helmet

Abstract

To provide a helmet with good ventilation inside the helmet and a protective sheet to be installed on the helmet. [Solution] The helmet 10 comprises a shell 11. The shell 11 includes an annular member 12 into which the wearer's head is inserted, and one or more movable members 13, 14 that are movable relative to the annular member 12. The shell 11 is provided with sliding mechanisms 20A, 20B, 20C inside the shell 11 that cause strip-shaped bodies 21A, 21B, 21C, whose ends are fixed to the annular member 12 and which support the movable members 13, 14, to slide relative to the second movable member 14 in the front-rear direction of the shell 11. As the strip-shaped bodies 21A, 21B, 21C slide in the front-rear direction of the shell 11 by the sliding mechanisms 20A, 20B, 20C, the movable members 13, 14 move relative to the annular member 12.

Description

Technical Field

[0001] The present invention relates to Regarding helmets the following.

Background Art

[0002] Conventionally, there has been a helmet that can be downsized by folding the cap body when not in use (see, for example, Patent Document 1).

[0003] On the other hand, for helmets such as those for bicycles, an impact absorber for mitigating the impact on the wearer's head is attached to the inner surface of the cap body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the above conventional helmets have a problem that it is difficult to make both the structure for folding the cap body and the structure for absorbing an impact from the outside of the cap body compatible. Further, the above conventional helmets have a problem that the air flow inside the cap body is poor and the inside of the cap body is likely to get stuffy.

[0006] An object of the present invention is to provide a helmet in which a structure for folding the cap body and a structure for absorbing an impact from the outside of the cap body are compatible, and in which the air flow inside the cap body is good, and a protective sheet provided for the helmet.

Means for Solving the Problems

[0007] The problems to be solved by the present invention are as described above. Next, means for solving these problems will be described.

[0008] It should be noted that there seems to be a small error in the original text where "Japanese Patent Application Laid-Open No. 2017-89049" was split into two lines in the translation for better readability. The original text "特開2017-89049号公報" was translated as "特開2017-89049号公報" in the previous translation, but it was corrected to "Japanese Patent Application Laid-Open No. 2017-89049" in this improved version for a more accurate and consistent translation.In other words, the helmet of the present invention comprises a shell, and the shell has an annular part into which the wearer's head is inserted. It comprises a material and one or more movable members that are movable relative to an annular member, the end being an annular part A strip-shaped body fixed to the material and supporting the movable member is slid relative to the movable member in the front-to-back direction of the helmet body. The helmet shell is equipped with one or more sliding mechanisms, and the strip-shaped body is moved in the front and rear directions by the sliding mechanism. By sliding in that direction, the movable member moves relative to the annular member. This helmet features a movable shock absorber inside the helmet shell that mitigates impacts to the wearer's head, and a frame that holds a sliding mechanism, with the frame formed within the shock absorber.

[0009] This configuration provides a structure for folding the helmet shell and a structure for absorbing impacts from the outside of the helmet shell. It is possible to achieve both construction and functionality, and also improve airflow inside the helmet. ru. Furthermore, this configuration allows a single frame to support both the sliding mechanism and the shock absorber.

[0010] Furthermore, the helmet of the present invention may be a helmet comprising: a first sliding mechanism that slides a first strip-shaped body, whose end is fixed to an annular member on the front side of the helmet body, against a movable member in the front-rear direction of the helmet body; a second sliding mechanism that slides a second strip-shaped body, which is arranged parallel to the first strip-shaped body and whose end is fixed to an annular member on the front side of the helmet body, against a movable member in the front-rear direction of the helmet body; and a third sliding mechanism that slides a third strip-shaped body, which is arranged between the first and second strip-shaped bodies and parallel to the first and second strip-shaped bodies and whose end is fixed to an annular member on the rear side of the helmet body, against a movable member in the front-rear direction of the helmet body.

[0011] This configuration makes it possible to achieve both a structure for folding the helmet shell and a structure for absorbing external impacts, and also allows the movable member to move efficiently relative to the annular member.

[0014] Furthermore, the helmet of the present invention may be a helmet in which the impact absorber and the frame are molded together as one unit.

[0015] With such a configuration, it is possible to hold both the sliding mechanism and the shock absorber with a single framework.

[0016] Further, the helmet of the present invention may be a helmet having ventilation holes for ventilating outside air inside the helmet on the front side of the helmet body.

[0017] With such a configuration, outside air can be efficiently taken into the helmet body from the front side of the helmet body.

[0018] Further, the helmet of the present invention may be a helmet provided with a headband for supporting the wearer's head, wherein the attachment portion of the headband to the helmet body is inside the helmet body and is provided avoiding the position where the movable member moves with respect to the annular member.

[0019] With such a configuration, it is possible to prevent the headband from interfering with the movement of the movable member.

[0020] Further, the helmet of the present invention may be a helmet in which the attachment portion of the headband is at a position between the movable member and the annular member in a state where the movable member is adjacent to the annular member, and is provided at a position away from the position where the movable member moves with respect to the annular member.

[0021] With such a configuration, it is possible to prevent the headband from interfering with the movement of the movable member.

[0022] Further, the helmet of the present invention may be a helmet provided with a protective sheet that is detachably provided on the movable member and protects the sliding mechanism.

[0023] With such a configuration, it is possible to prevent the wearer's hair from being caught in the sliding mechanism.

Advantages of the Invention

[0026] According to the present invention, it is possible to achieve both a structure for folding the helmet body and a structure for absorbing an impact from the outside of the helmet body, improve the ventilation of the wind inside the helmet body, and suppress the stuffiness inside the helmet body.

Brief Description of the Drawings

[0027] [Figure 1] Perspective view showing the deployed state of the helmet 10 in the embodiment [Figure 2] Perspective view showing the folded state of the helmet 10 [Figure 3] Bottom view showing the deployed state of the helmet 10 [Figure 4] Bottom view showing the folded state of the helmet 10 [Figure 5] Cross-sectional view taken along line A - A of FIG. 3 [Figure 6] Cross-sectional view taken along line B - B of FIG. 4 [Figure 7] Perspective view showing the third belt-like body 21C and the holding member 22 of the helmet 10, (a) is a perspective view of the third belt-like body 21C and the holding member 22, (b) is a perspective view of the third belt-like body 21C and the holding member 22 in the deployed state of the helmet 10, (c) is a perspective view of the third belt-like body 21C and the holding member 22 in the folded state of the helmet 10 [Figure 8] Perspective view showing the framework 18 provided inside the second movable member 14 of the helmet 10 [Figure 9] Bottom view of the helmet 10 when the protective sheet 40 is provided on the helmet 10

Embodiments for Carrying out the Invention

[0028] Hereinafter, the helmet 10 and the protective sheet 40 of the embodiment of the present invention will be described with reference to the drawings. Note that the helmet 10 and the protective sheet 40 are not limited to the helmets and protective sheets described below.

[0029] As shown in Figures 1 and 2, the helmet 10 is a foldable helmet that is worn on the head of a wearer (not shown). The helmet 10 changes between the unfolded state shown in Figure 1 and the folded state shown in Figure 2 by expanding and contracting in the height direction of the helmet 10, for example, by force applied by the wearer. Here, the unfolded state of the helmet 10 is the state in which the height dimension of the helmet 10 is at its maximum, and the entire helmet 10 is extended. The folded state of the helmet 10 is the state in which the height dimension of the helmet 10 is at its minimum, and the entire helmet 10 is contracted. When the helmet 10 is in the unfolded state, the wearer can put on the helmet 10. Also, when the helmet 10 is in the folded state, the wearer can store the helmet 10.

[0030] In the following explanation, the height of the helmet 10 will be described as the up and down direction of the helmet 10. Furthermore, when the wearer puts on the helmet 10, the side that becomes the wearer's face will be described as the front of the helmet 10, the side that becomes the back of the wearer's head will be described as the back of the helmet 10, the side that becomes the right side of the wearer's head will be described as the right side of the helmet 10, and the side that becomes the left side of the wearer's head will be described as the left side of the helmet 10.

[0031] The helmet 10 comprises a shell 11 that covers the wearer's head. The shell 11 is approximately hemispherical when deployed. The shell 11 includes an annular member 12, a first movable member 13, and a second movable member 14.

[0032] The annular member 12 is a member into which the wearer's head is inserted. The annular member 12 is a ring-shaped member. An insertion opening 12a is formed on the lower surface of the annular member 12. The insertion opening 12a is the part into which the wearer's head is inserted.

[0033] The first movable member 13 and the second movable member 14 are movable members that move relative to the annular member 12. The first movable member 13 and the second movable member 14 move vertically relative to the annular member 12.

[0034] As shown in Figure 5, the annular member 12, the first movable member 13, and the second movable member 14 are mainly composed of the main body members 12b, 13b, and 14b, and the shock absorber 17.

[0035] The main body members 12b, 13b, and 14b are members that constitute the surface portions of the annular member 12, the first movable member 13, and the second movable member 14. That is, the main body members 12b, 13b, and 14b constitute the surface portions of the helmet shell 11. The main body members 12b, 13b, and 14b are formed to cover the periphery of the impact absorber 17. The main body members 12b, 13b, and 14b are members formed of hard resin. The main body members 12b, 13b, and 14b may be formed of synthetic resins such as polycarbonate (PC) resin, ABS resin, or polypropylene (PP) resin.

[0036] The impact absorber 17 mitigates the impact on the head of a wearer (not shown) wearing the helmet 10. The impact absorber 17 is an impact-absorbing member that absorbs external impacts to the annular member 12, the first movable member 13, and the second movable member 14. The impact absorber 17 is made of, for example, expanded polystyrene (EPS), but its material is not limited.

[0037] As described above, the annular member 12, the first movable member 13, and the second movable member 14 are double-layered members, with a hard resin surface and a shock-absorbing material inside. Therefore, the annular member 12, the first movable member 13, and the second movable member 14 ensure shock absorption in the helmet 10 through the internal shock absorber 17, while the main body members 12b, 13b, and 14b on the surface enable the folding structure of the helmet 10.

[0038] As shown in Figure 1, in the folded state of the helmet 10, the first movable member 13 and the second movable member 14 move upward relative to the annular member 12, causing the entire helmet 10 to extend and unfold. That is, the first movable member 13 and the second movable member 14 are positioned away from the annular member 12. Here, "upward" refers to the direction in which the first movable member 13 and the second movable member 14 move away from the annular member 12 when the first movable member 13 and the second movable member 14 are operated.

[0039] On the other hand, as shown in Figure 2, in the unfolded state of the helmet 10, the first movable member 13 and the second movable member 14 move downward with respect to the annular member 12, causing the entire helmet 10 to contract and fold. That is, the first movable member 13 and the second movable member 14 are positioned adjacent to the annular member 12. Here, "downward" refers to the direction in which the first movable member 13 and the second movable member 14 move closer to the annular member 12 when they are operated.

[0040] In this embodiment, the number of movable members is set to two, the first movable member 13 and the second movable member 14. However, as long as the helmet shell 11 includes one or more movable members, it is also possible to have one movable member or three or more movable members.

[0041] The first movable member 13 is a movable member that forms the middle section of the helmet shell 11 when the helmet 10 is in its deployed state. The first movable member 13 is positioned between the annular member 12 and the second movable member 14. The first movable member 13 is an annular-shaped member with a smaller outer diameter than the annular member 12 and a larger inner diameter than the second movable member 14. The first movable member 13 is connected to the annular member 12 and the second movable member 14 by a connecting mechanism 30 (see Figure 3), which will be described later.

[0042] The second movable member 14 is a movable member that forms the top of the helmet shell 11 when the helmet 10 is in its deployed state. The second movable member 14 is arranged in continuity with the first movable member 13. The second movable member 14 is a bowl-shaped member with a smaller outer diameter than the annular member 12 and the first movable member 13. The second movable member 14 is connected to the first movable member 13 by a connecting mechanism 30 (see Figure 3).

[0043] As shown in Figures 3 and 4, the annular member 12 and the movable members 13 and 14 are connected to each other by a connecting mechanism 30. For example, two connecting mechanisms 30 are provided on the front and rear sides of the helmet body 11.

[0044] In this embodiment, the annular member 12 and the movable members 13 and 14 are connected by four connecting mechanisms 30, but the number of connecting mechanisms 30 is not limited to this.

[0045] The connecting mechanism 30 includes connecting members 31 and 32, and latching parts 33 and 34.

[0046] The first connecting member 31 is a member that connects the annular member 12 and the first movable member 13. The first connecting member 31 is formed, for example, from a strip-shaped member. The first connecting member 31 protrudes downward from the lower end of the first movable member 13. One end of the first connecting member 31 is bent in a roughly J-shape, for example. The other end of the first connecting member 31 is fixed to the first movable member 13. One end of the first connecting member 31 only needs to be shaped in a way that allows it to be hooked into the groove-shaped first hook portion 33.

[0047] The second connecting member 32 is a member that connects the first movable member 13 and the second movable member 14. The second connecting member 32 is formed from a strip-shaped member. The second connecting member 32 protrudes downward from the lower end of the second movable member 13. One end of the second connecting member 32 is bent in a roughly J-shape, for example. The other end of the second connecting member 32 is fixed to the first movable member 13. One end of the second connecting member 32 only needs to be shaped in such a way that it can be hooked into the groove-shaped second hook portion 34.

[0048] The first locking portion 33 is, for example, a groove that is roughly concave or roughly L-shaped. The first locking portion 33 is formed on the upper inner side of the annular member 12. The first locking portion 33 is the part that one end of the first connecting member 31 catches on when the first movable member 13 moves upward relative to the annular member 12. The first locking portion 33 catches on the edge of the groove where one end of the first connecting member 31 catches. The first locking portion 33 only needs to have a shape that allows one end of the first connecting member 31 to catch on it.

[0049] The second locking portion 34 is, for example, a groove that is roughly concave or roughly L-shaped. The second locking portion 34 is formed on the inner upper part of the first movable member 13. The second locking portion 34 is the part that one end of the second connecting member 32 catches on when the second movable member 14 moves upward relative to the annular member 12. The second locking portion 34 catches on the edge of the groove where one end of the second connecting member 32 catches. The second locking portion 34 only needs to have a shape that allows one end of the second connecting member 32 to catch on it.

[0050] As shown in Figures 1 and 3, when the helmet 10 is deployed, the first movable member 13 moves upward relative to the annular member 12, causing the first connecting member 31 of the four connecting mechanisms 30 to slide upward inside the annular member 12. Then, one end of the first connecting member 31 of the four connecting mechanisms 30 catches on the first latch 33. This fixes the first movable member 13 to the annular member 12. Furthermore, the second movable member 14 moves upward relative to the annular member 12, causing the second connecting member 32 of the four connecting mechanisms 30 to slide upward inside the first movable member 13. Then, one end of the second connecting member 32 of the four connecting mechanisms 30 catches on the second latch 34. This fixes the second movable member 14 to the first movable member 13.

[0051] As shown in Figures 2 and 4, when folding the helmet 10, the first movable member 13 moves downward relative to the annular member 12, releasing the engagement of one end of the first connecting member 31 of the four connecting mechanisms 30 with the first latch 33. Then, the first connecting members 31 of the four connecting mechanisms 30 slide downward inside the annular member 12. This causes the first movable member 13 to move away from the annular member 12. Furthermore, the second movable member 14 moves downward relative to the annular member 12, releasing the engagement of one end of the second connecting member 32 of the four connecting mechanisms 30 with the second latch 34. Then, the second connecting member 32 slides downward inside the first movable member 13. This causes the second movable member 14 to move away from the first movable member 13.

[0052] As shown in Figures 3 to 6, the movable members 13 and 14 are supported by the annular member 12 by the strip-shaped bodies 21A, 21B, and 21C.

[0053] The strip-shaped members 21A, 21B, and 21C are members for supporting the movable members 13 and 14 with respect to the annular member 12. When the helmet 10 is held in an unfolded state, the strip-shaped members 21A, 21B, and 21C support the movable members 13 and 14 with respect to the annular member 12. The first end T1 of the strip-shaped members 21A, 21B, and 21C is fixed to the annular member 12. The strip-shaped members 21A, 21B, and 21C are formed from long, strip-shaped members having a predetermined width. Here, the predetermined width is shorter than the width of the guide groove 24 of the sliding mechanism 20A, 20B, and 20C, which will be described later. The strip-shaped members 21A, 21B, and 21C slide along the guide groove 24. An elongated hole 21h is formed in the second end T2 (the end opposite to the first end T1) of the strip-shaped members 21A, 21B, and 21C.

[0054] As shown in Figures 3 and 5, the first strip-shaped body 21A is provided on the left front side of the helmet body 11, extending in the front-to-back direction of the helmet body 11. Specifically, the first strip-shaped body 21A is positioned on the left front side of the helmet body 11, parallel to the wearer's head, extending from the face side to the top of the head of a wearer (not shown) wearing the helmet 10. The first end T1 of the first strip-shaped body 21A is fixed to the front side of the annular member 12. Specifically, the first end T1 of the first strip-shaped body 21A is located on the left side of the front of the annular member 12 and is fixed to the lower inner part of the annular member 12.

[0055] The second strip-shaped body 21B is positioned parallel to the first strip-shaped body 21A and is provided on the right front side of the helmet body 11, extending in the front-rear direction of the helmet body 11. Specifically, the second strip-shaped body 21B is positioned on the right front side of the helmet body 11, parallel to the wearer's head, extending from the face side to the top of the head of a wearer (not shown) wearing the helmet 10. The first end T1 of the second strip-shaped body 21B is fixed to the front side of the annular member 12. Specifically, the first end T1 of the second strip-shaped body 21B is on the right side of the front of the annular member 12 and is fixed to the lower inner part of the annular member 12.

[0056] The third strip-shaped body 21C is positioned parallel to the first strip-shaped body 21A and the second strip-shaped body 21B between the first strip-shaped body 21A and the second strip-shaped body 21B, and is provided towards the rear center of the helmet body 11, extending in the front-rear direction of the helmet body 11. Specifically, the third strip-shaped body 21C is positioned towards the rear center of the helmet body 11, parallel to the wearer's head, extending from the back of the wearer's head towards the top of the wearer's head when the helmet 10 is worn. The first end T1 of the third strip-shaped body 21C is fixed to the rear side of the annular member 12. Specifically, the first end T1 of the third strip-shaped body 21C is fixed to the lower inner part of the annular member 12, in the central rear portion of the annular member 12.

[0057] As shown in Figure 7, the first end T1 of the third strip-shaped body 21C is, for example, shaped like a roughly Y-shape with two branches. As described above, when the helmet 10 is held in an unfolded state, the strip-shaped bodies 21A, 21B, and 21C support the movable members 13 and 14 against the annular member 12. Here, on the front side of the annular member 12, the movable members 13 and 14 are supported by the two strip-shaped bodies, the first strip-shaped body 21A and the second strip-shaped body 21B, but on the rear side of the annular member 12, the movable members 13 and 14 are supported by only one strip-shaped body, the third strip-shaped body 21C. Therefore, in order to strengthen the support of the movable members 13 and 14 by the third strip-shaped body 21C, the first end T1 of the third strip-shaped body 21C is shaped like a two-branch, and each branched part is fixed to the annular member 12, thereby increasing the support strength of the movable members 13 and 14 by the third strip-shaped body 21C.

[0058] It is not mandatory for the first end T1 of the third strip-shaped body 21C to be bifurcated; the first end T1 of the third strip-shaped body 21C may be formed in the same non-bifurcated shape as the first strip-shaped body 21A and the second strip-shaped body 21B. Conversely, the first end T1 of the first strip-shaped body 21A and the second strip-shaped body 21B may be formed in the same bifurcated shape as the third strip-shaped body 21C.

[0059] As shown in Figures 3 to 6, the helmet shell 11 is equipped with a first sliding mechanism 20A, a second sliding mechanism 20B, and a third sliding mechanism 20C inside.

[0060] The sliding mechanisms 20A, 20B, and 20C are mechanisms for sliding the strip-shaped bodies 21A, 21B, and 21C. The sliding mechanisms 20A, 20B, and 20C slide the strip-shaped bodies 21A, 21B, and 21C, whose first end T1 is fixed to the annular member 12. The sliding mechanisms 20A, 20B, and 20C slide the strip-shaped bodies 21A, 21B, and 21C in the front-rear direction of the helmet body 11 relative to the movable members 13 and 14.

[0061] The sliding mechanisms 20A, 20B, and 20C hold the strip-shaped bodies 21A, 21B, and 21C in predetermined positions. The predetermined positions are those in which the strip-shaped bodies 21A, 21B, and 21C can support the movable members 13 and 14 with respect to the annular member 12.

[0062] As shown in Figures 3 to 6, the sliding mechanisms 20A, 20B, and 20C cause the strip-shaped bodies 21A, 21B, and 21C to slide in the front-rear direction on the movable members 13 and 14, thereby changing the helmet 10 between an unfolded state and a folded state.

[0063] As shown in Figures 3 and 5, when the helmet 10 is deployed, the sliding mechanisms 20A, 20B, and 20C hold the strip-shaped bodies 21A, 21B, and 21C in predetermined positions, thereby holding the helmet 10 in the deployed state.

[0064] The sliding mechanisms 20A, 20B, and 20C include a retaining member 22 and a guide groove 24.

[0065] As shown in Figures 3 to 7, the retaining member 22 is a member for holding the strip-shaped bodies 21A, 21B, and 21C in predetermined positions. The predetermined positions are those in which the strip-shaped bodies 21A, 21B, and 21C can support the movable members 13 and 14 with respect to the annular member 12. The retaining member 22 of the first sliding mechanism 20A is positioned along the guide groove 24 of the first sliding mechanism 20A. The retaining member 22 of the second sliding mechanism 20B is positioned along the guide groove 24 of the second sliding mechanism 20B. The retaining member 22 of the third sliding mechanism 20C is positioned along the guide groove 24 of the third sliding mechanism 20C. As shown in Figures 3, 4, and 7, the retaining member 22 has a main body portion 22a, a claw portion 22b, and an operating portion 22c.

[0066] The main body portion 22a is the main body of the holding member 22. An insertion hole 22h is formed inside the main body portion 22a. The strip-shaped bodies 21A, 21B, and 21C are inserted through the insertion hole 22h.

[0067] The claw portion 22b is the part that hooks onto the second end T2 of the strip-shaped bodies 21A, 21B, and 21C. The claw portion 22b is formed integrally with the main body portion 22a. In an elastically deformed state, the claw portion 22b hooks onto the inner circumferential end of the elongated hole 21h of the strip-shaped bodies 21A, 21B, and 21C. The claw portion 22b holds the strip-shaped bodies 21A, 21B, and 21C by hooking onto the elongated hole 21h of the strip-shaped bodies 21A, 21B, and 21C.

[0068] The operating part 22c is the part that operates the claw part 22b. The operating part 22c is formed integrally with the main body part 22a. The operating part 22c is pushed by force applied by a wearer (not shown), which moves the main body part 22a. As a result, the claw part 22b, which is formed integrally with the main body part 22a, moves together with the main body part 22a. If the claw part 22b is caught in the elongated hole 21h of the band-shaped bodies 21A, 21B, and 21C, the operating part 22c is pushed, causing the claw part 22b to move and releasing the claw part 22b from the elongated hole 21h of the band-shaped bodies 21A, 21B, and 21C.

[0069] As shown in Figure 8, the main body 22a of the retaining member 22 is fixed to the frame 18. The frame 18 is formed, for example, by combining a plurality of elongated members. The frame 18 is formed in a curved shape so as to cover the top of the head of a wearer (not shown) wearing the helmet 10. The frame 18 is positioned inside the second movable member 14. The frame 18 is fixed to four connecting mechanisms 30 (only two connecting mechanisms 30 are shown in Figure 8). The frame 18 is positioned inside the second movable member 14 by the four connecting mechanisms 30. On the other hand, the frame 18 positions the retaining member 22 in the second movable member 14 by holding the retaining member 22. That is, the frame 18 positions the strip-shaped bodies 21A, 21B, and 21C that are held by the retaining member 22.

[0070] As shown in Figures 3 to 6, the guide groove 24 is a groove for guiding the strip-shaped bodies 21A, 21B, and 21C in the front-rear direction of the helmet shell 11. The guide groove 24 is formed in a substantially concave shape in the second movable member 14. The width of the guide groove 24 is slightly larger than the width of the strip-shaped bodies 21A, 21B, and 21C.

[0071] The guide groove 24 of the first sliding mechanism 20A is provided on the left front side of the second movable member 14, extending in the front-rear direction of the helmet shell 11. Specifically, when a wearer (not shown) puts on the helmet 10, the guide groove 24 of the first sliding mechanism 20A is positioned on the left front side of the helmet shell 11 so as to be parallel to the wearer's head, running from the face side to the top of the head along the wearer's head.

[0072] The guide groove 24 of the second sliding mechanism 20B is formed to be parallel to the guide groove 24 of the first sliding mechanism 20A, and is provided on the right front side of the second movable member 14, extending in the front-rear direction of the helmet body 11. Specifically, when a wearer (not shown) puts on the helmet 10, the guide groove 24 of the second sliding mechanism 20B is positioned on the right front side of the helmet body 11 so as to be parallel to the wearer's head, running from the face side to the top of the head along the wearer's head.

[0073] The guide groove 24 of the third sliding mechanism 20C is positioned parallel to the guide grooves 24 of the first sliding mechanism 20A and the second sliding mechanism 20B, between the guide groove 24 of the first sliding mechanism 20A and the guide groove 24 of the second sliding mechanism 20B, and is located towards the rear of the center of the helmet body 11, extending in the front-rear direction of the helmet body 11. Specifically, when a wearer (not shown) puts on the helmet 10, the guide groove 24 of the third sliding mechanism 20C is positioned towards the rear of the center of the helmet body 11 so as to be parallel to the wearer's head, extending from the back of the head towards the top of the head, along the wearer's head.

[0074] As described above, in the helmet 10, the strip-shaped members 21A, 21B, and 21C, whose first end T1 is fixed to the annular member 12, support the movable members 13 and 14 relative to the annular member 12. Therefore, when the helmet 10 is deployed, the shock-absorbing movable members 13 and 14 are held in a deployed state relative to the annular member 12. In other words, the helmet 10 can achieve both a structure that allows the helmet shell 11 to be folded and a structure that absorbs external impacts to the helmet shell 11 by having the strip-shaped members 21A, 21B, and 21C support the movable members 13 and 14.

[0075] Furthermore, in the helmet 10, the guide grooves 24 of the strip-shaped bodies 21A, 21B, 21C and the sliding mechanisms 20A, 20B, 20C extend in the front-to-back direction of the helmet shell 11. By providing the guide grooves 24 of the strip-shaped bodies 21A, 21B, 21C and the sliding mechanisms 20A, 20B, 20C in the front-to-back direction of the helmet shell 11, a passage for air to pass through in the front-to-back direction of the helmet shell 11 is formed. For this reason, the helmet 10 is shaped in a way that allows outside air taken into the inside of the helmet shell 11 to flow easily in the front-to-back direction of the helmet shell 11.

[0076] In particular, when the helmet 10 is used as a bicycle helmet, outside air is drawn into the helmet shell 11 from the front as the bicycle is moving. The outside air drawn into the helmet shell 11 then flows from the front to the rear of the helmet shell 11 along the guide grooves 24 of the strip-shaped bodies 21A, 21B, 21C and the sliding mechanisms 20A, 20B, 20C. As a result, airflow inside the helmet shell 11 is good, and stuffiness inside the helmet shell 11 is suppressed.

[0077] Furthermore, as shown in Figure 1, the helmet 10 has ventilation holes 15 on the front side of the helmet shell 11 for venting outside air into the helmet shell 11. Specifically, when the helmet 10 is in an unfolded state, the ventilation holes 15 are formed between the upper end of the annular member 12 and the lower end of the first movable member 13 on the front side of the helmet shell 11. The ventilation holes 15 are formed by the notched portion formed at the front lower end of the first movable member 13 and the front upper end of the annular member 12. By providing ventilation holes 15 on the front side of the helmet shell 11, outside air can be efficiently taken in from the front of the helmet shell 11 into the helmet shell 11. In particular, when the helmet 10 is used as a bicycle helmet, the ventilation holes 15 can easily take in the wind that hits the front of the helmet shell 11 when riding a bicycle into the helmet shell 11. As mentioned above, the inside of the helmet shell 11 has a structure that allows for good airflow, so the outside air taken in through the ventilation holes 15 flows efficiently from the front to the back of the helmet shell 11.

[0078] In this embodiment, two ventilation holes 15 are provided on the front side of the helmet body 11, but the invention is not limited to this. For example, there may be one elongated ventilation hole 15, or there may be three or more ventilation holes 15.

[0079] As shown in Figures 3 to 5, the helmet 10 includes a headband 16 that supports the head of a wearer (not shown). The headband 16 is formed from a strip-shaped member. When a wearer (not shown) puts on the helmet 10, the headband 16 is positioned to follow the wearer's right side of the head, through the back of the head, and down to the left side of the head. The headband 16 has a length adjustment section 16a at a position that rests against the back of the wearer's head. The length adjustment section 16a is the part that adjusts the circumference of the headband 16. By operating the length adjustment section 16a, the wearer can adjust the circumference of the headband 16 to match the circumference of their head. Both ends of the headband 16 are rotatably fixed to the first movable member 13.

[0080] The headband 16 is provided with attachment portions 16b at both ends for attaching the headband 16 to the helmet body 11. The attachment portions 16b at both ends of the headband 16 are formed in a shape that is bent, for example, in a roughly L-shape.

[0081] The attachment portion 16b of the headband 16 to the helmet shell 11 is located inside the helmet shell 11, avoiding positions that overlap with the positions where the movable members 13 and 14 move relative to the annular member 12. Specifically, the attachment portion 16b of the headband is located between the second movable member 14 and the annular member 12 when the first movable member 13 and the second movable member 14 are adjacent to the annular member 12, i.e., in the folded state of the helmet 10, and is located away from the position where the second movable member 14 moves relative to the annular member 12. More specifically, the attachment portion 16b of the headband 16 is located on the front side of both the left and right sides of the first movable member 13, and is located on the lower inner side of the first movable member 13, away from the position where the second movable member 14 moves and the positions where the strip-shaped bodies 21A and 21B slide. Here, the position where the second movable member 14 moves is a position on the trajectory in which the second movable member 14 moves in the vertical direction of the helmet shell 11 relative to the annular member 12. The positions where the strip-shaped bodies 21A and 21B slide are positions on the trajectory in which the strip-shaped bodies 21A and 21B slide relative to the annular member 12 in the front-rear direction of the helmet body 11. The attachment portion 16b of the headband 16 is provided so as to avoid overlapping with the positions where the movable members 13 and 14 move relative to the annular member 12, thereby preventing the headband 16 from interfering with the operation of the movable members 13 and 14.

[0082] As shown in Figure 9, the helmet 10 is equipped with a protective sheet 40. The protective sheet 40 is a sheet for protecting the hair of a wearer (not shown) wearing the helmet 10 from the sliding mechanisms 20A, 20B, and 20C. The protective sheet 40 is detachably attached to the second movable member 14.

[0083] The protective sheet 40 is made of a material that has cushioning and breathability. The protective sheet 40 is a sheet large enough to cover the lower surface of the second movable member 14. The protective sheet 40 only needs to be large enough to cover at least the strip-shaped bodies 21A, 21B, 21C and the retaining members 22 of the sliding mechanisms 20A, 20B, 20C provided on the second movable member 14, and does not necessarily need to cover the entire lower surface of the second movable member 14. Because the protective sheet 40 is detachably attached to the second movable member 14, the sliding mechanisms 20A, 20B, 20C are hidden by the protective sheet 40. Therefore, it is possible to prevent the hair of a wearer (not shown) wearing the helmet 10 from getting caught in the strip-shaped bodies 21A, 21B, 21C and the retaining members 22.

[0084] The protective sheet 40 is provided with a position indicator section 41. The position indicator section 41 is the part that indicates the position of the operating section 22c of the holding member 22 of the sliding mechanism 20A, 20B, 20C. As described above, by providing the protective sheet 40 on the second movable member 14, the holding member 22 of the sliding mechanism 20A, 20B, 20C is hidden by the protective sheet 40. Therefore, a wearer (not shown) would not be able to identify the position of the operating section 22c of the holding member 22 due to the protective sheet 40, and would not be able to operate the operating section 22c. To address this, the protective sheet 40 provided on the second movable member 14 is positioned so that the operating section 22c of the holding member 22 of the sliding mechanism 20A, 20B, 20C is directly below it. This allows a wearer (not shown) to easily identify the position of the operating section 22c with the protective sheet 40 provided on the second movable member 14. The position indicator section 41 is formed, for example, in a circular shape. The position indicator 41 may also be formed by polygonal marks such as squares or stars, or by characters such as "Oshi".

[0085] As shown in Figure 8, the shock absorber 17 is molded integrally with the frame 18. Specifically, the shock absorber 17 and the frame 18 are molded integrally by setting the frame 18 in a mold (not shown) and performing foam molding. By being molded in this way, the frame 18 is formed inside the shock absorber 17 and holds the shock absorber 17. Furthermore, as described above, the frame 18 holds the holding members 22 of the sliding mechanisms 20A, 20B, and 20C. That is, the frame 18 holds the holding members 22 and also holds the shock absorber 17. Because the shock absorber 17 and the frame 18 are molded integrally, and the frame 18 is formed inside the shock absorber 17, one frame 18 can hold both the sliding mechanisms 20A, 20B, and 20C and the shock absorber 17.

[0086] The shock absorber 17 is molded integrally with the frame 18 such that the retaining member 22 and the strip-shaped bodies 21A, 21B, and 21C are exposed from the shock absorber 17. In other words, the shock absorber 17 is molded integrally with the frame 18 so as to avoid the retaining member 22 and the strip-shaped bodies 21A, 21B, and 21C. By integrally molding the shock absorber 17 and the frame 18 so as to avoid the retaining member 22 and the strip-shaped bodies 21A, 21B, and 21C, it is possible to prevent the strip-shaped bodies 21A, 21B, and 21C from sliding and coming into contact with the shock absorber 17.

[0087] Furthermore, if the frame 18 is formed inside the shock absorber 17, it is not necessary for them to be molded integrally in the same mold; for example, the shock absorber 17 may be directly bonded or pressed onto the frame 18 to form an integral structure.

[0088] Next, we will explain how to change the helmet 10 from a folded state to an unfolded state.

[0089] To change the helmet 10 from a folded state to an unfolded state, a force is applied upward from below the second movable member 14 to the helmet shell 11. For example, a wearer (not shown) puts on the helmet 10 and applies an upward force to the helmet shell 11. As a result, the first movable member 13 moves upward together with the second movable member 14 via the connecting mechanism 30. That is, the first movable member 13 and the second movable member 14 are lifted upward relative to the annular member 12.

[0090] At the same time, the first strip-shaped body 21A and the second strip-shaped body 21B slide along the guide groove 24 from the rear to the front of the helmet body 11. Furthermore, at the same time, the third strip-shaped body 21C slides along the guide groove 24 from the front to the rear of the helmet body 11.

[0091] As the strip-shaped bodies 21A, 21B, and 21C slide along the guide groove 24, the claw portion 22b of the holding member 22 of the sliding mechanism 20A, 20B, and 20C catches on the elongated hole 21h of the strip-shaped bodies 21A, 21B, and 21C. As a result, the second end T2 of the strip-shaped bodies 21A, 21B, and 21C is held by the holding member 22. With the second end T2 of the strip-shaped bodies 21A, 21B, and 21C held by the holding member 22, the strip-shaped bodies 21A, 21B, and 21C, whose first end T1 is fixed to the annular member 12, support the movable members 13 and 14 with respect to the annular member 12. As a result, the helmet 10 is held in the deployed state.

[0092] Next, we will explain how to change the helmet 10 from the unfolded state to the folded state.

[0093] To change the helmet 10 from an unfolded state to a folded state, for example, a wearer (not shown) pushes the operating part 22c of the retaining member 22 or the position indicator part 41 of the protective sheet 40 upwards on the helmet shell 11. This releases the engagement of the claw portion 22b of the retaining member 22 with the elongated holes 21h of the strip-shaped members 21A, 21B, and 21C. In other words, the strip-shaped members 21A, 21B, and 21C release the state in which they support the movable members 13 and 14 with respect to the annular member 12.

[0094] When the claw portion 22b of the retaining member 22 is released from its engagement with the elongated holes 21h of the strip-shaped bodies 21A, 21B, and 21C, the first strip-shaped body 21A and the second strip-shaped body 21B slide along the guide groove 24 from the front to the rear of the helmet body 11. At the same time, the third strip-shaped body 21C slides along the guide groove 24 from the rear to the front of the helmet body 11. Furthermore, at the same time, the first movable member 13 and the second movable member 14 move downward via the connecting mechanism 30. That is, the first movable member 13 and the second movable member 14 move downward relative to the annular member 12. As a result, the first movable member 13 and the second movable member 14 are housed inside the annular member 12, and the helmet 10 is held in a folded state.

[0095] As described above, in the helmet 10 of this embodiment, the annular member 12, the first movable member 13, and the second movable member 14 are made of a double-layered material consisting of a hard resin and a shock-absorbing material, and the strip-shaped bodies 21A, 21B, and 21C support the first movable member 13 and the second movable member 14 with respect to the annular member 12. Thus, the helmet 10 can achieve both a structure for folding the helmet shell 11 and a structure for absorbing impacts from the outside of the helmet shell 11.

[0096] Furthermore, in the helmet 10 of this embodiment, the guide grooves 24 of the strip-shaped bodies 21A, 21B, 21C and the sliding mechanisms 20A, 20B, 20C are provided in the front-to-back direction of the helmet body 11, which makes it easier for outside air taken into the inside of the helmet body 11 to flow in the front-to-back direction of the helmet body 11. As a result, airflow inside the helmet body 11 is improved, and stuffiness inside the helmet body 11 can be suppressed.

[0097] In this embodiment, the helmet 10 is equipped with three sliding mechanisms 20A, 20B, and 20C, but is not limited to this. As long as the helmet 11 is equipped with one or more sliding mechanisms that allow the sliding body to slide in the front-rear direction of the helmet body 11, it may be equipped with one sliding mechanism or four or more sliding mechanisms. In other words, it may be equipped with a mechanism that slides only one strip-shaped body or a mechanism that slides four or more strip-shaped bodies.

[0098] Furthermore, in the helmet 10 of this embodiment, two strip-shaped bodies 21A and 21B are fixed to the front side of the annular member 12, and one strip-shaped body 21C is fixed to the rear side of the annular member 12. However, the invention is not limited to this, and as long as the strip-shaped bodies are configured to slide in the front-rear direction of the helmet body 11, for example, one strip-shaped body may be fixed to the front side of the annular member 12, and two other strip-shaped bodies may be fixed to the rear side of the annular member 12. Alternatively, one or more strip-shaped bodies may be fixed to both the front and rear sides of the annular member 12. For example, two strip-shaped bodies may be fixed to the front side of the annular member 12, and two other strip-shaped bodies may be fixed to the rear side of the annular member 12. Moreover, one or more strip-shaped bodies may be fixed to either the front or rear side of the annular member 12. For example, one or more strip-shaped bodies may be fixed only to the front side of the annular member 12.

[0099] Furthermore, in the helmet 10 of this embodiment, the retaining members 22 of the sliding mechanisms 20A, 20B, and 20C are fixed to the frame 18, but this is not limited to this, and they may be fixed to the guide grooves 24 of the sliding mechanisms 20A, 20B, and 20C as long as they can hold the strip-shaped bodies 21A, 21B, and 21C.

[0100] Furthermore, although the ear straps and chin strap for preventing the helmet 10 from falling off the wearer's head are not shown in the illustration of this embodiment, the helmet 10 does have ear straps and a chin strap. The ear straps, which are not shown, are provided on both the left and right sides of the annular member 12. Both ends of the ear straps, which are not shown, are fixed to the inside of the annular member 12. The ear straps, which are not shown, are provided so as to hang down from the inside of the annular member 12. The chin strap, which is not shown, is provided so as to be stretched between the pair of upper ear straps on the left and right and hang down. The chin strap, which is not shown, is fixed to the pair of ear straps on the left and right. The helmet 10 is secured to the wearer's head by adjusting the length of the chin strap when the wearer's head is fitted into the helmet shell 11.

[0101] It goes without saying that the present invention is not limited to the embodiments described above, and various modifications are possible, all of which are also included within the scope of the present invention. [Industrial applicability]

[0102] As described above, the helmet according to the present invention has the effect of improving airflow inside the helmet and suppressing stuffiness inside the helmet, making it useful as a helmet and the like. [Explanation of Symbols]

[0103] 10 helmets 11 Helmet shell 12 Annular member 13. First movable member (movable member) 14. Second movable member (movable member) 15 Ventilation holes 16 Headbands 16b Headband attachment point 17 Shock absorber 18. Framework 20A First sliding mechanism (sliding mechanism) 20B Second sliding mechanism (sliding mechanism) 20C Third sliding mechanism (sliding mechanism) 21A First band (band) 21B Second zonal structure (zonal structure) 21C Third zonal structure (zonal structure) 22 Retaining member 24 guide grooves 30 Connection mechanism 40 protective sheets 41 Position display section

Claims

1. Equipped with a helmet shell, The aforementioned helmet body is An annular member into which the wearer's head is inserted, One or more movable members that are movable relative to the annular member, It includes, A strip-shaped body, whose end is fixed to the annular member and which supports the movable member, is positioned in the front and rear directions of the helmet body. The helmet body is provided with one or more sliding mechanisms that slide in the direction relative to the movable member, The strip-shaped body slides in the front-rear direction of the helmet body by the sliding mechanism, and the movable part The material is movable relative to the annular member, Inside the aforementioned helmet body, An impact absorber that mitigates the impact on the wearer's head, A frame that holds the aforementioned sliding mechanism, Equipped with, A helmet in which the aforementioned frame is formed within the impact absorber.

2. The aforementioned sliding mechanism is A first strip-shaped body, whose end is fixed to the annular member on the front side of the helmet body, is positioned on the front and rear sides of the helmet body. A first sliding mechanism that slides in the direction of the movable member, It is arranged parallel to the first strip-shaped body and its end is attached to the annular member on the front side of the helmet body. A second fixed strip-shaped body is slid relative to the movable member in the front-rear direction of the helmet body. The sliding mechanism and Between the first strip and the second strip A third band, which is positioned parallel to the first band and whose end is fixed to the annular member on the rear side of the helmet body. A third sliding mechanism that slides the body relative to the movable member in the front-rear direction of the helmet body, A helmet according to claim 1, comprising the following:

3. The helmet according to claim 1, wherein the shock absorber and the frame are integrally molded.

4. Claim 1, wherein the front side of the helmet body has ventilation holes for allowing outside air to circulate inside the helmet body. A helmet.

5. Equipped with a headband to support the wearer's head, The attachment portion of the headband to the helmet body is inside the helmet body, and the movable portion Claim 1, wherein the material is provided in a position that avoids overlapping with the position in which the material moves relative to the annular member. A helmet.

6. The mounting portion of the headband is located in front of the movable member when the movable member is adjacent to the annular member. The position between the movable member and the annular member, wherein the movable member is relative to the annular member. The helmet according to claim 5, which is provided at a position away from the movable position.

7. A claim comprising a protective sheet detachably provided on the movable member to protect the sliding mechanism. The helmet described in item 1.

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