JPH08120510A - Attachment for mouth shutter in full face type helmet - Google Patents

Abstract

PURPOSE: To provide a mouth-shutter attachment which can detach the helmet using a jig from its outer front side without detachment of the inner body which is fixed to the inside surface of the helmet in no anxiety of accidental falling. CONSTITUTION: The back-up base 9 having an opening 11 for holding the shutter body 10 equipped with an freely openable shutter is fixed to a hole opened on the chin guard part of helmet shell 1a and a hook part 12 is set on both sides of the edges of the opening of the back-up base. Further, an elastically flexible locking pieces are fitted near the hook 12 to inhibit the deviation of a first stopper 19 from the hook part 12 to the shutter body 10 side which is connected to the hook part 12 by the elastically flexible motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a mouse shutter device in a full face type helmet.

[0002]

2. Description of the Related Art A mouth shutter device is provided in a chin guard portion of a full-face type helmet so that outside air is introduced into the helmet so as to prevent fogging of an inner surface of a shield and eliminate heat in the helmet. By the way, the mounting structure of the mouse shutter device is such that an opening is provided in the chin guard portion of a full-face type cap body, and the shutter unit is applied from the outside of the cap body so as to close the opening, and the mouth is attached to the inside of the cap body. It is fixed by screws or other hooking means. An inner body such as a shock absorbing liner is fixed to the inside of the cap body with an adhesive.

[0003] Therefore, in the conventional structure described above, when repairs such as replacement due to breakage of the shutter unit or the like, the inner body fixed to the inner side of the cap body with an adhesive is forcibly removed. Next, remove the screw unit or other latching means and remove the damaged shutter unit from the cap, and apply a new shutter unit from the outside of the cap,
The interior is fixed with screws or other latching means, and the interior body is again fixed with an adhesive. However, since the interior body equipped inside the cap body is not attached so as to be detachable assuming the above, it is adhered and fixed only on the premise of fixing, When the inner body is removed by forcibly breaking the form, there is a risk that a problem such as damage to the inner body may occur, which is not preferable.

Therefore, in order to solve the above problems, only the opening / closing portion of the shutter unit is
There is one that can be attached to and detached from the front (outside of the helmet) with respect to the base fixed to the cap body.

[0005]

However, since the above-mentioned ones are retrofitted to the base fixed to the cap body, an extra clearance is required between the base and the opening / closing portion for attachment / detachment. Must be provided, and there is a risk that the external appearance will be impaired and the opening / closing part can easily come off when not needed. The opening / closing part (shutter mechanism) attached to the base is restricted due to space restrictions. (For example, a vertical slide type shutter mechanism may have a small depth dimension, but a rotary type cannot be adopted because a depth dimension is required by rotation in the front-rear direction.)

[0006] The present invention has been made in view of the above-mentioned problems of the prior art.
It is an object of the present invention to provide a mounting structure of a mouse shutter device which can be attached and detached with a tool from the outside front of a helmet without removing an inner body adhered and fixed to the inside of a cap, and which does not have to be inadvertently dropped.

[0007]

According to the present invention, there is provided a helmet which includes a shutter body having an openable and closable shutter provided on a chin card portion. In a full-face type helmet equipped with a structure to make a helmet, a backup base having an opening for holding a shutter body equipped with a shutter that can be opened and closed is attached and fixed to a through hole formed in a chin guard portion of a cap body constituting the helmet. A hook portion is provided on both sides of the opening edge of the opening of the backup base, and a first elastically bendable portion on the shutter body side, which is engaged with the hook portion, is provided near the hook portion from the hook portion. An elastically bendable lock piece for preventing a bending operation in a disengaging direction is provided.

The above-mentioned shutter body and backup base are molded from a synthetic resin material, and the resin-molded backup base is curved in an arc shape and fixed to a through hole formed in the chin guard from the outside of the cap body. .
To fix the backup base to the cap body, a fixing projection is provided on the backup base side, and fixing holes are formed on both sides of the window edge formed on the other cap body, and the fixing projection is formed in the fixing hole. Fit and lock to fix.

[0009]

According to the above means, the backup base is mounted and fixed from the outside of the cap into the through hole formed in the chin guard of the cap, and the shutter body is fitted to the base from the front (outside). First hook portions provided on both left and right sides of the shutter body are elastically attached to hook portions on both sides of the backup base. When the shutter body fits into the opening of the backup base, the lock piece provided at the opening edge on the base side is elastically deformed by the shutter body in a direction (upward) that does not hinder the bending operation of the first latch portion, The lock piece is elastically returned to the original position at the same time that the first hook portion elastically engages with the hook portion, and the first hook portion is prevented from moving in the direction of detaching from the hook portion. The shutter body does not fall out of the cap body (backup base) carelessly and is stably held.

When the shutter body is detached from the backup base, a shutter provided on the shutter body is opened, a special tool (shutter opener) is inserted through a gap between the shutters, and the tip of the tool is first latched. Part, and lock the first piece in the plane of the tool.
The first hooking portion is bent in a direction (upward) that does not hinder the bending operation of the hooking portion, and in this state, the first hooking portion is turned in a direction to come off the hook portion to remove the first hooking portion from the hook portion. The same operation is performed on the opposite side of the shutter body. If the first hooks on both sides are disengaged from the hooks, the shutter body is pulled forward and separated from the backup base.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a full face type helmet equipped with a mouse shutter device, 1 is a helmet main body, a window hole 2 is cut out on the front surface, and a shield 3 is attached to the front side of the window hole 2 so as to be openable and closable. A mouse shutter device A is provided at the center of the chin guard 4 of the helmet body 1. The above-mentioned helmet body 1 is composed of a cap 1a molded into a full face type from a fiber-reinforced resin material, an impact absorbing liner attached inside the cap 1a, and an interior 1b composed of a sponge cushion and the like. And cap body 1a
A chin guard 5 made of a shock absorber is provided on the inside of the chin portion.

The front surface of the shock absorber constituting the chin guard 5 is notched by a predetermined depth, and a space 6 is provided between the front surface and the cap body 1a.
A through hole 7 is formed in the cap 1a facing the space 6, and a mouse shutter device A is mounted over the through hole 7 and the space 6. The through hole 7 formed in the cap body 1a is formed in a horizontally-long rectangular shape at the bottom of a concave portion in which the center of the chin guard portion 4 of the cap body 1a is recessed inward, and both edges of the through hole 7 are formed. A fixing hole 8 for fixing a backup base, which is a constituent member of a mouse shutter device A described later, is opened outward.

The mouse shutter device A comprises a backup base 9 fitted and fixed in a through hole 7 formed in the central portion of the chin guard portion 4 of the cap body 1a, and a shutter body 10 assembled to the backup base 9. The backup base 9 and the shutter body 10 are made of synthetic resin material. The backup base 9 is formed in a laterally long quadrangular frame body that abuts and engages with the outer surface of the hole edge of the through hole 7 described above, and an opening 11 is provided inside thereof.
Hook portions 12 are formed on the left and right side edges of the opening 11, and a mounting piece 13 is formed on the vertical frame rod on which the hook portions 12 are formed so as to protrude rearward and laterally to be the same body. A fixing projection 14 fitted and fixed in the fixing hole 8 and a cap body thickness adjusting boss 15 are protrudingly provided on the front surface of the mounting piece 13.
A lock piece 16 having a substantially U-shaped cross section is provided on the backup base 9 in the vicinity of the hook portion 12, that is, in a portion near the vertical frame rod of the upper horizontal rod orthogonal to the vertical frame rod provided with the hook portion 12.
Is formed integrally through the lower side of the upper horizontal rod toward the rear, and the rear end of the lock piece 16 is elastically bent in the vertical direction.

The shutter body 10 is formed into an arcuate shape in which a recess formed in the chin guard portion 4 of the cap body 1a is substantially flush with the curved surface of the cap body. A hole 17 having the same shape as or slightly smaller than the shape of the opening 11 of 9 is opened, and a shutter 18 is attached to the hole 17 so as to be openable and closable. Further, a first hooking portion 19 that fits into the opening 11 of the backup base 9 and engages with the hook portion 12 provided at the opening edge is formed on the outer edge in the width direction of the hole 17 in the same direction toward the rear. The protrusion is formed. Then, the first hooking portion 19 is configured to elastically bend in a direction (left and right direction in the drawing) to be engaged with and disengaged from the hook portion 12. Further, a notch 21 is formed on the upper rear end of the first hooking portion 19 so that a dedicated tool (shutter opener) 20 used when the hooking portion 19 is detached from the hook portion 12 can be stably hooked. . The special tool 20 has an elongated band shape, and has a hook 22 engaged with a notch 21 formed in the first hook 19 at one end, and a fitting hole 8 fitted in the fixing hole 8 at the opposite end. A push portion 23 for pushing the projection 14 out of the fixing hole 8 is provided.

Next, the mouse shutter device A described above is used as a cap body.
Referring to FIG. 5, the process of attaching the base 1a to the base 1a will be described. First, the backup base 9 is bent in a substantially V shape so that the mounting pieces 13 on both sides in the width direction are fitted into the through holes 7 of the cap 1a. The mounting piece 13 of the backup base 9 is positioned inside the cap 1a through the through hole 7 from the front side of the chin guard 4 of the body 1a (see a). Next, the force that has been curved into a substantially V-shape is released to elastically return to the original state, and the edge frame of the backup base 9 is brought into contact with the outer surface of the hole edge of the through hole 7.
The mounting pieces 13 on both sides in the width direction are located at the opening positions of the fixing holes 8 formed outside the both edges of the through hole 7 (see b), and the fixing projections 14 formed on the mounting pieces 13 are fixed there. It is pushed into the hole 8 from the inside of the cap 1a and fitted and fixed (see c). The dimension between the fixing protrusions 14 provided on the left and right mounting pieces 13 is such that the mounting pieces 13 are continuously connected to the frame body of the backup base 9 via the substantially U-shaped flexible portion 24. It is possible to cover the generated variations in the width direction. Further, the cap body thickness adjusting boss 15 provided on the mounting piece 13 at a position outside the fixing projection 14 in the width direction can cover variations in the wall thickness of the cap body 1a that occur during manufacturing. ing.

After the backup base 9 is fitted and fixed in the through hole 7 of the cap 1a, the shutter body 10 is inserted into the opening 11 of the backup base 9 from the front side, and the shutter body
The first hooking portions 19 projecting from the rear surfaces of the left and right sides of the 10 are inserted along both side edges in the width direction of the opening 11 (see d). And
When the shutter body 10 continues to be inserted, the first hooking portion 19 elastically engages with the hook portion 12 of the backup base 9,
The mounting of the mouse shutter device is completed (see e). At the same time when the shutter body 10 is completely assembled to the backup base 9, the lock piece 16 provided on the backup base 9 prevents the first hooking portion 19 from moving in the direction to come off the hook portion 12, that is, the first hooking portion. The lock piece 16 is located near the upper side of the stopper 19, and the movement of the first latch 19 to be detached from the hook 12 is prevented.

To remove the mouse shutter device A fixed as described above, first, the shutter 18 mounted on the shutter body 10 is rotated to fully open the hole 17 of the shutter body 10, and in this state, the special tool 20 Is inserted into the backup base 9 from the upper gap between the hole 17 and the shutter 18, and the lock piece 16 provided on the upper edge of the opening 11 of the backup base 9 on the plane of the special tool 20 is bent upward. Then, the movement prevention (lock) of the first latch portion 19 is released (see FIG. 7). In that state, the hook portion 22 of the special tool 20 is hooked on the notch portion 21 formed in the first hook portion 19 and pulled out by turning it outward, and the first hook portion 19 is released from the engagement with the hook portion 12. To do. The same operation is performed for engaging the hook portion 12 and the first hooking portion 19 on the opposite side, and the shutter body 10 is removed from the backup base 9 by releasing the engagement on both the left and right sides. Further, when removing the backup base 9 fixed to the cap body 1a, after performing the above-mentioned operation to remove the shutter body 10, a special tool from the front side of the cap body 1a.
The pushing portion 23 of 20 is pushed into the fixing hole 8 to push out the fixing projection 14 provided on the mounting piece 13 of the backup base 9 from the fixing hole 8, and the same operation is performed on the other fixing hole 8.
The backup base 9 is removed from the inside of the cap 1a by removing the fixing projections 14 on the left and right sides from the fixing holes 8 and can be taken out of the cap through the through holes 7. Accordingly, the mouse shutter device A is assembled and fixed to the cap 1a, and the shutter body is
When it is necessary to remove the backup base 9 or the backup base 9, it is possible to use a special tool from the outside of the cap without removing the inner body inside the cap.

[0018]

According to the structure for mounting the mouse shutter device in the full-face type helmet of the present invention, according to the structure described in claim 1, the mouse shutter device is attached to and detached from the cap body inside the cap body. It can be performed by operating from the outside of the cap body without removing the cap.
Therefore, there is no danger of damaging or damaging the inner body, and there is no fear of damaging the coating of the cap body, which is very useful. In addition, since the shutter body fitted and engaged with the backup base is held in an engaged state by the lock pieces, there is no fear that the shutter body is accidentally dropped from the backup base.
Further, when a notch for hooking a dedicated tool is formed in the first latching portion, the operation of detaching the shutter body from the backup base using the dedicated tool can be performed smoothly. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a helmet equipped with a shutter device according to the present invention.

FIG. 2 is an enlarged sectional view taken along line (2)-(2) of FIG.

3 (a)-(a) line of FIG. 2 and (b)-(b).
It is a longitudinal cross-sectional view along a line.

FIG. 4 is an exploded perspective view of the mouse shutter device.

FIG. 5 is a process diagram showing a procedure for incorporating a shutter device into a cap body.

FIG. 6 is a perspective view showing a special tool.

FIG. 7 is a cross-sectional view showing a state in which a lock piece that holds an engaged state between the first hooking portion and the hook portion is released.

FIG. 8 is a cross-sectional view showing a state in which the first hook and the hook are disengaged from each other.

FIG. 9 is a cross-sectional view showing a state in which the fixing protrusion of the backup base is removed from the fixing hole of the cap body.

[Explanation of symbols]

 A: Mouse shutter device 1: Cap body 4: Jaw guard 7: Through hole 8: Fixing hole 9: Backup base 10: Shutter body 11: Opening 12: Hook 14: Fixing projection 16: Lock piece 18: Shutter 19: First latching section 20: Special tool 21: Notch

Claims (2)

[Claims] 1. A full-face helmet having a structure for introducing outside air into a helmet through a shutter body having an openable and closable shutter provided on a chin card portion, wherein a chin guard portion of a cap body constituting the helmet is provided. A backup base having an opening for holding a shutter body equipped with an openable and closable shutter is mounted and fixed to the opened through-hole, and hook portions are provided on both sides of the opening edge of the opening of the backup base. And an elastically bendable lock piece for preventing the first elastically bendable latch on the shutter body side engaged with the hook portion from bending in a direction away from the hook portion. Characteristically, the mounting structure of the mouse shutter device in the full face type helmet. 2. A first shutter provided on the shutter body side.
2. The mouse shutter device for a full-face helmet according to claim 1, wherein the hook portion has a notch portion for hooking a tool used when the hook portion is elastically bent and detached from the hook portion. Mounting structure.