200827212 (1) 九、發明說明 【發明所屬之技術領域】 本發明是有關一種藉由設置在凹設於地面之修車坑內 的升降手段，讓車輛承受台的車輛保養用升降機。 【先前技術】 車輛保養用升降機，係藉由以油壓缸等之驅動裝置； 和藉由該驅動裝置朝上下方向伸縮動作的X連桿機構等所 形成的升降機構，讓車輛承受台升降動作，特別是爲了提 升作業性等，多半是採用將升降手段設置在凹設於地面的 修車坑內，於升降機下降時，讓車輛承受台閉塞修車坑的 開口面，而與地面形成平坦狀者。在此種車輛保養用升降 機中，本案申請人提供一種：由從使上端的蓋板執行升降 動作的下側升降機構；和設於該下側升降機構的蓋板上， 用來使設於上端之車載台升降的上側升降機構所形成升降 手段，當車輛承受台上升時，可藉由上側升降機構使蓋板 上升而閉塞修車坑之開口面的發明。如此一來’不僅是升 降機下降時，就連升降機上升時也修車坑不會露出。 〔專利文獻1〕日本特開第2005 _22804號公報 【發明內容】 〔發明欲解決的課題〕 但在專利文獻1之升降機中，由於在蓋板的上面，連 結有··形成上側升降機構之x連桿等的軸固定端和滑動端 200827212 (2) ，即使蓋板閉塞修車坑開口面，仍有χ連桿的軸固定端和 滑動端、軌道等的下端部分突出於蓋板上，且有妨礙作業 之虞。特別是左右設有一對車輛承受台，各車輛承受台分 別以X連桿而支承的型式，由成本面來看，有時由於無法 以油壓機構使兩個X連桿同步，而企圖利用同步軸連結兩 個兩個X連桿的軸固定端來形成同步，但在此形態下，由 於同步軸亦會露出於蓋板，因此會進一步減低利用蓋板之 閉塞修車坑的效果。 於是，本發明目的在於提供一種：升降機上升時更有 效的進行修車坑的閉塞，而能達到進一步提升作業性的車 輛保養用升降機。 〔用以解決課題的手段〕 爲了達成上述目的，申請專利範圍第1項所記載的發 明，其特徵爲：在升降台設置：外形大致與修車坑開口面 一致，且覆蓋除了上側升降機構的動作部分以外的升降台 之上面的覆蓋部，並在升降手段的上升動作之際，藉由覆 蓋部來閉塞修車坑開口面。 申請專利範圍第2項所記載的發明，除了申請專利範 圍第1項的目的外，採用藉由驅動裝置朝上下執行伸縮動 作而使車輛承受台升降的連桿機構作爲上側升降機構，並 將支承於升降台之連桿機構的下端，在車輛承受台之上限 位置，彎折形成大致爲垂直方向的〈字狀。 200827212 (3) 〔發明效果〕 若根據申請專利範圍第1項記載的發明，藉由覆蓋部 不讓上側升降機構的下端部分露出來。因而，即使在車輛 承受台的上限位置，修車坑的開口面也能形成最大限度的 平面，幾乎不妨礙作業者，而達到作業性的提升。 若根據申請專利範圍第2項記載的發明，除了申請專 利範圍第1項的效果，設於覆蓋部的縫隙也以最小面積形 成，可減低工具等掉落到修車坑內之疑虞。又，在折疊上 側升降機構之際，亦未與覆蓋部產生干涉。 【實施方式】 〔用以實施發明的最佳形態〕 以下，根據圖面來說明本發明之實施形態。 第1、2圖分別爲表示本發明之車輛保養用升降機之 一例的說明圖，第1圖爲表示車輛承受台的上限位置，第 2圖爲表示下限位置。車輛保養用升降機1具備由：在凹 設於地面F的修車坑3 0內，使設於上端的升降台3升降 動作的下側升降機構4 ;和設於該下升機構4的升降台3 上，使設於上端的車輛承受台5升降的上側升降機構6所 形成的上下二段升降手段2。該升降手段2是在修車坑的 左右（第1圖的右側爲修車坑3 0的前方，而垂直於圖面 的方向爲修車坑3 0的左右方向）配設一對。修車坑3 0係 如第3圖所示，左右的升降手段2是形成平面凹字狀，而 該平面凹字狀具有：各自配設的一對平面矩形狀的收容部 (4) (4)200827212 3 1、3 1 :和連通該收容部3 1、3 1的連通部3 2，且連通部 3 2在常態下，藉由蓋體3 3而閉塞。 再者，分別於第1、2圖中，（A )爲表示其中一側之 升降手段2的側面，（B )爲表示縱剖面，由於左右的構 造相同，以下僅針對其中一側的升降手段2做說明。 首先，在下側升降機構4上下一對的小連桿9是前後 各一對地設置4處，該小連桿9是在被固定在修車坑30 之收容部31之底面的基台7之上方，藉由左右一對X連 桿8、8，垂直的支承升降台3的升降移動，且在X連桿8 的前後，將其端部彼此以屈曲軸1 0所軸固定。各小連桿9 ，係左右彼此以屈曲軸1 〇連結，並且前後彼此也藉由連 桿1 1連結。又，前方小連桿9、9的下側之間，係藉由同 步桿1 2連結，且在設於該同步桿1 2之中間部位的連結片 13之前端與左右架設在X連桿8之下方的基台7的桿14 之間，架設有作爲驅動裝置的油壓缸1 5，可使下側升降機 構4朝上下方向伸縮動作。 其次，上側升降機構6也如第3圖所示，作爲連桿機 構的左右一對X連桿1 6、1 7連結成上下兩段，且可藉由 被架設在上下之X連桿1 6、1 7間作爲驅動裝置之油壓缸 1 8，而朝上下方向伸縮動作，在上側的X連桿1 6之上端 設有車輛承受台5。 又，在下側的X連桿1 7之下端係由：軸固定成可朝 升降台3之上面旋轉的軸固定端1 9、和可滑動地被保持在 設於升降台3之上面的左右一對軌道2 1內的滑動端20所 200827212 (5) 形成，軸固定端19及滑動端20，係在第1圖及第3圖所 示的車輛承受台5的上限位置，彎折成略垂直方向的〈字 狀。22係爲連結軸固定端1 9彼此的同步軸。 進而，在升降台3係設有：具有可閉塞收容部3 1之 開口的外形，且用來覆蓋軌道21和同步軸22的覆蓋部23 。在該覆蓋部23形成有縫隙24、24，該縫隙24、24可供 軸固定端19及滑動端20所貫穿，且具有容許可隨著X連 桿1 7之伸縮動作而供軸固定端1 9旋轉以及滑動端20滑 動的長度。 在如上所構成的車輛保養用升降機1中，油圧缸1 5、 1 8是分別藉由圖未表示的油壓電路所驅動控制而進行升降 動作。亦即，油壓缸1 5、1 8同時進行收縮動作的話，如 第2圖所示，下側升降機構4及上側升降機構6雖會同時 折疊，但在此，覆蓋部2 3是設定成：從地面F僅下降「 經折疊之上側升降機構6」之厚度部份的量，因此在該下 限位置，車輛承受台5的上面會與地面F —致。此時上側 升降機構6，由於X連桿1 7的軸固定端1 9及滑動端2 0 被彎折成〈字狀，因此X連桿7在覆蓋部23的上方被折 疊，並不會與覆蓋部23產生干涉。 而且，讓油壓缸1 5、1 8從下限位置開始進行伸長動 作（該伸長動作的時間點’可以兩個油壓缸同時進行，也 可以任一方先進行）的話，在下側升降機構4，油壓缸1 5 是透過連結片1 3讓前方的小連桿9立起，且透過連桿i i 使後方的小連桿9及X連桿8連動而立起，而如第1圖及 -8- 200827212 (6) 第3圖所示，讓升降台3垂直的朝上限位置上升。另外， 在上側升降機構6，油壓缸1 8會讓上下的X連桿1 6、1 7 伸長’而使得車輛承受台5朝上限位置上升。 在該上限位置’下側升降機構4的升降台3係設定成 :覆蓋部2 3的上面與地面F 一致。因而，收容部3 1的開 口面會藉由覆蓋部23略完全的被閉塞，位在覆蓋部23之 下方的X連桿1 7的軸固定端丨9和滑動端2〇、軌道21和 同步軸22就不會露出來。 像這樣，若根據上述形態的車輛保養用升降機丨，在 下側升降機構4的升降台3設置覆蓋部2 3，該覆蓋部2 3 的外形略與收容部3 1的開口面一致，且覆蓋除了軸固定 端1 9及滑動端20的動作部分以外升降台3的上面，並在 升降手段2之上升動作之際，藉由覆蓋部23來閉塞收容 部3 1之開口面的方式，使上側升降機構6的X連桿1 7之 軸固定端19和滑動端20、同步軸22等的下端部分，不會 露出於覆蓋部2 3的上方。因而，即使在車輛承受台5的 上限位置，收容部3 1的開口面爲也可形成最大限度的平 面，幾乎不妨礙作業者，而達到作業性的提升。 特別是，採用藉由油壓缸1 8朝上下執行伸縮動作而 令車輛承受台5執行升降的X連桿1 6，1 7來作爲上側升 降機構6，並使支承升降台3之X連桿17的下端，在車 輛承受台5的上限位置，彎折成略呈垂直方向的〈字狀， 故設於覆蓋部23的縫隙24也以最小面積形成，可減低工 具等掉落到修車坑3 0內之疑慮。又，折疊上側升降機構6 -9- (7) (7)200827212 之際，也不會與覆蓋部23發生干涉。 再者，上側升降機構和下側升降機構並不限於上述形 態’例如上側升降機構係可採用只有一段的X連桿和λ ( lambda)連桿，或者下側升降機構也可採用X連桿等，能 有適當的選擇。又，驅動裝置也不限於油壓缸，也能採用 氣壓缸和馬達等之其他的致動器。 一方面，在上述形態中，雖在覆蓋部設置可供軸固定 端和滑動端貫穿的縫隙，但也可由覆蓋部之端緣所形成的 切口來取代，亦可在這些的縫隙和切口內安裝··形成有可 供軸固定端和滑動端貫穿之縫隙的橡膠板，或者例如安裝 連結在滑動端，且配合其滑動而開閉的扣件，而進一步達 到開口面積的縮小化。 【圖式簡單說明】 第1圖爲車輛承受台處於上限位置的車輛保養用升降 機的說明圖，其中（A )爲表示側面、（B )爲表示縱剖面 〇 第2圖爲車輛承受台處於下限位置的車輛保養用升降 機的說明圖，其中（A )爲表示側面、（B )爲表示縱剖面 〇 第3圖爲車輛承受台處於上限位置的車輛保養用升降 機的立體圖。 【主要元件符號說明】 -10- 200827212 (8) 1 :車輛保養用升降機 2 :升降手段 3 :升降台 4 :下側升降機構 5 :車輛承受台 • 6 :上側升降機構 7 :基台 8、1 6、1 7 : X 連桿 9 :小連桿 1 5、1 8 :油壓缸 1 9 :軸固定端 20 :滑動端 22 :同步軸 23 :覆蓋部 24 :縫隙 3 0 :修車坑 3 1 :收容部 -11 -。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 [Prior Art] The vehicle maintenance elevator is a lifting mechanism formed by a driving device such as a hydraulic cylinder or an X-link mechanism that is extended and contracted in the vertical direction by the driving device, so that the vehicle can be lifted and lowered. In particular, in order to improve workability, most of the lifts are placed in a repairing pit that is recessed on the ground. When the lift is lowered, the vehicle is placed on the open surface of the repairing pit, and the ground is flat. By. In such a vehicle maintenance elevator, the applicant of the present invention provides a lower lift mechanism that performs a lifting operation from a cover plate at an upper end, and a cover plate provided on the lower lift mechanism for being provided at the upper end. The lifting means formed by the upper lifting mechanism of the lifting and lowering of the vehicle platform can raise the cover by the upper lifting mechanism and close the opening surface of the repairing pit when the vehicle receiving platform rises. As a result, not only when the lift descends, but also when the lift rises, the repair pit will not be exposed. [Problem to be Solved by the Invention] However, in the elevator of Patent Document 1, since the upper surface of the cover plate is connected, the upper lifting mechanism is formed. The shaft fixing end and the sliding end 200827212 (2) of the connecting rod, etc., even if the cover plate closes the opening surface of the repairing pit, the lower end portion of the shaft fixing end and the sliding end of the connecting rod, the rail, and the like protrudes from the cover plate, and There are obstacles to work. In particular, a pair of vehicle support platforms are provided on the left and right sides, and each vehicle support frame is supported by an X-link, respectively. From the perspective of the cost, sometimes the two X-links cannot be synchronized by the hydraulic mechanism, and an attempt is made to utilize synchronization. The shaft connects the two fixed ends of the two X-links to form a synchronization, but in this form, since the synchronous shaft is also exposed to the cover plate, the effect of occluding the repair pit by the cover is further reduced. Accordingly, it is an object of the present invention to provide a vehicle maintenance elevator which can more effectively perform the occlusion of the repair pit when the elevator is raised, and which can further improve the workability. [Means for Solving the Problems] In order to achieve the above object, the invention according to the first aspect of the invention is characterized in that the invention is characterized in that the outer surface of the invention is provided such that the outer shape substantially coincides with the opening surface of the repairing pit and covers the upper lifting mechanism. The covering portion on the upper surface of the lifting platform other than the operating portion closes the opening surface of the repair pit by the covering portion when the lifting means is raised. In the invention described in the second aspect of the patent application, in addition to the object of the first aspect of the patent application, the link mechanism that elevates and contracts the vehicle to the upper and lower sides by the driving device is used as the upper lifting mechanism, and supports At the lower end of the link mechanism of the lifting platform, at the upper limit position of the vehicle receiving table, the bending is formed into a substantially vertical shape. [Embodiment of the Invention] According to the invention of the first aspect of the invention, the lower end portion of the upper elevating mechanism is not exposed by the covering portion. Therefore, even at the upper limit position of the vehicle receiving table, the opening surface of the repairing pit can form a maximum plane, which hardly hinders the operator and achieves workability. According to the invention described in the second paragraph of the patent application, in addition to the effect of the first application of the patent range, the gap provided in the covering portion is also formed with a minimum area, which can reduce the trouble that the tool or the like falls into the garage. Further, when the upper side lifting mechanism is folded, there is no interference with the covering portion. [Embodiment] [Best Mode for Carrying Out the Invention] Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 and Fig. 2 are explanatory views showing an example of the vehicle maintenance elevator according to the present invention. Fig. 1 is a view showing an upper limit position of the vehicle receiving table, and Fig. 2 is a view showing a lower limit position. The vehicle maintenance elevator 1 includes a lower lift mechanism 4 that moves the lift platform 3 provided at the upper end in the repair pit 30 recessed on the floor F, and a lift table provided in the lower lift mechanism 4. 3, the upper and lower two-stage lifting means 2 formed by the upper lifting mechanism 6 which is provided by the upper end of the vehicle receiving platform 5 ascending and descending. The lifting means 2 is disposed on the right and left sides of the garage (the right side of the first figure is the front of the garage 30, and the direction perpendicular to the plane is the left-right direction of the garage 30). As shown in Fig. 3, the left and right lifting means 2 are formed in a flat concave shape, and the flat concave shape has a pair of flat rectangular receiving portions (4) (4) 200827212 3 1, 3 1 : and the communication portion 3 2 that communicates with the accommodating portions 3 1 and 3 1 , and the communication portion 32 is normally closed by the lid 3 3 . Further, in the first and second figures, respectively, (A) is a side surface showing one of the lifting means 2, and (B) is a vertical section, and since the left and right structures are the same, the following is only one of the lifting means for one side. 2 to explain. First, a pair of small and small links 9 on the lower side of the lower elevating mechanism 4 are provided in a pair of front and rear pairs, and the small link 9 is a base 7 that is fixed to the bottom surface of the accommodating portion 31 of the repairing pit 30. Upper and lower, the left and right X-links 8, 8 vertically support the lifting and lowering movement of the lifting platform 3, and the ends of the X-links 8 are axially fixed to each other by the bending crankshaft 10 before and after the X-links 8. Each of the small links 9 is connected to the right and left sides by a crankshaft 1 ,, and is also coupled to each other by a link 11 . Further, between the lower sides of the front small connecting rods 9, 9 are connected by the synchronizing rod 12, and the front end and the left and right of the connecting piece 13 provided at the intermediate portion of the synchronizing rod 12 are mounted on the X-link 8 A hydraulic cylinder 15 as a driving device is placed between the rods 14 of the base 7 below, and the lower lifting mechanism 4 can be expanded and contracted in the vertical direction. Next, as shown in Fig. 3, the upper side elevating mechanism 6 is connected to the left and right X-links 16 and 17 as the link mechanism in the upper and lower stages, and can be mounted on the upper and lower X-links 16 17 hydraulic cylinders 18 as driving means are moved in the vertical direction, and the vehicle receiving base 5 is provided at the upper end of the upper X link 16. Further, the lower end of the lower X-link 1 7 is fixed by a shaft fixed to the upper end of the lift table 3, and slidably held on the upper and lower sides of the lift table 3. The sliding end 20 in the rail 2 1 is formed by 200827212 (5), and the shaft fixing end 19 and the sliding end 20 are bent at an upper limit position of the vehicle receiving table 5 shown in FIGS. 1 and 3, and are bent slightly vertical. The shape of the word. 22 is a synchronous shaft that connects the fixed ends of the shafts 19 to each other. Further, the elevating table 3 is provided with a cover portion 23 having an outer shape that can close the opening of the accommodating portion 31 and covering the rail 21 and the synchronizing shaft 22. The cover portion 23 is formed with slits 24, 24 through which the shaft fixing end 19 and the sliding end 20 are penetrated, and has a shaft fixing end 1 for permitting the expansion and contraction of the X link 17 9 rotation and the length of sliding of the sliding end 20. In the vehicle maintenance elevator 1 configured as described above, the oil cylinders 15 and 18 are driven and operated by a hydraulic circuit (not shown). In other words, when the hydraulic cylinders 15 and 18 simultaneously perform the contraction operation, as shown in Fig. 2, the lower lifting mechanism 4 and the upper lifting mechanism 6 are simultaneously folded, but the covering portion 23 is set to : The amount of the thickness portion of the "folded upper side lifting mechanism 6" is lowered from the floor F, and therefore, at the lower limit position, the upper surface of the vehicle receiving table 5 is coincident with the floor F. At this time, since the upper side lifting mechanism 6 is bent into a <-shape by the shaft fixing end 19 and the sliding end 20 of the X-link 17, the X-link 7 is folded over the covering portion 23, and does not The cover portion 23 generates interference. Further, when the hydraulic cylinders 15 and 18 are extended from the lower limit position (the time point of the elongation operation can be performed simultaneously with two hydraulic cylinders, or one of them can be performed first), the lower lifting mechanism 4 is disposed at the lower side. The hydraulic cylinder 15 extends the small connecting rod 9 in the front through the connecting piece 13 and moves the small connecting rod 9 and the X-link 8 in the rear through the connecting rod ii, as shown in Figs. 1 and -8. - 200827212 (6) As shown in Fig. 3, the lifting platform 3 is raised vertically toward the upper limit position. Further, in the upper elevating mechanism 6, the hydraulic cylinder 18 elongates the upper and lower X links 16 and 17 to cause the vehicle receiving table 5 to rise toward the upper limit position. At the upper limit position, the elevating table 3 of the lower elevating mechanism 4 is set such that the upper surface of the covering portion 2 3 coincides with the floor surface F. Therefore, the opening surface of the accommodating portion 31 is slightly closed by the covering portion 23, and the shaft fixed end 丨9 and the sliding end 2〇, the track 21, and the synchronization of the X link 17 located below the covering portion 23 are synchronized. The shaft 22 will not be exposed. As described above, according to the vehicle maintenance elevator 上述 of the above aspect, the cover portion 23 is provided on the elevating table 3 of the lower elevating mechanism 4, and the outer shape of the cover portion 23 is slightly aligned with the opening surface of the accommodating portion 31, and the cover is covered. The upper surface of the lifting platform 3 other than the operating portion of the shaft fixing end 19 and the sliding end 20, and when the lifting device 2 is raised, the opening portion of the accommodating portion 31 is closed by the covering portion 23, and the upper side is lifted and lowered. The lower end portions of the shaft fixing end 19, the sliding end 20, the synchronizing shaft 22, and the like of the X link 17 of the mechanism 6 are not exposed above the covering portion 23. Therefore, even at the upper limit position of the vehicle receiving base 5, the opening surface of the accommodating portion 31 can be formed to the maximum level, and the workability can be improved without obstructing the operator. In particular, the X-links 166, 1 7 that cause the vehicle receiving platform 5 to perform lifting and lowering by the hydraulic cylinder 18 are used as the upper lifting mechanism 6 and the X-links supporting the lifting platform 3 are used. At the lower end of the vehicle receiving platform 5, the upper end of the vehicle receiving table 5 is bent into a shape of a substantially vertical direction, so that the slit 24 provided in the covering portion 23 is also formed with a minimum area, which can reduce the dropping of tools and the like into the repair pit. Doubts within 30. Further, when the upper lifting mechanism 6 -9-(7) (7) 200827212 is folded, it does not interfere with the covering portion 23. Further, the upper lifting mechanism and the lower lifting mechanism are not limited to the above-described configuration. For example, the upper lifting mechanism may employ only one section of the X-link and the lambda link, or the lower lifting mechanism may adopt the X-link or the like. , can have the right choice. Further, the drive device is not limited to the hydraulic cylinder, and other actuators such as a pneumatic cylinder and a motor can be used. On the one hand, in the above aspect, although the cover portion is provided with a slit through which the shaft fixing end and the sliding end can pass, it may be replaced by a slit formed by the edge of the covering portion, and may be installed in the slit and the slit. - A rubber sheet having a slit through which the shaft fixing end and the sliding end are inserted is formed, or a fastener attached to the sliding end and slidably opened and closed, for example, to further reduce the opening area. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view of a vehicle maintenance elevator in which the vehicle receiving table is at the upper limit position, wherein (A) is a side view, (B) is a vertical section, and Fig. 2 is a lower end of the vehicle receiving table. An explanatory view of the vehicle maintenance elevator of the position, wherein (A) is a side view, (B) is a vertical section, and FIG. 3 is a perspective view of the vehicle maintenance elevator in which the vehicle receiving table is at an upper limit position. [Description of main components] -10- 200827212 (8) 1 : Lifts for vehicle maintenance 2 : Lifting means 3 : Lifting table 4 : Lower lifting mechanism 5 : Vehicle receiving table • 6 : Upper lifting mechanism 7 : Abutment 8 1 6、1 7 : X Link 9 : Small connecting rod 1 5, 1 8 : Hydraulic cylinder 1 9 : Shaft fixed end 20 : Sliding end 22 : Synchronous shaft 23 : Covering part 24 : Slit 3 0 : Car repair pit 3 1 : Containment Department-11 -