1297397 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學器材組件’特別是指一種可 固定瞳距的雙筒望遠鏡。 ' 【先前技術】 如圖1所示，一般雙筒望遠鏡10具有一中心座n、分 別呈可移動地安裝於該中心座u並彼此遠離或相對靠近： -左殼體12與一右殼體13、分別安裝固定於該左殼體12 與該右殼體13的二目鏡組14、二物鏡組15，及一設置於該 中心座11用以供一腳'架（圖未示）螺鎖的鎖孔16。 人 由於每一個使用者的雙眼瞳距不同’所以使用時必須 先調整該左殼體12與該右殼體13的相對位置，等到調整到 該二目鏡組14對準使用者的雙眼，使用者就可以藉由該雙 筒望遠鏡10觀看目標物。 忒雙绮望运鏡10雖然具有上述使用功能，但是因為該 左殼體12與該右殼體13之間並無定位設計，容易因擠壓碰 撞而產生位置游離，所以使用者必須常常·重新調整該左殼體 12與該右殼體13的位置，導致有使用較不方便的缺失。 【發明内容】 因此’本發明之目的是在提供一種可以使左殼體與右 殼體獲得定位、使用較方便的可固定瞳距的雙筒望遠鏡。 本發明可固定瞳距的雙筒望遠鏡包含一中心座、分別 安裝於該中心座的左、右側並藉由一調整單元同步移動的 一左殼體與一右殼體、分別安裝於該左殼體、該右殼體的 1297397 二目鏡組與二物鏡組，及一安裝在該中心座、該左殼體、 該右殼體之間的定位單元。 該中心座包括一承塊。 該定位單元包括一定位座及二連動組合體，該定位座 是安裝固定於該承塊並位於該左殼體與該右殼體外，該二 連動組合體疋分別螺鎖於該定位座並在相對於該左殼體與 該右殼體的一鬆釋位置與一迫緊位置之間移動。1297397 IX. Description of the Invention: [Technical Field] The present invention relates to an optical device assembly, particularly to a binocular with a fixed lay length. [Prior Art] As shown in FIG. 1, a general binocular 10 has a center base n movably mounted to the center block u and away from or relatively close to each other: - a left casing 12 and a right casing 13. The two eyepiece groups 14 and the two objective lens groups 15 fixed to the left casing 12 and the right casing 13 are respectively mounted, and a center frame 11 is disposed for the one foot frame (not shown) to be screwed The keyhole 16 is. Since the distance between the eyes of each user is different, the relative position of the left housing 12 and the right housing 13 must be adjusted before use, and the two eyepieces 14 are aligned to the user's eyes. The user can view the object by the binoculars 10. Although the double vision mirror 10 has the above-mentioned use function, since there is no positioning design between the left casing 12 and the right casing 13, it is easy to be dislocated due to the crushing collision, so the user must frequently re Adjusting the position of the left housing 12 and the right housing 13 results in a less convenient use of the missing. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a binocular that can position a left and a right housing and that can be used with a convenient fixed distance. The double-lens telescope with fixed distance of the present invention comprises a center seat, a left shell and a right shell respectively mounted on the left and right sides of the center seat and synchronously moved by an adjusting unit, respectively mounted on the left shell The body, the 1297397 two-eye lens group and the two objective lens group of the right casing, and a positioning unit mounted between the center seat, the left casing and the right casing. The center seat includes a block. The positioning unit includes a positioning base and a two-linking assembly, the positioning base is mounted and fixed to the bearing block and located outside the left housing and the right housing, and the two interlocking assembly bodies are respectively screwed to the positioning seat and are respectively Moving between a release position and a pressing position of the left and right housings.
藉由上述組成’當將該左殼體、該右殼體調整到使用 位置，再操作該二連動組合體使其位於該迫緊位置，就可 以使5亥左设體、该右殼體獲得定位，相對固定該雙筒望遠 鏡的瞳距，使本發明具有使用較方便的特性。 【實施方式】 本發明可固定瞳距的雙筒望遠鏡前述以及其他技術内 容、特點與功& ’在以下配合參考圖式之一較佳實施例的 詳細說明中，將可清楚的明白。 在詳細說明之前要注意的是，在整篇說明書中所使用 的相對位置用語，如“前，，、“後”、 以使用者的使用方位為基準。 如圖2、3所示，分別是一仰視立體圖及其分解立 圖，本發明▼固定瞳距的雙筒望遠鏡該較佳實施例包含 中心座20, 一安裝於該中心座2〇的調整單元，分別 結於該調整單元30的一左殼體4〇盥— 一 右威體50，分別. 裝於該左殼體40、該右殼體50的-目广 巧一目鏡組60與二物鏡、 70,及一安裝在該中心座2〇、該左崎 及"又體4〇、該右殼體ί 1297397 之間的定位單元80。 如圖3、4、5所示，該中心座2〇為一略呈U形的座 體，具有一沿一前後方向擺設的承塊21，自該承塊21的二 反向端朝同向彎設並相互平行的二翼塊22、23，及一貫穿 該承塊21並鄰近該翼塊22的插孔24。 該調整單元30包括一沿一左右方向固置於該承塊21 的導執3 1，分別滑設於該導執3 1並位於該承塊21的左、 右側的一左滑塊3 2、一右滑塊3 3 ’ 一呈可轉動地極没於该 承塊21的齒輪34，分別與該齒輪34嚙合並位於二反向側 的一左齒條35與一右齒條i 36，分別固結該左齒條35、該 右齒條36的一左鎖塊37與一右鎖塊38，及一鎖設於該承 塊21用以使該齒輪34、該左齒條35與該右齒條36被限位 的蓋板39。 該左殼體40包括相互間隔的一頂塊41與一底塊42， 及一連結該頂塊41與該底塊42的連結塊43，該頂塊41與 该底塊42及該連結塊43並配合界定出一左容室44用以容 I該左滑塊32、該左鎖塊37與該中心座20的局部；進一 步地，該左殼體40的頂塊41同時與該左滑塊32、該左鎖 塊37鎖結，如此，當拉動該左殼體4〇的時候，藉由該左 滑塊32滑設於該導軌31，該左殼體4〇就能順暢地移動。 較佳地，同時參圖2，該左·殼體4〇更包括一左飾板45 ，是鎖結於該底塊42用以遮掩該左滑塊32、該導執3丨與 該左鎖塊37。 該右殼體50包括相互間隔的一頂塊51與一底塊52, 1297397 及一連結該頂塊51與該底塊52的連結塊53，該頂塊51與 該底塊52及該連結塊53並配合界定出一右容室54用以容 裝該右滑塊33、該右鎖塊38與該中心座20的局部；，進一 步地，該右殼體50的頂塊51同時與該右滑塊33、該右鎖 塊38鎖結，如此，當拉動該右殼體50的時候，藉由該右 滑塊3 3滑設於該導軌3 1 ’該右殼體5 0就能順暢地移動。 較佳地，同時參圖2，該右殼體50更包括一右飾板55 ，是鎖結於該底塊5 2用以遮掩該右滑塊3 3、該導執3 1與 該右鎖塊38。 值得說明的是，當使用者兩手分別握持該左殼體4〇、 該右殼體50，且施力於該左殼體40與該右殼體5〇時，藉 由该齒輪34與該左齒條35、該右齒條36的組配設計，可 以使該左齒條35、該右齒條36同步移動，相對地該左殼體 40、4右设體50亦能同步移動而產生彼此遠離或相對靠近 的效果。 塊_ 43 該二目鏡組60是分別安裝固定於該左殼體4()的連結 的一前壁431、該右殼體 5〇的連結塊53的一前壁 塊43 孩一物鏡組70是分別安裝固定於該左殼體40的連結 的一後壁432、該右殼體 50的連結塊53的一後壁 如圖6 7、8所示，By the above composition 'When the left casing and the right casing are adjusted to the use position, and the two interlocking assemblies are operated to be in the pressing position, the left housing and the right housing can be obtained. Positioning and relatively fixing the distance of the binoculars make the invention more convenient to use. [Embodiment] The foregoing and other technical contents, features, and functions of the present invention can be clearly understood from the following detailed description of a preferred embodiment of the accompanying drawings. Before the detailed description, it should be noted that the relative positional terms used in the entire specification, such as “pre,, and “post”, are based on the user's orientation. As shown in Figures 2 and 3, respectively. A bottom view of the perspective view and the exploded view thereof, the preferred embodiment of the present invention includes a center mount 20, and an adjustment unit mounted on the center block 2〇, respectively attached to one of the adjustment units 30. The left housing 4 〇盥 - a right power body 50, respectively, is mounted on the left housing 40, the right housing 50 - a wide eyepiece set 60 and two objective lenses, 70, and one mounted in the center seat 2〇, the Zuozaki and the body 4, the positioning unit 80 between the right housing ί 1297397. As shown in Figures 3, 4, 5, the center seat 2 is a slightly U-shaped seat The body has a bearing block 21 disposed in a front-rear direction, two wing blocks 22, 23 which are bent from the opposite ends of the bearing block 21 and which are parallel to each other and which are parallel to each other and which are adjacent to the bearing block 21 and adjacent thereto. The insertion hole 24 of the wing block 22. The adjustment unit 30 includes a guide 3 1 fixed to the bearing block 21 in a left-right direction, and is respectively slidably disposed on the guide a left slider 3 2 , a right slider 3 3 ′ located on the left and right sides of the block 21 , and a gear 34 rotatably absent from the bearing block 21 , respectively meshing with the gear 34 And a left rack 35 and a right rack i 36 on the opposite sides of the second side, respectively consolidating the left rack 35, a left lock block 37 and a right lock block 38 of the right rack 36, and a lock The cover block 21 is configured to cover the gear 34, the left rack 35 and the right rack 36. The left casing 40 includes a top block 41 and a bottom block 42 spaced apart from each other. And a connecting block 43 connecting the top block 41 and the bottom block 42. The top block 41 and the bottom block 42 and the connecting block 43 cooperate to define a left chamber 44 for receiving the left slider 32. a portion of the left locking block 37 and the center block 20; further, the top block 41 of the left housing 40 is simultaneously locked with the left slider 32 and the left locking block 37, such that when the left housing is pulled When the left slider 32 is slidably disposed on the guide rail 31, the left housing 4〇 can be smoothly moved. Preferably, referring to FIG. 2, the left housing 4 further includes a The left fascia 45 is locked to the bottom block 42 for The left slider 32, the guide 3丨 and the left lock block 37 are covered. The right housing 50 includes a top block 51 and a bottom block 52 spaced apart from each other, 1297397 and a connecting the top block 51 and the bottom block The connecting block 53 of the 52, the top block 51 and the bottom block 52 and the connecting block 53 cooperate to define a right chamber 54 for receiving the right slider 33, the right locking block 38 and the center seat 20. Further, the top block 51 of the right housing 50 is simultaneously locked with the right slider 33 and the right lock block 38, so that when the right housing 50 is pulled, the right slider 3 is 3 sliding on the guide rail 3 1 'the right housing 50 can smoothly move. Preferably, referring to FIG. 2, the right housing 50 further includes a right trim panel 55 that is locked to the bottom block 52 for covering the right slider 33, the guide 3 1 and the right lock. Block 38. It should be noted that when the user holds the left casing 4 〇 and the right casing 50 respectively and applies the force to the left casing 40 and the right casing 5 , the gear 34 and the The combination of the left rack 35 and the right rack 36 allows the left rack 35 and the right rack 36 to move synchronously, and the left housing 40 and the right housing 50 can also be moved synchronously. The effect of being away from each other or relatively close. Block _ 43 The second eyepiece group 60 is a front wall 431 to which the connection of the left casing 4 () is attached, and a front wall block 43 of the connection block 53 of the right casing 5 . A rear wall 432 fixed to the joint of the left casing 40 and a rear wall of the joint block 53 of the right casing 50 are respectively shown in FIGS.
’该疋位單元80包括一定位座 並可在相對於該左殼體4Ό、該 一迫緊位置之間移動的二連動組 1297397 合體8 5。 該定位座81具有一本體82及一插柱83。 •該本體82具有呈反向的一底面821與一頂面822，自 该頂面822朝向該底面821凹設並相互間隔的二第一容置 槽823，及分別連通該頂面822與該底面821並位於該二第 一容置槽823内的二螺孔824。 。亥插柱83疋自該本體82的頂面822延伸並位於該二 第一谷置槽823之間，且用以插入鎖固於該中心座20的插 • 孔24(見圖4 )。 較佳地，該定位座81更具有一自該底面821設置並位 於.亥插柱83内的腳架螺孔84，用以供一腳架（圖未示）鎖結 ' 〇 每一連動組合體85各具有一螺鎖於該螺孔824的螺鎖 件86, 一組設於該螺鎖件86並位於該容置槽823内的壓置 塊87，及一套結於該壓置塊87的迫緊環88。 籲 言亥螺鎖件86具有呈反向的一底面861與一頂面如， 連…孩底面861與该頂面862並設置有螺紋以螺入該螺孔 824的環周面863, 一設置於該底面861供使用者的手握持 的握條864, 一自該頂面862沿一轴向延伸的中心柱泌， 及一自該中心柱865擴大徑度成型的偏心塊866。 該壓置塊87具有呈反向的一底面871與一頂面872， 自該頂面872沿-軸向成型並且同心的—外凸帛⑺與一 内凸％ 874 ’及一連通該底S 871與該頂Φ 872並位於該内 凸環874内且與該偏心塊866為相同形狀的偏心孔仍，該 9 1297397 _、面872與4外凸環873及該内凸環並配合形成 —容置槽8 7 6。 田"亥壓置塊87藉由該偏心孔875套穿過該偏心塊866 :再將該壓置塊87轉動-角度，該偏心塊866就可與該偏 、孔875錯位，進而使該壓置塊87與該螺鎖件86相互結 合不脫離。 ' °The clamping unit 80 includes a positioning seat and is splicable 8 5 in a two-linking group 1297397 that is moved between the forced position relative to the left housing 4Ό. The positioning base 81 has a body 82 and a post 83. The main body 82 has a bottom surface 821 and a top surface 822 opposite to each other. The first receiving groove 823 is recessed and spaced from the bottom surface 821 toward the bottom surface 821, and the top surface 822 is connected to the top surface 822. The bottom surface 821 is located in the two screw holes 824 in the two first receiving grooves 823. . The ejector pin 83 extends from the top surface 822 of the body 82 and is located between the two first valley slots 823 for inserting a pin hole 24 (see FIG. 4) that is locked to the center block 20. Preferably, the positioning base 81 further has a tripod screw hole 84 disposed from the bottom surface 821 and located in the spigot 83 for locking a tripod (not shown) 〇 each linkage combination The body 85 has a screw member 86 screwed to the screw hole 824, a set of pressing blocks 87 disposed on the screw member 86 and located in the receiving groove 823, and a set of the pressing block 87 tight ring 88. The marine screw lock 86 has a bottom surface 861 opposite to a top surface, such as a bottom surface 861 and a top surface 862, and is provided with a thread to be screwed into the circumferential surface 863 of the screw hole 824. A grip 864 for holding the hand of the user on the bottom surface 861, a central column extending from the top surface 862 in an axial direction, and an eccentric block 866 extending from the center post 865. The pressing block 87 has a bottom surface 871 and a top surface 872 which are opposite to each other. The top surface 872 is axially formed and concentric - the outer convex ridge (7) and the inner convex portion 874 ' and one connected to the bottom S 871 and the top Φ 872 are located in the inner convex ring 874 and have the same shape as the eccentric block 866, the eccentric hole is still formed, and the 9 1297397 _, the surface 872 and the 4 outer convex ring 873 and the inner convex ring are combined to form - The receiving groove is 8 7 6 . The field quotient 87 is passed through the eccentric block 866 by the eccentric hole 875: the embossing block 87 is rotated and angled, and the eccentric block 866 can be misaligned with the eccentricity and the hole 875, thereby The pressing block 87 and the screw lock 86 are coupled to each other without being separated. ' °
置 面 忒迫緊裱88為一由橡膠製成且具備彈性的套環，是塞 固定於該第二容置槽876 Θ，具有呈反向的一貼觸該頂 872的底面881，及一凸出該外凸環873、該内凸環⑽ 的頂面882。 如圖8所不’使甩時，該二迫緊環88的頂面882分別 面對該左殼體40、右殼體50的底塊42、52，且位於該鬆 釋位置。The pressing surface 88 is a rubber-made elastic ring, and the plug is fixed to the second receiving groove 876, and has a reverse bottom surface 881 contacting the top 872, and a The outer convex ring 873 and the top surface 882 of the inner convex ring (10) are protruded. The top surface 882 of the two pressing ring 88 faces the bottom blocks 42, 52 of the left and right housings 40, respectively, as shown in Fig. 8, and is located at the release position.
如圖9所示，當使用者調整好該左殼體4〇肖該右殼體 50的位置後，只需分別手握該二螺鎖件86的握條864並順 向轉動，就可以使該二螺鎖件86驅動該二壓置塊87與該 二迫緊環88朝向該左殼體40、該右殼體50移動，進而使 該二迫緊環88受該左殼體40、該右殼體5〇的底塊42、兄 與該二壓置塊87的夹置產生壓縮變形，同時藉由摩擦作用 使該左殼體40、該右殼體50獲得定位，終達成固定該左殼 體40與該右殼體50的相對位置，也就是固定該雙筒望遠 鏡的使用瞳距的目的，此時’該二迫緊環88是位$該迫緊 位置。 再如圖8所示 當要重新調整該雙筒望遠鏡的瞳距 10 1297397 只需反向轉動該二螺鎖件86，就可以使該二螺鎖件86帶動 該二壓置塊87朝向遠離該左殼體4〇、該右殼體5〇的方向 移動’進而使該二迫緊# 88鬆放該左殼體糾、該右殼體 50而回復到該鬆釋位置，此時，就可以重新調整該左殼體 40、該右殼體50的位置。 歸納上述，本發明可固定瞳距的雙筒望遠鏡具有如下 所述之功效及優點，故確實能達成發明目的·· 可以藉由該定 次該左殼體40As shown in FIG. 9, after the user adjusts the position of the left casing 4 to the right casing 50, it is only necessary to manually hold the grip 864 of the two screw locks 86 and rotate in the forward direction. The two screw-locking members 86 drive the two pressing blocks 87 and the two pressing ring 88 to move toward the left casing 40 and the right casing 50, so that the two clamping rings 88 are received by the left casing 40. The bottom block 42 of the right casing 5, the clamping of the brother and the two pressing blocks 87 generates a compression deformation, and at the same time, the left casing 40 and the right casing 50 are positioned by friction, and the left is fixed. The relative position of the housing 40 to the right housing 50, that is, the purpose of securing the use of the binoculars, is that the two tensioning rings 88 are in the position of the tightening position. As shown in FIG. 8 , when the distance between the binoculars 10 1297397 is to be readjusted, the two screw locks 86 can be reversely rotated, so that the two screw locks 86 can drive the two press blocks 87 away from the The left housing 4〇, the direction of the right housing 5〇 moves, and the second pressing unit 88 releases the left housing and the right housing 50 to return to the releasing position. The position of the left casing 40 and the right casing 50 is readjusted. In summary, the binoculars with fixed distance of the present invention have the following advantages and advantages, so that the object of the invention can be achieved by the present invention.
因為本發明該左殼體4〇與該右殼體5〇 位單το 80獲得固定，所以使用者只需調整一 與=右殼體50的位置’也就是只f調整_次該雙筒望遠鏡 的瞳距，就可以將該使輯距㈣，不會因㈣碰撞而產 生位置游離，使本發明具有使用較方便的功效及優點。 ▲惟以上所述者，僅為本發明之一較佳實施例而已，當 不能以此限定本發明實施之範圍，即大凡依本發明申請^ 利範圍及發明說明書内容所作之簡單的等效變化與修：， 皆應仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是習用一種雙筒望遠鏡的一立體圖； 圖2是本發明可固定瞳距的雙筒望遠鏡一較佳實施例 的一仰視立體圖； 、 士圖3是該較佳實施例的一仰視分解平面圖，說明一左 殼體、一右殼體與一調整單元； 工 圖4是該較佳實施例的一局部分解 』,刀胛1肢圖，說明該調 整早元與一定位單元； 11 1297397 圖5是該較佳實施例的一俯視分解平面圖，說明該左 殼體、該右殼體與該調整單元； ^圖6是該較佳實施例的一仰視暨局部分解立體圖，說 明該定位早元， 圖7是該較佳實施例的一俯視暨局部分解立體圖，說 明該定位單元；’ 圖8是一該較佳實施例的一組合剖視圖，說明該定位 單元的二連動組合體位於一鬆釋位置；及 圖9是一類似於圖8的視圖，說明該二連動組合體位 於一迫緊位置。 12 1297397Because the left casing 4〇 and the right casing 5 of the present invention are fixed by the positioning unit το 80, the user only needs to adjust the position of the right and the right housing 50, that is, only f adjusts the binoculars. The interpupillary distance can be used to make the position distance (4), and the position is not released due to the (4) collision, so that the invention has the advantages and advantages of being convenient to use. The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change made by the scope of the invention and the contents of the description of the invention. And repair:, should still be within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional binoculars; FIG. 2 is a bottom perspective view of a preferred embodiment of a fixed-width binocular of the present invention; FIG. 3 is a preferred embodiment. A bottom view exploded plan view illustrating a left housing, a right housing and an adjustment unit; FIG. 4 is a partial exploded view of the preferred embodiment, and the blade 1 is an arm diagram illustrating the adjustment of the early element and the Positioning unit; 11 1297397 FIG. 5 is a top plan exploded plan view of the preferred embodiment, illustrating the left housing, the right housing and the adjusting unit; FIG. 6 is a bottom view and partial exploded perspective view of the preferred embodiment FIG. 7 is a top view and a partially exploded perspective view of the preferred embodiment, illustrating the positioning unit; FIG. 8 is a combined cross-sectional view of the preferred embodiment, illustrating the two interlocking of the positioning unit The assembly is in a release position; and Figure 9 is a view similar to Figure 8 illustrating the two-link assembly in a forced position. 12 1297397
【主要元件符號說明】 20.. .·中心座 50... .右殼體 21·· ..承塊 51... .頂塊 11··' ..翼塊 52... •底塊 23… • •翼塊 53... .連結塊 24.., ..插孔 531., ..前壁 3 0.., ..調整單元 532., .·後壁 31·., ，.導軌 54.·· .右容室 32... ..左滑塊 5 5... .右飾板 33··. 1.右滑塊 60... .目鏡組 34... ..齒輪 70... .物鏡組 35... ,.左齒條 80... .調整單元 36... ,.右齒條 81.·· .定位座 37... .左鎖塊 82... .本體 38... .右鎖塊 821.. .底面 39... .蓋板 822.. .頂面 40··· .左殼體 823.. .第一容置槽 41··. .頂塊 824.. •螺孔 42... •底塊 83·.., ，插孔 43... .連結塊 84·… ，腳架螺孔 431。 ..前壁 85.··· ，連動組合體 432, "後壁 86____ ,螺鎖件 44... .左容室 861·· .底面 45... .左飾板 862.. .頂面 13 1297397 863.. .環周面 864.. .握條 8 6 5…中心柱 8 6 6…偏心塊 87.. ..壓置塊 871.. .底面 872.. .頂面 873…外凸環 874…内凸環 875…偏心孔 876.. .第二容置槽 88.. ..迫緊環 881.. .底面 882...頂面[Description of main component symbols] 20.. . . center block 50... right housing 21··. bearing block 51... top block 11··'.. wing block 52... • bottom block 23... • • Wing block 53.... Connecting block 24.., .. jack 531., .. front wall 3 0.., .. adjusting unit 532., .. rear wall 31·., ,. Guide rail 54.·..Right chamber 32.....Left slider 5 5....Right panel 33··. 1.Right slider 60... Eyepiece group 34... Gear 70... .object lens group 35...,.left rack 80....adjustment unit 36...,.right rack 81.··.positioning seat 37....left lock block 82.. . Body 38.... Right lock block 821.. . Bottom surface 39. . Cover plate 822.. . Top surface 40··· . Left housing 823... First accommodating groove 41··. Top block 824.. • Screw hole 42... • Bottom block 83·.., , Jack 43... Connecting block 84·..., tripod screw hole 431. .. front wall 85.···, linkage assembly 432, "rear wall 86____, screw lock 44.... left chamber 861··. bottom surface 45. . left trim 862.. . top Face 13 1297397 863.. . Annular surface 864.. Grip 8 6 5... Center column 8 6 6... Eccentric block 87... Pressing block 871.. Bottom surface 872.. . Top surface 873... The convex ring 874...the inner convex ring 875...the eccentric hole 876..the second accommodating groove 88...the pressing ring 881..the bottom surface 882...top surface