Anti-vibration reinforced safety capacitor

Abstract

The utility model relates to the technical field of safety capacitor, concretely is a kind of anti-seismic reinforced safety capacitor, including capacitor body, capacitor body electrically connected with lead, lead root is connected with porous sponge, porous sponge outside is fixedly connected with silica gel cover, silica gel cover outside is adhered with metal bellows, and silica gel cover upper end is fixedly connected with capacitor body;The opening structure of porous sponge can be vibrated to force air to flow between pores, generate viscous resistance energy consumption, the closed cell structure can absorb energy in the process of bubble compression and expansion, the mechanical stress buffer of silica gel cover for encapsulation and lead, while metal bellows is fixedly installed outside silica gel cover, and corrugated structure can absorb multidirectional vibration energy by periodic deformation, and vibration load will be dispersed to multiple bellows units, avoid local stress concentration, so as to protect lead root not to be caused by mechanical vibration Metal fatigue fracture, and stress can be dispersed simultaneously.

Description

Technical Field

[0001] This utility model relates to a seismically reinforced safety capacitor, and more particularly to a seismically reinforced safety capacitor, belonging to the technical field of safety capacitors. Background Technology

[0002] Safety capacitors are capacitors that will not cause electric shock or endanger personal safety if they fail. They are usually used for filtering in anti-interference circuits. They are used in power filters to filter common-mode and differential-mode interference. For safety and EMC considerations, it is generally recommended to add a safety capacitor at the power input.

[0003] Analysis of existing safety capacitors revealed two main failure risks: First, under long-term mechanical vibration, the root of the lead wire is prone to metal fatigue cracks due to periodic stress, eventually leading to fracture failure. Second, when the capacitor is subjected to accidental bending, the stress concentration effect will cause the lead wire to bear excessive mechanical load, significantly increasing the risk of instantaneous fracture.

[0004] Therefore, there is an urgent need to improve a seismically reinforced safety capacitor to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a shock-resistant and reinforced safety capacitor that can not only suppress metal fatigue fracture at the root of the lead caused by mechanical vibration, but also avoid stress concentration.

[0006] To achieve the above objectives, the main technical solution adopted by this utility model includes: a seismic-resistant and reinforced safety capacitor, comprising a capacitor body, wherein the capacitor body is electrically connected to a lead wire, a porous sponge is connected to the root of the lead wire, a silicone sleeve is fixedly connected to the outside of the porous sponge, a metal corrugated tube is bonded to the outside of the silicone sleeve, and the upper end of the silicone sleeve is fixedly connected to the capacitor body.

[0007] Preferably, the porous sponge has an annular groove, and a raised ring is fixedly installed on the lead wire, the raised ring being connected to the annular groove.

[0008] Preferably, the capacitor body is provided with a first outer shell and a second outer shell on its outer side, and the capacitor body is located between the first outer shell and the second outer shell.

[0009] Preferably, a compression block is fixedly installed on one side of the first outer shell, and the width of the compression block on the side closer to the first outer shell is greater than that on the side farther away from the first outer shell.

[0010] Preferably, both the first outer shell and the second outer shell have limiting holes, and both the first outer shell and the second outer shell have extension shells fixedly installed at their lower ends.

[0011] Preferably, the lower end of the silicone sleeve is connected to the extension shell, and the lead wire extends to the outside of the extension shell.

[0012] Preferably, the second outer casing has placement slots on both sides, and a sliding plate is provided in the placement slot. The sliding plate is slidably connected to the placement slot through a sliding groove.

[0013] Preferably, a spring is fixedly installed at one end of the sliding plate, and the end of the spring away from the sliding plate is fixedly connected to the inner wall of the placement groove.

[0014] Preferably, a limit rod is fixedly installed at the end of the sliding plate away from the spring.

[0015] Preferably, the limiting rod is slidably connected to the limiting hole.

[0016] This utility model has at least the following beneficial effects: 1. By setting the open-pore structure of the porous sponge, vibration forces air to flow between the pores, generating viscous resistance to dissipate energy. The closed-pore structure can absorb energy during the compression and expansion process of the air bubbles. During rapid vibration, the gas inside the pores is compressed and heated, converting mechanical energy into heat energy for dissipation. The silicone sleeve is made of liquid silicone and is used to buffer the mechanical stress between the package and the lead wire. At the same time, a metal bellows is fixedly installed on the outside of the silicone sleeve. The bellows structure can absorb multi-directional vibration energy through periodic deformation, and the vibration load is distributed to multiple bellows units to avoid local stress concentration. This protects the lead wire root from metal fatigue fracture caused by mechanical vibration and can also disperse stress.

[0017] 2. When the staff connects the first outer shell and the second outer shell, one end of the extrusion block will be squeezed between the sliding plate and the placement groove, causing the spring to be stretched. At this time, due to the pushing force of the extrusion block, the sliding plate slides towards the limiting rod, thereby causing the limiting rod to move outward of the second outer shell. Then, the limiting rod can pass through the limiting hole opened on the first outer shell and the second outer shell, thus completing the connection between the first outer shell and the second outer shell. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of a shock-resistant and reinforced safety capacitor according to an embodiment of the present utility model; Figure 2This is a schematic diagram of the structure of a seismically reinforced safety capacitor body in an embodiment of this utility model. Figure 3 This is a schematic diagram of the first outer shell structure of a shock-resistant and reinforced safety capacitor according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the second shell structure of a seismically reinforced safety capacitor according to an embodiment of the present invention; Figure 5 This is a schematic diagram showing the disassembly of the metal bellows and leads of a seismically reinforced safety capacitor according to an embodiment of this utility model.

[0019] In the figure, 1. Capacitor body; 2. Lead wire; 201. Protruding ring; 3. Silicone sleeve; 4. Porous sponge; 5. Metal bellows; 6. Ring groove; 7. First outer shell; 8. Second outer shell; 9. Extrusion block; 10. Limiting hole; 11. Placement groove; 12. Sliding plate; 13. Spring; 14. Limiting rod; 15. Extension shell. Detailed Implementation

[0020] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] Examples, such as Figures 1-5 As shown, a seismic-resistant and reinforced safety capacitor includes a capacitor body 1, an electrically connected lead wire 2 to the capacitor body 1, a porous sponge 4 connected to the root of the lead wire 2, a silicone sleeve 3 fixedly connected to the outside of the porous sponge 4, a metal corrugated tube 5 bonded to the outside of the silicone sleeve 3, and the upper end of the silicone sleeve 3 fixedly connected to the capacitor body 1. The porous sponge 4 has an annular groove 6, and a raised ring 201 is fixedly installed on the lead wire 2. The raised ring 201 is connected to the annular groove 6. By connecting the porous sponge 4 to the root of the lead wire 2, the open structure of the porous sponge 4 can vibrate to force air to flow between the pores, generating viscous resistance to dissipate energy. The closed structure can absorb energy during the compression and expansion process of the air bubble, and during rapid vibration, the gas in the pores is compressed and heated, converting mechanical energy into heat energy for dissipation. That is, the open structure absorbs high-frequency vibration, and the closed structure resists compression. It should be noted that the porosity of the porous sponge 4 needs to be controlled between 30% and 50%. Meanwhile, a silicone sleeve 3 is fixedly connected to the outside of the porous sponge 4. The silicone sleeve 3 is made of liquid silicone and is used to buffer the mechanical stress between the encapsulation body and the lead wire 2. Meanwhile, a metal bellows 5 is fixedly installed on the outside of the silicone sleeve 3. The metal bellows 5 is an insulating material, and the corrugated structure can absorb multi-directional vibration energy through periodic deformation. In the axial direction, the corrugation peaks and valleys are compressed / stretched to absorb longitudinal vibration; in the radial direction, the corrugation bends laterally to resist lateral sway. At the same time, the higher the corrugation density, the greater the dynamic stiffness, which can be specifically matched to different vibration frequencies. The vibration load will be distributed to multiple corrugated units to avoid local stress concentration, thereby protecting the root of the lead wire 2 from metal fatigue fracture caused by mechanical vibration, and at the same time, it can disperse stress.

[0022] like Figures 1-4 As shown, further, a first outer shell 7 and a second outer shell 8 are provided on the outside of the capacitor body 1. The capacitor body 1 is located between the first outer shell 7 and the second outer shell 8. A compression block 9 is fixedly installed on one side of the first outer shell 7. The width of the compression block 9 on the side closer to the first outer shell 7 is larger than that on the side farther away from the first outer shell 7. By setting the capacitor body 1 between the first outer shell 7 and the second outer shell 8, the first outer shell 7 and the second outer shell 8 can protect the capacitor body 1 and transfer the vibration stress at the root of the lead wire 2 to the first outer shell 7 and the second outer shell 8, thereby reducing the mechanical load borne by the package by more than 70% while keeping the electrical performance of the safety capacitor unaffected.

[0023] like Figures 3-4 As shown, further, both the first outer shell 7 and the second outer shell 8 have limiting holes 10. Both the first outer shell 7 and the second outer shell 8 have extension shells 15 fixedly installed at their lower ends. The lower end of the silicone sleeve 3 is connected to the extension shell 15. The lead wire 2 extends to the outside of the extension shell 15. By fixing the extension shell 15 at the lower ends of both the first outer shell 7 and the second outer shell 8, the extension shell 15 can cover the root of the lead wire 2, protect the root of the lead wire 2, and transfer the vibration stress at the root of the lead wire 2 to the body of the first outer shell 7 and the second outer shell 8.

[0024] like Figures 3-4 As shown, further, the second outer shell 8 has placement grooves 11 on both sides, and a sliding plate 12 is provided in the placement groove 11. The sliding plate 12 is slidably connected to the placement groove 11 through a sliding groove. A spring 13 is fixedly installed at one end of the sliding plate 12. The end of the spring 13 away from the sliding plate 12 is fixedly connected to the inner wall of the placement groove 11. A limit rod 14 is fixedly installed at the end of the sliding plate 12 away from the spring 13. The limit rod 14 is slidably connected to the limit hole 10. When the operator connects the first outer shell 7 and the second outer shell 8, one end of the extrusion block 9 will be squeezed between the sliding plate 12 and the placement groove 11, so that the spring 13 is stretched. At this time, the sliding plate 12 is pushed by the extrusion block 9, so that the sliding plate 12 slides towards the limit rod 14, thereby the limit rod 14 moves to the outside of the second outer shell 8. Then the limit rod 14 can pass through the limit hole 10 opened on the first outer shell 7 and the second outer shell 8, so that the first outer shell 7 and the second outer shell 8 are connected.

[0025] In this embodiment, as Figures 1-4 As shown in the figure, the principle of the seismically reinforced safety capacitor provided in this embodiment is as follows: The open-pore structure of the porous sponge 4 allows vibration to force air to flow between the pores, generating viscous resistance and consuming energy. The closed-pore structure can absorb energy during the compression and expansion of the air bubbles. During rapid vibration, the gas inside the pores is compressed and heated, converting mechanical energy into heat energy that dissipates. The silicone sleeve 3 is made of liquid silicone and is used to buffer the mechanical stress between the encapsulation body and the lead wire 2. At the same time, a metal corrugated tube 5 is fixedly installed on the outside of the silicone sleeve 3. The corrugated structure can absorb multi-directional vibration energy through periodic deformation, and the vibration load will be distributed to multiple corrugated units to avoid local stress concentration. This protects the root of the lead wire 2 from metal fatigue fracture caused by mechanical vibration and also disperses stress.

[0026] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0028] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A seismically reinforced safety capacitor, comprising a capacitor body (1), characterized in that: The capacitor body (1) is electrically connected to a lead wire (2), and a porous sponge (4) is connected to the root of the lead wire (2). A silicone sleeve (3) is fixedly connected to the outside of the porous sponge (4), and a metal corrugated tube (5) is bonded to the outside of the silicone sleeve (3). The upper end of the silicone sleeve (3) is fixedly connected to the capacitor body (1).

2. The seismically reinforced safety capacitor according to claim 1, characterized in that: The porous sponge (4) has an annular groove (6), and a raised ring (201) is fixedly installed on the lead wire (2). The raised ring (201) is connected to the annular groove (6).

3. The seismically reinforced safety capacitor according to claim 1, characterized in that: The capacitor body (1) is provided with a first outer shell (7) and a second outer shell (8) on its outer side, and the capacitor body (1) is located between the first outer shell (7) and the second outer shell (8).

4. The seismically reinforced safety capacitor according to claim 3, characterized in that: A compression block (9) is fixedly installed on one side of the first outer shell (7). The compression block (9) is wider on the side closer to the first outer shell (7) than on the side farther away from the first outer shell (7).

5. The seismically reinforced safety capacitor according to claim 4, characterized in that: Both the first outer shell (7) and the second outer shell (8) have limit holes (10), and both the first outer shell (7) and the second outer shell (8) have extension shells (15) fixedly installed at their lower ends.

6. The seismically reinforced safety capacitor according to claim 5, characterized in that: The lower end of the silicone sleeve (3) is connected to the extension shell (15), and the lead wire (2) extends to the outside of the extension shell (15).

7. A seismically reinforced safety capacitor according to claim 6, characterized in that: The second outer shell (8) has placement slots (11) on both sides, and a sliding plate (12) is provided in the placement slot (11). The sliding plate (12) is slidably connected to the placement slot (11) through a sliding groove.

8. The seismically reinforced safety capacitor according to claim 7, characterized in that: A spring (13) is fixedly installed at one end of the sliding plate (12), and the end of the spring (13) away from the sliding plate (12) is fixedly connected to the inner wall of the placement groove (11).

9. A seismically reinforced safety capacitor according to claim 8, characterized in that: A limit rod (14) is fixedly installed on the end of the sliding plate (12) away from the spring (13).

10. A seismically reinforced safety capacitor according to claim 9, characterized in that: The limiting rod (14) is slidably connected to the limiting hole (10).

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