200900272 九、發明說明： 【發明所屬之技術領域】 伹:發明：關於一種腳輪衷置，尤指運用於病床儀器、推車、及 ,ί、荨’且該腳輪可自由轉向，方便運輸時轉##，腳輪 習式腳輪(50)如第七A、m圖所示係本 f斤型糊係提供—種狀向及財魏之鱗式車 在一迴轉式車輪輪架之雜郎，併舰有—縣_及 ;定向裝置_(51)，該煞車裝置„(52)及以裝置J((5i))並 位裝置之牵制’使兩者作制動及活動之控制變換，使 =5= 非嫩態時’都具有輔助定向之功能者。 (所欲解決之技術問題） 係^式腳輪(5G) ’叙向裝置開關（51)與煞車震置開關（52) ，故由於該腳輪本身寬度就很窄小，故該定向裝置開 關⑸）與煞車裝置開關⑽所設計出來的踩踏面積亦不會很大 個，關”佔—分之—輪寬’是故要用腳踩踏控制腳輪並不容易] 很容易誤踩開置，誤踩後又須扳回原位置，造成諸多不便 f式腳輪⑽），由於其嵌摯部（53)的缺口⑽）及輪齒 2)係為垂直角缺口，皆具稜角，故無法在該腳輪行進當中踩踏開 關控制腳輪’若在觸輪行進當中踩踏開關又 讓 (53)受損，甚至崩裂而使該腳輪整個報廢。 力说甘入手4 (解決問題之技術手段） .本發明人有鑑於此，乃憑恃著長期對於腳輪之研究及融會貫通 之構思’而發明出一種腳輪裝置，其包含:一本體，具一旋轉^由裝置 200900272 而使邊本體得以旋轉，又該旋轉軸裝置尚包含一_^摯部；一輪子， :亥輪子中心位置具-貫穿軸孔而樞固於本體上丨—開關裝置，包含 第…開關部’及第二開關部，其中，該第—開關部表面具—通孔只 供第=開_容置，且第―_部與第二開關部共_設於本體上 預，的轉軸上，又第一開關部尚包含第一_^摯片，第二開關部尚 ^3卡摯片’其中’該第—卡摯片與第二卡共雜設於本體另 一預定之轉軸上；藉由上述元件的組設，t按壓該第__開關部，即 觸動第卡手片敌入5亥卡摯部以達固定腳輪方位；當按壓該第二 =之^動第二卡摯片鼓人該卡摯部，且順勢壓抵輪子以達止動 w又’該卡摯部’包含一栓體，一制動盤，一制動齒碗，1中， 補動盤及制動齒碗係被固設於栓體下方預定處；又刻動盤 斜度之缺口 ’及該制動齒碗具複數個輪齒及輪齒槽， 弧角及斜度；I該本體更包含—對流線造形外殼予 匕覆者本體及該本體右下側進一步固設一護套環。 Μ壯本《@之主要目的.提供_種容易被腳按壓控制腳輪的-種開 哥哀置，並提供固定方位或止動煞車等功能。 本發明之次要目的：提供在腳輪行進當中， 定方位或止動煞車等功能而不損及絲部之-種機構此：^腳1^ 本發明之另一目的：提供一種防撞牆的腳輪，以保 全性夺發明之再-目的：提供—種流線造形的腳輪，兼^觀及安 (對照先前技術之功效） 兹由以上說明得知，本發明相較先_術，確可達到如下之功 由於係採用按 、容易讓腳足择壓控制腳輪定位及止動煞車. 200900272 ==付按壓_者設計，使按㈣腳踏面積較大，具防誤 包複2讓任輪具，環及被-流線造形的外殼所 =害讓腳i有任何棱角，故運輪使用過程中不會因為碰撞牆壁 等功即控獅峨方位或止動煞車 4 護輪子 【實施方一種防撞腾的腳輪’具緩衝作用以保 ⑽縣圖所示，本發明係—種腳輪裝置包含··一本體 輪子（0) ’及-開關控制裳置⑽）。其中， 該本體(1G)具-旋轉_置⑴）喊該本體（⑻得峨轉，又 ^疋轉軸裝置（11)尚包含—卡摯部⑽，又在其上端設一通孔 (13)，其内緣具複數個缺口彳Mu _f '、女而目對於通孔⑽之複數個缺口 (131)位置設置凸緣 ⑽’故該上蓋⑽可麵孔⑽結合而成具—容㈣供一轴承 15)置入讓栓體（121)係貫穿該軸承(15)的，以致讓腳輪可隨該栓 體(^21)的中心軸任意旋轉；又，該本體⑽右下側進—步固設一護 套裱(18) ’該護套環⑽其大部份包覆著橡膠體，當腳輪撞牆具有 緩充作用，以達最佳運輸上的安全效果； 且’該卡摯部（12) ’包含一栓體（121)，一制動盤（122)，一制 動齒碗(123) ’其中，該栓體(121)穿設數個塾圈，本體⑽，軸承 (15)等，於末下端依序固設有一倒置制動盤〇2幻及一倒置制動齒碗 (123) ’其中该制動盤（122)具一對缺口（1221)，該制動齒碗(123)的 碗緣周圍具輪齒（1231)及輪齒槽（1232); 該輪子(20) ’其中心具一貫穿軸孔(21)而樞接於本體〇〇)上； 200900272 該開關裝置⑽，包含第-開關部(31)，第 盆 =該=«部⑻上絲具-财(卿叫第二關 ; 置，且第-開關部⑻與第二開關部⑽具共 體⑽之外卿⑽上；又第—瞻 片（33)，第二開關部（32)包含第二卡摯片（34)，其 (33)與第二卡摯片⑽相疊貼合且具共同轉㈣樞冰手 内側轉轴（17)上，· 遺本體CW之 穿置^=閱第三_示，藉由該輪子⑽樞設於本體⑽，開關 卡摯片ϋ 的轉向，又該第—開關部(31)係與第一 =手片（33)連動得以嵌人觸盤⑽）者以達腳翻定方位之目 (123=第二開關部(32)係與第二卡擎片（34)連動以嵌入制動齒碗 時，第Γ達止動煞車腳輪之目的’又該第二_部（32)被按壓 押置^ (32)亦壓第—開關部⑻’產生連動效果。其開關 =。)之第一開關部⑻及第二開關部(32)之進一步作咖 (31^ΐ閱第二Α、四Α及四Β圖所示，係本發明⑷之第一開關部 (312)^1 方位動作示意圖，最主錄該第一開關部（31)具一通孔 1二卓一開關部（32)套入而共同樞設於外側轉軸（16)位置，使其 =二開關部⑻與第二開關部⑽可以依外側轉軸（16)而旋轉了 以供繁Ϊ摯片（33)係樞設於内側轉軸（17)，其外端具一對凹處（犯2) 該第—〜開關部（31)近轉軸孔(311)下方之一對凸處(3丨3)套入，另 卡摯片（33)裡端設一對肩處（334)以抵緊本體（10)的门形下 部(31目)對的_其彈性使第—開關部（31)限位；當腳踏下第一開關 處（幻夺則邊第一開關部（31)以外側轉軸（16)逆時針旋轉至其凸 ^ 3)到第二開關部（32)之限位處（322)為止；該第一卡擎片（33) 200900272 受第-開關部(31)的壓抵，同樣會以内側轉軸⑽逆時針旋轉以故 入制動盤⑽）之缺口⑽丨），除了此時腳輪就被固定方位而直行 外’並儲存動能以輔助第一開關部（31)的未來復位。 明茶閱第—A、五A及五B圖所示係腳輪之第二開關部（32)止動 之動作不思圖，最主要於該第二卿部（32)可以依外側轉軸（16) 而旋轉’又第二卡摯片（34)係樞設於内側轉軸（17)，其外端形成一 弧度亚具-對凸點，並在預定處設置一限位處(342)又在其裡端設一 對肩部(344)以抵緊本體(10)门形下方，相對的使第二開關部（32)限 位，當腳踏下第二開關部（32)時，則該第二開關部⑽以外側轉轴 06)逆時針旋轉並順便壓抵第—_部⑻至其近旋轉軸孔卿） Z央處之-凸處(323)卡摯第二卡摯片⑽之限位處⑽止，而該 第一卡摯片⑽亦受第二開關部(32)的壓抵，同樣會以内側轉袖⑽ =針旋轉以嵌人制_碗⑽)之輪齒（1231)，除了此時腳輪就被 ，動煞車而停止外，並儲存動能以辅助第一開關部⑻及第二開關 扣2)位來復位；另，該第二卡摯片⑽，其外端形成一弧度並具 一對凸‘點’當腳踏下第二開關部⑽時，該第二卡擎片⑽之外端 即壓抵輪子(20)而使腳輪整體煞車止動。 再請參閱第五B圖所示’該制動盤(122)之缺口（1221)，及該制 動齒碗(123)之輪齒（)及輪齒槽(1232)係皆具設弧角及斜度，藉 2制動盤（122)之缺σ(1221) ’及糊触碗(123)之輪齒⑽υ 及輪齒槽係皆具設弧角及斜度，無任何㈣，故第一卡擎片 (33)及第二卡料㈤的卡摯處⑽)⑽)很容易卡人缺口（聰） 及輪齒槽(1232) ’故當腳輪在行進令即可控制該腳輪定方位及煞車 ^動’又當該腳輪靜止時’若突_間受—不明且超過極限碰撞力 =因該制動盤⑽）之缺口⑽），及該制動齒碗⑽之輪齒 )及輪齒槽(1232)係皆設弧角及斜度的緣故，該第一卡摯片⑶） 200900272 及第二卡摯片（34)的卡摯處（333)(343)會跳脫缺口（1221)及輪齒槽 (1232)以恢復可動的狀態，此時，只要再繼續同時按壓第一開關部 (31)及第二開關部（32) ’即可恢復第一卡摯片（33)及第二卡摯片（34) 的卡摯狀態，故該設計能保護制動盤（122)、制動齒碗(123)、第— 卡摯片（33)及第二卡摯片（34)等卡摯元件。 請參閱第六圖所示，另於腳輪第一開關部（31)及第二開關部（32) 各设置圖文標誌(35)，以提供指示操作；又進一步設一對流線造形 外设⑽予以包覆著本體(1〇) ’但讓該輪子及該護套環外露，故無 任何稜角以兼具美觀與安全性的腳輪。… 綜上所述，本發明之「腳輪褒置」，係提供一種方便腳足踩踏控 制其固定方位及止動煞車之腳輪裝置，由於按壓關係採按鍵中有 按鍵之設計，錢按鍵可呈較大面積供腳足踩踏並防誤踩，又苴大 :份，-流線造形的外殼所包覆，安全性相對提高，於腳輪行進當 ^立即㈣腳輪固定綠或止_料功誠不損及絲部， 構成結構又切見於書刊或公開制，誠符合發明專利申請要 牛’懇請釣局明鑑’早日准予專利，至為感禱。 1明者’以上所述乃是本發明之具體實施立即賴用之技術 ti明發明之構想所作之改變’其所產生之功能作用仍未超 口。月曰及圖不所涵蓋之精神時，均應在本發明之範圍内，合予陳 【圖式簡單說明】 第一圖：係本發明較佳實施例之立體圖。 ^二A圖：係本發雜佳實施例之分解圖。 第二B圖：係發明作較佳實施例之局部分解圖 第三圖··係本發明較佳實施例之剖面圖。 第四A圖：係本發明作較佳實施例未岐方位時之示意圖 200900272 第四B圖：係本發明作較佳實施例已固定方位時之示魚圖。 第五A圖：係本發明作較佳實施例未制動煞車時之示意圖。 第五B圖：係本發明較佳實施例已制動煞車時之示意圖。 第六圖：係本發明較佳實施例關關裝置設置圖文標誌示意圖。 第七A圖：係習式腳輪分解圖。 第七B圖：係習式腳輪底視圖。 【主要元件符號說明】200900272 IX. Description of the invention: [Technical field to which the invention belongs] 伹: Invention: About a caster, especially for bed instruments, carts, and, ί, 荨' and the caster can be freely steered for convenient transportation. ##, Caster-type casters (50), as shown in the seventh A and m diagrams, are provided by the F-type paste system, which is a variety of shape and the Wei Wei scale car in a rotary wheel frame. The ship has a county _ and an orientation device _ (51), the brake device „(52) and the device J ((5i)) collocation device's control 'to make the brakes and activities of the two control transformation, so = 5 = In the non-ender state, it has the function of assisting the orientation. (The technical problem to be solved) The type of caster (5G) 'The direction device switch (51) and the brake device switch (52), so because of the caster The width of the device itself is very narrow, so the pedaling area designed by the orientation device switch (5)) and the brake device switch (10) is not very large, so the "occupation-divided-wheel width" is required to step on the control casters with the foot. It's not easy] It's easy to step on the wrong position, and it has to be pulled back to the original position after a mistake, resulting in a lot of inconvenient f-type casters (10) Because the notch (10) of the weir portion (53) and the gear teeth 2) are vertical angle notches, they are angular, so it is impossible to step on the switch to control the caster during the travel of the caster. (53) Damaged or even cracked and the caster was completely scrapped. In order to solve this problem, the present inventors have invented a caster device which incorporates a long-term concept of research and integration of casters, which includes: a body with a rotation ^ The side body is rotated by the device 200900272, and the rotating shaft device further comprises a 挚^挚; a wheel, the center position of the hai wheel is pivoted to the body through the shaft hole, and the switch device comprises a switch portion And a second switch portion, wherein the surface of the first switch portion has a through hole for only the first opening/opening, and the first portion and the second switch portion are disposed on the rotating shaft of the body. The first switch portion further includes a first 挚 挚 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , By the assembly of the above components, t presses the first __ switch portion, that is, touches the card hand piece to the 5 亥 挚 以 to reach the fixed caster orientation; when the second = ^ move the second card 鼓 film drum The person should be in the middle of the card, and press the wheel against the wheel to reach the stop w and the 'cartridge' contains a plug body, a brake disc, a brake tooth bowl, a middle, a replenishing disc and a brake tooth bowl are fixed at a predetermined position below the plug body; and a notch of the indentation disc inclination and a plurality of the brake tooth bowl The tooth and the tooth groove, the arc angle and the inclination; I the body further comprises a convection line forming shell to the cover body and a lower sheath side of the body to further fix a sheath ring. Zhuang Zhuang this "@ main purpose. Provide _ kind of easy to be pressed by the foot to control the casters - kind of open, and provide a fixed orientation or stop brakes and other functions. A secondary object of the present invention is to provide a mechanism for positioning or stopping a brake during a caster without damaging the wire. This is another object of the present invention: to provide an anti-collision wall Casters, in order to preserve the re-invention of the invention - the purpose: to provide - a streamlined casters, and the view and safety (according to the efficacy of the prior art), from the above description, the present invention is relatively better than the first The following work is achieved because it is easy to let the foot and foot select the caster to position and stop the brakes. 200900272 ==Pay press _ design, so that the (4) pedal area is larger, with anti-missing 2 The outer casing of the ring and the streamlined shape has any angularity, so that the wheel will not be controlled by the collision of the wall or the brake wheel. The anti-collision caster' has a cushioning function to protect (10) the county diagram, and the caster device of the present invention comprises a body wheel (0) 'and a switch control skirt (10)). Wherein, the body (1G) has a rotation-set (1) to call the body ((8) has to be turned, and the rotary shaft device (11) further includes a latching portion (10), and a through hole (13) is disposed at the upper end thereof, The inner edge has a plurality of notches 彳Mu_f', and the female has a flange (10) for the plurality of notches (131) of the through hole (10). Therefore, the upper cover (10) can be combined with the face (10) to form a bearing (four) for a bearing. 15) placing the plug body (121) through the bearing (15) so that the caster can rotate arbitrarily with the central axis of the plug body (^21); further, the body (10) is stepped on the lower right side of the body (10) a sheath raft (18) 'The sheath ring (10) is mostly covered with a rubber body, and when the caster hits the wall, it has a slow charging effect for the best transportation safety effect; and the 'clip portion (12) 'Includes a plug (121), a brake disc (122), a brake tooth bowl (123) 'where the plug body (121) is provided with a plurality of turns, the body (10), the bearing (15), etc. The lower end sequentially has an inverted brake disc 〇 2 illusion and an inverted brake tooth bowl (123) 'where the brake disc (122) has a pair of notches (1221), and the brake tooth bowl (123) has a wheel around the bowl edge tooth 1231) and a tooth groove (1232); the wheel (20) 'the center has a through hole (21) and is pivotally connected to the body ;); 200900272 The switch device (10) includes a first switch portion (31) , the first basin = the = "parts (8) on the silk - wealth (Qing called the second off; set, and the first - switch part (8) and the second switch part (10) have a common body (10) outside the Qing (10); and the first - prospect (33), the second switch portion (32) includes a second latching piece (34), the (33) and the second latching plate (10) are laminated and co-rotating (four) pivoting the inner hand shaft (17) Upper, · the placement of the main body CW ^ = read the third _, by the wheel (10) pivoted on the body (10), the switch card ϋ ϋ turn, and the first switch (31) and the first = When the hand piece (33) is interlocked to be embedded in the touch pad (10), the head is turned up to the direction of the foot (123=the second switch part (32) is interlocked with the second card piece (34) to be embedded in the brake tooth bowl, The purpose of the first stop brake wheel caster 'the second _ part (32) is pressed and placed ^ (32) also presses the first - switch part (8)' to produce a linkage effect. Its switch =.) the first switch part (8) And the second switch unit (32) is further served as a coffee maker (31^ΐ下第二Α, 4(4) is a schematic diagram of the azimuth operation of the first switch portion (312)^1 of the present invention (4), and the first main switch portion (31) has a through hole 1 and a switch unit (32). Inserted and pivoted together at the position of the outer rotating shaft (16), so that the two switching portions (8) and the second switching portion (10) can be rotated according to the outer rotating shaft (16) for pivoting the traditional piece (33) The inner shaft (17) has a pair of recesses at the outer end (2). The first to the switch portion (31) is inserted under one of the lower shaft holes (311) to the convex portion (3丨3), and the other is inserted. A pair of shoulders (334) are provided at the end of the piece (33) to abut the gate-shaped lower portion (31 mesh) of the body (10). Its elasticity limits the first switch portion (31); when the foot is stepped down a switch (the first switch portion (31) rotates counterclockwise from the outer rotating shaft (16) to its convex portion 3) to the limit position (322) of the second switch portion (32); the first The card slab (33) 200900272 is pressed by the first switch portion (31), and the inner shaft (10) is also rotated counterclockwise so as to enter the notch (10) of the brake disc (10)), except that the caster is fixed in position. Go straight outside and store kinetic energy A first reset switch future co-part (31). The reading of the second switch part (32) of the caster shown in the first reading of the tea-A, V, and V is not considered, and the most important is that the second part (32) can be rotated according to the outer side (16). And rotating the second card (34) is pivoted on the inner shaft (17), the outer end of which forms a radian sub-parallel, and a limit (342) is placed at the predetermined position. A pair of shoulders (344) are disposed at the inner end thereof to abut the lower portion of the body (10), and the second switch portion (32) is oppositely positioned. When the second switch portion (32) is stepped on the foot, the The second switch portion (10) rotates counterclockwise with the outer rotating shaft 06) and is pressed against the first portion (8) to the near-rotating shaft hole. The convex portion (323) of the third central locking plate (10) The limit position (10) is stopped, and the first latching piece (10) is also pressed by the second switch portion (32), and the inner sleeve (10) is also rotated by the needle to insert the teeth of the bowl (10) (1231). ), except that the caster is stopped by the brakes at this time, and the kinetic energy is stored to assist the first switch portion (8) and the second switch button 2) to reset; and the second card (10) has an outer end formed. One arc and a pair of convex 'points' When the second switch portion (10) is depressed, the outer end of the second card (10) is pressed against the wheel (20) to stop the caster as a whole. Please refer to the notch (1221) of the brake disc (122) shown in Figure 5B, and the gear teeth () and the tooth groove (1232) of the brake tooth bowl (123) have arc angles and inclinations. Degree, by the lack of 2 brake disc (122) σ (1221) ' and the contact bowl (123) teeth (10) υ and the tooth groove system have arc angle and slope, without any (four), so the first card The chip (33) and the second card (5) are located at the card (10)) (10)). It is easy to get the card gap (Cong) and the tooth groove (1232). Therefore, when the caster is on the way, the caster can be controlled and the brake is controlled ^ 'When the caster is stationary, 'if the sudden _ between - not clear and exceeds the ultimate impact force = due to the brake disc (10)) gap (10)), and the brake tooth bowl (10) teeth and gear groove (1232) Because of the arc angle and the inclination, the first card (3)) 200900272 and the second card (34) of the card (333) (343) will jump off the gap (1221) and the tooth groove (1232) to restore the movable state, at this time, as long as the first switch portion (31) and the second switch portion (32) are pressed simultaneously, the first card piece (33) and the second card piece can be restored. (34) The card state, so the design can protect Movable plate (122), the retaining teeth bowl (123), - of the card Zhi piece (33) and the second locking Zhi sheet (34) such as a card element Zhi. Referring to the sixth figure, the first switch part (31) and the second switch part (32) of the caster are respectively provided with graphic signs (35) to provide an indication operation; and a pair of streamline forming peripherals is further provided. (10) Covering the body (1〇) 'But the wheel and the sheath ring are exposed, so there are no corners for both aesthetics and safety. In summary, the "casting device" of the present invention provides a caster device that facilitates the foot and foot to control its fixed orientation and stops the brake. Because of the pressing relationship, there is a button design in the button, and the money button can be compared. Large area for foot and foot stepping and anti-mistake stepping, but also large: part, - streamlined shape of the envelope, the safety is relatively improved, when the casters travel ^ immediately (four) casters fixed green or stop _ material And the silk department, the structure is also seen in the book or public system, in line with the invention patent application to the cattle '恳 please fishing Bureau Ming Jian' early grant of patents, to pray. 1 Descrição The above is the technology that is immediately applied to the specific implementation of the present invention, and the functional effects of the invention have not been exceeded. The spirit of the present invention, which is not included in the drawings, should be within the scope of the present invention, and it is to be noted that the first embodiment is a perspective view of a preferred embodiment of the present invention. ^二A图: An exploded view of the present embodiment. 2B is a partially exploded view of a preferred embodiment of the invention. FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention. Figure 4 is a schematic view of the preferred embodiment of the present invention in the case of a preferred embodiment. 200900272 Figure 4B is a fish diagram of the preferred embodiment of the present invention in a fixed orientation. Figure 5A is a schematic view of the preferred embodiment of the present invention when the brake is not braked. Figure 5B is a schematic view of a preferred embodiment of the present invention when the brake has been braked. Figure 6 is a schematic diagram showing the setting of a graphic icon for the closing device of the preferred embodiment of the present invention. Figure 7A: Exploded view of the caster. Figure 7B: View of the bottom of the student's casters. [Main component symbol description]
(A)本發明 (11)旋轉軸裝置 (121)栓體 (1221)缺口 (1231)輪齒 (13) 通孔 (14) 上蓋 (142)凸緣 (16)外側轉轴 (18)護套環 (20)輪子 (30)開關裝置 (311)轉軸孔 (313)凸處 (321)轉軸孔 (323)凸處 (331)轉軸孔 (333)卡摯處 (34)第二卡摯片 (10)本體 (12)卡摯部 (122) 制動盤 (123) 制動齒碗 (1232)輪齒槽 (131)缺口 (141)貫穿孔 (15)軸承 (17)内側轉軸 (19)外殼 (21)軸孔 (31) 第一開關部 (312)通孔 (32) 第二開關部 (322)限位處 (33) 第一卡摯片 (332)凹處 (334)肩處 (341)轉軸孔 12 200900272 (342)限位處 (344)肩處 (343)卡摯處 (35)圖文標言志 (50)習式腳輪 (52)煞車裝置開關 (51)定向裝置開關 (53)嵌摯部 (531)缺口 (532)輪齒 13(A) The present invention (11) Rotary shaft device (121) plug body (1221) notch (1231) tooth (13) through hole (14) upper cover (142) flange (16) outer shaft (18) sheath Ring (20) wheel (30) switch device (311) shaft hole (313) convex portion (321) shaft hole (323) convex portion (331) shaft hole (333) latching portion (34) second card piece ( 10) Body (12) Clamping part (122) Brake disc (123) Brake tooth bowl (1232) Cogging groove (131) Notch (141) Through hole (15) Bearing (17) Inside shaft (19) Housing (21 ) Shaft hole (31) First switch part (312) Through hole (32) Second switch part (322) Limit position (33) First snap tab (332) Recess (334) Shoulder (341) Shaft Hole 12 200900272 (342) Limit (344) Shoulder (343) Cassette (35) Graphic Remarks (50) Practice Casters (52) Brake Equipment Switch (51) Orientation Device Switch (53) Crotch (531) notch (532) teeth 13