CN105711542A - Safety belt retractor and safety belt device - Google Patents
Safety belt retractor and safety belt device Download PDFInfo
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- CN105711542A CN105711542A CN201410734394.3A CN201410734394A CN105711542A CN 105711542 A CN105711542 A CN 105711542A CN 201410734394 A CN201410734394 A CN 201410734394A CN 105711542 A CN105711542 A CN 105711542A
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- claw
- webbing retractor
- rotating disk
- spool
- locking wheel
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Abstract
The invention discloses a safety belt retractor and a safety belt device. The safety belt retractor comprises a frame, a casing, a reel, a locking wheel, a turntable, a reduction gear assembly and a claw. A hollow cavity is defined by the casing and the frame. The reel is arranged in the frame, and a rotating shaft at one end of the reel extends into the hollow cavity and is provided with an engaged tooth part. The rotating shaft is sleeved with the locking wheel and the turntable externally, and the turntable is provided with two bulges. The reduction gear assembly is engaged with the engaged tooth part and the turntable respectively. The claw is rotationally arranged between a locking position and an unlocking position on the casing and is provided with a first matching part and a second matching part, the first matching part is used for braking the locking wheel when the claw is in the locking position, the first matching part is not matched with the locking wheel when the claw is in the unlocking position, and the two bulges are switched to be matched with the second matching part so as to trigger switching of the claw between the locking position and the unlocking position. The safety belt retractor according to the invention has the advantages that the structure is simple, component parts are few, the assembly is easy, the cost is low, and the pull-out length of a safety belt is limited within a preset length.
Description
Technical field
The present invention relates to vehicular field, especially relate to a kind of Webbing retractor and seat belt apparatus.
Background technology
The discloseder Webbing retractors of correlation technique have the mechanism of automatic locking safety belt, and the usual number of parts of these mechanisms is more, and structure is complicated, causes that the structure of whole Webbing retractor is too complicated, cost is high.
Document CN1493482A discloses a kind of Webbing retractor, this Webbing retractor is provided with ALR mechanism (i.e. automatic locking apparatus), ALR mechanism is made up of multiple parts such as ratchet, torsion spring, the first cam disc, the second cam disc, little gear and secondary gears, this mechanism can realize when all pull-outs from device of the seat belt in Webbing retractor, Webbing retractor enters ALR pattern, namely seat belt is only capable of to the internal backrush of Webbing retractor, and can not pull out in Webbing retractor.This mechanism element quantity is more, and structure is not to be modified.
Summary of the invention
The application is based on inventor to the discovery of following facts and problem and what understanding was made:
There is number of parts problem many, baroque in the automatic locking apparatus of the Webbing retractor in correlation technique.For this, it is desirable to provide a kind of Webbing retractor, the automatic locking apparatus number of parts of this Webbing retractor is few, simple in construction, in order to reduce cost.
The present invention also resides in a kind of seat belt apparatus with above-mentioned Webbing retractor of offer.
Webbing retractor according to embodiments of the present invention, including: framework；Shell, described shell is located on the sidewall of described framework, limits cavity between the sidewall of described shell and described framework；Spool, described spool is located in described framework and one end of described spool is configured to rotate axle, and described rotation axle stretches out from described framework and extend in described cavity, and described rotation axle has meshing teeth；Locking wheel, described locking wheel is outer to be enclosed within described rotation axle and between described meshing teeth and the described sidewall of described framework；Rotating disk, described rotating disk has centre bore, and described rotating disk is enclosed within described rotation axle by outside centre bore, and described rotating disk is provided with the projection of two spaced apart settings；Reduction gear component, the drivewheel of described reduction gear component engages with described meshing teeth, and the driven pulley of described reduction gear component engages with described rotating disk；Claw, described claw is rotatably arranged between lock position and unlocked position on described shell and is positioned at described cavity, described claw has the first auxiliary section and the second auxiliary section, first auxiliary section described in when described lock position coordinates so that described locking wheel stops operating with described locking wheel, first auxiliary section described in when described unlocked position coordinates so that described locking wheel and described rotation axle synchronous rotary with described locking wheel disengaging, said two is protruding and described second auxiliary section switching coordinates to trigger described claw and switches between described lock position and described unlocked position.
Webbing retractor according to embodiments of the present invention, by arranging rotating disk, reduction gear component and claw, the reduction gear component deceleration that rotates through making spool is transferred to rotating disk, and rotating disk is provided with two projections to coordinate with claw to switching when rotating disk rotates, with control claw with locking wheel coordinate or depart from cooperation, thus the pull-out length of seat belt is limited in predetermined length, realize seat belt AutoLock feature, and Webbing retractor simple in construction, component part is few, easily, processing cost is low in assembling.
Seat belt apparatus according to embodiments of the present invention, including seat belt Webbing take-up device according to embodiments of the present invention and seat belt, the described safe roll coil of strip is located on the spool of described seat belt Webbing take-up device.
Seat belt apparatus according to embodiments of the present invention, number of parts is few, simple in construction, cost are low.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the sectional structure schematic diagram of Webbing retractor according to embodiments of the present invention；
Fig. 2 is that Fig. 1 centre circle shows D portion enlarged diagram；
Fig. 3 is the structural representation of a kind of spool according to embodiments of the present invention；
Fig. 4 is the structural representation of another kind of spool according to embodiments of the present invention；
Fig. 5 is side view when not installing automatic locking apparatus of the Webbing retractor according to embodiments of the present invention；
Fig. 6 is the structural representation of transmission lever according to embodiments of the present invention；
Fig. 7 is the side view when being mounted with automatic locking apparatus of the Webbing retractor according to embodiments of the present invention；
Fig. 8 is the structural representation of automatic locking apparatus according to embodiments of the present invention；
Fig. 9 is that Fig. 8 centre circle shows E portion enlarged diagram.
Accompanying drawing labelling:
Webbing retractor 100,
Framework 1, backboard 11, gripper shoe 12, through hole 13, ratchet hole 131,
Shell 2, cavity V, first support member the 21, first support slot 211, otch the 212, second support member the 22, second support slot 221, keeper 23, first surface S1, second surface S2, mainboard 241, circular trough 2411, side plate 242, pillar the 25, first fastener 26,
Spool 3, rotate axle 31, key block 311, end gear 32, meshing teeth 321, bright finish section 3211, profile of tooth section 3212, coordinate ring 322, groove 34, supported hole 35, cylindrical hole 36, connecting hole 37,
Locking wheel 4, spring 41, transmission lever 42, cam disc 42a, pin 42b, shifting chute 43, locking wheel ratchet 4a, wheel hub 44,
Rotating disk 5, centre bore 51, draw-in groove 52, protruding 53, locking projection 531, unlock protruding 532, ring gear 54,
Reduction gear component 6, drivewheel 61, driven pulley 62, mating holes 63,
Claw 7, body the 71, first auxiliary section 72, auxiliary section 74, latch the 721, second auxiliary section the 73, the 3rd, holding chamber P, elastomer block 741, pilot hole 75,
Support 8, trepanning 81, groove the 82, second fastener 83, chimb 84.
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to Fig. 1-Fig. 9, Webbing retractor 100 according to embodiments of the present invention is described.
Webbing retractor 100 according to embodiments of the present invention, as shown in Figure 1, Figure 2 and Figure 7, including: framework 1, shell 2, spool 3, locking wheel 4, rotating disk 5, reduction gear component 6 and claw 7.
Wherein, spool 3 is rotatably arranged in framework 1, and specifically, framework 1 is the mounting framework of whole Webbing retractor 100, and the opposing sidewalls of framework 1 is respectively equipped with a corresponding through hole 13.Spool 3 is used for winding seat belt (not shown go out), the pull-out rotarily driving seat belt of spool 3 or withdrawal, and the two ends of spool 3 construct one respectively and rotate axle 31.Webbing retractor 100 also includes housing unit; housing unit is fixed on framework 1 to support, to protect the component in Webbing retractor 100; on spool 3 two rotate axle 31 and stretch out from the corresponding through hole 13 in the opposing sidewalls of framework 1 respectively; two rotate axle 31 and are rotatably engaged respectively on housing unit, and namely housing unit can rotate by supporting reel 3 opposing frame 1.
Shell 2 includes in housing unit, and shell 2 is located on the sidewall of framework 1, and shell 2 is positioned at the outside of framework 1, limits cavity V between the sidewall of shell 2 and framework 1.One of them on spool 3 rotates axle 31 and stretches out from framework 1 and extend in cavity V, and this rotation axle 31 has meshing teeth 321.
With reference to Fig. 1 and Fig. 5, being enclosed within rotation axle 31 outside locking wheel 4, locking wheel 4 is between the sidewall of meshing teeth 321 and framework 1.Specifically, when locking wheel 4 is formed at locking wheel 4 and rotates axle 31 synchronous rotary, spool 3 is not produced to affect by locking wheel 4, and when locking wheel 4 relatively rotates with rotation axle 31, locking wheel 4 can locking spool 3, it may also be said that this locking 4 usual moment of wheel rotate integrally with spool 3, and lock wheel 4 under certain conditions and spool 3 can be stoped to rotate to seat belt pull-out direction.
It should be noted that lock the wheel 4 locking principle to spool 3 known by one skilled in the art, it is not especially limited here.As in some instances, Webbing retractor 100 also includes locking system (not shown go out), locking system starts when locking wheel 4 relatively rotates with spool 3, to stop spool 3 to rotate along the direction that seat belt pulls out, reaches the purpose avoiding seat belt to pull out further.
Specifically, locking system includes: lock and pawl, lock be located at spool 3 one end and with spool 3 synchronous rotary, in two through holes 13 on framework 1, at least one is ratchet hole 131, lock extend in ratchet hole 131, pawl is located on lock, and pawl is provided with the ratchet being suitable to be meshed with ratchet hole 131.Locking wheel 4 is connected with pawl by transmission lever 42, when locking wheel 4 and rotation axle 31 synchronous rotary, pawl is incorporated in lock, when locking wheel 4 rotates against with rotation axle 31, the locking wheel 4 driving relative spool 3 of transmission lever 42 rotates, and transmission lever 42 drives pawl around the center axis thereof of transmission lever 42 simultaneously.After the center axis thereof certain angle of the relative transmission lever 42 of pawl, the ratchet on pawl matches with ratchet hole 131, and lock stops operating, thus driving spool 3 to stop operating.Here, the structure and working principle of transmission lever 42 will be described further in specific embodiment below.
With reference to Fig. 1, Fig. 2, Fig. 7 and Fig. 8, rotating disk 5 has centre bore 51, and rotating disk 5 is by being enclosed within outside centre bore 51 on rotation axle 31, and rotating disk 5 is provided with the projection 53 of two spaced apart settings.The drivewheel 61 of reduction gear component 6 engages with meshing teeth 321, and the driven pulley 62 of reduction gear component 6 engages with rotating disk 5.Claw 7 is positioned at cavity V, claw 7 is rotatably arranged on shell 2 between lock position and unlocked position, claw 7 has the first auxiliary section 72 and the second auxiliary section 73, when lock position, the first auxiliary section 72 coordinates with locking wheel 4 so that locking wheel 4 stops operating, when unlocked position, the first auxiliary section 72 coordinates so that locking wheel 4 with locking wheel 4 disengaging and rotates axle 31 synchronous rotary, and two projections 53 switch with the second auxiliary section 73 to coordinate and switch between lock position and unlocked position triggering claw 7.
To sum up, rotating disk 5, reduction gear component 6 and claw 7 constitute the automatic locking apparatus (ALR) of Webbing retractor 100, two projections 53 on rotating disk 5 constitute the State Transferring of automatic locking apparatus and control contact, wherein, as shown in Figure 8, making the projection 53 that claw 7 turns to lock position with the second auxiliary section 73 after coordinating is locking projection 531, makes claw 7 turn to the projection 53 of unlocked position for unlocking protruding 532 after coordinating with the second auxiliary section 73.
Specifically, as shown in Figure 7 and Figure 8, spool 3 drives rotating disk 5 to rotate by reduction gear component 6, and the rotating speed of rotating disk 5 is less than the rotating speed of spool 3, and a part for the second auxiliary section 73 is between two projections 53.When spool 3 turns to a fixing turn to the direction that seat belt pulls out, rotating disk 5 also rotates (rotating in Fig. 6) along M direction along respective direction, locking projection 531 on rotating disk 5 moves to the second auxiliary section 73 place, if spool 3 continues to rotate to the direction of seat belt pull-out, then locking projection 531 stirs the second auxiliary section 73, claw 7 is made to turn to lock position (in Fig. 6 locking projection 531 stir the second auxiliary section 73 make claw 5 rotate) along N direction counterclockwise, thus the first auxiliary section 72 coordinates with locking wheel 4 with locking spool 3.Afterwards, after spool 3 turns to a fixing turn to the direction that seat belt is regained, rotating disk 5 also rotates (rotating in Fig. 6) along N direction along respective direction, unblock projection 532 on rotating disk 5 moves to the second auxiliary section 73 place, if spool 3 continues to rotate to the direction that seat belt is regained, then unlock protruding 532 and stir the second auxiliary section 73, make claw 7 turn to unlocked position (unlock in Fig. 6 protruding 532 stir the second auxiliary section 73 make claw 5 rotate along M direction clockwise), depart from coordinate to discharge spool 3 thus the first auxiliary section 72 takes turns 4 with locking.
It is to say, by arranging above-mentioned automatic locking apparatus, it may be achieved spool 3 is automatically locked upon calling a subroutine after the pull-out direction coiling multi-turn of seat belt, and after spool 3 is automatically locked upon calling a subroutine, spool 3 again after the withdrawal direction coiling multi-turn of seat belt again by automatic unlocking.It may also be said that after seat belt is drawn out to predetermined length, spool 3 is by automatic locking, and seat belt can not be further continued for pull-out, and when seat belt is to backrush around to certain length, spool 3 is again by automatic unlocking, and seat belt can pull out.
Thus, the length that seat belt pulls out in use is without departing from above-mentioned predetermined length, thus reaching to ensure the purpose of passenger, and this automatic locking apparatus simple in construction, component part is few, and easily, processing cost is low in assembling.It addition, use reduction gear component 6 to carry out deceleration transmission, spool 3 can be made to transmit accurate to the motion of rotating disk 5, it is ensured that automatic locking apparatus reliability of operation.
It addition, Webbing retractor 100 also includes emergency lock device (ELR), namely Webbing retractor 100 has two kinds of functional modes of ELR and ALR.
Specifically, exemplary and without limitation, emergency lock device (not shown go out) can include car induction device and band induction device etc..Pawl can be triggered during band induction device detection seat belt pull-out acceleration exception to be meshed with corresponding ratchet hole 131, thus stoping spool 3 to rotate to the pull-out direction of seat belt.Car induction device can detect angle of inclination and the acceleration etc. of vehicle, and when exception being detected, car induction device also can trigger pawl so that pawl is meshed with corresponding ratchet hole 131, thus stoping spool 3 to rotate to the pull-out direction of seat belt.It should be noted that the structure etc. of emergency lock device has been prior art, and it is well known for ordinary skill in the art, is not detailed herein.
Webbing retractor 100 according to embodiments of the present invention, by arranging rotating disk 5, reduction gear component 6 and claw 7, reduction gear component 6 deceleration that rotates through making spool 3 is transferred to rotating disk 5, and rotating disk 5 is provided with two projections 53 to coordinate with claw 7 to switching when rotating disk 5 rotates, 4 coordinate with locking wheel or depart from cooperation controlling claw 7, thus the pull-out length of seat belt is limited in predetermined length, realize seat belt AutoLock feature, and Webbing retractor 100 simple in construction, component part is few, easily, processing cost is low in assembling.
Specifically, as shown in Figure 1, framework 1 includes backboard 11 and two gripper shoes 12, two gripper shoes 12 are spaced apart and are set parallel to each other, it is connected to backboard 11 between two gripper shoes 12, being coaxially arranged with through hole 13 in two gripper shoes 12, the internal perisporium of at least one through hole 13 is provided with a circle ratchet to constitute above-mentioned ratchet hole 131, and framework 1 can be fixed on vehicle body by connectors such as screws.
In certain embodiments, as shown in Figure 1 and Figure 5, locking wheel 4 is arranged on the outside of gripper shoes 12 of framework 1, and locking wheel 4 is formed as bigger than the outer end diameter of spool 3 discoid.As in figure 2 it is shown, the center of locking wheel 4 is provided with the wheel hub 44 being coaxially disposed, wheel hub 44 is cylindrical, and the rotation axle 31 of spool 3 is inserted in wheel hub 44, and locking is taken turns 4 coaxially and be freely to rotate installed to spool 3 one and rotated on axle 31.
Specifically, as it is shown in figure 5, locking wheel 4 is connected by spring 41 with spool 3, under the effect of the elastic force of spring 41, locking wheel 4 and spool 3 synchronous rotary, when locking wheel 4 is locked by claw 7, locking wheel 4 and spool 3 can overcome the elastic force of spring 41 to rotate against.When locking wheel 4 rotates relative to spool 3, the locking system in Webbing retractor 100 can be triggered with locking spool 3.
More specifically, as Figure 3-Figure 4, the end face connecting locking wheel 4 of spool 3 is provided with groove 34, locking wheel 4 on the end face of spool 3, be provided with the baffle plate (not shown go out) that spool 3 extends, spring 41 is provided with in groove 34 and the two ends of spring 41 are only against on the sidewall of baffle plate and groove 34 respectively, so, under the effect of spring 41 and baffle plate, locking wheel 4 and spool 3 synchronous rotary, when claw 7 engages with locking wheel 4, locking wheel 4 also can overcome the elastic force of spring 41 to relatively rotate with spool 3.
Certainly the invention is not restricted to this, for instance, keep the parts of locking wheel 4 and spool 3 synchronous rotary to be alternatively torsion spring, torsion spring can be enclosed within outward on rotation axle 31, and the two ends of torsion spring are only against spool 3 respectively and locking is taken turns on 4.When locking wheel 4 relative spools 3 are static, torsion spring is in the raw.When locking wheel 4 rotates relative to spool 3, torsion spring is compressed or is stretched, and now torsion spring is to locking wheel 4 generation revolving force, and revolving force restriction torsion spring rotates relative to spool 3.
In some instances, as shown in figures 3 to 6, transmission lever 42 is formed as cylindric, the relevant position of spool 3 is formed on the rotation axis direction be parallel to spool 3 cylindrical hole 36 of through spool 3, transmission lever 42 is after cylindrical hole 36, and the two ends of transmission lever 42 connect locking wheel 4 and pawl respectively.When spool 3 rotates, spool 3 drives transmission lever 42 to rotate around the rotation axis of spool 3, and transmission lever 42 is relative to the invariant position of spool 3.
In the concrete example of Fig. 5 and Fig. 6, one end towards locking wheel 4 of transmission lever 42 is formed as cam disc 42a, the central axes of the center of circle of the basic circle of cam disc 42a and transmission lever 42, being formed at the upwardly extending pin 42b in the side being parallel to transmission lever 42 central axis on the end face of the contiguous locking wheel 4 of cam disc 42a, locking wheel 4 is provided with the shifting chute 43 matched with pin 42b.Now, lock wheel 4, spool 3, cam disc 42a, pin 42b, be configured to crank and rocker mechanism.When locking wheel 4 and spool 3 synchronous rotary, the relative spool 3 of transmission lever 42 is static.When locking wheel 4 rotates against with spool 3, locking wheel 4 drive pin 42b moves along shifting chute 43 so that the center axis thereof of the relative transmission lever 42 of pin 42b, thus driving the center axis thereof of the relative transmission lever 42 of transmission lever 42.Owing to the other end of transmission lever 42 is connected with pawl, when the center axis thereof of the relative transmission lever 42 of transmission lever 42, transmission lever 42 drives pawl to rotate relative to spool 3, thus pawl stretches out in lock and matches with ratchet hole 131.
Specifically, shifting chute 43 forms the precalculated position at locking wheel 4, and the shape of shifting chute 43 generally ヘ shape, when locking wheel 4 relatively rotates with spool 3, the spring 41 keeping locking wheel 4 and spool 3 unitary rotation is compressed, and pin 42b drives pawl from inside to outside to move to the position engaged with ratchet hole 131 along shifting chute 43.
Alternatively, as shown in Figure 5 and Figure 8, locking wheel 4 forms external toothing along its outer Monday of circle, and the first auxiliary section 72 forms the latch 721 that can coordinate with the external toothing of locking wheel 4 in the side near locking wheel 4.Advantageously, as shown in Figure 5, periphery wall one circle of locking wheel 4 is ratchet 4a, coordinate for click between locking wheel 4 and the first auxiliary section 72, thus the first auxiliary section 72 is only capable of locking wheel 4 is carried out monodirectional locking, namely automatic locking apparatus rotates to the direction that seat belt pulls out for tightening spool 3, thus ensure that passenger is had certain protective role by Webbing retractor 100, and avoid other devices are produced unfavorable interference, such as some Webbing retractors 100 also include pre-tightening apparatus (not shown go out), pre-tightening apparatus can when emergency pretension seat belt, namely pre-tightening apparatus can drive spool 3 to rotate to the direction that seat belt reclaims.
In certain embodiments, as depicted in figs. 1 and 2, Webbing retractor 100 also includes the bearing 8 for supporting meshing teeth 321, and bearing 8 is located on the sidewall of framework 1, and shell 2 is fixed on bearing 8.The setting of bearing 8 provides the support force that spool 3 rotates, it is ensured that spool 3 stability of rotation, reliable.
Wherein, rotating disk 5 is respectively provided at the both sides of bearing 8 with locking wheel 4, and here, locking wheel 4 and spool 3 are located at the side of bearing 8, rotating disk 5 and reduction gear component 6, claw 7 are located at the opposite side of bearing 8, and meshing teeth 321 through bearing 8 and connects reduction gear component 6 from the side of locking wheel 4.Namely the automatic locking apparatus of Webbing retractor 100 is arranged between bearing 8 and shell 2.
In certain embodiments, Webbing retractor 100 also includes power spring (not shown go out), and the axle 31 that rotates of spool 3 other end coordinates often to drive spool 3 towards the direction rotation that seat belt is regained with power spring.Alternatively, power spring is wind spring.Certainly, power spring is one can be broadly interpreted as the original paper as pushing mechanism, and power spring is not limited to certain ad hoc structure form.
In certain embodiments, as shown in figs 2-4, rotate axle 31 and be coaxially provided integrally at the center, end of spool 3.Specifically, as shown in Figures 2 and 3, the free end end face rotating axle 31 is provided with supported hole 35, and shell 2 is provided with the pillar 25 that spool 3 extends, and pillar 25 is rotatably engaged in supported hole 35, and thus, pillar 25 can rotate by supporting reel 3.
In certain embodiments, rotating on axle 31 as it is shown on figure 3, meshing teeth 321 is one-body molded, thus, Webbing retractor 100 constitutional detail is few, and assembling is easily.
In other specific embodiments, as shown in Figure 1 and Figure 4, Webbing retractor 100 also includes end gear 32, is enclosed within the free end rotating axle 31 outside end gear 32, end gear 32 limits meshing teeth 321, and end gear 32 and spool 3 keep rotating integrally coaxially.So, end gear 32 is smaller, it is simple to the processing and manufacturing of meshing teeth 321.
When being provided with end gear 32, as in figure 2 it is shown, supported hole 35 is formed in end gear 32.
Specifically, as it is shown in figure 1, end gear 32 is cylindrical, with rotation axle 31 can not mode be combined together coaxially in relative rotation.
More specifically, as shown in Figure 2 and Figure 4, rotate axle 31 and be provided with key block 311, end gear 32 is provided with the connecting hole 37 of circle, and the inner surface of connecting hole 37 is also formed with keyway (not shown go out), rotation axle 31 is inserted in connecting hole 37 and key block 311 coordinates in keyway, thus ensureing to rotate axle 31 and end gear 32 unitary rotation.
In some instances, as shown in Figure 2, meshing teeth 321 includes bright finish section 3211 and profile of tooth section 3212, bright finish section 3211 is formed as cylindrical, bearing 8 is provided with trepanning 81, bright finish section 3211 coordinates in trepanning 81, and profile of tooth section 3212 stretches out from one end away from spool 3 of bright finish section 3211, and the outer peripheral face of profile of tooth section 3212 is formed as toothed surface.Thus, bearing 8 can rotate by supporting base end portion gear 32.
Specifically, as in figure 2 it is shown, end gear 32 also includes coordinating ring 322, cooperation ring 322 to be located at the periphery of the end face towards spool 3 of meshing teeth 321 along upper, coordinate ring 322 to be clamped between the wheel hub 44 of bearing 8 and locking wheel 4, coordinate ring 322 that the assembling of end gear 32 can be facilitated to position.
Alternatively, end gear 32 is resin piece.
In certain embodiments, as shown in Figure 2 and Figure 7, rotating disk 5 is provided with ring gear 54, drivewheel 61 and driven pulley 62 and is coaxially disposed and synchronous rotary, and drivewheel 61 engages with meshing teeth 321, and driven pulley 62 engages with ring gear 54.
Wherein, arranging ring gear 54 on rotating disk 5 to engage with reduction gear component 6, it is ensured that in limited space, rotating disk 5 upper ring gear larger in size, consequently facilitating increase the speed reducing ratio rotated between axle 31 and rotating disk 5.Drivewheel 61 and driven pulley 62 are coaxially disposed and synchronous rotary, facilitate the processing and manufacturing of reduction gear component 6, and be easily installed.
In the example of Fig. 7 and Fig. 8, rotating disk 5 is disc, the conglobate centre bore 51 of longitudinal central portion shape at rotating disk 5, and rotating disk 5 has certain reciprocating stroke, and rotating disk 5 defines two projections 53 in the pre-position of periphery.
Alternatively, rotating disk 5 is resin.
Specifically, reduction gear component 6 is bidentate gear member, and bidentate gear member is integrally formed by the gear wheel of major diameter and the little gear of minor diameter, and wherein, gear wheel is the drivewheel 61 coordinated with meshing teeth 321, and little gear is the driven pulley 62 coordinated with rotating disk 5.When end gear 32 rotates, the bull gear drive of Double-gear drives pinion rotation, then leads to rotating disk 5 and rotates, thus realizing the rotating with a certain proportion of deceleration spool 3 from transmission to rotating disk 5.
In certain embodiments, as shown in Figure 8, shell 2 is provided with keeper 23, keeper 23 limits claw 7 switching between the lock position and the non-unlocked position engaged that engage with locking wheel 4 conditionally, and the restriction effect of keeper 23 namely just can be overcome to turn to another position when claw 7 is subject to bigger motive force.
Specifically, claw 7 being additionally provided with elastomer block 741, keeper 23 is arranged on when claw 7 rotates in the track stroke of elastomer block 741 and hinders the rotation of claw 7.Wherein, elastomer block 741 is rolling to each side at keeper 23 when claw 7 rotates, thus avoiding claw 7 when not by External Force Acting 4 to rotate relative to locking wheel, namely keeper 23 and elastomer block 741 coordinate the location status that can keep claw 7.
Wherein, elastomer block 741 is elastic component, when such second auxiliary section 73 is stirred by protruding 53, elastomer block 741 is squeezed and deforms and move to the opposite side of keeper 23 from the side of keeper 23, elastomer block 741 recovers again shape after moving to the opposite side of keeper 23, and such claw 7 is maintained at this state.
More specifically, as shown in Figure 8, keeper 23 includes spaced first surface S1 and second surface S2 in the rotation direction of claw 7, claw 7 also includes the 3rd auxiliary section 74, it is provided with holding chamber P in 3rd auxiliary section 74, the internal perisporium of holding chamber P is provided with elastomer block 741, and when lock position and unlocked position, elastomer block 741 all contacts cooperation with one of them of first surface S1 and second surface S2.
Alternatively, as shown in Figure 8, keeper 23 is " V " shape.
Here, stretching at least partially in holding chamber P to coordinate with elastomer block 741 of keeper 23,3rd auxiliary section 74 is arranged out holding chamber P, the sidewall of holding chamber P can limit the angular range that claw 7 rotates, avoid claw 7 rotation amplitude excessive and depart from and the coordinating of the projection 53 on rotating disk 5, thus ensureing the operational reliability of automatic locking apparatus.
In the example depicted in fig. 8, claw 7 includes body the 71, first auxiliary section 72, the second shaft-like auxiliary section 73 and swallow-tailed 3rd auxiliary section 74, first auxiliary section 72 vertically extends to locking wheel 4 from one end of body 71, and first auxiliary section 72 be positioned at locking wheel 4 outside, being formed in the side near locking wheel 4 can with the ratchet 7a of the locking wheel 4 dentation seamed edge engaged, and dentation seamed edge is latch 721.The 3rd generally triangular hollow and thin-walled structure in auxiliary section 74, i.e. holding chamber P through claw 7 on the pivot axis direction of claw 7, the sidewall of the pivot axis away from claw 7 of holding chamber P is formed the elastomer block 741 that a direction towards the pivot axis of claw 7 extends.Second auxiliary section 73 extends from body 71 to the space between rotating disk 5 and bearing 8, and extends on the track stroke of rotation of two projections 53 of rotating disk 5.
Further, support 8 groove 82 that to be provided with on the thickness direction of support 8 through, the first auxiliary section 72 through groove 82 to coordinate with locking wheel 4.Alternatively, groove 82 is fan-shaped.
In certain embodiments, when the seat belt on spool 3 is close to when all being pulled out, locking on rotating disk 5 protruding 531 pushes up the second auxiliary section 73 to claw 7, along with seat belt is drawn out further, after the load at this place increases to certain value, there is elastic deformation in the 3rd auxiliary section 74 of claw 7, thus allowing claw 7 to rotate, claw 7 turns to, from the locking wheel 4 non-unlocked positions engaged, the lock position that claw 7 engages with locking wheel 4, Webbing retractor 100 enters ALR pattern, namely spool 3 is only capable of rotating along seat belt to the direction of the internal backrush of Webbing retractor 100, and can not rotate backward.When spool 3 rotates along seat belt to the direction of the internal backrush of Webbing retractor 100, end gear 32, rotation direction opposite direction when reduction gear component 6 and rotating disk 5 all pull out to Webbing retractor 100 is outside with seat belt rotates, when after the backrush seat belt of predetermined length on spool 3, the another projection 532 that unlocks on rotating disk 5 is by withstanding the second auxiliary sections 73 of claw 7, the 3rd auxiliary section 74 causing claw 7 occurs elastic deformation force claw 7 to forward to and lock the wheel 4 non-unlocked positions engaged, Webbing retractor 100 enters ELR pattern, ensure that Webbing retractor 100 in case of emergency protects the purpose of occupant safety.
It should be noted that Webbing retractor 100 generally has emergency lock device and automatic locking apparatus simultaneously, namely Webbing retractor 100 has two kinds of functions of ELR and ALR simultaneously, and ELR refers to emergency lock, and ALR refers to automatic locking.It is possible not only to switching between two kinds of functions, and carrys out locking spool 3 each through locking system.
According to laws and regulations requirement, the detection of emergency lock device performance carries out when needing to remain certain length seat belt inside Webbing retractor 100.And the remaining accurate scaling method of belt length is that after being completely drawn out from seat belt, backrush calculates again, but owing to Webbing retractor 100 is provided with automatic locking apparatus, therefore after seat belt is completely drawn out, namely Webbing retractor 100 enters ALR pattern, seat belt cannot normally be extracted out, emergency lock device also just cannot be carried out performance detection, and this just adds difficulty to Webbing retractor 100 on-line checking in an assembling process.
For the problem solving emergency lock device on-line checking, automatic locking apparatus can individually assemble and form module, namely rotating disk 5, reduction gear component 6 and claw 7 are each provided on shell 2, and rotating disk 5, reduction gear component 6 and claw 7 can be pre-assembled on shell 2 and form independent module.Then Webbing retractor 100 is after completing on-line checking to emergency lock device, then is assembled on Webbing retractor 100 by modular automatic locking apparatus.
It addition, shell 2 and bearing 8 are clasped.Thus, the installation of shell 2 is simple, quick, thus improving the efficiency of assembling of Webbing retractor 100.Additionally, snapping connection so that shell 2 is in detachable state, so, automatic emergency device can be detachably arranged on bearing 8 with shell 2, consequently facilitating the safety of automatic emergency device and maintenance, and the problem efficiently solving the assembling in the assembling process of Webbing retractor 100 and on-line checking.
In some concrete examples, as shown in Figure 8 and Figure 9, shell 2 is provided with the first support member 21, the periphery wall of the first support member 21 is provided with the first support slot 211, and a part for the first support member 21 is centrally located in hole 51 so that the part of the contiguous centre bore 51 of rotating disk 5 is rotatably arranged in the first support slot 211.
That is, centre bore 51 overcoat of rotating disk 5 is on the first support member 21 of shell 2, the outer peripheral face of the first support member 21 is provided with the first support slot 211 inwardly concaved, so, after being enclosed within the first support member 21 outside rotating disk 5, being partially submerged into the first support slot 211 of the contiguous centre bore 51 of rotating disk 5.Thus, rotating disk 5 can pass through the first support member 21 and be rotatably arranged on shell 2, and the axial rotation that the first support member 21 is rotating disk 5 provides support force, and rotating disk 5 not easily departs from from shell 2, it is ensured that the reliability that rotating disk 5 connects.
Specifically, the first support member 21 is elastic component, and rotating disk 5 is when mounted, it is only necessary to just to after the first support member 21, rotating disk 5 is pressed lower rotary table 5, thus, and rotating disk 5 easy for installation, quick.
Advantageously, the first support member 21 is provided with multiple otch 212, consequently facilitating the first support member 21 stress deformation, facilitates the installation of rotating disk 5.
Alternatively, the first support member 21 is resin piece, and still optionally further, the first support member 21 and shell 2 are formed in one part.
Advantageously, as it is shown in figure 9, the first support member 21 is formed as circular arc, the radius size of the first support member 21 is substantially equivalent to the radius size of centre bore 51.
Alternatively, as it is shown in figure 9, the end face towards framework 1 of rotating disk 5 is provided with the first draw-in groove 52 arranged around centre bore 51, the free end of the first support member 21 is placed in the first draw-in groove 52.
It is to say, the portion size of the contiguous framework 1 of centre bore 51 increases constitutes the first draw-in groove 52, forming step surface in centre bore 51, the free end of the first support member 21 is only against on step surface.Thus, first support member 21 coordinates with step surface and can prevent rotating disk 5 from coming off from shell 2, and first the part stretched out from the side towards framework 1 of centre bore 51 of support member 21 shorter, even the first support member 21 cannot stretch out from the side towards framework 1 of centre bore 51, avoid the first support member 21 to produce to interfere to other components, facilitate implementation the compact conformation of Webbing retractor 100, size reduction.
In certain embodiments, as shown in Figure 8, shell 2 is provided with the second support member 22, and claw 7 is provided with pilot hole 75, and claw 7 is enclosed within the second support member 22 by pilot hole 75 is outer rotationally.Specifically, pilot hole 75 is formed on body 71.
It is to say, pilot hole 75 overcoat of claw 7 is on the second support member 22 of shell 2, thus, claw 7 can pass through the second support member 22 be rotatably arranged on shell 2, and claw 7 install simple, easy.
Specifically, the periphery wall of the second support member 22 is provided with the second support slot 221, and the part of the contiguous pilot hole 75 of claw 7 is located in the second support slot 221, thus preventing claw 7 from coming off from shell 2.
More specifically, the second support member 22 is elastic component, claw 7 is when mounted, it is only necessary to just to after the second support member 22, pilot hole 75 is pressed claw 7, and thus, claw 7 is easy for installation, quick.
Alternatively, the second support member 22 is resin piece, and still optionally further, the second support member 22 and shell 2 are formed in one part.
In certain embodiments, reduction gear component 6 is rotatably supported on shell 2.
Specifically, shell 2 is provided with the 3rd support member (not shown go out), and reduction gear component 6 is provided with mating holes 63, and reduction gear component 6 is enclosed within the 3rd support member by mating holes 63 is outer rotationally.Here, the structure of the 3rd support member and the second support member 22 is substantially the same, and the shape of the shape of mating holes 63 and pilot hole 75 is also substantially the same, and is not detailed herein.
Further, the end face towards framework 1 of reduction gear component 6 is provided with the second draw-in groove arranged around mating holes 63, and the free end of the 3rd support member is placed in the second draw-in groove.This prevents reduction gear component 6 to come off from shell 2, and the free end of the 3rd support member can be accommodated in mating holes 63, it is to avoid rotating disk 5 is produced to interfere by the 3rd support member, it is simple to realize the compact conformation of Webbing retractor 100, size reduction.
Alternatively, the 3rd support member is resin piece, and still optionally further, the 3rd support member and shell 2 are formed in one part.
In some concrete examples, as shown in Figure 1, Figure 2, shown in Fig. 8, shell 2 includes mainboard 241 and side plate 242, side plate 242 extends along the periphery vertically framework 1 of mainboard 241, rotating disk 5 and claw 7 are arranged on mainboard 241, and side plate 242 is connected on bearing 8, and side plate 242 snaps connection on bearing 8.The structure of shell 2 is the space that reduction gear component 6, rotating disk 5 and claw 7 provide rotatable movement, and can prevent coming off of reduction gear component 6, rotating disk 5 and claw 7.
Specifically, the direction that a part for mainboard 241 is directed away from side plate 242 is recessed to form circular trough 2411, reduction gear component 6 be contained in circular trough 2411 at least partially, thus, facilitate reduction gear component 6 installation location.
More specifically, as shown in Figure 8, the appearance profile of shell 2 is substantially formed by stacking by a great circle, a roundlet and a rectangle, and big circular portion is used for installing rotating disk 5, and little circular portion is used for installing reduction gear component 6, and rectangle part is used for installing claw 7.
Further, as shown in Figure 7 and Figure 8, side plate 242 is provided with the first fastener 26, and bearing 8 is provided with the second fastener 83 coordinated with the first fastener 26.Advantageously, bearing 8 being provided around the chimb 84 that trepanning 81 is arranged, the second fastener 83 is provided with on chimb 84.Alternatively, chimb 84 is irregular shape.
In some instances, as shown in Figure 7 and Figure 8, end gear 32, bearing 8, reduction gear component 6, rotating disk 5, claw 7 and shell 2 are all formed from a resin, thus alleviating the weight of Webbing retractor 100, simplify the structure of Webbing retractor 100, reduce the cost of Webbing retractor 100.
In this example, shell 2 is provided with the first support member the 21, second support member 22 and the 3rd support member 23, and rotating disk 5, reduction gear component 6 and claw 7 can be pre-assembled on shell 2, and will not come off easily, and therefore becoming one can the module of assembled in advance.In this example, automatic locking apparatus is fixed on the second fastener 83 that the irregular convex company 84 of bearing 8 is arranged above with by some first fasteners 26 on shell 2.
Seat belt apparatus according to embodiments of the present invention, including Webbing retractor 100 according to the above embodiment of the present invention and seat belt, the safe roll coil of strip is located on the spool 3 of Webbing retractor 100.
Seat belt apparatus according to embodiments of the present invention, owing to being provided with the Webbing retractor 100 of above-described embodiment, thus seat belt apparatus number of parts is few, simple in construction and cost low.
In describing the invention, it will be appreciated that, term " " center ", " length ", " thickness ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axially ", " radially ", " circumference " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be for only for ease of description the present invention and simplify describe; rather than instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include one or more these features.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or integral；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be connection or the interaction relationship of two elements of two element internals.For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can include the first and second features and directly contact, it is also possible to include the first and second features and be not directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include fisrt feature directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principles of the invention and objective, the scope of the present invention is limited by claim and equivalent thereof.
Claims (13)
1. a Webbing retractor, it is characterised in that including:
Framework；
Shell, described shell is located on the sidewall of described framework, limits cavity between the sidewall of described shell and described framework；
Spool, described spool is located in described framework and one end of described spool is configured to rotate axle, and described rotation axle stretches out from described framework and extend in described cavity, and described rotation axle has meshing teeth；
Locking wheel, described locking wheel is outer to be enclosed within described rotation axle and between described meshing teeth and the described sidewall of described framework；
Rotating disk, described rotating disk has centre bore, and described rotating disk is enclosed within described rotation axle by outside centre bore, and described rotating disk is provided with the projection of two spaced apart settings；
Reduction gear component, the drivewheel of described reduction gear component engages with described meshing teeth, and the driven pulley of described reduction gear component engages with described rotating disk；
Claw, described claw is rotatably arranged between lock position and unlocked position on described shell and is positioned at described cavity, described claw has the first auxiliary section and the second auxiliary section, first auxiliary section described in when described lock position coordinates so that described locking wheel stops operating with described locking wheel, first auxiliary section described in when described unlocked position coordinates so that described locking wheel and described rotation axle synchronous rotary with described locking wheel disengaging, said two is protruding and described second auxiliary section switching coordinates to trigger described claw and switches between described lock position and described unlocked position.
2. Webbing retractor according to claim 1, it is characterised in that also include end gear, is enclosed within outside described end gear on the free end of described rotation axle, and described end gear limits described meshing teeth.
3. Webbing retractor according to claim 1, it is characterized in that, described rotating disk is provided with ring gear, described drivewheel and described driven pulley and is coaxially disposed and synchronous rotary, described drivewheel engages with described meshing teeth, and described driven pulley engages with described ring gear.
4. Webbing retractor according to claim 1, it is characterised in that described locking wheel coordinates for click with between described first auxiliary section.
5. Webbing retractor according to claim 1, it is characterized in that, described shell is provided with the first support member, the periphery wall of described first support member is provided with the first support slot, and a part for described first support member is positioned at described centre bore so that the part of the described centre bore of the vicinity of described rotating disk is rotatably arranged at described first support slot.
6. Webbing retractor according to claim 5, it is characterised in that the end face towards described framework of described rotating disk is provided with the first draw-in groove arranged around described centre bore, and the free end of described first support member is placed in described first draw-in groove.
7. Webbing retractor according to claim 1, it is characterised in that described shell is provided with the second support member, described claw is provided with pilot hole, and described claw is enclosed within described second support member by described pilot hole is outer rotationally.
8. Webbing retractor according to claim 7, it is characterised in that the periphery wall of described second support member is provided with the second support slot, the part of the described pilot hole of vicinity of described claw is located in described second support slot.
9. Webbing retractor according to claim 1, it is characterized in that, described shell is provided with keeper, described keeper includes spaced first surface and second surface in the rotation direction of described claw, described claw also includes the 3rd auxiliary section, it is provided with holding chamber in described 3rd auxiliary section, the internal perisporium of described holding chamber is provided with elastomer block, when described lock position and described unlocked position, described elastomer block all contacts cooperation with one of them of described first surface and described second surface.
10. Webbing retractor according to claim 1, it is characterised in that described reduction gear component is rotatably supported on described shell.
11. Webbing retractor according to claim 1, it is characterised in that also include the bearing for supporting described meshing teeth, described bearing is located on the sidewall of described framework, and described shell is fixed on described bearing.
12. Webbing retractor according to claim 11, it is characterised in that described shell and described bearing are clasped.
13. a seat belt apparatus, it is characterised in that including:
Webbing retractor according to any one of claim 1-12；
Seat belt, the described safe roll coil of strip is located on the spool of described peace Webbing retractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734394.3A CN105711542B (en) | 2014-12-04 | 2014-12-04 | Seat belt retractor and seat belt apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734394.3A CN105711542B (en) | 2014-12-04 | 2014-12-04 | Seat belt retractor and seat belt apparatus |
Publications (2)
| Publication Number | Publication Date |
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| CN105711542A true CN105711542A (en) | 2016-06-29 |
| CN105711542B CN105711542B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410734394.3A Active CN105711542B (en) | 2014-12-04 | 2014-12-04 | Seat belt retractor and seat belt apparatus |
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| Country | Link |
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| CN (1) | CN105711542B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353306A (en) * | 2018-12-06 | 2019-02-19 | 湖北科技学院 | A kind of automobile equipped with the safety belt with pooling feature |
| CN113772132A (en) * | 2021-09-16 | 2021-12-10 | 北京卫星环境工程研究所 | Portable safety belt with adjustable length for extra-cabin maintenance |
| CN114042265A (en) * | 2021-11-18 | 2022-02-15 | 广东电网有限责任公司江门供电局 | Novel safety belt device |
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| US6499554B1 (en) * | 1999-08-06 | 2002-12-31 | Hideaki Yano | Seat belt retractor |
| CN1493482A (en) * | 2002-08-29 | 2004-05-05 | 株式会社东海理化电机制作所 | Safety belt contracting device |
| CN101254779A (en) * | 2007-03-01 | 2008-09-03 | 株式会社东海理化电机制作所 | Webbing retractor |
| CN101426672A (en) * | 2006-04-20 | 2009-05-06 | 高田株式会社 | Seat belt retractor and seat belt device |
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| US5390873A (en) * | 1991-04-11 | 1995-02-21 | Takata Corporation | Seat belt retractor |
| US6499554B1 (en) * | 1999-08-06 | 2002-12-31 | Hideaki Yano | Seat belt retractor |
| CN1493482A (en) * | 2002-08-29 | 2004-05-05 | 株式会社东海理化电机制作所 | Safety belt contracting device |
| CN101426672A (en) * | 2006-04-20 | 2009-05-06 | 高田株式会社 | Seat belt retractor and seat belt device |
| CN101254779A (en) * | 2007-03-01 | 2008-09-03 | 株式会社东海理化电机制作所 | Webbing retractor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353306A (en) * | 2018-12-06 | 2019-02-19 | 湖北科技学院 | A kind of automobile equipped with the safety belt with pooling feature |
| CN109353306B (en) * | 2018-12-06 | 2023-12-22 | 湖北科技学院 | Automobile equipped with safety belt with buffering function |
| CN113772132A (en) * | 2021-09-16 | 2021-12-10 | 北京卫星环境工程研究所 | Portable safety belt with adjustable length for extra-cabin maintenance |
| CN114042265A (en) * | 2021-11-18 | 2022-02-15 | 广东电网有限责任公司江门供电局 | Novel safety belt device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105711542B (en) | 2018-06-26 |
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