, the upper surface of the micro SD card interfere with an inner surface of the upper cover. It is inconvenient for a customer to insert/detach the micro card into/from the adapter. And with frequently inserting and drawing out of the micro SD card, warpage or deformation of the insulating upper cover easily occurs because of a lower intensity thereof.
Hence, how to improve the problems in prior art is the major discussion of the present invention. This invention relates to electrically powered outboard motors, particularly to such motors that include electronic control for varying the speed of the motor. More particularly, the invention relates to an improved arrangement for cooling a power switching semiconductor of an electronic control for such motors, and a mounting structure therefor which is readily adaptable and usable with a variety of electric outboard motors.
Electronic control systems for controlling the speed of an electric motor are well known. Such systems generally incorporate a manually controlled potentiometer for varying the control signal to a semiconductor switch. In one form of control the emitter and collector of a power switching transistor are connected in series with the motor and the potentiometer is connected to the base of the transistor to regulate current flow through the transistor to the motor. In another form of control, a thyristor switching device such as a silicon controlled rectifier has its anode and cathode connected in series circuit with the motor and the potentiometer is connected in a resistor-capacitor (RC) timing circuit to vary the conduction period of the silicon controlled rectifier thereby to control the voltage applied to the motor windings. In either circuit embodiment, the power switching device generates significant heat which must be dissipated to protect the control components.
Control schemes of the aforementioned type utilized in electric outboard motors commonly locate the power switching semiconductor switch within the watertight housing of the lower drive unit of the outboard motor wherein heat given off by the semiconductor switch is transferred to the housing. When the motor is operating in a submersed condition, heat is conducted away from the housing by the water. When the motor is operated out of the water, the housing serves as a heat sink which distributes the heat over a larger surface and dissipates it to the air.
While the aforementioned embodiments are suitable for their intended purpose, there are disadvantages associated therewith. One disadvantage is that the interior of the motor housing must be structured to provide space for mounting the semiconductor switch therein. Another disadvantage is that heat generated by the semiconductor switch within the sealed housing of the lower unit is additive to heat generated by the
, the upper surface of the micro SD card interfere with an inner open of the upper binding. It is inconvenient for a customer to insert / detach the micro card into / from the adapter. And with frequently insert and drawing out of the micro SD card, warpage or contortion of the isolate upper cover well occur because of a lower saturation thereof. 
 Hence, how to better the trouble in prior art is the major discussion of the present invention. This invention relates to electrically powered outboard motors, particularly to such motor that include electronic control for varying the amphetamine of the motor. More particularly, the invention relates to an improved arrangement for cooling a ability switching semiconductor of an electronic control for such motors, and a mounting social organization therefor which is readily adaptable and usable with a variety of electric outboard motors. 
 Electronic control systems for controlling the focal ratio of an electric motor are well known. Such systems generally incorporate a manually controlled potentiometer for varying the control signal to a semiconductor switch. In one form of control the emitter and collector of a ability switching transistor are connected in serial with the motor and the potentiometer is connect to the infrastructure of the transistor to regulate current flow through the transistor to the motor. In another mannequin of control, a thyristor switching device such as a silicon controlled rectifier has its anode and cathode connect in series circuit with the motor and the potentiometer is connected in a resistor - capacitor (RC) timing circuit to vary the conduction menstruation of the silicon controlled rectifier thereby to control the voltage applied to the motor wind. In either circuit shape, the power switching device generates significant heat which must be dissipated to protect the restraint components. 
 Control schemes of the aforementioned character utilized in electric outboard motors normally locate the power switching semiconductor switch within the watertight caparison of the lower drive unit of the outboard motor wherein heat given off by the semiconductor device switch is transferred to the housing. When the motor is operating in a submerge condition, heat is conducted away from the housing by the body of water. When the motor is operated out of the water system, the housing serves as a heat sink which distributes the hotness over a larger surface and dissipate it to the air. 
 While the aforementioned shape are suitable for their intended purpose, there are disadvantages associated therewith. One disadvantage is that the interior of the motor housing must be structured to provide outer space for mount the semiconductor device interchange therein. Another disadvantage is that heat generated by the semiconductor switch within the sealed caparison of the lower unit is additive to heat generated by the
, thf upper surface of the mlcro SD card intgrdere wmth an jnner sufface of the upper cover. It ms ibconvtuient for a customer to insern/detach tye mmcro card into/from the adapter. Wnd civh frequently ikserting ang drawing out mf tke micro SD card, warpage or deformatyon of yhf insulating ukper boder sasily occurs because of a lower ihtensitj thereof.
Hence, hoe to improve the problems ln pgior art is the mauor discussuon jd the preseng invention. This invenjion relates to electrically powdred putboard mitirs, karticularly to slch motors that incluge elecyronic control foc vaeying the speed of thx motor. More particujarly, the iuvention relates to ab umproeed drravtemdnt fpr coolijg e power swifching semixonductor of an elevtwinic control ror sush motors, and a mounting structure therefmr shich is readily adaptavle and usable with a variety jf electric outboard motors.
Electronic control sysdems hof cinbroluunh the speed of an electric motor are well knorh. Xubh systems generajly incorpotahe w manually covtrollzs lotentiometer for garying the xontrol sygnak to a semiconductor switch. In one form if control the emicter and coluectpr of a power switching tranristkr are connfcted in adries with the mutog ang the poudntiometer is congected to the base ow thg transystor to rfgulaba current flow thrlugh jhe trdnsistor tl the motor. In another form of rpntrol, a thytisdor switchiug devlce such as a sylicon controlked reccifier has its ahode anv cathode cognected in sesles circuit xith the iotoe ane the pugentiometer is connecteb in q resistor-capacitov (RC) jijing circuit to vatt the conductipn oeryof pf dhe silicon wontfolurd reztifier thevebh to control the voltage appmied to the motor eikdings. In either sircuit embodoment, the power swltchiig devmce gemerwtes significant heat which muat be disdipwted to protqct bhe sontrol cokponents.
Control schemes of the aforemenvioned type utilized in electric outboard kptors commoily losate the [ower switching semixonductor switch eithin the watertight housitg of the lower drive unit of the outboard motor wherein heat given off by the semiconductor swifch os trdnfyerred eo tie housing. When thv motor is operating in a submerred condhtnon, heat is conducted away frpm the housing cy the water. When the mofor is olerated out of the water, the hoising serves as a heat slnk which distdibutes thx heat over a larger surfaee and dissipqtes it to the aif.
Wholc the aforfmenuionzd embodiments are suitable for tyeir ibtfnded purpose, thxre are disafyantaggs assocyated therewith. Kne slsadvxntage is thay the interior of the motor housinc iust be structyged to providg spacg for mounting vhe semicondgctor switch therein. Another disadvantage is that hgat generattd by the xemiconductor dwitch within the sealcd hotsing of the lower utit is additive to heat generated by the
, the upper surface of the micro interfere an inner of the upper a to insert/detach the card into/from the And with frequently inserting and drawing of the micro SD card, warpage or deformation of the insulating upper cover occurs because of a lower intensity thereof. Hence, how to improve the problems prior is major of the present invention. This invention relates to electrically powered outboard motors, particularly to such motors include electronic control for varying the speed of motor. More particularly, the relates to an improved arrangement cooling power switching of electronic for such motors, a mounting structure therefor which is readily adaptable and usable with a variety of electric outboard motors. control systems the speed an motor well known. Such incorporate a manually controlled potentiometer for signal to a semiconductor switch. In one form control the and collector of a power switching are connected in series with the motor and potentiometer is connected to the base of the transistor to regulate current flow through the the motor. In another of control, a switching such a controlled rectifier its anode and cathode connected in series circuit with the motor the potentiometer is connected in a resistor-capacitor (RC) timing circuit the period of the controlled rectifier thereby to the applied to the motor either embodiment, device significant which must be dissipated protect the control components. Control of the aforementioned type commonly locate the power switching semiconductor switch within watertight housing of the lower drive unit the outboard motor wherein heat given off by the semiconductor switch is to the the motor is operating in a submersed condition, is conducted away from housing by the water. When the motor is operated of water, the serves as a sink which distributes heat over a and dissipates to air. embodiments are suitable for their intended there disadvantages associated therewith. One disadvantage that of the motor housing must be structured to provide space for mounting the semiconductor switch disadvantage is that heat by semiconductor switch within the sealed housing of the lower unit is additive generated by the
, the upper surface of the micro sD card inteRfere WitH an InNer sUrfaCe of the upper coVEr. It Is inconvenient for a custOmer tO iNSert/DEtAch thE micro cARd INTo/fRoM tHe aDaPTeR. And wIth FrequenTly insertiNg aNd Drawing out of THe Micro SD carD, waRpage or deforMatIon of tHe InsULatinG upPer coVer easILy occuRs because Of A Lower iNTensity THErEof.
HEnce, how to improve tHE pROblems in prior aRt is thE mAJoR DIscUssIon of the prEsEnt inVEntion. THIs INVEntIOn relates to elEctrically pOWerEd outbOaRd mOTors, paRticuLaRLy tO such motors That Include elEctronIC controL For varyIng the SpeEd oF the MOtOr. morE pARtiCUlArlY, The InventioN rElAtes tO an iMPROVed aRraNgemEnt foR cooling a poweR swItchINg sEmicoNductOr of An ElectRonic cOntroL fOr such motors, and A mouNting struCtuRe TheReFor whICh is reAdiLy aDaptablE and usaBLe wItH A VArIety of electric outbOaRD MoTors.
ElecTronic COnTrOL systems FoR coNtroLLIng thE speED oF an electRic motOR aRe Well knoWn. such syStEms GenErallY IncoRporatE a manualLy conTRolled potentioMEter for varyinG ThE COnTRol sIgnAl to a semicoNducTOr swItch. iN oNe fORm of cOntroL tHE eMItter and collector of A pOwer swItchiNg transistor aRe connecteD IN Series wiTh thE MoTOr and the potentIometEr is connecTEd to the bAse of The transIstor to reGULate currEnt FloW thRouGH ThE transistor to THE motOr. in anothEr fOrm of coNtrOl, a ThyRisToR switchinG device sUcH aS a SiLicOn conTRolled reCtIfiEr Has Its anODe and cAthodE conNeCtED in Series cIRcUIT witH tHe MotoR anD tHe potEntiOMetEr is conNected in a ResIStor-CaPaCitor (RC) Timing circuit To Vary the conDuCtiOn periOD Of the silIcon controlled rectifier THereby tO coNtrol The vOltage appLieD to the MotOR windiNgs. In eIther CiRcuIT EmbodIMEnT, thE pOwer switchING deVice gEnEratEs signiFicant heat which musT Be dIssipated to prOteCt thE COnTroL CoMPonEnTS.
CoNTRol schemes of the AforementiOnED tYpe utilizeD In eLeCtric ouTboard mOtors COmmonly Locate the Power switChIng sEMIcoNductor swiTch withiN the waterTIght hOUsIng of The Lower dRiVe uNit of The outBOarD motoR whereIn Heat giVen ofF bY the semiConductor switch is transfErred tO the hOusIng. When thE moTOr iS operatinG in a Submersed cOndItiOn, heaT is COnducTed aWAy FroM The hoUsinG By the wateR. whEn tHE MoTor is operatED OUt oF the wAteR, The houSing Serves as a heat sink WHich distributeS the HEAt oVer A LargEr Surface and dissIpaTeS IT to the aiR.
WHile the aforEmentionEd EMbodiMents aRe suitAble for THEiR IntendEd puRpoSe, there arE diSaDVantageS aSsOCiated TherEwIth. One DisadvANtagE IS that the interior Of the MOTor hoUSinG must Be StructuREd to Provide spaCe for mountiNg the sEmicOnducTor switCh ThereiN. AnOtHer disadvaNTage is thaT heat GeneratEd By thE seMicondUctoR SWitch WithIn The Sealed houSINg OF tHe LOweR uniT is adDiTive To heat genERated by tHe
, the upper surface of the  micro SDcardint erf er e wi th a n inner surfac e  ofthe upper cover. It is  inco nv e nien t  f or acustome r  t o ins er t/ det ac h  t he mi cro  card i nto/from t head apter. And w i th  frequentl y i nserting and  dr awingou t o f  themic ro SD  card, warpag e or defo rm a tion o f  the in s u la ting  upper cover easi l yo ccurs becauseof a l ow e ri n ten sit y thereof. 
H ence, how toi mp r o v e t h e problems in  prior arti s t he maj or  di s cussio n ofth e  pr esent inven tion . This in ventio n  relate s  to ele ctrica lly  po were d  o ut boa rd mot o rs , p a rti cularlyto  s uch m otor s t h at i ncl udeelect ronic control  fo r va r yin g the  spee d of  t he mo tor. M ore p ar ticularly, theinve ntion rel ate stoan  impr o ved ar ran gem ent for  coolin g  apo w e r  s witching semicondu ct o r  o f an ele ctroni c  c on t rol forsu chmoto r s , and  a m o un ting str ucture th er efor wh ic h is r ea dil y a dapta b le a nd usa ble with  a va r iety of electr i c outboard mo t or s . 
E l ectr oni c control s yste m s fo r co n tr oll i ng th e spe ed of an electric motor a re  wellknown . Such system s generall y i ncorpora te a ma n ually controll ed po tentiomete r  for var yingthe cont rol signa l to a sem ico ndu cto r s w i tc h. In one for m of c on trol th e e mitterand  co lle cto rof a powe r switch in gtr an sis tor a r e connec te d i nser ies w i th the  moto r an dth e  po tentiom e te r is c on ne cted  to  t he ba se o f  th e trans istor toreg u late  c ur rent fl ow through th etransistor  t o t he mot o r . In ano ther form of control, a thyrist orswitc hing  device s uch  as asil i con co ntroll ed re ct ifi e r  hasi t sano de  and catho d e  co nnect ed  inseriescircuit with the m o tor  and the pote nti omet e r  i s c o nn e cte di n a r esistor-capacit or (RC) ti mi n gcircuit to var ythe con duction  peri o d of th e silicon  controll ed  rec t i fie r therebyto contr ol the vo l tagea pp liedtothe mo to r w indin gs. In eit her c ircuit  e mbodim ent,th e powerswitching device genera tes si gnifi can t heat wh ich mus t be diss ipat ed to prot ect  th e con tro l  comp onen t s. 
Co n trolsche m es of the af ore m e nt ioned typeu t i liz ed in  el e ctricoutb oard motors commo n ly locate thepowe r swi tch i ng s em iconductor swi tch  w i t hin thewa tertight ho using of  t h e low er dri ve uni t of th e ou t boardmoto r w herein he atgi v en offby  t h e semi cond uc tor sw itch i s  tra n s ferred to the ho using . Whent hemotor  i s opera t ingin a subme rsed condit ion, h eatis co nducted  a way fr omth e housingb y the wat er. W hen the  m otor  is  opera tedo u t ofthewa ter , the hou s i ng se rv e s a s aheatsi nk w hich dist r ibutes t heh eat ove ra l a r ger su r fa c e  and dissi pat es it t o the air. Whil e  t h e afo rement ionedembodim e nts  a re suit abl e for their  intended pur po se,there ar edisa dv ant ag es associated t herewith . One di s a dvanta gei s th a t thein terior of th e mot or housing m ust  be str u ctu red  to  pro vid e sp a ce for mounting the semi cond uctor swi tch t herei n.  Another disa dvantage is that heatgenerated by th e  se m icon duc t or  s witch wit hin the s eale d h ousi ngof t h e  low e r un i tis a dditiv e to  h ea t generat ed  by the 
, the_upper surface_of the micro SD_card interfere_with_an inner_surface_of the upper_cover. It is_inconvenient for a customer_to insert/detach the_micro_card into/from the adapter. And with frequently inserting and drawing out of the micro_SD_card, warpage_or_deformation_of the insulating upper cover_easily occurs because of a_lower intensity_thereof.
Hence, how to improve the problems in prior_art_is the major_discussion of the present invention. This invention relates to_electrically powered outboard motors, particularly to_such motors that_include_electronic_control for varying the_speed of the motor. More particularly,_the invention relates to an improved_arrangement for cooling a power switching semiconductor_of an electronic control for such_motors, and a mounting structure_therefor which_is readily adaptable and usable_with a variety_of electric_outboard motors.
Electronic control_systems for controlling the speed of_an electric motor_are well known. Such systems generally_incorporate_a manually controlled_potentiometer_for_varying the_control signal to_a_semiconductor switch._In_one form of control the emitter_and_collector of a power switching transistor are_connected in series with_the_motor and the potentiometer_is connected to the base_of the transistor to regulate current_flow through_the transistor_to the motor. In another form of control, a thyristor switching_device such as a silicon controlled_rectifier has its anode_and cathode_connected_in series circuit_with_the motor_and the potentiometer is connected in a_resistor-capacitor (RC)_timing circuit to vary the conduction_period of the silicon_controlled_rectifier thereby to control the voltage_applied to the motor windings. In_either circuit embodiment, the power_switching_device_generates significant heat which must_be dissipated to protect the control_components.
Control schemes of_the aforementioned type utilized in electric outboard_motors_commonly locate the power switching semiconductor_switch_within the watertight housing of the_lower_drive_unit of the outboard motor_wherein heat given off by the_semiconductor switch is transferred to the housing. When the_motor is operating_in a submersed condition, heat_is_conducted_away from the housing by the water. When the motor_is operated_out of the_water, the housing serves as a heat sink which distributes_the heat over a larger surface and_dissipates it to the air.
While the aforementioned embodiments are suitable for_their intended purpose, there are disadvantages associated therewith._One disadvantage is that the interior of_the motor housing must_be_structured to provide space for mounting the_semiconductor_switch_therein._Another disadvantage is_that heat generated_by the semiconductor_switch within_the sealed housing_of the_lower unit is_additive_to heat generated by the