JP3093742B2 - Mounting structure of shield on helmet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a helmet mounted on the head of a motorcycle or a vehicle occupant, and more particularly, to a shield for opening and closing a front opening of a helmet main body. Related to the structure.

[0002]

2. Description of the Related Art A conventional shield mounting structure for a helmet is disclosed in Japanese Patent Application Laid-Open No. 4-50307.

According to the above publication, the helmet includes a helmet body, an opening formed on the front surface of the helmet body and located in front of the wearer's face, and a helmet along the front surface and the left and right outer surfaces of the helmet body. A shield that extends and opens and closes an opening formed in the front surface, and a side end of the shield is detachably engaged with an outer portion of the helmet body, and the shield is vertically moved around the engagement portion. And a cover plate that covers the locking means from the outside and is attached to the helmet body.

When the shield is turned up and down around the locking portion, the opening is opened and closed, and the helmet body can be opened and closed by the locking means without removing the cover plate. The shield can be attached to and detached from the vehicle.

[0005]

By the way, in the above-mentioned conventional technique, even when the shield is in a fully closed position in which the opening is fully closed and the wearer's face is covered from the front, such as when using a helmet, the shield is not used. If an external force is applied to the side end in a direction away from the outer surface of the helmet body in the left-right direction, there is a possibility that the locking of the side end of the shield by the locking means with respect to the rotating member may be released.

That is, even when the shield is in the fully closed position, when an external force is applied to the shield in the left-right direction, the shield may be unexpectedly dropped from the helmet body, which is not preferable.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. When a shield for opening and closing an opening of a helmet body is attached to the helmet body, the shield is removed from the helmet body. The purpose is to prevent accidental drop-off and to achieve this with a simple configuration.

[0008]

The features of the present invention for achieving the above object are as follows.

According to the first aspect of the present invention, there is provided a shield 6 extending along the front surface and the left and right outer surfaces of the helmet main body 2 and capable of opening and closing an opening 5 formed in the front surface, and rotating about an axial center extending in the left and right directions. A turning member 17 supported on the left and right outer portions of the helmet main body 2 so as to be freely movable, and a side end of the shield 6 is detachably engaged with the turning member 17 so that the shield 6 is turned. Locking means (31, 34) for turning freely integrally with the member 17, and the rotation member 17 and the locking means (31, 34) are attached to the helmet body 2 so as to cover them from outside. In the helmet 1 provided with the cover plate 19,

When the shield 6 is in a fully closed position where the opening 5 is fully closed, the shield 6
Unlocking prevention means for preventing the locking means (31, 34) from unlocking the side end of the rotary member 17 when the shield 6 is at the fully open position where the opening 5 is fully opened.
Locking means (31, 3) of the side end of the shield 6 with respect to
And a lock release permitting means for permitting the lock release according to 4).

According to a second aspect of the present invention, in addition to the first aspect, the locking means (31, 34) is provided at a position radially separated from the axis of the rotating member 17 in the radial direction. The lock release prevention means is constituted by a part of the helmet main body 2 (corresponding to a part of the substrate 9), and when the shield 6 is in the fully closed position, the locking means (31, 34) rotated with the shield 6 ) Release the helmet body 2
The lock release permitting means is constituted by a space 42 formed in the helmet body 2, and when the shield 6 is in the fully open position, the engagement release means is rotated with the shield 6. The space 42 permits release of the lock by the stopping means (31, 34).

The invention according to claim 3 is the invention according to claim 1 or 2
In addition to the above invention, the locking means (31, 34) is formed on the locking portion 31 formed on the rotating member 17 and on the side end of the shield 6 so that the locking portion 31 is left and right. A locking portion 34 which is locked to be detachable from a direction, and biases at least one of the locking portion 31 and the locked portion 34 so as to lock each other. The point is that a means (corresponding to the cover plate 19) is provided.

[0013]

[Operation] The operation of the above configuration is as follows.

When the shield 6 is in the fully closed position where the opening 5 is fully closed, the unlocking of the side end of the shield 6 with respect to the rotating member 17 by the locking means (31, 34) is prevented. A blocking means and a member for permitting unlocking of the side end of the shield 6 with respect to the rotating member 17 by the locking means (31, 34) when the shield 6 is at a fully open position where the opening 5 is fully opened. Stop release permitting means.

For this reason, when the shield 6 is in the fully closed position where the opening 5 is completely closed, such as when the helmet 1 is used, even if an external force is applied to the shield 6, the side of the shield 6 with respect to the rotating member 17 is not affected. The locked state of the end portion is positively held by the lock release preventing means.

Therefore, when the shield 6 is in the fully closed position, the shield 6 is prevented from dropping out of the helmet body 2 unexpectedly.

On the other hand, when the shield 6 is at the fully open position where the opening 5 is fully opened,
The lock can be released, and the shield 6 can be attached to and detached from the helmet body 2.

In this case, even if the helmet 1 is worn by the wearer, since the opening 5 is fully opened, the attachment and detachment of the shield 6 can be performed without affecting the wearer. The shield 6 can be attached and detached without removing the cover plate 19.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 in the figure denotes a helmet, and for convenience of explanation, the direction of the arrow Fr in the figure will be described in the forward direction. Each figure shows the left part of the helmet 1,
Since this and the right part are symmetrical, only the left part will be described and the description of the right part will be omitted.

In FIG. 2, the helmet 1 is of a full-face type. The helmet 1 has a helmet main body 2, and the helmet main body 2 has a substantially hemispherical outer shell member 3 made of FRP. An inner shell member 4 made of foamed resin attached to the inner surface of the outer shell member 3;
An opening 5 formed on the front surface of the outer shell members 3 and 4 and corresponding to the face of the wearer, and a resin substrate 9 attached to the outer surface of the outer shell member 3 are provided. A shield 6 made of a transparent resin for opening and closing the opening 5 is provided. The shield 6 extends along the front surface and the left and right outer surfaces of the outer shell member 3 of the helmet body 2. 7 is a belt.

2 to 5, the substrate 9 has a substrate body 10 located slightly outward from the left side surface of the outer shell member 3 and protrudes from the substrate body 10 toward the outer shell member 3 side. The upper boss 11 which contacts the outer surface of the outer shell member 3
The upper boss 11 has a circular shape in a side view of the helmet 1.

Bolts 13 penetrate the upper boss 11 and the lower boss 12, respectively, and these bolts 13 are screwed to nuts 14 embedded in the outer shell member 3. Thereby, the board 9 is detachably attached to the outer shell member 3 as described above.

The left outer surface of the outer shell member 3 and the substrate body 10
A rotating member 17 made of resin and fitted to the upper boss 11 is provided in a space 16 between the upper boss 11 and the upper boss 11. The rotating member 17 is pivotally supported by the upper boss 11 so as to be rotatable around an axis extending to the left and right of the upper boss 11. Side and substrate body 1
It comes into sliding contact with 0 without rattling.

An elastically deformable resin cover plate 19 is provided to cover the substrate 9 and the rotating member 17 from the outside of the left side of the helmet body 2, and this cover plate 19 is attached to and detached from the substrate 9 of the helmet body 2. Can be attached freely.

The mounting of the cover plate 19 is performed as follows.

That is, a guide slot 20 concentric with the upper boss 11 is formed at the rear edge of the substrate body 10. The upper and lower edges of the substrate body 10 are also provided with locking pieces 2 respectively.
1 is formed. Further, a locking recess 22 is formed on the upper edge of the substrate body 10.

On the other hand, on the inner surface of the cover plate 19 on the helmet main body 2 side, a guide projection 24 is formed which can be fitted into and removed from the guide elongated hole 20 from the left outside position of the helmet main body 2. When the cover plate 19 is rotated about the axis of the upper boss 11 with the inner surface of the cover plate 19 pressed against the outer surface of the substrate body 10,
A pair of upper and lower locking hooks 25, 25 which can be engaged with and disengaged from the locking pieces 21, 21 project from the inner surface of the cover plate 19. Further, the locking hooks 21 and 21 are attached to the locking hooks 2.
A locking projection 26 is formed on the inner surface of the cover plate 19 for engaging and disengaging with the locking recess 22 when the locking members 5 and 25 are engaged.

Then, the cover plate 19 is
In the case of mounting, first, as shown by a dashed line in FIG. 3, the cover plate 19 is made to approach the outer surface side of the substrate body 10, and the guide projection 24 is fitted into the guide elongated hole 20. Next, the inner surface of the cover plate 19 is pressed against the outer surface of the substrate body 10. Then, the cover plate 19 is rotated from the posture indicated by the dashed line in the same manner as above, about the axis of the upper boss 11 in the direction indicated by the arrow A in FIG.

Then, the rotation is regulated to a predetermined state by the guide projection 24 sliding in the guide elongated hole 20, whereby the locking hooks 25, 25 are elastically attached to the locking pieces 21, 21. And the locking projection 26 is elastically engaged with the locking recess 22. Then, as shown by the two-dot chain line in FIG. 1, the solid line in FIG. 2, the two-dot chain line in FIG. 3, the solid lines in FIGS. 4, 5, and 6, and the two-dot chain line in FIG. Is attached to the substrate body 10.

To remove the cover plate 19, the procedure reverse to that described above may be used.

2, 3 and 5, an upper concave portion 28 and a lower concave portion 29 are formed on the outer surface of the front portion of the rotating member 17. These upper concave portion 28 and lower concave portion 2
9 are both open outward and forward, and
It has a tapered shape facing rearward in a side view. Also,
Due to the formation of the upper concave portion 28 and the lower concave portion 29, a locking projection 30 is formed therebetween.
The upper and lower width dimensions are increased toward the front.

Further, on the outer surface of the lower concave portion 29, a locking portion 31, which is an elliptical fitting projection in a side view, is formed.
The cross section of the locking portion 31 has a flat trapezoidal shape.

On the other hand, a side portion of the shield 6 is bent rearward, and a side end portion thereof protrudes rearward in a bifurcated manner, and an upper convex portion 32 and a lower convex portion 33 are formed. Each of the upper convex portion 32 and the lower convex portion 33 has a tapered shape facing rearward in a side view, and the upper concave portion 28 and the lower concave portion 29 have the same shape.
From the front side thereof so as to be freely detachable.

An engagement recess 27 is formed between the upper projection 32 and the lower projection 33. This locking recess 27
The upper and lower widths are increased toward the front, and the locking concave portion 27 is fitted to the locking convex portion 30 so as to be able to be fitted and removed from the front thereof.

Further, a locked portion 34 which is an elliptical fitting hole penetrating right and left is formed in the lower convex portion 33, and the locked portion 34 is formed in the locking portion 31 in the left-right direction. It can be fitted and removed from the outside. The side end of the shield 6, which is fitted to the rotating member 17 so as to be detachable, as described above, is connected to the locking member 31 and the locked portion 34 by the fitting of the rotating member. 17 is detachably locked. That is, the locking portion 31 and the locked portion 34 constitute locking means (31, 34) for locking the shield 6 and the rotating member 17 to each other to rotate integrally. .
Further, the locking means (31, 34) is provided with the rotating member 1 described above.
The locking means (31, 34) is provided at a position radially separated from the axis of 7 and is also covered by the cover plate 19 from the outside.

The rotating member 17 and the cover plate 19
When the shield 6 is moved rearward from the front side to fit the upper convex portion 32 and the lower convex portion 33 into the upper concave portion 28 and the lower concave portion 29, at the same time, the locking concave portion 27 6 with the elastic deformation of the side end of the locking projection 30
Fits. At this time, the locked portion 34 fits into the locking portion 31, and the upper convex portion 32 and the lower convex portion 33 elastically sandwich the locking convex portion 30. So, shield 6
Is fixed to the rotating arm 17, that is, the shield 6 can be integrally rotated together with the rotating member 17 without rattling.

In FIG. 3, a stop mechanism 35 is provided for stopping the shield 6 at a predetermined vertical turning position.

The stopping mechanism 35 will be described. An upper locking arm 36 and a lower locking arm 37 are provided at the rear edge of the rotating member 17 so as to project therefrom. The bosses 11 protrude from each other in the circumferential direction. On the other hand, a plurality of locking grooves 38 are formed on the inner surface of the substrate body 10 along the circumferential direction of the upper boss 11.

Each of the protruding ends of the upper locking arm 36 and the lower locking arm 37 is elastically fitted into any one of the locking grooves 38 so that the shield 6 and the rotating arm can be freely rotated. 17 can be stopped at a predetermined rotation position without rattling. Further, a lower stopper 40 and an upper stopper 41 are protruded from the inner surface of the substrate body 10.

As shown in FIG. 3, when the shield 6 is rotated downward to completely close the opening 5, the base of the lower locking arm 37 comes into contact with the lower stopper 40, and the lower stopper 40 contacts the lower stopper 40. Is prevented from rotating downward. Then, also in this state, the shield 6 is stopped by the stop mechanism 35.

Further, in the above case, the base of the lower locking arm 37 is moderately locked to the lower stopper 40 with slight elastic deformation. It is elastically stopped in the lowered downward rotation posture.

Conversely, when the shield 6 is rotated upward to fully open the opening 5 as shown by the two-dot chain line in FIGS. The base of the stop arm 36 abuts, and further upward rotation is prevented. And even in this state, the stop mechanism 35
This causes the shield 6 to stop at that position.

Further, in the above case, the base of the upper locking arm 36 is moderately locked with slight elastic deformation to the upper stopper 41, so that the shield 6 can It is elastically stopped in the upward rotation posture.

In FIGS. 2, 3, and 5, the rotation of the shield 6 causes the shield 6 to close the opening 5 at a part thereof (a fully closed position where the opening 5 is fully closed). (Including the position), the locking means (31, 3) of the side end of the shield 6 with respect to the rotating member 17
4) Lock release preventing means for preventing the lock release according to 4) is provided, and the lock release preventing means is constituted by a part of the substrate body 10 of the substrate 9 in the helmet body 2,
This will be described more specifically.

When the shield 6 is turned to the closed position, the locking means (31,
34), and the rotating member 17 having the locking means (31, 34) formed thereon and the side end of the shield 6 also rotate.
At this time, the shield 6 forming the locked portion 34
The outer surface of the lower convex portion 33 abuts against the inner surface of the substrate main body 10 which is a part of the helmet main body 2, and it is ensured that the locking concave portion 27 is going to separate from the locking convex portion 30 outward. While being blocked, the locked portion 31
Are also prevented from leaving outside. That is, a part of the helmet main body 2 prevents the operation when the locking means (31, 34) is to be unlocked, so that the shield for the helmet main body 2 via the rotating member 17 is provided. 6 is securely held.

1 and 2, and in FIG. 6, when the shield 6 is rotated upward and is in a fully open position where the opening 5 is fully opened, the shield 6 is An unlocking permitting means for permitting the unlocking of the side end portion by the locking means (31, 34) is provided. The unlocking permitting means cuts the substrate 9 of the board 9 of the helmet main body 2 into pieces. Chipped space 4
2, which will be described more specifically.

When the shield 6 is rotated upward and is at the fully opened position, the locking means (3
1, 34), and the rotating member 17 having the locking means (31, 34) formed thereon and the side end of the shield 6 also rotate. At this time, the outer surface of the lower convex portion 33 of the shield 6 forming the locked portion 34 coincides with the space 42 in the left-right direction, and can move outward through the space 42. That is, the space 42 allows an operation when the locking means (31, 34) is to be unlocked.

At this time, the substrate main body 10 comes into contact with the outer surface of the upper convex portion 32, thereby preventing the locking convex portion 30 from going outward from the locking concave portion 27. As shown by the solid line in FIG. 6, the front portion of the cover plate 19 elastically abuts on the outer surface of the lower convex portion 33 of the shield 6, and the locked portion 34 is detached from the locking portion 31. It has prevented you from trying. That is, the cover plate 19
The locked portion 34 is interposed via the lower convex portion 33 of the shield 6 so that the locking portion 31 and the locked portion 34 are locked to each other.
And a biasing means for biasing the power. Therefore, as described above, the unlocking of the locking means (31, 34) is performed in the space 4
2 allows the side end of the shield 6 to be locked with respect to the rotating member 17, thereby preventing the shield 6 from coming off the rotating member 17 unexpectedly.

When the shield 6 is to be removed from the rotating member 17, first, the shield 6 is rotated upward until the opening 5 is fully opened as described above (FIG. 1). And two-dot chain line in FIG. 2). Then, the unlocking of the locking means (31, 34) is allowed by the space 42. Next, the cover plate 19
The outer surface of the lower protrusion 33 of the shield 6 is pressed against the inner surface of the cover plate 19 so as to resist the elastic force of the cover plate 19, and the lower protrusion 33 is moved outward. Then, as shown by a two-dot chain line in FIG. 6, the cover plate 19 is elastically bent outward and the fitting of the fitting hole 34 of the lower convex portion 33 to the locking portion 31 of the shield 6 is released. That is, the locking means (3
1, 34) is released.

Therefore, if the shield 6 is moved forward as shown by the dashed line in FIG. 2 and FIG.
0, the locking concave portion 27 is elastically expanded and detached forward, and at the same time, the upper convex portion 32 and the lower convex portion 33 are pulled out from the upper concave portion 28 and the lower concave portion 29, and the cover plate is removed. 19
The removal of the shield 6 is completed in a state in which the shield 6 is attached to the helmet body 2.

On the other hand, when trying to attach the shield 6 to the rotating member 17 from the above state, the procedure described above may be reversed.

At this time, first, the upper concave portion 28 and the lower concave portion 2
When the upper convex portion 32 and the lower convex portion 33 are fitted to the 9, since these are both tapered, the positioning of the upper convex portion 32 and the lower convex portion 33 is automatically performed. Then, when the above-mentioned fitting is advanced from this state, the locking concave portion 27 automatically fits into the locking convex portion 30, and the locked portion 34 is locked by the elastic force of the cover plate 19. The part 31 is automatically fitted. Therefore, the shield 6 can be easily attached to the rotating member 17.

[0054]

The effects of the present invention are as follows.

According to the first aspect of the present invention, a shield extending along the front surface and the left and right outer surfaces of the helmet body and capable of opening and closing an opening formed in the front surface, and being rotatable about an axial center extending left and right. As described above, a rotating member supported on the left and right outer portions of the helmet body and a side end of the shield are detachably engaged with the rotating member so that the shield can be rotated integrally with the rotating member. A helmet comprising: a locking means for causing the helmet body to cover the rotation member and the locking means from outside;

When the shield is at the fully closed position where the opening is fully closed, the unlocking preventing means for preventing unlocking of the side end of the shield with respect to the rotating member by the locking means, and the shield And unlock release permitting means for permitting release of the side end of the shield with respect to the rotating member by the locking means when the opening is fully opened.

Therefore, when the shield is in the fully closed position where the opening is fully closed, such as when using a helmet, even if external force is applied to the shield, the side end of the shield is locked to the rotating member. Is positively held by the unlocking prevention means.

Therefore, when the shield is in the fully closed position, the shield is prevented from being accidentally dropped from the helmet main body, and a good wearing state is maintained for the wearer.

On the other hand, when the shield is in the fully open position where the opening is fully open, the unlocking is permitted by the unlocking permitting means, and the shield can be attached to and detached from the helmet body.

In this case, even if the helmet is worn by the wearer, the opening is fully open, so that the shield can be attached or detached without affecting the wearer. Also,
The shield can be attached and detached without removing the cover plate.

Accordingly, the attachment and detachment of the shield in this case can be performed without any trouble for the wearer, and the work of attaching and detaching the shield can be easily performed.

According to a second aspect of the present invention, the locking means is provided at a position radially away from the axis of the rotating member, and the unlocking preventing means is constituted by a part of the helmet main body. When the helmet is in the fully closed position, a part of the helmet body prevents the unlocking by the locking means rotated with the shield.

Here, the members on the helmet main body side are as follows:
Since it is necessary to sufficiently counteract the external force and the rigidity is high, the prevention of the unlocking of the locking means by the unlocking prevention means constituted by a part of the helmet body is as follows.
More reliably achieved.

Therefore, it is possible to more reliably prevent the shield from unexpectedly falling off the helmet body.

Further, the prevention of the unlocking is achieved by using a part of the helmet main body, and the use of the helmet prevents the shield from falling off with a simple configuration.

Further, the unlocking permitting means is constituted by a space formed in the helmet main body, and when the shield is at the fully open position, the unlocking by the locking means rotated with the shield is released by the space. Is allowed.

For this reason, since the lock release permitting means is a simple space having a simple structure, the structure of the helmet can be simplified while the shield is detachable from the helmet body.

According to a third aspect of the present invention, the locking means is formed on the locking portion formed on the rotating member and on the side end of the shield, and is capable of engaging and disengaging from the locking portion in the left-right direction. And a biasing means for biasing at least one of the locked portion and the locked portion so that the locked portion and the locked portion are locked to each other.

For this reason, the mutually locked state of the locking portion and the locked portion is held by the urging means.
If the shield is brought to the fully open position, and at this time, as described above, even if the unlocking permitting means allows the unlocking of the side end of the shield with respect to the rotating member, by the urging of the urging means, The shield is prevented from falling off unexpectedly from the helmet body.

In order to release the locked state between the locking portion and the locked portion, an operation force in the left-right direction is required to oppose the urging means. However, the direction of the operation force is clearly different from the direction of the operation force that is directed upward and downward when the shield is to be rotated up and down.

Therefore, it is possible to more reliably prevent the shield from being accidentally dropped from the helmet body due to the operation of rotating the shield.

[Brief description of the drawings]

FIG. 1 is an operation explanatory view of a left side surface of a helmet.

FIG. 2 is an overall left side view of the helmet.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;

5 is a sectional view taken along line 5-5 in FIG. 3;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 1;

FIG. 7 is a diagram corresponding to FIG. 1 and is an operation explanatory diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Helmet 2 Helmet main body 3 Outer shell member 5 Opening 6 Shield 9 Substrate (Lock release prevention means) 10 Substrate main body 11 Upper boss 17 Rotating member 19 Cover plate (biasing means) 28 Upper concave part 29 Lower concave part 31 Lock part (Locking means) 32 Upper convex part 33 Lower convex part 34 Locked part (Locking means) 42 Space (Lock release permitting means)

Claims (3)

(57) [Claims] 1. A shield extending along a front surface and left and right outer surfaces of a helmet body and capable of opening and closing an opening formed in the front surface, and a shield of the helmet body so as to be rotatable around an axis extending in the left and right directions. A rotating member supported on the left and right outer portions, and a locking means for locking a side end of the shield to the rotating member so as to be detachably engaged with the rotating member so that the shield is rotatable integrally with the rotating member. And a cover plate attached to the helmet body while covering the rotating member and the locking means from the outside thereof, when the shield is in a fully closed position where the opening is fully closed,
Unlocking prevention means for preventing unlocking of the side end of the shield with respect to the rotating member by the locking means, and when the shield is at a fully open position where the opening is fully open, A shield mounting structure for a helmet comprising: a lock release permitting means for permitting release of the side end by the lock means. 2. The locking means is provided at a position radially separated from the axis of the rotating member, the locking release preventing means is constituted by a part of the helmet main body, and the shield is in a fully closed position. At one time, a part of the helmet main body prevents the unlocking by the locking means rotated with the shield, while the unlocking permitting means is constituted by a space formed in the helmet main body, 2. The shield mounting structure for a helmet according to claim 1, wherein, when the shield is at the fully open position, the space allows unlocking by the locking means rotated with the shield. 3. The locking means is formed on a locking part formed on the rotating member and on a side end of the shield, and is locked to the locking part in a detachable manner from the left and right. 3. The locking device according to claim 1, further comprising a locking portion, wherein a biasing means is provided for biasing at least one of the locking portion and the locked portion so as to lock each other. Mounting structure of shield on helmet.