Cabinet and power conversion device

Abstract

This application relates to a housing and power conversion equipment, belonging to the field of electrical equipment technology. The housing includes a housing body, a cover, a first vibration damping part, and a connector. The cover seals the housing body to form a cavity for housing the electrical equipment, and the two are connected by the connector. The first vibration damping part is located at the connection between the housing body and the cover, within at least one of a first mounting hole in the housing body and a corresponding second mounting hole in the cover, and has a third mounting hole for the connector to pass through. The housing uses detachable connectors and corresponding mounting holes, ensuring a stable connection and facilitating maintenance. The first vibration damping part effectively blocks vibration transmission and absorbs vibration energy by filling the first and / or second mounting holes, while also enhancing the housing's sealing performance. This design addresses the noise problem caused by the vibration of internal components at its source, significantly reducing sheet metal radiated noise, providing a safe and stable operating environment for electrical components, and achieving a dual improvement in noise reduction and protection performance.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a housing and power conversion device. Background Technology

[0002] Inside the power conversion equipment are various electrical devices. Among them, the operation of devices such as fans and reactors generates noise and vibration. The generated vibration is gradually transmitted to the outer casing of the power conversion equipment, causing the casing to vibrate as well. Because the outer cover of the casing adopts a large-area structure design, when the electrical equipment is running inside the casing, the vibration transmitted by devices such as fans and reactors will be amplified by the outer cover, thus generating noise. Utility Model Content

[0003] The present application provides a housing designed to reduce the technical problem of vibration transmitted from the housing body to the housing cover; another objective of the present application is to provide a power conversion device.

[0004] To achieve the above objectives, according to a first aspect of this application, a housing is provided, comprising:

[0005] The box body has a first mounting hole;

[0006] A lid that covers the box body, the lid having a second mounting hole corresponding to the first mounting hole;

[0007] A first vibration damping part is disposed in at least one of the first mounting hole and the second mounting hole, and abuts against at least one of the hole walls of the first mounting hole and the second mounting hole; the first vibration damping part has a third mounting hole.

[0008] The connector passes through the third mounting hole.

[0009] Optionally, the box body further includes a sealing element, which is sandwiched between the box body and the box cover; the sealing element protrudes along a first direction to form a rib, and at least one of the box body and the box cover has a groove adapted to the rib.

[0010] Optionally, it also includes a second vibration damping part, which is sandwiched between the box body and the box cover and sleeved on the outside of the connector;

[0011] The second vibration damping part has a fourth mounting hole, the connector passes through the fourth mounting hole and the third mounting hole, and the wall of the fourth mounting hole abuts against the connector.

[0012] Optionally, it also includes a third vibration damping part, which is disposed on the side of the first vibration damping part away from the second vibration damping part and connected to the first vibration damping part;

[0013] The third vibration damping part has a fifth mounting hole, and the wall of the fifth mounting hole abuts against the connector;

[0014] The outer diameter of the third vibration damping part is larger than the diameter of the first mounting hole.

[0015] Optionally, the first vibration damping part, the second vibration damping part, and the third vibration damping part form an integrated structure.

[0016] Optionally, the box body has an opening, and the sealing element surrounds the outer periphery of the opening to seal the box body to the box lid;

[0017] The integrated structure has multiple components, and the multiple integrated structures are arranged at intervals around the inner or outer ring of the seal.

[0018] Optionally, the third vibration damping part has at least one notch, which communicates with the fifth mounting hole.

[0019] Optionally, it also includes a fastener, which is sleeved on the outside of the connector and abuts against the side of the third damping part away from the first damping part.

[0020] Optionally, it also includes a bushing, which passes through the first mounting hole and the second mounting hole and is sleeved on the outside of the connector. The inner side of the bushing abuts against the first vibration damping part, and the outer side of the bushing abuts against the integrated structure.

[0021] According to a second aspect of this application, a power conversion device is provided, comprising the enclosure described in any one of the above claims.

[0022] The enclosure of this application embodiment includes an enclosure body, an enclosure cover, a first vibration damping part, and a connector. The enclosure cover seals the enclosure body, forming a cavity for accommodating electrical equipment between the enclosure body and the enclosure cover. The enclosure body and the enclosure cover are connected by the connector. The first vibration damping part is disposed at the connection between the enclosure body and the enclosure cover to isolate some vibrations transmitted from the enclosure body to the enclosure cover. Specifically, the enclosure body has a first mounting hole, and the enclosure cover has a second mounting hole corresponding to the first mounting hole. The first vibration damping part is disposed within at least one of the first and second mounting holes; the first vibration damping part also has a third mounting hole. The connector passes through the third mounting hole; that is, this enclosure fundamentally solves the noise problem caused by the vibration of internal components. By utilizing detachable connectors and corresponding first and second mounting holes, a stable and easy-to-maintain enclosure connection structure is constructed. A first vibration damping section is set up, which, whether filled with materials such as sealant in the mounting holes or flexibly arranged in single or double holes, can effectively block the vibration transmission path. While absorbing vibration energy, it enhances the enclosure's sealing performance, significantly reducing sheet metal radiated noise and creating a safe and stable operating environment for internal electrical components, thus achieving a dual improvement in noise reduction performance and protection function.

[0023] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 This is a schematic diagram showing one possible installation position of the first vibration damping unit provided in an exemplary embodiment of this disclosure;

[0027] Figure 2 This is a schematic diagram showing another installation position of the first vibration damping part provided in an exemplary embodiment of this disclosure;

[0028] Figure 3 This is a schematic diagram of another possible installation position of the first vibration damping unit provided in an exemplary embodiment of this disclosure;

[0029] Figure 4 This is a schematic diagram illustrating the position setting of a protruding rib provided in an exemplary embodiment of this disclosure;

[0030] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0031] Figure 6 This is a schematic diagram of a vibration damping structure constructed from the first vibration damping part, the second vibration damping part, and the third vibration damping part provided in an exemplary embodiment of this disclosure.

[0032] Figure 7 yes Figure 6 A magnified view of a section at point B in the middle;

[0033] Figure 8 This is a schematic diagram of a vibration damping structure constructed from the first vibration damping part, the second vibration damping part, the third vibration damping part, and the sealing element provided in an exemplary embodiment of this disclosure.

[0034] Figure 9 yes Figure 8 A magnified view of a section at point C.

[0035] Explanation of reference numerals in the attached figures:

[0036] X - First direction;

[0037] 100 - Box body; 110 - First mounting hole; 120 - Opening;

[0038] 200 - Cover; 210 - Second mounting hole;

[0039] 300 - First vibration damping section; 310 - Third mounting hole;

[0040] 400 - Connector;

[0041] 500 - Seal; 510 - Rib; 520 - Sixth mounting hole;

[0042] 600 - Second vibration damping section; 610 - Fourth mounting hole;

[0043] 700 - Third vibration damping section; 710 - Fifth mounting hole; 720 - Notch;

[0044] 800-Bushing;

[0045] 900-Integrated Structure

[0046] 1000 - Fastener. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0049] In the accompanying drawings of the embodiments of this application, the first direction X is indicated by an arrow marked X. The description of this application introduces the first direction X to more clearly illustrate the structure and relative positional relationship of the box. In practical applications, the first direction X can point to any direction in space. For ease of understanding, in this application, the first direction X is used as the height direction of the box, that is, the direction in which the box body 100 faces the box cover 200 after the box is assembled.

[0050] In the operating system of modern power electronic equipment, the vibration caused by the operation of internal components has always been a key challenge in noise control. When various electrical devices are continuously running in a housing, the mechanical vibrations generated by the devices themselves are transmitted through the structure and amplified by the outer cover, ultimately transforming into disturbing noise.

[0051] Taking inverters, a crucial power conversion device, as an example, the integrated fans and reactors within them generate noise and vibration during operation. Furthermore, due to the widespread use of power conversion equipment in various indoor and outdoor environments, stringent requirements are placed on the equipment's noise reduction performance and sealing protection level. Constrained by the aesthetic requirements of industrial design and appearance consistency, the outer cover of power conversion equipment often adopts a simple, large flat plate structure. While this design satisfies visual aesthetic needs, it provides a convenient channel for vibration propagation. The vibrations generated by the fans and reactors are transmitted to the outer cover through the structure of the power conversion equipment enclosure. The large flat plate of the outer cover further amplifies the vibration energy, ultimately forming sharp, piercing sheet metal radiated noise. This noise can also cause other internal components to vibrate, affecting their lifespan. In addition, it severely disrupts the comfort of the surrounding environment, becoming a major pain point affecting user experience.

[0052] According to the first aspect of this application, please refer to Figure 1 , Figure 2 and Figure 3 This application provides a housing, which includes a housing body 100, a housing cover 200, a first vibration damping part 300, and a connector 400. The housing cover 200 covers the housing body 100, forming a housing cavity for accommodating electrical equipment between the housing body 100 and the housing cover 200. The housing body 100 and the housing cover 200 are connected by the connector 400. The first vibration damping part 300 is disposed at the connection between the housing body 100 and the housing cover 200 to isolate some vibrations transmitted from the housing body 100 to the housing cover 200. Specifically, the housing body 100 has a first mounting hole 110, and the housing cover 200 has a second mounting hole 210 corresponding to the first mounting hole 110. The first damping part 300 is disposed within at least one of the first mounting hole 110 and the second mounting hole 210, and abuts against at least one of the hole walls of the first mounting hole 110 and the second mounting hole 210. Additionally, the first damping part 300 has a third mounting hole 310. The connector 400 passes through the third mounting hole 310; that is, the first damping part 300 is sleeved on the outside of the connector 400.

[0053] It should be noted that the first mounting hole 110 and the second mounting hole 210 are used for the installation of the connector 400, forming a stable assembly foundation. The connector 400 adopts a detachable connection structure, featuring flexible installation and convenient disassembly, meeting equipment assembly requirements while also facilitating subsequent inspection and maintenance. The connector 400 can be secured to the housing body 100 and the housing cover 200 using bolts and fasteners.

[0054] Taking a set of connecting structural units (the connecting structural units refer to the first mounting hole 110, the second mounting hole 210, and the connector 400) as an example, the systematic structural description is as follows. This set of connecting structural units serves as the basic connecting module and carries the assembly function. The first mounting hole 110 is located at the edge of the housing body 100, and the second mounting hole 210 is correspondingly distributed in the same contour area of ​​the housing cover 200, and the two are aligned in space. The selected connector 400, whether using bolt and nut, pin and pin combination, snap-fit, dovetail, or other connection methods, can achieve a tight connection between the housing body 100 and the housing cover 200 through the guidance of the first mounting hole 110 and the second mounting hole 210. During the assembly process, the connector 400 passes through the first mounting hole 110 and the second mounting hole 210, generating a fastening force through its own structural characteristics, so that the housing body 100 and the housing cover 200 fit together, constructing a stable mechanical connection structure, effectively resisting the vibration and impact generated by external environmental factors and the operation of internal equipment, and ensuring the safe and stable operation of the electrical components inside the housing. When there are multiple connecting structural units, the multiple connecting structural units are arranged in a ring around each other at intervals, providing reliable support for the stable connection between the box body 100 and the box cover 200.

[0055] It is worth mentioning that the first vibration damping part 300 can be made of polyurethane, rubber or its composite materials, expanded polytetrafluoroethylene, fiber-reinforced elastomers, or other materials with elasticity and a certain degree of compressive resilience. After filling at least one of the first mounting holes 110 and 210, it can tightly fit the hole walls and the connector 400. When the enclosure body 100 vibrates due to the operation of internal equipment and attempts to transmit it to the enclosure cover 200, the first vibration damping part 300 can absorb the vibration energy through its own elastic deformation, while simultaneously hindering the transmission path of the vibration and applying a damping effect. In addition, while providing vibration damping, the first vibration damping part 300 can also fill the gap between at least one of the first mounting holes 110 and 210 and the connector 400, effectively improving the enclosure's sealing performance, preventing dust, moisture, etc. from entering, achieving the dual effects of vibration damping and protection, significantly reducing the vibration intensity transmitted to the enclosure cover 200, reducing noise caused by vibration, and improving the overall noise reduction performance and operational stability of the power conversion equipment enclosure.

[0056] It should be noted that the first vibration damping part 300 being disposed in at least one of the first mounting hole 110 and the second mounting hole 210 means that in a set of connecting structural units, the first vibration damping part 300 can be disposed in either the first mounting hole 110 or the second mounting hole 210, or simultaneously disposed in both. That is, the first vibration damping part 300 is disposed in the first mounting hole 110, or the first vibration damping part 300 is disposed in the second mounting hole 210, or the first vibration damping part 300 is disposed in both the first mounting hole 110 and the second mounting hole 210. Specifically, when the first vibration damping part 300 is only disposed in the first mounting hole 110 (e.g., Figure 1 As shown), some vibration has been blocked from being transmitted from the housing body 100 to the connector 400, thereby blocking some vibration from being transmitted to the housing cover 200, thus achieving a certain vibration reduction effect. Similarly, when the first vibration damping part 300 is only provided in the second mounting hole 210 (as shown), Figure 2 As shown), the first vibration damping part 300 achieves the purpose of blocking some vibration from being transmitted from the housing body 100 to the connector 400, thereby blocking some vibration from being transmitted to the housing cover 200. If the first vibration damping part 300 is provided in both the first mounting hole 110 and the second mounting hole 210 (as shown), Figure 3 As shown in the figure, there is a double partition in the path of vibration transmission to the box cover 200, which makes the vibration reduction effect better.

[0057] In some examples, if a first vibration damping part 300 is provided in both the first mounting hole 110 and the second mounting hole 210, there are two solutions. One is that a first vibration damping part 300 is provided separately in both the first mounting hole 110 and the second mounting hole 210. In this solution, the outer wall of the first vibration damping part 300 in the first mounting hole 110 abuts against the hole wall of the first mounting hole 110, and the inner wall of the first vibration damping part 300 abuts against the connector 400. The outer wall of the first vibration damping part 300 in the second mounting hole 210 abuts against the hole wall of the second mounting hole 210, and the inner wall of the first vibration damping part 300 abuts against the connector 400. Secondly, it can also be the same first damping part 300, except that this first damping part 300 is sleeved on the outside of the connector 400 along the axial direction of the connector 400. That is, one end of the first damping part 300 extends into the first mounting hole 110, and the other end of the first damping part 300 extends into the second mounting hole 210. Specifically, a portion of the outer side wall of the first damping part 300 abuts against the hole wall of the first mounting hole 110, and a portion of the outer side wall of the first damping part 300 abuts against the hole wall of the second mounting hole 210. In addition, the inner side wall of the first damping part 300 abuts against the connector 400.

[0058] Through the above technical solution, this embodiment fundamentally solves the noise problem caused by vibration of internal components in the enclosure. A stable and easy-to-maintain enclosure connection structure is constructed using detachable connectors 400 and corresponding first mounting holes 110 and second mounting holes 210. The first vibration damping part 300, whether filled with elastic materials such as polyurethane, rubber, or their composites, expanded polytetrafluoroethylene, or fiber-reinforced elastomers, and whether flexibly arranged in a single or double hole (at least one of the first mounting hole 110 and second mounting hole 210), effectively blocks the vibration transmission path. While absorbing vibration energy, it enhances the enclosure's sealing performance, significantly reducing sheet metal radiated noise and creating a safe and stable operating environment for internal electrical components, achieving a dual improvement in noise reduction performance and protection function.

[0059] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 To enhance the sealing and protective performance of the enclosure, a sealing element 500 is added. The sealing element 500 is sandwiched between the enclosure body 100 and the enclosure cover 200, tightly filling the gap at their joint. In other words, the sealing element 500 not only effectively prevents external dust, moisture, and corrosive gases from entering the enclosure, providing a clean and dry operating environment for the electrical equipment, but also assists the first vibration damping unit 300 by using its own elasticity to buffer vibration, reducing vibration transmission between the enclosure body 100 and the enclosure cover 200, further reducing noise generated by vibration. This achieves a synergistic improvement in both sealing and noise reduction performance, comprehensively ensuring the stable operation of power conversion equipment and other electrical equipment.

[0060] In some examples, the layout of the seal 500 is flexible, allowing it to be installed either inside or outside the connector 400. The seal 500 can be positioned either inside or outside the connector 400. This design allows a natural gap to form between the seal 500 and the connector 400 (e.g., ...). Figure 4 (As shown), to avoid mutual interference between the two. The existence of this gap not only helps the seal 500 to fully exert its sealing and buffering performance and prevents the connector 400 from squeezing and damaging the seal 500 during installation, but also provides operating space for the assembly and disassembly of the enclosure, facilitating later maintenance and repair. While ensuring the sealing performance of the enclosure, it further improves the practicality and reliability of the overall structure.

[0061] In some examples, please refer to Figure 1 , Figure 2 and Figure 3The sealing element 500 has a sixth mounting hole 520, which corresponds to the third mounting hole 310, forming a through-type installation channel. When the connector 400 is sequentially inserted through the sixth mounting hole 520 and the third mounting hole 310, it not only securely connects the box body 100 and the box cover 200, but also ensures that the sealing element 500 fits tightly against the mounting surface. This enhances the overall structural integrity while fully utilizing the elastic buffering and dustproof / waterproof performance of the sealing element 500. This combination of sealing function and connection structure ensures the reliability of the box connection and further reduces vibration transmission through the flexible support of the sealing element 500, achieving multiple improvements in connection strength, sealing effect, and vibration reduction performance.

[0062] It should be noted that, to further improve the sealing and stability of the enclosure, the sealing element 500 has a protruding rib 510 along the first direction X. The rib 510 is embedded in at least one of the enclosure body 100 and the enclosure cover 200. It is understood that at least one of the enclosure body 100 and the enclosure cover 200 has a groove adapted to the rib 510. The rib 510 can be embedded in the groove on the enclosure body 100, or it can be embedded in the groove on the enclosure cover 200. Both the enclosure body 100 and the enclosure cover 200 have grooves, and each groove is embedded by a rib 510. That is, the rib 510 can be located on either side of the sealing element 500 along the first direction X, or it can be located on both sides of the sealing element 500 along the first direction X.

[0063] Through the above technical solution, the addition of the sealing element 500, sandwiched between the box body 100 and the box cover 200, constructs a highly efficient dustproof and waterproof barrier. Simultaneously, its elastic properties assist the first vibration damping part 300, significantly reducing noise caused by vibration transmission. Its flexible internal and external layout design avoids interference with the connecting element 400 while providing convenient space for assembly and maintenance, ensuring stable sealing and buffering performance. Furthermore, the sealing element 500 can be connected to the connecting element 400 via a sixth mounting hole 520. This solution not only strengthens the box body connection but also further weakens the vibration transmission path through the flexible support of the sealing element 500. In other words, this embodiment achieves sealing protection, noise reduction and vibration damping, and a more stable structure. From a sealing perspective, when the rib 510 is embedded in the box body 100 or the box cover 200, or simultaneously in both, it can more tightly fit the contact surface, effectively filling gaps and significantly enhancing the sealing effect. Furthermore, it can more effectively block external dust, moisture, corrosive gases, etc., providing more reliable protection for internal electrical equipment and shielding it from the effects of harsh external environments. From a structural stability perspective, the rib 510, embedded in at least one of the enclosure body 100 and the enclosure cover 200, increases the mechanical connection force between the seal 500 and various parts of the enclosure. When the enclosure is subjected to vibration or external forces, the rib 510 can provide a certain degree of buffering and fixation, reducing the displacement and loosening of the seal 500, thereby improving the stability of the connection between the enclosure body 100 and the enclosure cover 200. Working in conjunction with the first vibration damping part 300 and other connecting structures, it better resists the vibration and impact generated by the operation of internal equipment, ensuring the integrity and reliability of the enclosure structure. In addition, the presence of the rib 510 can also guide the installation and positioning of the seal 500 to a certain extent, making it easier to accurately place the seal 500 in the appropriate position during assembly, improving assembly efficiency, reducing problems such as seal failure due to improper installation, and improving the overall quality and performance of the product.

[0064] In some embodiments, please refer to Figure 5 To further enhance the vibration reduction and noise reduction performance of the enclosure, the enclosure structure was further optimized by adding a second vibration damping part 600. This second vibration damping part 600 is sandwiched between the enclosure body 100 and the enclosure cover 200, and is fitted over the connector 400. The second vibration damping part 600 has a fourth mounting hole 610, which corresponds to the third mounting hole 310 of the first vibration damping part 300. The connector 400 passes through both the fourth and third mounting holes 610, with the wall of the fourth mounting hole 610 abutting against the connector 400. When the connector 400 passes through the fourth and third mounting holes 610 in sequence, it not only securely connects the enclosure body 100 and the enclosure cover 200, but also integrates the two vibration damping parts (the first vibration damping part 300 and the second vibration damping part 600) with the enclosure structure.

[0065] It should be noted that the inclusion of the first vibration damping part 300 and the second vibration damping part 600 significantly enhances the vibration isolation capability of the enclosure. In the scheme where the first vibration damping part 300 is only installed within the first mounting hole 110, the first vibration damping part 300 preferentially buffers and dissipates the vibration transmitted by the enclosure body 100, while the second vibration damping part 600 further weakens the vibration intensity. The first vibration damping part 300 and the second vibration damping part 600 are fixed together by the connecting member 400, forming a relay-type vibration damping along the vibration transmission path, attenuating the vibration energy layer by layer. In the scheme where the first vibration damping part 300 is only installed within the second mounting hole 210, the second vibration damping part 600 preferentially buffers and dissipates the vibration transmitted by the enclosure body 100, while the first vibration damping part 300 further weakens the vibration intensity. The first vibration damping part 300 and the second vibration damping part 600 are fixed together by the connecting member 400, forming a relay-type vibration damping along the vibration transmission path, attenuating the vibration energy layer by layer. In the design where a first vibration damping part 300 is provided in both the first mounting hole 110 and the second mounting hole 210, the first vibration damping part 300 in the first mounting hole 110 initially buffers and dissipates the vibration transmitted by the housing body 100, while the second vibration damping part 600 further weakens the intensity of the vibration. Then, the first vibration damping part 300 in the second mounting hole 210 weakens the intensity of the vibration again. The two first vibration damping parts 300 and the second vibration damping part 600 are fixed by the through connection 400, forming a relay-type vibration damping along the vibration transmission path, attenuating the vibration energy layer by layer.

[0066] In some examples, such as Figure 5 As shown, the first vibration damping part 300 and the second vibration damping part 600 are an integral structure. In the scheme where the first vibration damping part 300 is only provided in the first mounting hole 110, the first vibration damping part 300 and the second vibration damping part 600 in the first mounting hole 110 are an integral structure, and this integral structure buffers and dissipates the vibration transmitted by the box body 100. In the scheme where the first vibration damping part 300 is only provided in the second mounting hole 210, the first vibration damping part 300 and the second vibration damping part 600 in the second mounting hole 210 are an integral structure, and this integral structure buffers and dissipates the vibration transmitted by the box body 100. In the scheme where the first vibration damping part 300 is provided in both the first mounting hole 110 and the second mounting hole 210, the first vibration damping part 300 in the first mounting hole 110, the first vibration damping part 300 in the second mounting hole 210, and the second vibration damping part 600 are an integral structure, and this integral structure buffers and dissipates the vibration transmitted by the box body 100. This example not only simplifies the assembly process and reduces the fitting errors caused by the combination of multiple parts, but also achieves vibration attenuation with a more efficient and coherent mechanical transmission path, significantly improving the overall vibration reduction and noise reduction performance and structural stability of the enclosure, and providing a more reliable guarantee for the stable operation of electrical equipment.

[0067] Through the above technical solution, the added second vibration damping unit 600 and the first vibration damping unit 300 form a dual vibration damping system. The design of the connector 400 passing through multiple mounting holes allows the second vibration damping unit 600 and the first vibration damping unit 300 to form a stable whole with the enclosure, achieving relay-style vibration attenuation and significantly enhancing vibration isolation capabilities. Furthermore, the first vibration damping unit 300 and the second vibration damping unit 600 can also be designed as a single structure, reducing error risks through a streamlined assembly process and optimizing the mechanical transmission path. This not only significantly improves the vibration damping and noise reduction efficiency of the enclosure but also strengthens structural stability, laying a solid technical foundation for electrical equipment to resist vibration interference under complex operating conditions and maintain long-term stable operation, effectively solving the noise and vibration problems in the operation of power electronic equipment.

[0068] In some embodiments, please refer to Figure 5 To further optimize the vibration reduction performance of the enclosure, a third vibration damping section 700 is added. This third vibration damping section 700 is connected to the first vibration damping section 300 and is positioned along the first direction X on the side of the first vibration damping section 300 opposite to the second vibration damping section 600, forming a vibration damping structure together with the first and second vibration damping sections 300 and 600. The third vibration damping section 700 has a fifth mounting hole 710, corresponding to the fourth mounting hole 610 and the third mounting hole 310. The wall of the fifth mounting hole 710 abuts against the connector 400, and the outer diameter of the third vibration damping section 700 is larger than the diameter of the first mounting hole 110.

[0069] It should be noted that, in the first direction X (i.e., the height direction of the enclosure), the enclosure body 100, the third vibration damping part 700, the first vibration damping part 300, the second vibration damping part 600, and the enclosure cover 200 sequentially form a multi-layered vibration damping path. The fifth mounting hole 710 is coaxially corresponding to the fourth mounting hole 610 and the third mounting hole 310, and the connecting piece 400 passes through and fixes it. The hole walls of the fifth mounting hole 710, the fourth mounting hole 610, and the third mounting hole 310 are all in close contact with the connecting piece 400 to ensure that the vibration energy is attenuated by the elastic material. The outer diameter of the third vibration damping part 700 is larger than that of the first mounting hole 110, so that the side of the third vibration damping part 700 facing the first vibration damping part 300 can fit snugly against the enclosure body 100, thereby better confining the first vibration damping part 300 within the first mounting hole 110.

[0070] It should be noted that the third damping section 700 can be made of elastic materials such as polyurethane or fiber-reinforced elastomers, which have both high elastic modulus and damping characteristics, and can dissipate energy through internal friction of molecular chains under high-frequency vibration. When vibration is transmitted along the connector 400, the elastic material absorbs energy through radial compression deformation, blocking the rigid transmission path; the third damping section 700 buffers vertical vibration through material compression and elasticity.

[0071] As can be seen from the above technical solution, the connector 400 sequentially passes through the fifth mounting hole 710, the fourth mounting hole 610, and the third mounting hole 310, securely connecting the first vibration damping part 300, the second vibration damping part 600, and the third vibration damping part 700. The third vibration damping part 700 directly abuts against the housing body 100 or the housing cover 200, and can quickly absorb vibration energy through its own elastic deformation at the initial or terminal stage of vibration transmission, forming an additional buffer barrier. That is, the first vibration damping part 300, the second vibration damping part 600, and the third vibration damping part 700 work together to intercept, buffer, and dissipate vibration from different nodes, significantly improving the housing's ability to suppress vibration. For some examples, please refer to [link to example]. Figure 5 The outer diameter of the third damping part 700 is a first diameter R1, and the outer diameter of the first damping part 300 is a second diameter R2, satisfying that the first diameter R1 is greater than the second diameter R2. It should be noted that when only the first mounting hole 110 is provided with the first damping part 300, the first diameter R1 being greater than the second diameter R2 means that the first diameter R1 is greater than the diameter of the first mounting hole 110. When only the second mounting hole 210 is provided with the first damping part 300, the first diameter R1 being greater than the second diameter R2 means that the first diameter R1 is greater than the diameter of the second mounting hole 210. When both the first mounting hole 110 and the second mounting hole 210 are provided with the first damping part 300, and the first diameter R1 is greater than the second diameter R2, it means that the first diameter R1 is greater than both the diameters of the first mounting hole 110 and the diameter of the second mounting hole 210.

[0072] Through the above technical solution, on the one hand, compared with the first vibration damping part 300, the outer diameter of the third vibration damping part 700 is larger. When the third vibration damping part 700 abuts against the box body 100 or the box cover 200, the side of the third vibration damping part 700 facing the first vibration damping part 300 abuts against the box body 100 or the box cover 200, which can more evenly disperse the stress generated by vibration and avoid structural damage caused by excessive local stress. On the other hand, through the difference in size, a stepped vibration damping layout is formed, so that the vibration is transmitted and energy is lost due to the change in contact area, which further enhances the vibration damping effect.

[0073] In some embodiments, the first vibration damping unit 300, the second vibration damping unit 600, and the third vibration damping unit 700 form an integrated structure 900. This integrated structure 900 presents differentiated layout forms and vibration damping logic based on three installation scenarios of the first vibration damping unit 300.

[0074] When the first vibration damping part 300 is only disposed within the first mounting hole 110, the integrated structure 900 is composed of the third vibration damping part 700, the first vibration damping part 300, and the second vibration damping part 600. The third vibration damping part 700 is connected to the first vibration damping part 300 within the first mounting hole 110 along the first direction X, and the other end extends to the outside of the box body 100 or the box cover 200; the second vibration damping part 600 is sandwiched between the box body 100 and the box cover 200, and the third vibration damping part 700, the first vibration damping part 300, and the second vibration damping part 600 are fixed together by the connector 400 passing through their respective mounting holes. When vibration is transmitted from the box body 100, it passes through the buffer and dissipation of the third vibration damping part 700, the first vibration damping part 300 and the second vibration damping part 600 in sequence, forming a blocking path of the box body 100, the three layers of vibration damping parts (i.e. the third vibration damping part 700, the first vibration damping part 300 and the second vibration damping part 600) and the box cover 200.

[0075] When the first vibration damping part 300 is only provided in the second mounting hole 210, the integrated structure 900 is composed of the second vibration damping part 600, the first vibration damping part 300, and the third vibration damping part 700. The second vibration damping part 600 is close to one side of the box body 100 and is connected to the first vibration damping part 300 in the second mounting hole 210 of the box cover 200. The third vibration damping part 700 extends to the outside of the box cover 200. The second vibration damping part 600, the first vibration damping part 300, and the third vibration damping part 700 are connected by the connector 400 to form a whole. Vibration is first attenuated by the second vibration damping part 600 between the box body 100 and the connector 400, then buffered by the first vibration damping part 300 on the side of the box cover 200, and finally a barrier is formed by the third vibration damping part 700 on the outside of the box cover 200.

[0076] When the first vibration damping part 300 is simultaneously disposed in the first mounting hole 110 and the second mounting hole 210, the integrated structure 900 is composed of the third vibration damping part 700, the first vibration damping part 300 in the first mounting hole 110, the second vibration damping part 600, and the first vibration damping part 300 in the second mounting hole 210. The first vibration damping part in the first mounting hole 110 is connected to the third vibration damping part 700, and the second vibration damping part 600 is connected to both first vibration damping parts 300 respectively, and is stably fixed by the through-hole connector 400. Vibration needs to pass through multiple damping parts in sequence: the third vibration damping part 700, the first vibration damping part 300 in the first mounting hole 110, the second vibration damping part 600, and the first vibration damping part 300 in the second mounting hole 210.

[0077] As can be seen from the above technical solutions, the integrated structure 900 reduces the assembly process of multiple parts and avoids fitting errors. Its continuous damping network formed by elastic material can adapt to the vibration characteristics of different equipment. In single-hole or double-hole vibration reduction scenarios, it can achieve efficient isolation of vibration transmission path through differentiated structural design.

[0078] In some embodiments, the integrated structure 900 described above may also integrate a sealing element 500 to achieve synergy between vibration damping and sealing functions. It should be noted that when the first vibration damping part 300 is only provided in the first mounting hole 110, the sealing element 500 is sandwiched between the box body 100 and the box cover 200 (it may be located inside or outside the connector 400), and its rib 510 is embedded in the groove of the box body 100 or the box cover 200. The sixth mounting hole 520 is coaxially corresponding to the third mounting hole 310, the fourth mounting hole 610 and the fifth mounting hole 710 in the integrated structure 900. After the connector 400 passes through, it can compact the sealing element 500. The three-layer vibration damping structure composed of the first vibration damping part 300, the second vibration damping part 600 and the third vibration damping part 700 blocks vibration while achieving gap sealing.

[0079] When the first damping part 300 is only provided in the second mounting hole 210, the sealing element 500 is arranged at the closing point of the box body 100 and the box cover 200 (which may be located inside or outside the connector 400). The sixth mounting hole 520 is coaxially corresponding to the third mounting hole 310, the fourth mounting hole 610 and the fifth mounting hole 710 in the integrated structure 900. The damping structure composed of the first damping part 300, the second damping part 600 and the third damping part 700 blocks vibration while achieving gap sealing.

[0080] When the first vibration damping part 300 is simultaneously provided in the first mounting hole 110 and the second mounting hole 210, the sealing element 500 is sandwiched between the box body 100 and the box cover 200 (it can be located inside or outside the connector 400). The rib 510 can be embedded in the grooves of both the box body 100 and the box cover 200. The sixth mounting hole 520 is coaxially corresponding to the third mounting hole 310, the fourth mounting hole 610 and the fifth mounting hole 710 in the integrated structure 900. After the connector 400 passes through, the first vibration damping part 300 (two places), the second vibration damping part 600 and the third vibration damping part 700 constitute a four-layer vibration damping structure. The sealing element 500 fills all gaps through elastic deformation, simultaneously improving the protection level and vibration damping performance.

[0081] As can be seen from the above technical solution, in this integrated design, the elastic material of the seal 500 can assist the first damping part 300, the second damping part 600 and the third damping part 700 in absorbing vibration. Its rib 510 and the third damping part 700 form a double seal. Moreover, the sixth mounting hole 520 of the seal 500 is coaxially designed with the third mounting hole 310, the fourth mounting hole 610 and the fifth mounting hole 710 in the integrated structure 900, which is compatible with the assembly process. When the connector 400 passes through, it can simultaneously complete the fixing of the integrated structure 900 and the compaction of the seal 500, thereby improving the assembly efficiency.

[0082] In some embodiments, the box body 100 has an opening 120, and a sealing member 500 surrounds the outer periphery of the opening 120 to seal the box body 100 with the box cover 200. Multiple integrated structures 900 are arranged at intervals around the inner or outer ring of the sealing member 500. It should be noted that when multiple integrated structures 900 are arranged around the inner ring of the sealing member 500, close to the opening 120 of the box body 100, they preferentially block the transmission of internal vibrations to the box cover 200. The sealing member 500 and the integrated structure 900 form inner vibration damping and outer sealing, and the connecting member 400 compacts the sealing member 500 when it is fixed through. If multiple integrated structures 900 are arranged around the outer ring of the sealing member 500, the integrated structure 900 is close to the outer side of the box body 100, blocking the outward transmission of vibrations. The sealing member 500 and the integrated structure 900 form outer vibration damping and inner sealing. In both layouts, the integrated structure 900 is evenly distributed around the seal 500 to balance the vibration damping force, and forms a vibration reduction and sealing synergy structure at the opening 120 cover position to solve the problem of noise generated by vibration.

[0083] In some embodiments, please refer to Figure 6 and Figure 7 Based on the fact that the outer diameter (first diameter R1) of the third vibration damping part 700 is larger than the outer diameter (second diameter R2) of the first vibration damping part 300, at least one notch 720 is provided on the third vibration damping part 700 to solve the installation and adaptation problem. This notch 720 enables the third vibration damping part 700 to deform. When the third vibration damping part 700 passes through the first mounting hole 110 and / or the second mounting hole 210, the structure at the notch 720 can undergo elastic deformation first, allowing the overall shape of the third vibration damping part 700 to be flexibly adjusted, effectively reducing dimensional interference with the mounting holes (first mounting hole 110 and / or second mounting hole 210). Through the above technical solution, the third vibration damping part 700 can maintain the stress dispersion and vibration damping advantages brought by the large outer diameter (first diameter R1), and can also smoothly complete installation through controllable deformation, ensuring that in complex assembly environments, each vibration damping part and the housing mounting structure fit closely together, achieving a perfect balance between efficient vibration damping performance and convenient installation.

[0084] In some embodiments, the enclosure further includes a fastener 1000, which is sleeved on the outside of the connector 400 and abuts against the side of the third vibration damping part 700 away from the first vibration damping part 300. That is, the connection between the enclosure body 100 and the enclosure cover 200 is achieved through the cooperation of the connector 400 and the fastener 1000. It should be noted that the fastener 1000 can be a nut, threadedly connected to the connector 400, which is a bolt. The tightening force generated when the nut is tightened not only securely connects the enclosure body 100 and the enclosure cover 200, but also ensures that the third vibration damping part 700 fits tightly against the enclosure body 100, fully utilizing the elastic buffering characteristics of the third vibration damping part 700. When vibration is caused by the operation of equipment inside the enclosure, the third vibration damping part 700 can absorb the vibration energy transmitted by the nut, preventing the vibration from spreading to other parts of the enclosure through the connector 400.

[0085] The difference in diameter between the first diameter R1 and the second diameter R2 facilitates the tightening of the nut. When the nut is tightened, the larger outer diameter of the third damping part 700 provides a larger pressure-bearing area, allowing the tightening force applied by the nut to be applied evenly and stably, thus pressing the third damping part 700 tightly and firmly against the surface of the housing body 100. This tight fit not only avoids the loss of damping performance due to insufficient contact, but also effectively prevents displacement or loosening under long-term vibration conditions by increasing the friction between the third damping part 700 and the housing body 100, ensuring that the damping structure is always in optimal working condition.

[0086] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,and Figure 5 The enclosure structure has been further optimized by adding a bushing 800. The bushing 800 passes through the first mounting hole 110 and the second mounting hole 210, and is fitted over the connector 400. The bushing 800 abuts against the first vibration damping part 300, and the outer side of the bushing 800 abuts against the integrated structure 900. The bushing 800 and the first vibration damping part 300 work together to significantly improve the overall performance of the enclosure.

[0087] It can be understood that when the first damping part 300 is provided in the first mounting hole 110, the bushing 800 abuts against the first damping part 300 and also against the wall of the second mounting hole 210; the first damping part 300 is sandwiched between the bushing 800 and the wall of the first mounting hole 110. When the first damping part 300 is provided in the second mounting hole 210, the bushing 800 abuts against the first damping part 300 and also against the wall of the first mounting hole 110; the first damping part 300 is sandwiched between the bushing 800 and the wall of the second mounting hole 210. When both the first mounting hole 110 and the second mounting hole 210 are provided with a first vibration damping part 300, the bushing 800 abuts against the two first vibration damping parts 300 respectively. That is, one first vibration damping part 300 is sandwiched between the hole wall of the first mounting hole 110 and the bushing 800, and the other first vibration damping part 300 is sandwiched between the hole wall of the second mounting hole 210 and the bushing 800. Specifically, depending on the different positions of the first vibration damping part 300, when the first vibration damping part 300 is located in the first mounting hole 110, the bushing 800 fits tightly with the first vibration damping part 300 to fully utilize its elastic buffering effect, and abuts against the wall of the second mounting hole 210 to ensure the stability of the installation structure; when the first vibration damping part 300 is located in the second mounting hole 210, the bushing 800 cooperates with the first vibration damping part 300 in the second mounting hole 210 and is in close contact with the wall of the first mounting hole 110; and when the first vibration damping part 300 is located in both the first mounting hole 110 and the second mounting hole 210, the bushing 800 abuts against both first vibration damping parts 300 simultaneously, forming a continuous vibration damping buffer zone between the first mounting hole 110 and the second mounting hole 210, further enhancing the vibration isolation effect.

[0088] It should be noted that, from a structural design perspective, the bushing 800 plays multiple roles. First, as a transitional component between the mounting hole and the connector 400, the bushing 800 effectively fills the gap between them, preventing friction and wear caused by direct contact between the connector 400 and the mounting hole, thus extending the service life of the connection structure. Second, the bushing 800, in close contact with the first vibration damping part 300, assists in the transmission of vibration energy. When vibration is transmitted along the connector 400, the bushing 800 can promptly transmit the vibration energy to the first vibration damping part 300, enhancing the vibration damping effect.

[0089] Through the above technical solution, the cooperation between bushing 800 and first vibration damping part 300 not only effectively improves the vibration damping performance of the enclosure, but also optimizes the reliability of the connection structure, providing a more stable and reliable operating environment for internal electrical equipment, reflecting the organic combination of functionality and practicality in structural design.

[0090] According to a second aspect of this disclosure, a power conversion device is provided, which includes the aforementioned enclosure. This power conversion device possesses all the beneficial effects of the enclosure, which will not be elaborated further herein. It should be noted that the power conversion device can be an inverter, rectifier, charging pile, motor controller, or other similar equipment.

[0091] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0092] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0093] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A box, characterized in that, include: The box body (100) has a first mounting hole (110); A lid (200) covers the box body (100), and the lid (200) has a second mounting hole (210) corresponding to the first mounting hole (110); The first vibration damping part (300) is disposed in at least one of the first mounting hole (110) and the second mounting hole (210) and abuts against at least one of the hole wall of the first mounting hole (110) and the hole wall of the second mounting hole (210). The first vibration damping part (300) has a third mounting hole (310). The connector (400) passes through the third mounting hole (310).

2. The housing according to claim 1, characterized in that, The box body also includes a sealing element (500), which is sandwiched between the box body (100) and the box cover (200); the sealing element (500) has a protruding portion along the first direction (X) to form a rib (510), and at least one of the box body (100) and the box cover (200) has a groove adapted to the rib (510).

3. The housing according to claim 2, characterized in that, It also includes a second vibration damping part (600), which is sandwiched between the box body (100) and the box cover (200) and sleeved on the outside of the connector (400); The second vibration damping part (600) has a fourth mounting hole (610), the connector (400) passes through the fourth mounting hole (610) and the third mounting hole (310), and the hole wall of the fourth mounting hole (610) abuts against the connector (400).

4. The housing according to claim 3, characterized in that, It also includes a third vibration damping part (700), which is disposed on the side of the first vibration damping part (300) away from the second vibration damping part (600) and connected to the first vibration damping part (300); The third vibration damping part (700) has a fifth mounting hole (710), the wall of the fifth mounting hole (710) abuts against the connector (400); The outer diameter of the third damping part (700) is larger than the diameter of the first mounting hole (110).

5. The housing according to claim 4, characterized in that, The first vibration damping part (300), the second vibration damping part (600) and the third vibration damping part (700) form an integrated structure (900).

6. The housing according to claim 5, characterized in that, The box body (100) has an opening (120), and the sealing member (500) surrounds the outer periphery of the opening (120) to seal the box body (100) with the box cover (200); The integrated structure (900) has multiple units, and the multiple integrated structures (900) are spaced apart around the inner or outer ring of the seal (500).

7. The housing according to claim 5, characterized in that, The third damping part (700) has at least one notch (720) which communicates with the fifth mounting hole (710).

8. The housing according to claim 7, characterized in that, It also includes a fastener (1000), which is sleeved on the outside of the connector (400) and abuts against the side of the third damping part (700) away from the first damping part (300).

9. The housing according to claim 5, characterized in that, It also includes a bushing (800), which passes through the first mounting hole (110) and the second mounting hole (210) and is sleeved on the outside of the connector (400). The inner side of the bushing (800) abuts against the first damping part (300), and the outer side of the bushing (800) abuts against the integrated structure (900).

10. A power conversion device, characterized in that, include: The housing as described in any one of claims 1 to 9.

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