Aluminum shell ceiling fan capacitor

Abstract

The utility model discloses an aluminum shell ceiling fan capacitor, including aluminum shell, lid and capacitor core, be equipped with pin on the lid, the end surface of capacitor core is equipped with the electrode that leads out, and the electrode that leads out is electrically connected with pin, and the aluminum shell is equipped with first inner chamber, and the lid fixedly arranged is in the opening of first inner chamber, still including insulating inner cup, and the insulating inner cup is equipped with second inner chamber, and the insulating inner cup is placed into the first inner chamber of aluminum shell, and the lower part between the outer wall of insulating inner cup and the lower part of first inner chamber is equipped with epoxy glue fixed layer, the capacitor core is encapsulated in second inner chamber through epoxy glue fixed seal layer, and the top surface height of epoxy glue fixed seal layer is higher than the top surface height of epoxy glue fixed layer, the capacitor core of the utility model fills in the insulating shell of smaller volume through epoxy resin first, and the lower part of insulating shell is fixed with the lower part in aluminum shell through a little epoxy resin, thereby avoiding that the inner chamber of aluminum shell is filled with epoxy resin, greatly reduces the epoxy dosage, reduces the cost, and makes the capacitor lightweight.

Description

Technical Field

[0001] This utility model relates to a capacitor, and more particularly to an aluminum-cased ceiling fan capacitor. Background Technology

[0002] Aluminum-cased capacitors have excellent heat dissipation properties, making them suitable for temperature-sensitive environments or high-load applications. In some tropical countries, ceiling fans are primary appliances for cooling and regulating airflow. Because ceiling fans operate continuously for extended periods, specific requirements are placed on the heat dissipation performance of the capacitors. This is mainly reflected in the use of aluminum-cased capacitors, with specific requirements for the size of the aluminum casing to ensure sufficient heat dissipation area.

[0003] See Figure 5 As shown, an aluminum-cased ceiling fan capacitor includes an aluminum casing 1, a cover 4, and a capacitor core 3. The cover 4 has leads 41, and the end face of the capacitor core 3 has lead-out electrodes 31 electrically connected to the leads 41. The cover 4 is fixedly disposed on the opening of a first inner cavity 12, and the capacitor core 3 is disposed within the inner cavity of the aluminum casing 1. The inner cavity is also filled with an epoxy resin layer 5 covering the capacitor core 3. In this structure, when the capacitor core 3 adopts a small volume structure, the space between the capacitor core and the inner wall of the aluminum casing 1 is relatively large, requiring more epoxy resin to be filled. Utility Model Content

[0004] The purpose of this invention is to provide an aluminum-cased ceiling fan capacitor with a simple and reasonable structure, low epoxy resin usage, low cost, and good heat dissipation effect.

[0005] The purpose of this utility model is achieved as follows: An aluminum-cased ceiling fan capacitor includes an aluminum casing, a cover, and a capacitor core. The cover has leads, and the end face of the capacitor core has lead electrodes electrically connected to the leads. The aluminum casing has a first inner cavity, and the cover is fixedly disposed on the opening of the first inner cavity. It also includes an insulating inner cup with a second inner cavity. The insulating inner cup is placed inside the first inner cavity of the aluminum casing, and an epoxy resin fixing layer is provided between the lower part of the outer wall of the insulating inner cup and the lower part of the first inner cavity. The capacitor core is encapsulated in the second inner cavity by the epoxy resin sealing layer, and the top surface of the epoxy resin sealing layer is higher than the top surface of the epoxy resin fixing layer.

[0006] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the wall thickness of the insulating inner cup is less than 1 mm.

[0007] As a further option, the capacitor core is a flat-core capacitor core.

[0008] As a further embodiment, the outer periphery of the flat-core capacitor core is wrapped with an insulating film.

[0009] As a further embodiment, the cover is a rubber cover, and the inner wall of the opening of the first inner cavity of the aluminum shell is provided with an inner convex ring. The cover is set in the opening and is sealed with the bottom wall of the first inner cavity or the inner convex ring. The top surface of the aluminum shell is provided with an inwardly turned-up edge, which is pressed and fastened to the edge of the top surface of the cover.

[0010] As a further embodiment, the pin is fixedly connected to the cover by a rivet, the rivet passes through the cover, and the inner end of the rivet is electrically connected to the lead electrode through a solder pad.

[0011] As a further solution, the lead-out electrode is tensioned.

[0012] The beneficial effects of this utility model are as follows: In this invention, the capacitor core is first encapsulated in a small insulating shell with epoxy resin. The lower part of the insulating shell is then fixed to the lower part of the aluminum shell with a small amount of epoxy resin, thereby avoiding the epoxy resin filling the inner cavity of the aluminum shell, greatly reducing the amount of epoxy used, lowering the cost, and making the capacitor lighter.

[0013] The epoxy resin layer on the outside of the capacitor core of this invention is thinner, resulting in better heat dissipation of the capacitor core. Attached Figure Description

[0014] Figure 1 This is an exploded structural diagram of an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the assembled three-dimensional structure of this utility model.

[0016] Figure 3 This is a top view of the structure of this utility model.

[0017] Figure 4 for Figure 3 A schematic diagram of the AA cross-sectional structure.

[0018] Figure 5 This is a cross-sectional structural diagram of the existing technology. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: See Figures 1-4As shown, an aluminum-cased ceiling fan capacitor includes an aluminum casing 1, a cover 4, and a capacitor core 3. The cover 4 has pins 41, and the end face of the capacitor core 3 has lead-out electrodes 31, which are electrically connected to the pins 41. The aluminum casing 1 has a first inner cavity 12, and the cover 4 is fixedly disposed on the opening of the first inner cavity 12. It also includes an insulating inner cup 2, which has a second inner cavity 21. The insulating inner cup 2 is placed inside the first inner cavity 12 of the aluminum casing 1. An epoxy resin fixing layer 51 is provided between the lower part of the outer wall of the insulating inner cup 2 and the lower part of the first inner cavity 12. The capacitor core 3 is encapsulated in the second inner cavity 21 by an epoxy resin sealing layer 52, and the top surface height of the epoxy resin sealing layer 52 is higher than the top surface height of the epoxy resin fixing layer 51.

[0020] The insulating inner cup 2 is a plastic inner cup with a wall thickness of less than 1 mm (in this embodiment, the wall thickness is less than 0.5 mm).

[0021] The capacitor core 3 is a flat core capacitor core 3, which is smaller in size.

[0022] The outer periphery of the flat core capacitor core 3 is wrapped with an insulating film.

[0023] The cover 4 is a rubber cover. The inner wall of the opening of the first inner cavity 12 of the aluminum shell 1 is provided with an inner protruding ring 11. The cover 4 is placed inside the opening and is sealed to the bottom wall of the first inner cavity 12 or the inner protruding ring 11. The top surface of the aluminum shell 1 is provided with an inwardly turned-up edge 13, which is pressed tightly against the edge of the top surface of the cover 4. The rubber cover and the aluminum shell 1 form a seal, preventing moisture from entering and extending the service life.

[0024] The pin 41 is fixedly connected to the cover 4 by a rivet 42. The rivet 42 passes through the cover 4, and the inner end of the rivet 42 is electrically connected to the lead electrode 31 through a solder pad 32.

[0025] The lead electrode 31 is tightened so that when the capacitor core 3 has a problem and overheats, the rubber cover bulges outward and deforms, which can break the solder pad 32 of the lead electrode 31, thus playing a role in explosion prevention.

[0026] Both the epoxy adhesive fixing layer 51 and the epoxy adhesive sealing layer 52 mentioned above are epoxy resins.

[0027] 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. An aluminum-cased ceiling fan capacitor, comprising an aluminum casing (1), a cover (4), and a capacitor core (3), wherein the cover (4) is provided with leads (41), and the end face of the capacitor core (3) is provided with lead electrodes (31), the lead electrodes (31) being electrically connected to the leads (41), the aluminum casing (1) being provided with a first inner cavity (12), and the cover (4) being fixedly disposed on the opening of the first inner cavity (12); characterized in that: It also includes an insulating inner cup (2), which has a second inner cavity (21). The insulating inner cup (2) is placed inside the first inner cavity (12) of the aluminum shell (1). An epoxy adhesive fixing layer (51) is provided between the lower part of the outer wall of the insulating inner cup (2) and the lower part of the first inner cavity (12). The capacitor core (3) is encapsulated in the second inner cavity (21) by an epoxy adhesive sealing layer (52). The top surface height of the epoxy adhesive sealing layer (52) is higher than the top surface height of the epoxy adhesive fixing layer (51).

2. The aluminum-cased ceiling fan capacitor according to claim 1, characterized in that: The wall thickness of the insulating inner cup (2) is less than 1 mm.

3. The aluminum-cased ceiling fan capacitor according to claim 1, characterized in that: The capacitor core (3) is a flat core capacitor core (3).

4. The aluminum-cased ceiling fan capacitor according to claim 3, characterized in that: The outer periphery of the flat core capacitor core (3) is wrapped with an insulating film.

5. The aluminum-cased ceiling fan capacitor according to claim 3, characterized in that: The cover (4) is a rubber cover. The inner wall of the opening of the first inner cavity (12) of the aluminum shell (1) is provided with an inner protruding ring (11). The cover (4) is set in the opening and is sealed with the bottom wall of the first inner cavity (12) or the inner protruding ring (11). The top surface of the aluminum shell (1) is provided with an inwardly turned-up edge (13). The inwardly turned-up edge (13) is pressed and fastened with the top edge of the cover (4).

6. The aluminum-cased ceiling fan capacitor according to claim 1, characterized in that: The pin (41) is fixedly connected to the cover (4) by a rivet (42). The rivet (42) passes through the cover (4), and the inner end of the rivet (42) is electrically connected to the lead electrode (31) through a solder pad (32).

7. The aluminum-cased ceiling fan capacitor according to claim 1, characterized in that: The lead-out electrode (31) is tightened.

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