JP2593163B2 - Goalkeeper stick - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stick for a goalkeeper used for sports such as ice hockey, and more particularly to a stick for a goalkeeper whose hitting surface is reinforced with a fiber-reinforced thin plate.

2. Description of the Related Art There is a goalkeeper stick used in ice hockey as this kind of conventional one. The ice hockey game is an intense sport in which a disc-shaped puck is blown off with a strong force and a puck with a high speed is hit back. Therefore, the goalkeeper stick used in the game is very easily damaged. By the way, if you look at the amount of stick consumption in Japan, the average for college students during a season is 30
There are about 100-150 books and players belonging to companies.

For this reason, sticks that were made of wood have also been improved, and those made of wood reinforced with fiber reinforced plastic (FRP), aluminum alloys, and glass fiber composites have appeared. However, in any case, a strong one is too heavy and is difficult to use for ordinary people, and a light one lacks durability at present.

In particular, in the case of a metal material such as an aluminum alloy, there is also a problem that elasticity is small and plastic deformation occurs, and a cloth (fabric) such as glass or carbon is formed on both sides of a wooden core material by epoxy which is a thermosetting resin. A glass fiber reinforced plastic (GFRP) plate or a carbon fiber reinforced plastic (CFRP) plate impregnated with a resin such as polyester or polyester is often used. One such device is disclosed in U.S. Pat. No. 4,537,398.

Wood core material with elasticity, the grain is oriented in the length direction of the blade, the fiber reinforced plastic plate as a reinforcing material that covers it is a cross-shaped fiber in which fibers are woven vertically and horizontally and cross each other, epoxy And so on.

Such a fiber reinforced plastic plate has the effect of reinforcing both directions simultaneously because the fibers cross each other vertically and horizontally, but the fiber tension is insufficient because the fibers in both directions overlap and intersect and undulate. doing. Therefore, there were drawbacks that the tensile strength and elastic force were low in both directions, the strength was low, the repulsion was low, and the response to hit the shot pack and the speed of the pack were slow. In addition, since the vertical and horizontal fibers overlap and cross each other, the fibers have a thickness, so that the amount of resin impregnated increases accordingly. In this respect, the elastic modulus also decreases, the weight increases, and the operability decreases. There are drawbacks. In addition, there is also a problem that the stress is concentrated on a portion where the fibers intersect, so that the fiber is easily broken.

To solve this problem, there is a technique disclosed in Japanese Patent Publication No. 61-59149, which is assigned to the present applicant. According to this technique, fibers are aligned and extended in parallel along the shape of a stick on the side of the striking surface extending from the striking portion to the handle to reinforce.

Problems to be Solved by the Invention However, in such a conventional stick, since the fiber direction is formed along one direction, the strength against bending or folding in one direction is high, but on the other hand, Crack strength in different directions could hardly be expected.

Means for Solving the Problems The present invention has been made in view of such conventional problems, and comprises a shaft and a blade, and the shaft-side hitting ball portion in which the blade extends along the longitudinal direction of the shaft. A toe-side striking portion extending horizontally from the lower end of the shaft-side striking portion, and a reinforcing material bonded to the front and back surfaces of the wooden core of the blade. A reinforcing material provided on at least one of the front and back surfaces of the core material is formed of a fiber reinforced thin plate in which fibers are aligned in one direction, and a length of at least approximately half of the toe side hitting ball portion from the tip of the toe side hitting portion. A fiber direction of the fiber-reinforced thin plate and a grain of the core in a region at least approximately half the length of the shaft-side hitting portion from the lower end of the shaft-side hitting portion. It is characterized by a stick for the keeper.

According to this means, the reinforcing material provided on at least one surface of the wooden core of the blade is made of a fiber-reinforced thin plate in which fibers are aligned in one direction, so that a conventional cross-shaped cloth is used. Unlike the ones that are thin and do not cause an increase in weight due to a large amount of resin and can apply a predetermined tension to the fiber, the strength of the blade can be improved, and the pack speed can be increased by increasing the repulsive force. Can be made faster. Moreover, in the region approximately half the length from the tip of the second blade and approximately half the length from the lower end of the first blade, the grain direction of the core material and the fiber direction of the fiber-reinforced thin plate intersect. While taking advantage of the wooden core material with considerable strength and elasticity, it also compensates for the drawbacks of the fiber reinforced thin plate as a aligning plate by crossing, and maximizes the advantages of the fiber reinforced thin plate and the core plate Can be demonstrated to the maximum extent.

Examples Hereinafter, the present invention will be described based on each example. First
FIG. 2 and FIG. 2 are views showing a first embodiment of the present invention.

First, the configuration will be described. The goalkeeper stick 1 of this embodiment is used for a game such as ice hockey, and is composed of a shaft 2 and a blade 3.

The blade 3 includes a shaft-side hitting portion 4 extending in the direction of the shaft 2, and a toe-side hitting portion 5 extending horizontally from a lower end 4 a of the shaft-side hitting portion 4. The reinforcing member 7 is adhered to the second member.

The core material 6 has a grain formed along the width direction of the toe-side hitting portion 5 in a region A approximately half the length from the tip 5a of the toe-side hitting portion 5, and a toe-side hitting ball in the other half region. It is formed along the longitudinal direction of the portion 5. Also, in a region B having a length approximately half upward from the lower end 4a of the shaft-side hitting portion 4 (the connection portion between the two hitting portions 4 and 5), a grain is formed along the width direction of the shaft-side hitting portion 4. , At other portions along the direction of the shaft 2. A wooden board is fitted into the core 6 so that the grain is in such a direction.

On the other hand, as the pair of reinforcing members 7, fiber-reinforced thin plates 8, 9 in which fibers are aligned in one direction are used. This fiber reinforced sheet
As the materials 8 and 9, those obtained by impregnating and hardening a long fiber such as glass or carbon with a thermosetting resin such as epoxy under tension are used. The magnitude of this tension varies depending on the type of fiber and the diameter of the roving. For example, when long fiber glass roving (Tex; 2400 kg / km) is used, about 0.1 to 1.5 kg of tension is applied to each roving. It is desirable.

Then, the fiber reinforced thin plate 8 is stuck to the shaft side hitting portion 4 and the fiber reinforced thin plate 9 is stuck to the toe side hitting portion 5.
In No. 9, the direction of the fiber is formed along the longitudinal direction of each of the hit ball portions 4 and 5.

In a state where such fiber reinforced thin plates 8 and 9 are stuck to the core material 6, a region A approximately half from the tip 5 a of the toe side hitting portion 5 and a region B approximately half from the lower end 4 a of the shaft side hitting portion 4.
In, the grain of the core material 6 and the fiber directions of the fiber reinforced thin plates 8 and 9 intersect.

In the goalkeeper stick 1 having such a configuration, the fiber-reinforced thin plates 8 and 9 as the reinforcing members 7 are provided with tension, and unlike the conventional cross shape, the fibers do not intersect. In addition, the resin amount is relatively much smaller than that of the cloth-like FRP, so that the weight can be reduced, and the strength and elasticity are remarkably higher than those of the cloth-like FRP.

Also, a region B approximately half from the lower end 4a of the shaft-side hitting portion 4 receiving a particularly strong impact and the tip 5a of the toe-side hitting portion 5
Since the fiber direction of the fiber reinforced thin plates 8 and 9 and the direction of the grain intersect in a region A which is approximately half from the above, the weak points of the fiber reinforced thin plates 8 and 9 as the aligning plates can be compensated for and the strength can be increased. Can be secured. Therefore, the tip 5a of the toe-side hitting portion 5
Since it is not necessary to secure the strength by making the side thicker, it is also favorable in terms of weight reduction.

Further, in the area A which is half of the tip 5a of the toe-side hitting portion 5, the grain of the core 6 is formed along the width direction (vertical direction), so that even if the ice surface is hit, Compared to those formed along, it is strong against impact and hard to break.

Therefore, by doing so, the advantages of the reinforcing material 7 and the advantages of the core material 6 can be utilized to the fullest, and are light and strong,
Moreover, it is possible to provide a goalkeeper stick having a high elastic modulus and extremely high performance.

FIG. 3 is a view showing a second embodiment of the present invention.

The core member 6 of the shaft-side hitting portion 4 of this embodiment has a lower end portion.
In the region B slightly longer than half from 4a, the grain is formed along the width direction (substantially horizontal direction), and the other portions are formed along the shaft 2 direction. The core 6 of the toe-side hitting portion 5 has the entire grain formed along the longitudinal direction.

On the other hand, the reinforcing member 7 is formed such that the fiber direction of the fiber reinforced thin plate 8 attached to the shaft side hitting portion 4 is formed along the shaft 2 direction, and the fiber direction of the fiber reinforced thin plate 9 attached to the toe side hitting portion 5 is It is formed along the width direction (vertical direction in the figure).

By doing so, the lower end portion of the shaft-side hit ball portion 4
4A, the fiber direction of the fiber reinforced thin plate 8 and the grain direction of the core 6 intersect in the region B which is half or more. In the toe hitting portion 5, the fiber direction of the fiber reinforced thin plate 9 and the core 6 Crosses the grain direction.

As described above, in the toe side hit ball portion 5, the strength can be further improved by intersecting the fiber direction and the grain direction in the whole.

FIGS. 4 and 5 show a third embodiment of the present invention.

As shown in FIG. 5, the reinforcing member 7 of this embodiment is configured by laminating a plurality of fiber-reinforced thin plates 10, 11, 12, and 13. That is, what is attached to the shaft-side hitting portion 4 of the reinforcing member 7 includes a fiber-reinforced thin plate 10 whose fiber direction is along the longitudinal direction and a fiber-reinforced thin plate 11 whose fiber direction is inclined with respect to the longitudinal direction. It is laminated. Further, as to be attached to the toe side hitting portion 5, a fiber reinforced thin plate 12 whose fiber direction is along the longitudinal direction and a fiber reinforced thin plate 13 whose fiber direction is along the width direction are laminated. Then, four fiber-reinforced thin plates 10 to 13 are laminated to form a reinforcing member 7 as shown in FIG.

On the other hand, in the core material 6, as shown in FIG. 4, the grain is formed along the width direction in the half area B from the lower end 4a on the shaft side hitting part 4 side, and the grain is formed in the other half area. It is formed along the shaft 2 direction. Further, in the toe-side hitting ball portion 5, it is formed obliquely with respect to the longitudinal direction in a region A approximately half from the tip 5a, and formed in the longitudinal direction in the other half region.

When the core member 6 and the reinforcing member 7 having such a configuration are adhered to each other, in a region A approximately half from the tip 5a of the toe-side hitting portion 5 and a region B approximately half from the lower end portion 4a of the shaft-side hitting portion 4, The fiber direction of at least one of the two fiber-reinforced thin plates 10 to 13 and the grain direction of the core material 6 intersect each other.

Since the fiber directions intersect with each other in this manner, the strength is further improved as compared with the above embodiment.

FIG. 6 shows a fourth embodiment of the present invention.

In this embodiment, the reinforcing member 7 is the same as that of the third embodiment shown in FIG. 5, while the core material 6 is different from that of the third embodiment. The core material 6 is formed such that the entire grain of the shaft-side hitting portion 4 is formed along the shaft 2 direction, and the grain of the toe-side hitting portion 5 is formed along the width direction in an area A having a half length from the tip 5a. On the other hand, other portions are formed along the longitudinal direction.

When the reinforcing material 7 is adhered to such a core material 6, the fiber direction of the fiber-reinforced thin plate 12 and the grain direction of the core material 6 intersect in a half area A from the tip 5 a of the toe hitting part 5, The fiber direction of the reinforced thin plate 13 and the grain direction of the core 6 are parallel to each other, and in other portions, the fiber direction of the fiber reinforced thin plate 13 and the grain direction of the core 6 intersect, and the fiber reinforced thin plate 12 The fiber direction and the grain direction of the core 6 are parallel. On the other hand, in the shaft side hitting portion 4, the fiber reinforced thin plate 11 intersects the fiber direction with the grain direction of the core material 6, and the fiber reinforced thin plate 11
The fiber direction of 10 and the grain direction of the core material 6 are parallel.

As shown in FIG. 7, each core member 6 of each of the above-described embodiments is formed such that the shaft-side hit ball portion 4 is extended from the shaft 2, and the lower end portion 4a of the shaft-side hit ball portion 4 has both hit balls. The heel portion X may be extended so as to constitute the entire heel portion X which is a connection portion between the portions 4 and 5, and as shown in FIG.
Can be extended to form part of

Further, the fiber reinforced thin plate 8 provided on the shaft side hitting portion 4 may be extended so that the lower end portion covers the entire heel portion X as shown in FIG. 9, or as shown in FIG. like,
It can be extended so as to cover a part of the heel portion X.
Of course, the fiber reinforced thin plate 9 is stuck to other parts.

Further, as shown in FIG. 11 or 12, fiber-reinforced thin plates 14, 15 are provided at arbitrary positions on the blade 3 of the goalkeeper stick 1 of each of the above-mentioned embodiments to reinforce.

Furthermore, as shown in FIG. 13, the fiber reinforced thin plate 16 may be provided in the peripheral portion 3a of the blade 3 and in a region from the peripheral portion 3a to an arbitrary portion of the shaft 2.
In this case, the strength can be further improved. As shown in FIG. 14, a fiber reinforced thin plate 16 is provided on the bottom surface 3b of the blade 3. In addition, this fiber reinforced thin plate
Instead of 16, a protective material of a plastic plate can be provided. By arranging it on the bottom surface 3a in this way, even if the core material 6 is hit against the ice surface, damage to the core 6 can be prevented.

As shown in FIGS. 15 and 16, a fiber reinforced thin plate 16 and a protective material 17 as a plastic plate may be provided on the bottom surface 3b of the blade 3. Such protective materials 17 include fiber-reinforced plastics, plastics, metals,
Use a thin plate such as wood.

As shown in FIGS. 17 and 18, the protective member 17 disposed on the bottom surface 3b of the blade 3 is set so as not to be covered by the reinforcing member 7 and to be exposed. By exposing in this manner, even if the protective member 17 is deformed by an impact, the reinforcing member 7 is not affected.

As shown in FIG. 19 or FIG. 20, substantially the entire blade 3 is covered and reinforced by a reinforcing member 7 and then covered by a protective member 17 such as a resin. By covering the entire surface of the blade 3 with the protective material 17 as described above, it is possible to prevent moisture from entering the wooden core material 6 and to improve durability. In addition, since the reinforcing material 7 has a unidirectional fiber, the impact of a pack or the like causes
There is a possibility of cracking, but this is prevented by providing the protective material 17 on the front surface side.

Furthermore, a protective material covering substantially the entire blade 3
A plurality of projections 18 as shown in FIG. 21 and streaky projections 19 as shown in FIG.

In this way, when the puck is hit, the projection
It is possible to prevent slippage at 17 and streaks 19.

In each of the above embodiments, the fiber reinforced thin plates 8 are provided on both surfaces of the core material 6. However, the present invention is not limited to this, and it is needless to say that one surface may be used.

Here, advantages of the present invention will be described below based on experimental data.

First, experimental results are as shown in the following table.

The contents of the experiment will be described as follows: (1) As for the test piece, as shown in FIG. 23, four cloth-like carbon woven fabrics are respectively formed on both sides (one side is omitted in the figure) of a core material E made of ABS resin. (A test piece I).

Vertical and horizontal fiber ratio (1: 1) As shown in FIG. 24, four carbon fiber aligned fiber reinforced thin plates A are alternately arranged vertically and horizontally on both sides (one side is omitted in the figure) of ABS resin core material E. Attach (specimen II).

Here, in each of the test pieces I and II, the fiber amount of each of the fiber reinforced thin plates F and A is the same.

As shown in FIG. 25, a fiber made of four cloth-like carbon woven fabrics on both sides (one side is omitted in the figure) of a wooden core C made of Itaya maple and a grain oriented in the longitudinal direction of the blade. A reinforced thin plate F is applied (test piece III).

As shown in FIG. 26, the wooden core C was made of itaya maple and the grain was oriented in the width direction of the blade, but four fiber-aligned fiber-reinforced thin plates A were provided on both sides (one side is omitted in the figure). Affix so that the number of fibers in the horizontal and vertical directions and the horizontal direction perpendicular to the grain is increased (test piece IV). When the core material has directionality like a tree, it is reinforced in consideration of the directionality of the fiber reinforced thin plate A.

Here, in the test pieces III and IV, the fiber reinforced thin plates F and A
Are the same.

(2) The test conditions were as shown in FIG.

1. Shape of test specimen (I, II, III, IV) 2. Load condition Testing machine: Autograph (Shimadzu Corporation) Bending string: 3-point bending Span l: 80 mm Radius R ₁ of indenter (a): 5 mm Radius R ₂ of supporting jig (B): 2 mm Test speed: 5 mm / min Here, the thickness of the test pieces I to IV is 3.0 mm for the core materials E and C, 0.23 mm × 8 for the fiber reinforced thin plates A and F, and a total of 3.0 + 0.23 × 8 =
It is 4.84 mm, but actually the thickness of the adhesive is added, so 5.
9mm.

When the test pieces III and IV are compared, the fiber usage of the fiber reinforced thin plates F and A is the same.
Then, by intersecting the fiber direction of the fiber-reinforced thin plate A aligned in one direction with the width, width, length, and width in consideration of the grain direction of the core material, it can be seen that the test piece IV has higher elasticity and strength. .

Conversely, if the strengths of the test pieces III and IV are the same, the weight of the test piece IV can be reduced.

In the above table, the specific strength and the specific elasticity are values obtained by dividing each numerical value by the weight of each of the test pieces I to IV, and indicate the strength per weight. The larger the value, the lighter and stronger it is.

Such a comparison is the same for the comparison between the test piece I and the test piece II.

Effect of the Invention As described above, according to the present invention, the reinforcing material provided on at least one of the front and back surfaces of the core material is constituted by a fiber-reinforced thin plate in which fibers are aligned in one direction, and the toe side A region that is at least approximately half the length of the toe-side hitting portion from the tip of the hitting portion and a region that is at least approximately half the length of the shaft-side hitting portion from the lower end of the shaft-side hitting portion (the connection portion with the toe-side hitting portion). By intersecting the fiber direction of the fiber-reinforced thin plate and the grain of the core material with each other,
A stick with a light tip that is easy to use and yet durable. It is possible to provide a stick for a goalkeeper that has a high repulsion force even at the tip side of the toe-side hitting part, improves hitting responsiveness and responsiveness, and improves pack speed. it can.

[Brief description of the drawings]

1 and 2 are views showing a first embodiment of a goalkeeper stick according to the present invention. FIG. 1 is an exploded perspective view of the stick, and FIG. 2 shows a state in which a reinforcing material is adhered to a core material. FIG. 3 is an explanatory view corresponding to FIG. 2 showing a second embodiment of the present invention, FIGS. 4 and 5 are views showing a third embodiment of the present invention, and FIG. FIG. 5 is an explanatory view showing a state in which the reinforcing material is attached to a core material, FIG. 5 is an explanatory view showing a state in which a plurality of fiber reinforced thin plates are attached to form a reinforcing plate, and FIG. Explanatory diagram corresponding to FIG. 4 showing an embodiment,
FIGS. 7 and 8 are front views showing the configuration of the core material of the blade, respectively. FIGS. 9 and 10 are front views showing the arrangement of the reinforcing material, respectively, and FIGS. A front view showing a state in which a fiber-reinforced thin plate is stuck to an arbitrary portion of the goalkeeper stick of each of the above embodiments, FIGS. 13 and 14 are front views each showing a structure in which the periphery of the blade is reinforced, and FIG. FIGS. 16 and 17 show a structure in which a reinforcing material and a protective material are provided on the bottom of the blade, FIG. 15 is a front view thereof, FIG. 16 is a cross-sectional view taken along line XVI-XVI of FIG.
17 to 20 are cross-sectional views showing the arrangement of the reinforcing material and the protective material, respectively, FIG. 21 and FIG. 22 are perspective views each showing the state of the surface of the protective material, and FIG. 23 is an ABS resin FIG. 24 is an explanatory view showing a state in which a fiber-reinforced thin sheet of a cloth-like carbon woven cloth is attached to a core material of FIG. 24; FIG. 25 is an explanatory view showing a state where a fiber reinforced thin sheet of a cloth-like carbon woven cloth is attached to a wooden core, and FIG. 26 is a state where a fiber reinforced thin sheet aligned in one direction is attached to a wooden core. FIG. 27 is an explanatory diagram showing test conditions. 1 ... Goalkeeper stick 2 ... Shaft 3 ... Blade 4 ... Shaft side hitting portion, 4a ... Lower end portion 5 ... Toe side hitting portion, 5a ... Tip 6 ... Core material, 7 ... Reinforcement Material 8-13: Fiber reinforced thin plate

Claims (3)

(57) [Claims] 1. A shaft-side hitting portion comprising a shaft and a blade, the blade extending along the longitudinal direction of the shaft, and a toe extending horizontally from a lower end portion of the shaft-side hitting portion. A side hitting portion, and a stick for a goalkeeper in which a reinforcing material is bonded to the front and back surfaces of the wooden core material of the blade, wherein the reinforcing material provided on at least one surface of the front and back surfaces of the core material is a fiber. Constructed from fiber reinforced thin plates aligned in one direction,
Fiber direction of the fiber-reinforced thin plate in a region at least approximately half the length from the tip of the toe-side hitting portion and at least approximately half the shaft-side hitting portion from the lower end of the shaft-side hitting portion And a grain of the core material intersecting each other. 2. The goalkeeper stick according to claim 1, wherein a plurality of said fiber-reinforced thin plates are laminated to form a reinforcing material. 3. The plurality of fiber reinforced thin plates are laminated with at least one pair of fiber directions crossing each other, and a region of at least approximately half the length of the toe side hitting portion from the tip of the toe side hitting portion and the shaft side hitting ball The direction of at least one fiber of the plurality of fiber-reinforced thin plates in a region at least approximately half the length of the shaft-side hitting portion from the lower end of the portion is such that the grain of the core material intersects with the grain of the core material. The stick for a goal keeper according to claim 2, characterized in that the stick is used.