Double-sided metallized film capacitor

Abstract

The utility model discloses a double-sided metallized film capacitor which comprises a double-sided metallized film capacitor body. The double-sided metallized film capacitor has the beneficial effects that the outer protection cylinder, the fixed top plate, the fixed top ring and the top mounting cover are arranged, so that the protection on the outer side of the double-sided metallized film capacitor body is realized; the double-sided metallized film capacitor body is prevented from being directly influenced by external factors, the threat of environmental factors of mechanical impact to the performance and reliability of the capacitor is prevented, the service life is prolonged, the positioning top plate and the positioning bottom groove in the bottom of the top mounting cover are positioned by arranging the positioning top plate and the positioning bottom groove, and the service life of the capacitor is prolonged. Through threaded installation between the limiting bolts and the threaded holes, the limiting bolts and the limiting holes formed in the positioning top plate are installed in a limiting mode, and the top installation cover is installed on the fixed top ring in a limiting mode.

Description

Technical Field

[0001] This utility model relates to the field of thin film capacitor technology, specifically a double-sided metallized thin film capacitor. Background Technology

[0002] Double-sided metallized film capacitors are composed of double-sided metallized polypropylene films and non-metallized polypropylene films wound or stacked. These capacitors use metal foil or metal evaporation layers as electrodes and plastic films (such as polypropylene or polyester) as dielectrics. They are formed into cylindrical or flat structures through winding or stacking. The capacitor stores and releases electrical energy electrostatically, with the conductive materials on both electrodes separated by a dielectric, storing the energy within the dielectric. Double-sided metallized film capacitors utilize the metal layer on the metallized film as electrodes, which, together with the dielectric film, constitute the core of the capacitor. The overall structure of the capacitor is formed through winding or stacking. When a voltage is applied across the capacitor, charge accumulates on the metal layer, forming an electric field, thereby storing electrical energy. However, existing double-sided metallized film capacitors lack an external protective casing. When facing complex and changing operating environments, their internal sensitive components and delicate structures are easily affected by external factors. Mechanical shocks pose a threat to the performance and reliability of the capacitor, shortening its service life and even causing failures. Utility Model Content

[0003] The purpose of this invention is to provide a double-sided metallized film capacitor to solve the problem mentioned in the background art that the sensitive elements and fine structure inside the double-sided metallized film capacitor are easily affected by external factors. Environmental factors such as mechanical shock may threaten the performance and reliability of the capacitor, shorten its service life, or even cause failure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a double-sided metallized thin-film capacitor, comprising:

[0005] Double-sided metallized thin-film capacitor body;

[0006] The outer protective sleeve is located on the outside of the double-sided metallized film capacitor body;

[0007] Vent holes are equidistantly located inside the outer protective cylinder, and a filter screen is installed inside each vent hole.

[0008] Fixed top plates are installed at equal intervals on the top of the outer protective cylinder;

[0009] A fixed top ring is installed on top of the fixed top plate;

[0010] A top mounting cover is mounted on the top of the fixed top ring, and is located above the double-sided metallized film capacitor body;

[0011] A mounting assembly is arranged on the top of the fixed top ring, and is used for mounting between the fixed top ring and the top mounting cover.

[0012] As a preferred scheme of the utility model, the mounting assembly comprises a positioning top plate, the positioning top plate is symmetrically fixed to the top of the fixed top ring, and a plurality of positioning bottom grooves matched with the fixed top ring are symmetrically formed in the bottom of the top mounting cover.

[0013] As a preferred scheme of the utility model, a plurality of threaded holes matched with the positioning bottom grooves are symmetrically formed in the inside of the top mounting cover, limiting bolts matched with the threaded holes are symmetrically arranged on the outside of the top mounting cover, and a limiting hole matched with the limiting bolt is formed in the inside of the positioning top plate.

[0014] As a preferred scheme of the utility model, a fixed bottom disc is fixed to the bottom of the outer protection cylinder, a limiting groove is formed in the top of the fixed bottom disc, and a bottom limiting plate matched with the limiting groove is fixed to the bottom of the double-sided metallized film capacitor body.

[0015] As a preferred scheme of the utility model, a pin is symmetrically arranged on the top of the double-sided metallized film capacitor body.

[0016] As a preferred scheme of the utility model, a first outer protection layer is fixed to the outside of the double-sided metallized film capacitor body, a second protection layer is fixed to the outside of the first outer protection layer, the first outer protection layer is a polyester film layer, and the second protection layer is a waterproof film layer.

[0017] Compared with the prior art, the utility model has the beneficial effects that the utility model is provided with the outer protection cylinder, the fixed top plate, the fixed top ring and the top mounting cover, realizes the protection of the outside of the double-sided metallized film capacitor body, prevents the double-sided metallized film capacitor body from being directly affected by external factors, prevents the environmental factors of mechanical impact from threatening the performance and reliability of the capacitor, prolongs the service life, realizes the positioning of the positioning top plate and the positioning bottom groove in the bottom of the top mounting cover through the positioning top plate and the positioning bottom groove, limits the installation of the limiting bolt and the limiting hole in the positioning top plate through the threaded installation between the limiting bolt and the threaded hole, and limits the installation of the top mounting cover on the fixed top ring. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is overall structure schematic diagram of the utility model;

[0019] Figure 2 It is top mounting cover dismounting structure schematic diagram of the utility model;

[0020] Figure 3 It is fixed bottom plate structure schematic view of the utility model;

[0021] Figure 4 It is filter screen structure schematic view of the utility model;

[0022] Figure 5 It is structure schematic view of the utility model one outer protective layer, two protective layer.

[0023] In the drawing: 1, double-sided metallized film capacitor body;2, outer protective cylinder;3, air hole;4, filter screen;5, fixed top plate;6, fixed top ring;7, top installation cover;8, pin;9, one outer protective layer;10, two protective layer;11, limit bolt;12, threaded hole;13, positioning bottom groove;14, positioning top plate;15, bottom limit plate;16, fixed bottom plate;17, limit groove;18, limit hole. DETAILED DESCRIPTION

[0024] 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, rather than 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.

[0025] Please refer to Figures 1 to 5 The utility model provides a technical scheme: a double-sided metallized film capacitor, include: double-sided metallized film capacitor body 1;Outer protective cylinder 2 sets up in the outside of double-sided metallized film capacitor body 1;Air hole 3 equidistance is opened in the inside of outer protective cylinder 2, and the inside fixed connection of air hole 3 has filter screen 4;Fixed top plate 5 equidistance fixed connection is in the top of outer protective cylinder 2;Fixed top ring 6 fixed connection is in the top of fixed top plate 5;Top installation cover 7 installs in the top of fixed top ring 6, and top installation cover 7 is located in the above of double-sided metallized film capacitor body 1;Installation assembly sets up in the top of fixed top ring 6, is used for the installation between fixed top ring 6 and top installation cover 7.

[0026] It can be understood that the utility model of outside protection cylinder 2, fixed top plate 5 and fixed top ring 6 are sleeved on the outside of double-sided metallized film capacitor body 1, double-sided metallized film capacitor body 1 is through evaporating metal on the double sides of film, forms composite film, then it is wound, laminated capacitor, double-sided metallized film capacitor body 1 usually by metallized film, aluminum foil, film as electrode, polypropylene plastic film as dielectric, through the machine winding, in addition, double-sided metallized film capacitor body 1 still includes epoxy resin encapsulation, gold spraying layer and plastic shell part, fixed bottom disc 16 supports the bottom of double-sided metallized film capacitor body 1, the limit groove 17 in the top of fixed bottom disc 16 is limited with the bottom limit plate 15 of the bottom of double-sided metallized film capacitor body 1, the position of outside protection cylinder 2 on the outside of double-sided metallized film capacitor body 1 is limited and fixed, the positioning bottom groove 13 in the bottom of top mounting cover 7 is positioned between the positioning top plate 14 in the top of fixed top ring 6, positioning top plate 14 extends into positioning bottom groove 13, limit bolt 11 is screwed with threaded hole 12, limit bolt 11 enters the limit hole 18 in positioning top plate 14, limit bolt 11 is limited to the installation position of positioning top plate 14 in positioning bottom groove 13, installs and fixes between top mounting cover 7 and fixed top ring 6, installs top mounting cover 7 on the top of fixed top ring 6, outside protection cylinder 2 protects the outside of double-sided metallized film capacitor body 1, passes through the multiple air holes 3 in the inside of outside protection cylinder 2 and carries out ventilation and heat dissipation, carries out dustproof treatment through filter screen 4.

[0027] Please refer to Figure 1 And Figure 5 , the mounting assembly includes positioning top plate 14, positioning top plate 14 is symmetrically connected on the top of fixed top ring 6, and the bottom of top mounting cover 7 is equidistantly provided with a plurality of positioning bottom grooves 13 matched with fixed top ring 6.

[0028] It can be understood that the utility model is positioned between positioning top plate 14 and positioning bottom groove 13, and top mounting cover 7 is positioned and installed on the top of fixed top ring 6.

[0029] Please refer to Figure 1 And Figure 5 , the inside of top mounting cover 7 is equidistantly provided with a plurality of threaded holes 12 matched with positioning bottom groove 13, the outside of top mounting cover 7 is symmetrically provided with limit bolt 11 matched with threaded hole 12, and the inside of positioning top plate 14 is provided with limit hole 18 matched with limit bolt 11.

[0030] It can be understood that the utility model is in screw hole 12 screw installation limit bolt 11, limit bolt 11 into limit hole 18, limit bolt 11 is limited to the position of the positioning top plate 14 in the positioning bottom groove 13 through limit hole 18, and the top mounting cover 7 is installed on the top of the fixed top ring 6.

[0031] Please refer to Figure 1 And Figure 5 The bottom of the outer protective cylinder 2 is fixedly connected with a fixed bottom plate 16, the top of the fixed bottom plate 16 is provided with a limiting groove 17, and the bottom of the double-sided metallized film capacitor body 1 is fixedly connected with a bottom limiting plate 15 matched with the limiting groove 17.

[0032] It can be understood that the utility model is in screw hole 12 screw installation limit bolt 11, limit bolt 11 into limit hole 18, limit bolt 11 is limited to the position of the positioning top plate 14 in the positioning bottom groove 13 through limit hole 18, and the top mounting cover 7 is installed on the top of the fixed top ring 6.

[0033] Please refer to Figure 1 And Figure 5 The top of the double-sided metallized film capacitor body 1 is provided with a pin 8.

[0034] It can be understood that the utility model is convenient for the connection between the external and the double-sided metallized film capacitor body 1.

[0035] Please refer to Figure 1 And Figure 5 The outer side of the double-sided metallized film capacitor body 1 is fixedly connected with a first outer protective layer 9, and the outer side of the first outer protective layer 9 is fixedly connected with a second protective layer 10.

[0036] It can be understood that the utility model is in screw hole 12 screw installation limit bolt 11, limit bolt 11 into limit hole 18, limit bolt 11 is limited to the position of the positioning top plate 14 in the positioning bottom groove 13 through limit hole 18, and the top mounting cover 7 is installed on the top of the fixed top ring 6.

[0037] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation of the utility model.

[0038] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implying a number of the indicated technical features, so the features with "first", "second", "third", "fourth" can be explicitly or implicitly include at least one of the features.

[0039] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, 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, unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0040] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A double-sided metalized film capacitor, characterized by, The utility model relates to a double-sided metallized film capacitor body (1); Outer protection cylinder (2) is arranged on the outside of double-sided metallized film capacitor body (1); Ventilation hole (3) is equidistantly arranged in the inside of outer protection cylinder (2), and the inside of ventilation hole (3) is provided with filter screen (4); Fixed top plate (5) is equidistantly arranged on the top of outer protection cylinder (2); Fixed top ring (6) is arranged on the top of fixed top plate (5); Top mounting cover (7) is mounted on the top of fixed top ring (6), and top mounting cover (7) is located above double-sided metallized film capacitor body (1); Mounting assembly is arranged on the top of fixed top ring (6) and is used for mounting between fixed top ring (6) and top mounting cover (7). The mounting assembly includes positioning top plate (14), and positioning top plate (14) is symmetrically connected on the top of fixed top ring (6), and a plurality of positioning bottom grooves (13) are equidistantly arranged on the bottom of top mounting cover (7) and matched with fixed top ring (6).

2. A double-sided metalized film capacitor according to claim 1, characterized in that: A plurality of screw holes (12) are equidistantly arranged on the inside of top mounting cover (7) and matched with positioning bottom groove (13), and the outside of top mounting cover (7) is symmetrically provided with limiting bolt (11) matched with screw hole (12), and the inside of positioning top plate (14) is provided with limiting hole (18) matched with limiting bolt (11).

3. A double-sided metalized film capacitor according to claim 2, characterized in that: The bottom of outer protection cylinder (2) is fixedly connected with fixed bottom disc (16), the top of fixed bottom disc (16) is provided with limiting groove (17), and the bottom of double-sided metallized film capacitor body (1) is fixedly connected with bottom limiting plate (15) matched with limiting groove (17).

4. A double-sided metalized film capacitor as defined in claim 1, wherein: The top of double-sided metallized film capacitor body (1) is symmetrically provided with pin (8).

5. A double-sided metalized film capacitor as defined in claim 1, wherein: The outside of double-sided metallized film capacitor body (1) is fixedly connected with first outer protective layer (9), the outside of first outer protective layer (9) is fixedly connected with second protective layer (10), the first outer protective layer (9) is polyester film layer, and the second protective layer (10) is waterproof film layer.

6. A double-sided metalized film capacitor as defined in claim 1, wherein: ​

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