Anti-floating core film capacitor

Abstract

The utility model relates to the technical field of electronic component manufacturing, and discloses an anti-floating core film capacitor, which comprises a shell, a core is arranged in the shell, two guide needles are welded on two sides of the core, the tops of the two guide needles are connected with magnetic balancing weights in a sliding manner, the magnetic balancing weights are made of aluminum-nickel-cobalt materials, and the magnetic balancing weights are made of aluminum-nickel-cobalt materials. A blind hole is formed in the bottom of the magnetic balancing weight, the guide needle is connected to the interior of the blind hole in a sliding mode, a supporting assembly is installed at the bottom of the magnetic balancing weight, the magnetic balancing weight can be in a spherical shape, a conical shape, a square shape and a cylindrical shape, and the supporting assembly comprises two connecting sleeves. According to the utility model, the magnetic balancing weights in various shapes are used to ensure that the balancing weights are compatible with capacitor pins in different sizes, recovery and cyclic utilization are realized by means of magnets, the problem of floating cores is effectively solved, the assembly precision and reliability are improved, the magnetic balancing weights have the advantage of environmental protection, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electronic component manufacturing technology, and in particular to an anti-floating core thin film capacitor. Background Technology

[0002] Film capacitors are capacitors that use thin film materials as dielectrics. They have advantages such as good stability, high temperature resistance, and low leakage current. They are widely used in electronic equipment, power systems, automotive circuits and other fields. Due to their high reliability and long life, they are often used in applications requiring high electrical performance.

[0003] A film capacitor mainly consists of two conductive electrodes and a thin film dielectric in between. The electrodes are usually metal films or aluminum foils, while the dielectric material has good insulation properties. The working principle is to store electrical energy using an electric field. When a voltage is applied across the capacitor, an electric field is formed in the dielectric, and charge is stored at the interface between the electrodes and the dielectric. The capacitance is related to the electrode area, the dielectric thickness, and the relative permittivity of the dielectric material.

[0004] Existing film capacitors have advantages such as good stability, high temperature resistance, and low leakage current. However, during the capacitor production process, especially in the encapsulation process of plastic-cased capacitors, the high density of epoxy resin can cause the capacitor core to float during injection into the capacitor casing or during curing. This not only affects the assembly accuracy of the capacitor but may also result in the epoxy coating being too thin, reducing the capacitor's moisture resistance and increasing the product scrap rate. Therefore, an anti-floating film capacitor is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides an anti-floating core film capacitor, which aims to improve the problem in the existing capacitor production process where the capacitor core is prone to floating, affecting the quality of the finished capacitor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A type of anti-floating film capacitor includes a housing, inside which a core is disposed. Two leads are welded to both sides of the core. A magnetic counterweight is slidably connected to the top of each of the two leads. The magnetic counterweight is made of AlNiCo material. A blind hole is formed at the bottom of the magnetic counterweight. The leads are slidably connected inside the blind hole. A support assembly is installed at the bottom of the magnetic counterweight.

[0008] As a further description of the above technical solution:

[0009] The magnetic counterweight can be spherical, conical, square, or cylindrical.

[0010] As a further description of the above technical solution:

[0011] The support assembly includes two connecting sleeves, which are respectively fixedly connected to the bottom of the two magnetic counterweights. A support rod is fixedly connected to the side of one of the connecting sleeves, and a connecting block is fixedly connected to the side of the other connecting sleeve. A threaded rod is rotatably connected to the side of the connecting block, and one end of the threaded rod is disposed inside the support rod.

[0012] As a further description of the above technical solution:

[0013] The support rod has a threaded groove inside, and the threaded rod is threaded into the inside of the threaded groove.

[0014] As a further description of the above technical solution:

[0015] Both the support rod and the threaded rod are made of carbon steel.

[0016] As a further description of the above technical solution:

[0017] A rotating plate is fixedly connected to the outside of the threaded rod, and a rotating groove is opened inside the connecting block. The rotating plate is rotatably connected inside the rotating groove.

[0018] As a further description of the above technical solution:

[0019] The connecting sleeve has a sliding sleeve inside, which is slidably connected to the outside of the needle, and the sliding sleeve is made of polytetrafluoroethylene.

[0020] As a further description of the above technical solution:

[0021] The outer shell is made of PBT plastic, and the pin is made of tin-plated copper.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by using magnetic counterweights of different shapes, it is ensured that they can be adapted to capacitor leads of different sizes, and the magnets are used to achieve recycling and reuse, thus solving the floating core problem, improving the assembly accuracy and reliability of the capacitor, while also having environmental advantages and reducing production costs.

[0024] 2. In this utility model, with the cooperation of the connecting sleeve, support rod and threaded rod, the problem of bending the lead pin when installing the magnetic counterweight can be effectively prevented, ensuring the stability and accuracy of the lead pin, thereby improving the quality and reliability of the finished capacitor. Attached Figure Description

[0025] Figure 1This is a three-dimensional schematic diagram of an anti-floating core thin film capacitor proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a magnetic counterweight for an anti-floating core thin-film capacitor proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the rotating block structure of an anti-floating core film capacitor proposed in this utility model.

[0028] Legend:

[0029] 1. Outer shell; 2. Core; 3. Lead pin; 4. Magnetic counterweight; 5. Blind hole; 6. Support assembly; 7. Connecting sleeve; 8. Support rod; 9. Connecting block; 10. Threaded rod; 11. Threaded groove; 12. Rotating groove; 13. Rotating plate; 14. Sliding sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 and Figure 2 This utility model provides an embodiment of an anti-floating core film capacitor, including a shell 1, a core 2 disposed inside the shell 1, two leads 3 welded to both sides of the core 2, and a magnetic counterweight 4 slidably connected to the top of each of the two leads 3. The magnetic counterweight 4 is made of AlNiCo material, which has high temperature resistance, good magnetic properties and relatively stable magnetism. A blind hole 5 is opened at the bottom of the magnetic counterweight 4, and the leads 3 are slidably connected inside the blind hole 5. By setting the blind hole 5, the installation position of the magnetic counterweight 4 is defined. A support component 6 is installed at the bottom of the magnetic counterweight 4. The magnetic counterweight 4 can be spherical, conical, square and cylindrical. Different shapes of magnetic counterweight 4 are used according to the size of the leads 3.

[0032] Reference Figure 1 - Figure 3The support assembly 6 includes two connecting sleeves 7, which are fixedly connected to the bottom of two magnetic counterweights 4. A support rod 8 is fixedly connected to the side of one connecting sleeve 7, and a connecting block 9 is fixedly connected to the side of the other connecting sleeve 7. A threaded rod 10 is rotatably connected to the side of the connecting block 9. The support rod 8 and the threaded rod 10 are installed to the bottom of the magnetic counterweights 4 through the connecting sleeves 7. One end of the threaded rod 10 is located inside the support rod 8. The cooperation between the support rod 8 and the threaded rod 10 supports the guide pins 3. A threaded groove 11 is opened inside the support rod 8, and the threaded rod 10 is threaded into the threaded groove 11. The cooperation between the threaded groove 11 and the threaded rod 10 supports and adjusts the spacing of the guide pins 3 to match different distances of the guide pins 3. Both the support rod 8 and the threaded rod 10 are made of carbon steel, which is easy to process and manufacture.

[0033] Reference Figure 1 - Figure 3 A rotating plate 13 is fixedly connected to the outside of the threaded rod 10. A rotating groove 12 is opened inside the connecting block 9. The rotating plate 13 is rotatably connected inside the rotating groove 12. Through the cooperation of the rotating plate 13 and the rotating groove 12, the threaded rod 10 can rotate inside the support rod 8. A sliding sleeve 14 is provided inside the connecting sleeve 7. The sliding sleeve 14 is slidably connected to the outside of the pin 3. The sliding sleeve 14 is made of polytetrafluoroethylene. The polytetrafluoroethylene sliding sleeve 14 facilitates the sliding of the connecting sleeve 7 from the pin 3. The outer shell 1 is made of PBT plastic material, which has excellent heat resistance and can work stably for a long time at high temperature. The pin 3 is made of tin-plated copper material, which has high strength, good thermal stability, and good ductility.

[0034] Working principle: Based on the size of the capacitor lead 3, different shapes of magnetic counterweights 4, such as spherical, conical, square, and cylindrical, are used to ensure that they can be adapted to different capacitor models. The magnetic counterweights 4 are installed on the capacitor lead 3, ensuring that the blind hole 5 of the magnetic counterweights 4 is aligned with the lead 3. After the epoxy resin has cured, the magnetic counterweights 4 are attracted away by a magnet set above the conveying equipment, which solves the floating core problem, improves the assembly accuracy and product reliability of the capacitor, and realizes the recycling and reuse of the magnetic counterweights 4, which has environmental advantages.

[0035] Rotate the threaded rod 10 to engage with the threaded groove 11, and adjust the distance between the two connecting sleeves 7 to match the distance of different types of pins 3. When installing the magnetic counterweight 4, the connecting sleeve 7 fixed at its bottom will be installed together on the outside of the pin 3 to support the pin 3 and prevent the pin 3 from bending when installing the magnetic counterweight 4, thus ensuring the quality of the finished capacitor. When the magnet removes the magnetic counterweight 4, it will also remove the support rod 8 and the threaded rod 10 together, achieving recycling.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-floating core film capacitor, comprising a casing (1), characterized in that: The outer shell (1) has a core (2) inside. Two pins (3) are welded to both sides of the core (2). A magnetic counterweight (4) is slidably connected to the top of each of the two pins (3). The magnetic counterweight (4) is made of AlNiCo material. A blind hole (5) is opened at the bottom of the magnetic counterweight (4). The pins (3) are slidably connected inside the blind hole (5). A support component (6) is installed at the bottom of the magnetic counterweight (4).

2. The anti-floating core film capacitor according to claim 1, characterized in that: The magnetic counterweight (4) can be spherical, conical, square, or cylindrical.

3. The anti-floating core film capacitor according to claim 1, characterized in that: The support assembly (6) includes two connecting sleeves (7), which are fixedly connected to the bottom of the two magnetic counterweights (4). A support rod (8) is fixedly connected to the side of one of the connecting sleeves (7), and a connecting block (9) is fixedly connected to the side of the other connecting sleeve (7). A threaded rod (10) is rotatably connected to the side of the connecting block (9), and one end of the threaded rod (10) is located inside the support rod (8).

4. The anti-floating core film capacitor according to claim 3, characterized in that: The support rod (8) has a threaded groove (11) inside, and the threaded rod (10) is threadedly connected inside the threaded groove (11).

5. A non-floating core film capacitor according to claim 3, characterized in that: Both the support rod (8) and the threaded rod (10) are made of carbon steel.

6. A non-floating core film capacitor according to claim 3, characterized in that: A rotating plate (13) is fixedly connected to the outside of the threaded rod (10), and a rotating groove (12) is opened inside the connecting block (9). The rotating plate (13) is rotatably connected inside the rotating groove (12).

7. The anti-floating core film capacitor according to claim 3, characterized in that: The connecting sleeve (7) is provided with a sliding sleeve (14) inside. The sliding sleeve (14) is slidably connected to the outside of the needle (3). The sliding sleeve (14) is made of polytetrafluoroethylene.

8. A non-floating core film capacitor according to claim 1, characterized in that: The outer shell (1) is made of PBT plastic material, and the pin (3) is made of tin-plated copper material.

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