A sealing structure and related wiring structure and electrical equipment

Abstract

The present invention discloses a sealing structure and related wiring structure and electrical equipment, wherein the sealing structure is used for interference fit with the side of a first object with a polygonal cross-section, and comprises: a first rigid part, a second rigid part and a third rigid part. The first rigid part and the second rigid part are both screwed to the first object so that each side sealing surface is tightly matched with the corresponding side of the first object, and each extension surface is roughly located in the same plane as the corresponding side of the first object; the third rigid part is screwed to the other two rigid parts so that its side sealing surface is tightly matched with the corresponding side of the first object. The sealing structure of the present invention is suitable for rigid sealing of busbar wiring structures, so there is no problem of melting, aging or loosening due to heat, and is further suitable for realizing protective wiring of electrical modules and partition protection of electrical equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and more specifically, to a sealing structure and related wiring structure and electrical equipment. Background Art

[0002] During the use of electrical equipment, the life of the electrical modules inside it is often reduced due to the introduction of moisture and dust. The introduction of moisture and dust often occurs when the user opens the cabinet door of the electrical equipment to perform wiring operations on the electrical module, or when the fan draws in outside air to dissipate heat from the electrical module.

[0003] In view of this, the prior art proposes a partition protection scheme, that is, to form areas with different protection levels by setting partitions in electrical equipment, and to place modules or devices with high protection requirements in high protection level areas, and modules or devices with low protection requirements in low protection level areas. In this way, for example, by placing devices or modules that need to interact with users, such as busbars, in low protection level areas, it is possible to avoid the introduction of water vapor and dust due to interaction and the impact on important modules or devices.

[0004] However, even so, modules or devices located in different protection level areas may still need to establish electrical connections through wiring structures. Especially in high current environments, busbar structures such as copper busbars are usually required for wiring. Since the busbar must pass through the partition and extend into different protection level areas, and based on factors such as assembly convenience, compatibility, and manufacturing accuracy, the busbar and the partition can only be matched with clearance, so the gap formed by the two needs to be further sealed.

[0005] In actual implementation, the existing technology usually uses two methods for sealing, such as filling sealant and filling foam. However, the heat generated by the busbar when a large current passes through it often causes the sealant to melt and the foam to age. In addition, the foam may fall off when the gap is large. In other words, the above defects all show that the existing sealing method is difficult to effectively seal the busbar wiring structure, making it impossible for electrical equipment to truly achieve partition protection. Summary of the invention

[0006] The object of the present invention is to provide a sealing structure and related wiring structure and electrical equipment, wherein the sealing structure is suitable for effectively and stably sealing the busbar wiring structure, without problems such as melting due to heat, aging or loosening, and is further suitable for realizing protective wiring of electrical modules and zoned protection of electrical equipment.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention provides a technical solution 1: a sealing structure for interference fit with the side surface of a first object having a polygonal cross-section and extending perpendicular to the polygonal cross-section; the first object at least has a first side surface, a third side surface and a second side surface intersecting in sequence, the first side surface and the third side surface form a first angle, and the second side surface and the third side surface form a second angle; the sealing structure comprises: a first rigid member, which has a first side sealing surface and a first extension surface forming a third angle with each other, the third angle being complementary to the first angle; the first rigid member is suitable for being screwed with the first object so that the first side sealing surface is tightly fitted in The first side surface, and the first extension surface and the third side surface are roughly located in the same plane; a second rigid member, which has a second side sealing surface and a second extension surface forming a fourth angle with each other, and the fourth angle is complementary to the second angle; the second rigid member is suitable for being threaded with the first object so that the second side sealing surface is tightly fitted with the second side surface, and the second extension surface and the third side surface are roughly located in the same plane; a third rigid member, which has a third side sealing surface; the third rigid member is suitable for being threaded with the first rigid member and the second rigid member so that the third side sealing surface is tightly fitted with the first extension surface, the second extension surface and the third side surface.

[0008] In the technical solution 1, a threaded tight fit relationship is established between a plurality of rigid parts and the first object, so that the corresponding side sealing surface of each rigid part can be tightly matched with the side surface of the first object. In other words, the sealing structure establishes an interference fit relationship with the first object through a rigid surface-to-surface tight fit, so it is suitable for further sealing the shaft hole structure formed with the first object as the axis based on it, and thanks to the stable characteristics of the rigid parts and the threaded connection method, there are no defects such as melting due to heat, aging or loosening, so a stable sealing effect can be guaranteed.

[0009] In addition, more importantly, the sealing structure of Technical Solution 1 is particularly suitable for application environments where flat rectangular extension structures such as busbars are to be sealed. Specifically, since the cross-section of the busbar is a relatively obvious flat rectangular cross-section, it is difficult to perform a tightening operation on the short side surface, and it is also difficult to establish a tight fit with the short side surface. In view of this dilemma, those skilled in the art generally do not consider using a rigid sealing method to seal the busbar, and precisely because the busbar is not a circular shaft structure, it is difficult to find a suitable flexible seal to perform an interference fit with the busbar. This is also the reason why the prior art can only use relatively unstable sealing methods such as glue pouring or filling to seal the busbar.

[0010] In technical solution one, an extension surface that forms an angle with the side sealing surface is formed on the first rigid part and the second rigid part, and the angle between the two is configured to be complementary to the angle between the two intersecting side surfaces, so that after the side sealing surface of the first rigid part and the second rigid part are tightly matched with one of the side surfaces, the extension surface can not only provide an operating space for the screw connection of the third rigid part with the first rigid part or the second rigid part, but also is roughly located in the same plane as the other side surface of the first object, so that the third rigid part can be screwed with the first rigid part and the second rigid part so that its side sealing surface can be tightly matched with the other side surface, thereby being suitable for realizing an overall interference fit between the sealing structure and the first object.

[0011] In other words, the sealing structure of technical solution one extends the third side of the first object through the extension surface after the first rigid part and the second rigid part are tightly fitted with the first side and the second side of the first object, so that it is suitable to realize the overall interference fit of the sealing structure and the first object through the screw connection between the third rigid part and the other two rigid parts, which is particularly suitable for sealing flat rectangular extension structures such as busbars.

[0012] It goes without saying that the sealing structure of Technical Solution 1 is not only applicable to quadrilateral extension structures such as busbars, but can be used for other polygonal extension structures, and is suitable for effective rigid sealing of polygonal extension structures with sides of limited size.

[0013] Based on technical solution one, there is also technical solution two: the first object has a quadrilateral cross-section, and it also has a fourth side surface intersecting with the first side surface and the second side surface; the first rigid component and the second rigid component also have a third extension surface and a fourth extension surface, respectively, and when the first rigid component and the second rigid component are respectively screwed to the first object, the third extension surface, the fourth extension surface and the fourth side surface are all roughly located in the same plane; the sealing structure also includes: a fourth rigid component, which has a fourth side sealing surface; the fourth rigid component is suitable for being screwed to the first rigid component and the second rigid component and making the fourth side sealing surface tightly fit with the third extension surface, the fourth extension surface and the fourth side surface.

[0014] In technical solution two, the first object is further a quadrilateral extension structure having a fourth side surface, and the sealing structure also correspondingly includes a fourth rigid part, which is arranged opposite to the third rigid part and has a fourth side sealing surface, so that the sealing structure can fit tightly with each side surface of the first object.

[0015] Based on technical solution two, there is also technical solution three: the first object has a rectangular cross-section; the first side surface, the third side surface, the second side surface and the fourth side surface are connected end to end in sequence, and the first side surface and the second side surface are parallel and opposite and are both long side surfaces of the first object, and the third side surface and the fourth side surface are parallel and opposite and are both short side surfaces of the first object; the first side sealing surface forms an angle of 90° with the first extension surface and the third extension surface, the first extension surface and the third extension surface are parallel and the distance between the two is equal to or slightly shorter than the distance between the two short side surfaces of the first object; the second side sealing surface forms an angle of 90° with the second extension surface and the fourth extension surface, the second extension surface and the fourth extension surface are parallel and the distance between the two is equal to or slightly shorter than the distance between the two short side surfaces of the first object.

[0016] In technical solution three, the first object is further a rectangular extension structure. By configuring the angles between the side sealing surfaces and the extension surfaces of the first rigid part and the second rigid part to be 90°, and configuring the two extension surfaces of the same rigid part to be parallel and with a spacing equal to or slightly shorter than the spacing between the two short side surfaces of the first object, it is ensured that each extension surface can roughly coincide with the corresponding side surface, thereby ensuring that each side sealing surface of the sealing structure can closely fit with each side surface of the first object.

[0017] The reason for this is that the first rigid part and the second rigid part inevitably have errors during manufacturing, so it is difficult to ensure that the spacing between the two extended surfaces is exactly equal to the spacing between the two short side surfaces of the first object. However, it can be configured so that the spacing tolerance between the two is a negative difference, so that the manufacturing error can be overcome by the tensile deformation characteristics of the corresponding rigid part in the threaded tight fit, and it can still ensure that the third side sealing surface or the fourth side sealing surface can be tightly matched with the corresponding extended surface and the corresponding side surface of the first object, while avoiding the formation of a gap when the spacing tolerance between the two is a positive difference.

[0018] Based on technical solution three, there is also technical solution four: the sealing structure is also used to perform end face sealing on the gap shaft hole structure formed by the first object as the axis and the second object; the second object is provided with a through opening for the first object to pass through, and has a first end face located at one end of the through opening and perpendicular to the extension direction of the through opening; each rigid part also has an end sealing surface perpendicular to its side sealing surfaces; the first rigid part and the second rigid part are also suitable for being threaded with the second object so that each end sealing surface is tightly matched with the first end face and realizes the end face sealing.

[0019] Technical Solution 4 specifies that the specific sealing method of the axial hole structure formed by the first object and the second object using the sealing structure is end face sealing, which is achieved by configuring each rigid part with an end sealing surface and making each rigid part, after establishing a threaded relationship with the first object and the second object, each end sealing surface is tightly matched with the first end face of the second object.

[0020] Based on technical solution four, there is also technical solution five: the first object extends along the third direction, the short side of its rectangular cross-section is parallel to the first direction, and the long side of the rectangular cross-section is parallel to the second direction; the first rigid member and the second rigid member are the same, and are both configured as metal sheet metal parts including a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece that are connected to each other as a whole; the first connecting piece and the second connecting piece are respectively perpendicular to the first direction and the third direction and have the same length along the second direction; the third connecting piece and the fourth connecting piece are respectively located at the two ends of the first connecting piece and the second connecting piece along the second direction and are both perpendicular to the second direction and arranged oppositely along the second direction; the first side sealing surface, the end sealing surface, the first extension surface, and the third extension surface are respectively defined on the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece of the first rigid member; The second side sealing surface, the end sealing surface, the second extension surface and the fourth extension surface are defined on the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece of the two rigid parts respectively; the third rigid part and the fourth rigid part are the same, and are both configured as metal sheet metal parts including a fifth connecting piece and a sixth connecting piece connected to each other as a whole; the fifth connecting piece and the sixth connecting piece are respectively perpendicular to the second direction and the third direction and have the same length along the first direction; the third side sealing surface and the end sealing surface are defined on the fifth connecting piece and the sixth connecting piece of the third rigid part respectively; the fourth side sealing surface and the end sealing surface are defined on the fifth connecting piece and the sixth connecting piece of the fourth rigid part respectively; wherein, the length of the first connecting piece along the second direction is equal to or slightly shorter than the long side of the rectangular cross-section, and the length of the fifth connecting piece along the first direction is greater than the short side of the rectangular cross-section.

[0021] Technical Solution Five stipulates that each rigid part is a metal sheet metal part comprising a number of connecting plates connected to each other as a whole, with good flatness, moderate plasticity and good stability; in addition, Technical Solution Five also defines the position and length of each connecting plate so that each rigid part accurately defines the aforementioned side sealing surfaces, extension surfaces and end sealing surfaces.

[0022] Based on technical solution five, there is also technical solution six: a chamfered structure is formed at the connection between the first connecting piece and the third connecting piece or the fourth connecting piece, or a chamfered structure is formed at the intersection of the side surfaces of the first object; the sealing structure also includes: a filling seal, which fills the gap formed by the first object and the corresponding rigid part.

[0023] Taking into account that the metal sheet metal and the first object may form chamfers and thus gaps during the forming process, technical solution six is ​​correspondingly provided with a filling seal to fill these smaller gaps and achieve a more complete sealing effect.

[0024] Based on technical solution five, there is also technical solution seven: the first object is provided with a first connecting hole extending along the first direction, and the second object is provided with a plurality of second connecting holes extending along the third direction; the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are respectively provided with a third connecting hole, a fourth connecting hole, a fifth connecting hole and a sixth connecting hole; the third connecting hole and the fourth connecting hole extend along the first direction and the third direction respectively, and the fifth connecting hole and the sixth connecting hole both extend along the second direction; the fifth connecting piece is provided with a seventh connecting hole, and the seventh connecting hole extends along the second direction; wherein the first connecting hole corresponds to the third connecting hole, each of the second connecting holes corresponds to the fourth connecting hole, and the fifth connecting hole and the sixth connecting hole both correspond to the seventh connecting hole; the sealing structure also includes: a plurality of fastening components, which are composed of screws and nuts; each fastening component respectively screws each connecting piece, the first object and the second object through the corresponding connecting hole, and makes each side sealing surface and each side surface of the first object, and each end sealing surface and the first end surface of the second object tightly fit.

[0025] In technical solution seven, corresponding connecting holes are provided on each connecting plate, and each connecting plate, the first object and the second object are correspondingly screwed together through a fastening assembly composed of a screw and a nut. The connecting structure is simple and has high stability.

[0026] It is worth noting that the seventh technical solution does not limit the sixth connecting piece to be provided with a corresponding connecting hole for screwing with the second object. This is because the third rigid member or the fourth rigid member can be slightly moved toward the first end face when the fifth connecting piece is screwed with the third connecting piece or the fourth connecting piece, so that the end sealing surface defined by the sixth connecting piece is slightly closer to the end sealing surface defined by the second connecting piece. In this way, when the end sealing surface defined by the second connecting piece is tightly matched with the first end face through the fastening assembly, it is ensured that the end sealing surface defined by the sixth connecting piece is also inevitably tightly matched with the first end face.

[0027] To achieve the above-mentioned purpose, the second aspect of the present invention provides Technical Solution Eight: a wiring structure for wiring an electrical module; it includes: a sealing structure, which is as described in Technical Solution Four, Technical Solution Five, Technical Solution Six or Technical Solution Seven; a partition, which constitutes the second object and is provided with the through-hole; the partition also defines a first protection zone and a second protection zone respectively located on both sides thereof; the protection level in the first protection zone is higher than that in the second protection zone and the electrical module is located in the first protection zone; a busbar, which constitutes the first object and passes through the through-hole in a direction perpendicular to the partition; one end of the busbar extends to the first protection zone and is electrically connected to the electrical module, and the other end extends to the second protection zone to lead the electrical module to the second protection zone; wherein the first end face is the surface of the partition facing the second protection zone, and each rigid member is located in the second protection zone.

[0028] The wiring structure of Technical Solution 8 adopts the aforementioned sealing structure, thus inheriting all its advantages and being able to realize protective wiring of the electrical module.

[0029] Based on technical solution eight, there is also technical solution nine: the partition includes: a first plate member, which is a metal member; a second plate member, which is an insulating member and is fixed to the first plate member and is approximately located in the same plane; the second plate member is also provided with the through opening.

[0030] Technical Solution Nine configures the partition to include metal plates and insulating plates fixed to each other, thereby ensuring the stable connection of the wiring structure in the electrical equipment and preventing the current from being conducted to other locations of the electrical equipment through the sealing structure and the partition when the busbar is energized, causing the risk of electric shock, thereby meeting safety regulations.

[0031] To achieve the above-mentioned purpose, the third aspect of the present invention provides technical solution ten: an electrical device, comprising: a cabinet; a wiring structure, which is as described in technical solution eight or technical solution nine, and is fixedly arranged in the cabinet; the partition defines the first protection zone and the second protection zone in the cabinet; an electrical module, which is fixedly arranged in the cabinet and located in the first protection zone; the electrical module is electrically connected to one end of the busbar to lead to the second protection zone through the busbar.

[0032] The electrical equipment of Technical Solution 10 adopts the aforementioned wiring structure, thus inheriting all its advantages, and can realize partition protection, which is beneficial to prolonging the service life of the electrical modules or devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1a is a schematic diagram of the principle of the sealing structure of Example 1 of the present invention, wherein the first object is a triangular extension structure;

[0035] Figure 1b is a schematic diagram of the principle of the sealing structure of Example 2 of the present invention, wherein the first object is a quadrilateral extension structure;

[0036] Figure 2 is a stereoscopic diagram of the sealing structure of Example 3 of the present invention when it cooperates with the first object;

[0037] Figure 3 is another stereoscopic diagram of the sealing structure of Example 3 of the present invention when it cooperates with the first object;

[0038] Figure 4 is a cross-sectional view of the sealing structure of Embodiment 3 of the present invention when it cooperates with the first object and the second object;

[0039] Figure 5 is another cross-sectional view of the sealing structure of Embodiment 3 of the present invention when it cooperates with the first object and the second object;

[0040] Figure 6 is a three-dimensional diagram of the first metal sheet metal component of the sealing structure of Example 3 of the present invention;

[0041] Figure 7 is a three-dimensional diagram of the second metal sheet metal component of the sealing structure of Example 3 of the present invention;

[0042] Figure 8 is a stereogram of the wiring structure of embodiment 3 of the present invention;

[0043] Fig. 9 It is another stereoscopic diagram of the wiring structure of embodiment 3 of the present invention.

[0044] Fig.10 is a three-dimensional diagram of an electrical device according to Embodiment 3 of the present invention;

[0045] Fig.11 is a three-dimensional diagram of the electrical device in Embodiment 3 of the present invention with the frame hidden;

[0046] Main reference numerals:

[0047] A first object (busbar, busbar busbar) 10, a first side surface 10A, a second side surface 10B, a third side surface 10C, and a fourth side surface 10D;

[0048] A second object (partition plate) 20, a first end surface 20A, a first plate 21, and a second plate 22;

[0049] A first rigid member 31, a first side sealing surface 31A, a first end sealing surface 31B, a first extension surface 31C, and a third extension surface 31D;

[0050] A second rigid member 32, a second side sealing surface 32A, a second end sealing surface 32B, a second extension surface 32C, and a fourth extension surface 32D;

[0051] A third rigid member 33, a third side sealing surface 33A, and a third end sealing surface 33B;

[0052] a fourth rigid member 34, a fourth side sealing surface 34A, and a fourth end sealing surface 34B;

[0053] A first metal sheet 35, a first connecting piece 351, a second connecting piece 352, a third connecting piece 353, a fourth connecting piece 354, a third connecting hole 3511, a fourth connecting hole 3521, a fifth connecting hole 3531, and a sixth connecting hole 3541;

[0054] A second metal sheet 36, a fifth connecting piece 361, a sixth connecting piece 362, and a seventh connecting hole 3611;

[0055] The drainage busbar 40 , the connection busbar 50 , the electrical module 60 , and the frame 70 . DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0058] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0059] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, and fixed connection through other devices or elements.

[0060] An embodiment of the present invention provides a sealing structure, which is used for interference fit with the side of a first object constructed as a polygonal extension structure, and is further suitable for sealing a gap shaft hole structure formed by taking the first object as the axis and forming a corresponding hole with another second object.

[0061] It should be noted that the polygonal extension structure referred to in the present invention refers to an object having a polygonal cross-section and extending in a direction perpendicular to the polygonal cross-section. Therefore, generally speaking, the polygonal extension structure refers to a prism, such as a triangular prism, a quadrangular prism, etc. Moreover, the side surfaces of the polygonal extension structure are a plurality of planes parallel to its extension direction and intersecting each other end to end. In addition, due to various considerations during actual manufacturing, the intersections of the side surfaces of the polygonal extension structure may form chamfers, transition arc surfaces, etc., which also belong to the polygonal extension structure referred to in the present invention.

[0062] It goes without saying that the busbar of the following embodiment 3 of the present invention, because it has a rectangular cross-section and extends in a direction perpendicular to the rectangular cross-section, although the short side dimension of the rectangular cross-section is so different from the long side dimension that it is usually not considered as a prism in the mathematical sense, it still constitutes a polygonal extension structure as referred to in the present invention.

[0063] Furthermore, the gap shaft hole structure referred to in the present invention refers to a shaft hole structure for gap fitting. In the present invention, the shaft hole structure should be interpreted in a broad sense, that is, the shaft hole structure should not be limited to the structure formed by the fitting of round shafts and round shafts, and the structure formed by the fitting of the polygonal structure of the present invention and the hole of the corresponding shape should also be included in the interpretation scope of the shaft hole structure.

[0064] Next, refer to Figure 1a and Figure 1b , which takes the first object being a triangular extension structure and a quadrilateral extension structure as examples, respectively, to illustrate the situation where the sealing structure of an embodiment of the present invention is applied to a polygonal extension structure.

[0065] Example 1

[0066] Reference first Figure 1a , which shows the sealing structure of Example 1 of the present invention. Accordingly, the first object 10 has a first side surface 10A, a third side surface 10C and a second side surface 10B intersecting in sequence, the first side surface 10A and the third side surface 10C form a first angle, and the second side surface 10B and the third side surface 10C form a second angle.

[0067] The sealing structure includes a first rigid member 31 , a second rigid member 32 , a third rigid member 33 and a plurality of fastening components.

[0068] The first rigid member 31 has a first side sealing surface 31A and a first extension surface 31C that form a third angle with each other, and the third angle is complementary to the first angle. The first rigid member 31 is suitable for being screwed to the first object 10 so that the first side sealing surface 31A is tightly matched with the first side surface 10A, and after being screwed, the first extension surface 31C and the third side surface 10C are substantially located in the same plane.

[0069] The second rigid member 32 has a second side sealing surface 32A and a second extension surface 32C that form a fourth angle with each other, and the fourth angle is complementary to the second angle. The second rigid member 32 is suitable for being screwed to the first object 10 so that the second side sealing surface 32A is tightly matched with the second side surface 10B, and after being screwed, the second extension surface 32C and the third side surface 10C are substantially located in the same plane.

[0070] The third rigid member 33 has a third side sealing surface 33A, which is suitable for being threadedly connected to the first rigid member 31 and the second rigid member 32 and making the third side sealing surface 33A tightly fit with the first extension surface 31C, the second extension surface 32C and the third side surface 10C.

[0071] The fastening assembly includes a screw, a threaded rod and a nut. The screw is used to screw the first rigid member 31 or the second rigid member 32 directly to the first object 10, and the screw and the nut cooperate with each other to screw the third rigid member 33 to the first rigid member 31 and the second rigid member 32 respectively.

[0072] It is understandable that, in order to fit closely with the side surfaces and be located in the same plane, the side sealing surfaces and the extension surfaces are also constructed as planes. In addition, it is worth noting that the term "approximately located in the same plane" as used in the present invention includes the following two situations: one is that in an ideal situation, the two planes coincide; the other is that for the sake of manufacturing accuracy, the two planes are only parallel to each other but separated by a small distance.

[0073] It can be seen that the sealing structure of the embodiment of the present invention establishes a threaded tight fit relationship with the first object 10 through multiple rigid parts, so that the corresponding side sealing surface of each rigid part can be tightly matched with the side surface of the first object 10. In other words, the sealing structure establishes an interference fit relationship with the first object 10 through a rigid surface-to-surface tight fit, so it is suitable for further sealing the shaft hole structure formed with the first object 10 as the axis, and thanks to the stable characteristics of the rigid parts and the threaded connection method, there are no defects such as melting due to heat, aging or loosening, so a stable sealing effect can be guaranteed.

[0074] In addition, more importantly, the sealing structure of the embodiment of the present invention has an extension surface formed on the first rigid part 31 and the second rigid part 32, which is at an angle to the side sealing surface, and the angle between the two is configured to be complementary to the angle between the two intersecting side surfaces, so that after the side sealing surface of the first rigid part 31 and the second rigid part 32 is tightly fitted with one of the side surfaces, the extension surface can not only provide an operating space for the screw connection of the third rigid part 33 with the first rigid part 31 or the second rigid part 32, but also is roughly located in the same plane as the other side surface of the first object 10, so that the third rigid part 33 can be screwed with the first rigid part 31 and the second rigid part 32 so that its side sealing surface can be tightly fitted with the other side surface, thereby being suitable for achieving an overall interference fit between the sealing structure and the first object 10.

[0075] In other words, the sealing structure extends the third side 10C of the first object 10 through the extension surface after the first rigid part 31 and the second rigid part 32 are tightly fitted with the first side 10A and the second side 10B of the first object 10, so that it is suitable for realizing the overall interference fit between the sealing structure and the first object 10 through the screw connection between the third rigid part 33 and the other two rigid parts. This is particularly suitable for interference fit with and further sealing the polygonal extension structure when the structure has a side with limited size.

[0076] Example 2

[0077] Reference Figure 1b The sealing structure of Example 2 of the present invention is expanded on the basis of Example 1, so that it is suitable for a quadrilateral extension structure and can fit tightly with each side of the quadrilateral extension structure.

[0078] It can be seen that, compared with Example 1, the first object 10 corresponding to Example 2 has a quadrilateral cross-section, and further has a fourth side surface 10D intersecting with both the first side surface 10A and the second side surface 10B. In other words, the first side surface 10A, the third side surface 10C, the second side surface 10B and the fourth side surface 10D are connected end to end in sequence.

[0079] In this embodiment, the quadrilateral cross section of the first object 10 is configured as a rectangular cross section with a long side much longer than a short side, the first side surface 10A and the second side surface 10B are parallel and opposite to each other and are both long side surfaces of the first object 10, the third side surface 10C and the fourth side surface 10D are parallel and opposite to each other and are both short side surfaces of the first object 10, and each side surface forms a 90° angle with each other. It can be understood that in other embodiments, the cross section of the quadrilateral extension structure can also be other quadrilaterals.

[0080] Specifically, the sealing structure of this embodiment is further expanded on the basis of Embodiment 1 as follows.

[0081] The first rigid member 31 and the second rigid member 32 also have a third extension surface 31D and a fourth extension surface 32D, respectively. The first side sealing surface 31A forms a 90° angle with the first extension surface 31C and the third extension surface 31D, the first extension surface 31C and the third extension surface 31D are parallel, and the distance between the two is equal to or slightly shorter than the distance between the two short side surfaces of the first object 10. Similarly, the second side sealing surface 32A forms a 90° angle with the second extension surface 32C and the fourth extension surface 32D, the second extension surface 32C and the fourth extension surface 32D are parallel, and the distance between the two is equal to or slightly shorter than the distance between the two short side surfaces of the first object 10.

[0082] By the above configuration, when the first rigid member 31 and the second rigid member 32 are respectively screwed to the first object 10, the third extension surface 31D, the fourth extension surface 32D and the fourth side surface 10D can be substantially located in the same plane. In this embodiment, since the first object 10 has opposite side surfaces (the first side surface 10A and the second side surface 10B), the screws of the fastening assembly are replaced with screws and nuts, and the first rigid member 31, the first object 10 and the second rigid member 32 can be connected in sequence, so that there is no need to open a threaded hole in the first object 10.

[0083] Furthermore, the sealing structure further comprises a fourth rigid member 34 having a fourth side sealing surface 34A. The fourth rigid member 34 is suitable for being threadedly connected to the first rigid member 31 and the second rigid member 32 so that the fourth side sealing surface 34A is tightly matched with the third extension surface 31D, the fourth extension surface 32D and the fourth side surface 10D.

[0084] As mentioned above, there are inevitably errors in the manufacturing of the first rigid part 31 and the second rigid part 32, so it is difficult to ensure that the spacing between the two extension surfaces on the same rigid part is exactly equal to the spacing between the two short side surfaces of the first object 10. However, it can be configured so that the spacing tolerance between the two is a negative difference, so that the manufacturing error can be overcome by the tensile deformation characteristics of the corresponding rigid parts in the threaded tight fit, and it can still ensure that the third side sealing surface 33A or the fourth side sealing surface 34A can be tightly matched with the corresponding extension surface and the corresponding side surface of the first object 10, while avoiding the formation of a gap when the spacing tolerance between the two is a positive difference.

[0085] Example 3

[0086] Embodiment 3 of the present invention provides a more specific sealing structure, which is based on the sealing structure of embodiment 2, and on the basis of being able to perform interference fit with the side of the first object 10, is further expanded to perform end face sealing on the gap shaft hole structure formed by taking the first object 10 as the axis and the second object 20 as the hole, so that the sealing structure of this embodiment has a complete sealing function.

[0087] Reference Figure 2-7 , the following is based on Figure 2 The directions shown are used as a reference to describe the sealing structure of this embodiment.

[0088] The first object 10 is configured as the busbar 10 described above, which extends along the third direction, and the short side of its rectangular cross section is parallel to the first direction, and the long side of the rectangular cross section is parallel to the second direction. In addition, the first object 10 is also provided with a first connection hole (not shown in the figure) extending and penetrating along the first direction. The second object 20 is configured as the partition 20 described above, which is provided with a through hole for the first object 10 to pass through, and has a first end face 20A located at one end of the through hole and perpendicular to the extension direction of the through hole. In this embodiment, the first end face 20A is the second object 20 at Figure 4-5 In addition, the second object 20 is also provided with a plurality of second connection holes (not shown in the figure) extending and penetrating along the third direction.

[0089] The first rigid member 31, the second rigid member 32, the third rigid member 33 and the fourth rigid member 34 respectively have a first end sealing surface 31B, a second end sealing surface 32B, a third end sealing surface 33B and a fourth end sealing surface 34B perpendicular to their respective side sealing surfaces. The first rigid member 31 and the second rigid member 32 are also suitable for being screwed to the second object 20 so that each end sealing surface is tightly matched with the first end surface 20A and the end surface sealing is achieved.

[0090] Next, the structure of each rigid component is introduced in detail.

[0091] Reference first Figure 6 The first rigid member 31 and the second rigid member 32 are the same and are both configured as a first metal sheet metal member 35 including a first connecting piece 351, a second connecting piece 352, a third connecting piece 353 and a fourth connecting piece 354 which are integrally connected to each other.

[0092] The first connecting piece 351 and the second connecting piece 352 are respectively perpendicular to the first direction and the third direction and the lengths of the two along the second direction are the same. Further, the length of the first connecting piece 351 along the second direction is equal to or slightly shorter than the long side of the rectangular cross section. The third connecting piece 353 and the fourth connecting piece 354 are respectively located at the two ends of the first connecting piece 351 and the second connecting piece 352 along the second direction and are both perpendicular to the second direction and arranged opposite to each other along the second direction.

[0093] The first side sealing surface 31A, the first end sealing surface 31B, the first extension surface 31C, and the third extension surface 31D are defined on the first connecting piece 351, the second connecting piece 352, the third connecting piece 353, and the fourth connecting piece 354 of the first rigid member 31, respectively. The second side sealing surface 32A, the second end sealing surface 32B, the second extension surface 32C, and the fourth extension surface 32D are defined on the first connecting piece 351, the second connecting piece 352, the third connecting piece 353, and the fourth connecting piece 354 of the second rigid member 32, respectively.

[0094] In addition, the first connecting piece 351, the second connecting piece 352, the third connecting piece 353 and the fourth connecting piece 354 are respectively provided with a third connecting hole 3511, a fourth connecting hole 3521, a fifth connecting hole 3531 and a sixth connecting hole 3541. The third connecting hole 3511 and the fourth connecting hole 3521 extend along the first direction and the third direction respectively, and the fifth connecting hole 3531 and the sixth connecting hole 3541 extend along the second direction. The first connecting hole corresponds to the third connecting hole 3511, and each of the second connecting holes corresponds to the fourth connecting hole 3521.

[0095] Then refer to Figure 7 The third rigid member 33 and the fourth rigid member 34 are the same and are both configured as a second metal sheet member 36 including a fifth connecting piece 361 and a sixth connecting piece 362 connected to each other as a whole. The fifth connecting piece 361 and the sixth connecting piece 362 are respectively perpendicular to the second direction and the third direction and have the same length along the first direction. Further, the length of the fifth connecting piece 361 along the first direction is greater than the short side of the rectangular cross section.

[0096] The third side sealing surface 33A and the third end sealing surface 33B are defined on the fifth connecting piece 361 and the sixth connecting piece 362 of the third rigid member 33. The fourth side sealing surface 34A and the fourth end sealing surface 34B are defined on the fifth connecting piece 361 and the sixth connecting piece 362 of the fourth rigid member 34.

[0097] In addition, the fifth connecting piece 361 is provided with a seventh connecting hole 3611 extending therethrough, and the seventh connecting hole 3611 extends along the second direction. The fifth connecting hole 3531 and the sixth connecting hole 3541 both correspond to the seventh connecting hole 3611 .

[0098] It can be seen that each rigid part is a metal sheet metal part including a plurality of connecting pieces connected to each other as a whole, and has good flatness, moderate plasticity, and good stability. In addition, in this embodiment, the fastening assembly is composed of a screw and a nut, and each connecting piece, the first object 10, and the second object 20 are screwed together through corresponding connecting holes, and each side sealing surface is tightly matched with each side surface of the first object 10, and each end sealing surface is tightly matched with the first end surface 20A of the second object 20, so that the connection structure is simple and the stability is high.

[0099] It is worth noting that the sixth connecting piece 362 in this embodiment is not provided with a corresponding connecting hole for screwing with the second object 20. This is because the third rigid member 33 or the fourth rigid member 34 can be slightly moved toward the first end face 20A when the fifth connecting piece 361 is screwed with the third connecting piece 353 or the fourth connecting piece 354, so that the end sealing surface defined by the sixth connecting piece 362 is slightly closer to the end sealing surface defined by the second connecting piece 352. In this way, when the end sealing surface defined by the second connecting piece 352 is tightly matched with the first end face 20A through the fastening assembly, it is ensured that the end sealing surface defined by the sixth connecting piece 362 is also inevitably tightly matched with the first end face 20A. Of course, it is also feasible to also provide a connecting hole on the sixth connecting piece 362 of the third rigid member 33 and the fourth rigid member 34, and screw it with the second object 20 through the fastening assembly.

[0100] Preferably, the connection between the first connecting piece 351 of the first rigid part 31 and the second rigid part 32 and the third connecting piece 353 and the fourth connecting piece 354 of the present embodiment all form a chamfered structure. Therefore, the sealing structure also includes a filling seal configured as foam (not shown in the figure), which is filled in the gap X formed by the first object 10 and the corresponding rigid part, and the sealing effect is more perfect. It goes without saying that, as mentioned above, if the intersection of each side surface of the first object 10 also forms a chamfered structure, the corresponding gap can also be filled by the filling seal.

[0101] Reference Figure 8-9Embodiment 3 of the present invention further provides a wiring structure based on the above-mentioned sealing structure, which is used for wiring electrical modules in electrical equipment.

[0102] The wiring structure includes a partition 20, three busbars 10 and three sealing structures. The partition 20 and the busbars 10 constitute the second object and the first object respectively.

[0103] The partition 20 is provided with three through openings, and is used to define a first protection zone and a second protection zone located on both sides thereof in the electrical device, wherein the protection level in the first protection zone is higher than that in the second protection zone and the electrical module is located in the first protection zone. The first end surface 20A is the surface of the partition 20 facing the second protection zone, and each rigid member is located in the second protection zone.

[0104] The three busbars 10 are respectively passed through the three through-holes in a direction perpendicular to the partition 20, one end of which extends to the first protection area and electrically connects the electrical module, and the other end of which extends to the second protection area to lead the electrical module to the second protection area. In this embodiment, each busbar 10 is configured to include two sub-busbars that are overlapped and connected in parallel with each other, which is mainly to increase the current carrying capacity of the busbar 10.

[0105] In this embodiment, the sealing structure is arranged corresponding to each of the busbars 10, and the number is three, so as to perform end face sealing on the gap axial hole structure formed by the three busbars 10 and the partition 20 respectively, so that the wiring structure of this embodiment inherits all the advantages of the sealing structure and can realize protective wiring of the electrical module.

[0106] Preferably, the partition 20 of this embodiment is composed of a first plate member 21 and a second plate member 22 fixed to each other. The first plate member 21 is a metal member, and the second plate member 22 is an insulating member, which are arranged on the first plate member 21 and the two are substantially located in the same plane. The second plate member 22 is provided with the through hole, and one end surface thereof constitutes the first end surface 20A.

[0107] Therefore, by configuring the partition 20 to include metal plates and insulating plates fixed to each other, the wiring structure is firmly connected in the electrical equipment, and the current is prevented from being conducted to other locations of the electrical equipment through the sealing structure and the partition 20 when the busbar 10 is energized, causing a risk of electric shock, thereby meeting safety regulations.

[0108] Reference Figure 10-11 Embodiment 3 of the present invention further provides an electrical device based on the above wiring structure. In this embodiment, the electrical device is configured as an output wiring cabinet, which is used to output three UPSs (not shown in the figure) with three-phase AC output in parallel.

[0109] The electrical device includes a cabinet, the wiring structure and three electrical modules 60 .

[0110] The cabinet body includes a cabinet door (not shown in the figure) and a frame 70 .

[0111] The wiring structure is fixedly arranged in the cabinet, and the partition 20 defines the first protection zone and the second protection zone in the inner space of the cabinet. Figure 8-9 In addition to the three busbars 10 shown, nine drain busbars 40 and three connection busbars 50 are also included. Figure 8-9 The three busbars 10 shown are used to merge three current-drawing busbars 40, respectively, and are thus defined as merge busbars 10. In this embodiment, each three current-drawing busbars 40 are connected in parallel and then electrically connected to a merge busbar 10 and a connection busbar 50 in sequence to form a connection module corresponding to the same phase AC output.

[0112] The three electrical modules 60 are all fixedly mounted in the cabinet and are located in the first protection zone. In this embodiment, the electrical module 60 is a frame circuit breaker, whose input end is electrically connected to a UPS, and whose output end includes three lead terminals, which correspond to the output of three-phase AC power respectively.

[0113] During the specific wiring, the three lead terminals of each electrical module 60 are electrically connected to one end of the three busbars 10 through the three drainage busbars 40, and the electric energy is led out through the three wiring busbars 50 connected to the other ends of the three busbars 10, and each wiring module group corresponds to the same-phase AC output of the three electrical modules 60, so as to output the three electrical modules in parallel.

[0114] In this way, the three electrical modules 60 can be led to the second protection area through the wiring structure of this embodiment, and the user can perform wiring operations in the second protection area. Moreover, since the wiring structure adopts the aforementioned sealing structure, water vapor and dust will not be introduced into the first protection area, which can better realize the zoned protection of electrical equipment and is beneficial to extending the service life of the electrical modules or devices.

[0115] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A sealing structure for interference fit with a side surface of a first object having a polygonal cross section and extending perpendicular to the polygonal cross section; The first object at least has a first side surface, a third side surface, and a second side surface intersecting in sequence, the first side surface and the third side surface form a first angle, and the second side surface and the third side surface form a second angle; It is characterized in that include: A first rigid member having a first side sealing surface and a first extension surface that form a third angle with each other, wherein the third angle is complementary to the first angle; the first rigid member is suitable for being screwed to the first object so that the first side sealing surface is tightly matched with the first side surface, and the first extension surface and the third side surface are substantially located in the same plane; a second rigid member having a second side sealing surface and a second extension surface that form a fourth angle with each other, wherein the fourth angle is complementary to the second angle; the second rigid member is suitable for being threadedly connected to the first object so that the second side sealing surface is tightly matched with the second side surface, and the second extension surface and the third side surface are substantially located in the same plane; The third rigid member has a third side sealing surface; the third rigid member is suitable for being threadedly connected with the first rigid member and the second rigid member so that the third side sealing surface is tightly matched with the first extension surface, the second extension surface and the third side surface.

2. The sealing structure according to claim 1, characterized in that: The first object has a quadrilateral cross-section, and further has a fourth side surface intersecting both the first side surface and the second side surface; The first rigid member and the second rigid member further have a third extension surface and a fourth extension surface respectively, and when the first rigid member and the second rigid member are respectively screwed to the first object, the third extension surface, the fourth extension surface and the fourth side surface are all substantially located in the same plane; The sealing structure further comprises: A fourth rigid member has a fourth side sealing surface; the fourth rigid member is suitable for being threadedly connected with the first rigid member and the second rigid member so that the fourth side sealing surface is tightly matched with the third extension surface, the fourth extension surface and the fourth side surface.

3. The sealing structure according to claim 2, characterized in that: The first object has a rectangular cross-section; The first side surface, the third side surface, the second side surface and the fourth side surface are connected end to end in sequence, and the first side surface and the second side surface are parallel and opposite to each other and are both long side surfaces of the first object, and the third side surface and the fourth side surface are parallel and opposite to each other and are both short side surfaces of the first object; The first side sealing surface forms an angle of 90° with the first extension surface and the third extension surface, the first extension surface and the third extension surface are parallel, and the distance between the first extension surface and the third extension surface is equal to or slightly shorter than the distance between the two short side surfaces of the first object; The second side sealing surface forms an angle of 90° with the second extension surface and the fourth extension surface. The second extension surface and the fourth extension surface are parallel and the distance between them is equal to or slightly shorter than the distance between the two short side surfaces of the first object.

4. The sealing structure according to claim 3, characterized in that: The sealing structure is also used to perform end face sealing on a gap shaft hole structure formed by the first object as the axis and the second object; The second object is provided with a through hole for the first object to pass through, and has a first end surface located at one end of the through hole and perpendicular to the extending direction of the through hole; Each rigid member also has an end sealing surface perpendicular to its side sealing surfaces; the first rigid member and the second rigid member are also suitable for being threadedly connected to the second object so that each end sealing surface is tightly matched with the first end surface and realizes the end surface sealing.

5. The sealing structure according to claim 4, characterized in that: The first object extends along the third direction, the short side of the rectangular cross section of the first object is parallel to the first direction, and the long side of the rectangular cross section is parallel to the second direction; The first rigid member and the second rigid member are the same and are both configured as metal sheet metal members including a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece connected to each other as a whole; the first connecting piece and the second connecting piece are respectively perpendicular to the first direction and the third direction and have the same length along the second direction; the third connecting piece and the fourth connecting piece are respectively located at two ends of the first connecting piece and the second connecting piece along the second direction and are both perpendicular to the second direction and arranged opposite to each other along the second direction; The first side sealing surface, the end sealing surface, the first extension surface, and the third extension surface are respectively defined on the first connecting piece, the second connecting piece, the third connecting piece, and the fourth connecting piece of the first rigid member; the second side sealing surface, the end sealing surface, the second extension surface, and the fourth extension surface are respectively defined on the first connecting piece, the second connecting piece, the third connecting piece, and the fourth connecting piece of the second rigid member; The third rigid member and the fourth rigid member are identical and are both configured as metal sheet members including a fifth connecting piece and a sixth connecting piece connected to each other as one body; the fifth connecting piece and the sixth connecting piece are respectively perpendicular to the second direction and the third direction and have the same length along the first direction; The third side sealing surface and the end sealing surface are defined on the fifth connecting piece and the sixth connecting piece of the third rigid member respectively; the fourth side sealing surface and the end sealing surface are defined on the fifth connecting piece and the sixth connecting piece of the fourth rigid member respectively; The length of the first connecting piece along the second direction is equal to or slightly shorter than the long side of the rectangular cross section, and the length of the fifth connecting piece along the first direction is greater than the short side of the rectangular cross section.

6. The sealing structure according to claim 5, characterized in that: A chamfered structure is formed at the connection between the first connecting piece and the third connecting piece or the fourth connecting piece, or a chamfered structure is formed at the intersection of the side surfaces of the first object; The sealing structure further comprises: The filling seal is filled in the gap formed by the first object and the corresponding rigid part.

7. The sealing structure according to claim 5, characterized in that: The first object is provided with a first connection hole extending along the first direction, and the second object is provided with a plurality of second connection holes extending along the third direction; The first connecting sheet, the second connecting sheet, the third connecting sheet and the fourth connecting sheet are respectively provided with a third connecting hole, a fourth connecting hole, a fifth connecting hole and a sixth connecting hole; the third connecting hole and the fourth connecting hole extend along the first direction and the third direction respectively, and the fifth connecting hole and the sixth connecting hole both extend along the second direction; The fifth connecting piece is provided with a seventh connecting hole, and the seventh connecting hole extends along the second direction; Wherein, the first connection hole corresponds to the third connection hole, each of the second connection holes corresponds to the fourth connection hole, and the fifth connection hole and the sixth connection hole both correspond to the seventh connection hole; The sealing structure further comprises: A plurality of fastening components are composed of screws and nuts; each fastening component screws each connecting piece, a first object and a second object respectively through corresponding connecting holes, and each side sealing surface is tightly matched with each side surface of the first object, and each end sealing surface is tightly matched with the first end surface of the second object.

8. A wiring structure for wiring an electrical module; characterized in that: include: A sealing structure as claimed in any one of claims 4 to 7; a partition, which constitutes the second object and is provided with the through opening; the partition further defines a first protection zone and a second protection zone located on both sides thereof respectively; the protection level in the first protection zone is higher than that in the second protection zone and the electrical module is located in the first protection zone; A busbar, which constitutes the first object and passes through the through hole in a direction perpendicular to the partition; one end of the busbar extends to the first protection area and is electrically connected to the electrical module, and the other end of the busbar extends to the second protection area to lead the electrical module to the second protection area; The first end surface is the surface of the partition facing the second protection area, and each rigid member is located in the second protection area.

9. The wiring structure according to claim 8, characterized in that: The partition comprises: A first plate member, which is a metal member; The second plate is an insulating member and is fixedly connected to the first plate and is substantially located in the same plane; the second plate is also provided with the through opening.

10. An electrical device, characterized in that: include: Cabinet; A wiring structure as claimed in claim 8 or 9, and fixedly arranged in the cabinet; the partition defines the first protection zone and the second protection zone in the cabinet; An electrical module is fixedly mounted in the cabinet and located in the first protection zone; the electrical module is electrically connected to one end of the busbar so as to be connected to the second protection zone through the busbar lead.

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