Self-protection capacitor

Abstract

The utility model discloses a self-protection type capacitor, which relates to the technical field of capacitor protection and comprises a substrate, a mounting seat is fixedly mounted on the front surface of the substrate, buffer mechanisms are fixedly mounted at the upper end and the lower end of the mounting seat, and connecting assemblies are arranged on the inner sides of the buffer mechanisms. The inner side of the buffer mechanism is provided with a capacitor body through a connecting assembly. With the adoption of the structure, when the capacitor is mounted during use, the sliding plate is inserted into the mounting groove, and the second screw rod is rotated to move inwards, so that the capacitor can be quickly and stably mounted, the steps are simple and convenient, and the buffer springs and the dampers which are arranged at equal intervals play a role in a synergistic manner during daily operation; because the first circular plate and the second circular plate are hinged, the buffer force is focused to the middle part of the capacitor by the spring or stretching or compression, cooperating with the damper and the hinged ball, no matter where the impact direction is, the impact is resisted, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor protection technology, and specifically relates to a self-protecting capacitor. Background Technology

[0002] A capacitor is an important electronic component that plays a crucial role in circuits. It consists of two conductors close to each other but insulated from each other, called plates, and an insulating material called a dielectric. Its basic working principle is to store electrical energy using an electric field. When a voltage is applied between the two plates of a capacitor, equal amounts of opposite charges accumulate on the plates, thus storing electrical energy. The higher the voltage, the more charge is stored. In circuits, capacitors have a wide range of applications. They can be used for filtering, removing the AC component from direct current to make the current smoother and more stable, ensuring the normal operation of electronic devices. They can also be used for coupling, enabling the effective transmission of signals between upstream and downstream circuits while blocking DC components. In addition, in oscillating circuits, they work in conjunction with inductors to generate oscillation signals of a specific frequency, providing the required frequency reference for many electronic devices such as radios and mobile phones. They are an indispensable basic component of modern electronic technology.

[0003] Chinese Patent No. CN208985865U discloses a self-protected capacitor, which includes an aluminum shell, a cover plate, an overload protector, a pressure valve, a guide foil strip, a core package, an insulating layer, a buffer pad, and a mounting plate. The aluminum shell is a cylindrical structure and is integrally formed. The top of the aluminum shell is seamlessly connected to the cover plate. This self-protected capacitor addresses the poor heat dissipation performance of traditional shells by replacing them with aluminum shells, which provides excellent heat dissipation. This ensures that the heat generated inside the capacitor can be quickly dissipated through the aluminum shell, preventing abnormal consumption of the capacitor due to internal overheating and effectively extending the service life of the entire capacitor.

[0004] Current capacitor devices have a certain heat dissipation capacity and can meet basic operating conditions, but there are problems in their use: on the one hand, they lack short-circuit protection and buffer structures. When subjected to vibration during daily operation, the lack of a buffer structure to disperse the impact force can easily damage the internal electronic components and affect the operation of the device; on the other hand, they lack a short-circuit protection structure and cannot contain large currents and high heat. The internal circuits are prone to short-term burnout, causing equipment shutdown and safety hazards. It is evident that existing capacitors have defects and need to be improved to enhance their reliability and stability. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a self-protecting capacitor to solve the problem of poor overall protection capability during the application of the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A self-protected capacitor includes a substrate, a mounting base fixedly mounted on the front side of the substrate, buffer mechanisms fixedly mounted on both the upper and lower ends of the mounting base, a connecting component provided on the inner side of the buffer mechanism, a capacitor body mounted on the inner side of the buffer mechanism through the connecting component, and a protective mechanism fixedly mounted on the top front side of the capacitor body, the protective mechanism and the capacitor body being electrically connected.

[0008] The protective mechanism includes a groove, which is located at the top front end of the capacitor body. Conductive springs are fixedly connected to both ends of the groove. A conductive block is fixedly connected to the inner side of the conductive spring. A fuse is held in the inner side of the conductive block. The conductive spring is electrically connected to the capacitor body through a wire. The capacitor body is composed of an aluminum shell, an overload protector, a pressure valve, a conductive foil strip, a core package, and an insulating layer. The specific structure of the capacitor body has been disclosed in the background art above and will not be described in detail here.

[0009] As a preferred technical solution, the protective mechanism further includes a guide rail, which is fixedly connected to the top of the capacitor body and located on one side of the tank. A slider is slidably connected inside the guide rail, and a cover plate is fixedly connected to the side of the slider away from the guide rail. The cover plate covers the top of the tank.

[0010] As a preferred technical solution, both ends of the cover plate are threaded with a first screw, and the bottom of the first screw penetrates through the cover plate.

[0011] As a preferred technical solution, the buffer mechanism includes a ring body, which is fixedly installed on the upper and lower ends of the front of the mounting base. Buffer components are fixedly connected at equal intervals on the inner side of the ring body, and the inner side of the buffer components is connected to the connecting components.

[0012] As a preferred technical solution, the buffer assembly includes a fixed plate, which is arranged in a ring at equal intervals and fixedly connected to the inner side of the ring. A first circular plate is hinged to the inner side of the fixed plate through a hinge ball. A buffer spring is fixedly connected to the inner side of the first circular plate. A second circular plate is fixedly connected to the inner side of the buffer spring. The inner side of the second circular plate is hinged to a connecting assembly through a hinge ball.

[0013] As a preferred technical solution, a damper is fixedly connected between the inner sides of the first circular plate and the second circular plate, and the buffer spring is sleeved on the outer side of the damper.

[0014] As a preferred technical solution, the connecting component includes a mounting groove, which is annularly and evenly spaced on the outside of the capacitor body. A sliding plate is slidably connected to the inside of the mounting groove. Hinges are fixedly installed at both the upper and lower ends of the outer side of the sliding plate. The outer side of the sliding plate is hinged to the inner side of the second circular plate through the hinges. A second screw is threaded to the upper end of the sliding plate. The second screw is also a hand-tightening screw. The end of the second screw passes through the sliding plate and is threadedly connected to the inside of the mounting groove.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during use, when installing the capacitor, insert the sliding plate into the mounting slot and rotate the second screw to move it inward. This will allow for quick and secure installation. The steps are simple and convenient. During daily operation, the equally spaced buffer springs and dampers work together. When the capacitor is subjected to vibration and impact, due to the hinge of the first and second circular plates, regardless of the direction of the impact, the corresponding springs will either stretch or compress. Together with the dampers and hinged balls, they will focus the buffering force on the middle of the capacitor to resist the impact and extend its service life.

[0017] Secondly, in terms of protection and maintenance convenience: The protective mechanism safeguards the device and facilitates maintenance. Before use, a fuse is installed between the conductive blocks inside the conductive spring. The fuse and capacitor are electrically connected through the two. If the capacitor short-circuits and overheats, the fuse will melt instantly and cut off the circuit to avoid damage. If the fuse needs to be replaced, loosen the first screw, push the cover plate to move the slider to one side along the guide rail, remove the old fuse after removing the plate, replace it with a new one, and then reset the cover plate and tighten the screw. The device provides comprehensive protection and makes maintenance easy and convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A;

[0021] Figure 4 This is a schematic diagram of the protective mechanism structure of this utility model.

[0022] Reference numerals: 1. Base plate; 2. Connecting assembly; 21. Mounting groove; 22. Slide plate; 23. Hinge seat; 24. Second screw; 3. Buffer mechanism; 31. Ring body; 32. Buffer assembly; 321. Fixing plate; 322. First circular plate; 323. Buffer spring; 324. Second circular plate; 325. Damper; 4. Capacitor body; 5. Protective mechanism; 51. Groove; 52. Conductive spring; 53. Conductive block; 54. Fuse; 55. Guide rail; 56. Slider; 57. Cover plate; 58. First screw; 6. Mounting seat. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 A self-protected capacitor according to this embodiment includes a substrate 1. A mounting base 6 is fixedly mounted on the front side of the substrate 1. A buffer mechanism 3 is fixedly mounted on both the upper and lower ends of the mounting base 6. A connecting component 2 is provided on the inner side of the buffer mechanism 3. A capacitor body 4 is mounted on the inner side of the buffer mechanism 3 through the connecting component 2. A protective mechanism 5 is fixedly mounted on the top front side of the capacitor body 4. The protective mechanism 5 and the capacitor body 4 are electrically connected.

[0025] The protective mechanism 5 includes a groove 51, which is located at the top front end of the capacitor body 4. Conductive springs 52 are fixedly connected to both ends of the groove 51. Conductive blocks 53 are fixedly connected to the inner side of each conductive spring 52. A fuse 54 is clamped inside the inner side of each conductive block 53. The conductive springs 52 are electrically connected to the capacitor body 4 via wires. The buffer mechanisms 3 at the top and bottom of the mounting base 6, combined with the inner connecting components 2, effectively mitigate the impact of vibration during normal operation or when the capacitor body 4 is subjected to external impacts, protecting the delicate internal electronic components, reducing the risk of damage, and ensuring stable operation of the capacitor. The protective mechanism 5, located at the top front of the capacitor body 4, has conductive springs 52 and conductive blocks 53 at both ends of its groove 51, with a fuse 54 clamped in the middle. The conductive springs 52 are electrically connected to the capacitor body 4. In this way, when the capacitor body 4 experiences abnormal conditions such as short circuits or overheating, the current increases instantaneously, and the fuse 54 melts quickly, cutting off the circuit in time, preventing further deterioration of the fault, effectively ensuring the safety of the capacitor and related equipment, and reducing maintenance costs.

[0026] refer to Figures 1-2 and Figure 4The protective mechanism 5 also includes a guide rail 55, which is fixedly connected to the top of the capacitor body 4 and located on one side of the tank 51. A slider 56 is slidably connected inside the guide rail 55. A cover plate 57 is fixedly connected to the side of the slider 56 away from the guide rail 55, covering the top of the tank 51. Both ends of the cover plate 57 are threaded with first screws 58, the bottom of which penetrates the cover plate 57. The slider 56 is connected to the cover plate 57, allowing the cover plate 57 to slide smoothly along the guide rail 55. When it is necessary to operate the fuse 54 inside the protective mechanism 5, simply push the cover plate 57, and the slider 56 will move smoothly within the guide rail 55, easily removing the cover plate 57 and conveniently exposing the tank 51 for easy access to the internal components. The first screw 58, which is threaded to both ends of the cover plate 57, passes through the cover plate 57 at the bottom. In daily use, tightening the first screw 58 can firmly fix the cover plate 57 to the top of the tank 51, effectively preventing foreign objects from entering the tank 51 and avoiding interference or damage to key components such as the internal conductive spring 52, conductive block 53 and fuse 54, thus ensuring the stable operation of the protective mechanism 5.

[0027] refer to Figures 1-3 The buffer mechanism 3 includes a ring 31, which is fixedly installed on the upper and lower ends of the front of the mounting base 6. Buffer components 32 are fixedly connected at equal intervals to the inner side of the ring 31. The inner side of the buffer components 32 is connected to the connecting component 2. The buffer components 32 include fixed plates 321, which are arranged in a ring at equal intervals and fixedly connected to the inner side of the ring 31. A first circular plate 322 is hinged to the inner side of the fixed plate 321 via a hinge ball. A buffer spring 323 is fixedly connected to the inner side of the first circular plate 322. A second circular plate 324 is fixedly connected to the inner side of the buffer spring 323. The inner side of the second circular plate 324 is hinged to the connecting component 2 via a hinge ball. Dampers 325 are fixedly connected between the inner sides of both the first circular plate 322 and the second circular plate 324. The buffer spring 323 is sleeved on the outer side of the damper 325 at equal intervals. The distributed buffer components 32 are closely connected to the connecting components 2 to form a stable protection system. The fixing plates 321 are arranged in a ring at equal intervals on the inner side of the ring body 31, serving as a key connection support. The first circular plate 322 connected to the inner side of the fixing plate 321 via the hinge ball, together with the buffer spring 323 fixed on the inner side and the second circular plate 324 hinged to the connecting components 2, forms a flexible and effective buffer structure. When the capacitor is subjected to external impact, regardless of the source of the impact force, the buffer spring 323 can respond quickly, either by stretching or compressing. The damper 325 sleeved on the outer side of the buffer spring 323 can effectively consume the impact energy and suppress the spring rebound. Together with the flexible hinge of the first circular plate 322, the second circular plate 324 and the hinge ball, it provides all-round buffering and shock absorption, effectively ensuring the stable operation of the internal components of the capacitor and reducing the risk of damage.

[0028] refer to Figures 1-3The connecting component 2 includes a mounting groove 21, which is annularly spaced on the outside of the capacitor body 4. A sliding plate 22 is slidably connected to the inside of the mounting groove 21. Hinges 23 are fixedly installed at both the upper and lower ends of the outer side of the sliding plate 22. The outer side of the sliding plate 22 is hinged to the inner side of the second circular plate 324 through the hinges 23. A second screw 24 is threaded to the upper end of the sliding plate 22. The second screw 24 is also a hand-tight screw. The end of the second screw 24 passes through the internal thread of the sliding plate 22 and the mounting groove 21. The sliding plate 22, in conjunction with the hinges 23 fixed at both the upper and lower ends, is hinged to the inner side of the second circular plate 324, thus establishing a flexible and stable connection. This allows the capacitor body 4 to better cope with external impacts and maintain a relatively stable state under the synergistic effect of the buffer mechanism 3. The second screw 24, which is threaded to the upper end of the slide plate 22, is designed to be hand-tightened, making it easy to operate. The end of the screw passes through the slide plate 22 and is threaded into the mounting groove 21. When installing the capacitor body 4, simply slide the slide plate 22 into the mounting groove 21 and hand-tighten the second screw 24 to screw it inward. This will quickly and firmly fix the capacitor body 4 in place, making installation and debugging convenient.

[0029] Operating principle and advantages: This device is equipped with a connecting component 2 and a buffer mechanism 3, which greatly improves its performance. When installing the capacitor body 4, insert the slide plate 22 into the mounting slot 21, and rotate the second screw 24 on the upper outer side of the slide plate 22 to move it inward until the slide plate 22 is securely installed in the mounting slot 21. The operation is convenient and efficient. In daily operation, the device is protected by the buffer springs 323 and dampers 325 distributed at equal intervals. Once the capacitor body 4 is subjected to vibration and impact, since the first circular plate 322 and the second circular plate 324 are connected by a hinge, no matter where the impact comes from, the corresponding buffer spring 323 can be pulled. The spring on the side of the impact is stretched, while the spring on the other side is compressed. The two work together with the damper 325 and the hinge ball to accurately concentrate the buffer force in the middle of the capacitor body 4, effectively resisting the impact and extending the service life of the device.

[0030] The protective mechanism 5 is designed to provide a solid safety barrier and facilitate maintenance. Before use, the fuse 54 is placed between the conductive blocks 53 inside the conductive spring 52. The conductive blocks 53 and the conductive spring 52 are used to achieve electrical connection with the capacitor body 4. If the capacitor body 4 experiences a short circuit or overheating, the fuse 54 will immediately melt and cut off the circuit instantly, effectively protecting the capacitor body 4 from damage. If the fuse 54 needs to be replaced, simply loosen the first screw 58, push the cover plate 57 so that its rear slider 56 slides along the guide rail 55 to one side, remove the cover plate 57, and then remove the old fuse 54 between the conductive blocks 53. Replace it with a new one, then pull the cover plate 57 back to its original position and tighten the first screw 58. In this way, the device provides reliable protection and demonstrates high convenience in maintenance and replacement, effectively ensuring the overall practicality.

Claims

1. A self-protected capacitor, comprising a substrate, characterized in that: A mounting base is fixedly installed on the front side of the substrate. Buffer mechanisms are fixedly installed at both the upper and lower ends of the mounting base. A connecting component is provided inside the buffer mechanism. A capacitor body is installed inside the buffer mechanism through the connecting component. A protective mechanism is fixedly installed on the top front side of the capacitor body. The protective mechanism and the capacitor body are electrically connected. The protective mechanism includes a groove, which is located at the top front end of the capacitor body. Conductive springs are fixedly connected to both ends of the groove. A conductive block is fixedly connected to the inner side of the conductive spring. A fuse is held inside the conductive block. The conductive spring is electrically connected to the capacitor body through a wire.

2. The self-protected capacitor according to claim 1, characterized in that: The protective mechanism also includes a guide rail, which is fixedly connected to the top of the capacitor body and located on one side of the tank. A slider is slidably connected inside the guide rail, and a cover plate is fixedly connected to the side of the slider away from the guide rail. The cover plate covers the top of the tank.

3. A self-protected capacitor according to claim 2, characterized in that: Both ends of the cover plate are threaded with a first screw, and the bottom of the first screw penetrates through the cover plate.

4. A self-protected capacitor according to claim 1, characterized in that: The buffer mechanism includes a ring body, which is fixedly installed on the upper and lower ends of the front of the mounting base. Buffer components are fixedly connected at equal intervals on the inner side of the ring body, and the inner side of the buffer components is connected to the connecting components.

5. A self-protected capacitor according to claim 4, characterized in that: The buffer assembly includes a fixed plate, which is arranged in a ring at equal intervals and fixedly connected to the inner side of the ring. A first circular plate is hinged to the inner side of the fixed plate via a hinge ball. A buffer spring is fixedly connected to the inner side of the first circular plate. A second circular plate is fixedly connected to the inner side of the buffer spring. The inner side of the second circular plate is hinged to a connecting assembly via a hinge ball.

6. A self-protected capacitor according to claim 5, characterized in that: A damper is fixedly connected between the inner sides of the first circular plate and the second circular plate, and the buffer spring is sleeved on the outer side of the damper.

7. A self-protected capacitor according to claim 6, characterized in that: The connecting assembly includes a mounting groove, which is annularly spaced on the outside of the capacitor body. A sliding plate is slidably connected to the inside of the mounting groove. Hinges are fixedly installed at both the upper and lower ends of the outer side of the sliding plate. The outer side of the sliding plate is hinged to the inner side of the second circular plate through the hinges. A second screw is threaded to the upper end of the sliding plate. The second screw is also a hand-tightening screw. The end of the second screw passes through the sliding plate and is threaded into the inside of the mounting groove.

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