CN208360111U - A kind of self-locking coiler of safety and comfort - Google Patents

Abstract

The utility model embodiment discloses a kind of self-locking coiler of safety and comfort, it is characterized in that, including installation pedestal, roll-up spindle, clockwork group, passive self-locking group, buffer coupling, the roll-up spindle is rotatably connected in the installation pedestal, the clockwork group is connected directly between in the roll-up spindle, and described passive self-locking group is sequentially connected by the buffer coupling and the roll-up spindle.The utility model self-locking device engagement area is bigger more reliable, and safety is higher, and has buffer unit, reduces safety belt to the moment impact of people, comfort greatly promotes under the premise of not sacrificing security.

Description

A kind of self-locking coiler of safety and comfort

Technical field

The utility model relates to seat belt retractor field, in particular to the self-locking coiler of a kind of safety and comfort.

Background technique

With China's economy, the raising of the development of science and technology and living standards of the people, the automobile manufacture amount in China, automobile consumption Amount climbs up and up, and safety belt is configured as the important safety of automobile indispensability, also by increasingly higher demands.

Safety belt generally furls on self-locking coiler in the case where bringing to a halt, passenger's body quickly leans forward, safety belt Rapidly being pulled out and touching self-locking coiler carries out self-locking, so that safety belt be made not continue to pull out, but passenger restraint is existed On seat, play the role of safeguard protection；The self-locking mode of coiler mostly uses internal tooth ratchet at present, and sets inside ratchet Inert block and pawl are set, pushes click engagement to carry out locking by inert block, due to needing that a variety of knots are arranged inside ratchet Structure, space is narrow, therefore only one general small pawl is engaged locking, and engagement area is smaller, is easy to appear slipping state, And the torque that small pawl can be born is lower, it may occur however that the case where breaking, and it is daily during pulling and withdrawing safety belt, Pawl ratchet is often in Frotteurism, is used for a long time down so that pawl frictional dissipation is thinning, and the tooth height of ratchet is also lower, this Kind abrasion further reduces engagement area, brings slip teeth, collapses the danger such as tooth, there are security risks.

When coiler is self-locking, often in a flash with regard to locking, and safety belt itself is almost without elasticity, therefore anxious The inertia energy of human body is acted on completely on the band-like area that safety belt is contacted with people when brake, and moment impact is very big, Ke Nengzao At joint, the damage of muscle or skin ankle injury.

Utility model content

The technical problem to be solved by the embodiment of the utility model is, a kind of self-locking coiler of safety and comfort is provided, Self-locking device engagement area is bigger more reliable, and safety is higher, has buffer unit, reduces safety belt to the moment impact of people, Comfort greatly promotes.

In order to achieve the above objectives, the utility model discloses a kind of self-locking coiler of safety and comfort, including installation pedestal, Roll-up spindle, clockwork group, passive self-locking group, buffer coupling, the roll-up spindle are rotatably connected in the installation pedestal, the hair Item group is connected directly between in the roll-up spindle, and described passive self-locking group is connected by the buffer coupling and roll-up spindle transmission It connects；

The installation pedestal includes installation backboard, left substrate, right substrate, connecting plate, the left substrate and right substrate difference The two sides of the installation backboard are vertically connected on, the connecting plate is connected to the left substrate and right substrate, the left base simultaneously Plate and right substrate be it is arranged symmetrically, there is coaxial circular through hole, the roll-up spindle is mounted on the left substrate and right substrate In circular through hole on the left substrate and right substrate, it is provided with and turns between the roll-up spindle and the through-hole of the left and right substrate Moving axis set；

The clockwork group includes spring, going barrel, and the spring retracting is in the going barrel, the spring One end of clockwork spring volume is connected directly between in the roll-up spindle of the going barrel, and the going barrel is fixed in the installation base On seat；

Described passive self-locking group includes linkage shell, fixing shell, ratchet wheel, inertia pawl, the linkage shell and The roll-up spindle transmission connection, the fixing shell are fixed in the installation pedestal, and the ratchet wheel is fixed in described solid Determine housing center, is rotatably connected to two or more than two symmetrical inertia pawl on the linkage shell, it is described Inertia pawl one end is to engage cooperation with the ratchet wheel, and the inertia pawl other end is connected to the linkage by spring On shell inner cavity wall, the inertia pawl drives towards convex globoidal, the roll-up spindle is provided on the end face of the ratchet wheel When the linkage shell rotates too fast, the inertia pawl, which shifts, engages the ratchet wheel；

Passive self-locking group of the linkage shell is sequentially connected by the buffer coupling and the roll-up spindle, described slow Rushing connector includes buffer shell, rotating base, star buffer stopper, and the buffer shell is fixed in the installation pedestal On, the star buffer stopper transmission connection is in the roll-up spindle, and the rotating base is rotatably connected in the roll-up spindle, institute Rotating base to be stated to be fixed together with the linkage shell, the rotating base has the cavity for accommodating the star buffer stopper, There are several convex blocks, the star buffer stopper is set between several convex blocks, the volume in the cavity of the rotating base Receiving axis drives the star buffer stopper rotation to squeeze the convex block, and then the rotating base and the linkage shell is pushed to turn It is dynamic.

It preferably, further include the active tightening group being connected in the roll-up spindle, the active tightening group includes gas hair Raw device actively tightens rack gear, actively tightens gear, actively tightening assembly housing, and the assembly housing of actively tightening has cylinder End, the gas generator rotation riveting are mounted on the cylinder-shaped end, and the rack gear of actively tightening is slidably mounted on the master In dynamic tightening assembly housing, it is described actively tighten rack gear engage it is described actively tighten gear, it is described actively to tighten gear and the volume Axis transmission connection is received, it is described actively to tighten assembly housing, active tightening group rack gear bottom surface, gas generator top surface three composition one Closed cavity collides gas generator when occurring and generates high pressure gas and discharge into institute from the gas generator top surface Closed cavity is stated, and then pushes the rack gear of actively tightening to slide and the gear of actively tightening is driven to rotate, and then make described Roll-up spindle rotation tightening safety belt.

Preferably, the gear of actively tightening is sequentially connected by urgent connector and the roll-up spindle, described promptly to connect The roll-up spindle can just be connected in the effect of active tightening group by connecing device, and the urgent connector includes being fixed in the active tightening Rotating wheel, sliding fixture block, cover board on gear, the rotating wheel is interior to have cavity, and the cavity is by circular cavity and triangle Cavity combinations form, the cover plate lid in the side of the cavity, the roll-up spindle pass through the circular cavity and not with it is described Rotating wheel contact, is provided with sliding fixture block in the triangular cavity between the rotating wheel and the roll-up spindle, on the cover board The jack that bolt is inserted on the sliding fixture block is stretched out, so that the sliding fixture block position be made to fix and not connect with the roll-up spindle Touching.

Compared with the prior art, the utility model has the beneficial effects that:

Pawl and inertial mass are combined into inertia pawl by optimization design, so that pawl volume is bigger, anti-impact force It is stronger, and engaged by multiple ratchets with ratchet and carry out locking, engagement area is bigger, can integrally bear the torque of transmitting more Greatly, safety is more secure；Friction under non-lockup state between pawl ratchet is line contact or point contact, and the small rotation that rubs is smooth, And ratchet not easy to wear or pawl, torque bearing performance will not be reduced by being used for a long time；Passive self-locking group passes through buffer coupling It is driven with roll-up spindle, therefore when triggering self-locking, roll-up spindle does not stop operating not instead of in a flash, has in buffer coupling Certain rotation space, and squeeze buffer stopper deformation progress elastic endergonic and will not influence safety belt since displacement is very low and fix The basic function of occupant, and buffer stopper uses star structure, disperses torsion by multi-terminal link, so that the torque of buffer stopper is held By very competent, safety is unaffected, and can but be greatly reduced the moment impact to human body, be improved the comfortable of occupant Property.

Detailed description of the invention

Fig. 1 is the utility model embodiment overall structure diagram；

Fig. 2 is passive tightening group overall structure diagrammatic cross-section；

Fig. 3 is the non-lockup state matching relationship schematic diagram of passive tightening group；

Fig. 4 is passive tightening group lockup state matching relationship schematic diagram；

Fig. 5 is the inertia pawl structures schematic diagram of passive tightening group；

Fig. 6 is buffer coupling overall structure diagram；

Fig. 7 is the rotating base structural schematic diagram of buffer coupling；

Fig. 8 is the star buffer block structure schematic diagram of buffer coupling；

Fig. 9 is active tightening group overall structure diagram；

Figure 10 is urgent connector overall structure diagram；

Figure 11 is urgent connector interfitting relationship schematic diagram；

Figure 12 is active tightening group and urgent connector matching relationship schematic diagram；

Figure 13 is clockwork group structural schematic diagram；

Marked in the figure: 1- installation pedestal, 2- roll-up spindle, 3- clockwork group, passively self-locking group of 4-, 5- active tightening group, The urgent connector of 6-, 7- buffer coupling, the left substrate of 11-, the right substrate of 12-, 13- connecting plate, 21- axle sleeve, 22- volumes Tape spool, 31- going barrel, 32- spring, 41- linkage shell, 42- inertia pawl, 43- ratchet wheel, 44- reset Spring, 45- fixing shell, 51- gas generator, 52- actively tighten rack gear, and 53- actively tightens gear, and 54- is actively received Tight assembly housing, 55- sealing ring, the 56- rotation position riveter, 57- closed cavity, 61- rotating wheel, 62- first slide fixture block, 63- second slides fixture block, 64- cavity, 65- jack, 66- cover board, the easily broken bolt of 67-, 71- buffer shell, 72- Rotating base, 73- star buffer stopper, 421- pawl shaft, 422- engage projection, 423- convex globoidal, the installation of 431- ratchet Hole, 432- engage recess, 721- convex block, 722- buffer cavity, 731- support ring, 732- buffering raised line.

Specific embodiment

To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the attached drawing of Fig. 1-Figure 13 The utility model is described in further detail.

Referring to Fig.1 shown in-Figure 13, roll-up spindle 2 is mounted on the circle between the left substrate 11 of installation pedestal 1 and right substrate 12 In shape through-hole, it is provided with axle sleeve 21 between roll-up spindle 2 and left and right substrate 11,12 and reduces friction, is also connected with volume in roll-up spindle 2 Tape spool 22 is sequentially connected clockwork group 3, buffer coupling 7, passively self-locking group for winding retracting safety belt, 2 left end of roll-up spindle 4,2 right end of roll-up spindle is sequentially connected urgent connector 6, active tightening group 5.

2 right end of roll-up spindle does not contact under normal circumstances with urgent connector 6, active tightening group 5, only in active tightening group 5 when being triggered, urgent connector 6 just actively and 2 Contact Transmission of roll-up spindle, to drive the rotation of roll-up spindle 2 and actively tighten peace Full band.

Urgent connector 6 includes that rotating wheel 61, first slides fixture block 62, second sliding fixture block 63, cover board 66, rotating wheel 61 Side is fixed together with gear 53 is actively tightened, and 61 other side of rotating wheel has cavity 64, and the cavity 64 is by circular cavity It is constituted with the cavity of two class triangles, the roll-up spindle 2 that the circular cavity is extended into occupies, the class triangle of 2 two sides of roll-up spindle It is occupied respectively by the first sliding fixture block 61 and the second sliding fixture block 62 in shape cavity, the cover board 66 covers the cavity, described The jack 65 being provided on cover board 66 on the easily broken insertion of bolt 67 sliding fixture block, so that sliding fixture block position fixation be made not slide Dynamic, normal condition lower slider fixture block is adjacent to rotating wheel 61 and does not contact with roll-up spindle 2, when active tightening group 5 is triggered, gas hair Raw device 51, which generates high pressure gas promotion, actively tighten rack gear 52 and moves upwards, be engaged with actively tighten gear 53 rotate thus Rotating wheel 61 is driven to rotate, cover board 66 is fixedly connected in installation pedestal 1 and not can rotate, and rotating wheel 1 drives sliding fixture block rotation To make easily broken bolt 67 be cut, sliding fixture block is rotated the medial surface of wheel 61 and the outer surface of roll-up spindle 2 clamps, so that volume It receives axis 2 to rotate to furl safety belt with rotating wheel 61, occupant is retracted and is adjacent on seat.

Active tightening group includes gas generator 51, actively tightens rack gear 52, actively tightens gear 53, outside active tightening group Shell 54, sealing ring 55, gas generator 51 revolve riveting and are mounted on the position rotation riveter 56 for actively tightening 54 one end of assembly housing, actively receive Tight inside rack gear 52 setting and actively tighten assembly housing 54, actively tighten the bottom surface of rack gear 52 with actively tighten assembly housing 54 it Between be additionally provided with sealing ring 55 so that actively tightening 52 bottom surface of rack gear, actively tightening assembly housing 54,51 top surface three of gas generator Person constitutes a closed cavity 57 and signal is passed to gas when the sensor for being set to vehicle outer rim perceives vehicle and collides Body generator 51, gas generator 51 generates high pressure gas and injects closed cavity 57, and then pushes and actively tighten rack gear 52 upwards It is mobile, and then push to be engaged on actively to tighten and actively tighten the rotation of gear 53 on rack gear 52, so that rotating wheel 61 is driven to rotate, Urgent connector 6 is engaged with roll-up spindle 2, so that the rotation of roll-up spindle 2 be driven actively to tighten safety belt.Gas generator 51 passes through rotation Riveter skill, which is mounted on, actively to be tightened on assembly housing 54, and the huge rear pushing generated when gas generator 51 works can be easily born Power, than in the past by the way of screw it is more reliable, there is no loosen the case where, abnormal sound or vibration will not be brought, avoid gas Generator 51 automatic trigger or failure under long-term vibration ensure that the validity and stability of gas generator 51.

Installation pedestal 10 includes left substrate 11, right substrate 12 and connecting plate 13, and roll-up spindle 2 is rotatably connected on by axle sleeve 21 On left and right substrate 11,12, so that the installation of roll-up spindle 2 is firm, frictional dissipation is small, rotation is smooth, 2 both ends of roll-up spindle are stretched out left and right Substrate 11,12 is set to left and right substrate 11, each component of 12 two sides is fixed in left and right substrate 11,12 by respective shell On, to reduce support of the roll-up spindle 2 to each component, suffered radial force is small, it is bigger by twisting resistance ratio, therefore frictional dissipation Smaller, use is more smooth.

Clockwork group 3 includes going barrel 31 and spring 32, and the retracting of spring 32 is in going barrel 31 and is directly connected to In roll-up spindle 2, retracting power conduction is more direct, is lost smaller.

Passive self-locking group 4 includes linkage shell 41, inertia pawl 42, ratchet wheel 43, reset spring 44, fixing shell 45, linkage shell 41 and roll-up spindle 2 are sequentially connected, and fixing shell 45 is fixed in installation pedestal 1, and ratchet wheel 43 passes through ratchet Mounting hole 431 is fixed in 45 middle part of fixing shell, and inertia pawl 42 is preferably two, is symmetricly set on 43 two sides of ratchet wheel, Inertia pawl 42 is rotatably connected on linkage shell 41 by pawl shaft 421, and one end of inertia pawl 42 has engagement projection 422, there is engagement recess 432, engagement projection 422 and engagement recess 432 form engagement cooperation, inertia pawl on ratchet wheel 43 42 other end is connected on the internal chamber wall of linkage shell 41 by reset spring 44, when roll-up spindle 2 drives 41 turns of shell of linkage When moving too fast, inertia pawl 42 is caught in engagement projection 422 in engagement recess 432, so that inertia spine since inertia rotates Pawl 42 and ratchet wheel 43 mesh together, thus prevent link shell 41 and be connected to linkage shell 41 on roll-up spindle 2 from It continues to rotate, realizes that the locking of safety belt, reset spring 44 pull inertia pawl 42 to reset when pulling force weakens.

Inertia pawl 42 is towards having convex globoidal 423 on the side wall of ratchet wheel 43, so that inertia pawl 42 and outer tooth papillae It is contacted when wheel 43 rotates under non-engagement state for line, frictional force is smaller, and pulling is more smooth, while will not wear site of engagement Thickness, ensure that engagement area, and safety is more secure.

The shell 41 that links is sequentially connected by buffer coupling 7 and roll-up spindle 2, and buffer coupling 7 includes buffer shell 71, rotating base 72, star buffer stopper 73 have the buffer cavity 722 for accommodating star buffer stopper 73 on rotating base 72, Several convex blocks 721 are provided in buffer cavity 722, several convex blocks 721 are distributed in evenly and at intervals on 722 inner wall of buffer cavity, Star buffer stopper 73 is starfish appearance structure, including support ring 731 and several buffering raised lines for extending out from 731 side wall of support ring 732, several buffering raised lines 732 are distributed in evenly and at intervals on 731 side wall of support ring, and buffer cavity 722 is by star buffer stopper 73 Wherein, buffering raised line 732 is arranged in the vacancy between several convex blocks 721 suit, and the support ring 731 of star buffer stopper 73 is set with It is rotated in roll-up spindle 2 and with roll-up spindle 2, linkage shell 41 is connected on rotating base 72；The rotation of roll-up spindle 2 drives star slow The rotation of block 73 is rushed, so that the buffering rotation of raised line 732 presses convex block 721, rotating base 72 is driven to rotate, turned to drive and be connected to Linkage shell 41 on dynamic pedestal 72 rotates, and when roll-up spindle 2 rotates too fast suddenly, is rotatably connected on used on linkage shell 41 Property pawl 42 shift, engaged with the ratchet wheel 43 being fixed in fixing shell 45, thus locking link shell 41, in turn Locking roll-up spindle 2；After 41 locking of shell that links, roll-up spindle 2 to make roll-up spindle since human body inertia leans forward pulling force there is also one The rotatory force continued to rotate, when direct locking linkage shell 41, all energy acted in the contact area of human body and safety belt, Ankle injury etc. can be caused to injure, the utility model embodiment linkage shell 41 is linked by star buffer stopper 73 and roll-up spindle 2, linkage After 41 locking of shell, elastic deformation occurs for the extrusion lug 721 in the cavity 722 of rotating base 72 of star buffer stopper 73, so that Roll-up spindle 2 still has a small amount of rotation space, and absorbs part energy by the elastic deformation of star buffer stopper 73 during rotation Amount, to reduce injury of the safety belt to people.

The utility model embodiment roll-up spindle is connected in installation pedestal by axle sleeve, and installation pedestal is stretched out for connecting in both ends Connection function component, each functional component are connected in installation pedestal layer by layer, do not have radial pressure, roll-up spindle frictional dissipation to roll-up spindle Minimum, retracting power directly transmits no spacious amount, using smooth without loosening, shake or abnormal sound, experiences splendid；Each functional component dress With high-efficient, good product consistency, quality is high and stablizes；Maintenance replacement cost is lower, needs with previous a certain function damage whole A to remove difference, the utility model embodiment only needs to change the functional component of damage, without removing mounting seat, Bu Huiyin Vehicle body frame is caused to damage for dismounting mounting base, reduces security risk, and there is extremely strong scalability；Pass through optimization Passive self-locking group of design, closes pawl and conventional inertia agllutination to form inertia pawl, so that pawl volume is bigger, anti-impact force It is stronger, and engaged by multiple ratchets with ratchet and carry out locking, engagement area is bigger, can integrally bear the torque of transmitting more Greatly, safety is more secure；Rubbing surface is line contact or point contact, and the small rotation that rubs is smooth, and ratchet not easy to wear or pawl, Torque bearing performance will not be reduced by being used for a long time, it is ensured that locking prevents slip teeth and collapses tooth；Passive self-locking group is connected by buffer coupling It connects in roll-up spindle, so that safety belt still has elastic expansion range when triggering locking, reduces the instant impact to occupant, Situations such as avoiding the occurrence of ankle injury not only ensuring safety property but also had ensured comfort.

Certainly the above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with this The people of technology can understand the content of the utility model and implement accordingly, and the protection model of the utility model can not be limited with this It encloses, any modifications made in accordance with the spirit of the main technical solutions of the utility model, should all cover the guarantor in the utility model Within the scope of shield.

Claims (3)

1. a kind of self-locking coiler of safety and comfort, which is characterized in that including installation pedestal, roll-up spindle, clockwork group, passive self-locking Group, buffer coupling, the roll-up spindle are rotatably connected in the installation pedestal, and the clockwork group is connected directly between the retracting On axis, described passive self-locking group is sequentially connected by the buffer coupling and the roll-up spindle；

The installation pedestal includes installation backboard, left substrate, right substrate, connecting plate, and the left substrate and right substrate are respectively perpendicular The two sides of the installation backboard are connected to, the connection board ends respectively connected the left substrate and right substrate, the left base Plate and right substrate be it is arranged symmetrically, there is coaxial circular through hole, the roll-up spindle is mounted on the left substrate and right substrate In circular through hole on the left substrate and right substrate, it is arranged between the roll-up spindle and the circular through hole of the left and right substrate There is rotary axle box；

The clockwork group includes spring, going barrel, and the spring retracting is in the going barrel, the spring One end be connected directly between in the roll-up spindle of the going barrel, the going barrel is fixed in the installation pedestal；

Described passive self-locking group includes linkage shell, fixing shell, ratchet wheel, inertia pawl, the linkage shell with it is described Roll-up spindle transmission connection, the fixing shell are fixed in the installation pedestal, and the ratchet wheel is fixed in outside the fixation Shell center is rotatably connected to two or more than two symmetrical inertia pawl, the inertia on the linkage shell Pawl one end is to engage cooperation with the ratchet wheel, and the inertia pawl other end is connected to the linkage shell by spring On internal chamber wall, the inertia pawl is towards convex globoidal is provided on the end face of the ratchet wheel, described in the roll-up spindle drives When the shell rotation that links is too fast, the inertia pawl, which shifts, engages the ratchet wheel；

Passive self-locking group of the linkage shell is sequentially connected by the buffer coupling and the roll-up spindle, and the buffering connects Connecing device includes buffer shell, rotating base, star buffer stopper, and the buffer shell is fixed in the installation pedestal, institute The transmission connection of star buffer stopper is stated in the roll-up spindle, the rotating base is rotatably connected in the roll-up spindle, and described turn Dynamic pedestal is fixed together with the linkage shell, and the rotating base has the cavity for accommodating the star buffer stopper, described There are several convex blocks, the star buffer stopper is set between several convex blocks, the roll-up spindle in the cavity of rotating base It drives the star buffer stopper rotation to squeeze the convex block, and then pushes the rotating base and linkage shell rotation.

2. the self-locking coiler of safety and comfort according to claim 1, which is characterized in that further include being connected to the retracting Active tightening group on axis, the active tightening group include gas generator, actively tighten rack gear, actively tighten gear, active Assembly housing is tightened, the assembly housing of actively tightening has cylindrical end, and the gas generator rotation riveting is mounted on the circle Cylindricality end, it is described actively tighten rack gear be slidably mounted on it is described actively tighten in assembly housing, it is described actively tighten rack gear engagement Described actively to tighten gear, the gear of actively tightening is sequentially connected with the roll-up spindle, described actively to tighten assembly housing, active Tightening group rack gear bottom surface, gas generator top surface three constitute a closed cavity, collision gas generator production when occurring Raw high pressure gas simultaneously discharges into the closed cavity from the gas generator top surface, and then pushes and described actively tighten rack gear It slides and the gear of actively tightening is driven to rotate, and then make the roll-up spindle rotation tightening safety belt.

3. the self-locking coiler of safety and comfort according to claim 2, which is characterized in that the gear of actively tightening passes through Urgent connector is attached with the roll-up spindle, and the urgent connector can just connect the volume when active tightening group acts on Axis is received, the urgent connector includes being connected to the rotating wheel actively tightened on gear, sliding fixture block, cover board, and described turn There is the cavity of one, the integrated cavity is composed of circular cavity and triangular cavity, the triangle in driving wheel Cavity is distributed on the outside of the circular cavity, and cavity is stated in the cover plate lid residence, and the roll-up spindle passes through the cover board and described It circular cavity and is not contacted with the rotating wheel, is provided with cunning in the triangular cavity between the rotating wheel and the roll-up spindle Fixture block is moved, the jack that bolt is inserted on the sliding fixture block is stretched out on the cover board, so that the sliding fixture block position be made to fix And it is not contacted with the roll-up spindle.