JP3154753U - Helmet with soft visor - Google Patents

Abstract

[PROBLEMS] To prevent a helmet from being damaged even if the buttocks collides with other workers, products, parts, or materials during work, and even if an object falls and hits the buttocks, the work space is further narrowed. Providing a helmet with a soft visor so that the buttocks do not get in the way when entering. In a resin helmet in which a collar part 2 is projected and integrated with a part or all of a peripheral part including at least a front side edge part of a cap body 1 at 0 ° C. to 50 ° C. by dynamic viscoelasticity measurement of the collar part. The value of the elastic modulus at ° C. is in the range of 1 to 10 6 to 4 to 10 8 Pa. [Selection] Figure 1

Description

  The present invention relates to a helmet with a soft visor, and more particularly to a helmet with a soft visor provided with a flexible collar on the front side of a cap body.

  Conventionally, helmets for industrial use have been provided with an interior device comprising a combination of a hammock and a headband, or an impact-absorbing liner and a headband on the inside of the cap body which is an outer shell, and the wearer's head is the cap body. Even if an external force is applied to the cap body, the impact is mitigated and the wearer's head is protected. In addition, the front portion of the helmet body is provided with a collar projecting in an arc shape to protect eyes from direct sunlight or to protect the face from raindrops and falling objects.

  In Patent Document 1, in a helmet in which a transparent collar is integrally joined to widen the field of view at the front end edge portion of the cap body, the helmet is joined to the joint of the collar for the purpose of increasing the attachment strength of the collar. A piece is formed, and the joining piece is joined from both side surfaces by the front edge portion of the cap body, or joined with one side surface of the joining piece overlapped with the front edge portion of the cap body. In addition, projecting portions are extended forward from both side portions of the cap body to form concave portions between both side portions of the front edge portion, and both end portions of the flange portion are joined to the concave portions in a fitted state. A structure is disclosed. Here, in order to join the collar part to the cap body, so-called insert molding is used in which the collar part previously molded in a molding die of the cap body is set and injection molded.

  Further, in Patent Document 2, the attachment strength of the buttocks to the cap body is further increased than that of Patent Document 1, and the substantially hemispherical cap is used for the purpose of preventing damage and damage to the buttocks and maintaining transparency. A helmet provided with a substantially transparent heel part protruding forward on the front side of the body, wherein the heel part has a substantially transparent heel body by an outer peripheral frame part extending from both sides of the cap body. A structure in which the entire periphery is enclosed and joined is disclosed. Further, a bent portion bent in a substantially L-shaped cross section is formed on the outer peripheral side of the bag main body, and the bent portion is joined while being embedded in the outer peripheral frame portion and the front portion.

  Patent Document 3 discloses a thin-walled shape provided with a front heel portion that forms a hem that spreads on the front side of the cap body, and a rear heel portion that forms a skirt that spreads on the skirt on the rear side of the cap body. There is disclosed a helmet in which an auxiliary hook made of a flexible plate-like member is detachably attached to the outer periphery of the cap body.

Japanese Patent No. 2984699 JP 2007-303023 A Utility Model Registration No. 3002469

  The conventional buttocks provided on the front side of the cap body, including the transparent or substantially transparent buttocks described in Patent Documents 1 and 2, are recognized as a part of the helmet, and are the same material or different from the cap body. Even if it was a material, it was produced using a resin material that is hard and resistant to impact. However, a helmet with a hard buttocks may hurt the opponent by colliding with other workers, products, parts, or materials during work, or the helmet may come off if something falls and hits the buttocks, In addition, there is a problem that when entering a narrow work space, the buttocks cannot be held.

  In view of the above situation, the present invention intends to solve the problem by softening the buttock so that the buttock may hurt the opponent even if it hits other workers, products, parts, or materials during the work. Therefore, there is no fear that the helmet will be removed even if an object falls and hits the buttocks, and a helmet with a soft visor that prevents the buttocks from getting in the way when entering a narrow work space is provided.

In order to solve the above-mentioned problems, the present invention is a resin helmet in which a collar is projected in an arc shape on the front side edge of the cap body, and is 0 ° C. to 50 ° C. by dynamic viscoelasticity measurement of the collar. A helmet with a soft visor characterized in that the value of the elastic modulus at ° C. is in the range of 1 × 10 ⁶ to 4 × 10 ⁸ Pa (Claim 1).

  Further, a short auxiliary hook part made of the same material as that of the cap body is integrally formed at a part or all of the position where the hook part is provided at the peripheral part of the cap body, and the base part overlaps the auxiliary hook part. It is also preferable to be provided in (Claim 2).

  Here, it is preferable that the previously formed opaque or transparent collar part is held in a molding die of the cap body, and the cap body is injection molded to integrate the cap body and the collar part.

  In addition, it is also preferable that the cap body and the opaque or transparent collar portion are separately formed, and the cap body and the collar portion are integrated by unevenly fitting the joint portion (claim 4).

The helmet with a soft visor of the invention according to claim 1 as described above is a resin helmet in which a collar is protruded and integrated with a part or all of a peripheral part including at least a front side edge of the cap body. Since the value of the elastic modulus at 0 ° C. to 50 ° C. by dynamic viscoelasticity measurement of the part is in the range of 1 × 10 ⁶ to 4 × 10 ⁸ Pa, the heel part has sufficient flexibility and appropriate shape retention. Even if the buttocks collide with other workers, products, parts, or materials during work, the shock is absorbed, so there is no damage to the other party, and even if the object falls and hits the buttocks, the buttocks deform Since the rotational moment with respect to the cap body is small, there is no fear of the helmet being removed, and when entering a narrow work space, the buttock is deformed to avoid an obstacle, so that it does not get in the way.

  According to claim 2, a short auxiliary hook part made of the same material as that of the cap body is integrally formed in a part or all of the position where the hook part is provided at the peripheral part of the cap body, and the hook part is formed into the auxiliary hook part. Since the base is overlapped with the base, the attachment strength of the heel to the cap increases, and even if the heel has flexibility, the base is molded with the same material as the cap, and the short auxiliary heel Since the shape is retained by, the shape is not lost.

  According to the third aspect of the present invention, the previously formed opaque or transparent collar part is held in the molding die of the cap body, and the cap body is injection molded to integrate the cap body and the collar part. The joint strength of the buttock is high, and it is relatively easy to manufacture. When the buttock is opaque, it has the original function of blocking direct sunlight and lighting to suppress glare, and the buttock is transparent. In such a case, there is an effect that the field of view can be widened.

  According to claim 4, since the cap body and the opaque or transparent collar part are separately molded, and the joint part is unevenly fitted to integrate the cap body and the collar part. Is easy to form, can be joined and integrated only by fitting work, and can be easily replaced even if the collar portion is damaged. Similarly to the above, when the buttock is opaque, it has an original function of blocking direct sunlight and illumination to suppress glare, and when the buttock is transparent, the effect of widening the field of view. Play.

It is a perspective view of the helmet with a soft visor of this invention. It is a reference perspective view of the state which separated the cap body and the buttocks. It is reference sectional drawing of the state which isolate | separated the cap body and the buttocks. It is a top view of a helmet with a soft visor. It is a front view of a helmet with a soft visor.

  Next, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. FIG. 1 shows a helmet with a soft visor according to the present invention, FIGS. 2 and 3 show a state in which a cap body and a buttock are separated, reference numeral 1 in the figure is a cap body, 2 is a heel part, 3 is a holding edge, Reference numeral 4 denotes a reinforcing piece, and 5 denotes a reinforcing edge.

The helmet with a soft visor of the present invention is a resin helmet in which a collar portion 2 is projected and integrated on a part or all of a peripheral edge portion including at least a front side edge portion of the cap body 1, The value of the elastic modulus at 0 ° C. to 50 ° C. by the elasticity measurement is in the range of 1 × 10 ⁶ to 4 × 10 ⁸ Pa, and the heel part 2 is provided with sufficient flexibility and appropriate shape retention. is there. Here, it is possible to make the collar part 2 opaque and shield the eyes by blocking direct sunlight and illumination, or to make the collar part 2 transparent to widen the field of view, and it can be selected according to the purpose.

  Although not shown, a short auxiliary hook part made of the same material as that of the cap body 1 is integrally formed in a part or all of the position where the hook part 2 is provided at the peripheral part of the cap body 1, and the hook part 2 is By providing the base so as to overlap the auxiliary hook, it is possible to increase the mounting strength of the hook 2 and maintain the shape of the hook 2 with high flexibility.

  In order to manufacture a helmet, first, the heel part 2 is molded with a highly flexible thermoplastic elastomer, the heel part 2 is held in a molding die of the cap body 1, and the cap body 1 is hard and strong as usual. The cap body 1 and the heel part 2 are integrated by injection molding with a high thermoplastic resin, so-called insert molding, and molding. Alternatively, the cap body 1 and the heel part 2 can be formed separately, and the joint part can be integrated by uneven fitting. When the cap body 1 and the collar part 2 are integrated by uneven fitting, an adhesive means for applying an adhesive to the joint part may be used in combination.

Here, the material of the cap body 1 is PC (polycarbonate), ABS resin (acrylonitrile butadiene styrene copolymer, PE (polyethylene), PP (polypropylene), etc.), and an inorganic filler is added to increase the strength. Moreover, the material of the said collar part 2 is soft, such as a thermoplastic elastomer whose value of the elasticity modulus in 0 to 50 degreeC by the dynamic viscoelasticity measurement is the range of 1 * 10 < ⁶ > -4 * 10 < ⁸ > Pa. Resin is used.

  In this embodiment, the case where the said cap body 1 and the collar part 2 are integrated by insert molding is demonstrated in more detail based on FIGS. The flange portion 2 has a substantially crescent shape in plan view, and has an outer shape in which a front side is curved in an arc shape and a rear side is formed with a recess 6 in accordance with the shape of the front edge portion of the cap body 1. The holding edges 3 and 3 having a gradually increased thickness are formed from the front part to the rear part. In the present invention, the collar part 2 is very flexible, and when it is made thin, it is bent and deformed by its own weight. Therefore, the holding edges 3 and 3 are formed on both side edge parts in order to improve shape retention. Further, step portions 7 and 7 are formed forward from the concave portion 6 in the central portion of the flange portion 2 to increase the bending strength of the base portion of the flange portion 2. The step 7 may be a rib.

  On the other hand, the cap body 1 is a hemispherical shell body, and the reinforcing pieces 4 and 4 protrude forward from both side portions of the front side edge portion. And the reinforcement pieces 4 and 4 of the said cap body 1 are continuously integrated with the holding edges 3 and 3 of the said collar part 2 by insert molding. Further, the cap body 1 forms a reinforcing edge 5 having a substantially U-shaped cross section along a peripheral edge portion excluding a front edge to which the flange portion 2 is joined, and the reinforcing pieces 4 are formed at both peripheral ends of the reinforcing edge 5. , 4 are formed continuously. Thereby, the strength of the cap body 1 is increased by the reinforcing edge 5, and the reinforcing edge 5 and the reinforcing pieces 4 and 4 are continuous, so that the cap body 1 and the collar portion 2 are unified in design. In addition, the discontinuity of the bending strength can be reduced at the joint between the cap body 1 and the heel part 2, and even if the heel part 2 is repeatedly deformed, the stress concentration is small and the durability is improved. Instead of the reinforcing pieces 4, 4, a short auxiliary hook part made of the same material as the cap body 1 is integrally formed at a part or all of the position where the hook part 2 is provided at the peripheral part of the cap body 1. May be. A plurality of mounting portions 8 for mounting interior tools such as a hammock and a headband (not shown) are provided along the lower edge inside the cap body 1.

  Thus, the holding edges 3 and 3 having a gradually increased thickness from the front part to the rear part are formed on both side edge parts of the collar part 2, and the front edge part of the cap body 1 is formed on the holding edges 3 and 3. Since the reinforcing pieces 4 and 4 projecting forward from the both side portions are continuously integrated, the shape of the collar portion 2 can be maintained even when the collar portion 2 is flexible, and the collar against the cap body 1 The joint strength of the part 2 can be further increased.

  The cap body 1 has the same hardness and strength as in the prior art, but the present invention is characterized in that the collar portion 2 provided to project to the front side of the cap body 1 has unprecedented flexibility. . When a falling object hits the collar part 2, the collar part 2 is deformed downward to prevent the impact and kinetic energy from the falling object from being transmitted to the cap body 1, so that the rotational moment applied to the cap body 1 is small. The helmet will not come off the head. Moreover, since the said collar part 2 absorbs an impact even if it collides with another worker, a product, parts, and materials during work, it does not damage the other party. In addition, when working in a narrow space, it is possible to roll the soft heel part 2 and enter even when the heel part 2 cannot enter due to an obstacle. Of course, in a normal state, the collar part 2 keeps its original shape.

1 cap body,
2 Buttocks,
3 retaining edges,
4 Reinforcing pieces,
5 Reinforcing edges,
6 recess,
7 steps,
8 Mounting part.

Claims (4)

In a resin helmet integrated with a collar projecting from a part or all of the peripheral edge including at least the front edge of the cap body, the elastic modulus at 0 ° C. to 50 ° C. measured by dynamic viscoelasticity measurement of the collar A helmet with a soft visor, characterized in that the value is in the range of 1 × 10 ⁶ to 4 × 10 ⁸ Pa.   A short auxiliary hook part made of the same material as that of the cap body is integrally formed in a part or all of the position where the hook part is provided at the peripheral part of the cap body, and the base part is provided so that the base part overlaps the auxiliary hook part. The helmet with a soft visor according to claim 1.   The helmet with a soft visor according to claim 1 or 2, wherein the previously formed opaque or transparent collar is held in a mold for molding the cap, and the cap is injection molded to integrate the cap and the collar. The helmet with a soft visor according to claim 1 or 2, wherein the cap body and the opaque or transparent heel portion are separately molded, and the joint portion is concavo-convexly fitted to integrate the cap body and the heel portion.

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