Capacitor with safety film

Abstract

This utility model discloses a capacitor with a safety film, belonging to the field of capacitor technology. A capacitor with a safety film includes a capacitor body and a protective shell. The capacitor body includes capacitor elements, terminals, an inner film, a protective film, and an outer shell. The capacitor elements are connected to the terminals. A connecting seat is provided at the protective shell, and a detachable top cover is provided at the connecting seat. At least two protective sleeves are provided on the top cover, and the protective sleeves are inserted into the terminals inside the capacitor body. Several ribs are provided on the outer wall of the protective sleeves. A connecting groove is provided inside the connecting seat. The capacitor with a safety film provided by this utility model, with protective sleeves and ribs on the top cover, can retract the terminals into the protective sleeves. The ribs on the protective sleeves increase the strength of the protective sleeves, preventing deformation under pressure, thereby preventing the terminals from bending due to pressure and ensuring the condition of the terminals.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor technology, specifically relating to a capacitor with a safety film. Background Technology

[0002] Traditional polyester film capacitors are made by winding metallized polyester film, spraying metal solder on the ends, wrapping with polyester tape, and encapsulating both ends with epoxy resin. They have advantages such as low loss, light weight, excellent self-healing properties, good temperature characteristics, high reliability, high precision, excellent voltage resistance, and a variety of specifications.

[0003] However, when high voltage and high current exceeding the design value are applied to existing capacitors, the internal components of the capacitors are easily damaged, which may lead to the capacitors exploding. This can damage surrounding components and pose a safety hazard. Meanwhile, during transportation, the capacitor terminals are prone to bending due to compression. Although this does not affect the use of the terminals, bending can cause changes in the diameter of the bent portion, leading to changes in resistance at the bent portion and hindering circuit connection during subsequent use. Therefore, this application proposes a capacitor with a safety film. Utility Model Content

[0004] The purpose of this invention is to provide a capacitor with a safety film to solve the problems mentioned in the background art, such as the capacitor's internal components being easily damaged when subjected to high voltage and high current exceeding the design value, leading to the capacitor exploding; and the capacitor terminals being easily bent due to compression, which is not conducive to the connection of the circuit during subsequent use of the capacitor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a capacitor with a safety film, comprising a capacitor body and a protective shell, wherein the capacitor body includes a capacitor element, terminals, an inner film, a protective film, and a shell, and the capacitor element is connected to the terminals; A connecting seat is provided at the protective shell, and a detachable top cover is provided at the connecting seat. At least two protective sleeves are provided on the top cover. The protective sleeves are inserted into the terminals inside the capacitor body. Several ribs are provided on the outer wall of the protective sleeves. The connecting seat is provided with a connecting groove, which mates with the top cover. A plug rod is inserted into the connecting seat, and a slot that mates with the plug rod is provided in the top cover. The protective shell is provided with a mounting bracket and a guide rail. The mounting bracket is provided with a sliding groove that cooperates with the guide rail. The guide rail is installed on the protective shell. A positioning bolt is screwed into the mounting bracket. The connecting seat is provided with a positioning groove that cooperates with the positioning bolt.

[0006] Preferably, the protective film is adhered to the outer wall layer of the inner membrane, and the inner membrane includes an inner conductive film and an inner safety film, wherein the inner conductive film is the outer wall layer of the inner membrane and the inner safety film is the inner wall layer of the inner membrane.

[0007] Preferably, the protective film includes an outer conductive film and an outer safety film, with the outer conductive film covering the outer safety film.

[0008] Preferably, a polyurethane insulation layer is provided between the outer shell and the protective film, the polyurethane insulation layer is bonded to the outer shell, and the inner ring of the polyurethane insulation layer is bonded to the outer wall of the protective film.

[0009] Preferably, the inner ring of the protective sleeve mates with the outer wall of the terminal.

[0010] Preferably, the ribs are arranged in a circumferential array around the center line of the protective sleeve.

[0011] Preferably, the insertion rod is provided with a threaded structure, and the insertion rod and the connecting seat are connected by threads.

[0012] Preferably, the connector is provided with a tripod, and the plug is inserted into the tripod. There are two plugs, and the two plugs are located on both sides of the connector.

[0013] Preferably, the mounting bracket includes a first vertical plate, a second vertical plate, and a connecting plate. The first vertical plate and the second vertical plate are fixedly connected by the connecting plate, and the second vertical plate is provided with a long groove.

[0014] Preferably, two guide rails are provided, and the two guide rails are symmetrically distributed about the center line of the capacitor body.

[0015] Beneficial effects: I. This utility model provides a capacitor with a safety film. By providing a protective shell, a connecting seat, a top cover, and other components on the outside of the capacitor body, the protective shell and other components can house the capacitor body, preventing the capacitor body from directly contacting external components during transportation. This can prevent the capacitor body itself from being directly squeezed. The top cover is provided with a protective sleeve, ribs, and other components, which can house the terminals inside the protective sleeve. The ribs on the protective sleeve can increase the strength of the protective sleeve, preventing the protective sleeve from deforming when squeezed, thereby preventing the terminals from bending due to compression and ensuring the condition of the terminals.

[0016] II. The present invention provides a capacitor with a safety film. By setting an inner film and a protective film inside the capacitor body, the two are combined with each other. When the current or voltage exceeds the set value, the capacitor body will automatically disconnect. This can prevent the capacitor body from working continuously in a high voltage and high current environment and prevent the capacitor body from burning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the capacitor with a safety film in this utility model; Figure 2 This is a bottom view of the capacitor with a safety film according to this utility model; Figure 3 This is a side view of the capacitor with a safety film according to this utility model; Figure 4 This is one of the internal structural diagrams of the capacitor with a safety film in this utility model; Figure 5 This is the second schematic diagram of the internal structure of the capacitor with a safety film in this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Capacitor body; 101. Capacitor element; 102. Terminal; 103. Inner membrane; 104. Protective membrane; 105. Polyurethane insulation layer; 106. Outer shell; 2. Protective shell; 3. Connecting seat; 4. Top cover; 5. Protective sleeve; 6. Rib plate; 7. Insert rod; 8. Tripod; 9. Mounting bracket; 10. Guide rail; 11. Positioning bolt. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figures 1-5 As shown in the figure, this utility model provides a capacitor with a safety film, including a capacitor body 1 and a protective shell 2. The capacitor body 1 includes a capacitor element 101, a terminal 102, an inner film 103, a protective film 104, and a shell 106. The capacitor element 101 is connected to the terminal 102. The capacitor element 101 and the protective film 104 are adhered to the outer wall layer of the inner film 103. The inner film 103 includes an inner conductive film and an inner safety film. The inner conductive film is the outer wall layer of the inner film 103, and the inner safety film is the inner wall layer of the inner film 103. The films are connected together by vapor deposition or bonding.

[0021] Specifically, the protective film 104 includes an outer conductive film and an outer safety film, with the outer conductive film covering the outer safety film. By setting an inner film 103 and a protective film 104 inside the capacitor body 1, the two are combined with each other. When the current or voltage exceeds the set value, the capacitor body 1 will automatically disconnect. This can prevent the capacitor body 1 from working continuously in a high-voltage, high-current environment and prevent the capacitor body 1 from burning.

[0022] It should be noted that a polyurethane insulation layer 105 is provided between the outer shell 106 and the protective film 104. The polyurethane insulation layer 105 is attached to the outer shell 106, and the inner ring of the polyurethane insulation layer 105 is attached to the outer wall of the protective film 104.

[0023] To protect the capacitor body 1, a connecting seat 3 is provided at the protective shell 2. A detachable top cover 4 is provided at the connecting seat 3, and at least two protective sleeves 5 are provided on the top cover 4. The protective sleeves 5 are inserted into the terminals 102 inside the capacitor body 1. The inner ring of the protective sleeve 5 mates with the outer wall of the terminal 102. It should be noted that several ribs 6 are provided on the outer wall of the protective sleeve 5, arranged in a circumferential array around the center line of the protective sleeve 5. The ribs 6 increase the strength of the protective sleeve 5, preventing it from deforming under pressure, and thus preventing the terminal 102 from bending due to pressure, ensuring the condition of the terminal 102.

[0024] Specifically, the connecting seat 3 is provided with a connecting groove, which mates with the top cover 4. A plug rod 7 is inserted into the connecting seat 3, and a slot that mates with the plug rod 7 is provided in the top cover 4. More specifically, the plug rod 7 is provided with a threaded structure, and the plug rod 7 is connected to the connecting seat 3 by threads.

[0025] In order to shield the plug rod 7, a tripod 8 is provided on the connecting seat 3. The plug rod 7 is inserted into the tripod 8. There are two plug rods 7, and the two plug rods 7 are located on both sides of the connecting seat 3.

[0026] To facilitate the subsequent connection of the capacitor body 1 to other components, a mounting bracket 9 and a guide rail 10 are provided on the outside of the protective shell 2. The mounting bracket 9 has a sliding groove that mates with the guide rail 10. The guide rail 10 is mounted on the protective shell 2. There are two guide rails 10, and the two guide rails 10 are symmetrically distributed around the center line of the capacitor body 1. It should be noted that a positioning bolt 11 is screwed into the mounting bracket 9, and a positioning groove that mates with the positioning bolt 11 is provided in the connecting seat 3.

[0027] Specifically, the mounting bracket 9 includes a first vertical plate, a second vertical plate, and a connecting plate. The first vertical plate and the second vertical plate are fixedly connected by the connecting plate, and the second vertical plate is provided with an elongated groove. The elongated groove serves as a hole for connecting with other components.

[0028] In summary, this utility model embodiment provides a capacitor with a safety film. By providing components such as a protective shell 2, a connecting seat 3, and a top cover 4 on the outside of the capacitor body 1, the protective shell 2 and other components can house the capacitor body 1, preventing the capacitor body 1 from directly contacting external components during transportation. This avoids the capacitor body 1 being directly squeezed. The top cover 4 is provided with components such as a protective sleeve 5 and ribs 6, which can house the terminals 102 inside the protective sleeve 5. The ribs 6 on the protective sleeve 5 can increase the strength of the protective sleeve 5, preventing the protective sleeve 5 from deforming when squeezed, thereby preventing the terminals 102 from bending due to compression and ensuring the condition of the terminals 102.

[0029] By setting an inner membrane 103 and a protective membrane 104 inside the capacitor body 1, the two are combined with each other. When the current or voltage exceeds the set value, the capacitor body 1 will automatically disconnect. This can prevent the capacitor body 1 from working continuously in a high voltage and high current environment and prevent the capacitor body 1 from burning.

[0030] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A capacitor with a safety film, comprising a capacitor body (1) and a protective shell (2), characterized in that, The capacitor body (1) includes a capacitor element (101), a terminal (102), an inner diaphragm (103), a protective diaphragm (104), and a housing (106), wherein the capacitor element (101) is connected to the terminal (102); A connecting seat (3) is provided at the protective shell (2), and a detachable top cover (4) is provided at the connecting seat (3). At least two protective sleeves (5) are provided on the top cover (4). The protective sleeves (5) are inserted into the terminals (102) inside the capacitor body (1). Several ribs (6) are provided on the outer wall of the protective sleeves (5). The connecting seat (3) is provided with a connecting groove, which cooperates with the top cover (4). A plug rod (7) is inserted into the connecting seat (3), and a slot that cooperates with the plug rod (7) is provided in the top cover (4). The protective shell (2) is provided with a mounting bracket (9) and a guide rail (10). The mounting bracket (9) is provided with a sliding groove, which cooperates with the guide rail (10). The guide rail (10) is installed on the protective shell (2).

2. A capacitor with a safety film as described in claim 1, characterized in that, The protective film (104) is pasted on the outer wall layer of the inner film (103). The inner film (103) includes an inner conductive film and an inner safety film. The inner conductive film is the outer wall layer of the inner film (103), and the inner safety film is the inner wall layer of the inner film (103).

3. A capacitor with a safety film as described in claim 2, characterized in that, The protective film (104) includes an outer conductive film and an outer safety film, with the outer conductive film covering the outer safety film.

4. A capacitor with a safety film as described in claim 3, characterized in that, A polyurethane insulation layer (105) is provided between the outer shell (106) and the protective film (104). The polyurethane insulation layer (105) is bonded to the outer shell (106), and the inner ring of the polyurethane insulation layer (105) is bonded to the outer wall of the protective film (104).

5. A capacitor with a safety film as described in claim 1, characterized in that, The inner ring of the protective sleeve (5) mates with the outer wall of the terminal (102).

6. A capacitor with a safety film as described in claim 1, characterized in that, The ribs (6) are arranged in a circular array around the center line of the protective sleeve (5).

7. A capacitor with a safety film as described in claim 1, characterized in that, The insertion rod (7) is provided with a threaded structure, and the insertion rod (7) and the connecting seat (3) are connected by threads.

8. A capacitor with a safety film as described in claim 1, characterized in that, The connecting seat (3) is provided with a tripod (8), and the insert rod (7) is inserted into the tripod (8). There are two insert rods (7), and the two insert rods (7) are located on both sides of the connecting seat (3).

9. A capacitor with a safety film as described in claim 1, characterized in that, The mounting bracket (9) includes a first vertical plate, a second vertical plate, and a connecting plate. The first vertical plate and the second vertical plate are fixedly connected by the connecting plate, and the second vertical plate is provided with a long groove.

10. A capacitor with a safety film as described in claim 1, characterized in that, Two guide rails (10) are provided, and the two guide rails (10) are symmetrically distributed about the center line of the capacitor body (1).

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