JP2005105454A - Helmet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a helmet having a structure enabling a shock-absorbing liner to be easily assembled at an accurate position on the shell body. <P>SOLUTION: The shock-absorbing liner has a bottom 21 on the surface 18 of an interior pad side as a curved convex surface. In this liner, a plurality of wall parts 23... are erected on the bottom 21 toward the surface 19 on the shell body side as a curved concave surface, and the curved concave inner surface of the shell body 11 is provided with engagement parts 25 engageable with the respective tips 24 of the wall parts 23... <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a helmet capable of easily and accurately assembling a liner to a shell body.

A helmet that protects the head is generally a multilayer structure in which a foam reinforced plastic shock absorbing liner is provided in a fiber reinforced resin shell, and a sponge internal pad is provided in the shock absorbing liner. . Among them, the impact absorbing liner is an important member that absorbs impact energy, and a technique for replacing foamed polystyrene has been studied, and one of them has been proposed to adopt a honeycomb (see, for example, Patent Document 1).
JP-A-9-105013

FIG. 19 is a reprint of FIG. However, part of the element name was changed, part of the element name was added, and the code was reassigned.
This shows that a honeycomb block 104 composed of a large number of honeycombs 102 formed of a thin plate material 103 is attached to the shell body 101 of the helmet 100.

  In order to manufacture a honeycomb block 104 composed of a large number of honeycombs 102, thin plates having different thicknesses are stacked in a coil shape at both ends, and the thin plates are fixed at predetermined positions and expanded to form a honeycomb block 104 having a given shape. Assembling as a liner inside the shell body 101 of the helmet 100.

  In order to assemble the formed honeycomb block 104 as a liner inside the shell body 101, conventionally, after an operator applies an adhesive to the inside of the shell body 101, the honeycomb block 104 is set at a predetermined position and assembled. A method of fixing to the shell body 101 by attaching is generally adopted.

  However, since the convex side of the honeycomb block 104 is stuck toward the inside of the shell body 101, it is not easy to accurately determine the position where the honeycomb block 104 is attached. If the position where the honeycomb block 104 is attached can be accurately determined without any deviation, the wearer can obtain a more comfortable wearing feeling.

  Further, since an adhesive is generally used for fixing to the shell body 101 and many of the surfaces to which the honeycomb block 104 is bonded are openings, the adhesive facing the openings of the honeycomb block 104 does not act on the shell body 101. Most of the adhesive applied to fix the honeycomb block 104 is wasted. It is preferable if the honeycomb block 104 can be fixed without wasting the adhesive.

  An object of the present invention is to provide a helmet capable of easily and accurately assembling an impact-absorbing liner on a shell body.

  The invention according to claim 1 is a helmet comprising a shell body, an impact absorbing liner provided inside the shell body, and an interior pad that is provided inside the impact absorbing liner and contacts the head, wherein the impact absorbing liner is curved. The interior pad side surface, which is a convex surface, has a bottom portion, and a plurality of wall portions are erected from the bottom portion toward the shell body side surface, which is a curved concave surface. And a fitting portion that can be fitted together.

The fitting part which can be fitted with the front-end | tip part of the some wall part stood on the bottom part of the impact-absorbing liner was provided in the recessed part inner surface which the shell body curves.
Since the tip of the wall part and the inner surface of the concave part of the shell body can be fitted together, it is easy to position the shock absorbing liner on the shell body, and the shock absorbing liner and the shell body are also accurately connected. be able to.

  As a result, the quality of the helmet is more stable, and the variation in wearing feeling can be greatly reduced. Further, since the fitting with the shell body is performed at the tip of the wall portion, it is not a complicated fitting work, and the assembling workability is improved.

  In the invention according to claim 2, the groove width of the fitting portion formed on the inner surface of the curved concave portion of the shell body is larger than the thickness of the tip portion of the wall portion of the shock absorbing liner fitted to the fitting portion. It is characterized by being set small.

The groove width of the fitting portion formed on the inner surface of the concave concave portion of the shell body was set smaller than the thickness of the front end portion of the wall portion to be fitted with the fitting portion.
The thickness of the front end portion of the wall portion to be fitted with the fitting portion is slightly increased with respect to the groove width of the fitting portion, and press-fitted. By press-fitting, the impact-absorbing liner can be firmly fixed to the shell body without using an adhesive. When an adhesive is used for fixing, the amount of adhesive used can be greatly reduced, and the cost can be reduced.

  The invention according to claim 3 is a fitted portion that is assembled with a plurality of wall portions in a lattice shape, and is fitted to the fitting portion on one of the four wall portions that constitute a grid. Is provided.

A fitting portion to be fitted to the fitting portion was provided on one wall portion of the four wall portions constituting the grid of the lattice assembled in a lattice shape.
The fitted portion is a wall portion provided for each grid, and the fitting portion is not biased depending on the part of the helmet, so that the impact absorbing liner can be firmly fixed.
Moreover, since the length of a fitting part can be shortened, the assembly | attachment to the shell body of an impact-absorbing liner can be performed more simply.

The invention according to claim 4 is characterized in that one of the four wall portions is a wall portion extending in the left-right direction of the helmet.
Since the fitted portion is provided on the wall portion extending in the left-right direction of the helmet, in particular, it is possible to effectively prevent the shock absorbing liner from shifting in the front-rear direction.
Since it is possible to effectively prevent the impact absorbing liner from shifting in the front-rear direction, it is possible to reliably prevent the impact absorbing liner from shifting in the front-rear direction.

The invention according to claim 5 is characterized in that the wall portion extending in the left-right direction of the helmet is formed every other plurality of ridges arranged in the left-right direction.
Since the wall portions extending in the left-right direction, which are the fitted portions, are formed every other plurality of ridges arranged in the left-right direction, it is particularly possible to effectively prevent the shock absorbing liner from shifting in the front-rear direction.
In addition, the shell body can be firmly fixed.
Furthermore, since the length of the fitting portion can be shortened, the attachment to the shell body can be further simplified.

  In the invention according to claim 6, one of the four wall portions is a wall portion provided in the front-rear direction of the helmet, and the wall portion provided in the front-rear direction of the helmet is arranged in the front-rear direction. It is characterized in that it is formed every other plurality of trouts.

Since the wall portions extending in the front-rear direction, which are the fitted portions, are formed every other plurality of ridges arranged in the front-rear direction, it is particularly effective in preventing the shock absorbing liner from shifting in the left-right direction.
In addition, the shell body can be firmly fixed.
Furthermore, since the length of the fitting portion can be shortened, the attachment to the shell body can be further simplified.

  In the invention according to claim 1, since the fitting portion that can be fitted to the tip portions of the plurality of wall portions standing on the bottom portion of the shock absorbing liner is provided, the shock absorbing liner is accurately positioned on the shell body and easily. There is an advantage that assembly can be performed.

  In the invention which concerns on Claim 2, since the front-end | tip part of the wall part of the impact-absorbing liner fitted with the fitting part of a shell body was slightly enlarged, the usage-amount of an adhesive agent was used rather than before, without using an adhesive agent. There is an advantage that the shock absorbing liner can be firmly fixed while greatly reducing.

  In the invention according to claim 3, since one wall portion per grid is used as the fitted portion, there is no bias of the fitting portion due to the part of the helmet, and there is no bias of the shock absorbing liner to the shell body. There is an advantage that can be done.

  In the invention which concerns on Claim 4, since the to-be-fitted part was provided in the wall part extended in the left-right direction of a helmet, there exists an advantage that the shift | offset | difference of the front-back direction of an impact-absorbing liner can be prevented reliably.

  In the invention according to claim 5, since the wall portion extending in the left-right direction, which is the fitted portion, is formed every other plurality of ridges arranged in the left-right direction, in particular, the shock absorbing liner is prevented from shifting in the front-rear direction. This is advantageous in that it can be fixed to the shell body evenly.

  In the invention according to claim 6, since the wall portion extending in the front-rear direction, which is the fitted portion, is formed every other plurality of linings arranged in the front-rear direction, especially the shock absorbing liner is prevented from shifting in the left-right direction. This is advantageous in that it can be fixed to the shell body evenly.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a sectional view of a helmet according to the present invention.
The helmet 10 includes a helmet impact absorbing liner 12 integrally molded and assembled inside the shell body 11 and an interior pad 13 assembled inside the shock absorbing liner 12 as main elements. Reference numeral 14 denotes a windshield plate.

  FIG. 2 is an enlarged view of two parts of FIG. 1. The shock absorbing liner 12 has a bottom 21 on a surface 18 on the interior pad side that is a curved convex surface, and faces from the bottom 21 to a surface 19 on the shell body side that is a curved concave surface. A plurality of wall portions 23... (... indicates a plurality. The same applies hereinafter) from the bottom portion 21, and the distal end portions 24 of the wall portions 23. It shows that fitting portions 25... That can be fitted together are provided.

  The V-shaped portion provided on the wall portion 23... Standing from the bottom portion 21 of the liner 12 is a portion where a pair of oblique sides where V-shaped cuts are formed are welded to each other. Thus, it was expressed by a slightly V-shaped cut shape.

  3 is a cross-sectional view taken along line 3-3 of FIG. 1, and a plurality of wall portions 23... Are raised from the bottom portion 21 toward the surface 19 on the shell body side which is a curved concave surface from the bottom portion 21 of the shock absorbing liner 12. 11 are provided with fitting portions 25... That can be fitted with the end portions 24... Of the wall portions 23. And it shows that the front-end | tip part 24 ... of the wall part 23 ... was fitted to the fitting part 25 ... by the side of the shell body 11. FIG.

FIG. 4 is a perspective view of an impact absorbing liner (first embodiment) according to the present invention. In the perspective view of the impact absorbing liner, FR is the front direction of the helmet, RE is the rear direction of the helmet, and L is the left side of the helmet. Direction, R indicates the right direction of the helmet.
Of the tip 24 of the wall 23, a part of the tip 24 of the wall 23 that fits with the fitting part 25 on the shell body 11 (see FIG. 1) side is a fitted part 26 and is hatched.
That is, the fitting part 25 was provided in the shell body 11 (refer FIG. 1) side so that it might fit with the to-be-fitted part 26 shown with an oblique line part.

In the present embodiment, the portion excluding the outer peripheral portion of the front end portion 24 of the wall portion 23 is fitted to the fitting portion 25 as the fitting portion 26, but the fitting provided on the curved inner surface of the shell body 11 is curved. The position and length of the fitted part 26 formed on a part of the wall part 23 fitted to the joint part 25 can be arbitrarily set.
For example, the fitted portion 26 may be only at both end portions of the shock absorbing liner 12 or only at the center portion. It may be every other plural 28 arranged in the left-right direction of the shock absorbing liner 12, or every other plural 28 arranged in the front-rear direction.

FIG. 5 is a view for explaining the fitting to the shell body according to the present invention, and the groove width of the fitting portion 25 formed on the curved inner surface 19 of the shell body 11 is fitted to the fitting portion 25. This shows that the thickness is set smaller than the thickness of the tip 24 of the wall of the shock absorbing liner 12.
That is, the groove width of the fitting portion 25 formed on the inner surface 19 of the concave portion on the shell body 11 side is W1, the thickness of the tip end portion 24 of the shock absorbing liner 12 fitted to the fitting portion 25 is W2, and W1 is greater than W2. It was set to be slightly smaller so that W1 <W2.

  The distal end portion 24 of the wall portion 23 having a thickness W2 slightly larger than the fitting portion 25 having the groove width W1 is press-fitted into the fitting portion 25 having the groove width W1 formed on the inner surface of the curved concave portion of the shell body 11. . By press-fitting, the impact absorbing liner 12 can be firmly fixed to the shell body 11 without using an adhesive. When an adhesive is used for fixing, the amount of adhesive used can be reduced, and costs can be reduced.

FIG. 6 is a perspective view of the shock absorbing liner according to the present invention, and shows a partial structure of the molded body (helmet shock absorbing liner 12) immediately before being assembled to the shell body 11 (see FIG. 1).
Wall portions 23... Are vertically and horizontally arranged from the bottom portion 21, and the bottom portion 21 is divided into small bottom portions 31. And it curved so that the front side of a figure might become the convex curved shape so that the inner concave shape of the shell body 11 of a helmet might be met, and a part was welded.

  That is, in order to make the liner 12 into a convex curved shape, a wall welded portion 32... In which a pair of oblique sides forming V-shaped cuts of the wall portion 23. The bottom welding part 33 ... which fixed the edge | sides of the small bottom part 21 divided by the vertical and horizontal wall part was provided.

FIG. 7 is a diagram showing a molding step of the method of the present invention.
A mold 38 comprising a movable mold 35 having a cavity 34 corresponding to the shape of the molded body and a fixed mold 37 having a spool 36 for guiding the molten resin to the cavity 34 is prepared.
Then, by injecting the molten resin plasticized by the injection cylinder 39 into the cavity 34 through the spool 36, a mold forming step is performed to obtain a molded body.

FIG. 8 is a plan view of the molded body according to the present invention, and shows the molded body molded in the molding process.
The molded body 30 has vertical and horizontal wall portions 23 standing in front of the drawing from the bottom portion 21 at the back of the drawing.
And the wall part 23 has the vertical sides 41, 42, 43, 44... And the horizontal sides 45, 46, 47, 48.・ ・ Consists of And these vertical sides 41, 42, 43, 44 ... and horizontal sides 45, 46, 47, 48 ... were combined.

Moreover, the bottom part 21 consists of the small bottom parts 31 ... as mentioned above. And the small bottom part 31,31 ... was equipped with the cross-shaped groove part 51 ....
In addition, the front-end | tip part 24 ... of the wall part fitted with the shell body 11 was provided in the upper surface 22 of the wall part 23. As shown in FIG.

FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 8, and shows that a plurality of grooves 51... Are opened in the bottom 21 and the wall 23 is erected from the bottom 21 vertically and horizontally.
Further, V-shaped cuts 52... The V-shaped cuts 52, 52,... Have a pair of oblique sides 53a, 53b,.

  FIG. 10 is a perspective view of a part of the molded body according to the present invention, in which the bottom portion 21 is divided into small bottom portions 31... By a wall portion 23 standing vertically and horizontally. Each of the small bottom portions 31 is provided with a groove portion 51 having a substantially cross shape, and the wall portion 23 is provided with a V-shaped cut 52.

  FIG. 11 is an operation diagram of the V-shaped cuts according to the present invention, in which the molded body with the V-shaped cuts 52, 63, 64 is bent and formed into a shape having a predetermined curvature for each part. Explain that you can.

In (a), a V-shaped cut 52 with a cut angle of θ1 is put in the wall 23, and a V-shaped cut 63 with a cut angle of θ2 is put next to the wall 23, and the cut angle is similarly θ3. A certain V-shaped cut 64 is made.
Next, the wall portion 23 is curved so as to be convex upward as a whole. Due to this bending, the pair of hypotenuses 53a and 53b constituting the cut 52 are brought into contact with each other. Similarly, a pair of hypotenuses 65a and 65b constituting the cut 63 abut each other, and a pair of hypotenuses 66a and 66b constituting the cut 64 abut.

(B) shows that the V-shaped cuts 52, 63, 64 are in a single line by contacting a pair of oblique sides 53a and 53b, 65a and 65b, and 66a and 66b, respectively.
As a result, the lower edge of the wall portion 23 becomes a polygon bent at angles θ1, θ2, and θ3. Accordingly, the desired curvature can be obtained very easily by setting the angles θ1, θ2, and θ3.

FIG. 12 is an explanatory diagram of the molding body bending process, and a specific example of the bending process of the molding 30 will be described.
An upper die 67 having a concave surface 67a and a lower die 68 having a convex surface 68a are prepared. Next, the molded body 30 is placed on the lower mold 68 and the upper mold 67 is lowered.

  In this embodiment, the molded body 30 is curved by a mold, but the means is not limited to the mold as long as the hypotenuses of the V-shaped cuts of the molded body 30 can be set in contact with each other. For example, the molded body 30 may be curved and fixed with a jig or the like.

  FIG. 13 is an explanatory diagram of the heating process, in which the molded body 30 is bent in the molded body bending process, and a plurality of heats are arranged in the lower mold 68 in a state where the V-shaped cuts of the molded body are in contact with each other. Indicates that the body is exothermic.

  That is, the heating elements 71a, 71b, 71c arranged in the lower mold 68 are heated, and the joining portions of the small bottom portions 21... Exceed the melting point so that the small bottom portions 21. Heat. Similarly, the cut portion is heated to the melting point or higher so that the pair of oblique sides 53a and 53b, 65a and 65b, and 66a and 66b of the V-shaped cuts 52. Note that there is no restriction on the heating order and timing of the heating elements 71a, 71b, 71c of the lower mold 68.

  In this embodiment, the heating element 71 is disposed in the lower mold 68. In the molded body bending process, the position of the heating element 71 in the heating process may be arranged inside the mold / jig, on the surface of the mold / jig, or from the mold / jig. They may be arranged apart from each other, and there are no restrictions on the positions where the heating elements are arranged.

  FIG. 14 is a diagram showing another embodiment of FIG. 2. The shock absorbing liner 12 has a plurality of wall portions 23... Standing from the bottom 21 toward the surface 19 on the shell body side. The fitting part 25 ... which can be fitted with a part of the front end part 24 ... of the wall part 23 ... was provided.

Specifically, a part of the tip 24 of the wall portion on the side of the shock absorbing liner 12 is a small concave 73 having a concave shape, and the fitting portion 25. .. Indicates that the small protrusions 74 have small protrusions that can be fitted to the small recesses 73.
In this way, it is also possible to fit the small concave portions 73... And the small convex portions 74.

  FIG. 15 is a perspective view of an impact-absorbing liner (second embodiment) according to the present invention, in which a plurality of wall portions 23... It shows that the to-be-fitted part 26 fitted to the fitting part 25 (refer FIG. 2) was provided in one wall part 23 among these. That is, the portion indicated by the hatched portion in FIG.

A fitting portion 26 to be fitted to the fitting portion 25 (see FIG. 2) is provided on one wall portion 23 of the four wall portions 23 constituting the first and second lattices 28 assembled in a lattice shape.
The fitted portion 26 is a wall portion 23 provided per one grid 28 of the lattice, and since the fitting portion 25 is not biased by the portion of the helmet 10 (see FIG. 1), the shell body 11 (see FIG. 1). The shock absorbing liner 12 can be firmly fixed to the bracket.
Moreover, since the length of the fitting part 25 can be shortened, the assembly | attachment to the shell body 11 (refer FIG. 1) of the shock absorption liner 12 can be performed more simply.

FIG. 16 is a perspective view of an impact-absorbing liner (third embodiment) according to the present invention, and one of the four wall portions 23 extends in the left-right direction of the helmet 10 (see FIG. 1). It shows that it is the wall part 23 which exists. That is, the portion indicated by the hatched portion in FIG.
Since the fitted portion 26 is provided on the wall portion 23 extending in the left-right direction of the helmet 10, it is possible to effectively prevent the shock absorbing liner 12 from shifting in the front-rear direction.
Since it is possible to effectively prevent the shock absorbing liner 12 from shifting in the front-rear direction, it is possible to reliably prevent the shock absorbing liner 12 from shifting in the front-rear direction.

FIG. 17 is a perspective view of the shock absorbing liner (fourth embodiment) according to the present invention. The wall portion 23 extending in the left-right direction of the helmet 10 (see FIG. 1) is one of a plurality of bars 28 arranged in the left-right direction. It shows that it formed every other. That is, the portion indicated by the hatched portion in FIG.
Since the wall portions 23 extending in the left-right direction, which are the fitted portions 26, are formed every other plurality of the ridges 28 arranged in the left-right direction, it is particularly effective to prevent the shock absorbing liner 12 from shifting in the front-rear direction. Yes.

In addition, the fixing to the shell body 11 (see FIG. 1) can be performed without bias.
Furthermore, since the length of the fitting part 25 can be shortened, the attachment to the shell body 11 can be further simplified.

  FIG. 18 is a perspective view of an impact-absorbing liner (fifth embodiment) according to the present invention. One of the four wall portions 23 is provided in the front-rear direction of the helmet 10 (see FIG. 1). It is shown that the wall portions 23 provided in the front-rear direction of the helmet 10 are formed at every other plurality of ridges 28 arranged in the front-rear direction. That is, the portion indicated by the hatched portion in FIG.

Since the wall portions 23 extending in the front-rear direction, which are the fitted portions 26, are formed every other plurality of ridges 28 arranged in the front-rear direction, it is particularly effective for preventing the shock absorbing liner 12 from shifting in the left-right direction. is there.
In addition, the shell body 11 can be firmly fixed.
Furthermore, since the length of the fitting part 25 can be shortened, attachment to the shell body 11 (see FIG. 1) can be further simplified.

In addition, in order to fit with the front-end | tip part 24 of the wall part 23, about the magnitude | size of the fitting part 25 provided in the recessed recessed part inner surface of the shell body 11, a shape, a position, and length, the liner 12 endures predetermined force. There is no particular limitation as long as it can be fixed.
The material of the molded body is preferably a resin such as polypropylene, polyethylene, or polyamide, but may be made of rubber or metal such as aluminum, and the type thereof is not limited.

  Furthermore, by applying the helmet according to the present invention to the foamed resin liner, it is possible to improve the assemblability and greatly reduce the amount of adhesive used for assembling the shell body.

  The present invention is suitable for a helmet.

It is sectional drawing of the helmet which concerns on this invention. FIG. 2 is an enlarged view of part 2 of FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. 1 is a perspective view of an impact absorbing liner (first embodiment) according to the present invention. It is a figure explaining fitting to the shell object concerning the present invention. 1 is a perspective view of an impact absorbing liner according to the present invention. It is a figure which shows the shaping | molding process of this invention method. It is a top view of the molded object which concerns on this invention. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8. It is a one part perspective view of the molded object which concerns on this invention. It is an effect | action figure of the V-shaped notch based on this invention. It is explanatory drawing of a molded object bending process. It is explanatory drawing of a heating process. It is another Example figure of FIG. It is a perspective view of the impact-absorbing liner (2nd Example) which concerns on this invention. It is a perspective view of the impact-absorbing liner (3rd Example) which concerns on this invention. It is a perspective view of the impact-absorbing liner (4th Example) which concerns on this invention. It is a perspective view of the impact-absorbing liner (5th Example) which concerns on this invention. It is a reprint figure of patent document 1. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Helmet, 11 ... Shell body, 12 ... Shock absorption liner, 13 ... Interior pad, 21 ... Bottom part, 23 ... Wall part, 24 ... Tip part of wall part, 25 ... Fitting part (inside shell body), 26 ... mated part, 28 ... grid, 30 ... molded body, 32 ... wall welded part, 38 ... mold, 52 ... V-shaped cut, 53 ... hypotenuse of V-shaped cut.

Claims (6)

In a helmet comprising a shell body, an impact absorbing liner provided inside the shell body, and an interior pad that is provided inside the shock absorbing liner and contacts the head,
The impact-absorbing liner has a bottom portion on the surface of the interior pad side that becomes a curved convex surface, and a plurality of wall portions stand from the bottom portion toward the surface on the shell body side that becomes a curved concave surface from the bottom portion,
A helmet characterized in that a fitting portion that can be fitted to a tip portion of the wall portion is provided on an inner surface of a concave portion of the shell body that is curved.   The groove width of the fitting portion formed on the inner surface of the curved concave portion of the shell body is set to be smaller than the thickness of the front end portion of the wall portion fitted to the fitting portion. Helmet.   The plurality of wall portions are assembled in a lattice shape, and a fitted portion to be fitted to the fitting portion is provided on one wall portion of the four wall portions constituting a grid. The helmet according to claim 1.   The helmet according to claim 3, wherein one of the four wall portions is a wall portion extending in a left-right direction of the helmet.   5. The helmet according to claim 4, wherein the wall portion extending in the left-right direction of the helmet is formed every other plurality of ridges arranged in the left-right direction. Of the four wall portions, one wall portion is a wall portion provided in the front-rear direction of the helmet, and the wall portion provided in the front-rear direction of the helmet is every other plurality of tiles arranged in the front-rear direction. The helmet according to claim 3, wherein the helmet is formed.

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