KR101791655B1 - Buckle for helmet - Google Patents

Abstract

The helmet buckle 100 according to the present invention includes a band portion 300 having a first concave portion 340 having at least one concave and convex portion formed thereon, A base portion 400 which is slidably coupled to one side of the base portion 400 so as to be rotatable on one side of the base portion 400, The second concave-convex part 540 including the concave-convex part 540 is formed on the other side of the base part 400 and the second convex part 540 is pressed toward the band part 300, The second concave-convex part 540 is moved in the direction away from the band part 300 so that the lock part 500 is moved in the direction of the lock part 500, And an actuating part 600 for rotating the actuating part.

Description

Buckle for helmet

The present invention relates to a helmet buckle.

The buckle for a helmet is used for a sports helmet including a motorcycle helmet and a ski helmet, and is a device adopted for tightening / separating or adjusting the length of a band provided on the helmet. At this time, the helmet buckle must be firmly fixed when fastening the band, and should be easy to be operated by the user when tightening / separating or adjusting the length.

As disclosed in the following prior art documents, there is a prior art "length adjusting buckle device" invention. Such a conventional technique discloses a configuration in which the lever 230 is used to fasten / separate or adjust the length of the band strap 110. Specifically, when the lever 230 is pulled in a direction opposite to the entry direction of the band strap 110, the lever 230 and the catcher 220 rotate together with the shaft 230, 221 are separated from the gear mount 111 of the band strap 110, the engagement between the catcher 220 and the band strap 110 is released.

However, since the conventional art is a pull type pulling lever 230, it is difficult for a user to operate a motorcycle while performing a sport such as a driving a motorcycle.

KR 10-1430435 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a helmet buckle capable of releasing engagement between a lock portion and a band portion by pushing an operating portion with a push type to rotate the lock portion do.

The helmet buckle according to an embodiment of the present invention includes a band portion having a first concavo-convex portion including at least one concavo-convex portion, a base portion for guiding the band portion to slide upon entry or retraction of the band portion, And a second concavo-convex portion including at least one concavo-convex portion corresponding to the first concavo-convex portion formed on one surface of the base portion facing the band portion, wherein the second concavo-convex portion is pressed in the band portion direction, And an operating portion that is coupled to the other side so as to be movable in the direction of the lock portion and moves in the direction of the lock portion to press the lock portion, the second uneven portion rotates the lock portion in a direction away from the band portion.

In the helmet buckle according to the embodiment of the present invention, a first inclined surface is formed at one end of the locking portion facing the actuating portion, and a second inclined surface is formed at one end of the actuating portion facing the locking portion , And when the operating portion is moved in the direction of the lock portion, the lock portion is rotated while the second inclined surface is digging into the one surface of the lock portion along the first inclined surface.

Further, in the helmet buckle according to the embodiment of the present invention, when the band portion enters the base portion among the concave and convex portions of the first concave-convex portion, the first concave portion that firstly meets the concave- The width of the unevenness of the second concavo-convex portion is narrower than the width of the first iron region which firstly meets the concavo-convex of the first concavo-convex portion when the band portion enters the base portion, When entering the base portion, has a width equal to or wider than a width of the second iron region which is secondly in contact with the irregularities of the first concavity and convexity, or is wider than the second iron region.

The helmet buckle according to an embodiment of the present invention may further include elastic means provided between the base portion and the lock portion to provide an elastic force so that the second concavo-convex portion is pressed toward the band portion.

Further, in the helmet buckle according to the embodiment of the present invention, the elastic means is a torsion spring, one end of the torsion spring is hooked to the elastic support portion of the base portion, and the other end of the torsion spring is hooked to the lock portion.

Further, in the helmet buckle according to the embodiment of the present invention, the base portion includes a bottom portion extending in a plate shape corresponding to the band portion, and a pair of side portions extending from both sides of the bottom portion so as to face each other, And a partition wall which is fastened to the other side so that the actuating part is movable.

Further, in the helmet buckle according to the embodiment of the present invention, a first fastening hole is formed on one side of the partition wall, a second fastening hole is formed in the lock portion at a position corresponding to the first fastening hole, A first fastening pin is inserted into the first fastening hole and the second fastening hole.

Further, in the helmet buckle according to the embodiment of the present invention, a third fastening hole is formed on the other side of the partition wall, a fourth fastening hole is formed in the operation portion at a position corresponding to the third fastening hole, The first fastening pin is inserted into the third fastening hole and the fourth fastening hole and the one directional width of the fourth fastening hole is larger than the one direction width of the second fastening pin .

Further, in the helmet buckle according to the embodiment of the present invention, a guide groove recessed toward the lock portion is formed at the other end of the partition wall, and the operation portion is inserted into the guide groove, A guide projection is formed.

Further, in the helmet buckle according to the embodiment of the present invention, the base portion may further include a guide portion extending from a distal end of the bottom portion into which the band portion enters, and the guide portion is formed so as to be distanced from the distal end of the bottom portion, Extends in a direction opposite to a direction extending from the bottom portion.

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

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, since the lock between the lock portion and the band portion can be released by pivoting the lock portion by pushing the operation portion in a push type, there is an advantage that the user can easily operate the motorcycle while performing sports such as driving a motorcycle or skiing.

1 is a perspective view of a helmet buckle according to an embodiment of the present invention,
2 is an exploded perspective view of a helmet buckle according to an embodiment of the present invention,
3 is a plan view of a helmet buckle according to an embodiment of the present invention,
4A and 4B are cross-sectional views of a helmet buckle according to an embodiment of the present invention,
FIGS. 5A to 5C are plan views showing the first fastening process of the helmet buckle according to the embodiment of the present invention,
6 to 10 are cross-sectional views illustrating the operation of the helmet buckle according to the embodiment of the present invention,
11 is a side view of a helmet buckle according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "first "," second ", and the like are used to distinguish one element from another element, and the element is not limited thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

Basically, the helmet buckle according to the embodiment of the present invention is used in a sports helmet including a motorcycle helmet and a ski helmet, and is a device used for fastening / separating or adjusting the length of a band provided in the helmet.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a helmet buckle according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a helmet buckle according to an embodiment of the present invention.

1 and 2, a helmet buckle 100 according to an embodiment of the present invention includes a band part 300 having a first concavo-convex part 340 including at least one concavo-convex part, a band part 300, A first concavo-convex part 340 coupled to one side of the base part 400 so as to be rotatable and having a first concavo-convex part 340 formed on one surface thereof facing the band part 300, A lock part 500 formed with a second concavo-convex part 540 including at least one concavo-convex to correspond to the band part 300 and a second concavo-convex part 540 being pressed toward the band part 300, The second concavo-convex part 540 is moved in a direction away from the band part 300 so as to be movable in the direction of the lock part 500, And an operating part 600 for rotating the part 500.

The band part 300 is fastened to the lock part 500 and may include a body part 310, a mounting part 320 and a third fastening pin 330 as a whole. The main body 310 is formed in a curved shape and is guided or retracted while being guided by the base 400. The main body 310 includes an entrance portion 313, an extension portion 315, a stop portion 317, . At this time, the entry portion 313 is disposed at one end of the body portion 310 and is the portion that first enters the base portion 400. [ In addition, the entrance portion 313 can be rounded at both corner portions so that the base portion 400 can easily enter. The extended portion 315 extends from the entry portion 313 in the direction of the stop 317 and the first uneven portion 340 is formed on one surface (upper surface) facing the lock portion 500. Here, the first concave-convex portion 340 includes at least one concavo-convex portion. That is, in the first concave-convex portion 340, the combination of the concave region 341 and the convex region 343 is continuously arranged. At this time, the first concave-convex part 340 can be fastened to the second concave-convex part 540 of the lock part 500. On the other hand, the stopper 317 extends obliquely from the extending portion 315, and can restrict entry of the base portion 400 into the band portion 300. Specifically, when the extended portion 315 enters the base portion 400, when the inclined portion of the stopper portion 317 contacts the elastic supporting portion 440 of the base portion 400, The entry of the band part 300 into the band part 300 is limited. The mounting portion 320 is connected to a band or a belt to be mounted on the helmet and can be coupled to the stop 317 of the main body 310 through the third fixing pin 330 so as to be rotatable.

The base part 400 guides the band part 300 when the band part 300 enters or retracts and supports the locking part 500 and the operation part 600. Here, the base portion 400 may include a bottom portion 410 and a partition wall 420. At this time, the bottom portion 410 may extend in a plate shape corresponding to the band portion 300, and the partition wall 420 may extend so as to face one pair from both sides (the longitudinal edges) of the bottom portion 410. The lock portion 500 is rotatably fastened to one side of the partition 420 and the operation portion 600 is provided on the other side of the partition 420 opposite to the direction in which the band portion 300 enters. So as to be movable. More specifically, a first fastening hole 421 is formed at one side of the partition wall 420, a second fastening hole 521 is formed at a position corresponding to the first fastening hole 421 in the lock portion 500 And the first fastening pin 423 is inserted into the first fastening hole 421 and the second fastening hole 521. Accordingly, the lock portion 500 can be coupled to one side of the partition 420 to be rotatable about the first fastening pin 423. A third fastening hole 425 is formed on the other side of the partition wall 420. A fourth fastening hole 625 is formed in the operating part 600 at a position corresponding to the third fastening hole 425, The second fastening pin 427 is inserted into the third fastening hole 425 and the fourth fastening hole 625. The diameter of the third fastening hole 425 may correspond to the diameter of the second fastening pin 427. However, as shown in FIGS. 3 to 4, the diameter of the third fastening hole 425 The width W4 may be larger than the diameter D2 of the second fastening pin 427. [ When the unidirectional width W4 of the fourth fastening hole 625 is larger than the diameter D2 of the second fastening pin 427 as described above, ) Of the partition wall 420 so as to be linearly movable in the direction of the partition wall 420. 1, the other end of the partition wall 420 (the end opposite to the direction in which the band portion 300 enters) is depressed in the direction of the lock portion 500 (the direction in which the band portion 300 enters) A guide groove 429 is formed and a guide protrusion 629 inserted into the guide groove 429 and linearly moving along the guide groove 429 may be formed in the actuating part 600. As a result, when the operating part 600 linearly moves toward the lock part 500 with respect to the base part 400, the second fastening pin 427 inserted into the fourth fastening hole 625 and the guide protrusion 629 It can be guided by the guide groove 429 to be inserted.

In addition, the base part 400 is connected to a band, a belt, or the like and is mounted on the helmet. For this purpose, a connection part 430 to which a band or a belt is connected may be formed. The connecting portion 430 may extend from the other end of the barrier rib 420 (the opposite end of the band portion 300 in the direction in which the band portion 300 enters) away from the actuating portion 600 (downward). In addition, the base portion 400 may be formed with an elastic support portion 440 having one end of the elastic means 510 for providing an elastic force to the lock portion 500. Here, the elastic supporting portion 440 may be formed to extend to connect one end of the pair of partitions 420 (the end in the direction in which the band part 300 enters).

The locking part 500 serves to fix the band part 300 or allow the band part 300 to enter or retract. As described above, the lock portion 500 is fastened to one side of the base portion 400 via the first fastening pin 423 so as to be rotatable. 4A), the locking part 500 is disposed to be spaced apart from the bottom part 410 of the base part 400 (see FIG. 4A), and the space between the bottom part 410 of the base part 400 and the locking part 500 The band portion 300 can enter or retreat. The lock portion 500 is formed with a second concavo-convex portion 540 corresponding to the first concavo-convex portion 340 of the band portion 300 on one surface (lower surface) facing the band portion 300. Here, the second concave-convex portion 540 includes at least one concavo-convex portion. That is, as shown in FIG. 2, the combination of the concave region 541 and the convex region 543 is continuously arranged in the second concave-convex portion 540. 4A, an elastic force acts on the lock part 500 in the direction of the band part 300 by the elastic means 510 about the first fastening pin 423. Therefore, The second concave-convex part 540 is pressed toward the band part 300 and can be fastened to the first concave part 340 of the band part 300. On the other hand, the iron area 543 of the second concave-convex part 540 and the iron area 343 of the first concave-convex part 340 may be inclined to correspond to each other. When the band portion 300 enters the base portion 400, the lock portion 500 rotates the first fastening pin 423 at a predetermined angle with respect to the axis, and the band portion 300 moves toward the inside of the base portion 400 The locking part 500 does not pivot about the first fastening pin 423 when the band part 300 is retracted from the base part 400 so that the first concave part 340 and the second convex- The band portion 300 can not move to the outside of the base portion 400 while maintaining the engaged state of the band portion 540. The band portion 300 is rotated by using the operation portion 600 to release the state in which the first concave portion 340 and the second concave portion 540 are fastened, , The details of which will be described later.

An elastic means 510 may be provided between the base portion 400 and the lock portion 500 to provide an elastic force so that the second concave-convex portion 540 is pressed toward the band portion 300. Here, the elastic means 510 may be a torsion spring 510, for example. At this time, the torsion spring 510 can be disposed in the depression 530 (see FIG. 2) formed by being embedded in the side surface of the lock portion 500, which is inserted into the first coupling pin 423 and faces the partition wall 420 And the other end may be caught at one side of the depression 530 of the lock part 500. [ Therefore, the torsion spring 510 can provide an elastic force to rotate the locking part 500 so that the second concave-convex part 540 is pressed toward the band part 300. [

5A to 5C are plan views showing an initial fastening process of the helmet buckle according to the embodiment of the present invention. As shown in FIGS. 5A to 5C, when the band portion 300 enters the base portion 400 among the concave and convex portions of the first concave portion 340, the first concave portion of the concave portion of the second concave / The first concave region 342 is formed so as to be opposed to the first concave portion of the first concave and convex portion 340 when the band portion 300 enters the base portion 400, Is narrower than the first convex region 544 (W1 < W2). When the band portion 300 enters the base portion 400 of the concave and convex portions of the second concave and convex portion 540, the first concave and convex portion 340 of the first concave and convex portion 340 intersects the concave and convex of the first concave and convex portion 340 for the second time (W1 = W3) or wider than the second iron region 545 (W1 > W3) with respect to the second convex region 545. That is, the first yaw area 342 disposed at the first end of the first concave-convex part 340 is narrower than the first iron area 544 disposed at the most end of the second concave-convex part 540 (W1 < (W1 = W3) or wider than the second iron region 545 (W1 > W3) than the second iron region 545 disposed after the first iron region 544. 5B), the second iron region 545 is fastened to the first yaw region 342 (Fig. 5B), and the first iron region 544 is not fastened to the first yaw region 342 5c). 5B). Since at least two yaw areas and two iron areas are fastened (see FIG. 5C), the band part 300 and the lock part 500 are not fastened with only one yaw area and one iron area , It is possible to realize a firm fastening between the band portion 300 and the lock portion 500. At this time, when the first yaw area 342 is narrower than the first iron area 544 (W1 < W2), the width is equal to the second iron area 545 (W1 = W3) (W1 > W3) than that of the first electrode 545, various configurations may be employed. 5A, a protrusion 342a may protrude from both ends of the first yaw area 342 in the width direction so as to restrict the width W1 of the first yaw area 342. In this case, The width W1 of the protrusion 342a is narrower than the width W2 of the first iron region 544 and equal to the width W3 of the second iron region 545, 545, respectively. It should be noted, however, that this is for illustrative purposes only and the scope of the present invention is not limited to such a configuration.

The actuating part 600 (see FIG. 1) rotates the locking part 500 to release the engagement between the first concave-convex part 340 and the second concave-convex part 540. The actuating part 600 is fastened to the other side of the base part 400 so as to move linearly in the direction of the lock part 500 through the second fastening pin 427 and the guide protrusion 629 or the like. 4A). Since the actuating part 600 is disposed to be spaced apart from the bottom part 410 of the base part 400 (see FIG. 4A), the operation part 600 can be moved through a space between the bottom part 410 of the base part 400 and the actuating part 600 The band portion 300 can enter or retreat. 4B, when the actuating part 600 moves in the direction of the lock part 500 and presses the lock part 500, the second concave and convex part 540 of the lock part 500 moves in the direction of the band part The locking portion 500 can be rotated in a direction away from the locking portion 500. Specifically, the operating portion 600 and the lock portion 500 can be disposed on substantially the same plane. A first inclined surface 550 is formed at one end of the lock portion 500 facing the actuating portion 600 and a first inclined surface 550 is formed at one end of the actuating portion 600 facing the lock portion 500. [ A second inclined surface 650 may be formed. The first inclined surface 550 of the lock part 500 can be seen in the direction of the bottom part 410 of the base part 400 and the second inclined surface 650 of the actuating part 600 can be seen in the base part 400, As shown in FIG. When the user presses the operation part 600 and the operation part 600 is linearly moved in the direction of the lock part 500 the second inclined surface 650 of the operation part 600 is moved The lock portion 500 can be pivoted in a direction away from the band portion 300 while digging into one surface of the lock portion 500 (the lower surface on which the second concave and convex portion 540 is formed) along one inclined surface 550. When the lock portion 500 is rotated in the direction away from the band portion 300, the first concave portion 340 of the band portion 300 and the second concave portion 540 of the lock portion 500 are separated from each other, The band portion 300 can be freely moved. 4A, when the user presses the actuating part 600, the locking part 500 is moved toward the band part 300 by the elastic force applied to the locking part 500 The actuating part 600 moves linearly in the direction opposite to the lock part 500 while the first inclined surface 550 of the lock part 500 presses the second inclined surface 650 of the actuating part 600, . The first concave and convex portions 340 of the band portion 300 and the second concave and convex portions 540 of the lock portion 500 are fixed again to the band portion 300, So that the band portion 300 can be fixed.

As described above, the helmet buckle 100 according to the present embodiment employs a push type in which the user presses the operation part 600 to easily release the fastening between the lock part 500 and the band part 300 Therefore, there is an advantage that the user can easily operate the motorcycle while performing sports such as driving or skiing.

FIGS. 6 to 10 are cross-sectional views illustrating the operation of the helmet buckle according to the embodiment of the present invention, and the operation of the helmet buckle 100 according to the embodiment of the present invention will be described.

First, as shown in FIGS. 6 to 8, the band part 300 enters the base part 400. The entrance portion 313 of the band portion 300 is inserted into the space between the bottom portion 410 of the base portion 400 and the lock portion 500 through the space between the bottom portion 410 of the base portion 400 and the elastic support portion 440 The first concave-convex portion 340 formed on the body portion 310 of the band portion 300 is inserted into the space between the bottom portion 410 of the space and the base portion 400 and the operation portion 600, The band portion 300 moves to the inside of the base portion 400 while being fastened to the second concave / At this time, as the first concave-convex part 340 of the band part 300 passes the second concave-convex part 540 of the lock part 500, the lock part 500 rotates the first fastening pin 423 about the axis . More specifically, the lock portion 500 is rotated in a direction away from the band portion 300 (see FIG. 7), and rotated in the direction of the band portion 300 by the elastic force of the elastic means 510 Can be repeated.

Next, as shown in Figs. 9 to 10, the process of retracting the band portion 300 from the base portion 400 is shown. 9, when the actuating part 600 is pressed toward the lock part 500, the actuating part 600 moves linearly in the direction of the lock part 500, 2 inclined surface 650 is pinched along the first inclined surface 550 of the lock portion 500 into one surface of the lock portion 500 (the lower surface where the second concave-convex portion 540 is formed) Can be rotated in the direction away from the band part (300) about the first fastening pin (423). As described above, when the lock portion 500 is rotated, the engagement between the first concave portion 340 of the band portion 300 and the second concave portion 540 of the lock portion 500 can be released. 10, when the band part 300 is pulled, the band part 300 is separated from the space between the bottom part 410 of the base part 400 and the operation part 600 and the bottom part of the base part 400 410 and the locking portion 500 and through the space between the bottom portion 410 of the base portion 400 and the resilient supporting portion 440.

11 is a side view of a helmet buckle according to another embodiment of the present invention. As shown in FIG. 11, the helmet buckle 200 according to another embodiment of the present invention may include a guide portion 700 in the base portion 400. Here, the guide portion 700 extends from the end of the bottom portion 410 of the base portion 400 into which the band portion 300 enters. At this time, the guide part 700 extends in a direction opposite to the upward direction (upward direction) from the bottom part 410 as the partition wall 420 moves away from the end of the bottom part 410. That is, the guide portion 700 may extend from the distal end of the bottom portion 410 so as to be inclined downward. By providing the guide portion 700, the user can more easily enter the band portion 300 into the base portion 400.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is evident that it can be modified or improved.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100, 200: buckle for helmet 300: band part
310: main body 313:
315: extension part 317: stop part
320: mounting portion 330: third fastening pin
340: first irregular portion 341: irregular region of first irregular portion
342: first urine area 342a:
343: iron region of the first concave-convex portion 400:
410: bottom 420: partition wall
421: first fastening hole 423: first fastening pin
425: third fastening hole 427: second fastening pin
429: guide groove 430:
440: elastic support part 500: locking part
510: elastic means, torsion spring 521: second fastening hole
530: depression portion 540: second concave-convex portion
541: Needed area of the second concave-convex part 543: Iron area of the second concave-
544: first iron zone 545: second iron zone
550: first inclined plane 600:
625: Fourth fastening hole 629: Guide projection
650: second inclined plane 700: guide portion
W4: width of the fourth fastening hole D2: diameter of the second fastening pin
W1: width of the first yaw region W2: width of the first iron region
W3: Width of the secondary iron zone

Claims (10)

A band portion having a first concavo-convex portion including at least one concavo-convex portion;
A base portion for guiding the band portion to slide when the band portion is advanced or retreated;
A second concavo-convex portion coupled to one side of the base portion so as to be rotatable and having one or more concavo-convex portions corresponding to the first convexo-concave portion is formed on one surface of the base portion facing the band portion, ; And
An operating portion coupled to the other side of the base portion so as to be movable in the direction of the lock portion and configured to pivot the lock portion in a direction in which the second concave and convex portion moves away from the band portion when the lock portion is moved in the direction of the lock portion;
Lt; / RTI &gt;
The base unit includes:
A bottom portion extending in a plate shape corresponding to the band portion; And
A partition wall extending from the both sides of the bottom portion so as to face each other so that the locking portion is pivotally coupled to one side and the actuating portion is movable on the other side;
/ RTI &gt;
A third fastening hole is formed on the other side of the partition, a fourth fastening hole is formed in the operation portion at a position corresponding to the third fastening hole, and a second fastening hole is formed in the third fastening hole and the fourth fastening hole, A pin is inserted,
Wherein the one directional width of the fourth fastening hole is larger than the diameter of the second fastening pin so that the operating portion can move toward the lock portion with respect to the base portion.
The method according to claim 1,
A first inclined surface is formed at one end of the lock portion facing the operation portion,
A second inclined surface is formed at one end of the operating portion facing the lock portion,
Wherein when the operating portion is moved in the direction of the locking portion, the locking portion is rotated while the second inclined surface is dug into the one surface of the locking portion along the first inclined surface.
The method according to claim 1,
The first irregular portion of the irregularities of the first irregular portion first meeting the irregularities of the second irregular portion when the band portion enters the base portion,
The width of the concavo-convex portion of the second concavo-convex portion is narrower than that of the first concavo-convex portion of the first convexo-concave portion when the band portion enters the base portion,
A second helical groove having a width equal to or greater than a width of the second helical groove which is secondly in contact with the concave and the convexities of the first concave and convex portion when the band portion enters the base portion of the concavo- For buckle.
The method according to claim 1,
Elastic means provided between the base portion and the lock portion to provide an elastic force so that the second concavo-convex portion is pressed toward the band portion;
And a buckle for a helmet.
The method of claim 4,
The elastic means is a torsion spring,
One end of the torsion spring is hooked on the elastic support portion of the base portion,
And the other end of the torsion spring is engaged with the lock portion.
delete The method according to claim 1,
A first fastening hole is formed at one side of the partition, a second fastening hole is formed at a position corresponding to the first fastening hole in the lock portion, and a first fastening hole is formed in the first fastening hole and a second fastening hole A helmet buckle with a pin inserted.
delete The method according to claim 1,
A guide groove recessed toward the lock portion is formed at the other end of the partition wall,
And a guide protrusion inserted into the guide groove and moving along the guide groove is formed in the operation portion.
The method according to claim 1,
The base unit includes:
And a guide portion extending from an end of the bottom portion into which the band portion enters,
And the guide portion extends in a direction opposite to a direction in which the partition wall extends from the bottom portion as the end portion is farther from the end of the bottom portion.

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