Helmet

Abstract

A helmet according to an embodiment of the present invention comprises: a shell having a space in which a user's head is located; and a shield that is rotatably provided on the helmet and has first protrusions protruding at both ends.

Description

helmet

[0001] The present invention relates to a helmet that can reduce air resistance and delay flow separation by generating vortices, and can reduce wind noise generated during driving.

[0002] Generally, various types of vortex generation structures have been disclosed and are continuously being developed due to their advantages of reducing air resistance and delaying flow separation.

[0003] Structures for generating vortices are being applied in various ways, such as in vehicles and aircraft, which are closely related to air resistance.

[0004] However, in the case of helmets that must be worn when riding motorcycles, there was a problem in that it was difficult to apply the existing vortex generation structure, given that the original function of protecting the user's head must be maintained and noise caused by airflow can directly affect the user.

[0005] The present invention aims to solve the above-mentioned problems by providing a helmet that generates vortices through a simple protruding structure on the surface of the shield and shell, thereby reducing wind noise during driving.

[0006] The problems that the present invention aims to solve are not limited to those described above, and problems not mentioned will be clearly understood by those skilled in the art from this specification and the attached drawings.

[0007] The helmet of the present invention for solving the above problem comprises a shell having a space for a user's head to be positioned, and a shield rotatably provided on the helmet and having first protrusions formed at both ends.

[0008] A first recessed groove that narrows in width from front to rear may be formed in the first protrusion.

[0009] In the first recessed groove mentioned above, a plurality of second recessed grooves may be formed, the width of which narrows from the front to the rear.

[0010] A third recessed groove that is recessed upward or downward may be formed in the first recessed groove.

[0011] A plurality of second recessed grooves, which become narrower towards the rear, may be formed in the first protrusion.

[0012] At least one second protrusion may be formed in the shell.

[0013] The second protrusion mentioned above can be formed so that its width increases from the front to the rear.

[0014] A fourth recessed groove may be formed in the second protrusion, such that its width increases from the front to the rear.

[0015] The above-mentioned protrusion may be formed such that the central part is the highest, and the height decreases as it extends toward the front and rear.

[0016] The shell is provided with a spoiler unit, and at least one second protrusion may be formed on the spoiler.

[0017] The second protrusion mentioned above can be formed so that its width increases from the front to the rear.

[0018] A fourth recessed groove may be formed in the second protrusion, such that its width increases from the front to the rear.

[0019] The above-mentioned protrusion may be formed such that the central part is the highest, and the height decreases as it extends toward the front and rear.

[0020] The spoiler unit may include a spoiler body fixed to the shell and a spoiler coupled to the spoiler body so as to be movable in the front-rear direction.

[0021] It may further include the spoiler body and an elastic member coupled to the spoiler.

[0022] A helmet according to one embodiment of the present invention has the effect of reducing wind noise by forming protrusions of a simple structure on the shield and shell to artificially generate vortices in the airflow flowing over the helmet surface while driving.

[0023] The effects of the present invention are not limited to the effects described above, and unmentioned effects will be clearly understood by those skilled in the art from this specification and the accompanying drawings.

[0024] FIG. 1 is a perspective view of a helmet of a first embodiment of the present invention;

[0025] FIG. 2 is a drawing showing a state in which the shield is separated from the helmet of the first embodiment of the present invention;

[0026] FIG. 3 is a perspective view of a shield of an embodiment of the present invention;

[0027] FIG. 4 is a drawing showing the plan and side of the second protrusion of the helmet of the first embodiment of the present invention;

[0028] FIG. 5 is a perspective view of a shield of a second embodiment of the present invention;

[0029] FIG. 6 is a perspective view of a shield of the third embodiment of the present invention;

[0030] FIG. 7 is a perspective view of a shield of the fourth embodiment of the present invention;

[0031] FIG. 8 is a diagram showing the experimental results of simulating the air flow velocity on the shield surface of the fourth embodiment of the present invention;

[0032] FIG. 9 is a perspective view of a helmet of the fifth embodiment of the present invention;

[0033] FIG. 10 is a perspective view showing a state in which a spoiler is protruded from a helmet of the fifth embodiment of the present invention;

[0034] FIG. 11 is a drawing showing the interior of a spoiler unit of the fifth embodiment of the present invention;

[0035] FIG. 12 is a drawing for explaining the process of moving a spoiler in the spoiler unit of the present invention.

[0036] Specific embodiments of the present invention will be described in detail below with reference to the drawings. However, the concept of the present invention is not limited to the presented embodiments. Those skilled in the art who understand the concept of the present invention may easily propose other inventions that are inferior or other embodiments included within the scope of the concept of the present invention by adding, changing, or deleting other components within the same scope of the concept, and such are also to be considered to be included within the scope of the concept of the present invention.

[0037] FIG. 1 is a perspective view of a helmet of a first embodiment of the present invention, FIG. 2 is a drawing showing a state in which a shield is separated from a helmet of a first embodiment of the present invention, FIG. 3 is a perspective view of a shield of an embodiment of the present invention, and FIG. 4 is a drawing showing a plan and a side view of a second protrusion of a helmet of a first embodiment of the present invention.

[0038] Referring to FIGS. 1 to 4, the helmet (100) of the present embodiment includes a shell (110) and a shield (120).

[0039] The shell (110) forms a space where the user's head is positioned. Various known shapes may be applied to the shape of the shell (110).

[0040] The shield (120) is coupled to shield at least a portion of the front surface of the shell (110), and a first protrusion (130) is formed protrudingly at each end.

[0041] The shield (120) may be applied in various known shapes and may be rotatably coupled to the shell (110) as illustrated, or may be coupled to the shell in a fixed form.

[0042] The first protrusion (130) can be formed to protrude to a certain height from the surface of the shield (120). Accordingly, air flowing toward the front of the shield (120) flows along the surface of the shield (120) toward both ends. Then, it flows toward the first protrusion (130) formed protruding from the surface of the shield (120). As it passes through the protrusion (130), a vortex is formed primarily, and as it passes through the second protrusion (140) of the shell (110) described later, a second vortex is generated.

[0043] Meanwhile, as vortices are generated, the airflow velocity of the air flowing over the helmet surface slows down, and as a result, wind noise generated during driving is reduced.

[0044] In particular, when a hinge portion (120a) for connecting the shield (120) to the shell (110) is formed protrudingly, the airflow velocity through the hinge portion (120a) is reduced, thereby maximizing the effect of reducing wind noise.

[0045] The shell (110) may be provided with at least one second protrusion (140). The second protrusion (140) is formed protruding from the surface of the shell (110), and accordingly, air that has primarily generated a vortex while flowing through the first protrusion (130) generates an additional vortex while flowing through the second protrusion (140).

[0046] In this embodiment, the second protrusion (140) is formed such that its width (d1) narrows from the front to the rear. Additionally, a fourth recessed groove (140a) is formed in the second protrusion (140) such that its width (d2) narrows from the front to the rear. Furthermore, the second protrusion (140) is formed such that the central part (h1) is the highest, and its height decreases as it moves toward the front and rear.

[0047] In addition, multiple second protrusions (140) may be arranged in the cell (110) at regular intervals.

[0048] FIG. 5 is a perspective view of a shield of a second embodiment of the present invention, FIG. 6 is a perspective view of a shield of a third embodiment of the present invention, FIG. 7 is a perspective view of a shield of a fourth embodiment of the present invention, and FIG. 8 is a drawing showing experimental results simulating the air flow velocity on the surface of a shield of the fourth embodiment of the present invention.

[0049] Referring to FIGS. 5 to 8, in the shield (220) of the second embodiment of the present invention, a first recessed groove (220a) is formed in the first protrusion (220) such that its width narrows from front to back.

[0050] In addition, in the shield (320) of the third embodiment of the present invention, a plurality of second recessed grooves (320a) are formed continuously, with the width narrowing from the front to the rear. Thus, the entire structure is formed in a sawtooth-like shape.

[0051] The shield (420) of the fourth embodiment of the present invention is formed in a combined form of the recessed grooves of the second and third embodiments described above. That is, a plurality of second recessed grooves (420a) are formed continuously in a first recessed groove (420a) that is formed to become narrower towards the rear.

[0052] Furthermore, a third recessed groove (420c) that is recessed upward and downward is additionally formed in the first recessed groove (420a).

[0053] That is, through the structure of the first protrusion and the first to third recessed groove formed on the shield of the second to fourth embodiments, vortices are artificially generated in the airflow while the user is riding, and accordingly, the airflow velocity on the shell surface is reduced, thereby significantly reducing the magnitude of wind noise.

[0054] That is, referring to the results of a simulation of the air flow velocity in the structure of the fourth embodiment of the present invention and the shield in which protrusions and recessed grooves are not formed in FIG. 8, it can be seen that in the structure of the fourth embodiment, the air flow velocity is significantly reduced at the rear of the hinge portion (120a) (points indicated by arrows, which are shown in blue as the flow velocity decreases, and in (a), the flow velocity at the rear of the hinge portion (120a) is shown in blue, indicating that it is low).

[0055] In particular, when the hinge portion (120a) is protruding, a lot of wind noise is generated according to the protruding structure, and as illustrated, the flow velocity behind the hinge portion (120a) is significantly reduced, and accordingly, the wind noise is also reduced.

[0056] FIG. 9 is a perspective view of a helmet of the fifth embodiment of the present invention, FIG. 10 is a perspective view showing a state in which a spoiler is protruded from the helmet of the fifth embodiment of the present invention, FIG. 11 is a drawing showing the interior of a spoiler unit of the fifth embodiment of the present invention, and FIG. 12 is a drawing for explaining the process of moving a spoiler to the spoiler unit of the present invention.

[0057] Referring to FIGS. 9 to 12, the overall configuration of the present embodiment is the same as the embodiment described above, and the differences will be explained below.

[0058] In the shell (110) of the present embodiment, a spoiler unit (150) is provided, and a plurality of second protrusions (140) of the embodiment are arranged on the spoiler unit (150) at regular intervals.

[0059] The spoiler unit (150) is equipped with a spoiler body (151), a spoiler (152), an elastic member (153), and a guide part (154).

[0060] The spoiler body (151) is attached to the rear of the shell (110).

[0061] The spoiler (152) is coupled to the spoiler body (151) so as to be movable in the forward and backward directions. Therefore, the user will be able to drive with the spoiler (152) moved to the rear, as shown in FIG. 10.

[0062] The elastic member (153) is coupled between the spoiler body (151) and the spoiler (152) to assist in the movement of the spoiler (152). In particular, in this embodiment, a torsion spring may be used, and both ends of the torsion spring (153) are fixed to the spoiler body (151) and the spoiler (152).

[0063] The guide member (154) performs the function of guiding the sliding movement of the spoiler (152). The guide member (152) may have one or more guide grooves (154a).

[0064]

[0065] Although the structure and features of the present invention have been described above based on embodiments according to the present invention, the present invention is not limited thereto, and it is obvious to those skilled in the art that various changes or modifications can be made within the spirit and scope of the present invention; therefore, it is noted that such changes or modifications fall within the scope of the appended claims.

Claims

1. A shell in which a space is formed for the user's head to be positioned; and A shield rotatably provided on the helmet and having a first protrusion formed protrudingly at both ends; A helmet containing 2. In Paragraph 1, A helmet having a first recessed groove formed in the first protrusion that narrows in width from front to back.

3. In Paragraph 2, A helmet in which a plurality of second indentations are formed in the first indentation, with the width narrowing from the front to the rear.

4. In Paragraph 2, A helmet in which a third indentation is formed in the first indentation that is indented upward or downward.

5. In Paragraph 2, A helmet having a plurality of second recessed grooves formed in the first protrusion, the width of which narrows toward the rear.

6. In any one of paragraphs 1 through 5, A helmet having at least one second protrusion formed in the shell.

7. In Paragraph 6, A helmet in which the second protrusion is formed to increase in width from the front to the rear.

8. In Paragraph 6, A helmet having a fourth recessed groove formed in the second protrusion such that its width increases from the front to the rear.

9. In Paragraph 6, The above protrusion is formed with the highest part in the center, and A helmet formed so that the height decreases towards the front and rear.

10. In any one of paragraphs 1 through 5, The above shell is equipped with a spoiler unit, and A helmet in which at least one second protrusion is formed on the spoiler above.

11. In Paragraph 10, A helmet in which the second protrusion is formed to increase in width from the front to the rear.

12. In Paragraph 10, A helmet having a fourth recessed groove formed in the second protrusion such that its width increases from the front to the rear.

13. In Paragraph 10, The above protrusion is formed with the highest part in the center, and A helmet formed so that the height decreases towards the front and rear.

14. In Paragraph 10, The above spoiler unit is a helmet comprising a spoiler body fixed to the shell and a spoiler coupled to the spoiler body so as to be movable in the front-rear direction.

15. In Paragraph 14, A helmet further comprising the spoiler body and an elastic member coupled to the spoiler.

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