Power supply filtering device convenient to use

Abstract

The utility model relates to the technical field of filters, in particular to a power supply filtering device convenient to use, which comprises a shell, one side of the shell is provided with an input end joint, the input end joint is externally connected with an input lead, the input end joint is a circular connector, the other side of the shell is provided with a plurality of output end joints, and the output end joints are externally connected with output leads. A main circuit board is installed in the shell, a grounding plate is fixed to the upper portion of the main circuit board, and two organic film feed-through filters and two resin sealing screwed filters are installed on the grounding plate. In the power supply filtering device convenient to use, the grounding plate can divide the interior of the shell into two cavities, the main circuit board and the wiring circuit board are separated, signal interference is avoided, crosstalk coupling cannot be formed between signals of the input end connector and the output end connector, the shell is convenient to open through the top cover, and the power supply filtering device is convenient to use. And the grounding plate is also convenient for mounting and dismounting the organic thin film feed-through filter and the resin sealing screw-mounted filter.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a convenient-to-use power supply filter device. Background Art

[0002] A filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter out a specific frequency point in the power line or frequencies other than the frequency point to obtain a power signal with a specific frequency, or eliminate a power signal with a specific frequency.

[0003] In the use of existing filters, signal transmission will be disturbed, and there is no separation between the input and output ends, which easily causes the problem of crosstalk coupling between signals. This will inevitably cause crosstalk problems between multiple signals. At the same time, according to the antenna effect of electromagnetic interference, the back end of the internal connection cable filter will definitely carry a large amount of electromagnetic interference noise, and the installation and disassembly of the internal filter module is not convenient, which is not convenient for maintenance work. Utility Model Content

[0004] The purpose of the utility model is to provide an easy-to-use power supply filtering device to solve the problems raised in the above-mentioned background technology that in the use of existing filters, signal transmission will be disturbed, there is no separation between the input end and the output end, which easily causes crosstalk coupling between signals, and the installation and disassembly of the internal filter module is not convenient, making it inconvenient to carry out maintenance work.

[0005] To achieve the above-mentioned purpose, the utility model provides a convenient power supply filtering device, including a shell, one side of the shell is provided with an input terminal connector, the input terminal connector is externally connected to an input wire, the input terminal connector is a circular connector, the other side of the shell is provided with a plurality of output terminal connectors, the output terminal connectors are externally connected to an output wire, a main circuit board is installed inside the shell, a grounding plate is fixed on the upper part of the main circuit board, two organic thin film through-hole filters and two resin-sealed screw-mounted filters are installed on the grounding plate, and one end of the organic thin film through-hole filter and the two resin-sealed screw-mounted filters are respectively connected to four output terminal connectors.

[0006] Preferably, mounting plates are welded to the bottoms of both sides of the housing, and a plurality of mounting holes are provided on the surface of the mounting plates.

[0007] Preferably, a top cover is mounted on the top of the housing by bolts.

[0008] Preferably, a connector fixing sleeve is installed on one side of the housing close to the input terminal connector, and the circular connector passes through the connector fixing sleeve and is connected to the main circuit board.

[0009] Preferably, a wiring circuit board is installed on the inner wall of the shell near the output terminal connector, one end of the output terminal connector is connected to one side of the wiring circuit board, and one end of the organic film through-hole filter and the resin sealed screw-mounted filter are respectively connected to the other side of the wiring circuit board.

[0010] Preferably, the grounding plate is externally connected to a grounding wire, and the organic film through-hole filter and the resin sealed screw-mounted filter are both tightened and fixed on the grounding plate by nuts.

[0011] Preferably, the output end connector comprises a screw, which passes through the housing and is locked and fixed by a nut, and washers are installed on both the inner and outer walls of the housing near the screw.

[0012] Preferably, the grounding plate is integrally formed and installed inside the housing and is perpendicular to the main circuit board.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In this easy-to-use power supply filtering device, the interior of the shell can be divided into two chambers by the grounding plate arranged therein, and the main circuit board and the wiring circuit board are separated to avoid signal interference and prevent crosstalk coupling between the signals of the input terminal connector and the output terminal connector. The shell can be opened conveniently through the top cover, and the grounding plate also facilitates the installation and removal of the organic film through-hole filter and the resin-sealed screw-mounted filter, which is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the overall structural diagrams of the utility model;

[0016] Figure 2 This is one of the overall structural diagrams of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the circuit principle of the utility model;

[0019] Figure 5 This is a circuit wiring diagram of the utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Outer shell; 11. Mounting plate; 12. Top cover; 13. Connector fixing sleeve; 2. Input terminal connector; 3. Output terminal connector; 4. Main circuit board; 5. Organic film through-hole filter; 6. Resin sealed screw-mounted filter; 7. Grounding plate; 8. Wiring circuit board. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a convenient power supply filter device, such as Figure 1-Figure 5 As shown, it includes a shell 1, an input terminal connector 2 is provided on one side of the shell 1, and the input terminal connector 2 is externally connected to an input wire for accessing an external signal. The input terminal connector 2 is a circular connector, and a plurality of output terminal connectors 3 are provided on the other side of the shell 1, and the output terminal connector 3 is externally connected to an output wire for outputting a signal. A main circuit board 4 is installed inside the shell 1, and a power filter module is installed on the main circuit board 4. The power filter module is a filter circuit composed of a capacitor, an inductor and a resistor, and is used to filter the input power supply. A grounding plate 7 is fixed on the upper part of the main circuit board 4, and two organic thin film through-hole filters 5 and two resin-sealed screw-mounted filters 6 are installed on the grounding plate 7 for signal filtering. One end of the organic thin film through-hole filter 5 and the two resin-sealed screw-mounted filters 6 are respectively connected to the four output terminal connectors 3 for outputting the filtered signal.

[0024] In this embodiment, mounting plates 11 are welded to the bottoms of both sides of the housing 1 , and a plurality of mounting holes are provided on the surface of the mounting plates 11 , so as to facilitate the installation and fixing of the housing 1 .

[0025] Specifically, a top cover 12 is installed on the top of the housing 1 by means of bolts, so as to facilitate opening the top of the housing 1 and installation and removal of internal components.

[0026] Furthermore, a connector fixing sleeve 13 is installed on one side of the housing 1 close to the input terminal connector 2 , and the circular connector passes through the connector fixing sleeve 13 and is connected to the main circuit board 4 , so as to facilitate the installation and positioning of the circular connector.

[0027] Furthermore, a wiring circuit board 8 is installed on the inner wall of the housing 1 near the output terminal connector 3, one end of the output terminal connector 3 is connected to one side of the wiring circuit board 8, and one end of the organic film through-hole filter 5 and the resin sealed screw-mounted filter 6 are respectively connected to the other side of the wiring circuit board 8, and the wiring circuit board 8 is used to connect with the external output terminal connector 3.

[0028] Furthermore, the ground plate 7 is externally connected to a ground wire, and the organic thin film through-hole filter 5 and the resin sealed screw-mounted filter 6 are both fixed to the ground plate 7 by tightening nuts, which facilitates the installation and removal of the organic thin film through-hole filter 5 and the resin sealed screw-mounted filter 6.

[0029] Furthermore, the output terminal connector 3 includes a screw, which passes through the housing 1 and is locked and fixed by a nut. Washers are installed on the inner and outer walls of the housing 1 near the screw to ensure the insulation effect between the housing 1 and the output terminal connector 3.

[0030] Furthermore, the grounding plate 7 is integrally formed and installed inside the housing 1 and is perpendicular to the main circuit board 4, which ensures that the grounding plate 7 will not loosen, improves its strength, and also ensures that the structure of the entire device is compact and reduces space occupancy.

[0031] Finally, it should be noted that the main circuit board 4, organic thin film through-hole filter 5, resin sealed screw-mounted filter 6, ground plate 7, wiring circuit board 8, etc. involved in this embodiment, the electronic components in the above parts are all universal standard parts or parts known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires respectively. The specific connection means should refer to the working order between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in the field.

[0032] When the convenient power supply filtering device of the utility model is used, firstly, the input terminal connector 2 is externally connected to the input wire, the external signal is connected, the input power supply is filtered through the power supply filtering module through the main circuit board 4, and then the signal is filtered through the organic film through-hole filter 5 and two resin-sealed screw-mounted filters 6, and then the signal is transmitted to the output terminal connector 3 for output. The input terminal connector 2 adopts an anti-misinsertion circular connector for input, and the output terminal connector 3 adopts a screw plus nut output, which is suitable for large current output and is easy to install. The grounding protection can be performed through the grounding plate 7, and the separation of the grounding plate 7 can prevent the problem of crosstalk coupling between interference signals. In this way, the coupling phenomenon between different signals can be well suppressed, thereby solving the electromagnetic compatibility in the process of signal transmission between systems. The power supply filtering module on the main circuit board 4 performs low, medium and high frequency filtering on the input power supply, focusing on solving the problems of conducted emission and radiated emission of the power line.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A convenient power supply filter device, comprising a housing (1), characterized in that: An input terminal connector (2) is arranged on one side of the housing (1), and the input terminal connector (2) is externally connected to an input wire. The input terminal connector (2) is a circular connector. A plurality of output terminal connectors (3) are arranged on the other side of the housing (1), and the output terminal connectors (3) are externally connected to an output wire. A main circuit board (4) is installed inside the housing (1), and a grounding plate (7) is fixed on the upper part of the main circuit board (4). Two organic thin film through-hole filters (5) and two resin-sealed screw-mounted filters (6) are installed on the grounding plate (7), and one end of the organic thin film through-hole filters (5) and the two resin-sealed screw-mounted filters (6) are respectively connected to the four output terminal connectors (3).

2. The convenient-to-use power supply filter device according to claim 1, characterized in that: Mounting plates (11) are welded to the bottoms of both sides of the housing (1), and a plurality of mounting holes are provided on the surface of the mounting plates (11).

3. The convenient-to-use power supply filter device according to claim 1, characterized in that: A top cover (12) is mounted on the top of the housing (1) via bolts.

4. The convenient-to-use power supply filter device according to claim 1, characterized in that: A connector fixing sleeve (13) is installed on one side of the housing (1) close to the input terminal connector (2); the circular connector passes through the connector fixing sleeve (13) and is connected to the main circuit board (4).

5. The convenient-to-use power supply filter device according to claim 1, characterized in that: A wiring circuit board (8) is installed on the inner wall of the housing (1) near the output terminal connector (3); one end of the output terminal connector (3) is connected to one side of the wiring circuit board (8); and one end of the organic film through-hole filter (5) and the resin-sealed screw-mounted filter (6) are respectively connected to the other side of the wiring circuit board (8).

6. The convenient-to-use power supply filter device according to claim 1, characterized in that: The grounding plate (7) is externally connected to a grounding wire, and the organic film through-hole filter (5) and the resin-sealed screw-mounted filter (6) are both fixed on the grounding plate (7) by tightening nuts.

7. The convenient-to-use power supply filter device according to claim 1, characterized in that: The output end connector (3) comprises a screw, which passes through the housing (1) and is locked and fixed by a nut, and washers are installed on the inner and outer walls of the housing (1) close to the screw.

8. The convenient-to-use power supply filter device according to claim 1, characterized in that: The grounding plate (7) is integrally formed and installed inside the housing (1) and is perpendicular to the main circuit board (4).

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