KR20040054994A - Structure of power outlet - Google Patents

Abstract

PURPOSE: A power outlet structure is provided to cut off power when generating overload during a constant time, thereby achieving safety and enhancement of performance. CONSTITUTION: A body(21) forms an entire shape of the power outlet and has a opening(21a) in which its side surface is opened. At the body(21), negative current flows. A positive inside terminal(22) is mounted to the inside center of the body(21). An inside insulator(23) is mounted to the inside side of the body(21) and encapsulates the positive terminal(22) for isolating the body(21) from the positive inside terminal(22) and preventing short. A poly switch(25) is connected to a side of the body(21) and mounted between the body(21) and a negative terminal(24) in order to cut off overcurrent.

Description

Power outlet structure {STRUCTURE OF POWER OUTLET}

The present invention relates to a power outlet structure, and more particularly, to a power outlet structure using an electrically conductive polymer fuse.

In the case of a power outlet used in a conventional vehicle, a type without a built-in fuse 11 as shown in FIG. 1 includes European and some domestic cars, and a main fuse 12 In addition to the built-in fuse (11), Japanese cars belong to this type.

For example, the built-in fuse 11 of a Japanese automobile is disconnected when the power outlet is allowed to reach a rated current of 10 A or more.

The main fuse 12 is usually 20A, which is not used for controlling the power outlet rated current, and is used for disconnecting the wiring 13 when the wiring 13 is shorted to the vehicle body.

However, in the related art, when the user connects an electric device of 10 A or more to the power outlet, the main fuse 12 is disconnected when the electric power is supplied to 20 A or more.

Therefore, the power outlet is usually recommended in the user manual to use only up to 10A, which poses a vehicle safety problem. In the case of Japanese cars, since the built-in fuse 11 is 10A, the built-in disposable fuse is disconnected at the time of connection of an electric device having a capacity of more than that.

In this case, it is necessary to replace all the power outlets or to replace only the fuse. On the other hand, it is common not to supply only fuses to A / S in general.

The present invention was created in order to solve the above problems, and when the overload, the power is cut off and regenerated for a certain time, so that safety and performance can be improved. The purpose is to provide an outlet structure.

1 is a circuit diagram schematically showing a power outlet configuration according to the prior art.

2 is an external perspective view of a power outlet structure according to the present invention;

3 is a cross-sectional view taken along the line A-A in FIG.

Figure 4 is an exploded perspective view exploded in Figure 2;

5 is a cross-sectional view of the poly switch.

6A and 6B show changes in polymer grains of the polyswitch at normal energization and at break-over due to overcurrent.

7 is a view illustrating a state in which an electric device is connected to the power outlet of FIG.

<Description of the symbols for the main parts of the drawings>

20. Power Outlets

21.Body

22. + Internal terminal

23. Internal Insulator

24. -Terminal

25. Poly switch

26.External terminal

27. External insulator

28. + terminal screw

29. Cover

The power outlet structure of the present invention for achieving the above object is provided with an open portion on one side, the body is provided so that current can flow; A + inner terminal mounted at a central side of the body; An inner insulator installed on one side of the body and surrounding the + terminal to prevent shorting by isolating the body and the + terminal; A poly switch connected to one side of the body and acting as a shutoff when overcurrent is energized; A terminal connected to one side of the poly switch and a terminal part provided to supply power; A + external terminal installed at an external side of the body to enable electricity to the + internal terminal to supply power to the + internal terminal; An outer insulator installed between the − terminal and the + external terminal to isolate the + external terminal and supporting the + external terminal; A + terminal screw coupled to the + external terminal to supply + power to the + internal terminal; And a cover coupled to and installed on the opening to close the opening of the body.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an external perspective view of the power outlet structure according to the present invention. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and in FIG. 4, an exploded view of FIG. It is.

Referring to each of these drawings, the power outlet structure according to the present invention, which forms the overall shape of the power outlet 20, one side is provided with an open portion (21a) is open, the body provided so that the current can flow ( 21, the + inner terminal 22 mounted on the central side of the inside of the body 21, and the + inner terminal 22 to isolate the body 21 and the + inner terminal 22 to prevent a short. Is wrapped between the inner insulator 23 installed on one side of the body 21 and connected to one side of the body 21, that is, between the body 21 and the -terminal 24 to be described later, when the overcurrent is energized. A poly switch 25 is provided to serve as a blocking function.

And the power outlet structure according to the present invention, one side is connected to the poly switch 25, the terminal portion is provided so as to supply power to the terminal-24 and the + inner terminal 22 is provided to supply power; It is provided between the + external terminal 26 installed on one side of the body 21 and the -terminal 24 and the + external terminal 26 so as to be electrically energized with the + internal terminal 22 and isolating them. And an external insulator 27 supporting the terminal 26 and a + terminal screw 28 coupled to the + external terminal 26 to supply + power to the + internal terminal 22.

The + terminal screw 28 serves to couple the entire structure of the power outlet 20.

In addition, a cover 29 is provided and coupled to the opening portion 21a to close the opening portion 21a of the body 21 to prevent foreign substances from entering the power outlet 20.

And the + inner terminal 22 is made of a polygon to prevent rotation during assembly, it is made of a nut structure to be assembled with the + terminal screw 28.

In addition, the poly switch 25 is provided with a polymer material 25a in the center, as shown in FIG. 5, and the appearance of the polymer material 25a is made of a steel electrode plate 25b.

In the poly switch 25 configured as described above, as shown in FIG. 6A, the current C is energized through adjacent polymer grains during normal energization. On the other hand, during overcurrent energization, that is, polymer grains (D) are spaced apart when the internal temperature rises, thereby blocking the flow of current.

The poly switch 25 having such characteristics is currently used for overdischarge prevention of nickel batteries.

Referring to the operation of the power outlet structure according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, the power outlet structure according to the present invention, as shown in Figure 7, using a self-recovering poly switch 25 made of an electrically conductive polymer, the user of the overcurrent consumption of more than 10A rating When the electric device 30 is connected to the power outlet 20, the poly switch 25 cuts off power for a predetermined time.

Therefore, after removing the overload electric device 30, regenerate it can be used semi-permanently without replacement parts.

On the other hand, reference numeral 31, which is not described in Figure 7, shows an outlet.

This will be described in more detail.

The current supplied from the + external terminal 26 is supplied to the + internal terminal 22 through the + terminal screw 28. In addition, current flows from the + inner terminal 22 to the − terminal 24 through the electric device, the body 21, and the poly switch 25.

In the course of the current flow through the body 21, the poly switch 25 and the-terminal 24, the current is blocked by the poly switch 25 when the over current exceeds the specified.

As described above, the power outlet structure according to the present invention has the following effects.

Since the power is shut off and regenerated for a certain time during overload, safety and performance can be improved. For example, a soldering process for assembling a built-in fuse is not required, such as a Japanese car.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (2)

An opening having one side open, and a body provided to allow current to flow; A + inner terminal mounted at a central side of the body; An inner insulator installed on one side of the body and surrounding the + terminal to prevent shorting by isolating the body and the + terminal; A poly switch connected to one side of the body and acting as a shutoff when overcurrent is energized; A terminal connected to one side of the poly switch and a terminal part provided to supply power; A + external terminal installed at an external side of the body to enable electricity to the + internal terminal to supply power to the + internal terminal; An outer insulator installed between the − terminal and the + external terminal to isolate them, and supporting the + external terminal; A + terminal screw coupled to the + external terminal to supply + power to the + internal terminal; And a cover coupled to the opening and installed to close the opening of the body. The method of claim 1, The + inner terminal is made of a polygon to prevent rotation during assembly, the power outlet structure, characterized in that made of a nut structure to be assembled with the + terminal screw.