Simple filtering device of power socket

Abstract

The utility model discloses a simple filtering device for a power socket, which relates to the technical field of power socket filtering and comprises a power socket, a filter shell and a mounting rack, the power socket is fixedly connected to the inner side wall of the mounting rack, and the rear end of the mounting rack is fixedly connected with the front end of the filter shell. A storage groove is formed in the upper side of the front end of the power socket, a plug is installed in the storage groove, a feed-through capacitor is arranged on the rear side in the filter shell, the other end of the feed-through capacitor extends out of the left side wall of the filter shell, the surface of the feed-through capacitor is in threaded connection with a fastening nut, and a gasket is arranged on the right side of the fastening nut. According to the device, high-frequency coupling is eliminated through the feed-through capacitors, signals are filtered in a direct connection mode, signal isolation and attenuation are carried out through an electric field or a magnetic field between the two co-arranged capacitors or inductors, electromagnetic waves are shielded again in cooperation with the filter shell, the problem of harmonic interference is effectively prevented / solved, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of power socket filtering, in particular to a simple filtering device for a power socket. Background Art

[0002] The power filter is an electrical device that effectively filters out the frequency point of a specific frequency in the power line or the frequency outside the frequency point. The power filter isolation socket uses filtering isolation technology to obtain a power signal of a specific frequency or eliminate the power signal after a specific frequency by connecting the power filter in the power line, thereby enhancing the interference of the electromagnetic signal during the power signal transmission, thereby avoiding electromagnetic leakage and having high confidentiality.

[0003] The existing power socket filter device uses a copper column to support the mounting plate, the through-hole capacitor is locked on the mounting plate, the solder joint is exposed and connected to the power socket, the structure is complicated, the installation is inconvenient, the testing time cost and labor cost are increased, and the shielding effect is unstable. Based on this, this scheme provides a simple power socket filter device to solve the above-mentioned problems. Utility Model Content

[0004] In order to solve the above technical problems, a simple filtering device for a power socket is provided. The technical solution solves the problem that the existing power socket filtering device proposed in the above background technology uses a copper column to support the mounting plate, the through-hole capacitor is locked on the mounting plate, the solder foot tin point joint is exposed and connected to the power socket, the structure is complicated, the installation is inconvenient, the testing time cost and labor cost are increased, and the shielding effect is unstable.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A simple filtering device for a power socket comprises a power socket, a filter housing and a mounting frame, wherein the power socket is fixedly connected to the inner wall of the mounting frame, the rear end of the mounting frame is fixedly connected to the front end of the filter housing, the rear end of the power socket is arranged inside the filter housing, a storage groove is provided on the upper side of the front end of the power socket, a plug is installed inside the storage groove, a through-hole capacitor is arranged on the inner rear side of the filter housing, the other end of the through-hole capacitor extends out of the left side wall of the filter housing and a fastening nut is threadedly connected to the surface, a gasket is arranged on the right side of the fastening nut, and the gasket is sleeved on the surface of the through-hole capacitor.

[0007] Preferably, the other end of the plug is electrically connected to a power cord, and the other end of the power cord is fixedly connected to a through-hole capacitor by welding or crimping.

[0008] Preferably, a warning sign is provided at the lower side of the front end of the power socket, and an indicator light is provided at the upper side of the warning sign, and the indicator light is electrically connected to the power cord.

[0009] Preferably, mounting holes are provided on both left and right sides of the front end of the mounting frame.

[0010] Preferably, a pair of the through-hole capacitors are provided, and the two through-hole capacitors are symmetrically arranged inside the filter housing.

[0011] Preferably, the plug is a national standard three-wire plug.

[0012] Compared with the prior art, the utility model provides a simple filtering device for a power socket, which has the following beneficial effects:

[0013] 1. In the utility model, high-frequency coupling is eliminated by a through-hole capacitor, the signal is filtered by a direct connection (feed-through), and the electric field or magnetic field between two co-located capacitors or inductors is used to isolate and attenuate the signal. The filter housing is used to shield electromagnetic waves again, effectively preventing / solving the problem of harmonic interference. The utility model has a simple and compact structure, high cost performance, and is easy to install, making it easy to maintain, efficient in testing, and easy to promote.

[0014] 2. The utility model is provided with a storage groove for storing the plug to prevent the surface of the plug from being contaminated by dust. Excessive dust and impurities will form an insulating layer on the surface of the plug, hindering the flow of current and causing poor contact, thereby affecting the normal operation of the device. In extreme cases, the device may even be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the main view of the overall structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the through-hole capacitor in the utility model.

[0018] The numbers in the figure are:

[0019] 1. Power socket; 101. Storage slot; 2. Filter housing; 3. Mounting frame; 301. Mounting hole; 4. Plug; 5. Warning sign; 6. Through-hole capacitor; 7. Fastening nut; 8. Gasket; 9. Indicator light. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] Reference Figure 1-3As shown, a simple filtering device for a power socket includes a power socket 1, a filter housing 2 and a mounting frame 3. The power socket 1 is fixedly connected to the inner wall of the mounting frame 3, the rear end of the mounting frame 3 is fixedly connected to the front end of the filter housing 2, the rear end of the power socket 1 is arranged inside the filter housing 2, and a storage groove 101 is provided on the upper side of the front end of the power socket 1. A plug 4 is installed inside the storage groove 101. The plug 4 of the device is arranged in the storage groove 101 for protection to prevent the surface of the plug 4 from being contaminated with dust. Excessive dust and impurities will form an insulating layer on the surface of the plug 4, hindering the flow of current, causing poor contact, and further affecting the normal operation of the device. In extreme cases, the device may even be damaged. A through-hole capacitor 6 is arranged on the inner rear side of the filter housing 2, the other end of the through-hole capacitor 6 extends out of the left side wall of the filter housing 2 and is threadedly connected to a fastening nut 7 on the surface, and a gasket 8 is arranged on the right side of the fastening nut 7, and the gasket 8 is sleeved on the surface of the through-hole capacitor 6. The device eliminates high-frequency coupling through the through-hole capacitor 6, filters the signal by direct connection (feed-through), utilizes the electric field or magnetic field between two co-located capacitors or inductors to isolate and attenuate the signal, and cooperates with the filter housing 2 to shield the electromagnetic wave again, effectively preventing / solving the harmonic interference problem, and has a simple and compact structure, high cost performance, and easy installation, which makes maintenance convenient, the test efficiency high, and easy to promote.

[0022] Specifically, in this embodiment, the other end of the plug 4 is electrically connected to a power cord, and the other end of the power cord is fixedly connected to a through-hole capacitor 6 by welding or crimping. The through-hole capacitor 6 is usually used as one of the filtering elements to filter high-frequency noise and interference in the power supply. The through-hole capacitor 6 is connected to one end of the power cord by welding or crimping, and the other end of the power cord is connected to the plug 4. The plug 4 connects the power supply to the electronic device through the cable therein. In this way, when the power plug 4 is inserted into the power socket 1, the through-hole capacitor 6 is located between the power cord and the electronic device, playing a filtering role, helping to reduce noise and interference in the power supply.

[0023] Specifically, in this embodiment, a warning mark 5 is provided at the lower side of the front end of the power socket 1, and an indicator light 9 is provided at the upper side of the warning mark 5. The indicator light 9 is electrically connected to the power line. The indicator light 9 is used to display whether the power supply is normal, which is convenient for workers to identify.

[0024] Specifically, in this embodiment, mounting holes 301 are provided on both left and right sides of the front end of the mounting frame 3 .

[0025] Specifically, in this embodiment, a pair of through-hole capacitors 6 are provided, and the two through-hole capacitors 6 are symmetrically arranged inside the filter housing 2. The power line signal is isolated and attenuated by the electric field or magnetic field between the two symmetrically arranged co-located through-hole capacitors 6, and the electromagnetic wave is shielded again in cooperation with the filter housing 2, thereby effectively preventing / solving the harmonic interference problem.

[0026] Specifically, in this embodiment, the plug 4 uses a national standard three-wire plug.

[0027] The working principle of the utility model is: the device connects a through-hole capacitor 6 to one end of a power line by welding or crimping, and the other end of the power line is connected to a plug 4, and the plug 4 connects the power supply to the electronic device through the cable therein, so that when the power plug 4 is inserted into the power socket 1, the through-hole capacitor 6 is located between the power line and the electronic device, and plays a filtering role, that is, high-frequency coupling is eliminated by utilizing the through-hole capacitor 6, and the signal is filtered by directly connecting (feed-through), and the electric field or magnetic field between two symmetrically arranged co-located capacitors or inductors is utilized to isolate and attenuate the signal, and the filter housing 2 is used to shield the electromagnetic wave again, so as to effectively prevent / solve the problem of harmonic interference, and the structure is simple and compact, cost-effective, easy to install, easy to maintain, high testing efficiency, and easy to promote.

[0028] 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 the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A simple filtering device for a power socket, characterized in that: The invention comprises a power socket (1), a filter housing (2) and a mounting frame (3), wherein the power socket (1) is fixedly connected to the inner side wall of the mounting frame (3), the rear end of the mounting frame (3) is fixedly connected to the front end of the filter housing (2), the rear end of the power socket (1) is arranged inside the filter housing (2), a storage groove (101) is provided on the upper side of the front end of the power socket (1), a plug (4) is installed inside the storage groove (101), a through-hole capacitor (6) is arranged on the rear side of the inside of the filter housing (2), the other end of the through-hole capacitor (6) extends out of the left side wall of the filter housing (2) and a fastening nut (7) is threadedly connected to the surface, a gasket (8) is arranged on the right side of the fastening nut (7), and the gasket (8) is sleeved on the surface of the through-hole capacitor (6).

2. A simple filter device for a power socket according to claim 1, characterized in that: The other end of the plug (4) is electrically connected to a power line, and the other end of the power line is fixedly connected to a through-hole capacitor (6) by welding or crimping.

3. A simple filter device for a power socket according to claim 1, characterized in that: A warning mark (5) is arranged on the lower side of the front end of the power socket (1), and a fuse icon is arranged on the upper side of the warning mark (5).

4. A simple filter device for a power socket according to claim 1, characterized in that: The front end of the mounting frame (3) is provided with mounting holes (301) on both left and right sides.

5. A simple filter device for a power socket according to claim 1, characterized in that: A pair of the through-hole capacitors (6) are provided, and the two through-hole capacitors (6) are symmetrically arranged inside the filter housing (2).

6. A simple filter device for a power socket according to claim 1, characterized in that: The plug (4) is a national standard three-wire plug.

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