JP2009114575A - Helmet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a helmet which is simply constituted and can easily be produced. <P>SOLUTION: In this helmet 1, an impact-absorbing liner 3 is mounted on the inside of an upper shell 2, and an under shell 4 is disposed on the lower portion. A rivet 19 for passing through penetrated holes 16, 17 formed in a chin strap 5 is separately disposed. Groove portions 11, 12 for receiving the chin strap 5 are formed on the upper shell 2 side of the impact-absorbing liner 3, and dents 13, 14 are formed in the groove portions. The chin strap 5 is passed through a hole disposed at the lower end of the frame portion 23 of the under shell 4, and engaged with the dents 13, 14 of the impact-absorbing liner 3 with the rivet 19 passed through the penetrated holes 16, 17 of the chin strap 5. The chin strap 5 is nipped between the impact-absorbing liner 3 and the upper shell 2, and extended outside. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a relatively lightweight helmet that is used by school children, cyclists, and the like to protect their heads.

Conventionally, as this type of helmet, there are those described in Patent Documents 1 to 3, for example.
In the helmet described in Patent Document 1, a chin belt for fixing the helmet to the user's chin is attached to a cap body formed of a synthetic resin shell and a shock absorbing liner fitted in the shell. ing. The chin belt is composed of a pair of left and right front belts and a single rear belt that is provided on the rear head side of the helmet and folded at the center.
The front belt and the rear belt of the chin belt are respectively supported by support portions formed on the inner surface of the shell through the belt holes from the inside to the outside of the shock absorbing liner. And the buckle is provided in one lower end part of a pair of front belt which protrudes below a helmet, and the tongue is provided in the other lower end part. Further, an adjustment plate for adjusting the length in the vertical direction is provided at the middle portion of each front belt, and the rear belt on the same side is connected to the adjustment plate so that the length can be adjusted. Then, in a state where the user is wearing a helmet, the buckle and tongue of the pair of front belts are engaged with each other to be fixed to the chin.

Further, the helmet described in Patent Document 2 is a cap body in which a shock absorbing liner is fitted to the inner surface of the shell, and the chin strap attached to the front side is a shock absorbing liner through left and right insertion holes formed in the shock absorbing liner. The both ends are connected to two members constituting the fastener. The chin strap attached to the rear side extends from the inside to the outside through the insertion groove of the shock absorbing liner and is folded back, and both ends thereof are connected to the middle portion of the front chin strap.
Further, the helmet described in Patent Document 3 is a helmet in which an impact absorbing liner is fitted inside the shell, and the chin strap is extended from the inside to the outside through the through hole of the impact absorbing liner. The folded portion of the chin strap is locked to the strap holder, and the strap holder is sandwiched between the shock absorbing liner and the shell and fixedly held.
Japanese Utility Model Publication No. 6-13216 Japanese Utility Model Publication No. 3-70224 JP-A-2-264008

  However, in the conventional helmets described above, the chin straps penetrate from the inside to the outside of the shock absorbing liner, and the left and right chin straps are connected to the outer surface of the shock absorbing liner, or are locked to the shell. Since the chin strap is configured to be locked and held by a holder or the like, it is necessary to form a through hole for inserting the chin strap into the shock absorbing liner. There is a drawback that the structure becomes complicated and the manufacturing process becomes complicated, such as requiring a holder for stopping. Moreover, when the chin strap is passed through the through hole in the manufacturing process of the helmet, the chin strap is twisted and is difficult to pass through the through hole.

  In view of such circumstances, the present invention has an object to provide a helmet that is simple in configuration and easy to manufacture.

A helmet according to the present invention is a helmet in which a shock absorbing liner is attached to the inner side of the upper shell, and a chin strap is attached, and a through hole is formed in the chin strap by forming a recess on the upper shell side surface of the shock absorbing liner. In addition, a convex portion for engaging the chin strap is provided in the concave portion of the shock absorbing liner, and the chin strap extends outwardly between the shock absorbing liner and the upper shell.
According to the helmet of the present invention, the chin strap is locked to the concave portion on the outer surface of the shock absorbing liner by the convex portion, and the chin strap is sandwiched between the outer surface of the shock absorbing liner and the upper shell that are fitted to each other. Therefore, it is not necessary to pass the chin strap between the inside and outside of the shock absorbing liner, and the chin strap is not twisted when passing through a thick through-hole, and the structure is simple and manufacture is easy. Become.

  According to the helmet of the present invention, it is not necessary to pass the chin strap from the inside to the outside of the shock absorbing liner, and the chin strap is locked to the concave portion of the shock absorbing liner with the convex portion through the through hole of the chin strap and the chin strap is connected to the shock absorbing liner. Since it extends to the outside through the upper shell, there is no need for a locking member such as a holder for passing the chin strap through the shock absorbing liner from the inside to the outside, and a chin strap. Is simple. In addition, when assembling the helmet, the chin strap is fixed only by the outer surface of the shock absorbing liner and the chin strap is sandwiched between the shock absorbing liner and the upper shell, so that the chin strap can be attached and the helmet can be assembled easily. Play.

In the helmet according to the present invention, the convex portion for locking the chin strap may be formed of a member separate from the upper shell and the impact absorbing liner.
Since the convex portion is a separate member, the upper shell can be fitted after the jaw strap is locked to the shock absorbing liner, and assembly is easy.
Further, the convex portion may be formed on the inner surface of the upper shell.
As a result, the number of parts is further reduced, with the chin strap positioned on the outer surface of the shock absorbing liner or with the chin strap inserted through the convex portion and the convex portion inserted into the concave portion of the shock absorbing liner. The helmet assembly including the chin strap attachment can be completed by fitting the upper shell to the shock absorbing liner.

Further, it is preferable that a groove portion for accommodating the chin strap is provided on the surface of the shock absorbing liner on the upper shell side, and a concave portion is formed in the groove portion.
Since the chin strap is accommodated in the groove portion of the shock absorbing liner, when the upper shell is fitted, there is no useless gap between the shock absorbing liner and the upper shell, and it is possible to fit them in a close contact state.
Further, the convex portion may be formed so that the distal end portion is wider than the base portion, and the through hole of the chin strap may have a shape that is narrower than the distal end portion of the convex portion and is equal to or wider than the base portion.
As a result, the convex portion inserted into the through hole of the chin strap does not easily come off from the chin strap, and by inserting the convex portion into the concave portion, it can be securely sandwiched between the shock absorbing liner and the upper shell, so that the assembly can be performed. Easy.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 is an exploded perspective view of a helmet according to an embodiment, FIG. 2 is a side view of an impact absorbing liner, FIG. 3 is a plan view showing only half of the impact absorbing liner, and FIG. 4 is a front view, a side view, and a plan view of a locking portion. Fig. 5 is a bottom view, Fig. 5 is a cross-sectional view of an essential part showing a locking structure of a chin strap to a helmet, and Fig. 6 is an exploded cross-sectional view of Fig. 5.
The helmet 1 according to the present embodiment is used by school children, cyclists, and the like, for example. The helmet 1 includes a substantially hemispherical or concave curved upper shell 2, an impact absorbing liner 3 attached to the inner surface of the upper shell 2, and an undershell 4 attached to the lower surfaces of the upper shell 2 and the impact absorbing liner 3. It is roughly composed. Furthermore, the helmet 1 is attached to the chin and the like in a state where the helmet 1 is worn by the user, and attached to the rear side from both sides of the undershell 4 according to the user's head dimensions. And a pair of headbands 6 with adjusters for adjusting the distance.
Note that the headband 6 with adjuster may not be provided.

The upper shell 2 shown in FIG. 1 is made of, for example, ABS resin, and the upper shell 2 is manufactured by integral molding by injection molding. Alternatively, the upper shell 2 may be manufactured as a thin layer sheet by vacuum molding or sheet molding. A plurality of ventilation holes 8 are formed in the upper shell 2 at appropriate intervals.
The shock absorbing liner 3 shown in FIG. 1 to FIG. 3 is made of foamed polystyrene or the like so that the outer surface 3a and the inner surface 3b have a predetermined thickness, and has the same shape as the upper shell 2. The shock absorbing liner 3 has a vent hole 9 formed at the same position as the vent hole 8 of the upper shell 2. The upper shell 2 and the shock absorbing liner 3 do not necessarily need to be provided with the vent holes 8 and 9.

  On the outer surface 3a of the shock absorbing liner 3, a pair of grooves 11 and 12 for mounting the chin strap 5 on both the left and right sides are formed at intervals. Each of the grooves 11 and 12 extends upward from the lower end of the shock absorbing liner 3 toward the top, and is formed, for example, up to a midway position that does not reach the top. In the vicinity of the upper ends of the grooves 11 and 12, recesses 13 and 14 having small widths that are deeper than the grooves 11 and 12 are formed. The recesses 13 and 14 do not penetrate through the inner surface of the shock absorbing liner 3 but may penetrate therethrough. In the vicinity of the lower ends of the groove portions 11 and 12, step portions 11a and 12a that are further lowered from the upper portion thereof are formed, so that the chin strap 5 accommodated in the groove portions 11 and 12 can be easily bent inward. .

The chin strap 5 attached to each of the grooves 11 and 12 includes a front chin strap 5a and a rear chin strap 5b. A through hole 16 is perforated at one end of the front jaw string 5a on the side where the groove 11 is mounted, and the other end protrudes outward (downward in FIG. 1) from the lower end of the groove 11. An engaging portion such as a buckle or tongue that is not attached is attached, and a pair of left and right front jaw strings 5a, 5a can engage a buckle and a tongue provided at the other end.
Further, a through hole 17 is perforated at an end portion of the rear jaw string 5b on the side where the groove portion 12 is mounted, and the other end side protrudes from the lower end of the groove portion 11 to the outside (downward in FIG. 1). An adjustment plate (not shown) for adjusting the length in the vertical direction is provided in the middle part of each front jaw string 5a, 5a, and the rear jaw string 5b on the same side is connected to the adjustment plate so that the length can be adjusted. ing.

Further, for example, a rivet is used as a convex portion for engaging the through holes 16 and 17 with the concave portions 13 and 14 of the groove portions 11 and 12 in a state where the chin strap 5 is attached to the groove portions 11 and 12 of the shock absorbing liner 3. 19 is provided. As shown in FIGS. 1 and 4, the rivet 19 is composed of a flat substrate 19a and a substantially trapezoidal projection 19b in side view, and the tip 19bb is set wider than the base 19ba of the projection 19b. Yes.
In addition, the base portion 19ba of the protrusion 19b is formed to have the same size or narrower than the through holes 16 and 17 of the jaw string 5, and the tip end portion 19bb is formed to be wider than the through holes 16 and 17. Therefore, when inserting the rivet 19 into the through-holes 16 and 17 of the jaw string 5, while pushing the through-holes 16 and 17 apart or tilting the projection 19 b with respect to the through-holes 16 and 17, Need to be inserted from.
Further, as shown in FIGS. 5 and 6, the recesses 13 and 14 provided in the groove portions 11 and 12 of the shock absorbing liner 3 are set so that the bottom portion 20 has substantially the same width as the tip end portion 19bb of the protruding portion 19b. The side wall 21a is formed so as to be gradually inclined upward from the bottom 20 toward the opening, and the upper side wall 21b facing the side wall 21a is gradually more upward from the bottom 20 toward the opening than the side wall 21a. Inclined. Therefore, when the rivet 19 is fitted into the recesses 13 and 14 through the through-holes 16 and 17 of the chin strap 5, it is guided by the upper side wall 21b and guided to the bottom portion 20, and the lower side with respect to the pulling load. It will be locked by the side wall 21a.

The undershell 4 shown in FIGS. 1 and 5 is made of, for example, a thin sheet formed by cloth or sheet molding, and is formed in, for example, a substantially U-shaped cross section so as to cover the lower end of the shock absorbing liner 3. Further, substantially box-shaped frame portions 23 and 23 are formed on the outer inner surface of the undershell 4 at the portions where the chin straps 5a and 5b are inserted, and the chin straps 5a and 5b are inserted into the bottom portions of the respective frame portions 23. The hole 24 is perforated. The frame portion 23 of the undershell 4 is fitted into the step portions 11 a and 12 a of the groove portions 11 and 12 when the lower end of the shock absorbing liner 3 is inserted into the undershell 4.
Further, the outer upper end 4a of the undershell 4 is formed in a tapered shape so as to be fitted with the lower end 2a of the upper shell 2 (see FIGS. 5 and 6).

The helmet 1 according to the present embodiment has the above-described configuration. Next, a method for assembling the helmet 1 will be described.
First, the chin straps 5a and 5b are inserted into the pair of left and right frame portions 23 and 23 of the undershell 4 from the holes 24 and 24, respectively, and in this state, the protrusions 19b of the rivet 19 are inserted into the chin straps 5a and 5b. The through holes 16 and 17 are inserted from one corner. Thereafter, the rivets 19 are inserted into the recesses 13 and 14 provided in the grooves 11 and 12 of the shock absorbing liner 3. Then, the jaw strings 5 a and 5 b are attached to the grooves 11 and 12 of the shock absorbing liner 3, and the other end is hung on the lower side of the helmet 1. As a result, the chin straps 5a and 5b are respectively engaged with the shock absorbing liner 3 via the rivets 19.
In this state, the lower end portion of the shock absorbing liner 3 is fitted or attached to the undershell 4 having a substantially U-shaped cross section. At this time, the frame portions 23 and 23 through which the jaw strings 5 a and 5 b of the undershell 4 are inserted are attached so as to contact the step portions 11 a and 12 a of the grooves 11 and 12 of the shock absorbing liner 3.
Next, the upper shell 2 is fitted on the shock absorbing liner 3 via a double-sided tape or an adhesive, and the shock absorbing liner 3 and the upper shell 2 are joined to each other with a double-sided tape or an adhesive. At the same time, the tapered lower end 2a of the upper shell 2 and the tapered outer upper end 4a of the undershell 4 are alternately fitted. Since each chin strap 5 is accommodated in each of the grooves 11 and 12 of the shock absorbing liner 3, no gap or the like is generated between the upper shell 2 and the shock absorbing liner 3 so that they are in close contact with each other. it can.
In this way, the assembly of the helmet 1 is completed.

When the helmet 1 according to the present embodiment is used, for example, when a schoolchild wears the helmet 1 and fastens the chin belt 5, the chin strap 5 is attached to the recesses 13 and 14 of the shock absorbing liner 3 by the rivets 19. The impact absorbing liner 3 and the upper shell 2 joined in the fitted state are sandwiched and firmly held.
Moreover, the adjuster 6 can adjust the size of the headband in accordance with the head size of a schoolchild or the like.

  As described above, according to the helmet 1 according to the present embodiment, the chin strap 5 does not need to penetrate the shock absorbing liner 3 having a predetermined thickness as in the conventional helmet, and the holder for locking the chin strap 5 is not necessary. Since the upper shell 2 can be fitted into the recesses 13 and 14 of the shock absorbing liner 3 by the rivet 19 through the hole 24 of the undershell 4 before the attachment, the chin strap 5 can be easily attached and configured. The helmet 1 is easy to assemble and manufacture. Moreover, since the chin strap 5 placed on the outer surface 3a of the shock absorbing liner 3 is mounted in the grooves 11 and 12, the chin strap 5 can be securely fixed, and even if the upper shell 2 is fitted, the chin strap 5 is closely contacted. it can.

In addition, the helmet 1 by this invention is not limited to the above-mentioned Example, It can change suitably in the range which does not deviate from the meaning.
Next, a second embodiment of the present invention will be described with reference to FIG.
In the helmet 1A according to the second embodiment, the protrusion 19b of the rivet 19 is formed on the inner surface of the upper shell 2 as a convex portion. Therefore, it is preferable that the upper shell 2 is integrally formed by injection molding, or the protrusion 19b of the rivet 19 is fixed to the inner surface of the upper shell 2 by welding or an adhesive after the upper shell 2 is manufactured. In this embodiment, as shown in FIG. 7, the protrusions 19 b are integrally formed on the inner surface of the upper shell 2.
The rest of the configuration is the same as that of the helmet 1 according to the first embodiment described above.
In addition, what is necessary is just to shape | mold using the slide mechanism, when integrally molding the upper shell 2 and the projection part 19b.

Therefore, when assembling the helmet 1A, the chin straps 5a and 5b are inserted into the holes 24 and 24 of the frame portions 23 and 23 of the undershell 4, respectively, and the through holes 16 and 17 are formed into the recesses 13 and 14 of the shock absorbing liner 3, respectively. To align. In this state, the undershell 4 is mounted on the shock absorbing liner 3 and the frame portions 23 and 23 are fitted into the step portions 11 a and 12 a of the groove portions 11 and 12 of the shock absorbing liner 3.
Then, while the upper shell 2 is fitted to the impact absorbing liner 3 via a double-sided tape or an adhesive, the projections 19b provided on the inner surface of the upper shell 2 are passed through the through holes 16 and 17 of the jaw string 5 and the impact absorbing liner 3 Are inserted into the recesses 13 and 14. In this way, the helmet 1A can be manufactured.
In addition, regarding the manufacturing method of the helmet 1A, instead of the above-described method, the through holes 16 and 17 of the chin straps 5a and 5b are inserted in advance into the protruding portions 19b and 19b of the upper shell 2 so that the upper shell 2 is shock-absorbing liner. 3, the protrusion 19 b may be inserted and locked into the recesses 16 and 17. Thereafter, the chin strap 5 may be pulled downward to be mounted in the groove portions 11 and 12 so as to be loosened.

  As described above, the helmet 1A according to the second embodiment has the same operational effects as the helmet 1 according to the first embodiment, and also has a configuration in which the protruding portion 19b is attached to the inner surface of the upper shell 2. Compared with the form, the number of parts is reduced, and the assembly becomes easier.

In each of the above-described embodiments, the chin strap 5 is attached to the recesses 13 and 14 of the shock absorbing liner 2 with the projections 19b and the chin strap 5 is attached to the groove portions 11 and 12, but the groove portions 11 and 12 are The chin strap 5 may not be necessarily provided, but may be simply sandwiched between the shock absorbing liner 3 and the inner surface of the upper shell 2.
Further, the convex portion is not limited to the rivet 19 and the protruding portion 19b described above, and may be a pin or the like. In short, the jaw string 5 is locked to the outer surface 3a of the shock absorbing liner 3 in cooperation with the concave portion of the shock absorbing liner 3. Anything that can be held is acceptable.

In each of the above-described embodiments, the undershell 4 that fits the shock absorbing liner 3 and the upper shell 2 is provided. However, the undershell 4 is not necessarily provided. In this case, the upper shell 2 is mounted while the chin strap 5 is placed in the grooves 11 and 12 of the outer surface 3a of the shock absorbing liner 3, or the shock absorbing liner 3 and the upper shell not having the grooves 11 and 12 are mounted. 2 between the shock absorbing liner 3 and the upper shell 2 and extending outwardly downward.
If the undershell 4 is not provided, it is not necessary to pass the hole 24 of the undershell 4 when the jaw string 5 is attached, so that the structure is simpler and the assembly is easier.

1 is an exploded perspective view of a helmet according to a first embodiment of the present invention. It is a side view of an impact absorption liner. It is a figure which shows only the half of the top view of an impact absorption liner. It is a figure which shows a rivet, (a) is a front view, (b) is a plane, (c) is a side view, (d) is a bottom view. It is principal part sectional drawing which shows the latching structure of the chin strap to a helmet. 6 is an exploded cross-sectional view of FIG. It is sectional drawing similar to FIG. 5 of the helmet by the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A Helmet 2 Upper shell 3 Shock absorption liner 4 Under shell 5 Jaw string 5a Front jaw string 5b Rear jaw string 11, 12 Groove parts 13, 14 Recess 19 Rivet 19b Protrusion part

Claims (5)

In a helmet with a shock absorbing liner attached to the inside of the upper shell and a chin strap attached,
A concave portion is formed on the upper shell side surface of the shock absorbing liner, and a convex portion is provided for locking the chin strap to the concave portion of the shock absorbing liner through a through hole formed in the chin strap, A helmet characterized in that it extends outwardly between the shock absorbing liner and the upper shell.   The helmet according to claim 1, wherein the convex portion is formed of a member separate from the upper shell and the shock absorbing liner.   The helmet according to claim 1, wherein the convex portion is formed on an inner surface of the upper shell.   The helmet according to any one of claims 1 to 3, wherein a groove portion for receiving a chin strap is provided on a surface of the shock absorbing liner on the upper shell side, and the concave portion is formed in the groove portion.   5. The convex portion is formed to have a tip portion wider than a base portion, and the through hole of the chin strap is narrower than the tip portion of the convex portion and has a shape equal to or wider than the base portion. A helmet according to any one.

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