Multi-dimensional riveting hole, riveting nut and electric appliance box

Abstract

The utility model provides a multidimensional riveting hole, a riveting nut and an electric appliance box, the riveting hole comprises a first group of polygonal holes and a second group of polygonal holes, and the first group of polygonal holes are located above the second group of polygonal holes; each of the first group of polygonal holes and the second group of polygonal holes is provided with N mounting angles, and the mounting angles are the same in size; the first set of polygonal holes and the second set of polygonal holes are arranged in a staggered mode, and the first set of polygonal holes coincide with the second set of polygonal holes after rotating by a first angle. Wherein N is greater than or equal to 2. The two sets of polygonal holes are provided with 2N installation angles in total, the two sets of polygonal holes are combined, the guiding effect on the riveting nut is achieved, the freedom degree of the riveting nut falling into the multi-dimensional riveting hole can be increased, and the riveting nut can rapidly fall into the multi-dimensional riveting hole. According to the multi-dimensional riveting hole, the assembling difficulty of the riveting nut in the riveting process is reduced, the success rate of blind placement of the riveting nut in the riveting hole and the assembling smoothness are increased, the production efficiency is improved, and therefore automatic production can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of riveting device technology, and in particular to a multi-dimensional riveting hole, a riveting nut, and an electrical box. Background Technology

[0002] Most household appliances have an electrical box, which requires a grounding wire for safety reasons. These electrical boxes are typically made of thin steel sheet. The general grounding method involves first riveting a hexagonal nut to the electrical box, and then driving a grounding screw into the hexagonal nut. Traditionally, the riveting hole is hexagonal, matching the shape of the hexagonal nut.

[0003] The existing method of fitting nuts to rivet holes has the following drawbacks: the angle of the nut must be perfectly aligned with the rivet hole for it to be properly positioned; any angular deviation will affect assembly and prevent riveting. In mass production, this strict matching method severely impacts production efficiency and is unsuitable for rapid and automated production.

[0004] Therefore, there is a need for a multi-dimensional riveting hole that can reduce the assembly difficulty of the riveting process, increase the smoothness of the riveting nut being assembled into the riveting hole, and thus improve production efficiency. Utility Model Content

[0005] To overcome the problems existing in related technologies, the purpose of this utility model is to provide a multi-dimensional riveting hole, a riveting nut, and an electrical box. The multi-dimensional riveting hole can reduce the assembly difficulty of the riveting process, increase the smoothness of the riveting nut being assembled into the riveting hole, and thus improve production efficiency.

[0006] A multi-dimensional riveting hole includes a first set of polygonal holes and a second set of polygonal holes, with the first set of polygonal holes located above the second set of polygonal holes; both the first set of polygonal holes and the second set of polygonal holes have N mounting angles, each of which is the same size; the first set of polygonal holes and the second set of polygonal holes are staggered, and the first set of polygonal holes coincides with the second set of polygonal holes after being rotated by a first angle; wherein, N≥2.

[0007] In the preferred embodiment of this utility model, both the first group of polygonal holes and the second group of polygonal holes are annular serrated.

[0008] In a preferred embodiment of this invention, the angle between a mounting angle of the first set of polygonal holes and a mounting angle of the adjacent second set of polygonal holes is a first angle.

[0009] In the preferred embodiment of this utility model, the first angle is 30 degrees.

[0010] In a preferred embodiment of this invention, the number of mounting angles N = 6, and the angle of each mounting angle is 120 degrees.

[0011] A riveting nut adapted to multi-dimensional riveting holes, the riveting nut comprising a head, a middle portion and a bottom portion, the two sides of the middle portion being connected to the head and the bottom portion respectively, the riveting nut being deformable; the cross-section of the middle portion along the height direction is an N-sided polygon, and the outer side of the middle portion is engaged in the first set of polygonal holes or the second set of polygonal holes.

[0012] In a preferred embodiment of this invention, the middle part is a columnar structure, and a deformable part is provided on the side of the middle part near the bottom. The deformable part is N-sided and deforms during the axial assembly into the multi-dimensional riveting hole.

[0013] In a preferred embodiment of this invention, the head has a gradient structure, with the radial dimension gradually decreasing from one end near the center to the other end away from the center, and the cross-section of the head along the axial direction is circular.

[0014] In a preferred embodiment of this invention, the bottom is a disc-shaped structure, and the projection of the bottom along the axial direction covers the multi-dimensional riveting hole. A clamping area is formed between the deformed part and the bottom. The clamping area is used to clamp the multi-dimensional riveting hole to radially fix the multi-dimensional riveting hole.

[0015] An electrical box has multi-dimensional riveting holes, and riveting nuts are installed in the multi-dimensional riveting holes.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention provides a multi-dimensional riveting hole, including a first set of polygonal holes and a second set of polygonal holes, with the first set of polygonal holes located above the second set of polygonal holes. Both the first and second sets of polygonal holes have N mounting angles, each of the same size. The first and second sets of polygonal holes are staggered, with the first set of polygonal holes coinciding with the second set of polygonal holes after rotating by a first angle; where N ≥ 2. The staggered arrangement of the first and second sets of polygonal holes means that the angle between one mounting angle of the first set of polygonal holes and the mounting angle of the adjacent second set of polygonal holes is the first angle. That is, after rotating clockwise or counterclockwise by the first angle, the first and second sets of polygonal holes coincide vertically. The two sets of polygonal holes have a total of 2N mounting angles, which, combined with the first and second sets of polygonal holes, guide the riveting nut, increasing the degree of freedom for the nut to fall into the multi-dimensional riveting hole, thus enabling the nut to quickly fall into the multi-dimensional riveting hole. Compared to traditional rivet holes and rivet screws that require precise alignment to fit the screws into the rivet holes, the multi-dimensional rivet holes of this invention reduce the assembly difficulty of the rivet nut riveting process, increase the success rate of blindly placing the rivet nut into the rivet hole and improve the smoothness of assembly, thereby improving production efficiency and enabling automated production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the multi-dimensional riveting hole of this utility model;

[0019] Figure 2 This is a contour diagram of the multi-dimensional riveting hole with twelve mounting angles of this utility model;

[0020] Figure 3 This is a front view of the electrical box of this utility model;

[0021] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0023] Figure 6 This is a side view of the electrical box of this utility model;

[0024] Figure 7 This is a top view of the electrical box of this utility model;

[0025] Figure 8 This is a schematic diagram of a rivet hole in existing technology.

[0026] Reference numerals: 1. Multi-dimensional riveting hole; 2. First group of polygonal holes; 3. Second group of polygonal holes; 4. Mounting angle; 5. Riveting nut; 6. Head; 7. Middle; 8. Bottom; 9. Deformation part; 10. Clamping area; 11. Electrical box. Detailed Implementation

[0027] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention 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 invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0028] Example 1

[0029] like Figures 1-2 As shown, this embodiment provides a multi-dimensional riveting hole, including a first group of polygonal holes 2 and a second group of polygonal holes 3, with the first group of polygonal holes 2 located above the second group of polygonal holes 3; both the first group of polygonal holes 2 and the second group of polygonal holes 3 have N mounting angles 4, and each mounting angle 4 is the same size; the first group of polygonal holes 2 and the second group of polygonal holes 3 are staggered, and after the first group of polygonal holes 2 is rotated by a first angle, it coincides with the second group of polygonal holes 3; wherein, N≥2.

[0030] This embodiment takes the example where both the first group of polygonal holes and the second group of polygonal holes have six mounting corners, meaning that both the first group of polygonal holes and the second group of polygonal holes are equilateral hexagons. The first group of polygonal holes has six sides, and each mounting corner is the same size.

[0031] The first set of polygonal holes at the top and the second set of polygonal holes at the bottom combine to form a dodecagonal riveting hole. For the first set of polygonal holes, the included angle between adjacent mounting angles is 60 degrees. For the second set of polygonal holes, the included angle between adjacent mounting angles is 60 degrees.

[0032] During each riveting operation, a random set of hexagonal holes mates with the six corners of the rivet nut. Compared to traditional hexagonal riveting holes, which require each hexagonal nut to mate individually, this method makes assembly much easier. Even when the rivet nut is blindly inserted into the multi-dimensional riveting holes, it slides freely under gravity, increasing the probability of successful assembly by 50%. The additional set of hexagonal holes in this invention's multi-dimensional riveting holes increases the probability of the hexagonal nut entering the riveting hole, improving both the riveting success rate and efficiency.

[0033] This embodiment provides a multi-dimensional riveting hole, including a first set of polygonal holes and a second set of polygonal holes, with the first set of polygonal holes located above the second set of polygonal holes. Both the first and second sets of polygonal holes have N mounting angles, each of the same size. The first and second sets of polygonal holes are staggered, with the first set of polygonal holes coinciding with the second set of polygonal holes after rotating by a first angle; where N ≥ 2. The staggered arrangement of the first and second sets of polygonal holes means that the angle between one mounting angle of the first set of polygonal holes and the mounting angle of the adjacent second set of polygonal holes is the first angle. That is, after rotating clockwise or counterclockwise by the first angle, the first and second sets of polygonal holes coincide vertically. The two sets of polygonal holes have a total of 2N mounting angles, which, combined with the first and second sets of polygonal holes, guide the riveting nut, increasing the degree of freedom for the nut to fall into the multi-dimensional riveting hole, thus enabling the nut to quickly fall into the multi-dimensional riveting hole. Compared to traditional rivet holes and rivet screws that require precise alignment to fit the screws into the rivet holes, the multi-dimensional rivet holes of this invention reduce the assembly difficulty of the rivet nut riveting process, increase the success rate of blindly placing the rivet nut into the rivet hole and improve the smoothness of assembly, thereby improving production efficiency and enabling automated production.

[0034] Example 2

[0035] like Figures 1-2 As shown, this embodiment provides a multi-dimensional riveting hole, including a first group of polygonal holes 2 and a second group of polygonal holes 3, with the first group of polygonal holes 2 located above the second group of polygonal holes 3; both the first group of polygonal holes 2 and the second group of polygonal holes 3 have N mounting angles 4, and each mounting angle 4 is the same size; the first group of polygonal holes 2 and the second group of polygonal holes 3 are staggered, and after the first group of polygonal holes 2 is rotated by a first angle, it coincides with the second group of polygonal holes 3; wherein, N≥2.

[0036] Both the first set of polygonal holes 2 and the second set of polygonal holes 3 are annular serrated. The included angle between a mounting angle 4 of the first set of polygonal holes 2 and a mounting angle 4 of the adjacent second set of polygonal holes 3 is the first angle.

[0037] The first angle is 30 degrees, the number of mounting angles 4 is N=6, and the angle of the mounting angle 4 is 120 degrees.

[0038] The first set of polygonal holes 2 and the second set of polygonal holes 3 form a dodecagonal hole, which is in the shape of a ring sawtooth. The ring sawtooth structure can better lock the rivet nut 5. The rivet nut 5 is made of deformable material. During the riveting process, the material of the rivet nut 5 deforms and flows into the sawtooth of the multidimensional riveting hole 1 until the rivet nut 5 fills the sawtooth of the multidimensional riveting hole 1.

[0039] The multi-dimensional riveting hole 1 of this utility model has two sets of polygonal holes, totaling twelve polygonal holes. These twelve polygonal holes are evenly distributed on the same circumference, ensuring uniform force distribution during the insertion of the riveting nut 5 into the multi-dimensional riveting hole 1. The dimensions of the multi-dimensional riveting hole 1 vary depending on the specifications of the riveting nut 5. For example, the outer contour of the twelve polygonal riveting hole that mates with an M4 hexagonal riveting nut 5 is on a circumference with a diameter of φ7. The included angle between any two adjacent corners of the twelve polygonal riveting hole is 30°, and the angle of each corner itself is 120°. The design and processing of the riveting hole are crucial to the riveting quality; a reasonable hole diameter and processing precision can guarantee the strength and reliability of the riveting.

[0040] like Figure 8 As shown, the assembly of hexagonal nuts and hexagonal screw holes requires high precision. In actual production, the hexagonal nuts often fail to fall into the hexagonal screw holes automatically, causing the nuts to get stuck. In severe cases, this can cause the mold to break, leading to increased costs and reduced production efficiency.

[0041] In this embodiment, both the first set of polygonal holes 2 and the second set of polygonal holes 3 are annular serrated. The included angle between an installation angle 4 of the first set of polygonal holes 2 and an adjacent installation angle 4 of the second set of polygonal holes 3 is a first angle. The first set of polygonal holes 2 and the second set of polygonal holes 3 form a dodecagonal hole, which is annularly serrated. The annular serrated structure can better lock the rivet nut 5. The rivet nut 5 is made of a deformable material. During the riveting process, the material of the rivet nut 5 deforms and flows into the serrations of the multi-dimensional riveting hole 1 until the rivet nut 5 fills the serrations of the multi-dimensional riveting hole 1.

[0042] Example 3

[0043] like Figures 3-7 As shown, this embodiment provides a riveting nut 5, which is adapted to the multi-dimensional riveting hole 1 in Embodiments 1 and 2. The riveting nut 5 includes a head 6, a middle part 7 and a bottom 8. The two sides of the middle part 7 are connected to the head 6 and the bottom 8 respectively. The riveting nut 5 is deformable. The cross-section of the middle part 7 along the height direction is an N-sided shape. The outer side of the middle part 7 is engaged in the first set of polygonal holes 2 or the second set of polygonal holes 3.

[0044] The rivet nut 5 is made of a deformable material. During the riveting process, the material of the rivet nut 5 deforms and flows into the multi-dimensional riveting hole 1 until the rivet nut 5 fills the multi-dimensional riveting hole 1. Setting two sets of polygonal holes can increase the probability of the rivet nut 5 entering the riveting hole, thereby improving the riveting success rate and riveting efficiency.

[0045] This embodiment uses a hexagonal nut (5) and a dodecagonal riveting hole as an example. During production, an automatic nut feeding mechanism or manual feeding is used to insert the hexagonal nut from the head (6) downwards into the dodecagonal riveting hole. The middle section (7) of the hexagonal nut has a hexagonal cross-section. The dodecagonal riveting hole increases the matching success rate between the hexagonal nut and the riveting hole; compared to a hexagonal nut hole, the matching success rate of the dodecagonal riveting hole in this embodiment is increased by 50%.

[0046] The edge of the dodecagonal riveting hole interlocks with the outer side of the rivet nut 5, providing axial fixation for the rivet nut 5. The middle part 7 of the rivet nut 5, near the bottom 8, clamps the dodecagonal riveting hole between itself and the bottom 8, providing radial fixation for the rivet nut 5. The dodecagonal riveting hole is formed on the electrical box 11, thereby fixing the rivet nut 5 and the electrical box 11 together in both radial and axial directions.

[0047] The thickness of the base material of the electrical box 11 can be selected from 0.5-3.0mm depending on the specifications of the rivet nut 5. The base material of the electrical box 11 is made of carbon steel or stainless steel. Preferably, the assembly gap between the rivet nut 5 and the dodecagonal rivet hole is 0.05mm, and the machining burr requirement of the dodecagonal rivet hole is not higher than 0.1mm.

[0048] In this embodiment, the riveting hole is changed from a hexagonal hole to a dodecagonal hole, the shape of the riveting nut 5 remains unchanged, and the degree of deformation of the riveting nut 5 depends on the axial compression stroke and is independent of the shape of the riveting hole.

[0049] like Figure 3 As shown, the substrate of the electrical box 11 is provided with one or more multi-dimensional riveting holes 1, and the riveting nut 5 is inserted into the multi-dimensional riveting hole 1. Figure 4 The rivet nut 5 in the middle did not deform. Figure 5 The rivet nut 5 in the rivet nut 5 underwent deformation. Before deformation, the head 6 of the rivet nut 5 was round, and the middle part 7 transitioned from round to hexagonal to facilitate the insertion of the rivet nut 5 into the multi-dimensional riveting hole 1. This utility model changes the hexagonal screw hole in the prior art to a dodecagonal riveting hole, while the shape of the rivet nut 5 remains unchanged. In addition, since the degree of deformation at various points of the rivet nut 5 depends on the axial compression stroke and is independent of the shape of the riveting hole, the deformation at various points of the rivet nut 5 remains unchanged.

[0050] Electrical boxes 11 can be categorized by application into household appliance boxes, industrial appliance boxes, and automotive appliance boxes. Household appliance boxes are used for power distribution and protection in home circuits and are commonly found in wall and ceiling locations. Industrial appliance boxes are used for electrical control and protection of industrial equipment and typically have a higher protection rating. Automotive appliance boxes are used in the electrical systems inside vehicles and have functions such as centralized power distribution management and relay control. Selecting the appropriate electrical box 11 according to needs can improve the safety and reliability of electrical equipment.

[0051] A hexagonal nut is a threaded fastener, typically used in conjunction with bolts or screws to connect and secure multiple parts. Common hexagonal nuts are classified into Type I and Type II. Type I hexagonal nuts are the most widely used and are further divided into three grades: A, B, and C. Grades A and B are suitable for applications requiring high precision, while grade C is used for applications with lower precision requirements. Type II hexagonal nuts are thicker and are often used in applications requiring frequent disassembly and assembly. Hexagonal nuts are made from a variety of materials, including carbon steel, alloy steel, and stainless steel. Among them, 304 stainless steel hexagonal nuts are widely used in the automotive, construction, and electrical industries due to their excellent corrosion resistance and good mechanical properties.

[0052] This embodiment provides a riveting nut 5 adapted to a multi-dimensional riveting hole 1. The riveting nut 5 includes a head 6, a middle part 7, and a bottom 8. The two sides of the middle part 7 are connected to the head 6 and the bottom 8, respectively. The riveting nut 5 is deformable. The cross-section of the middle part 7 along the height direction is an N-sided polygon. The outer side of the middle part 7 is engaged in the first set of polygonal holes 2 or the second set of polygonal holes 3. The angles of the riveting nut 5, the mounting angles 4 of the first set of polygonal holes 2, and the mounting angles 4 of the second set of polygonal holes 3 are all 120°, facilitating the riveting nut 5 to fall into the multi-dimensional riveting hole 1. The twelve mounting angles 4 are evenly distributed on the same circumference, and the included angle between adjacent mounting angles 4 is 30°. The rivet nut 5 is compatible with both the first set of polygonal holes 2 and the second set of polygonal holes 3. When one of the polygonal holes is rotated 30° clockwise or counterclockwise, the first set of polygonal holes 2 and the second set of polygonal holes 3 overlap, facilitating the rivet nut 5 to fall into the multi-dimensional riveting hole 1. During each riveting process, the rivet nut 5 randomly mates with one set of polygonal holes, either with the first set of polygonal holes 2 or with the second set of polygonal holes 3. Even when the rivet nut 5 is blindly placed into the riveting hole, it slides freely under gravity, increasing the probability of successful assembly by 50%.

[0053] Example 4

[0054] like Figures 3-7 As shown, this embodiment provides a riveting nut 5, which is adapted to the multi-dimensional riveting hole 1 in Embodiments 1 and 2. The riveting nut 5 includes a head 6, a middle part 7 and a bottom 8. The two sides of the middle part 7 are connected to the head 6 and the bottom 8 respectively. The riveting nut 5 is deformable. The cross-section of the middle part 7 along the height direction is an N-sided shape. The outer side of the middle part 7 is engaged in the first set of polygonal holes 2 or the second set of polygonal holes 3.

[0055] The middle part 7 is a columnar structure, and a deformable part 9 is provided on the side of the middle part 7 near the bottom 8. The deformable part 9 is N-sided and deforms during the axial assembly into the multi-dimensional riveting hole 1.

[0056] The head 6 has a gradient structure, and the radial dimension of the head 6 gradually decreases from one end near the middle part 7 to the end away from the middle part 7. The cross-section of the head 6 along the axial direction is circular.

[0057] The bottom 8 is a disc-shaped structure, and the projection of the bottom 8 along the axial direction covers the multi-dimensional riveting hole 1. A clamping area 10 is formed between the deformable part 9 and the bottom 8. The clamping area 10 is used to clamp the multi-dimensional riveting hole 1 to radially fix the multi-dimensional riveting hole 1.

[0058] In this embodiment, the rivet nut 5 is a hexagonal nut, i.e., N=6. The bottom 8 of the hexagonal nut has a disc-shaped structure, and the cross-section of the bottom 8 along the height direction is circular. The projection of the bottom 8 covers the rivet hole. The hexagonal part of the middle part 7 is the deformable part 9. After the deformable part 9 is deformed, its projection covers the rivet hole. The deformable part 9 and the bottom 8 sandwich the rivet hole on the electrical box 11 substrate in the middle, which serves to radially fix the rivet nut 5. The multi-dimensional rivet hole 1 is a dodecagonal rivet hole. The edge of the dodecagonal rivet hole interlocks with the rivet nut 5, which serves to axially fix the rivet nut 5, thereby fixing the rivet nut 5 to the electrical box 11 in both radial and axial directions.

[0059] The two ends of the middle part 7 of the rivet nut 5 are connected to the head 6 and the bottom 8 respectively, or the head 6, the middle part 7 and the bottom 8 are integrally formed. The head 6 of the rivet nut 5 has a gradient structure, with the radial dimension being the largest at the end of the head 6 closer to the middle part 7 and the radial dimension being the smallest at the end of the head 6 further away from the middle part 7.

[0060] During the production process, an automatic nut feeding mechanism or manual feeding is used to feed the hexagonal nut from the head 6 downwards into the multi-dimensional riveting hole 1. The cross-section of the middle part 7 of the hexagonal nut is hexagonal. The dodecagonal riveting hole increases the matching degree between the nut and the riveting hole. Compared with the hexagonal riveting hole, the matching degree is increased by 50%.

[0061] In this embodiment, the middle portion 7 is a columnar structure. A deformable portion 9, which is N-sided, is provided on the side of the middle portion 7 near the bottom 8. The deformable portion 9 deforms during axial assembly into the multi-dimensional riveting hole 1. The head 6 has a gradient structure, with its radial dimension gradually decreasing from one end near the middle portion 7 to the other. The cross-section of the head 6 along the axial direction is circular. The bottom 8 is a disc-shaped structure, and its axial projection covers the multi-dimensional riveting hole 1. A clamping area 10 is formed between the deformable portion 9 and the bottom 8; the clamping area 10 is used to clamp the multi-dimensional riveting hole 1 for radial fixation. The hexagonal portion of the middle portion 7 is the deformable portion 9. After deformation, the projection of the deformable portion 9 covers the riveting hole. The deformable portion 9 and the bottom 8 clamp the riveting hole on the electrical box 11 substrate, thus radially fixing the riveting nut 5. The multi-dimensional riveting hole 1 is a dodecagonal riveting hole. The edge of the dodecagonal riveting hole is locked and fixed to the riveting nut 5, which serves to fix the riveting nut 5 axially, thereby fixing the riveting nut 5 to the electrical box 11 in both radial and axial directions.

[0062] Example 5

[0063] like Figures 3-7 As shown, this embodiment provides an electrical box 11 with multi-dimensional riveting holes 1, in which riveting nuts 5 are assembled. One or more multi-dimensional riveting holes 1 are provided on the electrical box 11 as needed. One or more dodecagonal riveting holes are machined on the sheet metal substrate of the electrical box 11 using CNC machine tool stamping, die stamping, and laser cutting processes. Hexagonal nuts are assembled into the dodecagonal riveting holes using an automatic nut feeding mechanism or manual feeding. The deformable portion 9 of the riveting nut 5 is deformed by die pressing or riveting with a riveting gun, thus fixing the riveting nut 5 to the substrate of the electrical box 11.

[0064] According to the specifications of the rivet nut 5, the thickness of the base material of the electrical box 11 ranges from 0.5 to 3.0 mm, and the base material of the electrical box 11 is made of carbon steel or stainless steel. Preferably, the assembly gap between the multi-dimensional riveting hole 1 and the rivet nut 5 is 0.05 mm, and the machining burr requirement for the multi-dimensional riveting hole 1 is not higher than 0.1 mm.

[0065] In this embodiment, the electrical box 11 has multi-dimensional riveting holes 1, and a riveting nut 5 is installed in each of the multi-dimensional riveting holes 1. The electrical box 11 is generally made of thin steel plate and needs to be grounded. In this embodiment, the electrical box 11 has one or more multi-dimensional riveting holes 1. The riveting nut 5 is riveted into the multi-dimensional riveting hole 1, and finally a grounding screw is driven into the riveting nut 5 to ground the electrical box 11, thereby improving the safety of the electrical box 11 and preventing the user from being electrocuted during the use of the electrical box 11.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0067] It should be understood that spatial relative terms are intended to encompass different orientations of a device in use or operation, in addition to the orientation described in the figures. For example, if a device in the figures is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0069] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-dimensional riveting hole, characterized in that, It includes a first group of polygonal holes and a second group of polygonal holes, with the first group of polygonal holes located above the second group of polygonal holes; both the first group of polygonal holes and the second group of polygonal holes have N mounting angles, and each mounting angle is the same size; the first group of polygonal holes and the second group of polygonal holes are staggered, and after the first group of polygonal holes is rotated by a first angle, it coincides with the second group of polygonal holes; wherein, N≥2.

2. The multi-dimensional riveting hole according to claim 1, characterized in that, Both the first group of polygonal holes and the second group of polygonal holes are annular serrated.

3. The multi-dimensional riveting hole according to claim 1, characterized in that, The angle between a mounting angle of the first set of polygonal holes and a mounting angle of the adjacent second set of polygonal holes is the first angle.

4. The multi-dimensional riveting hole according to claim 1, characterized in that, The first angle is 30 degrees.

5. The multi-dimensional riveting hole according to claim 1, characterized in that, The number of mounting angles is N = 6, and the angle of each mounting angle is 120 degrees.

6. A riveting nut, characterized in that, The rivet nut is adapted to the multi-dimensional riveting hole according to any one of claims 1-5. It includes a head, a middle part and a bottom part, with the two sides of the middle part connected to the head and the bottom part respectively. The rivet nut is deformable. The cross-section of the middle part along the height direction is an N-sided shape. The outer side of the middle part is engaged in the first set of polygonal holes or the second set of polygonal holes.

7. The riveting nut according to claim 6, characterized in that, The middle part is a columnar structure, and a deformable part is provided on the side of the middle part near the bottom. The deformable part is N-sided and deforms during the process of axially assembling into the multi-dimensional riveting hole.

8. The riveting nut according to claim 6, characterized in that, The head has a gradient structure, with its radial dimension gradually decreasing from one end near the center to the other end away from the center, and its axial cross-section is circular.

9. The riveting nut according to claim 7, characterized in that, The bottom has a disc-shaped structure, and the projection of the bottom along the axial direction covers the multi-dimensional riveting hole. A clamping area is formed between the deformed part and the bottom. The clamping area is used to clamp the multi-dimensional riveting hole to radially fix the multi-dimensional riveting hole.

10. An electrical appliance box, characterized in that, The device has a multi-dimensional riveting hole as described in any one of claims 1-5, and a riveting nut as described in any one of claims 6-9 is fitted inside the multi-dimensional riveting hole.

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