CN203658957U - Low-radiation mouse - Google Patents
Low-radiation mouse Download PDFInfo
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- CN203658957U CN203658957U CN201320876060.0U CN201320876060U CN203658957U CN 203658957 U CN203658957 U CN 203658957U CN 201320876060 U CN201320876060 U CN 201320876060U CN 203658957 U CN203658957 U CN 203658957U
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Abstract
The utility model discloses a low-radiation mouse comprising a mouse body, a mouse cable, and a cable plug. The mouse body comprises a housing, a control circuit board, and a flexible printed circuit board shielding cover. The control circuit board is a completed shielding body constituted by four printed circuit boards. The flexible printed circuit board shielding cover is disposed on the control circuit board in a wrapped manner to form a sealing shielding chamber, and the flexible printed circuit board shielding cover and the control circuit board are disposed in the housing. The outer surface of the mouse cable is provided with three shielding layers in a wrapped manner, one end is connected with the control circuit board, and the other end is connected with the cable plug. The low-radiation mouse is advantageous in that the electromagnetic radiation intensity of the mouse can be obviously reduced, the electromagnetic leakage problem can be solved, and in the frequency range from 150 kHz to1.5 GHz, the shielding effect can reach the range from 70dB to80dB.
Description
Technical field
The utility model relates to a kind of mouse, particularly relates to the lower anti-electromagnetic information leakage mouse of a kind of radiation.
Background technology
At present, mouse, as the indispensable building block of computing machine, has been widely used in various information processings.The making material of on is plastics, and internal control circuit plate is not taked again any effective electromagnetic shielding measure, and the electromagnetic wave producing when its work can be had a mind to by mistake space radiation towards periphery.Due to ELECTROMAGNETIC RADIATION SIGNATURE, not only spectrum component is abundant, and carries the information of processing in computing machine, is easy to cause the generation of the leakage of a state or party secret.In order to realize information security, develop low radiation mouse and become technical matters urgently to be resolved hurrily.
CN 102591495 discloses a kind of low radiation mouse, and its control circuit board adopts four-sheet structure, and is provided with shielding cover board in outside again, forms shielding cavity with control circuit board, and cable adopts four-layer structure shielding mode.This technical scheme has reduced the electromagnetic information leakage of mouse really, but structure is too complicated, and it is larger that technique realizes difficulty.As: 1) shielding cover board material adopts brass, and is irregular octahedral structure, and because on inner space is narrow and small, and left and right press key, roller place all need opening, not only processed complex, and easily cause leakage; 2) cable shielding layer comprises two-layer copper mesh layers and two-layer tinfoil layer, and because shielded cable adopts four-layer structure, and cable most external also has one deck restrictive coating, causes cable diameter to become original 2～3 times, and it is stiff that cable becomes, and mouse moves very inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of low radiation mouse, significantly to reduce the electromagnetic radiation intensity of mouse, solve electromagnetic leakage problem, and mouse processing technology is simple, is easy to processing.
Low radiation mouse of the present utility model is made up of mouse body, mouse cable and cable plug, wherein said mouse body comprises housing, control circuit board and flexible PCB radome, and described control circuit board and flexible PCB radome are arranged in described housing.
Described control circuit board is four layers of printed board structure, and wherein the second layer is routing layer, and ground floor, the 3rd layer and the 4th layer are for covering copper ground plane, and described four layers of printed board edge connect with soldering, form a complete shield.
Described flexible PCB radome is wrapped on control circuit board, forms the shielding cavity of a sealing.
Described mouse cable is connected on control circuit board, at three layers of screen layer of outside surface parcel of described mouse cable, is followed successively by from inside to outside aluminium foil layer, tin-coated copper layer and shielding heat-shrinkable T bush layer.
Described cable plug is connected to the other end of mouse cable.
In the utility model, described flexible PCB radome material is copper nickel conductive fabric, and it can make full use of the inner narrow space of mouse, and at mousebutton place also without opening, guaranteed the globality of mouse screen effect.Adopt these two kinds of Metal Phase combinations of copper and mickel, splendid electric conductivity and good effectiveness are provided.
Cable plug of the present utility model adopts aviation plug, in the inside of described cable plug, metallic shield circle is set, and the screen layer of mouse cable turns over and is enclosed within on described shielding ring, has realized 360 ° of electric continuities of screen layer and aviation plug shell.
In described mouse cable screen layer, aluminium foil layer adopts 50u thick aluminum foil straight packet mode, efficiently solves and sticks up pin problem, and directly wrap Duplication and exceed 15% of girth, guarantees that signal transmission is interference-free or leaks; Shielding heat-shrinkable T bush had both played screen layer effect, had replaced again cable cover(ing).
The utility model also in the control circuit on described control circuit board 24MHz crystal oscillator two ends, integrated circuit clock be connected respectively shunt capacitance with data terminal, the other end ground connection of described shunt capacitance.
Compared with the prior art, low radiation mouse of the present utility model has the following advantages: 1, mouse control circuit board adopts four layers of printed board structure, and at its outside copper nickel conductive fabric radome that increases, has significantly reduced electromagnetic information leakage.2, in mouse control circuit, the data of 24MHz crystal oscillator two ends, integrated circuit and clock short end add respectively shunt capacitance, and filtering self resonance disturbs and crosstalking to printed board circuit.3, mouse cable outside surface is enclosed with three layers of screen layer, and outermost shielding heat-shrinkable T bush not only plays shielding action but also replaced cable cover(ing), cable is easy to again in meeting leakage of information requirement mobile.Cable plug is the inner aviation plug with metallic shield circle, has realized 360 ° of electric continuities of screen layer and aviation plug shell.4, low radiation mouse manufacture craft of the present utility model is simple, and cost is low, is easy to produce in enormous quantities.
Accompanying drawing explanation
Fig. 1 is the structural representation of the low radiation mouse of the utility model.
Fig. 2 is the decomposition texture schematic diagram of the low radiation mouse of the utility model.
Fig. 3 is the mouse cable sectional structure chart of the low radiation mouse of the utility model.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail.
The structure of low radiation mouse as shown in Figure 1, is made up of mouse body 1, mouse cable 2 and cable plug 3.The inner structure of its mouse body 1, as Fig. 2, comprises the parts such as upper and lower casing 4, flexible PCB radome 5, control circuit board 6 and roller 8.Flexible PCB radome 5 is wrapped on control circuit board 6, forms the shielding cavity of a sealing, is together arranged in housing 4.Roller 8 is arranged on control circuit board 6, is positioned at outside housing 4 through flexible PCB radome 5 rear sections.On flexible PCB radome 5 relevant positions, have cable outlet hole, mouse cable 2 one end are connected on control circuit board 6 by cable outlet hole, other end stube cable plug 3.The junction of mouse cable 2 and flexible PCB radome 5 is with conductive adhesive.
Control circuit board 6 adopts four layers of printed board structure, and wherein the second layer is routing layer, and ground floor, the 3rd layer and the 4th layer are and cover copper ground plane, and four layers of printed board edge connect with soldering, form a complete shield.
In control circuit on control circuit board 6, respectively add a 22p shunt capacitance at 24MHz crystal oscillator two ends, simultaneously at clock and the data terminal of integrated circuit, connect respectively the shunt capacitance of 33p, the other end ground connection of above-mentioned shunt capacitance, disturbs and crosstalking to printed board circuit with the resonance of filtering self.
The material of flexible PCB radome 5 is copper nickel conductive fabric.Copper nickel conductive fabric is on dacron, first to plate layer of metal nickel, plates high-conductivity copper layer on nickel, then on copper layer, plates layer of metal nickel again.Adopt these two kinds of Metal Phase combinations of copper and mickel, splendid electric conductivity and good effectiveness are provided.The copper nickel conductive fabric back side, with conducting resinl, sticks on control circuit board 6 by conducting resinl, due to its flexibility, can make full use of the inner narrow space of mouse, and at mousebutton place also without opening, guaranteed the globality of mouse screen effect.The thickness of copper nickel conductive fabric is selected 0.09mm.
The structure of mouse cable 2, as Fig. 3, is enclosed with three layers of screen layer at its outside surface, and mouse cable 2 is followed successively by wire 9, aluminium foil layer 10, tin-coated copper layer 11 and shielding heat-shrinkable T bush layer 12 from inside to outside.Wherein, aluminium foil layer 10 uses 50u thick aluminum foil directly to wrap, and effectively solves and sticks up pin problem, and directly wrap Duplication and exceed 15% of girth, guarantees that signal transmission is interference-free or leaks; Shielding heat-shrinkable T bush layer 12 is to apply layer of metal silver electroconductive binder at the inwall of heat-shrink tube to make, and shielding heat-shrinkable T bush had both played screen layer effect, had replaced again cable cover(ing), can be easy to again mobile when making cable meet leakage of information requirement.
Cable plug 3 adopts aviation plug, is provided with metallic shield circle in cable plug 3 inside.When use, the screen layer of mouse cable 2 turns over and is enclosed within on shielding ring, and then clamping nut has been realized 360 ° of electric continuities of screen layer and aviation plug shell, has thoroughly solved the electromagnetic leakage of mouse interface part.Also be added with metal spring cover in mouse cable 2 and the junction of cable plug 3, prevent that mouse cable 2 from wrecking because of aggressive bend.
Through actual measurement, low radiation mouse of the present utility model can reach 70dB～80dB in 150kHz～1.5GHz screen effect.
Claims (7)
1. a low radiation mouse, formed by mouse body, mouse cable and cable plug, it is characterized in that described mouse body comprises housing, control circuit board and flexible PCB radome, described control circuit board and flexible PCB radome are arranged in described housing;
Described control circuit board is four layers of printed board structure, and wherein the second layer is routing layer, and ground floor, the 3rd layer and the 4th layer are for covering copper ground plane, and described four layers of printed board edge connect with soldering, form a complete shield;
Described flexible PCB radome is wrapped in and on control circuit board, forms closed shield chamber;
Described mouse cable is connected on control circuit board, at three layers of screen layer of outside surface parcel of described mouse cable, is followed successively by from inside to outside aluminium foil layer, tin-coated copper layer and shielding heat-shrinkable T bush layer;
Described cable plug is connected to the other end of mouse cable.
2. low radiation mouse according to claim 1, is characterized in that described flexible PCB radome is copper nickel conductive fabric.
3. low radiation mouse according to claim 1, is characterized in that described cable plug is aviation plug.
4. according to the low radiation mouse described in claim 1 or 3, it is characterized in that, in the inside of described cable plug, metallic shield circle is set, the screen layer of described mouse cable turns over and is enclosed within on described shielding ring.
5. low radiation mouse according to claim 1, is characterized in that described aluminium foil layer adopts straight packet mode parcel.
6. low radiation mouse according to claim 5, is characterized in that described aluminium foil layer adopts 50u thick aluminum foil.
7. low radiation mouse according to claim 1, is characterized in that 24MHz crystal oscillator two ends, integrated circuit clock and the data terminal in control circuit is connected respectively shunt capacitance on described control circuit board, the other end ground connection of described shunt capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876060.0U CN203658957U (en) | 2013-12-30 | 2013-12-30 | Low-radiation mouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876060.0U CN203658957U (en) | 2013-12-30 | 2013-12-30 | Low-radiation mouse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203658957U true CN203658957U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320876060.0U Expired - Fee Related CN203658957U (en) | 2013-12-30 | 2013-12-30 | Low-radiation mouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203658957U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555113A (en) * | 2016-02-01 | 2016-05-04 | 深圳市信维通信股份有限公司 | Shielding cover structure |
| CN107221378A (en) * | 2017-06-09 | 2017-09-29 | 山东超越数控电子有限公司 | A kind of method of cable shielding in ruggedized computer |
| CN108491097A (en) * | 2018-02-06 | 2018-09-04 | 柳州佰利科技有限责任公司 | A kind of anti-tampering mouse |
| CN108860664A (en) * | 2018-06-20 | 2018-11-23 | 上海卫星工程研究所 | The novel thermal controls apparatus of spatial flexible mechanism |
-
2013
- 2013-12-30 CN CN201320876060.0U patent/CN203658957U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555113A (en) * | 2016-02-01 | 2016-05-04 | 深圳市信维通信股份有限公司 | Shielding cover structure |
| CN105555113B (en) * | 2016-02-01 | 2019-02-05 | 深圳市信维通信股份有限公司 | Shielding case structure |
| CN107221378A (en) * | 2017-06-09 | 2017-09-29 | 山东超越数控电子有限公司 | A kind of method of cable shielding in ruggedized computer |
| CN108491097A (en) * | 2018-02-06 | 2018-09-04 | 柳州佰利科技有限责任公司 | A kind of anti-tampering mouse |
| CN108860664A (en) * | 2018-06-20 | 2018-11-23 | 上海卫星工程研究所 | The novel thermal controls apparatus of spatial flexible mechanism |
| CN108860664B (en) * | 2018-06-20 | 2020-07-14 | 上海卫星工程研究所 | Novel thermal control device for space flexible mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20201230 |