JPH0634334Y2 - Shield mounting structure for helmet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a shield mounting structure for a helmet.

(Prior Art) For example, as a disclosure of a structure for attaching a shield to a cap body, there is one disclosed in Japanese Utility Model Publication No. 55-51780. As shown in FIG. 8, the disc 43 is rotatably fitted in the circular hole 42 of the annular disc 41, and the wavy uneven portion 44 is formed on the inner peripheral surface of the circular hole 42. A corrugated concavo-convex portion 45 is formed on the outer peripheral surface of the corrugated concavo-convex portion 44 so as to engage with and disengage from the corrugated concavo-convex portion 44. , 47 are formed, the shield 48 is arranged outside the annular disc 41 and attached to the annular disc 41, the shield 48, the disc 48 penetrating the shield 48, the disc 43 and the cap body through the pin 49. 43
Is pivotally attached to the cap body, and the disc 43 is fixed to the cap body with a pin through the hole 50. In the above configuration, the shield 48 is pin 49
When it is turned around, the shield 48 is allowed to rotate due to elastic deformation of the uneven portions 44 and 45, and the rotation of the shield 48 is restricted by the mutual engagement of the uneven portions 44 and 45 to restrict the shield 48. Can be stopped at a desired position.

(Problems to be Solved by the Invention) In the conventional device, the shield 49 and the disc 43 are provided.
, Was pivotally attached to the cap body by a pin 49 penetrating both, and the shield 49 and the like could not be replaced. Therefore, in order to enable replacement of the shield 48, a head mounting screw is adopted instead of the pin 49, and the mounting screw penetrates the shield 48 and the disc 43 from the outside and is screwed to the cap body. However, since the annular disc 41 and the disc 43 are arranged between the shield 48 and the cap body, the head of the mounting screw comes into contact with the shield 48, and the shield 48 rotates. If the mounting screw is loosened due to the operation or the mounting screw is strongly tightened, problems such as the shield 48 not being able to rotate properly occur.

Further, in order to allow the elastic deformation of the uneven portions 44, 45, the long holes 46,
Although 47 is formed, since both circumferential sides of the uneven portions 44 and 45 are continuous with the annular disc 41 and the disc 43, respectively, the uneven portions 44 and 45 are less likely to be elastically deformed, and therefore the shield 48 The turning operation could not be performed well.

In view of the above problems, the present invention provides a helmet in which the shield can be rotationally restricted at a predetermined position, the shield is detachable, and the shield can be favorably rotated. An object is to provide a shield mounting structure.

(Means for Solving the Problem) The technical means taken by the present invention to achieve the above-mentioned object is a helmet provided with a shield 3 rotatably attached to the cap body 2, in which the side of the cap body 2 is provided. A corrugated corrugated surface 3 in the circumferential direction is formed on the inner peripheral surface of the ring body 8 whose one end in the axial direction abuts on the outer surface of the part, and a flange portion 9 which abuts the outer surface of the cap body 2 on the one end in the axial direction of the ring body 8. A fitting hole 6 is provided in the mounting portion of the shield 3 so as to be fitted to the ring body 8 from the outside so as not to rotate relative to the ring body 8. The fitting hole 6 is located on the outer surface side of the mounting portion of the shield 3. A head 14 that prevents the ring body 8 from coming off,
The ring body 8 has a support body 13 that is fitted into the ring body 8 from the outside so as to be rotatable relative to the ring body 8 and that has a boss portion 15 that abuts the outer surface of the cap body 2. It is attached and fixed to the cap body 2 with a mounting screw 22 penetrating from the outside, and a rotation preventing means for the boss portion 15 is provided between the support body 13 and the cap body 2, and the boss portion 15 of the support body 13 is cantilevered. The elastic piece 20 is provided at the tip of the elastic piece 20 having an engaging portion 21 that engages with the concave-convex surface 12 on the inner peripheral surface of the ring body 8 in a detachable manner to regulate the rotation of the shield 3. .

(Operation) To attach the shield 3 to the cap body 2, the ring body 8 provided in the attachment portion of the shield 3 is fitted into the boss portion 15 of the support body 13, and the support body 13 is attached so as to penetrate the boss portion 15. Attach to the cap body 2 with the screw 22. At this time, the boss portion 15 of the support body 13 is attached to the cap body 2.
Since it abuts against, even if the mounting screw 22 is strongly tightened,
The ring body 8 or the shield 3 cannot be pressed against the cap body 2 more than necessary.

Further, when the shield 3 is rotated, the elastic piece 20 is elastically deformed by being pressed by the corrugated surface 12 of the ring body 8 and the shield 3 is allowed to rotate together with the ring body 8. The engagement of 21 with the uneven surface 12 restricts the rotation of the shield 3 and the ring body 8. At this time, since the elastic piece 20 is cantilevered, it elastically deforms relatively easily.

Further, since the rotation preventing means is provided between the support body 13 and the cap body 2, the mounting screw can be attached by the engagement of the concave-convex surface 12 and the engaging portion 21 of the elastic piece 20 by the rotating operation of the shield 3. 22 is not relaxed.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings shown in FIGS. 1 to 7.

In the figure, reference numeral 1 denotes a half-type helmet, which comprises a cap body 2 and a shield 3. A collar 4 is integrally formed on the lower front portion of the cap body 2, and the shield 3 is curved along the collar 4. Further, mounting holes 23 are formed on both left and right sides of the cap body 2, and bushes 25 having screw holes 24 are formed in the mounting holes 23.
Are engaged with each other, and an engaging hole 26 is formed near the mounting hole 23.

As shown in FIGS. 1 to 3, both left and right sides of the upper portion of the shield 3 are mounting portions 5, and a circular fitting hole 6 is formed in the mounting portion 5, and the fitting hole 6 has a radial direction. A pair of engagement grooves 7 are formed at symmetrical positions.

Reference numeral 8 denotes a synthetic resin ring body, and as shown in FIG. 6, a flange portion 9 that abuts on the inner surface of the attachment portion 5 of the shield 3.
And a cylindrical tube portion 10 fitted inside the fitting hole 6. On the outer peripheral surface of the cylindrical portion 10, a pair of engaging protrusions 11 that fit into the engaging grooves 7 of the fitting holes 6 are formed, so that the ring body 8 can be rotated integrally with the shield 3. There is. Also, the cylinder
A corrugated concavo-convex surface 12 is formed on an inner peripheral surface 10a of the corrugated surface 10, and the concavo-convex surface 12 has a plurality of arcuate concave portions 12a (three in this embodiment). Further, the flange portion 9 of the tubular portion 10
The protruding length from the outer side surface is formed to be slightly longer (or the same size) than the thickness of the shield 3.

Reference numeral 13 denotes a synthetic resin support, which is located outside the mounting portion 5 of the shield 3 and, as shown in FIGS. 5 and 7, a circular head 14 that abuts the outer surface of the mounting portion 5 of the shield 3. The circular head 14 is provided with a boss portion 15 projectingly provided on the inner surface of the circular head 14 and the ring body 8 is rotatably fitted on the outer surface thereof. A screw insertion hole 16 penetrates through the central portion of the support body 13. Has been formed. A circular recess 17 is formed on the outer surface of the circular head 14, and a fan-shaped hole 18 is formed therethrough. The boss portion 15 is provided in a portion other than the portion where the hole 18 of the circular head portion 14 is formed and has a C shape, and the protruding length from the inner surface of the circular head portion 14 is the same as the thickness of the entire ring body 8. It is dimensioned.
Further, on the inner surface of the boss portion 15, an engagement protrusion 19 which is fitted into the engagement hole 26 of the cap body 2 is formed. The engagement protrusion 19 and the engagement hole 26 form a rotation stopping means.

Reference numeral 20 denotes an elastic piece, which is integrally extended from the boss portion 15 in an arc shape along the inner peripheral surface of the ring body 8, the outer portion is located in the hole 18 of the circular head 14, and the inner portion is the circular head. 14 It is projected from the inner surface. Further, the elastic piece 20 is cantilevered so that the tip end side thereof can be elastically deformed relatively easily, and the tip end portion thereof has an arcuate engagement which engages with the recess 12a of the uneven surface 12 of the ring body 8. The part 21 is formed.

Reference numeral 22 denotes a mounting screw, which has a circular head portion 22a that fits into the recess 17 of the support 13.

In the above structure, in order to attach the shield 3 to the cap body 2, the tubular portion 10 of the ring body 8 is fitted into the fitting hole 6 of the attachment portion 5 of the shield 3 from the inside, and the tubular portion 10 is also supported. It is fitted onto the boss portion 15 of. Then, the engaging protrusion 19 of the support body 13 is fitted into the engaging hole 26 of the cap body 2 and the mounting screw 22 is attached to the support body.
It is inserted into the screw insertion hole 16 of 13 from the outside and screwed into the screw hole 24 of the bush 25 provided in the cap body 2. At this time, even if the inner surface of the boss portion 15 of the support body 13 is brought into contact with the cap body 2 and the mounting screw 22 is strongly tightened, the ring body 8 is not pressed against the cap body 2 more than necessary.

Further, when the shield 3 is in the state shown by the solid line in FIG. 4, the engaging portion 21 of the elastic piece 20 engages with the recess 12a at the lower end of the uneven surface 12 as shown in FIG. The rotation of is regulated. Then, when the shield 3 is pushed up,
Since the support body 13 is fixed to the cap body 2 and the ring body 8 rotates integrally with the shield 3, the engaging portion 21 is pressed by the uneven surface 12 and the elastic piece 20 elastically deforms, and together with the ring body 8 the shield 3 is shielded.
Is allowed to rotate. At this time, since the support body 13 is prevented from rotating with respect to the cap body 2, the mounting screw (22) is not loosened by the rotation of the ring body 8 (rotation when lowering the shield 3). Then, by engaging the engaging portion 21 of the elastic piece 20 with the concave portion 12a at the middle portion or the upper end portion of the uneven surface 12, the shield 3 can be stopped at the position shown by the phantom line in FIG. .

The present invention may be applied to a jet type or full-face type helmet.

(Effect of the Invention) According to the present invention, the corrugated corrugated surface 3 in the circumferential direction is formed on the inner peripheral surface of the ring body 8 whose one end in the axial direction abuts on the outer surface of the side portion of the cap body 2, and the corrugated surface 3 of the ring body 8 is formed. A flange portion 9 that comes into contact with the outer surface of the cap body 2 is provided at one end side in the axial direction, and a fitting hole 6 that is fitted to the ring body 8 from the outside so as not to be rotatable relative to the ring body 8 is formed in a mounting portion of the shield 3. A head 14 positioned on the outer surface side of the attachment portion of the shield 3 to prevent the shield 3 from coming off from the ring body 8 and the cap body 2 fitted inside the ring body 8 so as to be relatively rotatable from the outside. It has a support body 13 having a boss portion 15 which comes into contact with the outer surface, and the boss portion 15 of this support body 13 is attached and fixed to the cap body 2 by a mounting screw 22 penetrating from the outside and at the same time, the support body 13 And a cap body 2 is provided with a rotation stopping means for the boss portion 15, and the boss portion 15 of the support body 13 is provided in a cantilevered shape and has a tip end. Since the elastic piece 20 having the engaging portion 21 that engages with the concave-convex surface 12 on the inner peripheral surface of the ring body 8 in a disengageable manner to regulate the rotation of the shield 3 is provided, the shield 3 is removable and can be replaced. Is possible, and since the boss portion 15 of the support body 13 is in contact with the cap body 2 even if the mounting screw 22 is strongly tightened,
Since the ring body 8 or the shield 3 is not pressed against the cap body 2 more than necessary, and the support body 13 is prevented from rotating with respect to the cap body 2 by the rotation preventing means, the ring body 8 together with the shield 3 is prevented. By rotating the, the corrugated uneven surface 12 of the ring body 8 and the elastic piece provided on the support body 13 side
Even when the engaging portion 21 of 20 is disengaged, the mounting screw 22 does not loosen.

Further, when the shield 3 is rotated, since the elastic piece 20 is cantilevered, the elastic piece 20 is elastically deformed relatively easily, and in combination with the above effect, the shield 3 can be rotated satisfactorily.

On the other hand, in the helmet, when the attachment portion of the shield 3 is abutted against the outer surface of the cap body 2, the other portion of the shield 3 also comes into contact with the cap body 2, and the other contact portion of the shield 3 is shielded by the shield 3.
The rotation of the arm causes damage to the cap body 2 and peels off the cap body 2. If the attachment portion of the shield 3 is too far away from the cap body 2, not only the support of the shield 3 becomes unstable, but also the shield 3 and the cap 3 A large amount of wind and rain penetrates into the inner surface of the cap body 2 from between the body 2 and the axial thickness of the ring body 8 is not sufficiently secured, that is, the corrugated uneven surface is formed.
When the thickness of the formation portion of 12 and the elastic piece 20 is thin, the wear resistance of the corrugated uneven surface 12 on the inner periphery of the ring body 8 and the engaging portion 21 of the elastic piece 20 is poor, and the elastic piece 20 is cantilevered. Therefore, the elastic piece 20 is broken at an early stage due to the repeated rotation operation of the shield 3, but in the present invention, particularly, the ring body 8 is broken.
A flange portion 9 that comes into contact with the outer surface of the cap body 2 is provided, and the fitting hole 6 of the shield 3 is fitted onto the ring body 8 from the outside so as not to rotate relative to the head portion of the support body 13 to prevent the shield 3 from coming off. Since it is made of 14, the mounting portion of the shield 3 can be separated from the cap body 2 and can be as close to the cap body 2 as possible, and moreover, the axial thickness of the ring body 8 can be sufficiently secured, and the corrugated uneven surface can be obtained. The effect that the wear resistance of 12 and the engaging portion 21 and the strength of the elastic piece 20 can be sufficiently ensured.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a main part, FIG. 2 is a side view of the same, FIG. 3 is a sectional view of the same plane, and FIG. Side view, FIG. 5 is a perspective view seen from the inside of the support, FIG. 6 is a side view of the ring body, and FIG.
FIG. 8 is a side view seen from the inside of the support, and FIG. 8 is a side view of a shield mounting structure showing a conventional example. 1 ... Helmet, 2 ... Hat body, 3 ... Shield, 8 ...
… Ring body, 12 …… Uneven surface, 13 …… Supporting body, 15 …… Boss part, 20 …… Elastic piece, 21 …… Engaging part, 22 …… Mounting screw

Claims (1)

[Scope of utility model registration request] 1. A helmet having a shield (3) rotatably attached to a cap body (2), comprising a ring body (8) whose one axial end is in contact with an outer side surface of the cap body (2). A corrugated corrugated surface (12) in the circumferential direction is formed on the inner peripheral surface, and a flange portion (9) that comes into contact with the outer surface of the cap body (2) is provided on one end side of the ring body (8) in the axial direction to form a shield (3). ) Is formed with a fitting hole (6) which is fitted to the ring body (8) from the outside so as not to be rotatable relative to the ring body (8), and the fitting hole (6) is located on the outer surface side of the attachment part of the shield (3). Shield 3
Head (14) for preventing the ring body (8) from coming out of the ring body (8), and a boss portion (14) which is fitted into the ring body (8) so as to be relatively rotatable from the outside and which abuts on the outer surface of the cap body (2). And a boss (15) of the support (13).
Is fixed to the cap body (2) with a mounting screw (22) penetrating from the outside, and a boss portion (15) rotation preventing means is provided between the support body (13) and the cap body (2). Is provided on the boss portion (15) of the support body (13) in a cantilevered manner, and the tip end portion is detachably engaged with the uneven surface (12) of the inner peripheral surface of the ring body (8). A shield mounting structure for a helmet, comprising an elastic piece (20) having an engaging portion (21) for restricting rotation of the shield 3.