A cabinet grounding structure

Abstract

This invention provides a cabinet grounding structure, belonging to the field of electrical equipment technology, including a support plate, locking components, connecting ears, and fasteners; the support plate has a first mounting hole and a first grounding part; the locking component is located behind the first mounting hole and has a conductive part; the connecting ears are located in front of the support plate; the back of the connecting ears has a second grounding part and a second mounting hole, the second grounding part being electrically connected to the first grounding part, or the conductive part being electrically connected to both the first and second grounding parts respectively; the fasteners pass through the second mounting hole and the first mounting hole from front to back and are fastened in the corresponding locking components; the front of the support plate includes a shielded part covered by multiple sets of connecting ears and an exposed part not covered by multiple sets of connecting ears; the front of the multiple sets of connecting ears and the exposed part are completely covered with an insulating coating so that the front of the grounding structure is a uniform color without any exposed white spots, improving the overall appearance of the cabinet.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment technology, and more specifically, relates to a cabinet grounding structure. Background Technology

[0002] The cabinet typically houses multiple power modules spaced vertically. For electrical safety, each power module requires individual grounding. Furthermore, because the power modules frequently need to be removed from the cabinet for maintenance, they are detachable from the cabinet, and a clearance is required between each adjacent power module to facilitate assembly and disassembly.

[0003] The power module is fixed to the front column of the cabinet via connecting lugs. The column is grounded, and the power module is grounded through the connecting lugs. The connecting lugs are generally located at the front of the column, and the two are detachably connected by bolt assemblies.

[0004] In existing technologies, to ensure reliable grounding between the connector lug and the column, the front of the column and the back of the connector lug are typically used as conductive surfaces, with the two conductive surfaces touching to increase the connection area and achieve reliable grounding of the power module. However, if the front of the column is used as the conductive surface without any coating treatment, the column will have exposed white areas. This will be noticeable when the front door of the cabinet is opened, affecting the customer's aesthetics. Summary of the Invention

[0005] The purpose of this invention is to provide a cabinet grounding structure, which aims to solve the technical problem of exposed columns affecting the appearance in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A rack grounding structure is provided for grounding multiple power modules disposed inside the rack, wherein the multiple power modules are spaced apart in a vertical direction, and each power module is detachably disposed within the rack; the rack grounding structure includes:

[0007] A support plate is disposed at the front of the cabinet and located on the left and right sides of the plurality of power modules; the support plate is provided with a plurality of first mounting holes spaced apart in the vertical direction; the support plate is also provided with a first grounding part;

[0008] Multiple locking elements are provided, each corresponding to one of the first mounting holes; the locking elements are located behind the first mounting holes and have conductive portions;

[0009] Multiple sets of connecting ears are connected one-to-one with multiple power modules; the connecting ears are located in front of the support plate; a second grounding part is provided on the back of the connecting ear, the second grounding part being electrically connected to the first grounding part, or the conductive part being electrically connected to both the first grounding part and the second grounding part; the connecting ear is also provided with a second mounting hole; and

[0010] Multiple fasteners correspond one-to-one with multiple locking elements; the fasteners pass through the second mounting hole and the first mounting hole sequentially from front to back and are fastened in the corresponding locking elements;

[0011] The front of the support plate includes a shielded portion covered by multiple sets of connecting ears, and an exposed portion not covered by multiple sets of connecting ears; the front of the multiple sets of connecting ears and the exposed portion are completely covered with an insulating coating so that the front of the grounding structure is a uniform color.

[0012] In one possible implementation, the first grounding portion includes a front grounding portion disposed on the shielding portion; the front grounding portion abuts against the second grounding portion to form a conductive connection.

[0013] In one possible implementation, the first grounding portion includes a front grounding portion disposed on the shielding portion; the conductive portion passes forward through the first mounting hole and extends to the front periphery of the first mounting hole; the front and back sides of the conductive portion abut against the second grounding portion and the front grounding portion, respectively, to form a conductive connection.

[0014] In one possible implementation, the shielding portion is also completely covered by the insulating coating; the first grounding portion is disposed on the back side of the support plate;

[0015] The conductive portion includes a front conductive portion and a rear conductive portion that are electrically connected, and an intermediate connecting portion connecting the front conductive portion and the rear conductive portion; the intermediate connecting portion is located inside the first mounting hole; the front conductive portion is located in front of the first mounting hole; the front conductive portion abuts against the second grounding portion to form a conductive connection; the rear conductive portion is located behind the first mounting hole, and the rear conductive portion abuts against the first grounding portion to form a conductive connection.

[0016] In some embodiments, the front conductive portion, the intermediate connecting portion, and the rear conductive portion form a snap-fit ​​groove; the snap-fit ​​groove snaps onto the vertical sidewall of the first mounting hole.

[0017] In some embodiments, the front conductive portion and the intermediate connecting portion, and the rear conductive portion and the intermediate connecting portion are respectively transitioned by rounded corners;

[0018] In the front-to-back direction, the length of the snap-fit ​​groove is greater than the length of the first mounting hole; during the tightening and fixing of the fastener, the front conductive part and the rear conductive part can move towards each other, shortening the length of the snap-fit ​​groove in the front-to-back direction, so that the front conductive part abuts against the second grounding part and the rear conductive part abuts against the first grounding part.

[0019] In some embodiments, there are movement gaps between the top surface of the intermediate connecting part and the upper wall of the first mounting hole, and between the bottom surface of the intermediate connecting part and the lower wall of the first mounting hole.

[0020] In some embodiments, the locking element includes:

[0021] The mounting base is located behind the first mounting hole; the mounting base has a receiving cavity; the conductive part is connected to the vertical two sides of the front end of the mounting base respectively; the mounting base also has a compensation part for conductive connection with the first grounding part.

[0022] A locking seat is located within the accommodating cavity; the locking seat has a locking hole, and the fastener passes through and is fastened within the locking hole.

[0023] In some embodiments, there are floating gaps between the outer peripheral wall of the keyhole seat and the inner peripheral wall of the receiving cavity, between the front side wall of the keyhole seat and the front side wall of the receiving cavity, and between the rear side wall of the keyhole seat and the rear side wall of the receiving cavity.

[0024] In some embodiments, the compensation part is located on the periphery of the lock hole seat and between the two conductive parts, and the front end of the compensation part is also provided with a flange, which is used to abut against the first grounding part to form a conductive connection.

[0025] The beneficial effects of the cabinet grounding structure provided by the present invention are as follows: Compared with the prior art, the cabinet grounding structure of the present invention uses fasteners passing through the second mounting hole and the first mounting hole and being fastened in the locking member to fix the connecting ear to the support plate; the support plate is provided with a first grounding part, and the back of the connecting ear is provided with a second grounding part. The first grounding part and the second grounding part are electrically connected, or the locking member is electrically connected to the first grounding part and the second grounding part respectively, so as to ensure that the connecting ear is grounded after being connected to the support plate, and realize the reliable grounding of the power module; moreover, the front of multiple sets of connecting ears and the exposed part of the support plate are completely covered with an insulating coating, so that the front of the grounding structure is a uniform color without any exposed white spots, which improves the overall appearance of the cabinet. Attached Figure Description

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

[0027] Figure 1 This is a schematic diagram of the cabinet grounding structure provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Enlarged structural diagram of point A in the middle circle;

[0029] Figure 3 This is an exploded structural diagram of the cabinet grounding structure provided in an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the connection structure between the locking component and the support plate of the cabinet grounding structure provided in this embodiment of the invention. Figure 1 ;

[0031] Figure 5 A schematic diagram of the connection structure between the locking component and the support plate of the cabinet grounding structure provided in this embodiment of the invention. Figure 2 ;

[0032] Figure 6 This is a schematic diagram of the locking component of the cabinet grounding structure provided in an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the connection structure between the mounting base and two mounting claws of the cabinet grounding structure provided in an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Support plate; 11. First mounting hole; 12. Support column; 13. Covering part; 14. Exposed part;

[0036] 2. Locking component; 21. Mounting base; 211. Receiving cavity; 212. Rear limiting plate; 213. Vertical plate; 214. Compensation part; 22. Locking hole seat; 221. Locking hole; 23. Conductive part; 231. Front conductive part; 232. Rear conductive part; 233. Intermediate connecting part; 234. Snap-fit ​​groove;

[0037] 3. Connecting ear; 31. First connecting plate; 311. Second mounting hole; 32. Second connecting plate;

[0038] 4. Fasteners;

[0039] 5. Power module. Detailed Implementation

[0040] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0041] It should be noted that the directions or positional relationships indicated by "front", "rear", "inner", "outer", "upper", and "lower" in this embodiment are based on the orientation of the cabinet itself. The front of the cabinet represents "front", the back of the cabinet represents "rear", the top of the cabinet represents "upper", the bottom of the cabinet represents "lower", the "inner" side refers to the side facing the inner cavity of the cabinet, and the "outer" side refers to the side facing the outside of the cabinet.

[0042] In addition, the front-back direction defined in the embodiments of the present invention refers to the spacing between the front and back of the cabinet, the left-right direction refers to the spacing between the two sides of the cabinet, and the up-down direction refers to the spacing between the top and bottom surfaces of the cabinet.

[0043] Please refer to the following: Figure 1 and Figure 2 The rack grounding structure provided by the present invention will now be described. The rack grounding structure is used to ground multiple power modules 5 installed inside the rack respectively. The multiple power modules 5 are spaced apart in the vertical direction, and each power module 5 can be detachably installed inside the rack. The rack grounding structure includes a support plate 1, multiple locking parts 2, connecting lugs 3, and multiple fasteners 4. A support plate 1 is located at the front of the cabinet and on the left and right sides of multiple power modules 5. The support plate 1 has multiple first mounting holes 11 spaced apart in the vertical direction. The support plate 1 also has a first grounding portion. Multiple locking elements 2 correspond to a first mounting hole 11. The locking elements 2 are located behind the first mounting holes 11 and have conductive portions 23. Multiple sets of connecting ears 3 are connected to multiple power modules 5 one-to-one. The connecting ears 3 are located in front of the support plate 1. A second grounding portion is located on the back of the connecting ear 3, and the second grounding portion is electrically connected to the first grounding portion, or the conductive portion 23 is electrically connected to both the first and second grounding portions. The connecting ear 3 also has a second mounting hole 311. Multiple fasteners 4 correspond to multiple locking elements 2 one-to-one. The fasteners 4 pass through the second mounting hole 311 and the first mounting hole 11 sequentially from front to back and are fastened within the corresponding locking elements 2.

[0044] The front of the support plate 1 includes a shielding portion 13 that is covered by multiple sets of connecting ears 3, and an exposed portion 14 that is not covered by multiple sets of connecting ears 3; the front of the multiple sets of connecting ears 3 and the exposed portion 14 are completely covered with an insulating coating so that the front of the grounding structure is a uniform color.

[0045] Multiple power modules 5 are spaced apart in the vertical direction, and each power module 5 can be pulled out and installed inside the cabinet (a support beam is provided inside the cabinet to support and allow the power module 5 to slide); in order to ensure heat dissipation performance and facilitate the pulling out of each power module 5, there is an installation gap between each two adjacent power modules 5; each power module 5 is equipped with a connecting ear 3 at both ends, which is fixed to the support plate 1 through the connecting ear 3, and the connecting ear 3 is also electrically connected to the power module 5.

[0046] To facilitate the assembly of the locking component 2, the support plate 1 has a thin plate structure, and the locking component 2 is located behind the support plate 1. When assembling the power module 5, first place the power module 5 on the support beam inside the cabinet, adjust the position of the power module 5 so that the second mounting hole 311 is approximately axially aligned with the first mounting hole 11, and then use fasteners 4 to pass through the second mounting hole 311 and the first mounting hole 11 and tighten them in the locking component 2. The locking component 2 can be pre-locked in the first mounting hole 11, or it can be pre-welded to the back of the support plate 1 and aligned with the first mounting hole 11. Alternatively, while tightening the fasteners 4, a person can hold the back of the support plate 1 where the locking component 2 is placed and then perform the tightening operation.

[0047] The support plate 1 is used to fix multiple power modules 5. To improve the strength of the support plate 1, a support column 12 is connected to the rear of the support plate 1. The support column 12 can increase the support volume of the support plate 1 and improve the overall stability of the cabinet. It should be noted that the support column 12 is a hollow structure, and the inner side of the support column 12 (i.e., the side facing the power module 5) has an elongated opening, which is used to facilitate the assembly of the locking component 2.

[0048] The support plate 1 is provided with a first grounding part, which is directly grounded; the back of the connecting ear 3 is provided with a second grounding part, which is electrically connected to the first grounding part, or the second grounding part is electrically connected to the first grounding part through the locking member 2, so as to realize the grounding of the power module 5.

[0049] An insulating coating is formed on the exposed portion 14 of the support plate 1 and the back of the connecting ear 3 through a coating process. During the coating process, areas that do not require coating are covered with a masking paper. After coating is completed, the areas covered by the masking paper become the grounding portion.

[0050] It should be noted that, in addition to the exposed portion 14 being covered with an insulating coating, other parts of the support plate 1 can also be coated with an insulating coating. To simplify the coating process, the entire front of the support plate 1 can be coated with an insulating coating, and the back of the support plate 1 can form a first grounding portion; or the entire front of the support plate 1 can be coated with an insulating coating, and the back of the support plate 1 can be coated with an insulating coating on both sides of the first mounting hole 11, and the back of the support plate 1 can form a first grounding portion above and below the first mounting hole 11; in addition, an insulating coating can also be coated on the back of the support plate 1, and the first grounding portion can be formed on the shielding portion 13 and the inner side of the support plate 1.

[0051] This embodiment does not limit the specific coating area and the specific location of the first grounding part. As long as the front of the connecting ear 3 and the exposed part 14 are completely covered with the insulating coating, the front of the grounding structure will be a uniform color.

[0052] Compared with the prior art, the cabinet grounding structure provided by the present invention uses fasteners 4 passing through the second mounting hole 311 and the first mounting hole 11 and being fastened in the locking member 2 to fix the connecting ear 3 to the support plate 1; the support plate 1 is provided with a first grounding part, and the back of the connecting ear 3 is provided with a second grounding part. The first grounding part and the second grounding part are electrically connected, or the locking member 2 is electrically connected to the first grounding part and the second grounding part respectively, so as to ensure that the connecting ear 3 is grounded after being connected to the support plate 1, and realize the reliable grounding of the power module 5; moreover, the front of the multiple sets of connecting ears 3 and the exposed part 14 of the support plate 1 are completely covered with an insulating coating, so that the front of the grounding structure is uniformly colored without any white spots, which improves the overall appearance of the cabinet.

[0053] Preferably, please refer to Figure 3 In some embodiments, the connecting ear 3 is an L-shaped plate structure, including a first connecting plate 31 and a second connecting plate 32. The first connecting plate 31 is located in front of the support plate 1, and the second connecting plate 32 is fixedly connected to the side of the power module 5. Viewed from the front, the second connecting plate 32 is obscured by the first connecting plate 31. The entire second connecting plate 32 and the back of the first connecting plate 31 are not coated, but a second grounding portion can be formed on the entire second connecting plate 32 and the back of the first connecting plate 31; the front of the first connecting plate 31 is covered with an insulating coating.

[0054] In some embodiments, the first grounding portion includes a front grounding portion disposed on the shielding portion 13; the front grounding portion abuts against the second grounding portion to form a conductive connection.

[0055] In addition, the first grounding part also includes a side grounding part disposed on the side of the support plate 1, which is connected to the front grounding part to ground the support plate 1. Alternatively, the first grounding part also includes a rear grounding part disposed on the back of the support plate 1, which abuts against the locking member 2, and the front grounding part is electrically connected to the rear grounding part through the locking member 2 to achieve grounding of the support plate 1.

[0056] A front grounding part is provided on the shielding part 13, and the grounding part abuts against the second grounding part, which can increase the conductive connection area between the connecting ear 3 and the support plate 1 and ensure that the power module 5 is reliably grounded.

[0057] The locking component 2 can be pre-locked in the first mounting hole 11, or it can be pre-welded and fixed to the back of the support plate 1 and aligned with the first mounting hole 11. Alternatively, between tightening the fasteners 4, a person can hold the back of the support plate 1 where the locking component 2 is placed and then perform the tightening operation.

[0058] To optimize the fastening operation of the locking member 2 and the fastener 4, in some embodiments, the first grounding portion includes a front grounding portion disposed on the shielding portion 13; the conductive portion 23 passes forward through the first mounting hole 11 and extends to the outer periphery of the front side of the first mounting hole 11; the front and back sides of the conductive portion 23 abut against the second grounding portion and the front grounding portion, respectively, to form a conductive connection. Preferably, the conductive portion 23 has a flat plate structure.

[0059] It should be noted that the first grounding part in this embodiment is set in the same way as the first grounding part in the previous embodiment. The difference is that the conductive part 23 in this embodiment is located in front of the first mounting hole 11.

[0060] The conductive part 23 passes forward through the first mounting hole 11, that is, a part of the locking member 2 is set in the first mounting hole 11, so that the locking member 2 can be locked in the first mounting hole 11 in advance. During the fastening operation, the fastener 4 can be fastened without the operator holding or supporting the locking member 2, which improves the convenience of the fastening operation.

[0061] In other embodiments, the first grounding portion and the conductive portion 23 described above may also employ, for example... Figures 3 to 5 The structure shown is described in the following document. Figures 3 to 5 The shielding part 13 is also completely covered with an insulating coating; the first grounding part is located on the back of the support plate 1.

[0062] The front of the shielding part 13 is also completely covered with an insulating coating. In other words, the front of the support plate 1 is completely covered with an insulating coating. During the coating process, the front of the support plate 1 does not need to be covered with a masking paper. Only the back of the support plate 1 needs to be covered with a masking paper, which greatly simplifies the operation before the coating process and can also completely ensure the uniform extension of the front of the support plate 1.

[0063] Furthermore, the conductive portion 23 includes a front conductive portion 231 and a rear conductive portion 232 that are electrically connected, and an intermediate connecting portion 233 connecting the front conductive portion 231 and the rear conductive portion 232; the intermediate connecting portion 233 is located inside the first mounting hole 11; the front conductive portion 231 is located in front of the first mounting hole 11; the front conductive portion 231 abuts against the second grounding portion to form a conductive connection; the rear conductive portion 232 is located behind the first mounting hole 11, and the rear conductive portion 232 abuts against the first grounding portion to form a conductive connection. Therefore, the second grounding portion is electrically connected to the first grounding portion through the conductive portion 23 to ensure that the power module 5 is properly grounded.

[0064] The intermediate connecting part 233 is located inside the first mounting hole 11, so that the locking part 2 can be locked in the first mounting hole 11 in advance. During the fastening operation, the fastener 4 can be fastened without the operator holding or supporting the locking part 2, which improves the convenience of the fastening operation.

[0065] It should be noted that the above-mentioned conductive part 23 is also applicable to embodiments in which the first grounding part includes a front grounding part provided on the shielding part 13, except that the front and back sides of the front conductive part 231 abut against the second grounding part and the front grounding part respectively to form a conductive connection.

[0066] Please see Figure 5 , Figure 6 and Figure 7 Based on the above embodiment, the front conductive part 231, the middle connecting part 233 and the rear conductive part 232 form a snap-fit ​​groove 234; the snap-fit ​​groove 234 snaps onto the vertical side wall of the first mounting hole 11.

[0067] To simplify the structure of the first mounting hole 11 and facilitate engagement with the snap-fit ​​groove 234, the first mounting hole 11 is preferably a square hole. Furthermore, to facilitate the insertion of the fastener 4, the second mounting hole 311 is preferably an oblong hole, and the upper and lower diameters of the second mounting hole 311 are greater than or equal to the upper and lower diameters of the first mounting hole 11.

[0068] The front conductive part 231, the rear conductive part 232, and the intermediate connecting part 233 are preferably plate-shaped structures. That is, the conductive part 23 is preferably a bent plate-shaped structure to form a snap-fit ​​groove 234. The snap-fit ​​groove 234 snaps onto the vertical side wall of the first mounting hole 11, which can limit the locking member 2 in the front-back direction and the up-down direction to prevent the locking member 2 from disengaging from the first mounting hole 11. Preferably, in order to limit the locking member 2 in the left-right direction as well, the conductive part 23 is provided with two sets, and the two snap-fit ​​grooves 234 are respectively snapped onto the vertical side walls on both sides of the first mounting hole 11.

[0069] The two conductive parts 23 can form a limit in three directions, thereby ensuring that the locking member 2 is embedded in the first mounting hole 11 and will not come out of the first mounting hole 11 during the fastening operation, thus eliminating the need for operator support and simplifying the fastening operation.

[0070] Please see Figure 5 , Figure 6 and Figure 7 Based on the above embodiment, the front conductive part 231 and the middle connecting part 233, and the rear conductive part 232 and the middle connecting part 233 are respectively connected by rounded corners; in the front-rear direction, the length of the snap-fit ​​groove 234 is greater than the length of the first mounting hole 11; in the front-rear direction, the length of the snap-fit ​​groove 234 is greater than the length of the first mounting hole 11; during the tightening and fixing of the fastener 4, the front conductive part 231 and the rear conductive part 232 can move towards each other, shortening the length of the snap-fit ​​groove 234 in the front-rear direction, so that the front conductive part 231 abuts against the second grounding part and the rear conductive part 232 abuts against the first grounding part.

[0071] In the front-to-back direction, the length of the snap-fit ​​groove 234 is greater than the length of the first mounting hole 11. That is to say, the groove depth of the snap-fit ​​groove 234 has an installation margin relative to the thickness of the first mounting hole 11. When assembling the locking part 2, the front conductive part 231 can quickly pass through the first mounting hole 11, and the snap-fit ​​groove 234 can quickly snap onto the vertical side wall of the first mounting hole 11.

[0072] Furthermore, since the power module 5 has a certain weight, it tends to drop during assembly, making it difficult to perfectly align the second mounting hole 311 with the first mounting hole 11, and to perfectly align the fastener 4 with the locking member 2. However, the length of the snap-fit ​​groove 234 is greater than the length of the first mounting hole 11, allowing the locking member 2 to swing slightly. During the assembly of the power module 5, the position of the locking member 2 can be finely adjusted, or the position of the locking member 2 can be found and adjusted by swinging the fastener 4, so that the fastener 4 and the locking member 2 are perfectly aligned and locked.

[0073] Furthermore, the front conductive part 231 and the middle connecting part 233, and the rear conductive part 232 and the middle connecting part 233 are respectively connected by rounded corners, so that the front conductive part 231 and the middle connecting part 233, and the rear conductive part 232 and the middle connecting part 233 can be relatively deflected, that is, the included angle between the front conductive part 231 and the middle connecting part 233, and the included angle between the rear conductive part 232 and the middle connecting part 233 can change; during the process of tightening and fixing the fastener 4, the included angle between the front conductive part 231 and the middle connecting part 233 becomes larger, and the included angle between the rear conductive part 232 and the middle connecting part 233 becomes smaller, and the front conductive part 231 and the rear conductive part 232 can move towards each other, shortening the length of the snap-fit ​​groove 234 in the front-back direction, so that the rear conductive part 232 abuts against the first grounding part and the front conductive part 231 abuts against the second grounding part.

[0074] Furthermore, the tighter the connection between the fastener 4 and the locking member 2, the more closely the rear conductive part 232 abuts against the first grounding part, resulting in stronger conductivity and better grounding. In other words, when assembling the power module 5, as long as the operator tightens the fastener 4 sufficiently, the power module 5 can be reliably grounded without needing to check whether the rear conductive part 232 abuts against the second grounding part.

[0075] In some embodiments, the conductive portion 23 and the first mounting hole 11 may also be connected by a means such as Figure 4 and Figure 5 The structure shown is described in the following document. Figure 4 and Figure 5 There are movement gaps between the top surface of the intermediate connecting part 233 and the upper wall of the first mounting hole 11, and between the bottom surface of the intermediate connecting part 233 and the lower wall of the first mounting hole 11. That is to say, in the vertical direction, the first mounting hole 11 has a margin relative to the locking member 2, and the locking member 2 can move up and down in the first mounting hole 11.

[0076] The locking member 2 can move up and down within the first mounting hole 11 to accommodate the weight of the power module 5. When the fastener 4 is tightened, the locking member 2 can float in the up and down direction, allowing for fine adjustment of the position of the locking member 2. Alternatively, the position of the locking member 2 can be found and adjusted by the fastener 4 so that the fastener 4 and the locking member 2 are completely locked in place.

[0077] In some embodiments, the locking element 2 may be as follows: Figure 6 and Figure 7 The structure shown is described in the following document. Figure 6 and Figure 7The locking component 2 includes a mounting base 21 and a locking hole seat 22. The mounting base 21 is located behind the first mounting hole 11; the mounting base 21 has a receiving cavity 211; conductive parts 23 are respectively connected to the vertical two sides of the front end of the mounting base 21; the mounting base 21 also has a compensation part 214 for conductive connection with the first grounding part; the locking hole seat 22 is limited within the receiving cavity 211; the locking hole seat 22 has a locking hole 221, and the fastener 4 passes through and is fastened in the locking hole 221; preferably, the locking hole 221 is a threaded hole, and the fastener 4 is a bolt.

[0078] Mounting base 21 clamps and fixes lock hole base 22 through receiving groove, eliminating the need for welding assembly, simplifying the connection method and making the assembly process more efficient.

[0079] Specifically, the mounting base 21 includes a rear limiting plate 212 and two vertical plates 213. The rear limiting plate 212 is located behind the lock hole base 22; the rear end edges of the two vertical plates 213 are respectively connected to the left and right edges of the rear limiting plate 212, and their front end edges are respectively connected to the two conductive parts 23. In addition, the compensation part 214 has a plate-like structure. Figure 6 and Figure 7 It has two compensation parts 214. The rear edge of the two compensation parts 214 is connected to the upper edge and the lower edge of the rear limit plate 212, respectively, and the front edge is used to abut against the first grounding part.

[0080] Specifically, the rear edge of the rear conductive part 232, or the outer edge of the rear conductive part 232, is connected to the vertical side edge of the mounting base 21. The rear conductive part 232 needs to connect with the mounting base 21, sacrificing some of its contact area with the first grounding part. To ensure that the conductive part 23 can be clamped onto the side wall of the first mounting hole 11, the front conductive part 231 needs to extend a certain area outward from the periphery of the first mounting hole 11. This results in the contact area between the front conductive part 231 and the second grounding part being larger than the contact area between the rear conductive part 232 and the first grounding part. To ensure the balance of the two contact areas and reduce impedance, this embodiment also provides a compensation part 214 on the mounting base 21. After tightening the fastener 4, the compensation part 214 can also contact the first grounding part, forming a conductive connection, which can further increase the contact area between the locking member 2 and the first grounding part, reducing impedance.

[0081] The compensation part 214 is located between the periphery of the lock hole seat 22 and the two conductive parts 23. Preferably, in order to further increase the contact area between the locking member 2 and the first grounding part, an upward and / or downward folding flange can be provided at the front end of the compensation part 214. The flange is used to abut against the first grounding part to form a conductive connection.

[0082] In some embodiments, floating gaps exist between the outer peripheral wall of the keyhole seat 22 and the inner peripheral wall of the receiving cavity 211, between the front side wall of the keyhole seat 22 and the front side wall of the receiving cavity 211, and between the rear side wall of the keyhole seat 22 and the rear side wall of the receiving cavity 211. That is, the keyhole seat 22 can move and deflect within the receiving cavity 211. The deflection can be a slight rotation in the front-back direction or a slight oscillation in the front-back direction.

[0083] The mounting base 21 is located behind the first mounting hole 11. There is no fixed relationship between the mounting base 21 and the first mounting hole 11. The mounting base 21 is preset at the first mounting hole 11 by the conductive part 23, so that the mounting base 21 can change position relative to the first mounting hole 11. Moreover, the locking hole seat 22 can move and deflect within the receiving cavity 211, which is also to adapt to the weight of the power module 5 itself. When tightening the fastener 4, the position of the locking hole seat 22 is found and adjusted by the fastener 4 so that the fastener 4 and the locking hole 221 of the locking hole seat 22 are completely locked.

[0084] In addition, since the locking seat 22 can move within the accommodating cavity 211, during the tightening of the fastener 4, the locking seat 22 gradually moves towards the front end of the accommodating cavity 211, that is, the locking seat 22 gradually approaches the rear conductive part 232 and finally abuts against the rear conductive part 232, applying a forward pressing force to the rear conductive part 232; moreover, the tighter the fastener 4 is tightened, the greater the pressing force applied by the locking seat 22 to the rear conductive part 232, the more tightly the rear conductive part 232 abuts against the first grounding part, the stronger the conductivity, the better the grounding, and further ensure the reliable grounding of the power module 5.

[0085] With the dual floating effect of the mounting base 21 floating within the first mounting hole 11 and the locking seat 22 floating within the receiving cavity 211, the final fastening position of the locking seat 22 can be found and adjusted using the fastener 4. This not only greatly simplifies the fastening operation of the fastener 4 and achieves a reliable connection between the connecting ear 3 and the support plate 1, but also further ensures the reliable grounding of the power module 5.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rack grounding structure for grounding multiple power modules (5) disposed inside a rack, wherein the multiple power modules (5) are spaced apart in a vertical direction, and each power module (5) is detachably disposed inside the rack; characterized in that, The cabinet grounding structure includes: A support plate (1) is provided at the front of the cabinet and on the left and right sides of the multiple power modules (5); the support plate (1) is provided with multiple first mounting holes (11) spaced apart in the vertical direction; the support plate (1) is also provided with a first grounding part; Multiple locking elements (2) are respectively corresponding to one of the first mounting holes (11); the locking elements (2) are located behind the first mounting holes (11) and have conductive parts (23); Multiple sets of connecting ears (3) are connected one-to-one with multiple power modules (5); the connecting ears (3) are located in front of the support plate (1); a second grounding part is provided on the back of the connecting ear (3), the second grounding part is electrically connected to the first grounding part, or the conductive part (23) is electrically connected to the first grounding part and the second grounding part respectively; a second mounting hole (311) is also provided on the connecting ear (3); and Multiple fasteners (4) correspond one-to-one with multiple locking elements (2); the fasteners (4) pass through the second mounting hole (311) and the first mounting hole (11) from front to back and are fastened in the corresponding locking elements (2); The front of the support plate (1) includes a shielding part (13) that is shielded by multiple sets of connecting ears (3) and an exposed part (14) that is not shielded by multiple sets of connecting ears (3); the front of multiple sets of connecting ears (3) and the exposed part (14) are completely covered with an insulating coating so that the front of the cabinet grounding structure is a uniform color.

2. The cabinet grounding structure as described in claim 1, characterized in that, The first grounding portion includes a front grounding portion disposed on the shielding portion (13); the front grounding portion abuts against the second grounding portion to form a conductive connection.

3. The cabinet grounding structure as described in claim 1, characterized in that, The first grounding portion includes a front grounding portion disposed on the shielding portion (13); the conductive portion (23) passes forward through the first mounting hole (11) and extends to the outer periphery of the front side of the first mounting hole (11); the front and back sides of the conductive portion (23) respectively abut against the second grounding portion and the front grounding portion to form a conductive connection.

4. The cabinet grounding structure as described in claim 1, characterized in that, The shielding part (13) is also completely covered by the insulating coating; the first grounding part is disposed on the back of the support plate (1); The conductive part (23) includes a front conductive part (231) and a rear conductive part (232) that are electrically connected, and an intermediate connecting part (233) that connects the front conductive part (231) and the rear conductive part (232); the intermediate connecting part (233) is located inside the first mounting hole (11); the front conductive part (231) is located in front of the first mounting hole (11); the front conductive part (231) abuts against the second grounding part to form a conductive connection; the rear conductive part (232) is located behind the first mounting hole (11), and the rear conductive part (232) abuts against the first grounding part to form a conductive connection.

5. The cabinet grounding structure as described in claim 4, characterized in that, The front conductive part (231), the middle connecting part (233) and the rear conductive part (232) form a snap-fit ​​groove (234); the snap-fit ​​groove (234) snaps into the vertical side wall of the first mounting hole (11).

6. The cabinet grounding structure as described in claim 5, characterized in that, The front conductive part (231) and the middle connecting part (233), and the rear conductive part (232) and the middle connecting part (233) are respectively connected by rounded corners; In the front-to-back direction, the length of the snap-fit ​​groove (234) is greater than the length of the first mounting hole (11); during the tightening and fixing of the fastener (4), the front conductive part (231) and the rear conductive part (232) can move towards each other, shortening the length of the snap-fit ​​groove (234) in the front-to-back direction, so that the front conductive part (231) abuts against the second grounding part and the rear conductive part (232) abuts against the first grounding part.

7. The cabinet grounding structure as described in claim 4 or 5, characterized in that, There are movement gaps between the top surface of the intermediate connecting part (233) and the upper wall of the first mounting hole (11), and between the bottom surface of the intermediate connecting part (233) and the lower wall of the first mounting hole (11).

8. The cabinet grounding structure as described in claim 4 or 5, characterized in that, The locking element (2) includes: Mounting base (21) is located behind the first mounting hole (11); the mounting base (21) has a receiving cavity (211); the conductive part (23) is connected to the vertical two sides of the front end of the mounting base (21); the mounting base (21) also has a compensation part (214) for conductive connection with the first grounding part. The lock hole seat (22) is located within the accommodating cavity (211); the lock hole seat (22) has a locking hole (221), and the fastener (4) passes through and is fastened in the locking hole (221).

9. The cabinet grounding structure as described in claim 8, characterized in that, There are floating gaps between the outer peripheral wall of the lock seat (22) and the inner peripheral wall of the accommodating cavity (211), between the front side wall of the lock seat (22) and the front side wall of the accommodating cavity (211), and between the rear side wall of the lock seat (22) and the rear side wall of the accommodating cavity (211).

10. The cabinet grounding structure as described in claim 8, characterized in that, The compensation part (214) is located between the periphery of the lock hole seat (22) and the two conductive parts (23). The front end of the compensation part (214) is also provided with a flange, which is used to abut against the first grounding part to form a conductive connection.

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