200932424 九、發明說明： 【發明所屬之技術領域】 本發明係一種電動研磨工具，尤指一種充電式的電動 研磨工具。 【先前技術】 目前有關於木材或金屬的表面研磨或拋光打纖等作業 ’除了傳統上以人工手動操作之外，部份相關業者也推出 〇 一些以氣動或電動方式來驅動的研磨工具，不過既有以氣 動或電動方式驅動的研磨工具，一般普遍存在有組成構造 複雜、體積大及笨重等問題，並且必須以管路或電線外接 動力源’容易造成攜帶及操作上的不便與限制。 【發明内容】 Ο 為解決既有氣動或電動研磨工具有關於體積大及必須 外接動力源的不足及限制，本發明提供―種體積靈巧且使 用時無需外接動力源的充電式電動研磨工具。 本發明所提供的充電式電動研磨工具，主要是將充電 式鋰電池包、驅動馬達及相關的控制構造等構件， ==的殼體㈣，巧妙地以精簡的結構組構成使 連接動力源的充電式電動研磨工具，有 方便於使用者攜帶到任何場所作業的實用效能者。 本發明所運用的技術手段係在供 研磨q裡兄&式電動 一機體’該機體職有-内部呈中錢的殼體，於該 4 200932424 殼體的中空内部安裝設有形成電連接的一鋰電池包、一鋰 電保護電路板、一觸動開關及一驅動馬達，並於該殼體的 前側固設結合設有一定位環；其中，該驅動馬達於前側伸 設有一驅動軸，該驅動軸係位於該定位環的軸心位置且於 端部形成一環齒部，於该驅動馬達的後方設有一散熱片； 一減速齒輪組，係設於該定位環的内部且包含有一旋 轉座 '一對行星齒輪及一齒環；其中，該旋轉座於後侧軸 心位設有一内徑大於該驅動軸且套設於該驅動軸外部的軸 ©套孔，於該旋轉座的中段部位對應於該環齒部而相對稱地 開設有一對行星齒輪槽，並於該旋轉座的前側部位形成一 軸柱；該兩行星齒輪係各利用一軸桿樞設結合於該旋轉座200932424 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to an electric abrasive tool, and more particularly to a rechargeable electric abrasive tool. [Prior Art] There are currently operations such as surface grinding or polishing of wood or metal. In addition to the traditional manual operation, some related companies have also introduced some grinding tools that are driven pneumatically or electrically. However, there are abrasive tools that are driven by pneumatic or electric methods. Generally, there are problems such as complicated structure, large volume and heavy weight, and the power source must be externally connected with pipes or wires, which is easy to cause inconvenience and restriction in carrying and operation. SUMMARY OF THE INVENTION In order to solve the deficiencies and limitations of existing pneumatic or electric grinding tools regarding large volume and the need for an external power source, the present invention provides a rechargeable electric abrasive tool that is compact and requires no external power source. The rechargeable electric grinding tool provided by the invention mainly comprises a rechargeable lithium battery pack, a driving motor and a related control structure and the like, and the housing (4) of == is skillfully constructed in a compact structure to connect the power source. The rechargeable electric grinding tool has practical performances that are convenient for the user to carry to any place. The technical means used in the present invention is for the grinding of the q ri brother & type electric body - the body of the body - internal money-filled housing, installed in the hollow interior of the 4 200932424 housing to form an electrical connection a lithium battery pack, a lithium battery protection circuit board, a touch switch and a drive motor, and a positioning ring is fixedly coupled to the front side of the housing; wherein the drive motor has a drive shaft extending from the front side, the drive shaft Positioning at the axial center of the positioning ring and forming a ring tooth portion at the end, a heat sink is disposed behind the driving motor; a reduction gear set is disposed inside the positioning ring and includes a pair of rotating seats a planetary gear and a ring gear; wherein the rotating base is provided with a shaft hole having an inner diameter larger than the driving shaft and sleeved outside the driving shaft, and the middle portion of the rotating base corresponds to the rotating shaft a pair of planetary gear grooves are symmetrically formed in the ring gear portion, and a shaft column is formed on a front side portion of the rotating base; the two planetary gear systems are pivotally coupled to the rotating base by a shaft rod
環齒面，Ring tooth surface,
的前側面設有一枯卡片。There is a dry card on the front side.
設有一逻結孔， 工具，S亥殼體係由二半殼體相 设有一握把部，於該握把部結 八％動研磨工具，該軸桎於前端 該作動盤係設有一結合於該連結 月1J端的柏心位 連結孔的連結 5 200932424 頭。 本發明所提供充電式電動研磨工具，可以獲得的優點 及功效增進至少包括： 1 _本發明透過最佳化的設計思維，將充電式鋰電池 包、驅動馬達及相關的控制構造等組成構件，整合裝配設 置於機體的殼體内部，並透過減速齒輪組來驅動作動盤， 有效地違到將研磨工具的組成構造精簡化及輕巧化的效果Having a logic hole, the tool, the S-shell is provided with a grip portion from the two half-shells, and an eight-part grinding tool is attached to the grip portion, and the shaft is coupled to the front end of the actuating disc to be coupled to the Link to the connection of the cypress heart connection hole at the 1J end of the month 5 200932424 Head. The advantages and enhancements that can be obtained by the rechargeable electric abrasive tool of the present invention include at least: 1 _ The invention integrates a rechargeable lithium battery pack, a drive motor and related control structures into components by means of an optimized design thinking. The integrated assembly is arranged inside the casing of the machine body and drives the actuating disc through the reduction gear set, effectively eliminating the effect of simplifying the structure of the grinding tool and lightening the effect.
' 2.本發明於機體内部直接設置有充電式的鋰電池包 ’並直接由裡電池包來提供研磨卫具運轉時所需的電源， 能夠讓電動研磨工具於使用時無需外接動力源，有效 向電動研磨工具在操作使用上的便利性。 >3.本發明於作動盤的工作面設有枯卡片 諸如海棉、打壞紙及砂紙等 人y A寻谷種形式的研磨構 用，有效地提高電動研磨工具的實用效能。 * 〇 【實施方式】 為能詳細瞭解本發明的技術特徵及實用 照說明書的内容來眘 政’並可依 曰]η谷不實轭，玆進一步以如圖 施例，詳細說明如后： 不的較佳實 Μ本發明所提供充電式電動研磨工具的較佳〃 弟—至三圖所$，4 只知例係如 團所不忒研磨工具係包括有：— 結合於該槐魏Μ η& 機植（1 0)、一 ()則立而的減速齒輪組（2 0)、一 速齒輪組（20)安裝定位的定位蓋（3〇)，:用以將該減 輪組(20)傳動的作動盤(4〇)等構造；其中：-雙該減速齒 200932424 =體_係包含有一殼體⑴)，以及安裝結合於該 冗又體（1 1)的一錄雨*4 a、 电/匕（1 2)、一鋰電保護電路板（]3)、一觸 動^(14^、—按紐（15)、—驅動馬達（16)、—散熱片⑼ 及:疋位壤（18)等構件；其中，該殼體⑴）的内部為中空 / :寺卜觀禾狀概呈手搶態樣，如圖所示的殼體（1 1)係由 =威體（11A，11B)以螺栓鎖合、膠合或以高週波炫接等 用；r目::::Γ所組成，並於該殼體(11)形成有-方便於使 β 部(11”，該殼體⑴)於握把部⑴)的中空 Μ有—電池室（112)及-開關室（113)，並於握 把部（11)上方位置形成有一馬達室⑴4); 卫於握 前述的鋰電池包（彳？ U α )係了拆卸形態結合於該殼體 的電^=(112)位置’藉以提供電動研磨工具運轉所需 ’電源’則述的鐘電保護電路板(13)係設於 :置…電池包⑽形成電連接，藉以確保』 ΐ(ιι : ❹^⑴）與位於該機體（1G)内部的電路構造形成電連接， =空制該機體⑽的啟動或停止；前述的按沖5)传以 Z按壓形態結合於握把部（111)的前側，並且以後側壓 連結於該觸動開關（14); 蜀 前述的驅動馬達（彳6)孫# 枚说， 1 )仏又於馬達室（114)且與相關的雷 路^形成電連接，於該，驅動馬達（16)設有一朝前伸 =軸（161)，並於該驅動軸（161)的前端部設成_ ⑴4_，如二=(17)係設於馬達室 電路構造的控制丨。(17”等電子構件 ❹ ❹ 200932424 設於鄰近該散熱片（17) 生的通風、散熱作用，可利用散熱片⑴)戶斤產 正常運作.m 以保持各電子構件能夠長時間抽 w固〇相定位環（18)係為管狀環框形態且以後 ，，、口。固疋於该殼體（11)的 ^谈端 的驅動轴（161)伸設位於該定18^讓㈣馬達（16) if μ 吹证故（18)的抽心位置，哕〜 %(18)方；外周面設為一 ' 〜吒位 匹配卡扣形熊釺人 、/、 ）’並且後端係以凹凸 心”。5於兩半殼體（ΉΑ，11Β)之間，同日± 二定位拴（182)穿經哕它办卢H〇、 U ^利用 的前端面仙於㈣動馬達（16) 一藉以瓖邊疋位環（18)能夠精確地安裝定位。 趙A L第—至四圖所示’該減速齒輪組（2〇)係包括：—旋 ^二對結合於該旋轉座（21)的行星齒輪⑼，以及 環二方?疋位環⑽且同時與兩行星齒輪叫齒合的齒 〃中’ 5亥方疋轉座(2”係設為轉子形態且於朝向驅 ’’、、1 6)的後側軸心位設有一内徑大於該驅動軸。6”的 軸套孔（211)，讓該旋轉座（21)能夠以該轴套孔（2川套設 方；忒驅動軸（161)外部，並於該驅動軸（161)與該定位環 (18)之間塾設有—軸承（24);該旋轉座（21)於中段部位對應 於該驅動軸（1 61)所設環齒部（1 6 2)的位置，相對稱地開設 有對仃星齒輪槽（212)，前述的兩行星齒輪（22)係分別位 於該兩行星齒輪槽（21 2)且各利用一軸桿(221)樞設結合於 該旋轉座（21)，並且該兩行星齒輪（22)以對稱形態與該環 齒部（162)相嚙合，藉以能夠透過該環齒部（162)來嚙合驅 動該兩行星齒輪（22)轉動； 如述的旋轉座（21)於前側部位形成—轴柱（21 3 )，於該 8 200932424 轴柱(21 3)前端的軸心位凹設有一呈螺孔形態的連結孔 (214) ’前述的齒環（23)係套固設於該定位環（18)内周面位 置，並且於該齒環（23)的内周面設有一能夠與該兩行星齒 輪（22)相嚙合的環齒面（231)，藉以讓該兩行星齒輪（22)能 夠化著該齒環（23)的環齒面（231)繞行轉動，進而帶動該旋 轉座（21)旋轉。 如第二至四圖所示’該定位蓋（30)係罩蓋結合於該定 位竦（1 8)前側的環形蓋體，藉以讓該減速齒輪組（2〇)結合 定位於該定位環（18)與該定位蓋（3〇)之間，該定位蓋於 内周面設有與該定位環（18)所設外螺紋面（181)相螺合的内 螺紋面（31 )，並於該定位蓋（3〇)的前側轴心位置開設有一 供該旋轉座（21)所設軸柱（213)穿出的開孔（32)，並於該旋 轉座（21)與該定位蓋（30)之間墊設有一軸承（25)，藉以讓該 旋轉座（21)能夠靈活順暢地轉動； 如第一、二圖所不，該作動盤（4〇)係設有一圓形狀的 盤體（41 )，於該盤體（41)後側的軸心位置凸設有一呈螺桿 狀而可對正結合於該軸柱<2彳3)所設連結孔（214)的連結頭 (42)，並於該盤體（41)的前側設有一粘卡片（43)，如第三、 五圖所示，能夠讓諸如海棉研磨件（5〇)、打躐紙研磨件 (60)或砂紙研磨件（70)等各種研磨構件，結合於該作動盤 (40)來進行研磨作業； 如此，利用前述設具充電式鋰電池包（12)與驅動馬達 (16)的機體（10)、受驅動馬達（16)驅動的減速齒輪組（2〇)、 讓減速齒輪組（20)安裝定位的定位蓋（3〇)，以及結合於減 9 200932424 速齒輪組（20)的作動盤（ 0f, _ ^ ^ 〇)寺構造，組構成如第一、三圖 所不的充電式電動研磨工具。 請參閱第二、二、 一、四圖所示’當按壓按鈕（15)抵壓觸 動開關（14)時，益需外 … 接動力源’即可以控制驅動馬達 ()以鐘電池包(12)所提供的電源而啟動運轉；該驅動馬 ()能夠透過該驅動轴（161)所設的環齒部（162)哺合傳 =兩:星齒輪（22)沿著齒環（23)繞轉，達到以減速的形態 ❹ ▼動紅轉座（21)旋轉，讓結合於旋轉座（21)的作動盤（40)能 夠以適當轉速快速旋轉，葬 付错以τ動堵如海棉研磨件（50)等 研磨構件快速旋轉，提 促仏便用者對工件進行研磨或打蠟等 表面處理。 ^ ° 一、三圖所示，本發明於海棉研磨件（50)的後側 設有-能夠與作動盤（40)所設枯卡片（43)相枯扣的枯扣片 (51)，即可將海棉研磨件(5〇)結合於作動盤(4〇)來進行研磨 工作；如第五圖所示，本發明同樣只要於打蠛紙研磨件 (6〇)或砂紙研磨件（70)的後側設置一粘扣片（5彳），即可自由 地將打蠟紙研.磨件（60)或砂紙研磨件（7〇)結合於作動盤（4〇) 來進行研磨工作，實施運用相當地靈活簡便。 以上所述，僅是本發明的較佳實施例，並非對本發明 作任何形式上的限制，任何所屬技術領域中具有通常知識 者，若在不脫離本發明所提技術方案的範圍内，利用本發 明所揭示技術内容所作出局部更動或修飾的等效實施例， 並且未脫離本發明的技術方案内容，均仍屬於本發明技術 方案的範圍内。 200932424 【圖式簡單說明】 第-圖係本發明較佳實施例之立體結構圖。 第二圖係本發明較佳實施例之組成構件分 第二圖係本發明較佳實施例之組合剖面圖。θ Q圖。 之參考 第四圖係本發明較佳實施例局部放大之結構气 第五係係本發明較佳實施例搭配不同研磨構:1 示意圖。 ❹ 【主要元件符號說明】 (10)機體 (11)殼體 (11A，11B)半殼體 (1 1 1)握把部 (Ί 1 2)電池室 (113)開關室 (114)馬達室 (12)鋰電池包 (13)鐘電保護電路板 (14)觸動開關 (1 5)按紐 (1 6)驅動馬達 (1 61)驅動車由 (1 6 2)環齒部 (1 7)散熱片 (1 71)控制 IC (1 8)定位環 (1 8 2)定位栓 (1 81)外螺紋面 (2 0)減速齒輪組 (21)旋轉座 (211)轴套孔 (212)行星齒輪槽 (21 3)轴柱 (214)連結孔 (22)行星齒輪 (2 21)車由桿 (23)齒環 (24,25)軸承 (231)環齒面 200932424 (30)定位蓋 (31)内螺紋面 (32)開孔 (40)作動盤 (41)盤體 (42)連結頭 (43)粘卡片 (50)海棉研磨件 (51)钻扣片 (60)打蠟紙研磨件 (61)粘扣片 (70)砂紙研磨件 (71)粘扣片' 2. The invention is provided with a rechargeable lithium battery pack directly inside the body' and directly supplies the power supply required for the operation of the grinding aid by the inner battery pack, so that the electric grinding tool can be used without an external power source, effectively The convenience of using the electric grinding tool in operation. >3. The working surface of the present invention is provided with a dry card such as sponge, broken paper and sandpaper, and the like, which effectively improves the practical performance of the electric grinding tool. * 〇 [Embodiment] In order to understand in detail the technical features of the present invention and the contents of the utility manual, the policy can be based on the fact that the η谷不不 yoke is further illustrated in the following example: Preferably, the preferred embodiment of the rechargeable electric abrasive tool of the present invention is a three-figure model, and the four examples are as follows: the abrasive tooling system includes: - a combination with the 槐 Μ η η &η; (1 0), one () vertical reduction gear set (20), first speed gear set (20) mounted positioning positioning cover (3〇), for the reduction wheel set (20 a transmission disk (4〇) and the like; wherein: - the double reduction gear 200932424 = body _ includes a casing (1)), and a recorded rain coupled to the redundant body (1 1) * 4 a , electric / 匕 (1 2), a lithium battery protection circuit board (] 3), a touch ^ (14 ^, - button (15), - drive motor (16), - heat sink (9) and: 疋 position ( 18) and other components; wherein, the inside of the casing (1)) is hollow /: the temple is a hand-like state, and the casing (1 1) as shown in the figure is composed of = Wei (11A, 11B) ) with bolt lock , glued or high-frequency splicing, etc.; r mesh:::: Γ is formed, and formed in the casing (11) - convenient to make the β portion (11", the casing (1)) in the grip portion (1)) The hollow chamber has a battery chamber (112) and a switch chamber (113), and a motor chamber (1) 4) is formed above the grip portion (11); the lithium battery pack (彳? The electric power protection circuit board (13) described in the disassembly form is coupled to the electric ^=(112) position of the housing to provide the electric power tool for operation. The battery protection circuit board (13) is set to: the battery pack (10) Forming an electrical connection to ensure that ΐ(ιι : ❹^(1)) is electrically connected to a circuit structure located inside the body (1G), = starting or stopping the body (10); the aforementioned pressing 5) is transmitted by Z The pressing form is coupled to the front side of the grip portion (111), and the rear side is pressure-bonded to the touch switch (14); 蜀 the aforementioned drive motor (彳6) Sun #1, 1) 仏 again in the motor chamber (114) And forming an electrical connection with the associated lightning path ^, wherein the driving motor (16) is provided with a forward-facing = shaft (161), and the front end portion of the driving shaft (161) is set to _ (1) 4_, such as two = (17) is set in the motor room circuit structure control 丨. (17" and other electronic components ❹ ❹ 200932424 is located adjacent to the heat sink (17) of the ventilation, heat dissipation, the use of heat sink (1)) The utility model operates normally. m to keep the electronic components capable of pumping for a long time. The positioning ring (18) is in the form of a tubular ring frame and then, at the mouth. The drive shaft (161) fixed to the end of the casing (11) is located at the center of the pinch of the fixed (4) motor (16) if μ blown (18), 哕~%(18) Square; the outer peripheral surface is set to a ' 吒 position matching snap-shaped bear 釺, /, ) 'and the back end is embossed." 5 between the two halves of the shell (ΉΑ, 11 Β), the same day ± two positioning 拴 ( 182) After passing through it, the front end face of the U H, U ^ is used to (4) the moving motor (16). By means of the edge clamping ring (18), the positioning can be accurately mounted. Zhao AL-to-four 'The reduction gear set (2〇) includes: - a pair of planetary gears (9) coupled to the rotating base (21), and a ring-shaped two-way clamping ring (10) and simultaneously meshing with the two planetary gears In the middle of the ', the '5 疋 疋 疋 ( ( 2 2 2 2 2 2 2 2 2 2 2 2 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 a 6" sleeve hole (211), such that the rotary seat (21) can be bored with the sleeve (2), the drive shaft (161), and the drive shaft (161) and the positioning ring (18) is provided with a bearing (24); the rotating seat (21) is relatively open at a position corresponding to a ring tooth portion (1 6 2) of the drive shaft (1 61) at a middle portion For the comet gear slot (212), the two planetary gears (22) are respectively located in the two planetary gear slots (21 2) and are pivotally coupled to the rotating base (21) by a shaft (221), and The two planetary gears (22) mesh with the ring gear portion (162) in a symmetrical manner, thereby being capable of meshingly driving the two planetary gears (22) through the ring gear portion (162); the rotating base (21) as described A shaft column (21 3 ) is formed on the front side portion, and a connecting hole (214) in the form of a screw hole is formed in the axial center of the front end of the shaft of the 2009 20092424 shaft column (21 3). The aforementioned ring gear (23) sleeve is sleeved. The inner circumferential surface of the positioning ring (18) is fixed, and a ring tooth surface (231) capable of meshing with the two planetary gears (22) is disposed on an inner circumferential surface of the ring gear (23). The two planetary gears (22) can rotate around the ring tooth surface (231) of the ring gear (23), thereby driving the rotating base (21) to rotate. As shown in the second to fourth figures, the positioning cover (30) attaching a cover to the annular cover on the front side of the positioning cymbal (18), thereby allowing the reduction gear set (2〇) to be coupled between the positioning ring (18) and the positioning cover (3〇) The positioning cover is provided with an internal thread surface (31) screwed to the external thread surface (181) of the positioning ring (18) on the inner circumferential surface, and is disposed at the front axial center of the positioning cover (3〇). An opening (32) is provided for the shaft post (213) provided by the rotating base (21), and a bearing (25) is disposed between the rotating base (21) and the positioning cover (30). Therefore, the rotating seat (21) can be flexibly and smoothly rotated; as shown in the first and second figures, the operating plate (4〇) is provided with a circular disk body (41) behind the disk body (41). A coupling head (42) which is screw-shaped and can be coupled to the coupling hole (214) provided in the shaft column <2彳3) is protruded from the axial center of the side, and is on the front side of the disk body (41). With a sticky card (43) As shown in the third and fifth figures, various abrasive members such as a sponge polishing member (5 inch), a squeegee polishing member (60) or a sandpaper polishing member (70) can be combined with the operating plate (40). To perform the grinding operation; thus, the above-mentioned rechargeable lithium battery pack (12) and the body (10) of the drive motor (16), the reduction gear set (2〇) driven by the drive motor (16), and the reduction gear are used. Group (20) is equipped with a positioning positioning cover (3〇), and an operating plate (0f, _ ^ ^ 〇) temple structure combined with the reduction of 2009 20092424 speed gear set (20). The group composition is as shown in the first and third figures. Cordless electric grinding tool. Please refer to the second, second, first and fourth figures. 'When pressing the button (15) to press the touch switch (14), the power supply can be controlled... The power source can be controlled to drive the motor () to the battery pack (12) The power supply is started to operate; the drive horse () can be fed through the ring gear (162) provided by the drive shaft (161) = two: the star gear (22) is wound along the ring gear (23) Turn, in the form of deceleration ❹ ▼ Rotate the red seat (21) to rotate, so that the operating plate (40) combined with the rotating seat (21) can be rotated at an appropriate speed, and the turret is blocked by the τ. The grinding member such as the member (50) rotates rapidly to promote the surface treatment of the workpiece by grinding or waxing the workpiece. ^ ° As shown in Figs. 1 and 3, the present invention is provided on the rear side of the sponge polishing member (50) - a dead button piece (51) capable of being buckled with the dry card (43) provided on the operating plate (40), The sponge grinding member (5 〇) can be combined with the operating plate (4 〇) to perform the grinding work; as shown in the fifth figure, the present invention is equally applicable to the squeegee grinding member (6 〇) or the sandpaper grinding member ( 70) The back side is provided with a fastening piece (5彳), and the waxing paper grinding device (60) or sandpaper grinding member (7〇) can be freely combined with the operating plate (4〇) for grinding work. The implementation is quite flexible and simple. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. The equivalent embodiments of the present invention are not limited to the details of the technical solutions of the present invention, and are still within the scope of the technical solutions of the present invention. 200932424 [Brief Description of the Drawings] The first drawing is a perspective structural view of a preferred embodiment of the present invention. The second drawing is a sectional view of a preferred embodiment of the present invention. θ Q map. Reference is made to the fourth embodiment, which is a partially enlarged structural gas of the preferred embodiment of the present invention. The fifth system is a schematic diagram of a preferred embodiment of the present invention with different grinding structures: ❹ [Main component symbol description] (10) Body (11) Housing (11A, 11B) Half housing (1 1 1) Grip (Ί 1 2) Battery compartment (113) Switching compartment (114) Motor compartment ( 12) Lithium battery pack (13) clock protection circuit board (14) touch switch (1 5) button (1 6) drive motor (1 61) drive car by (1 6 2) ring gear (1 7) heat dissipation Plate (1 71) Control IC (1 8) Positioning ring (1 8 2) Positioning pin (1 81) External thread surface (20) Reduction gear set (21) Rotating seat (211) Bushing hole (212) Planetary gear Slot (21 3) Shaft column (214) Connecting hole (22) Planetary gear (2 21) Vehicle by rod (23) Ring gear (24, 25) Bearing (231) Ring tooth surface 200932424 (30) Positioning cover (31) Internal thread surface (32) opening (40) Actuating disc (41) Disc body (42) Connecting head (43) Sticking card (50) Sponge grinding piece (51) Drilling cleat piece (60) Wax paper grinding piece ( 61) Velcro piece (70) sandpaper grinding piece (71)
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