CN202098374U

CN202098374U - Vehicle safety belt retractor with emergency system

Info

Publication number: CN202098374U
Application number: CN2011201948041U
Authority: CN
Inventors: 郑北松; 张海玲; 黄婵珠; 宋金珍
Original assignee: Guangdong Dahao Vehicle Accessory Industry & Commerce Co Ltd
Current assignee: Guangdong Dahao Vehicle Accessory Industry & Commerce Co Ltd
Priority date: 2011-06-10
Filing date: 2011-06-10
Publication date: 2012-01-04
Anticipated expiration: 2021-06-10

Abstract

The utility model discloses a vehicle safety belt retractor with an emergency system, which comprises a pre-tensioning mechanism, a pre-tensioning reminding device, a children protection mechanism and a force limit device. The pre-tensioning mechanism comprises clutch blocks disposed on a driving wheel and between an inner cavity of the driving wheel and a winding shaft of the retractor. Two or more than two clutch blocks are symmetrically distributed on the periphery of the winding shaft of the retractor. The pre-tensioning reminding device comprises a cam wheel, a gear transmission mechanism and a pre-tensioning reminding switch. The force limit device comprises a winding drum, a mandrel sleeve ring, a winding shaft pressing cover and a torsion bar, and a first end of the mandrel sleeve ring is a torsion cap provided with an inner cavity. By adopting the vehicle safety belt retractor with the emergency system, passengers can be protected effectively and timely in case of emergencies. Further, over-large compression force of safety belts on the passengers is avoided simultaneously while the passengers are protected during safety belt retracting process.

Description

A kind of vehicle safety Webbing retractor with calibration package

Technical field

The utility model relates to a kind of safety belt for vehicle, relates in particular to a kind of vehicle safety Webbing retractor with calibration package.

Background technology

Along with the raising of living standards of the people and the extension of express highway, automobile gets into China family in a large number as a kind of high speed vehicle easily; Going on a tour of the whole family Holiday also becomes a kind of fashion; People are also increasingly high to the requirement of one of the important safety of automobile configuration safety strap, for satisfying the demand in high speed vehicle safety article market, the medium and high-grade automobile increase high dispose safety air bag in; The safety strap that belongs to one of security configuration has also had polytype safety to improve; Like lock in emergency formula safety strap, explosion type safety strap etc., wherein taking-up device is the core component of safety strap, has functions such as vehicle acceleration induction, belt acceleration induction.Number of patent application is to disclose " a kind of Webbing retractor " in the Chinese utility model patent of 200420088311.X; Comprise framework, reel, wind spring mechanism; Said wind spring mechanism comprises wind spring and coil spring box, lockable mechanism, car sense locking transmission mechanism, band sense locking transmission mechanism, ribbon etc.; These form structure can be when urgent collision situation takes place in automobile; The sense of safety strap car and the band sense restriction safety strap pulling of working can not solve automobile and when urgent collision situation, produce huge momentum, reduces safety strap frenulum people's damage; And can not when safety misadventure occurring, tighten up safety strap in advance, passenger is protected effectively and timely.

The utility model content

The utility model embodiment technical matters to be solved is, a kind of vehicle safety Webbing retractor with calibration package is provided.Can when emergency episode occurring, protect passenger timely and effectively, and when tightening up safety strap protection passenger, avoid safety strap excessive their forces.

In order to solve the problems of the technologies described above; The utility model embodiment provides a kind of vehicle safety Webbing retractor with the band calibration package; Comprise pre-tightening mechanism, pretension alarm set, children's health care mechanism and force limiting device; Said pre-tightening mechanism comprises the inner chamber that places power wheel and place said power wheel and the clutch block between the retractor spool; Said clutch block is to be symmetrically distributed in said retractor spool periphery more than two or two; The interior contact surface of said clutch block is the arc surface that is complementary with said retractor spool, and said clutch block outer contacting face is the arc surface that is complementary with said power wheel intracavity sidewall, and said outer contacting face first end to said spool axle core relative distance is greater than the distance of second end to said spool axial line; Said pretension alarm set comprises cam wheel, gear drive and pretension prompting switch; Said alarm set is electrically connected with said electronic control package; Said pretension reminds switch to be provided with button, and said cam wheel is provided with boss, the said button of said boss bruising; The engagement of said cam wheel and said gear drive, said gear drive and with the sun gear engagement of taking-up device mandrel; Said force limiting device comprises reel, the mandrel collar, spool gland, torsion bar; The said mandrel collar first end is the torsion cap with inner chamber; Said inner chamber connects first end of said torsion bar; Said torsion cap outside face is polygon, is socketed in the sliding cavity of the said reel that is complementary with said polygon connecting portion, and said spool gland is provided with second end that torsion seat coupling connects said torsion bar; On second end of said reel riveting pin is set, corresponding to said riveting pin pin-and-hole is set on the spool gland and captives joint with said reel.

More preferably, the interior contact surface of said pre-tightening mechanism clutch block is a rough surface.

More preferably, said retractor spool surface is a rough surface.

More preferably, between said power wheel and the said framework spacing shim is set, the bearing pin coupling is set on the said spacing shim connects the pin-and-hole that is provided with on the said clutch block, said clutch block and said pretension axle are separated.

More preferably, said gear drive is provided with gear A and gear B, and said gear A and gear B are meshing with each other; Said gear A and the engagement of said cam wheel, the sun gear engagement of said gear B and said taking-up device mandrel.

More preferably; The polygon connecting bridge of said torsion cap is first linkage section and second linkage section; Between said first linkage section and second linkage section lock ring is set; Lockhole that is provided with on said lock ring and the said reel and the locking plate clamping that takes the shape of the letter U make said torsion cap captive joint with said reel.

Implement the utility model embodiment, have following beneficial effect:

Implement the utility model; Can protection timely and effectively be provided to passenger when in vehicle ', emergency episode occurring; Simultaneously when tightening up safety strap protection passenger through the distortion of force-limiting device the collision energy of absorbing redundant; Reduce the human chest amount of compression, thereby avoid safety strap excessive and make it receive excessive strike to greatest extent their forces.

Description of drawings

Fig. 1 is a kind of vehicle safety Webbing retractor structural representation with calibration package of the utility model;

Fig. 2 is a kind of safety belt for vehicle pre-tightening mechanism clutch configuration scheme drawing with calibration package of the utility model;

Fig. 3 is a kind of safety belt for vehicle pre-tightening mechanism power wheel structural representation with calibration package of the utility model;

Fig. 4 is a kind of safety belt for vehicle pretension alarm set structural representation with calibration package of the utility model;

Fig. 5 is a kind of safety belt for vehicle force limiting device structural representation with calibration package of the utility model;

Fig. 6 is the cutaway view of a kind of safety belt for vehicle force limiting device with calibration package of the utility model.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done to describe in detail further below.

Fig. 1 is a kind of vehicle safety Webbing retractor structural representation with calibration package of the utility model, comprises pre-tightening mechanism 1, pretension alarm set 2, children's health care mechanism 3 and force limiting device 4.

Be illustrated in figure 2 as pre-tightening mechanism clutch configuration scheme drawing; Comprise power wheel 11 and clutch block 12; Said clutch block is two and is symmetrically distributed in said retractor spool periphery; The arc surface that the interior contact surface of said clutch block 12 and said retractor spool are complementary, the outer contacting face of said clutch block 12 are the arc surface that is complementary with said power wheel 11 intracavity sidewalls 113.

The arc radius of said clutch block 12 outer contacting faces first end 121 is greater than the arc radius of second end 122.

Interior contact surface like Fig. 2, said clutch block 12 shown in Figure 3 is a rough surface.

Preferable, said rough surface can be the serration shape or grinds flower-shaped rough surface.

Need to prove, can be the serration shape or grind flower-shaped rough surface with the retractor spool surface of said pre-tightening mechanism 1 socket.

Need to prove that also it is the utility model preferred implementation that said clutch block 12 is two, said clutch block 12 can be and is symmetrically distributed in said retractor spool periphery more than two.

In conjunction with Fig. 2, Fig. 3; When said pre-tightening mechanism 1 is done the time spent; Because the arc radius of said clutch block 12 first ends 121 is greater than the arc radius of said second end 122, said clutch block 12 turns over certain angle to said second end, 122 directions under said power wheel 11 intracavity sidewalls 113 function of friction, thereby clamps said retractor spool; Stop taking-up device to be rotated further, thereby tighten up safety strap.

Like the pretension alarm set of Fig. 1, Fig. 4, comprise pretension switch 21, cam wheel 22, first transmission gear 23 and second transmission gear 24.

Said cam wheel 22 has a boss 221; Said boss 221 touches the contact of said pretension switch 21; Said first transmission gear 23 and said cam wheel 22 engagements; Said first transmission gear 23 meshes with the sun gear 5 of said retractor spool with said second transmission gear 24 engagements, said second transmission gear 24.

Said cam wheel 22 boss 221 touched the contact of said pretension switch 21 when said pretension alarm set was in initial condition, and said pretension alarm set is in off-state, and said vehicle pretension signal can't arrive Webbing retractor; When safety strap is pulled out use; Retractor spool drives said second transmission gear 24 that is engaged with and rotates, thereby said cam wheel 22 is rotated, and said boss 221 leaves the contact of said prompting switch 21; Remind switch conduction, vehicle pretension signal can normally arrive Webbing retractor.

Fig. 5 is said force limiting device structural representation, comprises reel 41, the mandrel collar 42, spool gland 43, torsion bar 44, and the mandrel collar 42 first ends are torsion cap 421; Said torsion cap 421 outside faces are polygon, and a sliding cavity 411 is set in the reel 41, the outside face coupling of sliding cavity 411 first ends and torsion cap 421; Make torsion cap 421 can be socketed in sliding cavity 411 first ends; Torsion cap 421 set inside one inner chamber 422 connects torsion bar first end 441, and first end, 441 couplings of its shape and torsion bar are provided with a torsion seat 431 on the spool gland 43; Its inner chamber is connected with second end, 442 couplings of torsion bar 44; One riveting pin 412 is set on second end of reel 41, on the corresponding end face of spool gland 43, pin-and-hole 432 is set, reel 41 is captiveed joint through riveting pin 412, pin-and-hole 432 with spool gland 43.

What need describe is; The polygon connecting bridge of torsion cap 421 is first connecting portion and second connecting portion; Lock ring 422 is set wherein; Torsion cap 421 is socketed on sliding cavity 411, through lockhole 414 and the cooresponding U-shaped locking plate 413 that on reel 41, is provided with corresponding to the lock ring position torsion cap 421 is fixed in the sliding cavity 411.

With reference to Fig. 5, Fig. 6, when automobile bumps, safety strap vehicle and the sudden change of occupant's acceleration/accel direction; The sense of safety strap car is worked with the band sense; Reel 41 is destroyed force-limiting device generation effect, the collision energy of absorbing redundant through the distortion of torsion bar 44 with the riveting pin 412 of spool gland 43 simultaneously; Reduce the amount of compression of human chest, make the occupant exempt from extra injury to greatest extent.

Above disclosedly be merely a kind of preferred embodiment of the utility model, can not limit the interest field of the utility model certainly with this, the equivalent variations of therefore being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1. vehicle safety Webbing retractor with calibration package; It is characterized in that; Comprise pre-tightening mechanism, pretension alarm set, children's health care mechanism and force limiting device; Said pre-tightening mechanism comprises the inner chamber that places power wheel and place said power wheel and the clutch block between the retractor spool; Said clutch block is to be symmetrically distributed in said retractor spool periphery more than two or two; The interior contact surface of said clutch block is the arc surface that is complementary with said retractor spool, and said clutch block outer contacting face is the arc surface that is complementary with said power wheel intracavity sidewall, and said outer contacting face first end to said spool axle core relative distance is greater than the distance of second end to said spool axial line; Said pretension alarm set comprises cam wheel, gear drive and pretension prompting switch; Said alarm set is electrically connected with said electronic control package; Said pretension reminds switch to be provided with button, and said cam wheel is provided with boss, the said button of said boss bruising; The engagement of said cam wheel and said gear drive, said gear drive and with the sun gear engagement of taking-up device mandrel; Said force limiting device comprises reel, the mandrel collar, spool gland, torsion bar; The said mandrel collar first end is the torsion cap with inner chamber; Said inner chamber connects first end of said torsion bar; Said torsion cap outside face is polygon, is socketed in the sliding cavity of the said reel that is complementary with said polygon connecting portion, and said spool gland is provided with second end that torsion seat coupling connects said torsion bar; On second end of said reel riveting pin is set, corresponding to said riveting pin pin-and-hole is set on the spool gland and captives joint with said reel.

2. the vehicle safety Webbing retractor of band calibration package as claimed in claim 1 is characterized in that, the interior contact surface of said pre-tightening mechanism clutch block is a rough surface.

3. the vehicle safety Webbing retractor of band calibration package as claimed in claim 1 is characterized in that, said retractor spool surface is a rough surface.

4. the vehicle safety Webbing retractor of band calibration package as claimed in claim 1; It is characterized in that; Between said power wheel and the said framework spacing shim is set; The bearing pin coupling is set on the said spacing shim connects the pin-and-hole that is provided with on the said clutch block, said clutch block and said pretension axle are separated.

5. the vehicle safety Webbing retractor of band calibration package as claimed in claim 1 is characterized in that said gear drive is provided with gear A and gear B, and said gear A and gear B are meshing with each other; Said gear A and the engagement of said cam wheel, the sun gear engagement of said gear B and said taking-up device mandrel.

6. the vehicle safety Webbing retractor of band calibration package as claimed in claim 1; It is characterized in that; The polygon connecting bridge of said torsion cap is first linkage section and second linkage section; Between said first linkage section and second linkage section lock ring is set, lockhole that is provided with on said lock ring and the said reel and the locking plate clamping that takes the shape of the letter U make said torsion cap captive joint with said reel.