CN103832391B - A kind of retractor frame assembly and cover plate, safety device - Google Patents

Abstract

A kind of cover plate that the present invention provides, it is applied to belt with pre-load device coiler, this coiler includes spool and the pre-tightening apparatus being wound around belt-strap, the end face of retractor frame is provided with the described cover plate that matches with this retractor frame, described pretension pipe have through through described cover plate away from the prominent pipeline section in described receiving space, this cover plate offers the limiting holes limiting described pretension pipe.This design utilizes the described limiting holes on described cover plate to limit, fixing described pretension pipe, thus effectively simplifies the structure of described coiler and reduce the quality of described coiler.

Description

A kind of retractor frame assembly and cover plate, safety device

Technical field

The present invention relates to pretension coiler, be specifically related to a kind of retractor frame assembly.The invention still further relates to one Plant cover plate and a kind of safety device.

Background technology

Safety belt, as protecting the basic protector of driver and crew during collision scenario, is automobile weight The safety component wanted, its quality is to weigh the major criterion of automotive performance.

Being applied to the safety belt on automotive seat the earliest is standard three-point safety belt, the safety belt of this type By retaining mechanism and ribbon, user is limited on seat.But this simple design exist a lot Defect.

Firstly, since the subjective factor of comfort level and the objective factor such as certain thickness and ribbon elasticity, safety belt After fastening, ribbon relative usage person substantially has the biggest tensioning surplus, so may result in when automobile is sent out User during raw collision, because inertia departs from ribbon and limits, produces very serious consequence.Secondly, it is assumed that this three User can be limited on the seat by point seat belt when colliding, but owing to impact moment speed becomes Changing quickly, action time is short, and causing ribbon to act on the power with user would generally be very big, meeting time serious There is the fracture of ankle injury even rib.

Along with the progress of technology, vehicle safety increasingly comes into one's own, prefastening and pretension limit type safety Band technology occurs in succession, and is applied.

Belt with pre-load device is also referred to as preshrunk formula safety belt.The feature of this type safety belt is when automobile occurs When user not yet moves forward in a flash of collision, first ribbon can be tightened up, by user tightly Ground limits on the seat, then locking ribbon, is so possible to prevent user's forward lean or owing to inertia takes off Limit from ribbon.

Belt with pre-load device plays a major role for coiler.The coiler of belt with pre-load device is except commonly Outside the folding and unfolding ribbon function of coiler, also have when speed occurs drastically to change, it is possible at about 0.01 second Strengthen the function of the restraining force to user.Therefore it also has control device and pre-tightening apparatus.

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

When the accidents such as collision scenario being detected when induction installation, it is quick-fried that controller controls described gas generator Fried, launch described driver element.Described driver element impacts described spool under the guiding of described pretension pipe Make it rotate, thus complete to tighten up action.The most described spool is under the effect of ribbon pulling force and other mechanisms Locked relative to this retractor frame, it is impossible to rotate.

But belt with pre-load device equally exists defect.When automobile occurs unexpected, described pre-tightening apparatus is made The inertia force of the pretightning force being used on ribbon and user self forms the superposed force to user self, moment User may be caused serious injury by active force.And then occur in that the safety belt with limiter function.

Pretension limit type safety belt generally limits the size of pretightning force by limiter element or forcelimiting mechanism. Prior art arranges, in being typically employed in described spool, the torque arm that to a certain degree deformation can occur.

Concrete structure is, described pretension limit type safety belt include retractor frame, pre-tightening apparatus, spool, Torque arm, induction installation and controller.Described pre-tightening apparatus, induction installation and controller and described prefastening Safety belt is identical, repeats no more.

Described retractor frame is U-shaped framework, on the relative biside plate of described U-shaped framework, is provided with Through hole with internal tooth.Spool includes 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；The rotatable floating of described spool is arranged at On described U-shaped framework, and two end cap is respectively arranged in the through hole of described U-shaped framework, in normal state, External tooth on end cap does not engage with the internal tooth of described through hole, and spool can rotate in described through hole, to be wound around Ribbon or release ribbon.

Described torque arm is shaft-like, is arranged among spool along described reel axis, and at described spool along axle Line center is connected by interior external tooth engagement system；Additionally, described torque arm two ends are through described two end cap Center, is meshed with the internal tooth in two end cap outside stretching out end cap and by external tooth.

The above-mentioned pretension limit type safety belt course of work is as follows: when colliding, and induction installation triggers bag Include gas generator and tighten up ribbon at interior actuating mechanism action, promotion driving spool.Gas after about 0.01 second Body generator quits work.Ribbon makes spool rotate under the effect of user's inertia force, and in other actions Under the mating reaction of mechanism so that the external tooth on the end cap of spool is meshed with the internal tooth of U-shaped framework, will volume Axle is become lockup state from rotatable quick condition (alternatively referred to as free state).Make to be wrapped on spool Ribbon the most outwards discharge.Thus user is fixed on seat.In the process, ribbon bears Coming from the power moved forward that user produces due to inertia can be bigger and bigger, and this power is always led attempting The spool drawing spool rotates.But the end cap that spool is engaged with torque arm by the torque arm being engaged with and It is fixed in and cannot rotate on U-shaped framework.Torque arm generation is enabled to when the tractive force of ribbon is sufficiently large When distortion rotates, spool will occur the rotation of certain angle, so that ribbon can be released a segment length Degree, and then make user can produce forward certain displacement, alleviate ribbon and act on user Pulling force, has reached to limit ribbon and has acted on the effect of the power with user, it is thus achieved that limiter effect.

Above-mentioned safety belt in addition to the advantage with belt with pre-load device, also utilize the torque characteristic of torque arm to limit Make and be used in the size of power on user's health, and utilize the deformation of torque arm can discharge a small amount of ribbon, Extend action time further, reduce the ribbon active force to user further, thus to reach maximum limit The purpose of degree protection user.

As known from the above, coiler pretension pipe guide bullet body motion, when gas generator occur blast and When bullet body moves in coiler pretension pipe, very big to the impact of described coiler pretension pipe, especially institute State the pretension pipe port of export.

In order to ensure that described pretension pipe will not under the severe impact of described gas generator and described bullet body Impact is normal to be used, and need to be provided with special protection device, be usually and arrange with described pretension pipe deposition path Special protection board, this protection board is usually the metallic plate that quality is bigger, and each being provided with on protection board Plant the device limiting, fixing described pretension pipe.

Such design makes winder structure more complicated, and quality increases.

Summary of the invention

The present invention provides a kind of cover plate, to solve the problem that prior art construction is complicated and entirety is heavy.

A kind of retractor frame assembly that the present invention provides, is applied to the coiler of belt with pre-load device, described Coiler includes being wound around the spool of belt-strap and pre-tightening apparatus, described pre-tightening apparatus include generating means, Pretension pipe and driver element, described driver element is under the effect of generating means, by described pretension pipe effect In described spool, this spool is driven to rotate；

Including retractor frame and cover plate；

Described retractor frame includes being oppositely arranged the biside plate of also fixed distance apart and in homonymy and both sides The backboard that plate is fixedly installed；The corresponding described spool positions of biside plate is respectively arranged with two through hole, and biside plate is Side plate and the second side plate, accordingly, two through hole is the first through hole and the second through hole, described first through hole and Second through hole is for housing the structure of the relevant position of described spool；

The region that described first side plate, the second side plate and backboard surround is for accommodating space, and described receiving is empty Between be used for housing described pretension pipe and described spool；

The end face of described retractor frame, is i.e. drawn out the side in direction corresponding to described belt-strap, if It is equipped with the cover plate matched with this retractor frame, this cover plate is offered the limiting holes of through described cover plate, institute State pretension pipe to have through described limiting holes away from the prominent pipeline section in described receiving space, the rule of described limiting holes Lattice can limit the described pretension pipe of relevant position.

Optionally, described pretension pipe includes inverse u shape structure, and is arranged at described receiving at described pretension pipe Behind space, the bottom of the " u "-shaped of inverse u shape structure is towards described cover plate direction, and by described restriction Bore portion stretches out outside cover plate, and it stretches out deck portion is described prominent pipeline section；The length of described limiting holes is little In the Breadth Maximum of described " U " type structure and/or described limiting holes width less than the caliber of described prominent pipeline section.

Optionally, on the edge of the described cover plate of described backboard, it is provided with connection bump, this back of the body accordingly The connecting hole matched with this connection bump is offered on plate.

Optionally, described first side plate presses the cover plate of described cover plate to fix or/and described second side plate is provided with card Ear, it is coplanar with its place side plate that ear fixed by this cover plate, including the first connecting portion and the first lug boss；Described A junction connects its place side plate and described first lug boss, and this first lug boss is along being perpendicular to described backboard And away from there being extension on the direction of this backboard, described first lug boss and its gap thickness between the side plates Identical with cover sheet thickness described in relevant position, accordingly, corresponding to described first connecting portion on described cover plate Position be provided with avoid this first connecting portion interference dodge breach.

Optionally, described cover plate is fixed ear and is arranged on its place side plate the position near described backboard.

Optionally, on described cover plate, the position corresponding to side plate offers fixing hole, and this fixing hole is at described lid Extension is had on direction corresponding to described side plate on plate；Accordingly, the relevant position on described side plate is provided with The cover plate fixed lobe of described cover plate is fixed by fixing hole this described.

Optionally, described fixing hole is arranged at the position on described side plate away from described backboard.

Optionally, described cover plate fixed lobe is coplanar with respective side panels, protruding including the second connecting portion and second Portion, described second connecting portion connects its place side plate and described second lug boss, and described second lug boss is in institute State the length extended along respective side panels on cover plate and be more than described second connecting portion on corresponding cover plate along respective side panels The length extended, but the development length that the most described fixing hole is in respective side panels.

Optionally, described cover plate includes the first plate, the second plate and the 3rd plate successively along the direction away from this backboard, Line between described first plate and the second plate and between described second plate and the 3rd plate is respectively First Line and second Line, the edge that described 3rd plate is relative with described second line is referred to as the 3rd line, described First Line, described second Line and described 3rd line are parallel to each other and each parallel to described backboard, and described first plate is near described backboard, institute State the second line relative to First Line and the 3rd line away from described spool axis；Accordingly, described coiler frame Frame has the structure matched with described cover plate.

Optionally, described cover plate is provided with reinforcement.

Optionally, described cover plate being provided with ribbon guide pin bushing, described ribbon guide pin bushing is to knit described in described cover plate is Band pulls out the through district offered.

The present invention also provides for a kind of cover plate, is applied to the coiler of belt with pre-load device, and described coiler includes Spool, pre-tightening apparatus and retractor frame assembly；

Described spool is used for connecting and being wound around belt-strap；

Described pre-tightening apparatus includes generating means, pretension pipe and driver element, and described driver element is filling Under the effect put, act on described spool by described pretension pipe, drive this spool to rotate；

Described retractor frame assembly includes that retractor frame and cover plate, described retractor frame include relatively setting Put and the biside plate of fixed distance apart and the backboard that is fixedly installed at homonymy and biside plate；Biside plate is corresponding Described spool positions is respectively arranged with two through hole, and biside plate is the first side plate and the second side plate, 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 for housing the phase of described spool Answer the structure of position；

The region that described first side plate, the second side plate and backboard surround is for accommodating space, and described receiving is empty Between be used for housing described pretension pipe and described spool；

The end face of described retractor frame is positioned at this retractor frame corresponding to the described belt-strap side of being drawn out To side；

This cover plate is fixedly installed on the end face of retractor frame；

Described cover plate has the structure matched with described retractor frame；

The limiting holes of fixing described pretension pipe is offered on described cover plate；

Described pretension pipe includes inverse u shape structure, and after described pretension pipe is arranged at described receiving space, Towards described cover plate direction bottom the " u "-shaped of inverse u shape structure, and stretched out by described limiting holes part Outside cover plate, it stretches out deck portion is described prominent pipeline section；The corresponding physical dimension of described limiting holes is less than Described prominent pipeline section is corresponding to the maximum length of this limiting holes position and/or caliber.

Optionally, described cover plate is provided with on the edge of described backboard and coordinates with connecting hole on described backboard Connection bump.

Optionally, on described cover plate, the position corresponding to side plate offers fixing hole, and this fixing hole is at described lid Extension, described fixing hole is had to be arranged on described side plate away from described on direction corresponding to described side plate on plate The position of backboard.

Optionally, described fixing hole can allow the cover plate being arranged in respective side panels and coordinating with this fixing hole solid Surely project through.

Optionally, described cover plate includes the first plate, the second plate and the 3rd plate successively along the direction away from this backboard, Line between described first plate and the second plate and between described second plate and the 3rd plate is respectively First Line and second Line, the edge that described 3rd plate is relative with described second line is referred to as the 3rd line, described First Line, described second Line and described 3rd line are parallel to each other and each parallel to described backboard, and described first plate is near described backboard, institute State the second line relative to First Line and the 3rd line away from described spool axis.

Optionally, described 3rd plate being provided with fixing hole, this fixing hole can allow to be arranged in respective side panels And the cover plate fixed lobe coordinated with this fixing hole passes through.

Optionally, described cover plate being provided with ribbon guide pin bushing, described ribbon guide pin bushing is to knit described in described cover plate is Band pulls out the through district offered.

Optionally, described ribbon guide pin bushing is the rectangular opening being parallel to described backboard, and this rectangular opening edge is arranged There is boss.

Optionally, described cover plate is provided with reinforcement.

It addition, present invention simultaneously provides a kind of safety device, including a kind of coiler frame of above-mentioned arbitrary characteristics Frame assembly and/or a kind of cover plate of above-mentioned arbitrary characteristics.

A kind of cover plate that the present invention provides, is applied to belt with pre-load device coiler, and this coiler includes being wound around The spool of belt-strap and pre-tightening apparatus, the end face of retractor frame is provided with and matches with this retractor frame Close described cover plate, described pretension pipe have through through described cover plate away from the prominent pipeline section in described receiving space, The limiting holes limiting described pretension pipe is offered on this cover plate.This design utilizes the described limit on described cover plate Drilling limits, fixing described pretension pipe, thus effectively simplifies the structure of described coiler and reduce described volume Receive the quality of device.

Accompanying drawing explanation

Fig. 1 is the overall pattern of a kind of belt with pre-load device coiler that the present invention provides；

Fig. 2 is the structure chart of spool in Fig. 1；

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

Fig. 4 is the structure chart of retractor frame assembly in Fig. 1；

Fig. 5 is the structure chart of retractor frame in Fig. 1；

Fig. 6 is the structure chart of Fig. 1 cover plate；

Fig. 7 is the schematic diagram of locking system in Fig. 1；

Fig. 8 is the structure chart of locking system in Fig. 7；

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

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

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

Figure 12 is the structure chart of pretension pipe in Figure 10；

Figure 13 is the structure chart of drive unit assembly in Figure 10；

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

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

Figure 16 is the structure chart of unit jump ring in Figure 10；

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

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

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

Figure 20 is the explosive 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 system 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 torque arm, the 3-3: the first pedal wheel, 3-4: support board, 3-5: torque arm through hole, the 3-6: the second torque arm, 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 hole, 5-5: Cover plate fix ear, 5-6: pretension pipe auxiliary support, the 5-7: the second side plate, 5-8: cover plate fixed lobe, 5-9: Second through hole, 5-10: spool support structure, 5-11: assembling folding ear, 5-12, slide block the first support guide knot 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: reinforcement, the 6-7: the three plate, the 6-8: the three line, 6-9: fixing hole, 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: rotary shaft, 8-7: tip pocket, 8-8: compressing structure, 8-9: slider guide is protruding, 8-10: Slide block vertically-guided handle,

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

10-1: drive unit assembly, the 10-2: the first bolt, 10-3: pressure strip, 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 Portion's projection, 11-6: venthole, the 11-7: the first screwed hole,

12-1: the first relief hole, 12-2: unit pin installing hole, 12-3: pretension pipe guide frame, 12-4: Generating means connecting hole, 12-5: unit jump ring installing 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, 20-5: the first mounting ring, the 20-6: the second mounting ring,

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

22-1: generating means protective zone.

Detailed description of the invention

Elaborate a lot of detail in the following description so that fully understanding the present invention.But the present invention Can implement to be much different from alternate manner described here, those skilled in the art can without prejudice to Doing similar popularization in the case of intension of the present invention, therefore the present invention is not limited by following public being embodied as.

Fig. 1 is the overall pattern of the application schematic diagram belt with pre-load device coiler of the present embodiment, and this is described Belt with pre-load device coiler can be applicable to the various occasion that needs, and introduces herein as a example by automobile.

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

As in figure 2 it is shown, be the structure chart of described spool 1-1.Described spool 1-1 include reel body 2-2, Pedal wheel 2-3 and ratchet-gear wheel 2-1.Described reel body 2-2, pedal wheel 2-3 and the axis of ratchet-gear wheel 2-1 Overlap, be described spool 1-1 axis.

Described reel body 2-2 is shaft-like structure, is used for connecting and being wound around belt-strap, and it can be around wherein Axis rotates and belt-strap is wound around the belt-strap release being the most maybe wound around.

Described ratchet-gear wheel 2-1 or described pedal wheel 2-3 is arranged at described reel body 2-2 along described spool 1-1 At least one end in the two ends in direction, axis, the most described ratchet-gear wheel 2-1 both can be symmetrical arranged, and can set one side again Put；Described pedal is taken turns 2-3 and both can be symmetrical arranged, it is possible to unilateral setting, and both symmetrical or unilateral settings Select without correlative connection.

Described pedal wheel 2-3 includes at least one wheel plate.Described wheel plate is for being perpendicular to described spool 1-1 axis And the circular plate-like shape structure that its axis overlaps with described spool 1-1 axis, including uniform array distribution to institute State the driving recess that spool 1-1 axis extends.Described driving recess can be in the driving of described pre-tightening apparatus 1-3 Under, make described spool 1-1 rotate around this spool 1-1 axis.

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

Described pedal wheel 2-3 position is provided with ratchet-gear wheel 2-1, described ratchet-gear wheel 2-1 and is provided with phase Tongfang To ratchet.

Herein, described ratchet-gear wheel 2-1 is with the direction of rotation that rotates along the direction of teeth as positive direction, otherwise is negative side To.It is so-called to rotate the most described ratchet-gear wheel 2-1 along the direction of teeth in the rotary course of described spool 1-1 axis, The tooth crest of the single ratchet of this ratchet-gear wheel 2-1 is in the motion front of root portion all the time.

Fig. 3 is the explosive view of described spool 1-1.From figure 3, it can be seen that in the present embodiment, described spool The pedal wheel of 1-1 and ratchet-gear wheel are all symmetricly set in the two ends of described reel body 2-2, the respectively first ratchet 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 includes torque arm, support board 3-4 and torque arm through hole 3-5.

Described reel body 2-2 arranges support board 3-4, described support board along two ends before and after its axis 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 torque arm through hole 3-5, described torque arm through hole 3-5 along its axis For cylindrical hole.

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

Described torque arm is fixing with described reel body 2-2 after being placed in described torque arm through hole 3-5 to be connected.

In the present embodiment, described torque arm medium position vertically is provided with stage casing external tooth, described torque arm Through hole 3-5 is provided with internal tooth with matching, both engagements, play fixation.

Described torque arm uses segmental structure, i.e. includes the first torque arm 3-2 and the second torque arm 3-6, two sections Respective end on torque arm is provided with the external tooth knot matched with the internal tooth in described torque arm through hole 3-5 Structure.

Described torque arm has special mechanical property, and a small amount of torsional deflection can be allowed not to be damaged. In actual conditions, can be adapted to by modes such as the length ratios between selection different materials and segmentation torque arm Different torsional requirements.

Multiple company is there is between described reel body 2-2, support board 3-4, pedal wheel 2-3 and ratchet-gear wheel 2-1 Connect mode, design or the most adjacent two or more part Integral design can be integrated, according to actual conditions and peace Dress method determines.

In the present embodiment, described ratchet-gear wheel 2-1 is separable with described reel body 2-2, is so adapted to not Same retractor frame 4-2.Described torque arm is fixing with described ratchet-gear wheel 2-1 to be connected.The present embodiment is taked The mode that gear coordinates.

As shown in Figure 4, for the structure chart of shown retractor frame assembly 1-5, including retractor frame 4-2, Cover plate 4-1 and pretension pipe 4-3.

Fig. 5 is the structure chart of described retractor frame 4-2.

Described retractor frame 4-2 includes being oppositely arranged the first side plate 5-1 and second side of also fixed distance apart Plate 5-7, and the backboard 5-2 being fixedly installed at homonymy and biside plate.Described first side plate 5-1 and described Two side plate 5-7 except explanation difference in addition to, generally symmetrical structure.

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

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

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 described second corresponding described belt-strap pull-out direction of through hole 5-9 is provided with ratchet section 5-15, described ratchet It is provided with, on section 5-15, the ratchet matched with described ratchet-gear wheel 2-1.Under normal circumstances, described ratchet-gear wheel 2-1 Separate 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.

The district that described herein the first side plate 5-1, described second side plate 5-7 and described backboard 5-2 surround Territory is referred to as accommodating space, and described receiving space is used for housing 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, i.e. corresponding to described belt-strap It is drawn out the side in direction.This cover plate 4-1 is platy structure.Described cover plate 4-1 includes ribbon guide pin bushing 6-2, Described ribbon guide pin bushing 6-2 is the outlet that described belt-strap is drawn out described coiler.

Fig. 6 is the structure chart of cover plate 4-1.

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

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

The bottom of described retractor frame 4-2 connects base 1-2.

Figure 21 and Figure 22 is the structure chart of base.

Described base 1-2 includes base body 21-9, spool spacing bayonet socket 21-1, spool support cambered surface 21-2 With the spacing 21-6 of installation.

Complete assembling after, described spool spacing bayonet socket 21-1 be arranged at corresponding described pedal wheel 2-3 in wheel plate it Between interval position, if single wheel plate, this spool spacing bayonet socket 21-1 be arranged at described pedal wheel 2-3 with The position at interval between the part of side.

Described spool spacing bayonet socket 21-1 is at least one, can arrange according to actual conditions.This spool limiting card Mouth plays position-limiting action, prevents from jumping about described spool.

The spacing 21-6 of described installation contacts with described retractor frame 4-2 outer after assembling completes, and rises spacing Effect, facilitates both assemblings.

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

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

Figure 10 is the explosive view of pre-tightening apparatus 1-3.From fig. 10 it can be seen that described pre-tightening apparatus 1-3 includes Generating means 10-4, drive unit assembly 10-1 and pretension pipe 4-3.Described drive unit assembly 10-1 includes Several driver elements 13-1, is arranged in described pretension pipe 4-3.In this drive unit assembly, 10-1's drives The energy that described generating means 10-4 produces is passed to described volume in described pretension pipe 4-3 by moving cell 13-1 Axle 1-1 so that it is rotate around spool 1-1 axis.

Figure 11 is the explosive view of generating means 10-4, and described generating means 10-4 includes 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 include tank body body 11-2, chamber 11-3, pressure relief plate (not shown), lip projection 11-5, Closing cap 11-1 and venthole 11-5.Described chamber 11-3 is the circle being arranged on described tank body body 11-2 Cylindrical chamber, including the first chamber separated by described pressure relief plate and the second chamber.The circle of described first chamber Cylinder coordinates with described gas generator 11-4, and the action direction of described gas generator 11-4 is parallel to described The axis of chamber 11-3.Described second chamber is closed by described closing cap 11-1, and inside is placed with metal wool, Landing gentleness flow-disturbing effect.

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

In the present embodiment, the second relief hole is the through-hole structure being opened on described pressure relief plate, and can be by adjusting Whole through-hole diameter arranges and limits maximum pressure in the first chamber.

Described tank body body 11-2 offers the venthole 11-6 through with described first chamber.Described tank Body body 11-2 is arranged around lip projection 11-5 at described venthole 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, there is fixing device by tank body and described pretension Pipe 4-3 fixes.

By in Figure 10 it can be seen that in the present embodiment, described tank body and described pretension pipe 4-3 pass through pressure strip 10-3 and the first bolt 10-2 completes fixing between this tank body and this pretension pipe 4-3, corresponding described tank body The the first screwed hole 11-7 coordinated with the first bolt 10-2 it is provided with on body 11-2.

As shown in figure 19, in the present invention, described tank body and described pretension pipe 4-3 also can use clip 19-1 to enter Row is fixing to be connected.Figure 20 is the explosive view of clip 19-1.Described clip 19-1 include clip body 20-1, First mounting ring 20-5, the second mounting ring 20-6, the first contiguous block 20-2, the second contiguous block 20-4 and second Bolt 20-3.Described clip body 20-1 is loop configuration, and entirety coordinates with tank body circumferential profile.This clip Connect on body 20-1 and have the first mounting ring 20-5 and the second mounting ring 20-6 being oppositely arranged.Described first dress Join ring 20-5 and the second mounting ring 20-6 and be 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 and matches with the second bolt 20-3 The trapezoid block of the second screwed hole, two trapezoid blocks are arranged at described first mounting ring 20-5 and described second assembling Connected by the second bolt 20-3 after ring 20-6, in described second bolt 20-3 rundown process can by tank body and Pretension pipe 4-3 tightens up.

For ensureing the stability of pre-tightening apparatus 1-3, described pretension pipe 4-3 sets near described retractor frame 4-2 Put, and be provided with special fixing device.Described generating means is positioned at lower section and the position of described pre-tightening apparatus 1-3 Relative to described side plate away from the side of backboard 5-2 in described receiving space.

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

Described pretension pipe 4-3 includes public pipe, the first effect pipe and the second effect pipe.Described first effect pipe and Second effect tubular construction is identical, all includes that the functional component on spool 1-1 is pointed in an outlet, each outlet, I.e. pedal wheel 2-3；This first effect pipe and the second effect pipe with relative mode respectively with the two ends of described public pipe It is connected.

Concrete structure is as follows:

Described pretension pipe 4-3, by generating means 10-4, extends along the direction being perpendicular to side plate to biside plate, After arriving biside plate position, then bending extends along direction straight up, after arriving described cover plate 4-1 position, To described backboard 5-2 direction, bending extends, and after this backboard 5-2, bending downwards, is taken turns near described pedal Behind 2-3 position, described pedal wheel 2-3 is pointed in bending.

That is, described pretension pipe 4-3 is with the inverted U style setting near respective side panels, and wherein, inverted U is pre- Tight pipe 4-3 pipeline section has part to may pass through described cover plate 4-1, will be through this cover plate 4-1 away from described receiving space Part pretension pipe 4-3 be referred to as prominent pipeline section.

The pipeline section extended along side plate is the first effect pipe and the second effect pipe, extends along being perpendicular to side plate direction Pipeline section be public pipe.

By in Figure 10 it can be seen that described pretension pipe 4-3 and described generating means 10-4 mated position Bearing of trend is parallel with the axis direction of described chamber 11-3.

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

Pretension pipe has two outlets, and for ensureing stress equalization, this generating means connecting hole 12-4 is arranged at institute State on public pipe corresponding to described first effect pipe and the position of the second effect pipe symmetrical plane.

The first relief hole 12-1, unit pin installing hole 12-2 and unit card it is further opened with on described pretension pipe 4-3 Spring installing hole 12-5.

Described first relief hole 12-1 is the through hole of the tube wall offered on described pretension pipe 4-3 tube wall.This is first years old Residual gas pressure in pretension pipe 4-3 can be discharged rapidly after pretension process completes by relief hole 12-1, The fluctuation of belt-strap during mild limiter, and, this first relief hole 12-1 simple in construction, easily Realize.

As shown in figure 12, described first relief hole 12-1 is arranged at the knee of the described pretension pipe 4-3 port of export. This position is typically the region that described driver element is bigger to described pretension pipe 4-3 impact.

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

Described unit jump ring installing hole 12-5 fixes described pretension pipe 4-3 for engagement unit jump ring 10-6, should Unit jump ring 10-6 concrete structure is indicated below.

Owing to described pretension pipe 4-3 exists certain bending tube section.Described driver element 13-1 is at pretension pipe 4-3 Middle motion process can produce certain active force to pretension pipe 4-3 tube wall.The port of export of described pretension pipe 4-3 The trend of deviation predefined paths is had under described driver element effect.

The port of export of described pretension pipe can stop the side of described driver element deviation predefined paths to be referred to as pretension pipe Deviation side.

Described driver element 13-1 can occur amesiality centrifugal motion, institute after going out described pretension pipe 4-3 State pretension pipe deviation side and be positioned at the same side with centrifugal motion direction.

For making driver element 13-1 efficiency maximize, need the direction of motion of described driver element 13-1 is added To limit, guide its precise and high efficiency to beat and take turns 2-3 to described pedal.Therefore, described pretension pipe 4-3 is provided with Pretension pipe guide frame 12-3.

Described pretension pipe guide frame 12-3 tries one's best without hindrance connection with the inwall of pretension pipe 4-3 described in junction. In the present embodiment, described pretension pipe guide frame 12-3 working face and the described pretension corresponding inwall of pipe 4-3 Tangent.

In the present embodiment, described pretension pipe guide frame 12-3 is rectangular plate-like structure, has and described spool The limit of 1-1 axis parallel, the outlet section of this pretension pipe guide frame 12-3 and described pretension pipe 4-3 is by weldering Connect in succession.

Certainly, described pretension pipe guide frame 12-3 also can be formed by the cutting of the described pretension pipe 4-3 port of export, The structure being integrated with described pretension pipe 4-3.

This pretension pipe guide frame 12-3 may be guided described driver element 13-1 and accurately beats to described pedal wheel 2-3.

From figure 5 it can be seen that corresponding with described pretension pipe guide frame 10-3, side plate corresponding positions installs It is equipped with pretension pipe auxiliary and supports 5-6.

Described pretension pipe auxiliary supports 5-6 and is positioned on described retractor frame 4-2 corresponding to described pretension pipe guiding The position of structure 12-3, and be connected with the outer wall of described pretension pipe 4-3 relevant position, i.e. guide with pretension pipe Structure 12-3 connects.

In the present embodiment, it is identical with described pretension pipe guide frame 12-3 that described pretension pipe auxiliary supports 5-6 Rectangular plate-like structure.

Described pretension pipe auxiliary supports 5-6 for be obtained turnup structure by described retractor frame 4-2 flange.Certainly, Also can replace by the mode of welding plate object.

This pretension pipe auxiliary supports 5-6 and fixes with described pretension pipe guide frame 12-3 by the way of semi-stamping It is connected.Certainly may be used without other fixing connected modes such as welding makes both be fixedly linked.

As shown in figure 13, for the structure chart of drive unit assembly 10-1.Multiple driver element 13-1 head and the tail phase Cooperatively form complete soft drive chain mutually.Figure 14 is that driver element 13-1 is former with coordinating of pedal wheel 2-3 Reason figure.The belly that described driver element 13-1 bilateral symmetry is provided with the gear teeth on pedal wheel 2-3 coordinate is recessed Groove 13-2.Described driver element 13-1 beats and takes turns between 2-3 two wheel plate at this pedal after pedal wheel 2-3 In gap, described belly groove 13-2 engages with pedal wheel 2-3, thus improves drive efficiency.

The structure of described driver element 13-1 can determine 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, affect follow-up driver element 13-1 Engage with described pedal wheel 2-3 and other motions of described spool 1-1.Described spool spacing bayonet socket 21-1 will This driver element 13-1 peels off from described pedal wheel 2-3.

For effectively supporting described spool 1-1 and limiting described pretension pipe 4-3, described retractor frame assembly 1-5 A series of relevant design is made including utilizing self geometry feature.Hereafter will be described in detail.

Owing to the first side plate 5-1 and the second side plate 5-7 is platy structure, thickness is less, therefore, in pretension mistake The form touch of Cheng Zhong, the edge of the first through hole 5-14 and the second through hole 5-9 and spool 1-1 relevant position Area 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 Spool support structure 5-10 of the sustainable described i.e. ratchet-gear wheel 2-1 of spool 1-1 corresponding construction.This spool support is tied 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 respective through hole edge and described ratchet section The position that 5-15 is relative, and only arrange on a side plate.The present embodiment is arranged on the edge of the second through hole 5-9.

Described spool support structure 5-10 is that respective side panels forms to the flange that described receiving is spatially extended, this volume Shaft supporting structure 5-10 is and the structure of its place side plate one, along described spool 1-1 axis direction and periphery All there is extension in direction.Certainly, described spool support structure 5-10 and respective side panels can be Split type structure, both Fixing connection.

For ensureing that coiler has a series of in the stability made, described retractor frame assembly 1-5 Particular design.

Described backboard 5-2 is corresponding is provided with pretension pipe support protrusion 5-3 with described pretension pipe 4-3 position.Described Pretension pipe support protrusion 5-3 and described backboard 5-2 are structure as a whole, after part segmentation in described backboard 5-2 Forming to the bending of described receiving space inner, such simple in construction, it saves material.The most also can split knot Structure, uses the modes such as welding to connect.

When described pretension pipe 4-3 is in the installation site in described receiving space, this pretension pipe support protrusion 5-3 can act against on described pretension pipe 4-3.Because described pretension pipe 4-3 is tubular structure, for ensureing that it is steady Qualitative, described pretension pipe support protrusion 5-5 has certain extension on the axis direction along described pretension pipe 4-3, And align with the direction.It addition, described pretension pipe support protrusion 5-3 has near the side of described pretension pipe 4-3 There are the arc structure matched with this pretension pipe 4-3, i.e. supporting surface.

Particular location and quantity that described pretension pipe support protrusion 5-4 is arranged freely can determine according to actual conditions. Owing to leading because of the reason of described driver element 13-1 centrifugal force near the position of the port of export on described pretension pipe 4-3 Cause the unstability that this position is high compared with other positions, and in view of the cooperation of other structures, only select described On backboard 5-2, the position corresponding to the described pretension pipe 4-3 port of export arranges described pretension pipe support protrusion 5-3.

It can be seen that be provided with unit jump ring 10-6 in this pretension pipe support protrusion 5-3 from Figure 10 and Figure 15.

As Figure 16, described unit jump ring 10-6 include 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.Symmetrical centre is described jump ring head 16-1.Should Jump ring head 16-1 is bending structure, has with described connecting plate vertical for backboard 5-2 and hangs down with this connecting plate Straight action plate.Described action plate can by described unit jump ring installing hole 12-2 enter pretension pipe 4-3, and with The cooperation of corresponding described driver element 13-1, fixing described driver element 13-1, it is ensured that described driver element 13-1 Position and stability in off working state at ordinary times.

Figure 17 and Figure 18 is two kinds of structure principle charts of unit jump ring 10-6 and driver element 13-1, Figure 17 Described in the end of action plate enter described belly groove 13-2, action plate end described in Figure 18 is positioned at described The front end of driver element, limits the motion of this driver element 13-1, thus restriction with this driver element 13-1 is The motion of first drive unit assembly 10-1.Two kinds of active positions have heightened described unit jump ring 10-6's simultaneously Functioning efficiency.

Described action plate end has the inclined-plane along the driver element 13-1 direction of motion, described driver element 13-1 During motion, this inclined-plane can promote described connecting plate under the effect of driver element 13-1, makes described action plate take off From the moving region of described driver element 13-1, do not hinder pretension process.

When described driver element 13-1 impulsive force weakens, this action plate is weight under the elastic force of described connecting plate Newly entering described pretension pipe, fixing residue driver element 13-1, it is to avoid driver element 13-1 is to coiler for residue The impact of residue action.

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 includes limiting holes 6-11, connection bump 6-3 and fixing hole 6-9.

Described limiting holes 6-11 is arranged corresponding to described pretension pipe 4-3 position.For reaching to limit and fixing mesh , described pretension pipe 4-3 and the described cover plate 4-1 following structure of employing:

Described cover plate 4-1 offers and limits limiting holes 6-3 of prominent pipeline section described in described pretension pipe.Described limit Drilling 6-3 can house the described prominent pipeline section of described pretension pipe 4-3 just.

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

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

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

Described cover plate 4-1, at the edge near described backboard 5-2, is provided with connection bump 6-3, described connection When protruding 6-3 is in installation site, it is perpendicular to described backboard 5-2.Accordingly, corresponding on described backboard 5-2 Position offers cover plate connecting hole 5-4 with matching.For ensureing its stability, cover described in the present embodiment Plate connecting hole 5-4 is rectangular opening, and longer sides is for being perpendicular to side plate.

Described cover plate 4-1 distance between the length being perpendicular on side plate direction is more than biside plate, the most described lid When plate 4-1 is in installation site, there is the part beyond biside plate.Away from described backboard on described cover plate 4-1 It is elongated shape that the region of 5-2 and the position corresponding to biside plate offer fixing hole 6-9, described fixing hole 6-9 Square hole, the bearing of trend on its long limit is parallel to respective side panels.It is provided with cover plate fixed lobe on corresponding side plate 5-8。

Described cover plate fixed lobe 5-8 is coplanar with its place side plate and is connected to the tabular knot of this side board edge Structure, including the second connecting portion and the second lug boss.Described second connecting portion connects its place side plate and described Two lug bosses.Described second lug boss length in parallel respective side panels edge direction is more than described second even Connect portion's length in the same direction, but less than the length on the described long limit of fixing hole 6-9.

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

The guiding of described fixing hole 6-9 should allow second lug boss of described cover plate fixed lobe 5-8 integrally through This fixing hole 6-9, after installation, described cover plate fixed lobe 5-8, by rotating, can fix described cover plate 4-1。

For ensureing that effectively limiting described cover plate 4-1, described first side plate 5-1 and/or the second side plate 5-7 is provided with Card presses the cover plate of described cover plate 4-1 to fix ear 5-5.Described cover plate fixes ear 5-5 in respective side panels near institute The position stating backboard 5-2 is arranged, for the platy structure coplanar with its place side plate, including the first connecting portion and the One lug boss.Described first lug boss prolongs being perpendicular on the described backboard 5-2 direction away from this backboard 5-2 have Stretching, described first connecting portion connects its place side plate and described first lug boss near the one of described backboard 5-2 End.Described first lug boss just and can accommodate described cover plate 4-1 in phase with its space formed between the side plates Answer the part of position.

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

For coordinating said structure to fix, described cover plate 4-1 uses bending platy structure.This cover plate 4-1 is from backward Before include the first plate 6-1, the second plate 6-10 and the 3rd plate 6-7 successively, described first plate 6-1 and described backboard 5-2 contacts, and is perpendicular to described backboard 5-2.

Described first plate 6-1 and described second plate 6-10 and described second plate 6-10 and described 3rd plate 6-7 it Between intersection be respectively First Line 6-4 and the second line 6-5, described 3rd plate 6-9 and described second line 6-2 phase To line be referred to as the 3rd line 6-8, described First Line 6-4 and described second line 6-5 is parallel to each other, and the most parallel In described backboard 5-2.Described second line 6-5 is above described First Line 6-4.Described 3rd line 6-9 exists The lower section of described second line 6-5.

Described fixing hole 6-9 is arranged on described 3rd plate 6-7.

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

It is so designed that, can be merely with its geometry, it is not necessary to the union pieces such as screw can complete described cover plate Fixing and the restriction of 4-1.

On described cover plate 4-1, non-bore region connects has reinforcement 6-10 to increase its intensity.

Described retractor frame 4-2 is additionally provided with at least one assembling folding ear 5-11, and this assembling folding ear 5-11 is Being connected and coplanar platy structure with its place side plate, described assembling folding ear 5-11 is filling with other corresponding constructions Bend after through corresponding communicating structure after joining, thus reach fixation.This assembling folding ear 5-11 structure letter Single, and realize easily.

When automobile occurs unexpected, it is desirable to have locking system pushes described spool 1-1 to described ratchet section 5-15, The most locked, it is therefore desirable to special locking system.

Described locking system is arranged at described first through hole 5-14 and/or the non-ratchet section of described second through hole 5-9 Edge, the position relative with described ratchet section 5-15 is or/and be relatively closely located to described ratchet section 5-15 Position.

As it is shown in fig. 7, described locking system is arranged in described first through hole 5-14 edge and described ratchet section The position that 5-15 is relative.Described locking system includes locking lever 7-2 and slide block 7-1.

Described locking lever include its body 8-3, described its body 8-3 by with described spool 1-1 axle Parallel rotary shaft 8-6 of line is connected with respective side panels, and can rotate around this rotary shaft 8-6；Described its body 8-3 has extension along described ratchet-gear wheel 2-1 circumferencial direction, and it is provided with and described ratchet along the top of positive direction The tip pocket 8-7 that on wheel 2-1, ratchet coordinates；

The described tip pocket 8-7 distance away from described rotary shaft 8-6 can make this tip pocket 8-7 with described spine Jack-up this ratchet-gear wheel 8-1 matching with described ratchet section 5-15 when the corresponding ratchet of gear 2-1 coordinates；

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 includes torsion spring 8-5.Described its body 8-5 Can rotate around this rotary shaft 8-7 under the effect of torsion spring.

Certainly, described its body 8-3 also can rotate under the effect of other external force in addition to torsion spring 8-5, example 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, along described spine There is extension in gear 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 periphery Profile passes in described tip pocket 8-8.

One end relative with tip pocket 8-7 relative to described rotary shaft 8-6 for described its body 8-3 is provided with Rotary steering projection 8-4.Described rotary steering projection 8-4 is circular arc bulge-structure, described retractor frame 4-2 Relevant position is provided with rotary steering recess, and described rotary steering recess has and described rotary steering projection phase Same circular arc recess.This rotary steering projection 8-4 matches with corresponding rotary steering recess, supports and limits The rotary motion of described its body 8-3.

Described rotary steering recess 8-4 includes the first rotary steering recess 5-13 and the second rotary steering recess 21-4.It is convex corresponding to described rotary steering that described first rotary steering recess 5-13 is arranged at respective through hole edge Play the position of 8-4.Described second rotary steering recess 21-4 is arranged at described base 1-2 corresponding to described rotation Turn the position of guide protrusions 8-4.Described first rotary steering recess 5-13 and described second rotary steering recess 21-4 supports and limits the rotary motion of described its body 8-3 jointly.

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

Described slider body 8-1 is camber platy structure, including the driving structure of intrados side and extrados side Slide construction；

Described driving structure has the contour structure identical with ratchet-gear wheel circumferential profile setting radian, this driving Structure, when contacting with described ratchet-gear wheel 2-1, can drive this cunning under the drive of ratchet on described ratchet-gear wheel 2-1 Block slides along corresponding slider support guide frame；

Described slide construction has the contour structure being slidably matched with respective slide support guide structure, can be outside Slide along slider support guide frame under the effect of power；

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

Described slider body 8-1 is along described ratchet-gear wheel 2-1 periphery and is parallel on described spool 1-1 axis direction All there is extension, and the extension in described ratchet-gear wheel 2-1 peripheral direction is greater than and is parallel to described spool 1-1 axle Extension on line direction.

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

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

Described driving structure drives described slide block 7-1 along corresponding slider support when contacting with described ratchet-gear wheel 2-1 Guide frame slides；

Described driving structure is positioned at the described slider body 8-1 side near described spool 1-1.

At least three auxiliary flute 8-2 is offered in described driving structure.Between described auxiliary flute 8-2 mutually Parallel, and spacing is equal.Certainly being alternatively auxiliary projection, more than three are parallel to each other and spacing is equal, former Manage identical with auxiliary flute 8-2, increase ratchet and the frictional force driving structure when contacting with ratchet-gear wheel 2-1.

Described slider body 8-1 also includes compressing structure 8-8, and described compressing structure 8-8 is at described slide block 7-1 This locking lever 7-2 can be stoped to tilt when described locking lever 7-2.This compressing structure is corresponding to described thick stick Bar body 8-3 apical position offers the cooperation breach of accommodating this its body 8-3 top corresponding construction.

Described slide block 7-1 also includes guide frame.Described guide frame include slide block vertically-guided handle 8-10 and Slider guide projection 8-9.Described slide block vertically-guided handle 8-10 is arranged at described slider body 8-1 and corresponding side Plate is parallel and side away from described receiving space.Described slide block vertically-guided handle 8-10 is perpendicular to spool 1-1 Axis and to spool 1-1 axis extend.

Bottom described slide block vertically-guided handle, 8-10 is provided with slider guide projection 8-9, and described slider guide is protruding 8-9 extends away from the direction accommodating space along parallel with spool axis alignment.

It is provided with secondary side cover 1-4 outside described retractor frame 4-2, corresponding secondary side cover 1-4 is arranged The guiding arc plate 9-1 and direction recess 9-2 of restricted described slide block 7-2 motion.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 described slider guide is protruding 8-9 coordinates with described direction recess 9-2.Described guiding arc plate 9-1 and described direction recess 9-2 limits described The movement locus of slide block 7-1.

The side of the close corresponding secondary side cover 1-4 of described slide block vertically-guided handle 8-10 and this secondary side cover 1-4 On side contact, it is ensured that described slide block 7-1 stability in motion process.

Can only arrange guiding arc plate and directed side on described secondary side cover, accordingly, described slide block only sets Put slide block vertically-guided handle.

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

Described base 1-2 also includes that passage 21-7, driver element curved guiding surface 21-5, driver element buffer Step 21-8 and generating means protective zone 22-1.

Described passage 21-7 is the through-hole structure being opened on described base body 21-9, in can discharging in time Portion's high temperature and high pressure gas, prevents the destruction to other parts and damage.

Described driver element curved guiding surface 21-5 may be guided described driver element 13-1 and accurately enters base 1-2 phase Answer 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 that described base 1-2 is corresponding to described generating means 10-4 position The void space arranged, fixes and protects described generating means 10-4.

Belt with pre-load device specific works principle:

Under normal circumstances, described spool 1-1 and spool support structure 5-10, spool support cambered surface 21-2 and Locking system does not contacts.This spool 1-1 relies on corresponding bearing arrangement to support, can leading at belt-strap Under drawing freely rotatable.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 tilts.

When automobile occurs unexpected, the described the most instantaneous blast of gas generator 11-4, described driver element 13-1 Wash the restriction of described unit pin 10-5 and described unit jump ring 10-6 open, in the middle motion of described pretension pipe 4-3, And beat to described pedal wheel 2-3.Described spool 1-1 is close to described locking dress under the impact of driver element 10-5 Put, spool support structure 5-10 and spool support cambered surface 21-2, and supported by them, and around described spool 1-1 Axis positive direction rotates.Described auxiliary flute 8-2 drives described slide block under the effect of corresponding ratchet-gear wheel 2-1 7-1 moves (5-12 and 21-3) along described slider support guide frame, thus discharges described locking lever 7-2, During this, described locking system plays the effect of preloaded bearing.

Described locking lever 7-2 tilts under torsion spring 8-5 effect, but due to teeth directional reason, has no effect on pros To rotation.

After pretension action completes, described gas generator 11-4 reaction terminates, and described spool 1-1 is at safety belt Rotate backward under the traction of ribbon.Described ratchet-gear wheel 2-1 is due to teeth directional problem, with described tip pocket 8-8 phase Interaction thus prop described ratchet-gear wheel.Described spool is picked up after certain altitude, thus described ratchet-gear wheel with Described ratchet section 5-15 engages, and due to the design feature of ratchet, both are locked, and described spool 1-1 cannot turn Dynamic, thus belt-strap cannot rotate, and plays a protective role.

Described ratchet-gear wheel 2-1 engages with described ratchet section 5-15 after fixing, and described locking lever 7-2 is at torsion spring Continue under the effect of 8-5 to rotate, enter release conditions, do not affect spool 1-1 subsequent action.

The most described torque arm deforms upon, and does not repeats.

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

Although the present invention is open as above with preferred embodiment, but it is not for limiting the present invention, Ren Heben Skilled person without departing from the spirit and scope of the present invention, can make possible variation and amendment, Therefore protection scope of the present invention should be defined in the range of standard with the claims in the present invention.

Claims (21)

1. a retractor frame assembly, is applied to the coiler of belt with pre-load device, and described coiler includes Being wound around spool and the pre-tightening apparatus of belt-strap, described pre-tightening apparatus includes generating means, pretension pipe and drives Moving cell, described driver element, under the effect of generating means, acts on described spool by described pretension pipe, This spool is driven to rotate；

It is characterized in that:

Including retractor frame and cover plate；

Described retractor frame includes being oppositely arranged the biside plate of also fixed distance apart and in homonymy and both sides The backboard that plate is fixedly installed；The corresponding described spool positions of biside plate is respectively arranged with two through hole, and biside plate is Side plate and the second side plate, accordingly, two through hole is the first through hole and the second through hole, described first through hole and Second through hole is for housing the structure of the relevant position of described spool；

The region that described first side plate, the second side plate and backboard surround is for accommodating space, and described receiving is empty Between be used for housing described pretension pipe and described spool；

The end face of described retractor frame, is i.e. drawn out the side in direction corresponding to described belt-strap, if It is equipped with the cover plate matched with this retractor frame, this cover plate is offered the limiting holes of through described cover plate, institute State pretension pipe to have through described limiting holes away from the prominent pipeline section in described receiving space, the rule of described limiting holes Lattice can limit and house the prominent pipeline section of the described pretension pipe of relevant position.

Retractor frame assembly the most according to claim 1, it is characterised in that: described pretension pipe includes Inverse u shape structure, and after described pretension pipe is arranged at described receiving space, " U " of inverse u shape structure The bottom of shape is towards described cover plate direction, and outside stretching out cover plate by described limiting holes part, it stretches out lid Plate part is described prominent pipeline section；The length of described limiting holes less than described " U " type structure Breadth Maximum and / or described limiting holes width less than the caliber of described prominent pipeline section.

Retractor frame assembly the most according to claim 1, it is characterised in that: near described backboard It is provided with connection bump on the edge of described cover plate, offers on this backboard accordingly and match with this connection bump The connecting hole closed.

Retractor frame assembly the most according to claim 1, it is characterised in that: described first side plate or / and described second side plate be provided with card and press the cover plate of described cover plate to fix ear, this cover plate fixes ear and its side, place Plate is coplanar, including the first connecting portion and the first lug boss；Described first connecting portion connects its place side plate and institute Stating the first lug boss, this first lug boss edge is perpendicular to described backboard and away from there being extension on the direction of this backboard, Described first lug boss with its gap thickness between the side plates identical with cover sheet thickness described in relevant position, Accordingly, on described cover plate, position corresponding to described first connecting portion is provided with and avoids this first connecting portion and do That disturbs dodges breach.

Retractor frame assembly the most according to claim 4, it is characterised in that: ear fixed by described cover plate It is arranged on its place side plate the position near described backboard.

Retractor frame assembly the most according to claim 1, it is characterised in that: corresponding on described cover plate Offering fixing hole in the position of side plate, this fixing hole is on described cover plate on direction corresponding to described side plate There is extension；Accordingly, the relevant position on described side plate is provided with this fixing hole and fixes described cover plate Cover plate fixed lobe.

Retractor frame assembly the most according to claim 6, it is characterised in that: described fixing hole is arranged Away from the position of described backboard on described side plate.

8. according to the retractor frame assembly described in claim 6 or 7, it is characterised in that: described cover plate is solid Fixed protruding coplanar with respective side panels, including the second connecting portion and the second lug boss, described second connecting portion connects Its place side plate and described second lug boss, described second lug boss extends along respective side panels on described cover plate The length that extends along respective side panels on corresponding cover plate more than described second connecting portion of length, but no more than institute State fixing hole development length in respective side panels.

Retractor frame assembly the most according to claim 1, it is characterised in that: described cover plate along away from The direction of this backboard includes the first plate, the second plate and the 3rd plate successively, between described first plate and the second plate and Line between described second plate and the 3rd plate is respectively First Line and the second line, described 3rd plate and described second The edge that line is relative is referred to as the 3rd line, described First Line, described second line and described 3rd line be parallel to each other and Each parallel to described backboard, described first plate is near described backboard, and described second line is relative to First Line and Three lines are away from described spool axis；Accordingly, described retractor frame has and matches with described cover plate Structure.

Retractor frame assembly the most according to claim 1, it is characterised in that: set on described cover plate It is equipped with reinforcement.

11. retractor frame assemblies according to claim 1, it is characterised in that: arrange on described cover plate Have ribbon guide pin bushing, described ribbon guide pin bushing be described cover plate be that described ribbon pulls out the through district that offers.

12. 1 kinds of cover plates, are applied to the coiler of belt with pre-load device, and described coiler includes spool, pre- Tight device and retractor frame assembly；

Described spool is used for connecting and being wound around belt-strap；

Described pre-tightening apparatus includes generating means, pretension pipe and driver element, and described driver element is filling Under the effect put, act on described spool by described pretension pipe, drive this spool to rotate；

Described retractor frame assembly includes that retractor frame and cover plate, described retractor frame include relatively setting Put and the biside plate of fixed distance apart and the backboard that is fixedly installed at homonymy and biside plate；Biside plate is corresponding Described spool positions is respectively arranged with two through hole, and biside plate is the first side plate and the second side plate, 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 for housing the phase of described spool Answer the structure of position；

The region that described first side plate, the second side plate and backboard surround is for accommodating space, and described receiving is empty Between be used for housing described pretension pipe and described spool；

The end face of described retractor frame is positioned at this retractor frame corresponding to the described belt-strap side of being drawn out To side；

It is characterized in that:

This cover plate is fixedly installed on the end face of retractor frame；

Described cover plate has the structure matched with described retractor frame；

The limiting holes of fixing described pretension pipe is offered on described cover plate；

Described pretension pipe includes inverse u shape structure, and after described pretension pipe is arranged at described receiving space, Towards described cover plate direction bottom the " u "-shaped of inverse u shape structure, and stretched out by described limiting holes part Outside cover plate, it stretches out deck portion for prominent pipeline section；The corresponding physical dimension of described limiting holes is less than described Prominent pipeline section is corresponding to the maximum length of this limiting holes position and/or caliber.

13. a kind of cover plates according to claim 12, it is characterised in that: described cover plate is near the described back of the body The connection bump coordinated with connecting hole on described backboard it is provided with on the edge of plate.

14. a kind of cover plates according to claim 12, it is characterised in that: corresponding to side on described cover plate The position of plate offers fixing hole, and this fixing hole has on direction corresponding to described side plate on described cover plate and prolongs Stretching, described fixing hole is arranged at the position on described side plate away from described backboard.

15. a kind of cover plates according to claim 14, it is characterised in that: described fixing hole can allow to set The cover plate fixed lobe being placed in respective side panels and coordinate with this fixing hole passes through.

16. a kind of cover plates according to claim 12, it is characterised in that: described cover plate is along away from this back of the body The direction of plate includes the first plate, the second plate and the 3rd plate successively, between described first plate and the second plate and described Line between second plate and the 3rd plate is respectively First Line and the second line, described 3rd plate and described second line phase To edge be referred to as the 3rd line, described First Line, described second line and described 3rd line are parallel to each other and the most flat Row is in described backboard, and described first plate is near described backboard, and described second line is relative to First Line and the 3rd line Away from described spool axis.

17. a kind of cover plates according to claim 16, it is characterised in that: it is provided with on described 3rd plate Fixing hole, this fixing hole can allow the cover plate fixed lobe being arranged in respective side panels and coordinating with this fixing hole Pass through.

18. a kind of cover plates according to claim 12, it is characterised in that: it is provided with on described cover plate and knits Band guide pin bushing, described ribbon guide pin bushing be described cover plate be that described ribbon pulls out the through district that offers.

19. a kind of cover plates according to claim 12, it is characterised in that: described ribbon guide pin bushing is parallel In the rectangular opening of described backboard, and this rectangular opening edge is provided with boss.

20. a kind of cover plates according to claim 12, it is characterised in that: it is provided with on described cover plate and adds Strong muscle.

21. 1 kinds of safety devices, it is characterised in that: include the one described in any one of claim 1 to 11 A kind of cover plate described in retractor frame assembly and/or any one of claim 12 to 20.