201002473 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種研磨機，特別是指一種可免用工 具安全拆卸研磨盤的研磨機。 【先前技術】 如圖1、2所示，習知一種氣動式研磨機包含—本體i 可轉動地裝没於戎本體1内的偏心柏2、一可轉動地裝 〇 設於該偏心軸2的平衡器3，及一可拆卸地螺鎖於該平衡器 3的研磨盤4。 當要拆卸該研磨盤4時，使用者必須特別使用一扳手5 制止該平衡器3轉動，才能將該研磨盤4從該平衡器3上 鬆轉下來，因此，在拆卸操作上較不方便，再者，由於此 種研磨機在沒有切斷驅動氣壓的情況下，亦能進行拆卸該 研磨盤4的操作，因此，在拆卸的過程中，若使用者不慎 吳觸該本體1上的啟動開關，即可能發生誤驅動該研磨盤4 J 的意外，而導致危險。 女圖3、4所不，習知另一種氣動式研磨機包含一本體 6 、一可轉動地裝設於該本體6内的平衡器7、—可拆卸地 累鎖於違平衡器7的研磨盤8、—裝設於該本體6上的定位 銷9，及一抵接於該定位銷9與該本體ό之間的彈簧9〇1。 該平衡器7具有二間隔設置的定位孔7〇1。 ’ …當要拆卸該研磨盤8時，使用者必須一手費力地按壓 4叱位銷9去嵌住其卜定位孔701，才能制止該平衡器7 轉動’然後’才能以另一手將該研磨Μ 8從該平衡器7上 5 201002473 鬆轉下來’如此，雖然不需另外使用特別的工具，但是’ 使用者需同時動用雙手才能完成拆卸，在拆卸操作上亦是 不便於使用者，再者，由於此種研磨機在沒有切斷驅動氣 壓的情況下，也同樣能進行拆卸該研磨盤8的操作，因此 ，在拆卸過程中，也可能發生上述誤驅動該研磨盤8的意 外。 【發明内容】 因此，本發明之目的，即在提供一種方便拆卸且可有 效避免研磨盤被誤驅動的可免用工具安全拆卸研磨盤的研 磨機。 本發明可免用工具安全拆卸研磨盤的研磨機，包含一 本體、一偏心軸、一氣動組件、一平衡器、—研磨盤，及 一定位單元。該本體具有—容置空間，及一與該容置空間 連通的進氣道，該進氣道可供一高壓氣體輸入。該偏心軸 是沿一軸向可轉動地裝設於該容置空間内，該偏心軸具有 一第一 >而部、一沿該軸向相反於該第一端部的第二端部， 及一 6玄軸向從该第—端部貫通至該第二端部的進氣孔， 該進氣孔具有一設置於該第一端部的第一卡合段、一設置 於該第二端部的第二卡合段，及一連通該第一、二卡合段 的連通段。該氣動組件是裝設於該容置空間内，該氣動組 件具有一氣缸，及一可轉動地裝設於該氣缸内並可驅動該 偏心軸的轉子。該平衡器是可轉動地裝設於該偏心軸的第 二端部，該平衡器具有一沿該軸向設置的作動孔，該作動 孔具有一第三卡合段。該研磨盤是可拆卸地裝設於該平衡 201002473 器疋位單元具有一可沿該軸向移動地裝設於該容置空 間内的第定位件、一設置於該本體與該第一定位件之間 Μ — μ 件、一可沿該軸向移動地裝設於該平衡器的 第一疋位件’及一設置於該第二定位件與該平衡器之間的 第一彈丨生元件，該第一定位件具有一連通該進氣道與該進 氣孔的第一氣子丨 α .. L札’及一朝向該第一卡合段的第一卡合部， D玄第一二位件具有一朝向該第二卡合段的第二卡合部，及 Γ 與第一卡合段嵌卡的第三卡合部，該第一、二定位件 可刀別相對於s亥偏心軸在—鬆脫位置與一卡合位置之間移 動s該進氣道進氣時，該第一、二定位件被該高_胃 致動至該鬆脫位署，# @ , Α Αιτ „ 置 s亥弟一、二卡合部是分別脫開該第— 、一卡合段，當該進氣道斷氣時，該第一、二定位件移動 卡 至該卡合位置，該第―、二卡合部是分別與該第一、 合段礙卡。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，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。 β 參閱圖5、6,為本發明可免用工具安全拆卸研磨盤的 研磨機的一較佳實施例，該研磨機包含：—本體1 〇、一頂 内蓋20、一底内蓋30、一偏心軸4〇、_氣動組件5〇、一 平衡器60、一研磨盤70、一定位單元8〇，及三轴承9〇、 91 、 92 ° 該本體10 具有一容置空間11、一沿—輛向χ延伸至 7 201002473 泫谷置空間11内的凸出部12、—與該容置空間1丨連通且 可供一向壓氣體100輸入的進氣道13，該進氣道13具有一 可與一氣壓源（圖未不）連接的進氣端131，及一貫通該凸 出部12的出氣端132。 該頂内蓋20是設置於該容置空間u内，該頂内蓋2〇 具有一底壁21、一設置於該底壁21並朝上延伸出的圍繞壁 22，及數間隔设置設置於該圍繞壁22的一外周面上且沿該 軸向X延伸的限位槽23，該底壁2丨具有一供該偏心軸4〇 穿過的中心孔211。 该底内盖30是設置於該容置空間丨丨内且相反於該頂内 蓋20，忒底内盍30具有一供該偏心轴4〇穿過的中心孔3 j 如圖 所示’該偏心軸4〇是沿該軸向X可轉動201002473 IX. Description of the Invention: [Technical Field] The present invention relates to a grinder, and more particularly to a grinder that can be safely disassembled from a grinding disc without the use of a tool. [Prior Art] As shown in FIGS. 1 and 2, a pneumatic grinder includes a eccentric cymbal 2 rotatably mounted in the cymbal body 1 and a rotatably mounted eccentric shaft 2 The balancer 3, and a grinding disc 4 detachably screwed to the balancer 3. When the grinding disc 4 is to be disassembled, the user must use a wrench 5 to stop the rotation of the balancer 3, so that the grinding disc 4 can be loosened from the balancer 3, and therefore, it is inconvenient in disassembly operation. Furthermore, since the grinding machine can perform the operation of disassembling the grinding disc 4 without cutting the driving air pressure, if the user accidentally touches the start of the main body 1 during the disassembly process, The switch, that is, an accident that may accidentally drive the grinding disc 4 J may cause a danger. Female Figure 3, 4, another conventional pneumatic grinder includes a body 6, a balancer 7 rotatably mounted in the body 6, - detachably grinds the grind of the counterbalancer 7 The disc 8 is a positioning pin 9 mounted on the body 6 and a spring 9〇1 abutting between the positioning pin 9 and the main body. The balancer 7 has two spaced apart positioning holes 7〇1. 'When the grinding disc 8 is to be disassembled, the user must press the 4 position pin 9 to insert the positioning hole 701 with one hand, in order to prevent the balancer 7 from rotating 'and then' to grind the other hand. 8 Loosen from the balancer 7 on 5 201002473'. So, although no special tools are needed, the user needs to use both hands to complete the disassembly. It is also inconvenient for the user to disassemble. Since such a grinder can also perform the operation of detaching the grinding disc 8 without cutting the driving air pressure, the above-described accident of erroneously driving the grinding disc 8 may occur during the disassembling process. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a grinder for safely disassembling a grinding disc which is easy to disassemble and which can effectively prevent the grinding disc from being erroneously driven. The invention can be used without the tool to safely disassemble the grinding disc, and comprises a body, an eccentric shaft, a pneumatic component, a balancer, a grinding disc, and a positioning unit. The body has an accommodating space and an air inlet communicating with the accommodating space, and the air inlet is for inputting a high pressure gas. The eccentric shaft is rotatably mounted in the accommodating space along an axial direction, the eccentric shaft has a first portion, and a second end portion along the axial direction opposite to the first end portion, And an air intake hole extending from the first end portion to the second end portion, the air inlet hole has a first engaging portion disposed at the first end portion, and a second engaging portion disposed at the second end portion a second engaging section of the end, and a connecting section connecting the first and second engaging sections. The pneumatic component is mounted in the accommodating space, the pneumatic component has a cylinder, and a rotor rotatably mounted in the cylinder and capable of driving the eccentric shaft. The balancer is rotatably mounted to the second end of the eccentric shaft, and the balancer has an operating hole disposed along the axial direction, the actuating hole having a third engaging portion. The grinding disc is detachably mounted on the balance 201002473. The clamping unit has a first positioning member that is movably mounted in the accommodating space along the axial direction, and is disposed on the body and the first positioning member. a first clamping member disposed between the second positioning member and the balancer and a first elastic member disposed between the second positioning member and the balancer The first positioning member has a first gas 丨α..L 扎' connected to the air inlet and the air inlet hole, and a first engaging portion facing the first engaging portion, D Xuan first The two-position member has a second engaging portion facing the second engaging portion, and a third engaging portion that is inserted into the first engaging portion, and the first and second positioning members are different from each other. When the eccentric shaft moves between the release position and the engaged position s, the first and second positioning members are actuated by the high _ stomach to the loose position, #@, Α Αιτ „ The first and second engaging portions are respectively disengaged from the first and second engaging portions, and when the intake port is cut off, the first and second positioning members are moved to the engaging portion. The first and second engaging portions are respectively associated with the first and second blocking portions. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention are preferably combined with one of the following reference drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the detailed description of the embodiments, reference is made to Figures 5 and 6, which are a preferred embodiment of a grinder for safely disassembling a grinding disc in accordance with the present invention, the grinder comprising: - a body 1 a top inner cover 20, a bottom inner cover 30, an eccentric shaft 4〇, a pneumatic component 5〇, a balancer 60, a grinding disc 70, a positioning unit 8〇, and three bearings 9〇, 91, 92 The body 10 has an accommodating space 11 and a bulging portion 12 extending in the 2010 置 空间 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 The air inlet 13 has an air inlet end 131 connectable to a pressure source (not shown), and an air outlet end 132 extending through the protrusion 12. The top inner cover 20 is provided. In the accommodating space u, the top inner cover 2 has a bottom wall 21, and is disposed on the bottom wall 21 and faces upward. An extending surrounding wall 22, and a plurality of spaced-apart slots 23 disposed on an outer peripheral surface of the surrounding wall 22 and extending along the axial direction X, the bottom wall 2丨 having a eccentric shaft 4 The bottom inner cover 30 is disposed in the accommodating space 且 and opposite to the top inner cover 20, and the bottom inner cymbal 30 has a central hole 3 j through which the eccentric shaft 4 〇 passes. The figure shows that the eccentric shaft 4〇 is rotatable along the axial direction X.
地裝設於該容置空間U内。該偏心軸4〇具有一穿過該中心 孔2 11的第一端部4丨、一沿該軸向X相反於該第一端部4 ^ 的第二端部42 ' 一連接該第一、二端部41、42並穿過該中 〜孔31的連接段43，及一沿該軸向X從該第一端部41貫 通至該第二端部42的進氣孔44。 °玄進氣孔44具有一設置於該第一端部41的導引段441 认於該第一端部41且與該導引段441連通的第一卡 合段 442、一. -ΐη. m. -ί-Α >-λ- 叹置於泫弟二端部42的第二卡合段443、一 連通該第一 — “ 、二卡合段442、443的連通段444、一從該連 t段444底端橫向延伸至該第二卡合段443上緣的導氣段 及界定於該第一卡合段442與該連通段444之間的 8 201002473 肩部446。在本實施例中，該導引段441的孔徑是大於該第 一卡合段442的孔徑，該第一卡合段442的孔徑是大於該 連通U4的孔控，該第—、二卡合段料2、443的橫戴面 是呈非圓形。 如圖6所示，該氣動組件50是裝設於該容置空間u内 並位於該頂、底内i 20、3〇之間，該氣動組件5〇具有— 氣缸51 &可轉動地裝設於該氣缸5ι β並與該偏心軸 r Ο 4〇的連接段43連接的轉子52。當該轉子52被該高壓空氣 100驅動時，可帶動該偏心軸4〇轉動。 、如圖6、9所示’該平衡器6〇是可轉動地裝設於該偏 〜轴40的第二端部42，該平衡器6〇具有一沿該轴向X設 置的作動孔61，及-沿該車由向χ設置的螺孔62。該作動孔 61具有一第三卡合段611、一與該第三卡合段6U連接的容 置段612、-與該容置段612連接的導引段613，及—界定 於該容置段612與該導引段⑴之間的肩部614。在本實施 例中’遠第三卡合段611的橫截面是呈非圓形。 如圖5、6所示’該研磨盤％是可拆卸地裝設於該平 衡“〇。該研磨盤70具有一盤體71，及—從該盤體”朝 _螺接。 视技Μ疋與該平衡器6〇的螺 向X銘H 1G U所不’該定位單元⑼具有—可沿該軸 。移動地裝設於該容置空間η内的第_定位件81、—設 置：該本體10與該第一定位件81 <間的第一彈性元件82 —可沿該轴向X移動地展設於該平衡器6〇的第二定位件 9 201002473 83，及一設置於該第二定位件83與該平衡器6〇之間的第 二彈性元件84。該第-、二定位件81、83可分別相對於該 偏心軸40在一鬆脫位置（見圖6)與—卡合位置（見圖12 )之間移動。 f 該第一定位件81具有一頂壁部811、一設置於該頂壁 部8U並朝下延伸至與該圍繞壁22套接的周壁部812、一 從該周壁部812底緣沿徑向朝外延伸出的環壁部813、一沿 該軸向X從該頂壁部8U朝下延伸至與該進氣孔料的導引 段44丨銜接的第一導引部814、一從該第一導引部814延伸 出亚朝向該進氣孔44的第一卡合段442的第一卡合部815 、-沿軸向X貫穿該頂壁部811、該第一導引部J與該第 -卡合部815而連通該進氣道13與該進氣孔44的第一氣 ㈣置於該周壁部812的—内周面上並分別與 該等限位槽23銜接的限位塊817、—設置於該第一導引部 814上的第一密封環us，及一嗖罟 ^ 。又置於s亥第一導引部814上 的第二密封環8 1 9。為太本| 在本Λ把例中’該第一卡合部815的橫 截面是呈非圓形，該太研& π 落本體10的凸出部丨2是沿該軸向χ延 伸至該第一氣孔8 16内， 6 内違第一岔封環818是介於該第一 導引部8 14盘該太興】Λ ^ 、 體丨〇的凸出部12之間，而可密封該第 一氣孔8 1 6 ’該第二密封 封衣819疋介於該第一導引部8M與 該偏心軸40的第—端邱 ° 之間’而可密封該進氣孔44的 導引段441。 該第一彈性元件s s 疋沿該軸向X抵接於該本體10與 舌亥极壁部8 1 3之間。士 a 在本貫施例中，該第一彈性元件82是 10 201002473 一種壓縮彈簧。 第定位件83具有一朝向該進氣孔44的第二卡合 段443的第二卡合邱s ί 831、一與該作動孔61的第三卡合段 611嵌卡的第三卡合邱 1 832、—從該第三卡合部832延伸至 該作動孔61的導引& 等引鲛613内的第二導引部833，及一界定 於該第三卡合部832盥呤筮__ •^興s玄第一導引部833之間的環肩面834 。在本實施例中，古女笛__ _ . 邊弟一、二卡合部831、832的橫截面是The ground is installed in the accommodating space U. The eccentric shaft 4 has a first end portion 4 穿过 passing through the center hole 2 11 , and a second end portion 42 ′ opposite to the first end portion 4 ^ along the axial direction X. The two end portions 41, 42 pass through the connecting portion 43 of the middle portion 31, and an air inlet hole 44 extending from the first end portion 41 to the second end portion 42 in the axial direction X. The slanting air inlet 44 has a first engaging portion 442 and a guiding portion 441 disposed on the first end portion 41 and communicating with the guiding portion 441. m. -ί-Α >-λ- sighs the second engaging section 443 of the two ends 42 of the younger brother, a connecting section 444 that communicates with the first - "two engaging sections 442, 443, a slave The end portion of the t-segment 444 extends laterally to the air guiding portion of the upper edge of the second engaging portion 443 and the shoulder portion 446 defined between the first engaging portion 442 and the connecting portion 444. In this embodiment In an example, the aperture of the guiding section 441 is larger than the aperture of the first engaging section 442, and the aperture of the first engaging section 442 is larger than the aperture of the connecting U4, and the first and second engaging sections 2 The viscous surface of the 443 is non-circular. As shown in FIG. 6, the pneumatic component 50 is disposed in the accommodating space u and located between the top and bottom surfaces i 20, 3 ,, the pneumatic component 5〇 has a cylinder 52 & a rotor 52 rotatably mounted to the cylinder 5πβ and connected to the connecting section 43 of the eccentric shaft r Ο 4〇. When the rotor 52 is driven by the high-pressure air 100, it can be driven The eccentric shaft 4〇 Rotating. As shown in Figures 6 and 9, the balancer 6 is rotatably mounted on the second end portion 42 of the offset shaft 40. The balancer 6 has an action along the axial direction X. a hole 61, and a screw hole 62 disposed along the vehicle from the side of the vehicle. The operating hole 61 has a third engaging portion 611, a receiving portion 612 connected to the third engaging portion 6U, and The guiding section 613 connected to the segment 612, and the shoulder 614 defined between the receiving section 612 and the guiding section (1). In the embodiment, the cross section of the far third engaging section 611 is Non-circular. As shown in Figures 5 and 6, 'the grinding disc % is detachably mounted on the balance. The grinding disc 70 has a disc body 71, and - is screwed from the disc body. The viewing mechanism and the balance of the balancer 6〇 are not in the position of the head unit (1). Along the axis, the first positioning member 81, which is movably mounted in the accommodating space η, is disposed along the axial direction of the first elastic member 82 between the body 10 and the first positioning member 81 X is movably disposed on the second positioning member 9 201002473 83 of the balancer 6〇, and a second elastic member 84 disposed between the second positioning member 83 and the balancer 6〇. The first and second The positioning members 81, 83 are respectively movable relative to the eccentric shaft 40 between a release position (see Fig. 6) and an engagement position (see Fig. 12). f The first positioning member 81 has a top wall portion 811. a peripheral wall portion 812 disposed on the top wall portion 8U and extending downwardly to the surrounding wall 22, and a ring wall portion 813 extending radially outward from the bottom edge of the peripheral wall portion 812. An axial direction X extends downward from the top wall portion 8U to a first guiding portion 814 that engages with the guiding portion 44 of the intake hole, and a sub-direction extends from the first guiding portion 814 toward the intake Hole 4 The first engaging portion 815 of the first engaging portion 442 of the fourth engaging portion 442 extends through the top wall portion 811 in the axial direction X, and the first guiding portion J and the first engaging portion 815 communicate with the intake passage 13 A limiting block 817, which is disposed on the inner peripheral surface of the peripheral wall portion 812 and which is respectively engaged with the limiting groove 23, is disposed on the first guiding portion 814. The first sealing ring us, and a second sealing ring 8 1 9 placed on the first guiding portion 814 of the shai. It is too original | in the example of the first 'the first engagement The portion 815 has a non-circular cross section, and the projection portion 2 of the Taiyan & π drop body 10 extends into the first air hole 8 16 along the axial direction, 6 violating the first seal ring 818 is between the first guiding portion 8 14 and the protruding portion 12 of the body, and can seal the first air hole 8 1 6 'the second sealing seal 819 疋The guiding portion 441 of the air inlet hole 44 is sealed between the first guiding portion 8M and the first end of the eccentric shaft 40. The first elastic member ss 疋 is offset along the axial direction X. Connected between the body 10 and the tongue wall portion 8 1 3 . In the example, the first elastic member 82 is a compression spring of 10 201002473. The first positioning member 83 has a second engaging portion 443 facing the second engaging portion 443 of the air inlet hole 44, and an operating hole The third engaging portion 611 of the third engaging portion 611 is inserted into the third engaging portion 1 832, and the second guiding portion extending from the third engaging portion 832 to the guiding hole of the operating hole 61 833, and an annular shoulder surface 834 defined between the third engaging portion 832 盥呤筮 _ _ s 第一 第一 first guiding portion 833. In this embodiment, the cross section of the ancient female whistle __ _. The first and second engaging portions 831, 832 are
呈非圓形。 ^第彈丨生元件84是沿該轴向X抵接於該作動孔6 j 的肩部614與該環肩面834之間。在本實施例中，該第二 彈性元件84是一種壓縮彈簧。 如圖6所示，该軸承9〇是裝設於該頂内蓋的圍繞 壁22與β偏心軸4〇的第一端冑41之間。該轴承91是設 置於該底内盍30與該偏心軸4〇的連接段43之間。該軸承 92疋设置於s亥偏心軸4〇的第二端部42與該平衡器6〇之間It is non-circular. The first elastic generating element 84 is abutted between the shoulder 614 of the operating hole 6 j and the annular shoulder surface 834 along the axial direction X. In the present embodiment, the second resilient member 84 is a compression spring. As shown in Fig. 6, the bearing 9 is mounted between the surrounding wall 22 of the top inner cover and the first end turn 41 of the beta eccentric shaft 4''. The bearing 91 is disposed between the bottom inner bore 30 and the connecting section 43 of the eccentric shaft 4''. The bearing 92 is disposed between the second end portion 42 of the eccentric shaft 4〇 and the balancer 6〇
U 藉此’如圖6所示’當使用者將該氣壓源（圖未示） 接上該進氣道13時，該高壓氣體丨〇〇可從該進氣道丨3經 s亥第一氣孔8 16流入該偏心轴4〇的進氣孔44，在此過程中 ，由於該導引段441的孔徑是小於該第一卡合段442的孔 徑’流入該第一卡合段442的部分高壓氣體100會被該肩 部446反彈回去，致使該第一定位件81朝上移動至該鬆脫 位置，而使該第一卡合部815脫開該第一卡合段442，同時 ’經該導氣段445流入該第二卡合段443的高壓氣體1〇〇 11 201002473 則會迫使該第二定位件83下移至該鬆脫位置，使該第一 合部831脫開該第二卡合段州，如此，該偏心轴;^ 相對於該第-定位件81轉動，該平衡器6〇則可相對於；玄 偏心轴40轉動，因此，在沒有切斷該高壓氣體⑽w = :’使用者即無*將該研磨盤7〇從該平衡器6〇上鬆^下 rU is thereby 'as shown in FIG. 6'. When the user connects the air pressure source (not shown) to the air inlet 13 , the high pressure gas 丨〇〇 can be passed from the air inlet 丨 3 through the first The air hole 8 16 flows into the air inlet hole 44 of the eccentric shaft 4 , in the process, since the aperture of the guiding portion 441 is smaller than the diameter of the first engaging portion 442 'flowing into the first engaging portion 442 The high pressure gas 100 is bounced back by the shoulder portion 446, causing the first positioning member 81 to move upward to the releasing position, and the first engaging portion 815 is disengaged from the first engaging portion 442, while The high pressure gas 1〇〇11 201002473 flowing into the second engaging section 443 of the air guiding section 445 forces the second positioning member 83 to move down to the releasing position, so that the first engaging portion 831 is disengaged from the second portion 831. The engagement state, as such, the eccentric shaft; ^ relative to the first positioning member 81, the balancer 6 可 is rotatable relative to the eccentric shaft 40, therefore, the high pressure gas is not cut (10) w = : 'The user is no* to loosen the grinding disc 7〇 from the balancer 6
C 相反地’如圖12所示’當使用者切斷該氣壓源（圖未 不）時’該高壓氣體100(見W 6)即不會再流入該 13内’因此’該第—彈性元件U會迫使該第—定位件81 下移至該卡合位置，該笛__它μ。， 亥弟疋位件81的限位塊817會分別 與：頂内蓋20的限位槽23後卡，該第_卡合部SB會斑 5亥弟一卡合段442斜，同時，該第二彈性元件84則合迫 使该第二定位件83上移至該卡合位置，該第二卡合部831 ^與卡合段443嵌卡’而’該第三卡合部阳則是 與該第三卡合段611保持嵌卡，如此，該偏心轴* 相對於該第-定位件81轉動，該平衡器6〇也 對 該偏心軸4〇轉動，因此，在駚 ' 相對於 隹切斷5亥间壓虱體100 C見圖6 的^兄下，使用者不必使用任何工具， 磨盤70從該平衡器60上鬆轉下來。 千將。亥研 經由以上的說明’可再將本發明的優點歸納如下. 本發明只有在切斷該高磨氣體ί00的情況下’使用者 才能將該研磨盤70從該平衡器60上鬆轉下來，因此，在 2的過私中’本發明可徹底避免使用者發生誤驅動該研 的意外，再者，在切斷該高壓氣體ΗΚ)的的情況下 12 201002473 ，使用者不需使用任何工具，單手即可將該研磨盤7〇鬆轉 下來，相較於習知技術，本發明在拆卸操作上不僅安全， 更是相當方便。 另外要說明是，如圖13所示，該本體丨〇更具有一與 該氣缸51連通的驅動氣道M，當該高壓空氣丨〇〇經該驅動 氣道14進入該氣缸51内時，該高壓空氣1〇〇可驅動該轉 子52帶動該偏心軸4〇轉動。 〇 歸納上述，本發明之可免用工具安全拆卸研磨盤的研 磨機’不僅方便於使用者空手拆卸研磨盤，且在拆卸的過 程中更可有效避免研磨盤被誤驅動，故確實能達到發明之 目的。 准以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修倚，皆仍 屬本發明專利涵蓋之範圍内。C is oppositely 'as shown in FIG. 12' when the user cuts off the air pressure source (not shown), the high pressure gas 100 (see W 6) does not flow into the 13 'then' the first elastic element U will force the first positioning member 81 to move down to the engaged position, the flute __ it μ. , the limiting block 817 of the 疋 疋 疋 81 81 81 81 81 8 81 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥 亥The second elastic member 84 forcibly moves the second positioning member 83 up to the engaging position, and the second engaging portion 831 ^ is engaged with the engaging portion 443 and the third engaging portion is The third engaging section 611 holds the card, so that the eccentric shaft * rotates relative to the first positioning member 81, and the balancer 6 turns also rotates the eccentric shaft 4, thus, at 駚' relative to the 隹Under the smashing of the smashing body 100 C as shown in Fig. 6, the user does not need to use any tools, and the grinding disc 70 is loosened from the balancer 60. Thousands will. According to the above description, the advantages of the present invention can be further summarized as follows. The present invention can only loosen the grinding disc 70 from the balancer 60 only when the high grinding gas ί00 is cut off. Therefore, in the case of 2, the invention can completely avoid the user's accidental driving of the accident, and in the case of cutting off the high-pressure gas, 12 201002473, the user does not need to use any tools. The grinding disc 7 can be loosened with one hand, and the present invention is not only safe but also quite convenient in disassembly operation compared to the prior art. In addition, as shown in FIG. 13, the main body 丨〇 further has a driving air passage M communicating with the cylinder 51. When the high-pressure air passes through the driving air passage 14 into the cylinder 51, the high-pressure air 1〇〇 can drive the rotor 52 to drive the eccentric shaft 4〇 to rotate. In summary, the above-mentioned grinder for safely disassembling the grinding disc of the present invention is not only convenient for the user to disassemble the grinding disc by empty hand, but also can effectively prevent the grinding disc from being erroneously driven during the disassembling process, so that the invention can be achieved. The purpose. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent change and the modification according to the scope of the invention and the description of the invention. All remain within the scope of the invention patent.
13 201002473 【圖式簡單說明】 圖1是習知一種氣動式研磨機的立體外觀示意圖； 圖2是該研磨機拆卸一研磨盤的操作示意圖； 圖3是習知另一種氣動式研磨機的立體外觀示意圖； 圖4是該研磨機拆卸一研磨盤的操作示意圖； 圖5是本發明之可免用工具安全拆卸研磨盤的研磨機 的一較佳實施例的分解立體示意圖； 圖6该較佳實施例的組合剖視示意圖，說明該較佳實 施例的—第一、二定位件在一鬆脫位置； 圖7是圖5中VH -w割面線的剖視示意圖； 圖8是圖5中视_·割面線的剖視示意圖； 圖9是該較佳實施例的一平衡器的立體示意圖； 圖是該第一定位件的立體示意圊； 圖11是該第二定位件的立體示意圖； 圖12是一類似於圖6的視圖，說明該第_、二定位件 在--^合位置；及 —圖13是一類似於圖6的視圖，說明高壓氣體經該較佳 實施例的一驅動氣道進入一氣缸並驅動—轉子。 14 201002473 t： 【主要元件符號說明 1 .........本體 2 .........偏心軸 3 .........平衡器 4 .........研磨盤 5 .........扳手 6 .........本體 7 .........平衡器 701……定位孔 8 .........研磨盤 9 .........定位銷 90 1......彈簧 100……高壓氣體 10 .......本體 11 ........容置空間 12 .......凸出部 13 .......進氣道 131……進氣端 132……出氣端 14 .......驅動氣道 20 .......頂内蓋 21 ··••…底壁 211......中心孔 22 .......圍繞壁 23........限位槽 30........底内蓋 3 1........中心孔 40 ........偏心軸 41 ........第一端部 42 ........第二端部 43 ........連接段 44 ........進氣孔 441……導引段 442……第一卡合段 443……第二卡合段 444……連通段 445……導氣段 446……肩部 50 ........氣動組件 51 ........氣缸 52 ........轉子 60........平衡器 61........作動孔 611……第三卡合段 612……容置段 613……導引段 614......肩部 15 201002473 62 ··· …螺孔 92.··· —軸承 70 ·· …研磨盤 X ·. •…轴向 71 ···· …盤體 72…· …螺紋段 80 ···· …定位單元 81 ···· …第一定位件 811··· …頂壁部 812··· …周壁部 813… …環壁部 814… …第一導引部 815… …第一卡合部 816··· …弟 氣孔 817··· …限位塊 818··· …第一密封環 819··· …第二密封環 82 ···· …第一彈性元件 83 ··.· …第二定位件 831 ··· …第二卡合部 832··· …第三卡合部 833… …第二導引部 834… …環肩面 84 ··· …第二彈性元件 9〇 .... …軸承 91 ···· …轴承 1613 201002473 [Simplified illustration of the drawings] Fig. 1 is a schematic perspective view of a conventional pneumatic grinder; Fig. 2 is a schematic view showing the operation of disassembling a grinding disc by the grinder; Fig. 3 is a perspective view of another pneumatic grinder of the prior art; Figure 4 is a schematic view showing the operation of the grinding machine for disassembling a grinding disc; Figure 5 is an exploded perspective view of a preferred embodiment of the grinder for safely disassembling the grinding disc of the present invention; FIG. 7 is a cross-sectional view of the VH-w cut surface line of FIG. 5; FIG. 8 is a cross-sectional view of the first and second positioning members of the preferred embodiment; FIG. Figure 9 is a perspective view of a balancer of the preferred embodiment; Figure is a perspective view of the first positioning member; Figure 11 is a perspective view of the second positioning member Figure 12 is a view similar to Figure 6, illustrating the first and second positioning members in a --position; and - Figure 13 is a view similar to Figure 6, illustrating the high pressure gas through the preferred embodiment a drive air passage into a cylinder and drive-turn child. 14 201002473 t: [Main component symbol description 1 ......... body 2 ......... eccentric shaft 3 ......... balancer 4 ..... ....grinding disc 5 .........wrench 6 ......... body 7 ... ... balancer 701 ... positioning hole 8 .... ..... grinding disc 9 ......... positioning pin 90 1 ... spring 100 ... high pressure gas 10 ... ... body 11 .... . accommodating space 12 ... bulging portion 13 ... ... air inlet 131 ... intake end 132 ... air outlet end 14 ... drive air passage 20 .. ..... top inner cover 21 ··••... bottom wall 211... center hole 22 .... around the wall 23........ limit slot 30.. ...... bottom inner cover 3 1........ center hole 40........ eccentric shaft 41........ first end 42 .... ....the second end portion 43........the connecting portion 44........the air inlet hole 441...the guiding portion 442...the first engaging portion 443...the second Engagement section 444...communication section 445...air guide section 446...shoulder 50 ........pneumatic component 51 ........cylinder 52 ........rotor 60........balancer 61........acting hole 611...third engaging section 612...receiving section 613...guide section 614...shoulder Ministry 15 201002473 62 · ···... screw hole 92.···—bearing 70 ··...grinding disc X ·. •...axial 71 ···· ...disk body 72...·thread section 80 ····...positioning unit 81 ·· ··...first positioning member 811···...top wall portion 812···...peripheral wall portion 813...ring wall portion 814...first guiding portion 815...first engaging portion 816···... Air hole 817··· ...limit block 818···...first seal ring 819···...second seal ring 82····...first elastic member 83····...second positioning member 831 ·· ...the second engaging portion 832···the third engaging portion 833...the second guiding portion 834...the annular shoulder surface 84···...the second elastic member 9〇....the bearing 91· ··· ...bearing 16