WO2011087282A2

WO2011087282A2 - Double-sided plug having a quadrangular frame

Info

Publication number: WO2011087282A2
Application number: PCT/KR2011/000227
Authority: WO
Inventors: 조성빈
Original assignee: (주)크리어전자
Priority date: 2010-01-12
Filing date: 2011-01-12
Publication date: 2011-07-21
Also published as: WO2011087282A3

Abstract

The present invention relates to a double-sided plug which has a quadrangular frame coming into contact with and being supported on the inner surface of a connecting port, and thus is firmly inserted into and connected to the connecting port by preventing easy separation of the plug from the connecting port due to an accidental shock, and allows terminals to be stably connected to corresponding ground pins for a long period of time without much difficulty. The double-sided plug according to the present invention comprises: a quadrangular frame inserted into the connecting port in a way that the outer surface thereof makes contact with and is supported on the inner surface of the connecting port; a hard substrate arranged at the inner center of the quadrangular frame; and four terminals (V, D+, D-, G) arrayed symmetrically to one another on both sides of the substrate. As such, although the plug may be inserted into the connecting port in any direction, the four terminals arrayed on one side of the substrate are connected, respectively, to the four ground pins on the connecting port, and the four terminals arrayed on the other side of the substrate can be connected without short circuiting by making no contact with a tension ground pin provided at the connecting port.

Description

Bidirectional plug with square frame

The present invention relates to a bidirectional plug in which the plug's connection terminal is connected to the connection pin of the connection port without a short, regardless of the direction in which the plug is inserted into the connection port. With a frame, the plug is strongly inserted and coupled so that the plug is not easily separated from the connection port by accidental impact, and the connection terminal relates to a bidirectional plug that is stably connected for a long time without too much trouble with the connection pin.

Various communication devices such as PCs, MP3s, PDAs, digital cameras and mobile phones are being released. And data communication between these communication devices is increasing.

A communication port is provided in the communication device for data communication between the communication devices, and a cable having a plug inserted into and connected to both ends of the communication device connects the communication device to mediate data communication.

The USB includes a main body having a built-in memory, and a plug coupled to one end of the main body. The exposed end is inserted and connected to the connection port of the communication device, and the other end of the plug is connected to the memory. The plug thus mediates data communication between the communication device and the memory of the USB. In broad terms, memory is a kind of communication device.

The plug for mediating data communication between communication devices includes a substrate and a plurality of connection terminals provided on the surface of the substrate.

The connection terminals of the plug are connected to the connection pins provided in the inserted connection port to mediate data communication. In the general plug, the connection terminal is provided only on one surface of the board.

Therefore, when the user inserts the plug into the connection port, always pay attention to the insertion direction.

In recent years, bidirectional plugs have been introduced that do not require attention to the insertion direction when the plug is inserted. The bidirectional plug arranges the connection terminals in symmetrical order on both sides of the substrate so that the connection terminal of the plug and the connection pin of the connection port are connected regardless of the insertion direction of the plug.

The connection port is provided with a plurality of connection pins connected to the connection terminal of the plug at the upper part (or the lower part), and a tension ground pin for pushing the substrate toward the connection pin at the lower part (or the upper part) so that the connection pin and the connection terminal contact each other. The bidirectional plug having both connection terminals on both sides of the substrate may not only connect the connection terminal of one side of the substrate to the ground pin but also connect the other side of the substrate to the tension ground pin, which may cause a short (short circuit) accident. Thus, the bidirectional plug is usually provided with means for preventing short circuits.

As a means of preventing a short, the contact between the connection terminal and the tension ground pin, such as the "USB plug having two sides selectively connectable to the USB port" or "2006.65658" electrical connector " There is a method of blocking itself using a mechanical structure, and a method of blocking using a circuit such as the Applicant's Patent Publication No. 2009-0120052 "bidirectional plug with a short prevention circuit".

The present invention is a bidirectional plug that prevents a short by using a mechanical structure, a bidirectional plug that surrounds the periphery of the substrate and prevents the short by using a square frame that the outer surface is in contact with the inner surface of the connection port as described in the published patent.

Many users want to feel that the plug is inserted into the connection port and the connection terminal is connected to the connection pin by hand, rather than being easily inserted without resistance when inserting the plug into the connection port. It is desired that the plug does not easily come off the connecting port. It is a plug with a square frame that can meet the needs of these users.

Figure 1 shows the plug of the published patent according to the prior art, the plug 40 is provided with a rectangular frame 400, a substrate 401 arranged in the center of the rectangular frame, both sides of the substrate The connection terminal 403 is included.

The substrate 401 is made of a flexible PCB, and when the plug 40 is inserted into the connection port 100, the substrate 401 contacts the protrusion 101 of the connection port and then bends to move forward through the surface of the protrusion. The connecting terminal 403 of and the connecting pin 102 of the protrusion part are connected.

The above-mentioned patent firstly has a problem in durability. That is, repeated long-term use is difficult. The flexible PCB 401 itself may have sufficient ductility to enable repeated bending and unfolding, but the connection terminal 403 provided on the PCB surface is made of a weak metal material (mainly copper). Therefore, the connection terminal 403, which is thinly plated on the surface of the flexible PCB 401, is repeatedly bent and unfolded with the flexible PCB, and cracking is generated if the repetition continues, and connection of the connection pin and the connection terminal is cracked. It becomes bad and does not provide stable data communication.

In addition, the patent discloses that there is always a risk that the flexible PCB 401 does not move forward through the surface of the protrusion after being in contact with the protrusion 101 of the connection port and is bent and damaged in place. In the drawing, the flexible PCB 401 is connected. Although shown as being bent to the surface of the protrusion with the pin 102, it is not possible to rule out the bent to the opposite side.

In addition, the published patent discloses that the connection terminal 403 provided on one surface of the flexible PCB 401 is in contact with the connection pin 102 on the protrusion 101, and the connection terminal 403 provided on the other surface has an inner surface of the square frame 400. It is structured to advance in contact with. That is, both connecting terminals are in contact with each other. Therefore, if the frictional force of both sides is large, the flexible PCB will not be smoothly advanced and bent. If the frictional force is small (if there is a gap), the connection between the connecting terminal and the connecting pin will not be made stable. If this wears out, the connection between the connecting terminal and the connecting pin will not be made stable.

The present invention is provided with a square frame so that the plug is strongly and stably inserted into the connection port as described above, excellent durability and repetitive long-term use, bidirectional plug stable connection of the connection terminal and the connection pin even in long-term use It is intended to provide.

The bidirectional plug having a square frame according to the present invention for achieving the above object is

A rectangular frame inserted into the connection port and having an outer surface thereof in contact with the inner surface of the connection port;

A hard substrate arranged at an inner center of the square frame;

Including four connection terminals (V, D +, D-, G) arranged in symmetrical directions on both sides of the substrate;

Regardless of the direction, the four connection terminals provided on one surface of the substrate are connected to the four ground pins provided on the connection port, respectively, and the four connection terminals provided on the other surface are tension ground pins provided on the connection port. It is a bidirectional plug with a rectangular frame that is non-contacting and can be connected without a short.

And inside the rectangular frame, bending prevention means for supporting the substrate arranged in the center to prevent bending of the substrate.

The bending preventing means

Support plates respectively interposed between the rectangular frame and the substrate;

It comprises an elastic body for elastically supporting the support plate in the inner rear of the square frame,

One side of the support plate is pushed back by the protrusion provided with the connecting pin is exposed so that the connection terminal provided on one surface of the substrate is connected to the connection pin, the other support plate to support the other surface of the substrate to prevent bending With

The bending preventing means

It is formed on both sides of the square frame, characterized in that it comprises a slit groove to support the both sides of the substrate is seated on the edge of the substrate.

The bidirectional plug according to the present invention having such a configuration has a rectangular frame so that the user can feel that the plug is connected to the connection pin by hand, and the plug is connected to the connection port by accidental external impact. It can be easily prevented from disconnecting, and the board and the connection terminal are durable two-way plugs that are stably inserted and connected to the connection port even after repeated long-term use without deformation such as bending and damage.

1 shows an example of a bidirectional plug according to the prior art;

Figure 2 is a perspective view according to one example of a USB and a connection port having a bidirectional plug having a square frame according to the present invention.

3 is a front view and a side view of a bidirectional plug and a connection port according to the present invention.

Figure 4 is a partial cutaway perspective view of the bi-directional plug is inserted into the connection port in accordance with the present invention.

5 is a perspective view showing various structures of the slit groove as a bending preventing means.

Hereinafter, a bidirectional plug according to the present invention will be described in more detail with reference to the accompanying drawings.

As shown in the drawings, the bidirectional plug 1 according to the present invention includes a substrate 10, a plurality of connection terminals V, D +, D-, and G provided on both surfaces of the substrate 10, and the substrate. It includes a rectangular frame 20 wrapped and supported on the inner surface of the connection port 30, and the bending preventing means 40 is provided on both sides of the square frame inner substrate to prevent the bending of the substrate.

The substrate 10 is generally made of a printed circuit board (PCB) 10, and is made of a hard material having a rigidity of at least a certain level, so that when the plug 1 is inserted into the connection port 30, Even if it hits the protrusion 39, it is not bent.

The end of the substrate 10 is preferably disposed inside the end of the rectangular frame 20 to be protected from external impact by the rectangular frame 20.

The substrate 10 is arranged in the longitudinal direction at the inner center of the rectangular frame 20 in a state of being erected in the plug 1 insertion direction so that one surface of the substrate 10 may be inserted into the connection port 30 in any direction. Contact with one surface of the protrusion 39 is provided with a connection pin (31 ~ 34).

In addition, an inclined surface is formed at an end or at one end of both the substrate 10 and the protrusion 39 so that the substrate may be advanced on the surface of the protrusion when the substrate 10 is in contact with the protrusion 39. It may be desirable to guide to help.

The four connection terminals (V, D +, D-, G) are arranged in a symmetrical direction on both sides of the substrate 10 so that the same arrangement order is achieved even when the substrate 10 is turned over, and a circuit pattern is formed on the PCB. That is, the substrate 10 is formed on both surfaces of the substrate 10 through a process such as plating, exposure, shape, and etching of the conductive material (eg, copper).

The connection terminals V, D +, D-, and G include a power terminal V for supplying driving power, a ground terminal G for grounding, and two data terminals D + and D- for data communication. do.

The four connection terminals V, D +, D-, and G are arranged in the order of symmetrical directions on both sides of the substrate 10.

In other words, if the ground terminal (G), two data terminals (D +, D-), and the power terminal (V) are arranged from left to right on one side of the substrate 10, the other side of the power terminal (V) and two data Terminal (D +, D-), ground terminal (G) arranged in order to turn over the board 10, the other side comes to the position of one side, the other side is the ground terminal (G), two data terminals (D +, D-), power terminal (V) is arranged from left to right.

The four connection terminals V, D +, D-, and G are connected to four connection pins 31, 32, 33, and 34 provided inside the connection port 30, respectively, so that data communication can be performed.

The arrangement position and dimensions of the connection port 30, the connection pins 31, 32, 33, 34 and the tension ground pins 35, 36 provided inside the connection port are internationally standardized.

Using the USB connection port 30 shown in Fig. 3, for example, the width of each of the four connection pins 31, 32, 33, and 34 is 0.9 mm, between the center of the power supply pin 31 and the ground pin 34. The distance is 7mm, the distance between the center of the two data pins (32, 33) is 2mm, the distance between the ground pin 34 and the data pins (32, 33) and the distance between the power pin (31) and the data pins (32, 33) 1.3mm, the width of the two tension ground pins (35, 36) is 1.9mm, respectively, the separation distance of the two tension ground pins (35, 36) is 5mm,

The inner horizontal width of the connection port is 12.5 mm and the vertical width is 5.12 mm, and one surface of the protrusion 39 on which the connection pins 31, 32, 33, and 34 are arranged is centered (or from the center to the other side of the connection port 30). Slightly biased), and the tension ground pins 35 and 36 are provided on the inner surface of the connection port facing the connection pins 31, 32, 33 and 34.

In addition, the connection pins 31 of the connection port 30 corresponding to the connection terminals V, D +, D-, and G provided on the substrate 10 of the plug 1 in accordance with the international standard of the connection port 30, respectively. The manufacturer manufactures the plug 1 so as to be connected only to, 32,33,34.

In the rectangular frame 20, the substrate 10 is arranged at an inner center thereof, and an outer surface thereof is in contact with an inner surface of the connection port 30. Since the outer surface of the rectangular frame is supported by the inner surface of the connection port, the tension ground pins 35 and 36 protruding from the inner surface of the rectangular frame are also in contact with the outer surface of the rectangular frame 20, so that the tension ground pins 35 and 36 are contacted. It blocks the connection to the connecting terminal arranged inside the rectangular frame.

The outer surface of the rectangular frame 20 inserted into the connection port 30 is supported by the tension ground pins 35 and 36 and the elastic pins 37 projecting on the inner surface of the connection port, so that the external impact does not depart from the connection port. .

Since the square frame is repeatedly contacted friction between the tension ground pin (35, 36) and the elastic pin (37), it is preferably made of a metal material resistant to wear.

The bending preventing means 40 is provided on the inner side of the rectangular frame 20 and supports the substrate 10 so that the substrate 10 is inserted and advanced to contact the protrusion 39 or after the substrate 10 is inserted. ) And the protrusion 39 are prevented from bending due to contact resistance between each other. The bending preventing means 40 may be a slit groove 45, may be a support plate 41, or both 41 and 45. And other means than the slit groove or the support plate.

The bending preventing means 40 may be a slit groove 45 formed in the longitudinal direction on the side of the rectangular frame 20, the edge of the substrate is seated to support both sides of the substrate as shown in FIG.

5 (a) shows the structure of the slit groove 45 protruding from the inner surface to the outer surface in the longitudinal direction on the side of the rectangular frame 20, the edge of the substrate 10 is seated, (b) The structure of the slim groove 45 in which the two projections protrude on the inner surface of the side of the frame 20 to seat the edge of the substrate 10 is shown, and (c) the incision after cutting the side of the square frame 20 The structure of the slim groove 45 is shown by bending the two parts inwardly, the edge of the substrate 10 is seated in the two bent incision.

In addition, the bending preventing means 4 may include a support plate 41 and an elastic body 43 as shown in FIGS. 3 and 4.

The support plate 41 is interposed so as to be movable between both surfaces of the substrate 10 and the inner surface of the rectangular frame 20, the elastic body 43 is the support plate in the inner rear of the rectangular frame 20 The rear end of 41 is elastically supported.

Thus, when the plug 1 is inserted into and coupled to the connection port 30, the support plate 41 on one side is pushed back by the protrusion 39 provided with the connection pins 31 to 34 so as to be attached to one surface of the substrate 10. Exposed connecting terminals (V, D +, D-, G) to be connected to the connecting pins (31, 32, 33, 34), and the other support plate 41 is supported by the elastic body in place without retreating The other surface of the substrate 10 is supported to prevent bending.

In the above description of the present invention, the bidirectional plug having a rectangular frame having a specific shape and structure has been described with reference to the accompanying drawings. However, the present invention may be variously modified and changed by those skilled in the art. It should be interpreted as falling within the protection scope of the present invention.

Claims

A rectangular frame inserted into the connection port and having an outer surface thereof in contact with the inner surface of the connection port;

A hard substrate arranged at an inner center of the square frame;

It includes four connecting terminals (V, D +, D-, G) arranged in a symmetrical direction on both sides of the substrate so that even when the substrate is turned over, the same arrangement order;

Regardless of the direction, the four connection terminals provided on one surface of the substrate are connected to the four ground pins provided on the connection port, respectively, and the four connection terminals provided on the other surface are tension ground pins provided on the connection port. Bidirectional plug with a square frame that is non-contacting and can be connected without a short.
The method of claim 1,

And an anti-bending means for supporting the substrate arranged at the center of the rectangular frame to prevent the substrate from bending.
The method of claim 2, wherein the bending preventing means

Support plates respectively interposed between the rectangular frame and the substrate;

It comprises an elastic body for elastically supporting the support plate in the inner rear of the square frame,

One side of the support plate is pushed back by the protrusion provided with the connecting pin is exposed so that the connection terminal provided on one surface of the substrate is connected to the connection pin, the other support plate to support the other surface of the substrate to prevent bending Bidirectional plug with square frame.
The method of claim 2 or 3, wherein the bending preventing means

The two-way plug is formed on both sides of the square frame, the edge of the substrate is seated, including a slit groove for supporting both sides of the substrate.