JP3506372B2 - Helmet shield support structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a full face type for protecting a head and a face when riding on various moving vehicles such as motorcycles and four-wheeled vehicles or moving equipment. More particularly, the present invention relates to an improvement in a shield mounting structure having an appearance in which the outer surface of the shield is substantially flush with the outer surface of the cap when the shield is fully closed. 2. Description of the Related Art A step portion for receiving at least a shield is formed at a position where a shield is attached to a cap, and when the shield is fully closed, an outer surface of the shield is substantially flush with an outer surface of the cap. A shield support structure has already been proposed, for example, in Japanese Utility Model Laid-Open No. 22229/1990. In this invention, when the shield is fully closed, the shield is fitted to the step (the step in the publication) so that the outer surface of the shield (the outer surface in the publication) and the outer surface of the cap body (the outer surface in the publication) are flush. ing. When the shield is pushed forward from this state, the ratchet mechanism provided on the left and right sides of the cap body slides the front side of the shield forward and out of the step, and the left and right sides of the shield slide right and left outside. As a result, the shield can be pushed upward and fully opened. To bring the shield to the fully closed state again, the shield is pushed down and pushed back, so that the shield fits the step and the outer surface of the shield is flush with the outer surface of the cap. With this configuration, an attempt is made to achieve the objects of suppressing wind noise caused by traveling wind and preventing rainwater from entering the helmet. As shown in FIG. 12, the ratchet mechanism of the present invention comprises a ratchet pedestal 100, a ratchet inner rotating body 200, a shield holder 300, a ratchet outer rotating body 400, a detent. Washer 500, bolt 600, ratchet cover 70
0, and these members are arranged coaxially on both sides of the cap 800 in a superposed manner. As described above, this ratchet mechanism includes a number of constituent members,
By arranging in a coaxial line on both sides of 0
Since the ratchet mechanism has a considerable thickness, it is necessary to protrude the cap body inward by the thickness of the ratchet mechanism so as to be recessed. [0004] However, in this case, it is necessary to reduce the thickness of the shock absorbing liner that absorbs a shock to the wearer's head by an amount corresponding to the protruding inward of the cap, so that the safety for the wearer is reduced. Cannot be provided. As a method of securing the thickness of the shock absorbing liner, the shock absorbing liner may be formed as a thickness obtained by adding the thickness of the shock absorbing liner from the beginning to the inside of the cap body, in this case, in proportion to the thickness of the shock absorbing liner Since the cap body becomes large, which causes an increase in the size and weight of the helmet itself, it is not possible to provide a good wearing comfort to the wearer. That is, the invention described in the publication can solve the problem of suppressing wind noise caused by the traveling wind only after sacrificing the shock absorption, aerodynamic characteristics and wearing comfort of the helmet to some extent. [0005] In view of the above, the present invention is intended to suppress the wind noise caused by the running wind while ensuring the shock absorption and aerodynamic characteristics of the helmet and the good wearing comfort. An object of the present invention is to newly provide a shield support structure having an effect of preventing the shield from falling off by being caught on a road surface or the like. [0006] The technical means adopted by the present invention to achieve the above object is a seal of the cap 1.
At least the shield 2 and the shield
Member 4 having support shafts 11L and 11R for supporting
Equipped with a step 3 for receiving L and 4R, when the shield is fully closed
The outer surface of the shield 2 is substantially flush with the outer surface of the cap body,
The shield 2 supported by the support shafts 11L and 11R
Screw mounting parts 21L and 21R are attached to the support shafts 11L and 11R.
By rotating about the rotation axes CL and CR
In the support structure in which the shield 2 is opened and closed, the support shaft 2 is
The center of one support shaft (11L in the drawing)
C1L is located behind the rotation axis CL, and the support shaft 11L is
When moved forward, the axis C1L of the support shaft 11L becomes the rotation axis CL.
When the shield 2 is fully closed, the axis C1L of one support shaft 11L is located behind the rotation axis CL. From this state, the shield 2 is moved forward, The axis C1L of the shaft 11L is changed to the rotation axis CL.
When the shield 2 escapes from the step 3 on the front side of the cap body when it is moved forward to a position concentric with the
L, 21R are mounted on the slope portions 5L, 5R provided on the base members 4L, 4R, and the shield mounting portions 21L,
The support structure of the shield in the helmet is characterized in that 21R expands outward and escapes from the step 3 on the side of the cap. (Claim 1) The construction of the shield support structure of the present invention will be described. As shown in FIGS. 1 to 4, a support shaft 11L for rotatably supporting a shield 2 is moved back and forth by a base member 4L. It is supported as much as possible. On the other hand, the support shaft 11R is the base member 4R.
Fixed to. The step portion 3 has a depth such that the outer surface of the cap 1 and the outer surface of the shield 2 are substantially flush when the shield 2 is received. The position behind the support shaft 11L is the position where the shield 2 is received in close contact with the step portion 3 as shown in FIG. 1, and the position in front is the shaft of the support shaft 11L as shown in FIG. This is a position where the center C1L and the rotation axis CL are concentric. The rotation axes CL and CR are positions at which the shield 2 is rotated up and down as shown in FIGS. 7 and 8. When the axis C1L of the support shaft 11L and the rotation axis CL are concentric, the front side of the shield 2 is moved. This is a position where the user escapes from the step portion 3. The slope portions 5L and 5R are provided with base members 4L and 4R.
And projecting toward the left and right outer sides, and the slope 51
When the shield 2 is rotated upward, the shield mounting portions 21L, 21R are expanded in the left and right outer directions along the slopes 51L, 51R. or,
The height of the slopes 5L and 5R is determined by the height of the shield mounting portion 21L,
When 21R reaches the vertices 52L and 52R of the slope portions 5L and 5R, the shield attachment portions 21L and 21R are moved to the stepped portions 3L.
It is height that can escape from. That is, the shield support structure of the present invention
As shown in FIGS. 1 to 4, in the fully closed state of the shield 2, the shield 2 is received by the step 3, and the outer surface of the cap 1 and the outer surface of the shield 2 are substantially flush. When the shield 2 is moved forward from this state, as shown in FIG. 5, the support shaft 11L supporting the shield 2 moves forward, and the axis C1L of the support shaft 11L and the rotation axis CL are concentric. At the same time, the shield 2 escapes from the step 3 on the front side,
The shield 2 can be turned upward. When the shield 2 is rotated upward from this state, as shown in FIGS. 6 to 9, the shield mounting portions 21L and 21R are lifted up on the slope portions 5L and 5R, and are widened to the left and right sides, and the step portions 3 are opened. Escapes from the full open state. To change from the fully opened state to the fully closed state, rotate the shield 2 downward,
Shield attachment parts 21L, 21 which have been expanded to the left and right outside
R is inclined by the return force from its own expansion,
Along R, it is received in the step 3 while being closed inward. Subsequently, when the shield is moved rearward from this state, the support shaft 11L moves rearward, and the axis C1 of the support shaft 11L is moved.
L is located behind the rotation axis CL and the shield 2
Is received by the step portion 3 on the front side and becomes a fully closed state. As described above, the shield support structure of the present invention enables one of the shield support shafts 11L normally provided in the helmet to move back and forth, and the rotation axes CL, Slope 5 ahead of CR
Since the shield 2 is made to protrude and retract from the step portion 3 by projecting the L and 5R, the outer surface of the shield 2 and the outer surface of the cap 1 are substantially flush with both sides of the cap 1. What is necessary is just to secure a dent of a certain depth. Therefore, the support structure of the present invention requires only an extremely shallow depression about the thickness of the shield as compared with the depression of the thickness of the ratchet mechanism in the support structure described in the above-mentioned publication. Since the protrusion to the inside of the body can be reduced, the thickness required for safety in the shock absorbing liner can be secured without increasing the size of the cap body.
In the above description, the left support shaft 11L is moved back and forth, but the present invention is not limited to this, and it is intended that one of the right and left support shafts be moved back and forth. May be moved back and forth. As means for further improving the effectiveness in suppressing wind noise and preventing the shield from falling off, both shield mounting portions 21L and 21R are pressed against the cap body 1 from the outside. Holder 6 to hold
L, 6R on the left and right, and the shield holders 6L, 6R
The holding force of the helmet utilizes the return reaction force of the shield holders 6L and 6R. According to this support structure, as shown in FIGS. 7 to 11, the shield holders 6L, 6R are moved to the left and right sides by the rightward and leftward expansion of the shield mounting portions 21L, 21R due to the upward rotation of the shield 2. While being spread
Between the outer surface of the cap 1 and the shield holders 6L, 6R, upwardly passing passage spaces 7L, 7R in the shield 2 are formed. When the shield 2 is rotated downward from the fully opened state, a return reaction force due to the shield holders 6L and 6R being pushed out to the left and right outer sides acts on the shield attachment portions 21L and 21R, and the return reaction force causes the shield attachment portions 21 and 21R.
L, 21R are pushed back to the step portion 3. In this support structure, when the shield 2 is fully closed, the passing spaces 7L, 7R are provided between the outer surface of the cap 1 and the shield holders 6L, 6R.
Since there is no R and the passage spaces 7L and 7R are formed for the first time by the upward rotation of the shield 2, the thickness of the shield holders 6L and 6R can be reduced by the passage spaces 7L and 7R. That is, the amount of protrusion of the shield holders 6L and 6R with respect to the cap body 1 is reduced, and the outer surface of the cap body 1 and the outer surfaces of the shield holders 6L and 6R are made substantially flush or nearly flat. Therefore, the wind noise generated by the shield holders 6L and 6R can be suppressed, and the effect of preventing the shield from falling off can be increased. An embodiment of the present invention will be described below. The helmet of this embodiment is a full face helmet. As shown in FIGS. 1 to 4, the helmet A includes a shock absorbing liner 7 made of a foam material and an interior material 8 inside a cap body 1 made of a fiber reinforced plastic material. Is provided with a shield 2 for closing the opening 1A. Further, a stepped portion 3 for receiving the shield 2 when fully closed is formed over the periphery of the opening 1A and the left and right sides of the cap 1, and the outer surface of the shield 2 is fully closed when the shield 2 is fully closed. It is received so as to be substantially flush with the outer surface of the cap body 1. 4L and 4R are base members fixed to the left and right outer surfaces of the helmet main body 1.
4R, the shield mounting portions 21L, 21 of the shield 2
The support shafts 11L and 11R that rotatably support the R and the shield 2 are rotated upward, so that the shield mounting portions 21L and 21R are rotated.
Slopes 5L and 5R are provided for expanding R to the left and right outer sides. Further, shield holders 6L, 6R for pressing the shield mounting portions 21L, 21R against the cap body 1 are hooked to the base members 4L, 4R. Shield holder 6
L and 6R are formed of a synthetic resin material having elasticity so as to cover the base members 4L and 4R and have an outer shape conforming to the step portion 3, and furthermore, the outer surface thereof is a cap 1
The surface is substantially flush with the outer surface of the device so that it is smoothly continuous without any level difference. The support shaft 11L has a mounting plate 12 formed on the upper side thereof. The mounting plate 12 is pivotally supported by a base member 4L so as to be rotatable in the front-rear direction. With this rotation, the shield mounting portion 21L slides in the front-rear direction. When the support shaft 11L is located at the rear, the axis C1L is located at the rear of the rotation axis CL.
1L is coaxial with the rotation axis CL. On the other hand, the support shaft 11R is
It is fixed to the base member 4R. Also, both support shafts 11L,
11R has a height in the axial direction such that the shield attachment portions 21L and 21R do not come off when the shield is opened in the fully opened state. The slope portion 5L is located forward of the rotation axis CL and protrudes outward, and is fitted into a long hole 22 long in the front-rear direction opened in the shield attachment portion 21L. An inclined surface 51L is formed on the inclined surface portion 5L so that the width of the distal end becomes narrower toward the outside in the axial direction. Slot 2
Numeral 2 is for restricting the forward and backward movement of the shield 2. When the shield 2 is in the fully closed state, the slope 5L contacts the front side edge of the long hole 22 and when the shield 2 is moved forward, The slope portion 5L contacts the rear edge of the elongated hole 22 to regulate the longitudinal movement of the shield 2. When the slope 5L is in contact with the rear edge of the elongated hole 22, the axis C of the support shaft 11L is
1L is coaxial with the rotation axis CL, and the front side of the shield 2 escapes from the step 3 in this coaxial state. That is, at this point, the shield 2 can be turned upward. As shown in FIGS. 2 and 5, the slope portion 5R is located above the support shaft 11R and along the arc of the support shaft 11R, and cuts off the shield mounting portion 21R supported by the support shaft 11R. Front end 212R
Is facing. The inclined surface 5R is formed on the surface facing the end portion 212R with an inclined surface 51R in which the width of the distal end becomes narrower toward the outside in the axial direction. The shield 2 can be moved from the above-described upper rotatable state.
When turned upward, as shown in FIGS. 7 to 11,
On the left side, the lower edge of the long hole 22 moves in the axial direction along the slope while contacting the slope 51L,
The shield mounting portion 21L expands outward, the long hole 22 is detached from the slope portion 5, and the shield mounting portion 21L is shifted to the slope portion 5L.
Of the shield mounting portion 21L
Escapes from the step 3. On the other hand, on the right side, the end 2
12R moves in the axial direction along the slope while in contact with the inclined surface 51R, so that the shield mounting portion 21R expands outward, and the end 212R becomes the vertex 52R of the slope 5R.
At this point, the shield mounting portion 21 </ b> R escapes from the step portion 3. And this expansion is performed by the shield mounting portion 21.
L, 21R push the shield holders 6L, 6R outward to the left and right to open the shield 2 between the inside of the shield holders 6L, 6R and the vertices 52L, 52R of the slopes 5L, 5R.
The shield 2 is fully opened by entering the passing spaces 7L and 7R while forming the passing spaces 7L and 7R of the upward rotation in FIG. In the fully opened state of the shield 2, the return reaction force of the shield holders 6L and 6R is acting on the shield attachment portions 21L and 21R, and the slope portions 5L and 5R.
At the apex 52L, 52R of R, the shield mounting portion 21L, 2
Pressing 1R. To change the shield 2 from the fully open state to the fully closed state, the opposite operation to the opening operation of the shield may be performed. In the downward rotation of the shield 2, the long hole 22 is formed on the left side by the inclined surface 5L. When it comes to the compatible position, the shield holder 6L
The return reaction force causes the long hole 22 to be fitted into the slope portion 5L, and the lower edge of the long hole 22 to move inward while being guided by the inclined surface 51L, so that the shield mounting portion 21L is fitted to the step portion 3. Accepted. On the other hand, on the right side, the end 21
When 2R comes to the inclined surface 51R from the vertex 52R of the inclined portion 5R, the return reaction force of the shield holder 6R causes the end portion 21R.
2R moves inward while being guided by the inclined surface 51R,
The shield attachment portion 21 </ b> R is received by the step portion 3. Then, when the shield 2 is moved rearward from this state, the support shaft 11L rotates rearward and the axis C of the support shaft 11L is moved.
1L deviates from the rotation axis CL, and the front side of the shield 2 is also received by the step portion 3, so that the outer surface of the shield 2 and the outer surface of the cap 1 are substantially flush. In the figure, reference numeral 10 denotes an operation unit for operating the shield to move back and forth and turn up and down.
To move the shield 2 back and forth and rotate vertically. Reference numerals 9L and 9R denote operating levers used to remove the shield 2. The operating levers protrude when the shield 2 is fully opened, and when the protruding operating levers 9L and 9R are turned upward, the shield mounting portions 21L and 21R. Are further expanded and disengaged from the support shafts 11L and 11R, and the shield holders 6L and 6R are further pushed and expanded.
Pull out the shield attachment portions 21L, 21R from L, 7R. In addition, about the support structure provided with this operation lever,
Since the application has already been filed and registered by the present applicant, a detailed description of its specific configuration and operation will be omitted. (Patent Registration No. 3045718) Also, in the present embodiment, an example of a full face helmet has been described, but this mounting structure can also be implemented in a jet type helmet. As described above, the support structure of the shield according to the present invention has a structure in which the recesses on the left and right side surfaces of the cap can be made extremely shallower than the structure described on the rear side. Overhang to the inside of the cap body can be reduced. Therefore, the outer surface of the shield and the outer surface of the cap can be made substantially flush with each other without reducing the thickness of the shock absorbing liner and increasing the size of the cap, thereby ensuring the safety and good wearing comfort of the helmet. In addition, it contributes to the suppression of the wind noise caused by the traveling wind and the prevention of the stepped portion such as the shield from falling off the road surface or the like in the event of a fall. Moreover, compared to the ratchet mechanism described in the publication, the number of parts is small and the configuration is extremely simple, so that it greatly contributes to cost reduction and maintenance is easy. Further, the shield can be opened and closed with one hand because the front side of the shield escapes from the step and can be rotated up and down by the longitudinal movement of one of the right and left support shafts.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a left side view of a helmet. FIG. 2 is a right side view of the helmet. FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 1; FIG. 4 is a sectional view taken along line (4)-(4) in FIG. 2; FIG. 5 is a sectional view taken along line (5)-(5) of FIG. 2; FIG. 6 is a left side view showing a state where the shield is moved forward. FIG. 7 is a left side view showing a state where the shield is rotated upward. FIG. 8 is a right side view showing a state where the shield is rotated upward. FIG. 9 is a sectional view taken along line (9)-(9) of FIG. 7; FIG. 10 is a sectional view taken along line (10)-(10) of FIG. FIG. 11 is a sectional view taken along line (11)-(11) of FIG. 8;
FIG. 12 shows a conventional support structure. [Description of Signs] 1: Cap 2: Shield 3: Stepped portion 4L, 4R: Base member 5L, 5R: Slope 6L, 6R: Shield holder 11L, 11R: Support shaft 21L, 21R: Shield mounting portion CL, CR ： Rotating axis C1L ： Axis

Claims (1)

(57) [Claims 1] At least at the shield mounting position of the cap body,
Base with shield and support shaft to support shield
Equipped with a step to receive the member.
The outer surface of the field is substantially flush with the outer surface of the cap body,
The shield mounting part of the shield supported by the
The shield opens by rotating around the rotation axis
In the closed support structure, when the support shaft is located rearward , the axis of the support shaft is located after the rotation axis.
And the axis of the spindle rotates when the spindle is advanced.
The shaft is configured so as to be coaxial with the axis, and when the shield is fully closed, the axis of one of the spindles is located behind the axis of rotation, and the shield end on the spindle side is moved forward to support the axis. When the axis of the shaft is advanced to a position that is concentric with the rotation axis, the shield escapes from the step on the front side of the cap, and when the shield is turned upward from this escaped state, the left and right shield mounting parts are A shield support structure for a helmet, wherein the shield mounting portion is mounted on a slope provided on a member so that a shield attachment portion expands outward and escapes from a step portion on a side surface of a cap body.