KR102478232B1 - Buckle for helmet chin strap and helmet comprising same - Google Patents

Abstract

A buckle for a helmet chin strap according to the present invention, which is arranged so that a user can fasten a chin strap when wearing a helmet, and provided so that the user pulls the chin strap in one direction to fixate the chin strap in a moved state, comprises: a chassis part formed with an internal space so as to draw the chin strap, which is fixated to the helmet, into an inlet on one side and withdraw the chin strap through the outlet on the other side or retreat the chin strap to the inlet; a catcher part provided on the chassis part so as to be able to rotate about a first axis, and restricting the movement of the chin strap, which is inserted into the chassis part, from the outlet to the inlet; and a lever part provided to be able to rotate about a second axis spaced apart from the first axis, and engaged with the catcher part to transmit power to the catcher part, wherein the lever part, when the chin strap moves toward the inlet, allows the catcher part to be separated from the chin strap while rotating in the direction opposite to the catcher part. According to the present invention, a user can separate a buckle and a chin strap simply by one hand in a safe state in which the driving is completed.

Description

A buckle for a helmet chin strap and a helmet including the buckle {BUCKLE FOR HELMET CHIN STRAP AND HELMET COMPRISING SAME}

The present invention relates to a buckle for a helmet chinstrap and a helmet including the same, and more particularly, to prevent unintentional removal of the helmet in advance by expanding the safety angle range in which only a lever can rotate within a predetermined rotation angle range. The present invention relates to a buckle for a helmet chin strap that can easily release the buckle and chin strap with one hand while securing safety by doing so, and a helmet including the same.

In general, a buckle included in a helmet is a device that stops a chin strap by hanging, and is used when adjusting the length of the chin strap using the buckle.

The buckle should be able to be easily released when the chinstrap is separated from the buckle as well as firmly fixing the chinstrap when stopping by hanging the chinstrap.

The buckle included in the conventional helmet is composed of a buckle in which the control lever receiving the elasticity of the spring is rotatably mounted by a shaft pin, and a chin strap having a multi-stage locking protrusion that is gradually caught and fixed by a stopper formed on the control lever.

In the buckle included in such a conventional helmet, when the chinstrap is inserted, the multi-stage locking protrusion formed on the chinstrap is caught step by step on the fixed gear formed on the catcher that receives the elasticity of the spring and binds the chinstrap and the buckle.

At this time, the lever of the buckle presses or lifts one side of the catcher to release the binding state of the buckle as the fixed gear is separated from the locking protrusion. That is, when an external force is transmitted to the lever, the lever rotates so that the fixed gear of the catcher is separated from the protrusion, and the binding state can be released.

However, in the above-described conventional buckle, the binding state is released even when the lever of the buckle is slightly pressed or lifted, so the chinstrap can be easily separated from the buckle, but the buckle is accidentally separated from the chinstrap when an external impact occurs, could be dislodged from the user's head.

In order to solve this problem, recently, a base that guides the movement of the chinstrap, a catcher coupled to the base and formed with irregularities mated with the gear mountain of the strap unit, and a lever coupled to the top of the catcher are included within a predetermined rotation angle range. A buckle configured so that only the lever can rotate and a helmet including it are being studied, but the buckle included in the conventional helmet can only implement a rotation angle of 20 to 30 degrees, so it is driven by a large external impact or user's mistake. However, there is a limitation that the situation in which the helmet is removed cannot be completely prevented.

In addition, the buckle included in the conventional helmet, in order to release the buckle in a safe state where the driving is finished, as shown in FIG. There was an inconvenience that the buckle and the chinstrap were separated and the helmet could be removed from the user's head only when external force was transmitted to the buckle in the outer (2) direction of the helmet.

The present invention is an invention made to solve the above-described problems of the prior art, and the buckle of the present invention expands the safety angle range in which only the lever can rotate within a predetermined rotation angle range to prevent unintentional helmet removal. The task is to include a chassis part, a catcher part, and a lever part organically coupled so that the buckle and the chinstrap can be easily released with one hand while securing safety by preventing it in advance.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

A buckle for a helmet chin strap according to an embodiment of the present invention for achieving the above object,

A buckle provided so that the user can tighten the chinstrap when wearing the helmet, and is provided to fix the chinstrap by pulling the chinstrap in one direction. a chassis portion having an internal space to be retracted into the inlet; a catcher provided on the chassis unit to be rotatable around a first axis and restricting movement of the chinstrap inserted into the chassis unit from the outlet to the inlet; and a lever part rotatably provided about a second shaft spaced apart from the first shaft and engaged with the catcher part to transmit power to the catcher part.

Here, when the chinstrap is moved in the inlet direction, the lever unit may separate the catcher from the chinstrap while rotating in opposite directions to the catcher.

Specifically, when an external force is transmitted, the lever part rotates in a direction from the inlet toward the outlet to separate the catcher from the chinstrap, and when rotation is restricted, the catcher and the chinstrap are kept apart and the external force is applied. The base may be detached from the chinstrap fixed to the helmet by transferring it to the chassis unit.

In other words, when an external force is applied to the lever part, the catcher part and the chinstrap until the lever pivots at a predetermined angle from the inlet toward the outlet, based on a virtual plane including the first shaft and the second shaft. It may be provided that this locked state is maintained.

Here, the predetermined angle may be 21 degrees to 62 degrees.

At this time, the lever part may be provided so that the catcher part and the chinstrap are maintained in a locked state until the lever part rotates in a predetermined angular range from the inlet toward the outlet when an external force is transmitted.

Specifically, the lever portion, but pivoting along the second axis, the plate provided to return to the initial position; a lever protruding toward the inlet of the chassis unit at the initial position; and a driving gear for rotating the catcher by lifting a driven gear provided on the catcher.

Here, the drive gear may include a first gear protruding in a direction opposite to the chinstrap inserted into the chassis at a predetermined angle with the lever; It may include a second gear protruding at a predetermined distance from the first gear.

In addition, the lever unit may maintain the locked state by locating the driven gear in a safety space between the lever and the first gear until it rotates within a predetermined angular range.

In addition, when the lever unit rotates beyond the preset angular range, the locked state may be released by engaging at least one of the first gear and the second gear with the driven gear.

Here, the driven gear may be formed of a fixed gear provided to engage with the chinstrap and a plurality of gear teeth spaced apart from the fixed gear and protruding toward the lever unit.

For example, the driven gear includes a third gear formed on one side of the fixed gear provided in the catcher portion provided to engage with the chin strap and a fourth gear spaced apart from the third gear, the first gear and the first gear. The locked state may be released as the third gear is pulled in between the two gears.

A helmet according to an embodiment of the present invention for achieving the above object may include the above-described helmet chin strap buckle.

A buckle for a helmet chin strap and a helmet including the helmet of the present invention for solving the above problems prevent the helmet from being forcibly removed from the head from a strong external impact, and at the same time, the buckle is easily buckled with one hand in a safe state when the driving is finished. It has the effect of being able to separate the chin strap.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

The above summary, as well as the detailed description of the preferred embodiments of the present application set forth below, will be better understood when read in conjunction with the accompanying drawings.
Preferred embodiments are shown in the drawings for the purpose of illustrating the present invention.
However, it should be understood that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a view for explaining a helmet including a buckle for a conventional helmet chinstrap;
2 is a view for explaining a helmet including a buckle for a helmet chinstrap according to an embodiment of the present invention;
3 is a view for explaining the configuration of a buckle for a helmet chinstrap according to an embodiment of the present invention;
4 is a view for explaining a first axis and a second axis of a buckle for a helmet chinstrap according to an embodiment of the present invention;
5 is a view for explaining a chassis portion of a buckle for a helmet chinstrap according to an embodiment of the present invention;
6 is a view for explaining an inlet, an outlet, and an inner space of a chassis portion of a buckle for a helmet chinstrap according to an embodiment of the present invention;
7 is a view for explaining how an external force is transmitted from a lever part of a buckle for a helmet chinstrap according to an embodiment of the present invention to a buckle;
8 is a view for explaining a chin strap stopper provided on a chin strap of a helmet according to an embodiment of the present invention;
9 is a view for explaining a preset rotation angle range of a lever part of a buckle for a helmet chinstrap according to an embodiment of the present invention;
10 to 13 are views for explaining an operating state of a buckle for a helmet chinstrap according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention in which the object of the present invention can be realized in detail will be described with reference to the accompanying drawings.

In describing the present embodiment, the same name and the same reference numeral are used for the same configuration, and additional description thereof will be omitted.

1 is a view for explaining a helmet including a buckle for a conventional helmet chin strap, FIG. 2 is a view for explaining a helmet including a buckle for a helmet chin strap according to an embodiment of the present invention, and FIG. A view for explaining the configuration of a buckle for a helmet chin strap according to an embodiment, and FIG. 4 is a view for explaining a first axis and a second axis of a buckle for a helmet chin strap according to an embodiment of the present invention. FIG. This is a view for explaining the chassis portion of the helmet chinstrap buckle according to an embodiment of the present invention, and FIG. 6 is a view for explaining the inlet, outlet, and inner space of the chassis portion of the helmet chinstrap buckle according to an embodiment of the present invention. 7 is a view for explaining how an external force is transmitted from the lever part of the buckle for a helmet chin strap to the buckle according to an embodiment of the present invention, and FIG. 9 is a view for explaining the provided stopper, and FIG. 9 is a view for explaining a preset rotation angle range of the lever part of the helmet chin strap buckle according to one embodiment of the present invention, and FIGS. 10 to 13 are one embodiment of the present invention. It is a drawing for explaining the operating state of the buckle for the helmet chin strap according to.

First, the helmet used to protect the user's head when riding a two-wheeled vehicle, including a bicycle, motorcycle, kickboard, and electric kickboard, is provided so that the user can tighten the chin strap when wearing the helmet, and pull the chin strap in one direction to move It may include a buckle that is provided to be fixed.

For example, as shown in FIG. 1, a short strap with a buckle at the end is formed on one side of the helmet, and a long chin strap fixed to the buckle is provided on the other side of the helmet. It is a structure that is pulled in and comes out to the withdrawal point located on the other side of the buckle.

However, the conventional helmet as shown in FIG. 1 rotates the lever in the downward direction (1), that is, from the pull-out point of the buckle toward the pull-in point, so that the catcher interlocked with the lever is spaced apart from the chin strap.

In this state, the buckle and the chin strap are completely separated and the helmet can be removed from the user's head only when the user holds the buckle and transmits an external force in the direction (2) outward based on the buckle.

In summary, a conventional helmet has a configuration in which one hand holds a lever and rotates to keep the catcher open, while the other hand holds the buckle and transmits an external force so that the helmet can be removed from the user's head.

That is, there is an inconvenience that both hands are required to release the buckle even in a safe state where the driving is finished.

Unlike the above-described conventional helmet, the helmet 10 according to an embodiment of the present invention is provided with a chin strap 100 and may include a helmet chin strap buckle 200 to be described later.

Here, the chinstrap 100 may be engaged with the catcher portion 240 to be described later in stages by providing a gear mountain to fasten to the helmet chinstrap buckle 200 to be described later.

Specifically, by the catcher portion 240 elastically supported by the elastic portion 250 provided on the chassis portion 220 of the helmet chinstrap buckle 200 for a helmet chinstrap, which will be described later, the gear mountain of the chinstrap 100 is moved by the catcher portion 240. and occlusion elastically and step by step.

In addition, a chinstrap stopper 101 is provided on one side of the chinstrap 100, and the lead-in length of the helmet chinstrap buckle 200 may be set in advance.

Since the catcher part 240, which will be described later, has a fixed gear formed in a shape corresponding to the gear mountain of the chinstrap 100 described above, once the fixed gear of the catcher part 240 mates with the gear mountain, the gear is driven by the fixed gear of the catcher part. The mount is restrained to prevent movement of the chinstrap 100, so that the chinstrap 100 and the buckle 200 are firmly bound.

Here, if the gear mountain of the chinstrap 100 can mate with the fixed gear, its shape, material, etc. may vary, and it will be natural that the scope of the present invention is not limited due to this.

In this way, the user can adjust the length of the chinstrap 100 by entering the chinstrap 100 as much as desired.

As shown in FIGS. 2 to 4, the buckle 200 for a helmet chinstrap included in the helmet 10 according to an embodiment of the present invention largely includes a chassis part 220, a catch part 240, a lever A portion 260 may be included.

First, an internal space 221 is formed in the chassis unit 220, and the chinstrap 100 fixed to the helmet 10 is inserted into the inlet 224 formed on one side of the chassis unit 220 to move the chassis unit 220 to the other side. It may be drawn out through the outlet 226 formed in, or may be provided so as to be retracted back into the inlet 224.

In other words, the chassis unit 220 has an inlet 224 and an outlet 226 provided at both ends, and an internal space 221 connecting the inlet 224 and the outlet 226 is provided, so that the buckle 200 The chinstrap 100 can move inside.

The structure of the chassis unit 220 described above with reference to FIGS. 5 and 6 will be described in detail.

As described above, the chassis unit 220 may have an outlet 226, an inlet 224, and an inner space 221 forming a movement path of the chinstrap 100.

In other words, the outlet 226 and the inlet 224 formed at both ends of the chassis unit 220 communicate with each other to form an internal space 221, thereby forming a movement path for the chinstrap 100.

At this time, the chassis unit 220 may have a 'c' shape with one surface completely open based on the internal space 221, and the lever unit 260 and the catch unit 240 may be disposed in the open area.

At this time, the first through hole 222 is symmetrically formed on both side surfaces of the chassis unit 220 to form the first shaft A1, and the catch unit 240 may be connected thereto.

In addition, the second through hole 223 is also symmetrically formed on both side surfaces of the chassis part 220 so as to be parallel to the first through hole 222 to form the second shaft A2, and the lever part 260 can be connected thereto. .

For example, referring to the cross-sectional view shown in FIG. 6 , in the chassis unit 220, the direction toward the inlet 224 and the outlet 226 based on the aforementioned internal space 221 is the longitudinal direction of the chassis unit 220. , the first through hole 222 may be spaced apart from the inner space 221 by a predetermined distance in a direction perpendicular to the longitudinal direction of the chassis unit 220 to form the first through hole 222 .

Therefore, it is possible to secure a space in which the catcher 240 can rotate.

The second through holes 223 are spaced apart from each other by a predetermined distance in the inner space 221 in a direction perpendicular to the longitudinal direction of the chassis unit 220 and parallel to the first through holes 222, so that the lever unit A space in which the 260 and the catcher 240 are rotated in opposite directions may be provided.

The chassis unit 220 having the configuration described above may further include a first cutout area 227 and a second cutout area 228 .

The first cutout area 227 is an area cut between the first through hole 222 and the second through hole 223 of both sides of the chassis unit 220, and is provided on both sides of the chassis unit 220 to be symmetrical to each other. can

Therefore, it is possible to distinguish one side of the chassis unit 220 from one side on which the first through hole 222 is formed and the other side on which the second through hole 223 is formed through the first incision area 227 . (220) The weight of itself can be reduced.

In addition, the second incision area 228 is formed on both sides of the chassis unit 220 and provided close to the closed one side of the chassis unit 220 and the above-described outlet 226 based on the internal space 221. It can be.

In this case, the second incision area 228 may be provided to be inclined upward in a direction from the inlet 224 toward the outlet 226 .

In addition, since the lever stopper 229 is provided at one side of the second through hole 223 and the first through hole 222, the maximum rotation range of the lever unit 260 can be limited.

The catcher unit 240 may be provided to be rotatable about the first axis A1 on the chassis unit 220 described above.

In addition, the catcher unit 240 prevents the chinstrap 100 inserted into the above-described chassis unit 220 from retreating from the outlet 226 to the inlet 224 or moving forward from the inlet 224 to the outlet 226. can be limited

At this time, the catcher part 240 rotates about the first axis A1 but can be supported elastically by the elastic part 250 .

In addition, the catcher unit 240 may engage with the chinstrap 100 elastically and step by step by providing a fixed gear opposite to the gear mountain of the chinstrap 100 moving inside the chassis unit 220 .

The lever part 260 can transmit power to the catcher part 240 by being engaged with the catcher part 240, and is rotatable around a second axis spaced apart from the first axis A1 of the catcher part 240 described above. can be provided.

In this case, the second axis A2 spaced apart from the first axis A1 may be parallel to each other.

Also, like the catcher 240 , the lever part 260 is elastically supported by the elastic part 250 and can be engaged with the catcher 240 .

At this time, unlike the conventional buckle 200, the lever part 260 rotates in the opposite direction to the catcher part 240 when the chinstrap 100 is moved in the direction of the inlet 224, and the catcher part 240 The catcher part 240 may be spaced apart from the chinstrap 100 by transmitting power to the chinstrap 100 .

In other words, when an external force is applied to rotate the lever unit 260 in the direction from the inlet 224 of the chassis unit 220 toward the outlet 226, the lever unit 260 rotates while the catcher unit 240 moves the lever unit ( 260) and rotates in opposite directions, and the catcher part 240 receives power from the lever part 260 so that the chinstrap 100 and the occlusion can be released.

In other words, the lever unit 260 rotates on the basis of the first axis A1 and rotates along the direction in which the chinstrap 100 enters the chassis unit 220 and moves forward to transmit power to the catcher unit 240. The catcher part 240 is provided so that the lever part 260 can rotate by receiving power from the lever part 260.

In summary, as shown in FIG. 7 , the lever part 260 separates the catcher part 240 from the chinstrap 100 when an external force is transmitted so as to pivot in the direction from the inlet 224 to the outlet 226 and , When the shaft rotation is restricted, the above-described external force is transmitted to the chassis unit 220 while maintaining the separation between the catcher unit 240 and the chinstrap 100, so that the chinstrap 100 fixed to the helmet 10 220) can be removed.

At this time, as described above, referring to FIG. 8, on both sides of the chinstrap 100, a chinstrap stopper 101 protruding outward with respect to the center of the chinstrap 100 may be provided, and the chinstrap stopper 101 is a chinstrap It may be formed symmetrically with respect to (100).

Also, referring to the above drawings, the helmet chinstrap buckle 200 having the configuration described above further includes a gripping portion 280, so that the user grips the gripping portion 280 connected to the lever portion 260 It may be provided to easily transmit external force to the lever unit 260 .

That is, through the structure as described above, the chinstrap 100 can be completely released from the buckle 200 simply with only one hand.

On the other hand, the buckle 200 for the helmet chinstrap according to an embodiment of the present invention is a catcher until the chinstrap 100 can be easily released from the buckle 200 as well as rotated in a preset angle range as described above. It is possible to increase stability while maintaining the locked state of the part 240 and the chin strap 100 .

Referring to FIGS. 9 to 13, the buckle 200 for the chin strap of the helmet of the present invention having both effects as described above will be described in detail.

The lever part 260 is provided so that the catcher part 240 and the chinstrap 100 are maintained in a locked state until the axis pivots in a predetermined angular range from the inlet 224 toward the outlet 226 when an external force is transmitted. , it is possible to prevent the situation in which the locked state is released by an unintended external force.

Specifically, when an external force is transmitted, the lever unit 260 moves from the inlet 224 to the outlet on the basis of a virtual plane including the first axis A1 and the second axis A2, as shown in FIG. 9 . The catcher 240 and the chinstrap 100 may be provided to remain locked until they pivot at a preset angle toward 226 .

For example, in the first step, the lever unit 260 may maintain the buckle 200 for the helmet chin strap of the present invention in a locked state until section A based on the above-described virtual plane.

Here, section A may be 0 degrees to 20 degrees.

As a second step, the lever unit 260 forms a safe state section, which is a step in which the locked state is changed to the open state during section B, to prevent a situation in which the buckle 200 and the chinstrap 100 are unlocked due to external force or user's mistake. be able to prevent

Here, section B, that is, the above-described preset angle may be 21 degrees to 62 degrees.

In the last step, when the lever part 260 is located in section C, the locking state can be released while the catcher part 240 is separated from the chinstrap 100.

Here, section C may be 63 degrees to 80 degrees.

In summary, the lever unit 260 may be provided to rotate the sum of sections A, B, and C (eg, a total of 80 degrees), and section B, which is the section between A and C, that is, the buckle at a preset angle ( 200) and the chin strap 100 can be prevented from being unlocked.

To this end, the lever unit 260 may include a plate 262 , a lever 264 , and a drive gear 266 .

The plate may be returned to its initial position by the elastic part 250 while the lever part 260 pivots along the second axis A2.

The lever 264 may be provided on the plate 262 to protrude toward the inlet 224 of the chassis 220 at the initial position described above.

Here, since the plate 262 is provided in a circular shape without corners, interference during rotation can be minimized.

At this time, the drive gear 266 may rotate the catcher 240 by lifting the driven gear 242 provided on the catcher 240 to engage with the lever 260 .

In other words, the drive gear 266 is meshed with the driven gear 242 to transfer the external force transmitted by the user to the catcher 240 .

For example, the drive gear 266 may include a plurality of gears, and may specifically include a first gear 266a and a second gear 266b.

Here, the first gear 266a forms a predetermined angle with the lever 264 of the lever unit 260 and protrudes on the plate 262 in a direction opposite to the chinstrap 100 inserted into the chassis unit 220. It can be.

In addition, the second gear 266b also protrudes on the plate 262 and is spaced apart from the first gear 266a by a predetermined distance to form a space between which the driven gear 242 of the catcher 240 can be retracted. can be provided.

At this time, as shown in FIG. 9, until the lever unit 260 rotates in a preset angular range, the driven gear ( 242, it is possible to maintain the locked state of the buckle 200 and the chinstrap 100.

That is, in the helmet chin strap buckle 200 according to an embodiment of the present invention, even if the lever unit 260 is rotated by an unintended external force, the lever unit ( The drive gear 266 of the 260 and the driven gear 242 of the catcher 240 may be provided so as not to mesh with each other.

On the other hand, when the user applies an external force to release the buckle 200 and the chinstrap 100 in a safe state after driving, that is, when the lever 264 rotates beyond a preset angle range, as shown in FIG. As described above, when at least one of the above-described first gear 266a and second gear 266b is engaged with the driven gear 242, the locked state may be released.

Specifically, the driven gear 242 may be formed of a fixed gear provided to engage with the chinstrap 100 and a plurality of gear teeth that protrude toward the lever unit 260 while being spaced apart from the fixed gear.

For example, the driven gear 242 may include a third gear formed on one side of a fixed gear provided to engage with the chinstrap 100 and a fourth gear spaced apart from the third gear.

Accordingly, the driven gear 242 may be provided so that the locked state can be released while the third gear described above is inserted between the first gear 266a and the second gear 266b, which are the driving gears 266 .

Compared to conventional buckles that can implement only 20 to 30 degrees of rotation angle, by extending the safe rotation range of the lever, the helmet while driving due to a large external impact or user's mistake, which is a limitation that has not been solved due to the limitations of the conventional buckle structure This separation accident can be significantly reduced.

Therefore, the buckle 200 for the helmet chin strap and the helmet 10 including the buckle 200 of the present invention maintain the locking state until the catcher 240 and the chin strap 100 rotate in a predetermined angular range as described above. There is an effect that stability is increased by expanding the safety angle range, and at the same time, the chinstrap 100 can be easily released from the buckle 200 with only one hand in a safe state after driving.

Preferred embodiments according to the invention have been looked at, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope is obvious to those skilled in the art. will be.

Therefore, the embodiments described above are to be regarded as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may vary within the scope of the appended claims and their equivalents.

10: helmet
100: chin strap
101: chin strap stopper
200: buckle
220: chassis part
221: inner space
222: first through hole
223: second through hole
224: inlet
226: outlet
227: first incision area
228: second incision area
229: lever stopper
240: catcher unit
242: driven gear
250: elastic part
260: lever part
261: safe space
262: plate
264: lever
266: driving gear
266a: first gear
266b: second gear
280: gripping unit
A1: 1st axis
A2: 2nd axis

Claims (10)

A buckle provided so that the user can tighten the chinstrap when wearing the helmet and fixed by pulling the chinstrap in one direction,
a chassis portion having an internal space so that the chinstrap fixed to the helmet can be inserted through one inlet and drawn out through the other inlet or retracted through the inlet; a catcher provided on the chassis unit to be rotatable around a first axis and restricting movement of the chinstrap inserted into the chassis unit from the outlet to the inlet; And a lever portion rotatably provided about a second axis spaced apart from the first axis and engaging with the catcher portion to transmit power to the catcher portion,
The lever part,
When the chinstrap is moved in the direction of the inlet, the catcher is separated from the chinstrap while rotating in an opposite direction to the catcher,
When an external force is transmitted, the catcher part is separated from the chinstrap by pivoting in a direction from the inlet toward the outlet, and from the inlet toward the outlet with a virtual plane including the first axis and the second axis as a reference. The catcher part and the chin strap are maintained in a locked state until pivoting at a predetermined angle,
When pivot rotation is restricted, the external force is transmitted to the chassis unit while maintaining a distance between the catcher unit and the chinstrap, so that the chassis unit is separated from the chinstrap fixed to the helmet.
a plate provided to pivot along the second axis and return to an initial position; a lever protruding toward the inlet of the chassis unit at the initial position; And a first gear protruding in a direction opposite to the chinstrap inserted into the chassis part and forming a predetermined angle with the lever to rotate the catcher by lifting the driven gear provided on the catcher and the first gear Including a drive gear including a second gear protruding at a predetermined distance apart,
The locked state is maintained by placing the driven gear in a safety space between the lever and the first gear until it rotates within a preset angular range, but when the rotation exceeds the preset angular range, the third gear is rotated. At least one of the first gear and the second gear is engaged with the driven gear to release the locked state,
The driven gear,
A third gear formed on one side of a fixed gear provided in the catcher to engage with the chinstrap and a fourth gear spaced apart from the third gear, wherein the third gear is between the first gear and the second gear. Characterized in that the lock state is released as it is retracted,
Buckle for helmet chin strap.
delete delete According to claim 1,
The predetermined angle is,
Characterized in that it is 21 degrees to 62 degrees,
Buckle for helmet chin strap.
delete delete delete delete delete A helmet having a chin strap on one side and a buckle for the helmet chin strap on the other side,
Including the buckle for the helmet chin strap of claim 1 or 4,
A helmet that includes a buckle for a helmet chinstrap.

Images