546217 A7 B7 五、發明説明（1 ) 發明背景 本發明係相關於配置用來控制車輛底部下的氣流之車 (請先閲讀背面之注意事項再填寫本頁) 輛底結構。 習知上，提出有各種車輛底結構，其中用以回縮車輛 本體的底板下的氣流之氣流回縮部位設置於車輛的驅動源 插入室下。這些車輛底結構下的氣流回縮部位建構成藉由 回縮車輛本體的底板下的氣流，有效將熱空氣自驅動源插 入室排至車輛後部 UP-A-5-330457, JP-A-9-3 15 346 )。 在包含氣流回縮部位之車輛底結構中，氣流回縮部位 不可缺地設置有向下突出之底蓋。然後，爲了有效自驅動 源插入室排出熱空氣，因爲氣流回縮部位及驅動源插入室 間的不同壓力需增加，故希望氣流回縮部位裝配成大部分 向下延伸。 經濟部智慧財產局員工消費合作社印製 但在習知車輛底結構中，當爲了增加氣流回縮部位及 驅動源插入室間的不同壓力，氣流回縮部位裝配成大部分 向下延伸時，氣流回縮部位的強度需增加。但是，因爲氣 流回縮部位建構成不可缺地設置有底蓋，故氣流回縮部位 的強度增加會影響底蓋剩餘部位的強度設計，實際上，設 計的自由度相當低，因此難以擴大氣流回縮部位的表面配 置。 發明槪述 本發明鑑於此問題而做，其目的係設置一包含不需設 置底蓋及因此提供高自由度的表面配置設計之氣流回縮部 --—---~ 4 - 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 546217 A7 B7 五、發明説明（2 ) 位的車輛底結構。 (請先閲讀背面之注意事項再填寫本頁) 爲了達成此目的，根據本發明的第一觀點，設置有一 車輛底結構，包含車輛的框架部位，及設置於車輛前部的 驅動源插入室下用以回縮車輛底板下的氣流之氣流回縮部 位。在車輛底結構中，氣流回縮部位建構成包括沿著橫向 形成並向下延伸之板形氣流直通構件，在其中氣流回縮部 位裝附於該車輛的框架部位。 根據如此建構，在車輛底結構中，因爲具有板形氣流 直通構件之氣流回縮部位裝附於車輛的框架部位，故板形 氣流直通構件的表面配置可奇異並自由地在橫向及向下的 方向配置，藉此，通過氣流回縮部位之底板下的氣流及來 自驅動源插入室的熱空氣間的不同壓力能夠增加。 此外’當連同底板下的氣流主要在板形氣流直通構件 上施加特定定位強度時需要板形氣流直通構件之設置，因 爲氣流直通構件裝附於車輛的框架，故能夠達到足夠的定 位力。 經濟部智慧財產局員工消費合作社印製 而且’根據本發明的第二觀點，設置有如本發明的第 一觀點已陳述之車輛底結構，其中，氣流回縮部位包含裝 附於框架部位的基座，且氣流直通構件設置於基座的下側 〇 並且’根據第二觀點，更好的是氣流回縮部位爲具有 特定彈性的材料所形成之彈性構件。 根據如此建構，根據車輛底結構之氣流回縮部位能夠 藉由調整以具有特定彈性的彈性構件做成之氣流直通構件 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -5- 546217 A7 B7 五、發明説明（3 ) 的彈性適當地控制底板下的氣流，且能夠根據外力偏轉， 即使當此種外力施加於彈性構件。 此外，根據本發明的第三觀點，設置有如本發明的第 一観點已陳述之車輛底結構，其中，基座具有包含於氣流 直通構件厚度中之金屬心部位。根據如此建構，因爲能夠 遏制氣流直通構件的變形，故即使施加有氣流的阻力，仍 可得到適當的底板下的氣流。尤其是，即使當車輛以高速 行駛於高速公路時，仍可完成氣流直通構件的任務，以致 能夠達成想要的氣流直通作用。 再者，根據本發明的第四觀點，設置有如本發明的第 三觀點已陳述之車輛底結構，其中，氣流直通構件藉由焊 接在金屬心裝附於基座。 而且，根據第四觀點，更好的是金屬心部位建構成具 有塡充氣流直通構件的部分之裝附孔。根據如此建構，因 爲基座的裝附孔塡充氣流直通構件的部分，故氣流回縮部 位能夠增進裝附強度。 然後，根據本發明的第五觀點，設置有如本發明的第 第一至四任一觀點已陳述之車輛底結構，其中，氣流直通 構件建構成當其自基座向下延伸時，其厚度以錐形方式減 少。根據如此建構，氣流直通構件在容易接觸路面上的障 礙物之較靠近路面的部位較容易偏轉，藉以防止破壞氣流 直通構件，相反地，遠離路面的部位較難偏轉，藉以達到 想要的氣流直通作用。 - .__________ - 6 - 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 546217 A7 _ B7_ 五、發明説明（4 ) 圖示簡單說明 (請先閱讀背面之注意事項再填寫本頁) 圖1爲說明氣流回縮部位裝附於根據本發明之車輛底 結構的框架部位狀態的透視圖； 圖2爲說明氣流回縮部位裝附於根據本發明之車輛底 結構狀態的透視圖； 圖3爲說明根據車輛底結構之氣流回縮部位透視圖； 圖4爲說明根據本發明的車輛底結構之氣流回縮部位 的基座透視圖； 圖5爲沿圖3的V-V線所取的截面圖； 圖6爲說明根據本發明的車輛底結構之氣流回縮部位 放置的典型狀態的典型圖。 元件對照表 2 :裝附部位 2b :螺栓孔 3a :上塊部位 3c :下塊部位 3e :裝附孔 4a :階梯部位 4c :厚部位 10 :框架部位 1 2 :裝附螺栓 21 :散熱器 23 :觸媒變換器 _-7- 1 :氣流回縮部位 2a :嚙合爪部位 3 :基座 經濟部智慧財產局員工消費合作社印製 3b :中間階梯部位 3d :下側彎曲部位 4 :氣流直通構件 4b :錐形部位 5 :裝附構件 1 1 :子框架 20 :引擎 22 :觸媒變換器 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 546217 A7 B7 五、發明説明（5 ) 24 :濺射檔板 30 :驅動源插入室 30 :驅動源插入室 B :寬度 Η :高度 較佳實施例之詳細說明 本發明的實施例將參照附圖說明如下。 圖1爲說明氣流回縮部位裝附於車輛底結構之框架部 位狀態的透視圖，圖2爲說明氣流回縮部位裝附於車輛底 結構狀態的透視圖，圖3爲說明根據車輛底結構之氣流回 縮部位透視圖，圖4爲說明氣流回縮部位的基座透視圖， 圖5爲沿圖3的V-V線所取的截面圖，及圖6爲說明根據 車輛底結構的氣流回縮部位放置之典型狀態的典型圖。 如圖1及6所示，在車輛底結構中，氣流回縮部位1 經由裝附構件5裝附於梯形框架部位1 〇的子框架1 1。在其 前側安裝有引擎20之驅動源插入室30下，梯形框架部位 1 〇支撐引擎20於上。此外，當更進一步看到在驅動源插入 室30內之排氣系統的觸媒變換器22位置關係時，觸媒變 換器23布置於框架部位1 〇的後側。 然後，氣流回縮部位1包含具有裝附部位2之基座3 及設置於基座3的下緣側上之氣流直通構件4。 如圖3及4所示，在此例中，基座3由諸如鐵等金屬 材料做成，依次包含上塊部位3a，具有形成對應子框架1 1 的部位輪廓的表面配置之裝附部位2 ;中間階梯部位3b， 藉由自上塊部位3 a水平延伸的方式彎曲基座3所形成的； ----8- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閱讀背面之注意事項再填寫本頁)546217 A7 B7 V. Description of the invention (1) Background of the invention The present invention relates to a vehicle bottom structure that is configured to control the airflow under the vehicle bottom (please read the precautions on the back before filling this page). Conventionally, various vehicle bottom structures have been proposed, in which an airflow retraction portion for retracting the airflow under the floor of the vehicle body is provided under the drive source insertion chamber of the vehicle. These airflow retraction parts under the vehicle bottom structure are constructed to retract the airflow under the floor of the vehicle body, effectively discharging hot air from the drive source insertion chamber to the rear of the vehicle. UP-A-5-330457, JP-A-9 -3 15 346). In the vehicle bottom structure including the airflow retraction portion, the airflow retraction portion is indispensably provided with a bottom cover protruding downward. Then, in order to effectively discharge hot air from the driving source insertion chamber, since the different pressures between the airflow retraction site and the driving source insertion chamber need to be increased, it is desirable that the airflow retraction site be assembled to extend mostly downward. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, but in the conventional vehicle bottom structure, when the airflow retraction part is assembled to extend downwards in order to increase the pressure of the airflow retraction part and the driving source inserted between the chambers, the airflow The strength of the retracted area needs to be increased. However, since the bottom cover is integrally provided in the airflow retraction part, the increase in the strength of the airflow retraction part will affect the strength design of the remaining part of the bottom cover. In fact, the degree of freedom in design is quite low, so it is difficult to expand the airflow retraction. Surface arrangement of the constricted part. Description of the invention The present invention has been made in view of this problem, and its purpose is to provide an airflow retraction section including a surface configuration design that does not need to be provided with a bottom cover and therefore provides a high degree of freedom. 4 --- This paper size is applicable China National Standard (CNS) A4 specification (210X297 mm) 546217 A7 B7 5. Invention description (2) Vehicle bottom structure. (Please read the precautions on the back before filling out this page.) In order to achieve this, according to the first aspect of the present invention, a vehicle bottom structure is provided, including the frame portion of the vehicle, and the drive source insertion chamber provided at the front of the vehicle is provided. The air retraction portion used to retract the air flow under the vehicle floor. In the vehicle bottom structure, the airflow retraction portion is constructed to include a plate-shaped airflow through member formed in a lateral direction and extending downward, and the airflow retraction portion is attached to a frame portion of the vehicle. According to this structure, in the vehicle bottom structure, since the airflow retraction portion having the plate-shaped airflow through member is attached to the frame portion of the vehicle, the surface configuration of the plate-shaped airflow through member can be singular and free in the lateral and downward directions. Directional arrangement, whereby different pressures between the airflow under the floor passing through the airflow retraction site and the hot air from the drive source insertion chamber can be increased. In addition, when the specific positioning strength is mainly applied to the plate-shaped airflow through member together with the airflow under the floor, the plate-shaped airflow through member is required to be installed. Because the airflow through member is attached to the frame of the vehicle, sufficient positioning force can be achieved. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and 'according to the second aspect of the present invention, a vehicle bottom structure as set forth in the first aspect of the present invention is provided, wherein the airflow retraction portion includes a base attached to the frame portion The airflow through member is disposed on the lower side of the base. According to the second aspect, it is more preferable that the airflow retraction portion is an elastic member formed of a material having a specific elasticity. According to such a structure, the airflow retraction portion according to the vehicle bottom structure can be adjusted by an airflow through member made of an elastic member having a specific elasticity. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -5- 546217 A7 B7 5. The elasticity of the description of the invention (3) appropriately controls the airflow under the bottom plate, and can be deflected according to external force, even when such external force is applied to the elastic member. Further, according to a third aspect of the present invention, there is provided a vehicle bottom structure as stated in the first point of the present invention, wherein the base has a metal core portion included in the thickness of the airflow through member. According to this configuration, since the deformation of the airflow directing member can be suppressed, even if the airflow resistance is applied, an appropriate airflow under the floor can be obtained. In particular, even when the vehicle is traveling on a highway at a high speed, the task of the airflow directing member can be completed so that the desired airflow directing effect can be achieved. Furthermore, according to a fourth aspect of the present invention, there is provided a vehicle bottom structure as stated in the third aspect of the present invention, wherein the airflow through member is attached to the base by welding to the metal core. Further, according to the fourth aspect, it is more preferable that the metal core portion is formed with an attachment hole of a portion having a thorium inflatable flow through member. According to this structure, since the attachment hole of the base is a part of the inflatable flow through member, the airflow retraction position can increase the attachment strength. Then, according to a fifth aspect of the present invention, a vehicle bottom structure as set forth in any one of the first to fourth aspects of the present invention is provided, wherein the airflow through member is constructed so that when it extends downward from the base, its thickness is Reduced cone style. According to such a structure, the airflow through member is easier to deflect at a portion closer to the road surface that easily contacts the obstacle on the road surface, thereby preventing the airflow through member from being damaged. On the contrary, it is difficult to deflect the portion away from the road surface to achieve the desired airflow through effect. -.__________-6-This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) (Please read the notes on the back before filling this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 546217 A7 _ B7_ V. Description of the invention (4) Brief description of the diagram (please read the precautions on the back before filling this page) Figure 1 is a perspective view illustrating the state of the airflow retracted part attached to the frame part of the vehicle bottom structure according to the present invention Figure 2 is a perspective view illustrating a state where the airflow retraction portion is attached to the vehicle bottom structure according to the present invention; Figure 3 is a perspective view illustrating a airflow retraction portion according to the vehicle bottom structure; Perspective view of the base of the airflow retraction portion of the structure; FIG. 5 is a cross-sectional view taken along the line VV of FIG. 3; FIG. 6 is a typical view illustrating a typical state of the airflow retraction portion of the vehicle bottom structure according to the present invention. . Component comparison table 2: Attachment part 2b: Bolt hole 3a: Upper block part 3c: Lower block part 3e: Attachment hole 4a: Stepped part 4c: Thick part 10: Frame part 1 2: Attachment bolt 21: Radiator 23 : Catalyst converter_-7- 1: Airflow retracted part 2a: Engagement claw part 3: Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 3b: Middle stepped part 3d: Lower curved part 4: Airflow through member 4b: Conical part 5: Attachment member 1 1: Sub-frame 20: Engine 22: Catalyst converter This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm) 546217 A7 B7 V. Description of the invention ( 5) 24: sputtering baffle 30: driving source insertion chamber 30: driving source insertion chamber B: width Η: detailed description of the preferred embodiment The embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view illustrating a state where an airflow retraction portion is attached to a frame portion of a vehicle bottom structure, FIG. 2 is a perspective view illustrating a state where an airflow retraction portion is attached to a vehicle bottom structure, and FIG. A perspective view of the airflow retraction part, FIG. 4 is a perspective view of the base illustrating the airflow retraction part, FIG. 5 is a cross-sectional view taken along the line VV of FIG. 3, and FIG. 6 is a view illustrating the airflow retraction part according to the vehicle bottom structure Typical diagram of the typical state of placement. As shown in FIGS. 1 and 6, in the vehicle bottom structure, the airflow retraction portion 1 is attached to the sub-frame 11 of the trapezoidal frame portion 10 via the attachment member 5. A drive source insertion chamber 30 of the engine 20 is installed on the front side thereof, and a trapezoidal frame portion 10 supports the engine 20 above. In addition, when the positional relationship of the catalyst converter 22 of the exhaust system in the drive source insertion chamber 30 is further seen, the catalyst converter 23 is arranged on the rear side of the frame portion 10. Then, the airflow retraction portion 1 includes a base 3 having an attachment portion 2 and an airflow through member 4 provided on the lower edge side of the base 3. As shown in FIGS. 3 and 4, in this example, the base 3 is made of a metal material such as iron, and sequentially includes the upper block portion 3 a, and the attachment portion 2 has a surface arrangement forming a contour of the portion corresponding to the sub-frame 1 1. The middle stepped part 3b is formed by bending the base 3 by extending horizontally from the upper part 3a; ---- 8- This paper size applies to China National Standard (CNS) A4 (210X 297 mm) (Please read the notes on the back before filling this page)
、T 經濟部智慧財產局員工消費合作社印製 546217 A7 _____B7 五、發明説明（6 ) (請先閲讀背面之注意事項再填寫本頁) 下塊部位3c，藉由自中間階梯部位3b向下延伸的方式彎曲 基座3所形成的；下側彎曲部位3d，藉由符合氣流直通構 件4的階梯部位4a輪廓的方式彎曲基座3所形成的；及至 少一（圖中的三個）裝附孔3e，以貫穿其厚度方向的方式 形成於下塊部位3 c。 基座3的裝附部位2包含嚙合爪部位2a，藉由自上塊 部位3a —端切掉一部份並彎曲如此切掉之上塊部位3a的末 端；螺栓孔2b，藉由穿過上塊部位3a形成於上塊部位3a 之與嚙合爪部位2a橫向排成直線的位置。此外，因爲裝附 部位2形成符合當裝附部位2裝附於子框架11時，裝附構 件5插入其間的表面配置，故此處嚙合爪部位2a及螺栓孔 2b爲裝附部位2的裝附機構，但裝附機構並不侷限於此， 任何其他能夠使氣流回縮部位適當地固定於子框架11之建 構都可採取。 如圖3所示，構成基座3的心桿部位之下塊部位3c及 下側彎曲部位3d建構成支持及固定於氣流直通構件4的厚 度內，使得他們堅固確立於氣流直通構件4。 經濟部智慧財產局員工消費合作社印製 如圖3及5所示，氣流直通構件4包含平滑的階梯部 位4a，用來覆蓋構成基座3的心桿部位之下塊部位3c及下 側彎曲部位3d的外部；厚部.位4c，自階梯部位4a垂直懸 掛；及錐形部位4b，以其向下延伸時厚度逐漸減少的方式 自厚部位4c連續形成。 氣流直通構件4布置成其受底板下的氣流動作管制之 部位係位於子框架1 1的中心位置，且大體上形成四邊形， _____- 9 ~_____ 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 546217 A7 ___ B7 五、發明説明（7 ) (請先閱讀背面之注意事項再填寫本頁) 此四邊形在橫向具有特定寬度B及向下方向具有預定高度 Η。而且，在此實施例中，氣流直通構件4由具有特定彈性 之橡膠材料或合成橡膠材料（彈性構件）組成。氣流直通 構件4之橫向寬度Β及向下延伸高度Η的尺寸係根據車輛 的尺寸而定，及按照期望的氣流直通構件4的尺寸及形狀 ，使得底板下的氣流能夠適當回縮及整流且產生熱氣的車 輛底部位能夠有效冷卻。此外，向下延伸高度Η係考慮車 輛本體的下面及路面的距離按照期望地設定。當然，氣流 直通構件4的形狀並不侷限於四邊形。 此外，在固定基座3於氣流直通構件4中，方便採取 下列程序。即藉由將氣流直通構件4的熔化材料注入已固 定構成基座3的心桿部位之下塊部位3c及下側彎曲部位3d 之塑模（未圖示）中，將氣流直通構件4的部分塡充於基 座3的裝附孔3e之狀態，將基座3固定於氣流直通構件4 。而且，當將氣流直通構件4的熔化材料注入塑模中時， 方便增加硫磺及熱氣，使得氣流直通構件4的延伸性及彈 性能夠增加。 經濟部智慧財產局員工消費合作社印製 將基座3固定於氣流直通構件的方法並沒有特定的限 制，只要所設置的氣流直通構件在具有氣流回縮部位1固 定於車輛的子框架1 1之車輛跑動時，能夠表現出令人滿意 的氣流直通及冷卻作用，並且能夠維持令人滿意的裝附強 度。 此外，如圖2所示，插入裝附部位2及子框架1 1間， 用以將氣流回縮部位1裝附於子框架11之裝附構件5符合 _____-10- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 546217 A7 B7 五、發明説明（8 ) (請先閲讀背面之注意事項再填寫本頁) 所嚙合之子框架11輪廓，並在其中形成有供形成於氣流回 縮部位1的基座3之嚙合爪部位2a使用的嚙合孔，及供裝 附螺栓1 2使用的裝附嚙合孔。無須說，如此形成裝附構件 5以符合子框架11及氣流回縮部位1的建構。 接下來，將說明車輛底結構的功能。 如圖2及6所示，根據車輛底結構，經由使用裝附構 件5的對應嚙合孔嚙合裝附螺栓1 2及嚙合爪部位2a，將氣 流回縮部位1固定於車輛之框架部位10的子框架11。 如圖6所示，當行駛固定有氣流回縮部位1之車輛時 ，藉由氣流直通構件4增加不同氣壓，表現出關於底板下 的氣流之氣流直通作用，及引擎20側所產生的熱氣被排至 後部以提供有效的冷卻。最重要的是，氣流回縮部位亦可 幫助冷卻位於氣流回縮部位1後面之排氣系統的觸媒變換 器22。 經濟部智慧財產局員工消費合作社印製 而且，如圖5所示，例如，即使當位在接近路面之錐 形部位4b因接觸路邊石頭而彎曲時，因爲氣流直通構件4 爲彈性構件，同時建構成如此布置基座3以便抵銷後部位 4c及錐形部位4b的垂直軸，故施加於基座3及氣流直通構 件4間之接頭部位的影響能夠抑制到最小程度。而且，因 爲在基座3中形成有塡充氣流直通構件4之裝附孔，同時 設置有下側彎曲部位3d，故基座3能夠在垂直方向所施加 的力量之相反方向支持氣流直通構件4。 此外，如圖6所示，採取在散熱器21及引擎20間設 置濺射檔板24之建構的例子中，其與無濺射檔板設置其間 _ _ __-11 - 本紙張尺度適用中國國家標準（CNS ) A4規格（21〇X 公釐） 546217 A7 B7 五、發明説明（9 ) (請先閱讀背面之注意事項再填寫本頁) 的例子相比較時，更能增加冷卻作用。而且，濺射檔板24 的形狀及材料並無特定限制，只要自散熱器2 1及引擎20 間的間隙之向下流動的氣流能夠適當地被限制。 如直到目前所說明的，本發明提供下面絕佳優點。 (1) 根據本發明的車輛底結構，因爲以預定寬度向下 延伸之板形氣流直通構件設置於驅動源插入室之下當作回 縮底板下的氣流之氣流回縮部位，故關於底板下的氣流之 氣流回縮作用更能夠增加。結果，因爲通過氣流回縮部位 之底板下的氣流及來自驅動源插入室之熱氣間的不同壓力 更能夠增加，故能夠更有效地排出來自驅動源插入室之熱 空氣。 此外，雖然氣流直通構件需要特定的支持強度，但藉 由將氣流直通構件裝附於車輛的框架部位可獲得足夠的支 持強度。 經濟部智慧財產局員工消費合作社印製 (2) 根據本發明的車輛底結構，因爲氣流回縮部位的 氣流直通構件形成向下延伸，故有氣流直通構件接觸諸如 路邊石等路面上的障礙物之危險。但是，即使在此種情況 下，因爲氣流直通構件由具有特定彈性之彈性構件組成， 故氣流直通構件能夠處理此種阻礙而不會因此阻礙所施加 的力量而損壞。 (3) 根據本發明的車輛底結構，因爲氣流回縮部位的 基座具有支持於氣流直通構件的厚度內之心桿，故底板下 的氣流作用於氣流直通構件的變形，尤其是當車輛以高速 跑動時者，能夠遏制到極小的程度。由於此，即使當車輛 __-12-__ 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 546217 A7 B7 五、發明説明（1〇 ) 高速行駿時，仍可達到令人滿意的冷卻性能。 (4)根據本發明的車輛底結構，在氣流回縮部位的氣 流直通構件以彈性構件形成的例子中，因爲彈性構件的部 分能夠塡充於形成在基座的心桿的裝附孔中，使得彈性構 件及基座的心桿皆能夠彼此堅固的固定，基座及氣流直通 構件的組合條件能夠更牢固地維持。 根據本發明的車輛底結構，氣流回縮部位的氣流直通 構件建構成當其朝末端延伸時，其厚度逐漸減少，氣流直 通構件變得較易變形以防止其最靠近路面之末端邊緣側的 損壞，而氣流直通構件變得較難變形以在最靠近基座的部 位達到令人滿意的氣流直通作用。 (請先閱讀背面之注意事項再填寫本頁} 經濟部智慧財產局員工消費合作社印製 13 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 546217 A7 _____B7 V. Description of the invention (6) (Please read the precautions on the back before filling this page) The next part 3c, extending downward from the middle step part 3b The base 3 is formed by bending the base 3; the lower bending part 3d is formed by bending the base 3 in a manner conforming to the contour of the stepped portion 4a of the airflow through member 4; and at least one (three in the figure) is attached The hole 3e is formed in the lower portion 3c so as to penetrate the thickness direction. The attachment part 2 of the base 3 includes an engaging claw part 2a, by cutting a part from the upper block part 3a and bending it so as to cut off the end of the upper block part 3a; a bolt hole 2b, by passing through the upper part The block portion 3a is formed at a position where the upper block portion 3a is aligned with the engaging claw portion 2a laterally. In addition, since the attachment portion 2 is formed to conform to the surface configuration in which the attachment member 5 is inserted when the attachment portion 2 is attached to the sub-frame 11, the engaging claw portion 2a and the bolt hole 2b are attached to the attachment portion 2 here. Mechanism, but the attachment mechanism is not limited to this, any other construction capable of appropriately fixing the airflow retraction position to the sub-frame 11 can be adopted. As shown in FIG. 3, the lower block portion 3c and the lower bending portion 3d constituting the core rod portion of the base 3 are constructed to support and be fixed within the thickness of the airflow through member 4, so that they are firmly established in the airflow through member 4. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, as shown in Figures 3 and 5, the airflow through member 4 includes a smooth stepped portion 4a for covering the lower block portion 3c and the lower curved portion of the core rod portion constituting the base 3. The outer part of 3d; the thick portion. Bit 4c, which hangs vertically from the stepped portion 4a; and the tapered portion 4b, which is continuously formed from the thick portion 4c in such a manner that the thickness gradually decreases as it extends downward. The airflow through member 4 is arranged so that its position controlled by the airflow action under the bottom plate is located at the center position of the sub-frame 11 and generally forms a quadrangle. _____- 9 ~ _____ This paper size applies the Chinese National Standard (CNS) A4 specification ( 210X 297 mm) 546217 A7 ___ B7 5. Description of the Invention (7) (Please read the notes on the back before filling this page) This quadrilateral has a specific width B in the horizontal direction and a predetermined height in the downward direction 方向. Moreover, in this embodiment, the airflow directing member 4 is composed of a rubber material or a synthetic rubber material (elastic member) having a specific elasticity. The lateral width B and downward extension height Η of the airflow through member 4 are determined according to the size of the vehicle, and according to the desired size and shape of the airflow through member 4, so that the airflow under the floor can be properly retracted and rectified and generated. The hot bottom of the vehicle can be effectively cooled. In addition, the downward extension height is set as desired in consideration of the distance between the lower surface of the vehicle body and the road surface. Of course, the shape of the airflow straight-through member 4 is not limited to a quadrangle. In addition, in the fixed base 3 in the airflow directing member 4, the following procedures are facilitated. That is, the molten material of the airflow directing member 4 is injected into the mold (not shown) of the lower block portion 3c and the lower curved portion 3d of the core rod portion of the base 3 which has been fixed, and the airflow directing member 4 is infused. In a state of being filled in the attachment hole 3e of the base 3, the base 3 is fixed to the airflow directing member 4. Moreover, when the molten material of the airflow through member 4 is injected into the mold, it is convenient to add sulfur and hot gas, so that the elongation and elasticity of the airflow through member 4 can be increased. The method of printing the fixation base 3 to the airflow through member by the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is not particularly limited, as long as the airflow through member provided is fixed to the sub-frame 11 of the vehicle with the airflow retraction portion 1 When the vehicle is running, it can show satisfactory airflow straightening and cooling effects, and can maintain satisfactory attachment strength. In addition, as shown in FIG. 2, the attachment member 5 is inserted between the attachment portion 2 and the sub-frame 11 to attach the airflow retracted portion 1 to the sub-frame 11 in accordance with _____- 10- This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) 546217 A7 B7 V. Description of the invention (8) (Please read the precautions on the back before filling this page) The outline of the sub-frame 11 that is engaged, and formed in it for forming in An engagement hole for the engagement claw portion 2a of the base 3 of the airflow retraction portion 1, and an attachment engagement hole for the attachment bolt 12. Needless to say, the attachment member 5 is formed in such a manner as to conform to the construction of the sub-frame 11 and the airflow retraction portion 1. Next, the function of the vehicle bottom structure will be explained. As shown in FIGS. 2 and 6, according to the vehicle bottom structure, the attachment bolt 12 and the engagement claw portion 2a are engaged by using the corresponding engagement holes of the attachment member 5 to fix the airflow retraction portion 1 to the child of the frame portion 10 of the vehicle. Frame 11. As shown in FIG. 6, when driving a vehicle with the airflow retraction portion 1 fixed, different air pressure is increased by the airflow through member 4, which shows the airflow through effect on the airflow under the floor and the hot air generated by the engine 20 side is affected. Drain to the rear to provide effective cooling. Most importantly, the airflow retraction site also helps to cool the catalyst converter 22 of the exhaust system located behind the airflow retraction site1. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and, as shown in FIG. 5, for example, even when the tapered portion 4b near the road surface is bent by contact with the roadside stone, the airflow through member 4 is an elastic member, and Since the base 3 is arranged so as to offset the vertical axis of the rear portion 4c and the tapered portion 4b, the influence applied to the joint portion between the base 3 and the airflow directing member 4 can be minimized. In addition, since the attachment hole of the inflatable air flow straight member 4 is formed in the base 3, and the lower bending portion 3d is also provided, the base 3 can support the air flow straight member 4 in the opposite direction of the force applied in the vertical direction. . In addition, as shown in FIG. 6, in the example in which a sputtering baffle plate 24 is provided between the radiator 21 and the engine 20, it is arranged between the non-sputtering baffle plate _ _ __11-This paper standard is applicable to the country of China Standard (CNS) A4 specification (21 × X mm) 546217 A7 B7 V. Invention description (9) (Please read the precautions on the back before filling this page) The example can increase the cooling effect when compared. In addition, the shape and material of the sputtering baffle 24 are not particularly limited as long as the airflow flowing downward from the gap between the radiator 21 and the engine 20 can be appropriately restricted. As explained so far, the present invention provides the following excellent advantages. (1) According to the vehicle bottom structure of the present invention, since a plate-shaped airflow straight-through member extending downward with a predetermined width is provided under the drive source insertion chamber and serves as an airflow retraction portion for retracting the airflow under the floorboard, The airflow retraction effect can be increased. As a result, since different pressures between the airflow passing through the bottom plate of the airflow retraction portion and the hot air from the driving source insertion chamber can be increased, the hot air from the driving source insertion chamber can be more efficiently discharged. In addition, although the airflow through member requires a specific support strength, sufficient support strength can be obtained by attaching the airflow through member to the frame portion of the vehicle. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs (2) According to the vehicle bottom structure of the present invention, because the airflow through member at the airflow retraction portion forms a downward extension, there is an obstacle on the road surface such as the roadside stone Material danger. However, even in this case, because the airflow-through member is composed of an elastic member having a specific elasticity, the airflow-through member can deal with such obstruction without being damaged by the force applied by the obstruction. (3) According to the vehicle bottom structure of the present invention, since the base of the airflow retraction portion has a core rod that supports the thickness of the airflow through member, the airflow under the floor acts on the deformation of the airflow through member, especially when the vehicle uses When running at high speeds, it can be contained to a very small extent. Because of this, even when the paper size of the vehicle __- 12 -__ applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 546217 A7 B7 V. Description of the invention (1〇) It can still achieve impressive results. Satisfactory cooling performance. (4) According to the vehicle bottom structure of the present invention, in the example where the airflow straight-through member of the airflow retraction portion is formed of an elastic member, a part of the elastic member can be filled in the attachment hole formed in the core rod of the base, The elastic member and the mandrel of the base can be firmly fixed to each other, and the combined condition of the base and the airflow through member can be maintained more firmly. According to the vehicle bottom structure of the present invention, the airflow through member at the airflow retraction portion is constructed to gradually decrease in thickness as it extends toward the end, and the airflow through member becomes easier to deform to prevent damage to the end edge side closest to the road surface. , And the airflow through member becomes more difficult to deform to achieve a satisfactory airflow through effect at the position closest to the base. (Please read the precautions on the back before filling out this page} Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 13 This paper size applies to China National Standard (CNS) A4 (210X297 mm)