CN206243128U - A kind of automobile safety belt retractor for suppressing noise - Google Patents

Abstract

The utility model is related to vehicle passive safety engineering device technique field, specifically a kind of automobile safety belt retractor for suppressing noise, including belt reel, eccentric wheel, swing arm, mechanical side cover, sensitive pawl, sensitive ball and sensitive seat, belt reel is connected with eccentric wheel, the inner ring of swing arm is coated on eccentric wheel, mechanical side is covered and is provided with position limiting structure, and swing arm passes through position limiting structure.The utility model compared with the existing technology, devises oscillating arm mechanisms, and after occupant's wear safety belt, due to wearing the natural backrush of rear coiler, car sense is suppressed, and when running car produces vibration, the noise that Che Gan mechanisms produce is suppressed, and improves the comfort level of occupant.When there is lock in emergency, due to the pull-out of safety belt, car sense holddown is cancelled, and safety belt realizes lock in emergency, it is ensured that occupant safety, meets laws and regulations and vehicle factory performance requirement.Additionally, reducing extra elastic tension part, number of molds so that number of parts is minimized, and reduces production management cost.

Description

A kind of automobile safety belt retractor for suppressing noise

Technical field

The utility model is related to vehicle passive safety engineering device technique field, specifically a kind of automobile peace for suppressing noise Full Webbing retractor.

Background technology

With being continuously increased for China's automobile guarantee-quantity, user vehicle is meeting the basis of vehicle dynamic quality and security On, to it is also proposed requirement higher on riding comfort.Used as the important evaluation index of vehicle ride comfort, automobile is made an uproar Sound can largely reflect the design level and technological level of manufacturer.Therefore, car noise to minimum water is controlled Flat is also the direction that automobile designers are pursued.Car belt is equally faced with reduction as a part for automotive trim system The challenge of noise.

Safety belt is the function of realizing in case of emergency constraining occupant, its important component lock in emergency type coiler Inside has numerous mechanical structures, including lock in emergency trigger mechanism and lockable mechanism.Wherein especially with automobile plus/minus speed Trigger mechanism, i.e. car sense, the noise of generation is the most obvious.Car sense is at present under various vibration operating modes, in retracting device assembly Maximum noise source.The installation site of some coilers is very near with the distance of human ear, and passenger is more sensitive to the noise of safety belt, Requirement of the vehicle factory to the noise of this Partial security band also highest.And the swing arm dampening mechanism that presently, there are, in swing arm part On the basis of be required for increasing extra elastic tension part realizing friction, increase damping, number of parts is more, cost compared with High, assembly packaging technology is complicated.

Accordingly, it would be desirable to design a kind of both with car sense noise suppression function, the automotive safety of performance requirement is disclosure satisfy that again Webbing retractor.

The content of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of both to have car sense noise suppression work( Can, the automobile safety belt retractor of performance requirement is disclosure satisfy that again.

In order to achieve the above object, the utility model is a kind of automobile safety belt retractor for suppressing noise, including winding Cylinder, eccentric wheel, swing arm, mechanical side cover, sensitive pawl, sensitive ball and sensitive seat, it is characterised in that：Belt reel is connected with eccentric wheel, The inner ring of swing arm is coated on eccentric wheel, and mechanical side is covered and is provided with position limiting structure, and swing arm passes through position limiting structure, when belt reel up time When pin is rotated, sensitive pawl is pushed down in swing arm and position limiting structure front contact, the bottom of swing arm, and sensitive ball is in fixing shape on sensitive seat State, when winding is rotated counterclockwise, swing arm and position limiting structure back contacts, the bottom of swing arm separate with sensitivity pawl, and sensitive ball exists It is in motion state on sensitive seat.

Described swing arm includes wobble-plate and swing arm, and wobble-plate is connected with swing arm, and wobble-plate card is provided with opening Structure, hatch frame is located at the opposite of swing arm, and hatch frame is provided with elastic tension structure, positioned at the swing of swing arm side Disk card is provided with reduction hatch frame.

The inner ring of described swing arm is provided with boss, and the circumference of described eccentric wheel is provided with groove, and boss is embedded in boss It is interior.

When described sensitive ball is in motion state on sensitive seat, there is anxious acceleration or suddenly slow down in vehicle, sensitive ball is promoted Sensitive pawl is lifted, sensitive pawl and ratchet locking.

The utility model compared with the existing technology, devises oscillating arm mechanisms, after occupant's wear safety belt, after wearing The natural backrush of coiler, car sense is suppressed, and when running car produces vibration, the noise that Che Gan mechanisms produce is suppressed, and improves The comfort level of occupant.When there is lock in emergency, due to the pull-out of safety belt, car sense holddown is cancelled, and safety belt is realized Lock in emergency, it is ensured that occupant safety, meets laws and regulations and vehicle factory performance requirement.Additionally, using on wobble-plate part Elastic tension structure design, reduce extra elastic tension part, number of molds so that number of parts minimize, while Decrease the management cost in safety belt production.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is structural representation of the present utility model two.

Fig. 3 is sensitive ball stationary state schematic diagram one of the present utility model.

Fig. 4 is sensitive ball stationary state schematic diagram two of the present utility model.

Fig. 5 is sensitive ball motion state schematic diagram one of the present utility model.

Fig. 6 is sensitive ball motion state schematic diagram two of the present utility model.

Fig. 7 is swing arm structure schematic diagram of the present utility model.

Fig. 8 is eccentric wheel structure schematic diagram of the present utility model.

Referring to Fig. 1-Fig. 8,1 is belt reel；2 is eccentric wheel；2a is groove；3 is swing arm；3a is bottom；3b is elasticity Locking structure；3c is reduction hatch frame；3d is boss；4 is ratchet；5 is sensitive pawl；6 is sensitive ball；7 is sensitive seat；8 is machine Tool side cover；8a is anterior position limiting structure；8b is position limiting structure rear portion.

Specific embodiment

The utility model is described further in conjunction with accompanying drawing.

Referring to Fig. 1 and Fig. 2, the utility model be it is a kind of suppress noise automobile safety belt retractor, including belt reel, partially Heart wheel, swing arm, mechanical side cover, sensitive pawl, sensitive ball and sensitive seat.Belt reel 1 is connected with eccentric wheel 2, the inner ring cladding of swing arm 3 On eccentric wheel 2, mechanical side cover 8 is provided with position limiting structure, and swing arm 3 passes through position limiting structure.When belt reel 1 is rotated clockwise, Swing arm 3 is contacted with position limiting structure front portion 8a, and the bottom 3a of swing arm 3 pushes down sensitive pawl 5, and sensitive ball 6 is in fixing shape on sensitive seat 7 State, when belt reel 1 is rotated counterclockwise, swing arm 3 is contacted with position limiting structure rear portion 8b, bottom 3a and 5 points of the pawl of sensitivity of swing arm 3 From sensitive ball 6 is in motion state on sensitive seat 7.

Referring to Fig. 3 and Fig. 4, when coiler backrush in the direction of the clock, eccentric wheel 2 follows the dextrorotation of belt reel 1 Turn, due to frictional force relation, swing arm 3 follows eccentric wheel 2 to turn clockwise, until anterior with position limiting structure on mechanical side cover 8 8a is contacted, and by spacing, now swing arm 3 starts to rotate against with eccentric wheel 2, and the position of swing arm 3 is maintained at shown position, swing arm 3 bottom 3a pushes down sensitive pawl 5 all the time, so as to inhibit the bounce of sensitive ball 6, it is suppressed that vibrating noise.

Referring to Fig. 5 and Fig. 6, when coiler is pulled out counterclockwise, eccentric wheel 2 follows the rotate counterclockwise of belt reel 1, due to rubbing Power relation is wiped, swing arm 3 follows the rotate counterclockwise of eccentric wheel 2, contacted until with the position limiting structure rear portion 8b on mechanical side cover 8, and By spacing, now swing arm 3 starts to rotate against with eccentric wheel 2, and the position of swing arm 3 keeps shown position, swing arm 3 all the time not with it is quick Sense pawl 5 is contacted, and sensitive ball 6 is moved and is no longer restricted, and sensitive ball 6 is in motion state on sensitive seat 7.When vehicle produces anxious acceleration Or it is anxious sensitive ball 6 can promote sensitive pawl 5 to lift when slowing down, sensitive pawl 5 and the locking of ratchet 4 trigger coiler latch functions, volume Receive device lock in emergency functional rehabilitation.

Referring to Fig. 7, swing arm 3 includes wobble-plate and swing arm, and wobble-plate is connected with swing arm, and wobble-plate card is provided with out Mouth structure, hatch frame is located at the opposite of swing arm, and hatch frame is provided with elastic tension structure 3b, positioned at swing arm side Wobble-plate card is provided with reduction hatch frame 3c.So that swing arm 3 with eccentric wheel 2 when assembling, the entirety of swing arm 3 open and The deformation of elastic tension structure 3b is relatively easy to, and can be acted on by elastic tension structure 3b internal stress after mounting, real The automatic rebounding of existing swing arm 3.Designed by the elastic characteristic at the hatch frame of swing arm 3, friction, spacing, suppression function is integrated On a part, the number of parts and manufacturing cost of swing arm dampening mechanism is greatly decreased.

Referring to Fig. 8, the inner ring of swing arm 3 is provided with boss 3d, and the circumference of described eccentric wheel 2 is provided with groove 2a, boss 3d It is embedded in boss 3d, realizes the generation of frictional damping.

The utility model is based on lock in emergency formula safety belt, with car sense latch functions and angle oblique locking function, leads to The elastic construction design of swing arm 3 itself is crossed, oscillating arm mechanisms is realized suppressing in safety belt backrush the vibrating noise of car sense component, Improve the comfortableness that passenger takes.The utility model has that number of parts is few, assembly technology simple, advantage of lower cost it is excellent Point.

Claims (3)

1. a kind of automobile safety belt retractor for suppressing noise, including belt reel, eccentric wheel, swing arm, mechanical side cover, sensitive pawl, Sensitive ball and sensitive seat, it is characterised in that：Belt reel（1）With eccentric wheel（2）Connection, swing arm（3）Inner ring be coated on eccentric wheel （2）On, mechanical side cover（8）It is provided with position limiting structure, swing arm（3）Through position limiting structure, swing arm（3）Including wobble-plate and swing Arm, wobble-plate is connected with swing arm, and wobble-plate card is provided with hatch frame, and hatch frame is located at the opposite of swing arm, opening Structure is provided with elastic tension structure（3b）, the wobble-plate card positioned at swing arm side is provided with reduction hatch frame（3c）.

2. it is according to claim 1 it is a kind of suppress noise automobile safety belt retractor, it is characterised in that：Described swing arm （3）Inner ring be provided with boss（3d）, described eccentric wheel（2）Circumference be provided with groove（2a）, boss（3d）It is embedded in boss （3d）It is interior.

3. it is according to claim 1 it is a kind of suppress noise automobile safety belt retractor, it is characterised in that：Described sensitivity Ball（6）In sensitive seat（7）When above in motion state, anxious acceleration or suddenly slow down in vehicle, sensitive ball there is（6）Promote sensitive pawl（5） Lift, sensitive pawl（5）With ratchet（4）Locking.