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 specifically, to a helmet provided with a hammock inside a cap body.

Background Art

[0002] Conventionally, in a helmet including a cap body and a hammock provided inside the cap body, a technique is known in which a protrusion is formed on the inner surface of the cap body, and a shock-absorbing member is engaged with and attached to this protrusion (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the helmet described in the above patent document, when a configuration for attaching clothing items to the cap body is adopted, it is necessary to form a bulging portion on the inner surface of the cap body in order to secure a space for attaching the clothing items. At this time, since it is difficult to form an engaging protrusion for engaging the shock-absorbing member on the bulging portion of the inner surface of the cap body, there are cases where the shock-absorbing member cannot be attached.

[0005] The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is to provide a helmet capable of attaching a shock-absorbing member even when an engaging protrusion cannot be formed at a location where the shock-absorbing member is required.

Means for Solving the Problems

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

[0007] The helmet comprises a helmet body and a hammock attached to the inside of the helmet body, with engaging protrusions formed on the inner circumferential surface of the helmet body, and a shock-absorbing member provided between the inner circumferential surface of the helmet body and the hammock, partially covering the inner circumferential surface, the shock-absorbing member being integrally formed of a base surface and a plurality of protruding surface portions projecting from the base surface, the shock-absorbing member having an extended portion extending in a direction intersecting the direction in which the protruding surface portions project, and an engaging piece formed thereon, at least one side end face of which is continuous with the side end face of the base surface, and the extended portion of the engaging piece having the protruding surface portion in the thickness direction of the shock-absorbing member protruding end face A hole to engage with the engaging projection is formed at a different position from the engaging projection, and when the engaging projection and the hole to engage, the protruding surface portion is formed at a different location on the inner circumferential surface from the engaging projection at a different position in the thickness direction of the shock absorbing member. the aforementioned protruding end face contact A helmet wherein bulging portions are formed on the front and rear sides of the inner circumferential surface of the helmet body, the engaging projection is formed adjacent to the bulging portions, the impact absorbing member is provided inside the bulging portions, and front recesses and rear recesses are formed on the outer side of the bulging portions of the outer shell of the helmet body, to which an attachment can be assembled. [Effects of the Invention]

[0008] The helmet according to the present invention has the advantage that impact-absorbing members can be attached even when it is not possible to form engaging protrusions in the areas where impact-absorbing members are needed. [Brief explanation of the drawing]

[0009] [Figure 1] A right side cross-sectional view showing the helmet according to this embodiment. [Figure 2] A bottom view showing the helmet according to this embodiment. [Figure 3] A downward perspective view showing the mounting configuration of the front impact-absorbing member. [Figure 4] A downward perspective view showing the mounting configuration of the rear shock-absorbing member. [Figure 5] (a) and (b) are internal and external perspective views of the front impact-absorbing member, respectively. [Figure 6] (a) and (b) are internal and external perspective views of the rear shock-absorbing member, respectively. [Modes for carrying out the invention]

[0010] Next, the schematic configuration of the 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 described as the front of the helmet 1, and the near side in the plane of the paper in Figure 1 is described as the right side of the helmet 1. That is, in this embodiment, the direction as seen from the user of the helmet 1 is defined as the direction of the helmet 1.

[0011] As shown in Figure 1, the helmet 1 according to this embodiment has a shell 2 made of a hard material such as synthetic resin, and a hammock 3 and a plurality of impact-absorbing members 5, each made of a soft synthetic resin, are detachably attached to the inner circumferential surface 2P of the shell 2. In the helmet 1 according to this embodiment, a headband used by the user to wear the helmet 1 on their head is attached to the hammock 3, but for the sake of explanation, the illustration of the headband in Figure 1 is omitted.

[0012] The hammock 3 is a component that protects the user's head by forming a gap between the inner circumferential surface 2P of the helmet body 2 and the user's head. As shown in Figure 2, the hammock 3 comprises an annular portion 30 formed in a ring shape in the central part (the part that contacts the top of the user's head) and eight connecting portions 31 formed radially extending from the annular portion 30. A connecting hole 31a is opened at the tip of each connecting portion 31. The hammock 3 is fixed to the inside of the helmet body 2 by the engagement of the connecting hole 31a in each connecting portion 31 with a locking portion 21 that is provided protruding inward from the inner circumferential surface 2P of the helmet body 2. In this way, the hammock 3 is attached to the helmet body 2 via multiple connecting portions 31.

[0013] As shown in Figures 2 and 3, of the eight connecting parts 31, band support parts 32 are formed on four connecting parts 31 that extend to both the left and right sides. Specifically, of the four connecting parts 31 that extend to both the left and right sides, band support parts 32 are formed on the front of the two front connecting parts and on the rear of the two rear connecting parts. A headband (not shown) is connected to the holes formed in the band support parts 32.

[0014] As shown in FIG. 2, on the inner peripheral surface 2P of the cap body 2, between the coupling portions 31 of the hammock 3, a plurality (four in this embodiment) of shock absorbing members 5 that partially cover the inner peripheral surface 2P are attached. As the material of the shock absorbing member 5, polyethylene, polypropylene, polylactic acid, polyamide, elastomer, etc. are adopted. Among these, polyethylene is most suitable from the viewpoints of light weight, cost, and shock absorbency.

[0015] In this embodiment, as shown in FIG. 3, the shock absorbing members 5 are four in number: a front side member 5F attached to the front head portion, a rear side member 5B attached to the rear head portion, a right side member 5R attached to the right side head portion, and a left side member 5L attached to the left side head portion, which are attached on the inner peripheral surface 2P of the cap body 2.

[0016] In the helmet 1 according to this embodiment, by providing the shock absorbing members 5 at four locations on the inner peripheral surface 2P of the cap body 2, namely, front, rear, left, and right, it is possible to effectively absorb the impact when the user falls. Note that the shock absorbing members 5 may be provided at at least any one of the front head portion, rear head portion, and left and right side head portions on the inner peripheral surface 2P of the cap body 2, and it is not necessarily required to be provided at all four locations of the front, rear, left, and right of the cap body 2.

[0017] In this embodiment, the four shock absorbing members 5 are formed so that their basic structures are common. Also, the shock absorbing members 5 are integrally formed respectively, thus simplifying the manufacturing process and suppressing the cost as compared with the configuration of assembling a plurality of members.

[0018] In the helmet 1 according to the present embodiment, as shown in FIG. 2, on the inner peripheral surface 2P of the cap body 2, an engaging protrusion 22 that protrudes inward is formed as a joining portion for joining the shock absorbing member 5 to the inner peripheral surface 2P. The engaging protrusion 22 in the present embodiment is formed by four protrusions: a front engaging protrusion 22F provided on the front surface of the inner peripheral surface 2P, a rear engaging protrusion 22B provided on the rear surface, a right engaging protrusion 22R provided on the right side surface, and a left engaging protrusion 22L provided on the left side surface. The front member 5F, the rear member 5B, the right member 5R, and the left member 5L are respectively attached to the front engaging protrusion 22F, the rear engaging protrusion 22B, the right engaging protrusion 22R, and the left engaging protrusion 22L.

[0019] As shown in FIGS. 3 and 4, each engaging protrusion 22 is formed with a base end portion 22a that protrudes in a plate shape along the vertical direction from the inner peripheral surface 2P of the cap body 2, and a tip end portion 22b formed at the inner end portion of the base end portion 22a. In the present embodiment, the tip end portion 22b is formed in a semi-circular shape with an arc formed on the lower side.

[0020] In the helmet 1 according to the present embodiment, as shown in FIG. 3, a front bulging portion 23F that bulges inward of the cap body 2 is formed on the front surface of the inner peripheral surface 2P of the cap body 2. Further, as shown in FIG. 4, a rear bulging portion 23B that bulges inward of the cap body 2 is formed on the rear surface of the inner peripheral surface 2P of the cap body 2. In the present embodiment, the front engaging protrusion 22F is formed adjacent to the upper side of the front bulging portion 23F, and the rear engaging protrusion 22B is formed adjacent to the upper side of the rear bulging portion 23B.

[0021] As shown in FIG. 4, in the outer shell of the cap body 2, a front mounting portion 24F, which is a concave portion where a wearing body such as a headlight can be assembled, is formed outside the front bulging portion 23F. Further, as shown in FIG. 3, in the outer shell of the cap body 2, a rear mounting portion 24B, which is a concave portion where a wearing body such as a ventilation fan, a communication device, and a battery can be assembled, is formed outside the rear bulging portion 23B.

[0022] As shown in Figures 5(a) and (b), the front member 5F is integrally formed from a planar base portion 51, a plurality of (ten in this embodiment) protruding surface portions 52 projecting forward from the base portion 51, and engaging pieces 53 extending in a direction intersecting the direction in which the protruding surface portions 52 project. In this embodiment, the surface of the base portion 51 opposite to the surface from which the protruding surface portions 52 project is formed as the inner surface 51a.

[0023] 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 the front bulge portion 23F formed on the inner circumferential surface 2P of the helmet body 2. Specifically, the engaging piece 53 of the front member 5F has an engaging hole 54 that can engage with the front engaging projection 22F. 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 projection 22F. This configuration directs the inner surface 51a of the front member 5F toward the user's head. In this way, the area in contact with the user's head by the front member 5F can be made relatively large, thereby improving the user's safety when the helmet 1 is subjected to impact.

[0024] In the front member 5F, the engagement hole 54 is formed with an insertion portion 54a that is semicircular in shape, substantially the same as the shape of the tip portion 22b of the front engagement projection 22F, and a groove portion 54b that extends downward from the insertion portion 54a. With the tip portion 22b inserted into the insertion portion 54a, the front member 5F is displaced toward the crown of the head on the inner circumferential surface 2P of the helmet body 2 so that the base portion 22a is inserted into the groove portion 54b. As a result, the front engagement projection 22F engages with the engagement hole 54. In this way, the front member 5F is detachably attached to the inner circumferential surface 2P of the helmet body 2 via the engagement piece 53.

[0025] As shown in Figure 5(a), a protruding portion 55 is formed on the lower side of the insertion portion 54a of the front member 5F. When the front member 5F is assembled to the front engaging projection 22F, the protruding portion 55 is positioned above the tip portion 22b of the front engaging projection 22F, as shown in Figure 1. This restricts the downward displacement of the front member 5F relative to the front engaging projection 22F, making it difficult for the front member 5F to detach from the front engaging projection 22F.

[0026] As shown in Figures 6(a) and (b), the rear member 5B is integrally formed by a planar base portion 61, a plurality of (twelve in this embodiment) protruding surface portions 62 projecting rearward from the base portion 61, and engaging pieces 63 extending in a direction intersecting the direction in which the protruding surface portions 62 project. In this embodiment, the surface of the base portion 61 opposite to the surface from which the protruding surface portions 62 project is formed as the inner surface 61a.

[0027] In the impact-absorbing member 5, the rear member 5B has a protruding surface 62 formed in the vertical center that abuts against the inner circumferential surface 2P of the helmet body 2 and the inside of the rear bulge 23B formed on the inner circumferential surface 2P. In this embodiment, the amount of protrusion of the protruding surface 62 is adjusted to match the shape of the rear bulge 23B. That is, the protrusion of the protruding surface 62 at the inner part that abuts against the rear bulge 23B is small, and the protrusion of the protruding surface 62 at the outer part that abuts against the inner circumferential surface 2P is large. In this way, it is preferable that each protruding surface 62 is formed in a shape that abuts along the inner surface of the helmet body 2, including the rear bulge 23B.

[0028] The engaging piece 63 of the rear member 5B has an engaging hole 64 that can engage with the rear engaging projection 22B. The rear member 5B is attached to the helmet shell 2 by engaging the engaging hole 64 of the rear member 5B with the rear engaging projection 22B. This configuration directs the inner surface 61a of the rear member 5B toward the user's head. In this way, the area of ​​the rear member 5B that contacts the user's head can be made relatively large, thereby improving the user's safety when the helmet 1 is subjected to impact.

[0029] In the rear member 5B, the engagement hole 64 is formed with an insertion portion 64a that is semicircular in shape, substantially the same as the shape of the tip portion 22b of the rear engagement projection 22B, and a groove portion 64b that extends downward from the insertion portion 64a. With the tip portion 22b inserted into the insertion portion 64a, the rear member 5B is displaced toward the crown of the head on the inner circumferential surface 2P of the helmet body 2 so that the base portion 22a is inserted into the groove portion 64b. As a result, the rear engagement projection 22B engages with the engagement hole 64. In this way, the rear member 5B is detachably attached to the inner circumferential surface 2P of the helmet body 2 via the engagement piece 63.

[0030] As shown in Figure 6(a), a protruding portion 65 is formed on the lower side of the insertion portion 64a of the rear member 5B. When the rear member 5B is assembled to the rear engaging projection 22B, the protruding portion 65 is positioned above the tip portion 22b of the rear engaging projection 22B, as shown in Figure 1. This restricts the rear member 5B from being displaced downward relative to the rear engaging projection 22B, making it difficult for the rear member 5B to detach from the rear engaging projection 22B.

[0031] As described above, in the helmet 1 according to this embodiment, the impact absorbing member 5 can be directly attached to the helmet body 2 without the need for other members such as the hammock 3. This allows the impact absorbing member 5 to be attached to the helmet body 2 regardless of the attachment status of the hammock 3 or other members to the helmet body 2.

[0032] Furthermore, the impact-absorbing member 5 according to this embodiment is detachable from the inner circumferential surface 2P of the helmet body 2 by engaging / disengaging the engaging projection 22 and the engaging hole. By making the impact-absorbing member 5 detachable from the inner circumferential surface 2P of the helmet body 2 in this way, it becomes possible to easily clean and repair the impact-absorbing member 5.

[0033] Furthermore, the impact absorbing member 5 (front member 5F and rear member 5B) according to this embodiment is configured such that the engaging holes 54 and 64 formed in the engaging pieces 53 and 63 engage with the engaging projections 22 (front engaging projection 22F and rear engaging projection 22B). As a result, even when bulging portions 23F and 23B are formed on the inner circumferential surface 2P of the helmet body 2, as in the helmet 1 according to this embodiment, the engaging holes can be engaged with the engaging projections 22 adjacent to the bulging portions 23F and 23B, making it possible to attach the impact absorbing member 5. In other words, according to the helmet 1, even when it is not possible to form engaging projections 22 in locations where the impact absorbing member 5 is needed, such as the bulging portions 23F and 23B, the impact absorbing member 5 can be attached by engaging the engaging holes with the engaging projections 22 adjacent to the bulging portions 23F and 23B.

[0034] Furthermore, in the helmet 1 according to this embodiment, since each impact-absorbing member 5 is attached to the helmet shell 2 individually, it is easy to attach, detach, or replace each impact-absorbing member 5. In other words, if one impact-absorbing member 5 becomes dirty or damaged, only that impact-absorbing member 5 can be replaced, thus reducing the workload on the user.

[0035] Furthermore, in the helmet 1 according to this embodiment, the impact-absorbing member 5 is attached to the helmet shell 2, which is a component further away from the user's head than the hammock 3. Therefore, a ventilation space can be secured between the head and the inner surface 2P of the helmet shell 2. In other words, compared to a configuration in which the impact-absorbing member 5 is provided on the hammock 3, the impact-absorbing member 5 can be moved further away from the head, allowing air to circulate closer to the head and enhancing the user's sense of coolness.

[0036] Furthermore, as shown in Figure 2, the shock-absorbing member 5 is inserted between the connecting parts 31 while the hammock 3 is attached to the helmet body 2, making it detachable from the inner circumferential surface 2P. Therefore, even if the shock-absorbing member 5 becomes dirty or damaged and needs to be replaced, it is not necessary to remove the hammock 3, thus reducing the workload for the user.

[0037] In this embodiment, the impact-absorbing member 5 is configured to partially cover the inner circumferential surface 2P of the helmet body 2 in terms of breathability and cost. It is desirable to provide multiple impact-absorbing members 5 (four in this embodiment) in a planar manner on the inner circumferential surface 2P of the helmet body 2, as in this embodiment. In this case, it is desirable to form the inner surface of the impact-absorbing member 5 with an area in the range of 30 square cm to 50 square cm in order to compensate for the gaps between the impact-absorbing hammocks 3.

[0038] In helmet 1, if the user receives an impact from above while wearing the helmet, an upward frictional force is applied to the impact absorbing member 5 from the user's head. Therefore, in this embodiment, the impact absorbing member 5 is displaced toward the top of the head (upward) on the inner circumferential surface 2P of the helmet shell 2, so that the engaging projection 22 engages with the engaging hole. This makes it difficult for the impact absorbing member 5 to come off due to the frictional force it receives when the user of helmet 1 receives an impact from above.

[0039] As shown in Figures 5 and 6, multiple holes are opened in the base surface of the shock-absorbing member 5. The protruding surface is formed in an arch shape that spans each hole horizontally. In addition to the arch shape in this embodiment, the shock-absorbing member 5 can also be dome-shaped, honeycomb-shaped, or plate-shaped to achieve high energy absorption efficiency. The shock-absorbing member 5 may also be shaped like a spring member that absorbs shock by bending. Furthermore, the shock-absorbing member 5 may be formed from a soft material such as elastomer or rubber to achieve shock absorption. In addition, the shock-absorbing member 5 may be formed with a mixture of shapes where the directions in which the holes in the arch span are different.

[0040] Other shapes can be used for the engaging piece formed on the impact-absorbing member 5, such as a prism shape, prism shape, triangular prism shape, cylindrical shape, arc shape, convex shape, or square pyramidal shape. A prism shape extended in the sliding direction is most suitable in that it allows the impact-absorbing member to be installed without interfering with the space for installing accessories inside the front of the helmet. When the engaging piece is prism-shaped, it is preferable to set the outer diameter to 12 mm to 40 mm because the engaging piece is less likely to break. [Explanation of Symbols]

[0041] 1. Helmet 2. Helmet shell 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 Ring section 31 Linkage section 31a Linking hole 32 Band support part 51 Base part 51a Inner surface 52 Projection surface portion 53 Engagement piece 54 Engagement hole 54a Insertion part 54b Groove section 55 Raised section 61 Base part 61a Inner surface 62 Projection surface portion 63 Engagement piece 64 Engagement hole 64a Insertion part 64b Groove 65 Convex portion

Claims

1. It comprises a helmet shell and a hammock attached to the inside of the helmet shell, An engaging projection is formed on the inner circumferential surface of the helmet body. Between the inner circumferential surface of the helmet body and the hammock, an impact-absorbing member is provided that partially covers the inner circumferential surface. The impact-absorbing member is integrally formed by a base surface and a plurality of protruding surfaces projecting from the base surface. The impact-absorbing member has an extended portion that extends in a direction intersecting the direction in which the protruding surface portion protrudes, and an engaging piece is formed which at least one side end face is continuous with the side end face of the base surface portion. In the extended portion of the engaging piece, an engaging hole is formed at a position different from the protruding end face of the protruding surface portion in the thickness direction of the impact absorbing member, which engages with the engaging projection. When the engaging projection and the engaged hole engage, the protruding end face of the projection surface comes into contact with a location on the inner circumferential surface different from the engaging projection, at a position different from the engaging projection in the thickness direction of the impact absorbing member. On the front and rear sides of the inner circumferential surface of the helmet body, bulges are formed that protrude toward the inside of the helmet body. The aforementioned engaging projection is formed adjacent to the bulging portion, The shock-absorbing member is provided on the inside of the bulging portion, A helmet in which a front recess and a rear recess are formed on the outer side of the bulge in the outer shell of the helmet body, to which an attachment can be assembled.

2. The helmet according to claim 1, wherein the projection surface of the impact absorbing member comprises a first projection surface that abuts against the bulge, and a second projection surface that has a greater projection height than the first projection surface and abuts against the periphery of the bulge.

3. The helmet according to claim 1, wherein in the extended portion, a gripping portion with an anti-slip projection is formed on the tip side in the extension direction from the engagement hole.

4. The helmet according to claim 3, wherein when the engagement hole of the shock-absorbing member is engaged with the engagement projection, the gripping portion comes into contact with the inner circumferential surface of the helmet body, and the anti-slip projection is formed on the side surface of the hammock.

5. Multiple holes are opened in the base portion. The helmet according to any one of claims 1 to 4, wherein the protruding surface portion is formed on an arch portion that spans each of the holes.

6. The helmet according to claim 5, wherein the impact-absorbing member is formed such that the arch portion spans the hole in different directions.

7. The helmet according to any one of claims 1 to 4, wherein the impact-absorbing member is provided at least one location on the inner circumferential surface of the helmet body, on the forehead, the back of the head, and both sides of the head.

8. The helmet according to any one of claims 1 to 4, wherein the engaging piece in the impact-absorbing member is integrally formed with the base surface or the protruding surface.

9. The helmet according to any one of claims 1 to 4, wherein the protruding surface of the impact-absorbing member is provided in contact with the inner circumferential surface of the helmet body.

10. The helmet according to any one of claims 1 to 4, wherein the impact-absorbing member is detachably attached to the inner circumferential surface of the helmet body via the engaging piece.

11. The hammock is equipped with multiple connecting parts that extend radially, The helmet according to claim 10, wherein the impact-absorbing member is detachably attached to the inner circumferential surface by being inserted between the connecting parts when the hammock is attached to the helmet body.

12. The helmet according to any one of claims 1 to 4, wherein the impact absorbing member is displaced toward the crown of the head on the inner circumferential surface of the helmet body, thereby the engaging projection engages with the engaging hole.

13. The engaging projection comprises a base end that protrudes in a plate-like manner vertically from the inner circumferential surface of the helmet body, and a tip portion formed at the inner end of the base end. The engagement hole comprises an insertion portion formed to be substantially the same shape as the tip portion, and a groove portion extending downward from the insertion portion. The helmet according to claim 12, wherein, with the tip portion inserted into the insertion portion, the impact absorbing member is displaced toward the crown portion on the inner circumferential surface of the helmet body so as to insert the base portion into the groove, thereby engaging the engaging projection with the engaging hole.

14. The helmet according to claim 13, wherein a protruding ridge is formed on the lower side of the insertion portion of the impact-absorbing member.

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