Power meter socket extension cord with fuse overload protection

Abstract

The utility model discloses a power meter socket extension cord with a fuse overload protection function. The power meter socket extension cord comprises a switch overload protection unit, an input end plug and a plurality of output end extension sockets, the switch overload protection unit comprises a power meter, an overload protection reset switch, an AC input end and an AC output end; the AC input end is connected with the input end plug to realize power input, and the AC output end is connected with each output end extension socket to realize power output; according to the switch overload protection unit, after the output end extension socket is inserted into a corresponding load electric appliance, a power meter display screen in a power meter can display the latest value current, power and KW / h of a current load and the real-time temperature in the socket in real time, and the temperature generated by the passing current on a component is monitored in real time; and after the output end extension socket is connected with a load, when the power and the current exceed rated values, the overload protection reset switch can be immediately powered off and tripped off, so that an effect of protecting an electric appliance is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power extension cords, and relates to a power meter socket extension cord with insurance overload protection. Background Art

[0002] The progress of technology has brought civilization and convenience, but there are also more and more electrical appliances in people's surrounding life; the energy sources of various electrical appliances are supplied by power companies and transported to power sockets everywhere through cable lines, so that the general public can directly plug electrical appliances into the power sockets to obtain electrical energy. However, the power sockets are set on the wall, with fixed positions and limited numbers. Therefore, in order to enable electrical appliances to obtain electrical energy at the required positions, the general public often uses external power extension cords to extend the sockets to the required positions.

[0003] In the process of using a power extension cord to adjust the position and quantity of sockets, since the power extension cord in the prior art lacks structural devices capable of achieving overload protection, strong current will enter the electrical appliance through the wire during use, breaking down the components of the electrical appliance product. Moreover, if the electrical appliance is aged, the components of the electrical appliance itself will also generate high resistance and high heat, leading to a fire and causing safety accidents. Therefore, how to solve the safety hazards brought by strong current to the power extension cord is an urgent technical problem that needs to be solved by those skilled in the art. Content of the Utility Model

[0004] In order to solve the implementation technical problems, the utility model adopts the following technical solutions:

[0005] A power meter socket extension cord with insurance overload protection, comprising: a switch overload protection unit, an input end plug, and a plurality of output end extension sockets;

[0006] The input end plug is an overload protection plug with a CE fuse tube;

[0007] The switch overload protection unit includes: a power meter, an overload protection reset switch, an AC input end, and an AC output end;

[0008] The AC input end is connected to the input end plug to realize power input, and the AC output end is connected to each output end extension socket to realize power output;

[0009] The power meter is connected to the AC input end to realize power supply input for the power meter. The power meter is connected to the AC output end to realize circuit monitoring work. The power meter is connected to the overload protection reset switch to be able to control the overload protection reset switch. The overload protection reset switch is connected to the AC output end to be able to realize circuit control between the AC input end and the AC output end.

[0010] As a further solution of the present utility model: The power meter includes a measurement chip and a control chip; the measurement chip is connected to the AC input terminal and the AC output terminal;

[0011] The control chip is respectively connected to the measurement chip and the overload protection reset switch.

[0012] As a further solution of the present utility model: The measurement chip uses an electric energy metering chip with the model number BL0940.

[0013] As a further solution of the present utility model: The control chip uses a reset control chip with the model number FT61F143-RB_SOP16.

[0014] As a further solution of the present utility model: The switch overload protection unit further includes a power meter display unit, which includes a power meter display screen and an LCD driver chip;

[0015] The LCD driver chip is connected to the measurement chip and is used to obtain the circuit information in the power meter in real time; the LCD driver chip is connected to the power meter display screen and drives it to realize the display work of the circuit information.

[0016] As a further solution of the present utility model: The LCD driver chip selects a driver chip with the model number HT1621B_48.

[0017] As a further solution of the present utility model: Output LED lights corresponding one by one to the output terminal extension sockets are provided on the switch overload protection unit.

[0018] As a further solution of the present utility model: A number of USB 5V charging modules are also provided on the switch overload protection unit; the USB 5V charging modules are connected to the AC output terminal to realize the function of the charging modules.

[0019] As a further solution of the present utility model: The USB 5V charging module includes a USB power supply LED light for displaying the power supply state of the USB 5V charging module.

[0020] The beneficial effects of the present utility model: When a corresponding load electrical appliance is inserted into the output terminal extension socket by the switch overload protection unit, the power meter display screen in the power meter will display the latest values of current, power, KW / h of the current load, and the real-time temperature inside the socket in real time, and instantaneously monitor the temperature generated by the passing current on the components; and when the power and current exceed the rated values after the output terminal extension socket is connected to the load, the overload protection reset switch will instantaneously cut off the power and trip, playing a role in protecting the electrical appliance;

[0021] When a large current is generated instantaneously at the external input end through the CE fuse in the input plug; for example, when the mains power is unstable, power comes back suddenly after a power outage, or a strong instantaneous current is generated during a thunderstorm, the CE plug fuse at the input end plays the role of fusing the fuse; preventing the strong current from entering the electrical appliance through the wire and breaking down the components of the electrical appliance product, thereby protecting the safety of the electrical appliance. The input overload protection with a fuse and the reset switch overload protection unit achieve double-path protection for input and output. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present utility model.

[0023] Figure 2 is another schematic structural diagram of the present utility model.

[0024] Figure 3 is a schematic circuit diagram of the power meter in the present utility model.

[0025] Figure 4 is a schematic circuit diagram of the display unit of the power meter in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. It should be understood that the present application is not limited by the exemplary embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0029] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] The present utility model provides. Please refer to Figures 1 to 4 , in the embodiments of the present utility model, a power meter socket extension cord with insurance overload protection is mainly applied to household users, as well as the power hour statistics of outdoor mobile appliances, and is used for household appliances with a power not greater than 2500W, kitchen appliances, USB 5V mobile phone charging, extension of power strips, when there are not enough single wall socket holes, an extended multi-hole socket, the use of computer peripheral products, etc. The application range is relatively wide;

[0031] It includes: a switch overload protection unit 2, an input end plug 1, and several output end extension sockets 3;

[0032] The input end plug 1 is an overload protection plug with a CE fuse tube;

[0033] The switch overload protection unit 2 includes: a power meter, an overload protection reset switch 21, an AC input end, and an AC output end;

[0034] The AC input end is connected to the input end plug 1 to realize power input, and the AC output end is connected to each output end extension socket 3 to realize power output;

[0035] The power meter is connected to the AC input end to realize power supply input for the power meter. The power meter is connected to the AC output end to realize circuit monitoring work; the power meter is connected to the overload protection reset switch 21, which can realize the control of the overload protection reset switch 21. The overload protection reset switch 21 is connected to the AC output end, which can realize the circuit control between the AC input end and the AC output end.

[0036] The power meter includes: a measurement chip U2 and a control chip U3; the measurement chip U2 is connected to the AC input end and the AC output end to realize input power supply and real-time monitoring of the circuit;

[0037] The control chip U3 is respectively connected to the measurement chip U2 and the overload protection reset switch 21, and can control the overload protection reset switch 21 in real time according to the information in the circuit.

[0038] The switch overload protection unit 2 further includes a power meter display unit, which includes: a power meter display screen 22 and an LCD driver chip U1;

[0039] The LCD driver chip U1 is connected to the measurement chip U2 and is used to obtain the circuit information in the power meter in real time; the LCD driver chip U1 is connected to the power meter display screen 22 to drive it to display the circuit information.

[0040] During specific implementation, the input end plug 1 is inserted into an existing ACV socket to achieve power connection. After being powered on through the fuse overload protection, the current enters the switch overload protection unit 2, and the measurement chip U2 is powered on to complete self-checking;

[0041] The power meter display screen 22 displays the current initial values: voltage, current, power, KW / h, and the current temperature inside the main board and the socket; when the output end extension socket 3 is inserted into the corresponding load electrical appliance, the power meter display screen 22 in the power meter will display the latest values of the current load, current, power, KW / h, and the real-time temperature inside the socket in real time, and monitor the temperature generated by the passing current on the components immediately;

[0042] When the output end extension socket 3 is connected to a load and the power and current exceed the rated values, the control chip U3 will control the overload protection reset switch 21 to immediately cut off the power and trip, playing a role in protecting the electrical appliance;

[0043] When a large current is generated instantaneously at the external AC input end, the CE fuse in the input end plug 1 will play the role of a fuse at this time; and if there is no fuse overload protection at the plug end, the strong current will enter the electrical appliance through the wire, which will break down the components of the electrical appliance product. If the electrical appliance is aging, it will also cause the components of the electrical appliance itself to generate high resistance and high heat, leading to a fire. When there is a sudden power-on after a power outage or a strong current generated by lightning at the AC input end, it will directly break down the fuse of the input end plug 1, thus protecting the safety of the electrical appliance.

[0044] Preferably, the measurement chip U2 uses an electric energy metering chip with the model number BL0940, which can measure parameters such as the effective values of current and voltage, active power, and active electrical energy.

[0045] Preferably, the control chip U3 uses a reset control chip U3 with the model number FT61F143-RB_SOP16, which can control the overload protection reset switch 21 according to the circuit parameters obtained from the measurement chip U2.

[0046] Furthermore, several USB 5V charging modules 27 are also provided on the switch overload protection unit 2; the USB 5V charging modules 27 are connected to the AC output end to achieve the function of the charging module.

[0047] Further, the USB 5V charging module 27 includes a USB power supply LED lamp 25 for displaying the power supply status of the USB 5V charging module 27. When the power is connected, the USB power supply LED lamp 25 lights up, indicating that the USB 5V charging module 27 is supplying power normally.

[0048] Further, the switch overload protection unit 2 is provided with output LED lamps 23 corresponding one by one to the output terminal extension sockets 3. The output LED lamps 23 are connected to the output circuits of the respective output terminal extension sockets 3. When the power is connected, the input LED lamp lights up, indicating that the AC output terminal is supplying power normally.

[0049] Further, the switch overload protection unit 2 is integrated with a power meter display switch button 26 for realizing the on / off control of the power meter display screen 22.

[0050] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power meter socket extension cord with insurance overload protection, characterized in that, Including: A switch overload protection unit, an input end plug, and several output end extension sockets; The input end plug is an overload protection plug with a CE fuse tube; The switch overload protection unit includes: a power meter, an overload protection reset switch, an AC input end, and an AC output end; The AC input end is connected to the input end plug to achieve power input, and the AC output end is connected to each output end extension socket to achieve power output; The power meter is connected to the AC input end to supply power to the power meter, and the power meter is connected to the AC output end to monitor the circuit; the power meter is connected to the overload protection reset switch to control the overload protection reset switch, and the overload protection reset switch is connected to the AC output end to control the circuit between the AC input end and the AC output end.

2. The power meter socket extension cord with insurance overload protection according to claim 1, characterized in that, The power meter includes: a measurement chip and a control chip; the measurement chip is connected to the AC input end and the AC output end; The control chip is respectively connected to the measurement chip and the overload protection reset switch.

3. The power meter socket extension cord with insurance overload protection according to claim 2, characterized in that, The measurement chip uses an electric energy metering chip with the model number BL0940.

4. A power meter socket extension cord with insurance overload protection according to claim 2, characterized in that, The control chip uses a reset control chip with the model number FT61F143-RB_SOP16.

5. The power meter socket extension cord with insurance overload protection according to claim 1, characterized in that, The switch overload protection unit also includes a power meter display unit, which includes: a power meter display screen and an LCD driver chip; The LCD driver chip is connected to the measurement chip to obtain the circuit information in the power meter in real time; the LCD driver chip is connected to the power meter display screen to drive it to display the circuit information.

6. The power meter socket extension cord with insurance overload protection according to claim 1, characterized in that The LCD driver chip selects a driver chip with the model number HT1621B_48.

7. A power meter socket extension cord with insurance overload protection according to claim 1, characterized in that, Output LED lights corresponding one by one to the output end extension sockets are arranged on the switch overload protection unit.

8. A power meter socket extension cord with insurance overload protection according to claim 1, characterized in that, Several USB 5V charging modules are also arranged on the switch overload protection unit; the USB 5V charging modules are connected to the AC output end to achieve the functions of the charging modules.

9. The power meter socket extension cord with insurance overload protection according to claim 8, characterized in that, The USB 5V charging module includes a USB power supply LED light for displaying the power supply status of the USB 5V charging module.

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