JP2018150661A - Blower built-in helmet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blower built-in helmet capable of improving both strength of a cap body and blowing efficiency.SOLUTION: A helmet 1 includes: a cap body 2 having an opening 22 at a rear upper part thereof; a shock absorbing liner 3; and a blower 4 disposed in an opening 22 and freely rotatable in forward and reverse directions, the liner 3 including a downwardly opening recess 6 on the inner surface thereof, and the recess 6 having a first recess 61 which passes under a top of the cap body 2 and is long in front and rear, with the rear end thereof facing the opening 22, and a second recess 62 located in the vicinity of the top of the cap body 2 and communicating with the first recess 61 and opened at right and left.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a helmet provided with a blower.

  Conventionally, as shown in Patent Document 1, an air-cooled helmet in which an air suction port and a blower fan are provided at the top of the helmet is known. Moreover, as shown in Patent Document 2, a blower-equipped helmet is known in which an overhang portion is formed on the rear head side of the helmet, and an air supply path and a motor unit with a fan are provided inside the overhang portion.

Japanese Patent No. 4478134 Utility Model Registration No. 3152441

  According to the Ministry of Health, Labor and Welfare's “Protective Cap Standard”, the strength of the top of a protective cap is defined. Helmets with a blower on the top of the head (the top of the cap body) have an opening at the top of the cap body for mounting the fan or for ventilation. This causes an increase in weight and an increase in manufacturing cost. Furthermore, since the blower is located at the top of the cap body, the wind from the blower hits the apex plate of the hammock that is in contact with the wearer's head, making it difficult for the wind to hit the wearer's head and improving the blowing efficiency. It's hard to say.

  In the case where a blower is provided on the back of the head and the wind is supplied upward, it is easy to obtain suitable strength, but it is difficult to supply wind to the wearer's forehead and it is difficult to say that the blowing efficiency is good.

  Accordingly, it is an object of the present invention to provide a blower-equipped helmet that can improve both the strength of the cap body and the air blowing efficiency, which are disadvantages of the prior art.

  In view of the above problems, the helmet with a built-in blower of the present invention has a substantially hemispherical cap body having an opening at the rear upper portion, a shock absorbing liner attached to the cap body, and forward / reverse rotation disposed in the opening. And a liner having a recess on its inner surface, the recess passing through the lower part of the top of the cap body in the front and rear direction, and a first recess whose rear end faces the opening; And a second recess that is located below the top of the cap body and communicates with the first recess and opens to the left and right.

  In addition to the above-described configuration, the cover further includes a cover that covers the opening of the cap body and the blower, and the cover is disposed with a gap serving as a flow path between the opening of the cap body and left and right. A lateral opening that is open and a rear opening that is wider and wider than the lateral opening; the lateral opening is located on the left and right outside of the opening of the cap body, and the rear opening is rearward of the opening of the cap body. Preferably it is located.

  According to the present invention, the blower and the opening are installed while being shifted rearward from the top of the cap body, so that the strength reduction of the top due to the installation of the blower or the like can be reduced. In the present invention, the inner side of the top portion of the cap body can be protected by the liner by shifting the blower or the like to the rear upper part of the cap body. By these, this invention can ensure the intensity | strength of a cap body, and can make it easy to adapt to the "standard of a protective cap" which Ministry of Health, Labor and Welfare establishes.

  Furthermore, this invention can supply / exhaust air from the back with respect to a wearer's top part by providing the air blower in the back upper part of the cap body. The present invention can improve both the front and rear flow efficiency and the right and left flow efficiency of the air in the cap body by providing the liner with a first recess in the front-rear direction and a second recess in the left-right direction. By these, this invention can make it difficult to influence the top plate etc. of a hammock on supply / exhaust, and can improve ventilation efficiency.

  The helmet can reduce strength reduction due to the opening by covering the opening with a cover. Further, the helmet covers the opening with a cover, and the cover has an opening behind the opening, thereby suppressing the inflow of water droplets such as rain into the cap body.

  The helmet has a lateral opening and a rear opening provided in the cover, thereby reducing a reduction in blowing efficiency due to the cover. Since the helmet has a wider rear opening than a lateral opening, air can easily flow back and forth through the opening. Thereby, the helmet can easily supply and exhaust air between the front end side in the cap body and the opening.

It is a perspective view showing an example of a fan built-in helmet concerning an embodiment of the present invention. It is a disassembled perspective view of the helmet of FIG. It is a rear view of the helmet of FIG. It is a bottom view of the helmet of FIG. FIG. 2 is a cross-sectional view taken along line A-A ′ of the helmet of FIG. 1.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the description of the present embodiment, the direction in which the helmet 9 of the helmet 1 is present is the front, and the direction in which the power supply unit 41 is present is the rear. Moreover, the surface which a user wears is made into an inner surface, and the outer side of the helmet 1 is demonstrated as an outer surface.

  As shown in FIG. 1, the helmet 1 protects the head of the wearer with a hemispherical cap body 2 and a heel 9 protruding from the front end of the cap body 2.

  The cap body 2 has a convex portion 21 that protrudes upward, and the convex portion 21 is elongated in the front and rear direction from the top to the front end of the cap body 2 (the base end of the flange 9) from the rear to the top. The front part of the convex part 21 has a fan shape that spreads to the left and right. The helmet 1 has a shape that receives the impact of a fallen object or the like from above on the convex portion 21.

  As shown in FIG. 2, the cap body 2 has a cover fixing region 23 (hereinafter, referred to as a fixing region 23) provided with a fixing portion 25 for the cover 5 at the upper rear side. The fixed region 23 is a substantially rectangular region that is long in the front-rear direction, and the left-right width thereof is substantially the same as the left-right width of the convex portion 21. The fixing portions 25 are respectively provided at the four corners of the fixing region 23, and the cover 5 can be fixed from the inner surface side using screws or the like.

  An opening 22 having a hole at the center is formed at a position from the front of the left and right center inside the fixing portion 25 of the fixing region 23 and serving as a region for fixing the blower 4. For this reason, the opening part 22 is located in the back on an extension line from the rear end of the convex part 21. FIG. The opening 22 is formed in a quadrangular shape so as to be recessed from the outer surface of the cap body 2, and the lateral width thereof is smaller than the lateral width of the convex portion 21. Furthermore, the left and right peripheral edges of the opening 22 are provided with wall portions 24 protruding upward. In addition, a fixing portion 26 that contacts the blower 4 is provided at the lower end of the opening 22. In other words, the cap body 2 has an installation recess at the upper part thereof, and a vent and a fixing part 26 for the blower 4 are provided at the bottom of the installation recess.

  The blower 4 is disposed in the opening 22. Specifically, when fixing the cover 5, the fixing portion 26 protruding from the opening 22 is inserted into the blower 4 and fixed so as to be sandwiched by the cover 5. The blower 4 is arranged in an inclined posture (forward inclined posture) in which the upper end is positioned forward of the lower end along the inclination of the cap body 2 (opening surface of the opening 22). For example, the blower 4 is disposed so as to be inclined forward and downward so as to face the top of the wearer's head.

  The blower 4 is freely reversible forward and backward, and is capable of blowing air. By switching the rotation direction of the blower 4, supply air to supply the outside air into the cap body 2 through the opening 22, and the cap body through the opening 22. 2 is switched to the exhaust for discharging the air in the cap body 2 (inside air). The blower 4 has a rectangular outer shell, and the four sides of the outer shell are approximately the same size as the four sides of the opening 22. As shown in FIG. 3, the blower 4 is supplied with power from a power supply unit 41 provided in the lower rear portion of the cap body 2. The blower 4 is covered with a cover 5 from above.

  The cover 5 includes an upper surface plate 51 that covers the blower 4 and side walls 52 that protrude downward from both left and right ends of the upper surface plate 51. The upper surface plate 51 covers the fixed region 23 including the opening 22 (blower 4). The cover 5 is fixed to the outer surface of the cap body 2 so that the upper end (front end) of the upper surface of the upper surface plate 51 is continuous with the rear end of the upper surface of the convex portion 21 and the lower end of the side wall 52 is in contact with the outer peripheral end of the fixing region 23. Is done. The cover 5 is fixed to the fixing portion 25 by, for example, a screw inserted from the inside of the cap body 2.

  Further, the upper surface plate 51 is inclined forward with respect to the blower 4 so that the vertical distance from the blower 4 (opening 22) becomes wider toward the rear. The side wall 52 is inclined to the left and right outside as it goes downward. Furthermore, the side wall 52 has a shape in which the rear side is inclined rearward and downward.

  The cover 5 further includes ribs 53 (see FIG. 5) that protrude from the lower surface of the upper surface plate 51 toward the four corners of the blower 4. The blower 4 is sandwiched and fixed between the cap body 2 and the cover 5 while being pressed against the fixing portion 26 by the ribs 53.

  The cover 5 further has a plurality of lateral openings 7 on both the left and right sides, and a rear opening 8 wider than the lateral openings 7 and vacant on the rear side. The lateral opening 7 and the rear opening 8 have a flow path between the top plate 51 and the blower 4, and the inside of the cap body 2 (the inner space surrounded by the cap body 2) via the blower 4 (opening 22). Communicate.

  The lateral opening 7 is provided in the side wall 52. For this reason, the horizontal opening 7 has a shape that is inclined so that its upper end is positioned inwardly from the lower end to the left and right. The upper end of the lateral opening 7 is located on the left and right outside of the wall portion 24. Three lateral openings 7 are provided, for example, side by side on the left and right sides, and the rear openings are wider.

  The upper end of the rear opening 8 is located behind the opening 22. The rear opening 8 is surrounded by the rear end of the upper surface plate 51 and the inclined rear end of the side wall 52. For this reason, the rear opening 8 has a shape in which the upper end is inclined forward from the lower end.

  Since the cover 5 covers the fixed region 23 wider than the opening 22, the helmet 1 can suppress water drops such as rain flying on the upper surface of the cover 5 from flowing into the cap body 2 through the opening 22. Furthermore, even if a water droplet flows into the fixed region 23 from the lateral opening 7, the helmet 1 can suppress the inflow into the opening portion 22 by the wall portion 24.

  The cover 5 has the lateral opening 7 and the rear opening 8, and the rear opening 8 is widened, so that it is difficult to prevent supply and exhaust of the blower 4. Since the cover 5 is provided with the upper surface plate 51 inclined forward from the opening 22, it is possible to easily supply and exhaust air to the opening 22 via the rear opening 8.

  As shown in FIG. 4, the helmet 1 is brought into contact with the wearer's head so as to be detachable from the cap body 2, an operation unit 42 for operating the rotation of the blower 4, a liner 3 mounted in the cap body 2. A hammock (not shown).

  The operation unit 42 is provided in the lower rear part of the cap body 2. The operation unit 42 is operated by the wearer to switch, for example, the rotation direction (forward / reverse rotation) of the blower 4 and the power supply / stop of the blower 4. The operation unit 42 is, for example, a switch that can be slid up and down, and the blower 4 rotates forward at the lower position, the blower 4 reverses at the upper position, and the blower 4 stops at the central position. In addition, although the helmet 1 is further provided with the control part which controls the air blower 4 according to operation of the operation part 42, it is not illustrated in particular.

  The liner 3 is for shock absorption. The liner 3 has a top surface along the inner surface of the cap body 2 and is disposed in the cap body 2 in contact with the inner surface of the cap body 2. The liner 3 is made of, for example, a foamed synthetic resin material. The liner 3 is detachable from the cap body 2, for example.

  The liner 3 includes a recess 6 opened downward on the inner surface (lower surface) thereof. The recess 6 functions as a flow path that facilitates the flow of air when the blower 4 rotates. More specifically, the recess 6 makes it easy to diffuse air over a wide range of the wearer's head, for example, when supplying air, or facilitates the flow of air over a wide range of the wearer's head into the opening 22 during exhaust.

  The recess 6 includes a first recess 61 that is located below the protrusion 21 and is long in the front-rear direction, and a second recess that is positioned around the top of the cap body 2 and communicates with the first recess 61 and opens to the left and right. 62.

  The first recess 61 has a shape in which the rear opening (rear end) faces the opening 22, the front end is located at the upper front of the cap body 2 or below the cap body 2, and the lateral width increases toward the front. The first recess 61 functions as a flow path that facilitates the flow of air in the front-rear direction in the cap body 2.

  For this reason, the helmet 1 can send wind to the wearer's head front side, for example by flowing the air from the air blower 4 to the front end side of the cap body 2 through the 1st recess 61 at the time of air supply. Furthermore, air at the front side of the wearer's head can be discharged by flowing air in front of the cap body 2 through the first recess 61 during exhaust.

  The second recess 62 functions as a flow path that facilitates the flow of air in the left-right direction between the periphery of the top and the end of the cap body 2 in the cap body 2. That is, the second recess 62 makes it easy for air to flow toward the end of the cap body 2 when supplying air, and makes it easier for air on the side of the cap body 2 to flow into the opening 22 during exhaust.

  For this reason, the helmet 1 can send wind to the wearer's temporal side by, for example, flowing air from the blower 4 to the side of the cap body 2 through the second recess 62 when supplying air. At the time of exhausting, the air on the side of the cap body 2 can be exhausted through the second recess 62 to discharge the air on the side of the wearer's temporal region.

  A first protrusion 71 and a second protrusion 72 that are relatively convex with respect to the first recess 61 and the second recess 62 of the liner 3 are formed. The 1st convex part 71 is located back rather than the top part (2nd recessed part 62) of the cap body 2, and is located in the both sides of the opening part 22 which arrange | positions the air blower 4. FIG. The second convex portion 72 is located in front of the top portion (second concave portion 62) and is located on both sides of the first concave portion 61. The protrusion height (thickness) of the first protrusion 71 is higher than the protrusion height (thickness) of the second protrusion 72, and is formed to have a predetermined thickness, facilitating inflow and discharge through the blower 4. ing.

  The liner 3 has openings 31 on the left and right outer sides of the second recess 62, and the left and right openings 31 are longer in the front-rear direction than the front-rear width of the second recess 62. The inner surface of the cap body 2 is exposed at the left and right positions through the left and right openings 31. Although the second recess 62 is formed shorter than the first recess 61, the opening 31 is formed at the tip of the second recess 62, so that the air flow path passing through the second recess 62 is reduced. Can be secured. In addition, the air trapped in the cap body 2 can be easily discharged.

  Thus, the helmet 1 can reduce the strength reduction of the top part by installation of the air blower 4 etc. by installing the air blower 4 and the opening part 22 by shifting back from the top part of the cap body 2. The helmet 1 can protect the inner side of the top of the cap body 2 with the liner 3 by shifting the blower 4 and the like to the upper rear part of the cap body 2. Accordingly, the helmet 1 can easily conform the strength of the cap body 2 to the “protection cap standard” defined by the Ministry of Health, Labor and Welfare.

  The helmet 1 can reduce the strength reduction due to the opening 22 by covering the opening 22 with the cover 5. The helmet 1 can function the cover 5 as a part of the convex portion 21 by providing the upper surface plate 51 flush with the convex portion 21. Thereby, the helmet 1 can make it easy to ensure the strength of the cap body 2.

  Moreover, the helmet 1 can supply and exhaust air from the rear to the top of the wearer by providing the blower 4 at the upper rear of the cap body 2. In the helmet 1, the first recess 61 and the second recess 62 are provided in the liner 3, so that it is possible to improve both the front-rear and left-right flow efficiencies of the air in the cap body 2. As a result, the helmet 1 can hardly affect the apex plate of the hammock or the like on supply and exhaust, and can improve the air blowing efficiency.

  Since the helmet 1 is provided with the lateral opening 7 and the rear opening 8 in the cover 5, it is possible to reduce a decrease in the blowing efficiency due to the cover 5. Since the helmet 1 has the rear opening 8 wider than the lateral opening 7, the air through the opening 22 can easily flow back and forth. As a result, the helmet 1 can easily supply and exhaust air between the front end side in the cap body 2 and the opening 22. Moreover, the helmet 1 can reduce the flow velocity reduction of the air at the side end side away from the blower 4 by narrowing the front-rear width of the second recess 62 toward the left and right outwards.

DESCRIPTION OF SYMBOLS 1 ... Helmet, 2 ... Cap body, 3 ... Liner, 4 ... Blower, 5 ... Cover, 6 ... Recess, 7 ... Lateral opening, 8 ... Rear opening, 22 ... Opening part, 51 ... Top plate, 52 ... Side wall, 61 ... first recess, 62 ... second recess

Claims (2)

A substantially hemispherical cap body having an opening at the rear upper part, a shock absorbing liner attached to the cap body, and a fan for air reversible arranged in the opening,
The liner has a recess on its inner surface;
The recess has a first recess that passes through the lower part of the top of the cap body and has a long rear end facing the opening, and is located below the top periphery of the cap body and communicates with the first recess. A blower-embedded helmet, comprising: a second recess opening in the fan. A cover for covering the opening of the cap body and the blower;
The cover is arranged with a gap serving as a flow path between the opening of the cap body, and has a lateral opening that opens to the left and right, and a rear opening that opens wider than the lateral opening to the rear. And
The lateral opening is located on the left and right outside of the opening of the cap body;
The blower-equipped helmet according to claim 1, wherein the rear opening is located behind the opening of the cap body.

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