KR200444404Y1 - A usb memory device with a function of preventing a static electricity - Google Patents

Abstract

This document discloses a portable USB memory device having an antistatic function by mounting a metal plate at the bottom of the plug without using a type A standard plug. By simplifying the assembly process through such a portable USB device there is an effect of improving the productivity of the portable USB device.

USB, plate

Description

A USB MEMORY DEVICE WITH A FUNCTION OF PREVENTING A STATIC ELECTRICITY}

This document relates to a USB memory device, and more particularly, to a USB memory device having an antistatic function.

USB (Universal Serial Bus) is an input / output standard used to connect a host computer and peripheral devices, and is widely applied to most peripheral devices such as portable memory devices, printers, and scanners.

The portable USB memory device of the present invention is designed to store data using a flash memory, which is a nonvolatile memory device, and to input / output data to and from a host computer using the USB standard. It is widely used as a portable memory device that replaces.

There are two types of plugs for USB communication: A type plugs and B type plugs. The standard plug of type A has a form in which four plug terminals for USB communication are arranged side by side horizontally, and the standard plug of type B has a form in which four plug terminals are arranged up and down by two.

Figure 1 shows a typical USB memory device equipped with a standard plug of type A.

As shown in Fig. 1A, the portable USB memory device 1 is equipped with an A type standard plug 3 in front of the main body 2 in which the flash memory is built. This type A standard plug 3 is provided with a setting member 5 made of an insulating plastic material on the lower side of a rectangular housing made of a conductive metal material. Four plug terminals 6 are set side by side in the horizontal direction.

At this time, the conductive housing grounds the storage device to the host computer to prevent the occurrence of static electricity and the like, and the insulating setting member 5 prevents the four plug terminals 6 from being electrically connected. Meanwhile, fixing holes 4 may be formed on upper and lower surfaces of the housing to prevent the storage device from being separated when the storage device is inserted into the host computer.

As shown in Fig. 1B, the standard plug 3 of type A has a predetermined size for standardization of components. According to this, the cross section of the type A standard plug 3 has a length in the horizontal direction of 12.00 ± 0.10mm and a height in the vertical direction of 4.50 ± 0.10mm. On the other hand, the size of the main body 2 to which the plug is mounted is made larger than the plug, but the length in the horizontal direction is limited to a maximum of 16.00mm, the height in the vertical direction is 8.0mm.

FIG. 2 shows a state in which a portable USB memory device equipped with a type A standard plug shown in FIG. 1 is inserted into a receptacle slot 10 of a host computer.

The receptacle slot 10 is provided with a setting member 12 made of an insulating plastic material on the upper side of the housing 11 made of a conductive metal material, and the lower surface of the setting member 12 is a standard of the A type. Four slot terminals 13 are set side by side in the horizontal direction so as to be in contact with the four plug terminals 6 mounted on the plug 3. As such, the four plug terminals 6 and the slot terminals 13 are in contact with each other, thereby making the USB communication between the USB memory device and the host computer.

On the other hand, the upper and lower surfaces of the housing 11 are elastically fitted into the fixing holes 4 formed on the upper and lower surfaces of the A-type standard plug 3 to press the plug, thereby being separated from the receptacle slot 10. The elastic protrusions 14 and 15 are formed to prevent them. The elastic protrusions 14 and 15 electrically connect the metal plug housing and the slot housing (which serves as a kind of ground) to perform the function of preventing the generation of static electricity.

When manufacturing a USB memory device using the conventional A type standard plug 3 configured as described above, the size of the A type standard plug 3 and the main body 2 of the storage device is different, so that they are manufactured as separate parts. And then assembled. In addition, the type A standard plug 3 itself is composed of several components such as a metal housing, a plastic setting member, and four plug terminals, which have to be manufactured separately and then assembled. Moreover, the four plug terminals had a very low productivity since the PCB board (not shown) embedded in the main body 2 had to be joined by soldering by the worker.

In the above-described background, a problem is to provide a portable USB memory device capable of implementing an antistatic function without using a standard plug of type A having a complicated assembly process.

A USB memory device having an antistatic function as a means for solving the above-described problems has four metal leads extending from a USB memory chip equipped with a flash memory on one surface of a plug portion extending from a main body of a portable USB memory device. On the other side of the plug portion, a metal plate is mounted.

The plate may be mounted to extend to the main body.

The plate is mounted to contact the steel frame of the receptacle slot when the USB memory device is inserted into the USB receptacle slot of the host computer.

The plate may be mounted except for a portion that comes into contact with a power terminal when the USB memory device is inserted back into the USB slot of a host computer.

The plug may have a reverse insertion prevention jaw.

The USB chip may be one of a plug type printed circuit board (PCB) type and a system in package (SIP) type.

According to the present invention, there is an effect of implementing an antistatic function by mounting a metal plate at the bottom of the plug without using a standard plug of type A, which is complicated in the assembly process.

In addition, there is an effect that can implement an antistatic function in a portable USB memory device implemented with a printed circuit board (PCB) integrated plug.

In addition, there is an effect that can implement an antistatic function in a portable USB memory device implemented with a SIP (System In Package) type plug.

In addition, reverse insertion prevention prevents reverse insertion or installs a metal plate except for a specific part of the bottom of the plug, that is, a part which may come into contact with the power terminal of the slot during reverse insertion, to prevent a + or-short phenomenon. It can work.

Hereinafter, embodiments of the present invention for a portable USB memory device having an antistatic function by mounting a metal plate at the bottom of the plug without using a type A standard plug will be described in more detail. do.

The USB chip included in the portable USB memory device refers to a chip equipped with a flash memory and a controller for controlling data input / output to the flash memory through USB communication with a host computer and provided with a plug terminal in the front. There are various types of these USB chips depending on the type of semiconductor layout design.

For example, USB chips have a thin small outline package (TSOP) and a very very thin small outline package (WSOP), solder ball arrays on the underside of the board, which are surface-mount packages with leads on both sides of the package. Ball Grid Array (BGA) with a chip, COB (Chip On Board) for wire bonding after the chip is directly bonded on the PCB, and SIP for mounting a plurality of circuits consisting of separate chips in one package. System In Package).

FIG. 3 illustrates an example in which another type of plug is implemented in a USB memory device including a USB integrated chip of a plug type PCB type according to an embodiment of the present invention.

The plug of the type developed to solve the problem of the USB storage device equipped with the standard plug of the A type described in the background art, as shown in Figure 3a, the front of the main body 21 of the portable USB memory device 20 An accommodating space is provided to extend, and four metal leads 24 extending from a PCB (Printed Circuit Board) board on which a flash memory is mounted are accommodated. This type of plug is hereinafter referred to as " PCB integrated plug " Reference numeral 22, which is not described, is a cover rotatably installed in the main body 21, and functions to protect the metal lead 24 from external foreign matter or impact by covering the plug portion when carrying.

And, as shown in Figure 3b, on the opposite side of the plug 23, which is housed four metal leads 24 extending from a PCB (Printed Circuit Board) board with a flash memory according to the present embodiment Metal plate 25 is mounted. Alternatively, as shown in FIG. 3C, the plate 25 of the metal material may be mounted on the side of the plug 23 according to the present embodiment. Of course, the plate 25 of the metal material may be mounted on both the opposite side and the side of the plug 23.

The metal plate 25 is mounted to be in contact with the steel frame of the receptacle slot when the USB memory device 20 is inserted into the USB receptacle slot of the host computer to perform an antistatic function.

Representative metals used as the material of the plate 25 include aluminum, steel, and the like. In other words, when the USB memory device is inserted into the receptacle slot by inserting an electrically conductive metal into the plug, the plate 25 and the receptacle slot are in contact with each other to be electrically connected to serve as a kind of ground to prevent the occurrence of static electricity. .

In addition, the plate 25 according to the present exemplary embodiment may be mounted to extend to the main body 21 as well as the plug 23 portion in FIG. 3B, and may be limited to the plug 23 portion in FIG. 3C. Of course it will. When the plate 25 is extended to the main body 21 and the plate 25 is mounted, the area of the plate 25 is widened, so that the antistatic effect is better.

In the PCB integrated plug 23 according to the present exemplary embodiment, as illustrated in FIG. 3D, a reverse insertion bump 26 may be formed. Here, the reverse insertion prevention jaw is implemented in some protruding shape on the front or both sides of the plug 23 to prevent the plug 23 from being inserted into the receptacle slot in reverse. Alternatively, as shown in FIG. 3E, the metal plate 25 according to the present exemplary embodiment may be mounted except for a portion 27 contacting the power terminal when the USB memory device is inserted back into the receptacle slot.

In this way, forming the anti-insertion prevention jaw 26 or mounting the plate 25 except for the specific portion 27 is performed in the receptacle slot with the plate 25 made of the bottom metal of the plug 23 according to the present embodiment mounted. When inserted, the four slot terminals 13, which are implemented to be in contact with the four metal leads 24 of the plug inside the receptacle slot, come into contact with one plate 25, resulting in a short between the + and-terminals. Because of this.

As shown in FIG. 3F, the PCB integrated plug 23 has a relatively low height t in the vertical direction because there is no housing surrounding the plug as compared to the standard plug of type A shown in FIG. 1B. have. In addition, the horizontal length of the plug, and the size of the main body can be made almost the same as in the case of the standard type A plug.

FIG. 4 illustrates a state in which the portable USB memory device having the integrated PCB plug shown in FIG. 3 is inserted into the receptacle slot 10 of the host computer.

Since the configuration of the receptacle slot 10 is the same as that described with reference to FIG. 2, a detailed description thereof will be omitted. The PCB integrated plug 23 is inserted into the receptacle slot 10 so that the metal lead 24 comes into contact with the slot terminal 13 so that the USB communication between the USB memory device and the host computer is performed.

As described above, the lower elastic protrusion 15 of the receptacle slot 10 serves as a ground by electrically connecting the slot housing with the metal plate 25 mounted on the lower end of the plug according to the present embodiment. And, this will perform a function to prevent the generation of static electricity.

The PCB-integrated plug 23 has the advantage of higher productivity due to the simpler assembly process of the plug components than the standard plug of the A type, and also has an antistatic function by mounting a metal plate 25 at the bottom of the plug. It is expected to be more useful than the standard type A plug.

FIG. 5 illustrates an example in which another type of plug is implemented in a USB memory device including a SIP type USB chip according to another embodiment of the present invention.

The plug developed in order to solve the problem of the UBS storage device equipped with a standard plug of type A described in the background art, as shown in Figure 5a, the UBS chip formed by the SIP technology in the portable UBS memory device 30 This is used. The USB chip formed by the SIP technology may be configured in a flat hexahedral shape, and the four metal leads 34 may be formed to be exposed on the upper pressure side of the chip. This type of plug is hereinafter referred to as " SIP type plug "

SIP technology is an extension of MCM (Multi Chip Module) technology and is a small MCM that has a special function by mounting a few chips and passive devices. However, parts technology such as MCM technology is started from an approach for improving the performance of the entire system and was not developed as a technology for a single system, whereas SIP technology is an implementation technology for single system integration.

In particular, the Stack-CSP, which is a representative SIP, is used in PDAs and mobile phones, which are portable digital electronic devices, to maximize the efficiency of packages by increasing the stacking density in the thickness direction through thin chip or thin package stacking. The chips used in this case are flash, SRAM, DRAM, analog devices, logic devices, and digital signal processors (DSPs), which reduce the size and weight of portable electronics and provide low-cost mounting technologies in a product-to-performance ratio.

The advantage of this package is that the development time is short and the device can be manufactured at low cost. Another important advantage of SIP technology is that semiconductor chips of different characteristics can be used in the same support member. That is, heterogeneous chips, such as silicon chips, GaAs chips, Ge chips, and SiGe chips, which are difficult to implement on one chip, may be combined into one package.

And, as shown in Figure 5b, if the SIP-type USB chip is mounted on the upper end of the main body 31, that is, the lower surface of the main body 31, that is, the metal plate 35 according to the present embodiment Is mounted. Alternatively, as shown in FIG. 5C, a metal plate 35 may be mounted on the side of the plug 33 according to the present embodiment. Of course, the metal plate 35 may be mounted on both the opposite side and the side of the plug 33.

 As described above, the metal plate 35 is mounted to contact the steel frame of the receptacle slot when the USB memory device 30 is inserted into the USB receptacle slot of the host computer, thereby performing an antistatic function.

In FIG. 5B and FIG. 5C, the metal plate 35 according to the present embodiment is attached to cover the entire surface of the lower end of the main body. It will be appreciated that a portable USB memory device may be limitedly attached to the plug portion 33 that is inserted into the receptacle slot.

In the SIP type plug 33 according to the present exemplary embodiment, as shown in FIG. 5D, a reverse insertion prevention jaw 36 may be formed to prevent the plug 33 from being inserted into the receptacle slot in the reverse direction. Alternatively, as shown in FIG. 5E, the metal plate 35 according to the present exemplary embodiment may be mounted except for a portion 37 contacting the power terminal when the USB memory device is inserted back into the receptacle slot. .

As such, forming the reverse insertion barrier 36 or mounting the plate 35 without the specific portion 37 is implemented to contact the four metal leads 34 of the plug inside the receptacle slot as described above. Slot terminals 13 are in contact with one plate 35 according to the present embodiment to prevent the risk of a short between the + and-terminals.

As shown in FIG. 5F, the SIP type plug 33 has a relatively low height t in the vertical direction because there is no housing surrounding the plug as compared with the standard plug of type A shown in FIG. 1B. have. In addition, the horizontal length of the plug may be made almost the same as in the case of the standard plug of the A type, but the size of the main body may be made the same as the plug 33 according to the characteristics of the SIP US chip.

The portable USB memory device having the SIP type plug 33 formed according to the present embodiment additionally has a lid or a rotatable which can be fitted to cover the plug portion of the main body to protect the metal leads 34 from external dust or impact. The cover may be additionally installed, the cover implemented in the slide type or the cover implemented in the hinge type.

FIG. 6 shows a state in which the portable USB memory device equipped with the SIP type plug shown in FIG. 5 is inserted into the receptacle slot 10 of the host computer.

Since the configuration of the receptacle slot 10 is the same as that described with reference to FIG. 2, a detailed description thereof will be omitted. In the SIP type plug 33, the metal lead 34 is in contact with the slot terminal 13 while the plug 33 is inserted into the receptacle slot 10, thereby performing the USB communication between the USB memory device and the host computer.

As described above, the lower elastic protrusion 15 of the receptacle slot 10 electrically connects the slot housing with the metal plate 35 mounted on the lower end of the SIP type plug 33 according to the present embodiment. To serve as a ground. And, this will perform a function to prevent the generation of static electricity.

The SIP type plug 33 has the advantage that the assembly process of the plug component is simpler than the standard plug of the A type, and thus the productivity is high, and the design is also excellent. In addition, by mounting a metal plate 35 at the bottom of the plug, it also has an antistatic function and is expected to be more useful than the standard plug of the A type.

Although described above with reference to the drawings and embodiments, those skilled in the art will understand that the present invention can be modified and changed in various ways without departing from the technical spirit of the present invention described in the claims below. Could be.

Figure 1 shows a typical USB memory device equipped with a standard plug of type A.

FIG. 2 shows a state in which a portable USB memory device equipped with a type A standard plug shown in FIG. 1 is inserted into a receptacle slot 10 of a host computer.

3 illustrates an example of another type of plug implemented in a USB memory device including a USB integrated chip type USB chip in accordance with an embodiment of the present invention.

4 illustrates a state in which a portable USB memory device equipped with a PCB integrated plug shown in FIG. 3 is inserted into a receptacle slot of a host computer.

5 illustrates an example of another type of plug implemented in a USB memory device including a SIP-type USB chip according to another embodiment of the present invention.

FIG. 6 illustrates a state in which a portable USB memory device equipped with a SIP type plug shown in FIG. 5 is inserted into a receptacle slot of a host computer.

<Description of the code for the main configuration of the drawings>

20, 30: USB memory device 21, 31: main body

23, 33: plug 24, 34: metal lead

25, 35: plate 26, 36: back insertion bump

Claims (6)

One side of the plug portion extending from the main body of the portable USB memory device is mounted to expose the metal leads extending from the USB chip equipped with the flash memory, and the other side of the plug portion is mounted with a metal plate, The plate is in contact with the still frame of the receptacle slot when the USB memory device is inserted into the USB receptacle slot of the host computer, and is in contact with at least one of the power terminals when the USB memory device is inserted back into the slot. USS memory device with an anti-static function, characterized in that the portion is mounted except. The method according to claim 1, The plate is extended to the main body, it characterized in that the USB memory device having an antistatic function. delete delete The method according to claim 1, The plug portion, a reverse insertion prevention jaw is formed, characterized in that the USB memory device having an antistatic function. The method according to claim 1, The UBS chip is, the plug-in PCB (Printed Circuit Board) type and SIP (System In Package) type, characterized in that the USB device with an anti-static function.

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