200927401 九、發明說明： 【發明所屬之技術領域】 本發明係有關一種手動釘鎗，尤1 動針餘。 θ〜種省力型手 © 〇 睛苓照我國專利公告編號第57629〇號 結構」，係為一種習知之打釘搶1〇，此種於丁搶之改良 ，30具有—擊料31、二彈性件32盘―二1〇之作動 作動機構30之按麗柄33藉由一轴桿 _ 33 ’該 :固===以該軸桿34為支點， 力按壓長尾端332之距_為施 當該至該料勾35之距離即為抗力臂， 釘針，因此· 1、按壓柄33越往，因需施力於 種費力力量，此種嫩1G確實為— 冀_由—本S明人乃致力研發出一種省力型手動釘餘，希 加善，:改變位置的支點，而使擊釘時，施力臂可自動 ’而得到—省力的釘鎗結構。 【發明内容】 於，習^月省力型手動釘餘』所欲解決之技術問題係在 長度固^打封餘之作動機構其支點係固定，而使得施力臂 ’擊針時’需克服釘針穿透欲固定物之力量，使 200927401 得需施以較大力量，才可騎針㈣，不僅較胃力 二T:二此人乃針對種種問題，致力研發 食出一種可確實省力之手動釘鎗。 的 本發明之省力型手動⑽係設計有—可移動之支點， 時’施力臂絲越長，抗力臂越來触，而令操作 者按壓_齡時可越來越省力。使操作者可以較省力 方式操作該崎，同時可大幅提昇;η作效率。 ❹200927401 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a manual nail gun, in particular a moving needle. θ~ kinds of labor-saving hands © 苓 苓 我国 我国 我国 我国 我国 我国 我国 我国 我国 我国 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 576 Piece 32-two-inch action mechanism 30 according to the handle 33 by a shaft _ 33 'This: solid === with the shaft 34 as a fulcrum, the force presses the long end 332 distance _ for the Shidang The distance to the material hook 35 is the resistance arm, the staple, therefore, 1. The more the pressing handle 33 is, the more force is required to apply the force, and the tender 1G is indeed - 冀 _ by - this S It is committed to the development of a labor-saving manual nail residue, Xi Jiashan,: change the fulcrum of the position, and when the nail is hit, the force-applying arm can automatically get the labor-saving nail gun structure. [Summary of the Invention] The technical problem to be solved by the method of labor-saving manual nailing is that the fulcrum is fixed in the action mechanism of the length-fixing seal, and the force-arm is required to overcome the nail when the needle is shot. The needle penetrates the force of the fixture, so that 200927401 needs to exert a large force before riding the needle (four), not only the stomach force two T: two people are dedicated to the development of a practical and labor-saving manual Nail gun. The labor-saving manual (10) of the present invention is designed to have a movable fulcrum, and the longer the arm is applied, the more the anti-arm is touched, and the operator can be more and more labor-saving when pressed. This allows the operator to operate the strait in a labor-saving manner, while at the same time greatly improving; η is efficient. ❹
【實施方式】 有關本發明所採用之技術、手段及其功效，兹舉一較 佳=施例並配合圖式詳述如後，此僅供朗之用，在專利 申請上並不受此種結構之限制。 ^ 展圖一與圖二，為本發明省力型手動釘餘之立體外 觀圖與立體分顧。本發明之省力型手騎祕包含有一 體10與省力裝置20。該本體1〇包括兩側殼體11與 —月ί)设體12 ’其中前殼體12包覆著兩側殼體u。兩側殼 體11身部形成一握持部U1供操作者手部握持。握持部 U1下方装設有一釘匣13,握持部1U上方設有一彈片 14彈片14包括弟一端141與第二端142，彈片μ第二 端142被限制於侧殼體n，彈片14第一端l4i恰可貼設 一緩衝塊15,同時兩側殼體U壁面分別形成一容孔112， 匕可谷置緩衝塊15。兩侧殼體Π上端分別形成一導槽 113,導槽113與侧殼體u頂壁面之間固設有一抵頂件 16，抵頂件16鄰近導槽113形成一抵頂部161，其中抵頂 200927401 部161成數齒狀，且齒的排列方式至直線狀。 前殼體12近似U字型，形成兩側璧丨21與一底壁122, ' 兩側壁121適處分別設有一軌道123 ’同時軌道123對應 於側殼體11之導槽113。底壁122經由沖壓成形時，在底 • 壁122内部形成一容室124(圖中未見，睛參照圖三），值 ‘ 得一提的是侧殼體11的執道123也是以沖壓直接成形。前 殼體12的底壁122與兩側殼體11之間容設有一擊釘片 17，擊钉片I?設有一第一連接孔171與一第二連接孔 〇 172 ’第一連接孔ι71套置於省力裝置20而被省力裝置2〇 所帶動’第二連接孔172套置於彈片14第一端141帶動彈 片14。 省力裝置20包括一按壓件21、一活動件22、二樞接 塊23與一彈性件24。兩侧殼體π包覆著按壓件21，按壓 件21裝設於彈片14與抵頂件16之間，按壓件21設有兩 侧壁211與一按壓部212，兩侧壁211之間形成一空間 213，側壁211設有第一樞孔214與第二樞孔215，同時側 ❹ 壁211的上緣對應第一樞孔214處設有一掣動部21Θ，上 緣對應於第一樞孔215處設有一擔部217。其中掣動部216 成數齒狀，且齒的排列方式呈弧狀。 按壓件21的空間213提供活動件22容置，活動件22 身部形成一活動槽221，活動件22 —端突設有一連動部 222，連動部222穿伸於擊釘片17之第二連接孔ί72，鄭 近連動部222設有一凸部223’凸部223凸伸於彈性件24, 並將彈性件24限制於活動件22與抵頂件16之間。活動件 200927401 22活動槽221内設有一連接件224與一限制部225分別穿 伸於兩樞孔214、215。 Ο Ο 樞接塊23之一面形成一擋壁231，且樞接塊23設有 一穿孔232。樞接塊23可橫向移動的容置於側殼體丨丨之 導槽113 ’同時利用擋壁231將樞接塊23限制於導槽113 不落入兩侧殼體11之間，而前殼體12之執道123限制樞 接塊23不脫出。活動件22的連接件224兩端分別穿伸於 兩樞接塊23之穿孔232，活動件22的限制部225兩端穿 伸於按壓件21後抵觸於兩側殼體Π之壁面。前殼體12 套置兩侧殼體11時，執道123對應於導槽113，同時軌道 123限制樞接塊23擋壁231移動的範圍。 兩侧殼體11包覆省力裝置20，同時前殼體12套置兩 側殼體11，利用數固定件18將兩侧殼體u結合不脫離， 以及數固定件18將前殼體12與兩側殼體u結合不脫離。 立參照圖三與圖四，為本發明省力型手動釘鎗之剖面示 忍圖，表省力裝置20於第一位置之示意圖。本發明之釘鎗 未作動時，省力裝置20因彈性件24之彈性釋放壓抵於活 動件22之凸部223 ’連動按壓件21之按壓部212向上魏 起0 活動件22並因為連接件224與限制部225呈一高一來 而使活動件22往擊釘片17的方向下移。此時，樞^ :[Embodiment] The technology, the means and the efficacy thereof used in the present invention are as follows: a preferred embodiment and a detailed description of the drawings are as follows, which is for the purpose of Lang, and is not subject to such a patent application. Structural limitations. ^ Figure 1 and Figure 2 show the three-dimensional appearance and three-dimensional separation of the labor-saving manual nail. The labor-saving hand-carrying secret of the present invention comprises a body 10 and a labor-saving device 20. The body 1 includes two side housings 11 and a housing 12', wherein the front housing 12 encloses the side housings u. A grip portion U1 is formed on the sides of the casings 11 on both sides for the operator to hold. A magazine 13 is disposed under the grip portion U1. A resilient piece 14 is disposed above the grip portion 1U. The elastic piece 14 includes a second end 141 and a second end 142. The second end 142 of the elastic piece is restricted to the side housing n, and the elastic piece 14 A buffer block 15 can be attached to one end l4i, and a hole 112 is formed in each of the wall surfaces of the two housings U, and the buffer block 15 is disposed. A guiding groove 113 is formed on the upper end of the two sides of the casing, and an abutting member 16 is fixed between the guiding groove 113 and the top wall surface of the side casing. The abutting member 16 forms an abutting portion 161 adjacent to the guiding groove 113. 200927401 The part 161 is in the shape of a tooth, and the arrangement of the teeth is linear. The front housing 12 is approximately U-shaped, forming a side sill 21 and a bottom wall 122. The two side walls 121 are respectively provided with a rail 123 ′ while the rail 123 corresponds to the guide groove 113 of the side housing 11. When the bottom wall 122 is formed by press forming, a chamber 124 is formed inside the bottom wall 122 (not shown in the drawing, and the eye is referred to FIG. 3). The value of the side shell 11 is also directly stamped. Forming. A nailing piece 17 is disposed between the bottom wall 122 of the front casing 12 and the two side casings 11. The nailing piece I is provided with a first connecting hole 171 and a second connecting hole 172 'the first connecting hole ι 71 The second connecting hole 172 is placed on the first end 141 of the elastic piece 14 to drive the elastic piece 14 by being placed on the labor-saving device 20 and driven by the labor-saving device 2〇. The labor-saving device 20 includes a pressing member 21, a movable member 22, two pivoting blocks 23 and an elastic member 24. The two sides of the side wall 211 are disposed between the elastic piece 14 and the abutting member 16, and the pressing member 21 is provided with two side walls 211 and a pressing portion 212, and the two side walls 211 are formed. a space 213, the side wall 211 is provided with a first pivot hole 214 and a second pivot hole 215, and the upper edge of the side wall 211 is provided with a cocking portion 21 corresponding to the first pivot hole 214, and the upper edge corresponds to the first pivot hole. There is a 217 portion at 215. The urging portion 216 has a plurality of teeth shape, and the teeth are arranged in an arc shape. The space 213 of the pressing member 21 is provided for the movable member 22. The movable member 22 defines a movable slot 221, and the movable member 22 has a connecting portion 222 protruding therefrom, and the linking portion 222 extends through the second connecting portion of the nailing piece 17. The aperture 223 is provided with a convex portion 223' convex portion 223 protruding from the elastic member 24, and the elastic member 24 is restricted between the movable member 22 and the abutting member 16. The movable member 200927401 22 is provided with a connecting member 224 and a restricting portion 225 respectively extending through the two pivot holes 214 and 215. A blocking wall 231 is formed on one side of the pivoting block 23, and the pivoting block 23 is provided with a through hole 232. The pivoting block 23 is laterally movable and received in the guide groove 113' of the side casing 同时 while the retaining wall 231 restricts the pivoting block 23 to the guide groove 113 without falling between the side casings 11, and the front shell The obstruction 123 of the body 12 limits the pivoting block 23 from coming out. The two ends of the connecting member 224 of the movable member 22 respectively extend through the through holes 232 of the two pivoting blocks 23. The two ends of the restricting portion 225 of the movable member 22 extend through the pressing member 21 and abut against the wall surfaces of the two side casings. When the front casing 12 is placed on the side casings 11, the lane 123 corresponds to the guide groove 113, and the rail 123 limits the range in which the retaining wall 23 of the pivoting block 23 moves. The two sides of the housing 11 are covered with the labor-saving device 20, and the front housing 12 is sleeved with the two side housings 11, and the two side housings u are combined without being separated by a plurality of fixing members 18, and the plurality of fixing members 18 and the front housing 12 are The two sides of the housing u do not detach. Referring to Figure 3 and Figure 4, there is shown a cross-sectional view of the labor-saving manual nail gun of the present invention, and a schematic diagram of the labor-saving device 20 in the first position. When the nail gun of the present invention is not actuated, the labor-saving device 20 is pressed against the convex portion 223 of the movable member 22 due to the elastic release of the elastic member 24, and the pressing portion 212 of the pressing member 21 is linked up to the movable member 22 and because of the connecting member 224. The movable portion 22 is moved downward in the direction of the nail piece 17 by being higher than the restricting portion 225. At this point, the pivot ^:
St113之第一端1131而鄰近按壓部212，實施呈萌 、暮動部216與呈直線之抵頂部161嗜合，活動件2: 之連動部222連動擊針片17，同時彈片14第一端⑷身 200927401 驟擎釘片17,利用容室124的空間容納彈片！ 山 141以及活動件22之連動部微凸伸於擊釘片π = 部⑽改變哺合位置時，同時以連接件挪連 1動 改變相對於導槽113的位置，連接件224與限制部 距離是固定的’限制部225可隨著按壓件21 的 Ο Ο 侧殼體11之間以連接件224為圓心呈孤線移動。、舌: 22被限制在按壓件21的兩侧壁211之_空間如 利用連接件224與限制部225限制活動件22 °、 由圖中可驗壓件2丨施力與軸擊釘片17^乡動其方^ 在活動槽221中移動的連接件224為支點，連接 ;=212為施力臂L1’連接件m至擊釘片1?為抗= =圖五至圖七，為本發明省力裝置2Q之動作圖。按 f按壓件21，轉動部216私純财m，並隨著按 壓部212下壓改變嗜合位置，當喃合位置改 t連接件224與限制部225以嗜合快速轉，並連動= 。料第—連接件224(支點）將在 =槽221内快速移動，利用隨著按_ 212持續下壓而 件224與限制部225快速改變位置，使限制於㈣ 213内之活動件22之連動部222上升，活 223壓縮彈性件24，且連動# 222、t 凸邛 ㈣片i㈣彈片=24連，17向上提， 14弟柒141往上提，活動件22受到 連接件224在活動槽221内移動而改變支點位置， 23並往導槽113第二端1132移動，讓限制部225抵頂於 200927401 活動槽221的末端，此時，活動件22的連動部222脫離擊 釘件17第一連接孔m ’利用彈性件24雜回復使按壓 部212再度回到高點’以及彈片14的反彈力量使擊針片 Π產生向下衝擊的力量，順利完成擊釘動作。 欲擊釘時，按壓部212下壓，改變按壓件21與抵頂件 16的嚙合位置，同時樞接塊23在侧殼體u之導槽I”内 移動，並令活動件22退位至限制部225，讓活動件22之 ΟThe first end 1131 of the St113 is adjacent to the pressing portion 212, and the priming portion 216 is formed to be in line with the top portion 161, and the linking portion 222 of the movable member 2: the striking piece 17 is interlocked, and the first end of the elastic piece 14 is simultaneously (4) Body 200927401 The sudden nail piece 17 uses the space of the chamber 124 to accommodate the shrapnel! The interlocking portion of the mountain 141 and the movable member 22 slightly protrudes from the nailing piece π = portion (10) to change the feeding position, and simultaneously changes the position relative to the guide groove 113 by the connecting member, and the distance between the connecting member 224 and the restricting portion The fixed portion 225 can be moved in a lone line with the connecting member 224 as the center of the pressing member 21 between the dam side casings 11. The tongue 22 is limited to the space of the two side walls 211 of the pressing member 21, such as the movable member 22 is restrained by the connecting member 224 and the restricting portion 225, and the pressing member 2 is biased by the pressing member 2 in the figure. ^乡动方^ The connecting member 224 moving in the movable slot 221 is a fulcrum, connected; = 212 is the force-applying arm L1' connecting member m to the nailing piece 1? It is anti-== Figure 5 to Figure 7, for the The action diagram of the labor saving device 2Q is invented. Pressing the pressing member 21, the rotating portion 216 is purely m, and changes the incompatibility position as the pressing portion 212 is pressed down. When the pressing position is changed, the connecting member 224 and the restricting portion 225 are fast-changed, and interlocked =. The material-connecting member 224 (fulcrum) will move rapidly in the =-slot 221, and the member 224 and the restricting portion 225 are rapidly changed in position as the pressing of the _212 continues to press, so that the movable member 22 in the (four) 213 is interlocked. The portion 222 rises, the live 223 compresses the elastic member 24, and the interlocking #222, the t-convex (four) piece i (four) elastic piece = 24 links, 17 is lifted upwards, 14 the younger brother 141 is lifted up, and the movable member 22 is received by the connecting member 224 in the movable slot 221 The inner locating position changes the fulcrum position, 23 and moves to the second end 1132 of the guiding groove 113, so that the restricting portion 225 abuts against the end of the movable slot 221 of 200927401. At this time, the linking portion 222 of the movable member 22 is separated from the nailing member 17 first. The connecting hole m' uses the elastic member 24 to return the pressing portion 212 to the high point again, and the rebounding force of the elastic piece 14 causes the striking piece to generate a downward impact force, and the nailing operation is smoothly completed. When the nail is to be struck, the pressing portion 212 is pressed down to change the meshing position of the pressing member 21 and the abutting member 16, while the pivoting block 23 moves in the guide groove I" of the side casing u, and the movable member 22 is retracted to the limit. Part 225, let the top of the moving piece 22
3部微脫離騎片17。其中連接件m所在位置為省 力4置20的支點.，利用連接件细移動而 支點越往擊釘片17的方Λ孩無人a丄 艾又位置 令施力臂越來越長，抗力 ^ tit使操作者可以較為省力使崎餘。由圖七 見與抗力#L4之相對關係 較，U>L1，L4<L2。 ” 圃立相 偷…:巧今、我％,刀型乎動釘鎗按壓件21另一實 幻之不^。其中按齡21與 可利用兩限制部⑽進一步限制於活動二:、= _伸，當活動件22容置於空=侧:f向空間 時凸伸於活動件22之活動槽門^ ’限制部⑽同 件2_艮制物__ 213==用連接 的其他構件與前述相同，在此不多作^移動。本實施例 於本=;=3動：係利用按壓件物 抵頂部，同時讓^操控按壓件時，以掣動《合 门曰讀故於按屢件内之活動件快速位移， 10 200927401 .連動擊釘片，而設於按壓件的支點是—可移動之支點，當 擊釘時，施力臂越來越長，抗办臂越來越短，而令操作; 知:壓知:壓件時可越來越省力。使操作者可以較省力的方式 操作該釘鎗，同時可大幅提昇工作效率。同時省力裝置的 活動件以導槽限制位移，導槽的設計可承受較大的負荷， 並可以更為準確的改 變位置。 就以上所述可以歸納出本發明具有以下之優點： 1. 本發明『省力型手動釘鎗』，其中本發明設有一可移 動的支點，當欲擊釘時，施力臂越長，抗力臂越短，可越 來越省力的擊釘.。 2. 本發明『省力型手動釘鎗』，其中按壓件與本體嚙 合，利用改變嚙合位置讓活動件快速移動，達到快速連動 擊釘片。 3. 本發明『省力型手動釘繪』，其中本發明利用較省力 的方式操作釘鎗而可大幅提昇工作效率。 4. 本發明『省力型手動釘鎗』，其中本發明省力裝置的 活動件以導概織移，導槽的設計可承雜大的負荷， 並可以更為準確的改變位置。 由是觀之，本發明極具產業上利用價值；且又未見有 相同或類似之發明出現於國内外刊物或公開使用，實已符 δ專利法規定之積極及消極要件，理應准予發明專利。 唯上所述者，僅為本發明之較佳實施例而已，當不能 以之限定本發明實施之範圍，故舉凡數值之變更或等效^ 件之置換，或依本發明申請專利範圍所作之均等變化與修 11 Ο 200927401 飾’皆應偏本發料軸蓋之範嘴 【圖式之簡要說明】 圖一：為本發明省力型手 圖二：為本發明省之立體外觀圖。 圖三：為本發明由圖—2=之立體分解圖。 力裝置於第-位置之示意圖。 ％之抽圖 圖四：為本發明由圖—之4—4剖面線所取 接塊於導槽第一端之示意圖。 圖五：為本發明省力I置之動作圖。 圖六：為本發明省力裝置於第二位置之示意圖。 圖七：為本發明樞接塊於導槽第二端之示意圖。 圖八.為本發明省力型手編了鎗件之另—干旁圖 附件：我國專利公告編號第57629。號專利案：… 表省 表框 Ο 【主要元件符號說明】 10 本體 11 112 容孔 113 1132 第二端 12 122 底壁 123 13 釘匣 14 彈片 141 15 缓衝塊 16 17 擊釘片 171 側殼體 111 握持部 導槽 1131 第一端 前殼體 121 側壁 執道 124 容室 第一端 142 第二端 抵了貝件 161 抵頂部 第一連接孔 172 第二連接孔 12 200927401 18 固定件 20 省力裝置 21 按壓件 211 側壁 212 按壓部 213 空間 214 第一柩孔 215 弟_一枢孔 216 掣動部 217 擋部 218 限制部 22 活動件 221 活動槽 222 連動部 223 凸部 224 連接件 225 限制部 23 框接塊 231 擋壁 232 穿孔 24 彈性件 ❹ 133 parts are slightly detached from the riding piece 17. The position of the connecting member m is the fulcrum of the labor saving 4 set 20, and the connecting piece is finely moved, and the fulcrum is more than the square of the nailing piece 17 and the position of the urging arm is longer and longer, the resistance is ^ tit Allows the operator to save more effort. From Figure 7 to see the relative relationship with resistance #L4, U > L1, L4 < L2.圃立相偷偷:: Qiaojin, I%, the knife type is similar to the nail gun pressing member 21. In fact, the age limit 21 and the available two restriction parts (10) are further restricted to the activity two:, = _ Stretching, when the movable member 22 is accommodated in the empty=side: f is a movable slot door that protrudes from the movable member 22 when the space is in the space. 'The restriction portion (10) is the same piece 2_艮物物__ 213== other components connected with The same as the above, there is no more movement here. This embodiment is based on this ===3 movement: the use of the pressing piece to the top, while letting ^ control the pressing piece, to shake the "closed door reading" The moving parts in the piece are quickly displaced, 10 200927401. The nailing piece is linked, and the fulcrum set on the pressing part is the movable fulcrum. When the nail is hit, the force applying arm is longer and longer, and the arm is shorter and shorter. , knowing: knowing: pressing parts can be more and more labor-saving. It allows the operator to operate the nail gun in a labor-saving manner, while greatly improving work efficiency. At the same time, the movable part of the labor-saving device is limited by the guide groove. The guide groove is designed to withstand a large load and can change the position more accurately. The utility model has the following advantages: 1. The invention provides a labor-saving manual nail gun, wherein the invention has a movable fulcrum. When the nail is to be nailed, the longer the force-applying arm, the shorter the resistance arm, and the more labor-saving. 2. The nail of the invention: 2. The labor-saving manual nail gun, wherein the pressing member is engaged with the body, and the movable member is quickly moved by changing the meshing position to achieve fast linkage nailing. 3. The invention saves the manual nailing The invention can greatly improve the working efficiency by operating the nail gun in a labor-saving manner. 4. The invention provides a labor-saving manual nail gun, wherein the movable part of the labor-saving device of the invention is guided by the guide, and the design of the guide groove It can bear a large load and can change the position more accurately. From the point of view, the invention has great industrial value; and no identical or similar invention appears in domestic and foreign publications or public use. The positive and negative requirements of the δ patent law have been granted to the invention patents. The above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto. Changes in numerical values or replacement of equivalents, or equivalent changes made in accordance with the scope of the present invention and repairs 11 Ο 200927401 Decorations should be partial to the hair shaft cover of the hair shaft [a brief description of the drawings] Figure 1 The utility model is a labor-saving hand drawing of the present invention: a three-dimensional appearance diagram of the province of the present invention. Fig. 3 is an exploded perspective view of the invention by the figure 2 = 2. A schematic diagram of the force device in the first position. It is a schematic diagram of the first end of the guide groove taken by the section line 4-4 of the present invention. Fig. 5 is an action diagram of the labor saving I of the present invention. Fig. 6 is a second diagram of the labor-saving device of the present invention. Fig. 7 is a schematic view of the pivoting block of the present invention at the second end of the guide groove. Fig. 8. The other side of the invention is a labor-saving type hand-wrapped gun accessory: China Patent Publication No. 57629. No. Patent: ... table table frame Ο [Main component symbol description] 10 body 11 112 hole 113 1132 second end 12 122 bottom wall 123 13 nail 匣 14 spring 141 15 buffer block 16 17 nail plate 171 side shell Body 111 grip portion guide groove 1131 first end front housing 121 side wall guide 124 first chamber end 142 second end abuts the shell member 161 abuts the top first connecting hole 172 second connecting hole 12 200927401 18 fixing member 20 Labor-saving device 21 Pressing member 211 Side wall 212 Pressing portion 213 Space 214 First boring hole 215 Brother _ a pivot hole 216 Moving portion 217 Stop portion 218 Restricting portion 22 Moving member 221 Moving groove 222 Linking portion 223 Projection portion 224 Connecting member 225 Restriction Portion 23 frame block 231 retaining wall 232 perforation 24 elastic member ❹ 13