1268997 九、發明說明： 【發明所屬之技術領域】 於:種螺1」特別是指一種具四角孔之 凹頭螺絲 【先前技術】 如圖1、2所示’公告第3528〇〇號「具四角孔之平面 纺頭螺絲」新型專利案’該螺絲i之設計是其頭部U上方 具有一比四角孔13對角線更大的圓形平面12。 然而’該四角孔之平面纺頭螺絲1在使用時，特別是 固鎖位置在-深孔處時，由於該㈣孔13位置被伸入的鎖 固工具（圖中未示出）遮擋而無法看見，且該頭部η之圓 形平面12是呈平面狀，無任何可以引導鎖&具置入該四 角 内以紅動螺絲1之設計。因此，操作者只能憑感覺 或將鎖，工具不停地在該螺絲1之頭部圓形平面η上移動 、找尋該四角孔13位置，此一動作不但使用不便，且當 找尋許久而仍未能固鎖時，將不限時間地拖延作業時間。 【發明内容】 因此本發明之目的，即在提供_種螺絲，特別是且 四角孔之凹頭螺絲’可用於引導鎖固工具容易且順利地導 X角孔中方便操作者使用。同時，在製造上較 省材料。 於是，本發明具四角孔 螺桿。該螺頭具有一頂部、 設於該頂部上之四角孔，及 之凹頭螺絲’包含^_螺頭及一 一反向於該頂部之底部、一凹 一呈凹陷狀之曲面。該曲面是 1268997 由頂部之外周緣與四角孔之孔緣相配合所界定出。而該螺 桿設於該螺頭之底部。 藉由該螺頭之曲面，使鎖固工具順沿該曲面，即可容 易且順利地滑入該四角孔内，而達到方便操作者使用之功 效。 【實施方式】 有關本發明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較佳實施例的詳細說明中，將可清 楚的呈現。在本發明被詳細描述之前，要注意的是，在以 下的說明中，類似的元件是以相同的編號來表示。 如圖3、4所不，本發明具四角孔之凹頭螺絲的第一較 佳實施例是包含一螺頭2及一螺桿3。 忒螺頭2具有一頂部21、一反向於該頂部2丨之底告丨 22 (顯示於圖4)、一凹設於該頂部21上之四角孔23，万 曲面24。該曲面24呈内凹弧面狀並由該頂部2丨之外眉 緣與4四角孔23之孔緣相配合所界定出。而該螺桿3是言; 於該螺頭2之底部22,藉由該螺頭2之曲面24,可用於弓 導鎖固工具4 (顯示於圖6)，使該鎖固工具4可以順沿驾 曲面24，谷易且順利地導入該四角孔内。 /圖5所不’本發明具四角孔之凹頭螺絲的成型方法 =用-沖具5配合-頭部成型模穴6而鍛壓成形，該沖 ^底部形成有—配合該螺頭2之四角孔23與曲面24之 =局部’當該沖具5頂抵該螺絲2之頂部21時，亦可迅 、將油液及氣體沿該曲面24擴 擴政而排出，不會有死角以封 1268997 住油液及氣體，減少生產出鎖固工具插設搖擺度大之螺絲 〇 如圖6所示，是應用本實施例於固鎖兩木塊7。當固鎖 位置是在一深孔内時，組裝時螺絲將逐漸旋入該深孔中， 但有時鎖固工具4跳脫須重新插設四角孔23時，或鎖合過 程須調整而退出螺絲時，雖然該螺頭2之四角孔23被鎖固 工具4遮住而無法看到其位置，由於該螺頭2之曲面24是 呈内凹弧面狀，只需將鎖固工具4伸入該深孔中並觸及該 螺頭2之頂部21，即可引導鎖固工具4順沿該曲面24而對 應置入該四角孔23中。因此，本實施例之螺絲在使用上， 可達到方便操作者使用之功效，並不需要操作者憑感覺並 不停地移動鎖固工具4，來找尋該四角孔23。 如圖7、8所示，本發明具四角孔之凹頭螺絲的第二較 佳實施例，大致上是該第一較佳實施例相同，其中不同之 處在於·該螺頭2之曲面24是由四傾斜平面241所組成， 每一傾斜平面241是連接該四角孔23之每一孔緣。本實施 例之螺絲在使用上，同樣可使鎖固工具4在觸及該螺頭2 之頂部21時，可受該曲面24之任一傾斜平面241的引導 而對應置入該四角孔23中。因此，本實施例之螺絲在使用 上，同樣可達到方便操作者使用之功效。 歸納上述，本發明具四角孔之凹頭螺絲，利用該螺頭2 之曲面24,使得鎖固工具4可以順沿該曲面^，容易且順 利地導入該四角孔23内，方便操作者使用。同時，在製造 上亦能較為節省材料且減少生產出有品質不佳的螺絲，故 1268997 確實能達到本發明之功效目的。 範圍及發明說明内交新从 口 斤作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 准、斤述者，僅為本發明之較佳實施例而已，當不 ϋ-i—I it—色之f圍’即大凡依本發明申請專利 圖1是一習知螺絲之侧視剖面圖； 圖2是一習知螺絲之俯視圖； 圖 態樣；1268997 IX. Description of the invention: [Technical field of invention]: "Spiral screw 1" especially refers to a socket head screw with four corner holes [Prior Art] As shown in Figure 1, 2, 'Announcement No. 3528 「 The new patent of the square-corner screw of the four-corner hole is designed such that the screw i has a circular plane 12 above the head U which is larger than the diagonal of the four-corner hole 13. However, when the flat-head screw 1 of the four-corner hole is in use, especially when the locking position is at the deep hole, the position of the (four) hole 13 is blocked by the locking tool (not shown) that protrudes into it. Seen, and the circular plane 12 of the head η is planar, without any design that can guide the lock & with the red screw 1 inserted into the four corners. Therefore, the operator can only move on the circular plane η of the head of the screw 1 by the feeling or the lock, and find the position of the square hole 13 , which is not only inconvenient to use, but also looks for a long time. When the lock is not fixed, the working time will be delayed for an unlimited amount of time. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a screw, particularly a four-corner socket head screw, that can be used to guide the locking tool easily and smoothly in the X-hole for ease of use by the operator. At the same time, it is more economical to manufacture. Thus, the present invention has a four-corner screw. The screw head has a top, a four-corner hole disposed on the top portion, and the socket head screw ' includes a screw head and a curved surface which is opposite to the bottom of the top portion and has a concave shape and a concave shape. The surface is 1268997 defined by the outer edge of the top and the edge of the corner hole. The screw is disposed at the bottom of the screw head. By the curved surface of the screw head, the locking tool can be smoothly and smoothly slid into the four-corner hole along the curved surface, thereby achieving the convenience of the operator. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of FIG. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. As shown in Figs. 3 and 4, a first preferred embodiment of the socket head screw having a four-corner hole according to the present invention comprises a screw head 2 and a screw 3. The boring head 2 has a top portion 21, a bottom warning 22 opposite the top portion 2 (shown in Fig. 4), a square hole 23 recessed in the top portion 21, and a curved surface 24. The curved surface 24 is concavely curved and defined by the edge of the top 2 眉 and the edge of the 4 square hole 23 . And the screw 3 is at the bottom 22 of the screw head 2, by the curved surface 24 of the screw head 2, can be used for the bow guide locking tool 4 (shown in Figure 6), so that the locking tool 4 can be along the edge Driving the curved surface 24, the valley is easily and smoothly introduced into the four corner holes. / Figure 5 is not the method of forming the socket head screw of the present invention = forging with the punching tool 5 - the head molding cavity 6 is formed, and the bottom portion of the punch is formed with the four corners of the screw head 2 The hole 23 and the curved surface 24 = partial 'When the punch 5 abuts against the top 21 of the screw 2, the oil and gas can be quickly expanded along the curved surface 24, and there is no dead angle to seal 1268997 In the case of oil and gas, the screw that has a large swinging degree is produced by inserting the locking tool. As shown in Fig. 6, the two blocks 7 are fixed by the application of the present embodiment. When the locking position is in a deep hole, the screw will gradually screw into the deep hole during assembly, but sometimes the locking tool 4 must be re-inserted into the corner hole 23 when the locking tool 4 is tripped, or the locking process must be adjusted to exit In the case of the screw, although the four corner holes 23 of the screw head 2 are hidden by the locking tool 4 and the position cannot be seen, since the curved surface 24 of the screw head 2 is concavely curved, it is only necessary to extend the locking tool 4 Into the deep hole and touching the top 21 of the screw head 2, the locking tool 4 is guided along the curved surface 24 and correspondingly inserted into the four-corner hole 23. Therefore, the screw of the embodiment can achieve the effect of being convenient for the operator in use, and does not require the operator to move the locking tool 4 by feeling and continuously to find the four-corner hole 23. As shown in Figures 7 and 8, the second preferred embodiment of the four-hole recessed head screw of the present invention is substantially the same as the first preferred embodiment, wherein the difference is that the curved surface 24 of the screw head 2 It is composed of four inclined planes 241, and each inclined plane 241 is connected to each of the corner edges of the four corner holes 23. In the use of the screw of this embodiment, the locking tool 4 can also be inserted into the four-corner hole 23 by the guiding of any inclined plane 241 of the curved surface 24 when it touches the top portion 21 of the screw head 2. Therefore, the screw of the embodiment can also achieve the effect of being convenient for the operator in use. In summary, the present invention has a four-corner socket head screw, and the curved surface 24 of the screw head 2 allows the locking tool 4 to be easily and smoothly introduced into the four-corner hole 23 along the curved surface for the convenience of the operator. At the same time, it is also possible to save material and reduce the production of screws of poor quality in manufacturing, so 1268997 can indeed achieve the purpose of the invention. Scope and Description of the Invention The simple equivalent changes and modifications made by the internals of the invention are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The present invention is only a preferred embodiment of the present invention, and is not known as a preferred embodiment of the present invention. Figure 2 is a side view of a screw; Figure 2 is a top view of a conventional screw;
說明本發明之一第一較佳實施例之 圖4是該第一實施例之一侧視圖； 圖5疋一側視不意圖，說明該第一較佳實施例之成型 加工態樣； 圖6是一侧視示意圖，說明透過一鎖固工具將該第一 較佳實施例固鎖兩木塊之組裝態樣； 圖7是一立體圖，說明本發明之一第二較佳實施例之 態樣；及 圖8是該第二實施例之一側視圖。 1268997 【主要元件符號說明】 2 ·… 螺頭 3 · · •螺桿 21…· 頂部 4 · · •鎖固工具 22· · * 底部 5 … •沖具 23* · · 四角孔 6 * · •頭部成型模穴 24— * 曲面 7 · · • 木塊 241 · * 傾斜平面FIG. 4 is a side view of the first embodiment of the present invention; FIG. 5 is a side view of the first preferred embodiment; FIG. Figure 1 is a perspective view showing the second preferred embodiment of the present invention. Figure 7 is a perspective view showing the second preferred embodiment of the present invention. And Figure 8 is a side view of the second embodiment. 1268997 [Description of main component symbols] 2 ·... Screw head 3 · · • Screw 21...· Top 4 · · • Locking tool 22 · · * Bottom 5 ... • Punch 23* · · Square hole 6 * · • Head Molding cavity 24—* Surface 7 · · • Block 241 · * Inclined plane