WO2010082537A1 - Undercap - Google Patents

Abstract

Provided is an undercap (10) for providing a cap with increased shock resistance similar to that of a helmet. This undercap (10) is formed from a flexible material and is provided with a cap body (12) for covering the head of a human when attached to the inside of a cap and a cushioning member (14) formed on the cap body (12). The cap body (12) is provided with a top part (12A) which accommodates the crown of the head and a periphery part (12B) which is formed so as to extend from the periphery of the top part (12A) and hang downward to cover the parts of the head other than the crown. This periphery part (12B) has multiple slits (16) which divide the periphery part (12B) into multiple parts and allow the multiple divided periphery parts (12B) to overlap or to be separated from one other. The cushioning member (14) comprises multiple hollow cylindrical protrusions (18) which open upward.

Description

Under cap

The present invention relates to an improvement of an undercap which is attached to the inside of a normal hat generally worn, for example, for fashion, sports, etc. such as a baseball cap and a straw hat, and protects the head from impact. is there.

For example, in the event of a disaster such as an earthquake or at a construction site, it may be necessary to wear a helmet in order to protect the head of the human body from flying objects and falling objects. However, since this helmet is generally made of a hard material having a predetermined shape, it is difficult to carry on a daily basis and also requires a large space for storage. In addition, helmets that are relatively light but have a weight of 300g or more may damage the cervical spine or feel discomfort if worn, and may affect the mind and body, so in case of a habit of chewing It was a fact that it was accompanied by a sense of resistance to wear and carry it on a daily basis.

In consideration of these points, in recent years, a protective cap has been proposed that adds a function of protecting the head to the hat itself, makes it compact and can be easily carried and is lightweight (for example, Patent Documents 1 to 3 and the like). However, when the head protection function is added to the hat itself as described above, there is a limited choice of hat design choices, and there is a problem that the wearer can not wear the hat design he / she likes.

For this reason, an under cap (inner cap) is also proposed which is formed of a material having buffer properties and used by being worn on the inside of a hat worn regularly (for example, Patent Documents 4 to 6). Etc.). Although these undercaps are intended to ensure impact resistance solely by the characteristics of the material itself, it is difficult to provide sufficient impact resistance performance similar to a helmet only by selection of materials. At the same time, in order to improve impact resistance, it is necessary to secure extremely thick thickness, and there is a problem that it also affects securing of the fashionability which is the purpose of these undercaps.

Not only this point and the material, but also a protective cap or an under cap which secures the impact resistance performance by providing a projection or the like in the under cap has been proposed (see, for example, Patent Documents 7 and 8). However, even with these conventional techniques, sufficient impact resistance performance could not be ensured.

JP 2001-115325 A JP 2003-9324 A Unexamined-Japanese-Patent No. 2006-124906 JP, 2005-163228, A JP 2007-138319 A JP 2007-138320 A Japanese Patent Application Laid-Open No. 10-72719 JP 2002-339140 A

The problem to be solved by the present invention is, in view of the above problems, sufficiently easy to carry on a daily basis and can cope with the situation of a habit and is sufficient without impairing the preference and fashion of the wearer. To provide an undercap with high impact resistance.

The present invention, as a first means for solving the above-mentioned problems, is an undercap comprising a cap body mounted inside a cap and covering the head of a human body and a buffer member formed on the cap body. The undercap is formed of a flexible material, and the cap body is formed to extend from the top surface and the top surface corresponding to the top of the head of the human body and drooping downward by drooping downward. And a peripheral portion covering the head excluding the top of the head, the peripheral portion having a plurality of slits for dividing the peripheral portion into a plurality and allowing overlapping or separation of the plurality of divided portions, and a buffer member The present invention provides an undercap characterized in that it is a hollow cylindrical shape or a plurality of projections having a pentagon or more polygonal shape that opens toward either or both of the upper side and the lower side.

The present invention, as a second means for solving the above-mentioned problems, according to the first solution, is characterized in that the plurality of projections correspond to at least the forehead and the occipital region of the head of the human body in the cap body. It provides an undercap characterized in that it is formed into

The present invention, as a third means for solving the above-mentioned problems, according to the first or second solution means, wherein the plurality of protrusions correspond to the left and right sides of the human body in the cap body And the projections formed on the portions corresponding to the temporal regions are lower than the projections formed on the regions corresponding to the forehead and occipital region. It is provided.

The present invention provides, as a fourth means for solving the above-mentioned problems, the cap main body and the buffer member according to any one of the first to third solutions, wherein the cap body and the buffer member are polyethylene resin, polypropylene resin, polyvinyl chloride resin, Polyethylene terephthalate, synthetic rubber, polybuden, polybutylene, polybutadiene, polyallyl sulfone, polyarylate, polyamidoimide, fluorocarbon resin, ethylene-vinyl acetate copolymer resin, ABS resin, or any of these composite materials The present invention provides an undercap characterized by the following.

The present invention is, as a fifth means for solving the above-mentioned problems, in any one of the first to fourth solutions, the plurality of projections are spaced apart by at least 1.3 mm or more. To provide an undercap characterized by

According to a sixth aspect of the present invention, there is provided an under-cap according to any one of the first through fifth aspects, wherein a vent hole is formed in the cap body. To provide

As a seventh means for solving the above-mentioned problems, in the present invention according to any one of the first to sixth solutions, the cap body is subjected to crease processing at the boundary between the top surface portion and the peripheral portion. To provide an undercap characterized in that

As an eighth means for solving the above-mentioned problems, the present invention is characterized in that the cap main body and the buffer member are formed of a foam material in any one of the first to seventh means for solution. It provides an undercap.

The present invention is, as a ninth means for solving the above-mentioned problems, in any one of the first to eighth solutions, wherein the cap body and the buffer member cover the surface of the protrusion which is a buffer member. It is an object of the present invention to provide an undercap characterized by having a resin sheet.

The present invention, as a tenth means for solving the above-mentioned problems, according to any one of the first to ninth solutions, comprises at least a part of a surface of a cap body and a cushioning member on the head side of a human body. An under cap is provided which is characterized by further comprising a cloth cover which covers the whole or the whole.

According to the present invention, as described above, since the under cap is formed of a flexible material, it can be carried by being folded, and it is possible to cope with unexpected situations on the go etc. Since multiple slits allow overlapping or disengaging of the peripheral part of the cap body, it is suitable for the inside of a hat that is routinely used for human heads of various sizes regardless of age or gender Can be applied to any hat, while maintaining the preference and fashion of the wearer, and at the same time a plurality of hollow cylindrical or pentagonal or more polygonal projections which open upward and downward. Since it is used as a buffer member, it is possible to effectively absorb the impact applied to the head by bending appropriately in the vicinity of the middle and belly, and there is an advantage that sufficient impact resistance performance can be secured.

According to the present invention, as described above, there is a high possibility that a strong impact is applied, and at the same time, when the hat is worn, cylindrical protrusions that are buffer members on portions corresponding to the forehead and the occipital region where gaps easily occur. There is an advantage that the head can be effectively protected from impact while minimizing the influence on the fashionability and the preference of the wearer.

According to the present invention, as described above, the plurality of projections serving as buffer members are also formed in the portion corresponding to the temporal region, and the projections are formed lower than the forehead and the occipital region, There is an advantage that shock resistance can be further effectively enhanced while suppressing the swelling of the temporal region that most affects fashion and minimizing the impact on fashion.

According to the present invention, as described above, since the plurality of projections serving as buffer members are disposed at appropriate intervals, these projections can be appropriately flexed in the vicinity of the middle belly to absorb an impact. There is an advantage that sufficient impact resistance can be secured while being a flexible undercap.

According to the present invention, as described above, since the cap main body and the plurality of projections serving as the buffer member are formed of an appropriate material such as polyethylene which is relatively inexpensive and excellent in impact resistance, the overall thickness is In addition to maintaining thinness that does not significantly affect fashionability, it is possible to secure sufficient impact resistance, in combination with the shapes of the plurality of projections serving as buffer members, and at the same time, cost is enormous. There is a real benefit to achieving this without having to

According to the present invention, as described above, since the vent is formed in the cap body, it is possible to prevent the head from being stuffed and feeling uncomfortable even when worn, and it is worn on a daily basis While being attached to a normal hat without impairing the wearing feeling of the hat, there is an advantage that sufficient impact resistance can be secured.

According to the present invention, as described above, since the cap main body is subjected to crease processing at the boundary between the top surface portion and the peripheral portion, the mounting operation can be smoothly performed when the under cap is mounted inside the hat. As well as being able to do, there is the benefit that the undercap can be worn along the natural shape of the hat as much as possible to minimize the impact on fashion.

According to the present invention, as described above, since the cap body and the cushioning member are formed of a foam material such as foamed polyethylene, for example, weight reduction can be achieved while having sufficient impact resistance. , There is a benefit that can be carried more easily, and can respond appropriately to unexpected situations on the go.

According to the present invention, as described above, the cap body and the cushioning member have the foamed resin sheet (for example, a high-foamed polyethylene sheet (sponge) or the like) covering the surface of the projection which is the cushioning member. There is an advantage that the mark of a projection can be prevented from remaining on the head and the hair after releasing the wear.

According to the present invention, as described above, at least a part or all of the surface of the undercap on the head side of the human body is covered with the cloth cover, so a plurality of projections or the like serving as the cap body and buffer member When the part formed of the resin material of the present invention directly contacts the head, the wearing feeling and the feeling of wearing can be prevented by preventing the occurrence of discomfort and the feeling of use close to that of a normal hat can be secured. There is also a benefit that can absorb sweat from the head in summer and the like.

It is a side view of the under cap of the present invention. It is a top view in the state where the under cap of the present invention was developed on a plane. It is a perspective view which shows the state which mounted the under cap of this invention to the hat. FIG. 4 shows a projection used in the present invention, and FIG. 4 (A) is an enlarged perspective view of a curved portion, and FIG. 4 (B) is an enlarged perspective view of a flat portion. It is a longitudinal cross-sectional view of the processus | protrusion used for this invention. It is a front view of the state where the projection used for the present invention received impact.

Next, the embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 3 show the under cap 10 of the present invention, and the under cap 10 is shown in FIGS. 1 to 3. The cap body 12 is mounted on the inside of the cap 1 to cover the head of the human body, and a buffer member 14 formed on the cap body 12.

The undercap 10 is formed of, for example, a flexible material such as a resin. For this reason, it can be folded compactly and can be stored inside a bag, etc., so it can be carried when going out etc., and can be taken out and worn only when necessary, and unlike hard helmets etc., in storage Not bulky and does not require a large space.

(1. Hat)
In the illustrated embodiment, the hat 1 on which the undercap 10 is mounted is shown as a baseball cap as shown in FIG. 3, but the type is not particularly limited, and so-called caps The present invention can be widely applied to any hat 1 arbitrarily selected by the user, regardless of whether the hat is used.

As such a hat 1, specifically, for example, a cap that a player actually wears in sports such as baseball and golf can be mentioned. In this case, for example, in the case of a baseball hat, although a helmet was used to protect the head when standing at bat, no particular consideration was given to shocks applied to the head during defense. However, by wearing the undercap 10 of the present invention, it is possible to achieve protection of the head from hitting a ball, throwing a ball, and a collision with a person even in defensive situations. Similarly, at the time of golfing, it can contribute to the protection of the head from the flying golf ball. Furthermore, even when applied to a red-and-white cap for exercise of children, etc., it is possible to reduce the impact on the head when falling or the like.

Moreover, even if it is not such a hat 1 for sports, a cloth hat or a straw hat worn on the head on a daily basis, or a hand wash (hollow) etc. can be mentioned. In this case, for example, by simply applying it to a schoolchild's cap for children etc., unlike when wearing a hard so-called helmet, it is easy for children to accept without resistance and secure safety such as children's attending school or walking. You can also. Similarly, when applied to the hat 1 worn by the elderly, the head can be protected from impact when falling or the like. Furthermore, since it can be used for any hat 1, even fashion sensitive women can accept without hesitation.

Furthermore, the purpose and place of attachment of the undercap 10 are not particularly limited, and, for example, in the case of encountering an emergency disaster in a travel destination, outing destination such as outdoor leisure, or in an office or hospital in hospital. And, when driving a bicycle or a car, it can be used for a wide range of purposes in a wide range of places.

(2. Cap body)
As shown in FIGS. 1 to 3, the cap body 12 includes a top surface 12A corresponding to the top of the head of a human body and a peripheral portion 12B formed to extend from the top surface 12A to the periphery. ing. In this case, in particular, as shown in FIG. 2, the cap main body 12 can be made into a substantially circular flat state when expanded in a free state, as shown in FIG. 1 and FIG. As such, due to its flexibility, the peripheral portion 12B can be curved so as to hang downward from the top surface portion 12A. By hanging down in this manner, the surrounding portion 12B can cover the head excluding the top of the human body, specifically, the forehead, the occipital region, and the temporal region, as shown in FIG. it can.

As shown in FIG. 2, a plurality of slits 16 are formed in the peripheral portion 12 </ b> B. The plurality of slits 16 divide the peripheral portion 12 into a plurality of portions as shown in FIG. 2, and the divided peripheral portions 12B partially overlap each other as shown in FIG. It is permissible to deviate. For this reason, as shown in FIG. 3, when the under cap 10 is attached to the inside of the hat 1, the inner diameter may be adjusted to the size of the hat 1 with the surrounding portion 12 B hanging down. it can. Specifically, when the inner diameter of the cap 1 is small, as shown in FIG. In the case where the inner diameter is large, the slit 16 is expanded to expand the diameter so that the divided peripheral portions 12B are separated from each other.

In this case, the size of the under cap 10 is set relatively large according to the largest size of the normally expected hat 1 so that the cap body 12 can cover the entire head as much as possible. It is preferable to set so as to overlap the peripheral portions 12B divided as much as possible. By superimposing in this manner, the under cap 10 can be easily attached to and detached from the inside of the hat 1 while securing the strength at the time of wearing. Further, in this case, for example, when applied to a relatively small size hat 1 such as a children's hat, when a part of the peripheral portion 12B protrudes from the hat 1, a material capable of cutting the undercap 10 It can respond | correspond that it cuts and does not protrude the said surplus part by forming from. This can prevent the design and fashion of the hat 1 from being affected.

Further, the number, size, and shape of the plurality of slits 16 are not particularly limited as long as the size adjustment can be appropriately performed without the trouble of attaching to the hat 1. However, as shown in FIG. 1 and FIG. 2, it is preferable to set the start positions of the plurality of slits 16 at a position where the slope of the drooping of the peripheral portion 12B starts to become steep. As shown in FIG. 1 to FIG. 3, it is desirable to form a circular notch 16 a so that overlapping or separation of the divided peripheral portions 12 B can be smoothly performed. The thickness of the cap body 12 does not affect the weight reduction and the design of the hat 1, so that the overall height including the projections 18 can be reduced as much as possible, and the folding is obstructive. It is preferable to set in the range not specifically mentioned, specifically, about 0.7 mm to 1.5 mm, desirably about 0.8 mm to 1.3 mm, and 1.0 mm can be mentioned as the most desirable value. .

Furthermore, as shown in FIGS. 1 and 2, it is desirable to form a vent 12 a in the cap body 12. This makes it possible to prevent the head from being stuffed and feeling uncomfortable even when worn, and while wearing the normal hat 1 without impairing the wearing feeling of the hat 1 worn daily, it is sufficient Impact resistance can be secured. In this case, it is preferable to form these vent holes 12a in the top surface portion 12A of the cap main body 12, specifically, as shown in FIG. 1 and FIG. This is to ventilate as efficiently as possible considering the rise of steam. In addition, on the inner side of the cap body 12, that is, on the surface directly in contact with the head of the wearer, it is possible to secure the same wearing feeling as the normal hat 1 by sewing a cloth material.

(3. Buffer member)
The cushioning member 14 in the present invention, in particular in the embodiment shown in FIGS. 4 to 6, is composed of a plurality of projections 18 having a hollow cylindrical shape opening upward. As described above, in the present invention, due to the feature of the shape of the projections 18 as the buffer member 14, particularly when impact such as flying objects or falling objects is applied to the projections 18, as shown in FIG. It can be elastically deformed so as to bend in the vicinity of its middle portion to absorb an impact, and sufficient impact resistance can be realized as shown in the embodiment described later.

This is because, for example, in the case of a solid cylindrical shape, as shown in FIG. 6, it becomes difficult to bend in the vicinity of the middle belly and the impact is not easily absorbed but easily transmitted to the head, as in the present invention. The hollow cylindrical shape is considered to be due to the fact that shock absorption by bending in the middle part is performed smoothly. In addition, in the case of a solid cylindrical shape, when a flat plate portion exists on the top surface of the protrusion, it is considered that the stress applied by the impact tends to be concentrated on the flat plate portion and the shock absorbing performance is lowered. Furthermore, if it is a square protrusion, the stress applied by the impact will not be evenly dispersed, and the shock absorption will also decrease. In this respect, in the present invention, as described above, by making the projection 18 into a hollow cylindrical shape and an open shape, it is possible to expand the middle belly and effectively absorb the impact, and, for example, Even when an impact is applied to only a part of the projection 18, the stress can be evenly dispersed to efficiently absorb the impact.

From this, moreover, the projection 18 in the present invention is not necessarily limited to the hollow cylindrical shape opened upward, and similarly, if it is hollow, it is possible to secure bending in the middle part Therefore, it is possible to open downward (open to the head through the cap body 12) or open both upward and downward. Also, the shape is not necessarily limited to a cylindrical shape, and if it is a shape relatively close to a circle, stress due to impact can be dispersed and shocks can be absorbed effectively. It can also be shaped.

In addition to the consideration of such a shape, in the foldable and flexible undercap 10, the selection of the material thereof is also an important factor for securing effective impact resistance. . That is, in particular, when the plurality of projections 18 that are the shock absorbing members 14 are too hard, bending in the above-described manner becomes difficult, and the impact is easily transmitted directly to the head. On the other hand, if it is too soft, it will not be able to effectively absorb the impact because it is compressed and crushed when an impact is applied. Similarly, if the cap body 12 supporting the projection 18 is too soft, the impacted projection 18 will dive into the cap body 12 without bending, while if it is too hard, it becomes difficult to fold and attach The feeling of time is reduced. For this reason, in the present invention, as a result of sharp examination, it is possible to form the cap body 12 and the plurality of projections 18 of polyethylene resin or polypropylene resin in the middle of the plurality of projections 18 as the buffer member 14. It is determined that it is most desirable to secure impact resistance by bending, and by forming the plurality of projections 18 and the cap body 12 from these polyethylene resin or polypropylene resin, it is possible to have a flexibility that can be compactly folded. Also, sufficient impact resistance performance is secured.

In addition, by forming the cap body 12 and the plurality of protrusions 18 from the same material as described above, the entire undercap 10 can be simply integrally molded by, for example, injection molding or the like, and the manufacturing can be performed. Time and cost can also be reduced. In particular, relatively inexpensive polyethylene resin and polypropylene resin are used without using special materials such as fiber reinforced resin, so that manufacturing and provision to users can be realized at low cost. The point is also advantageous. However, the material of the cap main body 12 and the plurality of projections 18 is not necessarily limited to polyethylene resin or polypropylene resin, and the same impact resistance as polyethylene resin etc. can be achieved by shape modification or adjustment of material. In addition, polyvinyl chloride resin, polyethylene terephthalate, synthetic rubber, polybuden, polybutylene, polybutadiene, polyallyl sulfone, polyarylate, polyamide imide, fluorocarbon resin, ethylene-vinyl acetate copolymer, as long as it is possible to secure flexibility and flexibility. It is also possible to use any of resin, ABS resin, or a composite material of these.

Further, not only the outer shape and the material of the plurality of protrusions 18 but also the height thereof is an important factor in securing the impact resistance performance. Specifically, in order to enhance impact resistance, it is desirable to set the height of the projection 18 as high as possible, but if it is too high, it affects the design of the hat 1 to be worn, making it difficult to ensure fashionability It becomes. On the other hand, if it is too low, there is a risk that the shock absorbing ability due to bending may be reduced. In this respect, in the present invention, as the height (the height of only the portion protruding from the cap body 12) that can ensure sufficient impact resistance performance without affecting the fashionability, specifically, Preferably, 7 mm to 13 mm, more preferably about 8 mm to 11 mm (the overall height of the cap body 12 plus 1.0 mm is 9 mm to 12 mm), and 10 mm is the most desirable value. In particular, according to this, it is almost equivalent to the “JIS T8131” standard for industrial safety caps and, consequently, the standard for preventing the danger of falling in the protective cap standard of the Ministry of Health, Labor and Welfare, which establishes the same test method. Impact resistance can also be cleared.

Further, it is considered that not only the height but also the outer diameter, the inner diameter, and the thickness of these projections 18 affect the impact resistance performance. For this reason, the outer diameter of the cylindrical projection 18 having an opening is preferably about 5 mm to 8 mm, more preferably 5.5 mm to 6.5 mm (± 0.5 mm at the best value 6.0 mm described below) It can be set to the included value, and can be set to 6.0 mm as the most desirable value. In this case, if the thickness is too thick, it is considered that the shock absorption due to the swelling in the middle and the inside lacks, while if it is too thin, the projections 18 are too crushed and the impact is transmitted. As a result, if the outer diameter and thickness are determined, the appropriate range of the inner diameter will necessarily be determined, and from the above suitable range of the outer diameter, the inner diameter is preferably about 2.5 mm to 6 mm (lower limit The value is the lower limit of 5 mm in the preferred range of the outer diameter, and the upper limit is 1.0 mm at 8 mm, which is the upper limit of the preferred range of the outer diameter. Thickness is more preferably 3.0 mm to 4.5 mm (Similarly, the lower limit is a thickness of 1.25 mm at the lower limit of 5.5 mm of the desired range of the outer diameter) Values and upper limit values are the desired range of the above outer diameter It can be set when the thickness of 1.0mm in 6.5mm which is the upper limit), the most desired value can be set to 3.5 mm.

As a result, in combination with the above-described material and shape characteristics, as shown in the examples to be described later, even though it is a flexible material, it passes a test corresponding to the JIS T8131 standard having impact resistance similar to that of a helmet. A high level of shock absorption performance can be realized, and the concept of the conventional foldable protective cap or undercap can be overturned.

In addition, not only the shape, the material, and the size of each of the protrusions 18 but also their arrangement can be considered to influence the securing of sufficient impact resistance. In this respect, in the present invention, the plurality of projections 18 are preferably at least 1.3 mm or more, and preferably 10 mm or less, so as not to be too sparse, more preferably about 5 mm By arranging them at intervals, it is considered as a preferable arrangement.

Further, as shown in FIG. 1 to FIG. 3, the plurality of projections 18 are formed on at least a portion of the cap body 12 corresponding to the forehead and the occipital region of the head of the human body. This makes it possible to create a gap between the inside of the hat 1, especially near the forehead and back, and at the same time reduce the influence on the design while minimizing the influence on the fashionability and the preference of the wearer It is possible to effectively protect the forehead and the back of the head which are likely to be subjected to an impact from the impact.

On the other hand, as shown in FIGS. 1 to 3, it is desirable that the plurality of projections 18 be formed also on portions of the cap body 12 corresponding to the left and right side portions of the human body. This can further enhance the head protection function. However, in this case, it is desirable that the projections 18 formed on the portions corresponding to the left and right side portions be lower than the projections 18 formed on the portions corresponding to the forehead and the occipital region. This is in addition to the fact that the left and right temporal regions are not particularly likely to be subjected to a strong impact compared to the forehead and occipital region, and in particular, if the left and right temporal regions of the hat 1 can expand, The impact on the design of the hat 1 is large compared to the head and the back of the head, so that the impact is improved more effectively while suppressing this to minimize the impact on the fashion. In this case, the heights of the protrusions 18 formed on the portions corresponding to the left and right side portions are formed on the portions corresponding to the forehead and the occipital region within the preferred height range of the protrusions 18 described above. It is formed at a lower height than the projection 18. If the plurality of projections 18 are formed at least in portions corresponding to the forehead and back of the head of the human body, they do not prevent the formation of the entire cap body 12. However, in such a case, it is necessary to take care so that the protrusions 18 do not overlap when the cap body 12 is superimposed.

(4. Other Embodiment 1: Material)
The cap body 12 and the buffer member 14 can also be formed of a foam material. As a result, weight reduction can be achieved while having sufficient impact resistance, and carrying becomes even easier, and it is possible to appropriately cope with an unexpected situation on the go. In this case, as the foam material, specifically, a material obtained by adding a foaming agent or the like to the above-described polyethylene resin or polypropylene resin can be suitably used.

However, in this case, the foaming rate is preferably set to a low foaming rate of about 2 to 3 times. If the foaming rate is increased too much, the rigidity decreases and it becomes difficult to secure the self-retaining property, and in particular, there is a risk that the shock absorption ability due to bending in the middle part of the protrusion 18 which is the buffer member 14 may be reduced. It is because there is.

(5. Other Embodiment 2: Foamed Resin Sheet)
Further, the cap body 12 and the buffer member 14 may be configured to have a foamed resin sheet (not shown) covering at least the surface of the protrusion 18 which is the buffer member 14. When this foamed resin sheet is used, it is possible to prevent the marks of the projections 18 from remaining on the head and the hair after releasing the wear. Specifically, for example, a highly foamed polyethylene sheet (sponge) or the like can be used as the foamed resin sheet, and in order not to leave the marks of the projections 18, all the projections 18 are entirely covered. Preferably, a foamed resin sheet is installed.

(6. Other Embodiment 3: Cloth cover)
Furthermore, the undercap 10 of the present invention can also be provided with a cloth cover not shown. Specifically, a cloth cover (not shown) formed substantially in association with the shape of the cap main body 12 is formed, and by this cloth cover, the surface of the cap main body 12 and the cushioning material 14 on the head side of the human body is formed. At least a part or the whole can be covered by a cloth cover.

As a result, the head portion of the human body comes into contact with the cloth cover, so that the portion formed of the resin material such as the cap body 12 and the plurality of projections 18 serving as the buffer member 14 directly contacts the head portion. While being able to prevent the fall of a wearing feeling and generation | occurrence | production of discomfort, the wearing feeling near normal hats, and a use feeling can be ensured, the sweat from the head in a summer etc. can be absorbed especially. Therefore, as this cloth cover, it is preferable to use the same material as the cloth used for a normal hat.

Next, various experiments carried out to obtain an appropriate cushioning member 14 (protrusion 18) in the undercap 10 of the present invention will be described. Specifically, an impact absorption test was first conducted on polystyrene foam, which is also used as a shock absorbing material in general industrial helmets, in order to select appropriate materials. The impact absorption test was performed in accordance with JIS T8131 standard. Specifically, a polystyrene foam is set on a portion corresponding to the forehead or occipital region of a human head model, and a 5 kg striker is allowed to freely fall from a height of 1 m to the polystyrene foam, and a numerical test is performed to express impact absorption performance numerically The In this standard, an impact absorption value of less than 10 kN is a criterion for passing.

In this case, a cubic box shape (15 mm in height, 10 mm in width and 10 mm in depth) as Experimental Example 1 using 40-fold expanded polystyrene (a product formed by setting the expansion ratio to 40 times), Experimental Example 2 The hollow cylindrical shape (height 10 mm, diameter 25 mm, inner diameter 15 mm, thickness 10 mm) and trapezoid shape (height 10 mm, width 20 mm at the lower side, width 17 mm at the upper side) as Experimental Example 3 were respectively set. The test results for these Experimental Examples 1 to 3 are shown in Table 1 below.

　

These Experimental Examples 1 to 3 were carried out to confirm whether shock absorption could not be ensured in a shape in which the height is made as low as possible with expanded polystyrene used as a general buffer material. It is a thing. However, as can be understood from Table 1, it was found that, even with Experimental Example 1 in which the height was 15 mm, the buffer member 14 made of expanded polystyrene could not pass the test equivalent to the JIS standard. For this reason, it came to the conclusion that Styrofoam is unsuitable as the material of the undercap which needs to be compactly folded and carried.

Therefore, next, with respect to other materials considered to have a buffer action while having flexibility, an impact absorption test was similarly conducted in accordance with the JIS standard. Specifically, a thermal insulation hose (diameter 35 mm, inner diameter 10 mm, wall thickness 25 mm: Inukai) having a square sponge (height 20 mm) as experimental example 4, an outer layer made of vinyl chloride resin and an inner layer made of foamed polyethylene as experimental example 5. An electric cushion (20 mm in height) with the openings cut vertically (20 mm in height) by cutting (ringing) product length PME-16-10φ) to a length of 20 mm. So-called bubble wrap (registered trademark): height 30 mm), square low resilience material (height 100 mm: made by Kyoto Nishikawa Co., Ltd.) made of urethane foam used for pillows and the like as experiment example 7, and also made of urethane foam as experiment example 8 Square low-repulsion material (height 35 mm: made by Kyoto Nishikawa Co., Ltd.), Example 10 Square foam polyethylene of 100 mm square (height 20 mm), experiment 10, a cylinder made of polyethylene resin on a square low resilience material (height 20 mm, made by Kyoto Nishikawa Co.) made of 100 mm square foam polyethylene (height 30 mm) and 20 mm thick urethane foam as Example 11 The impact absorption test was conducted using a set (total height 35 mm) of The results are shown in Table 2 below.

　

In these experimental examples 4 to 11, the height was made as low as possible to search for a material capable of appropriately absorbing shock without affecting the fashion. As can be seen from Table 2, Experimental Example 7 using a low repulsion material cleared the acceptance criteria, but the height is 100 mm, and it was found that it was difficult to wear inside a general hat. In the experimental example in which the height was set in the range of 20 to 35 mm, a test equivalent to the JIS standard could not be cleared for any of the materials except experimental example 11.

From this, if the polyethylene resin used in Experimental Example 11 and the polypropylene resin having the same properties as this are used, there is a possibility that sufficient impact resistance performance can be realized while being compactly folded and carried. I found out there. However, also in this experimental example 11, the overall height is 35 mm, and in order to be attached to the inside of the hat 1, further thinning is desired. In this case, since the low repulsion material is used as the base material (corresponding to the cap body 12) while the height of the cylinder itself is greater, it may be necessary to have a certain thickness. We focused on a cylinder made of polyethylene resin and tried to reduce the overall height while searching for the limit that could ensure sufficient shock absorption performance.

In this case, since the result of shock absorption of the cylinder made of polyethylene resin was good, the height can be further reduced by using polyethylene resin or polypropylene resin of almost the same quality as the base material as well. Also, considering that the impact can be sufficiently absorbed, a cylinder made of polyethylene resin having various shapes was placed on a plate-like polypropylene resin having a thickness of 1 mm, and a suitable example was searched. Specifically, a ribbed bottomed cylinder (having a rib formed at three places on the side from the middle to the lower side of the cylinder) having a height of 13 mm as Experimental Example 12 and having a height of 7.3 mm as Experimental Example 13 The bottomed cylinder with a height of 7.2 mm was set as Experimental Example 14, the bottomed cylinder with a height of 10 mm as Experimental example 15, and the bottomed cylinder with a height of 9 mm as Experimental example 16. In this case, in Experimental Examples 13 and 14, a plurality of cylinders are installed without an interval, while an interval of 5 mm is opened in Experimental Example 15, and an interval of 3 mm in Experimental Example 16. Open and set up multiple cylinders. In Experimental Example 12, the cylinder main bodies were separated by the depth of the ribs by arranging the ribs adjacent to each other and arranging a plurality of cylinders. Each of these cylinders had a diameter of 6 mm, an inner diameter of 4 mm, and a thickness of 1 mm. Also in these experimental examples 14 to 16, the impact absorption test was performed in accordance with the JIS standard in the same manner as the experimental examples 1 to 11. The results are shown in Table 3 below.

　

As can be understood from this Table 3, Experimental Example 15 (cylinder height 10 mm: overall height including plate thickness 1 mm is 11 mm) and Experimental Example 16 (a cylinder having a height of 10 mm) in which a plurality of cylinders are spaced apart. Only the height 9 mm of the cylinder: the total height including the thickness 1 mm of the plate-like polypropylene was 10 mm), and it was possible to secure a sufficient impact resistance performance by clearing the test corresponding to the JIS standard.

On the other hand, since the reference value could not be cleared in Experimental Example 12 using a ribbed cylinder in this Table 3, the cylinder absorbs the impact by bending in the vicinity of the middle as shown in FIG. Was guessed. That is, in Experimental Example 12, it was found that the rib formed on the side surface of the cylinder can not sufficiently absorb the impact because it suppresses the bending of the cylinder.

Similarly, in Experimental Examples 13 and 14 in which the distance between the cylinders was not set, the reason why the reference values could not be cleared was that the cylinders were placed close to each other, resulting in an impact. In addition, as shown in FIG. 6, it is considered that the swelling in the vicinity of the middle belly restricted the absorption of the impact. From this, it is considered that the cylinder absorbs the impact by bending near its middle, and when installing the projections 18 which are the buffer members 14, they should be installed with a certain distance from each other. It reached the conclusion with.

Therefore, further, if the distance between the cylinders (protrusions 18) is at least set, it is possible to examine whether the cylinder can bend in the middle as shown in FIG. It was 7.3 mm when the largest outside diameter (d: refer to Drawing 6) near the belly inside which swelled when receiving an impact about experimental example 16 which was given was measured. That is, from the diameter of 6 mm in the natural state, the impact was absorbed by expanding the whole as much as 1.3 mm and 0.65 mm to the left and right respectively. From this, it is possible to allow an expansion of at least 0.65 mm left and right for each cylinder (protrusion 18), specifically, between the two cylinders by at least double the expansion to the left and right of each cylinder It is confirmed that sufficient impact resistance performance can be secured by clearing a test equivalent to the JIS standard if it is set within a certain range of 1.3 mm or more and the gap which is not too sparse as the upper limit, specifically about 5.0 mm. It was done. In fact, in each of Experimental Examples 15 and 16 in which the distance between the cylinders is 1.3 mm or more and 5.0 mm or less, sufficient impact resistance performance can be secured by clearing the test equivalent to the JIS standard.

The present invention relates to hats for various sports such as baseball caps, golf caps, red and white caps for children, children's school caps, and further, cloth hats and straw hats worn for fashion, caps, hats, etc. Regardless, it can be widely applied.

Claims (10)

1. In an undercap mounted on the inside of a cap and including a cap body covering a head of a human body and a buffer member formed on the cap body, the undercap is formed of a flexible material, and the cap body is A top surface corresponding to the top of the head of the human body, and a periphery covering the head excluding the top of the human body by being extended downward from the top surface and hanging downward; The peripheral portion has a plurality of slits that divide the peripheral portion into a plurality and allow overlapping or separation of the plurality of divided peripheral portions, and the buffer member is directed to either or both of the upper and lower sides. An undercap comprising a plurality of projections having a hollow cylindrical shape or a pentagon or more polygonal shape that is open.
2. The undercap according to claim 1, wherein the plurality of protrusions are formed on at least a portion of the cap body corresponding to the forehead and the occipital region of the head of the human body. cap.
3. The undercap according to any one of claims 1 and 2, wherein the plurality of protrusions are also formed on portions of the cap body corresponding to left and right side portions of the human body, the side An undercap characterized in that a protrusion formed on a portion corresponding to a head is formed lower than a protrusion formed on a portion corresponding to the forehead and the back of the head.
4. The undercap according to any one of claims 1 to 3, wherein the cap body and the buffer member are made of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polyethylene terephthalate, synthetic rubber, polybuden, polybutylene, An undercap characterized in that it is formed of any one of polybutadiene, polyallyl sulfone, polyarylate, polyamide imide, fluorine resin, ethylene-vinyl acetate copolymer resin, ABS resin, or a composite material thereof.
5. The undercap according to any one of claims 1 to 4, wherein the plurality of protrusions are spaced apart by at least 1.3 mm.
6. The undercap according to any one of claims 1 to 5, wherein a vent hole is formed in the cap body.
7. The undercap according to any one of claims 1 to 6, wherein the cap body has a creasing applied to a boundary between the top surface portion and the peripheral portion. .
8. The undercap according to any one of claims 1 to 7, wherein the cap body and the buffer member are formed of a foam material.
9. The undercap according to any one of claims 1 to 8, wherein the cap body and the buffer member have a foamed resin sheet which covers the surface of the protrusion which is the buffer member. Under cap.
10. The undercap according to any one of claims 1 to 9, further comprising a cloth cover for covering at least a part or all of the head body side surface of the cap body and the buffer member. Under cap characterized by having.

Images