1240689 玫、發明說明： 【發明所眉么技術領域3 發明領域 本發明係有關於具有側樑與橫樑之車輛之前車體構 5 造。 發明背景 汽車的前車體構造包含有沿著車體兩側之前後方向配 置之側樑、與沿著車體的寬方向配置以連接側樑前端部之 10橫樑。側樑與橫樑之各個截面為中空之四角形狀，且以使 側樑的下面與橫樑的上面對齊之方式結合（例如參照實公 平6-26468號公報）。 側樑係作成截面中空四角形狀，且前端留下上壁與内 側壁並設有開口。橫樑係由截面為倒U字狀之樑本體與關閉 15該樑本體的下部開口之閉鎖板(底板)所形成。橫樑的兩端之 上面係靠近開口於側樑的下方之部分之後側且與内側壁焊 接，且在側樑與橫樑之結合部安裝有角撑板。角擇板之下 緣部係點焊接於橫樑的上部， 壁點焊接於上壁。藉殘留於作 其外側緣部係與側樑的内側1240689 Description of the invention: [Technical Field of the Invention 3 Field of the Invention The present invention relates to the structure of a front body of a vehicle having side beams and cross beams. BACKGROUND OF THE INVENTION The front body structure of an automobile includes side beams arranged along the front and back directions of both sides of the vehicle body, and 10 beams arranged along the width direction of the vehicle body to connect front ends of the side beams. Each cross section of the side beam and the cross beam is a hollow quadrangular shape, and the bottom surface of the side beam is aligned with the top surface of the cross beam (for example, refer to JP 6-26468). The side beams are formed into a hollow rectangular shape with a cross section, and the upper wall and the inner wall are left at the front end and an opening is provided. The beam is formed by an inverted U-shaped beam body and a closing plate (bottom plate) which closes the lower opening of the beam body. The upper surfaces of the two ends of the beam are close to the rear side of the part that is opened below the side beam and are welded to the inner side wall. A gusset is installed at the joint of the side beam and the beam. The lower edge of the corner plate is spot welded to the upper part of the beam, and the wall spot welded to the upper wall. By remaining on the inside of the outer edge system and side beams
樑之部分。 重疊於側 复、、彖。底壁後緣的焊接凸緣係點焊接 其他祥接凸緣難焊接於分別重疊於側 1240689 開口於側樑的外方向之部分係以延伸面板塞住，且延 伸面板具有在上緣、前緣、後緣朝車體的寬方向向外折返 之上緣凸緣、前緣凸緣、後緣凸緣。上緣凸緣係與側樑的 上面之外側緣部點焊接，而前緣凸緣係與閉塞側樑的前端 5 之閉塞板的前側壁之外側緣部點焊接，並且後緣凸緣係在 側樑的外側壁前端與朝車體的寬方向向外彎曲之凸緣點焊 接。另外，設置於橫樑的兩端之凸緣係點焊接於各側樑之 延伸面板上。 在上述構造中，相對於橫樑由側樑的下側安裝，角撐 10 板的外側緣部之上端係由側樑的上壁之上面覆蓋來進行安 裝。從而，在焊接側樑與橫樑之後，必須以點焊接安裝角 撐板、或在側樑在點焊接安裝角撐板之後焊接側樑與橫 樑、或由側樑的前方插入以點焊接安裝角撐板之橫樑，焊 接側樑與橫樑之順序裝配。 15 但是，由於橫樑與角撐板之接合部遠離面向橫樑的兩 端外側之開口部，所以要以對齊側樑與橫樑之狀態進行點 焊接是困難的。另外，在橫樑預先點焊接角撐板係必須在 裝配線中於對齊側樑與橫樑之定位裝置中進行複雜之移 動。 20 依照在側樑焊接橫樑之樑本體，接著安裝角撐板之 後，將閉鎖板安裝於本體樑的下面之順序裝配，藉此可以 輕易地接近橫樑與角撐板的接合部。但是，在該裝配步驟 中，由於必須依序地安裝各構件，所以無法縮短製程。 【發明内容】 6 1240689 發明概要 因此，本發明之目的係提供一種可以提高結合部的剛 性，縮短裝配製程之前車體構造。 本發明之前車體構造，包含側樑、橫樑與角撐片。側 5 樑係在車輛前部的兩側沿著車體的前後方向配置成一對， 且側樑具有上壁；於垂直方向延伸並連接於前述上壁之車 寬方向内側端之内側壁；及連接於前述内側壁下端且於水 平方向延伸之下壁。橫樑具有接合於前述側樑的前述下壁 之頂壁、及前後方向的前側壁及後側壁，並且沿著車體的 10 寬方向配置。角撐片係結合於前述側樑的前述内側壁及前 述橫樑的前述頂壁，且角撐片超越前述内側壁的上端延伸 於上方。依據以上之構造，在預先將角撐片安裝於橫樑之 狀態下，可以由側樑的下方向對齊橫樑，定位裝置的動作 變簡單。 15 圖式簡單說明 第1圖為本發明之一實施形態之前車體構造之立體圖。 第2圖為第1圖所示之前車體之分解立體圖。 第3圖為裝配第2圖所示之側樑與頭燈支撐架之側樑總 成之立體圖。 20 第4圖為裝配第2圖所示之橫樑與角撐片與運送托架後 成為橫樑總成狀態之立體圖。 第5圖為第3圖所示之側樑總成與第4圖所示之橫樑總 成之接合處所之立體圖。 第6圖為在第5圖所示之狀態下進一步安裝前端外側壁 1240689 之狀態之立體圖。 不之側樑與橫樑之 第7圖為沿著第6圖中之F7-F7所顯 接合部之截面圖。 【實施方式】 較佳實施例之詳細說明 參照第1圖至第7圖說明本發明之一』 貫施形態之前車體The part of the beam. Overlapping on the side. Welding flanges at the bottom edge of the bottom wall are spot welded. Other abutment flanges are difficult to weld. The parts overlapping on the side 1240689 and opening in the outer direction of the side beam are plugged with extension panels. The extension panels have upper and front edges. The rear edge is folded back toward the width direction of the vehicle body to return to the upper edge flange, the front edge flange, and the rear edge flange. The upper edge flange is spot welded to the upper outer side edge portion of the side beam, and the front edge flange is spot welded to the outer side edge portion of the front side wall of the occlusion plate that closes the front end 5 of the side beam, and the rear edge flange is attached to The front end of the outer side wall of the side beam is spot welded to a flange which is bent outward in the width direction of the vehicle body. In addition, flanges provided at both ends of the beam are spot-welded to the extension panels of each side beam. In the above structure, the cross beam is installed from the lower side of the side beam, and the upper end of the outer edge portion of the gusset 10 plate is covered with the upper surface of the upper wall of the side beam for installation. Therefore, after the side beams and the cross beams are welded, the gussets must be installed by spot welding, or after the side beams are spot welded and the gussets are installed, the side beams and the cross beams can be welded or inserted from the front of the side beams to be installed by spot welding The beams of the plate, welded side beams and beams are assembled sequentially. 15 However, since the joint between the beam and the gusset is far from the openings facing the outside of the two ends facing the beam, it is difficult to perform spot welding with the side beams and beams aligned. In addition, pre-spot welding of the gussets on the cross beams must be performed in a complicated manner in an assembly line in a positioning device that aligns the side beams with the cross beams. 20 Weld the beam body of the crossbeam to the side beam, then install the gusset plate, and then install the locking plate under the body beam to assemble it, so that the joint between the beam and the gusset plate can be easily accessed. However, in this assembly step, since the components must be sequentially installed, the manufacturing process cannot be shortened. [Summary of the Invention] 6 1240689 Summary of the Invention Therefore, the object of the present invention is to provide a vehicle body structure that can improve the rigidity of the joint portion and shorten the assembly process. The vehicle body structure of the present invention includes side beams, cross beams and gussets. The side 5 beams are arranged in a pair along the front-back direction of the vehicle body on both sides of the front part of the vehicle, and the side beams have upper walls; the inner side walls extending in a vertical direction and connected to the inner side ends in the width direction of the upper walls; and The lower wall is connected to the lower end of the inner wall and extends in the horizontal direction. The cross member has a top wall joined to the lower wall of the side member, a front side wall and a rear side wall in the front-rear direction, and is arranged along the 10-width direction of the vehicle body. The gusset piece is connected to the inner side wall of the side beam and the top wall of the cross beam, and the gusset piece extends above the upper end of the inner side wall. According to the above structure, when the gusset is installed on the beam in advance, the beam can be aligned from the lower direction of the side beam, and the operation of the positioning device becomes simple. 15 Brief Description of Drawings Figure 1 is a perspective view of the structure of a vehicle body before an embodiment of the present invention. FIG. 2 is an exploded perspective view of the front vehicle body shown in FIG. 1. Fig. 3 is a perspective view of the side beam assembly assembled with the side beam shown in Fig. 2 and the headlight support frame. 20 Fig. 4 is a perspective view of the state of the beam assembly after assembling the beam, gusset and transport bracket shown in Fig. 2. Figure 5 is a perspective view of the joint of the side beam assembly shown in Figure 3 and the beam assembly shown in Figure 4. FIG. 6 is a perspective view of a state where the front end side wall 1240689 is further installed in the state shown in FIG. 5. Figure 7 of the side beams and crossbeams is a cross-sectional view along the joint shown by F7-F7 in Figure 6. [Embodiment] A detailed description of a preferred embodiment Referring to FIG. 1 to FIG. 7, one of the present invention will be described.
10中心為内方向（内側）。第1圖所示之前車體！，包含側樑2、 橫樑3、角撐片4、頭燈支撐架5與前端上桿6等作為負擔汽 車強度之構造構件。 ° 如第2圖所示，側樑2係沿著前車體丨的前後方向配置於 左右兩側，製造成左右對稱。各側樑2係組合内部21與外部 15 22所構成。内部21包含上壁23與下壁24，外部22包含外側 壁26。外部22的前緣係設置於比内部21的前緣後退之位 置。結果，如第3圖所示，側樑2的前端部2a形成外側開口 之狀態。 在上壁23的外側緣及外側壁26的上緣形成有上部 20 23a、26a，且在下壁24的外側緣及外側壁26的了緣形成有 下部凸緣24a、26b。上部凸緣23a、26a由前端到後端之中 途改變方向，由前端至中途延伸至外側，由中途至後端延 伸至上方。下部凸緣24a、26b延伸於下方。内部21與外部 22對齊上部凸緣23a、26a及下部24a、26b後，進行點焊接乂。 1240689 另外，安裝有前端外側壁7，使其塞住位於外部22的前 緣前方之開口之部分。在前端外側壁7之後側緣、上緣及前 側緣，設置有向外側延伸之後部凸緣7a、上部凸緣7b及前 端凸緣7c。後部凸緣7a係與設置於外側壁26的前緣之前部 5 凸緣26c作點焊接X，且上部凸緣7b係與設置於上壁23的外 側緣之上部凸緣23a作點焊接X。另外，前端外側壁7係與下 壁24的下部凸緣24a作點焊接X，並且超過下壁24延伸於下 方。又，在側樑2的内部安裝有補強構件。前端凸緣7c係設 置成容易阻擋車輛衝撞時之負荷的輸入，用以確實地吸收 10 對側樑2之衝擊。 橫樑3係位置於靠近前車體1之前面，且沿著寬方向配 置。橫樑3係組合上部31與下部32所構成，且上部31包含頂 壁33 '前側壁34與後側壁35，而下部32包含底壁36。在前 側壁34與後側壁35之下緣、與底壁36的前緣及後緣分別設 15 置有延伸於下方之凸緣34a、35a、36a、36b。前側壁34的 凸緣34a與底壁36之凸緣36a、後側壁35之凸緣35a與底壁36 之凸緣36b係相互作點焊X，且頂壁33之兩端部33a係在側樑 2之前端部2a之下壁24作點焊接X。 另外，在前側壁34的兩端設置延伸於前方之前方凸緣 2〇 34b ’且在後側壁35的兩端設置延伸於後方之後方凸緣 35^’而在底壁36的兩端設置有延伸於下方之下方凸緣 36c。前方凸緣34b、後方凸緣35b、下方凸緣36c係與前端 外側壁7作點焊接X。 橫樑3係由兩端向下方圓滑的彎曲之後，再度向内側圓 l24〇689 /月的曾曲。如第7圖所示，由向下部32的下方之彎曲朝向内 側之幫曲之彎曲部32a，運送托架8點焊接X於下部32之底壁 36與由前緣及後緣延伸之凸緣36a、36b。運送托架8係由下 432向下方延伸。在此，所謂運送托架8，係指在以船等輸 迗車輛等時用以固定於船體使用之托架。 角撐片4係橫跨安裝於橫樑3與側樑2之接合部。如第7 戶斤— 身 不’角撐片4係相對橫樑3，在由上部31的兩端向下方 3曲之中途，在頂壁3 3與前側壁3 4與後側壁3 5點焊接X基端 4a，且相對側樑2，在内側壁25點焊接χ凸緣牝。另外，角 1〇撐片4係超越内側壁25的上端延伸於上方。 頭燈支撐架5係在插入内側壁25與角撐片4之間之狀態 作點焊接X，並且延伸至上壁23上方。另外，於上壁23設置 有肋條5a ’且設置於腳部之凸緣5b點焊接X於上壁23。 刖端上桿6係橫跨於左右之頭燈支撐架5的上端固定。 15 其夂，針對上述之前車體1之裝配順序加以說明。側樑 2之内部21係在安裝補強構件之後，如第3圖所示，點焊接χ 外部22。另外，頭燈支撐架5點焊接X於内部21的前端部2a。 項、且支擇木5與外部22無論哪邊先安裝於内部21均可。 又，側“2之内部21與外部22及頭燈支撐架5組合成側樑總 20 成。 如第4圖所示，角撐片4係安裝於橫樑3之上部31，且運 运托架8係與下部32之底壁36作點焊接X。安裝角撐片4與運 运托架8之後，橫樑3之上部31與下部32作點焊接χ。接著， 組口 ki卞3之上部31與下部32、角撐片4、運送托架^以構成 10 1240689 橫樑總成。 左右之側樑總成係呈以一定之間隔配置之狀態 ，且由 下舉起以組合橫樑總成。如第5圖所示，分別點焊接X頂壁 33與下壁24、及角撐片4與頭燈支撐架5與内側壁“之重疊 5 部分。 前端外側壁7係以例如以下之順序作點焊接乂。如第6 圖所不，後部凸緣7a係在與設置於外側壁26的前緣之前部 凸緣26c作點焊接X之後，將上部凸緣几與設置於上壁巧之 外側、’彖之上部凸緣23a作點焊接X。最後，將橫樑3的前方凸 10緣b後方凸緣35b、下方凸緣36c及側樑2的下壁24的下 部凸緣24a與前端外側壁作點烊接X。 又，在側樑2的前端之開口以其他方法安裝如第1圖所 示之凸緣9，且在該凸緣9上安裝緩衝器撐條1〇。 如以上構成之前車體1，在接合側樑2與橫樑3之前，將 15頭^且支撐為、5安裝於側樑2，且將角撐片4及運送托架8安裝 於杈樑3上。而且，由於角撐片4超越側樑2之内側壁25的上 端朝上方延伸，所以可以由側樑2的下方舉起組合橫樑3。 從而，在裝配線中，由於可以將側樑總成搬送至前方，且 由下方對背橫樑總成，所以定位裝置的動作簡單。另外， 20由於將裝配橫樑3之上部31及下部32、角撐片4、運送托架8 之橫樑總成安裝於側樑總成，所以可以以側樑2之裝配線與 另一I配線裝配橫樑總成。從而，裝配效率佳，可以減少 生產成本。 另外，内部21的上壁23與内側壁25與下壁24之材料連 1240689 接至前端為止。從而，假設朝前方衝擊與偏向衝擊時，則 對前方向之扭曲強度較高。另外，假設來自寬方向衝擊， 由於橫樑3之構件連接至側樑2的前端外側壁7，所以扭曲強 度較高。 5 針對橫樑3之安裝部，藉沿著前後方向一定側樑2之前 端部2a之寬方向的截面形狀，可以容易調節前端懸垂物長 度。也就是，對於不同尺寸之引擎可以輕易地調節前車體1 之尺寸。 頭燈支撐架5由於係作為其他零件而安裝於側樑2，所 10 以可因應規格選擇安裝不同大小（高度）之頭燈支撐架5。 由於運送托架8係如第7圖所示安裝於由下部32向下方 之彎曲朝著向内側之彎曲之彎曲部，所以可以將作用於運 送托架8之力由橫樑3傳達分散至側樑2。另外，運送托架8 的形狀為左右對稱，可以降低生產成本。 15 側樑2與橫樑3的接合係在下壁24與頂壁33、橫樑端部 (前側壁34、後側壁35、底壁36)與前端外側壁7、上部31與 角撐片4、角撐片4與内側壁25的多數處所接合，由於點焊 接X點數較多，所以接合強度較高。 又，在本實施形態中，接合雖以點焊接進行，不過亦 20 可使用YAG雷射進行定位焊接。 本發明之前車體構造包含有側樑與橫樑與角撐片。側 樑係沿著車輛前部的兩側之車體的前後方向配置，且具有 上壁；延伸於垂直方向連接於該上壁的車寬方向内側端之 内側壁；及連接於内側壁下端延伸於水平方向之下壁。橫 12 1240689 樑係沿著車體的寬方向配置，且具有接合於側樑的下壁之 頂壁、與前後方向的前側壁及後侧壁。角撐片係結合於側 樑的内側壁與橫樑的頂壁，超越内側壁的上端朝上方延 伸。具有以上的構成之前車體構造，由於可以在預先將角 5 撐片安裝於橫樑之狀態下，由侧樑的下方向對齊橫樑，所 以定位裝置的動作變簡單。10 Center is inward (inside). Pictured before the body! It includes side beams 2, cross beams 3, gussets 4, headlight support 5 and front pole 6 as structural members to bear the strength of the car. ° As shown in Fig. 2, the side members 2 are arranged on the left and right sides along the front-rear direction of the front body, and are manufactured to be left-right symmetrical. Each side beam 2 is composed of an inner 21 and an outer 15 22. The inner portion 21 includes an upper wall 23 and a lower wall 24, and the outer portion 22 includes an outer wall 26. The leading edge of the outer portion 22 is set back from the leading edge of the inner portion 21. As a result, as shown in Fig. 3, the front end portion 2a of the side sill 2 is in a state of being opened outward. Upper sides 23a and 26a are formed on the outer edge of the upper wall 23 and the upper edge of the outer side wall 26, and lower flanges 24a and 26b are formed on the outer edge of the lower wall 24 and the outer edge of the outer side wall 26. The upper flanges 23a and 26a change their direction from the front end to the rear end, and extend from the front end to the middle to the outside, and from the middle to the rear end to the top. The lower flanges 24a and 26b extend downward. The inside 21 and the outside 22 are aligned with the upper flanges 23a, 26a and the lower portions 24a, 26b, and then spot-welded. 1240689 In addition, a front outer wall 7 is installed so as to plug a portion located in front of the front edge of the outer 22. The rear side edge, the upper edge, and the front side edge of the front-end outer side wall 7 are provided with a rear flange 7a, an upper flange 7b, and a front-end flange 7c extending outward. The rear flange 7a is spot-welded X to the front 5 flange 26c provided on the front edge of the outer side wall 26, and the upper flange 7b is spot-welded X to the upper flange 23a provided on the outer edge of the upper wall 23. The front outer wall 7 is spot-welded X to the lower flange 24a of the lower wall 24 and extends below the lower wall 24. A reinforcing member is mounted inside the side member 2. The front flange 7c is provided so as to easily block the input of a load in the event of a collision of the vehicle so as to surely absorb the impact of the 10 side beams 2. The cross beam 3 is located near the front face of the front body 1 and is arranged in a wide direction. The beam 3 is composed of an upper portion 31 and a lower portion 32, and the upper portion 31 includes a top wall 33 ', a front side wall 34 and a rear side wall 35, and the lower portion 32 includes a bottom wall 36. The lower edges of the front side wall 34 and the rear side wall 35, and the front and rear edges of the bottom wall 36 are respectively provided with flanges 34a, 35a, 36a, and 36b extending downward. The flange 34a of the front side wall 34 and the flange 36a of the bottom wall 36, the flange 35a of the rear side wall 35, and the flange 36b of the bottom wall 36 are spot welded to each other X, and both ends 33a of the top wall 33 are on the side The lower wall 24 of the front end 2a of the beam 2 is spot-welded X. In addition, both ends of the front side wall 34 are provided with a front front flange 2034b ′ extending at the front, and both ends of the rear side wall 35 are provided with a rear rear flange 35 ^ ′, and two ends of the bottom wall 36 are provided with a bottom extending Lower flange 36c. The front flange 34b, the rear flange 35b, and the lower flange 36c are spot-welded X to the front outer wall 7. The beam 3 is curved smoothly from both ends downward, and then rounded to the inside of Zengqu 1224689 / month. As shown in FIG. 7, from the bending portion 32 a of the downward bending toward the inward bending portion 32 a of the downward portion 32, the carrier bracket 8 is welded to the bottom wall 36 of the lower portion 32 and the flange extending from the front edge and the rear edge. 36a, 36b. The transport bracket 8 extends downward from the lower 432. Here, the transport bracket 8 refers to a bracket used for fixing to a hull when a vehicle or the like is transported to a vehicle. The gusset 4 is installed across the joint between the cross beam 3 and the side beam 2. For example, the seventh household jin—the body angle bracket 4 is opposite to the beam 3, and midway from the two ends of the upper part 31 to the lower part 3, the top wall 3 3 and the front side wall 3 4 and the rear side wall 3 are welded at 5 points X The base end 4a and the side beam 2 are welded with χ flange 点 at 25 points on the inner side wall. In addition, the corner 10 stay 4 extends upward beyond the upper end of the inner side wall 25. The headlamp support 5 is spot-welded X in a state where it is inserted between the inner side wall 25 and the gusset 4 and extends above the upper wall 23. In addition, a rib 5a 'is provided on the upper wall 23, and a flange 5b provided on the leg is spot-welded X to the upper wall 23. The upper end pole 6 is fixed across the upper ends of the left and right headlight support frames 5. 15 Next, the assembly sequence of the vehicle body 1 described above will be described. The inner part 21 of the side member 2 is spot-welded x the outer part 22 after the reinforcing member is installed, as shown in FIG. 3. In addition, the headlight support 5 is spot-welded X to the front end portion 2 a of the inner portion 21. In addition, the support 5 and the outer 22 may be installed on the inner 21 first. In addition, the inner part 21 of the side 2 is combined with the outer part 22 and the headlight support frame 5 to form a side beam assembly 20. As shown in FIG. 4, the gusset 4 is installed on the upper part 31 of the beam 3, and the transportation bracket The 8 series is spot welded X to the bottom wall 36 of the lower part 32. After the gusset 4 and the transport bracket 8 are installed, the upper part 31 of the cross beam 3 is spot welded to the lower part 32. Then, the upper part 31 of the mouth ki 口 3 And the lower part 32, the gusset 4, the transport bracket ^ to form 10 1240689 beam assembly. The left and right side beam assemblies are arranged at a certain interval, and are lifted down to combine the beam assembly. As shown in FIG. 5, the X top wall 33 and the lower wall 24 are spot welded, and the gusset 4 and the headlight support 5 and the inner wall are overlapped with each other. The front outer wall 7 is spot-welded in the following order, for example. As shown in FIG. 6, the rear flange 7a is spot-welded to the front flange 26c provided on the front edge of the outer side wall 26, and then the upper flange is disposed on the outer side of the upper wall. The upper flange 23a is spot-welded X. Finally, the front flange 10b of the cross beam 3, the rear flange 35b, the lower flange 36c, and the lower flange 24a of the lower wall 24 of the side beam 2 are connected to the outer wall of the front end by points X. In addition, a flange 9 as shown in FIG. 1 is attached to the opening at the front end of the side member 2 by another method, and a bumper stay 10 is attached to the flange 9. The front body 1 is configured as above. Before joining the side beams 2 and the cross beams 3, 15 heads and 5 are mounted on the side beams 2, and the gussets 4 and the transport brackets 8 are mounted on the branch beams 3. . Further, since the gusset 4 extends upward beyond the upper end of the inner side wall 25 of the side beam 2, the combination beam 3 can be lifted from below the side beam 2. Therefore, in the assembly line, since the side beam assembly can be transported to the front and the cross beam assembly can be faced from below, the operation of the positioning device is simple. In addition, since the upper beam assembly 31 and the lower part 32, the gusset 4 and the transport bracket 8 of the assembling beam 3 are installed on the side beam assembly 20, the beam can be assembled with another I wiring by the assembly line of the side beam 2 Assembly. Therefore, the assembly efficiency is good, and the production cost can be reduced. In addition, the material of the upper wall 23, the inner wall 25, and the lower wall 24 of the inner part 21 is connected to the front end 1240689. Therefore, assuming forward impact and deflection impact, the twist strength to the forward direction is high. In addition, assuming a wide-direction impact, the members of the cross beam 3 are connected to the front outer side wall 7 of the side beam 2, so the twisting strength is high. 5 For the mounting portion of the cross beam 3, the cross-sectional shape of the front end portion 2a of the side beam 2 is fixed along the front-back direction, so that the length of the front suspension can be easily adjusted. That is, the size of the front body 1 can be easily adjusted for engines of different sizes. Since the headlight support 5 is mounted on the side beam 2 as other parts, a headlight support 5 of a different size (height) can be selected and installed according to the specifications. Since the transport bracket 8 is mounted on the bent portion bent downward from the lower portion 32 toward the inward bend as shown in FIG. 7, the force acting on the transport bracket 8 can be transmitted to the side beam by the cross beam 3 and dispersed. 2. In addition, the shape of the transport bracket 8 is symmetrical to the left and right, which can reduce production costs. 15 The joints of the side beams 2 and the cross beams 3 are connected to the lower wall 24 and the top wall 33, the ends of the cross beams (front side 34, rear side 35, bottom wall 36) and the front outer side wall 7, upper part 31 and gusset 4, gusset The sheet 4 is bonded to most locations of the inner wall 25, and since the number of spot welding X points is large, the bonding strength is high. In the present embodiment, although the joining is performed by spot welding, it is also possible to perform tack welding using a YAG laser. The vehicle body structure before the present invention includes side beams, cross beams and gussets. The side beams are arranged along the front-rear direction of the vehicle body on both sides of the front of the vehicle and have an upper wall; an inner side wall extending in a vertical direction to the inner side end of the vehicle width direction connected to the upper wall; and extending to the lower end of the inner side wall In the horizontal direction below the wall. Transverse 12 1240689 The beam is arranged along the width of the vehicle body, and has a top wall joined to the lower wall of the side beam, and front and rear side walls in the front-rear direction. The gusset is connected to the inner wall of the side beam and the top wall of the beam, and extends upward beyond the upper end of the inner wall. With the above structure of the previous body structure, since the corner brackets can be installed on the cross beam in advance, the cross beam can be aligned from the lower direction of the side beam, so the operation of the positioning device becomes simple.
I：圖式簡單說明I 第1圖為本發明之一實施形態之前車體構造之立體圖。 第2圖為第1圖所示之前車體之分解立體圖。 10 第3圖為裝配第2圖所示之側樑與頭燈支撐架之側樑總 成之立體圖。 第4圖為裝配第2圖所示之橫樑與角撐片與運送托架後 成為橫樑總成狀態之立體圖。 第5圖為第3圖所示之側樑總成與第4圖所示之橫樑總 15 成之接合處所之立體圖。 第6圖為在第5圖所示之狀態下進一步安裝前端外側壁 之狀態之立體圖。 第7圖為沿著第6圖中之F7-F7所顯示之側樑與橫樑之 接合部之截面圖。 20 13 1240689 【圖式之主要元件代表符號表】 1…前車體 21···内部 2···側樑 22…外部 2a···前端部 23···上壁 3…橫樑 24···下壁 4···角撐片 25···内側壁 4a…基端 26···外侧壁 4b···凸緣 23a、26a···上部凸緣 5···頭燈支撐架 24a、26b···下部凸緣 5a···肋條 31···上部 5b···凸緣 32···下部 6···前端上桿 33…頂壁 7…前端外側壁 34···前側壁 7a…後部凸緣 34a、35a、36a、36b···凸緣 7b…上部凸緣 34b…前方凸緣 7c…前端凸緣 35…後側壁 8…運送托架 35b…後方凸緣 9···凸緣 36…底壁 10…緩衝器撐條 36c···下方凸緣 14I: Brief description of the drawings I FIG. 1 is a perspective view of a vehicle body structure before an embodiment of the present invention. FIG. 2 is an exploded perspective view of the front vehicle body shown in FIG. 1. 10 Figure 3 is a perspective view of the side beam assembly assembled with the side beam shown in Figure 2 and the headlight support frame. Fig. 4 is a perspective view showing the state of the beam assembly after assembling the beam, gusset and transport bracket shown in Fig. 2. Figure 5 is a perspective view of the joint of the side beam assembly shown in Figure 3 and the beam assembly shown in Figure 4. Fig. 6 is a perspective view showing a state where the front-end outer wall is further installed in the state shown in Fig. 5; Fig. 7 is a cross-sectional view of the joint portion of the side beam and the cross beam shown along F7-F7 in Fig. 6. 20 13 1240689 [Representative symbols for main components of the drawing] 1 ... Front body 21 ... Inner 2 ... Side beam 22 ... Outer 2a ... Front end 23 ... Upper wall 3 ... Cross beam 24 ... · Lower wall 4 ·· Gussing piece 25 ·· Inner side wall 4a ... Base end 26 ·· Outer side wall 4b ·· Flanges 23a, 26a ·· Upper flange 5 ·· Headlight support 24a 26b ... Lower flange 5a ... Rib 31 ... Upper 5b ... Flange 32 ... Lower 6 ... Front pole 33 ... Top wall 7 ... Front outer side wall 34 ... Front Side wall 7a ... rear flanges 34a, 35a, 36a, 36b ... flange 7b ... upper flange 34b ... front flange 7c ... front flange 35 ... rear wall 8 ... transport bracket 35b ... rear flange 9 ... · Flange 36… Bottom wall 10… Buffer stay 36c ··· Lower flange 14