五、新型說明： 【新型所屬之技術領域】 本創作係有關一種棘輪起子換向裝置，特別是-種罩蓋内側設有抵 塊’抵塊可_蓋姉棘輪輯動__合棘輪關的料塊，利用卡 擎塊的退離或喷合，使起子切換扳動方向的裝置。 【先前技術】 目前的棘輪起子有如中華民國專利證書號M255766號「螺絲起子結構 改良」者，梅嫩-本物m組嫩之二容置样， 該容置孔與該嗔㈣她狀，㈣纖組—㈣，各該容 置槽具兩平行邊，於容置孔前端設-擋片槽； 一棘輪設«齒部，棘輪之環齒部可雜於容置孔内；二制齒於—側 形成可與《部㈣合之卡制齒，於制齒頂端凸塊，異於卡制齒之 一側具卡端； 彈f生體係可各套合於二制齒之卡端上，二制齒與二彈性體係容置於 二容置槽内；-上蓋係蓋合於本體外於前端設穿孔，於内部開設—凹措，' 於凹槽上凸設凸塊；，片可容置於本體之制槽内，棘輪及二制齒^ 擋片之限制而不掉出本體外； 又 X朿輪（子作動時’係將上蓋旋至某_角度（例如向右旋轉），則 邊ΡΛ抵右制齒之凸塊，使右制齒之卡制齒脫離於棘輪之環齒部，川㈣ 鐘旋動本體時即可以左制齒私棘輪而產生扳動效果 ，而逆時鐘旋動本俨 1左制回相對棘輪發生職，本體㈣此迴轉至原本之旋動位置，如& 時針'逆時針旋動本體可達成往復扳動之效。 順V. New description: [New technology field] This creation is related to a ratchet screwdriver reversing device, especially the inner side of the cover is provided with abutting block 'butting block _ cover 姊 ratchet wheel __ combined ratchet wheel off The material block is a device that uses the retreat or spray of the card block to switch the direction of the screwdriver. [Prior Art] The current ratchet screwdriver is like the Republic of China Patent No. M255766 "Improvement of Screwdriver Structure". The Menon-Nourm m group is the second one. The accommodating hole and the 嗔(4) her shape, (4) fiber Group—(4), each of the accommodating grooves has two parallel sides, and a slat groove is arranged at the front end of the accommodating hole; a ratchet wheel is provided with a tooth portion, and a ring tooth portion of the ratchet wheel can be mixed in the accommodating hole; The side forms a card-shaped tooth that can be combined with the part (four), and the tip of the tooth is formed on the side of the tooth, and the side of the card has a card end; the elastic f-system can be fitted on the card end of the two-toothed tooth, The tooth and the two elastic system are placed in the two accommodating grooves; the upper cover is provided with a perforation at the front end of the body, and a recess is formed inside, and a bump is protruded on the groove; the piece can be accommodated In the groove of the body, the ratchet and the two teeth are restricted by the body without falling out of the body; and the X wheel (when the child is actuating, the upper cover is rotated to a certain angle (for example, rotated to the right), then the side ΡΛ ΡΛ 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右 右The triggering effect is generated, and the counterclockwise rotation of the 俨1 left system returns to the relative ratchet, and the body (4) rotates to the original rotating position, such as & hour hand counterclockwise rotation of the body to achieve the reciprocating effect Shun
JOO 塊二子切換板動方向的作用係源自於上蓋之凸塊迫抵制齒之凸 產時、抵的制齒因上蓋的旋轉而被推動退離棘輪，惟該制齒在生 ’，、上的凸塊需透、外的加 因厚度薄、體浐小，枯 π社且在使用上，制齒之凸塊 而 "結構也相對較差，長久使用容易因上蓋凸塊的推抵 又貝甚至導致棘輪起子失去切換扳財向的功能。 《月人1^4種棘輪起子制齒之凸塊存有需額外加卫，生產不 便，且結構膝容易磨耗損壞的缺點，故決定著手加以改良。 【新型内容】 •摘作係提供_種棘輪起子換向裝置，以克服棘輪奸制齒之凸塊存 有而額外加工’生產不便，且結構賴，容易磨耗損壞的缺點。 火本創作係透過兩種結構態樣達成切換棘輪起子扳動方向之目的，並克 服贱制棘輪起子結構上的缺點，第—種結構紐包括—置輪座及一棘 輪桿，其中： 該置輪座係設於棘輪起子的前端，該置輪座係開設—容置孔，該容置 孔兩側係連有對稱的容置槽’該容置孔於該二容置槽間則連有—活動槽， 各該容置_係設置塊，各該卡料—側係具有單⑽料齒，曰相 對側則以一彈簧抵住容置槽壁面； 该棘輪桿係於-桿體環設有—棘錄，該桿體前端係開有—插接起子 頭的插槽，該棘齒輪係置人容置孔並以棘齒與卡料之切齒。齒合； »亥置輪座係套罩蓋，鮮蓋係開有供桿體穿出的蓋孔，該篆蓋内 側對應活動槽位置係設有-抵塊，該抵塊隨罩蓋套設置輪座而伸入該活動 槽’將罩蓋姉置輪座轉動，係以抵塊在活動糟内位移並推抵其中—卡^ M400388 塊退離棘齒輪，以另一卡擎塊與棘齒輪的喷合或跳位達到板動工件的功能。 第一種結構態樣係包括一置輪座及一棘輪桿，其中·· 該置輪座係設於棘輪起子的前端，該置輪座係開設一容置孔，該容置 孔上半部的_係連有對稱㈣―、第二容置槽，下半部的兩側則連有對 稱的第三'第四容置槽’該容置孔於第―、第二容置槽及第三、第四容置 •槽間各連有—活動槽，第―、第三容置槽及第二、第四容置槽間各具有一 分隔的触，各該容㈣⑽設置-卡料，各該卡掣塊-側係具有單向 的卡掣齒，相對側則以一彈簧抵住容置槽壁面； 該棘輪桿係於-桿體環設有—棘齒輪，該桿體前端賴有—插接起子 頭的插槽，該棘齒輪係置入容置孔並以棘齒與卡擎塊之卡擎齒唾合； 置輪座係套< 罩蓋，$罩蓋係開有供桿體穿出的蓋孔，該罩蓋内 側對應各動槽位置係各設有—抵塊，各該抵塊隨罩蓋套設置輪座而伸 入所對應之_槽’將罩蓋相對置輪鋪動，係以抵塊在活動槽内位移並 …中料的切塊退離棘齒輪，以另—對角的卡料與棘齒輪的响 合或跳位達到扳動工件的功能。 上揭第及第一結搆態樣的技術特徵係進-步包括： …"置輪座於〜置孔所在壁面的上«設-座孔，該座孔係設置一 位早疋^位早①係為_件及—料；該罩蓋_對應座孔的位 置係排列設置三定位孔’該定位單福以滚辅人其中-定位孔，並隨罩 盖相對置輪座轉動而切換至對應的另一定位礼。 X置孔L纟容置槽⑽設有-對應内輪軸合的容框，該 棘齒輪係置於容框對庳 〜 孔匕，各該卡掣塊係置於容框對應各容置槽 M400388 處，且在第二結構態樣中，分隔容置槽的擋壁亦成型於該容框，該容框與 置輪座分別以不同材質金屬製成，且容框之材質硬度係大於置輪座。 三、各該卡掣塊與各該彈簧對應的一側係凸伸一套柱，以該套柱供所 對應之彈簧套接’且該卡擎塊於卡擎齒兩側係'各形成一⑨移面及一導引 面，該滑移面係與容置槽内壁貼抵，該導引面係用以與抵塊接觸； 該罩蓋係於内壁周緣係剖有至少一凹槽，該凹槽之槽寬係等同於該三 定位孔孔輯合，該置輪座麟應凹槽的位置則設有H該擔肋係位 於凹槽内’並隨罩蓋相對置輪座轉動而抵住凹槽—側，藉此限定罩蓋的轉 動幅度。 本創作之特點在於： 以卡$塊對應罩蓋抵塊-側成型導引面的方式，取代習用制齒之 凸塊不但省下額外加工成型的麻煩，提高生產的便利性。 二、利用抵塊與卡擎塊大面積的導引面接觸，彼此均具有較高的結構 又只又推抵的作用力，有效降低磨耗，可長保棘輪起子切換板動方向功 能的正常。 二、卡f塊位於卡f齒另-側的滑移面在卡f塊退誠返回唾合棘齒 輪時’可與容置槽㈣貼合滑移，增加卡掣塊進退的順暢程度。 四以有材質硬度優勢的容框承受棘齒輪與卡輩塊在轉動或移動時的 摩擦，且可節省置輪座的材料成本。 因此’本創作誠可謂-_#具有實祕及進錄之創作，值得產業 界大力推廣，並公諸於社會大眾。 【實施方式】 本創作係有關-種棘輪起子換& 示，該等s彡閱第-圖至第四圖所 置⑺ 咖樣，蝴構謝，係包括- 置輪座1及—棘輪桿2，其巾： 該容ΐ置輪座1麟於棘輪起子的前端，該置輪座丨係開設-容置孔10， rai _&置—卡輩塊13，各該卡掣塊13 則係具有單向的卡掣齒13丨 相對_以一弹汽14抵住容置槽u壁面， 各斜與各該彈簧U對應的—_伸—套柱132，以該套 供所對應之彈簧14套接； 該棘輪桿2係於一桿體20環設有一棘齒輪2卜該桿體20前端係開有 -插接起子頭的插槽22，該棘齒輪Μ係置入容置錢並以棘齒叫 f塊13之卡掣齒13丨嚙合； 。 0玄置輪座1係套設一罩芸q4宏全〇 /么03 士 / 風3 4罩盍3係開有供桿體2〇穿出的蓋孔加， «蛊3内側對應活動槽12位置係設有一抵塊3ι，該抵塊^隨罩蓋3套 6又置輪座1而伸人該活_ 12，而該卡fi塊13於卡f齒131兩側係各形成 -滑移面133及-導引面134 ’該滑移面133係與容置槽丨丨内壁貼抵，該 導引面134係用以與抵塊31接觸； 又’該置輪座1於容置孔10所在壁面的上方開設-座孔15，該座孔 15 W置-疋位早几16，該定位單元16係為一彈性件⑹及—滾珠脱， 該罩蓋3 _職射U5的位㈣制設置三定位孔32，該定位單元16 係以滾珠162嵌入其中-定位孔32，並隨罩蓋3相對置輪座i轉動而切換 至對應的另一定位孔32，在未切換棘輪起子扳動方向時，該淚珠脱係如 第四圖位於居中的定位孔32，該罩蓋3係於内壁周緣係剖有至少一凹槽 33 ’該凹槽33之槽寬係等同於該三定位孔32孔距總合，該置輪座！於對 應咖的位置則設有-細7 ’該細7係位於凹槽33内，並隨罩蓋 3相對置輪座i轉動而抵住凹槽33 _側，藉此限定罩蓋3的轉動幅度，在 未切換棘輪起子扳動方向時，該擔肋17係位於凹槽泊中間。 /本創作物換棘輪起子扳動方向時，雜罩蓋3相對置輪座1轉動， 崎塊31在湖12⑽觸減巾—地13獨編，便 二二Hi 13 21㈣合或跳位達到扳動辑的功能，請配 二:=六_示，當罩蓋3相對置輪座1逆時針旋轉(如第五圖 外側4抵塊31抵住置輪座1右側容咖的询13的導引面134 糟此推迫其退離棘齒輪21，則該定位單元16之 蓋3内側左側的定位孔32，妙… 係如弟/、圖肷入罩 過正常轉㈣ 7⑽於_ 33左舰罩蓋3超 吊的轉動中田度，而該置輪座1係以左側容料n认上 齒輪2丨，侧起㈣丨1的恤1梅棘 於反向轉動時因左側容置槽u的卡擎塊 如紅圖内側箭頭），並 續請配合參心_示=5=復位。 本結構態狀轉及元件結合_與[纟。漏樣之例圖， 述，以下僅就相異處加以說明： -冓讀相同者，該此不再贅 該置輪座1係開設1置孔W該 " 的第一、第二容置样11A 11B “ 上半部的兩侧係連有對稱 置㈣、•雜置孔半㈣兩惻則連有對稱的第三、第四容 弟—容置槽U.:\、UB及第三、第四 M400388 利之申請要件的規定’乃依法提起專利申請，並敬’ 給予肯定。 【圖式簡單說明】 第一圖係為本創作棘輪起子換向裝置第一結構態樣之立 第二圖係為第-結構態樣組合完錢之局部結構剖面圖 第二圖係為第-結構態樣之置輪座、棘輪桿、罩蓋之正^ 主 不思、圖。The action of the JOO block two sub-switching plate is caused by the protrusion of the upper cover pressing against the convexity of the tooth, and the tooth is pushed away from the ratchet due to the rotation of the upper cover, but the tooth is on the ', The bumps need to be transparent, the outer additive thickness is thin, the body is small, and the π is in use, the teeth are convex and the structure is relatively poor, and the long-term use is easy to be pushed by the upper cover bumps. It even causes the ratchet driver to lose the function of switching the trigger. "The lunar man's 1^4 kinds of ratchet screwdrivers have the need for additional reinforcement, which is inconvenient to produce, and the structural knee is easy to wear and damage. Therefore, it is decided to proceed with improvement. [New content] • The picking system provides _ kind of ratchet screwdriver reversing device to overcome the disadvantages of the bumps and the extra-processing of the bumps of the ratcheting teeth, which are inconvenient to produce, and the structure is easy to wear and damage. The Fire Creation Department achieves the purpose of switching the direction of the ratchet screwdriver through two structural aspects, and overcomes the shortcomings of the structure of the ratchet screwdriver. The first type of structure includes a wheel base and a ratchet lever, wherein: The wheel base is disposed at a front end of the ratchet driver. The wheel base is provided with a receiving hole, and the receiving hole is connected with a symmetrical receiving groove on both sides. The receiving hole is connected between the two receiving slots. - an active slot, each of which accommodates a set of blocks, each of which has a single (10) material tooth on the side, and a spring against the wall surface of the receiving groove on the opposite side; the ratchet rod is attached to the rod body There is a spine, the front end of the rod is opened with a slot for inserting the screwdriver head, and the ratchet gear is placed to accommodate the hole and the teeth of the ratchet and the chuck. The toothed cover is provided with a cover hole for the cover of the sea, and a cover hole for the rod body to be opened, and the inner side of the cover corresponding to the movable slot is provided with a -but block, which is set with the cover cover The wheel seat extends into the movable slot' to rotate the cover and the wheel base, and the block is displaced in the movable mess and pushed into it - the card M400388 is retracted from the ratchet gear, and the other card block and the ratchet gear are The spray or jump position reaches the function of the plated workpiece. The first structural aspect includes a wheel base and a ratchet bar, wherein the wheel base is disposed at a front end of the ratchet driver, and the wheel base defines a receiving hole, and the upper half of the receiving hole The _ series has a symmetry (four) ―, a second accommodating groove, and a symmetrical third 'fourth accommodating groove' is connected to both sides of the lower half, the accommodating hole is in the first and second accommodating grooves and the Third, the fourth accommodating and the slot are connected with each other - the movable slot, the first and third accommodating slots and the second and fourth accommodating slots each have a separate contact, and each of the contents (4) (10) is set - the card material, Each of the latching blocks has a unidirectional latching tooth on the opposite side, and a spring is pressed against the wall surface of the receiving slot by the opposite side; the ratcheting rod is provided with a ratchet gear in the rod body ring, and the front end of the rod body is - insert the slot of the screwdriver head, the ratchet gear is placed in the receiving hole and is splined with the ratchet of the card block; the wheel seat cover < cover, the cover is open for a cover hole through which the rod body passes, and the inner side of the cover corresponding to each movement groove is respectively provided with a damper block, and each of the damper blocks is provided with a wheel seat and a corresponding y groove is inserted to face the cover Wheel sweeping Block activity against displacement slot ... and the cut material back away from the ratchet gear, in another - Tab ring or bonded diagonal card stock with the ratchet gear to achieve functional pulled workpiece. The technical features of the first and first structural aspects include: ..." the wheel seat is located on the wall of the wall where the hole is located, and the seat hole is set to an early position. 1 is the _ piece and the material; the cover _ corresponds to the position of the seat hole is arranged in three positioning holes 'the positioning of the single Fu to support the person - the positioning hole, and the cover is rotated relative to the wheel seat to switch to Corresponding another positioning ceremony. The X-shaped hole L 纟 槽 ( ( ( 10 10 10 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 Wherein, in the second structural aspect, the retaining wall separating the accommodating grooves is also formed in the frame, the frame and the wheel base are respectively made of different materials of metal, and the material hardness of the frame is greater than the wheel seat. 3. The side corresponding to each spring of the card block protrudes from a set of columns, and the set of columns is provided with the corresponding spring sleeves, and the card block is formed on the sides of the card teeth to form a 9 a sliding surface and a guiding surface, the sliding surface is in contact with the inner wall of the receiving groove, the guiding surface is for contacting the abutting block; the cover is attached to the inner wall of the inner wall with at least one groove, the concave The groove width of the groove is equivalent to the combination of the three positioning holes, and the position of the groove of the wheel seat is provided with H. The rib is located in the groove and is rotated by the opposite wheel seat of the cover. The groove-side, thereby defining the extent of rotation of the cover. The characteristics of this creation are as follows: The replacement of the block-side molding guide surface by the cover of the card is not only the trouble of the additional processing and molding, but also the convenience of production. Second, the use of the block and the card block block large area of the contact surface contact, each has a higher structure and only push the force, effectively reduce the wear, can ensure the normal function of the ratchet screwdriver switch board direction. Second, the card f block is located on the other side of the card f tooth slip surface when the card f block retreats back to the spit ratchet wheel 'can be combined with the receiving slot (four) slip, increasing the smoothness of the card block forward and backward. Fourth, the frame with the material hardness advantage can withstand the friction of the ratchet gear and the block block during rotation or movement, and the material cost of the wheel base can be saved. Therefore, 'this creation can be described as -_# has the secret of the secret and the creation of the record, it is worthy of promotion by the industry, and is publicized to the public. [Embodiment] This creation is related to the ratchet screwdriver and the display of the ratchets. The swatches are shown in the figure-to-fourth (7) coffee, and the structure includes: - the wheel seat 1 and the ratchet rod 2, the towel: the ΐ ΐ 轮 轮 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 麟 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘 棘The unidirectional chucking teeth 13 丨 are opposed to each other by a bomb 14 against the wall surface of the accommodating groove u, and each of the yokes corresponding to the spring U is extended to the sleeve 132, and the corresponding spring 14 is provided. The ratchet rod 2 is connected to a rod body 20 with a ratchet gear 2; the front end of the rod body 20 is fastened with a slot 22 for inserting a screwdriver head, and the ratchet gear is placed to accommodate money and The ratchet is called the engagement of the latching teeth 13 of the f-block 13; 0 Xuan set wheel base 1 series set a cover 芸 q4 macro full 〇 / 么 03 士 / wind 3 4 盍 盍 3 series open for the rod body 2 〇 out of the cover hole plus, « 蛊 3 inside corresponding to the active slot 12 The position is provided with a resisting block 3, which is extended with the cover 3 and the wheel base 1 to extend the living -12, and the card fi 13 is formed on both sides of the card f tooth 131. The surface 133 and the guiding surface 134 'the sliding surface 133 are in contact with the inner wall of the receiving groove, the guiding surface 134 is for contacting the abutting block 31; and the 'mounting wheel base 1 is for receiving the hole 10 is located above the wall surface - a hole 15 is provided, the hole 15 W is placed - the position is a few 16, the positioning unit 16 is an elastic member (6) and - the ball is removed, the cover 3 _ the position of the U5 (4) Three positioning holes 32 are formed, and the positioning unit 16 is inserted into the positioning hole 32 by the ball 162, and is switched to the corresponding other positioning hole 32 as the cover 3 rotates relative to the wheel base i, and the ratchet driver is not switched. In the moving direction, the teardrop is disengaged as in the fourth figure in the centering positioning hole 32, and the cover 3 is formed on the inner wall of the inner wall with at least one groove 33'. The groove width of the groove 33 is equivalent to the three positioning holes. 32 hole total, the wheel ! At the position of the corresponding coffee, there is a thin 7' which is located in the recess 33 and rotates against the recess 33 side with the cover 3 opposite the wheel base i, thereby defining the rotation of the cover 3 The amplitude is such that the rib 17 is located in the middle of the groove when the direction of the ratchet driver is not switched. / When the original object is turned by the ratchet screwdriver, the miscellaneous cover 3 is rotated relative to the wheel base 1, and the block 31 is touched by the towel 12 in the lake 12 (10), and the second piece is Hi 13 21 (four) or jumped to the plate. The function of the series, please match two: = six _, when the cover 3 is opposite to the wheel base 1 counterclockwise rotation (such as the fifth picture on the outside of the fourth figure to the block 31 against the right side of the wheel holder 1 The guide surface 134 pushes it away from the ratchet gear 21, and the positioning hole 32 on the inner side of the cover 3 of the positioning unit 16 is wonderful. The cover 3 is super-suspended in the middle of rotation, and the wheel base 1 recognizes the gear 2丨 with the left side material n, and the side (4) 丨1 shirt 1 is inserted in the reverse direction due to the left side receiving groove u The card block is like the arrow on the inside of the red figure, and continue to match the reference _ shows = 5 = reset. This structural state transitions to the combination of components _ and [纟. The example of the missing sample is described below. The following is only a description of the difference: - reading the same person, this is no longer the first and second accommodation of the wheel housing 1 Sample 11A 11B "The upper part of the upper part is connected with a symmetrical arrangement (4), the miscellaneous hole half (four) two 恻 is connected with a symmetrical third and fourth Rongdi - accommodating groove U.:\, UB and third The provisions of the fourth M400388 application requirements are 'patent application according to law, and respected'. Affirmation of the drawing. The first picture is the second figure of the first structural aspect of the ratchet screwdriver reversing device. The second part of the cross-sectional view of the first structural form is the first structural view of the wheel structure, the ratchet rod, and the cover.
鈞局早日審查，並 體分解圖 第四圖係為第-結構態樣對定位孔'凹槽、座孔及定位 — < Μ面示意圖。 不意圖。 第五圖及第六圖係為第—結構態樣切換扳動方向時各⑽結合關係之巧面 第七圖係為本創作第二結構態樣之置輪座、棘輪桿、罩蓋之正剖面示意圖。 第八圖及第九ffi]係為第二結構態樣切換扳動方向時各元件結合關係之剖面 示意圖。 第十圖及第十二結構態樣於容置孔與容置槽内設置容框 之結構剖面示意圖。 【主要元件符號說明】 置輪座1 容置孔10 容置槽11 第一容置槽11A 第二容置槽11B 第三容置槽UC 第四容置槽11D 活動槽12 卡掣塊13 卡掣齒131 套柱132 滑移面133 導引面134 彈簧14 座孔15 定位單元16 彈性件161 滾珠162 擋肋17 擋壁18 容枢19 M400388The 钧 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 早 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四Not intended. The fifth and sixth figures are the first phase of the (10) combination relationship when the first structural mode is switched. The seventh figure is the second structural aspect of the wheel seat, the ratchet lever and the cover. Schematic diagram of the section. The eighth figure and the ninth ffi are schematic cross-sectional views showing the bonding relationship of the components when the second structural aspect is switched. The tenth and twelfth structural aspects are schematic cross-sectional views of the structure in which the receiving frame is disposed in the receiving hole and the receiving groove. [Description of main components] Locating wheel housing 1 accommodating hole 10 accommodating groove 11 first accommodating groove 11A second accommodating groove 11B third accommodating groove UC fourth accommodating groove 11D movable groove 12 card 掣 block 13 card Dental caries 131 Sets 132 Sliding surface 133 Guide surface 134 Spring 14 Seat hole 15 Positioning unit 16 Elastic member 161 Ball 162 Retaining rib 17 Retaining wall 18 Shaft 19 M400388
棘輪桿2 桿體20 棘齒輪21 棘齒211 插槽22 罩蓋3 蓋孔30 抵塊31 定位孔32 凹槽33 12Ratchet lever 2 Rod 20 Ratchet gear 21 Ratchet 211 Slot 22 Cover 3 Cover hole 30 Abutment block 31 Positioning hole 32 Groove 33 12