1306074 九、發明說明： - 【發明所屬之技術領域】 本發明係有關一種捆綁器，尤其是指一種可換向之捆 綁器。 【先前技術】1306074 IX. INSTRUCTIONS: - TECHNICAL FIELD OF THE INVENTION The present invention relates to a binding device, and more particularly to a reversible binding device. [Prior Art]
參照我國專利證書號數第M288282號『捆綁器』，即存 在著上述之缺失。習知之創作包含有一具有二相對侧壁 11a、lib之座體卜於側壁lla、Ub上設一轴孔12，供 一軸4穿伸，而於該轴4上具有一貫穿長條孔41，俾供一 捆綁帶6穿伸，位於座體1其中一侧壁Ua外侧，該軸4 鈿緣设成凸緣42並樞設一驅動件3，而在該驅動件3與相 鄰之座體1侧壁11a間設-與軸4相固定之棘輪2。該驅 動件3向棘輪2徑向外延伸出一擺臂32，即在擺臂犯末 端柩接一卡扣塊33，在驅動件3徑向對稱擺臂犯位置凸 伸出一大於棘輪2外徑之凸輪部35，凸輪部35並設有較 外凸之擋塊351。位於棘輪2之上方樞設一卡掣件5於座 體1側壁lla，該卡掣件5並可與該棘輪2唾合作動，、並 f ’卡掣件5之厚度係大於棘輪2厚度，得以令該凸輪部 35邊緣推抵卡掣件5上擺。 捆綁器係用以供收緊繩索，但習知之捆綁器僅能捆 綁，無緩慢放鬆之設計，該捆綁器之心軸呈轉而快速旋 ，。此種快速旋鬆而無法控制之捆綁器，在使用上容易^ 生危險，而有安全上之顧慮。 5 1306074 ' 目此本發料輕了先前技術，希冀能 ' 產業界提供一具有進步性之發明。 【發明内容】 本發明『可換向之捆綁器』所欲解決之技術問題係在 於’該習知之捆綁器僅能捆綁，無緩慢放鬆之設計，該捆 鄉时之、軸呈空轉而快速旋鬆。此種快速旋鬆而無法控制 Φ 之捆綁器，在使用上容易發生危險，而容易發生工安事件。 本發明人乃針對此一問題，致力研發創造出一種安全且可 換向之捆綁器’藉由撥動一切換裝置’而可控制該驅動軸 旋轉之方向且控制繩索旋緊或旋鬆。 本發明之可換向之捆綁器，包含有一本體，設有穿設 有輛孔之二壁面；一固定座，設於該本體之第一壁面， 形成一穿孔與一容部，且該穿孔與該容部係相通；一驅動 軸，設有一驅動端、一齒部與一繞繩部，將該驅動軸穿設 • 於該固定座之穿孔及該本體壁面之軸孔，使該驅動端外露 於该固定座’而該齒部設於該固定座内，該繞繩部設於該 本體内，可捲繞有繩索；一切換裝置，設於該固定座之容 4内’包含有一嚙合件，該嚙合件形成有第一端與第二端， 二端皆實施有齒部；一定位裝置，設於該本體之第二壁面， 令該驅動軸穿設於該定位裝置。 藉由該定位裝置防止該驅動轴於捆綁時空轉，撥動該 切換裝置，使該嚙合件僅一端之齒部嚙合於驅動軸之齒 部’而驅動該驅動軸旋轉，而可控制旋緊繩索與旋鬆繩索。 1306074 【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。 參照圖一與圖二，為本發明之立體外觀圖與立體分解 圖。本發明可換向之捆綁器包括有一本體1〇，該本體1〇 係包含有-第-壁面n、-第二壁面12與一頂面13而呈 门字形，該二壁面1丨、12設有—穿透之軸孔m、121， 二中第-壁面u設有數固定孔112，令—固定座如以數 螺栓21螺固於該第一壁面n之固定孔丨^。 ，固定座20具有-軸向之穿孔22與-徑向之容部 ’且该容部23相通於該穿孔22。 =動軸30 ’係為中空之管件’依序設有一驅動端 該驅動端y' ，、一限位端35。 有四個有數驅動孔311，於本實施例中設 贿部32係賴4蚊外徑。該齒 長條孔^ 該繞騎34形成―穿透且呈轴向之 限位端：該驅動軸30之二側皆實施有該繞繩部34。該 =位端35設有一限位孔咖 20與本妒1n & J釉川穿設於固定座 體10時’一限位件36穿設於該限位孔如。 一連動裝置4G ’包含有—切換件41、—彈性體42、 姐，呈-if，合件44。該切換件41 —端為切換端 柄狀，另-端為樞轉端412,呈圓柱狀。該嗤合 1306074 件44第一面於第—端441與第二端442皆設有數正齒部 443 ’二端中間處為平端444，第二面形成-凹缺445，而 第二面舆第一面相接處係為卡抵部446。 該本體10之第二壁面12於鄰近該軸孔121處形成有 一穿設孔122與一定位孔123，該定位孔123係實施為弧 形’圍繞著該穿設孔122,該穿設孔122並形成-凹環124。 一疋位裴置50包含有一齒件51、一定位件52、一彈 性件53、扳動件54與一夾扣件55。其中該齒件51之外 周緣設有數齒部511，該齒件51由一抵擋部512而區隔出 二穿設部513，該穿設部513係實施為半圓形，恰可令該 驅動軸30穿設於該齒件51之穿設部513。該扳動件54 — 端為扳動端541 ’另一端設有一穿轴542與二定位軸543， 該定位軸543係實施於該穿軸542之二側。該穿轴542於 末端設有呈凹槽之夾扣部544。該彈性件53係實施為扭轉 彈簀，包含有二腳531、數彈性圈532與連結二者之臂部 533。該定位件52包含有一穿設部52卜而於該穿設部521 之二旁各設有一凸伸之定位部522，該定位部522之背面 形成有一固定部523，係供固定該彈性件53而呈凹狀。藉 由上述之限位件36穿設於該限位孔351，而壓住該齒件 51，令該齒件51不脫落。 請同時參照圖三，為本發明之軸向組合示意圖。該驅 動軸30穿設於該固定座2〇及該本體1〇。而使該限位端35 外露於該本體10之第一壁面n，該限位件36穿設於該限 位孔351，使該驅動軸30不至於脫落於該本體1〇。該擋部 1306074 32與第二壁面12間設有該固定座20，該容部23係包含有 第工間23卜一第二空間232與一第三空間233。該切 換件41之切換端411係設於該第一空間23ι，而該框轉端 412係設於第二空間232 ’該唾合件&則實施於第三空間 挪。且該喷合件44與該柩轉端412藉由該連動件43與該 彈性體42連接。該切換件41於_端412形成一套部 413，套設該彈性體42與該連動件43。Referring to the "Bundle" of China's Patent Certificate No. M288282, there is a lack of the above. The conventional creation includes a seat body having two opposite side walls 11a and lib, and a shaft hole 12 is formed in the side wall 11a and Ub for the shaft 4 to extend, and the shaft 4 has a through hole 41 therein. The driving member 3 and the adjacent seat body 1 are disposed on the outer side of one of the side walls Ua of the base body 1. The shaft 4 is formed as a flange 42 and a driving member 3 is pivoted. A ratchet 2 fixed to the shaft 4 is provided between the side walls 11a. The driving member 3 radially extends a swing arm 32 to the ratchet 2, that is, a snap block 33 is spliced at the end of the swing arm, and the radial symmetrical arm of the driving member 3 protrudes beyond the ratchet 2 The cam portion 35 of the radial direction and the cam portion 35 are provided with a relatively convex stopper 351. A latching member 5 is disposed on the side wall 11a of the base body 1 above the ratchet 2, and the latching member 5 can cooperate with the ratchet 2, and the thickness of the latching member 5 is greater than the thickness of the ratchet 2, The edge of the cam portion 35 is pushed against the upper portion of the latch member 5. The binding device is used to tighten the rope, but the conventional binding device can only be tied and has no slow relaxation design. The mandrel of the binding device rotates rapidly and rotates. This type of quick-release, uncontrollable binder is easy to use and has safety concerns. 5 1306074 'The original material is lighter than the prior art, and hopes that the industry will provide a progressive invention. SUMMARY OF THE INVENTION The technical problem to be solved by the "reversible binding device" of the present invention is that the conventional binding device can only be bundled, and has no slow relaxation design, and the shaft is idling and fast rotating. loose. Such a quick-release and uncontrollable Φ bundle is prone to danger in use and is prone to work safety events. The present inventors have focused on this problem and have developed a safe and commutative binder that can control the direction of rotation of the drive shaft and control the tightening or unscrewing of the rope by dialing a switching device. The reversible binding device of the present invention comprises a body having two walls facing the hole; a fixing seat disposed on the first wall of the body to form a through hole and a receiving portion, and the through hole The drive shaft is connected; the drive shaft is provided with a driving end, a tooth portion and a roping portion, and the driving shaft is penetrated through the through hole of the fixing seat and the shaft hole of the wall surface of the main body, so that the driving end is exposed The toothed portion is disposed in the fixing seat, and the roping portion is disposed in the body and can be wound with a rope; a switching device is disposed in the housing 4 of the fixing seat and includes an engaging member The engaging member is formed with a first end and a second end, and both ends are provided with a tooth portion; a positioning device is disposed on the second wall surface of the body, so that the driving shaft is disposed through the positioning device. The positioning device prevents the drive shaft from idling during the binding, and the switching device is toggled so that only one end of the engaging member engages with the tooth portion of the drive shaft to drive the drive shaft to rotate, and the tightening rope can be controlled. With loose ropes. 1306074 [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 patent application. Structural limitations. 1 and 2 are perspective views and perspective exploded views of the present invention. The reversible binding device of the present invention comprises a body 1 〇 comprising a ---wall surface n, a second wall surface 12 and a top surface 13 in the shape of a gate, the two wall surfaces 1 丨, 12 There are a plurality of fixing holes 112, and a plurality of fixing holes 112 are provided, and the fixing seat is screwed to the fixing holes of the first wall surface n by a plurality of bolts 21. The holder 20 has an axial bore 22 and a radial portion and the receptacle 23 communicates with the bore 22. The movable shaft 30' is a hollow tubular member' sequentially provided with a driving end, the driving end y', and a limiting end 35. There are four drive holes 311. In this embodiment, the bribe portion 32 is attached to the outer diameter of the mosquito. The toothed strip hole ^ forms a "penetrating" axially constrained end: the roping portion 34 is formed on both sides of the drive shaft 30. The = end 35 is provided with a limiting hole 20 and the 妒1n & J glaze is disposed in the fixed seat 10. A limiting member 36 is disposed through the limiting hole. The interlocking device 4G' includes a switching member 41, an elastic body 42, a sister, a -if, and a fitting 44. The switching member 41 has a switching end handle shape and a other end end which is a pivot end 412 and has a cylindrical shape. The first surface of the coupling 1306074 member 44 is provided with a plurality of positive tooth portions 443 at the first end 441 and the second end 442. The second end is a flat end 444, and the second surface is formed with a concave portion 445. One side of the joint is a card abutting portion 446. The second wall surface 12 of the body 10 defines a through hole 122 and a positioning hole 123 adjacent to the shaft hole 121. The positioning hole 123 is curved to surround the through hole 122. The through hole 122 is formed. And a concave ring 124 is formed. A clamping device 50 includes a tooth member 51, a positioning member 52, an elastic member 53, a trigger member 54, and a clip member 55. The outer peripheral edge of the tooth member 51 is provided with a plurality of tooth portions 511. The tooth member 51 is separated by a resisting portion 512, and the through portion 513 is semicircular. The shaft 30 is disposed through the through portion 513 of the tooth member 51. The other end of the triggering member 54 is a pulling end 541 ′. The other end is provided with a through shaft 542 and two positioning shafts 543. The positioning shaft 543 is implemented on two sides of the through shaft 542. The threading shaft 542 is provided with a grooved portion 544 at the end. The elastic member 53 is embodied as a torsion magazine, and includes two legs 531, a plurality of elastic rings 532, and an arm portion 533 connecting the two. The positioning member 52 includes a wearing portion 52, and a protruding positioning portion 522 is disposed on each side of the through portion 521. The fixing portion 523 is formed on the back surface of the positioning portion 522 for fixing the elastic member 53. It is concave. The stopper member 36 is inserted through the stopper hole 351 to press the tooth member 51 so that the tooth member 51 does not fall off. Please refer to FIG. 3 at the same time, which is a schematic diagram of the axial combination of the present invention. The drive shaft 30 is disposed through the fixed base 2 and the body 1 . The limiting end 35 is exposed to the first wall surface n of the body 10. The limiting member 36 is disposed through the limiting hole 351, so that the driving shaft 30 does not fall off the body 1〇. The fixing portion 20 is disposed between the blocking portion 1306074 32 and the second wall surface 12. The receiving portion 23 includes a second working space 23 and a second space 232. The switching end 411 of the switching member 41 is disposed in the first space 23, and the frame end 412 is disposed in the second space 232'. The salvage member & is implemented in the third space. The sprayer 44 and the twisting end 412 are connected to the elastic body 42 by the linking member 43. The switching member 41 forms a set 413 at the _ end 412, and the elastic body 42 and the linking member 43 are sleeved.
該扳動件54之穿軸542穿設於該彈性件μ之彈性圈 532與該定位件52之穿設部52卜於該穿㈣2之炎扣部 544設有實施為c形扣環之夾扣件55，令該夾扣件55穿設 於該穿設孔122内之凹環124。 參照_，為本發蚊錄置5Q定位之示意圖。切換 該扳動件54之扳動端54卜使該定位軸543壓於該彈性件 53之臂部533(圖中未示），該彈性件53之二腳531恰可置 於》亥固疋部523，而令該定位轴543穿設於該本體1〇之定 之音邱^1 該疋位件52其中一定位部522定位於該盘件51 之齒部511。 參照圖五’為本發明之切換件41撥轉至第一端之示音 圖。該切換件41之切換端411可於該第-空間23!内^ 轉，使該切換端411撥轉至第—端，而實施於該切換端4ΐι 相對位置之連動件43與彈性體42難轉至第二端，該連 動件43抵頂於該嗤合件44之凹缺秘，使該嚼合件* 二端442之齒部443喊合於該驅_ 3〇之齒部33。 參照圖六與圖七’為本發明之捆綁器纏繞题索即之動 9 1306074 = ΐ 6〇穿設於該驅動軸30之長條孔341，且於 驅動孔311切設-驅動件7G，透過該 = 驅動軸30，而將嗜颔舍Rfl緘姑从 丨卞動该 三）。該二齒物=Γ已=該纏繞部34(請參照圖 國I 44d 33因已鳴合，使該驅動轴3〇 =卡化節33 H椒恤鐘方向The wear shaft 542 of the trigger member 54 is disposed on the elastic ring 532 of the elastic member μ and the wearing portion 52 of the positioning member 52. The yoke portion 544 of the wearing member (4) is provided with a clip formed as a c-shaped buckle. The fastener 55 is configured to pass through the concave ring 124 in the through hole 122. Refer to _, which is a schematic diagram of 5Q positioning for this mosquito. The triggering end 54 of the triggering member 54 is pressed to press the positioning shaft 543 against the arm portion 533 (not shown) of the elastic member 53. The two legs 531 of the elastic member 53 can be placed in the The positioning portion 523 is disposed on the tooth portion 511 of the disk member 51. The positioning portion 522 is positioned on the tooth portion 511 of the disk member 51. Referring to Fig. 5', the switching member 41 of the present invention is turned to the first end of the sound map. The switching end 411 of the switching member 41 can be rotated in the first space 23!, so that the switching end 411 is rotated to the first end, and the linking member 43 and the elastic body 42 which are opposite to the switching end 4ΐι are difficult. Turning to the second end, the linking member 43 abuts against the concave portion of the engaging member 44, so that the tooth portion 443 of the two ends 442 of the chewing member * is shouted to the tooth portion 33 of the driving member. Referring to FIG. 6 and FIG. 7 ′′, the binding device of the present invention is 91306074 = ΐ 6〇 is inserted through the long hole 341 of the driving shaft 30, and the driving member 311 is cut-driven. Through the = drive shaft 30, the acne will be swayed by the third. The two teeth = Γ = = the winding portion 34 (please refer to the figure I 44d 33 because the ring has been closed, so that the drive shaft 3 〇 = carding section 33 H bell clock direction
2照圖A ’林發明粒裝置5Q扳動端542Photograph A 'Lin invention grain device 5Q trigger end 54
=另:定位部522定位於該齒件51之齒部J 多…圖九，為本發明切換件41 圖。該切換件41之切換物撥轉至第轉二 切換端411相對位置之連動件43與彈性體42則樞轉至°第 為該連動件43抵頂於該嗤合件之凹缺445，使兮 第-端紙她43偷該驅動軸“ “、、圖十與圖十―，為本發明之捆綁ϋ釋放繩索之動 作圖該穿设於該驅動軸3〇之長條孔341之繩索⑼，當 驅動該驅動件7〇往順時鐘^向旋轉，而可藉丨扳轉軸件 70之速度而控制該驅動車由3〇旋轉之速度，可使將該繩索 60、’二由控制而放鬆。此時，該喃合件第一端碰卡抵 部446抵頂於該第三空間2犯之壁面，使該驅動抽別僅能 往順時鐘方向旋轉。 本發明之可換向之捆綁器，係由定位裝置防止該驅動 軸於捆綁時空轉’操控該切換裝置而限制該驅動軸之轉動 1306074= another: the positioning portion 522 is positioned at the tooth portion J of the tooth member 51. FIG. 9 is a diagram of the switching member 41 of the present invention. The linking member 43 of the switching member 41 is rotated to the relative position of the second switching end 411 and the elastic member 42 is pivoted to the first position. The linking member 43 abuts against the recess 445 of the engaging member.兮The first-end paper she 43 steals the drive shaft "", Fig. 10 and Fig. 10", which is the action diagram of the bundled ϋ release rope of the present invention. The rope (9) which is inserted through the long hole 341 of the drive shaft 3〇 When the driving member 7 is driven to rotate clockwise, the speed of the driving vehicle can be controlled by 3 turns by the speed of the rotating shaft member 70, so that the rope 60, 'two can be relaxed by control. . At this time, the first end of the merging member hits the card abutting portion 446 against the wall surface of the third space 2, so that the driving drawing can only be rotated in the clockwise direction. The switchable bundle of the present invention prevents the drive shaft from idling during bundling by the positioning device to operate the switching device to limit the rotation of the drive shaft. 1306074
、、’二由㈣合件-端之齒部喷合於驅動轴之齒部，而同 間之壁面’而限制該驅動輛 而達到一可換向之功效。 之齒部僅能往單一方向旋轉， 就以上所述可以歸納出本發明具有以下之優點： 1. 本發明『可換向之捆綁器』，其中本發明之捆鄉器係 具有可換向之功效。 ' 2. 本發明『可換向之捆綁器』，其中本發明藉由—切換 裝置而控制該驅動軸之轉動方向。 、3.本發明『可換向之捆綁器』，其中本發明二齒部皆實 施為正齒，使其可順、逆時鐘旋轉。 4. 本發明『可換向之捆綁器』，其中本發明之順、逆時 鐘皆可控制轉動，而可控制繩索旋緊或旋鬆。 5. 本發明『可換向之捆綁器』，其中本發明藉由定位裝 置定位’使該驅動軸不產生空轉。 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 合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 11 1306074 / u之限定本發明實施之範園’故舉凡數值之… ' #之置換，或依本發明申請專利範騎作之驗二效元 飾，皆應仍屬本發明專利涵蓋之範疇。 =、文化與修 【圖式之簡要說明】 圖一：為本發明之立體外觀圖。 圖二：為本發明之立體分解圖。 _ 目三：為本發明由圖一之3-3剖面線所取之 切換裝置與定位裝置之示意圖。 表該 圖四：為本發明由圖一之4_4剖面線所取之 定位裝置定位之示意圖。 θ ’表該 圖五：為本發明由圖一之5_5剖面線所取之剖面 驅動軸嚙合於嚙合件第二端之示意圖。 表該 圖六·為本發明圖五之延續，表該纏繞繩索之動作 圖七：為本發明圖六之延續，表該纏繞繩索之動作g • 圖八：為本發明定位裝置定位之示意圖。 。 圖九：為本發明驅動軸嚙合於嚙合件第一端之示音 圖十：為本發明圖九之延續，表該釋放繩索之動^ 。 圖十一：為本發明圖九之延續，表該釋放繩索之動 附件：我國專利證書號數第M288282號專利案。圖。 【主要元件符號說明】 10本體 11第一壁面111軸孔 112固定孔 12第二壁面 121軸孔 12 1306074The two teeth of the (four) fitting-end are sprayed on the teeth of the drive shaft, and the wall faces of the same direction limit the drive to achieve a reversible effect. The tooth portion can only be rotated in a single direction. As described above, the present invention can be summarized as follows: 1. The "reversible binding device" of the present invention, wherein the bundler of the present invention has a reversible efficacy. 2. The "reversible binding device" of the present invention, wherein the present invention controls the direction of rotation of the drive shaft by means of a switching device. 3. The "reversible binding device" of the present invention, wherein the two tooth portions of the present invention are implemented as spurs so that they can be rotated smoothly and counterclockwise. 4. The "reversible binding device" of the present invention, wherein the forward and reverse clocks of the present invention can control the rotation, and can control the rope to be tightened or unscrewing. 5. The "reversible bundle" of the present invention, wherein the present invention is positioned by the positioning means so that the drive shaft does not idling. From the point of view, the present invention is extremely industrially useful; and it has not been found that the same or similar inventions appear in domestic and foreign publications or in public use, and have already met the positive and negative requirements stipulated by the Patent Law, and should be granted invention patents. The above description is only a preferred embodiment of the present invention, and when it is not possible to limit the implementation of the present invention by 11 1306074 / u, it is a replacement of the value of '#, or the patent application of the invention according to the present invention. The test of the second effect element decoration should still be covered by the patent of the present invention. =, culture and repair [A brief description of the schema] Figure 1: The stereoscopic appearance of the present invention. Figure 2 is a perspective exploded view of the present invention. _ M3: A schematic diagram of the switching device and the positioning device taken from the section 3-3 of Fig. 1 of the present invention. Table 4 is a schematic view showing the positioning of the positioning device taken from the 4_4 section line of Fig. 1 of the present invention. θ ′ FIG. 5 is a schematic view of the cross-sectional view taken by the section 5_5 of FIG. 1 in which the drive shaft is engaged with the second end of the engaging member. Figure 6 is a continuation of Figure 5 of the present invention, showing the action of winding the rope. Figure 7: Continuation of Figure 6 of the present invention, showing the action of winding the rope g. Figure 8: Schematic diagram of positioning of the positioning device of the present invention. . Figure 9 is a view showing the driving shaft of the present invention engaged with the first end of the engaging member. Figure 10 is a continuation of Figure 9 of the present invention, showing the movement of the rope. Figure 11: The continuation of Figure 9 of the present invention, showing the movement of the release rope. Attachment: Patent No. M288282 of China Patent Certificate No. Figure. [Description of main component symbols] 10 body 11 first wall surface 111 shaft hole 112 fixing hole 12 second wall surface 121 shaft hole 12 1306074
122 穿設孔 123 定位孔 124 13 頂面 20 固定座 21 螺栓 22 23 容部 231 第一空間 232 233 第三空間 30 驅動轴 31 驅動端 311 32 擋部 33 齒部 34 341 長條孔 35 限位端 351 36 限位件 40 切換裝置 41 切換件 411 412柩轉端 413 套件 42 43 連動件 44 嚙合件 441 442 第二端 443 齒部 444 445 凹缺 446 卡抵部 50 定位裝置 51 齒件 511 512抵擋部 513 穿設部 52 521 穿設部 522 定位部 523 53 彈性件 531 腳 532 533臂部 54 扳動件 541 542穿軸 543 定位軸 544 55 夾扣件 60 繩索 70 凹環 穿孔 第二空間 驅動孔 繞繩部 限位孔 切換端 彈性體 第一端 平端 齒部 定位件 固定部 彈性圈 扳動端 夾扣部 驅動件 13122 Threading hole 123 Locating hole 124 13 Top surface 20 Mounting seat 21 Bolt 22 23 Housing 231 First space 232 233 Third space 30 Drive shaft 31 Drive end 311 32 Stop 33 Tooth 34 341 Long hole 35 Limit End 351 36 Limiting member 40 Switching device 41 Switching member 411 412 Turning end 413 Kit 42 43 Linking member 44 Engagement member 441 442 Second end 443 Tooth portion 444 445 Notch 446 Key abutment portion 50 Positioning device 51 Tooth member 511 512 Resisting portion 513 through portion 52 521 through portion 522 positioning portion 523 53 elastic member 531 foot 532 533 arm portion 54 541 member 542 through shaft 543 positioning shaft 544 55 clip member 60 rope 70 concave ring perforation second space drive Hole winding portion limiting hole switching end elastic body first end flat end tooth positioning member fixing portion elastic ring pulling end clamping portion driving member 13