JPH0138884B2 - - Google Patents

Description

Detailed Description of the Invention A. Purpose of the Invention (1) Industrial Field of Application The present invention relates to a shield plate device for a helmet used mainly for occupants of motorcycles, and in particular, to a shield plate device for a helmet, in which a transparent shield plate is attached to a cap body. The present invention relates to a shield plate device for a helmet that is pivotally supported so as to be rotatable between a fully closed position in which a window in a front wall is fully closed and a fully open position in which the window is fully opened.

(2) Conventional technology Conventionally, in this type of helmet, a click stop device is provided between the shield plate and the cap body.
The shield plate is elastically held at a fully closed position, a fully open position, and several intermediate positions.

(3) Problems to be Solved by the Invention However, in the above-mentioned conventional device, when the shield plate is in the fully closed position, the plate cannot be fixed unrotatably, so when the helmet is faced with a strong driving wind. The wind pressure often causes the shield plate to resist the holding force of the click stop device, causing the window in the cap body to open. Further, when the motorcycle is traveling on a rough road, the helmet may vibrate violently and the window of the helmet may be opened.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shield plate device for a helmet that eliminates the above-mentioned problems.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a locking member movable between a locking position and an unlocking position on a cap body, and a shield plate on a shield plate. is characterized in that it is provided with a locking portion that is locked when the locking member is moved to the locked position with the plate fully closed, and is released when the locking member is moved to the unlocked position.

(2) Effect According to the above configuration, when the locking member is moved to the locking position with the shielding plate in the fully closed state, the locking portion provided on the shielding plate is locked to the locking member and the upward rotation of the shielding plate is prevented. be done.

When the lock member is moved to the unlocked position with the shield plate fully closed, the locking portion of the shield plate is released from the lock member, allowing the shield plate to rotate to the fully open position.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. 1, the cap body 1 of a helmet is of a full-face type having a chin cover portion 1a below a window 2 on its front wall. The window 2 is opened and closed by a transparent shield plate 3.

The shield plate 3 is made of synthetic resin and is formed into a curved shape so as to surround the front half of the cap body 1, and has ears 3 at both ends that extend toward the rear of the window 2.
It is considered a. This shield plate 3 is given elasticity to contract in the left-right direction of the helmet. In other words, the radius of curvature of the shield plate 3 in its free state is set to be sufficiently smaller than the radius of curvature of the front half circumference of the cap body 1.

The shield plate 3 is rotatable around a pivot 11 between a lower fully closed position A where the window 2 is fully closed and an upper fully open position B where the window 2 is fully opened. 1 is provided with a recess 4 that receives the entire shield plate 3 in the fully closed position A, and the depth of this recess 4 is approximately the same as the thickness of the shield plate 3, so that the recess 4 receives the entire shield plate 3. The outer surface of the shield plate 3 is substantially flush with the outer surface of the cap body 1 surrounding it.

The lower end surface of the shield plate 3 near the ear portion 3a is recessed toward the inside of the shield plate 3, and one end of the recessed portion is notched approximately at right angles to the lower end of the shield plate 3 to form a locking portion 3b. . Further, a camera 5 for opening and closing the shield plate 3 is integrally formed at the front of the lower edge of the shield plate 3.

In the recess 4 , a rubber seal member 6 that can be brought into close contact with the inner surface of the shield plate 3 is adhered to the periphery of the window 2 .

As shown in FIGS. 2 and 9, the shield plate 3
is attached to the cap body 1 via a pair of left and right brackets 8 (only the left one is shown in the figure). The bracket 8 has the pair of long holes 9, 9, and the screws 10, 10 inserted through these are inserted into the cap body 1.
It is fixed to the cap body 1 by screwing into the screw holes 7, 7.

A pivot shaft 11 and a guide shaft 12 located in front of the pivot shaft 11 are integrally protruded on the outer surface of the bracket 8, and a support hole 13 and a guide shaft bored in the ear portion 3a of the shield plate 3 are formed in these. The holes 14 are fitted respectively, and both shafts 11 and 12 are fitted to prevent them from coming off.
Screws 15 and 16 are respectively screwed onto the end faces of.

Both the support hole 13 and the guide hole 14 are long holes, but the support hole 13 extends substantially horizontally along the front and back direction of the helmet, whereas the guide hole 14 extends slightly downward in the rear direction. It consists of a front half part 14a that is inclined to , and a rear half part 14b that draws an arc around the rear end of the support hole 13.

At the upper end of the bracket 8, an expansion cam 17 is formed which faces the upper edge of the ear portion 3a when the shield plate 3 is in the fully closed position A. As shown in FIG. It stands adjacent to the upper wall of the recess 4 so as to be inclined upward.

At the front end of the bracket 8, an elongated rocking piece 18 extending forward and a fixed piece 19 extending parallel to the rocking piece 18 and longer than the rocking piece 18 are provided. A claw 20 is provided to protrude outward from the cap body 1.

A positioning portion 21 for positioning a locking member 28, which will be described later, is formed near the tip of the fixed piece 19. This positioning part 21 consists of an annular part 22 that projects slightly from the upper and outer surfaces of the fixed piece 19, and a protrusion 23 that projects from the upper surface of the annular part 22. It has a screw hole 25 for guiding. A stepped portion 26 is formed on the outer surface of the fixed piece 19 from one end of the annular portion 22 toward the tip of the fixed piece 19, and a stepped portion 26 is formed on the surface of the fixed piece 19 facing the cap body 1 as shown in FIG. A stepped portion 27 is formed from one end of the annular portion 22 toward the tip of the fixing piece 19.

In the figure, 28 is a locking member which is an essential part of the present invention.
A long groove 29 is formed in the lock member 28 from one end in the longitudinal direction toward the inside thereof, and a pair of side pieces 30a and 30b forming the long groove 29 are connected to the side piece 3 on the cap body side.
0a is formed long. The distal end of the side piece 30a is shaved so as to be gently inclined toward the cap body side to form a scooping surface 31. An elongated positioning hole 32 is bored in the longitudinal direction of the side piece 30a, and the projection 2 of the annular portion 22 is formed above the inner peripheral surface of the hole 32.
Three grooves 33a, 33b, 33c that engage with
is formed.

On the surface of the lock member 28 facing the cap body 1, there is a
As shown in the figure, a step portion 34 is formed by cutting out the lower half of the longitudinal direction, and a positioning hole 32 of the step portion 34 is formed.
From the end portion to the tip of the lock member 28, a step portion 35 is formed by cutting deeper, and a guide groove 37 is formed in the upper side wall surface of the step portion 35. Also,
A protrusion 38 is provided on the upper surface of the lock member 28, and a receptacle 39 for operating the lock member 28 is provided on the outer surface of the lock member 28. In order to set the locking member 28 having the above structure on the cap body 1, the positioning hole 32 is fitted into the annular part 22 of the positioning part 21 below the shield plate 3, and the stepped part 26 of the fixing piece 19 is inserted into the guide of the locking member 28. Insert into the groove 37. Thus, the locking member 28 is slidably engaged with the tip of the fixing piece 19, and is operated between a locking position L and an unlocking position U, which will be described later.

The bracket 8 and the shield plate 3 are provided with a click stop device 46 so that the shield plate 3 can be held not only in the fully closed position A and the fully open position B but also in a plurality of intermediate positions therebetween.
The device 46 includes a plurality of notches 47, 47... and projections 4 that selectively engage these notches 47, 47...
The notches 47, 47, .
are provided protrudingly on the inner surface of the ear portion 3a. The engagement force of this protrusion 48 with the notches 47, 47...
It depends on the elasticity of a.

The lock member 28 is attached to the lower end surface of the shield plate 3.
A slope 3c is formed that slopes downward toward the front of the cap body 1 with respect to the sliding direction of the cap body 1. When the shield plate 3 is in a fully closed state, the locking member 28 is directed toward the front of the cap body 1, and the tip of the fixing piece 19 is When the locking member 28 is slid up to this point, the protrusion 38 of the locking member 28 comes into contact with the slope 3c of the shield plate 3 and pushes up the slope 3c, so that the shield plate 3 opens the window 2 slightly (slightly open position C).

The degree of opening of the window 2 in the above case is set smaller than the degree of opening of the window 2 which is opened when the shield plate 3 moves by one pitch of the notch 47 of the click stop device 46. When the shield plate 3 is in the slightly open position C, the notch 47 of the click stop device 46 and the protrusion 48 are in a state before they are engaged.

In the figure, reference numeral 40 denotes a side cover that covers the bracket 8 and the ear portion 3a. A tongue piece 42 having a screw hole 41 extends from the front end of the cover 40, and a top portion provided on the bracket 8 is provided on the rear inner surface. , a locking claw 44a that engages with the lower pair of locking claws 43a and 43b,
44b is formed. Then, screw the screw 24 into the female threaded hole 45 of the cap body 1, and
is fixed to the cap body 1 and the bracket 8 by engaging with the locking claws 43a, 43b of the bracket 8.

Next, the operation of the present invention with the above configuration will be explained. When the shield plate 3 is in the fully closed position A,
The lock member 28 is in the lock position L, that is, the fixed piece 19
It is located closest to the proximal end (towards the right in the figure),
The groove 33a at the left end of the positioning hole 32 and the annular portion 22
The protrusion 23 is engaged with the protrusion 23 (see FIG. 2). At this time, as shown in FIG. 3, the scooping surface 31 of the locking member 28 is in a state that it has sunk into the lower surface side of the swinging piece 18, and the swinging piece 18 is pushed outward and the claw 20 is inserted into the shield plate 3. The shield plate 3 is engaged with the locking portion 3b, and the upward rotation of the shield plate 3 is prevented. In this case, the shield plate 3 is drawn toward the recess 4 and received in the recess 4 of the cap body 1, and the outer surface of the shield plate 3 is a continuous curved surface that is substantially flush with the outer surface of the cap body 1. This contributes to reducing the air resistance of the helmet. By the way, in this state, the second
As shown in the figure, the pivot shaft 11 and the guide shaft 12 are located at the front ends of the support hole 13 and the guide hole 14, respectively.

Now, from the fully closed position A, operate the camera 39 to move the locking member 28 to the left in the figure and engage the central groove 33b with the protrusion 23 of the annular portion 22 (unlocked position U). ), as shown in FIGS. 5 and 6, the scooping surface 31 is detached from the lower surface of the swinging piece 18, and the swinging piece 18 returns to its original position due to its elasticity, and the claw 20 and the locking portion 3b of the shield plate 3 are connected to each other. is disengaged. As a result, the shield plate 3 becomes unlocked and can be rotated.

In order to open the window 2, when you put your finger on the cover 5 of the shield plate 3 and apply upward force, the shield plate 3 first tries to rotate upward about the pivot 11, but the guide shaft 12 Due to the mutual guiding action between the guide hole 14 and the downwardly inclined front half 14a of the guide hole 14, the shield plate 3 is pushed forward at the same time as it is rotated upward.
When the ear portion 3a attempts to pass the expansion cam 17 as the shield plate 3 moves upward, the ear portion 3a is pushed outward by the cam 17. As a result, the shield plate 3 can completely escape from the recess 4, and when rotated to the uppermost position,
It is held at the fully open position B. In this case, the shield plate 3 can be appropriately held at a plurality of intermediate positions between the fully closed position of the window 2 and the fully closed position A by the click stop device 46, as shown by the chain line in FIG. .

Next, when the locking member 28 is moved to the leftmost position in the figure by operating the camera 39, the groove 33c at the right end of the positioning hole 32 engages with the protrusion 23 (see FIG. 8). In this case, the lock member 28 is already in the unlocked state, and the shield plate 3 can be rotated upward and downward. When the shield plate 3 is positioned at the lowest position, the protrusion 38 protruding from the upper surface of the locking member 28 comes into contact with the slope 3c of the shield plate 3.
The shield plate 3 is pushed up slightly, and the shield plate 3 is held at this position, that is, the slightly opened position C of the window. Further, at this time, the notch 47 and the projection 48 of the click stop device 46 are in a state before they are engaged. When the shield plate 3 is held at the slightly open position C, a slight gap is created between the shield plate 3 and the lower edge of the window 2, and a moderate amount of wind flows in through the gap, so that even on rainy days or in summer,
It is possible to prevent the shield plate from fogging due to exhalation when used in winter.

C. Effects of the Invention As described above, according to the present invention, the locking member is provided on the cap body so as to be movable between the locked position and the unlocked position, and the locking member is provided on the shield plate so that the locking member can be locked when the plate is fully closed. Since we have provided a locking part that is locked when moved to the locking position and released when the locking member is moved to the unlocked position, when the locking member is moved to the locked position with the shield plate fully closed, the locking part of the shield plate is released. The stop portion is engaged with the lock member to prevent upward rotation of the shield plate. Therefore, even if the shield plate is exposed to strong wind pressure while riding, or if the helmet vibrates violently while the motorcycle is traveling on rough roads, the shield plate will rotate upward and the window of the cap body will open. There will be no such thing as
It is effective when applied to helmets for motorcycle occupants.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a side view of the entire helmet when the shield plate is in the closed position, and Fig. 2 is a main part of Fig. 1 with the side cover removed. FIG. 3 is a sectional view taken along the line - - in FIG. 2, FIG. 4 is a sectional view taken along the - line in FIG. Figures 6 and 7 are sectional views taken along lines - and - in Figure 5, Figure 8 is a side view of the entire helmet when the shield plate is in the slightly open position, and Figure 9 is an exploded perspective view of the shield plate device. , FIG. 10 is an exploded perspective view of the positioning portion and locking member constituting the shield plate device, viewed from the opposite direction of FIG. 9. A... Fully closed position, B... Fully open position, L... Locked position, U... Unlocked position, 1... Cap body, 2
...Window, 3...Shield plate, 3b...Locking part, 2
8...Lock member.

Claims (1)

[Claims] 1. A helmet shield in which a transparent shield plate is pivotally supported on the cap body so as to rotate between a fully closed position where a window on the front wall of the cap body is fully closed and a fully open position where the window is fully opened. In the plate device, a locking member is provided on the cap body so as to be movable between a locking position and an unlocking position, and the shielding plate is latched to the shielding plate when the locking member is moved to the locking position with the plate in a fully closed state;
A shield plate device for a helmet, comprising a locking portion that is released when the locking member is moved to an unlocked position.