M280879 八、新型說明： 【新型所屬之技術領域】 本新型是關於一種鋸切輔助裝置，特別是指一種可輔 助導引鋸片之鋸切角度及方位的鋸切辅助裝置。 【先前技術】 料是一種可在被鋸工件上作切割的工具，隨著被鑛 工件材料的不同，据子之齒形A合 卞小也會不同，但無論是何種功 能的鑛子，其使用時通常是讓鑛片垂直於被錯工件，然後 直向地往下施力錯切，有時為了讓兩片垂直設置之被鑛工 件的交界處呈斜角狀態，鑛片的鋸切方向必需和地面間形 成一小於90度的夾角，以便在被鑛工件上切割出斜面。以 木工用的鑛片為例，此種斜面的鑛切方式在一般的操作上 很困難，原因疋鋸片在鑛切的初期必需创斷被鑛工件的纖 維’因此’在鋸切的初期鋸片很容易搖晃，此種情形再加 上錯切角度呈斜角時，更加深鑛切者施力及角度控制上的 困難度。本新型則是針對以上缺失作改良，以期提供一種 可以V引鋸片之鋸切角度及方位的鋸切輔助裝置。 【新型内容】 本新型之目的係在提供一種可準確地導引鋸片之鋸切 角度及鋸切方位的鋸切辅助裝置。 本新型之鋸切辅助裝置係可架靠在一被鋸工件之一被 鋸面上，並且輔助定位一鋸片的鋸切角度，其主要特徵在 於··該鋸切輔助裝置包含··一靠在被鋸工件上並具有_可 供鋸片進入之導引槽的導引機構，以及一用來定位該導引 M280879 槽之傾斜角度的角度定位機構。隨著改變並定位該導引槽 與被鑛面間的角度關係，可以改變並限位鑛片的傾斜角度 ’使鑛片之-鋸齒端更容易且精確的深人該被鑛工件，以 進行鑛切的動作。 本新型的另一特徵在於：該鋸切輔助裝置包含··一靠 在該被鋸工件之被鋸面上的架設座，以及一架設在該架設 座上並引導鑛片的鋸切方位的導引機構，纟中該架設座包 括：-擺放在被鋸面上的基準板、一靠設板，以及至少兩 支將靠設板以可拆解方式安裝在基準板下方的組裝件，上 述基準板具有兩第-側邊、兩垂直於第一側邊的第二側邊 、數個平行於第-側邊的第一組裝孔，以及數個平行於第 二側，的第二組裝孔，而該等組裝件即選擇地穿過該等第 -及第二組裝孔中的其中一組，並螺鎖在該靠設板上，藉 由改變靠設板的安裝位置，可以導引機構和被鋸工件的相 對方位’以達到改變鋸切方位的目的。 本新型之又一特徵在於：該鋸切辅助裝置包含··一架 =，以及用以限位鋸片之鋸切方向的導引機構，其中該 木认座包括·一擺放在被鋸面上的基準板，上述基準板設 土準孔以及至少兩個以該基準孔為中心但彼此間形 成一夾角關係的調整孔。而該導引機構包括一擺放在基準 板上的固定座、一具有一導引鋸片之導引槽的導引座、一 口疋件及凋整件，該固定座上設有兩個固定孔，其中一 固定孔對應該基準孔，並供固定件安裝，另一固定孔可選 擇地對應該等調整孔中的其中之―，並供該調整件以可拆 M280879 解地組裝在該等調整孔甲的其中之一上。藉調整件安裝在 不同的調整孔上，可以改變導引機構的安裝方向，以達到 改變鋸切方位的目的。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 乂下配δ參考圖式及較佳實施例的詳細說明中，將可清楚 的呈現。 參閱圖1、2、3,本新㈣切辅助裝置之一較佳實施例 係可架設在-被蘇工件u上，並且導引—#片12沿著一錯 刀方向13|g切’ 4被工件u可為金屬、木材或者塑勝板 等等需要被㈣的物件，其具有一朝上的被据自lu，而該 鋸片12具有一鄰近被鋸面lu的鋸齒端121。本新型之鋸 切辅助裝置則是包含··一架設座2、一導引機構3，以及一 角度定位機構4。 該架設座2可為塑膠、金屬等等的材質製造，包括： 一水平並貼設在被鋸工件U之被鋸面lu上的基準板21、 位在基準板21下方的靠設板u，以及數支將靠設板22 以可拆解方式安裝在基準板21下方的組裝件23。上述基準 板21具有兩平行於被鋸工件n的長度方向的第一側邊218 、兩個垂直於被鋸工件U之長度方向的第二側邊219、一 直向之基準孔211、數個以該基準孔211為中心並間隔設置 的調整孔212、213、214、數個鄰近其中一個第一側邊218 並直線排列的第一組裝孔210，以及兩個鄰近其中一個第二 側邊219並和其中一個第一組裝孔210直線排列的第二組 M280879 裝孔21A，而該等組裝件23為螺絲的形式，其可選擇地穿 過忒：第-或第二組裝孔21〇、21A中的其中一組，並且螺 ，在靠設板22的數個螺孔形式的組裝孔221上，以便將該 *設板22以可拆解的方式安裝在該基準板21的底面。 又該等基準孔211及調整孔2i2、2i3、214皆為螺孔的 形式、，其中該基準孔211與調整孔212間形成_條平行於第 一側邊219的水平連線215，而該調整孔213及基準孔211M280879 8. Description of the new model: [Technical field to which the new model belongs] The new model relates to a sawing auxiliary device, particularly a sawing auxiliary device that can assist in guiding the sawing angle and orientation of the saw blade. [Prior technology] Material is a tool that can be used to cut on the workpiece being sawed. Depending on the material of the workpiece being mined, the tooth shape A of the workpiece will be different, but no matter what the function is, When it is used, it is usually to make the ore piece perpendicular to the wrong workpiece, and then force it to cut downwards. Sometimes, in order to make the interface of the two pieces of the vertical workpiece beveled, the ore piece is sawed. The direction must form an angle of less than 90 degrees with the ground in order to cut the inclined surface on the workpiece being mined. Take wood ore slicing as an example. This kind of bevel cutting method is very difficult in general operation. The reason is that the saw blade must break the fiber of the workpiece in the early stage of mining. The film is easy to shake. In this case, when the miscut angle is oblique, it is more difficult for the miner to apply force and control the angle. The new model is to improve the above-mentioned defects, in order to provide a sawing auxiliary device that can cut the sawing angle and orientation of the V-guide saw blade. [New content] The purpose of this new model is to provide a sawing auxiliary device that can accurately guide the sawing angle and sawing direction of the saw blade. The novel sawing auxiliary device can lean against a sawed surface of one of the workpieces to be sawed, and assists in positioning the sawing angle of a saw blade. The main feature is that the sawing auxiliary device includes a ... A guide mechanism on the workpiece being sawed has a guide slot through which the saw blade can enter, and an angle positioning mechanism for positioning the inclination angle of the guide M280879 slot. With changing and positioning the angle relationship between the guide groove and the mining surface, the tilt angle of the ore piece can be changed and limited to make the -tooth end of the ore piece easier and more accurate to deeply mine the workpiece to be carried out. Mine cutting action. Another feature of the present invention is that the sawing auxiliary device includes a mounting seat leaning on the sawed surface of the sawed workpiece, and a guide mounted on the mounting seat and guiding the sawing direction of the ore piece. The guide mechanism, the erection base includes:-a reference plate placed on the sawn surface, a support plate, and at least two assemblies that detachably install the support plate below the reference plate. The reference plate has two first-side edges, two second-side edges perpendicular to the first-side edge, several first assembly holes parallel to the first-side edge, and several second assembly holes parallel to the second-side edge. , And the assemblies are selectively passed through one of the first and second assembly holes, and are screw-locked on the support plate, and the mechanism can be guided by changing the installation position of the support plate And the relative position of the workpiece being sawed 'to achieve the purpose of changing the sawing position. Another feature of the present invention is that the sawing auxiliary device includes a frame and a guide mechanism for limiting the sawing direction of the saw blade, wherein the wooden recognition seat includes a placement on the sawed surface The reference plate above is provided with a standard hole and at least two adjusting holes centered on the reference hole but forming an angle relationship with each other. The guide mechanism includes a fixed seat placed on a reference plate, a guide seat with a guide groove for guiding a saw blade, a mouthpiece, and a whole piece. The fixed seat is provided with two fixings. Hole, one of the fixing holes corresponds to the reference hole and is used for mounting of the fixing member, and the other fixing hole can optionally correspond to one of the adjustment holes-and the adjustment member can be disassembled and assembled in the detachable M280879. Adjust on one of the holes. By installing the adjustment parts on different adjustment holes, the installation direction of the guide mechanism can be changed to achieve the purpose of changing the sawing orientation. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the detailed description of the δ reference pattern and the preferred embodiment below. Referring to Figs. 1, 2, and 3, one of the preferred embodiments of the new cutting device can be mounted on the workpiece u and guided— # 片 12 切 13 | g cut in a wrong direction 13 The work piece u may be a metal, wood, or plastic board, etc., which needs to be hoarded. The work piece u has an upside down lu, and the saw blade 12 has a serrated end 121 adjacent to the saw surface lu. The new sawing auxiliary device includes: an erection base 2, a guide mechanism 3, and an angle positioning mechanism 4. The mounting base 2 can be made of plastic, metal, and other materials, and includes: a reference plate 21 horizontally attached to the sawn surface lu of the sawed workpiece U, and a supporting plate u located below the reference plate 21, And several assembly members 23 which detachably mount the support plate 22 below the reference plate 21. The reference plate 21 has two first sides 218 parallel to the longitudinal direction of the sawn workpiece n, two second sides 219 perpendicular to the longitudinal direction of the sawed workpiece U, a straight reference hole 211, The reference hole 211 is an adjustment hole 212, 213, 214 disposed at the center and spaced apart, a plurality of first assembling holes 210 adjacent to one of the first side edges 218 and aligned in a straight line, and two adjacent one of the second side edges 219 and A second group of M280879 mounting holes 21A aligned in line with one of the first assembling holes 210, and the assembling pieces 23 are in the form of screws, which can optionally pass through 忒: the first or second assembling holes 21, 21A One of the groups is screwed on the assembly holes 221 in the form of several screw holes against the setting plate 22, so that the * setting plate 22 can be detachably mounted on the bottom surface of the reference plate 21. The reference holes 211 and the adjustment holes 2i2, 2i3, and 214 are in the form of screw holes. The reference hole 211 and the adjustment hole 212 form a horizontal line 215 parallel to the first side 219. Adjustment hole 213 and reference hole 211
門开v成k第—斜連線216，此第一斜連線2丨6與水平連線 215間的夾角為3G度，而該調整孔214與基準孔hi間形 成-第二斜連線217，此第二斜連線217與水平連線出間 的夾角為45度。 本新型之導引機構3包括 >平貼在基準板21上的固 定座31、一可相對於固定座31樞擺的導引座32、至少一 支將導引座32樞設在該时座31上的銷軸％、—固定件 34，以及一調整件35。在設計上，本新型亦可利用例如門 板之後鈕來組裝該導引座32及固定座31。又該固定座Η 上具有一朝向基準板21之底面311、一與底面311間隔之 頂面312，以及兩個貫穿頂面312及底面311的固定孔 314。其中固定孔313對應基準孔211，而固定孔314可 選擇地對應該等調整孔212、213、214中的其中之一。 本新型之導引座32具有兩片彼此間隔並沿著鋸切方向 13延伸的導壁321、一介於該等導壁321間的導引槽322 , 以及一銜接在該等導壁321頂端間的連接壁323，其中該導 引槽322具有一朝向該被鋸工件u之開口，而鋸片12即安 M280879 裝在該導引槽322内，且鋸片12的鋸切端121並突出於該 開口0 參閱圖1、2、4’本新型之角度定位機構4包括：兩支 左右間隔並對稱地架設在導引機構3之導引座32及固定座 3 1旁的擺臂單元40，每個擺臂單元4〇皆具有：一第一擺 臂41、一第二擺臂42、一將擺臂41、42以可樞擺方式連 結的結合件43，以及兩支樞軸44，在本實施例中該結合件 43是一支鉚釘，但實際的實施並不以鉚釘為限。The door opens v into a k-th oblique line 216. The angle between the first oblique line 2 丨 6 and the horizontal line 215 is 3G degrees, and the adjustment hole 214 forms a second oblique line with the reference hole hi. 217, the angle between the second oblique line 217 and the horizontal line is 45 degrees. The guide mechanism 3 of the present invention includes a fixing base 31 flatly attached to the reference plate 21, a guide base 32 pivotable relative to the fixing base 31, and at least one pivot base 32 The pin 31 on the seat 31, the fixing member 34, and an adjusting member 35. In design, the present invention can also use the rear button of the door panel to assemble the guide base 32 and the fixed base 31, for example. The fixing base Η has a bottom surface 311 facing the reference plate 21, a top surface 312 spaced from the bottom surface 311, and two fixing holes 314 penetrating the top surface 312 and the bottom surface 311. The fixing hole 313 corresponds to the reference hole 211, and the fixing hole 314 optionally corresponds to one of the adjustment holes 212, 213, and 214. The guide base 32 of the present invention has two guide walls 321 spaced apart from each other and extending along the sawing direction 13, a guide groove 322 interposed between the guide walls 321, and a link between the top ends of the guide walls 321. The connecting wall 323, wherein the guide groove 322 has an opening facing the workpiece u to be sawed, and the saw blade 12 is installed in the guide groove 322, and the sawing end 121 of the saw blade 12 protrudes from the Opening 0 Refer to Figures 1, 2, and 4 'The angular positioning mechanism 4 of the present invention includes two swing arm units 40 spaced left and right and symmetrically mounted on the guide base 32 and the fixed base 31 of the guide mechanism 3, each Each of the swing arm units 40 has a first swing arm 41, a second swing arm 42, a joint 43 that pivotably connects the swing arms 41, 42 and two pivot shafts 44. In the embodiment, the coupling member 43 is a rivet, but the actual implementation is not limited to the rivet.
本新型之第一擺臂41包括一底端樞設在固定座31上 的支點部411，以及一鄰近導引座32且為圓板造型的卡合 邛412,上述卡合部412具有一位於中心並供該結合件 穿過的中心孔413，以及一朝向第二擺臂42的卡合面々μ 心孔413$中心，在該卡合面414上設置數個徑 向延伸的卡槽415，兩兩相鄰之卡槽415間則為—個個相對 突起的突夸416，以一通過該中心孔413之水平連線“Ο為 基準’該等卡肖415與水平連線彻間㈣角關係以 針方向排列，其分別為：15度 度。而該第二擺臂42亦包括？度、6〇度及75 丌包括支點部421及一卡合邱 2 ,於卡合部似上同樣具有—供結合件^ 孔423,以及一朝向第一擺臂4ι的卡合自似 似上突出-個可铁人於該等在^面 條425。 Y扪具中之一内的卡 者預^來％ ’本新型之1^切辅助裝置在使用時，且使用 者預備在被鋸工件丨丨上裁 使用 裁刀出一個60度斜角的斜面時，乃 M280879 調整第一及第二擺臂41、42間的夾角關係，使導引座& 與固定座3 1間形成60度的夾角關係，而該鋸片12是放入 導引槽322之後，使固定座31上的固定孔313、314分別 對應該基準孔211及調整孔212，然後利用固定件34及調 整件3 5加以固定，再將該組合體擺放在被鑛工件丨1上，且 使架設座2的靠設板22靠向該被鋸工件π的一側形成定位 當靠設板22安裝在基準板21下方，且沿著被鋸工件 11的長度方向延伸，而使用者操作該鋸片12沿著鋸切方向 13往復運動時，該鋸片12的鋸齒端122即可受到導引，並The first swing arm 41 of the present invention includes a fulcrum portion 411 pivotally mounted on the fixed base 31 at the bottom end, and a circular plate-shaped engaging bracket 412 adjacent to the guide base 32. The engaging portion 412 has a A central hole 413 at the center for the coupling member to pass through, and an engaging surface 々μ center hole 413 $ facing the center of the second swing arm 42, a plurality of radially extending engaging grooves 415 are provided on the engaging surface 414, Between the two adjacent card slots 415 is a relatively protruding protrusion 416, which is based on a horizontal line "0" passing through the central hole 413. The relationship is arranged in the needle direction, which are: 15 degrees. The second swing arm 42 also includes? Degrees, 60 degrees, and 75 degrees. It includes a fulcrum portion 421 and an engaging Qiu 2 which is similar to the engaging portion. It has a hole 423 for the coupling piece, and an engaging piece 4m facing the first swing arm. It can seem to protrude from the top. An iron man can wait for the card in one of the noodles 425. Y % 'This new type of 1 ^ cutting auxiliary device is in use, and the user is ready to cut on the workpiece being sawed using a cutter to create a 60-degree bevel. M280879 adjusts the angle relationship between the first and second swing arms 41 and 42 so that the guide seat & and the fixed seat 31 form an angle relationship of 60 degrees, and the saw blade 12 is placed in the guide groove 322 After that, the fixing holes 313 and 314 on the fixing base 31 correspond to the reference hole 211 and the adjusting hole 212, respectively, and then are fixed by the fixing member 34 and the adjusting member 35, and then the assembly is placed on the workpiece to be mined. The support plate 22 of the mounting base 2 is positioned toward the side of the workpiece to be sawn when the support plate 22 is installed below the reference plate 21 and extends along the length direction of the workpiece 11 to be sawed. When the operator operates the saw blade 12 to reciprocate in the sawing direction 13, the sawtooth end 122 of the saw blade 12 can be guided, and
逐漸地往被鋸工件U的被鋸面U1深入，由於該鋸片12的 傾斜角度受到限制，故無論操作者的錫切技術好壞，都可 輕易的在㈣卫件U上切出斜度符合需要的斜面。在錐切 的過程中，由於鋸片12的鑛齒端121只要伸入被鑛工件^ 之被鑛面U1 —段㈣後，就可穩定角度，因此，本新型在 使用時只要在初期料即可，並不需要全程導引。 參閱圖4、5、6,當本新型欲調整鋸切之角度時 扳動β亥等第-及第二擺臂41、42，即可改變固定座Μ盘導 二:2:的相對關係，圖5是顯示鑛切角度改變成3。、度 該調整件35並將固定件34放鬆，然後 = 與架設座2間的對應關係，之後再螺緊固料構3 整件h螺鎖在該等調整孔213、214中的其中之—將调 可改變該導引擁娃 上’即 械構3與架設座2間的方位關係。亦即，當 10 M280879 調整件35螺裝在調整孔213上時，該導引槽似係與被鑛 工件11的側邊呈3 〇度夹角，而當調整件3 5螺裝在調整孔 214上時，該導引槽322係與被鋸工件n的第二側邊 呈45度夾角，故本新型該鋸切辅助裝置不僅可以輔助導引 錯片12的斜切角度’也可以改變㈣的方位。 二閱圖1、7，本新型在使用時也可以將組裝件23拆解 下來，然後將靠設板22移到平行於第二側邊219的旁邊， :將該等組裝件23穿過第二組裝孔21A及直線對應的一個 第一組裝孔210，並螺鎖在靠設板22的組裝孔221内，即 可改义4罪设板22的位置，使整個鋸切辅助裝置能夠靠設 在被鑛工件11的—個長邊旁，並引導鋸片12沿著該被鑛工 件11的長度方向作鋸切。 准X上所述者，僅為本新型之較佳實施例而已，當不 月b以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及。兒明内谷所作之簡單的等效變化與修飾，皆仍屬本 新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋本新型鑛切辅助裝置之一較佳實施例的立體分 解圖； 圖2是該較佳實施例的一使用狀態侧視圖·， 二圖3是該較佳實施例之一未完整的俯視圖，單獨顯示 該錯切辅助裝置的一架設座； -上圖4是該較佳實施例的一未完整立體分解圖，單獨顯 不该銀切輔助裝置的一角度定位機構； 11 M280879 圖5是一類似圖2的側視圖，圖中該鋸切輔助裝置之 一導引機構的角度不同於圖2 ; 圖6是該較佳實施例之一立體分解圖，顯示該導引機 構改變方位時的狀態；及 圖7是該較佳實施例的又一立體分解圖，圖中該架設 座之一靠設板的安裝位置不同於圖1的狀態。Gradually penetrate deeper into the sawed surface U1 of the sawed workpiece U. Since the inclination angle of the saw blade 12 is limited, the inclination can be easily cut out on the guard piece U regardless of the operator's tin cutting technique. Meet the needs of the bevel. In the process of taper cutting, since the tine end 121 of the saw blade 12 can be inserted into the ore surface U1 of the workpiece to be mined, the angle can be stabilized. Therefore, when the new model is used, the initial material is required. Yes, there is no need for full guidance. Referring to Figs. 4, 5, and 6, when the new type of the saw is to adjust the sawing angle, the first and second swing arms 41 and 42 of βHai can be adjusted to change the relative relationship of the guide M2 of the fixed seat 2: 2: Fig. 5 shows that the cutting angle is changed to 3. 1. Adjust the adjusting member 35 and loosen the fixing member 34, then = the corresponding relationship with the erection seat 2, and then screw the fastening member 3 together and screw the entire piece of h in these adjustment holes 213, 214— The tuning can change the azimuth relationship between the guiding supporter, namely, the mechanical structure 3 and the erection seat 2. That is, when the 10 M280879 adjustment member 35 is screwed on the adjustment hole 213, the guide groove seems to be at an angle of 30 degrees with the side of the workpiece 11 to be mined, and when the adjustment member 35 is screwed on the adjustment hole At 214, the guide groove 322 is at an angle of 45 degrees with the second side of the workpiece n to be sawed. Therefore, the sawing auxiliary device of the novel type can not only guide the chamfering angle of the guide piece 12, but also can change ㈣ Location. Secondly, referring to Figures 1 and 7, the new model can also disassemble the assembly 23 during use, and then move the support plate 22 to the side parallel to the second side 219, and pass the assembly 23 through the first The two assembling holes 21A and one straight corresponding first assembling hole 210 are screw-locked in the assembling hole 221 of the setting plate 22, so that the position of the four setting plate 22 can be redefined, so that the entire sawing auxiliary device can be set. Next to one long side of the workpiece 11 to be mined, the saw blade 12 is guided to cut along the length direction of the workpiece 11 to be mined. The ones mentioned in quasi-X are only the preferred embodiments of the new model, and the month b will be used to limit the scope of the implementation of the new model. The simple equivalent changes and modifications made by Erming Naigu are still covered by the new patent. [Brief description of the drawings] Fig. 1 is an exploded perspective view of a preferred embodiment of the new type of mining assistance device; Fig. 2 is a side view of a use state of the preferred embodiment; One of the examples is an incomplete top view, showing an erection stand of the miscutting auxiliary device separately;-Figure 4 above is an incomplete exploded view of the preferred embodiment, showing an angle of the silvercutting auxiliary device alone. Positioning mechanism; 11 M280879 Fig. 5 is a side view similar to Fig. 2, the angle of a guide mechanism of the sawing auxiliary device is different from that of Fig. 2; Fig. 6 is an exploded perspective view of the preferred embodiment, showing FIG. 7 is another three-dimensional exploded view of the preferred embodiment, in which the mounting position of a mounting plate of one of the mounting bases is different from the state of FIG. 1.
12 M28087912 M280879
【主要元件符號說明】 11 被鋸工件 111被鋸面 12 鋸片 121鋸齒端 13 鋸切方向 2 架設座 21 基準板 211基準孔 212調整孔 2 13調整孔 2 14調整孔 215水平連線 2 1 6第一斜連線 2 1 7第二斜連線 2 1 8第一侧邊 2 19第二側邊 21 0第一組裝孔 21A第二組裝孔 22 靠設板 221組裝孔 23 組裝件 3 導引機構 31 固定座 311底面 312頂面 3 13固定孔 3 2 導引座 321導壁 322導引槽 323連接壁 33 銷軸 34 固定件 35 調整件 4 角度定位機構 40 擺臂單元 41 第一擺臂 410水平連線 411支點部 412卡合部 413中心孔 414卡合面 415卡槽 416突峰 42 第二擺臂 421支點部 422卡合部 13 M280879 423中心孔 424卡合面 425卡條 43 結合件 44 樞轴[Description of symbols of main components] 11 Work piece being sawed 111 Face 12 Saw blade 121 Saw end 13 Saw direction 2 Mounting base 21 Reference plate 211 Reference hole 212 Adjustment hole 2 13 Adjustment hole 2 14 Adjustment hole 215 Horizontal connection 2 1 6First oblique line 2 1 7Second oblique line 2 1 8First side 2 2Second side 21 0First assembly hole 21A Second assembly hole 22 Support plate 221 Assembly hole 23 Assembly 3 Guide Leading mechanism 31 fixing base 311 bottom surface 312 top surface 3 13 fixing hole 3 2 guide base 321 guide wall 322 guide groove 323 connection wall 33 pin 34 fixing member 35 adjusting member 4 angle positioning mechanism 40 swing arm unit 41 first swing Arm 410 horizontal line 411 fulcrum portion 412 engagement portion 413 center hole 414 engagement surface 415 engagement slot 416 burr 42 second swing arm 421 fulcrum portion 422 engagement portion 13 M280879 423 center hole 424 engagement surface 425 clip 43 Union 44 pivot