1222413 玖、發明說明 【發明所屬之技術領域】 本發明關於一開啓支架安裝構造，用於車身後部具有一 尾門的車輛。 【先前技術】 圖5 A、圖5 B及5 C爲一傳統車輛開啓支架安裝構造的 示意圖。圖5 A爲一車輛1 00之後部的透視圖，顯示一尾 門102係設置在車輛100之後車體表面101處，用以維持 尾門102於開啓狀態的開啓支架103、103係安裝於車體後 部的後柱104、104上。尾門102係一後車門，用以開啓及 關閉後車體表面1 0 1的開口 1 05。 圖5 B爲圖5 A中沿B _ B線的剖面圖，顯示開啓支架1 〇 3 的側端1 0 3 a之第一安裝實施例。各個後柱1 0 4藉由連接位 於車體側之外部板1 1 1、面對車輛行李箱的內部板n 2、及 位於車體後側的槽形板i丨3而形成一封閉交叉部分。在第 一安裝實施例中，一加強組件1 1 4用於具有通道形剖面之 槽形板1 1 3的凸緣1 1 3a之後表面處，且開啓支架i 03的側 端1 0 3 a係安裝於槽形板1 1 3和加強組件1 1 4上。 由於下列原因設置加強組件1 1 4。負荷在軸向方向（圖中 雙箭頭所指示的方向）上作用於開啓支架1〇3的側端103a 上。負何於通道形剖面之槽形板1 1 3的凸緣1 1 3 a處引起彎 曲力矩。爲了維持凸緣1 1 3 a的剛性以抵抗彎曲力矩，應用 加強組件114於安裝了開啓支架1〇3之凸緣113a的部份 1 1 5上，以作爲加強之用。將加強組件丨丨4應用於安裝了 6 312/發明說明書(補件)/92-04-92100791 1222413 開啓支架1 Ο 3之槽形板1 1 3的該部份1 1 5可增加該部分的 剛性。 圖5 C顯示開啓支架1 〇 3的該側端1 〇 3 a之第二安裝實施 例，其對應於圖5 B中的構造。該後柱1 04的構造與圖5 B 中的該等構造相同。在第二安裝實施例中，開啓支架1〇3 的側端103a係安裝於一具有相當大厚度的支架116上，且 該支架1 1 6以螺栓1 1 7固定至槽形板1 1 3的腹板1 1 3b的後 表面上。 在顯示於圖5 B的第一實施例中，彎曲力矩發生於通道 形剖面之槽形板1 1 3的凸緣1 1 3 a處。爲了維持凸緣1 1 3 a 的可彎曲剛性，簡單地於凸緣1 1 3 a的後表面設置加強組件 1 1 4。視彎曲力矩的大小，必須增加槽形板1 1 3以及加強組 件1 1 4的厚度，但卻會導致車輛車體重量增加。 在顯示於圖5 C的第一實施例中，沒有彎曲力矩發生於 通道形剖面之槽形板1 1 3的凸緣1 1 3 a處。然而，當尾門 1 02打開，可從外面看到支架1 1 6，因此在車輛的外觀上仍 有改善的空間。 【發明內容】 因此本發明之目的爲在安裝了開啓支架之槽形板的部 份提供一增加剛性的方法，並提供車輛較佳的外觀及減少 車身重量。 根據本發明，提供一車輛開啓支架安裝構造，其包含： 一後柱，藉由連接車體側邊處之外部板、面對車輛行李箱 的內部板、及位於車體後側的槽形板而形成一封閉截面； 312/發明說明書(補件)/92-04-92100791 1222413 一開啓支架安裝於槽形板上以保持尾門於開啓狀態；一加 強組件被用於安裝了該開啓支架之槽形板的一部份之後表 面處，並亦固接於該內部板。 該槽形板之安裝開啓支架的部分與該加強組件結合作 爲強化之用，且該加強組件亦和與安裝開啓支架的部分有 一距離的內部板結合，如此一來，從開啓支架而來作用在 槽形板上的負荷可被允許從槽形板經由加強組件而作用在 內部板上。其結果爲，作用在槽形板上的負荷可被加強組 件與內部板的複雜結構所承受。因此可簡單地確保槽形板 的剛性’而無須增加槽形板以及加強組件的厚度或複雜化 其構造。隨著車體重量減少，槽形板之安裝開啓支架部分 的剛性可因此增加。 在槽形板的後表面處提供加強組件可避免當尾門打開 時，可從外面看到加強組件。藉此確保車輛的美觀外觀。 【實施方式】 圖1係利用本發明之車輛後部的透視圖，顯示一尾門（後 門）1 4被提供於車輛1 〇之後車體表面1 1 a處。 更明確地，車輛1 0係一可掀後車蓋式的車輛或類似者， 包括形成於後車體表面11a之開口 12,尾門14利用鉸鏈（未 圖示）以可向上及向下搖擺的方式安裝在開口 12上方的車 頂架1 3上，如此，開口 12可由尾門1 4所開啓及關閉，以 及左側及右側開啓支架60、60，其用以保持尾門1 4於開 啓狀態，係安裝於車體1 1後部的左側及右側後柱1 5、1 5 之後表面。該開啓支架60、60係爲支持柱，於第一端61、 8 312/發明說明書(補件)/92-04-92100791 1222413 6 1處耦合至後柱1 5、1 5，且於第二端6 2、6 2處耦合至尾 門14。 現在開啓支架60、60的安裝構造將於以下詳細描述。 圖2係根據本發明的左側開啓支架安裝構造的透視圖， 顯示以虛線表示之左側開啓支架的第一端係安裝於左側後 柱1 5的上部部份。一加強組件50被提供於後柱丨5的內部。 圖3係沿圖2中3-3線段的剖面圖，顯示後柱丨5藉由連 接位於車體側之外部板20、面對車輛行李箱1 6的內部板 30、及位於車體後側的槽形板40而形成一封閉截面的本 體。該後柱1 5於平面視圖上具有一實質的三角形狀，縱向 地延伸且向前變尖細。外部板20、內部板30及槽形板40 係由鋼板彎製而成。內部板30的板厚比外部板20及槽形 板4 0的板厚要厚。 外部板20具有一實質L形剖面本體，從前端的第一凸 緣2 1向後延伸至從後端向車輛行李箱1 6延伸的第二凸緣 22 ° 內部板3 0具有一實質倒L形剖面本體，從前端的第一 凸緣3 1向後且朝著一曲線的橫向中心延伸至從後端向後 延伸的第二凸緣3 2。第二凸緣3 2的位置比外部板20的第 二凸緣22更接近橫向中心。 槽形板40具有一溝槽狀的剖面本體，其包括腹板4 1及 第一凸緣42及位於WEB1相對側的第二凸緣43。該第一 與第二凸緣4 2、4 3的末端朝向後方。 組件20、30、40藉由（1)連接內部板30的第一凸緣31 9 312/發明說明書(補件)/92-04-92100791 1222413 至外部板2 0的第一凸緣2 1，（ 2)連接槽形板4 0的第一凸 緣42至外部板20的第二凸緣22以及（3)連接內部板30 的第二凸緣32至槽形板40的第二凸緣43而組合至後柱 15 ° 本發明的槽形板40的特徵在於加強組件50係設置於開 啓支架60安裝於其上（見圖2)之一部份44的後表面45， 且加強組件5 0亦連接於內部板3 0內部的後表面3 3。 更明確地，加強組件5 0藉由將一鋼板彎曲成一有實質l 狀的本體，該本體包括第一凸緣51及第二凸緣52。該第 一凸緣5 1被安裝且連結至槽形板40的第一凸緣42的後表 面4 5，而第二凸緣5 2以螺栓5 3而被安裝且連結至內部板 3 0內部的後表面3 3。元.件符號5 4代表固定至第二凸緣之 後表面的螺帽，供容納旋入其中的螺栓5 3。如圖2所示， 有上部與下部兩個部份以螺栓5 3來固定。 後柱1 5與加強組件5 0的組裝過程如下所述。 首先，將加強組件5 0的第一凸緣5丨安裝且連結至槽形 板40的第一凸緣42的後表面45。 接著’將槽形板40的第一凸緣42連接至外部板2〇的第 二凸緣2 2。 然後，將內部板3 0的第一凸緣3 1連接至外部板2 0的第 一凸緣21，槽形板40的第二凸緣43連接至內部板3〇的 第二凸緣32。 最後’將內部板3 0以螺栓5 3和螺帽5 4固定至加強組件 50的第二凸緣52。 10 312/發明說明書(補件)/92-〇4_92!〇〇791 1222413 此過程幫助加強組件5 0安裝於後柱1 5內。 圖4係圖2中沿線4-4的剖面圖，顯示開啓支架60的第 一端6 1安裝於介於槽形板40與加強組件5 0間的接合部 份。該第一端61係整體地提供一安裝螺栓63。 更明確地，螺帽5 6固定至加強組件5 0的第一凸緣5 1 的後表面，該安裝螺栓63係穿過介於加強組件50的第一 凸緣5 1與槽形板40的第一凸緣42之間的相接部份，且該 螺帽56與該安裝螺栓63彼此固接。開啓支架60的第一端 61可安裝至該安裝部份44。 現在，具有上述結構的開啓支架安裝構造的功能將參考 圖4加以說明。 加強組件5 0係設置於安裝了開啓支架60之槽形板40 的第一凸緣4 2之部份4 4上。加強組件5 0，以與安裝了開 啓支架60之該部份44保持一大厚度距離的方式，亦連接 於內部板3 0。 該安裝螺栓63在與開啓支架60延伸方向（與圖紙垂直的 方向）相垂直的方向上延伸。該開啓支架60係繞著固定於 槽形板40的安裝螺栓63上下地搖擺。在徑向方向（圖中雙 箭頭所示的方向）上的一負荷Π因此作用在開啓支架60的 第一端61。該負荷fl通過安裝螺栓63作用在槽形板40 的第一凸緣42上且更從第一凸緣42通過加強組件50上作 用在內部板30上。 作用在槽形板40的負荷Π可被加強組件50與內部板 3 0的一複雜結構所承受。因此槽形板4 〇的剛性可簡單地 11 312/發明說明書(補件)/92-04-92100791 1222413 確保，而不需增加槽形板4 0與加強組件5 0的厚度，或將 其構造複雜化。因此車體重量減少的同時，槽形板40之連 接開啓支架60的該部份44的剛性增加。 此外，由於提供加強組件50於安裝了開啓支架60之槽 形板40的部份44的後表面45處，可避免當尾門14(見圖 1)打開時，可從外面看到加強組件。藉此確保車輛的美觀 外觀。 在以上的實施例中，組件彼此相連接的方式並無限制， 例如可以焊接、鉚接與栓接的方式。 如前所描述，在本發明中，一槽形板利用一作爲加強用 的加強組件而設置於開啓支架安裝部份，且該加強組件固 定至和開啓支架安裝部份分開的內部板，如此一來，從開 啓支架而來作用在槽形板的負荷可被允許從槽形板通過加 強組件而作用在內部板上。其結果爲，作用在內部板上的 負荷可被加強組件與內部板的一複雜結構所承受。 因此可簡單地確保槽形板的剛性，而不需增加槽形板與 加強組件的厚度，或將構造複雜化。因此車體重量減少的 同時，槽形板的開啓支架安裝部份的剛性增加。 於槽形板的後表面處所提供之加強組件，避免當尾門打 開時，可從外面看到加強組件。藉此確保車輛有美觀的外 觀。 【圖式簡單說明】 本發明的具體例將藉由舉例說明於下，並參照所附圖 式，其中； 12 312/發明說明書(補件)/92-04-92100791 圖1係包含本發明之一車輛後側的透視圖。 圖2係根據本發明之左開啓支架安裝構造的透視圖。 圖3係沿圖2中線段3-3所擷取的剖面圖。 圖4係沿圖2中線段4-4所擷取的剖面圖。 圖5 A、圖5B及5C爲一傳統車輛開啓支架安裝構造的示 意圖。 (元件符號說明） 10 車輛 11 車體 12 開口 11a 後車體表面 13 車頂架 14 尾門 15 後柱 16 車輛行李箱 20 外部板 21 第一凸緣 22 第二凸緣 30 內部板 31 第一凸緣 32 第二凸緣 33 後表面 40 槽形板 41 腹板 312/發明說明書(補件)/92-04-92100791 13 1222413 42 第一凸緣 43 第二凸緣 44 部份 45 後表面 50 加強組件 5 1 第一凸緣 52 第二凸緣 53 螺栓 54 螺帽 56 螺帽 60 開啓支架 61 第一端 62 第二端 63 安裝螺栓 100 車輛 101 後車體表面 102 尾門 103 開啓支架 103a 側端 104 後柱 105 開口 111 外部板 112 內部板 113 槽形板 312/發明說明書(補件)/92-04-921007911222413 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to an opening bracket mounting structure for a vehicle having a rear door at the rear of the vehicle body. [Prior Art] Figs. 5A, 5B and 5C are schematic diagrams of a conventional vehicle opening bracket installation structure. FIG. 5A is a perspective view of the rear part of a vehicle 100, showing a tailgate 102 is disposed on the body surface 101 behind the vehicle 100, and opening brackets 103 and 103 for maintaining the tailgate 102 in an opened state are installed on the vehicle On the rear pillars 104, 104 of the body rear. The tailgate 102 is a rear door for opening and closing the opening 105 of the rear body surface 101. FIG. 5B is a cross-sectional view taken along line B_B in FIG. 5A, showing a first installation embodiment of the side end 103a of the opening bracket 103. Each rear pillar 1 0 4 forms a closed cross section by connecting the outer panel 1 1 1 located on the side of the vehicle body, the inner panel n 2 facing the trunk of the vehicle, and the grooved plate i 3 on the rear side of the vehicle body. . In the first installation embodiment, a reinforcing component 1 1 4 is used at the rear surface of the flange 1 1 3a of the channel plate 1 1 3 having a channel-shaped cross section, and the side end 1 0 3 a of the bracket i 03 is opened. Mounted on the grooved plate 1 1 3 and the reinforcing component 1 1 4. The reinforcement assembly 1 1 4 is set for the following reasons. The load acts on the side end 103a of the opening bracket 103 in the axial direction (the direction indicated by the double arrow in the figure). The bending moment is caused at the flange 1 1 3 a of the grooved plate 1 1 3 which is in the shape of the channel. In order to maintain the rigidity of the flange 1 1 a to resist the bending moment, a reinforcing component 114 is applied to the portion 1 1 5 where the flange 113a of the opening bracket 103 is installed as a reinforcement. Apply the reinforcement assembly 丨 丨 4 to the section 6 of the 312 / Invention Manual (Supplements) / 92-04-92100791 1222413 Opening the bracket 1 0 3 This section 1 1 3 can be increased rigidity. Fig. 5C shows a second installation embodiment of the side end 10a of the opening bracket 103, which corresponds to the configuration in Fig. 5B. The structure of the rear pillar 104 is the same as those in FIG. 5B. In the second installation embodiment, the side end 103a of the opening bracket 103 is mounted on a bracket 116 having a considerable thickness, and the bracket 1 1 6 is fixed to the grooved plate 1 1 3 with bolts 1 1 7 Web 1 1 3b on the back surface. In the first embodiment shown in Fig. 5B, the bending moment occurs at the flange 1 1 3 a of the grooved plate 1 1 3 of the channel-shaped cross section. In order to maintain the bendable rigidity of the flange 1 1 3 a, a reinforcing component 1 1 4 is simply provided on the rear surface of the flange 1 1 3 a. Depending on the magnitude of the bending moment, the thickness of the grooved plate 1 1 3 and the reinforcing component 1 1 4 must be increased, but it will cause the weight of the vehicle body to increase. In the first embodiment shown in Fig. 5C, no bending moment occurs at the flange 1 1 3 a of the channel plate 1 1 3 of the channel-shaped cross section. However, when the tailgate 10 02 is opened, the bracket 1 1 6 can be seen from the outside, so there is still room for improvement in the appearance of the vehicle. [Summary of the Invention] The object of the present invention is to provide a method for increasing rigidity in a portion of a grooved plate provided with an opening bracket, and to provide a better appearance of a vehicle and reduce the weight of a vehicle body. According to the present invention, a vehicle opening bracket installation structure is provided, which includes: a rear pillar connected to an outer panel at a side of a vehicle body, an inner panel facing a trunk of the vehicle, and a grooved plate at a rear side of the vehicle body A closed section is formed; 312 / Invention Specification (Supplement) / 92-04-92100791 1222413 An opening bracket is installed on the grooved plate to keep the tail door in an open state; a reinforcing component is used to install the opening bracket A part of the grooved plate is at the rear surface and is also fixed to the inner plate. The part of the slot-shaped plate where the opening bracket is installed is combined with the reinforcing component for reinforcement, and the reinforcing component is also combined with the inner plate which is at a distance from the portion where the opening bracket is installed. The load on the grooved plate may be allowed to act on the inner plate from the grooved plate via the reinforcement assembly. As a result, the load acting on the grooved plate can be absorbed by the complicated structure of the reinforcing member and the inner plate. Therefore, the rigidity of the grooved plate can be simply ensured without increasing the thickness of the grooved plate and the reinforcing member or complicating its structure. As the weight of the vehicle body is reduced, the rigidity of the opening bracket portion of the grooved plate can be increased accordingly. Providing a reinforcing element at the rear surface of the slotted plate prevents the reinforcing element from being visible from the outside when the tailgate is opened. This ensures the aesthetic appearance of the vehicle. [Embodiment] Fig. 1 is a perspective view of a rear portion of a vehicle utilizing the present invention, showing that a tail door (rear door) 14 is provided at a surface 11a of a vehicle body after the vehicle 10. More specifically, the vehicle 10 is a rear hood-type vehicle or the like, which includes an opening 12 formed in the rear body surface 11a, and the tail door 14 is hinged (not shown) to swing upward and downward. It is installed on the roof frame 13 above the opening 12, so that the opening 12 can be opened and closed by the tail door 14 and the left and right opening brackets 60 and 60, which are used to keep the tail door 14 open. It is installed on the rear surface of the left and right rear pillars 15 and 15 of the rear part of the vehicle body 11. The opening brackets 60 and 60 are supporting pillars, and are coupled to the rear pillars 1 and 15 at the first end 61, 8 312 / Invention Specification (Supplement) / 92-04-92100791 1222413 6 at the first end, and at the second end Terminals 6 2 and 6 are coupled to tailgate 14. The mounting structure of the opening brackets 60 and 60 will now be described in detail below. Fig. 2 is a perspective view of a left-side opening bracket mounting structure according to the present invention, showing that the first end of the left-side opening bracket indicated by a dotted line is mounted on the upper portion of the left rear pillar 15; A reinforcement assembly 50 is provided inside the rear pillar 5. FIG. 3 is a cross-sectional view taken along the line 3-3 in FIG. 2, showing the rear pillar 5 connected to the outer panel 20 on the vehicle body side, the inner panel 30 facing the trunk 16 of the vehicle, and the rear side of the vehicle body. The trough-shaped plate 40 forms a closed-section body. The rear pillar 15 has a substantially triangular shape in a plan view, extends longitudinally and tapers forward. The outer plate 20, the inner plate 30, and the groove plate 40 are formed by bending a steel plate. The thickness of the inner plate 30 is thicker than that of the outer plate 20 and the grooved plate 40. The outer panel 20 has a substantially L-shaped cross-section body, which extends rearwardly from the first flange 21 at the front end to the second flange 22 from the rear end toward the trunk of the vehicle 22 ° The inner panel 30 has a substantially inverted L-shape The cross-section body extends backward from the first flange 31 at the front end and toward a lateral center of a curve to a second flange 32 extending rearward from the rear end. The position of the second flange 32 is closer to the lateral center than the second flange 22 of the outer plate 20. The grooved plate 40 has a groove-shaped cross-section body, which includes a web 41 and a first flange 42 and a second flange 43 located on the opposite side of the WEB1. The ends of the first and second flanges 4 2, 4 3 face rearward. The components 20, 30, and 40 are connected to the first flange 31 1 of the inner plate 30 by means of (1) / Invention Specification (Supplement) / 92-04-92100791 1222413 to the first flange 2 1 of the outer plate 20, (2) the first flange 42 connecting the grooved plate 40 to the second flange 22 of the outer plate 20 and (3) the second flange 32 connecting the inner plate 30 to the second flange 43 of the groove plate 40 The channel plate 40 combined with the rear pillar of the present invention is characterized in that the reinforcing component 50 is disposed on the rear surface 45 of a portion 44 of the opening bracket 60 (see FIG. 2) and the reinforcing component 50. It is also connected to the rear surface 33 inside the inner plate 30. More specifically, the reinforcing component 50 includes a first flange 51 and a second flange 52 by bending a steel plate into a substantially l-shaped body. The first flange 51 is mounted and connected to the rear surface 45 of the first flange 42 of the grooved plate 40, and the second flange 52 is mounted and connected to the inside of the inner plate 30 with a bolt 53.的 后 表面 3 3. The rear surface 3 3. Element symbol 5 4 represents a nut fixed to the rear surface of the second flange for receiving the bolt 5 3 screwed therein. As shown in FIG. 2, the upper and lower parts are fixed with bolts 53. The assembling process of the rear pillar 15 and the reinforcing component 50 is as follows. First, the first flange 5 of the reinforcing member 50 is mounted and coupled to the rear surface 45 of the first flange 42 of the channel plate 40. Next, 'the first flange 42 of the grooved plate 40 is connected to the second flange 22 of the outer plate 20. Then, the first flange 31 of the inner plate 30 is connected to the first flange 21 of the outer plate 20, and the second flange 43 of the groove plate 40 is connected to the second flange 32 of the inner plate 30. Finally, the inner plate 30 is fixed to the second flange 52 of the reinforcing member 50 with a bolt 53 and a nut 54. 10 312 / Invention Specification (Supplement) / 92-〇4_92! 〇〇791 1222413 This process helps to strengthen the assembly 50 in the rear column 15. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 2, showing that the first end 61 of the opening bracket 60 is installed at a joint portion between the grooved plate 40 and the reinforcing member 50. The first end 61 is integrally provided with a mounting bolt 63. More specifically, the nut 56 is fixed to the rear surface of the first flange 51 of the reinforcing member 50, and the mounting bolt 63 passes through the first flange 51 of the reinforcing member 50 and the grooved plate 40. The connecting portion between the first flanges 42 is fixed to the nut 56 and the mounting bolt 63. The first end 61 of the opening bracket 60 can be mounted to the mounting portion 44. Now, the function of the opening bracket mounting structure having the above structure will be described with reference to FIG. 4. The reinforcing component 50 is disposed on a portion 4 4 of the first flange 4 2 of the grooved plate 40 on which the opening bracket 60 is mounted. The reinforcing member 50 is also connected to the inner plate 30 in a manner to maintain a large thickness distance from the portion 44 to which the opening bracket 60 is installed. This mounting bolt 63 extends in a direction perpendicular to the extending direction of the opening bracket 60 (the direction perpendicular to the drawing). The opening bracket 60 swings up and down around a mounting bolt 63 fixed to the grooved plate 40. A load Π in the radial direction (the direction indicated by the double arrow in the figure) therefore acts on the first end 61 of the opening bracket 60. This load fl acts on the first flange 42 of the grooved plate 40 through the mounting bolt 63 and further acts on the inner plate 30 from the first flange 42 through the reinforcing member 50. The load Π acting on the grooved plate 40 can be borne by a complicated structure of the reinforcing assembly 50 and the inner plate 30. Therefore, the rigidity of the grooved plate 40 can be simply assured by 11 312 / Invention Specification (Supplement) / 92-04-92100791 1222413, without increasing the thickness of the grooved plate 40 and the reinforcing component 50 or constructing it. complication. Therefore, while the weight of the vehicle body is reduced, the rigidity of the portion 44 of the groove-shaped plate 40 to which the bracket 60 is connected is increased. In addition, since the reinforcing member 50 is provided at the rear surface 45 of the portion 44 on which the grooved plate 40 of the opening bracket 60 is installed, it is possible to prevent the reinforcing member from being seen from the outside when the tail gate 14 (see Fig. 1) is opened. This ensures the aesthetic appearance of the vehicle. In the above embodiments, the manners in which the components are connected to each other are not limited, for example, the manners of welding, riveting, and bolting can be used. As described above, in the present invention, a grooved plate is provided on the opening bracket mounting portion using a reinforcing component for reinforcement, and the reinforcing component is fixed to an inner plate separated from the opening bracket mounting portion. In the future, a load acting on the grooved plate from opening the bracket may be allowed to act on the inner plate from the grooved plate through the reinforcing member. As a result, the load acting on the inner plate can be borne by a complicated structure of the reinforcing member and the inner plate. Therefore, the rigidity of the grooved plate can be easily ensured without increasing the thickness of the grooved plate and the reinforcing member or complicating the structure. Therefore, while the weight of the vehicle body is reduced, the rigidity of the mounting portion of the opening bracket of the groove plate is increased. Reinforced components are provided on the rear surface of the slotted plate to prevent the reinforced components from being seen from the outside when the tailgate is opened. This ensures that the vehicle has an attractive appearance. [Brief description of the drawings] Specific examples of the present invention will be described below by way of example and refer to the attached drawings, in which: 12 312 / Invention Specification (Supplement) / 92-04-92100791 Figure 1 contains the present invention A perspective view of the rear side of a vehicle. Fig. 2 is a perspective view of a left opening bracket mounting structure according to the present invention. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a sectional view taken along line 4-4 in FIG. 2. 5A, 5B and 5C are schematic views of a conventional vehicle opening bracket mounting structure. (Description of component symbols) 10 Vehicle 11 Body 12 Opening 11a Rear body surface 13 Roof frame 14 Tail door 15 Rear pillar 16 Vehicle trunk 20 Outer plate 21 First flange 22 Second flange 30 Inner plate 31 First Flange 32 Second flange 33 Back surface 40 Grooved plate 41 Web 312 / Instruction manual (Supplement) / 92-04-92100791 13 1222413 42 First flange 43 Second flange 44 Portion 45 Rear surface 50 Reinforcing assembly 5 1 First flange 52 Second flange 53 Bolt 54 Nut 56 Nut 60 Opening bracket 61 First end 62 Second end 63 Mounting bolt 100 Vehicle 101 Rear body surface 102 Tail door 103 Opening bracket 103a side End 104 Rear pillar 105 Opening 111 Outer plate 112 Inner plate 113 Slotted plate 312 / Invention manual (Supplement) / 92-04-92100791