M308147 八、新型說明： 【新型所屬之技術領域】 本創作係有關於夾頭，尤指1起子夾頭。 【先前技術】 、參照附件’我國專利證書號數第M290799號之「伸縮 j吸取套筒構造」-案，參照第四_第五圖，其套筒本 體20之組設槽23容置一工具頭A的定位段c，並讓工具 頭A的工作段&及握持段b外霞 ^ ^ 于又D外路，该扣件50係扣設在該 :本：20表面的環槽22,該外套環別套 f 2〇外’該固定環40扣設於該外套環30,該麗縮彈复 60 —端頂抵該固定環4〇之第-、、、尹、 件50。 弟一p白緣43，另一端頂抵該扣 >藉此，同時參照第六圖，使用者在進行螺鎖工作時， 该外套每30端部的磁性元件31可磁吸金屬螺件且册 動該固定環40之第二階緣43壓縮該壓縮科 ^ 使該壓縮彈簧60另—端頂抵該扣件5〇。而螺鎖工:杏 時，使用者可施力讓該外套環3〇端部的磁性元件乍^ 金屬螺件το，使該壓縮彈簧60頂推該固定環4〇之^離 緣43,而露出工具頭A的握持段b。 弟一階 該習知結構於實用上仍有缺點，因習知結構 衍生出一些冗件，例如扣件5〇，及額外的加工製程=， 22"σ", %几長，降低生產效率，且提高製造成本，因而降低產業 5 M3 08147 競爭力，故實有必要加以改進。 因此，本創作想排除或至少減輕先前技術所遭遇的問 【新型内容】 本創作之『起子夾頭』所欲解決之技術問題在於，因 習知結構的設計，衍生出一些冗件，例如扣件，及額外的 加工製程，例如套筒本體表面的環槽加工，造成產品結構 _ 複雜，製程冗長，降低生產效率，且提高製造成本，因而 降低產業競爭力，故實有必要加以改進。 本創作係為一種起子夾頭，其包括有一夾頭本體、一 套件與一擋塊；該夾頭本體一端設有一套接部，該套接部 一端可供一起子頭穿設，另一端内縮延伸形成一結合部， 且該套接部另一端的端面設有一止擋面。該套件一端設有 -滑移部，另_端設有—齡部，·件套置於該夹頭本 體=’該套件可與該夾頭本體產生相對的位移，使該套件 在第位置與第二位置之間移動，該擋塊設置於該套件之 滑移部。藉此，當該套件在第一位置時，該限位部脫離該 套接部之止擔面，當該套件在第二位置時，該限位部抵靠 該止擋面。 其他目的、優點和本創作的新穎特性將從以下詳細的 描述與相關的附圖更加顯明。 【實施方式】 6 M308147 有關本創作所制之技術、手段及其功效，兹汽〜 佳實施例並配合圖式詳述如後，此僅供朗之用，=較 申請上並不受此種結構之限制。 利M308147 Eight, new description: [New technical field] This creation is about the chuck, especially the 1 clip. [Prior Art], refer to the attachment "The expansion and contraction j suction sleeve structure" of the Chinese Patent Certificate No. M290799, refer to the fourth to fifth figures, and the sleeve body 20 of the sleeve body 20 is provided with a tool. The positioning section c of the head A, and the working section & and the gripping section b of the tool head A are externally mounted on the outer path of the D, and the fastener 50 is fastened to the ring: 22: the ring groove 22 of the surface of the 20 The outer ring of the outer ring 40 is fastened to the outer ring 30. The end of the elastic ring 60 is abutted against the first, the, the yin, and the piece 50 of the fixing ring 4 . The younger one has a white edge 43, and the other end is abutted against the buckle. Thereby, while referring to the sixth figure, the magnetic element 31 of each 30-end portion of the outer casing can magnetically attract the metal screw when the user performs the screw locking operation. The second edge 43 of the fixing ring 40 compresses the compression mechanism to make the compression spring 60 end-to-end against the fastener 5〇. When the screw locker: apricot, the user can apply force to the magnetic element 乍 ^ metal screw το of the end of the outer ring of the outer ring, so that the compression spring 60 pushes the retaining ring 4 to the edge 43 The grip segment b of the tool head A is exposed. The first-order structure of the younger brother still has shortcomings in practical use, because the conventional structure derives some redundant parts, such as fasteners, and additional processing procedures =, 22 " σ ", % length, reducing production efficiency, and Increasing manufacturing costs and thus reducing the competitiveness of the industry 5 M3 08147, it is necessary to improve. Therefore, this creation wants to eliminate or at least alleviate the problems encountered in the prior art. [New content] The technical problem to be solved by the "starter chuck" of this creation is that some redundant parts, such as fasteners, are derived from the design of the conventional structure. And additional processing processes, such as ring groove machining on the surface of the sleeve body, result in product structure _ complex, lengthy process, reduced production efficiency, and increased manufacturing costs, thus reducing industrial competitiveness, so it is necessary to improve. The present invention is a type of collet chuck, which comprises a collet body, a sleeve and a stopper; the collet body is provided with a set of joints at one end, and one end of the sleeve portion can be inserted through the sub-head and the other end is The contraction extends to form a joint portion, and the end surface of the other end of the sleeve portion is provided with a stop surface. The kit has a sliding portion at one end and an aging portion at the other end, and the sleeve is placed on the collet body = 'The kit can be displaced relative to the collet body, so that the kit is in the first position Moving between the second positions, the stops are disposed in the slip portion of the kit. Thereby, when the kit is in the first position, the limiting portion is disengaged from the stopping surface of the socket portion, and when the sleeve is in the second position, the limiting portion abuts against the stopping surface. Other objects, advantages and novel features of the present invention will become more apparent from the detailed description and the accompanying drawings. [Embodiment] 6 M308147 The technology, means and functions of the creation of this creation, the best example of the steam and the detailed description of the following, this is only for the use of Lang, = not subject to this application Structural limitations. Profit
、，參照圖-與圖二，圖-為本創作之立體外觀圖 為本創作之立體分_，根據補作第—個實施例，其: 頭10包括有-夾頭本體20、一套件30與一擔塊务，、: 套件30套置於該夹頭本體2〇外，該套件3〇可與= 本體20產生相對的位移，使該套件3〇在第—位置與第一 位置之間移動’該播塊4G設置於該套件3()。其巾:、— 該夾頭本體20 -端設有一套接部21，該套接部？！ 具有第-端211與第二端212，該套接部21第一端2ιι於 軸向設有-容置空間213,該套接部21第_端211的端面 設有-支撐面214。該_本體2〇在該套接部21第 212内縮延伸形成一結合部215。 、两件30-端設有-滑移部31，該滑移部31轴向形 成-朝外漸擴之錐形孔311。該套件別另—端設有一限位 部32，該限位部32轴向設有一穿孔321。該滑移部μ與 該限位部32之間設有-套合部33 ,該套合部％轴向設有 -套孔33卜該套件30套置於該夾頭本體2〇夕卜該套件 3〇可與該失頭本體20產生相對的位移，使該套件3〇在第 一位置與第二位置之間移動。 該擋塊4G可實施為-磁鐵，該魏4()麵設有一插 孔W，該擋塊40設置於該套件3〇之滑移部31的錐形孔 311内，错由該套件30在第一位置與第二位置之間移動， / 7 M308147 使該擋塊40可與談夾頭本體2〇產生相對的位移。 參照圖三，為本創作之剖視圖。該套接部21與該結 合部215之間形成階梯狀，該套合部33之套孔331的内 位略大於该套接部21的外徑’該限位部32之穿孔321的 内徑小於該套接部21的外徑，該限位部32之穿孔321的 内徑略大於該結合部215的外徑。該套接部21的第二端 212之端面設有一止擋面216，該限位部32於該套件30 徑向環設有一抵靠面322，該抵靠面322可抵靠該止擋面 216。當該套件30在第一位置時，該套件之限位部 的抵罪面322脫離該夾頭本體2〇之套接部21的止擔面 216，而該支撐面214可支稽該擋塊4〇，以防該套件3〇脫 出於央頭本體20 ’實為一進步之設計者。 參Ik圖四，為本創作裝設起子頭之使用狀態示音 圖。該夾頭本體20之套接部21的容置空間213容置有該 起子頭50之定位部51，而該擋塊4〇之插孔41供該起子 碩50之掣動部52穿設，該夾頭本體2〇之結合部215可 裝設於一氣動工具（圖中未示）之一端。當該套件3〇在第 二位置時，該限位部32之抵靠面322抵靠該套接部21之 止擋面216，以防該套件30脫出於夾頭本體2〇，實為一 進步之设什者。而該播塊40脫離該夾頭本體之套^部 21的支撐面214，且移動至該起子頭5〇之掣動部52的琴 周附近，以供使用者藉由該氣動工具帶動該起子頭5〇之 掣動部52驅動螺件（圖中未示）時，可磁吸固定該.， 避免該螺件掉落於地板。 η ’ M308147 參照圖五，為本創作第二個實施例，其與第一個實施 例的差別在於，其夾頭60更包括有一定位件，該定位 件70可實施為一鋼珠，該夾頭本體8〇之套接部8丨_向 設有一連通該容置空間811之通孔812，該通孔812可容 置有該定位件7〇。 谷 麥照圖六，為本創作第二個實施例之剖視圖，該套件 30之滑移部31的錐形孔311具有壁面312，該定位件7〇Referring to the drawings - and FIG. 2, the three-dimensional appearance of the present creation is a three-dimensional appearance of the creation. According to the supplementary embodiment, the head 10 includes a chuck body 20 and a kit 30. A set of blocks, and: a sleeve 30 is placed outside the body 2 of the collet, and the kit 3 〇 can be displaced relative to the body 20 to move the kit 3 between the first position and the first position 'The broadcast block 4G is set in the kit 3(). The towel:, - the collet body 20 - end is provided with a set of joints 21, the socket portion? ! There is a first end 211 and a second end 212. The first end 2 of the socket portion 21 is provided with an accommodating space 213 in the axial direction. The end surface of the _ end 211 of the socket portion 21 is provided with a support surface 214. The body 2 is internally extended in the 212th portion of the socket portion 21 to form a joint portion 215. Two 30-ends are provided with a sliding portion 31 which axially forms a tapered hole 311 which tapers outward. The other end of the kit is provided with a limiting portion 32, and the limiting portion 32 is axially provided with a through hole 321 . A sleeve portion 33 is disposed between the sliding portion μ and the limiting portion 32, and the sleeve portion is axially provided with a sleeve hole 33. The sleeve 30 is sleeved on the chuck body 2 The kit 3 can be displaced relative to the lost head body 20 to move the kit 3 between the first position and the second position. The stopper 4G can be implemented as a magnet, and the Wei 4() surface is provided with a socket W. The stopper 40 is disposed in the tapered hole 311 of the sliding portion 31 of the sleeve 3, and is incorrectly placed by the sleeve 30. Moving between the first position and the second position, / 7 M308147 causes the stop 40 to be displaced relative to the collet body 2 . Referring to Figure 3, a cross-sectional view of the present creation. A stepped shape is formed between the sleeve portion 21 and the joint portion 215. The inner position of the sleeve hole 331 of the sleeve portion 33 is slightly larger than the outer diameter of the sleeve portion 21. The inner diameter of the through hole 321 of the limiting portion 32 is slightly larger than the outer diameter of the joint portion 215. The end surface of the second end 212 of the sleeve portion 21 is provided with a stop surface 216. The limiting portion 32 is provided with an abutting surface 322 on the radial ring of the sleeve 30. The abutting surface 322 can abut the stop surface. 216. When the kit 30 is in the first position, the escaping surface 322 of the limiting portion of the sleeve is detached from the stopping surface 216 of the socket portion 21 of the chuck body 2, and the supporting surface 214 can support the stopper 4 Hey, in case the kit 3 is out of the head of the body 20' is a progressive designer. Refer to Figure 4 of Ik for the purpose of setting up the sound status of the head of the creation. The receiving space 213 of the socket portion 21 of the chuck body 20 accommodates the positioning portion 51 of the screwdriver head 50, and the insertion hole 41 of the stopper block 4 is disposed through the rocking portion 52 of the screwdriver 50. The joint portion 215 of the chuck body 2 can be mounted at one end of a pneumatic tool (not shown). When the sleeve 3 is in the second position, the abutting surface 322 of the limiting portion 32 abuts against the stopping surface 216 of the socket portion 21, so as to prevent the sleeve 30 from coming out of the chuck body 2〇, A set of progress. The broadcast block 40 is disengaged from the support surface 214 of the sleeve portion 21 of the chuck body, and is moved to the vicinity of the periphery of the tilting portion 52 of the screwdriver head 5 for the user to drive the screwdriver by the pneumatic tool. When the head portion 52 of the head portion 52 drives the screw member (not shown), the screw can be magnetically fixed to prevent the screw from falling on the floor. η ' M308147 Referring to FIG. 5 , a second embodiment of the present invention is different from the first embodiment in that the chuck 60 further includes a positioning member, and the positioning member 70 can be implemented as a steel ball. The socket 8 of the body 8 is provided with a through hole 812 that communicates with the receiving space 811. The through hole 812 can accommodate the positioning member 7〇. Fig. 6 is a cross-sectional view of the second embodiment of the present invention. The tapered hole 311 of the sliding portion 31 of the kit 30 has a wall surface 312, and the positioning member 7〇
容納於該通孔812，且該粒件7〇 -端抵靠該滑移部31 之壁面312 〇 爹π圖七，為本創作第二個實施例裝設起子頭5〇之 使用狀態示意圖。藉由向下移動該起子頭5〇之定位部Μ 以穿設於該播塊4〇之插孔41，而進入該夾頭本體8〇之 置空間811内’該套件30在第一位置，該套件30之限位 =28ΓΓ 322臟^綱80之套細丨的止 定位件7。抵靠該綠_ ，為圖七動作之延續，該套件3G之套合部 穿m具有壁面332，當該起子㈣之定位㈣ 議μ之陶&的抵靠面微 ^該夾頭本體8G之套接部81的止擋面⑽， 定位件7。-端，使_ 4〇脫離於該套接部81之支擇面814。移而該播塊 M308147 爹照圖九，為本創作第三個實施例，其與第一個實施 例的差別在於，其爽頭90更包括有一定位件1〇〇，該定位 件100可貫施為—扣環，該定位件1〇〇槪呈c形，該定位 件100設有一喪部101，且該定位件1〇〇 —端向内彎折形 成一卡部1〇2。該爽頭本體110之套接部111徑向敦有— 連通該容置空間112之航113，且該套接部ln設有— 連通該開孔113之j袞槽114。 蒼,¾圖十，為本創作第三個實施例之剖視圖。該套件 30在第一位置’該套件之限位部32的抵靠面322脫離 該夾頭本體110之套接部m的止擔面115，該定位件1〇〇 之欲部1 山οι谈設於該夾頭本體11〇之套接部ui的環槽 114 ’雜部101外周緣頂抵該套件30之滑移部31的壁 面 312。 ί "、、囷十，為本創作第三個實施例裝設起子頭5〇 之使用狀態示意。該套件3G在第二位置，該套件3〇之 限位部32職靠面322抵靠該魏本體m之止擔面 115 »亥定位件1〇〇之欲部1〇1嵌設於該夾頭本體[Μ之 套接部111的環槽114，且該套件3〇之套合部33之壁面 332頂推該定位件1〇〇之喪部1〇1，而該定位件⑽之卡 部,穿設該開孔113，且卡掣於該起子頭5〇之凹部53， 該定位件1G0可限制該夾頭本體11G與該起子頭別的相 對位移。而該播塊40麟該夾頭本體11〇之套接部⑴ 的支擇面116 ’而移動至該起句5G之軸部52的環周 附近。 M308147 參照圖十二與圖十三，為本創作第四個實施例，其與 第一個實施例的差別在於，其夾頭12〇更包括有一磁性體 130，該磁性體130可實施為一磁鐵，該失頭本體2〇之套 接部21設有一連通該容置空間213之容室217，該容室 217設置有該磁性體130。參照圖十四，為本創作第四個 實施例裝狄子頭5Q之使用狀態示意圖，其顯示該起子 頭50之定位部51容置於該夾頭本體2〇之容置空間213 , 且該磁性體130磁吸固定談起子頭5〇，以防該起子頭5〇 脫出於該夾頭本體2〇之容置空間213。 就以上所述可以歸納出本創作具有以下之優點： 1. 本創作『起子夾頭』，其中本創作可藉由該套件之 限位部的抵靠面抵靠該夾頭本體之套接部的止 擔靠該套接部之捕面，以_套件脫出‘失頭本 體’實為一進步之設計者。 2. 本創作『起子夾頭』，其中本創作構件簡單，加工 ^組裝容易’可有效減少製程，及大幅降低製造成本，提 高生產效率，以提高產業競爭力。 由是觀之，本創作極具產業上利用價值，且又未見有 相同或類似之創作出現於國内外刊物或公開使用，實已符 合專利法蚊之積極及消極要件，理應料新型專利。 惟上所述者，僅為本創作之較佳實施例而已，當不能 以之限定摘作實施之朗，故軌錄之變更或^效元 件之置換，或依賴㈣料職_作之解變化與修 飾白應仍屬本創作專利涵蓋之範_0 11 M308147 【圖式簡單說明】 圖一：為本創作之立體外觀圖。 圖二··為本創作之立體分解圖。 圖二：為本創作之剖視圖。 圖四··為本創作裝設起子頭之使用狀態示意圖。 圖五··為本創作第二個實施例之立體分解圓。 圖六：為本創作第二個實施例之剖視圖。 圖七：為本創作第二個實施例裝設起子頭之使用狀態示意 圖。 圖八·為圖七動作之延續。 圖九··為本創作第三個實施例之立體分解圖。 圖十：為本創作第三個實施例之剖視圖。 圖十一：為本創作第三個實施例裝設起子頭之使用狀態示 意圖。 圖十二：為本創作第四個實施例之立體分解圖。 圖十三··為本創作第四個實施例之剖視圖。 圖十四：為本創作第四個實施例裝設起子頭之使用狀態示 意圖。 附件··為我國專利證書號數第M290799號專利案。 【元件符號之簡單說明】 10 夾頭 20 夾頭本體 21套接部 12 M308147It is accommodated in the through hole 812, and the edge of the granular member 7 is abutted against the wall surface 312 of the sliding portion 31, which is a schematic view of the use state of the second embodiment. The kit 30 is placed in the first position by moving the positioning portion Μ of the driver head 5 穿 to the insertion hole 41 of the broadcast block 4〇 into the space 811 of the chuck body 8〇, The limit of the kit 30 = 28 ΓΓ 322 dirty ^ 80 sets of fine stop positioning member 7. Abutting the green _, for the continuation of the action of Figure 7, the sleeve of the kit 3G has a wall 332, and when the driver (4) is positioned (four), the abutment surface of the ceramic & The stop surface (10) of the sleeve portion 81, the positioning member 7. At the end, the _ 4 〇 is disengaged from the supporting surface 814 of the socket portion 81. Moving to the broadcast block M308147, referring to FIG. 9 , is a third embodiment of the present invention, which differs from the first embodiment in that the cool head 90 further includes a positioning member 1 〇〇, the positioning member 100 can be The positioning member 1 is formed in a c-shape, and the positioning member 100 is provided with a portion 101, and the end portion of the positioning member 1 is bent inward to form a card portion 1〇2. The socket portion 111 of the head body 110 is radially disposed to communicate with the space 113 of the accommodating space 112, and the socket portion ln is provided with a slot 114 that communicates with the opening 113. Cang, 3⁄4 Figure 10, is a cross-sectional view of the third embodiment of the creation. In the first position, the abutment surface 322 of the limiting portion 32 of the sleeve is separated from the stopping surface 115 of the socket portion m of the chuck body 110, and the positioning member 1 is ambiguous. The outer circumferential edge of the annular groove 114' of the socket portion ui of the chuck body 11 is abutted against the wall surface 312 of the sliding portion 31 of the sleeve 30. ί ",, 囷10, for the third embodiment of the creation of the creation of the starter head 5 〇 state of use. The kit 3G is in the second position, and the retaining portion 32 of the sleeve portion 3 of the kit 3 abuts against the stop surface 115 of the Wei body m. The cover member 1〇〇1 is embedded in the clip. The head body [the ring groove 114 of the socket portion 111 of the sleeve, and the wall surface 332 of the sleeve portion 33 of the kit 3 pushes the portion 1〇1 of the positioning member 1〇〇, and the card portion of the positioning member (10) The opening 113 is inserted into the recess 53 of the screwdriver head 5, and the positioning member 1G0 can limit the relative displacement of the chuck body 11G and the driver head. The broadcast block 40 is moved to the vicinity of the circumference of the shaft portion 52 of the sentence 5G by the support surface 116' of the socket portion (1) of the chuck body 11. M308147 Referring to FIG. 12 and FIG. 13, a fourth embodiment of the present invention is different from the first embodiment in that the chuck 12 includes a magnetic body 130, and the magnetic body 130 can be implemented as a The magnetic housing, the socket portion 21 of the head body 2 is provided with a chamber 217 that communicates with the accommodating space 213. The chamber 217 is provided with the magnetic body 130. Referring to FIG. 14 , a schematic view of the use state of the fourth embodiment of the present invention, in which the positioning portion 51 of the screwdriver head 50 is received in the accommodating space 213 of the chuck body 2 , The magnetic body 130 magnetically fixes the screwdriver head 5〇 in order to prevent the driver head 5 from coming off the accommodating space 213 of the chuck body 2〇. As far as the above is concerned, it can be concluded that the creation has the following advantages: 1. The creation of the "starter chuck", wherein the creation can be abutted against the sleeve portion of the collet body by the abutting surface of the limiting portion of the sleeve The stop of the socket is the designer of the advancement of the hood. 2. The creation of the “starter chuck”, in which the creation component is simple, and the assembly is easy to assemble, can effectively reduce the process, greatly reduce the manufacturing cost, and improve the production efficiency to improve the industrial competitiveness. From the point of view, this creation is of great industrial value, and there is no similar or similar creation appearing in domestic and foreign publications or public use. It has already met the positive and negative elements of the patented mosquito, and should be treated with new patents. However, the above description is only a preferred embodiment of the present invention. When it cannot be limited to the implementation of the lang, the change of the track record or the replacement of the component, or the dependence of (4) the job _ change And the modified white should still belong to the scope of this creation patent_0 11 M308147 [Simple description of the figure] Figure 1: The three-dimensional appearance of the creation. Figure 2·· is a three-dimensional exploded view of the creation. Figure 2: A cross-sectional view of the creation. Figure 4·· Schematic diagram of the state of use of the creation head of this creation. Figure 5···························· Figure 6 is a cross-sectional view of the second embodiment of the present invention. Figure 7: Schematic diagram of the state of use of the driver head for the second embodiment of the creation. Figure VIII is a continuation of the action of Figure 7. Fig. 9 is a perspective exploded view of the third embodiment of the creation. Figure 10 is a cross-sectional view showing a third embodiment of the present creation. Figure 11 is a schematic view showing the state of use of the first embodiment of the present invention. Figure 12 is a perspective exploded view of the fourth embodiment of the present invention. Figure 13 is a cross-sectional view of the fourth embodiment of the present creation. Fig. 14 is a view showing the state of use of the driver head in the fourth embodiment of the present invention. Annex·· is the patent case No. M290799 of China Patent Certificate No. [Simple description of component symbol] 10 Chuck 20 Chuck body 21 Socket part 12 M308147
211 第一端 212 第二端 213 容置空間 214 支撐面 215 結合部 216 止擋面 217 容室 30 套件 31 滑移部 311 錐形孔 312 壁面 32 限位部 321 穿孔 322 抵靠面 33 套合部 331 套孔 332 壁面 40 擋塊 41 插孔 50 起子頭 51 定位部 52 掣動部 53 凹部 60 夾頭 70 定位件 80 夾頭本體 81 套接部 811 容置空間 812 通孔 813 止擔面 814 支撐面 90 夾頭 100 定位件 101 散部 102 卡部 110 夾頭本體 111 套接部 112 容置空間 113 開孔 114環槽 115 止擋面 116 支撐面 120 夾頭 130 磁性體 13211 first end 212 second end 213 accommodating space 214 support surface 215 joint portion 216 stop surface 217 chamber 30 kit 31 sliding portion 311 tapered hole 312 wall surface 32 321 perforation 322 abutment surface 33 Section 331 Set of holes 332 Wall surface 40 Stopper 41 Jack 50 Screwdriver head 51 Positioning part 52 Tilting part 53 Recessed part 60 Chuck 70 Positioning member 80 Chuck body 81 Socket part 811 accommodating space 812 Through hole 813 Stop surface 814 Support surface 90 Chuck 100 Positioning member 101 Loose portion 102 Card portion 110 Chuck body 111 Sleeve portion 112 accommodating space 113 Opening hole 114 Ring groove 115 Stop surface 116 Support surface 120 Chuck 130 Magnetic body 13