1251502 玖、發明說明 【發明所屬之技術領域】 本發明係有關折疊式桌球台，尤其是一種內折型折疊 式桌球台，其可變成左右頂板以其表面側相對之方式立起-之折疊狀態（收納狀態），以及兩頂板大致水平展開之展開狀. 態（使用狀態）。 【先前技術】 過去已知：此種桌球台具備左右頂板、設於該兩頂板 之作爲前端側之對接緣下面之內折式鉸鏈、下端具有腳輪_ 且上端側樞接於各頂板背面之左右支持腳、配設於各支持 腳與鉸鏈間之連接桿以及於左右支持腳架所架設之繫桿等 :其可變成展開位置（使用狀態），將前述連接桿之內端側樞 接於鉸鏈適當位置，同時，將前述連接桿之中間部樞接於 支持腳之中高部位，左右頂板藉此受各支持腳水平支持， 以及折疊狀態（收納狀態），左右頂板以其表面側相對之方式 立起，同時，各支持腳沿前述頂板背面立起。 | 此種內折型折疊式桌球台於上述展開狀態利用各支持胃 腳以水平支持頂板來使用，另一方面，於收納時藉由折疊 成上述折疊狀態可縮小收納空間。 【發明內容】 (一）發明所欲解決之技術問題 根據上述習知折疊式桌球台，由於左右頂板係重物， 故折疊時，若將兩頂板之後端向上推至一定位置’鉸鏈、 支持腳、連接桿等之連接功能即起作用’使兩頂板急速地 1251502 ' 大致垂直立起，又，在展開時，若將左右頂板後端向下壓 至一定位置，即同樣地，連接功能起作用，兩頂板急速展 開，雖然有可迅速展開、折疊之優點，不過，在操作時須 十分小心。 還有，由於各頂板係重物，故在上述展開、折疊時， 左右頂板後端側各站一個作業者，各作業者將頂板向上推 或向下壓至一定位置，不但需要極大勞力，而且當有一作 業者於上推、下壓同一邊頂板時之力量較強時，頂板有可 能倒向另一作業者側，因此，不但更須慎重作業，而且有 老人或兒童等操作困難之問題。 本發明係有鑑於此種習知情事而提出者，其目的在於 提供一種即使一個作業者亦容易進行左右頂板之展開、折 疊作業，同時，作業時之安全性亦佳，老人、兒童、殘障 者等亦可容易操作之折疊式桌球台。 (二）解決問題之技術手段 爲了達成以上目的，本申請案之第1發明爲一種折疊 式桌球台，係具備左右頂板1、1’、設於該兩頂板前端la、 la’對接緣背面之內折式鉸鏈2、2’、於下端具有腳輪3、3’ 並上端側樞接4、4’於各頂板背面之左右支持腳5、5、及 配設於前述各鉸鏈2、2’與支持腳5、5’間之連桿機構6、6’ ;其藉前述鉸鏈2、2’及連桿機構6、6’，可變成左右頂板 1、Γ受支持腳5、5’水平支持之展開狀態、及左右頂板1、 Γ以前述鉸鏈2、2’爲中心轉動，以其表面側相對之方式立 1251502 起，並且支持腳5、5’沿該等頂板背面立起而往內折疊之折 疊狀態；其特徵在於：於左右頂板1、Γ背面側設置對該等 頂板之朝折疊方向之轉動施以彈壓之氣體阻尼器7、7’，藉 該等氣體阻尼器來輔助前述頂板1、Γ之折疊動作並進行該 等頂板1、Γ展開時之緩衝。 於如此形成時，在左右頂板受支持腳水平支持之展開 狀態下，氣體阻尼器之伸縮桿處於收縮狀態，若自此狀態 將左右頂板朝折疊方向轉動，氣體阻尼器之伸縮桿即伸張 對兩頂板之朝折疊方向之轉動施以彈壓，藉該彈壓力並成< 折疊狀態，亦即兩頂板會以其表面側相對之方式立起，同 時支持腳沿該等項板背面立起而折疊。因此，藉由任意調 整氣體阻尼器之伸縮桿之彈力，可適當設定前述折疊動作 時左右頂板朝折疊方向之轉動速度，可大幅減輕兩頂板折 疊時所需之勞力。又，若將處於折疊狀態之兩頂板朝展開 方向轉動，氣體阻尼器之伸縮桿即因各頂板之重量而收縮 ，兩頂板就展開，此時，即使各頂板因本身重量而朝展開< 方向急速轉動，氣體阻尼器之收縮負荷（彈力）亦將轉動速度 降低，可提高展開作業之安全性。無庸贅言，藉由任意調 整氣體阻尼器之伸縮桿之彈力（收縮力），可適當設定該展開 時左右頂板朝展開方向之轉動速度。 因此，可大幅減輕頂板折疊、展開所需勞力，同時， 可大幅提高操作之安全性。 就利用上述氣體阻尼器所獲得之折疊動作之輔助功能 、展開動作時之緩衝功能之內折型折疊式桌球台之一態樣 1251502 例而言，本申請案之第2發明爲一種折疊式桌球台，係具 備左右頂板1、Γ、設於該兩頂板前端la、la’對接緣背面 之內折式鉸鏈2、2,、下端具有腳輪3、3’且上端側樞接4 、4 ’於各頂板背面之左右支持腳5、5、配设於則述各較 鏈2、2’與支持腳5、5’間之連接桿8、8’、於各頂板之左右 支持腳所架設之繫桿9、9’、及自各連接桿8、8’後端跨至 各頂板背面後部之轉動桿10、10’ ；其可變成展開狀態，將 前述連接桿8、8’前端樞接11、11’於鉸鏈2、2’下部，並. 且於該等連接桿後端樞接12、12’轉動桿10、10’前端，並# 且，將轉動桿10、10’後端以可滑動之方式樞接13、13’於 頂板背面，左右頂板1、Γ藉此受支持腳5、5’水平支持； 及折疊狀態，左右頂板1、Γ以鉸鏈2、2’爲支點轉動，以 其表面側相對之方式立起，並且支持腳5、5’沿該等頂板背 面立起而往內折疊；其特徵在於：在左右頂板1、1’背面側 設置對該等頂板之朝折疊方向之轉動施以彈壓之氣體阻尼 器7、7’，藉該等氣體阻尼器輔助前述頂板1、Γ之折疊動 作並進行該頂板1、γ展開時之緩衝。 ® 於如此形成情形下，除了本申請案之第1發明之效果 外，還因將各支持腳配置於靠近左右頂板前端側之處，故 可於各個頂板後端側之背面部份確保適當空間，可提供例 如亦可供需要輪椅之殘障者或老人、病人等使用的所謂無 障礙型桌球台。 又，就利用上述氣體阻尼器所獲得之折疊動作之輔助 功能、展開動作時之緩衝功能之內折型折疊式桌球台之另 1251502 一態樣例而言，本申請案之第3發明爲一種折疊式桌球台 ，係具備左右頂板1、Γ、設於該兩頂板前端la、la’對接 緣背面之內折式鉸鏈2、2’、下端具有腳輪3、3’且上端側 樞接4、4’於各頂板背面之左右內側支持腳5、5’、上端 側樞接14、14’於各頂板背面之左右外側支持腳15、15’ > 配設於前述各鉸鏈2、2’與外側支持腳15、15’間之連接桿 16、16’、於各頂板之左右內側支持腳所架設之繫桿9、9’ 、及自各連接桿16、16’中間部跨至各頂板背面後部之轉動1251502 玖 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠 折叠(Storage state), and the expansion of the two top panels in a horizontally horizontal state (state of use). [Prior Art] It has been known in the past that such a billiard table has left and right top plates, inner folding hinges disposed under the butting edges of the top plates on the front end side, casters _ at the lower end, and upper and lower sides pivotally connected to the left and right sides of the top plates a supporting rod, a connecting rod disposed between each supporting leg and the hinge, and a tie rod that is erected on the left and right supporting legs: it can be turned into a deployed position (used state), and the inner end side of the connecting rod is pivotally connected to the hinge In the proper position, at the same time, the middle portion of the connecting rod is pivotally connected to the middle portion of the supporting leg, the left and right top plates are horizontally supported by the supporting legs, and the folded state (accommodating state), and the left and right top plates are opposed to each other by the surface side thereof. At the same time, each support leg rises along the back surface of the aforementioned top plate. In the above-described unfolded state, the inner folding type folding table is used to support the top plate by the support stomach legs, and on the other hand, the storage space can be reduced by folding into the folded state at the time of storage. SUMMARY OF THE INVENTION (I) Technical Problem to Be Solved by the Invention According to the above-mentioned conventional folding billiard table, since the left and right top plates are heavy, when folding, if the rear ends of the two top plates are pushed up to a certain position, the hinge and the supporting foot The connecting function of the connecting rods and the like functions to make the two top plates rapidly rise vertically. In addition, when the front and rear top plates are pressed downward to a certain position, the connection function is similar. The two top panels are rapidly expanding. Although there are advantages of being able to be quickly unfolded and folded, care must be taken during operation. In addition, since each of the top plates is heavy, when the above-mentioned unfolding and folding, one operator at each of the left and right side of the left and right top plates, each operator pushes the top plate up or down to a certain position, which requires not only labor, but also labor. When an operator has a strong force when pushing up and pressing down the same top plate, the top plate may fall to the side of the other operator. Therefore, not only must the work be performed with caution, but also the operation difficulty of the elderly or children. The present invention has been made in view of such a conventional matter, and an object of the present invention is to provide an operator who can easily carry out the unfolding and folding operations of the left and right top panels, and at the same time, the safety during work is good, and the elderly, children, and the disabled can be provided. A folding billiard table that can be easily operated. (2) Technical means for solving the problem In order to achieve the above object, the first invention of the present application is a folding billiard table, which is provided with left and right top plates 1, 1', and is disposed at the front ends of the top plates of the top plates la, la' The inner folding hinges 2, 2' have the casters 3, 3' at the lower end, the upper end side pivotal joints 4, 4' are supported on the left and right side support legs 5, 5, and the respective hinges 2, 2' are arranged Supporting the linkages 6, 6' between the feet 5, 5'; by the hinges 2, 2' and the linkages 6, 6', can be turned into the left and right top panels 1, the support legs 5, 5' horizontal support The unfolded state, and the left and right top plates 1, 转动 are rotated about the hinges 2, 2', and the surface sides thereof are opposed to each other by 1251502, and the supporting legs 5, 5' are erected along the back of the top plates and folded inward. a folded state; characterized in that: gas dampers 7, 7' are provided on the left and right top plates 1, the back side of the top plate for the rotation of the top plates in the folding direction, by means of the gas dampers to assist the top plate 1, The folding action of the cymbal and the buffering of the top plate 1 and the cymbal expansion. When so formed, the telescopic rod of the gas damper is in a contracted state when the left and right top plates are supported by the support feet horizontally. If the left and right top plates are rotated in the folding direction from this state, the telescopic rod of the gas damper is stretched to two. The rotation of the top plate in the folding direction is applied by the elastic pressure, and the elastic pressure is formed into a <folded state, that is, the two top plates are erected in such a manner that their surface sides are opposite each other, and the supporting legs are folded up along the back of the plate . Therefore, by arbitrarily adjusting the elastic force of the telescopic rod of the gas damper, the rotational speed of the left and right top plates in the folding direction during the folding operation can be appropriately set, and the labor required for folding the two top plates can be greatly reduced. Moreover, if the two top plates in the folded state are rotated in the unfolding direction, the telescopic rods of the gas damper are contracted by the weight of the top plates, and the two top plates are unfolded. At this time, even if the top plates are expanded toward their own direction due to their own weight Rapid rotation, the contraction load (elastic force) of the gas damper also reduces the rotation speed, which improves the safety of the unfolding operation. Needless to say, by arbitrarily adjusting the elastic force (contraction force) of the telescopic rod of the gas damper, the rotational speed of the left and right top plates in the unfolding direction at the time of deployment can be appropriately set. Therefore, the labor required for folding and unfolding of the top plate can be greatly reduced, and at the same time, the safety of the operation can be greatly improved. The second invention of the present application is a folding billiard in the case of the folding function of the folding operation obtained by the gas damper and the cushioning function of the folding operation. The table has left and right top plates 1, Γ, inner folding hinges 2, 2 disposed at the front ends of the two top plates la, la' abutting edges, and casters 3, 3' at the lower end and pivotal joints 4, 4' at the upper end The left and right support legs 5 and 5 on the back side of each top plate, and the connecting rods 8 and 8' disposed between the respective chain 2, 2' and the support legs 5, 5', and the left and right support legs of each top plate The rods 9, 9' and the rotating rods 10, 10' extending from the rear end of each connecting rod 8, 8' to the rear part of the back surface of each top plate; they can be expanded to pivot the front ends of the connecting rods 8, 8' 11, 11 'on the lower part of the hinges 2, 2', and pivoting the ends of the rods 10, 10' at the rear ends of the connecting rods 12, 12', and #, and the rear ends of the rotating rods 10, 10' are slidable The way pivots 13, 13' are on the back of the top plate, and the left and right top plates 1 are supported horizontally by the support legs 5, 5'; and the folded state The left and right top plates 1 and Γ are rotated by the hinges 2, 2' as fulcrums, and are erected with their surface sides facing each other, and the supporting legs 5, 5' are erected along the back of the top plates and folded inward; The gas dampers 7, 7' of the top and bottom top plates 1, 1' are disposed on the back side of the top plate 1 and 1', and the gas dampers 7 and 7' are applied to the rotation of the top plate in the folding direction, and the gas dampers are used to assist the folding operation of the top plate 1 and the top plate. 1. Buffering when γ is expanded. In such a case, in addition to the effects of the first invention of the present application, since the support legs are disposed close to the front end side of the left and right top plates, an appropriate space can be secured to the back portion of the rear end side of each of the top plates. For example, a so-called barrier-free billiard table that can also be used by a disabled person who needs a wheelchair or an elderly person, a patient, or the like can be provided. Moreover, the third invention of the present application is a second aspect of the present invention, in which the auxiliary function of the folding operation obtained by the gas damper and the cushioning function of the expansion operation are further 1251502. The folding billiard table is provided with left and right top plates 1, 内, inner folding hinges 2, 2' disposed at the front ends of the two top plates la, la' abutting edges, casters 3, 3' at the lower end, and pivoting at the upper end side 4, 4' on the left and right inner side support legs 5, 5', the upper end side pivot joints 14, 14' on the left and right outer side support legs 15, 15' > disposed on each of the aforementioned hinges 2, 2' and Connecting rods 16, 16' between the outer support legs 15, 15', tie rods 9, 9' erected on the left and right inner side support legs of the top plates, and intermediate portions from the respective connecting rods 16, 16' to the rear of each top plate Rotation
II
桿10、10’ ；其可變成展開狀態，將前述連接桿16、16’ft^ 端樞接11、11’於鉸鏈2、2’下部，並且於該等連結桿中間 部樞接12、12’轉動桿10、10’前端，並且將轉動桿10、 10’之後端部以可滑動之方式樞接13、13’於頂板背面，左 右頂板1、Γ藉此受內外支持腳5、5’、15、15’水平支持； 及折疊狀態，左右頂板1、Γ以鉸鏈2、2’爲支點轉動，以 其表面側相對之方式立起，並且內外支持腳5、5’、15、 15’沿該等頂板背面立起而往內折疊；其特徵在於：於左右 頂板1、Γ之背面側設置對該等頂板之朝折疊方向之轉動施 以彈壓之氣體阻尼器7、7’，藉該等氣體阻尼器輔助前述頂 板1、Γ之折疊動作並進行該等頂板1、Γ展開時之緩衝。 於如此形成情形下，由於除了本申請案之第1發明之 效果外，還有，左右頂板受內外左右支持腳支持，故可提 供例如正式比賽亦使用的所謂一般型桌球台。 本申請案之第4發明，如上述第2或第3發明之桌球 台，其中，氣體阻尼器位於各頂板1、Γ之左或右側面，並 11 1251502 本申請案之第8發明爲一種折疊式球台用鉸鏈’係具 備左右頂板1、1’、設於該兩頂板前端la、la’對接緣背面 / 之內折式鉸鏈2、2 ’、下端具有腳輪3、3且上端側樞接4、 4’於各頂板背面之左右支特腳5、5’、及配設於前述各鉸· 鏈2、2’與支持腳5、5’間之連桿機構6、6’ ’藉前述鉸鏈2 . 、2’及連桿機構6、6’可變成左右頂板1、Γ受支持腳5、5’ 水平支持之展開狀態，以及左右頂板1、Γ以前述鉸鏈2、 2’爲中心轉動，以其表面側相對之方式立起，並且支持腳5 、5’沿該等頂板背面立起而往內折疊之折疊狀態；其特徵® · 在於：上述各f交鏈2、2’由樞接20成相互轉動自如之左右 轉動板21、21’所構成，各轉動板21、21’於上部具有前側 樞接部22、22’及後側樞接部23、23’，於下部則具有下側 樞接部24、24’，於左右頂板1、Γ之各左右側緣背面設有 補強構件30、30’，在靠近補強構件前端la、la’之導槽31 、31’以滑動自如之方式樞接32、32’於後側樞接部23、23’ ，前述樞接部22、22’則跨過上述對接緣樞接33、33’於另 -頂板之補強構件30、30,前端la、la，處，並且將下側樞·· 接部24、24’樞接11、11’於連桿機構6、6’之連接部8、 8’或16、16’前端。 【實施方式】 以下參考圖式，說明本發明實施例。 第1圖至第4圖顯示所謂無障礙型折疊式桌球台例子 ’該桌球台A，係具備左右頂板1、1，、內折式鉸鏈2、2， 、具有腳輪3、3,之左右支持腳5、5,、配設於前述鉸鏈2 13 1251502 、2與支持腳5、5 ’間之連桿機構6、6 ’、氣體阻尼器7、7 ’ 等，其可變成展開狀態，左右頂板1、1’藉支持腳5、5,水 平支持，以及折疊狀態，左右頂板1、1’以表面側相對之方 式立起，同時支持腳5、5’沿此頂板背面立起而往內折疊。· 亦即，左右頂板1、1’藉鉸鏈2、2’以朝內折方向轉動. 自如之方式相連，該鉸鏈2、2’係以跨過各頂板前端la、The rods 10, 10' can be turned into an unfolded state, and the connecting rods 16, 16'ft end are pivotally connected 11, 11' to the lower portions of the hinges 2, 2', and pivotally connected to the intermediate portions of the connecting rods 12, 12 'Rotating the front ends of the rods 10, 10', and pivotally connecting the rear ends of the rotating rods 10, 10' to the back of the top plate in a slidable manner, and the left and right top plates 1, Γ are thereby supported by the inner and outer support legs 5, 5' , 15, 15' horizontal support; and folded state, the left and right top plates 1, Γ with the hinges 2, 2' as the fulcrum, erected with the surface side opposite, and the inner and outer support feet 5, 5', 15, 15' Folding along the back surface of the top plate and folding inward; the gas dampers 7, 7' for applying the springs of the top plates to the folding direction are provided on the back sides of the left and right top plates 1 The gas damper assists the folding operation of the top plate 1 and the cymbal, and buffers the top plate 1 and the raft. In the case of such a formation, in addition to the effects of the first invention of the present application, the left and right top plates are supported by the inner and outer left and right support legs, so that a so-called general type table for use in, for example, a regular game can be provided. According to a fourth aspect of the present invention, the billiard table of the second or third aspect, wherein the gas damper is located on the left or right side of each of the top plates 1, and 11 1251502, the eighth invention of the present application is a folding The hinge for the table has the left and right top plates 1, 1', the inner folding hinges 2, 2' provided on the back of the abutting edges of the top ends of the top plates la, la', the casters 3, 3 at the lower end and the pivoting at the upper end 4 4', the left and right support legs 5, 5' on the back of each top plate, and the link mechanisms 6, 6'' disposed between the hinges 2, 2' and the support legs 5, 5' 2, 2' and the linkage mechanism 6, 6' can be turned into a left and right top plate 1, the supported state of the support legs 5, 5' horizontal support, and the left and right top plates 1, 转动 are rotated around the aforementioned hinges 2, 2', a folded state in which the surface sides thereof are opposed to each other, and supporting the legs 5, 5' to be folded up along the back surface of the top plate; the feature is that the above-mentioned f-links 2, 2' are pivotally connected 20% of the left and right rotating plates 21, 21' are mutually rotatable, and each of the rotating plates 21, 21' has a front side pivotal connection at the upper portion. 22, 22' and the rear side pivotal portions 23, 23' have a lower pivotal portion 24, 24' at the lower portion, and reinforcing members 30, 30' are provided on the back sides of the left and right side edges of the left and right top plates 1, The guide grooves 31, 31' near the front end la, la' of the reinforcing member are pivotally connected to the rear side pivot portions 23, 23' in a sliding manner, and the pivot portions 22, 22' cross over the above The butt joint pivots 33, 33' are at the front-end reinforcing members 30, 30, the front ends la, la, and the lower pivot joints 24, 24' are pivoted 11, 11' to the link mechanism 6 , 6' connection portion 8, 8' or 16, 16' front end. [Embodiment] Hereinafter, embodiments of the invention will be described with reference to the drawings. Fig. 1 to Fig. 4 show an example of a so-called barrier-free folding billiard table. The billiard table A has left and right top plates 1, 1, and inner folding hinges 2, 2, and has casters 3, 3, and left and right support. The feet 5, 5, and the link mechanisms 6, 6' disposed between the hinges 2 13 1251502 and 2 and the support legs 5, 5', the gas dampers 7, 7', etc., can be expanded, and the left and right top plates 1, 1' by support feet 5, 5, horizontal support, and folded state, the left and right top plates 1, 1' stand up in opposite directions on the surface side, while the support legs 5, 5' stand up along the back of the top plate and fold inward . That is, the left and right top plates 1, 1' are rotated in the inwardly folded direction by the hinges 2, 2'. The hinges 2, 2' are connected across the front end of each top plate,
la’(兩頂板1、Γ對接緣）之方式設於頂板背面。如第5至7 圖放大顯示，該鉸鏈2、2’由相互以轉動自如之方式樞接 20 —起之左右轉動板21、21’所構成。 ® 各轉動板21、21’於上部具有前側樞接部22、22,及後 側樞接部23、23’，於下部具有下側樞接部24、24’，在左 右頂板1、Γ之各左右側緣背面設有補強構件30、30,，在 靠近補強構件前端la、la’之導槽31、31’以滑動且轉動自 如之方式樞接32、32’後側樞接部23、23’前側樞接部22、La' (two top plates 1, Γ butt edges) is provided on the back of the top plate. As shown in an enlarged view of Figs. 5 to 7, the hinges 2, 2' are constituted by left and right rotating plates 21, 21' pivotally connected to each other in a rotatable manner. ® Each of the rotating plates 21, 21' has a front side pivoting portion 22, 22 and a rear side pivoting portion 23, 23' at the upper portion, and a lower side pivoting portion 24, 24' at the lower portion, on the left and right top plates 1, Reinforcing members 30 and 30 are disposed on the back sides of the left and right side edges, and the rear side pivoting portions 23 are pivotally and rotatably supported by the guide grooves 31, 31' adjacent to the front ends la, la' of the reinforcing member. 23' front side pivoting portion 22,
22’則跨過上述對接緣以可轉動自如之方式樞接33、33,樞 接於靠近另一頂板之補強構件30、30’前端la、la’處，且 將下側樞接部24、24’以可轉動自如之方式樞接11、π’於_ 連桿機構6、6’之連接部8、8’或16、16’之前端。 連桿機構6、6’具備配設於前述各鉸鏈2、2’與支持腳 5、5’間之連接桿8、8’、於頂板1、Γ之左右支持腳5、5、 5’、5’所架設之繫桿9、9’、及自各連接桿8、8’跨至各頂 板背面後部之轉動桿10、10’等。連接桿8、8’前端轉動自 如地樞接11、11’於鉸鏈2、2’之下部樞接部，於該連接桿 後端轉動自如地樞接12、12’轉動桿10、10’前端。於頂板 14 1251502 者之適當彈力。又，藉由適當設定該彈力，可用氣體阻尼 器7、7’在朝展開方向轉動左右頂板1、Γ時減輕頂板1、Γ 之撞擊力，緩和左右頂板1、Γ展開時之撞擊。 又，本例子之桌球台A具備可以可解除之方式鎖緊左· 右頂板1、Γ之折疊狀態、展開狀態之鎖緊機構50、50’、. 於左右頂板1、1’之展開狀態（使用狀態）中調整各頂板1、 1’之水平度之調整機構60、60’、防止折疊左右頂板1、1’ 時各頂板1、Γ之表面側之密合之撞擊吸收材80、80’等。 如第8圖、第9A至9C圖所示，鎖緊機構50、50’，係® · 在轉動架10、10’之樞接軸51(滑動自如地插入導槽35)外端 側設有轉動該樞接軸51之旋鈕52，並且具有與設於樞接軸 51內端側之螺紋部螺合之螺帽構件53,朝旋緊方向轉動旋 鈕52，以該旋鈕與螺帽構件53夾持板36，使樞接軸51不 能滑動，以鎖緊頂板1、Γ之折疊狀態、展開狀態，另一方 面，朝旋鬆方向轉動旋鈕52，解除該旋鈕52與螺帽構件 53對前述板36之夾持，使樞接軸51可自由滑動，以進行 左右頂板1、1’之折疊動作、展開動作。 _ · 如第8圖、第9A至9C圖所示，調整機構60、60,，係 於上述板36外端，將接近脫離轉動桿1〇、1〇,之螺軸61配 置成相對於轉動桿10、10’可螺動進退自如，同時，設有轉 動該螺軸61之旋鈕62，藉由該旋鈕62之正向轉動操作， 螺軸61壓迫轉動桿10、10’，藉此使轉動桿1〇、1〇,後端上 昇，將左右頂板1、Γ之角部往上推（參考第9B圖），另一 方面，藉由旋鈕62之逆向轉動操作，螺軸61脫離轉動桿 16 1251502 之方式立起，同時，支持腳5、5’沿該頂板1、Γ背面立起 而折疊（參考第2圖至第3圖）。該折疊作業，係可以一人作 業者站立於左右頂板1、Γ對接緣側邊，朝折疊方向轉動兩 頂板1、Γ來進行。又，此時，撞擊吸收材80、80’抵接左 右支持腳5、5’內側，防止在該折疊時，兩頂板1、Γ之表 面側密合，前述作業者可不用擔心手指被兩頂板1、Γ夾到 之下進行折疊作業。 該折疊完成後，在各鎖緊機構50、50’將旋鈕52往鎖 緊方向轉動使樞接軸51不能滑動，防止氣體阻尼器7、7’< 之收縮作動，而鎖緊折疊狀態。 在將桌球台自第3圖所示折疊狀態恢復展開狀態情形 下，於各個鎖緊機構50、50’中，朝旋鬆方向轉動旋鈕52， 解除前述折疊狀態之鎖緊後，若朝展開方向將左右頂板1、 Γ壓下既定量，氣體阻尼器7、7’之桿18、18’即會因各頂 板1、Γ之重量而收縮，同時，兩頂板1、Γ藉本身重量轉 動而恢復爲受支持腳5、5’水平支持之展開狀態。此時，藉 氣體阻尼器7、7’之彈力承受頂板1、Γ之撞擊力，使頂板1 1、Γ之轉動變慢，減緩頂板1、Γ展開時之撞擊，可確保 作業之安全性並減低展開時之聲響。 於第10圖至第13圖顯示正式比賽用或身體健全者等 使用的所謂一般型折疊式桌球台Α’。此桌球台Α’於第1圖 至第9Α至9C圖所說明之桌球台Α添加外側支持腳15、 15’，並且設置調整機構70、70’而不設置前述調整機構60 、60’，由於其它構成元件與前述桌球台A相同，故於圖中 18 1251502 標示與上述相同之符號，省略會重複之說明、圖式，以下 僅說明不同點。 / 亦即，此例子之桌球台A’，係以前述支持腳5、5’作 爲內側5、5’，並於靠近頂板1、Γ之後端具有外側支持腳· 15、15’，該外側支持腳15、15’，係於下端具有調整機構. 70、70’，上端側轉動自如地樞接14、14’於各頂板背面； 藉由該等內外支持腳5、5’、15、15’來構成正式比賽用或 身體健全者等所使用之所謂一般型折疊式桌球台。 於該桌球台A’中，不具有上述連接桿8、8’，而具備® · 配設於各鉸鏈2、2’與外側支持腳15、15’間之連接桿16、 16’，轉動桿10、10’自各連接桿16、16’中間部跨至各頂板 背面後部。又，將連接桿16、16’前端轉動自如地樞接11、 11’於鉸鏈2、2’下部，並且於該連接桿中間部轉動自如地 樞接12、12’轉動桿10、10’前端，並且將轉動桿10、10’後 端部以可轉且滑動之方式樞接13、13’於頂板背面，將連 接桿16、16’後端轉動自如地樞接19’19’於外側支持腳15、 15’，桌球台A’藉此構成可變成：左右頂板1、Γ受內外支® ^ 持腳5、5’、15、15’水平支持之展開狀態，以及左右頂板1 、Γ以鉸鏈2、2’爲支點轉動，以其表面側相對之方式立起 ，並且內外支持腳5、5’、15、15’沿此頂板背面立起而往 內折疊之折疊狀態。 此例子之調整機構70、70’，係與各外側支持腳15、 15’下端螺合之螺軸71、71’下端安裝有調整腳72、72’，藉 由該調整腳72、72’之正向轉動操作，該調整腳72、72’會 19 1251502 上昇，將左右頂板1、r之角部往上推，另一方面，藉由調 . 整腳72、72’之逆向轉動操作，該調整腳72、72’會下降， / 使左右頂板1、Γ之角部下降。 ’ 以上構造之折疊式桌球台Α’之使用方法基本上與前述· 桌球台Α相同，使用時，如第10圖所示，左右頂板1、Γ . 處於受內外支持腳5、5、15、15’水平支持之展開狀態，此 時，氣體阻尼器7、7’處於收縮狀態，同時，藉各個鎖緊機 構50、50’防止氣體阻尼器7、7’之伸張動作，鎖緊該展開 狀態。又，此時在因與安置地面B間之關係以致於左右θ ® 板1、Γ之水平度發生偏差情形下，於左右頂板1、Γ之各 角部之任意調整機構70、70’中，朝正或逆方向轉動調整腳 72、72’，使頂板1、Γ之角部上昇或下降，以調整水平度 在收納桌球台A’情形下，於各鎖緊機構50、50’中， 朝旋鬆方向轉動旋鈕52，使氣體阻尼器7、7’可伸展，而 解除展開狀態之鎖緊，此後，朝折疊方向將左右頂板1、Γ 稍往上推，氣體阻尼器7、7’之桿18、18’即伸張，藉此彈^ 壓力，兩頂板1、1’朝折疊方向轉動，該兩頂板1、1’以其 表面側相對之方式立起，並且內外支持腳5、5’、15、15’ 沿此頂板1、Γ背面立起而折疊（參考11圖至第12圖）。該 折疊作業亦可藉由一人作業者站立於左右頂板1、Γ對接緣 之側邊，朝折疊方向轉動兩頂板1、Γ來進行。又，此時， 撞擊吸收材80、80’防止該折疊時兩頂板1、1’之表面側密 合，前述作業者可在不擔心手指被兩頂板夾到下進行折疊 20 1251502 作業。 在該折疊完成後，於各鎖緊機構50、50’中，朝旋緊方 向轉動旋鈕52，防止氣體阻尼器7、7’之收縮動作，以鎖 緊折疊狀態。 . 於從第12圖所示折疊狀態恢復展開狀態情形下，操作. 各鎖緊機構50、50’，解除前述折疊狀態之鎖緊，此後，若 朝展開方向將左右頂板1、Γ壓下既定量，氣體阻尼器7、 7’即因各頂板1、Γ之重量而收縮，同時，兩頂板1、1’因 本身重量而轉動，桌球台就恢復成受內外支持腳5、5’、1# · 、15’水平支持之展開狀態。此時，藉氣體阻尼器7、7’之 彈力承受頂板1、Γ之撞撃力，使頂板1、Γ之轉動變慢， 減緩頂板1、Γ展開時之撞擊，可確保作業之安全性並減低 展開時之聲響。 以上固然參考圖式說明本發明折疊式桌球台之實施例 ，不過，本發明不限於圖示例子，無庸贅言，可在各項申 請專利範圍所記載之技術思想之範疇內作各種變更。 由於本發明折疊式桌球台娜上說明誠，故可達# * 如以下記載之效果。 根據第1發明，由於藉氣體阻尼器之彈力，可輔助左 右頂板朝折疊方向之轉動動作，同時可減緩展開處於折疊 狀態之左右頂板時作業者所承受之負擔，並可減低頂板展 開時之落下撞擊聲響，故容易、迅速且安靜地進行桌球台 之收納、安置作業，特別是亦考慮到兒童或老人、殘障等 之操作，藉由使用氣體阻尼器，一人作業者可站立於左右 21 1251502 頂板對接緣附近之側面，一面環顧四周，一面進行左右頂 板之折疊、展開作業，在確認桌球台周圍無障礙物或人之 後才進行作業。因此，可提供一種收納時、使用時之操作 性佳且安全性高之新穎折疊式桌球台。 根據第2發明，除了第1發明之效果外，提供例如亦 可供需要輪椅之殘障者、老人、病人等使用的所謂無障礙 型桌球台。22' is pivotally connected 33, 33 in a rotatable manner across the mating edge, pivotally connected to the front end la, la' of the reinforcing member 30, 30' near the other top plate, and the lower pivot portion 24, 24' is pivotally connected to the front end of the connection portion 8, 8' or 16, 16' of the _ linkage mechanism 6, 6' in a rotatable manner. The link mechanisms 6 and 6' are provided with connecting rods 8 and 8' disposed between the hinges 2, 2' and the supporting legs 5, 5', and the left and right supporting legs 5, 5, 5' of the top plate 1, 5's erected tie rods 9, 9', and rotating rods 10, 10' extending from the respective connecting rods 8, 8' to the rear of each of the top panels. The front ends of the connecting rods 8, 8' are pivotally connected to the pivoting portions of the hinges 2, 2' at the lower ends of the hinges 2, 2', and are pivotally connected to the rear ends of the connecting rods 12, 12' to rotate the rods 10, 10' . Appropriate elasticity of the top plate 14 1251502. Further, by appropriately setting the elastic force, the gas dampers 7, 7' can be used to reduce the impact force of the top plate 1, the cymbal when the left and right top plates 1 and Γ are rotated in the unfolding direction, and the impact of the left and right top plates 1 and Γ is unfolded. Further, the billiard table A of the present example is provided with a locking mechanism 50, 50' which can lock the left and right top plates 1, the folded state and the unfolded state, and the unfolded state of the left and right top plates 1, 1' ( In the state of use), the adjustment mechanisms 60, 60' for adjusting the horizontalness of each of the top plates 1, 1', and the impact absorbing materials 80, 80' for preventing the adhesion of the top side of each of the top plates 1, 1 of the top and bottom top plates 1, 1' Wait. As shown in Fig. 8 and Figs. 9A to 9C, the locking mechanism 50, 50' is provided on the outer end side of the pivot shaft 51 of the turret 10, 10' (slidably inserted into the guide groove 35). Rotating the knob 52 of the pivot shaft 51 and having a nut member 53 screwed to the threaded portion provided on the inner end side of the pivot shaft 51, the knob 52 is rotated in the tightening direction, and the knob is clamped with the nut member 53 Holding the plate 36, the pivot shaft 51 cannot be slid to lock the folded state of the top plate 1, the cymbal, and the unfolded state. On the other hand, the knob 52 is rotated in the loosening direction, and the knob 52 and the nut member 53 are released from the plate. The clamping of 36 allows the pivoting shaft 51 to slide freely to perform the folding operation and the unfolding operation of the left and right top plates 1, 1'. _ · As shown in Fig. 8 and Figs. 9A to 9C, the adjusting mechanisms 60, 60 are attached to the outer end of the plate 36, and are disposed close to the rotating lever 1〇, 1〇, and the screw shaft 61 is arranged to rotate relative to the rotation. The rods 10, 10' can be screwed forward and backward, and at the same time, a knob 62 for rotating the screw shaft 61 is provided. By the forward rotation operation of the knob 62, the screw shaft 61 presses the rotating rods 10, 10', thereby rotating The rods 1〇, 1〇, the rear end rises, pushes the corners of the left and right top plates 1 and Γ upwards (refer to FIG. 9B), and on the other hand, the screw shaft 61 is disengaged from the rotating rod 16 by the reverse rotation operation of the knob 62. In the manner of 1251502, the support legs 5, 5' are folded up along the top plate 1 and the back of the top plate (refer to Figs. 2 to 3). The folding operation can be performed by a single person standing on the left and right top plates 1, the sides of the butt joints, and rotating the top plates 1 and Γ in the folding direction. Further, at this time, the impact absorbing members 80, 80' abut against the inside of the left and right support legs 5, 5', and the surface sides of the top plates 1 and Γ are prevented from being closed during the folding, and the operator can be prevented from being touched by the two top plates. 1. Fold the work under the clamp. After the folding is completed, the knobs 52 are rotated in the locking direction by the respective locking mechanisms 50, 50' so that the pivot shaft 51 cannot slide, preventing the contraction of the gas dampers 7, 7'<, and locking the folded state. In the case where the billiard table is restored from the folded state shown in FIG. 3, in each of the locking mechanisms 50, 50', the knob 52 is rotated in the loosening direction, and the locking state is released, and if the locking direction is released, When the left and right top plates 1 and Γ are pressed down, the rods 18, 18' of the gas dampers 7, 7' will shrink due to the weight of each top plate 1, and at the same time, the two top plates 1 will be restored by their own weight rotation. The expanded state is supported by the supported foot 5, 5' level. At this time, the elastic force of the gas dampers 7, 7' is subjected to the impact force of the top plate 1, the cymbal, so that the rotation of the top plate 1 1 and the cymbal is slowed down, and the impact of the top plate 1 and the raft is unfolded, thereby ensuring the safety of the operation and Reduce the sound when unfolding. The so-called general-type folding billiard table Α used for official competition or physical fitness is shown in Figs. 10 to 13 . This billiard table Α adds the outer support legs 15, 15' to the billiard table illustrated in Figures 1 to 9Α to 9C, and sets the adjustment mechanisms 70, 70' without providing the aforementioned adjustment mechanisms 60, 60' due to The other constituent elements are the same as those of the billiard table A. Therefore, the same reference numerals are given to the above-mentioned 18 1251502 in the drawings, and the description and drawings will be omitted, and only differences will be described below. / That is, the billiard table A' of this example has the support legs 5, 5' as the inner side 5, 5', and has an outer support leg 15, 15' near the top plate 1, the rear end, the outer support The feet 15, 15' have an adjustment mechanism at the lower end. 70, 70', the upper end side is pivotally connected 14, 14' to the back of each top plate; by means of the inner and outer support legs 5, 5', 15, 15' It is a so-called general folding table table used for official competition or physical fitness. In the bill table A', the connecting rods 8 and 8' are not provided, and the connecting rods 16 and 16' disposed between the hinges 2, 2' and the outer supporting legs 15 and 15' are provided. 10, 10' spans from the middle of each connecting rod 16, 16' to the rear of the back of each top plate. Further, the front ends of the connecting rods 16, 16' are rotatably pivotally connected to the lower portions of the hinges 2, 2', and are pivotally connected to the intermediate portions of the connecting rods 12, 12' to rotate the rods 10, 10'. And the rear end portion of the rotating rod 10, 10' is pivotally and slidably connected to the back surface of the top plate, and the rear end of the connecting rod 16, 16' is pivotally connected 19'19' to support the outer side. The feet 15, 15', the billiard table A' can be configured to be: the left and right top plates 1, the inner and outer supports, the support legs 5, 5', 15, 15' horizontally supported in an unfolded state, and the left and right top plates 1 and The hinges 2, 2' are rotated by the fulcrum, and are erected in such a manner that their surface sides are opposed to each other, and the inner and outer support legs 5, 5', 15, 15' are folded up along the back surface of the top plate to be folded inwardly. The adjustment mechanism 70, 70' of this example is provided with adjustment legs 72, 72' at the lower ends of the screw shafts 71, 71' screwed to the lower ends of the outer support legs 15, 15', by means of the adjustment legs 72, 72' In the forward rotation operation, the adjusting legs 72, 72' will rise 191251502, push up the corners of the left and right top plates 1, r, and on the other hand, by adjusting the reverse rotation of the whole legs 72, 72', The adjustment legs 72, 72' are lowered, and the corners of the left and right top plates 1, Γ are lowered. The use method of the above-mentioned folding billiard table 基本上 is basically the same as that of the above-mentioned billiard table ,. When used, as shown in Fig. 10, the left and right top plates 1, Γ are in the inner and outer support legs 5, 5, 15, The unfolded state of the 15' horizontal support, at this time, the gas dampers 7, 7' are in a contracted state, and at the same time, the stretching action of the gas dampers 7, 7' is prevented by the respective locking mechanisms 50, 50', and the unfolded state is locked. . Further, at this time, in the case where the relationship between the left and right θ ® plates 1 and Γ varies due to the relationship with the ground floor B, in any of the adjustment mechanisms 70, 70' of the corner portions of the left and right top plates 1 and Γ, Rotate the adjusting feet 72, 72' in the positive or negative direction to raise or lower the corners of the top plate 1 and the top to adjust the level in the case of the storage table A', in each of the locking mechanisms 50, 50' Rotating the knob 52 in the loosening direction, the gas dampers 7, 7' can be extended, and the unlocking state is locked. Thereafter, the left and right top plates 1, Γ are pushed up in the folding direction, and the gas dampers 7, 7' The rods 18, 18' are stretched, whereby the two top plates 1, 1' are rotated in the folding direction by the pressure of the elastic force, the two top plates 1, 1' are erected with their surface sides facing each other, and the inner and outer support legs 5, 5' , 15, 15' Fold along the top of the top plate 1 and the back of the raft (refer to Figure 11 to Figure 12). The folding operation can also be performed by a single person standing on the side of the right and left top panels 1 and the butt joint edge, and rotating the top panels 1 and Γ in the folding direction. Further, at this time, the impact absorbing members 80, 80' prevent the surface sides of the top sheets 1, 1' from being closed at the time of folding, and the operator can perform the folding operation without fear of the fingers being pinched by the two top sheets. After the folding is completed, in each of the locking mechanisms 50, 50', the knob 52 is rotated in the screwing direction to prevent the contraction of the gas dampers 7, 7' to lock the folded state. In the case where the unfolded state is restored from the folded state shown in Fig. 12, the locking mechanisms 50, 50' are unlocked in the folded state, and thereafter, the left and right top plates 1 and 2 are pressed in the unfolding direction. The gas dampers 7, 7' are contracted by the weight of each top plate 1, and the two top plates 1, 1' are rotated by their own weight, and the table table is restored to the inner and outer support legs 5, 5', 1 # · , 15' level support expansion status. At this time, the elastic force of the gas dampers 7, 7' is subjected to the impact force of the top plate 1 and the cymbal, so that the rotation of the top plate 1 and the cymbal is slowed down, and the impact of the top plate 1 and the raft is reduced, thereby ensuring the safety of the operation and Reduce the sound when unfolding. Although the embodiment of the folding table table of the present invention is described above with reference to the drawings, the present invention is not limited to the illustrated examples, and it is needless to say that various modifications can be made within the scope of the technical idea described in the claims. Since the folding billiard table on the present invention is described as honest, it can reach #* as described below. According to the first aspect of the invention, the elastic force of the gas damper can assist the rotation of the left and right top plates in the folding direction, and at the same time, the burden on the operator when unfolding the left and right top plates in the folded state can be reduced, and the falling of the top plate can be reduced. The impact sounds, so it is easy, quick and quiet to carry out the storage and placement of the billiard table, especially considering the operation of children or the elderly, disability, etc. By using the gas damper, one person can stand on the left and right 21 1251502 top plate On the side near the edge of the joint, while looking around, the left and right top panels are folded and unfolded, and work is performed after confirming that there is no obstacle or person around the billiard table. Therefore, it is possible to provide a novel folding billiard table which is excellent in operability and safety when stored and used. According to the second aspect of the invention, in addition to the effects of the first aspect of the invention, for example, a so-called barrier-free billiard table that can be used for a person with a wheelchair, an elderly person, a patient or the like is provided.
根據第3發明，除了第1發明之效果外，可提供例如 亦可用於正式化賽等的所謂一般型桌球台。 < 根據第4發明，除了第1至第3發明之效果外，由於 可使用最少的氣阻尼器，也可輔助左右頂板之折疊動作以 及進行兩頂板展開時之緩衝，故可減低與零件數目減少或 裝配有關之勞力、成本等。According to the third aspect of the invention, in addition to the effects of the first invention, for example, a so-called general billiard table which can be used for a formal game or the like can be provided. < According to the fourth invention, in addition to the effects of the first to third inventions, since the minimum air damper can be used, the folding operation of the right and left top plates and the buffering of the two top plates can be assisted, so that the number of parts can be reduced. Reduce or assemble related labor, costs, etc.
根據第5發明，除了第1至第4發明之效果外，在桌 球台使用中或折疊狀態之搬運中、收納中等不會誤使氣體 阻尼器作動而折疊或展開左右頂板，可進一步提高操作之 安全性。 根據第6發明，除了第1至第5發明之效果外，即使 因與安置桌球台之地面間之關係等以致於左右頂板之水平 度發生偏差，亦可藉由調整機構之操作，修正其水平度。 根據第7發明，除了第1至第6發明之效果外，可藉 撞擊吸收防止左右頂板折疊時之各頂板表面側之密合，進 一步提高折疊作業之安全性。 根據第8發明，可提供一種利用設於頂板背面之補強 22 1251502 構件來將左右頂板以內折式、轉動自如之方式相連之鉸鏈 ，可提供一種相較於習知鉸鏈，減少零件數，同時簡化對 頂板之安裝，並適合內折型折疊式桌球台之鉸鏈。 【圖式簡單說明】 (一）圖式部分 第1圖係顯示本發明一實施例之展開狀態（使用狀態）之 側視圖。 第2圖係顯示第1圖之展開或折疊中途狀態之側視圖According to the fifth aspect of the invention, in addition to the effects of the first to fourth inventions, it is possible to further increase the operation of the billiard table during the use of the billiard table or during the conveyance in the folded state, without erroneously causing the gas damper to move or fold the left and right top plates. safety. According to the sixth invention, in addition to the effects of the first to fifth inventions, even if the relationship between the left and right top plates is deviated due to the relationship with the ground of the table table, etc., the level of the adjustment mechanism can be corrected by the operation of the adjustment mechanism. degree. According to the seventh aspect of the invention, in addition to the effects of the first to sixth inventions, the adhesion of the top surface sides of the top sheets when the left and right top sheets are folded can be prevented by the impact absorption, thereby further improving the safety of the folding operation. According to the eighth aspect of the invention, it is possible to provide a hinge in which the left and right top plates are connected in an inward-folding manner and rotatably by means of a reinforcing member 221251502 provided on the back surface of the top plate, which can provide a reduction in the number of parts and simplify at the same time as compared with the conventional hinge. It is mounted on the top plate and is suitable for the hinge of the folding table billiard table. BRIEF DESCRIPTION OF THE DRAWINGS (1) Schematic portion Fig. 1 is a side view showing an unfolded state (a state of use) of an embodiment of the present invention. Figure 2 is a side view showing the state of the expansion or folding of Figure 1
第3圖係顯示第1圖之折疊狀態（收納狀態）之側視圖。 第4圖係第2圖之立體圖。 第5圖係第1圖之鉸鏈部份之放大圖。 第6圖係第2圖之鉸鏈部份之放大圖。 第7圖係第3圖之鉸鏈部份之放大圖。 第8圖係展開狀態之鎖緊機構、調整機構部份之放大 立體圖。 第9A至9C圖係展開狀態之鎖緊機構、調整機構部份* 之放大圖，顯示藉調整機構所作之調整程序。 第10圖係顯示本發明另一實施例之展開狀態（使用狀 態）之側視圖。 第11圖係顯示第10圖之展開或折疊中途狀態之側視 圖。 第12圖係顯示第10圖之折疊狀態（收納狀態）之側視圖 23 1251502 第13圖係第11圖之立體圖。 (二）元件代表符號 卜1， 頂板 la 、 la， 頂板前端 2，，2， 鉸鏈 3、3， 腳輪 5 、 55 、 15 、 15” 支持腳 6、6， 連桿機構 Ί、Ί， 氣體阻尼器 8 、 8’ 、 16 、 16’ 連接桿 9 ' 9， 繫桿 10 、 10， 轉動桿 18 、 18， 伸縮桿 12 、 12， 伸縮桿 2 卜 21， 轉動板 22 、 22， 前側樞接部 23 、 23， 後側樞接部 24 、 24， 下側樞接部 30 、 30， 補強構件 50 鎖緊機構 60 、 60, 、 70 、 70， 調整機構 80 、 80， 減震器 24Fig. 3 is a side view showing the folded state (storage state) of Fig. 1. Fig. 4 is a perspective view of Fig. 2. Figure 5 is an enlarged view of the hinge portion of Figure 1. Figure 6 is an enlarged view of the hinge portion of Figure 2. Figure 7 is an enlarged view of the hinge portion of Figure 3. Fig. 8 is an enlarged perspective view showing the locking mechanism and the adjustment mechanism of the unfolded state. Figures 9A to 9C are enlarged views of the locking mechanism and the adjustment mechanism portion* in the unfolded state, showing the adjustment procedure by the adjustment mechanism. Fig. 10 is a side view showing the unfolded state (usage state) of another embodiment of the present invention. Fig. 11 is a side view showing the state in the middle of the unfolding or folding of Fig. 10. Fig. 12 is a side view showing the folded state (storage state) of Fig. 10 23 1251502 Fig. 13 is a perspective view of Fig. 11. (2) Component symbol 1 , top plate la, la, top plate front 2, 2, hinge 3, 3, casters 5, 55, 15 , 15” support legs 6, 6 , linkage mechanism Ί, Ί, gas damping 8 , 8 ' , 16 , 16 ' connecting rod 9 ' 9, tie rods 10, 10, rotating rods 18, 18, telescopic rods 12, 12, telescopic rods 2, 21, rotating plates 22, 22, front side pivoting 23, 23, rear side pivoting portions 24, 24, lower side pivoting portions 30, 30, reinforcing member 50 locking mechanisms 60, 60, 70, 70, adjusting mechanisms 80, 80, shock absorber 24