Rack busbar

Abstract

The invention discloses a rack busbar, and relates to the technical field of connectors, the rack busbar is used for being electrically connected with a power supply and supplying power to a server, the rack busbar comprises a shell, a first busbar, a second busbar and an insulating strip, the shell has a length direction, a width direction and a height direction, the shell comprises a bottom plate and two side plates, and the two side plates are arranged on the bottom plate. The two side plates are connected to the two opposite sides, extending in the length direction, of the bottom plate, and a mounting groove is defined by the two side plates and the bottom plate. The first busbar is arranged in the mounting groove and extends in the length direction; the second busbar is arranged in the mounting groove and extends in the length direction; the insulating strip is clamped between the first busbar and the second busbar and extends in the length direction, and a groove is formed in the end, away from the bottom plate, of the insulating strip and extends in the length direction. The rack busbar provided by the invention aims to prolong a creepage path between the two busbars and reduce potential safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to a rack busbar. Background Art

[0002] A rack busbar is a power distribution system designed for server racks in data centers and complies with the OCP (Open Compute Project) specification. The main function of the rack busbar is to efficiently and safely transmit power from a power rack or a PSU (Power Supply Unit) to each server node in the server rack through copper bars.

[0003] After the rack busbar is energized, a leakage current path, that is, a creepage path, will be formed on the surface of the insulating material. If the creepage distance of the creepage path is insufficient, surface flashover or breakdown will occur, which will damage the rack busbar at least and cause casualties at worst. Summary of the Invention

[0004] The main object of the present invention is to propose a rack busbar, aiming to extend the creepage path between two busbars and reduce potential safety hazards.

[0005] To achieve the above object, the rack busbar proposed by the present invention is used to be electrically connected to a power supply and supply power to a server. The rack busbar includes a housing, a first busbar, a second busbar, and an insulating strip. The housing has a length direction, a width direction, and a height direction. The housing includes a bottom plate and two side plates. The two side plates are connected to two opposite sides of the bottom plate extending along the length direction. The two side plates and the bottom plate enclose an installation groove. The first busbar is arranged in the installation groove and extends along the length direction. The second busbar is arranged in the installation groove and extends along the length direction. The insulating strip is clamped between the first busbar and the second busbar and extends along the length direction. One end of the insulating strip away from the bottom plate is provided with a groove, and the groove extends along the length direction.

[0006] In one embodiment, the cross-sectional shape of the groove along the vertical direction is a tapered shape.

[0007] In one embodiment, the groove includes a first groove, a second groove, and a third groove. The first groove, the second groove, and the third groove extend along the length direction. The first groove, the second groove, and the third groove are sequentially connected and communicated in the height direction. The cross-sectional shape of the first groove along the vertical direction is a rectangle, the cross-sectional shape of the second groove along the vertical direction is a trapezoid, and the cross-sectional shape of the third groove along the vertical direction is an arc.

[0008] In one embodiment, the depth of the groove in the height direction is greater than or equal to 27.16 mm and less than or equal to 40.74 mm.

[0009] In one embodiment, the ratio between the depth of the groove in the height direction and the height of the insulating strip in the height direction is greater than or equal to 0.16 and less than or equal to 0.24.

[0010] In one embodiment, both the first busbar and the second busbar include integrally formed heads and shoulders, and the position of the bottom of the groove in the height direction is higher than the shoulders of the first busbar and the second busbar.

[0011] In one embodiment, the ratio between the width of the shoulder of the first busbar in the width direction and the vertical distance between the two side plates is greater than or equal to 0.216 and less than or equal to 0.324.

[0012] In one embodiment, the frame busbar further includes two grounding bars. One grounding bar is disposed on one side plate and is located near the notch of the installation groove. The frame busbar further includes a plurality of gaskets. Some of the gaskets are interposed between the first busbar and one side plate at intervals, and the rest of the gaskets are interposed between the second busbar and the other side plate at intervals.

[0013] In one embodiment, the thickness of the gasket in the width direction is greater than or equal to 3.2 mm and less than or equal to 4.8 mm.

[0014] In one embodiment, the ratio between the thickness of the gasket in the width direction and the vertical distance between the two side plates is greater than or equal to 0.08 and less than or equal to 0.12.

[0015] The frame busbar provided by the technical solution of the present invention includes a housing, a first busbar, a second busbar, and an insulating strip. The first busbar and the second busbar are disposed in the housing, the insulating strip is clamped between the first busbar and the second busbar, a groove is formed at one end of the insulating strip away from the bottom plate, and a creepage path is formed between one end of the first busbar away from the bottom plate and one end of the second busbar away from the bottom plate through the groove. By extending the creepage path between one end of the first busbar away from the bottom plate and one end of the second busbar away from the bottom plate through the groove, potential safety hazards are reduced and accidents are decreased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the rack busbar provided by the present invention;

[0018] Figure 2 It is a schematic structural diagram of another embodiment of the rack busbar provided by the present invention;

[0019] Figure 3 is Figure 2 a partial enlarged view of A in.

[0020] Explanation of the reference numerals in the drawings:

[0021] L, length direction; W, width direction; H, height direction; 100, rack busbar; 1, outer shell; 11, bottom plate; 12, side plate; 13, installation groove; 2, first busbar; 21, head; 22, shoulder; 3, second busbar; 4, insulating strip; 41, groove; 411, first groove; 412, second groove; 413, third groove; 5, grounding strip; 6, gasket.

[0022] The realization of the object, functional characteristics and advantages of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement situation between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] A rack busbar is a power distribution system designed for server racks in a data center and complies with the OCP (Open Compute Project) specification. The main function of the rack busbar is to efficiently and safely transmit power from a power rack or PSU (Power Supply Unit) to each server node in the server rack through copper bars.

[0027] After the rack busbar is powered on, a leakage current path, that is, a creepage path, will be formed on the surface of the insulating material. If the creepage distance of the creepage path is insufficient, surface flashover or breakdown will occur, which will damage the rack busbar at worst and cause casualties at worst.

[0028] The present invention provides a rack busbar, aiming to extend the creepage path between two busbars and reduce potential safety hazards.

[0029] Please refer to Figures 1 to 3 , in an embodiment of the present invention, the rack busbar 100 is used to be electrically connected to a power source and supply power to a server. The rack busbar 100 includes a housing 1, a first busbar 2, a second busbar 3, and an insulating strip 4. The housing 1 has a length direction L, a width direction W, and a height direction H. The housing 1 includes a bottom plate 11 and two side plates 12. The two side plates 12 are connected to opposite sides of the bottom plate 11 extending along the length direction L. The two side plates 12 and the bottom plate 11 enclose an installation groove 13; the first busbar 2 is disposed in the installation groove 13 and extends along the length direction L; the second busbar 3 is disposed in the installation groove 13 and extends along the length direction L; the insulating strip 4 is clamped between the first busbar 2 and the second busbar 3 and extends along the length direction L. One end of the insulating strip 4 away from the bottom plate 11 is provided with a groove 41, and the groove 41 extends along the length direction L.

[0030] In this embodiment, the housing 1 includes a bottom plate 11 and two side plates 12. One side plate 12 is connected to one side of the bottom plate 11 in the length direction L. The installation groove 13 formed by enclosing the bottom plate 11 and the two side plates 12 provides stable mechanical support for the first bus bar 2, the second bus bar 3, and the insulating strip 4. The housing 1 is made of an insulating material to prevent leakage of electricity through the housing 1, such as hard plastic, etc. The materials and shapes of the first bus bar 2 and the second bus bar 3 are common materials and shapes on the market, and no further limitations are made here. The housing 1, the first bus bar 2, the second bus bar 3, and the insulating strip 4 are all provided with a number of connection holes, and a number of connecting pieces are respectively inserted through the number of connection holes to connect the above four parts into one body. The groove 41 is a groove structure longitudinally extending along the top of the insulating strip 4. Specifically, it can adopt a rectangular, trapezoidal, arc-shaped cross-section or a combined form of the above several shapes. By changing the surface profile of the groove 41, the creepage path between the ends of the two bus bars is extended, thereby reducing potential safety hazards. The insulating strip 4 is clamped between the two bus bars to achieve an insulating effect and can be made of an insulating material, such as rubber, etc.

[0031] The rack bus bar 100 provided by the technical solution of the present invention includes a housing 1, a first bus bar 2, a second bus bar 3, and an insulating strip 4. The first bus bar 2 and the second bus bar 3 are arranged inside the housing 1. The insulating strip 4 is clamped between the first bus bar 2 and the second bus bar 3. A groove 41 is provided at one end of the insulating strip 4 away from the bottom plate 11. A creepage path is formed between one end of the first bus bar 2 away from the bottom plate 11 and one end of the second bus bar 3 away from the bottom plate 11 through the groove 41. The creepage path between one end of the first bus bar 2 away from the bottom plate 11 and one end of the second bus bar 3 away from the bottom plate 11 is extended through the groove 41, reducing potential safety hazards and reducing the occurrence of accidents.

[0032] In the embodiment of the present invention, the cross-sectional shape of the groove 41 in the vertical direction is a tapered shape.

[0033] In this embodiment, the cross-sectional shape of the groove 41 in the vertical direction is a tapered shape, such as a trapezoid or an inverted triangle, further extending the creepage path between one end of the first bus bar 2 away from the bottom plate 11 and one end of the second bus bar 3 away from the bottom plate 11, reducing potential safety hazards.

[0034] In an example, the groove 41 includes a first groove 411 and a second groove 412. The first groove 411 and the second groove 412 are connected and communicate in the height direction H. The first groove 411 and the second groove 412 both extend along the length direction L. The cross-sectional shape of the first groove 411 in the vertical direction is a rectangle, and the cross-sectional shape of the second groove 412 in the vertical direction is a triangle. The apex angle of the second groove 412 faces away from the end of the insulating strip 4 away from the bottom plate 11.

[0035] In this embodiment, the groove 41 includes two connected and communicating first grooves 411 and second grooves 412, so that the depth of the groove 41 is greater, further extending the creepage path between the end of the first busbar 2 away from the bottom plate 11 and the end of the second busbar 3 away from the bottom plate 11, and reducing potential safety hazards. The first groove 411 refers to a rectangular cross-section groove continuously opened along the length direction L at the top of the insulating strip 4, which can be specifically realized by an injection molding process and is used to form an initial creepage isolation space. The second groove 412 refers to a trapezoidal cross-section groove extending further downward at the bottom of the first groove 411, which can be specifically formed by machining with a mold and is used to further extend the creepage path. It can be understood that in other embodiments, the cross-sectional shape of the first groove 411 in the vertical direction can also be trapezoidal, and the cross-sectional shape of the second groove 412 in the vertical direction can also be rectangular, triangular or arc-shaped.

[0036] In an embodiment of the present invention, the groove 41 includes a first groove 411, a second groove 412 and a third groove 413. The first groove 411, the second groove 412 and the third groove 413 extend along the length direction L, and the first groove 411, the second groove 412 and the third groove 413 are connected and communicated in the height direction H. The cross-sectional shape of the first groove 411 in the vertical direction is rectangular, the cross-sectional shape of the second groove 412 in the vertical direction is trapezoidal, and the cross-sectional shape of the third groove 413 in the vertical direction is arc-shaped.

[0037] In this embodiment, the groove 41 includes two connected and communicating first grooves 411, second grooves 412 and third grooves 413, so that the depth of the groove 41 is greater, and further extends the creepage path between the end of the first busbar 2 away from the bottom plate 11 and the end of the second busbar 3 away from the bottom plate 11, reducing potential safety hazards. A first groove 411 with a rectangular cross-section, a second groove 412 with a trapezoidal cross-section and a third groove 413 with an arc-shaped cross-section are sequentially arranged at the top of the insulating strip 4 to form a three-stage composite structure. When current passes through the busbar, the stepped groove 41 structure forms a tortuous current path on the surface of the insulating strip 4, preventing surface flashover by increasing the effective creepage distance. At the same time, the arc-shaped edge design of the third groove 413 can optimize the electric field distribution, making the electric stress evenly disperse along the smooth curved surface and avoiding field strength concentration at the corners.

[0038] In an embodiment of the present invention, the depth of the groove 41 in the height direction H is greater than or equal to 27.16 mm and less than or equal to 40.74 mm.

[0039] In this embodiment, the depth of the groove 41 in the height direction H refers to the vertical distance between the top surface of the insulating strip 4 and the bottom of the groove 41. The range of this vertical distance needs to ensure that sufficient creepage distance is formed when the insulating strip 4 bears voltage. The depth range of the groove 41 is greater than or equal to 27.16 mm and less than or equal to 40.74 mm, such as 27.16 mm, 30 mm, 35 mm, 40.74 mm, or any value within the above range. If the depth of the groove 41 is too small, the length of the creepage path is insufficient to withstand sufficient voltage, and breakdown or flashover is likely to occur. If the depth of the groove 41 is too deep, it will cause the groove depth to be too large, resulting in a decrease in the structural strength of the insulating strip 4. When inserting the plug, it is easy to deform, resulting in the failure of the insulating function of the insulating strip 4.

[0040] In an embodiment of the present invention, the ratio of the depth of the groove 41 in the height direction H to the height of the insulating strip 4 in the height direction H is greater than or equal to 0.16 and less than or equal to 0.24.

[0041] In this embodiment, the depth of the groove 41 refers to the maximum dimension in the direction perpendicular to the bottom plate 11 of the recessed structure extending along the length direction L opened at one end of the insulating strip 4 away from the bottom plate 11, which is used to extend the creepage path of the surface leakage current; the height of the insulating strip 4 refers to the total dimension of the insulating strip 4 in the direction perpendicular to the bottom plate 11, which is used to insulate and isolate the first busbar 2 and the second busbar 3. The ratio range of the depth of the groove 41 to the height of the insulating strip 4 is 0.16 to 0.24, such as 0.16, 0.2, 0.24, or any value within the above range, so that the groove 41 in the insulating strip 4 forms sufficient creepage clearance to withstand sufficient voltage and prevent breakdown or flashover, and at the same time, the insulating strip 4 retains sufficient support thickness to ensure the mechanical stability of the insulating strip 4 to withstand the busbar installation pressure and prevent the failure of the insulating function.

[0042] In an embodiment of the present invention, both the first busbar 2 and the second busbar 3 include integrally formed heads 21 and shoulders 22, and the position of the bottom of the groove 41 in the height direction H is higher than the shoulders 22 of the first busbar 2 and the shoulders 22 of the second busbar 3.

[0043] In this embodiment, the integrally formed head 21 and shoulder 22 refer to that the main structure of the busbar is formed into a seamless whole through continuous processing, which can be specifically realized by casting or stamping processes. This design avoids the contact resistance generated at the connection of the traditional split structure and improves the current-carrying capacity. Further, the position of the bottom of the groove 41 being higher than the shoulder 22 means that the lowest point of the groove 41 of the insulating strip 4 has a height difference in the vertical direction relative to the upper surface of the shoulder 22 of the first busbar 2 and the second busbar 3, so that the insulating strip 4 retains sufficient support thickness to ensure the mechanical stability of the insulating strip 4 to withstand the installation pressure of the busbar and prevent the insulation function from failing. The heads 21 of the first busbar 2 and the second busbar 3 are used for plugging and electrically connecting with the electrical connectors to supply power to each server node.

[0044] In an embodiment of the present invention, the ratio of the width of the shoulder 22 of the first busbar 2 in the width direction W to the vertical distance between the two side plates 12 is greater than or equal to 0.216 and less than or equal to 0.324.

[0045] In this embodiment, the shoulder 22 of the first busbar 2 refers to the laterally extending part where the first busbar 2 contacts the side plate 12. Its function is to carry a large current and increase the contact area between the busbar and the side plate 12 to improve the structural stability. It can be understood that the dimensions of the first busbar 2 are the same as those of the second busbar 3. When the size of the housing 1 is fixed, the ratio of the width of the shoulder 22 of the first busbar 2 to the width of the housing 1 is determined, that is, the ratio of the width of the shoulder 22 of the first busbar 2 to the vertical distance between the two side plates 12 is determined. Through conversion, the thickness of the insulating strip 4 can be obtained. Specifically, during the assembly process, the ratio range of the width of the shoulder 22 of the first busbar 2 to the width of the installation groove 13 is between 0.216 and 0.324, such as 0.216, 0.24, 0.28, 0.324 or any value within the above range. The width of the shoulder 22 of the first busbar 2 should not be too low, as too low a shoulder 22 is not sufficient for the first busbar 2 to carry a large current. The width of the shoulder 22 of the first busbar 2 should not be too high either, as too high a shoulder 22 will compress the insulation gap between the busbar and the side plate 12, thereby shortening the creepage path between the ends of the two busbars and easily causing breakdown or flashover phenomena, resulting in potential safety hazards.

[0046] In an embodiment of the present invention, the rack busbar 100 further includes two grounding bars 5. One grounding bar 5 is provided on one side plate 12 and is located near the notch of the installation groove 13. The rack busbar 100 further includes a plurality of gaskets 6. A part of the gaskets 6 are spaced and clamped between the first busbar 2 and one side plate 12, and the rest of the gaskets 6 are spaced and clamped between the second busbar 3 and the other side plate 12.

[0047] In this embodiment, the grounding strip 5 refers to a conductive component used to establish a reliable grounding path. Specifically, it can be implemented using a copper strip or a tinned copper bar. It is connected to the side plate 12 by mechanical fixing to form an electrical connection with the external grounding system, effectively eliminating the risk of leakage current accumulation. The two grounding strips 5 are symmetrically arranged on the outer edges of the two side plates 12 to form a dual grounding protection, which can quickly conduct abnormal charges into the ground. A creepage path can also be formed between the shoulder 22 of the first bus bar 2 or the shoulder 22 of the second bus bar 3 and the corresponding grounding strip 5 on one side.

[0048] The gasket 6 is an insulating support for filling the gap between the bus bar and the side plate 12 and preventing the connecting piece from deforming the housing 1 or the bus bar. Specifically, it can be realized by injection molding using silicone, rubber or polycarbonate materials. The multiple gaskets 6 are arranged at intervals to avoid the formation of a creepage path on the continuous contact surface and provide structural stability at the same time. The grounding strip 5 is arranged near the opening edge of the installation groove 13 of the side plate 12 to form the shortest connection path with the external grounding terminal. The gaskets 6 are distributed in a non - continuous manner in the contact area between the bus bar and the side plate 12. For example, one gasket is set at a certain interval, which can ensure the installation stability of the bus bar, and the length of the creepage path between the shoulder 22 of the first bus bar 2 or the shoulder 22 of the second bus bar 3 and the corresponding grounding strip 5 on one side can be adjusted through the gasket 6, avoiding the occurrence of surface flashover or breakdown phenomena and reducing potential safety hazards.

[0049] In the embodiment of the present invention, the thickness of the gasket 6 in the width direction W is greater than or equal to 3.2 mm and less than or equal to 4.8 mm.

[0050] In this embodiment, the thickness of the gasket 6 in the width direction W refers to the lateral dimension of the gasket 6 along the contact surface between the side plate 12 and the bus bar. The thickness range of the gasket 6 is greater than or equal to 3.2 mm and less than or equal to 4.8 mm. For example, 3.2 mm, 3.6 mm, 4.0 mm, 4.4 mm, 4.8 mm or any value within the above range. If the thickness of the gasket 6 is too large, it will occupy too much space in the installation groove 13, reducing the thickness of the first bus bar 2 or the second bus bar 3 or the insulating strip 4, making the electrical connector unable to carry a large current or affecting the width of the groove 41 opened on the insulating strip 4, thus shortening the creepage path and prone to the occurrence of surface flashover or breakdown phenomena. If the thickness of the gasket 6 is too small, the creepage path between the shoulder 22 of the first bus bar 2 or the shoulder 22 of the second bus bar 3 and the corresponding grounding strip 5 on one side will be short, prone to the occurrence of surface flashover or breakdown phenomena, generating potential safety hazards.

[0051] In the embodiment of the present invention, the ratio of the thickness of the gasket 6 in the width direction W to the vertical distance between the two side plates 12 is greater than or equal to 0.08 and less than or equal to 0.12.

[0052] In this embodiment, the ratio range of the thickness of the gasket 6 to the vertical distance between the two side plates 12 is greater than or equal to 0.08 and less than or equal to 0.12, such as 0.08, 0.1, 0.12 or any value within the above range. If the thickness ratio of the gasket 6 is too large, it will occupy too much space in the installation groove 13, reducing the thickness of the first bus bar 2, the second bus bar 3 or the insulating strip 4, making the electrical connector unable to carry a large current or affecting the width of the groove 41 formed on the insulating strip 4, thereby shortening the creepage path and prone to surface flashover or breakdown. If the thickness ratio of the gasket 6 is too small, it will result in a short creepage path between the shoulder 22 of the first bus bar 2 or the shoulder 22 of the second bus bar 3 and the corresponding grounding bar 5 on one side, making it prone to surface flashover or breakdown and posing a safety hazard.

[0053] The above description is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A frame bus, which is used to be electrically connected to a power supply and supply power to a server, is characterized in that The frame busbar includes: A housing having a length direction, a width direction, and a height direction. The housing includes a bottom plate and two side plates. The two side plates are connected to opposite sides of the bottom plate extending along the length direction, and the two side plates and the bottom plate enclose an installation groove; A first busbar disposed in the installation groove and extending along the length direction; A second busbar disposed in the installation groove and extending along the length direction; and An insulating strip clamped between the first busbar and the second busbar and extending along the length direction. One end of the insulating strip away from the bottom plate is provided with a groove extending along the length direction.

2. The rack bus bar according to claim 1, characterized in that, The cross-sectional shape of the groove in the vertical direction is a tapered shape.

3. The rack busbar according to claim 2, characterized in that, The groove includes a first groove, a second groove, and a third groove. The first groove, the second groove, and the third groove extend along the length direction. The first groove, the second groove, and the third groove are sequentially connected and communicated in the height direction. The cross-sectional shape of the first groove in the vertical direction is a rectangle, the cross-sectional shape of the second groove in the vertical direction is a trapezoid, and the cross-sectional shape of the third groove in the vertical direction is an arc.

4. The rack busbar according to claim 1, wherein The depth of the groove in the height direction is greater than or equal to 27.16 mm and less than or equal to 40.74 mm.

5. The rack busbar according to claim 1, wherein, The ratio between the depth of the groove in the height direction and the height of the insulating strip in the height direction is greater than or equal to 0.16 and less than or equal to 0.

24.

6. The rack busbar according to claim 1, wherein Both the first busbar and the second busbar include integrally formed heads and shoulders. The position of the bottom of the groove in the height direction is higher than the shoulders of the first busbar and the shoulders of the second busbar.

7. The rack busbar according to claim 6, wherein The ratio between the width of the shoulder of the first busbar in the width direction and the perpendicular distance between the two side plates is greater than or equal to 0.216 and less than or equal to 0.

324.

8. The rack busbar according to any one of claims 1 to 7, characterized in that, The frame busbar further includes two grounding bars. One grounding bar is disposed on one side plate and is located near the notch of the installation groove. The frame busbar further includes a plurality of gaskets. Some of the gaskets are spaced and clamped between the first busbar and one side plate, and the rest of the gaskets are spaced and clamped between the second busbar and the other side plate.

9. The rack busbar according to claim 8, wherein The thickness of the gasket in the width direction is greater than or equal to 3.2 mm and less than or equal to 4.8 mm.

10. The rack busbar according to claim 8, wherein, The ratio between the thickness of the gasket in the width direction and the perpendicular distance between the two side plates is greater than or equal to 0.08 and less than or equal to 0.12.

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