KR102125248B1 - Power plug with tracking preventing tracking - Google Patents

Abstract

The present invention relates to a power plug for preventing the tracking phenomenon, and more specifically, when the plug is inserted into the outlet, in order to prevent the tracking phenomenon caused by moisture or dust present around the outlet, the plug to have fire resistance and heat resistance It is made to expose the heat-resistant reinforcing body on the front part of the product, and the resin is hardened on the front surface of the flange part of the reinforcing body to prevent the tracking phenomenon that can improve the design and product completeness as the reinforcing body is coupled to the housing. It is about the power plug.

Description

Power plug to prevent tracking phenomenon {POWER PLUG WITH TRACKING PREVENTING TRACKING}

The present invention relates to a power plug for preventing the tracking phenomenon, and more specifically, when the plug is inserted into the outlet, in order to prevent the tracking phenomenon caused by moisture or dust present around the outlet, the plug to have fire resistance and heat resistance It is made to expose the heat-resistant reinforcing body on the front part of the product, and the resin is hardened on the front surface of the flange part of the reinforcing body to prevent the tracking phenomenon that can improve the design and product completeness as the reinforcing body is coupled to the housing. It is about the power plug.

In general, each of electrical devices such as TVs, computers, air conditioners, electronic appliances, production equipment, and the like, includes a power plug inserted into a power outlet for electrical connection. It is connected to an outlet and is used to insert it into an outlet, etc. by attaching it to the end of the power cord as a plug plug for introducing power to the device. Such a power plug is usually composed of a pair of connecting pins to which a power cord line is connected, an inner fixing body for fixing the connecting pins, and a housing formed on the outside.

In this case, when an electric device is used, it is most often used with the power plug inserted in the power outlet for a long period of time, and even if it is not, dust or other foreign matter may generally accumulate in the power outlet. In this case, moisture in the air is included in the dust accumulated between the power plug and the outlet, and when a circuit is formed and a short circuit occurs due to moisture and dust, micro discharge is caused between the connecting pins of the power plug, and this discharge repeatedly occurs. Dust, etc. are carbonized (graphite is generated). Electricity flows in the carbonized dust or the like, causing contact failure with the power plug, and at the same time, the temperature of the dust or the like formed between the connecting pins rises, and in some cases, there is a fear that the fire may spread. In other words, the formation of graphite by spark sparks (carbonization of the product surface) creates a conductive path and ignites while continuously reacting, and is called tracking. In general, the power plug has a countermeasure against this tracking phenomenon. Since it was not prepared, there was a problem that the danger always existed.

In particular, in addition to the ignition problem caused by the tracking phenomenon, the additional fire caused by this may be more problematic. That is, the inner fixture or the housing is mainly made of a plastic material such as nylon 6 or nylon 66, which has a low melting point in case of fire, so that rapid ignition proceeds, and the inside of the connection pin is fixed when the temperature rises due to the initial fire. As the fixture or the housing is easily melted, the gripping state of the pair of connecting pins located on both sides becomes unstable, and as a result, the connecting pins flow and come into contact with each other, resulting in a larger secondary short-circuit fire, resulting in a fire. There was a problem of increasing the seriousness of.

Therefore, as a conventional technique for supplementing this, there is a registration power No. 10-0483933 "Power plug and manufacturing method and electric device".

In the prior art, the blade caps 12A and 12B are inserted into the root portion of the connection terminal members 4A and 4B protruding from the plug body 13, and the connection terminal members 4A and 4B are provided. When inserted into the power outlet 2, the blade caps 12A, 12B fill and fill the gaps formed between the connecting holes 9A, 9B of the power outlet 2, thereby preventing the ingress of dust into the outlet. At the same time, it relates to a structure that prevents the plug from being easily pulled out from an external impact by increasing the connection force between the plug and the outlet.

However, in view of the tracking phenomenon, such a conventional technology is a structure that prevents dust from entering the outlet while the plug is inserted, and preventing the inflow of dust existing when the plug and the outlet are separated. It is difficult, and it is impossible to easily prevent the intrusion of dust adhering to the plug, so it is difficult to prevent the tracking phenomenon that occurs when the plug is inserted or removed. In addition, since the body fixing the connection terminal member after ignition is melted, the structure that can prevent the secondary short-circuit fire occurring when the connection terminal member is in contact with each other is not shown, and still there is a risk of fire.

Therefore, the present invention was made to solve the above problems,

In the plug made of connecting pin, ground pin, fixed body, and housing, the reinforcing body made of heat-resistant material is configured to be located at the front of the housing to prevent the tracking phenomenon caused by moisture or dust existing around the outlet and fire when inserted into the outlet. It is an object of the present invention to provide a power plug for preventing a tracking phenomenon.

In addition, in fixing the reinforcing body, the resin forming the housing is filled through the binding hole formed in the flange portion of the reinforcing body and placed on the front side of the flange, so that there is no need to provide a fixing device such as a separate bolt. An object of the present invention is to provide a power plug for preventing the tracking phenomenon.

Furthermore, the object of the flange is to provide a power plug for preventing a tracking phenomenon that further improves the binding force between the housing and the reinforcement by further comprising a binding groove through which the resin can pass separately from the binding hole.

In order to achieve the above object, the power plug for preventing the tracking phenomenon according to the present invention

A pair of connecting pins protruding toward the front to be inserted into the power outlet;

A grounding pin provided on the connecting pin and a grounding line connected to the rear side;

A fixing body fixing the connection pin and the ground pin;

A housing that fixes the fixed body therein and cures the resin while enclosing the outside to be integrally injection molded; And

A reinforcing body positioned in front of the fixed body and provided with one surface exposed to be formed of a heat-resistant material, and provided on the edge of the contact portion to be formed of a flange portion, wherein the resin is cured on the front surface of the flange portion and fixed to the housing;

It characterized in that it comprises a.

As described above, the power plug for preventing the tracking phenomenon according to the present invention is provided with a heat-resistant reinforcing body to prevent a fire from being caused by moisture or dust existing between the original plug and the power outlet. The material of the heat-resistant reinforcing body is made of a material that is more fire-resistant or heat-resistant than the existing housing, and it occurs when the connection pins come into contact with each other as the connection pins remain fixed without melting even if the housing melts when the fire occurs due to the tracking phenomenon. It is possible to prevent the secondary fire caused by the progressives. In other words, in the state where the fixing body fixes the connecting pin, the heat-resistant reinforcing body grips and fixes the connecting pin once more, so that it has an effect of not only increasing the holding power of the basic fixing state, but also firmly fixing in the event of a fire.

Also, as the heat-resistant reinforcing body is positioned exposed to the front side, unlike the existing front portion of the housing, which is disposed adjacent to the power outlet, the heat-resistant reinforcing body is in a location adjacent to the power outlet, so even if sparks occur therebetween It can be easily prevented from spreading by fire, so it is effective to prevent the initial fire caused by the tracking phenomenon.

Furthermore, the housing is made by injection molding by curing the resin, and as the resin passes through the binding hole formed in the flange portion of the reinforcing body to form a housing by curing the resin, it is necessary to use a separate fixing device. It can be securely fixed in the housing without any need, and in particular, it does not need to be provided with any fixing device in the contact portion of the reinforcement exposed to the outside, so that the aesthetic appearance is beautiful and the design function is improved,

In addition, by providing a binding groove in the flange portion, as the resin is cured through the binding groove as well as the binding hole, it has the effect of further improving the bonding force of the housing and the reinforcement.

1 is a photograph of a power plug for preventing the tracking phenomenon
Figure 2 is an exploded perspective view of a power plug for preventing the tracking phenomenon
3 and 4 are enlarged coupling diagrams of power plugs to prevent tracking phenomenon
Figure 5 is a perspective view of the reinforcement of the power plug for preventing the tracking phenomenon

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

The present invention can be applied to a variety of changes and can have a variety of forms, the implementation (態樣, aspect) (or embodiments) to describe in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, and it should be understood that it includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The same reference numbers in each drawing, especially the number of tens and ones, or the same number of tens, ones and alphabets refer to members having the same or similar functions, and unless otherwise specified, The member indicated by the reference numeral can be understood as a member conforming to these standards.

In addition, in each drawing, the components are exaggeratedly large (or thick) or smallly (or thinly) or simplified to express the size or thickness in consideration of convenience, etc., thereby limiting the protection scope of the present invention. It should not be.

The terminology used herein is only used to describe a specific embodiment (sun, 態樣, aspect) (or embodiment), and is not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist of~ are intended to designate the existence of features, numbers, steps, operations, components, parts or combinations thereof described in the specification, and one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

The power plug (A) for preventing the tracking phenomenon according to the present invention is made of a housing 10, a connection pin 20, a ground pin 30, a fixed body 40 and a reinforcement body 50, At this time, the power cord made of a wire and a ground wire connected to the power plug (A), and a power outlet into which the power plug (A) is inserted is a typical configuration, and a detailed description thereof will be omitted.

In addition, the power plug (A) described in the present invention is based on the power plug (A) to which the power cord having two strands of wire and one strand of ground wire is connected while complying with the KS standard used in Korea, It will be described with respect to the power plug (A), which is usually used at 220V.

Referring to Figures 1 to 5 again to describe each configuration in more detail, the connecting pin 20 is a part that is inserted into a power outlet, and is formed in the form of a kind of pin, but one end is forward (the part that is inserted into the outlet. It is formed to protrude toward the front.) The other end (rear) is formed with a terminal portion 21 that can be easily connected to the electric wire. These connecting pins 20 are usually provided in a form in which a pair of pins are located on the left and right sides so that they can be plugged into a power outlet, and they are fixed in a state gripped by a fixture 40 to be described later.

The ground pin 30 is a part connected to a ground wire so as to serve as a ground, and connected to a ground terminal of a power outlet, where a ground terminal of a general power outlet is formed, that is, a pair of connection terminals placed left and right In order to correspond to the position of the edge portion spaced apart from the top and bottom, the protruding piece 31 is formed to correspond to the position spaced apart from the top or bottom side of the connecting pin 20. The ground pin 30 may be formed extending from the protruding piece 31, and a connection terminal portion 33 to which a ground wire is connected may be formed at the rear side.

The ground pin 30 is generally formed such that a pair of protruding pieces 31 are located at the top and bottom, and vertically to connect the protruding pieces 31 so that one connecting terminal part 33 is extended. The extension piece 35 is formed to be extended, and accordingly, the connection terminal portion 33 may be formed adjacent to any one of the protruding pieces 31.

The protruding piece 31 of the ground pin 30 is located at the top or bottom of the fixture 40 to be described later, as a rectangular member formed along the longitudinal direction of the connecting pin 20, described later It is possible to cover the upper and lower portions of the housing 10 and the reinforcement body 50.

In addition, the extension piece 35 has a vertical piece 37 that is bent to the rear side along one of the longitudinal edges of the protruding piece 31 at the same time as covering the front portion of the fixed body 40, and accordingly, the ground pin ( The extension piece 35 of 30) is fitted into the pin groove 43 of the fixture 40 to be described later.

The fixing body 40 is a member for fixing the connecting pin 20, and generally holds and secures them in such a way that the connecting pin 20 and the ground pin 30 are respectively inserted.

In more detail, the fixing body 40 may be formed in a plate shape, a pair of pin holes 41 into which the connection pins 20 are inserted are formed on both left and right sides, and the ground pins 30 may be fitted. A pin groove 43 is formed.

A circumference of the pair of pin holes 41 is provided with an annular boss portion 411 protruding in a ring shape, wherein the boss portion 411 contacts the fixed body 40 and the connection pin 20. By increasing the area, it is possible to support the connecting pin 20 more stably, and as the fitting coupling with the reinforcing body 50 described later is added, the supporting force can be further secured.

In addition, the pin groove 43 is formed of a pair of grooves to be assembled regardless of the position of the connection terminal portion 33 when the ground pin 30 is coupled to the fixed body 40, the connection terminal portion 33 It is preferable that the terminal holes 45 to be inserted are formed in positions where they are crossed with each other on the upper side and the lower side.

Here, when the fixing body 40 is coupled to the ground pin 30, it is preferable that a separate coupling portion is provided. The extension piece 35 of the ground pin 30 is seated on the front portion of the fixing body 40. It is preferable that the engaging projection is formed in the middle of the extension piece 35, and the fixing body 40 is provided with a coupling hole at a position corresponding thereto, so as to further improve their binding force.

The housing 10 is to form the appearance of the power plug (A), is formed to surround the configuration and is injection molded in PVC material.

Here, the housing 10 is formed so that the connection pin 20 and the ground pin 30 are exposed to the outside, and is molded similarly to the shape of a conventional power plug A.

That is, the housing 10 is formed with a hollow 11 in the front so that the connecting pin 20 can protrude, and an exposed groove 13 in which the ground pin 30 can be exposed at upper and lower portions, respectively. It is injected to form.

The housing 10 in the present invention is made of PVC material, and thus can cope with an initial fire due to sparks generated by a tracking phenomenon occurring between the power plug (A) and a power outlet, and the front surface of the housing (10) As the reinforcement body 50 is exposed to the fire can be more effectively prevented.

When the reinforcing body 50 is described in more detail, first, the reinforcing body 50 may be embodied in various embodiments as illustrated in the drawings, and these embodiments are different in shape of the flange portion 53 According to,

First, a general configuration of the reinforcing body 50 will be described.

The reinforcing body 50 is located on the front side of the fixed body 40, the contact portion 51 with an insertion hole 511 into which the connection pin 20 can be inserted, and the edge of the contact portion 51 It may be made of a flange portion 53 provided in.

The insertion hole 511 is made so that the connecting pin 20 can be fitted, but is made of a hole having an inner diameter corresponding to the outer diameter size of the boss portion 411 so that the annular boss portion 411 can be fitted. .

The insertion hole 511 serves to hold the connection pin 20 once again with the fixing body 40 as the connection pin 20 is inserted to prevent the flow of the connection pin 20.

The reinforcing body 50 is a member manufactured separately from the housing 10, and is assembled with the fixing body 40 in an assembly step prior to injection molding, and the resin is cured in the state where the assembly is completed. It is made to be fixed to the housing 10 according to injection molding.

On the other hand, the reinforcing body 50 may be provided with a ground groove 55 to allow the ground pin 30 to be inserted, and the ground pin 30 in the state coupled with the fixed body 40 is privately grounded from the outside. To fit into the groove 55,

A coupling hook 57 is provided on the rear surface of the reinforcing body 50 to prevent the fixed body 40 from being detached from the rear.

The coupling hook 57 is formed to protrude on the rear surface of the reinforcing body 50, the tip portion has a shape bent toward the inside, when the reinforcing body 50 and the fixed body 40 is coupled, the It is formed at a position in contact with the side surface of the fixed body (40).

The coupling hook 57 is formed to have a predetermined elastic force, and when the reinforcement body 50 is fitted to the front surface of the fixed body 40, it moves while opening outwardly so as to surround the side surface of the fixed body 40 By doing so, the front end of the coupling hook 57 is coupled in a form to support the rear surface of the fixing body 40 so that it can be fixed firmly.

The housing 10 is formed with a hollow 11 so that the reinforcing body 50 can be exposed. At this time, an inner flange 15 bent inward may be formed on an edge of the hollow 11. , On the rim of the contact portion 51 of the reinforcing body 50, a flange portion 53 in close contact with the rear surface of the inner flange 15 is formed.

First, the flange portion 53 is provided by forming a step from the contact portion 51, whereby the flange portion 53 is located behind the inner flange 15, thereby leaving the reinforcement 50 It is configured to prevent, and to securely fix the reinforcement 50 to the housing (10).

As described above, the molding of the housing 10 may be realized due to an injection molding method in which resin is poured and cured.

The present invention enables the resin 10 to be securely fixed to the housing 10 by forming a binding hole 531 through which the resin can be penetrated, in the flange portion 53, thereby separating it separately. It has the feature of allowing the appearance to be beautiful as the device becomes unnecessary.

That is, after inserting the assembly in which the reinforcing body 50, the fixed body 40, the connecting pin 20, and the like are assembled into a molding frame, and pouring resin, the resin passes through the binding hole 531 to rise. Accordingly, by forming the inner flange 15 of the housing 10 on the front surface of the flange portion 53 and forming the exterior of the housing 10 together, the reinforcement body 50 can be stably fixed to the housing 10. So that it is configured.

Hereinafter, FIG. 5 shows embodiments divided according to the shape of the flange portion 53,

First, the flange portion 53 is provided with a plurality of binding holes 531, the resin is filled in the front of the flange portion 53 through the binding hole 531 to form the inner flange 15, the reinforcement 50 Is to be securely fixed within the housing (10).

In another embodiment, by forming the binding hole 531 as a long hole, by allowing a larger amount of resin to be filled through the binding hole 531 than the previous embodiment, the effect of further improving the bonding force Have
Here, the long hole refers to an oval shape formed along the flange portion, and the length may be variously implemented.

In addition, in the third embodiment, the flange portion 53 is provided with a plurality of binding grooves 533 formed in the direction of the contact portion 51, as well as the binding hole 531, the binding groove 533 When the resin is filled, as well as further improving the bonding force with the reinforcement 50, it has a feature that can effectively prevent the movement of the reinforcement 50 by fixing the rim of the reinforcement 50.

Further, although not shown in the drawing, the binding hole 531 and the binding groove 533 may be selectively formed in the flange portion 53, the shape of the binding hole 531 and the shape of the binding groove 533 also vary It can be implemented, and the scope of the rights should not be interpreted.

With the above-described configuration, the present invention, when the power plug (A) is inserted into the power outlet, the reinforcing body 50 is in a position adjacent to the power outlet, whereby even if the tracking phenomenon occurs of the housing 10 Since the front part is not directly contacted and the reinforcing body 50 is disposed, it is not easily ignited by micro-discharge or spark sparks, so that the initializing material can be prevented.

In addition, the reinforcing body 50 is fixed so that a pair of connecting pins 20 along with the fixing body 40 can be more firmly maintained in a state on both sides of the left and right sides, to some extent even in the case of ignition due to the first fire. Since the connection pin 20 can be maintained in a gripped state without melting, it is possible to prevent a secondary progressive fire caused by contact of the connection pin 20.

In addition, in describing the present invention, the power plug for preventing the tracking phenomenon having a specific shape, structure, and configuration has been mainly described with reference to the accompanying drawings, but the present invention can be modified, changed, and replaced in various ways by those skilled in the art. Such modifications, alterations and substitutions should be construed as falling within the protection scope of the present invention.

A: Power plug 10: Housing
11: Hollow 13: Exposed groove
15: inner flange 20: connecting pin
21: terminal 30: ground pin
31: protruding piece 33: connecting terminal portion
35: extension 37: vertical
40: fixture 41: pin hole
411: boss part 43: pin groove
45: terminal hole 50: reinforcement
51: contact 511: insertion hole
53: flange portion 531: binding hole
533: binding groove 55: ground groove
57: coupling hook

Claims (4)

A pair of connecting pins 20 protruding toward the front to be inserted into the power outlet;
A ground pin 30, which is located at an upper side or a lower side of the connection pin 20 and has a ground wire serving as a ground connected to the rear side;
A fixing body 40 for fixing the connection pin 20 and the ground pin 30;
A housing 10 that fixes the fixing body 40 therein and cures the resin while surrounding the outside, and is injection-molded integrally; And
Located in the front of the fixed body 40 is provided so that one surface is exposed, but made of a contact portion 51 formed of a heat-resistant material, and a flange portion 53 provided on the edge of the contact portion 51, the resin is the plan A stiffener 50 cured on the front of the branch 53 and fixed to the housing 10;
Including, but
The ground pin 30 is
A pair of rectangular protruding pieces formed to extend forward and backward along the longitudinal direction of the connecting pin 20 at positions spaced apart from the front upper side and the lower side of the outlet corresponding to the ground terminal provided in a normal power outlet ( 31) and,
An extension piece 35 extending vertically to connect the two projecting pieces 31,
It is formed extending from any one of the two protruding pieces 31, the connection terminal portion 33 is connected to the ground wire,
It comprises a vertical piece 37 formed by bending to the rear side along the longitudinal edge of the protruding piece 31,
The fixture 40,
A pair of pin holes 41 into which the connection pins 20 are fitted are formed on both left and right sides, and pin grooves 43 into which the ground pins 30 are inserted are formed on the upper and lower sides, thereby forming the pin holes ( 41) the connecting pin 20 and the ground pin 30 fitted to the pin groove 43 are fixed respectively
It is located on the front side of the fixing body 40, and the insertion hole 511 into which the connection pin 20 is inserted and fixed is formed to prevent the connection pin 20 from flowing, and to have heat resistance against external heat. It is further provided with a reinforcement 50 in the shape of a plate formed of a material,
The upper and lower outer circumferential edges of the reinforcing body 50 are formed with a grounding groove 55 into which the protruding piece 31 of the grounding pin 30 is inserted, so that the protruding portion is coupled with the fixed body 40. Supporting the coupling state of the fixed body 40 and the reinforcing body 50 by the combination of the piece 31 and the ground groove 55,
A coupling hook 57 is protruded on the rear surface of the reinforcing body 50 so that the fixing body 40 and the ground pin 30 and the reinforcing body 50 are coupled to each other by the coupling hook 57, ,
The coupling hook 57 is made of a material having elastic force, but is formed in a position in which the tip portion is bent toward the inside, and is formed at a position in contact with the side surface of the fixed body 40, so as to support the rear surface of the fixed body 40. under,
The housing 10,
By injection molding the assembly 40, the ground pin 30, the reinforcement body 50, and the connection pin 20 coupled to each other in an assembled state,
The fixing body 40, the ground pin 30, the reinforcement body 50 and the connecting pin 20 are integrated and fixed therein.
Hollow 11 is formed so that the front portion of the reinforcing body is exposed so that the connecting pin 20 can be fitted into the power outlet.
On the rim of the hollow 11, an inner flange 15 bent inward is formed so that the flange portion 53 is in close contact with the back of the inner flange 15 to prevent the reinforcing body 50 from coming off,
Power plug for preventing the tracking phenomenon, characterized in that it is integrally formed to surround the outside while forming a groove-shaped exposed groove (13) so that the protruding piece (31) of the ground pin (30) is exposed on the side. According to claim 1,
The flange portion 53
Power plug for preventing the tracking phenomenon, characterized in that a plurality of binding holes 531 through which the resin can pass. According to claim 2,
The binding hole 531 is a power plug for preventing the tracking phenomenon characterized in that it is made of an elliptical hole formed along the flange portion (53). The method according to claim 2 or 3,
Power supply plug for preventing the tracking phenomenon, characterized in that the flange portion 53 is further provided with a plurality of engaging grooves (533).

Images