Xaiv lub dome hlau zoo rau koj cov khoom siv hluav taws xob yuav tsum muaj kev nkag siab meej ntawm kev quab yuam, tactile piv, lub neej voj voog, cov khoom siv, thiab ib puag ncig specifications. Phau ntawv qhia kev siv tshuab no rhuav tshem txhua qhov kev ntsuas tseem ceeb uashlau dome manufacturerssiv los tsim thiab tsim precision snap domes, pab engineers txiav txim siab specifications.
Daim duab 1: Bulk stainless hlau hlau domes - txhua lub dome qhov kev ua tau zoo yog txhais los ntawm kev tswj cov geometric thiab cov khoom tsis zoo.
1. Core Performance Parameters txhais
Txhua daim ntawv qhia tshwj xeeb hlau dome muaj cov txheej txheem txheej txheem uas txhais tau tias nws cov hluav taws xob thiab kev ua haujlwm zoo. Kev nkag siab txog cov ntsiab lus no yog qhov tseem ceeb rau kev sib txuas lus zoo nrog kojhlau dome tsumthiab rau kev sib piv quotes los ntawm txawv manufacturers.
| Parameter | Cim | Txhais | Hom kab mob |
|---|---|---|---|
| Actuation Force | F1 (Peak Force) | Lub zog siab tshaj plaws yuav tsum tau pib dome snap- dhau | 100g – 500g |
| Snap Force | F2 (tsawg kawg nkaus) | Tuav lub hauv qab ntawm cov hlab ntsha tom qab snap-los ntawm | 40g – 250g |
| Tactile ratio | (F1-F2)/F1 × 100% | Qhov feem pua quab yuam poob ntawm snap point; txiav txim siab nias | 30% – 60% |
| Taug kev / mob stroke | ST | Vertical nrug ntawm unactuated mus rau tag nrho actuated txoj hauj lwm | 0.10mm-0.30 hli |
| Tiv tauj Resistance | Rc | Hluav taws xob tiv thaiv hla kaw dome hu | Tsawg dua lossis sib npaug rau 100mΩ (Au), Tsawg dua lossis sib npaug rau 300mΩ (Ni) |
| Lub neej voj voog | LC | Tus naj npawb ntawm actuations ua ntej quab yuam drift tshaj ± 20% lossis tiv tauj tsis tau | 100k – 10M+ |
2. Kev Sib Tw Zog thiab Tactile Ratio: Qhov Sib Txawv Zoo
Lub zog actuation (F1) thiab tactile piv yog ob qhov tsis zoo uas feem ntau txiav txim siab seb lub pob "xav" rau tus neeg siv kawg. Cov kev txwv no yog sib cuam tshuam thiab yuav tsum tau teev ua ke kom ua tiav cov neeg siv khoom xav tau.
Actuation Force Xaiv
Actuation quab yuam yog feem ntau txiav txim los ntawm dome khoom thickness, txoj kab uas hla, thiab geometry. Txoj kev xaiv yuav tsum xav txog:
- Nias cov yuam sij(ntim, khiav hla, keyboard): 150-200g kom txo cov ntiv tes qaug zog dhau kev siv txuas ntxiv.
- Standard interface nyees khawm(cov ntawv qhia zaub mov, OK, rov qab): 200-280g rau kev ntseeg siab, txhob txwm xav.
- Kev nyab xeeb - khawm tseem ceeb lossis tsis tshua muaj tshwm sim(lub zog, rov pib dua, phom sij): 280-400g los tiv thaiv kev ua yuam kev.
- dig muag- tswj kev ua haujlwm(steering log, industrial handheld): 220–300g nrog siab tactile ratio (Ntau tshaj los yog sib npaug rau 45%).
Rauround thiab duav hlau domes, qhov tshwj xeeb tshaj plaws quab yuam yog 200-250g, uas sib npaug tactile tawm tswv yim nrog kev ua haujlwm kev nplij siab thoob plaws cov neeg siv khoom siv hluav taws xob.
Tactile Ratio: Qhov Ntsuas Qhov Ntsuas Zoo
Tactile ratio yog ib qho tseem ceeb tshaj plaws metric rau kev pom zoo khawm zoo. Qhov sib piv tactile ntau dua ua rau lub suab "nias" ntau dua, thaum qhov qis dua zoo li muag muag lossis muag muag.
- 30–40%- Mos, nce siab. Txais tau rau cov khoom siv qis- tus nqi qis tab sis feem ntau qis dua tus qauv hwm. Feem ntau pom muaj nyob rau hauv membrane keyboards tsis muaj hlau domes.
- 40–50%- Zoo, nyem nyem. Txheem rau feem ntau cov neeg siv khoom siv hluav taws xob thiabhlau dome arraydaim ntawv thov.
- 50–60%- Crisp, hwm nyem. Yuav tsum tau rau cov khoom kim heev automotive interfaces, cov cuab yeej kho mob, thiab siab -kawg tswj kev lag luam.Daim duab peb sab hlau domesib txwm ua tiav qhov siab tshaj plaws tactile piv vim lawv peb - taw tes geometry.
Thaum hais txog qhov sib piv tactile, nco ntsoov thov tus nqi qis kawg nkaus (xws li, "tactile ratio Ntau dua lossis sib npaug li 45%") es tsis yog tus nqi nominal. Qhov no ua kom ntseeg tau tias txawm tias cov khoom tsim tawm ntawm qhov qis kawg ntawm qhov kev ua siab ntev tseem ua tau raws li koj xav tau. Force sorting rau ± 10% kam rau ua kom muaj kev xav zoo ib yam thoob plaws txhua tus yuam sij hauv ntau lub vaj huam sib luag -.
3. Kev kuaj lub neej thiab kev ntseeg tau
Hlau dome lub neej voj voog yog txhais raws li tus naj npawb ntawm actuations kom txog rau thaum lub actuation quab yuam drifts los ntawm ntau tshaj ± 20% los ntawm cov thawj specification, los yog kev tiv thaiv tiv thaiv tshaj qhov siab tshaj plaws (feem ntau 1Ω). Lub neej voj voog yog cuam tshuam los ntawm cov khoom zoo, plating, kev ua haujlwm, thiab lub kaum sab xis.
Tej yam cuam tshuam rau lub neej voj voog
- Cov ntaub ntawv qib- SUS301 stainless hlau muaj kev qaug zog zoo dua piv rau SUS304 rau kev siv caij nplooj ntoos hlav. Siab - carbon stainless hlau variants tuaj yeem ua tiav 10M+ cycles.
- Khoom thickness- Cov ntaub ntawv tuab (0.08–0.10mm) feem ntau muab lub neej ntev dua tab sis yuav tsum muaj zog ua kom muaj zog dua. Cov ntaub ntawv nyias nyias (0.05–0.06mm) yog siv rau kev siv tsawg - quab yuam tab sis yuav muaj lub neej luv luv.
- Plating- Kub plating (0.05–0.1µm) muab qhov zoo tshaj plaws corrosion kuj thiab qis tshaj kev tiv thaiv, ncua lub neej nyob rau hauv cov av ntub los yog corrosive ib puag ncig. Nickel plating yog tus nqi-zoo rau qhuav, huab cua- tswj sab hauv.
- Lub kaum sab xis- Center actuation (0℃offset) muab lub neej siab tshaj plaws. Tawm-kev ua haujlwm nruab nrab (5–15℃offset) tuaj yeem txo lub neej los ntawm 30–50% vim kev faib tawm tsis sib xws. Nco ntsoov qhia qhov xav tau lub kaum sab xis hauv koj qhov kev tsim qauv.
- Ua haujlwm kub - Elevated temperatures (>85 degree) ua kom cov khoom qaug zog thiab tuaj yeem txo lub neej los ntawm 40-60%. Cryogenic kub (<-20°C) increase material brittleness. Request life test data at your actual operating temperature range.
Lub neej voj voog los ntawm Daim Ntawv Thov
| Daim ntawv thov | Tej yam ua txhua hnub | Yuav Tsum Tau Lub Neej (5-xyoo lub neej) | Pom zoo Dome Spec |
|---|---|---|---|
| TV chaw taws teeb tswj | 10–30 | 20k–50k | Standard 100k voj voog, Ni-plated |
| Game controller | 100–500 | 200k–1M | 500k+ voj voog, Au-plated, 0.06mm |
| Automotive kauj | 5–20 | 10k-40k (tab sis 10-15 xyoo tsheb lub neej) | 1M+ cycle, Au-plated, IATF 16949 |
| Cov cuab yeej kho mob (infusion twj tso kua mis) | 50–200 | 100k–400k | 1M+ cycle, Au-plated, ISO 13485 |
| Industrial tswj vaj huam sib luag | 20–100 | 40k–200k | 500k + cycle, dav temp ntau, kaw |
4. Kev xaiv cov khoom siv: Stainless hlau qib thiab cov khoom siv
Feem ntau ntawm cov hlau domes yog tsim los ntawm austenitic stainless hlau vim nws zoo heev caij nplooj ntoos hlav zog, corrosion kuj, thiab formability. Kev xaiv ntawm cov khoom qib thiab thickness ncaj qha txiav txim siab quab yuam, lub neej voj voog, thiab ib puag ncig tsis kam.
Common Stainless Hlau Qib
- SUS301 (17Cr-7Ni)- Cov khoom siv dav tshaj plaws rau cov hlau domes. Muab lub caij nplooj ntoos hlav zoo heev nrog lub zog tensile siab (1500-2000 MPa hauv kev kub ntxhov). Zoo corrosion kuj rau feem ntau hauv tsev thiab tsheb siv. Muaj nyob rau hauv thicknesses ntawm 0.04mm mus rau 0.12mm.
- SUS304 (18Cr-8Ni)- Ntau dua corrosion-resistant dua SUS301 tab sis nrog lub caij nplooj ntoos hlav qis (qis zog tensile). Siv rau cov domes nyob rau hauv ib puag ncig corrosive heev los yog qhov twg tus nqi tsis tshua tseem ceeb. Yuav tsum muaj cov khoom tuab me ntsis kom ua tiav qhov sib npaug.
- SUS316 (17Cr-12Ni-2.5Mo)- Premium marine- qib stainless hlau nrog molybdenum ntxiv rau superior chloride thiab ntsev corrosion kuj. Siv rau marine electronics, khoom siv sab nraum zoov, thiab cov khoom siv kho mob uas yuav tsum tau ua kom tsis muaj menyuam autoclave. Tus nqi siab dua SUS301.
- Phosphor tooj liab (C5191 / C5210)- Copper alloy nrog zoo heev hluav taws xob conductivity thiab caij nplooj ntoos hlav zog. Kev tiv thaiv qis dua li stainless hlau tab sis tsawg dua corrosion kuj. Siv nyob rau hauv siab - zaus los yog tsawg- qhov hluav taws xob teeb liab daim ntawv thov qhov kev tiv thaiv tiv thaiv tseem ceeb heev.
Khoom Thickness thiab quab yuam kev sib raug zoo
Rau lub dome txoj kab uas hla thiab geometry, actuation quab yuam yog kwv yees li proportional rau lub voos xwmfab ntawm cov khoom thickness (F ∝ t³). Qhov no txhais tau tias kev hloov me me hauv thickness ua rau muaj kev hloov loj hauv kev quab yuam:
- 0.05mm thickness → ~ 100-150g quab yuam (tsawg- siv quab yuam)
- 0.06mm thickness → ~ 180-250g quab yuam (tus qauv siv hluav taws xob)
- 0.08mm thickness → ~ 300-400g quab yuam (kev lag luam thiab tsheb)
- 0.10mm thickness → ~ 450-600g quab yuam (hnyav-lub luag haujlwm, kev nyab xeeb- tseem ceeb)
Nco ntsoov qhia cov khoom thickness raws li ib feem ntawm koj daim duab lossis specification. Ib lub npe nrovhlau dome Hoobkasyuav suav nrog cov ntaub ntawv pov thawj (mill test report) nrog rau txhua qhov khoom xa tuaj, lees paub qhov tseeb qib thiab npau taws.
Daim duab 2: Solder- hom hlau dome nrog los ntawm - qhov ua rau ntawm PCB - siv nyob rau hauv siab - kev vibration ib puag ncig uas nplaum mounting tsis txaus.
5. Plating thiab Surface Treatment
Plating pab peb lub luag haujlwm tseem ceeb hauv cov hlau domes: txo kev tiv thaiv kev tiv thaiv, tiv thaiv corrosion, thiab txhim kho solderability. Kev xaiv ntawm cov khoom siv plating thiab thickness nyob ntawm daim ntawv thov ib puag ncig thiab cov khoom siv hluav taws xob.
Kub Plating (Au)
- Tiv tauj tiv thaiv: Tsawg dua lossis sib npaug rau 50mΩ pib, Tsawg dua lossis sib npaug rau 100mΩ tom qab kuaj lub neej
- Corrosion kuj: Zoo heev - inert rau feem ntau cov tshuaj thiab av noo
- Hom tuab: 0.03–0.1µm (flash kub) hla nickel underplate
- Daim ntawv thov: Cov khoom siv kho mob, tsheb, kev lag luam, siab -kev ntseeg siab rau cov neeg siv khoom siv hluav taws xob
- Nqi: Siab dua npib tsib xee, tab sis tus nqi sib txawv me me ntawm cov khoom siv
Nickel plating (Ni)
- Tiv tauj tiv thaiv: Tsawg dua lossis sib npaug rau 100mΩ pib, Tsawg dua lossis sib npaug rau 300mΩ tom qab kuaj lub neej
- Corrosion kuj: Zoo rau qhuav, huab cua- tswj ib puag ncig; tuaj yeem oxidize nyob rau hauv high humidity
- Hom tuab: 1–3µm
- Daim ntawv thov: Cov khoom siv hluav taws xob siv hluav taws xob, cov chaw taws teeb tswj, cov khoom siv qis- nqi
- Nqi: Feem ntau kev xaiv nyiaj txiag
Nyiaj plating (Ag)
- Tiv tauj tiv thaiv: Tsawg tshaj plaws ntawm tag nrho cov platings, tab sis raug rau tarnishing (silver sulfide tsim) nyob rau hauv sulfur- muaj ib puag ncig
- Daim ntawv thov: High-tam sim no lossis siab- cov ntawv thov zaus, tab sis tsis tshua siv rau cov qauv hlau domes vim muaj kev pheej hmoo tarnishing
6. Dome Geometry: Hloov, Plaub- ceg, daim duab peb sab, thiab Oval
Dome geometry txiav txim siab tiv thaiv kev ruaj ntseg, tactile piv, thiab tsim nyog rau cov duab keycap sib txawv. Txhua geometry muaj qhov zoo sib xws:
| Geometry | Cov ntsiab lus tiv tauj | Tactile ratio | Zoo tshaj rau |
|---|---|---|---|
| Round / Circular | 1 center + rim | 35–50% | Round keycaps, chaw taws teeb tswj, lub hom phiaj dav dav |
| Plaub- ceg / Hla | 4 ceg + center | 40–55% | Square / rectangular tuav, tsheb, siab stability |
| Daim duab peb sab / Daim duab peb sab | 3 fab + center | 50–60% | Kev lag luam dig muag, kev kho mob, hwm zoo |
| Oval / Oblong | 2 kawg + center | 35–45% | Wide/oblong keycaps, khoom vaj huam sib luag |
| Solder / Los ntawm -Qhov | 2 leads (soldered) | 40–50% | High -kev co, ncaj qha PCB mount |
7. Ib puag ncig thiab hluav taws xob Specifications
Kev khiav hauj lwm qhov kub thiab txias
Txheem stainless hlau hlau domes khiav lag luam ntseeg tau los ntawm -40℃rau +85℃. Rau hauv qab - hood automotive daim ntawv thov yuav tsum tau +125 degree, qhia cov khoom kub kub thiab plating. Ntawm qhov kub thiab txias, nco ntsoov tias:
- Actuation force txo los ntawm kwv yees li 5-10% ntawm +85℃piv rau chav tsev kub
- Actuation quab yuam nce li ntawm 5-10% ntawm -40 degree
- Tactile ratio tseem nyob ruaj khov ntawm qhov kub thiab txias
- Adhesive tape (for dome arrays) may soften at high temperatures, causing dome misalignment - specify high-temperature adhesive (e.g., 3M 9077 or equivalent) for >85℃kev siv
Kev ntsuas hluav taws xob
- Rated voltage12V DC (tus qauv), mus txog 24V DC (nrog rau qhov sib txawv ntawm qhov tsim nyog)
- Rated tam sim no10mA-50mA (theem teeb liab). Hlau domes tsis yog npaj rau kev siv fais fab hloov
- Rwb thaiv tsev tsis kam: Ntau dua lossis sib npaug rau 100MΩ ntawm 100V DC (tsis ua haujlwm)
- Dielectric zog: 250V AC rau 1 feeb (nruab nrab ntawm kev sib cuag)
- Thawb lub sijhawm: Tsawg dua los yog sib npaug rau 5ms (tus qauv), Tsawg dua los yog sib npaug rau 10ms (siab tshaj) - tseem ceeb rau kev tsim tawm Circuit Court
Environmental Compliance
- RoHS: Tag nrho cov ntaub ntawv thiab plating yuav tsum tau raws li RoHS (tsis muaj txhuas, mercury, cadmium, hexavalent chromium, PBB, PBDE)
- REACH: SVHC (Cov Khoom Muaj Kev Nyuaj Siab Heev) tshaj tawm xav tau rau EU kev lag luam nkag
- Halogen{0}}dawb: Muaj raws li kev thov rau daim ntawv thov uas xav tau halogen- cov ntaub ntawv dawb
- TIAB SA 16949: Yuav tsum muaj rau daim ntawv thov tsheb - txheeb xyuas daim ntawv pov thawj npog qhov chaw tsim khoom tshwj xeeb
- ISO 13485 Kev Tswj Xyuas Kev Lag Luam: Yuav tsum muaj rau daim ntawv thov kev kho mob
8. Specification Kev txiav txim siab Matrix thiab cov kauj ruam tom ntej
Siv qhov kev txiav txim siab matrix kom sai sai txiav txim siab qhov tsim nyog hlau dome specification rau koj daim ntawv thov:
| Yog tias koj qhov tseem ceeb yog ... | Xaiv... |
|---|---|
| Tus nqi qis tshaj | Round dome, SUS301, Ni-plated, 100k voj voog, 0.05-0.06mm |
| Hwm nyem xav | Daim duab peb sab dome, SUS301, Au-plated, tactile ratio Ntau dua los yog sib npaug rau 50%, quab yuam txheeb ± 10% |
| Lub neej ntev tshaj plaws (1M + cycles) | Plaub- ceg dome, SUS301 nyuaj temper, Au-plated, 0.06–0.08mm, centre actuation |
| High vibration ib puag ncig | Solder -hom domenrog los ntawm- qhov ua ntej, Au-plated |
| Corrosive / humid ib puag ncig | SUS316 khoom, Au-plated (0.1µm), kaw dome array nrog silicone overmold |
| Multi-key vaj huam sib luag (20+ yuam sij) | Ua ntej- sib dhosdome daim ntawv arrayntawm PET / PI substrate, 100% kev soj ntsuam txuas ntxiv |
| Automotive kev tsim nyog | IATF 16949 certified tsum, PPAP Qib 3, IMDS xa, -40℃rau +85℃kuaj |
Thaum koj tau txiav txim siab koj thawj qhov tshwj xeeb, cov kauj ruam tom ntej yog thov cov qauv rau kev ntsuas tus qauv. Ib tug tsim nyoghlau dome manufacturersyuav tsum muab cov qauv dawb lossis qis dua - tus nqi kuaj hauv 5-7 hnub ua haujlwm, nrog rau cov ntawv qhia ntxaws ntxaws thiab cov ntaub ntawv pov thawj. Ib txwm siv tau cov qauv ntawm koj lub PCB tiag tiag thiab tsim vaj tsev, raws li kev mus ncig ntawm keycap, roj hmab overmold nruj, thiab PCB ncoo tiav tag nrho tuaj yeem cuam tshuam qhov kev xav thiab kev ua tau zoo ntawm lub dome hauv koj daim ntawv thov.
