200835640 九、發明說明： 【發明所屬之技術領域】 ， 本發明主要係揭示一種手拉器，尤指具有雙捲輪可自 動迴捲綑帶之手拉器者。 【先前技術】 請參照圖十二，為習知手拉器之立體外觀圖，習知的 藝 手拉器9具有一收帶裝置91 ’該收帶裝置91可藉由扳動 件92將捆帶93捲收，惟，當捆帶93全部收納於收帶裝置 91 3守，會使得收帶裝置μ捲繞相當大體積，使得攜帶不 方便，且，如此大捆的捲帶，並不容易拿取，若該手拉器 9掉落時’已捲收完成的捆帶93容易散落一地，因此，習 知將捆φ 93全部捆於一收帶裝置91，並不好用，確實有 加以改良之必要。 『有鑑於上述習知結構之缺失，本發明人乃發明出一種 • :具自動捲帶之雙捲輪手拉器』，其係可克服上述習知結 構之所有缺點。 【發明内容】 本發明『具自動捲帶之雙捲輪手㈣』所欲解決之技 二問題係在於，f知手拉賴財單邊收帶裝置，當全部 完賴，卿成—體魏大·妓置，不僅 揣^旱取’且谷易使騎完錢捆帶容綠落，而失去了 捲㈣意義’故此種問題有改良之必要。 200835640 本务明『具自動捲帶之雙捲輪 本體，具有第一端與第二端，且 ；；』-包括有 有-第-限位部與-第中第二知的端緣處分別設 r，部’且該本體_設有一勾 中段處接設於本體；一第—胁弟^與一弟二端’其中 係可自動捲帶卜第輪’錢該本體之第一端， 仏^ , 捲輪’狀該本體之第二端，係可 二:扳動件，—端為扳動端’另-端為樞接端， ::ί:同，與該第二捲輪設於本體之第二端，且該樞接 ===接槽’該樞接槽包含有—定位部與一滑移 邛，该扳動件上還設有一定位件，· 藉由該扳動件上之定位件卡設於本體之第—限位部， =桿件第二端落於扳動件樞接槽之定位部，控制第二捲 輪無法轉動’而使第一捲輪可自動收拥帶；而當第一捲輪 已收滿捆帶時’該捆帶將賴該勾桿之第 使^ 開扳動件之定位部，此時，扳動扳動件上定位件;= 體之第二限位部，使勾桿第二端落於扳動件樞接槽之滑移 部，此時第二捲輪同時捲收第一捲輪與外部之捆帶。 ’、他目的、優點和本發明的新穎特性將從以下詳細的 描述與相關的附圖更加顯明。 【實施方式】 有關本發明所採用之技術、手段及其功效，茲舉一較 佳實施例並配合圖式詳述如後，此僅供說明之用，在專利 申請上並不受此種結構之限制。 200835640 參照圖一，為本發明第一實施例手拉器之立體外觀 圖’其包括有一本體10、——第一捲輪20、一第二捲輪3〇 與一扳動件40 ;其中： 請參照圖二至圖四，該本體1〇具有第一端1〇1與第二 端102 ’其第一端101設有一固定部η，該固定部η係用 以接設固定繩或固定掛鉤。該本體1〇之第一端1〇1與第一 端102分別形成有一穿孔1〇3與一卡位孔104，而於第二 端102之端緣處還形成有一滑移部105、一第一限位部1〇6 與一第二限位部107。 該第一捲輪20包含有一桿件21穿設於本體1〇第一端 1〇1之穿孔103，再穿設於一迴轉軸22，該迴轉軸22内套 設有一迴轉件23，且該桿件21同時穿設於該迴轉件23， 於本實施例中該迴轉件23係實施為一扭轉彈簧。該桿件 21插置卡固於該卡位孔1〇4，、以一 c形扣211限位於穿孔 103處，且一定位件212填入剖槽狀的桿件21尾端處，以 增加該桿件21之結構強度。 —該第二捲輪30之主要實施方式係同第一捲輪2〇，惟 ，二捲輪30之迴轉軸32其二端係實施為單向棘輪33。該 早向棘輪33之壁面形成一定位槽331，該定位槽331係呈 葉^狀，而具有定位部332與滑移部333。該迴轉軸32内 套設有一迴轉件34,且該桿件31同時穿設於該迴轉件34, 於本實施例中該迴轉件34係實施為—扭轉彈簧。 該扳動件40設有一扳動端41與一樞接端42，其中該 樞接端42形成一穿孔421與一樞接槽犯2，該樞接槽4找 200835640 二:二,·該扳動件4°係藉由穿孔421 於鎖定位置 處還凸設有」=:動。該扳動件40於樞接端， * 、推# 43。该扳動件40於扳動端41與樞接 =中揭有-賴44，賴#44可供裝設一定位200835640 IX. Description of the invention: [Technical field to which the invention pertains] The present invention mainly discloses a hand puller, especially a hand puller having a double reel which can automatically rewind a strap. [Previous Art] Referring to FIG. 12, which is a perspective view of a conventional hand puller, the conventional art hand 9 has a take-up device 91'. The take-up device 91 can be bundled by the pull member 92. With a roll of 93, only when the straps 93 are all stored in the take-up device 91 3, the take-up device μ can be wound up to a relatively large volume, making it inconvenient to carry, and such a large bundle of tape is not easy. When the handle 9 is dropped, the bundle 93 that has been retracted is easily scattered. Therefore, it is not easy to bundle the bundle φ 93 in a take-up device 91. The need to improve. In view of the above-described lack of the conventional structure, the inventors have invented a double-roller with automatic tape reel which overcomes all the disadvantages of the above-mentioned conventional structure. SUMMARY OF THE INVENTION The technical problem of the invention is that the problem of the two-roller (four-roller with automatic tape reel) is that the hand-held device of the hand-held singularity is singularly singularly The big 妓 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 200835640 The present invention clearly has a double-reel body with automatic tape reeling, having a first end and a second end, and;; - including a - first - limit portion and - a second middle end Set r, the part 'and the body _ is provided with a middle section of the hook connected to the body; a first - threaten brother ^ and a younger two end 'in which the system can automatically roll the first round of the money, the first end of the body, 仏^, the reel's shape is the second end of the body, the system can be two: the triggering member, the end is the pulling end, the other end is the pivoting end, :: ί: the same, and the second reel is set at The second end of the body, and the pivoting joint === the connecting groove. The pivoting groove includes a positioning portion and a sliding raft, and the locating member further comprises a positioning member, by using the locating member The positioning member is clamped on the first limit portion of the body, and the second end of the rod member falls on the positioning portion of the pivoting groove of the trigger member, and the second reel is controlled to be unable to rotate, so that the first reel can be automatically received. When the first reel has been filled with the strap, the strap will be pulled by the first part of the hook to open the positioning portion of the trigger member. At this time, the positioning member on the trigger member is pulled; a second limit portion for making the second end of the hook The sliding portion of the pivoting groove of the trigger member is dropped, and the second reel simultaneously retracts the strap of the first reel and the outer portion. The objects, advantages and novel features of the present invention will become more apparent from the following detailed description. [Embodiment] The technology, the means and the functions thereof used in the present invention are described in detail with reference to the drawings, which are for illustrative purposes only, and are not subject to such a structure in the patent application. The limit. 200835640 is a perspective view of a handler of a first embodiment of the present invention, which includes a body 10, a first reel 20, a second reel 3〇 and a trigger member 40; Referring to FIG. 2 to FIG. 4 , the body 1 has a first end 1 〇 1 and a second end 102 ′. The first end 101 is provided with a fixing portion η for fastening a fixing rope or a fixing hook. . The first end 1〇1 and the first end 102 of the body 1 are respectively formed with a through hole 1〇3 and a latching hole 104, and a sliding portion 105 is formed at an end edge of the second end 102. A limiting portion 1〇6 and a second limiting portion 107. The first reel 20 includes a hole member 21 extending through the through hole 103 of the first end 1〇1 of the body 1 and then passing through a rotating shaft 22, and the rotating shaft 22 is sleeved with a rotating member 23, and the rotating shaft 22 is disposed. The rod member 21 is simultaneously disposed on the rotating member 23, and in the embodiment, the rotating member 23 is implemented as a torsion spring. The rod member 21 is inserted into the latching hole 1〇4, and is bounded by a c-shaped buckle 211 at the through hole 103, and a positioning member 212 is filled in the end of the truncated rod member 21 to increase The structural strength of the rod member 21. The main embodiment of the second reel 30 is the same as the first reel 2, but the rotary shaft 32 of the second reel 30 is embodied as a one-way ratchet 33. A positioning groove 331 is formed in the wall surface of the early ratchet wheel 33, and the positioning groove 331 has a shape of a leaf and has a positioning portion 332 and a sliding portion 333. A rotary member 34 is disposed in the rotary shaft 32, and the rod member 31 is simultaneously disposed on the rotary member 34. In the embodiment, the rotary member 34 is implemented as a torsion spring. The triggering member 40 is provided with a pivoting end 41 and a pivoting end 42. The pivoting end 42 forms a through hole 421 and a pivoting slot 2, and the pivoting slot 4 is located at 200835640 2:2. The moving member 4° is also convexly disposed at the locking position by the through hole 421. The trigger member 40 is at the pivot end, *, push #43. The triggering member 40 is pivotally connected to the pivoting end 41.
划yf/定位件45之兩側分卿成有一定位部451'該定仅 广51係突露出該扳動件4〇之兩側，且該定位部如係可 ^於該本體10之滑移部1〇5上，且同時伸入於該棘輪 之棘齒間。該定位件45異於該定位部451 <-端設有 拉桿452 ’該拉桿452可供使用者拉動。該穿槽44内還 設有-凸塊，該ώ塊可供裝設一彈性體46，該彈性體奶 一端勾設於凸塊，另—端係抵靠於該定位件45上，使該定 位件45可轉有-力馳於該本體1{)之滑移部⑽上。 该本體ίο内設有一可彈性滑動的卡固件12，該卡固 件12之兩側分別形成有一卡固部，該卡固部係突露出該本 體10之兩側。該本體10内還設有一勾桿13，該勾桿13 第-端131與第二端132，該第-端131平時狀態是 抵罪於本體10底部，該勾桿13第二端132則同時勾設於 該扳動件40之樞接槽422與第二捲輪3〇棘輪33之定位槽 331，該勾桿13的中段處133鎖固於本體1〇壁面，且於中The two sides of the yf/positioning member 45 are divided into a positioning portion 451', and only the wide 51 system protrudes from both sides of the triggering member 4, and the positioning portion is slidable to the body 10 The part 1〇5 is at the same time and protrudes between the ratchets of the ratchet. The positioning member 45 is different from the positioning portion 451. The end is provided with a pull rod 452'. The pull rod 452 is for the user to pull. The through hole 44 is further provided with a protrusion, and the block can be provided with an elastic body 46. One end of the elastic body is hooked on the protrusion, and the other end is abutted against the positioning member 45. The positioning member 45 is rotatably coupled to the sliding portion (10) of the body 1{). The body ίο is provided with an elastically slidable fastener 12, and two sides of the fastening member 12 are respectively formed with a fastening portion, and the fastening portion protrudes from both sides of the body 10. The body 10 is further provided with a hook 13 , the first end 131 and the second end 132 of the hook 13 , the first end 131 is in a state of being against the bottom of the body 10 , and the second end 132 of the hook 13 is simultaneously hooked The pivoting groove 422 of the triggering member 40 and the positioning groove 331 of the second reel 3 and the ratchet wheel 33, the middle portion 133 of the hooking rod 13 is locked on the wall surface of the body 1 and is in the middle
权處133與第二端132中間設有一彈性體134，該捧性體 134另一端勾設於本體1〇底部。 參照圖五，為束緊捆帶50之示意圖。於欲束緊捆帶 200835640 50時，將扳動件40扳動至本體10，使定位件45定位於滑 移部105 ’使勾桿13之第二端132勾設於扳動件4〇樞接 槽422内的滑移部424,同時勾設於棘輪33的滑移部333, 该卡固件12卡設於該棘輪33。此時，第一捲輪2〇可自動 收捆帶50，將捆帶50拉緊。 參照圖六，為本發明第一捲輪2〇收帶之示意圖。將扳 動件40扳動至第-位置，使定位件45定位該第一限位部 106 ’使勾柃13之第二端132設於第—位置而勾設於扳動 ，4ϋ樞接槽422内的定位部423，同時勾設於棘輪33的 ，位4 332 ’使棘輪33無法轉動，該勾桿13卡死於棘輪 、3内之定位部332，而限制第二捲輪3〇無法轉動，僅第一 =輪20轉動。同時扳動件4〇之頂推部43抵推該卡固件 ，此時，利用第一捲輪2〇可自動收捆帶5〇。 回參照圖七，為本發明第一捲輪20收滿捆帶50之示音 -捲輪20收滿捆帶5〇時，捆帶5〇壓迫於該勾； 端m，使勾桿13第二端132向上趣起，此時第一 拾輪20已沒有空間收_ 50 了，㈣5q 3〇收納，惟，此時僅能收納少數的捆帶5〇，第弟一捲^ 即會卡死。 乐一捲輪30 參照圖八，為本發明第二捲輪 動件仙韻至第二妓時，蚊位件4=；=^板 動件，柩接槽422内的滑移部42置而勾:於扳 的滑移部娜’_之頂推部=3 200835640 此時，第二捲輪30可自動收捆帶5〇，該棘輪33並作順時 =轉動，可滑順的令定位槽33i相對於勾# 13轉動。此時， 第二捲輪30同時捆收第一捲輪2〇與外部之捆帶5〇。藉由 該第二捲輪30之定位槽331實施成葉片狀，使第二捲輪 30可容易控制轉動或限制轉動。 參照圖九至圖十一，為本發明第二實施例手拉器之立 體外麵、立體分解圖與剖面示意圖。本發明第二實施例 之主要實施方式係相同於第—實施例，僅該第—捲輪2〇 與第二捲輪3G之自動捲收方式異於第—實施例。本實施例 中$亥桿件21、31係直接穿設於該迴轉軸22、32，該桿件 21、31穿於該本體1〇之壁面，該第一端1〇1與該第二端 102之二壁面，分別設有四個穿孔1〇3，令桿件21、31穿 設於穿孔103，一實施為簧帶之迴轉件24、35之内圈分別 卡設於該桿件21、3卜一蓋體25、36卡設於該迴轉件24、 35之外圈，且將該迴轉件24、35包覆於其内，該c形扣 2U、311將迴轉件24、35限制於該桿件21、31。 本實施例僅該一捲輪20、30之自動捲收方式異於第一 實施例，其他結構皆相同於第一實施例，在此不多做贅述。 本發明解決了習知單一收帶裝置之缺失，藉由本發明 本體之二端同時設有第一捲輪與第二捲輪，而達到二端皆 可自動捲收捆帶之設計。當第一捲輪在捲收捆帶時，限制 弟一捲輪無法轉動，而僅以第一捲輪捲收，使第一捲輪捲 滿捆帶，而開放第二捲輪轉動，第二捲輪又自動捲收捆帶， 同時從第一捲輪及外部將捲帶捲收至第二捲輪，而第二捲 200835640 輪將自動捲收捲帶，直至捲帶捲完或第二捲輪捲收已滿。 就以上手拉器僅具有單一所述可以歸納出本發明具有 以下之優點·· 1.本發明『具自祕帶之她輪手拉器』，其中本發 明可將捲帶捲·二捧輪，使得捲收捆帶的長度增加。 2·本發明『具自動捲帶之雙捲輪手拉器』，其中該第 -捲輪捲帶捲_，會自動停止，不會有捲帶捲收至溢出 的現象。 3.本發明『具自祕帶之雙捲輪手姉』，其中該第 二捲輪具有防卡關功效，使捲收捆帶更為順^ 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_外刊物或公開使用，實已符 合專利法蚊之雜及雜要件，理絲予發明專利。 !·隹上所述者，僅為本發明之較佳實施例而已，當不能 以之限定本義實狀襲，故軌數值之變更或等效元 件之置換，或依本發日科請專__作之轉變化轉 飾，皆應仍屬本發明專利涵蓋之範疇。 … 【圖式之簡要說明】 圖一：為本發明第一實施例之立體外觀圖。 圖二：為本發明之立體分解圖。 圖三：為本發明由圖—之3—3剖面線所取之剖視圖。 圖四：為本發明由圖一之4—4剖面線所取之剖視圖。 圖五·為本發明圖三之延續，表拉緊捆帶之示意二。 11 200835640 圖六：為本發明圖三之延續，表第一捲輪收捆帶之示意圖。 圖七：為本發明圖三之延續，表第一捲輪收滿捆帶之示意 圖0 圖八：為本發明圖三之延續，表第二捲輪收捆帶之示意圈 圖九·為本發明第二實施例之立體外觀圖。 圖十 圖十二 圖十‘為本發明第二實施例之立體分解圖。An elastic body 134 is disposed between the right end 133 and the second end 132. The other end of the holding body 134 is hooked on the bottom of the body 1〇. Referring to Figure 5, a schematic view of the strap 50 is shown. When the straps 200835640 50 are to be tightened, the trigger member 40 is pulled to the body 10, so that the positioning member 45 is positioned at the sliding portion 105' so that the second end 132 of the hook 13 is hooked on the pivoting member 4 The sliding portion 424 in the groove 422 is simultaneously hooked on the sliding portion 333 of the ratchet 33, and the fastener 12 is engaged with the ratchet 33. At this time, the first reel 2 can automatically take up the strap 50 and tighten the strap 50. Referring to Figure 6, a schematic view of the first reel 2 pick-up belt of the present invention is shown. The trigger member 40 is pulled to the first position, and the positioning member 45 is positioned to the first limiting portion 106' so that the second end 132 of the hook 13 is disposed at the first position and is hooked on the toggle, 4ϋ pivot slot The positioning portion 423 in the 422 is simultaneously hooked on the ratchet 33, and the position 4 332 ' makes the ratchet 33 unable to rotate. The hook 13 is stuck in the positioning portion 332 in the ratchet wheel 3, and the second reel 3 cannot be restricted. Rotate, only the first = wheel 20 rotates. At the same time, the pushing portion 43 of the pulling member 4 is pushed against the card fastener. At this time, the first reel 2 can be used to automatically bundle the belt 5〇. Referring back to FIG. 7, when the first reel 20 of the present invention is filled with the strap 50, the reel-reel 20 is filled with the strap 5〇, the strap 5〇 is pressed against the hook; the end m is such that the hook 13 is The second end 132 is fun to go up. At this time, the first pick-up wheel 20 has no space to receive _ 50, (4) 5q 3〇 storage, but only a small number of straps can be stored at this time, and the first brother will be stuck. . Referring to FIG. 8 , in the second roll of the present invention, the mosquito bit member 4=;=^ the plate moving member, and the sliding portion 42 in the splicing groove 422 is disposed. Hook: the sliding part of the puller Na'_ top push part = 3 200835640 At this time, the second reel 30 can automatically bundle the belt 5 〇, the ratchet 33 is made in time = rotation, smooth positioning The groove 33i is rotated with respect to the hook #13. At this time, the second reel 30 simultaneously bundles the first reel 2〇 with the outer strap 5〇. The positioning groove 331 of the second reel 30 is formed in a blade shape, so that the second reel 30 can easily control the rotation or restrict the rotation. Referring to Figures 9 through 11, an external, perspective exploded view and a cross-sectional view of the stand of the hand puller of the second embodiment of the present invention are shown. The main embodiment of the second embodiment of the present invention is the same as the first embodiment, and only the automatic rewinding method of the first reel 2 〇 and the second reel 3G is different from the first embodiment. In this embodiment, the slabs 21 and 31 are directly disposed on the rotary shafts 22 and 32. The rods 21 and 31 are passed through the wall surface of the body 1 , and the first end 1 〇 1 and the second end are The wall of the 102nd wall is respectively provided with four perforations 1〇3, so that the rods 21 and 31 are disposed in the perforations 103, and the inner rings of the revolving parts 24 and 35 which are implemented as the reeds are respectively engaged with the rods 21, 3, a cover body 25, 36 is disposed on the outer ring of the rotary member 24, 35, and the rotary member 24, 35 is covered therein, the c-shaped buckle 2U, 311 limits the rotary member 24, 35 to The rods 21, 31. In this embodiment, only the automatic rewinding mode of the reel 20, 30 is different from that of the first embodiment, and other structures are the same as those in the first embodiment, and details are not described herein. The invention solves the problem of the conventional single take-up device. The two ends of the body of the present invention are provided with the first reel and the second reel at the same time, so that the design of the automatic winding of the strap at both ends is achieved. When the first reel is in the winding and unwinding, the first reel is not able to rotate, but only the first reel is retracted, so that the first reel is full of the strap, and the second reel is rotated, the second The reel automatically retracts the strap, and the reel is retracted from the first reel and the outside to the second reel, while the second reel 200835640 will automatically reel the reel until the reel is finished or the second reel The round is full. As far as the above hand puller has only a single one, it can be summarized that the present invention has the following advantages: 1. The present invention has a self-secret belt of her wheel puller, wherein the present invention can be used for winding a roll and a second hand wheel , so that the length of the take-up strap is increased. 2. The invention of the invention relates to a double-roller hand-held device with automatic tape winding, wherein the first-winding tape reel _ is automatically stopped, and there is no phenomenon that the reel is retracted to overflow. 3. The invention relates to a double-roller handcuff with a self-secret belt, wherein the second reel has an anti-carding effect, so that the winding and converging belt is more smooth, and the invention is highly utilized in the industry. Value; and no identical or similar invention appeared in the _ external publication or public use, has been in line with the patented mosquitoes and miscellaneous pieces, Lisi to invention patent. The above description is only a preferred embodiment of the present invention, and when the meaning of the original meaning cannot be limited, the change of the track value or the replacement of the equivalent component, or the Japanese _ The change of the conversion, should still be covered by the patent of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a first embodiment of the present invention. Figure 2 is a perspective exploded view of the present invention. Figure 3 is a cross-sectional view of the present invention taken along line 3-5 of the figure. Figure 4 is a cross-sectional view of the present invention taken along line 4-4 of Figure 1. Figure 5 is a continuation of Figure 3 of the present invention, and the table is shown in Figure 2. 11 200835640 Figure 6: Schematic diagram of the first reel of the table in the continuation of Figure 3 of the present invention. Figure 7: The continuation of Figure 3 of the present invention, the schematic diagram of the first reel of the table is filled with the straps. Figure 8: The continuation of Figure 3 of the present invention, the schematic circle of the second reel of the table is shown in Figure IX. A perspective view of the second embodiment of the invention. Figure 10 Figure 12 Figure 10 is an exploded perspective view of a second embodiment of the present invention.
:習ϋ:?:之H-11剖面線所取之剖視圖 馬^知手拉裔之立體外觀圖。 【主要元件符號說明j (習知） 9 手拉器 92 扳動件 (本創作） 10 本體 102 第二端 104 卡位孔 106 第一限位部 11 固定部 13 勾桿 132 第二端 134 彈性體 20 第一捲輪 211 C形扣 91 收帶裝置 93 捆帶 101 第—端 103 穿孔 105 滑移部 107 第二限位部 12 卡固件 131 第-端 133 中段處 21 桿件 212 定位件: Xi::: The cross-sectional view taken by the H-11 section line. [Main component symbol description j (conventional) 9 Handle 92 Trigger (this creation) 10 Body 102 Second end 104 Card hole 106 First limit portion 11 Fixing portion 13 Hook 132 Second end 134 Elastic Body 20 first reel 211 C-shaped buckle 91 take-up device 93 strap 101 first end 103 perforation 105 slip portion 107 second limit portion 12 fastener 131 first end 133 mid-section 21 rod 212 positioning member
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22 迴轉軸 23 迴轉件 24 迴轉件 25 蓋體 30 第二捲輪 31 桿件， 311 C形扣 312 定位件 32 迴轉軸 33 棘輪 331 定位槽 332 定位部 333 滑移部 34 迴轉件 35 迴轉件 36 蓋體 40 扳動件 41 扳動端 42 樞接端 421 穿孔 422 樞接槽 423 定位部 424 滑移部 43 頂推部 44 穿槽 45 定位件 451 定位部 452 拉桿 46 彈性體 50 捆帶 1322 Rotary shaft 23 Rotary member 24 Rotary member 25 Cover body 30 Second reel 31 Rod, 311 C-shaped buckle 312 Positioning member 32 Rotary shaft 33 Ratchet 331 Positioning groove 332 Positioning portion 333 Slip portion 34 Swing member 35 Swing member 36 Cover 40 Pulling member 41 Pulling end 42 Pivot end 421 Perforation 422 Pivot groove 423 Positioning portion 424 Slip portion 43 Pushing portion 44 Through groove 45 Positioning member 451 Positioning portion 452 Pull rod 46 Elastic body 50 Strap 13