Fixed aluminum electrolytic capacitor

Abstract

The utility model discloses a fixed type aluminum electrolytic capacitor, which comprises a shell, an inner core, two leading-out strips, a butt joint terminal group and a cover plate, the inner core formed by wrapping materials such as an anode foil layer, a cathode foil layer and electrolytic paper is arranged in the shell, and the two leading-out strips are arranged on the inner core. The lower ends of the two leading-out strips are respectively connected with the positive foil layer and the negative foil layer in the inner core, and the upper ends of the two leading-out strips are connected with a butt joint terminal group. According to the fixed aluminum electrolytic capacitor, the two supporting legs are arranged on one side close to the positive terminal table, so that an operator can identify a positive electrode and a negative electrode conveniently, and the two supporting legs are matched with the positive terminal table and the negative terminal table to support the capacitor in four directions, so that the stability and the supporting strength between the capacitor and a connecting part are enhanced; and the falling of the contact pin and the lead caused by vibration is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a fixed aluminum electrolytic capacitor. Background Art

[0002] An aluminum electrolytic capacitor is an electronic component used to store and release electrical charge and filter AC signals in circuits. It consists of aluminum foil as the positive plate, aluminum foil coated with dielectric aluminum oxide as the negative plate, and an electrode coating.

[0003] Aluminum electrolytic capacitors are commonly used in applications such as DC power filtering, pulse circuits, and signal coupling. They usually have large capacitance and high operating voltage, and can work stably for a long time.

[0004] Aluminum electrolytic capacitors are widely used. When installed on some special equipment, the requirements for the anti-vibration performance of the capacitor are relatively strict. Without good anti-vibration function, when the circuit board is subjected to severe vibration, the capacitor will also vibrate, causing the capacitor to loosen or even break the electrode. The capacitor will also collide with other electronic components, causing damage to the electronic components on the circuit board.

[0005] However, the existing aluminum electrolytic capacitors and connecting components are only connected at two points of the terminal. Even if the positive and negative terminals are welded to the connecting components, vibration may cause the capacitor pins and leads to fall off, causing the capacitor to lose electrical connection or be damaged. In addition, during the welding process,

[0006] In view of the above problems, it is urgent to carry out innovative design based on the original capacitor. Utility Model Content

[0007] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution of fixed aluminum electrolytic capacitor which is significantly different from the existing technology, so as to solve the problems mentioned in the above background technology that the capacitor is easy to slip from the hand, has poor waterproof performance and is inconvenient to use.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed aluminum electrolytic capacitor, comprising a shell, an inner core, a lead-out bar, a docking terminal group, and a cover plate, wherein the shell is provided with an inner core wrapped by a positive electrode foil layer, a negative electrode foil layer, an electrolytic paper and other materials, and two lead-out bars are provided on the inner core, and the lower ends of the two lead-out bars are respectively connected to the positive electrode foil layer and the negative electrode foil layer in the inner core, and the upper ends of the two lead-out bars are connected to the docking terminal group, and the docking terminal group is arranged on the end surface of the cover plate away from the inner core, and the end surface of the cover plate is provided with a supporting foot, and the cover plate is arranged in the opening of the end of the shell.

[0009] Preferably, the docking terminal group includes a positive terminal block, a negative terminal block, and a guiding strip. The bottom of the positive terminal block is connected to the positive electrode foil layer of the inner core through a lead-out strip, and the bottom of the negative terminal block is connected to the negative electrode foil layer of the inner core through a lead-out strip. A guiding strip is provided on both the positive terminal block and the negative terminal block.

[0010] Preferably, the positive terminal block or the negative terminal block and the guiding strip form a "C" - shaped structure, and an opening for positioning and stably connecting the end of the component is provided in the horizontal area of each guiding strip.

[0011] Preferably, the negative terminal block is provided with a rough surface pattern for easy identification. The positive terminal block and the negative terminal block are arranged on both sides of the end face of the cover plate, and the horizontal area of each guiding strip faces the center of the cover plate to avoid bumping.

[0012] Preferably, the side of the horizontal area of the guiding strip away from the cover plate is set as an inclined block shape, the side of the horizontal area of the guiding strip close to the cover plate is set as a plane, and the guiding strip forms a hook - like shape.

[0013] Preferably, both the support feet and the guiding strip are set as an inverted "L" - shaped structure. The support feet are arranged on both sides of the positive terminal block, and the support feet and the positive terminal block form a triangular shape in a top - down view.

[0014] Preferably, the protective layer is made of polyester film material, and the protective layer is used to prevent short - circuit of the other two welding needles that are not connected to the lead - out strips.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this fixed - type aluminum electrolytic capacitor, by setting a rough surface pattern on the surface of the negative terminal block, it helps the operator to identify the positive and negative poles under special circumstances, such as in a dim environment, when the positive and negative signs are too small to be clearly seen due to poor eyesight, or when the positive and negative signs are blocked by oil stains or damaged and it is not easy to distinguish the positive and negative poles.

[0016] By arranging the two support feet on the side close to the positive terminal block, while further facilitating the operator to identify the positive and negative poles, the two support feet cooperate with the positive terminal block and the negative terminal block to support the capacitor in four directions, thereby enhancing the stability and support strength between it and the connecting component, and reducing the detachment of the inserted pins and leads caused by vibration.

[0017] By providing an opening in the horizontal area of the guiding strip, during welding connection, the lead or welding wire of the connecting component can pass through the opening, thus avoiding the influence of the operator's hand shaking during the welding process on the welding effect. At the same time, the horizontal area of the guiding strip also improves the contact stability between the capacitor and the connecting component.

[0018] By setting the guide bar and the support foot away from the cover plate at one end to be in a hook shape, after welding, the welding area is located between the bottom of the hook and the terminal block, so that it is more stable and firm when dealing with vibration forces in multiple directions and away from the cover plate, and the guide bar and the support foot can be set as elastic parts, which form a hook-engaged connection with the corresponding slot on the circuit board during plug-in installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model in a disassembled state;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the guide strip of the utility model;

[0022] Figure 4 This is a schematic diagram of the front view structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the top view of the actual structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the actual structure of the inner core of the utility model;

[0025] Figure 7 This is a schematic diagram of the physical structure of the protective layer of the utility model.

[0026] In the figure: 1. Shell; 2. Inner core; 3. Lead strip; 4. Butt terminal group; 401. Positive terminal platform; 402. Negative terminal platform; 403. Guide strip; 5. Cover plate; 6. Support foot; 7. Protective layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-7, the utility model provides a technical solution: a fixed aluminum electrolytic capacitor, which includes a housing 1, an inner core 2, lead strips 3, a docking terminal group 4, a positive terminal platform 401, a negative terminal platform 402, a guiding strip 403, a cover plate 5, support feet 6, and a protective layer 7. An inner core 2 formed by winding materials such as a positive electrode foil layer, a negative electrode foil layer, and electrolytic paper is arranged inside the housing 1. Two lead strips 3 are arranged on the inner core 2, and the lower ends of the two lead strips 3 are respectively connected to the positive electrode foil layer and the negative electrode foil layer in the inner core 2. The upper ends of the two lead strips 3 are connected to a docking terminal group 4. The docking terminal group 4 is arranged on the end face of the cover plate 5 away from the inner core 2. Support feet 6 are arranged on this end face of the cover plate 5, and the cover plate 5 is arranged in the opening at the end of the housing 1.

[0029] The docking terminal group 4 includes a positive terminal platform 401, a negative terminal platform 402, and a guiding strip 403. The bottom of the positive terminal platform 401 is connected to the positive electrode foil layer of the inner core 2 through a lead strip 3, and the bottom of the negative terminal platform 402 is connected to the negative electrode foil layer of the inner core 2 through a lead strip 3. A guiding strip 403 is arranged on both the positive terminal platform 401 and the negative terminal platform 402.

[0030] The positive terminal platform 401 or the negative terminal platform 402 and the guiding strip 403 form a "C"-shaped structure, and an opening for positioning and stably connecting the end of a component is provided in the horizontal area of each guiding strip 403.

[0031] A rough surface pattern for easy identification is arranged on the negative terminal platform 402. The positive terminal platform 401 and the negative terminal platform 402 are arranged on both sides of the end face of the cover plate 5, and the horizontal area of each guiding strip 403 faces the center of the cover plate 5 to avoid being knocked.

[0032] The side of the horizontal area of the guiding strip 403 away from the cover plate 5 is set as an inclined block shape, the side of the horizontal area of the guiding strip 403 close to the cover plate 5 is set as a plane, and the guiding strip 403 forms a hook shape.

[0033] Both the support feet 6 and the guiding strip 403 are set as an inverted "L" - shaped structure. The support feet 6 are arranged on both sides of the positive terminal platform 401, and the support feet 6 and the positive terminal platform 401 form a triangular shape in a top view.

[0034] The protective layer 7 is made of polyester film material, and the protective layer 7 is used to prevent short - circuit of the other two welding needles that are not connected to the lead strips 3.

[0035] Working principle: According to Figure 1As shown, when in use, the operator distinguishes the positive and negative poles by the rough surface pattern on the negative terminal stage 402, or distinguishes them by the support foot 6 being closer to the positive terminal stage 401. When welding and connecting the connecting parts, the guide bar 403 and the support foot 6 are in contact with the area to be connected with the connecting part. Since the guide bar 403 and the support foot 6 are arranged in a claw shape at one end away from the cover plate 5, after welding, the welding area is located between the bottom of the claw and the terminal stage, so that it is more stable and firm when dealing with vibration forces in multiple directions and away from the cover plate 5;

[0036] When plugging and installing, since the guide bar 403 and the supporting foot 6 are elastic parts, when inserted into the circuit board, the guide bar 403, the supporting foot 6 and the corresponding slot on the circuit board form a connection in a snap-fitting and hooking state, which is convenient for installation and can also provide stability and shock resistance in four directions; an opening is set in the lateral area of ​​the guide bar 403, so that the lead or welding wire can be guided and stabilized during the welding process, thereby facilitating the operator to perform welding operations. This is the working principle of the fixed aluminum electrolytic capacitor.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixed aluminum electrolytic capacitor, comprising a housing (1), an inner core (2), a lead strip (3), a docking terminal group (4), and a cover plate (5), characterized in that: Inside the housing (1), there is an inner core (2) formed by winding a positive electrode foil layer, a negative electrode foil layer, and electrolytic paper material. Two lead-out strips (3) are provided on the inner core (2). The lower ends of the two lead-out strips (3) are respectively connected to the positive electrode foil layer and the negative electrode foil layer in the inner core (2), and the upper ends of the two lead-out strips (3) are connected to a docking terminal group (4). The docking terminal group (4) is arranged on the end face of the cover plate (5) away from the inner core (2). Support feet (6) are provided on this end face of the cover plate (5), and the cover plate (5) is arranged in the opening at the end of the housing (1). A protective layer (7) is provided on the end face of the cover plate (5) away from the inner core (2).

2. The fixed aluminum electrolytic capacitor according to claim 1, characterized in that: The docking terminal group (4) includes a positive terminal platform (401), a negative terminal platform (402), and a guiding strip (403). The bottom of the positive terminal platform (401) is connected to the positive electrode foil layer of the inner core (2) through the lead-out strip (3), and the bottom of the negative terminal platform (402) is connected to the negative electrode foil layer of the inner core (2) through the lead-out strip (3). A guiding strip (403) is provided on both the positive terminal platform (401) and the negative terminal platform (402).

3. The fixed aluminum electrolytic capacitor according to claim 2, characterized in that: The positive terminal platform (401) or the negative terminal platform (402) and the guiding strip (403) form a "C"-shaped structure, and an opening for positioning and stably connecting the end of a component is provided in the horizontal area of each guiding strip (403).

4. The fixed aluminum electrolytic capacitor according to claim 2, characterized in that: The negative terminal platform (402) is provided with a rough surface pattern for easy identification. The positive terminal platform (401) and the negative terminal platform (402) are arranged on both sides of the end face of the cover plate (5), and the horizontal area of each guiding strip (403) faces the center of the cover plate (5) to avoid collision.

5. The fixed aluminum electrolytic capacitor according to claim 2, characterized in that: The side of the horizontal area of the guiding strip (403) away from the cover plate (5) is set as an inclined block shape, the side of the horizontal area of the guiding strip (403) close to the cover plate (5) is set as a plane, and the guiding strip (403) forms a hook shape.

6. The fixed aluminum electrolytic capacitor according to claim 1, characterized in that: Both the support feet (6) and the guiding strips (403) are set as an inverted "L"-shaped structure. The support feet (6) are arranged on both sides of the positive terminal platform (401), and the support feet (6) and the positive terminal platform (401) form a triangular shape when viewed from above.

7. The fixed aluminum electrolytic capacitor according to claim 1, characterized in that: The protective layer (7) is made of polyester film material, and the protective layer (7) is used to prevent short circuit of the welding needles of the other two non-connected lead-out strips.

Images