M344073 八、新型說明： 【新型所屬之技術領域】 本新型是有關於-種升降桌，特別是指一種操作方便 且又無複雜連動機構的升降桌。 【先前技術】 早期桌子-般都是採固定高度設計，在使用上無法配 合使用者的高度做調整，使用上較不方便。因此遂有可供 升降調整的升降桌問世，例如我國公告帛124491〇號發明 專利案即揭示一種升降桌，參閱圖i所示，主要是在桌腳 11上設有-支撐架12,支擇架12上端樞設有二調整連桿 13’兩調整連桿13-端相對設有可㈣合的凸齒14，調整 連桿13另-端並與-固設於桌面15下方的固定桿i5i上 之支架16相連接，支架16内設有一支軸161，支軸i6i兩 端分別設有反向的外螺紋162,且支軸161兩端並螺設有一 調整座163,調整座163是藉由—樞軸164與調整連桿Η 相樞接。另外，支架16的側壁上設有滑槽165，供極轴 164穿伸，支架16的一端並設有—搖柄17與支軸i6i相連 接。 'f M-f I» ^ χ I ， yy X.( 帶動支架16内的支軸161旋轉’支軸161上相對設置的兩 調整座163可在螺紋帶動下向左或向右位移，進 調整連桿13相對靠合或張開，以制調整桌面高度之作用 雜，製造成 由於此種習知升降桌丨的連動機構相當複 M344073 又同，且搖柄π設於支架16 —端且凸出於桌面π —侧 二更會導致升降桌！該側無法靠牆，人員在升降桌丨旁邊 行走時，稍有不慎衣物便會被搖柄丨7勾到。 【新型内容】 因此，本新型之一目的，是在提供一種操作方便，且 =以控制桌板昇降的調整單元體積小，又無複雜連 的升降桌。 再 於是，本新型升降桌，包括有： 一桌板； 個八s丨腳本早^ ’連設於該桌板底面，該腳架單元具有兩 刀，位於該桌板底面近兩相對側邊處的立架，以及兩個 活動地分別伸置於各該立架中的活動架；及 一調整單元，包括有·· 兩呈中空狀之套筒，分別穿置於各該立架中； 兩螺接桿，分別螺設於各該套筒中； 兩基座’與各活動架相連接，各該基座具有多數個 朝向不同方位的通孔； 多數個斜齒輪，可分離地設於各該基座内，且位於 有同—基座内的該等斜齒輪並彼此相嘴接，各該斜齒輪具 通過各該通孔的凸㈣，各該凸軸部上並設有-二=狀且顯露於各㈣體外之接合槽，其中開口朝 列八^接合槽並顯露於該桌板頂表面，而各該螺接桿 、/、開σ朝下的各該接合槽相連接； 一搖柄’具有—形狀與各該接合槽相對應的軸接部 M344073 柄之轴接部可選擇地伸置於任—接合槽内，以 二斜齒輪能連動相嚙接的其他斜齒輪同時旋轉， 各桿相料該套詩縮位移，進而藉 :座，各该活動架帶動該桌板升降位移；及 連桿’該連桿的兩端分別與各該座體相對應的各 相連接’以使各該座體内的該等斜齒輪產生 同步連動關係。 較佳的是，每一办加目士 桿近兩端的底面處而用：接桿、兩個分別設於該底 机於…， 接觸地面之腳座，以及兩間隔立 呈開放狀，而每一活動架則具有_中：二頂知 頂架體底面且向下延伸之立其 … ^ ° 又於该 ^ S π.# . g，各垓立管為t空管體且底 知呈開放狀，各該立管並能用以伸人於各支揮桿内。 另外，兩活動架的頂架體於相對應的位置處各設有一 可供δ亥連桿的兩端分別伸置的定位孔。 ’每一套筒内壁面形成有陰螺紋，頂端並呈 而母一螺接桿外周緣面形成有可與各該套筒内的 陰螺紋配合嚙接的陽螺紋。藉此當該搖柄之軸接部帶動一 斜齒輪連動相响接的其他斜齒輪旋轉時可同步連動在螺 接桿與套筒之間的陰螺紋與陽 _歸。 使螺接才干可相對套筒 =卜，該連桿外周緣面形狀與各該接合槽的形狀相對 應2母-螺接桿頂端設有—能用以與一斜齒輪的接合槽 ㈣接的軸接部’且該軸接部的形狀也與所述接合槽的形 M344073 狀相對應。 每-基座具有一本體，及多數個蓋板，該本體具有多 數：側壁，及一由該等側壁界定而成之容置空間各該通 孔是分別設於各該側壁上，各該蓋板是可分離地鎖設於各 «亥側壁上，且各該蓋板上並設有—穿孔，各該穿孔並可供 各該斜齒輪的凸軸部通過。M344073 VIII. New description: [New technical field] The new type is related to a kind of lifting table, especially a lifting table with convenient operation and no complicated linkage mechanism. [Prior Art] Early tables were generally designed with a fixed height, which could not be adjusted with the height of the user in use, and it was inconvenient to use. Therefore, there is a lifting table that can be adjusted for lifting and lowering. For example, the invention patent case of the Chinese Announcement No. 124491 揭示 reveals a lifting table. Referring to Figure i, the supporting frame 12 is mainly provided on the table leg 11 The upper end of the frame 12 is pivotally provided with two adjusting links 13'. The two adjusting links 13-ends are oppositely provided with the four-piece protruding teeth 14, and the other ends of the connecting rods 13 are adjusted and fixed to the fixing rod i5i below the table top 15. The upper bracket 16 is connected, and a shaft 161 is disposed in the bracket 16. The two ends of the support shaft i6i are respectively provided with a reverse external thread 162, and an adjusting seat 163 is screwed on both ends of the support shaft 161, and the adjusting seat 163 is borrowed. The pivot 164 is pivotally connected to the adjustment link Η. In addition, the side wall of the bracket 16 is provided with a sliding slot 165 for the pole shaft 164 to extend. One end of the bracket 16 is provided with a rocker 17 connected to the pivot shaft i6i. 'f Mf I» ^ χ I , yy X. (Rotating the support shaft 161 in the bracket 16) The two adjustment seats 163 on the support shaft 161 can be displaced to the left or right by the thread, and the adjustment link is inserted. 13 is relatively close or open, in order to adjust the height of the table top, and the manufacturing mechanism is such that the linkage mechanism of the lifting table is quite the same as M344073, and the handle π is disposed at the end of the bracket 16 and protrudes The desktop π - side two will lead to the lifting table! The side can not be against the wall, when the person walks beside the lifting table, a little careless clothes will be hooked by the handle 丨7. [New content] Therefore, the new type One purpose is to provide a lifting table which is easy to operate and which has a small adjustment unit for controlling the lifting and lowering of the table, and has no complicated connection. Further, the new lifting table includes: a table; The script is connected to the bottom surface of the table, the stand unit has two knives, a vertical frame located at two opposite sides of the bottom surface of the table, and two movable places respectively extending into the respective stands. a movable frame; and an adjustment unit, including two a sleeve is respectively disposed in each of the vertical frames; two screwing rods are respectively screwed in the sleeves; the two bases are connected with the movable frames, and each of the bases has a plurality of different orientations a plurality of helical gears are detachably disposed in each of the bases, and are located at the same helical gears in the same base and are connected to each other, and the helical gears are convex through the through holes. (4) each of the protruding shaft portions is provided with a -two= shape and is exposed in the outer joint groove of each (4), wherein the opening faces the column and is exposed on the top surface of the table, and each of the screw rods, Each of the engaging grooves facing σ downward is connected; a crank shank having a shape corresponding to each of the engaging grooves M344073, and a shaft connecting portion of the shank selectively extending into the engaging groove The two helical gears can simultaneously rotate the other helical gears that are engaged with each other, and each of the rods feeds the set of poems and displacements, and then by the seat, each movable frame drives the table to move up and down; and the connecting rod 'the two of the connecting rods The ends are respectively connected to the respective phases of the respective seats to synchronize the helical gears in each of the seats Preferably, each of the upper ends of the gauze rods is used at the bottom of the two ends: a post, two respectively placed on the bottom of the base, a foot that contacts the ground, and two spaced apart open And each movable frame has _zhong: the top surface of the top frame body and extends downwards... ^ ° and in the ^ S π.# . g, each of the riser pipes is a t-pipe body and bottom Knowing that the riser is open, each of the risers can be used to extend into each of the swings. In addition, the top frame bodies of the two movable frames are respectively provided at the corresponding positions for respectively. Positioning holes for the extension. 'The inner wall surface of each sleeve is formed with a female thread, and the top end is formed. The outer peripheral surface of the mother-screw rod is formed with a male thread which can be engaged with the female thread in each sleeve. When the shaft joint of the crank handles the rotation of the other helical gears of the helical gear linkage phase, the female thread and the male thread between the screw rod and the sleeve can be synchronously linked. The screw can be connected to the sleeve, and the outer peripheral surface of the connecting rod has a shape corresponding to the shape of each of the engaging grooves. The female-screw rod is provided at the top end of the connecting rod to be engaged with the engaging groove (four) of the helical gear. The shaft portion 'and the shape of the shaft portion also corresponds to the shape of the engagement groove M344073. Each of the bases has a body and a plurality of cover plates. The body has a plurality of: sidewalls, and a receiving space defined by the sidewalls. The through holes are respectively disposed on the sidewalls, and the covers are respectively disposed on the sidewalls. The plate is detachably locked to each of the side walls, and each of the cover plates is provided with a perforation, and the perforations are provided for the convex shaft portions of the helical gears to pass through.
本新型之升降桌，還包括以多數個扣置於各該凸轴部 上以使各該斜齒輪固定於各該蓋板上的〇型扣片。 進一步來說，桌板還具有一貫穿頂面與底面的貫孔， 且使設於-基座内的斜齒輪開口朝上的接合槽盥 通’另外’該貫孔並可供該搖柄的軸接部通過以與相對岸 的接合槽接合。 " 本新型所能達成的功效在於操作方便，且用以# 板昇降的調整單元體積小，又無複雜連動機構。工〃 【實施方式】 、有關本新型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 楚的呈現。 Θ 爹閱圖^3,是本新型升降桌3的—較佳實施例，包 括有-桌板4、-連設於桌板4底面的腳架單元5，以及一 。周正早7G 6°桌板4上設有_貫穿其頂面與底面的貫孔4K 如圖8所示）。其中腳架單元5具有兩用以立置於地面上的 立架51，以及兩活動架52，每—立架具有-底桿5U、 兩個分別設於底桿511 $兩端的底面處而用以接觸地面之 M344073 腳座512，以及兩間隔立設於底桿511上之支撐桿513，各 支撐桿513均為中空管體，頂端呈開放狀。而每一活動架 52則具有一頂架體521，及兩凸設於頂架體521底面且向 下延伸之立管522,各立管522亦為中空管體，底端呈開放 狀，兩活動架52之頂架體521於相對應的位置處各設有一 定位孔523。另外，各立管522並能用以伸入於各支撐桿 513 内。The lifting table of the present invention further includes a cymbal type buckle piece which is placed on each of the protruding shaft portions by a plurality of buckles to fix the respective helical gears to the respective cover plates. Further, the table board further has a through hole penetrating through the top surface and the bottom surface, and the spacing groove of the helical gear opening disposed in the base is opened to pass the 'other' through the through hole and is available for the handle The shaft joint is engaged by the engagement groove with the opposite bank. " The effect achieved by the novel is that it is easy to operate, and the adjustment unit for the #board lifting is small in size and has no complicated linkage mechanism. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Figure 3 is a preferred embodiment of the new lift table 3, including a table top 4, a stand unit 5 attached to the underside of the table 4, and a stand. Zhou Zhengzao 7G 6° table 4 is provided with a through hole 4K penetrating the top and bottom surfaces thereof as shown in Fig. 8). The tripod unit 5 has two vertical frames 51 for standing on the ground, and two movable frames 52. Each of the vertical frames has a bottom bar 5U and two bottom surfaces respectively disposed at the two ends of the bottom bar 511 The support rod 513 is a hollow tube body, and the top end is open, with a M344073 foot 512 contacting the ground and two support rods 513 standing on the bottom rod 511. Each movable frame 52 has a top frame body 521 and two risers 522 protruding from the bottom surface of the top frame body 521 and extending downward. Each riser tube 522 is also a hollow tube body, and the bottom end is open. The top frame body 521 of the two movable frames 52 is respectively provided with a positioning hole 523 at corresponding positions. In addition, each riser 522 can be used to extend into each of the support rods 513.
參閱圖3、4,調整單元6包括有兩個呈中空狀之套筒 61、兩螺接桿62、兩基座63、多數個斜齒輪64、一連桿 65’以及一搖柄67。每一套筒61内壁面形成有陰螺紋6二 ，頂端並呈開放狀。而每一螺接桿62外周緣面形成有可與 套筒61内的陰螺紋611配合嚙接之陽螺紋621，螺接桿62 頂端並設有一能用以與一斜齒輪64相連接之軸接部622。 另外，基座63具有一本體631，本體631具有多數個側壁 632，及一由該等側壁632界定而成之容置空間633，各側 壁632上均開設有一通孔634,使得該等通孔634能朝向不 同方位（如上、下、左、右、前、後等），基座63還具有多 數個鎖設於各侧壁632上用以封閉各通孔634之蓋板635、 636，各該蓋板635、636上設有一穿孔637、638。至於各 斜齒輪64則具有一齒部641，及一能通過相對應的通孔 634與穿孔637(638)的凸轴部642,凸軸部642 一端並朝内 凹陷形成有—接合槽643 ’接合槽643呈多角形狀。而螺接 桿62之軸接部622、連桿65之形狀均與接合槽643的形狀 相對應。 M344073 參閱圖4、5、8，在組合時，各斜齒輪64是利用其凸 軸部642貫穿各基座63上的通孔634與各蓋板635、636 上的穿孔637、638，並藉一 C型扣片66扣置於凸軸部642 上，即可使該等斜齒輪64組合定位在各蓋板635、63β上 ，斜齒輪64之齒部641並經由通孔634伸置於容置空間 633中。再將已結合有斜齒輪64之蓋板635、6祁鎖設於基 座63之側壁632上，完成斜齒輪64與基座63之組合作業 ，此時各斜齒輪64之接合槽以3並顯露於蓋座635、636 外表面。要特別說明的是，在本實施例中的基座63並非各 側土 632上都必須安裝斜齒輪64，而是可供人員依所需決 定斜齒輪64的設置方位及個數。 接著可將螺接桿62頂端之軸接部622與開口朝下之接 合槽643相連接，使得與螺接桿62相連接之該斜齒輪64 旋轉時，能同時連動螺接桿62旋轉，在螺接桿⑽與套筒 61之間的陰螺紋611與陽螺紋621帶動下，螺接桿62將可 相對套筒61伸縮位移。至此即完成套筒61、兩螺接桿μ 、兩基座63、多數個斜齒輪64，及連桿吒之組裴。 如圖2、3、8所示’再將套筒61部份置人_支撐桿 川中，並利用螺絲予以鎖固定位，同時將活動_ Μ之立 管522套置於套筒61外，且立管奶並進一步伸置於支撐 桿513 _，此時位於螺接桿62頂端之基座6 = 架52之頂架體521中，基座 、活動 3上開口朝上之斜齒輪64的 接a槽643並顯露於頂架冑521外（如圖6所示） 桌板4安裝於頂架體521上後，基座63上開口朝上:斜齒貝 10 M344073 輪64的接合槽643恰與桌板4之貫孔41相通（參閱㈣。 另外如圖7所示，兩基座63上開口朝左（圖示方向）之斜齒 輪64的接合槽643並對準活動架52之頂架體521 位孔523。 參閱圖7，連桿65是設置於聊架單元5的兩活動竿μ 間’亦即將連桿65的兩端分別通過兩活動架52之頂竿體 上的定位孔523,進而與相對應之斜齒輪64的接合槽丑 643相連接’藉此可使位於連桿65兩側的該等斜齒輪以產 生連動關係。另外，如圖8所示，搖柄67則是具有—形狀 與各接合槽643相對應的軸接部gw。 參閱圖8、9,本新型升降桌3當要進行高度調整時， 只，將搖柄67之軸接部671插入桌板4之貫孔Μ中，進 ;開口朝上之斜齒輪64的接合槽⑽中，旋轉摇柄 64 rL可藉由搖柄67之軸接部671連動相連接的該斜齒輪 r鐘疋，進而連動與該斜齒輪64相捕的其他斜齒輪64 二’同步連動各螺接桿62相對各套筒61伸縮位移，同 二 =65之傳遞所產生之同步連動效果，使得桌板4 62的伸縮帶動下進行升、降位移。又當桌板* Π高度時’使用者更可將搖柄67取離，如此不會影 貝、活動，及桌面的可供使用區域。 整桌=上4:士本新型升降桌2藉由上述構造設計，在調 a守’只要使用上只要旋轉搖柄67即可輕易地 Γ声睹板4昇降’操作上相當方便，且當桌板4已達適當 摇柄67還可取離，所以不會影響人員的活動，及 11 M344073 桌面的可i、使用區域’另外，用以控制桌板4昇降的調整 單元6體積小，又無複雜連動機構，因而還能降低製造成 本0 淮乂上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及新型說明内容所作之簡單的等效變化與修飾皆仍 屬本新型專利涵蓋之範圍内。 [圖式簡單說明】 圖1是我國公告第1244910號發明專利案之升降桌示 意圖； 圖2疋本新型升降桌一較佳實施例的側視示意圖； 圖3是該較佳實施例的局部分解示意圖，在本圖中將 桌板省略未晝； ' 圖4是該較佳實施例的調整單元局部分解示意圖； 圖5疋该較佳實施例的一立體圖，顯示螺接桿頂端之 軸接部是對準開口朝下之接合槽； 圖6是該較佳實施例的俯視示意圖，在本圖中將桌板 省略未畫； 圖7是該較佳實施例的前視示意圖； =8疋該較佳實施例的局部剖面放大圖，顯示搖柄之 軸接W疋插入桌板之貫孔中，並與開口朝上之斜齒輪的接 合槽相連接； 圖9是該較佳實施例的另一側視示意圖，顯示桌板已 上昇的態樣。 12 M344073 【主要元件符號說明】 3升降桌 5腳架單元 41貫孔 52活動架 62螺接桿 6 4斜齒輪 67搖柄 511底桿 513支撐桿 522立管 611陰螺紋 622軸接部 632側壁 634通孔 637、638 穿孔 642凸軸部 671軸接部 4桌板 6調整單元 51立架 61套筒 63基座 65連桿 512腳座 521頂架體 523定位孔 621陽螺紋 631本體 633容置空間 635、636 蓋板 641齒部 643接合槽 13Referring to Figures 3 and 4, the adjustment unit 6 includes two sleeves 61 which are hollow, two screw levers 62, two bases 63, a plurality of helical gears 64, a link 65' and a rocker 67. A female thread 6 is formed on the inner wall surface of each sleeve 61, and the top end is open. The outer peripheral surface of each of the screw rods 62 is formed with a male thread 621 engageable with the female thread 611 in the sleeve 61. The top end of the screw rod 62 is provided with an axis for connecting with a helical gear 64. The connecting portion 622. In addition, the base 63 has a body 631. The body 631 has a plurality of side walls 632, and a receiving space 633 defined by the side walls 632. Each of the side walls 632 defines a through hole 634. The 634 can be oriented in different orientations (upper, lower, left, right, front, rear, etc.), and the base 63 further has a plurality of cover plates 635, 636 respectively locked on the side walls 632 for closing the through holes 634. The cover plates 635, 636 are provided with a through hole 637, 638. Each of the helical gears 64 has a tooth portion 641, and a convex shaft portion 642 that can pass through the corresponding through hole 634 and the through hole 637 (638). One end of the convex shaft portion 642 is recessed inwardly to form an engaging groove 643'. The engaging groove 643 has a polygonal shape. The shape of the abutment portion 622 and the link 65 of the screw lever 62 correspond to the shape of the engagement groove 643. M344073 Referring to Figures 4, 5, and 8, in combination, each of the helical gears 64 has a through-hole 634 extending through each of the bases 63 with its male shaft portion 642 and perforations 637, 638 on the respective cover plates 635, 636, and A C-shaped clasp 66 is fastened to the convex shaft portion 642, so that the helical gear 64 is combined and positioned on each of the cover plates 635, 63β, and the tooth portion 641 of the helical gear 64 is extended through the through hole 634. Placed in space 633. The cover plates 635 and 6 结合 which have been combined with the helical gear 64 are locked on the side wall 632 of the base 63 to complete the combination of the helical gear 64 and the base 63. At this time, the engaging grooves of the helical gears 64 are 3 Appeared on the outer surfaces of the covers 635, 636. It is to be noted that the base 63 in the present embodiment does not have to be mounted with the helical gear 64 on each of the lateral soils 632, but allows the person to determine the orientation and number of the helical gears 64 as needed. Then, the shaft connecting portion 622 of the top end of the screwing rod 62 can be connected with the opening groove 643 with the opening downward, so that when the helical gear 64 connected to the screwing rod 62 rotates, the screwing rod 62 can be rotated at the same time. When the female thread 611 between the screwing rod (10) and the sleeve 61 is driven by the male thread 621, the screwing rod 62 will be telescopically displaceable relative to the sleeve 61. Thus, the sleeve 61, the two screw levers μ, the two bases 63, the plurality of helical gears 64, and the set of the link members are completed. As shown in Figures 2, 3, and 8 'the sleeve 61 is partially placed in the support rod, and the screw is used to lock the position, and the movable _ _ riser 522 is placed outside the sleeve 61, and The riser milk is further extended to the support rod 513 _, at this time, the base 6 at the top end of the screw rod 62 = the top frame body 521 of the frame 52, and the pedestal, movable 3 upper opening upwardly facing the helical gear 64 a groove 643 is exposed outside the top frame 521 (as shown in FIG. 6). After the table 4 is mounted on the top frame body 521, the opening of the base 63 is upward: the slanting tooth 10 M344073 is engaged with the groove 643 of the wheel 64 Intersecting with the through hole 41 of the table 4 (refer to (4). Further, as shown in FIG. 7, the engaging grooves 643 of the helical gear 64 opening to the left (in the illustrated direction) on the two bases 63 are aligned with the top frame of the movable frame 52. Body 521 position hole 523. Referring to Fig. 7, the connecting rod 65 is disposed between the two movable compartments of the chatting unit 5, that is, the two ends of the connecting rod 65 respectively pass through the positioning holes 523 on the top body of the two movable frames 52. And further connected to the engagement groove 643 of the corresponding helical gear 64', whereby the helical gears on both sides of the link 65 can be made to create a linked relationship. In addition, as shown in FIG. The shank 67 has a shaft portion gw having a shape corresponding to each of the engaging grooves 643. Referring to Figures 8 and 9, when the height adjusting table 3 of the present type is to be height-adjusted, only the shaft portion 671 of the crank 67 is inserted. The through hole of the table 4 is inserted into the engaging groove (10) of the upwardly facing helical gear 64. The rotary crank 64 rL can be coupled to the helical gear r by the shaft joint 671 of the crank 67. And the other helical gears 64 that are collided with the helical gear 64 are synchronously linked to each of the sleeves 61 to be telescopically displaced, and the synchronous interlocking effect generated by the transmission of the same two=65 is such that the table 4 62 The telescopic drive can be used to raise and lower the displacement. When the table is * Π height, the user can remove the handle 67 so that it does not affect the shell, the activity, and the available area of the table. 4: With the above-mentioned structural design, the new lifting table 2 can be easily operated by simply rotating the handle 67 as long as it is used. It is quite convenient to operate, and when the table 4 has reached The appropriate handle 67 can also be removed, so it will not affect the activities of the personnel, and the 11 M344073 desktop can be used, the use area In addition, the adjustment unit 6 for controlling the lifting and lowering of the table 4 is small in size and has no complicated linkage mechanism, thereby reducing the manufacturing cost. The above is only the preferred embodiment of the present invention. Therefore, the scope of the novel implementation is limited, that is, the simple equivalent changes and modifications made by the present invention in accordance with the scope of the novel application and the novel description are still within the scope of the present patent. [Simplified illustration] FIG. Figure 2 is a schematic side view of a preferred embodiment of the present invention; Figure 3 is a partial exploded view of the preferred embodiment of the present invention; Figure 3 is a partial exploded view of the preferred embodiment, in the figure Figure 4 is a partially exploded perspective view of the adjustment unit of the preferred embodiment; Figure 5 is a perspective view of the preferred embodiment showing the abutment of the top end of the threaded rod is an engagement groove with the opening facing downward Figure 6 is a top plan view of the preferred embodiment, in which the table is omitted; Figure 7 is a front view of the preferred embodiment; = 8 is a partial cross-sectional enlarged view of the preferred embodiment , The shaft of the crank handle is inserted into the through hole of the table and connected to the engaging groove of the upwardly facing helical gear; FIG. 9 is another side view of the preferred embodiment, showing that the table has risen The way. 12 M344073 [Description of main components] 3 lifting table 5 tripod unit 41 through hole 52 movable frame 62 screwing rod 6 4 helical gear 67 crank 511 bottom rod 513 support rod 522 riser 611 female thread 622 shaft joint 632 side wall 634 through hole 637, 638 perforation 642 convex shaft portion 671 shaft joint portion 4 table plate 6 adjustment unit 51 stand 61 sleeve 63 base 65 link 512 foot 521 top frame body 523 positioning hole 621 male thread 631 body 633 capacity Space 635, 636 cover 641 tooth 643 engagement groove 13