201224302 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種緊固件、與該緊固件配合之驅動件及成 型該緊固件之衝子。 【先前技術】 [0002] 緊固件作為標準通用零件，廣泛應用於機械行業之各領 域。常見之緊固件之頭部包括内六角結構、梅花結構及 近年來發展較快之TORX(增強型内梅花頭）結構。201224302 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a fastener, a driving member mated with the fastener, and a punch for molding the fastener. [Prior Art] [0002] As a standard universal part, fasteners are widely used in various fields of the mechanical industry. Common fastener heads include a hexagonal structure, a plum structure, and a TORX (enhanced inner plum head) structure that has developed rapidly in recent years.
[0003] 為使緊固件與驅動其轉動之驅動工具配合時驅動角較小 ，以便使扭矩損失較小，從而達到較好之驅動效果，梅 花頭緊固件，尤其是TORX緊固件頭部之凹槽包括間隔向 頭部中軸線凸出之複數凸齒，複數凸齒之間形成弧形凹 槽。使用外輪廓與緊固件頭部之凹槽結構相應之驅動件 與緊固件配合，藉由驅動件之外側對緊固件頭部之凹槽 之内侧壁之抵推力驅動緊固件轉動。然，驅動件之外侧 僅與緊固件頭部之凹槽内每一凸齒之一侧壁接觸並對其 施加抵推力，當使用一段時間後’由於驅動件及緊固件 頭部之凹槽内壁之磨損，二者之間配合時間隙過大，驅 動件無法有效驅動緊固件轉動，使用壽命較短。 【發明内容】 [0004] 鑒於上述情況，有必要提供一種使用壽命較長且不易失 效之緊固件’並提供一種與該緊固件配合之驅動件及成 型該緊固件之衝子》 —種緊固件’其包括連接部及頭部，頭部開設有配合槽 ’配合槽内形成複數向頭部之中轴線凸出之凸齒，相鄰 099143123 表單蝙號A0101 第3頁/共19頁 0992074698-0 [0005] 201224302 [0006] [0007] [0008] [0009] [0010] 凸齒之間形成向遠離緊固件之頭部之中轴線之方向凹陷 之凹槽，凹槽内形成至少一向頭部之令軸線凸出之凸起 〇 一種驅動件，其包括桿部及驅動部，其中驅動部具有與 上述緊固件之配合槽結構相匹配之外輪廓。 一種衝子，其具有衝頭，且該衝頭具有與上述緊固件之 配合槽結構相匹配之外輪廓。 e亥緊固件之頭部之配合槽内形成之複數凹槽内還設置向 頭部之中軸線凸出之凸起，驅動件與此結構之緊固件配 ω時，驅動力作用於該複數凸起上，嘗德用一段時間導 致緊固件或驅動件發生一定磨損後，燦動件與緊固件之 配合槽内之凸起脫離，此時驅動件之驅動力作用於凸齒 之侧壁上，仍可有效驅動緊固件。因此，本發明之緊固 件可使用較長時間且不易失效。 【實施方式】 下面將結合附圖及具體實施方式對本發明之緊固件、驅 動該緊固件之驅動件及成型該緊固件之衝子作進一步之 詳細說明。 請參閱圖1及圖2，緊固件100包括頭部丨丨及與頭部11相 連之連接部13，頭部11遠離連接部13之一端具有端面 111，且從端面111之中心部位向内凹陷形成配合槽丨】3 。連接部13為桿狀結構，其上開設有螺紋131。頭部 連接部13之間具有一環形斜面1 5，頭部丨丨與連接部丨3藉 由該環形斜面1 5連接。 099143123 表單編號A0101 第4頁/共19頁 0992074698-0 201224302 [0011] 請一併參閱圖3，緊固件1 〇 q之頭部丨丨之配合槽丨丨3内形 成複數向頭部11之中軸線（圖未標）凸出之凸齒114，相 鄰&齒114之間形成向遠離頭部η之中轴線之方向凹陷之 凹槽115 ’凹槽115内形成向頭部u之中軸線凸出之凸起 116。 [0012] ❹ ❹ [0013] 凸齒114包括一側之二侧壁1141及連接二側壁11 41之連 接壁1143。側壁1141與連接壁丨丨43平滑連接，且侧壁 1141與過頭部11之中軸線之面重合，即側壁1141沿頭部 11之半徑方向延伸。凹槽115具有底壁1151，該底壁 11 51與凸齒114之側壁1141平滑連接，且凹槽丨丨云鄰近頭 部11之中軸線處之開口沿圓周方向之寬度!^小於底壁 1151沿圓周方向之寬度L2。凸起116從底壁1151向頭部 11之中轴線凸出，且凸起116與底壁1151亦為平滑連接 。本實施方式中，凸齒114之側壁1141與連接壁1143、 凹槽115之底壁1151與凸齒114之側壁1141與凸起116均 藉由圓角連接。配合槽113内形成六沿同一圓周均勻分佈 :：.... ........ 之凸齒114及六凹槽115，每二四;115内形成一凸起116 ，且凸起116為弧形結構。當然，配合槽h 3内亦可形成 三、四等其他數目之凸齒114與凹槽1〗5，每一凹槽115 内亦可形成複數凸起116，且凸起116可為棱角經過圓角 化處理之矩形塊等其他結構。 \ 驅動件200包括桿部21及與桿部21相連之驅動部23。桿 部21包括連接端部211及形成於連接端部211遠離驅動部 23之一側之軸肩213，連接端部211之外徑略大於或等於 驅動部23之外輪廓尺寸且小於軸肩213之外徑。 099143123 表單編號A0101 第5頁/共19頁 0992074698-0 201224302 [0014] 請一併參閱圖4，驅動部23之外部輪廓與緊固件100之頭 部11之配合槽11 3之結構相匹配。驅動部23包括沿圓周方 向均勻分佈之複數配合齒231及形成於相鄰配合齒231之 間之容納槽233。配合齒231遠離驅動部23之中軸線之外 側面2311向内凹陷形成凹陷部2313，且配合齒231兩侧 還形成與外侧面2311連接之抵持侧面2315。配合齒231 之根部沿圓周方向之寬度C1小於配合齒231之末端沿圓周 方向之寬度C2。配合齒231之外侧面2311與配合齒231之 抵持側面2315為平滑連接。抵持側面2315與過驅動件 200之驅動部23之中軸線之面C重合。 [0015] 驅動件200之驅動部23之配#^癒231及蠢麵槽233之所有 連接過渡部位均為圓角，且相同結構圓角處之圓心位於 以驅動部23之中軸線為中心之同一圓周上。此結構之驅 動件200之成型工序較為簡單。 [0016] 本實施方式中’驅動部23包括六配合齒231及六容納槽 233，每一配合齒231上開設一凹陷部2313，凹陷部2313 為弧形凹槽結構，且配合齒231之外側面2311與其二側為 圓角連接。當然，驅動部23之具體結構與緊固件1〇〇之頭 邛11之配合槽113之結構匹配，故驅動部2 3亦可包括三、 四等配合齒231和容納槽233，每一配合齒231上亦可開 設複數凹陷部2313，且凹陷部2313亦可為棱角處圓角化 之矩形凹槽等結構。 [0017] 請參閱圖5 ’衝子3〇〇包括本體31及從本體31 一端凸伸形 成之衝頭33。本體31為圓柱體結構，當然亦可為橫戴面 099143123 為矩形或其他形狀之桿狀結構。衝頭33之具體結構與緊 表單編號A0101 第6 w/共19頁 0992074698-0 201224302 [0018] [0019] ο [0020] [0021] 固件100之頭部11之配合槽113結構相對應’其包括於圓 周方向均勻分佈之複數齒狀結構之切削刃331，相鄰切削 刃331之間形成切削槽333。 切削刃331之外侧開設向内凹陷之凹谷331丨，且切削刃 3 31之根部沿圓周方向之寬度小於末端沿圓周方向之寬度 。切削刀331之二侧與外侧平滑連接。本實施方式中，切 削刃331及切削槽333之數目均為六，且每個切削刃331 上開設一凹谷3311，且凹谷3311為弧形槽，切削刃331 之二側與外側藉由圓角連接。當然，切削刃331和切削槽 333之數目亦可為三、四等其他數目，凹谷331丨亦可為棱 角處圓角化之矩形槽等其他結構。 請參閱圖1至圖6，當使用驅動件2〇〇驅動緊固件1〇〇時， 驅動件200之驅動部23插入緊固件1〇〇之頭部η之配合槽 113内，其中驅動部23之配合齒231之凹陷部2313與緊固 件100之頭部11之凹槽115内之凸起U6配合，並藉由配 合齒231對凸起116施加圓周方向之抵推力，從而使緊固 件10 0與驅動件200同步轉動 <=當使用一段時間後，因使 用過程中之磨損’配合齒231及凸起116之外輪廓尺寸減 小’導致配合齒231與凸起116脫離，此時，配合齒231 之抵持側面231 5直接對凸齒114之侧壁1141施加圓周方 向之抵推力，從而驅動緊固件1〇〇轉動。 使用衝子300成型緊固件1〇〇時，利用衝頭對圓柱狀之頭 部11進行衝壓，進而成型出頭部11之配合槽113。 因驅動件200之配合齒231先與緊固件100之凸起116配合 099143123 表單編號A0101 第7頁/共19頁 0992074698-0 201224302 ’當彼此之間產生較大磨損後，再與凸齒114配合，故相 對以往之緊固件與驅動件之間僅允許發生一次磨損而言 ’可具有較長之使用壽命且不易失效。 [0022] 驅動件200之配合齒231之抵持側面23 15抵持於緊固件 100之配合槽11 3内之凸齒114之侧壁1141以驅動緊固件 1〇〇轉動時’抵持側面231 5與側壁1141為面接觸，且接 觸面與過驅動件200之中軸線及緊固件1〇〇之中軸線之面 重合。故’抵持側面2 31 5與側壁1141之間之驅動角，即 二者切線與過切線處之直徑之夾角，為〇度，故驅動件 200在抵持側面2315與側壁1141之切線之法線方向之分 力F為最大，由此可傳遞最大扭矩，具有義高驅動效率。 [0023] 因抵持侧面2 31 5與侧壁11 41為面接觸且接觸面與過驅動 件200之中軸線及緊固件1〇〇之中轴線之面重合，故二者 即使磨損後仍可保持為面接觸或至少可以保持接觸部位 仍處於驅動件200之中轴線及緊固件1〇〇之中軸線之面内 ，進而可始終傳遞最大扭矩。 [0024] 緊固件100之配合槽113之凹槽115鄰近頭部11之中軸線 處之開口沿圓周方向之寬度L1小於底壁11 51沿圓周方向 之寬度L2 ’且驅動件200之配合齒231之根部沿圓周方向 之寬度C1小於配合齒231之末端沿圓周方向之寬度C2，可 保證驅動件200之配合齒231不易從緊固件1〇〇之配合槽 113之凹槽115内脫離，進一步提高了配合之可靠性。 [0025] 緊固件100之凸齒114之侧壁1141與連接壁1143、凹槽 115之底壁1151與凸齒114之側壁1141與凸起116均為平 099143123 表單編號A0101 第8頁/共19頁 0992074698-0 201224302 滑連接， 231 之二 〇件2 〇 〇之配合齒2 31之外側面2 311與配合齒[0003] In order to make the fasteners cooperate with the driving tool for driving the rotation thereof, the driving angle is small, so that the torque loss is small, so as to achieve a better driving effect, the plum head fasteners, especially the heads of the TORX fasteners are concave. The groove includes a plurality of convex teeth that are spaced apart from the central axis of the head, and an arcuate groove is formed between the plurality of convex teeth. The drive member, which corresponds to the groove structure of the fastener head, is engaged with the fastener to drive the fastener to rotate by the abutting force of the outer side wall of the groove of the fastener head on the outer side of the drive member. However, the outer side of the driving member is only in contact with the side wall of one of the convex teeth in the groove of the fastener head and applies abutting force thereto, after a period of use 'because the inner wall of the groove of the driving member and the fastener head The wear is too large, and the gap between the two is too large, and the driving member cannot effectively drive the rotation of the fastener, and the service life is short. SUMMARY OF THE INVENTION [0004] In view of the above circumstances, it is necessary to provide a fastener that has a long service life and is not easy to fail 'and provides a driving member that cooperates with the fastener and a punch that forms the fastener." 'It includes the connecting portion and the head, and the head is provided with a matching groove' to form a plurality of convex teeth protruding in the groove to the central axis of the head, adjacent to 099143123 form bat number A0101 page 3 / 19 pages 0992074698- [0005] [0006] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] [0010] The protrusion protruding from the axis is a driving member comprising a rod portion and a driving portion, wherein the driving portion has a contour that matches the mating groove structure of the fastener. A punch having a punch and having a contour that matches the mating groove structure of the fastener described above. The plurality of grooves formed in the matching groove of the head of the e-fast fastener are further provided with a protrusion protruding toward the central axis of the head, and when the driving member and the fastener of the structure are matched with ω, the driving force acts on the complex convex From the beginning, after a certain period of time, the fastener or the driving member is worn out, the protrusion of the movable member and the engaging groove of the fastener is disengaged, and the driving force of the driving member acts on the side wall of the protruding tooth. The fasteners can still be driven efficiently. Therefore, the fastener of the present invention can be used for a long time and is not easily broken. [Embodiment] Hereinafter, a fastener of the present invention, a driving member for driving the fastener, and a punch for molding the fastener will be further described in detail with reference to the accompanying drawings and specific embodiments. Referring to FIGS. 1 and 2, the fastener 100 includes a head portion and a connecting portion 13 connected to the head portion 11. The head portion 11 has an end surface 111 away from one end of the connecting portion 13, and is recessed inward from a central portion of the end surface 111. Form a matching groove] 3 . The connecting portion 13 has a rod-like structure with a thread 131 formed thereon. The head connecting portion 13 has an annular bevel 15 therebetween, and the head portion and the connecting portion 3 are connected by the annular bevel 15 . 099143123 Form No. A0101 Page 4 / Total 19 Page 0992074698-0 201224302 [0011] Please refer to FIG. 3 together, the head of the fastener 1 〇q is formed in the matching groove 3 to form a plurality of heads 11 The convex teeth 114 protruding from the axis (not shown) form a groove 115 between the adjacent &litude teeth 114 that is recessed away from the axis of the head η. The groove 115 is formed in the head u. The protrusion 116 of the axis protrudes. [0012] The male tooth 114 includes two side walls 1141 and a connecting wall 1143 connecting the two side walls 11 41. The side wall 1141 is smoothly connected to the connecting wall 43, and the side wall 1141 coincides with the surface of the central portion of the head portion 11, i.e., the side wall 1141 extends in the radial direction of the head portion 11. The groove 115 has a bottom wall 1151 which is smoothly connected with the side wall 1141 of the convex tooth 114, and the groove cloud is adjacent to the width of the opening at the central axis of the head 11 in the circumferential direction! ^ is smaller than the bottom wall 1151 The width L2 in the circumferential direction. The projection 116 projects from the bottom wall 1151 to the central axis of the head 11, and the projection 116 and the bottom wall 1151 are also smoothly connected. In this embodiment, the side wall 1141 of the protruding tooth 114 and the connecting wall 1143, the bottom wall 1151 of the recess 115, and the side wall 1141 and the projection 116 of the protruding tooth 114 are connected by rounded corners. In the matching groove 113, a convex tooth 114 and a six groove 115 which are evenly distributed along the same circumference are formed along the same circumference: a protrusion 116 is formed in each of the four; 115, and the protrusion is formed. 116 is a curved structure. Certainly, the number of the convex teeth 114 and the groove 1 _ 5 may be formed in the matching groove h 3 , and the plurality of protrusions 116 may be formed in each of the grooves 115 , and the protrusions 116 may be rounded and rounded. Other structures such as rectangular blocks of keratinization. The driving member 200 includes a rod portion 21 and a driving portion 23 connected to the rod portion 21. The rod portion 21 includes a connecting end portion 211 and a shoulder 213 formed on a side of the connecting end portion 211 away from the driving portion 23, and the outer diameter of the connecting end portion 211 is slightly larger than or equal to the outer contour size of the driving portion 23 and smaller than the shoulder 213. The outer diameter. 099143123 Form No. A0101 Page 5 of 19 0992074698-0 201224302 [0014] Referring to FIG. 4 together, the outer contour of the driving portion 23 matches the structure of the fitting groove 11 of the head portion 11 of the fastener 100. The driving portion 23 includes a plurality of matching teeth 231 uniformly distributed in the circumferential direction and a receiving groove 233 formed between the adjacent fitting teeth 231. The engaging teeth 231 are recessed inwardly from the outer side surface 2311 of the driving portion 23 to form a recessed portion 2313, and the abutting side surface 2315 of the engaging tooth 231 is further connected to the outer side surface 2311. The width C1 of the root portion of the fitting tooth 231 in the circumferential direction is smaller than the width C2 of the end of the fitting tooth 231 in the circumferential direction. The outer side surface 2311 of the mating tooth 231 and the abutting side surface 2315 of the mating tooth 231 are smoothly connected. The abutting side surface 2315 coincides with the surface C of the central axis of the driving portion 23 of the overdrive member 200. [0015] All the connection transition portions of the driving portion 23 of the driving member 200 and the matte surface groove 233 are rounded, and the center of the rounded corner of the same structure is located at the center of the driving portion 23 On the same circumference. The molding process of the actuator 200 of this structure is relatively simple. [0016] In the present embodiment, the driving portion 23 includes a six-fitted tooth 231 and a six-receiving groove 233. Each of the engaging teeth 231 defines a recessed portion 2313. The recessed portion 2313 has an arc-shaped groove structure and is external to the tooth 231. The side surface 2311 is connected to its two sides in a rounded corner. Of course, the specific structure of the driving portion 23 is matched with the structure of the matching groove 113 of the head 邛 11 of the fastener 1 , so the driving portion 23 can also include three or four matching teeth 231 and a receiving groove 233 , each of which has a matching tooth A plurality of recessed portions 2313 may be formed in the 231, and the recessed portion 2313 may also be a rectangular recessed corner or the like at the corners. [0017] Referring to FIG. 5, the punch 3 includes a body 31 and a punch 33 formed to protrude from one end of the body 31. The body 31 has a cylindrical structure, and may of course be a rod-shaped structure in which the horizontal wearing surface 099143123 is rectangular or other shapes. The specific structure of the punch 33 and the tight form number A0101 6w/19 pages 0992074698-0 201224302 [0019] [0020] [0021] The fitting groove 113 of the head portion 11 of the firmware 100 corresponds to the structure A cutting edge 331 including a plurality of dentate structures uniformly distributed in the circumferential direction forms a cutting groove 333 between adjacent cutting edges 331. The outer side of the cutting edge 331 has an inwardly recessed valley 331, and the width of the root of the cutting edge 31 is circumferentially smaller than the width of the end in the circumferential direction. The two sides of the cutter 331 are smoothly connected to the outside. In this embodiment, the number of the cutting edge 331 and the cutting groove 333 is six, and each of the cutting edges 331 defines a valley 3311, and the valley 3311 is an arc groove, and the two sides and the outer side of the cutting edge 331 are Rounded corners. Of course, the number of the cutting edges 331 and the cutting grooves 333 may be other numbers such as three or four, and the valleys 331 may be other structures such as rectangular grooves with rounded corners. Referring to FIG. 1 to FIG. 6, when the driving member 2 is used to drive the fastener 1 , the driving portion 23 of the driving member 200 is inserted into the engaging groove 113 of the head n of the fastener 1 , wherein the driving portion 23 The recessed portion 2313 of the mating tooth 231 cooperates with the protrusion U6 in the recess 115 of the head portion 11 of the fastener 100, and applies a circumferential thrust force to the protrusion 116 by the mating tooth 231, thereby making the fastener 10 0 Synchronous rotation with the driving member 200 <= After a period of use, due to the wear during the use of the 'tooth 231 and the protrusion 116 outside the contour size is reduced', the mating tooth 231 is separated from the protrusion 116, at this time, cooperate The abutting side surface 231 5 of the tooth 231 directly applies a circumferential thrust to the side wall 1141 of the protruding tooth 114, thereby driving the fastener 1 to rotate. When the fastener 300 is used to form the fastener 1 , the cylindrical head portion 11 is punched by a punch to form the fitting groove 113 of the head portion 11. Because the mating teeth 231 of the driving member 200 first cooperate with the protrusions 116 of the fastener 100, 099143123 Form No. A0101 Page 7 / Total 19 Pages 0992074698-0 201224302 'When there is a large wear between each other, it is matched with the convex teeth 114 Therefore, compared with the previous fasteners and the driving parts, only one wear is allowed to occur, which can have a long service life and is not easy to fail. [0022] The abutting side surface 23 15 of the mating tooth 231 of the driving member 200 abuts against the side wall 1141 of the protruding tooth 114 in the engaging groove 11 3 of the fastener 100 to drive the fastener 1 〇〇 when rotating 'resisting the side surface 231 5 is in surface contact with the side wall 1141, and the contact surface coincides with the axis of the overdrive member 200 and the surface of the central axis of the fastener 1〇〇. Therefore, the driving angle between the side surface 2 31 5 and the side wall 1141, that is, the angle between the tangential line and the overcut line, is the twist, so the driving member 200 is in tangent to the side surface 2315 and the side wall 1141. The component F of the line direction is the largest, thereby transmitting the maximum torque and having a high driving efficiency. [0023] Since the resisting side surface 2 31 5 is in surface contact with the side wall 11 41 and the contact surface coincides with the axis of the overdrive member 200 and the axis of the fastener 1 ,, even if both are worn out It can be kept in face contact or at least keep the contact portion still in the plane of the axis of the drive member 200 and the axis of the fastener 1 ,, so that the maximum torque can always be transmitted. [0024] The width L1 of the groove 115 of the engaging groove 113 of the fastener 100 adjacent to the opening at the central axis of the head 11 in the circumferential direction is smaller than the width L2′ of the bottom wall 11 51 in the circumferential direction and the engaging teeth 231 of the driving member 200 The width C1 of the root portion in the circumferential direction is smaller than the width C2 of the end of the engaging tooth 231 in the circumferential direction, so that the fitting teeth 231 of the driving member 200 are not easily detached from the groove 115 of the engaging groove 113 of the fastener 1 , which is further improved. The reliability of the cooperation. [0025] The side wall 1141 of the protruding tooth 114 of the fastener 100 and the connecting wall 1143, the bottom wall 1151 of the groove 115 and the side wall 1141 and the protrusion 116 of the convex tooth 114 are both flat 099143123. Form No. A0101 Page 8 of 19 Page 0992074698-0 201224302 Sliding connection, 231 of the two pieces 2 配合 with the teeth 2 31 outside the side 2 311 and the mating teeth
21連接部位之應力集中， [0027] 0 [0028] [0029] 0 [0030] [0031] [0032] [0033] [0034] [0035] 213之外徑’可減小驅動部23與桿部 中’防止驅動部23與桿部21斷裂。 ’、所述本發明確已符合發明專利之要件，遂依法提 出專利f請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之申請專利範圍。舉凡熟悉本 案技藝之人士援依本發明之精神所作之等效修飾或變化 ，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1為本發明實施方式之緊固件及驅動件之立體圖。 圖2為圖1中緊固件及驅動奸是剖梘圖。 圖3為圖1中緊固件與驅動件配合之剖視圖。 圖4為圖1中驅動件端面示圖。 圖5為成型圖1中緊固件之衝子。 圖6為圖1中緊固件與驅動件配合之另一狀態之剖視圖。 【主要元件符號說明】 緊固件：100 頭部：11 099143123 表單編號A0101 第9頁/共〗9頁 0992074698-0 201224302 [0036] 連接部：13 [0037] 端面：111 [0038] 配合槽：11 3 [0039] 螺紋：131 [0040] 環形斜面：15 [0041] 凸齒：114 [0042] 凹槽：115 [0043] 凸起：116 [0044] 側壁：1141 [0045] 連接壁：1143 [0046] 底壁：1151 [0047] 驅動件：20 0 [0048] 桿部：21 [0049] 驅動部：23 [0050] 連接端部：211 [0051] 轴肩：21 3 [0052] 配合齒：231 [0053] 容納槽：233 [0054] 外側面：2311 099143123 表單編號A0101 第10頁/共19頁 0992074698-0 201224302 [0055]凹陷部：2313 [0056] 抵持側面：2 31 5 [0057] 衝子：300 [0058] 本體：31 [0059] 衝頭：33 [0060] 切削刃：3 31 [0061] 切削槽：333 [0062] 凹谷：3311 099143123 表單編號A0101 第11頁/共19頁 0992074698-0The stress concentration of the 21 connection portion is [0027] [0029] [0034] [0035] [0035] 213 of the outer diameter ' can reduce the driving portion 23 and the rod portion The 'preventing drive unit 23 and the rod portion 21 are broken. The invention described above has indeed met the requirements of the invention patent, and the patent is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a fastener and a driving member according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the fastener and the driving force of Figure 1. Figure 3 is a cross-sectional view of the fastener of Figure 1 mated with the drive member. Figure 4 is a side elevational view of the drive member of Figure 1. Figure 5 is a punch for molding the fastener of Figure 1. Figure 6 is a cross-sectional view showing another state in which the fastener of Figure 1 is engaged with a driving member. [Main component symbol description] Fastener: 100 Head: 11 099143123 Form No. A0101 Page 9 / Total 9 Page 0992074698-0 201224302 [0036] Connection: 13 [0037] End face: 111 [0038] Cooperating groove: 11 3 [0039] Thread: 131 [0040] Circular bevel: 15 [0041] Convex: 114 [0042] Groove: 115 [0043] Protrusion: 116 [0044] Sidewall: 1141 [0045] Connecting wall: 1143 [0046 ] Bottom wall: 1151 [0047] Drive member: 20 0 [0048] Rod: 21 [0049] Drive: 23 [0050] Connection end: 211 [0051] Shoulder: 21 3 [0052] Fitted teeth: 231 [0053] Holding groove: 233 [0054] Outer side: 2311 099143123 Form number A0101 Page 10 / Total 19 page 0992074698-0 201224302 [0055] Depression: 2313 [0056] Resisting side: 2 31 5 [0057] Sub: 300 [0058] Body: 31 [0059] Punch: 33 [0060] Cutting edge: 3 31 [0061] Cutting groove: 333 [0062] Groove: 3311 099143123 Form No. A0101 Page 11 of 19 0992074698 -0