KR20190110401A - Micro USB Connector Plug - Google Patents

Abstract

According to the present invention, a micro USB connector plug (100) is selectively connected to electronic equipment and selectively connected to a socket connection portion of a micro USB connector socket provided in the electronic equipment to input or output data or charge the electronic equipment. According to the micro USB connector plug, a separate PCB is not needed when connecting a connection terminal and a wire.

Description

Micro USB Connector Plug

The present invention relates to a micro USB connector plug, and more particularly, to a micro USB connector plug which enables the soldering of the wire core of the wire and the micro USB connector plug directly.

In general, the micro USB connector plug is used to input and output data to and from electronic equipment including a mobile terminal such as a mobile phone by using a USB, and is connected to a micro USB connector socket provided for input and output of data to the portable terminal. Is to use.

Here, the micro USB connector socket provided in the electronic equipment, such as a mobile terminal such as a mobile phone is usually composed of a socket mold with a socket connection is formed protruding, and a socket housing coupled to surround the socket mold, a plurality of on the outer surface of the socket connection portion Socket connection terminals are formed.

The conventional micro USB connector plug used to be connected to the micro USB connector socket is composed of a plug mold with a plug connection part protruding, and a metal shell coupled to surround the plug connection part of the plug mold. At the front end of the connecting portion, a plurality of plug connecting terminals are embedded in the plug mold such that a plug connecting terminal formed in front of the plug connecting terminal in contact with the socket connecting terminal of the micro USB connector socket is exposed.

In addition, in the conventional micro USB connector plug as described above, after soldering a PCB substrate having a predetermined circuit structure provided at the rear of the plug connection terminal, a plurality of wires are inserted into the solder pad of the PCB from the rear to insert the PCB. It was provided with the structure soldered to the solder pad of the.

At this time, the plurality of wires to be soldered to the solder pad is made of a configuration in which the exposed wire core portion is soldered to the solder pad on the PCB by peeling the coating.

The conventional micro USB connector plug as described above has a PCB board as an intermediate medium for connecting the plug connection terminal and the wire, solders the PCB board to the plug, and then solders the wire to the solder pad on the PCB board. There was a complicated problem.

In addition, when soldering and connecting a wire core to a solder pad surface, the height difference between the coating of the wire and the wire core without such a coating causes the wire core to be bent sharply and to be soldered to the solder pad surface. There was a problem that the bond rigidity is lowered.

In addition, in order to ensure that the soldering work is performed by aligning a plurality of wire cores to be soldered to the solder pads of the PCB, there is an inconvenience in the work of the soldering worker having to correct the position of the wire cores manually. .

In order to solve the problems as described above, an object of the present invention is to provide a USB solder plug of the direct solder connection method does not require a separate PCB when connecting the USB plug and wire.

In addition, an object of the present invention is to provide a USB connector plug with improved bonding strength when soldering the wire and the USB connector plug.

It is also an object of the present invention to provide a USB connector plug which allows an operator to easily align the soldering position of the wire when soldering the wire to the USB connector plug.

The present invention for achieving the above object is as follows. That is, the micro USB connector plug according to the present invention, the micro-USB is selectively connected to the electronic equipment, and selectively connected to the socket connection portion of the micro USB connector socket provided in the electronic equipment, and used to input / output data or charge the electronic equipment. A plug mold including a plug connector (114) for selectively connecting and connecting a socket connection of the micro USB connector socket (100), and a metal shell (112) wrapped around the plug connector (114). Assembly 110; A mold body part 120 disposed behind the plug connection part 114; And a plurality of plug connection ends 131d, 132d, 133d, 134d, 135d, 136d, 139a, and 139b inserted into and fixed from the rear of the plug connection part 114, protruding to the plug mold assembly 110, and protruding toward the front side. A plug connection terminal group 130 including plug connection terminals 131, 132, 133, 134, 135, 136, and 139, each of which is formed at a rear end of at least a portion of the plug connection terminals, A plug connection terminal group 130 having wire contact ends 131a, 132a, 133a, 134a, and 135a exposed upwardly from 120, wherein the mold body 120 is connected to the wire contact end. Guide protrusions 126 are respectively provided to define corresponding wire seating portions 127a, 127b, 127c, 127d, and 127e.

Here, the micro USB connector plug according to an embodiment of the present invention is at least one intaglio formed on the surface of each of the wire contact end (131a, 132a, 133a, 134a, 135a) inclined to cross the extension direction of the wire contact end; And further include grooves 131b, 132b, 133b, 134b, 135b.

In the micro-USB connector plug according to an embodiment of the present invention, the plug connection end has a flat surface extending in the vertical direction, and the wire contact end has a flat surface extending in the horizontal direction.

Here, the plug connection terminal group 130 includes a pair of grounding plug connection terminals 135 and 136 disposed on the outermost side of the plug connection terminals of the plug connection terminal group, and a pair of grounding plugs. One of the grounding plug connection terminals 135 of the connection terminals 135 and 136 includes a wire contacting end 135a, but the other grounding plug connection terminal 136 does not include the wire contacting end.

In the micro-USB connector plug according to an embodiment of the present invention, the pair of grounding plug connection terminals 135 and 136 extend upward and bend in an inclined elastic ground end 135e to be elastically deformed to face each other. 136e) further.

Here, the width of the pair of wire seating portions 127a and 127e disposed at the outermost side of the wire seating portions 127a, 127b, 127c, 127d, and 127e is the width of the remaining wire seating portions 127b, 127c, and 127d. Is formed larger.

In addition, the wire seating portions 127a, 127b, 127c, 127d, and 127e respectively have seating stepped surfaces 123a, 123b, 123c, 123d, and 123e protruding from the bottom surface of the wire seating portion.

On the other hand, the sum of the height t1 of the seating step step surface and the height t2 of the end surfaces 131c, 132c, 133c, 134c, and 135c of the wire contact end surround the wire core connected to the wire contact end. Is formed above the coating thickness of the wire coating portion.

Referring to the effect of the micro USB connector plug according to the present invention.

First, according to the micro USB connector plug according to the present invention, there is an advantage that does not need to provide a separate PCB in connecting the connection terminal and the wire.

Secondly, according to the micro USB connector plug of the present invention, the soldering position can be easily and accurately aligned by the guide protrusion for guiding the position where the wire strand is placed in the soldering operation of the connector plug, and the wire is connected to the connector plug. Even in the state, the connection can be maintained firmly by the guide despite the movement of the wire.

Third, according to the micro-USB connector plug of the present invention, a wire core is provided by providing a step portion for compensating the thickness between the wire contact end where the wire core is brazed and the coating portion surrounding the wire core despite the difference in thickness between the wire coating and the wire core. The abrupt satisfaction of can reduce the bond strength.

Fourth, according to the micro-USB connector plug of the present invention, a concave groove is formed on the surface of the wire contact end of the plug connection terminal to which the wire core is soldered to each other so that the coupling force between the wire and the plug connection terminal is formed. Will be increased.

Fifth, according to the micro-USB connector plug of the present invention, since a wire contact end is formed at a rear part of only a plurality of plug connection terminals, a few wires are inserted into the connection caps and electrically soldered directly to the plug connection terminals. By applying the number of to implement a few direct solder connection structure can simplify the connection structure between the plug connection terminal and the wire to improve the assembly.

Sixth, according to the micro USB connector plug of the present invention, the wire contact end of the connecting terminal arranged in the outer side of the plug connecting terminal to be connected to the wire can be connected to the wire core of the large diameter by making the width larger, Resistance to acting bending moments is improved.

1 is an exploded perspective view showing a micro USB connector plug according to an embodiment of the present invention.
2 is a perspective view of a plug connection terminal group of a micro USB connector plug according to an embodiment of the present invention.
3 is a partial explanatory diagram of a part of the plug connection terminal group of FIG. 2.
4 is a plan view of a partially assembled state of the micro USB connector plug of FIG.
5 is a perspective view of a state in which the micro USB connector plug of FIG. 1 is fully assembled.
FIG. 6 is a partially enlarged view of the micro USB connector plug of FIG. 5.
FIG. 7 is a view of the micro USB connector plug of FIG. 5 seen in an end direction. FIG.
8 is a perspective view illustrating a state in which a wire is coupled to a micro USB connector plug according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following description and the annexed drawings are for understanding the operation according to the present invention, and a part that can be easily implemented by those skilled in the art may be omitted.

In addition, the specification and drawings are not provided to limit the invention, the scope of the invention should be defined by the claims. Terms used in the present specification should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention so as to best express the present invention.

As shown in Figures 1 to 8, the micro USB connector plug 100 according to a preferred embodiment of the present invention is selectively connected to electronic equipment, such as a portable terminal, a notebook computer, the micro-USB connector socket (not shown) It is a connector plug selectively connected to the socket connection portion (not shown) of the c), and used to input / output data or charge the terminal.

Here, although not shown in the drawings, the micro USB connector socket (not shown) is provided so that the socket connection terminal (not shown) is exposed up and down inside a typical socket housing (not shown) provided in electronic equipment such as a mobile phone. It is configured to include a socket connection portion (not shown).

Referring to FIG. 1, the micro USB connector plug 100 according to the present invention, which is selectively connected and connected to the socket connection portion (not shown) of the conventional micro USB connector socket (not shown), is broadly classified into a metal shell. And a plug mold assembly 110 including a 112 and a plug connection 114, a mold body 120, and a plug connection terminal group 130.

In this case, the plug mold assembly 110 has a plug connection portion 114 to which the socket connection portion (not shown) of the micro USB connector socket (not shown) is selectively connected and protrudes toward the front of the mold body portion 120. The mold body 120 has a structure in which a fastening show rate 124s of a fastening extension end 124p is inserted into and fastened to the fastening groove 115 of the plug connection part 114.

In addition, the metal shell 112 is connected to the plug connection part 114 by the coupling of the coupling hole 116 (FIG. 5) formed in the metal shell 112 and the coupling protrusion 118 formed in the plug connection part 114. Tightly fixed. The metal shell 112 is coupled to surround the plug connection 114 of the plug mold assembly 110.

In addition, the rear of the plug connecting portion 114 of the plug mold assembly 110 may be in close contact with both sides of the socket connecting portion (not shown) of the micro USB connector socket (not shown) to restrain the socket connecting portion (not shown). A pair of latches 117 are inserted and fixed from both sides.

Meanwhile, the plug connection terminal group 130 includes a plurality of plug connection terminals 131, 132, 133, 134, 135, 136, and 139, and a mold body part which is fastened to the plug mold assembly 110. 120 is inserted into and fixed to the plug mold assembly 110.

Referring to FIG. 2, the plug connection terminals 131, 132, 133, 134, 135, 136, and 139 are spaced apart from the upper or lower side of the front end or a pair of upper and lower ends, and protrude toward the front side. 132d, 133d, 134d, 135d, 136d, 139a, and 139b.

At least a portion of the rear end of the plug connection terminal is exposed upward from the mold body 120, and for example, wire contact ends 131a, 132a, 133a, 134a, and 135a made of a conductive material such as metal are provided. do.

As shown in Figures 2 and 3, the plug connection terminal group 130 is applied to the ground, but the grounding plug connection terminals 135 and 136 are provided in a pair opposite to the width direction on the outermost side, Integrated power plug connection terminals 139 having power plug connection terminals 139a and 139b connected by connecting pieces 139c and spaced apart at predetermined intervals, and the width of the ground plug connection terminals 135 and 136. The inner side of the integrated power plug connection terminal 139 is disposed in the width direction outside of the integrated power plug connection terminal 139 by an elastic contact and is connected to the plug connection terminal 139b of the integrated power plug connection terminal 139 for a power supply; It includes a plug connection terminal 131 for the power supply.

In addition, the plug connection terminal group 130 is disposed on one side in the width direction of the plug connection terminal 131 for power applied to the dummy plug connection terminal 137, a grounding plug applied for a dummy (dummy) Arranged in pairs between the connecting terminal 134 for discriminating the connection, which is arranged on one side of the connecting terminal 135, and the connecting direction of the plug, and the power supply plug connecting terminal 131 and the connecting terminal for connecting the connection 134. And a first data plug connection terminal 132 and a second data plug connection terminal 133 to be applied for data.

Referring to the pin map of the plug connection terminal, as shown in FIG. 2, one of the grounding plug connection terminals 135 disposed on one side of the grounding plug connection terminals 135 and 136 is a wire contact terminal 135a. ), But the remaining ground plug connection terminal 136 is formed short without the wire crimping end, and thus does not extend under the wire cap 124 (FIG. 5).

The power supply plug connection terminal 131 is formed with a wire contact end 131a and extends under the wire connection cap 124 (FIG. 5) to be exposed.

The dummy plug connection terminal 137 is also formed short without a wire contact end, and thus does not extend under the wire connection cap 124.

The plug discrimination terminal 134 for connection is provided with a wire contact end 134a to extend under the wire connecting cap 124 to be exposed.

The data plug connection terminals 132 and 133 have wire contact ends 132a and 133a, respectively, and extend under the wire connection cap 124 to be exposed.

The first data plug connection terminal 132 and the second data plug connection terminal between the width direction of the plug connection terminals 139a and 139b extending in parallel from the connecting piece 139c of the integrated power plug connection terminal 139. 133 and the plug connection terminal 134 for connecting outlets are extended.

In the micro USB connector plug 100 according to the present invention as described above, in particular, a pair of grounding plug connections disposed on the outermost side of the plug connection terminals 131, 132, 133, 134, 135, 136, and 139. The terminals 135 and 136 extend upward and bend inclined so as to be elastically deformed to face each other, and have elastic ground ends 135e and 136e, respectively.

The elastic ground ends 135e and 136e as described above are contact pins 119 disposed on both sides of the upper rear end of the metal shell 140 which are coupled to surround the plug connection 114 of the plug mold assembly 110. ) And elastic contact.

That is, the elastic ground terminals 135e and 136e are provided to elastically contact both sides of the upper rear end of the metal shell 112, so that the connection terminal and the metal by the breakdown voltage when connecting to the micro USB connector socket (not shown). Short circuits between metal shells can be prevented, and safety circuits and parts can be prevented by preventing short circuits.

Furthermore, the plug connection terminals 131, 132, 133, 134, 135, 136, and 139 as described above may be inserted into the plug connection part 114 and the mold body part 120 of the plug mold assembly 110. Inserted and fixed in a plurality of intervals in the width direction of the plug mold assembly 110, and is arranged in a plurality, each of the wire contact ends 131a, 132a, arranged in the width direction of the plug mold assembly 110, The widths of the 133a, 134a, and 135a are not equal to each other, and the outermost wire contact ends 131a and 135a are formed larger than the wire contact ends 132a, 133a, and 134a disposed therein in the width direction. .

Therefore, a larger diameter wire core may be contacted and connected to the wire contact ends 131a and 135a formed at the outermost part. Since a greater movement is applied to the outermost wire cores, a wider solder contact area can be ensured, so that the micro USB plug connector according to the exemplary embodiment of the present invention can be more stably connected to the wires. If desired, the surface area size or width of each wire contact end may be formed differently.

Among the plug connection terminals 131, 132, 133, 134, 135, 136, and 139 provided in plural, a pair of plug connection terminals 139a and 139b disposed from the outermost side to the center side and applied for power supply are provided. The plug connection ends 139a and 139b of the integrated power plug connection terminal 162 provided are connected to each other through a connecting piece 139c.

As described above, a pair of plugs for power supply in a micro USB connector plug of the type that cannot be used normally printed circuit board by connecting the plug connection end (139a, 139b) applied for power supply through the connecting piece (139c) The connection ends 139a and 139b can be integrated.

The plug connection terminals 131, 132, 133, 134, 135, 136, and 139 may be inserted into the plug connection 114 and the mold body 120 of the plug mold assembly 110 to fix the plug mold assembly 110. The plug connecting portion 114 and the mold body 120 are formed with a groove in which the plug connecting terminals can be accommodated.

Referring to FIG. 2, the plug connection ends 131d, 132d, 133d, 134d, and 135d are formed such that a flat surface extends in a vertical direction, and the wire contact ends 131a, 132a, 133a, 134a, and 135a are formed so that the flat surface becomes a horizontal direction.

Therefore, the plug connection ends can be vertically arranged densely even in a narrow space between the plug connection ends, and a sufficient horizontal contact area with the wire core can be secured at the wire contact ends.

Referring to FIG. 3, in order to fasten the mold body 120 to the plug mold assembly 110 in a state in which the plug connection terminal group 130 is inserted into the plug connection portion 114 of the plug mold assembly 110. Fastening extension ends 124p protruding from each other are formed at both ends of the mold body 120, and fastening shoulders 124s protrude in a direction in which the fastening extension ends 124p pair face each other.

Referring to FIG. 1 again, the fastening shoulder 124s is inserted into the fastening groove 115 disposed at the complementary position of the plug connection part 114 so that the plug mold assembly 110 and the mold body part 120 are fastened. do.

Referring to FIG. 5, the mold body part 120 covers a part of the base part 122 where the plug connection terminal group is disposed and a part of the plug connection terminal group 130 seated on the base part 122, and part of the mold body part 120 is exposed. And a wiring cap 124 to be made. The mold body 120 is coupled to the rear side of the plug mold assembly 110 to cover a portion of the plug connection terminal group 130 disposed on the upper surface of the mold body 120.

5 and 6, the mold body portion 120 has wire seating portions 127a, 127b, 127c, and 127d corresponding to the wire contact ends 131a, 132a, 133a, 134a, and 135a at their rear ends, respectively. And a guide protrusion 126 that defines 127e.

The outermost part in the width direction at the rear end of the mold body part 120 is extended to correspond to the side end surface of the base part 122 of the mold body part 120, and the wire seating part together with the guide protrusion 126 ( A pair of end guides 125a and 125b are arranged to partition 127a and 127e.

The upper side surfaces of the guide protrusion 126 and the end guides 125a and 125b may be chamfered roundly.

As shown in Figs. 5 and 6, the respective surfaces of the wire contact ends 131a, 132a, 133a, 134a, and 135a have a direction intersecting the extension direction (Y axis direction) of the wire contact ends, for example, One or more grooves 131b, 132b, 133b, 134b, and 135b may be formed at predetermined intervals in the X direction.

The groove prevents the wire core from slipping at the wire contact end, and the soldering material is sufficiently disposed in the indented groove to realize a firm contact coupling between the wire core and the wire contact end.

6 and 7, the wire seating portions 127a, 127b, 127c, 127d, and 127e are seating stepped surfaces 123a, 123b, 123c, 123d, and 123e which protrude from the bottom surface of the wire seating portion. It is provided with each.

In addition, the contact end end surfaces 131c, 132c, 133c, 134c, and 135c corresponding to the rear end faces of the respective wire contact ends 131a, 132a, 133a, 134a, and 135a may have the seating stepped surfaces 123a, 123b, and 123c. And 123d, 123e are moved forward from the front side.

As shown in FIG. 7, the sum of the height t1 of the seating step step surface and the height t2 of the wire contact end end surface is the coating thickness of the wire covering part surrounding the wire core to be connected to the wire contact end. It is formed as above.

Therefore, as shown in FIG. 8, the wire sheath 202 is formed in two stages in consideration of the thickness of the wire sheath 202 surrounding the plurality of wire cores 206 of the wire 200 to be soldered and placed at the wire contact end. The wire core 206 extending beyond the wire fixing portion 204 and placed at the wire contacting end is disposed corresponding to the height of the sum of t1 and t2 corresponding to the height of the step, and thus the sharp curve corresponding to the height difference by the thickness of the coating part. It can be stably disposed at the wire contact end without going through the lead.

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and the present invention can be variously modified by those skilled in the art to which the present invention pertains. Is included in the scope of the present invention.

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention.

Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

100: micro USB connector plug
110: plug mold assembly
112: metal shell
114: plug connection
115: fastening groove
116: coupling hole
117: latch
118: engaging projection
119: contact pin
120: mold body portion
124s: Fastening shoulder
124p: tightening extension
124: Legendary Link Cap
122: base part
130: plug-in terminal group
131: power supply plug connection terminal
132: plug connection terminal for the first data
133: plug connection terminal for the second data
134: Plug connection terminal for connection
135: first grounding plug connection terminal
136: second grounding plug connection terminal
139: integrated power plug connection terminal
139c: connecting piece
131a, 132a, 133a, 134a, 135a: wire contact end
131b, 132b, 133b, 134b, 135b: groove
131c, 132c, 133c, 134c, 135c: contact end face
131d, 132d, 133d, 134d, 135d, 136d, 139a, 139b: plug connection terminal
131f: ground terminal

Claims (8)

In the micro USB connector plug selectively connected to the electronic equipment, but selectively connected to the socket connection portion of the micro USB connector socket provided in the electronic equipment, to input and output data or to charge the electronic equipment,
A plug mold assembly including a plug connection part to which the socket connection part of the micro USB connector socket is selectively connected and connected, and a metal shell which is coupled to surround the plug connection part;
A mold body part disposed behind the plug connection part; And
A plug connection terminal group including a plurality of plug connection terminals having a plug connection end inserted into and fixed to the plug mold assembly from the rear of the plug connection portion, and protruding toward the front side, wherein at least a part of a rear end of the plug connection terminal is provided; And a plug connection terminal group each having a wire contact end exposed upwardly from the mold body portion, respectively;
The mold body portion is characterized in that it comprises a guide protrusion for partitioning the wire seating portions respectively corresponding to the wire contact end, micro UsB connector plug. The method of claim 1,
And at least one groove formed on each surface of the wire contact end in an intaglio shape to intersect the extension direction of the wire contact end. The method of claim 1,
The plug connection end has a flat surface extending in the vertical direction, the wire contact end is characterized in that it has a plane extending in the horizontal direction, micro UsB connector plug. The method of claim 1,
The plug connection terminal group includes a pair of grounding plug connection terminals disposed on the outermost side of the plug connection terminals of the plug connection terminal group.
One grounding plug connection terminal of the pair of grounding plug connection terminals includes a wire contact end,
And the other grounding plug connection terminal does not have a wire contacting end. The method of claim 4, wherein
A pair of the grounding plug connection terminal further comprises an elastic ground end bent inclined so as to be elastically deformed to the side facing each other extending to the upper side, the micro Usb connector plug. The method of claim 1,
The width of the pair of wire seating portion disposed at the outermost side in the width direction of the wire seating portion is formed larger than the width of the remaining wire seating portion, micro USB connector plug. The method of claim 1,
And the wire seating portions are provided with seating stepped surfaces projecting from the bottom surface of the wire seating portion, respectively. The method of claim 7, wherein
The sum of the height of the seating stepped surface and the height of the end face of the wire contacting end is equal to or greater than the coating thickness of the wire covering part surrounding the wire core connected to the wire contacting end.

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