Electric plug

Abstract

The present invention can provide a planar type electric plug capable of easily aligning first to third wires even if the configuration of a protruding pin is excluded from a lower mold, by aligning the wires through a guide pad unit.

Description

electric plug

[0001] The present invention relates to an electric plug, and more particularly, to an electric plug that can allow furniture or home appliances to be placed as close to a wall as possible and increase space utilization.

[0002] An electrical plug is a type of electrical wiring device. It is a connection device installed at the end of a cord connected to an electrical device and plugged into an outlet. Typically, electricity entering a home or factory is connected to an outlet, and plugging an electrical device into the outlet supplies electricity to the device, enabling its operation.

[0003] At this time, the plug has two pins (connection pins) connected to the cord fixed to the plug body, such as the part that connects to the outlet, and by inserting and fixing these into the outlet hole, electricity is supplied to the electrical appliance.

[0004] That is, the general structure of the above-mentioned plug is composed of a plug body and a pair of connection pins provided on the front of the plug body, and according to this configuration, power can be supplied to a home appliance by connecting the connection pins provided on the plug body to the connection holes provided on the outlet.

[0005] At this time, the connecting pin is connected to a wire, and the wire is connected to an electric device, so that power supplied from the connecting pin can be supplied to the electric device through the wire.

[0006] Meanwhile, the plug can be broadly classified into two types according to the shape of the plug, firstly, a "straight plug" in which the connecting pin and the wiring are arranged in a straight line, and secondly, a "right-angled plug" in which the connecting pin and the wiring are arranged at a right angle.

[0007] Figure 1 is a real photograph showing a conventional rectangular plug.

[0008] Referring to FIG. 1, a conventional right-angled plug (10) includes a plug body (20); a connecting pin portion (30) protruding in a first direction of the plug body (20); and a wiring portion (40) arranged in a second direction of the plug body (20).

[0009] That is, the connecting pin portion (30) is connected to a wire (not shown) located in the wiring portion (40), so that power supplied from the connecting pin portion (30) can be supplied to an electric device through the wiring of the wiring portion (40).

[0010] At this time, as shown in Fig. 1, since the connecting pin portion (30) and the wiring portion (40) are arranged at a right angle, the plug of Fig. 1 can be defined as a right-angled plug.

[0011] However, in the present invention, for the convenience of explanation, the above-described plug is defined as a "straight plug" and a "right-angled plug", but the definition of "right-angled" is to define the angle formed by the connecting pin portion and the wiring portion, and the angle formed by the connecting pin portion and the wiring portion may be an acute angle or an obtuse angle, and therefore, in the present invention, the "right-angled plug" may be defined as a "non-straight-angled plug".

[0012] That is, assuming that the angle formed by the connecting pin portion (30) and the wiring portion (40) of the straight plug is 0 degrees, the right-angled plug according to the present invention is defined as a non-straight plug, so that the angle formed by the connecting pin portion (30) and the wiring portion (40) can be a right angle, an acute angle, or an obtuse angle.

[0013] Meanwhile, as illustrated in FIG. 1, the conventional rectangular plug (10) may further include a reinforcing bar (50) into which the wiring portion (40) is inserted and which is placed at the other end of the plug body (20). Since such a reinforcing bar is well known in the art, a detailed description thereof will be omitted below, and the presence or absence of the reinforcing bar is not limited in the present invention.

[0014] However, since these conventional right-angled plugs have a structure in which the plug body protrudes outside the outlet when connected to the outlet, there is a problem in that home appliances or furniture cannot be placed as close to the wall as possible.

[0015] That is because home appliances or furniture cannot be placed as close to the wall as possible to secure space due to the protruding part of the plug body connected to the outlet.

[0016] Accordingly, research and development is required on a flat-type plug that can maximize the space utilization by minimizing the protruding part of the plug connected to the wall outlet, thereby allowing furniture or home appliances to be placed as close to the wall as possible.

[0017] Accordingly, the inventor of the present invention has applied for a flat type electric plug in Korean Patent Publication No. 10-2022-0015540.

[0018] More specifically, in the Korean Patent Publication No. 10-2022-0015540, in implementing a flat type electric plug, the electric plug includes a first wiring connected to a first connection pin portion; a second wiring connected to a second connection pin portion; and a third wiring connected to a ground portion. It is important that the first wiring, the second wiring, and the third wiring are arranged in a straight line based on each cross-section, for example, in the area of ​​the first handle body portion.

[0019] Accordingly, in the Korean Patent Publication No. 10-2022-0015540, in order to implement this, the lower mold for manufacturing the electric plug includes a lower mold part for injection of the plug main body; and a lower mold part for injection of the plug auxiliary body part that is arranged continuously with the lower mold part for injection of the plug main body part, wherein the lower mold part for injection of the plug auxiliary body part includes a first protruding pin located in a first region; and a second protruding pin located in a second region and arranged to be spaced apart from the first protruding pin in the longitudinal direction, so that the first wiring, the second wiring, and the third wiring can be arranged in a straight line based on each cross-section, for example, in the region of the first handle body part.

[0020] However, in the case of the Korean Patent Publication No. 10-2022-0015540, since the wiring is aligned through the first protruding pin and the second protruding pin as described above, the first protruding pin and the second protruding pin must be included in the lower mold, and there is a problem that it is somewhat difficult to design the lower mold due to the first protruding pin and the second protruding pin.

[0021] The problem to be solved by the present invention is to provide a flat-type electric plug that can maximize space utilization by minimizing the protruding portion of the plug connected to an outlet installed on a wall, thereby allowing furniture or home appliances to be placed as close to the wall as possible.

[0022] In addition, the present invention aims to provide a flat-type electric plug that can easily align the first wiring to the third wiring even if the configuration of the protruding pin in the lower mold is excluded.

[0023] The purposes of the present invention are not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art from the description below.

[0024] In order to solve the above-mentioned problem, the present invention provides an electric plug, comprising: a plug main body; a connecting pin portion exposed in a first direction from the plug main body; a plug auxiliary body portion extending in a second direction from the plug main body; and a wiring portion continuously arranged with the plug auxiliary body portion, wherein the connecting pin portion includes a first connecting pin portion exposed in a first direction from the plug main body portion; and a second connecting pin portion exposed in the first direction from the plug main body portion and arranged at a predetermined distance from the first connecting pin portion, and further comprising a ground portion inside the plug main body portion, wherein the electric plug includes a first wiring connected to the first connecting pin portion; a second wiring connected to the second connecting pin portion; and a third wiring connected to the ground portion, and wherein the plug auxiliary body portion includes: a guide pad portion for guiding the first wiring, the second wiring, and the third wiring in one direction; And an electric plug including a first resin layer covering the guide pad portion, the first wiring, the second wiring, and the third wiring is provided.

[0025] In addition, the present invention provides an electric plug characterized in that the guide pad portion includes a first base plate including an upper surface and a lower surface positioned opposite the upper surface; an upper first concave portion positioned on the upper surface side of the first base plate, at one side in the width direction of the guide pad portion, and arranged in the length direction of the guide pad portion; an upper second concave portion positioned on the upper surface side of the first base plate, at the other side in the width direction of the guide pad portion, and arranged in the length direction of the guide pad portion; and an upper third concave portion positioned between the upper first concave portion and the upper second concave portion, spaced apart from the upper first concave portion and the upper second concave portion by a predetermined distance, and arranged in the length direction of the guide pad portion, wherein the first wiring is arranged and guided in the upper first concave portion, the second wiring is arranged and guided in the upper second concave portion, and the third wiring is arranged and guided in the upper third concave portion.

[0026] In addition, the present invention provides an electric plug including the guide pad portion, an upper first convex portion arranged at a point where the upper first concave portion and the upper third concave portion are connected, and arranged in the longitudinal direction of the guide pad portion; an upper second convex portion arranged at a point where the upper second concave portion and the upper third concave portion are connected, and arranged in the longitudinal direction of the guide pad portion; an upper third convex portion arranged adjacent to the upper first concave portion, and arranged at one edge of the guide pad portion in the width direction, and arranged in the longitudinal direction of the guide pad portion; and an upper fourth convex portion arranged adjacent to the upper second concave portion, and arranged at the other edge of the guide pad portion in the width direction, and arranged in the longitudinal direction of the guide pad portion.

[0027] In addition, the present invention includes a first through hole disposed in a certain area of ​​the upper first convex portion, disposed in the height direction of the guide pad portion, penetrating from the upper surface of the first base plate to the lower surface of the first base plate, and further, the upper second convex portion includes a second through hole disposed in a certain area of ​​the upper second convex portion, disposed in the height direction of the guide pad portion, penetrating from the upper surface of the first base plate to the lower surface of the first base plate (510), and further, the upper third convex portion includes a third through hole disposed in a certain area of ​​the upper third convex portion, disposed in the height direction of the guide pad portion, penetrating from the upper surface of the first base plate to the lower surface of the first base plate, and further, the upper fourth convex portion includes a third through hole disposed in a certain area of ​​the upper fourth convex portion, disposed in the height direction of the guide pad portion, penetrating from the upper surface of the first base plate to the lower surface of the first base plate. An electrical plug is provided that includes a fourth through hole penetrating to the lower surface.

[0028] In addition, the present invention provides an electric plug in which the guide pad portion further includes a lower first concave portion positioned on the lower surface side of the first base plate and arranged in the longitudinal direction of the guide pad portion.

[0029] In addition, the present invention provides a guide pad section, including: an upper flat pad section positioned above the guide pad section in the height direction, and arranged in the length direction of the guide pad section; a lower flat pad section positioned facing the upper flat pad section, and positioned below the guide pad section in the height direction, and arranged in the length direction of the guide pad section; a first semicircular pad section positioned on one side in the width direction of the guide pad section, one side being arranged continuously with one side of the upper flat pad section, and the other side being arranged continuously with one side of the lower flat pad section, and being arranged in the length direction of the guide pad section, and having a semicircular cross-section; And a second side semicircular pad portion which is disposed facing the first side semicircular pad portion and located on the other side in the width direction of the guide pad portion, one side of which is disposed continuously with the other side of the upper flat pad portion, and the other side of which is disposed continuously with the other side of the lower flat pad portion, and which is disposed in the length direction of the guide pad portion and has a semicircular cross-section, and the guide pad portion includes a first space portion formed by continuously arranging the upper flat pad portion, the first side semicircular pad portion, the lower flat pad portion, and the second side semicircular pad portion, and the first wiring, the second wiring, and the third wiring are arranged in the first space portion.

[0030] In addition, the present invention provides an electric plug characterized in that the inner surface of the upper flat pad portion, the inner surface of the first-side semicircular pad portion, the inner surface of the lower flat pad portion, and the inner surface of the second-side semicircular pad portion each include an adhesive portion, and when the first wiring, the second wiring, and the third wiring are arranged in the first space portion, the first wiring, the second wiring, and the third wiring are attached to the inner surfaces of the upper flat pad portion, the first-side semicircular pad portion, the lower flat pad portion, and the second-side semicircular pad portion by the adhesive portion.

[0031] In addition, the present invention provides an electric plug characterized in that the first wiring is attached to the inner surface of the first-side semicircular pad portion, the second wiring is attached to the inner surface of the second-side semicircular pad portion, and the third wiring is attached to the inner surface of the upper flat pad portion and the inner surface of the lower flat pad portion.

[0032] In addition, the present invention provides an electric plug characterized in that the material of the first resin layer is PVC resin, ABS resin or PC resin, and the material of the guide pad part is PVC resin, ABS resin or PC resin.

[0033] In addition, the present invention provides an electric plug, wherein the electric plug comprises: a plug main body part; a connecting pin part exposed in a first direction from the plug main body part; a plug auxiliary body part extending in a second direction from the plug main body part; and a wiring part continuously disposed with the plug auxiliary body part, wherein the connecting pin part comprises a first connecting pin part exposed in a first direction from the plug main body part; and a second connecting pin part exposed in the first direction from the plug main body part and disposed at a predetermined distance from the first connecting pin part, and further comprising a grounding part inside the plug main body part, the electric plug comprising a first wiring connected to the first connecting pin part; a second wiring connected to the second connecting pin part; and a third wiring connected to the grounding part, and wherein the plug auxiliary body part comprises a guide holder part disposed inside the plug auxiliary body part and guiding the first wiring to the third wiring in one direction, the guide holder part including a space into which the first wiring to the third wiring are inserted.

[0034] In addition, the present invention provides an electric plug including the guide holder portion, an upper support plate arranged lengthwise; a lower support plate arranged at a predetermined height distance from the upper support plate, positioned in a region corresponding to the upper support plate, and arranged lengthwise; and a side support plate connected to one end in the width direction of the upper support plate and one end in the width direction of the lower support plate, and arranged lengthwise.

[0035] In addition, the present invention provides an electric plug characterized in that one end in the width direction of the side support plate is positioned continuously with one end in the width direction of the upper support plate, and the other end in the width direction of the side support plate is positioned continuously with one end in the width direction of the lower support plate, and the upper support plate, the lower support plate, and the side support plate are arranged lengthwise, so that the guide holder portion has a “ㄷ” shaped cross-sectional structure.

[0036] In addition, the present invention provides an electric plug including the guide holder portion, the space portion formed by the height-wise gap between the upper support plate and the lower support plate.

[0037] In addition, the present invention provides an electric plug, wherein the plug auxiliary main body includes a first lower groove portion located in a first region of a lower portion of the plug auxiliary main body, wherein the first lower groove portion includes a first lower groove portion located at one longitudinal end of the plug auxiliary main body; and a first lower groove portion located at the other longitudinal end of the plug auxiliary main body and spaced apart from the first lower groove portion.

[0038] In addition, the present invention provides an electric plug, wherein the plug auxiliary main body includes a lower second groove portion located in a second region of a lower portion of the plug auxiliary main body, wherein the lower second groove portion includes a lower second groove portion located between the lower first groove portion and the lower first groove portion and located on one side in the longitudinal direction of the plug auxiliary main body; and a lower second groove portion located at a predetermined distance from the lower second groove portion and located between the lower first groove portion and the lower first groove portion and located on the other side in the longitudinal direction of the plug auxiliary main body.

[0039] In addition, the present invention provides an electric plug, wherein the plug auxiliary body part includes an upper surface groove part located in a first region of an upper portion of the plug auxiliary body part, wherein the upper surface groove part includes a first upper surface groove part located at one longitudinal end of the plug auxiliary body part; and a second upper surface groove part located spaced apart from the first upper surface groove part and located at the other longitudinal end of the plug auxiliary body part.

[0040] According to the present invention as described above, a flat-type electric plug can be provided that allows furniture or home appliances to be placed as close to a wall as possible and increases space utilization.

[0041] In addition, in the present invention, by aligning the wiring through the guide pad portion, a flat-type electric plug can be provided that can easily align the first wiring to the third wiring even if the configuration of the protruding pin in the lower mold is excluded.

[0042] In addition, the present invention can provide a flat-type electric plug that can easily align the first to third wiring by aligning the wiring through a guide holder portion.

[0043] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder portion, the bottom surface of the guide holder portion is supported by the lower protruding pin, and therefore, the bottom surface of the guide holder portion can be positioned at a certain distance from the inner surface of the lower mold portion for injection of the plug auxiliary main body portion.

[0044] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder portion, the upper surface of the guide holder portion is supported by the upper protruding pin, and therefore, the upper surface of the guide holder portion can be positioned at a certain distance from the inner surface of the upper mold portion for injection of the plug auxiliary main body portion.

[0045] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder portion, the bottom surface of the guide holder portion is supported by the protruding pin, and further, the side surface of the guide holder portion is supported by the first guide pin and the second guide pin, thereby preventing the guide holder portion from being separated in the width direction of the lower mold.

[0046] Figure 1 is a real photograph showing a conventional rectangular plug.

[0047] FIG. 2 is a perspective view showing an electric plug according to the present invention, FIG. 3 is a bottom view showing an electric plug according to the present invention, and FIG. 4 is a front view showing an electric plug according to the present invention.

[0048] Figure 5 is a schematic drawing showing a mold for manufacturing an electric plug according to the present invention.

[0049] FIG. 6 is a schematic perspective view showing a guide pad part according to a first embodiment of the present invention, FIG. 7 is a schematic side view showing a guide pad part according to a first embodiment of the present invention, FIG. 8 is a schematic perspective view showing a state in which a first wiring line is arranged in a guide pad part according to a first embodiment of the present invention, and FIG. 9 is a schematic perspective view showing a state in which a plug auxiliary body part is formed by injecting resin into a mold in a state in which a wiring line is arranged in a guide pad part according to a first embodiment of the present invention.

[0050] FIG. 10 is a schematic perspective view showing a guide pad part according to a first modified example of the first embodiment of the present invention, and FIG. 11 is a schematic bottom view showing a guide pad part according to a first modified example of the first embodiment of the present invention.

[0051] FIG. 12 is a schematic perspective view showing a guide pad part according to a second modified example of the first embodiment of the present invention, and FIG. 13 is a schematic front view showing a guide pad part according to a second modified example of the first embodiment of the present invention.

[0052] FIG. 14 is a schematic perspective view showing a guide pad part according to a second embodiment of the present invention, FIG. 15 is a schematic perspective view showing a state in which wiring is arranged in a guide pad part according to a second embodiment of the present invention, and FIG. 16 is a schematic front view showing a state in which wiring is arranged in a guide pad part according to a second embodiment of the present invention.

[0053] FIG. 17 is a schematic perspective view showing a guide pad part according to a first modified example of a second embodiment of the present invention, and FIG. 18 is a schematic plan view showing a guide pad part according to a first modified example of a second embodiment of the present invention.

[0054] FIG. 19 is a perspective view illustrating an electric plug according to another example of the present invention, FIG. 20 is a plan view illustrating an electric plug according to another example of the present invention, and FIG. 21 is a bottom view illustrating an electric plug according to another example of the present invention.

[0055] FIG. 22 is a schematic perspective view illustrating a lower mold for manufacturing an electric plug according to another example of the present invention, and FIG. 23 is a schematic side view illustrating a lower mold for manufacturing an electric plug according to another example of the present invention.

[0056] FIG. 24 is a schematic perspective view showing a guide holder part according to another example of the present invention, FIG. 25 is a schematic front view showing a guide holder part according to another example of the present invention, and FIG. 26 is a schematic perspective view showing a state in which a first wiring, a second wiring, and a third wiring are inserted into a space of a guide holder part according to another example of the present invention.

[0057] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0058] The specific details for implementing the present invention will be described in detail with reference to the attached drawings. Regardless of the drawings, the same reference numerals refer to the same components, and "and / or" includes each and every combination of one or more of the mentioned items.

[0059] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it should be understood that a "first" component referred to below may also be a "second" component within the technical scope of the present invention.

[0060] The terminology used herein is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms, unless specifically stated otherwise. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components in addition to the components mentioned.

[0061] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0062] Spatially relative terms such as "below," "beneath," "lower," "above," and "upper" can be used to easily describe the relationship between one component and other components as depicted in the drawings. Spatially relative terms should be understood to include different orientations of the components during use or operation in addition to the orientations depicted in the drawings. For example, if a component depicted in the drawings were flipped over, a component described as "below" or "beneath" another component could be placed "above" the other component. Thus, the exemplary term "below" can include both the above and below orientations. Components can also be oriented in other directions, and thus spatially relative terms can be interpreted based on their orientation.

[0063] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0064] FIG. 2 is a perspective view showing an electric plug according to the present invention, FIG. 3 is a bottom view showing an electric plug according to the present invention, and FIG. 4 is a front view showing an electric plug according to the present invention.

[0065] Referring to FIGS. 2 to 4, an electric plug (100) according to the present invention includes a plug main body (110); a connecting pin portion (120) exposed in a first direction from the plug main body (110); a plug auxiliary body portion (130) extending in a second direction from the plug main body (110); and a wiring portion (140) arranged continuously with the plug auxiliary body portion (130).

[0066] Meanwhile, the electric plug according to the present invention can be defined as a right-angled plug in which the connecting pin portion (120) and the wiring portion (140) are arranged at a right angle. However, the definition of "right-angled" is intended to define the angle formed by the connecting pin portion and the wiring portion, and the angle formed by the connecting pin portion and the wiring portion may be an acute angle or an obtuse angle. Therefore, in the present invention, the "right-angled plug" can be defined as a "non-straight plug."

[0067] That is, assuming that the angle formed by the connecting pin portion (120) and the wiring portion (140) of the straight plug is 0 degrees, the right-angled plug according to the present invention is defined as a non-straight plug, so that the angle formed by the connecting pin portion (120) and the wiring portion (140) can be a right angle, an acute angle, or an obtuse angle.

[0068] At this time, the electric plug (100) according to the present invention can be defined as including a plug main body area (A); a connection pin area (B) exposed in a first direction from the plug main body area (A); a plug auxiliary body area (C) extending in a second direction from the plug main body area (A); and a wiring area (D) arranged continuously with the plug auxiliary body area (C).

[0069] In addition, it can be defined that the plug main body (110) is located in the plug main body area (A), the connection pin area (120) is located in the connection pin area (B), the plug auxiliary body area (130) is located in the plug auxiliary body area (C), and the wiring area (140) is located in the wiring area (D).

[0070] At this time, the present invention is characterized in that the upper surface of the plug main body (110) and the upper surface of the plug auxiliary body (130) are positioned on the same plane, and therefore, an electric plug having such a structure can be defined as a flat-type electric plug.

[0071] Continuing with reference to FIGS. 2 to 4, the plug auxiliary body region (C) includes a handle region (C1) that is arranged continuously from the plug main body region (A) and has a first thickness; and a handle support region (C2) that is arranged continuously with the handle region (C1) on one side and continuously with the wiring region (D) on the other side and has a second thickness.

[0072] At this time, the second thickness of the handle support part area (C2) is configured to be thicker than the first thickness of the handle part area (C1), that is, as shown in FIG. 4, the second thickness of the handle support part area (C2) is configured to be thicker than the first thickness of the handle part area (C1), thereby improving the pulling force of the plurality of wires located in the wiring part (140) through the handle support part area (C).

[0073] Meanwhile, it can be defined that a handle part (130a) is located in the handle part area (C1), and a handle support part (130b) is located in the handle support part area (C2).

[0074] Accordingly, the plug auxiliary body part can be defined as including a handle part that is arranged continuously from the plug main body part and has a first thickness; and a handle support part that is arranged continuously on one side with the handle part and continuously on the other side with the wiring part and has a second thickness.

[0075] At this time, as described above, in the present invention, the upper surface of the plug main body part (110) and the upper surface of the plug auxiliary body part (130) are located on the same plane, and therefore, the upper surface of the plug main body part (110) and the upper surfaces of the handle part (130a) and the handle support part (130b) are located on the same plane, and in the present invention, an electric plug having such a structure can be defined as a flat-type electric plug.

[0076] As described above, conventional right-angled plugs have a structure in which the plug body protrudes outside the outlet when connected to the outlet, which causes a problem in that home appliances or furniture cannot be placed as close to the wall as possible.

[0077] That is because home appliances or furniture cannot be placed as close to the wall as possible to secure space due to the protruding part of the plug body connected to the outlet.

[0078] More specifically, the conventional right-angled plug adopts a structure in which the plug body functions as a handle and the plug body protrudes considerably thickly outward from the outlet to function as a handle, so that home appliances or furniture cannot be placed as close to the wall as possible to secure space due to the protruding portion of the plug body.

[0079] However, in the present invention, the handle portion (130a) that functions as a handle is extended in the second direction from the plug main body portion (110), and further, the upper surface of the plug auxiliary body portion (130) including the handle portion (130a) is positioned on the same plane as the upper surface of the plug main body portion (110), thereby minimizing the thickness of the plug main body portion (110), thereby minimizing the protruding portion of the plug that is connected to an outlet provided on a wall surface, thereby providing a flat type plug that can bring furniture or home appliances in maximum close contact with a wall surface and increase space utilization.

[0080] Meanwhile, the handle portion (220) has a first thickness, and the handle support portion (230) has a second thickness, but the second thickness can be defined as being thicker than the first thickness.

[0081] In addition, as illustrated in FIG. 4, the upper surface of the handle portion (130a) and the upper surface of the handle support portion (130b) are positioned on the same plane, that is, the upper surface of the handle portion (130a) and the upper surface of the handle support portion (130b) are flat, and the lower surface of the handle support portion (130b) protrudes further downward than the lower surface of the handle portion (130a), so that the second thickness of the handle support portion (130b) can be configured to be thicker than the first thickness of the handle portion (130a).

[0082] Continuing with reference to FIG. 2, the connecting pin portion (120) includes a first connecting pin portion (120a) exposed in a first direction from the plug main body portion (110); and a second connecting pin portion (120b) exposed in a first direction from the plug main body portion (110) and positioned at a predetermined distance from the first connecting pin portion (120a). However, although the number of connecting pin portions is illustrated as two in the drawing, the number of connecting pin portions is not limited in the present invention.

[0083] Meanwhile, although not shown in the drawing, the inside of the main body of the plug may include a grounding portion, and in the case of a general electric plug, it includes a first wiring (121a) connected to the first connection pin portion (120a); a second wiring (121b) connected to the second connection pin portion (120b); and a third wiring (121c) connected to the grounding portion. The first to third wirings extend to the wiring portion (140), and power, etc. can be supplied to an electronic device to which the electric plug is connected through the plurality of wirings.

[0084] At this time, the first wiring (121a), the second wiring (121b), and the third wiring (121c) are electrically connected to the first connection pin portion (120a), the second connection pin portion (120b), and the ground portion, respectively, in the plug main body portion (110), and are arranged along the handle portion (220) and the handle support portion (230), and then extended to the wiring portion (140).

[0085] FIG. 5 is a schematic drawing illustrating a mold for manufacturing an electric plug according to the present invention. The mold for manufacturing the electric plug according to the present invention in FIG. 5 may refer to the mold of Korean Patent Publication No. 10-2022-0015540, as described above, except as otherwise described below.

[0086] Meanwhile, the mold in Fig. 5 is an injection mold, and only the lower mold is shown in the drawing, and the upper mold is omitted.

[0087] Referring to FIG. 5, a lower mold (400) (hereinafter referred to as “lower mold”) for manufacturing an electric plug according to the present invention includes a lower mold part (410) for injection of a plug main body part; and a lower mold part (420) for injection of a plug auxiliary body part that is arranged continuously with the lower mold part (410) for injection of the plug main body part.

[0088] That is, the plug main body part described above can be injection-molded in the lower mold part (410) for injection of the plug main body part, and the plug auxiliary body part described above can be injection-molded in the lower mold part (420) for injection of the plug auxiliary body part.

[0089] At this time, as shown in FIG. 5, the first connecting pin portion and the second connecting pin portion are inserted into the lower mold portion (410) for injection of the plug main body, and the first wiring (not shown) connected to the first connecting pin portion (121a); ​​the second wiring (not shown) connected to the second connecting pin portion (not shown); and the third wiring (not shown) connected to the ground portion are aligned to the lower mold portion (420) for injection of the plug auxiliary body, and the first to third wirings can be arranged to extend to the wiring portion (140).

[0090] Afterwards, although not shown in the drawing, when the lower mold (400) and the upper mold (not shown) are combined, resin is injected into the inside of the mold, thereby manufacturing another electric plug according to the present invention.

[0091] Continuing, referring to FIG. 5, the lower mold (400) according to the present invention includes a guide pad portion (500) arranged on the upper portion of the lower mold portion (420) for injection of the plug auxiliary body portion.

[0092] At this time, the guide pad part (500) is for guiding the first to third wiring in one direction as described above, and it is preferable that the material of the guide pad part is a resin material such as PVC resin, ABS resin, or PC resin.

[0093] Meanwhile, the guide pad portion (500) guides the first to third wirings in one direction as described above, which means that the first wiring, the second wiring, and the third wiring are arranged in a straight line based on their respective cross sections, for example, in the area of ​​the first handle body portion, and the same applies hereinafter.

[0094] As described above, the electric plug according to the present invention can be manufactured by injecting resin into the interior of the mold while the lower mold (400) and the upper mold (not shown) are combined, and when the electric plug is manufactured by injecting resin into the interior of the mold, in order to improve the adhesion between the guide pad portion and the resin injected into the interior of the mold, the material of the guide pad portion is preferably a resin material such as PVC resin, ABS resin, or PC resin.

[0095] Meanwhile, in the drawing, the guide pad part is illustrated as being arranged over the entire area of ​​the lower mold part (420) for injection of the plug auxiliary main body part, based on the longitudinal direction of the lower mold part (420) for injection of the plug auxiliary main body part. However, since the guide pad part serves to guide the first wiring to the third wiring in one direction, it is natural that the guide pad part can be arranged over a part of the area of ​​the lower mold part (420) for injection of the plug auxiliary main body part.

[0096] Hereinafter, the guide pad portion according to the present invention will be described in more detail.

[0097] FIG. 6 is a schematic perspective view showing a guide pad part according to a first embodiment of the present invention, FIG. 7 is a schematic side view showing a guide pad part according to a first embodiment of the present invention, FIG. 8 is a schematic perspective view showing a state in which a first wiring line is arranged in the guide pad part according to the first embodiment of the present invention, and FIG. 9 is a schematic perspective view showing a state in which a plug auxiliary body part is formed by injecting resin into a mold in a state in which a wiring line is arranged in the guide pad part according to the first embodiment of the present invention. Meanwhile, in FIG. 8, only the first wiring line is shown for convenience of explanation.

[0098] First, the guide pad portion according to the present invention can be defined as follows.

[0099] That is, the guide pad portion according to the present invention includes a longitudinal direction of the guide pad portion (X direction in FIG. 6); a width direction of the guide pad portion (Y direction in FIG. 6) located on the same plane as the longitudinal direction of the guide pad portion; and a height direction of the guide pad portion (Z direction in FIG. 6) located on a vertical plane from the longitudinal direction of the guide pad portion and the width direction of the guide pad portion. At this time, the direction in which the guide pad portion is extended long and the wiring is aligned in one direction can be defined as the longitudinal direction of the guide pad portion.

[0100] Next, referring to FIGS. 6 and 7, a guide pad portion (500) according to the present invention includes a first base plate (510) including an upper surface (510a) and a lower surface (510b) positioned opposite the upper surface; an upper first concave portion (511a) positioned on the upper surface (510a) side of the first base plate (510), at one widthwise side of the guide pad portion, and arranged in the lengthwise direction of the guide pad portion; an upper second concave portion (511b) positioned on the upper surface (510a) side of the first base plate (510), at the other widthwise side of the guide pad portion, and arranged in the lengthwise direction of the guide pad portion; And it includes an upper third concave portion (511c) which is arranged between the upper first concave portion (511a) and the upper second concave portion (511b), and is arranged at a certain interval from the upper first concave portion (511a) and the upper second concave portion (511b), and is arranged in the longitudinal direction of the guide pad portion.

[0101] At this time, as shown in FIGS. 8 and 9, a first wiring (121a) may be arranged and guided in the upper first concave portion (511a), a second wiring (121b) may be arranged and guided in the upper second concave portion (511b), and a third wiring (121c) may be arranged and guided in the upper third concave portion (511c).

[0102] Next, referring to FIGS. 6 and 7, the guide pad portion (500) according to the present invention includes an upper first convex portion (511a) disposed at a point where the upper first concave portion (511a) and the upper third concave portion (511c) are connected, and disposed in the longitudinal direction of the guide pad portion; and an upper second convex portion (511b) disposed at a point where the upper second concave portion (511b) and the upper third concave portion (511c) are connected, and disposed in the longitudinal direction of the guide pad portion.

[0103] At this time, the first upper convex portion (511a) and the second upper convex portion (511b) are arranged so that the first wiring (121a) is guided by the first upper concave portion (511a), the second wiring (121b) is guided by the second upper concave portion (511b), and the third wiring (121c) is guided by the third upper concave portion (511c), so that the first wiring to the third wiring can be arranged at a predetermined interval, thereby making it easier to arrange the first wiring to the third wiring.

[0104] Next, referring to FIGS. 6 and 7, the guide pad portion (500) according to the present invention includes an upper third convex portion (512c) disposed adjacent to the upper first concave portion (511a), disposed on one edge of the width direction of the guide pad portion, and disposed in the length direction of the guide pad portion; and an upper fourth convex portion (512d) disposed adjacent to the upper second concave portion (511b), disposed on the other edge of the width direction of the guide pad portion, and disposed in the length direction of the guide pad portion.

[0105] At this time, the upper third convex portion (512c) and the upper fourth convex portion (512d) can prevent the first wiring (121a) from being arranged and guided by the upper first concave portion (511a) and the second wiring (121b) from being arranged and guided by the upper second concave portion (511b), respectively, from being separated from the upper first concave portion (511a) and the upper second concave portion (511b).

[0106] Next, referring to FIG. 9, as described above, in the present invention, a plug auxiliary body part can be formed by injecting resin into the inside of a mold while wiring is arranged in the guide pad part according to the first embodiment.

[0107] That is, by forming a first resin layer (510) that covers the guide pad portion and the first to third wiring while the first to third wiring are guided by the guide pad portion, the plug auxiliary body portion according to the present invention can be formed.

[0108] At this time, the material of the first resin layer may be a resin material such as PVC resin, ABS resin, or PC resin, but the material of the first resin layer is not limited in the present invention, and however, in the present invention, it is preferable that the material of the first resin layer and the material of the guide pad part are the same.

[0109] Accordingly, the electric plug according to the present invention can be defined as follows.

[0110] First, referring to the above-described FIGS. 2 to 4, an electric plug (100) according to the present invention includes a plug main body (110); a connecting pin portion (120) exposed in a first direction from the plug main body (110); a plug auxiliary body portion (130) extending in a second direction from the plug main body (110); and a wiring portion (140) arranged continuously with the plug auxiliary body portion (130).

[0111] In addition, the connecting pin portion (120) includes a first connecting pin portion (120a) exposed in a first direction from the plug main body portion (110); and a second connecting pin portion (120b) exposed in a first direction from the plug main body portion (110) and positioned at a predetermined distance from the first connecting pin portion (120a). In addition, the plug main body portion includes a ground portion inside.

[0112] In addition, the electric plug includes a first wiring (121a) connected to the first connection pin portion (120a); a second wiring (121b) connected to the second connection pin portion (120b); and a third wiring (121c) connected to the ground portion.

[0113] At this time, as illustrated in FIG. 9, the plug auxiliary body part (130) of the electric plug (100) according to the present invention includes a guide pad part (500) for guiding the first wiring to the third wiring in one direction; and a first resin layer (510) covering the guide pad part and the first wiring to the third wiring.

[0114] Meanwhile, since the shape of the guide pad portion is as described above, a detailed description thereof will be omitted, and various embodiments of the guide pad portion described below can be applied to the electric plug according to the present invention.

[0115] Fig. 10 is a schematic perspective view showing a guide pad part according to a first modified example of the first embodiment of the present invention, and Fig. 11 is a schematic bottom view showing a guide pad part according to a first modified example of the first embodiment of the present invention. Hereinafter, the guide pad part according to the first modified example of the first embodiment of the present invention may refer to the guide pad part according to the first embodiment of the present invention described above, except as described below.

[0116] Referring to FIGS. 10 and 11, as described above, the guide pad portion (500') according to the first modification of the first embodiment of the present invention is arranged at a point where the upper first concave portion (511a) and the upper third concave portion (511c) are connected, and the upper first convex portion (511a) is arranged in the longitudinal direction of the guide pad portion; And the upper first convex portion (511a) is arranged at a certain distance from the upper second convex portion (511b), and is arranged at a point where the upper second concave portion (511b) and the upper third concave portion (511c) are connected, and is arranged in the longitudinal direction of the guide pad portion. In addition, the guide pad portion (500') according to the first modification of the first embodiment of the present invention includes: an upper third convex portion (512c) that is arranged adjacent to the upper first concave portion (511a), is arranged at one edge of the guide pad portion in the width direction, and is arranged in the longitudinal direction of the guide pad portion; and an upper fourth convex portion (512d) that is arranged adjacent to the upper second concave portion (511b), is arranged at the other edge of the guide pad portion in the width direction, and is arranged in the longitudinal direction of the guide pad portion.

[0117] At this time, the upper first convex portion (511a) is disposed in a certain area of ​​the upper first convex portion (511a), is disposed in the height direction of the guide pad portion, and includes a first through hole (513a) that penetrates from the upper surface (510a) of the first base plate (510) to the lower surface (510b) of the first base plate (510), and further, the upper second convex portion (511b) is disposed in a certain area of ​​the upper second convex portion (511b), is disposed in the height direction of the guide pad portion, and includes a second through hole (513b) that penetrates from the upper surface (510a) of the first base plate (510) to the lower surface (510b) of the first base plate (510).

[0118] In addition, the upper third convex portion (511c) includes a third through hole (513c) that is disposed in a certain area of ​​the upper third convex portion (511c) in the height direction of the guide pad portion and penetrates from the upper surface (510a) of the first base plate (510) to the lower surface (510b) of the first base plate (510), and further, the upper fourth convex portion (511d) includes a fourth through hole (513d) that is disposed in a certain area of ​​the upper fourth convex portion (511d) in the height direction of the guide pad portion and penetrates from the upper surface (510a) of the first base plate (510) to the lower surface (510b) of the first base plate (510).

[0119] At this time, in the drawing, the number of the first through hole to the fourth through hole is illustrated as 1 each, but the number of the first through hole to the fourth through hole may be configured as plural each.

[0120] As described above, in the present invention, the plug auxiliary body part can be formed by injecting resin into the inside of the mold while the wiring is arranged in the guide pad part.

[0121] At this time, in the present invention, by injecting the resin into the interior of the first through hole to the fourth through hole, the adhesion between the first resin layer and the guide pad portion can be improved.

[0122] Fig. 12 is a schematic perspective view showing a guide pad part according to a second modified example of the first embodiment of the present invention, and Fig. 13 is a schematic front view showing a guide pad part according to a second modified example of the first embodiment of the present invention. Hereinafter, the guide pad part according to the second modified example of the first embodiment of the present invention may refer to the guide pad part according to the first embodiment of the present invention described above and the guide pad part according to the first modified example of the first embodiment of the present invention, except as described below.

[0123] Referring to FIGS. 12 and 13, as described above, a guide pad portion (500'') according to a second modified example of the first embodiment of the present invention includes: a first base plate (510) including an upper surface (510a) and a lower surface (510b) positioned opposite the upper surface; an upper first concave portion (511a) positioned on the upper surface (510a) side of the first base plate (510), positioned on one widthwise side of the guide pad portion, and arranged in the lengthwise direction of the guide pad portion; an upper second concave portion (511b) positioned on the upper surface (510a) side of the first base plate (510), positioned on the other widthwise side of the guide pad portion, and arranged in the lengthwise direction of the guide pad portion; And it includes an upper third concave portion (511c) which is arranged between the upper first concave portion (511a) and the upper second concave portion (511b), and is arranged at a certain interval from the upper first concave portion (511a) and the upper second concave portion (511b), and is arranged in the longitudinal direction of the guide pad portion.

[0124] In addition, referring to FIGS. 12 and 13, as described above, the guide pad portion (500'') according to the second modified example of the first embodiment of the present invention includes a lower first concave portion (514) positioned on the lower surface (510b) side of the first base plate (510) and arranged in the longitudinal direction of the guide pad portion.

[0125] As described above, in the present invention, the plug auxiliary body part can be formed by injecting resin into the inside of the mold while the wiring is arranged in the guide pad part.

[0126] At this time, in the present invention, by injecting the resin into the lower first concave portion, the adhesion between the first resin layer and the guide pad portion can be improved.

[0127] Fig. 14 is a schematic perspective view showing a guide pad part according to a second embodiment of the present invention, Fig. 15 is a schematic perspective view showing a state in which wiring is arranged in a guide pad part according to a second embodiment of the present invention, and Fig. 16 is a schematic front view showing a state in which wiring is arranged in a guide pad part according to a second embodiment of the present invention. Meanwhile, the guide pad part according to the second embodiment of the present invention may refer to the guide pad part according to the first embodiment of the present invention, the guide pad part according to the first modification of the first embodiment of the present invention, and the guide pad part according to the second modification of the first embodiment of the present invention, except as described below.

[0128] First, the guide pad portion according to the second embodiment of the present invention can be defined as follows.

[0129] That is, the guide pad part (600) according to the second embodiment of the present invention includes a longitudinal direction of the guide pad part (X direction in FIG. 14); a width direction of the guide pad part (Y direction in FIG. 14) located on the same plane as the longitudinal direction of the guide pad part; and a height direction of the guide pad part (Z direction in FIG. 14) located on a vertical plane from the longitudinal direction of the guide pad part and the width direction of the guide pad part. At this time, the direction in which the guide pad part is extended long and the wiring is aligned in one direction can be defined as the longitudinal direction of the guide pad part.

[0130] Continuing with reference to FIG. 14, a guide pad portion (600) according to a second embodiment of the present invention includes an upper flat pad portion (610a) positioned above the guide pad portion in the height direction, but arranged in the length direction of the guide pad portion; a lower flat pad portion (610b) positioned facing the upper flat pad portion (610a), positioned below the guide pad portion in the height direction, but arranged in the length direction of the guide pad portion; a first semicircular pad portion (610c) positioned on one side in the width direction of the guide pad portion, one side being arranged continuously with one side of the upper flat pad portion (610a), and the other side being arranged continuously with one side of the lower flat pad portion (610b), being arranged in the length direction of the guide pad portion, and having a semicircular cross-section; And it includes a second side semicircular pad part (610d) which is arranged facing the first side semicircular pad part (610c) and located on the other side in the width direction of the guide pad part, one side of which is arranged continuously with the other side of the upper flat pad part (610a), and the other side of which is arranged continuously with the other side of the lower flat pad part (610b), and which is arranged in the length direction of the guide pad part and has a semicircular cross section.

[0131] In addition, the guide pad portion (600) according to the second embodiment of the present invention includes a first space portion (611) formed by continuously arranging the upper flat pad portion (610a), the first-side semicircular pad portion (610c), the lower flat pad portion (610b), and the second-side semicircular pad portion (610d), and as shown in FIGS. 15 and 16, the first wiring (121a), the second wiring (121b), and the third wiring (121c) as described above can be arranged in the first space portion.

[0132] Meanwhile, in the guide pad part (600) according to the second embodiment of the present invention, since the upper flat pad part (610a), the first-side semicircular pad part (610c), the lower flat pad part (610b), and the second-side semicircular pad part (610d) are arranged continuously, the guide pad part (600) according to the second embodiment of the present invention can be defined as having a cross-section having a circular shape based on the height direction of the guide pad part.

[0133] At this time, in the present invention, the inner surface of the upper flat pad portion (610a), the inner surface of the first-side semicircular pad portion (610c), the inner surface of the lower flat pad portion (610b), and the inner surface of the second-side semicircular pad portion (610d) each include an adhesive portion (not shown), so that when the first wiring (121a), the second wiring (121b), and the third wiring (121c) as described above are arranged in the first space portion, the first wiring (121a), the second wiring (121b), and the third wiring (121c) can be attached to the inner surfaces of the upper flat pad portion (610a), the first-side semicircular pad portion (610c), the lower flat pad portion (610b), and the second-side semicircular pad portion (610d) by the adhesive portion.

[0134] More specifically, when the first wiring (121a) is arranged in the first space, the first wiring can be attached to the inner surface of the first-side semicircular pad portion, and when the second wiring (121b) is arranged in the first space, the second wiring can be attached to the inner surface of the second-side semicircular pad portion, and when the third wiring (121c) is arranged in the first space, the third wiring can be attached to the inner surface of the upper flat pad portion (610a) and the inner surface of the lower flat pad portion (610b).

[0135] Through the structure of the guide pad portion according to the second embodiment of the present invention, the first to third wiring lines as described above can be arranged in one direction.

[0136] At this time, as described above, arranging the first to third wirings in one direction through the structure of the guide pad portion means that the first wiring, the second wiring, and the third wiring are arranged in a straight line based on each cross-section, for example, in the area of ​​the first handle body portion, and the same applies hereinafter.

[0137] Meanwhile, in the structure of the guide pad portion according to the second embodiment of the present invention, as described above, in the present invention, the plug auxiliary body portion can be formed by injecting resin into the inside of the mold while the wiring is arranged in the guide pad portion according to the second embodiment.

[0138] That is, by forming a first resin layer covering the guide pad portion and the first to third wiring while the first to third wiring are guided by the guide pad portion, the plug auxiliary body portion according to the present invention can be formed.

[0139] Fig. 17 is a schematic perspective view illustrating a guide pad part according to a first modified example of a second embodiment of the present invention, and Fig. 18 is a schematic plan view illustrating a guide pad part according to a first modified example of a second embodiment of the present invention. Hereinafter, the guide pad part according to the first modified example of the second embodiment of the present invention may refer to the guide pad part according to the second embodiment of the present invention described above, except as described below.

[0140] Referring to FIGS. 17 and 18, a guide pad part (600') according to a first modified example of the second embodiment of the present invention includes: an upper flat pad part (610a) positioned above the guide pad part in the height direction, but arranged in the length direction of the guide pad part; a lower flat pad part (610b) positioned facing the upper flat pad part (610a), positioned below the guide pad part in the height direction, but arranged in the length direction of the guide pad part; a first semicircular pad part (610c) positioned on one side in the width direction of the guide pad part, one side being arranged continuously with one side of the upper flat pad part (610a), and the other side being arranged continuously with one side of the lower flat pad part (610b), being arranged in the length direction of the guide pad part, and having a semicircular cross-section; And it includes a second side semicircular pad part (610d) which is arranged facing the first side semicircular pad part (610c) and located on the other side in the width direction of the guide pad part, one side of which is arranged continuously with the other side of the upper flat pad part (610a), and the other side of which is arranged continuously with the other side of the lower flat pad part (610b), and which is arranged in the length direction of the guide pad part and has a semicircular cross section.

[0141] In addition, the guide pad portion (600) according to the first modified example of the second embodiment of the present invention includes a first space portion (611) formed by continuously arranging the upper flat pad portion (610a), the first-side semicircular pad portion (610c), the lower flat pad portion (610b), and the second-side semicircular pad portion (610d).

[0142] At this time, referring to FIGS. 17 and 18, the guide pad part (600') according to the first modified example of the second embodiment of the present invention includes a first through hole (611a) arranged in a certain area of ​​the upper flat pad part (610a), but arranged between the area where the first wiring is arranged and the area where the third wiring is arranged; and a second through hole (611b) arranged in a certain area of ​​the upper flat pad part (610a), but arranged between the area where the second wiring is arranged and the area where the third wiring is arranged.

[0143] In addition, although not shown in the drawing, the guide pad part (600') according to the first modified example of the second embodiment of the present invention includes a third through hole (not shown) arranged in a certain area of ​​the lower flat pad part (610b) between the area where the first wiring is arranged and the area where the third wiring is arranged; and a fourth through hole (not shown) arranged in a certain area of ​​the lower flat pad part (610b) between the area where the second wiring is arranged and the area where the third wiring is arranged.

[0144] At this time, in the drawing, the number of the first through hole and the second through hole is shown as 1 each, but the number of the first through hole and the second through hole may be configured as plural each.

[0145] In addition, similarly, the number of the third through hole and the fourth through hole can each be configured as a plurality.

[0146] As described above, in the present invention, the plug auxiliary body part can be formed by injecting resin into the inside of the mold while the wiring is arranged in the guide pad part.

[0147] At this time, in the present invention, by injecting the resin into the interior of the first through hole to the fourth through hole, the adhesion between the first resin layer and the guide pad portion can be improved.

[0148] Furthermore, in the guide pad portion according to the first modified example of the second embodiment of the present invention, the above-described resin is injected into the interior of the first space portion (611) through the first through hole to the fourth through hole, thereby improving the adhesion between the first resin layer and the guide pad portion, and the positions of the first wiring to the third wiring can be fixed through the resin injected into the interior of the first space portion (611).

[0149] As described above, in the case of the Korean Patent Publication No. 10-2022-0015540, since the wiring is aligned through the first protruding pin and the second protruding pin, the first protruding pin and the second protruding pin must be included in the lower mold, and there is a problem that it is somewhat difficult to design the lower mold due to the first protruding pin and the second protruding pin.

[0150] However, in the present invention, by aligning the wiring through the guide pad portion, a flat-type electric plug can be provided that can easily align the first wiring to the third wiring even if the configuration of the protruding pin in the lower mold is excluded.

[0151] FIG. 19 is a perspective view illustrating an electric plug according to another example of the present invention, FIG. 20 is a plan view illustrating an electric plug according to another example of the present invention, and FIG. 21 is a bottom view illustrating an electric plug according to another example of the present invention.

[0152] Referring to FIGS. 19 to 21, an electric plug (1000) according to another example of the present invention includes a plug main body part (1110); a connecting pin part (1120) exposed in a first direction from the plug main body part (1110); a plug auxiliary body part (1130) extending in a second direction from the plug main body part (1110); and a wiring part (1140) arranged continuously with the plug auxiliary body part (1130).

[0153] Meanwhile, an electric plug according to another example of the present invention may be defined as a right-angled plug in which the connecting pin portion (1120) and the wiring portion (1140) are arranged at a right angle. However, the definition of "right-angled" is intended to define the angle formed by the connecting pin portion and the wiring portion, and the angle formed by the connecting pin portion and the wiring portion may be an acute angle or an obtuse angle. Therefore, in the present invention, the "right-angled plug" may be defined as a "non-straight plug."

[0154] That is, assuming that the angle formed by the connecting pin portion (1120) and the wiring portion (1140) of the straight plug is 0 degrees, the right-angled plug according to the present invention is defined as a non-straight plug, so that the angle formed by the connecting pin portion (1120) and the wiring portion (1140) can be a right angle, an acute angle, or an obtuse angle.

[0155] At this time, an electric plug (1000) according to another example of the present invention can be defined as including a plug main body area (A); a connection pin area (B) exposed in a first direction from the plug main body area (A); a plug auxiliary body area (C) extending in a second direction from the plug main body area (A); and a wiring area (D) arranged continuously with the plug auxiliary body area (C).

[0156] In addition, it can be defined that the plug main body part (1110) is located in the plug main body part area (A), the connection pin part (120) is located in the connection pin part area (B), the plug auxiliary body part (130) is located in the plug auxiliary body part area (C), and the wiring part (1140) is located in the wiring part area (D).

[0157] At this time, the present invention is characterized in that the upper surface of the plug main body (1110) and the upper surface of the plug auxiliary body (1130) are positioned on the same plane, and therefore, an electric plug having such a structure can be defined as a flat-type electric plug.

[0158] Continuing with reference to FIGS. 19 to 21, the plug auxiliary body region (C) includes a handle region (C1) that is arranged continuously from the plug main body region (A) and has a first thickness; and a handle support region (C2) that is arranged continuously with the handle region (C1) on one side and continuously with the wiring region (D) on the other side and has a second thickness.

[0159] At this time, the second thickness of the handle support part area (C2) is configured to be thicker than the first thickness of the handle part area (C1), that is, as shown in FIG. 21, the second thickness of the handle support part area (C2) is configured to be thicker than the first thickness of the handle part area (C1), thereby improving the pulling force of the plurality of wires located in the wiring part (140) through the handle support part area (C).

[0160] Meanwhile, it can be defined that a handle part (1130a) is located in the handle part area (C1), and a handle support part (1130b) is located in the handle support part area (C2).

[0161] Accordingly, the plug auxiliary body part can be defined as including a handle part that is arranged continuously from the plug main body part and has a first thickness; and a handle support part that is arranged continuously on one side with the handle part and continuously on the other side with the wiring part and has a second thickness.

[0162] At this time, as described above, in the present invention, the upper surface of the plug main body part (1110) and the upper surface of the plug auxiliary body part (1130) are located on the same plane, and therefore, the upper surface of the plug main body part (1110) and the upper surfaces of the handle part (1130a) and the handle support part (1130b) are located on the same plane, and in the present invention, an electric plug having such a structure can be defined as a flat-type electric plug.

[0163] As described above, conventional right-angled plugs have a structure in which the plug body protrudes outside the outlet when connected to the outlet, which causes a problem in that home appliances or furniture cannot be placed as close to the wall as possible.

[0164] That is because home appliances or furniture cannot be placed as close to the wall as possible to secure space due to the protruding part of the plug body connected to the outlet.

[0165] More specifically, the conventional right-angled plug adopts a structure in which the plug body functions as a handle and the plug body protrudes considerably thickly outward from the outlet to function as a handle, so that home appliances or furniture cannot be placed as close to the wall as possible to secure space due to the protruding portion of the plug body.

[0166] However, in the present invention, the handle portion (1130a) that functions as a handle is extended in the second direction from the plug main body portion (1110), and further, the upper surface of the plug auxiliary body portion (1130) including the handle portion (1130a) is positioned on the same plane as the upper surface of the plug main body portion (1110), thereby minimizing the thickness of the plug main body portion (1110), thereby minimizing the protruding portion of the plug that is connected to an outlet provided on a wall surface, thereby providing a flat type plug that can bring furniture or home appliances in maximum close contact with a wall surface and increase space utilization.

[0167] Meanwhile, the handle portion (1220) has a first thickness, and the handle support portion (1230) has a second thickness, but the second thickness can be defined as being thicker than the first thickness.

[0168] In addition, as illustrated in FIG. 21, the upper surface of the handle portion (1130a) and the upper surface of the handle support portion (1130b) are positioned on the same plane, that is, the upper surface of the handle portion (1130a) and the upper surface of the handle support portion (1130b) are flat, and the lower surface of the handle support portion (1130b) protrudes further downward than the lower surface of the handle portion (1130a), so that the second thickness of the handle support portion (1130b) can be configured to be thicker than the first thickness of the handle portion (1130a).

[0169] Continuing, referring to FIG. 19, the connecting pin portion (1120) includes a first connecting pin portion (1120a) exposed in a first direction from the plug main body portion (1110); and a second connecting pin portion (1120b) exposed in a first direction from the plug main body portion (1110) and positioned at a predetermined distance from the first connecting pin portion (1120a). However, although the number of connecting pin portions is illustrated as two in the drawing, the number of connecting pin portions is not limited in the present invention.

[0170] Meanwhile, although not shown in the drawing, the inside of the main body of the plug may include a grounding portion, and in the case of a general electric plug, it includes a first wiring (not shown) connected to the first connection pin portion (1120a); a second wiring (not shown) connected to the second connection pin portion (1120b); and a third wiring (not shown) connected to the grounding portion. The first to third wirings extend to the wiring portion (1140) and, through the plurality of wirings, can supply power, etc. to an electronic device to which the electric plug is connected.

[0171] At this time, the first wiring, the second wiring, and the third wiring are electrically connected to the first connection pin portion (1120a), the second connection pin portion (1120b), and the ground portion, respectively, in the plug main body portion (1110), and are arranged along the handle portion (1220) and the handle support portion (1230), and then extended to the wiring portion (1140).

[0172] Fig. 22 is a schematic perspective view illustrating a lower mold for manufacturing an electric plug according to another example of the present invention, and Fig. 23 is a schematic side view illustrating a lower mold for manufacturing an electric plug according to another example of the present invention. In this case, the mold for manufacturing an electric plug according to another example of the present invention in Figs. 22 and 23 may refer to the mold of the aforementioned Korean Patent Publication No. 10-2022-0015540, except as described below.

[0173] Meanwhile, the molds of FIGS. 22 and 23 are injection molds, and only the lower mold is shown in the drawings, and the upper mold is omitted. In addition, FIG. 23 includes a guide holder part as described later.

[0174] Referring to FIGS. 22 and 23, a lower mold (4000) (hereinafter referred to as “lower mold”) for manufacturing an electric plug according to another example of the present invention includes a lower mold part (4410) for injection of a plug main body part; and a lower mold part (4420) for injection of a plug auxiliary body part that is arranged continuously with the lower mold part (4410) for injection of the plug main body part.

[0175] That is, the plug main body part described above can be injection-molded in the lower mold part (4410) for injection of the plug main body part, and the plug auxiliary body part described above can be injection-molded in the lower mold part (4420) for injection of the plug auxiliary body part.

[0176] At this time, as illustrated in FIG. 22, the first connecting pin portion and the second connecting pin portion are inserted into the lower mold portion (4410) for injection of the plug main body, and the first wiring (not shown) connected to the first connecting pin portion (1120a); the second wiring (not shown) connected to the second connecting pin portion (not shown); and the third wiring (not shown) connected to the ground portion are aligned to the lower mold portion (4420) for injection of the plug auxiliary body, and the first to third wirings can be arranged to extend to the wiring portion (4140).

[0177] Afterwards, although not shown in the drawing, when the lower mold (4000) and the upper mold (not shown) are combined, resin is injected into the inside of the mold, thereby manufacturing another electric plug according to the present invention.

[0178] Continuing, referring to FIG. 23, a lower mold (4000) according to another example of the present invention includes a guide holder part (5000) arranged on the upper portion of the lower mold part (4420) for injection of the plug auxiliary body part.

[0179] At this time, the guide holder part (5000) is for guiding the first to third wiring in one direction as described above, and it is preferable that the material of the guide pad part is a resin material such as PVC resin, ABS resin, or PC resin.

[0180] Meanwhile, the guide holder part (5000) guides the first to third wirings in one direction as described above, which means that the first wiring, the second wiring, and the third wiring are arranged in a straight line based on their respective cross sections, for example, in the area of ​​the first handle body part, and the same applies hereinafter.

[0181] As described above, according to another example of the present invention, an electric plug can be manufactured by injecting resin into the interior of the mold while the lower mold (4000) and the upper mold (not shown) are combined, and when the electric plug is manufactured by injecting resin into the interior of the mold, in order to improve the adhesion between the guide holder and the resin injected into the interior of the mold, it is preferable that the material of the guide holder is a resin material such as PVC resin, ABS resin, or PC resin.

[0182] Meanwhile, in the drawing, the guide holder part is depicted as being arranged over the entire area of ​​the lower mold part (4420) for injection of the plug auxiliary main body part, based on the longitudinal direction of the lower mold part (4420) for injection of the plug auxiliary main body part. However, since the guide pad part serves to guide the first wiring to the third wiring in one direction, it is natural that the guide pad part can be arranged over a part of the lower mold part (4420) for injection of the plug auxiliary main body part.

[0183] Continuing with reference to FIGS. 22 and 23, as described above, a lower mold (4000) (hereinafter referred to as “lower mold”) for manufacturing an electric plug according to another example of the present invention includes a lower mold part (4410) for injection of a plug main body part; and a lower mold part (4420) for injection of a plug auxiliary body part that is arranged continuously with the lower mold part (4410) for injection of the plug main body part.

[0184] At this time, as shown in the drawing, the lower mold part (4420) for injection of the plug auxiliary body part includes a first protruding pin (4421) located in the first region; and a second protruding pin (4422) located in the second region and spaced apart from the first protruding pin (4422) in the longitudinal direction.

[0185] In addition, the first protruding pin (4421) includes a first-first protruding pin (4421a); ​​a first-second protruding pin (4421b) spaced apart from the first-first protruding pin (4421a) in the width direction, and the second protruding pin (4422) includes a second-first protruding pin (4422a); and a second-second protruding pin (4422b) spaced apart from the second-first protruding pin (4422a) in the width direction.

[0186] Meanwhile, as shown in the drawing, the protruding pin may further include a third protruding pin (4423) positioned between the first protruding pin and the second protruding pin, and at this time, the third protruding pin (4423) may further include a 3-1 protruding pin (4423a); and a 3-2 protruding pin (4423b) positioned spaced apart from the 3-1 protruding pin (4423a) in the width direction. However, in the present invention, the protruding pin may include at least two or more protruding pins (i.e., a first protruding pin and a second protruding pin).

[0187] Meanwhile, the longitudinal direction and the width direction can be defined based on the lower mold part for injection of the plug auxiliary body part.

[0188] In addition, as illustrated in FIG. 23, a lower mold (4000) according to another example of the present invention includes a guide holder part (5000) arranged on the upper portion of the lower mold part (4420) for injection of the plug auxiliary body part, and at this time, the lower surface of the guide holder part (5000) can be supported by the protruding pin.

[0189] For example, one longitudinal side of the guide holder part (5000) may be supported by the first protruding pin (4421, 4421a), the other longitudinal side of the guide holder part (5000) may be supported by the second protruding pin (4422, 4422a), and further, the longitudinal center area of ​​the guide holder part (5000) may be supported by the third protruding pin (4423, 4423a).

[0190] At this time, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder part (5000), the bottom surface of the guide holder part is supported by the protruding pin, and therefore, the bottom surface of the guide holder part can be positioned at a certain distance from the inner surface of the lower mold part (4420) for injection of the plug auxiliary main body part.

[0191] That is, the guide holder part can be positioned so that the lower surface of the guide holder part is spaced apart from the inner surface of the lower mold part (4420) for injection of the plug auxiliary main body part by a certain distance, equal to the height of the protruding pin.

[0192] Continuing with reference to FIGS. 22 and 23, as shown in the drawings, the lower mold part (4420) for injection of the plug auxiliary body part includes a first guide pin (4431) located in a third region; and a second guide pin (4432) located in a fourth region and spaced apart from the first guide pin (4431) in the longitudinal direction.

[0193] In addition, the first guide pin (4431) includes a first-first guide pin (4431a); a first-second guide pin (4431b) spaced apart from the first-first guide pin (4431a) in the width direction, and the second guide pin (4432) includes a second-first guide pin (4432a); and a second-second guide pin (4432b) spaced apart from the second-first guide pin (4422a) in the width direction.

[0194] At this time, the spacing between the 1-1 guide pin (4431a) and the 1-2 guide pin (4431b) and the spacing between the 2-1 guide pin (4432a) and the 2-2 guide pin (4432b) may be spaced apart greater than the spacing between the 1-1 protruding pin (4421a) and the 1-2 protruding pin (4421b), but the present invention does not limit the numerical values ​​of these spacings.

[0195] In addition, in the present invention, as will be described later, in order for the widthwise side of the guide holder portion to be supported by the guide pin, it is preferable that the height of the guide pin be formed higher than the height of the protruding pin.

[0196] Meanwhile, in the drawing, the first guide pin and the second guide pin are shown as being arranged in the area between the first protruding pin and the second protruding pin, but the arrangement relationship between the guide pin and the protruding pin is not limited in the present invention.

[0197] At this time, as shown in the drawing, the guide holder part (5000) can have its width-wise side supported by the first guide pin and the second guide pin.

[0198] More specifically, one width-wise side of the longitudinal front of the guide holder part is supported by the 1-1 guide pin (4431a), the other width-wise side of the longitudinal front of the guide holder part is supported by the 1-2 guide pin (4431b), one width-wise side of the longitudinal rear of the guide holder part is supported by the 2-1 guide pin (4432a), and the other width-wise side of the longitudinal rear of the guide holder part can be supported by the 2-2 guide pin (4432b).

[0199] That is, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder portion (5000), the bottom surface of the guide holder portion is supported by the protruding pin, and further, the side surface of the guide holder portion is supported by the first guide pin and the second guide pin, thereby preventing the guide holder portion from being separated in the width direction of the lower mold.

[0200] Meanwhile, as described above, when the lower mold (4000) and the upper mold (not shown) are combined, the electric plug according to the present invention can be manufactured by injecting resin into the inside of the mold. However, the resin is not injected into the areas where the first protruding pin (4421), the second protruding pin (4422), and the third protruding pin (4423) are located. Therefore, as described later, a first lower groove portion is formed in the electric plug in an area corresponding to the areas where the first protruding pin (4421), the second protruding pin (4422), and the third protruding pin (4423) are located, as described later.

[0201] In addition, when the lower mold (4000) and the upper mold (not shown) are combined, and resin is injected into the interior of the mold, when the electric plug according to the present invention is manufactured, resin is not injected into the area where the first guide pin (4431) and the second guide pin (4432) are located, and therefore, as will be described later, a second groove portion is formed on the lower surface of the electric plug in the area corresponding to the area where the first guide pin (4431) and the second guide pin (4432) are located, as will be described later.

[0202] Meanwhile, although not shown in the drawing, the upper mold may further include a protruding pin for supporting the upper surface of the guide holder portion, similarly to the lower mold. In this case, the protruding pins included in the lower mold may be defined as a lower first protruding pin, a lower second protruding pin, and a lower third protruding pin, and the protruding pins included in the upper mold may be defined as an upper first protruding pin, an upper second protruding pin, and an upper third protruding pin.

[0203] At this time, in addition, when the lower mold (4000) and the upper mold (not shown) are combined, resin is injected into the inside of the mold, so that when the electric plug according to the present invention is manufactured, resin is not injected into the areas where the upper first protruding pin (not shown), the upper second protruding pin (not shown), and the upper third protruding pin (not shown) are located, and therefore, as will be described later, an upper surface first groove portion is formed in the electric plug in an area corresponding to the areas where the upper first protruding pin (not shown), the upper second protruding pin (not shown), and the upper third protruding pin (not shown), which will be described later.

[0204] Meanwhile, in the present invention, when including a protruding pin in the upper mold, it can be understood that the upper first protruding pin is arranged in an area corresponding to the lower first protruding pin, the upper second protruding pin is arranged in an area corresponding to the lower second protruding pin, and the upper third protruding pin is arranged in an area corresponding to the lower third protruding pin.

[0205] Hereinafter, a guide holder part according to another example of the present invention will be described in more detail.

[0206] FIG. 24 is a schematic perspective view showing a guide holder part according to another example of the present invention, FIG. 25 is a schematic front view showing a guide holder part according to another example of the present invention, and FIG. 26 is a schematic perspective view showing a state in which a first wiring, a second wiring, and a third wiring are inserted into a space of a guide holder part according to the present invention.

[0207] First, referring to FIGS. 24 and 25, a guide holder part (5000) according to another example of the present invention includes an upper support plate (5510) that is arranged long in the longitudinal direction; a lower support plate (5520) that is arranged at a predetermined height distance from the upper support plate (5510), is located in a region corresponding to the upper support plate, and is arranged long in the longitudinal direction; and a side support plate (5530) that is connected to one end in the width direction of the upper support plate and one end in the width direction of the lower support plate, and is arranged long in the longitudinal direction.

[0208] More specifically, one end in the width direction of the side support plate is positioned continuously with one end in the width direction of the upper support plate, and the other end in the width direction of the side support plate is positioned continuously with one end in the width direction of the lower support plate, and the upper support plate, the lower support plate, and the side support plate are arranged lengthwise, so that the guide holder according to the present invention can be understood to have an approximately “ㄷ” shaped cross-sectional structure.

[0209] Meanwhile, a guide holder part according to another example of the present invention includes a space part (5540) formed by a height-wise gap between the upper support plate (5510) and the lower support plate (5520), and as illustrated in FIG. 26, a first wiring (121a), a second wiring (121b), and a third wiring (121c) are inserted into the space part (540), thereby enabling the first wiring, the second wiring, and the third wiring to be aligned in the longitudinal direction through the guide holder part.

[0210] At this time, as described above, the guide holder part according to another example of the present invention can be understood to have a cross-sectional structure roughly in the shape of the letter “ㄷ”, which can be defined as an open end region of the widthwise other side of the upper support plate and an open end region of the widthwise other side of the lower support plate.

[0211] Therefore, in the present invention, the first wiring, the second wiring, and the third wiring can be inserted into the space (5540) of the guide holder portion through the open area of ​​the widthwise other end area of ​​the upper support plate and the widthwise other end area of ​​the lower support plate.

[0212] As described above, in the present invention, the first to third wiring lines as described above can be arranged in one direction through the guide holder part.

[0213] As described above, in the case of the Korean Patent Publication No. 10-2022-0015540, since the wiring is aligned through the first protruding pin and the second protruding pin as described above, the first protruding pin and the second protruding pin must be necessarily included in the lower mold, and there is a problem that it is somewhat difficult to align the wiring between the first protruding pin and the second protruding pin.

[0214] However, in the present invention, a flat-type electric plug can be provided that can easily align the first to third wiring by aligning the wiring through a guide holder portion.

[0215] Accordingly, an electric plug according to another example of the present invention can be defined as follows.

[0216] First, referring to the above-described FIGS. 19 to 21, an electric plug (1000) according to another example of the present invention includes a plug main body part (1110); a connecting pin part (1120) exposed in a first direction from the plug main body part (1110); a plug auxiliary body part (1130) extending in a second direction from the plug main body part (1110); and a wiring part (1140) arranged continuously with the plug auxiliary body part (1130).

[0217] In addition, the connecting pin portion (1120) includes a first connecting pin portion (1120a) exposed in a first direction from the plug main body portion (1110); and a second connecting pin portion (1120b) exposed in a first direction from the plug main body portion (1110) and positioned at a predetermined distance from the first connecting pin portion (1120a). In addition, the plug main body portion includes a ground portion inside.

[0218] Also, referring to FIG. 26, the electric plug includes a first wiring (1121a) connected to the first connection pin portion (120a); a second wiring (1121b) connected to the second connection pin portion (1120b); and a third wiring (1121c) connected to the ground portion.

[0219] At this time, as illustrated in FIG. 26, the plug auxiliary body part (1130) of the electric plug (1000) according to another example of the present invention includes a guide holder part (5000) that is arranged inside the plug auxiliary body part and guides the first to third wiring in one direction, and includes a space part into which the first to third wiring is inserted.

[0220] Meanwhile, as described above, when the lower mold (4000) and the upper mold (not shown) are combined, the electric plug according to the present invention can be manufactured by injecting resin into the inside of the mold. A first groove is formed on the lower surface of the electric plug in an area corresponding to the area where the lower first protruding pin (4421), the lower second protruding pin (4422), and the lower third protruding pin (4423) are located, and a second groove is formed on the lower surface of the electric plug in an area corresponding to the area where the first guide pin (4431) and the second guide pin (4432) are located, and a first groove is formed on the upper surface of the electric plug in an area corresponding to the area where the upper first protruding pin (not shown), the upper second protruding pin (not shown), and the upper third protruding pin (not shown) are located.

[0221] More specifically, the plug auxiliary body part (1130) includes a lower first groove part located in a first region of the lower portion of the plug auxiliary body part, wherein the lower first groove part includes a lower first groove part (1210) located in a region corresponding to the lower first protruding pin; a lower first-second groove part (1220) located in a region corresponding to the lower second protruding pin; and a lower first-third groove part (1230) located in a region corresponding to the lower third protruding pin.

[0222] In addition, the plug auxiliary body part (1130) includes a lower second groove part located in a second region of the lower portion of the plug auxiliary body part, wherein the lower second groove part includes a lower second-first groove part (1310) located in a region corresponding to the first guide pin; and a lower second-second groove part (1320) located in a region corresponding to the second guide pin.

[0223] In addition, the plug auxiliary body part (1130) includes an upper surface groove part located in a first region of the upper portion of the plug auxiliary body part, wherein the upper surface groove part includes a first upper surface groove part (1610) located in a region corresponding to the upper first protruding pin; a second upper surface groove part (1620) located in a region corresponding to the upper second protruding pin; and a third upper surface groove part (1630) located in a region corresponding to the upper third protruding pin.

[0224] More specifically, the lower first-first groove (1210) includes a lower first-first groove (1210a) located in an area corresponding to the lower first-first protruding pin; and a lower first-second groove (1210b) located in an area corresponding to the lower first-second protruding pin; the lower first-second groove (1220) includes a lower first-second-first groove (1220a) located in an area corresponding to the lower second-first protruding pin; and a lower first-second-second groove (1220b) located in an area corresponding to the lower second-second protruding pin; and the lower first-third groove (1230) includes a lower first-third-first groove (1230a) located in an area corresponding to the lower third-first protruding pin; And it includes a lower 1-3-2 groove (1230b) located in an area corresponding to the lower 3-2 protruding pin.

[0225] In addition, the second-first groove (1310) includes a second-first groove (1310a) located in an area corresponding to the first-first guide pin; and a second-first-second groove (1310b) located in an area corresponding to the first-second guide pin, and the second-second groove (1320) includes a second-second-first groove (1320a) located in an area corresponding to the second-first guide pin; and a second-second-second groove (1320b) located in an area corresponding to the second-second guide pin.

[0226] In addition, the upper first groove (1610) includes an upper first-first groove (1610a) located in an area corresponding to the upper first-first protruding pin; and an upper first-second groove (1610b) located in an area corresponding to the upper first-second protruding pin; the upper second groove (1620) includes an upper second-first groove (1620a) located in an area corresponding to the upper second-first protruding pin; and an upper second-second groove (1620b) located in an area corresponding to the upper second-second protruding pin; and the upper third groove (1630) includes an upper third-first groove (1630a) located in an area corresponding to the upper third-first protruding pin; and an upper third-second groove (1630b) located in an area corresponding to the upper third-second protruding pin.

[0227] At this time, the depth of the second groove can be understood to be deeper than the depth of the first groove, and the first groove can be understood to be arranged in an area corresponding to the upper groove.

[0228] As described above, a flat-type electric plug can be provided that can easily align the first to third wiring by aligning the wiring through the guide holder portion.

[0229] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder part (5000), the bottom surface of the guide holder part is supported by the lower protruding pin, and therefore, the bottom surface of the guide holder part can be arranged at a certain distance from the inner surface of the lower mold part (4420) for injection of the plug auxiliary main body part.

[0230] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder part (5000), the upper surface of the guide holder part is supported by the upper protruding pin, and therefore, the upper surface of the guide holder part can be positioned at a certain distance from the inner surface of the upper mold part (not shown) for injection of the plug auxiliary main body part.

[0231] In addition, in the present invention, when the first wiring; the second wiring; and the third wiring are inserted into the guide holder portion (5000), the bottom surface of the guide holder portion is supported by the protruding pin, and further, the side surface of the guide holder portion is supported by the first guide pin and the second guide pin, thereby preventing the guide holder portion from being separated in the width direction of the lower mold.

Claims

1. For electric plugs, The electric plug comprises: a plug main body; a connecting pin portion exposed in a first direction from the plug main body; a plug auxiliary body portion extending in a second direction from the plug main body; and a wiring portion arranged continuously with the plug auxiliary body portion. The above connecting pin portion includes a first connecting pin portion exposed in a first direction from the plug main body portion; and a second connecting pin portion exposed in a first direction from the plug main body portion and arranged at a predetermined distance from the first connecting pin portion, and further includes a ground portion inside the plug main body portion. The electric plug includes a first wire connected to the first connection pin portion; a second wire connected to the second connection pin portion; and a third wire connected to the ground portion. An electric plug comprising: a plug auxiliary body portion; a guide pad portion for guiding the first wiring, the second wiring, and the third wiring in one direction; and a first resin layer covering the guide pad portion, the first wiring, the second wiring, and the third wiring.

2. In paragraph 1, The guide pad portion includes a first base plate including an upper surface and a lower surface positioned opposite the upper surface; an upper first concave portion positioned on the upper surface side of the first base plate, at one side in the width direction of the guide pad portion, and arranged in the length direction of the guide pad portion; an upper second concave portion positioned on the upper surface side of the first base plate, at the other side in the width direction of the guide pad portion, and arranged in the length direction of the guide pad portion; and an upper third concave portion positioned between the upper first concave portion and the upper second concave portion, spaced apart from the upper first concave portion and the upper second concave portion by a predetermined distance, and arranged in the length direction of the guide pad portion. An electric plug characterized in that the first wiring is arranged and guided in the first upper concave portion, the second wiring is arranged and guided in the second upper concave portion, and the third wiring is arranged and guided in the third upper concave portion.

3. In paragraph 2, An electric plug comprising: an upper first convex portion disposed at a point where the upper first concave portion and the upper third concave portion are connected, and disposed in the longitudinal direction of the guide pad portion; an upper second convex portion disposed at a point where the upper second concave portion and the upper third concave portion are connected, and disposed in the longitudinal direction of the guide pad portion; an upper third convex portion disposed adjacent to the upper first concave portion, disposed at one edge of the guide pad portion in the width direction, and disposed in the longitudinal direction of the guide pad portion; and an upper fourth convex portion disposed adjacent to the upper second concave portion, disposed at the other edge of the guide pad portion in the width direction, and disposed in the longitudinal direction of the guide pad portion.

4. In paragraph 3, The upper first convex portion is disposed in a certain region of the upper first convex portion, and is disposed in the height direction of the guide pad portion, and includes a first through hole penetrating from the upper surface of the first base plate to the lower surface of the first base plate, and further, the upper second convex portion is disposed in a certain region of the upper second convex portion, and is disposed in the height direction of the guide pad portion, and includes a second through hole penetrating from the upper surface of the first base plate to the lower surface of the first base plate (510), and further, the upper third convex portion is disposed in a certain region of the upper third convex portion, and is disposed in the height direction of the guide pad portion, and includes a third through hole penetrating from the upper surface of the first base plate to the lower surface of the first base plate, and further, the upper fourth convex portion is disposed in a certain region of the upper fourth convex portion, and is disposed in the height direction of the guide pad portion, and penetrating from the upper surface of the first base plate to the lower surface of the first base plate. An electrical plug including a fourth penetration hole.

5. In paragraph 3, An electric plug, wherein the guide pad portion is located on the lower surface side of the first base plate, and further includes a lower first concave portion arranged in the longitudinal direction of the guide pad portion.

6. In paragraph 1, The guide pad part includes an upper flat pad part positioned above the guide pad part in the height direction and arranged in the length direction of the guide pad part; a lower flat pad part positioned facing the upper flat pad part and positioned below the guide pad part in the height direction and arranged in the length direction of the guide pad part; a first semicircular pad part positioned on one side in the width direction of the guide pad part, one side being arranged continuously with one side of the upper flat pad part and the other side being arranged continuously with one side of the lower flat pad part, being arranged in the length direction of the guide pad part, and having a semicircular cross-section; and a second semicircular pad part positioned facing the first semicircular pad part and located on the other side in the width direction of the guide pad part, one side being arranged continuously with the other side of the upper flat pad part and the other side being arranged continuously with the other side of the lower flat pad part, being arranged in the length direction of the guide pad part, and having a semicircular cross-section. The above guide pad portion includes a first space portion formed by continuously arranging the upper flat pad portion, the first-side semicircular pad portion, the lower flat pad portion, and the second-side semicircular pad portion, An electric plug characterized in that the first wiring, the second wiring, and the third wiring are arranged in the first space.

7. In paragraph 6, The inner surface of the upper flat pad portion, the inner surface of the first semicircular pad portion, the inner surface of the lower flat pad portion, and the inner surface of the second semicircular pad portion each include an adhesive portion, An electric plug characterized in that, in the first space portion, the first wiring, the second wiring, and the third wiring are arranged, the first wiring, the second wiring, and the third wiring are attached to the inner surfaces of the upper flat pad portion, the first-side semicircular pad portion, the lower flat pad portion, and the second-side semicircular pad portion by the adhesive portion.

8. In paragraph 7, An electric plug characterized in that the first wiring is attached to the inner surface of the first-side semicircular pad portion, the second wiring is attached to the inner surface of the second-side semicircular pad portion, and the third wiring is attached to the inner surface of the upper flat pad portion and the inner surface of the lower flat pad portion.

9. In paragraph 1, An electric plug characterized in that the material of the first resin layer is PVC resin, ABS resin or PC resin, and the material of the guide pad part is PVC resin, ABS resin or PC resin.

10. For electric plugs, The electric plug comprises: a plug main body; a connecting pin portion exposed in a first direction from the plug main body; a plug auxiliary body portion extending in a second direction from the plug main body; and a wiring portion arranged continuously with the plug auxiliary body portion. The above connecting pin portion includes a first connecting pin portion exposed in a first direction from the plug main body portion; and a second connecting pin portion exposed in a first direction from the plug main body portion and arranged at a predetermined distance from the first connecting pin portion, and further includes a ground portion inside the plug main body portion. The electric plug includes a first wire connected to the first connection pin portion; a second wire connected to the second connection pin portion; and a third wire connected to the ground portion. An electric plug including a guide holder portion, wherein the plug auxiliary body portion is arranged inside the plug auxiliary body portion and guides the first to third wiring in one direction, and includes a space portion into which the first to third wiring are inserted.

11. In paragraph 10, An electric plug comprising: an upper support plate arranged longitudinally long; a lower support plate arranged at a predetermined height distance from the upper support plate, positioned in a region corresponding to the upper support plate, and arranged longitudinally long; and a side support plate connected to one widthwise end of the upper support plate and one widthwise end of the lower support plate, the side support plate being arranged longitudinally long.

12. In paragraph 11, An electric plug characterized in that one widthwise end of the side support plate is positioned continuously with one widthwise end of the upper support plate, and the other widthwise end of the side support plate is positioned continuously with one widthwise end of the lower support plate, and the upper support plate, the lower support plate, and the side support plate are arranged lengthwise, so that the guide holder portion has a “ㄷ” shaped cross-sectional structure.

13. In paragraph 12, An electric plug including the above guide holder portion, the space portion formed by the height-wise gap between the upper support plate and the lower support plate.

14. In paragraph 10, An electric plug, wherein the plug auxiliary main body part comprises a first lower groove part located in a first region of a lower portion of the plug auxiliary main body part, wherein the first lower groove part comprises a first lower groove part located at one longitudinal end of the plug auxiliary main body part; and a first lower groove part located at the other longitudinal end of the plug auxiliary main body part and spaced apart from the first lower groove part.

15. In paragraph 14, An electric plug, wherein the plug auxiliary main body includes a lower second groove portion located in a second region of a lower portion of the plug auxiliary main body, wherein the lower second groove portion includes a lower second-first groove portion located between the lower first-first groove portion and the lower first-second groove portion, but located on one side in the longitudinal direction of the plug auxiliary main body; and a lower second-second groove portion located at a predetermined distance from the lower second-first groove portion and between the lower first-first groove portion and the lower first-second groove portion, but located on the other side in the longitudinal direction of the plug auxiliary main body.

16. In paragraph 15, An electric plug, wherein the plug auxiliary main body part includes an upper surface groove part located in a first region of an upper portion of the plug auxiliary main body part, wherein the upper surface groove part includes a first upper surface groove part located at one longitudinal end of the plug auxiliary main body part; and a second upper surface groove part located at the other longitudinal end of the plug auxiliary main body part and spaced apart from the first upper surface groove part.

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