Three-pin rubber plug of aluminum electrolytic capacitor
By designing the stepped shrink ring and explosion-proof ring structure of the three-pin glue plug of the aluminum electrolytic capacitor, the problems of difficulty in positioning the rubber plug of the traditional capacitor are solved and easy to break out under high voltage, achieving the miniaturization of the capacitor and improving the explosion-proof performance.
Patent Information
- Application Number
- CN202421483997.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The small pin hole of the traditional capacitor plug makes it difficult to position and easily deform. The plug is not conducive to the miniaturization of the capacitor, and it is easy to fall off at high voltage and causes circuit damage.
The three-pin glue plug of aluminum electrolytic capacitor is designed, adopting a stepped shrink ring and explosion-proof ring structure, the pin hole guide is inserted to prevent deformation, and the explosion-proof ring is in close contact with the inner cavity wall of the shell under high pressure, enhancing sealing and explosion-proof strength.
Effectively prevent pin deformation, reduce capacitor height, enhance sealing and explosion-proof strength, avoid the rubber plugs caused by high-voltage impact, and improve the explosion-proof effect of the capacitor.
Smart Images
Figure CN223296667U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic accessories, in particular to a three-pin rubber plug for an aluminum electrolytic capacitor. Background Art
[0002] The pin holes of the rubber plugs of traditional capacitors are small, and the pins are difficult to position when inserted into the rubber plugs and are easily deformed. In addition, most rubber plugs are cylindrical. After the outer shell is assembled, the capacitor as a whole will have an extra height of the outer shell thickness, which is not conducive to the miniaturization of the capacitor. Moreover, when the capacitor is in use, when the internal pressure of the capacitor is high, the pressure will impact the rubber plug, causing the plug to fall out and explode, causing circuit damage. Summary of the Invention
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a three-pin rubber plug for an aluminum electrolytic capacitor to prevent pressure shock to the rubber plug, effectively increase the sealing of the rubber plug, and fundamentally increase the explosion-proof strength of the capacitor. After adopting this solution, the structure is reasonable, the explosion-proof strength is large, and the anti-breakdown effect is good.
[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a three-pin rubber plug for aluminum electrolytic capacitors, which includes a body, wherein the bottom of the body shrinks to form a stepped shrinkage ring, the top of the body is provided with a pin hole running through it from top to bottom, there are two pin holes, respectively located on both sides of the body, a third hole position running through it from top to bottom is provided on the body between the two pin holes, the lower part of the pin hole shrinks to form a conical cylinder, an outer explosion-proof ring is provided at the top edge of the body, and a pin explosion-proof ring is provided at the top of the body at the edge of the pin hole.
[0005] The top of the third hole is expanded to form a positioning step, and the bottom of the third hole is contracted to form a pin channel.
[0006] The outer explosion-proof ring is formed by extending upward from the top edge of the main body. The outer explosion-proof ring is annular and gradually shrinks from top to bottom to form a funnel shape. The outer diameter of the top of the outer explosion-proof ring is equal to or smaller than the outer diameter of the main body.
[0007] The pin explosion-proof ring surrounds the pin hole and the third hole position and is formed by extending upward from the top of the main body. The pin explosion-proof ring is annular and gradually expands from top to bottom to form a cone shape.
[0008] The outer peripheral surface of the outer explosion-proof ring is raised in an arc shape, and the inner peripheral surface of the pin explosion-proof ring is raised in an arc shape.
[0009] After adopting the above scheme, the utility model has a pin hole and a third hole position which are larger at the top and smaller at the bottom on the main body of the plug, which can guide the insertion of the pin and prevent the pin from being deformed during the insertion of the plug. After adopting the explosion-proof ring, when the air pressure in the capacitor is relatively high, the pressure is applied to the explosion-proof ring outside, and the explosion-proof ring begins to be pressurized, and the contact tightness with the inner cavity wall of the shell or the pin gradually increases. The greater the internal pressure, the greater the contact tightness of the explosion-proof ring; thereby preventing pressure from impacting the plug, effectively increasing the sealing performance of the plug, and fundamentally increasing the explosion-proof strength of the capacitor. The structure after adopting this scheme is reasonable, the explosion-proof strength is large, and the anti-breakdown effect is good. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0011] Figure 2 It is a cross-sectional view of the present utility model. DETAILED DESCRIPTION
[0012] The present invention will be further described below in conjunction with all the accompanying drawings. The preferred embodiments of the present invention are as follows: Figure 1 and attached Figure 2 The three-pin rubber plug for aluminum electrolytic capacitors described in this embodiment includes a body 1, wherein the bottom of the body 1 shrinks to form a stepped shrink ring 2, and the top of the body 1 is provided with a pin hole 3 that runs through it from top to bottom. There are two pin holes 3, one located on each side of the body 1, and a third hole position 4 that runs through it from top to bottom is provided on the body 1 between the two pin holes 3. The top of the third hole position 4 expands to form a positioning step 5, and the bottom of the third hole position 4 shrinks to form a pin channel 8. The lower part of the pin hole 3 shrinks to form a conical cylindrical shape, and an outer explosion-proof ring 6 is provided at the top edge of the body 1. A pin explosion-proof ring 7 is provided on the top of the body 1 at the edge of the pin hole 3. The pin explosion-proof ring 7 surrounds the pin hole 3 and the third hole position 4, and is formed by extending upward from the top of the body 1. The pin explosion-proof ring 7 is annular and gradually expands from top to bottom to form a conical cylindrical shape.
[0013] The outer explosion-proof ring 6 is formed by extending upward from the top edge of the body 1. The outer explosion-proof ring 6 is annular and gradually shrinks from top to bottom to form a funnel shape. The outer diameter of the top of the outer explosion-proof ring 6 is equal to or less than the outer diameter of the body 1. The outer circumference of the outer explosion-proof ring 6 is convex and curved, and the inner circumference of the pin explosion-proof ring 7 is convex and curved.
[0014] After adopting the above solution, the main body of the rubber plug is provided with a pin hole and a third hole position that are larger at the top and smaller at the bottom, which can guide the insertion of the pin to prevent the pin from deforming during the insertion of the rubber plug. The bottom of the main body shrinks to form a stepped shrink ring, and the shrink ring and the bottom of the shrink surface of the shell are located on the same plane, so that the overall height of the capacitor can be reduced. After adopting the explosion-proof ring, when the air pressure in the capacitor is large, when the pressure is applied to the outer explosion-proof ring, the top of the outer explosion-proof ring begins to be compressed, causing the top of the outer explosion-proof ring to expand outward and align with the inner wall of the shell. The contact tightness gradually increases. The greater the internal pressure, the greater the contact tightness between the outer explosion-proof ring and the inner wall of the shell. When pressure is applied to the pin explosion-proof ring, the top of the pin explosion-proof ring begins to be compressed, causing the top of the pin explosion-proof ring to shrink inward and contact the outer peripheral surface of the pin. The greater the internal pressure, the greater the contact tightness between the pin explosion-proof ring and the pin. This prevents pressure from impacting the plug, effectively increases the sealing of the plug, and fundamentally increases the explosion-proof strength of the capacitor. The structure after adopting this solution is reasonable, the explosion-proof strength is strong, and the anti-breakdown effect is good.
[0015] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A three-pin rubber plug for an aluminum electrolytic capacitor, comprising a body (1), characterized in that: The bottom of the body (1) is contracted to form a stepped contraction ring (2), the top of the body (1) is provided with a pin hole (3) that passes through from top to bottom, there are two pin holes (3), which are respectively located on both sides of the body (1), and a third hole position (4) that passes through from top to bottom is provided on the body (1) between the two pin holes (3), the lower part of the pin hole (3) is contracted to form a cone shape, an outer explosion-proof ring (6) is provided at the top edge of the body (1), and a pin explosion-proof ring (7) is provided on the top of the body (1) at the edge of the pin hole (3); the top of the third hole position (4) is expanded to form a positioning step (5), and the bottom of the third hole position (4) is provided with a positioning step (5). The outer explosion-proof ring (6) is formed by extending upward from the top edge of the main body (1), and is annular and gradually shrinks from top to bottom to form a funnel shape. The outer diameter of the top of the outer explosion-proof ring (6) is equal to or smaller than the outer diameter of the main body (1). The pin explosion-proof ring (7) surrounds the pin hole (3) and the third hole position (4), and is formed by extending upward from the top of the main body (1). The pin explosion-proof ring (7) is annular and gradually expands from top to bottom to form a cone shape. The outer peripheral surface of the outer explosion-proof ring (6) is convex and has an arc surface, and the inner peripheral surface of the pin explosion-proof ring (7) is convex and has an arc surface.