KR100878185B1 - Apparatus for Connecting USB With Means For Protecting Terminal - Google Patents

Abstract

The present invention provides a USB connection device including a USB connection terminal protection means of a USB device, comprising: a main body of a USB device; A connection terminal case which protrudes to one side of the main body, the front surface of which is open to be connected to an external USB device, and a connection terminal is installed on an inner side thereof, and a fixing groove formed on an outer side thereof to be fixed when connected to an external USB device; A movable cover which is accommodated in the main body and the connection terminal case and selectively opens and closes the connection terminal of the connection terminal case by sliding in the longitudinal direction of the main body; And moving means for allowing the movable cover to slide in the longitudinal direction of the main body inside the main body and the connection terminal case, and a means for protecting the connection terminal is integrally combined with the main body to cause loss of loss. It protects the connection terminal from the outside without the possibility of minimizing the size of the product.

USB, Memory, Terminal, Cover

Description

FSS access device with connecting terminal protection means {Apparatus for Connecting USB With Means For Protecting Terminal}

1 is an exploded perspective view schematically showing a USB memory according to the prior art;

2 is a perspective view schematically showing another form of the USB memory according to the prior art;

3 and 4 are perspective views showing a USB connection device having a connection terminal protection means according to a first embodiment of the present invention;

5 and 6 are side cross-sectional views schematically showing an example of a movement means of a USB memory having a connection terminal protection means according to the first embodiment of the present invention;

7 is a side cross-sectional view schematically showing another form of the moving means shown in FIGS. 5 and 6;

8 is a configuration diagram schematically showing another example of a moving means of a USB connection device having a connection terminal protection means according to the first embodiment of the present invention;

9 is a configuration diagram schematically showing another form of the vehicle shown in FIG.

10 is a configuration diagram schematically showing another form of the vehicle shown in FIG.

11 and 12 are perspective views showing a USB connection device having a connection terminal protection means according to a second embodiment of the present invention;

13 and 14 are side cross-sectional views schematically showing an example of a moving means of a USB connection device having a connection terminal protection means according to a second embodiment of the present invention;

15 is a side cross-sectional view schematically showing another form of the vehicle shown in FIGS. 13 and 14;

16 is a configuration diagram schematically showing another example of a moving means of a USB connection device having a connection terminal protection means according to a second embodiment of the present invention;

17 is a configuration diagram schematically showing another form of the transportation means shown in FIG.

18 is a configuration diagram schematically showing another form of the moving means shown in FIG.

-Explanation of symbols for the main parts of the drawings-

110, 210: main body 120, 220: connection terminal case

121, 221: connection terminal 122, 222: fixing groove

130, 230: removable cover 223: guide portion

224: guide groove 141, 241: incision groove

142, 242: protrusions 143, 243: first rack gear

144, 244: second rack gear 145, 245: pinion gear

150, 250: elastic member

The present invention relates to a USB connection device, and more particularly, by moving to a connection terminal case side of a USB device, by a movable cover to selectively expose the connection terminal to the outside, so that the connection terminal is not contaminated with foreign matter such as dust. In addition, the present invention relates to a USB connection device having a connection terminal protection means capable of miniaturizing a product size.

Generally, USB (Universal Serial Bus) is a term used to refer to a bus standard for connecting a PC and a peripheral device. The USB is used for various devices such as personal computers, digital cameras, mobile phones, MP3s, PMPs, PDAs, and memory sticks. have.

Among them, the USB memory stick receives the necessary data through the USB interface supported by the host system and stores it in the flash memory, which is a nonvolatile memory device, and provides the stored data back to the host system when needed to store and move large amounts of data. It is a portable data storage device.

This USB memory stick is not only convenient and stable compared to conventional portable storage devices such as floppy disks, but also has a compact and portable stick type for data backup of host systems, personal computers, laptops, MP3s, digital cameras, etc. Widely used.

1 is an exploded perspective view schematically showing a USB memory according to the prior art. As shown in the drawing, the USB memory 1 is largely composed of a main body 10 and a cover 20, and data is stored in the main body 10. And a printed circuit board (PCB) including a memory for storing and reproducing the memory and a control unit for controlling the storage and reproducing of the data, and the connection terminal 30 formed on the front surface of the main body 10 includes a computer, an MP3. By connecting a USB memory device to a device such as a digital camera, data may be stored in the memory, or data stored in the memory may be reproduced through the device.

On the other hand, the cover 20 serves to protect the outside of the connection terminal 30 formed on the front of the main body 10, when using the USB memory, the cover 20 is separated from the main body 10, the USB memory When not in use, the cover 20 is inserted outside the connection terminal 30 on the front of the main body 10 to protect the connection terminal 30.

Here, the engaging projection 40 is formed on the rear side of the connecting terminal 30, when the cover 20 is inserted into the connecting terminal 30 outside, the cover 20 is coupled to the main body by the engaging projection 40. Combined.

Therefore, when the USB memory is not used, the cover 20 is coupled to the outside of the connection terminal 30, thereby preventing foreign substances such as dust from flowing into the connection terminal 30.

However, the cover of the conventional USB memory is made in a removable manner from the main body 10, so that the cover 20 is placed in a state separated from the main body 10 depending on whether the USB memory is used. If the user carelessly for a while, the problem that can lose the cover 20 occurred.

In addition, the cover 20 is coupled to the main body 10 and the engaging protrusion 40, so that the engaging projection 40 is damaged due to frequent detachment or impact of the cover 20 and the main body 10 from the outside. In this case, there was a problem that the cover 20 is not normally coupled to the main body 10.

On the other hand, Figure 2 is a perspective view schematically showing another form of the USB memory according to the prior art, as shown, the cover 20 is hinged to the front and back of the main body 10, respectively, of the main body 10 Sliding parallel to the front and back.

Therefore, when the USB memory 1 is not used, the connection terminal 30 can be protected by sliding the cover 20 so as to cover the connection terminal 30 so as to be perpendicular to the main body 10.

In addition, since the cover 20 is not a structure that is detachable from the main body 10, but is rotated to the left or right in a hinged state to the main body 10, there is no fear of losing the cover 20.

However, in the case of such a USB memory, since the cover 20 is coupled to the outside of the main body 10, the overall size of the product is inevitably increased, the disadvantage that is not suitable for the recent trend of miniaturization of USB memory have.

The present invention has been invented to solve the above problems, the means for protecting the connection terminal is integrally combined with the main body to protect the connection terminal from the outside without fear of loss and at the same time downsizing the size of the USB product It is an object of the present invention to provide a USB connection device having a connection terminal protection means.

According to a first embodiment of the present invention for achieving the above object, a USB connection device having a USB connection terminal protection means of a USB device,

Main body of the USB device; A connection terminal case installed on the main body, the front surface of which is opened to be connected to an external USB device, and a connection terminal being installed on an inner side thereof, and a connection terminal case having an outer groove formed on a fixed groove to be fixed when connected to an external USB device; A movable cover accommodated in the main body and the connection terminal case and sliding in the longitudinal direction of the main body to open and close the connection terminal of the connection terminal case; And moving means for sliding the movable cover in the longitudinal direction of the main body.

According to a second embodiment of the present invention, there is provided a USB connection device including USB connection terminal protection means of a USB device, comprising: a main body of a USB device; A connection terminal case installed at the main body and connected to an external USB device, the connection terminal case fixing the connection terminal at a bottom thereof; A movable cover accommodated in the main body and sliding in a longitudinal direction of the main body to open and close an upper surface of the connection terminal; And moving means for sliding the movable cover in the longitudinal direction of the main body.

Preferably, in order to guide the sliding of the movable cover, characterized in that it further comprises a guide portion protruding in the sliding direction of the movable cover on one side of the connection terminal case.

Here, the moving means, the cutting groove cut along the longitudinal direction on one side of the main body; And a protrusion formed integrally with the movable cover and inserted into the incision groove to protrude outward.

Preferably, the moving means, one side is connected to the movable cover, the other side is characterized in that it comprises an elastic member connected to the main body.

In addition, the moving means, the cutting groove is cut along the longitudinal direction on one side of the main body; A pair of first rack gears each of which extends along the inner surface of the main body from both end portions of the movable cover and has a gear thread in a direction facing each other; A second rack gear installed between the pair of first rack gears in parallel with the first rack gear, having a protrusion formed to slide into the cutout groove, and having gear threads formed on both sides thereof; And a pinion gear installed to mesh with the first rack gear and the second rack gear so that the first rack gear moves in a direction opposite to the second rack gear when the second rack gear moves. do.

Preferably, the moving means, one side is connected to the second rack gear, the other side is characterized in that it comprises an elastic member connected to the main body.

In addition, the movement means, one side is connected to the first rack gear, the other side is characterized in that it comprises an elastic member connected to the main body.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a USB connection device having a connection terminal protection means according to the present invention.

(First embodiment)

3 and 4 are perspective views showing a USB connection device having a connection terminal protection means according to a first embodiment of the present invention.

3 and 4, the USB connection device with a connection terminal protection means according to the first embodiment of the present invention is the main body 110, the connection terminal case 120, the movable cover 130 of the USB device ), And a moving means.

The main body 110 accommodates a printed circuit board (PCB) having a memory for storing and reproducing data therein and a control unit for controlling the memory to store and reproduce the data.

The connection terminal case 120 extends to protrude in one direction of the main body 110, and the inside thereof communicates with the inside of the main body 110.

In addition, the front surface is open to be connected to an external USB device such as a computer, an MP3, a digital camera, the connection terminal 121 is installed on the inner side, the main body 110 when the connection terminal case 120 is connected to the external USB device The fixing groove 122 is formed on the outer side surface thereof so that) is fixed and the connection terminal 121 is fixed.

The movable cover 130 is accommodated in the main body 110 and the connection terminal case 120, and slides along the longitudinal direction of the main body 110 to selectively open and close the front surface of the connection terminal case 120.

The moving means serves to allow the movable cover 130 to slide along the longitudinal direction of the main body 110 and the connection terminal case 120 inside the main body 110 and the connection terminal case 120.

3 to 10, the moving means of the USB connection terminal having the connection terminal protection means according to the first embodiment of the present invention will be described in detail.

First, FIGS. 5 and 6 are side cross-sectional views schematically showing an example of a moving means of a USB connection device having a connection terminal protection means according to the first embodiment of the present invention.

3 to 6, the moving means is inserted into the cutting groove 141 and the cutting groove 141 of a predetermined size cut along the longitudinal direction on the front or rear surface of the main body 110 to move the sliding cover 130. And a protrusion 142 formed integrally with the protrusion.

That is, the protrusion 142 integrally formed with the movable cover 130 is inserted into the cutout groove 141 in the interior of the main body 110 to protrude to the outside of the main body 110, and the user touches the protrusion 142. When sliding to, the movable cover 130 formed integrally with the protrusion 142 according to the movement of the protrusion 142 also makes a sliding movement inside the main body 110.

In other words, the protrusion 142 inserted into the incision groove 141 serves as a lever for sliding the movable cover 130, and the movable cover 130 is slid and connected according to the sliding movement of the protrusion 142. The front of the terminal case 120 is selectively closed.

For example, when the protrusion 142 is slid to the upper side of the main body 110, that is, the connection terminal case 120, the movable cover 130 also slides to the upper side, as shown in FIGS. 3 and 5, and the connection terminal The open front of the case 120 is closed.

On the contrary, when the protrusion 142 is slid to the lower side of the main body 110, the movable cover 130 is also slid to the lower side to open the front surface of the connection terminal case 120 as shown in FIGS. 4 and 6.

Therefore, when not using the USB connection device, as shown in Figs. 3 and 5, by sliding the protrusion 142 to the front side of the main body 110 to close the open front of the connection terminal case 120, Foreign matters such as dust and the like can be prevented from the 121.

In addition, the movable cover 130 for protecting the connection terminal 121 is not formed outside the main body 110, but is formed to slide inside the main body 110 and the connection terminal case 120, USB connection It is possible to minimize the size of the entire device.

7 is a side cross-sectional view schematically showing another form of the moving means shown in Figures 5 and 6, as shown, one side is connected to the rear end of the movable cover 130, the other side the main body 110 It includes an elastic member 150, such as a spring connected between the inner end of the.

As such, when the elastic member 150 is provided between the movable cover 130 and the inner end of the main body 110, when the connection terminal case 120 is inserted into an external USB device, the protrusion 142 is manually removed. No need to slide

That is, when the connection terminal case 120 is inserted into an external USB device, the protruding connection pin of the external USB device pushes the movable cover 130 into the main body 110, and conversely, the connection terminal case 120 When it is separated from the external USB device, the movable cover 130 is pushed to the front side of the connection terminal case 120 by the elastic force of the elastic member 150.

Accordingly, the movable cover 130 may selectively close the open front surface of the connection terminal case 120 without directly sliding the protrusion 142.

On the other hand, in the figure is shown that the elastic member 150 is connected between the inner end of the main body 110 and the movable cover 130, the other side of the elastic member 150 is connected to the central side of the main body 110, One side may also be connected to the removable cover 130.

That is, the elastic member 150 is connected between the inner surface of the main body 110 and the movable cover 130 so that the movable cover 130 slides to the rear side when connected to the external USB device, and connected to the external USB device. When the removable cover 130 is configured to slide forward, the installation position of the elastic member 150 may be anywhere inside the main body 110.

8 is a configuration diagram schematically showing another example of a moving means of a USB connection device including a connection terminal protection means according to the first embodiment of the present invention.

3, 4 and 8, the moving means is a predetermined size of the cutting groove 141 cut along the longitudinal direction on the front or back of the main body 110 and the main body from both ends of the movable cover 130, respectively The first rack gear 143 between the pair of first rack gears 143 and the pair of first rack gears 143 extending along the inner surface of the 110 to form a gear thread in a direction facing each other. The second rack gear 144 is installed in parallel with, and the protrusion is formed so as to be inserted into the cutting groove 141 from the inside of the main body 110, the sliding groove in the longitudinal direction of the cutting groove 141 and the gear thread formed on both left and right sides, respectively. And, respectively, positioned between the first rack gear 143 and the second rack gear 144 to engage with the first rack gear 143 and the second rack gear 144 and to slide the second rack gear 144. The first rack gear 143 includes a pinion gear 145 to move in a direction opposite to the second rack gear 144.

That is, when the second rack gear 144 is slid in the front direction of the main body, the pinion gear 145 meshed with the second rack gear 144 rotates clockwise (in FIG. 8), and the pinion gear 145 is rotated. The pair of first rack gears 143 meshed with the pinion gear 145 is slid in the rear direction of the main body 110 by the rotation of.

Therefore, as the first rack gear 143 moves, the movable cover 130 is also moved in the rear direction of the main body 110 to open the front surface of the connection terminal case 120.

On the contrary, when the second rack gear 144 is slid in the rear direction of the main body 110, the pinion gear 145 is rotated in the counterclockwise direction (in FIG. 8), so that the first rack gear 143 is The front surface of the connection terminal case 120 is closed by sliding in the front direction of the main body 110.

9 is a configuration diagram schematically showing another form of the movement means shown in Figure 8, as shown, the movement means, one side is connected to the rear end of the second rack gear 144, the other side the main body It may include an elastic member 150, such as a spring connected between the inner end of the (110).

Therefore, as described above, the movable cover 130 selectively closes the front surface of the connection terminal case 120 without the need to directly slide the protrusion of the second rack gear 144 by the elastic force of the elastic member 150. can do.

On the other hand, Figure 10 is a schematic view showing another configuration of the moving means shown in Figure 8, as shown, the moving means, one side is connected to a pair of first rack gear 143, The other side may include an elastic member 150 such as a spring connected between the inner ends of the main body 110.

Therefore, the movable cover 130 selectively closes one side of the connection terminal case 120 without the need to directly slide the protrusion of the second rack gear 144 by the elastic force of the elastic member 150, thereby connecting It is possible to prevent the terminal 121 from being contaminated by foreign matter such as dust.

In this case, although the elastic member 150 is shown connected between the inner end of the main body 110 and the first rack gear 143 or the second rack gear 144, as described above, the elastic member 150 ) May be installed anywhere inside the main body 110.

(Second embodiment)

11 and 12 are perspective views showing a USB connection device having a connection terminal protection means according to a second embodiment of the present invention.

11 and 12, the USB connection device having a connection terminal protection means according to the second embodiment of the present invention, as in the first embodiment of the present invention, the main body 210, the connection terminal case 220 ), A movable cover 230, and a moving means.

The main body 210 accommodates a printed circuit board (PCB) having a memory for storing and reproducing data therein and a control unit for controlling the memory to store and reproduce the data.

The connection terminal case 220 extends to protrude in one direction of the main body 210, and a connection terminal 221 is installed on one side to be connected to an external USB device, and the main body 210 when connected to an external USB device. Is fixed to the USB device so that the fixing groove 222 (see Fig. 13) is formed on the other side so that the connection terminal 221 is fixed.

That is, the connection terminal case 220 fixes the connection terminal 221 on the bottom of the connection terminal 221 for connecting with an external USB device.

At this time, the connection terminal case 220 is formed to about half the thickness of the connection terminal case 120 in the first embodiment shown in Figure 3, the interior does not need to communicate with the inside of the main body 210.

The movable cover 230 is accommodated in the main body 210 and is slid along the longitudinal direction of the main body 210 to one side of the connection terminal case 220 in which the connection terminal 221 is installed, that is, the upper surface of the connection terminal 221. Selectively open and close the

That is, the movable cover 230 is interviewed with one side of the connection terminal case 220 in which the connection terminal 221 is installed to selectively cover one side of the connection terminal case 220.

The moving means serves to allow the movable cover 230 to slide in the longitudinal direction of the main body 210 and the connection terminal case 220 along one side of the inside of the main body 210 and the connection terminal case 220.

Accordingly, the movable cover 230 is slid in the same manner as the mobile phone of the slide type to selectively cover one side of the connection terminal case 220.

On the other hand, when looking at one side of the connection terminal case 220, protrudes in the direction toward the movable cover 230 at both ends of the connection terminal 221 in the center of the longitudinal direction, respectively, the direction in which the movable cover 230 is sliding A pair of guide parts 223 extending to each other are formed.

In addition, a guide groove 224 is formed on one side of the movable cover 230 facing one side of the connection terminal case 220 to engage and slide the guide portion 223.

Therefore, when the movable cover 230 is slid on one side of the connection terminal case 220, the movable cover 230 can be smoothly slid by the guide part 223 and the guide groove 224.

Hereinafter, referring to FIG. 11 to FIG. 18, the moving means of the USB connection device having the connection terminal protection means according to the second embodiment of the present invention will be described in detail.

First, FIG. 13 and FIG. 14 are side cross-sectional views schematically showing an example of a moving means of a USB connection device having a connection terminal protection means according to a second embodiment of the present invention.

11 to 14, the moving means is integrally formed with the movable cover 230 to be inserted into the cutting groove 241 and the cutting groove 241 cut along the longitudinal direction on one side of the main body 110 to slide. It includes a protrusion 242 formed.

That is, the protrusion 242 integrally formed with the movable cover 230 allows the movable cover 230 to slide toward the connection terminal case 220 from the inside of the main body 210 to cover one side of the connection terminal case 220. It acts as a lever.

For example, when the protrusion 242 is slid to the upper side of the main body 210, that is, the connection terminal case 220, the movable cover 230 is slid along one side of the connection terminal case 220, and thus FIGS. 11 and FIG. As shown in FIG. 13, one side of the connection terminal case 220 is covered to protect the connection terminal 221.

On the contrary, when the protrusion 242 is slid to the lower side of the main body 210, the movable cover 230 is slid inwardly of the main body 210, so that one of the connection terminal cases 220 is shown in FIGS. The side is opened so that the connection terminal 221 is exposed to the outside.

Accordingly, when not using the USB connection device, as shown in FIGS. 11 and 13, the protrusion 242 is slid to the front side of the main body 210 to close one side of the connection terminal case 220, thereby connecting the connection terminal ( It is possible to prevent foreign matter such as dust on the 221.

In addition, the movable cover 230 for protecting the connection terminal 221 is not formed on the outside of the main body 210, it is formed so as to slide inside the main body 210, it is possible to minimize the size of the entire USB connection device Can be.

FIG. 15 is a side cross-sectional view schematically showing another form of the moving means shown in FIGS. 13 and 14. As shown, the moving means has one side connected to the rear end of the movable cover 230, and the other side thereof. It may include an elastic member 250 such as a spring connected between the inner end of the main body 210.

That is, when the connection terminal case 220 is inserted into an external USB device, the protruding connection pin of the external USB device pushes the movable cover 230 into the inside of the main body 210, and conversely, the connection terminal case 220 is opened. When detached from an external USB device, the movable cover 230 is pushed to the front side of the connection terminal case 220 by the elastic force of the elastic member 250.

Accordingly, the movable cover 230 may selectively close one side of the connection terminal case 220 without directly sliding the protrusion 242.

On the other hand, as mentioned earlier, the elastic member 250 may be connected to the other side of the main body 210 in addition to the inner end of the main body 210.

16 is a configuration diagram schematically showing another example of a moving means of a USB connection device having a connection terminal protection means according to a second embodiment of the present invention.

11, 12 and 16, the moving means is a cutting groove 241 cut along the longitudinal direction on one side of the main body 210 and, respectively, from both ends of the movable cover 230 of the main body 210 It is installed parallel to the first rack gear 243 between the pair of first rack gear 243 and the pair of first rack gear 243 formed with gear threads in the direction facing each other extending along the inner surface. And a second rack gear 244 formed with a protruding portion to be inserted into the cutting groove 241 from the inside of the main body 210 and sliding in the longitudinal direction of the cutting groove 241 and having gear threads formed on both left and right sides thereof. Located between the first rack gear 243 and the second rack gear 244 respectively engaged with the first rack gear 243 and the second rack gear 244, the first rack during the sliding movement of the second rack gear 244 The gear 243 includes a pinion gear 245 to move in a direction opposite to the second rack gear 244.

That is, when the second rack gear 244 is slid in the front direction of the main body 210, the pinion gear 245 meshed with the second rack gear 244 rotates clockwise (in FIG. 16), and the pinion gear is rotated. The pair of first rack gears 243 engaged with the pinion gear 245 is slid in the rear direction of the main body 210 by the rotation of the 245.

Accordingly, as the first rack gear 243 is moved, the movable cover 230 is also moved toward the rear of the main body 210 to open one side of the connection terminal case 220, thereby connecting the connection terminal 221 to the outside. To be exposed.

On the contrary, when the second rack gear 243 is slid in the rear direction of the main body 210, the pinion gear 245 rotates in the counterclockwise direction (in FIG. 16), so that the first rack gear 243 is rotated. By sliding in the front direction of the main body 210, one side of the connection terminal case 220 is closed so that the connection terminal 221 is covered.

FIG. 17 is a schematic view showing another configuration of the moving means shown in FIG. 16. As shown, the moving means has one side connected to the rear end of the second rack gear 244, and the other side the main body. It may include an elastic member 250, such as a spring connected between the inner end of the (210).

Therefore, as described above, the movable cover 230 selectively closes one side of the connection terminal case 220 without the need to directly slide the protrusion of the second rack gear 244 by the elastic force of the elastic member 250. You can do that.

On the other hand, Figure 18 is a schematic view showing another configuration of the moving means shown in Figure 16, as shown, the moving means, one side is connected to a pair of first rack gear 243, The other side may include an elastic member 250 such as a spring connected between the inner ends of the main body 210.

Accordingly, the movable cover 230 selectively closes one side of the connection terminal case 220 without directly sliding the protrusion of the second rack gear 244 by the elastic force of the elastic member 250, thereby connecting It is possible to prevent the terminal 221 from being contaminated by foreign matter such as dust.

Here, the elastic member 250 may be connected to the other side of the main body 210 in addition to the inner end of the main body 210.

On the other hand, in the above-described embodiments and drawings, the USB connection device with a connection terminal protection means of the present invention is described and illustrated in the form of a USB memory stick, the present invention, in addition to a USB memory stick, personal computers, digital cameras, mobile phones It can be applied to all USB devices equipped with USB connection terminals such as MP3, PMP and PDA.

As described above, the present invention is accommodated in the main body of the USB connection device and is slid toward the connection terminal case, so that the connection terminal is not contaminated by foreign matter such as dust by a movable cover that selectively exposes the connection terminal to the outside. This prevents the USB device from malfunctioning.

Further, in the present invention, since the movable cover protecting the connection terminal is not detached from the main body, there is no fear of losing the movable cover.

In addition, the present invention has the effect that the size of the product can be reduced since the movable cover is slid inside the main body.

In the above, the present invention has been illustrated and described with respect to certain preferred embodiments. However, the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains may vary without departing from the spirit of the technical idea of the present invention described in the claims below. It will be possible to carry out the change.

Claims (8)

A USB connection device provided with USB connection terminal protection means of a USB device, Main body of the USB device; A connection terminal case installed on the main body, the front surface of which is opened to be connected to an external USB device, and a connection terminal being installed on an inner side thereof, and a connection terminal case having an outer groove formed on a fixed groove to be fixed when connected to an external USB device; A movable cover accommodated in the main body and the connection terminal case and sliding in the longitudinal direction of the main body to open and close the connection terminal of the connection terminal case; And It includes a moving means for sliding the movable cover in the longitudinal direction of the main body, The moving means, the cutting groove cut along the longitudinal direction on one side of the main body; A pair of first rack gears each of which extends along the inner surface of the main body from both end portions of the movable cover and has a gear thread in a direction facing each other; A second rack gear installed between the pair of first rack gears in parallel with the first rack gear, having a protrusion formed to slide into the cutout groove, and having gear threads formed on both sides thereof; And And a pinion gear installed to engage the first rack gear and the second rack gear so that the first rack gear moves in the opposite direction to the second rack gear when the second rack gear moves. USB connection device provided with connection terminal protection means. A USB connection device provided with USB connection terminal protection means of a USB device, Main body of the USB device; A connection terminal case installed at the main body and connected to an external USB device, the connection terminal case fixing the connection terminal at a bottom thereof; A movable cover accommodated in the main body and sliding in a longitudinal direction of the main body to open and close an upper surface of the connection terminal; And It includes a moving means for sliding the movable cover in the longitudinal direction of the main body, The moving means, the cutting groove cut along the longitudinal direction on one side of the main body; A pair of first rack gears each of which extends along the inner surface of the main body from both end portions of the movable cover and has a gear thread in a direction facing each other; A second rack gear installed between the pair of first rack gears in parallel with the first rack gear, having a protrusion formed to slide into the cutout groove, and having gear threads formed on both sides thereof; And And a pinion gear installed to engage the first rack gear and the second rack gear so that the first rack gear moves in the opposite direction to the second rack gear when the second rack gear moves. USB connection device provided with connection terminal protection means. The method of claim 2, In order to guide the sliding of the movable cover, USB connection device having a connection terminal protection means further comprises a guide portion protruding in the sliding direction of the movable cover on one side of the connection terminal case. The method according to any one of claims 1 to 3, The means for moving, An incision groove cut along one side of the body along a length direction; And It is formed integrally with the removable cover, USB connection device having a connection terminal protection means characterized in that it comprises a protrusion which is inserted into the incision groove protruding to the outside. The method according to any one of claims 1 to 3, The means for moving, One side is connected to the removable cover, the other side USB connection device having a connection terminal protection means characterized in that it comprises an elastic member connected to the main body. delete The method according to any one of claims 1 to 3, The means for moving, One side is connected to the second rack gear, the other side is provided with a connection terminal protection means characterized in that it comprises an elastic member connected to the main body. The method according to any one of claims 1 to 3, The means for moving, One side is connected to the first rack gear, the other side is provided with a connection terminal protection means characterized in that it comprises an elastic member connected to the main body.

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