201039656 六、發明說明： _ 【發明所屬之技術領域】 本發明涉及一種耳機，尤其涉及一種有線耳機。 【先前技術】 目前，一般的立體耳機配備了 3.5mm身歷聲插頭，具 有較好的聲音效果，其被廣泛地應用於音頻設備。然而， ® 現有的行動電話一般採用的是2.5mm插頭的耳機。因此， 由於該兩種耳機規格不同，因而不能混用。使用者欲同時 在音頻設備及行動電話中使用耳機聆聽聲音時，需要攜帶 兩副不同的耳機，比較佔用空間，不便於使用者的使用。 【發明内容】 有鑒於此，有必要提供一種便於使用者使用的耳機。 〇 一種耳機包括聽筒、插頭元件以及電性連接該聽筒和 插頭元件的導線。該插頭元件包括主杆、設置於主杆一末 端且與該導線電性連接的第一插頭、套設於該第一插頭上 以形成第二插頭的套筒、以及螺合於該主杆上的操作件， 該操作件可在外力作用下驅動主杆移動使第一插頭伸出 或者縮入該套筒，以使插頭元件分別對應不同規格的音頻 介面。 一種具有兩種耳機規格的耳機包括聽筒、插頭元件以 3 201039656 及電性連接該聽筒和插頭元件的導線。該插頭元件包括頭 部、第一管體、第二管體及驅動裝置。第一管體的外徑為 • 第一耳機規格，第二管體的外徑為第二耳機規格。頭部與 - 第一管體相固定，第二管體套設於第一管體上且可在驅動 裝置的驅動下相對第一管體移動，以使第一管體伸出或者 縮入第二管體。 上述耳機可以變換成不同規格的耳機插頭，從而籍由 Ο 一個耳機即可與不同尺寸之音頻介面連接，不需要配備多 個耳機，使用方便且節省空間。 【實施方式】 請參看圖1，其為較佳實施方式耳機50使用狀態的立 體圖。耳機50包括聽筒10、插頭元件20、以及電性連接聽 筒10和插頭元件20的導線30。 Q 請結合參看圖2和圖3，插頭元件20包括圓柱體狀的主 杆21、設置於主杆21相對兩末端的第一插頭22和止擋件 23、套設於第一插頭22上的套筒25、螺合於主杆21上的操 作件24、套設於主杆21上且固定套筒25的固定體26、固定 連接於固定體26上用於收容止擋件23的收容體27。其中， 操作件24可在外力的作用下旋轉以驅動主杆21移動，從而 使第一插頭22與套筒25相對運動。 第一插頭22包括頭部221和第一管體223。頭部221的 4 201039656 一端為錐形，另一端與第一管體223相連。第一管體223的 外徑為2.5mm。從第一管體223靠近頭部221的一端順次設 . 置有第一左聲道觸片220、第一右聲道觸片222、以及第一 - 接地觸片224。 套筒25是中空的第二管體，其外徑為3.5mm，内徑大 於2.5mm。套筒25套設於第一插頭22的第一管體223上，且 其長度與第一管體223的長度一致。套筒25設有與第一左 Ο 聲道觸片220、第一右聲道觸片222、以及第一接地觸片224 相對應的第二左聲道觸片250、第二右聲道觸片252及第二 接地觸片254。第二左聲道觸片250、第二右聲道觸片252 及第二接地觸片254的内表面上分別設有若干凸起256。當 套筒25完全套設於第一管體223上時，凸起256分別抵壓於 第一左聲道觸片220、第一右聲道觸片222、以及第一接地 觸片224的外表面上，使第二左聲道觸片250、第二右聲道 〇 觸片252及第二接地觸片254與第一左聲道觸片220、第一 右聲道觸片222、以及第一接地觸片224穩定電性接觸。從 而第一插頭22與套筒25共同構成適合3.5mm耳機插孔的第 二插頭28。套筒25在其靠近第二接地觸片254的末端向外 伸出兩個勾狀凸耳258。 請結合參看圖4和圖5，主杆21上設有外螺紋210。操 作件24呈圓筒狀，其内圓周壁上設有與外螺紋210嚙合之 内螺紋240。外螺紋210的長度大於或者等於套筒25的長 5 201039656 度。操作件24的外圓周壁上等間隔設置若干凸條紋242， 以增加摩擦力，從而便於使用者施力於其上。 • 固定體26呈橢圓體，其上設有貫通的長方形的開槽 -260和圓形的開孔262。固定體26籍由開孔262使主杆21穿 設於其内，且開孔262與套筒25設有凸耳258的一端過盈連 接而將套筒25固定於其上。固定體26籍由開槽260將操作 件24收容於其内，並且操作件24相對的兩侧伸出開槽 〇 260，使操作件24限制在固定體26中而不能沿著主杆21的 軸向方向移動。固定體26上靠近套筒25的末端還設有與凸 耳258相對應的凹陷266，凸耳258可以籍由凹陷266勾設於 固定體26上。其中，固定體26可由兩個形狀相同且半橢圓 體狀的組合件264粘合而成，以便於組裝。 止擋件23呈長方體狀，其被固定體26擋設於固定體26 遠離套筒25的另一側。收容體27固定於固定體26靠近止擋 Ο 件23的一侧。收容體27内設有與止擋件23形狀相適配的長 方形收容槽270，使止擋件23可滑動地收容於其内。收容 槽270的長度大於套筒25的長度，且止擋件23在其内可移 動的最大距離為套筒25的長度。 當操作件24在外力作用下旋轉時，操作件24被限制在 固定體26中，而操作件24在其内螺紋240與主杆21的外螺 紋210的螺合作用下，可驅動主杆21旋轉並沿著主杆21的 軸向方向移動，且由於外螺紋210的長度大於或者等於套 201039656 筒25的長度，止擋件23在收容槽270内可移動的最大距離 為套筒25的長度，從而使主杆21可移動的距離等於套筒25 • 的長度，進而使第一插頭22伸出套筒25外，此時第一插頭 • 22可插設於2.5mm的耳機插孔中。另外，凸耳258和凹陷266 相互配合，可以避免套筒25相對固定體26滑動。 導線30可以順次穿設收容體27及主杆21，而分別與第 一插頭22的第一左聲道觸片220、第一右聲道觸片222、以 Ο 及第一接地觸片224電性連接。導線30位於收容體27的部 分設置為螺旋狀，從而當主杆21移動帶動第一插頭22伸出 套筒25 ’導線30也隨著拉伸，避免了導線3〇被扯斷。 下面以套筒25完全套設於第一管體223上作為初始狀 態’講述耳機5〇的應用。 當耳機50需要插入2.5mm的耳機插孔時，使用者旋轉 操作件24，使主杆21沿著其軸向方嚮往遠離收容體27的一 ❹側移動’直到止擋件23抵於固定體26上，主杆21停止移 動’此時’第一插頭22完全伸出套筒25之外，即可作為 2.5mm的耳機插頭使用。 當耳機50需要插入3.5mm的耳機插孔時，即，把耳機 作為3.5mm的耳機插頭使用時，使用者只要往相反方向旋 轉操作件24 ’使主杆21沿著其軸向方嚮往收容體27的一側 移動’直到止擋件23抵於收容體27内，主杆21停止移動， 此時’第—插頭22的管狀部完全縮入套筒25之内，亦即可 7 201039656 作為3.5mm的耳機插頭使用。 上述耳機可以變換成不同規格耳機插頭，從而籍由一 • 個耳機即可與不同尺寸之音頻介面連接，不需要配備多個 • 耳機，使用方便且節省空間。 本技術領域的普通技術人員應當認識到，以上的實施 方式僅是用來說明本發明，而並非用作為對本發明的限 定，只要在本發明的實質精神範圍之内，對以上實施例所 〇 作的適當改變和變化都落在本發明要求保護的範圍之内。 【圖式簡單說明】 圖1為較佳實施方式耳機使用狀態立體圖。 圖2為圖1所示的插頭元件的分解圖。 圖3為圖1所示的耳機局部剖面圖。 圖4為圖1所示的耳機的另一使用狀態立體圖。 Q 圖5為圖4所示的耳機局部剖面圖。 【主要元件符號說明】 耳機 50 插頭元件 20 主杆 21 止擋件 23 操作件 24 聽筒 10 導線 30 第一插頭 22 套筒 25 固定體 26 201039656 收容體 27 頭部 221 第一管體 223 第二管體 26 第一左聲道觸片 220 第一右聲道觸片 222 第一接地觸片 224 第二左聲道觸片 250 第二右聲道觸片 252 第二接地觸片 254 凸起 256 凸耳 258 外螺紋 210 止擋件 23 收容槽 270 開槽 260 開孔 262 組合件 264 凹陷 266 内螺紋 240 〇 9201039656 VI. Description of the Invention: _ Technical Field of the Invention The present invention relates to an earphone, and more particularly to a wired earphone. [Prior Art] At present, a general stereo earphone is equipped with a 3.5 mm body sound plug, which has a good sound effect, and is widely used in an audio device. However, ® existing mobile phones typically use a 2.5mm plug earphone. Therefore, since the two earphones have different specifications, they cannot be mixed. When users want to use headphones to listen to sounds in audio equipment and mobile phones at the same time, they need to carry two different pairs of headphones, which is more space-consuming and inconvenient for users. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide an earphone that is convenient for a user to use. 〇 An earphone includes an earpiece, a plug component, and a wire electrically connected to the earpiece and the plug component. The plug component includes a main pole, a first plug disposed at one end of the main pole and electrically connected to the wire, a sleeve sleeved on the first plug to form a second plug, and screwed on the main pole The operating member can drive the main rod to move under the external force to extend or retract the first plug, so that the plug components respectively correspond to different specifications of the audio interface. A headset having two earphone specifications includes an earpiece, a plug component, 3 201039656, and a wire electrically connecting the earpiece and the plug component. The plug member includes a head portion, a first tube body, a second tube body, and a driving device. The outer diameter of the first tube is • the first earphone size, and the outer diameter of the second tube is the second earphone size. The head is fixed to the first tube body, and the second tube body is sleeved on the first tube body and is movable relative to the first tube body under the driving of the driving device, so that the first tube body extends or retracts Two tubes. The above-mentioned earphones can be converted into different types of earphone plugs, so that one earphone can be connected to different sizes of audio interfaces without the need for multiple earphones, which is convenient and space-saving. [Embodiment] Please refer to Fig. 1, which is a perspective view showing a state of use of the earphone 50 of the preferred embodiment. The earphone 50 includes an earpiece 10, a plug member 20, and a wire 30 electrically connecting the earpiece 10 and the plug member 20. Referring to FIG. 2 and FIG. 3 together, the plug component 20 includes a main pole 21 having a cylindrical shape, a first plug 22 and a stopper 23 disposed at opposite ends of the main pole 21, and being sleeved on the first plug 22. a sleeve 25 , an operating member 24 screwed to the main rod 21 , a fixing body 26 sleeved on the main rod 21 and fixing the sleeve 25 , and a receiving body fixedly connected to the fixing body 26 for accommodating the stopper 23 27. Wherein, the operating member 24 is rotatable under the action of an external force to drive the main rod 21 to move, thereby causing the first plug 22 to move relative to the sleeve 25. The first plug 22 includes a head 221 and a first tube 223. 4 201039656 of the head 221 has a tapered end and the other end is connected to the first tubular body 223. The outer diameter of the first pipe body 223 is 2.5 mm. The first left channel contact 220, the first right channel contact 222, and the first-ground contact 224 are disposed in sequence from the end of the first tube 223 near the head 221 . The sleeve 25 is a hollow second tube having an outer diameter of 3.5 mm and an inner diameter of more than 2.5 mm. The sleeve 25 is sleeved on the first tube body 223 of the first plug 22 and has a length that coincides with the length of the first tube body 223. The sleeve 25 is provided with a second left channel contact 250 and a second right channel contact corresponding to the first left channel contact 220, the first right channel contact 222, and the first ground contact 224. Sheet 252 and second ground contact 254. A plurality of protrusions 256 are respectively disposed on inner surfaces of the second left channel contact 250, the second right channel contact 252, and the second ground contact 254. When the sleeve 25 is completely sleeved on the first tube body 223, the protrusions 256 are respectively pressed against the first left channel contact piece 220, the first right channel contact piece 222, and the first ground contact piece 224. On the surface, the second left channel contact 250, the second right channel contact 252 and the second ground contact 254 are coupled to the first left channel contact 220, the first right channel contact 222, and the first A ground contact 224 stabilizes electrical contact. Thus, the first plug 22 and the sleeve 25 together form a second plug 28 suitable for a 3.5 mm headphone jack. The sleeve 25 projects two hook-shaped lugs 258 outwardly at its end adjacent the second ground contact 254. Referring to Figures 4 and 5, the main rod 21 is provided with external threads 210. The operating member 24 has a cylindrical shape, and its inner circumferential wall is provided with an internal thread 240 that engages with the external thread 210. The length of the external thread 210 is greater than or equal to the length of the sleeve 25 of 201039656 degrees. A plurality of convex stripes 242 are equally spaced on the outer circumferential wall of the operating member 24 to increase the frictional force, thereby facilitating the user to apply force thereto. • The fixed body 26 is an ellipsoid with a through-open rectangular slot 260 and a circular opening 262. The fixed body 26 is provided with the main rod 21 through the opening 262, and the opening 262 is connected to the end of the sleeve 25 provided with the lug 258 to fix the sleeve 25 thereto. The fixing body 26 receives the operating member 24 therein by the slot 260, and the opposite sides of the operating member 24 protrude from the slot 260, so that the operating member 24 is restrained in the fixed body 26 and cannot be along the main rod 21. Move in the axial direction. The end of the fixing body 26 adjacent to the sleeve 25 is further provided with a recess 266 corresponding to the lug 258, and the lug 258 can be hooked on the fixing body 26 by the recess 266. Wherein, the fixing body 26 can be bonded by two identically shaped and semi-elliptical assemblies 264 for assembly. The stopper 23 has a rectangular parallelepiped shape and is supported by the fixed body 26 on the other side of the fixed body 26 away from the sleeve 25. The housing 27 is fixed to the side of the fixed body 26 which is adjacent to the stopper member 23. The housing body 27 is provided with a rectangular receiving groove 270 adapted to the shape of the stopper 23, so that the stopper 23 is slidably received therein. The length of the receiving groove 270 is greater than the length of the sleeve 25, and the maximum distance the stopper 23 can move therein is the length of the sleeve 25. When the operating member 24 is rotated by an external force, the operating member 24 is restrained in the fixed body 26, and the operating member 24 can drive the main rod 21 under the screwing of the internal thread 240 thereof and the external thread 210 of the main rod 21. Rotating and moving along the axial direction of the main rod 21, and since the length of the external thread 210 is greater than or equal to the length of the sleeve 201039656, the maximum distance that the stopper 23 can move in the receiving groove 270 is the length of the sleeve 25. Thus, the main rod 21 can be moved a distance equal to the length of the sleeve 25, so that the first plug 22 extends out of the sleeve 25, and the first plug 22 can be inserted into the 2.5 mm headphone jack. In addition, the lugs 258 and the recesses 266 cooperate to prevent the sleeve 25 from sliding relative to the fixed body 26. The wire 30 can be sequentially inserted into the receiving body 27 and the main rod 21, and respectively electrically connected to the first left channel contact 220 of the first plug 22, the first right channel contact 222, and the first ground contact piece 224. Sexual connection. The portion of the wire 30 at the receiving body 27 is provided in a spiral shape so that when the main rod 21 moves to move the first plug 22 out of the sleeve 25, the wire 30 is also stretched, thereby preventing the wire 3 from being torn. In the following, the sleeve 25 is completely sleeved on the first pipe body 223 as an initial state, and the application of the earphone 5 is described. When the earphone 50 needs to be inserted into the 2.5 mm earphone jack, the user rotates the operating member 24 to move the main lever 21 along its axial direction away from a side of the receiving body 27 until the stopper 23 abuts against the fixed body. On the 26th, the main lever 21 stops moving. At this time, the first plug 22 is completely extended beyond the sleeve 25, and can be used as a 2.5 mm earphone plug. When the earphone 50 needs to be inserted into the 3.5mm earphone jack, that is, when the earphone is used as a 3.5mm earphone plug, the user only needs to rotate the operating member 24' in the opposite direction to move the main rod 21 along the axial direction thereof toward the receiving body. The one side of the 27 moves ' until the stopper 23 abuts against the receiving body 27, and the main rod 21 stops moving. At this time, the tubular portion of the first plug 22 is completely retracted into the sleeve 25, which can be 7 201039656 as 3.5. Mm headphone plug is used. The above-mentioned earphones can be converted into different types of earphone plugs, so that one earphone can be connected to different sizes of audio interfaces, and it is not necessary to have multiple earphones, which is convenient and space-saving. It should be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention, Appropriate changes and variations are intended to fall within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state of use of a headphone according to a preferred embodiment. Figure 2 is an exploded view of the plug member shown in Figure 1. Figure 3 is a partial cross-sectional view of the earphone shown in Figure 1. Fig. 4 is a perspective view showing another use state of the earphone shown in Fig. 1. Q Figure 5 is a partial cross-sectional view of the earphone shown in Figure 4. [Main component symbol description] Headphone 50 Plug component 20 Main lever 21 Stopper 23 Operating member 24 Earpiece 10 Conductor 30 First plug 22 Sleeve 25 Fixing body 26 201039656 Housing 27 Head 221 First tube 223 Second tube Body 26 first left channel contact 220 first right channel contact 222 first ground contact 224 second left channel contact 250 second right channel contact 252 second ground contact 254 raised 256 convex Ear 258 external thread 210 stop 23 receiving groove 270 slot 260 opening 262 assembly 264 recess 266 internal thread 240 〇 9