helmet

Abstract

To provide a helmet that makes it possible to smoothly perform work of removing legs from a shell even when a coupling state of the shell and the legs is kept firm.SOLUTION: A helmet comprises a shell 1 for covering a human head and an interior body 2 provided between the shell 1 and the human head. The interior body 2 comprises a plurality of legs 5 extending downward from its head top part side. Each leg 5 comprises a coupling part 12, at its lower end, that is locked on a locking part 16 of the shell 1 to be coupled to the shell 1. Locking of the coupling part 12 on the locking part 16 is released by moving the coupling part downward from the shell 1. The legs 5 comprise a finger hooking part 13 capable of being hooked by a finger in moving the coupling part 12 downward from the shell 1.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a helmet. [Background technology]

[0002] The helmet is composed of a shell and an inner body. The inner body has a number of legs extending downward from the top of the head in order to be worn on a human head. The inner body is fixed to the shell by connecting the lower ends of the legs to the inner surface of the lower edge side of the shell (for example, see Patent Document 1).

[0003] A plurality of rivet-like portions are provided at predetermined intervals around the circumference of the shell on the inner surface of the lower edge of the shell. Each rivet-like portion has a rivet shaft protruding from the shell and a rivet head having a diameter enlarged into a disk shape at the top of the rivet shaft.

[0004] On the other hand, a hook hole for hooking onto the rivet-shaped part is formed at the lower end of the leg. The hook hole in the leg is a so-called potbelly hole in which a large diameter opening, through which the rivet head can be freely inserted, and a small diameter opening, which roughly corresponds to the outer diameter of the rivet shank, are adjacent to each other.

[0005] When connecting the leg to the shell, the head of the rivet-like part is passed through the large diameter opening of the hanging hole, then the hanging hole is slid along the inner surface of the shell toward the top of the shell, and the rivet shank is fitted into the small diameter opening. At this time, since the width dimension of the continuous part between the large diameter opening and the small diameter opening of the hanging hole is smaller than the diameter dimension of the rivet shank, the rivet shank fitted into the small diameter opening of the hanging hole does not move toward the large diameter opening, and the hanging state of the hanging hole on the rivet-like part is maintained.

[0006] When removing the legs from the shell for replacing the interior body, the locking hole is slid downward along the inner surface of the shell, in the opposite manner to when connecting the legs to the shell, and the rivet shaft is moved from the large diameter opening to the small diameter opening. This causes the rivet head to come out of the large diameter opening of the locking hole, and the legs to come out of the shell. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Utility Model Application Publication No. 50-040420 (Fig. 1, Fig. 2) Summary of the Invention [Problem to be solved by the invention]

[0008] However, since it is necessary to prevent the inner body from accidentally coming off the shell when the helmet is being worn, the state in which the fastening holes are fastened to the rivet portions is maintained firmly.

[0009] Therefore, when removing the legs from the shell, a large force is required to disengage the hook holes from the rivet portions, which makes it difficult to remove the legs smoothly.

[0010] In view of the above, an object of the present invention is to provide a helmet that allows the legs to be smoothly detached from the shell even when the connection between the shell and the legs is maintained firmly. [Means for solving the problem]

[0011] In order to achieve this object, the present invention provides a helmet comprising a shell body covering a human head, and an inner body provided between the shell body and the human head, the inner body having a plurality of legs extending downward from the top side thereof, each leg having a connecting part which is connected to the shell body by engaging with an engaging part of the shell body at its lower end, the connecting part being disengaged from the engaging part by moving the connecting part downwardly of the shell body, the legs having finger hook parts which can be hooked with fingers when the connecting part is moved downwardly of the shell body, the finger hook parts being tubular having a long axis and a short axis, and being erected from the legs so that the outer periphery on the short axis side coincides with both side edges along the extension direction of the legs, The finger hooks are arranged in parallel in a direction intersecting the direction in which the legs extend. It is characterized by the fact that

[0012] With the above configuration, when removing the legs from the shell, the user places a finger on the finger hook and moves the connecting part of the legs downward. This allows the force in the direction of removing the legs from the locking part of the shell to be efficiently concentrated on the connecting part. Therefore, even if the connection between the shell and the legs is firmly maintained, the operation of removing the legs from the shell can be performed smoothly.

[0013] In the present invention, the finger hook portion is formed in a shape that protrudes from the leg portion toward the inner surface of the shell.

[0014] This allows a gap to be formed between the shell and the leg for inserting fingers, and the fingers can be easily hooked on the finger loop portion, making it easier to remove the leg from the shell.

[0015] In the present invention, the finger hook portion is provided on an extension of a movement path of the connecting portion that moves when the connection to the locking portion is released.

[0016] This allows the force applied to the finger hook portion to be efficiently transmitted to the connecting portion, and even if the connecting portion is firmly engaged with the engaging portion, the connecting portion can be smoothly released from its engagement with the engaging portion.

[0017] In the present invention, it is preferable that an indicator be provided at a position corresponding to the finger hook portion, for visually guiding the moving direction of the connecting portion when disengaging with the connecting protrusion.

[0018] The guidance of the display not only makes it easy to confirm the direction of movement when removing the leg, but the position of the display also allows the worker to easily recognize the presence of the finger hook, making the removal of the leg from the shell even smoother. In the present invention, the finger hooks are arranged in a plurality of rows in a direction intersecting the extending direction of the leg portions in a plan view. 。 [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is an explanatory diagram of a helmet according to an embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 4 is an explanatory cross-sectional view of a connecting portion connected to a shell body. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, the helmet of this embodiment has a shell 1 formed in a dome shape from a hard material. A hammock 2 is provided inside the shell 1. The hammock 2 constitutes an inner body. In addition to the hammock 2, the inner body also has a headband 3 and a chin strap (not shown), etc.

[0021] The hammock 2 is formed by injection molding using synthetic resin (such as low-density polyethylene, etc.) as a material. As shown in Fig. 2, the hammock 2 includes a head ring 4, a plurality of legs 5 (four in this embodiment), a restricting portion 6 connected to the head ring 4, and a shock absorbing portion 7 provided between adjacent legs 5.

[0022] In addition, a headband connecting piece 8 for connecting the headband 3 is provided on one side edge (front edge) of the leg portion 5, and a chin strap connecting piece 9 for connecting a chin strap (not shown) is provided on the other side edge (rear edge) of the leg portion 5.

[0023] The parietal ring portion 4 is formed in a generally elliptical shape that is long in the front-rear direction. A protruding portion 10 is provided on the inside of the parietal ring portion 4. The protruding portion 10 expands the contact area of ​​the parietal ring portion 4 with the human head, improving the fit. In this embodiment, a hole 11 is formed along the shape of the protruding portion 10 to reduce weight.

[0024] Each leg portion 5 is formed in a belt shape, and its upper end is connected to the crown annular portion 4. A connecting portion 12 is provided at the lower end (tip) of each leg portion 5.

[0025] Each leg 5 is formed with a plurality of (two in this embodiment) protrusions 13, 14. In the leg 5, the protrusions 13, 14 are thick-walled portions, and the rest of the leg 5 except for the protrusions 13, 14 and the connecting portion 12 is thin-walled portion 15.

[0026] Thin portion 15 has high flexibility, while protruding portions 13 and 14 have low flexibility. Therefore, when leg portion 5 is curved to fit the human head, the curvature differs in parts as shown in Fig. 3, resulting in some parts that come into contact with the human head and some that do not (or some parts that make strong contact with the human head and some parts that make weak contact with the head).

[0027] When the legs 5 come into contact with the human head, narrower legs 5 can make the hammock 2 lighter than wider legs. On the other hand, when narrower legs 5 come into contact with the human head, the load of the shell 1 is applied to the head in a continuous line (for example, creating a feeling of the shell 1 digging into the skin), reducing the comfort of the fit.

[0028] At this time, since the leg portion 5 is formed with a thin portion 15 having high flexibility and the protruding portions 13, 14 having low flexibility, the leg portion 5 comes into intermittent contact with the human head, and compared to when the load of the shell 1 is applied to the human head in a continuous line, the feeling of the shell 5 digging into the skin is reduced, and the deterioration of the wearing comfort is suppressed.

[0029] The hammock 2 is formed by injection molding using a synthetic resin material. In this injection molding, the portion of the mold corresponding to the leg portion 5 is relatively narrow and long. When molten resin flows inside such a narrow and long mold, molding defects are likely to occur due to flow resistance, but the portion corresponding to the protrusions 13, 14 (thick portions) of the mold becomes a pool of molten resin. Therefore, the distance of the relatively narrow portion corresponding to the leg portion 5 of the mold is substantially shortened, and molding defects can be prevented.

[0030] Furthermore, the protrusions 13, 14 of the leg 5 form a gap between the leg 5 and the shell 1. Among the multiple protrusions 13, 14, the protrusion 13 formed at a position closest to the connecting portion 12 functions as a finger hook.

[0031] The inner surface of the shell 1 is provided with a rivet-like portion 16 (locking portion) for locking the connecting portion 12 when connecting the legs 5. As shown in Fig. 4, the rivet-like portion 16 includes a rivet shaft 16a that protrudes to the inner surface of the shell 1, and a disk-shaped rivet head 16b that expands in diameter at the top of the rivet shaft 16a.

[0032] 2 and 5, the connecting portion 12 is formed with a large diameter opening 12a having a size that allows the rivet portion 16 to pass through and a small diameter opening 12b having a size that approximately corresponds to the outer diameter of the rivet shaft 16a and through which the rivet portion 16 cannot pass, which are adjacent to and continuous with each other. The small diameter opening 12b is formed at a lower position (the tip side of the leg portion 5) than the large diameter opening 12a. The structure of the connecting portion 12 in this embodiment is generally called a daruma hole type.

[0033] When connecting the leg 5 to the shell 1, the rivet head 16b of the rivet-like portion 16 is passed through the large diameter opening 12a of the connecting portion 12, and then the connecting portion 12 is slid along the inner surface of the shell 1 toward the top of the shell 1, and the rivet shaft 16a is fitted into the small diameter opening 12b.

[0034] When removing the leg 5 from the shell 1, the connecting portion 12 is slid along the inner surface of the shell 1 toward the lower edge of the shell 1, and the rivet shaft 16a of the rivet-like portion 16 is moved relatively from the small diameter opening 12b to the large diameter opening 12a.

[0035] At this time, by hooking a finger on the protrusion 13 (finger hook) of the leg 5 shown in FIG.

[0036] Moreover, the protrusion 13 of the leg 5, which functions as a finger hook, is provided on an extension line (not shown) of the movement trajectory of the rivet shaft 16a of the rivet-shaped portion 16 when it moves from the small diameter opening 12b to the large diameter opening 12a of the connecting portion 12. This allows the force applied to the protrusion 13 to be efficiently transmitted to the connecting portion 12, and even if the rivet shaft 16a is firmly fitted into the small diameter opening 12b, the engagement between the rivet shaft 16a and the small diameter opening 12b can be smoothly released.

[0037] Then, the leg portion 5 can be removed from the shell 1 by removing the rivet head 16b of the rivet-like portion 16 that has moved to the large diameter opening 12a from the large diameter opening 12a.

[0038] As shown in FIG. 5, by providing a guide mark 17 (display) indicating the sliding direction when removing on the convex portion 13 (finger hook portion), not only can the sliding operation direction when removing be easily visually confirmed, but also the position of the convex portion 13 (finger hook portion) where the finger is hooked can be easily determined.

[0039] 2, in this embodiment, a headband connecting piece 8 and a chin strap connecting piece 9 are provided on both sides of the leg 5, and these can also be used as finger hooks. That is, by hooking fingers on the headband connecting piece 8 and the chin strap connecting piece 9 and sliding the connecting part 12 along the inner surface of the shell 1 toward the lower edge of the shell 1, the leg 5 can be easily removed from the shell 1.

[0040] In addition, in this embodiment, the connection structure between the legs 5 of the hammock 2 and the shell 1 is described as being made by the rivet-like portion 16 of the shell 1 and the so-called daruma-hole type connection portion 12. However, the finger hook portion of the present invention can also be applied to a so-called bracket-type connection structure (not shown in the figure) (for example, see Patent Publication No. 6348464) to obtain the same effect.

[0041] Next, the shock absorbing parts 7 will be described. The shock absorbing parts 7 are provided in four locations: the front, rear, left and right. Of these, the left and right shock absorbing parts 7 are connected to the restriction part 6.

[0042] As shown in Fig. 2, the restricting portions 6 are provided in pair at positions slightly forward of the vertex and offset to the left and right from the vertex, and as shown in Fig. 6, the restricting portion includes a restricting portion main body 61 and a restricting portion support portion 62 that supports the restricting portion main body 61. The restricting portion support portion 62 is provided integrally with the vertex annular portion 4. The restricting portion support portion 62 supports the left and right impact absorbing portions 7 via extension portions 63.

[0043] The restricting body 61 is formed in a honeycomb shape by assembling a plurality of hexagonal cylindrical bodies 61a. Since the cylindrical bodies 61a are hexagonal cylindrical, it is possible to configure the restricting body 61 in a honeycomb shape in which adjacent cylindrical bodies 61a share a peripheral wall.

[0044] The restriction portion main body 61 has a structure including a plurality of cylindrical bodies 61a, and therefore the restriction portion main body 61 can have a structure in which the buckling strength increases stepwise from the peripheral wall side to the inner side.

[0045] That is, as shown in an exaggerated manner for the sake of convenience in Fig. 7, when an impact load is applied to the top of the shell 1, the top of the shell 1 is deformed in a concave manner, and the distance between the inner surface of the shell 1 and the human head becomes smaller. As a result, the restricting portion main body 61, against which the shell 1 is pressed, undergoes buckling deformation at a part of the peripheral corner of its upper end. Meanwhile, the other parts of the restricting portion main body 61 hardly undergo buckling deformation, and thus restrict the approach of the shell 1 to the human head, preventing the shell 1 from coming into contact with the human head.

[0046] In this way, the restricting body 61 prevents the shell 1 from coming into contact with the head, so the burden on the legs 5 of the hammock 2 can be greatly reduced. Therefore, the legs 5 can be made relatively thin or narrow, which reduces the amount of synthetic resin material, thereby reducing costs and making the hammock 2 lighter.

[0047] As shown in FIG. 6, the regulating portion support portion 62 is formed in a plate shape and closes the bottom of the regulating portion main body 61, thereby preventing, for example, the cylindrical body 61a of the regulating portion main body 61 from directly contacting the human head, thereby preventing a decrease in the wearing comfort.

[0048] With the above-mentioned configuration, the regulating portion 6 can easily adjust the crushing speed and crushed shape associated with the pressure applied by the shell 1 by appropriately setting the wall thickness of the peripheral wall of each cylindrical body 61a constituting the regulating portion main body 61, the number of cylindrical bodies 61a (the cylindrical body of the regulating portion in the present invention may be one or more), the height of the cylindrical body 61a, and the diameter of the cylindrical portion 61a. [Explanation of symbols]

[0049] 1...shell body, 2...hammock (inner body), 3...headband (inner body), 4...top annular portion, 5...legs, 6...regulating portion, 7...shock absorbing portion, 8...headband connecting piece, 9...chin strap connecting piece, 10...projecting portion, 11...hole, 12...connecting portion, 13, 14...convex portion (thick portion), 15...thin portion, 13...convex portion (finger hook portion), 16...rivet-shaped portion (locking portion), 16a...rivet shaft, 16b...rivet head, 12a...large diameter opening, 12b...small diameter opening, 17...guidance mark (indication portion), 61...regulating portion main body, 62...regulating portion support portion, 63...extending portion, 61a...cylindrical body.

Claims

1. A helmet comprising: a shell body covering a human head; and an inner body provided between the shell body and the human head, the inner body having a plurality of legs extending downward from a top side thereof, each leg having a connecting part at a lower end thereof which is connected to the shell body by being engaged with a locking part of the shell body, the connecting part being disengaged from the locking part by being moved downwardly of the shell body, The leg portion includes a finger hook portion on which a finger can be hooked when the connecting portion is moved toward the bottom of the shell body, the finger hook portion is tubular and has a long axis and a short axis, and an outer circumferential portion on the short axis side is erected from the leg portion so as to coincide with both side edges of the leg portion along an extension direction, The helmet is characterized in that the finger hooks are arranged in parallel in a direction intersecting the direction in which the legs extend.

2. 2. The helmet according to claim 1, wherein the finger hook is formed in a shape that protrudes from the leg portion toward the inner surface of the shell.

3. 3. The helmet according to claim 1, wherein the finger hook portion is provided on an extension of a movement path of the connecting portion that moves when the connecting portion is released from the locking portion.

4. A helmet as described in any one of claims 1 to 3, characterized in that an indicator portion is provided at a position corresponding to the finger hook portion to visually guide the movement direction of the connecting portion when releasing the engagement with the connecting protrusion.

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