M332584 八、新型說明： 【新型所屬之技術領域】 一種應用於電動削鉛筆機，用以切換供電模式 的安全裝置。 【先前技術】 按，傳統鉛筆對於從事書寫、美工或是美勞製 圖的使用者而言，依然有其存在的必要性，由於傳 統鉛筆使用前，必須將外部木質層及内部筆芯削成 適當錐度，除了方便使用者握持外，還能晝出適當 粗細的線條，但由於利用手工削鉛筆相當耗時，且 不易削出適當錐度而影響使用，故有電動削錯筆機 的出現。 請參閱「第1圖」，為習知電動削鉛筆機的結構 示意圖，如圖中所示，其電動削鉛筆機1 〇主要係包 括：一外殼101、一電動馬達102、一減速齒輪組 1 0 3、一刀軸1 0 4及一開關1 〇 5，將電動馬達1 〇 2、 減速齒輪組1 0 3及刀軸1 〇 4組設於外殼1 〇 1内部， 而外殼1 01正面係組設有一可轉動的選擇轉盤 106，以及組設一用來收集鉛筆屑的收集盒ι〇7，其 選擇轉盤106上並徑向成型有複數個不同直徑的選 ，擇孔1061，且刀軸104相對於外殼1〇1上成型有一 穿孔1011，選擇轉盤106經轉動後，可使其中一選 擇孔1061對齊位穿孔1011，將開關105組設於刀 M332584M332584 VIII. New description: [New technical field] A safety device used in electric pencil sharpener to switch the power supply mode. [Prior Art] According to traditional Chinese pencils, there is still a need for users who are engaged in writing, art or art planning. Since traditional pencils must be used, external wood layers and internal refills must be cut into appropriate. The taper is not only convenient for the user to hold, but also the appropriate thickness of the line. However, since the manual pencil sharpening is time consuming and it is difficult to cut the appropriate taper to affect the use, there is an electric offset pen machine. Please refer to FIG. 1 for a schematic view of the structure of a conventional electric pencil sharpener. As shown in the figure, the electric pencil sharpener 1 〇 mainly includes: a casing 101, an electric motor 102, and a reduction gear set 1 0 3, a cutter shaft 1 0 4 and a switch 1 〇 5, the electric motor 1 〇 2, the reduction gear set 1 0 3 and the cutter shaft 1 〇 4 are set inside the outer casing 1 〇1, and the outer casing 101 front group A rotatable selection dial 106 is provided, and a collection box ι 7 for collecting pencil shavings is arranged, which is selected on the turntable 106 and radially formed with a plurality of different diameters, the selection holes 1061, and the cutter shaft 104 A perforation 1011 is formed on the outer casing 1〇1, and after the selection dial 106 is rotated, one of the selection holes 1061 can be aligned with the perforation 1011, and the switch 105 is assembled to the knife M332584.
軸i〇4與選擇轉盤1〇6間，又，電動馬達ι〇2係藉 由減速歯輪組1〇3而與刀軸104作動力銜接，宜^ 關105又與一供電裝置108電性連接，因此可提供 電動馬達102運轉所需的電力；使用時，由於市面 上所販售的鉛筆20直徑各有不同，因此，使用者必 須先旋轉選擇轉盤106,而選出適用鉛筆2〇直徑的 選擇孔l〇6i，就可將鉛筆20***選擇孔1〇61 了插 入時，鉛筆20會觸動開關105以驅動電動馬達1〇2 運轉，並帶動刀軸104轉動對鉛筆2〇進行刨削； 綜上所述，這類的電動削鉛筆機1〇有下列缺點： 一、由於開關105係固設於外殼1〇1内，旋轉 選擇轉盤106至不同的選擇孔ι〇61時，其 開關105相對於各選擇孔1〇61的位置都不 同，尤其疋選擇直徑較小的選擇孔1 〇 6 1 時，常有覆蓋選擇孔1061面積過大的問 通’造成船筆2 0不易***，如果改變開關 105的設置位置，又有可能造成在使用較大 直徑的選擇孔1061時，鉛筆20無法順利 觸動開關105 ; 、加上這類的電動削鉛筆機1 0大多是觸動開 關105後，就會自動進行刨削，若選擇直 徑較大的選擇孔1061，使用者或兒童可能 不慎將手指***，而有被刀軸104割傷的 危險性。 6 M332584 【新型内容】 為增加電動削鉛筆機使用的 例從用的方便性，以及降低 使用時的危險性，本創作人I掉、 卞人犮精心研究，終設計出 一種嶄新的電動削鉛筆機安全裝置。 本創作之主要目的，旨在裎 仏 曰在徒供一種便於刨削直 徑的鉛筆，並可提昇安全性的 汁文注的電動削鉛筆機安全裝Between the axis i〇4 and the selection dial 1〇6, the electric motor ι〇2 is coupled to the cutter shaft 104 by the deceleration 歯 wheel set 1〇3, and the electric switch 105 is electrically connected to a power supply device 108. The connection can be used to provide the electric power required for the operation of the electric motor 102. In use, since the diameters of the pencils 20 sold on the market are different, the user must first rotate the selection dial 106 and select the diameter of the pencil 2 适用. By selecting the hole l〇6i, the pencil 20 can be inserted into the selection hole 1〇61. When inserted, the pencil 20 will touch the switch 105 to drive the electric motor 1〇2 to operate, and drive the cutter shaft 104 to rotate to cut the pencil 2〇; In summary, the electric pencil sharpener 1 has the following disadvantages: 1. Since the switch 105 is fixed in the casing 1〇1, when the rotary dial 106 is rotated to a different selection hole ι 61, the switch 105 The position of each of the selection holes 1 〇 61 is different, in particular, when the selection hole 1 〇 6 1 having a small diameter is selected, there is often a problem that the area of the selection selection hole 1061 is too large, causing the ship pen 20 to be difficult to insert, if it is changed The setting position of the switch 105 may cause When the larger diameter selection hole 1061 is used, the pencil 20 cannot smoothly touch the switch 105; and when the electric pencil sharpener 10 of this type is mostly the touch switch 105, the planing is automatically performed, if a larger diameter is selected. The hole 1061 is selected, and the user or child may accidentally insert a finger without the risk of being cut by the cutter shaft 104. 6 M332584 [New Content] In order to increase the convenience of the use of the electric pencil sharpener, and to reduce the risk of use, the author I dropped, and the singer carefully studied and finally designed a brand-new electric pencil sharpener. Machine safety device. The main purpose of this creation is to 裎 曰 供 供 供 供 供 供 供 供 供 供 供 供 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动 电动
置0 為達上述目的，本創作之電動削鉛筆機安全裝 :，其至少包括一支架、一選擇轉盤、一滑動塊、 -第-開關及一第二開關，而電動削鉛筆機主要係 由厂外殼、一電動馬達、一減速齒輪組及一刀軸所 、、且成其中’電動馬達、減速齒輪組及刀軸係組設 於外成内，並在外殼正面成型有一穿孔及一限位 孔，其刀軸係相對於外殼的穿孔，而選擇轉盤二面 分別成型有複數個選擇孔及一環形滑槽，其環形滑 槽與各選擇孔的距離各不相同，以將選擇轉盤組設 於外设的外侧，而滑動塊係組設於外殼内侧的一支 架上’且滑動塊上並成型有一凸柱，其凸柱係穿過 限位孔而插置於環形滑槽内，因此在使用時，透過 方疋轉選擇轉盤的動作，可使其中一選擇孔對準外殼 上的穿孔，以便將鉛筆***穿孔進行刨削，又，旋 轉選擇轉盤時，其滑動塊會沿著環形滑槽的路徑上 下移動’相對於組設在滑動塊上的第一開關，也會 M332584 ik之上下移動’使第一開關一直保持於選擇孔的㈤ 適當位置，m關並與_供電裝置電性連接， 而便於各種不同直徑的鉛筆順利地***，使鉛筆插 入後觸動第-開關啟動電動馬達運轉，經減速齒= 組將動力銜接至刀軸；而第二開關係位於第一開^ 一侧，且與第一開關作電性連接，又，其滑動塊一 側係成型有一凸緣，用來對應選擇轉盤上較大直徑 的選擇孔，亦即旋轉選擇轉盤至大直徑的選擇= 時，可帶動凸緣會向上移動並觸動第二開關，使第 一開關與一供電裝置間呈短路狀態，再者，第二開 關並與外殼上的一按鈕電性連接，當使用者按壓按 鈕後，可使第一開關復歸而驅動供電裝置繼續供 電，如此一來，當旋轉選擇轉盤至較大直徑的選擇 孔時，第一開關係呈失效的狀態，使用者將手指放 入選擇孔内也不會啟動電動馬達運轉，使用者必須 手動按壓按鈕才能重新啟動電動削鉛筆機，因此， 可大幅降低使用者或小孩不慎將手指***選擇孔 内’而被刨削的危險性。 為使貴審查委員能清楚了解本創作之内容，僅 以下列說明搭配圖示，敬請參閱。 【實施方式】 請參閱「第2圖」及「第3圖」，分別為本創作 較佳實施例的立體外觀圖及立體分解圖，如圖中所 8 M332584 示’其電動削鉛筆機30係由一外殼301、一電動馬 違302、一減速齒'輪303組及一刀軸304所組成， 其中，外殼301的正面係組設有一按鈕4〇51及一選 擇轉盤402，欲刨削鉛筆50時，得先旋轉選擇轉盤 402 ’以將選擇轉盤402轉動至至對應鉛筆5〇直徑 的選擇孔4021，使選擇孔4021與外殼301的一穿 孔3 011相對，才能在船筆5 〇***時，穿過選擇孔 4021並到達穿孔3011内，而藉由穿孔3〇u内面一 側的刀軸304進行刨削，鉛筆50在刨削時係與選擇 孔4021完全靠合，而可增加刨削時的穩定性，並提 昇刨削鉛筆50的品質，前述電動削鉛筆機安全裝置 40至少係包括：一支架4〇1，其中央係成型有連通 外殼301穿孔3011及刀軸304的連通孔4011，鄰 近此連通孔4011並成型有一滑槽4〇12，且於鄰近 滑槽4012 —侧成型有一第一容置槽4013 ; 一選擇 轉盤4 0 2 ’其係組設於前述外殼3 〇 1的正面，在外 威3 01正面適當位置係成型有一穿孔3 011，而穿孔 3 011 —側並成型有一限位孔3 〇 1 2，又，選擇轉盤 402正面係徑向成型有複數個選擇孔4021，並使各 選擇孔4021都可對應穿孔3〇11的位置，而在選擇 轉盤4 0 2背面係成型有一環形滑槽4 〇 2 2，其環形滑 槽4 022至各選擇孔4〇21間的距離相同；一滑動塊 403，其係活動組設於外殼3〇1内部，在活動塊 上係成型有一凸柱4031，凸柱4031可穿過外殼301 9 M332584 的限位孔3012，而插置於環形滑槽4〇22内，又， 滑動塊403 一側並成型有-凸、緣4032,當滑動塊403 安裝時，凸緣4032係對應較大直徑的選擇孔4〇21 的位置；一第一開Μ 404’其係組設於滑動塊4〇3 上’而第一開Μ 404係電性連接至一供電裝置3〇5, 可藉由供電裝置305提供前述電動馬達3〇2運轉所 而的電力》亥電動馬達302藉由前述減速齒輪組3〇3Set to 0 for the above purpose, the electric pencil sharpener of the present invention is safely equipped: it comprises at least one bracket, a selection dial, a sliding block, a - switch and a second switch, and the electric pencil sharpener is mainly composed of a factory casing, an electric motor, a reduction gear set and a cutter shaft, and wherein the electric motor, the reduction gear set and the cutter shaft are assembled in the outer casing, and a perforation and a limit hole are formed on the front surface of the casing. The cutter shaft is perforated with respect to the outer casing, and the two sides of the selection dial are respectively formed with a plurality of selection holes and an annular sliding groove, and the distance between the annular sliding groove and each of the selection holes is different to set the selection dial to The outer side of the peripheral device, and the sliding block is assembled on a bracket on the inner side of the outer casing. The sliding block is formed with a protruding post, and the protruding column is inserted into the annular sliding slot through the limiting hole, so that the utility model is used. When the rotation of the selection dial is performed, one of the selection holes can be aligned with the perforation on the outer casing to insert the pencil into the perforation for shaving, and when the selection dial is rotated, the sliding block will follow the annular chute. On the path Move down 'relative to the first switch set on the slider, also move M332584 ik up and down' so that the first switch remains in the (5) proper position of the selection hole, m is closed and electrically connected to the _ power supply device, and It is convenient for the pencils of different diameters to be inserted smoothly, so that after the pencil is inserted, the first switch is activated to start the electric motor, and the gear is connected to the cutter shaft through the reduction gear = group; and the second opening relationship is located on the first opening side, and The first switch is electrically connected, and a flange is formed on one side of the sliding block for correspondingly selecting a larger diameter selection hole on the turntable, that is, when the selection of the rotary dial is selected to the large diameter, the convexity can be driven. The edge moves up and touches the second switch to make a short circuit between the first switch and a power supply device. Further, the second switch is electrically connected to a button on the outer casing, and when the user presses the button, the first switch A switch resets to drive the power supply device to continue to supply power, so that when the selection dial is rotated to the larger diameter selection hole, the first open relationship is in a failed state, and the user puts the finger into the selection hole. The electric motor will not start running, the user must manually press the button to restart the electric pencil sharpener, therefore, the user can be greatly reduced or child accidentally inserting a finger into the hole in the selection 'is planing risk. In order for your review board to have a clear understanding of the content of this creation, please refer to the following instructions only. [Embodiment] Please refer to "2nd drawing" and "3rd drawing", which are respectively a three-dimensional external view and an exploded view of the preferred embodiment of the present invention, as shown in Fig. 8 M332584 shows 'the electric pencil sharpener 30 series The utility model is composed of a casing 301, an electric horse violation 302, a reduction gear 'wheel 303 group and a cutter shaft 304. The front side of the outer casing 301 is provided with a button 4〇51 and a selection dial 402 for shaving the pencil 50. At the same time, the selection dial 402' is first rotated to rotate the selection dial 402 to the selection hole 4021 corresponding to the diameter of the pencil 5, so that the selection hole 4021 is opposed to a perforation 3 011 of the outer casing 301, so that when the pen 5 is inserted, Passing through the selection hole 4021 and reaching the perforation 3011, and shaving by the cutter shaft 304 on the inner side of the perforation 3〇u, the pencil 50 is completely engaged with the selection hole 4021 during the shaving, and the planing time can be increased. The stability of the pencil sharpener 50 is improved, and the electric pencil sharpener safety device 40 includes at least a bracket 4〇1, and a communication hole 4011 connecting the through hole 3011 of the outer casing 301 and the cutter shaft 304 is formed in the center. Adjacent to the communication hole 4011 and formed with a slip 4〇12, and a first receiving groove 4013 is formed on the side of the adjacent chute 4012; a selection turntable 4 0 2 ' is set on the front surface of the outer casing 3 〇1, and is formed at the proper position on the front side of the outer wei 3 01 There is a perforation 3 011, and the perforation 3 011 is formed on the side and a limiting hole 3 〇1 2 is formed. Further, the front surface of the selection dial 402 is radially formed with a plurality of selection holes 4021, and each selection hole 4021 can correspond to the perforation 3 The position of the 〇11, and an annular chute 4 〇2 2 is formed on the back surface of the selection dial 408, the distance between the annular chute 4 022 and the selection holes 4〇21 is the same; a sliding block 403 is active The assembly is disposed inside the outer casing 3〇1, and a protruding post 4031 is formed on the movable block. The protruding post 4031 can pass through the limiting hole 3012 of the outer casing 3019 M332584, and is inserted into the annular sliding slot 4〇22. One side of the sliding block 403 is formed with a convex portion and a rim 4032. When the sliding block 403 is mounted, the flange 4032 corresponds to the position of the larger diameter selection hole 4〇21; a first opening 404' is set in the first opening 404' The sliding block 4〇3 is on the top and the first opening 404 is electrically connected to a power supply device 3〇5, which can be powered Counter 305 provides the operation of the electric motor and a power 3〇2 "Hai 302 by the electric motor reduction gear set 3〇3
而與前述刀轴304作動力銜接；U 一第二開關 405’其係組設於第一開關4〇4 一侧，第二開關4〇5 係與滑動塊403的凸緣4032互呈相對，其凸緣漏 並與一按鈕4051電性連接，又，將第二開關405電 性連接於第一開關404與供電裴置3〇5間，其按鈕 4〇51並可設置於外殼3〇1頂面，或是外殼3〇ι正面 鄰近於選擇轉盤402的一侧，由於第二開關4〇5係 為一二段式開關，當被凸緣4032靠觸後，會作第一 段的動作’而使第一開關4〇4呈現短路，再按下按 鈕4 0 51 ’就會作第二段的動作，而使呈現短路的第 一開關4 0 4重新復歸。 明參閱「第4圖」，為本創作較佳實施例的動作 不思圖（一），如圖中所示，當旋轉前述選擇轉盤 402至較大直徑的選擇孔4〇21時，其滑動塊的 凸柱4031會沿著環形滑槽4〇22線性移動，而帶動 /月動塊4 0 3向上移動，其滑動塊4 〇 3 一側的凸緣4 〇 3 2 就S觸動第一開關4 〇 5，使電性連接於第二開關4 〇 5 10 M332584 的第一開Μ 404呈現短路狀態 3〇5無法供電，但使用者還是可的供電襄置 趣觀，使第二開關405與第—開前述按 為㈣狀態，以糊前述*** 閱「第5圖」，為本創作較 ^ r ^ 例的動作示意圖 (一），如圖中所示，當再 ，古& 疋轉遠擇轉盤402至較 小直徑的選擇孔日夺，其滑動塊4〇3就會向 動，而使凸緣4032與第二開關4〇5分開 關404自然就重新復歸呈導通狀能。 、汗 :再參閲「第6圖」，為本創“一較佳實施例 的：構示意圖，如圖中所示，係在支帛4〇1鄰近第 一容置槽4013 -側’成型有—第二容置# 4〇14， 以將一第三開關406組設於第二容置槽4〇14内，而 相對第三開關406在枝3〇1上係設置有一按鈕 4〇61，其第三開關4〇6係與前述供電裝置3〇5及按 鈕4061電性連接，當前述第二開關4〇5被滑動塊 403的凸緣4〇32靠觸，而使第一開關4〇4呈短路狀 悲時’使用者還是可以藉由按壓按鈕4 0 61，使前述 供電裝置3 0 5持續供電。 綜上所述，本創作係具有下列優點： 1 ·當旋轉轉盤至對應的選擇孔時，可帶動滑動 塊往復移動，以使第一開關隨著移動至對應 選擇孔的最適當位置，因此，各種直徑的船 筆都能順利被***刨削； 丨 11 M332584 再者，其利用複數組開關作為安全設計，♦ :用者旋轉選擇轉盤至較大直徑的選擇： 時：會自動切斷供電，並藉由手動按壓按鈕 電而&低使用者或小孩不慎將手指*** 選擇孔内，被刨削的危險性。 唯，以上所述者，僅為本創作之較佳之實施合 而已’並非用以限定本創作實施之範圍；任何^ 此技藝者，在不脫離本創作之精神與範圍下所作: 均等變化與修飾’皆應涵蓋於本創作之專利範圍内 綜上所述，本創作電動削鉛筆機安全裝置之 效，係具有新型之「產業可利用性」、「新賴性」^ 「進步性」等專利要件；申請人爰依專利法之規定 向 鈞局提起新型專利之申請。 12 M332584 【圖式簡單說明】 第1圖，為習知電動削鉛筆機的結構示意圖。 第2圖，為本創作較佳實施例的立體外觀圖。 第3圖，為本創作較佳實施例的立體分解圖。 第4圖，為本創作較佳實施例的動作示意圖（一）。 第5圖，為本創作較佳實施例的動作示意圖（二）。 第6圖，為本創作另一較佳實施例的構造示意圖。 【主要元件符號說明】 10 電動削鉛筆機 101 外殼 1011 穿孔 102 電動馬達 103 減速齒輪組 104 刀軸 105 開關 106 選擇轉盤 1061 選擇孔 107 收集盒 108 供電裝置 20 鉛筆 30 電動削鉛筆機 301 外殼 3011 穿孔 13 M332584 3012 限位孔 30 2 電動馬達 303 減速齒輪組 304 刀軸 305 供電裝置 40 電動削鉛筆機安全裝置 401 支架 4011 連通孔 4012 滑槽 4013 第一容置槽 4014 第二容置槽 402 選擇轉盤 4021 選擇孔 4022 環形滑槽 403 滑動塊 4031 凸柱 4032 凸緣 404 第一開關 405 第二開關 4051 按紐 406 第三開關 4061 按鈕 50 鉛筆 14The second switch 405' is disposed on the side of the first switch 4〇4, and the second switch 4〇5 is opposite to the flange 4032 of the sliding block 403. The flange is leaked and electrically connected to a button 4051. Further, the second switch 405 is electrically connected between the first switch 404 and the power supply unit 3〇5, and the button 4〇51 is disposed on the housing 3〇1. The top surface, or the side of the outer casing 3〇 is adjacent to the side of the selection dial 402. Since the second switch 4〇5 is a two-stage switch, when the flange 4032 is touched, the first stage of the action is performed. 'When the first switch 4〇4 is short-circuited, pressing the button 4 0 51 ' will act as the second stage, and the first switch 4 0 4 exhibiting a short circuit will be reset again. Referring to "Fig. 4", the action of the preferred embodiment of the present invention is not considered (1). As shown in the figure, when the selection dial 402 is rotated to the larger diameter selection hole 4〇21, it slides. The studs 4031 of the block will linearly move along the annular chutes 4〇22, and the driving/moon moving blocks 410 will move upward, and the flanges 4 〇3 2 on the side of the sliding blocks 4 〇3 will activate the first switch. 4 〇 5, the first opening 404 electrically connected to the second switch 4 〇 5 10 M332584 is in a short-circuit state 3 〇 5 can not supply power, but the user is still able to supply power, so that the second switch 405 First—open the above-mentioned (4) state, and insert the “5th figure” into the above-mentioned book. This is a schematic diagram of the action of the creation (1), as shown in the figure, when again, the ancient & When the dial 402 is selected to the smaller diameter selection hole, the sliding block 4〇3 will move, and the flange 4032 and the second switch 4〇5 switch 404 will naturally return to the conduction state. Khan: Referring again to "Fig. 6", a schematic diagram of a preferred embodiment of the present invention, as shown in the figure, is formed adjacent to the first receiving groove 4013 - side of the support 4〇1 The second receiving unit 4 is disposed in the second receiving slot 4〇14, and the third switch 406 is disposed on the branch 3〇1 with a button 4〇61. The third switch 4〇6 is electrically connected to the power supply device 3〇5 and the button 4061. When the second switch 4〇5 is touched by the flange 4〇32 of the sliding block 403, the first switch 4 is When the 〇4 is short-circuited, the user can still supply the power supply device 350 by pressing the button 4 0 61. In summary, the author has the following advantages: 1 · When rotating the turntable to the corresponding When the hole is selected, the sliding block can be driven to reciprocate, so that the first switch moves to the most appropriate position corresponding to the selected hole, so that the pens of various diameters can be smoothly inserted into the planing; 丨11 M332584 Furthermore, Use the complex array switch as a safety design, ♦: the user rotates the selection dial to the larger diameter: Turn off the power supply, and by pressing the button manually, the risk of being cut by the user or child accidentally inserting the finger into the selection hole. Only the above is only the preferred implementation of the creation. The combination is not intended to limit the scope of the present invention; any skill of the art can be made without departing from the spirit and scope of the present invention: The effectiveness of the safety device for the electric pencil sharpener is based on the patent requirements such as the new "industry availability", "new dependence" and "progressiveness"; the applicant filed a new type with the bureau in accordance with the provisions of the Patent Law. Patent application. 12 M332584 [Simple description of the drawing] Fig. 1 is a schematic view showing the structure of a conventional electric pencil sharpener. Fig. 2 is a perspective view of the preferred embodiment of the present invention. Figure 3 is an exploded perspective view of a preferred embodiment of the present invention. Fig. 4 is a schematic view (1) of the operation of the preferred embodiment of the present invention. Figure 5 is a schematic view (2) of the operation of the preferred embodiment of the present invention. Figure 6 is a schematic view showing the construction of another preferred embodiment of the present invention. [Main component symbol description] 10 Electric pencil sharpener 101 Housing 1011 Perforation 102 Electric motor 103 Reduction gear set 104 Knife shaft 105 Switch 106 Selection dial 1061 Selection hole 107 Collection box 108 Power supply unit 20 Pencil 30 Electric pencil sharpener 301 Housing 3011 Perforation 13 M332584 3012 Limit hole 30 2 Electric motor 303 Reduction gear set 304 Tool shaft 305 Power supply unit 40 Electric pencil sharpener safety device 401 Bracket 4011 Connecting hole 4012 Chute 4013 First accommodating groove 4014 Second accommodating groove 402 Selecting carousel 4021 Select hole 4022 Circular chute 403 Slide block 4031 Post 4032 Flange 404 First switch 405 Second switch 4051 Button 406 Third switch 4061 Button 50 Pencil 14