JPH01207412A - Shielding device of helmet - Google Patents

Abstract

PURPOSE:To enable the opening of a shading plate independent of other element and to enable the lowering of a shield plate simultaneous to the lowering of the shading plate, by boring a circular arc slit on the shield plate and providing the shading plate with a pin engaging with said slit. CONSTITUTION:A shield plate 3 covering the front window of a helmet and a shading plate 4 covering a part of the shield plate 3 are attached to a helmet in a state openable and closable by rotating round the same axle. In the above helmet, a circular arc slit 70 is formed to a fixing tool 62 of the shield plate 3 coaxially with the fixing shaft 61 and a pin 71 engaging with said slit 70 is attached to the fixing tool 62 of the shading plate 4.

Description

Detailed Description of the Invention A0 Object of the Invention (1) Industrial Application Field The present invention relates to a helmet shield in which a transparent shield plate is connected to a cap body to open and close a window provided on the front surface of the helmet body. Regarding equipment.

(2) Prior Art Conventionally, such devices have been disclosed in Japanese Patent Application Laid-open No. 62-85007, for example.
It is publicly known from the publication No.

(3) Problems to be Solved by the Invention Incidentally, since shield plates are generally transparent, they may be dazzled by sunlight when used during the daytime. Therefore,
It is possible to cover the front of the shield plate with a shade plate, but this shade plate is unnecessary at night.
It is necessary to be able to retreat from the front of the shield plate when it is no longer needed. Furthermore, when using a shade plate, the window must be shielded with a shield plate.

The present invention has been made in view of the above circumstances, and provides a shield device for a helmet that allows the shade plate to be opened independently and also ensures that the shield plate also closes when the shade plate is closed. With the goal.

B3 Structure of the Invention (1) Means for Solving Problems According to the present invention, the cap body is rotatable between a closed position covering the front of the shield plate and an open position above the cap body. The shade plates are connected, and in order to regulate the relative rotation of the shield plate and the shade plate, the shield plate is provided with an arc-shaped regulation hole centered on the rotation wheel line, and the shade plate is fitted with the regulation hole. A matching regulation pin is provided.

(2) Effect According to the above configuration, even if the shield plate is in the position where the window is closed, the regulation pin can move toward the opening side along the regulation hole, so that the shade plate can be opened independently. Also, when the shade plate is closed, the regulating pin comes into contact with the end of the regulating hole, so that the shield plate follows the closing operation of the shade plate and moves in the direction of closing the window.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 1, 2, and 3, a helmet H is of a closed type used by, for example, a jet pilot. The cap body 1 of this helmet H includes a transparent synthetic resin shield plate 3 having a sealing member 8 attached to the entire periphery to close a window 2 formed in the front surface of the cap body 1, and the shield. A colored synthetic resin shade plate 4 for covering the plate 3 is supported so as to be openable and closable.

Moreover, one end in the left and right direction of the shield plate 3, for example, the left end, is connected to one side of the cap body 1 via a tightening mechanism 5 and a first hinge mechanism 6, as shown in FIGS. 4 to 8. The other end in the left and right direction of 3, for example, the right end, is connected to the other side of the cap body 1 via a second hinge mechanism 7, as shown in FIGS. 9 and 10, and the shade plate 4 is The shield plate 3 is supported at both ends of the shield plate 3 so as to be rotatable.

In FIG. 4, FIG. 5, and FIG. 6, the tightening mechanism 5 is
Loosen position R (second position) of shield plate 3 relative to seal member 8
The sealing member 8 of the shield plate 3 is set at the intermediate position (see figure).
Tightening position T (see Figure 2) and shield plate 3
The substrate 9 can be rotated between the open position 0 (see FIG. 2), and is fixed to an example part of the cap body 1.
The operating plate IO is arranged outside the operating plate IO, and the operating knob 11 is arranged further outside the operating plate IO.

A through hole 12 is bored in one example of the cap body 1, and a first attachment body 13 in the shape of a short cylinder with a bottom is fitted into the through hole 12 with its closed end facing inward. The first mounting body 13 is adhesive 1
4, it is airtightly fixed to the inner surface of the cap body 1. Moreover, the first
A cylindrical support portion 15 coaxially protrudes from the mounting body 13, and the substrate 9 is received by the tip of the support portion 15.
is fitted into the first mounting body 13, and the board 9 has a plurality of, for example, three
The first mounting body 13, that is, the cap body 1
is fixed to.

The substrate 9 is basically formed into a disk shape, and a guide shaft 17 is provided protruding at right angles from the center of the outer surface thereof.

Further, the shield plate 3 is tightened along the moving direction 18 between the position T and the loosening position R on an imaginary straight line 19 passing through the axis of the guide shaft 17.
A cylindrical rotating roller 21 is fitted into the first guide pin 20 .

On the other hand, a guide groove 22 is provided on the surface of the actuating plate 10 facing the substrate 9 so that the rotating roller 21 can be fitted thereinto in a removable manner. This guide groove 22 has a linear shape that extends in a straight line on the front side of the guide shaft 17 along the virtual straight line 19 in the state of the operating plate 10 when the shield plate 3 is in the tightening position T or the loosening position R. It consists of a groove 22a and an arcuate groove 22b that is connected to the rear end of the groove 22a and formed in an arc shape centered on the guide shaft 17. It extends downward from the rear end. Further, a first guide hole 23 for inserting the guide shaft 17 is bored in the actuating plate 10, and this first guide hole 23 is formed when the shield plate 3 is in the tightened position T or loosened position R. The first guide hole 23 extends in a straight line along the imaginary straight line 19 and is bored with an interval between it and the linear groove 22a.
The length of is set corresponding to the linear groove portion 22a.

That is, when the actuating plate 10 moves along the moving direction 18 and the rotating roller 21 is located at the front end of the linear groove 22a, the guide shaft 17 is located at the front end of the first guide hole 23, and the rotating roller 21 is located at the front end of the first guide hole 23. The linear groove 22a and the first guide hole 23 are arranged so that their lengths are related to each other such that the guide shaft 17 is located at the rear end of the first guide hole 23 when located at the rear end of the linear groove 22a. will be established.

The actuating plate 10 has a second guide hole 24 that extends in a straight line in a direction substantially orthogonal to the first guide hole 23 on the rear side of the first guide hole 23 . It is drilled so that it is located at Moreover, the second guide hole 24 is formed to extend vertically so that the other end is near the lower outer peripheral edge of the actuating plate 10 when the shield plate 3 is in the tightening position T or the loosening position R. Ru. Further, a retaining groove 25 is formed on the outer surface of the actuating plate 10 on the opposite side of the first guide hole 23 with respect to the second guide hole 24 .

This engagement groove 25 is formed into a piece shape, extending in the vertical direction and opening its lower end from the lower side surface of the actuating plate 10 when the shield plate 3 is in the tightened position T or loosened position R. When the guide shaft 17 is located at the front end of the first guide hole 23, the retaining part 25a extends in the radial direction of the guide shaft 17, and the inner part of the engaging part 25a increases in width as it goes downward. A guide portion 25b connected to the end is continuously provided.

In Figure 7, 5. Two recesses 26 and 27 are provided on the outer surface of the substrate 9 at positions at a central angle α (see FIG. 6) about the axis of the guide shaft 17. On the other hand, the actuating plate 10 has a hole 29 whose outer surface is closed with a cap 28, and a first stopper pin 31 with a spring 30 interposed between it and the cap 28 has its tip connected to the recess 26, It is inserted into the hole 29 with limited axial movement allowed to fit into the hole 27 . Shi, maybe the first stop pin 3
1 and the recesses 26 and 27, the guide shaft 17 is connected to the first guide hole 2.
The rotation range of the actuating plate 100 when located at the rear end of the shield plate 3, that is, the rotation range between the loosened position R and the open position 0 of the shield plate 3 is restricted.

An insertion hole 32 is formed in the center of the operating knob 11 to allow the guide shaft 17 to pass therethrough, and a large number of grooves 33 are provided radially around the periphery of the operating knob 11 to prevent slipping during rotational operation. . A retaining ring 34 is fitted to the end of the guide shaft 17 inserted into the insertion hole 32 to engage with the operation knob 11.
A lid 35 is provided on the operation knob 11 to cover the end of the guide shaft 17.
is fixed. Further, the operation knob 11 has the second guide hole 2.
A second guide pin 37 is fitted with a rotating roller 36 that moves within the second guide pin 37, and a retaining ring 38 is fitted to the second guide pin 37 to prevent the rotating roller 36 from being pulled out.

In FIG. 8, the operation knob 11 has a bottomed guide hole 39 extending in the radial direction and opening on the outer circumferential surface, and an operation pin 40 is slidably fitted into the guide hole 39. be done. Furthermore, a long hole 41 communicating with the guide hole 39 is bored in the surface of the operating knob 11 facing the operating plate IO along the radial direction, and a second stopper pin 42 that engages with the retaining groove 25 has a long hole. It passes through the hole 41 and is screwed onto the side of the operating pin 40. Therefore, the operation pin 40 is inserted into the guide hole 4 within the range where the movement of the second stopper pin 42 is regulated by the elongated hole 41.
A spring 43 is compressed between the closed end of the guide hole 39 and the operating pin 40 . Therefore, the operating pin 40 is biased in a direction that causes its outer end to protrude from the outer peripheral surface of the operating knob 11. Moreover, the second stopper pin 42 is arranged such that the rotating roller 36 is located at one end, that is, the upper end of the second guide hole 24 while the second stopper pin 42 is engaged with the engaging portion 25a of the engaging groove 25. Ru.

The left end of the shield plate 3 is connected to the actuation plate IO via the first hinge mechanism 6, and the first hinge mechanism 6 includes two bracket parts 44 provided on the actuation plate 10,
The support plate 46 is fixed to the left end of the shield plate 3 and pivoted to the bracket part 44 via a support shaft 45. The bracket portion 44 is provided on the operating plate 1° at the upper and lower positions of the guide shaft 17 when the shield plate 3 is in the tightened position T, and is formed in a substantially U-shape that is open toward the front. Further, the support +1i 46 has a shape corresponding to the front part of the actuating plate 1o and is formed in an arc shape, and is fixed to the left end part of the shield plate 3 by a plurality of screw members 47. Arm portions 48 that can protrude into the bracket portion 44 are integrally provided at both ends of the support plate 46 in the circumferential direction, and these arm portions 48 operate with an axis perpendicular to the guide shaft 17. They are supported by the bracket portions 44 by support shafts 45 screwed onto the plate 10, respectively.

An arcuate guide rail 51 bulging toward the front is fixed to the support plate 46, and a support plate 52 fixed to the left end of the shade plate 4 is slidably fitted onto the guide rail 51. Ru. Therefore, the shade plate 4 is supported by the shield plate 3 so as to be openable and closable.

9 and 10, a through hole 53 is bored in the other side of the cap body 1, and a second mounting body 54 is fitted into the through hole 53 from the inside. The mounting body 54 is made of adhesive 5
5, it is airtightly fixed to the inner surface of the cap body l. The right end portions of the shield plate 3 and the shade plate 4 are rotatably supported on the outer surface of the second mounting body 54 via the second hinge mechanism 7 without restricting their mutual relative angular displacement.

The second hinge mechanism 7 is attached to the support bracket 57 by a support bracket 57 fixed to the outer surface of the second mounting body 54 by a plurality of screw members 56 and a support shaft 58 parallel to the support shaft 45 of the first hinge mechanism 6. Rocking plate 59 rotatably supported
A swing regulating pin 60 that can come into contact with the outer surface of the second mounting body 54 is protrudingly provided on the inner surface of the swing plate 59 in order to restrict the swinging toward the second mounting body 54 . Further, on the outer surface of the swing plate 59, a shaft 61 for rotatably supporting the shield plate 3 and the shade plate 4 is provided projecting at right angles, and a support tube 62 is provided projecting at right angles. In addition, the shaft 61 has a large diameter portion 61a on the proximal end side and a small diameter portion 61b on the distal end side that are coaxially connected, and a pair of notches 61c are provided at the distal end portion of the large diameter portion 61a. .

A fan-shaped support plate 62 is fixed to the right end of the shield plate 3 by a plurality of screw members 63, and a hole 64 is bored in this support plate 62. A synthetic resin washer 65 is interposed between the hole 64 and the rocking plate 59, and the large diameter portion 6 of the shaft 61 is inserted into the hole 64.
1a is inserted, and in the inserted state, the notch 6 of the shaft 61
1c and a small diameter portion 61b protrude from the support plate 62. Further, a fan-shaped support plate 66 is fixed to the right end portion of the shade plate 4 by a plurality of screw members 67, and a hole 68 is bored in this support plate 66. Moreover, the hole 68 has a notch 6
The synthetic resin washer 69 that engages with the support plate 6
2, the small diameter portion 61b of the shaft 61 is inserted therethrough. Therefore, the shield plate 3 and the shade plate 4
The right end portion of is rotatably supported by a shaft 61.

An arcuate regulation hole 70 centered on the axis of the hole 64 is bored in the support plate 62 of the shield plate 3, and a regulation pin 71 that can fit into the regulation hole 70 is inserted into the support plate 62 of the shade plate 4. 66. Therefore, the relative rotation of the shield plate 3 and the shade plate 4 is limited to the range in which the regulation pin 71 can move within the regulation hole 70. Moreover, the regulation hole 70 is in the closed position in which the shade plate 4 covers the shield plate 3 in front thereof when the shield plate 3 is in the tightened position T or in the loosened position R, and in the open position in which the shade plate 4 is rotated above the cap body l. The regulating pin 71 is arranged so as to be rotatable between the regulating hole 70 and the regulating hole 70 when the shade plate 4 is in the closed position.

A holder 73 whose base end is fixed to the distal end of the support cylinder 62 by a screw member 72 is disposed at an outer position of the support plate 66, and a hole 7 formed in the middle of the holder 73 is arranged.
4 includes a small diameter portion 61b of the shaft 61 protruding from the support plate 66.
is inserted. Also, a spring 75 is attached to the tip of the holder 73.
A pair of click balls 76 are provided which are biased in the direction of protruding toward the support plate 66. On the other hand, the support plate 66 is provided with a plurality of recesses 77, for example, six, at equal intervals on a virtual arc centered on the axis of the shaft 61, and the pair of click balls 76 are arranged in the recesses adjacent to each other. 77
arranged so as to fit together at the same time. Due to the click action between the rick ball 76 and the recess 77, the support plate 66 and the shade plate 4 are elastically moved to four positions: the closed position, the 1/3 open position, the 2/3 open position, and the open position. will be held.

Second hinge mechanism 7, support plate 62, 66 and holder 73
is covered by a cover 78 which is secured to the support bracket 57 by screw members 79. Further, on both sides of the window 2, protrusions 80 that can come into contact with the inner surface of the shield plate 3 are provided on the surface of the cap body 1, and these protrusions 80 are
When the shield plate 3 is tightened, it functions to evenly press against the seal member 8.

Next, the operation of this embodiment will be explained. When the shield plate 3 is in the tightened position T, the second stopper pin 42 engages with the engagement portion 25a of the engagement groove 25 as shown in FIG. In this state, the guide shaft 17 is located at the front end of the first guide hole 23, the rotating roller 21 is located at the front end of the linear groove 22a in the guide groove 22, and the rotating roller 36 is located at the upper end of the second guide hole 24. located, shield plate 3
is in pressure contact with the sealing member 8 of the window 2.

In this way, when the shield plate 3 is in the tightened position T,
The shade plate 4 is rotatable between a closed position and an open position, and the shield plate 4 can be rotated between a closed position and an open position.
It is free to open only the shade plate 4 while keeping it tightened at position T.

When the shield plate 3 is to be loosened from the tightened position T to the loosened position R, the operating pin 40 is pushed in against the spring force of the spring 43. Then, the second stopper pin 42 moves to the inner end of the engagement portion 25a in the engagement groove 25, so the operation knob 1
1 can be rotated. There, operation knob 1
1 in the clockwise direction in FIG. 2, the guide shaft 17 is inserted into the first guide hole 23 and the rotating roller 2
1 fits into the linear groove 22a of the guide groove 22, angular displacement of the actuating plate 100 is prevented, and therefore the guide shaft 17 of the second guide pin 37 supporting the rotating roller 36
The rotating roller 36 pushes the actuating plate 10 forward along the moving direction 18 in accordance with the rotation thereof.
As shown in FIG. 11, when the actuating plate 10 moves forward until the guide shaft 17 is located at the rear end of the first guide hole 23 and the rotary roller 21 is located at the rear end of the linear groove 22a in the guide groove 22, The shield plate 3 is in the loosened position R, and the shield plate 3 is separated from the seal member 8. Moreover, when the shield plate 3 moves along the moving direction 18, the shield plate 3
At least the right end portion of the cap body 1 is connected to the cap body 1 via the second hinge mechanism 7.
Therefore, even if the tightening mechanism 5 is disposed only on the left side of the cap body 1, the shield plate 3 can be moved without being bent much, and the number of parts can be reduced.

Even after the shield plate 3 reaches the loosened position R, the operation knob 11
If you continue to rotate clockwise in Fig. 2, the rotating roller 21
has reached the arcuate groove portion 22b in the guide groove 22, so the actuating plate 10 is pushed by the rotating roller 36 and moves toward the guide shaft 1.
7, and when the rotary roller 21 reaches the end of the arcuate groove 22b as shown in FIG. 12, the shield plate 3 is at the open position 0.

When the shield plate 3 rotates from the loosened position R to the open position 0, no matter what position the shade plate 4 is in before the shield plate 3 rotates, the lower end of the shade plate 4 is When it reaches the same position as the lower end of the shield plate 3, it rotates upward according to the shield plate 3. That is, when the shield plate 3 is rotated from the loosened position R to the open position 0, the lower end of the regulation hole 70 in the support plate 62 is aligned with the support plate 6.
When the support plate 6 is in contact with the regulating pin 77 provided on the
The regulating pin 71 and the support plate 6
6 is also rotated upward, so that the shade plate 4 is never located below the shield plate 3.

To return the shield plate 3 from the open position 0 to the tightened position T, either rotate the operating knob 11 counterclockwise as shown in Figure 2, or pull the shield plate 3 and shade plate 4 downward by hand. Bye. By doing so, the state shown in Fig. 12 described above can be changed to
Since the state shown in Figure 1 is the loosened position R, the operating knob 1
1 further counterclockwise in FIG. As a result, the second stopper pin 42 fits into the guide portion 25b of the engagement groove 25, and by moving within the guide portion 25b, the spring 4
3 is contracted, the operating bottle 40 is pulled inward in the radial direction of the operating knob 11, and the second stopper pin 42 is inserted into the engagement groove 25.
When the second stopper pin 42 reaches the engaging portion 25a at , the second stopper pin 42 engages with the retaining portion 25a due to the spring force of the spring 43. Moreover, the operating plate 1 changes from the state shown in FIG. 11 to the state shown in FIG.
0 retreats, the shield plate 3 comes into pressure contact with the seal member 8, and the tightening is at position T.

C4 Effects of the Invention As described above, according to the present invention, the shade plate is connected to the cap body so as to be rotatable between the closed position covering the front of the shield plate and the open position above the cap body, and the shield In order to regulate the relative rotation of the plate and the shade plate, the shield plate is provided with an arc-shaped regulation hole centered on its rotation axis, and the shade plate is provided with a regulation pin that fits into the regulation hole. Therefore, it is possible to eliminate glare by covering the front of the shield plate with a shade plate, and it is also possible to open the shade plate independently, and when the shade plate is in the closed position, the shield plate follows the shade plate. can be activated to close.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a side view in the direction of the ■ arrow in FIG. 1, and FIG. 3 is a side view in the direction of the Figure 4 is an enlarged sectional view taken along line IV-IV in Figure 2, Figure 5 is a sectional view taken along line ■-v in Figure 4, and Figure 6 is an enlarged sectional view taken along line IV-IV in Figure 2.
7 is an enlarged sectional view taken along the line ■-■ in FIG. 10 is an exploded perspective view of the portion shown in FIG. 9, and FIGS. 10 and 11 are sectional views corresponding to FIG. 5 for sequentially showing the operating state. l...cap body, 2...window, 3...shield plate, 4...
...Shade plate, 70...Regulation hole, 71...Regulation pin H...Helmet patent application Hito Shoei Kako Co., Ltd.

Claims (1)

[Claims] In a helmet shield device in which a transparent shield plate is connected to the cap body to open and close a window provided on the front side of the cap body, the cap body has two positions: a closed position that covers the front of the shield plate, and an open position above the cap body. A shade plate is rotatably connected between the shield plate and the shade plate, and in order to restrict relative rotation between the shield plate and the shade plate, the shield plate is provided with an arc-shaped regulation hole centered on its rotation axis, A helmet shield device, wherein the shade plate is provided with a regulation pin that fits into the regulation hole.