JP2000144516A - Shield-attaching structure of helmet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the strength of a cover, to make the attaching and detaching operation of a shield become simple and reliable, and to prevent noise from being emitted. SOLUTION: When this helmet has (A) a shield 2 having holding parts 19 on its right and left end parts which is removably installed through attachment components 5 each having a shield-holding part 17 on both right and left outsides of a helmet body 1 and (B) covers 3 for covering both attachment components 5 and coupled parts 19, each cover 3 has an opening 22 for operating the part 17, placed in correspondence with the part 17 of the component 5, and has an operating member 23 capable of both shutting the opening 22 and operating the part 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a helmet shield mounting structure.

[0002]

2. Description of the Related Art In general, a helmet, such as a helmet for a motorcycle, is provided with a shield for opening and closing a front opening so as to be rotatable by a predetermined angle in a vertical direction, and is used in rainy weather, fine weather, on-road, off-road and the like. In such a case, it is known that the shield can be replaced easily and in a short time (see Japanese Patent Application Laid-Open No. 6-57510 and Japanese Patent No. 2702397).

A shield mounting structure for a helmet disclosed in Japanese Patent Application Laid-Open No. 6-57510 discloses a helmet shield mounting structure in which both right and left ends of a shield are removably fitted to left and right outer surfaces of a helmet body via a substrate and a rotating arm. An elastically deformable cover plate that covers the substrate and the rotating arm from the outside. When the shield is rotated downward so as to close the front opening of the helmet body, the substrate contacts the shield side end. When the shield is pivoted upward to open the front opening, the cover plate elastically abuts the shield side end to prevent the disengagement. ing.

When the shield is detached from the helmet body, the cover plate is pressed against the side end of the shield against the elastic force of the cover plate while the shield is rotated upward as described above. Then, the cover plate is elastically bent outward to forcibly release the fitting of the shield side end to the rotating arm. Also, Japanese Patent No. 270
The helmet shield mounting device disclosed in Japanese Patent No. 2397 is provided with mounting members on both left and right outer surfaces of a helmet main body, and locking portions formed on both left and right ends of the shield are detachably mounted on the mounting members. The shield is rotatable in a vertical direction by a predetermined angle, and an ear cover (cover body) is provided to cover the mounting member and the locking portion, and the ear cover engages and disengages the locking portion of the shield with respect to the mounting member. An operating portion is provided, and the engaging / disengaging operating portion is configured to be elastically bent in the front and back directions by forming a substantially U-shaped slit in the ear cover.

When the shield is to be removed from the helmet main body, the locking part is attached by pressing the engaging / disengaging operation part from the outside while rotating the shield upward and opening the front opening of the helmet main body. It can be released from the mounting member by disengaging from the locking piece of the member and pulling the shield forward.

[0006]

In the former of the prior art, when removing the shield, it is necessary to bend the cover plate outward at the shield-side end to unlock the cover plate. There is a possibility of breakage due to weak strength, and there is a problem in operability of unlocking. Further, in the latter case of the prior art, a substantially U-shaped slit is provided in the ear cover, and a part of the ear cover is used as an engaging / disengaging operation portion. Therefore, the structure is simple. Flows into the inside of the ear cover and generates noise.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object to secure the strength of a cover body, to easily and reliably engage and disengage a shield, and to prevent noise. It is an object of the present invention to provide a helmet shield mounting structure that can be achieved.

[0008]

According to the present invention, the following technical measures are taken to achieve the above object. That is,
The present invention provides a shield having engagement portions at both left and right ends on both left and right outer surfaces of a helmet main body so as to be disengageable via an attachment member having a shield engagement portion, wherein the attachment member and the engagement portion are provided. In a helmet provided with a cover body to cover, the cover body is provided with an opening for operating a locking portion corresponding to a shield locking portion of the mounting member, and the opening can be closed and the shield locking is performed. It is characterized in that an operation member capable of operating the unit is provided.

In this case, by pushing the operating member, the engagement between the engaging portion on the shield side end and the shield engaging portion on the mounting member side can be released, and the shield is pulled out and removed. Can be. When the engaging portion of the shield side end is engaged with the shield locking portion of the mounting member,
Whether the engagement can be performed by pushing the operation member,
Alternatively, by inserting the shield-side end into the attachment member, the engagement portion can be automatically engaged with the shield engagement portion.

According to the present invention, the locking portion operation opening provided in the cover body is closed by the operation member except at least when the operation member is pushed, that is, when the shield is attached to or detached from the helmet body. Therefore, air does not flow in from the opening at the time of high-speed running, so that no noise is generated. Further, since it is not necessary to bend the cover body, sufficient strength can be secured, there is no possibility of breakage, and operability is good.

Further, according to the present invention, the peripheral end surface of the opening for operating the locking portion is an inclined surface having a smaller opening area from the inside to the outside of the cover body, and the operating member is inserted into the opening from the inside. It is characterized in that it is fitted so as to close it, and the shield locking portion can be operated by pushing the operation member from the outside to the inside. According to this configuration, the opening can be closed like a hermetic plug with the peripheral end surface of the operation member being the same inclined surface as the peripheral end surface of the opening, and the flow of air can be prevented to prevent the generation of noise.

The operating member is always urged in a direction to close the opening, so that when the operating member is pushed and then its pressing force is released, the operating member is automatically released. , The opening is reliably closed, and the sealed state can be maintained. Further, the present invention provides
It is characterized in that the operating member is slidably provided along the inner or outer surface of the cover body, and an operating surface of the operating member facing the shield locking portion is inclined in the sliding direction. . In this case, by pushing (advancing) the operating member in a direction toward the shield locking portion, the inclined operation surface of the operating member comes into contact with the shield locking portion, and the shield locking portion engages with the mounting member. The shield is pushed away in the direction away from the mating portion, and the locking portion is disengaged from the engaging portion, so that the shield can be pulled out and removed. The opening can be always closed by an operation member. The operation member can automatically perform the retreat operation by an elastic member such as a spring.

Further, according to the present invention, a part of the operation member may be
It is also characterized in that it bulges from the outer surface of the cover body. According to this configuration, visual or contact confirmation of the operation member is easy and operation is easy.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 12 show a first embodiment of a helmet shield mounting structure according to the present invention. In the drawings, 1 is a helmet body, 2 is a shield, and 3 is a cover body (also referred to as an ear cover). The helmet body 1 is provided with an opening 1A on the front surface thereof, and the opening 1A is opened and closed by a shield 2.
Further, the helmet body 1 is provided with the shield mounting shaft portions 4 projecting symmetrically on the left and right sides thereof,
A fitting concave portion 6 of the shield mounting member 5 is formed, and a slit 7 for retaining the mounting member, which is concentric with the axis of the shaft portion 4 and has an arc shape, is provided above the concave portion 6. The rotation mechanism 5 is provided in a range where the rotation of the rotation mechanism 5 is not prevented, and a moderation mechanism member mounting opening 8 is provided below the recess 6 (see FIGS. 2 and 12).

The shield mounting shaft 4 is hollow and has an outer end whose diameter is reduced to form a cover locking portion 9 and a rectangular fitting hole 10 for inserting a cover locking projection. A locking projection 11 formed on the back surface of the cover 3
(See FIGS. 2 to 5). A cover fixing hole 13 is provided below the concave portion 6 of the helmet body 1 (see FIGS. 1 and 2).

A moderation mechanism member 15 having a wavy uneven surface 14 on the upper surface (on the side of the shield mounting shaft 4) is fitted in the mounting opening 8 formed in the lower portion of the helmet body 1. A recess 16 is formed deeper in the fitting recess 6 above and behind the opening 8 so that a sufficient engagement / disengagement stroke can be given to a shield locking portion 17 described later (FIGS. 2 and 5). 3). A notch 18 is provided above the rear end of the retaining slit 7 of the helmet body 1.
Is provided so that the mounting member 5 can be easily assembled (see FIG. 2).

As shown in FIG. 5, the shield 2 has narrower left and right end portions to form bifurcated engagement portions 19, 19, which are engaged with opposite side surfaces of the engagement portion 19 at both ends. Recess 2
Reference numerals 0 and 20 are provided at symmetrical positions, so that the shield mounting shaft portion 4 of the helmet main body 1 can be fitted between the two engaging portions 19 so as to be freely detachable. The cover body 3 has a fixing pin 21 provided on the back surface thereof in a protruding manner corresponding to the fixing hole 13 of the helmet body 1 (see FIG. 9). An opening 22 for engaging and disengaging the shield locking portion is formed corresponding to the concave portion 16 provided in the fitting concave portion 6, and an operation member 23 for engaging and disengaging the shield locking portion 17 described later is formed. The opening 22 is mounted so as to close it from the back side (see FIGS. 6 to 11).

The opening 22 has a substantially elliptical shape as shown in FIGS. 6 and 7, and its peripheral end face 22A has a continuous opening area from the back side (inside) to the front side (outside) of the cover body 3. An inclined surface (tapered peripheral edge) is reduced (see FIGS. 8 and 9). The operating member 23 has a circular shape when viewed from the front, and has an inclined surface (tapered surface) so that an outer peripheral edge 23A fits into the opening 22. The opening 22 is sealed. It can be closed. The operation member 24 is located on the front side (the outer side surface 23).
B) is bulged so as to slightly protrude from the opening 22 so that it is easy to see from the outside and can be easily recognized when touched by hand.

Further, the operating member 23 is provided with a projection 23C on its back surface (inside) for pushing the shield locking portion 17 toward the helmet main body 1, and an elastic member such as a spring plate (having a restoring property and an urging force). Mounting piece 24)
It has. When the operation member 23 is formed of a synthetic resin material, the attachment piece 24 is integrated by insert molding.

On the rear surface of the cover body 3, a gate-shaped mounting portion 25 is provided, which is positioned obliquely below the front side of the opening 22 and through which the mounting piece 24 of the operating member 23 can be inserted. A wedge-shaped locking projection 26 for fixing the mounting piece 24 is provided in a row (see FIGS. 7, 9 and 11). An engagement hole 27 into which the locking projection 26 fits is provided at an end 24A of the mounting piece 24.

Therefore, the operating member 23 is urged by the elasticity of the mounting piece 24 so as to be pressed against the peripheral edge surface 22A of the opening 22, and is pushed by the air pressure during high-speed running, so that the opening 22 is pressed. Is not opened, and no air flows in from the opening 22, so that no noise is generated. The front end edge of the cover body 3 allows the shield 2 to be inserted, and a gap is formed between the cover body 3 and the helmet main body 1 so that the shield 2 can be turned only within the turning range of the shield 2. As shown in FIG.

The mounting member 5 is substantially disk-shaped and has a shaft hole 28 for fitting to the shield mounting shaft portion 4 at the center, and as shown in FIG. L-shaped projection 2 that falls up and down on the side of hole 28
9, 29 are protruded (see FIG. 4), and a projection-like moderation mechanism projection 30 is formed on the lower side. The shield locking portion 17 is formed at a position.

That is, the upper and lower protrusions 29 formed on the mounting member 5 serve as a guide when the engaging portion 19 of the shield 2 is inserted and removed between the protrusions 29, and the shield 2
When the shield 2 is rotated in the vertical direction, the mounting member 5 is rotated around the axis of the mounting shaft portion 4. Then, the shield locking portion 17
Is integrally formed with the mounting member 5, but as shown in FIGS. 2 and 3, a vertically extending locking piece 31 is formed by three connecting rods 32 having flexibility (elasticity). The pushing operation piece 33 is connected to the locking piece 30 and protrudes from the rear center thereof. The length of the locking piece 31 in the vertical direction is slightly smaller than the distance between the bottoms of the engagement recesses 20 of the shield 2, and the width in the front-rear direction is larger than the width in the front-rear direction of the front-rear engagement recess 20. The locking piece 31 is slightly narrowed so that both ends of the locking piece 31 are fitted into the engagement recess 20. The front side of the locking piece 31 has a low inclined surface 31A on the insertion side of the shield 2 (the side of the fitting shaft hole 28), and when the shield 2 is inserted, the engaging portion 19 engages the inclined surface 30A. It is depressed (see FIG. 3).

However, as shown in FIGS. 1 and 2, when the shield 2 closes the front opening 1A of the helmet main body 1 (front position), the back surface of the shield locking portion 17 and the surface of the fitting concave portion 6 are closed. Since only a gap for rotating the mounting member 5 is provided between them, the shield locking portion 17 does not move, and therefore, the operation of attaching and detaching the shield 2 cannot be performed. Shield 2
There is no accidental or natural detachment from the attachment member 5 of the helmet body 1.

The range of rotation of the mounting member 5, ie, the shield 2
The vertical rotation range (opening / closing of the opening 1A) is restricted by both ends of the wavy uneven surface 14 of the moderation mechanism member 15. The lower limit of the shield 2, that is, the fully closed position in front, is shown in FIG. 1, and the upper limit of the shield 2, that is, the fully open position is shown in FIG. In the fully opened position of the shield 2, as shown in FIG. 12, the shield locking portion 17 of the mounting member 5 matches the concave portion 16 of the helmet body 1 and the operating member 23 attached to the cover body 3. When the operating member 23 is pushed inward from the outside toward the inside against the elasticity of the mounting piece 24, the locking piece 31 is disengaged from the engaging portion 19 of the shield 2 and the shield 2 can be pulled out. Becomes

In addition, a stopper 34 is provided at the upper part of the mounting member 5 so as to correspond to the slit 7 and to be locked on the outer peripheral back surface. This stopper 34
Can be inserted through the cutout 18, but cannot be easily pulled out. In particular, when the shield 2 shown in FIG. 2 is fully closed, the mounting member 5 never comes out. ing.

Next, the operation of attaching and detaching the shield 2 to and from the helmet body 1 in the first embodiment will be described. First, when the shield 2 is mounted on the helmet body 1, the locking shaft portion 12 of the cover body 3 is inserted into the fitting hole 10 of the shield mounting shaft portion 4 and rotated left or right.
The fixing pin 21 is inserted into the cover fixing hole 13 of the helmet body 1 and fixed.

Next, the right and left ends engaging portions 19 of the shield 2
The upper and lower protrusions 29 formed on the mounting member 5 are inserted as guides between the helmet body 1 and the cover body 3 so as to sandwich the shield mounting shaft portion 4 from above and below. At this time, the engaging portion 19 of the shield 2 pushes down the inclined surface 31 </ b> A on the locking piece 31 of the shield locking portion 17 against the elasticity of the connecting rod 32 to enter, and the engaging concave portion 20 and the locking piece 31 are engaged. When the both ends match, the locking piece 31 rises and returns due to the elasticity of the connecting rod 32, engages and engages with the engaging concave portion 20, and the shield 2 is automatically locked.

Then, by rotating the shield 2 in the direction of arrow B in FIG. 2, the shield 2 pushes the protrusion 29 formed on the mounting member 5 in the direction of arrow B, and the moderation structural member 15 is pressed.
By rotating the attachment member 5 together with the resistance of the shield 2, the shield 2 shown in FIG. 1 can be brought into a fully closed state (front position). In the fully closed state, as described above, the shield locking portion 17 of the mounting member 5 is not located on the back side of the operation member 23 of the cover body 3 corresponding to the projection 23C. Is pressed, the engaging portion 19 of the shield 2 is pressed.
Does not come off the shield locking portion 17 of the mounting member 5.

When the shield 2 is rotated upward to open the front opening 1A of the helmet main body 1, the shield 2 may be pushed up by hand, and the opening may be adjusted by a moderation mechanism. Can be used as well. In order to replace the shield 2, when the shield 2 is pushed up by hand, the shield 2 rotates the mounting member 5 in the direction indicated by the arrow A in FIG. When the state shown in FIG. 12 is reached after reaching the (fully opened position), the shield locking portion 17 is located in the concave portion 16 of the helmet main body 1 and faces the projection 23C of the operating member 23 provided on the cover body 3.

Next, when the operating member 23 is pushed against the helmet main body 1 from the outside against the elasticity of the mounting piece 24, the shield locking part 17 enters the recess 16 and the locking piece 3
1 is disengaged from the engagement recess 20 of the shield 2,
The shield 2 can be easily removed by pulling the shield 2 obliquely upward with the operation member 23 kept pressed.

When the shield 2 is mounted on the helmet main body 1, the engaging portions 19 of both ends of the shield 2 are inserted between the helmet main body 1 and the cover body 3 as described above, so that the shield 2 can be locked with one touch. Can be done. According to the first embodiment, the shield 2 can be easily removed by pulling out the operating member 23 provided on the cover body 3 while pushing the operating member 23 in the fully open position, and the shield 2 can be connected to the helmet main body 1. It is automatically locked with one touch just by inserting it between the cover bodies 3,
Can be replaced easily and quickly. Moreover, at the front position of the shield 2, the shield 2 does not come off, and even if the operating member 23 is pressed inadvertently, the shield locking portion 17 does not move, which is extremely safe.

Further, the cover body 3 has sufficient strength to prevent breakage, and the opening 22 provided in the cover body 3 is hermetically sealed by an operating member 23 fitted to the inclined peripheral end face 22A of the opening 22. And the operating member 23 is constantly pressed against the opening peripheral edge surface 22A by the elasticity of the mounting piece 24, so that air does not flow in from the opening 22 during high-speed traveling, and therefore noise is reduced. It does not occur.

In the first embodiment, the operation member 23 is attached to the cover 3 as shown in FIG.
Inserting the end portion 24A of the mounting piece 24 into the hole 25A of the mounting portion 25 from the opening 22 side, and fitting the engaging hole 27 of the mounting piece 24 to the wedge-shaped locking projection 26, thereby simplifying the operation. Can be. The shape of the operation member 23 when viewed from the front can be elliptical, oval, circular, square, or the like.
The mounting structure of the operating member 23 including the mounting piece 24, the mounting portion 25, and the locking projection 26 can be appropriately designed and modified. Instead of the mounting piece 24, another leaf spring or coil spring having a different shape and structure is employed. A biasing force can be applied to the member 23.

FIGS. 13 and 14 show the main part of the second embodiment of the present invention. The difference from the first embodiment is that the cover 3 has an oval engaging / disengaging opening 35 and a wedge on the back. An operating member 36 having a shape operating portion 37 is provided inside the cover body 3.
It is provided so as to be slidable along the outer side surface (front / rear surface) in the direction of the locking shaft 12 and to always close the opening 35. It is exactly the same as the form.

That is, the operating member 36 is
6A is on the outer surface of the cover body 3 and is large enough to close the opening 35, and a part thereof is swelled on the surface so that it is easy to see and operate. A connecting portion 39 extending through the opening 35 inward and outward and slidable and connecting and integrating a wedge-shaped operating portion 37 is provided on the back surface of the main body portion 36A. The rear surface of the operation portion 37 is formed as an inclined surface 37A in which the locking shaft portion 12 side is lower than the cover body rear surface.

The length of the long side of the opening 35 is such that the wedge-shaped operation part 37 is
The opening 35 has a length that can provide a sufficient stroke to separate it from the engaging recess 20 of the shield 2, and the upper and lower opposing surfaces of the opening 35 are guide surfaces of the connecting portion 39. The wedge-shaped operating portion 37 has a width in the vertical direction larger than the dimension between the upper and lower opposing surfaces of the opening 35 and is separate from the connecting portion 39, and is fixed with an adhesive or a screw during assembly. It is connected and integrated with the connecting portion 39 by means.

In the second embodiment, when the shield 2 is in the fully open position, the operating member 36 is pushed in the direction of the locking shaft 12 shown by an arrow A in FIGS. The pushing operation piece 33 of the part 17 is pushed in the direction indicated by the arrow C in FIG. 14, and the locking piece 31 of the shield locking part 17 comes out of the locking recess 20 of the shield 2 and is disengaged. Therefore, the shield 2 can be easily removed by pulling it upward.

When the shield 2 is mounted on the mounting member 5, the operating member 36 is retracted in the direction shown by the arrow B in FIG. Is inserted from between the helmet body 1 and the cover body 3, as in the first embodiment.
9 is automatically engaged with the shield locking portion 17. Also,
In a state where the shield 2 is lowered to the front position, as shown by a dotted line in FIG.
6, the shield locking portion 17 is not pushed even if the operating member 36 is pushed.
The shield 2 does not come off accidentally or naturally, and is extremely safe.

According to the second embodiment, since it is not necessary to bend the cover body 3, sufficient strength can be ensured and the opening 3
5 is always closed by the operation member 36, there is no danger of noise generation, and the operation of the operation member 36 can be performed easily and smoothly. FIG. 15 and FIG.
5 shows another configuration example of the disengagement operation section of FIG.

In this case, the cover body 3 has a slit-like opening which can push the pushing operation piece 33 of the shield locking portion 17 from the outside by a coin 40 or another operating member at the fully opened position of the shield 2. 41 is provided. Also in this example, the other configuration is the same as that of the first embodiment. Although the air flowing from the opening 41 slightly generates noise during high-speed traveling, the structure is simple and the operation is easy. A sufficient strength of the body 3 can be secured.

FIG. 17 shows a modification of the mounting structure of the operation member 23. In this case, the mounting piece 24 of the operating member 23 is protruded from one end of the operating member 23 in the width direction. A laterally long mounting hole 43 is formed in a protruding end portion of the mounting piece 24 in a penetrating manner, and a mounting wall 44 protruding from the rear surface side of the cover body 3 is inserted through the mounting hole 43.
The operation member 23 is attached from the back side of the cover body 3.

In this modified example, the mounting piece 24 is
3, the mounting piece 24 can be shorter than in the case where the mounting piece 24 is protrudingly provided at one longitudinal end of the operating member (FIG. 7). For this reason, the operation member 23 can be attached to the cover body 3 in a state where the operation member 23 is more strongly urged toward the opening 22 side, and the invasion of the outside air can be more reliably prevented.

In each of the above embodiments, the engagement / disengagement operation between the engaging portion 19 of the shield 2 and the shield locking portion 17 of the mounting member 5 is possible at the fully opened position of the shield 2.
It can be configured such that the engaging / disengaging operation can be performed at the front (fully closed) position of the shield 2 or at any position. Furthermore, the engagement structure between the shield 2 and the mounting member 5 or the structure of the mounting portion member 5 is not limited to the above embodiment.

[0045]

As described above, according to the present invention, since the operating member of the shield locking portion is provided so as to close the opening provided in the cover body, the strength of the cover body is ensured and the cover body is broken. Thus, the operation of engaging and disengaging the shield is simple and reliable, and the generation of noise can be prevented.

[Brief description of the drawings]

FIG. 1 is an overall schematic perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged left side view showing a main part of the embodiment, with a cover body and a shield removed.

FIG. 3 is an enlarged cross-sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged cross-sectional view taken along line BB of FIG. 2;

FIG. 5 is a side view of the shield according to the embodiment.

FIG. 6 is a front view of the cover body in the embodiment.

FIG. 7 is a rear perspective view of the cover body.

FIG. 8 is an enlarged cross-sectional view taken along the line CC of FIG. 6;

FIG. 9 is an enlarged cross-sectional view taken along line DD of FIG. 6;

FIG. 10 is an enlarged sectional view taken along line EE of FIG. 6;

FIG. 11 is an exploded perspective view of the back surface of the cover body in the same embodiment.

FIG. 12 is an operation explanatory view of the embodiment.

FIG. 13 is a front view of a cover body showing a main part of a second embodiment of the present invention.

FIG. 14 is an enlarged cross-sectional view taken along line FF of FIG. 13;

FIG. 15 is a front view of a cover body showing another configuration example of the disengagement operation portion of the shield locking portion of the helmet.

FIG. 16 is an enlarged cross-sectional view taken along line GG of FIG.

FIG. 17 is a rear perspective view of a cover body for illustrating a modification of the mounting structure of the operation member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Helmet main body 2 Shield 3 Cover body 5 Attachment member 17 Shield engagement part 19 Engagement part 22 Opening 22A Peripheral edge surface 23 Operation member 24 Mounting piece 35 Opening 36 Operation member 37A Operation part inclined surface (operation surface) 38 Pushing Operation protrusion

Claims (5)

[Claims] 1. A shield having engagement portions at both left and right ends on both left and right outer surfaces of a helmet main body so as to be detachably engageable via an attachment member having a shield engagement portion. A helmet provided with a cover body that covers the cover member, wherein the cover body is provided with an opening for operating a locking portion corresponding to a shield locking portion of the mounting member, and the opening can be closed and the shield member is closed. A shield mounting structure for a helmet, comprising an operation member capable of operating a stop portion. 2. A peripheral end surface of the locking portion operation opening portion is an inclined surface having a smaller opening area from the inside to the outside of the cover body, and the operation member closes the opening portion from the inside. The shield mounting structure for a helmet according to claim 1, wherein the shield engaging portion is fitted so as to be able to operate the shield engaging portion by pushing the operation member from the outside to the inside. 3. The helmet shield mounting structure according to claim 1, wherein the operation member is constantly biased in a direction to close the opening. 4. The operation member is slidably provided along an inner or outer surface of the cover body, and an operation surface of the operation member facing the shield locking portion is inclined in the sliding direction. The shield mounting structure for a helmet according to claim 1, wherein: 5. The operation member according to claim 1, wherein a part of the operation member protrudes from an outer surface of the cover body.
The shield mounting structure for a helmet according to any one of the above.