JPH0634336Y2 - Outside air inlet opening / closing device for helmet - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Field of Industrial Use The present invention relates to an outside air introduction hole in a helmet in which a plurality of outside air introduction holes formed in a cap body can be opened and closed at any time. Regarding switchgear.

(2) Conventional Technology Conventionally, in a helmet for a passenger such as a motorcycle, a plurality of outside air introduction holes are formed in a front wall of the cap body for ventilation inside the hat body, and these outside air introduction holes are individually provided with valve plates. It is known to open and close at any time.

(3) Problems to be Solved by the Invention By the way, if a plurality of outside air introduction holes can be opened and closed by a common single valve element, it is convenient because the operation can be speeded up. Therefore, in order to do so, a common single valve plate that can open and close a plurality of outside air introduction holes formed in the cap body is provided in the valve chamber defined by the cap body and the cover that faces the cap body. Although a structure for housing is conceivable, in such a structure, if there are variations in the intervals and hole diameters of the plurality of outside air introduction holes due to processing errors, it becomes difficult to open and close them reliably with a common valve body.

The present invention has been made in view of such circumstances, and even if there are some processing errors in the plurality of outside air introduction holes, they can be reliably opened and closed by a common valve body. An object is to provide an introduction hole opening / closing device.

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides the outside air introducing hole on the back surface of a substrate joined to the outer surface of a cap body having a plurality of outside air introducing holes. A plurality of cylindrical portions each having a hollow portion as a valve hole, and integrally formed on the surface of the substrate with a guide protrusion that crosses between the adjacent valve holes. A positioning engaging portion integrally provided on the back surface of the cover for covering the upper and lower edges of the base plate is fitted, and the cover is fixed to the cap body so that the valve plate is housed between the cover and the base plate. The valve chamber is defined by a concave groove on the back surface of the central portion of the valve plate that slidably engages with the guide projection, and an operating protrusion is formed on the surface of the central portion. , On both sides of its central part,
Opening and closing plate portions that open and close the valve hole by the sliding of the recessed groove are respectively provided in series, and the cover has a ventilation window corresponding to the valve hole and an operation window that exposes the protrusion to the outside. It is characterized by being drilled.

(2) Operation According to the above configuration, even if there are processing errors in the intervals or hole diameters of the plurality of outside air introducing holes formed in the cap body, the errors are fitted to the cap body and the plurality of outside air introducing holes, respectively. Is absorbed between the substrate provided with the plurality of tubular portions. In addition, since the valve plate is guided by the guide protrusions of the substrate in the valve chamber, and the cover is also positioned with respect to the substrate by fitting the upper and lower edges of the substrate and the positioning engaging portions of the cover, the valve plate and the Since the cover can be positioned with respect to the common substrate with a valve hole, the accumulation of the assembly error of each member to the valve hole is suppressed as much as possible, and the relational position among the valve hole, the valve plate and the cover is accurate. Stipulated.

Further, in particular, the valve plate has a concave groove on the back surface, the central portion of which is slidably engaged with the guide protrusion of the base plate, and on both sides thereof,
Since it has an opening / closing plate portion that opens and closes the valve hole, a labyrinth-shaped slit bent in a U-shape is formed between the valve plate central portion and the substrate. Therefore, even if a relatively large gap is created between one of the opening / closing plates and the substrate due to the lift of the valve plate, the traveling wind that has entered the gap causes the other opening / closing plate to be separated from the substrate. It is possible to effectively prevent the passage toward the other valve hole side through the gap by the labyrinth-shaped slit. Moreover, since the operating protrusion is formed on the front side of the central portion of the valve plate having the recessed groove on the back surface, the protrusion itself can be extended outward by the depth of the recessed groove.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, referring to FIGS. 1 and 2, the hat body 2 of the helmet 1 is shown.
Is formed into a full-face type having a covering jaw portion 2a that covers the wearer M's jaw just below the front window hole 3. In this cap body 2,
A transparent shield plate 4 is pivotally supported at both ends thereof so as to be able to move up and down so as to open and close the window hole 3.

The cap body 2 is provided with a pair of left and right outside air introduction holes 6 and an outside air introduction hole opening / closing device 7 for opening and closing the outside air introduction holes 6, 6 just above the window hole 3.

In FIG. 3, the cap body 2 has a shell 10 made of fiber reinforced synthetic resin and a shock absorbing liner 11 made of foamed polystyrene lined in the shell 10 as main components, and the ceiling of the shock absorbing liner 11 is made. A flexible urethane foam top pad 12 is adhered to the inner surface of the shock absorbing liner 11, and a soft urethane foam fit pad 13 is also provided on the inner peripheral surface of the shock absorbing liner 11 except the ceiling surface. The inner surface of the fit pad 13 is sewn with a highly breathable lining 14, for example a pile lining, the outer end of which is sandwiched between the shell 10 and the shock absorbing liner 11.

In FIG. 3 and FIG. 4, the outside air introduction holes 7, 7 penetrate the shell 10 and the impact absorbing liner 11, and the fit pad 13 has a pair at a location corresponding to these outside air introduction holes 7, 7. Through holes 15, 15 are provided. The inner opening ends of these through holes 15, 15 are covered with the lining 14.

Further, on the inner surface of the top pad 12, a plurality of ventilation grooves 16 extending in the front-back direction of the cap body 2 are recessed.

Further, a pair of air discharge holes 17, 17 penetrating the shell 10 and the impact absorbing liner 11 are formed on both side walls of the cap body 2 toward the rear.

Now, the outside air introduction hole opening / closing device 7 will be described with reference to FIGS.

A trapezoidal recess 20 is formed in the center of the front surface of the shell 10 where the outside air introduction holes 6 and 6 are opened, and a substrate is formed on the bottom surface of the recess 20.
21 is glued. The outside air introduction hole is formed on the back surface of the substrate 21.
A pair of tubular portions 22, 22 that relatively loosely fit into the 6, 6 are integrally provided so as to project, and central portions of these tubular portions 22, 22 serve as valve holes 23, 23.
Further, on the surface of the base plate 21, a guide rail 24 as a guide protrusion extending vertically so as to cross between the left and right valve holes 23, 23 is integrally provided.

A cover 25 that covers the substrate 21 is adhered to the peripheral edge of the recess 20, and a valve chamber 26 is defined between the cover 25 and the substrate 21. The cover 25 has a pair of ventilation windows 27, 27 facing the outside air introduction holes 6, 6 and an operation window 28 running vertically between the windows 27, 27.

A single valve plate 29 is housed in the valve chamber 26. This valve plate 29
A concave groove 30 slidably engaged with the guide rail 24 is formed on the back surface of the central portion 29b of the central portion 29b.
A finger contact protrusion 31 is formed on the surface of b, and the protrusion 31 is exposed outside the cap body through the operation window 28. Further, on both sides of the central portion 29b, opening / closing plate portions 29a, 29a for opening and closing the pair of valve holes 23, 23 by the sliding of the recessed groove 30 are integrally connected. Therefore, by sliding the valve plate 29 up and down along the guide rail 24 via the protrusion 31, the pair of valve holes 23, 23 can be opened and closed at once by the opening / closing plate portions 29a, 29a. it can.

Thus, because the finger contacting protrusion 31 is formed on the front side of the central portion 29b of the valve plate 29 having the recessed groove 30 on the back surface, the protrusion 31 itself is removed by the depth of the recessed groove 30. It becomes possible to project it toward one side for a long time. This makes it possible to maximize the amount of protrusion of the protrusion 31 to the outside of the cap body while reducing the size of the protrusion 31 itself.

On the surface of the valve plate 29, a pair of left and right small protrusions 32, 32 are provided.
On the other hand, two pairs of notches 33, 33; 34, 34 are formed on the back surface of the cover 25 so as to sandwich the operation window 28.
When the valve plate 29 closes the valve holes 23, 23, the small projections 32, 32 engage with the upper notches 33, 33 to maintain the closed state, and the valve plate 29 causes the valve hole 23, 23 to remain closed. Lower notch 3 when opening 23
The open state is maintained by engaging with 4,34.

Further, on the back surface of the cover 25, ribs 35, 36 are provided so as to project on the upper side and the lower side of the valve plate 29, respectively. These ribs 35,36
In addition to the function as a positioning engagement portion that fits the upper and lower edges of the base plate 21 so as to sandwich them, the upper and lower edges of the valve plate 29 are abutted, in addition to the function as a positioning engagement portion that defines the upper and lower positions of the cover 25. Has a function of restricting the opening / closing position of the valve plate 29, and a function of abutting the tip of the valve plate 29 on the bottom surface of the recess 20 to define the depth of the valve chamber 26.

Next, the operation of this embodiment will be described.

When assembling the outside air introduction hole opening / closing device 7 to the cap body 2,
First, the cylindrical portions 22, 22 of the substrate 21 are fitted into the outside air introducing holes 6, 6 of the cap body 2, and the substrate 21 is adhered to the bottom surface of the recess 20 with an adhesive. Next, with the groove 30 engaged with the guide rail 24, the board
Put the valve plate 29 on 21 and then put the finger rest 31 on the operating window 28.
The cover 25 is adhered to the peripheral edge of the recess 20 with an adhesive in a state that the upper and lower ribs 35 and 36 are engaged with the upper and lower side edges of the substrate 21. This completes the assembly.

By the way, even if there is a processing error in the interval or hole diameter of the pair of outside air introducing holes 6,6, since the cylindrical portions 22,22 of the substrate 21 are loosely fitted in the outside air introducing holes 6,6, the above processing error is Hat body 2 and substrate 21
Is absorbed in between. Moreover, the substrate 21, the valve plate 29 and the cover 25
Of the guide rail 24 integrated with the base plate 21 and the concave groove 30 on the valve plate 29 side, and as a positioning fitting part integrated with the upper and lower edges of the base plate 21 and the cover 25. Rib 3
By engaging with 5, 36, the valve plate 29 and the cover 25 can be positioned with respect to the common substrate 21 with the valve hole 23, and the assembly error of the respective members 21, 25, 29 with respect to the valve hole 23 is accumulated. The position of the valve hole 23, the valve plate 29, and the cover 25 relative to each other can be accurately defined. Therefore, if you put your fingertip on the finger rest 31 and slide the valve plate 29 up and down,
The pair of valve holes 23, 23, that is, the outside air introducing holes 6, 6 can be reliably opened and closed at once.

Helmet 1 equipped with such an outside air introduction hole opening / closing device 7
If the operator M wearing the vehicle lowers the valve plate 29 and opens the valve holes 23, 23 while the motorcycle is in operation, the traveling wind can blow the ventilation windows 27, 27.
From the outside air introduction holes 6, 6 to the fitting pad 13 through hole 1
After passing through 5,15 while being dispersed by the breathable lining 14, it flows upwards along the forehead of the operator M, backwards along the ventilation groove 16 of the top pad 12, and the air exhaust holes. It is discharged to the rear of the cap body 2 via 17. In this way, the inside of the cap body 2 is ventilated.

By the way, the valve plate 29 has a central portion 29b having a concave groove 30 slidably engaged with the guide rail 24 of the base plate 21 on its back surface, and opening and closing plates for opening and closing the valve holes 23, 23 on both sides thereof. Part 29
Since it has a and 29a, the valve plate central portion 29b and the substrate
It is possible to form a labyrinth-shaped slit, which is bent in a U-shape when viewed from above, between and 21. Therefore, even if the valve plate 29 floats up and a relatively large gap is created between the one opening / closing plate portion 29a and the substrate 21, the traveling wind that has entered the gap causes the other opening / closing plate. It is possible to effectively prevent the passage toward the other valve hole 23 side through the portion between the portion 29a and the base plate 21 by the maze-like slit, so that the air in the cap body due to the lifting of the valve plate 29. The amount of intrusion is suppressed as much as possible.

C. Effect of the Invention As described above, according to the present invention, even if there are some processing errors in the intervals and hole diameters of the plurality of outside air introduction holes formed in the cap body,
Those errors can be absorbed between the cap body and the substrate. In addition, the valve plate is slidably guided by the guide projections of the board in the valve chamber, and the cover is also positioned with respect to the board by fitting the upper and lower edges of the board and the positioning engaging portions of the cover. Since the body and cover can be positioned relative to the common valve-hole board, the accumulation of assembly errors for each member to the valve hole can be suppressed as much as possible, and the valve hole, valve plate, and cover can be positioned relative to each other. Can be specified with high accuracy,
As a result, the common valve plate can always open and close the plurality of outside air introduction holes accurately, which can greatly contribute to the improvement of operability.

Further, in particular, the valve plate has a concave groove on the back surface, the central portion of which is slidably engaged with the guide protrusion of the base plate, and on both sides thereof,
Since it has an opening and closing plate that opens and closes the valve hole, it is possible to form a labyrinth-shaped gap that is bent in a U-shape between the central part of the valve plate and the substrate, and thus lifts the valve plate. Therefore, even if a relatively large gap is created between the one opening / closing plate and the board, the traveling wind that has entered the gap passes between the other opening / closing plate and the board, and the other valve hole Since it can be effectively prevented from moving toward the side by the maze-like slit, the amount of air invading the cap body due to the lift of the valve plate can be suppressed as much as possible. Moreover, since the operating protrusion is formed on the front side of the central portion of the valve plate having the above-mentioned concave groove on the back surface, it is necessary to maximize the outward protrusion amount of the protrusion while miniaturizing the protrusion itself. You can

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view of a helmet equipped with an outside air introduction hole opening / closing device of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is III of FIG. -III line enlarged sectional view, FIG. 4 is a IV-IV line sectional view of FIG. 3, and FIG.
FIG. 6 is an enlarged view of a V portion in the figure, FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG. 1, and FIG. 7 is an exploded perspective view of the outside air introduction hole opening / closing device. DESCRIPTION OF SYMBOLS 1 ... Helmet, 2 ... Hat body, 6 ... Outside air introduction hole, 21 ... Substrate, 22 ... Cylindrical part, 23 ... Valve hole, 24 ... Guide rail as a guide protrusion, 25 ... Cover, 26 ... Valve chamber, 27 ... Ventilation window, 28 ... Operation window, 29 ... Valve plate, 29a ... Open / close plate part, 29b ... Central part, 30 ... Recessed groove, 35, 36 ... Ribs as positioning engagement part

Claims (1)

[Scope of utility model registration request] 1. A valve having a hollow portion formed on the back surface of a substrate (21) joined to the outer surface of a cap body (2) having a plurality of outside air introducing holes (6) and fitted in the outside air introducing holes (6). A plurality of cylindrical portions (22) each having a hole (23) are integrally projected, and a guide protrusion (24) that crosses between the adjacent valve holes (23) is integrally formed on the surface of the substrate (21). And a positioning engaging portion (35, 3) integrally formed on the back surface of the cover (25) that covers the substrate (21).
6) is fitted on both upper and lower edges of the substrate (21),
By fixing the cover (25) to the cap body (2), the cover (25)
A valve chamber (26) for accommodating the valve plate (29) is defined between the base plate (21) and the substrate (21), and the guide protrusion ((b) is provided on the back surface of the central portion (29b) of the valve plate (29). The groove (30) that slidably engages with 24) and the operating protrusion (31) are formed on the surface of the central portion (29b), and both sides of the central portion (29b) are formed. , An opening / closing plate portion (29a) that opens and closes the valve hole (23) by the sliding of the concave groove (30) is provided in series, and the cover (25) corresponds to the valve hole (23). Ventilation windows (27)
And an operation window (28) for exposing the protrusion (31) to the outside.