JPH05279905A - Mechanism for opening or closing shield of helmet - Google Patents

Abstract

PURPOSE:To provide the helmet shield mechanism capable of securing the sure attachment of a shield and a cover member even under severe employment conditions in which large wind pressures act on the shield and the cover member. CONSTITUTION:In the shield-opening or closing mechanism of the helmet, an under base 20 and a base 30 are attached to the main body 2 of the helmet, and a slider 40 engaged with the base 30 is rotatably and pivotally attached to the main body 2 of the helmet. The end of a shield 4 for covering the front opening 3 of the main body 2 of the helmet is attached to the slider 40 with a cap 50. The under base 20, the base 30, the slider 40, etc., are covered with a cover 60 attached to the under base 20. In the shield-opening or closing mechanism, a rotary rock mechanism is employed for the attachment of the cat 50 to the slider 40 and/or for the attachment of the cover 60 to the under base 20. In the attachment structure, the shield and the cover 60 can be thereby mechanically surely attached even under severe employment conditions in which large wind pressures act on the shield and the cover.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield opening / closing mechanism for a helmet in which a front opening is covered with an openable / closable shield.

[0002]

2. Description of the Related Art Conventionally, as a helmet to be worn when riding a motorcycle or the like, a helmet in which a front opening of the main body is covered with a transparent shield in order to protect the rider's face from wind and rain and dust during traveling. Are known.

By the way, the shield is attached to the main body of the helmet in a freely openable and closable manner. As an opening / closing mechanism of the shield, for example, a slider member is provided which attaches the first and second base members to the helmet main body and engages with the second base member. Is rotatably pivoted to the helmet body, the end of the shield is attached to the slider member by a connecting member, and the cover member attached to the first base member covers the first and second base members and the slider member. Is known (Japanese Patent Laid-Open No. 3-64507).
(See the official gazette).

[0004]

However, in the above-mentioned conventional shield opening / closing mechanism, the attachment of the connecting member to the slider member and the attachment of the cover member to the first base member are performed with the protrusion protruding on one side. Since it was done by forcibly fitting it into the hole formed in the car, when the rider turns to the rear while traveling at high speed on a motorcycle etc. (for example, traveling at a speed of 300 Km / h), a shield or cover is used. When a large wind pressure is applied to the members, the attachment of the connecting member and the cover member may become unstable.

The present invention has been made in view of the above problems, and an object of the present invention is to secure the attachment of the shield and the cover member even under a special use condition in which a large wind pressure acts. It is to provide a shield opening / closing mechanism for a helmet.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to attach first and second base members to a helmet main body, and to make a slider member that engages with the second base member rotatable on the helmet main body. The shield member pivotally attached to the front end portion of the helmet body is attached to the slider member by a connecting member, and the cover member is attached to the first base member to form first and second base members and a slider member. In the shield opening / closing mechanism of the helmet configured to cover the above, a rotation lock mechanism is used for attaching the connecting member to the slider member and / or attaching the cover member to the first base member.

[0007]

The rotation lock mechanism employed in the present invention is, for example, a structure in which a protrusion having an inverted T shape in side view provided on a connecting member is passed through a slit-shaped hole formed in the slider member, and then the entire connecting member. Is a mechanism for mechanically and reliably preventing the connecting member from coming off by engaging a protrusion protruding from this by rotating the slider at a predetermined angle (for example, 90 °) around the hole of the slider member. According to this, more reliable mounting can be realized as compared with the conventional fitting type that depends on the frictional force.

Therefore, according to the present invention, the shield and the cover member are mechanically and securely attached, and they can be securely attached even under a severe use condition in which a large wind pressure is applied to them.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

First, the schematic construction of the helmet 1 will be described with reference to the side view of FIG. 6 and the front view of FIG. 7. The helmet 1 is of a so-called full-face type, and the main body 2 of the helmet 1 is an FRP or the like. The front opening 3 is made of plastic and is covered with an openable / closable shield 4 made of transparent resin. Further, inside the helmet body 2, a liner 5 made of a shock absorbing material such as Styrofoam is used.
Inside the liner 5, an inner pad 6 made of urethane foam and an inner sheet 7 made of a pile fabric of nylon or ester are stretched.

By the way, both ends of the shield 4 are rotatably attached by the shield opening / closing mechanism 10 according to the present invention. This is changed from the state shown by the solid line in FIG. The opening 3 can be opened by rotating to the state shown by.

Air intake devices 8A and 8B are provided at the upper and lower edges of the front opening 3 of the helmet body 2, and the louver-shaped air is provided at the rear lower edge of the helmet body 2. A discharge unit 9 is provided.

Details of the structure of the shield opening / closing mechanism 10 according to the present invention will be described with reference to FIGS. 1 and 2. Although the shield opening / closing mechanism 10 is provided on both sides of the helmet body 2, only one configuration will be described here.

FIG. 1 is an exploded perspective view of the shield opening / closing mechanism 10, and FIG. 2 is a front view of the shield opening / closing mechanism 10. The shield opening / closing mechanism 10 includes an under base 20 as a first base member and a second base member. 30 which is the base member of
And a slider 40 slidably engaged with the base 30
And a cap 50 that is a connecting member for attaching one end of the shield 4 to the slider 40, and a cover 60 that covers the under base 20, the base 30, the slider 40, the cap 50, and the like. It is integrally molded with resin.

The under base 20 is formed into a substantially triangular shape, and boss portions 21, 22 and 23 are respectively formed on the tops of the under base 20, and the boss portion 21 has a rectangular engaging hole 21.
a is a slit-shaped engaging hole 22 in the bosses 22 and 23.
a and 23a are formed respectively. Then, screw holes 24 and 25 are formed at both ends of the underbase 20.

Further, the base 30 is formed in a fan shape, and an arcuate guide portion 31 is projected on the base 30, and an arcuate guide groove 32 is also formed in the guide portion 31. Then, three pairs of V-shaped engaging grooves 32a, 32b, 32c are formed at appropriate places of the guide groove 32. or,
Screw holes 33 and 34 are formed at both ends of the base 30.

Further, the slider 40 is also formed in a substantially fan shape, and a screw hole 41 through which the mounting screw 11 is to be inserted is formed at one end of the slider 40.
It is attached so as to be rotatable around a mounting screw 11 which is inserted into 1. Then, the screw hole 41 of the slider 40
An arcuate slide portion 43 is formed at the tip of the forked portion 42 extending from the fork so as to connect the forked portion 42, and the slide portion 43 is slidably engaged with the guide portion 31 of the base 30. It fits. Further, columnar boss portions 44 and 45 to be engaged with the guide groove 32 of the base 30 are provided at both ends of the slide portion 43 (each tip of the forked portion 42) so as to project. The portion 44 has a keyhole-shaped engagement hole 46,
A circular hole-shaped engagement hole 47 is formed in each of the other boss portions 45. Further, a bifurcated spring member 48 is integrally formed from the boss portion 45 toward the other boss portion 44, and is formed in the guide groove 32 of the base 30 at both ends of the front end of the spring member 48. Engaging grooves 32a, 32b, 32
A protrusion 48a that selectively engages with c is formed.

A projection 49 is provided on the sliding portion 43 of the slider 40, and the projection 49 is shown in FIG.
When the protrusion 48a of the spring member 48 is engaged with the engagement groove 32c of the guide groove 32 of the base 30 as indicated by the solid line (that is, when the shield 4 is in the fully closed state).
Further, it is exposed in a state of contacting the end of the guide portion 31 of the base 30.

The cap 50 is formed into an elliptical plate shape, and projections 51 and 52 are provided on both ends of one surface thereof. One of the protrusions 51 is a protrusion to be engaged with a keyhole-shaped engagement hole 46 formed in the boss portion 44 of the slider 40. Has a wide engaging portion 51a. The other projection 52 is a projection to be engaged with a circular hole-shaped engaging hole 47 formed in the boss portion 45 of the slider 40, and this projection is formed in the same manner as the conventional one, and the tip portion thereof has a conical shape. A trapezoidal engagement portion 52a is formed. A circular hole 1 through which the projections 51 and 52 of the cap 50 are to be inserted is provided at the end of the shield 4.
4, 15 are drilled.

Further, the cover 60 is formed into a curved plate shape along the outer shape of the helmet body 2, and the back surface thereof is formed at an appropriate position (the boss portions 21, 22, 22 of the under base 20).
Protrusions 61, 62, 63 are respectively provided at the positions corresponding to the engaging holes 21a, 22a, 23a formed in 23). These protrusions 61, 62, 63 are protrusions to be engaged with the engaging holes 21a, 22a, 23a formed in the boss portions 21, 22, 23 of the under base 20, respectively. It is formed in a T shape, and a wide engaging portion 61a is formed at the tip thereof. Further, the other protrusions 62 and 63 are formed in a plate shape as in the conventional case, and key-shaped engaging portions 62a and 63a are formed at the front ends thereof, respectively.

Thus, the shield opening / closing mechanism 1 described above
The under base 20, the base 30, the slider 40, the cap 50, and the cover 60, which form 0, are assembled in the following manner.

That is, the slider 40 and the base 30 are assembled to the under base 20 in a state where the slider 40 is engaged and assembled to the base 30, and these are inserted into the screw holes 33 and 34, and the mounting screw 11 and the screw hole. Three
The helmet body 2 is fastened together with the helmet body 2 by the mounting screws 12 which are inserted through the screws 4 and 22.

Next, one end of the shield 4 is attached to the slider 4
0 from the outside and shield holes 4 and 15 of the shield 4 are aligned so that they match the bosses 44 and 45 of the slider 40.
The position of is adjusted, and when the two match, the shield 4 is attached to the slider 40 by the cap 50.

Here, the mounting capacity of the shield 4 by the cap 50 will be described. In the cap 50, first, one projection 51 is passed through the circular hole 14 of the shield 4, and then the projection 50 is centered around the projection 51 in a fixed state. The protrusion 51 is inserted into a keyhole-shaped engagement hole 46 formed in the boss portion 44 of the slider 40 while being rotated. At this time, the longitudinal direction of the engaging portion 51a formed at the tip of the protrusion 51 and the longitudinal direction of the engaging hole 46 on the slider 40 side match, and the engaging portion 51a easily passes through the engaging hole 46. ..

Next, from the above state, the cap 50 is attached to the projection 5
When rotated about 90 ° in the original direction about 1, the longitudinal direction of the engaging portion 51a of the protrusion 51 and the longitudinal direction of the engaging hole 46 are orthogonal to each other, and as shown in FIG. The portion 51a is locked to the boss portion 44 and mechanically reliably prevented from coming off from the engagement hole 46. The mechanism for rotating the cap 50 and locking the cap 50 in this manner will be referred to as a rotation lock mechanism.

When one projection 51 of the cap 50 is locked as described above, the other projection 52 of the cap 50 passes through the circular hole 15 of the shield 4 and the boss portion 45 of the slider 40. Since the protrusion 52 of the cap 50 is strongly pressed toward the boss portion 45 because it abuts against the peripheral edge of the circular hole-shaped engaging hole 47 formed in the boss portion 45, as shown in FIG. 52a is press-fitted and fitted into the engaging hole 47 on the slider 40 side.

Thus, both ends of the shield 4 are attached to the slider 40 by the caps 50. As described above, the rotation lock mechanism is used in the attachment structure of the cap 50 to the slider 40.
Since it is surely prevented from coming off from the slider 40,
The shield 4 is mechanically and reliably attached to the slider 40, and these can be reliably attached even under a severe use condition in which a large wind pressure is applied to the slider 40.

When the shield 4 is attached to the slider 40 as described above, the cover 60 is finally attached to the under base 20 by using the rotation lock mechanism as well. That is, the cover 60 is approximately 90 ° from the original mounting state.
In the rotated state, the protrusion 61 is passed through the rectangular engagement hole 21a formed in the boss portion 21 of the underbase 20. In this state, the engaging portion 6 of the protrusion 61 of the cover 60 is
Engagement hole 21a in the longitudinal direction of 1a and the side of the under base 20
And the engaging portion 61a easily passes through the engaging hole 21a.

Next, when the cover 60 is rotated about 90 ° to the attached state, the longitudinal direction of the engaging portion 61a of the protrusion 61 of the cover 60 and the longitudinal direction of the engaging hole 21a on the side of the under base 20 are orthogonal to each other. Therefore, the protrusion 61 of the cover 60 engages with the boss portion 21 of the under base 20, and the protrusion 61
The removal from the under base 20 can be reliably prevented mechanically.

When the cover 60 is rotated to the attached state as described above, the remaining protrusions 62 and 63 of the cover 60 are boss portions 22 and 23 of the under base 20.
The slit-shaped engaging holes 22a and 23 formed in the respective
When the protrusions 62 and 63 of the cover 60 are located at a position and are pressed from the outside toward the boss portions 22 and 23 of the underbase 20, the protrusions 62 and 63 have the slit-shaped engaging holes 22a on the underbase 20 side. 23a is fitted and locked, and thus the cover 60 is attached to the underbase 20.

Since the rotation lock mechanism is also used for attaching the cover 60 as in the case of attaching the cap 50, even if a large wind pressure is applied to the cover 60, it can be attached securely. it can.

The shield opening / closing mechanism 10 is assembled in the above manner. In the shield opening / closing mechanism 10, the protrusion 48a of the spring member 48 of the slider 40 is engaged with the engaging groove 32c as shown by the solid line in FIGS. , The shield 4 is in the fully closed state as shown by the solid line in FIG.
9 is exposed in a state of contacting the end surface of the guide portion 31 of the base 30.

Next, when opening the shield 4, the rider may hold the shield 4 and push it up. At this time, the protrusion 4 formed on the spring member 48 of the slider 40.
8a is removed from the engaging groove 32c of the guide groove 32 and the guide groove 3
2, the projection 49 formed on the slider 40 is buried under the guide portion 31 of the base 30 and moves in the direction of the arrow as shown in FIG. Rotate upward around 11 Thus, the opening force required for the rider to push up the shield 4 is the spring member 48 of the slider 40.
The protrusion 48a provided on the engaging groove 32c of the guide groove 32.
In addition to the force required to remove the protrusion, a force required to bury the protrusion 49 below the guide portion 31 of the base 30 (the guide portion 31 gets over the protrusion 49) is required, so that the value becomes high and high speed is achieved. Even if the rider turns around while driving, the closed shield 4 does not easily open.

When the protrusion 48a of the spring member 48 of the slider 40 is engaged with the engagement groove 32b of the guide groove 32, the shield 4 is attached to the front opening 3 of the helmet body 2.
When the lower part of the shield is slightly open and the protrusion 48a is engaged with the engaging groove 32c of the guide groove 32, the shield 4 is in the fully open state as shown by the chain line in FIG.

[0035]

As is apparent from the above description, according to the present invention, the first and second base members are attached to the helmet body, and the slider member engaging with the second base member is rotatably attached to the helmet body. First and second base members are cover members that are pivotally attached to each other and that attach an end portion of the shield that covers the front opening portion of the helmet body to the slider member by a connecting member and that are attached to the first base member.
In a shield opening / closing mechanism of a helmet configured to cover a slider member or the like, since a rotation lock mechanism is used for attaching the connecting member to the slider member and / or attaching the cover member to the first base member, the shield and the cover are provided. The members are mechanically and securely attached, and even under severe usage conditions in which a large wind pressure is applied to them, it is possible to securely attach these members.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a shield opening / closing mechanism according to the present invention.

FIG. 2 is a front view of a shield opening / closing mechanism according to the present invention.

FIG. 3 is a cross-sectional view showing a mounted state (rotation lock mechanism type) of the cap.

FIG. 4 is a cross-sectional view showing a mounted state (fitting type) of the cap.

FIG. 5 is a partial perspective view showing a mechanism (projection) for increasing the initial opening force of the shield.

FIG. 6 is a side view of the helmet.

FIG. 7 is a front view of the helmet.

[Explanation of symbols]

 1 Helmet 2 Helmet Main Body 4 Shield 10 Shield Opening / Closing Mechanism 20 Under Base (First Base Member) 30 Base (Second Base Member) 40 Slider (Slider Member) 50 Cap (Coupling Member) 60 Cover

Claims (1)

[Claims] 1. A shield that attaches first and second base members to a helmet body, pivotally pivotally attaches a slider member that engages the second base member to the helmet body, and covers a front opening of the helmet body. In the shield opening / closing mechanism of the helmet, the end portion of is attached to the slider member by a connecting member, and the cover member attached to the first base member covers the first and second base members, the slider member, and the like. A shield opening / closing mechanism for a helmet, wherein a rotation lock mechanism is used for attaching the connecting member to the slider member and / or attaching the cover member to the first base member.