JP2015008891A - Baseball helmet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a baseball helmet having excellent durability.SOLUTION: A baseball helmet comprises an outer shell member, an inner layer member and a reinforcing sheet member 13. The outer shell member includes: a body part 2 formed into a hemispherical shell shape; a visor part connected to the body part 2; and an ear protection part 4 connected to the body part 2 at a position adjacent to the visor. The inner layer member is layered on an inner circumferential side of the outer shell member and is made of a foamed resin at least extending from the body part 2 to the ear protection part 4. The reinforcing sheet member 13 on an inner circumferential surface of the inner layer member extends from a region located on an inner circumferential side of the ear protection part 4 to a region located on an inner circumferential side of the body part 2, and is harder than the inner layer member. In a region located on an inner circumferential side of a boundary between the ear protection part 4 and the body part 2, a concave-convex part (a reinforcing rib part 21) is formed in a manner extending from a side of the body part 2 to a side of the ear protection part 4 on the reinforcing sheet member 13.

Description

  The present invention relates to a baseball helmet, and more particularly to a baseball helmet having an ear protection part.

  Conventionally, a baseball helmet worn by a batter in baseball is known (for example, see JP 2013-34747 A). In JP 2013-34747 A, an outer shell including a main body portion, an ear protection portion, and a heel portion, a foam resin disposed on the inner peripheral side of the outer shell, and a foam disposed in the ear protection portion. A baseball helmet including a resin inner shell arranged on the inner peripheral side of the body resin is disclosed.

JP 2013-34747 A

  In the above-described conventional baseball helmet, the inner shell is arranged to increase the durability against the operation of expanding the ear protection part when the user wears the baseball helmet. However, according to the inventor's study, there are cases where the durability of the baseball helmet is insufficient only by arranging such an inner shell.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a baseball helmet with excellent durability.

  A baseball helmet according to the present invention includes an outer shell member, an inner layer member, and a reinforcing sheet member. The outer shell member includes a hemispherical shell-shaped main body, a collar connected to the main body, and an ear protection unit connected to the main body at a position adjacent to the collar. The inner layer member is made of a foam resin that is laminated on the inner peripheral side of the outer shell member and extends at least from the main body portion to the ear protection portion. The reinforcing sheet member extends on the inner circumferential surface of the inner layer member from a region located on the inner circumferential side of the ear protection portion to a region located on the inner circumferential side of the main body portion, and has a higher hardness than the inner layer member. In the region located on the inner peripheral side of the boundary portion between the ear protection portion and the main body portion, an uneven portion extending from the main body portion side toward the ear protection portion side is formed in the reinforcing sheet member.

  ADVANTAGE OF THE INVENTION According to this invention, the helmet for baseball excellent in durability can be provided.

It is a perspective schematic diagram showing an embodiment of a baseball helmet according to the present invention. It is a front schematic diagram of the baseball helmet shown in FIG. It is a cross-sectional schematic diagram in line segment III-III shown in FIG. It is a cross-sectional schematic diagram in line segment IV-IV shown in FIG. It is a schematic diagram for demonstrating the structure of the ear protection part of the baseball helmet shown in FIG. It is an expansion schematic diagram for demonstrating the structure of the ear | edge protection part of the baseball helmet shown in FIG. It is a schematic diagram for demonstrating the structure of the connection part of an ear | edge protection part and a main-body part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

With reference to FIGS. 1-7, embodiment of the helmet for baseball by this invention is described.
1 to 7, a baseball helmet 1 according to the present invention includes a hemispherical shell main body 2, and a heel part 3 projecting in one direction (forward direction) from the opening side of the main body 2. An outer shell member 11 (see FIG. 3) including an ear protection portion 4 connected to the main body 2 at a position adjacent to the collar 3 (lateral direction of the main body 2), and an inner periphery of the outer shell 11 An inner layer member 12 made of foam resin disposed on the side, and a reinforcing sheet member 13 that partially covers the inner layer member 12 on the inner peripheral side of the ear protection portion 4 are provided.

  As shown in FIGS. 5 to 7, the reinforcing sheet member 13 covers the outer periphery 14 of the inner layer member 12 located in the ear protection portion 4 and extends to the inner periphery 15 of the inner layer member 12 located in the main body portion 2. Yes. The reinforcing sheet member 13 covers the end face 16 of the outer periphery 14 of the inner layer member 12 at the ear protection part 4 and the outer periphery of the ear protection part 4 on the heel part 3 side (the outer periphery 14 of the inner layer member 12 positioned at the ear protection part 4). , And extends to the inner periphery 15 of the inner layer member located in the main body part 2 through the inside of the boundary between the ear protection part 4 and the collar part 3. Further, from a different point of view, the reinforcing sheet member 13 extends along the outer periphery 14 of the ear protection part 4 and further does not cover the boundary end surface 17 between the ear protection part 4 and the heel part 3, and the inner periphery of the main body part 2. It is a strip extending to 15.

  Since the reinforcing sheet member 13 which is such a belt-like body is arranged along the outer periphery of the ear protection part 4, the ear protection part 4 is held by the ear protection part 4 when the user wears the baseball helmet 1. When trying to spread the portion 4, the user does not directly press the inner layer member 12 made of the foam resin at the outer peripheral portion of the ear protection portion 4 (the user's finger is positioned on the reinforcing sheet member 13). Will do). For this reason, possibility that the inner layer member 12 in the ear protection part 4 of the helmet 1 for baseballs will be damaged by a user's hand can be reduced.

  As shown in FIGS. 6 and 7, an uneven portion (reinforcing rib portion 21) is formed at the boundary portion between the ear protection portion 4 and the main body portion 2 so as to be adjacent along the boundary portion. . From a different point of view, the reinforcing sheet member 13 has a plurality of (three in FIG. 6) reinforcing rib portions 21 formed from the main body portion 2 toward the ear protection portion 4. The reinforcing rib portion 21 is formed by plastic deformation of a part of the reinforcing sheet member 13. In the reinforcing rib portion 21, the shape of the reinforcing sheet member 13 is uneven as shown in FIG. 6 and the like, and the surface shape of the inner layer member 12 positioned below the reinforcing sheet member 13 is also the shape of the reinforcing rib portion 21. It has an uneven shape along. As shown in FIGS. 6 and 7, at the boundary between the main body portion 2 and the ear protection portion 4, the surface of the inner layer member 12 has a concavo-convex shape (reinforcing rib portion 21 and (Similar shape) is formed. With such a configuration, the strength of the boundary between the main body 2 and the ear protection unit 4 can be increased.

  Further, the reinforcing sheet member 13 extends to the inner peripheral side of the ear protection part 4 at the boundary part between the ear protection part 4 and the heel part 3. Further, a reinforcing sheet member 13 is formed so as to extend from a part on the inner peripheral side of the ear protection part 4 to the main body part 2 side through the reinforcing rib part 21. If it does in this way, since the intensity | strength in the boundary part of the ear protection part 4 and the heel part 3 will be heightened by the uneven | corrugated | grooved part (reinforcement rib part 21) formed in the reinforcement sheet | seat member 13, durability of the baseball helmet 1 The sex can be increased.

  Next, a method for manufacturing the baseball helmet 1 shown in FIGS. 1 to 5 will be briefly described. In the method for manufacturing the baseball helmet 1, first, the outer shell member 11 is prepared. As a manufacturing method of the outer shell member 11, any method can be used. For example, a vacuum forming method, a pressure forming method, an injection forming method, or the like can be used. Next, a step of arranging the inner layer member 12 on the inner peripheral side of the outer shell member 11 is performed. Although any method can be used in this step, for example, the outer shell member 11 is arranged inside a mold corresponding to the shape of the inner layer member 12, and the raw material (foamable resin or the like) of the inner layer member 12 is used as the mold. The inner layer member 12 can be fixed to the inner peripheral side of the outer shell member 11 by injecting and foaming the inside of the inner shell member 11, or the inner layer member 12 and the outer shell member 11 are separately prepared, such as an adhesive or a double-sided tape. You may fix with a fixing member. Thereafter, the reinforcing sheet member 13 is fixed at a predetermined position on the inner peripheral surface of the inner layer member 12. Here, as a method of fixing the reinforcing sheet member 13 to the inner layer member 12, any method can be used. For example, even if the reinforcing sheet member 13 is fixed to the inner layer member 12 using an adhesive or a double-sided tape. Good.

  In the step of disposing the inner layer member 12 on the inner peripheral side of the outer shell member 11, the reinforcing sheet member 13 formed in advance at a predetermined position inside the mold is disposed, whereby the reinforcing sheet member 13 is moved to the inner layer member. The step of fixing to 12 may be performed simultaneously. In this way, the baseball helmet 1 shown in FIGS. 1 to 5 can be obtained.

  Here, although there is a part which overlaps with embodiment mentioned above, the characteristic structure of this invention is enumerated.

  A baseball helmet 1 according to the present invention includes an outer shell member 11, an inner layer member 12, and a reinforcing sheet member 13. The outer shell member 11 includes a hemispherical shell-shaped main body 2, a collar 3 connected to the main body 2, and an ear protection unit 4 connected to the main body 2 at a position adjacent to the collar 3. The inner layer member 12 is laminated on the inner peripheral side of the outer shell member 11 and is made of a foam resin extending at least from the main body portion 2 to the ear protection portion 4. On the inner peripheral surface of the inner layer member 12, the reinforcing sheet member 13 extends from a region located on the inner peripheral side of the ear protection portion 4 to a region located on the inner peripheral side of the main body portion 2, and from the inner layer member 12. High hardness. In the region located on the inner peripheral side of the boundary part between the ear protection part 4 and the main body part 2, an uneven part (reinforcing rib part 21) extending from the main body part 2 side toward the ear protection part 4 side in the reinforcing sheet member 13. Is formed.

  In this way, the boundary between the main body portion 2 and the ear protection portion 4 is reinforced by the reinforcing sheet member 13 and the uneven portion (reinforcing rib portion 21) formed in the reinforcing sheet member 13, so that the baseball When the user wears the helmet 1 and performs the operation of expanding the ear protection unit 4, the possibility that the boundary between the main body 2 and the ear protection unit 4 is damaged can be reduced.

  In the baseball helmet 1, the outer shell member may have a thickness of 0.2 mm to 1.5 mm, and the outer shell member 11 and the inner layer member 12 may be integrally formed. In this case, it is possible to reduce the weight of the baseball helmet 1 by making the thickness of the outer shell member 11 thinner than before, and to maintain the strength of the baseball helmet 1 by both the outer shell member 11 and the inner layer member 12. it can.

  In the baseball helmet 1, the reinforcing sheet member 13 is a heel portion on the outer peripheral portion of the inner layer member 12 from the portion (lower end) farthest from the main body portion 2 in the inner layer member 12 located on the inner peripheral side of the ear protection portion 4. It may be a belt-like body extending to the top of the inner layer member 12 located on the inner peripheral side of the main body portion 2 via the portion on the 3 side. In this case, since the lower end and the outer peripheral portion of the ear protection portion 4 can be protected by the reinforcing sheet member 13, when the user holds the lower end and performs an operation of spreading the ear protection portion 4, the inner layer member 12. It is possible to reduce the possibility that the lower end of the arm will be damaged. In addition, the reinforcing sheet member 13 that suppresses damage to the inner layer member 12 as described above is located at the boundary between the ear protection unit 4 and the main body 2 via the outer periphery of the ear protection unit 4. Since it is integrated with the portion 13 (a single band-like body), the manufacturing process is simplified when the base sheet helmet 1 is manufactured, in which the reinforcing sheet member 13 is divided into a plurality of parts. it can.

  In the baseball helmet 1, the reinforcing sheet member 13 may extend to the end surface 16 of the inner layer member 12 located on the inner peripheral side of the ear protection unit 4. In this case, in addition to the inner peripheral surface of the inner layer member 12 in the ear protection part 4, the end surface can also be protected by the reinforcing sheet member 13. Therefore, when the baseball helmet 1 is placed on the ground or a bench, it is possible to prevent the end surface of the inner layer member 12 in the ear protection unit 4 from being damaged by coming into contact with the ground or the like.

  As the material of the outer shell member 11, for example, polycarbonate, polyolefin, acrylonitrile / butadiene / styrene copolymer, or the like can be used. The thickness of the outer shell member 11 is preferably 0.2 mm or more and 1.5 mm or less, more preferably 0.4 mm or more and 1.2 mm or less. In addition, when the thickness of the outer shell member 11 is less than 0.2 mm, the strength against abrasion and impact when the outer shell member 11 is in contact with earth and sand is not sufficient. In addition, when the thickness of the outer shell member 11 exceeds 1.5 mm, processing such as cutting for the air holes provided in the outer shell member 11 becomes difficult.

  As the material of the inner layer member 12, for example, a foamed body such as polyurethane, polystyrene, or polyolefin can be used. The thickness of the inner layer member 12 is, for example, 4 mm or more and 25 mm or less, more preferably 8 mm or more and 20 mm or less. In addition, when the thickness of the inner layer member 12 is less than 4 mm, a molding defect may be considered and the strength is not sufficient. On the other hand, if the thickness of the inner layer member 12 exceeds 25 mm, the entire baseball helmet 1 becomes large and the lightness is impaired.

  As the material of the reinforcing sheet member 13, for example, polycarbonate, polyolefin, acrylonitrile / butadiene / styrene copolymer, or the like can be used. The thickness of the reinforcing sheet member 13 is, for example, 0.2 mm or more and 1.5 mm or less, more preferably 0.4 mm or more and 1.2 mm or less. In addition, when the thickness of the reinforcing sheet member 13 is less than 0.2 mm, the strength against an operation in which the user widens the ear protection unit 4 is not sufficient. In addition, when the thickness of the reinforcing sheet member 13 exceeds 1.5 mm, processing such as cutting for matching the shape of the inner layer member 12 becomes difficult.

  The reinforcing sheet member 13 may be fixed to the inner layer member 12 by being molded integrally with the inner layer member 12. However, after the inner layer member 12 is formed, the reinforcing sheet member 13 may be an arbitrary fixing member such as an adhesive or a screw. May be fixed to the inner layer member 12. Further, the reinforcing sheet member 13 does not cover the end surface (boundary end surface 17) of the inner layer member 12 located at the boundary portion between the collar portion 3 and the ear protection portion 4, and the main body portion 2 from the inner peripheral side of the ear protection portion 4. It may extend to the inner peripheral side.

  Further, a part of the outer peripheral portion of the reinforcing sheet member 13 may extend to a position facing the outer peripheral portion of the outer shell member 11 (the outer peripheral portion of the ear protection portion 4). That is, as shown in FIG. 3, a part of the outer peripheral portion of the reinforcing sheet member 13 may be disposed so as to face the outer peripheral portion of the outer shell member 11 (for example, in contact with each other). Note that at least a part of the outer peripheral portion of the reinforcing sheet member 13 may be disposed so as to partially overlap the outer peripheral portion of the outer shell member 11.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is particularly advantageously applied to a baseball helmet having an ear protection part.

  DESCRIPTION OF SYMBOLS 1 Baseball helmet, 2 main-body part, 3 heel part, 4 ear protection part, 11 outer shell member, 12 inner layer member, 13 reinforcement sheet member, 14 outer periphery, 15 inner periphery, 16 end surface, 17 boundary end surface, 21 reinforcement rib part .

Claims (4)

An outer shell member including a hemispherical shell-shaped body part, a collar part connected to the body part, and an ear protection part connected to the body part at a position adjacent to the collar part;
An inner layer member made of foam resin, which is laminated on the inner peripheral side of the outer shell member and extends at least from the main body portion to the ear protection portion;
On the inner peripheral surface of the inner layer member, a reinforcing sheet member that extends from a region positioned on the inner peripheral side of the ear protection portion to a region positioned on the inner peripheral side of the main body portion, and has higher hardness than the inner layer member. And
In the region located on the inner peripheral side of the boundary part between the ear protection part and the main body part, an uneven part extending from the main body part side toward the ear protection part side is formed in the reinforcing sheet member. Helmet. The thickness of the outer shell member is 0.2 mm or more and 1.5 mm or less,
The baseball helmet according to claim 1, wherein the outer shell member and the inner layer member are integrally formed.   The reinforcing sheet member is formed on the inner layer member positioned on the inner peripheral side of the ear protection portion, from the portion farthest from the main body portion, through the flange side portion of the outer peripheral portion of the inner layer member. The baseball helmet according to claim 1 or 2, wherein the baseball helmet is a belt-like body extending to the inner layer member positioned on the inner peripheral side of the base.   4. The baseball helmet according to claim 3, wherein the reinforcing sheet member extends to an end surface of the inner layer member positioned on an inner peripheral side of the ear protection portion and is connected to the outer shell member.

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