionally, in some embodiments, the connecting housing positioning part and the heat dissipation body connecting part can be connected and fitted by one or more of the following methods: threaded connection, snap-fit ​​connection, magnetic connection, mortise and tenon connection, adhesive bonding, welding connection, riveting connection, fastener connection, column groove connection, and interference fit.

[0050] like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown has a second opening 32 on the other side of the connecting housing 3 for the heat dissipation body 51 to extend into. The connecting housing abutment part 34 is located on the side of the connecting opening 33 near the heat dissipation cavity 22. The connecting housing positioning part 35 is located on the side of the connecting opening 33 near the mounting cavity 21. The heat dissipation body 51 passes through the second opening 32 of the connecting housing from the heat dissipation cavity 22 toward the connecting opening 33 and abuts against the connecting housing abutment part 34. The connecting housing positioning part 35 includes a first connecting hole 351 of the connecting housing for a first fastener to pass through. The heat dissipation body connecting part 511 includes a first connecting hole 5111 of the heat dissipation body for a first fastener to pass through.

[0051] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by defining the connecting housing abutment portion and the connecting housing positioning portion as being located on opposite sides of the connecting opening, and in conjunction with the setting of the second opening of the connecting housing, the unidirectional assembly path of the heat dissipation body is defined. During actual assembly, the heat dissipation body penetrates from one side of the heat dissipation cavity and directly abuts against the connecting housing abutment portion, enabling rapid structural positioning and error-proof limiting. Subsequently, a first fastener passes through the aligned first connecting hole of the connecting housing and the first connecting hole of the heat dissipation body for mechanical locking. This invention not only simplifies the blind insertion alignment process and improves production assembly efficiency, but also, through the combination of unidirectional abutment and fastener locking, ensures a uniform and stable compression state between the heat dissipation body and the connecting housing at the joint, further enhancing the connection strength and edge sealing of the connection position, thereby more reliably maintaining the airtight isolation effect of the mounting cavity.

[0052] Optionally, in some embodiments, the first fastener is a screw or bolt.

[0053] Optionally, in some embodiments, if the circuit components are located on the upper side of the heat dissipation body, then the connecting housing abutment is located on the lower side of the connecting opening.

[0054] Optionally, in some embodiments, the connecting housing abutment portion may be disposed along the periphery of the connecting opening and abut against the end face of the heat dissipation body, and the connecting housing positioning portion may be connected to the upper side of the heat dissipation body.

[0055] Optionally, in some embodiments, the connecting housing abutment portion may be disposed on the lower side of the connecting opening and connected to the side of the heat dissipation body, and the connecting housing positioning portion may be connected to the upper side of the heat dissipation body.

[0056] Optionally, in some embodiments, the heat dissipation body covers the underside of the connection opening.

[0057] Optionally, in some embodiments, the heat dissipation body abuts against the lower side of the connection opening, and there is a gap or other components connecting the heat dissipation body and the connection opening.

[0058] like Figure 3 , Figure 4 , Figure 5 and Figure 7The protective cover structure shown includes multiple heat sinks 52 spaced apart, with heat sink through slots 521 formed between adjacent heat sinks 52. The long side of each heat sink 52 extends horizontally along the short side of the heat dissipation body 51, and the length of the long side of each heat sink 52 is greater than the length of the short side of the connecting opening 33. The distance between the heat sink 52 on one side of the end of the heat dissipation body 51 and the heat sink 52 on the other side of the end of the heat dissipation body 51 is greater than the length of the long side of the connecting opening 33. The short side of each heat sink 52 extends vertically along the axial direction of the heat dissipation body 51. Each heat sink 52 protrudes to the lower side of the connecting housing 3 and is located within the heat dissipation cavity 22.

[0059] Specifically, by setting multiple spaced heat sinks and forming heat sink slots, the heat exchange surface area can be increased, and a smooth channel for airflow convection can be provided, thereby improving the overall heat dissipation efficiency.

[0060] Specifically, the horizontal extension length of the heat sink and its overall distribution span are both greater than the short and long sides of the connection opening, so that the size range of the heat dissipation structure can fully cover and exceed the connection opening area, maximizing the use of local space structure to increase heat dissipation.

[0061] In addition, the heat sink extends vertically along the axial direction and protrudes to the lower side of the connecting housing, allowing the heat dissipation part to be more directly and fully exposed to the airflow or external environment, reducing the airflow resistance on the heat dissipation path, further enhancing the ability to conduct and dissipate heat outward, which is more conducive to maintaining the internal circuit components operating within a suitable temperature range.

[0062] In summary, this invention improves the space utilization and heat exchange uniformity inside the heat dissipation cavity without increasing the size of the connection opening or the area of ​​the heat dissipation body, thereby improving the overall heat dissipation performance.

[0063] like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown has a connecting housing 3 with a first extending edge 36 near the central axis of the connecting housing 3, a second extending edge 37 away from the central axis of the connecting housing 3, an extending connecting groove 38 formed by the first extending edge 36 and the second extending edge 37, and a connecting housing limiting part 39. The cover body 4 has a cover body engaging part 41 that extends into the extending connecting groove 38 and a cover body connecting part 42 that cooperates with the connecting housing limiting part 39.

[0064] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by providing an extension connecting groove formed by the first extension edge and the second extension edge on the connecting housing, and by having the cover body engaging part of the cover body extend into the extension connecting groove, a nested insertion structure is formed at the interface between the connecting housing and the cover body, thereby effectively extending the physical gap path from the external environment to the interior of the housing, playing a role in structural water and dust blocking, thereby improving the overall sealing and protective performance of the protective cover.

[0065] Furthermore, by combining the connecting housing limiting part with the cover connecting part, not only is the guiding and positioning between the connecting housing and the cover realized during the assembly process, but it can also provide reliable mechanical limiting for the cover after assembly, preventing relative misalignment due to external force or vibration, thus ensuring the long-term stability of the sealing interface at the joint and the reliability of the overall assembly.

[0066] Optionally, in some embodiments, the connecting housing limiting part and the cover connecting part can be connected and fitted by one or more of the following methods: threaded connection, snap-fit ​​connection, magnetic connection, mortise and tenon connection, adhesive bonding, welding connection, riveting connection, fastener connection, column groove connection, and interference fit.

[0067] like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown includes a connecting housing limiting part 39 with a first extension side connecting hole 361 located on the first extension side 36, a cover connecting part 42 with a cover engaging part connecting hole 421 located on the cover engaging part 41, a second extension side 37 with a second extension side connecting hole 371 for avoiding or allowing the second fastener 12 to pass through, and a protrusion 362 on the inner side of the first extension side 36 that communicates with the first extension side connecting hole 361 and protrudes toward the central axis of the connecting housing 3.

[0068] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, the mechanical locking and positioning of the connecting shell and the cover body by fasteners is achieved through the cooperation of the first extension edge connecting hole and the cover body engaging part connecting hole. The second extension edge connecting hole provides a clearance passage for the insertion of the second fastener or the operation of assembly tools, avoiding interference of the extension structure with the assembly process, thereby simplifying the assembly process and improving assembly efficiency.

[0069] In addition, the protrusions on the inner side of the first extension edge increase the depth and wall thickness of the connection hole in the first extension edge. Without increasing the overall thickness of the housing or the cost of injection molding or die casting, the effective length of the fastener under stress is extended, reducing the risk of stripping or cracking due to thinner material, and enhancing the pull-out strength of the connection position and the long-term reliability of the overall structure locking.

[0070] Optionally, in some embodiments, the second fastener is a screw or bolt.

[0071] like Figure 1 , Figure 3 , Figure 4 and Figure 5 , Figure 7 The protective cover structure shown includes heat dissipation holes 7, which include side heat dissipation holes 71 on the side of the cover body 4 and bottom heat dissipation holes 72 on the bottom of the cover body 4. Both the side heat dissipation holes 71 and the bottom heat dissipation holes 72 are provided in multiples. The multiple bottom heat dissipation holes 72 are arranged opposite to the heat dissipation fin through groove 521. The horizontal cross-sectional area of ​​the mounting cavity 21 is larger than the horizontal cross-sectional area of ​​the heat dissipation cavity 22.

[0072] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by providing multiple heat dissipation holes on the sides and bottom of the cover, a multi-directional airflow exchange path can be constructed between the heat dissipation cavity and the external environment, which is beneficial to utilize the physical property of hot air rising to form natural convection and accelerate the discharge of internal heat flow.

[0073] Specifically, multiple heat dissipation holes at the bottom of the cover are arranged opposite to the through slots of the heat sink, so that the external airflow can be directly introduced into the gap between the heat sinks through the shortest path that is relatively vertical and unobstructed, reducing airflow turning losses. This invention reduces the structural resistance of airflow conduction and reduces local heat accumulation in the heat dissipation cavity, thereby improving the convective heat transfer efficiency between the heat dissipation module and the air.

[0074] Furthermore, the horizontal cross-sectional area is the cross-sectional area perpendicular to the height of the housing. This limits the cross-sectional area of ​​the mounting cavity to be larger than that of the heat dissipation cavity. This allows for priority to ensure the arrangement space of the heat-generating circuit components without increasing the overall size of the protective cover, thereby reducing the basic heat density within the sealed mounting cavity. This achieves a reasonable balance between the utilization rate of internal space and the external heat dissipation and exhaust requirements of the overall structure. When the projected area of ​​the heat sink is larger than the connection opening, the heat dissipation cavity formed by the cover and the connecting housing can accommodate the layout of the heat sink. The heat dissipation holes located in the connecting housing or the cover can be closer to the heat dissipation module, thereby improving the heat exchange efficiency.

[0075] like Figure 3 , Figure 5 , Figure 7 As shown, the heat dissipation module 5 is provided with a heat dissipation body receiving cavity 513. The heat dissipation body receiving cavity 513 is located on the side of the heat dissipation body facing the cover 4 or the heat dissipation hole 7. The heat dissipation body receiving cavity 513 is provided with an airflow acceleration component 5131. The heat dissipation body receiving cavity 513 is at least partially located in the closed or semi-closed area formed by the heat dissipation body 51 and the heat dissipation fin 52 after they are connected to each other.

[0076] Alternatively, in some embodiments, the airflow acceleration component may be a fan, a micro air pump, a turbine-type airflow acceleration device, etc.

[0077] Optionally, in some embodiments, the airflow acceleration component is fixed to the back side of the heat sink body by fasteners such as screws, and the heat sink body is provided with corresponding screw connection holes and wire passage holes.

[0078] Specifically, the airflow acceleration component can accelerate the movement of heat from the heat dissipation body towards the heat dissipation holes, thereby improving the heat exchange efficiency of the heat dissipation module.

[0079] Optionally, in some embodiments, the airflow acceleration component accelerates the airflow towards the heat dissipation holes on the side of the heat dissipation body.

[0080] Optionally, in some embodiments, the airflow acceleration component accelerates the airflow towards the shroud below the heat dissipation body.

[0081] Optionally, in some embodiments, the heat dissipation body receiving cavity with an opening allows the airflow acceleration component to extend into it. The heat dissipation body receiving cavity is located near the center of the heat dissipation body and is within a closed rectangular area enclosed by the heat dissipation body and multiple heat sinks.

[0082] Optionally, in some embodiments, the heat dissipation body receiving cavity with an opening allows the airflow acceleration component to extend into it. The heat dissipation body receiving cavity is located near the edge of the heat dissipation body and is within a semi-closed rectangular area enclosed by the heat dissipation body and the heat sink.

[0083] like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown includes a heat dissipation body 51 with a heat dissipation body positioning hole 512, and a heat dissipation part 211 with a heat dissipation part connection hole 2111 that mates with the heat dissipation body positioning hole 512. The heat dissipation part 211 includes one or more of the following combinations: metal sheet, thermal adhesive, thermal pad, thermal gel, graphite heat sink, thermal grease, thermal ceramic sheet, phase change heat pipe, and heat spreader. The connecting shell 3 is made of plastic, the cover 4 is made of plastic, and the heat dissipation module 5 is made of metal.

[0084] Specifically, the heat dissipation body is provided with a heat dissipation body positioning hole, and the heat dissipation part is provided with a corresponding heat dissipation part connection hole. The two are fixedly connected by a third fastener, thereby forming a detachable mechanical connection between the heat dissipation part and the heat dissipation body. This not only ensures the stability of the heat dissipation part in the working state and prevents loosening or misalignment due to vibration or thermal expansion and contraction, but also facilitates the replacement or reinstallation of the heat dissipation part during manufacturing or later maintenance.

[0085] Specifically, the heat dissipation unit is directly fitted to the back of the circuit components. Utilizing highly thermally conductive media such as metal sheets, thermal adhesive, thermal pads, thermal gel, graphite heat sinks, thermal grease, thermal ceramic sheets, phase change heat pipes, and vapor chambers, it can directly conduct the heat generated by the circuit components during operation to the heat dissipation unit. This shortens the heat transfer path from the heat source to the heat dissipation unit, effectively avoids the air insulation effect in the sealed mounting cavity, and thus improves the efficiency of heat transfer from the heat source to the outside.

[0086] Meanwhile, the heat dissipation section adopts specific forms such as metal sheets or thermal adhesive, or combinations thereof, which facilitates flexible selection based on the surface morphology and assembly tolerances of circuit components in actual production. This ensures sufficient contact of the thermal interface while taking into account the structural adaptability of the internal component assembly and the reliability of long-term operation.

[0087] Optionally, in some embodiments, the metal sheet is made of materials such as aluminum sheet, copper sheet, iron sheet, aluminum alloy sheet, copper alloy sheet, or iron alloy sheet; the thermal adhesive is an adhesive; the thermal pad is a flexible sheet material filled with thermally conductive filler; the thermal gel is a semi-solid material between thermally conductive grease and thermally conductive pad; the fluid thermally conductive grease can fill the microscopic gaps between the circuit components and the heat dissipation body to reduce contact thermal resistance; the thermally conductive phase change material undergoes a phase change when it reaches a specific operating temperature, which can improve the adhesion of the interface and the heat transfer efficiency; the evaporation end of the heat pipe or vapor chamber is used as the heat dissipation part, and the heat can be quickly transferred to the heat dissipation body by utilizing the phase change heat transfer of the internal working fluid; when electrical insulation is required on the back of the circuit components, thermally conductive ceramic sheets such as alumina ceramic sheets, aluminum nitride ceramic sheets, mica sheets, etc. can be coated with thermally conductive grease; the thermally conductive graphite sheet can be attached to the heating element at one end and extended to the heat dissipation body at the other end, thereby improving the heat transfer efficiency.

[0088] Optionally, in some embodiments, the connecting housing 3 is made of PC (polycarbonate) or ABS (acrylonitrile-butadiene-styrene copolymer), the cover 4 is made of PC (polycarbonate) or ABS (acrylonitrile-butadiene-styrene copolymer), and the heat dissipation module 5 is made of copper- or aluminum-containing material. The all-plastic materials used for the connecting housing and cover meet the requirements for safe use.

[0089] like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10The protective cover structure shown includes an upper housing 8 and a lower housing 9 that enclose the mounting cavity 21. The upper housing 8 has a first engaging groove 81 near its central axis, a second engaging groove 82 away from its central axis, an upper housing connecting post 83 located in the second engaging groove 82, a plurality of upper housing reinforcing ribs 84 extending upwards, and upper housing grooves 85 located between adjacent upper housing reinforcing ribs 84. The lower housing 9 has a first engaging portion 91 into which the first engaging groove 81 extends, a second engaging portion 92 into which the second engaging groove 82 extends, and a connecting post 83 connected to the mounting cavity 21. The upper housing connecting post 83 is fitted with a lower housing connecting hole 93, a plurality of peripheral reinforcing ribs 94 located on the periphery of the lower housing 9, and a lower housing groove 95 located between adjacent peripheral reinforcing ribs 94. The housing first opening 31 and the connecting opening 33 are located on the lower housing 9. The upper housing reinforcing ribs 84 are arranged in a straight line, L-shape, bow shape, arc shape or wave shape. The peripheral reinforcing ribs 94 are arranged in a straight line, L-shape, arc shape or wave shape. The outer side of the peripheral reinforcing ribs 94 narrows from the mounting cavity 21 towards the heat dissipation cavity 22. A sealing element 10 is provided between the upper housing 8 and the lower housing 9.

[0090] Furthermore, as a preferred embodiment of the present invention and not a limitation thereof, by dividing the connecting housing into an upper housing and a lower housing, and utilizing the double nesting structure of the first snap-fit ​​groove, the second snap-fit ​​groove and the corresponding first snap-fit ​​part and the second snap-fit ​​part, in conjunction with the locking of the upper housing connecting post and the lower housing connecting hole, the upper housing and the lower housing are precisely guided and multi-dimensionally stablely positioned during the assembly process, thereby improving the overall connection strength and anti-misassembly capability of the housing splicing interface.

[0091] The addition of reinforcing ribs to the upper shell and the periphery of the lower shell, and the use of various geometric shapes such as straight lines, L-shapes, arcs, or waves, can specifically improve the compressive stiffness and torsional resistance of each stress area of ​​the shell without significantly increasing the thickness of the shell foundation, thus preventing the protective cover from warping and deforming under external impact or long-term thermal cycling conditions.

[0092] In addition, the design of the reinforcing ribs on the lower shell side narrowing from the mounting cavity to the heat dissipation cavity not only conforms to the draft angle requirements in injection molding or die casting processes, reducing demolding difficulty and improving the production yield of structural parts, but also optimizes the stress transmission path on the shell surface, avoiding stress concentration problems caused by right-angle steps. At the same time, its narrowing shape is more conducive to the smooth flow of external convective air along the shell surface, reducing airflow obstruction.

[0093] Optionally, in some embodiments, the arrangement of the upper and lower shell grooves eliminates redundant material, reduces the overall weight of the shell, and makes the shell wall thickness more uniform, which is beneficial for injection molding or die casting and prevents local shrinkage and deformation. On the other hand, the groove structure increases the specific surface area of ​​the shell surface, which can generate a certain airflow disturbance when air flows across the shell surface, thereby helping to improve the heat exchange efficiency between the shell and the external environment to a certain extent.

[0094] Optionally, in some embodiments, the seal is arranged in a ring shape within the first or second snap-fit ​​groove, and the seal has a sealing opening through which the upper housing connecting post passes.

[0095] Optionally, in some embodiments, the seal is fitted over the connection between the upper and lower housings to reduce the entry of moisture into the mounting cavity from the gaps between the upper and lower housings.

[0096] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the electrical appliance of the present invention includes the protective cover structure described above.

[0097] Alternatively, in some embodiments, the appliance is not limited to power adapters, inverters, electrical control cabinets, outdoor lighting fixtures, monitoring equipment, and household appliances such as food processors, humidifiers, and water purifiers.

[0098] Specifically, by employing the aforementioned protective cover structure, the electrical components, including power modules and control circuits, are housed within a sealed mounting cavity. The heat dissipation unit is positioned between the mounting cavity and the heat dissipation cavity, with the heat sink extending into the heat dissipation cavity, which is connected to the outside environment. Heat generated during operation is conducted to the heat sink via the heat dissipation unit and then carried away by the air flowing through the heat dissipation cavity, forming an independent heat dissipation path. This overcomes the problem of internal heat accumulation common in traditional electrical appliances, prevents derating or thermal failure of power devices due to excessive temperature rise, ensures the structural reliability and operational stability of the electrical equipment under harsh operating conditions, and ultimately extends the overall service life of the device.

[0099] Since the mounting cavity and the heat dissipation cavity are separated by the heat dissipation body, external dust and moisture cannot enter the mounting cavity. Therefore, the electrical appliance can achieve continuous heat dissipation while maintaining a high level of protection, avoiding protection failure due to openings. This structure helps to extend the service life of the electrical appliance in humid, dusty or outdoor environments, reduce the failure rate, and meet the heat dissipation requirements of medium power levels without relying on complex active heat dissipation devices. This helps to simplify the overall structure of the electrical appliance and reduce manufacturing costs.

[0100] Example 1 like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The protective cover structure shown includes a housing 1, a cavity 2, a connecting housing 3 and a cover 4 that enclose the cavity 2, a heat dissipation module 5 located in the cavity 2, and a first opening 31 on one side of the cavity 2 into which a circuit assembly 6 extends. The cavity 2 includes a mounting cavity 21 for accommodating the circuit assembly 6 and communicating with the first opening 31, and a heat dissipation cavity 22 communicating with both the mounting cavity 21 and the outside of the housing 1. The heat dissipation module 5 is located between the mounting cavity 21 and the heat dissipation cavity 22, and includes a heat dissipation body 51 and heat dissipation fins 52 connected to the heat dissipation body 51. The heat sink 52 extends at least partially to the outside of the mounting cavity 21 and into the heat dissipation cavity 22. The mounting cavity 21 is located on one side of the heat dissipation body 51, and the heat dissipation cavity 22 is located on the other side of the heat dissipation body 51. The heat dissipation body 51 separates the mounting cavity 21 and the heat dissipation cavity 22. The connecting housing 3 and / or the cover 4 are provided with heat dissipation holes 7 communicating with the heat dissipation cavity 22. A thermally conductive filling area 100 and a heat dissipation part 211 located in the thermally conductive filling area 100 are provided between the heat dissipation module 5 and the circuit assembly 6. The heat dissipation part 211 is used to fit and adhere to the back of the circuit assembly 6 and conduct heat to the heat dissipation body 51.

[0101] This invention physically isolates the cavity into a sealed mounting cavity 21 and a heat dissipation cavity 22 that communicates with the outside through a heat dissipation body 51. While protecting the circuit assembly 6 from external dust and moisture intrusion, the heat sink 52 extending into the heat dissipation cavity 22 conducts and dissipates internal heat to the outside, effectively balancing high protection level and efficient heat dissipation. By providing a heat dissipation part 211 within the thermally conductive filling area 100 and fitting it to the back of the circuit assembly 6, gaps caused by differences in the thickness of the surface mount components are effectively filled, thereby reducing contact thermal resistance and improving the efficiency of heat conduction to the heat dissipation body 51. This reduces the operating temperature of the circuit assembly 6 and improves its operational stability and service life.

[0102] Example 2 Example 2, based on Example 1, has the following implementation method: like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7The protective cover structure shown has a connecting housing 3 with a connecting opening 33 located between the mounting cavity 21 and the heat dissipation cavity 22, a connecting housing abutting part 34 for abutting against the heat dissipation body 51, and a connecting housing positioning part 35 for limiting the heat dissipation body 51. The heat dissipation body 51 has a heat dissipation body connecting part 511 that cooperates with the connecting housing positioning part 35. The frontal projection area of ​​the heat dissipation body 51 is larger than the frontal projection area of ​​the connecting opening 33.

[0103] The connecting housing positioning part 35 and the heat dissipation body connecting part 511 can be connected and fitted by one or more of the following methods: threaded connection, snap-fit ​​connection, magnetic connection, mortise and tenon connection, adhesive bonding, welding connection, riveting connection, fastener connection, column groove connection, and interference fit.

[0104] Example 3 Example 3, based on Example 2, has the following implementation method: like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown has a second opening 32 on the other side of the connecting housing 3, into which the heat dissipation body 51 extends. The connecting housing abutment 34 is located on the side of the connecting opening 33 near the heat dissipation cavity 22, and the connecting housing positioning part 35 is located on the side of the connecting opening 33 near the mounting cavity 21. The heat dissipation body 51 passes through the second opening 32 from the heat dissipation cavity 22 toward the connecting opening 33 and abuts against the connecting housing abutment 34. The connecting housing positioning part 35 includes a first connecting hole 351 for a first fastener to pass through, and the heat dissipation body connecting part 511 includes a first connecting hole 5111 for a first fastener to pass through. The first fastener is a screw.

[0105] Example 4 Example 4, based on Example 2, has the following implementation method: like Figure 3 , Figure 4 , Figure 5 and Figure 7The protective cover structure shown includes multiple heat sinks 52 spaced apart, with heat sink through slots 521 formed between adjacent heat sinks 52. The long side of each heat sink 52 extends horizontally along the short side of the heat dissipation body 51, and the extension length of the long side of each heat sink 52 is greater than the short side length of the connecting opening 33. The distance between the heat sink 52 on one side of the end of the heat dissipation body 51 and the heat sink 52 on the other side of the end of the heat dissipation body 51 is greater than the long side length of the connecting opening 33. The short side of each heat sink 52 extends vertically along the axial direction of the heat dissipation body 51. Each heat sink 52 protrudes to the lower side of the connecting housing 3 and is located within the heat dissipation cavity 22.

[0106] Example 5 Example 5, based on Example 1, has the following implementation method: like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown has a connecting housing 3 with a first extending edge 36 near the central axis of the connecting housing 3, a second extending edge 37 away from the central axis of the connecting housing 3, an extending connecting groove 38 formed by the first extending edge 36 and the second extending edge 37, and a connecting housing limiting part 39. The cover body 4 has a cover body engaging part 41 that extends into the extending connecting groove 38 and a cover body connecting part 42 that cooperates with the connecting housing limiting part 39.

[0107] The connecting housing limiting part 39 and the cover connecting part 42 can be connected and fitted by one or more of the following methods: threaded connection, snap-fit ​​connection, magnetic connection, mortise and tenon connection, adhesive bonding, welding connection, riveting connection, fastener connection, column groove connection, and interference fit.

[0108] Example 6 Example 6, based on Example 5, has the following implementation method: like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown includes a connecting housing limiting part 39 with a first extension side connecting hole 361 located on the first extension side 36, a cover connecting part 42 with a cover engaging part connecting hole 421 located on the cover engaging part 41, a second extension side 37 with a second extension side connecting hole 371 for avoiding or allowing the second fastener 12 to pass through, and a protrusion 362 on the inner side of the first extension side 36 communicating with the first extension side connecting hole 361 and protruding toward the central axis of the connecting housing 3. The second fastener 12 is a screw.

[0109] Example 7 Example 7, based on Example 4, has the following implementation method: like Figure 1 , Figure 3 , Figure 4 and Figure 5 , Figure 7 The protective cover structure shown includes heat dissipation holes 7, which include side heat dissipation holes 71 on the side of the cover body 4 and bottom heat dissipation holes 72 on the bottom of the cover body 4. Both the side heat dissipation holes 71 and the bottom heat dissipation holes 72 are provided in multiples. The multiple bottom heat dissipation holes 72 are arranged opposite to the heat dissipation fin through groove 521. The horizontal cross-sectional area of ​​the mounting cavity 21 is larger than the horizontal cross-sectional area of ​​the heat dissipation cavity 22.

[0110] Example 8 Example 8, based on Example 1, has the following implementation method: like Figure 3 , Figure 4 , Figure 5 and Figure 7 The protective cover structure shown includes a heat dissipation body 51 with a heat dissipation body positioning hole 512, and a heat dissipation part 211 with a heat dissipation part connecting hole 2111 that mates with the heat dissipation body positioning hole 512. The heat dissipation part 211 includes an aluminum metal sheet. The connecting shell 3 is made of PC (polycarbonate), the cover 4 is made of PC (polycarbonate), and the heat dissipation module is made of aluminum alloy.

[0111] Example 9 The difference between Example 9 and Example 8 is that Example 9 has the following implementation method: The heat dissipation part 211 includes heat dissipation adhesive. The connecting shell is made of ABS material (acrylonitrile-butadiene-styrene copolymer), the cover 4 is made of ABS material (acrylonitrile-butadiene-styrene copolymer), and the heat dissipation module is made of copper alloy.

[0112] Example 10 The difference between Example 10 and Example 8 lies in the following implementation: the heat dissipation part 211 includes thermally conductive silicone grease and thermally conductive ceramic sheets. The connecting shell is made of flame-retardant ABS material (acrylonitrile-butadiene-styrene copolymer), the cover 4 is made of flame-retardant PC material (polycarbonate), and the heat dissipation module is made of copper alloy.

[0113] Example 11 Example 11, based on Example 3, has the following implementation method: like Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10The protective cover structure shown includes an upper housing 8 and a lower housing 9 that enclose the mounting cavity 21. The upper housing 8 has a first engaging groove 81 near the central axis of the upper housing 8, a second engaging groove 82 away from the central axis of the upper housing 8, an upper housing connecting post 83 located in the second engaging groove 82, a plurality of upper housing reinforcing ribs 84 extending upward, and upper housing grooves 85 located between adjacent upper housing reinforcing ribs 84. The lower housing 9 has a first engaging portion 91 into which the first engaging groove 81 extends, and a second engaging portion into which the second engaging groove 82 extends. The lower housing 9 has a connecting hole 93 that mates with the upper housing connecting post 83, a plurality of peripheral reinforcing ribs 94 located on the periphery of the lower housing 9, and a lower housing groove 95 located between adjacent peripheral reinforcing ribs 94. The housing first opening 31, the connecting housing second opening 32, and the connecting opening 33 are located on the lower housing 9. The upper housing reinforcing ribs 84 are wavy, and the peripheral reinforcing ribs 94 are L-shaped. The outer edge of the peripheral reinforcing ribs 94 narrows from the mounting cavity 21 toward the heat dissipation cavity 22. A sealing element 10 is provided between the upper housing 8 and the lower housing 9.

[0114] Example 12 The difference between Example 12 and Example 11 is that Example 12 has the following implementation method: the upper shell reinforcing rib 84 is arranged in a straight line, and the peripheral reinforcing rib 94 is arranged in an arc shape.

[0115] Example 13 Example 13, based on Example 1, has the following implementation method: The heat dissipation module 5 is provided with a heat dissipation main body receiving cavity 513. The heat dissipation main body receiving cavity 513 is located on the side of the heat dissipation main body facing the cover 4 or the heat dissipation hole 7. The heat dissipation main body receiving cavity 513 is provided with an airflow acceleration component 5131, which is a fan. The heat dissipation main body receiving cavity 513 is located in the closed area formed by the heat dissipation main body 51 and the heat sink 52 after they are connected to each other.

[0116] Example 14 Example 14, based on the above examples, has the following implementation method: like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the electrical appliance of the present invention includes the protective cover structure described above.

[0117] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A protective cover structure, comprising a housing (1), wherein the housing (1) is provided with a cavity (2), characterized in that: The housing (1) is provided with a connecting housing (3) and a cover (4) that enclose the cavity (2), a heat dissipation module (5) located in the cavity (2), and a first opening (31) of the housing located on one side for the circuit assembly (6) to extend into the cavity (2). The cavity (2) includes a mounting cavity (21) for accommodating the circuit assembly (6) and communicating with the first opening (31) of the housing and a heat dissipation cavity (22). The heat dissipation module (5) is located between the mounting cavity (21) and the heat dissipation cavity (22). The heat dissipation module (5) includes a heat dissipation body (51) and a heat dissipation fin (52) connected to the heat dissipation body (51). The heat dissipation fin (52) extends at least partially into the mounting cavity (21). The heat dissipation cavity (22) extends into the heat dissipation cavity (22) on the outside of the heat dissipation body (51). The mounting cavity (21) is located on one side of the heat dissipation body (51), and the heat dissipation cavity (22) is located on the other side of the heat dissipation body (51). The heat dissipation body (51) separates the mounting cavity (21) and the heat dissipation cavity (22). The connecting housing (3) and / or the cover (4) are provided with heat dissipation holes (7) communicating with the heat dissipation cavity (22). A thermally conductive filling area (100) and a heat dissipation part (211) located in the thermally conductive filling area (100) are provided between the heat dissipation module (5) and the circuit assembly (6). The heat dissipation part (211) is used to fit and conform to the back of the circuit assembly (6) and conduct heat to the heat dissipation body (51).

2. The protective cover structure according to claim 1, characterized in that: The connecting housing (3) is provided with a connecting opening (33) located between the mounting cavity (21) and the heat dissipation cavity (22), a connecting housing abutting part (34) for abutting against the heat dissipation body (51), and a connecting housing positioning part (35) for limiting the heat dissipation body (51). The heat dissipation body (51) is provided with a heat dissipation body connecting part (511) that cooperates with the connecting housing positioning part (35). The positive projection area of ​​the heat dissipation body (51) is larger than the positive projection area of ​​the connecting opening (33).

3. The protective cover structure according to claim 2, characterized in that: The connecting housing (3) has a second opening (32) on the other side for the heat dissipation body (51) to extend into. The connecting housing abutment (34) is located on the side of the connecting opening (33) near the heat dissipation cavity (22). The connecting housing positioning part (35) is located on the side of the connecting opening (33) near the mounting cavity (21). The heat dissipation body (51) passes through the second opening (32) of the connecting housing from the heat dissipation cavity (22) toward the connecting opening (33) and abuts against the connecting housing abutment (34). The connecting housing positioning part (35) includes a first connecting hole (351) of the connecting housing for the first fastener to pass through. The heat dissipation body connecting part (511) includes a first connecting hole (5111) of the heat dissipation body for the first fastener to pass through.

4. The protective cover structure according to claim 2, characterized in that: The heat sink (52) is provided in multiple and spaced apart. A heat sink through groove (521) is formed between adjacent heat sinks (52). The long side of the heat sink (52) extends horizontally along the short side of the heat dissipation body (51). The length of the long side of the heat sink (52) is greater than the length of the short side of the connecting opening (33). The distance between the heat sink (52) on one side of the end of the heat dissipation body (51) and the heat sink (52) on the other side of the end of the heat dissipation body (51) is greater than the length of the long side of the connecting opening (33). The short side of the heat sink (52) extends vertically along the axial direction of the heat dissipation body (51). The heat sink (52) protrudes to the lower side of the connecting housing (3) and is located in the heat dissipation cavity (22).

5. The protective cover structure according to claim 1, characterized in that: The connecting housing (3) is provided with a first extending edge (36) close to the central axis of the connecting housing (3), a second extending edge (37) away from the central axis of the connecting housing (3), an extending connecting groove (38) formed by the first extending edge (36) and the second extending edge (37), and a connecting housing limiting part (39). The cover (4) is provided with a cover engaging part (41) extending into the extending connecting groove (38) and a cover connecting part (42) cooperating with the connecting housing limiting part (39).

6. The protective cover structure according to claim 5, characterized in that: The connecting housing limiting part (39) includes a first extension side connecting hole (361) located on the first extension side (36), the cover connecting part (42) includes a cover engaging part connecting hole (421) located on the cover engaging part (41), the second extension side (37) is provided with a second extension side connecting hole (371) to avoid the second fastener (12) or to allow the second fastener (12) to pass through, and the inner side of the first extension side (36) is provided with a protrusion (362) that communicates with the first extension side connecting hole (361) and protrudes toward the central axis of the connecting housing (3).

7. A protective cover structure according to claim 4, characterized in that: The heat dissipation holes (7) include side heat dissipation holes (71) on the side of the cover (4) and bottom heat dissipation holes (72) on the bottom of the cover (4). Both the side heat dissipation holes (71) and the bottom heat dissipation holes (72) are provided in multiples. The multiple bottom heat dissipation holes (72) are provided opposite to the heat sink through slot (521). The horizontal cross-sectional area of ​​the mounting cavity (21) is larger than the horizontal cross-sectional area of ​​the heat dissipation cavity (22). The heat dissipation module (5) is provided with a heat dissipation body receiving cavity (513). The heat dissipation body receiving cavity (513) is located on the side of the heat dissipation body facing the cover (4) or the heat dissipation holes (7). The heat dissipation body receiving cavity (513) is provided with an airflow acceleration component (5131). The heat dissipation body receiving cavity (513) is at least partially located in the closed or semi-closed area formed by the heat dissipation body (51) and the heat sink (52) after they are connected to each other.

8. The protective cover structure according to claim 1, characterized in that: The heat dissipation body (51) is provided with a heat dissipation body positioning hole (512), and the heat dissipation part (211) is provided with a heat dissipation part connection hole (2111) that cooperates with the heat dissipation body positioning hole (512). The heat dissipation part (211) includes one or more of the following: metal sheet, heat dissipation adhesive, thermal pad, thermal gel, graphite heat dissipation sheet, thermal grease, thermal ceramic sheet, phase change heat pipe, and heat spreader. The connecting shell (3) is made of plastic material, the cover (4) is made of plastic material, and the heat dissipation module (5) is made of metal material.

9. A protective cover structure according to claim 2, characterized in that: The connecting housing (3) includes an upper housing (8) and a lower housing (9) that enclose the mounting cavity (21). The upper housing (8) is provided with a first snap-fit ​​groove (81) near the central axis of the upper housing (8), a second snap-fit ​​groove (82) away from the central axis of the upper housing (8), an upper housing connecting post (83) located in the second snap-fit ​​groove (82), a plurality of upper housing reinforcing ribs (84) extending upward, and an upper housing groove (85) located between adjacent upper housing reinforcing ribs (84). The lower housing (9) is provided with a first engaging portion (91) into which the first snap-fit ​​groove (81) extends, a second engaging portion (92) into which the second snap-fit ​​groove (82) extends, and a connecting portion (95) with the upper housing. The lower housing has a connecting hole (93) that mates with the connecting column (83), multiple peripheral reinforcing ribs (94) located on the periphery of the lower housing (9), and a lower housing groove (95) located between adjacent peripheral reinforcing ribs (94). The first opening (31) and the connecting opening (33) of the housing are located on the lower housing (9). The upper housing reinforcing ribs (84) are arranged in a straight line, L-shape, bow shape, arc shape or wave shape. The peripheral reinforcing ribs (94) are arranged in a straight line, L-shape, arc shape or wave shape. The outer side of the peripheral reinforcing ribs (94) narrows from the mounting cavity (21) towards the heat dissipation cavity (22). A sealing element (10) is provided between the upper housing (8) and the lower housing (9).

10. An electrical appliance, characterized in that: Includes the protective shield structure as described in any one of claims 1-9.

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