CN205124127U - Device structure of mainboard unit - Google Patents

Device structure of mainboard unit Download PDF

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Publication number
CN205124127U
CN205124127U CN201520641494.1U CN201520641494U CN205124127U CN 205124127 U CN205124127 U CN 205124127U CN 201520641494 U CN201520641494 U CN 201520641494U CN 205124127 U CN205124127 U CN 205124127U
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China
Prior art keywords
protection device
electrostatic protection
electrostatic
main board
mainboard
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Active
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CN201520641494.1U
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Chinese (zh)
Inventor
徐章龙
霍东建
蒋伟
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
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Priority to CN201520641494.1U priority Critical patent/CN205124127U/en
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Abstract

The utility model provides a device structure of mainboard unit, includes: wait to carry on electrostatic protection device and electrostatic protection device, wait to carry out the electrostatic protection device and correspond the distance of electrostatic protection device on the mainboard is at the predetermined within range that touches. The embodiment of the utility model provides a scheme is close to the setting with the electrostatic protection device of waiting to carry out the electrostatic protection device and corresponding on the mainboard, and the distance between them is at the predetermined within range that touches, therefore, do not adopting at operating personnel under the condition of electrostatic protection measure when holding the mainboard, the electrostatic protection device static of can releasing well, thereby the static on the operating personnel finger can be released through the electrostatic protection device, thereby treat well and carry out electrostatic protection device protection, the whole antistatic effect of mainboard has been improved.

Description

Main board elements structure
Technical field
The utility model relates to electronic circuit field, particularly a kind of main board elements structure.
Background technology
By friction or with charged materials contacts etc., approach can cause human body static electrification to human body, then by other conductive discharges of Body contact.Under the environment of drying, human body more easily accumulates electrostatic, increases the possibility of human body static electrification.At electronic applications, after PCBA (PrintedCircuitBoard+Assembly) has produced, the operating personnel such as factory personnel, commissioning staff often need to use hand-held mainboard, if operating personnel do not adopt electrostatic defending measure, the electrostatic of human body will be delivered on the device of mainboard by finger, if the antistatic capacity of mainboard is weak, so electrostatic extremely easily just can puncture the device on mainboard, especially the device that antistatic capacity is more weak, cause device function extremely even to damage, finally cause board dysfunction.
The antistatic design of current mainboard; general employing metal shell shields; or increase electrostatic devices close-connected with it for special port signal; and do not consider other electrostatic sensitivity device, thus effective electrostatic protection can not be carried out to these electrostatic sensitivity devices and sensitive signal.When the finger of operating personnel touches motherboard card, the electrostatic of finger easily directly acts on the signal port of these electrostatic sensitivity devices or sensitive signal, causes device failure, causes main board function abnormal.
Utility model content
Based on this, the object of the utility model embodiment is to provide a kind of main board elements structure, and it can carry out electrostatic defending to the signal port of the electrostatic sensitivity device on circuit main board or sensitive signal effectively, improves the overall antistatic effect of mainboard.
For achieving the above object, the utility model embodiment by the following technical solutions:
A kind of main board elements structure, comprising: pending electrostatic protection device and electrostatic protection device, described pending electrostatic protection device and the corresponding described electrostatic protection device distance on mainboard is within the scope of predetermined touch.
Based on the utility model embodiment scheme as above, it is close on mainboard with corresponding electrostatic protection device by pending electrostatic protection device to arrange, and the distance between them is within the scope of predetermined touch, thus, when operating personnel when not adopting electrostatic defending measure with hand-held mainboard time, because the distance between pending electrostatic protection device and corresponding electrostatic protection device is within the scope of predetermined touch, and electrostatic protection device can static electricity discharge well, thus the electrostatic on operating personnel's finger can be released by electrostatic protection device, thus well pending electrostatic protection device is protected, improve the overall antistatic effect of mainboard.
Accompanying drawing explanation
Fig. 1 is the simple principle schematic diagram of main board elements structure of the present utility model;
Entirety during hand-held mainboard in the concrete example of Fig. 2 one in existing mode and hand touch the close-up schematic view of part;
The close-up schematic view of entirety when Fig. 3 is the hand-held mainboard based on the utility model scheme in concrete example one and hand touch part;
Structural representation when Fig. 4 is the hand-held mainboard in concrete example two in existing mode;
Structural representation when Fig. 5 is the hand-held mainboard based on the utility model scheme in concrete example two;
Structural representation when Fig. 6 is the hand-held mainboard in concrete example three in existing mode;
Structural representation when Fig. 7 is the hand-held mainboard based on the utility model scheme in concrete example three.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that embodiment described herein only in order to explain the utility model, do not limit protection range of the present utility model.
The main board elements structure that the utility model embodiment provides comprises: pending electrostatic protection device 101 and electrostatic protection device 102, wherein, pending electrostatic protection device 101 and the corresponding electrostatic protection device 102 distance d on mainboard 103 is within the scope of predetermined touch.
Based on the present embodiment scheme as above, it is close on mainboard with corresponding electrostatic protection device by pending electrostatic protection device to arrange, and the distance between them is within the scope of predetermined touch, thus, when operating personnel when not adopting electrostatic defending measure with hand-held mainboard time, because the distance between pending electrostatic protection device and corresponding electrostatic protection device is within the scope of predetermined touch, and electrostatic protection device can static electricity discharge well, thus the electrostatic on operating personnel's finger can be released by electrostatic protection device, thus well pending electrostatic protection device is protected, improve the overall antistatic effect of mainboard.
Wherein, above-mentioned default touch scope can set based on actual conditions.Wherein in a kind of mode, can binding operation personnel hand-held mainboard time actual scene set.Such as, during hand-held mainboard, usually be all that the finger contact of operating personnel is to mainboard, and generally, in some hand-held modes, a finger contact may be only had to mainboard in certain one side of mainboard, or have certain distance between the contact position respectively pointing on mainboard, therefore, in a concrete example, above-mentioned default touch scope can be determined according to the single finger touch scope of human body.The single finger touch scope of this human body can be obtained by statistical analysis, or also can be arrange in conjunction with empirical value.Consider when finger touch, pending electrostatic protection device, the electrostatic protection device centre position all likely when finger touch, also the marginal position all likely when finger touch, therefore, this default touch scope can be set as the half of the single finger touch scope of human body, namely 1/2nd.In a kind of specific implementation of the utility model scheme, this default touch scope can be set as 10mm (millimeter).
Based on the thought of the utility model scheme as above, illustrate in detail below in conjunction with wherein concrete example.
Concrete example one
In the scheme of this concrete example, be using electrostatic devices existing on mainboard as electrostatic protection device, by carrying out rational deployment to electrostatic devices, to make the distance between electrostatic devices and each pending electrostatic protection device within the scope of above-mentioned default touch.
The electrostatic designs having some mainboards to carry out at present increases electrostatic devices on the signal of some ports, to carry out electrostatic protection to port signal, but, due to the restriction of motherboard space and cost, can not all signals all be protected.Entirety when hand-held mainboard based on this existing mode has been shown in Fig. 2 and the close-up schematic view of hand touch part.
As shown in Figure 2, around board edges, placed some ports, some port signals placed electrostatic devices, placed again resistance and other components and parts at port periphery simultaneously.When the hand-held mainboard of operating personnel, finger can touch the device of board edges.Due to the limited amount of electrostatic devices; and layout comparison is random; device that can not be completely all to board edges is protected; when pointing the position of the components and parts touched in the enlarged drawing shown in Fig. 2; if generation electrostatic; and these components and parts are Electrostatic Discharge Sensitive, just likely cause component failure.
Entirety when hand-held mainboard based on the utility model scheme has been shown in Fig. 3 and the close-up schematic view of hand touch part.
As shown in Figure 3, electrostatic devices is not directly placed on the position of corresponding signal port, but is connected with the signal end of corresponding components and parts by holding wire, and namely electrostatic devices does not need to be placed on the signal of components and parts.As shown in Figure 3, A is electrostatic devices, and components and parts B is Electrostatic Discharge Sensitive, and electrostatic devices A is placed in a signal line, is linked to the signal end of corresponding components and parts, the pin of components and parts B does not connect any electrostatic devices by signal lead.Because the distance of Electrostatic Discharge Sensitive B and electrostatic devices A is within the scope of default touch, when the hand-held mainboard of operating personnel, if when the finger touch of operating personnel is to the surrounding of components and parts B, finger will touch components and parts B and electrostatic devices A simultaneously.Because electrostatic can preferentially be released along by electrostatic devices A, thus components and parts B can be avoided to be lost efficacy by electrostatic breakdown.It should be noted that, be used for showing the cabling of holding wire in Fig. 3, be used to show that electrostatic devices is connected by the signal end of this cabling with corresponding element device, because the integration of mainboard embeds design, do not need to show on the mainboard interface of reality.
Concrete example two
In the scheme of this concrete example, be on mainboard existing metal shell device as electrostatic protection device, and the signal port of electrostatic sensitivity device on mainboard, electrostatic sensitive signal all can as pending electrostatic protection device, and rational deployment is carried out to electrostatic protection device and pending electrostatic protection device, to make the distance between metal shell device and pending electrostatic protection device within the scope of above-mentioned default touch.
The electrostatic designs of some mainboards at present, for the object of shielding or the topology requirement of device itself, can be provided with the metal shell of some, but these metal shells is all random setting.In most cases, the setting position of electrostatic sensitivity device or sensitive signal may away from the device of band metal shell, the position of such as, electrostatic sensitivity device shown in Fig. 4 or sensitive signal C, metal shell F.In the case, when the hand-held mainboard of operating personnel, the finger of operating personnel may cover completely and be pressed on Sensitive Apparatus and sensitive signal end, thus cause device failure.
Structural representation during the hand-held mainboard based on this concrete example of the utility model scheme has been shown in Fig. 5, as shown in Figure 5, by the rational deployment to components and parts, the pending electrostatic protection devices such as electrostatic sensitivity device or sensitive signal end existing metal shell device on motherboard card is placed, these electrostatic sensitivity devices can be provided separately, namely some electrostatic sensitivity device and some metal shells are close to and arrange, and some electrostatic sensitivity device and another metal shell are close to and arrange.Thus the good earth feature of metal shell can be utilized, when the hand-held mainboard of operating personnel, the finger contact motherboard card of operating personnel, a finger part can press on the pending electrostatic protection device such as electrostatic sensitivity device or sensitive signal end, the another part simultaneously pointed can by being pressed on metal shell, because metal shell is directly connected to the ground, energy is static electricity discharge preferably, electrostatic is directly released on the ground by metal shell, thus can not electrostatic sensitivity device be passed through, also can not be gone to coupled device by sensitive signal port transmission, thus effectively pending electrostatic protection device is protected.
Wherein, above-mentioned metal shell device can be radome, also can be the device of metal shell such as band such as USB (UniversalSerialBus, USB) terminal, network interface terminal etc.Distance between pending electrostatic protection device and office's metal shell frame within the scope of above-mentioned predetermined touch, such as, in 10mm (millimeter) scope.
Concrete example three
In the scheme of this concrete example, the difference in height in conjunction with components and parts is protected electrostatic sensitive signal.
Be arranged on each device on mainboard, due to the architectural difference of each device, the height of each device is not identical, if each device is arbitrarily placed, as shown in Figure 6, for some electrostatic sensitivity devices, the position that the finger being easily in operating personnel easily touches, C region such as shown in Fig. 6, the device that electrostatic can be discharged in C region gets on, thus causes damage to the device in C region or the device of sensitive signal port that is connected with the part of C region device.
Based on this, in this concrete example of the present utility model, can using highly higher can the device of antistatic as electrostatic protection device, and electrostatic sensitivity device, the signal port of electrostatic sensitive signal all can as pending electrostatic protection device, and rational deployment is carried out to electrostatic protection device and pending electrostatic protection device, to make distance between any two described Anti-static devices within the scope of described predetermined touch, and described pending electrostatic protection device is between each described Anti-static device, thus the pending electrostatic protection device that position can be enable lower is in covering in region of these highly higher Anti-static devices formation.
Structural representation during the hand-held mainboard based on this concrete example has been shown in Fig. 7.As shown in Figure 7, by the rational deployment to components and parts, two or more device is near arranging, and the distance between any two devices is all within the scope of above-mentioned predetermined touch.The height of each Anti-static device is higher than the height of pending electrostatic protection device.Be not a horizontal structure when considering finger presses, therefore, the difference in height between each Anti-static device and pending electrostatic protection device should be greater than or equal to preset height range threshold.This preset height range threshold can be determined based on the difference in height pointed during finger presses, and in a concrete example, this preset height range threshold can be set as 5 millimeters.
In the case, due to the existence of difference in height, higher each Anti-static device can form one and cover region, highly low pending electrostatic protection device (such as electrostatic sensitivity device or be connected with the device of electrostatic sensitive signal) is positioned over this and covers in region.Such as, the device A in Fig. 7 and device B defines one and covers region, and electrostatic sensitivity device C covering in region of being placed on that device A and device B formed.When the hand-held board of operating personnel; that brings due to difference in height covers region and can protect pending electrostatic protection device; the finger of operating personnel can not touch the pending electrostatic protection device covered in region, thus can protect board allomeric function not by electrostatic influence.
Wherein, the Anti-static device that above-mentioned height is higher can be can electric capacity, inductance, wire terminal, plug wire stand, crystal oscillator, earphone stand, the ESD (Electro-Staticdischarge of static electricity discharge, static discharge) any one or combination in any in device, diode etc., can also be the plastic contact etc. of not static conductive, also can be any one or combination in any in electric capacity, inductance, wire terminal, plug wire stand, crystal oscillator, earphone stand, ESD device, diode, plastic contact.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (10)

1. a main board elements structure, is characterized in that, comprising: pending electrostatic protection device and electrostatic protection device, and described pending electrostatic protection device and the corresponding described electrostatic protection device distance on mainboard is within the scope of predetermined touch.
2. main board elements structure according to claim 1, is characterized in that, described pending electrostatic protection device is the signal port of electrostatic sensitivity device or electrostatic sensitive signal.
3. main board elements structure according to claim 1, is characterized in that, described predetermined touch scope is 1/2nd of the single finger touch scope of human body.
4. main board elements structure according to claim 1, it is characterized in that, described electrostatic protection device comprises plural Anti-static device, each described Anti-static device is higher than described pending electrostatic protection device preset height range threshold, distance between any two described Anti-static devices is within the scope of described predetermined touch, and described pending electrostatic protection device is between each described Anti-static device.
5. main board elements structure according to claim 4, it is characterized in that, described Anti-static device comprises any one or combination in any in electric capacity, inductance, wire terminal, plug wire stand, crystal oscillator, earphone stand, plastic contact, ESD device, diode.
6. main board elements structure according to claim 4, is characterized in that, described preset height range threshold is 5 millimeters.
7. main board elements structure according to claim 1, is characterized in that, described electrostatic protection device is metal shell device.
8. main board elements structure according to claim 7, is characterized in that, described metal shell device comprises any one or combination in any in radome, USB terminal, network interface terminal.
9. main board elements structure according to claim 1, is characterized in that, described electrostatic protection device is electrostatic devices, and described electrostatic devices is connected with the signal end of corresponding components and parts by holding wire.
10. the main board elements structure according to claim 1 to 9 any one, is characterized in that, described predetermined touch scope is 10 millimeters.
CN201520641494.1U 2015-08-24 2015-08-24 Device structure of mainboard unit Active CN205124127U (en)

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Application Number Priority Date Filing Date Title
CN201520641494.1U CN205124127U (en) 2015-08-24 2015-08-24 Device structure of mainboard unit

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Application Number Priority Date Filing Date Title
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CN205124127U true CN205124127U (en) 2016-03-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109219283A (en) * 2017-07-03 2019-01-15 北京小米移动软件有限公司 Electronic equipment
CN112566001A (en) * 2020-12-04 2021-03-26 广州朗国电子科技有限公司 Earphone detection circuit and terminal equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109219283A (en) * 2017-07-03 2019-01-15 北京小米移动软件有限公司 Electronic equipment
CN112566001A (en) * 2020-12-04 2021-03-26 广州朗国电子科技有限公司 Earphone detection circuit and terminal equipment

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