High-capacity long-life aluminum electrolytic capacitor

Abstract

The utility model discloses a large-capacity long-life aluminum electrolytic capacitor, which comprises an aluminum shell and a rubber plug, the rubber plug is mounted at the top of the aluminum shell, a core bag is mounted in the aluminum shell, a buckling part is arranged on the upper side of the aluminum shell, the core bag is connected with a guide pin, the guide pin extends to the upper side of the rubber plug, a fixed seat is mounted at the upper end of the rubber plug, and the fixed seat is connected with the aluminum shell. A connecting frame is installed on the fixed seat, an insulating sleeve is arranged on the connecting frame, the guide pin penetrates through the insulating sleeve, an expansion section is arranged on the upper side of the insulating sleeve, the expansion section is in a big-end-up cone shape, and a groove is formed in the upper end of the rubber plug. And the expansion section is arranged at the upper end of the insulating sleeve, so that after the guide pin is accidentally collided or extruded, when the guide pin is bent due to large pressure, the expansion section can play a transition role, and the bending degree of the guide pin is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum electrolytic capacitor technical field, concretely is a kind of large capacity long life aluminum electrolytic capacitor. BACKGROUND

[0002] Aluminum electrolytic capacitor, also known as capacitor, is a kind of energy storage element, its structure can be divided into fixed capacitor, semi-variable capacitor, variable capacitor three, its characteristics are large capacity, but large leakage, large error, poor stability, commonly used as ac bypass and filtering, when the requirement is not high, also used for signal coupling.Aluminum electrolytic capacitor can be divided into four categories: lead type aluminum electrolytic capacitor;Cowhorn type aluminum electrolytic capacitor;Bolt type aluminum electrolytic capacitor;Solid aluminum electrolytic capacitor.

[0003] The existing aluminum electrolytic capacitor lacks protection for guide needle during use, and is easy to bend after accidental collision or extrusion, affecting subsequent use, so the utility model provides a kind of large capacity long life aluminum electrolytic capacitor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of large capacity long life aluminum electrolytic capacitor, with the advantage of being capable of providing protection for guide needle, solve the problem that the existing aluminum electrolytic capacitor lacks protection for guide needle during use.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of large capacity long life aluminum electrolytic capacitor, including aluminum shell and rubber plug, the aluminum shell top is equipped with rubber plug, the aluminum shell is equipped with core package, the aluminum shell upper side is provided with buckling portion, the core package is connected with guide needle, the guide needle extends to rubber plug upper side, the rubber plug upper end is equipped with fixed seat, the fixed seat is equipped with connecting frame, the connecting frame is provided with insulating sleeve, the guide needle passes through insulating sleeve, the insulating sleeve upper side is provided with expansion section, the expansion section is the taper of big on top and small on bottom.

[0006] Preferably, the buckling portion is formed by pressing and the buckling portion is bent towards the inside of the aluminum shell.

[0007] Preferably, the rubber plug is provided with an adapter slot on the outside, and the aluminum shell is extruded into the adapter slot after forming the buckling portion.

[0008] Preferably, a groove is formed in the upper end of the rubber plug, a protrusion is provided on the bottom of the fixed seat, the protrusion is inserted into the groove, and the fixed seat and the rubber plug are fixed by adhesion.

[0009] Preferably, the guide needle includes a positive guide needle and a negative guide needle, and an insulating sleeve is mounted on each of the positive guide needle and the negative guide needle.

[0010] Preferably, the aluminum shell is provided with a mounting port at the upper end, and the rubber plug is mounted in the mounting port.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、The utility model discloses a setting of the insulating sleeve can improve the stability of the guide needle, and the guide needle is protected in position, and the expansion section is arranged on the upper end of the insulating sleeve, and when the guide needle is accidentally collided or extruded, the expansion section can play a transition role when the pressure is too large and causes the guide needle to bend, and the damage degree of the guide needle is reduced.

[0013] 2、The utility model discloses a setting of the buckling part prolongs the volatilization path of electrolyte, can slow down electrolyte volatilization, thereby prolonging the service life of the capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is the internal structure schematic diagram of the aluminum shell of the utility model;

[0016] Figure 3 It is the cooperation structure schematic diagram of the insulating sleeve and the guide needle of the utility model;

[0017] Figure 4 It is the sectional structure schematic diagram of the utility model Figure 3 .

[0018] The reference signs and names in the drawing are as follows: 1, aluminum shell;2, mounting port;3, rubber plug;4, guide needle;5, core package;6, adaptive groove;7, recess;8, fixed seat;9, protruding block;10, connecting frame;11, insulating sleeve;12, expansion section;13, buckling part. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] In the description of the utility model embodiments, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model embodiments, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0021] In the utility model embodiments, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model embodiments can be understood according to the specific circumstances.

[0022] Please refer to Figures 1 to 4 The utility model provides an embodiment: a kind of large-capacity long-life aluminum electrolytic capacitor, including aluminum shell 1 and rubber plug 3, rubber plug 3 is installed at the top of aluminum shell 1, core package 5 is installed in aluminum shell 1, core package 5 selects large-capacity core package 5, core package 5 is wound by positive pole foil, negative pole foil and electrolytic paper, aluminum shell 1 upper side is provided with buckling portion 13, core package 5 is connected with guide needle 4, guide needle 4 extends to the upper side of rubber plug 3, fixed seat 8 is installed on the upper end of rubber plug 3, connecting frame 10 is installed on fixed seat 8, insulating sleeve 11 is provided on connecting frame 10, guide needle 4 passes through insulating sleeve 11, expansion section 12 is provided on the upper side of insulating sleeve 11, expansion section 12 is conical and large at the top and small at the bottom, can play the protection effect to guide needle 4.

[0023] Buckling portion 13 is formed by pressing, and buckling portion 13 is bent towards the inside of aluminum shell 1.

[0024] The outer side of rubber plug 3 is provided with an adaptive groove 6, and the adaptive groove 6 is extruded after the buckling portion 13 of the aluminum shell 1 is formed.

[0025] The rubber plug 3 is provided with a groove 7 at the upper end, and the fixed seat 8 is provided with a protrusion 9 at the bottom, which is inserted into the groove 7 to position and install, and improve the stability after connection.

[0026] The guide needle 4 comprises positive and negative guide needles, and the positive and negative guide needles are provided with insulating sleeves 11.

[0027] The aluminum shell 1 is provided with a mounting port 2 at the upper end, and the rubber plug 3 is mounted in the mounting port 2.

[0028] Working principle: through the setting of the insulating sleeve 11, the stability of the guide needle 4 can be improved, and it is limited and protected, and the expanding section 12 is arranged at the upper end of the insulating sleeve 11, through the setting of the expanding section 12, when the guide needle 4 is accidentally collided or extruded, and the pressure is large, the expanding section 12 can play a transition role to reduce the damage degree of the guide needle 4, through the setting of the buckle pressing part 13, the evaporation path of the electrolyte is prolonged, the evaporation of the electrolyte can be slowed down, so that the service life of the capacitor is prolonged.

[0029] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A large capacity long life aluminum electrolytic capacitor comprising an aluminum case (1) and a rubber plug (3), characterized by: The rubber plug (3) is mounted on the top of the aluminum shell (1), the core package (5) is mounted in the aluminum shell (1), the buckle pressing part (13) is arranged on the upper side of the aluminum shell (1), the guide needle (4) is connected with the core package (5), the guide needle (4) extends to the upper side of the rubber plug (3), the fixed seat (8) is mounted on the upper end of the rubber plug (3), the connecting frame (10) is mounted on the fixed seat (8), the insulating sleeve (11) is arranged on the connecting frame (10), the guide needle (4) passes through the insulating sleeve (11), the expansion section (12) is arranged on the upper side of the insulating sleeve (11), and the expansion section (12) is in the shape of a taper with the upper side being larger and the lower side being smaller.

2. A high-capacity long-life aluminum electrolytic capacitor according to claim 1, characterized in that: The buckle pressing part (13) is formed by pressing and is bent towards the inside of the aluminum shell (1).

3. A high-capacity long-life aluminum electrolytic capacitor according to claim 2, characterized in that: The rubber plug (3) is provided with the matching groove (6) on the outer side, and the aluminum shell (1) is extruded to the matching groove (6) after the buckle pressing part (13) is formed.

4. A high-capacity long-life aluminum electrolytic capacitor according to claim 1, characterized in that: The recess (7) is formed on the upper end of the rubber plug (3), the protruding block (9) is arranged on the bottom of the fixed seat (8), the protruding block (9) is inserted into the recess (7), and the fixed seat (8) and the rubber plug (3) are fixed by adhesion.

5. A high-capacity long-life aluminum electrolytic capacitor according to claim 1, characterized in that: The guide needle (4) comprises a positive electrode guide needle and a negative electrode guide needle, and the insulating sleeve (11) is mounted on the positive electrode guide needle and the negative electrode guide needle.

6. A high-capacity long-life aluminum electrolytic capacitor according to claim 1, characterized in that: The mounting port (2) is formed on the upper end of the aluminum shell (1), and the rubber plug (3) is mounted in the mounting port (2).

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