CN218215987U - Lightning protection extension socket - Google Patents

Abstract

The utility model provides a lightning protection row inserts, include the lightning protection circuit and be used for external DC output socket module by battery charging outfit, lightning protection circuit connection is between AC input and DC output socket module, the lightning protection circuit includes fuse F3 and piezo-resistor RV2, connect between live wire and zero line after fuse F3 and piezo-resistor RV2 establish ties, DC output socket module is including the input rectification filter circuit who connects gradually, transformer circuit, output synchronous rectifier circuit, output filter circuit, agreement IC control circuit and Type-Cl output, optocoupler feedback circuit and PWM circuit have connected gradually between output synchronous rectifier circuit and the output filter circuit, the output of PWM circuit is connected between input rectification filter circuit and transformer circuit, it steps down regulating circuit and USBA output to connect gradually between output filter circuit and the agreement IC control circuit. This lightning protection row inserts and can guarantee that DC output socket module avoids the destruction of unusual instantaneous overvoltage to improve the factor of safety that lightning protection row inserted.

Description

Lightning protection extension socket

Technical Field

The utility model relates to a arrange and insert technical field, concretely relates to lightning protection row inserts.

Background

Lightning protection refers to a protection technology for preventing an object or internal equipment thereof from being damaged by direct lightning or electromagnetic pulses of lightning by forming an integrated system mode of intercepting, dredging and finally discharging the direct lightning into the ground. In the prior art, a protection circuit, such as a lightning protection circuit, is usually connected between an ac input terminal and a rear circuit (such as a switching circuit) to prevent components in the rear circuit from being damaged by lightning and being unable to be used normally. The lightning protection circuit is a key circuit of a power input protection port, the circuit can play a role in protecting a rear-stage power conversion device, and the lightning protection circuit is almost matched in all secondary power supplies and primary power supplies. However, the existing lightning protection circuit basically has the following problems:

1. the lightning protection grade is low, the product is easy to damage, and high potential safety hazard exists;

2. the lightning protection circuit is complicated and high in cost.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a lightning protection row inserts to solve the problem that current lightning protection circuit exists with high costs, the circuit is loaded down with trivial details, the lightning protection grade is lower, the product damages easily and factor of safety is not high.

The technical scheme of the utility model:

the utility model provides a lightning protection row inserts, include the lightning protection circuit and be used for external DC output socket module by battery charging outfit, lightning protection circuit connection is between AC input and DC output socket module, the lightning protection circuit includes fuse F3 and piezo-resistor RV2, connect between live wire and zero line after fuse F3 and piezo-resistor RV2 establish ties, DC output socket module is including the input rectification filter circuit who connects gradually, transformer circuit, output synchronous rectifier circuit, output filter circuit, agreement IC control circuit and Type-Cl output, optocoupler feedback circuit and PWM circuit have connected gradually between output synchronous rectifier circuit and the output filter circuit, the output of PWM circuit is connected between input rectification filter circuit and transformer circuit, step-down regulating circuit and USBA output have connected gradually between output filter circuit and the agreement IC control circuit, agreement IC control circuit's output is connected between step-down regulating circuit and USBA output.

Further, the device comprises an AC output socket module connected with the AC input end for plugging a plug of an electric appliance.

Further, the AC output outlet module includes two-hole outlets and/or three-hole outlets for receiving different types of plugs.

Further, including drain pan and face-piece, the face-piece detachably installs on the drain pan, forms the installation cavity between drain pan and the face-piece for install lightning protection circuit and DC output socket module.

Further, the power switch is used for controlling the on-off of the power supply and is arranged at the AC input end.

Furthermore, a power indicator lamp is arranged on the power switch.

Furthermore, a sucker is arranged on the bottom shell to enable the lightning protection extension socket to be adsorbed on a preset surface.

Further, still including connecting in lightning protection circuit's power cord, connecting in the plug on the power cord, rotate the wire reel of connecting on the drain pan and install the card line seat on the drain pan, through rotatory wire reel with the power cord around locating on the wire reel, the power cord joint that is close to the plug rotates in order to restrict the wire reel on the card line seat.

The utility model has the advantages that:

the utility model provides a lightning protection extension socket, when DC output socket module normally worked, piezo-resistor RV2 was in the high resistance state, did not influence the circuit and normally worked; when the circuit appears unusual instantaneous high voltage and reaches its turn-on voltage, piezo-resistor RV2 can become the low resistance state by the high resistance state rapidly to discharge the instantaneous overcurrent that leads to by unusual instantaneous high voltage with fuse F3 together, clamp unusual transient overvoltage within a safe level simultaneously, thereby guarantee that DC output socket module avoids the destruction of unusual instantaneous overvoltage, avoid pegging graft in the lightning protection row and insert the electrical apparatus that is influenced by the thunder and lightning, thereby improve the factor of safety that the lightning protection row inserted.

The preferred embodiments of the present invention and their advantageous effects will be described in further detail with reference to specific embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic connection diagram of a lightning protection circuit of the lightning protection extension socket of the present invention;

FIG. 2 is a schematic diagram of a circuit frame of the lightning protection extension socket of the present invention;

fig. 3 is a schematic diagram of a detailed circuit structure of the lightning protection extension socket of the present invention.

The reference numbers illustrate: the lightning protection circuit 1, the DC output socket module 2, the input rectifying and filtering circuit 21, the transformer circuit 22, the output synchronous rectifying circuit 23, the output filtering circuit 24, the protocol IC control circuit 25, the Type-Cl output 26, the optical coupling feedback circuit 27, the PWM circuit 28, the voltage reduction regulating circuit 29, the USBA output 20 and the AC output socket module 3.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Please refer to fig. 1 to 3, the utility model provides a lightning protection extension socket, include lightning protection circuit 1 and be used for external by battery charging outfit's DC output socket module 2, lightning protection circuit 1 is connected between AC input and DC output socket module 2, and lightning protection circuit 1 includes fuse F3 and piezo-resistor RV2, connects between live wire and zero line after fuse F3 and piezo-resistor RV2 establish ties.

The utility model provides a lightning protection extension socket, when DC output socket module 2 normally worked, piezo-resistor RV2 was in the high resistance state, did not influence the circuit and normally worked; when unusual instantaneous high voltage appears in the circuit and reaches its turn-on voltage, piezo-resistor RV2 can become the low resistance state by the high resistance state rapidly to discharge the instantaneous overcurrent that leads to by unusual instantaneous high voltage with fuse F3 together, clamp unusual transient overvoltage simultaneously within a safe level, thereby guarantee DC output socket module 2 and avoid the destruction of unusual instantaneous overvoltage, avoid pegging graft and arrange the electrical apparatus of inserting in the lightning protection and receive the influence of thunder and lightning, thereby improve the factor of safety that the lightning protection was arranged and is inserted.

In this embodiment, the DC output socket module 2 includes an input rectifying and filtering circuit 21, a transformer circuit 22, an output synchronous rectifying circuit 23, an output filtering circuit 24, a protocol IC control circuit 25 and a Type-Cl output 26 that are connected in sequence, an optical coupler feedback circuit 27 and a PWM circuit 28 are connected in sequence between the output synchronous rectifying circuit 23 and the output filtering circuit 24, the output synchronous rectifying circuit 23 is connected with the optical coupler feedback circuit 27 to form energy conversion, and the conversion efficiency is improved. The output end of the PWM circuit 28 is connected between the input rectifying and filtering circuit 21 and the transformer circuit 22, and the transformer circuit 22 realizes energy transfer by control and regulation with the PWM circuit 28. The output filter circuit 24 and the protocol IC control circuit 25 are sequentially connected with a buck regulation circuit 29 and an USBA output 20, the output end of the protocol IC control circuit 25 is connected between the buck regulation circuit 29 and the USBA output 20, and the protocol IC control circuit 25 intelligently connects the Type-Cl output 26 and the USBA output 20 according to the requirements of the charging equipment to realize power distribution, so that the aim of quick charging is fulfilled. In particular, the respective detailed circuit connection relationship of the DC output jack module 2 can be seen from fig. 3, and is not described in detail here. It is to be understood that the DC output socket module 2 is not limited to the above-described circuit configuration as long as a module that converts high-voltage alternating current into low-voltage direct current for charging the charging device can be realized.

In this embodiment, the lightning protection extension socket further includes an AC output socket module 3 connected to the AC input terminal for plugging a plug of the household electrical appliance. The AC output jack module 3 includes two-hole jacks and/or three-hole jacks for plugging different types of plugs.

In this embodiment, the lightning protection extension socket further includes a bottom shell and a face shell, the face shell is detachably mounted on the bottom shell, and a mounting cavity is formed between the bottom shell and the face shell for mounting the lightning protection circuit 1, the DC output socket module 2 and the AC output socket module 3. Two-hole sockets and/or three-hole sockets are arranged on the face shell. The lightning protection extension socket also comprises a power switch used for controlling the on-off of the power supply, the power switch is arranged at the AC input end, and the power switch is positioned on the face shell. In order to facilitate the observation of whether the power is on or not, a power indicator lamp is arranged on the power switch. In order to be convenient to install on the predetermined surface, the bottom shell is provided with a sucker, and the lightning protection extension socket is adsorbed on the predetermined surface through the sucker. Lightning protection row inserts still including connecting in lightning protection circuit 1's power cord, connecting in the plug on the power cord, rotate the wire reel of connecting on the drain pan and install the card line seat on the drain pan, through rotatory wire reel with the power cord around locating on the wire reel, the power cord joint that is close to the plug rotates with the restriction wire reel on the card line seat.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying importance; the words "bottom" and "top", "inner" and "outer" refer to directions toward and away from, respectively, a particular component geometry.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. The utility model provides a lightning protection row inserts, a serial communication port, including lightning protection circuit (1) and be used for external DC output socket module (2) by battery charging outfit, lightning protection circuit (1) is connected between AC input end and DC output socket module (2), lightning protection circuit (1) includes fuse F3 and piezo-resistor RV2, connect between live wire and zero line after fuse F3 and piezo-resistor RV2 establish ties, DC output socket module (2) is including the input rectification filter circuit (21) that connects gradually, transformer circuit (22), output synchronous rectifier circuit (23), output filter circuit (24), agreement IC control circuit (25) and Type-Cl output (26), be connected with opto-coupler feedback circuit (27) and PWM circuit (28) between output synchronous rectifier circuit (23) and output filter circuit (24) in proper order, the output of PWM circuit (28) is connected between input rectification filter circuit (21) and transformer circuit (22), be connected with step-down regulating circuit (29) and USBA output (20) between output of agreement IC control circuit (25) in proper order, USBA (25) and step-down regulation circuit (20).

2. The lightning protection extension socket according to claim 1, comprising an AC output outlet module (3) connected to an AC input for plugging a plug of an electrical appliance.

3. The lightning protection extension socket according to claim 2, wherein the AC output jack module (3) comprises two-hole jacks and/or three-hole jacks for plugging different types of plugs.

4. The lightning protection extension socket according to claim 1 comprises a bottom shell and a front shell, wherein the front shell is detachably mounted on the bottom shell, and a mounting cavity is formed between the bottom shell and the front shell for mounting the lightning protection circuit (1) and the DC output socket module (2).

5. The lightning protection extension socket according to claim 1, comprising a power switch for controlling the on/off of power, wherein the power switch is disposed at the AC input terminal.

6. The lightning protection extension socket according to claim 5, wherein a power indicator is provided on the power switch.

7. The lightning protection extension socket according to claim 4, wherein a suction cup is disposed on the bottom shell to attach the lightning protection extension socket to a predetermined surface.

8. The lightning protection extension socket of claim 4 further comprises a power cord connected to the lightning protection circuit (1), a plug connected to the power cord, a wire spool rotatably connected to the bottom shell, and a wire clamping seat mounted on the bottom shell, wherein the power cord is wound on the wire spool by rotating the wire spool, and the power cord close to the plug is clamped on the wire clamping seat to limit the rotation of the wire spool.

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