1276449 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種高爾夫球頭，特別是指一種低重 心化高爾夫球頭。 【先前技術】 以同爾夫球;^干頭的配重設計來說，主要影響擊球時之 球桿頭移動平衡感與側旋效應，以及球受擊後的飛行狀態 重^配置偏冋者’所擊出球的飛行彈道低且後旋量大， 相當難以擊出高飛球，故較適用於打擊力強的使用者；相 反地’重心配置偏低偏後者，便利於讓球以高飛行彈道且 低後旋量之條件飛擊出，相對較適於打擊力弱之使用者或 初學者。另外，若重心配置過於接近打擊面，會造成擊球 時高爾夫球桿頭產生嚴重側旋與偏移扭轉，而無法平衡擺 動0 a m _ 賴❺爾夫球桿頭的配重設計方式相當多，除1276449 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a golf club head, and more particularly to a low center of gravity golf club head. [Prior Art] In the design of the weight of the ball; the weight of the head is mainly affected by the movement balance and side-spinning effect of the club head when hitting the ball, and the flight state after the ball is hit. The flying ballistics of the hitting ball are low and the amount of rear spin is large, which is quite difficult to hit the high flying ball. Therefore, it is more suitable for users with strong impact force; on the contrary, the center of gravity is lower than the latter, which is convenient for the ball to be high. The condition of flying trajectory and low back spin is flying, which is relatively suitable for users or beginners with weak impact. In addition, if the center of gravity is placed too close to the face, it will cause serious side rotation and offset torsion of the golf club head when hitting the ball, and it is impossible to balance the swing 0 am _ The weight of the Lai'erve club head is designed quite a lot. except
了將配重物件嵌置或鎖入 a 只王骽中以外，最基本的便 疋/專化球頭主體的頂部或侧部結構厚度，“，不同的製 造工法會分別衍生出不同的問題： 1·鑄造成型者： 利用精密鑄造方式成型出薄殼 結構厚度仍於0.6毫米以上，球神㈣/主體所付 】8〜9”古… J衣碩整體重心高度位置為 2耄米範圍内，故重心調降成 j巧风效不佳。若是進一步 予以研磨加工至厚度約〇.2〜〇 5毫 均厚、鑄件強声不足Η 未則極易產生研磨不 強度不足、產生凹陷變形，以及擊球響聲沉 1276449 重等問題。 2·硬焊結合者： 另外製作成型出厚度為0.55毫米以上的金屬薄板（ 如頂蓋部分），經由硬焊方式予以組裝成完整球頭主體者 ，不僅金屬薄板的抗壓性與抗衝擊性皆不足，而容易因 衝擊碰撞而變形，且其結構剛性較差，於打擊聲響上較 低沉而不清脆，特別是，硬焊過程中必須填入比重較高 的焊料，反而會使整體重心增高，使球頭整體重心高度 位置仍偏高而約為18〜212毫米範圍處。 【發明内容】 因此，本發明之目的，即在提供一種低重心設計，而 能有效提昇擊球穩定性的低重心化高爾夫球頭。 於是，本發明之低重心化高爾夫球頭，包含一中空的 球頭主體、一金屬製的薄板，以及一抗壓内板。該球頭主 體具有一開槽。該薄板是接合設置於該球頭主體之開槽中 ，且其厚度界於0.1〜0.5毫米。該抗壓内板是位於該球頭主 體中且膠合固定於該薄板内面。 本發明之功效在於利用接合於該球頭主體上且厚度界 於0.1〜〇·5毫米之金屬製薄板，以使整體重心高度位置降低 至約8〜18毫米範圍處，且配合該抗壓内板的設計，使整體 達到低重心化而擊球穩定度高、抗壓強度佳，且擊球響聲 清脆等功效。 【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 1276449 以下配σ茶考圖式之十個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 明内谷中，類似的元件是以相同的編號來表示。 ^ 1圖2-1與圖2-2所示，本發明之低重心化高爾 夫球頭2之一第一較佳實施例，是為一木桿頭。該低重心 化同爾夫球碩2包含_中空的球頭主體21、—金屬製的薄 板22，以及一片狀的抗壓内板23。 /求員主體21具有一形成於其頂面的開槽211，以及 一凹陷設置於其頂面且界定出該開槽2ιι的環接垣部212。 、該薄板22 (即相當於木桿頭之頂蓋部分）的厚度是界 於〇.1〜〇·5毫米（mm)，利用低比重之膠合劑，使該薄板22 周緣與該球頭主體21之環接垣部212交疊黏合，該薄板22 便膠合於該球頭主體21之開槽211處。當然，該薄板^也 可以是透過低溫硬焊或電阻焊卫法而與該球頭主體 在一起。 言4板22之材質是選自於下列物所構成之群組：欽洽 金、紹合金、鎂合金，以及不鏽鋼；本實 22為鈦合金所製成。 ^ m 該抗壓内板23之比重是低於2 8 ’是膠合固定在該薄 ^反22對應該開槽211之區域的底面±， 戎開槽211中。該抗壓内板23 、 成之群組：碳纖維複合材、玻自於下列物所構 材、短纖維熱塑性複合材、鈦纖料=材、I纖維複合 爽维複合材、鈦網複合材、 1276449 紹口金’以及鎮合金；本實施例中，該抗壓内板23是碳纖 維複合材所製成。 因此，忒低重心化咼爾夫球頭2於實際使用上，確實 能發揮下列優點： 1·低重心配重設計，提升擊球穩定性： 爿用厚度僅界於0.1〜G.5mm之金屬製的薄板22與該 求頭主體21接合在一起（本實施例是使用低比重之膠合劑 . 以使兩者接合），使該低重心化高爾夫球頭U整體重心 同度位置便此有效降低至約8〜18mm冑，而有利於讓球以 高飛行彈道且低後旋量之條件飛擊出，有效提升球擊出後 的飛仃彈道與飛行距離，整體之擊球穩定性佳，明顯改善 一般高爾夫球頭之重心位置偏高而位約^以瓜瓜處，以 致擊球穩定性差的問題。 2·抗壓性與抗衝擊性佳： 再者，配合將比重低於2·8之輕質且抗壓性佳的抗壓 内板23 ’是膠黏疊置於該薄板22底面，藉以強化該薄板 22之抗壓性、抗衝擊性與結構剛性，使得整體之結構強 度佳，且於擊球時之響聲更為清脆，有效改善一般高爾夫 球頭之抗壓性差而易凹陷變形，且擊球響聲低沉的問題。 如圖3-1與圖3_2所示，本發明之低重心化高爾夫球頭 2之第一較佳實施例，與該第一較佳實施例不同處在於， 膠合固定在該薄板22底面之該抗壓内板23的縱截面為丁 形。 … 如圖4·1與圖4_2所示，本發明之低重心化高爾夫球頭 1276449 2之一第三較佳實施例，與該第一較佳實施例不同處在於， 膠合固定在該薄板22底面之該抗壓内板23的縱截面，是 為籍排形。 如圖5-1與圖5_2所示，本發明之低重心化高爾夫球頭 2之一第四較佳實施例，與該第一較佳實施例不同處在於， 遠低重心化高爾夫球頭2是包含二相間隔地膠合固定於該 薄板22底面之片狀的抗壓内板23。 如圖6-1與圖6_2所示，本發明之低重心化高爾夫球頭 2之一第五較佳實施例，與該第一較佳實施例不同處在於， 该低重心化高爾夫球頭2是包含三間隔排列地膠合固定於 该薄板22底面之片狀的抗壓内板23。 如圖7-1與圖7-2所示，本發明之低重心化高爾夫球頭 2之一第六較佳實施例，與該第四較佳實施例不同處在於， 膠合固定於該薄板22底面之該二抗壓内板23的縱截面， 是為T形。 如圖8_1與圖8-2所示，本發明之低重心化高爾夫球頭 2之一第七較佳實施例，與該第四較佳實施例不同處在於， 膠合固定於該薄板22底面之該二抗壓内板23的縱截面， 是為L形。 如圖9_1與圖9-2所示，本發明之低重心化高爾夫球頭 2之一第八較佳實施例，與該第五較佳實施例不同處在於， 膠合固定於該薄板22底面之該三抗壓内板23的縱截面， 其中一者為T形，另二者為l形。 如圖10-1與圖10-2所示，本發明之低重心化高爾夫球 1276449 頭2之一第九較佳實施例，與該第五較佳實施例不同處在 於，膠合固定於該薄板22底面之該三抗壓内板23的縱截 面，其中一者為倒U形，另二者為l形。 如圖11與圖12所示’本發明之低重心化高爾夫球頭2 之一第十較佳實施例’與該第二較佳實施例不同處在於， 該球頭主體21更具有二分別凹陷設置於該環接垣部212前 、後表面上且皆與該開槽211相通之τ形坑槽213。而且， 該抗壓内板23具有一位在該薄板22對應該開槽211之區域 内之T形板體部231，以及二分別自該板體部23丨前、後侧 緣向外延伸至該薄板22與該環接垣部212間之τ形突板部 232 ;該二突板部232是分別插置於該二坑槽213中。 同樣地，本實施例亦可達到低重心配重設計而使整體 擊球穩定性，特別是，整體抗壓性抗衝擊性佳，且擊球響 聲清脆等功效。 另外一提的是，於前述十個較佳實施例中，該開槽211 是位於該球頭主體21之頂面處，該薄板22即相當於木桿 頭頂蓋。卩刀。g然於另種貫施態樣時，該開槽211也可以形 成於該球頭主體21的側面上，該薄板22便相當於木桿頭 側邊部分。 歸納上述，本發明之低重心化高爾夫球頭2，主要利用 接合於該球頭主體21上且厚度界於〇1〜〇·5毫米之金屬製 薄板22，配合低比重之抗壓内板23的設計，得以達到有效 降低重心而使整體擊球穩定性佳、整體抗壓強度佳，且擊 球響聲清脆等功效，故確實可達到本發明之目的。 10 1276449 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所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】 圖1疋立體分解圖，說明本發明低重心化高爾夫球 頭的一第一較佳實施例； 圖2-1是該第一較佳實施例之一局部組合剖視圖； 圖2-2是-俯視圖’說明該第—較佳實施例之—薄板與 一抗壓内板間的相對位置； 圖3-1是一局部剖視圖’說明本發明低重心化高爾夫球 頭的一第二較佳實施例’其一抗壓内板之縱截面為τ形； 圖3-2是一俯視圖’說明該第二較佳實施例之一薄板與 該抗壓内板間的相對位置； 圖4-1是一局部剖視圖’說明本發明低重心化高爾夫球 頭的-第三較佳實施例’其一抗壓内板之縱截面為鰭排形 圖4-2是一俯視圖’說明該第三較佳實施例之一薄板與 該抗壓内板間的相對位置·， 圖疋力剖視圖，說明本發明低重心化高爾夫球 頭的-第四較佳實施例，其二抗壓内板是片狀且相間隔； 圖5-2是一俯視圖，說明該第四較佳實施例之一薄板與 該二抗壓内板間的相對位置； 圖6-1疋-局部剖視圖，說明本發明低重心化高爾夫球 1276449 頭的一第五較佳實施例，其三抗壓内板是片狀且相間隔； …圖6·2是-俯視圖’說明該第五較佳實施例之一薄板與 该三抗壓内板間的相對位置； 圖7 1疋力部剖視圖，說明本發明低重心化高爾夫球 頭的-第六較佳實施例，其二抗壓内板之縱截面為τ形； …圖7-2是一俯視圖’說明該第六較佳實施例之一薄板與 5亥一抗壓内板間的相對位置； 圖8]是一局部剖視圖，說明本發明低重心化高爾夫球 碩的-第七較佳實施例’其二抗壓内板之縱截面為[形； ▲圖8-2是一俯視圖，f兒明該第七較佳實施例之一薄板與 5亥一抗壓内板間的相對位置； _圖9-1是一局部剖視圖，說明本發明低重心化高爾夫球 頭的第八較佳實施例，其三抗壓内板之縱截面依序為l 形、T形與L形； ▲圖9-2是一俯視圖，說明該第八較佳實施例之一薄板與 该三抗壓内板間的相對位置； 圖10-1是一局部剖視圖，說明本發明低重心化高爾夫 球頭的-第九較佳實施例，其三抗壓内板之縱戴面依序為L 形、倒U形與L形； 圖10-2是一俯視圖，說明該第九較佳實施例之一薄板 與該三抗壓内板間的相對位置； 圖11是一立體分解圖，說明本發明低重心化高爾夫球 頭的一第十較佳實施例；以及 圖12是該第十較佳實施例之一組合剖視圖。 12 1276449 【主要元件符號說明】 2 低重心化高爾夫球頭 21 球頭主體 211開槽 212環接垣部 213坑槽 22 薄板 23 抗壓内板 231板體部 232突板部 13Incorporating or locking the weight object into a single king, the most basic note/specialized ball head body top or side structure thickness, ", different manufacturing methods will derive different problems: Casting molder: The thickness of the thin shell structure is still formed by precision casting. The thickness of the shell is still above 0.6 mm. The ball god (four)/main body pays 8~9" ancient... J Yishuo's overall center of gravity height is within 2 cm, so the center of gravity Downgrading to j is not good. If it is further ground to a thickness of about 2.2~〇 5 millimeters, the thickness of the casting is insufficient, and the castings are not strong enough. However, it is easy to produce problems such as insufficient strength of the grinding, deformation of the depression, and the weight of the ball hitting 1276449. 2. Brazing bond: In addition, a metal sheet with a thickness of 0.55 mm or more (such as a top cover portion) is formed and assembled into a complete ball head body by brazing, not only the pressure resistance and impact resistance of the metal sheet. They are all insufficient, and are easily deformed by impact collision, and their structural rigidity is poor, and the sound is low and not crisp. Therefore, in the brazing process, the solder with a higher specific gravity must be filled, which will increase the overall center of gravity. The height of the center of gravity of the ball head is still high and is about 18 to 212 mm. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a low center of gravity golf club which is designed to have a low center of gravity and which can effectively improve the stability of the shot. Thus, the low center of gravity golf club of the present invention comprises a hollow ball head body, a metal sheet, and a pressure resistant inner panel. The ball head body has a slot. The sheet is joined in the groove of the ball body and has a thickness of 0.1 to 0.5 mm. The pressure resistant inner panel is located in the main body of the ball head and is glued to the inner surface of the thin plate. The effect of the invention is to use a metal plate bonded to the ball body and having a thickness of 0.1 to 〇5 mm to reduce the overall center of gravity height to a range of about 8 to 18 mm, and cooperate with the pressure resistance. The design of the board makes the overall low center of gravity and high stability of the shot, good compressive strength, and the sound of the ball is crisp. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be apparent from the detailed description of the ten preferred embodiments of the sigma tea pattern below 1276449. 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. 1 1 and 2-2, a first preferred embodiment of the low center of gravity golf ball head 2 of the present invention is a wooden head. The low center of gravity ball 2 includes a hollow ball head main body 21, a metal plate 22, and a sheet-shaped pressure resistant inner plate 23. The requester body 21 has a slit 211 formed on a top surface thereof, and a ring-shaped weir portion 212 recessed on the top surface thereof and defining the slit 2 ι. The thickness of the thin plate 22 (that is, the top cover portion of the wooden head) is defined by 〇.1~〇·5 mm (mm), and the periphery of the thin plate 22 and the ball head body are made by using a low specific gravity glue. The ring-shaped tab portion 212 of the 21 is overlapped and bonded, and the thin plate 22 is glued to the slot 211 of the ball-end main body 21. Of course, the sheet can also be joined to the body of the ball by low temperature brazing or resistance welding. The material of the fourth plate 22 is selected from the group consisting of: Qinqin, Shaoxing, magnesium alloy, and stainless steel; and the real 22 is made of titanium alloy. ^ m The specific gravity of the pressure-resistant inner plate 23 is lower than 2 8 ', which is glued to the bottom surface of the thin portion 22 opposite to the groove 211, and is opened in the groove 211. The pressure resistant inner plate 23 and the group thereof are: carbon fiber composite material, glass material from the following materials, short fiber thermoplastic composite material, titanium fiber material=material, I fiber composite refreshing composite material, titanium mesh composite material, 1276449 Shaokoujin' and the town alloy; in this embodiment, the pressure resistant inner plate 23 is made of a carbon fiber composite material. Therefore, the lowering of the center of gravity of the golf ball head 2 in actual use, can really play the following advantages: 1. Low center of gravity weight design, improve the stability of the ball: 爿 use a thickness of only 0.1 ~ G.5mm metal The thin plate 22 is joined to the head main body 21 (in this embodiment, a low specific gravity glue is used to join the two), so that the center of gravity of the low center of gravity golf ball U is effectively reduced. It is about 8~18mm胄, which is beneficial to let the ball fly out under the condition of high flight trajectory and low back spin, effectively improving the flying trajectory and flight distance after the ball is hit. The overall ball stability is good, obviously It improves the position of the center of gravity of the general golf head and the position of the golf ball is high, so that the stability of the hitting ball is poor. 2. Good pressure resistance and impact resistance: In addition, a light-resistant and pressure-resistant pressure-resistant inner plate 23' having a specific gravity lower than 2·8 is adhered to the bottom surface of the thin plate 22, thereby strengthening The pressure resistance, impact resistance and structural rigidity of the thin plate 22 make the overall structural strength good, and the sound of the ball is more crisp when hitting the ball, effectively improving the pressure resistance of the general golf head and being easily deformed by the sun, and hitting The ball is low. As shown in FIGS. 3-1 and 3-2, the first preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the first preferred embodiment in that the glue is fixed to the bottom surface of the thin plate 22. The longitudinal section of the pressure resistant inner plate 23 is a butt shape. As shown in FIG. 4·1 and FIG. 4-2, a third preferred embodiment of the low center of gravity golf club 1276449 2 of the present invention is different from the first preferred embodiment in that the thin plate 22 is glued. The longitudinal section of the pressure-resistant inner panel 23 on the bottom surface is in the shape of a row. As shown in FIGS. 5-1 and 5-2, a fourth preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the first preferred embodiment in that the low center of gravity golf club 2 It is a sheet-shaped pressure resistant inner plate 23 which is bonded to the bottom surface of the thin plate 22 at two intervals. As shown in FIGS. 6-1 and 6-2, a fifth preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the first preferred embodiment in that the low center of gravity golf club 2 It is a sheet-shaped pressure-resistant inner panel 23 which is glued and fixed to the bottom surface of the thin plate 22 in three spaced intervals. As shown in FIGS. 7-1 and 7-2, a sixth preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the fourth preferred embodiment in that the veneer 22 is glued to the thin plate 22 The longitudinal section of the two pressure resistant inner plates 23 on the bottom surface is T-shaped. As shown in FIG. 8_1 and FIG. 8-2, a seventh preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the fourth preferred embodiment in that the glue is fixed to the bottom surface of the thin plate 22. The longitudinal section of the second pressure resistant inner plate 23 is L-shaped. As shown in FIG. 9_1 and FIG. 9-2, an eighth preferred embodiment of the low center of gravity golf club 2 of the present invention differs from the fifth preferred embodiment in that the glue is fixed to the bottom surface of the thin plate 22. The longitudinal section of the three pressure resistant inner plate 23, one of which is T-shaped, and the other two are l-shaped. As shown in FIG. 10-1 and FIG. 10-2, a ninth preferred embodiment of the low center of gravity golf ball 1276449 of the present invention is different from the fifth preferred embodiment in that the glue is fixed to the thin plate. 22 is a longitudinal section of the three pressure resistant inner plates 23 on the bottom surface, one of which is inverted U-shaped and the other two are l-shaped. 11 and 12, a tenth preferred embodiment of the low center of gravity golf club 2 of the present invention is different from the second preferred embodiment in that the ball head main body 21 has two recesses respectively. The θ-shaped sump 213 is disposed on the front and rear surfaces of the ring-shaped dam 212 and communicates with the slot 211. Moreover, the pressure-resistant inner panel 23 has a T-shaped plate body portion 231 in a region where the thin plate 22 corresponds to the groove 211, and two extend outward from the front and rear side edges of the plate body portion 23, respectively. The thin plate 22 and the ring-shaped protruding portion 232 between the ring-shaped dam portions 212 are inserted into the two-pit grooves 213, respectively. Similarly, the present embodiment can also achieve a low center of gravity weight design to achieve overall ball striking stability, in particular, overall pressure resistance and impact resistance, and the sound of the ball is crisp. Further, in the ten preferred embodiments, the slot 211 is located at the top surface of the ball head main body 21, and the thin plate 22 corresponds to the top cover of the wood head. Scythe. g, in another embodiment, the slit 211 may also be formed on the side of the ball head main body 21, and the thin plate 22 corresponds to the side portion of the wood head. In summary, the low center of gravity golf head 2 of the present invention mainly utilizes a metal thin plate 22 bonded to the ball head main body 21 and having a thickness of 〇1 to 55 mm, and is combined with a low specific gravity pressure resistant inner plate 23. The design can achieve the purpose of effectively reducing the center of gravity and achieving good overall ball striking stability, good overall compressive strength, and crisp sound of the ball, so that the object of the present invention can be achieved. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent change of the patent application scope and the description of the invention is Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view showing a first preferred embodiment of a low center of gravity golf club of the present invention; FIG. 2-1 is a partial sectional view of the first preferred embodiment; 2-2 is a top view 'illustrating the relative position between the thin plate and a pressure resistant inner plate of the first preferred embodiment; and FIG. 3-1 is a partial cross-sectional view showing a first embodiment of the low center of gravity golf ball of the present invention The preferred embodiment of the present invention has a longitudinal section of a pressure-resistant inner plate of a τ shape; and FIG. 3-2 is a plan view illustrating the relative position between the thin plate of the second preferred embodiment and the pressure resistant inner plate; 4-1 is a partial cross-sectional view illustrating a low-centered golf club head of the present invention - a third preferred embodiment of the present invention. The longitudinal section of a pressure-resistant inner panel is a fin-shaped shape. FIG. 4-2 is a plan view illustrating the first The relative position between the thin plate and the pressure resistant inner plate of the three preferred embodiments, and the cross-sectional view of the low center of gravity golf ball of the present invention, the fourth preferred embodiment, the second pressure resistant inner plate is Sheet and spaced apart; FIG. 5-2 is a top view showing one of the fourth preferred embodiments The relative position between the two pressure resistant inner plates; Fig. 6-1 is a partial cross-sectional view showing a fifth preferred embodiment of the low centering golf ball 1276449 of the present invention, wherein the three pressure resistant inner plates are sheet-like and phase Interval; Fig. 6·2 is a top view 'illustrating the relative position between the thin plate of the fifth preferred embodiment and the three pressure resistant inner plate; Fig. 7 is a cross-sectional view showing the low center of gravity golf ball of the present invention In the first-sixth preferred embodiment, the longitudinal section of the second pressure-resistant inner plate is τ-shaped; FIG. 7-2 is a plan view illustrating one of the sixth preferred embodiment and the sheet 5 Figure 8] is a partial cross-sectional view showing the low-centered golf ball of the present invention - the seventh preferred embodiment of the second longitudinal compression-resistant inner plate is [shaped; ▲ Figure 8-2 Is a top view, showing the relative position between the thin plate of the seventh preferred embodiment and the 5H-compressed inner plate; FIG. 9-1 is a partial cross-sectional view showing the low center of gravity golf ball of the present invention. In the eighth preferred embodiment, the longitudinal section of the three-pressure inner plate is in the form of an l-shape, a T-shape and an L-shape; ▲ Figure 9-2 is a Figure 10 is a partial cross-sectional view showing the relative position between the thin plate of the eighth preferred embodiment and the three-pressure resistant inner plate. Figure 10-1 is a partial cross-sectional view showing the ninth preferred embodiment of the low center of gravity golf ball of the present invention. For example, the longitudinal wear surface of the three anti-pressure inner plates is L-shaped, inverted U-shaped and L-shaped in sequence; FIG. 10-2 is a top view showing one of the ninth preferred embodiment and the three-pressure resistant inner layer Figure 11 is an exploded perspective view showing a tenth preferred embodiment of the low center of gravity golf club of the present invention; and Figure 12 is a cross-sectional view of one of the tenth preferred embodiments. 12 1276449 [Description of main component symbols] 2 Low center of gravity golf club head 21 Ball head body 211 slotted 212 ring joint 213 groove 2 Thin plate 23 Compressed inner plate 231 plate body 232 protruding plate 13