Anti-interference shielding structure and method of capacitor outgoing line

Abstract

The invention provides an anti-interference shielding structure and method for a capacitor outgoing line, and belongs to the technical field of capacitors. Comprising a PCB, a capacitor body and a wrapping assembly, the capacitor body is detachably connected to the outside of the PCB, the wrapping assembly is detachably connected to the outside of the capacitor body, and the capacitor body is used for conducting self-adaptive wrapping connection on the capacitor body and shielding internal and external radiation noise in the operation process of the capacitor body; and the shielding assembly is detachably connected to the bottom of the coating assembly. According to the invention, the device can be fixed outside capacitor main bodies of various models and sizes to form a main body shielding effect through the arrangement of the coating assembly, reduces the interference of external high-frequency electromagnetic waves, radio frequency noise and the like, and can carry out coating type interference shielding on the pins of the capacitor main body through the arrangement of the shielding assembly. The shielding effect is prevented from being affected by separation, and radiation noise of the leads or crosstalk between the two leads and coupling interference between the two leads are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitors, and in particular to an anti-interference shielding structure and method for capacitor lead wires. Background Art

[0002] A capacitor is an electronic component that uses electric fields to store energy. It consists of two insulated conductors (plates) and a dielectric medium, storing and releasing electrical energy through charge separation. Its core principle is based on electrostatic induction, and its energy storage capacity is measured by capacitance (unit: farad).

[0003] Capacitor interference and hazards arise from the interaction between their parasitic parameters and the circuit environment. In high-frequency or high-power scenarios, the equivalent series resistance and inductance of capacitors can cause resonance, resulting in voltage spikes, waveform distortion, and radiated electromagnetic interference. Strong electromagnetic fields can couple interference through capacitor pins, causing false triggering of control logic or communication data errors. Long-term interference can cause capacitor overheating, dielectric degradation, and even insulation breakdown, threatening the safe operation of equipment in severe cases.

[0004] Existing methods for shielding capacitor lead wires against interference often involve shortening the lead length or grounding them with metal foil. However, these methods are inconvenient to operate, and contact between the metal foils can create low-impedance conductive paths, leading to power or signal shorts and disrupting circuit functionality. The shielding effect can be easily damaged by accident. Therefore, this application provides an anti-interference shielding structure and method for capacitor lead wires to meet these needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an anti-interference shielding structure and method for capacitor lead wires to solve the existing problems.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A structure and method for shielding capacitor leads against interference, comprising a PCB, a capacitor body, and a covering assembly. The capacitor body is detachably connected to the outside of the PCB, and the covering assembly is detachably connected to the outside of the capacitor body. The capacitor body is used to adaptively wrap around the capacitor body and shield internal and external radiated noise during operation.

[0008] The shielding component is detachably connected to the bottom of the covering component. The shielding component is used to cover the capacitor main pins to form a complete shield and connect the covering component to the PCB board to prevent falling off. The shielding component is an annular belt as a whole.

[0009] Optionally, the covering assembly includes a center plate, a bottom plate, a top plate and a metal foil. A straight slide groove is opened inside the center plate. The bottom plate and the top plate are respectively disassembled and connected inside the straight slide groove. The metal foil is covered by the center plate, the bottom plate and the top plate between the covering assembly and the capacitor body.

[0010] Optionally, claw plates are provided on the outside of the bottom plate and the top plate, and the ends of the claw plates are all facing the inside of the straight slide groove. There are multiple groups of straight slide grooves and they are evenly distributed on the inner side of the center plate. The number of claw plates corresponds to the number of straight slide grooves.

[0011] Optionally, the center plate, bottom plate and top plate are all provided with extended guard plates on the outside. There are two groups of extended guard plates and they are symmetrically distributed on both sides of the center plate, bottom plate and top plate. The center plate is symmetrically provided with pressure covering plates on the outside, and a ground welding plate is provided on the top of the top plate.

[0012] Optionally, there are two groups of the center plate, bottom plate and top plate and they are symmetrically distributed outside the capacitor body. A plurality of embedding grooves are evenly opened on the outside of the center plate, and rubber bands are detachably connected to the outside of the embedding grooves for interconnection.

[0013] Optionally, a nail plate is provided at the bottom of the base plate, and the shielding component is punctured and connected to the outside of the nail plate. The shielding component includes a heat shrinkable layer, a shielding layer, an insulating layer and an inner rubber layer. The shielding component connects the covering component and the PCB board to each other.

[0014] Optionally, the inner rubber layer is arranged at the innermost layer of the shielding assembly, the insulating layer is arranged at the outer layer of the inner rubber layer, the income tax shielding layer is arranged at the outer layer of the insulating layer, and the heat shrinkable layer is arranged at the outermost layer of the shielding assembly, and the inner rubber layers are symmetrically and tightly attached to each other.

[0015] Optionally, an anti-slip layer is provided on the inner side of the inner rubber layer in the capacitor main body pin area, the anti-slip layer is used to increase friction with the capacitor main body pin, and an adhesive ring is provided at the bottom of the shielding component.

[0016] Optionally, the method includes the following steps: when the capacitor body is welded close to the PCB board, the pins are short and the interference caused is negligible. At this time, the claw plates on the outside of the bottom plate and the top plate are installed in the straight sliding groove inside the center plate, and the metal foil is covered on the outside of the capacitor body for covering. The unit composed of the center plate, the bottom plate and the top plate can be placed on both sides of the metal foil for clamping, and then the bottom plate and the top plate are pressed to complete the mutual locking with the capacitor body. Finally, a rubber band is installed on the outside of the embedded groove for fixation, and the locking is completed by increasing the friction through the pressure of the rubber band. If the pins of the capacitor body need to be left long due to installation, the external interference and the radiation noise generated by itself are large. On the basis of the above, the shielding component is connected to the outside of the capacitor body pins through the nail plate. After aligning with the anti-slip layer, the inner rubber layers are made to stick to each other to complete the adhesion and fixation. At the same time, the adhesive ring and the PCB board are pressed to complete the connection to prevent the shielding component from shrinking and leaking.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, by providing a covering component, the device can be fixed on the outside of capacitor bodies of various models and sizes to form a main body shielding effect, thereby reducing interference from external high-frequency electromagnetic waves, radio frequency noise, etc.

[0019] By setting up a shielding component, the device can wrap the capacitor main pins for interference shielding, and connect the covering component with the shielding component to avoid detachment affecting the shielding effect, complete grounding, and reduce the lead's own radiation noise or crosstalk between the two leads and the coupling interference between the two leads. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0021] Figure 1 This is a schematic diagram of the overall appearance of the anti-interference shielding structure of the capacitor lead wire;

[0022] Figure 2 This is a separation diagram of the internal structure of the anti-interference shielding structure of the capacitor lead wire;

[0023] Figure 3 An exploded view of the internal structure of the cladding component;

[0024] Figure 4 This is an anatomical diagram of the internal structure of the shielding component.

[0025] 1. PCB board; 2. Capacitor body; 3. Covering assembly; 301. Center board; 302. Bottom board; 303. Top board; 304. Extended guard plate; 305. Metal foil; 306. Straight slide groove; 307. Ground wire welding plate; 308. Claw board; 309. Nail board; 310. Pressed cover board; 311. Embedded groove; 312. Rubber band; 4. Shielding assembly; 401. Heat shrink layer; 402. Shielding layer; 403. Insulation layer; 404. Inner rubber layer; 405. Anti-slip layer; 406. Adhesive ring.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0027] The following describes a medical transport bed provided by the present invention in detail with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0028] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0029] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0030] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0031] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0032] like Figures 1 to 4 As shown, the embodiment of the present invention provides an anti-interference shielding structure and method for capacitor lead wires, including a PCB board 1, a capacitor body 2, and a covering component 3. The capacitor body 2 is detachably connected to the outside of the PCB board 1, and the covering component 3 is detachably connected to the outside of the capacitor body 2. The capacitor body 2 is used to adaptively wrap the capacitor body 2 and shield internal and external radiated noise during the operation of the capacitor body 2.

[0033] Shielding component 4, the shielding component 4 is disassembled and connected to the bottom of the covering component 3. The shielding component 4 is used to cover the pins of the capacitor body 2 to form a complete shield and connect the covering component 3 and the PCB board 1 to each other to prevent falling off. The shielding component 4 is an annular belt as a whole.

[0034] When the capacitor body 2 is welded close to the PCB board 1, the pins are short at this time and the interference caused is negligible. At this time, the claw plates 308 on the outside of the bottom plate 302 and the top plate 303 are installed opposite to each other in the straight slide groove 306 inside the center plate 301, and the metal foil 305 is put on the outside of the capacitor body 2 for coating. Then, the unit composed of the center plate 301, the bottom plate 302 and the top plate 303 can be placed on both sides of the metal foil 305 to clamp the capacitor body 2. Then, the bottom plate 302 and the top plate 303 are pressed to complete the mutual locking with the capacitor body 2, thereby completing the wrapping and locking of the metal foil 305. Finally, a rubber band 312 is installed on the outside of the embedded groove 311 for fixing. The pressure of the rubber band 312 increases the friction to complete the overall installation of the device. If the pins of the capacitor body 2 need to be left long or external leads are required for installation, When the line is outgoing, the external interference and the radiation noise generated by itself are relatively large. On the basis of the above, the shielding component 4 is sleeved on the outside of the lead wire of the capacitor main body 2 through the nail plate 309. After the anti-slip layer 405 on the opposite side is aligned with the lead wire of the capacitor main body 2, the inner rubber layer 404 is tightly attached to each other to complete the adhesion and fixation. At the same time, the adhesive ring 406 and the PCB board 1 are tightly attached to each other to complete the connection. Subsequently, the ground wire and the ground wire welding plate 307 are welded to each other to complete the grounding connection. In the actual operation process, the actual length of the shielding component 4 is cut according to the length of the lead wire. The covering component 3 itself is hollow, and the metal foil 305 wrapped around it can play the role of heat conduction and heat dissipation. Its own function is to shield interference such as electromagnetic and radio frequency, so that pollution such as harmonics is further reduced, and at the same time, excessive heat generation during the operation of the capacitor main body 2 is reduced.

[0035] In this embodiment, if Figures 1 to 4 It is shown that during the operation of the capacitor body 2, the outside of the capacitor body 2 is covered with a metal foil 305, and some distance is reserved near the pins of the capacitor body 2 to prevent contact short circuit. The pressure generated by the rubber band 312 between the covering component 3 and the capacitor body 2 is added to the outside of the metal foil 305 to generate additional friction, and the bottom plate 302 and the top plate 303 are constrained by the pressure plate 310 outside the center plate 301, and the movement range of the bottom plate 302 and the top plate 303 is limited by the straight slide groove 306 to prevent the device from slipping due to excessive movement. The covering range of the covering component 3 is adjusted by moving the bottom plate 302 and the top plate 303 to adapt to the installation of capacitor bodies 2 of different sizes. The shielding component 4 is connected to the shielding layer 402 by puncturing the nail plate 309. After the installation is completed, the shielding component 4 is tightened by shrinking the whole body through high temperature to ensure the tightness of the device connection.

[0036] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An anti-interference shielding structure for a capacitor lead wire, characterized in that: The invention comprises a PCB board (1), a capacitor body (2), and a covering component (3), wherein the capacitor body (2) is detachably connected to the outside of the PCB board (1), and the covering component (3) is detachably connected to the outside of the capacitor body (2), and the capacitor body (2) is used to adaptively wrap the capacitor body (2) and shield internal and external radiation noise during the operation of the capacitor body (2); A shielding component (4) is detachably connected to the bottom of the covering component (3), and is used to cover the pins of the capacitor body (2) to form a complete shield and to connect the covering component (3) and the PCB board (1) to each other to prevent them from falling off. The shielding component (4) is in the form of an annular belt as a whole.

2. The anti-interference shielding structure of a capacitor lead wire according to claim 1, characterized in that: The covering assembly (3) comprises a central plate (301), a bottom plate (302), a top plate (303) and a metal foil (305); a straight slide groove (306) is provided inside the central plate (301); the bottom plate (302) and the top plate (303) are respectively detachably connected inside the straight slide groove (306); and the metal foil (305) is covered by the central plate (301), the bottom plate (302) and the top plate (303) between the covering assembly (3) and the capacitor body (2).

3. The anti-interference shielding structure of a capacitor lead wire according to claim 2, characterized in that: The bottom plate (302) and the top plate (303) are both provided with claw plates (308) on the outside, and the ends of the claw plates (308) are all facing the inside of the straight slide groove (306). There are multiple groups of straight slide grooves (306) and they are evenly distributed on the inside of the center plate (301). The number of the claw plates (308) corresponds to the number of the straight slide grooves (306).

4. The anti-interference shielding structure of a capacitor lead wire according to claim 2, characterized in that: The center plate (301), the bottom plate (302) and the top plate (303) are all provided with extension guard plates (304) on the outside. There are two groups of extension guard plates (304) symmetrically distributed on both sides of the center plate (301), the bottom plate (302) and the top plate (303). The center plate (301) is symmetrically provided with pressure covering plates (310) on the outside. A ground wire welding plate (307) is provided on the top of the top plate (303).

5. The anti-interference shielding structure of a capacitor lead wire according to claim 4, characterized in that: The center plate (301), the bottom plate (302) and the top plate (303) are provided in two groups and are symmetrically distributed outside the capacitor body (2). The center plate (301) is provided with multiple groups of embedded grooves (311) evenly arranged outside. The embedded grooves (311) are connected to each other by rubber bands (312) that can be disassembled.

6. The anti-interference shielding structure of a capacitor lead wire according to claim 4, characterized in that: A nail plate (309) is provided at the bottom of the base plate (302), and the shielding component (4) is punctured and connected to the outside of the nail plate (309). The shielding component (4) includes a heat shrinkable layer (401), a shielding layer (402), an insulating layer (403) and an inner rubber layer (404). The shielding component (4) connects the covering component (3) and the PCB board (1) to each other.

7. The anti-interference shielding structure of a capacitor lead wire according to claim 6, characterized in that: The inner rubber layer (404) is arranged at the innermost layer of the shielding component (4), the insulating layer (403) is arranged at the outer layer of the inner rubber layer (404), the income tax shielding layer (402) is arranged at the outer layer of the insulating layer (403), and the heat shrinkable layer (401) is arranged at the outermost layer of the shielding component (4), and the inner rubber layers (404) are symmetrically and tightly attached to each other.

8. The anti-interference shielding structure of a capacitor lead wire according to claim 6, characterized in that: An anti-slip layer (405) is provided on the inner side of the inner rubber layer (404) in the area of ​​the pins of the capacitor body (2), and the anti-slip layer (405) is used to increase friction with the pins of the capacitor body (2). An adhesive ring (406) is provided at the bottom of the shielding component (4).

9. The anti-interference shielding process for capacitor lead wires according to claims 1-8, characterized in that: The method comprises the following steps: when the capacitor body (2) is welded against the PCB (1), the pins are relatively short and the interference caused is negligible; at this time, the claw plates (308) outside the bottom plate (302) and the top plate (303) are installed inside the straight slide groove (306) inside the center plate (301); a metal foil (305) is put on the outside of the capacitor body (2) for covering; the unit composed of the center plate (301), the bottom plate (302) and the top plate (303) is placed on both sides of the metal foil (305) for clamping; and then the bottom plate (302) and the top plate (303) are pressed to complete the connection with the capacitor body (2). The components (311) are locked to each other, and finally a rubber band (312) is installed outside the embedded groove (311) for fixing. The locking is completed by increasing the friction through the pressure of the rubber band (312). If the pins of the capacitor body (2) need to be left long due to installation, the external interference and the radiation noise generated by itself are relatively large. On the basis of the above, the shielding component (4) is sleeved on the outside of the pins of the capacitor body (2) through the nail plate (309). After being aligned with the anti-slip layer (405), the inner rubber layer (404) is made to stick together to complete the sticking and fixing. At the same time, the adhesive ring (406) and the PCB board (1) are made to stick together to complete the connection to prevent the shielding component (4) from shrinking and leaking.

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