CN102035110A

CN102035110A - Audio jack with emi shielding

Info

Publication number: CN102035110A
Application number: CN2010105126597A
Authority: CN
Inventors: 卡斯滕·塔姆; 沃尔夫冈·埃德尔伦
Original assignee: Research in Motion Ltd
Current assignee: BlackBerry Ltd
Priority date: 2009-10-05
Filing date: 2010-10-08
Publication date: 2011-04-27
Anticipated expiration: 2030-10-08
Also published as: CN102035110B; CA2716093A1; CA2716093C; EP2309602B1; ATE544199T1; EP2309602A1

Abstract

An audio jack for an audio plug for use in an electrical device, comprising a non-conductive enclosure having a front side and defining a cavity having an aperture within the front side for receiving the audio plug, the aperture having a first diameter, the cavity extending along a longitudinal axis; a conductive shielding formed from sheet metal folded over at least five sides of the enclosure including the front side, the shielding defining a shielding aperture centered on the enclosure aperture and having a second diameter larger than the first diameter; and a ground contact connected to the conductive shielding.

Description

Audio sockets with EMI screening arrangement

Technical field

The application relates to the electromagnetic screen that is used for electronic installation.More specifically, the application discloses and a kind ofly has been used to shield audio sockets to prevent the equipment of electromagnetic interference and static discharge.

Background technology

Electronic installation has the electric input and output that are carried on the cable usually, and described cable can be connected to this device by connector.The signal of telecommunication that flows through these connectors is easy to and other operation of installing or disturb (EMI) and static discharges with other operation mutual electromagnetic from the outside of this device.EMI effect from cable and the connector that is connected to integrated circuit may be apparent in view, and may disturb with radio communication and audio frequency apparatus.Therefore, the producer with integrated circuit (IC) apparatus of attachable cable need reduce the EMI effect of the electric connector in the electronic installation that comprises integrated circuit.

Description of drawings

Fig. 1 is the perspective view of exemplary embodiment with audio sockets of EMI screening arrangement;

Fig. 2 illustrates the perspective view of two different azimuth of two exemplary embodiments that Fig. 1 is shown;

Fig. 3 is mounted in the perspective view of the exemplary embodiment of the Fig. 1 on the printed circuit board (PCB) of exemplary electronic installation;

Fig. 4 is the partial sectional view with exemplary electronic device of the exemplary embodiment that is installed in Fig. 1 wherein;

Fig. 5 is the cutaway view of exemplary embodiment that is installed in the exemplary electronic installation and has Fig. 1 of insertion exemplary socket wherein, and this section is by the vertical plane intercepting along the longitudinal axis in audio sockets chamber.

Summary of the invention

In first aspect, the application relates to a kind of audio sockets that is used for being used in the audio jack of electronic installation, comprise the nonconducting shell that has leading flank and limit the chamber, described chamber has the hole that is used to receive audio jack that is arranged in leading flank, this hole has first diameter, and extend in this chamber longitudinally axis; By the conductive shield device that the sheet metal that bends at least five sides that comprise leading flank of shell forms, the hole that screening arrangement limits with shell is the screening arrangement hole at center, and the screening arrangement hole has second diameter greater than first diameter; Be connected to the earthing contact of the screening arrangement of conduction.

Audio sockets also comprises the nonconducting stopper element that extends from the surface of shell, the longitudinal axis that nonconducting stopper element is substantially perpendicular to the chamber extends, and be suitable in abutting connection with complementary surface, any power with audio sockets upper edge longitudinal axis is passed to complementary surface thus.Further, earthing contact is connected to the conductive shield device near the screening arrangement hole.

Further, earthing contact comprises resilient contact.

Further, the application relates to contact, one or more chamber, and the contact, chamber is arranged in the chamber, to be connected with the surface electrical of one or more conductions of the audio jack that is inserted into.

Further, the application relates to one or more PCB resilient contacts that are suitable for being connected to lead and are electrically connected with lead.

Further, the application relates to one or more be suitable for the being connected to lead of printed circuit board (PCB) and the PCB resilient contacts that are electrically connected with the lead of printed circuit board (PCB), and each PCB resilient contact is electrically connected with contact, one or more chamber.

Further, the application relates to a kind of electronic installation that audio sockets is housed, and comprises nonconducting casing of rigidity, and box body hole that its hole that limits with shell is the center and box body hole have the diameter less than second diameter.

Further, the diameter of box body hole is identical with first diameter basically.

Further, the application relates to a kind of electronic installation that audio sockets is housed, and comprises nonconducting casing of rigidity, and its hole that limits with shell is the hole at center and has diameter less than second diameter; Audio subsystem with left boombox signal output part, right boombox signal output part and microphone signal input; Have the left boombox lead that is connected with the left boombox signal output part of audio subsystem, the printed circuit board (PCB) of right boombox lead that is connected with the right boombox signal output part of audio subsystem and the microphone conductor that is connected with the microphone signal input of audio subsystem, left side boombox lead, right boombox lead, microphone conductor are positioned as when audio sockets is installed on the printed circuit board (PCB), and each all contacts with one or more PCB contact of audio sockets.

Further, the contact, chamber of audio sockets comprises and the contact, microphone chamber that is positioned as the PCB contact connection that is connected with the microphone conductor of printed circuit board (PCB); With the right speaker chambers contact that is positioned as the PCB contact connection that is connected with the right speaker wire of printed circuit board (PCB); With be positioned as the contact, left speaker chamber that the PCB contact that is connected with the left speaker lead of printed circuit board (PCB) connects.

Further, the application relates to a kind of system earth device; Printed circuit board (PCB) also comprises and is connected with the system earth device and is positioned as the system earth lead that is connected with one or more PCB contact of audio sockets; The contact, chamber also comprises and the contact, system earth chamber that is positioned as the PCB contact connection that is connected with the system earth lead of printed circuit board (PCB).

Further, contact, microphone chamber, contact, system earth chamber, right speaker chambers contact and contact, left speaker chamber are arranged to the end in chamber in turn from the hole of shell.

Further, the application relates to a kind of electronic installation that audio sockets is housed, and comprises nonconducting casing of rigidity, and box body hole that its hole that limits with shell is the center and box body hole have the diameter less than second diameter; Be positioned as in abutting connection with nonconducting member and stop surfaces complementary with nonconducting stopper element (208) and that absorb any power of audio sockets upper edge longitudinal axis.

Embodiment

The application has described a kind of audio sockets with screening arrangement of opposing electromagnetic interference (EMI).

Fig. 1 and 2 illustrates the exemplary embodiment of the audio sockets with EMI screening arrangement.In this embodiment, socket comprises two tangible pieces: the conductive shield device 100 that encapsulates nonconducting shell 200 basically.

Shell 200 is formed by the non electrically conductive material of for example duroplasts.In this embodiment, shell 200 is formed by single piece of plastic.It is the prism with substantial rectangular of angled front surface.Shell 200 limits the chamber 202 that is shaped as the hollow of holding electric connector (audio jack of TRS (" tip-ring-sleeve ") or TRRS (" tip-ring-ring-sleeve ") kind just).The shape in chamber 202 basically with the shape complementarity of audio jack, and the front surface limiting hole 204 of shell 200, plug can be along the chamber 202 longitudinal axis 230 insert chamber 202 by this hole.The elliptical shape in this hole 204 is set to along the chamber 202 longitudinal axis 230 and observes, and it provides and the complete corresponding circular contour of the diameter of corresponding audio jack.

In chamber 202, one or more electric contacts are designed to be electrically connected with corresponding contact on the plug that is inserted into; Top contact in these contacts is shown as contact, first chamber 210 in Fig. 2.These contacts, chamber extend in the resilient contact on the surface that is suitable for being connected to the printed circuit board (PCB) (PCB) that socket is installed in device wherein.In this embodiment, five such resilient contacts are illustrated, and comprise a PCB resilient contact 218, the 2nd PCB resilient contact 220, the 3rd PCB resilient contact 222, the 4th PCB resilient contact 224 and the 5th PCB resilient contact 226.In these resilient contacts each can be the extension of contact, one or more chamber, and for example extension of contact, first chamber 210, and single chamber contact can extend to more than in the resilient contact.Selectively, one or more such resilient contacts can be the extensions of the electric parts in the shell 200, rather than the extension in one of the contact, chamber.

Screening arrangement 100 is formed by electric conducting material, for example copper, gold or other metals, and it works to stop EMI.Screening arrangement 100 has five surfaces of five sides of package casing 200 basically.Here specify with reference to their common orientation in Fig. 1 on these surfaces: basal surface 102, rear surface 104, front surface 106, left surface 108 and right surface 110.The top of shell 200 (orientation of Fig. 1 provides) exposes at least in part, and it illustrates the non electrically conductive material that forms shell 200.Screening arrangement 100 is formed by single sheet of conductive material in this embodiment, and it is stamped into specific shape, is bent and press pleat to form final shape then.The slotted eye 114 that the front surface 106 of screening arrangement 100 limits greater than the diameter of corresponding audio jack.This elliptical shape is less times greater than the shape in the hole 204 of shell, stays little gap between the circumference in the hole 204 of the inside circumference in screening arrangement hole 114 and shell, prevents that thus the plug and the screening arrangement 100 that are inserted into from electrically contacting.Be understandable that though chamber 202 is columniform basically,

hole

204 and 114 is owing to angled front surface 106 presents ellipse.

The basal surface 102 of screening arrangement 100 limits the mechanical stop pin 208 of shell 200 by its opening that stretches out.The front surface 106 of screening arrangement 100 partly is fixed to shell 200 by clip 116, extends around the turning of this clip between the preceding and top surface of shell 200.

Screening arrangement 100 additionally is included in the ground connection resilient contact 112 that extends from screening arrangement 100 near the position in the front surface 106 of screening arrangement 100 and screening arrangement hole 114.Ground connection resilient contact 112 is suitable for being connected to the ground plane that socket is mounted the PCB on it, makes screening arrangement 100 be grounded to system earth device in cryopreservation device thus.112106114：114204100100112。 In addition, single ground connection resilient contact 112 replaces the use of a plurality of such contacts to reduce the ground loop in the screening arrangement 100 and the risk of other undesirable electric product.

Fig. 3 illustrates the exemplary embodiment of the audio sockets on the PCB that is installed in exemplary electronic installation 302 among Fig. 1 and 2.Ground connection resilient contact 112 is shown as with the ground plane of PCB 302 and contacts, and a plurality of PCB resilient contact 218,220,222,224 also is connected with a plurality of leads of PCB 302 with 226 (invisible).Here, the basal surface 102 of screening arrangement 100 is visible, and the mechanical stop pin 208 of shell 200 protrudes upward.Contact, second chamber 212 here is visible, deeper is arranged in the chamber than contact, first chamber 210.

Fig. 4 illustrates the exemplary audio socket in the exemplary electronic installation of being installed in of Fig. 1-3 300, and it has the parts than the device 300 that more is arranged in suitable position among Fig. 3.Here, the part of the external box of microvave 306 of device is shown as the front surface 106 that covers screening arrangement 100 and limits and has the box body hole 308 of observing the section profile identical with the hole 204 of shell along the longitudinal axis 230 of outer shell cavity 202.Coupling between the hole 204 of box body hole 308 and shell guarantees that the plug that is inserted into can not contact with screening arrangement 100, and screening arrangement has on circumference both holes 114 greater than other.Therefore, only electrical connection will be the result of the spark of emitting of the gap location between the edge in plug surface and screening arrangement hole 114 between plug that is inserted into and the screening arrangement 100.

Fig. 5 is illustrated in the profile of outer shell cavity 202 of exemplary audio socket of situation figure below 1-4 of exemplary electronic installation 300.Socket is shown as its basal surface 102 here towards following, and the PCB 302 of device 300 is positioned on the top surface of shell 200.The 4th PCB resilient contact 224 is shown as with PCB 302 and contacts.The clip 116 that the front surface 106 of screening arrangement 100 is remained to shell 200 is shown in the turning bent around of shell 200.Consistency between the size of the gap between the hole 204 of screening arrangement hole 114 and shell and the hole 204 of shell and box body hole 308 also presents in this view.A plurality of parts of casing 306 packaging systems 300 of the device that forms by the non electrically conductive material of for example duroplasts.

Exemplary audio jack 400 also here is shown as inserts outer shell cavity 202.Audio jack 400 is TRRS types, its have by shading ring separate elongated cylindrical, to form four independent contacts (tip, ring, ring and sleeve).The contact of the base portion 418 of the most close plug 400 is plug sleeve contacts 410.This separates from second plug contacts 408 of conducting ring shape by first shading ring 416, second plug contacts 408 again by second shading ring 414 from also be that the 3rd plug contacts 406 of annular is separated, the 3rd plug contacts 406 is finally by plug tip contact 404 separation of the 3rd shading ring 412 from the end 402 that is positioned at plug 400.In the exemplary embodiment of the audio sockets of Miao Shuing, when plug 400 was inserted in the chamber 202 fully, plug sleeve contact 410 was electrically connected with contact, first chamber 210, and second plug contacts 408 is electrically connected with contact, second chamber 212 in the above.The 3rd plug contacts 406 and plug tip contact 404 also are electrically connected with contact, the 3rd chamber and end chamber contact (not shown) respectively.

To be audio sockets remain on mechanism in the suitable position in the housing of device 300 by it to the further feature of the audio sockets shown in Fig. 5.Shell 200 has the mechanical stop pin 208 that stretches out by the opening in the basal surface 102 of screening arrangement 100, with socket fixing in position in, and stop the longitudinal force of the plug 400 that inserts from 202 longitudinal axis 230 along the chamber.This latch 208 concurs with the rear end, inclined-plane 206 that has with the chamber 202 of the shape of most advanced and sophisticated 402 complementations of plug.When the tip 402 of plug 400 contacts with the rear end 206 in chamber 202, absorbed by the fixing latch 208 in position of the complementary stop surfaces by device 300 304 along any further insertion force of the longitudinal axis 230 in chamber 202.

This stop mechanism has dual purpose.At first, it prevents that any power is passed to the rear surface 310 that socket is positioned at device case wherein.This is for preventing that infringement or wearing and tearing near the parts the rear surface 310 that is positioned at housing from may be important.Especially, rear surface 310 can be the integral part of another parts of the device 300 that quilt is degenerated owing to the contact force that repeats.For example, these parts can be housing packing rings or may be because other the potted component that the impact force of repetition be removed or damage.The second, stop mechanism allows to keep little gap between the base portion 418 of the outer surface of device box 306 and plug 400.In this exemplary embodiment, plug 400 has the base portion 418 of being wider than its sleeve; Be not positioned at stop mechanism under the situation of suitable position, plug may be inserted into the degree that make that the base portion 418 of plug 400 directly contacts with device box 306.This may and/or install at plug 400 has deleterious effects on 300, still, stay the infringement that little gap can produce tolerance and prevent to produce owing to the contact between these two surfaces between them.

Many audio connectors comprise the nonconducting stretcher that surrounds plug hole and extend to the outside of device box.The exemplary embodiment of above-described audio sockets and the difference of this design are there is not stretcher, and except the inside in chamber 202, and not having other socket part is visible from installing 300 outside.This be box body hole 308 circumference basically with the result of the circumference coupling in the hole 204 of shell, do not stay the gap of the insertion that is used for stretcher.On the contrary, the thickness of device box 300 is realized basically and nonconducting stretcher identical functions, and is made whole audio sockets assembly have the length shorter than typical extension audio sockets.

In certain embodiments, different plug contacts can be carried a plurality of audio signals, comprises loudspeaker signal and microphone signal.For example, plug tip contact 404 can receive the left boombox signal that transmits from the chamber terminal contacts, and this signal is from the PCB resilient contact again, and for example the 4th PCB resilient contact 224 transmits.On the PCB 302 that the 4th PCB resilient contact 224 in such embodiments will be installed in left boombox lead on the PCB 302 is connected, receive left boombox signal from installing 300 audio subsystem thus.Based on same reason, the 3rd plug contacts 406 can be carried right boombox signal, and this signal can transmit by contact, the 3rd chamber with from the 3rd PCB resilient contact 222 of the right boombox lead on the PCB 302.Second plug contacts 408 in such embodiments can play earthing contact, plug 400 is connected to the system earth device by contact, second chamber 212 and the 2nd PCB resilient contact 220 or is used for the independent audio frequency earthing device of device 300.Plug sleeve contact 410 can be carried microphone signal and is sent to a PCB resilient contact 218 by contact, first chamber 210, and therefore is sent to the microphone signal lead on the PCB 302, thereby is provided in the audio subsystem of device 300.In such embodiments, some additional purpose also can be played in contact, first chamber 210, for example is connected by the electrostatic discharge (ESD) protection parts with device 300 to prevent static discharge.Optionally, the effect of contact, a plurality of chamber and PCB resilient contact can rearrange according to the rule of using in device 300 and plug 400.

In certain embodiments, the contact, chamber can be placed as and prevent when plug 400 is fully inserted into, and plug sleeve contact 410 is electrically connected with contact, any chamber.Contact, first chamber 210 can be electrically connected with second plug contacts 408 rather than plug sleeve contact 410, and correspondingly, other contact, chamber also can be electrically connected with different plug contacts.

Some embodiment can use a PCB resilient contact to transmit non-audio signals, the signal of for example indicating plug to be inserted into.Optionally, one or more PCB resilient contacts can be used to be connected to the additional electric parts of PCB, for example electrostatic discharging element with plug ground connection and/or with one or more contacts of plug sleeve.In certain embodiments, one or more PCB resilient contacts can integrally form with screening arrangement 100, perhaps can be electrically connected, adopt the ground connection resilient contact 112 of screening arrangement 100 to make any element ground connection that is connected with the PCB resilient contact thus with screening arrangement 100.Will be further appreciated that a plurality of resilient contacts, comprise that ground connection resilient contact 112 can take different forms in other embodiments, for example be suitable for being soldered to the pin of printed circuit board (PCB).

In an alternative embodiment, socket is not an audio sockets, but is used for the screening can of the electric connector of the one or more simulations of carrying of some other type and/or digital signal.

In further alternative embodiment, mechanical stop pin 208 can have the shape different with pin, and can contact with the complementary structure of device 300, so that socket is fixing in position.Other stopping element that different embodiment can have mechanical stop pin 208 or stretch out from the different surfaces of audio sockets.In certain embodiments, stopping element can be formed by the independent piece of the material of shell.

The a plurality of embodiment that propose above only are examples, and do not mean that the restriction scope of disclosure.The variation of invention described herein is that conspicuous, such variation is in the scope of the application's expection for a person skilled in the art.Especially, the feature of above-described one or more embodiment can be selected as producing the alternative embodiment by branch combination (sub-combination) formation of the feature of clearly not describing in the above.In addition, the feature of above-described one or more embodiment can be selected and combination to produce the alternative embodiment that constitutes by the combination of features of clearly not describing in the above.When the application was looked back as a whole, being suitable for such combination and dividing the feature of combination (sub-combination) was very conspicuous for a person skilled in the art.Themes described herein and in claims of being quoted are attempted to cover and are comprised technical all suitable changes.

Claims

1. audio sockets that is used for being used in the audio jack of electronic installation comprises:

Have leading flank and limit nonconducting shell (200) in chamber (202), described chamber has the hole that is used to receive audio jack (204) that is arranged in leading flank, and this hole (204) have first diameter, and extend this chamber (202) longitudinally axis (230);

The conductive shield device (100) that forms by the sheet metal that at least five sides that comprise leading flank of shell (200), bends, the hole (204) that described conductive shield device (100) limits with shell is the screening arrangement hole (114) at center, and screening arrangement hole (114) have second diameter greater than first diameter; With

Be connected to the earthing contact (122) of described conductive shield device; With

The nonconducting stopper element (208) that extends from the surface of described shell (200), the longitudinal axis (230) that described nonconducting stopper element (208) is substantially perpendicular to described chamber (202) extends, and be suitable for thus any power of audio sockets upper edge longitudinal axis (230) being passed to the surface (304) of described complementation in abutting connection with complementary surface (304).

2. audio sockets as claimed in claim 1, wherein, described earthing contact (112) is connected to conductive shield device (100) near screening arrangement hole (114).

3. audio sockets as claimed in claim 2, wherein, described earthing contact (112) comprises resilient contact.

4. audio sockets as claimed in claim 1 also comprises contact, one or more chamber (210,212), and contact, chamber (210,212) are arranged in the chamber, to be connected with the surface electrical of one or more conductions of the audio jack that is inserted into.

5. audio sockets as claimed in claim 4 also comprises one or more be suitable for the being connected to lead of printed circuit board (PCB) and the PCB contacts (218,220 that are electrically connected with the lead of printed circuit board (PCB), 222,224,226), each PCB contact is electrically connected with contact, one or more chamber.

6. electronic installation (300) that audio sockets as claimed in claim 1 is housed comprises nonconducting casing (306) of rigidity, and box body hole (308) that its hole that limits with shell is the center and box body hole (308) have the diameter less than second diameter.

7. device as claimed in claim 6, wherein, the diameter of box body hole (308) is identical with first diameter basically.

8. electronic installation as claimed in claim 5 (300) also comprises:

Audio subsystem with left boombox signal output part, right boombox signal output part, microphone signal input and audio frequency earthing device; With

Printed circuit board (PCB) with the left boombox lead that is connected with the left boombox signal output part of audio subsystem, the right boombox lead that is connected with the right boombox signal output part of audio subsystem, the microphone conductor that is connected with the microphone signal input of audio subsystem and the audio frequency earth lead that is connected with the audio frequency earthing device

Left side boombox lead, right boombox lead, microphone conductor and audio frequency earth lead are positioned as when audio sockets is installed on the printed circuit board (PCB), each all with the PCB contact of audio sockets in one or more the contact.

9. electronic installation as claimed in claim 8, wherein, the contact, chamber of audio sockets comprises:

With the contact, microphone chamber that is positioned as the PCB contact connection that is connected with the microphone conductor of printed circuit board (PCB) (302);

With the right speaker chambers contact that is positioned as the PCB contact connection that is connected with the right speaker wire of printed circuit board (PCB) (302);

With the contact, left speaker chamber that is positioned as the PCB contact connection that is connected with the left speaker lead of printed circuit board (PCB) (302); With

With the audio frequency grounded chamber contact that is positioned as the PCB contact connection that is connected with the audio frequency earth lead of printed circuit board (PCB) (302).

10. electronic installation as claimed in claim 9, wherein, contact, microphone chamber, audio frequency grounded chamber contact, right speaker chambers contact and contact, left speaker chamber from the hole (114) of shell to the chamber end of (202) arrange in turn.

11. the electronic installation (300) that audio sockets as claimed in claim 1 is housed comprising:

Nonconducting casing (306) of rigidity, box body hole (308) that its hole (114) that limits with shell is the center and box body hole (308) have the diameter less than second diameter; With

Be positioned as in abutting connection with nonconducting stopper element (208) and stop surfaces (304) complementary with nonconducting stopper element (208) and that absorb any power of audio sockets upper edge longitudinal axis (230).