M433971 五、 [0001] [0002] 新型說明： 【新型所屬之技術領域】 本創作是有關於一種腳輪結構，且特別是有關於一 種具有鎖定裝置的腳輪結構。 【先前技術】 腳輪普遍運用於需要推動、滑動的物件，例如辦公 椅、家具、推車或病床，腳輪裝設於此些物件的複數支 腳底部，可使其便於移動。而在許多應用狀況上，腳輪 需要具備鎖定與非鎖定兩種狀態，以在非鎖定狀態下具 備運送或移動其所承載的物件的功能，以及在鎖定狀態 下具有穩固物件的功能。舉例來說，以裝有腳輪的推床 運送躺在其上的病患去進行診療，例如進行斷層掃描檢 查，到達目的地時需要抬起或扶助病患以將之移動到掃 描平台上，此時就需要鎖定腳輪以穩固推床，避免發生 意外。 [0003] 習知的腳輪結構包括有主體、主體兩側的側輪，以 及連接主體與所承載標的之相關承載構件的垂直軸承與 軸部。側輪可在垂直面旋轉/，垂直軸承與轴部可在水平 面旋轉，因此承載構件如椅腳、床腳或其上的承載標的 ，可以透過腳輪前進、後退以及進行順、逆時針旋轉。 將腳輪組裝於承載構件上時，通常需要額外的工具固定 住轴部，再將承載構件透過例如軸部頂端的螺紋鎖接。 若不以工具固定軸部，則在鎖接的過程，軸部會受力而 連動旋轉，無法順利鎖接。用以鎖定腳輪在垂直面的旋 轉的結構，是在側輪的内環面環繞固定有内環齒部，而 10120347^單编號删1 第4頁/共24頁 1012011042-0 M433971 主體内部則設置有相應内環齒部的卡合元件。在非鎖定 狀態下，卡合元件遠離内環齒部，在鎖定時，卡合元件 則卡嵌於内環齒部，使側輪無法旋轉。另外，用以鎖定 腳輪在水平面的旋轉的結構，是額外設置相應的鎖定裝 置，例如在軸部底部設置有另一組齒部，主體内部則設 置有另一組相應的卡合元件。 【新型内容】 [0004] 有鑑於此，本創作的目的在提出一種腳輪結構，其 在將腳輪組裝於具有連動鎖定功能的連動裝置之承載構 件時，可不需使用額外的工具就能鎖接腳輪於承載構件 的連動裝置上，並簡化連動鎖定用的結構。 [0005] 為達到上述目的，本創作提出一種腳輪結構，其包 括主體、側輪、水平軸承與軸部。主體具有主體支承部 、套管部與容置空間，主體支承部透設有主體水平通孔 ，主體水平通孔從主體的一侧面水平延伸至其另一側面 ，容置空間形成於主體内部，套管部位於主體上且沿垂 直方向透設有第一垂直通孔。第一垂直通孔連接容置空 間，容置空間中設置有鎖定裝置。鎖定裝置包括鎖定部 與座體，鎖定部的一端具有卡合元件，鎖定部的另一端 具有鎖定元件，座體具有樞接部，樞接部配置於卡合元 件與鎖定元件之間的下方位置，鎖定部透過樞接部樞接 於座體。 [0006] 侧輪的軸心處具有側輪軸心部，側輪軸心部具有與 主體水平通孔軸向對齊的側輪水平通孔，側輪軸心部的 外環面環繞固設有外環齒部，外環齒部相應於卡合元件 1〇顏7产單編號A0101 第5頁/共24頁 1012011042-0 M433971 [0007] [0008] [0009] 。水平軸承配置為穿設於主體水平通孔與側輪水平通孔 。軸部配置為穿過第一垂直通孔，軸部具有處於相對位 置的第一端與第二端，第一端位於容置空間且具有相應 於鎖定元件的鎖定結構，第二端於套管部上方伸出。藉 此，軸部向下滑動以致鎖定結構向下抵持鎖定元件且卡 合元件向上卡嵌外環齒部，或軸部向上滑動以致鎖定結 構向上遠離鎖定元件且卡合元件向下遠離外環齒部。 本創作一較佳實施例中，所述鎖定元件的下方配置 有第一彈性元件，第一彈性元件的底端固設於主體，第 一彈性元件的頂端頂持鎖定元件。轴部的第一端套設有 第二彈性元件，第二彈性元件的頂端頂持於主體，第二 彈性元件的底端抵持於所述鎖定結構，且第二彈性元件 向下的彈力大於第一彈性元件向上的彈力。 本創作一較佳實施例中，所述鎖定結構具有尖端與 鈍端，所述鎖定元件具有相應於鎖定結構且往上凸設的 兩限位壁。所述鎖定結構的水平橫截面為水滴狀。 本創作一較佳實施例中，所述兩限位壁呈現八字型 ，兩限位壁彼此間最近距離處具有相應於所述尖端的第 一間隔而最遠距離處具有第二間隔，藉此，軸部向下滑 動以致鎖定結構向下抵持鎖定元件且卡合元件向上卡嵌 外環齒部時，使尖端位於第一間隔，鈍端位於第一間隔 與第二間隔之間，因而限位壁限制尖端連帶限制軸部的 旋轉運動。 [0010] 10120347产單编號 本創作一較佳實施例中，所述兩限位壁由位於第二 間隔的部份往位於第一間隔的部份呈現由低而高的態樣 A0101 第6頁/共24頁 1012011042-0 M433971 ，因此兩限位壁的頂面具有坡道。 [0011] 本創作一較佳實施例中，所述鎖定裝置還具有栓體 ，所述樞接部為於所述座體中水平延伸的第一樞接孔， 鎖定部往下延設有樞接板，樞接板透設有相應於第一樞 接孔的第二樞接孔，栓體配置為穿設於第一框接孔與第 二樞接扎中。 [0012] 本創作一較佳實施例中，腳輪結構還包括有垂直軸M433971 V. [0001] [0002] New Description: [New Technical Field] The present invention relates to a caster structure, and more particularly to a caster structure having a locking device. [Prior Art] Casters are commonly used for items that need to be pushed and slid, such as office chairs, furniture, carts, or hospital beds. The casters are mounted on the bottom of the plurality of legs of these items to make them easy to move. In many applications, the casters are required to have both locked and unlocked states to provide the ability to transport or move the objects they carry in an unlocked state, as well as to stabilize objects in the locked state. For example, a patient lying on a pusher with a caster is used to carry out a diagnosis, such as a tomography scan, and when the destination is reached, the patient needs to be lifted or assisted to move it to the scanning platform. It is necessary to lock the casters to stabilize the pusher to avoid accidents. [0003] Conventional caster structures include a body, side wheels on either side of the body, and a vertical bearing and shaft portion that connects the body to the associated load bearing member. The side wheels can be rotated in a vertical plane/, and the vertical bearing and the shaft portion can be rotated horizontally, so that the bearing members such as the legs, the foot of the bed or the bearing elements thereon can be advanced and retracted through the casters and rotated in a smooth and counterclockwise manner. When the caster is assembled to the load bearing member, an additional tool is typically required to secure the shaft portion and the load bearing member is then threaded through, for example, the top end of the shaft portion. If the shaft is not fixed by the tool, the shaft will be forced to rotate in the process of locking and cannot be smoothly locked. The structure for locking the rotation of the caster in the vertical plane is to fix the inner ring tooth portion around the inner ring surface of the side wheel, and the 10120347^ single number is deleted 1 page 4 / total 24 page 1012011042-0 M433971 A snap element having a corresponding inner ring tooth is provided. In the unlocked state, the engaging member is away from the inner ring tooth portion, and when locked, the engaging member is engaged with the inner ring tooth portion so that the side wheel cannot rotate. Further, the structure for locking the rotation of the caster in the horizontal plane is additionally provided with a corresponding locking means, for example, another set of teeth is provided at the bottom of the shaft portion, and another set of corresponding engaging elements are disposed inside the body. [New content] [0004] In view of the above, the purpose of the present invention is to propose a caster structure that can lock the casters without using additional tools when assembling the casters to the load-bearing members of the linkage having the interlocking locking function. On the linkage of the load bearing member, the structure for interlocking locking is simplified. In order to achieve the above object, the present invention proposes a caster structure including a main body, side wheels, a horizontal bearing and a shaft portion. The main body has a main body supporting portion, a sleeve portion and an accommodating space, and the main body supporting portion is provided with a horizontal through hole of the main body, and the main horizontal through hole extends horizontally from one side of the main body to the other side thereof, and the accommodating space is formed inside the main body. The sleeve portion is located on the main body and has a first vertical through hole penetrating in a vertical direction. The first vertical through hole is connected to the accommodating space, and a locking device is disposed in the accommodating space. The locking device includes a locking portion and a seat body, the locking portion has an engaging element at one end, the other end of the locking portion has a locking member, the seat body has a pivoting portion, and the pivoting portion is disposed at a lower position between the engaging member and the locking member The locking portion is pivotally connected to the base through the pivoting portion. [0006] The side wheel has a side wheel axial center portion at the axial center thereof, and the side wheel axial center portion has a horizontal wheel horizontal through hole axially aligned with the horizontal through hole of the main body, and an outer ring surface of the side wheel axial center portion is fixed with an outer ring tooth The outer ring tooth portion corresponds to the engaging element 1 〇颜7, the order number A0101, the fifth page, the total 24 pages, the 1012011042-0 M433971 [0007] [0008] [0009]. The horizontal bearing is configured to be disposed through the horizontal through hole of the main body and the horizontal through hole of the side wheel. The shaft portion is configured to pass through the first vertical through hole, the shaft portion has a first end and a second end in opposite positions, the first end is located in the accommodating space and has a locking structure corresponding to the locking element, and the second end is sleeved Extending above the department. Thereby, the shaft portion slides downward so that the locking structure abuts against the locking element and the engaging element engages the outer ring tooth portion upward, or the shaft portion slides upward so that the locking structure is upwardly away from the locking element and the engaging element is downwardly away from the outer ring Tooth. In a preferred embodiment of the present invention, a first elastic member is disposed under the locking member, and a bottom end of the first elastic member is fixed to the main body, and a top end of the first elastic member holds the locking member. The first end of the shaft portion is sleeved with a second elastic element, the top end of the second elastic element is supported by the main body, the bottom end of the second elastic element is abutted against the locking structure, and the elastic force of the second elastic element is greater than The upward elastic force of the first elastic member. In a preferred embodiment of the present invention, the locking structure has a pointed end and a blunt end, and the locking member has two limiting walls corresponding to the locking structure and projecting upward. The horizontal cross section of the locking structure is a drop shape. In a preferred embodiment of the present invention, the two limiting walls have a figure-eight shape, and the two limiting walls have a first interval corresponding to the tip at a closest distance from each other and a second interval at a farthest distance. When the shaft portion slides downward so that the locking structure abuts against the locking member and the engaging member engages the outer ring tooth portion upward, the tip end is located at the first interval, and the blunt end is located between the first interval and the second interval, thereby limiting The bit wall restricts the tip end to limit the rotational movement of the shaft portion. [0010] In the preferred embodiment of the present invention, the two limiting walls are represented by a portion located at the second interval to a portion located at the first interval, which is represented by a low and high aspect A0101. Page / Total 24 pages 1012011042-0 M433971, so the top surface of the two limit walls has a ramp. [0011] In a preferred embodiment of the present invention, the locking device further has a plug body, the pivoting portion is a first pivot hole extending horizontally in the seat body, and the locking portion is downwardly extended with a pivot The connecting plate has a second pivoting hole corresponding to the first pivoting hole, and the plug body is configured to pass through the first frame connecting hole and the second pivoting wire. [0012] In a preferred embodiment of the present invention, the caster structure further includes a vertical axis
承，垂直軸承透設有與第一垂直通孔軸向對齊的第二垂 直通孔，垂直軸承具有上部軸體與下部軸體，且垂直軸 承於上部軸體與下部軸體間徑向朝外凸設有抵持部。下 部軸體配置為穿進第一垂直通孔，抵持部抵持於所述套 管部的頂端，軸部配置為穿過第二垂直通孔且第二端於 垂直軸承上方伸出。 [0013] 綜上所述，本創作所提出的一種腳輪結構，其在組 裝於承載構件上時，不需使用額外的工具就能將承載構 件之連動裝置鎖接於軸部的頂端，具有省時省力的功效 。且不需要使用額外的鎖定裝置，配合承載構件之連動 裝置，就能同時鎖定水平面與垂直面的旋轉。至於腳輪 於垂直面的旋轉的鎖定，是藉由側輪軸心部的外環面的 外環齒部與卡合元件相互卡嵌，較之習知腳輪是以側輪 内環面的内環齒部來進行卡嵌，本創作體積相對較小的 外環齒部還能節省材料費，從而降低成本。 [0014] 為讓本創作之目的、特徵和優點能使該領域具有通 常知識者更易理解，下文舉一較佳實施例，並配合所附 圖式，作詳細說明如下。 10120347产單編號 A〇101 ^ 7 1 / ^ 24 I 1012011042-0 M433971 【實施方式】 [0015] 請同時參閱圖1至圖6。其中，圖1為腳輪外觀的示意 圖，而本創作所提出的腳輪結構之特徵，如圖2的爆炸圖 所示。腳輪結構包括主體100、側輪300、水平軸承400 、垂直轴承600與軸部500。其主體100具有主體支承部 110、套管部120與容置空間130，其中，容置空間130形 成於主體100内部，主體支承部110透設有主體水平通孔 111，主體水平通孔111從主體100的一側面水平延伸至 其另一侧面，套管部120位於主體100上且沿垂直方向透 設有第一垂直通孔121，第一垂直通孔121連接容置空間 130。容置空間130中設置有鎖定裝置200，鎖定裝置200 包括鎖定部210、座體220與栓體250，其中，鎖定部210 的一端具有卡合元件230，另一端具有鎖定元件240，座 體220固設於主體100且具有柩接部，樞接部是於座體 220中水平延伸的第一枢接孔221，第一樞接孔221與主 體水平通孔111平行。 [0016] 第一樞接孔221配置於卡合元件230與鎖定元件240 之間的下方位置，鎖定部210往下延設有樞接板211，枢 接板211透設有相應於第一樞接孔221的第二樞接孔212 ，栓體250配置為穿設於第一樞接孔221與第二樞接孔 212中。透過第一柩接孔221、第二樞接孔212與位於其 中的栓體250的連接關係，鎖定部210可旋轉的樞接於座 體220。因此，鎖定部210與座體220形成如同蹺蹺板的 機構，而卡合元件230與鎖定元件240則成為此種蹺蹺板 機構的兩端。 10120347^單编號 A〇101 第8頁/共24頁 1012011042-0 M433971 [0017] 側輪300的軸心處具有側輪軸心部310，側輪轴心部 310具有與主體水平通孔111軸向對齊的側輪水平通孔 311 ’側輪軸心部310的外環面環繞固設有外環齒部3 2 〇 ’外％齒部320具有複數個齒槽321。在本實施例中，側 輪300設置於主體1〇〇的兩側，在不同實施例中，亦可僅 設置單側。水平軸承400配置為穿過主體水平通孔111與 側輪水平通孔311並置於其中，其作為側輪3〇〇在垂直面 旋轉時的軸心。另外，側板700上設有卡勾7〇1，其對應 於側輪300所透設的卡槽301，藉由卡勾7〇1和卡槽301卡 合’側板7 0 0可遮蓋側輪3 0 0相對於主體1 〇 〇的外側面。 卡合元件230為與主體水平通孔111平行的長條結構 物’且其長度超過主體支承部11〇的軸向長度，因而卡合 元件230超出主體支承部110的部份則可被卡嵌於齒槽 321以鎖疋j則輪3〇〇，使其無法在垂直面旋轉。 垂直轴承600透設有與第一垂直通孔κι軸向對齊的 第二垂直通孔601且可分為上部軸體61〇與下部軸體62〇 ，並於兩者間徑向朝外Λ設有抵持部63〇 ^下部軸體620 配置為穿進第一垂直通孔121且其外壁匹配第一垂直通孔 121的内壁，抵持部630抵持於套管部12〇的頂端《上部 軸體610的頂端則會頂持承載構件（圖中未繪示）。 軸部500配置為穿過第一垂直通孔121與第二垂直通 孔601並位於此兩者共同的軸心位置，轴部500具有處於 相對位置的第—端501與第二端502。第一端501位於容 置空間130且具有相應於鎖定元件240的鎖定結構510， 第二端502朝套管部120上方延伸直到由垂直轴承600上 1012011042-0 10120347产單編號Α0101 第9 !/共24頁 M433971 方伸出。第二端502會與承載構件連接，例如第二端502 具有螺紋，而透過承載構件上相應的螺孔與螺帽，可將 軸部500與承載構件進行鎖接固定。承載構件會具有連動 裝置以同時切換承載構件上之複數腳輪的鎖定與非鎖定 狀態，例如為可往上往下扳動的開關，可連帶牽動軸部 500往上或往下滑動，此種連動裝置為本領域具通常知識 者所熟知，在此不再贅述。 [0021] 如圖3與圖6所示，當軸部500向下滑動以致鎖定結構 510會向下施力以壓下並抵持鎖定元件240，同時基於翹 翹板原理，卡合元件230會向上卡嵌外環齒部320的齒槽 3 21，此為鎖定狀態。如圖5所示，當軸部5 0 0向上滑動以 致鎖定結構510向上遠離鎖定元件240且卡合元件230向 下遠離齒槽321，則為非鎖定狀態。需注意的是，當鎖定 結構510遠離鎖定元件240時，卡合元件230之所以會往 下墜，可以是在設計上使卡合元件230的重量大於鎖定元 件240，因此根據翹翹板原理，若不施加額外向下作用力 於鎖定元件240，則卡合元件23 0會自然下墜，此為常態 非鎖定的結構。在本較佳實施例中，如圖2、圖5與圖6所 示，是藉由彈性元件來組成常態鎖定的結構。鎖定元件 240的下方配置有第一彈性元件260，第一彈性元件260 的底端固設於主體100，第一彈性元件260的頂端頂持鎖 定元件240。軸部500的第一端501套設有第二彈性元件 520，第二彈性元件520的頂端頂持於主體100，第二彈 性元件520的底端抵持於鎖定結構510，且第二彈性元件 520向下的彈力大於第一彈性元件260向上的彈力，因此 鎖定結構510會受向下的作用力影響而常態抵持鎖定元件 10120347^^^^ A0101 第10頁/共24頁 1012011042-0 M433971 [0022] • • 240，卡合元件230則常態向上卡嵌於齒槽320，此為常 態鎖定的結構，需提起軸部500以解鎖。在其他實施例中 ，亦可僅設置第一彈性元件，而拿掉第二彈性元件，則 鎖定元件受第一彈性元件向上的作用力影響而常態抬升 ，卡合元件則常態向下遠離齒槽，此為常態非鎖定的結 構，需要壓下軸部以鎖定巧輪。_在本實施例中，第一與 第二彈性元件260、520為彈簧，在其他實施例中，亦可 用具有同等功效的構件作為彈性元件。 如圖3、圖4與圖6所示，鎖定結構510與鎖定元件 240互相配合時，還可限制腳輪於水平面的旋轉。鎖定結 構510具有尖端511與鈍端512，其水平橫截面為水滴狀 。鎖定元件240具有相應於鎖定結構510且往上凸設的兩 限位壁241，俯視來看此兩限位壁241呈現八字型，其彼 此間最近距離處具有相應於尖端511的第一間隔242而最 遠距離處具有第二間隔243，並且，限位壁241分別由位 於第二間隔的部份往位於第一間隔的部份呈現由低而高 的態樣，因此限位壁241的頂面具有坡道244。當軸部 500向下滑動以致鎖定結構510向下抵持鎖定元件240， 且當尖端511位於第一間隔242之中，相對的鈍端位於第 一間隔242與第二間隔243之間時，限位壁241會限制尖 端511的轉動，連帶限制軸部500以及腳輪於水平面的旋 轉運動。因此，在限制腳輪於垂直面的旋轉運動的同時 ，也限制了水平面的旋轉運動。在不同情況中，當鎖定 結構510向下抵持鎖定元件240時，尖端511並非直接位 於第一間殼242中，舉例來說，當鈍端512抵壓在第一間 隔242的上方，但進不去第一間隔242之中，此時腳輪仍 10120347^AQ1Q1 ^ 11 I / * 24 i 1012011042-0 M433971 可在水平面旋轉，但在旋轉過程中，鈍端512會順著坡道 244下移，同時尖端511會順著坡道244爬升，最終尖端 511仍會落入第一間隔242中。因此，腳輪在水平面經過 極有限的旋轉後，最終仍然會被限制其在水平面的旋轉 運動。 [0023] 在本實施例中，藉由鎖定元件240與鎖定結構510互 相配合，將腳輪組裝到承載構件時不需使用額外的工具 來固定連動鎖定用之轴部500，就能順利鎖接。但在其他 實施例中，亦可將軸部靠近第二端的軸身設計為半圓形 柱體或類似形狀，以便使用可匹配此種形狀的工具卡嵌 固定抽部，.再進行組裝。 [0024] 雖然本創作已以較佳實施例揭露如上，然其並非用 於限定本創作，任何熟習此技藝者，在不脫離本創作之 精神和範圍内，當可作些許之更動與潤飾，因此本創作 之保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 [0025] 圖1為本創作一實施例之腳輪的示意圖。 [0026] 圖2為本創作一實施例之腳輪結構的爆炸圖。 [0027] 圖3為本創作一實施例之鎖定部與外環齒部的立體圖。 [0028] 圖4為本創作一實施例之鎖定結構與鎖定元件的立體圖。 [0029] 圖5為本創作一實施例之腳輪為非鎖定狀態的示意圖。 [0030] 圖6為本創作一實施例之腳輪為鎖定狀態的示意圖。 【主要元件符號說明】 順瞻^單编號A〇101 第12頁/共24頁 1012011042-0 M433971The vertical bearing is provided with a second vertical through hole axially aligned with the first vertical through hole, the vertical bearing has an upper shaft body and a lower shaft body, and the vertical bearing is radially outward between the upper shaft body and the lower shaft body A convex portion is convexly provided. The lower shaft is configured to penetrate into the first vertical through hole, the abutting portion abuts against the top end of the sleeve portion, the shaft portion is configured to pass through the second vertical through hole and the second end projects above the vertical bearing. [0013] In summary, the caster structure proposed by the present invention can be used to lock the linkage of the bearing member to the top end of the shaft portion without using an additional tool when assembling the bearing member. Time and effort. Moreover, it is not necessary to use an additional locking device, and the interlocking device of the bearing member can simultaneously lock the rotation of the horizontal plane and the vertical plane. As for the rotation of the caster on the vertical plane, the outer ring tooth portion of the outer ring surface of the side wheel shaft portion is engaged with the engaging element, and the conventional caster is the inner ring tooth of the inner ring inner ring surface. For the card to be inserted, the outer ring tooth portion with a relatively small volume can save material costs and reduce the cost. [0014] To make the objects, features, and advantages of the present invention more comprehensible to those of ordinary skill in the art, the following description of the preferred embodiments and the accompanying drawings are set forth below. 10120347 Production Order No. A〇101 ^ 7 1 / ^ 24 I 1012011042-0 M433971 [Embodiment] [0015] Please refer to FIG. 1 to FIG. 6 at the same time. 1 is a schematic view of the appearance of the caster, and the features of the caster structure proposed by the present invention are as shown in the exploded view of FIG. The caster structure includes a main body 100, side wheels 300, a horizontal bearing 400, a vertical bearing 600, and a shaft portion 500. The main body 100 has a main body supporting portion 110, a sleeve portion 120 and an accommodating space 130. The accommodating space 130 is formed inside the main body 100. The main body supporting portion 110 is provided with a main body horizontal through hole 111, and the main body horizontal through hole 111 is One side of the main body 100 extends horizontally to the other side thereof, and the sleeve portion 120 is located on the main body 100 and has a first vertical through hole 121 penetrating in a vertical direction. The first vertical through hole 121 is connected to the accommodating space 130. The accommodating space 130 is provided with a locking device 200. The locking device 200 includes a locking portion 210, a seat body 220 and a plug body 250. The locking portion 210 has a locking element 230 at one end and a locking element 240 at the other end. The first pivot hole 221 is parallel to the main body horizontal through hole 111. The first pivot hole 221 is parallel to the main body horizontal through hole 111. The first pivoting hole 221 is disposed at a lower position between the engaging component 230 and the locking component 240. The locking component 210 extends downwardly to the pivoting plate 211. The pivoting plate 211 is transparently disposed corresponding to the first pivot. The second pivot hole 212 of the receiving hole 221 is configured to pass through the first pivot hole 221 and the second pivot hole 212. The locking portion 210 is rotatably pivotally coupled to the housing 220 through the connection relationship between the first boring hole 221 and the second pivot hole 212 and the plug 250 located therein. Therefore, the locking portion 210 and the seat body 220 form a mechanism like a seesaw, and the engaging member 230 and the locking member 240 become both ends of the seesaw mechanism. 10120347^单编号A〇101 Page 8/24 pages 1012011042-0 M433971 [0017] The side wheel 300 has a side wheel axle portion 310 at its axial center, and the side wheel axle portion 310 has a horizontal through hole 111 shaft with the main body. To the aligned side wheel horizontal through hole 311 'the outer ring surface of the side wheel axle portion 310 is surrounded by the outer ring tooth portion 3 2 〇 'the outer portion tooth portion 320 has a plurality of slots 321 . In this embodiment, the side wheels 300 are disposed on both sides of the main body 1 ,, and in different embodiments, only one side may be provided. The horizontal bearing 400 is disposed to pass through the main body horizontal through hole 111 and the side wheel horizontal through hole 311 and is placed therein as an axis when the side wheel 3 is rotated in the vertical plane. In addition, the side plate 700 is provided with a hook 7〇1 corresponding to the card slot 301 through which the side wheel 300 is disposed, and the side plate 3 is covered by the hook 7〇1 and the card slot 301. 0 0 is relative to the outer side of the body 1 〇〇. The engaging member 230 is an elongated structure 'parallel to the main body horizontal through hole 111 and has a length exceeding the axial length of the main body supporting portion 11 , so that the portion of the engaging member 230 that extends beyond the main body supporting portion 110 can be engaged In the tooth groove 321, the wheel 〇〇 is locked, so that it cannot rotate in the vertical plane. The vertical bearing 600 is provided with a second vertical through hole 601 axially aligned with the first vertical through hole κι and can be divided into an upper shaft body 61〇 and a lower shaft body 62〇, and is radially outwardly disposed between the two. The lower portion 620 of the resisting portion 63 is configured to penetrate the first vertical through hole 121 and the outer wall thereof matches the inner wall of the first vertical through hole 121, and the abutting portion 630 abuts against the top end of the sleeve portion 12" The top end of the shaft body 610 will hold the bearing member (not shown). The shaft portion 500 is configured to pass through the first vertical through hole 121 and the second vertical through hole 601 at a common axial position, and the shaft portion 500 has a first end 501 and a second end 502 in opposite positions. The first end 501 is located in the accommodating space 130 and has a locking structure 510 corresponding to the locking element 240. The second end 502 extends above the sleeve portion 120 until the number is 1012011042-0 10120347 on the vertical bearing 600. Α0101 ninth!/ A total of 24 pages of M433971 extended. The second end 502 is coupled to the load bearing member, for example, the second end 502 is threaded, and the shaft portion 500 is locked to the load bearing member by a corresponding threaded hole and nut on the load bearing member. The carrier member may have a linkage device for simultaneously switching the locked and unlocked states of the plurality of casters on the carrier member, for example, a switch that can be pulled up and down, and the sliding shaft portion 500 can be slid upward or downward. The device is well known to those of ordinary skill in the art and will not be described herein. [0021] As shown in FIGS. 3 and 6, when the shaft portion 500 slides downward so that the locking structure 510 is biased downward to press and resist the locking member 240, and based on the seesaw principle, the engaging member 230 will The tooth groove 3 21 of the outer ring tooth portion 320 is fitted upward, which is a locked state. As shown in Fig. 5, when the shaft portion 500 is slid upward so that the locking structure 510 is moved away from the locking member 240 and the engaging member 230 is moved away from the slot 321, it is in an unlocked state. It should be noted that when the locking structure 510 is away from the locking element 240, the engaging element 230 may fall down, which may be designed such that the weight of the engaging element 230 is greater than the locking element 240, so according to the principle of the seesaw, Without applying an additional downward force to the locking element 240, the snap element 230 will naturally fall, which is a normally non-locking configuration. In the preferred embodiment, as shown in Figs. 2, 5 and 6, a normally locked structure is formed by elastic members. A first elastic member 260 is disposed under the locking member 240. The bottom end of the first elastic member 260 is fixed to the main body 100, and the top end of the first elastic member 260 bears the locking member 240. The first end 501 of the shaft portion 500 is sleeved with a second elastic member 520. The top end of the second elastic member 520 is supported by the main body 100. The bottom end of the second elastic member 520 abuts against the locking structure 510, and the second elastic member The downward elastic force of 520 is greater than the upward elastic force of the first elastic member 260, so the locking structure 510 is affected by the downward force and normally resists the locking element 10120347^^^^ A0101 Page 10 / Total 24 Page 1012011042-0 M433971 [0022] • 240, the engaging element 230 is normally clamped upward in the slot 320, which is a normally locked structure, and the shaft portion 500 needs to be lifted to unlock. In other embodiments, only the first elastic element may be disposed, and when the second elastic element is removed, the locking element is normally lifted by the upward force of the first elastic element, and the engaging element is normally away from the slot. This is a normal non-locking structure, and it is necessary to press the shaft portion to lock the skill wheel. In the present embodiment, the first and second elastic members 260, 520 are springs, and in other embodiments, members having equivalent functions may be used as the elastic members. As shown in Figures 3, 4 and 6, the locking structure 510 and the locking member 240 cooperate to limit the rotation of the caster in the horizontal plane. The locking structure 510 has a tip end 511 and a blunt end 512 having a horizontal cross section that is water drop shaped. The locking member 240 has two limiting walls 241 corresponding to the locking structure 510 and protruding upwardly. The two limiting walls 241 have a figure-eight shape in plan view, and have a first interval 242 corresponding to the tip end 511 at the closest distance from each other. And at the farthest distance, there is a second interval 243, and the limiting wall 241 is respectively represented by the portion located at the second interval to the portion located at the first interval, and thus the top of the limiting wall 241 The face has a ramp 244. When the shaft portion 500 slides downward so that the locking structure 510 abuts against the locking member 240, and when the tip end 511 is located in the first space 242, the opposite blunt end is located between the first space 242 and the second space 243, The bit wall 241 limits the rotation of the tip 511, which in conjunction with the rotational movement of the shaft portion 500 and the caster in the horizontal plane. Therefore, while restricting the rotational movement of the caster in the vertical plane, the rotational movement of the horizontal plane is also limited. In various situations, when the locking structure 510 abuts the locking element 240 downwardly, the tip 511 is not directly in the first inter-shell 242, for example, when the blunt end 512 is pressed over the first spacing 242, but Without going to the first interval 242, the caster is still 10120347^AQ1Q1 ^ 11 I / * 24 i 1012011042-0 M433971 can rotate in the horizontal plane, but during the rotation, the blunt end 512 will move down the ramp 244, At the same time, the tip 511 will climb down the ramp 244 and eventually the tip 511 will still fall into the first space 242. Therefore, after a very limited rotation of the caster, the caster will eventually be restricted from rotating in the horizontal plane. In the present embodiment, by engaging the locking member 240 and the locking structure 510, the caster can be assembled to the carrier member without using an additional tool to fix the interlocking locking shaft portion 500, and the locking can be smoothly performed. However, in other embodiments, the shaft body near the second end of the shaft portion may be designed as a semi-circular cylinder or the like to be used to clamp the fixed portion with a tool matching the shape, and then assembled. [0024] Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS [0025] FIG. 1 is a schematic view of a caster according to an embodiment of the present invention. 2 is an exploded view of a caster structure of an embodiment of the present invention. 3 is a perspective view of a locking portion and an outer ring tooth portion according to an embodiment of the invention. 4 is a perspective view of a locking structure and a locking member according to an embodiment of the invention. [0029] FIG. 5 is a schematic view showing the caster in an unlocked state according to an embodiment of the present invention. 6 is a schematic view showing a caster in a locked state according to an embodiment of the present invention. [Description of main component symbols] 顺瞻^单单号 A〇101 Page 12 of 24 1012011042-0 M433971
[0031] 100 :主體 [0032] 110 :主體支承部 [0033] 111 :主體水平通孔 [0034] 120 :套管部 [0035] 121 :第一垂直通孔 [0036] 130 :容置空間 [0037] 200 :鎖定裝置 [0038] 210 :鎖定部 [0039] 211 :樞接板 [0040] 212 :第二樞接孔 [0041] 220 :座體 [0042] 221 :第一樞接孔 [0043] 230 :卡合元件 [0044] 240 :鎖定元件 [0045] 241 :限位壁 [0046] 242 :第一間隔 [0047] 243 :第二間隔 [0048] 244 :坡道 [0049] 250 :栓體 [0050] 260 :第一彈性元件 i画47 严·J101 第13頁/共24頁 1012011042-0 M433971 [0051] 300 :側輪 [0052] 301 :卡槽 [0053] 310 :側輪軸心部 [0054] 311 :側輪水平通孔 [0055] 320 :外環齒部 [0056] 321 :齒槽 [0057] 4 0 0 :水平軸承 [0058] 500 :軸部 [0059] 501 :第一端 [0060] 502 :第二端 [0061] 510 :鎖定結構 [0062] 511 :尖端 [0063] 512 :鈍端 ( [0064] 520 :第二彈性元件 [0065] 600 :垂直軸承 [0066] 601 :第二垂直通孔 [0067] 610 :上部軸體 [0068] 620 :下部軸體 [0069] 630 :抵持部 [0070] 10120347夢早编# 700 :侧板 A0101 ^ 14 I / it 24 I 1012011042-0 M433971 [0071] 701 :卡勾[0031] 100: main body [0032] 110: main body support portion [0033] 111: main body horizontal through hole [0034] 120: sleeve portion [0035] 121: first vertical through hole [0036] 130: accommodation space [ 0037] 200 : locking device [0038] 210 : locking portion [0039] 211 : pivoting plate [0040] 212 : second pivoting hole [0041] 220 : seat body [0042] 221 : first pivoting hole [0043 ] 230 : engaging element [0044] 240 : locking element [0045] 241 : limiting wall [0046] 242 : first interval [0047] 243 : second interval [0048] 244 : ramp [0049] 250 : bolt Body [0050] 260: First elastic element i draw 47 Yan·J101 Page 13/Total 24 page 1012011042-0 M433971 [0051] 300: Side wheel [0052] 301: Card slot [0053] 310: Side wheel shaft center [0054] 311: side wheel horizontal through hole [0055] 320: outer ring tooth portion [0056] 321 : cogging [0057] 4 0 0 : horizontal bearing [0058] 500: shaft portion [0059] 501: first end [0060] 502: second end [0061] 510: locking structure [0062] 511: tip [0063] 512: blunt end [0064] 520: second elastic element [0065] 600: vertical bearing [0066] 601: Second vertical through hole [0067] 610: upper shaft [0068] 6 20: lower shaft body [0069] 630: resisting portion [0070] 10120347 dream early knitting #700: side panel A0101 ^ 14 I / it 24 I 1012011042-0 M433971 [0071] 701: hook
10120347# 單編號 A〇101 第15頁/共24頁 1012011042-010120347# Single No. A〇101 Page 15 of 24 1012011042-0