JPH0454181Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a vent opening/closing device that adjusts the amount of outside air flowing into the inside of a helmet by opening and closing the vent provided in the helmet using a shutter. .

[Prior art] In helmets for motorcycles, etc., a ventilation hole is provided in the front part of the helmet, which corresponds to the forehead of the helmet wearer, to introduce outside air into the helmet, making it easier to wear the helmet. There is something that prevents the head from getting stuffy. These vents are designed to be opened and closed by a shutter so that the vehicle can respond precisely to changes in surrounding conditions, such as when driving in the rain.

As an example of this, Japanese Utility Model Application Publication No. 53-141119 discloses a device in which a ventilation hole is surrounded by a generally trumpet-shaped air collecting device and the shutter is opened and closed laterally.

[Problems to be Solved by the Invention] Incidentally, in order to increase the amount of air taken into the helmet, it is necessary to position the opening of the ventilation hole in a position where it can directly face the wind while driving at the front of the helmet as much as possible. The position that meets these conditions is the part where the inclination angle of the curved surface is largest, such as near the top of the shield in the closed state, rather than the curved part with a large curvature on the top of the head. is within a narrow limited range in the vertical direction.

Therefore, in order to provide a vent with a larger opening area within such a limited area, multiple small holes should be lined up horizontally, or a horizontally long It is desirable to have a single slotted hole.

However, if you do this, the shutter that opens and closes the ventilation hole becomes horizontally long, and if you move such a horizontally long shutter in the vertical direction,
During movement, the shutter may tilt diagonally to the left or right and get stuck, so it is difficult to adopt the vertical movement format of the horizontally elongated shutter, and the shutter is forced to move horizontally as in the above-mentioned publication. However, the knob part that touches the fingertip of the design must be as small as possible, and on the other hand, this small knob part may be operated with a gloved fingertip, so the operability of the shutter in such a case is limited to the fingertip. Vertical movement, which requires only pushing up or down with , is clearly superior.

Furthermore, from a design standpoint, it is not advantageous to provide a large air collector as in the above-mentioned publication. Therefore, a device that can increase the amount of air intake and has an excellent design is desired.

The main purpose of this invention is to realize such a request.

[Means for solving the problems] In order to solve the above problems, the present device has a horizontally elongated shutter that can move up and down relative to the base, and has an exposed portion that can be operated with fingers in the opening and closing directions over almost its entire width, the base has a horizontally elongated base with approximately the same width as the shutter, and guide portions are provided at both ends and the center of the base in the longitudinal direction to guide the up and down movement of the shutter, and the air vent is opened in a position that is opened when the shutter moves upward.

[Operation of the invention] Since the shutter is horizontally elongated, the opening can be enlarged in the horizontal direction by arranging a plurality of ventilation holes horizontally in the form of small holes or by making them horizontally elongated holes. Also, moving the shutter upwards will open the ventilation holes. For this reason, the ventilation holes can be opened with a relatively large opening area in a relatively narrow area that can face more directly toward the driving wind at the front of the helmet, increasing the amount of air intake and eliminating the need for a large air collection device. This makes it an excellent design.

In addition, since the shutter moves while being guided by guide sections provided at both lengthwise ends of the base and at the center, it is difficult to tilt laterally. If the shutter is tilted, correct the tilt by operating a suitable part of the exposed part formed in the direction of approximately the entire width of the shutter with your finger.

[Embodiment] FIGS. 1 to 8 show an embodiment of a helmet according to the present invention. FIG. 1 shows the external appearance of the helmet, in which a vent opening/closing device 2 is provided on the front side of a cap body 1 made of glass fiber reinforced plastic or the like.
A shield 3 is provided at the portion corresponding to the face when the helmet is worn, and is rotatably attached to the side of the cap body 1 by a hinge 4.

FIG. 2 is an enlarged and cutaway view of two parts of the ventilation hole opening/closing device. The ventilation hole opening/closing device 2 consists of a shutter 5 and a base 6 molded using a thermoplastic band elastic resin material such as vinyl chloride, and the base 6 is fixed on the front surface of the cap body 1. However, it is also possible to use thermosetting resin as the molding material for both.

A notch 7 is formed at the lower end of the center of the base 6, and when the shutter 5 is closed, a space is formed between the cutout 7 and the lower edge of the knob 8. Furthermore, a mounting leg 1 extending toward the cap body 1 is integrally formed on the upper back surface of the base 6, and is inserted into a mounting hole formed through the cap body 1 in advance to correspond to the mounting leg 1. It is fixed onto the cap body 1 by making the tip protrude inside the cap body 1 and heat caulking the protruding portion.

Furthermore, ventilation holes are formed at the bottom of both sides of the notch 7 of the base 6, as will be described in detail later, and these are fitted with through holes previously formed in the cap body 1, and further formed in the liner 10. A ventilation passage 11 is arranged to communicate with it.

The shutter 5 is assembled to a base 6 as described later, and can be slid upward (in the direction of the arrow) by pushing a knob 8 with a fingertip F. The ventilation hole opening/closing device 2 is thin so that even when the shield 3 rotates upward on the trajectory T and moves to the position shown by the two-dot chain line, it does not get in the way of the movement.

FIG. 3 shows the ventilation opening/closing device 2 disassembled into a shutter 5 and a base 6. Shutter 5
is shaped like a horizontally long ellipse with both sides cut out, and sliders 12 are formed protruding from both left and right ends.

The sliders 12 are formed on both sides of the shutter 5, and are bent in the direction of the base 6 so as to form a step corresponding to the thickness of the plate, and their tips are free ends.

The front surface 13 of the shutter 5 is an exposed part that extends over almost the entire width direction and can be directly operated with fingers, and since there is no need to operate it with fingers in normal cases, it can be used as a free decorative part, and suitable letters or marks can be placed here. You can draw etc. Further, a pair of ribs 14 that are parallel to each other in the vertical direction are integrally formed on the back side of the front surface 13.

On the other hand, the base 6 has a substantially oblong elliptical shape corresponding to the shutter 5, and has guide grooves 15 formed by stepped molding on both left and right sides thereof. The slider 12 is housed in the guide groove 15 so as to be movable in the vertical direction. The guide groove 15 has a length approximately twice the width of the slider 12 in the moving direction.

The left and right end portions on the sides of the guide groove 15 form stepped guide portions 16 that protrude forward so as to be flush with the shutter 5 in the closed state.

At the lower part of the base 6, in the vicinity of the left and right guide parts 16, ventilation holes 17 are formed so as to be covered with the lowered shutter 5 and to be opened when the shutter 5 is moved upward. ing.

Further, a notch 7 is formed below the center between the left and right guide portions 16 and has a width that accommodates the knob 8 and a range in which the knob 8 moves up and down as the shutter 5 moves. Then, the notch 7 and each ventilation hole 17
are arranged horizontally.

Further, a pair of vertically parallel ribs 18 are integrally formed in the center so as to be adjacent to the ribs 14 of the shutter 5, so that the ribs 14 come into sliding contact with the ribs 18 when the shutter 5 moves up and down.

A guide recess 18a is formed in a portion of the upper end edge of the base 6 adjacent to the rib 18 to fit the rib 14 and guide its movement. Furthermore, ribs 19 are formed continuously from the ribs 18 in the left and right directions.

To attach this shutter 5 to the base 6,
First, bend the shutter 5 and insert the left and right sliders 12 into the guide grooves 15 of the base 6 as shown by the arrows. Next, when the force applied to bend the shutter 5 is removed, the shutter 5 returns to its original state due to its own elasticity. Therefore, the shutter 5 and base 6 are combined and integrated in a state in which the slider 12 can move up and down within the guide groove 15.

FIG. 4 shows the back side of the shutter 5 and the base 6. At the center of the lower edge of the shutter 5, a knob 8 is formed which is bent and protrudes toward the base 6 and can be accommodated in the notch 7. The amount of protrusion of the knob 8 is approximately equal to the thickness of the base 6.

Since the state shown in FIG. 4 is the back side of the base 6, the guide portions 16 on both the left and right sides are in a recessed state.
A click protrusion 20 slightly protruding from the general surface is integrally formed approximately at the center thereof. The click protrusion 20 is provided to give a click feeling to the movement of the slider 12.

Further, a pair of mounting legs 9 are integrally formed in the upper part of the central part so as to extend in parallel, and a pair of cylindrical parts extending rearward from the ventilation hole 17 are cut out in the lower part of the central part. They are integrally formed in parallel with 7 in between.

In addition, at the center of the back surface of the base 6 and above the notch 7, there is a molding mark 21 of the redirect pin during molding.
is formed, and furthermore, a notch 7 is formed approximately in the center of the base 6.
A gate mark 22 is formed on the edge of the plate by injection molding using a pin gate.

To attach this ventilation hole opening/closing device 2 to the cap body 1 of a helmet, first attach the base 6 as shown in FIG.
The cylindrical part extending from the ventilation hole 17 formed in the cap body 1 is fitted into the through hole (not shown) of the cap body 1, and the mounting leg 9 is inserted into the mounting hole of the cap body 1 as described above to heat it. It is fixed by caulking. However, it can also be fixed by adhesive or the like.

Next, as shown in FIG. 3, the left and right sliders 12 of the shutter 5 are fitted into the guide grooves 15 on the left and right sides of the base 6. At this time, the knob 8 is also housed in the notch 7.

In this embodiment, the thickness of the ventilation hole opening/closing device 2 is made thin as described above, and the thickness of the shutter 5 and base 6 is reduced.
It is only about the total thickness of the . However, knob 8 has notch 7
As a result, the protrusion amount is approximately the same as the total thickness of the shutter 5 and the base 6, and is sufficient to fit over the tip of a finger. Therefore, when the shutter 5 is to be slid up and down, it is only necessary to press the upper or lower edge of the shutter 5 with a fingertip, which is extremely easy to operate.

FIG. 5 shows the vent opening/closing device 2 in a closed state, in which the slider 12 of the shutter 5 is in the lowest position where it abuts the lower edge of the guide portion 16. At this time, since the shutter 5 seals the ventilation hole 17, outside air does not enter into the cap body 1. At this time, the upper edge of the slider 12 is in contact with the outer periphery of the click protrusion 20.

When the ventilation hole opening/closing device 2 is in a closed state, the shutter 5 and the base 6 are aligned to form a single, substantially horizontally oblong ellipse. When opening the ventilation hole opening/closing device 2 from this state, move your fingertip F to the knob 8 as shown in FIG.
to push the shutter 5 upward (in the direction of the arrow). At this time, since the knob 8 extends into the notch 7, the depth is at least equal to the total thickness of the shutter 5 and the base 6. Therefore, the fingertip F can be reliably hooked onto the knob 8, the shutter 5 can be slid with a light force, and the slider 12 is guided by the guide groove 15 of the base 6 and moved upward.

Therefore, the shutter 5 is moved by the slider 12.
Since it is necessary to move over the click protrusion 20, a frictional force is generated at that time. This frictional force allows the shutter to stop moving at any desired position. Therefore, ventilation hole 17
The amount of outside air flowing in can also be adjusted freely.

When the shutter 5 moves to the uppermost position as shown in FIG. 6, the lower edge of the slider 12 comes into contact with the outer periphery of the click protrusion 20 and stops without falling naturally, resulting in the fully open state shown in the figure. .

Therefore, the click protrusion 20 provides a click feeling when selecting at least two positions, the lowermost position and the uppermost position.

FIG. 7 shows the cross-sectional structure of FIG. 6, and it can be seen that the slider 12 has climbed over the click protrusion 20 and has come into contact with the outer periphery of the click protrusion 20 and is stopped.

Note that the click protrusion 20 protrudes from the general surface of the guide portion 16 by an amount H, and when the slider 12 passes over it, it is elastically deformed to give a click feeling. At this time, since the slider 12 has a free end, it is easy to elastically deform.

Further, since the rib 18 is sandwiched between the ribs 14 and slidably contacts each other, and the rib 14 is fitted into the guide recess 18a, the slider state is stabilized. The rib 18 and the guide recess 18a serve as a guide section in the center of the base 6, and the guide sections 16 are also provided at both lengthwise ends of the base 6. When moving it, it becomes difficult to tilt diagonally to the left or right.

Moreover, even if the shutter 5 is tilted, the front part 13, which is exposed over almost the entire width of the shutter 5, can be pressed anywhere with a finger, so the tilt can be easily corrected by pressing an appropriate spot with a finger. can.

Therefore, even if the shutter 5 is made into a horizontally elongated shape, good operability can be maintained.

Since the shutter 5 was made horizontally long in this way,
Two ventilation holes 17 are provided side by side in the horizontal direction, so that the opening can be expanded in the horizontal direction.

Moreover, a ventilation hole 17 is provided at the bottom of the base 6 so as to be opened when the shutter 5 is pushed up. Therefore, at a position where the ventilation hole 17 is as close as possible to the upper edge of the shield 3 from the head side,
In addition, since the front part of the helmet is located in a position that can more directly face the wind while driving, it is possible to increase the amount of air taken into the helmet.

Moreover, since the base 6 is curved along the curvature of the cap body 1, the gap between the cap body 1 and the shield 3 can be minimized.

Moreover, since the entire structure is relatively compact, it has an excellent design.

FIG. 8 shows a method of molding the base 6 (corresponding to a portion consisting of cavities 23 and 24, which will be described later).
26 by injection molding.

A base 6 is attached to the mating surface of the upper mold 25 and the lower mold 26.
A cavity 23 corresponding to the guide portions 16 on both sides and a cavity 24 corresponding to the central portion are formed. A reject pin 27 is slidably inserted into the upper die 25 and is retracted by a distance H from the general surface inside the cavity 23. Also, a redirect pin 28 is slidably inserted into a portion corresponding to the cavity 24, and its tip is aligned with the mold surface. Furthermore, a pin gate 29 is provided approximately in the center of the upper die 25.

Therefore, in the state shown in the figure, molding resin is injected through the pin gate 29, and after cooling, the lower mold 26 is opened and the reject pins 27, 28 are projected downward in the figure, thereby removing the base 6 from the mold. At this time, the click protrusion 2 is attached to the molding surface by the reject pin 27.
0, molding marks 21 are formed by the reject pin 28, and the pin gate 29
A gate trace 22 is also formed (see FIG. 4).

Therefore, according to this embodiment, the click protrusion 20 can be easily and advantageously manufactured using a rigid pin.

Note that the above embodiment can be applied in various ways. For example, the click protrusion 20 may be formed on the slider side. Further, by providing a plurality of projections and depressions on the mating surface to engage with the click protrusion 20, or by providing a plurality of click protrusions 20, a click mechanism that can be adjusted in stages may be provided.

[Effects of the invention] The ventilation hole opening/closing device according to the invention opens the ventilation hole to a position where it opens when the vertically movable shutter is pushed upward, thereby making the opening position of the ventilation hole more suitable for driving wind. The amount of air taken into the helmet can be increased by opening it to a position where it can face directly towards the helmet.

In addition, since the movement of the shutter is guided by the guide parts provided at both lengthwise ends and the center of the base, it is difficult to tilt diagonally to the left or right during vertical movement, and even if it does tilt, approximately the entire width of the shutter can be maintained. Since it is an exposed part, you can easily correct the tilt by pressing the appropriate place with your finger.

As a result, even though the shutter is horizontally elongated and moves vertically, it is possible to improve ventilation inside the helmet, improve operability, and eliminate the need for a large air collector, resulting in an excellent design. become something.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention. Figure 1 is an external view of the helmet, Figure 2 is the
A partially broken sectional view corresponding to the - line in the figure, Figures 3 and 4 are assembly diagrams of the main parts, Figures 5 and 6 are plan views showing the function of the main parts, and Figure 7 is the figure 6. FIG. 8 is a cross-sectional view taken along the - line, and FIG. 8 is a cross-sectional view showing the molding method. Explanation of symbols, 1...Cap body, 2...Vent opening/closing device, 3...Shield, 5...Shutter, 6...
Base, 7... Notch, 8... Knob, 12... Slider, 13... Front (exposed part), 14... Rib,
16... Guide portion, 17... Ventilation hole, 18... Rib (guide portion), 18a... Guide recess, 20...
...Protrusion for clicking.

Claims (1)

[Scope of utility model registration request] In order to adjust the amount of outside air flowing into the inside of the helmet, which is covered by a rotatable shield on the front,
It is a device for opening and closing the vent opening provided in the front part of the helmet, which corresponds to the forehead of the helmet wearer, and includes a shutter that opens and closes the vent, and a shutter that guides the movement of the shutter and is fixed to the helmet side. The shutter has a horizontally elongated shape and is movable in the vertical direction with respect to the base, and has an exposed part that spans almost the entire width and can be operated with a finger in the opening and closing direction, and the base is abbreviated as the shutter. The base has a horizontally elongated shape with the same width, and has guide parts at both ends and the center in the longitudinal direction of the base to guide the vertical movement of the shutter, and the ventilation hole is opened at a position where it is opened when the shutter moves upward. A ventilation opening/closing device for a helmet, which is characterized by: