Helmet

Abstract

To provide a helmet to which a shock absorbing member can be attached even when an engaging projection cannot be formed at a location where the shock absorbing member is required.SOLUTION: A helmet 1 includes a cap body 2, and a hammock 3 attached to an inside of the cap body 2, wherein an engagement protrusion 22 is formed on an inner peripheral surface 2P of the cap body 2, and an impact absorbing member 5 that partially covers the inner peripheral surface 2P is provided between the inner peripheral surface 2P of the cap body 2 and the hammock 3, and the impact absorbing member 5 is integrally formed of a base surface portion and a plurality of protruding surface portions protruding from the base surface portion, and the impact absorbing member 5 is formed with an engaging piece extending in a direction intersecting a direction in which the protruding surface portions protrude, and the engaging piece is formed with an engaged hole that engages with the engaging protrusion 22.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a helmet, and more particularly to a helmet equipped with a hammock inside the shell. [Background technology]

[0002] Conventionally, in a helmet having a shell and a hammock provided inside the shell, a technique is known in which a protrusion is formed on the inner surface of the shell and an impact absorbing member is attached by engaging with this protrusion (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-15507 Summary of the Invention [Problem to be solved by the invention]

[0004] In the helmet described in the aforementioned patent document, when an accessory is attached to the helmet body, a bulge needs to be formed on the inner surface of the helmet body to ensure space for attaching the accessory. In this case, it is difficult to form an engaging protrusion for engaging the impact absorbing member in the bulge on the inner surface of the helmet body, so there are cases where the impact absorbing member cannot be attached.

[0005] The present invention was made in consideration of the above-mentioned circumstances, and the problem that the present invention aims to solve is to provide a helmet to which an impact absorbing member can be attached even when an engaging protrusion cannot be formed in the location where the impact absorbing member is required. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the present invention provides the following helmet.

[0007] (1) A helmet comprising a cap body and a hammock attached to the inside of the cap body, wherein an engaging protrusion is formed on the inner peripheral surface of the cap body, and an impact absorbing member that partially covers the inner peripheral surface is provided between the inner peripheral surface of the cap body and the hammock, the impact absorbing member being integrally formed by a base surface portion and a plurality of protruding surface portions protruding from the base surface portion, the impact absorbing member being formed with an engaging piece that extends in a direction intersecting the direction in which the protruding surface portions protrude, and the engaging piece being formed with an engaging hole that engages with the engaging protrusion.

[0008] (2) A helmet as described in (1), wherein a bulge portion that bulges toward the inside of the cap body is formed on the inner peripheral surface of the cap body, the engaging protrusion is formed adjacent to the bulge portion, and the impact absorbing member is provided inside the bulge portion.

[0009] (3) A helmet as described in (2), in which a wearing body can be assembled to the outside of the bulge portion of the outer shell of the helmet body.

[0010] (4) A helmet described in any one of (1) to (3), wherein a plurality of holes are opened in the base surface portion, and the protruding surface portion is formed in an arch portion that straddles each of the holes.

[0011] (5) The helmet described in (4), wherein the impact absorbing member is formed so that the arch portions straddle the holes in different directions.

[0012] (6) A helmet described in any one of (1) to (3), wherein the impact absorbing member is provided on the inner peripheral surface of the helmet body at at least one location on the forehead, the back of the head, and both left and right sides of the head.

[0013] (7) A helmet described in any one of (1) to (3), wherein the engaging piece of the impact absorbing member is formed integrally with the base surface portion or the protruding surface portion.

[0014] (8) A helmet described in any one of (1) to (3), wherein the protruding surface portion of the impact absorbing member is provided in contact with the inner peripheral surface of the cap body.

[0015] (9) A helmet described in any one of (1) to (3), wherein the impact absorbing member is detachable from the inner peripheral surface of the helmet body via the engaging piece.

[0016] (10) The helmet described in (9), wherein the impact absorbing member is detachable from the inner surface by being inserted between the connecting portions while the hammock is attached to the helmet body.

[0017] (11) A helmet described in any one of (1) to (3), wherein the engaging protrusion engages with the engaging hole by displacing the impact absorbing member toward the top of the head on the inner surface of the cap body.

[0018] (12) The helmet described in (11), wherein the engaging protrusion has a base end that protrudes in a plate-like shape along the vertical direction from the inner surface of the cap body, and a tip end formed at the inner end of the base end, and the engaged hole has an inserted portion formed in approximately the same shape as the tip end, and a groove portion extending downward from the inserted portion, and the engaging protrusion engages with the engaged hole by displacing the impact absorbing member toward the top of the head on the inner surface of the cap body so as to insert the base end into the groove with the tip end inserted into the inserted portion.

[0019] (13) The helmet according to (12), wherein a convex stripe is formed on the underside of the inserted portion of the impact absorbing member. [Effects of the Invention]

[0020] The helmet according to the present invention has the advantage that it is possible to attach an impact absorbing member even when an engaging protrusion cannot be formed in a location where an impact absorbing member is required. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 2 is a right side cross-sectional view showing the helmet according to the embodiment. [Figure 2] FIG. 2 is a bottom view showing the helmet according to the embodiment. [Figure 3] FIG. 10 is a bottom perspective view showing the mounting configuration of the front impact absorbing member. [Figure 4] FIG. 10 is a bottom perspective view showing the mounting configuration of the rear impact absorbing member. [Figure 5] 10A and 10B are an inner perspective view and an outer perspective view, respectively, of the front impact absorbing member. [Figure 6] 10A and 10B are an inner perspective view and an outer perspective view, respectively, of a rear impact absorbing member. DETAILED DESCRIPTION OF THE INVENTION

[0022] Next, the schematic configuration of a helmet 1 according to one embodiment of the present invention will be described using Figures 1 to 6. In this embodiment, the right side in Figure 1 is the front of the helmet 1, and the front side in the plane of the paper in Figure 1 is the right side of the helmet 1. That is, in this embodiment, the direction as seen by the user of the helmet 1 is defined as the direction in the helmet 1.

[0023] As shown in Fig. 1, helmet 1 according to this embodiment has a hammock 3 and multiple shock absorbing members 5, each made of a soft synthetic resin, detachably attached to an inner peripheral surface 2P of a cap body 2 made of a hard material such as synthetic resin. In helmet 1 according to this embodiment, a headband used by a user to wear helmet 1 on the head is attached to hammock 3, but for ease of explanation, the headband is not shown in Fig. 1.

[0024] The hammock 3 is a member that protects the user's head by forming a gap between the inner peripheral surface 2P of the cap body 2 and the user's head. As shown in FIG. 2 , the hammock 3 has an annular portion 30 formed in a circular ring shape at its central portion (the portion that abuts against the top of the user's head), and eight linking portions 31 formed radially extending from the annular portion 30. A linking hole 31a is opened at the tip of each linking portion 31. The linking hole 31a of each linking portion 31 engages with a locking portion 21 provided on the inner peripheral surface 2P of the cap body 2 so as to protrude inward, thereby fixing the hammock 3 to the inside of the cap body 2. In this way, the hammock 3 is attached to the cap body 2 via the multiple linking portions 31.

[0025] 2 and 3, of the eight linking parts 31, four linking parts 31 extending out to both the left and right sides are formed with band support parts 32. Specifically, of the four linking parts 31 extending out to both the left and right sides, band support parts 32 are formed in the front parts of the front two linking parts and in the rear parts of the rear two linking parts. A headband (not shown) is connected to holes formed in the band support parts 32.

[0026] 2, on the inner peripheral surface 2P of the cap body 2, a plurality of (four in this embodiment) shock absorbing members 5 are attached between the connecting portions 31 of the hammock 3 so as to partially cover the inner peripheral surface 2P. The shock absorbing members 5 are made of a material such as polyethylene, polypropylene, polylactic acid, polyamide, elastomer, etc. Among these, polyethylene is most suitable from the viewpoints of lightness, cost, and shock absorption.

[0027] In this embodiment, as shown in FIG. 3, the impact absorbing members 5 are attached to the inner peripheral surface 2P of the cap body 2 in four pieces: a front member 5F attached to the forehead, a rear member 5B attached to the back of the head, a right member 5R attached to the right side of the head, and a left member 5L attached to the left side of the head.

[0028] In the helmet 1 according to this embodiment, as described above, the shock absorbing members 5 are provided at four locations, front, back, left and right, on the inner circumferential surface 2P of the cap body 2, thereby making it possible to effectively absorb the shock when the user falls. Note that it is sufficient that the shock absorbing members 5 are provided at least in one location on the inner circumferential surface 2P of the cap body 2, namely, the forehead, the back of the head, or both the left and right sides of the head, and it is not necessarily necessary to provide them at all four locations, front, back, left and right, of the cap body 2.

[0029] In this embodiment, the four shock absorbing members 5 are formed to have a common basic structure. Furthermore, by forming each shock absorbing member 5 as a single unit, the manufacturing process is simplified and costs are reduced compared to a configuration in which multiple members are assembled.

[0030] In the helmet 1 according to this embodiment, as shown in Fig. 2, the cap body 2 is formed with engaging protrusions 22 that protrude inward from the inner peripheral surface 2P as joining portions for joining the impact absorbing members 5 to the inner peripheral surface 2P. In this embodiment, four engaging protrusions 22 are formed: a front engaging protrusion 22F that is attached to the front surface of the inner peripheral surface 2P, a rear engaging protrusion 22B that is attached to the rear surface, a right engaging protrusion 22R that is attached to the right side, and a left engaging protrusion 22L that is attached to the left side. A front member 5F, a rear member 5B, a right member 5R, and a left member 5L are attached to the front engaging protrusion 22F, the rear engaging protrusion 22B, the right engaging protrusion 22R, and the left engaging protrusion 22L, respectively.

[0031] 3 and 4, each engagement projection 22 is formed with a base end portion 22a that protrudes in a plate shape along the vertical direction from the inner circumferential surface 2P of the cap body 2, and a tip end portion 22b that is formed at the inner end portion of the base end portion 22a. In this embodiment, the tip end portion 22b is formed in a semicircular shape with an arc formed on the lower side.

[0032] In the helmet 1 according to this embodiment, as shown in Fig. 3, a front bulge 23F that bulges toward the inside of the shell 2 is formed on the front surface of the inner peripheral surface 2P of the shell 2. In addition, as shown in Fig. 4, a rear bulge 23B that bulges toward the inside of the shell 2 is formed on the rear surface of the inner peripheral surface 2P of the shell 2. In this embodiment, the front engagement protrusion 22F is formed adjacent to the upper side of the front bulge 23F, and the rear engagement protrusion 22B is formed adjacent to the upper side of the rear bulge 23B.

[0033] As shown in Fig. 4, a front mounting portion 24F, which is a recess to which accessories such as a headlight can be attached, is formed on the outside of the front bulging portion 23F in the outer shell of the cap body 2. Also, as shown in Fig. 3, a rear mounting portion 24B, which is a recess to which accessories such as a ventilation fan, a communication device, a battery, etc. can be attached, is formed on the outside of the rear bulging portion 23B in the outer shell of the cap body 2.

[0034] 5(a) and 5(b), the front member 5F is integrally formed of a planar base surface portion 51, a plurality of (ten in this embodiment) protruding surface portions 52 protruding forward from the base surface portion 51, and an engaging piece 53 extending in a direction intersecting the protruding direction of the protruding surface portions 52. In this embodiment, the surface of the base surface portion 51 opposite to the surface from which the protruding surface portions 52 protrude is formed as an inner surface 51a.

[0035] The front member 5F of the impact absorbing member 5 is attached by having a protruding surface portion 52 formed in the vertical center abut against the inside of a front bulge portion 23F formed on the inner circumferential surface 2P of the helmet body 2. Specifically, an engaging hole 54 that can engage with the front engaging protrusion 22F is formed in the engaging piece 53 of the front member 5F. The front member 5F is attached to the helmet body 2 by engaging the engaging hole 54 of the front member 5F with the front engaging protrusion 22F. This causes the inner surface 51a of the front member 5F to face the user's head. In this way, the area of ​​the front member 5F that abuts against the user's head can be relatively large, thereby improving the safety of the user when an impact is applied to the helmet 1.

[0036] In the front member 5F, the engaged hole 54 is formed with an inserted portion 54a formed in a semicircular shape that is substantially the same as the shape of the tip end 22b of the front engaging protrusion 22F, and a groove portion 54b extending downward from the inserted portion 54a. Then, with the tip end 22b inserted into the inserted portion 54a, the front member 5F is displaced toward the parietal portion on the inner circumferential surface 2P of the cap body 2 so that the base end 22a is inserted into the groove portion 54b. This causes the front engaging protrusion 22F to engage with the engaged hole 54. In this way, the front member 5F is attachable to and detachable from the inner circumferential surface 2P of the cap body 2 via the engaging piece 53.

[0037] As shown in Fig. 5(a), the front member 5F has a ridge portion 55 formed below the inserted portion 54a. When the front member 5F is attached to the front engagement projection 22F, the ridge portion 55 is located above the tip end 22b of the front engagement projection 22F, as shown in Fig. 1. This prevents the front member 5F from being displaced downward relative to the front engagement projection 22F, making it difficult for the front member 5F to come off the front engagement projection 22F.

[0038] 6(a) and 6(b), the rear member 5B is integrally formed of a planar base surface portion 61, a plurality of (twelve in this embodiment) protruding surface portions 62 protruding rearward from the base surface portion 61, and an engaging piece 63 extending in a direction intersecting the protruding direction of the protruding surface portions 62. In this embodiment, the surface of the base surface portion 61 opposite to the surface from which the protruding surface portions 62 protrude is formed as an inner surface 61a.

[0039] The rear member 5B of the impact absorbing member 5 is attached such that a protruding surface portion 62 formed in the vertical center portion abuts against the inner circumferential surface 2P of the cap body 2 and the inside of a rear bulging portion 23B formed on the inner circumferential surface 2P. In this embodiment, the protruding amount of the protruding surface portion 62 is adjusted to match the shape of the rear bulging portion 23B. That is, the protruding amount of the protruding surface portion 62 at the inner portion abutting against the rear bulging portion 23B is small, and the protruding amount of the protruding surface portion 62 at the outer portion abutting against the inner circumferential surface 2P is large. In this way, it is preferable that each protruding surface portion 62 is formed in a shape that abuts along the inner surface of the cap body 2 including the rear bulging portion 23B.

[0040] The engaging piece 63 of the rear member 5B has an engaged hole 64 that can engage with the rear engaging protrusion 22B. The rear member 5B is attached to the cap body 2 by engaging the engaged hole 64 of the rear member 5B with the rear engaging protrusion 22B. This causes the inner surface 61a of the rear member 5B to face the user's head. In this way, the area of ​​the rear member 5B that comes into contact with the user's head can be made relatively large, which improves the safety of the user when an impact is applied to the helmet 1.

[0041] In the rear member 5B, the engaged hole 64 is formed with an inserted portion 64a formed in a semicircular shape that is substantially the same as the shape of the tip end 22b of the rear engaging protrusion 22B, and a groove portion 64b extending downward from the inserted portion 64a. Then, with the tip end 22b inserted into the inserted portion 64a, the rear member 5B is displaced toward the parietal portion on the inner circumferential surface 2P of the cap body 2 so that the base end 22a is inserted into the groove portion 64b. This causes the rear engaging protrusion 22B to engage with the engaged hole 64. In this way, the rear member 5B is attachable to and detachable from the inner circumferential surface 2P of the cap body 2 via the engaging piece 63.

[0042] As shown in Figure 6(a), the rear member 5B has a convex ridge 65 formed below the inserted portion 64a. When the rear member 5B is attached to the rear engaging projection 22B, the convex ridge 65 is located above the tip 22b of the rear engaging projection 22B, as shown in Figure 1. This prevents the rear member 5B from being displaced downward relative to the rear engaging projection 22B, making it difficult for the rear member 5B to come off the rear engaging projection 22B.

[0043] As described above, in the helmet 1 according to this embodiment, the impact absorbing member 5 can be attached directly to the cap body 2 without using other members such as the hammock 3. This allows the impact absorbing member 5 to be attached to the cap body 2 regardless of how the hammock 3 and other members are attached to the cap body 2.

[0044] Moreover, the impact absorbing member 5 according to this embodiment can be attached to and detached from the inner circumferential surface 2P of the cap body 2 by engaging / disengaging the engaging protrusions 22 with the engaged holes. By making the impact absorbing member 5 attachable to and detachable from the inner circumferential surface 2P of the cap body 2 in this way, it becomes possible to easily clean and repair the impact absorbing member 5.

[0045] Furthermore, the impact absorbing members 5 (front member 5F and rear member 5B) according to this embodiment are configured so that the engaged holes 54, 64 formed in the engaging pieces 53, 63 engage with the engaging protrusions 22 (front engaging protrusions 22F and rear engaging protrusions 22B). This makes it possible to attach the impact absorbing members 5, even when bulging portions 23F, 23B are formed on the inner circumferential surface 2P of the helmet body 2, as in the helmet 1 according to this embodiment, because the engaged holes can engage with the engaging protrusions 22 adjacent to the bulging portions 23F, 23B. In other words, according to the helmet 1, even when it is not possible to form engaging protrusions 22 in locations where impact absorbing members 5 are required, such as in the bulging portions 23F, 23B, it is possible to attach the impact absorbing members 5 by engaging the engaged holes with the engaging protrusions 22 adjacent to the bulging portions 23F, 23B.

[0046] Furthermore, in the helmet 1 according to this embodiment, the impact absorbing members 5 are individually attached to the cap body 2, making it easy to attach, detach, or replace each impact absorbing member 5. In other words, if one impact absorbing member 5 becomes dirty or damaged, it is possible to replace just that impact absorbing member 5, thereby reducing the workload on the user.

[0047] Furthermore, in the helmet 1 according to this embodiment, the impact absorbing members 5 are attached to the shell 2, which is a member that is farther from the user's head than the hammock 3. This makes it possible to ensure a ventilation space between the head and the inner peripheral surface 2P of the shell 2. In other words, compared to a configuration in which the impact absorbing members 5 are provided on the hammock 3, the impact absorbing members 5 can be placed farther from the head, allowing air to circulate near the head and increasing the user's sense of coolness.

[0048] 2, the shock absorbing member 5 is detachable from the inner peripheral surface 2P by being inserted between the connecting portions 31 with the hammock 3 attached to the cap body 2. Therefore, even if the shock absorbing member 5 becomes dirty or damaged and needs to be replaced, there is no need to remove the hammock 3, which reduces the workload on the user.

[0049] In this embodiment, for reasons of breathability and cost, the shock absorbing members 5 are configured to partially cover the inner peripheral surface 2P of the cap body 2. As in this embodiment, it is desirable to provide a plurality of shock absorbing members 5 (four in this embodiment) in a planar form on the inner peripheral surface 2P of the cap body 2. In this case, it is desirable to form the inner surface of the shock absorbing members 5 with an area in the range of 30 to 50 square cm in order to compensate for the gaps in the shock-absorbing hammocks 3.

[0050] When the user of the helmet 1 receives an impact or the like from above while wearing the helmet 1, an upward frictional force is applied from the user's head to the impact absorbing members 5. For this reason, in this embodiment, the impact absorbing members 5 are displaced (upward) toward the top of the head on the inner circumferential surface 2P of the cap body 2, so that the engaging protrusions 22 engage with the engaged holes. As a result, when the user of the helmet 1 receives an impact or the like from above, the frictional force applied to the impact absorbing members 5 makes them less likely to come off.

[0051] As shown in Figures 5 and 6, a plurality of holes are opened in the base surface of the shock-absorbing member 5. The protruding surface portion is formed in an arch portion that straddles each hole in the horizontal direction. The shape of the shock-absorbing member 5 is not limited to the arch shape of this embodiment; it can also be a dome shape, a honeycomb shape, a plate shape, or other shape to achieve high energy absorption efficiency. The shock-absorbing member 5 may also be shaped like a spring member that absorbs shock by flexural deformation. The shock-absorbing member 5 may also be formed from a soft material such as an elastomer or rubber material to achieve shock absorption. The shock-absorbing member 5 may also be formed in a way that the holes in the arch portion straddle different directions.

[0052] The engaging piece formed on the impact absorbing member 5 may have other shapes such as a prism, a prism, a triangular prism, a cylinder, an arc, a convex shape, a square pyramid shape, etc. A prism shape extending in the sliding direction is most suitable in that it allows the impact absorbing member to be installed without interfering with the installation space for the accessory installed in the forehead inside the cap body. When the engaging piece is prism-shaped, it is preferable that the outer diameter is 12 mm to 40 mm because the engaging piece is less likely to break. [Explanation of symbols]

[0053] 1 helmet 2 cap body 2P Inner surface 3 Hammock 5 Impact absorbing member 5F Front member 5B Rear side member 5R Right side member 5L Left side member 21 Locking part 22 Engagement protrusion 22a Proximal end 22b Distal end 22F Front engaging protrusion 22B Rear engaging protrusion 22R Right side engaging protrusion 22L Left side engaging protrusion 23F Anterior bulge 23B Posterior bulge 24F Front recess 24B Rear recess 30 Circular section 31 Linking section 31a Connection hole 32 Band support part 51 Base part 51a Inner surface 52 Projection surface portion 53 Engagement piece 54 Engaged hole 54a Inserted portion 54b Groove portion 55 Convex portion 61 Base part 61a Inner surface 62 Projection surface portion 63 Engagement piece 64 Engaged hole 64a Inserted portion 64b Groove 65 Convex portion

Claims

1. The hat includes a hat body and a hammock attached to the inside of the hat body, An engagement protrusion is formed on the inner circumferential surface of the cap body, An impact absorbing member is provided between the inner peripheral surface of the cap body and the hammock, the impact absorbing member partially covering the inner peripheral surface, The impact absorbing member is integrally formed by a base surface portion and a plurality of protruding surface portions protruding from the base surface portion, The impact absorbing member is formed with an engagement piece extending in a direction intersecting the direction in which the protruding surface portion protrudes, The helmet has an engaging hole formed in the engaging piece that engages with the engaging protrusion.

2. A bulging portion that bulges toward the inside of the cap body is formed on the inner circumferential surface of the cap body, The engagement projection is formed adjacent to the bulge portion, The helmet according to claim 1 , wherein the impact absorbing member is provided inside the bulging portion.

3. 3. The helmet according to claim 2, wherein an attachment can be assembled to the outside of the bulge in the outer shell of the helmet body.

4. A plurality of holes are opened in the base surface portion, The helmet according to claim 1 , wherein the protruding surface portions are formed on arch portions that are formed across the holes.

5. The helmet according to claim 4, wherein the impact absorbing member is formed such that the arch portions straddle the holes in different directions.

6. 4. The helmet according to claim 1, wherein the impact absorbing member is provided on the inner circumferential surface of the helmet body at at least one of the front part, the back part, and both the left and right parts of the head.

7. The helmet according to claim 1 , wherein the engagement piece of the impact absorbing member is formed integrally with the base surface portion or the protruding surface portion.

8. The helmet according to any one of claims 1 to 3, wherein the protruding surface portion of the impact absorbing member is provided so as to abut against the inner circumferential surface of the helmet body.

9. The helmet according to claim 1 , wherein the impact absorbing member is detachable from the inner circumferential surface of the helmet body via the engaging piece.

10. The helmet according to claim 9, wherein the impact absorbing member is detachably attached to the inner circumferential surface by being inserted between the connecting portions in a state where the hammock is attached to the helmet body.

11. 4. The helmet according to claim 1, wherein the engaging projection is engaged with the engaging hole by displacing the impact absorbing member toward the top of the head on the inner circumferential surface of the helmet body.

12. the engaging projection includes a base end portion that protrudes in a plate shape along the up-down direction from the inner circumferential surface of the cap body, and a tip end portion that is formed at an inner end portion of the base end portion, the engaged hole includes an inserted portion formed in substantially the same shape as the tip portion, and a groove portion extending downward from the inserted portion, 12. The helmet according to claim 11, wherein the engaging protrusion engages with the engaging hole by displacing the impact absorbing member toward the top of the head on the inner circumferential surface of the helmet body so as to insert the base end into the groove while the tip end is inserted into the inserted portion.

13. The helmet according to claim 12, wherein a convex rib portion is formed on a lower side of the inserted portion of the impact absorbing member.

Images