JPH026608A - Shield-attaching device for helmet - Google Patents

Abstract

PURPOSE:To improve operability in operation of one action by escaping a shield from a recessed part 3 by turning the shield forward using the front upper part as a support when the shield is pushed up. CONSTITUTION:When the front upper part of a shield 4 is pushed up forward in fully closed state of the shield 4, the front upper part is brought into contact with the upper edge of window hole of a shell 1 and the front lower part of the shield is turned forward using the contact part as a support and side part of the shield is turned diagonally downward to escape the shield from the recessed part 3. Then when the shield is further pushed up, the open angle is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a helmet shield attachment device applied to a full-face helmet or the like.

[Prior art] In order to minimize air resistance, full-face helmets, which are mainly used by motorcycle users, are designed so that when the shield is fully closed, it is flush with the outer circumferential surface of the shell that forms the outer shell of the helmet. It is known what has been done.

In such a format, for example, Japanese Patent Application Laid-Open No. 61-174406
As shown in the publication, when fully closed, the shield is housed flush in a recess provided on the outer surface of the window hole, and conversely, the shield can be rotated vertically to open the window hole. When doing so, the shield is moved forward and outward of the shell to escape from the recess.

[Problems to be Solved by the Invention] By the way, in the conventional shield mounting device, when adjusting the opening/closing angle of the shield, the shield is first pulled forward to escape from the recessed part of the shell, and then the shield is rotated upward. Because of this necessity, the operating direction of the shield was inevitably divided into two directions: forward and upward.

Therefore, the present invention provides a helmet shield attachment device that allows the operation direction for removing the shield from the four parts and the operation direction when pushing up to adjust the opening angle of the shield to be performed in almost the same direction. The purpose is to provide.

[Means for Solving the Problems] In order to solve the above problems, the helmet shield attachment device according to the present invention prevents the front upper part of the shield from coming into contact with the upper edge of the window hole of the shell when the shield is removed from the four parts. The shield is characterized in that the shield is configured to rotate forward using the contact portion as a rotation fulcrum.

[Operation of the invention] In the helmet shield attachment device according to the present invention, when the front lower part of the shield is pushed forward in the fully closed state, the front upper part of the shield comes into contact with the upper edge of the window hole of the shell, and this The lower front portion of the shield rotates forward about the contact portion as a fulcrum, and the side portions of the shield rotate diagonally downward, allowing the shield to escape from the recess. If you then push the shield further up, the opening angle will be adjusted.

[Example code] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Figure 1 is a schematic side view of the helmet as a whole, with the shield closed. A four part 3 is provided on the outer surface side of the peripheral edge of the window hole 2 of the shell 1, and the shield 4 is fitted into the recess 3 between the outer peripheral surface of the shell 1 and the road surface, and is secured to the front surface by the shield stopper 1a provided on the upper edge of the window hole 2. The upper edge 4a is abutted and locked.

The shield 4 is attached to the shell 1 via a support mechanism 5, and when it rotates, it escapes from the recess 3 toward the front and outside of the shell 1, and can be stopped at a predetermined rotation position by a click operation.

2 is a sectional view of the main parts of the support mechanism 5 shown in FIG. 1, FIG. 3 is an exploded perspective view showing the components of the support mechanism 5, and FIGS. 4 and 5 show a part of the support mechanism 5. FIG.

As shown in FIGS. 2 to 5, the support mechanism 5 is constructed by fixing to the shell 1 and having a base plate 6 as a base body. The base plate 6 is fixed to the mounting holes 9 of the shell 1 by set screws 8 suitable for the mounting holes 7 at the upper and lower ends. A pair of first and second engaging grooves 10.11 are formed on the surface of the base plate 6 adjacent to each other in the front-rear direction of the shell 1 (the left-right direction in the figure). The main portions of each of the retaining grooves 10.11 are approximately in the same 7-shape, and the upper ends of each groove main portion are connected to each other, and as shown in FIGS. 2 and 4, The rear upper end corner portions 10a and lla are each formed to be longer toward the rear side and deeper than the other portions. Furthermore, steps 10b and llb are formed on the bottom surface of the 7-shaped portion. The front upper end corner portion 10c of the first engagement groove 10 on the front side extends upward in a circular shape. Second retaining groove 1 on the rear side
The front upper end corner portion 11c of the first retaining groove 10 has an arc-shaped click groove 12 centered on the front upper end corner portion 10c of the first retaining groove 10.
are arranged in series, and a click step 12a is formed on the bottom surface of the click groove 12. Furthermore, a vertically elongated guide hole 13 is formed in the base plate 6 and is located below the valley portion 10d of the first engagement groove 10.

On the other hand, the shield 4 has each engagement groove 10 of the base plate 6.
．． Engagement pin 14.15 consisting of a stepped screw that engages with 11
is inserted. Each of the engaging pins 14.15 is inserted into a mounting hole 16.17 provided at the side end of the shield 4, and is fixed on the back side of the shield 4 with a nut 18.19 via washers 18b, 19b. In addition, each nut 18.
Reference numeral 19 has a stepped shape with narrow diameter portions 18a and 19a on the shield 4 side, and a male screw portion formed in the middle of each engagement pin 14.15 is an acid screw formed in the narrow diameter portions 18a and 19a. and each tip of the engaging pin 14.15 is connected to the nut 1.
It stands out from 8.19.

Further, first and second rotating arms 20.21 are attached to each nut 18.19 with the narrow diameter portions 18a, 19a as axes, and a cover plate 22 is attached between each rotating arm 20.21 and the shield 4. is interposed. cover plate 22
is elastically pressed against the base plate 6 side. That is, as shown in FIGS. 3 and 5, one end (small diameter side) of a tension spring 24 in the shape of a deformed coil is attached to a pair of bosses 23 protruding from the base plate 6 by thermal caulking or the like, and the other end ( Large diameter side) is cover plate 2
This is because it is locked to the surface side of the spring mounting hole 25 of No. 2. At this time, each rotating arm 20.21 is also pressed against the base plate 6 side by the cover plate 22.

Also, the side ends of the shield 4 are connected to each rotating arm 20.21.
an engaging pin 14.1 which is coupled with a nut 18.19 integral with the
5 toward the base plate 6, and the tips of each engagement pin 14.15 are pressed against the bottom surface of each engagement groove 10.11.

Here, the configuration of the rotating arm 20.21 will be explained. One first rotating arm 20 has a shaft hole 2 bored at one end thereof.
6 is supported by a nut 18 and is rotatable about one end thereof. Further, a retaining protrusion 27 protruding from the back side of the other end is inserted into the guide hole 13 of the base plate 6, and is urged to move upward in the guide hole 13 by a torsion coil spring 28. The torsion coil spring 28 is wound around a hose 29 protruding from the base plate 6, and one end is locked to the base plate 6, and the other end is locked to the engagement protrusion 27 of the first rotating arm 20.

The other second rotating arm 21 has mounting holes 30 and 31 at both ends.
is bored and is pivotally supported by nuts 18, 19 through these mounting holes 30, 31.

Next, the operation will be explained with reference to FIGS. 1, 2, and 6 to 10. As shown in FIGS. 1 and 2, when the shield is fully closed, each engagement pin 14, 15 is connected to each engagement groove 10.
11 are engaged with the deepest rear upper corner portions 10a and lla, respectively. In this state, the surface of the shield 4 is flush with the surface of the shell 1, and the rear upper corner portion 10a is flush with the surface of the shell 1.
, 11a extend rearward and the shield 4 is pressed against the base plate 6 by the elasticity of the tension spring 24 and the torsion coil spring 28, so that the shield 4 does not play.

FIG. 6 shows a state in which the lower part of the shield 4 is pulled out slightly forward. That is, when the front lower part of the shield 4 is pushed diagonally upward with a finger, the front upper edge 4a of the shield 4 is pushed up.
comes into contact with the shield stopper 1a, and the lower part of the shield 4 begins to rotate slightly forward using this part as a fulcrum, and the engagement pin 14.15 follows the rear side (right side) of the engagement groove 10.11, and The first rotating arms 20 begin to move down inside the guide holes 13 against the torsion coil springs 28, and eventually the engagement pins 15 ride on the shallow parts of the engagement grooves 11 shown in FIG. 14 similarly moves in the engagement groove 10). As a result, the side portion of the shield 4 escapes outward from the recess 3 of the shell 1, as shown by the imaginary line in FIG. When the shield 4 is further rotated, the engagement pins 14 and 15
When the finger is released after climbing over the steps 10b and llb in the engagement groove 10.11, it will stop at that position. This is the state shown in the virtual line position in FIG. 2 (only the engaging pin 15 side is shown) and in FIG. In this state, outside air can be ventilated into the inside of the helmet.

After this, the shield 4 is further rotated, and the retaining pin 14.
15 reaches the trough 10d and lid of the engagement groove 10.11 as shown in FIG. 8, the torsion coil spring 2
Since the first rotating arm 20 is pushed up by the repulsive force of 8, the engagement pin 14.15 moves to the front side of the engagement groove 10.11 and tries to rise automatically. As a result, 7
The locking pin 14.15 is secured by the letter-shaped locking groove 10.11.
As a result, the entire shield 4 moves forward, the front upper edge 4a of the shield 4 comes off the shield stopper 1a forward, and the entire shield 4 escapes from the recess 3, resulting in the state shown by the imaginary line in FIG. 8.

FIG. 9 shows that the shield 4 is completely removed from the recess 3 of the shell 1, and the engagement pins 14 and 15 are inserted into the engagement grooves 10 and 11, respectively.
The figure shows a state in which the front upper end corner portion 10c, llc has been reached and stopped. Since the torsion coil spring 28 contributes to the state change from FIG. 8 to FIG. 9, the shield 4 can be smoothly rotated to the open state. In this state, the shield 4 not only completely escapes forward and outward from the recess 3 of the shell 1, but also is pushed far forward than the front part of the shell 1. can be freely rotated upward and opened without making sliding contact with the shell 1. This rotation is performed using the engagement pin 14 as a fulcrum, and the engagement pin 15 moves into the click groove 12. A click step 12a is formed on the bottom surface of the click groove 12, and the engagement pin 15 is pressed against the bottom surface of the click groove 12 by the action of the tension spring 24, so that the rotation of the shield 4 is stopped at an arbitrary opening angle. It can be kept in that state.

FIG. 10 shows the shield 4 in a fully open state, and the engagement pin 15
is located at the bottom of the click groove 12.

Figure 11 shows that the shield 4 is then returned to the state shown in Figure 9.
It shows a state where it is pushed further back a little. At this time, when the engagement pin 14 reaches a position behind the groove 10e, the torsion coil spring 28 contributes to the engagement pin 14.
．． 15 move smoothly rearward along the front and rear connecting portions of the engagement grooves 10 and 11, respectively. Then, if the shield 4 is continued to be pushed rearward, the tension spring 24 will contribute, and each engagement pin 14.
0a and lla, and the shield 4 is accommodated flush with the recess 3, resulting in the fully closed state shown in FIG. 1.

According to this embodiment, when the shield 4 is in the fully closed state, it is accommodated in the recess 3 in a flush state and there is no wobbling.
I was disappointed in the wearability.

Furthermore, when the shield is rotated, by simply pushing up the front lower end diagonally forward, the side ends of the shield easily spread outward, and then protrude forward due to the spring force and completely escape from the recess 3. , the operation at the beginning of opening is extremely easy.

After that, the rotation angle can be adjusted freely by clicking. Moreover, these series of operations can be realized with a simple configuration using a small number of parts.

[Effects of the Invention] In the helmet shield attachment device according to the present invention, when the shield is pushed up, the shield rotates forward using its front upper part as a fulcrum and escapes from the four parts. The operating direction in which the shield is pushed up to escape is almost the same as the operating direction in which the shield is pushed up to adjust the opening/closing angle.

As a result, the operation can be performed in one action, thereby improving operability.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is an overall configuration diagram of the helmet with the shield fully closed, and Fig. 2 is the II-II of Fig. 1.
Fig. 3 is an exploded perspective view of the component parts, Fig. 4 is a plan view of the base plate, Fig. 5 is a sectional view of the shield pressure welding spring part, and Figs. 6 to 10 are the shield rotation. FIG. 11 is an explanatory diagram showing the operation sequentially, and FIG. 11 is an explanatory diagram showing the return state to the closed state. (Explanation of symbols) 1...Shell (shell), 2...Window hole, 3...Recess, 4...Shield, 6...Base plate, 10
．． 11...Engagement groove, 14.15...Engagement pin, 24
...Tension spring, 28...Torsion coil spring.

Claims (1)

[Claims] It comprises a shell in which a recess is formed on the outer surface of the peripheral edge of the window hole, and a shield that is attached to the window hole so that its opening/closing angle can be adjusted, and is substantially flush with the outer peripheral surface of the shell when the window hole is fully closed. In a helmet shield attachment device that stores a shield in the recess and allows the shield to escape from the recess when opening the window hole, when the shield escapes from the recess, the front upper part of the shield and the window hole of the shell A helmet shield attachment device, characterized in that the shield is configured to rotate forward using a portion in contact with an upper edge as a rotation fulcrum.