1289053 九、發明說明： 【發明所屬之技術領域】 一種牙科高速手機按壓式挾持機構，尤指一種可提高 筒夾及推鈕定位效果之牙科高速手機按壓式挾持機構。 【先前技術】 一般而言，牙醫師常對病患診療的項目包括了蛀牙的 修補、磨牙等，而在眾多對病患使用的診療器具中，手機 可裝設許多診療的工具頭如鑽針、磨牙頭，故其使用頻率 ► 最高。由大部份的診療工具頭都必需於牙醫師診療時，在 病患口腔内進行工作，因而前述的工具頭就必需被精確且 穩固地被定位並傳動旋轉；反之，倘若發生工具頭於牙醫 ‘ 師操作時鬆脫的話，都將造成病患重大的危險。 - 習有的工具頭定位方式為中空轉軸内裝設有筒夾，而 筒夾外表面鄰近其中一端較另端為厚，筒夾内夾設前述之 工具頭，以藉由轉軸壓制筒夾，而將工具頭固定；中空轉 軸並穿設有推鈕，而推鈕以及筒夾之間分別具有連動部， > 其可連動筒夾隨轉軸旋轉；牙醫師並可藉由擠壓推鈕，而 使得筒夾較厚的部份退離中空轉轴而達到卸開工具頭的目 的。 而前述的技術由於筒夾以及推鈕僅藉由連動部將二者 連動，因此其挾持力不足，是故有可能會發生筒夾退出的 可能，因而工具頭亦不易穩固地固定，而工具頭不被穩固 地固定情況下，會造成工具頭以及筒夾之間因操作時振動 的磨耗；倘若為了使工具頭以及筒夾之間的結合力更佳， 5 1289053 則勢必要提南筒爽以及工具頭之尺寸的精密度以及材質的 要求’是故成本亦相對提南。 【發明内容】 本發明之主要目的在於提供一種牙科高速手機按壓式 挟持機構’使得筒爽及推纽定位效果提南’而延長其使用 壽命。 為達前述之目的，本發明包括： 一中空轉轴，其具有軸向貫穿之容置孔，該轉軸並以 > 其軸向的兩端分別界定相對遠離之一第一端部以及一第二 端部，該第一端部並具有一内縮之靠抵部，該靠抵部並圍 繞形成一六角孔； ~ 一推鈕，其具有一第一結合部以及與該第一結合部一 ~ 體相連之固定部，該第一結合部並圍繞形成一第一結合孔； 該第一結合部遠離該固定部方向具有二相向設置之凹 槽，該第一結合部相鄰於二凹槽具有二第一凸柱，二第一 凸柱彼此設置在相異侧，該推鈕於鄰接該固定部位置具有 > 較該固定部表面凸出之擋部；該推鈕並容置於該中空轉軸 之容置孔，且該擂部係抵靠於該第一端部之靠抵部； 該固定部配合該靠抵部所形成之六角孔而具有與其相 對應之外六角形切面，該固定部並穿伸過該六角孔而外 露，使得該推鈕以及該中空轉轴二者之間不產生相對枢轉； 一筒夾；其容置於該中空轉轴之容置孔，該筒夾具有 一第二結合部，該第二結合部圍繞形成一第二結合孔，該 第二結合部並具有與該第一結合部呈互補型態配置的凹槽 1289053 以及凸柱，且该筒夾具有鄰接該第二結合部之摩擦部，爷 摩擦部之厚度較該第二結合部之表面高，該筒失遠離該第 二結合部具有與該摩擦部連接之—阻擔部，該阻擔部之厚 度係大於該中空轉軸之容置孔的内徑，且該阻擔部靠抵ς 该中空轉軸之第二端部。 本發明之上述及其他目的與優點，不難從下述所選用 實施例之詳細說明與附圖中，獲得深入了解。 、 當然，本發明在某些另件上，或另件之安排上容許有 所不同，但所選用之實施例，則於本說明書中，予以詳細 說明，並於附圖中展示其構造。 口 【實施方式】 請參閱第1圖至第3圖，圖中所示者為本發明所選用 之實施例結構，此僅供說明之用，在專利申請上並不受此 種結構之限制。 本貫施例之手機按壓式挾持機構包括：一中空轉軸 1、一推鈕2、一筒央3。 忒中空轉軸1，其具有軸向貫穿之容置孔丄〇，該轉 軸1並以其軸向的兩端分別界定相對遠離之一第一端部1 ^以及一第二端部丄2，該第一端部i丄並具有一内縮之 靠抵部1 1 1，該靠抵部1 i i並圍繞形成—六角孔丄1 2。 该推紐2具有一第一結合部2 1以及與該第一結合部 2 1—體相連之固定部2 2，該第一結合部2丄並圍繞形 成一第一結合孔2 1 1 ; 1289053 該第一結合部2 1遠離該固定部2 2方向具有二相向 設置之凹槽2 3，該第一結合部2 1相鄰於二凹槽2 3具 有二第一凸柱2 4，二第一凸柱2 4彼此設置在相異側， 該推鈕2於鄰接該固定部2 2位置具有較該固定部2 2表 面凸出之擋部2 5 ;該推鈕2並容置於該中空轉軸1之容 置孔1 0，且該擂部2 5係抵靠於該第一端部1 1之靠抵 部 1 1 1。 該固定部2 2配合該靠抵部1 1 1所形成之六角孔工 1 2而具有與其相對應之外六角形切面2 2 1，該固定部 2 2並穿伸過該六角孔1 1 2而外露，使得該推鈕2以及 该中空轉軸1二者之間不產生相對樞轉。 該筒夾3，其亦容置於該中空轉軸1之容置孔丄〇， 該筒夾3具有一第二結合部3丄，該第二結合部3工圍繞 形成-第二結合孔3 2，該第二結合部3工並具有與該第 、’口 〇 4 2 1壬互補型悲配置的凹槽3 3以及凸柱3 4， 具有鄰接該第二結合部31之摩擦部35，該 43 5之厚度較該第二結合部3丄之表面高，該筒夹 =:Γ:ΓΓ31具有與該摩擦部3 5連接之-阻 =的:阻播部3 6之厚度係大於該中空轉轴㈣ 二？阻播部36靠抵於物轉軸1之第 :於;W L其中該筒夾3之第二結合孔3 2 巧趴β阻輻部3 6及該摩擦部q R ^ 2之^面f有—環槽3 7(如第4二沿該第二結合孔3 '芬閲弟4圖至第5圖，以鑽針裝設為例，鑽針4由 1289053 筒夾3之第二結合孔3 2***延伸至推鈕2的第一結合孔 2 1 1，筒夾3之摩擦部3 5會受中空轉軸1之第二端部 1 2壓制而使得筒夾3與中空轉軸1之間緊密配合；而筒 夾3的第二結合部3 1則受到鑽針4緊迫的力量撐開，而 抵住中空轉轴1 ;同樣地，鑽針4亦會對推鈕2的第一結 合部2 1迫緊，而使得第一結合部2 1受撐開變形，進而 抵住中空轉轴4，因此鑽針4與中空轉轴2以及推鈕3之 間獲得良好的摩擦，而使得定位效果增加。此外推鈕2的 凸柱2 4係嵌入筒夾3的凹槽3 3，而筒夾3的凸柱3 4 嵌入推鈕2的凹槽2 3，使得筒夾3以及推鈕2兩者之間 疋位更加確實，於傳動時亦更加地穩固。 —立如當牙醫師欲將鑽針4退離時，僅需按壓推鈕2之固 夂部2 2 ’使得推鈕2之凸柱2 4擠壓筒夾3，而讓筒夾 3之摩擦部3 5離開中空轉軸1之容置孔工〇，即可 退離的動作，在操作上十分方便。 以上所述貫施例之揭示係用以說明本發明， 範r數值之變更或等效元件― 確可說明，可使熟知本項技藝者明瞭本發明的 申=達成“目的，實已符合專利法之規定，爰提出專利 【圖式簡單說明】 發明之立體外觀圖(轉軸以虛線表示) 圖係本發明之立體分解圖 12890531289053 IX. Description of the invention: [Technical field of invention] A dental high-speed mobile phone pressing type holding mechanism, especially a dental high-speed mobile phone pressing type holding mechanism capable of improving the positioning effect of the collet and the push button. [Prior Art] In general, dentists often treat patients with dental caries, including dental caries, molars, etc., and in many medical devices used for patients, mobile phones can be equipped with many tools such as drills. , grinding the head, so its use frequency ► highest. Most of the tools are required to work in the patient's mouth when the dentist is working, so the aforementioned tool head must be accurately and firmly positioned and driven to rotate; otherwise, if the tool head occurs at the dentist 'If the teacher is loose during operation, it will pose a serious risk to the patient. - The conventional tool head positioning method is such that the hollow shaft is provided with a collet, and the outer surface of the collet is adjacent to one end of which is thicker than the other end, and the aforementioned tool head is interposed in the collet to press the collet by the rotating shaft. The tool head is fixed; the hollow shaft is provided with a push button, and the push button and the collet respectively have a linkage portion, > the linkage collet rotates with the rotation shaft; the dentist can press the push button, The thicker portion of the collet is retracted from the hollow shaft to achieve the purpose of unloading the tool head. In the above-mentioned technique, since the collet and the push button are only linked by the interlocking portion, the holding force is insufficient, so that the collet may be withdrawn, and the tool head is not easily fixed stably, and the tool head is not fixed. If it is not firmly fixed, it will cause the vibration between the tool head and the collet due to vibration during operation; if the bonding force between the tool head and the collet is better, 5 1289053 is necessary to raise the The precision of the size of the tool head and the requirements of the material 'is therefore the cost is relatively high. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a dental high-speed mobile phone press type holding mechanism that extends the life of the tube and push button positioning effect. In order to achieve the foregoing objects, the present invention comprises: a hollow rotating shaft having an axially extending receiving hole, the rotating shaft and the first end of the axial direction respectively defining a first end and a first a second end portion, the first end portion has a retracting abutting portion, and the abutting portion surrounds and forms a hexagonal hole; a push button having a first joint portion and the first joint portion a first connecting portion and a first joint hole; the first joint portion has two oppositely disposed grooves away from the fixing portion, the first joint portion being adjacent to the second concave portion The slot has two first protrusions, and the two first protrusions are disposed on the opposite sides of each other, and the push button has a stop protruding from the surface of the fixed portion adjacent to the fixed portion; the push button is accommodated The hollow rotating shaft receives the hole, and the crotch portion abuts against the abutting portion of the first end portion; the fixing portion cooperates with the hexagonal hole formed by the abutting portion to have a hexagonal cross section corresponding thereto. The fixing portion is exposed through the hexagonal hole to expose the push button and the hollow No relative pivoting between the two shafts; a collet; the accommodating hole of the hollow rotating shaft, the cylinder clamp has a second joint, and the second joint surrounds forming a second joint a hole, the second joint portion has a groove 128053 and a protrusion arranged in a complementary configuration with the first joint portion, and the collet has a friction portion adjacent to the second joint portion, and the thickness of the flange portion is larger than the hole The surface of the second joint portion is high, and the second joint portion of the second joint portion has a resisting portion connected to the friction portion, and the thickness of the resisting portion is larger than the inner diameter of the receiving hole of the hollow rotating shaft, and The blocking portion abuts against the second end of the hollow rotating shaft. The above and other objects and advantages of the present invention will be readily understood from The invention may, of course, be varied on certain components or arrangements of the components, but the selected embodiments are described in detail in the specification and their construction is shown in the drawings. [Embodiment] Please refer to Fig. 1 to Fig. 3, which shows the structure of the embodiment selected for the present invention, which is for illustrative purposes only and is not limited by such structure in the patent application. The mobile phone pressing type holding mechanism of the present embodiment includes: a hollow rotating shaft 1, a push button 2, and a tube center 3. a hollow shaft 1 having an axially extending receiving bore, the rotating shaft 1 defining a first end portion 1 ^ and a second end portion 2 opposite to each other with its axial ends The first end portion i has a retracting abutting portion 1 1 1 , and the abutting portion 1 ii surrounds the hexagonal hole 丄1 2 . The push button 2 has a first joint portion 2 1 and a fixing portion 22 connected to the first joint portion 2 1 , and the first joint portion 2 is formed around a first joint hole 2 1 1 ; 1289053 The first joint portion 2 1 has two oppositely disposed grooves 2 3 away from the fixing portion 22, and the first joint portion 2 1 has two first protrusions 2 4 adjacent to the two grooves 2 3 , two a protrusions 2 4 are disposed on the opposite sides of the fixing portion 2, and the push button 2 has a blocking portion 25 protruding from the surface of the fixing portion 2 2 adjacent to the fixing portion 2 2; the push button 2 is accommodated in the hollow The shaft 1 accommodates the hole 10, and the jaw portion 25 abuts against the abutting portion 1 1 1 of the first end portion 11. The fixing portion 22 is matched with the hexagonal hole 1 2 formed by the abutting portion 1 1 1 and has a hexagonal cutting surface 2 2 1 corresponding thereto, and the fixing portion 2 2 extends through the hexagonal hole 1 1 2 The exposure is such that no relative pivoting occurs between the push button 2 and the hollow shaft 1. The collet 3 is also received in the receiving hole of the hollow rotating shaft 1. The collet 3 has a second joint portion 3, and the second joint portion 3 surrounds the second forming hole 3 2 . The second joint portion 3 has a groove 3 3 and a protrusion 3 4 which are complementary to the first and second ports, and has a friction portion 35 adjacent to the second joint portion 31. The thickness of 43 5 is higher than the surface of the second joint portion 3丄, and the collet=:Γ:ΓΓ31 has a resistance to the friction portion 35. The thickness of the blocking portion 36 is greater than the hollow rotation. Axis (four) two? The obstruction portion 36 abuts against the object shaft 1; WL; wherein the second coupling hole 3 2 of the collet 3 is 趴 β the obstruction portion 36 and the friction portion q R ^ 2 Ring groove 3 7 (such as the 4th along the second joint hole 3 'Fen's 4th to 5th figure, with the drill pin as an example, the drill 4 is made of 1289053 the second joint hole 3 of the collet 3 2 Inserting the first coupling hole 2 1 1 extending to the push button 2, the friction portion 35 of the collet 3 is pressed by the second end portion 12 of the hollow rotating shaft 1 to make a tight fit between the collet 3 and the hollow rotating shaft 1; The second joint portion 3 1 of the collet 3 is urged by the pressing force of the drill pin 4 to abut against the hollow shaft 1; likewise, the drill needle 4 is also forced by the first joint portion 2 of the push button 2. Tightly, the first joint portion 21 is deformed by the expansion, thereby abutting against the hollow shaft 4, so that good friction is obtained between the drill needle 4 and the hollow shaft 2 and the push button 3, so that the positioning effect is increased. The boss 2 4 of the push button 2 is inserted into the recess 3 3 of the collet 3, and the stud 3 4 of the collet 3 is embedded in the recess 2 3 of the push button 2, so that the collet 3 and the push button 2 are The position is more certain, and it is more stable during transmission. When the dentist wants to retreat the drill needle 4, it is only necessary to press the solid portion 2 2 ' of the push button 2 so that the projection 2 4 of the push button 2 presses the collet 3, and the friction portion 3 5 of the collet 3 leaves. The operation of the hollow shaft 1 for accommodating the hole, which can be retracted, is very convenient in operation. The above description of the embodiment is used to illustrate the invention, and the value of the variable r or the equivalent element can be It is to be understood that the person skilled in the art can understand that the invention has achieved the purpose of the invention, and has been in compliance with the provisions of the patent law, and has filed a patent [a brief description of the schema]. The stereoscopic appearance of the invention (the axis of rotation is indicated by a broken line) Invented, three-dimensional, exploded view 128053
$ 3圖係本發明之筒夾與推鈕立體外觀圖 第4圖係本發明之局部結構示意圖 第5圖係本發明之實施狀態示意圖（裝設鑽 【主要元件符號說明】 (本發明部分） 中空轉軸1 容置孔1 0 第一端部1 1 靠抵部111 六角孔112 第二端部12 推钮2 第一結合部2 1 第一結合孔2 1 1 固定部2 2 切面2 2 1 凹槽2 3 凸柱2 4 擋部2 5 筒夾3 第二結合部3 1 第二結合孔3 2 凹槽3 3 凸柱3 4： 摩擦部3 5 阻擋部3 6 環槽3 7 鑽針4Fig. 4 is a schematic view showing a partial structure of a collet and a push button of the present invention. Fig. 5 is a schematic view showing a state of implementation of the present invention (installation drill [main component symbol description] (part of the present invention) Hollow shaft 1 accommodating hole 1 0 first end portion 1 1 abutting portion 111 hexagonal hole 112 second end portion 12 push button 2 first joint portion 2 1 first joint hole 2 1 1 fixing portion 2 2 cut surface 2 2 1 Groove 2 3 Post 2 4 Stop 2 5 Collet 3 Second joint 3 1 Second joint hole 3 2 Groove 3 3 Post 3 4: Friction 3 5 Block 3 6 Ring groove 3 7 Drill 4