Capacitor with waterproof performance
By setting a seal between the cover plates of the capacitor and sealing it with the capacitor housing, the problem of poor waterproofing performance of existing capacitors in humid environments is solved, and higher waterproofing performance and capacitor stability and safety are achieved sex.
Patent Information
- Application Number
- CN202420553155.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-03-21
AI Technical Summary
Existing capacitors have poor waterproof performance in humid environments, and water vapor is prone to enter the shell, resulting in reduced insulation resistance, leakage of capacitors, or even bulging or explosion.
A capacitor with waterproof performance is designed. By setting a seal between the upper and lower cover plates, and when the capacitor is assembled, the arc-shaped face of the seal is expanded outwardly and sealed with the capacitor housing to reduce water vapor entry.
It effectively improves the waterproof performance of the capacitor and reduces water vapor entering the capacitor housing, thereby avoiding problems such as reducing insulation resistance and capacitance leakage, ensuring the stability and safety of the capacitor.
Smart Images
Figure CN222514827U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of capacitor production and manufacturing, and specifically refers to a capacitor with waterproof performance. Background Art
[0002] The capacitor shell is generally made of aluminum. During the capacitor manufacturing process, the opening of the capacitor shell is turned inward to press the cover plate. Figure 3 As shown, the waterproof performance of capacitors with this structure is poor. In a humid environment, water vapor can easily enter the capacitor housing through the compression joint of the cover. After the core package in the capacitor housing absorbs water vapor, the insulation resistance of the capacitor will decrease, and the capacitor will leak. In severe cases, bulging or even bursting will occur. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a capacitor with waterproof performance in view of the deficiencies of the above-mentioned prior art.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] A capacitor with waterproof performance comprises a capacitor housing, a core package is arranged in the capacitor housing, a cover plate is arranged above the core package, the cover plate comprises an upper cover plate piece and a lower cover plate piece, a seal is arranged between the upper cover plate piece and the lower cover plate piece, the middle of the seal adopts a hollow structure, and the periphery of the seal is provided with an arc-shaped surface protruding outward, a flange is arranged above the capacitor housing, a waist groove is arranged around the upper periphery of the capacitor housing, the periphery of the lower cover plate piece is supported on the waist groove, and after the flange presses the upper cover plate piece, the arc surface of the seal expands outward and seals with the periphery of the capacitor housing.
[0006] Furthermore, the seal is provided with connecting bosses on the upper and lower sides, which are respectively clamped on the upper cover plate and the lower cover plate. A connecting hole is processed in the middle of the connecting boss, and the pin on the core package passes through the connecting hole. The aperture of the connecting hole is smaller than the outer diameter of the pin on the core package.
[0007] Furthermore, a release groove is processed around the connection hole.
[0008] Furthermore, the cross-section of the waist groove is a square groove.
[0009] Compared with the prior art, the utility model provides a waterproof capacitor, in which a seal is arranged between the upper and lower cover plates. When the capacitor is assembled, the seal is compressed and expanded so that its periphery is sealed with the capacitor housing, thereby reducing water vapor from entering the capacitor housing. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model;
[0011] Figure 2 It is a structural schematic diagram of the connection hole of the utility model;
[0012] Figure 3 It is a structural diagram of the original capacitor;
[0013] Among them, 1. capacitor housing, 2. core package, 3. upper cover plate, 4. lower cover plate, 5. sealing member, 6. connecting boss, 7. arc surface, 8. flange, 9. waist groove, 10. connecting hole, 11. release groove. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the present utility model will be described clearly and completely below.
[0015] like Figure 1 and Figure 2 As shown, a capacitor with waterproof performance includes a capacitor housing 1, a core package 2 is arranged in the capacitor housing 1, and a cover plate is arranged above the core package 2, wherein the cover plate includes an upper cover plate piece 3 and a lower cover plate piece 4, a seal 5 is arranged between the upper cover plate piece 3 and the lower cover plate piece 4, the seal 5 is made of rubber material, and connecting bosses 6 are arranged on the upper and lower sides of the seal 5, and the connecting bosses 6 are respectively clamped in the mounting holes of the upper cover plate piece 3 and the lower cover plate piece 4, the middle of the seal 5 adopts a hollow structure, and an arc-shaped surface 7 protruding outward is arranged around the seal 5, a flange 8 is arranged above the capacitor housing 1, and a waist groove 9 is arranged around the upper periphery of the capacitor housing 1, and the cross-section of the waist groove 9 is a square groove, and the waist groove 9 plays a role of clamping the core package on the one hand, and plays a role of supporting the cover plate on the other hand.
[0016] During the capacitor assembly process, the lower cover plate 4 is supported on the waist groove 9, and the flange 8 presses the upper cover plate 3 to make the arc surface 7 of the seal expand outward to seal with the capacitor housing 1, thereby reducing the entry of water vapor into the capacitor housing 1.
[0017] A connecting hole 10 is processed in the middle of the connecting boss 6, and the pin on the core package 2 passes through the connecting hole. The hole diameter of the connecting hole is smaller than the outer diameter of the pin on the core package, so that the connecting hole can tightly wrap the pin.
[0018] The connection hole 10 is processed with a release groove 11 around it. In this embodiment, four release grooves 11 are processed around the connection hole 10, so that when the pin passes through the connection hole 10, the connection hole can expand slightly to reduce the resistance when the pin passes through.
[0019] The present invention is not limited to the described embodiments. Those skilled in the art may make some modifications or changes without departing from the spirit and scope of the present invention, that is, within the scope of disclosure. Therefore, the scope of protection of the present invention shall be subject to the scope defined in the claims.
Claims
1. A capacitor with waterproof performance, comprising a capacitor housing, a core package is arranged in the capacitor housing, and a cover plate is arranged above the core package, characterized in that: The cover plate includes an upper cover plate and a lower cover plate, a seal is arranged between the upper cover plate and the lower cover plate, the seal adopts a hollow structure in the middle, and an arc-shaped surface protruding outward is arranged around the seal, a flange is arranged above the capacitor housing, a waist groove is arranged around the upper part of the capacitor housing, and the periphery of the lower cover plate is supported on the waist groove, and after the flange presses the upper cover plate, the arc surface of the seal expands outward and seals with the periphery of the capacitor housing.
2. The capacitor with waterproof performance according to claim 1, characterized in that: The sealing member is provided with connecting bosses on the upper and lower sides, which are respectively clamped on the upper cover plate and the lower cover plate. A connecting hole is processed in the middle of the connecting boss, and the pin on the core package passes through the connecting hole. The hole diameter of the connecting hole is smaller than the outer diameter of the pin on the core package.
3. The capacitor with waterproof performance according to claim 2, characterized in that: A release groove is processed around the connection hole.
4. The capacitor with waterproof performance according to claim 1, characterized in that: The cross section of the beam waist groove is a square groove.