200530485 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種梯子，特別是指一種可適用各種 地形的可調支腳高度之梯。 5 【先前技術】 參圖1，以公告第256314號「可改變高度之梯子」新 型專利案為例，該梯子1主要具有一梯架11、四契合裝置 12及四活動桿13。該梯架11具有四支撐桿111，及數連結 該相鄰支撐桿111的踏板112。該等契合裝置12是分別設 10 置在該支撐桿111 一側。該等活動桿13是分別可滑動地裝 設在該支撐桿111内，且能與該契合裝置12卡合定位。藉 此，該梯架11可利用該活動桿13的伸縮長度，調整每一 支撐桿111的高度，使該梯子1能適用具有高度落差的地 形如樓梯。惟，上述元件雖然可以達到調整梯子1高度的 15 目的，卻於實際使用時仍存有以下缺失，而亟待解決： 該梯架11雖然可以利用該等活動桿13，針對具有高 度落差的地形調整高度，但是，該等活動桿13只能架置在 平整的支撐面上，如果該地形（如室外場合）具有凹凸不平 整的支撐面時，就會有不夠平穩甚或有傾落的危險，而在 20 使用安全性方面，仍然有可提昇的空間。 【發明内容】 因此，本發明之目的，即在提供一種能穩固地架置在 具有落差及凹凸不平的支撐面上的可調支腳高度之梯。 於是，本發明的可調支腳高度之梯包含：一梯架、一 200530485 調整組件及一定位組件。該梯架具有數沿線性方向延伸的 支撐桿，及多數沿線性方向平行排列且連結二相鄰支撐桿 的踏板。該調整組件具有數支腳，該等支腳是可移動地設 置在該梯架每一支撐桿一側，並具有可穿出該支撐桿的一 5 端部。該定位組件具有數可旋動地樞設在每一支腳一端部 且服貼於一支撐面的腳板，及數可分別固定該腳板的鎖固 件。 本發明的功效是能使適用地形更廣泛，且提昇使用安 全性。 10 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 參閱圖2、圖3，本發明「可調支腳高度之梯」的較 15 佳實施例包含：一梯架2、一調整組件3及一定位組件4 〇 該梯架2是概呈倒V型，並具有四沿線性方向延伸的 支撐桿21，及多數沿線性方向平行排列且連結二相鄰支撐 桿21的踏板22。 20 該調整組件3具有三沿線性方向排列且固定在每一支 撐桿21 —側的螺固件31，及數與該螺固件31螺合的支腳 32。該等支腳32分別具有可穿出該支撐桿21的一端部 32卜 該定位組件4具有數可旋動地樞設在每一支腳32端 200530485 部321且服貼於一支撐面的腳板41，及數可分別固定該腳 板41的鎖固件42。該鎖固件42具有貫穿該支腳32端部 321與該腳板41的一螺栓421，及一與該螺栓421螺合且 鎖固該腳板41的螺帽422。 5 藉此，該等支腳32可利用螺進或旋退的動作，沿線 性方向伸縮，使該梯架2的支撐桿21具有調整高度的功能 ，參圖4，而能架置在具有高度落差的地形（如樓梯）。或 如圖5所示，當支撐面不平整時，可鬆釋該定位組件4的 螺帽422，使該腳板41可自由旋動改變角度，而能服貼於 10 凹凸不平的地形，再鎖緊該螺帽422，使該腳板41固定， 就可以使該梯架2的支撐桿21穩固的支撐在凹凸不平的支 撐面上。 參圖6，本發明的調整組件3與定位組件4也可以設 置在一直型梯架5的其中一支撐桿51上，藉此，同樣可以 15 利用伸縮的支腳32及旋擺調整角度的腳板41，穩固地架 置在具有落差及凹凸不平的支撐面上。 據上所述可知，本發明之可調支腳高度之梯具有下列 優點及功效： 本發明可以藉由伸縮的支腳32及旋擺調整角度的腳 20 板41，穩固地架置在具有落差及凹凸不平的支撐面上，不 但適用地形更為廣泛，且能提昇使用時的穩固效果及安全 性，並符合使用效益。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 200530485 範圍及發明說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 200530485 【圖式簡單說明】 圖1是一立體圖，說明公告第256314號「可改變高 度之梯子」新型專利案； 圖2是一立體圖，說明本發明一可調支腳高度之梯的 5 較佳實施例； 圖3是一部份立體圖，說明該較佳實施例中一調整組 件與一定位組件； 圖4是一立體圖，說明該較佳實施例架置在一樓梯上 ， 10 圖5是一部份立體圖，說明該較佳實施例架置在凹凸 不平的地形上；及 圖6是一正視圖，說明該較佳實施例中一梯架的另一 種實施樣態。 15 9 200530485 【圖式之主要元件代表符號簡單說明】 2-- ……梯架 21… •…·-支撐桿 22 3……, ……踏板 3…，·…，· ……調整組件 31........ ……螺固件 32……” ……·支腳 321…… …·"端部 4"..............定位組件 41“…·…·…·腳板 42貞固4牛 421 ............螺栓 422 ............螺帽 5...........梯架 51..............支摟桿 10200530485 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a ladder, and in particular, to a ladder with adjustable foot height applicable to various terrains. 5 [Prior art] Referring to FIG. 1, take the new patent case No. 256314 “Ladder capable of changing height” as an example. The ladder 1 mainly includes a ladder frame 11, four fitting devices 12 and four movable rods 13. The ladder frame 11 has four support rods 111 and a plurality of pedals 112 connecting the adjacent support rods 111. The fitting devices 12 are respectively disposed on one side of the support rod 111. The movable rods 13 are respectively slidably installed in the support rod 111 and can be locked and positioned with the engaging device 12. Accordingly, the ladder frame 11 can use the telescopic length of the movable rod 13 to adjust the height of each support rod 111, so that the ladder 1 can be adapted to a shape with a height drop such as a staircase. However, although the above-mentioned components can achieve the purpose of adjusting the height of the ladder 1, it still has the following shortcomings in actual use, and needs to be resolved urgently: Although the ladder frame 11 can use the movable rods 13 to adjust the terrain with a height difference Height, however, these movable rods 13 can only be placed on a flat support surface. If the terrain (such as an outdoor occasion) has a bumpy support surface, there will be a risk of instability or even falling, and There is still room for improvement in terms of safety in use. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a ladder with adjustable foot height which can be stably mounted on a support surface having a drop and unevenness. Therefore, the ladder with adjustable foot height of the present invention includes: a ladder frame, a 200530485 adjusting component and a positioning component. The ladder frame has a plurality of support rods extending in a linear direction, and most of the pedals are arranged in parallel in the linear direction and connect two adjacent support rods. The adjusting assembly has a plurality of feet which are movably disposed on one side of each support rod of the ladder frame and have a 5 end portion which can pass out of the support rod. The positioning assembly has a plurality of leg plates rotatably pivotally disposed at one end of each leg and attached to a supporting surface, and a plurality of locking members capable of respectively fixing the leg plates. The effect of the present invention is to make the applicable terrain more extensive and to improve the safety of use. 10 [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Referring to FIG. 2 and FIG. 3, a better 15 embodiment of the “ladder with adjustable foot height” of the present invention includes: a ladder frame 2, an adjustment component 3, and a positioning component 4. The ladder frame 2 is generally inverted V And has four supporting rods 21 extending in a linear direction, and a plurality of pedals 22 arranged in parallel in the linear direction and connecting two adjacent supporting rods 21. 20 The adjusting assembly 3 has three screw members 31 arranged in a linear direction and fixed to one side of each support rod 21, and a plurality of legs 32 screwed with the screw members 31. The legs 32 each have an end portion 32 that can penetrate the support rod 21, and the positioning assembly 4 has a plurality of leg plates pivotally mounted at the end of each leg 32, 200530485, 321, and attached to a support surface. 41, and a plurality of locking members 42 respectively for fixing the leg plate 41. The locking member 42 has a bolt 421 penetrating the end portion 321 of the leg 32 and the leg plate 41, and a nut 422 screwed with the bolt 421 and locking the leg plate 41. 5 In this way, the legs 32 can be retracted and retracted in a linear direction by using a screw-in or swing-out action, so that the support rod 21 of the ladder frame 2 has the function of adjusting the height. See FIG. Terrain (such as stairs). Or as shown in FIG. 5, when the supporting surface is uneven, the nut 422 of the positioning assembly 4 can be released, so that the foot plate 41 can be freely rotated to change the angle, and can be adapted to 10 uneven terrain, and then locked. By tightening the nut 422 and fixing the leg plate 41, the support rod 21 of the ladder frame 2 can be stably supported on the uneven support surface. Referring to FIG. 6, the adjusting component 3 and the positioning component 4 of the present invention may also be disposed on one of the supporting rods 51 of the straight ladder frame 5, thereby, it is also possible to use 15 telescopic feet 32 and a leg plate for swing angle adjustment. 41. It is stably mounted on a support surface with a drop and unevenness. According to the above, the ladder with adjustable foot height of the present invention has the following advantages and effects: The present invention can be stably mounted on a stand with a drop by using telescopic feet 32 and swinging foot 20 plates 41 to adjust the angle. And uneven support surface, not only applicable to a wider range of terrain, but also can improve the stability and safety during use, and meet the use efficiency. However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made in accordance with the scope of the present application patent 200530485 and the content of the invention specification , All should still fall within the scope of the invention patent. 200530485 [Brief description of the drawings] Figure 1 is a perspective view illustrating the new patent case of the Announcement No. 256314 "Height-changable Ladder"; Figure 2 is a perspective view illustrating the 5 best of a ladder with adjustable foot height according to the present invention Embodiment; Figure 3 is a partial perspective view illustrating an adjustment component and a positioning component in the preferred embodiment; Figure 4 is a perspective view illustrating the preferred embodiment mounted on a staircase, 10 Figure 5 is a A partial perspective view illustrates that the preferred embodiment is mounted on uneven terrain; and FIG. 6 is a front view illustrating another embodiment of a ladder frame in the preferred embodiment. 15 9 200530485 [Simplified explanation of the main symbols of the drawings] 2-- …… Ladder frame 21… •… --Support rod 22 3 ……, …… Pedals 3…, ·…, · …… Adjustment unit 31. ............. Screws 32 …… ”…… · Feet 321 ……… " End 4 " .............. Positioning assembly 41" ... ······ Foot plate 42 Zhengu 4 Cattle 421 ............ Bolt 422 ............ Nut 5 ......... .. ladder frame 51 .............. support pole 10