Mini USB-Key

Abstract

The utility model discloses a mini USB-Key, which relates to the technical field of information security, and specifically comprises an equipment main body which comprises a security chip, a connecting plug and a PCB (Printed Circuit Board), and the security chip and the connecting plug are both fixed and electrically connected with the PCB; the shell is internally and fixedly provided with a gel filling piece and is used for wrapping and fixing a combined body of the PCB and the security chip, and the shell is provided with an opening at a single end and is used for enabling the connecting plug to extend to the outside of the shell; according to the mini USB-Key, the gel filling piece is filled between the shell and the equipment main body, and the equipment main body and the shell are fixed, so that the occupied space of a fixing mechanism between the equipment main body and the shell is saved, the volume of the USB-Key can be effectively reduced, and the problems that the USB-Key is easy to damage and is not attractive in the use process are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to information security technical field, more specifically, relate to a mini USB-Key. BACKGROUND

[0002] At present, when carrying out mobile office on the mobile terminal equipment with information security requirement, usually equip USB-Key to realize identity authentication, authority management, secret key dispersion etc. USB-Key is the important tool of guaranteeing equipment information security.

[0003] About USB-Key product, at present have two kinds:

[0004] (1) USB-A interface, product thickness is equal to greater than 6mm, is inserted in mobile terminal equipment external use.

[0005] (2) TYPE-C interface, product thickness is equal to greater than 5mm, is inserted in mobile terminal equipment external use.

[0006] USB-Key product mainly comprises safety chip, plug and PCB board and is composed of equipment main part, and increases the shell outside equipment main part and protects, and usually designs the fixing mechanism between shell and PCB board, is used to make equipment main part and shell relative fixation, and then to USB-Key when being collided or falling, its core equipment main part can be protected by shell and be not damaged, but the fixing mechanism between equipment main part and shell needs to set up the support in the shell and set up the installation position of support on the PCB board, therefore, need to increase the area of PCB board and increase the volume of shell, and then make USB-Key when using, need to be inserted in the external of mobile terminal, and form the cantilever structure with mobile terminal, and the part in cantilever is longer, when being collided, has greater arm, is easy to cause the damage of USB-Key, and there is the possibility of damaging mobile equipment interface female seat, simultaneously, the USB-Key of protruding plug affects the overall appearance because of the larger volume.

[0007] Summarized above, how to solve the difficult problem of easy damage and unattractive caused by the large volume of USB-Key, is the urgent problem of the present technical personnel in the field. Utility model content

[0008] Therefore, the utility model aims at providing a mini USB-Key, by filling the gel filler between the shell and the equipment main body, fixing the equipment main body and the shell, thereby saving the occupied space of the fixing mechanism between the equipment main body and the shell, and effectively reducing the volume of the USB-Key, which helps to reduce the problems of easy damage and unattractive during use.

[0009] In order to achieve the above object, the utility model provides the following technical scheme:

[0010] A mini USB-Key, comprising:

[0011] The device main body comprises a security chip, a plug and a PCB board, and the security chip and the plug are fixed and electrically connected with the PCB board;

[0012] The shell is internally fixed with a gel filler, which is used for wrapping and fixing the combination of the PCB board and the security chip, and the shell is single-end open, so that the plug extends to the outside of the shell.

[0013] Preferably, the shell is a stainless steel shell, and an end cover is fixed at the opening position, and a through hole is arranged in the middle of the end cover for the plug to pass through.

[0014] Preferably, the inner wall of the through hole and the outer wall of the plug are in transition fit or clearance fit, and the center line of the through hole and the center line of the shell overlap.

[0015] Preferably, the end cover is a plastic cover, and is adhesively fixed with the inner wall of the shell or the gel filler.

[0016] Preferably, the surface of the PCB board or the combination of the PCB board and the security chip is coated with insulating paint to prevent short circuit of components on the surface of the PCB board.

[0017] Preferably, the plug is a TYPE-C connector, and the plug is fixedly installed with the PCB board in a horizontal installation mode.

[0018] Preferably, the shell is a stainless steel sheet shell.

[0019] Preferably, the inner wall of the shell is coated with insulating paint.

[0020] Compared with the prior art, the mini USB-Key provided by the utility model has at least the following beneficial effects:

[0021] The utility model fills the gel filler between the shell and the device main body, and fixes the shell and the device main body by means of the gel filler, instead of the traditional fixing mechanism in the USB-Key, which helps to reduce the area of the PCB board and the volume of the shell, and further reduces the overall volume of the USB-Key, that is, reduces the probability of damage during use of the USB-Key and improves the aesthetic appearance. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0023] Figure 1 Structure diagram of the mini USB-Key provided by the present application;

[0024] Figure 2 Parts explosion diagram of the mini USB-Key provided by the present application;

[0025] Figure 3 Assembly diagram of the mini USB-Key and the mobile terminal provided by the present application.

[0026] In the drawings:

[0027] 1, end cover; 2, device main body; 21, security chip; 22, plug; 23, PCB; 3, gel filler; 4, shell. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The core of the present application is to provide a mini USB-Key. The device main body and the shell are fixed by filling a gel filler between the shell and the device main body, thereby saving the occupied space of the fixing mechanism between the device main body and the shell, and effectively reducing the volume of the USB-Key, which helps to reduce the problems of easy damage and unattractive appearance of the USB-Key during use.

[0030] Please refer to Figure 1 and Figure 2 A mini USB-Key, comprising:

[0031] The device main body 2 comprises a security chip 21, a plug 22 and a PCB 23. The security chip 21 and the plug 22 are fixed and electrically connected with the PCB 23.

[0032] The shell 4 is internally fixedly provided with the gel filling 3 for wrapping and fixing the combination of the PCB board 23 and the security chip 21, and the shell 4 is single-end opened for extending the plug 22 to the outside of the shell 4;

[0033] As shown in Figure 2 The security chip 21, the PCB board 23 and the plug 22 constitute the device main body 2, and the combination of the security chip 21 and the PCB board 23 is wrapped by the shell 4, and after the combination of the security chip 21 and the PCB board 23 is placed in the shell 4, the gel is injected, and after the gel is solidified, the gel filling 3 is formed, the solidified gel filling 3 can bond the combination of the security chip 21 and the PCB board 23 and the shell 4 into one body, so that no additional fixing mechanism needs to be additionally arranged between the device main body 2 and the shell 4, that is, no mounting position of the fixing mechanism needs to be reserved on the PCB board 23, which helps to reduce the area of the PCB board 23 and the volume of the shell 4, that is, the overall volume of the USB-Key is reduced, and the size of the shell 4 and the PCB board 23 of the USB-Key designed by the scheme is:

[0034] The shell 4 has a thickness of 3.5 mm, a width of 16 mm and a length of 13.2 mm, and the inner cavity has a height of 3.0 mm and a curved corner R of 1.75 mm;

[0035] The PCB board 23 has a thickness of 2.1 mm, a width of 12.8 mm and a length of 9.5 mm;

[0036] Compared with the traditional USB-Key, the volume of the USB-Key of the application is effectively controlled;

[0037] As shown in Figure 3 When the USB-Key of the application is used, the cantilever length is shorter than that of the traditional USB-Key, the damage probability is reduced, and the gel filling 3 filled between the combination of the security chip 21 and the PCB board 23 and the shell 4 has the effect of buffering and absorbing energy, effectively reducing the probability of damage when the USB-Key falls.

[0038] Meanwhile, since the volume of the USB-Key of the application is small, a groove can be arranged at the plug position of the mobile terminal, so that after the USB-Key is inserted, the USB-Key can be embedded in the groove, that is, the embedded installation of the USB-Key is realized, and the damage probability of the USB-Key caused by collision is further reduced.

[0039] In some embodiments, the shell 4 is a stainless steel shell, and the end cap 1 is fixedly arranged at the opening position, and the middle of the end cap 1 is provided with a through hole for the plug 22 to pass through;

[0040] As shown in Figure 2As shown, by setting the end cover 1 at the opening of the shell 4, it can help to prevent external dust from entering the inside of the shell 4, and in the process of glue injection, the use of the end cover 1 for sealing can help to prevent the overflow of the un-solidified gel inside, and after the addition of the end cover 1, the overall flatness of the USB-Key can be improved, and the user experience can be improved.

[0041] In some embodiments, the inner wall of the through hole is in a transition fit or clearance fit with the outer wall of the plug 22, and the center line of the through hole overlaps the center line of the shell 4;

[0042] By limiting the assembly mode of the through hole and the plug 22, the plug 22 is relatively fixed with the end cover 1, so that the USB-Key has a relatively stable relative positional relationship during use, effectively preventing the end cover 1 from falling off;

[0043] And by limiting the assembly mode of the through hole in the end cover 1 and the plug 22, the relative positional relationship between the device body 2 and the end cover 1 is determined, and when assembled with the shell 4, only the positional relationship between the end cover 1 and the shell 4 needs to be ensured to be accurate, so that the relative positional relationship between the device body 2 and the shell 4 can be ensured to be accurate;

[0044] As in this application, the center line of the through hole overlaps the center line of the shell 4, so that after the device body 2 is installed with the shell 4, the combination of the PCB board 23 and the security chip 21 is in the middle position of the inner cavity of the shell 4, and there is a certain gap between the combination of the PCB board 23 and the security chip 21 and the inner wall of the shell 4, so that the combination of the PCB board 23 and the security chip 21 will not be in direct contact with the inner wall of the shell 4, thereby avoiding the short circuit of the elements on the PCB board 23.

[0045] In some embodiments, the end cover 1 is a plastic cover, and is adhesively fixed with the inner wall of the shell 4 or the gel filler 3;

[0046] When producing the USB-Key of the present application, the end cover 1 is installed before the gel inside the shell 4 is completely solidified, so that the end cover 1 can be bonded with the shell 4 by means of the adhesive property of the gel, thereby eliminating the need to design a fixing mechanism for the end cover 1, and solving the problem of increased volume occupation caused by the fixing of the end cover 1;

[0047] Alternatively, during production, the device body 2 and the end cover 1 are first assembled, and a certain amount of gel is injected into the shell 4, and then the combination of the device body 2 and the end cover 1 is installed into the shell 4 before the gel solidifies, at which time the gel is extruded and overflowed to wrap the combination of the PCB board 23 and the security chip 21, and then the inner wall of the end cover 1 is bonded, and after the gel solidifies, the gel filler 3 is formed, so that the end cover 1, the device body 2 and the shell 4 form an integrated structure.

[0048] In some embodiments, the surface of the PCB 23 or the combination of the PCB 23 and the security chip 21 is coated with insulating paint to prevent short circuit of the components on the surface of the PCB 23.

[0049] In the production process, the outer surface of the PCB 23 or the combination of the PCB 23 and the security chip 21 is coated with insulating paint, and the surface of the PCB 23 is insulated to avoid short circuit caused by contact between the remaining components on the PCB 23 and the shell 4.

[0050] In some embodiments, the plug 22 is a TYPE-C plug, and the plug 22 is fixedly installed with the PCB 23 in a horizontal installation manner.

[0051] The TYPE-C plug has a smaller size and a wider adaptability compared with the traditional USB-A plug, and can be used with most mobile terminals on the market. The TYPE-C plug is installed in a horizontal manner, which is simpler and occupies less space compared with vertical installation, and helps to further reduce the overall size of the USB-Key.

[0052] In some embodiments, the shell 4 is a stainless steel sheet shell.

[0053] The stainless steel sheet shell is punched, which can reduce the thickness of the shell 4 and further reduce the overall size while ensuring the protection performance of the device main body 2, thanks to the high hardness and corrosion resistance of stainless steel.

[0054] At the same time, the stainless steel material has a certain electromagnetic shielding effect, which can improve the electromagnetic interference capability of the USB-Key.

[0055] Similarly, other metal materials with high hardness and easy machining can also be used as the material of the shell 4.

[0056] In some embodiments, the inner wall of the shell 4 is coated with insulating paint.

[0057] The shell 4 made of metal material has a certain probability of contacting the PCB 23 and causing short circuit of the components on the PCB 23 when the external holding force is large and causes the shell 4 to deform. Therefore, coating the inner wall of the shell 4 with insulating paint can effectively reduce the probability of short circuit of the components on the PCB 23.

[0058] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0059] The above has carried out the detailed introduction to the mini USB-Key provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used for helping to understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A mini-USB-Key, characterized in that, Include: The device body (2) includes a security chip (21), a plug (22) and a PCB board (23), the security chip (21) and the plug (22) are fixed and electrically connected with the PCB board (23); The shell (4) is internally fixedly provided with a gel filler (3), which is used for wrapping and fixing the combination of the PCB board (23) and the security chip (21), and the shell (4) is single-end opening, which is used for extending the plug (22) to the outside of the shell (4).

2. The mini-USB-Key according to claim 1, characterized in that The shell (4) is a stainless steel shell, and the opening position is fixedly provided with an end cover (1), the middle of the end cover (1) is provided with a through hole for the plug (22) to penetrate through.

3. The mini-USB-Key according to claim 2, characterized in that The inner wall of the through hole and the outer wall of the plug (22) are transition fit or clearance fit, and the center line of the through hole and the center line of the shell (4) overlap.

4. The mini-USB-Key of claim 2, wherein, The end cover (1) is a plastic cover, and is adhesively fixed with the inner wall of the shell (4) or the gel filler (3).

5. The mini-USB-Key of claim 1, wherein, The surface of the PCB board (23) or the combination of the PCB board (23) and the security chip (21) is coated with insulating paint to prevent short circuit of the components on the surface of the PCB board (23).

6. The mini-USB-Key of claim 1, wherein, The plug (22) is a TYPE-C connector, and the plug (22) is fixedly installed with the PCB board (23) in a horizontal installation mode.

7. The mini-USB-Key according to any of claims 1 to 6, characterized in that The shell (4) is a stainless steel sheet shell.

8. The mini-USB-Key according to claim 7, characterized in that The inner wall of the shell (4) is coated with insulating paint.

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