Gwaro reKusarudza PCB Standoffs uye Spacers

Kumira kwePCB imbiru diki, inowanzo shinda, inobata bhodhi redunhu kubva pamusoro kana pane rimwe bhodhi, ichipa rutsigiro rwemakanika, kuvhura, uye kazhinji kubatana kwemagetsi pasi. Ndiyo imwe yenzvimbo dzisingatariswe zvakanyanya mudhizaini, asi zvinhu zvisiri izvo, shinda, kana mhando inokonzera mapfupi, mabhodhi asina kusimba, uye misoro yekubatanidza. Gwaro iri rinotsanangura musiyano uripo pakati pePCB standoff nespacer, masarudzo echinhu neshinda, mhando huru nemagadzirirwo, uye magadzirirwo egomba rekukwirisa kuitira kuti hardware ishande zvakavimbika.

Kumirana vs Spacers: Chii Chinosiyana?

Mashoko maviri aya anowanzo shandiswa zvisina kurongeka, asi anotsanangura zvikamu zvakasiyana, uye musiyano unokosha kana ukanyatsotsanangura hardware.

• Kurwisana inowanzo shinda, mukati, kunze, kana zvese zviri zviviri, saka sikuruu kana imwe standoff inosunga zvakananga pairi. Zvose zvinoparadzanisa zvikamu uye zvinopa nzvimbo yekubatanidza.
• Chinopatsanura chivharo chisina shinda kana chubhu. Skuruu inopfuura nepakati payo ichipinda muburi rine shinda kana nati riri kure; chivharo chinongoisa mukaha chete.

Mukuita, tambo yekumira ine shinda inoita kuti chibatiso chive chakachena uye chakachengeteka nekuti chinopa nzvimbo yayo yekubatisa, nepo spacer iri nyore uye yakachipa kana bhaudhi refu ratoita chibatiso. Sarudza zvichienderana nekuti murwi unobatanidzwa sei, wobva wasarudza chinhu neshinda zvinoenderana.

Zvinhu uye Nguva Yokushandisa Chimwe Nechimwe

Chinhu ndicho chisarudzo chakakosha nekuti ndicho chinosarudza kana kumira kwacho kuchidzivirira kana kufambisa, kuti kwakasimba sei, uye kuti kunobata sei kupisa. Tafura inopfupikisa sarudzo dzakajairika.

Mutemo uri nyore

Kana nzvimbo yekumira iri pedyo nematrace kana mapedhi uye usingade kubatana nemagetsi, shandisa nylon, iyo inodzivira kupisa inodzivirira mashoti mapfupi. Shandisa simbi yekumira kana uchida kudzika bhodhi pachassis, kutakura kupisa, kana kutora mutoro wemakanika. Brass ndiyo sarudzo inowanzoitwa yekufambisa; aruminiyamu inowedzera nzira yekupisa; simbi uye stainless zvinowedzera simba uye kugara kwenguva refu. Kune mabhodhi anoda kupisa zvakanyanya, nzvimbo dzekumira dzekufambisa dzinowanzo shandiswa mukugadzirisa kupisa dzinosanganisirawo substrate, sezvakaita simbi-core assembly.

Saizi dzeThread uye Maitiro

Tambo yacho inofanira kuenderana nesikuruu uye chero divi rekusangana naro, saka zvakakodzera kuigadzirisa nemazvo.

M3 ndiyo nzira inonzwisisika yekushandisa mabhodhi mazhinji: inowanikwa zvakanyanya, yakasimba zvakakwana kuti ikwanise kurema, uye inoenderana nemhando dzakasiyana dzemasikuruu nema standoffs. Isa paM2 kana M2.5 pamabhodhi madiki kana akazara, uye isa paM4 kana M5 pamagungano anorema. Kana purojekiti yako ichitevera maitiro eumambo, #4-40 na #6-32 ndizvo zvakafanana. Chero chaunosarudza, chichengetedze chakafanana pamusangano wese kuitira kuti sikuruu imwe chete nehukuru hwesikuruu imwe chete zvishande pakuvaka kwese.

Mhando uye Magadzirirwo

Kupfuura zvinhu neshinda, mativi anouya mumhando dzakasiyana-siyana uye magadzirirwo ekupedzisira.

Chimiro nemagumo

• Muviri weHex vs denderedzwa: hex bodies dzinoita kuti chipanera chibate kuti chisimbiswe; denderedzwa bodies dzakaita sedzakaderera.
• Murume mukadzi: simbi ine shinda kune rumwe rutivi, buri rine shinda kune rumwe rutivi, rakanakira kurongedza.
• Mukadzi-mukadzi: maburi ane shinda kumativi ese, akasungirirwa nezvikushi kubva kumativi ese.
• Murume-murume: mapuranga ari kumativi ese, akasungirirwa nenzungu.

Maitiro ekuisa

• Kupinda nechisimba / kusundidzira mukati Nzvimbo dzekumira dzinochekwa mugomba risina maturusi, izvo zvinowanzo shandiswa kukurumidza kuungana.
• Kuzvifadza simbi dzinosungirirwa zvachose mubhodhi kana chassis kuti pave nechisungo chinobatirira.
• Kuvhara zvinhu zvinoramba kusunungura kana zvichidedera.
• Kumira kweSMT (SMT) zvinoiswa uye zvinodzokororwa pamwe chete nezvimwe zvikamu zvekuisa pamusoro, saka hardware yekuisa inowedzerwa panguva Pcb gungano pane kuita danho rakasiyana.

Enzanisa magadzirirwo acho nemaitiro emabhodhi uye mavakirwo anoitwa chigadzirwa. Kurwisana kwevarume nevakadzi ndiko kunonyanya kushanda pakubatanidza mabhodhi; mhando dzekubatanidza mabhodhi neSMT dzinoderedza basa rekubatanidza nemaoko, izvo zvinonyanya kukosha kana bhodhi rakawanda richinge rakagadzirwa nePCB.

Kugadzira Hole Yekukwira

Kumira kunoshanda chete kana gomba rebhodhi rakagadzirirwa izvozvo. Zvinhu zvakawanda zvinokosha.

Saizi, nzvimbo yekubvisa zvinhu, uye kuchengetedza zvinhu

Buri rinofanira kukodzera sikuruu kana stud nepaburi rakakodzera, uye nzvimbo yekudzivirira yemhangura nechinhu chakakomberedza inodzivirira musoro wesikuruu, muchina wekuwachisa, kana muviri wekudzivirira kubva pakupfupika kana kupwanya zvikamu zviri pedyo. Kusiya nzvimbo yakakwana yekuchengetedza inyaya inowanzo kanganiswa, uye ndizvo chaizvo zvinoonekwa neDFM vasati vagadzira.

Maburi akaputirwa vs asina kuputirwa

Sarudzo iyi inobatanidza zvakananga negrounding. Buri rekuisira rakabatanidzwa pasi, rinoshandiswa nesimbi inomira nesikuruu, rinosunga bhodhi kune chassis yegrounding uye EMI control. Buri risina plate rinoparadzanisa mounting nemagetsi, raunoda kana uchishandisa nylon hardware kana kana mounting ichifanira kuyangarara. Sarudza basa remagetsi renzvimbo yega yega yekuisira, wobva watsanangura buri racho, uye yeuka kuti plating uye buri remhando zvinoenderana nePCB.

Kureba kweStandoff uye Nzvimbo yeBhodhi

Kureba kwebhodhi kunoratidza musiyano uripo pakati pebhodhi nechero rainosungirirwa. Kusarudza zvakanaka kunoita kuti pave nenzvimbo yekuisa zvinhu pamwe nemhepo pasina kutambisa nzvimbo.

Izvo kukwirira kunofanira kubviswa

• Zvikamu zvirefu kwazvo pasi pebhodhi.
• Chero zvinobatanidza, zvinopisa, kana hardware zvinobuda.
• Nzvimbo yemhepo inoyerera apo kupisa kunofanira kubuda.

Yera chitarisiko chakareba kwazvo chinofanira kubviswa, wedzera muganho, uye sarudza nzvimbo yekumira yakareba zvishoma kudaro. Pamabhodhi akarongwa, kukwirira kunoisawo nzvimbo pakati pemabhodhi ari mudura, izvo zvinokanganisa kubatana kwekubatanidza nekutonhodza, chinhu chakakosha pakugadzira PCB. Kana kupisa kuri dambudziko, nzvimbo yakakura inozadzisa substrate inoziva kupisa senge simbi-core construction.

Kuungana, Torque, uye Washers

Kunyangwe michina chaiyo ikatadza kushanda kana isina kugadzirwa zvakanaka. Pane zvinhu zvishoma zvinobatsira zvinoita kuti pave neruzha rwemajoini.

• Torque kusvika padanho rakakodzera. Kusunga zvakanyanya, kunyanya mumabhodhi enylon kana matete, kunobvisa shinda kana kutsemura laminate; kusimbisa zvishoma kunoita kuti bhodhi rishande zvakasununguka kana richidedera.
• Shandisa mawashers kana zvakakodzera. Muchina wekuwachisa wakatsetseka unoparadzira mutoro; muchina wekuwachisa wepafudzi kana wenaironi unogona kuchengetedza bhodhi kana kuchengetedza rakaparadzaniswa.
• Funga nezvekudengenyeka. Mumidziyo inozununguka, zvinhu zvinovhara tambo kana kuti zvinosunga tambo zvinochengetedza zvisungo zvakasimba.
• Dzivirira mhangura pedyo nemidziyo. Iva nechokwadi chekuti chinovhara simbi pamwe chete nechero mawasher zvinodzivirira simbi kuti isabatane netsvina yaisingafanire kubata.

Kune mabhodhi ane magetsi kana kupisa kwakakosha, michina yemagetsi uye nzira yekupisa nepasi zvinoshanda pamwe chete, nzvimbo iyo ruzivo rwekugadzira magetsi emagetsi runobatsira kuita zvese zvakanaka.

Rondedzero Yekusarudza Nokukurumidza

Mhanya nemibvunzo iyi kuti usvike padanho rakakodzera:

• Kudzivirira kana mufambiro? Nyoni yekuputira, simbi yekukuya kana kutakura kupisa.
• shinda yei? M3 kana zvangoitika; diki pamabhodhi akazara vanhu, hombe pamatafura anorema.
• Magadzirirwo api? Murume nemukadzi pamatanda, mukadzi nemukadzi kana murume nemurume zvichienderana nezvinodiwa nekubatanidza.
• Inoiswa sei? Yakarukwa, yakasungirirwa, inozvibatanidza yoga, kana kuti yakasungirirwa pamusoro pechinhu kuti ikwane kuvakwa kwako.
• Buri racho rakarurama here? Saizi chaiyo, nzvimbo yakavharwa, nzvimbo inochengetedzwa, uye isina kuputirwa kuti ienderane nebasa remagetsi.

Nzvimbo dzekumisa simbi diki, asi kusarudza zvinhu zvakakodzera, shinda, mhando, uye gomba rekuisira simbi zvinovaita kuti zvive hwaro hwemagetsi nehwemakanika hwakavimbika hwebhodhi rako. Wana sarudzo dzekuchengetedza nekuputira simbi panguva chaiyo yekugadzira uye simbi dzinofamba zvakanaka. Unogona kuverenga zvakawanda nezveHighleap Electronics uye masevhisi edu ekugadzira nekumisikidza simbi.

Mibvunzo Inonyanya Kubvunzwa

Ndeupi musiyano uripo pakati pechinhu chinomira nechinhu chinoparadzanisa zvinhu?

Nzvimbo yekumira inowanzo shandiswa shinda, ichipa nzvimbo yayo yekunamatira, nepo nzvimbo yekumira iri shinda isina shinda iyo sikuruu inopfuura nepakati payo ichipinda mushinda kana nati iri mberi kwayo. Nzvimbo yekumira inoita kuti pave nekusimba kwakasimba; nzvimbo yekumira iri nyore kana bhaudhi refu ratosunga tambo yacho.

Ndinofanira kushandisa nylon kana simbi dzakamira here?

Shandisa nayiloni kana nzvimbo yekumira iri pedyo nemhangura uye uchida kudzivirira kubatana kwemagetsi, sezvo ichidzivirira kupisa uye ichidzivirira mabhurugwa mapfupi. Shandisa simbi (yemhangura, aruminiyamu, simbi, kana isina ngura) kana uchida kupwanya bhodhi pachasi, kutakura moto, kana kutora mutoro wemakanika.

Ndeipi saizi yeshinda inonyanya kuwanikwa paPCB standoffs?

M3 ndiyo saizi inonyanya kushandiswa, inowanikwa zvakanyanya uye inoenderana nemasikuruu akawanda uye nzvimbo dzekumira. M2 neM2.5 dzinoenderana nemabhodhi madiki kana akazara, M4 neM5 dzinoenderana nemidziyo inorema, uye #4-40 ne #6-32 ndiwo maekisesaizi akafanana ehumambo.

Buri rangu rekuisira rinofanira kuputirwa here kana kuti kwete?

Shandisa gomba rakasungirirwa pasi rakasungirirwa pasi nesimbi kana uchida kudzika bhodhi pachassis kuti ridzorwe neEMI. Shandisa gomba risina kuvharwa kuti udzikise chibatiso nemagetsi, semuenzaniso ne nylon hardware kana kuti chibatiso chichifanira kuyangarara.

Ndinofanira kugadzira sikuruu yekumira yakasimba zvakadii?

Sungai zvakasimba pa torque yakakodzera yezvinhu nebhodhi. Kusunga zvakanyanya, kunyanya mumabhodhi enylon kana matete, kunogona kubvisa shinda kana kutsemura laminate, ukuwo kusimbisa zvishoma kunoita kuti bhodhi risununguke kana richidedera. Shandisa mawashers kuparadzira mutoro uye, pazvinenge zvichidikanwa, kuchengetedza kuparadzaniswa.

Ko makwikwi anogona kutengeswa pabhodhi here?

Ehe. Nzvimbo dzekumisa pamusoro pechinhu dzinoiswa uye dzinodzoserwa pamwe chete nezvimwe zvikamu zveSMT, saka hardware yekumisikidza inowedzerwa panguva yekubatanidza pane kuiswa nemaoko. Izvi zvinoderedza basa remaoko uye zvinobatsira mukugadzira zvinhu zvakawanda.