CN2174373Y - Safety belt reeling device for seat of vehicle - Google Patents

Abstract

The utility model relates to a safety belt reeling device for vehicle seats, which is characterized in that the acceleration components of an inductive mesh belt acceleration is composed of a circular belt reeling shaft and at least one ratchet wheel fixedly arranged on the end of the belt reeling shaft; the circular belt reeling shaft movably passes through the elliptical shaft hole of the main board of the two sides of a belt reeling warehouse; the inclined upper side of the elliptical shaft hole of the main board is provided with internal ratchets; a locking component is composed of the internal ratchets and the ratchet wheels.

Description

Safety belt reeling device for seat of vehicle

The utility model relates to automobile safety seat belt mechanism, relates to a kind of later-model winding up apparatus for safety belt in vehicles particularly.

For the personal safety of driving, be equipped with automobile safety seat belt in the modern automobile.Safety strap generally is divided into simple-type and two kinds of forms of coiling type, and wherein rolling or safety strap are pulled out acceleration sensitive mainly due to free adjustment wearing length to body movement or ribbon, can in case of emergency effectively protect the occupant, thereby use the most extensive.The coiling type safety strap mainly is made up of taking-up device (comprising ribbon) and buckle component etc.Webbing retractor is generally by ribbon in the prior art, and take-up spool is store cassette holder (taking-up device mainboard), wind spring, and inductive means (car sense parts and band sense parts) and locking component etc. are formed.Taking-up device can divide two classes again by the locking mode: 1) utilize mobilizable ratchet on the mainboard and the outer ratchet that is assemblied on the take-up spool ends this shaft lock; 2) by fixedly handle ratchet wheel and the movable ratchet between mainboard handle ratchet wheel and take-up spool that is assemblied on the mainboard this shaft lock is ended.The effect commercial weight of this two classes taking-up device all is a principle of inertia, band sense parts are one and are installed in the inertia member that the take-up spool main shaft can rotate relative to main shaft, when sensing certain acceleration/accel that ribbon pulls out, this inertia member is rotated owing to keeping inertia to produce relative to main shaft, under above-mentioned first kind situation, the relative motion of this inertia member makes one by ratchet, the centre part that ratchet is formed rotates relative to main shaft again, thereby movable spinal plate pins the ratchet on the take-up spool on the drive mainboard, and this shaft lock is ended; Under the second class situation, thereby the relative motion that inertia member produces makes movable ratchet between take-up spool and handle ratchet wheel and the handle ratchet wheel pinning of being fixed on the mainboard make the take-up spool locking.When normally spurring ribbon, because at the uniform velocity drawstring or drawstring acceleration/accel are little, relative motion does not take place between inertance element and the main shaft, or only have less relative motion to be not enough to drive stopping element, thereby locking component is in non-lockup state, and ribbon can freely be pulled out or withdraw.In addition, car sense parts are generally by weight, steel ball or the acceleration-deceleration of pendulum induction body movement and the degree of dip of car body, thereby its induction amount makes above-mentioned all kinds of locking component locking pin take-up spool by drive disk assembly or centre part.

In above-mentioned existing two class taking-up devices, band sense inertia member and take-up spool are discrete, between them relative motion must be arranged; In first kind taking-up device, car sense and band sense parts also must be delivered to locking component with the induction amount by centre part, in second class, though inertia member can directly be finished the locking moving part by ratchet, but because mechanism kinematic and volume restrictions, ratchet is no more than three usually with contacting of ratchet, so force-bearing situation is very unreasonable.Because above-mentioned taking-up device complex structure, parts are many, therefore make manufacturing cost be difficult for reducing on the one hand, also make reliability decrease on the other hand.Centre part in the above-mentioned in addition first kind and the ratchet anti-impact force poor performance in second class are easy to wearing and tearing and damage.

In order to overcome above-mentioned shortcoming of the prior art, therefore the purpose of this utility model is to provide a kind of novel taking-up device, it simple in structure, when sensing certain acceleration/accel of ribbon, wherein inductive means also just can make the take-up spool locking without centre part without the motion of relative volume tape spool, and locking component is stressed rationally, not fragile, and, manufacturing cost is significantly reduced because one side simple in structure improves reliability.

The purpose of this utility model is achieved in that and has promptly designed a kind of new automobile winding up apparatus for safety belt, it is by ribbon, take-up spool, the winding storehouse, wind spring, composition such as inductive means and locking component, it is characterized in that: belt acceleration-sensing part is to be made of the ratchet that circular roll tape spool and at least one are fixedly mounted on this shaft end, described circular roll tape spool is through in the oval axis hole of both sides, winding storehouse mainboard movably, oblique upper at the inboard described oval axis hole of mainboard is provided with interior ratchet, it and described ratchet are formed locking component, just often, take-up spool and ratchet utilize gravity inertial and act at least one retracing spring on the take-up spool take-up spool is remained on the primary importance in the axis hole, do not contact with interior ratchet at the above ratchet of this position, and take-up spool can rotate in this position, when sensing the ribbon certain acceleration, take-up spool primary importance from axis hole moves on the second place, and the outer ratchet on the above ratchet of this position is locked in the interior ratchet on the mainboard.

Because the technical scheme that the utility model is above, just make band sense parts, locking component and the take-up spool trinity, therefore the structure of taking-up device is greatly simplified, component number descends, also just can make take-up spool locking reliably without centre part, the number of teeth of locking component can be at least greater than three, and is stressed rationally not fragile, improved reliability on the one hand, manufacturing cost is significantly reduced.

For other configuration and advantage of the present utility model understood better, below be described in detail by means of the preferred embodiment of accompanying drawing to the utility model taking-up device.

Fig. 1: according to disintegration transparent view of selecting embodiment of winding up apparatus for safety belt in vehicles of the present utility model;

Fig. 2: the part longitudinal sectional view of this embodiment taking-up device.

Fig. 1 has represented a preferred embodiment of the utility model taking-up device with the disintegration transparent view form of dwindling, this taking-up device comprises ribbon 3, take-up spool 2, winding storehouse 1, wind spring 5, wherein take-up spool 2 is circular sections, its end has a ratchet 21 with its one, take-up spool 2 is through the 1 liang of mainboard 10 in winding storehouse, 10 ' on two ellipticity axis holes 12 in, the other end of take-up spool 2 utilizes the cost of spindle nose and screw 23 to load onto another ratchet 22 regularly, at ratchet 21, be with the great circle arc part of retracing spring 15 on 22 the inboard take-up spool 2, the roundlet arc at these retracing spring 15 two is hooked in two hanging columns 13 on the mainboard respectively, on 14, the end rings of ribbon 3 is through in the eyelet 24 in the take-up spool, and fixture block 4 penetrated the ribbon end rings from the below of eyelet 24 and snap onto the below of eyelet 24, ribbon 3 is connected with take-up spool 2, extension spring end 25(at take-up spool sees Fig. 2) the inner of setting up wind spring 5, the other end of wind spring 5 is fixed on the inboard of wind spring lid 6, wind spring lid 6 utilize screw be fixed on mainboard 10 ' the outside on, cover plate 7 is being fixed with screw in the outside at mainboard 10, at mainboard 10, ratchet 11 in the oblique upper of 10 ' inboard described oval axis hole 12 is provided with, the ratchet 21 of take-up spool 2 and both sides wherein, 22 have directly constituted belt acceleration-sensing part together, described ratchet 21,22 has constituted locking component with the ratchet 11 on each limit.

The action principle of these band sense parts is as follows: just often, when also promptly drawing ribbon 3 at the uniform velocity or with less acceleration/accel, take-up spool 2 and ratchet 21,22 because the gravity of self and the effect of inertia and retracing spring 15 remain on the primary importance A in the axis hole 12 take-up spool 2, at this moment take-up spool 2 relative mainboards 10,10 ' only relatively rotate (or have simultaneously a spot of parallel move), but the outer ratchet on the ratchet 21,22 can not contact with interior ratchet 11 on the mainboard; When jerking ribbon 3, belt acceleration surpasses certain value, then take-up spool 2 is when mainboard rotates, because the power of ribbon pulling take-up spool has overcome the application force of above-mentioned gravity and retracing spring 15 under the effect of take-up spool rotor inertia and wind spring backrush power, take-up spool 2 is moved to rapidly on the second place B, originally ratchet 21, ratchet 11 contacted on a certain tooth on 22 and the mainboard one was specific, limited the rotation of take-up spool this moment, make take-up spool 2 drive ratchet 21,22 around above-mentioned specific in ratchet swing, subsequently just with mainboard on whole in ratchet 11 engagements lockings also, also promptly reach the locking ribbon.Though this shows that band sense parts of the present utility model also are to utilize principle of inertia, but it is different fully with the effect of traditional band sense inertia member, traditional band sense inertia member be only utilize its inertia induction drawstring acceleration/accel and act on this induction amount on the stop component directly or indirectly, and band sense parts of the present utility model are the inertia that utilizes the take-up spool of band stop gear, and need not to rise purely the inertance element of induction effect.New application just because of this principle of inertia, just can make winding up apparatus for safety belt in vehicles produce great improvement, bring to simplify the internal structure of an organization just as described abovely, increase reliability, especially significantly the consequence of cost-cutting estimates that its cost descends about 50% than traditional taking-up device.

Car sense portion's year 8 of the present utility model is to utilize the pendulum pin 82 that will have disk 80 to insert the pendulum pin-and-hole 85 of car sense retaining pawl 84 from the top, pendulum 81 is screwed on the screw thread of pendulum pin 82 lower ends from the below, again the hanging hole 86 of retaining pawl 84 is enclosed within on the right hanging column 14 on the mainboard 10, the hanging hole 83 of pendulum is hung over constitutes on the left hanging column 13 on the mainboard 10.

When pendulum 81 during to the swing of any direction, the disk 80 of its upper end will be depressed on the left flat end of retaining pawl 84, retaining pawl 84 is rotated counterclockwise around hanging column 14, when in a single day the upper end retaining pawl contacts with the tooth of ratchet 22, can stop the rotation of take-up spool 2, and make ratchet around the swing of pawl point, when swinging to certain position, specific interior ratchet engagement on certain tooth on the ratchet 22 and the mainboard, when ratchet when this tooth continues swing, ratchet 22 is thrown off with retaining pawl 54, the tooth on the ratchet 22 then with mainboard 10 on interior ratchet 11 engagement and lockings.

Fig. 2 is the part longitudinal sectional view of this taking-up device, its legend and a kind of assembled state (not putting into ribbon) that quite is used to represent taking-up device in kind, and wherein the hole 16 on the winding storehouse 1 is used for fixing with automotive interior.

When making the interior ratchet 11 engagement lockings on ratchet 21,22 mainboards stressed rationally, according to a kind of preferred implementing form of the present utility model, the number of interior ratchet 11 is preferably 6 between 4 to 8.

Cassette holder in the foregoing description (mainboard), ratchet and take-up spool can be by mode machine-shapings such as aluminum alloy pressure injection or cast, or use fiber-reinforced plastic injection moulding, other parts can use with traditional taking-up device in make with the base part identical materials.

Obviously, can also make various remodeling under design of the present utility model, for example: wherein inductive means includes only band sense parts, does not comprise car sense parts, and promptly taking-up device is pure band sense formula taking-up device; Except that two ratchets of above-mentioned symmetry, also can only adopt the form of monolateral ratchet in the locking component; And retracing spring can all be provided with in two mainboards, also can only be arranged in the mainboard of no wind spring one side.

Principal feature with the utility model bandage-winder is summarized as follows at last: 1) take-up spool, the locking component and the band sense inertia member trinity; 2) be with the sense parts except that utilizing backrush power and the inertia of above-mentioned trinity parts and the mechanical relationship of rotor inertia that keeps also having utilized the rotator inertia wind spring, with only the mode of utilization maintenance rotator inertia is different in the tradition; 3) car sense parts can directly act on locking component.

Claims (5)

1, a kind of winding up apparatus for safety belt in vehicles, it is by ribbon, take-up spool, the winding storehouse, wind spring, composition such as inductive means and locking component, it is characterized in that: the parts that induction ribbon (3) is pulled out acceleration/accel are to be fixedly mounted on the ratchet (21 of this shaft end by circular roll tape spool (2) and at least one, 22) constitute, described circular roll tape spool (2) is through both sides, winding storehouse (1) mainboard (10 movably, 10 ') oval axis hole (12) in, oblique upper at the inboard described oval axis hole of mainboard (12) is provided with interior ratchet (11), it and described ratchet (21,22) form locking component, just often, take-up spool (2) and ratchet (21,22) utilize gravity inertial and act at least one retracing spring (15) on the take-up spool (2) take-up spool (2) is remained on the primary importance (A) in the axis hole (12), the above ratchet (21 in this position, 22) do not contact with interior ratchet (11), and take-up spool (2) can rotate in this position (A), when sensing ribbon (3) certain acceleration, the primary importance (A) of take-up spool (2) from axis hole (12) moves on the second place (B), in the outer ratchet on the above ratchet of this position (B) (21,22) is locked at interior ratchet (11) on the mainboard.

2, winding up apparatus for safety belt in vehicles according to claim 1 is characterized in that: wherein inductive means includes only band sense parts (2,21,22).

3, winding up apparatus for safety belt in vehicles according to claim 1, it is characterized in that: wherein inductive means removes band sense parts (2,21,22) outside, also have car sense parts (8), these car sense parts (8) are to utilize the pendulum pin (82) that will have disk (80) to insert the pendulum pin-and-hole (85) of car sense retaining pawl (84) from the top, pendulum (81) is screwed on the screw thread of pendulum pin (82) lower end from the below, again the hanging hole (86) of retaining pawl (84) is enclosed within on the right hanging column (14) on the mainboard (10), the hanging hole (83) of pendulum is hung over another left hanging column (13) on the mainboard (10) go up and constitute.

4, winding up apparatus for safety belt in vehicles according to claim 3 is characterized in that: wherein said car sense retaining pawl (84) can directly act on the tooth of ratchet (22).

5, winding up apparatus for safety belt in vehicles according to claim 1 is characterized in that: the number of the interior ratchet (11) on the described mainboard is preferably 6 between 4 to 8.

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