WO2024089930A1

WO2024089930A1 - Helmet

Info

Publication number: WO2024089930A1
Application number: PCT/JP2023/021383
Authority: WO
Inventors: 栄治磯部
Original assignee: 株式会社Shoei
Priority date: 2022-10-28
Filing date: 2023-06-08
Publication date: 2024-05-02
Also published as: JP2024064333A

Abstract

This helmet comprises: a hat body including an opening for a field of view on the front side thereof; a shield attached to the hat body so as to able to open/close the opening for a field of view; an external air introduction mechanism configured to blow air onto the inner surface of the shield which is in a closing state in which the opening for a field of view is closed. The external air introduction mechanism comprises: an accommodation part constituted inside the hat body; and a mesh member attachably/detachably accommodated in the accommodation part. The accommodation part comprises: an outer wall member having an external air introduction port which connects the inside and the outside; an inner wall member located facing the outer wall member; an attachment/detachment port for attaching/detaching the mesh member; and a blow port for blowing air suctioned from the external air introduction port onto the inner surface of the shield which is in the closed state. The mesh member comprises a mesh section facing the external air introduction port in an accommodated state in which the mesh member is accommodated in the accommodation part.

Description

Helmet

This disclosure relates to helmets.

Some motorcycle helmets are equipped with an air inlet mechanism, such as an air intake or defroster, that uses wind pressure to draw in outside air into the helmet. Helmets equipped with an air inlet mechanism can improve the comfort of wearing the helmet by increasing the breathability inside the helmet. For example, the helmet described in Patent Document 1 has a front air intake. This front air intake has a first frame and a second frame, and a grill and a filter that are interposed between the first frame and the second frame.

European Patent No. 2319339

The outside air intake mechanism is designed to take in outside air from the outside air inlet by using the wind pressure applied to a moving motorcycle. Therefore, foreign objects such as dust and small insects can enter the helmet along with the outside air from the outside air inlet. If foreign objects get inside the helmet, it can make it less comfortable to wear.

A helmet for solving the above problem comprises a hat body having a field of vision opening at the front, a shield attached to the hat body so as to be able to open and close the field of vision opening, and an outside air inflow mechanism configured to blow air against the inner surface of the shield in a closed state that blocks the field of vision opening, the outside air inflow mechanism comprising a storage section configured inside the hat body and a mesh member removably stored in the storage section, the storage section comprising an outer wall member having an outside air inlet connecting the inside and the outside, an inner wall member positioned opposite the outer wall member, an attachment/detachment opening for attaching and detaching the mesh member, and an air outlet that blows air taken in from the outside air inlet against the inner surface of the shield in the closed state, the mesh member comprising a mesh section that faces the outside air inlet when stored in the storage section.

FIG. 1 is a perspective view of a helmet in one embodiment. FIG. 2 is a perspective view of the main part of the peripheral portion of the outside air inlet mechanism of the helmet of FIG. FIG. 3 is an exploded perspective view of the outside air inlet mechanism of the helmet of FIG. 4 is a perspective view of an outer wall member and an inner wall member which constitute a housing portion for housing a mesh member of the helmet of FIG. 1. FIG. 5 is a cross-sectional perspective view of a storage portion for storing a mesh member of the helmet of FIG. 1. FIG. 6 is a perspective view of a mesh member of the helmet of FIG. 1 as viewed from the front. 7 is a perspective view of the mesh member of the helmet of FIG. 1 as viewed from the rear. FIG. 8 is a cross-sectional perspective view showing a state in which a mesh member is accommodated in the accommodation portion of the helmet of FIG. 1. FIG. FIG. 9 is a cross-sectional perspective view showing the state of the pressure contact portion of the helmet of FIG. FIG. 10 is a perspective view showing a state in which the outside air inlet of the helmet in FIG. 1 is closed by a shutter. FIG. 11 is a perspective view showing a state in which the shutter opens the outside air inlet of the helmet in FIG.

Hereinafter, one embodiment of a helmet according to the present disclosure will be described with reference to the drawings.
In this embodiment, the directions, front, rear, left, right, top, and bottom, as seen from the helmet wearer, are shown as the front, rear, left, right, top, and bottom relative to the helmet.

[Overall helmet configuration]
The helmet 1 includes a shell 10 and a liner as an impact absorbing material disposed inside the shell 10. The shell 10 constitutes the outer shell of the helmet 1. The shell 10 is a resin member having a hemispherical shape. The material constituting the shell 10 is selected from, for example, acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), and thermosetting resin impregnated with reinforcing fibers. The liner is composed of an impact absorbing member made of foamed resin (for example, polystyrene foam), an interior pad made of urethane foam, and the like.

The helmet body 10 has a field of vision opening 11 and a wearing opening 12. The field of vision opening 11 is formed in the front area of the helmet body 10. The field of vision opening 11 is an opening that extends wider in the left-right direction than in the up-down direction to ensure the wearer's field of vision. A shield 13, which is a light-transmitting plate member, is attached to the field of vision opening 11.

The shield 13 is a plate-like member that is optically transparent. The shield 13 is curved to follow the curved shape of the outer surface of the hat body 10, and is large enough to block the field of view opening 11. The left and right ends of the shield 13 are rotatably attached to the areas on both sides of the field of view opening 11, so that the shield 13 can open and close the field of view opening 11. The shield 13 transitions from a closed state in which it blocks the field of view opening 11 to an open state in which it moves above the field of view opening 11 and opens the field of view opening 11. In the closed state, the shield 13 improves the visibility of the wearer while preventing foreign objects, rain, wind, etc. flying from the front from entering the helmet 1.

The wearing opening 12 is formed in the lower region of the hat body 10. The wearing opening 12 is an opening for inserting the wearer's head. A pair of left and right chin straps are attached to the wearing opening 12. The base ends of each of the left and right chin straps are fixed to the hat body 10. A buckle is attached to the free end of one of the chin straps. A ratchet is attached to the free end of the other chin strap. The pair of left and right chin straps become a continuous chin strap when the ratchet and buckle are joined together.

The hat body 10 is provided with a mechanism for sucking in outside air to introduce it into the interior of the helmet 1 and improve the fit. Specifically, the area between the field of view opening 11 and the wearing opening 12 is the front lower area 14. The front lower area 14 is an area that corresponds to the wearer's chin. A defroster 16 is provided in the center in the left-right direction of the front lower area 14. The defroster 16 is provided in a position along the lower edge of the field of view opening 11. An air outlet 20 is provided in the rear upper area 19, which is behind the front upper area 17. The rear upper area 19 is an area that corresponds to the back of the wearer's head.

In the helmet body 10 described above, air is drawn in through the defroster 16 and other parts due to wind pressure while riding. The outside air that flows into the interior of the helmet 1 is guided inside and exhausted through the air outlet 20 (see arrow A in Figure 1). The defroster 16 blows the air it has taken in against the inner surface of the closed shield 13, from the lower end to the upper end of the field of view opening 11. This allows the shield 13 to suppress the formation of frost, ice, condensation, and the like.

[Defroster]
2 and 3, the defroster 16 serving as an outside air inlet mechanism includes an outer wall member 21 and an inner wall member 22. The defroster 16 further includes a base 23, a shutter 24, and a mesh member 25.

The outer wall member 21 is a face cover that constitutes the front lower region 14 of the hat body 10. The outer wall member 21 is a member that extends to the chin region of the wearer. The inner wall member 22 is a member that is layered on the inner surface of the outer wall member 21. The inner wall member 22 is layered on the inner surface of the outer wall member 21 to constitute a storage section 26 (see FIG. 5) that stores the mesh member 25. The upper end of the storage section 26 is open. This opening corresponds to an attachment/detachment opening 27 for attaching and detaching the mesh member 25. This attachment/detachment opening 27 opens upward. The attachment/detachment opening 27 is an opening that faces the inner surface of the shield 13 in a closed state, and is also an air outlet that blows air against the inner surface of the shield 13. The base 23 is a member that is layered on the outer surface of the outer wall member 21. The shutter 24 is a member that is movably attached to the outer surface of the base 23.

[Outer wall member]
As shown in FIG. 3, the outer surface of the outer wall member 21 is provided with a component placement recess 31 for placing the base 23 at the center in the left-right direction. The component placement recess 31 is provided with a central opening 33 and an outside air inlet 34, which is a component of the defroster, at the upper center in the left-right direction. The outside air inlet 34 is provided in a pair on the left and right sides, for example, on both sides of the central opening 33. The central opening 33 is a rectangular through hole. The central opening 33 is a component placement opening in which a locking member 30 (see FIG. 2) that locks the shield 13 in a closed state and the like are disposed. The pair of left and right outside air inlets 34 are rectangular through holes that extend in the left-right direction from the central opening 33. The central opening 33 and the outside air inlet 34 are positioned side by side in the left-right direction.

As shown in Figures 4 and 5, the inner surface of the outer wall member 21 is provided with a first storage recess 36 that recesses toward the outer surface to form the storage section 26. A central opening 33 and a pair of left and right outside air inlets 34 are located on the bottom surface 36a of the first storage recess 36. The first storage recess 36 is a recess that extends in the left-right direction from the left-right center and also extends downward from the center. The first storage recess 36 is covered by the inner wall member 22 to form the storage section 26 that stores the mesh member 25 between the outer wall member 21 and the inner wall member 22.

The inner surface of the outer wall member 21 has multiple ribs 37 below the first storage recess 36, and below the central opening 33 and the pair of left and right outside air inlets 34. The multiple ribs 37 are parallel to each other and extend in the left-right direction. The multiple ribs 37 are used to attach part of a liner such as a cushion. In addition, through holes 38 for attaching the base 23 are formed below the multiple ribs 37. The area above the upper rib 37 becomes the area that constitutes the storage section 26. The mounting protrusions 63 of the base 23 (see Figure 3) are inserted into the through holes 38.

[Inner wall member]
The inner wall member 22 is a member disposed on the inner surface of the outer wall member 21, and has a basic shape following the curved shape of the outer wall member 21. The inner surface of the inner wall member 22 is the surface that faces the wearer, and the outer surface is the surface that faces the inner surface of the outer wall member 21. The outer surface of the inner wall member 22 is provided with a second accommodating recess 41 that covers the first accommodating recess 36.

The second storage recess 41 bulges on the inner side to form a recess on the outer side. The upper end of the second storage recess 41 corresponds to the opening end for forming the attachment/detachment opening 27. The air flowing in from the outside air inlet 34 passes through the mesh member 25 and then hits the bottom portion 41a of the second storage recess 41. The bottom portion 41a is a wall that changes the direction of the air flow that hits it to the direction of the opening end for forming the attachment/detachment opening 27. A lower wall portion 41b that rises from the bottom portion 41a is provided below the opposite side to the opening end of the bottom portion 41a. The lower wall portion 41b is a wall that forms the storage section 26. The lower end of the inserted mesh member 25 abuts against the lower wall portion 41b.

The bottom surface 41a has a groove 42 extending in the left-right direction. The groove 42 is an attachment groove for attaching interior parts of the helmet 1. A protrusion 43 is provided in the bottom surface 41a of the second storage recess 41, approximately in the center in the left-right direction. The protrusion 43 supports parts such as the locking member 30 from the inside.

The inner wall member 22 has a downward projection 44 extending downward from the center in the left-right direction. The downward projection 44 is arranged to cover the multiple ribs 37. The inner wall member 22 has mounting bosses 45 on both left-right sides of the second storage recess 41. The outer wall member 21 has mounting holes 39 corresponding to the mounting bosses 45 on both sides of the first storage recess 36. The outer wall member 21 and the inner wall member 22 are joined at the mounting bosses 45 and the mounting holes 39 with fixing members such as screws. This forms a storage section 26 between the outer wall member 21 and the inner wall member 22. The storage section 26 is a space that is closed on the left, right, and bottom, and only the upper end is open, with the upper end serving as an attachment/detachment opening 27. A mesh member 25 is inserted into the storage section 26.

The inner wall member 22 is provided with

stoppers

46a, 46b, 46c, and 46d that prevent the mesh member 25 from entering too far into the storage section 26 when the mesh member 25 is stored in the storage section 26 through the attachment/detachment opening 27. That is, the

stoppers

46a, 46b, 46c, and 46d prevent the mesh member 25 from entering too far downward in the storage section 26. The

stoppers

46a, 46b, 46c, and 46d are erected on the bottom surface portion 41a and are abutment pieces against which the tips of the

restriction pieces

57a, 57b, 57c, and 57d (see Figures 6 and 7) of the mesh member 25 abut. The

stoppers

46a, 46b, 46c, and 46d are located between the upper end that constitutes the attachment/detachment opening 27 and the lower wall portion 41b in the vertical direction.

The

stoppers

46a, 46b are abutment pieces located at both ends in the left-right direction of the second accommodating recess 41. The

stoppers

46a, 46b are located at approximately the same height as the groove portion 42.
The

stoppers

46c and 46d are central abutment pieces located between the

stoppers

46a and 46b. The

stoppers

46c and 46d are located between the groove 42 and the protrusion 43.

Furthermore, an engagement recess 47 is provided at the upper end constituting the attachment/detachment opening 27. As an example, the engagement recess 47 is provided at the center in the left-right direction. An engagement piece 58 (see Figures 6 and 7) of the mesh member 25 engages with the engagement recess 47.

[Mesh member]
As shown in FIG. 6 and FIG. 7, the mesh member 25 is a member that can be attached to and detached from the storage section 26. The mesh member 25 is an elastic resin molded body. The mesh member 25 includes a mesh portion 51, a reinforcing wall portion 52, and a connecting wall portion 53. Two mesh portions 51 are provided corresponding to the pair of left and right outside air inlets 34, respectively. Each mesh portion 51 has a size that can block each outside air inlet 34. Each mesh portion 51 has, for example, a rectangular shape that is long in the left-right direction. Each square (hole) of the mesh portion 51 has a diameter of several millimeters. Each square has a size that small insects can be caught in. Each square is not fine enough to capture foreign particles of several hundred μm or less or several tens of μm or less. When capturing foreign particles, a finer mesh filter such as a nonwoven fabric may be further disposed on the mesh portion 51. The two mesh portions 51 are positioned apart so as to avoid the position of the central opening 33.

Each mesh portion 51 has a plurality of reinforcing walls 52 standing on one surface facing the inner wall member 22 in the up-down direction (first direction) intersecting with the longitudinal left-right direction (second direction). The reinforcing walls 52 suppress deformation of the mesh portion 51. The other surface of the mesh portion 51 facing the outer wall member 21 is a surface that is abutted against and pressed against the bottom surface 36a of the first storage recess 36. The mesh portion 51 is fixed to the base end of each reinforcing wall portion 52. The tip of each reinforcing wall portion 52 opposite the base end is a free end. The total dimension of the thickness of the mesh portion 51 and the height of the reinforcing wall portion 52 corresponds to the distance between the bottom surface 36a of the first storage recess 36 and the bottom surface 41a of the second storage recess 41 in the storage portion 26. The tip of the reinforcing wall portion 52 is close to the bottom surface 41a of the second storage recess 41.

In each mesh portion 51, the reinforcing wall portion 52 is, for example, a straight wall extending in the vertical direction. The reinforcing wall portion 52 includes an outer end reinforcing wall portion 52a, an inner end reinforcing wall portion 52b, and an inner end reinforcing wall portion 52c. The outer end reinforcing wall portion 52a is erected at the outer end of each mesh portion 51 in the left-right direction. The inner end reinforcing wall portion 52b is erected at the inner end of each mesh portion 51 in the left-right direction. The inner end reinforcing wall portion 52c is erected between the outer end reinforcing wall portion 52a and the inner end reinforcing wall portion 52b.

The lower ends of all the reinforcing walls 52 are aligned with the lower end of the mesh portion 51. The upper end of the outer end reinforcing wall 52a is located above the upper end of the mesh portion 51, but is lower than the upper ends of the inner end reinforcing wall 52b and the inner reinforcing wall 52c. The upper ends of the inner end reinforcing wall 52b and the inner reinforcing wall 52c are located above the upper end of the outer end reinforcing wall 52a, and are aligned in height. The upper ends of the inner end reinforcing wall 52b and the inner reinforcing wall 52c are provided with hook-shaped engaging claws 54. Each engaging claw 54 protrudes toward the mesh portion 51. Each engaging claw 54 engages with the upper edge 21a of the outer wall member 21 when the mesh member 25 is housed in the housing portion 26. The upper edge 21a is an edge that constitutes the lower edge of the viewing opening 11. When the edge of the liner is disposed, the upper edge 21a engages with the edge of the liner.

In each mesh portion 51, between the outer end reinforcing wall portion 52a and the inner reinforcing wall portion 52c, between adjacent inner reinforcing wall portions 52c, and between the inner reinforcing wall portion 52c and the inner end reinforcing wall portion 52b, flow paths 55 are formed that change the direction of the air flowing in from the outside air inlet 34 and direct it toward the attachment/detachment opening 27. The inner reinforcing wall portion 52c has a communication portion 56 that is recessed into a concave shape on the edge portion that corresponds to the bottom surface portion 36a of the first storage recess 36. The communication portion 56 connects adjacent flow paths 55.

The connecting wall portion 53 crosses the reinforcing wall portion 52. That is, the connecting wall portion 53 is a band-shaped portion that connects the upper ends of the reinforcing wall portion 52, and is located behind the engaging claw 54. The connecting wall portion 53 faces the bottom surface portion 41a of the second storage recess 41. The connecting wall portion 53 also connects the two mesh portions 51.

Both ends of the connecting wall portion 53 also extend to the upper end of the outer end reinforcement wall portion 52a. Specifically, the connecting wall portion 53 has a constant width at the inner end reinforcement wall portion 52b and the inner reinforcement wall portion 52c, but widens downward in the portion from the inner reinforcement wall portion 52c closest to the outer end reinforcement wall portion 52a to the outer end reinforcement wall portion 52a. This widened portion forms the pressure connection portion 53a. The connecting wall portion 53 is configured to be curved to follow the bottom portion 41a of the second accommodating recess 41 at the inner reinforcement wall portion 52c, and to be slightly curved in the opposite direction at the pressure connection portion 53a, which is the outer end reinforcement wall portion 52a. When the pressure contact portion 53a is accommodated in the accommodation portion 26, the pressure contact portion 53a is pressed against the bottom surface portion 41a of the second accommodation recess 41, causing the connecting wall portion 53 to elastically deform and press the mesh portion 51 against the bottom surface portion 36a of the first accommodation recess 36.

The connecting wall 53 has a central reinforcing wall 52d at the portion connecting one mesh portion 51 to the other mesh portion 51. The central reinforcing wall 52d has an engagement claw 54 like the other reinforcing walls 52a to 52c, but does not protrude below the connecting wall 53. Since no mesh portion 51 is provided at the portion connecting one mesh portion 51 to the other mesh portion 51, a recess is formed to allow parts placed in the central opening 33 to escape.

Furthermore, restricting

pieces

57a, 57b, 57c, and 57d are provided on the lower edge of the connecting wall portion 53. Restricting

pieces

57a and 57b are both end restricting pieces that extend downward from the lower edge of the connecting wall portion 53, which is the portion that constitutes the pressure contact portion 53a. Restricting

pieces

57c and 57d are central restricting pieces that extend downward from between the inner end reinforcing wall portion 52b and the central reinforcing wall portion 52d.

An engagement piece 58 is provided on the upper edge of the connecting wall portion 53. The engagement piece 58 protrudes from the left-right center of the connecting wall portion 53 on the opposite side to the reinforcing wall portion 52. When the mesh member 25 is stored in the storage portion 26, the engagement piece 58 faces the outside through the engagement recess 47 provided in the attachment/detachment opening 27. Therefore, the engagement piece 58 also serves as a part for hooking a fingertip when pulling the mesh member 25 out of the attachment/detachment opening 27.

[base]
As shown in Fig. 3, the base 23 is disposed in the component placement recess 31 on the outer surface of the outer wall member 21. The base 23 has a shape following the curved surface of the component placement recess 31. The base 23 has a central opening 33a corresponding to the central opening 33 and an outside air inlet 34a corresponding to the outside air inlet 34. The outer surface of the base 23 has a guide piece 61 extending in the vertical direction. The base 23 also has a guide hole 62 extending in the vertical direction. The guide piece 61 and the guide hole 62 guide the movement of the shutter 24 in the vertical direction. An attachment protrusion 63 is provided on the inner surface of the base 23. The attachment protrusion 63 is inserted into the through hole 38 and fixed to the cap body 10.

[Shutter]
The shutter 24 is placed on the outer surface of the base 23. The shutter 24 has a V-shape. The shutter 24 includes a blocking portion 64 that blocks the pair of left and right

outside air inlets

34, 34a, and an operating portion 65 that connects the pair of blocking portions 64. The portion between the pair of blocking portions 64 in the shutter 24 is a recess that allows the locking member 30 that locks the shield 13 arranged in the

central openings

33, 33a in a blocked state to escape. The inner surface of the shutter 24 includes an engagement piece 66 that engages with the guide hole 62 of the base 23. When the shutter 24 moves downward, the blocking portion 64 opens the

outside air inlets

34, 34a, and when the shutter 24 moves upward, the blocking portion 64 blocks the

outside air inlets

34, 34a.

[Method of attaching and detaching mesh member]
The mesh member 25 configured as described above is easily bent in the left-right direction and in the front-rear direction (thickness direction of the connecting wall portion) because of the provision of the connecting wall portion 53. On the other hand, the mesh member 25 is less likely to bend in the front-rear direction and in the up-down direction because of the provision of the reinforcing wall portion 52. This gives the mesh member 25 sufficient rigidity to be inserted and removed through the attachment/detachment opening 27.

As shown in Figures 8 and 9, the mesh member 25 is attached to and detached from the storage section 26 by moving the shield 13 upward to open the viewing opening 11 and expose the attachment/detachment opening 27 to the outside. When inserting the mesh member 25 into the storage section 26, the mesh member 25 is inserted into the storage section 26 through the attachment/detachment opening 27 with the lower end opposite the engagement claw 54 as the insertion end. The reinforcing wall 52 reinforces the mesh section 51 to facilitate the insertion operation, and also functions as an insertion guide by contacting its edge with the bottom surface 36a of the first storage recess 36, etc. The mesh member 25 is inserted until the lower end of the mesh section 51 approaches the lower wall 41b rising from the bottom surface 41a of the second storage recess 41. At the same time, the engagement claw 54 engages with the open end of the attachment/detachment opening 27, i.e., the upper edge 21a of the outer wall member 21. Or, it engages with the edge of the liner arranged on the upper edge 21a. In FIG. 8, the edge of the liner located at the upper edge 21a is omitted and not shown.

Here, the tips of the restricting

pieces

57a and 57b abut against the

stoppers

46a and 46b, and the restricting

pieces

57c and 57d abut against the

stoppers

46c and 46d. At the same time, the engaging piece 58 of the mesh member 25 engages with the engaging recess 47 provided at the upper end that constitutes the attachment/detachment opening 27. This prevents the mesh member 25 from entering too far into the storage section 26. For example, it is possible to prevent the mesh member 25 from getting caught between the outer wall member 21 and the inner wall member 22.

Also, as shown in FIG. 9, the pressure-contact portion 53a is pressure-contacted to the bottom surface 41a of the second storage recess 41 near the attachment/detachment opening 27. This makes the mesh member 25 less likely to rattle inside the storage section 26, stabilizing its position. Furthermore, the pair of left and right mesh portions 51 are pressure-contacted so that no gaps are formed around the outside air inlet 34 on the bottom surface 41a of the second storage recess 41.

The mesh member 25 can be pulled out of the storage section 26 by pinching the reinforcing wall section 52 and the connecting wall section 53 facing the attachment/detachment opening 27 with fingers or the like and pulling them upward. At this time, the mesh member 25 can be easily pulled out of the storage section 26 by hooking the fingertips on the engagement pieces 58 facing the attachment/detachment opening 27.

[Action]
10, when the defroster 16 is not in use, the shutter 24 moves upward and the blocking portion 64 blocks the

outside air inlets

34, 34a. Therefore, wind pressure does not enter the helmet 1 through the

outside air inlets

34, 34a.

As shown in FIG. 11, when the defroster 16 is started to be used, the shutter 24 is moved downward. This causes the

outside air inlets

34, 34a to be opened from the blocking portion 64. Air is drawn in from the

outside air inlets

34, 34a by wind pressure. The air passes through the mesh portion 51. At this time, foreign matter contained in the air is removed by the mesh portion 51. The air from the front that passes through the mesh portion 51 hits the bottom portion 41a of the second storage recess 41, and then the wind direction changes to an upward direction. The air is rectified by the flow path 55, and is blown onto the inner surface of the shield 13 from the attachment/detachment opening 27, which is an air outlet. This prevents the formation of frost, ice, dew, etc. on the inner surface of the shield 13. The outside air that has flowed into the helmet 1 is then exhausted from the air outlet 20 (see arrow A in FIG. 1).

[Effects of the embodiment]
The above embodiment can provide the following advantages.
(1) Air taken in through the

outside air inlets

34, 34a passes through the mesh portion 51, and is then sent through the attachment/detachment opening 27, which is an air outlet, to the inner surface of the shield 13. Foreign matter contained in the air taken in through the

outside air inlets

34, 34a can be removed by the mesh portion 51, thereby maintaining a good environment inside the helmet 1. The mesh member 25 can be removed from the housing portion 26 for cleaning.

(2) Since the attachment/detachment opening 27 functions as an air outlet, the configuration of the storage section 26 can be simplified.
(3) In the stored state, the mesh portion 51 is pressed against the inner surface of the outer wall member 21, thereby preventing the air taken in from the outside air inlet 34 from flowing toward the attachment/detachment opening 27 through the gap between the inner surface of the outer wall member 21 and the mesh portion 51. In other words, by preventing air that has not passed through the mesh portion 51 from being blown into the inside of the helmet 1 from the attachment/detachment opening 27, it is possible to suppress the intrusion of foreign matter into the inside of the helmet 1 and suppress a decrease in the wearing comfort.

(4) While the mesh portion 51 is reinforced by the reinforcing wall portion 52, the air drawn in from the outside air inlet 34 inside the storage portion 26 is rectified by the flow path 55 and can be blown to the inner surface of the closed shield 13 from the attachment/detachment opening 27.

(5) The connecting wall portion 53 can be reinforced while allowing bending in a direction that makes it easy to insert and remove the mesh member 25 .
(6) The engagement of the engagement claws 54 with the edge of the outer wall member 21 can prevent the mesh member 25 from going too far into the storage portion 26. This makes it difficult for the mesh portion 51 to become misaligned with respect to the outside air inlet 34.

(7) The pressure contact portion 53a is pressed against the bottom surface portion 36a of the first storage recess 36, thereby stabilizing the position of the mesh member 25 stored in the storage portion 26. This makes it difficult for the mesh portion 51 to shift in position relative to the outside air inlet 34.

(8) The tips of the restricting

pieces

57a, 57b, 57c, and 57d abut against the

stoppers

46a, 46b, 46c, and 46d. This prevents the mesh member 25 from entering too far into the storage section 26.

(9) The engagement piece 58 engages with the engagement recess 47 provided at the upper end constituting the attachment/detachment opening 27. This prevents the mesh member 25 from entering too far into the storage section 26. In addition, by hooking a fingertip on the engagement piece 58, the mesh member 25 can be easily pulled out of the storage section 26.

The above embodiment can be further modified as follows.
A configuration may be adopted in which the engagement piece 58 is provided and the engagement recess 47 is omitted. In this case, the engagement piece 58 protrudes upward from the opening end of the attachment/detachment port 27 by an amount corresponding to the thickness of the engagement piece 58. This makes it easier to hook the mesh member 25 with a fingertip when pulling it out of the storage section 26.

Furthermore, the engagement pieces 58 may be omitted. In this case, the mesh member 25 can be pulled out from the storage portion 26 by pinching the upper end of the reinforcing wall portion 52.
The

stoppers

46a, 46b, 46c, and 46d of the storage section 26 may be partially omitted. In this case, the

restriction pieces

57a, 57b, 57c, and 57d at the corresponding positions may be omitted. For example, either the

stoppers

46a, 46b or the

stoppers

46c and 46d may be omitted, and accordingly either the

restriction pieces

57a, 57b or the

restriction pieces

57c and 57d may be omitted. By adopting such a configuration, the configuration of the mesh member 25 and the storage section 26 can be simplified.

- Furthermore, the

stoppers

46a, 46b, 46c, and 46d and the restricting

pieces

57a, 57b, 57c, and 57d may be omitted. In this case, the mesh member 25 can be prevented from shifting from the predetermined position by the lower end of the mesh member 25 being abutted against the lower wall portion 41b that defines the storage section 26.

- The pressure contact portion 53a may be omitted. The position of the mesh member 25 can be stabilized by providing a lid for opening and closing the attachment/detachment opening 27, for example, and the lid can be used to stabilize the position of the mesh member 25 stored in the storage portion 26.

- The engagement claws 54 provided at the tips of the reinforcing wall portions 52 may be omitted, or engagement claws 54 may be provided only on some of the reinforcing wall portions 52. This simplifies the configuration of the mesh member 25.

- The connecting wall portion 53 may be omitted to simplify the configuration of the mesh member 25. Alternatively, the mesh member 25 may be configured to have two separate mesh portions 51, each of which has a connecting wall portion 53. In this case, two storage portions 26 are provided corresponding to the mesh portions 51. This allows the two mesh portions 51 to be removed separately from the storage portions 26, and, for example, only the dirty mesh portion 51 can be removed and cleaned.

- In the mesh member 25, all or part of the reinforcing wall portion 52 may be omitted. For example, if the mesh portion 51 is configured to be less likely to bend, even if all or part of the reinforcing wall portion 52 is omitted, it is possible to prevent a decrease in operability in attaching and detaching the mesh member 25 to the storage portion 26.

The reinforcing wall portion 52 may be a wall having a wavy shape that undulates in the left-right direction instead of a straight wall that extends straight in the vertical direction, and may be provided intermittently in the vertical direction. When the reinforcing wall portion 52 is provided intermittently in the vertical direction, the portion where the reinforcing wall portion 52 is not provided functions as a communication portion that connects adjacent flow paths 55.

The communication portion 56 provided in the reinforcing wall portion 52 may be omitted. Also, instead of the communication portion 56, an insertion hole penetrating the reinforcing wall portion 52 in the thickness direction of the wall portion may be provided.
The mesh portion 51 does not have to be pressed against the inner surface of the outer wall member 21 around the outside air inlet 34. Instead, for example, an elastic body that fills the gap between the mesh portion 51 and the inner surface of the outer wall member 21 may be provided on the inner surface of the outer wall member 21 or on the surface of the mesh portion 51 facing the outer wall member 21. For example, the elastic body may be provided at a position corresponding to the outer periphery of the mesh portion 51, or may be provided so as to surround the outside air inlet 34.

The mesh member 25 may be entirely rigid enough to be unlikely to bend.
The attachment/detachment opening 27 may be provided at a position different from the air outlet, so long as the air outlet for blowing air against the inner surface of the shield 13 faces the inner surface of the shield 13. For example, the air outlet may be provided at the lower edge of the field of view opening 11, and the attachment/detachment opening may be provided at the lower edge of the front lower region 14 (e.g., the edge of the mounting opening 12). In this case, it is preferable that the attachment/detachment opening is closed with a lid member so that air is directed toward the air outlet when the mesh member 25 is housed in the housing portion 26.

- The defroster 16 with the mesh member 25 may be provided on the upper edge or the left and right side edges of the viewing opening 11. In other words, the defroster 16 may be configured to blow air onto the inner surface of the shield 13 from any direction, as long as the air outlet faces the inner surface of the shield 13.

- A finer mesh filter such as nonwoven fabric may be placed in the mesh section 51. This allows finer foreign particles to be captured. For example, hooks or the like may be provided on either side of the mesh section 51, and the filter may be placed in the mesh section 51 by hanging it on the hooks.

- An upper intake may be provided in the helmet body 10 in the front upper region 17 of the field of vision opening 11. This allows outside air to be taken into the helmet body 10 even more easily.

- Helmet 1 is not limited to a full-face type helmet. For example, it may be a flip-up type helmet with a liftable chin section, an open-face type helmet, a helmet with a detachable chin section, or a convertible type helmet with a rotatable chin section that can be fixed to the back of the head.

Claims

A hat body having a viewing opening at the front;
a shield attached to the hat body so as to be capable of opening and closing the field of view opening;
an outside air inflow mechanism configured to blow air against an inner surface of the shield in a closed state that closes the field of view opening;
The outside air inflow mechanism includes a storage section formed inside the cap body, and a mesh member detachably stored in the storage section,
the housing section includes an outer wall member having an outside air inlet connecting the inside and the outside, an inner wall member located opposite the outer wall member, an attachment/detachment port for attaching and detaching the mesh member, and an air outlet for blowing air taken in from the outside air inlet against the inner surface of the shield in the closed state;
The mesh member includes a mesh portion that faces the outside air inlet when the mesh member is housed in the housing portion.
Helmet.
The helmet according to claim 1 , wherein the attachment/detachment opening and the air outlet are the same opening.
The helmet according to claim 1 , wherein the mesh portion is pressed against an inner surface of the outer wall member in the stored state.
The mesh member includes a plurality of reinforcing walls spaced apart from one another,
4. The helmet according to claim 1, wherein each of the reinforcing wall portions is a wall that extends in a first direction, which is a direction of the air outlet, in the stored state, on a surface of the mesh portion that faces the inner wall member.
The helmet according to claim 4 , wherein the mesh member includes a connecting wall portion that connects the plurality of reinforcing wall portions in a second direction intersecting with the first direction.
The helmet according to claim 4 , wherein at least some of the reinforcing wall portions include an engaging claw that engages with an edge portion of the outer wall member that constitutes the mounting/removal opening.
The helmet according to claim 5 , wherein the mesh member includes pressure contact portions at both ends of the connecting wall portion in the second direction that are in pressure contact with the inner wall member in the stored state.
the housing portion includes a stopper that prevents the mesh member from entering the housing portion too far;
The helmet according to claim 1 , wherein the mesh member includes a restricting piece whose tip abuts against the stopper when the mesh member is inserted into the housing portion.