CN1355985A

CN1355985A - Switching mat for mobile terminal

Info

Publication number: CN1355985A
Application number: CN 00808928
Authority: CN
Inventors: R·波尔特拉
Original assignee: Telefonaktiebolaget LM Ericsson AB
Current assignee: Telefonaktiebolaget LM Ericsson AB
Priority date: 1999-06-14
Filing date: 2000-05-10
Publication date: 2002-06-26
Anticipated expiration: 2020-05-10
Also published as: WO2000078015A1; AU4793800A; DE10084690T1; CN1145337C; SE9902224D0; SE9902224L; JP2003502917A

Abstract

A switching mat (9) for a mobile terminal device, especially a mobile telephone, comprises a keypad (10), a microphone holder (12), and a loudspeaker holder (14). The microphone holder (12) and/or the loudspeaker holder (14) is connected to the keypad (10) by means of a flexible element, such as a strip (13, 15), integrated in the switching mat (9).

Description

The switching mat of mobile terminal device

Technical field

The present invention relates to be used for the mobile terminal device and the switching mat of mobile phone preferably, this switching mat comprises a key pad and at least one element bearing such as microphone bearing and loud speaker bearing.

Background of invention

Early existing people has proposed will be installed to usually the lid of mobile phone outer casing and the switching mat of the above-mentioned type between the bottom.US-A-5717753 has proposed a good example, and wherein, a free-revving engine of such switching mat allegedly will be raised the efficiency and competitiveness exactly.

In independent installation step, microphone and loud speaker are embedded in its bearing separately, and the inside dimension of these bearings is preferably identical closely with the outside dimension of microphone and loud speaker respectively, thereby has realized tight contact.The further advantage of this design is, makes admirably to insert its be not hit influence of vibration of element in bearing separately.

But, when assembling switching mat and element thereof, may run into some troubles.Especially, because element location is very important and must set up microphone and loud speaker (printed circuit board (PCB), correct contact PCB) is so the element bearing that constitutes switching mat with key pad is unfavorable with following card etc. respectively with being integral.

The invention scheme

According to the present invention, so obtained a relevant with it better solution, promptly at least one element bearing such as microphone bearing and/or loud speaker bearing link to each other with key pad or another element bearing by a flexible member such as a bar that is integrated in the switching mat.

In automation process, also can be like a cork on equipped in the shell of the mobile phone of PCB etc. assembling add the switching mat of the present invention of said elements, thereby on element and PCB, set up suitable contact separately between the contact.

Brief description

Below, further specifying the present invention with reference to accompanying drawing, these accompanying drawings show a preferred embodiment of the present invention, wherein:

Fig. 1 is the front view of mobile phone;

Fig. 2 is the cross section sketch along the line II-II of Fig. 1, has wherein omitted and understands the part that the present invention has nothing to do;

Fig. 3 is the birds-eye perspective that is used for the switching mat of mobile phone shown in Fig. 1,2;

Fig. 4 is the amplification inclinating view of Fig. 3 part.

Specifying of preferred embodiment

Fig. 1 shows mobile phone.It according to traditional approach ground in shell 1, have microphone 2, some be used to control telephony feature key 3, show display 4, loud speaker 5 and the antenna 6 of phone information.

Shown in Fig. 2 signal, shell 1 is made of bottom 7 and lid 8.The battery that bottom 7 can be equipped with the required electronic component of telephony feature and be powered to phone.The lid 8 that links to each other with bottom 7 offers and is applicable to key 3, display 4 (it has transparency window at this) and the opening that transmits the transaudient road of sound respectively with microphone 2 and loud speaker 5 contacts.

In shell 1, between its bottom 7 and lid 8, be provided with a switching mat 9.As shown in Figure 3, switching mat 9 therein heart portion constitute by the key pad 10 of band key 3 and all-in-one-piece display frame 11.Preferably can so make switching mat 9 by the injection molded of suitable material such as silicon rubber, can be so that each key 3 caves in so that the switching device on the printed circuit board (PCB) (PCB) of contact below for example being arranged on according to traditional approach.Switching mat 9 materials can have certain elasticity, thereby when released, key 3 returns its reset condition.

One on the end of key pad and is preferably becoming one with key pad 10 on that end opposite with display frame 11 with the microphone bearing 12 that links to each other with key pad 10 by soft 13.Microphone bearing 12 is given with certain pliability in bar 13 relative key pad 10 ground, and this pliability is favourable when microphone is installed for example.

On its other end, be in this case on display frame 11, key pad 10 is equipped with one for the purpose identical with microphone bearing bar 13 and by soft 15 loud speaker bearing 14 that links to each other with display frame 11.

In this case, a buzzer bearing 16 forms one with loud speaker bearing 14.Perhaps, if really be provided with buzzer, then buzzer seat 16 can be directly links to each other with key pad 10 by soft of an independent and all-in-one-piece.

Fig. 4 is the amplification inclinating view of Fig. 3 part.Can be clear that the specific design mode of loud speaker bearing bar 15 here.Material thickness in switching mat 9 planes looks that to allowing bending be appropriate.On the other hand, bar 15 has the certain width that is used to produce desirable strength, but it is provided with gravure as shown in figure and has lateral bending to allow it.

The design of microphone bearing bar 13 can be similar.

In addition, can in Fig. 4, see the bottom side of LCD frame 11.Usually, key pad and LCD frame or dust washer are parts independently, but here; they are integrated into one; promptly form switching mat, the excessive forces that causes cracking in order to ensure meeting is not passed to the LCD on below the PCB when assembling, and the bottom side of LCD frame 11 is equipped with the fin 17 that can be flattened.

When the assembling mobile phone, switching mat 9 as shown in Figure 3 can be equipped with microphone separately and be equipped with upper speaker and be equipped with buzzer in loud speaker bearing 14 in buzzer bearing 16 in microphone bearing 5.Subsequently, switching mat 9 and add piece installing and integrally be installed on the PCB that is arranged in shell 1 bottom 7 as one.Because bar the 13, the 15th, soft, so be easy to make microphone, loud speaker and buzzer to be on the tram and correctly be connected with contact separately on the PCB.

Claims

1, a kind of switching mat that is used for mobile terminal device, described switching mat (9) comprises a key pad (10), at least one element bearing (12,14) as a microphone bearing (12) and a loud speaker bearing (14), it is characterized in that, described at least one element bearing (12,14) link to each other with key pad (10) or another element bearing by a flexible member such as a bar (13,15) that is integrated in the switching mat (9) as microphone bearing (12) and/or loud speaker bearing (14).

2, switching mat as claimed in claim 1 is characterized in that, a buzzer bearing (16) links to each other with loud speaker bearing (14).

3, switching mat as claimed in claim 1 is characterized in that, a display frame (11) is integrated into one with key pad (10).

4, switching mat as claimed in claim 3 is characterized in that, display frame (11) is equipped with fin (17) on its bottom surface.

5, the described switching mat of one of claim as described above is characterized in that switching mat (9) is made by silicon rubber.

6, switching mat as claimed in claim 1 is characterized in that, mobile terminal device is mobile phone or mobile call device.

7, a kind of mobile terminal device that is equipped with as switching mat (9) as described in one of claim 1-6.

8, a kind of assembly method that is equipped with the mobile terminal device of a switching mat (9), described switching mat comprises a key pad (10), at least one element bearing (12,14) as a microphone bearing (12) and a loud speaker bearing (14), it is characterized in that, so give each element bearing (12,14) equipped its element (2 separately of going up, 5), promptly give microphone bearing (12) an equipped last microphone (2), give loud speaker bearing (14) an equipped last loud speaker (5), subsequently, so add the switching mat (9) of loading onto element and be installed in the mobile terminal device, be that bar (13,15) has been realized required installation pliability.