CN217415697U

CN217415697U - Safety belt end piece pretensioner

Info

Publication number: CN217415697U
Application number: CN202220135986.3U
Authority: CN
Inventors: 杨伦; 李亮; 黄永亮; 何文; 冯志斌
Original assignee: Yanfeng Automotive Safety Systems Co Ltd
Current assignee: Yanfeng Automotive Safety Systems Co Ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-09-13
Anticipated expiration: 2032-01-13

Abstract

The utility model belongs to the technical field of the car blet technique and specifically relates to a safety belt end piece pretensioner, including the stationary blade, the wire rope stationary blade, wire rope, air intake manifold, piston mechanism, miniature gas generator, the steel pipe, miniature gas generator installs on air intake manifold, air intake manifold installs the tip at the steel pipe, behind air intake manifold is passed to wire rope's one end, fixed with piston mechanism, wire rope's the other end is fixed with the wire rope stationary blade, air intake manifold's end fixing has the stationary blade, wire rope is located between stationary blade and the air intake manifold, the bending structure of stationary blade supports wire rope, wire rope's middle part is the sinuosity. Compared with the prior art, the utility model, through the bending structure restriction wire rope bending angle of stationary blade, to the wire rope bending angle requirement of difference, only need change bending structure the shape can, need not redevelop air intake manifold, not only reduced development cost, also shortened development cycle.

Description

Safety belt end piece pretensioner

Technical Field

The utility model belongs to the technical field of the car blet technique and specifically relates to a safety belt end piece pretensioner.

Background

With the popularization of automobiles and the improvement of automobile safety regulations, public attention is paid to automobile safety and NCAP, and the passive safety configuration of automobiles is continuously promoted by host factories. In a passive safety system, the safety belt is the last line of defense to protect the occupants, and the safety belt can significantly reduce the mortality and injury values in a collision accident.

The primary purpose of an end plate pretensioner in a seat belt is to reduce the amount of injury to an occupant in the event of a collision. The action principle of the end piece pretensioner is that the woven belt is recovered at the moment of collision, the gap between the lower limbs of a passenger and the seat is eliminated, the sitting posture of the passenger is standardized, the upper limbs of the passenger lean forward in the collision process, and the force on the woven belt can be transmitted to the shoulder part through the chest cavity, so that the chest pressure and the injury of the passenger can be remarkably reduced.

The end piece pretensioner mainly comprises a steel wire rope fixing piece, a steel wire rope, an air inlet manifold, a piston mechanism, a micro gas generator and a steel pipe. The steel wire rope sequentially penetrates through the air inlet manifold, the steel pipe and the piston mechanism, one end of the steel wire rope is riveted with the steel wire rope fixing piece, the other end of the steel wire rope is riveted with the piston mechanism, the micro gas generator is ignited at the moment of automobile collision, generated gas enters the cavity of the air inlet manifold, the piston mechanism is pushed to move along the inner wall of the steel pipe, and therefore the steel wire rope and a braid sewn on the steel wire rope fixing piece are driven to be recycled, and the waist braid is recycled. Eliminate the clearance between the lower limbs and the seat and play the role of waist pre-tightening.

According to different vehicle body structures, the arrangement schemes of the end piece pretensioner and the orientation of the steel pipe can be different, the different arrangement schemes comprise seat installation or B-pillar bottom plate installation, and the steel pipe has two schemes of front facing or rear facing. Corresponding to different arrangement schemes and steel pipe orientations, in order to ensure that commodity performance and the performance of the pre-tightening end piece are not influenced, the steel wire rope of the end piece pre-tightening device can be set to different angles. In order to meet the set steel wire rope angle requirement, the intake manifold needs to be redeveloped at each angle, so that the development cost is increased, and the development period is prolonged.

Therefore, there is a need to design a seatbelt end plate pretensioner that meets different wire rope bending angle requirements without redeveloping the intake manifold, thereby reducing development costs and shortening the development cycle.

Disclosure of Invention

The utility model aims at overcoming prior art's not enough, providing a safety belt end piece pretensioner, under the condition that need not develop intake manifold again, satisfy different wire rope bending angle requirements to reduce development cost, shorten development cycle.

In order to achieve the purpose, the utility model provides a safety belt end piece pretensioner, including the stationary blade, the wire rope stationary blade, wire rope, air intake manifold, piston mechanism, miniature gas generator, the steel pipe, miniature gas generator installs on air intake manifold, air intake manifold installs the tip at the steel pipe, after air intake manifold was passed to wire rope's one end, it is fixed with piston mechanism, wire rope's the other end is fixed with the wire rope stationary blade, air intake manifold's end fixing has the stationary blade, wire rope is located between stationary blade and the air intake manifold, the bending structure of stationary blade supports wire rope, wire rope's middle part is the bending form.

The end part of the air inlet manifold and the fixing plate are of a semi-open structure, and the semi-open structure of the air inlet manifold is matched with the semi-open structure of the fixing plate.

The semi-open structure is L-shaped.

The end of the air inlet manifold is provided with an assembly hole, and the fixing sheet is fixed with the assembly hole of the air inlet manifold.

The fixing plate is connected with the air inlet manifold through the assembling hole in a reaming mode.

The bending structure inclines towards the direction of the steel wire rope, and the bending angle of the steel wire rope is an acute angle.

The bending structure inclines to the opposite direction of the steel wire rope, and the bending angle of the steel wire rope is an obtuse angle.

The end part of the bending structure is provided with a bending structure which is tilted upwards.

Compared with the prior art, the utility model, add the stationary blade that has bending structure at intake manifold's tip, through the bending structure restriction wire rope bending angle of stationary blade, to the wire rope bending angle requirement of difference, only need change bending structure's shape can, need not redevelop intake manifold, not only reduced development cost, also shortened development cycle.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model provides a safety belt end piece pretensioner, including the stationary blade, the wire rope stationary blade, wire rope, air intake manifold, piston mechanism, miniature gas generator, the steel pipe, miniature gas generator 6 installs on air intake manifold 4, air intake manifold 4 installs the tip at steel pipe 7, air intake manifold 4 back is passed to wire rope 3's one end, it is fixed with piston mechanism 5, wire rope 3's the other end is fixed with wire rope stationary blade 2, air intake manifold 4's end fixing has stationary blade 1, wire rope 3 is located between stationary blade 1 and the air intake manifold 4, the bending structure 11 of stationary blade 1 supports wire rope 3, wire rope 3's middle part is the sinuosity.

The end of the intake manifold 4 and the stator plate 1 are of a semi-open structure, and the semi-open structure of the intake manifold 4 is matched with the semi-open structure of the stator plate 1. The semi-open structure is L-shaped. The installation between the fixing plate 1 and the intake manifold 4 is firmer, and the fixing plate 1 is prevented from rotating or falling off due to the reaction force of the steel wire rope 3.

The end of the intake manifold 4 is provided with an assembly hole, and the fixing piece 1 is fixed with the assembly hole of the intake manifold 4. The fixing plate 1 and the intake manifold 4 are connected by adopting a hole expansion of an assembly hole.

For different bending angle settings of the steel wire rope 3, the shape of the bending structure 11 of the fixing piece 1 is changed, so that the contact points of the steel wire rope 1 and the fixing piece 1 are located at different heights, and the bending angle settings of different steel wire ropes 3 are formed. The bending structure 11 inclines to the steel wire rope 3 direction, the steel wire rope 3 is higher than the contact point of the fixing piece 1, and the bending angle of the steel wire rope 3 is an acute angle. The bending structure 11 inclines to the opposite direction of the steel wire rope 3, the contact point of the steel wire rope 3 and the fixing piece 1 is lower, and the bending angle of the steel wire rope 3 is an obtuse angle.

The tip of bending structure 11 is equipped with the bending structure 12 of perk upwards, and bending structure 12 guarantees that in the use, the seat is adjusted to different positions, and when wire rope 3 crooked different angles, the stationary blade 1 all is smooth cambered surface with the face of wire rope 3 contact. Thereby reducing the abrasion of the steel wire rope 3 in the long-term use process, ensuring the strength of the end piece pretensioner, reducing the resistance of the steel wire rope 3 in the pretensioning process and improving the pretensioning effect.

The utility model discloses when the installation, wire rope 3's both ends are pressed with wire rope stationary blade 2, piston mechanism 5 respectively and are riveted fixed back, bend wire rope 3 to the state that is less than the settlement angle to put stationary blade 1 on intake manifold 4 and the installation face, carry out reaming processing to the pilot hole. After the fixing piece 1 is installed, the steel wire rope 3 is loosened, and the safety part of the steel wire rope 3 is contacted with the bending structure 11 of the fixing piece 1, so that the set bending angle of the steel wire rope 3 is formed.

The utility model discloses in the twinkling of an eye of car collision, miniature gas generator 6 is exploded by the point, and the gaseous cavity that gets into air intake manifold 4 that the point was exploded and produced to promote piston mechanism 5 and remove along 7 inner walls of steel pipe, and retrieve from driving wire rope 3, play the effect of pretension.

The utility model discloses add stationary blade 1 that has bending structure 11 at air intake manifold 4's tip, through the 3 bending angle of bending structure 11 restriction wire rope of stationary blade 1, to the 3 bending angle requirements of wire rope of difference, only need change bending structure 11 the shape can, need not redevelop air intake manifold 4, not only reduced development cost, also shortened development cycle.

Claims

1. The utility model provides a safety belt end piece pretensioner, includes the stationary blade, the wire rope stationary blade, wire rope, air intake manifold, piston mechanism, miniature gas generator, the steel pipe, install on air intake manifold (4) miniature gas generator (6), the tip at steel pipe (7) is installed in air intake manifold (4), the one end of wire rope (3) is passed behind air intake manifold (4), fixed with piston mechanism (5), the other end and the wire rope stationary blade (2) of wire rope (3) are fixed, its characterized in that: the end part of the air inlet manifold (4) is fixedly provided with a fixing piece (1), the steel wire rope (3) is positioned between the fixing piece (1) and the air inlet manifold (4), the bending structure (11) of the fixing piece (1) is abutted against the steel wire rope (3), and the middle part of the steel wire rope (3) is bent.

2. The seat belt end piece pretensioner according to claim 1, wherein: the end part of the air inlet manifold (4) and the fixing sheet (1) are of a semi-open structure, and the semi-open structure of the air inlet manifold (4) is matched with the semi-open structure of the fixing sheet (1).

3. The seat belt end piece pretensioner according to claim 2, wherein: the semi-open structure is L-shaped.

4. The seat belt end piece pretensioner according to claim 1, wherein: the end part of the air inlet manifold (4) is provided with an assembling hole, and the fixing sheet (1) is fixed with the assembling hole of the air inlet manifold (4).

5. The seat belt end piece pretensioner according to claim 4, wherein: the fixing sheet (1) is connected with the air inlet manifold (4) through a hole expanding of an assembling hole.

6. The seat belt end piece pretensioner according to claim 1, wherein: the bending structure (11) inclines towards the direction of the steel wire rope (3), and the bending angle of the steel wire rope (3) is an acute angle.

7. The seat belt end piece pretensioner according to claim 1, wherein: the bending structure (11) inclines in the opposite direction of the steel wire rope (3), and the bending angle of the steel wire rope (3) is an obtuse angle.

8. The seat belt end piece pretensioner according to claim 1, wherein: the end part of the bending structure (11) is provided with a bending structure (12) which is tilted upwards.