TW552150B - Ball bat for baseball or softball use and its manufacturing method - Google Patents

Abstract

To provide a ball bat with using a less amount of wood and will not lose the sense of use of a wooden bat while having a longer durability. A ball bat 1 includes: a striking part 2, a conical part 3, and a holding part 4. The striking part 2 is made by a waste wood material (e.g. Fraxinus lanuginosavar. Serrata, Fraxinus japonica, Fraxinusmandshurica var. japonica, Fraxinus Americana, Acer mono, which can not be used to form a common wooden ball bat) to form a cylindrical shell 5 of the striking part. Next, the ball bat body, formed of a striking core 6a, a conical part 3 and a holding part 4, is made of an FRP composite material.

Description

552150 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to baseball or softball bats (hereinafter referred to as bats) ', especially to the use of wood waste, and the use of FRP (Fiber Reinforced Plastics) ) Form a bat to improve durability. [Knowledgeable technology] Wood bats have been using wood from the past (Fraxinus lanuginosa var · serrata, Fraxinus japonica, Fraxinus mandshurica var. Japonica). Generally, the above-mentioned Misaki (Fraxinus lanuginosa var. Serrata, Fraxinus japonica) can be used in the state of logs, but recently, these wood resources have been exhausted and difficult to obtain, and an imbalance between demand and supply has occurred. In addition, although the United States (Fraxinus mandshurica var. Japonica) is rich in resources, but the United States (Fraxinus mandshurica var. Japonica), by its nature, the diameter of the duct in the hole of the wood is very large, and because the duct is formed with several layers, Therefore, if the ball is used repeatedly in the state of a log bat, there is a disadvantage that the tube portion is split or peeled.

Since the past, all kinds of objects that can improve the durability without losing the sense of use of wooden bats, and can protect resources are being tested. = As disclosed in Japanese Patent Application Laid-Open No. 50-1 33028, an adhesive is used to wind a peeling board of wood around the striking portion of a wooden bat heart; or Japanese Patent Application No. 53-59546 According to the publication, a laminated body formed by joining a wood layer and a carbon fiber reinforced plastic is formed.

552l50. 5. Description of the invention (2)-War angle, then the same angle as the conventional wood bat is cut to form a bat. Misunderstanding and 'Kokukai Sho 6 0- 1 8 7 7 7 5 patent publication, it is disclosed that ... the core of the central shaft of a wooden baseball bat for Xi is hollowed out, and a light alloy of various shapes is inserted Make bars to increase strength. [Problems to be Solved by the Invention] The spherical rib 2 is made of a composite material formed of conventional wood or other materials, and has a following problem. Core :: 墼 J: Use the adhesive to wind the wood peeling board around the wooden ball. It is used to improve the durability. In addition, the fixed weight is too heavy, and it is difficult to reduce the weight. The heterogeneity of the heartwood is severe, and it is easy to break the outer point. However, in the core bats that are not provided with a fixed-quality heartwood, they are made of wood and carbon fiber, and the laminated body made of wood and carbon fiber is formed into a bat-shaped laminated body, and then processed = laminated. Rectangular or slightly, the carbon fiber reinforced plastic is completely exposed to the final bat shape. When it is ground and trimmed, the carbon fiber is ground ^ Attached = bat "On the surface, the length of the wood layer in the research, the most of the bat varies. black. 86〇cm), so it must be as long as a bat (830 ~ Hours, because the number of layers of wood layers will save wood, or the problem of a large number of adhesives in the formation. '&Quot; Xi' Then the steps become many, and there is more need to 'hollow the center H of the wooden bat, and insert various

2〇75-4932-PF (N) .ptd Page 5 552150 V. Description of the invention (3) Of light bats made of light alloy rods to increase strength, the wood of the wood = and the conventional wooden bats are formed The same amount ..., the aforementioned degree, so 2: 2: the hole and the outer diameter of light alloy rods need to be very fine, so 'there is a problem that the procedure is very troublesome. Hey, ^ ^ Dagger To address other issues, point out, to provide a baseball ball • Worry ball " spoon: The amount of use, without losing the sense of use of wooden bats, and I can improve the durability. [Means for solving the problem] Building "Ιίΐ "! The purpose of the present invention, the scope of the patent application item 1 mm is composed of the hitting portion 2 and the holding portion 4 and the hitting portion Γ-shaped entire portion 3, of which, Made of wood = hitting portion outer casing 5, and formed of FRP, inside the hitting portion outer casing and the inner wall of the hitting portion outer casing are followed by a hitting core portion 6a, a tapered portion, a grip The FRP bat body formed by the holding part is joined and integrated. The mouth is according to the scope of the patent application No. 1 'The aforementioned hitting part shell system is the baseball or softball bat according to item 2 of the scope of patent application No. 1 of the present invention, wherein a plurality of wood pieces are opened and joined And formed. The baseball or softball bat according to any one of item 3 or 2 of the scope of the patent application of the present invention, the $ ... 'ball portion outer shell and the bat body are joined in the length direction by an elastomer结构 的 环 体 7。 The ring body 7. Item 4 of the scope of patent application of the present invention is the baseball or softball bat according to any one of item i or 2 of the scope of patent application, wherein the aforementioned stroke

552150

The ball part makes the outer part of the hitting part bigger than the straight part of you. &Quot; The hitting part is formed in advance than the finished bat. Guard, which is compressed by using a mold to obtain a compressed bat bat profit range item 5 ', a baseball or softball surface that corresponds to the range of the hitting portion of the frp bat body 6, or made of wood The cylindrical hitting part outer shell 5 includes the following steps: cutting wood to form the aforementioned cylindrical hitting part shell, and then hitting the ball next to the inner wall of the hitting outer case.

: Responsible body eg) 9 coating layer to form a FRP shaped stand P shaped body to take out the mandrel; insert the elastic body in the hollow of the FRp shaped body of the aforementioned taken out mandrel; in the cylindrical shape formed by the aforementioned wood Insert the part corresponding to the ball hitting core part of the FRp molded body inside the ball outer shell, and set it in the forming mold; and introduce the fluid into the elastic tube to expand the tube while using the foregoing The molding die heats the FRP molded body, and then forms the FRP molded body and the outer shell of the ball striking portion. [Embodiment of Invention]

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7. That is, 'the first figure is a schematic diagram of the bat of the embodiment; the second figure is a sectional explanatory view of the bat 1 shown in the first figure. The bat 1 of this embodiment includes a hitting portion 2, a tapered portion 3, and a gripping portion 4. The hitting portion 2 is made of Misaki (Fraxinus lanuginosa var. Serrata 'Fraxinus japonica, Fraxinus mandshur i ca var, japonica). ,

2075-4932-PF (N) .ptd Page 7 552150 V. Description of the invention (5)

(AmeriCana, Acer m_) wood waste r &, wood in the state of a wooden bat in a hanging state (... French-shaped outer casing 5; a cylindrical hit 6a, a tapered portion 3, and a grip The base body tank 5 made of a composite material formed by the hitting core of the holding part is made of wood, which is composed of the wood constituting the hitting part 2 described above, and is made of FRP constituting other parts. The structure of the bat is as follows: The wood is cut into a wide structure equivalent to the bat's body and its inside is a hollow cylindrical bat (Xi ^ shape, and the ball shell 艎 5 ... 部 5b The consistent dribble / = body 5, and the above-mentioned batting · 1 pair of ball center 6a, # 铨 丨, and the grip 4 are integrated into Fp by FRP material. The bat body 6 of the bat body 6 is a T bat body 6 'integrating the above-mentioned "two ΪΓ :: into the bat bb of the batting part outer casing 5 and then integrating them, and then joining them. The FRP bat body 6 is connected to the front. Specifically, ★ the bat has two layers of the above-mentioned bat, and can be a part of the hollow part of the outer shell 5 f = ΓΓ and hitting m μ ^ ^ ^ ^ Between the walls Da, for example, when a layer of viscoelastic body such as a heat-generating elastomer or synthetic rubber is provided, it can improve the rebound coefficient when hitting the ball, and it also has the advantage of easing the transmission of the vibration of the hand. When inserting the hitting core portion 6a into the hollow portion 5b of the hitting portion outer casing 5, and then joining the inner wall 5 of the hitting portion outer casing 5 "to the aforementioned hitting core portion 6a, the lengthwise joining of the bat The lower end surface 5c of the aforementioned hitting portion outer casing 5 and the upper end surface of the tapered portion of the aforementioned FRP bat body 6

552150

1 The hunter is made of elastic body, ^ ^ ^ ^ The outer shell 5 and the ball-shaped sisal- ^ 苒 %% body 7 enables the conical part of the bat body to smoothly join .

Ball # 2 > In the boundary between the hitting core 6a of the FRP bat body 6 and the aforementioned FRP ίΓΛ cone portion 6b, if there is a large step between the office β, it may be broken there, Therefore, when the FRp bat body 6 is formed, the phase + brings this. It is necessary to make the smooth vicinity i-two ^ near the boundary of the L and L boundary. When there is no ring body 7 described above, it is necessary to use a lathe Γ, Γ hitting the hollow portion of the outer shell 5 On the side of the tapered part, it is processed to form a corner. However, if the intermediate body P is made into a π-supplied shape when the annular body 7 is manufactured, production efficiency can be achieved without the chamfering operation. q The elastic body forming the aforementioned annular body 7 can be made of ABS plastic, nylon plastic urethane plastic, EVA plastic, polyethylene plastic, polypropylene plastic, poly plastic, etc., and is more flexible. Synthetic plastic material with good bonding properties of the bat body 6. Next, a method for manufacturing the composite material bat 1 according to the present invention will be described. (Shaping of the outer shell 5 of the hitting part) As shown in FIG. 3, a wood 8 having a rectangular shape of 100 mm and a length of about 36 mm is prepared. The wood 8 may be a single wood, or may be formed by a plurality of wood pieces being opened and joined. Then, the wood 8 is cut into a shape corresponding to the hitting portion 2 of the bat. Then, a hole having a diameter of 25 mm is processed in the center portion of the hitting portion 2 to form a hollow portion 5b.球 部 壳体 5。 The outer shell body 5. The hollow part 5 b is shown in a cylindrical shape penetrating to the front end surface 5 d of the hitting portion, and may be shown in a tubular shape not penetrating the front end surface of the hitting portion 5 d.

2075-4932-PF (N) .ptd Page 9 552150 V. Description of the invention (7) state. (Forming of the FRP bat body 6) First, as shown in Figs. 4 and 5, a mandrel 10a for the hitting core portion 6a, which is approximately equivalent to the hollow portion 5b of the hitting portion shell $ 5, is formed. The shape is approximately the same as the shape of the mandrel 3 of the cone 1 of the bat 1 and the mandrel of the holding part 4, respectively. A prepreg 9 is wound around a certain number 1, and then the mandrel is removed respectively, and The FRP formed body 60 connecting the two is shaped. In addition, the elastic tube 11 capable of being stretched and retracted is inserted in the FRP molded body 60 in advance. (Shaping of the bat) As shown in FIG. 5, the hitting core portion of the FRP molded body 60 is “inserted into the hollow portion 51 of the hitting portion outer case 5”. At this time, the hitting portion is previously An annular body 7 is arranged on the lower end surface 5c of the outer casing 5, and the aforementioned hitting core portion 6a first passes through the aforementioned annular body 7 and then is inserted into the hollow portion. Thereafter, the aforementioned hitting portion outer body 5 and the aforementioned As shown in FIG. 7, the annular body 7 and the FRP bat-shaped body 60 are arranged in a bat-forming mold 12. After being clamped by an upper mold (not shown), compressed air or the like is injected into the elasticity. In the pipe body 11, the elastic pipe body n is expanded, = the prepreg 9 of the aforementioned FRP formed body 60 is in a state of being closely adhered to the inner wall of the aforementioned sub-mold 12, and the hitting portion is heated by heating The outer casing 5 and the FRP molded body 60 are integrated to obtain a bat J. The annular body 7 has a lower end surface 5c and a tapered upper end surface 6c of the outer casing 5 made of wood, as shown in FIG. The connection in the form is smooth, but when such a component does not exist, it is best to make the wall thickness of the lower end of the striker 5 Close to the lower end and gradually thin into a cone ^ 2075-4932-PF (N) .ptd Page 10 552150 V. Description of the invention (Magic J-taper: The upper end 6c can be connected smoothly. And after forming: Ϊ ί The outer shell 5 of the ball and the FRP shaped body 60 described above-are not attached to the wood; = when grinding, the grinding powder of the chat part has the shape of the above-mentioned rude stopper, + 丄 杰, the shape The mold 12 is made of FRP-incorporating miso, and it is also connected to the wooden ball hitting outer shell 5. The ball of the hitting: the second hitting the outer shell 5 is formed in advance. The diameter of π ° is even larger. By the same method as above, it becomes possible to form the hitting portion 2 which is compressed. First, the outer diameter of the hitting portion 2 of the hitting portion 2 of the finished bat 1 is reduced to the outer portion of the ball portion 5. Above, after impregnating synthetic resin, the front hitting part: So Fang: J ::: 'Because the resin can be impregnated and compressed, it can form a more durable bat. [Effect of the invention], the former It is described that the bat body formed by the bat 12 of the present invention is formed by forming a bat body, and the bat portion formed by the above-mentioned bat cone is used to constitute the bat. 'The bat does not detract from the feel of the Kojima East club' and has excellent durability. In addition, it uses 2: less than the conventional wooden bat, because it hits the ball The center of the ball, so you can also use the stacking materials of wood chips, so the use of natural wood can be minimized to protect the environment. $, The ball rod system has a large degree of freedom in the use of materials ^ 'tf FRP ^ ^ ^ ^ ^ ^ ^ ^

2075-4932-PF (N) .ptd 552150 Brief Description of Drawings Figure 1 is a schematic diagram of the bat of the embodiment. Fig. 2 is a sectional explanatory view of the bat of the embodiment. Fig. 3 is a diagram illustrating a method of manufacturing the outer shell of the hitting portion of the bat of the embodiment. Fig. 4 is a drawing explaining a method for manufacturing the F RP molded body of the bat of the embodiment. Drawing. Figure illustration. 0 FIG. 5 illustrates a method of manufacturing the bat of the embodiment. FIG. 6 illustrates a cross-section of the joint portion of the bat of the embodiment. FIG. 7 illustrates a method of manufacturing the bat of the embodiment. 2 ~ hitting part; 3 ~ tapered part; 4 ~ holding part; 5 ~ hitting part outer body; 5a ~ inner wall; 5b ~ hollow part; 5c ~ lower end face; 5d ~ front end face of hitting part; 6 ~ FRP bat body; 6a ~ and ball center part; 6b ~ taper part; 6c ~ upper end face of tapered part; 7 ~ ring body;

2075-4932-PF (N) .ptd Page 12 552150 Schematic description of 8 ~ wood; 9 ~ pre-impregnated body; 10a ~ mandrel; 10b ~ mandrel; 60 ~ FRP shaped body; 11 ~ Elastic tube body; 1 2 ~ forming mold.

ΙΙΙ ·· ΙΙ 2075-4932-PF (N) .ptd Page 13

Claims (1)

552150 6. Scope of Patent Application 1. A baseball or stacking bat, broadcasted by the hitting portion (2) and the holding portion, and a tapered π connecting the hitting portion (2) and the holding portion (4) 3) The structure is characterized by: 4 (fiber = of "the hitting outer shell (5), and the inner part of the glass = part outer shell followed by the hitting core (60); The constructed glass fiber reinforced plastic bat body is joined together and the carcass 2 · = In the baseball ^ described in item j of the scope of the patent application, the shell system of the hitting part will be a plurality of wood pieces ^ / The bat is the joint of the baseball or man ball as described in 3 above, and S is set to 2: the length direction of the bat of the housing and the bat body 4 as described in & Straight 4 丨 > The ring body (7). Bat, where: Ξ: the baseball or worries described in item 1 or 2 of the finished product. The bat hits the ball. The shell is compressed in advance. The diameter of the hitting part 'is a fiber-reinforced plastic ball formed by compression molding with a mold; Qin Ben], the bat's manufacturing method *, is equivalent to glass made of wood 1) Upper surface of the ball portion of the range, wherein the packet loaded; ball portion of the housing body ⑴, cut to form the timber cylinder and corresponds to the strike "> Bu salt thereof; hitting the inner wall of the core portion of the next phase 2075-4932-PFl (N) .ptc Page 14 552150 Case No. 911125fi4 VI. Patent application scope (6a), the mandrel (10a, the holding part U) of the tapered part (6b), the pre-impregnated body ( prepreg) (9) to form a glass fiber reinforced glass fiber reinforced suspicion "?,"? skin-covered shoulder glass fiber reinforced plastic molded body (60), take the mandrel from the glass fiber reinforced plastic molded body described in f; Take out the hollow part of the glass fiber reinforced body of the mandrel and insert it into the elastic tube body (11); insert the part equivalent to the glass fiber reinforced plastic molded body inside the outer hub of the cylindrical hitting part formed of the aforementioned wood, and then Set it in the forming mold (12); the table f fluid leads to the aforementioned elastic tube body, the tube body-while expanding, envy :: Ϊ molding for heating the glass fiber reinforced plastic molded body, W Then make the aforementioned glass fiber reinforced plastic molded body and the outer shell of the hitting part a dagger. Limb * 2075-4932-PFl (N) .ptc Page 15