Helmet buckles and helmets

Abstract

To provide a helmet buckle that prevents unintended unlocking without making the process of removing the band from the buckle excessively complicated. [Solution] The device comprises a base 21, a locking member 31 rotatably supported by a first support shaft 29 on the base 21 so as to be able to engage with the locking member 31 inserted between the locking member 35 and the bottom plate 22 from the band insertion direction, an operating base 41 rotatably supported on the base 21, and an operating member 51 rotatably supported on the operating base 41. The operating member 51 comprises a lifting piece 56 that rotates and lifts the locking member 31, and a pressing piece 58 that pushes the band 8 in the pulling direction. When the operating member 51 is rotated in the unlocking direction around the second support shaft 45, it rotates in the unlocking direction to lift the locking member 31 with the lifting piece 56, and presses the band 8 in the pulling direction with the pressing piece 58.

Claims

1. A helmet buckle for securing a band having a claw portion on its first surface, A base comprising a bottom plate and a pair of side plates, into which the band is inserted such that the second surface opposite to the first surface is in contact with the bottom plate, A locking member is provided with a locking portion that engages with the claw portion, and is rotatably supported on the base by a first support shaft so as to be able to engage with the claw portion of the band inserted between the locking portion and the bottom plate from the insertion direction of the band, An operating base is rotatably supported on the base by the first support shaft, The operating base includes an operating member that is rotatably supported by a second support shaft, The operating member includes a lifting piece that rotates the locking member around the second support shaft to lift it, When the operating member is rotated in the unlocking direction around the second support shaft, it rotates in the unlocking direction, lifting the locking member around the first support shaft with the lifting piece. Helmet buckle.

2. The operating member further includes a pressing piece that pushes the band in a pulling direction opposite to the insertion direction, and presses the band in the pulling direction with the pressing piece. A helmet buckle according to claim 1.

3. The operating member is provided with a push-up projection that further pushes the entire operating member against the bottom plate when the lifting piece has lifted the locking member, The locking member is further rotated in the unlocking direction when the operating member is pushed up against the bottom plate by the push-up projection, thereby releasing the locking state between the locking part and the claw portion. A helmet buckle according to claim 1 or 2.

4. The end of the band into which it is inserted is the insertion end. The end opposite to the insertion-side end, where the tip of the inserted band protrudes, is the non-insertion-side end. The first support shaft is positioned closer to the insertion end than to the non-insertion end, The second support shaft is positioned closer to the non-insertion side end than to the insertion side end. In the operating member, the operating end located on the opposite side of the portion rotatably supported by the second support shaft is located closer to the insertion end than to the non-insertion end. A helmet buckle according to claim 1 or 2.

5. The base is attached to one of the first chin straps of the helmet, and the band is attached to the other of the second chin straps. The insertion end is located further away from the portion of the first chin strap that exits the helmet than the non-insertion end. The helmet buckle according to claim 4.

6. The operating base and the bottom plate define the insertion opening of the band. A helmet buckle according to claim 1 or 2.

7. A first biasing member is provided on the first support shaft, which biases the locking member in the locking direction so that the locking portion is engaged with the claw portion. A helmet buckle according to claim 1 or 2.

8. A second biasing member is positioned on the second support shaft, which biases the operating member in the standby direction, resulting in a standby state. A helmet buckle according to claim 1 or 2.

9. A helmet comprising a first chin strap with a band and a second chin strap with a buckle configured to secure the band, The band is provided with a claw portion on its first surface, The aforementioned buckle is, A base comprising a bottom plate and a pair of side plates, into which the band is inserted such that the second surface opposite to the first surface is in contact with the bottom plate, A locking member is provided with a locking portion that engages with the claw portion, and is rotatably supported on the base by a first support shaft so as to be able to engage with the claw portion of the band inserted between the locking portion and the bottom plate from the insertion direction of the band, An operating base is rotatably supported on the base by the first support shaft, The operating base includes an operating member that is rotatably supported by a second support shaft, The operating member includes a lifting piece that rotates the locking member around the second support shaft to lift it, When the operating member is rotated in the unlocking direction around the second support shaft, it rotates in the unlocking direction, lifting the locking member around the first support shaft with the lifting piece. helmet.

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