CN209896297U

CN209896297U - Power plug and electric equipment

Info

Publication number: CN209896297U
Application number: CN201920487107.1U
Authority: CN
Inventors: 魏伟
Original assignee: Hefei Lianbao Information Technology Co Ltd
Current assignee: Hefei Lianbao Information Technology Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2020-01-03
Anticipated expiration: 2029-04-11

Abstract

The embodiment of the application discloses power plug and consumer. One embodiment of the power plug comprises: a plug body; the plug comprises a plug body, at least two pins, a lead and a connecting wire, wherein the plug body is provided with a plurality of holes; when the power plug contacts with the socket, at least two pins are formed with impedance, and the impedance value decreases with the depth of the contact with the socket. The power plug with the structure can effectively reduce or eliminate the electric pulse interference or the electric spark phenomenon generated in the process of inserting the power plug into the socket by adding the impedance on the pin, thereby improving the adverse effect on electric equipment and a power grid and being beneficial to improving the safety of the power plug.

Description

Power plug and electric equipment

Technical Field

The embodiment of the application relates to the field of electrical technology, in particular to a power plug and electric equipment.

Background

In daily life, when a user inserts a plug of an electric device into a socket to connect a power source, an electric spark phenomenon is generally generated at the moment of insertion. This is a self-inductance phenomenon. The self-inductance is generally present in the circuit, and when the plug is inserted into the socket, the resistance of the power grid and the load circuit changes from infinity to zero instantaneously. The current has the characteristic of being unable to change abruptly, and the current at the moment rises from zero to the working current instantly. According to the formula of the induced electromotive force, a huge induced electromotive force is generated in the insertion process. The induced electromotive force may ionize the surrounding air to generate an ionization path, thereby generating an electric spark phenomenon. Such sparks can present a certain risk to the user.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a power plug and electric equipment.

In a first aspect, an embodiment of the present application provides a power plug, including: a plug body; the plug comprises a plug body, at least two pins, a lead and a connecting wire, wherein the plug body is provided with a plurality of holes; when the power plug contacts with the socket, at least two pins are formed with impedance, and the impedance value decreases with the depth of the contact with the socket.

In some embodiments, the at least two pins are formed with a plurality of resistance regions on a portion of the protruding plug body, and the resistance values of the plurality of resistance regions decrease continuously in the order of contact with the socket.

In some embodiments, the at least two pins are formed with a plurality of resistance regions on a portion of the protruding plug body, and the resistance values of the plurality of resistance regions are stepwise decreased in the order of contact with the socket.

In some embodiments, portions of the at least two pins located in the plurality of resistive regions are made of different materials.

In some embodiments, portions of the at least two pins located in the plurality of resistive regions are formed with resistive coatings of different materials.

In some embodiments, portions of the at least two pins located in the plurality of resistive regions are formed with resistive coatings of different thicknesses of the same material.

In some embodiments, the material of the resistive coating comprises at least one of: an alloy material, a metal oxide, a semiconductor material, a non-metallic material, or a compound.

In some embodiments, the shape of the at least two pins comprises at least one of: cylindrical, semi-cylindrical, or plate-like.

In a second aspect, embodiments of the present application provide an electrical device, where the electrical device is configured with a power plug as described in any one of the embodiments of the first aspect, and the power plug is used to connect the electrical device with a power source.

The power plug and the electric equipment provided by the embodiment of the application can comprise a plug body and at least two pins. At least two pins are arranged on the same end face of the plug body in a protruding mode, and the parts, located inside the plug body, of the at least two pins are electrically connected with the conducting wires respectively. When the power plug contacts with the socket, at least two pins are formed with impedance, and the impedance value decreases with the depth of the contact with the socket. The power plug with the structure can effectively reduce or eliminate the electric pulse interference or the electric spark phenomenon generated in the process of inserting the power plug into the socket by increasing the impedance on the pins. In this way, adverse effects on the consumer and the power grid can be improved, while also contributing to improved safety of the power plug.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of one embodiment of a power plug provided herein;

FIG. 2 is a flow chart of one embodiment of a power plug in contact with a receptacle provided herein;

FIG. 3 is a graph illustrating one embodiment of the current change during contact between a power plug and a receptacle provided herein;

fig. 4 is a graph illustrating a change in current during contact between a power plug and a socket according to yet another embodiment of the present disclosure.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, a schematic structural diagram of an embodiment of a power plug provided in the present application is shown. As shown in fig. 1, the power plug in the present embodiment may include a plug body 11 and at least two pins 12.

In this embodiment, at least two pins 12 may be protrusively provided on the same end surface of the plug body 11. And portions of the at least two pins 12 located inside the plug body 11 may be electrically connected with wires, respectively. It will be appreciated that at least two of the pins 12 are typically made of a conductive material, such as copper metal. In this way, when at least two pins 12 are inserted into the sockets or recesses, a connection to a power source can be achieved.

Here, the shape structure of the plug body 11 and the at least two pins 12 is not limited in the present application. For example, the plug body 11 may have a shape structure as shown in fig. 1, a circular or square structure, or the like. Also, the outer surface of the plug body 11 may be coated with an insulating material (e.g., rubber or plastic) in consideration of safety of a user, thereby preventing the user from getting an electric shock. Also for example, the at least two pins 12 may be plate-shaped as shown in fig. 1. Alternatively, the at least two pins 12 may also be cylindrical and/or semi-cylindrical in shape, etc. Further, the number of pins 12 in the power plug may be two as shown in fig. 1. In some embodiments, the number of pins 12 in the power plug may also be the number of pins (e.g., three) of a plug commonly used in the art.

It is understood that the induced electromotive force is related to the self-inductance, the current and the time, as known from the formula of the induced electromotive force. While the self-inductance is usually fixed. Therefore, to reduce the induced electromotive force, it can be realized by decreasing the current or increasing the time. However, in general, the insertion of the power plug into the outlet is generally accomplished instantaneously, i.e., for a short time. In addition, in the actual use process, the operation action of the user cannot be controlled, so that the time is increased. It follows that the induced electromotive force can be reduced by reducing the current.

As known from the ohm's law for ac circuits, current is related to voltage and resistance. The voltage is generally the operating voltage (e.g., 220 volts) required by the powered device. The current can be reduced by increasing the resistance. That is, impedance is added during the insertion of the power plug into the socket, thereby reducing the induced electromotive force generated.

In this embodiment, the at least two pins 12 may have an impedance formed thereon during the contact of the power plug with the socket. Therefore, the change rate of the current at the moment of contact can be reduced, so that the induced electromotive force is reduced, and the phenomenon of electric spark is avoided or reduced. And the resistance value may decrease with the depth of the power plug in contact with the socket (i.e., the length over which the at least two pins 12 are inserted) until the current becomes the normal transmission value. Thus, the normal power supply requirement can be ensured under the condition that the power plug is completely inserted into the socket.

That is, the abrupt change is prevented from occurring by forming an impedance on at least two pins 12 during the insertion of the power plug into the socket, thereby gradually changing the induced electromotive force generated. Therefore, the electric spark phenomenon can be effectively avoided or reduced, and the safety of a user is ensured. But also helps to reduce the damage to the electric equipment and the adverse effect on the quality of the power grid caused by the insertion moment.

As an example, the at least two pins 12 may be formed with a plurality of resistance regions, such as R0 to R4 resistance regions shown in fig. 1, on a portion of the protruding plug body 11, i.e., a portion for insertion into a receptacle. And the impedance values of the plurality of impedance regions may be sequentially decreased in order of contact with the socket. It should be noted that the process of decreasing the resistance value may be a continuous decrease. That is, as shown in fig. 3, the current I continuously increases with the time T during the insertion of the power plug into the outlet. Or the process of the impedance value reduction may be a stepwise reduction. That is, as shown in fig. 4, during the insertion of the power plug into the outlet, the current I increases stepwise as the time T increases. That is, the change in the resistance value may be a continuous change or an intermittent change. Here, the resistance region may be formed on the at least two pins 12 in various ways.

Referring to fig. 2 a and b, during insertion, the top of the portion of the at least two pins 12 protruding out of the plug body 11 (i.e., the R4 resistive area in fig. 1) first meets the receptacle. Thereafter, referring to fig. 2 c to e, other portions (i.e., R3, R2, R1 resistance regions in fig. 1) of the at least two pins 12 are sequentially connected to the socket. Until the power plug is fully inserted into the socket as shown in f of fig. 2, at which point the portions of the at least two prongs 12 of fig. 1 located in the R0 impedance area meet the socket, thereby delivering a stable power supply.

It can be seen that, as an example, the portions of the at least two pins 12 located in the plurality of resistive regions may be made of different materials. That is, the portions of the at least two pins 12 of fig. 1 located in the R4 to R0 resistance regions may be made of different materials, respectively. And the resistance properties of the materials located in the R4 to R0 resistance regions decrease in order. Here, the manufacturing process of the at least two pins 12 is not limited in the present application, and may be made by casting, for example.

In some embodiments, the portions of the at least two pins 12 located in the plurality of resistive regions may be formed with resistive coatings of different materials. For example, the entirety of at least two pins 12 may be made of a material located at a portion of the R0 resistance region. Coatings of different materials from the material of the R0 resistance region may then be formed at positions corresponding to the R4 through R1 resistance regions, respectively, to produce different resistances. Wherein the resistance properties of the materials of the R4 to R1 resistance regions decrease in order.

Alternatively, portions of the at least two pins 12 located at the plurality of resistance regions may be formed with resistance coatings of different thicknesses of the same material. For example, the entirety of at least two pins 12 may be made of a material located at a portion of the R0 resistance region. Coatings of materials different from the R0 resistance regions may then be formed at positions corresponding to the R4 through R1 resistance regions, respectively. Wherein the coating materials of the R4-R1 resistance areas are the same, but the coating thicknesses are reduced in sequence. For another example, coatings of the same material as the R0 resistance regions may be formed at positions corresponding to the R4 to R1 resistance regions, respectively.

Here, the material of the resistive coating and the fabrication process for forming the resistive coating are also not limited in this application. By way of example, the material of the resistive coating may include (but is not limited to) at least one of: high-resistance alloy materials (such as nickel-chromium alloy, iron-chromium-aluminum alloy and the like), metal oxides (such as iron oxide, ferrite and the like), semiconductor materials (such as silicon, boron, copper oxide and the like), non-metal materials (such as conductive carbide) or compounds (such as weak electrolyte and the like). For example, the resistive coating may be formed by spraying, plating, or etching.

It can be understood that the mode of adopting the impedance coating not only can achieve the effects of reducing the occurrence probability of electric sparks and protecting the safety of users. And the electric pulse generated during insertion can be reduced, and the impact on the power grid and electric equipment is reduced. In addition, the influence on the production process of the conventional power plug can be reduced, and the production cost cannot be greatly increased. And the power plug produced can be modified in this way.

The embodiment of the application also provides the electric equipment. The powered device may be configured with a power plug as described in the above embodiments. The electric equipment can be connected with the power supply through the power plug. Namely, the power supply of the electric equipment can be realized through the power plug. Meanwhile, the power utilization safety of a user using the power utilization equipment can be protected.

It should be noted that the electric device may be various devices requiring power supply. For example, the electronic device can be various electronic devices (such as electronic products like smart phones, tablet computers, notebooks, etc.); or various electrical equipment (such as mechanical equipment such as a fan, a lathe and the like); but also various household appliances, etc.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A power plug, comprising:

a plug body;

the plug comprises a plug body, at least two pins, a lead and a connecting wire, wherein the plug body is provided with a plurality of holes;

when the power plug is in contact with the socket, the at least two pins are provided with impedances, and the impedance value is reduced along with the deep contact with the socket.

2. The power plug as claimed in claim 1, wherein the at least two pins are formed with a plurality of resistance regions on a portion protruding from the plug body, and the resistance values of the plurality of resistance regions are continuously decreased in an order of contact with the socket.

3. The power plug as claimed in claim 1, wherein the at least two pins are formed with a plurality of resistance regions on a portion protruding from the plug body, and the resistance values of the plurality of resistance regions are stepwise decreased in an order of contact with the socket.

4. A power plug as claimed in claim 2 or claim 3, in which the portions of the at least two prongs located in the plurality of impedance regions are made of different materials.

5. A power plug as claimed in claim 2 or claim 3, in which the portions of the at least two pins lying in the plurality of resistive zones are formed with resistive coatings of different materials.

6. A power plug as claimed in claim 2 or claim 3, in which the portions of the at least two pins lying in the plurality of resistive zones are formed with resistive coatings of different thicknesses of the same material.

7. The power plug of claim 5, wherein the material of the impedance coating comprises at least one of: an alloy material, a metal oxide, a semiconductor material, a non-metallic material, or a compound.

8. The power plug of claim 1, wherein the shape of the at least two pins comprises at least one of: cylindrical, semi-cylindrical, or plate-like.

9. An electric consumer, characterized in that the electric consumer is provided with a power plug according to one of claims 1 to 8 for connecting the electric consumer to a power source.