JP7699091B2 - helmet - Google Patents

Description

The present invention relates to a helmet.

Some motorcycle helmets are equipped with an air inlet mechanism that uses wind pressure from an air intake or defroster to bring 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, Patent Document 1 describes a front air intake in which a grill and a filter are interposed between a first frame and a 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 may 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.

The 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 for blowing air against the inner surface of the shield in a closed state in which the field of vision opening is blocked, the outside air inflow mechanism comprising a storage section formed 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 for blowing 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 facing the outside air inlet when stored in the storage section.

According to the above configuration, air taken in through the outside air inlet is sent through the mesh section to the inside surface of the shield from the air outlet. Any foreign matter contained in the air taken in through the outside air inlet can be removed by the mesh section, and the environment inside the helmet can be maintained in a good condition. The mesh member can be removed from the storage section for cleaning.

In the above helmet, the attachment/detachment opening and the air outlet may be the same opening. With the above configuration, one opening has the functions of both the attachment/detachment opening and the air outlet, which simplifies the configuration of the storage section.

In the above helmet, the mesh portion may be configured to be pressed against the inner surface of the outer wall member in the stored state. With the above configuration, it is possible to prevent air taken in from the outside air inlet from flowing through the gap between the inner surface of the outer wall member and the mesh portion toward the air outlet. In other words, by preventing air that has not passed through the mesh portion from being blown into the interior of the helmet from the air outlet, it is possible to suppress the intrusion of foreign matter into the interior of the helmet.

In the above helmet, the mesh member may have a plurality of reinforcing wall sections spaced apart from each other, and each of the reinforcing wall sections may be configured as a wall extending in a first direction, which is the direction of the air outlet, in the stored state on a surface of the mesh section facing the inner wall member. With the above configuration, the mesh section is reinforced by the reinforcing wall sections, while the air drawn in from the outside air inlet in the storage section can be rectified and sent from the air outlet to the inner surface of the shield in a closed state.

In the above helmet, the mesh member may be configured to include a connecting wall portion that connects the multiple reinforcing wall portions in a second direction that intersects with the first direction. With the above configuration, the mesh member can be reinforced by the connecting wall portion.

In the above helmet, at least some of the reinforcing wall sections may be configured to have engaging claws that engage with the edges that form the attachment/detachment opening. This configuration makes it difficult for the mesh member to go too far inside the storage section, causing the mesh section to shift position relative to the outside air inlet.

In the above helmet, the mesh member may be configured to have pressure contact portions at both ends of the connecting wall portion in the second direction that are pressed against the inner wall member in the stored state. With the above configuration, the position of the mesh member stored in the storage portion can be stabilized.

In the above helmet, the storage section may be provided with a stopper that prevents the mesh member from entering too far into the storage section, and the mesh member may be provided with a restricting piece whose tip abuts against the stopper when inserted into the storage section. According to the above configuration, the tip of the restricting piece abuts against the stopper. This prevents the mesh member from entering too far into the storage section.

The above configuration prevents foreign objects from entering through the outside air inlet mechanism, thereby preventing a decrease in fit.

FIG. 1 is a perspective view of a helmet according to an embodiment. FIG. 2 is a perspective view of a main part of the outside air inlet mechanism and its surroundings in the embodiment. FIG. 3 is an exploded perspective view of the outside air inlet mechanism. FIG. 4 is a perspective view of an outer wall member and an inner wall member that form a housing portion that houses a mesh member. FIG. 5 is a cross-sectional perspective view of a housing portion that houses a mesh member. FIG. 6 is a perspective view of the mesh member as viewed from the front. FIG. 7 is a perspective view of the mesh member as viewed from the rear. FIG. 8 is a cross-sectional perspective view showing a state in which the mesh member is housed in the housing portion. FIG. 9 is a cross-sectional perspective view showing the state of the pressure-contact portion. FIG. 10 is a perspective view showing a state in which the outside air inlet is closed by the shutter. FIG. 11 is a perspective view showing a state in which the shutter opens the outside air inlet.

Hereinafter, a helmet to which the present invention is applied will be described with reference to the drawings.
In this embodiment, the directions as seen from the helmet wearer, namely, front, rear, left, right, top, and bottom, 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 located 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 in order 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, and the field of view opening 11 can be opened and closed. The shield 13 moves from a closed state in which the field of view opening 11 is blocked to an open state in which the field of view opening 11 is opened by moving above 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 mounting opening 12 is formed in the lower region of the hat body 10. The mounting opening 12 is an opening for inserting the wearer's head. A pair of left and right chin straps are attached to the mounting 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 cap 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 of the front lower area 14 in the left-right direction. 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 as described above, air is drawn in through the defroster 16 and other parts due to wind pressure while riding. The outside air that has flowed into 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 from the lower end to the upper end of the viewing opening 11 against the inner surface of the closed shield 13. 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. It 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 storage section 26 has an opening at the upper end. This opening serves as an attachment/detachment opening 27 for attaching and detaching the mesh member 25. This attachment/detachment opening 27 faces upward. The attachment/detachment opening 27 is an opening that faces the inner surface of the shield 13 in a closed state, and also serves as 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 constituting a defroster at the upper center in the left-right direction. The outside air inlet 34 is provided with a pair of left and right outside air inlets 34, for example, located 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. The bottom surface 36a of the first storage recess 36 is where the central opening 33 and the pair of left and right outside air inlets 34 are located. The first storage recess 36 is a recess that extends in the left-right direction from the left-right center and 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, below the central opening 33, and below 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 parts of a liner such as a cushion. In addition, between the multiple ribs 37 and the lower opening 32, through holes 38 for attaching the base 23 are formed. The area above the upper ribs 37 becomes the area that constitutes the storage section 26. The mounting protrusions 63 (see Figure 3) of the base 23 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 forms an opening end for forming the attachment/detachment opening 27. The bottom surface portion 41a of the second storage recess 41 is a wall against which the air that flows in from the outside air inlet 34 and passes through the mesh member 25 hits, changing the flow direction toward the opening end for forming the attachment/detachment opening 27. The bottom surface portion 41a has a lower wall portion 41b that rises up from the bottom surface portion 41a below the opposite opening end. The lower wall portion 41b is a wall that forms the storage section 26, and is the wall portion against which the lower end of the mesh member 25 abuts.

The bottom surface 41a has a groove 42 extending in the left-right direction. The groove 42 is an attachment groove for attaching an interior part of the helmet 1. The bottom surface 41a of the second housing recess 41 has a protrusion 43 at approximately 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 lower protrusion 44 extending downward from the center in the left-right direction. The lower protrusion 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 together by fixing members such as screws at the mounting bosses 45 and the mounting holes 39. 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 the storage section 26 too far when the mesh member 25 is stored in the storage section 26 from 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 provided upright on the bottom surface portion 41a and are abutment pieces against which the tips of the restricting 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 constituting 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, the upper end constituting the attachment/detachment opening 27 is provided with an engagement recess 47. As an example, the engagement recess 47 is provided in 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. 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. The size of each square (hole) is a hole of several millimeters. Each square is large enough to trap small insects. 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. In each reinforcing wall portion 52, the base end is fixed to the mesh portion 51, and the tip 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 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 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 ends of the mesh parts 51. The upper end of the outer end reinforcing wall 52a is located above the upper end of the mesh part 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 part 51. Each engaging claw 54 engages with the upper edge 21a of the outer wall member 21 when the mesh member 25 is accommodated in the accommodation part 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 arranged, 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 reinforcing wall portion 52 is crossed by a connecting wall portion 53. That is, the connecting wall portion 53 is a strip-shaped portion that connects the upper ends of the reinforcing wall portions 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 53 extend to the upper end of the outer end reinforcement wall 52a. Specifically, the connecting wall 53 has a constant width at the inner end reinforcement wall 52b and the inner reinforcement wall 52c, but widens downward from the inner reinforcement wall 52c closest to the outer end reinforcement wall 52a to the outer end reinforcement wall 52a, and this widening portion forms the pressure contact portion 53a. The connecting wall 53 is curved to follow the bottom surface 41a of the second storage recess 41 at the inner reinforcement wall 52c, and is slightly curved in the opposite direction at the pressure contact portion 53a, which is the outer end reinforcement wall 52a. When the pressure contact portion 53a is accommodated in the accommodation portion, 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 lower end of the central reinforcing wall 52d does not protrude below the connecting wall 53, and also has an engaging claw 54. The portion connecting one mesh portion 51 to the other mesh portion 51 does not have a mesh portion 51, and instead has a recess that allows parts placed in the central opening 33 to escape.

The lower edge of the connecting wall portion 53 is further provided with restricting pieces 57a, 57b, 57c, and 57d. The restricting pieces 57a and 57b are portions that form the pressure contact portion 53a, and are both end restricting pieces that extend downward from the lower edge of the connecting wall portion 53. The 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 engages with the upper edge of the connecting wall portion 53. The engagement piece 58 is in the left-right center of the connecting wall portion 53, and protrudes 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 an engagement recess 47 provided in the attachment/detachment opening 27. Therefore, the engagement piece 58 also serves as a portion 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 shutter 24 has a recess between the pair of blocking portions 64 to allow escape of the locking member 30 that locks the shield 13 arranged in the central openings 33, 33a in a blocked state. 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, it is difficult to bend in the front-rear direction and in the up-down direction because of the provision of the reinforcing wall portion 52. This allows the mesh member 25 to be inserted and removed through the attachment/detachment opening 27 and has rigidity.

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 constituting 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.

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.

[Effect]
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 cause air to 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 blocking portion 64 to open the outside air inlets 34, 34a. 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-described embodiment can provide the following advantages.
(1) Air taken in through the outside air inlets 34, 34a is sent through the mesh portion 51 to the inner surface of the shield 13 from the attachment/detachment opening 27, which is an air outlet. 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 in the storage portion 26 can be rectified by the flow path 55 and sent 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 engaging claws 54 prevent the mesh member 25 from going too far into the accommodation portion 26 and causing the mesh portion 51 to become misaligned relative 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.
The engaging piece 58 may be provided and the engaging recess 47 may be omitted. In this case, the engaging piece 58 protrudes upward from the opening end of the attachment/detachment port 27 by the thickness of the engaging 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 piece 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 members 51 may be configured to be separated into two, with each mesh member 51 having a connecting wall portion 53. In this case, two storage portions 26 are provided corresponding to the mesh members 51. This allows the two mesh members 51 to be removed separately from the storage portions 26, and, for example, allows only the soiled mesh member 51 to 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, rather than 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 have sufficient rigidity so that the entire mesh member 25 is 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 equipped 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, a hook 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 hook.

- An upper intake may be provided in the upper front region 17 of the field of view opening 11 in the cap body 10. This allows outside air to be taken into the inside of the cap 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.

11: Field of view opening 13: Shield 14: Front lower region 16: Defroster 20: Air outlet 21: Outer wall member 21a: Upper edge portion 22: Inner wall member 23: Base 24: Shutter 25: Mesh member 26: Storage portion 27: Attachment/detachment opening 31: Component placement recess 33: Central opening 34: Outside air inlet 34a: Outside air inlet 36: First storage recess 36a: Bottom portion 37: Rib 39: Mounting hole 41: Second storage recess 41a: Bottom portion 41b: Lower wall portion 42: Groove portion 43: Projection 44: Lower projecting piece 46a to 46d: Stopper 51: Mesh portion 52: Reinforcing wall portion 52a: Outer end reinforcing wall portion 52b: Inner end reinforcing wall portion 52c: Inner reinforcing wall portion 52d: central reinforcing wall portion 53: connecting wall portion 53a: pressure contact portion 54: engaging claw 55: flow path 56: communication portion 57a to 57d: restriction piece 61: guide piece 62: guide hole 64: blocking portion 65: operation portion 66: engaging piece

Claims (7)

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 that blows air against an inner surface of the shield that is in a closed state in which the field of view opening is closed;
The outside air inflow mechanism includes a storage section formed inside the hat 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 opening for attaching and detaching the mesh member, and an air outlet for blowing air taken in from the outside air inlet against an 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 ,
The attachment/detachment opening and the air blowing opening are the same opening .
helmet. 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,
The helmet according to claim 1 or 2 , wherein each of the reinforcing walls 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 3 , 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 3 , wherein at least some of the reinforcing wall portions are provided with an engaging claw that engages with an edge portion that constitutes the mounting/removal opening. The helmet according to claim 4 , wherein the mesh member includes pressure contact portions that are in pressure contact with the inner wall member at both ends of the connecting wall portion in the second direction 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 or 2 , wherein the mesh member includes a restricting piece, the tip of which abuts against the stopper when the mesh member is inserted into the housing portion.

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