Electromagnetic shielding box assembly and electromechanical equipment

Abstract

The utility model relates to an electromagnetic shielding box assembly and electromechanical equipment. The electromagnetic shielding box assembly comprises an outer shell, a shielding case and a shielding cover, the shielding case is arranged in the outer shell, the shielding cover covers the outer shell and the shielding case to form a shielding space for electronic devices to be arranged in, the outer shell is provided with at least one through hole penetrating through a shell body, and the shielding cover is arranged in the shielding space. The shielding cover is provided with at least one first elastic part, and the first elastic part extends outwards from the body of the shielding cover, penetrates through the through hole and then elastically abuts against a working part located outside the shell, so that a conductive path from the shielding cover to the working part is formed. The utility model has the advantages of lower cost, simple connection process, flexibility and convenience in installation and use, reliable performance and the like.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic shielding technology, and more specifically, to an electromagnetic shielding box assembly and an electromechanical device. Background Art

[0002] When electronic equipment is used, it may involve the problem of electromagnetic compatibility (EMC), that is, it is hoped that the electronic equipment can work normally in the electromagnetic environment, on the one hand, avoiding electromagnetic influence from the outside world, and on the other hand, not polluting the electromagnetic environment and interfering with other equipment. In particular, when electronic equipment may be subjected to a harsh electromagnetic working environment, if the electronic equipment can have good electromagnetic compatibility at this time, it will be beneficial to ensure the stability and safety of the system's working performance.

[0003] Generally, appropriate electromagnetic shielding means can be used to make electronic equipment achieve electromagnetic compatibility that meets the requirements of specific applications. For example, electronic equipment can be arranged in a corresponding electromagnetic shielding space to work in order to block or reduce the influence of unwanted electromagnetic signals. Such an electromagnetic shielding space is generally composed of a number of shielding shells made of metal materials such as copper, aluminum, and steel, and then these shells are assembled together using screws, screws and other connectors. Sometimes they are fixedly connected by welding, and such electromagnetic shielding devices generally use direct hard connection for grounding. After research, the present application found that most of the existing configuration methods such as the above have the advantages of high cost, complex connection process, lack of flexibility during installation and use, and affect electromagnetic compatibility performance, which can be improved. Utility Model Content

[0004] In view of this, the present application provides an electromagnetic shielding box assembly and an electromechanical device, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art, or provide an alternative technical solution for the prior art.

[0005] According to one aspect of the present application, an electromagnetic shielding box assembly is first provided, comprising a shell, a shielding cover and a shielding lid, wherein the shielding cover is arranged inside the shell, and the shielding lid is covered on the shell and the shielding cover to form a shielding space for electronic devices to be arranged therein, wherein the shell has at least one through hole passing through the shell, and the shielding cover has at least one first elastic part, which extends outward from the body of the shielding cover through the through hole and then elastically abuts against a working part located outside the shell, thereby forming a conductive path from the shielding cover to the working part.

[0006] In the electromagnetic shielding box assembly according to the present application, optionally, the first elastic part includes a first part and a second part, the first part is connected to the body of the shielding cover, the second part is connected to the first part and has a curved section, and the curved section produces elastic deformation when abutting against the working part.

[0007] In the electromagnetic shielding box assembly according to the present application, optionally, the first part extends obliquely relative to the body of the shielding cover, and / or the first elastic part also includes a middle part, which is connected and arranged between the first part and the second part to form an arc transition.

[0008] In the electromagnetic shielding box assembly according to the present application, optionally, the first elastic part is integrally formed with the body of the shielding cover, and / or at least a portion of the bottom outer surface of the shielding cover is adhesively bonded to the inner surface of the outer shell, and / or the shielding cover and the shielding cover are made of the same or different metal materials and the outer shell is made of insulating material.

[0009] In the electromagnetic shielding box assembly according to the present application, optionally, the outer shell has a joint portion, a first through-hole and a first opening leading to the inner cavity of the outer shell, the shielding cover has a second elastic portion, a second through-hole and a second opening leading to the inner cavity of the shielding cover, the second opening is smaller than the first opening and is arranged in the same direction as the first opening, the shielding cover has a protruding portion and an assembly portion that matches the joint portion, after the assembly portion and the joint portion are engaged, the shielding cover closes the first opening, and the protruding portion presses against the second elastic portion to produce elastic deformation, so that the shielding cover and the shielding cover abut against each other to close the second opening, and when the electronic device is arranged in the shielding space, it is electrically connected to the outside via the second through-hole and the first through-hole.

[0010] In the electromagnetic shielding box assembly according to the present application, optionally, the protruding portion and / or the assembly portion is configured as a bending structure, the end of the bending structure of the protruding portion presses against the second elastic portion, and / or the assembly portion is configured as a groove shape and is arranged adjacent to the protruding portion, and / or the protruding portion is integrally formed with the body of the shielding cover, and / or the joining portion is arranged at the end of the side of the outer shell, and / or the joining portion and the assembly portion are adhesively joined.

[0011] In the electromagnetic shielding box assembly according to the present application, optionally, the first perforation and the second perforation are respectively arranged at the bottom of the outer shell and the shielding cover, and the electronic device includes a circuit board provided with a plug-in port, and the plug-in port is electrically connected to the outside via the second perforation and the first perforation.

[0012] Secondly, according to another aspect of the present application, there is also provided an electromechanical device, comprising:

[0013] An electromagnetic shielding box assembly as described in any one of the above items;

[0014] an electronic device disposed in a shielding space of the electromagnetic shielding box assembly, the electronic device being insulated and spaced apart from the shielding case and the shielding cover; and

[0015] The working component is located outside the housing and connected to the housing. The first elastic portion of the shielding cover elastically abuts against the working component to form a conductive path from the shielding cover to the working component.

[0016] In the electromechanical device according to the present application, optionally, the conductive path is used for ground connection, and the working component is also electrically connected to the electronic device via a first through hole provided on the housing and a second through hole provided on the shielding cover to receive an output signal from the electronic device to operate.

[0017] In the electromechanical device according to the present application, optionally, the working component includes a motor, and the electronic device includes an ECU.

[0018] The present application has the advantages of lower cost, simple connection process, flexible and convenient installation and use, and reliable performance. The use of a shielding cover with an elastic portion can provide a reliable conductive path for the electromagnetic shielding box assembly to ensure electromagnetic compatibility performance. In addition, by embedding a metal cover inside the insulating shell and forming a reliable elastic connection structure with the metal cover located above, a Faraday cage can be formed to achieve a reliable electromagnetic shielding function. The present application fills the gap in the application of the above structure in the field of electromagnetic shielding, can effectively reduce the large reverse force commonly present between existing shielding components, can provide a larger space for the layout of electronic equipment, and can provide a good electromagnetic shielding working environment for electronic equipment, thereby improving the stability and safety of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a partial sectional side view of an electromechanical device embodiment according to the present application, in which an electromagnetic shielding box assembly embodiment according to the present application is configured.

[0020] Figure 2 yes Figure 1 The schematic diagram of the partial three-dimensional structure of the shell in the embodiment of the electromagnetic shielding box assembly is shown.

[0021] Figure 3 yes Figure 1 A partial three-dimensional structural schematic diagram of the shielding cover in the embodiment of the electromagnetic shielding box assembly is shown.

[0022] Figure 4 Yes Figure 1 The schematic diagram of the partial three-dimensional structure of the electromagnetic shielding box assembly after the shell and the shielding cover are assembled is shown. DETAILED DESCRIPTION

[0023] First of all, it should be noted that the electromagnetic shielding box assembly and the electromechanical device according to the present application will be described below by way of example, but all descriptions shall not be used to form any limitation on the present application. In this article, the technical terms "first" and "second" are only used for distinguishing purposes and are not intended to indicate their order and relative importance. The technical terms "upper", "lower", "right", "left", "bottom", "top" and their derivatives should be related to the following. Figure 1 The present application may be oriented in various alternative orientations, unless expressly specified to the contrary.

[0024] As an example, in Figure 1 The figure schematically shows a general situation of an embodiment of an electromechanical device according to the present application, wherein an electromagnetic shielding box assembly 100, an electronic device 200, a working part 300 and an optional electrical connector (not shown) are provided, and the electronic device 200 is arranged in a shielding space S provided by the electromagnetic shielding box assembly 100. The working circuits, components, units or modules on the electronic device 200 can be electrically connected to the working part 300, the electrical connector or other possible devices located outside the electromagnetic shielding box assembly 100 according to application requirements, so as to realize the functional application required by the electromechanical device.

[0025] Specifically, the working component 300 can be a corresponding device for performing the expected function in the electromechanical device, such as a motor, a compressor, a pump, etc. The working component 300 can be optionally fixed to the outside of the housing 10 of the electromagnetic shielding box assembly 100 using connectors such as bolts and screws, and it can receive an output signal from the electronic device 200 through the connection port 311 to work, such as being controlled to perform many possible operations such as starting, standby, stopping, or running for a specific time.

[0026] The electronic device 200 can be connected to the outside through one or more electrical connectors to transmit various possible electrical signals, electrical energy, etc. The specific configuration model, setting quantity, layout position, etc. of the electrical connector can be designed accordingly according to application needs, and this application does not make any specific restrictions on this. For example, the electrical connector can be optionally fixed to the housing 10 of the electromagnetic shielding box assembly, such as forming a side-by-side arrangement with the working component 300 outside the housing.

[0027] It should be noted that the electromechanical equipment according to the present application can be of a wide range of types, for example, including but not limited to vehicle power steering, electronic compressors, hydraulic devices, vehicle braking mechanisms, etc. The electronic device 200 is installed in the electromagnetic shielding box assembly 100. It is used as a component of the electromechanical equipment to provide corresponding functional applications. For example, it can be used as an ECU (Electronic Control Unit) to control the operation of other parts in the electromechanical equipment (such as a steering gear), such as controlling the operation of the working part 300 (such as a motor). The electronic device 200 may have a circuit board 202, and any possible electronic components, modules or units, such as resistors, capacitors, field effect transistors, integrated chips, plug ports, batteries, etc., can be configured for the electronic device 200 as needed. They are connected and arranged through the circuit layer on the circuit board 202 to form corresponding functional applications. Figure 1 Reference numeral 211 schematically indicates the optional plug port 201. The circuit board 202 may be a printed circuit board (PCB) and may be designed to have a single layer, two layers or more layers, which may be achieved by etching one or more copper layers.

[0028] The electromagnetic shielding box assembly 100 provides a shielding space S for the electronic device 200, which can effectively isolate or reduce the electromagnetic interference from the external environment to the electronic device 200, and can also shield the electronic device 200 from the external electromagnetic influence. When in use, in addition to possible grounding requirements, the electronic device 200 can be arranged to be insulated and separated from the components or parts of the electromagnetic shielding box assembly 100 that constitute the shielding space S, such as the shielding cover 20 and the shielding cover 30 described below, so as to ensure the effect of electromagnetic shielding.

[0029] In one or more embodiments, the electromagnetic shielding box assembly 100 may include a housing 10, a shielding cover 20, and a shielding lid 30. The housing 10 may be made of one or more insulating materials such as plastic, ceramic, wood, etc., in a suitable configuration and size that meets application requirements, for example, plastic may be used to form the housing by injection molding.

[0030] As an example, the housing 10 may be provided with an opening 14, through which the inner cavity of the housing can be entered, and the shielding cover 20 and the electronic device 200 can be placed in the inner cavity of the housing 10 through the opening 14. The engaging portion 12 may be provided on the housing 10 and matched with the assembly portion 32 on the shielding cover 30, so as to join the shielding cover 30 and the housing 10 together. Optionally, the assembly portion 32 and the engaging portion 12 may be glued and fixed using adhesive, for example, the assembly portion 32 may be configured into a suitable structure such as a groove, for example, a portion of the shielding cover 30 (such as the edge) may be bent or stamped to form a groove structure, and then the end of the side of the housing 10 may be bonded to the groove using adhesive, that is, at this time, the above-mentioned end of the housing 10 is directly used as the engaging portion 12, which is very simple and practical, can avoid complex structures and save costs. Of course, in other embodiments, the engaging portion 12 and the matching assembly portion 32 are allowed to have relatively complex structures, for example, a snap-on structure, a screw-on structure, etc. may be used.

[0031] One or more perforations 13 may be configured on the housing 10 as required, and the perforations 13 are configured to penetrate the body of the housing 10, so as to provide a passage for the electronic device 200 to be electrically connected to the outside together with the perforations 23 located on the shielding cover 20, for example, components (such as plug ports) on the electronic device 200 or external components (such as electrical connectors) may be connected correspondingly via the perforations 13 and the perforations 23. As an example, the perforations 13 and the perforations 23 may be respectively arranged at the bottoms of the housing 10 and the shielding cover 20, and when the circuit board 202 of the electronic device 200 is provided with a plug port 201, the plug port 201 may be optionally arranged to pass through the perforations 23 and the perforations 13, so as to electrically connect the electronic device 200 to a target object (such as a working part, a cable, an electrical connector, etc.) located outside the electromagnetic shielding box assembly 100. It should be understood that the arrangement position, the number of settings, the shape and size of the perforations 13 and the perforations 23 will be configured according to the application requirements. In addition, sealing members such as rubber rings may be optionally arranged around the perforations 13 and / or 23 so as to form close contact with components such as the plug port 201 passing through the above-mentioned openings, thereby ensuring and improving the electromagnetic shielding effect of the electromagnetic shielding box assembly 100.

[0032] The shielding cover 20 is arranged in the housing 10 to construct the shielding space S. It can be made of one or more metal materials such as iron, steel, copper, aluminum, aluminum alloy, copper alloy, etc. to form a suitable configuration and size as needed to meet the application requirements of the electronic device 200. For example, it can be made of steel by stamping process and the thickness range is 1-5mm. The shielding cover 20 has an opening 24 leading to the inside of the shielding cover. The electronic device 200 can be arranged in the inner cavity of the shielding cover 20 through the opening 24, and the inner cavity will constitute a part of the shielding space S. The opening 24 of the shielding cover 20 is smaller than the opening 14 of the housing 10. When assembling the electromagnetic shielding box assembly 100, the opening 24 and the opening 14 can be arranged in the same direction, and the two openings are closed by the shielding cover 30.

[0033] As an optional situation, at least a portion of the outer surface of the bottom of the shielding cover 20 can be glued and fixed to the inner surface of the shell 10, so as to further enhance the structural stability of the shielding box, thereby providing a safer and more reliable working space for the electronic device 200. It should be understood by those skilled in the art that no matter the bottom of the shielding cover 20, the bottom of the shell 10, or the top of the shielding cover 30, they are all allowed to have a planar or non-planar structure, for example, the bottom of the shielding cover 20 and / or the shell 10 can be configured into a stepped shape, so as to fully adapt to the different configurations of various possible components arranged on the circuit board 202 of the electronic device 200.

[0034] The shielding cover 30 can be made of the same or different metal material as the shielding case 20. When it is covered on the housing 10, the housing opening 14 can be closed by the shielding cover 30 after the assembly portion 32 and the joint portion 12 discussed above are joined. As an optional configuration, the protrusion 31 provided on the shielding cover 30 and the elastic portion 22 provided on the shielding case 20 can cooperate to form an elastic connection structure, which not only realizes the closing operation of the shielding cover 30 for the opening 24 of the shielding case 20, that is, forms a shielding space S defined by the shielding cover 30 and the shielding case 20, thereby realizing a Faraday cage to provide an electromagnetic shielding function, but also can significantly reduce the cooperation force between the shielding cover 30 and the shielding case 20 compared with the prior art, increase the accommodating space of the shielding space S, and is simple to assemble and easy to operate, reducing the manufacturing complexity and cost.

[0035] Specifically, the protrusion 31 and the elastic part 22 can be respectively constructed at appropriate positions of the shielding cover 30 and the shielding case 20. For example, the protrusion 31 can be optionally arranged at a position adjacent to the assembly part 32 to expand the volume of the shielding space S and ensure the structural strength. The elastic part 22 is arranged at the edge position of the shielding case 20, such as the end position of the side of the shielding case 20. It can optionally have one or more bending sections, such as being roughly S-shaped, which can be achieved by, for example, casting or stamping processes, and the elastic deformation ability of the elastic part 22 can be provided by the bending sections. The protrusion 31 can be optionally constructed into a bending structure, for example, it can be obtained by very convenient and low-cost processing through a stamping process, and the specific configuration of the bending structure can be flexibly configured as needed, for example, it can be constructed into a U-shape, a V-shape, an L-shape, a triangle or any other suitable shape. When the shielding cover 20 is arranged inside the shell 10 and then the shielding cover 30 is installed in place relative to the shell 10, the protrusion 31 will press the elastic part 22, for example, by pressing the elastic part 22 through the end or side of the bending structure of the protrusion 31, so that the elastic part 22 generates elastic deformation after being pressed, causing the shielding cover 30 and the shielding cover 20 to abut against each other and close the opening 24 of the shielding cover 20, thereby providing a shielding space S that can be used for electromagnetic shielding.

[0036] With the help of the elastic pressing force formed and maintained between the protruding portion 31 and the elastic portion 22, the shielding cover 30 and the shielding hood 20 can always maintain close contact through such an elastic connection structure, thereby ensuring that the shielding space S has good sealing properties. The electromagnetic shielding box assembly 100 can provide good electromagnetic compatibility for the electronic devices arranged therein, and at the same time can effectively overcome the disadvantages of the hard connection methods commonly used in the prior art (such as bolts, screws or welding, etc.), such as large reverse force, additional installation space, complex manufacturing and high cost.

[0037] According to the scheme of the present application, one or more through holes 11 penetrating the shell can be provided on the shell 10 of the electromagnetic shielding box assembly as required, and one or more elastic parts 21 extending outward from the shielding cover body can be provided on the shielding cover 20. When assembling the electromagnetic shielding box assembly, the elastic parts 21 can be extended through the corresponding through holes 11 so as to elastically abut against the working part 300 arranged outside the shell 10, thereby forming a conductive path from the shielding cover 20 to the working part 300, and such a conductive path can be used to achieve grounding processing, or even can be used to transmit data signals, provide electrical energy, etc.

[0038] For example, in Figures 2 to 4A specific example of the use of the elastic part of the shielding cover in cooperation with the through hole on the shell is given in a partially enlarged schematic manner. Specifically, the elastic part 21 can be constructed to have three parts, namely the first part 211, the second part 212 and the middle part 213. Among them, the middle part 213 is used to connect the first part 211 and the second part 212 and form an arc transition therebetween. On the one hand, this enables the elastic part to better achieve and maintain elastic deformation ability, and on the other hand, it is also conducive to coordinating the overall force and avoiding problems such as stress concentration, so that the elastic part can be used stably and reliably for a long time.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, the elastic part 21 can be integrally formed with the shielding cover 20 (for example, by stamping, casting, etc.), so that the first part 211 extends outward from the shielding cover body. As an optional configuration option, the elastic part 21 can form an inclined angle relative to the shielding cover body, and the specific angle range setting allows for configuration as needed to promote the elastic deformation ability of the elastic part. In addition, the second part 212 of the elastic part 21 can be configured to have a curved section, for example, by bending processing to form an arc-shaped profile or a more complex profile (such as an S-shape, etc.). Reference Figure 1 As shown in the exemplary embodiment, when the second portion 212 of the elastic portion 21 passes through the through hole 11 of the housing 10 and is pressed against the working component 300, for example, against the corresponding portion 310 on the working component 300 (such as the grounding portion, the connection port, etc. on the motor base), the above-mentioned curved section will produce elastic deformation after being pressed, so that the elastic portion 21 portion 42 can be well maintained in continuous pressing contact with the working component 300, thereby forming a stable and reliable conductive path for use by the electromagnetic shielding box assembly, such as for grounding, or transmitting signals or electrical energy, etc. According to application requirements, those skilled in the art can configure the elastic portion 21 to have any suitable shape such as L-shape, S-shape or Z-shape for elastic connection.

[0040] It should be noted that, in one or some embodiments, the present application allows the elastic part 21 to be made separately, and then fixed to the body of the shielding cover 20 by any feasible method such as welding, screw connection, etc., so as to construct a shielding cover with an elastic part. In addition, in one or some embodiments, the present application allows the structure to be simplified and the middle part 213 in the elastic part 21 is omitted, that is, only the first part 211 and the second part 212 are provided. In addition, in one or some embodiments, the present application allows the shielding cover 20 to further form a conductive path with the electronic device 200 through any feasible conductive component form such as a spring, a conductive pin, etc. Since the shielding cover 20 itself adopts conductive materials such as copper and aluminum, a complete conductive path from the electronic device 200 to the working part 300 can be formed by means of the above conductive path and the conductive path provided by the elastic part 21. When applying the present electromagnetic shielding box assembly, such a complete conductive path can be used very conveniently and reliably for purposes such as grounding, transmitting signals or electrical energy, etc. as needed.

[0041] The above only illustrates the electromagnetic shielding box assembly and electromechanical equipment according to the present application in detail by way of example. These examples are only used to illustrate the principle and implementation method of the present application, and do not constitute a limitation on the present application. Without departing from the scope of the present application, those skilled in the art can also make various modifications and improvements. Therefore, all equivalent technical solutions should belong to the scope of the present application and be defined by the claims of the present application.

Claims

1. An electromagnetic shielding box assembly (100), It is characterized in that The invention comprises a shell (10), a shielding cover (20) and a shielding lid (30), wherein the shielding cover (20) is arranged in the shell (10), and the shielding lid (30) is covered on the shell (10) and the shielding cover (20), so as to form a shielding space (S) for arranging an electronic device (200) therein, wherein the shell (10) has at least one through hole (11) penetrating the shell, and the shielding cover (20) has at least one first elastic part (21), and the first elastic part (21) extends outward from the body of the shielding cover (20) through the through hole (11) and then elastically abuts against a working part (300) located outside the shell (10), thereby forming a conductive path from the shielding cover (20) to the working part (300).

2. The electromagnetic shielding box assembly (100) according to claim 1, in, The first elastic portion (21) comprises a first part (211) and a second part (212), wherein the first part (211) is connected to the main body of the shielding cover (20), and the second part (212) is connected to the first part (211) and has a curved section, wherein the curved section generates elastic deformation when abutting against the working component (300).

3. The electromagnetic shielding box assembly (100) according to claim 2, in, The first part (211) extends obliquely relative to the main body of the shielding cover (20), and / or the first elastic part (21) also includes a middle part (213), and the middle part (213) is connected and arranged between the first part (211) and the second part (212) to form an arc transition.

4. The electromagnetic shielding box assembly (100) according to claim 1, in, The first elastic portion (21) is integrally formed with the body of the shielding cover (20), and / or at least a portion of the bottom outer surface of the shielding cover (20) is adhesively bonded to the inner surface of the outer shell (10), and / or the shielding cover (20) and the shielding cover (30) are made of the same or different metal materials and the outer shell (10) is made of insulating material.

5. The electromagnetic shielding box assembly (100) according to any one of claims 1 to 4, in, The housing (10) comprises a joint portion (12), a first through hole (13) and a first opening (14) leading to the inner cavity of the housing (10); the shielding cover (20) comprises a second elastic portion (22), a second through hole (23) and a second opening (24) leading to the inner cavity of the shielding cover (20); the second opening (24) is smaller than the first opening (14) and is arranged in the same direction as the first opening (14); the shielding cover (30) comprises a protruding portion (31) and a protruding portion (31) matingly engaged with the joint portion (12) The assembly portion (32) includes a shielding cover (30) and a mounting portion (32). After the assembly portion (32) and the mounting portion (12) are mounted, the shielding cover (30) closes the first opening (14), and the protruding portion (31) presses against the second elastic portion (22) to generate elastic deformation, so that the shielding cover (30) and the shielding hood (20) abut against each other to close the second opening (24), and when the electronic device (200) is arranged in the shielding space (S), it is electrically connected to the outside via the second through hole (23) and the first through hole (13).

6. The electromagnetic shielding box assembly (100) according to claim 5, in, The protruding portion (31) and / or the assembly portion (32) are configured as a bent structure, the bent structure end of the protruding portion (31) presses against the second elastic portion (22), and / or the assembly portion (32) is configured as a groove shape and is arranged adjacent to the protruding portion (31), and / or the protruding portion (31) is integrally formed with the body of the shielding cover (30), and / or the joining portion (12) is arranged at the end of the side of the housing (10), and / or the joining portion (12) and the assembly portion (32) are adhesively bonded.

7. The electromagnetic shielding box assembly (100) according to claim 5, in, The first through hole (13) and the second through hole (23) are respectively arranged at the bottom of the housing (10) and the shielding cover (20), respectively. The electronic device (200) includes a circuit board (202) provided with a plug port (201), and the plug port (201) is electrically connected to the outside via the second through hole (23) and the first through hole (13).

8. An electromechanical device, It is characterized in that include: The electromagnetic shielding box assembly (100) according to any one of claims 1 to 7; An electronic device (200) arranged in the shielding space (S) of the electromagnetic shielding box assembly (100), wherein the electronic device (200) is insulated and spaced apart from the shielding case (20) and the shielding cover (30); as well as A working component (300) is located outside the housing (10) and connected to the housing (10); the first elastic portion (21) of the shielding cover (20) elastically abuts against the working component (300) to form a conductive path from the shielding cover (20) to the working component (300).

9. The electromechanical device according to claim 8, in, The conductive path is used for grounding connection, and the working component (300) is also electrically connected to the electronic device (200) via a first through hole (13) provided on the housing (10) and a second through hole (23) provided on the shielding cover (20) so as to receive an output signal from the electronic device (200) for operation.

10. An electromechanical device according to claim 8 or 9, in, The working component (300) includes a motor, and the electronic device (200) includes an ECU.

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