CN1282088A - Push-button pad assembly for mobile communication device - Google Patents
Push-button pad assembly for mobile communication device Download PDFInfo
- Publication number
- CN1282088A CN1282088A CN00109896A CN00109896A CN1282088A CN 1282088 A CN1282088 A CN 1282088A CN 00109896 A CN00109896 A CN 00109896A CN 00109896 A CN00109896 A CN 00109896A CN 1282088 A CN1282088 A CN 1282088A
- Authority
- CN
- China
- Prior art keywords
- push
- pad assembly
- air
- button pad
- thin slice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2213/00—Venting
- H01H2213/002—Venting with external pressure
Landscapes
- Push-Button Switches (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
A key pad assembly for a mobile communication apparatus is disclosed. This assembly comprises a printed circuit board 10 provided with contact patterns, a first sheet 30 on which a plurality of contact means 20 are arranged and a second sheet 40 having openings for the contact means 20 and arranged between the first sheet and the board. The second sheet 40 has at least one air ventilating means 50 formed to ventilate air for elastic operation of the contact means 20. Therefor, it is possible to prevent a foreign substance such as dust from attaching to the key pad assembly, so as to prevent a wrong operation of a connector and to previously preserve the gold-plated contact patterns from decay.
Description
The present invention relates to a kind of push-button pad assembly, for example be used for mobile phone etc. and be furnished with the mobile communications device of dial key or function key.More specifically, the present invention relates to a kind of push-button pad assembly that is used for mobile communications device, prevent will be for example foreign matter such as moisture and dust be drawn between the contact pattern of the contact plate of push-button pad assembly and circuit board, thereby prevent that push-button pad assembly from breaking down and contact pattern is corroded.
Usually, in mobile communications devices such as for example mobile phone, a plurality of dial keies or function key are installed, so that the user can communicate.These buttons trigger the contact plate of printed circuit board (PCB) push-button pad assembly, and contact plate are electrically connected on the contact pattern of contact plate, so that the user can finish desired operation.
Fig. 1 and 2 represents the push-button pad assembly of the conventional mobile phone relevant with above-mentioned technology.As illustrated in fig. 1 and 2, this push-button pad assembly comprises: a printed circuit board (PCB) 110, be installed in the mobile phone shell (not illustrating among the figure), and be formed with a plurality of contact patterns 112 on this printed circuit board (PCB); An auxiliary sheet 130, a plurality of contact plates 120 are installed in its lower section, by the effect of pressing keys (not illustrating among the figure), contact with a plurality of contact patterns 112 and to produce the signal of telecommunication; With one insert thin slice 140, touch with the bottom connection of auxiliary sheet 130; A fixed part 142 is complementary with contact plate 120.Circuit board 110 has a plurality of air vent holes 150, is used for the ventilation between circuit board 110 and the contact plate 120, makes the elasticity triggering of contact plate 120 become mild.
Therefore, in the push-button pad assembly 100 of above-mentioned routine, a plurality of contact patterns 112 are printed on the circuit board 110 of communicator, then contact plate 120 are placed on the circuit board 110.Therefore,, flexiblely press contact plate 120, send the signal of telecommunication thereby it is contacted with contact pattern 112 if user key-press uses mobile phone.On the other hand, if discharge the pressure be applied on the contact plate 120, then contact plate 120 is owing to elasticity reverts to initial position, the result, and contact plate 120 leaves contact pattern 112.
Under this condition, contact plate 120 is arches, and finishes vertical resilient movement during pushing.Particularly, air vent hole 150 sucks and air-out between contact plate 120 and circuit board 110 back and forth repeatedly.In this mode, it is mild that the resilient movement of contact plate 120 will become.
Therefore, if there is not air vent hole 150, it is impossible that the ventilation of air just becomes, and therefore hinder the resilient movement of contact plate 120.
Yet in above-mentioned conventional push-button pad assembly 100, as illustrated in fig. 1 and 2, air vent hole 150 passes circuit board 110 in vertical direction, with contact plate 120 to push direction P identical.Therefore, in the process that triggers contact plate 120, have foreign matter easily in the air that sucks back and forth in the space between contact plate 120 and discharge, for example be drawn into the dust between circuit board 110 and the contact plate 120.
That is to say, moisture and the foreign matter that is had in the air is drawn in the contact plate 120.The foreign matter that is sucked accumulates between contact plate 120 and the contact pattern 112 like this, and the elasticity that hinders contact plate 120 triggers, thereby causes the contact failure.Therefore in addition, the foreign matter that is sucked makes Gold plated Layer be corroded, and makes the contact of contact plate 120 become unstable, and the result has reduced the product reliability of mobile phone.Particularly,, can make the printed circuit pattern short circuit of circuit board, and prolong the manufacturing cycle by forming a plurality of air vent holes 150.
The objective of the invention is to overcome the shortcoming of above-mentioned prior art.
Therefore, one object of the present invention is, a kind of push-button pad assembly that is used for mobile communications device is provided, prevent that foreign matter (for example moisture and dust) is drawn between the contact pattern of the contact plate of push-button pad assembly and circuit board, thereby prevent that push-button pad assembly from breaking down and contact pattern is corroded.
Another object of the present invention is, a kind of push-button pad assembly that is used for mobile communications device is provided, wherein vent device is not formed on the circuit board, but be formed in the insertion thin slice with simple form, make the production and the installation of push-button pad assembly become simple, even when when device being diminished ingeniously revise the design of communicator, the formation of air vent hole also will be easy, and element has good compatibility.
For achieving the above object, the push-button pad assembly that is used for mobile communications device according to the present invention comprises: a printed circuit board (PCB), be formed with contact pattern on it, and circuit board is installed in device inside; One first thin slice is furnished with a plurality of contact devices on it, be used for contacting with the contact pattern of circuit board; One second thin slice between first thin slice and circuit board, makes the contact pattern insulation of contact device and circuit board to have fixed thereon contact device; With at least one or a plurality of vent device, be formed on second thin slice, be used for sucking and air-out, so that the effect of pushing of the elasticity of contact device is mild.
With reference to accompanying drawing the preferred embodiments of the present invention are described in detail, will make above-mentioned purpose of the present invention and other advantages become more obvious, wherein:
Fig. 1 is the schematic diagram that is used for the conventional push-button pad assembly of mobile communications device;
Fig. 2 is the profile of conventional keys pad assembly;
Fig. 3 is the schematic diagram that is used for the push-button pad assembly of mobile communications device according to of the present invention;
Fig. 4 is the schematic diagram of expression according to the critical component of venting channels in the push-button pad assembly that is used for mobile communications device of the present invention; With
Fig. 5 is the profile according to push-button pad assembly of the present invention.
Describe the present invention with reference to the accompanying drawings.
Fig. 3 is according to of the present invention, is used for the schematic diagram of the push-button pad assembly of mobile communications device.Fig. 4 is according to of the present invention, is used for the schematic diagram of the critical component of venting channels in the push-button pad assembly of mobile communications device.Fig. 5 is the profile according to push-button pad assembly of the present invention.Push-button pad assembly 1 according to the present invention comprises: the printed circuit board (PCB) 10 that is installed in communicator inside; First and second thin slices 30 and 40; With air-breather 50.
Printed circuit board (PCB) 10 is installed in the inside of communicator, forms a plurality of contact patterns 12 according to the quantity of button (not illustrating among the figure) on this circuit board.Each contact pattern 12 is made up of two annulus 12a and 12b, the mutual electric insulation of two annulus, and can be electrically connected by face contact device 20.
A plurality of contact devices 20 are set, so that contact with the contact pattern 12 of circuit board 10 on first thin slice 30.First thin slice 30 is formed by the vinyl that scribbles cohesive material on it (vinyl) thin slice.And bonding second thin slice 40 of first thin slice 30 is arranged between first thin slice 30 and the circuit board 10.Second thin slice 40 is one and inserts thin slice, is used for making the contact pattern and contact device 20 insulation of circuit board.Each contact device 20 is formed by foil, so by pressing keys, foil is finished the resilient movement of up/down.
The air-breather 50 and second thin slice are whole to be formed, and is used for sucking and air-out, makes contact device 20 can gently finish elasticity and triggers.Air-breather 50 is connected with at least one or a plurality of contact device 20.
In addition, air-breather 50 connects contact device 20 in the mode of keeping straight on, and air sucks direction A and pushes direction P perpendicular to being applied on the contact device 20.Air vents 50 comprises: an air intake 52 is used to suck extraneous air; A plurality of trigger units 54 are connected with air intake 52, and each all is made up of the circular recess that is used for holding contact device 20; With a plurality of links 56, be used for trigger unit 54 is linked together.
Now with aforesaid function of the present invention of description scheme and effect.
Shown in Fig. 3 to 5, push-button pad assembly 1 is installed in the mobile communications device of being furnished with dial key or function key.Push-button pad assembly 1 is to be used for contacting with the contact pattern 12 of printed circuit board (PCB) 10, thereby produces the signal of telecommunication.Air-breather 50 is not formed in the circuit board 10, and is formed in second thin slice, therefore, prevents the suction of foreign matter effectively.To describe below according to push-button pad assembly 1 of the present invention.
At first, be installed in printed circuit board (PCB) 10 in the mobile communications device (mobile phone) and be equipped with a plurality of contact patterns 12 corresponding to button (not illustrating among the figure) quantity.Each contact pattern 12 contacts with the contact device 20 of an arch, sends the signal of telecommunication.Each contact pattern 12 is made up of the two annulus 12a and the 12b of mutual electric insulation, and by face contact device 20 it is electrically connected, thereby produces the signal of telecommunication.
Simultaneously, each contact device 20 that is arranged on the circuit board 10 makes it possible to the two annulus 12a and the 12b of mutual electric insulation are linked together.Contact device 20 is arranged matchingly with the contact pattern 12 of circuit board 10, and is formed on first thin slice 30.
First thin slice is by vinyl, and the polyester film that scribbles cohesive material above for example is made.Below first thin slice 30, be provided with second thin slice 40, it serves as the insertion thin slice that is used for making contact device 20 and contact pattern 12 to be separated from each other.
Therefore second thin slice 40 and first thin slice 30 are bonded together, and be stacked on the circuit board 10.To describe in detail as the back, each contact device 20 will be fixed on each trigger unit 54 of the air-breather 50 that is formed in second thin slice 40.In this case, contact device 20 is attached on the bottom surface of first thin slice 30.
Second thin slice 40 is made by white flakes, makes to reflect the light of LED (not illustrating among the figure) at an easy rate.The trigger unit 54 of air-breather 50 is circular, and is used for guiding contact device 20, so that they are triggered exactly.
In addition, as mentioned above, trigger, must suck and air-out in order to make contact device 20 finish elasticity.For this purpose, the one or more at least air-breathers 50 of whole formation in second thin slice 40.Just, to carrying out die-cut (blank), form air-breather 50 as second thin slice 40 that inserts thin slice.
In this case, the circuitous pattern of circuit board 10 insulate with contact device 20 mutually by second thin slice 40, thereby prevents any type of electrical short.Form with the thin metal that is arch forms contact device 20.
In addition, a plurality of trigger units 54 of air-breather 50 connect in the mode of straight line, and for them, a single air intake 52 is just enough.Therefore, need not form with routine techniques in the as many air intake 52 of air vent hole.
Particularly, as shown in Figure 4 because air-breather 50 is formed in second thin slice 40, the suction of air and discharge that direction A is different from contact device push direction P (as shown in Figure 2), push direction P and be perpendicular to.Therefore, can prevent contact device 20 aspirated foreign bodies largely.
Therefore, can prevent the triggering fault that the accumulation owing to foreign matter causes in advance, and can prevent that gold-plated contact pattern 12 from being corroded.
Air-breather 50 comprises: an air intake 52 is used to suck extraneous air; A plurality of trigger units 54 are connected with air intake 52, and each trigger unit is made up of the circular recess that makes contact device 20 separate and to contact; With a plurality of links 56, be used for trigger unit 54 is linked together.
Therefore air intake 52 is connected with trigger unit 54 by link 56, and therefore makes the formation of air-breather 50 become easy.Just, having only must be to carrying out the die-cut air-breather 50 that forms as second thin slice 40 that inserts thin slice.
Simultaneously, according to the quantity of first thin slice, 30 contact devices, and, in its four marginal portions, form one or more air intakes 52 according to the size of first and second thin slices 30 and 40.The trigger unit 54 of air-breather 50 is made than contact device 20 a little greatly, made ventilation become mild.
Therefore,, just air vent hole need be in circuit board, do not got out, and the triggering fault that the accumulation owing to foreign matter causes can be prevented in advance owing to form air-breather 50 by being punched in second thin slice 40.
According to aforesaid the present invention, during the button that triggers mobile phone, the suction and the similar influence of foreign matters such as for example dust are reduced to minimum.Therefore, can prevent the triggering fault that the accumulation owing to foreign matter causes in advance, and can prevent that gold-plated contact pattern from being corroded.
In addition, not be used in and get out air vent hole in the circuit board, but in second thin slice, form air-breather, make it possible to make in an easy manner push-button pad assembly.
At last, even when the design of communicator made amendment, the modification of corresponding air-breather also is easy.
Claims (17)
1. push-button pad assembly that is used for mobile communications device comprises:
A printed circuit board (PCB) (10) is formed with contact pattern (12) on it, be installed in the described device;
First thin slice (30) is furnished with a plurality of contact devices (20) on it, contact with the described contact pattern (12) of described circuit board (10);
Second thin slice (40) is arranged between described first thin slice (30) and the described circuit board (10), is used for fixing described contact device (20); With
At least one or a plurality of air-breather (50) are formed on described second thin slice (40), are used for sucking and air-out, so that the effect of pushing of the elasticity of described contact device (20) becomes possibility.
2. push-button pad assembly according to claim 1, described second thin slice (40) that wherein is arranged between described first thin slice (30) and the described circuit board (10) makes the described contact pattern (12) of described circuit board (10) and described contact device (20) insulate.
3. push-button pad assembly according to claim 1, wherein each described contact device (20) is made up of the sheet metal that is arch.
4. push-button pad assembly according to claim 1, wherein each described contact pattern (12) is made up of coaxial pair of annulus figure (12a and 12b), and described pair of annulus is electric insulation each other, and connects together by described contact device.
5. push-button pad assembly according to claim 1, wherein said first thin slice (30) are the vinyl thin slices with viscosity.
6. push-button pad assembly according to claim 1, wherein said second thin slice (40) are the insertion thin slices that sticks between described first thin slice (30) and the described circuit board (10).
7. according to any one described push-button pad assembly in the claim 1 to 6, wherein said second thin slice (40) is a white, can be convenient to the reflection of LED light.
8. push-button pad assembly according to claim 1, wherein in described air-breather (50), ventilation direction (A) is pushed direction (P) perpendicular to described contact device (20).
9. push-button pad assembly according to claim 1, wherein said air-breather (50) is connected with at least one or a plurality of contact device (20).
10. push-button pad assembly according to claim 9, wherein said air-breather (50) is the straight line type of attachment with described contact device (20).
11. push-button pad assembly according to claim 1, wherein said air-breather (50) comprising:
Air intake (52) is used to suck extraneous air;
A plurality of trigger units (54) are connected with described air intake (52), and each contact component is made up of the circular recess that is used for holding described contact device (20); With
A plurality of links (56) are used for described trigger unit (54) is linked together.
12. push-button pad assembly according to claim 11, the described air intake (52) of wherein said air-breather (50), described trigger unit (54) and described link (56) are integrally formed in together.
13. push-button pad assembly according to claim 11, wherein according to described first and second thin slices (30,40) size, and according to the layout of described contact device (20), one side in (40) four marginal portions of described second thin slice or the polygon middle described air intake (52) that forms described air-breather (50).
14. push-button pad assembly according to claim 11, each described trigger unit (54) of wherein said air-breather (50) has than the bigger a little size of described contact device (20).
15. push-button pad assembly according to claim 14, wherein each described contact device (20) is fixed in each described trigger unit (54) of described air-breather (50).
16. push-button pad assembly according to claim 11, each described trigger unit (54) of the described air-breather (50) of wherein said second thin slice (40) is circular, and as the guiding of described contact device (20), so that just in time it is received in himself.
17. push-button pad assembly according to claim 11, the described link (56) of wherein said air-breather (50) is arranged along a straight line.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR19990029514 | 1999-07-21 | ||
| KR29514/1999 | 1999-07-21 | ||
| KR23231/2000 | 2000-05-01 | ||
| KR1020000023231A KR100352491B1 (en) | 1999-07-21 | 2000-05-01 | Key pad assembly for mobile communica tion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1282088A true CN1282088A (en) | 2001-01-31 |
Family
ID=26635889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00109896A Pending CN1282088A (en) | 1999-07-21 | 2000-07-11 | Push-button pad assembly for mobile communication device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001067983A (en) |
| KR (1) | KR100352491B1 (en) |
| CN (1) | CN1282088A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344358A (en) * | 2013-07-31 | 2015-02-11 | 海洋王（东莞）照明科技有限公司 | Fire-fighting emergency signal lamp and muting button combination thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003263257A (en) * | 2002-03-07 | 2003-09-19 | Alps Electric Co Ltd | Keyboard input device |
| KR100464975B1 (en) * | 2002-09-23 | 2005-01-05 | 엘지전자 주식회사 | A metal dome sheet and keypad for a mobile phone |
| KR101224050B1 (en) * | 2006-05-10 | 2013-01-18 | 엘지전자 주식회사 | Keypad assembly and portable terminal having the same |
| KR100827669B1 (en) * | 2006-11-02 | 2008-05-07 | 주식회사 두성테크 | Print circuit board having multi pathway |
| CN103745853A (en) * | 2014-01-14 | 2014-04-23 | 无锡凯尔科技有限公司 | Structure applicable to press key with additional function |
| CN114093704B (en) * | 2021-11-05 | 2024-06-14 | 深圳市科普伦科技有限公司 | New structure film switch |
-
2000
- 2000-05-01 KR KR1020000023231A patent/KR100352491B1/en not_active IP Right Cessation
- 2000-07-11 CN CN00109896A patent/CN1282088A/en active Pending
- 2000-07-17 JP JP2000215401A patent/JP2001067983A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344358A (en) * | 2013-07-31 | 2015-02-11 | 海洋王（东莞）照明科技有限公司 | Fire-fighting emergency signal lamp and muting button combination thereof |
| CN104344358B (en) * | 2013-07-31 | 2019-03-08 | 海洋王（东莞）照明科技有限公司 | Fire-fighting emergent identification lamp tool and its mute button combination |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010014854A (en) | 2001-02-26 |
| KR100352491B1 (en) | 2002-09-11 |
| JP2001067983A (en) | 2001-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |