Leakage-proof capacitor
By incorporating conductive blocks and sealing elements into the capacitor, the problem of potting material overflow is solved, thereby improving capacitor production efficiency and yield, and ensuring capacitor stability and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-20
AI Technical Summary
Encapsulation material can easily leak out through the gaps between the conductive sheet and the casing during capacitor production, affecting the capacitor's appearance and connection stability, and leading to a decrease in production yield.
A leakage-proof capacitor is designed by setting a conductive block and a sealing part on the shell. The conductive block extends to the outside of the shell through a through hole, and the sealing part covers the gap between the connecting part and the conductive block. Heat shrink tubing is used as the sealing material to ensure that the potting material does not overflow. At the same time, the conductive sheet and the connecting sheet stably connect the capacitor core to the extreme ends.
It effectively avoids the overflow of potting material, improves the production efficiency and yield of capacitors, enhances the stability and ease of use of capacitors, and strengthens structural stability and sealing.
Smart Images
Figure CN224020618U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to capacitor technical field especially a kind of anti-leakage capacitor. BACKGROUND
[0002] Thin film capacitor is with metal foil as electrode, which is overlapped with polyethylene, polypropylene, polystyrene or polycarbonate plastic film, and is wound into cylindrical structure after being overlapped from both ends. After the winding of capacitor core is completed, the capacitor core needs to be fixed in the shell by potting, and is connected to the outside of the shell through the conductive sheet, so as to achieve the effect of sealing and convenient connection. In the process of potting, the potting material enters from the opening of the shell, and easily overflows between the conductive sheet and the shell. This not only affects the appearance of the capacitor, but also cannot guarantee the stability of the connection between the shell and the capacitor core, reducing the production yield of the capacitor. SUMMARY
[0003] To solve the above problems, the purpose of the utility model is to provide an anti-leakage capacitor, which can prevent the potting material from overflowing outside the shell through the through hole and the connecting hole during production, and improve the production efficiency and yield of the capacitor.
[0004] The technical scheme adopted by the utility model to solve the problem is:
[0005] An anti-leakage capacitor comprises a shell, a capacitor core and a sealing part, the capacitor core and the sealing part are both fixed on the shell, the shell further comprises a conductive block, one end of the conductive block is connected with the pole end of the capacitor core, and the other end of the conductive block extends to the outside of the shell, the shell is provided with a through hole matched with the conductive block, and the outer side of the through hole is provided with a connecting part, the connecting part comprises a fixing ring, a groove and a connecting hole communicated with the through hole, the fixing ring is fixedly connected with the shell through the groove, and the sealing part is sleeved on the fixing ring and the groove to cover the gap between the connecting part and the conductive block.
[0006] The anti-leakage capacitor has at least the following beneficial effects: by arranging the shell and the sealing part, the conductive block extends to the outside of the shell through the through hole, and the gap between the connecting part and the conductive block is covered by the sealing part, so as to prevent the potting material from overflowing outside the shell through the through hole and the connecting hole during production, affect the appearance of the capacitor, and improve the production efficiency and yield of the anti-leakage capacitor; by arranging the capacitor core and the sealing part, the capacitor core can be quickly and stably connected to the equipment outside the sealing part through the conductive block, so as to improve the stability and convenience of the capacitor.
[0007] Further, the sealing part is attached to the fixing ring, and the sealing part is fixedly connected to the connecting part through the groove. This structure ensures that the sealing part can be stably clamped on the groove and the fixing ring, avoids displacement and loosening of the sealing part during use of the anti-leakage capacitor, and improves the structural stability and sealing performance of the anti-leakage capacitor.
[0008] Further, the groove is further provided with a support platform below, and the cross-sectional area of the support platform is greater than that of the groove. By providing the support platform, the contact area of the groove and the shell is increased, the connection stability of the groove and the shell is improved, and the lower end of the sealing part can be stably attached to the groove, thereby ensuring the structural stability and sealing performance of the anti-leakage capacitor.
[0009] Further, the fixing ring, the groove, the support platform and the shell are integrally formed. This structure ensures the integrity of the shell and the connecting part, and improves the structural stability of the anti-leakage capacitor.
[0010] Further, the cross section of the fixing ring and the groove is a rounded rectangle. This structure ensures that the sealing part can be stably and uniformly attached to the edge position of the fixing ring and the groove, avoids gaps between the sealing part and the fixing ring and the groove, and affects the sealing performance of the anti-leakage capacitor.
[0011] Further, the height of the sealing part is greater than the sum of the height of the fixing ring and the height of the groove. This structure ensures that the upper end of the sealing part can cover the gap between the conductive block and the connecting hole, and avoids the overflow of the potting material from the connecting hole to affect the appearance of the capacitor.
[0012] Further, an opening is provided on the side of the shell away from the through hole, and the capacitor core passes through the opening and is fixed in the shell. By providing the opening, the installation of the capacitor core is facilitated, and the potting material can quickly enter the shell through the opening, thereby improving the production efficiency of the anti-leakage capacitor.
[0013] Further, the conductive block comprises a first conductive sheet, a second conductive sheet and a connecting sheet, the first conductive sheet and the second conductive sheet are connected to the pole of the capacitor core through the connecting sheet; the first conductive sheet extends to the outside of the sealing part through the through hole and the connecting hole, and the second conductive sheet extends to the outside of the shell through the opening. By providing the first conductive sheet, the second conductive sheet and the connecting sheet, the pole of the capacitor core can be stably connected to the upper and lower ends of the shell through the connecting sheet, thereby improving the working stability and expansibility of the anti-leakage capacitor.
[0014] Further, the length of the connecting piece is greater than the length of the first conductive piece; the length of the connecting piece is greater than the length of the second conductive piece. This structure ensures that the connecting piece can stably connect the poles of the capacitor core, and also facilitates the flexible extension of the first conductive piece and the second conductive piece to the outside of the shell, thereby improving the connection flexibility and stability of the leakage-proof capacitor.
[0015] Further, the sealing part is made of a heat shrink tube. The outer layer material of the heat shrink tube has the advantages of insulation, corrosion resistance and wear resistance, and the inner layer material of the heat shrink tube has the advantages of low melting point, waterproof sealing and high adhesion. The sealing part made of the heat shrink tube can effectively ensure the sealing between the connecting part and the conductive block.
[0016] The beneficial effects of the above-mentioned leakage-proof capacitor are: by arranging the shell and the sealing part, the conductive block extends to the outside of the shell through the through hole, and the gap between the connecting part and the conductive block is covered by the sealing part, thereby avoiding the overflow of the potting material through the through hole and the connecting hole to the outside of the shell during production, affecting the appearance of the capacitor, and improving the production efficiency and yield of the leakage-proof capacitor; by arranging the capacitor core and the sealing part, the capacitor core can be quickly and stably connected to the equipment outside the sealing part through the conductive block, thereby improving the stability and use convenience of the capacitor; by arranging the support platform, the contact area of the groove with the shell is increased, the connection stability of the groove with the shell is improved, and the lower end of the sealing part can be stably attached to the groove, thereby ensuring the structural stability and sealing performance of the leakage-proof capacitor; by arranging the first conductive piece, the second conductive piece and the connecting piece, the poles of the capacitor core can be stably connected to the upper and lower ends of the shell through the connecting piece, thereby improving the working stability and expandability of the leakage-proof capacitor.
[0017] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 FIG. 1 is a structural schematic view of a leakage-proof capacitor according to an embodiment of the present application;
[0019] Figure 2 FIG. 2 is an exploded view of a leakage-proof capacitor according to an embodiment of the present application;
[0020] Figure 3 FIG. 3 is a sectional view of a leakage-proof capacitor according to an embodiment of the present application; Figure 2 FIG. 4 is an enlarged view of the structure of the shell;
[0021] Figure 4 FIG. 5 is an assembly process diagram of a leakage-proof capacitor according to an embodiment of the present application;
[0022] Figure 5 FIG. 6 is a sectional view of a leakage-proof capacitor according to an embodiment of the present application. DETAILED DESCRIPTION
[0023] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.
[0024] With reference to Figures 1 to 5 The present application provides a kind of anti-leakage capacitor, comprising: shell 100, capacitor core 200 and sealing portion 300, capacitor core 200 and sealing portion 300 are all fixed on shell 100;Shell 100 is also provided with conductive block 210, one end of conductive block 210 is connected with the pole end of capacitor core 200, the other end of conductive block 210 extends to the outside of shell 100;Shell 100 is provided with the through hole 110 matched with conductive block 210, the outside of through hole 110 is provided with connecting portion 120;Connecting portion 120 includes fixed ring 121, recess 122, connecting hole 123 connected with through hole 110, fixed ring 121 is fixedly connected with shell 100 by recess 122;Sealing portion 300 is sleeved on fixed ring 121 and recess 122 to cover the gap between connecting portion 120 and conductive block 210.
[0025] By setting shell 100 and sealing portion 300, conductive block 210 extends to the outside of shell 100 through through hole 110, and the gap between connecting portion 120 and conductive block 210 is covered by sealing portion 300, to avoid the overflow of potting material to the outside of shell 100 through through hole 110 and connecting hole 123 in the production process, affect the appearance of capacitor, improve the production efficiency and yield of anti-leakage capacitor;By setting capacitor core 200 and sealing portion 300, capacitor core 200 can be quickly and stably connected to the equipment outside sealing portion 300 through conductive block 210, to improve the stability and use convenience of capacitor.
[0026] Another embodiment, sealing portion 300 is attached to fixed ring 121, and is fixedly connected with connecting portion 120 by recess 122.This structure ensures that sealing portion 300 can be stably clamped on recess 122 and fixed ring 121, to avoid displacement and loosening of sealing portion 300 during use of anti-leakage capacitor, improve the structural stability and sealing property of anti-leakage capacitor.
[0027] Another embodiment, the lower side of the groove 122 is further provided with a support platform 124, the cross-sectional area of the support platform 124 is greater than the cross-sectional area of the groove 122. By setting the support platform 124, the contact area of the groove 122 and the shell 100 is increased, the connection stability of the groove 122 and the shell 100 is improved, and the lower end of the sealing part 300 can be stably attached to the groove 122, ensuring the structural stability and sealing of the leak-proof capacitor.
[0028] Another embodiment, the fixed ring 121, the groove 122, the support platform 124 and the shell 100 are integrally formed. This structure ensures the integrity of the shell 100 and the connecting part 120, and improves the structural stability of the leak-proof capacitor.
[0029] Another embodiment, the cross section of the fixed ring 121 and the groove 122 is a rounded rectangle. This structure ensures that the sealing part 300 can be stably and uniformly attached to the edge position of the fixed ring 121 and the groove 122, avoiding the existence of gaps between the sealing part 300 and the fixed ring 121 and the groove 122, affecting the sealing of the leak-proof capacitor.
[0030] Another embodiment, the height of the sealing part 300 is greater than the sum of the height of the fixed ring 121 and the groove 122. This structure ensures that the upper end of the sealing part 300 can cover the gap between the conductive block 210 and the connecting hole 123, avoiding the overflow of the potting material from the connecting hole 123 affecting the appearance of the capacitor.
[0031] Another embodiment, the shell 100 is provided with an opening 130 on the side away from the through hole 110, and the capacitor core 200 is fixed in the shell 100 through the opening 130. By setting the opening 130, the installation of the capacitor core 200 is facilitated, and the potting material can quickly enter the shell 100 through the opening 130, improving the production efficiency of the leak-proof capacitor.
[0032] Another embodiment, the conductive block 210 includes a first conductive sheet 211, a second conductive sheet 212 and a connecting sheet 213, the first conductive sheet 211 and the second conductive sheet 212 are connected to the pole of the capacitor core 200 through the connecting sheet 213; the first conductive sheet 211 extends to the outside of the sealing part 300 through the through hole 110 and the connecting hole 123, and the second conductive sheet 212 extends to the outside of the shell 100 through the opening 130. By setting the first conductive sheet 211, the second conductive sheet 212 and the connecting sheet 213, the pole of the capacitor core 200 can be stably connected to the upper and lower ends of the shell 100 through the connecting sheet 213, improving the working stability and expansibility of the leak-proof capacitor.
[0033] In another embodiment, the length of the connecting piece 213 is greater than the length of the first conductive piece 211; the length of the connecting piece 213 is greater than the length of the second conductive piece 212. This structure ensures that the connecting piece 213 can stably connect the poles of the capacitor core 200, and also facilitates the flexible extension of the first conductive piece 211 and the second conductive piece 212 outside the shell 100, thereby improving the connection flexibility and stability of the leakage-proof capacitor.
[0034] In another embodiment, the sealing part 300 is made of a heat-shrinkable tube. The outer layer of the heat-shrinkable tube has the advantages of insulation, corrosion resistance, and wear resistance, and the inner layer of the heat-shrinkable tube has the advantages of low melting point, waterproof sealing, and high adhesion. The sealing part 300 made of a heat-shrinkable tube can effectively ensure the sealing between the connecting part 120 and the conductive block 210.
[0035] In the production process of the leakage-proof capacitor in this embodiment, first, according to the specifications of the capacitor core 200, a corresponding size of the shell 100 is selected, and the upper end of the shell 100 is provided with a through hole 110. Specifically, the outer side of the through hole 110 is provided with a connecting part 120. The connecting part 120 includes a fixing ring 121, a groove 122, a support platform 124, and a connecting hole 123 that is in communication with the through hole 110. Then, the conductive block 210 is installed on the capacitor core 200, and the connecting piece 213 is attached to the poles of the capacitor core 200, the first conductive piece 211 extends upward, and the second conductive piece 212 extends downward. Then, the capacitor core 200 and the conductive block 210 are stably fixed in the shell 100 through the opening 130 at the top of the shell 100, so that the first conductive piece 211 extends outside the shell 100 through the through hole 110 and the connecting hole 123, and the second conductive piece 212 extends outside the shell 100 through the opening 130. Then, the sealing part 300 is sleeved on the fixing ring 121 and the groove 122, and the sealing part 300 is shrunk and covers the gap between the connecting part 120 and the conductive block 210 by heating, thereby achieving the effect of sealing the first conductive piece 211 and the connecting hole 123. At this time, since the lower end of the sealing part 300 is attached to the fixing ring 121 and the groove 122, the sealing part 300 can be stably clamped in the groove 122, effectively preventing the displacement of the sealing part 300 during processing and use, and further ensuring the connection stability of the sealing part 300 and the shell 100. Finally, a sealant is filled between the capacitor core 200 and the shell 100 to form a waterproof seal. Figure 4The shown potting part 140, in the potting process, when the flowing potting material enters between the capacitor core 200 and the shell 100 through the opening 130, and fixes the capacitor core 200 and the conductive block 210; when the potting material enters the gap between the first conductive sheet 211 and the through hole 110, and enters the connecting part 120; since the sealing part 300 is sleeved on the fixing ring 121 and the groove 122 to seal the gap between the connecting part 120 and the first conductive sheet 211, the potting material in the connecting hole 123 can be effectively prevented from flowing out, the pollution to the outside of the shell 100 is avoided, and the positioning accuracy of the conductive block 210 and the capacitor core 200 is ensured, and the production yield of the capacitor is improved. In this way, the production of the anti-leakage capacitor is completed, the whole process is controllable and efficient, and the production efficiency of the anti-leakage capacitor is ensured.
[0036] From the above description, it can be seen that the anti-leakage capacitor of the utility model sets the shell 100 and the sealing part 300, the conductive block 210 extends to the outside of the shell 100 through the through hole 110, and covers the gap between the connecting part 120 and the conductive block 210 through the sealing part 300, so that the potting material is prevented from overflowing to the outside of the shell 100 through the through hole 110 and the connecting hole 123 in the production process, the appearance of the capacitor is affected, and the production efficiency and yield of the anti-leakage capacitor are improved; by setting the capacitor core 200 and the sealing part 300, the capacitor core 200 can be quickly and stably connected to the equipment outside the sealing part 300 through the conductive block 210, the stability and use convenience of the capacitor are improved; by setting the support platform 124, the contact area of the groove 122 and the shell 100 is increased, the connection stability of the groove 122 and the shell 100 is improved, and the lower end of the sealing part 300 can be stably attached to the groove 122, so that the structural stability and sealing performance of the anti-leakage capacitor are ensured; by setting the first conductive sheet 211, the second conductive sheet 212 and the connecting sheet 213, the poles of the capacitor core 200 can be stably connected to the upper and lower ends of the shell 100 through the connecting sheet 213, and the working stability and expansibility of the anti-leakage capacitor are improved.
[0037] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled persons in the technical field without departing from the purpose of the utility model.
Claims
1. A leakage-proof capacitor, characterized in that, include: The device comprises a housing, a capacitor core, and a sealing portion, wherein the capacitor core and the sealing portion are both fixed to the housing; a conductive block is also provided inside the housing, one end of which is connected to the extreme end of the capacitor core, and the other end of which extends outside the housing; the housing has a through hole that mates with the conductive block, and a connecting portion is provided outside the through hole; the connecting portion includes a fixing ring, a groove, and a connecting hole communicating with the through hole, and the fixing ring is fixedly connected to the housing through the groove; the sealing portion is fitted onto the fixing ring and the groove to cover the gap between the connecting portion and the conductive block.
2. The anti-leakage capacitor according to claim 1, characterized in that, The sealing part fits into the fixing ring, and is fixedly connected to the connecting part through the groove.
3. The anti-leakage capacitor according to claim 2, characterized in that, A support platform is also provided below the groove, and the cross-sectional area of the support platform is larger than the cross-sectional area of the groove.
4. A leakage-proof capacitor according to claim 3, characterized in that, The fixing ring, the groove, the support platform, and the outer shell are integrally formed.
5. A leakage-proof capacitor according to claim 2, characterized in that, The cross-sections of the fixing ring and the groove are rounded rectangles.
6. A leakage-proof capacitor according to claim 5, characterized in that, The height of the sealing part is greater than the sum of the heights of the retaining ring and the groove.
7. A leakage-proof capacitor according to claim 1, characterized in that, An opening is provided on the side of the housing away from the through hole, and the capacitor core passes through the opening and is fixed inside the housing.
8. A leakage-proof capacitor according to claim 7, characterized in that, The conductive block includes a first conductive sheet, a second conductive sheet, and a connecting sheet. The first conductive sheet and the second conductive sheet are connected to the extreme ends of the capacitor core through the connecting sheet. The first conductive sheet extends through the through hole and the connecting hole to the outside of the sealing part, and the second conductive sheet extends through the opening to the outside of the outer casing.
9. A leakage-proof capacitor according to claim 8, characterized in that, The length of the connecting piece is greater than the length of the first conductive piece; the length of the connecting piece is greater than the length of the second conductive piece.
10. A leakage-proof capacitor according to claim 1, characterized in that, The sealing part is made of heat shrink tubing.