TW201341019A - Sports racket and method of manufacturing same - Google Patents

Abstract

The present disclosure provides a racket face that resist stresses without becoming unacceptably heavy. The present disclosure also provides a racket face that has more rounded corners and a shorter outer side that results in greater strength with lighter weight, an even larger sweet spot, and improved playability and appearance. The present disclosure further provides a racket face with appropriately curved corners so that the racket face has the desired strength and playability, yet the affected strings can be made to vibrate at the same frequencies as the unaffected strings. The present disclosure still further provides a racket face that has lockable grommets or LG's as integral to the racket face to maintain the equal string vibration frequencies on the shorter strings within the rounded corners. These grommets enable the setting of the tension of each string to optimize the sweet spot of the racket face. In certain preferred embodiments, the racket may be made of a metallic construction material. The metal framework or construction will not be tubular but will be such to enable seamless incorporation of the lockable grommets, to maintain narrow but strong corners, control vibrations, and create a pleasant looking and aerodynamic one-piece product. The present disclosure also provides for integral lockable grommets strong enough to secure strings with tensions up to 70 lbs, yet light enough to not adversely affect the racket weight or balance. The present disclosure further provides for the use of lockable grommets that enable implementation of an improved stringing protocol. The protocol alternates main and cross string tensioning, to sequentially eliminate any significant bowing of the frame or frame face during stringing. This allows the sides of the frame to be very light but still strong enough for stability, because the strings themselves will contribute to the stability. Thus, the strings provide additional structural support that enables the use of metal instead of carbon fiber, notwithstanding metal's lower strength to weight ratio, to obtain a strong yet light racket. The present disclosure still further provides an equivalent stringing mechanism in which all strings are tensioned simultaneously. The present disclosure yet further provides for the use of lockable grommets that enable the racket stringer to precisely set the desired tensions on each string. Thus, it is possible to further enlarge the sweet spot by providing lower tensions (higher power) on strings near the frame sides. Also, the lockable grommets will allow for simple string tension adjustment and individual string replacement. The rackets of the present disclosure, including rackets that have metallic frames with somewhat rounded corners, integrated lockable grommets, and coordinated stringing protocols, provide for sweet spots that cover nearly the entire face of the racket. The rackets can be designed to provide almost any desired weight and balance, maximal power without any loss of control, and an appearance that is unique and pleasing.

Description

運動球拍及其製造方法 Sports racket and manufacturing method thereof

本創作係涉及運動球拍，尤指一種運動球拍及其製造與拉線方法。 This creation relates to sports racquets, especially a sports racquet and its method of manufacturing and pulling.

美國專利號6,344,006及7,081,056提出具有等長直線與等長橫線，或相等網線震動頻率之網球拍的優點。而在美國專利申請案號61/436,259中，則揭露以碳纖維為基礎之製造及測試此種網球拍的方法。 U.S. Patent Nos. 6,344,006 and 7,081,056 disclose the advantages of a tennis racquet having equal length straight lines and equal length horizontal lines, or equal network line vibration frequencies. A method of manufacturing and testing such a tennis racket based on carbon fiber is disclosed in U.S. Patent Application Serial No. 61/436,259.

相對於前述的先前技術，本發明之運動球拍具有更高的強度、重量在可接受範圍與較大的甜蜜點，以及較佳的可玩性，可免除所有直線與橫線都必須等長的要求。 Compared with the foregoing prior art, the sports racquet of the present invention has higher strength, an acceptable weight range and a larger sweet spot, and better playability, and can eliminate all straight lines and horizontal lines from being equal in length. Claim.

本發明揭露一種可抵抗應力而不會過於沈重的運動球拍面。 The present invention discloses an athletic racquet face that resists stress without being too heavy.

本發明亦揭露一種具有較多圓形角部與較短外側的運動球拍面，可產生較大強度、較輕的重量、更大的甜蜜點、以及較佳的可玩性與外觀。 The present invention also discloses an exercise racquet face having a plurality of rounded corners and a shorter outer side, which can produce greater strength, lighter weight, greater sweetness, and better playability and appearance.

本發明更進一步揭露一種具有適度彎曲之角部的運動球拍面，使運動球拍面具有預期之強度與可玩性，而受影響之網線可被製做成與未受影響之網線在相同的頻率下震動。 The present invention further discloses a sports racquet face having a moderately curved corner, which provides the expected strength and playability of the sports racquet face, and the affected cable can be made to be the same as the unaffected cable. Shake under the frequency.

本發明又更進一步揭露一種具有可鎖定扣環(或LG)之運動拍面，這些可鎖定扣環係與運動球拍面一體成型以在圓形角部內之較短網線上維持相等的網線震動頻率。這些可鎖定扣環可設定各網線的張力以最優化運動球拍面的甜蜜點。 The present invention further discloses a motion surface having a lockable buckle (or LG) integrally formed with the sports racquet surface to maintain equal mesh vibration on a shorter network within the circular corner. frequency. These lockable buckles set the tension of each cable to optimize the sweet spot of the sports racket.

在某些較佳實施例中，運動球拍可由金屬材料製造。金屬框架或結構不會成管狀，但可使可鎖定扣環一體納入其中，以維持狹窄但堅 強的角部、控制震動、並產生美觀的外表與符合空氣動力學的一件式產品。 In certain preferred embodiments, the athletic racquet can be fabricated from a metallic material. The metal frame or structure does not form a tube, but the lockable buckle can be integrated into it to maintain a narrow but firm Strong corners, control vibration, and produce an aesthetically pleasing appearance with aerodynamic one-piece products.

本發明亦同時揭露一體成型式的可鎖定扣環，其強度可使網線承受高達70磅的張力，但仍然夠輕到不會影響網球拍的重量或平衡。 The present invention also discloses an integrally formed lockable buckle that is strong enough to withstand up to 70 pounds of tension, but still light enough to not affect the weight or balance of the tennis racket.

本發明進一步揭露可鎖定扣環的使用，以實作出較佳的拉線程序。該程序係交替拉緊直線與橫線，以在拉線過程中，依序消除拍框或框面之任何明顯的彎曲。這使得拍框的四側非常輕巧，但仍然夠堅強到能維持穩定度，因為網線本身會對穩定度有貢獻。因此，雖然金屬有較低的強度重量比，但網線會提供額外的結構支持力，使得我們可以用金屬而非碳纖維來製造強而輕的網球拍。 The present invention further discloses the use of a lockable buckle to achieve a preferred wire drawing procedure. The program alternately tensions the straight and horizontal lines to eliminate any significant bending of the frame or frame during the threading process. This makes the four sides of the frame very lightweight, but still strong enough to maintain stability, because the cable itself contributes to stability. Therefore, although the metal has a lower strength to weight ratio, the mesh provides additional structural support, allowing us to make strong and light tennis rackets from metal rather than carbon.

本發明又進一步揭露一種等效的拉線機構，其中所有的網線都同時被拉緊。 The present invention further discloses an equivalent wire drawing mechanism in which all of the wire wires are simultaneously tensioned.

本發明又進一步揭露可鎖定扣環的使用，使運動球拍的拉線人員可精確地設定各網線預期的張力。因此，我們可藉由對靠近拍框四側之網線提供較低的張力(較高的威力)而進一步放大甜蜜點。同時，可鎖定扣環可使得網線張力容易調整及可方便更換網線。 The present invention further discloses the use of a lockable buckle that allows the puller of the sports racquet to accurately set the desired tension of each of the nets. Therefore, we can further enlarge the sweet spot by providing a lower tension (higher power) to the wire near the four sides of the frame. At the same time, the lockable buckle can make the tension of the cable easy to adjust and the cable can be easily replaced.

本發明揭露之網球拍包括金屬拍框及圓形角部、一體成型的可鎖定扣環、以及協調之拉線程序，可提供幾乎佔據整個拍面大小的甜蜜點。該運動球拍可被設計成提供幾乎所有預期的重量與平衡、具備最大威力而不喪失任何控制、以及特殊與美麗的外觀。 The tennis racket disclosed by the present invention comprises a metal frame and a rounded corner, an integrally formed lockable buckle, and a coordinated pull line program, which provides a sweet spot that occupies almost the entire face size. The sports racquet can be designed to provide almost all of the expected weight and balance, with maximum power without losing any control, and a special and beautiful appearance.

10‧‧‧網球拍 10‧‧‧ tennis racket

11‧‧‧拍框 11‧‧‧ Frame

12‧‧‧角部 12‧‧‧ corner

14‧‧‧四側 14‧‧‧ four sides

15‧‧‧拍面 15‧‧‧ face

18‧‧‧邊側 18‧‧‧ side

19‧‧‧網線 19‧‧‧Network cable

17‧‧‧角部曲率 17‧‧‧Corner curvature

20‧‧‧拍面 20‧‧‧ Faces

21‧‧‧拍框 21‧‧‧ Frame

22‧‧‧邊緣 22‧‧‧ edge

22‧‧‧角部 22‧‧‧ corner

20‧‧‧網球拍 20‧‧‧ tennis racket

22‧‧‧圓形角部 22‧‧‧round corner

24‧‧‧邊側 24‧‧‧ side

25‧‧‧端部 25‧‧‧End

26‧‧‧網線 26‧‧‧Network cable

28‧‧‧網線 28‧‧‧Network cable

100‧‧‧網球拍面 100‧‧‧ tennis racket

110‧‧‧拍框 110‧‧‧ Frame

120‧‧‧角部曲率 120‧‧‧Corner curvature

130‧‧‧網線 130‧‧‧Network cable

132‧‧‧最長直線 132‧‧‧Longest straight line

134‧‧‧最短直線 134‧‧‧ shortest straight line

136‧‧‧最長橫線 136‧‧‧ longest horizontal line

138‧‧‧最短橫線 138‧‧‧ Shortest horizontal line

120‧‧‧圓形角部 120‧‧‧round corner

140‧‧‧長側 140‧‧‧Long side

150‧‧‧外短側或遠端 150‧‧‧Outside short or distal

160‧‧‧內短側 Short side of 160‧‧

170‧‧‧喉部 170‧‧‧ throat

110、140、150及160‧‧‧拍面邊側 110, 140, 150 and 160‧‧‧ face sides

130‧‧‧橫線 130‧‧‧ horizontal line

122‧‧‧遠端角部側 122‧‧‧ distal corner side

134及136‧‧‧橫線 134 and 136‧‧‧ horizontal lines

134及138‧‧‧短網線 134 and 138‧‧‧ short cable

132及136‧‧‧長網線 132 and 136‧‧ long cable

210‧‧‧方形角部 210‧‧‧ square corner

200‧‧‧網球拍 200‧‧‧ tennis racket

230‧‧‧橢圓形角部 230‧‧‧Oval corner

220‧‧‧網球拍 220‧‧‧ tennis racket

235‧‧‧邊側 235‧‧‧ side

240‧‧‧雛形 240‧‧‧ prototype

250‧‧‧圓形的角部 250‧‧‧round corner

255‧‧‧截面 255‧‧‧section

240‧‧‧網球拍 240‧‧‧ tennis racket

245‧‧‧邊側 245‧‧‧ side

240‧‧‧網球拍 240‧‧‧ tennis racket

500‧‧‧扣環 500‧‧‧ buckle

510‧‧‧中心孔 510‧‧‧ center hole

520‧‧‧圓形頭部 520‧‧‧round head

511‧‧‧孔洞接納段 511‧‧‧ hole acceptance section

512‧‧‧內分節(面對網線床) 512‧‧‧ inner section (facing the cable bed)

514‧‧‧外孔 514‧‧‧ outer hole

516‧‧‧錐形之中央連結段 516‧‧‧Conical central link

519‧‧‧螺紋柱體 519‧‧‧Threaded cylinder

516‧‧‧錐形孔段 516‧‧‧Conical hole section

510‧‧‧扣環洞 510‧‧‧ buckle ring

525‧‧‧偏心軸 525‧‧‧Eccentric shaft

522‧‧‧凸輪 522‧‧‧ cam

540‧‧‧扣環 540‧‧‧ buckle

541‧‧‧內部 541‧‧‧Internal

544‧‧‧外部 544‧‧‧External

543‧‧‧外凸面 543‧‧‧ convex surface

542‧‧‧碟片 542‧‧‧ discs

545‧‧‧內凹面 545‧‧‧ concave surface

547‧‧‧凹壓痕 547‧‧‧ concave indentation

546‧‧‧柱體 546‧‧‧Cylinder

548‧‧‧柱體 548‧‧‧Cylinder

541及544‧‧‧扣環組件 541 and 544‧‧‧ buckle components

550‧‧‧扣環 550‧‧‧ buckle

551‧‧‧內端部 551‧‧‧Inside

553‧‧‧外端部 553‧‧‧Outer end

554‧‧‧緊固孔 554‧‧‧ fastening holes

556‧‧‧小圓柱段 556‧‧‧Small cylindrical section

557‧‧‧大圓柱段 557‧‧‧large cylindrical section

555‧‧‧錐形段 555‧‧‧Cone section

558‧‧‧柱體 558‧‧‧Cylinder

620‧‧‧網線 620‧‧‧Network cable

600‧‧‧外驅動裝置 600‧‧‧External drive

600‧‧‧柱體 600‧‧‧Cylinder

595‧‧‧柱體 595‧‧‧Cylinder

900‧‧‧平台 900‧‧‧ platform

596‧‧‧接納孔 596‧‧‧Receiving holes

700‧‧‧扣環 700‧‧‧ buckle

710‧‧‧第一部份 710‧‧‧ first part

720‧‧‧第二部分 720‧‧‧Part II

750‧‧‧緊固孔 750‧‧‧ fastening holes

760‧‧‧內分段 760 ‧ ‧ inner segment

770‧‧‧中分段 Section 770‧‧

780‧‧‧外分段 780‧‧‧ outer segment

800‧‧‧扣環 800‧‧‧ buckle

850‧‧‧緊固孔 850‧‧‧ fastening holes

860‧‧‧錐形部 860‧‧‧Cone

810‧‧‧內凸端部 810‧‧ ‧ inner convex end

820‧‧‧外凸端部 820‧‧‧Outer convex end

950‧‧‧緊固孔 950‧‧‧ fastening holes

960‧‧‧內分段 960 ‧ ‧ inner segment

970‧‧‧中分段 Section 970‧‧‧

980‧‧‧外分段 980‧‧‧ outer segment

920‧‧‧網線 920‧‧‧ network cable

910‧‧‧負載球 910‧‧‧Loading ball

1000‧‧‧扣環 1000‧‧‧ buckle

1010‧‧‧網線 1010‧‧‧ network cable

1020‧‧‧左拍框孔 1020‧‧‧ Left frame hole

1030‧‧‧螺釘 1030‧‧‧ screws

1040‧‧‧右拍框孔 1040‧‧‧Right frame hole

1050‧‧‧右螺孔 1050‧‧‧Right screw hole

7050‧‧‧鋁合金或鈦 7050‧‧‧Aluminum or titanium

1100‧‧‧角部 1100‧‧‧ corner

1110‧‧‧裂痕 1110‧‧‧ crack

1120‧‧‧扣環 1120‧‧‧ buckle

1130‧‧‧凹穴 1130‧‧‧ recess

1140‧‧‧網線 1140‧‧‧ network cable

1200‧‧‧短棒 1200‧‧‧ short stick

1220‧‧‧彈性體 1220‧‧‧ Elastomers

1240‧‧‧外握把殼體 1240‧‧‧ outer grip housing

1200‧‧‧終結棒 1200‧‧‧End Bar

1310‧‧‧外拍面側 1310‧‧‧Outer side

1320‧‧‧短橫線 1320‧‧‧Dash

1330‧‧‧直線 1330‧‧‧ Straight line

1300‧‧‧拍框 1300‧‧‧ Frame

1340‧‧‧橫向孔洞 1340‧‧‧Transverse holes

1400‧‧‧直線 1400‧‧‧ Straight line

1420‧‧‧內拍面 1420‧‧‧ inside the face

1430‧‧‧右拍面 1430‧‧‧Right face

1410‧‧‧橫線 1410‧‧‧ horizontal line

910‧‧‧柱體 910‧‧‧Cylinder

911‧‧‧固定結構 911‧‧‧Fixed structure

912‧‧‧螺紋柱體 912‧‧‧Threaded cylinder

913‧‧‧支撐件 913‧‧‧Support

1‧‧‧把手 1‧‧‧Handle

2‧‧‧軸體 2‧‧‧Axis

3‧‧‧觸發器 3‧‧‧ Trigger

4‧‧‧捲邊柱體 4‧‧‧Crimping cylinder

5‧‧‧網線拉緊柱體 5‧‧‧Network cable tensioning cylinder

6‧‧‧內拍框支撐棒 6‧‧‧Inner frame support rod

7‧‧‧外拍框支撐棒 7‧‧‧Outer frame support rod

8‧‧‧阻尼彈簧 8‧‧‧damper spring

9‧‧‧卡子 9‧‧‧Kiko

20‧‧‧球拍 20‧‧‧ racket

1500‧‧‧橢圓部內的區域 1500‧‧‧Area in the ellipse

1500‧‧‧甜蜜點 1500‧‧‧ sweet spots

1600‧‧‧甜蜜點 1600‧‧‧ sweet spot

1700‧‧‧甜蜜點 1700‧‧‧Sweet spot

1800‧‧‧甜蜜點 1800‧‧‧ sweet spot

第1圖係先前技術之示意圖，該先前技術係如圖1A至1D所示。 Figure 1 is a schematic diagram of a prior art, as shown in Figures 1A through 1D.

第1A圖係一傳統矩形運動球拍面的平面圖。 Figure 1A is a plan view of a conventional rectangular sports racquet face.

第1B圖係一傳統運動球拍面之與其二鄰側相切之橢圓形角部的放大圖。 Figure 1B is an enlarged view of an elliptical corner of a conventional sports racquet face tangent to its two adjacent sides.

第1C圖係一具有最小曲率的運動球拍面。 Figure 1C is a sports racquet face with minimal curvature.

第1D圖係一具有小曲率及厚角部的運動球拍面。 The 1D figure is a sports racquet face having a small curvature and a thick corner.

第2圖係本發明之運動球拍面。 Figure 2 is a sports racquet face of the present invention.

第3圖係本發明運動球拍面之一較佳實施例。 Figure 3 is a preferred embodiment of the sports racquet face of the present invention.

第4A圖係一具有方形角部之碳纖維(CF)運動球拍。 Figure 4A is a carbon fiber (CF) sports racquet with square corners.

第4B圖係一具有橢圓形角部之碳纖維運動球拍。 Figure 4B is a carbon fiber sports racquet with an elliptical corner.

第4C圖係一具有厚的圓形角部，且向外彎曲的碳纖維運動球拍。 Figure 4C is a carbon fiber sports racquet with a thick rounded corner and outwardly curved.

第4D圖係第4C圖中拉線後具有平直邊側之運動球拍。 The 4D figure is a sports racket having a straight side after the drawing in the 4Cth drawing.

第4E圖係第4C圖之運動球拍的CAD。 Figure 4E is a CAD of the sports racket of Figure 4C.

第5A至5C圖係本發明之第一可鎖定扣環(LG1)。 5A to 5C are the first lockable buckles (LG1) of the present invention.

第6A至6D圖係本發明之第二可鎖定扣環(LG2)。 Figures 6A through 6D are second lockable buckles (LG2) of the present invention.

第7A至7D圖係本發明之第三可鎖定扣環(LG3)。 Figures 7A through 7D are third lockable buckles (LG3) of the present invention.

第8A至8C圖係本發明之第四可鎖定扣環(LG4)。 8A to 8C are diagrams showing the fourth lockable buckle (LG4) of the present invention.

第9A至9E圖係本發明之一螺紋捲邊柱體。 Figures 9A through 9E are diagrams of a threaded crimping cylinder of the present invention.

第10圖係一網線拉緊柱體及一外螺紋捲邊柱體。 Figure 10 is a wire drawing tensioning cylinder and an external thread crimping cylinder.

第11A至11C圖係本發明之第五可鎖定扣環(LG5)。 11A to 11C are diagrams showing the fifth lockable buckle (LG5) of the present invention.

第12A至12C圖係本發明之第六可鎖定扣環(LG6)。 12A to 12C are diagrams showing the sixth lockable buckle (LG6) of the present invention.

第13A至13E圖係本發明之第七可鎖定扣環(LG7)。 Figures 13A to 13E show the seventh lockable buckle (LG7) of the present invention.

第14A圖係本發明之第八可鎖定扣環(LG8)。 Figure 14A is an eighth lockable buckle (LG8) of the present invention.

第14B圖係第14A圖之LG8的另兩種替代元件。 Figure 14B is an alternative to the LG8 of Figure 14A.

第15圖顯示由被拉緊之網線對拍框所施加的力量係與CF織料垂直。 Figure 15 shows that the force applied by the tensioned wire to the frame is perpendicular to the CF fabric.

第16圖顯示由被拉緊之網線對拍框所施加的力量係與CF夾層板之拍框邊側垂直。 Figure 16 shows that the force applied by the tensioned wire to the frame is perpendicular to the side of the frame of the CF sandwich panel.

第17圖顯示對近似矩形之拍框，其角部曲度十分陡峭，因此網線張力在角部內產生與織料平行的力量會很大。 Figure 17 shows the frame of the approximate rectangle, the corner curvature is very steep, so the tension of the wire in the corner will produce a large parallel force with the woven material.

第18圖顯示一被大幅度彎曲但又不夠厚的CF運動球拍所產生的破裂。 Figure 18 shows the rupture of a CF sports racquet that is greatly curved but not thick enough.

第19圖係可鎖定扣環、孔洞與網線。 Figure 19 shows the lockable buckles, holes and wires.

第20圖係一吸收衝擊之運動球拍把手。 Figure 20 is a sports racket handle that absorbs shock.

第21A至21D圖係本發明固態金屬拍框之一較佳實施例。 21A to 21D are views showing a preferred embodiment of the solid metal frame of the present invention.

第22A圖係運動球拍面在拉線前的示意圖。 Figure 22A is a schematic view of the sports racquet face before the cable is pulled.

第22B圖係具有兩根直線的拍面，圖中誇張地顯示邊側的彎曲情形。 Fig. 22B is a plan view having two straight lines, and the curved side of the side is exaggeratedly shown.

第22C圖係具有兩根直線與兩根橫線的拍面，圖中顯示回復至原始拍面(a)。 Figure 22C is a face with two straight lines and two horizontal lines, the picture shows the return to the original face (a).

第23圖係網線設計的較佳實施例。 Figure 23 is a preferred embodiment of a network cable design.

第24圖顯示(a)單一拉緊(b)多重拉緊。 Figure 24 shows (a) single tensioning (b) multiple tensioning.

第25圖係釋放衝擊的簡單範例。 Figure 25 is a simple example of the release of impact.

第26圖係拉線平台的較佳實施例。 Figure 26 is a preferred embodiment of a cable drawing platform.

第27圖顯示在拉線平台下方之自動齒輪機構，該拉線台同時拉緊所有的網線。 Figure 27 shows the automatic gear mechanism below the cable platform, which pulls all the cables at the same time.

第28圖係一手提式拉線裝置。 Figure 28 is a hand-held cable pulling device.

第29圖係運動球拍參數的標注。 Figure 29 shows the labeling of the sports racket parameters.

第30圖係一直線及橫線張力相等，且近似矩形之運動球拍的甜蜜點。 Figure 30 is a sweet spot of the racquet with an equal motion of the straight line and the horizontal line.

第31圖係一直線及橫線震動頻率相等，且近似矩形之運動球拍的甜蜜點。 Figure 31 is a sweet spot of the racquet with an equal motion of the straight line and the horizontal line.

第32圖顯示大型正手(相等張力)甜蜜點。 Figure 32 shows a large forehand (equal tension) sweet spot.

第33圖係第32圖中涵蓋整個拍面的甜蜜點。 Figure 33 is a sweet spot covering the entire face in Figure 32.

第34A及34B圖顯示本發明之一新式鈦/碳纖維運動球拍，其中第34B圖係第34A圖中沿A-A線之截面圖。 Figures 34A and 34B show a novel titanium/carbon fiber sports racquet of the present invention, wherein Figure 34B is a cross-sectional view taken along line A-A of Figure 34A.

請參閱圖示，尤其是第1圖的先前技術。第1A圖顯示一矩形運動球拍或拍面或球拍頭部，均以編號10標示。幾乎成矩形或矩形之運動球拍10，其威力的性能是非常優越的。不過，運動球拍10具有一拍框11及四個角部12。角部12可在第1B圖與第1C圖中更清楚的顯示。角部12有十分小的曲率半徑，因此這些角部12必須彎曲成平直的四側14，而這些平直的四側14基本上無任何曲率，如第1D圖所示。此種結構會在網線已被拉緊之網球拍10的拍框內產生強大的內應力。 Please refer to the illustrations, especially the prior art of Figure 1. Figure 1A shows a rectangular sports racket or face or racket head, all numbered 10. Almost a rectangular or rectangular sports racquet 10, its power performance is very superior. However, the sports racket 10 has a frame 11 and four corners 12. The corners 12 can be more clearly shown in Figures 1B and 1C. The corners 12 have a very small radius of curvature, so these corners 12 must be bent into a straight four sides 14, and these flat four sides 14 are substantially free of any curvature, as shown in Figure 1D. This structure creates a strong internal stress in the frame of the tennis racket 10 in which the cable has been tensioned.

本發明揭露之新技術可用來製作可抵抗這些內應力而不會過於沈重的運動球拍。當一直樑具有彎曲的分節時，由施加之外力產生的內應力會在此分節中放大。例如，首先考慮一長度為1及矩形截面為h×b，且兩端固定的均勻直樑。如果在h方向沿著長度l施加一均勻外力F，則應力在兩端會最大。此最大應力為S=Flh/24I=Fl/2bh²其中，I=bh³/12係直樑截面的慣性力矩。如果該直樑不是平直的，而是兩端有曲形分節，則在曲率半徑r的分節中某點的應力，相較於上述直樑的應力值會增加一Q倍(應力集中)。該係數Q是r/h的函數：Q=Q(r/h)。當r/h值大時(大曲率)，Q會下降至1，而當r/h值小時(小曲率)，Q會非常大。r/h值介於中間時，Q值則由拍框材料與結構決定。Q的一些常見數值為：Q(1)=1.4，Q(3)=1.1，Q(5)=1.05。 The new technology disclosed by the present invention can be used to make a sports racquet that resists these internal stresses without being too heavy. When the beam has a curved section, the internal stress generated by the applied force is amplified in this section. For example, first consider a uniform straight beam having a length of 1 and a rectangular cross section of h x b and fixed at both ends. If a uniform external force F is applied along the length l in the h direction, the stress will be greatest at both ends. The maximum stress is S=Flh/24I=Fl/2bh ² where I=bh ³ /12 is the moment of inertia of the straight beam section. If the straight beam is not straight, but has curved sections at both ends, the stress at a point in the section of the radius of curvature r is increased by a factor of Q (stress concentration) compared to the stress value of the straight beam. This coefficient Q is a function of r/h: Q = Q(r/h). When the r/h value is large (large curvature), Q will drop to 1, and when the r/h value is small (small curvature), Q will be very large. When the r/h value is in the middle, the Q value is determined by the frame material and structure. Some common values for Q are: Q(1) = 1.4, Q(3) = 1.1, and Q(5) = 1.05.

由於應力加強的原因，本發明運動球拍雛形的角部不能為直角，如第1A圖所示。因為這會產生巨大的應力及導致破裂。因此之故，在角部有一些曲率是必要的，但是因為應力集中的因素，曲率愈小，相對於所需的直樑厚度，所需的厚度h則愈大。例如，運動球拍的直側需要h=0.5”的厚度來承受網線張力產生的應力，則角部的曲率半徑r至少需要：當h=0.55”時，r=1”；當h=0.52”時，r=2”；而當h=0.51”時，r=4”(這些非線性的結果係由軟體算出)。 Due to the stress enhancement, the corners of the prototype of the sports racquet of the present invention cannot be at right angles, as shown in FIG. 1A. Because this creates tremendous stress and causes cracking. Therefore, it is necessary to have some curvature at the corners, but because of the stress concentration factor, the smaller the curvature, the larger the required thickness h relative to the required straight beam thickness. For example, if the straight side of the sports racquet requires a thickness of h = 0.5" to withstand the stress generated by the tension of the wire, the radius of curvature r of the corner needs at least: when h = 0.55", r = 1"; when h = 0.52" When r = 2"; and when h = 0.51", r = 4" (the results of these nonlinearities are calculated by software).

如第1B圖所示，運動球拍圓形角部12必須在切線方向上與拍面直側相接，以避免更多的應力加強；而欲在切線方向上接合各邊側， 最簡單的角部曲線為第1B圖所示的橢圓象限。 As shown in FIG. 1B, the circular horn 12 of the sports racquet must be connected to the straight side of the racing direction in the tangential direction to avoid more stress reinforcement; and to join the sides in the tangential direction, The simplest corner curve is the elliptical quadrant shown in Figure 1B.

第1C圖為一有最小曲率的運動球拍面。這會需要非常厚的角部12，以及產生笨重且難看的運動球拍10。第1D圖為一具有較大曲率的拍面15。邊側18係向外彎曲，以便在裝上網線19後成為平直狀，如美國專利申請案61/436,259所揭露者。如果需要等長的網線，則角部曲率17必須愈大愈好，但此曲率仍然太小而無法避免需要厚的角部，及增加額外的重量。 Figure 1C shows a sports racquet face with minimal curvature. This would require a very thick corner 12 and a cumbersome and unsightly sports racquet 10. Figure 1D is a face 15 having a large curvature. The side 18 is bent outwardly to be flat after the attachment of the wire 19, as disclosed in U.S. Patent Application Serial No. 61/436,259. If an equal length of wire is required, the corner curvature 17 must be as large as possible, but the curvature is still too small to avoid the need for thick corners and additional weight.

第2圖顯示本發明之一卵形運動球拍或拍面20。拍面20具有一大型拍框21及在邊緣22有相當均勻的曲率。該拍框21大約1又1/4英尺長及10又3/4英吋寬。拍框21內的網線則大約佔1英尺長及9又1/2英吋寬的區域。拍框21的曲率，尤其是在角部22的曲率，可有助於製造強大、穩固及重量輕的成品。但此種運動球拍20的性能卻很差。此種相當均勻的曲率為圓形的曲線，因為其可提供足夠的強度。如第2圖所示，圓形角部22在軸向(或稱直線方向)上大約佔3英吋長，而在垂直於軸向(或稱橫線方向)的方向上大約為2又1/2英吋寬。請注意在直線方向上，離拍框邊側24有一1英吋的弧部，而離端部25則有1又1/2英吋的弧部。 Figure 2 shows an oval sports racquet or racquet 20 of the present invention. The face 20 has a large frame 21 and a relatively uniform curvature at the edge 22. The frame 21 is approximately 1 1/4 ft long and 10 3/4 ft wide. The cable in frame 21 is approximately 1 foot long and 9 1/2 inch wide. The curvature of the frame 21, particularly at the corners 22, can help to create a strong, stable and lightweight finished product. However, the performance of this sports racket 20 is very poor. This fairly uniform curvature is a circular curve because it provides sufficient strength. As shown in Fig. 2, the circular corner portion 22 is approximately 3 inches long in the axial direction (or linear direction) and approximately 2 in the direction perpendicular to the axial direction (or the horizontal direction). 1/2 inch wide. Please note that in the direction of the line, there is a 1 inch arc on the side 24 of the frame and a 1⁄2 inch arc from the end 25.

拍面角部22的曲率必須夠大到提供預期的強度及可玩性，但又需夠小到使受影響的網線26與未被影響的網線28在同一頻率下震動。要形成相等的震動頻率必須讓較短的網線承受較輕的張力，但這些較短的網線必須夠長到能承受適度的張力。 The curvature of the face 22 must be large enough to provide the desired strength and playability, but small enough to cause the affected wire 26 to vibrate at the same frequency as the unaffected wire 28. To form equal vibration frequencies, the shorter wires must be subjected to lighter tension, but these shorter wires must be long enough to withstand moderate tension.

為實作更大的角部曲率，本發明不要求所有的直線及所有的橫線皆為等長，而係要求在所有的直線與橫線皆有相等之震動頻率下仍具有相同的性能(網球拍的網線床對網球衝擊之反應是很複雜的，而且這會涉及到許多頻率的重疊。不過，在美國專利號6,344,006中揭露當基本(最低)頻率相同時，會有最佳的效能)。具有固定端部、長度為l、線性質量密度為m、且在張力t下之震動網線的頻率為 如果最長直線(長度l2)具有60磅的張力(t2)，而最短直線(長度l1)具 有40磅(一般最低可接受值)的張力(t1)，而且密度m固定，則最小可 接受的長度比l1/l2為=0.82。換句話說，l1不得小於l2的82%(若t2=70磅(一般最大可接受值)，則l1不得小於l2的76%)。 In order to implement a larger corner curvature, the present invention does not require that all straight lines and all horizontal lines be of equal length, and that it is required to have the same performance at all equal vibration frequencies of straight and horizontal lines ( The response of the tennis racquet's cable bed to tennis impact is complex, and this involves many overlapping frequencies. However, it is disclosed in U.S. Patent No. 6,344,006 that the best performance is obtained when the basic (lowest) frequencies are the same) . The frequency of the vibrating wire with fixed end, length l, linear mass density m, and tension t is If the longest straight line (length l2) has a tension of 60 pounds (t2) and the shortest straight line (length l1) has a tension (t1) of 40 pounds (generally the lowest acceptable value) and the density m is fixed, the minimum acceptable length Than l1/l2 is =0.82. In other words, l1 must not be less than 82% of l2 (if t2 = 70 pounds (generally the maximum acceptable value), then l1 must not be less than 76% of l2).

因此，對於可容許多少曲率是有限制的。太多曲率會使網線長度小於可接受的長度。選擇較短的網線以得到較高的密度及較低的張力會使網線更短。 Therefore, there is a limit to how much curvature can be tolerated. Too much curvature will cause the cable length to be less than an acceptable length. Choosing a shorter cable to get a higher density and lower tension will make the cable shorter.

第3圖係本發明之運動球拍面100。運動球拍面100具有一拍框110，該拍框110有足夠的角部曲率120，以提供穩定度但不需過厚的角部。運動球拍面100的曲率並不大到使較短網線承受的張力低到不可接受。在本發明之較佳實施例中，若以傳統的方式(纏繞在拍框110的外緣)拉緊網線130，則最長直線132的長度l2為13.25”，而最短直線134的長度l1則為12.5”。最長橫線136的長度k2為10.75”，而最短橫線138(最上及最下)的長度k1則為10.0”。曲形角部120的內徑為2.5”及3.0”。在這些數值下，長度比是可接受的(l1/l2=0.94，k1/k2=0.93)。因此，若長網線的張力是60磅，則最短直線的張力為53磅，而最短橫線的張力為52磅。同時，角部的曲率半徑比為r/h=2.5/0.625=4.0，故若球拍邊側的厚度為0.625”，則角部的厚度僅需0.650”，只增加0.025”。 Figure 3 is a sports racquet face 100 of the present invention. The sports racquet face 100 has a frame 110 that has sufficient corner curvature 120 to provide stability without excessively thick corners. The curvature of the sports racquet face 100 is not so large that the tension experienced by the shorter wire is unacceptably low. In a preferred embodiment of the invention, if the wire 130 is tensioned in a conventional manner (wound around the outer edge of the frame 110), the length l2 of the longest line 132 is 13.25", and the length l1 of the shortest line 134 is It is 12.5". The length k2 of the longest horizontal line 136 is 10.75", and the length k1 of the shortest horizontal line 138 (uppermost and lowermost) is 10.0". The curved corner portion 120 has an inner diameter of 2.5" and 3.0". At these values, the length ratio is acceptable (l1/l2=0.94, k1/k2=0.93). Therefore, if the tension of the long wire is 60 pounds, the tension of the shortest straight line is 53 pounds, and the tension of the shortest horizontal line is 52 pounds. At the same time, the radius of curvature of the corner is r/h = 2.5/0.625 = 4.0, so if the thickness of the side of the racket is 0.625", the thickness of the corner is only 0.650", only 0.025".

上述的較佳實施例可被製作成比前述的拍面輕很多。此重量的減輕係由於無厚角部及縮短周邊長度，而這兩者皆是因增加曲率使強度增強及縮短周邊所致。 The preferred embodiment described above can be made much lighter than the aforementioned face. This weight reduction is due to the absence of thick corners and shortened perimeter length, both of which are due to increased curvature for increased strength and reduced perimeter.

圓形角部120有另一優點，當網球員企圖以非水平的握拍方式打擊一低球時，這些圓形角部120會有助於順利擊球。 The rounded corner 120 has another advantage that these rounded corners 120 can aid in smooth hitting when a net player attempts to strike a low ball in a non-horizontal grip.

關於本發明揭露之具有較短網線的網球拍，且這些較短網線的張力低於較長網線者，審視拉線程序會有助益。在傳統的拉線程序中，單一網線係滑過扣環，再依序拉緊，以在等化處理後，在所有的直線及所有的橫線上產生大致相等的張力。若要在較短網線上產生較低的張力，這些網線必須以適當的結紮程序分別拉緊。更好的方式是使用下面討論到的可鎖定扣環(或LG)。 With regard to the tennis racquets of the present invention having shorter network cables, and the tension of these shorter network cables is lower than that of the longer network cables, it may be helpful to review the cable pulling procedure. In the conventional cable drawing procedure, a single cable slides over the buckle and is then tensioned in sequence to produce approximately equal tension on all of the straight lines and all of the transverse lines after the equalization process. To create a lower tension on a shorter network, these cables must be tightened separately with the appropriate ligation procedure. A better way is to use the lockable buckle (or LG) discussed below.

在運動球拍內讓網線具不同長度有更進一步的好處。提供拍 面不完全平行的長側可增加拍面的強度，因此可更減低其重量。此運動球拍面100之較佳實施例如第3圖所示。拍面的長側140係輕微地向內面向遠端150，相對於內短側的長度，可縮短外短側的長度。此構造可提供許多優點。首先，外短側或遠端150在本質上係較堅強(因為內應力與樑長成正比)，故可更薄及更輕些。內短側160從鄰近的喉部170取得額外的強度，因此它不需要像外側一樣短，也不需要太厚。第二點，外短側150可更輕些，因為樑重也是與樑長成正比。第三點，外短側150對長側140提供更多支持，因為這些長側140比較能抵抗彎曲。第四點，拍面邊側110、140、150及160，如圖所示具有拱形的幾何形狀，彼此互相支持。第五點，在外拍面區域內結束的直線及橫線130比較短，因此可承受較低的張力。所以，這些網線130可提供更大的威力，並將甜蜜點向這些網線延伸。第六點，較短及有較大弧度的外或遠端角部側122可提升可玩性以回擊低球。第七點，外短側150可提供較美觀的外型。 There are further advantages to having different lengths of the cable in the sports racket. Provide a shot The long sides that are not completely parallel can increase the strength of the face, thus reducing its weight. A preferred embodiment of the sports racquet face 100 is shown in FIG. The long side 140 of the face is slightly inwardly facing the distal end 150, and the length of the outer short side can be shortened relative to the length of the inner short side. This configuration offers many advantages. First, the outer short side or distal end 150 is inherently stronger (because the internal stress is proportional to the beam length), so it can be thinner and lighter. The inner short side 160 takes extra strength from the adjacent throat 170 so it does not need to be as short as the outside and not too thick. The second point, the outer short side 150 can be lighter, because the beam weight is also proportional to the beam length. Third, the outer short side 150 provides more support to the long side 140 because these long sides 140 are more resistant to bending. Fourth, the face sides 110, 140, 150, and 160, which have arched geometries as shown, support each other. Fifth, the straight line and the horizontal line 130 that end in the outer face area are relatively short, so that they can withstand lower tension. Therefore, these network cables 130 provide greater power and extend sweet spots to these network lines. Sixth, a shorter and more curved outer or distal corner side 122 can enhance playability to hit the low ball. Seventh, the outer short side 150 can provide a more aesthetic appearance.

綜合上述優點，本發明提供一具有足夠固有強度的運動球拍100，以允許使用各種可能的製作材料及產生非常輕的總重量。此重量的減輕係由以下之較佳拉線程序而達成者。 Combining the above advantages, the present invention provides a sports racquet 100 having sufficient inherent strength to allow for the use of various possible materials of fabrication and to produce a very light overall weight. This weight reduction is achieved by the following preferred cable pull procedure.

由於第3圖中運動球拍面100的形狀，幾乎所有的橫線(例如：134及136)都有不同的長度。因此，以傳統方式來對運動球拍100拉線，並使這些網線具有相同的震動頻率是不可能的。而欲達成此目的，則必須使用可鎖定扣環(或LG)。 Due to the shape of the sports racquet face 100 in Figure 3, almost all of the horizontal lines (e.g., 134 and 136) have different lengths. Therefore, it is impossible to pull the sports racquet 100 in a conventional manner and make these meshes have the same vibration frequency. To achieve this, a lockable buckle (or LG) must be used.

使用可鎖定扣環可個別設定網線張力，其中較短的網線接受較低的應力。使用可鎖定扣環可簡化此工作，還有其他的原因。我們可選擇在網線孔中置放各可鎖定扣環的位置，使得在網線孔中固定網線的點為最適當的。因此，較短網線134及138可被夾置在靠近拍框的外緣，使得這些網線長一些，而較長網線132及136則可短一些。以此方式，在設定對應的張力前，網線長度可以幾乎相同。此種安排需要將可鎖定扣環與拍框整合在一起，以產生一全新的運動球拍，以及新的運動球拍設計與拉線方法。此方法如下述。 The cable tension can be individually set using a lockable buckle, where the shorter wire accepts lower stress. Using a lockable buckle simplifies this and there are other reasons. We can choose to place the position of each lockable buckle in the cable hole, so that the point of fixing the network cable in the cable hole is the most appropriate. Thus, the shorter mesh wires 134 and 138 can be sandwiched near the outer edge of the frame such that the wires are longer and the longer wires 132 and 136 can be shorter. In this way, the length of the wire can be almost the same before the corresponding tension is set. This arrangement requires the integration of the lockable buckle with the frame to create a brand new sports racquet, as well as a new sports racquet design and cable pull method. This method is as follows.

上述的討論限於運動球拍在拍面平面上的形狀，但拍框或拍 面的截面也一樣重要。矩形截面比傳統管狀截面的優點在美國專利申請案號61/436,259中揭露。其他更有效的截面則如下所述。 The above discussion is limited to the shape of the sports racquet on the plane of the face, but the frame or beat The cross section of the face is also important. The advantages of a rectangular cross section over a conventional tubular cross section are disclosed in U.S. Patent Application Serial No. 61/436,259. Other more effective cross sections are as follows.

所有討論過的運動球拍雛形已經建構出來了。一些雛形則如第4A至4E圖所示。 All the prototypes of the sports racquets that have been discussed have been constructed. Some prototypes are shown in Figures 4A through 4E.

第4A圖顯示一具有方形角部210之碳纖維(或CF)運動球拍200。運動球拍200必須非常重才不會破裂。第4B圖顯示一具有橢圓形角部230的碳纖維運動球拍220。此仍然嫌重的運動球拍220在拉線前係具有平行的邊側235，不過，請注意在拉線後，邊側向內彎曲的方式，如第4B圖所示。如第4C圖所示的碳纖維運動球拍雛形240具有稍微成圓形的角部250，因此角部會很厚。在周緣附近的截面255具有Kevlar(或譯凱夫勒、凱庫勒、功夫龍，是美國杜邦公司於1965年所發明一項芳香聚醯胺類合成纖維的商標名稱，材料名為-聚對苯二甲醯對苯二胺)外殼，以定位扣環並防止損害運動球拍240。此網線未被拉緊的運動球拍具有向外彎曲的邊側245，而在運動球拍的網線被拉緊後，這些邊側245會變成平直的。第4D圖顯示網線被拉緊的運動球拍240。第4E圖則為上述較佳實施例的網球拍雛形之CAD(電腦輔助設計)圖。 Figure 4A shows a carbon fiber (or CF) sports racquet 200 having a square corner 210. The sports racket 200 must be very heavy to not break. Figure 4B shows a carbon fiber sports racquet 220 having an elliptical corner 230. This still heavy sports racket 220 has parallel sides 235 in front of the pull wire, however, please note that the side bends inward after the wire is pulled, as shown in Fig. 4B. The carbon fiber sports racquet prototype 240 as shown in Fig. 4C has a slightly rounded corner portion 250, so that the corner portion is thick. The section 255 near the circumference has Kevlar (or Kevlar, Kekule, Kungfu, which is the trade name of an aromatic polyamine synthetic fiber invented by DuPont in 1965, the material name is - poly-p-benzene. The dimethylhydrazine p-phenylenediamine) shell is positioned to retain the buckle and prevent damage to the sports racquet 240. The unstrained sports racquet of the cable has an outwardly curved side 245 which becomes flat after the network of the sports racquet is tensioned. Figure 4D shows a sports racquet 240 with the cable being taut. Fig. 4E is a CAD (Computer Aided Design) diagram of the prototype of the tennis racket of the above preferred embodiment.

第5A-5C、6A-6D、7A-7D、8A-8C、11A-11C、12A-12C、13A-13E、及14A-14B圖顯示本發明可鎖定扣環(或LG)之較佳實施例。可鎖定扣環會堅強到固定網線至最高70磅的張力，但又夠輕到不影響球拍重量或平衡。扣環容易固定在拍框內，而網線則容易固定在扣環內。可鎖定扣環會將網線鎖入定位，使其牢固而不會滑動，但該鎖定扣環並不會穿入網線以減低其強度。 5A-5C, 6A-6D, 7A-7D, 8A-8C, 11A-11C, 12A-12C, 13A-13E, and 14A-14B show a preferred embodiment of the lockable buckle (or LG) of the present invention . The lockable buckle will be strong enough to hold the cable up to a tension of up to 70 pounds, but light enough to not affect the weight or balance of the racket. The buckle is easily fixed in the frame, and the cable is easily fixed in the buckle. The lockable buckle locks the cable into place so that it does not slip, but the locking clasp does not penetrate the cable to reduce its strength.

欲在各網線上提供預期的張力，技術上可鎖定扣環會以一體成型的方式納入運動球拍。要能在拍面內的較短網線上維持相等的網線震動頻率，必須使用可鎖定扣環。可鎖定扣環必須足夠堅強到固定網線至最高70磅張力，但又夠輕到不會影響球拍重量與平衡。扣環必須容易固定在拍框內，而網線則必須容易固定在扣環內。可鎖定扣環必須將網線鎖入定位，使其牢固而不會滑動，但該鎖定扣環必須不能穿入網線以減低其強度。本發明揭露該可鎖定扣環之較佳實施例。 To provide the desired tension on each cable, the technically lockable buckle is incorporated into the sports racquet in a one-piece fashion. To be able to maintain an equal line vibration frequency on a shorter network within the face, a lockable buckle must be used. The lockable buckle must be strong enough to hold the cable up to a maximum of 70 pounds of tension, but light enough that it does not affect the weight and balance of the racket. The buckle must be easily fixed in the frame, and the cable must be easily fixed in the buckle. The lockable buckle must lock the cable in place so that it does not slip, but the locking clasp must not penetrate the cable to reduce its strength. The present invention discloses a preferred embodiment of the lockable buckle.

如第5A至5C圖所示，扣環500係一段具有中心孔510(讓網線通過)及圓形頭部520之錐形開縫金屬。孔洞接納段511具有三個分節，包括內分節(面對網線床)512、圓柱形的外(螺紋)分節或外孔514、以及錐形之中央連結段516。網線係以一內凹的頭部鎖入外孔514的方式***扣環及一螺紋柱體519。因為在拉緊網線後鎖入此柱體(例如使用一把叉形螺絲起子)，以將扣環500向前推入中心錐形孔段516，此扣環結構會將扣環壓向被***的網線，並將扣環鎖定。除了使用螺紋孔段外，另一種方式是使用一外螺紋支撐元件，如第8圖所示。 As shown in Figures 5A through 5C, the buckle 500 is a section of tapered metal having a central aperture 510 (passing the wire) and a rounded head 520. The hole receiving section 511 has three sections including an inner section (facing the screen bed) 512, a cylindrical outer (thread) section or outer hole 514, and a tapered central joint section 516. The wire is inserted into the buckle and a threaded cylinder 519 in such a manner that a concave head locks into the outer hole 514. Because the cylinder is locked after tightening the wire (for example, using a fork-shaped screwdriver) to push the buckle 500 forward into the central tapered hole section 516, the buckle structure will press the buckle against Insert the network cable and lock the buckle. In addition to the use of threaded holes, another way is to use an externally threaded support element, as shown in Figure 8.

如第6A至6D圖所示，扣環洞510接納一圓柱形且具有一偏心軸525的凸輪522。在***及拉緊網線之後，將凸輪522轉動使其推動網線並將其定位。此機構是自動修正的。若網線被向內拉動(例如與網球碰觸)，它會開始轉動凸輪522，使凸輪更壓縮及拉緊該網線。 As shown in Figures 6A through 6D, the buckle hole 510 receives a cam 522 that is cylindrical and has an eccentric shaft 525. After inserting and tightening the wire, the cam 522 is rotated to push the wire and position it. This institution is automatically corrected. If the cable is pulled inward (e.g., in contact with a tennis ball), it will begin to rotate the cam 522, causing the cam to compress and tighten the cable.

如第7A至7D圖所示，一兩件式套管型扣環540具有一內部541及一外部544。該內部541為一具有外凸面543的碟片542，而該外部544則為一具有內凹面545之錐形段。中央扣環之外部為一具有錐形內凹壓痕547之柱體546。在網線被***扣環540之中心孔及緊固柱體548，並接著被拉緊後，扣環的兩個組件541及544被推在一起並推入緊固柱體548中。這兩個扣環組件541及544則被夾置在網線上。外部544被夾置是因為其狹窄的端部被推入緊固柱體548的錐形壓痕，而內部541被夾置是因為其外凸之狹窄端部被推入外部544內側上的內凹壓痕。此種網線鎖定機構特別有效，因其將網線夾置在兩個不同位置。此種方式會增加網線的整體固定能力，並因其會分散外力，故對網線有較少的侵入。 As shown in Figures 7A through 7D, a two-piece sleeve type buckle 540 has an interior 541 and an outer portion 544. The inner portion 541 is a disc 542 having a convex surface 543, and the outer portion 544 is a tapered portion having a concave surface 545. The outer portion of the center buckle is a cylinder 546 having a tapered concave indentation 547. After the wire is inserted into the center hole of the buckle 540 and the fastening post 548, and then tensioned, the two components 541 and 544 of the buckle are pushed together and pushed into the fastening cylinder 548. The two buckle assemblies 541 and 544 are then sandwiched on the wire. The outer portion 544 is sandwiched because its narrow end is pushed into the tapered indentation of the fastening cylinder 548, and the inner portion 541 is sandwiched because the narrow end of its convexity is pushed into the inner side of the outer portion 544. Concave indentations. Such a cable locking mechanism is particularly effective because it clamps the cable in two different positions. This method will increase the overall fixing capacity of the network cable, and because it will disperse external forces, it has less intrusion into the network cable.

如第8A至8C圖所示，此扣環550像第7C圖之LG3一樣，對網線提供兩種不同的夾置方式。扣環550具有一內端部551及一外端部553。內端部551及外端部553均為錐形之外凸金屬段。緊固孔554在一向內之小圓柱段556及一向外之大圓柱段557之間有一內凹的錐形段555。向外的分段具有螺紋以螺接一具有內凹錐形壓痕之螺紋夾置柱體558。該螺紋夾置柱體558則如第9C圖所示。在網線被***扣環中心孔及該螺紋夾置柱體558，並接著被拉緊後，該柱體558被螺接至緊固孔中。由於此柱體558 轉向扣環550之向外端部，它會將此端部夾置在網線上。同時，轉動中的柱體558其向內的運動會將扣環550之向內端部推入緊固孔之內凹錐形部中。這會使得此扣環的端部夾置在網線上。其最終結果是網線被雙重夾置，網線固定能力增加，及網線上的平衡力被分散。 As shown in Figures 8A through 8C, the buckle 550 provides two different clamping methods for the cable as in the LG3 of Figure 7C. The buckle 550 has an inner end 551 and an outer end 553. The inner end portion 551 and the outer end portion 553 are both tapered outer metal segments. The fastening hole 554 has a concave tapered section 555 between an inwardly small cylindrical section 556 and an outwardly large cylindrical section 557. The outward segment has threads to thread a threaded clamping cylinder 558 having a concave tapered indentation. The thread clamping cylinder 558 is as shown in Fig. 9C. After the wire is inserted into the center hole of the buckle and the thread clamps the cylinder 558 and is then tensioned, the cylinder 558 is screwed into the fastening hole. Due to this cylinder 558 The outer end of the steering buckle 550 is clamped to the wire. At the same time, the inward movement of the rotating cylinder 558 pushes the inward end of the buckle 550 into the concave tapered portion of the fastening hole. This causes the end of the buckle to be placed on the wire. The net result is that the network cable is double-clamped, the network cable fixing ability is increased, and the balance force on the network cable is dispersed.

此外，一將扣環壓至網線620之較佳裝置為第10圖所示之外驅動裝置600，其為本發明拉線裝置的一部份。網線620係經由一外螺紋夾置柱體600而被***一雙錐形扣環之中心孔，及一垂直之拉緊柱體595。此螺紋夾置柱體600係被螺接入一外部固定元件之螺孔。運動球拍固定夾置器(未顯示在圖中)、拉緊柱體595、以及固定元件(未顯示在圖中)皆剛性地附接在一固定平台900，如第26圖所示。外螺紋夾置柱體600具有相同的內凹錐形壓痕，以做為第9C圖所示之內柱體558。安裝網線的第一個步驟是轉動拉緊柱體595，直到網線得到預期的張力。達成此步驟的較佳方式是將一扭力扳手***一位於拉緊柱體595頂部的接納孔596。若此扳手被設定成在對應於預期網線張力之扭力下發生滑動，則此預期的張力會被賦予網線620。 In addition, a preferred device for pressing the buckle to the wire 620 is the drive device 600 shown in FIG. 10, which is part of the wire drawing device of the present invention. The wire 620 is inserted into the center hole of a double tapered buckle via an externally threaded clamping cylinder 600, and a vertical tensioning cylinder 595. The threaded clamping cylinder 600 is threaded into a screw hole of an external fixing member. A sports racquet fixing clip (not shown), a tensioning cylinder 595, and a fixing member (not shown) are rigidly attached to a fixed platform 900, as shown in Fig. 26. The externally threaded clamping cylinder 600 has the same concave tapered indentation as the inner cylinder 558 shown in Fig. 9C. The first step in installing the cable is to turn the tensioning cylinder 595 until the cable is in the desired tension. A preferred way to achieve this is to insert a torque wrench into a receiving aperture 596 at the top of the tensioning cylinder 595. If the wrench is set to slip under a torque corresponding to the expected cable tension, this expected tension will be imparted to the wire 620.

第二步驟是將螺紋柱體轉入螺紋固定元件，使其內凹錐形壓痕向前移動至扣環的向外端部。隨著此前向運動，扣環的兩個端部會如上述方式夾置在網線上。此夾置機構比上述機構優異的一點是，可不需對扣環的緊固孔加上螺紋。這會降低拍面所需的強度及重量。另一項優點是，可以一次對所有的網線施以張力。 The second step is to rotate the threaded cylinder into the threaded retaining element with its concave tapered indentation moving forward to the outward end of the buckle. With the previous movement, the two ends of the buckle are sandwiched on the wire as described above. The advantage of this clamping mechanism over the above mechanism is that it does not require the threading of the fastening holes of the buckle. This will reduce the strength and weight required for the face. Another advantage is that tension can be applied to all cables at once.

如第11A至11C圖所示，扣環700亦提供兩種夾置網線的方式，並亦包括兩個部分。第一部份710係朝內，且為一錐形物，其直徑係緩慢逐漸放大至其外端部，具有一中央孔及小外徑。第二部分720為一錐形物，其直徑逐漸放大至其外端部。接納或緊固孔750分為三段。內分段760係一小直徑的圓柱體。中分段770為一錐形物，其直徑逐漸放大至其外端部。外分段780為一大直徑的圓柱體。扣環700係藉著如第8C圖可鎖定扣環550或LG4的機構之一，而被推入內孔段，亦即將螺紋柱體螺入具螺紋的外緊固孔段中，或螺入在外固定元件之螺孔內。當扣環700被推入接納孔之錐形中段時，若已適當地選定所有相關的角度，則其第一及第二 部分710、720會各自被夾置在網線上。 As shown in Figures 11A through 11C, the buckle 700 also provides two ways of sandwiching the cable and also includes two portions. The first portion 710 is inwardly facing and is a cone whose diameter is gradually enlarged to its outer end with a central aperture and a small outer diameter. The second portion 720 is a cone whose diameter is gradually enlarged to its outer end. The receiving or fastening hole 750 is divided into three sections. The inner segment 760 is a small diameter cylinder. The midsection 770 is a cone whose diameter is gradually enlarged to its outer end. Outer segment 780 is a large diameter cylinder. The buckle 700 is pushed into the inner hole section by one of the mechanisms for locking the buckle 550 or LG4 as shown in FIG. 8C, that is, the threaded cylinder is screwed into the threaded outer fastening hole section, or screwed into In the screw hole of the outer fixing element. When the buckle 700 is pushed into the tapered middle section of the receiving hole, if all relevant angles have been properly selected, then the first and second Portions 710, 720 are each sandwiched on a network line.

如第12A至12C圖所示，扣環800係類似第8圖之可鎖定扣環550(LG4)，但角度不同，且緊固孔850之錐形部860比較長。此處該錐形段860係用來壓縮扣環800之內凸端部810，並亦幫助將扣環800之外凸端部820壓向網線。扣環800係藉著如上述第8C圖可鎖定扣環550或LG4的機構之一而被推入此分段，亦即將螺紋柱體螺入具螺紋的外緊固孔段中，或螺入在外固定元件之螺孔內。該柱體將扣環800推入緊固孔850之錐形部860，使扣環800的兩端夾置在網線上。柱體中的內凹錐形壓痕則進一步將扣環800之外端部壓至網線。此種雙夾置機構可牢牢地及平衡地固定被***的網線。 As shown in Figures 12A through 12C, the buckle 800 is similar to the lockable buckle 550 (LG4) of Figure 8, but at different angles, and the tapered portion 860 of the fastening hole 850 is relatively long. Here, the tapered section 860 is used to compress the male end 810 of the buckle 800 and also to urge the male end 820 of the buckle 800 against the wire. The buckle 800 is pushed into the segment by one of the mechanisms of the lockable buckle 550 or LG4 as shown in the above section 8C, that is, the threaded cylinder is screwed into the threaded outer fastening hole section, or screwed into In the screw hole of the outer fixing element. The cylinder pushes the buckle 800 into the tapered portion 860 of the fastening hole 850 so that both ends of the buckle 800 are sandwiched on the mesh. A concave tapered indentation in the cylinder further presses the outer end of the buckle 800 to the wire. This double clamping mechanism securely and balancedly secures the inserted wire.

如第13A至13E圖所示，緊固孔950係類似第11B圖之可鎖定扣環700(或LG5)中的緊固孔750。該緊固孔950分成三段。內分段960為一小直徑的圓柱體。中分段970為錐形物，其直徑係逐漸放大至其外端部。外分段980為一大直徑之圓柱體。可鎖定扣環900包括三根適當尺寸的網線920，及在中央錐形孔段中對稱分佈在網線920周圍的負載球910。此種結構為自動鎖定。將網線朝著網線床向內拉動，會將負載球910緊緊地固定在網線上。 As shown in Figures 13A through 13E, the fastening holes 950 are similar to the fastening holes 750 in the lockable buckle 700 (or LG5) of Figure 11B. The fastening hole 950 is divided into three segments. Inner segment 960 is a small diameter cylinder. The middle section 970 is a cone whose diameter is gradually enlarged to its outer end. Outer segment 980 is a large diameter cylinder. The lockable buckle 900 includes three suitably sized mesh wires 920 and load balls 910 symmetrically distributed around the mesh wires 920 in the central tapered bore segments. This structure is automatically locked. Pulling the cable inward toward the cable bed will tightly secure the load ball 910 to the cable.

如第14A圖所示，扣環1000為一箍式止動套筒，其係在網線***拍框孔之前夾置在網線的適當位置。網線拉緊步驟如第14A圖所示。網線1010先***左拍框孔1020，接著***一開槽式的固定螺釘1030(螺紋柱體)及扣環1000，最後***有螺紋的右拍框孔1040。扣環1000夾置在網線1010上的位置使得將網線從右拉入拍框孔1040後，提供適當的網線張力。當網線1010固定在預期的張力後，固定螺釘1030螺入右螺孔1050，直到該螺釘1030碰到被夾置的扣環1000，此時該扣環1000會被定位。此種設計的重要優點是只須旋入或旋出固定螺釘1030，即可調整網線張力。 As shown in Fig. 14A, the buckle 1000 is a hoop type stop sleeve which is placed at an appropriate position of the wire before the wire is inserted into the frame hole. The cable tensioning step is as shown in Figure 14A. The network cable 1010 is first inserted into the left frame hole 1020, then a slotted fixing screw 1030 (threaded cylinder) and the buckle 1000 are inserted, and finally the threaded right frame hole 1040 is inserted. The position of the buckle 1000 on the wire 1010 is such that after the wire is pulled from the right into the frame hole 1040, an appropriate wire tension is provided. After the wire 1010 is fixed at the desired tension, the set screw 1030 is screwed into the right screw hole 1050 until the screw 1030 hits the clamped buckle 1000, at which time the buckle 1000 is positioned. An important advantage of this design is that the tension of the cable can be adjusted by simply screwing in or unscrewing the set screw 1030.

第14B圖的下半部顯示拉線後扣環1000及固定螺釘1030的放大圖。第14B圖的上半部則為另一種設計。在後者的設計中，被夾置的扣環1000係在中空固定螺釘1030內，使得藉由將適當的工具(如右側所示)***緊固孔並旋轉的方式從拍框的外側旋轉固定螺釘來調整網線張力。 The lower half of Fig. 14B shows an enlarged view of the rear buckle 1000 and the fixing screw 1030. The upper half of Figure 14B is another design. In the latter design, the clamped snap ring 1000 is attached within the hollow set screw 1030 such that the set screw is rotated from the outside of the frame by inserting a suitable tool (as shown on the right) into the fastening hole and rotating it. To adjust the tension of the cable.

使用可鎖定扣環還有另一項重要的優點。對以傳統方式拉線的運動球拍，當一條網線斷裂時，所有與其連結的網線都失去其張力，而該運動球拍基本上就不能用了。在比賽中使用破網線斷裂的運動球拍幾乎每一次都會丟分。如本發明之裝置有可鎖定扣環的網球拍，單一網線的斷裂只會稍微降低網球拍的可用性，因為這不會影響其他的網線。 There are another important advantages to using a lockable buckle. For a sports racquet that is pulled in a conventional manner, when a network cable breaks, all the mesh wires connected thereto lose their tension, and the sports racquet is basically unusable. In the game, the sports racquet with a broken mesh cable will lose points almost every time. If the device of the present invention has a tennis racquet that can lock the buckle, the breakage of the single cable will only slightly reduce the usability of the tennis racquet, as this will not affect other cables.

本發明亦揭露一些拍框材料之較佳實施例，此種材料包括一種金屬拍框，如7050鋁合金或鈦，除了一種特殊的鈦/碳纖維拍頭外，係用於所有的實施例，理由如下。首先，金屬拍框可輕易地接納需用來固定可鎖定扣環之刻蝕凹穴。其次，金屬拍框可提供堅固但重量輕的角部。以每一盎司的強度而言，碳纖維(CF)較佳，但其強度係與織料方向垂直。對於運動球拍拍框而言，由網線張力造成的力大多是與織料方向平行，因此需要較重的碳纖維段來維持穩定性，即使在拍面的角部。金屬在所有方向都一樣強固，所以碳纖維的優點被大大的否定了。其次，將可鎖定扣環固定在碳纖維的拍框上會更困難且需要更多重量。 The present invention also discloses preferred embodiments of some of the frame materials, such as a metal frame, such as 7050 aluminum alloy or titanium, which is used in all embodiments except for a special titanium/carbon fiber head. as follows. First, the metal frame can easily receive the etch pockets that need to be used to secure the lockable buckle. Second, the metal frame provides a solid but lightweight corner. Carbon fiber (CF) is preferred in terms of strength per ounce, but its strength is perpendicular to the direction of the fabric. For the sports racquet frame, the force caused by the tension of the wire is mostly parallel to the direction of the woven fabric, so a heavier carbon fiber segment is required to maintain stability, even at the corners of the face. The metal is as strong in all directions, so the advantages of carbon fiber are greatly negated. Secondly, it is more difficult and requires more weight to secure the lockable buckle to the carbon fiber frame.

第三點，我們可以從一片金屬板切割出金屬拍框，同時在垂直於網線床的方向上***大孔。對於減輕拍框的重量，這些孔是必要的，但它們也同時降低揮拍時碰到的空氣阻力，故使得網球拍可以被揮的更快以及有更多的控制。第四點，金屬拍框可輕易地納入震動控制機構以有效地消除所有因與網球碰撞而引起的惱人的低頻震波。 Thirdly, we can cut out the metal frame from a piece of metal plate and insert a large hole in the direction perpendicular to the wire bed. These holes are necessary to reduce the weight of the frame, but they also reduce the air resistance encountered during the swing, so that the tennis racket can be swiftly swept faster and with more control. Fourth, the metal frame can be easily incorporated into the vibration control mechanism to effectively eliminate all annoying low frequency shock waves caused by collision with the tennis ball.

幾乎所有當代的運動球拍都是用以碳纖維為基準之複合材料來製造的。其理由是運動球拍必須要堅固以承受網線對拍框施加的超過2000磅的力，但也必須要輕便以能容易握住及揮動。因為碳纖維相較其他可用材料有大得多的強度重量比，所以過去三十年來它一直是網球拍材料的當然之選。 Almost all contemporary sports racquets are made from carbon fiber-based composites. The reason is that the sports racquet must be strong enough to withstand more than 2000 pounds of force applied to the frame by the cable, but it must also be lightweight to be easily grasped and swung. Because carbon fiber has a much greater strength-to-weight ratio than other available materials, it has been the natural choice for tennis racket materials for the past three decades.

不過，除了一種特殊的鈦/碳纖維拍頭之外，此種材料並非最佳之選，這有兩個原因。第一，目前需要大曲度的角部以維持平直且幾乎平行的邊側。第二，我們需要使用可鎖定扣環在各網線上產生各自的張力以維持相等的震動頻率。當考慮這兩個需求時，碳纖維就不是最佳的材料了，而鋁或鈦才是製造拍框的最佳金屬。 However, in addition to a special titanium/carbon fiber head, this material is not the best choice for two reasons. First, corners of large curvature are currently required to maintain a straight and nearly parallel side. Second, we need to use the lockable buckle to create the respective tension on each wire to maintain an equal vibration frequency. When considering these two requirements, carbon fiber is not the best material, and aluminum or titanium is the best metal for making frames.

就每盎司的強度而言，碳纖維預力聚合物表現非常好，但只在垂直於碳纖維織料的方向上。傳統的管狀碳纖維網球拍拍框有較溫和的局部曲度(曲率半徑大)，因此由被拉緊之網線對拍框的施力主要垂直於碳纖維織料的方向。如第15圖所示之一拍框截面，其網線施力方向如箭頭所示。因此，這些拍框可被製作的非常輕。這對於美國專利申請案號61/436,259所揭露之碳纖維夾層板的拍框邊側而言也是相同的，如第16圖所示。不過，本發明之近似矩形的拍框，其角部曲率是非常陡峭(曲率半徑小)的，故網線張力能在角部內產生與織料平行的施力也很大，如第17圖所示。網線對其二鄰側的施力(如箭頭1)，使得這些邊側向內彎曲，而這會沿著碳纖維織料的方向產生強大的切線力(如箭頭2)。這些切線力會壓縮角部的內側及延伸其外側。因為碳纖維在這些切線方向上並不堅強，故需要厚重的角部來支撐這些力並防止破裂，如第1D圖所示(在不夠厚且具有大曲度之碳纖維運動球拍角部開頭之破裂情形則如第18圖所示)。再一次的，這些缺點會在以下之特殊鈦/碳纖維組合式運動球拍拍頭的討論中提及。 Carbon fiber pre-polymers perform very well in terms of strength per ounce, but only in a direction perpendicular to the carbon fiber weave. The conventional tubular carbon fiber tennis racquet frame has a mild local curvature (large radius of curvature), so the force applied by the tensioned wire to the frame is mainly perpendicular to the direction of the carbon fiber woven fabric. As shown in Fig. 15, one of the cross-sections of the frame is oriented as indicated by the arrow. Therefore, these frames can be made very lightly. This is also the same for the side of the frame of the carbon fiber sandwich panel disclosed in U.S. Patent Application Serial No. 61/436,259, which is incorporated herein by reference. However, in the approximately rectangular frame of the present invention, the corner curvature is very steep (the radius of curvature is small), so that the tension of the wire can produce a force parallel to the woven material in the corner portion, as shown in Fig. 17. The force applied to the two adjacent sides of the wire (as indicated by arrow 1) causes the sides to bend inwardly, which creates a strong tangent force in the direction of the carbon fiber weave (eg arrow 2). These tangential forces compress the inside of the corner and extend the outside. Because carbon fibers are not strong in these tangential directions, thick corners are required to support these forces and prevent cracking, as shown in Figure 1D (in the case of cracks at the beginning of the corners of a carbon fiber sports racquet that is not thick enough and has a large curvature) As shown in Figure 18). Again, these shortcomings are mentioned in the discussion of the following special titanium/carbon fiber combined sports racquets.

不同於碳纖維的是，金屬是均質化且具有等向性。因此，金屬在所有方向都一樣堅強。所以，由金屬製造的球拍角部不需特別厚重，只要其曲率不太大(如前所述之若半徑厚度比(r/h)大於4，則應力集中係數基本上為1)。對於碳纖維球拍而言，即使對更溫和的曲率，角部的應力都有可能造成破裂，因為碳纖維在與織料平行的方向上強度不足。因此，近似矩形的金屬拍框在重量上是比碳纖維拍框有競爭力。 Unlike carbon fiber, the metal is homogenized and isotropic. Therefore, the metal is as strong in all directions. Therefore, the racquet corner made of metal does not need to be particularly heavy as long as its curvature is not too large (as described above, if the radius-thickness ratio (r/h) is greater than 4, the stress concentration factor is substantially 1). For a carbon fiber racquet, even for a milder curvature, the stress at the corners may cause cracking because the carbon fibers are insufficient in strength in a direction parallel to the woven fabric. Therefore, an approximately rectangular metal frame is more competitive in weight than a carbon fiber frame.

使用金屬而非碳纖維拍框的第二個優點是，金屬拍框可更輕易及均勻地接納可鎖定扣環。將可鎖定扣環納入由碳纖維或其他複合材料製造的拍框是可行的，但這並不常見。對金屬拍框，可鎖定扣環可成為運動球拍整體的一部份。在較佳實施例中，拍框-扣環系統是視為一個整體。拍框是被設計成一整合性的拍面-喉部-握把-扣環實體。易言之，扣環不會被當成是***拍框的管體，而是運動球拍的重要部分之一。 A second advantage of using a metal instead of a carbon fiber frame is that the metal frame can more easily and evenly receive the lockable buckle. It is possible to incorporate a lockable buckle into a frame made of carbon fiber or other composite materials, but this is not common. For metal frame, the lockable buckle can be part of the overall motion racquet. In the preferred embodiment, the frame-and-loop system is considered to be a unitary body. The frame is designed as an integrated face-throat-grip-ring body. In other words, the buckle will not be regarded as the tube inserted into the frame, but one of the important parts of the sports racket.

如前述，本發明有一實施例是不同於前面關於碳纖維運動球拍的討論內容，這就是第34A及34B圖所示之特殊拍頭。在此實施例中，運動球拍拍頭2000係由許多鈦柱體或核心A構成。柱體A上面有一碳纖維 織料或布料B，而碳纖維織料B則最好是由碳纖維構成，其上並有一層Kevlar。不過，碳纖維織料B應該可以完全由碳纖維或Kevlar碳纖維構成。一條(或一束)鈦金屬C將柱體A固定在織料B中。如第34B圖所示，網線D穿過核心A、一部份的織料B與C層，以及扣環E。應注意的是，每根網線使用兩個核心A。基於上述的種種優點，此種運動球拍應可克服前述碳纖維拍頭的缺點。 As described above, an embodiment of the present invention is different from the previous discussion regarding the carbon fiber sports racquet, which is the special head shown in Figs. 34A and 34B. In this embodiment, the athletic racquet head 2000 is constructed of a plurality of titanium cylinders or cores A. There is a carbon fiber on the cylinder A The woven or cloth B, and the carbon fiber woven fabric B is preferably made of carbon fiber and has a layer of Kevlar thereon. However, carbon fiber woven fabric B should be composed entirely of carbon fiber or Kevlar carbon fiber. One (or one bundle) of titanium metal C secures the cylinder A in the fabric B. As shown in Fig. 34B, the network cable D passes through the core A, a portion of the fabric B and C layers, and the buckle E. It should be noted that each core cable uses two cores A. Based on the above advantages, such a sports racket should overcome the disadvantages of the aforementioned carbon fiber beats.

無論是使用何種可鎖定扣環，將其納入金屬拍框是有好處的。金屬的等向性強度可牢牢固定住可鎖定扣環，並可有較大範圍的固定凹穴。金屬拍框可被輕易地加上螺紋及更改形狀以容納任何預期的可鎖定扣環。 Regardless of which lockable clasp is used, it is advantageous to incorporate it into the metal frame. The isotropic strength of the metal securely holds the lockable buckle and has a wide range of fixed pockets. The metal frame can be easily threaded and shaped to accommodate any desired lockable buckle.

若將可鎖定扣環納入碳纖維拍框，則需要金屬凹穴以安置這些可鎖定扣環，而這會大大地增加球拍的重量與複雜性。對金屬球拍而言，扣環凹穴可為拍框的一部份，因此不需增加額外的重量。將這些因素一起考量在內，因較薄的角部及整合式的鎖定扣環而減少的重量會使得金屬製的近似矩形且帶有可鎖定扣環的拍框與強度相等的碳纖維拍框一樣輕或甚至更輕。同時，使用下述的拉線步驟可更進一步減輕重量。 If a lockable buckle is incorporated into the carbon fiber frame, metal recesses are needed to accommodate these lockable buckles, which greatly increases the weight and complexity of the racket. For metal racquets, the buckle pocket can be part of the frame, so no additional weight is required. Taking these factors into consideration, the reduced weight due to the thinner corners and the integrated locking clasp will result in a metal-like approximately rectangular frame with a lockable clasp and a carbon fiber frame of equal strength. Light or even lighter. At the same time, the weight reduction can be further reduced by using the wire drawing step described below.

除了前述的討論之外，使用金屬拍框還有其他進一步的好處。其中之一是，可改進符合空氣動力學的外型。本發明之拍框的較佳實施例是由一鋁片構成。此拍框在***扣環之區域必須維持其硬度，但在這些區域之間則切割出大的橫向孔以減輕拍框的重量。此種結構顯示在第15圖，其中由被拉緊之網線對拍框的施力主要是垂直於碳纖維織料的方向。第15圖顯示一拍框截面，其網線施力方向則如箭頭所示。因此之故，這些拍框可以製作的非常輕。這對於美國專利申請案號61/436,259所揭露之碳纖維夾層板的拍框邊側也同樣適用，如第16圖所示。對本發明之近似矩形的拍框而言，角部的曲度是非常陡峭的(曲率半徑小)，因此網線張力在平行於織料方向的角部中會產生很大的施力，如第17圖所示。網線對其兩個鄰側的施力(如箭頭1所示)會使得這些邊側向內彎曲，而這會沿著碳纖維織料的方向產生強大的切線力(如箭頭2所示)。這些切線力會壓縮角部的內側，而延伸其外側。因為碳纖維在這些切線方向上並不強固，因此需要 厚重的角部來支撐這些切線力並防止破裂，如第1D所示。第18圖顯示在一不夠厚但有大曲度的碳纖維球拍角部1100開頭之裂痕1110。第19圖顯示扣環1120(黑色矩形)，凹穴1130(橢圓)，以及網線1140(箭頭)。 In addition to the foregoing discussion, there are other further benefits to using a metal frame. One of them is to improve the aerodynamic appearance. A preferred embodiment of the frame of the present invention is constructed from an aluminum sheet. This frame must maintain its hardness in the area where the buckle is inserted, but a large lateral hole is cut between these areas to reduce the weight of the frame. Such a structure is shown in Fig. 15, in which the force applied to the frame by the tensioned wire is mainly perpendicular to the direction of the carbon fiber woven fabric. Figure 15 shows a cross-section of the frame, the direction of the wire applied as shown by the arrow. For this reason, these frames can be made very light. The same applies to the side of the frame of the carbon fiber sandwich panel disclosed in U.S. Patent Application Serial No. 61/436,259, which is incorporated herein by reference. For the approximately rectangular frame of the present invention, the curvature of the corner is very steep (the radius of curvature is small), so the tension of the wire will generate a large force in the corner parallel to the direction of the fabric, such as Figure 17 shows. The application of the wire to its two adjacent sides (as indicated by arrow 1) causes the sides to bend inwardly, which creates a strong tangent force in the direction of the carbon fiber woven (as indicated by arrow 2). These tangential forces compress the inside of the corner and extend to the outside. Because carbon fiber is not strong in these tangential directions, it is needed Thick corners support these tangential forces and prevent cracking, as shown in Figure 1D. Figure 18 shows a crack 1110 at the beginning of a carbon fiber racquet corner 1100 that is not thick enough but has a large curvature. Figure 19 shows the buckle 1120 (black rectangle), the pocket 1130 (ellipse), and the mesh 1140 (arrow).

當在空氣中揮動球拍時，這些凹穴1130可大大的降低對該球拍的阻力。空氣阻力係與拍面的正向區域成正比，而由於這些凹穴1130的存在，此區域會縮小很多。此外，拍面上具有凹穴1130之球拍，其阻力係數相較於沒有凹穴的球拍會更小些，這是因為這些凹穴1130會減少在拍面後方擾流尾流的大小。其結果是，本發明具有凹穴1130的球拍比起重量相同的傳統球拍可揮動的更快些。揮動速率的增加與揮拍方向及揮拍速率的細節有關，並與球員的生理條件有關。不過，揮拍速率一般可增加2-4英哩/小時。同樣重要的是，此揮拍速率的增加是因為空氣阻力降低以更容易控制球拍的軌跡。 These pockets 1130 can greatly reduce the resistance to the racquet when the racquet is swung in the air. The air resistance is proportional to the forward area of the face, and due to the presence of these pockets 1130, this area is much smaller. In addition, the racquet with the pocket 1130 on the face has a smaller drag coefficient than the racquet without the pocket, since these pockets 1130 reduce the size of the turbulent wake behind the face. As a result, the racquet of the present invention having the pocket 1130 can swing faster than a conventional racquet of the same weight. The increase in the swing rate is related to the details of the swing direction and swing rate and is related to the player's physiological condition. However, the swing rate can generally be increased by 2-4 inches per hour. Equally important, this increase in swing rate is due to the reduced air resistance to more easily control the trajectory of the racket.

這些凹穴1130也可被用來輕易調整本發明球拍的重量與平衡。重物可***這些凹穴1130中，並以固定螺釘定位以影響預期的重量或改變平衡。 These pockets 1130 can also be used to easily adjust the weight and balance of the racket of the present invention. Weights can be inserted into these pockets 1130 and positioned with set screws to affect the desired weight or change balance.

金屬拍框的一項優點是，此種拍框可設計出多種不同的較佳拍面截面。我們可從金屬中刻蝕出拍框的邊側以產生更有效率及吸引人的幾何形狀。 One advantage of the metal frame is that the frame can be designed with a variety of different preferred facets. We can etch the sides of the frame from the metal to create a more efficient and attractive geometry.

金屬拍框的另一項好處是，此種拍框可允許非平行地控制球拍的震動。在與網球碰撞後，從網線傳達給拍框的低頻握把震動會使人不舒服且會損傷身體。其伴隨的衝擊可造成立即的分心及疼痛。隨著時間，這會使球員的手腕、手肘、肩膀感到酸痛，即所謂的「網球肘」現象。 Another benefit of the metal frame is that the frame allows the vibration of the racket to be controlled non-parallel. After colliding with the tennis ball, the low-frequency grip vibration transmitted from the cable to the frame can be uncomfortable and can damage the body. Its accompanying impact can cause immediate distraction and pain. Over time, this can make the player's wrists, elbows, and shoulders feel sore, the so-called "tennis elbow" phenomenon.

這些震動過去在鋁製球拍中是比較嚴重的，因此被認為是比不上碳纖維球拍的主因。令人驚異的是，金屬拍框比起碳纖維拍框可提供更有效的震動控制。而事實上，比起相同重量、大小及網線張力的碳纖維球拍，傳統鋁製球拍的震動頻率較低，但震幅較大。不過，在本發明之較佳實施例中，在拍面周圍***許多大孔洞以降低重量及空氣阻力，同時也能增加震動頻率及降低震動幅度。這是因為在震波分散到孔洞周圍後，它會重新組合成兩個接近但不同頻率的震波的重疊。這些震波的干擾會產生 一種平均震幅較低之拍頻波形圖。此外，在金屬球拍中出現的震動可被輕易地納入一適當的彈性體，在該彈性體處，這些震波在達到球員的手中之前就會被分散掉。此種衝擊吸收機構的詳細說明請參見美國專利號6,863,628-震動阻尼衝擊裝置。 These vibrations used to be more serious in aluminum racquets and are therefore considered to be the main cause of carbon fiber racquets. Surprisingly, the metal frame provides more effective vibration control than the carbon fiber frame. In fact, compared to carbon fiber racquets of the same weight, size and cable tension, the traditional aluminum racquet has a lower vibration frequency, but the amplitude is larger. However, in the preferred embodiment of the invention, a plurality of large holes are inserted around the face to reduce weight and air resistance, while also increasing the vibration frequency and reducing the amplitude of the vibration. This is because after the seismic wave is scattered around the hole, it is recombined into two overlapping waves of different but different frequencies. These seismic interferences will occur A beat waveform diagram with a lower average amplitude. In addition, the vibrations that occur in the metal racquet can be easily incorporated into a suitable elastomer where the shock waves are dispersed before reaching the player's hand. A detailed description of such an impact absorbing mechanism can be found in U.S. Patent No. 6,863,628 - Shock Damping Device.

若要將此機構實作到本發明之網球拍，則球拍喉部將不會單純地彎曲至硬實的握把座，如第3圖所示，而是會結束至一短棒1200中。此短棒1200會被一適當的彈性體1220圍繞，而一外握把殼體1240則會圍繞此彈性體1220以完成握把，此結構見於第20圖。此終結棒1200的尺寸被選定以增加震動頻率及降低震動幅度，並使此頻率發生在彈性體的吸收帶中。以此方式，基本上所有的潛在衝擊在抵達球員的手中之前都會被降低及吸收。比起類似的碳纖維球拍，此種拍面的孔洞與終結棒的結合已使得震動比較輕微。當與彈性體內的吸收組合時，任何產生的震動幾乎都會完全從球拍上消除。 To implement this mechanism to the tennis racquet of the present invention, the racquet throat will not simply bend to the hard grip seat, as shown in Figure 3, but will end up in a short stick 1200. The short rod 1200 will be surrounded by a suitable elastomer 1220, and an outer grip housing 1240 will surround the elastomer 1220 to complete the grip, as seen in Figure 20. The size of the terminating bar 1200 is selected to increase the vibration frequency and reduce the amplitude of the vibration and cause this frequency to occur in the absorption band of the elastomer. In this way, substantially all of the potential impact is reduced and absorbed before reaching the player's hand. Compared to similar carbon fiber racquets, the combination of the holes in the face and the end bars has made the vibrations relatively slight. When combined with absorption in the elastomer, any resulting vibration is almost completely eliminated from the racket.

另一種可能的震動阻尼機構是使用附著在一些(或全部)拉線孔或附著在一些(或全部)扣環中的阻尼彈性體。在網線震動產生會傳遞給握把的拍框震動之前，此裝置可將其吸收。 Another possible shock damper mechanism is to use a damped elastomer attached to some (or all) of the wire holes or to some (or all) of the buckles. The device absorbs the vibration of the frame before it is transmitted to the grip.

將這些衝擊吸收機構納入碳纖維球拍是可能的，不過卻困難的多了。若要將一適當的終結棒附著於一碳纖維喉部，會需要特別複雜的機制與增加重量。就此處說明的較佳結構而言，可從同一塊金屬切割出終結棒，而該金屬棒亦同時用來製造拍面與喉部。此單件式結構可提供有很大甜蜜點、威力強、控制佳、重量輕、揮拍速率高、震動很小、及新穎外表的球拍。 It is possible to incorporate these shock absorbing mechanisms into carbon fiber racquets, but it is much more difficult. Attaching a suitable terminating rod to a carbon fiber throat would require a particularly complicated mechanism and increased weight. For the preferred construction described herein, the end bar can be cut from the same piece of metal, which is also used to make the face and throat. This one-piece construction provides a racquet with great sweetness, power, control, light weight, high swing rate, low vibration, and a new look.

本發明金屬拍框之較佳實施例如第21A至21D圖所示。此結構包括前述的設計元件。首先，拍框的寬度朝著外拍面側1310逐漸變窄，如第21A圖所示，以增加強度及可玩性。更重要的是，在此較窄的拍面區域內結束的較短橫線1320與直線1330會承受較低的張力，因此可提供較高的威力，使球拍的甜蜜點延伸至這些網線通過的拍面區域。第二點，每一根網線的一端附著於一整合至拍面內之可鎖定扣環。這使得各網線可以用較佳的拉緊程序及較佳的張力值被各自拉緊。第三點，拍框1300係納入許 多可減輕球拍重量、減少空氣阻力、降低震動並產生新穎外表的橫向孔洞1340。第四點，拍框1300係由單一鋁片製成(除了握把的護套外)，因而提供所需的強度、剛度、及震動控制。第五點，拍面截面，如第21B圖所示，具有最優的形狀以容納可鎖定扣環(在所標示的孔洞內)，並提供預期的強度重量比。 A preferred embodiment of the metal frame of the present invention is shown in Figures 21A through 21D. This structure includes the aforementioned design elements. First, the width of the frame is gradually narrowed toward the outer face side 1310, as shown in Fig. 21A, to increase strength and playability. More importantly, the shorter transverse line 1320 and the straight line 1330 ending in this narrower face area will be subjected to lower tension, thus providing a higher power, allowing the sweet spot of the racket to extend to these lines. The area of the face. Second, one end of each cable is attached to a lockable buckle that is integrated into the face. This allows the individual wires to be individually tensioned with a preferred tensioning procedure and a preferred tension value. The third point, the frame 1300 is included in the A lateral hole 1340 that reduces the weight of the racket, reduces air resistance, reduces vibration, and creates a novel appearance. Fourth, the frame 1300 is made of a single piece of aluminum (except for the sheath of the grip), thus providing the required strength, stiffness, and vibration control. Fifth, the face section, as shown in Figure 21B, has an optimum shape to accommodate the lockable buckle (within the indicated holes) and provides the desired strength to weight ratio.

球拍握把的內段具有如第21D圖所示的截面。此一分段係從同樣用於製造拍面與喉部的鋁片車工出來的。其設計目的係容納各種不同的輕形***物，使得握把的外周緣具有預期的大小及傳統的八邊形外觀，如第21C圖所示。不過，若使用上述的衝擊吸收機構，則球拍喉部會結束在一適當的金屬棒中，如第20圖所示。握把較輕的外部則會附著在此棒的周圍並環繞彈性體。 The inner section of the racket grip has a section as shown in Fig. 21D. This segment is derived from the aluminum sheeting that is also used to make the face and throat. It is designed to accommodate a variety of different lightweight inserts such that the outer periphery of the grip has a desired size and a conventional octagonal appearance, as shown in Figure 21C. However, if the above-described impact absorbing mechanism is used, the racquet throat will end in a suitable metal bar, as shown in Fig. 20. The lighter outer portion of the grip will adhere around the rod and surround the elastomer.

在傳統的拉線過程中，單根長直線及單根長橫線各自穿過拍框並被拉緊。拉線人員不使用傳統的拉線過程，而是被提供許多要被***對應之扣環孔的網線，然後將其拉緊至預期的張力，再將其鎖定。拉線順序會在直線與橫線間交替，以避免拍框彎曲及保持平衡。一種新穎的拉線平台則被用來支撐球拍、產生張力、及鎖定扣環。此種程序還有其他的好處，例如拉線時間較短以及無釋放衝擊。此外，拉線平台可被升級，以同時將所有的直線與橫線拉伸至其預期的張力值。這會提供拉線補償程序的好處，並大幅減少拉線的時間。 In the conventional wire drawing process, a single long straight line and a single long horizontal line each pass through the frame and are tensioned. Instead of using the traditional cable pull process, the puller is provided with a number of wires to be inserted into the corresponding snap ring holes, then tensioned to the desired tension and locked. The pull sequence alternates between straight and horizontal lines to avoid bending and balancing the frame. A novel cable platform is used to support the racquet, create tension, and lock the buckle. There are other benefits to this procedure, such as shorter pull times and no release shocks. In addition, the cable platform can be upgraded to simultaneously stretch all of the straight and horizontal lines to their desired tension values. This provides the benefits of the cable compensation program and greatly reduces the time it takes to pull the cable.

在一以傳統方式拉線的運動球拍中，無論使用何種拉線法都無法精確地控制網線張力。最常用的拉線法首先使用兩個***從單一長線製作出所有直線，接著用另兩個***將第二根長線纏繞在直線上以製作出所有橫線。各網線則利用一拉線機器拉緊至預期的張力值。由於網線可能會滑過扣環及拍框外側，因此所有的網線都會得到相同的張力。 In a sports racquet that is pulled in a conventional manner, the cable tension cannot be precisely controlled regardless of the wire drawing method used. The most common wire drawing method first uses two locators to make all the straight lines from a single long line, and then uses the other two locators to wrap the second long line on a straight line to make all the horizontal lines. Each cable is tensioned to the desired tension using a puller. Since the cable may slip past the buckle and the outside of the frame, all the cables will get the same tension.

此種拉線程序有許多問題，如下所述。首先，所有施加的張力都會改變拍框的形狀(多多少少會與球拍及拉線機器上的夾置裝置有關)，因此改變先前已被拉緊的直線與網線的張力。第二點，因為張力本身及摩擦力的關係，滑動機構並非完美的。第三點，當橫線被拉緊至其預期的張力值時，這些橫線會碰到來自其周圍直線之很大的摩擦及彈性阻力。 這使得直線及橫線獲得的最終張力不同於其預期的結果，因為當橫線被拉緊時，直線也被拉緊故其張力會增加，而當直線被放鬆時，橫線會被縮短且其張力會減少。第四點，在球拍被拉線後且球拍夾置器被釋放時，拍框的形狀又會被改變，並碰到大的釋放衝擊(見以下的說明)，而這又會改變張力。第五點，由於這些張力的改變，即使對等長的網線而言，其震動頻率也不會相同，這會大幅度降低球拍的威力與甜蜜點的大小。第六點，拍面形狀的改變會在拍框中產生大的內應力，而這會強烈限制球拍設計的彈性。第七點，當網線被拉緊的球拍擊打網球時，衝擊力又會造成網線滑動及改變張力。 There are many problems with this type of cable program, as described below. First, all applied tension changes the shape of the frame (more or less related to the racquet and the clamping device on the wire drawing machine), thus changing the tension of the previously stretched line and the wire. Second, the sliding mechanism is not perfect because of the tension itself and the friction. Third, when the horizontal line is tensioned to its desired tension value, the horizontal lines will encounter large friction and elastic resistance from the straight line around them. This makes the final tension obtained by the straight line and the horizontal line different from the expected result, because when the horizontal line is tightened, the straight line is also tightened so that the tension is increased, and when the straight line is relaxed, the horizontal line is shortened and Its tension will decrease. Fourth, when the racket is pulled and the racket gripper is released, the shape of the frame is changed again and a large release impact is encountered (see description below), which in turn changes the tension. Fifth, due to these changes in tension, even for the same length of the network cable, the vibration frequency will not be the same, which will greatly reduce the power of the racket and the size of the sweet spot. Sixth, the change in the shape of the face will create a large internal stress in the frame, which will strongly limit the flexibility of the racket design. Seventh, when the cable is hit by a racket, the impact force will cause the cable to slide and change the tension.

上述之拉線法有許多不同的變化版本，但都會碰到這些相同的問題。拉線人員宣稱在拉線時可以將一些因素考慮在內，但即使是最熟練的拉線人員也只能大概完成必要的補償動作。由拉線人員提供給球員的實際張力幾乎總是與所要求的張力值非常不同。不過，幾乎所有的球員都未注意到這一點。 There are many different versions of the above-mentioned pull method, but they all encounter these same problems. Pullers claim that some factors can be taken into account when pulling the cable, but even the most skilled pullers can only complete the necessary compensation actions. The actual tension provided to the player by the puller is almost always very different from the required tension value. However, almost all players have not noticed this.

利用本發明之可鎖定扣環與此處說明之拉線法可解決上述的問題。在整個拉線過程中，此拉線法可維持球拍的形狀、補償橫線的摩擦及彈力、以及消除釋放衝擊。可鎖定扣環可完全消除滑動並維持相等的網線震動頻率。因此，網線的最後張力幾乎完全符合預期的張力。 The above problems can be solved by the lockable buckle of the present invention and the wire drawing method described herein. This wire drawing method maintains the shape of the racket, compensates for the friction and elasticity of the horizontal line, and eliminates the release shock during the entire pulling process. The lockable buckle completely eliminates slippage and maintains an equal line vibration frequency. Therefore, the final tension of the cable is almost exactly the expected tension.

本發明提供之新拉線方法係交替拉緊直線與橫線，使由直線張力產生之任何拍框局部改變都會立即被適當的橫線張力所補償。此拉線的概念係顯示在第22A至22C圖中，以高度誇張的方式呈現以求清晰。第22A圖為拉線前的拍面，為求簡單以矩形表示。第22B圖為在對稱加入兩根直線1400後的拍面，但誇張的顯示其四邊側的彎曲。這些網線1400的張力使得外拍面及內拍面1420向內彎曲，而左拍面及右拍面1430則向外彎曲(為清楚計，彎曲距離被放大且為對稱。一般說來，實際的距離在各邊側都是小於0.1”，而實際的形狀則更加複雜。如圖所示，外彎曲距離與內彎曲距離是相等的，但實際上內彎曲距離會小於外彎曲距離，因為有與內側連結之喉部的支撐)。 The new wire drawing method provided by the present invention alternately tensions the straight line and the horizontal line so that any change in the frame caused by the linear tension is immediately compensated by the appropriate transverse thread tension. The concept of this pull line is shown in Figures 22A through 22C and presented in a highly exaggerated manner for clarity. Figure 22A shows the face before the pull line, which is shown as a rectangle for simplicity. Figure 22B shows the face after the addition of two straight lines 1400 symmetrically, but exaggeratedly shows the curvature of its four sides. The tension of these wires 1400 causes the outer and inner faces 1420 to bend inward, while the left and right faces 1430 are outwardly curved (for clarity, the bending distance is magnified and symmetrical. In general, the actual The distance is less than 0.1" on each side, and the actual shape is more complicated. As shown, the outer bending distance is equal to the inner bending distance, but in reality the inner bending distance is smaller than the outer bending distance because there is Support for the throat connected to the inside).

第22C圖為一具有兩根直線與兩根橫線的拍面，圖中顯示 回復至第22A圖之原始拍面。第22C圖為一具有兩根對稱橫線1410的拍面。這些橫線1410的張力被選定，使得拍面外側與內側都向外彎曲，並大約回復至其原始位置，而拍面左側與右側則向內彎曲，也大約回復至其原始位置。 Figure 22C shows a face with two straight lines and two horizontal lines, shown in the figure. Revert to the original face of Figure 22A. Figure 22C shows a facet having two symmetrical transverse lines 1410. The tension of these transverse lines 1410 is selected such that both the outer and inner sides of the face are outwardly curved and return to their original position, while the left and right sides of the face are curved inwardly and approximately back to their original position.

本發明之拉線程序如下。在***一組其張力的設定使拍面邊側大約維持其原始形狀之直線後，***一組橫線。以此方式，球拍的網線張力會幾乎符合其預期值，但又十分強固，因為未彎曲的邊側會承受減少的內應力。達成此功能並得到相等的網線頻率則是藉由可鎖定扣環來完成。而使拍面兩側穩定並得到相等頻率的實際張力值則由球拍材料及幾何形狀來決定，如下述。 The cable drawing procedure of the present invention is as follows. A set of horizontal lines is inserted after inserting a set of tension settings such that the side of the face maintains its original shape. In this way, the wire tension of the racket will almost meet its expected value, but it is very strong because the unbent side will withstand the reduced internal stress. Achieving this function and getting equal network frequency is done by a lockable buckle. The actual tension values that stabilize both sides of the face and obtain equal frequencies are determined by the racket material and geometry, as described below.

本發明之拉線程序與先前技術一樣有效，但可更快實作。本發明拉線程序的觀念使所有的網線(直線與橫線)被同時拉緊。本拉線程序可確保在拉線過程中，拍面的改變會最少，因為由彈簧施加的直向力與橫向力會一直保持平衡。 The wire drawing program of the present invention is as effective as the prior art, but can be implemented more quickly. The concept of the wire drawing program of the present invention causes all the network wires (straight and horizontal lines) to be simultaneously tensioned. This pull line program ensures that the change in face is minimized during the pull, as the direct and lateral forces applied by the spring are always balanced.

例如，在傳統的拉線過程中，會先固定所有的直線，這會在被夾置的拍框中產生非常大的應力。網球拍必須被製造成能承受這些應力、來自橫線的額外應力(即使最後有得到部分補償)、以及更多來自釋放衝擊的額外應力(會瞬間加倍所施加的應力)。這會強烈地限制球拍的設計與製造方法。因此，傳統的球拍具有一卵形的拍面，而這會產生非常強固但輕巧的球拍，不過會嚴格限制球拍的威力與控制。本發明的球拍與拉線程序基本上可克服這些限制。在使用整合式可鎖定扣環的條件下，於整個拉線過程中可大幅降低球拍的內應力。這使得球拍有新的形狀與結構，以及更優異的性能，例如本發明較佳實施例的近似矩形的拍面。若不為了增加穩定度，則在本發明之球拍中納入具有陡峭曲度的角部會使得球拍需要更厚重的角部。 For example, in a conventional wire drawing process, all the straight lines are fixed first, which causes a very large stress in the frame being clamped. Tennis rackets must be constructed to withstand these stresses, additional stress from the crossbar (even if partially compensated at the end), and more additional stress from the release of the impact (which will double the applied stress instantaneously). This will strongly limit the design and manufacturing of the racket. Therefore, the traditional racquet has an oval face, which produces a very strong but lightweight racquet, but strictly limits the power and control of the racquet. The racket and cable pull programs of the present invention substantially overcome these limitations. Under the condition of using the integrated lockable buckle, the internal stress of the racket can be greatly reduced during the entire wire drawing process. This allows the racquet to have a new shape and configuration, as well as superior performance, such as an approximately rectangular racquet of the preferred embodiment of the present invention. In order not to increase the stability, the inclusion of a corner having a steep curvature in the racquet of the present invention causes the racquet to require a thicker corner.

在本發明拉線程序中有許多可能的拉線順序可用以完成本發明拍框穩定度的目標。以下為一實作在本發明球拍之較佳實施例上的範例，如第21A圖所示。 There are many possible cable sequences in the wire drawing procedure of the present invention that can be used to accomplish the goal of frame stability of the present invention. The following is an example of a preferred embodiment of the racket of the present invention, as shown in Figure 21A.

第23圖標示網線。直線以y1、y2、…y16表示，而橫線則 以x1、x2、…x18表示。16根直線標示成y1、y2、…y16，而18根橫線則標示成x1、x2、…x18。較佳的拉線順序如下。 The 23rd icon shows the network cable. The line is represented by y1, y2, ... y16, and the horizontal line is Expressed as x1, x2, ... x18. The 16 lines are labeled y1, y2, ... y16, and the 18 horizontal lines are labeled x1, x2, ... x18. The preferred pull sequence is as follows.

兩根橫線x2與x17先固定，接著是兩根直線y3與y14，以此類推。在選定張力後，網線被完全拉緊的球拍與網線未被拉緊的球拍在形狀與尺寸上的差異只有不到1%。 The two horizontal lines x2 and x17 are fixed first, followed by the two lines y3 and y14, and so on. After the tension is selected, the difference between the shape and the size of the racquet that is completely tensioned by the net and the racquet that is not tensioned by the net is less than 1%.

本發明之拉線程序及可鎖定扣環對網線張力提供完整且全新的控制。若對傳統的球拍以傳統方式拉線，則對任一根已經拉緊的網線將無法提供任何張力的控制。在每加入一根新網線時，張力都會改變，而且無法控制及量測。因此，每一根新加入的網線都會改變拍框的形狀，以及已被拉緊之網線的長度與張力。每一根新加入的橫線也會增加直線的張力，因為當橫線被拉緊至定位時，橫線會拉動直線往上或往下移動。使用本發明之可鎖定扣環，則可以重新調整任一根已被拉緊之網線的張力，以補償由加入其他網線所造成之任何改變。結果是得到每一根網線張力都符合預期張力值的運動球拍。 The cable pull program and the lockable buckle of the present invention provide complete and completely new control of the cable tension. If the traditional racquet is pulled in the traditional way, no tension control will be provided for any of the already tightened cables. Whenever a new network cable is added, the tension changes and cannot be controlled and measured. Therefore, each newly added network cable changes the shape of the frame and the length and tension of the cable that has been tightened. Each new horizontal line also increases the tension of the line, because when the horizontal line is tensioned to position, the horizontal line will pull the line up or down. Using the lockable buckle of the present invention, the tension of any of the tensioned wires can be re-adjusted to compensate for any changes caused by the addition of other wires. The result is a sports racquet with each cable tension that meets the expected tension value.

第24A圖顯示在離支點距離g及g’處，作用在一剛性角部的單一張力s及t，而第24B圖則顯示作用在距離xi，間隔z處的多個張力ti。完成本發明拍框穩定度目標的張力值是與球拍的細部結構有關，此處則用一簡單模型說明此技術。如第24A圖所示，兩根剛性棒以直角連結。網線則固定在離角部g與g’的距離處，而張力t與s則被施加至這些網線。若本發明的球拍與此簡單系統相同，則此條件會決定網線的補償張力。 Fig. 24A shows a single tension s and t acting at a rigid corner at distances g and g' from the fulcrum, and Fig. 24B shows a plurality of tensions ti acting at a distance z, at interval z. The tension value of the frame stability target of the present invention is related to the detailed structure of the racket, and a simple model is used here to illustrate the technique. As shown in Fig. 24A, the two rigid rods are joined at right angles. The wire is fixed at a distance from the corners g and g', and the tensions t and s are applied to the wires. If the racket of the present invention is identical to this simple system, then this condition will determine the compensation tension of the cable.

一更實際但仍然高度簡化的剛性棒模型則假設有n/2根網線，彼此以相等間距分佈在拍面的一半區域，張力值為t1、t2、…tn/2，與n’/2根分佈在鄰側的一半區域且張力值為s1、s2、…sn’/2之網線達成平衡(為簡化起見，假設n與n’是偶數)。假設g為角部與第一根網線之間的間距，而z為兩根鄰近網線之間的距離，則網線i與角部之間的距離為(請參見第24B圖)：xi=g+(i-1)z而n/2根網線對角部施加的扭力則為： A more practical but still highly simplified rigid rod model assumes that there are n/2 network lines distributed at equal intervals in half of the face, with tension values t1, t2, ... tn/2, and n'/2 The root is distributed in half of the adjacent side and the network values of the tension values s1, s2, ... sn'/2 are balanced (for simplicity, it is assumed that n and n' are even numbers). Suppose g is the distance between the corner and the first network line, and z is the distance between two adjacent network lines. The distance between the network line i and the corner is (see Figure 24B): xi =g+(i-1)z and the torque applied to the opposite corners of the n/2 cable is:

當張力為常數(ti=t)時，此式成為： 若本發明之球拍為此簡單系統，則讓此扭力等同於由鄰側施加的相似扭力後，可決定出橫線的補償張力。 When the tension is constant (ti = t), this formula becomes: If the racquet of the present invention is a simple system, then the torque is equivalent to the similar torsional force applied by the adjacent side, and the compensation tension of the horizontal line can be determined.

因為實際運動球拍的複雜性，適當的網線張力只能在電腦上以有限單元分析程式來決定。不過，藉由監測拉線程序來決定張力會比較簡單些。將一數位卡尺或相等之工具橫放在拍面的相反邊側，可以在拉線過程中量測這些邊側間的距離。當一組網線從某一方向***時，此距離會稍微改變。然後，在橫向的一組網線可被拉緊，使此距離回復到其原始值。以此方式繼續下去，網線被拉緊之球拍其形狀會非常近似其原始的形狀。 Because of the complexity of the actual sports racket, proper cable tension can only be determined on a computer with a finite element analysis program. However, it is easier to determine the tension by monitoring the cable pull program. By traversing a digital caliper or an equal tool on the opposite side of the face, the distance between the sides can be measured during the wire drawing process. When a group of network cables are inserted from a certain direction, the distance will change slightly. Then, a set of mesh lines in the lateral direction can be tightened to return this distance to its original value. In this way, the shape of the racquet that is tightened by the wire will be very similar to its original shape.

因為無法用單一一組數字來說明球拍形狀的改變，上述程序不能被用來確保最後的拍面形狀會與初始形狀相同。幸運的是，我們並不需要讓拍面形狀完全回復至其原始形狀，只要拍面形狀的改變小於幾個百分點，拍框內的應力就會最小，而且拍框厚度及重量會在可接受範圍內。無論如何，在拉線過程中將拍框的改變減少至最少並不是設定網線張力的唯一條件，還需包括相等頻率的條件。 Since a single set of numbers cannot be used to account for changes in the shape of the racket, the above procedure cannot be used to ensure that the final face shape will be the same as the original shape. Fortunately, we don't need to completely return the shape of the face to its original shape. As long as the shape change of the face is less than a few percent, the stress in the frame will be minimal, and the thickness and weight of the frame will be within the acceptable range. Inside. In any case, minimizing the change in frame during the pull process is not the only condition for setting the tension of the cable, but also includes conditions of equal frequency.

本發明拉線程序與傳統的拉線程序相當不同。一旦掌握此程序，本發明拉線程序所需時間將會少於傳統的方法。本發明的網線會被預先切割然後在一端打結，因此只需將其***球拍一側的適當孔洞中，然後即可在可鎖定扣環中之相反孔洞處拉緊。接著也許需要調整張力，不過因為沒有必要解開、量測、切割、夾置、或定位網線，本發明之拉線程序至少會與傳統的拉線程序一樣快。同時，若網線斷裂或需要重新拉緊時，本發明之網球拍上的各網線可以被快速地更換。 The wire drawing program of the present invention is quite different from the conventional wire drawing program. Once this procedure is mastered, the cable drawing process of the present invention will take less time than conventional methods. The wire of the present invention is pre-cut and then knotted at one end so that it can simply be inserted into a suitable hole in one side of the racquet and then tightened at the opposite hole in the lockable buckle. It may then be necessary to adjust the tension, but since there is no need to unravel, measure, cut, clamp, or position the cable, the cable program of the present invention is at least as fast as a conventional cable program. At the same time, if the cable breaks or needs to be re-tensioned, the network cables on the tennis racket of the present invention can be quickly replaced.

有另一種快速但同樣有效的拉線程序也使用本發明之可鎖定扣環。此程序同時提供張力給所有的網線。因此，在任何時間，若拍框沒有顯著的變形時，在拉線過程中以及之後，都會提供所有預期的直線與橫線張力，以及橫線補償。此程序可輕易地納入本發明拉線程序之較佳實施例中。 There is another fast but equally effective pull line program that also uses the lockable buckle of the present invention. This program also provides tension to all network cables. Therefore, at any time, if the frame is not significantly deformed, all expected straight and horizontal line tensions, as well as horizontal line compensation, are provided during and after the wire drawing. This procedure can be easily incorporated into the preferred embodiment of the cable pull program of the present invention.

當網線被拉緊之球拍從夾置器(在拉線過程中，夾置器係用來固定球拍)中釋放出來時，會對拍框產生衝擊。此衝擊在短時間內會加倍網線對拍框的施力。此衝擊將要求拍框比沒衝擊時要更強固及更重些， 以在釋放後支持網線張力。此衝擊同時也會改變許多網線張力。使用本發明之拉線程序，在拉線過程中網球拍會自由反應，因此將永遠不會產生突然的拍框釋放衝擊及之後的衝擊。這會使得球拍的形狀跳脫傳統且更優越。 When the racket that is pulled by the cable is released from the gripper (the gripper is used to fix the racket during the threading process), it will have an impact on the frame. This impact doubles the force applied to the frame by the cable in a short time. This impact will require the frame to be stronger and heavier than when it is not impacted. To support the cable tension after release. This impact also changes many cable tensions. With the wire drawing program of the present invention, the tennis racquet will react freely during the pulling process, so that a sudden frame release shock and subsequent impact will never occur. This will make the shape of the racket more traditional and superior.

釋放衝擊的來源為彈性系統的固有性質。當在一被拉緊之彈性體(如球拍網線)內之力量瞬間施加至另一物體(如拍框)時，作用在第二個物體的力量起初會增加至大約平衡值的兩倍。達到此最大力的時間、達到平衡的時間、以及該最大力的實際數值則與物體的彈性與阻尼性有關。 The source of the release shock is the inherent nature of the elastic system. When a force in a tensioned elastomer (such as a racquet wire) is instantaneously applied to another object (such as a frame), the force acting on the second object initially increases to approximately twice the equilibrium value. The time to reach this maximum force, the time to reach equilibrium, and the actual value of the maximum force are related to the elasticity and damping of the object.

第25圖為釋放衝擊的簡單示範。一重物Mg係定位並附著在一未拉緊之無重量阻尼彈簧上。該彈簧的彈性係數為K，且彈簧的頂部連接一剛性或固定的支撐物，如第25A圖所示。首先，在時間為0，且該彈簧尚未被拉緊時，將該重物釋放。第二步，在時間t=icko/(o2 2=K/M，假設無阻尼)後，該重物跌落一最大距離2D=2Mg/K。第三步，在足夠長的時間之後，由於阻尼的關係，重物在比初始釋放高度低一距離D處停止不動。此時，向上的彈力KD會平衡向下的重量Mg。在時間為it/w時，作用在支撐物的最大力是2DK=2Mg，為重物停止後的施力的兩倍大。 Figure 25 is a simple demonstration of the release of impact. A weight Mg is positioned and attached to an untensioned weightless damping spring. The spring has a spring constant of K and the top of the spring is attached to a rigid or fixed support as shown in Figure 25A. First, when the time is 0 and the spring has not been tightened, the weight is released. In the second step, after the time t=icko/(o2 2=K/M, assuming no damping), the weight falls by a maximum distance of 2D=2Mg/K. In the third step, after a sufficiently long time, due to the damping relationship, the weight stops at a distance D lower than the initial release height. At this time, the upward elastic force KD will balance the downward weight Mg. When the time is it/w, the maximum force acting on the support is 2DK = 2Mg, which is twice as large as the force applied after the weight is stopped.

易言之，當重物在時間t=0釋放時，它會上下震動，並最終會在彈簧延伸一距離D=Mg/K時停止不動，其中K是彈簧常數。在平衡時，向上的彈力KD會與向下的重力Mg相等，請參見第25C圖。若不計阻尼，則該重物的運動方程式為My”=Mg-Ky，初始條件為y(0)=y’(0)=0，其中y是重物質量中心的位置，該位置等於彈簧延伸的距離。此方程式的解是y(t)=D(1-cos(cot))，其中cot=K/M。y的最大值出現在t=n/co時，此時y=2D。在此位置，被拉緊之彈簧對支撐物的施力是2DK=2Mg，為重物停止後的施力的兩倍，請參見第25B圖。 In other words, when the weight is released at time t=0, it will vibrate up and down, and will eventually stop when the spring extends a distance D=Mg/K, where K is the spring constant. At equilibrium, the upward elastic force KD will be equal to the downward gravity Mg, see Figure 25C. If no damping is used, the equation of motion of the weight is My"=Mg-Ky, and the initial condition is y(0)=y'(0)=0, where y is the position of the mass center of the weight, which is equal to the spring extension. The solution of this equation is y(t)=D(1-cos(cot)), where cot=K/M. The maximum value of y appears at t=n/co, where y=2D. At this position, the tension applied by the tensioned spring to the support is 2DK = 2Mg, which is twice the force applied after the weight is stopped, see Figure 25B.

對互動彈性體的一般情形而言，衝擊力再次地是大約物體之間的靜力的兩倍。若做以下簡化(但非常合理)的假設時，則剛好是兩倍： For the general case of an interactive elastomer, the impact force is again about twice the static force between the objects. If you make the following simplification (but very reasonable) assumptions, it is exactly twice:

1.對靜態或動態負載，彈性勁度都是相同的。 1. For static or dynamic loads, the elastic stiffness is the same.

2.支撐物的重量遠低於負載的重量。 2. The weight of the support is much lower than the weight of the load.

3.在邊側變形時，沒有阻能(熱)的損耗。 3. There is no loss of resistance (heat) when the side is deformed.

將上述應用至運動球拍，其結果為當拉線機器之緊固夾置器被瞬間釋放時，作用在球拍邊側的力大約是網線張力對邊側靜力的兩倍。在進行傳統的拉線作業時，若欲避免此力量的放大效應，則需漸漸地釋放緊固夾置器。這可以藉著在拉線前在相反邊側間***一或多個可調整式緊固棒，以及在拉線後緩慢縮短然後移除這些棒來完成。在本發明之拉線程序中則不需此種麻煩又費時的工序。 Applying the above to the sports racquet results in that when the fastening device of the wire drawing machine is instantaneously released, the force acting on the side of the racquet is approximately twice the tension of the wire tension to the side. In order to avoid the amplification effect of this force during the conventional wire drawing operation, it is necessary to gradually release the fastening clip. This can be done by inserting one or more adjustable fastening bars between the opposite sides before pulling the wire, and slowly shortening and then removing the bars after pulling the wires. This troublesome and time consuming process is not required in the wire drawing program of the present invention.

第26圖顯示一較佳的拉線平台。每一根網線都有一個拉緊柱體，以及一包含螺孔之固定結構。當螺紋柱體被螺入這些孔洞時，其外端會移入扣環孔以捲繞被包圍的扣環，請參見第8至10圖。使用圖中頂部的齒輪，可以一個個或一次全部調校這些拉緊柱體。這些齒輪係位於平台的下方，請參見第27圖，但圖中並未顯示在拉線過程中將球拍定位的夾置器。 Figure 26 shows a preferred cable platform. Each wire has a tensioning cylinder and a fixed structure containing screw holes. When the threaded cylinder is threaded into these holes, the outer end will move into the buckle hole to wind the enclosed buckle, see Figures 8-10. These tensioning cylinders can be adjusted one by one or all at once using the gears at the top of the figure. These gear trains are located below the platform, see Figure 27, but the clamps that position the racket during the pull line are not shown.

目前對本發明運動球拍之較佳實施例拉緊網線的較佳作法是使用一整組預先切割好的網線，且對每組直線孔洞及橫線孔洞都提供一組網線(如第26圖所示的實施例，有36組網線。對所示的拍框，則有空間容納另二組橫線，而此二組橫線之一或全部都可視需要被納入)。各網線會被標示以指明其在網線床中的適當位置，且對應該位置有長度及線性質量密度。各網線會在其一端打結，另一端則***拍框邊側上的孔洞中，然後***在拍框對側上被選定的可鎖定扣環中。網線接著被拉緊至適當的張力，並使用第5至8圖與第11至14圖所示之可鎖定扣環來鎖定。以上所述為較佳的網線拉緊順序。 A preferred embodiment of the preferred embodiment of the sports racquet of the present invention is to use a complete set of pre-cut wires and provide a set of wires for each set of straight holes and horizontal holes (eg, 26th). In the embodiment shown, there are 36 sets of network cables. For the frame shown, there is room for two sets of horizontal lines, and one or both of the two sets of horizontal lines can be included as needed. Each network cable will be marked to indicate its proper location in the cable bed and has a length and linear mass density corresponding to the location. Each wire is knotted at one end and the other end is inserted into the hole on the side of the frame and then inserted into the lockable buckle selected on the opposite side of the frame. The wire is then tensioned to the appropriate tension and locked using the lockable buckles shown in Figures 5 through 8 and 11 through 14. The above is a preferred cable tensioning sequence.

第26圖為本發明拉線平台900之較佳實施例。該平台900包括36個拉緊柱體910，且每一網線一個，以及一固定結構911。該固定結構911包括一對應每一網線之螺孔。各螺孔具有一螺紋柱體912，其向內端部為一捲繞工具，如第9A至9E圖所示。由於這些柱體係被螺入孔洞中，其外端會移入扣環孔中，並捲繞被包圍的扣環，請參見第8至10圖。使用圖中頂部的齒輪，可以一個個或一次全部調校這些拉緊柱體。這些齒輪係位於平台的下方，請參見第27圖，但圖中並未顯示在拉線過程中將球拍定位的夾置器。可鎖定扣環在拍面左側及右側的位置會被交替設定，以確保 拍面的對稱及平衡。不過，所有的直線扣環都放置在拍面的外側，因此沒有來自球拍喉部的干擾(另一種方式是將一或多個可鎖定扣環定位在面對喉部的內側上，且喉部不會干擾的區域。一種可能的方式是將單一網線***在拍面內側中的二個中央直線孔之一，將其環繞在外側上對應的二孔周圍，然後將其***在拍面內側之另一中央孔內的可鎖定扣環中)。 Figure 26 is a preferred embodiment of the cable drawing platform 900 of the present invention. The platform 900 includes 36 tensioning cylinders 910, one for each wire, and a fixed structure 911. The fixing structure 911 includes a screw hole corresponding to each of the mesh wires. Each of the screw holes has a threaded cylinder 912 whose inward end is a winding tool as shown in Figs. 9A to 9E. Since these column systems are screwed into the holes, the outer ends of them are moved into the ring holes and the wrapped buckles are wound, see Figures 8 to 10. These tensioning cylinders can be adjusted one by one or all at once using the gears at the top of the figure. These gear trains are located below the platform, see Figure 27, but the clamps that position the racket during the pull line are not shown. The position of the lockable buckle on the left and right sides of the face will be alternately set to ensure The symmetry and balance of the face. However, all the straight loops are placed on the outside of the face, so there is no interference from the slap throat (the other way is to position one or more lockable buckles on the inside facing the throat, and the throat An area that does not interfere. One possible way is to insert a single wire into one of the two central straight holes in the inside of the face, wrap it around the corresponding two holes on the outside, and then insert it inside the face In another lockable buckle in the central hole).

若各自調校網線拉緊柱體，如前述之拉緊程序中的順序，則這些柱體必須旋轉直到網線得到預期的張力(一較佳的方式是，將一扭力扳手***位於拉緊柱體頂部的緊固孔中。若該扳手被設定成在產生對應於預期網線張力之扭力時會滑動，則此預期的張力會被施加給網線)。然後，將螺紋捲繞柱體螺入螺紋固定元件，以使其內凹之錐形壓痕向前移動至扣環面向外側的端部。隨著前向運動，扣環會如前述的夾置網線。 If the respective network cable tensioning cylinders are adjusted, as in the sequence of the tensioning procedure described above, the cylinders must be rotated until the cable is subjected to the desired tension (a preferred way is to insert a torque wrench into the tensioning In the fastening hole at the top of the cylinder. If the wrench is set to slide when a torque corresponding to the expected cable tension is generated, the expected tension is applied to the wire). The threaded winding cylinder is then threaded into the threaded retaining element such that its concave tapered indentation moves forward to the outwardly facing end of the buckle. With forward movement, the buckle will sandwich the cable as previously described.

若設置同時拉緊所有的網線，則拉線過程可進行的更快也更精確。第27圖顯示一位於拉線平台下方之自動齒輪機構的較佳實施例，該拉線平台可同時拉緊所有的網線。該自動齒輪機構係置放在第26圖之拉線平台的下方。上棒體具有螺紋以配合在上拉緊柱體(一渦輪機構)的外螺紋，故當該棒體旋轉時，這些柱體會旋轉並拉緊被固定的網線。二根側棒體也具有螺紋以配合側拉緊柱體上的外螺紋。這些側棒體係藉由齒條及小錐齒輪與上棒體連結，如第27圖所示。因此，這些側棒體會隨著上棒體轉動，而側拉緊柱體則與上拉緊柱體同時轉動。所以，所有的網線都同時會被拉緊。拉緊柱體的直徑被選定以提供各網線適當的張力。本系統的啟動是藉由一位於右上角的電動馬達或一手搖曲柄，而棒體則是由滾珠軸承的支撐件913來支撐。 If you set all the cables at the same time, the cable drawing process can be faster and more precise. Figure 27 shows a preferred embodiment of an automatic gear mechanism located below the cable platform that can simultaneously tension all of the wires. The automatic gear mechanism is placed below the cable platform of Figure 26. The upper rod has threads to engage the external threads of the upper tensioning cylinder (a turbine mechanism) so that as the rod rotates, the cylinders will rotate and tighten the fixed wire. The two side bars are also threaded to fit the external threads on the side tensioning cylinder. These side bar systems are joined to the upper bar by rack and bevel pin gears as shown in Fig. 27. Therefore, the side rods rotate with the upper rod, and the side tensioning cylinder rotates simultaneously with the upper tensioning cylinder. Therefore, all the network cables will be tightened at the same time. The diameter of the tensioning cylinder is selected to provide the proper tension for each wire. The system is activated by an electric motor or a crank handle located in the upper right corner, and the rod is supported by a support 913 of the ball bearing.

本發明提供一手持式拉線裝置，可用以取代拉線平台或僅用來取代破裂或鬆掉的網線。第28圖為一較佳實施例。該手持式拉線裝置包括把手1、軸體2、觸發器3、捲邊柱體4、網線拉緊柱體5、內拍框支撐棒6、外拍框支撐棒7、阻尼彈簧8、以及卡子9。 The present invention provides a hand-held cable pull device that can be used in place of a cable pull platform or simply to replace a broken or loose wire. Figure 28 is a preferred embodiment. The hand-held cable pulling device comprises a handle 1, a shaft body 2, a trigger 3, a crimping cylinder 4, a wire mesh tensioning cylinder 5, an inner frame support bar 6, an outer frame support bar 7, a damping spring 8, And the clip 9.

在使用此裝置時，由把手1固定一拍框並先將其鎖定在內支撐棒6與外支撐棒7之間，使拍框中對應的網線孔與捲邊柱體4對齊。接著，將一已打結的網線***拍框對側上對應的孔洞，穿過放置在拍框孔內 的扣環，並穿過柱體4的中央孔。然後，使用觸發器3-彈簧8-卡子9機構沿著軸體2推動把手段，因此會將捲邊柱體移入拍框孔及移到扣環上。在捲邊柱體將扣環捲繞在網線上時，將網線的外端部纏繞在拉緊柱體5的周圍，再轉動拉緊柱體(例如使用扭力扳手)，直到得到預期的網線張力值。最後，在扣環上轉動捲邊柱體4，以將扣環捲向被拉緊的網線，如此可將扣環鎖定。接著則釋放卡子9，使捲邊柱體從拍框孔中移出，而球拍則可從支撐棒中移除。 When the device is used, a frame is fixed by the handle 1 and locked between the inner support bar 6 and the outer support bar 7 so that the corresponding wire hole of the frame is aligned with the curling cylinder 4. Next, insert a knotted network cable into the corresponding hole on the opposite side of the frame and pass it through the hole in the frame. The buckle passes through the central hole of the cylinder 4. Then, the trigger 3 - spring 8 - clip 9 mechanism is used to push the means along the shaft 2, thus moving the curling cylinder into the frame hole and onto the buckle. When the crimping cylinder winds the buckle around the wire, wrap the outer end of the wire around the tensioning cylinder 5, and then rotate the cylinder (for example, using a torque wrench) until the desired mesh is obtained. Line tension value. Finally, the crimping cylinder 4 is rotated on the buckle to wind the buckle toward the tensioned wire so that the buckle can be locked. The clip 9 is then released, allowing the crimping cylinder to be removed from the frame hole and the racket being removed from the support bar.

上述的實施例有許多不同的變化版本。例如，網線拉緊柱體可以被固定在軸體的外端部，而非在把手段的內部；觸發器機構本身可被用來設定網線張力，而齒輪機構則可被用來取代彈簧滑動機構。其他的變化版本已為精於本技術者熟悉，故不再贅述。 There are many different variations of the above described embodiments. For example, the wire tensioning cylinder can be fixed to the outer end of the shaft rather than inside the means; the trigger mechanism itself can be used to set the wire tension, and the gear mechanism can be used instead of the spring Sliding mechanism. Other variations have been familiar to those skilled in the art and will not be described again.

第29至33圖為本發明較佳的網線張力值、張力調整裝置、以及網線更換裝置。 Figures 29 to 33 are preferred mesh tension values, tension adjusting devices, and network cable changing devices of the present invention.

第29圖顯示網球拍參數的標註，其中n根直線，其長度為li及張力為ti。n'根橫線，其長度為kj，而張力則為sj。g是拍框與鄰近直線間的間距，而g’則為拍框與鄰近橫線間的間距。 Figure 29 shows the labeling of the tennis racket parameters, where n straight lines have a length of li and a tension of ti. The n' root line has a length of kj and the tension is sj. g is the spacing between the frame and the adjacent line, and g' is the spacing between the frame and the adjacent horizontal line.

張力值會被選定以完成三個不同的目標：(1)在直線與橫線上獲得相等的震動頻率(2)消除拍框的彎曲(3)提供較高威力給靠近拍框的網線。為達成所有的目標，都需要在較短網線上使用較低的張力。本發明較佳實施例可同時達成這三個目標。本發明亦在直線與橫線上提供相等的頻率(使用不同密度的網線)。 The tension value is selected to accomplish three different targets: (1) equal vibration frequencies on the straight and horizontal lines (2) elimination of the frame bending (3) providing higher power to the network cable close to the frame. To achieve all of the goals, you need to use a lower tension on a shorter cable. The preferred embodiment of the present invention achieves these three objectives simultaneously. The present invention also provides equal frequencies on straight and horizontal lines (using different density of mesh lines).

本發明可鎖定扣環的主要優點是可在任何網線上設定任何預期的網線張力。決定最佳張力有四個準則：(1)頻率必須相等(2)要有額外的威力區(3)要有最大的威力(4)要有橫向補償。各準則皆需要較短網線承受較低的張力，而這使得一次滿足所有條件成為可能。 The main advantage of the lockable buckle of the present invention is that any desired wire tension can be set on any wire. There are four criteria for determining the optimal tension: (1) the frequency must be equal (2) there must be an additional power zone (3) to have the greatest power (4) to have lateral compensation. Each criterion requires a shorter cable to withstand lower tension, which makes it possible to satisfy all conditions at once.

此處「威力」一詞(傳統上與球拍的性能有關)表示網球拍與網球間的恢復係數(COR)，以作為性能的衡量。COR被定義成衝擊前後相對速率的比值(v’-V)/(v+V)，其中v是網球的入射速率，V是球拍在衝擊點的揮動速率，v’是網球的回跳速率，而V’是衝擊後球拍的速率。 對一網球而言，此COR是球拍性能的直接與準確的衡量指標。對一已知網球及網球拍，以及一已知入射球速及網球拍的揮動速率而言，擊球速率是隨著COR的增加而線性增加。此處的「威力」一詞代表準確的COR值。 Here the term "power" (conventionally related to the performance of the racket) represents the coefficient of restitution (COR) between the tennis racket and the tennis ball as a measure of performance. COR is defined as the ratio of the relative velocity before and after the impact (v'-V) / (v + V), where v is the incident rate of the tennis ball, V is the waving rate of the racket at the impact point, and v' is the rebound rate of the tennis ball. And V' is the rate of the racket after the impact. For a tennis ball, this COR is a direct and accurate measure of the performance of the racket. For a known tennis and tennis racket, as well as a known rate of incident ball speed and tennis racquet, the hitting rate increases linearly with increasing COR. The term "power" here refers to the exact value of COR.

此處的「控制」一詞(傳統上與球員將網球打到他想要的地方之能力有關)的定義如下。如果擊球的軌跡因不完美的衝擊而與預期軌跡偏離的較少，則稱該球拍提供較多的控制。若技術上要準確，則應使用因不完美衝擊而產生的角度誤差(AE)做為控制的衡量。當球拍完美的揮動時，若網球擊中拍面的幾何中心，則網球會以AE為零的角度回跳並向著預期的方向，以預期的速度及自轉行進。當然此種衝擊是很少見的。此外，拍面中心通常並非最佳的衝擊點，因為該最佳衝擊點離球拍的質量中心太遠了。因此，由於球員的失誤或拍面中心不是預期的衝擊位置，幾乎所有的擊球都是偏心的。 The term "control" here (conventionally related to the player's ability to play tennis to the place he wants) is defined as follows. If the trajectory of the shot is less deviated from the expected trajectory due to imperfect impact, the racquet is said to provide more control. If technically accurate, the angular error (AE) due to imperfect shock should be used as a measure of control. When the racket is perfectly swung, if the tennis ball hits the geometric center of the face, the tennis ball will rebound at an angle of AE zero and travel in the desired direction at the expected speed and rotation. Of course, such shocks are rare. In addition, the center of the face is usually not the best point of impact because the best point of impact is too far from the center of mass of the racket. Therefore, almost all shots are eccentric due to the player's mistake or the center of the face is not the expected impact position.

有三個原因使偏心的衝擊產生AE。第一個原因是在單一網線上的偏心衝擊會在網球的兩側產生不相等的切線力，因而使網球偏離垂直方向。這是因為AE會隨著張力的增加而減少。第二個原因是當網球衝擊一組遠離拍面中心的鄰近網線時，若這些網線的長度不等則會從各網線產生不同的力。不過，在本發明之球拍上得到的AE會大幅降低，因為本發明的網線長度是相等或大約相等的。第三個原因是若網球衝擊到遠離球拍中心軸的位置(該軸係穿過並平行於握把)，則在衝擊過程中，球拍會繞著此軸轉動到離開該衝擊點。因為在拍面轉動後，網球會離開該拍面，故會產生AE。對本發明的球拍，此AE會大幅降低，因為本發明的球拍在其中心軸上之慣性力矩非常大，此力矩可大幅減少球拍向後轉動的幅度。 There are three reasons for the eccentric impact to produce AE. The first reason is that the eccentric impact on a single mesh line produces unequal tangential forces on both sides of the tennis ball, thus causing the tennis ball to deviate from the vertical direction. This is because AE will decrease as the tension increases. The second reason is that when a tennis ball hits a group of adjacent cables that are far from the center of the face, if the lengths of the wires are not equal, different forces are generated from the wires. However, the AEs obtained on the racket of the present invention are greatly reduced because the lengths of the screens of the present invention are equal or approximately equal. The third reason is that if the tennis ball hits a position away from the center axis of the racket (the shaft passes through and parallel to the grip), the racket will rotate about the axis to exit the point of impact during the impact. Because the tennis ball will leave the face after the face is turned, an AE will be generated. For the racket of the present invention, this AE is greatly reduced because the racquet of the present invention has a very large moment of inertia on its central axis, which greatly reduces the amplitude of the backward rotation of the racquet.

(1)相等頻率。在一拍面上，有n根直線，其長度為li(i=1,2,…n)且張力為ti。另有n’根橫線，其長度為kj(j=1,2,…n’)且張力為sj，請參見第29圖。一長度為l，張力為t，單位長度的質量為m，且兩端固定的網線，其基本頻率為f=(t/m)/2l，則相等直線頻率與相等橫線頻率的條件(假設所有的網線其m都是相同的)為 =,=,=1,2,...,=1,2,...， 如美國專利號6,344,006所示，當滿足這些條件時，可得最佳性能。 (1) Equal frequency. On a face, there are n straight lines with a length of li (i = 1, 2, ... n) and a tension of ti. There is another n' root horizontal line whose length is kj (j = 1, 2, ... n') and the tension is sj, see Figure 29. A condition of length l, tension is t, mass per unit length is m, and the fixed line at both ends has a fundamental frequency of f=(t/m)/2l, and the condition of equal linear frequency and equal horizontal line frequency ( Assume that all network cables have the same m) =, =, = 1, 2, ..., = 1, 2, ..., as shown in U.S. Patent No. 6,344,006, the best performance is obtained when these conditions are met.

(2)額外的威力。上述相等頻率的條件會增加威力，因為所有的直線與所有的橫線會一致反應以加速被擊中的網球，因此所有的網線在同一時間會推動網球。不過，另外有一個不同，但較傳統的威力準則。一般說來，張力較低的網線會產生較多的威力，但控制卻較差。通常的解釋是低張力會有較多的「彈跳床效應」，可是這個解釋是錯誤的。正確的理由是張力愈低，則網線床向內彎曲的愈多，因此網球被壓縮的幅度愈少，而這會增加衝擊的效能，因為大部分儲存在被彎曲之網線中的能量會回傳給網球，而大部分儲存在被壓縮之網球中的能量則以熱的形式排除。 (2) Additional power. The above-mentioned conditions of equal frequency increase the power because all the straight lines react with all the horizontal lines to accelerate the hit tennis, so all the nets will push the tennis ball at the same time. However, there is another difference, but more traditional power guidelines. In general, a cable with a lower tension will generate more power, but the control is poor. The usual explanation is that low tension will have more "bounce bed effects", but this explanation is wrong. The correct reason is that the lower the tension, the more the cable bed bends inward, so the less the tennis ball is compressed, which increases the impact efficiency, because most of the energy stored in the bent wire will return. Passed to tennis, and most of the energy stored in the compressed tennis ball is removed in the form of heat.

本發明之可鎖定扣環提供一種方式來利用此效應。考慮一如第2圖所示之近似矩形的球拍20。此球拍20再次顯示在第30圖中，其中在橢圓部內的區域1500代表大的正手(相等張力)甜蜜點。「甜蜜點」定義成在固定的拍面上的區域，在該區域內回跳球的速率至少為入射球速率的80%。第30圖顯示的是具有相等直線與橫線張力之近似矩形的球拍之甜蜜點。請注意，因為網線在拍面角部結束，完全位於甜蜜點1500之外的網線，其長度會比在同一方向的其他網線短。這表示藉著提供較低張力給這些較短的網線以提供其與較長網線一樣的頻率，這些網線則同時被賦予產生額外威力的能力。此效應會將甜蜜區更進一步往拍框周圍擴散，而變得更大。其結果是得到如第31圖所示之一非常大的甜蜜點1600。若使用本發明之較佳實施例，則此效應會更明顯。第31圖顯示一具有相等直線與橫線頻率之近似矩形球拍的甜蜜點，其中較短的網線其張力較低。 The lockable buckle of the present invention provides a way to take advantage of this effect. Consider an approximately rectangular racket 20 as shown in Fig. 2. This racket 20 is again shown in Figure 30, where the area 1500 within the ellipse represents a large forehand (equal tension) sweet spot. "Sweet spot" is defined as the area on a fixed face where the rate of bouncing balls is at least 80% of the rate of the incident ball. Figure 30 shows the sweet spot of a racket with an approximately rectangular shape with equal linear and transverse line tension. Please note that because the cable ends at the corner of the face, the network cable that is completely outside the sweet spot 1500 will be shorter than other cables in the same direction. This means that by providing lower tension to these shorter cables to provide the same frequency as longer cables, these cables are simultaneously given the ability to generate additional power. This effect will spread the sweet area further around the frame and become bigger. As a result, a very large sweet spot 1600 as shown in Fig. 31 is obtained. This effect is more pronounced if the preferred embodiment of the invention is used. Figure 31 shows a sweet spot of an approximately rectangular racket with equal straight and horizontal line frequencies, with a shorter mesh having a lower tension.

第3圖及第32圖顯示的是本發明之具有大正手(相等張力)甜蜜點1700的較佳實施例。在此球拍100中，某些網線比較短，因為他們在上述之拍面角部中結束，而另一些網線較短是因為拍面會隨著離喉部的距離增加而逐漸變窄，又另一些網線較短是因為這兩個原因。提供較低張力給這些較短的網線可將甜蜜點延伸至上拍面區域內。其結果是得到如第33圖所示之幾乎佔據整個拍面100的超大甜蜜點1800。 Figures 3 and 32 show a preferred embodiment of the present invention having a large forehand (equal tension) sweet spot 1700. In this racket 100, some of the screens are relatively short because they end in the above-mentioned corners of the face, while others are shorter because the face is gradually narrowed as the distance from the throat increases. Other network cables are shorter for these two reasons. Providing a lower tension to these shorter mesh lines extends the sweet spot into the upper face area. As a result, an extra-sweet spot 1800 which occupies almost the entire face 100 as shown in Fig. 33 is obtained.

前述的分析中有一點需要澄清。雖然較低的網線張力的確會產生較大的威力，但網線較長也的確會產生較大的威力，而且增加的比例相同。亦即張力減少x%所增加的威力與長度增加x%所增加的威力大致相 同。因此，由於因張力減少而增加的威力會被因長度減少而降低的威力補償，所以我們可能會認為上述之甜蜜點會向拍框外側延伸的現象不會實現。幸運的是，因為張力的減少是與l²而非1成正比，所以這的確會實現。換句話說，決定威力大小(當t/l減少時，威力會增加)之張力長度比(t/l)，在適用相等頻率的條件(t²/l=const)下時，係與t/t²=1/t成正比。因此，在此情形下，當t減少時，t/l也跟著減少。因此之故，因網線長度縮短而減少之威力會不及因這些網線張力的降低而增加的威力。 One point in the aforementioned analysis needs clarification. Although the lower cable tension does produce a lot of power, the longer the cable will also produce greater power, and the proportion of increase is the same. That is, the power added by the tension reduction x% is about the same as the increase in the length increase x%. Therefore, since the increased power due to the decrease in tension is compensated by the reduced power due to the reduction in length, we may think that the above-mentioned sweet spot will not extend to the outside of the frame. Fortunately, this is true because the reduction in tension is proportional to l ² instead of 1. In other words, determine the magnitude of the tension (t/l) when the power is large (when t/l decreases, the force is increased), and when the condition of equal frequency (t ² /l=const) is applied, t/ t ² =1/t is proportional. Therefore, in this case, when t is decreased, t/l is also decreased. Therefore, the power of the reduction in the length of the cable is less than the increase in the tension of these cables.

藉由提供較短網線更少於相等頻率條件所需之張力，可以給與球拍之較短網線更多的威力，以及更大的甜蜜點嗎？相等頻率的條件會犧牲一些威力，但因低張力也會獲得一些威力。因為所有網線之間的複雜互動關係，故此問題的答案需要藉助電腦的詳細評估。計算結果卻是「否定的」。因為在滿足相等頻率的條件下，才能得到最佳的性能。降低短網線張力至低於其相等頻率的張力值時，會減少其最佳性能。 By providing a shorter network cable with less tension than equal frequency conditions, can you give the racket a shorter cable and more sweet spots? Equal frequency conditions sacrifice some power, but they also gain some power due to low tension. Because of the complex interactions between all the cables, the answer to this question needs to be evaluated in detail by the computer. The result of the calculation is "negative". Because the best performance can be achieved if the equal frequency is met. Reducing the tension of the short wire to a tension value below its equal frequency will reduce its optimum performance.

本發明之可鎖定扣環亦可用在傳統形狀的球拍以降低張力，並因此而增加較短網線所提供之威力。大多數這些較短網線太短而無法以長網線之頻率震動，因此所增加的威力無法彌補控制的降低。 The lockable buckle of the present invention can also be used in conventionally shaped racquets to reduce tension and thereby increase the power provided by shorter screens. Most of these shorter cables are too short to vibrate at the frequency of long cables, so the added power cannot compensate for the reduction in control.

因網線張力的增加而增加控制與減少威力是本發明較佳球拍相較於傳統球拍的另一項重要優勢。比起具有相同網線張力之傳統球拍，本發明之球拍可提供更多的威力，理由是本發明實作相等頻率的功能。這表示本發明之球拍可使用較大的張力以獲得更多的控制，而同時又能重新取回因相等頻率條件而損失的威力。所以，網球選手可同時得到最佳的控制與最佳的威力。 Increasing control and reducing power due to the increase in cable tension is another important advantage of the preferred racket of the present invention over conventional rackets. The racquet of the present invention provides more power than conventional racquets having the same cable tension, on the grounds that the present invention implements equal frequency functions. This means that the racquet of the present invention can use a larger tension to obtain more control while at the same time regaining the power lost due to equal frequency conditions. Therefore, tennis players can get the best control and the best power at the same time.

(3)可變密度及最大威力。前述的說明係假設各網線的線性密度(質量/長度)都是相等的(m=const)。由於可鎖定扣環提供的自由度，此限制將不再需要。對以傳統方式拉緊網線的球拍，當單一長網線用於所有的直線時，要在不同的直線上提供不同的密度將十分困難，這對橫線也一樣。本發明較佳實施例則使用可鎖定扣環，而且在拍面上使用預先切割的網線，因此在各網線上提供任一種預期的密度都會非常容易。這會開啟新的拉線方式，並在所有網線上提供相等的頻率而不使用不實際的張力。 若密度不相等，則相等頻率的條件會變成 =,=,=,,...,=,,...，其中，mi是直線i的密度，m’j是橫線j的密度。不同的網線可以有不同的線性密度，這有兩個原因：網線可有不同的直徑，或者網線可以由不同材料製造。網線的直徑範圍傳統上以「號數」值來標示，大約如下表： 很明顯的，較細的網線有較多的自由度及控制，而較粗的網線則較耐用。一些常用網線的密度(質量/體積)如下表所示： 網線的線性密度是m=d²/4，其中d是網線直徑，而是網線體積密度。由上表，可用的線性密度m的範圍是介於m1=0.02g/cm(15號的Kevlar)與m2=0.01g/cm(18號的尼龍)之間。 (3) Variable density and maximum power. The foregoing description assumes that the linear densities (mass/length) of the respective network lines are equal (m=const). This limitation will no longer be required due to the degree of freedom provided by the lockable buckle. For rackets that tighten the cable in the traditional way, when a single long wire is used for all straight lines, it is very difficult to provide different densities on different straight lines, as is the diagonal line. The preferred embodiment of the invention uses a lockable buckle and uses a pre-cut wire on the face, so it is very easy to provide any desired density on each wire. This will open a new pull mode and provide equal frequency on all network lines without using unrealistic tension. If the densities are not equal, the condition of equal frequency will become =, =,=,,...,=,,..., where mi is the density of the line i and m'j is the density of the line j. Different network cables can have different linear densities for two reasons: the wires can have different diameters, or the wires can be made of different materials. The diameter range of the network cable is traditionally indicated by the "number" value, which is approximately as follows: Obviously, thinner cables have more degrees of freedom and control, while thicker cables are more durable. The density (mass/volume) of some common network cables is shown in the following table: The linear density of the wire is m = d ² /4, where d is the wire diameter, but the wire density. From the above table, the available linear density m ranges between m1 = 0.02 g/cm (Kevlar No. 15) and m2 = 0.01 g/cm (Nylon No. 18).

使用不同的網線線性密度可大幅增加維持相等網線頻率之球拍設計的可接受之網線長度。在密度為常數，以及可接受的張力介於T1=40鎊與T2=70磅時，最短網線與最長網線之間的最小長度比L1/L2為 =0.76。若密度不等，則此最小長度=0.53。若密度為常數，且最長的網線長度為L2=12”，則最短的網線長度必須至少為9.1”，但當密度不等時，最短網線長度則可小至6.4”。以感覺及耐用性而言，這是假設球拍擁有者會接受所有的網線直徑與材料。特定的直徑或材料的需求可增加最短可接受網線之長度，不過利用可變之網線線性密度總是會有益處。 The use of different network linear densities can significantly increase the acceptable length of the cable for a racket design that maintains equal network frequency. When the density is constant and the acceptable tension is between T1=40 pounds and T2=70 pounds, the minimum length ratio L1/L2 between the shortest network line and the longest network line is =0.76. If the density is not equal, then this is the longest Degree = 0.53. If the density is constant and the longest cable length is L2=12”, the shortest cable length must be at least 9.1”, but when the density is not equal, the shortest cable length can be as small as 6.4”. In terms of durability, this assumes that the racket owner will accept all cable diameters and materials. The specific diameter or material requirements can increase the length of the shortest acceptable cable, but using a variable cable linear density will always There are benefits.

若使用可變的網線密度，則可以設定橫線的頻率使其與直線頻率相同。因為橫線的長度幾乎總是大於直線長度的53%，橫線會有夠大的直徑與體積密度，因此橫線會容易與直線在同一頻率下震動。此時，相等頻率的條件成為=,=,=,,...,=,,...，則所得到的球拍，其所有的網線都有相等的最低頻率，而該網球拍將會是最具威力者。同時，只有使用本發明之可鎖定扣環才達到最佳性能。 If a variable cable density is used, the horizontal line frequency can be set to be the same as the linear frequency. Since the length of the horizontal line is almost always greater than 53% of the length of the straight line, the horizontal line will have a large diameter and bulk density, so the horizontal line will easily vibrate at the same frequency as the straight line. At this time, the condition of equal frequency becomes =, =,=,,...,=,,..., the resulting racket, all of which have equal minimum frequencies, and the tennis racket will be the most powerful. At the same time, optimum performance is achieved only by using the lockable buckle of the present invention.

(4)橫向對稱。以上討論如何對本發明之球拍拉線以使得直線與橫線平衡，藉以降低拍框內的應力。有許多直線張力值ti及橫線張力值sj可達成此目的。這些張力的最佳值與球拍的細部材料與幾何條件有關，也跟預期的最大張力有關。以下以一簡單模式來說明此觀念。 (4) Horizontal symmetry. It is discussed above how to pull the wire of the racquet of the present invention such that the straight line and the horizontal line are balanced, thereby reducing the stress in the frame. There are many linear tension values ti and horizontal tension values sj for this purpose. The optimum value of these tensions is related to the detailed material and geometry of the racket and also to the expected maximum tension. The following is a simple model to illustrate this concept.

為示範計，假設所有的直線都具有相等的張力ti=t，且所有的橫線也具有相等的張力sj=s。為簡化起見，拍面模擬成一矩形，其邊側在固定的角部結束。拍框的參數如下：拍框厚度=h，慣性力矩=I，直線長度=l，橫線長度=k，直線數=n，橫線數=n’。 For the sake of example, assume that all straight lines have equal tension ti = t, and all horizontal lines also have equal tension sj = s. For the sake of simplicity, the face is modeled as a rectangle whose sides end at a fixed corner. The parameters of the frame are as follows: frame thickness = h, moment of inertia = I, line length = l, horizontal line length = k, number of straight lines = n, number of horizontal lines = n'.

在長邊側上之網線張力所產生之在角部的應力為mslh/24I，而由短邊側網線張力產生之角部應力為ntkh/24I。假設平衡條件(橫向對稱)是此二角部應力相等，則這等於n’sl=ntk或s/t=nk/n’l。 The stress at the corner caused by the tension of the wire on the long side is mslh/24I, and the stress at the corner caused by the tension of the short side mesh is ntkh/24I. Assuming that the equilibrium condition (lateral symmetry) is that the stresses of the two corners are equal, this is equal to n'sl=ntk or s/t=nk/n'l.

因為k<l及n<n’(固定在長邊側的網線比在短邊側者多)，故此張力比會小於1(s<t)。一般的數值為若s/t=0.66，則n=16，n’=20，k=9.5”，l=11.5”，故若t=60磅，則s=40磅。 Since k < l and n < n' (the number of mesh lines fixed on the long side is larger than that on the short side), the tension ratio is less than 1 (s < t). The general value is if s/t = 0.66, then n = 16, n' = 20, k = 9.5", l = 11.5", so if t = 60 pounds, then s = 40 pounds.

一般而言，此模式太簡化，以致於其數值並不正確。不過，請注意上述的橫向對稱條件可加入橫線-直線等頻率條件，而得到 s/tnk/n’1(m/m’)(k/l)²或n/n’mk/m’1在簡單橫向對稱模式中，其網線滿足此條件的球拍在拍框內的應力會最小(故重量也最輕)，而在所有的網線上其頻率都會相同(故有最佳性能)。 In general, this mode is so simplified that its value is not correct. However, please note that the above-mentioned lateral symmetry conditions can be added to the horizontal condition such as the horizontal line-straight line to obtain s/tnk/n'1(m/m')(k/l) ² or n/n'mk/m'1. In the simple lateral symmetry mode, the racquet whose mesh line satisfies this condition will have the least stress in the frame (and therefore the lightest weight), and the frequency will be the same on all the network lines (so the best performance).

選擇滿足此方程式的球拍與網線參數並不困難，即使直線與橫線由同一材料構成(m=m’)。假設z是相鄰兩網線間的距離，g是球拍長(直)邊側與鄰近直線間的間距，而g’是球拍短(橫)邊側與鄰近橫線間的間距，如第29圖所示。則要求解的方程式為k=nl/n’，2g=k-(n-1)z，2g’=l-(n’-1)z例如，選擇l=11.5”，n=16，n’=19，及z=0.5”為輸入，則輸出會是非常合理的數值k=9.7”，g=1.10”，及g’=1.25”。張力比是t/s=1.41。因此，若橫線張力為s=45磅，則直線張力t為63.5磅。 It is not difficult to select the racket and cable parameters that satisfy this equation, even if the straight and horizontal lines are made of the same material (m=m'). Let z be the distance between two adjacent wires, g is the distance between the long (straight) side of the racket and the adjacent straight line, and g' is the distance between the short (horizontal) side of the racket and the adjacent horizontal line, as in the 29th. The figure shows. Then the equation for the solution is k=nl/n', 2g=k-(n-1)z, 2g'=l-(n'-1)z For example, select l=11.5”, n=16, n' If =19, and z=0.5" are inputs, the output will be a very reasonable value k=9.7", g=1.10", and g'=1.25". The tension ratio is t/s=1.41. Therefore, if the horizontal line The tension is s = 45 lbs and the linear tension t is 63.5 lbs.

總結來說，本發明之網球拍可滿足相等頻率的條件，因此在拍面的任何位置都有最大的威力。同時，本發明之網球拍亦滿足橫向對稱的條件，因此就其重量而言可得最大強度。本發明最佳實施例為一滿足以上此二個條件的網球拍，因此為一完美的產品。 In summary, the tennis racket of the present invention can satisfy the conditions of equal frequency, and thus has the greatest power at any position of the face. At the same time, the tennis racket of the present invention also satisfies the condition of lateral symmetry, so that the maximum strength is obtained in terms of its weight. The preferred embodiment of the present invention is a tennis racket that satisfies these two conditions and is therefore a perfect product.

本發明其他實施例包括使用不同的球拍形狀與材料，以及可鎖定扣環的設計。其他的可能性包括使用一些但非全部可鎖定扣環的網球拍，以及使用碳纖維-金屬組合的網球拍。此種組合的一實施例為碳纖維管狀拍框，其外拍面周圍包含被埋入之金屬條，該金屬條包括置入扣環之金屬柱體。 Other embodiments of the invention include the use of different racquet shapes and materials, as well as the design of the lockable buckle. Other possibilities include tennis racquets that use some but not all lockable clasps, and tennis racquets that use a carbon fiber-metal combination. An embodiment of such a combination is a carbon fiber tubular frame having a metal strip embedded therein around the outer face, the metal strip including a metal cylinder placed in the buckle.

上述及如第21圖所示之較佳實施例具有下列特性：球拍材料為固態的鋁。拍面具有平直、幾乎平行的邊側，以及半徑為2.5”與3”的角部。拍面的外側比內面短(靠近喉部)。網球拍包括許多大的橫向孔洞。拍面的截面，如第21B圖所示，在向外的端部較寬且內凹。拍面包括可鎖定扣環與伴隨的緊固孔，如上述及第5至8圖，與第11至14圖所示的LG1至LG8。拍面的各根網線都有一可鎖定扣環。運動球拍具有一震動吸收機構。運動球拍係由單一一片金屬製造的。運動球拍的拉線是依照本發明揭露之拉線程序之一，及使用拉線裝置之一。網線張力的選定使得所有的直線都有相同的基本震動頻率，而所有的橫線也有相等的基本震動頻率。拍框的形狀在拉線前及拉線後都大約相同。網線線性密度的選定使得所有的 直線與所有的橫線都具有相同的基本震動頻率。 The preferred embodiment described above and as shown in Fig. 21 has the following characteristics: the racquet material is solid aluminum. The face has straight, nearly parallel sides, and corners with a radius of 2.5" and 3". The outside of the face is shorter than the inner face (near the throat). Tennis rackets include many large lateral holes. The cross section of the face, as shown in Fig. 21B, is wider and concave at the outward end. The face includes a lockable buckle and accompanying fastening holes, as described above and in Figures 5 through 8, and LG1 through LG8 as shown in Figures 11 through 14. Each cable of the face has a lockable buckle. The sports racquet has a shock absorbing mechanism. The sports racket is made of a single piece of metal. The pull wire of the sports racquet is one of the wire drawing programs disclosed in the present invention, and one of the wire pulling devices is used. The tension of the cable is chosen so that all lines have the same basic vibration frequency, and all horizontal lines have equal fundamental vibration frequencies. The shape of the frame is approximately the same before and after the cable is pulled. The linear density of the network cable is selected so that all The straight line has the same basic vibration frequency as all horizontal lines.

在不改變本發明之精神下，各特性多多少少都可有所變化，如下述： Without changing the spirit of the invention, the characteristics may vary more or less, as follows:

(1)材料可以不必堅實而且也不一定需要是鋁。其他金屬，如鈦與其他鋁合金，以及非金屬，如碳纖維、Kevlar、或尼龍也可使用，只要他們夠強固及夠輕。同時，管狀或夾層式的拍框(如美國專利申請案號61/436,259所揭露者)也可使用。這些替代方案中，有些可能需要較厚的角部或較複雜的可鎖定扣環***物，不過產生的球拍仍然比傳統的球拍性能佳。 (1) The material may not be solid and does not necessarily need to be aluminum. Other metals, such as titanium and other aluminum alloys, as well as non-metals such as carbon fiber, Kevlar, or nylon, can be used as long as they are strong enough and light enough. At the same time, a tubular or sandwich frame (as disclosed in U.S. Patent Application Serial No. 61/436,259) is also incorporated. Some of these alternatives may require thicker corners or more complex lockable buckle inserts, but the resulting racket still performs better than traditional rackets.

(2)可使用各種不同的施力組態，只要能實作相等頻率的條件，而不需無法接受的網線張力或密度。 (2) A variety of different force configurations can be used as long as the conditions of equal frequency can be implemented without unacceptable wire tension or density.

(3)拍面的外側長度可與內拍面的長度相等或較長些，只要拍框夠強固到能支撐網線張力而不會過重。若拍面的外側不短於內拍面的長度，則上端的網線不會比其他的網線短，因此不會得到將甜蜜點向外延伸的較低張力。不過，此種運動球拍的性能會比傳統的球拍佳。 (3) The outer length of the face can be equal to or longer than the length of the inner face, as long as the frame is strong enough to support the tension of the cable without being overweight. If the outer side of the face is not shorter than the length of the inner face, the upper end of the wire will not be shorter than the other wires, so that a lower tension that extends the sweet spot outward will not be obtained. However, the performance of this sports racket is better than the traditional racket.

(4)若使用堅實的金屬，則必須使用孔洞以減輕拍框，而且這些孔洞也會降低空氣阻力及震動。孔洞可以有任何形狀或大小，只要能減輕所需的重量。若使用較輕的管狀材料或任何較輕的非金屬材料，則不需使用孔洞。 (4) If solid metal is used, holes must be used to reduce the frame, and these holes will also reduce air resistance and vibration. The holes can be of any shape or size as long as the required weight is reduced. If a lighter tubular material or any lighter non-metallic material is used, no holes are required.

(5)拍面的截面可有任何形狀或大小，只要所產生的網球拍夠強到能支撐網線張力及可鎖定扣環的凹穴，但又夠輕到使球拍重量在可接受範圍內。 (5) The cross section of the face may have any shape or size as long as the resulting tennis racket is strong enough to support the tension of the cable and the recess of the lockable buckle, but light enough to make the weight of the racket within an acceptable range. .

(6)本發明可鎖定扣環與接納凹穴的較佳實施例已如上述。不過，也有其他的可能方案，只要他們夠強到能支撐網線張力，而夠輕巧到能防止破壞被鎖定的網線，小到能配合適當大小的拍框，簡單到容易安裝，以及容易使用。使用已介紹過的基本觀念，可以方便地設計及建構這些替代方案。 (6) The preferred embodiment of the present invention for locking the buckle and receiving the recess has been as described above. However, there are other possibilities, as long as they are strong enough to support the tension of the cable, but lightweight enough to prevent damage to the locked cable, small enough to fit the appropriate size frame, easy to install, and easy to use. . These alternatives can be easily designed and constructed using the basic concepts already introduced.

(7)基於上述的理由，本發明較佳實施例使用可鎖定扣環。本發明使用之近似矩形的拍面形狀可獲得一些好處，而不需在網線上使用可鎖定扣環。若只在比大多數其他網線要短的網線上使用可鎖定扣環，以 降低在這些短網線上的張力，則所產生的球拍其性能仍會比傳統球拍佳。即使在任何網線上都不使用可鎖定扣環，只要大多數的直線與橫線的長度與張力大約相同，則所產生的球拍其性能仍會比傳統球拍佳，雖然會失去許多由可鎖定扣環提供的優勢。 (7) For the above reasons, the preferred embodiment of the present invention uses a lockable buckle. The approximately rectangular face shape used in the present invention provides some advantages without the use of a lockable buckle on the wire. If you only use a lockable buckle on a network cable that is shorter than most other network cables, Reducing the tension on these short wires will result in a racket that will perform better than a traditional racket. Even if the lockable buckle is not used on any network cable, as long as the length and tension of most straight lines and horizontal lines are about the same, the performance of the generated racket will still be better than that of the traditional racket, although many lockable buckles will be lost. The advantages offered by the ring.

(8)一般說來，金屬球拍比非金屬球拍要有較大的震動幅度及較低的震動頻率。不過，所使用的側向孔洞卻會減弱此效應。使用本發明之震動吸收機構，這些震動在抵達球員的手中之前就會被有效的散去。使用本發明的觀念還有其他消散這些震動的方法。但是，球拍震動的效應是主觀的，因此對許多球員而言，是不需要震動吸收機構的。 (8) Generally speaking, metal racquets have a larger amplitude of vibration and a lower vibration frequency than non-metallic racquets. However, the lateral holes used will attenuate this effect. With the shock absorbing mechanism of the present invention, these vibrations are effectively dissipated before reaching the player's hand. There are other ways of dissipating these vibrations using the concepts of the present invention. However, the effect of the racket vibration is subjective, so for many players, there is no need for a shock absorbing mechanism.

(9)單片結構具有上述的優點。但是，即使運動球拍是以組合不同元件的方式構成，仍可獲得許多這些優點。重要的是，此種分段式製造方式並不會明顯地增加球拍重量或降低其完整性。 (9) The monolithic structure has the above advantages. However, even if the sports racquet is constructed in a manner that combines different components, many of these advantages are obtained. Importantly, this segmented manufacturing approach does not significantly increase the weight of the racket or reduce its integrity.

(10)本發明揭露之拉線程序可確保所有的網線張力都設定在其預期的張力值，而拍面的形狀在拉線前及拉線後基本上都是相同的。也可以使用其他的拉線方法，但卻需要較強的拍框及可能會偏離預期的張力值。不過，若嚴格使用本發明的其他方法，則網線被拉緊的球拍，其性能仍會比傳統球拍佳。 (10) The wire drawing program disclosed in the present invention ensures that all the wire tensions are set at their intended tension values, and the shape of the face is substantially the same before and after the wire is pulled. Other pull methods can also be used, but require a strong frame and may deviate from the expected tension value. However, if the other methods of the present invention are strictly used, the performance of the racket with the cable being tightened will still be better than that of the conventional racket.

(11)本發明之網線張力關係可滿足本發明實施例之相等頻率與橫向對稱的要求，因此可提供威力、控制、甜蜜點大小、以及球拍重量的最佳可能組合。若選用其他的張力，則會降低一些最佳性能，但如果使用本發明之基本原則，則球拍的性能仍會超越傳統的球拍。 (11) The wire tension relationship of the present invention satisfies the requirements of equal frequency and lateral symmetry of the embodiment of the present invention, and thus provides the best possible combination of power, control, sweet spot size, and racket weight. If other tensions are used, some of the best performance will be reduced, but if the basic principles of the invention are used, the performance of the racket will still exceed that of a conventional racket.

(12)因為本發明較佳實施例的直線長度大約相等，而且橫線長度也大約相等，則只使用張力關係即可滿足相等網線震動頻率的條件，但仍在所有的網線上維持相等的線性質量密度。因為如果直線與橫線的頻率相等可得到更加的性能，以及因為若選用合理的張力，則通常橫線會太短而無法完成此目的，所以大多數較佳實施例會在(一些)個別的網線上使用不同的密度，以在所有的網線上得到相等的頻率，如這裡所討論的。對使用一個以上的網線密度感到不舒服的球員，則不需要使用此功能，因為即使近似本發明相等頻率的條件，也會使球拍的性能大幅超越傳統球拍。 (12) Since the lengths of the straight lines of the preferred embodiment of the present invention are approximately equal, and the lengths of the horizontal lines are also approximately equal, only the tension relationship can be used to satisfy the condition of the equal frequency of the line vibration, but it remains equal on all the lines. Linear mass density. Because if the straight line and the horizontal line are equal in frequency, more performance can be obtained, and because if a reasonable tension is selected, the horizontal line will usually be too short to accomplish this purpose, so most of the preferred embodiments will be in (some) individual networks. Different densities are used on the line to get equal frequencies on all the lines, as discussed here. For players who are uncomfortable with more than one cable density, this function is not required, because even if the conditions of the same frequency of the present invention are approximated, the performance of the racket will be greatly exceeded that of the conventional racket.

(13)本發明之較佳拉線裝置(第26圖)已被設計來對本發明較佳球拍上的所有網線進行拉線、拉緊及鎖定(使用本發明之可鎖定扣環)。使用本發明提供之齒輪組件，此裝置可被用來一根接一根的將網線定位，或將所有網線一次定位。而本發明之較佳手持式拉線裝置(第27圖)則一次定位一根網線，而且可被用來重新拉緊或更換任何網線。當然，使用本發明揭露之基本概念，也可以有不同的拉線方式。 (13) The preferred wire drawing device (Fig. 26) of the present invention has been designed to draw, tension and lock all of the wire lines on the preferred racket of the present invention (using the lockable buckle of the present invention). Using the gear assembly provided by the present invention, the device can be used to position the cable either one by one or to position all of the wires at once. The preferred hand-held cable pull device of the present invention (Fig. 27) positions one wire at a time and can be used to retighten or replace any wire. Of course, using the basic concepts disclosed in the present invention, different drawing methods are also possible.

本發明提供各組成元件及其組合的特殊實施例。而這些組成元件則為拍框、可鎖定扣環、產生相等頻率的張力、拉線程序、及拉線裝置。就威力、控制、甜蜜點大小、舒適度、及方便性而言，這些組成元件，尤其是其組合，會產生最佳可能的網球拍。 The present invention provides specific embodiments of the various constituent elements and combinations thereof. These components are the frame, the lockable buckle, the tension of equal frequency, the wire drawing program, and the wire drawing device. In terms of power, control, sweet spot size, comfort, and convenience, these components, especially their combination, produce the best possible tennis racket.

綜上所述，本發明提供一運動球拍與其製造方法，爰依法提呈發明專利之申請；本發明之技術內容及技術特點已揭示如上，然而熟悉本項技術之人士仍可能基於本發明之揭示而作各種不背離本案發明精神之替換及修飾。因此，本發明之保護範圍應不限於實施例所揭示者，而應包括各種不背離本發明之替換及修飾，並為以下之申請專利範圍所涵蓋。 In summary, the present invention provides a sports racket and a method of manufacturing the same, and an application for an invention patent according to the law; the technical content and technical features of the present invention have been disclosed above, but those skilled in the art may still disclose based on the present invention. And all kinds of substitutions and modifications without departing from the spirit of the invention. Therefore, the scope of the present invention should be construed as being limited by the scope of the appended claims

100‧‧‧運動球拍面 100‧‧‧Sports racket

110‧‧‧拍框 110‧‧‧ Frame

120‧‧‧角部曲率 120‧‧‧Corner curvature

130‧‧‧網線 130‧‧‧Network cable

132‧‧‧最長直線 132‧‧‧Longest straight line

134‧‧‧最短直線 134‧‧‧ shortest straight line

136‧‧‧最長橫線 136‧‧‧ longest horizontal line

138‧‧‧最短橫線 138‧‧‧ Shortest horizontal line

120‧‧‧圓形角部 120‧‧‧round corner

140‧‧‧長側 140‧‧‧Long side

150‧‧‧外短側或遠端 150‧‧‧Outside short or distal

160‧‧‧內短側 Short side of 160‧‧

170‧‧‧喉部 170‧‧‧ throat

110、140、150及160‧‧‧拍面邊側 110, 140, 150 and 160‧‧‧ face sides

130‧‧‧橫線 130‧‧‧ horizontal line

122‧‧‧遠端角部側 122‧‧‧ distal corner side

134及136‧‧‧橫線 134 and 136‧‧‧ horizontal lines

134及138‧‧‧短網線 134 and 138‧‧‧ short cable

132及136‧‧‧長網線 132 and 136‧‧ long cable

Claims (33)

一運動球拍，包含：一具有拍頭之球拍本體，該拍頭具有一矩形拍面及圓形角部的拍框，該拍框在其矩形拍面的四側上有許多預先安排之網線安裝位置；一固定在拍頭之球拍握把；許多整合在拍框中的可鎖定扣環，每一扣環位於一個網線的安裝位置；以及安裝在拍頭上網線安裝位置之網線，以形成直線及橫線部分，而可鎖定扣環可實作各直線與各橫線的張力。 A sports racket comprising: a racket body having a head having a rectangular frame and a rounded corner frame, the frame having a plurality of pre-arranged network lines on four sides of the rectangular face Mounting position; a racket grip fixed to the head; many lockable buckles integrated in the frame, each buckle is located at a mounting position of a cable; and a cable installed at the installation position of the tap cable. In order to form a straight line and a horizontal line portion, the lockable buckle can realize the tension of each straight line and each horizontal line. 依據申請專利範圍第1項所述的網球拍，其中，該拍頭比已知矩形網球拍具有更多圓形角部以及較短之外側，以提供比已知網球拍更佳的強度、更輕的重量及更大的甜蜜點。 A tennis racket according to claim 1, wherein the head has more rounded corners and shorter outer sides than known rectangular tennis rackets to provide better strength than known tennis rackets and more Light weight and a bigger sweet spot. 依據申請專利範圍第1項所述的網球拍，其中，曲形的角部產生受影響之網線及不受影響之網線，而受影響的網線可被製造成與不受影響的網線在相同的頻率下震動。 According to the tennis racket of claim 1, wherein the corners of the curved shape generate the affected network cable and the unaffected network cable, and the affected network cable can be manufactured into an unaffected network. The line vibrates at the same frequency. 依據申請專利範圍第1項所述的網球拍，其中，該每一根直線的頻率都相同。 The tennis racket according to claim 1, wherein the frequency of each of the straight lines is the same. 依據申請專利範圍第1項所述的網球拍，其中，該每一根橫線的頻率都相同。 The tennis racket according to claim 1, wherein each of the horizontal lines has the same frequency. 依據申請專利範圍第1項所述的網球拍，其中，該網線各有密度及直徑，而該各網線的張力、密度、及直徑係被選定使所有的直線與所有的橫線都具有相同的震動頻率。 According to the tennis racket of claim 1, wherein the mesh has a density and a diameter, and the tension, density, and diameter of the wires are selected so that all the straight lines and all the horizontal lines have The same vibration frequency. 依據申請專利範圍第1項所述的網球拍，其中，多個可鎖定扣環可設定網線張力，以在圓形角部內的較短網線上維持相等的網線震動頻率。 According to the tennis racket of claim 1, wherein the plurality of lockable buckles can set the wire tension to maintain an equal frequency of the wire vibration on the shorter wire within the rounded corner. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環具有一套筒可讓軸向網線通過，而各可鎖定扣環對各網線提供雙重固定功能。 The tennis racquet according to claim 1, wherein each of the lockable buckles has a sleeve for allowing the axial wire to pass, and each of the lockable buckles provides a double fixing function for each of the wires. 依據申請專利範圍第1項所述的網球拍，其中，該網球拍係由非管狀的金屬材料構成。 The tennis racket according to claim 1, wherein the tennis racket is made of a non-tubular metal material. 依據申請專利範圍第9項所述的網球拍，其中，該網球拍維持狹窄但強固的角部，並控制震動。 The tennis racquet according to claim 9, wherein the tennis racquet maintains a narrow but strong corner and controls vibration. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環夠強固到 可固定各網線至最高70磅的張力。 According to the tennis racket of claim 1, wherein each lockable buckle is strong enough to Each cable can be secured to a tension of up to 70 pounds. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環可實作一交替拉緊直線與網線的拉線程序，以在拉線過程中循序消除拍框任何明顯的彎曲。 According to the tennis racket of claim 1, wherein each of the lockable buckles can be used as a wire drawing program for alternately tightening the straight line and the net line to sequentially eliminate any significant bending of the frame during the pulling process. . 依據申請專利範圍第1項所述的網球拍，其中，該拍框具有兩組相對的邊側，該些邊側非常輕但穩定，因為各網線會對拍框的穩定度提供貢獻。 The tennis racquet according to claim 1, wherein the frame has two opposite sides, which are very light but stable, since each wire contributes to the stability of the frame. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環藉由在靠近拍框邊側之被選定的各網線上提供較低的張力，而放大甜蜜點。 The tennis racquet according to claim 1, wherein each of the lockable buckles enlarges the sweet spot by providing a lower tension on the selected mesh lines near the side of the frame. 依據申請專利範圍第1項所述的網球拍，進一步包括一等效的拉線機構，其中所有的網線係同時被拉緊。 The tennis racquet according to claim 1 of the patent application, further comprising an equivalent cable pulling mechanism, wherein all of the cable threads are simultaneously tensioned. 依據申請專利範圍第1項所述的網球拍，其中，多個可鎖定扣環可在各網線上精確地設定預期的張力。 The tennis racket of claim 1, wherein the plurality of lockable buckles accurately set the desired tension on each of the mesh lines. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環可調整各網線的張力及更換網線。 According to the tennis racket of claim 1, wherein each of the lockable buckles can adjust the tension of each network cable and replace the network cable. 依據申請專利範圍第1項所述的網球拍，其中，各可鎖定扣環在各網線上提供雙夾置機構。 The tennis racket of claim 1, wherein each of the lockable buckles provides a double clamping mechanism on each of the network cables. 依據申請專利範圍第1項所述的網球拍，其中，該雙夾置機構在網線上提供擴散的平衡力。 The tennis racquet according to claim 1, wherein the double clamping mechanism provides a diffusing balance force on the wire. 依據申請專利範圍第1項所述的網球拍，其中，該拍框主要由碳纖維構成，而該拍面周圍具有一埋入式的金屬條。 The tennis racket according to claim 1, wherein the frame is mainly composed of carbon fiber, and the surface of the face has a buried metal strip. 依據申請專利範圍第1項所述的網球拍，其中，該埋入式金屬條具有金屬柱體以置放扣環。 The tennis racket according to claim 1, wherein the embedded metal strip has a metal cylinder to place a buckle. 一運動球拍，包括：一具有拍頭之運動球拍本體，該拍頭具有一矩形拍面及圓形角部的拍框，以及拍框中定義拍面的區域，該拍框在其矩形拍面的四側上有許多預先安排之網線安裝位置，該拍框係由金屬構成；許多整合在拍框中的可鎖定扣環，每一扣環位於一個網線的安裝位置；以及安裝在拍頭上網線安裝位置之網線，以形成直線及橫線部分，而可鎖定扣環可調整各網線的張力。 A sports racket includes: a sports racket body having a head having a rectangular frame and a rounded corner frame, and an area defining a face in the frame, the frame being in its rectangular face There are a number of pre-arranged cable installation positions on the four sides, the frame is made of metal; many lockable buckles integrated in the frame, each buckle is located at the installation position of a network cable; The mesh line of the head wire is installed to form a straight line and a horizontal line portion, and the lockable buckle can adjust the tension of each wire. 依據申請專利範圍第22項所述的網球拍，進一步包括一提供甜蜜點之 拉線程序，該甜蜜點由一些網線構成，且幾乎佔據整個拍面。 According to the tennis racket of claim 22, further comprising a sweet spot The pull line program, which consists of a number of network lines, and occupies almost the entire face. 一網球拍之拉線方法，該拉線方法提供一種將扣環壓住網線的程序，且該拉線程序包括：將網線依序***扣環之中心孔、一外螺紋捲邊柱體、及一垂直之拉緊柱體之內及其周圍，該扣環具有一組相對的端部，其中一組端部為面向外側的端部，該螺紋柱體則具有一內凹的錐形壓痕；旋轉該拉緊柱體直到網線得到預期的張力；旋轉該螺紋柱體，使錐形壓痕移至扣環面向外側的端部，而將扣環的兩端壓住網線。 a method for pulling a tennis racket, the cable pulling method provides a program for pressing a buckle against a network cable, and the cable pulling program comprises: inserting the network cable into the center hole of the buckle in sequence, and an external thread curling cylinder And a vertical tensioning cylinder having a pair of opposite ends, wherein the set of ends is an outwardly facing end, the threaded cylinder having a concave tapered shape Indentation; rotate the tensioning cylinder until the mesh wire has the desired tension; rotate the threaded cylinder to move the tapered indentation to the outwardly facing end of the buckle, and press the ends of the buckle against the wire. 依據申請專利範圍第24項所述的拉線方法，其中，網線為多根網線，而拉線程序可同時拉緊所有的網線。 The cable drawing method according to claim 24, wherein the network cable is a plurality of network cables, and the cable pulling program can simultaneously tighten all the network cables. 依據申請專利範圍第24項所述的拉線方法，其中該運動球拍包括：一具有拍頭之球拍本體，該拍頭具有一矩形拍面及圓形角部的拍框，該拍框在其矩形拍面的四側上有許多預先安排之網線安裝位置；一固定在拍頭之球拍握把；一整合在拍框上網線安裝位置中的扣環；以及安裝在拍頭上網線安裝位置之網線，以形成直線及橫線部分，而在網線安裝位置的扣環可實作各直線與各橫線的張力。 The wire drawing method according to claim 24, wherein the sports racket comprises: a racket body having a head having a rectangular frame and a rounded corner frame, wherein the frame is in the frame There are a number of pre-arranged cable mounting positions on the four sides of the rectangular face; a racket grip fixed to the head; a buckle integrated in the frame installation position of the frame; and a mounting position on the net of the head The wire is formed to form a straight line and a horizontal line portion, and the buckle at the installation position of the wire can realize the tension of each straight line and each horizontal line. 依據申請專利範圍第26項所述的拉線方法，其中，一拉線平台被用來對該運動球拍拉線，該拉線平台對具有一用於各網線之拉緊柱體，以及一用於各網線且含有螺孔的固定結構。 The wire drawing method according to claim 26, wherein a wire drawing platform is used for pulling the moving racquet, the wire drawing platform has a tensioning cylinder for each wire, and a A fixed structure for each wire and containing a screw hole. 依據申請專利範圍第27項所述的拉線方法，其中，各螺孔容納一螺紋柱體，該螺紋柱體具有一向內的端部及一外端部，該向內端部為一捲邊工具，該螺紋柱體被螺入螺孔中，而螺紋柱體的外端部則移入扣環孔並捲繞該扣環。 The wire drawing method of claim 27, wherein each of the screw holes accommodates a threaded cylinder having an inward end and an outer end, the inward end being a bead The tool, the threaded cylinder is screwed into the threaded hole, and the outer end of the threaded cylinder is moved into the buckle hole and wound around the buckle. 依據申請專利範圍第26項所述的拉線方法，其中，一手持式裝置被用來對該運動球拍拉線，該手持式裝置包括一拉緊柱體及一垂直的捲邊柱體，而該垂直的捲邊柱體可轉入一扣環，以將該扣環捲繞在由拉緊柱體來拉緊之網線。 A wire drawing method according to claim 26, wherein a hand-held device is used for pulling the sports racquet, the hand-held device comprising a tensioning cylinder and a vertical crimping cylinder, and The vertical crimping cylinder can be turned into a buckle to wind the buckle around the wire that is tensioned by the tensioning cylinder. 依據申請專利範圍第24項所述的拉線方法，進一步包括許多扣環與許 多網線，其中各網線由個別的拉緊柱體來拉緊，而且所有的拉緊柱體都會同時轉動。 According to the wire drawing method described in claim 24, the method further includes a plurality of buckles and Multi-wire cable, in which each cable is tensioned by an individual tensioning cylinder, and all the tensioning cylinders rotate at the same time. 依據申請專利範圍第30項所述的拉線方法，其中，所有的拉緊柱體利用齒輪同時轉動。 The wire drawing method according to claim 30, wherein all the tensioning cylinders are simultaneously rotated by the gears. 依據申請專利範圍第31項所述的拉線方法，其中，該齒輪係位於一平台的下方。 The wire drawing method according to claim 31, wherein the gear train is located below a platform. 依據申請專利範圍第30項所述的拉線方法，其中，各拉緊柱體具有一直徑以在拉緊網線時，提供各網線預期的張力。 The wire drawing method according to claim 30, wherein each of the tensioning cylinders has a diameter to provide a desired tension of each wire when the wire is tightened.