M359605 八、新型說明： 【新型所屬之技術領域】 本新型是有關於一種螺絲’特別是指一種螺柱與螺絲 頭間具有高結合強度的螺絲。 【先前技術】 一般的螺絲在拆卸下來之後，由於體積报小，常會遺 失，因此一種如圖1、圖2及圖3所示的改良螺絲7，可有 效防止此一現象，該螺絲7包含一螺絲頭7丨、—螺柱72、 一管體73及一彈# 74。螺絲頭71呈套筒狀並具有一開口 7U，螺絲頭7丨鄰近開口 711的部分形成束縮的摺邊712, 螺絲頭7丨内部設有-凹槽713且外表面設有複數齒條714 。螺柱72 —端形成對應插置於凹槽713的固定部，另 一端形成-具有螺紋的螺身722，固定部721外:面設有複 數齒條724。管體73滑動地套設於螺絲頭71内部斑螺身 似之間，管體73 -端形成—外凸緣731，另—端的内表 面形成-内階732且外表面形成_凹環733，外凸緣731供 與摺邊m内表面抵頂。彈簧74套設於螺身722周圍與該 管體73之間，且兩端分別抵頂於内階732及螺絲頭η鄰 近凹槽713的内表面。 螺絲7可在一如圖2所示之非螺鎖位置及一如圖3所 示之螺鎖位置間變換，在該非螺 系鎖位置時，彈簧74將管體 73朝返離螺絲頭71的方向外 .799 , 推亚使管體73包覆遮蔽螺 身722’此時螺絲7可利用其管體73 於一第-物件8的-穿孔81 衣733預先卡固 L見圖2)内，而當要利用該 M359605 螺絲7將該第一物件8與— '第一物件9(見圖3)螺鎖連接 時，即可透過壓下螺絲頭 營俨73 -罢… 使。亥彈簧74產生壓縮，使該 g體73合置入该螺絲頭7】 .. B 並使螺身722相對突伸出 官體73外，即變換至該螺鎖位置，以提供螺鎖功能。 上述螺絲7是將固定部721塞入凹槽π 固定部721外表面的複數齒 ^ 做双w條724卡固於凹槽713，容 生固定部721與螺絲頭71 ^ W U價713之間結合強度不足而 相互脫離的狀況，則無法透過施力於螺絲頭η將螺身⑵ 鎖入第二物件9，有進一步改善的空間。 【新型内容】 因此’本新型之目的，即在提供一 具有南結合強度的螺絲。 種螺柱與螺絲頭 間 本新型之另一目的，在於接供一德&人 牡仏捉仏種利用鉚合的方式使 螺柱與螺絲頭穩固結合的螺絲。M359605 VIII. New description: [New technical field] The new type is related to a kind of screw', especially a screw with high bonding strength between the stud and the screw head. [Prior Art] After the general screw is disassembled, it is often lost due to the small volume. Therefore, an improved screw 7 as shown in Fig. 1, Fig. 2 and Fig. 3 can effectively prevent this phenomenon. The screw 7 includes a The screw head 7丨, the stud 72, a tube body 73 and a bullet #74. The screw head 71 has a sleeve shape and has an opening 7U. The screw head 7丨 is adjacent to the opening 711 to form a bundled flange 712. The screw head 7 is internally provided with a groove 713 and the outer surface is provided with a plurality of racks 714. . The stud 72 has a fixed end portion that is inserted into the recess 713, and the other end forms a threaded body 722. The outer portion of the fixing portion 721 is provided with a plurality of racks 724. The tube body 73 is slidably sleeved between the screw bodies of the screw head 71, the tube body 73-end forms an outer flange 731, the inner surface of the other end forms an inner step 732 and the outer surface forms a concave ring 733. The outer flange 731 is provided to abut against the inner surface of the flange m. The spring 74 is sleeved around the screw body 722 and the tube body 73, and the two ends are respectively abutted against the inner step 732 and the screw head n adjacent to the inner surface of the groove 713. The screw 7 can be changed between a non-threaded position as shown in FIG. 2 and a screw lock position as shown in FIG. 3. In the non-spiral lock position, the spring 74 biases the tube 73 away from the screw head 71. In the direction of .799, the pusher causes the tube body 73 to cover the shielding screw body 722'. At this time, the screw 7 can be pre-locked by the tube body 73 on the first object-piece 8 - the perforation 81 garment 733 (see Fig. 2). When the first object 8 is to be screwed with the first object 9 (see Fig. 3) by means of the M359605 screw 7, it can be pressed through the screw head 73. The spring 74 is compressed so that the g body 73 is inserted into the screw head 7 . . . B and the screw body 722 is relatively protruded out of the body 73, that is, to the screw position to provide a screw lock function. The screw 7 is a plurality of teeth 724 which are inserted into the outer surface of the fixing portion 721 of the recess π. The double w strip 724 is fastened to the recess 713, and the fixed fixing portion 721 is coupled with the screw head 71. In the case where the strength is insufficient and they are separated from each other, the screw body (2) cannot be locked into the second object 9 by applying a force to the screw head η, and there is room for further improvement. [New content] Therefore, the purpose of the present invention is to provide a screw having a south joint strength. Between the studs and the screw heads Another object of the present invention is to provide a screw for the solid combination of the stud and the screw head by means of riveting for a German & oyster.
於疋’本新型包含一螺絲頭、一螺柱及一蓋體。該螺 絲頭包括一軸向地形成於該螺絲頭内部的穿孔，該穿孔具 有一限位段及一容置段，該限位段與容置段之間界定出一 第一肩部；該螺柱穿設於該穿孔，並包括一至少部分突伸 出該容置段的本體，及一容置於該限位段中的限位體，該 本體表面設有螺紋’該限位體抵頂於該第一肩部而限位； 该蓋體’固疋封蓋於该限位段並限制該螺柱的限位體脫離 該限位段。 進一步地，該穿孔的容置段具有一鄰近該限位段且與 該限位段界定出該第一肩部的束縮部，及一相對遠離該限 M359605 位段的擴大部；該螺絲更包含一可滑移地且至少部分容置 於該擴大部内並套設於該螺柱外的套筒。 較佳地，該套筒遠離該束縮部的一端外表面設有一凹 環槽。 另外，該穿孔的容置段更具有—位於該擴大部遠離該 束縮部之端緣且直徑小於該擴大部的縮口部；該套筒包括 一圍繞壁，及一在該圍繞壁之較鄰近該穿孔之束縮部的端Yu Yu's new type includes a screw head, a stud and a cover. The screw head includes a through hole formed in the interior of the screw head, the through hole has a limiting portion and a receiving portion, and the first shoulder portion is defined between the limiting portion and the receiving portion; the screw The post is disposed on the through hole, and includes a body at least partially protruding from the receiving portion, and a limiting body received in the limiting portion, the body surface is provided with a thread 'the limiting body is abutted Restricting the first shoulder portion; the cover body is fixedly closed to the limiting portion and restricting the limiting body of the stud from the limiting portion. Further, the perforated receiving section has a constricted portion adjacent to the limiting segment and defining the first shoulder with the limiting segment, and an enlarged portion relatively far from the limit M359605; the screw is further A sleeve is provided that is slidably and at least partially received within the enlarged portion and sleeved outside the stud. Preferably, the sleeve is provided with a recessed groove away from an outer surface of one end of the bundle. In addition, the accommodating section of the perforation further has a venting portion located at an edge of the enlarged portion away from the end of the condensing portion and having a smaller diameter than the enlarged portion; the sleeve includes a surrounding wall, and a surrounding wall Adjacent to the end of the bundle of perforations
緣徑向朝外突伸的凸緣’該凸緣可卡抵於該縮口部而限制 該套筒脫離該螺絲頭。 更進一步地，該束縮部的直徑是小於該擴大部直徑， 且該束縮部與擴大部界以―第二肩冑’該套筒更包括一 在該圍繞壁之較遠離該穿孔之束縮部的端緣徑向朝内突伸 的擔緣；該螺絲更包含—設於該本體與套筒之間的壓縮彈 力件’該壓縮彈力件兩端分別頂抵於該第二肩部及該套筒 的擋緣，恆產生一彈力將該套筒外推。A flange that protrudes radially outwardly. The flange is snapped against the constricted portion to restrict the sleeve from disengaging the screw head. Further, the diameter of the constricted portion is smaller than the diameter of the enlarged portion, and the constricted portion and the enlarged portion are defined by a "second shoulder". The sleeve further includes a bundle at the surrounding wall that is farther away from the perforated portion. The end edge of the constricted portion protrudes radially inwardly; the screw further includes a compression elastic member disposed between the body and the sleeve, and the two ends of the compression elastic member respectively abut against the second shoulder portion The retaining edge of the sleeve constantly produces an elastic force to push the sleeve outward.
有關該蓋體固定封蓋於該限位段的方式 黏合或卡合等方式。 可以是鉚合 ^ 丨通衣面形成用以對該 螺4頭谷置段的周壁產生干涉固^的複數會條。 上述該螺絲頭外表面可設有增 的趨數音播女 啕曰加螺鎖知作時之摩擦力 複數齒槽，亦可在該蓋體遠離該 槽，供一螺絲起子抵入以旋轉螺鎖。 ^中央-凹 本新型藉由該限位體抵頂於該 體朝容置段方向脫離螺# ^肩°卩，防止該限位 離螺絲頭，更配合將該蓋體以鉚合方式 M359605 固定封蓋於該限位段，限制該限位體朝遠離容置段方向脫 離螺絲頭，提高螺柱與螺絲頭間結合強度。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之二個較佳實施例的詳細說明中將可 清楚地呈現。 圖4所示為本新型螺絲的第一較佳實施例，該螺絲_ 包含一螺絲頭卜一螺柱2及一蓋體3。同時參閱圖4、圖 5，該螺絲頭1包括-轴向貫穿形成的穿孔⑴且螺絲頭丄 外表面設有增加手轉螺鎖操作時之摩擦力的複數齒槽 該穿孔u具有一限位段U1及一容置段112，該限位曰段⑴ 與容置段112之間界定出一第一肩部13。 同時參閱圖5、圖6，螺柱2穿設於穿孔u，並包括一 至少部分突伸出容置段112中的本體21，及—容置二限位 段中的限位體22,該限位體22抵頂於第—肩部13而限位 二本體21鄰近限位體22的端部表面形成用以對螺絲頭】 容置段112的周壁產生干涉固定的複數齒條23，而遠離該 等齒條23的端部表面設有螺紋24。 同時參_ 6、圖7，蓋體3以鉚合方式固定封蓋於限 位段m ’且與螺絲頭}限位段ln的㈣及螺柱2的限位 體22緊配合地相互固定，藉此限制螺柱2的 離限位段111。 凹 0匕甘麥閲圖4，該蓋 槽3卜凹槽31㈣可以是—字形或十字形，使該《 M359605 _除了可直接以手轉螺鎖外，亦可藉由—螺絲料抵入該 凹槽31而旋轉螺鎖°另外’不同尺寸規格螺絲刚的螺: Z \或蓋體3/在製造成形時，針對尺寸大何同而進;; 佈識別用色彩’以供依靠視覺辨視色彩而判斷其尺寸規 格。 再同時參_ 5、圖6及圖7，本實施例的组合步驟是 先由螺絲頭！的限位段⑴側將螺柱2穿設入穿孔i卜使 限位體22抵頂於第一肩部…而本體21設有螺紋以的部 分恰好外露於該螺絲頭^的容置段112，其次再由螺絲頭i 的限位段111側將蓋體3鉚入該限位段m +，使蓋體3與 螺絲碩丄限位段111的周壁及螺柱2的限位體22緊配合地 相互固疋，便組合完成，如此一來’不論螺絲100受力方 "為可（參考圖7中二箭頭方向），由於限位體22抵頂於 第肩°P 13，且被蓋體3牢牢固定於限位段111内，便不 會有螺柱2與螺絲頭1相互脫離的狀況。 圖8所示為本新型螺絲的第二較佳實施例，該螺絲200 包含一螺絲頭1’、_螺柱2,、一蓋體3，、一套筒4及一壓 縮彈力件5。 、同牯參閱圖8、圖9，該螺絲頭1，包括-轴向貫穿形成 的牙孔11且外表面設有增加手轉螺鎖操作時之摩擦力的 複數齒槽12 ’該穿孔U’具有-限位段111，及一容置段 112 °亥穿孔U’的容置段112,由鄰近該限位段111，朝遠離 。亥限位奴111依序形成一束縮部113，、一擴大部114,及一 縮》卩115擴大部114’直徑大於該束縮部113,及縮口部 9 M359605 115’的直徑，限位段111’與束縮部113，界定出一第一肩部 13 ，該束縮部113’與擴大部114’界定出一第二肩部 螺柱2’穿設於該穿孔U，，並包括一至少部分突伸出該 谷置段112’的本體21’’及一容置於該限位段m’中的限饵 體22，該限位體22,抵頂於第一肩部丨3，而限位，該本體 21鄰近限位體22 ’的端部表面形成用以對該螺絲頭丨，束縮 部113’的周壁產生干涉固定的複數齒條23，，而遠離該等 齒條23的端部表面設有螺紋24,。 蓋體3 ’以鉚合方式固定封蓋於該限位段丨丨丨，，且與螺 絲頭1’限位段m，的周壁及螺柱2，的限位體22，緊配合地相 互固定，藉此限制螺柱2,的限位體22,脫離該限位段m，。 另外，該蓋體3,遠離該螺柱2,的一側中央亦可設有一凹槽 31’ 形狀可以是—字形或十字形，供—螺絲起^ 抵入以旋轉螺鎖。有關該蓋體3,固定封蓋於該限位段lu， 的方式，除了上述的鉚合方式外，亦可以是黏合 合方式等。 該套筒4可滑移地至少部分容置於螺絲頭丨，之擴大部 114’内且套設於螺柱2,的本體21，外’並包括_圍繞壁μ: -在圍繞壁41之較鄰近束縮部113,的端緣徑向朝外突伸的 凸緣43，-在圍繞壁41之較遠離束縮部113’的端緣徑向朝 内突伸的擋緣44,及-設在鄰近擋緣44的圍繞壁4ι外表 面上的凹環槽45，該凸緣43可卡抵於該縮^ ^，而 該套筒4脫離螺絲頭1，。 壓縮彈力件5是穿設於螺柱2，的本體21，與套筒4之間 10 M359605 祕壓縮彈力件5兩端分別頂抵於該第二肩部Η， 緣44，藉此恆提供該套筒4 —遠離 4的擋 通離螺絲碩1，的彈性 同時參閱圖9、圖10、圖力。 200沾太# 及圖12 ’本實施例螺絲 :套…相對該螺絲頭i，在一非螺鎖位置（圖 ;字與7_ (圖1〇、圖⑴間變換，在該非螺鎖位 由簡彈力件5如上所述值將套筒4外推，使該 套同4包覆遮蔽該螺柱2，的蟬 ^ 此時可利用套筒4的 讀45預先卡固於一欲螺鎖的物件（圖未示）上. 將該物件螺鎖至另一物件上（圖未示）時，即可透過二 螺絲頭Γ使廢縮彈力件5產生壓縮，此時套筒4滑移靠近 第二肩部…當該套筒4的凸緣43抵靠於第二肩部"，時 ’即變換至該螺鎖位置’此時螺柱2’的本體21，部分相對突 伸出該套筒4外，以提供螺鎖功能。 綜上所述，本新型螺絲1〇〇、2〇〇藉由以限位體U、 22’抵頂於第-肩部13、13,，確保螺柱2、2,之限位體 22谷置於限位段U1、lu，内，且防止限位體22、^，朝容 置段112、112’方向脫離螺絲頭1、1，，更配合該本體21、 21的複數齒條23、23,對該螺絲頭1、丨，的容置段112、 112’的周壁產生干涉來加強固定；另外，將蓋體3、3，以柳 合方式固定封蓋於該限位段1U、m，，限制限位體22、 22’朝遠離容置段112、112，方向脫離螺絲頭】、丄，，故能確 實達成本新型之目的。 惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 11 M359605 範圍及新型說明内容所作之簡單的#效變化與修佛，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一立體分解圖，說明一習知的螺絲； 圖2是圖1中該螺絲在一非螺鎖位置的剖面示意圖； 圖3是圖1中該螺絲在一螺鎖位置的剖面示意圖； 圖4是一立體圖，說明本新型螺絲的第一較佳實施例 頭的穿籲 圖5是第一較佳實施例中一螺柱穿設入一螺絲 孔之剖面示意圖； 圖6是第一較佳實施例中一蓋體柳合入一螺絲 孔之剖面示意圖； 牙 圖 圖 施例； 7是第-較佳實施例的組合完成之剖面示意圖； 8是-立體分解圖’說明本新型螺絲的第二較佳實 圖9是圖8中該螺絲在一非螺鎖位置的剖面示音圖. 圖10是圖8中該螺絲在-螺鎖位置的剖面示意Γ圖；’ 圖11是圖9的立體示意圖；及 圖12是圖10的立體示意圖。 12 M359605 【主要元件符號說明】 100、200 ·螺絲 1、 Γ.......螺絲頭 11、 11’……穿孔 12、 12’ —齒槽 111、 11 Γ ·限位段 112、 112’容置段 113’.........束縮部 114’.........擴大部 115’.........縮口部 13、 13’ —第一肩部 14’..........第二肩部 2、 2’.......螺柱 21、21’····本體 22、 22,….P艮位體 23、 23，.…齒條 24、 24，····螺紋 3、3’.......蓋體 31、31’ —凹槽 4 .............套筒 41 ...........圍繞壁 43 ...........凸緣 44 ...........擋緣 45 ...........凹環槽 5 .............壓縮彈力件 13The manner in which the cover is fixedly attached to the limit portion is adhered or engaged. It may be a riveting ^ 丨 through-face forming a plurality of bars for interfering with the peripheral wall of the four-column section of the snail. The outer surface of the screw head may be provided with a plurality of friction grooves of the increasing number of sounds, the female scorpion and the screw lock, and the cover body may be away from the groove for a screw driver to rotate. lock. ^The central-concave type is separated from the screw by the support body in the direction of the body toward the accommodating section, preventing the limit from being away from the screw head, and more closely fitting the cover body to the riveting manner M359605 Covering the limiting section, the limiting body is restricted from being away from the screw head in a direction away from the receiving section, thereby improving the bonding strength between the stud and the screw head. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. FIG. 4 shows a first preferred embodiment of the present invention. The screw _ includes a screw head 2 and a cover 3. Referring to FIG. 4 and FIG. 5, the screw head 1 includes a through hole (1) formed through the axial direction, and the outer surface of the screw head is provided with a plurality of slots which increase the friction force during the operation of the hand screw. The hole u has a limit. A segment U1 and a receiving segment 112 define a first shoulder 13 between the limiting segment (1) and the receiving segment 112. Referring to FIG. 5 and FIG. 6 , the stud 2 is disposed through the through hole u and includes a body 21 at least partially protruding from the receiving portion 112 , and a limiting body 22 in the second limiting portion. The limiting body 22 abuts against the first shoulder portion 13 and the end surface of the limiting body 2 adjacent to the limiting body 22 forms a plurality of racks 23 for interference fixing of the peripheral wall of the screw head receiving portion 112, and The end surface away from the racks 23 is provided with threads 24. At the same time, the cover body 3 is fixedly capped to the limit segment m' by means of riveting, and is fixed to each other by the (4) of the screw head} limit segment ln and the limiting body 22 of the stud 2, Thereby the limit stop section 111 of the stud 2 is restricted. According to FIG. 4, the groove 31 (4) of the cover groove 3 may be a letter shape or a cross shape, so that the M359605 _ can be directly screwed into the screw by the hand screw, The groove 31 rotates the screw lock. In addition, the screws of the different size screws are: Z \ or the cover body 3 / when manufacturing is formed, the size is different; the cloth identification color is used for visual recognition Judging its size and color. At the same time, referring to _ 5, Fig. 6 and Fig. 7, the combination step of this embodiment is first by the screw head! On the side of the limiting section (1), the stud 2 is inserted into the through hole, so that the limiting body 22 abuts against the first shoulder. The portion of the body 21 provided with the thread is just exposed to the receiving section 112 of the screw head ^ Then, the cover body 3 is riveted into the limit segment m + by the limit segment 111 side of the screw head i, so that the cover body 3 and the peripheral wall of the screw limit section 111 and the limit body 22 of the stud 2 are tight. Cooperate with each other, the combination is completed, so that 'regardless of the force of the screw 100' (refer to the direction of the two arrows in Figure 7), because the limiter 22 is placed against the shoulder of the shoulder °P 13, and The cover body 3 is firmly fixed in the limiting portion 111, so that the stud 2 and the screw head 1 are not separated from each other. A second preferred embodiment of the present invention is shown in Fig. 8. The screw 200 includes a screw head 1', a stud 2, a cover 3, a sleeve 4, and a compression spring member 5. Referring to FIG. 8 and FIG. 9, the screw head 1 includes an axial hole 11 formed through the axial direction and a plurality of teeth 12 on the outer surface for increasing the frictional force during the operation of the hand screw operation. The accommodating section 112 having the - limiting section 111 and the accommodating section 112 ° Having a through hole U' is adjacent to the limiting section 111 and facing away. The sea limit slave 111 sequentially forms a bundle of constrictions 113, an enlarged portion 114, and a diameter of the enlarged portion 114' is larger than the diameter of the bundle portion 113, and the diameter of the neck portion 9 M359605 115'. The first segment 13 is defined by the segment 111' and the constricted portion 113. The constricted portion 113' and the enlarged portion 114' define a second shoulder stud 2' extending through the through hole U, and The body includes a body 21'' at least partially protruding from the valley portion 112' and a limiting lure body 22 received in the limiting portion m'. The limiting body 22 abuts against the first shoulder 丨3, and the limit, the end surface of the body 21 adjacent to the limiting body 22' forms a plurality of racks 23 for interferingly fixing the peripheral wall of the screw head portion 113', and away from the teeth The end surface of the strip 23 is provided with a thread 24,. The cover body 3' is fixedly capped to the limiting section 以 by means of riveting, and is fixed to the peripheral wall of the screw head 1' limiting section m, and the limiting body 22 of the stud 2, and is tightly fitted to each other. Thereby, the limiting body 22 of the stud 2 is restrained from the limiting segment m. In addition, the cover body 3 may be provided with a recess 31' in the center of the side away from the stud 2, and may be in the shape of a letter or a cross for the screw to be rotated to rotate the screw. The cover 3 may be fixedly attached to the stopper portion lu, and may be an adhesive joint or the like in addition to the above-described caulking method. The sleeve 4 is slidably at least partially received in the screw head 丨, the enlarged portion 114' and sleeved on the body 2 of the stud 2, and externally includes and surrounds the wall μ: a flange 43 that protrudes radially outward from an end edge of the constricted portion 113, a retaining edge 44 that projects radially inwardly from an end edge of the wall 41 that is further away from the end portion 113', and A recessed ring groove 45 is provided adjacent the outer edge of the retaining edge 44 around the wall 4, the flange 43 is snapped against the shrinkage, and the sleeve 4 is disengaged from the screw head 1. The compression elastic member 5 is disposed on the body 21 of the stud 2, and the two ends of the 10 M359605 secret compression elastic member 5 are respectively abutted against the second shoulder portion, the edge 44, thereby providing the same The elasticity of the sleeve 4 - the distance away from 4 is away from the screw 1, and the force is also referred to FIG. 9, FIG. 10 and FIG. 200沾太# and Figure 12 'This embodiment screw: sleeve... relative to the screw head i, in a non-spiral position (figure; word and 7_ (Fig. 1〇, Fig. (1)), in the non-spiral lock position The elastic member 5 pushes the sleeve 4 outward as described above, so that the sleeve 4 covers the stud 2, and the 蝉^ can be pre-locked to the object to be screwed by the reading 45 of the sleeve 4. (not shown). When the object is screwed onto another object (not shown), the scraping elastic member 5 can be compressed by the two screw heads, and the sleeve 4 slides closer to the second. Shoulder... when the flange 43 of the sleeve 4 abuts against the second shoulder, it changes to the screw position. At this time, the body 21 of the stud 2' protrudes partially from the sleeve. 4, in order to provide the screw lock function. In summary, the new type of screw 1〇〇, 2〇〇 by the limit body U, 22' against the first shoulder 13, 13, to ensure the stud 2 2, the limit body 22 is placed in the limit segment U1, lu, and prevents the limit body 22, ^ from the direction of the receiving portion 112, 112' from the screw head 1, 1, more compatible with the body 21, 21 of the plurality of racks 23, 23, the snail The peripheral walls of the accommodating sections 112, 112' of the head 1, 丨, interfere with each other to strengthen the fixing; in addition, the cover bodies 3, 3 are fixedly capped to the limiting section 1U, m by the splicing manner, and the limit is limited. The body 22, 22' is away from the accommodating sections 112, 112, and is separated from the screw head, 丄, so that the purpose of the present invention can be achieved. However, the above is only the preferred embodiment of the present invention. The scope of this new implementation cannot be limited by this, that is, the simple #effect change and the cultivation of the Buddha according to the scope of the new application patent 11 M359605 and the new description are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a conventional screw; FIG. 2 is a cross-sectional view of the screw of FIG. 1 in a non-threaded position; FIG. 3 is a cross-sectional view of the screw in a screw lock position of FIG. FIG. 4 is a perspective view showing the first preferred embodiment of the present invention. FIG. 5 is a cross-sectional view showing a screw hole inserted into a screw hole in the first preferred embodiment; FIG. In a preferred embodiment, a cover body is inserted into a screw FIG. 7 is a cross-sectional view of the combination of the first preferred embodiment; 8 is a three-dimensional exploded view illustrating the second preferred embodiment of the present invention. FIG. FIG. 10 is a schematic cross-sectional view of the screw in the screw-locked position of FIG. 8; FIG. 11 is a perspective view of FIG. 9; and FIG. 12 is a perspective view of FIG. 12 M359605 [Description of main component symbols] 100, 200 · Screw 1, Γ....... Screw head 11, 11'... Perforation 12, 12' - Slots 111, 11 Γ · Limit section 112, 112' accommodating section 113'.........shrinking portion 114'...the enlarged portion 115'...the narrowing portion 13, 13' - first shoulder 14'..........second shoulder 2, 2'....... stud 21, 21'...body body 22, 22,....P Clamping bodies 23, 23, .... racks 24, 24, ... 3, 3'.... cover bodies 31, 31' - grooves 4 ......... .... sleeve 41 ........... around the wall 43 ........... flange 44 ........... retaining edge 45 . .......... concave ring groove 5 .......... compression elastic member 13