A seat belt retractor and a car seat belt device

A technology for a seat belt retractor and a sensing device, which is applied in the field of seat belts, can solve the problems of increased cost and assembly difficulty, complex structure of the seat belt retractor, etc., and achieves the effects of low cost, simplified structure and simple assembly.

Active Publication Date: 2017-11-17
BYD CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing seat belt retractor adopts two independent locking devices, more parts must be used to make the structure of the seat belt retractor more complicated, and the seat belt retractor tends to be larger, which increases its cost Problems with assembly difficulty

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A seat belt retractor and a car seat belt device
  • A seat belt retractor and a car seat belt device
  • A seat belt retractor and a car seat belt device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Such as figure 1 As shown, it includes a frame 1, a reel 3 (also known as a ribbon shaft, a winding shaft, etc.), a rewinding elastic part 2, a limiting part 4, a locking gear 6, a locking device 8, a pre-tensioning device 5 and a mechanical sensor device 7;

[0078] The frame 1 is fixedly installed on the vehicle body;

[0079] The reel 3 is installed in the frame 1, and is used to retract inwardly or outwardly release the webbing 31 wound thereon for restraining passengers;

[0080] The rewinding elastic member 2 is installed on one side of the frame 1 for automatically retracting the webbing 31;

[0081] The limiting member 4 is arranged at the center of the reel 3, and the two ends are respectively connected to the reel 3 and the locking gear 6;

[0082] The locking gear 6 is arranged on one side of the reel 3, and is connected with the reel 3 through the limiting member 4; The content groove 611 is provided with a cylindrical long axis portion 62 connected with...

Embodiment 2

[0128] This example provides a seat belt device, including the seat belt retractor mentioned in the first embodiment, the tongue slidably arranged on the webbing 31, and the seat belt installed on the vehicle body or the vehicle seat. Buckle with tongue fastening.

[0129] Because the seat belt retractor has been specifically introduced in Embodiment 1, and the tongue, buckle, etc. are well known to those skilled in the art, therefore, no more details are given.

[0130] Adopting the automobile safety belt device disclosed in this example, only one locking device 8 is provided in the safety belt retractor provided by it, and the locking device 8 can be activated by the mechanical sensing device 7 or the pretensioning device 5 respectively. , to lock the locking gear 6 . Integrating the two locking functions into one locking device 8 can avoid the problem that the webbing 31 of the seat belt retractor is pulled out after the pretensioning device 5 acts. At the same time, its ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

In order to solve the problem that the existing seat belt retractor adopts two independent locking devices, more parts must be used to make the structure of the seat belt retractor more complicated, and the seat belt retractor tends to be larger, which increases its cost Problems with assembly difficulty. The embodiment of the present invention provides a safety belt retractor and an automobile safety belt device. Embodiments of the present invention provide a safety belt retractor on the one hand, including a frame, a reel, a retractable elastic component, a limiting component, a locking gear, a locking device, a pre-tensioning device and a mechanical sensing device; the lock The stop device is used to receive the actions of the mechanical sensing device and the pre-tensioning device, and when the pre-tensioning device starts to act or the mechanical sensing device detects an abnormality, the locking gear is locked. The safety belt retractor provided by the embodiment of the present invention has a more simplified structure, miniaturization and light weight. Its assembly is also relatively simple, and the cost is relatively low.

Description

technical field [0001] The invention relates to the field of safety belts on automobiles, in particular to the safety belt retractor therein. Background technique [0002] For the sake of safety, the automobile safety belt is a necessary part on the vehicle. The existing safety belt device generally includes a safety belt retractor installed in the automobile body, and the safety belt (or webbing) is placed in the retractor. , to retract inward to tighten the webbing or pull outward to release the webbing. [0003] The current safety belt generally has a pyrotechnic pre-tensioning mechanism and a mechanical sensor locking mechanism at the same time. The function of the mechanical sensor device is to detect that the acceleration of the ribbon pulling out exceeds the setting of the mechanical sensor under normal circumstances. When the acceleration is high, the mechanical sensing locking mechanism locks the webbing winding device to prevent the webbing from being pulled out f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B60R22/38B60R22/46
Inventor 涂俊
Owner BYD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap