Nut device, fastening device and electrical equipment cabinet

Abstract

The utility model relates to a nut device, a fastening device and an electrical equipment cabinet. The nut arrangement (10) comprises: a base plate (12) comprising a first surface (122) and a second surface (124) opposite the first surface (122), the first surface (122) being adapted to contact a surface of at least one first object to be fixed; and a nut (14) fixedly arranged on the second surface (124) of the base plate (12) and adapted to receive the bolt (20); wherein the base plate (12) further comprises at least one hook portion (16) configured to provide support for the nut arrangement (10) prior to the nut (14) being fastened together with the bolt (20). According to the present disclosure, the fastening operation of objects such as busbars can be simplified.

Description

Technical Field

[0001] Embodiments of this disclosure generally relate to electrical systems, and more particularly to mounting devices for busbars within electrical systems. Background Technology

[0002] Electrical equipment cabinets, such as those for rectifiers, are typically housed in enclosed enclosures containing numerous busbars and electrical components. These enclosures usually include a front door and side and rear walls surrounding it. The front door is openable for user access to and / or maintenance of the equipment, while the side and rear walls are typically fixed. Users can usually only access the busbars and equipment within the sealed enclosure through the front door. During maintenance or refurbishment of the cabinet, some busbars need to be secured together to form electrical circuits. However, the compact internal space and the large number of busbars arranged both horizontally and vertically make busbar installation and / or securing exceptionally difficult. There is a need to further simplify busbar installation. Summary of the Invention

[0003] Embodiments of this disclosure provide a nut device, a fastening device, and an electrical equipment cabinet designed to facilitate the installation of busbars.

[0004] According to a first aspect of this disclosure, a nut device is provided. The nut device includes: a substrate having a first surface and a second surface opposite to the first surface, the first surface being adapted to contact a surface of at least one first object to be secured; and a nut being fixedly disposed on the second surface of the substrate and adapted to receive a bolt to secure a second object to a first object; wherein the substrate further includes at least one hook portion configured to provide support for the nut device prior to the nut being tightened with the bolt.

[0005] In some embodiments, the hook portion may be disposed on the top of the substrate and extend at least partially laterally from the substrate.

[0006] In some embodiments, the hook portion may be shaped such that the shape is configured such that the bolt prevents the substrate from rotating relative to the first object when screwed into the nut.

[0007] In some embodiments, the shape of the hook portion may be configured to match the cross-sectional profile of the first object.

[0008] In some embodiments, the hook portion may include a first extension extending from the substrate in a direction at least perpendicular to the first surface and a second extension extending from the first extension in a direction at least parallel to the first surface.

[0009] In some embodiments, the hook portion may include a substantially rectangular cross-sectional profile.

[0010] In some embodiments, the substrate may include a first region adapted to accommodate the nut, a second region extending from the first region, and a third region extending from the second region, wherein the hook portion is disposed in the third region.

[0011] In some embodiments, the width of the third region may be greater than the width of the first region and the second region, and the third region is provided with at least two hook portions in the width direction.

[0012] In some embodiments, the substrate may further include a reinforcing rib that projects laterally from the substrate in the region where the nut is disposed.

[0013] According to a second aspect of this disclosure, a fastening device is provided. The fastening device includes: a nut device according to any one of the first aspects; and a bolt configured to engage with the nut of the nut device.

[0014] According to a third aspect of this disclosure, an electrical equipment cabinet is provided. The electrical equipment cabinet includes: a housing; at least one first busbar and a second busbar, housed within the housing; and a fastening device according to a second aspect, configured to secure the second busbar to the first busbar within the housing.

[0015] In some embodiments, the electrical equipment may include at least one of a frequency converter and a rectifier.

[0016] According to this disclosure, one or more of the following technical effects can be achieved. The fastening device according to this disclosure simplifies the installation of busbar bolts, especially in confined spaces. Due to the hook-like structure on the base plate, it can be securely fixed in the desired position on the busbar. This design eliminates the need for manual support and ensures the nuts are firmly in place even when operating from the front of the cabinet. The hook-like structure on the nut prevents bolt tilting and ensures the bolt remains stable during tightening, thereby reducing the risk of misalignment and improving the overall safety and efficiency of the installation process. Attached Figure Description

[0017] The above and other objects, features, and advantages of embodiments of the present disclosure will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated in the drawings by way of example and not limitation.

[0018] Figure 1 A general schematic diagram of an electrical equipment cabinet according to an embodiment of the present disclosure is shown from the front, wherein the front door is removed to show the layout inside the electrical equipment cabinet.

[0019] Figure 2 Show Figure 1 The diagram shows a partial sectional view of the electrical equipment cabinet viewed from the lateral side of the electrical equipment.

[0020] Figure 3 Structural details of securing the busbar using a busbar fastening device for an electrical equipment cabinet according to an embodiment of the present disclosure are shown.

[0021] Figure 4 A perspective view of the nut device according to the first embodiment of the present disclosure, viewed from the front.

[0022] Figure 5 A perspective view of the nut device according to the first embodiment of the present disclosure, viewed from the rear.

[0023] Figure 6 A perspective view of the nut device according to a second embodiment of the present disclosure, viewed from the rear.

[0024] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0025] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0026] The term "comprising" and its variations as used herein signify an open-ended inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". Terms such as "upper", "lower", "front", and "rear", indicating placement or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the purpose of describing the principles of this disclosure, and are not intended to indicate or imply that the elements referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting this disclosure.

[0027] Figure 1 This diagram shows an overall schematic view of an electrical equipment cabinet according to an embodiment of the present disclosure, viewed from the front, with the front door removed to show the layout inside the cabinet. The electrical equipment cabinet can be used to house one or more individual electrical devices (not shown), such as frequency converters, rectifiers, etc. Figure 1As shown, the electrical equipment cabinet 1 includes a housing 50, electrical equipment (not shown), and a large number of busbars 40, 70 for circuit connections. The housing 50 may, for example, be in the shape of a cuboid and includes a front wall, opposing side walls, and a rear wall. The front wall may be in the form of an openable and closable door. By opening the door, the busbars and electrical equipment within the housing 50 can be maintained and observed. The busbars 40, 70 can be longitudinal busbars or transverse busbars. Figure 1 As seen in the front view of the busbars shown, there are multiple layers of busbars within the internal space of the housing 50. Figure 2 As shown in the front-to-back sectional view of the electrical equipment cabinet, the electrical equipment is equipped with multi-layer busbars 70 and 30 in the front-to-back direction.

[0028] In many applications, such as Figure 2 As shown, busbar 40 needs to be fixed to busbar 30 to form an electrical circuit. For electrical equipment, busbars need to be reliably and securely fixed. This is because, during the operation of electrical equipment, busbars may vibrate frequently and noisily. In such cases, if the busbar becomes detached or excessively deformed, it will cause a serious safety accident. Generally, bolts and nuts can be used to fix the busbars.

[0029] However, when refurbishing and / or maintaining the cabinet, the numerous busbars arranged in a staggered pattern within the electrical equipment cabinet can make it difficult for users to operate bolts and nuts, especially for the rear busbars. Figure 1 Taking the illustrated application scenario as an example, to secure the rear busbar 30, the user needs to pass their hand through the gap between the front busbars 70 to enter the space containing the rear busbar 30, holding the nut with one hand and operating the bolt with the other to secure it. In particular, when the user tightens the bolt, the nut may rotate, requiring the user to apply force. This is very inconvenient in practice, as the gap between the busbars 70 severely restricts the user's hand movement. In some cases, even if the user manages to secure the busbar, inconsistent force applied to the nut can lead to poor installation consistency and a risk of detachment, posing a significant safety hazard to the electrical equipment cabinet. Furthermore, the installation is highly dependent on the engineer's skill and is time-consuming and labor-intensive.

[0030] According to this disclosure, a nut device is provided that can effectively solve one or more of the above-mentioned problems. The following describes the device in conjunction with... Figures 3-6 The specific structure of the nut device according to embodiments of this disclosure is described in detail. It is worth noting that although embodiments of this disclosure are illustrated using an electrical equipment cabinet as an example, it should be understood that the illustrated scenario is merely exemplary, and the nut device according to this disclosure can also be applied to fixing other components.

[0031] like Figures 3-5 As shown, the nut device 10 may include a substrate 12 and a nut 14. The substrate 12 includes a first surface 122 and a second surface 124 opposite to the first surface 122. The first surface 122 is adapted to contact the surface of at least one first object (e.g., a busbar) to be fixed. The first surface 122 at least partially includes a flat plane, and the platform surface can contact the busbar surface to ensure sufficient contact area. The nut 14 may be fixedly disposed on the second surface 124 of the substrate 12. The nut 14 includes a threaded hole 142, the internal thread of which can engage with the external thread of the bolt 20. The nut 14 may be formed together with the substrate 12 in various ways. In some embodiments, the nut 14 may be integrally formed with the substrate 12, for example, by compression.

[0032] The substrate 12 may also include one or more hook portions 16. The hook portions 16 are configured to provide support for the nut assembly 10 before the nut 14 is fastened together with the bolt 20. The hook portions 16 may be formed in any suitable shape, as long as the hook portions 16 can engage with a portion of the housing and / or busbar 30, thereby providing support for the nut assembly 10 before the nut 14 is fastened together with the bolt 20.

[0033] like Figure 3 As shown, in order to secure the busbar 40 to the busbar 30 located at the rear of the cabinet, the user only needs to hang the busbar assembly including the nut 14 on the busbar 30 using the hook part 16. Therefore, when tightening the bolt 20 to the nut 14, the user does not need to manually hold the nut 14, allowing the user to focus on tightening the bolt 20, simplifying the operation and significantly improving work efficiency.

[0034] In some embodiments, the hook portion 16 is disposed on the top of the base plate 12 and extends at least partially laterally from the base plate 12. This is particularly suitable for placing the nut device 10 from the rear side of the busbar. Considering that when disposed on the rear side of the cabinet, the user can easily determine the position of the base plate 12 via the hook portion at the top.

[0035] The hook portion 16 can be formed in any suitable shape. In some embodiments, the hook portion 16 is formed in a shape configured such that the bolt 20 prevents the substrate 12 from rotating relative to the first object when screwed into the nut 14. In some embodiments, the hook portion 16 includes a first extension 162 extending from the substrate 12 at least in a direction perpendicular to the first surface 122 and a second extension 164 extending from the first extension 162 at least in a direction parallel to the first surface 122. Considering the risk of rotation of the substrate 12 of the nut device 10 during tightening, according to this disclosure, the shape of the hook portion 16 is formed in a suitable shape to prevent the substrate 12 from rotating relative to the busbar. Thus, the surface of the substrate 12 can mate with the surface of the busbar 30, effectively preventing the substrate 12 from rotating. The hook-like structure on the nut prevents the bolt from tilting and ensures that the bolt remains stable during tightening, thereby reducing the risk of misalignment and improving the overall safety and efficiency of the installation process.

[0036] In some embodiments, the shape of the hook portion 16 is configured to match the cross-sectional profile of the busbar. As an example, in the case where the busbar 30 is a rectangular busbar, the hook portion 16 includes a substantially rectangular cross-sectional profile. It should be understood that the shape of the hook portion 16 illustrated is merely exemplary, and other suitable shapes may be selected depending on the shape of the busbar.

[0037] The substrate 12 can be formed into any suitable shape. In some embodiments, such as Figures 3-5 As shown, the substrate 12 may include a first region 121 adapted for arranging nuts 14, a second region 123 extending from the first region 121, and a third region 125 extending from the second region 123, wherein one or more hook portions 16 are disposed in the third region 125. By forming the substrate 12 into this elongated structure, it is particularly suitable for securing multiple busbars 30. Further reference Figure 2 ,exist Figure 2 In the illustrated embodiment, four busbars 30 are fixed together to form a set of busbars. By forming the substrate 12 into the above-described elongated shape, the busbars 40 can be easily fixed to multiple busbars 30.

[0038] In some embodiments, the widths of the multiple regions may be the same or different. In some embodiments, such as Figures 4-5 As shown, the width of the third region 125 can be greater than the width of the first region 121 and the second region 123. The third region 125 has at least two hook portions 16 in the width direction. By increasing the area of ​​the third region 125 and by providing multiple hook portions 16, the self-supporting strength of the substrate 12 can be improved, and the anti-rotation performance can be further improved.

[0039] Figure 6A perspective view of the nut device according to a second embodiment of the present disclosure, viewed from the rear. Figure 6 The illustrated embodiments and Figure 4 The illustrated embodiment is similar, except that the substrate 12 also includes a reinforcing rib 18 that projects laterally from the substrate 12 at the region where the nut 14 is located. The reinforcing rib 18 further enhances the structural strength of the substrate 12. In the illustrated embodiment, the reinforcing rib 18 extends from the side of the substrate 12. It should be understood that this is merely exemplary, and the reinforcing rib can be provided at any other suitable location on the substrate.

[0040] According to this disclosure, a fastening device is also provided. The fastening device includes a nut device 10 as described in this disclosure and a bolt 20 configured to engage with a nut 14 of the nut device 10.

[0041] According to this disclosure, the fastening device pursuant to this disclosure simplifies the installation of busbar bolts, especially in confined spaces. Unlike conventional nuts that require manual support during installation, the base plate features a hook-like structure that securely holds the nut in place at the desired location on the busbar. This design eliminates the need for manual support, ensuring the nut remains in place even when operating from the front of the cabinet. The hook-shaped nut is particularly well-suited to address the challenges of modernizing electrical cabinets, especially in locations where busbars are located at the rear, making them difficult to observe and access. The hook-like structure on the nut prevents bolt tilting and ensures the bolt remains stable during tightening, thereby reducing the risk of misalignment and improving the overall safety and efficiency of the installation process.

[0042] Furthermore, although the operations are described in a specific order, this should be understood as requiring that such operations be performed in the specific order shown or in sequential order, or requiring that all illustrated operations be performed to achieve the desired result. In certain environments, multitasking and parallel processing may be advantageous. Similarly, although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented individually or in any suitable sub-combination in multiple implementations.

[0043] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0044] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A nut device (10), characterized in that, include: A substrate (12) comprising a first surface (122) and a second surface (124) opposite to the first surface (122), the first surface (122) being adapted to contact the surface of at least one first object to be fixed; as well as Nut (14) is fixedly disposed on the second surface (124) of the substrate (12) and adapted to receive bolt (20) to secure the second object to the first object; The base plate (12) further includes at least one hook portion (16) configured to provide support for the nut assembly (10) before the nut (14) is fastened together with the bolt (20).

2. The nut device (10) according to claim 1, characterized in that, The hook portion (16) is disposed on the top of the substrate (12) and extends laterally from the substrate (12) at least partially.

3. The nut device (10) according to claim 1, characterized in that, The hook portion (16) is shaped such that the bolt (20) prevents the base plate (12) from rotating relative to the first object when it is screwed into the nut (14).

4. The nut device (10) according to claim 2 or 3, characterized in that, The shape of the hook portion (16) is configured to match the cross-sectional profile of the first object.

5. The nut device (10) according to any one of claims 1-3, characterized in that, The hook portion (16) includes a first extension (162) extending from the substrate (12) at least in a direction perpendicular to the first surface (122) and a second extension (164) extending from the first extension (162) at least in a direction parallel to the first surface (122).

6. The nut device (10) according to claim 5, characterized in that, The hook portion (16) has a substantially rectangular cross-sectional profile.

7. The nut device (10) according to any one of claims 1-3 and 6, characterized in that, The substrate (12) includes a first region (121) adapted to accommodate the nut (14), a second region (123) extending from the first region (121), and a third region (125) extending from the second region (123), wherein the hook portion (16) is disposed in the third region (125).

8. The nut device (10) according to claim 7, characterized in that, The width of the third region (125) is greater than the width of the first region (121) and the second region (123), and the third region (125) is provided with at least two hook portions (16) in the width direction.

9. The nut device (10) according to any one of claims 1-3, 6, and 8, characterized in that, The substrate (12) also includes a reinforcing rib (18) that protrudes laterally from the substrate (12) in the area where the nut (14) is located.

10. A fastening device, characterized in that, include: The nut device (10) according to any one of claims 1-9; as well as Bolt (20) is configured to engage with nut (14) of nut assembly (10).

11. An electrical equipment cabinet, characterized in that, include: Casing (50); At least one first busbar (30) and a second busbar (40) are housed in the housing (50); as well as The fastening device according to claim 10 is configured to secure the second busbar (40) to the first busbar (30) within the housing (50).

12. The electrical equipment cabinet according to claim 11, characterized in that, The electrical equipment includes at least one of a frequency converter and a rectifier.

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