Capacitor shell structure

Abstract

The capacitor shell structure comprises a back plate, a main cover, an upper secondary cover, a lower secondary cover and a surface cover, the main cover is provided with a front opening, a rear opening, an upper opening and a lower opening, the back plate is installed on the rear portion of the main cover and used for covering the rear opening, the upper secondary cover is installed on the upper portion of the main cover and used for covering the upper opening, the lower secondary cover is installed on the lower portion of the main cover and used for covering the lower opening, and the face cover is installed on the front portion of the main cover and used for covering the front opening. The back plate, the main cover, the upper secondary cover, the lower secondary cover and the surface cover form a containing cavity for containing the PCBA board, the upper secondary cover and the lower secondary cover are provided with openings, and the openings are used for being matched with components of the PCBA board. By decomposing the capacitor shell into a plurality of independent parts, the modular design of the shell is realized. When the components in the PCBA board are changed, the whole shell does not need to be manufactured by opening a die again, and the upper secondary cover, the lower secondary cover or the surface cover can be assembled with the main cover and matched with the PCBA board for use only by cutting corresponding notches, plugging ports or button ports at the positions corresponding to the added components of the upper secondary cover, the lower secondary cover or the surface cover.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to a capacitor shell structure. Background Art

[0002] In the prior art, capacitor housings are molded, which require injection molding or pressing to manufacture. These processes are complex and require high equipment precision and process control.

[0003] In the power industry, the openings or gaps in the capacitor housing correspond one-to-one with the components in the PCBA board. When the components in the PCBA board are changed, the capacitor housing must be re-molded and manufactured, which is costly and has low compatibility. Utility Model Content

[0004] In view of the problems raised in the background technology, the purpose of the present invention is to provide a capacitor housing structure to solve the problem of low compatibility of existing capacitor housings.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A capacitor housing structure includes a back plate, a main cover, an upper cover, a lower cover and a surface cover;

[0007] The main cover is provided with a front opening, a rear opening, an upper opening and a lower opening. The back plate is mounted on the rear portion of the main cover and is used to cover the rear opening. The upper cover is mounted on the upper portion of the main cover and is used to cover the upper opening. The lower cover is mounted on the lower portion of the main cover and is used to cover the lower opening. The face cover is mounted on the front portion of the main cover and is used to cover the front opening.

[0008] The back panel, the main cover, the upper cover, the lower cover and the surface cover constitute a shell having an internal accommodating cavity, the accommodating cavity is used to accommodate the PCBA board, the upper cover and the lower cover are provided with openings, and the openings are used to cooperate with the components of the PCBA board.

[0009] Preferably, the main cover includes a front frame and a rear frame, the front frame and the rear frame are parallel to each other, the front frame is located in the middle of the front of the rear frame, the front frame and the rear frame are connected by two side panels, the front opening is provided in the front frame, the rear opening is provided in the rear frame, and the opening area of the front opening is smaller than the opening area of the rear opening;

[0010] The front frame is composed of two frame end plates and two frame side plates, the two frame end plates are parallel to each other, the two frame side plates are parallel to each other, the two ends of one frame side plate are respectively connected to the ends of the same side of the two frame end plates, and the side plates are formed by extending the frame side plates;

[0011] A plurality of groups of mounting male parts are provided on the outer side of the frame end plate, and the mounting male parts are used for mounting and connecting the upper cover or the lower cover respectively.

[0012] Preferably, the upper cover and the lower cover are sub-covers with the same structure, and the sub-cover comprises two cover side plates, a cover end plate, a cover panel and a cover mounting plate;

[0013] The two cover side plates are parallel to each other, the two sides of the cover end plate are respectively connected to the two cover side plates, the cover end plate is arranged on the top of the cover side plates, and the opening is arranged on the cover end plate;

[0014] Both sides of the cover panel are connected to the two cover side panels respectively, the cover panel is arranged at the front of the cover side panels, and the top of the cover panel is connected to the front end of the cover end panel;

[0015] The two sides of the cover mounting plate are respectively connected to the two cover side plates, the cover mounting plate is arranged at the bottom of the cover side plates, the front end of the cover mounting plate is connected to the bottom of the cover panel, and the cover mounting plate is provided with several groups of mounting female parts, and the mounting female parts are matched and connected with the mounting male parts.

[0016] Preferably, the male mounting portion is a T-shaped protrusion, the T-shaped protrusion comprising a vertical portion and a horizontal portion, the bottom of the vertical portion is connected to the frame end plate, the top of the vertical portion is connected to the horizontal portion, and the horizontal cross-sectional area of the horizontal portion is larger than the horizontal cross-sectional area of the vertical portion;

[0017] The cover mounting plate includes an upper mounting plate and a lower mounting plate, the upper mounting plate and the lower mounting plate are parallel to each other and distributed up and down, there is a mounting groove between the upper mounting plate and the lower mounting plate, the mounting groove cooperates with the horizontal portion, and the lower mounting plate is provided with a plurality of mounting notches at intervals at one end away from the cover panel, the mounting notches and the vertical portion, and the mounting notches and the mounting groove constitute a mounting mother portion.

[0018] Preferably, a plurality of first clamping blocks are provided on the outer side of the frame end plate, and a plurality of first bayonet holes are provided on the lower mounting plate, and the first clamping blocks are cooperatively connected with the first bayonet holes.

[0019] Preferably, a second bayonet is provided on the outer side of the upper and lower parts of the side panel, and a second clamping block is provided on the inner side of the cover side panel, and the second clamping block is connected with the second bayonet in a cooperative manner.

[0020] Preferably, a plurality of third clamping blocks are provided on the inner side of the front frame, and a plurality of third bayonet holes are provided on the rear side of the face cover, and the third clamping blocks are cooperatively connected with the third bayonet holes.

[0021] Preferably, the front end surface of the back plate is provided with a plurality of positioning and fixing columns, and the PCBA board is mounted and connected to the positioning and fixing columns via fasteners;

[0022] The back panel is also provided with a plurality of mounting screw holes, which pass through the back panel. The peripheral side of the rear frame is provided with a plurality of connecting parts, which protrude toward the center of the rear opening. The connecting parts are provided with threaded holes. The positions of the plurality of mounting screw holes correspond one to one with the positions of the plurality of connecting parts. The back panel and the main cover are installed and connected by the fasteners passing through the mounting screw holes and the threaded holes of the connecting parts in sequence.

[0023] Preferably, a mounting bracket is detachably provided on the back side of the back panel, and a fixing hole is provided at the lower portion of the mounting bracket. When the mounting bracket is installed on the back panel, the fixing hole protrudes from the bottom of the back panel, and the fixing hole is used for mounting and connecting with the mounting surface.

[0024] Preferably, a mounting rail is provided on the back of the back plate, and an arc clamping block is provided in the middle of the mounting rail, and the arc portion of the arc clamping block is bent and protruded downward;

[0025] Slide blocks are provided on both sides of the mounting frame, and two elastic clamping parts are provided in the middle of the mounting frame. The elastic clamping parts include a fixed end and an elastic free end. The fixed end is connected to the mounting frame, and the elastic free end extends obliquely upward. The two elastic free ends are arranged opposite to each other, and the elastic free ends can be elastically deformed toward the mounting frame.

[0026] The sliding block is connected with the mounting rail, and the two elastic clamping parts are clamped with the arc clamping block.

[0027] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0028] By breaking the capacitor housing into multiple independent components, a modular design is achieved. The housing cavity meets the requirements for accommodating the PCBA. If the components on the PCBA are changed, there's no need to re-mold the entire housing. Simply cut the corresponding notches, connectors, or button ports in the upper, lower, or top covers where the components will be added. The housing can then be assembled with the main cover and used with the PCBA. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0030] Figure 2 yes Figure 1 Exploded view of;

[0031] Figure 3It is a structural diagram of the main cover of the utility model;

[0032] Figure 4 This is a structural diagram of the main cover of the utility model from another perspective;

[0033] Figure 5 This is a structural diagram of the secondary cover (upper cover / lower cover) of the present invention;

[0034] Figure 6 This is a structural schematic diagram of the secondary cover (upper cover / lower cover) of the present invention from another perspective;

[0035] Figure 7 It is a structural schematic diagram of the back plate of the utility model;

[0036] Figure 8 It is a rear view of the back plate of the utility model;

[0037] Figure 9 yes Figure 8 Exploded view of;

[0038] Figure 10 It is a schematic diagram of another embodiment of the present invention.

[0039] Wherein: accommodating cavity 00, back plate 1, positioning and fixing column 11, mounting screw hole 12, mounting slide rail 13, arc block 14, main cover 2, front frame 21, frame end plate 211, mounting male part 213, vertical part 2131, horizontal part 2132, first block 214, rear frame 22, limiting part 221, side plate 23, second bayonet 231, third block 24, front opening 201, rear opening 202, upper opening 203, lower opening 204, Upper cover 31, lower cover 32, opening 300, cover side plate 301, second clamping block 3011, cover end plate 302, cover panel 303, cover mounting plate 304, upper mounting plate 3041, lower mounting plate 3042, mounting groove 3043, mounting notch 3044, first clamping hole 3045, face cover 4, third clamping hole 41, mounting frame 5, slider 51, elastic clamping portion 52, elastic free end 521, fixing hole 53 and PCBA board 6. DETAILED DESCRIPTION

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0042] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," and "third" may explicitly or implicitly include one or more of the features.

[0043] It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0044] The following is combined with Figures 1 to 10 The technical solution of the utility model is further illustrated through specific implementation methods.

[0045] A capacitor housing structure includes a back plate 1, a main cover 2, an upper cover 31, a lower cover 32 and a surface cover 4;

[0046] The main cover 2 is provided with a front opening 201, a rear opening 202, an upper opening 203 and a lower opening 204. The back plate 1 is mounted on the rear portion of the main cover 2 and is used to cover the rear opening 202. The upper cover 31 is mounted on the upper portion of the main cover 2 and is used to cover the upper opening 203. The lower cover 32 is mounted on the lower portion of the main cover 2 and is used to cover the lower opening 204. The surface cover 4 is mounted on the front portion of the main cover 2 and is used to cover the front opening 201.

[0047] The back panel 1, the main cover 2, the upper cover 31, the lower cover 32 and the surface cover 4 form a shell with an accommodating cavity 00 inside. The accommodating cavity 00 is used to accommodate the PCBA board 6. The upper cover 31 and the lower cover 32 are provided with openings 300, and the openings 300 are used to accommodate the components of the PCBA board 6.

[0048] By breaking the capacitor housing into multiple independent components, including the backplate 1, main cover 2, upper cover 31, lower cover 32, and top cover 4, a modular design is achieved. The housing's cavity 00 accommodates the PCBA board 6. When components within the PCBA board 6 change, there's no need to re-mold the entire housing. The upper and lower covers 31 and 32 serve as aperture processing areas. Simply cut corresponding notches, plug-in ports, or button openings in the upper and lower covers 31, 32, or top cover 4 where additional components will be added, and the housing can be assembled with the main cover 2 and used in conjunction with the PCBA board 6. This housing structure allows for rapid adjustment of the upper, lower, and top covers to accommodate PCBA boards 6 of varying specifications and requirements, meeting diverse market demands and enhancing the product's market adaptability. This significantly reduces production costs and manufacturing cycles, improving the compatibility and flexibility of capacitor housing products.

[0049] The modular structure makes it easier to maintain and upgrade the capacitor housing. When the internal PCBA board 6 needs to be repaired or replaced, the module corresponding to the exposed position can be easily removed and installed without destroying the entire housing structure, improving maintenance efficiency and user experience.

[0050] Furthermore, the main cover 2 includes a front frame 21 and a rear frame 22. The front frame 21 and the rear frame 22 are parallel to each other. The front frame 21 is located in the middle of the front of the rear frame 22. The front frame 21 and the rear frame 22 are connected by two side panels 23. The front opening 201 is provided in the front frame 21, and the rear opening 202 is provided in the rear frame 22. The opening area of the front opening 201 is smaller than the opening area of the rear opening 202.

[0051] The front frame 21 is composed of two frame end plates 211 and two frame side plates. The two frame end plates 211 are parallel to each other, and the two frame side plates are parallel to each other. The two ends of one frame side plate are respectively connected to the ends of the same side of the two frame end plates 211. The side plates 23 are formed by extending the frame side plates.

[0052] A plurality of male mounting portions 213 are provided on the outer side of the frame end plate 211 , and the male mounting portions 213 are used for mounting and connecting the upper cover 31 or the lower cover 32 .

[0053] By subdividing the main cover 2 into a front frame 21 and a rear frame 22, connected by two side panels 23, this design not only maintains the integrity of the housing but also enhances structural stability and strength. This dual-frame design is particularly effective in resisting external forces and vibrations when the capacitor is equipped with a heavy PCBA 6 or other components, ensuring long-term stable operation.

[0054] By designing the front frame 21 as a three-dimensional structure consisting of two frame end plates 211 and two frame side plates, and positioning it directly in the center of the rear frame 22, this design not only enhances the structural strength and stability of the front frame 21 itself, but also strengthens the structure of the entire main cover 2. Furthermore, the side plates 23, formed by extending from the frame side plates, further strengthen the lateral support of the main cover 2 and enhance the deformation resistance of the entire capacitor housing.

[0055] Since the front frame 21 and the rear frame 22 are connected by the side panels 23 and the front frame 21 is located in the middle of the rear frame 22, this layout makes more reasonable use of the internal space of the capacitor housing. The design of the front frame 21 also takes into account compatibility with the PCBA board 6 and other internal components, ensuring that they can be installed smoothly and work properly.

[0056] Several sets of male mounting portions 213 are provided on the outside of the frame end plate 211. This design facilitates the convenient and reliable connection between the main cover 2 and the upper and lower covers 31, 32. The male mounting portions 213 are designed to mate with the female mounting portions on the upper and lower covers 31, 32, allowing for secure connection through a simple plug-in connection, improving assembly efficiency and sealing.

[0057] Specifically, the present invention is that the back plate 1 of the capacitor housing is first installed and connected with the main cover 2, and then the PCBA board 6 is placed in the accommodating cavity 00 through the upper opening 203 or the lower opening 204 of the main cover 2, and the PCBA board is installed and fixed to the back plate 1 by fasteners to realize the installation connection between the PCBA board 6 and the main cover 2 and the back plate 1; after the PCBA board 6 is installed, the upper cover 31, the lower cover 32 and the surface cover 4 respectively cover the upper opening 203, the lower opening 204 and the front opening 201 of the main cover 2 to realize the installation of the capacitor housing and the PCBA board 6.

[0058] Furthermore, the upper cover 31 and the lower cover 32 are sub-covers with the same structure, and the sub-covers include two cover side plates 301, a cover end plate 302, a cover panel 303 and a cover mounting plate 304;

[0059] The two cover side plates 301 are parallel to each other, and both sides of the cover end plate 302 are connected to the two cover side plates 301 respectively. The cover end plate 302 is provided on the top of the cover side plates 301, and the opening 300 is provided on the cover end plate 302;

[0060] The two sides of the cover panel 303 are respectively connected to the two cover side panels 301. The cover panel 303 is arranged at the front of the cover side panels 301. The top of the cover panel 303 is connected to the front end of the cover end panel 302.

[0061] The two sides of the cover mounting plate 304 are respectively connected to the two cover side plates 301, the cover mounting plate 304 is arranged at the bottom of the cover side plates 301, the front end of the cover mounting plate 304 is connected to the bottom of the cover panel 303, and the cover mounting plate 304 is provided with several groups of mounting female parts, and the mounting female parts are matched and connected with the mounting male parts 213.

[0062] The upper cover 31 and the lower cover 32 are designed as sub-covers with the same structure. This unified modular design simplifies the manufacturing process and reduces production costs. At the same time, the front frame 21 is located in the center of the front of the rear frame 22, so that the upper and lower ends of the front frame 21 are the same height and length distance from the rear frame. Therefore, the two upper covers 31 and the lower cover 32 have the same structure, making them interchangeable, improving the versatility of parts and the inventory efficiency of spare parts. The design of the sub-cover includes multiple components such as the cover side panels 301, the cover end panels 302, the cover panel 303 and the cover mounting plate 304. These components are interconnected to form a sturdy frame structure. This design not only enhances the structural strength of the sub-cover itself, but also makes the connection between the sub-cover and the main cover 2 more stable and reliable.

[0063] By providing a plurality of sets of female mounting parts on the cover mounting plate 304, these female mounting parts cooperate with the male mounting parts 213 on the main cover 2. This design makes the installation and removal of the secondary cover more convenient and quick, and also improves the tightness and reliability of the connection.

[0064] Furthermore, the mounting male portion 213 is a T-shaped protrusion, which includes a vertical portion 2131 and a horizontal portion 2132. The bottom of the vertical portion 2131 is connected to the frame end plate 211, and the top of the vertical portion 2131 is connected to the horizontal portion 2132. The horizontal cross-sectional area of the horizontal portion 2132 is larger than the horizontal cross-sectional area of the vertical portion 2131.

[0065] The cover mounting plate 304 includes an upper mounting plate 3041 and a lower mounting plate 3042, and the upper mounting plate 3041 and the lower mounting plate 3042 are parallel to each other and distributed up and down. There is a mounting groove 3043 between the upper mounting plate 3041 and the lower mounting plate 3042, and the mounting groove 3043 cooperates with the horizontal portion 2132. The lower mounting plate 3042 is provided with a plurality of mounting notches 3044 at intervals at one end away from the cover panel 303, and the mounting notch 3044 and the vertical portion 2131, the mounting notch 3044 and the mounting groove 3043 constitute a mounting mother portion.

[0066] When assembling the secondary cover with the main cover 2, the bottom of the secondary cover's cover mounting plate 304 is brought into contact with the outer side of the frame end plate 211 of the main cover's front frame, with the vertical portion 2131 of the T-shaped protrusion aligned with the mounting notch 3044 of the cover mounting plate 304 and the horizontal portion 2132 of the T-shaped protrusion aligned with the mounting groove 3043 of the cover mounting plate 304. After alignment, the secondary cover is slid relative to the main cover 2 so that the secondary cover completely covers the upper opening 203 or the lower opening 204, completing the installation of the secondary cover with the main cover 2. Because the horizontal cross-sectional area of the horizontal portion 2132 is larger than the horizontal cross-sectional area of the vertical portion 2131, the secondary cover is unlikely to separate vertically from the main cover 2 after sliding relative to the main cover 2 for assembly, thus ensuring the sealing and safety of the capacitor housing.

[0067] In another embodiment, the male mounting portion 213 and the female mounting portion may be connected in a dovetail shape that engages with each other, such as a dovetail groove structure with a stable connection and high precision.

[0068] Furthermore, a plurality of first clamping blocks 214 are provided on the outer side of the frame end plate 211 , and a plurality of first bayonet holes 3045 are provided on the lower mounting plate 3042 , and the first clamping blocks 214 are cooperatively connected with the first bayonet holes 3045 .

[0069] Several first latches 214 are added to the outer side of the frame end plate 211, which engage with first latches 3045 on the lower mounting plate 3042 of the secondary cover. This design adds an additional snap-fit connection to the existing T-shaped protrusion (male mounting portion), mounting groove 3043, and mounting notch 3044 (female mounting portion). This dual connection method further stabilizes the connection between the secondary cover and the main cover, effectively preventing loosening or falling off due to vibration or external forces, and improving the overall structural strength of the capacitor housing.

[0070] Furthermore, although the connection between the first clamping block 214 and the first latch 3045 is very secure, it is still relatively easy to remove the secondary cover for maintenance or replacement. Using appropriate tools or techniques, the clamping block can be easily removed from the latch, allowing for quick removal of the secondary cover. This design facilitates subsequent maintenance and servicing.

[0071] Furthermore, a second bayonet 231 is provided on the outer side of the upper and lower parts of the side plate 23 , and a second clamping block 3011 is provided on the inner side of the cover side plate 301 . The second clamping block 3011 is matched and connected with the second bayonet 231 .

[0072] Secondary latches 231 are added to the outer sides of the upper and lower portions of the side panels 23. These engage with second latches 3011 on the inner sides of the cover side panels 301. This design significantly enhances the stability of the side connections of the capacitor housing. The tight fit between the latches and the latches effectively prevents lateral movement or shaking of the secondary cover, making the entire capacitor housing structure more stable and reliable.

[0073] During assembly, the side panels 301 of the secondary cover are aligned with the side panels 23 of the primary cover, and the second latch 3011 is easily engaged with the second latch 231 to achieve a quick side connection. This design simplifies assembly steps, reduces operator skill requirements, and improves assembly efficiency.

[0074] When the secondary cover needs to be removed for maintenance or replacement, the second clamping block 3011 can be easily removed from the second clamping hole 231 through appropriate operation, thereby achieving quick removal of the secondary cover. This design facilitates subsequent maintenance and servicing by the user, reducing maintenance costs and time.

[0075] Furthermore, a plurality of third clamping blocks 24 are provided on the inner side of the front frame 21 , and a plurality of third bayonet holes 41 are provided on the rear side of the cover 4 . The third clamping blocks 24 are cooperatively connected with the third bayonet holes 41 .

[0076] A third clamping block 24 is added to the inner side of the front frame 21 and engages with a third bayonet 41 on the rear side of the cover 4. This design significantly enhances the stability of the capacitor housing's forward connection. The tight fit between the clamping block and bayonet effectively prevents the cover 4 from moving or shaking in the front-to-back direction, making the entire capacitor housing structure more compact and stable. The mating connection between the third clamping block 24 and the third bayonet 41 not only strengthens the connection between the cover 4 and the main cover 2, but also, through the support provided by the front, further enhances the overall housing's resistance to compression and deformation.

[0077] During assembly, the front cover 4 is quickly connected by aligning the third latch 41 on the rear side with the third latch block 24 of the front frame 21 and then snapping the third latch 41 into the latch block. Similarly, when the cover needs to be removed for maintenance or replacement, the latch can be easily removed from the latch block, allowing for quick removal. This design simplifies assembly and disassembly procedures and improves work efficiency.

[0078] Since the cover 4 can be easily removed and installed, users can easily complete these operations when cleaning, inspection or component replacement are required inside the capacitor. This design enhances the maintainability of the capacitor and reduces maintenance costs and time.

[0079] Please refer to Figure 1 and Figure 10, are two embodiments of the cover of the utility model. Among them, Figure 1 Wall-mounted cover shown. Figure 10 The illustrated embodiment is a guide rail type cover, but the two types of covers differ only in appearance due to different requirements in actual application of the capacitor, and do not affect the connection method between the two covers and the main cover 2.

[0080] Furthermore, the front end surface of the back plate 1 is provided with a plurality of positioning and fixing columns 11, and the PCBA board 6 is installed and connected to the positioning and fixing columns 11 through the fasteners;

[0081] The back panel 1 is also provided with a plurality of mounting screw holes 12, and the mounting screw holes 12 pass through the back panel 1. The peripheral side of the rear frame 22 is provided with a plurality of connecting parts 221, and the connecting parts 221 protrude toward the center direction of the rear opening 202. The connecting parts 221 are provided with threaded holes. The positions of the plurality of mounting screw holes 12 and the plurality of connecting parts 221 correspond one to one. The back panel 1 and the main cover 2 are installed and connected by the fasteners passing through the mounting screw holes 12 and the threaded holes of the connecting parts 221 in sequence.

[0082] By providing several positioning and fixing posts 11 on the front face of the backplate 1, the PCBA 6 can be precisely connected to these posts 11 using fasteners. This design not only simplifies the installation process but also ensures the accurate positioning of the PCBA 6 within the capacitor housing, improving installation accuracy. Furthermore, the presence of the positioning and fixing posts 11 enhances the stability of the connection between the PCBA 6 and the backplate, preventing loosening or dislodging due to vibration or impact.

[0083] A connecting portion 221 protruding toward the center is provided on the periphery of the rear frame 22, which provides a precise positioning function for the installation of the back plate 1 and the main cover 2. In addition, the connecting portion 211 is provided with a threaded hole connected to the back plate 1, which makes it unnecessary to provide the connecting threaded hole on the main cover 2 in the rear frame 22 with higher structural strength, thereby ensuring the structural strength and stability of the housing; at the same time, by providing a number of one-to-one corresponding connecting portions 221 and mounting screw holes 12, not only the connection points are increased, but also the firmness and reliability of the connection are enhanced by the threaded connection. The extended protruding connecting portion 221 not only provides a positioning function for the back plate 1 during installation, but also provides an installation connection point when the main cover 2 and the back plate 1 are installed. This dual connection structure makes the overall structure of the capacitor housing more stable, able to withstand greater external forces and vibrations, and improves the service life and reliability of the capacitor.

[0084] It is worth noting that although the solution does not directly mention the improvement of heat dissipation performance, the PCBA board 6 is specifically arranged in the main cover 2 and is installed and connected to the back plate 1 through the positioning and fixing columns 11 protruding from the back plate 1. A gap is left between the PCBA board 6 and the back plate 1, which helps to dissipate heat inside the capacitor, indirectly enhances the heat dissipation performance of the capacitor, and helps to maintain a stable operating temperature of the internal components.

[0085] Furthermore, a mounting bracket 5 is detachably provided on the back of the back panel 1, and a fixing hole 53 is provided at the lower portion of the mounting bracket 5. When the mounting bracket 5 is installed on the back panel 1, the fixing hole 53 protrudes from the bottom of the back panel 1, and the fixing hole 53 is used for installation and connection with the mounting surface.

[0086] Furthermore, a mounting rail 13 is provided on the back of the back plate 1, and an arc block 14 is provided in the middle of the mounting rail 13, and the arc portion of the arc block 14 is bent and protruded downward;

[0087] Sliders 51 are provided on both sides of the mounting frame 5. Two elastic clamping parts 52 are provided in the middle of the mounting frame 5. The elastic clamping parts 52 include a fixed end and an elastic free end 521. The fixed end is connected to the mounting frame 5. The elastic free end 521 extends obliquely upward. The two elastic free ends 521 are arranged opposite to each other and can be elastically deformed toward the mounting frame 5.

[0088] The sliding block 51 is connected to the mounting rail 13 , and the two elastic clamping portions 52 are clamped to the arc clamping block 14 .

[0089] By providing a removable mounting bracket 5 on the back of the backplate 1, the capacitor housing structure becomes more modular. This design allows users to flexibly install or remove the mounting bracket 5 as needed to accommodate different application scenarios or installation requirements. It also facilitates capacitor maintenance, upgrades, and component replacement, improving the product's maintainability and scalability.

[0090] The mounting frame 5 is provided with sliders 51 on both sides, which mate with the mounting rails 13 on the back of the back panel 1. This connection between the rails and the sliders makes the mounting frame installation process simple and quick. The user only needs to align the sliders with the rails and slide them into place to complete the installation. In addition, the arc-shaped clamping block 14 in the middle of the mounting rail 13 mates with the elastic clamping portion 52 on the mounting frame 5, further ensuring the stability and reliability of the mounting frame. Specifically, during the relative sliding assembly of the mounting frame 5 and the back panel 1, when the elastic clamping portion 52 in the middle of the mounting frame 5 moves to the arc-shaped clamping block 14, the elastic free end 521 of the elastic clamping portion 52 is squeezed by the arc-shaped clamping block 14 and deforms toward the mounting frame 5, allowing the elastic clamping portion 52 to pass through the arc-shaped clamping block 14. After the elastic clamping portion 52 has completely passed through the arc-shaped clamping block 14, the elastic free ends 521 of the elastic clamping portion 52 on both sides return to their original shape and are together clamped to the upper portion of the arc-shaped clamping block 14. Without the action of external force, the mounting frame 5 is difficult to separate from the back panel 1.

[0091] The mounting bracket 5 has fixing holes 53 at its lower portion. When the mounting bracket is attached to the backplate 1, the fixing holes 53 protrude from the bottom of the backplate 1. This design allows the mounting bracket to be attached to a mounting surface (such as a wall or cabinet) through the fixing holes 53, providing a variety of fixing options for the user. Users can choose the appropriate fixing method based on their actual needs to ensure that the capacitor housing is securely installed in the desired location.

[0092] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A capacitor housing structure, characterized in that: Including back panel, main cover, upper cover, lower cover and face cover; The main cover is provided with a front opening, a rear opening, an upper opening and a lower opening. The back plate is mounted on the rear portion of the main cover and is used to cover the rear opening. The upper cover is mounted on the upper portion of the main cover and is used to cover the upper opening. The lower cover is mounted on the lower portion of the main cover and is used to cover the lower opening. The face cover is mounted on the front portion of the main cover and is used to cover the front opening. The back panel, the main cover, the upper cover, the lower cover and the surface cover constitute a shell having an internal accommodating cavity, the accommodating cavity is used to accommodate the PCBA board, the upper cover and the lower cover are provided with openings, and the openings are used to cooperate with the components of the PCBA board.

2. The capacitor housing structure according to claim 1, wherein: The main cover includes a front frame and a rear frame, the front frame and the rear frame are parallel to each other, the front frame is located in the middle of the front of the rear frame, the front frame and the rear frame are connected by two side panels, the front opening is provided in the front frame, the rear opening is provided in the rear frame, and the opening area of the front opening is smaller than the opening area of the rear opening; The front frame is composed of two frame end plates and two frame side plates, the two frame end plates are parallel to each other, the two frame side plates are parallel to each other, the two ends of one frame side plate are respectively connected to the ends of the same side of the two frame end plates, and the side plates are formed by extending the frame side plates; A plurality of groups of mounting male parts are provided on the outer side of the frame end plate, and the mounting male parts are used for mounting and connecting the upper cover or the lower cover respectively.

3. The capacitor housing structure according to claim 2, wherein: The upper cover and the lower cover are of the same structure, and the secondary cover comprises two cover side plates, a cover end plate, a cover panel and a cover mounting plate; The two cover side plates are parallel to each other, the two sides of the cover end plate are respectively connected to the two cover side plates, the cover end plate is arranged on the top of the cover side plates, and the opening is arranged on the cover end plate; Both sides of the cover panel are connected to the two cover side panels respectively, the cover panel is arranged at the front of the cover side panels, and the top of the cover panel is connected to the front end of the cover end panel; The two sides of the cover mounting plate are respectively connected to the two cover side plates, the cover mounting plate is arranged at the bottom of the cover side plates, the front end of the cover mounting plate is connected to the bottom of the cover panel, and the cover mounting plate is provided with several groups of mounting female parts, and the mounting female parts are matched and connected with the mounting male parts.

4. The capacitor housing structure according to claim 3, wherein: The male mounting portion is a T-shaped protrusion, which includes a vertical portion and a horizontal portion. The bottom of the vertical portion is connected to the frame end plate, and the top of the vertical portion is connected to the horizontal portion. The horizontal cross-section area of the horizontal portion is larger than the horizontal cross-section area of the vertical portion. The cover mounting plate includes an upper mounting plate and a lower mounting plate, the upper mounting plate and the lower mounting plate are parallel to each other and distributed up and down, there is a mounting groove between the upper mounting plate and the lower mounting plate, the mounting groove cooperates with the horizontal portion, and the lower mounting plate is provided with a plurality of mounting notches at intervals at one end away from the cover panel, the mounting notches and the vertical portion, and the mounting notches and the mounting groove constitute a mounting mother portion.

5. The capacitor housing structure according to claim 4, characterized in that: A plurality of first clamping blocks are provided on the outer side of the frame end plate, and a plurality of first bayonet ports are provided on the lower mounting plate. The first clamping blocks are cooperatively connected with the first bayonet ports.

6. The capacitor housing structure according to claim 5, characterized in that: A second bayonet is provided on the outer side of the upper and lower parts of the side plate, and a second clamping block is provided on the inner side of the cover side plate, and the second clamping block is matched and connected with the second bayonet.

7. A capacitor housing structure according to any one of claims 2 to 6, characterized in that: A plurality of third clamping blocks are provided on the inner side of the front frame, and a plurality of third bayonet ports are provided on the rear side of the face cover, and the third clamping blocks are cooperatively connected with the third bayonet ports.

8. The capacitor housing structure according to claim 7, characterized in that: The front end surface of the back plate is provided with a plurality of positioning and fixing columns, and the PCBA board is installed and connected to the positioning and fixing columns through fasteners; The back panel is also provided with a plurality of mounting screw holes, which pass through the back panel. The peripheral side of the rear frame is provided with a plurality of connecting parts, which protrude toward the center of the rear opening. The connecting parts are provided with threaded holes. The positions of the plurality of mounting screw holes correspond one to one with the positions of the plurality of connecting parts. The back panel and the main cover are installed and connected by the fasteners passing through the mounting screw holes and the threaded holes of the connecting parts in sequence.

9. The capacitor housing structure according to claim 8, characterized in that: A mounting bracket is detachably provided on the back side of the back plate, and a fixing hole is provided at the lower portion of the mounting bracket. When the mounting bracket is installed on the back plate, the fixing hole protrudes from the bottom of the back plate, and the fixing hole is used for mounting and connecting with the mounting surface.

10. The capacitor housing structure according to claim 9, characterized in that: A mounting rail is provided on the back of the back plate, and an arc clamping block is provided in the middle of the mounting rail, wherein the arc portion of the arc clamping block is bent and protruded downward; Slide blocks are provided on both sides of the mounting frame, and two elastic clamping parts are provided in the middle of the mounting frame. The elastic clamping parts include a fixed end and an elastic free end. The fixed end is connected to the mounting frame, and the elastic free end extends obliquely upward. The two elastic free ends are arranged opposite to each other, and the elastic free ends can be elastically deformed toward the mounting frame. The sliding block is connected with the mounting rail, and the two elastic clamping parts are clamped with the arc clamping block.

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