JP2899588B1 - Support structure for bulletproof surface for helmet - Google Patents

Abstract

An object of the present invention is to prevent a bulletproof surface from slipping and dropping from an upper part of a head and to fix a bulletproof surface in a middle position of a moving range, and to attach the bulletproof surface to a helmet size without any inconvenience. SOLUTION: A pair of bolts 29 projecting substantially oppositely from both sides of the helmet are fixed to a band 23 which is detachably wound around and fixed to the helmet 21. In the vicinity of the base end of the bolt 29, a support plate 31 having a ridge 37 is fixed substantially vertically to the bolt 29. The bolt 29 has a plurality of recesses 49 fitted to the projections 37 and a rotation arm 45 that rotates about the bolt 29 so as to contact the support plate 31. The bulletproof surface 41 is fixed to the rotating end of the rotating arm 45. Further, an adjustment dial 51 for tightening and loosening the fitting between the convex ridge 37 and the concave ridge 49 is screwed to the bolt 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supporting a bulletproof surface for a helmet mounted on the helmet so as to be movable between the front and the head of the helmet.

[0002]

2. Description of the Related Art A bulletproof cap (hereinafter, referred to as a "helmet") is provided with a bulletproof surface for protecting a wearer's face from bullets and the like. The bulletproof surface is supported to be movable between the front of the helmet and overhead. Conventionally, the support structure of the bulletproof surface has been as shown in FIGS.

In other words, a band 3 made of a steel material (for example, stainless steel) is detachably wound around the outer periphery of the helmet 1. Bands 3 on both sides of helmet 1
Are provided with a pair of support projections 5 in the circumferential direction, respectively. The top of each support projection 5 is formed as a flat surface. The base end of the first connection plate 7 is rotatably fixed to the flat surface of one of the support protrusions 5 via a rotation shaft 9a. The base end of the second connecting plate 11 is rotatably fixed to the flat surface of the other supporting projection 5 via a rotating shaft 9b.

The leading ends of the first and second connecting plates 7 and 11 are
It is rotatably fixed to both sides of a frame 15 that holds the bulletproof surface 13 via rotation shafts 9c and 9d. That is, the bulletproof surface 13 is attached to the band 3 by a link mechanism including the first and second connecting plates 7 and 11 whose both ends are rotatable. Accordingly, the bulletproof surface 13 is moved from the front of the helmet 1 by the first and second connecting plates 7 and 11 being rotated counterclockwise in FIG. 6 around the rotating shafts 9a and 9b.
It is designed to be moved overhead (the position shown in FIG. 8).

[0005] The rotating portions at both ends of the first and second connecting plates 7 and 11 are pressed against each other so as to generate a predetermined frictional force. The bulletproof surface 13 is held at an overhead position by this frictional force and a link mechanism that reduces the moment due to the helmet load.

[0006]

However, the above-mentioned conventional structure for supporting a bulletproof surface for a helmet mainly retains the bulletproof surface moved to an overhead position by the frictional force of a rotating portion. However, the bulletproof surface is made of special resin 18m
m, and has a weight of about 1.5 kg. Therefore, the position cannot be sufficiently maintained only by the frictional force of the rotating portion. Therefore, if a slight external force or inertia force is applied, However, there was a problem of falling down from overhead.

In addition, since the link mechanism has a structure in which the moment due to the load on the bulletproof surface is reduced and held at the overhead position, the moment is large at an intermediate position in the movement range, and the bulletproof surface is held. Could not.

Further, the link mechanism supports the base ends of the first and second connecting plates by a pair of supporting projections 5 (see FIG. 7) provided side by side in the circumferential direction of the band. The circumference of the band is adjusted according to the size of the helmet. Therefore, when the circumferential length of the band increases or decreases, the curvature changes, and the relative position of the pair of support protrusions arranged in the circumferential direction is displaced. Then, when a positional displacement occurs between the support protrusions, a distortion occurs in the link mechanism, and there is a disadvantage that the link mechanism does not move smoothly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to prevent the bulletproof surface from slipping and falling from the top of the head, and to fix the bulletproof surface at a position halfway in a moving range. It is an object of the present invention to provide a support structure for a helmet bulletproof surface that can be attached without any inconvenience in response to the problem.

[0010]

According to the first aspect of the present invention, there is provided a helmet bulletproof surface supporting structure for supporting a bulletproof surface so as to cover a front side of a helmet. In the supporting structure, a band-shaped band removably wrapped around the outer periphery of the helmet, a pair of bolts fixed to the band and projecting substantially oppositely from both sides of the helmet, A ridge arranged near the base end portion is inserted so as to be rotatable around each of the bolts, and a plurality of recesses that fit with the ridges are formed radially around the bolt. A rotating arm that holds the bulletproof surface at the rotating end thereof, and an adjustment dial that is screwed to the bolt and that performs an operation of tightening and loosening the fitting between the convex ridge and the concave ridge. It is characterized by having done.

In a helmet bulletproof surface support structure for supporting a bulletproof surface so as to cover the front side of the helmet, a belt-shaped band removably wrapped around an outer periphery of a side portion of the helmet; A pair of bolts that are fixed and protrude substantially oppositely from both sides of the helmet, and are fixed to the band so as to be disposed near the base end of the bolt, and on a support surface that is substantially perpendicular to the bolts and faces outward. A support plate on which the ridges are formed, a plate piece having a receiving surface that can come into contact with the support surface of the support plate, is inserted so as to be rotatable around the bolts, and A rotating arm having a plurality of recesses which are fitted on the receiving surface and which are radially formed around the bolt, and fixed to a rotating end of each rotating arm to hold the bulletproof surface; Frame and the bolt It is engaged, characterized by comprising a an adjusting dial for Shimeyuru manipulating fitting between the said projections concave.

Further, the adjustment dial is screwed to only one of the bolts, and a nut is fixed to the other bolt so as to maintain the engagement between the convex ridge and the concave ridge. And

The pitch of the male and female screws into which the adjustment dial and the bolt are screwed is so large as to reduce the amount of rotation of the adjustment dial for tightening and loosening the fitting between the ridge and the recess. The support structure for a bulletproof surface for a helmet according to any one of claims 1 to 3, wherein the support structure is formed.

Thus, when the adjusting dial is loosened, the fitting between the ridge and the ridge is loosened, the rotation of the rotating arm is allowed, and the bulletproof surface becomes movable. As the movement of the bulletproof surface proceeds, the ridge engages with the next ridge. At this time, a click feeling and a click sound are generated. When the adjustment dial is tightened while the convex and concave portions are in the fitted state, the fitting between the convex and concave portions is tight, and the bulletproof surface is fixed at that position. In addition, since there are a plurality of concave stripes, the bulletproof surface can be fixed at a plurality of positions in multiple stages. Further, the use of the fitting of the ridge and the ridge ensures the fixing of the bulletproof surface.

In the helmet bulletproof surface support structure, if a plurality of the ridges and recesses are provided radially around the bolt, the ridges and the recesses are simultaneously formed at a plurality of locations. It is fitted, and the position holding force of the bulletproof surface increases.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a helmet bulletproof surface support structure according to the present invention will be described below in detail with reference to the drawings. 1 is a side view showing a helmet bulletproof surface support structure according to the present invention, FIG. 2 is a plan view of FIG.
FIG. 4 is a partial cross-sectional view of the bulletproof surface rotation support portion, FIG. 4 is an exploded perspective view of the bulletproof surface rotation support portion, and FIG. 5 is an enlarged side view showing the movable range of the bulletproof surface rotation support portion.

A band 23 made of a steel material (for example, stainless steel) is detachably wound around the outer periphery of the side portion of the helmet 21. The band 23 has a screw 23a rotatably provided at one end thereof and a screw groove 23b formed at the other end thereof.
Are engaged. The other end of the band 23 moves in the circumferential direction by rotating the screw 23a, so that the helmet 21
The tightening to is adjusted. The band 23 fixed to the helmet 21 is prevented from falling off in the vertical direction by the locking portion 25 provided on the helmet 21. An elastic member 2 for improving the close contact with the outer peripheral surface of the helmet 21 is provided on the inner peripheral surface of the band 23.
7 are provided.

As shown in FIG. 3, a pair of bolts 29 projecting substantially oppositely from both sides of the helmet 21 are implanted in the band 23 wound around the helmet 21. The base end of the bolt 29 becomes a flange portion 29a,
The flange portion 29a is fixed to the inner peripheral surface of the band 23. That is, the bolt 29 is fixed to the band 23 so as not to move in the axial direction and the direction around the axis.

As shown in FIG. 4, a support plate 31 having one end formed in a substantially semicircular shape is fixed to the band 23 by a fastener 33. A through hole 35 is formed in the support plate 31 at a substantially semicircular center. In the through hole 35, the bolt 2
9 is inserted. Therefore, the support plate 31 is
And the bolt 29 fixedly supported by the band 23.

A support surface 32 is formed on the outer surface of the support plate 31, and a single ridge 37 is provided on the support surface 32. The ridge 37 is formed so as to pass in the radial direction from the center of the through hole 35, that is, the center of the bolt 29. The ridge 37 according to this embodiment has a substantially semicircular cross section in a direction perpendicular to the longitudinal direction.

On the other hand, a frame 43 is attached to the bulletproof surface 41. The frame 43 is formed in a plate shape, covers both side portions of the bulletproof surface 41, and has bent end portions 43a extending from both side portions of the bulletproof surface 41 in a helmet direction. One end of a plate-like rotating arm 45 is fixed to an end 43 a of the frame 43 by a fastening member 33. The other end of the rotating arm 45 is formed in a substantially semicircular shape having substantially the same outer shape as the support plate 31. Further, a through hole 47 is formed in the rotation arm 45 at a substantially semicircular center.

The rotating arm 45 is formed by inserting the through hole 47 into the bolt 2
9 to be rotatable about a bolt 29. The inner surface of the rotating arm 45 forms a receiving surface 46, which comes into contact with the supporting surface 32 of the supporting plate 31 previously inserted through the bolt 29. As described above, the bulletproof surface 41 is rotatably supported by the bolt 29 via the frame 43 and the rotating arm 45. The receiving surface 46 of the rotating arm 45 is formed with a concave ridge 49 having substantially the same cross-sectional shape so as to fit with the convex ridge 37 on the receiving surface 32 of the support plate 31. A plurality (seven in this example) of the recesses 49 are formed radially around the through hole 47.

An adjustment dial 51 is screwed into the bolt 29 passing through the support plate 31 and the rotating arm 45. The adjustment dial 51 tightens and loosens the support plate 31 and the rotation arm 45 toward the band 23 by the rotation thereof. Then, when the adjusting dial 51 is tightened, the fitting between the convex strip 37 of the support plate 31 and the concave strip 49 of the rotating arm 45 becomes tight, and the support plate 3
1, the rotation arm 45 cannot rotate. When the adjustment dial 51 is loosened, the fitting between the convex ridge 37 and the concave ridge 49 is loosened, and the rotating arm 45 can rotate.

The pitch of the male and female threads of the bolt 29 and the adjusting dial 51 is from the tightening position at which the rotating arm 45 cannot rotate to the tightening release position at which the rotating arm 45 can rotate. Bolt 29 is set large in the axial direction. That is, the adjustment dial 51 is
The rotation angle of the tightening and loosening operation of the engagement between the support plate 31 and the rotary arm 4 is reduced, for example, by less than one rotation.
5 can be tightened or released.

A nut 53 is further screwed into the tip of the bolt 29 into which the adjustment dial 51 is screwed. This nut 5
3 is fixed to the bolt 29 by welding or the like. That is, the nut 53 and the adjustment dial 51 are prevented from dropping from the bolt 29. A decorative cap 55 is attached to the nut 53 fixed to the tip of the bolt 29.

The adjustment dial 51 described above may be provided on each of the bolts 29 on both sides of the helmet 21, but in this embodiment, the adjustment dial 51 is provided on only one of the bolts 29. Then, only the nut 53 is fixed to the other bolt 29. The nut 53 fastens the support plate 31 and the rotating arm 45 with an appropriate force so as to allow the rotating arm 45 to rotate while the convex ridge 37 and the concave ridge 49 are fitted.

An elongated band-shaped gap closing material 57 is adhered to the upper edge of the inner surface of the bulletproof surface 41 along the edge.
As the gap closing material 57, for example, a sponge material or the like which is easily elastically deformable can be used.

Next, the operation of the thus structured helmet bulletproof surface supporting structure will be described. Bulletproof surface 41
Is rotated in a direction to loosen the adjustment dial 51 to which the support plate 31 and the rotating arm 45 are tightened within a range of less than one rotation. Then, the tightening force between the support plate 31 and the rotating arm 45 is reduced, the fitting between the ridge 37 and the concave ridge 49 is loosened, and the rotating arm 45 can rotate.

In this state, when the user moves upward while holding the bulletproof surface 41, the ridges 37 of the support plate 31
From the concave streak 49. Therefore, the head of the ridge 37 comes into sliding contact with the receiving surface 46 of the rotating arm 45. Rotating arm 45
Is slightly elastically deformed by the ridge 37 slidingly contacting the receiving surface 46. As a result, a frictional force is generated, and the frictional force becomes a turning resistance.

Further, when the bulletproof surface 41 is moved upward,
The ridge 37 reaches the next adjacent ridge 49. As a result, the convex ridge 37 and the next concave ridge 49 are fitted. At this time, the frictional force generated on the receiving surface 46 is sharply reduced, so that a hand having a bulletproof surface generates a click feeling (a sense of moderation) and generates a click sound.

The rotation of the rotating arm 45 is regulated by an appropriate force by fitting the convex ridge 37 and the concave ridge 49. This regulating force is the holding force at the position where the bulletproof surface 41 moves halfway. This holding force mainly depends on the tightening force of the adjustment dial 51 and the elastic force of the convex ridge 37 and the concave ridge 49. Therefore, each time the convex ridge 37 is fitted into the concave ridge 49, the bulletproof surface 41 is held at the moving position while generating a click feeling. The position of the bulletproof surface 41 is maintained by fitting the convex ridge 37 and the concave ridge 49 by the support plate 31 on both sides of the helmet 21 and the rotating arm 45 via the frame 43 at the same time.

In this way, the bulletproof surface 41 is held at a position where each of the concave ridges 49 fits with the convex ridge 37. The bulletproof surface 41 can be held at an intermediate position in the movement range by the number of the concave stripes 49.

In order to fix the bulletproof surface 41 during the movement or at the overhead position, at the position where the concave streak 49 is fitted to the convex streak 37,
The adjustment dial 51 is turned in the tightening direction. The position where the concave ridge 49 is fitted to the convex ridge 37 can be known by a click feeling and a click sound. When the adjustment dial 51 is rotated less than one rotation, the convex ridge 37 and the concave ridge 49 in the fitted state are further pressed against each other. As a result, the ridge 37 and the concave 49 are formed.
Is tightly fitted, and the rotation of the rotation arm 45 is prevented. That is, at that position, the bulletproof surface 41 is
Fixed to

As described above, in the helmet bulletproof surface support structure described above, the bolts 29 protruding substantially opposite to each other are fixed to both sides of the band 23, and the support plate 31 is fixed to the band 23 by passing the bolt 23. At the same time, the turning arm 45 slidably contacting the support plate 31 was rotatably inserted into the bolt 29. Further, the adjusting dial 51 capable of tightening and releasing the support plate 31 and the rotating arm 45 is fixed to the bolt 29.
Screwed. Thus, in a normal state, the support plate 31 and the rotating arm 45 are tightened with an appropriate force, and the ridge 37 and the concave
The bulletproof surface 41 can be held at a position midway in the movement range by fitting the bulletproof surface 9.

Further, by tightening the adjustment dial 51 in the above-described position holding position, the support plate 31 and the rotating arm 45 can be tightened, and the bulletproof surface 41 can be fixed. Thus, the bulletproof surface 41 can be reliably prevented from slipping and falling, and the bulletproof surface 41 can be fixed at a desired intermediate position.

Further, the support structure of the helmet bulletproof surface is a rotating mechanism centered on separate bolts 29 implanted in the band 23, and the ridges 37, 49 are separately fitted. When the circumferential length of the band 23 is adjusted in order to attach the bulletproof surface 41 according to the size of the helmet 21, even if there is a slight deviation in the axis of each bolt 29, the operation of the rotating mechanism does not occur. Thereby, it has versatility that the same configuration can be attached to the helmets 21 of various sizes.

Further, since the adjustment dial 51 can tighten and release the support plate 31 and the rotating arm 45 in less than one rotation, the bulletproof surface 41 can be easily and quickly fixed and released.

Since the adjustment dial 51 is provided only on one of the bolts 29, the number of components can be reduced, and the rotating mechanism can be constructed with a simple structure.

In the above embodiment, the support plate 31
In the above, the case in which one ridge 37 is provided has been described.
Alternatively, a plurality of ridges 37 may be provided radially. In this case, the convex ridge 37 and the concave ridge 49 are simultaneously fitted at a plurality of places, and the position holding force of the bulletproof surface 41 can be increased.

[0040]

As described above in detail, the support structure for the helmet bulletproof surface according to the first aspect of the present invention projects substantially oppositely to both sides of the band which is detachably wound around the helmet. The bolts were fixed, and the bulletproof surface was fixed to the turning end of the turning arm that turned around each bolt. Then, the rotation of the rotating arm is positioned by fitting the convex ridge and the plurality of concave ridges, and the fitting of the convex ridge and the concave ridge is tightened and loosened by rotating the adjustment dial screwed to the bolt. I made it. By this, when moving the bulletproof surface from the front of the helmet to above the head, the fitting between the ridge and one of the plurality of concave stripes is tightened with an appropriate force, and the bulletproof surface is held at a position in the middle of the movement range. Can be. In addition, by tightening the adjustment dial, the support plate and the rotating arm are tightened, so that the bulletproof surface is securely prevented from slipping and falling, and the bulletproof surface can be fixed even at a desired halfway position.

Further, since the turning arm is turned on the opposite sides of the helmet about different bolts which are substantially opposite to each other, and is positioned and fixed by fitting different convex and concave strips, the circumference of the belt is adjusted. Even if the length of the bolt changes and there is some deviation in the axis of each bolt, the same configuration is applied to helmets of different sizes, as it does not impair the rotation of the rotating arm and the fitting of the convex and concave strips. Can be attached.

Further, since the adjustment dial is provided on only one of the pair of bolts, the number of parts can be reduced and the rotating mechanism can be constructed with a simple structure.

Further, the pitch of the male and female screws into which the adjustment dial and the bolt are screwed is formed large, so that the operation of tightening and loosening the fitting between the ridge and the ridge is performed. (Rotation angle) is reduced, for example, with less than one rotation of the adjustment dial, the support plate and the rotating arm can be tightened and released, and the bulletproof surface can be easily and quickly fixed and released.

[Brief description of the drawings]

FIG. 1 is a side view showing a support structure of a helmet bulletproof surface according to the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a partial cross-sectional view of a bulletproof surface rotation support portion.

FIG. 4 is an exploded perspective view of a bulletproof surface rotation support portion.

FIG. 5 is an enlarged side view illustrating a movable range of a bulletproof surface rotation support unit.

FIG. 6 is a side view showing a conventional structure for supporting a bulletproof surface for a helmet.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a side view in which the bulletproof surface has been moved overhead from the state of FIG. 6;

[Explanation of symbols]

21 ... helmet, 23 ... band, 29 ... bolt, 31
... Support plate, 32 ... Support surface, 37 ... Protrusion, 41 ... Bulletproof surface,
45: rotating arm, 46: receiving surface, 47: through hole, 49
... concave, 51 ... adjustment dial.

Claims (4)

(57) [Claims] 1. A helmet bulletproof surface support structure for supporting a bulletproof surface so as to cover the front side of a helmet, comprising: a band-shaped band removably wrapped around an outer periphery of a side portion of the helmet; A pair of bolts that are fixed and protrude substantially oppositely from both sides of the helmet, a ridge disposed near a base end of the bolt, and are inserted so as to be rotatable around each of the bolts. A plurality of concave lines that fit with the convex lines are formed radially around the bolt, and a rotating arm that holds the bulletproof surface at a rotating end thereof is screwed into the bolt, An adjustment dial for tightening and loosening the engagement between the convex ridge and the concave ridge. A support structure for a bulletproof surface for a helmet, comprising: 2. A helmet bulletproof surface support structure for supporting a bulletproof surface so as to cover the front side of a helmet, comprising: a band-shaped band removably wrapped around an outer periphery of a side portion of the helmet; A pair of bolts that are fixed and protrude substantially oppositely from both sides of the helmet; and a support surface that is fixed to the band so as to be disposed near the base end of the bolt and that faces outwardly substantially perpendicular to the bolts. A support plate on which the ridges are formed, a plate piece having a receiving surface that can come into contact with the support surface of the support plate, is inserted so as to be rotatable around the bolts, and A rotating arm formed on the receiving surface with a plurality of recesses that fit with the ridges radially around the bolt; fixed to a rotating end of each of the rotating arms to hold the bulletproof surface; Frame, and the bolt is screwed And an adjustment dial for tightening and loosening the engagement between the convex ridge and the concave ridge. A helmet bulletproof surface support structure, comprising: 3. The adjustment dial is screwed to only one of the bolts, and a nut is fixed to the other bolt so as to maintain the engagement between the convex ridge and the concave ridge. 3. The support structure for a helmet bulletproof surface according to claim 1 or 2. 4. The pitch of the male and female screws into which the adjustment dial and the bolt are screwed is so large as to reduce the rotational operation amount of the adjustment dial for tightening and loosening the fitting between the convex ridge and the concave ridge. 2. The semiconductor device according to claim 1, wherein:
The support structure for a helmet bulletproof surface according to claim 3.