Dual purpose helmet usable for bicycle and industrial applications

Abstract

To provide a dual-purpose helmet satisfying respective standard conditions in bicycle use and industrial use.SOLUTION: A dual-purpose helmet usable for bicycle use and industrial use, the dual-purpose helmet comprising: a cap body; a first shock absorbing liner disposed in an internal space of the cap body to protect at least a top of a head; A second impact absorbing liner for protecting at least the temporal region, a hammock disposed in an inner space of the cap body at a position spaced inward from the first impact absorbing liner, a first hammock hanger engaged with the first engaging portion of the cap body and extending from between the first impact absorbing liner and the second impact absorbing liner to be connected to the hammock, and a second hammock hanger engaged with the second engaging portion of the cap body and extending from between the first impact absorbing liner and the second impact absorbing liner to be connected to the hammock; The combination helmet according to claim 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a dual-purpose helmet that can be used for both cycling and industrial purposes. [Background technology]

[0002] Helmets are provided with impact absorbing liners depending on the application. For example, Patent Document 1 discloses that, for the purpose of improving penetration resistance and lightweight performance, the impact absorbing liner is made of a main component and a reinforcing component, which are separate components, and the main component and the reinforcing component are combined to form an impact absorbing liner with a shape that fits the inner surface of the helmet body, or that the main component is molded from a synthetic resin material with a high expansion ratio and the reinforcing component is molded from a synthetic resin material with a low expansion ratio. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-221948 Summary of the Invention [Problem to be solved by the invention]

[0004] The penetration resistance described in Patent Document 1 is one of the performance requirements for industrial helmets, but the required performance and the resulting structure of helmets differ between industrial and bicycle helmets, so they generally cannot be used interchangeably. Specifically, bicycle helmets have a larger area subjected to impact resistance tests than industrial helmets, while industrial helmets are required to meet stricter standards in dropped object tests on the top of the head than bicycle helmets.

[0005] In recent years, wearing bicycle helmets has become a recommended practice, so at large work sites where workers must travel by bicycle, they are required to carry both an industrial helmet and a bicycle helmet, and to switch from the industrial helmet to the bicycle helmet when getting on their bicycle. However, carrying two helmets on site is a heavy burden for workers and can also hinder their work.

[0006] The present invention has been made in consideration of the above problems, and has as its object to provide a dual-purpose helmet that satisfies the standard requirements for both bicycle and industrial use. [Means for solving the problem]

[0007] A dual-purpose helmet according to one aspect of the present invention can be used for cycling and industrial purposes, and comprises a shell, a first impact absorbing liner disposed in the interior space of the shell for protecting at least the top of the head, a second impact absorbing liner disposed in the interior space of the shell so as to be separable from the first impact absorbing liner for protecting at least the sides of the head, a hammock disposed in the interior space of the shell at a position spaced inward from the first impact absorbing liner, a first hammock hanger that engages with a first engagement portion of the shell and extends from between the first impact absorbing liner and the second impact absorbing liner to connect to the hammock, and a second hammock hanger that engages with a second engagement portion of the shell and extends from between the first impact absorbing liner and the second impact absorbing liner to connect to the hammock.

[0008] A dual-purpose helmet according to this aspect of the present invention further includes a chin strap having a first portion that engages with the first engagement portion of the helmet body and extends from between the second impact absorbing liner and the helmet body, and a second portion that engages with the second engagement portion of the helmet body and extends from between the second impact absorbing liner and the helmet body.

[0009] The dual-purpose helmet according to one aspect of the present invention further includes a chin strap having a third portion that passes through a rear and central portion of the first impact absorbing liner and engages with the first impact absorbing liner.

[0010] In a dual-purpose helmet according to one aspect of the present invention, the first hammock hanger has a first stopper portion that engages with the first engagement portion and faces the downward-facing surface of the first impact absorbing liner, and the second hammock hanger has a second stopper portion that engages with the second engagement portion and faces the downward-facing surface of the second impact absorbing liner.

[0011] A dual-purpose helmet according to one aspect of the present invention has the first engagement portion provided on the front and right side of the helmet body, the second engagement portion provided on the front and left side of the helmet body, and further comprises a third hammock hanger that engages with a third engagement portion provided on the rear and right side of the helmet body, extends from between the first impact absorbing liner and the second impact absorbing liner and is connected to the hammock, and a fourth hammock hanger that engages with a fourth engagement portion provided on the rear and left side of the helmet body, extends from between the first impact absorbing liner and the second impact absorbing liner and is connected to the hammock.

[0012] The dual-purpose helmet according to an aspect of the present invention further includes a ratchet that engages with the first impact absorbing liner.

[0013] In a dual-purpose helmet according to one aspect of the present invention, the second impact absorbing liner is annular with an opening at the front and is formed so that it can be positioned below the first impact absorbing liner so as to surround the sides and back of the head. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a dual-purpose helmet that meets the standard requirements for both bicycle and industrial use. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view from above of a dual-purpose helmet according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view showing a state in which the cap body is removed from FIG. [Figure 3] FIG. 3 is a perspective view showing a state in which a first impact absorbing liner is removed from FIG. 2. [Figure 4] FIG. 4 is a perspective view showing a state in which the hammock is removed from FIG. 3. [Figure 5] 1 is a perspective view from below of a dual-purpose helmet according to an embodiment of the present invention. FIG. [Figure 6] FIG. 4 is a bottom view showing a state in which a first impact absorbing liner is disposed on the cap body. [Figure 7] FIG. 7 is a bottom view showing the hammock in the state shown in FIG. 6. [Figure 8] FIG. 8 is a bottom view showing a state in which a second impact absorbing liner is disposed in FIG. 7. [Figure 9] 1 is a cross-sectional view of a dual-purpose helmet taken along a plane perpendicular to the front-to-rear direction. [Figure 10] FIG. 10 is a perspective view of the periphery of the first engagement portion as seen from below, showing how the first portion of the chin strap engages with the first engagement portion. [Figure 11] FIG. 10 is a perspective view of the periphery of the first engagement portion as seen from below, showing the state in which the first portion of the chin strap is engaged with the first engagement portion. [Figure 12] This is a perspective view of the area around the first engagement portion seen from below, showing how the first hammock hanger engages after the first portion of the chin strap engages with the first engagement portion. [Figure 13] FIG. 10 is a perspective view of the first engagement portion and its periphery seen from below, showing the state in which the first hammock hanger is engaged. [Figure 14] FIG. 10 is a perspective view of the periphery of the first engagement portion as seen from below, showing the state in which the second impact absorbing liner is disposed after the first hammock hanger is engaged. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are merely examples, and are not intended to exclude various modifications or applications of techniques not explicitly described below. In other words, the present invention can be implemented with various modifications within the scope of its spirit. Furthermore, in the following description of the drawings, identical or similar parts are denoted by identical or similar reference numerals. The drawings are schematic and do not necessarily correspond to actual dimensions, ratios, etc. Parts in the drawings may have different dimensional relationships or ratios.

[0017] In this embodiment, for ease of explanation, when a wearer is wearing a dual-purpose helmet, the direction of the wearer's line of sight is defined as forward, and the direction opposite to forward is defined as backward. The direction perpendicular to the thus-defined forward and backward direction on the horizontal plane is defined as the left-right direction. Note that left and right are determined based on the wearer's line of sight. Furthermore, the direction of the top of a person's head is defined as upward, and the direction opposite to upward is defined as downward.

[0018] Terms and / or numerical values ​​that represent shapes and / or geometric conditions do not need to be bound by strict meanings and may be interpreted as including a range within which similar functions may be expected. For example, "parallel" and / or "orthogonal" fall under the above terms.

[0019] When a certain configuration is expressed as being "above," "below," "upper," "lower," "above," or "below" another configuration, this may include a configuration in which the certain configuration is in direct contact with the other configuration, and a configuration in which another configuration is included between the certain configuration and the other configuration. In other words, a configuration in which another configuration is included between the certain configuration and the other configuration may be expressed as a configuration indirectly in contact with the other configuration. Furthermore, the expressions "above," "upper side," or "above" are interchangeable with the expressions "below," "lower side," or "below." In other words, the up-down direction may be reversed. The same applies to left and right.

[0020] A dual-purpose helmet 1 according to one embodiment of the present invention is a dual-purpose helmet usable for both cycling and industrial use. In this embodiment, "usable for industrial use" refers to meeting the standards for "flying / falling object protection" (protecting against danger from flying / falling objects) and "fall protection" (protecting against danger from falls) set forth in the "Safety Helmet Standards" established by the Ministry of Health, Labor, and Welfare under Article 42 of the Industrial Safety and Health Act. Furthermore, "usable for cycling" refers to meeting the standards set forth by the Consumer Product Safety Association (SG). Furthermore, dual-purpose helmet 1 may be a safety helmet for protection against falls that meets the shock absorption requirements for impact force transmitted to a mannequin head in Annex 2 of the industrial standard T8131:2000.

[0021] To meet the standards for bicycle helmets, the entire head must be covered by an impact-absorbing liner, while to meet the standards for industrial helmets, a hammock must be provided to cushion the top of the head from the impact of falling objects.

[0022] In this regard, the dual-purpose helmet 1 according to one embodiment of the present invention has a shell 10, a first impact absorbing liner 20, a second impact absorbing liner 30, and a hammock 40, and may also have a chin strap 50 and a ratchet 60. The dual-purpose helmet 1 will be described in detail below with reference to the drawings.

[0023] Fig. 1 shows a perspective view of a dual-purpose helmet 1 according to one embodiment of the present invention as seen from above. Figs. 2 to 4 are drawings showing the dual-purpose helmet 1 shown in Fig. 1 with the outer members removed one by one.

[0024] Specifically, Fig. 2 is a perspective view showing the state in Fig. 1 with the cap body 10 removed, mainly showing the first impact absorbing liner 20 arranged in the internal space of the cap body 10. Fig. 3 is a perspective view showing the state in Fig. 2 with the first impact absorbing liner 20 and chin strap 50 removed, showing the hammock 40 arranged at a position further inward from the first impact absorbing liner 20, and the second impact absorbing liner 30 arranged separably from the first impact absorbing liner 20 and for protecting at least the temporal region of the head. Furthermore, Fig. 4 is a perspective view showing the state in Fig. 3 with the hammock 40 and ratchet 60 removed, showing the second impact absorbing liner 30.

[0025] 5 is a perspective view of the dual-purpose helmet 1 as seen from below, and Figures 6 to 8 are bottom views showing how the components are assembled one by one from the inside of the shell 10 of the dual-purpose helmet 1. Note that the chin strap 50 and ratchet 60 are omitted from Figures 5 to 8.

[0026] As shown in Figures 6 to 8, for example, the dual-purpose helmet 1 has a first impact absorbing liner 20 disposed in the internal space of the cap body 10 (Figure 6). At this time, the first impact absorbing liner 20 may be in close contact with the inner surface of the cap body 10. Next, the hammock legs 41 are engaged with the engaging parts 11 of the cap body 10, thereby disposing the hammock 40 in a position spaced inward from the first impact absorbing liner 20 (Figure 7). The dual-purpose helmet 1 may then be assembled by disposing the second impact absorbing liner 30 from above so as to sandwich the hammock legs 41 (Figure 8).

[0027] In this way, by disposing the first impact absorbing liner 20 and the second impact absorbing liner 30 separably, the hammock legs 41 can be passed between the first impact absorbing liner 20 and the second impact absorbing liner 30. This makes it possible to fix the hammock 40 to the cap body 10 while disposing impact absorbing liners over a wide area of ​​the cap body 10, without having to perform additional work to drill holes in the impact absorbing liners to pass the hammock legs 41 through, and then passing the hammock legs 41 through those holes, a complicated assembly process.

[0028] Each component will be described in more detail below.

[0029] The cap body 10 is a hard member that forms the outer shape of the helmet and may be made of a synthetic resin such as ABS resin or polycarbonate resin. The cap body 10 may have a hemispherical dome shape that covers the wearer's head, specifically the top, forehead, back, and sides of the head. The thickness of the cap body 10 may be approximately uniform or may vary from top to side, front to back, and back. For example, the thickness of the top may be increased to further improve penetration resistance, while the thickness of other parts may be reduced to achieve both penetration resistance and light weight.

[0030] The first impact absorbing liner 20 may be disposed at the innermost part of the interior space of the helmet body 10 to protect the top of the wearer's head. The first impact absorbing liner 20 may have a hemispherical dome shape to match the shape of the top of the head. The first impact absorbing liner 20 is designed to protect the top of the head, but may also protect the forehead, back of the head, and sides, or parts of these. Specifically, it may cover the range of impact resistance required for flying and falling object testing for industrial helmets. In the dual-purpose helmet 1, the hammock 40 contacts the top of the wearer's head, and the first impact absorbing liner 20 does not need to contact the top of the wearer's head during normal use.

[0031] The second impact absorbing liner 30 is disposed in the internal space of the cap body so as to be separable from the first impact absorbing liner 20, and is a member for protecting at least the sides of the wearer's head. The second impact absorbing liner 30 may have an annular shape to protect the front and back of the head in addition to the sides of the head.

[0032] Furthermore, the second impact absorbing liner 30 does not need to be completely annular, and may have an annular shape with openings formed in the front so as to surround the sides and back of the head, as shown in Figure 4. The second impact absorbing liner 30 may cover an area that is subject to testing for bicycle helmets but is outside the range subject to flying and falling object testing for industrial helmets. Unlike the first impact absorbing liner 20, the second impact absorbing liner 30 may come into direct contact with the wearer's sides, as well as the forehead or back of the head.

[0033] As shown in FIG. 5, the inner surface of the dual-purpose helmet 1 is formed by combining the first impact absorbing liner 20 and the second impact absorbing liner 30, and can protect the entire head of the wearer.

[0034] The first impact absorbing liner 20 and the second impact absorbing liner 30 may be made of elastic synthetic resin foam such as urethane foam. Furthermore, the hardness or density of the synthetic resin foam of the first impact absorbing liner 20 and the second impact absorbing liner 30 may be the same or different. For example, the first impact absorbing liner 20 may be made of a higher hardness or density to improve penetration resistance, or may be made of a lower hardness or density to reduce weight. Furthermore, the second impact absorbing liner 30, which may come into direct contact with the wearer, may be made of a lower hardness or density to improve impact absorption performance.

[0035] Fig. 9 shows a cross-sectional view of the dual-purpose helmet 1 taken along a plane perpendicular to the front-to-rear direction. As shown in Fig. 9, the hammock 40 is positioned between the first impact absorbing liner 20 and the wearer's head so as to create a space between the cap body 10 and the wearer's head. The length of the hammock legs 41 is determined so as to create this space. As a result, when the helmet is normally worn, the hammock 40 comes into contact with the wearer's head, and the dual-purpose helmet 1 is secured in place by the hammock 40, the chin strap 50, and the ratchet 60. When an impact is applied to the top of the head, for example, the hammock legs 41 extend to absorb the impact.

[0036] The hammock 40 has a plurality of hammock legs 41, loop strings 44 connecting the hammock legs 41, and a top pad 45. A hammock hanger 42 located at one end of the hammock legs 41 engages with the engaging portion 11 of the cap body 10, and the hammock legs 41 extend from between the first impact absorbing liner 20 and the second impact absorbing liner 30, with the other end connected to the loop strings 44 connecting the hammock legs 41.

[0037] In Fig. 7, the engaging portion 11 provided on the front right side of the cap body 10 is referred to as the first engaging portion 11a, and the engaging portion 11 provided on the front left side of the cap body 10 is referred to as the second engaging portion 11b. In addition, the engaging portion 11 provided on the rear right side of the cap body 10 is referred to as the third engaging portion 11c, and the engaging portion 11 provided on the rear left side of the cap body 10 is referred to as the fourth engaging portion 11d. When the first engaging portion 11a to the fourth engaging portion 11d are not particularly distinguished from one another, they are simply referred to as the engaging portions 11.

[0038] 7, the first hammock leg 41a engages with the first engagement portion 11a and extends from between the first impact absorbing liner 20 and the second impact absorbing liner 30 to be connected to the loop string 44, the second hammock leg 41b engages with the second engagement portion 11b and extends from between the first impact absorbing liner 20 and the second impact absorbing liner 30 to be connected to the loop string 44, the third hammock leg 41c engages with the third engagement portion 11c and extends from between the first impact absorbing liner 20 and the second impact absorbing liner 30 to be connected to the loop string 44, and the fourth hammock leg 41d engages with the fourth engagement portion 11d and extends from between the first impact absorbing liner 20 and the second impact absorbing liner 30 to be connected to the loop string 44. When the first hammock leg 41a to the fourth hammock leg 41d are not particularly distinguished from one another, they are simply referred to as hammock legs 41.

[0039] Figures 10 to 14 show perspective views of the area around the first engagement portion 11a viewed from below. Figures 10 to 14 show the assembly process, in which the first portion 51 of the chinstrap 50 is engaged with the first engagement portion 11a (Figures 10 and 11), the first hammock hanger 42a is engaged (Figures 12 and 13), and finally the second impact absorbing liner 30 is arranged so as to sandwich the hammock leg portion 41.

[0040] 10 and 11, the chin strap 50 has a first portion 51 that engages with the first engagement portion 11a of the cap body 10 and extends from between the second impact absorbing liner 30 and the cap body 10, and a second portion 52 that engages with the second engagement portion 11b of the cap body 10 and extends from between the second impact absorbing liner 30 and the cap body 10. As shown in FIG. 14, the first portion 51 and the second portion 52 extend from between the second impact absorbing liner 30 and the cap body 10, so that the chin strap 50 hangs down from a position a little away from the wearer's face, and therefore interference with the wearer's eyeglasses, etc., can be avoided.

[0041] 9, the chinstrap 50 may have a third portion 53 that passes through the rear and central portion 20a of the first impact absorbing liner 20 and engages with the first impact absorbing liner 20. The third portion 53 may be connected to both the first portion 51 and the second portion 52. With this configuration, chin strap 50 has not only first portion 51 and second portion 52 that engage with cap body 10, but also third portion 53 that engages with first impact absorbing liner 20, making it possible to reduce the risk of first impact absorbing liner 20 coming off the head even in the event of a fall from the bicycle. Also, first portion 51 and second portion 52 of chin strap 50 are provided so as to be detachably engageable with first engagement portion 11a and second engagement portion 11b of cap body 10, respectively, eliminating the need to drill holes in the cap body with rivets or the like to attach the chin strap.

[0042] 12 and 13 show how first hammock hanger 42a engages with first engagement portion 11a after the first portion of the chinstrap engages with first engagement portion 11a. As shown in Figs. 12 and 13, first hammock hanger 42a may be engaged with first engagement portion 11a so that first portion 51 of chinstrap 50 is sandwiched between cap body 10 and first hammock hanger 42a. This secures chinstrap 50.

[0043] 12 and 13, the first hammock leg 41a preferably has a first stopper portion 43 that faces the downward-facing surface 20b of the first impact absorbing liner 20. As a result, after the first impact absorbing liner 20 is disposed on the cap body 10, by engaging the hammock leg 41 with the engaging portion 11 of the cap body 10, the first stopper portion 43 locks the first impact absorbing liner 20 so that it does not come off.

[0044] 9, the dual-purpose helmet 1 may further include a ratchet 60. The ratchet 60 may be connected to the cap body 10, or may be engaged with the first impact absorbing liner 20. [Explanation of symbols]

[0045] 1... dual-use helmet, 10... cap body, 11... engagement portion, 11a... first engagement portion, 11b... second engagement portion, 11c... third engagement portion, 11d... fourth engagement portion, 20... first impact absorbing liner, 20a... portion, 20b... face, 30... second impact absorbing liner, 40... hammock, 41... hammock leg, 41a... first hammock leg, 41b... second hammock leg, 41c... third Hammock leg, 41d...fourth hammock leg, 42...hammock hanger, 42a...first hammock hanger, 42b...second hammock hanger, 42c...third hammock hanger, 42d...fourth hammock hanger, 43...first stopper, 44...loop string, 45...top pad, 51...first part, 52...second part, 53...third part, 60...ratchet

Claims

1. A dual-purpose helmet that can be used for both bicycle and industrial purposes, The hat body and a first impact absorbing liner disposed in the interior space of the cap body to protect at least the top of the head; a second impact absorbing liner disposed in the interior space of the cap body so as to be separable from the first impact absorbing liner and for protecting at least the sides of the head; a hammock disposed in an internal space of the cap body at a position spaced inward from the first impact absorbing liner; a first hammock hanger that engages with the first engagement portion of the cap body, extends from between the first impact absorbing liner and the second impact absorbing liner, and is connected to the hammock; a second hammock hanger that engages with the second engagement portion of the cap body, extends from between the first impact absorbing liner and the second impact absorbing liner, and is connected to the hammock; A dual-purpose helmet.

2. The helmet further includes a chin strap having a first portion that engages with the first engagement portion of the cap body and extends from between the second impact absorbing liner and the cap body, and a second portion that engages with the second engagement portion of the cap body and extends from between the second impact absorbing liner and the cap body, The dual-purpose helmet according to claim 1.

3. a chin strap having a third portion that passes through a rear and central portion of the first impact absorbing liner and engages with the first impact absorbing liner; The dual-purpose helmet according to claim 1.

4. The first hammock hanger has a first stopper portion that engages with the first engagement portion and faces the downward surface of the first shock absorbing liner, The second hammock hanger has a second stopper portion that engages with the second engagement portion and faces the downward surface of the second shock absorbing liner. The dual-purpose helmet according to claim 1.

5. the first engagement portion is provided on a front right portion of the cap body, the second engaging portion is provided on a front left portion of the cap body, moreover, a third hammock hanger that engages with a third engagement portion provided on the rear and right portion of the cap body, extends from between the first impact absorbing liner and the second impact absorbing liner, and is connected to the hammock; a fourth hammock hanger that engages with a fourth engagement portion provided on the rear and left side of the cap body, extends from between the first impact absorbing liner and the second impact absorbing liner, and is connected to the hammock, The dual-purpose helmet according to claim 1.

6. further comprising a ratchet that engages with the first shock absorbing liner; The dual-purpose helmet according to claim 1.

7. The second impact absorbing liner is annular with an opening formed in the front, and is formed so as to be able to be disposed below the first impact absorbing liner so as to surround the temporal and occipital regions of the human head. The dual-purpose helmet according to claim 1.

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