Locking means for chin guard

Abstract

The present invention relates to a chin guard-fixing means, the chin guard-fixing means according to the present invention being provided in a helmet comprising a helmet body (10) and a chin guard (20) rotatably coupled thereto, and comprising: links (200) to which the chin guard (20) is coupled and about which same rotates; arms (230) each of which rotates in conjunction with a link (200); and fixing parts (600) for fixing the arms (230).

Description

Chin guard fixing means

[0001] The present invention relates to a chin guard fixing means.

[0002]

[0003] Typically, helmets are required to protect the rider's head when riding a two-wheeled vehicle at high speeds. These helmets typically feature an opening at the front to ensure the rider's forward visibility. Furthermore, the opening may be equipped with a shield that can be selectively opened and closed to block wind and dust from entering during operation.

[0004] Meanwhile, a helmet according to the prior art is equipped with a chin guard to protect the wearer's chin, as disclosed in the patent document of the prior art document below.

[0005]

[0006] [Prior Art Literature]

[0007] [Patent Document]

[0008] (Patent Document 1) KR10-2014-0001141 A

[0009]

[0010] One aspect of the present invention relates to a chin guard fixing means that stably fixes a chin guard and can be easily released from the fixing.

[0011]

[0012] A chin guard fixing means according to an embodiment of the present invention is provided to a helmet including a helmet body and a chin guard rotatably connected to the helmet body, and includes a link to which the chin guard is connected and which rotates, an arm that rotates in conjunction with the link, and a fixing part that fixes the arm.

[0013] Here, in the chin guard fixing means according to an embodiment of the present invention, a sliding portion is formed in the arm along the longitudinal direction, and as the chin guard rotates, the connecting portion formed in the link slides along the sliding portion.

[0014] At this time, in the chin guard fixing means according to the embodiment of the present invention, a first fastening part is formed on one side of the arm, and a second fastening part that is fastened to the first fastening part is formed on one side of the fixing part.

[0015] At this time, in the chin guard fixing means according to the embodiment of the present invention, when the chin guard is rotated by an external force, the first fastening part is separated from the second fastening part.

[0016] At this time, in the chin guard fixing means according to the embodiment of the present invention, the fixing part rotates based on the rotation axis, and when the fixing part rotates in one direction, the second fastening part is fastened to the first fastening part.

[0017] At this time, in the chin guard fixing means according to the embodiment of the present invention, the first fastening part and the second fastening part are formed in a hook shape.

[0018] At this time, in the chin guard fixing means according to the embodiment of the present invention, elastic force is provided to the fixing part in the other direction.

[0019] At this time, in the chin guard fixing means according to the embodiment of the present invention, when the fixing part is rotated in another direction, a stopper is provided that comes into contact with the fixing part and stops the fixing part.

[0020] At this time, in the chin guard fixing means according to the embodiment of the present invention, the stopper includes an elastic body.

[0021] At this time, in the chin guard fixing means according to the embodiment of the present invention, a third fastening part is formed on the other side of the fixing part, and a fourth fastening part is provided to which the third fastening part is fastened when the second fastening part is fastened to the first fastening part.

[0022] At this time, in the chin guard fixing means according to the embodiment of the present invention, the fourth fastening portion is formed on a sliding member that can slide, and elastic force is provided to the sliding member in the direction in which the fourth fastening portion is fastened to the third fastening portion.

[0023] At this time, in the chin guard fixing means according to the embodiment of the present invention, when the chin guard is rotated, the link is rotated and the link presses the sliding member in a direction in which the fourth fastening part is separated from the third fastening part.

[0024]

[0025] The features and advantages of the present invention will become more apparent from the following detailed description based on the attached drawings.

[0026] Prior to this, the terms and words used in this specification and claims should not be interpreted in their usual or dictionary meanings, but should be interpreted in the sense and concept that is consistent with the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concept of the term to explain his or her own invention in the best way.

[0027]

[0028] According to the present invention, there is an advantage in that not only can the chin guard be stably fixed, but also the fixation can be easily released.

[0029]

[0030] Figure 1 is a side view of a helmet equipped with a chin guard rotation mechanism and a chin guard fixing means according to an embodiment of the present invention;

[0031] Figure 2 is an exploded perspective view of a chin guard rotation mechanism and a chin guard fixing means according to an embodiment of the present invention.

[0032] Figures 3 to 7 are side views illustrating the process of operating a helmet equipped with a chin guard rotation mechanism and a chin guard fixing means according to an embodiment of the present invention, and a side view illustrating the process of operating a chin guard rotation mechanism, and

[0033] FIGS. 8 and 9 are side views illustrating the process of operating a helmet equipped with a chin guard rotation mechanism and a chin guard fixing means according to an embodiment of the present invention, and a side view illustrating the process of operating the chin guard fixing means.

[0034]

[0035] The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In this specification, when reference numerals are given to components in each drawing, it should be noted that, as far as possible, identical components are given the same numerals even if they are shown in different drawings. Furthermore, terms such as "first," "second," etc. are used to distinguish one component from another, and the components are not limited by these terms. In the following description of the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention will be omitted.

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0037]

[0038] FIG. 1 is a side view of a helmet equipped with a chin guard rotation mechanism and a chin guard fixing means according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the chin guard rotation mechanism and the chin guard fixing means according to an embodiment of the present invention.

[0039] As illustrated in FIGS. 1 and 2, a chin guard fixing means according to the present embodiment is provided to a helmet including a helmet body (10) and a chin guard (20) rotatably coupled to the helmet body (10), and includes a link (200) to which the chin guard (20) is coupled and rotatably coupled, an arm (230) that is rotatably coupled with the link (200), and a fixing member (600) that fixes the arm (230).

[0040]

[0041] Basically, the helmet body (10) serves to protect the wearer's head. This helmet body (10) may be formed of a material capable of absorbing impact. For example, the helmet body (10) may include an outer shell formed of a hard synthetic resin or the like, which has high strength, and an absorbent body formed of expanded polystyrene (EPS) or the like, which has appropriate strength and elasticity, and which is placed inside the outer shell. The absorbent body may be provided with pads or the like to enhance the stability of wearing.

[0042] In addition, the chin guard (20) serves to protect the wearer's chin, and can be extended in an arc shape so that it can be positioned in front of the wearer's chin as a whole. At this time, the chin guard (20) is rotatably connected at both ends to both sides of the helmet body (10) (e.g., ratchet (40)) and can rotate from a first predetermined position to a third predetermined position. For example, the first predetermined position refers to a position when the chin guard (20) is positioned in front of the wearer's chin (Full Face Mode) (see FIG. 3a), the second predetermined position refers to a position when the chin guard (20) is positioned above the helmet body (10) (Wearing Mode) (see FIG. 6a), and the third predetermined position may refer to a position when the chin guard (20) is positioned at the rear of the helmet body (10) (Open Face Mode) (see FIG. 7a).

[0043] And, the shield (30) serves to open and close the opening formed in the front of the helmet body (10), and is rotatably coupled to both sides of the helmet body (10) (e.g., ratchet (40)), and rotates with respect to the helmet body (10) and can rotate from a first position to a second position. For example, the first position may mean a position where the shield (30) closes the opening (see FIG. 3a), and the second position may mean a position where the shield (30) opens the opening (see FIG. 4a).

[0044] The above-described chin guard (20) and shield (30) are rotated in conjunction with the chin guard rotation mechanism (100) according to the present embodiment. Hereinafter, the chin guard rotation mechanism (100) will be described in detail.

[0045]

[0046] As illustrated in FIGS. 3A to 4A, when the chin guard (20) is rotated from the front of the wearer's chin to the helmet body (10) at a first predetermined angle (A), the shield (30) can also be rotated upwards to open the opening. That is, when the chin guard (20) is rotated from the first predetermined position (Full Face Mode) by the first predetermined angle (A), the shield (30) can be rotated from the first position (opening closed position) to the second position (opening open position).

[0047] Next, as illustrated in FIGS. 5A to 6A, when the chin guard (20) is rotated from a first predetermined angle (A) to a third predetermined angle (C) greater than the first predetermined angle (A) with respect to the helmet body (10), the shield (30) may remain stationary without being rotated. That is, while the chin guard (20) is rotated to the second predetermined position (Wearing Mode), the shield (30) may be maintained at the second position (open position).

[0048] Next, as illustrated in FIG. 7a, when the chin guard (20) is rotated to a second predetermined angle (B) greater than the first and third predetermined angles (A, C) with respect to the helmet body (10), the shield (30) can be rotated downward to close the opening. That is, when the chin guard (20) is rotated to the third predetermined position (Open Face Mode), the shield (30) can be rotated to the first position (open portion closed position).

[0049] However, it is not necessary that the shield (30) rotates when the chin guard (20) rotates. When the shield (30) rotates downward and the opening is closed, the chin guard (20) may rotate to a second predetermined angle (B) with respect to the helmet body (10). That is, when the shield (30) rotates from the second position (opening position) to the first position (opening position), the chin guard (20) may rotate to a third predetermined position (Open Face Mode).

[0050] Ultimately, since the chin guard (20) and the shield (30) are linked and rotated, when the chin guard (20) is rotated, the shield (30) is rotated, and when the chin guard (20) is in the second predetermined position (Wearing Mode, see FIG. 6a), the shield (30) is in the second position (open position), so that it is easy for the wearer to wear the helmet.

[0051] In addition, since the chin guard (20) and the shield (30) are rotated in conjunction with each other, when the shield (30) is rotated downward while the chin guard (20) is positioned at the top (when the shield (30) is rotated from the second position (open part open position) to the first position (open part closed position) (see FIGS. 6a to 7a)), the chin guard (20) can automatically rotate to the third predetermined position (Open Face Mode) at the rear of the helmet body (10).

[0052] As illustrated in FIG. 2, the chin guard rotation mechanism (100) may be included, for example, within a ratchet (40), and may basically include a link (200) and an arm (230) that rotate with respect to the helmet body (10, ratchet (40)). Specifically, the link (200) may have one side coupled to the chin guard (20), and the arm (230) may support the shield (30) so that the shield (30) rotates. That is, the link (200) is coupled to the chin guard (20), and the arm (230) supports the shield (30), and at this time, the link (200) and the arm (230) rotate in conjunction with each other, so that the chin guard (20) and the shield (30) can rotate in conjunction with each other.

[0053] More specifically, the link (200) may include a first link (210) and a second link (220). Here, the end of the chin guard (20) (e.g., the connecting hole (25)) is simultaneously connected to one side of the first link (210) and one side of the second link (220).

[0054] Meanwhile, the other side of the first link (210) rotates based on the first rotation axis (211) provided in the ratchet (40), and the other side of the second link (220) rotates based on the second rotation axis (221, different from the first rotation axis (211)) provided in the ratchet (40). At this time, since one side of the first link (210) and one side of the second link (220) are simultaneously coupled to the end of the chin guard (20), the first link (210) and the second link (220) can rotate in conjunction with each other as the chin guard (20) rotates.

[0055] In addition, the arm (230) is formed with a sliding portion (240) extended to be recessed along the longitudinal direction on one side, and a connecting portion (213) formed to protrude at the end of the first link (210) is inserted into the sliding portion (240) of the arm (230) and is slidable along the sliding portion (240). Specifically, as the chin guard (20) rotates, the first link (210) rotates around the first rotation axis (211), and the connecting portion (213) of the first link (210) can slide along the sliding portion (240). More specifically, the sliding portion (240) may include a first sliding portion (240a) and a second sliding portion (240b). Here, the first sliding portion (240a) extends in an arc shape, and the second sliding portion (240b) extends in an arc shape from the end of the first sliding portion (240a). At this time, the center of the arc shape of the first sliding part (240a) and the center of the arc shape of the second sliding part (240b) are different from each other. Therefore, the point where the first sliding part (240a) and the second sliding part (240b) meet can form a bent shape. Ultimately, as the chin guard (20) rotates, the connecting part (213) of the first link (210) can slide along the first sliding part (240a), then slide along the second sliding part (240b), and finally slide along the first sliding part (240a) again.

[0056] Meanwhile, a support member (300) may be arranged on the upper side of one side of the arm (230). At this time, a shield (30) is coupled to the support member (300), and the support member (300) may be rotated while being guided by a ratchet (40). Therefore, when the arm (230) is rotated, the arm (230) presses the support member (300), and the support member (300) and the shield (30) may be rotated. In addition, the arm (230) may be rotated in the vertical direction based on the rotation member (260, formed on the ratchet (40)).

[0057] The operational relationship of the first link (210), second link (220), and arm (230) described above is specifically as follows.

[0058] As shown in FIGS. 3 and 4, when the chin guard (20) is rotated from the front of the wearer's chin to a first predetermined angle (A) with respect to the helmet body (10), and the shield (30) is rotated upward, the connecting portion (213) of the first link (210) can slide along the first sliding portion (240a) of the arm (230). Specifically, as the chin guard (20) rotates in one direction (clockwise), the first link (210) and the second link (220) coupled to the chin guard (20) rotate in the other direction (counterclockwise), and as the coupling portion (213) of the first link (210) slides along the first sliding portion (240a) of the arm (230), the arm (230) rotates in one direction (clockwise), so that the shield (30) supported on the arm (230) rotates upward (in one direction). Consequently, when the chin guard (20) rotates by a first predetermined angle (A) from a first predetermined position (Full Face Mode), the shield (30) can rotate from a first position (open portion closed position) to a second position (open portion open position).

[0059] As illustrated in FIGS. 5 and 6, when the chin guard (20) is rotated from a first predetermined angle (A) to a third predetermined angle (C) with respect to the helmet body (10) and the shield (30) is not rotated, the coupling portion (213) of the first link (210) can slide along the second sliding portion (240b) of the arm (230). Specifically, as the chin guard (20) is rotated in one direction (clockwise), the first link (210) and the second link (220) coupled to the chin guard (20) are rotated in the other direction (counterclockwise), and the coupling portion (213) of the first link (210) slides along the second sliding portion (240b) of the arm (230) (see FIG. 5b). Thereafter, as the chin guard (20) is further rotated in one direction (clockwise), the first link (210) and the second link (220) coupled to the chin guard (20) are rotated in one direction (clockwise) and the other direction (counterclockwise), respectively, and the coupling portion (213) of the first link (210) slides along the second sliding portion (240b) of the arm (230) (see FIG. 6b). Ultimately, the coupling portion (213) of the first link (210) slides from one end (the end connected to the first sliding portion (240a)) of the second sliding portion (240b) of the arm (230) to the other end (see FIG. 5b), and then slides from the other end to the first end of the second sliding portion (240b) (see FIG. 6b). At this time, the radius of curvature of the second sliding portion (240b) may correspond to the distance between the coupling portion (213) and the first rotation axis (211). Accordingly, while the coupling portion (213) of the first link (210) moves along both ends of the second sliding portion (240b), the arm (230) does not rotate, and accordingly, the shield (30) supported on the arm (230) also does not rotate. Consequently, while the chin guard (20) rotates to the second predetermined position (Wearing Mode), the shield (30) can be maintained at the second position (open position).

[0060] As illustrated in FIG. 7, when the chin guard (20) is rotated from the third predetermined angle (C) to the second predetermined angle (B) with respect to the helmet body (10), and the shield (30) is rotated downward, the connecting portion (213) of the first link (210) can slide along the first sliding portion (240a) of the arm (230). Specifically, as the chin guard (20) rotates in one direction (clockwise), the first link (210) and the second link (220) coupled to the chin guard (20) rotate in one direction (clockwise) (however, the angle at which the second link (220) rotates is smaller than that of the first link (210), and the coupling portion (213) of the first link (210) slides along the first sliding portion (240a) of the arm (230), while the arm (230) rotates in the other direction (counterclockwise), so that the shield (30) supported on the arm (230) rotates downward (in the other direction). As a result, when the chin guard (20) rotates from the second predetermined position (Wearing Mode) to the third predetermined position (Open Face Mode), the shield (30) can rotate to the first position (open part closed position).

[0061] However, it is not necessary that the chin guard (20) rotates and the shield (30) rotates downward, and the shield (30) may rotate downward and the chin guard (20) may rotate. That is, when the shield (30) rotates downward and the chin guard (20) rotates to a second predetermined angle (B) with respect to the helmet body (10), the connecting portion (213) of the first link (210) can slide along the first sliding portion (240a) of the arm (230). Specifically, as the shield (30) is rotated in the other direction (counterclockwise), the arm (230) on which the shield (30) is supported is rotated in the other direction (counterclockwise), and as the coupling portion (213) of the first link (210) slides along the first sliding portion (240a) of the arm (230), the first link (210) and the second link (220) are rotated in one direction (clockwise), and accordingly, the chin guard (20) coupled to the first link (210) and the second link (220) can be rotated in one direction (clockwise). Consequently, when the shield (30) is rotated from the second position (open portion open position) to the first position (open portion closed position), the chin guard (20) can be rotated from the second predetermined position (Wearing Mode) to the third predetermined position (Open Face Mode).

[0062] In general, one side of the first link (210) and one side of the second link (220) coupled to the chin guard (20) are reversed as the chin guard (20) rotates. Specifically, as the chin guard (20) rotates with respect to the helmet body (10) from the front of the wearer's chin, one side of the first link (210) may be positioned in front of one side of the second link (220) (see FIGS. 3b and 4b), then positioned above one side of the second link (220) (see FIGS. 5b and 6b), and then positioned rearward of one side of the second link (220) (see FIG. 7b).

[0063] Meanwhile, in order to guide the path along which one side of the first link (210) and one side of the second link (220) move, a guide hole (500) may be formed on the front of the ratchet (40). Specifically, the guide hole (500) may include a first guide hole (510) and a second guide hole (520). Here, the first guide hole (510) serves to guide the path along which one side of the first link (210) moves, and the second guide hole (520) serves to guide the path along which one side of the second link (220) moves. Accordingly, the radius of curvature of the first guide hole (510) may correspond to the distance between one side of the first link (210) and the first rotation axis (211), and the radius of curvature of the second guide hole (520) may correspond to the distance between one side of the second link (220) and the second rotation axis (221).

[0064]

[0065] Below, the chin guard fixing means for fixing the chin guard (20) will be described in detail.

[0066] A chin guard fixing means according to an embodiment of the present invention includes a fixing portion (600). Here, the fixing portion (600) fixes the arm (230), thereby ultimately fixing the chin guard (20). Specifically, a first fastening portion (610) is formed on one side of the arm (230), and a second fastening portion (620) that is fastened to the first fastening portion (610) of the arm (230) is formed on one side of the fixing portion (600). Accordingly, when the second fastening portion (620) of the fixed portion (600) is fastened to the first fastening portion (610) of the arm (230), and the rotation of the arm (230) is limited, the rotation of the link (200, first link (210)) coupled to the sliding portion (240) of the arm (230) is limited, and as a result, the rotation of the chin guard (20) coupled to the link (200, first link (210)) can be limited. At this time, the fixed portion (600) is arranged at the lower portion of the arm (230) and the link (200, first link (210)), and can be rotated based on the rotation axis (630) provided in the ratchet (40). When the fixed part (600) is rotated in one direction (counterclockwise in the drawing) based on the rotation axis (630), the second fastening part (620) can be fastened to the first fastening part (610) of the arm (230). Here, the first fastening part (610) and the second fastening part (620) can be formed in a hook shape so that they can be interlocked with each other. Meanwhile, the fixed part (600) can be provided with elastic force in another direction (the opposite direction of one direction, clockwise in the drawing). For example, a torsion spring (605) can be coupled to the fixed part (600) to provide elastic force to the fixed part (600) in the other direction. Accordingly, if the wearer does not rotate the fixed part (600) in one direction (counterclockwise in the drawing), the second fastening part (620) of the fixed part (600) can be maintained in a state separated from the first fastening part (610) of the arm (230) by the elastic force provided to the fixed part (600).In addition, when the second fastening part (620) of the fixed part (600) is fastened to the first fastening part (610) of the arm (230), and the wearer rotates the fixed part (600) in another direction (clockwise in the drawing), the second fastening part (620) of the fixed part (600) is separated from the first fastening part (610) of the arm (230), and at the same time, the second fastening part (620) of the fixed part (600) and the first fastening part (610) of the arm (230) can be spaced apart from each other by the elastic force provided to the fixed part (600). At this time, a stopper (640) may be provided to limit the rotation angle of the fixed part (600). Here, the stopper (640) comes into contact with the fixed part (600) and stops the rotation of the fixed part (600) when the fixed part (600) is rotated at a certain angle in the other direction (clockwise in the drawing). At this time, in order to prevent noise from being generated when the fixed part (600) comes into contact with the stopper (640), the stopper (640) may include an elastic body (643). For example, the stopper (640) may include a main body (641) and an elastic body (643) surrounding the main body (641). At this time, the elastic body (643) may be formed of TPU (Thermoplastic Polyurethane), but is not necessarily limited thereto and may be formed of any material having elasticity. As a result, since the fixed part (600) comes into contact with the elastic body (643) of the stopper (640), noise can be prevented from being generated.

[0067] Meanwhile, when the arm (230) is positioned at the lowest side, the second fastening part (620) of the fixing part (600) can be fastened to the first fastening part (610) of the arm (230). For example, the case where the arm (230) is positioned at the lowest side is when the chin guard (20) is positioned at the rear of the helmet body (10) (Open Face Mode, see FIGS. 8a and 8b). Therefore, when the chin guard (20) is positioned at the rear of the helmet body (10) (Open Face Mode), the fixing part (600) can fix the chin guard (20) by fixing the arm (230).

[0068] However, if the chin guard (20) is rotated by an external force of the wearer, the first fastening part (610) may be separated from the second fastening part (620), and specific details related to this will be described later.

[0069] Additionally, when the second fastening portion (620) of the fixed portion (600) is fastened to the first fastening portion (610) of the arm (230), in order to prevent the fixed portion (600) from rotating arbitrarily (to prevent the second fastening portion (620) of the fixed portion (600) from being separated from the first fastening portion (610) of the arm (230), a third fastening portion (650) and a fourth fastening portion (670) may be provided. At this time, the third fastening portion (650) may be formed on the other side of the fixed portion (600), and the fourth fastening portion (670) may be formed on the sliding member (660) provided in the ratchet (40). When the second fastening portion (620) of the fixed portion (600) is fastened to the first fastening portion (610) of the arm (230), the third fastening portion (650) of the fixed portion (600) is fastened to the fourth fastening portion (670) of the sliding member (660), so that the fixed portion (600) can be fixed without being rotated arbitrarily. At this time, the third fastening portion (650) of the fixed portion (600) can be formed in a hook shape, and the fourth fastening portion (670) of the sliding member (660) can be formed in a protrusion shape so as to be inserted into the hook-shaped third fastening portion (650). Meanwhile, the sliding member (660) can slide with respect to the ratchet (40), and elastic force can be provided in the direction in which the fourth fastening portion (670) is fastened to the third fastening portion (650) (in the direction away from the rotation axis (630) of the fixed portion (600). In this way, since elastic force is provided to the sliding member (660), the fourth fastening portion (670) of the sliding member (660) is pressed and fastened to the third fastening portion (650), thereby preventing the third fastening portion (650) of the fixed member (600) from being arbitrarily separated from the fourth fastening portion (670) of the sliding member (660). Meanwhile, in order to provide elastic force to the sliding member (660), a compression spring (665), for example, may be provided between the sliding member (660) and the ratchet (40).

[0070] In addition, when the fixed part (600) is rotated by the wearer's operation and the second fastening part (620) of the fixed part (600) is fastened to the first fastening part (610) of the arm (230), the third fastening part (650) of the fixed part (300) presses the fourth fastening part (670) of the sliding member (660), and accordingly, the compression spring (665) is compressed, and the sliding member (660) slides in the direction of the rotation axis (630), so that the third fastening part (650) of the fixed part (300) and the fourth fastening part (670) of the sliding member (660) can be fastened. At this time, the third fastening part (650) of the fixed part (300) is elastically deformed, making it easy to fasten the third fastening part (650) and the fourth fastening part (670). For example, the third fastening portion (650) and the fourth fastening portion (670) can be fastened when the relatively thin neck portion of the hook-shaped third fastening portion (650) is elastically deformed.

[0071] As illustrated in FIGS. 9A and 9B, a protrusion (225) may be formed on a link (200, for example, a second link (220)). Accordingly, when the chin guard (20) rotates, the link (200) rotates, and the protrusion (225) of the link (200) may press the pressing portion (667) of the sliding member (660) in a direction in which the fourth fastening portion (670) separates from the third fastening portion (650). Accordingly, when the chin guard (20) rotates, the link (200) rotates, and the sliding member (660) slides by the protrusion (225), thereby releasing the fastening between the fourth fastening portion (670) and the third fastening portion (650). As a result, when the chin guard (20) is rotated, the fastening between the fourth fastening part (670) and the third fastening part (650) is released, and the fixed part (600) can be rotated, and accordingly, the first fastening part (610) can be separated from the second fastening part (620). In summary, when the chin guard (20) is rotated by an external force from the wearer or the like, the fastening between the fourth fastening part (670) and the third fastening part (650) is released, and when the fixed part (600) is rotated, the first fastening part (610) can be separated from the second fastening part (620). That is, when the chin guard (20) is rotated by an external force from the wearer or the like, the fixed part (600) can be separated from the arm (230) without damage to the fixed part (600).

[0072]

[0073] Although the present invention has been described in detail through specific examples, this is intended to specifically explain the present invention, and the present invention is not limited thereto, and it is clear that modifications and improvements can be made by those skilled in the art within the technical spirit of the present invention.

[0074]

[0075] All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

[0076]

[0077] [Explanation of symbols]

[0078] 10: Helmet body 20: Chin guard

[0079] 30: Shield 40: Ratchet

[0080] 100: Chingard rotation mechanism 200: Link

[0081] 210: First link 211: First rotation axis

[0082] 213: Joint 215: Second hook

[0083] 220: Second link 221: Second rotation axis

[0084] 230: female 240: sliding part

[0085] 240a: First sliding section 240b: Second sliding section

[0086] 250: connecting part 260: rotating part

[0087] 300: Support 500: Guide hole

[0088] 510: 1st guide hole 520: 2nd guide hole

[0089] 600: Fixed part 605: Torsion spring

[0090] 610: First fastener 620: Second fastener

[0091] 630: Rotating shaft 640: Stopper

[0092] 641: Body 643: Elastic body

[0093] 650: Third fastening member 660: Sliding member

[0094] 665: Compression spring 670: Fourth fastening part

Claims

1. A chin guard fixing means provided on a helmet including a helmet body and a chin guard rotatably connected to the helmet body, The above chin guard is connected and rotated; A rock that rotates in conjunction with the above link; and A fixing member for fixing the above cancer; A chin guard fixing means including:

2. In claim 1, The above cancer has a sliding portion formed along the length direction, A chin guard fixing means in which the connecting portion formed in the link slides along the sliding portion as the chin guard rotates.

3. In claim 1, A first fastening portion is formed on one side of the above cancer, A chin guard fixing means having a second fastening portion formed on one side of the above-mentioned fixing portion, which is fastened to the first fastening portion.

4. In claim 3, A chin guard fixing means in which the first fastening part is separated from the second fastening part when the above chin guard is rotated by an external force.

5. In claim 3, The above fixed part rotates around the rotation axis, A chin guard fixing means in which the second fastening part is fastened to the first fastening part when the above-mentioned fixed part is rotated in one direction.

6. In claim 3, A chin guard fixing means in which the first fastening portion and the second fastening portion are formed in a hook shape.

7. In claim 5, A chin guard fixing means that provides elasticity in different directions to the above-mentioned fixing part.

8. In claim 7, A chin guard fixing means having a stopper that comes into contact with the fixed part and stops the fixed part when the fixed part is rotated in another direction.

9. In claim 8, The above stopper is a chin guard fixing means including an elastic body.

10. In claim 3, A third fastening part is formed on the other side of the above fixed part, When the second fastening part is fastened to the first fastening part, A chin guard fixing means having a fourth fastening part to which the third fastening part is fastened.

11. In claim 10, The above fourth fastening portion is formed on a sliding member that can slide, A chin guard fixing means that provides elasticity to the sliding member in the direction in which the fourth fastening part is fastened to the third fastening part.

12. In claim 11, A chin guard fixing means that, when the above-mentioned chin guard is rotated, the link is rotated and the link presses the sliding member in a direction in which the fourth fastening part is separated from the third fastening part.

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