Webbing take-up device

Patent metadata

Field	Value
Publication number	US-9718439-B2
Application number	US-201113178241-A
Country	US
Kind code	B2
Filing date	Jul 7, 2011
Priority date	Jul 9, 2010
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

When disassembling after a gas being supplied into a tube member, the gas in the tube member is discharged before the tube member and a moving member become separable. In a webbing take-up device, a cover plate cannot be removed from a frame and thereafter a cylinder and a piston inside the cylinder cannot be separated before covering of a fixing screw with a covering section of a plate being released by removing a screw from an exhaust port of the cylinder and by removing the plate from the cylinder. Thus, after a high-pressure gas being supplied into the cylinder, the high-pressure gas inside the cylinder can surely be discharged by removing the plate from the cylinder and the exhaust port is opened by the screw before the cylinder and the piston being separated.

First claim

What is claimed is:

1. A webbing take-up device comprising:
a winding shaft that winds a webbing applied to a passenger of a vehicle by rotating in a winding direction;
a tube member, into one side of which a gas is supplied at a predetermined occasion;
a moving member mounted to the tube member by a removable mounting member, the moving member being that is moved to the other side of the tube member by pressure of the gas supplied into the one side of the tube member thereby rotating the winding shaft in the winding direction;
a removal member at which an attachment portion attachable to the tube member is formed, and a restriction section which interferes with the separation of the tube member and the moving member when the removal member is attached to the tube member is formed, the removal member including the attachment portion and the restriction section being a one piece member; and
a closing member that closes an exhaust port formed in the tube member and allows the gas inside the tube member to be discharged via the exhaust port to an outside of the tube member by the exhaust port being opened when the removal member is removed,
wherein the closing member attaches the attachment portion of the removal member to the tube member, and
the exhaust port is formed at a location of the tube member such that the exhaust port communicates an inside portion of the tube member where the gas is supplied in a pressurized state with an outside of the tube member.

2. The webbing take-up device of claim 1 , wherein the restriction section allows separation of the tube member and the moving member when the removal member is detached and removed from the tube member.

3. The webbing take-up device of claim 1 , wherein the closing member fixes the removal member to the tube member by the closing member being inserted in the exhaust port.

4. The webbing take-up device of claim 1 , wherein, by the gas being supplied at the predetermined occasion into the one side of the tube member, the moving member protrudes from an open end portion which is at the other side of the tube member.

5. The webbing take-up device of claim 1 , wherein the gas inside the tube member is discharged via the exhaust port to the outside of the tube member by the closing member being separated from the exhaust port so as to open the exhaust port.

6. The webbing take-up device of claim 1 , wherein the gas inside the tube member is discharged via the exhaust port to the outside of the tube member by the closing member, which is inserted into the exhaust port so as to close the exhaust port and is inserted in a hole portion formed at the removal member being separated from the exhaust port so as to open the exhaust port and so as to be separable from the removal member.

7. The webbing take-up device of claim 1 , wherein the closing member is attached to the tube member so as to attach the removal member to the tube member by the closing member being inserted in the exhaust port and being inserted in a hole formed at the removal member.

8. The webbing take-up device of claim 1 ,
wherein an attachment hole is formed at the attachment portion of the removal member, and
the closing member attaches the attachment portion of the removal member to the tube member by the closing member being inserted in the attachment hole and the exhaust port.

9. The webbing take-up device of claim 1 ,
wherein the closing member detachably mounts the attachment portion of the removal member to the tube member.

10. The webbing take-up device of claim 9 , wherein the closing member is a fastener.

11. The webbing take-up device of claim 1 , wherein:
the tube member is assembled between a mounting member and a device main body side member, and
the restriction section covers an attachment section, the mounting member and the device main body side member are attached by the attachment section with the tube member therebetween in a state in which the removal member is attached to the tube member.

Assignees

• Nagata Tomonori
• Yamazoe Hiroaki
• Okubo Shinichi
• Kato Keiichi
• Kk Tokai-Rika-Denki-Seisakusho

Inventors

• Nagata Tomonori
• Yamazoe Hiroaki
• Okubo Shinichi
• Kato Keiichi

Classifications

• B60R22/4633

  Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis · CPC title

• B60R22/4628 Primary

  characterised by fluid actuators, e.g. pyrotechnic gas generators (actuating a cable B60R22/4619) · CPC title