JPH02289104A - Helmet - Google Patents

Abstract

PURPOSE:To improve the operability of a helmet by housing a sunlight-shielding plate and a wind-shielding plate in a cover member on the un-use of the plates and separately operating the operation lugs for the plates, respectively, to rotate the shield plates. CONSTITUTION:When not used, a sunlight-shielding plate 71 and a wind-shielding plate 72 are slid into a cover member 6 along guide rails in a mutually superposed state to receive the plates in the cover member in a compact state. The operation of an operation lugs 171 permits to rotate the shield plate 71 to a closing position and the operation of an operation lugs 172 also to rotate the shield plate 72 to a closing position.

Description

[Detailed Description of the Invention] A1 Objective of the Invention (1) Industrial Field of Application The present invention is directed to a helmet, in particular, it is equipped with a sun shield plate and a wind shield plate, and is worn on a passenger of a helicopter, etc. Regarding helmets.

(2) Prior Art The shield plate for the sun shield is colored and transparent, and is mainly used during flight, and the shield plate for the wind shield is colorless and transparent, and is used when crew members leave the helicopter during a sea rescue, etc. It is used when leaning forward to search, diving into the sea, etc.

In this way, since both shield plates can be used depending on their respective purposes, it is necessary to have good operability and to store them compactly in a limited area of the cap body.

(3) Problems to be Solved by the Invention An object of the present invention is to provide the helmet that can satisfy the above requirements.

Structure of the B0 Invention (1) Means for Solving Problem 413 The present invention provides a cap body having an opening at the front through which the wearer's face faces, and a cap body having both end portions that cover the outer surface of the top portion of the cap body on the opening side. a cover member attached to the outer surface of both sides of the cap body, an open position where the cover member is stored within the cover member to open the opening, and a closed position where the cover member is advanced from within the cover member and closes the opening. The helmet is provided with a sun shield plate and a wind shield plate that rotate back and forth between the helmets, and in the open position, both shield plates overlap inside and outside, and the helmet is covered with the cover member. A first member that slidably engages both ends of the outer shield plate with outer surfaces of both sides of the body.
A second guide rail is provided, a guide groove is formed in the cover member to guide a first operating knob provided on the outer shield plate, and a second slider is slidably held at one end of the inner shield plate. A guide rail is disposed on the outer surface of one side of the cap body so as to be located closer to the top than the one first guide rail, and the other end of the inner shield plate is connected to the other first guide rail. It is characterized in that it is rotatably attached to the outer surface of the other side of the cap body via a mounting shaft to avoid interference with the guide rail, and a second operating knob is provided at the other end.

(2) Function When not in use, both shield plates are in the open position and compactly stored within the cover member.

When using the outer shield plate, for example, the sunshade shield plate, when the first operation knob is operated, the shield plate is guided by the two cylinder 1 guide rails and smoothly rotates to the closed position.

When using the inner shield plate, such as the wind shield plate, by operating the second operation knob, the shield plate will be guided by the second guide rail and will smoothly rotate to the closed position around the mounting axis. do.

(3) Embodiments In FIGS. 1 to 4, a helmet 1 worn by, for example, an occupant of a helicopter is equipped with an FRP cap body 2, and the front part of the cap body 2 has an opening through which the wearer's face faces. 3 is formed.

Both ends of a plastic cover member 6 that covers the outer surface of the opening side top portion 5 of the cap body 2 are attached to the outer surface of both side portions 41.4 of the cap body 2, respectively. The cap body 2 also includes a first shield plate 7 made of colored transparent plastic. and a second shield plate 7t made of a colorless and transparent plastic windshield.
゜ In the illustrated example, the cover member 6 is configured to reciprocate between the closing position B (indicated by dotted lines in FIG. 3) and the closing position B (indicated by dotted lines in FIGS. 2 and 3) in which it advances from inside the cover member 6 and closes the opening 3. , in the open position A, the first shield plate 7I is outward and the second shield plate 7I is outward.
Shield plate 7. Both shield plates 11 and It are stacked so that the shield plates 11 and 1t are located on the inside.

As shown in FIGS. 5 to 8, both sides 41+4' of the cap body 2
! The first section has a substantially fan-shaped outer surface. Second support member 81.8. is arranged with its longer arcuate edge positioned on the top 5 side.

First support member 8. The arcuate mounting surface 9 is the furthest away from the outer surface of the cap body 2, and the arcuate first guide rail 10. is located closer to the top 5 than the mounting surface 9 and approaches the outer surface of the cap body 2.
and an arcuate second guide rail lO that is closer to the top 5 than the first guide rail 101 and approaches the outer surface of the cap body 2.
It has t.

The second support member 8□ includes an arcuate mounting surface 9 that is furthest away from the outer surface of the cap body 2, and an arcuate first guide rail lOI that is closer to the top portion 5 than the mounting surface 9 and approaches the outer surface of the cap body 2. , and an arcuate backing plate 11 connected to the inner end edge of the first guide rail 10 on the cap body 2 side.

1st. The second support members 8+, 8m have a pair of screw holes 13 penetrating through them and having one end opened at both ends of the mounting surface 9 and the other end opened at the contact surface 12 on the opposite side of the mounting surface 9. have Each contact surface 12 is placed against the outer surface of the cap body 2, and a short machine screw 14 is screwed into each screw hole 13 from the inside of the cap body 2, whereby the first. Second support member 81. St is cap body 2
mounted on.

Both ends of the cover member 6 are placed against both mounting surfaces 9, and short machine screws 15 passing through these ends are screwed into each screw hole 13. This causes the cover member 6 to move to the front support member 81.
Can be installed on 8o.

A pair of arcuate engagement protrusions 16 are formed on the inner surface of both ends of the first shield plate 71 so as to face each other, and both the engagement protrusions 16 are formed on the inner surface of both ends of the first shield plate 71 . The first guide rail 10 of the second support member 81.8□
1 and are slidably engaged with each other.

Also, Figures 1 to 4, and Figure 9. As shown in FIG. 10, a first operation knob 171 is provided at the center of the rear edge of the first temporary shield 71 as follows.

That is, the mouth-shaped member 18 is attached to the center of the rear edge of the first shield plate 71 from the outside, and the rubber plate 19 is fitted between the upper piece of the member and the outer surface of the first shield plate 71. ing. The guide member 20 includes a sliding portion 2 having a substantially rectangular parallelepiped shape.
1, an upper threaded cylindrical part 22 with a circular cross section projecting from the upper surface of the sliding part 21, and a lower threaded cylindrical part 23 with a square cross section projecting from the lower surface of the sliding part 21. Lower threaded cylinder part 2
3 passes through the upper piece of the mouth-shaped member 18 and the rubber plate 19, and the lower threaded cylindrical portion 23 is connected to the lower piece of the mouth-shaped member 18 and the first shield plate 7. A small screw 24 having a left-hand thread passing through the guide member 20 is screwed into the first
Shield plate 7. mounted on.

The sliding portion 21 is slidably fitted into a guide groove 25 extending in the front-rear direction of the cover member 6, and
The tip side of 2 protrudes from the upper surface of the cover member 6. A screw shaft 26 with a right-handed thread is implanted in the upper screw cylinder portion 22,
A first operating knob 171 having a female screw hole 27 is screwed onto the screw shaft 26 . The tip of the screw shaft 26 has a first
A stopper 28 is provided to prevent the operating knob IL from coming off.

The first operating knob 171 has a recess 29 into which the protruding portion of the upper threaded cylindrical portion 22 from the cover member 6 is loosely fitted. When you tighten the knob 17
1 and the U-shaped member 18, and the first shield plate 171 is fixed to the cover member 6.

The length of the guide groove 25 is such that when the first operating knob 17 is located at the rear end of the guide groove 25, the length of the first shield plate 7. is in the open position IA and the first operating knob IL is in the front end of the guide groove 25, the first shield plate 71 is in the closed position B.

Fifth. As clearly shown in FIG. 7, an arcuate engagement protrusion 30 is formed on the inner surface of one end of the second shield plate 7□, and the engagement protrusion 30 is connected to the second guide rail 10 of the first support member 81. is slidably engaged with. 6th, 8th. As clearly shown in FIG. 11, one end of the support plate 31 is attached to the other end of the second shield plate 78. In the second support member 8t, the first
A through hole 32 is formed between the guide rail 101 and the backing plate 11 along their edges, and a substantially convex stepped notch 33 facing the cap body 2 along the edges is provided on the mounting surface 9 side. It is formed. The support plate 31 is loosely inserted into the through hole 32 and the stepped notch 33 and passes through the second support member 8t,
This avoids interference between the support plate 31 and the first guide rail 10□.

The other end of the support plate 31 is rotatably attached to a mounting shaft 34 that projects outward from the side 4 of the cap body 2, and the mounting portion is attached to the third. As shown in FIG. 11, it is hidden by a cover member 35 attached to the cap body 2. In FIG. 6, 36 is a screw hole for attaching the cover member 35.

11th. 13th. As shown in FIG. 14, the inner end surface a of the hollow support shaft 37 is brought into contact with the outer surface of the support plate 31 near the mounting surface 9 of the second support member 81, and the support shaft 37 is connected to the pair of machine screws 38. It is attached to the support plate 31 and protrudes outward from the cap body 2.

A guide groove 39 extending in the generatrix direction is formed on the outer peripheral surface of the support shaft 37, and both ends of the guide groove 39 do not reach the inner end surface a and the outer end surface of the support shaft 37.

A guide protrusion 42 is provided on the inner peripheral surface of a mounting hole 41 in the cylindrical portion 40 of the second operating knob 17□, and the mounting hole 41 is fitted into the support shaft 37, and the guide protrusion 42 slides into the guide groove 39. can be freely engaged.

Thereby, the second operating knob 17□ can smoothly reciprocate between the forward position in which it moves forward in the direction toward the cap body 2 and the retracted position in which it retreats in the direction away from the cap body 2, and It becomes unrotatable with respect to the support shaft 37.

A coil spring 44 is compressed between the annular bottom surface of the large diameter hole 43 that opens on the outer end surface of the support shaft 37 and the bottom surface of the attachment hole 41 in the second operation knob 17□.
The second operating knob 17: is biased toward the retracted position by the resilient force.

As shown in FIGS. 11 to 13, in the stepped notch 33 of the second support member 8o, an arcuate surface 45 facing the outer surface of the cap body 2
No. 1 on both ends of the . Second engagement recesses 461 and 46z are respectively formed.

Second operation knob 17. In this case, an engaging protrusion 47 is provided protruding from the end of the outer circumferential surface of the cylindrical portion 40 on the support plate 31 side, and the engaging protrusion 47 is connected to the first. Second engagement recess 461.46! It is now possible to disengage from it.

The locking protrusion 47 is configured when the second shield plate 7□ is in the open position A and the second operating knob 17t is in the retracted position due to the elastic force of the coil spring 44, as shown by solid lines in FIGS. 11 and 13. When the second operating knob 17. is engaged with the first engagement recess 461, the second temporary shield 7□ is in the closed position B as shown by the chain line in FIG. is in the retracted position as described above, the second engagement recess 46! engage with.

On the other hand, the forward position of the second operating knob 17□ is
This is determined by the end surface coming into contact with the outer surface of the support plate 31, and in this forward position, the engagement protrusion 47 is in contact with the first engagement recess 46.
1 (or from the second engagement recess 46t), and by rotating the second operating knob 17t, the second
The shield plate 7° can be rotated from the open position A (or closed position B) to the closed position B (or open position A). During this rotation of the second shield plate 7t, the engaging protrusion 4
7 can be slid on the arcuate surface 45 as shown by the chain line in FIG. 12, so that the second shield plate 7 can be rotated stably. In order to smoothly slide the retaining protrusion 47 on the arcuate surface 45, the retaining protrusion 47 is formed to have a semicircular cross section as shown in the figure, and the arcuate surface is formed on the arcuate surface 45.
It is best to have it in contact with the

Next, the 11th. 14th. According to Figure 15, the second operation knob 1
7. The assembly of the support shaft 37 and the support shaft 37 will be explained.

The support shaft 37 and a second operation knob t7. When assembling the guide protrusion 42 with the guide groove 39
An introduction groove 48 is provided to engage with the guide. Its introduction groove 48
is a first groove portion 48 . which has one end opened at the outer end surface of the support shaft 37 and extends parallel to the guide groove 39 . and a second groove 483 that extends in the circumferential direction and communicates between the other end of the first groove 48 and the guide groove 39 .

The assembly of the second operating knob 17 and the support shaft 37 is performed before attaching the support shaft 37 to the support #1i31.
After inserting the coil spring 44 into the large diameter hole 43 of the support shaft 37, while compressing the coil spring 44, the support shaft 37 is inserted into the second
Push the operating knob 17t into the mounting hole 41 and slide the guide protrusion 42 from one end of the first groove 481 to the other end as shown in FIG. 15. Next, rotate the support shaft 37 or the second operating knob 17, The guide protrusion 42 is inserted into the second groove portion 48.
2 and guide it into the guide groove 39, and then the support shaft 37
When the pushing force is released, one end of the support shaft 37 protrudes from the mounting hole 41 due to the elastic force of the coil spring 44, and the guide protrusion 42 is positioned at the end of the guide groove 39 facing the outer end of the support shaft.

After the support shaft 37 and the second operating knob 17□ are assembled in this manner, the support shaft 37 is attached to the support plate 31.

In FIG. 11, the forward position of the second operating knob 17z is determined by the end surface of the cylindrical portion 40 coming into contact with the outer surface of the support plate 31 as described above, and the guide protrusion 42 as the second operating knob 17□ moves forward. The forward limit of the guide groove 39 and the second groove part 48! For example, the position d shown by the chain line in FIG.

This prevents the second operating knob 17g from rotating relative to the support shaft 37, so the second operating knob 17g! will not fall off from the support shaft 37.

Next, the operation of this embodiment will be explained.

1st. As clearly shown in FIG. 3, both shield plates 7+, 7
When m is not in use, both shield plates 77! is in the open position A and is compactly stored within the cover member 6. In this case, the first operating knob 171 is located at the rear end of the guide groove 25 and is tightened.
is fixed to the cover member 6 and is securely held at the open position A. Further, the engagement protrusion 47 of the second operating knob 17□ is engaged with the first engaging recess 461 by the elastic force of the coil spring 44, and this engaged state pushes the second operating knob 17□ to the forward position. It will be maintained unless you move it, so the second shield temporary 7□
is securely held in the open position A.

Both shield plates 71.7! When using the first shield plate 7° in a state where the first operating knob 17. is stored in the cover member 6, the first operation knob 17. Loosen the knob 17. When the first shield plate 7. is moved to the front end of the guide groove 25, the first shield plate 7. is guided by the brush 1 guide rail 10I and smoothly rotates to the closed position B.

After that, if you tighten the first operation knob 17+, the first shield plate 7. is held securely in the closed position B.

In this case, since the first operation knob 171 is screw-fixed as described above, the first shield plate 7. can be adjusted steplessly between its open and closed positions A, B.

Also both shield plates 71.7! When using the second shield plate 7t in a state where the shield plate 7t is stored in the cover member 6, the second operating knob 17□ is pushed to the forward position against the elastic force of the coil spring 44, and then engaged. The protrusion 47 is the first
Engagement recess 46. After separating from the second operation knob 17t
Rotate counterclockwise in Figure 3. During this rotation, if the pressing force on the second operating knob 178 is relaxed, the retaining protrusion 47 slides on the arcuate surface 45 of the second support member 8□, and then the engaging protrusion 47 moves to the stepped surface on one end of the arcuate surface 45. 49, and is engaged with the second engagement recess 46g by the elastic force of the coil spring 44.

During this time, the second shield plate 7t is connected to the second guide rail Lo.
g and rotates smoothly around the mounting shaft 34 to the closed position B, and is securely in the closed position B by the engagement between the retaining protrusion 47 and the second engaging recess 46 due to the elastic force of the coil spring 44. is maintained.

When the second shield plate 7t is rotated from the closed position B to the open position A, the locking protrusion 47 is placed on the stepped surface 49. at the other end of the arcuate surface 45. abutting against the first engagement recess 46. engage with.

By making the locking protrusions 47 abut against the stepped surfaces 4949□, the locking protrusions 47 can be prevented from overrunning, and both the engaging recesses 46, . 46□ can be engaged with 11 pieces.

Furthermore, if the guide protrusion 42 is provided on the inner peripheral surface of the mounting hole 41 of the second operating knob 17□, the guide protrusion 42 will not be exposed to the outer surface of the second operating knob 17□, thereby improving the appearance. can.

C0 Effects of the Invention According to the present invention, the shield plate for the sunshade and the shield plate for the windshield can be compactly stored in the cover member in their open positions when they are not in use. Also number 1. It is possible to provide a helmet with good operability, in which each shield plate can be smoothly rotated to the open and closed positions by separately operating the second operation knobs.

[Brief explanation of the drawing]

Figure 1 is a front view of the helmet, Figure 2 is a view from Figure 1 ■ arrow view, Figure 3 is a view from Figure 1 ■ arrow view, Figure 4 is a view from Figure 3 ■ arrow view,
FIG. 5 is a perspective view of the main part with the cover member removed from the helmet and corresponds to FIG. 2, and FIG. 6 is a perspective view of the main part with the cover member removed from the helmet and corresponds to FIG. Figure 7 is a sectional view along the line ■-■ in Figure 2, and Figure 8 is a cross-sectional view along the line ■-■ in Figure 3.
■ Line sectional view, Figure 9 is a line sectional view of Figure 1 IX-IX, Figure 1
Figure 0 is a sectional view of Figure 9 X-XAl, Figure 11 is Figure 3 Xl
XlA1 sectional view, Fig. 12 is a sectional view taken along the xn-xn line in Fig. 11, Fig. 13 is a sectional view taken along the xm-xm line in Fig. 11, Fig. 14 is an exploded perspective view of the main part, and Fig. 15 is a guide for the support shaft. It is an explanatory view showing the relationship between a groove, an introduction groove, and a guide protrusion. 2... Cap body, 3... Opening, 4. ．． 4. ...Side part, 5...Top part, 6...Cover member, 7I...First shield plate for sun protection, 78...Second shield plate for wind protection, 101, lO□・...First. 2nd guide rail, 1
7. . 173...1st. Second operation knob, 25...Guide groove, 34...Mounting shaft, A...Open position, B...Closed position Patent Applicant Shoei Kako Co., Ltd.

Claims (1)

[Claims] A cap body having an opening through which the wearer's face faces at the front; a cover member that covers the top outer surface of the cap body on the opening side and has both ends attached to the outer surface of both sides of the cap body; and the cover. comprising a sunshade shield plate and a windshield shield plate that rotate back and forth between an open position that is stored in the member and opens the opening and a closed position that advances from inside the cover member and closes the opening; In the open position, the helmet has both shield plates stacked on the inside and outside, and a first part in which both ends of the outer shield plate are slidably engaged with outer surfaces of both sides of the cap body covered by the cover member. 1
A second guide is provided with a guide rail, and a guide groove is formed in the cover member to guide a first operating knob provided on the outer shield plate, and a second guide slidably engages one end of the inner shield plate. A rail is disposed on the outer surface of one side of the cap body so as to be located closer to the top side than the one first guide rail, and the other end of the inner shield plate is connected to the other first guide rail. A helmet, characterized in that it is rotatably attached to the outer surface of the other side of the cap body via a mounting shaft to avoid interference with the rail, and a second operating knob is provided at the other end.