KR101951497B1 - Micro usb receptacle connector and micro usb plug connector combined with it - Google Patents

Abstract

The present invention discloses a micro USB receptacle connector and a micro USB connector plug coupled thereto. A micro USB receptacle connector according to one aspect of the present invention includes: a main receptacle contact formed corresponding to a main plug contact of a plug connector to provide an electrical contact; A sub receptacle contact formed on both sides of the main receptacle contact to provide an electrical contact of an additional module; A receptacle insulator for holding the main receptacle contacts and the sub receptacle contacts; A support plate covering and protecting the receptacle insulator with the contacts held therein; And a receptacle shell surrounding the outside of the receptacle insulator, wherein the sub-receptacle contact is located higher than the main receptacle contact in an upper direction in which the support plate is located, and may have a contact height different from that of the main receptacle contact.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a micro USB receptacle connector and a micro USB connector,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro USB connector, and more particularly, to a micro USB connector capable of providing structural stability and preventing a short circuit.

Portable electronic devices such as mobile phones, notebooks, PMPs, portable game machines, MP3 players, smart phones, and the like, which have been widely popularized by the public in recent years, are gradually expanding in type and function. Particularly, the portable electronic device is provided with a connector for data communication. The connector is composed of a receptacle connector mounted on a printed circuit board (PCB) in a portable electronic device and a plug connector fastened thereto, Or to connect the power supply to supply power.

Micro-USB is one of the most widely used connectors.

The plug connector includes five main plug contacts conforming to the micro USB 2.0 standard, at least one sub plug contact on both sides of the main plug contact, and a plug insulator for inserting and connecting the contacts and a plug shell surrounding the insulator .

However, according to the prior art, when the plug connector is fastened to the receptacle connector, A part of the contact escaping portion formed at the lower end of the plug contact may be broken. Accordingly, there is a problem in that the plug contact may be short-circuited with the plug shell through the escaping portion of the broken sub-contact.

In addition, the receptacle contact can not secure a sufficient electrical separation distance between adjacent fins, resulting in a short circuit due to burrs, thereby damaging the parts.

Korean Registered Patent No. 1265270 (Announcement 2014.05.24)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a connector for preventing a short circuit by preventing damage to a product by providing structural stability.

Another object of the present invention is to provide a connector that can secure a sufficient separation distance between pins to prevent a short circuit.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a micro USB receptacle connector comprising: a main receptacle contact formed to correspond to a main plug contact of a plug connector to provide an electrical contact; A sub receptacle contact formed on both sides of the main receptacle contact to provide an electrical contact of an additional module; A receptacle insulator for holding the main receptacle contacts and the sub receptacle contacts; A support plate covering and protecting the receptacle insulator with the contacts held therein; And a receptacle shell surrounding the outside of the receptacle insulator, wherein the sub-receptacle contact is located higher than the main receptacle contact in an upper direction in which the support plate is located, and may have a contact height different from that of the main receptacle contact.

The height difference between the sub-receptacle contact and the main receptacle contact may be greater than 0.03 mm and less than 0.13 mm.

The sub receptacle contacts may be formed on both sides of the main receptacle contact in a form of a relatively shorter length than the main receptacle contacts.

The pins serving as the power supply terminals of the sub receptacle contacts may have different lengths from the neighboring pins.

The pin serving as the power supply terminal of the main receptacle contact may be shorter than the neighboring pin.

The receptacle insulator includes: a second mold part for supporting the rear surface of the second protrusion part of the receptacle shell to assist over-insertion of the plug connector; And a first mold part that supports the rear surface of the first protrusion part of the force lock shell and further assists deterrence of over insertion of the plug connector.

The second mold part may have the same length as the molded part of the receptacle insulator into which the sub-receptacle contact is inserted.

The second mold part may be located at the center of the receptacle insulator.

And the second mold part includes a second groove part formed at a corresponding position of the second protrusion part of the receptacle shell to assist in over-insertion of the plug connector, and the first mold part is provided at a corresponding position of the first protrusion part of the receptacle shell And may further include a first groove portion which is formed to further assist in over-insertion of the plug connector.

The receptacle shell may include a first locking member 180 formed at the center of the upper portion corresponding to the locking hole of the plug connector and having elasticity in an inwardly projecting shape.

According to another aspect of the present invention, there is provided a micro USB connector, comprising: a main plug contact formed to correspond to a main receptacle contact of a receptacle connector to provide an electrical contact; A sub plug contact formed on both sides of the main plug contact to provide an electrical contact portion of an additional module; A plug insulator for holding the main plug contact and the sub plug contact and including a contact escape portion which is a space for escape of the contact; And a plug shell which surrounds the outside of the plug insulator and includes a plug insertion prevention structure for preventing misjunction when the plug connector and the plug connector are fastened to each other, The contact escape portion may be shorter in length than the neighboring second contact escape portion.

The sub plug contacts are formed on both sides of the main plug contact in a form of a relatively longer length than the main plug contacts and are provided at positions corresponding to the sub receptacle contacts of the receptacle connector to provide the electrical contact portions.

The plug shell may include a locking hole coupled to the first locking member 180 of the receptacle shell to secure the fastening between the receptacle connector and the plug connector.

The locking hole may be formed at a position corresponding to the first locking member 180 of the receptacle shell.

The difference in length between the first contact escape portion and the second contact escaping portion may be larger than 0.03 mm and smaller than 0.13 mm.

According to another aspect of the present invention, a micro USB connector may be formed by combining the micro USB receptacle connector and the micro USB connector.

According to another aspect of the present invention, an electronic device including the micro USB connector may be formed.

According to an aspect of the present invention, the contact height of the main receptacle contact and the sub-receptacle contact are differently arranged to secure the structural stability of the plug connector, thereby preventing the product from being damaged when the receptacle connector and the plug connector are coupled .

In addition, it is possible to prevent an occurrence of a short circuit by securing an insulation distance through a height difference between the main receptacle contact and the sub receptacle contact.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is a configuration diagram of a receptacle connector according to an embodiment of the present invention;
2 is a plan view of a receptacle insulator to which a contact according to an embodiment of the present invention is coupled,
FIGS. 3A to 3C illustrate a receptacle insulator to which a sub-receptacle contact according to another embodiment of the present invention is coupled;
4A is a front view of a receptacle connector according to the prior art,
4B is a front view of a receptacle connector according to an embodiment of the present invention;
FIG. 5 is a sectional view taken along the line III-III 'in FIG. 4A and a sectional view taken along the line IV-IV'
6 is a configuration diagram of a plug connector according to an embodiment of the present invention;
7A is a front view of a plug connector according to the prior art,
7B is a front view (b) of a plug connector according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be construed in accordance with the technical idea of the present invention based on the principle that the concept of a term can be properly defined in order to describe its own invention in the best way It must be interpreted as meaning and concept. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

2 is a plan view of a receptacle insulator to which a contact according to an embodiment of the present invention is coupled, and FIGS. 3A to 3C illustrate a plan view of a receptacle connector according to another embodiment of the present invention. Fig. 3 is a view showing a receptacle insulator to which the sub-receptacle contacts are coupled.

1 to 3C, a receptacle connector according to the present embodiment includes a receptacle contact, a support plate 130, a receptacle insulator 150, and a receptacle shell 170. As shown in Fig.

The receptacle contact includes a main receptacle contact 110 providing a plug contact and an electrical contact portion of a plug connector and a sub receptacle contact 120 formed on both sides of the main receptacle contact 110 to provide an electrical contact of a further module .

The main receptacle contacts 110 are arranged in the receptacle insulator 150 by an insert molding method and are provided at positions corresponding to the plug contacts of the plug connector (not shown) to provide electrical contact portions. At this time, the main receptacle contact 110 may be configured such that five pins are arranged at a constant pitch so as to satisfy a pin specification of a conventional micro USB.

As shown in FIG. 2, the first pin 111 serving as a power pin among the plurality of pins of the main receptacle contact 110 may be shorter than the remaining pins. The reason why the length of the first pin 111 serving as the power supply pin is shorter than the length of the other pins is that the insulation distance between the support plate 130 and the adjacent second pin is secured, It is to prevent short.

The sub receptacle contacts 120 may be formed on both sides of the main receptacle contacts 110 in a form of a relatively shorter length than the main receptacle contacts 110. [ This may provide an additional contact portion when connecting the additional connection module to the main receptacle contact 110 separately.

2, at least one or more sub-receptacle contacts 120 are arranged on both sides of the main receptacle contact 110, and the number of the sub-receptacle contacts 120 arranged on both sides are the same or different from each other Can be arranged in a number. For example, as shown in FIG. 2, three sub receptacle contacts 120 may be formed on the left and right sides of the main receptacle contact 110, respectively.

At this time, the sub receptacle contact 120 may have a length different from that of the main receptacle contact 110 to ensure an insulation distance, thereby preventing a product from being broken due to a short due to a burr.

That is, as shown in FIG. 2, the length of the third pin 123 positioned nearest to the main receptacle contact in the sub-receptacle contact 120 and acting as a power supply terminal is relatively longer than other pins. As described above, by making the length between the third pin 123 serving as the power supply pin and the other pins different, the insulation distance is ensured due to the step difference (separation distance) between the pins. However, it is not limited to this, but pins 1 and 3 have the same length and relatively only the length of the second pin can be formed, and the insulation distance between the pin 3 and the neighboring pin And may be of any form capable of providing additional electrical contact with the sub plug contact when coupled with the plug connector. 3A to 3C, the sub receptacle contact 120 may be formed in the receptacle insulator 150 in various lengths.

That is, according to the present embodiment, it is possible to prevent a product from being damaged by preventing the occurrence of a short circuit due to Burr due to the step difference (distance between pins) of the sub plug contact.

The sub receptacle contact 120 may be arranged at a different contact height than the main receptacle contact 110. For example, according to the present embodiment, the sub-receptacle contact 120 may be positioned higher than the main receptacle contact 110 in the upper direction in which the support plate 130 is located to provide a different contact height from the main receptacle contact 110 can do. A detailed description thereof will be given later with reference to FIGS. 4A to 4B.

Fig. 4A is a front view of the receptacle connector according to the prior art, Fig. 4B is a front view of the receptacle connector according to the embodiment of the present invention, Fig. 5 is a sectional view along line III- Sectional view taken along the line IV-IV 'of FIG.

Referring to partially enlarged view A in FIG. 4A, the conventional sub-receptacle contact 120 is formed at the same height as the main receptacle contact 110 to provide a contact. When the receptacle connector according to the related art and the plug connector (FIG. 7A) according to the related art are coupled, the sub plug contact 620 of the plug connector moves due to elasticity downward formed with the contact escape portion 630, Combining is done. At this time, the sub plug contact 620 moved to the contact escape portion 630 abuts against one side of the contact escape portion 630 to transmit the force. The contact escape portion 631 located under the first pin 621 closest to the reverse insertion preventing structure portion 671 of the plug shell 670 among the sub plug contacts 620 is inserted into the plug shell 670, The mold region of the corner portion adjacent to the structure portion 671 is insufficiently formed. Accordingly, as described above, the contact escape portion 631 located at the lower portion of the first pin 621 can be damaged by receiving the force by the moved sub plug contact 621. [ Accordingly, the sub plug contact 621 contacts the plug shell 670 through the broken contact protruding part 630, and a short circuit may occur.

4B, the sub-receptacle contact 120 according to an embodiment of the present invention may be arranged at a different contact height than the main receptacle contact 110. [

5 (a) and 5 (b), the sub receptacle contact 120 in the prior art is partially inserted into and bonded to one surface of the receptacle insulator 150, while the sub receptacle contact 120 according to the present embodiment, (120) is inserted and inserted into the receptacle insulator (150) more than in the prior art. Accordingly, the sub receptacle contact 120 can be positioned higher than the main receptacle contact 110 in the upper direction where the support plate is located. Accordingly, a step d is generated between the main receptacle contact 110 and the sub receptacle contact 120.

 In other words, the sub receptacle contact 120 may be positioned higher than the main receptacle contact 110 in the upper direction where the support plate is located, thereby providing a different contact height from the main receptacle contact 110.

When the height of the sub receptacle contact 120 is relatively higher than the height of the main receptacle contact 110 in the upper direction in which the support plate is located as described above, when the receptacle connector and the plug connector are coupled, the sub plug contacts 620 The contact force is transmitted to one side of the contact escape portion 630 and is transmitted to the sub-plug contact 620 relatively less than in the prior art, even if the contact escaping portion 630 is moved downward. Therefore, the contact escape portion 630 receives less force by the moved sub plug contact 620, and can prevent breakage, and can prevent a short circuit due to the breakage.

Preferably, the step (d) is greater than 0.03 mm and less than 0.13 mm, which is 0.08 mm in this embodiment.

The effect on the numerical range of the step (d) will be described in the plug connector to be described later.

Further, in order to further prevent breakage of the contact escaping portion provided at the lower end of the sub plug contact of the plug connector, the contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located, The length of the contact escape portion 632 may be shorter than that of the contact escape portion 632. That is, the contact escape portion 631 in which the first pin 621 is located can be made smaller in the moving distance of the contact than the contact escape portion 632 in which the second pin 622 is located, . The contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located can enlarge the mold region of the edge portion adjacent to the reverse insertion preventing structure portion 671 of the plug shell 670 So that it can be more structurally stable than the prior art.

The contact points of the main receptacle contacts 110 and the sub receptacle contacts 120 are arranged to be different from each other so that the contact position of the sub receptacle contacts 120 is relatively positioned relative to the contact position of the main receptacle contacts 110 So that the structural stability of the plug connector is secured, thereby preventing the product from being damaged when the receptacle connector and the plug connector are coupled.

In addition, it is possible to prevent short-circuiting by ensuring the insulation distance through the difference in height between the main receptacle contact 110 and the sub-receptacle contact 120. [

The description related to the plug connector will be described later with reference to Figs. 6 to 7B.

The receptacle insulator 150 can be formed by injecting a plastic resin by an insert molding method. More specifically, the receptacle contact and a support plate described later may be inserted into an insert molding die, and a plastic resin may be injected into the die while being fixed by a jig. At this time, when the plastic resin is injected into the mold, it is fixed with a jig to prevent the receptacle contacts and the support plate placed in the insert molding die from moving.

The receptacle insulator 150 can be inserted and accommodated in the rear side of the receptacle shell when the receptacle contact and the support plate to be described later are received and formed by the insert molding method.

Referring to FIG. 2, the receptacle insulator 150 may include a first mold part 151 and a second mold part 152 for preventing over insertion of the plug connector to prevent occurrence of connection failure.

The second mold part 152 includes a second groove 153 at a position corresponding to the second protrusion 172 of the receptacle shell 170. At this time, the second groove 153 supports the rear surface of the second protrusion 172 of the receptacle shell 170 to assist in over insertion of the plug connector. The first mold part 151 includes a first groove part 154 at a position corresponding to the first protrusion part 171 of the receptacle shell 170. At this time, the first groove 154 supports the rear surface of the first protrusion 171 of the receptacle shell 170 to further prevent over insertion of the plug connector, so that when the receptacle connector is coupled with the plug connector, It is possible to prevent the occurrence of connection failure due to over-insertion of the connector.

At this time, the length H 'of the second mold part 152 is formed to be equal to the length H of the molded part of the receptacle insulator 150 into which the sub-receptacle contact 120 is inserted so that the coupling between the receptacle connector and the plug connector It is possible to prevent breakage of the sub receptacle contact 120 due to insertion of the plug connector by preventing insertion of the plug connector by the second mold part 152 and also to prevent connection failure. However, the present invention is not limited thereto. The second mold part 152 may be positioned in front of the sub-receptacle contact 120 in a direction in which the plug connector is inserted, thereby preventing the insertion and the damage of the contact. none.

The second mold part 152 may be located at the center of the receptacle insulator 150.

However, the second mold part 152 may be formed at any position that supports the rear surface of the second protrusion part 172 and can assist the over insertion of the plug connector.

The support plate covers a part or the whole of the receptacle insulator 150 in which the receptacle contacts are held and serves to protect the receptacle contacts from external shocks and can be made of stainless steel. The support plate may be positioned opposite the receptacle contact with the receptacle insulator 150 therebetween.

The receptacle shell 170 may cover at least a part or the whole of the receptacle insulator 150 and may shield the receptacle shell 170 and assist in coupling with the plug connector corresponding to the receptacle connector. At this time, the receptacle shell 170 may have a shape in which a part of an edge thereof is inclined in order to prevent misjunction when the receptacle shell 170 is engaged with the plug connector. In this embodiment, both sides of the receptacle shell 170, opposite to the receptacle contact, The plug shell 670 may be formed to correspond to the plug shell 670 of the plug connector to be connected.

The receptacle shell 170 may include a first locking member 180 for securing engagement in engagement with the plug connector.

The first locking member 180 is formed to protrude inward from the center of the upper portion of the receptacle shell and may have elasticity. This can secure the fastening by engaging with the locking hole 680 when engaged with a plug connector to be described later.

FIG. 6 is a configuration diagram of a plug connector according to an embodiment of the present invention, FIG. 7A is a front view of a plug connector according to the prior art, and FIG. 7B is a front view (b) of a plug connector according to an embodiment of the present invention .

6 to 7B, the plug connector according to the present embodiment may include a plug contact, a plug insulator 650, and a plug shell 670. [

The plug contact may include a main plug contact 610 and a sub plug contact 620.

The main plug contact 610 may be formed to correspond to the receptacle contact of the receptacle connector to provide an electrical contact portion.

The sub plug contacts 620 may be formed on both sides of the main plug contacts 610 in a shape of a relatively longer length than the main plug contacts 610 and may be formed at positions corresponding to the sub receptacle contacts of the receptacle connector So that the electrical contact portion can be provided.

The main plug contact 610 and the sub plug contact 620 may be inserted and coupled to the plug insulator 650.

As shown in Figs. 6 to 7B, the contact escaping portion 630 may be formed on the lower side of the plug contact. The contact escape portion 630 is a component for providing an escape space as the plug contact of the plug connector moves downward when the receptacle connector and the plug connector are fastened.

However, when the plug connector is coupled with the receptacle connector according to the prior art, the contact escape portion 630 formed at the lower portion of the plug contact of the plug connector may be damaged, (670) to cause a short circuit.

4A and 7A, the sub receptacle contact 120 according to the related art is formed at the same height as the main receptacle contact 110 to provide a contact point. At this time, when the receptacle connector and the plug connector according to the related art are coupled, the sub plug contact 620 of the plug connector is moved by elasticity in a downward direction in which the contact escape portion 630 is formed, . At this time, the sub plug contact 620 moved to the contact escape portion 630 abuts against one side of the contact escape portion 630 to transmit the force. 7A, specifically, a portion of the plug insulator 650 into which the sub plug contact 620 is inserted is extended to the contact escape portion 631 where the first pin 621 of the sub plug contact 620 is located, The contact protruding portion 631 is deformed by the moved sub plug contact 621 as described above because the mold region of the corner portion adjacent to the reverse insertion preventing structure portion 671 of the plug shell 670 is insufficiently formed, And can be damaged. Thus, the sub plug contact 621 contacts the plug shell 670 through the broken contact escape portion 631 and a short can occur.

In contrast, when the receptacle connector and the plug connector are coupled according to the embodiment of the present invention, the contact escape portion 630 formed at the lower portion of the plug contact of the plug connector is inserted into a corner of the plug shell 670, A sufficient mold area can be ensured, and therefore, it can be more structurally stable than the prior art.

Referring to FIGS. 4B and 7B, the sub receptacle contact 120 according to the embodiment of the present invention can be arranged at a contact height different from that of the main receptacle contact 110. That is, the sub receptacle contact 120 may be positioned higher than the main receptacle contact 110 in the upper direction where the support plate is located, thereby providing a contact height different from that of the main receptacle contact.

When the height of the sub receptacle contact 120 is relatively higher than the height of the main receptacle contact beam 110 multi support plate, the sub plug contact 620 are moved in a downward direction in which the contact escape portion 630 is formed, the plug contact is brought into contact with one side of the contact escaping portion 630 and transmitted to the contact portion 630 relatively less than in the prior art. Therefore, the contact escape portion 630 can receive less force by the moved sub plug contact 620 and can be prevented from being damaged.

The height d of the other contact between the main receptacle contact 110 and the sub receptacle contact 120 is greater than 0.03 mm and smaller than 0.13 mm and is 0.08 mm in the present embodiment.

7B, specifically, a part of the plug insulator 650 into which the sub plug contact 620 is inserted is extended as shown in the enlarged view, and the contact escape 650 where the first pin 621 of the sub plug contact 620 is located The length of the portion 631 may be shorter than the length of the contact escape portion 632 where the second pin 622 is located. That is, the contact escape portion 631 in which the first pin 621 is located can be made smaller in the moving distance of the contact than the contact escape portion 632 in which the adjacent second pin 622 is located, , Since the position of the sub receptacle contact 120 is positioned higher than that of the prior art, it is possible to enlarge the mold region of the edge portion adjacent to the reverse insertion preventing structure portion 671 of the plug shell 670, .

The reason why the length of the contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located can be shortened because the sub receptacle 620 is connected to the sub plug contact 620, And the height of the contact 120 is set to be higher than that of the main receptacle contact 110.

For example, the length of the contact escape portion 631 where the first pin 621 of the sub plug contact 620 is located is set to be 0.08 mm shorter than the length of the contact escape portion 632 where the second pin 622 is located .

 That is, the length of the contact escape portion 632 of the sub plug contact 620 adjacent to the contact escape portion 631 where the first pin 621 of the sub plug contact 620 is located is different from the length difference of the contact escape portion 632 where the second pin 622 of the sub plug contact 620 is located. (L1) may be 0.08 mm based on the lower end of the contact escape portion 631 where the first pin 621 is located. If the length of the contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located is shorter than the length of the contact escape portion 632 in which the second pin 622 is located, It is possible to improve the mold area of the corner portion adjacent to the reverse insertion preventing structure portion 671 of the plug shell 670 by about 60%. That is, the distance between the reverse insertion preventing structure portion 671 of the plug shell 670 and the adjacent corner portion is conventionally increased from 0.1 mm to 0.16 mm. Therefore, when the receptacle connector and the plug connector are coupled, even if the sub plug contact 620 of the plug connector is moved downward with the contact escape portion 630 formed, the plug contact is fitted to one side of the contact escape portion 630 So that the force of transmitting is less than that of the prior art. Also, even if the plug contact comes into contact with one side of the contact escape portion 630, the force that can overcome the physical strength due to the movement of the sub plug contact 620 becomes greater than in the prior art. This is because the distance between the edge portions of the contact escape portion 630 adjacent to the reverse insertion preventing structure portion 671 increases as the mold portion of the lower region of the contact escape portion 630 is reinforced.

The length difference L1 between the contact escape portion 631 in which the first pin 621 is located and the contact escape portion 632 in which the second pin 622 is located is preferably larger than 0.03 mm and smaller than 0.13 mm .

That is, when the length difference L1 is 0.03 mm or less, the distance between the reverse insertion preventing structure portion 671 of the plug shell 670 and the adjacent corner portion increases from 0.1 mm (d1) to 0.12 mm (d2) The contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located is positioned adjacent to the reverse insertion preventing structure portion 671 of the plug shell 670 Since the mold region of the corner portion is insufficiently formed, the contact escaping portion 630 can be damaged by receiving the force by the moved sub plug contact 620.

In addition, when the length difference L1 is 0.13 mm or more, the distance between the reverse insertion preventing structure portion 671 of the plug shell 670 and the adjacent corner portion increases from 0.1 mm (d1) to 0.195 mm (d2) % Improvement effect. However, since the contact escaping portion 630 is formed to be insufficient, the plug contact of the plug connector may be broken due to lack of fluidity when the receptacle connector and the plug connector are coupled.

As described above, the contact escape portion 631 in which the first pin 621 of the sub plug contact 620 is located is connected to the contact escape portion 632 where the second pin 622 of the adjacent sub plug contact 620 is located. The length difference L1 based on the lower end portions of the contact escape portions 631 and 632 included in the neighboring sub plug contacts 621 and 622 is larger than 0.03 mm and smaller than 0.13 mm Do.

The plug shell 670 covers the outside of the plug insulator 650 and may include a locking hole 680 and a reverse insertion preventing structure 671. [

The locking hole 680 may be coupled to the first locking member 180 included in the receptacle shell of the receptacle connector to secure its engagement when fastened between the receptacle connector and the plug connector.

The reverse insertion preventing structure portion 671 is configured to prevent mis-coupling between the receptacle connector and the plug connector at the time of engagement, and the inverted insertion preventing structure portion 671 may be configured in a shape in which the corner portion of the surface facing the sub plug contact 620 is inclined. As described above, since the plug connector has the reverse insertion preventing structure portion 671 as described above, it is possible to prevent the breakage of the contacts due to the reverse engagement when the receptacle connector and the plug connector are fastened.

The contact points of the main receptacle contacts 110 and the sub receptacle contacts 120 are arranged to be different from each other so that the contact position of the sub receptacle contacts 120 is relatively positioned relative to the contact position of the main receptacle contacts 110 So that the structural stability of the plug connector is secured, thereby preventing the product from being damaged when the receptacle connector and the plug connector are coupled.

In addition, it is possible to prevent short-circuiting by ensuring the insulation distance through the difference in height between the main receptacle contact 110 and the sub-receptacle contact 120. [

The main receptacle contacts 110 may have different terminal lengths to prevent a short circuit due to a burr due to a step difference and the sub receptacle contacts 120 may also have terminal lengths In other words, it is possible to prevent the occurrence of a shot due to the burr through the step (distance).

As described above, the receptacle connector and the plug connector according to the present embodiment can be combined to form a micro USB connector.

The electronic device may be a mobile phone, a notebook, a PMP, a portable game machine, an MP3 player, a smart phone, a digital camera, a PDA, or the like. The electronic device may be electrically connected to other electronic devices through the micro USB connector to transfer data such as photographs, music, video signal frequency, or may be connected to a charger to achieve a charging function.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

110: Main receptacle contact
120: sub receptacle contact
130: Support plate
150: Receptacle insulator
170: Receptacle shell
610: main plug contact
620: Sub plug contact
630:
650: Plug insulator
670: Plug shell

Claims (17)

A main receptacle contact formed corresponding to a main plug contact of the plug connector to provide an electrical contact portion;
A sub receptacle contact formed on both sides of the main receptacle contact to provide an electrical contact of an additional module;
A receptacle insulator for holding the main receptacle contacts and the sub receptacle contacts;
A support plate covering and protecting the receptacle insulator with the contacts held therein; And
And a receptacle shell surrounding the outside of the receptacle insulator,
Wherein the sub receptacle contact is located higher than the main receptacle contact in an upper direction in which the support plate is located and has a contact height different from that of the main receptacle contact,
Wherein a pin serving as a power supply terminal of the main receptacle contact is shorter in length than other pins of a neighboring main receptacle contact. The method according to claim 1,
Wherein a height difference between the sub-receptacle contact and the main receptacle contact is greater than 0.03 mm and less than 0.13 mm. The method according to claim 1,
Wherein the sub receptacle contacts are formed on both sides of the main receptacle contacts in a shape that is shorter in length than the main receptacle contacts. The method according to claim 1,
Wherein a pin serving as a power supply terminal of the sub receptacle contact has a different length from a neighboring pin. delete The method according to claim 1,
The receptacle insulator includes: a second mold part for supporting the rear surface of the second protrusion part of the receptacle shell to assist over-insertion of the plug connector; And a first mold part for supporting the rear surface of the first protrusion part of the receptacle shell to further assist over insertion of the plug connector. ≪ Desc / Clms Page number 13 > The method according to claim 6,
Wherein the second mold part has the same length as the mold part of the receptacle insulator into which the sub-receptacle contact is inserted. The method according to claim 6,
And the second mold part is located at the center of the receptacle insulator. The method according to claim 6,
And the second mold part includes a second groove part formed at a corresponding position of the second protrusion part of the receptacle shell to assist in over-insertion of the plug connector, and the first mold part is provided at a corresponding position of the first protrusion part of the receptacle shell And a first groove portion which is formed to further assist the over insertion papers of the plug connector. The method according to claim 1,
The receptacle shell includes a first locking member formed at the center of the upper portion corresponding to the locking hole of the plug connector and having elasticity in an inwardly projecting shape; And a plurality of micro USB receptacle connectors. A main plug contact formed corresponding to the main receptacle contact of the receptacle connector to provide an electrical contact portion;
A sub plug contact formed on both sides of the main plug contact to provide an electrical contact portion of an additional module;
A plug insulator for holding the main plug contact and the sub plug contact and including a contact escape portion which is a space for escape of the contact; And
And a plug shell which surrounds the outside of the plug insulator and includes a reverse insertion preventing structure for preventing misjunction when the receptacle connector and the plug connector are fastened,
Wherein the first contact escape portion adjacent to the reverse insertion preventing structure portion of the contact escape portion is shorter than the second contact escape portion adjacent to the first contact escape portion. 12. The method of claim 11,
The sub plug contacts are formed on both sides of the main plug contact in a form of a relatively longer length than the main plug contacts and are provided at positions corresponding to the sub receptacle contacts of the receptacle connector to provide the electrical contact portions Micro USB connectors plug. 12. The method of claim 11,
Wherein the plug shell includes a locking hole coupled to the first locking member of the receptacle shell for securing engagement between the receptacle connector and the plug connector. 14. The method of claim 13,
Wherein the locking hole is formed at a position corresponding to the first locking member of the receptacle shell. 12. The method of claim 11,
Wherein a difference in length between the first contact escape portion and the second contact escaping portion is larger than 0.03 mm and smaller than 0.13 mm. A micro USB receptacle connector according to any one of claims 1, 2, 3, 4, 6, 7, 8, 9, 10; And
A micro USB connector according to any one of claims 11 to 15, characterized in that it comprises a micro USB connector plug connector. An electronic device comprising a micro USB connector according to claim 16.

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