CN103832396B - A kind of retractor frame and secondary side cover, safety device - Google Patents

Abstract

A kind of retractor frame provided by the invention, comprises the biside plate be oppositely arranged and the backboard be fixedly installed at homonymy and biside plate; Biside plate respective spools position is respectively arranged with two through hole.At least one through hole is provided with ratchet section, and spool is provided with the ratchet-gear wheel coordinated with ratchet section, and the position relative with ratchet section is provided with Locking Device, and this Locking Device comprises locking lever and slide block; Locking lever is connected with respective side panels by the S. A. parallel with reel axis, can rotate under external force, and be provided with top recess along on the top of positive dirction around this S. A.; Slide block comprises the slide construction coordinated with respective slide supporting construction and the drive configuration driving slide block when contacting with ratchet-gear wheel, also comprises the compressing structure stoping its body to tilt.The present invention utilizes the architectural feature of locking lever to push the ratchet-gear wheel of counter-rotation to described ratchet section, and utilizes ratchet feature to carry out the locking of spool, and project organization is comparatively simple, improves reliability simultaneously.

Description

A kind of retractor frame and secondary side cover, safety device

Technical field

The present invention relates to belt with pre-load device taking-up device, be specifically related to Locking Device.The invention still further relates to a kind of retractor frame assembly and a kind of safety device.

Background technology

Safety strap collides as automobile and protects the basic protective device of driver and crew in process, and be the important safety component of automobile, its quality weighs the major criterion of automotive performance.

The safety strap be applied to the earliest on automotive seat is standard body-restraining seat belt, and user is limited on seat by catch gear and ribbon by the safety strap of this type.But a lot of defects that this simple design exists.

First, due to subjective factor and the objective factor such as certain thickness and ribbon elasticity of comfort level, after safety strap is fastened, ribbon relative usage person has in fact very large tensioning surplus, the user when automobile collides may be caused like this because inertia departs from ribbon restriction, produce very serious consequence.Secondly; suppose that this body-restraining seat belt can when colliding by user's restriction on the seat, but due to impact moment velocity variations very fast, in-service time is short; causing ribbon to act on user's power with it usually can be very large, and ankle injury or even rib fracture can occur time serious.

Along with the progress of technology, vehicle safety more and more comes into one's own, and prefastening and pretension limit type safety strap technology occur in succession, and are applied.

Belt with pre-load device is also referred to as preshrunk formula safety strap.The feature of this type safety strap is when automobile collides in a flash---when user not yet moves forward, first ribbon can be tightened up, user is limited on the seat tightly, then locking ribbon, user's forward lean can be prevented like this or limit because inertia departs from ribbon.

What play a major role in belt with pre-load device is taking-up device.The taking-up device of belt with pre-load device, except the folding and unfolding ribbon function of common taking-up device, also has when the speed of a motor vehicle occurs sharply to change, can strengthen the function of the constrained force to user at about 0.01 second.Therefore it also has control setup and pre-tightening apparatus.

Described pre-tightening apparatus is arranged in retractor frame, and described pre-tightening apparatus generally includes gas generator, pretension pipe and driver element.Belt-strap is wrapped on spool.Described control setup generally includes controller and induction installation.

When induction installation detects the accidents such as automobile collides, controller controls the blast of described gas generator, launches described driver element.Described driver element impacts described spool under the guiding of described pretension pipe makes it rotate, thus completes and tighten up action.Then described spool is locked relative to this retractor frame under the effect of ribbon pulling force with other mechanisms, cannot rotate.

But belt with pre-load device also exists defect equally.When automobile meets accident, the force of inertia that described pre-tightening apparatus acts on predetermincd tension on ribbon and user self forms the superposed force to user self, and instantaneous force may cause serious injury user.And then there is the safety strap with limiter function.

Pretension limit type safety strap limits the size of predetermincd tension usually by limiter element or forcelimiting mechanism.Prior art is typically employed in the torsion bar arranging in described spool and to a certain degree deformation can occur.

Concrete structure is, described pretension limit type safety strap comprises retractor frame, pre-tightening apparatus, spool, torsion bar, induction installation and controller.Described pre-tightening apparatus, induction installation are identical with described belt with pre-load device with controller, repeat no more.

Described retractor frame is U-shaped framework, on the relative biside plate of described U-shaped framework, is provided with the through hole of band internal tooth.Spool comprises the spool for being wound around ribbon and is arranged at the separate end cap at spool two ends.Described end cap is provided with the external tooth matched with internal tooth on framework; Rotatable the floating of described spool is arranged on described U-shaped framework, and two end cap is arranged in the through hole of described U-shaped framework respectively, in normal state, the external tooth on end cap does not engage with the internal tooth of described through hole, spool can rotate in described through hole, to be wound around ribbon or release ribbon.

Described torsion bar is shaft-like, is arranged among spool along described reel axis, and is connected by interior external tooth engagement system along axis centre position at described spool; In addition, described torsion bar two ends through described two end cap center, to be stretched out outside end cap and to be meshed with the internal tooth in two end cap by external tooth.

Above-mentioned pretension limit type safety strap working process is as follows: when colliding, and induction installation triggers the actuating mechanism action comprising gas generator, promotes to drive spool to tighten up ribbon.After about 0.01 second, gas generator quits work.Ribbon makes spool rotate under the effect of user's force of inertia, and under the mating reaction of other actuating mechanisms, external tooth on the end cap of spool is meshed with the internal tooth of U-shaped framework, spool is become lockup state from rotatable quick condition (also can be described as free state).The ribbon be wrapped on spool is no longer outwards discharged.Thus user is fixed on seat.In the process, the power moved forward that user produces due to inertia that what ribbon bore come from can be bigger and bigger, and this power is always rotated at the spool attempting to draw spool.But spool is by the torsion bar be engaged with, the end cap engaged with torsion bar and be fixed on U-shaped framework and cannot rotate.When the tractive force of ribbon can make enough greatly torsion bar produce distortion rotation, the rotation of certain angle will be there is in spool, thus make ribbon can be released a segment length, and then make user can produce forward certain displacement, alleviate ribbon and act on user's pulling force with it, reach the effect that restriction ribbon acts on user's power with it, obtain limiter effect.

Above-mentioned safety strap except the advantage with belt with pre-load device; also utilize the size of torque characteristic restriction power on user's health of torsion bar; and utilize the deformation of torsion bar can discharge a small amount of ribbon; further prolongation in-service time; further reduction ribbon to the application force of user, thus to reach the object protecting user to greatest extent.

As can be seen from above-mentioned principle of work and working process, when automobile meets accident, Locking Device needs spool described in locking, makes it again not rotate.Effectively could fix user like this, play the object of protection user.

Fix for the locking of spool in taking-up device at Emergency time, prior art adopts spindle nose braking system usually, and the generally independent setting of similar spindle nose braking system, structure is more complicated, and response time is long, and adds the quality of described taking-up device.

Summary of the invention

The invention provides a kind of retractor frame, to solve the problem of prior art complex structure and entirety heaviness.

The invention provides a kind of retractor frame, be applied to the taking-up device of belt with pre-load device, described taking-up device comprises the spool and pre-tightening apparatus that are wound around belt-strap, described pre-tightening apparatus comprises generating means, pretension pipe and driver element, described driver element is under the effect of generating means, act on described spool by described pretension pipe, drive this spool to rotate;

Described retractor frame comprises the biside plate being oppositely arranged also fixed distance apart and the backboard be fixedly installed at homonymy and biside plate; The corresponding described spool positions of biside plate is respectively arranged with two through hole, and biside plate is the first side plate and the second side plate, and accordingly, two through hole is the first through hole and the second through hole, and described first through hole and the second through hole are used for the structure of the relevant position of accommodating described spool; The region that described first side plate, the second side plate and backboard surround is spatial accommodation, and described spatial accommodation is used for accommodating described pretension pipe and described spool;

Described first through hole and/or the second through hole are provided with ratchet section corresponding to described belt-strap pull-out direction, and described spool is provided with ratchet-gear wheel corresponding on lead to the hole site, and described ratchet section comprises the ratchet coordinated with described ratchet-gear wheel;

Described ratchet-gear wheel hand of rotation when to rotate along tooth mode is called positive dirction, otherwise, be reversing sense;

On the edge of respective through hole, the position relative with described ratchet section is or/and the position close with described ratchet section relative position is provided with Locking Device, and this Locking Device comprises locking lever and slide block;

Described locking lever comprises its body, described its body is by being connected with respective side panels with the S. A. of described spool axis parallel, this its body has extension along described ratchet-gear wheel circumferencial direction, and it is along the top of positive dirction being provided with the top recess with ratchet engagement on described ratchet-gear wheel;

Described its body can rotate around described S. A. under the effect of external force, and described top recess moves, with the ratchet engagement on described ratchet-gear wheel near described ratchet-gear wheel direction with rotation;

Described top recess can make this top recess this ratchet-gear wheel of jack-up matching with described ratchet section when ratchet engagement corresponding to described ratchet-gear wheel apart from the distance of described S. A.;

Described slide block comprises slider body, and described slider body is arcuation, comprises the drive configuration of intrados side and the slide construction of extrados side;

Described drive configuration have setting radian the contour structure identical with ratchet-gear wheel circumferential profile, this drive configuration when contacting with described ratchet-gear wheel, can on described ratchet-gear wheel ratchet drive under drive this slide block to slide along corresponding slider support guide frame;

Described slide construction has the contour structure with respective slide support guide structure bearing fit, can slide under the effect of external force along slider support guide frame;

During described Locking Device off working state, do not contact with ratchet-gear wheel, described slide block and described locking lever close, the apex structure of described its body is in below described slider body, and this slider body has the compressing structure stoping described its body to tilt.

Optionally, described top recess this its body through on direction, parallel spool axis.

Optionally, described locking lever comprises torsion spring, and described its body can tilt around described S. A. under the effect of this torsion spring.

Optionally, described locking lever is arranged at position relative with described ratchet section on the edge of respective through hole.

Optionally, described slider body is camber platy structure.

Optionally, described drive configuration offers the auxiliary flute of at least one parallel described spool axis near the side of described spool.

Optionally, described auxiliary flute is at least three, and between be parallel to each other, spacing is equal.

Optionally, described drive configuration is provided with at least one auxiliary projection being parallel to described spool axis near the side of described spool.

Optionally, described auxiliary projection is at least three, and between be parallel to each other, spacing is equal.

Optionally, described compressing structure offers the engages indentation of this its body top corresponding construction accommodating corresponding to described its body apical position.

Optionally, described slide block has perpendicular to spool axis relative to the arranged outside of described spatial accommodation and the slide block vertically-guided handle extended to spool axis.

Optionally, be provided with bottom described slide block vertically-guided handle along being parallel to the slider guide projection that spool axis extends to the direction away from described spatial accommodation.

Optionally, one end that described its body is relative with described top recess relative to described S. A. is provided with rotary steering projection, this rotary steering projection is circular arc bulge-structure, described retractor frame relevant position is provided with rotary steering recess, and described rotary steering recess has identical circular arc recess protruding with described rotary steering.

Optionally, described rotary steering recess is arranged at respective through hole edge.

The present invention also provides a kind of secondary side cover for retractor frame, for being arranged at side plate lateral surface, comprises auxiliary guide frame, and this auxiliary guide frame comprises guiding arc plate, direction recess and directed side;

Described guiding arc plate is and the arc platy structure of slide block vertically-guided handle near the ends contact of spool, and this guiding arc plate has extension along the motion path of described vertically-guided handle;

Described direction recess is the groove structure of the accommodating slider guide projection corresponding to the setting of slider guide projection movement region;

The corresponding described slide block vertically-guided handle lateral surface of described directed side is arranged, and has extension in slide block vertically-guided motion of handle region.

In addition, the present invention also provides a kind of safety device, comprises the retractor frame of above-mentioned arbitrary characteristics and/or the secondary side cover of above-mentioned arbitrary characteristics.

The present invention utilizes the architectural feature of locking lever to push the ratchet-gear wheel of counter-rotation to described ratchet section, and utilizes ratchet feature to carry out the locking of spool, and such project organization is comparatively simple, improves reliability simultaneously.

Accompanying drawing explanation

Fig. 1 is the overall pattern of a kind of belt with pre-load device taking-up device provided by the invention;

Fig. 2 is the constructional drawing of spool in Fig. 1;

Fig. 3 is the exploded view of spool in Fig. 2;

Fig. 4 is the constructional drawing of retractor frame assembly in Fig. 1;

Fig. 5 is the constructional drawing of retractor frame in Fig. 1;

Fig. 6 is the constructional drawing of Fig. 1 cover plate;

Fig. 7 is the schematic diagram of Locking Device in Fig. 1;

Fig. 8 is the constructional drawing of Locking Device in Fig. 7;

Fig. 9 is the assembling relationship figure of Locking Device and secondary side cover in Fig. 7;

Figure 10 is the exploded view of pre-tightening apparatus in Fig. 1;

Figure 11 is the exploded view of generating means in Figure 10;

Figure 12 is the constructional drawing of pretension pipe in Figure 10;

Figure 13 is the constructional drawing of drive unit assembly in Figure 10;

Figure 14 is the cooperation schematic diagram of driver element and Fig. 3 pedal wheel in Figure 13;

Figure 15 is the partial enlarged drawing of unit jump ring and pretension pipe annexation in Figure 10;

Figure 16 is the constructional drawing of unit jump ring in Figure 10;

Figure 17 is the first structure principle chart of unit jump ring and driver element in Figure 10

Figure 18 is the second structure principle chart of unit jump ring and driver element in Figure 10;

Figure 19 is the embodiment of connection mode in pretension pipe and generating means second in Figure 10;

Figure 20 is the exploded view of clip in Figure 19;

Figure 21 is understructure figure view A in Fig. 1;

Figure 22 is understructure figure view B in Fig. 1;

Figure 23 be in Figure 21 base and Locking Device coordinate figure;

1-1: spool, 1-2: base, 1-3: pre-tightening apparatus, 1-4: secondary side cover, 1-5: retractor frame assembly,

2-1: ratchet-gear wheel, 2-2: reel body, 2-3: pedal is taken turns,

3-1: the first ratchet-gear wheel, the 3-2: the first torsion bar, the 3-3: the first pedal wheel, 3-4: support board, 3-5: torsion bar through hole, the 3-6: the second torsion bar, the 3-7: the second ratchet-gear wheel, the 3-8: the second pedal wheel,

4-1: cover plate, 4-2: retractor frame, 4-3: pretension pipe,

5-1: the first side plate, 5-2: backboard, 5-3: pretension pipe support protrusion, 5-4: cover plate connecting bore, 5-5: cover plate fixes ear, 5-6: pretension pipe supplemental support, the 5-7: the second side plate, 5-8: cover plate fixed lobe, the 5-9: the second through hole, 5-10: spool support structure, 5-11: assembling folding ear, 5-12, slide block first support guide structure, the 5-13: the first rotary steering recess, the 5-14: the first through hole, 5-15: ratchet section

6-1: the first plate, 6-2: ribbon guide pin bushing, 6-3: connection bump, 6-4: First Line, the 6-5: the second line, 6-6: reinforced rib, the 6-7: the three plate, the 6-8: the three line, 6-9: fixed orifice, the 6-10: the second plate, 6-11: limiting holes,

7-1: slide block, 7-2: locking lever,

8-1: slider body, 8-2: auxiliary flute, 8-3: its body, 8-4: rotary steering is protruding, 8-5: torsion spring, 8-6: S. A., 8-7: top recess, 8-8: compressing structure, 8-9: slider guide is protruding, 8-10: slide block vertically-guided handle,

9-1: guiding arc plate, 9-2: direction recess,

10-1: drive unit assembly, the 10-2: the first bolt, 10-3: keep plate, 10-4: generating means, 10-5: unit pin, 10-6: unit jump ring,

11-1: closing cap, 11-2, tank body body, 11-3: chamber, 11-4: gas generator, 11-5: lip projection, 11-6: air gate, the 11-7: the first tapped bore,

12-1: the first relief hole, 12-2: unit pin mounting hole, 12-3: pretension pipe guide frame, 12-4: generating means connecting bore, 12-5: unit jump ring mounting hole,

13-1: driver element, 13-2: belly groove,

16-1: jump ring head, 16-2: jump ring connecting portion, 16-3: jump ring auxiliary section,

19-1: clip,

20-1: clip body, the 20-2: the first contiguous block, the 20-3: the second bolt, the 20-4: the second contiguous block, the 20-5: the first mounting ring, the 20-6: the second mounting ring,

21-1: the spacing bayonet socket of spool, 21-2: spool support cambered surface, 21-3: slide block second support guide structure, the 21-4: the second rotary steering recess, 21-5: driver element curved guiding surface, 21-6: mounting limit, 21-7: air extractor vent, 21-8: driver element buffering step, 21-9: base body

22-1: generating means protective zone.

Detailed description of the invention

Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.

Fig. 1 is the application schematic diagram of the present embodiment---the overall pattern of belt with pre-load device taking-up device, and belt with pre-load device taking-up device described in this can be applicable to variously need occasion, herein for automobile introduction.

Described belt with pre-load device taking-up device (being called for short: taking-up device) comprises retractor frame assembly 1-5, spool 1-1, base 1-2, pre-tightening apparatus 1-3 and secondary side cover 1-4.

As shown in Figure 2, be the constructional drawing of described spool 1-1.Described spool 1-1 comprises reel body 2-2, pedal wheel 2-3 and ratchet-gear wheel 2-1.The axis of described reel body 2-2, pedal wheel 2-3 and ratchet-gear wheel 2-1 overlaps, and is described spool 1-1 axis.

Described reel body 2-2 is shaft-like structure, and for connecting and being wound around belt-strap, it can rotate the belt-strap release being wound around by belt-strap and maybe will being wound around thereon around its axis.

Described ratchet-gear wheel 2-1 or described pedal wheel 2-3 is arranged at described reel body 2-2 along at least one end in the two ends in direction, described spool 1-1 axis, and namely described ratchet-gear wheel 2-1 both can be symmetrical arranged, and can one-sidedly arrange again; Described pedal wheel 2-3 both can be symmetrical arranged, and also can one-sidedly arrange, and the selection of both symmetries or one-sided setting was without correlative connection.

Described pedal wheel 2-3 comprises at least one wheel plate.Described wheel plate is perpendicular to described spool 1-1 axis and the circular plate-like shape structure that overlaps with described spool 1-1 axis of its axis, comprises the driving recess extended to described spool 1-1 axis of uniform array distribution.Described driving recess can, under the driving of described pre-tightening apparatus 1-3, make described spool 1-1 rotate around this spool 1-1 axis.

In the present embodiment, described pedal wheel 2-3 comprises two wheel plates, keeps certain interval between two wheel plates.Certainly, can according to actual conditions wheel plate quantity.If the single wheel plate of described pedal wheel 2-3, described pedal wheel 2-3 at least will keep certain interval between side and adjacent parts.

Described pedal wheel 2-3 position is provided with ratchet-gear wheel 2-1, and described ratchet-gear wheel 2-1 is provided with the ratchet of equidirectional.

Herein, described ratchet-gear wheel 2-1 with the hand of rotation rotated along the direction of teeth for positive dirction, otherwise be reversing sense.So-called to rotate along the direction of teeth namely, described ratchet-gear wheel 2-1 is in the rotary course of described spool 1-1 axis, and the tooth crest of the single ratchet of this ratchet-gear wheel 2-1 is in the motion front in tooth root portion all the time.

Fig. 3 is the exploded view of described spool 1-1.As can be seen from Figure 3, in the present embodiment, the pedal wheel of described spool 1-1 and ratchet-gear wheel are all symmetricly set in the two ends of described reel body 2-2, are respectively the first ratchet-gear wheel 3-1, the second ratchet-gear wheel 3-7, the first pedal wheel 3-3 and the second pedal wheel 3-8.

Described spool 1-1 also comprises torsion bar, support board 3-4 and torsion bar through hole 3-5.

Described reel body 2-2 arranges support board 3-4 along the rear and front end of its axis, and described support board 3-4 is the circular plate-like shape structure that axis overlaps with described spool 1-1 axis.

Described reel body 2-2 is provided with torsion bar through hole 3-5 along its axis, and described torsion bar through hole 3-5 is cylindrical hole.

Described torsion bar is shaft-like, and is arranged among described torsion bar through hole 3-5 along described spool 1-1 axis, and its both ends at least extend to the ratchet-gear wheel 2-1 of described reel body 2-2 both sides.

Described torsion bar is fixedly connected with described reel body 2-2 after being placed in described torsion bar through hole 3-5.

In the present embodiment, described torsion bar medium position is vertically provided with stage casing external tooth, is provided with internal tooth with matching in described torsion bar through hole 3-5, and both engagements, play fixation.

Described torsion bar adopts segmental structure, and namely comprise the first torsion bar 3-2 and the second torsion bar 3-6, the respective end on two sections of torsion bars is provided with the outer toothing matched with the internal tooth in described torsion bar through hole 3-5.

Described torsion bar has special mechanical specialities, can allow a small amount of torsional deflection and not be damaged.In actual conditions, by selecting the modes such as length ratio between different materials and segmentation torsion bar to adapt to different torsional requirements.

There is multiple connection mode between described reel body 2-2, support board 3-4, pedal wheel 2-3 and ratchet-gear wheel 2-1, can be Integral design or wherein adjacent two or more part Integral design, determine according to actual conditions and installation method.

In the present embodiment, described ratchet-gear wheel 2-1 and described reel body 2-2 is separable, can adapt to different retractor frame 4-2 like this.Described torsion bar is fixedly connected with described ratchet-gear wheel 2-1.The mode that gear coordinates is taked in the present embodiment.

As shown in Figure 4, be the constructional drawing of shown retractor frame assembly 1-5, comprise retractor frame 4-2, cover plate 4-1 and pretension pipe 4-3.

Fig. 5 is the constructional drawing of described retractor frame 4-2.

Described retractor frame 4-2 comprises the first side plate 5-1 and the second side plate 5-7 that are oppositely arranged also fixed distance apart, and at the backboard 5-2 that homonymy and biside plate are fixedly installed.Described first side plate 5-1 and described second side plate 5-7 is except the difference illustrated, entirety is symmetrical structure.

For convenience of describing, position relationship involved is herein all by location expression in figure, and biside plate (5-1 and 5-7) and described backboard 5-2 all vertically place.

Described spool 1-1 is arranged in the mode of axis horizontal, and perpendicular to biside plate.At described first side plate 5-1, the first through hole 5-14 and the second through hole 5-9 of accommodating described spool 1-1 corresponding construction is set respectively with the described second corresponding described spool 1-1 position of side plate 5-7.

In the present embodiment, described spool is provided with ratchet-gear wheel corresponding to lead to the hole site.

Described belt-strap is pulled out by the top of described retractor frame 4-2.Described first through hole 5-14 and/or the corresponding described belt-strap pull-out direction of described second through hole 5-9 are provided with ratchet section 5-15, described ratchet section 5-15 are provided with the ratchet matched with described ratchet-gear wheel 2-1.Under normal circumstances, described ratchet-gear wheel 2-1 is separated with described ratchet section 5-15, and described spool 1-1 is free to rotate.

The through hole edge being provided with ratchet section 5-15 can be divided into ratchet section 5-15 and non-ratchet section.

Be called for spatial accommodation by the region that described first side plate 5-1, described second side plate 5-7 and described backboard 5-2 surround herein, described spatial accommodation is used for accommodating described pretension pipe 4-3 and described spool 1-1, i.e. installing space.

Described cover plate 4-1 is arranged at the top of described retractor frame 4-2, is namely drawn out the side in direction corresponding to described belt-strap.This cover plate 4-1 is platy structure.Described cover plate 4-1 comprises ribbon guide pin bushing 6-2, and described ribbon guide pin bushing 6-2 is the outlet that described belt-strap is drawn out described taking-up device.

Fig. 6 is the constructional drawing of cover plate 4-1.

In the present embodiment, described ribbon guide pin bushing 6-2 is opened in the through region of round rectangle near described backboard 5-2 position on described cover plate 4-1.For reducing the friction of described belt-strap and ensureing the intensity of described cover plate 4-1, around described through region, be provided with boss, and at periphery rounding.

On described retractor frame assembly 1-5, other architectural features are pointed out in conjunction with other parts hereinafter.

The bottom of described retractor frame 4-2 is connected with base 1-2.

Figure 21 and Figure 22 is the constructional drawing of base.

Described base 1-2 comprises base body 21-9, the spacing bayonet socket 21-1 of spool, spool support cambered surface 21-2 and mounting limit 21-6.

After completing assembling, described spool spacing bayonet socket 21-1 is arranged at the position at interval between wheel plate in corresponding described pedal wheel 2-3, if single wheel plate, this spool spacing bayonet socket 21-1 is arranged at the position at interval between described pedal wheel 2-3 and side part.

The spacing bayonet socket 21-1 of described spool is at least one, can arrange according to actual conditions.The spacing bayonet socket of this spool plays position-limiting action, jumps about preventing described spool.

Described mounting limit 21-6 contacts with described retractor frame 4-2 outer after assembling completes, and plays position-limiting action, the assembling both convenient.

In pretension process (the belt with pre-load device specific works principle with reference to hereafter), described spool support cambered surface 21-2 contacts with the spool 1-1 of relevant position, plays bearing effect, the motion of this spool of stable support 1-1.

Other architectural features of described base 1-2 are pointed out in conjunction with other parts hereinafter.

Figure 10 is the exploded view of pre-tightening apparatus 1-3.As can be seen from Figure 10, described pre-tightening apparatus 1-3 comprises generating means 10-4, drive unit assembly 10-1 and pretension pipe 4-3.Described drive unit assembly 10-1 comprises several driver elements 13-1, is arranged in described pretension pipe 4-3.The energy transferring that in this drive unit assembly, described generating means 10-4 produces by the driver element 13-1 of 10-1 in described pretension pipe 4-3, to described spool 1-1, makes its coiling axle 1-1 axis rotate.

Figure 11 is the exploded view of generating means 10-4, and described generating means 10-4 comprises gas generator 11-4 and tank body.Described gas generator 11-4 is connected with described pretension pipe 4-3 by tank body.

Described tank body comprises tank body body 11-2, chamber 11-3, pressure relief plate (not shown), lip projection 11-5, closing cap 11-1 and air gate 11-5.Described chamber 11-3 is arranged at the circular cylindrical cavity on described tank body body 11-2, comprises the first chamber and the second chamber that are separated by described pressure relief plate.The face of cylinder of described first chamber coordinates with described gas generator 11-4, and the action direction of described gas generator 11-4 is parallel to the axis of described chamber 11-3.Described second chamber is closed by described closing cap 11-1, and inside is placed with metal wool, the gentle flow-disturbing effect of landing.

Described pressure relief plate is arranged in described chamber 11-3, this pressure relief plate is provided with the second relief hole.

In the present embodiment, the second relief hole is be opened in the through-hole structure on described pressure relief plate, and arranges and maximum pressure in restriction the first chamber by adjustment through-hole diameter.

Described tank body body 11-2 offers the air gate 11-6 through with described first chamber.Described tank body body 11-2 arranges lip projection 11-5 around described air gate 11-6, and this lip projection 11-5 enters pretension pipe 4-3 with matching, seals.

After described lip projection 11-5 enters described pretension pipe 4-3, anchor fitting is had tank body and described pretension pipe 4-3 to be fixed.

As can be seen from Figure 10, in the present embodiment, described tank body and described pretension pipe 4-3 complete fixing between this tank body and this pretension pipe 4-3 by keep plate 10-3 and the first bolt 10-2, and corresponding described tank body body 11-2 is provided with the first tapped bore 11-7 coordinated with the first bolt 10-2.

As shown in figure 19, in the present invention, described tank body and described pretension pipe 4-3 also can adopt clip 19-1 to be fixed connection.Figure 20 is the exploded view of clip 19-1.Described clip 19-1 comprises clip body 20-1, the first mounting ring 20-5, the second mounting ring 20-6, the first contiguous block 20-2, the second contiguous block 20-4 and the second bolt 20-3.Described clip body 20-1 is loop configuration, and entirety coordinates with tank body circumferential profile.This clip body 20-1 is connected with the first mounting ring 20-5 be oppositely arranged and the second mounting ring 20-6.Described first mounting ring 20-5 and the second mounting ring 20-6 is respectively used to accommodating first contiguous block 20-2 and the second contiguous block 20-4.Described first contiguous block 20-2 and described second contiguous block 20-4 is the trapezoid block with the second tapped bore matched with the second bolt 20-3, two trapezoid blocks are arranged at described first mounting ring 20-5 and are connected by the second bolt 20-3 with after described second mounting ring 20-6, tank body and pretension pipe 4-3 can be tightened up in described second bolt 20-3 rundown process.

For ensureing the stability of pre-tightening apparatus 1-3, described pretension pipe 4-3 is arranged near described retractor frame 4-2, and is provided with special anchor fitting.Described generating means is arranged in the below of described pre-tightening apparatus 1-3 and is positioned at described spatial accommodation relative to the side of described side plate away from backboard 5-2.

In the present embodiment, described pretension pipe 4-3 bilateral symmetry is arranged, and certainly, described pretension pipe 4-3 also can one-sidedly be arranged.

Described pretension pipe 4-3 comprises common pipe, the first effect pipe and the second effect pipe.Described first effect pipe is identical with the second effect tubular construction, and include an outlet, the functional component on spool 1-1 is pointed in each outlet, i.e. pedal wheel 2-3; This first effect pipe is connected with the two ends of described common pipe with relative mode respectively with the second effect pipe.

Concrete structure is as follows:

Described pretension pipe 4-3 is by generating means 10-4, extend along the direction perpendicular to side plate to biside plate, after arriving biside plate position, bending then along direction extension straight up, after arriving described cover plate 4-1 position, the bending extension to described backboard 5-2 direction, after this backboard 5-2, downwards bending, behind described pedal wheel 2-3 position, bend and point to described pedal wheel 2-3.

That is, described pretension pipe 4-3 is with the inverted U style setting near respective side panels, and wherein, inverted U pretension pipe 4-3 pipeline section has part to pass described cover plate 4-1, is called outstanding pipeline section by passing the part pretension pipe 4-3 of this cover plate 4-1 away from described spatial accommodation.

The pipeline section extended along side plate is the first effect pipe and the second effect pipe, is common pipe along the pipeline section extended perpendicular to side plate direction.

As can be seen from Figure 10, described pretension pipe 4-3 is parallel with the axis direction of described chamber 11-3 with the bearing of trend at described generating means 10-4 mated position place.

Described pretension pipe 4-3 offers the generating means connecting bore 12-4 matched with described lip projection 11-5.

Pretension pipe has two outlets, and for ensureing stress equalization, this generating means connecting bore 12-4 is arranged at the position corresponding to described first effect pipe and the second effect pipe symmetrical plane in described common pipe.

Described pretension pipe 4-3 also offers the first relief hole 12-1, unit pin mounting hole 12-2 and unit jump ring mounting hole 12-5.

Described first relief hole 12-1 is the through hole of the tube wall that described pretension pipe 4-3 tube wall is offered.Residual gas pressure in pretension pipe 4-3 after pretension process completes, can be discharged rapidly, the fluctuation of belt-strap in mild limiter process by this first relief hole 12-1, and this first relief hole 12-1 structure is simple, easily realizes.

As shown in figure 12, described first relief hole 12-1 is arranged at the knee of described pretension pipe 4-3 exit end.The normally described driver element in this position impacts larger region to described pretension pipe 4-3.

Described unit pin mounting hole 12-2, for arranging the unit pin 10-5 of fixed drive unit block 10-1 at ordinary times, is destroyed under the effect of the driver element 13-1 that this unit pin 10-5 can drive at gas generator 11-4.

Described unit jump ring mounting hole 12-5 is used for engagement unit jump ring 10-6 and fixes described pretension pipe 4-3, and this unit jump ring 10-6 concrete structure is pointed out hereinafter.

Because described pretension pipe 4-3 exists certain bending tube section.Described driver element 13-1 can produce certain application force to pretension pipe 4-3 tube wall in motion process in pretension pipe 4-3.The exit end of described pretension pipe 4-3 has the trend departing from predefined paths under described driver element effect.

The side that the exit end of described pretension pipe can stop described driver element to depart from predefined paths is called that pretension pipe departs from side.

Can be there is amesiality centrifugal motion after going out described pretension pipe 4-3 in described driver element 13-1, described pretension pipe departs from side and centrifugal motion direction is positioned at the same side.

For making driver element 13-1 maximizing efficiency, needing to be limited the sense of motion of described driver element 13-1, guiding its precise and high efficiency to beat to described pedal wheel 2-3.Therefore, described pretension pipe 4-3 is provided with pretension pipe guide frame 12-3.

Described pretension pipe guide frame 12-3 is connected with the inwall of pretension pipe 4-3 described in junction is as far as possible without hindrance.In the present embodiment, the described pretension pipe guide frame 12-3 working face inwall corresponding to described pretension pipe 4-3 is tangent.

In the present embodiment, described pretension pipe guide frame 12-3 is rectangular plate-like structure, and have the limit with described spool 1-1 axis parallel, the outlet section of this pretension pipe guide frame 12-3 and described pretension pipe 4-3 is by being welded to connect.

Certainly, described pretension pipe guide frame 12-3 also can be formed by the cutting of described pretension pipe 4-3 exit end, the structure be integrated with described pretension pipe 4-3.

The bootable described driver element 13-1 of this pretension pipe guide frame 12-3 accurately beats to described pedal wheel 2-3.

As can be seen from Figure 5, corresponding to described pretension pipe guide frame 10-3, side plate relevant position is provided with pretension pipe supplemental support 5-6.

Described pretension pipe supplemental support 5-6 is positioned at the position corresponding to described pretension pipe guide frame 12-3 on described retractor frame 4-2, and is connected with the outer wall of described pretension pipe 4-3 relevant position, is namely connected with pretension pipe guide frame 12-3.

In the present embodiment, described pretension pipe supplemental support 5-6 is the rectangular plate-like structure identical with described pretension pipe guide frame 12-3.

Described pretension pipe supplemental support 5-6 is for obtain turnup structure by described retractor frame 4-2 flange.Certainly, also the mode of available solder plate object replaces.

This pretension pipe supplemental support 5-6 is fixedly linked by the mode of semi-stamping and described pretension pipe guide frame 12-3.Certainly welding also can be adopted to wait other to be fixedly connected with mode makes both be fixedly linked.

As shown in figure 13, be the constructional drawing of drive unit assembly 10-1.Multiple driver element 13-1 head and the tail complement each other to form complete soft drive chain.Figure 14 to be driver element 13-1 with pedal take turns 2-3 coordinates schematic diagram.Described driver element 13-1 bilateral symmetry is provided with the belly groove 13-2 taking turns the gear teeth on 2-3 with pedal and coordinate.Described driver element 13-1 beats in the gap after pedal wheel 2-3 between this pedal wheel 2-3 two wheel plate, and described belly groove 13-2 takes turns 2-3 with pedal and engages, thus improves drive efficiency.

The structure of described driver element 13-1 can be determined according to the architectural feature of described pedal wheel 2-3.

For preventing described driver element 13-1 from rotating with described pedal wheel 2-3, affecting follow-up driver element 13-1 and described pedal and taking turns 2-3 and engage and move with other of described spool 1-1.This driver element 13-1 peels off from described pedal wheel 2-3 by described spool spacing bayonet socket 21-1.

For effectively supporting described spool 1-1 and restriction described pretension pipe 4-3, described retractor frame assembly 1-5 comprise and utilize self geometry feature to make a series of relevant design.Hereafter will be described in detail.

Because the first side plate 5-1 and the second side plate 5-7 is platy structure, thickness is less, and therefore, in pretension process, the area of the edge of the first through hole 5-14 and the second through hole 5-9 and the form touch of spool 1-1 relevant position is less, the less stable of contact.

Therefore, described first through hole 5-14 is or/and described second through hole 5-9 edge non-ratchet fragment position is provided with the spool support structure 5-10 that can support described spool 1-1 corresponding construction and ratchet-gear wheel 2-1.This spool support structure 5-10 has the curved surfaces matched with described ratchet-gear wheel 2-1 periphery.

In the present embodiment, described spool support structure 5-10 is arranged at the position relative with described ratchet section 5-15, respective through hole edge, and only arranges on a side plate.Arrange in the present embodiment on the edge of the second through hole 5-9.

Described spool support structure 5-10 is that the flange that respective side panels extends to described spatial accommodation forms, and this spool support structure 5-10 is the structure with its place side plate one, all has extension along described spool 1-1 axis direction and peripheral direction.Certainly, described spool support structure 5-10 and respective side panels can be Split type structure, and both are fixedly connected with.

For ensureing the stability that taking-up device is being made, described retractor frame assembly 1-5 there is a series of particular design.

Corresponding and the described pretension pipe 4-3 position of described backboard 5-2 is provided with pretension pipe support protrusion 5-3.Described pretension pipe support protrusion 5-3 and described backboard 5-2 is structure as a whole, and splits lateral buckling in backward described spatial accommodation form for part in described backboard 5-2, and this spline structure is simple, and it saves material.Certainly also can Split type structure, adopt the modes such as welding to connect.

When described pretension pipe 4-3 is in the installation site in described spatial accommodation, this pretension pipe support protrusion 5-3 can lean on described pretension pipe 4-3.Because described pretension pipe 4-3 is tubular structure, for ensureing its stability, described pretension pipe support protrusion 5-5 has certain extension on the axis direction along described pretension pipe 4-3, and aligns with this direction.In addition, described pretension pipe support protrusion 5-3 has the arc structure matched with this pretension pipe 4-3 near the side of described pretension pipe 4-3, i.e. bearing surface.

The particular location that described pretension pipe support protrusion 5-4 is arranged and quantity freely can be determined according to actual conditions.Due to the fugitiveness that the reason near the position of exit end because of described driver element 13-1 centnifugal force on described pretension pipe 4-3 causes this position high compared with other positions, and consider the cooperation of other structures, only select to arrange described pretension pipe support protrusion 5-3 corresponding to the position of described pretension pipe 4-3 exit end on described backboard 5-2.

As can be seen from Figure 10 and Figure 15, this pretension pipe support protrusion 5-3 is provided with unit jump ring 10-6.

As Figure 16, described unit jump ring 10-6 comprises jump ring head 16-1, jump ring connecting portion 16-2 and jump ring auxiliary section 16-3.This unit jump ring 10-6 is symmetrical structure.Center of symmetry is described jump ring head 16-1.This jump ring head 16-1 is bending structure, has the connecting panel vertical with described backboard 5-2 and the action plate vertical with this connecting panel.Described action plate enters pretension pipe 4-3 by described unit jump ring mounting hole 12-2, and with the coordinating of corresponding described driver element 13-1, fixing described driver element 13-1, ensures that described driver element 13-1 is in the position of off working state at ordinary times and stability.

Figure 17 and Figure 18 is two kinds of structure principle charts of unit jump ring 10-6 and driver element 13-1, the end of action plate described in Figure 17 enters described belly groove 13-2, the end of action plate described in Figure 18 is positioned at the front end of described driver element, limit the motion of this driver element 13-1, thus the motion of the drive unit assembly 10-1 of restriction headed by this driver element 13-1.Two kinds of active positions have heightened the functioning efficiency of described unit jump ring 10-6 simultaneously.

Described action plate end has the inclined-plane along driver element 13-1 sense of motion, when described driver element 13-1 moves, this inclined-plane can promote described connecting panel under the effect of driver element 13-1, makes described action plate depart from the moving region of described driver element 13-1, does not hinder pretension process.

When described driver element 13-1 impulsive force weakens, this action plate reenters described pretension pipe under the elastic force of described connecting panel, fixing residue driver element 13-1, avoids remaining the impact of driver element 13-1 on the action of taking-up device residue.

As shown in Figure 6, described cover plate 4-1 is tabular mechanism, covers on described retractor frame 4-2.

Described cover plate 4-1 comprises limiting holes 6-11, connection bump 6-3 and fixed orifice 6-9.

Described limiting holes 6-11 is arranged corresponding to described pretension pipe 4-3 position.For reaching restriction and fixing object, described pretension pipe 4-3 and described cover plate 4-1 adopts following structure:

Described cover plate 4-1 offers the limiting holes 6-3 of outstanding pipeline section described in the described pretension pipe of restriction.Described limiting holes 6-3 just can the described outstanding pipeline section of accommodating described pretension pipe 4-3.

The length requirement of this limiting holes 6-11 will can limit fixing described outstanding pipeline section just.

Described pretension pipe 4-3 is cross section is circular tubular structure, and known described outstanding pipeline section is rectangle in described cover plate 4-1 respective shapes, and namely described limiting holes 6-11 is rectangular configuration.The dimensional standard of this rectangular configuration should equal or be slightly less than the size of described outstanding pipeline section corresponding to this limiting holes 6-11.

The size of described limiting holes 6-11 can allow certain error, but should can hold described pretension pipe 4-3 and can limit for the purpose of the motion of described pretension pipe 4-3 in the plane of described cover plate 4-1.

Described cover plate 4-1, at the edge near described backboard 5-2, is provided with connection bump 6-3, when described connection bump 6-3 is in installation site, perpendicular to described backboard 5-2.Accordingly, on described backboard 5-2, relevant position offers cover plate connecting bore 5-4 with matching.For ensureing its stability, the connecting bore of cover plate described in the present embodiment 5-4 is rectangular opening, and longer sides is perpendicular to side plate.

Described cover plate 4-1, being greater than the distance between biside plate perpendicular to the length on side plate direction, when namely described cover plate 4-1 is in installation site, has the part exceeding biside plate.Described cover plate 4-1 offers fixed orifice 6-9 away from the region of described backboard 5-2 and corresponding to the position of biside plate, and described fixed orifice 6-9 is elongated shape square hole, and the bearing of trend on its long limit is parallel to respective side panels.Corresponding side plate is provided with cover plate fixed lobe 5-8.

Described cover plate fixed lobe 5-8 is coplanar with its place side plate and is connected to the platy structure of this side board edge, comprises the second connecting portion and the second lug boss.Described second connecting portion connects its place side plate and described second lug boss.The length of described second lug boss in parallel respective side panels edge direction is greater than described second connecting portion length in the same direction, but is less than the length on the described long limit of fixed orifice 6-9.

When described cover plate 4-1 is in installation site, described fixed orifice 6-9 touches near the side edge of the second connecting portion described in the edge of described backboard 5-2 and described cover plate fixed lobe 5-8 near described backboard 5-2.

The guiding of described fixed orifice 6-9 should allow the second lug boss entirety of described cover plate fixed lobe 5-8 through this fixed orifice 6-9, and after installation, described cover plate fixed lobe 5-8, by rotating, can fix described cover plate 4-1.

For ensureing effectively to limit described cover plate 4-1, ear 5-5 fixed by the cover plate that described first side plate 5-1 and/or the second side plate 5-7 is provided with the described cover plate 4-1 of card pressure.Described cover plate is fixed ear 5-5 and is arranged near the position of described backboard 5-2 in respective side panels, is the platy structure coplanar with its place side plate, comprises the first connecting portion and the first lug boss.Described first lug boss is having extension perpendicular on the direction of described backboard 5-2 away from this backboard 5-2, and described first connecting portion connects its place side plate and described first lug boss near one end of described backboard 5-2.Described first lug boss and its space formed between the side plates are just and can hold the part of described cover plate 4-1 in relevant position.

Accordingly, described cover plate 4-1 is provided with and dodges described cover plate and fix described in ear 5-5 and dodge breach.

For coordinating said structure to fix, described cover plate 4-1 adopts bending platy structure.This cover plate 4-1 comprises the first plate 6-1, the second plate 6-10 and the 3rd plate 6-7 from back to front successively, and described first plate 6-1 contacts with described backboard 5-2, and perpendicular to described backboard 5-2.

Described first plate 6-1 and described second plate 6-10 and the intersection between described second plate 6-10 and described 3rd plate 6-7 are respectively First Line 6-4 and the second line 6-5, the line that described 3rd plate 6-9 is relative with described second line 6-2 is called the 3rd line 6-8, described First Line 6-4 and described second line 6-5 is parallel to each other, and is all parallel to described backboard 5-2.Described second line 6-5 is above described First Line 6-4.Described 3rd line 6-9 is in the below of described second line 6-5.

Described fixed orifice 6-9 is arranged on described 3rd plate 6-7.

Accordingly, described retractor frame 4-2 need have the structure matched with above-mentioned cover plate 4-1 shape facility.

Design like this, can only utilize its geometric configuration, can complete the fixing of described cover plate 4-1 and restriction without the need to union pieces such as screws.

On described cover plate 4-1, non-bore region is connected with reinforced rib 6-10 has increased its intensity.

Described retractor frame 4-2 is also provided with at least one assembling folding ear 5-11, this assembling folding ear 5-11 is connected and coplanar platy structure with its place side plate, described assembling folding ear 5-11 bends after assembling rear through corresponding communicating structure to other corresponding constructions, thus reaches fixation.This assembling folding ear 5-11 structure is simple, and realizes easily.

When automobile meets accident, need Locking Device and push described spool 1-1 to described ratchet section 5-15, then locked, therefore need special Locking Device.

Described Locking Device is arranged at the edge of the non-ratchet section of described first through hole 5-14 and/or described second through hole 5-9, and the position relative with described ratchet section 5-15 is or/and the position close with described ratchet section 5-15 relative position.

As shown in Figure 7, described Locking Device is arranged at position relative with described ratchet section 5-15 in described first through hole 5-14 edge.Described Locking Device comprises locking lever 7-2 and slide block 7-1.

Described locking lever comprises its body 8-3, and described its body 8-3 by being connected with respective side panels with the S. A. 8-6 of described spool 1-1 axis being parallel, and can rotate around this S. A. 8-6; Described its body 8-3 has extension along described ratchet-gear wheel 2-1 circumferencial direction, and it is along the top of positive dirction being provided with the top recess 8-7 coordinated with ratchet on described ratchet-gear wheel 2-1;

Described top recess 8-7 can make this top recess 8-7 jack-up this ratchet-gear wheel 8-1 matching with described ratchet section 5-15 when coordinating to the corresponding ratchet of described ratchet-gear wheel 2-1 apart from the distance of described S. A. 8-6;

Described its body 8-3 its top under the effect of external force tilts.

As can be seen from Figure 8, described locking lever 7-2 also comprises torsion spring 8-5.Described its body 8-5 can rotate around this S. A. 8-7 under the effect of torsion spring.

Certainly, described its body 8-3 also can rotate under the effect of other external force except torsion spring 8-5, such as rotating driving device.

Described its body 8-3 is the platy structure being parallel to described ratchet-gear wheel 2-1 plane of rotation, has extension along described ratchet-gear wheel 2-1 circumferential profile direction.

Under described torsion spring 8-5 effect, described its body 8-3 tilts.Corresponding described ratchet-gear wheel 2-1 circumferential profile is through in described top recess 8-8.

One end that described its body 8-3 is relative with top recess 8-7 relative to described S. A. 8-6 is provided with the protruding 8-4 of rotary steering.The protruding 8-4 of described rotary steering is circular arc bulge-structure, and described retractor frame 4-2 relevant position is provided with rotary steering recess, and described rotary steering recess has identical circular arc recess protruding with described rotary steering.The protruding 8-4 of this rotary steering matches with corresponding rotary steering recess, supports and limit the rotary motion of described its body 8-3.

Described rotary steering recess 8-4 comprises the first rotary steering recess 5-13 and the second rotary steering recess 21-4.Described first rotary steering recess 5-13 is arranged at the position of respective through hole edge corresponding to the protruding 8-4 of described rotary steering.Described second rotary steering recess 21-4 is arranged at the position of described base 1-2 corresponding to the protruding 8-4 of described rotary steering.The rotary motion of described first rotary steering recess 5-13 and described second rotary steering recess 21-4 common support and the described its body 8-3 of restriction.

Described slide block 7-1 comprises slider body 8-1.

Described slider body 8-1 is camber platy structure, comprises the drive configuration of intrados side and the slide construction of extrados side;

Described drive configuration has the contour structure identical with ratchet-gear wheel circumferential profile of setting radian, this drive configuration when contacting with described ratchet-gear wheel 2-1, can on described ratchet-gear wheel 2-1 ratchet drive under drive this slide block to slide along corresponding slider support guide frame;

Described slide construction has the contour structure with respective slide support guide structure bearing fit, can slide under the effect of external force along slider support guide frame;

During described Locking Device off working state, do not contact with ratchet-gear wheel, described slide block 7-1 and described locking lever 7-2 is close, and the apex structure of described its body is in below described slider body 8-1, and this slider body 8-1 has the compressing structure 8-8 stoping described its body 8-3 to tilt.

Described slider body 8-1 all has extension along described ratchet-gear wheel 2-1 periphery with being parallel on described spool 1-1 axis direction, and the extension in described ratchet-gear wheel 2-1 peripheral direction is greater than the extension be parallel on described spool 1-1 axis direction.

Described slider body 8-1 is the globoidal structure identical with ratchet section non-described in relevant position near respective through hole position.

This slider support guide frame limits and supports described slide block 7-1 and moves, and comprises the slide block first support guide structure 5-12 being arranged at retractor frame 4-2 relevant position and the slide block second support guide structure 21-3 being arranged at described base 1-2 relevant position.

Described drive configuration drives described slide block 7-1 to slide along corresponding slider support guide frame when contacting with described ratchet-gear wheel 2-1;

Described drive configuration is positioned at the side of described slider body 8-1 near described spool 1-1.

Described drive configuration offers at least three auxiliary flute 8-2.Be parallel to each other between described auxiliary flute 8-2, and spacing is equal.Certainly also can be auxiliary projection, more than three are parallel to each other and spacing is equal, and principle is identical with auxiliary flute 8-2, increases the friction force of ratchet and drive configuration when contacting with ratchet-gear wheel 2-1.

Described slider body 8-1 also comprises compressing structure 8-8, described compressing structure 8-8 described slide block 7-1 near described locking lever 7-2 time this locking lever 7-2 can be stoped to tilt.This compressing structure offers the engages indentation of accommodating this its body 8-3 top corresponding construction corresponding to described its body 8-3 apical position.

Described slide block 7-1 also comprises guide frame.Described guide frame comprises slide block vertically-guided handle 8-10 and the protruding 8-9 of slider guide.It is parallel with respective side panels and away from the side of described spatial accommodation that described slide block vertically-guided handle 8-10 is arranged at described slider body 8-1.Described slide block vertically-guided handle 8-10 is perpendicular to spool 1-1 axis and extend to spool 1-1 axis.

Bottom described slide block vertically-guided handle, 8-10 is provided with the protruding 8-9 of slider guide, and the protruding 8-9 of described slider guide extends to the direction away from spatial accommodation along parallel with spool axis.

Described retractor frame 4-2 arranged outside has secondary side cover 1-4, corresponding secondary side cover 1-4 is provided with guiding arc plate 9-1 and the direction recess 9-2 of the described slide block 7-2 motion of restriction.Described slide block vertically-guided handle 8-10 coordinates with described guiding arc plate 9-1 near the end of spool 1-1 axis, and the protruding 8-9 of described slider guide coordinates with described direction recess 9-2.Described guiding arc plate 9-1 and described direction recess 9-2 limits the path of motion of described slide block 7-1.

The side of the close corresponding secondary side cover 1-4 of described slide block vertically-guided handle 8-10 contacts with the side on this secondary side cover 1-4, ensures the stability of described slide block 7-1 in motion process.

Described secondary side cover only can be arranged guiding arc plate and directed side, accordingly, described slide block only arranges slide block vertically-guided handle.

Described base 1-2 is provided with the second rotary steering recess 21-4 for described Locking Device in relevant position.Described second rotary steering recess 21-4 coordinates with the protruding 8-4 of described rotary steering, limits the rotary motion of described locking lever 7-2.

Described base 1-2 also comprises air extractor vent 21-7, driver element curved guiding surface 21-5, driver element buffering step 21-8 and generating means protective zone 22-1.

Described air extractor vent 21-7 is opened in the through-hole structure on described base body 21-9, can discharge internal high temperature high pressure gas in time, prevent the destruction to other parts and damage.

The bootable described driver element 13-1 of described driver element curved guiding surface 21-5 accurately enters base 1-2 relevant position.

Described driver element buffering step 21-8 can consume the dump energy of described driver element 13-1.

Described generating means protective zone 22-1 is the void space that described base 1-2 is arranged corresponding to described generating means 10-4 position, fixes and protects described generating means 10-4.

Belt with pre-load device specific works principle:

Under normal circumstances, described spool 1-1 does not all contact with Locking Device with spool support structure 5-10, spool support cambered surface 21-2.This spool 1-1 relies on corresponding bearing arrangement to support, and freely can rotate under the traction of belt-strap.Described slide block 7-1 and described locking lever 7-2 is close, and this slide block 7-1 stops this locking lever 7-2 to tilt.

When automobile meets accident, described gas generator 11-4 almost instantaneous blast, described driver element 13-1 washes the restriction of described unit pin 10-5 and described unit jump ring 10-6 open, moves in described pretension pipe 4-3, and beats to described pedal wheel 2-3.Described spool 1-1 is close to described Locking Device, spool support structure 5-10 and spool support cambered surface 21-2 under the impact of driver element 10-5, and is supported by them, and rotates around described spool 1-1 axis positive dirction.Described auxiliary flute 8-2 drives described slide block 7-1 to move (5-12 and 21-3) along described slider support guide frame under the effect of corresponding ratchet-gear wheel 2-1, thus discharges described locking lever 7-2, and described in this process, Locking Device plays preloaded bearing.

Described locking lever 7-2 tilts under torsion spring 8-5 effect, but due to teeth directional reason, does not affect positive dirction and rotate.

After pretension action completes, described gas generator 11-4 reacts and terminates, and described spool 1-1 rotates backward under the traction of belt-strap.Described ratchet-gear wheel 2-1, due to teeth directional problem, interacts with described top recess 8-8 thus props described ratchet-gear wheel.Described spool is picked up after certain altitude, thus described ratchet-gear wheel engages with described ratchet section 5-15, and due to the constructional feature of ratchet, both are locked, and described spool 1-1 cannot rotate, thus belt-strap cannot rotate, and plays a protective role.

After described ratchet-gear wheel 2-1 engages with described ratchet section 5-15 and fixes, described locking lever 7-2 continues to rotate under the effect of torsion spring 8-5, enters release position, does not affect spool 1-1 subsequent action.

Then described torsion bar generation deformation, does not repeat herein.

In the present embodiment, described belt with pre-load device needs the electric elements such as corresponding controller and induction installation, does not describe herein.

Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.

Claims (16)

1. a retractor frame, be applied to the taking-up device of belt with pre-load device, described taking-up device comprises the spool and pre-tightening apparatus that are wound around belt-strap, described pre-tightening apparatus comprises generating means, pretension pipe and driver element, described driver element is under the effect of generating means, act on described spool by described pretension pipe, drive this spool to rotate;

It is characterized in that:

Described retractor frame comprises the biside plate being oppositely arranged also fixed distance apart and the backboard be fixedly installed at homonymy and biside plate; The corresponding described spool positions of biside plate is respectively arranged with through hole, biside plate is the first side plate and the second side plate, accordingly, on described first side plate is the first through hole, on described second side plate is the second through hole, and described first through hole and the second through hole are used for the structure of the relevant position of accommodating described spool; The region that described first side plate, the second side plate and backboard surround is spatial accommodation, and described spatial accommodation is used for accommodating described pretension pipe and described spool;

Described first through hole and/or the second through hole are provided with ratchet section corresponding to described belt-strap pull-out direction, and described spool is provided with ratchet-gear wheel corresponding on lead to the hole site, and described ratchet section comprises the ratchet coordinated with described ratchet-gear wheel;

Described ratchet-gear wheel hand of rotation when to rotate along tooth mode is called positive dirction, otherwise, be reversing sense;

On the edge of respective through hole, the position relative with described ratchet section is or/and the position close with described ratchet section relative position is provided with Locking Device, and this Locking Device comprises locking lever and slide block;

Described locking lever comprises its body, described its body is by being connected with respective side panels with the S. A. of spool axis parallel, this its body has extension along described ratchet-gear wheel circumferencial direction, and it is along the top of positive dirction being provided with the top recess with ratchet engagement on described ratchet-gear wheel;

Described its body can rotate around described S. A. under the effect of external force, and described top recess moves, with the ratchet engagement on described ratchet-gear wheel near described ratchet-gear wheel direction with rotation;

Described top recess can make this top recess this ratchet-gear wheel of jack-up matching with described ratchet section when ratchet engagement corresponding to described ratchet-gear wheel apart from the distance of described S. A.;

Described slide block comprises slider body, and described slider body is arcuation, comprises the drive configuration of intrados side and the slide construction of extrados side;

Described drive configuration has the contour structure identical with ratchet-gear wheel circumferential profile of setting radian, and this drive configuration, when contacting with described ratchet-gear wheel, can drive this slide block to slide along corresponding slider support guide frame under the drive of the ratchet of described ratchet-gear wheel;

Described slide construction has the contour structure with respective slide support guide structure bearing fit, can slide under the effect of external force along slider support guide frame;

During described Locking Device off working state, do not contact with ratchet-gear wheel, described slide block and described locking lever close, the apex structure of described its body is in below described slider body, and this slider body has the compressing structure stoping described its body to tilt;

Described slide block has perpendicular to spool axis relative to the arranged outside of described spatial accommodation and the slide block vertically-guided handle extended to spool axis.

2. retractor frame according to claim 1, is characterized in that: described top recess is this its body through on direction, parallel spool axis.

3. retractor frame according to claim 1, is characterized in that: described locking lever comprises torsion spring, and described its body can tilt around described S. A. under the effect of this torsion spring.

4. retractor frame according to claim 1, is characterized in that: described locking lever is arranged at position relative with described ratchet section on the edge of respective through hole.

5. retractor frame according to claim 1, is characterized in that: described slider body is camber platy structure.

6. retractor frame according to claim 1, is characterized in that: described drive configuration offers the auxiliary flute of at least one parallel described spool axis near the side of described spool.

7. retractor frame according to claim 6, is characterized in that: described auxiliary flute is at least three, and between be parallel to each other, spacing is equal.

8. retractor frame according to claim 1, is characterized in that: described drive configuration is provided with at least one auxiliary projection being parallel to described spool axis near the side of described spool.

9. retractor frame according to claim 8, is characterized in that: described auxiliary projection is at least three, and between be parallel to each other, spacing is equal.

10. retractor frame according to claim 1, is characterized in that: described compressing structure offers the engages indentation of this its body top corresponding construction accommodating corresponding to described its body apical position.

11. retractor frame according to claim 1, is characterized in that: be provided with bottom described slide block vertically-guided handle along being parallel to the slider guide projection that spool axis extends to the direction away from described spatial accommodation.

12. retractor frame according to claim 1, it is characterized in that: one end that described its body is relative with described top recess relative to described S. A. is provided with rotary steering projection, this rotary steering projection is circular arc bulge-structure, described retractor frame relevant position is provided with rotary steering recess, and described rotary steering recess has identical circular arc recess protruding with described rotary steering.

13. retractor frame according to claim 12, is characterized in that: described rotary steering recess is arranged at respective through hole edge.

14. 1 kinds of secondary side covers for the retractor frame of the claims 1, for being arranged at side plate lateral surface,

It is characterized in that:

Comprise guiding arc plate and directed side;

Described guiding arc plate is and the arc platy structure of slide block vertically-guided handle near the ends contact of spool, and this guiding arc plate has extension along the motion path of described slide block vertically-guided handle;

The corresponding described slide block vertically-guided handle lateral surface of described directed side is arranged, and has extension in slide block vertically-guided motion of handle region.

15. 1 kinds of secondary side covers for the retractor frame of the claims 11, for being arranged at side plate lateral surface,

It is characterized in that:

Comprise auxiliary guide frame, this auxiliary guide frame comprises guiding arc plate, direction recess and directed side;

Described guiding arc plate is and the arc platy structure of slide block vertically-guided handle near the ends contact of spool, and this guiding arc plate has extension along the motion path of described slide block vertically-guided handle;

Described direction recess is the groove structure of the accommodating slider guide projection corresponding to the setting of slider guide projection movement region;

The corresponding described slide block vertically-guided handle lateral surface of described directed side is arranged, and has extension in slide block vertically-guided motion of handle region.

16. 1 kinds of safety devices, is characterized in that: comprise the retractor frame described in any one of claim 1 to 13 and/or the secondary side cover described in any one of claim 14-15.