CN201557318U

CN201557318U - Antistatic device at mobilephone loudspeaker

Info

Publication number: CN201557318U
Application number: CN2009202607136U
Authority: CN
Inventors: 苏海波
Original assignee: Huizhou TCL Mobile Communication Co Ltd
Current assignee: Huizhou TCL Mobile Communication Co Ltd
Priority date: 2009-11-20
Filing date: 2009-11-20
Publication date: 2010-08-18
Anticipated expiration: 2019-11-20

Abstract

The utility model discloses an antistatic device at mobilephone loudspeaker, which includes an antistatic ring arranged between a built-in loudspeaker unit and an external-playing loudspeaker orifice on a casing, wherein the antistatic ring includes an enclosed ring part and an extended part having one end connected with the enclosed ring part; the shape and the size of the ring part are matched with those of a loudspeaker mouth of the loudspeaker unit; and the other end of the extended part is electrically connected with a grounding part of a mobilephone main board and used for guiding static electricity entering through the external-playing loudspeaker orifice to the mainboard for discharging. Since the antistatic ring can be electrically connected with the grounding part of the mobilephone main board and arranged between the built-in loudspeaker unit and the loudspeaker orifice on the casing, static electricity entering through the external-playing loudspeaker orifice can be guided to the mainboard for discharging, and ESD (electro-static discharge) interference in internal circuits of the mobiblephone is effectively prevented; and the antistatic device is particularly suitable for use on the external loudspeaker orifice with windowing size becoming bigger and bigger.

Description

The anti-static device at a kind of mobile phone loudspeaker place

Technical field

The utility model relates to the protection circuit field of anti-electrostatic discharging in the mobile communication product, and in particular, what improvement related to is the anti-static device at a kind of mobile phone loudspeaker place.

Background technology

ESD (Electro-Static discharge) static discharge mainly shows two aspects to the harm of electronic equipment, the one, and produce signal and disturb, the 2nd, electronic hardware was lost efficacy.And mobile communication product is because the operating characteristic of carrying is born the highest product of ESD harassing and wrecking frequency so become basically in the conventional electrical product.

Generally, the terminal of mobile communication products such as mobile phone all has complete shell protection, and static can only import into by the external interface on slit, metal finishing circle and the terminal of its shell the influence of its internal electron circuit.

As shown in Figure 1, at present can enough big volume in order to guarantee that outer on the mobile phone puts that loudspeaker have, the outer bellmouth orifice of putting at the mobile phone back side is all designed the enough big size of windowing, thereby make and to put bellmouth orifice and become basically outward, also make static be easy to just outside this, put that bellmouth orifice enters and the mobile phone internal wiring is carried out esd discharge harass the place of mobile phone interior exposed in extraneous space maximum.

But mobile phone in the past begins not design the very big outer bellmouth orifice of putting of size of windowing, so this outer electrostatic hazard of putting the bellmouth orifice place seemed also very serious at that time; Just, described outer ESD protective treatment of putting the bellmouth orifice place is begun to be paid close attention to gradually and become one of problem demanding prompt solution in recent years along with the growing consumption demand of people and the development of 3G mobile.

Therefore, prior art still haves much room for improvement and develops.

The utility model content

The purpose of this utility model is, is to provide the anti-static device at a kind of mobile phone loudspeaker place, can prevent effectively that static from putting from mobile phone outer that bellmouth orifice enters and the mobile phone internal wiring is carried out the esd discharge harassing and wrecking.

The technical solution of the utility model is as follows:

The anti-static device at a kind of mobile phone loudspeaker place, wherein, described anti-static device comprises an antistatic ring, is arranged on outer the putting between the bellmouth orifice on built-in loudspeaker device and the shell; Described antistatic ring is made up of the extension that a ring portion of sealing and an end are connected with this ring portion; The horn mouth of the shape of described ring portion, size and described loudspeaker device is suitable; The other end of described extension is connected electrically in the ground connection place of described cell phone mainboard, is used for discharging to described mainboard put the electrostatic guide that bellmouth orifice enters outside described.

Described anti-static device, wherein, described antistatic ring is a sheet Copper Foil ring that sticks on the described loudspeaker device and be positioned at described horn mouth edge.

Described anti-static device, wherein, described antistatic ring is a sheet Copper Foil ring that sticks on the described outer casing inner wall and be positioned at described bellmouth orifice edge.

Described anti-static device, wherein, at least one surface of described antistatic ring is provided with mucigel.

The anti-static device at a kind of mobile phone loudspeaker provided by the utility model place, owing between the bellmouth orifice on built-in loudspeaker device and the shell, be provided with the antistatic ring that can be electrically connected to cell phone mainboard ground connection place, thereby directly will put the electrostatic guide that bellmouth orifice enters from mobile phone outer discharges to described mainboard, prevented from effectively to cause the esd discharge harassing and wrecking that the mobile phone internal wiring is carried out from this, the size design that especially is fit to window now gets the increasing outer bellmouth orifice of putting and uses.

Description of drawings

Fig. 1 is one outer certain the 3G mobile front view of putting bellmouth orifice of back side band in the utility model;

Fig. 2 is a front view of removing this cell phone rear cover among the utility model Fig. 1;

Fig. 3 is for only keeping the front view of PCB, built-in loudspeaker device and antistatic ring among the utility model Fig. 1.

Embodiment

Below with reference to accompanying drawing, device embodiment of the present utility model and embodiment are described in detail.

The anti-static device at a kind of mobile phone loudspeaker of the present utility model place, one of its embodiment as shown in Figure 1, is windowed at the mobile phone back side and to be put bellmouth orifice 110 outside larger-size; Take this cell phone rear cover 120 apart, as shown in Figure 2, in a loudspeaker device 230 is arranged, surrounded by a special-purpose loudspeaker operatic tunes spare 240, this loudspeaker device 230 is fixed on the mainboard 250 of mobile phone, and over against bellmouth orifice 121 positions of described bonnet 120; Also have an antistatic ring 260, be looped around described loudspeaker device 230 edges, the electrostatic guide that is used for entering from described bellmouth orifice 121 discharges to described mainboard 250; As shown in Figure 3, described antistatic ring 260 comprises the ring portion 361 and an extension 362 of a sealing, and the horn mouth of the shape of described ring portion 361, size and described loudspeaker device 230 is suitable; One end one of described extension 362 is connected the edge of described ring portion 361, and the other end is connected electrically in the ground connection place of this cell phone mainboard 250.

The outer bellmouth orifice of putting shown in the accompanying drawing 1, the shell that is positioned at the described mobile phone back side is on the bonnet 120, also can be positioned on the shell in mobile phone front; It is shaped as circle, also can be other shapes; Quantity is one, can certainly be designed to two or more.

Special-purpose loudspeaker operatic tunes spare 240 shown in the accompanying drawing 2 can also improve and strengthen the effect of outer sound reproduction sound, if do not design this part 240, also can secure the above loudspeaker device 230 by the bonding additive method that waits; Described loudspeaker device 230 ovalizes, and described antistatic ring 260 can be positioned at the horn mouth edge of this loudspeaker device 230, as described in sticking on the loudspeaker device 230; Perhaps, described antistatic ring 260 can be positioned at bellmouth orifice 121 edges of described phone housing, can stick on the described outer casing inner wall, but this kind mode will cause the extension 362 of described antistatic ring 260 longer.

Described antistatic ring 260 in the accompanying drawing 3 can be a sheet of Copper Foil ring, and its extension 362 can be welded on the ground pad place of described mainboard 250; By the good conduction of this Copper Foil, thereby make electrostatic energy on described mainboard 250, discharge with the form of heat; In addition, can also mucigel be set in the one side of described Copper Foil ring, the horn mouth edge that is used for described Copper Foil ring is bonded in described loudspeaker device 230 is fixed; And/or, at the another side of described Copper Foil ring mucigel being set also, bellmouth orifice 121 edges that are used for described Copper Foil ring is bonded in described phone housing inwall are fixed.

Test shows through on 3G mobile adopts this antistatic ring ESD protection effect good, and cost is lower, makes easily, and is easy for installation, is well suited for the requirement of mass production.

Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all belong to the protection range of the utility model claims.

Claims

1. the anti-static device at a mobile phone loudspeaker place is characterized in that, described anti-static device comprises an antistatic ring, is arranged on outer the putting between the bellmouth orifice on built-in loudspeaker device and the shell; Described antistatic ring is made up of the extension that a ring portion of sealing and an end are connected with this ring portion; The horn mouth of the shape of described ring portion, size and described loudspeaker device is suitable; The other end of described extension is connected electrically in the ground connection place of described cell phone mainboard, is used for discharging to described mainboard put the electrostatic guide that bellmouth orifice enters outside described.

2. anti-static device according to claim 1 is characterized in that, described antistatic ring is a sheet Copper Foil ring that sticks on the described loudspeaker device and be positioned at described horn mouth edge.

3. anti-static device according to claim 1 is characterized in that, described antistatic ring is a sheet Copper Foil ring that sticks on the described outer casing inner wall and be positioned at described bellmouth orifice edge.

4. according to claim 2 or 3 described anti-static devices, it is characterized in that at least one surface of described antistatic ring is provided with mucigel.