CN104427733A - Grounded shrapnel and electronic equipment with grounded shrapnel - Google Patents
Grounded shrapnel and electronic equipment with grounded shrapnel Download PDFInfo
- Publication number
- CN104427733A CN104427733A CN201310366166.0A CN201310366166A CN104427733A CN 104427733 A CN104427733 A CN 104427733A CN 201310366166 A CN201310366166 A CN 201310366166A CN 104427733 A CN104427733 A CN 104427733A
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- shell fragment
- interface
- casing
- ground shell
- interfacing ground
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Abstract
The invention relates to a grounded shrapnel and electronic equipment with the grounded shrapnel. The grounded shrapnel comprises a first portion and a second portion, wherein the first portion is made of a conductive material, and is provided with an opening which is in the same shape as the preset interface; and the second portion is made of the conductive material and is in a cylindrical shape, the sectional shape of the cylindrical body is in the same shape as the preset interface, and one end of the cylindrical body of the second portion is mounted on the first portion and corresponds to the opening of the first portion. By the grounded shrapnel, the fixed connection between the interface and an enclosure is relatively stable, and a problem of unstable electric conduction caused by small contact area between the interface and the enclosure can be solved, so that the interface cannot be interfered by static electricity of a human body and noise caused by connected signals or charging lines.
Description
Technical field
The present invention relates to the device in the electronic device for being connected with connecting interface conductive chassis, particularly can reliably install and the interfacing ground shell fragment reliably casing is connected with interface.
Background technology
At present; a lot of electronic product all has the interface for carrying out exchanges data or the interface for charging; but, in the process that reality uses, these interfaces often can be subject to human body with electrostatic and the interference of noise that brings of connected holding wire or charging wire.Therefore, in order to eliminate these interference, these interfaces and casing are carried out, and conduction is connected is one of most effective method.As the device for realizing above-mentioned purpose, propose the parts that interface can be connected with conductive chassis.
In addition, as the product of existing similar functions, conductive gasket etc. is mainly contained.The major function of conductive gasket is to provide a deformable device being with electric conductivity, provides ground connection approach mainly to casing and these two parts of interface.In addition, the advantage of conductive gasket to provide a good ground connection approach.But conductive liner is paid somebody's debt and expected repayment later exists following shortcoming: if conductive gasket is used in casing and interface, then can be too small and cause conductive gasket reliably to carry out installing and conducting electricity because of the contact area between interface and casing.
Summary of the invention
The present invention proposes to solve above-mentioned problem, its object is to provide a kind of interfacing ground shell fragment, conduction can be carried out to electric conductor interface and casing to be connected, thus provide a covering frequence wide ranges and the grounding path that within the scope of covering frequence, impedance ground is low, further, the reliability that interfacing ground shell fragment is connected with interface and casing can be increased.
The feature of interfacing ground shell fragment of the present invention is to have: Part I, is made up of electric conducting material, and, there is the opening with predetermined interface same shape; And Part II, to be made up of electric conducting material and its main body is tubular, the cross sectional shape of cylindrical body is identical with the shape of predetermined interface, and described Part II is installed on described Part I in the mode that one end of described cylindrical body is corresponding with the opening of described Part I.
According to said structure of the present invention, interface can be made to become more reliable relative to being connected and fixed of casing, in addition, too small the caused problem that can not reliably conduct electricity of contact area between interface and casing can be overcome, so, effectively can eliminate the interference that interface is subject to the noise that the electrostatic of human body band and connected holding wire or charging wire bring.
In addition, in interfacing ground shell fragment of the present invention, it is characterized in that, described Part I and described Part II are made integratedly.
According to said structure of the present invention, can more securely interface be mounted on casing, in addition, eliminate operation Part I and Part II are installed together when mounted.
In addition, in interfacing ground shell fragment of the present invention, it is characterized in that, be formed for the shell fragment with interface contact at the inwall of the described cylindrical body of described Part II.
According to said structure of the present invention, utilize the elastic force of shell fragment to keep interface more securely, thus can more securely interface be mounted on casing.
In addition, in interfacing ground shell fragment of the present invention, it is characterized in that, the sidewall of the described cylindrical body of described Part II is removed partially by vacuum distillation, and defines shell fragment recessed to the inside.
According to said structure of the present invention, remove by the sidewall sections by cylindrical body and form to the inside recessed shell fragment, thus, shell fragment need do not formed at the inwall of cylindrical body, simplify the structure of interfacing ground shell fragment, can manufacturing cost be saved.
In addition, in interfacing ground shell fragment of the present invention, it is characterized in that, described predetermined interface comprises USB interface.
In addition, described predetermined interface is not limited to USB interface, also can be circular ps/2, audio-video interface, trapezoidal 232 interfaces, HDMI etc.
In addition, the invention provides a kind of electronic equipment, it is characterized in that, the casing of described electronic equipment is provided with interfacing ground shell fragment as above.
According to electronic equipment of the present invention, interface can be made to become more reliable relative to being connected and fixed of casing, in addition, too small the caused problem that can not reliably conduct electricity of contact area between interface and casing can be overcome, and, effectively can eliminate the interference that interface is subject to the noise that the electrostatic of human body band and connected holding wire or charging wire bring, the performance of electronic equipment is improved.
In addition, the invention is not restricted to said structure, as long as object of the present invention can be realized, can various distortion be carried out.Further, structure of the present invention, feature, advantage etc. can be clear and definite according to following execution mode.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of interfacing ground shell fragment of the present invention.
Fig. 2 is the overall schematic of interfacing ground shell fragment of the present invention.
Fig. 3 is the decomposing schematic representation of USB interface when not installing interfacing ground shell fragment of the present invention and casing.
Fig. 4 is the decomposing schematic representation of USB interface when having installed interfacing ground shell fragment of the present invention and casing.
Fig. 5 is the assembling schematic diagram that interfacing ground shell fragment of the present invention is connected with USB interface and casing.
Fig. 6 is the equivalent circuit diagram of interfacing ground shell fragment of the present invention.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.
Fig. 1 is the decomposing schematic representation of interfacing ground shell fragment of the present invention, and Fig. 2 is the overall schematic of interfacing ground shell fragment of the present invention.As shown in Figure 1, 2, interfacing ground shell fragment of the present invention has part A and part B.Part A is made up of electric conducting material, and have the opening with predetermined interface same shape, and the size of this opening is slightly larger than predetermined interface, part A is used for interfacing ground shell fragment to be connected with casing, and provides the conducting surface of interfacing ground shell fragment and casing.In addition, because the area of part A is comparatively large, so, can reliably carry out installing and can contact area be increased.
In addition, the Main Function of the part B of interfacing ground shell fragment is to provide interfacing ground shell fragment and the connection needing the predetermined interface be connected with casing, can provide the conducting surface of interfacing ground shell fragment and predetermined interface.In the present invention, part B is also made up of electric conducting material and its body shape is tubular, and the cross sectional shape of cylindrical body is identical with the shape of predetermined interface and size is slightly larger than predetermined interface, so that predetermined interface is inserted in main body.One end of the main body of part B is installed to part A in the mode corresponding with the opening of part A, the other end inserts for making predetermined interface, it is the through hole for making interface pass through in the cylindrical body of part B, further, as shown in Figure 1 and Figure 2, the sidewall of cylindrical body is removed partially by vacuum distillation, and be processed to form shell fragment recessed to the inside, but this is the one of embodiments of the present invention, and the present invention is not limited to this.Such as, also can form at the inwall of cylindrical body the shell fragment be recessed to cylinder be used for predetermined interface contact, herein, shell fragment is also made up of electric conducting material.Like this, owing to defining such shell fragment, so, can guarantee that interfacing ground shell fragment and interface form more reliable and good connection.
In addition, about the connected mode of part B and predetermined interface, be not limited only to the connection of shell fragment, multiple electrically conducting manner such as such as conductive rubber, conducting foam etc. can also be used to connect, also can realize object of the present invention.
In addition, when mounted, by modes such as welding, the part A of interfacing ground shell fragment and part B are formed as one, so that be arranged on casing.Herein, the means that part A and part B form as one are not limited to welding, such as screw can also be used to fix, bonding etc., as long as part A and part B can be formed as one.
In addition, the thickness of the part A of interfacing ground shell fragment, size and shape etc. can according to the size of casing, shape or other require carry out corresponding profile design, and, opening in part A also can design according to the shape of predetermined interface, such as predetermined interface can be circular ps/2, audio-video interface, trapezoidal 232 interfaces, HDMI etc., now correspondingly designs the shape of the opening in part A.
In addition, the major function of part B is connecting interface and casing metal, with the opening of part A correspondingly, its cross sectional shape and predetermined interface and earthing mode match, such as predetermined interface can be circular ps/2, audio-video interface, trapezoidal 232 interfaces, HDMI etc., and now the cross sectional shape of the main body of part B is the shape identical with above-mentioned interface.
In addition, in the present invention, the part A of interfacing ground shell fragment and part B can utilize electric conducting material to make integratedly, thus, eliminate operation part A and part B are installed together when mounted.
Then, the installation situation of docking port grounding elastic part is described.
Fig. 3 is interface (being such as herein USB interface) when not installing interfacing ground shell fragment of the present invention and the decomposing schematic representation of casing.In figure 3, be described for the Installation Modes of USB port.As shown in Figure 3, the female mouth of USB be arranged on such as printed circuit board (PCB) (Printed Circuit Board:PCB) can be connected with the USB device of outside by the opening on casing.But, in the case of figure 3, because the female mouth of USB is directly installed on casing, so, there is the unstable problem of connection of the female mouth of USB and casing.In addition, also exist be subject to human body with the problem of the interference of noise that causes such as electrostatic.
In contrast, Fig. 4 is the decomposing schematic representation of USB interface when having installed interfacing ground shell fragment of the present invention and casing.
First, the part A of casing with interfacing ground shell fragment is connected, interfacing ground shell fragment is fixed on casing, then, female for the USB installed on a printed circuit mouth is inserted in the part B of interfacing ground shell fragment, the female mouth of external USB equipment and USB can be made like this to be connected.Because interfacing ground shell fragment has part A, so, can easily interfacing ground shell fragment be fixed on casing.In addition, because part B has shell fragment, so, the connection of interfacing ground shell fragment and the female mouth of USB can be made to become more firm, certainly, also can not have shell fragment in part B, also can realize object of the present invention.Figure 5 illustrates interfacing ground shell fragment be connected with USB interface and casing after assembling schematic diagram.
As mentioned above, interfacing ground shell fragment of the present invention is utilized to be connected and be fixed on casing by female for USB mouth, can stablize due to interfacing ground shell fragment and keep the female mouth of USB securely, eliminate too small the caused problem that can not reliably install of contact area between interface and casing, so the female mouth of USB becomes more reliable relative to being connected and fixed of casing.In addition, the conducting path that interfacing ground shell fragment of the present invention can provide interface to be connected with casing, overcome too small the caused problem that can not reliably conduct electricity of contact area between interface of the prior art and casing, so, effectively can eliminate the interference that interface is subject to the noise that the electrostatic of human body band and connected holding wire or charging wire bring.
In addition, the equivalent circuit diagram of interfacing ground shell fragment of the present invention shown in Figure 6.Interfacing ground shell fragment of the present invention can provide a good earthing effect for interface.Can be found out by the equivalent electric circuit shown in Fig. 6, interfacing ground shell fragment of the present invention can provide a low current path at direct current to high-frequency band.Like this, the earthing mode of a good low-impedance antistatic can be provided, in addition, the screening effectiveness of casing can also be increased.
Specifically, as shown in Figure 6, L2 is the equivalent inductance between interface and part B, and L1 is the equivalent inductance between part A and casing, and R is the resistance of interfacing ground shell fragment.In addition, C is the equivalent capacity between interface and part B.About the equivalent capacity between part A and casing, when normal mounting, because the area of part A and chassis contact is large, and, contact that can be very good, therefore the electric capacity between part A and casing much smaller than the electric capacity between part B and interface, therefore, it is possible to the electric capacity between part A and casing is ignored.
Like this, when frequency ratio is higher, because L1 and L2 is smaller, the reactance of its inductance is smaller, and in addition, C is larger, and its reactance is also smaller.Result in formation of a low-impedance ground connection approach and come connecting interface and casing.
In addition, if common interface can be connected with casing, then also can not be very high in the impedance of low frequency, but because the equivalent inductance of its coupling part is larger, equivalent capacity is smaller, and large at the impedance comparison of high frequency like this.In addition, the frequency of frequency and extraneous harassing and wrecking generation noise that usual pcb board produces noise can reach higher magnitude (magnitude that MHz, GHz are such), in such magnitude, interfacing ground shell fragment can provide a low-down impedance ground compared with common earthing method.
More than enumerated embodiment to describe the present invention, but the present invention is not limited to this, various change can be carried out without departing from the scope of spirit of the present invention.
Claims (6)
1. an interfacing ground shell fragment, is characterized in that, has:
Part I, is made up of electric conducting material, and, there is the opening with predetermined interface same shape; And
Part II, is made up of electric conducting material and its main body is tubular, and the cross sectional shape of cylindrical body is identical with the shape of predetermined interface,
Described Part II is installed on described Part I in the mode that one end of described cylindrical body is corresponding with the opening of described Part I.
2. interfacing ground shell fragment as claimed in claim 1, is characterized in that,
Described Part I and described Part II are made integratedly.
3. interfacing ground shell fragment as claimed in claim 1 or 2, is characterized in that,
Be formed for the shell fragment with interface contact at the inwall of the described cylindrical body of described Part II.
4. interfacing ground shell fragment as claimed in claim 1 or 2, is characterized in that,
The sidewall of the described cylindrical body of described Part II is removed partially by vacuum distillation, and defines shell fragment recessed to the inside.
5. interfacing ground shell fragment as claimed in claim 1 or 2, is characterized in that,
Described predetermined interface comprises USB interface.
6. an electronic equipment, is characterized in that,
The casing of described electronic equipment is provided with the interfacing ground shell fragment described in any one of Claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366166.0A CN104427733A (en) | 2013-08-21 | 2013-08-21 | Grounded shrapnel and electronic equipment with grounded shrapnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366166.0A CN104427733A (en) | 2013-08-21 | 2013-08-21 | Grounded shrapnel and electronic equipment with grounded shrapnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104427733A true CN104427733A (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310366166.0A Pending CN104427733A (en) | 2013-08-21 | 2013-08-21 | Grounded shrapnel and electronic equipment with grounded shrapnel |
Country Status (1)
| Country | Link |
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| CN (1) | CN104427733A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4003069A1 (en) * | 1990-02-02 | 1991-08-08 | Broadcast Television Syst | Video connector - has BNL bush mounted on plate with housing contacts to ground plug input |
| JP2003233981A (en) * | 2002-02-08 | 2003-08-22 | Hitachi Ltd | Electronic device |
| JP2008226786A (en) * | 2007-03-15 | 2008-09-25 | Funai Electric Co Ltd | Electronic equipment |
| CN201174083Y (en) * | 2008-02-29 | 2008-12-31 | 联想(北京)有限公司 | Computer port with electrostatic protection and computer |
| CN201352455Y (en) * | 2008-12-17 | 2009-11-25 | 深圳易拓科技有限公司 | Electrostatic discharge sheet of mobile hard disk and mobile hard disk |
| CN201430320Y (en) * | 2009-06-22 | 2010-03-24 | 英业达科技有限公司 | Fixing device of electrical connector |
| US20110092097A1 (en) * | 2008-11-18 | 2011-04-21 | Kingston Technology Corporation | Usb connector |
| US20120050938A1 (en) * | 2010-08-27 | 2012-03-01 | Apple Inc. | Esd protection in a very small form factor consumer electronic product |
| US20120099742A1 (en) * | 2010-10-22 | 2012-04-26 | Research In Motion Limited | Audio jack with esd protection |
| CN203492257U (en) * | 2013-08-21 | 2014-03-19 | 同方威视技术股份有限公司 | Interface grounded connector and electronic device with interface grounded connector |
-
2013
- 2013-08-21 CN CN201310366166.0A patent/CN104427733A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4003069A1 (en) * | 1990-02-02 | 1991-08-08 | Broadcast Television Syst | Video connector - has BNL bush mounted on plate with housing contacts to ground plug input |
| JP2003233981A (en) * | 2002-02-08 | 2003-08-22 | Hitachi Ltd | Electronic device |
| JP2008226786A (en) * | 2007-03-15 | 2008-09-25 | Funai Electric Co Ltd | Electronic equipment |
| CN201174083Y (en) * | 2008-02-29 | 2008-12-31 | 联想(北京)有限公司 | Computer port with electrostatic protection and computer |
| US20110092097A1 (en) * | 2008-11-18 | 2011-04-21 | Kingston Technology Corporation | Usb connector |
| CN201352455Y (en) * | 2008-12-17 | 2009-11-25 | 深圳易拓科技有限公司 | Electrostatic discharge sheet of mobile hard disk and mobile hard disk |
| CN201430320Y (en) * | 2009-06-22 | 2010-03-24 | 英业达科技有限公司 | Fixing device of electrical connector |
| US20120050938A1 (en) * | 2010-08-27 | 2012-03-01 | Apple Inc. | Esd protection in a very small form factor consumer electronic product |
| US20120099742A1 (en) * | 2010-10-22 | 2012-04-26 | Research In Motion Limited | Audio jack with esd protection |
| CN203492257U (en) * | 2013-08-21 | 2014-03-19 | 同方威视技术股份有限公司 | Interface grounded connector and electronic device with interface grounded connector |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |
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| RJ01 | Rejection of invention patent application after publication |