A round can, flat lead capacitor

Abstract

The utility model discloses a kind of round shell flat core capacitors, including flat core film capacitor core and plastic shell, the both ends of flat core film capacitor core are equipped with gold spraying layer, and lead-out electrode is equipped on gold spraying layer, the outer periphery of the plastic shell is circular, the flat core film capacitor core is horizontally arranged in the inner cavity of plastic shell, there is also epoxy resin filling layer in inner cavity, epoxy resin filling layer covers flat core film capacitor core, the lead-out electrode passes through epoxy resin filling layer, and it is stretched out from the top of plastic shell;The bottom of plastic shell is also equipped with connecting stud.The utility model uses the assembly mode that flat core capacitor core is horizontally arranged in short shell, meets installation space requirement;In addition, the center of shell bottom is provided with connecting stud, which can be directly screwed into installation carrier or connected and fixed with nut after passing through installation carrier, and locking is more reliable.

Description

Technical Field

[0001] This utility model relates to a capacitor, and more particularly to a flat-core capacitor with a round shell. Background Technology

[0002] Capacitors with a capacitance of 1μF and a voltage rating of 400V feature high voltage resistance, small capacitance, low ESR, and good high-frequency performance, making them widely applicable in power supply filtering, signal coupling, and other scenarios. Currently, these capacitors mainly include ceramic capacitors, electrolytic capacitors, and safety capacitors. However, ceramic capacitors have poor temperature stability, electrolytic capacitors have polarity requirements, and poor high-frequency performance; safety capacitors have tall casings, typically fixed to the casing by a mounting bracket or by connecting lugs on the casing, which are then secured to the mounting surface with screws (the connecting lugs are prone to breakage).

[0003] See Figure 6 The diagram shows the structure of a safety capacitor, comprising a flat-core film capacitor core 1 and a plastic casing 3. The flat-core film capacitor core has gold plating layers at both ends, and lead-out electrodes 2 are located on the gold plating layers. The plastic casing is square, and the flat-core film capacitor core is vertically positioned within the inner cavity of the plastic casing. An epoxy resin potting layer 5 covers the flat-core film capacitor core within the inner cavity. The lead-out electrodes pass through the epoxy resin potting layer and extend from the top of the plastic casing. It is evident that the plastic casing of this capacitor is relatively tall, making it unsuitable for applications with limited installation space. Utility Model Content

[0004] The purpose of this invention is to provide a flat-core capacitor with a round shell that has a simple and reasonable structure, a thin thickness, and is easy to install.

[0005] The purpose of this utility model is achieved as follows: A round-shell flat-core capacitor includes a flat-core film capacitor core and a plastic shell. The flat-core film capacitor core has gold-plated layers at both ends, and lead-out electrodes are provided on the gold-plated layers. The outer periphery of the plastic shell is circular. The flat-core film capacitor core is placed flat within the inner cavity of the plastic shell, which also contains an epoxy resin potting layer covering the flat-core film capacitor core. The lead-out electrodes pass through the epoxy resin potting layer and extend from the top of the plastic shell. A connecting stud is also provided at the bottom of the plastic shell.

[0006] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the bottom of the inner cavity of the plastic shell is provided with a support platform, and the upper end of the connecting stud is provided with a connector. The connector is embedded in the support platform and fixedly connected to it; the flat-core film capacitor core is placed on the support platform. The support platform also plays a positioning role in the installation of the flat-core film capacitor core, so that the installation height of the capacitor core is consistent during the production of each capacitor.

[0007] As a further embodiment, the top edge of the plastic shell is provided with an inwardly turned edge.

[0008] As a further embodiment, the upper end of the inner cavity of the plastic shell is provided with an annular concave surface, and the side of the annular concave surface is inclined outward, making the upper outer periphery of the plastic shell relatively thin, forming a certain elasticity, which can be slightly stretched, so that the flat core film capacitor core can be put into the plastic shell and can be tightly fitted with the inner cavity wall of the plastic shell, thereby further reducing the overall outer diameter of the capacitor.

[0009] As a further solution, the edges of the inner flange are rounded to prevent the flat-core film capacitor core from being scratched by the sharp corners of the inner flange when it is installed into the plastic casing.

[0010] As a further improvement, the bottom of the plastic casing is provided with anti-slip texture.

[0011] As a further improvement, the anti-slip texture is ripple-shaped, thereby increasing the creepage distance between the lead-out electrode and the connecting stud.

[0012] As a further embodiment, the outer periphery of the flat-core film capacitor core is wound with an insulating film; the capacitance of the flat-core film capacitor core is 1μF and the withstand voltage is 400V.

[0013] As a further option, the lead-out electrode is a quick-connect insert electrode.

[0014] As a further embodiment, the epoxy resin potting layer contacts the bottom surface of the inner flange, and the corner of the flat core film capacitor core is located within the vertical orthographic projection range of the inner flange.

[0015] The beneficial effects of this utility model are as follows: (1) The present invention adopts the assembly method of placing the flat core capacitor core flat inside the short outer shell to meet the installation space requirements; in addition, a connecting stud is set at the center of the bottom of the outer shell, which can be directly screwed into the mounting carrier or passed through the mounting carrier and connected and fixed with the nut, making the locking more reliable.

[0016] (2) The outer circumference of the plastic shell of this utility model is circular, which makes it easier to know the diameter range of rotation during installation and to reserve space when laying out the circuit.

[0017] (3) The capacitor of this utility model has no polarity and has good overall performance in terms of temperature stability, high frequency performance and safety. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the thin-film capacitor core and its outer shell in one embodiment of the present invention.

[0019] Figure 2This is a schematic diagram of the structure of the thin-film capacitor core of this utility model after it is installed in the outer casing.

[0020] Figure 3 for Figure 2 A top-view structural diagram.

[0021] Figure 4 for Figure 3 A schematic diagram of the AA cross-sectional structure.

[0022] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 6 This is a schematic diagram of the existing technology structure. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments: See Figures 1-5 As shown, a flat-core capacitor with a round outer shell includes a flat-core film capacitor core 1 and a plastic outer shell 3. The flat-core film capacitor core 1 has gold-plated layers 11 at both ends, and lead-out electrodes 2 are provided on the gold-plated layers 11. The outer periphery of the plastic outer shell 3 is circular. The flat-core film capacitor core 1 is placed flat within the inner cavity 31 of the plastic outer shell 3. An epoxy resin potting layer 5 is also present within the inner cavity 31, covering the flat-core film capacitor core 1. The lead-out electrodes 2 pass through the epoxy resin potting layer 5 and extend from the top of the plastic outer shell 3. A connecting stud 4 is also provided at the bottom of the plastic outer shell 3. When the flat-core film capacitor core 1 is placed flat, its height is less than its width.

[0025] The bottom of the inner cavity 31 of the plastic shell 3 is provided with a support platform 34, and the upper end of the connecting stud 4 is provided with a connector 41. The connector 41 is embedded in the support platform 34 and fixedly connected to the support platform 34; the flat core film capacitor core 1 is placed on the support platform 34.

[0026] The top edge of the plastic shell 3 is provided with an inward flange 32.

[0027] The upper end of the inner cavity 31 of the plastic shell 3 is provided with an annular concave surface 33, and the side of the annular concave surface 33 is inclined outward. The epoxy resin potting layer 5 is in contact with the bottom surface of the inner flange 32, and the corner of the flat core film capacitor core 1 is located within the vertical orthographic projection range of the inner flange 32.

[0028] The inner flange 32 has a rounded edge.

[0029] The bottom of the plastic shell 3 is provided with a ripple-shaped anti-slip texture 35.

[0030] An insulating film is wound around the outer periphery of the flat-core film capacitor core 1; the capacitance of the flat-core film capacitor core 1 is 1μF and the withstand voltage is 400V.

[0031] The lead-out electrode 2 is a quick-connect insert electrode.

[0032] The installation method is as follows: The mounting carrier of the capacitor has screw holes (not shown in the figure). Hold the outer shell of the capacitor, align the connecting stud 4 and screw it in until the anti-slip texture 35 on the bottom of the plastic shell 3 presses against the surface of the mounting carrier, thus completing the capacitor fixing.

[0033] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A flat-core capacitor with a round outer shell, comprising a flat-core film capacitor core (1) and a plastic outer shell (3), wherein the two ends of the flat-core film capacitor core (1) are provided with gold sputtering layers (11), and lead-out electrodes (2) are provided on the gold sputtering layers (11), characterized in that: The outer periphery of the plastic shell (3) is circular. The flat core film capacitor core (1) is laid flat in the inner cavity (31) of the plastic shell (3). There is also an epoxy resin potting layer (5) in the inner cavity (31). The epoxy resin potting layer (5) covers the flat core film capacitor core (1). The lead electrode (2) passes through the epoxy resin potting layer (5) and extends from the top of the plastic shell (3). The bottom of the plastic shell (3) is also provided with a connecting stud (4).

2. The flat-core capacitor with a round outer shell according to claim 1, characterized in that: The plastic shell (3) has a base (34) at the bottom of the inner cavity (31), and the connecting stud (4) has a connector (41) at the upper end. The connector (41) is embedded in the base (34) and fixedly connected to the base (34). The flat core film capacitor core (1) is placed on the base (34).

3. The flat-core capacitor with a round outer shell according to claim 1, characterized in that: The top edge of the plastic shell (3) is provided with an inward flange (32).

4. The round-shell flat-core capacitor according to claim 3, characterized in that: The upper end of the inner cavity (31) of the plastic shell (3) is provided with an annular concave surface (33), and the side of the annular concave surface (33) is inclined outward.

5. The flat-core capacitor with a round outer shell according to claim 3, characterized in that: The inner flange (32) has a rounded edge.

6. The flat-core capacitor with a round outer shell according to claim 1, characterized in that: The bottom of the plastic shell (3) is provided with anti-slip texture (35).

7. The flat-core capacitor with a round outer shell according to claim 6, characterized in that: The anti-slip texture (35) is ripple-shaped.

8. The flat-core capacitor with a round outer shell according to claim 1, characterized in that: The outer periphery of the flat-core film capacitor core (1) is wound with an insulating film; the capacitance of the flat-core film capacitor core (1) is 1μF and the withstand voltage is 400V.

9. The flat-core capacitor with a round outer shell according to claim 1, characterized in that: The lead-out electrode (2) is a quick-connect insert electrode.

10. The flat-core capacitor with a round outer shell according to claim 3, characterized in that: The epoxy resin potting layer (5) is in contact with the bottom surface of the inner flange (32), and the corner of the flat core film capacitor core (1) is located within the vertical orthographic projection range of the inner flange (32).

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