A graphics card cover module structure with an infinite mirror

Abstract

The utility model relates to a kind of graphic card cover module structure with infinite mirror, including base, light source component and infinite mirror component, first sunken table and second sunken table are equipped on the base, the first sunken table is set in the below of the second sunken table;The light source component is set in the first sunken table of the base, the first sunken table bottom is equipped with sunken stud, the light source component is connected by screw thread the base, the light source component is used to provide light source;The infinite mirror component is set in the above of the light source component, for presenting infinite mirror effect.The utility model makes the whole graphic card cover module structure layout compact, each component installation positioning is accurate, it is convenient for the maintenance and replacement of later period, simultaneously, the technical scheme of the present application realizes the unique infinite mirror effect, improves the visual attraction of graphic card appearance, satisfies the demand of personalized appearance for user.

Description

Technical Field

[0001] This utility model relates to the field of graphics card structure, specifically to a graphics card top cover module structure with an infinity mirror. Background Technology

[0002] With the continuous development of computer hardware technology, graphics cards are not only constantly improving in performance, but users are also placing higher demands on the personalization and visual effects of their appearance. Traditional graphics card cover structures are relatively simple in terms of appearance, usually only serving a basic decorative function, and failing to provide users with a novel and unique visual experience. In order to meet the market's demand for diversified graphics card appearances, there is an urgent need to design a graphics card cover module structure with innovative visual effects. Utility Model Content

[0003] In view of the above problems, this utility model provides a graphics card top cover module structure with an infinity mirror.

[0004] To achieve the above objectives, the applicant provides a graphics card top cover module structure with an infinity mirror, comprising: a base, a light source assembly, and an infinity mirror assembly. The base has a first recessed platform and a second recessed platform, with the first recessed platform located below the second recessed platform. The light source assembly is disposed within the first recessed platform of the base, and the bottom of the first recessed platform has a recessed stud. The light source assembly is connected to the base by screw threads and is used to provide light. The infinity mirror assembly is disposed above the light source assembly and is used to present an infinity mirror effect.

[0005] Preferably, the light source assembly includes: a circuit board and a light guide plate. The circuit board is disposed within a first recessed platform of the base. The circuit board is provided with a ring-shaped array of LED lights and a first linear array of LED lights. The first linear array of LED lights is disposed inside the ring-shaped array of LED lights. The circuit board is used to provide a lateral light source. The light guide plate is disposed within the first recessed platform and covers the circuit board. The light guide plate has light guide holes in the areas corresponding to the ring-shaped array of LED lights and the first linear array of LED lights. The light guide plate has optical dots on one side facing the circuit board. The optical dots cooperate with the light guide holes to guide the lateral light source on the circuit board into a uniform oriented light source.

[0006] Preferably, the infinity mirror assembly includes: a first diffuser, a second diffuser, and a nameplate. The light guide plate has a third recess on one side opposite the first diffuser, and the first diffuser is disposed in the third recess. The second diffuser is disposed above the first diffuser and covers the light guide plate, and the area on the second diffuser corresponding to the first diffuser is a hollow area. The nameplate covers the first diffuser and fills the hollow area.

[0007] Preferably, the infinity mirror assembly further includes two PVD coating layers and an ink layer. The two PVD coating layers cover the upper and lower surfaces of the nameplate, respectively. The PVD coating layer located on the lower surface of the nameplate has a hollow area. The ink layer is disposed below the nameplate and covers the PVD coating layer.

[0008] Preferably, the infinity mirror assembly further includes a PET protective layer disposed above the nameplate, and the PET protective layer is applied to the PVD coating layer by hot pressing.

[0009] Preferably, the module structure further includes a top cover, which is disposed above the infinity mirror assembly. The bottom of the top cover is a planar structure and is placed inside the second recessed platform. The bottom edge of the top cover is provided with an annular adhesive backing. The top cover is bonded to the base through a pressure-holding process.

[0010] Preferably, the top cover has a hollow display area, the bottom edge of the nameplate has an annular skirt, the nameplate is placed in the hollow display area, and the annular skirt abuts against the bottom of the top cover.

[0011] Preferably, the circuit board is further provided with a second linear array LED light group, which is disposed outside the annular array LED light group, and the light guide plate is provided with a light guide hole in the area corresponding to the second linear array LED light group.

[0012] Preferably, the circuit board has a power-conducting block at the bottom, and the first recessed platform has a rectangular opening at the bottom. When the circuit board is placed inside the first recessed platform, one end of the power-conducting block passes through the rectangular opening.

[0013] Unlike existing technologies, the above technical solution has the following beneficial effects: Compared with existing technologies, this utility model makes the entire graphics card top cover module structure more compact, and the installation and positioning between the light source component and the infinity mirror component are more accurate. The first and second recessed platforms make full use of the base space, avoiding mutual interference between the light source component, the infinity mirror component, and the top cover, thus ensuring structural stability. The orderly installation of the light source component and the infinity mirror component facilitates later maintenance and replacement. At the same time, the cooperation between the light source component and the infinity mirror component achieves a unique infinity mirror effect, enhancing the visual appeal of the graphics card and meeting users' needs for personalized appearance.

[0014] The above description of the utility model is merely an overview of the technical solution of this utility model. In order to enable those skilled in the art to better understand the technical solution of this utility model and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this utility model easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this utility model. Attached Figure Description

[0015] Figure 1 This is an exploded view of the module structure described in this embodiment;

[0016] Figure 2 This is a schematic diagram of the base described in this embodiment;

[0017] Figure 3 This is a schematic diagram of the circuit board described in this embodiment;

[0018] Figure 4 This is a schematic diagram of the circuit board described in this embodiment;

[0019] Figure 5 This is a schematic diagram of the light guide plate described in this embodiment;

[0020] Figure 6 This is a schematic diagram of the nameplate described in this embodiment;

[0021] Figure 7 This is a schematic diagram of the light guide plate described in this embodiment.

[0022] The reference numerals used in the above figures are explained as follows:

[0023] 1. Base; 11. First recessed platform; 12. Second recessed platform; 13. Stud; 14. Rectangular opening; 21. Circuit board; 211. Circular array LED light group; 212. First linear array LED light group; 213. Second linear array LED light group; 214. Power block; 22. Light guide plate; 221. Light guide hole; 222. Third recessed platform; 223. Optical dots; 31. First diffuser; 32. Second diffuser; 321. Hollow area; 33. Nameplate; 331. Circular skirt; 4. Top cover; 41. Hollow display area. Detailed Implementation

[0024] To illustrate in detail the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this utility model, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this utility model and are therefore intended to limit the scope of protection of this utility model.

[0025] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0026] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0027] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0028] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0029] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0030] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0031] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0032] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0033] Please see Figures 1 to 6This embodiment provides a graphics card top cover module structure with an infinity mirror, including: a base 1, a light source assembly, and an infinity mirror assembly. The base 1 is provided with a first recessed platform 11 and a second recessed platform 12, with the first recessed platform 11 located below the second recessed platform 12. The light source assembly is disposed within the first recessed platform 11 of the base 1, and the bottom of the first recessed platform 11 is provided with a recessed stud 13. The light source assembly is connected to the base 1 by screw threads and is used to provide light. The infinity mirror assembly is disposed above the light source assembly and is used to present an infinity mirror effect.

[0034] The base 1 is the fundamental support component of the entire graphics card top cover module structure. It features a first recessed platform 11 and a second recessed platform 12 for mounting other components, serving a positioning and load-bearing function. The first recessed platform 11, located on the base 1, primarily serves to mount the light source assembly, providing installation space and a fixed position. The second recessed platform 12, situated above the first recessed platform 11, is used to mount the top cover 4, ensuring the connection and positioning between the top cover 4 and the base 1. The light source assembly, responsible for providing light, is one of the key components for achieving the infinity mirror effect. Installed within the first recessed platform 11, the light source assembly includes a circuit board 21 and a light guide plate 22. Both the circuit board 21 and the light guide plate 22 have corresponding through holes on their edges. A recessed stud 13 is located at the bottom of the first recessed platform 11. Screws pass through the through holes and are screwed into the stud 13, securing the circuit board 21 and the light guide plate 22 to the base 1. The infinity mirror assembly, positioned above the light source assembly, utilizes a special structural design and the principles of light reflection and refraction to create the infinity mirror effect, enhancing the visual appeal of the graphics card. Specifically, the first and second recessed platforms of base 1 provide reasonable installation space for each component. The light source component is fixed in the first recessed platform 11 by recessed studs 13 and screws to ensure its stable position. When the light source component emits light, the light is transmitted upward to the infinity mirror component. The infinity mirror component uses its own structure to reflect and refract the light multiple times, thereby producing the infinity mirror effect.

[0035] The placement of the first recessed platform 11 and the second recessed platform 12 fully utilizes the space of the base 1, avoiding mutual interference between the light source assembly, the infinity mirror assembly, and the top cover 4, thus ensuring structural stability. The orderly installation of the light source assembly and the infinity mirror assembly facilitates later maintenance and replacement. At the same time, this embodiment achieves a unique infinity mirror effect, enhancing the visual appeal of the graphics card and meeting users' needs for personalized appearance.

[0036] Please see Figure 3 , Figure 4 , Figure 5 and Figure 7In this embodiment, the light source assembly includes a circuit board 21 and a light guide plate 22. The circuit board 21 is disposed within the first recessed platform 11 of the base 1. The circuit board 21 is provided with a ring-shaped LED array 211 and a first linear LED array 212. The first linear LED array 212 is disposed inside the ring-shaped LED array 211. The circuit board 21 is used to provide a lateral light source. The light guide plate 22 is disposed within the first recessed platform 11 and covers the circuit board 21. The light guide plate 22 corresponds to the ring-shaped LED array 211 and the first linear LED array 212. The linear array LED light group 212 has a light guide hole 221 in the area. The light guide plate 22 has optical dots 223 on one side opposite the circuit board 21. The optical dots 223 cooperate with the light guide hole 221 to guide the lateral light source on the circuit board 21 into a uniform facing light source. The circuit board 21 is also provided with a second linear array LED light group 213. The second linear array LED light group 213 is located outside the ring array LED light group 211. The area of ​​the light guide plate 22 corresponding to the second linear array LED light group 213 is also provided with a light guide hole 221.

[0037] Circuit board 21 is the core component of the light source assembly, integrating a ring-shaped LED array 211, a first linear LED array 212, and a second linear LED array 213. It provides lateral light and controls and powers the LEDs through circuit design. The ring-shaped LED array 211 refers to the LEDs arranged in a ring on circuit board 21, serving as the main light-emitting unit. It emits lateral light, which propagates multiple times, ultimately forming a ring of light at the edge of the nameplate 33. The first linear LED array 212 and the second linear LED array 213 refer to the LEDs arranged in a straight line on circuit board 21, also serving as light-emitting units to provide light for the patterns on the nameplate 33 and the top cover 4. A light guide plate 22 is installed inside the first recessed platform 11 and covers the circuit board 21. Multiple optical dots 223 are arranged on one side of the light guide plate 22 opposite to the circuit board 21, and these dots are arranged in an array. The optical dots 223 cooperate with the light guide holes 221 on the light guide plate 22 to guide the lateral light source generated by the circuit board 21 into a uniform facing light source, ensuring that the light can be uniformly transmitted to the infinite mirror assembly. Specifically, the annular array LED group 211, the first linear array LED group 212, and the second linear array LED group 213 on the circuit board 21 emit lateral light after being powered on. The light shines onto the light guide plate 22, passes through the light guide holes 221 and the optical dots 223 on the light guide plate 22, and utilizes the principles of light reflection and refraction to redistribute and guide the lateral light, causing the light to be uniformly emitted from the surface of the light guide plate 22, forming a uniform facing light source, providing stable and uniform light input to the infinite mirror assembly. The various LED arrays on circuit board 21 provide ample and diverse light sources to meet the lighting requirements of the Infinite Mirror effect. The combination of the light guide plate 22 and the LED array effectively solves the problem of uneven light distribution, ensuring uniform light output and making the Infinite Mirror effect more stable and clear, thus improving the quality and visual experience of the graphics card's lighting effects.

[0038] Please see Figure 1 , Figure 5 and Figure 6In this embodiment, the infinity mirror assembly includes: a first diffuser 31, a second diffuser 32, and a nameplate 33. The light guide plate 22 has a third recess 222 on one side opposite to the first diffuser 31, and the first diffuser 31 is disposed in the third recess 222. The second diffuser 32 is disposed above the first diffuser 31 and covers the light guide plate 22, and the area on the second diffuser 32 corresponding to the first diffuser 31 is a hollow area 321. The nameplate 33 covers the first diffuser 31 and fills the hollow area 321. The infinity mirror assembly also includes two PVD coating layers and an ink layer. The two PVD coating layers respectively cover the upper and lower surfaces of the nameplate 33. The PVD coating layer located on the lower surface of the nameplate 33 has a hollow area. The ink layer is disposed below the nameplate 33 and covers the PVD coating layer.

[0039] The first diffuser 31 diffuses and atomizes the light emitted from the ring-shaped LED array 211, making the light softer and preventing the halo around the nameplate 33 from being too bright and glaring. The second diffuser 32 diffuses and atomizes the light emitted from the second linear LED array 213, preventing the light from the top cover 4 from being glaring. The nameplate 33 is a transparent PC board or a transparent acrylic board. Specifically, the light emitted from the light guide plate 22 first passes through the first diffuser 31 and the second diffuser 32 to diffuse and atomize the light, making the light distribution more uniform. After the light passes through the nameplate 33 and interacts with the PVD coating layer and the ink layer, it undergoes multiple reflections and refractions to produce an infinity mirror effect.

[0040] In this embodiment, the infinity mirror assembly further includes a PET protective layer, which is disposed above the nameplate 33 and is applied to the PVD coating layer via hot pressing. The PET protective layer, made of polyethylene terephthalate, is applied to the PVD coating layer above the nameplate 33 via hot pressing, primarily to protect the nameplate 33 and its surface PVD coating layer from scratches, abrasion, and other external damage. The PET protective layer possesses excellent physical and optical properties, and is tightly bonded to the PVD coating layer above the nameplate 33 via hot pressing, forming a robust protective barrier. During daily use, it effectively blocks dust, debris, and external forces from contacting and damaging the nameplate 33 and the PVD coating layer, while not affecting light transmission, ensuring the normal presentation of the infinity mirror effect.

[0041] Please see Figure 1In this embodiment, the module structure further includes a top cover 4, which is disposed above the infinity mirror assembly. The bottom of the top cover 4 is a flat structure and is placed within the second recessed platform 12. The bottom edge of the top cover 4 is provided with an annular adhesive backing. The top cover 4 is bonded to the base 1 through a pressure-holding process. The top cover 4, installed above the infinity mirror assembly, serves as the outermost component of the graphics card top cover module structure. Its bottom is placed within the second recessed platform 12, protecting the internal components and showcasing the infinity mirror effect. The annular adhesive backing on the bottom edge is used to bond to the base 1, ensuring a secure connection. This connection method between the top cover 4 and the base 1 is simple and reliable. The annular adhesive backing and pressure-holding process ensure a strong connection, effectively preventing the top cover 4 from loosening or falling off, and guaranteeing the stability of the entire structure.

[0042] Please see Figure 1 and Figure 6 In this embodiment, the upper cover 4 is provided with a hollow display area 41, and the bottom edge of the nameplate 33 is provided with an annular skirt 331. The nameplate 33 is placed in the hollow display area 41, and the annular skirt 331 abuts against the bottom of the upper cover 4. The annular skirt 331 of the nameplate 33 abuts tightly against the edge of the hollow display area 41 of the upper cover 4, ensuring that the nameplate 33 is accurately positioned within the hollow display area 41, providing good conditions for light reflection and the display of the infinity mirror effect. After the light creates an infinity mirror effect between the nameplate 33, the PVD coating layer, and the ink layer, it is clearly displayed through the hollow display area 41 of the upper cover 4. The design of the hollow display area 41 and the annular skirt 331 makes the display of the infinity mirror effect more focused and clear, improving the visual effect. The annular skirt 331 plays a positioning role for the nameplate 33, ensuring the accurate relative position between the nameplate 33 and the upper cover 4, which is beneficial to the reflection of light and the stable presentation of the infinity mirror effect. At the same time, it also enhances the aesthetics of the structure, making the entire graphics card top cover module look more refined.

[0043] Please see Figure 2 and Figure 4In this embodiment, a power-conducting block 214 is provided at the bottom of the circuit board 21, and a rectangular opening 14 is provided at the bottom of the first recessed platform 11. When the circuit board 21 is placed inside the first recessed platform 11, one end of the power-conducting block 214 passes through the rectangular opening 14. The power-conducting block 214 is located at the bottom of the circuit board 21 and is a component connecting the circuit board 21 to external circuits, used to transmit electrical energy so that the LED array on the circuit board 21 can work normally. The rectangular opening 14 is located at the bottom of the first recessed platform 11 and cooperates with the power-conducting block 214 to provide a passage for the power-conducting block 214 to pass through, realizing the electrical connection between the circuit board 21 and the external circuits. Through the cooperative design of the power-conducting block 214 and the rectangular opening 14, the connection method between the circuit board 21 and the external circuits is greatly simplified, eliminating the need for complex wiring and installation operations, and improving production assembly efficiency. At the same time, it ensures the stability and reliability of the circuit connection, reduces the probability of failure caused by connection problems, ensures the normal operation of the light source components, and thus ensures the stable presentation of the infinity mirror effect.

[0044] Compared with existing technologies, this invention achieves a compact layout for the entire graphics card top cover module, with accurate positioning of the light source assembly and the infinity mirror assembly. The first and second recessed platforms fully utilize the base space, preventing interference between the light source assembly, the infinity mirror assembly, and the top cover, thus ensuring structural stability. The orderly installation of the light source assembly and the infinity mirror assembly facilitates future maintenance and replacement. Furthermore, the cooperation between the light source assembly and the infinity mirror assembly achieves a unique infinity mirror effect, enhancing the visual appeal of the graphics card and satisfying users' demands for personalized aesthetics.

[0045] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this utility model, this should not limit the scope of patent protection of this utility model. Any technical solutions resulting from equivalent structural or procedural substitutions or modifications made based on the essential concept of this utility model and utilizing the content described in the text and drawings of this utility model, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this utility model.

Claims

1. A graphics card top cover module structure with an infinity mirror, characterized in that, include: A base, wherein a first recessed platform and a second recessed platform are provided on the base, and the first recessed platform is disposed below the second recessed platform; A light source assembly is disposed within a first recessed platform of the base. The bottom of the first recessed platform is provided with a recessed stud. The light source assembly is connected to the base by screw threads and is used to provide a light source. An infinity mirror assembly is positioned above the light source assembly to create an infinity mirror effect.

2. The graphics card top cover module structure with an infinity mirror according to claim 1, characterized in that, The light source assembly includes: A circuit board is disposed within the first recess of the base. The circuit board is provided with a ring array LED light group and a first linear array LED light group. The first linear array LED light group is disposed inside the ring array LED light group. The circuit board is used to provide a side light source. A light guide plate is disposed within the first recessed platform and covers the circuit board. The light guide plate has light guide holes in the areas corresponding to the annular array LED light group and the first linear array LED light group. Optical dots are provided on one side of the light guide plate opposite to the circuit board. The optical dots cooperate with the light guide holes to guide the lateral light source on the circuit board into a uniform facing light source.

3. The graphics card top cover module structure with an infinity mirror according to claim 2, characterized in that, The infinite mirror assembly includes: The first diffuser sheet, and the light guide plate has a third recessed platform on the side opposite to the first diffuser sheet, and the first diffuser sheet is disposed in the third recessed platform; The second diffuser sheet is disposed above the first diffuser sheet and covers the light guide plate. The area on the second diffuser sheet corresponding to the first diffuser sheet is a hollow area. A nameplate, which covers the first diffuser sheet and fills the hollow area.

4. The graphics card top cover module structure with an infinity mirror according to claim 3, characterized in that, The infinity mirror assembly also includes two PVD coating layers and an ink layer. The two PVD coating layers cover the upper and lower surfaces of the nameplate, respectively. The PVD coating layer located on the lower surface of the nameplate has a hollow area. The ink layer is disposed below the nameplate and covers the PVD coating layer.

5. The graphics card top cover module structure with an infinity mirror according to claim 4, characterized in that, The infinity mirror assembly also includes a PET protective layer disposed above the nameplate, and the PET protective layer is applied to the PVD coating layer by hot pressing.

6. The graphics card top cover module structure with an infinity mirror according to claim 3, characterized in that, It also includes a top cover, which is disposed above the infinity mirror assembly. The bottom of the top cover has a flat structure and is placed inside the second recessed platform. The bottom edge of the top cover is provided with an annular adhesive backing. The top cover is bonded to the base through a pressure-holding process.

7. The graphics card top cover module structure with an infinity mirror according to claim 6, characterized in that, The top cover has a hollow display area, and the bottom edge of the nameplate has an annular skirt. The nameplate is placed in the hollow display area, and the annular skirt abuts against the bottom of the top cover.

8. The graphics card top cover module structure with an infinity mirror according to claim 2, characterized in that, The circuit board is also provided with a second linear array LED light group, which is located outside the ring array LED light group. The light guide plate is provided with light guide holes in the area corresponding to the second linear array LED light group.

9. The graphics card top cover module structure with an infinity mirror according to claim 2, characterized in that, The circuit board has a power-conducting block at the bottom, and the first recessed platform has a rectangular opening at the bottom. When the circuit board is placed inside the first recessed platform, one end of the power-conducting block passes through the rectangular opening.

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