JP6604680B1 - Hammock for helmet - Google Patents

Abstract

A hammock with improved human head protection performance against impact is provided. A hammock 2 that comes into contact with a human head inside a helmet body includes four or more belt-like leg portions 6a, 6b, 7a, and 7b extending downward from the top of the head with a space therebetween. Between each leg part, the girder part 10 which connects leg parts and extends in the circumferential direction is provided. In the girder part, a gap holding part 21 for holding a gap between the girder part and the cap body is provided. The space | gap holding | maintenance part 21 is comprised by the some plate-shaped part 22 arrange | positioned mutually spaced apart, and the space | interval part of each plate-shaped part 22 is made air-permeable. [Selection] Figure 4

Description

  The present invention relates to a hammock that is attached to the inside of a helmet body and attached to a human head.

  The helmet includes a hard cap body and a wearing body attached to the cap body. The wearing body is composed of a hammock, a headband, a ring string, and the like in contact with the human head. Further, in this type of helmet, an impact absorbing liner is attached to the inner surface of the cap body as a protective pad provided in addition to the wearing body in order to absorb the kinetic energy of the impact received by the cap body.

  The shock absorbing liner is generally formed of foamed polystyrene or the like and covers most of the inner surface of the cap body. As a result, even if the wearer falls or falls, the shock absorbing liner can appropriately absorb the impact force at that time to protect the human head, regardless of which side the frontal head or the back of the head receives an impact. (For example, refer patent document 1).

  However, if the shock absorbing liner is provided between the cap body and the wearing body, the air permeability inside the cap body is poor, and there is a disadvantage that the comfort during wearing is impaired due to heat accumulation and stuffiness.

  Therefore, it is conceivable to remove the shock absorbing liner from the inner surface of the cap body to ensure air permeability and heat dissipation inside the cap body.

JP-A-8-311713

  On the other hand, the hammock is also deformed by moderate flexibility and stretchability to absorb the impact from the outside of the cap body, but the cap body does not impact with the shock absorbing liner removed from the inner surface of the cap body. When subjected to force, the structure of the conventional hammock is insufficient to mitigate the impact transmitted to the human head with the hammock alone.

  An object of this invention is to provide the hammock which improved the protection performance of the human head with respect to the impact.

The present invention is a hammock that is attached to the inside of the helmet body of a helmet and has an inner surface that contacts the human head, and includes four or more belt-like legs that extend downward from the top of the head with a space between each other. A connecting part that is detachably connected to the cap body is provided at the lower end of the part, and a band-like girder part extending in the circumferential direction is provided between the leg parts by connecting adjacent leg parts to each other. The girder part is provided with a gap holding part that holds a gap between the girder part and the cap body by abutting against the inner surface of the cap body according to the bending or elongation of the leg part, and the gap holding The portion is constituted by a plurality of plate-like portions arranged at intervals along the circumferential direction of the girder portion, and in each plate-like portion, the plate surfaces are opposed to each other between the two plate surfaces. It is characterized in that the space portion can be freely ventilated .

According to the present invention , even if the cap body receives an impact, the leg portion bends inside the cap body, and even if the position of the hammock is biased and approaches the inner surface of the cap body, the gap holding portion is A gap is surely formed between the surface and the hammock to prevent the hammock from contacting the inner surface of the cap body. As a result, a situation in which the impact is directly transmitted to the human head because the hammock is in contact with the inner surface of the cap body can be prevented, and the protection performance of the human head against the impact can be improved. In addition, since excessive deformation of the legs can be suppressed, the durability of the hammock can also be improved.

  Furthermore, since the air gap holding portion is constituted by a plurality of plate-like portions and air permeability is ensured in the interval portion between the plate surfaces of each plate-like portion, it is possible to suppress hot air and stuffiness inside the cap body, High comfort when worn can be maintained.

Moreover, in this invention , it is preferable to provide the protruding item | line which protrudes along the lower edge of this girder part in the outer surface of the said girder part.

According to this, since the outer surface of the spar is provided with a ridge protruding along the lower edge of the spar, the flexible deformation on the upper edge side, which is the top side of the spar, is not hindered. The strength of the girder can be improved by the ridges.

The perspective view which shows the dressing body provided with the hammock of embodiment of this invention. The top view of the hammock of this embodiment. The rear view of the wearing body of FIG. The perspective view of the hammock of other embodiments. The top view of the hammock of FIG.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a dressing 1 that is attached to a hard cap not shown. In FIG. 1, 2 is a hammock according to an embodiment of the present invention, 3 is a headband, 4 is an ear strap, and 5 is a chin strap.

  As shown in FIGS. 1 and 2, the hammock 2 has a shape substantially corresponding to the human head shape, and includes four leg portions (a pair of front leg portions 6a and 6b and a pair of rear leg portions 7a, 7b). Each leg part 6a, 6b, 7a, 7b is formed in the strip | belt shape extended in an up-down direction, and the connection part 8 for detachably connecting with the cap body which is not shown in figure is provided in the lower end.

  Each leg 6a, 6b, 7a, 7b is formed with first ridges 9 projecting outward along both circumferential edges of the hammock 2.

The leg portions 6a, 6b, 7a, 7b are in a state in which those adjacent to each other are integrally connected by a belt-like first girder portion 10 (girder portion in the present invention) extending in the lateral direction. The first girder 10 is provided along an annular line in the circumferential direction of the hammock 2, and is apparently formed in an annular shape. By providing the first girder part 10 in an annular shape, even if an external force is applied to the first girder part 10, the external force is evenly distributed to the leg parts 6a, 6b, 7a, 7b.

  Moreover, the 2nd protruding item | line 11 (the protruding item | line in this invention) which protrudes outside along the lower edge is formed in the 1st digit part 10. As shown in FIG.

  A belt-like second girder 12 is provided between the rear legs 7a and 7b. The second girder portion 12 extends laterally at a position below the first girder portion 10, and both ends thereof are integrally connected to the rear leg portions 7a and 7b so as to connect the rear leg portions 7a and 7b. Yes.

  As shown in FIG. 2, the second girder part 12 is opposite to the first bending part 13 continuously at both ends of the first bending part 13 and the first bending part 13 which are curved in a shape substantially corresponding to the outer circumference of the human head. And a pair of second bending portions 14 that curve in the direction.

  The second girder portion 12 positions the first bending portion 13 inside the hammock 2 due to the bending of both the second bending portions 14. Thereby, a comparatively wide space | gap can be formed between the 1st curved part 13 and a cap body inner surface. Although the 1st curved part 13 is located inside the hammock 2, since it curves in the shape substantially corresponding to a human head outer periphery, when the 1st curved part 13 touches a human head, it is uncomfortable for a wearer. Less is.

  Further, as described above, the deformation of the leg portions 6 a, 6 b, 7 a, 7 b is suppressed by the first ridges 9. Accordingly, the deformation of the second girder portion 12 integrated with the rear leg portions 7a and 7b is also suppressed, and the curved shape of the second girder portion 12 by the first bending portion 13 and the second bending portion 14 is reliably maintained. The

  As shown in FIGS. 1 and 2, the hammock 2 includes a first headband locking portion 15 that locks the front end portion of the headband 3 to support the headband 3, and an upper edge of the intermediate portion of the headband 3. A second headband locking portion 17 that supports the headband 3 by locking the extending extension piece 16 is provided.

  As shown in FIG. 1, the first headband locking portion 15 is formed in a horizontally long plate shape, and extends downward from the first girder portion 10 that connects the front legs 6 a and 6 b. 18 is supported.

  The 2nd headband latching | locking part 17 is provided in the 1st girder part 10 which connects between the front leg parts 6a and 6b and the rear leg parts 7a and 7b of the side adjacent to each. The second headband locking portion 17 supports the extended piece 16 so as to be movable in a stepwise manner in the vertical direction, and thereby the height position of the headband 3 can be adjusted according to the wearer. ing.

  The headband 3 is composed of a pair of band-like members 3 a and 3 b whose front end portions are locked to the first headband locking portion 15. As shown in FIG. 1, circumferential length adjusting means 19 that adjusts the circumferential length of the headband 3 in accordance with the wearer is provided at the rear end portions of both belt-like members 3 a and 3 b.

  The circumferential length adjusting means 19 shortens the circumferential length of the headband 3 by pulling downward the pair of pulling pieces 19a extending downward. Both the pulling pieces 19a are slidably connected to the ear strap 4 through the sliding portions 19b. When the both pulling pieces 19a are pulled downward, the two pulling pieces 19a are moved by the sliding of the sliding portions 19b. Guided along the ear strap 4.

As shown in FIG. 1, a pair of ear straps 4 are provided on the left and right sides, the front ends are connected to the lower ends of the front legs 6 a and 6 b, and the rear ends are on the back head side of the hammock 2 as shown in FIG. 3. It is connected to the connecting ring 20 provided.

  Further, as shown in FIG. 1, a chin strap 5 is connected to the left and right ear straps 4. The lengths of the ear strap 4 and the chin strap 5 can be adjusted by a buckle or the like (not shown).

  As shown in FIG. 3, the connecting ring 20 to which the rear end of the ear strap 4 is connected is provided on the outer surface of the first bending portion 13 of the second girder portion 12. As described above, the second girder portion 12 forms a relatively wide gap between the first bending portion 13 and the cap body inner surface by the pair of second bending portions 14. By providing the connecting ring 20 on the outer surface of the first bending portion 13, the connecting ring 20 is accommodated in the relatively wide gap.

  The hammock 2 of the present embodiment having the above configuration has the following effects. That is, inadvertent twisting deformation of each leg 6a, 6b, 7a, 7b can be prevented by the 1st protruding item | line 9 formed in each leg 6a, 6b, 7a, 7b. Therefore, the impact transmitted to the human head can be reliably mitigated by the legs 6a, 6b, 7a, 7b, and the human head protection performance can be improved.

  Further, since the connecting portion 8 is provided at the lower end of each leg portion 6a, 6b, 7a, 7b, when the leg portions 6a, 6b, 7a, 7b are deformed, the influence of the connecting portion 8 on the cap body is caused by the influence thereof. There is a risk that the coupling force is weakened. However, in this embodiment, since the 1st protruding item | line 9 is extended to the lower end of each leg part 6a, 6b, 7a, 7b, a deformation | transformation of the lower end part of each leg part 6a, 6b, 7a, 7b is suppressed. Thus, it is possible to maintain a strong connection state to the cap body by the connecting portion 8.

  Moreover, since each leg part 6a, 6b, 7a, 7b is the state connected integrally by the 1st digit part 10, the excessive expansion of the space | interval between each leg part 6a, 6b, 7a, 7b is carried out. It is suppressed and the wearing state of the hammock 2 on the human head can be stabilized. Further, since the second ridge 11 is formed on the lower edge of the first spar 10, the strength of the first spar 10 is improved without hindering flexible deformation on the upper edge side of the first spar 10. Thus, it is possible to reliably prevent the distortion of the first digit portion 10 from spreading to the leg portions 6a, 6b, 7a, 7b.

  In addition to the above configuration, as shown in FIG. 4 and FIG. 5 as another embodiment, gap holding portions 21 may be provided on the frontal side, the occipital side, and the left and right temporal sides. Each space | gap holding | maintenance part 21 is provided in the 1st digit part 10 located between each leg part 6a, 6b, 7a, 7b. Since the configuration other than the gap holding unit 21 is the same as that of the above-described embodiment, the same reference numerals are given and the description thereof is omitted.

  Each gap holding part 21 is constituted by a plurality of plate-like parts 22. Each plate-like portion 22 is provided in such a posture that the plate surfaces 23 face sideways and the plate surfaces of adjacent plate-like portions 22 face each other, and a space portion 24 between the two plate surfaces 23 can be vented in the vertical direction. It has become. As a result, the airflow passing through the gap 24 between the two plate surfaces 23 can smoothly flow between the hammock 2 and the cap body, and even if each gap holding portion 21 is provided, the heat accumulation inside the cap body can be reduced. It is possible to prevent and obtain comfort when worn.

Although not shown, the outer edge of the plate-like portion 22 constituting each gap holding portion 21 is in contact with the inner surface of the cap body, or the legs 6a, 6b, 7a of the hammock 2 inside the cap body. , 7b is brought into contact with the inner surface of the cap body in accordance with the bending or elongation deformation of the cap body, thereby preventing contact between the first girder portion 10 and the cap body, and the first girder portion 10 and the cap body. The gap between is held. By ensuring the space at this time, the hammock 2 does not come into contact with the inner surface of the cap body, and the situation where the impact received by the cap body is directly transmitted to the human head can be prevented. In addition, since the movement region of the hammock 2 within the cap body is restricted by a small region by the plate-like portion 22 of each gap holding portion 21, excessive distortion such as twisting or distortion of the leg portions 6a, 6b, 7a, 7b is caused. Deformation is suppressed, and the durability of the hammock 2 is improved.

  As described above, according to the hammock 2 having the configuration shown in FIGS. 4 and 5 cited as the other embodiment, by providing each gap holding portion 21, the person against the impact without impairing the comfort at the time of wearing. The protection performance of the head can be improved more reliably, and the excessive deformation of the legs 6a, 6b, 7a, 7b can be more reliably prevented.

  In addition, in the hammock 2 of each of the above embodiments, the one having four legs 6a, 6b, 7a, 7b is shown, but the present invention is not limited to this, and the number of legs may be four or more. The invention can be applied.

2 ... Hammock, 6a, 6b, 7a, 7b ... Leg part, 8 ... Connection part, 10 ... First girder part (girder part), 11 ... Second ridge (projection), 21 ... Gap holding part, 22 ... Plate-like portion, 23... Plate surface, 24.

Claims (2)

A hammock that is attached to the inside of the helmet body of the helmet and has an inner surface in contact with the human head, and includes four or more belt-like legs extending downward from the top of the head with a space between each other, at the lower end of the legs In addition, in what is provided with a connecting portion detachably connected to the cap body,
Between each of the legs, a band-like girder extending in the circumferential direction by connecting adjacent legs is provided,
In the girder part, a gap holding part that holds a gap between the girder part and the cap body by contacting the inner surface of the cap body according to the bending or elongation of the leg part is provided,
The gap holding part is constituted by a plurality of plate-like parts arranged at intervals from each other along the circumferential direction of the girder part,
A helmet hammock characterized in that in each plate-like portion, the plate surfaces are opposed to each other so that a space between the two plate surfaces can be vented.   2. The helmet hammock according to claim 1, wherein a protrusion protruding along a lower edge of the girder is provided on an outer surface of the girder.

Images