CN1921511A - Button assembly, and mobile phone comprising it - Google Patents
Button assembly, and mobile phone comprising it Download PDFInfo
- Publication number
- CN1921511A CN1921511A CNA200610103628XA CN200610103628A CN1921511A CN 1921511 A CN1921511 A CN 1921511A CN A200610103628X A CNA200610103628X A CN A200610103628XA CN 200610103628 A CN200610103628 A CN 200610103628A CN 1921511 A CN1921511 A CN 1921511A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- button
- key mat
- button assembly
- switch
- 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
Links
- 238000010295 mobile communication Methods 0.000 claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 239000000806 elastomer Substances 0.000 claims abstract description 6
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 235000013351 cheese Nutrition 0.000 description 34
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 239000013013 elastic material Substances 0.000 description 11
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 6
- 230000002950 deficient Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011176 pooling Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 150000003673 urethanes Chemical class 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Push-Button Switches (AREA)
- Telephone Set Structure (AREA)
Abstract
The present invention belongs to the components range of the mobile communication terminal, especially the button assembly, and the mobile communication terminal comprising the same. The button assembly includes the following parts: a button noumenon projecting outside the noumenon; a key pad fixed on the button noumenon and contacted with the switch held in the inner of the noumenon, wherein the key pad has a flange made of the elastomer and contacted with the noumenon. Based on the button assembly of the invention, the touch of the button is advanced to prevent the button deviating and the noise generating, and the mechanical friction of the button, the fatigue defect and the misoperation of the switch. In the mobile communication terminal of the invention, the above button assembly is installed and the shell of the button assembly is mounted to restrain the noise when vibrating and prevent the mechanical friction of the button and the defect caused by the abrasion, at the same time, to make the switch operated correctly.
Description
Technical field
The invention belongs to the mobile communication terminal components range, particularly button assembly and be provided with the mobile communication terminal of button assembly.Specifically, improve its sense of touch and can prevent that button breaks away from and the generation of noise by the elasticity that increases button, the while can prevent the mechanical friction and the tired defective of button and prevent the misoperation phenomenon of switch.
Background technology
In general, mobile communication terminal is that the user can use and can carry the wireless mobile communication device of use in moving process at indoor or outdoors, its from initial voice transmitting-receiving function development become that current execution recreation, MP3 listen to, the device of multiple function such as internet and TV watch.
Particularly, utilize mobile communication terminal to transmit word message recently and obtain generalizing, and, developed into the stage of utilizing the mobile communication terminal online, therefore, the button of mobile communication terminal input availability will be more and more higher as can be seen.
Correspondingly,, sharply increase the tired defective of button, various glitch not only often take place owing to increase considerably by the number of times of load button, and, there are the problem points such as misoperation of button, therefore, with the research of carrying out constantly for the mobile communication terminal button.
Below, with reference to accompanying drawing, carry out following explanation for the button of mobile communication terminal in the conventional art.
Fig. 1 is the stereogram of structure that is provided with the mobile communication terminal of button of the prior art; Fig. 2 and Fig. 3 are the sectional views of the A-A ' line among Fig. 1, and wherein, Fig. 2 is the bottom of button situation about being made of urethanes (urethane) material (below, be called " conventional art 1 "); Fig. 3 is the bottom of button situation about being made of rubber (rubber) material (below, be called " conventional art 2 ").
As shown in Figure 1, have the mobile communication terminal 1 of button in the conventional art, include following several sections: terminal body 10; Hinge is incorporated into the turning cover part 20 of the upper end of terminal body 10; Be formed at a plurality of buttons 30 of the front and the side of terminal body 10.
At this, above-mentioned terminal body 10 includes following several sections: the housing 11 that forms shell; Be fixed in lower case 11b, and be used for the circuit board 12 of electricity operation mobile communication terminal 1; Be arranged at circuit board 12 above, and be used for cheese switch 13 to circuit board 12 input signals; Can carry out dismounting and be incorporated into the battery 14 at the back side of terminal body 10; Be formed at the antenna 15 of the side upper end of terminal body 10.
Above-mentioned turning cover part 20 includes following several sections: be formed at the front of turning cover part 20, and be used for the display part 21 of display message; Be arranged at the loud speaker 22 on display part 21 tops.
On the one hand, the button 30a that has in the conventional art 1 as shown in Figure 2, includes following several sections: protuberance 31, and it protrudes to the exterior section of upper body 11a, forms the top of button 30a, makes the user can pin button; Flange 32, it be formed at protuberance 31 below, and have the external diameter bigger than protuberance 31, make to prevent that button 30a breaks away to the outside of mobile communication terminal 1; Work projection 33, its protrude be formed at flange 32 below, make flange 32 place the straight top of cheese switch 13.At this moment, the protuberance 31 general acrylonitrile-butadiene-styrene (ABS) co-polymers (ABS:Acrylonitrilebutadiene styrene copolymer) that adopt; Flange 32 and 33 urethanes that adopt high rigidity (hardness is in 80 to 90 scopes) of work projection, and, generally with flange 32 and work projection 33 to protuberance 31 dual ejaculation manufacturings.
On the other hand, the button 30b that has in the conventional art 2, as shown in Figure 2, include following several sections: protuberance 31, it protrudes to the exterior section of upper body 11a, forms the profile of button 30b, makes the user can pin button, and the fast edge of integrally formed card, make and avoid button 30b to break away to the outside of mobile communication terminal 1; Operate portions 32, it is inserted in the recess of protuberance 31 bottoms, and has the work projection 33 on the straight top that places cheese switch 13.
At this moment, the general acrylonitrile-butadiene-styrene (ABS) co-polymer ABS that adopt of protuberance 31, flange 32 and 33 of work projectioies adopt the rubber materials, and, generally operate portions Final 32 system is pressed from both sides into the mode of the recess 31b of protuberance 31 bottoms and make.
In the conventional art according to structure as mentioned above, the action principle of mobile communication terminal 1 with button is as follows.
On the one hand, when the user utilizes mobile communication terminal 1 editor's Word message or online chat or input telephone number, exert pressure and press the button 30 to button 30 with finger, at this moment, the pressure that is applied to protuberance 31 will be communicated to flange 32 (situation among Fig. 2) or work projection 33 (situations among Fig. 3), correspondingly, protruding work projection 33 downward directions that form in the bottom of flange 32 or work projection 33 moves.
Correspondingly, work projection 33 is pressed cheese switch 13, and cheese switch 13 has with circuit board 12 and electrically contacts, and therefore, signal is input in the circuit board 12.Then, circuit board 12 transmits signals to display part 21 again, therefore, the user can be on one side referring to the information that shows in the display part 21 action button 30 and edit Word message or online chat or input telephone number on one side.
But, under the button 30a situation according to mobile communication terminal in the conventional art 1 as mentioned above, because button 30a and housing 11 are separately with the injection molding method manufacturing, therefore, moulding resin is in hardening process, since take place the 1st shrink and, because of the 2nd contraction that the difference of product surface temperature and external temperature causes, will produce the amount of contraction of maximum ± 0.05mm.Correspondingly, when button 30a and housing 11 are assembled, the build-up tolerance of maximum generations ± 0.1mm (consideration amount of contraction separately).That is,, can not in time operate cheese switch 13, produce the misoperation phenomenon of cheese card pass 13 even when the user presses the button 30a; And when pressing the button 30a, its corresponding counter having an effect of button 30a dies down, and therefore has the bad problem points of sense of touch.
Also have, as among Fig. 2 in detail shown in, above-mentioned build-up tolerance will cause, the horizontal tolerance d1 that produces between protuberance 31 and the upper body 11a and, the vertical tolerance d2 of generation between work protruding 33 and the cheese switch 13.Correspondingly, because horizontal tolerance d1 and vertical tolerance d2 cause, when mobile communication terminal 1 adopts vibrating mode, producing problem points such as mechanical friction or tired defective because of impact between button 30a and the housing 11 or between button 30a and the cheese switch 13, also is simultaneously one of reason that increases noise.And, because horizontal tolerance causes button 30a and upper body 11a accurately not to mesh, there is the problem points of rocking.
On the other hand, when the user utilizes the button 30b of mobile communication terminal in the conventional art 2 as mentioned above, owing to operate portions 32 is pressed from both sides the into recess 31b of protuberance 31 bottoms in the pressure mode, exists protuberance 31 and operate portions 32 to produce the problem points of distortion because of external force.
For reducing the distortion that produces owing to external force as mentioned above, if the pressure clamped condition of protuberance 31 and operate portions 32 is become loosening, operate portions 32 breaks away from from protuberance 31 in can causing using, so the use of button 30b will lose efficacy, and the misoperation of initiation cheese switch 13.
Also have, for preventing that operate portions 32 breaks away from from protuberance 31, clamp if force, protuberance 31 and operate portions 32 will deform because of external force, and the height of shortening button 30b, therefore, when pressing the button 30b, correspondingly counter the having an effect of its corresponding button 30b also weakened, and has the bad problem points of sense of touch.
Summary of the invention
For solving problem points as mentioned above, its purpose of the present invention is, a kind of button assembly is provided and is provided with the mobile communication terminal of button assembly, by improving the elasticity of button, the generation of noise when the sense of touch of raising button also can prevent to vibrate, the while can prevent the mechanical friction and the tired defective of button and prevent the misoperation phenomenon of switch.
For reaching purpose as mentioned above, the button assembly among the present invention includes following several sections: the button body that protrudes to the outside of body; The key mat that is fixed in above-mentioned button body and contacts with switch that the inside of body holds, wherein, above-mentioned key mat has by elastomer and constitutes the flange that contacts with body.
Wherein, be provided with soft elastic material in the bottom of button body, its purpose is, provides pooling feature to button, prevents to impact the mechanical friction and the tired defective that cause, and reduces noise.
At this, above-mentioned key mat appends and includes, protrudes to be formed at the one side of key mat and to be contacted with switch, and the work projection that constitutes by soft elastic material, and in key mat, protruding outer peripheral face at intervals and along outer peripheral face is recessed to form fluted being advisable from working.
Wherein, owing to have outstanding formation and by the work projection that soft elastic material constitutes, not only can accurately press switch, and, when pressing the button, corresponding reaction can be produced immediately, and elasticity can be increased, make and improve sense of touch.
Also have,, not only can make the action of work projection soft more, can also make elastic force reach the effect of maximization owing to force to be formed with groove along the outer peripheral face of work projection.
At this moment, above-mentioned work projection preferably at a certain distance the state of compression contact down and be advisable with switch.Its purpose is that the work projection is made of soft elastic material, even the user presses the button and the mobile working projection, and before the work projection is compressed to certain distance, can not console switch.Promptly, after the inside of the projection of working is by the time compressed fully, could pass on user institute applied pressure to switch, therefore, the state of the projection of will working in advance compression certain distance contacts down and with switch, then not only can reduce the time of the projection compression certain distance of will working, and generation presses the button the corresponding reaction of time institute's applied pressure at once, and improved sense of touch.
On the other hand, for reaching purpose as mentioned above, the invention provides button assembly and the mobile communication terminal that is provided with above-mentioned button assembly as mentioned above.
Beneficial effect of the present invention the invention provides a kind of button of mobile communication terminal, it not only can improve the sense of touch of button, and can prevent that button breaks away from and the generation of noise, the while can prevent the mechanical friction and the tired defective of button and prevent the misoperation phenomenon of switch.
Description of drawings
Fig. 1 is the stereogram of structure that is provided with the mobile communication terminal of button of the prior art.
Fig. 2 and Fig. 3 are the sectional views of the A-A ' line among Fig. 1, wherein,
Fig. 2 is the situation that the bottom of button is made of the urethanes material.
Fig. 3 is the situation that the bottom of button is made of the rubber material.
Fig. 4 is the partial cross section figure of the button of the mobile communication terminal in one embodiment of the invention.
Fig. 5 illustrates the button among Fig. 4, wherein,
Fig. 5's a) is the stereogram of watching from top.
The b of Fig. 5) is the stereogram of watching from the bottom.
The c of Fig. 5) be plane graph.
The table of the experimental result of the sense of touch of table 1 button.
The table of the experimental result of the adherence force of table 2 button.
The table of the experimental result of the noise level of table 3 button.
The symbol description of accompanying drawing major part
110: terminal body 111: housing 112: circuit board 113: the cheese switch
130: button 131: button body 132: key mat 1321: the key mat body
1322: flange 133: work projection 134: groove 135: anti-detachment projection
Embodiment
The invention provides a kind of button assembly and be provided with the mobile communication terminal of button assembly.
Following with reference to accompanying drawing, be described in detail for the structure and the action principle thereof of the button assembly of mobile communication terminal in one embodiment of the invention.
But,, in explanation of the present invention, will omit for well-known function or structure for clear and definite main idea of the present invention.Also have, for conventional art in the same content that illustrates, will describe with identical drawing symbol.
Fig. 4 is the partial cross section figure of the button of the mobile communication terminal in one embodiment of the invention; Fig. 5 illustrates the button among Fig. 4, and wherein, Fig. 5's a) is the stereogram of watching from top; The b of Fig. 5) is the stereogram of watching from the bottom; The c of Fig. 5) be plane graph; To shown in Figure 5, in the mobile communication terminal that is provided with button assembly in one embodiment of the invention, include following several sections: terminal body 110 as Fig. 4; Hinge is incorporated into the turning cover part 20 of the upper end of terminal body 110; Be formed at a plurality of buttons 130 in front of terminal body 110.
At this, above-mentioned terminal body 110 includes following several sections: the housing 111 that forms shell; Be fixed in lower case 111b, and be used for the circuit board 112 of electricity operation mobile communication terminal; Be arranged at above the circuit board 112, and be used for cheese switch 113 to circuit board 112 input signals; Can carry out the battery that dismounting is incorporated into the back side of terminal body 110; Be formed at the antenna of the side upper end of terminal body 110.
At this moment, be used for the dome switch 113 to circuit board 112 input signals, itself has the strain to a direction, the feasible elastic force that has as disc spring.In an embodiment of the present invention, use dome switch 113 to circuit board 112 input signals, but standard switch structures of using other to be fit to are also harmless.That is, even the switch of common contact mode, as aftermentioned, as long as can just can to the circuit board input signal by the work projection.
Above-mentioned turning cover part 20 includes following several sections: be formed at the front of turning cover part 20, and be used for the display part 21 of display message; Be arranged at the loud speaker 22 on display part 21 tops.
Above-mentioned button 130 includes following several sections: it protrudes button body 131 to the exterior section of upper body 111a, makes user's button that can press...with one's finger; Key mat 132, it be formed at button body 131 below, have than the bigger external diameter of button body 131 and block in upper body 111a, make to prevent that button 130 breaks away to the outside of upper body 111a.
At this moment, above-mentioned button body 131 is made of acrylonitrile-butadiene-styrene (ABS) co-polymer (ABS:Acrylonitrile butadiene styrene copolymer) or polystyrene (PS:Poly-Styrene).Also have,,, therefore preferably select higher hardness by user's lasting generation frictions such as finger because button body 131 is exposed to the outside of upper body 111a.Button body 131 is exposed to the outside of upper body 111a, also influences the outward appearance of mobile communication terminal integral body largely, therefore can give color diversely by modes such as dual ejaculations.And, insert the LED element by inside to button body 131, make button body 131 transparent, therefore, the user can also provide illumination functions when press the button night.
Central portion protrusion at above-mentioned key mat 132 is formed with work projection 133, and it places the straight top of cheese switch 113 and is used to operate cheese switch 113; Outer peripheral face along work projection 133 is recessed to form fluted 134 with certain depth.Key mat 132 and work projection 133 preferably are made of thermoplastic elastomer (TPE) (TPE:Thermo-Plastic Elastomer), but, as long as button assembly 132 and work projection 133 can be given elasticity and be had the soft elastic material that pooling feature (preventing impact function) also fully can adopt soft.
Above-mentioned button body 131 and above-mentioned key mat 132 are preferably by dual shoot mode manufacturing.But, with key mat 132 by alite paste or utilize thermal be arranged at button body 131 below, also belong in the claim scope of the present invention.
Above-mentioned work projection 133 preferably is close to cheese switch 113.
Owing to have vertical tolerance (tolerance between work projection and the cheese switch) in the prior art, when mobile communication terminal is set at vibration mode, have the problem points that impact takes place between button and the cheese switch.For solving problem points as mentioned above, in the present invention the work projection 133 of soft elastic material is close to cheese switch 113, can provide button 130 upward to the elasticity support, can minimize horizontal tolerance and vertical tolerance between button 130 and upper body 111a and button 130 and the cheese switch 113, therefore, even mobile communication terminal when vibration, also can avoid because of impact or mechanical friction impaired.
Particularly, above-mentioned work projection 133 preferably is compressed to according to the following equation the state of the compression ratio degree of (1) calculating and contacts with above-mentioned cheese switch 113.
Compression ratio %=H-H1 100....................................... (1)
In the formula H be from projection 133 the lower end of working to the height of the upper end of button body 131, H1 is the height of the lower end of the work projection 133 after the compression to the upper end of button body 131.Because the work projection 133 soft elastic materials by soft constitute, therefore at that time during plus-pressure, can not above-mentioned pressure be communicated to cheese switch 113 at once,, self uses partial pressure for compressing.Correspondingly, when the user presses the button 130, can not in time produce reaction, only under protruding 133 compressive states of work, produce along with the reaction of cheese switch 113.For addressing the above problem, as mentioned above, be pasted on cheese switch 113 under the state of the projection 133 of will working in advance compression at a certain distance.At this moment, because the elastic force of protruding 133 storage inside of work is not enough to operate cheese switch 113, therefore be stored in work projection 133 inside, when the user presses the button 130, by user institute applied pressure and the elastic force that is stored in work projection 133 inside, but direct control cheese switch 113.
Above-mentioned groove 134 is recessed to form between the key mat body and flange of the bottom surface of key mat 132, owing to form above-mentioned groove, makes button 130, the particularly action of key mat 132 more freely, and can increase the elastic force of key mat 132.
Above-mentioned key mat 132 is formed with key mat body 1321 and flange 1322, and wherein, flange 1322 blocks in upper body 111a, is used to prevent that button 130 breaks away to the outside of upper body 111a.Correspondingly, when 1322 of flanges are made of soft elastic material, has the danger that button 130 breaks away to the outside of upper body 111a easily, therefore as among Fig. 5 in detail shown in, anti-detachment protruding 135 formations that the part of flange 1322 is preferably formed by acrylonitrile-butadiene-styrene (ABS) co-polymer (ABS) material of high rigidity (shown in the c of b, Fig. 5 of Fig. 5).Particularly, in flange 1322, be provided with separately on the relative place one anti-detachment protruding 135, the danger of avoiding button 130 to break away to the outside of upper body 111a.
For the action principle of the button assembly of the related mobile communication terminal of one embodiment of the invention of structure as mentioned above, carry out following explanation.
When the user utilizes mobile communication terminal editor Word message or online chat or input telephone number, with finger knob down 130, at this moment, the pressure that is applied to button 130 will be communicated to key mat 132 by button body 131, and above-mentioned pressure will be communicated to spue and be formed at the work projection 133 of key mat 132 bottom surfaces.
At this moment, because the state that work projection 133 is compressed with part is close to the top of cheese switch 113, therefore add user's applied pressure by the elastic force that is stored in work projection 133 inside, work projection 133 will be pressed cheese switch 113.
In succession, because cheese switch 113 electrically contacts with circuit board 112, can input signal, and circuit board 112 is sent to display part 121 with its signal.Therefore, while the user can confirm in the display part 121 the information action button 130 that shows and edit Word message or online chat or import telephone number.
At this moment, above-mentioned key mat 132 and work projection 133 are formed by soft elastic material, and work projection 133 is in the state that compresses according to the compression ratio degree of above-mentioned formula (1) calculating, and therefore, cheese switch 113 produces reaction at once and sense of touch is preferably arranged when the user presses the button 130.Sense of touch, is the yardstick that utilized usually by the insider in the technical field of the invention and detects by the sense of touch detector for the yardstick that user institute applied pressure is represented by percentage as counter the having an effect of button 130 (including counter the having an effect that the elastic force according to cheese switch 113 produces).Sense of touch check result of the present invention is as shown in table 1.
Table 1
| The gap | The present invention | Prior art | |||
| -0.05 | -0.1 | -0.15 | -0.2 | ||
| Sense of touch | 55％ | 53％ | 50％ | 43％ | 20～25％ |
| Whether switch motion | Be failure to actuate | Be failure to actuate | Be failure to actuate | Be failure to actuate | Action |
At this, clearance G ap can be drawn by following formula (2), the part that is equivalent to work projection 133 be compressed and produce overlapping.
Gap＝d-(a+b+c)............................................(2)
Wherein d is the upper and lower part housing 111a of terminal body 110, the distance between the 111b, a is the height of circuit board 112 and cheese switch 113, b be the lower end of work projection 133 to the distance between key mat 132 following, c is the thickness of key mat 132.Then,, work projection (133) is inserted in because being compressed under the state of certain distance, lower case 111a, and between the 111b, so the value of a+b+c is generally greater than d.That is, Gap will draw negative value, and the compression degree of the big more expression work of the absolute value of Gap projection 133 is big more.
As shown in table 1, for the sense of touch of improving button in the conventional art is 20 to 25%, the sense of touch of button 130 then detects 43 to 55% among the present invention.The big more then compression ratio of the absolute value of clearance G ap also correspondingly increases, and learn when clearance G ap be-during 0.05mm, its sense of touch the best.At this moment, the projection of will working 133 compressions too much then owing to the elastic force that is stored in work projection 133 inside is excessive, exist the user to press the button the danger that just might operate the cheese switch before 130.As shown in table 1, when clearance G ap reach-during 0.2mm, cheese switch 113 is not operated yet.
Aforesaid clearance G ap or overlap in the design of product extremely important.Competitiveness for nearest mobile communication terminal focuses in its big or small miniaturization, aforesaid gap is set and overlappingly not only can guarantees its design space, also has the advantage with the mobile communication terminal miniaturization simultaneously.
According to result as shown in table 1, if will produce the button 130 of mobile communication terminal in batches the time, consider its coefficient of safety 0.5 again for-0.2mm for maximal clearance Gap value, then draw best clearance Gap and be-0.10mm according to following formula (3).
Best clearance=(maximal clearance) * (coefficient of safety) ... ... .. (3)
Correspondingly, during the design button, for satisfying best clearance-0.10mm, best tolerance is set at-0.05 ± 0.05mm.
On the other hand, because above-mentioned button body 131 and above-mentioned key mat 132 be by dual ejaculation, button body 131 molecules in button body 131 and key mat 132 interfaces and the athletic meeting between key mat 132 molecules come to life, and therefore increase the power that mutually combines.For confirming that effect is done following experiment as mentioned above, apply rightabout power to button body 131 and key mat 132, and measure the power of button body 131 and 132 separated moments of key mat.As shown in table 2 to above-mentioned experiment structure, the button 30 in the conventional art begins when reaching 7kgf to separate, and the button 130 among the present invention just begins when then reaching 20kgf to separate.
Table 2
| Distinguish | The present invention | Prior art |
| Adherence force | 20kgf | 7kgf |
Also have, the top of being close to cheese switch 113 under the above-mentioned work projection 133 compressed states, the following flange 1322 of being close to upper body 111a then has soft elastic material to form, even so the noise of mobile communication terminal when being set at vibrating mode also reduced greatly.That is, by the work projection 133 under the compressive state, button 130 is upward to the elasticity support is provided; And, therefore also reduce its noise because flange 1322 is formed by soft elastic material, and the contact portion between flange 1322 and the upper body 111a has pooling feature.For guaranteeing effect as mentioned above, mobile communication terminal is transformed into vibration mode and is adding under the state of strong vibration, the 10cm of being separated by detects noise.It is as shown in table 3 for above-mentioned result of experiment,
Table 3
| Distinguish | The present invention | Prior art |
| Noise level | 45dB | 71dB |
Button 30 in the conventional art is measured 71dB, and it is equivalent to the noise 70dB of motor road, and on the contrary, 130 on the button among the present invention is measured and is 45dB, can confirm that its noise reduces greatly.
More than be illustrated for most preferred embodiment among the present invention, but claim scope of the present invention is not limited to above-mentioned specific embodiment, suitably can be out of shape or change in the category of being put down in writing in the claim scope.But the present invention does not need to bring into play above-mentioned institute and produces effect and just can set up.
Claims (18)
1. a button assembly is characterized in that, includes following several sections:
The button body that protrudes to the outside of body;
The key mat that is fixed in above-mentioned button body and contacts with switch that the inside of body holds;
Wherein, has the flange that constitutes and contact by elastomer in the above-mentioned key mat with body.
2. according to the described button assembly of claim 1, it is characterized in that above-mentioned key mat includes following several sections:
Be connected in the key mat body of above-mentioned button body;
From the outer peripheral face expansion formation of above-mentioned key mat body and the flange that contacts with above-mentioned housing;
The work projection that protrusion is formed at above-mentioned key mat body and contacts with above-mentioned switch.
3. according to the described button assembly of claim 2, it is characterized in that above-mentioned key mat for increasing the elastic force of above-mentioned key mat, is recessed to form fluted between above-mentioned key mat body and above-mentioned flange.
4. according to the described button assembly of claim 3, it is characterized in that above-mentioned button body is formed by plastic cement.
5. according to the described button assembly of claim 4, it is characterized in that above-mentioned key mat is made of thermoplastic elastomer (TPE).
6. according to the described button assembly of claim 5, it is characterized in that the hardness of above-mentioned key mat is in 35 to 55 scope.
7. according to the described button assembly of claim 6, it is characterized in that above-mentioned work projection is contacted with above-mentioned switch under confined state.
8. according to the described button assembly of claim 7, it is characterized in that above-mentioned flange has at least more than one anti-detachment projection, prevent that above-mentioned key mat breaks away from from above-mentioned housing.
9. according to the described button assembly of claim 1, it is characterized in that above-mentioned button body and above-mentioned key mat are by dual shoot mode ejection formation.
10. a button assembly is characterized in that, includes following several sections:
The button body that protrudes to the outside of housing;
The key mat that is fixed in above-mentioned button body and contacts with switch that the inside of above-mentioned housing holds;
Wherein, have the elastomeric flange that constitutes and contact by elastomer TPE in the above-mentioned key mat, and be formed with the groove that is used to increase above-mentioned key mat elastic force with above-mentioned housing.
11., it is characterized in that above-mentioned key mat includes following several sections according to the described button assembly of claim 10:
Be connected in the key mat body of above-mentioned button body;
From the outer peripheral face expansion formation of above-mentioned key mat body and the flange that contacts with above-mentioned housing;
The work projection that protrusion is formed at above-mentioned key mat body and contacts with above-mentioned switch.
12. according to the described button assembly of claim 10, it is characterized in that, between above-mentioned key mat body and above-mentioned flange, be recessed to form fluted.
13., it is characterized in that above-mentioned key mat is made of thermoplastic elastomer (TPE) TPE according to the described button assembly of claim.
14. according to claim 13, button assembly involved in the present invention is characterized in that, the hardness of above-mentioned key mat is in 35 to 55 scope.
15. according to claim 13, button assembly involved in the present invention is characterized in that, is contacted with above-mentioned switch under the above-mentioned work projection confined state.
16. according to claim 10, button assembly involved in the present invention is characterized in that, above-mentioned button body and above-mentioned key mat are by dual shoot mode ejection formation.
17. a button assembly is characterized in that, includes following several sections:
The button body that protrudes to the outside of housing;
The key mat that is fixed in above-mentioned button body and contacts with switch that the inside of above-mentioned housing holds;
Wherein, has the flange that contacts with above-mentioned housing and form by low hardness elastomer in the above-mentioned key mat.
18. a mobile communication terminal is characterized in that, includes following several sections:
According to a certain item related button assembly of claim 1 to claim 17;
Be provided with the housing of above-mentioned button assembly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050078005 | 2005-08-24 | ||
| KR1020050078005A KR100631662B1 (en) | 2005-08-24 | 2005-08-24 | A button assembly and a mobile terminal having the button assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1921511A true CN1921511A (en) | 2007-02-28 |
Family
ID=37635405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610103628XA Pending CN1921511A (en) | 2005-08-24 | 2006-07-26 | Button assembly, and mobile phone comprising it |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100631662B1 (en) |
| CN (1) | CN1921511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450817A (en) * | 2015-12-23 | 2016-03-30 | 广东欧珀移动通信有限公司 | Key and installing structure thereof |
| CN115279467A (en) * | 2020-03-31 | 2022-11-01 | 索尼互动娱乐股份有限公司 | input device |
-
2005
- 2005-08-24 KR KR1020050078005A patent/KR100631662B1/en not_active IP Right Cessation
-
2006
- 2006-07-26 CN CNA200610103628XA patent/CN1921511A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450817A (en) * | 2015-12-23 | 2016-03-30 | 广东欧珀移动通信有限公司 | Key and installing structure thereof |
| CN105450817B (en) * | 2015-12-23 | 2018-06-08 | 广东欧珀移动通信有限公司 | Button and its mounting structure |
| CN115279467A (en) * | 2020-03-31 | 2022-11-01 | 索尼互动娱乐股份有限公司 | input device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100631662B1 (en) | 2006-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1274191C (en) | Electronic device and waterproofing structure thereof | |
| CN1208796C (en) | Push button switch and input device using the same | |
| CN1855337A (en) | Slide switch | |
| JP5193463B2 (en) | Switch module | |
| CN205069465U (en) | Biax key switch and keyboard | |
| CN1725404A (en) | Key sheet and method for manufacturing key sheet | |
| CN103413711A (en) | Thin keyboard composed of soft rubber parts and hard rubber parts | |
| CN1921511A (en) | Button assembly, and mobile phone comprising it | |
| CN1233000C (en) | Key switching structure | |
| CN202068461U (en) | Terminal keyboard structure and terminal | |
| CN213660240U (en) | Composite silica gel key | |
| EP1696449A3 (en) | A keyboard structure | |
| CN105450804A (en) | Mobile terminal | |
| CN102376483A (en) | Input device capable of improving contact sensitivity | |
| CN108666163A (en) | Key structure | |
| CN203386158U (en) | Muting mouse | |
| CN107450735A (en) | A kind of keyboard of notebook computer of no bottom plate | |
| CN203367102U (en) | Thin-type keyboard composed of flexible glue piece and hard glue piece | |
| JP3192596B2 (en) | Push button switch member | |
| CN2798284Y (en) | Keyboard assembly for electronic equipment | |
| TW201101110A (en) | Input device capable of increasing contact sensitivity | |
| CN207542123U (en) | A guide core assembly for ultra-thin key switch | |
| CN202434385U (en) | Button bouncing structure | |
| CN1728311A (en) | Key switching structure | |
| CN200944361Y (en) | Keyboard and its key structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |