201111188 六 、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於承载機具之腳輪裴置，例如一 購物推車或輪椅，尤其是關於一種具有一避震機構之腳 裝置。 w 【先前技術】 大多數與腳輪固定之承載裝置(Vehicular dev丨ces)如電 視桌、輪椅及購物推車等常常因轉向問題而難以控制，甚 至可能傷害到使用者。 使用輪椅者尤其可以體會到由於衝擊導致腳輪損壞 之種種不便’有時甚至人行道地面之微小落差產生之極: 碰ί童也可能導致腳輪無法正常轉動。此外，路上之凹洞或 石頭可能對輪狀腳輪造歧大的危險性，導致鄰接於該 :輪固疋部之該椅體結構產生裂痕。以客製化輪椅的價格 來看，若加入人工及電漿焊接(於此係以鋁合金結構為 例）’輪椅裂痕修理費是相當可觀的。 輪椅之操控性可藉由極小的岔偏移量(她 及縮 ==來提升。不幸地，上述二種改良方法會大幅 =，椅整體結_壞錢用錢傷的可能性。極小的岔 的卿輪直徑所具有的缺點為:對於任何造成 ==上突然停止的正面衝擊，均可能導致樞轴 產生裂痕或兩者同時發生。因此，基於安 椅製造商採㈣斜句sha11—及 较大之腳輪直徑。然而，此係造成錢向上的反應不良， 201111188 以及在一大的速度範圍％# 阂内存在有輪子顫動等問題。基於上 述原因，其確貫有必要托 戈改善該習用腳輪裝置。 【發明内容】 本發明乃改良上诚址机t 、-占’提供一種腳輪萝琶，以提升 在換向上的反應性為目的。 阳在复 丌 為達到前述發明目& 一#本發明之技術内容如下： 輪輪體。該轉向軸裝土，包含1向軸及-腳 coupling means)，以倭丁狀:5 於—晃動接合器（teeterinS 機具之主架體，且发中^轉向轴可拖轉的結合於一承載 行樞轉。 Ή轉向軸能夠沿1質垂直的軸進 该腳輪輪體可轉動 ， 與該轉向軸結合。其中，、固定於一支撐結鵠，該支撐結構 一第二元件，該第一元/晃動接合态具有一第一元件及 固定於該主架體。該晃與5玄轉向軸結合，而該第二元件 垂直的轴的方向產生二晃=二益供該轉向無朝遠離該實質 方向的移動將伴隨該轉向私度。藉此，謗主架體朝任〆 如此可促達穩定之趨升;。用由。的晃動及該支撑結構的拖髮， 相較於習知技術，每 動接合器將使該轉向機具移動時，本發明之晃 移動方向改變，該腳輪裝二呈-偏移量4 和變異。 對方；该主架體旋轉用以缓 該晃動接合器較佳係具有 將該晃動財_於—财範_ 2 t=ans u ^ 本發明其中之一實施 201111188 例之晃動接合器係為—站仓⑷Λ 該第-元件為—球件窩=結器。該球窩型連結器之 第二元件’該第二元::為可樞轉的結合於該 偏移量_輪輪體之_她佳係、與該轉向軸之間具有一 該支撐結構包含—支樓 於該轉向軸。該支稽臂、ί九;亥支撐臂以機械方式結合 臂連接，gmeanS)’_震器與該支擇 向軸之震由該腳輪輪體經由鼓射傳遞至該轉 二種用於承載機具之避震腳 ，輪體。該轉向軸係可樞轉的二；Λ向軸及 (coupling m_)，以供該轉向喊合於^載雜接合器 體，其中該轉向軸能夠沿該轉 、、之主架 進行樞轉；及 μ㈣承麟具之接合點 一腳輪輪體’該腳輪輪體可轉 # 支撐結構與該轉向軸結合； 疋於支撐結構，該 射^轉的結合於 其中该支撐結構另包含一彈性 ==:r 減二== 一橫轉_合料㈣軸，賴枝臂沿著 本發明之其中一實施例揭示該彈性元件包含—阻尼 201111188 裝置(damper apparatus) ’該阻尼裝置具有一框體化㈣^)、 一内元件(inner member)及一阻尼材料(damper職如如），該 阻尼材料介於該框體及該内元件之間，並與該框體及該内 元件結合，其中至少一或其他框體及内元件能夠以實質上 同心的方式進行轉動，該内元件以一形狀或結構形態提供 该阻尼材料一有限的扭矩角度。本發明之該框體較佳具有 —圓形内表面供該阻尼材料結合。該内元件具有二或數個瓣 片（lobes)，該辦片由該内元件之中心環設凸出，以便在該 内元件相對於該框體轉動時縮小扭矩角度及剪向應力。/ 該内兀件支撐該支撐臂，該框體較佳結合於該轉向 "丨!·办們竹，例如聚梟 lP〇lyurethane,PU)。 . 本發明之祕元件包含—料，該㈣結合於 :形體二第二_體之間。該第一鍥形體位於該： 月，§玄第二鍥形體位於該轉向軸。 【實施方式】 為讓本|x明之上述及其他目的、特徵及優點 ^重，下域舉本發明之較佳實施例，她 ^ 作詳細說明如下： 竭圖或 包含所示，本發明第—實施例之腳輪裝薏 僅包侧=避震機構，且該哪置1〇另可選 提供避咖之一。該晃動機構主鸯 換向反應性，而該避震機構用於吸收衝搫 201111188 藉以降低該承載機具之主架體產生裂痕的機率，其中該主 架體係供設置該腳輪輪體主架體。總而言之，依照應用的 情況’該腳輪裂置係可選擇裝設或不裝設該避震/懸吊系 統。在具有極光滑之地板的情況下，除非在操控性上有高 度的要求’否則不需使用懸吊系統。 本發明之各實施例中，係於一承載機具之主架體12 的同一位置繪示該腳輪裝置，而該承載機具係為具有腳輪 之輪椅、購物推車或其他運輸工具。如第1圖所示，本發 明第一實施例之腳輪裝置10包含一轉向軸14可樞轉的結 5 於球窩型連結态(ball and socket type coupling) 16，以 便將该轉向軸14結合至該承載機具之主架體12。該球窩 ^•連、’。16包含一球型元件]8供該轉向軸14可樞轉的 ”於其内，以便该轉向車由14可沿一實質垂直的軸進 行樞轉。該球寫型連結器16另包含一高型元件2〇固定於 "亥主木體12。在本實施例中，該窩型元件2〇與該主架體 12係a成型。該球型几件18在該窩型元件2〇内的枢 轉動作，係容許該轉向軸14偏移該實質垂直的轴實質垂 直的軸而產生一晃動角度。 、 一腳輪輪體22可轉動的結合於—支禮結構^，且該 ^結構24組設_轉_ Η。在本實施财，該腳輪 :體22之，與該轉向細14之實質垂直的輪相互偏 夕此’當一負載施加於該腳輪裝置10，-彎折力矩 =加於該轉向轴14而導致該轉向車⑽在該 心内晃動。藉此，可使該支稽結構24產生= (mStanttrai㈣），進而確保穩定之趨升作用（Castoring aciion)。銬而 :且、聲生偏移細—此種極 及現有且βρ時的拖/下^，最後的動作仍將引起晃動 °亥轉向私 的結合於請可14摘型儿件】8為-體成型或可轉動 中’該轉‘Μ之—中。錢示之本實施例 在謗窩型元件〃 D亥球型凡件18係為一體成型，且藉由 轉向輛U之1 Μ内之該球型元们8的樞轉動作產生該 〜翅椁26，^動作。该球型元件18亦—體成型的形成 室28緊鄰於=旱％係容設於一小容室28中，且該容 5亥容室28j則地^ °型几件2〇所構成之凹孔。該短桿26與 車由14之晃/之間的空隙可決定該球型元件18及該轉向 3〇。 肖度。另’該轉向軸14具有一第—鍥形體 讀支撐％播0 向軸14，足▲ 4包含一支撐臂32可樞轉的連接於該轉 中，讀切 32亦具有—鍥職34。在本實_. (m〇n〇P〇leK 32係呈一又型，且該又型可為單一端 以供吸收由Y於該鍥形體30、34之間設有一彈性元件， 輛14之震^腳輪輪體22透過該支撐臂32傳遞至該轉向 擇為〜小刘*在’纟w示之本實施例中，該彈性元件係可選 其他具有3疑彈菁(C〇ilSPrin§)36。'然而，亦可使用任何 彈簧):彈;L震效果之彈性元件(例如—簀片或其他種類之 件/材料材_彳如橡膠或適當的高分子材料)或此類元 、、且合。當該鍥形體30、34之間因作用於該 輪體22的衝擊或其他外力而相互靠近時，該彈性元件（即 • ·Γ r? 本實施例+之彈簧3 6)可提供一漸進的阻力並減緩移動速 —9 — 201111188 度藉此5玄腳輪裝置1〇係具有一拖曳避震及懸吊系統， 尤其該腳輪裝置10較佳係具有較大的岔角（fork angle)， 以便使應力斷裂降至最低。 ^明$ “、、第2圖所示，本發明第二實施例之腳輪裝置1 〇 :近：於第一實施例所揭示者，故相似之元件係以相同的 1:號心:貫施例的第—個差異點在於該球®型連結 1 W，第二實施例之球窩型連結器16係包含一截頭式球 2元件38及—㈣元件4Q。該球型元件38可樞轉的結 :於》亥窩型元件4〇 ’且可利用近似於第一實施例之球型 讀I8的作動方式進行晃動。如第一實施例所述，該晃 動角度係由該短桿26及該容室28之間的空隙決定，其中 祕桿26係與該_元件％ —體成型。然而，在本實施 例中，错由同時接觸該窩型元件40卿成之凹孔的上表 面42該>球型疋件38之上表面亦可分擁該短桿％承受 之應力帛—個差異點在於第二實施例之該避震/懸吊系 統係採一甜制方式設置(Ie一_ a職gement) — _ 置於該轉⑽14之下方並朝向-第二鎮形體 46 ’该弟二鍥形體46位於該支揮臂％之一上 螺旋彈簧48設置於該鍥形體44及鍥形體46之間，且該 私係利用與第—實施例之彈簧彈性猶近似的 圖—所示，本發明第三實施例之腳輪裝置％ ==貫施:_機構。同理，相似之元件係 動式咖—g)，且可提供—極佳的機械優勢。= 201111188 施例之該戴頭之球型元件38係以極小化概念設計，且省 略該短桿26。因此，本實施例係完全依據該球型元件38 之上方邊緣及該窩型元件40之凹孔之上表面42之間的接 觸限制晃動角度。本實施例之腳輪裝置50的其他部位係 利用與第一及二實施例相同的方式運作。 請參照第4圖所示，本發明第四實施例利用一截頭式 之球窩型連結器54，該球窩型連結器54包含一菇狀之球 型元件56,該球型元件56係可樞轉的容設於一寓型元件 58 ’該窩型元件58與該主架體12 —體成型。相同於前一 貫施例’該球型元件56係以一體成型的方式形成於一轉 向軸59。一環狀階梯部57係形成且鄰近於該轉向軸％ 之上端部’且該環狀階梯部57保持該球型元件56位於該 窩型元件58内。為求清晰表示，該腳輪輪體及支撐結構 均未繪示於第4圖中，且該腳輪輪體及支撐結構係實質相 同於第一實施例所示之該腳輪輪體22及支撐結構％。在 本實施例中，該晃動角度係由該寓型^件58之下邊緣及 該轉向軸59之間的空隙所限制。 、 ，.J、"'''Θ叫、日月第五 實施例之腳輪裝置6Q __及後。本實_之球 窩型連結祕近似於繪示於第2圖之球寓型輕 故相似之元件細相_標號標示。_輪^^ _ 近似於前-實施例的方式可轉動騎切 係 上。然而，在本實施例中，—種 叉撐月 該腳輪輪斷賴應用於 P〇lymeriCmateriai)製成之套筒 （加 〇pec 加 土且亚固定於一框體 201111188 64 (housing)内’該框體64 —體成型的形成於該支撐臂μ 之上端。該套筒62亦蚊於—貫穿軸66，該貫穿軸66 係栓設於該轉向軸14，且該㈣62無法相對於該轉向轴 14轉動。任何施加於該腳輪輪體22之外力將使該支撐臂 32以該貫穿軸66為中心旋轉。依高分子材料之硬度及密 度(產莖），該高分子套筒62係針對該框體64相對於該轉 向車i 14之私動速度提供漸進的抵抗力及阻滞。 忒套筒62之流膠高分子材料較佳為聚氨酯 (P〇lyUrethane，PU)，其性質近似於呈固態之液體。該材料 係如一液體，其實質上為不可壓縮，且其流膠性質使其極 適合作為阻尼材料(damping material)。當一物體初撞擊接 觸該尚分子材料，該高分子材料產生如液體之回應，然而 當该物體減緩速度，該高分子材料產生如固體之回應。當 施加於該材料之負載時間愈短，該材料之回應速度愈快。 由固體至似液態之轉變非常快，且該材料也很快回復至其 初始狀態。該流膠高分子材料係展現似流體(fluid_like)特 性，其中，在一持續施加的壓力下，該材料黏度隨時間而 增加。 如第8及9圖所示，為求簡化，僅繪示一單葉叉 (monoblade fork) ’然而該避震機構亦可應用於習知雙葉叉 或其他支撐結構。明顯地，本實施例之該避震機構及繪示 於第8及9圖者也可用於連接任一其他繪示的晃動接頭， 或一習用的不晃動接頭。 請參照苐6圖所示，本發明第六實施例之腳輪裳置 7〇 ’包含一晃動機構，但不包含一避震機構。然而，如第 —12 — 201111188 6圖所示，該腳輪裝置70可依需求另包含誘避震機構。 本實施例與上述實施例不同之處在於一晃動接合哭 (teetering coupUng means)。在本實施例中， 22可轉動的結合於一支撐臂72,該支撐臂72固定二一= 向軸74。該轉向軸74沿一實質垂直的軸樞轉，以便該腳 輪輪體22沿著任：方向移動。—上半球型元件％及二下 半球型7L件78係藉由任—適當方式固定於以加 舉例來t兄’該上半球型元件76及該下半球型元 接在-起，使射架體12被失_半球型 °王 之間。該半球型元件76及78具有—貫穿之私及8 bore)，以供容置該轉向軸74。 ％孔(tapered —該支稽臂72之肩部為球體半經狀，以便與 凡件78之外表面吻合。來自該腳輪輪體 二恭： 佳經由該支撐臂72之肩部及該下半球型王== 該主架體12。貫穿該半球型元件％及 8而傳遽至 支樓臂72及該轉向轴74可呈—定程度1錐形孔使該 動，該晃_度依錐形而定。1形元^移動或晃 向軸74之上端。該凹形元件8〇具有一球攻置於該轉 球型元件76表面相配，藉以使該兩者可ί =與該上半 凹形元件80藉由一牢固的螺帽墊圈 於 74上。旋緊或旋鬆該螺帽墊圈82將改變讀：= 之移動自由度’提供實際的阻尼。相.同於前!；ι5衣置 腳輪輪體22之轉動軸與該轉向轴74之垂^貫施例’該 ，如此’當：負載施加於該腳輪裂置7〇 ϋ “ 74將產生—彎折’使該轉向軸％在該半球型二 2〇11Πΐ88 76及78之錐形孔内晃動。由此3該主架體ι2於任—方 向之移動均將伴隨有該轉動軸74之晃動及該支樓結構72 之即時拖良，以便促進穩定之趨升作用。 請閱第7圖所示，本發明第七實施例之腳輪裝置，大 部分與第六實施例相同，主要差異在於本實施例之上及下 半球型το件8 6及8 8之錐形孔的漸縮方向與第六實施例相 反三在本實施例中，該錐形孔具有一朝下漸增之直徑，反 之2 /、只軛例之錐形孔具有一朝上漸增之直徑，然而其最 終衫響(net effect)相同。相同於前一實施例，該支樓臂72 之肩部架於下方半球型元件⑽之凸形半球表面，且該轉 向轴74可於該錐形孔内自由振動或晃動，晃動程度係依 錐形端決定。該支禮臂72與該轉向轴74藉由該螺帽塾圈 及凸形元件90結合。該凸形元件9〇具有一凸形表 -、亥上半球型元件86之凹形表面相吻合。本實施例之 晃動聊輪裝置作動方式與本發明之第六實施例相同，在此 不再重新贅述。 血从明閱第8及9圖所示’本發明第八實施例之腳輪裝置 二^ 5 * 6圖相似，本實施例主要差異在於該支撐結構 匕含-支擇臂32，該支撐臂32係為—典型又型(喊) 且該腳輪輪體22設置於支撐臂32之間。 本發明揭示之數個晃動腳輪裝置實施例已詳述如上， 相較於習知之腳輪裝置具有數個優點如下： (1)本發明ϋ由晃動可確保既有且即時的拖良 ，提供一穩 定之趨升作用。 ⑻本發明提供—極佳之換向上的反應性 ，且該輪體之 —14 — 201111188 顫動大部分可被消除。 ⑽本發明之避震機财效降傾絲體之裂痕發生率 (iv)本發明結構簡單，可降低製造成本。 、2然本發明已利用上述較佳實施例揭示，然其並非用 以，定本_ ’任何熟習此技藝者在不脫離本發明之精神 it圍之内’相對上述實施例進行各種更動與修改仍屬本 J所保狀技術㈣，@此本翻之賴翻當視後附 之申請專利範圍所界定者為準。 一丨5 一 201111188 【圖式簡單說明】 第1圖：本發明第一實施例之晃動及避震腳輪裝置側 圖。 第2圖：本發明第二實施例之晃動及避震腳輪裝置側 圖。 第3圖：本發明第三實施例之晃動及避震腳輪裝置側視 圖。 第4圖：本發明第四實施例之晃動及避震腳輪裝置側視 圖。 第5a圖：本發明第五實施例之晃動及避震腳輪裝置 視圖。 . 、1 第5b圖：本發明第五實施例之晃動及避震腳輪裝置正 視圖。 第6圖：本發明第六實施例之晃動腳輪裝置側視圖。 第7圖：本發明第七實施例之晃動腳輪裝置側視圖。 第8圖：本發明第八實施例之晃動及避震腳輪裝置茂置 於購物車之示意圖。 第9圖：本發明第8圖之正視圖。 【主要元件符號說明】 〔本發明〕 10 腳輪裝置 12 ς 主架體 14 轉向軸 16 球窩型連結器 18 球型元件 20 窩型元件 一 16 一 201111188 22 腳輪輪體 24 支樓結構 26 短桿 28 容室 30 鍥形體 32 支撐臂 34 鍥形體 36 彈簧 38 球型元件 40 窩型元件 42 上表面 44 鍥形體 46 鍥形體 48 彈簧 50 腳輪裝置 54 球窩型連結器 56 球型元件 57 環狀階梯部 58 窩型元件 59 轉向轴 60 腳輪裝置 62 套筒 64 框體 66 貫穿軸 70 腳輪裝置 72 支撐臂 74 轉向軸 76 上半球型元件 78 下半球型元件 80 凹形元件 82 螺帽塾圈 86 上半球型元件 88 下半球型元件 90 凸形元件 17 —BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster device for carrying a implement, such as a shopping cart or a wheelchair, and more particularly to a foot device having a suspension mechanism. w [Prior Art] Most of the vehicles with fixed casters (Vehicular dev丨ces) such as TV tables, wheelchairs and shopping carts are often difficult to control due to steering problems and may even harm the user. In particular, wheelchair users can experience the inconvenience of damage to the casters due to impact. Sometimes, even the tiny gaps on the sidewalks are extremely extreme: Touching a child can also cause the casters to fail to rotate properly. In addition, the pits or stones on the road may pose a large risk to the wheel casters, causing cracks in the structure of the chair adjacent to the wheel-solid portion. In the case of the price of a customized wheelchair, the addition of manual and plasma welding (in this case, the aluminum alloy structure is taken as an example), the repair cost of the wheelchair crack is considerable. The handling of the wheelchair can be improved by a very small 岔 offset (she and shrink ==. Unfortunately, the above two improved methods will be greatly =, the overall knot of the chair _ bad money with the possibility of money injury. Very small 岔The shortcomings of the diameter of the Qing wheel are: for any frontal impact that causes a sudden stop on ==, it may cause cracks in the pivot or both. Therefore, based on the manufacturer's (4) oblique sentence sha11 - and The diameter of the big casters. However, this system caused a bad reaction to the money, 201111188 and there are problems such as wheel flutter in a large speed range %#. For the above reasons, it is necessary for Togo to improve the casters. [Description of the Invention] The present invention is an improvement of the above-mentioned inventions and the aim of improving the reactivity of the casters in order to improve the reactivity of the casters. The technical content of the invention is as follows: Wheel body. The steering shaft is filled with soil, including 1-axis and foot coupling means, in the shape of a shackle: 5 - swaying adapter (the main frame of the teeterinS machine, and the hair is ^ Steering shaft The towing joint is pivoted in a bearing row. The steering shaft can be rotated along the 1 vertical axis to rotate the wheel body, and is coupled with the steering shaft. The support shaft is fixed to a supporting structure. a second element, the first element/sloshing engagement state has a first component and is fixed to the main frame body. The sway is combined with the 5th steering shaft, and the direction of the vertical axis of the second component is generated by two swaying The movement of the steering away from the substantial direction will be accompanied by the steering privateness. Thereby, the main body of the rams can lead to a steady rise so as to cause a steady sway and the swaying of the support structure, Compared with the prior art, when the moving implement will move the steering implement, the moving direction of the present invention changes, and the caster is loaded with an offset of 4 and a variation. The other side; the main frame rotates to slow down Preferably, the swaying adapter has a swaying splicer that is one of the implementations of the invention. The swaying splicer is configured as a station (4) Λ the first component is a ball member. a socket = a second element of the ball and socket type connector :: is pivotally coupled to the offset _ wheel body _ her best, and the steering shaft has a support structure comprising - a branch to the steering shaft. The sea support arm is mechanically coupled to the arm, and the shock of the shock absorber and the pivot axis is transmitted by the caster wheel body to the two kinds of suspension feet for carrying the implement, the wheel body . The steering shaft is pivotable; a steering shaft and a coupling m_ are provided for the steering to be engaged with the carrier, wherein the steering shaft can pivot along the main frame of the turn; And μ (four) joints of the rivet with a caster wheel body 'the caster wheel body can be turned # the support structure is combined with the steering shaft; 疋 in the support structure, the combination of the rotation and the rotation of the support structure further comprises an elasticity == :r minus two == one traverse _ compounding (four) axis, the lamella arm according to one embodiment of the invention reveals that the elastic element comprises - damping 201111188 device (damper apparatus) 'the damping device has a frame (4) ^), an inner member and a damping material (such as damper), the damping material is interposed between the frame and the inner member, and is combined with the frame and the inner member, at least one of which Or the other frame and inner member can be rotated in a substantially concentric manner, the inner member providing the damping material with a limited torque angle in a shape or configuration. The frame of the present invention preferably has a circular inner surface for the damping material to bond. The inner member has two or more lobes that are projecting from the center of the inner member to reduce the torque angle and shear stress as the inner member rotates relative to the frame. / The inner member supports the support arm, and the frame is preferably combined with the steering "丨!······························· The secret element of the present invention comprises a material, and the (4) is bonded between: the second body of the second body. The first 锲 shape is located at: the month, and the second 锲 shape is located on the steering shaft. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be described in the following description. The caster mounting of the embodiment only has a side of the package = a shock absorbing mechanism, and the one of which is set to provide one of the avoidances. The sloshing mechanism is mainly used for reversing the reactivity, and the slamming mechanism is used for absorbing the rushing 201111188 to reduce the probability of cracking of the main frame body of the carrying device, wherein the main frame system is provided for the main frame body of the caster wheel body. In summary, depending on the application, the caster splitting system may or may not be equipped with or without the suspension/suspension system. In the case of a very smooth floor, there is no need to use a suspension system unless there is a high degree of handling requirements. In various embodiments of the present invention, the caster device is depicted at the same location of a main frame 12 of a carrying implement, and the carrying device is a wheelchair, shopping cart or other means of transport having casters. As shown in Fig. 1, a caster device 10 according to a first embodiment of the present invention includes a pivoting joint 5 of a steering shaft 14 in a ball and socket type coupling 16 to combine the steering shaft 14. To the main frame body 12 of the carrying device. The ball nest ^• even, '. 16 includes a ball-shaped member 8 for pivoting the steering shaft 14 so that the steering wheel can be pivoted by a substantially vertical axis. The ball-type connector 16 further includes a high The type element 2〇 is fixed to the "Hai main wood body 12. In the present embodiment, the socket type element 2〇 is formed with the main frame body 12a. The ball type pieces 18 are inside the socket type element 2 The pivoting action allows the steering shaft 14 to be offset from the substantially vertical axis of the substantially vertical axis to generate a sway angle. The caster wheel body 22 is rotatably coupled to the yoke structure ^, and the structure 24 In the present implementation, the caster: the body 22, the wheel substantially perpendicular to the steering thin 14 is mutually biased. When a load is applied to the caster device 10, the bending moment = plus The steering wheel 14 causes the steering wheel (10) to sway within the center. Thereby, the branch structure 24 can be generated = (mStanttrai (4)), thereby ensuring a stable lifting effect (Castoring aciion). The sound-producing offset is fine—this pole and the existing and dragging/downing of βρ, the last action will still cause the swaying The combination is in the shape of the pick-up 14] 8 is - body forming or rotatable in the 'turning' - in. This example of the money in the armpit type component 〃 D hai ball type 18 Formed integrally, and the pivoting action of the ball-shaped elements 8 in the U-turn of the U-turn is generated by the pivoting action of the ball-shaped element 8. The spherical element 18 is also formed into a chamber 28 adjacent to = The % of drought is contained in a small chamber 28, and the volume of the chamber 5j is a recessed hole formed by a plurality of pieces of 2 。. The short rod 26 and the vehicle are swayed between 14 The gap can determine the spherical element 18 and the steering 3. The second steering shaft 14 has a first-shaped body read support % broadcast 0-axis 14 and the foot ▲ 4 includes a support arm 32 pivotable. Connected to the turn, the read cut 32 also has - 锲 34. In this real _. (m〇n〇P〇leK 32 series is a re-type, and the re-type can be a single end for absorption by Y An elastic member is disposed between the squat bodies 30 and 34. The vibration of the wheel 14 of the vehicle 14 is transmitted to the steering arm 32 through the support arm 32. The embodiment is selected in the embodiment. Components are optional 3 suspected phthalocyanine (C〇ilSPrin§) 36. 'However, any spring can also be used): elastic; L-seismic elastic elements (for example - cymbals or other kinds of parts / materials _ such as rubber or appropriate The polymer material or the like, and the elastic member (ie, • Γ r? Ben) when the 锲-shaped bodies 30, 34 are close to each other due to an impact or other external force acting on the wheel body 22. The spring of the embodiment + 3 6) can provide a gradual resistance and slow down the movement speed - 9 - 201111188 degrees, whereby the 5 Xuan caster device 1 has a tow suspension and suspension system, especially the caster device 10 is better Has a large fork angle to minimize stress cracking. ^明,", Figure 2, the caster device 1 of the second embodiment of the present invention: near: in the first embodiment, the similar components are the same 1: centroid: The first difference of the example is that the ball type connector 1 W, and the ball and socket connector 16 of the second embodiment includes a truncated ball 2 component 38 and a (four) component 4Q. The spherical component 38 is pivotable. The knot of the rotation is: "Hypocket type element 4" and can be shaken by an action mode similar to the ball type read I8 of the first embodiment. As described in the first embodiment, the sway angle is determined by the short rod 26 And the gap between the chambers 28 is determined, wherein the secret rod 26 is integrally molded with the element. However, in the present embodiment, the upper surface of the recessed hole that simultaneously contacts the socket member 40 is simultaneously contacted. 42. The upper surface of the spherical element 38 can also share the stress of the short rod%. One difference is that the suspension/suspension system of the second embodiment adopts a sweet mode setting (Ie a _ a job) — _ placed below the turn (10) 14 and toward the second town shape 46 'The second body 46 is located on one of the swing arms The coil spring 48 is disposed between the 锲-shaped body 44 and the 锲-shaped body 46, and the private system utilizes a view similar to the spring elasticity of the first embodiment, and the caster device of the third embodiment of the present invention is %== Shi: _ agency. Similarly, similar components are dynamic coffee-g), and can provide - excellent mechanical advantage. = 201111188 The embodiment of the ball-shaped component 38 is designed with minimal concept, and The short rod 26 is omitted. Therefore, the present embodiment limits the sway angle in accordance with the contact between the upper edge of the spherical member 38 and the upper surface 42 of the recessed portion of the socket member 40. The caster device 50 of the present embodiment. The other parts operate in the same manner as the first and second embodiments. Referring to Fig. 4, the fourth embodiment of the present invention utilizes a truncated ball and socket type connector 54, which is a ball and socket type connector 54 comprises a mushroom-shaped spherical element 56, the spherical element 56 being pivotally received in a living element 58. The socket-shaped element 58 is integrally formed with the main frame body 12. For example, the spherical member 56 is integrally formed on a steering shaft 59. An annular step portion 57 is formed adjacent to the upper end portion of the steering shaft % and the annular step portion 57 holds the spherical member 56 in the socket member 58. For clarity, the caster wheel body and The supporting structure is not shown in FIG. 4, and the caster wheel body and the supporting structure are substantially the same as the caster wheel body 22 and the supporting structure % shown in the first embodiment. In the embodiment, the shaking angle is It is limited by the gap between the lower edge of the living unit 58 and the steering shaft 59. , , J, "''', the caster device of the fifth embodiment of the sun and the moon 6Q __ and later The ball-and-socket connection of this real_ is similar to that of the ball shown in Figure 2, which is similar to the component details. The _ wheel ^^ _ can be rotated on the riding system in a manner similar to the front-embodiment. However, in the present embodiment, the forklift is used for the sleeve made of P〇lymeriCmateriai) (the twisted pec is added and the ground is fixed in a frame 201111188 64 (housing)' The frame body 64 is integrally formed on the upper end of the support arm μ. The sleeve 62 is also mosquito-through-shaft 66, and the through-shaft 66 is bolted to the steering shaft 14, and the (four) 62 cannot be relative to the steering shaft. 14 Rotation. Any force applied to the caster wheel body 22 will cause the support arm 32 to rotate about the through shaft 66. The polymer sleeve 62 is for the hardness and density of the polymer material (the stem) The frame 64 provides progressive resistance and retardation with respect to the private speed of the steering wheel i 14. The flow polymer material of the sleeve 62 is preferably polyurethane (P〇lyUrethane, PU), and its properties are similar to a solid liquid. The material is a liquid, which is substantially incompressible, and its flow properties make it very suitable as a damping material. When an object initially hits the molecular material, the polymer material is produced. As a liquid response, however when When the body slows down, the polymer material responds as a solid. The shorter the loading time applied to the material, the faster the response speed of the material. The transition from solid to liquid is very fast, and the material also responds quickly. To its initial state, the flow-polymeric polymer material exhibits fluid-like characteristics in which the viscosity of the material increases with time under a constant applied pressure. As shown in Figures 8 and 9, for simplification Only a single blade fork is shown. 'However, the suspension mechanism can also be applied to a conventional double-leaf fork or other support structure. Obviously, the suspension mechanism of the embodiment is shown in Figs. 8 and 9. The figure can also be used to connect any other illustrated rocking joint, or a conventional non-shaking joint. Referring to Figure 6, the caster of the sixth embodiment of the present invention includes a rocking mechanism, but The suspension mechanism is not included. However, as shown in the figure 12-1211, the caster device 70 can further include a sniffer mechanism according to requirements. The difference between the embodiment and the above embodiment is that a swaying joint is crying ( Teete Ring coupUng means. In this embodiment, 22 is rotatably coupled to a support arm 72 that is fixed to the two-axis = direction shaft 74. The steering shaft 74 pivots along a substantially vertical axis for the caster The wheel body 22 is moved in any direction: the upper hemisphere type element % and the second lower hemisphere type 7L piece 78 are fixed by any suitable means to add the example to the upper hemispherical element 76 and the lower hemisphere. The elements are connected to each other such that the frame body 12 is lost between the hemispherical types. The hemispherical elements 76 and 78 have a through-hole and 8 bore for receiving the steering shaft 74. % hole (tapered) The shoulder of the arm 72 is a semi-spherical shape of the ball so as to conform to the outer surface of the member 78. From the caster wheel body: the shoulder and the lower hemisphere via the support arm 72 Type King == The main frame body 12. Through the hemispherical elements % and 8 and transferred to the branch arm 72 and the steering shaft 74 can be set to a degree 1 tapered hole to make the movement, the _ degree cone Shaped. The 1 element moves or sways toward the upper end of the shaft 74. The concave member 8〇 has a ball that is placed on the surface of the ball-type element 76 so that the two can be compared with the upper half. The female member 80 is attached to the 74 by a strong nut. Rotating or unscrewing the nut washer 82 will change the degree of freedom of reading: = providing actual damping. Phase. Same as before! The rotation axis of the caster wheel body 22 and the steering shaft 74 are slid by the embodiment 'When: the load is applied to the caster split 7 〇ϋ "74 will produce - bend" so that the steering shaft % The hemispherical type 2, 2, 11, 88, 76, and 78 are swayed in the tapered hole. Thus, the movement of the main frame body ι2 in any direction will be accompanied by the sway of the rotating shaft 74 and The structure of the branch structure 72 is immediately improved to promote the stabilization effect. As shown in FIG. 7, the caster device of the seventh embodiment of the present invention is mostly the same as the sixth embodiment, and the main difference lies in the embodiment. The tapered direction of the tapered holes of the upper and lower hemispherical shaped members 8 6 and 8 8 is opposite to that of the sixth embodiment. In the present embodiment, the tapered holes have a downwardly increasing diameter, and vice versa 2 / The tapered hole of the yoke only has an upwardly increasing diameter, but the final net effect is the same. As in the previous embodiment, the shoulder of the branch arm 72 is placed on the lower hemispherical component (10). The convex hemisphere surface, and the steering shaft 74 can freely vibrate or sway in the tapered hole, and the degree of sway is determined by the tapered end. The arm 74 and the steering shaft 74 are looped by the nut and The convex member 90 is coupled. The convex member 9 has a convex surface--the concave surface of the upper hemispherical member 86. The swaying device of the present embodiment and the sixth embodiment of the present invention The same, will not be repeated here. Blood from the 8th and 9th drawings The caster device of the eighth embodiment is similar to the figure of the second embodiment. The main difference of this embodiment is that the support structure includes a support arm 32, which is a typical type (scream) and the caster wheel The body 22 is disposed between the support arms 32. The embodiments of the plurality of rocking caster devices disclosed in the present invention have been described above in detail, and have several advantages over the conventional caster device as follows: (1) The present invention ensures that both are swayed by shaking. There is a real and immediate improvement, which provides a stable rising effect. (8) The present invention provides an excellent upward response, and most of the vibration of the wheel body can be eliminated. (10) The avoidance of the present invention The economic efficiency of the shock absorber reduces the incidence of cracks (iv) The invention has a simple structure and can reduce the manufacturing cost. 2, the present invention has been disclosed by the above-described preferred embodiments, but it is not intended to be used in the context of the present invention without departing from the spirit of the invention. It belongs to the technology of this J (4), which is subject to the definition of the patent application scope attached to it. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a rocking and suspension caster device according to a first embodiment of the present invention. Fig. 2 is a side view showing the swaying and suspension caster device of the second embodiment of the present invention. Fig. 3 is a side elevational view of the swaying and suspension caster apparatus of the third embodiment of the present invention. Fig. 4 is a side elevational view of the swaying and suspension caster apparatus of the fourth embodiment of the present invention. Fig. 5a is a view showing the swaying and suspension caster device of the fifth embodiment of the present invention. Fig. 5b is a front view of the swaying and suspension caster device of the fifth embodiment of the present invention. Figure 6 is a side view of a rocking caster device according to a sixth embodiment of the present invention. Figure 7 is a side view of a rocking caster device according to a seventh embodiment of the present invention. Fig. 8 is a schematic view showing the swaying and suspension caster device of the eighth embodiment of the present invention placed on a shopping cart. Figure 9 is a front elevational view of Figure 8 of the present invention. [Main component symbol description] [Invention] 10 Caster device 12 ς Main frame 14 Steering shaft 16 Ball-and-socket type connector 18 Ball-shaped element 20 Nest-type element-one 16 One 201111188 22 Caster wheel body 24 Branch structure 26 Short rod 28 chamber 30 锲 body 32 support arm 34 锲 body 36 spring 38 spherical element 40 socket element 42 upper surface 44 锲 shaped body 46 锲 shaped body 48 spring 50 caster device 54 ball and socket type connector 56 spherical element 57 annular step Port 58 socket element 59 steering shaft 60 caster unit 62 sleeve 64 frame 66 through shaft 70 caster unit 72 support arm 74 steering shaft 76 upper hemispherical element 78 lower hemispherical element 80 concave element 82 nut collar 86 Hemispherical element 88 Lower hemispherical element 90 Convex element 17 —