CN210579466U - Printed circuit board and multifunctional terminal - Google Patents

Abstract

The utility model belongs to the technical field of the preparation of multi-functional terminal, especially, relate to a printed circuit board. The utility model discloses a printed circuit board is applied to multi-functional terminal, through offering accuse deep groove on protection circuit board, and this accuse deep groove's opening direction is directional mainboard direction, when protection circuit board welds on the mainboard, mainboard closing cap accuse deep groove makes accuse deep groove form confined protection chamber, locates the protection intracavity with the core device for the core device is protected between mainboard and protection circuit board. Therefore, the core device can be protected in the protection cavity through the single protection circuit board, and the whole volume of the printed circuit board can be effectively controlled. In addition, because only a single protection circuit board is arranged on the outer side of the core device, the stability of welding the side edge of the protection circuit board is superior to the stability of welding the side edge of the vertical printed circuit board only, and the protection circuit board is prevented from falling off from the main board in transportation, storage and daily use.

Description

Printed circuit board and multifunctional terminal

Technical Field

The utility model belongs to the technical field of the multi-functional terminal preparation, especially, relate to a printed circuit board and multi-functional terminal.

Background

Most Of the existing multifunctional terminal (Point Of Sale) core safety protection is based on a plurality Of printed circuit boards, and a closed box is formed by assembling or welding to provide protection for core devices Of the multifunctional terminal. The core device is located on the mainboard, the periphery of the safety related device is respectively provided with an IC card seat and three vertical printed circuit boards welded on the mainboard, and the other cover plate provided with a serpentine line is connected with the mainboard through a zebra stripe and covers the upper part of the mainboard. The mainboard, the IC card seat, the vertical printed circuit board and the cover plate jointly form a closed safe area to prevent the core device from being attacked. However, the vertical printed circuit board is easily separated from the main board by welding the side welding points, and the size formed between the vertical printed circuit board and the main board is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a printed circuit board aims at solving the great technical problem of size that easily drops and form between the vertical printed circuit board of the multi-functional terminal among the prior art and the mainboard.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a printed circuit board, is applied to multi-functional terminal, includes the mainboard, and locates core device and protection circuit board on the mainboard, protection circuit board has seted up the opening orientation the accuse deep trouth of mainboard direction, just protection circuit board with the mainboard encloses to close and forms the protection chamber, the core device is all located the protection intracavity.

Further, the protection circuit board is including being located and keeping away from the first inner core board that the mainboard direction set up, the surface of first inner core board is equipped with first serpentine, just seted up on the first inner core board and run through first inner core board and with first via hole portion and the second via hole portion that first serpentine electricity is connected respectively, be equipped with safe treater on the mainboard, safe treater with first via hole portion electricity is connected, the second via hole portion with the mainboard electricity is connected.

Further, the protection circuit board further comprises a second inner core board overlapped with the first inner core board, the second inner core board is arranged at the bottom of the depth control groove, a second serpentine line is arranged in the projection range of the depth control groove, a third via part and a fourth via part which are arranged in the projection range of the depth control groove and are respectively and electrically connected with the second serpentine line are arranged on the second inner core board, the safety processor is electrically connected with the third via part, and the fourth via part is electrically connected with the main board.

Further, the first serpentine is the same length as the second serpentine.

Further, the protection circuit board further includes a third core board overlapped with and disposed adjacent to the first core board, the third core board and the first core board are disposed on opposite sides of the second core board, the third core board and the second core board form the depth control groove, a plurality of fifth via portions penetrating through the second core board and the third core board simultaneously are disposed on the third core board, the safety processor further includes a first pin electrically connected to the safety processor, and the first pin penetrates through the plurality of fifth via portions and is electrically connected to the main board.

Furthermore, the fifth through hole parts are uniformly arranged in multiple rows, and two adjacent rows of the fifth through hole parts are arranged in a staggered manner.

Further, the depth control groove comprises a first depth control part located in the middle of the protection circuit board and a second depth control part communicated with the first depth control part, the core device is arranged at a position corresponding to the first depth control part, and the safety processor is arranged at a position corresponding to the second depth control part.

Further, the inner wall of the first depth control part is of an arc-shaped structure.

Further, the protection circuit board is fixed on the main board through a surface assembly technology.

The utility model has the advantages that: the utility model discloses a printed circuit board is applied to multi-functional terminal, through offering accuse deep groove on protection circuit board, and this accuse deep groove's opening direction is directional mainboard direction, when protection circuit board welds on the mainboard, mainboard closing cap accuse deep groove makes accuse deep groove form confined protection chamber, locates the protection intracavity with the core device for the core device is protected between mainboard and protection circuit board. Therefore, the core device can be protected in the protection cavity through the single protection circuit board, and the whole volume of the printed circuit board can be effectively controlled. In addition, because only a single protection circuit board is arranged on the outer side of the core device, the stability of welding the side edge of the protection circuit board is superior to the stability of welding the side edge of the vertical printed circuit board only, and the protection circuit board is prevented from falling off from the main board in transportation, storage and daily use.

The utility model also provides a multifunctional terminal, including foretell printed circuit board.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a printed circuit board according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a printed circuit board according to an embodiment of the present invention;

fig. 3 is a first schematic structural diagram of a protection circuit board according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a protection circuit board according to an embodiment of the present invention;

3 fig. 3 5 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 4 3. 3

Wherein, in the figures, the respective reference numerals:

10, a main board; 11-core devices; 12-a secure processor;

20-protective circuit board; 21-depth control groove; 22 — a first core plate;

221 — a first serpentine; 222 — a first via portion; 223 — a second via portion;

23 — a second core plate; 24-a third core plate; 241-fifth via portion;

214 — first depth control section; 215 — second depth control section; 25-fourth core plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be used to illustrate the invention, but should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-5, the embodiment of the utility model provides a printed circuit board is applied to multi-functional terminal, including mainboard 10 to and locate core device 11 and protection circuit board 20 on the mainboard 10, protection circuit board 20 sets up the control deep trouth 21 of opening towards mainboard 10 direction, and protection circuit board 20 encloses with mainboard 10 and closes formation protection chamber, and core device 11 all locates in the protection chamber (not shown in the figure).

The utility model discloses printed circuit board is applied to multi-functional terminal, through offering accuse deep trouth 21 on protection circuit board 20, and this accuse deep trouth 21's opening direction is directional mainboard 10 direction, when protection circuit board 20 welds on mainboard 10, mainboard 10 closing cap accuse deep trouth 21 makes accuse deep trouth 21 form confined protection chamber, locates the protection intracavity with core device 11 for core device 11 is protected between mainboard 10 and protection circuit board 20. In this way, the core device 11 can be protected in the protection cavity by the single protection circuit board 20, so that the entire volume of the printed circuit board can be effectively controlled. In addition, since only a single protection circuit board 20 is provided outside the core device 11, the stability of soldering the side of the protection circuit board 20 is superior to the stability of soldering only the side of the vertical printed circuit board, preventing the protection circuit board 20 from falling off the main board 10 in transportation, storage, and daily use.

Further, as shown in fig. 3, in the embodiment, the protection circuit board 20 includes a first core board 22 disposed in a direction away from the main board 10, and the outer surface of the first core board 22 is provided with a first serpentine line 221, the first core board 22 is provided with a first via portion 222 and a second via portion 223 penetrating through the first core board 22 and electrically connected to the first serpentine line 221, respectively, the main board 10 is further provided with a safety processor 12, the safety processor 12 can receive a signal fed back by the first core board 22 and can destroy data in the core device 11 and self-destruct, the safety processor 12 is electrically connected to the first via portion 222, and the second via portion 223 is electrically connected to the main board 10. By arranging the first serpentine 221 on the first core board 22, and by electrically connecting two ends of the first serpentine 221 with the first via portion 222 and the second via portion 223 respectively, the first via portion 222 is electrically connected with the security processor 12 through the second pin, and the second via portion 223 is electrically connected with the main board 10 through the third pin, in this way, if the first core board 22 is damaged under external attack, the security processor 12 can receive the information fed back, that is, the path where the first core board 22 is located is in a short-circuit state, the security processor 12 makes corresponding feedback, destroys the data in the core device 11 and performs self-destruction, thereby preventing the data from being stolen by violent destruction.

Further, as shown in fig. 5, in the embodiment, the protection circuit board 20 further includes a second core board 23 overlapping the first core board 22, the second core board 23 is disposed at the bottom of the depth control groove 21, the second core board 23 is disposed with a second serpentine (not shown in the figure) within the projection range of the depth control groove 21, the second core board 23 is disposed with a third via portion (not shown in the figure) and a fourth via portion (not shown in the figure) within the projection range of the depth control groove 21 and electrically connected to the second serpentine, the safety processor 12 is electrically connected to the third via portion, and the fourth via portion is electrically connected to the main board 10. And then through setting up the second inner core board 23, and the depth control trough 21 of the second inner core board 23 is equipped with the second serpentine in the projection range, can form the route between mainboard 10 and the safety processor 12 with the second serpentine, similar to first inner core board 22, if the first inner core board 22 does not cause the safety processor 12 to make corresponding feedback because of the fault short circuit, can play the effect of secondary insurance through the second inner core board 23, the safety of the data in the effective guarantee core device 11.

Further, in the present embodiment, the lengths of the first serpentine 221 and the second serpentine are the same. The lengths of the first serpentine line 221 and the second serpentine line are set to be the same, so that the same random signal sent from the security processor 12 at the same moment can be received by the motherboard 10 at the same time, and if the receiving time is inconsistent, or the signals received at the same time are inconsistent, or the received signals are inconsistent with the signals sent by the security processor 12, the security processor 12 can determine that external force is attacking the protection circuit board 20, and simultaneously make corresponding feedback, so as to ensure the security of the data in the core device 11.

Specifically, in the present embodiment, a plurality of inner core boards may be further disposed between the first inner core board 22 and the second inner core board 23, and a serpentine line may be further disposed in one or more layers of the plurality of inner core boards to further protect the core device 11.

Further, as shown in fig. 5, in the embodiment, the protection circuit board 20 further includes a third core board 24 overlapping and adjacently disposed with the first core board 22, the third core board 24 and the first core board 22 are disposed on two opposite sides of the second core board 23, the third core board 24 and the second core board 23 form a depth control slot 21, a plurality of fifth via portions 241 simultaneously penetrating through the second core board 23 and the third core board 24 are disposed on the third core board 24, the safety processor 12 further includes a first pin (not shown) electrically connected with the safety processor 12, and the first pin passes through the plurality of fifth via portions 241 and is electrically connected with the main board 10. The third core board 24 is arranged on the side wall of the depth control groove 21, the fifth through hole portions 241 are formed in the third core board 24 and the second core board 23, the first pin penetrates through the fifth through hole portions 241, so that the first pin is formed on a protective layer wrapping the core device 11 on the side face, when the side portion of the protective circuit board 20 is attacked, the structure of the first pin is changed or damaged, the signal received by the safety processor 12 is changed, and the safety processor 12 can react and guarantee the safety of data in the core device 11. Further, in the present embodiment, the fifth via parts 241 are uniformly arranged in a plurality of rows, and two adjacent rows of the fifth via parts 241 are arranged in a staggered manner. By arranging the fifth via parts 241 in a plurality of rows, it is convenient when the first pins pass through the fifth via parts 241; the fifth via portions 241 in two adjacent rows are disposed in a staggered manner, so that a three-dimensional and all-directional protection layer is formed in the side wall of the depth control groove 21, and data in the core device 11 is further effectively protected.

Further, as shown in fig. 1 to 5, in the present embodiment, the depth control groove 21 includes a first depth control portion 214 located in the middle of the protection circuit board 20 and a second depth control portion 215 communicating with the first depth control portion 214, the core device 11 is provided at a position corresponding to the first depth control portion 214, and the safety processor 12 is provided at a position corresponding to the second depth control portion 215. By providing the second depth control portion 215 and the first depth control portion 214, and providing the first depth control portion 214 in the middle of the protection circuit board 20, the core device 11 provided in the first depth control portion 214 is completely protected in the protection cavity. In addition, the second depth control part 215 and the first depth control part 214 are arranged in a staggered manner, and the connection part between the first depth control part 214 and the second depth control part 215 is a wiring space for wiring between the core device 11 and the security processor 12, so that the communication space between the first depth control part 214 and the second depth control part 215 can be controlled, and further the core device 11 is effectively prevented from contacting the outside.

Further, as shown in fig. 4, in the present embodiment, the inner wall of the first depth control portion 214 has an arc-shaped structure. Because when protecting core device 11 in the protection cavity through first accuse deep portion 214, need be fixed in on the mainboard 10 with protection circuit board 20, protection circuit board 20 may touch core device 11 in the installation, and then lead to this core device 11 to damage, consequently, set up the inner wall of first accuse deep portion 214 into the arc, the damage that causes when the first accuse deep portion 214 on arc limit is fixed the in-process in the installation to the touching of core device 11 reduces, and the arc limit is difficult for being touched, can effectively ensure core device 11's safety.

Further, in the present embodiment, the protection circuit board 20 is fixed to the main board 10 by a surface mounting technique. The Surface Mount Technology is Surface Mount Technology (abbreviated as SMT), specifically, the protection circuit board 20 further includes a fourth core board 25 disposed near the motherboard 10, the fourth core board 25 is connected to the motherboard 10, no pin or a short pin is provided on the fourth core board 25, and the fourth core board 25 is soldered on the motherboard 10 by means of reflow soldering or dip soldering, so that the protection circuit board 20 is fixed on the motherboard 10 by SMT, the distance between the protection circuit board 20 and the motherboard 10 is shortened, and a better connection effect is achieved, and the protection cavity is a closed cavity.

The embodiment of the utility model provides a still provide a multifunctional terminal, including foretell printed circuit board. Specifically, the multifunction terminal is a POS (Point Of Sale), which is a device that provides data services and management services for transactions. Due to the adoption of the printed circuit board, the data security effect of the multifunctional terminal is better, and the service life is longer. In addition, the volume of the multi-functional terminal can be effectively controlled.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a printed circuit board, is applied to multi-functional terminal which characterized in that: including the mainboard, and locate core device and protection circuit board on the mainboard, protection circuit board has seted up the opening orientation the accuse deep trouth of mainboard direction, just protection circuit board with the mainboard encloses to close and forms the protection chamber, the core device all locates in the protection chamber.

2. The printed circuit board of claim 1, wherein: the protection circuit board is including being located and keeping away from the first inner core board that the mainboard direction set up, the surface of first inner core board is equipped with first serpentine, just seted up on the first inner core board and run through first inner core board and with first via hole portion and the second via hole portion that first serpentine electricity is connected respectively, be equipped with the safety treater on the mainboard, the safety treater with first via hole portion electricity is connected, the second via hole portion with the mainboard electricity is connected.

3. The printed circuit board of claim 2, wherein: the protection circuit board further comprises a second inner core board overlapped with the first inner core board, the second inner core board is arranged at the bottom of the depth control groove, the second inner core board is provided with a second serpentine in the projection range of the depth control groove, a third via part and a fourth via part which are arranged in the projection range of the depth control groove and are respectively and electrically connected with the second serpentine are arranged on the second inner core board, the safety processor is electrically connected with the third via part, and the fourth via part is electrically connected with the main board.

4. A printed circuit board according to claim 3, wherein: the first serpentine is the same length as the second serpentine.

5. A printed circuit board according to claim 3, wherein: the protection circuit board further comprises a third inner core board which is overlapped with the first inner core board and is adjacently arranged, the third inner core board and the first inner core board are arranged on two opposite sides of the second inner core board, the third inner core board and the second inner core board form the depth control groove, a plurality of fifth through hole portions which simultaneously penetrate through the second inner core board and the third inner core board are formed in the third inner core board, the safety processor further comprises a first pin which is electrically connected with the safety processor, and the first pin penetrates through the fifth through hole portions and is electrically connected with the main board.

6. The printed circuit board of claim 5, wherein: the fifth through hole parts are uniformly arranged in multiple rows, and the adjacent two rows of the fifth through hole parts are arranged in a staggered manner.

7. The printed circuit board of claim 2, wherein: the depth control groove comprises a first depth control part and a second depth control part, the first depth control part is located in the middle of the protection circuit board, the second depth control part is communicated with the first depth control part, the core device is arranged at a position corresponding to the first depth control part, and the safety processor is arranged at a position corresponding to the second depth control part.

8. The printed circuit board of claim 7, wherein: the inner wall of the first depth control part is of an arc-shaped structure.

9. The printed circuit board of claim 1, wherein: the protection circuit board is fixed on the mainboard through a surface assembly technology.

10. Multi-functional terminal, its characterized in that: comprising a printed circuit board according to any of claims 1 to 9.

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