TW201804677A - USB port lock device - Google Patents

Abstract

This invention provides an USB port lock device which renders blockage of the USB port hard to be released to fulfill high reliability of security. In an USB port lock device L, a plug case 7 is inserted into a USB port to block the port and locks the blockage state by a locking pawl 811, which protrudes from a hole 73 of the plug case 7, fastening a slit 92 of an outer frame 91 of the USB port. In addition, the blockage state is held by a cylinder lock 2 in a locked state. To unplug the plug case 7 from the USB port, a specific key is inserted into a key hole 40 of the cylinder lock 2 to unlock the cylinder lock 2 and a lock release unit 41 releases the lock by pushing an inner cylinder 4 to the side of the plug case 7.

Description

USB plug interface blocking device

The invention relates to a USB plug-in interface blocking device, which inserts a plug-in case into a USB (Universal Serial Bus) plug-in interface (plug-in port) provided in a personal computer or the like, and plugs it in, and borrows The locking claw provided in the insertion case is fastened to the slit of the outer frame of the USB plug interface and is blocked to prevent access to the USB plug interface to prevent information leakage.

Nowadays, personal computers are rapidly spreading. A large amount of information is stored and stored in personal computers. On the other hand, in order to steal the above information, improper access to personal computers and information leakage continue to occur.

In the case of improper access to this personal computer, in recent years, leakage of information caused by access to the USB plug interface has become a problem.

As for the USB plug interface, it is well-known that as long as an external memory device such as a USB memory is connected, the data inside the personal computer can be simply copied, so measures must be taken to prevent access to the USB plug interface.

Therefore, in order to make access to the USB plug-in interface inaccessible. Yes, by inserting the plug-in case into the USB plug-in connector and plugging it, and locking the claw provided in the plug-in slot with a slit on any side of the outer frame of the USB plug-in connector to block it, The USB plug interface blocking device (USB blocking mechanism and release mechanism) to prevent information leakage has been disclosed in Japanese Utility Model Registration No. 3135047 (paragraph 0009 to paragraph 0018, Figures 5 to 7).

In the USB plug interface blocking device of this document, a frame (insertion case) is used, and the frame system holds the same shape as the USB device (male terminal) used as a general specification and has an opening. . Insert the USB blocking mechanism into the USB connector through this opening. The female terminal of the USB plug interface of the general specification is formed with a cutout (slit) and a compression spring formed on the plane portion of the outer frame, and a hole is provided in the frame in a form corresponding to the position. The material of the frame is the same as the existing USB device (male terminal). The insertion part can be non-ferrous metal, and the handheld part can be plastic, but because it is not required to be electrically connected, it can also be all non-conductive material. Then, the gap between the hole and the cutout is used to plug and block the USB plug interface. That is, the claw portion is provided so as to protrude from the hole of the frame body, and the claw portion is arranged to be engaged with the gap of the notch of the USB plug interface, so when the USB blocking mechanism is inserted, it will fully engage and not fall off.

In order to form such a structure, the claw portion is connected to a guide portion that is connected from the claw portion to the end portion of the frame body that does not have an opening. When the USB blocking mechanism is inserted, the guide portion is set so that the claw portion enters the gap provided in the cutout while holding the position with a little flexibility, and the claw portion is surely engaged and engaged with the gap. The material of the guide is preferably plastic. It is preferably non-conductive in nature.

In addition, in general, the holes of the USB device (male terminal) are provided with two places on the same plane according to the cutouts. Therefore, each of the claw portion and the guide portion may be one, and it is preferable to provide two each in terms of strength. Moreover, a cutout on the side of the USB plug interface can also be used, and a hole and a claw portion can be provided corresponding to the cutout.

In this way, the claw portion is completely engaged with the USB plug interface and cannot be removed. If you forcefully remove it, it will damage the USB plug interface and the USB blocking mechanism. As a result, the plug interface can be blocked without using software or the like at all.

In addition, the USB blocking mechanism of this document is provided with a blocking releasing receiving section which is connected to the guide section and receives the blocking releasing member. As shown below, it is used to receive the blocking release member and remove the claw portion from the gap of the cutout. Therefore, when the claw portion and the guide portion are provided in two places corresponding to the cutouts on the plane of the USB plug interface, the blocking release receiving portion is preferably a plate shape that joins between the two guide portions and faces the end without opening The part is arranged diagonally.

In addition, as described above, the claw portion, the guide portion, and the lock release receiving portion may use the side cutouts instead of two places. For example, the cut-off receiving section that receives the block-release canceling member may be provided by using holes, claws, and guides that are respectively provided in the two cutouts on the opposite side, and that the two guides are joined and connected.

In addition, as long as the lock release receiving part can receive the lock release member and remove the claw, it can be a hard material or a flexible element. The shape of the material can be appropriately changed in accordance with the shape of the lock release member.

In addition, the frame is provided on the end surface of the frame without openings, and a film serving as an entrance of the lock release member and a cavity toward the lock release receiving portion are provided. That is, in order to remove a blockade that has been blocked once, the user can only remove the blockade release member, break the film to make it open to the hole, and advance it, and make the blockade release member resist the blockade release reception. And push the guide down or away to move it, remove the claw from the incision, and then release the blockade. Therefore, the strength and material of the film need only be such that the person can press the blocking release member with an appropriate force to break it. Such as thin plastic. That is, the film has to be broken in order to lift the blockade, and the process of lifting will be clear at a glance.

In this way, you don't need to use any software, and you can easily identify whether there is unauthorized access at a glance. In addition, as long as the individual identification information such as a serial number is marked on the frame in advance, it is also easy to identify whether another frame has been installed after removal.

In addition, a blocking releasing mechanism provided in addition to the blocking mechanism includes a rod-shaped or plate-shaped member to enter the opening.

In addition, when the film is broken and inserted, and the claw portion is removed while pushing the guide portion downward, it is preferable to have a release recess provided to engage the lock release receiving portion. In this way, the unlocking recessed portion is hooked to the lockout release receiving unit, and the lockout mechanism can be pulled out most securely and easily.

It is described in this document that through the above structure, it is possible to completely No software is required, but it can prevent access to the USB plug-in interface itself and prevent information leakage, and it can be safely removed, and the history of improper access can be identified.

However, in the above-mentioned conventional USB plug-in interface blocking device (blocking mechanism and releasing mechanism), a film serving as an entrance of the blocking releasing member and a cavity toward the blocking releasing receiving portion are provided on the end surface of the frame, The blocking release member composed of a rod-shaped or plate-shaped member is broken into a film on the end surface to lead to the cavity, and it is pushed forward, and the blocking release member is pressed against the blocking release receiving section, and The guide portion is pushed down or pushed away to move it, and the claw portion is removed from the cutout (slit) in the flat portion of the outer frame, and the block is removed. Therefore, even if the lock release member itself is not used, as long as a bar and a plate similar to the lock release member are used, that is, they are passed through the cavity of the frame and against the lock release receiver, and pressed If the guidance unit can be operated to such an extent that there is a risk that the blockade can be lifted, a high degree of security cannot be obtained.

The present invention was developed by a researcher in order to solve such a conventional problem. The purpose thereof is to make it difficult to release the blocking after blocking and blocking the USB plug interface in such a USB plug interface blocking device, so as to achieve high reliability security. .

In order to achieve the above object, the USB plug-in blocking device of the present invention is a USB plug-in blocking device, which is inserted into a USB The plug connector is plugged and blocked to prevent access to the USB plug connector. The plug connector has a generally cylindrical cover case with openings at both ends, and a cylinder lock with an outer cylinder and an inner cylinder. It is composed of a plurality of lock pins and a plurality of driver pins. The outer tube has openings at both ends and is arranged and fixed in the aforementioned protective shell. The inner tube has a tip formed at the front end. It is a wedge-shaped blocking release part, and has a key hole on the rear end side, and is inserted into the outer tube so as to be movable in the axial direction of the outer tube. The plurality of blocking pins are attached to the outer tube and the foregoing. A plurality of pin holes are provided between the inner cylinders, and are movably arranged in the pin holes of the outer cylinder, and are pushed and pushed to the inner cylinder side by a spring member. The plurality of driver pins are movable. The cylinder lock is arranged in each pin hole of the inner cylinder and is elastically pressed against each blocking pin of the outer cylinder. The cylinder lock is in a normal state and locked, and a dedicated key is inserted into the key hole. To unlock it, while inside the aforementioned outer cylinder A form in which the inner cylinder can be moved toward the front end of the outer cylinder; a spring member is arranged in the cylinder lock, and in a normal state, the inner cylinder is pressed and pushed toward the rear end side of the outer cylinder, The blocking release part of the inner cylinder is pressed and held in the front opening of the outer cylinder; the insertion shell is formed into a substantially cylindrical shape that can be inserted into the USB plug interface, and has openings at both ends. When inserted into the USB plug interface The peripheral surface has a hole arranged opposite to a slit on one surface of the outer frame of the USB plug interface, and is connected to the protective case so that the blocking release portion of the inner tube can advance and retreat into the substantially cylindrical shape Opening at the front, and from the front An end opening protrudes to the outside of the protective case; and a blocking member composed of a leaf spring disposed along the surface having the hole in the substantially cylindrical shape of the insert case, and one end of which is supported by the insert case The front end side and the other end extend obliquely along the wedge shape of the tip of the blocking release portion of the inner tube in the direction opposite to the hole, and have a slit protruding from the hole in the middle portion to hold the USB socket. The USB plug interface blocking device inserts the aforementioned insertion case into the USB plug interface and blocks it, and the aforementioned locking claw protruding from the hole of the insertion case is fastened to the outer frame of the USB plug interface. This blocked state is blocked by a slit. The blocked state is maintained in the ordinary state by using the aforementioned cylinder lock in the locked state. When the aforementioned insertion shell is pulled out from the USB plug interface, the aforementioned key is inserted into the aforementioned circle. The cylinder lock is unlocked by the keyhole of the cylinder lock, and in the unlocked state, the inner cylinder is pushed to the side of the insertion shell against the elastic pushing force of the spring member, so that the seal is sealed. Releasing the insert housing forward portion, the block and the pawl member toward the insertion direction of separating from the USB interface of the slit to be displaced and the pressing, the block is released.

In this USB plug-in interface blocking device, the protective shell, the outer cylinder, and the inner cylinder are each formed into a flat corner tube shape, and preferably are formed into a flat corner shape as a whole.

Furthermore, in this USB plug interface blocking device, corresponding to two slits arranged side by side on one side of the outer frame of the USB plug interface, two holes are formed on one side of the insertion case, and the aforementioned blocking member is formed by a wide width. of And a narrow width plate, wherein the wide width plate has two lock claws, which are extended from the front end to the positions of the holes along the one side of the inside of the insertion case, and from the foregoing Each hole projects to the outside of the insertion case, and the narrow-width plate extends from between the locking claws to a predetermined position on the rear end side of the insertion case, and has a tip wedge shape that is securely connected to the blocking release portion at the end. The inclined surface, and the front end of the wide plate is preferably riveted and fixed to the front end of the one side surface of the insertion case.

In the USB plug interface blocking device of the present invention, the above configuration is adopted, and the plug housing is inserted into the USB plug interface, and the plug housing is used to block the USB plug interface, and is protruded from the hole of the plug housing. The locking claws are snapped into the slits of the outer frame of the USB plug interface to block this blocking state. The blocking state is set to the normal state and is maintained by the locked cylinder lock. Therefore, the USB plug is blocked and blocked. It is difficult to release the lock after the interface, and high security can be achieved. In addition, when the insertion case is pulled out from the USB plug interface, the cylinder lock is unlocked by inserting a dedicated key into the keyhole of the cylinder lock, and in this unlocked state, the inner cylinder is pushed forward by resisting the spring force of the spring member To the side of the insertion case, advance the lock release unit into the insertion case, and press the lock member on the lock claw toward the direction of being separated from the slot of the USB plug interface to displace the lock, so only the manager of the key The USB plug interface can be easily unblocked to achieve the unique effect of the invention.

1‧‧‧ protective shell

2‧‧‧ cylinder lock

3‧‧‧ Outer tube

4‧‧‧ inner tube

5‧‧‧ key

6‧‧‧Spring member (coil spring)

7‧‧‧ Insert the shell

8‧‧‧ Blocked component

10‧‧‧ opening

11‧‧‧ flange

31‧‧‧ opening

32‧‧‧ opening

33‧‧‧ pin hole

34‧‧‧Spring member (coil spring)

35‧‧‧ blockade pin

36‧‧‧Hollow

37‧‧‧Mounting holes

40‧‧‧ keyhole

41‧‧‧Unblocking Department

43‧‧‧ pin hole

45‧‧‧Driver Pin

46‧‧‧Hollow Department

47‧‧‧Receiving Department

51‧‧‧ Blade

52‧‧‧Head

53‧‧‧ convex buckle

71‧‧‧ opening

72‧‧‧ opening

73‧‧‧hole

74‧‧‧Fixed section

75‧‧‧Mounting holes

77‧‧‧pin

81‧‧‧ Wide angle plate

82‧‧‧ narrow width angle plate

90‧‧‧ Insertion port

91‧‧‧ frame

91s‧‧‧ the left side of the frame

92‧‧‧Slit

93‧‧‧Compression spring

94‧‧‧electrode support member

361‧‧‧ Front hollow

362‧‧‧ Hollow Hollow

363‧‧‧Backside Hollow Section

364‧‧‧fall

365‧‧‧fall

401‧‧‧ opening

402‧‧‧ opening

741‧‧‧Adjustment

811‧‧‧lock claw

821‧‧‧ inclined surface

L‧‧‧USB plug interface blocking device

P‧‧‧USB plug interface

Fig. 1 is a diagram showing the configuration of a USB plug-in interface blocking device according to an embodiment of the present invention, Fig. 1 (a) is a side sectional view, and Fig. 1 (b) is a rear sectional view.

The second series is an example of using the USB plug interface blocking device of FIG. 1 and shows a state in which the USB plug interface is blocked by the USB plug interface blocking device. FIG. 2 (a) is a plan sectional view and FIG. 2 (b) is a side sectional view.

FIG. 3 is a diagram showing a state of unlocking the USB plug interface blocking device of the USB plug interface as an example of use of the USB plug interface blocking device of FIG. 1, FIG. 3 (a) is a side sectional view, and FIG. Figure (b) is a plan sectional view, and Figure 3 (c) is a side sectional view.

Fig. 4 is a diagram showing the structure of a general USB plug interface, Fig. 4 (a) is a side view, and Fig. 4 (b) is a front view.

Next, the form for implementing this invention is demonstrated using drawing.

FIG. 4 shows a general USB plug interface, and FIG. 1 shows a USB plug interface blocking device.

First, the USB plug interface will be described.

As shown in FIG. 4, the USB plug interface P is composed of a metal frame 91, a plastic electrode support member 94, and a plurality of electrodes, and the metal frame is formed into a flat and generally rectangular tube shape. The plastic electrode supporting member 94 is disposed in the outer frame 91, and a plurality of electrodes (not shown) are disposed in the electrode supporting member 94. especially The outer frame 91 is made of spring steel or the like, and is formed into a flat, substantially rectangular tube shape as a whole so that the insertion opening 90 is wide in the longitudinal direction and narrowed in the width direction. Furthermore, on each side of the outer frame 91, a compression spring 93 for pressing a USB terminal (male) inserted into the USB plug interface P is projected inwardly. In the state shown in the figure, two large U-shaped slits 92 are formed side by side on two large surfaces, and two substantially triangular compression springs 93 are arranged in parallel. A substantially U-shaped slit 92 and a substantially triangular compression spring 93 are arranged. The above compression springs 93 are individually bent or bent toward the inside as a whole, and their tips are bent or bent toward the outside, and the USB terminals (male) inserted into this USB connector P are firmly pressed and held, and can be easily Insert or remove the USB terminal into or from this USB plug-in interface P.

The USB plug interface blocking device of the present invention will be described below.

As shown in FIG. 1, the USB plug interface blocking device L inserts the plug-in case 7 into the USB plug-in interface P and plugs it, and locks it by the locking claw 811 provided on the plug-in case 7. A slot 92 on one side of the outer frame 91 of the USB plug interface P is blocked to prevent connection to the USB plug interface P and prevent leakage of information. In particular, this USB plug interface blocking device L is configured by including a cover case 1, a cylinder lock 2, a spring member 6, an insertion case 7, and a blocking member 8.

In addition, in the USB plug interface blocking device L, the side corresponding to the outer frame 91 of the USB plug interface P is arranged side by side. 2 slits 92 of the surface 91s (hereinafter referred to as the left side 91s of the outer frame 91), two lock claws 811 are provided in the insertion case 7, and the two lock claws 811 are fastened to the two slits 92. Way to block it.

The protective case 1 is formed in a substantially cylindrical shape having openings 10 at both ends. In this embodiment, the protective case 1 is formed into a flat rectangular tube shape using polypropylene, and more specifically, it is formed into a flat rectangular tube shape with a longitudinally long flat shape as a whole, and has two ends. The opening 10 is wide in the longitudinal direction (longitudinal direction), and narrow in the width direction (horizontal direction), and is a long rectangular flat with a longitudinal length. In addition, in this embodiment, the opening 10 at the front end is formed with a flange 11 having a predetermined width over the entire circumference, and the opening area is slightly smaller than the opening 10 at the rear end.

The cylinder lock 2 includes: an outer cylinder 3 having openings 31, 32 at both ends and arranged and fixed in the protective shell 1; an inner cylinder 4 having a blocking release portion 41 formed at the front end with a wedge-shaped tip, and The end side has a key hole 40 and is inserted into the outer cylinder 3 so as to be movable in the axial direction of the outer cylinder 3; a plurality of blocking pins 35 are provided with a plurality of pin holes 33.43 between the outer cylinder 3 and the inner cylinder 4. And are movably arranged in each pin hole 33 of the outer cylinder 3 and pushed by the spring member 34 to the inner cylinder 4 side; and a plurality of driver pins 45 are movably arranged in the inner cylinder 4 Each pin hole 43 is elastically pressed against each blocking pin 35 of the outer cylinder 3, and the cylinder lock 2 is locked in a normal state by using a dedicated key 5 (see FIG. 3). It is inserted into the keyhole 40 to unlock, and it is a form which can move the inner cylinder 4 toward one end of the outer cylinder 3 in the outer cylinder 3.

The outer tube 3 is shaped by die-casting of zinc alloy It has a flat rectangular tube shape, and the rectangular tube shape is approximately the same length as the length in the axial direction of the inner side of the protective case 1 and is slightly smaller than the hollow cross section of the inner side of the protective case 1 and has openings at both ends. 31, 32. In this embodiment, it is formed into a flat, substantially quadrangular cylindrical shape that can be fitted into the protective case 1. In addition, the hollow portion 36 between the openings 31 and 32 at both ends of the outer cylinder 3 is composed of a rectangular front-end hollow portion 361, a rectangular middle hollow portion 362, and a rectangular rear-end hollow portion 363. The hollow portion 361 is short in the axial direction and has a large hollow cross-section and a long length. The quadrangular intermediate hollow portion 362 is connected to the front-end hollow portion 361, and the axial length is longer than the front-end hollow portion 361. The upper part of the tube is thinner than the front-end hollow portion 361, and the hollow cross-section is smaller and longer than the front-end hollow portion 361. The quadrangular rear-end hollow portion 363 is connected to the middle hollow portion 362 and has an axial length. It is slightly longer than the combined length of the front-end hollow portion 361 and the intermediate hollow portion 362, and the upper portion of the outer tube is thicker than the intermediate hollow portion 362, and the hollow cross section is smaller than the intermediate hollow portion 362, and is longer in length. In this way, from the difference in thickness of the upper portion of the cylinder outside the hollow portions 361, 362, and 363 on the front side, the middle, and the rear side, it can be seen that between the upper portion of the front side hollow portion 361 and the upper portion of the middle hollow portion 362 and the hollow Step portions 364 and 365 are formed between the space portion 362 and the rear end side intermediate portion 363, respectively. Furthermore, the rear-end-side hollow portion 363 is formed at a position eccentric with respect to the axis of the outer tube 3, and in this embodiment, it is formed at a position eccentric to the axis slightly below the axis. The pin holes 33 are formed in the upper part of the hollow part 363 on the end side of the thickest outer cylinder 3, and are formed in four places in the axial direction, and pass through the outer peripheral surface and the inner of the outer cylinder at right angles to the axial direction. Formed between the peripheral surfaces. Each of the pin holes 33 is provided with a bottom cylinder-shaped blocking pin 35, which is inserted between a coil spring serving as a spring member 34 and is movable toward the pin hole 43 of the inner tube 4. In addition, at one end of the left and right side surfaces of the outer cylinder 3, mounting holes 37 for inserting and fixing an insert case 7 described later are respectively passed through the upper and lower sides.

字形的直豎部所構成之用以作為線圈彈簧之接收部47。此內筒4係被插入到外筒3的中空部36內，且接收部47被配置在外筒3的中間中空部362之上部，並且接收部47的後部被扣合在中間中空部362與另一端側中空部363之間的段差部365，並以可從外筒3的前端出現且可朝外筒3的軸方向移動於外筒3內的方式嵌入前端之封鎖解除部41。 The inner tube 4 is formed into a flat rectangular tube shape by die-casting zinc alloy, and this rectangular tube shape is the same length as the hollow portion 36 of the outer tube 3, and is slightly smaller than the hollow cross section of the hollow portion 363 on the rear side. It has a flat rectangular tube shape with openings 401 and 402 at both ends, and in this embodiment, it is formed into a flat and substantially rectangular tube shape that can be inserted into the hollow portion 36 of the outer tube 3. In addition, the front end side of the inner tube 4 is roughly cut to a predetermined length, the tip (front end surface) of the upper half is formed into a wedge shape, and the blocking release portion 41 is provided at the front end of the inner tube 4. In this embodiment, the wedge shape of the blocking release portion 41 is inclined at a predetermined angle from the front end of one side surface (right side) of the blocking release portion 41 to the other side (left side) in a forward and backward direction ( It is formed in a right triangle shape as viewed from above (see Fig. 2 (a)). Then, the hollow portions between the openings 401 and 402 at the two ends of the inner cylinder 4 extend from the blocking release portion 41 at the front end to the rear end, and the lower half side is formed into a convex shape in cross section to constitute the key hole 40. The pin hole 43 corresponds to the pin hole 33 of the outer tube 3, and the upper portion of the inner tube 4 is formed in four places in the axial direction on the rear end side, and penetrates the outer peripheral surface and the inner periphery of the inner tube at a right angle to the axial direction. The surface (keyhole) is formed. Driver pins 45 of the same diameter and different lengths are respectively arranged in the above-mentioned pin holes 43 so as to be movable in the up-down direction, and are elastically pushed through the blocking pins 35 of the outer cylinder 3. In addition, the upper part of the inner tube 4 is connected to the rear part of the lock release part 41 and forms a cross section from the lock release part 41 side, that is, the front part is opened.

The upright portion formed in a zigzag shape serves as a receiving portion 47 of the coil spring. The inner tube 4 is inserted into the hollow portion 36 of the outer tube 3, and the receiving portion 47 is arranged above the middle hollow portion 362 of the outer tube 3, and the rear portion of the receiving portion 47 is fastened to the middle hollow portion 362 and another The stepped portion 365 between the one end side hollow portions 363 is inserted into the blocking release portion 41 at the front end so as to be able to emerge from the front end of the outer tube 3 and move in the outer tube 3 in the axial direction of the outer tube 3.

The key 5 is made of brass, and is composed of a blade 51 and a head 52. The concave-convex shape of the edge of the blade 51 should be commensurate with the key code of the cylinder lock 2. In this embodiment, the cylinder lock 2 is composed of 4 code pins and 4 segments with different lengths, so it can reach 4 to the 4th power, with a total of 256 different types of keys.

Here, the key 5 is attached to the concave-convex base of the blade 51 to form a convex engaging portion 53. The convex engaging portion 53 is used to insert the key 5 into the key hole 40 of the cylinder lock 2. At this time, the rear end surface of the inner cylinder 4 has a height which is only reliably connected to the upper edge portion of the key hole 40 (opening 402) and a length required to move the inner cylinder 4 within the outer cylinder 3 by a predetermined distance.

The cylinder lock 2 is constituted by a related structure, and an insertion case 7 to be described later is mounted on the front end, and is inserted into the protective case 1 in an integrated manner.

The spring member 6 is arranged in the cylinder lock 2. In a normal state, the inner cylinder 4 is pushed and pushed toward the rear end side of the outer cylinder 3, and the blocking release portion 41 of the inner cylinder 4 is pressed and held in the outer cylinder 3. Inside the front end opening 31. In this embodiment, a coil spring is used as the spring member 6, and the coil spring 6 is arranged in the receiving portion 47 of the upper part of the inner cylinder 4 of the cylinder lock 2 in the axial direction, and is pressed by an insert case 7 described later. While compressing, pushing the inner tube 4 toward the rear end side of the outer tube 3, and pressing the rear portion of the receiving portion 47 on the upper portion of the inner tube 4 to the step between the intermediate hollow portion 362 and the rear hollow portion 363. And press and hold the blocking release portion 41 of the inner tube 4 in the front end opening 31 of the outer tube 3.

The insertion case 7 is formed into a substantially cylindrical shape that can be inserted into the USB plug interface P, and has openings 71, 72 at both ends, and a hole 73 on the peripheral surface. The hole 73 is configured to be inserted into the USB plug when inserted into the USB plug interface P. The slot 92 on one side of the outer frame 91 of the interface is opposite to each other, and is connected to the front end opening 10 of the protective case 1 so that the blocking release portion 41 of the inner tube 4 can advance and retract inside the cylindrical shape of the insertion case 7. And protrudes from the front end opening 10 to the outside of the protective case 1. In this embodiment, the insertion case 7 is made of a steel plate, and is formed into a flat cylindrical shape with a flat cross section and a substantially rectangular shape, which is substantially the same shape as the outer frame of a connector of a commonly used USB device (male terminal). 71 forms a longitudinally long flat quadrangular shape, and the opening 72 at the rear end is formed in a quadrangular shape approximately the same as the cross-sectional shape of the blocking releasing portion 41 so that the blocking releasing portion 41 of the inner tube 4 can be inserted into the central portion in the vertical direction. In addition, when the upper and lower sides of the rear end opening 72 are covered by a plate, and when the insertion case 7 is connected to the front end opening 10 of the protective case 1, the spring member 6 is pressed by the upper plate. The right side of the insertion case 7 corresponding to the left side 91s of the outer frame 91 of the USB plug interface P is formed corresponding to each slit 92 (especially, the center portion of the slit 92) of the left side of the outer frame 91. 2 holes 73. Each hole 73 is formed in a rectangular shape. In addition, a fixing portion 74 for fixing a blocking member 8 described later is formed at the front end of the right side surface of the insertion case 7, and the rear side of the left and right side surfaces is formed to connect and fix the insertion case 7 to the protective case 1. Installation hole 75 in the front opening. In this embodiment, the fixing portion 74 is formed by a pair of U-shaped protruding pieces 741, and the front end edge portion of the right side surface of the insertion case 7 is symmetrically formed on the upper and lower sides with the center of the width direction as the center of symmetry. Both sides are folded back inwardly into a generally U shape. The mounting holes 75 are symmetrically formed on the upper and lower sides with the center of the width direction as the center of symmetry at the rear end sides of the left and right side surfaces of the insertion case 7.

The blocking member 8 has a locking claw 811 which is formed in the cylindrical shape of the insertion case 7 and is composed of a plate spring arranged along the right side of the hole 73. One end thereof is supported by the front end side of the insertion case 7. The other end is slantly extended along the wedge shape of the tip of the blocking release portion 41 of the inner cylinder 4 toward the left side surface opposite to the right side surface with the hole 73, and protrudes from the hole 73 at the middle portion to hold the USB plug. The slit 92 of the interface P. In this embodiment, the blocking member 8 is composed of a wide-angled angle plate 81 and a narrow-angled angle plate 82. The wide-angled angle plate 81 has two locking claws 811 made of stainless steel plate. And in the cylindrical shape of the insertion case 7, extending from the front end to the positions of the holes 73 along the right side surface, protruding from each hole 73 to the outside of the insertion case 7, and the narrow-angled angle plate 82 has an inclined surface 821, the The inclined surface 821 extends from between the locking claws 811 of the angle plate 81 to a predetermined position on the rear end side of the insertion case 7, and is securely connected to the tip wedge shape of the blocking release portion 41 at the end portion. The front end of the wide angle plate 81 of the blocking member 8 is inserted into the fixing portion 74 at the front end of the right side surface of the insertion case 7, that is, it is inserted into A pair of U-shaped adjusting pieces 741 are inside and riveted and fixed, and two locking claws 811 protrude from the holes 73 on the right side of the insertion case 7 to the outside, and the inclined surface 821 at the rear end is inserted from the right side after inserting the case 7 It extends obliquely toward the left side.

The rear end side of the insertion case 7 is arranged in the opening 31 of the front end of the outer cylinder 3 of the cylinder lock 2, and the pin 77 is passed through each of the mounting holes 37 at the front end of the outer cylinder 3 and the mounting holes 75 at the rear end of the insertion case 7. The ends of the pin 77 are riveted and connected to the front end of the outer tube 3. In this case 7, the tip of the blocking release portion 41 contacts the rear end inclined surface 821 of the blocking member 8 and is arranged so as to move forward and backward. The cylinder lock 2 that is combined with the insertion case 7 is embedded into the protective case 1 in a unified manner, and the insertion case 7 protrudes from the front end opening 10 of the protective case 1.

In this way, in the USB plug interface blocking device L, the plug case 7 is blocked by inserting it into the USB plug interface P, and the locking claws 811 protruding from the holes 73 of the plug case 7 are fastened to the USB This state is blocked by inserting each of the slits 92 of the outer frame 91 of the interface P. This blocked state is maintained by the cylinder lock 2 in the locked state in a normal state. Then, when the insertion case 7 is pulled out from the USB connector P, the cylinder lock 2 is unlocked by inserting a dedicated key 5 into the key hole 40 of the cylinder lock 2, and in this unlocked state, it resists the spring by The method of elastic pushing of the member 6 advances the inner cylinder 4 to the insertion case 7 side, advances the blocking release portion 41 in the insertion case 7, and advances the inclined surface 821 of the blocking member 8 toward each lock claw 811 from the USB plug interface P Each of the slits 92 is pressed in a direction in which the slits 92 are separated to cause displacement, thereby releasing the blockade.

Figures 2 and 3 show examples of using the USB plug-in blocking device L.

When the USB plug-in interface blocking device L is used to block the USB plug-in interface P, as shown in FIG. 2, the part of the protective case 1 of the USB plug-in interface blocking device L can be held and the plug-in case 7 can be inserted into the USB plug-in interface P. By inserting the insertion case 7 into the USB insertion port P, the USB insertion port P is blocked by the insertion case 7, and the two locking claws 811 protruding from the two holes 73 of the insertion case 7 are locked (blocked) in The outer frame 91 of the USB plug interface P has two slits 92 (the central portion of the slit 92), and the locked state of the lock claw 811 is maintained by the locked cylinder lock 2 in a normal state. That is, through the locking of the four blocking pins 35 of the outer cylinder 3 and the four pin holes 43 of the inner cylinder 4, the inner cylinder 4 is restricted from moving in the axial direction toward the insertion shell 7 in the outer cylinder 3, and the inner cylinder 4 cannot be used The lock release unit 41 presses the lock member 8 (the inclined surface 821), so that the locking state of each locking claw 811 toward each slit 92 is maintained.

Then, when the USB plug interface P is unblocked, as shown in FIG. 3 (a), the cylinder is inserted into the key hole 40 of the cylinder lock 2 of the USB plug interface blocking device L by inserting a dedicated key 5 into the cylinder. Lock 2 is unlocked. That is, by inserting a dedicated key 5 and cooperating with the concave-convex shape of the blade 51 of the key 5, each driver pin 45 in each pin hole 43 of the inner cylinder 4 is pushed upward, and is arranged on each pin of the outer cylinder 3 and the inner cylinder 4. The boundary alignment surfaces of the blocking pin 35 and the driver pin 45 in the holes 33 and 43 coincide on the common line of the outer cylinder 3 and the inner cylinder 4, so that the inner cylinder 4 can move toward the insertion shell 7 in the outer cylinder 3. Next, as shown in FIG. 3 (c), the upper edge of the keyhole 40 of the inner cylinder 4 is pressed by the pressing operation of the key 5 and the convex-shaped engaging portion 53 of the key 5 is pressed, and When the inner tube 4 is pushed toward the insertion case 7 in the outer tube 3, the blocking release portion 41 at the front end of the inner tube 4 advances in the insertion case 7 and enters the blocking member while pushing the inclined surface 821 of the blocking member 8 upward. Between 8 and the right side of the insertion case 7, the blocking member 8 as a whole is tilted toward the left side of the insertion case 7. In this way, each of the locking claws 811 is disengaged from each of the slits 92 of the USB plug interface P, and is inserted into each of the insertion shells 7 from each of the holes 73 on the right side of the insertion case 7, and each locking claw 811 is fastened to the slit 92 The status will be lifted. In the unlocking state of the locking claw 811, as long as the part of the protective case 1 is held and the USB plug interface blocking device L is pulled out from the USB plug interface P, the USB plug interface P can be unlocked.

As described above, according to the USB plug interface blocking device L, the plug housing 7 is inserted into the USB plug interface P and blocked, and in this blocked state, the locks protrude from the holes 73 of the plug housing 7 The claws 811 are fastened to the slits 92 of the outer frame 91 of the USB plug-in interface P to block them. The blocking state is set to the normal state and is maintained by the cylinder lock 2 in the locked state. Therefore, the USB is blocked and blocked. It is difficult to release the lock after inserting the interface P, and high reliability security can be achieved. Then, when the insertion case 7 is pulled out from the USB socket P, the cylinder lock 2 is unlocked by inserting a dedicated key 5 into the key hole 40 of the cylinder lock 2. In this unlocked state, by using a resistance spring The elastic pushing force of the member 6 pushes the inner cylinder 4 to the insertion case 7 side, advances the lock release portion 41 in the insertion case 7, and separates each of the locking claws 811 from the slits 92 of the USB insertion port P toward The blocking member 8 is pressed to move the block to release the block, so only the administrator of the key 5 can easily unblock the USB plug-in interface P.

Furthermore, in this USB plug-in interface blocking device L, instead of inserting the key 5 into the key hole 40 of the inner cylinder 4 to unlock the cylinder lock 2, and using the key 5 to rotate the inner cylinder 4 in the outer cylinder 3, Instead, it is set to advance in the direction of the axis, which forms the protective case 1, the outer tube 3, and the inner tube 4 into flat rectangular tube shapes and the entire device into a flat angular shape, so the entire The thickness of the device is thin. Therefore, two or more USB sockets P can be blocked when they are arranged side by side on the back and side of the main body of a personal computer, and two USB sockets P can be blocked by two USB sockets blocking device L, and also One USB plug interface blocking device L can be used to block only one USB plug interface P without interfering with the use of the other USB plug interface P.

In addition, in this USB plug-in interface blocking device L, the cylinder lock 2 is composed of 4 password pins and 4 step differences of different lengths, so it can achieve 4 to the 4th power and a total of 256 different keys. More reliable security.

Furthermore, in this USB plug interface blocking device L, although different numbers of keys are set to 256 types, each increase in the number of permutations of a pin can be increased by a factor of four. By increasing the number of permutations of the pins, it can be achieved. More reliable security.

Moreover, in this USB plug-in interface blocking device L, although two slits 92 are arranged in parallel on one side of the outer frame 91 of the USB plug-in interface P, two locking claws 811 are provided in the insertion case 7 so that 2 The locking claws 811 are fastened to the two slits 92 for blocking. However, the locking claws 811 can also be provided in the insertion case corresponding to one slit arranged on one side of the outer frame of the USB socket P. Lock claws, and lock one lock claw with one slit.

1‧‧‧ protective shell

2‧‧‧ cylinder lock

3‧‧‧ Outer tube

4‧‧‧ inner tube

7‧‧‧ Insert the shell

8‧‧‧ Blocked component

35‧‧‧ blockade pin

41‧‧‧Unblocking Department

43‧‧‧ pin hole

73‧‧‧hole

91‧‧‧ frame

92‧‧‧Slit

811‧‧‧lock claw

821‧‧‧ inclined surface

L‧‧‧USB plug interface blocking device

P‧‧‧USB plug interface

Claims (3)

A USB plug interface blocking device is inserted into a USB plug interface and plugged and blocked to prevent access to the USB plug interface. The device is provided with a substantially cylindrical protective shell with openings at both ends and a cylinder lock. It has an outer cylinder and an inner cylinder with a plurality of blocking pins and a plurality of driver pins. The outer cylinder has openings at both ends and is arranged and fixed in the aforementioned protective shell. The inner cylinder has a tip formed at the front end. It is a wedge-shaped blocking release part, and has a key hole on the rear end side, and is inserted into the outer tube so as to be movable in the axial direction of the outer tube. The plurality of blocking pins are attached to the outer tube and the aforementioned A plurality of pin holes are provided between the inner cylinders, and are movably arranged in the pin holes of the outer cylinder, and are pushed and pushed to the inner cylinder side by a spring member. The plurality of driver pins are movable. The cylinder lock is arranged in each pin hole of the inner cylinder and is elastically pressed against each blocking pin of the outer cylinder. The cylinder lock is in a normal state and locked, and a dedicated key is inserted into the key hole. To unlock it, and A form in which the inner cylinder can be moved toward the front end of the outer cylinder; the spring member is arranged in the cylinder lock, and in a normal state, the inner cylinder is directed toward the rear end side of the outer cylinder The push-pull pushes and holds the blocking release part of the inner tube in the front opening of the outer tube; the insertion shell is formed into a substantially cylindrical shape that can be inserted into the USB plug interface, and has openings at both ends for insertion into the USB plug interface The surface has a hole arranged opposite to the slit on one surface of the outer frame of the USB plug interface, and is connected to the front end of the protective case so that the blocking release portion of the inner tube can advance and retreat into the substantially cylindrical shape. And a blocking member composed of a leaf spring disposed along the surface having the hole in the substantially cylindrical shape of the insertion case, and one end of the blocking member It is supported on the front end side of the insertion case, the other end of which is opposite to the hole, and extends obliquely along the wedge shape of the tip of the blocking release portion of the inner tube. The locking claw of the slot of the plug interface; the USB plug interface blocking device inserts the aforementioned insertion case into the USB plug interface and blocks it, and the aforementioned locking claw protruding from the hole of the insertion case is fastened to the USB plug This blocking state is blocked by the slot of the outer frame of the interface. The blocked state is maintained by the cylinder lock in the locked state in the ordinary state, and the aforementioned insertion is pulled out from the USB plug interface. At this time, the cylinder lock is unlocked by inserting the key into the key hole of the cylinder lock, and in the unlocked state, the inner cylinder is pushed to the side of the insertion shell against the spring thrust of the spring member. , So that the lock release unit advances in the insertion case, and presses the lock member in a direction in which the lock claw is separated from the slit of the USB plug interface and displaces the lock to release the lock. The USB plug interface blocking device described in item 1 of the scope of patent application, Among them, the protective shell, the outer tube, and the inner tube are each formed into a flat corner tube shape, and the whole is formed into a flat corner shape. The USB plug interface blocking device according to item 1 or 2 of the scope of patent application, wherein corresponding to two slits arranged side by side on one side of the outer frame of the USB plug interface, and two are formed on one side of the insertion shell. Hole, and the blocking member is composed of a wide plate and a narrow plate, wherein the wide plate has two locking claws, which are attached to the inside of the insertion shell along the one side from the front end It extends to the positions of the aforementioned holes and protrudes from the aforementioned holes to the outside of the insertion case, and the narrow-width plate extends from between the locking claws to a predetermined position on the rear end side of the insertion case, and has an end portion It is securely connected to the wedge-shaped inclined surface of the tip of the lock release portion, and the front end of the wide plate is riveted and fixed to the front end of the one side of the insertion case.