Nut mounting structure for shell and display module
Through the nut installation structure of the injection molded shell and the clamp, the problem of high installation cost in the prior art is solved, efficient and convenient nut fixation is achieved, manufacturing costs are reduced and product service life is improved.
Patent Information
- Application Number
- CN202421181461.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing nut and shell fixing methods have high cost problems, including adding operational processes and working hours in injection molding production, affecting continuity, increasing production costs, and requiring additional screw components and screwing operations, resulting in high manufacturing costs.
The nut installation structure is adopted for the injection molding shell and the clamp. The clamp is injection molded together with the injection molding shell. The metal nut is fixed through the recessed part and the clamp fitting, avoiding the process of putting the nut in the injection mold and reducing the Production costs are achieved and installation stability and convenience are improved through non-circular or polygonal designs.
It improves the yield rate and assembly consistency of the injection molded shell, reduces the manufacturing cost of the nut installation structure, simplifies the assembly process, improves production efficiency, and allows for convenient replacement of metal nuts, extending the service life of the product.
Smart Images
Figure CN222296681U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connection structures, in particular to a nut installation structure for a shell and a display module. Background Art
[0002] Please combine Figure 1 and Figure 2 The LED display screen module includes a plastic bottom shell 10, and the plastic bottom shell 10 uses a copper nut 20 as a force-bearing member when fixing. Generally, there are two main ways to fix the copper nut 20 on the plastic bottom shell 10: Figure 1 One way is to use the copper nut 20 as an insert and to form an integral part with the plastic bottom shell 10 by injection molding. Another way is to use a screw to fix the copper nut 20 in the screw hole 11 of the plastic bottom shell 10 (see Figure 2 ). However, the former method requires the copper nut 20 to be placed in the mold first during the injection molding of the plastic bottom shell 10, which increases the operation process and working hours, affects the continuity of injection molding production, and increases the production cost. The latter method requires the addition of screw components and requires the screwing operation, which increases the installation cost. Therefore, the existing method of fixing the nut to the shell has a technical problem of high cost. Utility Model Content
[0003] The utility model aims to provide a nut installation structure and a display module for a housing, aiming to solve the technical problem of high cost when the existing nut is installed on the housing.
[0004] In the first aspect, the present application provides a nut mounting structure for a shell, wherein the nut mounting structure for the shell comprises an injection molded shell, a clamping block and a metal nut, wherein the injection molded shell has a mounting hole, the clamping block and the injection molded shell are integrally injection molded, one end of the clamping block is connected to the side wall of the mounting hole, one end of the clamping block extends into the mounting hole, the side of the metal nut abuts against the hole wall of the mounting hole, the side of the metal nut has a recessed portion, the metal nut can be accommodated in the mounting hole, and the clamping block is embedded in the recessed portion.
[0005] In one embodiment, the side surface of the blocking block close to the opening of the mounting hole has a first guiding bevel, and the first guiding bevel is arranged gradually away from the opening of the mounting hole in a direction away from the side wall of the mounting hole; and / or, one side end surface of the metal nut has a second guiding bevel, and the second guiding bevel is arranged gradually outward toward the other side end surface of the metal nut.
[0006] In one of the embodiments, a notch is provided on the side wall of the mounting hole, a cantilever is integrally formed on the side wall of the notch, and a terminal end of the cantilever is integrally formed with the clamping block.
[0007] In one embodiment, the notch penetrates the injection-molded housing along a radial direction of the mounting hole.
[0008] In one embodiment, the inner contour of the mounting hole is non-circular, and / or the outer contour of the metal nut is non-circular.
[0009] In one of the embodiments, the inner contour of the mounting hole is a polygon, the outer contour of the metal nut is a polygon, and the inner contour of the mounting hole and the outer contour of the metal nut are in close contact with each other.
[0010] In one embodiment, the recessed portion is arranged to extend along the circumference of the metal nut.
[0011] In one of the embodiments, the length of the block protruding from the side wall of the mounting hole is 1 / 10 to 1 / 3 of the hole diameter of the mounting hole.
[0012] In one embodiment, the height of the metal nut is less than or equal to the depth of the mounting hole.
[0013] In one embodiment, the injection-molded housing and the card block are integrally injection-molded.
[0014] In a second aspect, the present application provides a display module, comprising any one of the above-mentioned nut mounting structures for a housing.
[0015] The nut mounting structure and display module for the shell provided by the utility model have the following beneficial effects: the injection molded shell and the metal nut are molded separately, which avoids adding the process of placing the metal nut into the injection mold and affecting the injection molding quality, and is beneficial to improving the yield rate of the injection molded shell; the clamping block and the injection molded shell are both made of plastic, and the yield rate of the integral injection molding is high, and the assembly position consistency is high. The clamping block and the injection molded shell are injection molded at the same time, and can be continuously and stably output, which is beneficial to improving production efficiency; the metal nut is stably installed in the mounting hole through the embedded cooperation of its recessed portion and the clamping block, the mounting hole does not need to be tapped, and the metal nut does not need to be screwed into the mounting hole, and the assembly is convenient and efficient; if the metal nut is lost in the mounting hole, a new metal nut can be reinstalled, which is beneficial to maintenance, and there is no need to scrap the entire injection molded shell, which solves the technical problem of high cost when the existing nut is installed on the shell, thereby reducing the manufacturing cost of the nut mounting structure and improving the yield rate of the nut mounting structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 It is a schematic diagram of assembling a plastic bottom shell and a copper nut in the prior art;
[0018] Figure 2 It is another schematic diagram of assembling the plastic bottom shell and the copper nut in the prior art;
[0019] Figure 3 It is a schematic diagram of a nut mounting structure for a housing in an embodiment of the utility model;
[0020] Figure 4 for Figure 3 A local enlarged view of point A in FIG.
[0021] Figure 5 It is a cross-sectional view of a nut mounting structure for a housing in an embodiment of the utility model;
[0022] Figure 6 It is a structural schematic diagram of an injection molded housing of a nut mounting structure for a housing in an embodiment of the utility model;
[0023] Figure 7 It is a structural schematic diagram of a metal nut used in a nut mounting structure of a housing in an embodiment of the utility model;
[0024] Figure 8 An exploded view of a nut mounting structure for a housing in an embodiment of the utility model;
[0025] Fig. 9 It is a schematic assembly diagram of a nut mounting structure for a housing in an embodiment of the utility model.
[0026] Among them, the reference numerals in the figure are:
[0027] 10. Plastic bottom shell; 11. Threaded hole; 20. Copper nut;
[0028] 100, injection molded housing; 101, mounting hole; 102, notch; 103, cantilever;
[0029] 200, a card block; 201, a first guide slope;
[0030] 300, metal nut; 301, recessed portion; 302, second guide slope. DETAILED DESCRIPTION
[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0032] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.
[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0036] Please combine Figure 1 and Figure 2 The LED display screen module includes a plastic bottom shell 10, and the plastic bottom shell 10 uses a copper nut 20 as a force-bearing member when being fixed.
[0037] Combination Figure 1In one assembly method of the copper nut 20 and the plastic bottom shell 10, the copper nut 20 is used as an insert and is integrally injection molded with the plastic bottom shell 10. Specifically, when the plastic bottom shell 10 is injection molded, the copper nut 20 needs to be placed in the injection mold first, and the placement requires additional working hours. Placing the copper nut 20 into the mold will interrupt the injection molding production and affect the continuity of the injection molding production. At the same time, when placing the copper nut 20 into the mold, the copper nut 20 may not be installed in place, and the mold will be damaged when the mold is closed. If the number of copper nuts 20 placed in the mold is insufficient, the plastic bottom shell that is injection molded is waste and cannot be maintained later. Since the copper nut 20 and the plastic bottom shell 10 are made of different materials and have different thermal expansion coefficients, the plastic bottom shell 10 is secondary injection molded on the copper nut 20. The two are in close contact, and there is no redundant gap space for expansion. They are prone to cracking after long-term use, which reduces the service life of the product.
[0038] Combination Figure 2 In another assembly method of the copper nut 20 and the plastic bottom shell 10, the plastic bottom shell 10 is provided with a threaded hole 11, and the copper nut 20 is fixed to the threaded hole 11 of the plastic bottom shell 10 with a screw. Since screws are required for assembly, the cost is increased. At the same time, the copper nut 20 is fixed to the plastic bottom shell 10 with screws, which consumes the man-hours of screwing, increasing the cost. If the screw is not installed in place or is loose, the fixing function of the copper nut 20 is invalid, which reduces the yield rate.
[0039] Therefore, there is a technical problem of high cost in assembling the copper nut 20 and the plastic bottom shell 10 in the prior art. There may also be labor hours generated by placing the copper nut 20 into the mold, damage to the mold due to the copper nut 20 not being properly installed in the mold, intermittent production of the plastic bottom shell 10 due to the installation of the copper nut 20, scrapping of the plastic bottom shell 10 after injection molding due to the lack of the copper nut 20, cracking of the copper nut 20 and the plastic bottom shell 10 due to different thermal expansion coefficients, and manufacturing costs generated by fixing the copper nut 20 to the plastic bottom shell 10 with screws.
[0040] Embodiment 1
[0041] Combination Figure 3 , Figure 4 and Figure 5 The present application provides a nut mounting structure for a housing. The nut mounting structure for a housing includes an injection molded housing 100, a clamping block 200 and a metal nut 300. The injection molded housing 100 has a mounting hole 101. The clamping block 200 and the injection molded housing 100 are integrally formed. One end of the clamping block 200 is connected to the side wall of the mounting hole 101, and one end of the clamping block 200 extends into the mounting hole 101. The side of the metal nut 300 abuts against the hole wall of the mounting hole 101. The side of the metal nut 300 has a recessed portion 301. The metal nut 300 can be accommodated in the mounting hole 101, and the clamping block 200 is embedded in the recessed portion 301.
[0042] In this embodiment, combined with Figure 8 The injection molded housing 100 and the metal nut 300 are molded separately, avoiding the need to add a process of placing the metal nut 300 into the injection mold and affecting the quality of injection molding, which is beneficial to improving the yield rate of the injection molded housing 100. The block 200 and the injection molded housing 100 are both made of plastic, and the integral injection molding yield rate is high, and the assembly position consistency is high. The block 200 and the injection molded housing 100 are molded at the same time, which can be continuously and stably output, which is beneficial to improving production efficiency. Please refer to Fig. 9 The metal nut 300 is stably installed in the mounting hole 101 through the embedded cooperation of its recessed portion 301 and the clamping block 200. The mounting hole 101 does not need to be tapped, and the metal nut 300 does not need to be screwed into the mounting hole 101, so the assembly is convenient and efficient. If the metal nut 300 is lost in the mounting hole 101, a new metal nut 300 can be reinstalled, which is convenient for maintenance without scrapping the entire injection molded housing 100, solving the technical problem of the high cost of installing the existing nut on the housing, thereby reducing the manufacturing cost of the nut installation structure and improving the yield rate of the nut installation structure.
[0043] Specifically, the nut installation structure provided in the present application has the following advantages: first, during the injection molding process of the injection molding shell 100, there is no need to put the metal nut 300 into the mold to generate working hours, and the injection molding production efficiency is improved; second, during the injection molding process of the injection molding shell 100, since there is no need to put the metal nut 300 into the mold, the injection molding production is continuous and stable, and the production can be automated, and the quality is more guaranteed; third, during the injection molding process of the injection molding shell 100, there is no need to put the metal nut 300 into the mold, which avoids the problem of mold damage caused by the metal nut 300; fourth, the metal nut 300 can be installed by simply pressing it into the injection molding shell 100. Compared with fixing the metal nut 300 with screws, the operating efficiency is improved by three times. For example, the assembly time of pressing the metal copper nut is 2 seconds, and the time of fixing the metal nut 300 with screws is 6 seconds; fifth, the injection molding shell 100 and the metal nut 300 are fixed by snap-fitting, and no additional screws are required, which reduces costs.
[0044] In some embodiments, in combination Figure 4 and Figure 5 The side of the block 200 close to the opening of the mounting hole 101 has a first guiding slope 201, and the first guiding slope 201 is gradually away from the opening of the mounting hole 101 in a direction away from the side wall of the mounting hole 101. The design of the first guiding slope 201 allows the metal nut 300 to be gradually approached to the block 200 along the inclined direction of the first guiding slope 201 when the metal nut 300 is pressed into the mounting hole 101, thereby reducing the assembly force, reducing the resistance during the assembly process, and making the assembly process smoother.
[0045] In addition, if the metal nut 300 and the mounting hole 101 are too tightly matched, the metal nut 300 may get stuck during the assembly process. The design of the first guide slope 201 can provide a gradual transition assembly process, which is conducive to reducing the manufacturing accuracy of the metal nut 300 and the mounting hole 101.
[0046] Generally, the metal nut 300 is loosely matched with the mounting hole 101 .
[0047] In some embodiments, in combination Figure 5 The metal nut 300 has a second guiding bevel 302 on one end face, and the second guiding bevel 302 is gradually arranged outwardly toward the other end face of the metal nut 300. When the metal nut 300 needs to be pressed into the mounting hole 101 of the injection-molded housing 100, the design of the second guiding bevel 302 can guide the metal nut 300 to enter the mounting hole 101 more smoothly, reducing the resistance and friction during the assembly process, thereby improving the assembly efficiency. The design of the second guiding bevel 302 can reduce the scratching and damage of the metal nut 300 on the edge of the mounting hole 101 of the injection-molded housing 100 during the assembly process, protect the integrity of the mounting hole 101, and extend the service life of the product.
[0048] In the nut mounting structure provided by the present application, since the block 200 and the injection-molded housing 100 are integrally injection-molded, the block 200 is made of plastic and has a certain elastic deformation capability. When the injection-molded housing 100 and the metal nut 300 expand and contract differently due to heat expansion and contraction, there is an elastic space to avoid, and no stress is generated, and the injection-molded housing 100 will not be cracked. In addition, the block 200 is elastic, and when the metal nut 300 is pressed, the block 200 can shrink and deform. When pressed into place, the block 200 is restored to its original position and embedded in the recessed portion 301, so that the metal nut 300 is stably embedded in the mounting hole 101.
[0049] In some embodiments, in combination Figure 5 and Figure 6 The side wall of the mounting hole 101 is provided with a notch 102, and the side wall of the notch 102 is integrally formed with a cantilever 103, and the end of the cantilever 103 is integrally formed with the block 200. The cantilever 103 can increase the deflection of the block 200 and enhance the elasticity of the block 200. On the one hand, when the injection-molded housing 100 and the metal nut 300 have different expansion and contraction coefficients during thermal expansion and contraction, the design of the cantilever 103 provides an elastic space for such expansion and contraction, so that the injection-molded housing 100 will not be subjected to excessive stress when the metal nut 300 moves due to temperature changes, thereby avoiding cracking caused by stress concentration; on the other hand, the block 200 is located at the end of the cantilever 103, and has greater elasticity. When the metal nut 300 is pressed and installed in the mounting hole 101, it can retreat to avoid the metal nut 300 with more effort, thereby reducing assembly resistance.
[0050] In one embodiment, in combination Figures 4 to 6 The notch 102 penetrates the injection molded housing 100 along the radial direction of the mounting hole 101. The through notch 102 provides sufficient escape space and does not block the backward rotation range of the cantilever 103 and the clamping block 200, thereby increasing the deformation movement range of the clamping block 200, enhancing the elasticity of the clamping block 200, further reducing the resistance during the assembly process, and improving the flexibility and efficiency of the assembly.
[0051] In one embodiment, in combination Figure 4 and Figure 6 , the inner contour of the mounting hole 101 is non-circular. In this way, after the metal nut 300 is assembled into the mounting hole 101, in addition to being blocked by the block 200 and unable to rotate, it will also abut against the hole wall of the non-circular mounting hole 101 and cannot rotate, thereby preventing the metal nut 300 from loosening due to factors such as vibration and temperature changes during use. When a rotational force is applied to the metal nut 300, the hole wall of the mounting hole 101 reacts to restrict the metal nut 300 from rotating relative to the mounting hole 101, and the block 200 does not need to bear the applied rotational force, thereby avoiding damage to the block 200.
[0052] Specifically, the inner contour of the mounting hole 101 may be a polygon, an ellipse, or an irregular shape, which is not limited here.
[0053] In one embodiment, in combination Figure 5 and Figure 7 , the outer contour of the metal nut 300 is non-circular. In this way, after the metal nut 300 is assembled into the mounting hole 101, in addition to being blocked by the block 200 and unable to rotate, the metal nut 300 with a non-circular outer contour will abut against the hole wall of the mounting hole 101 and cannot rotate, thereby preventing the metal nut 300 from loosening due to factors such as vibration and temperature changes during use, and achieving circumferential limitation. When a rotational force is applied to the metal nut 300, the reaction of the hole wall of the mounting hole 101 limits the rotation of the metal nut 300 relative to the mounting hole 101, and the block 200 does not need to bear the applied rotational force, thereby avoiding damage to the block 200.
[0054] Specifically, the outer contour of the metal nut 300 may be a polygon, an ellipse, or an irregular shape, which is not limited here.
[0055] In one embodiment, the cross section of the metal nut 300 is non-circular, that is, the metal nut 300 may be, but is not limited to, a non-cylindrical body such as a right prism or an elliptical column, and the shape of the mounting hole 101 matches the shape of the metal nut 300. The metal nut 300 contacts the hole wall of the mounting hole 101 to limit rotation, thereby converting the torque force on the metal nut 300 into a positive stress on the injection-molded housing 100, which greatly reduces the risk of the metal nut 300 falling off.
[0056] In one embodiment, in combination Figures 5 to 7 , the inner contour of the mounting hole 101 is a polygon, the outer contour of the metal nut 300 is a polygon, and the inner contour of the mounting hole 101 and the outer contour of the metal nut 300 fit together. Based on this, the hole wall of the mounting hole 101 and the outer wall of the metal nut 300 can fit tightly, have a larger fitting area, achieve a stronger limiting effect, and more effectively prevent the metal nut 300 from rotating or shifting in the mounting hole 101, thereby ensuring the stability and reliability of the connection. A larger fitting area means that there is more contact area between the metal nut 300 and the mounting hole 101, thereby enhancing the strength of the connection, making the connection more secure and able to withstand greater force and torque. The close fit of the polygonal contour makes the assembly process more precise. During assembly, the metal nut 300 can be accurately inserted into the mounting hole 101, reducing assembly errors and improving assembly accuracy.
[0057] Specifically, the inner contour of the mounting hole 101 and the outer contour of the metal nut 300 can be a hexagon, a quadrilateral, a pentagon, an octagon, etc., which are not limited here. For example, the inner contour of the mounting hole 101 and the outer contour of the metal nut 300 can be a hexagon, and the limiting force side faces are moderate, so as to avoid the circumferential limiting effect being weak due to too few side faces, and also avoid the increase of manufacturing cost due to too many side faces.
[0058] In one embodiment, in combination Figure 7 The recessed portion 301 is extended along the circumference of the metal nut 300, so that the recessed portion 301 and the block 200 do not need to be precisely aligned during assembly, and 360° assembly can be achieved, which greatly simplifies the assembly process and improves assembly efficiency.
[0059] In one embodiment, in combination Figure 5 The length of the block 200 protruding from the side wall of the mounting hole 101 is 1 / 10 to 1 / 3 of the aperture of the mounting hole 101, so that the protruding length of the block 200 is moderate and the connection strength with the recessed portion 301 is moderate, thereby avoiding a weak connection strength between the metal nut 300 and the block 200 due to a short protruding length of the block 200, and also avoiding excessive resistance when the metal nut 300 is installed into the mounting hole 101 due to an excessively large protruding length of the block 200.
[0060] In one embodiment, in combination Figure 5 The length of the block 200 protruding from the side wall of the mounting hole 101 is 1 / 4 to 4 / 5 of the depth of the recessed portion 301, so that the connection strength between the block 200 and the recessed portion 301 is moderate, avoiding the short connection length and weak connection strength between the block 200 and the recessed portion 301 due to the short protruding length of the block 200, and avoiding the excessive resistance when the metal nut 300 is installed into the mounting hole 101 due to the excessive protruding length of the block 200, and the block 200 cannot be completely embedded in the recessed portion 301.
[0061] In one embodiment, the height of the metal nut 300 is less than or equal to the depth of the mounting hole 101, so that after the metal nut 300 is installed in the mounting hole 101, the metal nut 300 does not protrude from the injection molded shell 100, avoiding interference with other structures and making the surface of the nut mounting structure simple.
[0062] Embodiment 2
[0063] The present application provides a display module, including any one of the above-mentioned nut mounting structures for a housing. Since the nut mounting structure has low manufacturing cost and high assembly efficiency, the display module has low manufacturing cost, high assembly efficiency and high yield.
[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A nut mounting structure for a housing, characterized in that: The nut mounting structure for the shell includes an injection molded shell, a clamping block and a metal nut, the injection molded shell has a mounting hole, the clamping block and the injection molded shell are integrally injection molded, one end of the clamping block is connected to the side wall of the mounting hole, one end of the clamping block extends into the mounting hole, the side of the metal nut abuts against the hole wall of the mounting hole, the side of the metal nut has a recessed portion, the metal nut can be accommodated in the mounting hole, and the clamping block is embedded in the recessed portion.
2. The nut mounting structure for a housing according to claim 1, characterized in that: The side surface of the clamping block close to the opening of the mounting hole has a first guiding inclined surface, and the first guiding inclined surface is arranged gradually away from the opening of the mounting hole in a direction away from the side wall of the mounting hole; And / or, one end surface of the metal nut has a second guiding inclined surface, and the second guiding inclined surface is gradually arranged outwardly toward the other end surface of the metal nut.
3. The nut mounting structure for a housing according to claim 1, characterized in that: A notch is provided on the side wall of the mounting hole, a cantilever is integrally formed on the side wall of the notch, and the end of the cantilever is integrally formed with the clamping block.
4. The nut mounting structure for a housing according to claim 3, characterized in that: The notch penetrates the injection-molded housing along a radial direction of the mounting hole.
5. The nut mounting structure for a housing according to claim 1, characterized in that: The inner contour of the mounting hole is non-circular, and / or the outer contour of the metal nut is non-circular.
6. The nut mounting structure for a housing according to claim 5, characterized in that: The inner contour of the mounting hole is a polygon, the outer contour of the metal nut is a polygon, and the inner contour of the mounting hole and the outer contour of the metal nut are in close contact with each other.
7. The nut mounting structure for a housing according to claim 1, characterized in that: The recessed portion is extended along the circumferential direction of the metal nut.
8. The nut mounting structure for a housing according to claim 1, characterized in that: The length of the clamping block protruding from the side wall of the mounting hole is 1 / 10 to 1 / 3 of the hole diameter of the mounting hole.
9. The nut mounting structure for a housing according to any one of claims 1 to 8, characterized in that: The height of the metal nut is less than or equal to the depth of the mounting hole.
10. A display module, characterized in that: A nut mounting structure for a housing comprising any one of claims 1 to 9.