Buckle device

Patent metadata

Field	Value
Publication number	US-11819092-B2
Application number	US-202217886390-A
Country	US
Kind code	B2
Filing date	Aug 11, 2022
Priority date	Aug 26, 2021
Publication date	Nov 21, 2023
Grant date	Nov 21, 2023

Abstract

In a buckle device, when a belt starts to be allowed to be drawn, a fracture portion is deformed by a side surface of a connection hole of a spool, so that the fracture portion allows a rotation of the spool and allows drawing of the belt. Then, the fracture portion is fractured by the side surface of the connection hole. Therefore, a drawing allowance load of the belt when the belt starts to be allowed to be drawn can be increased.

First claim

What is claimed is:

1. A buckle device, comprising:
a buckle body configured to engage with a tongue provided at a webbing for attachment to an occupant;
a connection member which has a leading end side connected to the buckle body;
a winding shaft around which the connection member is wound from a base end side;
a prevention member which is configured to prevent the connection member from being drawn from the winding shaft, and which is deformed to allow the connection member to be drawn from the winding shaft and allow the buckle body to extend; and
a fracture portion which is configured to prevent the connection member from being drawn from the winding shaft, which is deformed to allow the connection member to be drawn from the winding shaft when the connection member starts to be allowed to be drawn from the winding shaft, and which is fractured to permit the connection member to be drawn from the winding shaft.

2. The buckle device according to claim 1 , further comprising a restriction member at which rotation is restricted, and which is provided with the fracture portion.

3. The buckle device according to claim 1 , further comprising a locking body at which the prevention member is locked, and which is provided with the fracture portion.

4. The buckle device according to claim 1 , further comprising a support which supports the winding shaft, and which is provided with the fracture portion.

5. The buckle device according to claim 1 , wherein the fracture portion protrudes in at least one of a rotational radial direction of the winding shaft or a rotational axis direction of the winding shaft.

6. The buckle device according to claim 1 , wherein a recess is provided at the fracture portion.

7. The buckle device according to claim 1 , wherein the fracture portion is deformed by the winding shaft.

8. The buckle device according to claim 1 , wherein a plurality of the fracture portions is disposed in a rotational direction of the winding shaft.

9. The buckle device according to claim 1 , wherein the fracture portion is deformed after the prevention member is deformed.

10. The buckle device according to claim 1 , wherein the fracture portion is deformed before the prevention member is deformed.

Assignees

• Tokai Rika Co Ltd
• Toyota Motor Co Ltd

Inventors

• Yamaguchi Ryuji
• Mizuno Yoshio
• Hirako Yutaka

Classifications

• A44B11/006 Primary

  Attachment of buckle to strap (for safety buckles A44B11/2553) · CPC title

• B60R22/185

  with stopping means for acting directly upon the belt in an emergency, e.g. by clamping or friction {(B60R22/195 takes precedence; combined with the retractor B60R22/42)} · CPC title

• B60R22/26

  secured to the seat · CPC title

• B60R22/28 Primary

  incorporating energy-absorbing devices {(belt anchors provided with energy-absorbing means for protecting the occupants in case of physical contact therewith B60R21/055; belt retractors comprising energy-absorbing means B60R22/341, B60R22/4676)} · CPC title

• B60R2022/281

  for buckles · CPC title