200927579 九、發明說明： 【發明所屬之技術領域】 本發明關於-種用於一跨坐型車輛的散熱器蓋及一種具 有該散熱器蓋的跨坐型車輛。更具體地說，本發明關於一 種用於-跨坐型車輛之散熱器蓋，其包含一用於覆蓋一散 • ^器之一罩子的罩蓋及關於-種具有該散熱器蓋的跨坐型 車輛。 【先前技術】 Ο 按照慣例，具有一散熱器格栅（散熱器蓋）的小型車輛（跨 坐型車輛）已被熟知（例如見專利文獻1} ’該散熱器格柵被 附接至該小型車輛。專利文獻1揭示一種具有一散熱器及 一散熱器格栅的小型車輛。該散熱器具有一被配置成面朝 該車輛前方的芯體表面。該散熱器格栅被定位於該散熱器 之刖以便覆蓋該散熱器之一前部。一用於將空氣引導至該 芯體表面的導氣通道在一與該芯體表面相對的部分被界定 於此用於一小型車輛的散熱器格栅中。在與該芯體表面相 © 對的該部分之上的該散熱器格栅之一部分為—壁，其覆蓋 該散熱器之一前部分及一上部分。 [專利文獻1] JP-A-Sho 63-106320 【發明内容】 在專利文獻1所揭示的用於一小型車輛（跨坐型車柄）的 該散熱器格栅（散熱器蓋）中，覆蓋該散熱器之該前部分及 該上部分的該壁在與該芯體表面相對的該部分之上形成該 134214.doc -6 - 200927579 散熱器格柵的該部分。因此，被釋放進該散熱器格栅及該 散熱器之該芯體表面之間之空間中的熱量被困在與該芯體 表面相對的該部分之上的該散熱器格柵的一部分中。所以 此構造係不利的’因為該散熱器之冷卻液不能被充分冷 卻。 - 本發明被做出以解決上述之該問題，且本發明之一目的 • 係提供一種用於一跨坐型車輛之散熱器蓋，其能夠充分冷 部一散熱器之冷卻液及一種具有該散熱器蓋的跨坐型車 ❹ 輛。 根據本發明之一第一態樣，一用於一跨坐型車輛的散熱 器蓋包3 .本體蓋，其係相對於一具有一被配置以面朝該 車輛之一橫向之芯體表面的散熱器而被配置以便覆蓋該芯 體表面之一外側本體蓋；及一罩蓋，其被配置於該本體蓋 之一頂表面上以便覆蓋一被設置於該散熱器之上之一罩 子。該散熱器蓋在鄰近該本體蓋及該罩蓋之間之該邊界處 具有一貫穿孔。該貫穿孔從該散熱器之一侧延伸穿過該散 @ 熱蓋至該罩蓋之一外表面之一側。 如上述，根據該第一態樣之用於一跨坐型車輛的該散熱 器蓋在鄰近該本體蓋及該罩蓋之間之該邊界處具有從該散 熱器之該側延伸至該罩蓋之該外表面之該側的貫穿孔。此 構造允許在該散熱器蓋之該本體蓋及該散熱器之間之空間 中的熱量經由該貫穿孔逸出至外側，藉此防止熱量被困於 該散熱器之該罩子的鄰近處。因此，該散熱器之冷卻液可 被充分冷卻。 134214.doc •7- 200927579 根據本發明之一第二態樣，一跨坐型車輛包含一散熱器 及一用於該散熱器的散熱器蓋，該散熱器具有一被配置以 面朝該車輛之一橫向的芯體表面。該散熱器蓋包含一相對 於該散熱器配置以便覆蓋該芯體表面之一外側的本體蓋， 及一被配置於該本體蓋之一頂表面上以便覆蓋一被設置於 - 該散熱器之上之罩子的罩蓋。該散熱器蓋在鄰近該本體蓋 • 及該罩蓋之間的該邊界處具有一貫穿孔。該貫穿孔從該散 熱器一側延伸穿過該散熱器蓋至該罩蓋之一外表面。 Θ 如上所述，在根據該第二態樣的該跨坐型車輛中，該散 熱器蓋在鄰近該本體蓋及該罩蓋之間的該邊界處具有該貫 穿孔。該貫穿孔從該散熱器之該側延伸穿過該散熱器蓋至 該罩蓋之該外表面。此構造允許在該散熱器蓋之該本體蓋 及該散熱器之間之空間中的熱量經由該貫穿孔逸出，藉此 防止熱量被困於該散熱器之該罩子的鄰近處。因此，該散 熱器之該冷卻液可被充分冷卻。 【實施方式】 ^ 參考該等圖式，本發明之一較佳實施例將在後面被描 述。 圖1為根據本發明之一實施例的機車整個結構之一側視 圖。圖2到圖9為散熱器蓋之構造及根據圖1之該實施例的 機車之該散熱器蓋周圍的說明圖。在本實施例中，一跨坐 型機車將作為根據本發明之一跨坐型車輛之一實例而被描 述。箭頭FWD指示的方向在各個圖中為該機車之—向前方 向。根據本發明之該實施例的機車1之該構造將參考圖！到 134214.doc 200927579 圖9而被詳細描述。 如圖1所示，根據本發明之該實施例的該機車丨之一主框 架3被固定至一頭管2之一下部分。該主框架3從該下部分 向後延伸。該頭管2及該主框架3形成一車體框架。 把手4被可旋轉地附接至該頭管2之一上部分。一前整流 罩5被配置於該頭管2之前以覆蓋該頭管2之一前部分。二 對具有一懸吊機構的前又6被配置於該頭管2之下該懸吊 機構用於吸收垂直震動。一前輪4被可旋轉地附接至該對 前又6之一下部分。一前擋泥板8被配置於該前輪7之上。 一腳踏座9被配置於該主框架3之一中心部分之上。一座 位10被配置於該主框架3之一後部分之上。一引擎丨丨被配 置於該主框架3之該後部分之下。具體而言，一樞軸3&被 6又置於該主框架3之該後部分上。該引擎11用一在該引擎 及該樞軸3a之間的臂構件1 ia附接至該樞轴3a，該臂構件 1 la可在該柩轴3a上樞轉。更具體地說，該引擎丨丨為一單 元擺動式引擎並被構建以便固持一被設置於該引擎Η之一 後部分的後輪28 ’使得該後輪28可繞該樞軸3a擺動，該後 輪將在後面被描述。如圖2所示，該引擎11包含一曲軸箱 12、一被附接至該曲轴箱12之一向前（箭頭FWD所指之該 方向）部分的汽缸13、及一被附接至該汽缸13以便封閉該 汽缸13之一向前（箭頭FWD所指之該方向）開口。 一曲柄軸15被可旋轉地配置於該曲軸箱12中使得該曲柄 轴15朝一車寬度方向（箭頭L及R所指之一方向）延伸。-連 接一被放置於該汽缸13中的活塞16及該曲柄軸15的連桿17 134214.doc -9· 200927579 被附接至該曲柄軸15。一傳動機構18被配置於箭頭l所指 的該側之該曲柄軸15上方。一發電機構19被配置於該箭頭 R所指的該側之該曲柄軸15上。該發電機構19包含一隨該 曲柄軸15旋轉的轉子20。該轉子20被附接至在箭頭r所指 的側之該曲柄轴1 5之一端部分。一隨著該轉子20繞該轉子 • 20之一旋轉轴旋轉的吸氣風扇21被設置於該轉子上。該吸 . 氣風扇21在該曲柄轴15旋轉時隨著該轉子20旋轉，藉此在 箭頭F1指示的方向中主要經由一後空氣入口 26f將空氣引 Ο 入並同時促使該空氣在該吸氣風扇21箭頭F2所指的徑向中 流動，該後空氣入口 26f將在後面被描述。 一由鋁製成的風扇外殼22被附接至在箭頭R所指的該侧 之該曲轴箱12以便覆蓋該吸氣風扇21。一散熱器23被附接 至在箭頭R所指的該側之該風扇外殼22。具體而言，該散 熱器23被配置使得一芯體表面23a面對箭頭R指示的該方向 (該車輛之一橫向），且一在相反於該芯體表面23&之該側的 表面部分23b與該吸氣風扇21相對。因此’該散熱器23被 定位使得該空氣被該吸氣風扇21吸入的該方向（箭頭F1所 指的該方向）大體垂直於該芯體表面23 a。 如圖3及圖4所示’一冷卻液供應單元23c被設置於該芯 體表面23 a上方之該散熱器23上，冷卻液經由該單元23 c被 注入該散熱器23。一具有一非圓形狀的罩子23(1被附接至 該冷卻液供應單元23c。如圖4所示’兩個突出物23e被形 成於該罩子23d上，從該散熱器23之上觀察，每個突出物 朝該罩子23d之一徑向向外突出。 134214.doc 200927579 如圖3及圖4所示，一軟管24之一端被附接至箭頭FWD所 指的該側之該冷卻液供應單元23〇之一部分，該散熱器23 中之冷卻液可經由該軟管24流動。如圖i所示，該軟管24 被配置以便朝箭頭FWD所指的該方向延伸。該軟管24之另 一端被連接至一副水箱25，該副水箱25被設置於該主框架 . 3上之鄰近該腳踏座9處。此構造允許在該散熱器23内的該 -冷卻液即使在被加熱至一較高溫度並因此體積被增大時可 經由該軟管24被傳輸至該副水箱25。如圖5所示，該軟管 〇 24被定位以經由一凹口 26〇延伸出該散熱器蓋26以便被以 一種被一對軟管固持鉗26ρ固持的狀態被引導至該副水箱 25’該凹口被界定於該散熱器蓋16中，其與該等軟管固持 钳26ρ將在後面被描述。 同時，在如圖2及圖4中所顯示的此實施例中，由一種樹 脂製成的該散熱器蓋26被配置於該散熱器23之該芯體表面 23a之箭頭R所指的該側上，以便覆蓋該芯體表面23a之一 外側（箭頭R指示的該側）。該散熱器蓋26係本發明之該 「用於一跨坐型車輛之散熱器蓋」之一實例。如圖3及圖5 所示’四個螺絲釘孔26a被界定於該散熱器蓋26中。該散 熱器蓋26藉由螺絲釘27附接至該風扇外殼22(見圖1)。 在此實施例中，該散熱器蓋26包含一本體蓋26b及一罩 蓋26d。該本體蓋26b覆蓋該散熱器23之該芯體表面23a之 該外側（箭頭R所指之該侧）。該罩蓋26d被配置於該本體蓋 26b之一頂表面26c上以便覆蓋該散熱器23之該罩子23d。 該本體蓋26b具有一前空氣入口 26e、該後空氣入口 26f 134214.doc 200927579 及一底空氣入口 26g。該前空氣入口 26e、該後空氣入口 26f及一底空氣入口 26g被各自形成以便與該散熱器23之該 芯體表面23a相對（見圖4)並具有指向不同方向的開口。 該前空氣入口 26e在一向前（箭頭FWD所指之該方向）側 具有該開口並被形成以便將至少一部分的流動風F3(見圖1 -及圖4)帶入其中。具體而言’該前空氣入口 26e被設置於 .該散熱器蓋26之該前側（箭頭FWD所指之該側 >，使得該前 空氣入口 26e在一朝該向前側（箭頭fwD所指之該側）傾斜 © 的方向中以一相對於該車寬度方向（箭頭L及R指示之該方 向）的預定角度打開（見圖3)。如圖4所示，該前空氣入口 26e被放置以便與該散熱器23之該芯體表面23&之一向前 (箭頭FWD所指之該方向）部分相對，並具有將空氣（該流動 風F3)引導至該芯體表面23a之該向前（箭頭FWD指示之該 方向）部分的功能。 複數個片狀構件（散熱片）26h被設置於與該散熱器蓋26 整合之該前空氣入口 26e上。該複數個片狀構件26h被配置 α便從該前空氣人口 26e之該開σ之—前側傾斜向後及向 上地延伸並且在視作一平面時不彼此重叠。該複數個片狀 構件26h之每一者被形成以具有一相對於該芯體表面23&的 預定傾斜角度。如圖6及圖7所示，該複數個片狀構件 26h(見圖6)之每-者被配置使得該等片狀構件施之該預定 傾斜角度小於該後空氣入口 26f之片狀構件加（見圖7)之一 相對於該芯體表面23a的預定傾斜角度’該等片狀構件加 將在後面被描述。換言之，該前空氣入口2心之該等片狀 1342I4.doc 12 200927579 構件26h(見圖6)被配置使得與經由該後空氣入口 26f之該等 片狀構件26i相較（見圖7)，泥土或類似物較不如此輕易地 經由該等片狀構件26h進入該散熱器蓋26之該内側（箭頭L 所指之該側）。 如圖3及圖5所示’該後空氣入口 26f在相反於該向後（箭 ' 頭FWD所指之該方向）侧之該側上具有該開口，並被形成 . 以便將被該吸氣風扇21(見圖2)吸入的該吸入送風fi(見圖 2)帶入。具體而言，如圖2及圖5所示，該後空氣入口 26f被 ❹ 設置於該散熱器蓋26之該後側以便在一朝相反於向前（箭 頭FWD所指之該方向）側之該側傾斜的方向中以一相對於 該車寬度方向（箭頭L及R指示之該方向）的預定角度打開。 如圖3及圖5所示，該複數個片狀構件（散熱片）26i被設置 於與該散熱器蓋26整合在一起的該後空氣入口 26f中。該 複數個片狀構件26i被配置以便從該後空氣入口 26f之該開 口之一前側傾斜向後及向上地延伸並且在視作一平面時不 彼此重疊。該複數個片狀構件26i(見圖7)之每一者被形成 以具有一相對於該芯體表面23a的預定傾斜角度。如圖6及 圖7所示’該複數個片狀構件26i(見圖7)之每一者被配置使 •得該等片狀構件26i之該預定傾斜角度大於該後空氣入口 26e之片狀構件26h(見圖6)之該相對於該芯體表面23&的預 定傾斜角度。意即該後空氣入口26f之該等片狀構件26丨（見 圖7)被配置使得空氣經由該等片狀構件26丨流進該散熱器蓋 26之該内側（箭頭L所指之該側）比經由該前空氣入口 之 該等片狀構件26h(見圖6)更容易。 134214.doc 13 200927579 如圖1及圖3所示，該底空氣入口 26g具有指向一方向的 該開口，該前空氣入口 26e之下之流動風F4之至少一部分 可沿著該方向被帶入一在該後空氣入口 26f之下的區域。 該底空氣入口 26g被形成以便朝該向前方向（箭頭FWD所指 之該方向）傾斜向下延伸。 如圖8及圖9所示，一空氣引導單元26j被形成於與其整 合在一起之該散熱器蓋26之該後表面側（箭頭L所指之該 侧）上（見圖9)。該空氣引導單元26j被形成以便將經由該底 〇 空氣入口 26g引入的空氣引導至該散熱器23之該芯體表面 23a之一下區域（見圖8)。該空氣引導單元26j被配置於該散 熱器蓋26之該後表面侧（箭頭L所指之該側）（見圖9)以便從 該處突出並包含一後空氣導件26k及一底空氣導件261。該 後空氣導件26k從該底空氣入口 26g之該後端的鄰近處向下 延伸。該底空氣導件261與該後空氣導件26k之一底端連接 並朝該向前方向（箭頭FWD指示之該方向）中傾斜向下延 伸。該後空氣導件26k具有防止已經由該底空氣入口 26g引 V 入的該空氣（該流動空氣F4)(見圖8)向後逸出並同時將該空 氣引導至一與該散熱器23之該下區域中的一向前（箭頭 • FWD指示之該方向）側相對的部分（見圖8)的功能。該底空 - 氣導件261具有防止已經由該底空氣入口 26g引入的該空氣 (該流動空氣F4)(見圖8)向下逸出並同時將該空氣引導至一 與該散熱器23之該下區域中的一向前（箭頭FWD指示之該 方向）側相對的部分（見圖8)的功能。 如圖3及圖5所示，在此實施例中，一側壁26m被設置於 134214.doc -14- 200927579 被形成於該本體蓋26b之該頂表面26c上的該罩蓋26d上， 以便覆蓋該罩子23d之一侧部分》該側壁26m被形成以便從 一該罩子23d之一橫向鄰近處（見圖3)垂直向下延伸至該本 體蓋26b之該頂表面26c。如圖4所示，當從上面觀察時， 該側壁26m向該本體蓋26b之該頂表面26c之一最外側部分 26η之該外側（箭頭R所指之該側）突出。 . 在此實施例中，如圖4及圖8所示，該罩蓋26d之該側壁 26m被構建使得該側壁26m(該罩蓋26d)之該内周表面之一 Φ 内徑D1(見圖8)比該等兩個突出物23e之相反端之間的一距 離D2大’該距離D2為該罩子23d之該外周之一最大外徑。 意即即使當該罩子23d相對於該冷卻液供應單元23c旋轉 時，該罩蓋26d被構建以便不接觸該罩子23d。 在此實施例中，如圖3及圖4所示，該罩蓋26d之該侧壁 26m具有一半圓柱形狀並被構建以便從箭頭R所指之該側 覆蓋該散熱器23之該冷卻液供應單元23c及該罩子23d。如 圖5所示，該半圓形凹口 26〇被界定於該罩蓋26d之該側壁 26m之一前（箭頭FWD所指之該側）部分中。該凹口 26〇藉由 在箭頭L所指之該侧上將該側壁26m切開而界定使得從來 自該向前側（箭頭FWD所指之該側）的流動風F5流進該罩蓋 26d之該内側。即，如圖8所示，該凹口 26〇被提供以促使 該流動風F5衝擊該散熱器23之該冷卻液供應單元23c之鄰 近處，藉此冷卻該冷卻液供應單元23c之該鄰近處。該凹 口 26〇為本發明之該「第一凹口」的一個實例。 如圖5所示，該凹口 26〇被構建以允許該散熱器23之在箭 134214.doc 200927579 頭FWD所指之該側上之該冷卻液供應單元2孔的該軟管24 從該散熱器蓋26之該内側經由該凹口 26〇延伸至該散熱器 蓋26之該外侧。該對軟管固持鉗26p(每個經設置以將該軟 管24引導至箭頭FWD所指之該側）被形成於箭頭FWD所指 相對於該凹口 26〇的該側上之該上表面上，以便向上突 出。該對軟管固持鉗26p被配置以便在一縱向及該橫向（箭 . 頭R&L所指的該方向）上在該等固持鉗之間具有一預定空 隙’並被構件以便約束在該縱向上延伸的該軟管24之一橫 〇 向移動（在箭頭R及L所指之該方向上）。 一半圓形凹口 26q被界定於該散熱器蓋26之該罩蓋26d之 一上表面中以便相應於該散熱器23之該罩子23d之一上表 面。該凹口 26q藉由切開該罩蓋26d之該上表面之箭頭L指 示之該側而界定。該凹口 26q為本發明之該「第二凹口」 之一實例。 在此實施例中，該散熱器蓋26在靠近該本體蓋26b及該 罩蓋26d之間的邊界處具有一貫穿孔26γ 〇該貫穿孔26r•從該 鲁 散熱器23之該側（箭頭L所指之該側）延伸穿過該散熱器蓋 26至該罩蓋26d之該外（箭頭R所指之該側）表面。具體而 言’該貫穿孔26r被界定於該側壁26m及該本體蓋26b之該 . 頂表面26c之邊界中以便在該側壁26m之一圓周方向上延 伸。如圖3所示，該貫穿孔26r在該縱向中的寬度大於該散 熱器23之該冷卻液供應單元23c之一寬度（外徑）。該側壁 26m被垂直定位以相應於該散熱器23之該冷卻液供應單元 23c ° 134214.doc -16· 200927579 如上述，該後輪28被可旋轉地配置於該引擎π之該後部 分。一後擋泥板29被設置於該後輪28上方以便從上覆蓋該 後輪28。此外，一排氣管30被連接至該引擎11 ^該排氣管 3 0被配置以便向後延伸並與一消音器3 1結合。 在此實施例中，如上述，該散熱器蓋26在鄰近該本體蓋 26b及該罩蓋26d之間的該邊界處具有該貫穿孔26r。該貫 .穿孔26r從該散熱器23之該側延伸穿過該散熱器蓋26至該 罩蓋26d之該外表面之該側（該側壁26m之外側）。此構造允 〇 許在該散熱器蓋26之該本體蓋26b及該散熱器23之間之空 間中的熱量經由該貫穿孔26r逸出，藉此防止熱量被困於 該散熱器23之該罩子23d的鄰近處。因此，該散熱器23之 該冷卻液可被充分冷卻。 在此實施例中，如上述，該貫穿孔26ι•被構建為大於該 散熱器23之該罩子23d所附接的該冷卻液供應單元23c之該 寬度，藉此促使一大量的空氣流入該冷卻液供應單元23 c 之該鄰近處。因此，在該散熱器23中該冷卻液供應單元 ® 23c之該鄰近處可被冷卻，因此該散熱器23之該冷卻液可 被更充分地冷卻。 在此實施例中，如上述，該側壁26m被形成以便垂直向 . 下地延伸至該本體蓋26b之該頂表面26c。因此，與該側壁 26m以符合該散熱器23之該罩子23d之該形狀及具有一外徑 大於該罩子23d之外徑的該冷卻液供應單元23c之該形狀的 形狀而被形成的配置相比，在該散熱器23之該冷卻液供應 單元23c及該側壁26m之間可確保一足夠的空隙《這改善熱 134214.doc 200927579 量消散的效率。 在此實施例中，如上述’該貫穿孔26r被界定於該罩蓋 26d之該側壁26m及該本體蓋26b之間的該邊界中。因此’ 在該散熱器蓋26之該本體蓋26b及該散熱器23之間之該空 間中的該熱量在保護該散熱器23之該罩子23d之該鄰近處 的同時被消散至該外側。 在此實施例中’如上述’該凹口 26〇被界定於該罩蓋26d 之該前（箭頭FWD所指之該侧）部分中，藉此促使該流動空 © 氣F5流入該罩蓋26(1之該内侧。這亦允許該散熱器23之該 冷卻液被冷卻。 在此實施例中’如上述，該凹口 26〇被界定使得將被連 接至該散熱器23的該軟管可經由該凹口 26〇延伸出該散熱 器蓋26。因此，該凹口 2 6〇不僅可執行將該流動風F5引導 至該罩蓋26d内側的功能’亦可執行允許該軟管24經由其 延伸的功能。 在此實施例中，如上述’該凹口 26q被界定於該罩蓋26d ® 之該上表面中以便對應該散熱器23之該罩子23d之該上表 面。因此，在該散熱器蓋26之該本體蓋26b及該散熱器23 . 之間的該空間中之該熱量不僅可經由該貫穿孔26r逸出， 亦可經由該凹口 26q逸出。這亦改善熱量消散的效率。 在此實施例中，如上述，該罩蓋26d之該側壁26m之該 内周表面之該内徑D1大於該兩個突出物23e之兩端之間的 該距離D2，該距離D2具有非圓形狀之該罩子234之該外周 的最大外徑。此構造可抑制該罩子23d干擾該罩蓋26d之該 134214.doc -18- 200927579 側壁26m之該内周表面。 在此實施例中，如上述，該貫穿孔26r被界定以便在該 半圓柱形側壁26m之該圓周方向上延伸，藉此幫助在該縱 向及該車寬度方向（箭頭R及L所指之該方向）上延伸的該貫 穿孔26r的貫穿。因此，在該散熱器蓋26之該本體蓋261)及 ' 該散熱器23之間之該空間中的該熱量可經由該貫穿孔26r ^ 被有效排出。 應理解被揭示於此之本發明的該實施例為所有態樣中的 〇 一個示例性實施例，並非用於以任何方式限制本發明之範 圍。本發明之該範圍不被該較佳實施例之該描述限定，而 係被該等技術方案之該範圍限定’並包含與該等技術方案 之該範圍之意義相等的意義及任何在該等技術方案之該範 圍内的修改。 舉例來說，在此實施例中，一跨坐型機車被採用為一包 含一散熱器蓋的跨坐型車輛。然而，本發明並不限於此， 並可被應用於任何其他跨坐型車輛，例如一具有一散熱器 @ 蓋的三輪車輛及全域地形車輛（ATV)。 此實施例已描述以下實例，其中該貫穿孔被界定於在該 本體蓋及該罩蓋之間的該邊界處之該罩蓋中。然而，本發 明不限於此’該貫穿孔可被界定於在該本體蓋及該罩蓋之 間的該邊界處之該本體蓋中。 此實施例已描述以下實例，其中該貫穿孔在該縱向上的 該寬度大於該散熱器之該冷卻液供應單元在該縱向上的該 寬度。然而，本發明不限於此，該貫穿孔在該縱向上的= 134214.doc 19 200927579 寬度並非必須大於該散熱器之該冷卻液供應單元在該縱向 上的該寬度。 此實施例已描述以下實例，其中該軟管經由被界定於該 罩蓋之該前部分中的該凹口延伸出該散熱器蓋。然而，本 發明不限於此，該軟管並非必須經由被界定於該罩蓋之該 前部分中的該凹口延伸出該散熱器蓋。 此實施例已描述以下實例，其中該貫穿孔被界定於該罩 蓋之該半圓柱形側壁中以便在該側壁之一圓周方向上延 伸。然而本發明不限於此，該貫穿孔可被界定於該罩蓋之 該半圓柱形側壁中以便在與該圓周方向相交的該垂直方向 上延伸’或在前視圖下可被形成圓形。 此實施例已描述以下實例’其中該罩蓋僅被形成於與該 散熱器之該罩子及該冷卻液供應單元相對之該部分。 而’本發明不限於此，且該罩蓋可被形成以便在該本體蓋 上方延伸以到達一比與該散熱器之該罩子及該冷卻液供應 單元相對之該部分更遠的部分》 【圖式簡單說明】 圖1為一根據本發明之一實施例的機車之一完整構造的 側視囷。 圖2為一截面圖’其顯示一散熱器之一構造及根據圖1所 示之該實施例的機車之散熱器周園。 圖3為一前視囷，其顯示根據圖1所示之該實施例的該機 車之一散熱器蓋的一構造。 圖4為一平面圖，其顯示根據圖1所示之該實施例的該機 134214.doc •20· 200927579 車之該散熱器蓋的該構造。 圖5為一透視圖，其顯示根據圖1所示之該實施例的該機 車之該散熱器蓋的該構造。 圖6為一沿著圖4之該直線100_〗00所取得的截面圖。 圖7為一沿著圖4之該直線200-200所取得的截面圖。 圖8為一後視圖’其顯示根據圖〗所示之該實施例的該機 . 車之該散熱器蓋的該構造。 圖9為一透視圖，其顯示根據圖1所示之該實施例的該機 〇 車之該散熱器蓋的該構造。 【主要元件符號說明】 1 機車（車輛） 2 頭管 3 主框架 3a 柩軸 4 把手 5 前整流罩 6 前叉 7 前輪 8 前擋泥板 9 腳踏座 10 座位 11 引擎 11a 臂構件 12 曲軸箱 134214.doc 200927579 ❿ 13 汽缸 15 曲柄轴 16 活塞 17 連桿 1 18 傳動機構 19 發電機構20轉子 21 吸氣風扇 22 風扇外殼 23 散熱器 23a 芯體表面 23b 表面部分 23c 冷卻液供應單元 23d 罩子 24 軟管 25 副水箱 26 散熱器蓋（用於跨坐型車輛的散熱器蓋） 26a 螺絲釘孔 26b 本體蓋 26c 頂表面 26d 罩蓋 26e 前空氣入口 26f 後空氣入口 26g 底空氣入口 26h 片狀構件 134214.doc .22· 200927579 26i 26j 26k 261 26m 26n 26o 26p ❿ 26q 26r 27 28 29 30 31 D1 ❿ D2 F3 - F4 片狀構件 空氣引導單元 後空氣導件 底空氣導件 側壁 最外側部分 凹口（第一凹口） 軟管固持钳 凹口（第二凹口） 貫穿孔 螺絲釘 後輪 後擋泥板 排氣管 消音器 内徑 距離（最大外徑） 流動空氣 流動空氣 134214.doc -23-BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator cover for a straddle type vehicle and a straddle type vehicle having the radiator cover. More particularly, the present invention relates to a radiator cover for a straddle-type vehicle, comprising a cover for covering a cover of a radiator and a straddle with the radiator cover Type of vehicle. [Prior Art] Conventionally, a small vehicle (a straddle type vehicle) having a radiator grill (radiator cover) has been known (for example, see Patent Document 1) 'The radiator grill is attached to the small Vehicle. Patent Document 1 discloses a small vehicle having a radiator and a radiator grill. The radiator has a core surface configured to face the front of the vehicle. The radiator grill is positioned at the radiator刖 so as to cover a front portion of the heat sink. A gas guide passage for guiding air to the surface of the core is defined at a portion opposite to the surface of the core body for a radiator grille for a small vehicle One portion of the heat sink grid above the portion opposite to the surface of the core is a wall covering a front portion and an upper portion of the heat sink. [Patent Document 1] JP-A -Sho 63-106320 SUMMARY OF THE INVENTION In the radiator grill (radiator cover) for a small vehicle (a straddle type handle) disclosed in Patent Document 1, the front portion of the radiator is covered and The upper portion of the wall is in the core The portion of the 134214.doc -6 - 200927579 radiator grille is formed over the opposite portion of the surface. Therefore, the heat released into the space between the radiator grill and the surface of the core of the heat sink Trapped in a portion of the radiator grille above the portion opposite the surface of the core. This configuration is therefore unfavorable 'because the coolant of the radiator cannot be sufficiently cooled. - The invention is made To solve the above problem, and an object of the present invention is to provide a radiator cover for a straddle type vehicle, which is capable of sufficiently cooling a coolant of a radiator and a straddle type having the radiator cover According to a first aspect of the present invention, a radiator cover for a straddle type vehicle has a body cover that is disposed transversely to one of the vehicles with respect to one. a heat sink surface of the core surface configured to cover one of the outer body covers of the core surface; and a cover disposed on a top surface of the body cover to cover a heat sink disposed on the heat sink a cover The cover has a consistent perforation adjacent the boundary between the body cover and the cover. The through hole extends from one side of the heat sink through the heat sink to one side of the outer surface of the cover As described above, the heat sink cover for a straddle type vehicle according to the first aspect has a side extending from the side of the heat sink to the cover adjacent to the boundary between the body cover and the cover Covering the through hole of the side of the outer surface. This configuration allows heat in the space between the body cover and the heat sink of the heat sink cover to escape to the outside through the through hole, thereby preventing heat from being trapped In the vicinity of the cover of the heat sink. Therefore, the coolant of the heat sink can be sufficiently cooled. 134214.doc • 7- 200927579 According to a second aspect of the present invention, a straddle type vehicle includes a heat sink And a heat sink cover for the heat sink having a core surface configured to face a lateral direction of the vehicle. The heat sink cover includes a body cover disposed relative to the heat sink to cover an outer side of the core surface, and a top surface of the body cover disposed to cover a heat sink disposed on the heat sink The cover of the cover. The heat sink cover has a consistent perforation adjacent the boundary between the body cover and the cover. The through hole extends from the side of the heat sink through the heat sink cover to an outer surface of the cover. Θ As described above, in the straddle type vehicle according to the second aspect, the heat sink cover has the through hole adjacent to the boundary between the body cover and the cover. The through hole extends from the side of the heat sink through the heat sink cover to the outer surface of the cover. This configuration allows heat in the space between the body cover of the heat sink cover and the heat sink to escape through the through hole, thereby preventing heat from being trapped in the vicinity of the cover of the heat sink. Therefore, the coolant of the radiator can be sufficiently cooled. [Embodiment] ^ Referring to the drawings, a preferred embodiment of the present invention will be described later. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of the entire structure of a locomotive in accordance with an embodiment of the present invention. 2 to 9 are explanatory views of the configuration of the radiator cover and the periphery of the radiator cover of the locomotive according to the embodiment of Fig. 1. In the present embodiment, a straddle locomotive will be described as an example of a straddle type vehicle according to the present invention. The direction indicated by the arrow FWD is the forward direction of the locomotive in each figure. This configuration of the locomotive 1 according to this embodiment of the present invention will be described with reference to the drawings! It is described in detail in Fig. 9 to 134214.doc 200927579. As shown in Fig. 1, a main frame 3 of the locomotive according to this embodiment of the present invention is fixed to a lower portion of a head pipe 2. The main frame 3 extends rearward from the lower portion. The head tube 2 and the main frame 3 form a body frame. The handle 4 is rotatably attached to an upper portion of the head tube 2. A front cowl 5 is disposed in front of the head pipe 2 to cover a front portion of the head pipe 2. Two pairs of front and rear members 6 having a suspension mechanism are disposed under the head tube 2 for absorbing vertical vibration. A front wheel 4 is rotatably attached to a lower portion of the front and rear sides. A front fender 8 is disposed above the front wheel 7. A footrest 9 is disposed above a central portion of the main frame 3. A bit 10 is disposed above one of the rear portions of the main frame 3. An engine block is disposed below the rear portion of the main frame 3. Specifically, a pivot 3& 6 is placed on the rear portion of the main frame 3 again. The engine 11 is attached to the pivot 3a by an arm member 1 ia between the engine and the pivot 3a on which the arm member 1 la can be pivoted. More specifically, the engine is a unit swing engine and is constructed to hold a rear wheel 28' disposed at a rear portion of the engine casing such that the rear wheel 28 is pivotable about the pivot 3a. The rear wheel will be described later. As shown in FIG. 2, the engine 11 includes a crankcase 12, a cylinder 13 attached to a portion of the crankcase 12 forward (in the direction indicated by the arrow FWD), and a cylinder 13 attached thereto. In order to close one of the cylinders 13 to open forward (in the direction indicated by the arrow FWD). A crankshaft 15 is rotatably disposed in the crankcase 12 such that the crankshaft 15 extends in a vehicle width direction (direction indicated by arrows L and R). - A piston 16 placed in the cylinder 13 and a connecting rod 17 134214.doc -9. 200927579 of the crankshaft 15 are attached to the crankshaft 15. A transmission mechanism 18 is disposed above the crankshaft 15 on the side indicated by arrow 1. A power generating mechanism 19 is disposed on the crankshaft 15 on the side indicated by the arrow R. The power generating mechanism 19 includes a rotor 20 that rotates with the crankshaft 15. The rotor 20 is attached to one end portion of the crank shaft 15 on the side indicated by the arrow r. An intake fan 21 that rotates about the rotating shaft of the rotor 20 is disposed on the rotor. The suction fan 21 rotates with the rotor 20 as the crankshaft 15 rotates, thereby priming the air mainly through a rear air inlet 26f in the direction indicated by the arrow F1 while simultaneously causing the air to be inhaled. The fan 21 flows in the radial direction indicated by the arrow F2, which will be described later. A fan casing 22 made of aluminum is attached to the crankcase 12 on the side indicated by the arrow R to cover the suction fan 21. A heat sink 23 is attached to the fan casing 22 on the side indicated by the arrow R. Specifically, the heat sink 23 is configured such that a core surface 23a faces the direction indicated by the arrow R (one lateral direction of the vehicle), and a surface portion 23b opposite to the side of the core surface 23& It is opposed to the intake fan 21. Therefore, the radiator 23 is positioned such that the direction in which the air is sucked by the suction fan 21 (the direction indicated by the arrow F1) is substantially perpendicular to the core surface 23a. As shown in Figs. 3 and 4, a coolant supply unit 23c is disposed on the heat sink 23 above the core surface 23a, and the coolant is injected into the heat sink 23 via the unit 23c. A cover 23 (1 having a non-circular shape is attached to the coolant supply unit 23c. As shown in Fig. 4, 'two protrusions 23e' are formed on the cover 23d, as viewed from above the heat sink 23, Each of the protrusions projects radially outward toward one of the covers 23d. 134214.doc 200927579 As shown in Figures 3 and 4, one end of a hose 24 is attached to the coolant on the side indicated by arrow FWD. One portion of the supply unit 23, through which the coolant in the radiator 23 can flow. As shown in Fig. i, the hose 24 is configured to extend in the direction indicated by the arrow FWD. The other end is connected to a pair of water tanks 25, which are disposed adjacent to the footrest 9 on the main frame 3. This configuration allows the coolant in the radiator 23 to be even When heated to a higher temperature and thus the volume is increased, it can be transferred to the sub tank 25 via the hose 24. As shown in Figure 5, the hose 24 is positioned to extend out through a recess 26 The radiator cover 26 is guided to the sub tank 25' in a state of being held by a pair of hose holding tongs 26p A notch is defined in the radiator cap 16, which will be described later with the hose retaining pliers 26p. Meanwhile, in this embodiment as shown in Figs. 2 and 4, it is made of a resin. The heat sink cover 26 is disposed on the side of the core surface 23a of the heat sink 23 indicated by the arrow R so as to cover one of the outer sides of the core surface 23a (the side indicated by the arrow R). The cover 26 is an example of the "heatsink cover for a straddle type vehicle" of the present invention. As shown in Figures 3 and 5, 'four screw holes 26a' are defined in the radiator cover 26. The heat sink cover 26 is attached to the fan casing 22 by screws 27 (see Fig. 1). In this embodiment, the radiator cover 26 includes a body cover 26b and a cover 26d. The body cover 26b covers the heat dissipation. The outer side of the core surface 23a of the device 23 (the side indicated by the arrow R). The cover 26d is disposed on a top surface 26c of the body cover 26b so as to cover the cover 23d of the heat sink 23. The body cover 26b has a front air inlet 26e, the rear air inlet 26f 134214.doc 200927579 and a bottom air inlet The front air inlet 26e, the rear air inlet 26f and the bottom air inlet 26g are each formed so as to oppose the core surface 23a of the heat sink 23 (see Fig. 4) and have openings directed in different directions. The air inlet 26e has the opening on the side forward (the direction indicated by the arrow FWD) and is formed to bring at least a part of the flow wind F3 (see Figs. 1 - and 4) therein. Specifically, the front air The inlet 26e is disposed on the front side of the radiator cover 26 (the side indicated by the arrow FWD) such that the front air inlet 26e is inclined toward the front side (the side indicated by the arrow fwD) The middle is opened at a predetermined angle with respect to the vehicle width direction (the direction indicated by the arrows L and R) (see Fig. 3). As shown in FIG. 4, the front air inlet 26e is placed so as to face the front of the core surface 23& of the heat sink 23 (the direction indicated by the arrow FWD) and has air (the flow wind F3). The function of guiding the forward portion (the direction indicated by the arrow FWD) to the core surface 23a. A plurality of sheet members (heat sinks) 26h are provided on the front air inlet 26e integrated with the radiator cover 26. The plurality of sheet members 26h are arranged to be inclined obliquely rearward and upward from the front side of the opening σ of the front air population 26e and do not overlap each other when viewed as a plane. Each of the plurality of sheet members 26h is formed to have a predetermined inclination angle with respect to the core surface 23&. As shown in FIGS. 6 and 7, each of the plurality of sheet members 26h (see FIG. 6) is configured such that the sheet members are applied with the predetermined angle of inclination smaller than the sheet member of the rear air inlet 26f. (See Fig. 7) One of the sheet-like members plus one will be described later with respect to the predetermined inclination angle of the core surface 23a. In other words, the sheets 1342I4.doc 12 200927579 members 26h (see Fig. 6) of the front air inlet 2 are configured such that they are compared with the sheet members 26i via the rear air inlet 26f (see Fig. 7), The dirt or the like is less easily entered into the inner side of the radiator cover 26 via the sheet members 26h (the side indicated by the arrow L). As shown in FIGS. 3 and 5, the rear air inlet 26f has the opening on the side opposite to the rearward side (the direction indicated by the arrow 'head FWD), and is formed so as to be used by the suction fan. 21 (see Figure 2) The inhaled air supply fi (see Figure 2) is taken in. Specifically, as shown in FIGS. 2 and 5, the rear air inlet 26f is disposed on the rear side of the radiator cover 26 so as to be opposite to the forward side (the direction indicated by the arrow FWD). The direction in which the side is inclined is opened at a predetermined angle with respect to the vehicle width direction (the direction indicated by the arrows L and R). As shown in Figs. 3 and 5, the plurality of sheet members (heat sinks) 26i are disposed in the rear air inlet 26f integrated with the radiator cover 26. The plurality of sheet members 26i are configured to extend obliquely rearward and upward from one of the front sides of the opening of the rear air inlet 26f and do not overlap each other when viewed as a plane. Each of the plurality of sheet members 26i (see Fig. 7) is formed to have a predetermined inclination angle with respect to the core surface 23a. As shown in FIGS. 6 and 7, each of the plurality of sheet members 26i (see FIG. 7) is configured such that the predetermined inclination angle of the sheet members 26i is larger than the sheet shape of the rear air inlet 26e. The predetermined angle of inclination of the member 26h (see Fig. 6) relative to the core surface 23& That is, the sheet members 26A (see FIG. 7) of the rear air inlet 26f are configured such that air flows into the inner side of the radiator cover 26 via the sheet members 26 (the side indicated by the arrow L) It is easier than the sheet members 26h (see Fig. 6) via the front air inlet. 134214.doc 13 200927579, as shown in Figures 1 and 3, the bottom air inlet 26g has the opening directed in a direction, at least a portion of the flow wind F4 below the front air inlet 26e can be brought into the direction The area below the rear air inlet 26f. The bottom air inlet 26g is formed to extend obliquely downward toward the forward direction (the direction indicated by the arrow FWD). As shown in Figs. 8 and 9, an air guiding unit 26j is formed on the rear surface side (the side indicated by the arrow L) of the heat sink cover 26 which is integrated therewith (see Fig. 9). The air guiding unit 26j is formed to guide the air introduced through the bottom air inlet 26g to a lower region of the core surface 23a of the heat sink 23 (see Fig. 8). The air guiding unit 26j is disposed on the rear surface side of the heat sink cover 26 (the side indicated by the arrow L) (see FIG. 9) so as to protrude therefrom and includes a rear air guide 26k and a bottom air guide. Piece 261. The rear air guide 26k extends downward from the vicinity of the rear end of the bottom air inlet 26g. The bottom air guide 261 is connected to the bottom end of one of the rear air guides 26k and extends obliquely downward in the forward direction (the direction indicated by the arrow FWD). The rear air guide 26k has a function of preventing the air (the flowing air F4) (see FIG. 8) that has been introduced by the bottom air inlet 26g from escaping backward and simultaneously guiding the air to the radiator 23. The function of the opposite part (see Figure 8) in the lower area (the arrow • FWD indicates the direction). The bottom air-gas guide 261 has a function of preventing the air (the flowing air F4) (see FIG. 8) that has been introduced by the bottom air inlet 26g from escaping downward and simultaneously guiding the air to the heat sink 23 The function of a portion of the lower region (the direction indicated by the arrow FWD) is opposite to the side (see Fig. 8). As shown in FIG. 3 and FIG. 5, in this embodiment, a side wall 26m is disposed on the cover 26d formed on the top surface 26c of the body cover 26b at 134214.doc -14-200927579 to cover The side portion 26m of the cover 23d is formed so as to extend vertically downward from a laterally adjacent one of the covers 23d (see Fig. 3) to the top surface 26c of the body cover 26b. As shown in Fig. 4, the side wall 26m protrudes toward the outer side (the side indicated by the arrow R) of the outermost portion 26n of the top surface 26c of the body cover 26b when viewed from above. In this embodiment, as shown in FIGS. 4 and 8, the side wall 26m of the cover 26d is constructed such that one of the inner peripheral surfaces of the side wall 26m (the cover 26d) has an inner diameter D1 (see FIG. 8) a distance D2 greater than the opposite end of the two protrusions 23e' which is the maximum outer diameter of one of the outer circumferences of the cover 23d. That is, even when the cover 23d is rotated with respect to the coolant supply unit 23c, the cover 26d is constructed so as not to contact the cover 23d. In this embodiment, as shown in FIGS. 3 and 4, the side wall 26m of the cover 26d has a semi-cylindrical shape and is constructed to cover the coolant supply of the heat sink 23 from the side indicated by the arrow R. Unit 23c and the cover 23d. As shown in Fig. 5, the semicircular notch 26 is defined in a portion of the side of the side wall 26m of the cover 26d (the side indicated by the arrow FWD). The notch 26 is defined by cutting the side wall 26m on the side indicated by the arrow L such that the flow wind F5 from the front side (the side indicated by the arrow FWD) flows into the cover 26d. Inside. That is, as shown in FIG. 8, the notch 26 is provided to urge the flow wind F5 to impinge on the vicinity of the coolant supply unit 23c of the radiator 23, thereby cooling the vicinity of the coolant supply unit 23c. . This notch 26 is an example of the "first notch" of the present invention. As shown in FIG. 5, the recess 26 is configured to allow the heat sink 23 to dissipate the hose 24 of the coolant supply unit 2 on the side indicated by the arrow 134214.doc 200927579 head FWD. The inner side of the cover 26 extends to the outside of the heat sink cover 26 via the recess 26〇. The pair of hose retaining tongs 26p (each arranged to direct the hose 24 to the side indicated by arrow FWD) are formed on the upper surface of the side of the arrow FWD relative to the recess 26〇 Up so as to stand up. The pair of hose retaining tongs 26p are configured to have a predetermined gap ' between the retaining tongs in a longitudinal direction and the lateral direction (the direction indicated by the arrow R&L) and are constrained in the longitudinal direction One of the upwardly extending hoses 24 is moved laterally (in the direction indicated by arrows R and L). A semicircular recess 26q is defined in an upper surface of the cover 26d of the heat sink cover 26 so as to correspond to an upper surface of the cover 23d of the heat sink 23. The notch 26q is defined by cutting the side indicated by the arrow L of the upper surface of the cover 26d. This notch 26q is an example of the "second notch" of the present invention. In this embodiment, the heat sink cover 26 has a permanent through hole 26γ at the boundary between the body cover 26b and the cover 26d. The through hole 26r is from the side of the heat sink 23 (arrow L) The side of the finger extends through the heat sink cover 26 to the outer surface of the cover 26d (the side to which the arrow R refers). Specifically, the through hole 26r is defined in the boundary between the side wall 26m and the top surface 26c of the body cover 26b so as to extend in one circumferential direction of the side wall 26m. As shown in Fig. 3, the width of the through hole 26r in the longitudinal direction is larger than the width (outer diameter) of one of the coolant supply units 23c of the heat radiator 23. The side wall 26m is vertically positioned to correspond to the coolant supply unit 23c 134214.doc -16· 200927579 of the radiator 23 as described above, and the rear wheel 28 is rotatably disposed at the rear portion of the engine π. A rear fender 29 is disposed above the rear wheel 28 to cover the rear wheel 28 from above. Further, an exhaust pipe 30 is connected to the engine 11. The exhaust pipe 30 is configured to extend rearwardly and to be coupled to a muffler 31. In this embodiment, as described above, the heat sink cover 26 has the through hole 26r at the boundary between the body cover 26b and the cover 26d. The through hole 26r extends from the side of the heat sink 23 through the heat sink cover 26 to the side of the outer surface of the cover 26d (the outer side of the side wall 26m). This configuration allows heat in the space between the body cover 26b of the heat sink cover 26 and the heat sink 23 to escape through the through hole 26r, thereby preventing heat from being trapped in the cover of the heat sink 23. Adjacent to 23d. Therefore, the coolant of the radiator 23 can be sufficiently cooled. In this embodiment, as described above, the through hole 26 is configured to be larger than the width of the coolant supply unit 23c to which the cover 23d of the heat sink 23 is attached, thereby causing a large amount of air to flow into the cooling. The vicinity of the liquid supply unit 23c. Therefore, the vicinity of the coolant supply unit ® 23c in the radiator 23 can be cooled, so that the coolant of the radiator 23 can be cooled more sufficiently. In this embodiment, as described above, the side wall 26m is formed to extend vertically downward to the top surface 26c of the body cover 26b. Therefore, compared with the configuration in which the side wall 26m is formed in a shape conforming to the cover 23d of the heat sink 23 and having a shape in which the outer diameter of the coolant supply unit 23c is larger than the outer diameter of the cover 23d. A sufficient gap can be ensured between the coolant supply unit 23c of the radiator 23 and the side wall 26m. This improves the efficiency of the heat dissipation of the 134214.doc 200927579. In this embodiment, the through hole 26r is defined in the boundary between the side wall 26m of the cover 26d and the body cover 26b as described above. Therefore, the heat in the space between the body cover 26b of the radiator cover 26 and the radiator 23 is dissipated to the outside while protecting the vicinity of the cover 23d of the radiator 23. In this embodiment, 'the recess 26' is defined in the front portion of the cover 26d (the side indicated by the arrow FWD) as described above, thereby causing the flow air F5 to flow into the cover 26. (1 of the inner side. This also allows the coolant of the heat sink 23 to be cooled. In this embodiment, as described above, the recess 26 is defined such that the hose to be connected to the heat sink 23 can be The heat sink cover 26 extends through the recess 26 。. Therefore, the recess 26 〇 can perform not only the function of guiding the flow wind F5 to the inside of the cover 26 d but also allowing the hose 24 to pass therethrough The function of the extension. In this embodiment, as described above, the notch 26q is defined in the upper surface of the cover 26d® so as to correspond to the upper surface of the cover 23d of the heat sink 23. Therefore, in the heat dissipation The heat in the space between the body cover 26b of the cover 26 and the heat sink 23 can escape not only through the through hole 26r but also through the notch 26q. This also improves the efficiency of heat dissipation. In this embodiment, as described above, the inner circumference of the side wall 26m of the cover 26d The inner diameter D1 is greater than the distance D2 between the two ends of the two protrusions 23e, and the distance D2 has a maximum outer diameter of the outer circumference of the cover 234 having a non-circular shape. This configuration can suppress the cover 23d from interfering with the outer diameter. The inner peripheral surface of the side wall 26m of the cover 262214.doc -18-200927579. In this embodiment, as described above, the through hole 26r is defined to extend in the circumferential direction of the semi-cylindrical side wall 26m, Thereby, the penetration of the through hole 26r extending in the longitudinal direction and the vehicle width direction (the direction indicated by the arrows R and L) is facilitated. Therefore, the body cover 261) and the heat dissipation in the radiator cover 26 This heat in the space between the devices 23 can be effectively discharged through the through holes 26r^. It is to be understood that the embodiment of the invention disclosed herein is not to be construed as limiting the scope of the invention in any manner. The scope of the present invention is not limited by the description of the preferred embodiments, but is defined by the scope of the technical solutions and includes the meaning equivalent to the meaning of the scope of the technical solutions and any of the techniques. Modifications within this scope of the program. For example, in this embodiment, a straddle locomotive is employed as a straddle-type vehicle that includes a radiator cover. However, the present invention is not limited thereto and can be applied to any other straddle type vehicle such as a three-wheeled vehicle having a radiator @cover and an all-terrain vehicle (ATV). This embodiment has described an example in which the through hole is defined in the cover at the boundary between the body cover and the cover. However, the present invention is not limited thereto. The through hole may be defined in the body cover at the boundary between the body cover and the cover. This embodiment has described the following example in which the width of the through hole in the longitudinal direction is larger than the width of the coolant supply unit of the heat sink in the longitudinal direction. However, the invention is not limited thereto, and the width of the through hole in the longitudinal direction = 134214.doc 19 200927579 does not have to be greater than the width of the coolant supply unit of the heat sink in the longitudinal direction. This embodiment has described an example in which the hose extends out of the heat sink cover via the recess defined in the front portion of the cover. However, the invention is not limited thereto, and the hose does not have to extend out of the radiator cover via the recess defined in the front portion of the cover. This embodiment has described the following example in which the through hole is defined in the semi-cylindrical side wall of the cover so as to extend in one circumferential direction of the side wall. However, the invention is not limited thereto, and the through hole may be defined in the semi-cylindrical side wall of the cover so as to extend in the vertical direction intersecting the circumferential direction or may be formed in a circular shape in a front view. This embodiment has described the following example 'where the cover is formed only in the portion opposite to the cover of the heat sink and the coolant supply unit. And the invention is not limited thereto, and the cover may be formed to extend over the body cover to reach a portion farther than the portion of the heat sink opposite the cover and the coolant supply unit. Brief Description of the Drawings Fig. 1 is a side elevational view of a complete construction of a locomotive in accordance with an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the construction of a radiator and the radiator of the locomotive according to the embodiment shown in Fig. 1. Fig. 3 is a front view showing a configuration of a radiator cover of the locomotive according to the embodiment shown in Fig. 1. Figure 4 is a plan view showing the configuration of the radiator cover of the machine 134214.doc • 20· 200927579 according to the embodiment shown in Fig. 1. Figure 5 is a perspective view showing the configuration of the radiator cover of the locomotive according to the embodiment shown in Figure 1. Figure 6 is a cross-sectional view taken along line 100_00 of Figure 4. Figure 7 is a cross-sectional view taken along line 200-200 of Figure 4. Figure 8 is a rear view showing the configuration of the radiator cover of the vehicle of the embodiment shown in the drawings. Figure 9 is a perspective view showing the configuration of the radiator cover of the motorcycle according to the embodiment shown in Figure 1. [Main component symbol description] 1 Locomotive (vehicle) 2 Head tube 3 Main frame 3a 柩 shaft 4 Handle 5 Front fairing 6 Front fork 7 Front wheel 8 Front fender 9 Foot seat 10 Seat 11 Engine 11a Arm member 12 Crankcase 134214.doc 200927579 ❿ 13 Cylinder 15 Crankshaft 16 Piston 17 Link 1 18 Transmission 19 Power generation mechanism 20 Rotor 21 Suction fan 22 Fan casing 23 Radiator 23a Core surface 23b Surface portion 23c Coolant supply unit 23d Cover 24 Soft Tube 25 sub tank 26 radiator cover (heatsink cover for straddle type vehicle) 26a screw hole 26b body cover 26c top surface 26d cover 26e front air inlet 26f rear air inlet 26g bottom air inlet 26h sheet member 134214. Doc .22· 200927579 26i 26j 26k 261 26m 26n 26o 26p ❿ 26q 26r 27 28 29 30 31 D1 ❿ D2 F3 - F4 sheet member air guiding unit rear air guide bottom air guide side outermost part notch (first Notch) Hose retaining pliers notch (second notch) through hole screw rear wheel rear fender exhaust pipe muffler inner diameter Distance (maximum outer diameter) flowing air flowing air 134214.doc -23-