1288684 九、發明說明： 【發明所屬之技術領域】 ‘ 本發明係關於一種研磨裝置，詳而言之係指一種研磨機， • 其具有一按紐，藉由按壓該按鈕可限制研磨機之轉軸轉動9而 本發明係可防止使用者誤觸該按鈕，以免造成研磨機損毀〇 【先前技術】 按，習用之研磨機，不論係氣動或電動形式者，係以其底 • 端所裝設之研磨片研磨物件。各種研磨片具有不同之研磨效 果，欲研磨不同之物件或研磨片磨耗時常須更換不同研磨片。 傳統之研磨機之更換研磨片之方式須操作二支扳手，以一 支扳手套住轉轴，使轉轴無法轉動，而另一支扳手則用以轉動 轉轴底端之螺帽，旋鬆螺帽後，將原先之研磨片取下，待新的 研磨片套設於轉轴後，再旋緊螺帽以固定研磨片。 由於操作二支扳手相當不便，為改進此一缺失，業界已開 發出於研磨機之機艘上設有一^^掣按鈕，按壓該按紐時，可使 按鈕往研磨機内部移入進而卡住研磨機之轉轴，使其無法轉 • 動。因此，拆裝研磨片時，只須以一支扳手轉動轉轴底端之螺 帽，即可更換研磨片。如種設計只須操作一支扳手，故操作上 較為便利。 然而，由於上揭結構只須直接按壓按紐即可卡止轉轴，經 " 實際使用發現，該按鈕容易發生被誤觸之情形，當研磨機在運 轉過程中，使用者不小心誤觸按钮時，轉動中之轉轴將與按姐 相互卡死，造成研磨機之毁損。 【發明内容】 本發明旨於解決上揭缺失而提供一種可卡定轉轴之研磨 機，其設有一按鈕裝置，按壓該按紐時可產生卡止研磨機之轉 1288684 轴之作用，使之無法轉動。而本發明之主要目的在於可防止誤 觸該按鈕造成研磨機損毀之情形。 【實施方式】 為使貴審查委員能進一步瞭解本發明之目的、特徵以及 所達成之功效，以下茲舉本發明若干較佳實施例，並配合圏式 詳細說明於后。 第一圖係本發明一較佳實施例之立體圖。 第二圖係第一圖之2-2剖線之剖面囷。 第三圖係本發明之按紐裝置之一較佳實施例之立艘圓。 第四圈係第三圖之分解立艘囷。 第五圖係第三圖之縱向剖面囷。 第六圖係第三圖之正視圓。 第七、八圖顯示第三圖之按钮裝置之操作狀態。 第九圖概同於第二圖，顯示研磨機之轉轴被卡止之狀態。 第十圖係本發明之按钮裝置之另一較佳實施例之正視圏。 第十一圓係本發明之按鈕裝置之再一較佳實施例之立艘 局部剖視圓。 第十二圓係第Η圓之分解立體圖。 第十三圖係第Η• —圓之縱向剖面圖。 第十四、十五圖係第十一圖之操作狀態。 第十六圖係按鈕裝置之再一較佳實施例之立想圓。 第十七圖係第十六圖之分解立體圖。 第十八圖係第十六圖之縱向剖面圖。 第十九、二十圖係本實施例之操作狀態。 第二十一圖係按鈕裝置之再一較佳實施例之立體圏。 6 1288684 第二十二圏係第二十一圖之分解立體圖。 請參閲第一、二圖，係本發明一較佳實施例所提供之研磨 機(10)，可為氣動或電動研磨機。其機艘(12)内設有一堪動轴， 可受一驅動機構(氣動研磨機為轉子，而電動研磨機為馬達)所 堪轉’進而傳動一轉轴(14)。於本實施例，联動轴及轉轴(14) 間係以伞形齿輪(16)傳動。轉轴(14)底端係套設一研磨片（18), 該研磨片受一螺帽(19)所迫緊❶一按鈕裝置(2〇),裝設於機體 (I2)，用以產生卡止轉轴(14)之作用。 本實施例所揭之按紐裝置(2〇)，請參閱第三至五囷，包含 有： 一紐座(30)，呈筒狀，具有一轴向通道(32)貫穿其内、外 端。一導槽(34)，設於該鈕座(30)周面，該導槽(34)之二端在鈕 座之轴向及徑向上均具有位差，其係由一孤形段(36)及一直線 段(38)所構成，如第六圖，該直線段(38)係位於導槽之後段， 並與鈕座之轴向平行❶導槽(34)於靠近鈕座(30)内端之後側壁 面並凸設一限止部(4〇)，該限止部臨近於導槽之前端，且限止 部(40)與導槽前端間並形成一凹入(41)。 一按紐構件(50)，本實施例係為一紐桿，具有一桿身(52) 及一設於桿身外端之頭部(54)。一導銷(55)，插設於該桿身 (52) °該紐桿(50)係穿設於鈕座(30)之通道(32)中，並可於鈕座 内位移，其二端並分別凸露於鈕座二端。該導銷(55)係容置於 該導槽(34)中。 一彈性機構，係一壓縮彈簧(60)。鈕座(3〇)之通道(32)具 有一直徑較大之容室(42)。該彈簧(60)係容置於該容室(42)中， 並套設於鈕桿(50)之桿身(52)。彈簧(60)之二端分別抵於鈕座内 之一肩面(44)及紐桿桿身(52)之一肩面(56)，如第五圖。該紐桿 (50)受彈簧(60)之彈性推動而保持往姐座(3〇)前端位移。 7 1288684 該按鈕裝置(20)係以其鈕座(30)固設於研磨機(ίο)之機體 (12)，紐桿(50)之内端位於機體内，而外端則位於機體外。請 參閱第三、六圖，於一般狀態下，該紐桿(50)受彈簧(6〇)之頂 持而位於一解除位置，此時，鈕桿之導銷(55)係定位於導槽(34) 前端❶於解除位置時，如第二圖所示，紐桿(5〇)並不會產生固 定轉轴(14)之作用。 欲卡定轉轴時，須使紐桿(50)往研磨機内移入。請參閱第 六圏，本發明並不允許使用者直接按壓鈕桿，若使用者直接按 麼知桿(50)時，將使該導銷(55)移往該凹入(41)，如第六圖假想 線所示，且受到限止部(40)所擋止。 於操作時，首先須轉動該叙桿(50)使其角位移，如第七圖 所示’當奴桿轉動一定角度使導銷(55)越過限止部(4〇)後，使 用者即可按壓紐桿(50)，钮桿即受導槽(34)之導引並沿著通道 (32)而往紐座(30)内端位移，當紐桿之導銷(55)到達導槽(34)後 端之直線段(38)時係位於一··^掣位置，如第八圖。復請參姑第 九圓，於卡掣位置時，鈕桿(50)係往機艘(12)内移入，其内端 並插入設於伞形齒輪(16)上之一插孔(⑹），藉此，轉轴(14)即 無法轉動。使用者可以一扳手轉動轉軸底端螺帽(19),以更換 研磨片（18)。 於更換完成後’釋放按壓纽桿(50)之施力，彈簧(6〇)即推 動知桿回復第三、六圖之狀態，由卡掣位置復歸於^除位置， 不再卡止轉轴(14)。紐桿回復時，導銷(55)係沿著導槽(34)運動。 由上述說明可知，欲使按紐裝置卡掣轉軸時，必須刻意地 先轉動紐桿，始能按廢钮桿，直接按壓紐桿時並盔法 轉轴之作用。故本發明具有保險作用，當操作者;使 ^過程中，按鈕裝置受到不經意或不正當之誤觸時，亦舍 掣轉轴，故可防止機件損壞。 8 1288684 第十，係本發明之按鈕裝置(20，)之另一較佳實施例，其結 構概與第三圓完全相同，不同之處僅在於，紐座(30，)之導;^ (34，)係完全為弧形段(36，），導槽末端並未設置直線段。 使用時’轉動紐桿(5〇,)，使導銷(55，)越過限止部(4〇，)後， 不論使用者轉動或按壓鈕桿，均可使鈕桿沿鈕座之轴向位移， 而到達卡掣位置。 第^一、十二圏係本發明之按鈕裝置(70)之再一較佳實施 例，具有一奴座、一按鈕構件及一彈性機構b 該鈕座(80)具有一貫穿内外端之通道(82)。一導銷(84),插 設於該钮座，其内端並伸入該知座中。 該按紐構件(9〇)包括一筒艘(91)及一紐桿(96),該筒想(91) 具有一轴向之通孔(92)。一導槽(93)，設於該筒艘(91)周面，具 有一直槽段(931)及一連接於直槽段後端之橫槽段(932)❶該鈕 桿(96)係穿伸於該筒體(91)之通孔(92)中，粗桿(96)二端均凸伸 出筒艘(91)，且钮桿之頭部(97)可容置筒艟之頭部(94)所設之凹 室(941)中，如第十三圖。該按鈕構件(9〇)係自紐座(8〇)外端裝 入鈕座中，可於鈕座内位移。筒體外端之頭部(94)係外露出鈕 座外端’而知桿之桿身係穿設於通道，其内端並凸伸出鈕座内 端。該導槽(93)係與該導銷(84)連接，如第十一圓。一限位部 (98)，為一銷，插接於鈕桿之桿身(99)，並嵌入於鈕座内端之 嵌槽(88)中，藉以使钮桿只能於鈕座之轴向位移，而無法轉 動❶該筒體可於該鈕桿上轉動。 該彈性機構(100)包括一壓縮彈簧(102)及一扭力彈簧 (104)。該壓縮彈簧(1〇2)係裝設於紐座之容室¢6)中，其二端分 別抵於紐座内之一肩面(89)及該筒體(91)後端，其彈性能係使 按紐構件保持往紐座外端位移。該扭力彈簧(1〇4)係套設於該 鈕桿(96)之桿身(99)，位於筒體(91)及钮桿間，其一端(1〇5)係 9 1288684 插接於筒體之插孔(911)，而另一端(i〇6)則定位於鈕椁之頭 後端面之凸部(961),該扭力彈簧係使該筒體於常態下保^ 一特定之角位置。 ' ' 該按鈕裝置(90)係裝設於研磨機之機體内，以供卡掣 轴。其裝設之狀態可參第一、二圓，容不赘述。’、 於常態下，按紐構件(90)受到壓縮彈簧(1〇2)之推動，而位 於解除位置，於此狀態時，按鈕構件係藉由限位部(98)觸及知 座之嵌槽(88)末端而定位。同時，該筒體(91)係受到扭力彈簧 (104)之扭轉而定位於一特定之角位置，即一安全位置，筒艘 係藉由導槽(93)之橫槽段(932)自由端抵於導銷(84)而定位' 欲操作該按鈕裝置時，須先轉動按鈕構件，始能再按壓按 鈕構件。首先，使用者將筒逋(91)轉動至第十四囷之作動位 置，，於作動位置時，導銷係移動至橫槽段(932)之另一端， 亦為直槽段(931)之末端。亦即，於作動位置時，筒體上之直 槽段(931)係正對於導銷(84)，接著，使用者即可按壓按鈕構件 (90)往鈕座(80)内端移入，移至第十五圖所示之卡掣位置，使 紐桿(96)内端插入傘形齒輪，而固定轉轴0 研磨片更換完成後，释放按麼按紐之作用力，壓缩彈簧 (1〇2)將使按鈕構件回復至解除位置，而扭力彈簧(1〇4)則使筒 禮(91)由作動位置復歸於安全位置，回復第^^一圖之狀態。 由第十一圖所示可知，常態時，筒體(91)内端受導銷(84) 所擋止，故，若使用者不旋轉筒體至作動位置時，直接按壓按 钮構件並無法使按紐構件移動，可防止誤觸按鈕裝置。 第十六、十七圖係按钮裝置(11〇)之又一較佳實施例。 該鈕座(120)之内端周面係設有一適當寬度之開口(122)， 與通道(124)連通。紐座外端周面則設有一導槽(126)貫通至鈕 座内部，且導槽外端係穿通至紐座外端。 10 1288684 該按紐構件係一紐桿(130)，其桿身（131)具有一大徑段 (132)及一小徑段(133)，該大徑段(132)係臨接於鈕桿之頭部 (134) 。一導銷(135)，插設於桿身(131)上。一限位部(136)，係 由一銷插設於桿身而形成。該鈕桿(130)係穿設於鈕座(120)之 通道(124)中，可沿紐座之轴向位移，亦可於紐座中轉動❶該 限位部(136)係位於紐座之開口 (122)中，以限制鈕桿之轉動角 度，且限位部抵於開口時，可作為紐桿位移至解除位置之定位 點。 該彈性機構係一彈簧(140)，兼具壓縮及扭轉之雙重作 用。該彈簧(140)係套設於該鈕桿之桿身(131)，並位於紐座之 容室(128)中，如第十八圓，其一端(142)係定位於奴座之一插 槽(127)，而與紐座(120)連接，而另一端(144)則定位於紐桿(130) 之一插槽(139)，而與鈕桿連接。彈簧(140)之二端面分別抵於 紐座内一肩面(129)及紐桿之大徑段(132)，同時，其扭轉力係 使钮桿於纽座中角位移至一安全位置，該定位部(136)係定位 於紐座之開口（122)—侧。 按紐裝置(110)於常態下係位於第十六圓之解除位置，導銷 (135) 係位於鈕座(120)外端，且與導槽(126)係具有一位差。使 用時’首先將钮桿(130)由第十六圖之安全位置轉動至第十九 囷之作動位置，此時，限位部(136)係定位於開口(122)之另一 側’導销(135)並正對於導槽(126)。之後，按壓紐桿(13〇)，可 使紐桿軸向位移至第二十圖之卡掣位置，按紐裝置即產生卡止 研磨機之轉轴之作甩。 於釋放作用力後，彈簧(140)首先係推動奴桿(13〇)沿著鈕 座(120)之轴向滑移，回復第十九圖之解除位置，此時，導鎮(135) 係元全耽離導槽(126) ’接著’彈簧之扭轉力即轉動鈕桿，使 鈕桿之角位置由第十九圖之作動位置回復於第十六圖之安全 11 1288684 位置。藉此，按鈕裝置即不再卡止轉轴。 第二十一及二十二圖顯示按钮裝置(150)之另一較佳實施 例’其中，鈕桿(160)於桿身(162)之大徑部(163)之周面設一導 槽(165) ’具有一直槽段(166)及一橫槽段(167) ·該紐桿係穿設 於鈕座(170) 〇 —導銷(175)，係插設於鈕座(170),並伸入於鈕 座而連接於導槽(165)。一彈簧(180)，具壓縮及扭轉之作用， 係裝設於紐座之容室(176)中，其二端面分別抵於紐座内部之 肩面及钮桿之肩面(168)，用以推頂紐桿。同時，其一埃(182) 係插接於钮桿之插孔(169)，而另一端(184)則固定於紐座内 部，用以轉動鈕桿安全位置。 本實施例之操作方式與第十一圖之實施例同 綜上所述，本發明係於研磨機上設一特殊設計之按紐裝 置，操作上，該按鈕裝置須先角位移，始能轴向位移，故可避 免誤觸開關而造成研磨機損壞之情形。 12 1288684 【圏式簡單說明】 第一圏係本發明一較佳實施例之立艘圖。 第一圏係第一圓之2_2剖線之剖面圓。 第三圏係本發明之按紐裝置之一較佳實施例之立體圓。 第四囷係第三圖之分解立體圖。 第五囷係第三圖之縱向剖面圓。 第六囷係第三囷之正視圓❶ 第七、八圖顯示第三圓之按鈕裝置之操作狀態。 第九圓概同於第二圖，顯示研磨機之轉轴被卡止之狀態。 第十囷係本發明之按鈕裝置之另一較佳實施例之正視圖。 第十一圓係本發明之按紐裝置之再一較佳實施例之立艘 局部剖視圖。 第十二圖係第Η•—圓之分解立體圖。 第十三圖係第十一圖之縱向剖面圖。 .：.* 第十四、十五圓係第十一囷之操作狀態。 第十六囷係按纽裝置之再一較佳實施例之立體圓。 第十七圖係第十六囷之分解立艘圓。 第十八圖係第十六圖之縱向剖面圖。 第十九、二十圖係本實施例之操作狀態。 第二十一圖係按紐裝置之再一較佳實施例之立艘圏。 第二十二圖係第二十一圖之分解立體圖。 13 I主要元件符號說明】 研磨機(10) 機體(12) 1288684 轉轴(14) 研磨片（18) 按鈕裝置(20)(70)(90)(110)(150)鈕座(30)(80)(120)(170) 通道(32)(82)(124) 導槽(34)(93)(126)(165) 弧形段(36) 限止部(40) 容室(42)(86)(128)(176) 桿身(52) (99)(131)(162) 導銷(55)(84)(135)(175) 肩面(44)(56)(89)(168) 筒體(91) 通孔(92) 橫槽段(932)(167) 壓縮彈簧(102) 開口 (122) 直線段(28) 凹入(41) 按鈕構件(50乂90) 頭部(54)(94)(97) 彈性機構(60)(100)(140)(180) 嵌槽(88) 鈕桿(96)(130)(160) 直槽段(931)(166) 限位部(98)(136) 扭力彈簧(104) 大、小徑段(132)(133)(163) 141288684 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a polishing apparatus, which in particular refers to a grinding machine, which has a button, which can limit the rotation axis of the grinding machine by pressing the button Rotating 9 and the invention can prevent the user from accidentally touching the button, so as to avoid damage to the grinder. [Prior Art] Press, the conventional grinder, whether pneumatic or electric, is installed at the bottom end The abrasive sheet grinds the object. Various abrasive sheets have different grinding effects, and it is often necessary to change different abrasive sheets when grinding different objects or grinding sheets. In the traditional grinding machine, the method of replacing the grinding piece requires two wrenches, one wrench is used to cover the rotating shaft, so that the rotating shaft cannot be rotated, and the other wrench is used to rotate the nut at the bottom end of the rotating shaft, loosening After the nut is removed, the original abrasive piece is removed, and the new abrasive piece is placed on the rotating shaft, and then the nut is tightened to fix the abrasive piece. Since the operation of the two wrenches is quite inconvenient, in order to improve this lack, the industry has developed a button for the grinding machine to press a button, and when the button is pressed, the button can be moved into the grinding machine to clamp the grinding. The axis of the machine makes it impossible to rotate. Therefore, when disassembling the abrasive sheet, the abrasive sheet can be replaced by simply turning the nut at the bottom end of the shaft with a wrench. If the design only needs to operate a wrench, it is convenient to operate. However, since the above-mentioned structure only needs to directly press the button to lock the shaft, it is easy to be accidentally touched by the actual use. When the grinding machine is in operation, the user accidentally touches the shaft. When the button is turned, the rotating shaft will be stuck with the sister, causing damage to the grinder. SUMMARY OF THE INVENTION The present invention is directed to a grinder for providing a lockable shaft, which is provided with a button device, and when the button is pressed, a function of locking the shaft of the grinder 1288684 can be generated. Can't turn. The main object of the present invention is to prevent the possibility of accidental contact with the button causing damage to the grinder. [Embodiment] In order to enable the reviewing committee to further understand the objects, features and effects of the present invention, a number of preferred embodiments of the present invention will be described hereinafter. The first figure is a perspective view of a preferred embodiment of the invention. The second figure is a section 囷 of the line 2-2 of the first figure. The third figure is a stand-up circle of a preferred embodiment of the button device of the present invention. The fourth circle is the decomposition of the third figure. The fifth figure is the longitudinal section 第三 of the third figure. The sixth picture is the front view circle of the third figure. The seventh and eighth figures show the operational state of the button device of the third figure. The ninth diagram is similar to the second diagram, showing the state in which the rotating shaft of the grinder is locked. The tenth figure is a front view of another preferred embodiment of the button device of the present invention. The eleventh circle is a partial cross-sectional circle of a further preferred embodiment of the button device of the present invention. An exploded perspective view of the twelfth circle of the first circle. The thirteenth picture is a longitudinal section of the Η•- circle. The fourteenth and fifteenth drawings are the operational states of the eleventh figure. Fig. 16 is a perspective view of still another preferred embodiment of the button device. Figure 17 is an exploded perspective view of the sixteenth diagram. Figure 18 is a longitudinal sectional view of the sixteenth figure. The nineteenth and twentyth drawings are the operational states of the present embodiment. The twenty-first figure is a perspective view of a further preferred embodiment of the button device. 6 1288684 The twenty-second diagram is an exploded perspective view of the twenty-first figure. Referring to Figures 1 and 2, a grinder (10) according to a preferred embodiment of the present invention may be a pneumatic or electric grinder. The engine boat (12) is provided with a movable shaft, which can be rotated by a driving mechanism (a pneumatic grinding machine is a rotor and an electric grinding machine is a motor) to drive a rotating shaft (14). In this embodiment, the linkage shaft and the rotating shaft (14) are driven by a bevel gear (16). The bottom end of the rotating shaft (14) is sleeved with an abrasive piece (18), which is pressed by a nut (19) to be pressed by a button device (2〇), and is mounted on the body (I2) for generating The function of the locking shaft (14). The button device (2〇) disclosed in this embodiment, please refer to the third to fifth, including: a button (30), which is cylindrical and has an axial passage (32) extending through the inner and outer ends thereof. . a guiding groove (34) is disposed on the circumferential surface of the button seat (30), and both ends of the guiding groove (34) have a difference in the axial direction and the radial direction of the button seat, and the segment is formed by a lone segment (36). And a straight line segment (38), as in the sixth figure, the straight line segment (38) is located behind the guide groove and parallel to the axial direction of the button seat, and the guide groove (34) is located near the button seat (30) A limiting portion (4〇) is protruded from the side wall surface of the end, and the limiting portion is adjacent to the front end of the guiding groove, and a recess (41) is formed between the limiting portion (40) and the front end of the guiding groove. A button member (50), this embodiment is a button, having a shaft (52) and a head (54) disposed at the outer end of the shaft. a guide pin (55) is inserted into the shaft (52). The button (50) is inserted into the passage (32) of the button seat (30) and is displaceable in the button seat. They are respectively exposed at the two ends of the button seat. The guide pin (55) is housed in the guide groove (34). A resilient mechanism is a compression spring (60). The channel (32) of the button seat (3) has a larger diameter chamber (42). The spring (60) is received in the chamber (42) and sleeved on the shaft (52) of the button (50). The two ends of the spring (60) respectively abut one of the shoulder surface (44) in the button seat and one shoulder surface (56) of the shaft shaft (52), as shown in the fifth figure. The rod (50) is urged by the spring (60) to be displaced toward the front end of the seat (3〇). 7 1288684 The button device (20) is fixed to the body (12) of the grinder with its button seat (30). The inner end of the button (50) is located inside the body, and the outer end is located outside the machine body. Please refer to the third and sixth figures. In the normal state, the button (50) is held by the spring (6〇) and is in a release position. At this time, the guide pin (55) of the button is positioned in the guide groove. (34) When the front end is in the released position, as shown in the second figure, the tie rod (5〇) does not act as a fixed shaft (14). To lock the shaft, the rod (50) must be moved into the grinder. Referring to the sixth aspect, the present invention does not allow the user to directly press the button. If the user directly presses the lever (50), the guide pin (55) will be moved to the recess (41). The six imaginary lines are shown and blocked by the limiting portion (40). In operation, the spindle (50) must first be rotated to angular displacement. As shown in the seventh figure, the user can press the slave pin (55) after the guide pin (55) passes over the limit (4〇). The button (50), the button stem is guided by the guide groove (34) and is displaced along the channel (32) toward the inner end of the button seat (30), when the guide pin (55) of the button reaches the guide groove (34) The straight line segment (38) of the back end is located at the position of one··^掣, as shown in the eighth figure. In the ninth round of the gull, the button (50) is moved into the ship (12), and the inner end is inserted into one of the sockets (16). Thereby, the rotating shaft (14) cannot be rotated. The user can replace the abrasive pad (18) with a wrench to turn the bottom end nut (19). After the replacement is completed, 'release the pressing force of the button (50), the spring (6〇) pushes the rod to return to the state of the third and sixth figures, and the position of the card is restored to the position of the ^, and the shaft is no longer locked. (14). When the lever is returned, the guide pin (55) moves along the guide groove (34). It can be seen from the above description that when the button device is to be rotated, the button must be deliberately rotated first, and the button button can be pressed to directly press the button and the shaft is rotated. Therefore, the present invention has an insurance function, and when the operator is inadvertently or improperly touched by the operator during the process, the shaft is also rotated, so that the mechanical damage can be prevented. 8 1288684 Tenth, another preferred embodiment of the button device (20,) of the present invention, the structure of which is substantially identical to the third circle, except that the guide of the new seat (30,); 34,) is completely curved (36,), and there is no straight line at the end of the guide. When using, turn the button (5〇,) so that the guide pin (55,) passes over the limit (4〇,), and the button can be displaced along the axial direction of the button holder regardless of whether the user turns or presses the button. , and arrive at the location of the card. A further preferred embodiment of the button device (70) of the present invention has a slave seat, a button member and an elastic mechanism b. The button holder (80) has a passage through the inner and outer ends. (82). A guide pin (84) is inserted into the button holder, and the inner end thereof extends into the holder. The button member (9〇) includes a barrel (91) and a button (96) having an axial through hole (92). a guide groove (93) is disposed on the circumferential surface of the canister (91), has a continuous groove section (931) and a transverse groove section (932) connected to the rear end of the straight groove section, and the button stem (96) is worn Extending into the through hole (92) of the cylinder (91), the two ends of the thick rod (96) protrude from the barrel (91), and the head (97) of the button rod can accommodate the head of the barrel (94) In the alcove (941), as shown in the thirteenth. The button member (9〇) is inserted into the button holder from the outer end of the button (8〇) and can be displaced in the button holder. The outer end of the barrel (94) exposes the outer end of the button holder and the shaft of the rod is threaded through the passage, and the inner end of the barrel protrudes from the inner end of the button holder. The guide groove (93) is connected to the guide pin (84), such as the eleventh circle. A limiting portion (98) is a pin that is inserted into the shaft (99) of the button and is embedded in the slot (88) at the inner end of the button seat, so that the button can only be used on the shaft of the button seat. The cylinder is displaced and cannot be rotated. The cylinder can be rotated on the knob. The elastic mechanism (100) includes a compression spring (102) and a torsion spring (104). The compression spring (1〇2) is installed in the chamber ¢6) of the new seat, and the two ends thereof respectively abut against one of the shoulder surface (89) of the new seat and the rear end of the cylinder body (91), and the elasticity thereof It can keep the button member displaced to the outer end of the button. The torsion spring (1〇4) is sleeved on the shaft (99) of the button stem (96), and is located between the cylinder body (91) and the button stem, and one end (1〇5) is 9 1288684 inserted into the barrel The body of the jack (911), and the other end (i〇6) is positioned at the convex portion (961) of the rear end face of the button, the torsion spring is to maintain the cylinder in a normal angular position under normal conditions . ' ' The button unit (90) is mounted in the body of the grinder for the cassette shaft. The state of its installation can be referred to the first and second rounds. In the normal state, the button member (90) is pushed by the compression spring (1〇2) and is in the release position. In this state, the button member touches the groove of the seat by the limiting portion (98). (88) Positioning at the end. At the same time, the cylinder (91) is twisted by the torsion spring (104) and positioned at a specific angular position, that is, a safe position, and the cylinder is free end of the transverse groove section (932) of the guide groove (93). Positioning against the guide pin (84) When the button device is to be operated, the button member must be rotated before the button member can be pressed. First, the user rotates the cartridge (91) to the actuating position of the fourteenth crucible, and in the actuating position, the guide pin moves to the other end of the transverse trough section (932), which is also a straight trough section (931). End. That is, in the actuating position, the straight groove section (931) on the cylinder is directed to the guide pin (84), and then the user can press the button member (90) to move into the inner end of the button seat (80), and then move. To the position of the cassette shown in the fifteenth figure, insert the inner end of the button (96) into the bevel gear, and after the fixed shaft 0 is replaced, release the force of the button and compress the spring (1〇). 2) The button member will be returned to the release position, and the torsion spring (1〇4) will return the cylinder (91) to the safe position from the active position, and return to the state of the first figure. As can be seen from the eleventh figure, in the normal state, the inner end of the cylinder (91) is blocked by the guide pin (84). Therefore, if the user does not rotate the cylinder to the actuating position, directly pressing the button member does not make it possible. The button member moves to prevent accidental touch of the button device. A sixteenth and seventeenth embodiment is another preferred embodiment of the button device (11〇). The inner peripheral surface of the button seat (120) is provided with an opening (122) of a suitable width to communicate with the passage (124). The outer surface of the outer end of the button is provided with a guiding groove (126) extending through the inside of the button seat, and the outer end of the guiding groove is passed through to the outer end of the button. 10 1288684 The button member is a button (130), the shaft (131) has a large diameter section (132) and a small diameter section (133), and the large diameter section (132) is adjacent to the button stem Head (134). A guide pin (135) is inserted into the shaft (131). A limiting portion (136) is formed by inserting a pin into the shaft. The button rod (130) is disposed in the passage (124) of the button seat (120), can be displaced along the axial direction of the button seat, and can also be rotated in the button seat. The limit portion (136) is located at the button seat. In the opening (122), the rotation angle of the knob is restricted, and when the limiting portion abuts the opening, the button can be displaced to the positioning point of the release position. The elastic mechanism is a spring (140) which has both the function of compression and torsion. The spring (140) is sleeved on the shaft (131) of the button and is located in the chamber (128) of the button seat, such as the eighteenth circle, and one end (142) is positioned at one of the slaves. The slot (127) is coupled to the button (120) and the other end (144) is positioned in one of the slots (139) of the button (130) and is coupled to the button stem. The two end faces of the spring (140) respectively abut against a shoulder surface (129) and a large diameter section (132) of the new rod, and the torsional force thereof causes the knob to be displaced to a safe position in the middle angle of the button. The positioning portion (136) is positioned on the opening (122) side of the button. The button device (110) is in the release position of the sixteenth circle in the normal state, and the guide pin (135) is located at the outer end of the button seat (120) and has a difference from the guide groove (126). When in use, the knob (130) is first rotated from the safe position of the sixteenth figure to the actuating position of the nineteenth turn. At this time, the limit portion (136) is positioned on the other side of the opening (122). The pin (135) is facing the guide groove (126). After that, press the button (13〇) to axially displace the rod to the position of the cassette in the twentieth diagram. The button device will produce the rotation of the shaft of the grinder. After releasing the force, the spring (140) first pushes the slave bar (13〇) to slide along the axial direction of the button seat (120), and returns to the release position of the nineteenth figure. At this time, the guide town (135) is Yuan Quanqi is away from the guide groove (126) 'Next' the spring's torsional force is to turn the knob, so that the angular position of the button is restored from the position of the nineteenth figure to the position of safety 11 1288684 of the sixteenth figure. Thereby, the button device no longer locks the shaft. 21 and 22 show another preferred embodiment of the button device (150) wherein the button lever (160) is provided with a guide groove on the circumferential surface of the large diameter portion (163) of the shaft (162). (165) 'With a straight slot section (166) and a transverse slot section (167) · The stem is threaded through the button seat (170) 〇-guide pin (175), which is inserted into the button seat (170). And extending into the button seat and connected to the guide groove (165). A spring (180), which has the function of compression and torsion, is installed in the chamber (176) of the button, and the two end faces respectively abut the shoulder surface of the button seat and the shoulder surface (168) of the button. To push the top bar. At the same time, one angstrom (182) is inserted into the jack (169) of the button, and the other end (184) is fixed inside the button to rotate the button lever safely. The operation mode of the embodiment is the same as that of the embodiment of the eleventh embodiment. The invention is provided with a specially designed button device on the grinding machine. In operation, the button device must be angularly displaced first. The displacement is so that the damage to the grinder can be avoided by accidentally touching the switch. 12 1288684 [Simplified description of the first embodiment] The first embodiment is a stand chart of a preferred embodiment of the present invention. The cross section of the 2nd line of the first circle of the first line is round. The third aspect is a solid circle of a preferred embodiment of the button device of the present invention. The fourth perspective is an exploded perspective view of the third figure. The fifth section is a longitudinal section circle of the third figure. The sixth line is the third round of the front view circle. The seventh and eighth figures show the operation state of the third round button device. The ninth circle is the same as the second figure, showing the state in which the rotating shaft of the grinder is locked. The tenth aspect is a front view of another preferred embodiment of the button device of the present invention. The eleventh circle is a partial cross-sectional view of a stand of a further preferred embodiment of the button device of the present invention. The twelfth figure is an exploded perspective view of the Η•-circle. The thirteenth drawing is a longitudinal sectional view of the eleventh drawing. .:.* The operating conditions of the eleventh and fifteenth rounds of the eleventh. A three-dimensional circle of a further preferred embodiment of the sixteenth button device. The seventeenth figure is the decomposition of the 16th 立. Figure 18 is a longitudinal sectional view of the sixteenth figure. The nineteenth and twentyth drawings are the operational states of the present embodiment. The twenty-first figure is a stand-up of a further preferred embodiment of the button device. The twenty-second figure is an exploded perspective view of the twenty-first figure. 13 I Main component symbol description] Grinding machine (10) Body (12) 1288684 Rotary shaft (14) Grinding piece (18) Button device (20) (70) (90) (110) (150) Button seat (30) ( 80) (120) (170) Channel (32) (82) (124) Guide groove (34) (93) (126) (165) Curved section (36) Limiting section (40) Housing (42) (86 )(128)(176) Shaft (52) (99)(131)(162) Guide pin (55)(84)(135)(175) Shoulder (44)(56)(89)(168) Body (91) Through Hole (92) Transverse Slot (932) (167) Compression Spring (102) Opening (122) Straight Section (28) Recess (41) Button Member (50乂90) Head (54) ( 94) (97) Elastic mechanism (60) (100) (140) (180) Insert groove (88) Button stem (96) (130) (160) Straight groove section (931) (166) Limiting section (98) (136) Torque spring (104) Large and small diameter segments (132) (133) (163) 14