Seatbelt retractor frame assembly

Patent metadata

Field	Value
Publication number	US-11787364-B2
Application number	US-202117549143-A
Country	US
Kind code	B2
Filing date	Dec 13, 2021
Priority date	Dec 13, 2021
Publication date	Oct 17, 2023
Grant date	Oct 17, 2023

Abstract

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle includes a frame assembly having a frame and an attachment bracket adapted to be interlocked to have an inner space for receiving the spindle, a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator.

First claim

What is claimed is:

1. A seatbelt pretensioner system for use in a seatbelt pretensioning retractor assembly having a spindle in a vehicle, the seatbelt pretensioner system comprising:
a frame assembly including a frame and an attachment bracket adapted to be interlocked to have an inner space for receiving the spindle;
a housing adapted for being mounted to the frame assembly and having an interior cavity;
a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing;
a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning; and
a pretensioner rod disposed inside the pretensioner tube, the pretensioner rod having a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator,
wherein, in the frame assembly, the frame includes at least one pad and the attachment bracket includes at least one slot such that the pad of the frame is slidably engaged with the slot of the attachment bracket.

2. The seatbelt pretensioner system of claim 1 , wherein the pads of the frame are fixedly connected to the attachment bracket by a bonded manner as a single unit.

3. The seatbelt pretensioner system of claim 1 , wherein the frame is formed with a box type and the at least one pad defines a base of the frame such that the base of the frame is attached to the attachment bracket.

4. The seatbelt pretensioner system of claim 1 , wherein the at least one pad of the frame is inward bent and interlocks with the at least one slot of the attachment bracket such that the pad of the frame overlaps the attachment bracket.

5. The seatbelt pretensioner system of claim 1 , wherein the attachment bracket is formed with a flat shape having a main portion to receive the frame and a connection portion to attach the frame assembly to the vehicle seat.

6. The seatbelt pretensioner system of claim 5 , wherein the main portion of the attachment bracket further includes at least one opening for facilitating the at least one pad to slidably engage with the slot of the attachment bracket.

7. The seatbelt pretensioner system of claim 1 , wherein the at least one pad of the frame is inserted into at least one opening of the attachment bracket and slides into the at least one slot such that the frame and the attachment bracket are structurally connected to each other.

8. A frame assembly for use in a seatbelt retractor assembly having retractor components in a vehicle, the frame assembly comprising:
a frame formed with a box type, the frame including at least one pad defined a base plane of the frame; and
an attachment bracket formed with a flat shape, the attachment bracket including at least one slot,
wherein the at least one pad of the frame is slidably engaged with the at least one slot of the attachment bracket such that the frame and attachment bracket are adapted to be interlocked to receive the retractor components.

9. The frame assembly of claim 8 , wherein the pad of the frame is fixedly connected to the attachment bracket by a bonded manner as a single unit.

10. The frame assembly of claim 8 , wherein the pad of the frame is inserted into an opening of the attachment bracket and slides into the slot such that the frame and the attachment bracket are structurally connected to each other.

11. The frame assembly of claim 8 , wherein the at least one pad of the frame is inward bent and interlocks with the at least one slot of the attachment bracket such that the pad of the frame overlaps the attachment bracket.

12. The frame assembly of claim 8 , wherein the attachment bracket further includes a main portion to receive the frame and a connection portion to attach the frame assembly to a vehicle structure.

Assignees

• Autoliv Asp Inc

Inventors

• Burrow Jon E
• Murphy Daniel Robert
• Wang Bin

Classifications

• B60R22/46 Primary

  {Reels} with means to tension the belt in an emergency {by forced winding up}(electrical circuits for triggering safety arrangements B60R21/01 {; tensioners using reels only guiding the belt during normal use, e.g. splitted reels B60R22/195}) · CPC title

• B60R22/4633 Primary

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

• B60R2022/3402

  Retractor casings; Mounting thereof · CPC title

• B60R2022/4642

  the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber · CPC title