Direct current coupling capacitor

Abstract

The utility model belongs to the technical field of capacitors, and particularly relates to a direct-current coupling capacitor which comprises a core column, a lower flange, a threaded sleeve and a bottom plate are arranged at the bottom of the core column, a threaded groove is formed in the bottom plate, a sealing oil-resistant rubber ring is movably arranged in the threaded groove, a porcelain sleeve and a connecting rod are fixedly arranged on the bottom plate, and the connecting rod is fixedly connected with the threaded groove. A connecting rod is arranged on the core column, a leveling washer is arranged on the connecting rod, a nut is spirally connected to the connecting rod, a first protective shell and a second protective shell are rotationally connected to the connecting rod, a buckle is rotationally arranged on the first protective shell, a clamping groove is formed in the second protective shell, an upper flange and a cover plate are arranged at the top of the core column, and a groove is formed in the cover plate. According to the utility model, the protective sleeve surrounding the original porcelain bushing is arranged outside the original porcelain bushing, and the two protective sleeves with special shapes are arranged on the same rotating rod, so that the porcelain bushing cannot be blocked during rotation, and the porcelain bushing is wrapped inside by matching with the fixing functions of the buckles and the clamping grooves on the porcelain bushing, thereby realizing the protection of the porcelain bushing.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a direct current coupling capacitor. Background Art

[0002] Coupling capacitors are used in electronic circuits to pass the desired AC signal and block the unwanted DC components. These unwanted DC signals come from electronic devices or the front stage of the electronic circuit. In audio systems, the DC component affects the quality of the desired signal by introducing noise. In addition, the DC signal can affect the performance of the power amplifier and increase distortion.

[0003] The existing capacitors can refer to the utility model with patent publication number CN214203465U, which discloses a coupling capacitor device, "including: a capacitor body; a first fixed block, the first fixed block is fixedly installed on the top of the capacitor body; a second fixed block, the second fixed block is fixedly installed on the bottom of the capacitor body; two cleaning mechanisms, the two cleaning mechanisms are respectively arranged on both sides of the capacitor body, the cleaning mechanism includes a threaded rod, a slider, and a driven gear, the threaded rod is rotatably installed on the first fixed block and the second fixed block, the slider is threadedly sleeved on the threaded rod, and the driven gear is fixedly sleeved on the bottom end of the threaded rod; two protection mechanisms, both protection mechanisms are arranged on the first fixed block, the fixing mechanism includes an arc-shaped clamping block, two connecting blocks, a first slide bar, a slot, a first pull block, a protection box, a second slide bar, and a spring. The coupling capacitor device provided by the utility model has the function of conveniently removing oil stains." However, a porcelain sleeve is usually used on the outside of the capacitor to protect the internal core group. At the same time, the porcelain sleeve has the function of insulation and keeping the core group in a constant temperature environment, but the porcelain sleeve is easily collided by objects in the external environment and damaged.

[0004] In order to solve the above problems, a DC coupling capacitor is proposed in the present application. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a DC coupling capacitor, including a core column, a lower flange, a threaded sleeve and a bottom plate are fixedly provided at the bottom of the core column, a threaded groove is provided on the bottom plate, a sealing oil-resistant rubber ring is movably provided in the threaded groove, a porcelain sleeve and a connecting rod are fixedly provided on the bottom plate, a flattened washer is fixedly provided on the connecting rod, a nut is spirally connected to the connecting rod, a first protective shell and a second protective shell are rotatably connected to the connecting rod, a buckle is rotatably provided on the first protective shell, a slot is provided on the second protective shell, an upper flange and a cover plate are fixedly provided on the top of the core column, and a groove is provided on the cover plate.

[0006] Preferably, a sealing oil-resistant rubber ring is also provided in the lower flange and the groove, and the sealing oil-resistant rubber ring is movably connected to the core column.

[0007] Preferably, the lower flange is located in the threaded sleeve, the threaded sleeve is located in the threaded groove, the upper flange is located in the groove, the shape of the groove is threaded, and the shape of the sealing oil-resistant rubber ring is ring-shaped.

[0008] Preferably, the bottom of the porcelain sleeve is fixedly connected to the cover plate, the connecting rod passes through the cover plate, and a threaded protrusion is fixedly provided on the top of the connecting rod.

[0009] Preferably, the flattened washer is movably connected to the upper surface of the cover plate, the nut is movably connected to the upper surface of the flattened washer, and the flattened washer and the nut are both rotatably connected to the threaded protrusion at the top of the connecting rod.

[0010] Preferably, the first protective shell is rotatably connected to the lower half of the connecting rod, and the second protective shell is rotatably connected to the upper half of the connecting rod.

[0011] The above technical solution of the utility model has the following beneficial technical effects:

[0012] The utility model provides a protective sleeve surrounding the original porcelain sleeve outside the original porcelain sleeve, thereby preventing the porcelain sleeve from being damaged by collision. Two protective sleeves with special shapes are provided on the same rotating rod, which not only do not generate obstructions during rotation, but also cooperate with the fixing functions of the buckles and the slots above to wrap the porcelain sleeve inside, thereby protecting the porcelain sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0015] Figure 3 This is a side view of the structure of the utility model;

[0016] Figure 4 It is a bottom structural schematic diagram of the utility model.

[0017] Reference numerals:

[0018] 1. Core column; 101. Lower flange; 102. Upper flange; 103. Threaded sleeve; 2. Bottom plate; 201. Threaded groove; 3. Cover plate; 301. Groove; 4. Sealing oil-resistant rubber ring; 5. Porcelain sleeve; 6. Connecting rod; 601. Flat washer; 602. Nut; 7. First protective shell; 701. Buckle; 8. Second protective shell; 801. Slot. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0021] A DC coupling capacitor provided by some embodiments of the present utility model is described below in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] Combination Figure 1-4 As shown, a DC coupling capacitor provided by the utility model includes a core column 1, a lower flange 101, a threaded sleeve 103 and a bottom plate 2 are fixedly provided at the bottom of the core column 1, a threaded groove 201 is provided on the bottom plate 2, a sealing oil-resistant rubber ring 4 is movably provided in the threaded groove 201, a porcelain sleeve 5 and a connecting rod 6 are fixedly provided on the bottom plate 2, a flattened washer 601 is fixedly provided on the connecting rod 6, a nut 602 is spirally connected to the connecting rod 6, a first protective shell 7 and a second protective shell 8 are rotatably connected to the connecting rod 6, a buckle 701 is rotatably provided on the first protective shell 7, a slot 801 is provided on the second protective shell 8, an upper flange 102 and a cover plate 3 are fixedly provided on the top of the core column 1, a groove 301 is provided on the cover plate 3, and a sealing oil-resistant rubber ring 4 is also provided in the lower flange 101 and the groove 301 The rubber ring 4 is in the shape of an annular sealing oil-resistant rubber ring 4, and is movably connected to the core column 1. The lower flange 101 is located in the threaded sleeve 103, and the threaded sleeve 103 is located in the threaded groove 201. The upper flange 102 is located in the groove 301, and the shape of the groove 301 is threaded. The bottom of the porcelain sleeve 5 is fixedly connected to the cover plate 3, and the connecting rod 6 passes through the cover plate 3. A threaded protrusion is fixedly provided on the top of the connecting rod 6. The flattened washer 601 is movably connected to the upper surface of the cover plate 3, and the nut 602 is movably connected to the upper surface of the flattened washer 601. The flattened washer 601 and the nut 602 are both rotatably connected to the threaded protrusion on the top of the connecting rod 6. The first protective shell 7 is rotatably connected to the lower half of the connecting rod 6, and the second protective shell 8 is rotatably connected to the upper half of the connecting rod 6.

[0024] Specifically, an upper flange 102 and a lower flange 101 are respectively provided at the upper and lower ends of the core column 1 to enable installation and fixation with external equipment. A threaded sleeve 103 surrounding the lower flange 101 is fixedly provided at the bottom of the core column 1 to enable installation in conjunction with an external threaded button to increase the fixing ability and make the device more stable. A bottom plate 2 is movably provided at the bottom of the core column 1. A threaded groove 201 is provided on the bottom plate 2 to surround the lower flange 101 and the threaded sleeve 103 to enhance the fixing ability of the connection. At the same time, a sealing and oil-resistant seal is placed in the threaded groove 201 and the threaded sleeve 103. The rubber ring 4 is provided to prevent the device from leaking oil when in use. A cover plate 3 is movably provided on the top of the core column 1. A groove 301 is provided on the cover plate 3 so that the top can also be installed and fixed with external equipment. A sealing oil-resistant rubber ring 4 is also placed in the groove 301 to prevent the device from leaking oil. A porcelain sleeve 5 is fixedly installed on the bottom plate 2, and the porcelain sleeve 5 wraps the core column 1 inside to achieve an insulating effect. At the same time, the porcelain sleeve 5 made of porcelain can keep the environment of the core column 1 at a constant temperature, thereby preventing the state of the core column 1 from being affected by excessive or insufficient temperature. There is also a seal on the bottom plate 2. A connecting rod 6 is fixedly welded, and the top of the connecting rod 6 passes through the cover plate 3. A threaded protrusion is fixedly welded on the top of the connecting rod 6. A flattened washer 601 is rotatably provided on the threaded protrusion. A nut 602 is spirally provided on the top of the connecting rod 6. The flattened washer 601 is located below the nut 602 to strengthen the fixing ability of the nut 602 so that the connecting rod 6 will not move or rotate. A first protective shell 7 is rotatably connected to the lower half of the connecting rod 6, and a second protective shell 8 is rotatably connected to the upper half of the connecting rod 6 so that the first protective shell 7 and the second protective shell 8 are rotated when rotating. No collision will occur, and at the same time, the first protective shell 7 and the second protective shell 8 have the same shape, so that the first protective shell 7 and the second protective shell 8 can completely wrap the porcelain sleeve 5 when closed. A buckle 701 is rotatably provided on the first protective shell 7, and a slot 801 is opened on the second protective shell 8, so that after the first protective shell 7 and the second protective shell 8 are closed, the user can rotate the buckle 701 and clamp the buckle 701 in the slot 801 to fix the first protective shell 7 and the second protective shell 8, prevent the first protective shell 7 and the second protective shell 8 from separating, and finally complete the protection work.

[0025] The working principle and use process of the utility model are as follows: first, the various parts of the capacitor are installed, and then the annular sealing oil-resistant rubber ring 4 is respectively placed in the threaded sleeve 103, the threaded groove 201 and the groove 301, and then the external equipment connection is spirally connected with the threaded sleeve 103, the threaded groove 201 and the groove 301, so as to achieve the effect of fixed installation and make the device more stable. Finally, the first protective shell 7 and the second protective shell 8 on the connecting rod 6 are rotated to make the other sides of the first protective shell 7 and the second protective shell 8 contact, and then the buckle 701 on the first protective shell 7 is rotated to make the buckle 701 buckled in the buckle groove 801, so as to complete the fixation of the first protective shell 7 and the second protective shell 8, realize the protection of the porcelain sleeve 5, and also improve the protection ability of the core column 1.

[0026] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A DC coupling capacitor, comprising a core column (1), characterized in that: The bottom of the core column (1) is provided with a lower flange (101), a threaded sleeve (103) and a bottom plate (2); the bottom plate (2) is provided with a threaded groove (201); a sealing oil-resistant rubber ring (4) is movably provided in the threaded groove (201); a porcelain sleeve (5) and a connecting rod (6) are fixedly provided on the bottom plate (2); a flattening washer (601) is fixedly provided on the connecting rod (6); a nut (602) is spirally connected to the connecting rod (6); a first protective shell (7) and a second protective shell (8) are rotatably connected to the connecting rod (6); a buckle (701) is rotatably provided on the first protective shell (7); a slot (801) is provided on the second protective shell (8); an upper flange (102) and a cover plate (3) are provided on the top of the core column (1); a groove (301) is provided on the cover plate (3).

2. A DC coupling capacitor according to claim 1, characterized in that: The lower flange (101) and the groove (301) are also provided with a sealing oil-resistant rubber ring (4), and the sealing oil-resistant rubber ring (4) is movably connected to the core column (1).

3. A DC coupling capacitor according to claim 1, characterized in that: The lower flange (101) is located in the threaded sleeve (103), the threaded sleeve (103) is located in the threaded groove (201), the upper flange (102) is located in the groove (301), the groove (301) is in the shape of a thread, and the sealing oil-resistant rubber ring (4) is in the shape of a ring.

4. A DC coupling capacitor according to claim 1, characterized in that: The bottom of the porcelain sleeve (5) is fixedly connected to the cover plate (3), the connecting rod (6) passes through the cover plate (3), and a threaded protrusion is fixedly provided on the top of the connecting rod (6).

5. A DC coupling capacitor according to claim 1, characterized in that: The flattened washer (601) is movably connected to the upper surface of the cover plate (3), and the nut (602) is movably connected to the upper surface of the flattened washer (601). Both the flattened washer (601) and the nut (602) are rotatably connected to the threaded protrusion at the top of the connecting rod (6).

6. A DC coupling capacitor according to claim 1, characterized in that: The first protective shell (7) is rotatably connected to the lower half of the connecting rod (6), and the second protective shell (8) is rotatably connected to the upper half of the connecting rod (6).

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