Leakproof capacitor

Abstract

This utility model discloses a leakage-proof capacitor, belonging to the field of capacitor technology. It includes a capacitor body with two contacts fixedly connected to its lower end, and a protective mechanism installed on the surface of the capacitor body, extending to the lower end of the capacitor body. The protective mechanism is sleeved over the contacts. The protective mechanism includes a thermally conductive metal sleeve sleeved over the surface of the capacitor body, with a protective component connected inside the thermally conductive metal sleeve. Multiple longitudinally flowing airflow channels can be formed by the provided support guides, which can assist in heat dissipation from the surface of the capacitor body when heat is generated, thus cooling the surface of the capacitor body, preventing direct contact with external objects, reducing the risk of surface cracking, and minimizing leakage of the internal dielectric from the capacitor body to the outside.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, specifically to a leakage-proof capacitor. Background Technology

[0002] Aluminum electrolytic capacitors, also known as capacitors, are energy storage components. Their structures can be divided into three types: fixed capacitors, semi-variable capacitors, and variable capacitors. They are characterized by large capacitance, but also by large leakage current, large error, and poor stability. They are commonly used for AC bypass and filtering, and are also used for signal coupling when the requirements are not high. Collisions or squeezing during transportation or installation can cause the casing to deform or break.

[0003] A search of existing technology revealed a "high-sealing aluminum electrolytic capacitor with leak-proof designation" (publication number CN211828501U). This device uses a sealing cap for sealing, and two sealing rings distributed vertically between the sealing cap and the inner wall of the outer casing are provided to further improve the sealing effect. However, external contact may cause the surface of the capacitor to rupture due to contact, which may lead to leakage of the internal dielectric of the capacitor to the outside.

[0004] Based on this, the present invention designs a leakage-proof capacitor to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a leakage-proof capacitor.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A leakage-proof capacitor includes a capacitor body with two contacts fixedly connected to its lower end, a protective mechanism mounted on the surface of the capacitor body extending to the lower end of the capacitor body, and the protective mechanism sleeved over the contacts; wherein the protective mechanism includes a thermally conductive metal sleeve sleeved on the surface of the capacitor body, a protective component connected inside the thermally conductive metal sleeve, the protective component mounted on the surface of the capacitor body, and a reinforcing component provided at the lower end of the protective component, the reinforcing component mounted at the lower end of the capacitor body, and the reinforcing component sleeved over the contacts.

[0008] Furthermore, the protective assembly includes multiple external support rings fitted onto the surface of the capacitor body. The multiple external support rings are evenly distributed longitudinally along the surface of the capacitor body. A connecting plate is fixedly connected to the inner wall of each external support ring. The end of the connecting plate away from the external support ring is fixedly connected to the surface of the capacitor body. A protective frame is provided between adjacent external support rings.

[0009] Furthermore, the reinforcement component includes a silicone pad installed at the lower end of the capacitor body. The lower end of the capacitor body has a groove, and the silicone pad is embedded in the groove. Two reinforcement sleeves are provided inside the silicone pad, and the lower ends of the reinforcement sleeves extend to the bottom of the capacitor body.

[0010] Furthermore, the protective frame includes multiple baffles disposed on the surface of the capacitor body, and two support guides are fixedly connected to the side of the baffles near the capacitor body, the support guides being fixedly connected to the surface of the capacitor body.

[0011] Furthermore, the plurality of the baffle plates are evenly distributed in a ring shape along the surface of the capacitor body, with the upper baffle plate and the lower baffle plate being staggered.

[0012] Furthermore, the ends of the baffle plates are all located inside the adjacent outer support rings, and the baffle plates are made of copper metal components.

[0013] Furthermore, the upper end of the reinforcing sleeve is fixedly connected to the inner top wall of the groove, and the reinforcing sleeve is fitted onto the surface of the adjacent contact foot.

[0014] Furthermore, the longitudinal section of the silicone pad is an isosceles trapezoid, and the silicone pad matches the groove.

[0015] Beneficial effects

[0016] The aforementioned leak-proof capacitor forms a ring-shaped protective effect through multiple baffles, and the supporting guides can provide good support for the baffles. Furthermore, the supporting guides can form multiple longitudinal airflow channels, which can assist in heat dissipation on the surface of the capacitor body when heat is generated, thereby cooling the surface of the capacitor body, preventing direct contact with external objects, reducing the risk of surface cracking, and minimizing the leakage of the internal dielectric from the capacitor body to the outside.

[0017] The device uses a silicone pad to alleviate the lower end of the capacitor body from contact, a reinforcing sleeve to improve the stability of the connection between the contacts and the capacitor body, and an isosceles trapezoidal groove to provide stable support for the contacts, reducing the occurrence of breakage at the connection and minimizing leakage of the dielectric inside the capacitor body. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a leakage-proof capacitor structure;

[0020] Figure 2 A partial structural diagram of a leakage-proof capacitor protection mechanism;

[0021] Figure 3 This is a schematic diagram of an explosion protection structure for a leakage-proof capacitor.

[0022] Figure 4 This is an exploded cross-sectional view of a leak-proof capacitor reinforcement component.

[0023] The labels in the diagram represent:

[0024] 1. Capacitor body; 2. Contacts; 3. Protective mechanism; 31. Protective component; 311. Connecting plate; 312. External support ring; 313. Protective frame; 3131. Support guide bar; 3132. Baffle plate; 32. Reinforcing component; 321. Silicone pad; 322. Reinforcing sleeve; 323. Insert groove; 33. Thermally conductive metal sleeve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4A leakage-proof capacitor includes a capacitor body 1, with two contacts 2 fixedly connected to the lower end of the capacitor body 1, and a protective mechanism 3. The protective mechanism 3 is installed on the surface of the capacitor body 1, and the surface of the protective mechanism 3 extends to the lower end of the capacitor body 1. The protective mechanism 3 is sleeved on the outside of the contacts 2. The protective mechanism 3 includes a thermally conductive metal sleeve 33 sleeved on the surface of the capacitor body 1, and a protective component 31 is connected inside the thermally conductive metal sleeve 33. The protective component 31 is installed on the surface of the capacitor body 1, and a reinforcing component 32 is provided at the lower end of the protective component 31. The reinforcing component 32 is installed at the lower end of the capacitor body 1 and is sleeved on the outside of the contacts 2.

[0028] In this embodiment of the present invention, the core structure inside the capacitor body 1 is composed of basic plates and conductive films, arranged in parallel or wound into shape, for storing charge. In aluminum electrolytic capacitors, the plates are connected to the lead terminals by riveting process, and the surface is etched to increase the contact area. The insulating layer is the insulating material between the plates, including ceramic, polypropylene film, alumina layer or electrolyte-impregnated paper layer, etc. Different dielectrics determine the characteristics of the capacitor.

[0029] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 As shown, in a preferred embodiment of the present invention, the protective component 31 includes a plurality of external support rings 312 sleeved on the surface of the capacitor body 1. The plurality of external support rings 312 are evenly distributed longitudinally along the surface of the capacitor body 1. A connecting plate 311 is fixedly connected to the inner wall of the external support rings 312. The end of the connecting plate 311 away from the external support rings 312 is fixedly connected to the surface of the capacitor body 1. A protective frame 313 is provided between adjacent external support rings 312. The protective frame 313 includes a plurality of baffle plates 3132 provided on the surface of the capacitor body 1. Two support guides 3131 are fixedly connected to the side of the baffle plate 3132 near the capacitor body 1. The support guides 3131 are fixedly connected to the surface of the capacitor body 1. The plurality of baffle plates 3132 are evenly distributed in a ring shape along the surface of the capacitor body 1. The upper baffle plate 3132 and the lower baffle plate 3132 are staggered. The ends of the baffle plates 3132 are all located inside the adjacent external support rings 312. The baffle plates 3132 are made of copper metal components.

[0030] In this embodiment of the utility model, the device forms a protective shield on the surface of the capacitor body 1 by setting a protective frame 313. Under the action of multiple baffles 3132, a ring-shaped protective effect is formed. Under the action of the support guide strips 3131, the baffles 3132 can form a good support effect. Furthermore, the support guide strips 3131 can form multiple longitudinal airflow channels, which can assist in heat dissipation on the surface of the capacitor body 1 when heat is generated, thereby cooling the surface of the capacitor body 1.

[0031] In some embodiments, such as Figure 1 , Figure 2 , Figure 4 As shown, in a preferred embodiment of the present invention, the reinforcing component 32 includes a silicone pad 321 installed at the lower end of the capacitor body 1. A groove 323 is provided at the lower end of the capacitor body 1. The silicone pad 321 is embedded in the groove 323. Two reinforcing sleeves 322 are provided inside the silicone pad 321. The lower end of the reinforcing sleeve 322 extends to the lower part of the capacitor body 1. The upper end of the reinforcing sleeve 322 is fixedly connected to the inner top wall of the groove 323. The reinforcing sleeve 322 is sleeved on the surface of the adjacent contact 2. The longitudinal section of the silicone pad 321 is an isosceles trapezoid. The silicone pad 321 matches the groove 323.

[0032] In this embodiment of the utility model, the device can alleviate the lower end of the capacitor body 1 by setting the silicone pad 321, improve the connection stability between the contact 2 and the capacitor body 1 by reinforcing sleeve 322, and make the silicone pad 321 stably support the contact 2 by setting the isosceles trapezoidal groove 323, thereby reducing the occurrence of breakage at the connection and reducing the leakage of the internal dielectric of the capacitor body 1.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leakage-proof capacitor, comprising a capacitor body (1), wherein two contacts (2) are fixedly connected to the lower end of the capacitor body (1), characterized in that: A protective mechanism (3) is installed on the surface of the capacitor body (1), the surface of the protective mechanism (3) extends to the lower end of the capacitor body (1), and the protective mechanism (3) is sleeved on the outside of the contact (2); The protective mechanism (3) includes a heat-conducting metal sleeve (33) fitted onto the surface of the capacitor body (1). A protective component (31) is connected inside the heat-conducting metal sleeve (33). The protective component (31) is installed on the surface of the capacitor body (1). A reinforcing component (32) is provided at the lower end of the protective component (31). The reinforcing component (32) is installed at the lower end of the capacitor body (1) and is fitted onto the outside of the contact (2).

2. The leakage-proof capacitor according to claim 1, characterized in that, The protective component (31) includes a plurality of external support rings (312) sleeved on the surface of the capacitor body (1). The plurality of external support rings (312) are evenly distributed longitudinally along the surface of the capacitor body (1). A connecting plate (311) is fixedly connected to the inner wall of the external support ring (312). The end of the connecting plate (311) away from the external support ring (312) is fixedly connected to the surface of the capacitor body (1). A protective frame (313) is provided between adjacent external support rings (312).

3. The leakage-proof capacitor according to claim 1, characterized in that, The reinforcement component (32) includes a silicone pad (321) installed at the lower end of the capacitor body (1). The lower end of the capacitor body (1) has a groove (323). The silicone pad (321) is embedded in the groove (323). The silicone pad (321) has two reinforcement sleeves (322) inside. The lower end of the reinforcement sleeves (322) extends to the bottom of the capacitor body (1).

4. The leakage-proof capacitor according to claim 2, characterized in that, The protective frame (313) includes a plurality of baffles (3132) disposed on the surface of the capacitor body (1). Two support guides (3131) are fixedly connected to the side of the baffle (3132) near the capacitor body (1). The support guides (3131) are fixedly connected to the surface of the capacitor body (1).

5. The leakage-proof capacitor according to claim 4, characterized in that, Multiple baffles (3132) are evenly distributed in a ring along the surface of the capacitor body (1), with the upper baffle (3132) and the lower baffle (3132) being staggered.

6. The leakage-proof capacitor according to claim 5, characterized in that, The ends of the baffle plate (3132) are all located inside the adjacent outer support ring (312), and the baffle plate (3132) is made of copper metal components.

7. The leakage-proof capacitor according to claim 3, characterized in that, The upper end of the reinforcing sleeve (322) is fixedly connected to the inner top wall of the groove (323), and the reinforcing sleeve (322) is sleeved on the surface of the adjacent contact foot (2).

8. The leakage-proof capacitor according to claim 3, characterized in that, The longitudinal section of the silicone pad (321) is an isosceles trapezoid, and the silicone pad (321) matches the groove (323).

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