TW294600B - - Google Patents

Description

2J46u0 A7 ______B7 5. Description of the invention () The present invention relates to tennis ball parking, especially in respect of the racket frame made of reinforced resin, which improves the strength of the top that is most susceptible to distortion and damage to the tennis racket frame. In other words, no matter the network cable is set in the frame, or the net surface is thrown or the frame is hit when playing the ball-occasions, the distortion of the frame is the top, so the top of the frame is the most vulnerable to this. , W has taken countermeasures to reduce the damage by strengthening the moth dimension of the top by part of the pool: However, the method of increasing the amount of reinforcing fiber increases the weight of the top, so that in order to balance, the handle must be filled with a large amount of lead. As a result, there are shortcomings that increase the weight of the ball and make it difficult to manipulate the ball: Furthermore, if the amount of reinforcing weave on the top is increased, the outer diameter of the reinforcing fiber is large, as in the fifth (A> < Β) surface, when the strengthened_dimensional F is inserted into the metal mold 1 (lower mold 1 A, h mold 1B, middle mold 1 Π wedge 2), the bonding surface G of the gold exposure mold 1 is easy Stiffening of the reinforcing fiber occurs: again, and use In comparison with the cross-sectional circumference of the cavity 2 of the formed top, the outer circumference of the reinforced fiber becomes larger, so that the reinforced fiber deflects inward, and the formed top is prone to wrinkles. According to the recent manufacturing of tennis balls Method, due to the consideration of automation, the reinforced fibers are mostly woven in the shape of a quilted set of wing-shaped wings, or a sleeve-shaped fiber is formed by the filament winding method. These reinforced fibers are placed in a metal mold in advance, and M is injected The reaction injection molding resin in the metal mold is used as the matrix resin to manufacture the racket frame. The K uses pre-formed sleeve-shaped reinforcement. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm); I n I — Packing — Order — Line II (please read the precautions on the back before filling in this page) Printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ^^ 46〇〇A7 B7 V. Description of the invention () The fiber is due to the configuration When in the metal mold, the reinforcing fibers are not impregnated with resin raw materials, so that the positioning of the fiber lobe is not easy. For this reason, it is necessary to create a fiber shape with good workability in advance. This fiber is in the _ 雒Luo not included crook for bonding to each other to the adhesion between the resin rejection, so compared to the use of a fiber impregnated with resin adhesive money Luo made ready to W1 ay uP), the perimeter of the cross section becomes large. In particular, as the amount of strengthened dimensionality is increased in order to increase strength, the larger the circumference, the more wrinkles are likely to occur. This kind of problem also occurs when the combed yarn wing H and the filament winding yarn wound by the osmium dimension formed by the thermoplastic resin and the reinforcing fiber are heated and pressurized, and the formed ball is lifted. The purpose of the present invention is to eliminate the problem described in h, that is, the increase in weight and the generation of wrinkles, and to increase the strength of the top, and to replace the increase in the amount of the reinforced fiber in the conventional top to increase the strength. In order to achieve the stated purpose, the present invention is insulting to set the ratio of the thickness in the out-of-plane direction of the top to the thickness in the in-plane direction to be greater than that of the conventional ones, while setting the perimeter of the cross section to be slightly equal to or smaller than that of the conventional ones. In order to increase the strength of the top without increasing the weight, it is unique. Printed by the Staff Consumer Cooperative of the Central Department of Economic Affairs of the Ministry of Economic Affairs (please read the precautions on the back before filling in this page). That is, the purpose of the present invention is to provide a ball lift, and its special purpose is to set the top cross-sectional shape of the frame to : The thickness in the in-plane direction (W1) is l2rara ~ 17 «1111; and the relationship between the thickness in the out-of-plane direction < (^ 2 > and the thickness in the in-plane direction < ^> W2 / W1 is 100% ~ 170% Although it is well known in the technical field, but if you do not bother to elaborate, the so-called "out-of-plane direction" in the racket frame refers to the frame of the frame. The paper size is suitable for the Chinese national standard (CNS ) A4 specification (210X297 published) A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention () In general, the so-called _in-plane direction refers to the direction orthogonal to the playing direction of the frame, Μ In terms of the chord direction of the chord: the reason why the thickness of the above top (B inward direction (W 1 >) is set in the range of 1 to 17 m is: if it is not greater than 12 mm, the comparison cannot be obtained Know more strength, and if it exceeds 17mm, it is only because of out-of-plane The thickness of the direction should not be too small, so that the perimeter of the cross section is too large, which results in an increase in weight; In addition, if it exceeds 17 mm, the air resistance during swing becomes large and it is not easy to manipulate: and the above W2 / The reason why W1 is set at 10096 ~ 170% is as follows: if the rigidity in the out-of-plane direction becomes smaller at 100% Μ, the ball's elasticity is reduced when playing the ball: in addition, sometimes the top will hit the floor. When the top is under the impact load * Therefore, in order to resist the impact of the ®, it is necessary to maintain the strength of 1 () 〇M h: on the other hand, if it exceeds 1 70% or more, the in-plane direction has to be changed due to the circumference With a thickness of 12 ramW, this will result in an inability to increase the strength of the part. In addition, in the present invention, the frame (the appropriate position part) where the ball is most susceptible to hitting when playing the ball, that is, from the center of the net surface The side portions of the two sides of the horizontal line h are in the range of 30 ° in the axial direction, and the thickness d in the out-of-plane direction is set in the range of 22mir ~ 32mm, and the rigidity in the out-of-plane direction is increased to improve the elasticity by Μ. The face is regarded as the clock face, and the center of the Μ-mesh face is regarded as the hour and minute hands When passing through the fulcrum, it passes through the sides on the horizontal line of the center of the above-mentioned mesh "at the position of .3 points; and the position of the publication from this position to the axis direction is the position of 4 points, so the following is referred to as 3 points to 4 o'clock position. The thickness of the above frame from 3 o'clock to 4 o'clock in the out-of-plane direction is set as the paper scale. The Chinese National Standard (CNS) Α4 specification (210Χ297 mm) --τ-,- -: I installed-- (Please read the precautions on the back before filling in this page) Order the A7 B7 printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs 5. The description of the invention () is set in the range of 22mm ~ 32m because If the rigid stem is less than 22mm, the springback will be reduced. On the other hand, if it exceeds 32mni, the perimeter of the cross section becomes too large, which will result in an increase in weight. In addition, although the resilience is good, the poor control due to too good will cause a defect that is not easy to spin the ball <: In addition, in the present invention, the above-mentioned frame cross section at 3 to 4 points is fixed to a long length ( L2) is related to the perimeter of the top section (L Γ! Described in h), and is set in the range of L2 / U in the range of 90% ~ 1 10%. That is, although at the top, the thickness in the in-plane direction is set to be larger | other On the one hand, the thickness in the out-of-plane direction is set to be larger at the position from 3 to 4 o'clock, but the perimeter of the cross section is still set to be approximately the same or close to the length. It is best to set it to the same length. Outside the range of 90% ~ 1 10%, the difference in circumference becomes too large, it is not easy to pre-form the reinforced shovel into a sleeve shape, and the part with larger circumference is easy to snap into the joint surface of the gold drive mold, and wrinkles are easily generated As mentioned above, if the perimeter of the cross-section is set to be slightly the same length, the wing H in the shape of a forming sleeve or the reinforcement strand formed by winding the filament can be used to make the reinforcement of the specified fiber structure. The dimension position is at the design position, at the same time, it can prevent the wrinkles of the reinforced fiber. If the dimension can be wrapped around the specified dimension When considering positioning at a predetermined position M of a design and improving the workability, it is best to use a sleeve-shaped wing woven from the above-mentioned continuous fibers or formed by the filament winding method. Therefore, in Among the strengthened strands, 50% Μ is made of the above-mentioned sleeve-shaped wings or formed by the filament winding method. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) i I n / I 1 I Order I 11 line (please read the precautions on the back before filling in this page) A7 B7 Printed by the Peking Consumer Cooperative of the Central Standard Rating Bureau of the Ministry of Economic Affairs 5. Description of invention () The tennis racket of the present invention will be The cross-sectional shape of the frame is as described above. At the same time, the above-mentioned reinforced strands are pre-arranged in the cavity of the gold mold, and the injection molding resin is reacted, for example, RI Μ 黾 龙 or 1, 3 cyclopentadiene (cy clopentadiene) as the matrix The resin is injected into the mold cavity, impregnated with reinforcing fibers on one side to cause polymerization reaction and then hardened. It is shaped into a predetermined shape and a tennis racket is made by W. The above-mentioned R 1 Μ 隆 龙 (R 丨 Μ ny 1 ο η) is formed by the monomer casting method, that is, the <; internal amides containing the polymerization catalyst and the initiator are injected into the mold cavity of the golden hurdle mold, and then heated to form a meal: # amine. As The ω-endopyridine amines used in the above-mentioned monomers can be: α-pyrrole (: py rr ο 1 id οn e >, ex -pyridinone < α-pi pe ri dοne >, ω -Caprolactam (ω -_ capro 丨 actam), ω .. Geng inner brewing limb (ω-ena 丨 丨 th ο 1 aftam > ), Ω-._f internal amide press ((/ factory-P e t. Arg ο η ο 1 actam), ου-decyl acetamide (ω-deca η o U ctab〇., Undeca amide η o 1 actam >, ω-dodecanoylamine (1 aur 〇 丨 acta nt), or the c-alkyl substitution of these ω-lactam, and two or more of these ω-lactam Amine mixtures, etc. In addition, ω-lactam may contain an improved component (soft component) as needed. As the soft component, polyether or liquid polybutadiene having a functional group corresponding to the initiator used in the molecule, a low T g compound, and a general functional group can be used. The commercially available raw materials that can be used as t 說 ω- 内 _ are Ube Kogyo Co., Ltd. ϋ Β nylon / tl; /-21), which is composed of component A (from the basic bracelet paper size to the Chinese national standard ( CNS) A4 specification (210X297mm) ~~~ ---------; --- "-installed ------ order ----- line (please read the precautions on the back first (Fill in this page) 2d 46ϋ0

Α7 Β7 < Description (composed of medium and caprolactam) and component B (composed of a prepolymer containing a soft component and caprolactam). The polymerization catalyst described above is preferably sodium hydride, but other well-known polymerization catalysts of ω internal amides such as sodium, potassium, and lithium hydride can also be used, and the addition amount is preferably ω-internal amides. 1 ~ ( ). 5 mol% range: In addition, as a polymerization initiator, N __ acetyl ε caprolactam can be used, and other allyl isoflurates and N can be substituted for ethyleneimine derivatives ,], 1 · -called base diazepine Π. 1 '-C arb ο ny 1 bisaziridine > llg _ Lin derivative (〇xazo 1 inederivat 丨 ve), 2-< N-phenyl Benya _Amino) acetanilide, 2 + morpholinocyclohexyl .1, V dicarboxyl compounds and other known isocyanate, carbodiimide and other compounds. The addition amount of these polymerization initiators is preferably in the range of .05 to 1.0 mol% of ω-lactamamide. When cyclopentadiene is used as the matrix resin, in addition to the use of dicyclopentadiene, It is still possible to use dicyclopentadiene, tricyclopentadiene, tetracyclopentadiene, cyclopentadiene-methylcyclopentadiene copolymer, etc. as the polymerizable monomer (please read the note on the back first) (Enter this page again) i 丨 装 _

. • IT Line Ministry of Economic Affairs Central Standards Bureau employee consumption cooperation Du Print 1: The polymerization catalyst of cyclopentadiene resin can use tungsten, molybdenum, tantalum and other halogenated compounds, halogenated oxygen compounds, oxides, organic ammonium salts, etc. . For the initiator (active agent), organic gold * compounds, alcohols, phenols, and other oxygen-containing compounds such as gold-driving emulsified compounds in the 丨 group to π! Groups of the M periodic table can be used. In addition, the solution polymerization reaction containing the above catalyst and active agent is very rapid, so that it may be hardened before fully flowing into the gold drive wedge for forming. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm ) 9 A7 B7 printed by the Consumer Labor Cooperative of the Central Prototype Bureau of the Ministry of Economic Affairs V. Description of the invention (), so it is best to use alkylene glycol or ethylene glycol compounds selected from polyalkylene glycols And / or monoester as an activity modifier. Among the resins used as matrix resins in reaction injection molding, in addition to the above R1 M nylon and cyclopentadiene M, there are epoxy, urethane, and the like. When the matrix resin is injected into the metal mold, the gold * temperature is usually maintained in the range of 40s ~ 1 30 °, and the polymerization reaction is carried out for 1 ~ 5 minutes. In addition, in order to promote the monomer to be arranged in the metal mold cavity in advance In order to strengthen the penetration of the inner thread, it is best to make the Golden Hedge Wedge mold cavity into a decompression state. The above reinforced fibers can be used: carbon fiber, glass fiber, bauxite, silicon carbide, mesh, amorphous metal fiber, aromatic polyamide, polyester fiber, nylon fiber, polyethylene fiber And / or mixtures thereof. The function of the present invention is explained below. Since the tennis racket of the present invention, as described above, the thickness of the top in-plane direction is set to a size of 12 mm to 17 mm, and the ratio of the out-of-plane direction to the in-plane direction is set to a larger ratio of 100% to 170%, so The strength of the top can be increased without increasing the perimeter of the section. Therefore, there is no need to increase the amount of reinforcing fibers on the top as in M, so that it can be prevented from becoming difficult to swing and manipulate the racket due to the increase in the weight of the top, and at the same time, it can prevent the weight of the grip portion from being increased for balance so that the entire ball park The defect of increasing weight. In addition, in tennis rackets, since the easiest time to hit the ball from 3 o'clock to the size of this paper, the Chinese National Standard (CNS) Α4 specification (210Χ297 mm) 10---- Γ --.---- ^ I installed ------ ordered -----. Line (please read the notes on the back before filling in this page) Printed 294600 A7 _B7_ by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of invention () 4 The thickness of the point part in the out-of-plane direction is set to be large from 22mm to 32mm, so it can increase the rigidity of the frame, M increases the rebound force, thereby improving the flying performance of the ball. The ratio of the cross-sectional circumference of the top is set to be slightly equal to 90% ~ 11 ()%, so it is easy to pre-form the sleeve shape. As a result, the reinforced strands of the sleeve formed by the blending or filament winding method can be used. When it is arranged in the wedge of the metal mold, it is not easy to catch the reinforced fiber lobe on the joint surface, and it can prevent the wrinkles from being generated in the ball lifting frame made by the reinforced worm dimension being deformed and deformed. Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the racket 10 shown in FIG. 1, the cross-sectional shape of the frame 1 2 surrounding the net surface 11 is the cross-sectional shape of the portion from the vertex P1 of the top 13 to the end point P2 under the side of the grip 丨 4 · As shown in Figure 2.

That is, it is composed of a slightly octagonal frame and is connected to the inner surface portion 15 * M of the mesh surface Π and the mesh wire mounting portion 1h which is opposite to the inner surface portion 1 There are cable penetration holes 15a, 16a. In addition, there are inner surface side push-out portions 1 7A, 1 7B inclined from the inner surface portion and each end portion of the network cable mounting portion 16, and the outer side push-out portion 18 A, 18B; and, between the inner and outer push-out portions 17A and 17B, between 17B and 1SB, there is a connecting portion parallel to the mesh surface, 19B on the cross-section of the frame 12 above, and The mesh plane parallel giant penetrating wire through holes 15a, 16a of the wire (string wire > 5 penetrating direction becomes the in-plane direction X; and the out-of-plane direction orthogonal to the in-plane direction X becomes the out-of-plane direction Y 0 The thickness of the in-plane direction X of the frame (W 1) refers to the paper size from the inner surface 15 to the Chinese nursery standard (CNS) A4 specification (210X297 mm); ^ I — I order (please first Read the precautions on the back and fill in this page) A7 B7 5. Description of the invention () From the dimension of the inner end surface to the outer end surface of the recess 1 b; the thickness of the so-called out-of-plane direction Y (W2 > refers to the dimension between the outer end faces of the connecting parts 1 and 19B on both sides _: _ In the embodiment of the present invention, at the top and the symbol 2 (> 3 points to 4 shown in Figure 1) The part of the point, that is, the part of the side of the horizontal line L h passing through the center 0 of the mesh surface 11 at an angle of 3) in the axial direction, the thickness (W 1) of the in-plane direction X, the out-of-plane direction The thickness (Iv2 ') and the perimeter of their cross-section (1.) are respectively set to the dimensions in the following table. ------------ installation ------ order ------ Line (please read the precautions on the back before filling in this page) The paper standard printed by the Employee Consumer Cooperative of the Central Bureau of Samples of the Ministry of Economic Affairs applies the Chinese National Standard (CNS) A4 specification (210X297mm) V. Description of invention () Ministry of Economic Affairs Printed weight m wrinkles produced by Central Bureau of Standards and Staff Consumer Cooperatives ^ 1¾¾) Top compression strength Qi S? A CO a mi3 §g '»« · «· Perimeter (LI) (mB〇—aa · 0 ^ Sl gradually a sa- Yitong riding perimeter (LI) (mm> *: B1 to —a a- ίϊ plane dip a ^ 3 · m to m p- to 100¾ S H- * \ D CO 23.0 to os H- * VjJ o 1— * 〇Example 1 CO un m poor rebound ISJ \ D 1002 g 1— * Private OJ Ο I— »〇g Η-» VJJ 20.0 Hk o Example 2 to P- slightly w to rock \ 〇H- * 54.5 to to o 10.0 s > — * o -> oh— »Each o Example 3 CO o Wr m to to OO ie ΟΙ CO DO 22.0 \ 〇os H— * Private OJ ot— * o Example 4 CO Office 5® Slightly 5Φ to 1— * 108¾ H- * OO on to 〇13.0 s h- * Private OJ o I— * o Example 5 to hang W to to oo 114% 68.5 1— * -s) I -— * CO o 1 -— * 〇s h- * Do OJ so 1— »o Example 6 UJ 0〇 is slightly heavier m W CO OJ 100¾ CT 'private h—» VJ1 22.0 H- * o (— * U1 22.0 > — * o Example 7 mm Bounce back bad CO H- * 100¾ lti oo h— * to H- * * <] o H- * to o Ln to H- * to 1— * 〇12.0 Example 8 _1 OJ I— ^ Ul 5® m poor rebound to 100% oo υο 1— * Ln -j 1— * μ ~ * > o 0〇t— * 4 ^. OJ t— »1— * 1 —- * 〇Comparative example 1 V > J U1 OJ is heavy and bad m 5® to u > CO 100¾ CTN OO I— * ΓΟ h—k 〇0〇I— * 2 CO each 1— * 〇Comparative Example 2 This paper scale is applicable to China National Standards (CNS) A4 (210X297 mm) ) 13 Xie Yi ----- ---- I I installed ------ order ----- 0 (please read the note Ϋ on the back before filling this page)

A7 V. Description of the invention () As shown in Table 1, the table illustrates examples] to 8 of Example 8 $ Real gown example: In the real caesium example of the present invention, it is the in-plane direction X of the top 13 The friction degree (W 1) is set in the range of Umn ~ 17mm, preferably, it is set in the range of 1 J mm ~ 1 4 m in_ and the thickness of the top surface B of the direction Y (1 ^) Set so that the ratio of 0 / k 1 is in the range of 1 00 ~ 1 7 (), preferably in the range of 1 40 ~ 1 60, that is, the thickness in the rich in-plane direction (W1) is in the "" Umm ~ 14. In the range of Omm, set the thickness (K2) of the external force of S in the range of 17.0mm ~ 20.0mm. Furthermore, set the perimeter of the cross section of the top 13 (L 丨) to 52mm ~ Minin. Within the range-On the other hand, at the portion 20 of the frame 12 from 3 o'clock to 4 o'clock, the thickness of the out-of-plane direction Y is set to be greater than the thickness of the top 13 in the out-of-plane direction 2), it is best to set it at In the range of 2 2 mm ~ 3 2 mm, in Example 1, it is set to I 7mm, so that it is the same thickness as the maximum thickness of the projected part 1 and in the part from 3 to 4 + ¾ " (), Set the thickness (1) in the in-plane direction X to a smaller range, That is, in the range of 4. (limn ~ 1 4.0 mm), although the thickness in the out-of-plane direction (Wd is set to be large, the cross-sectional circumference (L2) is still set in the range of 52mni ~ 65mm as above Description * Set the perimeter of the top B (L 1:> 52mm ~ (, 4 «, and set the perimeter of the part from 3 o'clock to 4 o'clock (L2) to 52mm ~ mm of the same length, so that L2 / The ratio of L 1 enters the range of 9 ()% ~ 1 1 〇%, and the size of the top 1 3 and the part 2 1 from 3 o'clock to 4 o'clock is gradually set from the size of the top 丨 3 The paper size changed from 3 o'clock to 4 o'clock. The Chinese National Standard (CNS) A4 specification (210X297 turbulence) ---------— installed ----- 1T ----- : Line π Chu Xian shouted to read back Donghun Hun contention ^ Nose fill in this printed by the Ministry of Economic Affairs Central Standards Bureau employee consumer cooperation Du printed 14-Printed by the Ministry of Economic Affairs Central Standards Bureau Beigong Consumer Cooperative A7 B7 V. Description of invention () Part 20 The size of the structured racket frame is shown in Figure 2 although its schematic cross-sectional shape is shown in Figure 3, but as shown in Figure 3, there are multiple layers of reinforced worm-dimensional F layers, which is larger than the inner screen with flexible Sex tube 30 that is, using the aforementioned Figure 5 (A &gt; (& &gt; Metal mold shown), Η reaction injection molding method to make the shape of the aforementioned frame: As shown in the mold surface of the mold M under the gold drive mold 1 above, pre-insert molding Sleeve-shaped reinforced fibroin F, and then the middle mold and finally the upper mold are sequentially added with W wedges, and the reinforced_dimensional F is arranged in the closed mold cavity. In addition, the reinforced fiber F formed in the form of blending or filament winding is formed in a sleeve-free shape on the outer peripheral surface of * 30, and it is arranged in gold with the tube M * ι4 ^: When will strengthen_ Dimension F is arranged in h described gold mold 1, because the perimeter of the reinforced moth Luo F is made to be approximately so that it does not partially protrude, so W can prevent the reinforcing fiber is stuck in the joint surface G of the metal mold 1; It is not necessary for K to flex the reinforced dimension F on the inner surface side, so M can prevent wrinkles in the frame: As described in ..t, the manufacturing steps of the tennis ball lifting include: configure the reinforced reel F In the mold cavity 2 of the golden mold 1; after the mold is closed, one side of the tube corresponding to the inner peripheral surface of the reinforced halo F is supplied with the required pressure air, and the reaction injection molding resin is injected into the mold cavity 2; This resin-side is impregnated with reinforced Luo F, and a polymerization reaction occurs on one side to harden it. [Experimental Example: The racket frame of Example 1 of the foregoing table was manufactured. The size of this paper is applicable to the Chinese National Standard (CNS) M specifications (210X297mm) ^; I binding I equipment, (please read the precautions on the back before filling in this page) Beigong Consumer Cooperative Printed 204600 A7 B7 V. Description of invention () That is, a ball-lifting frame is manufactured: the thickness W1 of the top 13 in the in-plane direction is 14mm, and the thickness 1 * 2 in the out-of-plane direction is 20ram; W2 / W1 is 140%; 3 points The thickness of the in-plane direction (W 丨) of the part 20 to 4 o'clock is 12 mm, and the thickness of the out-of-plane direction (W2 &gt; is 23 mm; the break of the item 20 and the part 20 from 3 to 4 o'clock) The surface perimeters L 1 and 1.2 are both 60 ntm: the manufacturing steps are as follows-using Tohogong [BC76h4 24 (20), B (.: 73t) 4 45 (20), BC77 3b4-24 (20) The cylindrical fin is used as the reinforcing fiber F. In the surface treatment of the reinforcement_dimensional, the alcohol-soluble nylon (K-.80) made by Toray (Dongb) is used. Then, the reinforcing fiber described in h is arranged in advance Insert the flexible tube 30 into the inside of the sleeve-shaped reinforcing fiber F in the gold bull mold shown in the third picture. Then, inject air into the interior of the tube stream so that it can be pressurized to the required pressure. Κ I Ｍ nylon non-anti-monomer (the A raw material made by Ube Industries, A and B two liquid (each () (Π,) mixed, and then injected into the mold cavity 2 of the metal mold 1 so that it penetrates into the configuration When the reinforcing fiber F of the mold cavity 2 is filled, supply 3 kg / cma to the inside of the tube 30. Set the temperature of the metal mold 1 to 1 7 (rC, and set the polymerization time to minutes The weight of the reinforcing fiber F pre-arranged in the above-mentioned metal mold 1. is 1: the weight of the formed frame is 325g. The mesh surface shape of the frame, the weight of the reinforced reel and the added T condition of the wire are the same as the above. Example] At the same time, the same matrix resin and reinforcing fiber were used to perform the experiments of Examples 2 to 8 shown in the table, and a ball parking frame was manufactured. The paper size is applicable to the Chinese National Standard (CNS) A4 specification ( 2 丨 0 侂 297mm) ^: —Binding I-line (please read the precautions on the back and then fill out this page) A7 B7 printed by Beigong Consumer Cooperative of Central Central Bureau of Economics of the Ministry of Economic Affairs As shown in the table, κ is the same as the above experimental example, and the thickness in the in-plane direction of the top B is manufactured W 1) is 1 1 (Comparative Example 1) which is outside the scope of the present invention, and the top surface 13 has an out-of-plane thickness (W 2:> / in-plane thickness U 2) of 174% (Comparative Example 2) Pull the frame. Then use the racket equipped with the frame of the above Example] to Example 8 M and Comparative Examples 1 to 2 to perform the top pressure test shown in Figure 4, that is, the frame is fixed by the support 3 1 Between the side and the yoke, the lower side of the playing surface, M will keep the ball park vertically, and then M 50ram / min fixed speed to move the pressure die 32 to the top B, and collide with it. Install the load cell (not shown) on the compression insert. K detects the load value. 0 The top compression strength measured by the above test is <kgf> as shown in the table. In addition, Example 1 to Example 1 and Comparative Example 1 to Comparative Example 2 were checked for wrinkles, and the results are shown in the table h. As shown in the table, regarding the compressive strength indicating the strength of the top 13, the thickness (W1) in the in-plane direction is set to 14 IDD1 in Example 1 to Example 7. Has 227kgf ~ 234kgf; set to 12mm embodiment 8 &amp; has 21H (kgf): For this * Comparative Example 1 with a thickness of 11 min in the in-plane direction has 202 kgf. It can be seen that, compared with the comparative example, the strength of the top is increased, and the thickness in the in-plane direction (Wl &gt; is a comparative example of 14bb, although the strength of the top is the same as the strength of the top, but the thickness in the out-of-plane direction (W2> ; 24 · 4mm, W2 / W1 is 174%, and the weight is 353s, so it has the disadvantage of not easy to manipulate the racket. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1 7-I 11IJ —] ~ 1111 Order 111. ^ (Please read the precautions on the back before filling out this page) A7 B7 printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention () Put the 3 o'clock to 4 o'clock part of the frame out of face Thickness (W2> Example 2 and Example 8 set to less than 22mm is the result of poor rebound performance of 7 balls under actual play test. This is because the thickness in the in-plane direction is small, and the frame It is confirmed that the rigidity is reduced and the rebound of the ball is reduced. The thickness (W2) in the out-of-plane direction of the 3 o'clock to 4 o'clock portion is preferably 22 mm Μ ±, and the perimeter of the cross section of the top 13 is α η and: Relationship between 3 o'clock and 4 catfish part 2Π cross-section perimeter α 2 &gt; 1 . 2 / LJ, when it deviates from the range of (κ)% ~ 110%, it will show that wrinkles will inevitably occur. When it deviates from 100% (perimeter) and approaches 9096, 11096, it shows that a little wrinkle has occurred, so finally It has been confirmed that from the viewpoint of preventing the generation of wrinkles, L2 / L1 is preferably in the range of ~ 110%, especially the same length. The effect of the invention is shown by the description on Μ, the tennis of the invention The racket is made of the cross-sectional shape of the frame, and the thickness in the in-plane direction of the top is 12 mm. Therefore, it can increase the strength of the part that is most susceptible to skew loads and is easy to damage the racquet, and can improve the durability of the racket. And a, if you only increase the thickness of the in-plane direction of the top, the weight will increase | Therefore, the thickness of the out-of-plane direction is suppressed to less than 170% of the in-plane direction: So, although the thickness of the in-plane direction is reduced Make it larger, if it does not increase the weight, it can prevent the defect that it is not easy to swing due to the top weight, and it is not easy to manipulate. In addition, 3 points to 4 sides on both sides of the appropriate position where the ball is most likely to collide The paper scale is applicable to China National Standard (CNS) A4 specifications (21〇X297mm) IIII Order IIII 'line (please read the precautions on the back before filling in this page) Employee's consumer cooperation of the Central Prototype Bureau of the Ministry of Economic Affairs Du Print 2 ^ 4600 A7 B7_ V. Description of invention () In part, because the thickness in the out-of-plane direction is 22 inm. The above 'wrong to improve the rigidity of the frame, so M can improve the rebound performance' has the advantage of easily rebounding the ball: Furthermore, because the top (M thickens the above surface The thickness in the inner direction is ideal) and the part from 3 points to 4 mm (M thickening the thickness in the above-mentioned out-of-plane direction is ideal) made slightly the same-a perimeter of the cross-section, so wrinkles are not easy to produce, A can be used The reinforced protruding dimension formed by the mixed yarn or filament winding method is made into a sleeve shape, so that the predetermined payment structure can be placed at a predetermined position. The reinforced dimension can be configured according to the design. In addition, since the reinforcing fiber is impregnated with the resin for reverse injection molding in advance, and RIM nylon or cyclopentadiene is used as the matrix resin for the injection molding of the reaction, this wow resin has vibration absorption and strength. Therefore, the performance of the drawn ball can be improved. Brief description of the drawings Figure 1 is a plan view of a tennis racket; Figure 2 is a two-sided view of the frame surrounding the net of the ball lifted in Figure 1; Figure 3 is a partially enlarged view of Figure 2; Figure 4 is a top pressure The schematic diagram of the test equipment; Figure 5 is the gold hurdle mold for the ball-lifting frame, where (Α> is the oblique view of the lower mold, &lt; Β) is the cross-sectional view of the gold bull mold, and the symbol description 1 metal mold 2 Mold cavity 10 Tennis racquets The paper size is applicable to Chinese national standards (CNS & Α4 specifications (210Χ297 mm) ----------- 1 I equipment ------ order ------ , Line (read the precautions on the back and then fill out this page) V. Description of invention (A7 B7

11 12 13 14 20 F W1 ^ 2 U L2 XY The mesh frame surrounds the mesh part of the frame. The handle is strengthened from 3 to 4 points. _Dimensional thickness in the in-plane direction and thickness in the out-of-plane direction The cross-section of 3 o'clock to 4 o'clock, perimeter, in-plane direction, out-of-plane direction, i ii n ~ n I, binding i line (please read the precautions on the back before filling this page), printed by the Consumer Cooperative of the Central Standards Bureau, Ministry of Economic Affairs The scale is applicable to China National Standard (CNS) A4 specification (210X 297mm)

Claims (1)

Beta don't do the period of correction / correction / supplement C8 D8 VI. Patent application scope No. 83 10 8 767 Patent application scope amendment amendment date: March 1985 1. A tennis ball, 萁 @Frame 系 uses continuous payment The sleeve-shaped fins or the fiber preforms formed by ϋ are used as \ ::: ^ reinforcing fibers, ¥ this valvi preform without S resin is placed in a metal mold and then filled with resin to form, It is characterized by: the cross-sectional perimeter (L2) and the cross-sectional perimeter (L1) of the top part of the horizontal line passing through the side of the horizontal line passing through the center of the mesh surface in the range of 30 ° to the axis direction L2 / L1 is set in the range of 90% ~ 110%; the shape of the top section of the frame is set so that the thickness in the in-plane direction (W1) is 12ram ~ 17m, and the thickness in the out-of-plane direction (W2) is in-plane The relationship between the thickness of the direction (W1) W2 / W1 is in the range of 1Q0% ~ 170%. 2. The racket according to item 1 of the patent application scope, in which the side portions on both sides of the horizontal line passing through the center of the net surface are within 30 ° in the axial direction, and the thickness (W2) in the out-of-plane direction is set at 22m ~ 32 mm. Binding line (please read the precautions on the back before filling in this page) Printed by the Ministry of Economic Affairs, Central Bureau of Standards, Negative Consumer Cooperatives This paper size is applicable to China National Standard (CNS) A4 (210X297mm) -21-