CN101092128A - Webbing retracting device - Google Patents
Webbing retracting device Download PDFInfo
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- CN101092128A CN101092128A CN 200710112510 CN200710112510A CN101092128A CN 101092128 A CN101092128 A CN 101092128A CN 200710112510 CN200710112510 CN 200710112510 CN 200710112510 A CN200710112510 A CN 200710112510A CN 101092128 A CN101092128 A CN 101092128A
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Abstract
A webbing retracting device that may prevent entering of an end-lock state when a spool rotates in the pull out direction on rebound just after completion of taking up of the webbing belt. A restriction weight is provided on a V gear. The restriction weight moves in the pull out direction relative to the V gear by acceleration when the V gear is rotated in the take up direction, and furthermore, the restriction weight pivots about a support pin under centrifugal force due to rotation of the V gear and attains a contact position. In such a state, even if the inertial mass attempts to displace toward the lock activation direction, the restriction weight interferes with the inertial mass and restricts displacement of the inertial mass toward the lock activation direction.
Description
Technical field
The present invention relates to a kind of Webbing retracting device, this Webbing retracting device is used for rolling and storing the belt strap (webbing belt) that is used for retraining the automotive occupant health that is sitting in the seat.
Background technology
In the Webbing retracting device that constitutes seat belt device for vehicle, be provided with lockout mechanism, this lockout mechanism is used for limiting spool and rotates along pull-out direction when vehicle slows down suddenly, for example described in the flat 05-193441 communique of Japanese Patent Application Laid-Open (patent documentation 1).The lock gear that constitutes the lockout mechanism described in the patent documentation 1 can be rotated coaxially with respect to spool, and when spool with respect to lock gear when pull-out direction rotates, with this relatively rotates interlock be, the respective teeth of main ratchet and standby ratchet and the internal gearing that is formed on the two side of framework, thus limited the rotation of spool along pull-out direction.Two types the structure that produces relative rotation between spool and lock gear of being used for is arranged, and wherein a kind of structure is the deceleration detecting device.This deceleration detecting device is provided with coasting body, this coasting body leans on inertia motion when vehicle slows down suddenly, and engaging claw that is upwards pushed away by the coasting body of inertia motion and the outer indented joint on the lock gear, thereby the rotation of restriction lock gear, and lock gear is rotated with respect to the spool that just rotates along pull-out direction.
Another structure that is used for producing relative rotation between spool and lock gear is arranged on another coasting body that the coasting body with the deceleration detecting device on the lock gear separates.This coasting body is connected to lock gear by spring, but when spool with lock gear suddenly when pull-out direction rotates, this coasting body has occurred lag in turn owing to the biasing force of antagonistic spring with respect to lock gear.Coasting body radially outward moves along the rotation of lock gear owing to this lag in turn is accompanied by with respect to the rotation of lock gear, and with the inboard that is formed on lid on handle ratchet wheel tooth engagement, thereby the rotation of coasting body stops, and thereby the rotation of lock gear stop.By this way, stop by the rotation that makes lock gear, lock gear is rotated with respect to the spool that just rotates along pull-out direction.
But, and then roll after belt strap finishes by spool, if lockout mechanism is accidentally actuated, then spool can not rotate along pull-out direction from this state, thereby enters so-called " end lock-out state (end-lock state) ".At this end lock-out state, owing to spool can not rotate along pull-out direction, so pulling out of belt strap becomes difficult.Therefore, in above-mentioned patent documentation 1, when finishing the rolling of belt strap, be configured such that the external tooth of lock gear and the engaging claw of deceleration detecting device can not mesh together, thereby prevent the end lock-out state.
Summary of the invention
In view of the foregoing, the invention provides a kind of Webbing retracting device, this Webbing retracting device can prevent rolling of belt strap and then stop after spool because resilience (counteraction) and the end lock-out state when pull-out direction rotates, occurs.
A first aspect of the present invention is a kind of Webbing retracting device, and this Webbing retracting device comprises: spool, and this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap; Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool; Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by its actuating; Rotational testing component, this rotational testing component are arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, move to activate described Lock Part towards predetermined locking direction of actuation; And limiting unit, this limiting unit is arranged on described rotor place, and limits described rotational testing component because the resilience that described belt strap stops to cause to rolling of described spool and moving towards described locking direction of actuation.
According to Webbing retracting device based on first aspect present invention, when spool when the roll up direction side is rotated, roll belt strap and it be stored on the spool from vertical base end side of belt strap.When thereby rolling of the belt strap that is undertaken by spool stops spool and stops suddenly, owing to the resilience of spool makes the rotor with its rotation rotate along pull-out direction is a small amount of suddenly sometimes.Webbing retracting device of the present invention links with the unexpected rotation of described rotor along pull-out direction basically, described rotational testing component moves along described locking direction of actuation, and described for this reason Lock Part locks described spool and limits the rotation of spool along pull-out direction.
But, in Webbing retracting device of the present invention, when described rotor since described spool when stopping to roll described belt strap resilience and when pull-out direction rotates suddenly, this moment is by limiting unit restriction rotational testing component moving towards the locking direction of actuation, in this case, Lock Part does not limit the rotation (so-called " end lock-out state " can not occur) of spool along pull-out direction.Therefore, can easily pull out belt strap once more.
A second aspect of the present invention is the Webbing retracting device according to first aspect present invention, this Webbing retracting device also comprises and prevents parts, under the state that described rotor rotates along described pull-out direction, this prevents that parts from preventing that described limiting unit from limiting towards the mobile of described locking direction of actuation described rotational testing component, and above-mentioned state and described rotor are because the rolling the resilience that stops to cause of described belt strap and the state that rotates along described pull-out direction is different.
According to Webbing retracting device based on second aspect present invention, when described rotor is in the following time of state (this state is not the state when rolling of belt strap stops) of rotating along pull-out direction, prevent that by the described parts that prevent described limiting unit from limiting towards the mobile of described locking direction of actuation described rotational testing component.For this reason, when car retardation,, inertia roughly moves to the direction of vehicle front owing to making occupant's health edge, when thereby occupant's health spurs belt strap suddenly, this moment, described rotor rotated along pull-out direction suddenly with described spool, described rotational testing component can move along described locking direction of actuation, thereby can limit the rotation of spool along pull-out direction by the actuating of Lock Part.
A third aspect of the present invention is according to the present invention first or the Webbing retracting device of second aspect, wherein: described limiting unit is arranged to and can be moved between contact position and non-contacting position, at described contact position, described limiting unit contacts and can limit described rotational testing component to the moving of described locking direction of actuation with described rotational testing component, described non-contacting position separates with described contact position and allows described rotational testing component to move towards described locking direction of actuation; And described limiting unit by described rotor along the rotation of described roll up direction and move to described contact position.
According to Webbing retracting device based on third aspect present invention, described limiting unit by described rotor along the rotation of roll up direction and separate from non-contacting position.In this case, described limiting unit can move to contact position.Under the state after the rotation of roll up direction stops of spool and then, described limiting unit is positioned at contact position.From this state, if rotational testing component is attempted to move towards the locking direction of actuation owing to rotor rotates suddenly on a small quantity along pull-out direction, then described limiting unit contacts and limits moving of this rotational testing component with described rotational testing component.
Here, as mentioned above, because described limiting unit is configured to separate from non-contacting position along the rotation of roll up direction by described rotor, therefore (that is to say basically, if not at described rotor since described spool when stopping to roll belt strap resilience and the situation of rotating along pull-out direction), if described rotor rotates along pull-out direction, then described limiting unit can not separate from non-contacting position, and therefore described limiting unit can not arrive contact position.Therefore, when described spool in normal running when pull-out direction rotates and when described spool because vehicle slows down suddenly along pull-out direction rotate and described rotor when pull-out direction rotates, described limiting unit can not move to contact position, thereby described limiting unit can be not unexpectedly and the mobile interference of described rotational testing component.
A fourth aspect of the present invention is the Webbing retracting device according to third aspect present invention, and wherein, the described limiting unit that is in described non-contacting position moves to described contact position by the centnifugal force of the rotation generation of described rotor.
According to Webbing retracting device based on fourth aspect present invention, the described limiting unit that is in non-contacting position and separates along the acceleration of roll up direction and from non-contacting position by described rotor afterwards is because the centnifugal force that produces because of the rotation of rotor moves towards contact position.Described rotation detecting unit and then spool stop to rotate by described rotor when a spot of unexpected rotation of pull-out direction is attempted to move along the locking direction of actuation along roll up direction, be in the state of arrival contact position and the limiting unit of motion by this way and contacted, and the restriction rotational testing component is mobile with rotational testing component.
A fifth aspect of the present invention is the Webbing retracting device according to the third aspect or fourth aspect, and wherein, the described limiting unit that is in described non-contacting position moves to described contact position by the friction force of the rotation generation of described rotor.
According to the Webbing retracting device based on fifth aspect present invention, the described limiting unit that is in described non-contacting position moves to described contact position by the friction force of the rotation generation of described rotor.Stop after described roll up direction is rotated attempting when described locking direction of actuation moves along a spot of unexpected rotation of pull-out direction at the and then described spool of described rotational testing component by described rotor, be in the state of arrival contact position and the described limiting unit of motion by this way and contacted, and limited moving of described rotational testing component with described rotational testing component.
A sixth aspect of the present invention is that this Webbing retracting device also comprises force application part according to the Webbing retracting device of either side in the 3rd to the 5th aspect, this force application part from described contact position towards described non-contacting position to the described limiting unit application of force.
According to Webbing retracting device based on sixth aspect present invention, by described force application part along from described contact position towards the direction of described non-contacting position to the described limiting unit application of force.For this reason, after the moving of locking direction of actuation, the limiting unit that has arrived contact position turns back to non-contacting position by the power that applies of force application part at the described rotational testing component of restriction.
A seventh aspect of the present invention is the Webbing retracting device according to sixth aspect present invention, wherein, described force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.
According to Webbing retracting device based on seventh aspect present invention, by described force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.For this reason, when rotor at a predetermined velocity or bigger speed when the rotation of pull-out direction stops, the rotational testing component that moves along the locking direction of actuation moves along the direction opposite with described locking direction of actuation by the power that applies of force application part, thereby returns virgin state.Therefore, removed the restriction of spool being rotated by Lock Part.
Here, in Webbing retracting device according to the present invention, described force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force, but also along from contact position towards the direction of non-contacting position to the limiting unit application of force, therefore by single member realization to the application of force of rotational testing component with to the application of force of limiting unit, thereby can reduce the quantity of member.
A eighth aspect of the present invention is the Webbing retracting device according to either side in first aspect to the seven aspects, this Webbing retracting device also comprises additional force application part, this force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.
According to Webbing retracting device based on eighth aspect present invention, described additional force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.Therefore, can be along the direction opposite to the described rotational testing component application of force suitably with described locking direction of actuation.
A ninth aspect of the present invention is the Webbing retracting device according to either side in first aspect to the eight aspect, wherein, described limiting unit comprises: movable parts, and this movable parts is by the resilience campaign of described belt strap when rolling of described spool stops; Limiting part, this limiting part be by the motion campaign of described movable parts, and limit the rotation of described rotational testing component towards described locking direction of actuation.
According to Webbing retracting device based on ninth aspect present invention, described limiting unit comprises movable parts and limiting part, and by described movable parts because the resilience campaign of described belt strap when rolling of described spool stops, and make described limiting part motion, thereby limited described rotational testing component moving towards the locking direction of actuation.Therefore, can suitably activate limiting unit.
A tenth aspect of the present invention is the Webbing retracting device according to either side in first aspect to the eight aspect, wherein, described limiting unit comprises: the friction force production part, and this friction force production part is owing to the rotation of described rotor produces friction force and motion; And movement limiting portion spare, this movement limiting portion spare is by the motion campaign of described friction force production part, and limits described rotational testing component moving towards described locking direction of actuation.
According to Webbing retracting device based on tenth aspect present invention, described limiting unit comprises friction force production part and movement limiting portion spare, and this friction force production part is owing to the rotation of described rotor produces friction force and motion, make described movement limiting portion spare motion thus, and limited described rotational testing component and moved to described locking direction of actuation.Therefore, can suitably activate described limiting unit.
A eleventh aspect of the present invention is a kind of Webbing retracting device, and this Webbing retracting device comprises: spool, and this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap; Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool; Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by the actuating of itself; Rotational testing component, this rotational testing component are arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, move to activate described Lock Part towards predetermined locking direction of actuation; And limiting unit, this limiting unit is arranged on described rotor place, and limit described rotational testing component because the resilience that described belt strap stops to cause to rolling of described spool and moving towards described locking direction of actuation, wherein, described limiting unit activated by its inertia and the centnifugal force that produced by the rotation of described rotor.
A twelveth aspect of the present invention is a kind of Webbing retracting device, and this Webbing retracting device comprises: spool, and this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap; Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool; Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by its actuating; Rotational testing component, this rotational testing component are arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, move to activate described Lock Part towards predetermined locking direction of actuation; And limiting unit, this limiting unit is arranged on described rotor place, and limit described rotational testing component since described belt strap to rolling of described spool stop to cause resilience and moving towards described locking direction of actuation, wherein, described limiting unit activated by the friction force that the rotation by described rotor produces.
As mentioned above, can prevent so-called end lock-out state extremely effectively according to Webbing retracting device of the present invention, even and then stop to roll after the belt strap, it also is as follows that spool rotates along pull-out direction owing to its resilience.
Description of drawings
To describe exemplary embodiment of the present invention in detail based on accompanying drawing below, in the accompanying drawings:
Fig. 1 shows the exploded perspective view of the structure of the Webbing retracting device of first exemplary embodiment according to the present invention;
Fig. 2 shows the exploded perspective view of the structure of the relevant portion of the Webbing retracting device of first exemplary embodiment according to the present invention;
Fig. 3 is rotor, rotational testing component, limiting unit in the Webbing retracting device of first exemplary embodiment according to the present invention and the front elevation that prevents parts;
Fig. 4 is the front elevation corresponding to Fig. 3, shows in the Webbing retracting device of first exemplary embodiment according to the present invention the state that rotational testing component moves along the locking direction of actuation;
Fig. 5 is the front elevation corresponding to Fig. 3, shows in the Webbing retracting device of first exemplary embodiment according to the present invention, and rotational testing component is along the mobile state that is restricted the restriction of unit of locking direction of actuation;
Fig. 6 shows the exploded perspective view of the structure of the relevant portion of the Webbing retracting device of second exemplary embodiment according to the present invention;
Fig. 7 is rotor, rotational testing component, limiting unit in the Webbing retracting device of second exemplary embodiment according to the present invention and the front elevation that prevents parts;
Fig. 8 is the front elevation corresponding to Fig. 7, shows in the Webbing retracting device of second exemplary embodiment according to the present invention the state that rotational testing component moves along the locking direction of actuation;
Fig. 9 is the front elevation corresponding to Fig. 7, shows in the Webbing retracting device of second exemplary embodiment according to the present invention, and rotational testing component is along the mobile state that is restricted the restriction of unit of locking direction of actuation;
Figure 10 shows the exploded perspective view of the structure of the relevant portion of the Webbing retracting device of the 3rd exemplary embodiment according to the present invention;
Figure 11 is the front elevation of rotor, rotational testing component and limiting unit in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention;
Figure 12 is the front elevation corresponding to Figure 11, shows in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention the state that rotational testing component moves along the locking direction of actuation;
Figure 13 is the front elevation corresponding to Figure 11, shows in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention, and rotational testing component is along the mobile state that is restricted the restriction of unit of locking direction of actuation;
Figure 14 A shows the cutaway view of rotor, rotational testing component and limiting unit in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention, and Figure 14 B shows the lateral plan of the limiting unit in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention;
Figure 15 is the friction spring in the Webbing retracting device of the 3rd exemplary embodiment according to the present invention and the exploded perspective view of lid;
Figure 16 shows the exploded perspective view of the structure of the relevant portion of the Webbing retracting device of the 4th exemplary embodiment according to the present invention;
Figure 17 is the front elevation of rotor, rotational testing component and limiting unit in the Webbing retracting device of the 4th exemplary embodiment according to the present invention;
Figure 18 is the front elevation corresponding to Figure 17, shows in the Webbing retracting device of the 4th exemplary embodiment according to the present invention the state that rotational testing component moves along the locking direction of actuation;
Figure 19 is the front elevation corresponding to Figure 17, shows in the Webbing retracting device of the 4th exemplary embodiment according to the present invention, and rotational testing component is along the mobile state that is restricted the restriction of unit of locking direction of actuation;
Figure 20 shows the cutaway view of rotor, rotational testing component and limiting unit in the Webbing retracting device of the 4th exemplary embodiment according to the present invention; And
Figure 21 shows the cutaway view of rotor, rotational testing component and limiting unit in the Webbing retracting device of the 4th exemplary embodiment according to the present invention.
The specific embodiment
[first exemplary embodiment]
The structure of＜the first exemplary embodiment 〉
In Fig. 2, the integral body that illustrates the Webbing retracting device of first exemplary embodiment according to the present invention by exploded perspective is summarized structure.
As shown in the drawing, Webbing retracting device 10 is provided with framework 12.Framework 12 for example is provided with tabular backboard 14, and the thickness direction of this backboard 14 is roughly along the left and right directions of vehicle.This Webbing retracting device 10 is for for example being fixed to backboard 14 structure that is installed near the central post lower end the car body on the car body by using such as fasteners such as bolts.Leg plate (leg plate) 16 is roughly crooked and form along the inboard broad ways (being roughly the left and right directions of vehicle) of a Width side direction vehicle of vehicle fore-and-aft direction from backboard 14.In addition, leg plate 18 is crooked and form along the direction identical with forming leg plate 16 in another Width side of backboard 14.
Between leg plate 16 and leg plate 18, be provided with spool 20.This spool 20 forms roughly cylindrical form, and axially along leg plate 16 and leg plate 18 direction toward each other.In spool 20, be formed with and insert through hole 22.The two ends of inserting through hole 22 are at the peripheral part office of spool 20 opening, and opening be shaped as length direction in the shape of slit of spool 20 on axially.Insert the through hole 24 that through hole 22 forms the axial component of avoiding passing spool 20, and the base end side on the length direction of long ribbon shape belt strap 26 pushed away from one of them open end that inserts through hole 22.
Base end part office on the length direction of belt strap 26 is formed with cylindrical portion 28, and have along the through hole of belt strap 26 Widths, thereby, by anti-detachment axle 30 being set inserting the inside of passing the cylindrical portion 28 of inserting through hole 22, the base end side that prevents belt strap 26 when belt strap 26 is pulled to the distal side is drawn out and inserts through hole 22.Prevented that by this way the belt strap 26 that breaks away from is rolled-up by reeling along roll up direction rotating scroll 20 and from the cardinal extremity stratification ground of this belt strap 26 from insert through hole 22, thereby be stored on the outer peripheral portion of spool 20, described roll up direction is a direction in the rotational direction of spool 20.
In through hole 24 disposed inboard the axial shaft-like torsion shaft 32 of length direction along spool 20 arranged.Torsion shaft 32 links to each other with spool 20 under leg plate 18 gussets sway the state that the pivot of direction is prevented from spool 20 inboards at this torsion shaft 32.In addition, torsion shaft 32 passes leg plate 18 in the end of leg plate 18 sides and is projected into the outside of framework 12.
Be provided with pretensioner 42 in the outside of leg plate 16.Pretensioner 42 is provided with cylinder 44.Gas generator 46 is installed in the bottom side place of cylinder 44, and is in unexpected deceleration regime following time when unshowned acceleration pick-up detects vehicle, is arranged on gas generator 46 gas inside propellants and is lighted.Like this, gas generant also produces gas simultaneously in very short time internal combustion.The gas that produces like this is fed in the cylinder 44, thereby the interior pressure of cylinder 44 is raise rapidly.Because the interior pressure of cylinder 44 raises rapidly, the piston 48 that is contained in the cylinder 44 slides in cylinder 44.48 places are formed with tooth bar 50 at piston, and this tooth bar 50 is accompanied by piston 48 and slides along with the motion of the rising of pressing in the cylinder 44.
And, near the open side of leg plate 16 sides of cylinder 44, be provided with gear case 52, thereby and on the opposition side of cylinder 44, be provided with cover plate 54 and can cover the tooth bar 50 that stretches out from cylinder 44, and cylinder 44 is remained on by the state of screw retention to leg plate 16.In addition, between cover plate 54 and gear case 52, be provided with miniature gears 56.Structure is for like this, that is: miniature gears 56 meshes with the rack tooth of the distal side of tooth bar 50, and miniature gears 56 also rotationally axle bearing pass on the other end of leg plate 16 and gear case 52 at torsion shaft 32, thereby when tooth bar 50 upward movements, miniature gears 56 rotates along roll up direction.
And the end of leg plate 16 sides of miniature gears 56 is provided with power-transfer clutch 58.Therefore axle bearing is at torsion shaft 32 places rotationally for this power-transfer clutch 58, even when torsion shaft 32 rotates, this power-transfer clutch 58 can not rotate yet.But power-transfer clutch 58 engages with miniature gears 56, thus when miniature gears 56 when roll up direction is rotated, the part of power-transfer clutch 58 deforms, thereby links to each other with torsion shaft 32.
Also have, be provided with lockout mechanism 60 in leg plate 16 sides.Lockout mechanism 60 is provided with sensor frame 62.This sensor frame 62 forms partly the spill towards leg plate 16 side openings, and sensor frame 62 is fixed on the leg plate 16.In addition, the part of cover plate 54 is positioned at the inboard towards this part of leg plate 16 side openings.A side relative with leg plate 16 sides of sensor frame 62 is provided with sender unit cap 64.Sender unit cap 64 its outer peripheral portions are provided with fixed jaw etc., and the desired location of these fixed jaws and sensor frame 62 is assembled together, so that sender unit cap 64 is mechanically connected on the sensor frame 62.
On sender unit cap 64, be formed with the receiving portions that is coupling of unshowned tubular, this receiving portions part at the place, the other end of the process sensor frame 62 of axle bearing torsion shaft 32 rotationally that is coupling.Between sensor frame 62 and sender unit cap 64, be provided with V-gear 66 as rotor.V-gear 66 is formed with shallow bottomless drum shape (or dish) opening that the facing sensing device covers 64 sides, and is formed with hook tooth in the peripheral part office of V-gear 66.Torsion shaft 32 passes V-gear 66, and V-gear 66 is installed on the torsion shaft 32, thus can with torsion shaft 32 integratedly around same rotational.
Here, the V-gear 66 of Fig. 2 and the structure between the sender unit cap 64 have been shown among Fig. 1.As shown in Figure 1, be provided with turning feeler mechanism 68 in the inboard of V-gear 66.Turning feeler mechanism 68 is provided with gear ring 70.Gear ring 70 is provided with lower wall 72 rounded when the place ahead is seen.Be formed with circular port 74 with one heart at lower wall 72 places and its outer peripheral portion.The axial component 76 that is formed on V-gear 66 places passes circular port 74, and gear ring 70 rotationally axle bearing at these axial component 76 places.In addition, Ring gear part 78 perimembranous office within it is formed with the handle ratchet wheel tooth, and this Ring gear part 78 is coaxial and form at the surface of leg plate 16 sides of lower wall 72 and lower wall 72.
Be provided with W shape pawl 80 in the inboard of gear ring 70, so that corresponding with the hook tooth of gear parts 78.W shape pawl 80 is by pin 82 axle bearings, so that this W shape pawl 80 can be around the axis swing that is parallel to torsion shaft 32, this pin 82 is formed on the V-gear 66 in the position with respect to the desaxe of torsion shaft 32.This structure is such, that is: W shape pawl 80 contacts by its hunting motion or away from the interior circumferential portion of gear parts 78, and end motion by making W shape pawl 80 is with near the interior circumferential portion near gear parts 78, the hook tooth engagement on W shape pawl 80 and the interior circumferential portion that is formed on gear ring 70.In this engagement, if V-gear 66 rotates along pull-out direction, then V-gear 66 passes to gear ring 70 along the turning effort of pull-out direction by W shape pawl 80, thereby gear ring 70 is rotated along pull-out direction.
And, be provided with inertial mass body (mass) 84 as rotational testing component at the side place radially along gear ring 70 of W shape pawl 80.Inertial mass body 84 is supported by a pair of retaining part 86 that is formed on the V-gear 66, thereby inertial mass body 84 is circumferentially swinging in preset range along V-gear 66 basically, and structure is for like this, that is: push W shape pawl 80 along the inertial mass body 84 of locking direction of actuation (as V-gear 66 one of circumferential) swing, make 80 swings of W shape pawl, thereby the W shape pawl 80 and the interior circumferential portion of gear parts 78 are meshed.
In addition, an end of retracing spring 88 anchors on the inertial mass body 84.Retracing spring 88 is provided with and forms eiloid fixed part 90.Fixed part 90 anchors on the set pin 92 that is formed at V-gear 66.Retracing spring 88 is coil springs, one is distolateral suitably crooked, and along swaying direction (promptly locking direction of actuation) to inertial mass body 84 application of forces, this swaying direction is the opposite direction of swaying direction with inertial mass body 84 when pushing W shape pawl 80 and make W shape pawl 80 swing.
In addition, be provided with restriction weight 94 at the opposition side with W shape pawl 80 of inertial mass body 84 as limiting unit.The position that restriction weight 94 is arranged to make its center of gravity from the axle center (center of turn) of spool 20 along rotating skew radially outward (perhaps in other words, the axle center away from spool 20 is arranged to as much as possible in the position that preferably will limit the center of gravity of weight 94).Heavily be formed with elongated hole 96 at restriction weight 94.The cylindrical support pin 98 that is formed on the V-gear 66 is charged in this elongated hole 96.The width dimension of elongated hole 96 is bigger slightly than the external diameter of supporting pin 98, therefore limiting weight 94 can rotate around supporting pin 98, and restriction weight 94 can also be along V-gear 66 radially slide the position when supporting pin 98 contacts with the end of the length direction of elongated hole 96.
On restriction weight 94, also be formed with mating surfaces (abutment surface) 100.On V-gear 66, be formed with as the bond pad 102 that prevents parts, with corresponding with mating surfaces 100.The part of the periphery of bond pad 102 is composition surfaces 104, and when above-mentioned supporting pin 98 is in the state of an end of the length direction that is positioned at elongated hole 96, be in around the restriction weight 94 of the particular point of rotation of supporting pin 98 and be positioned at non-contacting position, and mating surfaces 100 contacts with composition surface 104 with respect to inertial mass body 84.Under this contact condition of mating surfaces 100 and composition surface 104,94 the rotations of restriction weight have been prevented along one of them direction that centers on supporting pin 98.
But, if restriction weight 94 slides and is positioned at the position of the other end longitudinally of elongated hole 96 up to supporting pin 98, then eliminated the relative status of mating surfaces 100 with composition surface 104, thereby restriction weight 94 can be along rotate the position that has arrived contact position up to restriction weight 94 around a direction of supporting pin 98, at this contact position, mating surfaces 100 is positioned near the composition surface that is formed on the bond pad 102 106 and is positioned at from composition surface 104 along V-gear 66 radial outside.
On restriction weight 94, also be formed with interference portion 108.When restriction weight 94 had arrived above-mentioned contact position, interference portion 108 can contact with the contact portion 110 on restriction weight 94 sides that are formed on inertial mass body 84.At this state, if inertial mass body 84 attempt along locking direction of actuation swing, then interference portion 108 contact with contact portion 110 and with its interference, thereby restriction inertial mass body 84 edges lock the swings of direction of actuation.In addition, the end anchorage at fixed part 90 and above-mentioned end opposition side of retracing spring 88 is limiting weight 94 places, apply power around supporting pin 98 to restriction weight 94, and the position of a vertical end that is positioned at elongated hole 96 towards supporting pin 98 is to restriction weight 94 application of forces towards opposite side.
And, the friction ring 118 of general toroidal is installed on the outer peripheral portion of gear ring 70.Friction ring 118 is formed with the internal diameter size bigger than the outside dimension of gear ring 70.What center on friction ring 118 circumferentially is formed with one or more (being three in this exemplary embodiment) engaging claw 120 with predetermined space.Lower wall 72 is formed with annular engaging groove 122, and described annular engaging groove 122 and these engaging claws 120 are corresponding and to form at least one the presumptive area place along the outer peripheral portion of lower wall 72 be continuous.Engaging claw 120 is assemblied in the annular engaging groove 122, thereby relatively rotates coaxially with respect to gear ring 70 in the boundary of the annular engaging groove 122 that engaging claw 120 and friction ring 118 can form at the outer peripheral portion along lower wall 72.
Under the state on the outer peripheral portion of the lower wall 72 that friction ring 118 is installed in gear ring 70, between the interior circumferential portion of the outer peripheral portion of gear ring 70 and friction ring 118, be formed with the space, this space provides the interval of the thickness that is equal to or greater than friction spring 112, and the main body 114 of friction spring 112 is contained in this space.
In the main body 126 of sensor gear 124, be formed with window portion 130.Window portion 130 along spool 20 axially and radially pass at the part place of main body 126.Be provided with spring perch 132 in the inboard of window portion 130.Spring perch 132 is wholely set with sensor gear 124 under the state of V-gear 66 sides of more shifting to sensor gear 124 than the end face on sender unit cap 64 sides of main body 126.Columniform boss 134 forms from spring perch 132 and stretches out towards sender unit cap 64, and the winding part of coil spring 136 is assemblied on the boss 134.One end of coil spring 136 anchors on the anchorage part 138 that is arranged at spring perch 132.
What compare is that the other end of coil spring 136 is along extending towards the direction of spring perch 132 sides.The circumferential part in the edge of the main body of above-mentioned friction ring 118 is cut, with corresponding with the described other end of coil spring 136.Be provided with holding portion 140 at this cut-out place.Holding portion 140 is provided with a pair of sidewall of circumferentially facing each other 142,144 along friction ring 118.These sidewalls 142,144, thereby are formed with towards the concavity part of the radial outside opening of friction ring 118 along radially the linking together in their inboard of friction ring 118 by perisporium 146.The other end on the V-gear 66 of perisporium 146 and the pressing part 116 of coil spring 136 are charged in the holding portion 140.
Double pointed nail 154 stretches out from the surface in sender unit cap 64 sides of interlocking pawl 152.Pressing part 156 is radially protruding and corresponding with double pointed nail 154 from the outer peripheral portion of above-mentioned friction ring 118.Pressing part 156 in its center longitudinally towards V-gear 66 lateral bending songs.Pressing part 156 with respect to the distal side of the sweep of the longitudinal middle part of pressing part 156 along the rotation circumferential surface of gear ring 70 to double pointed nail 154, and when friction ring 118 rotates and pressing part 156 when engaging with double pointed nail 154 along pull-out direction, pressing part 156 upwards promotes interlocking pawl 152 by double pointed nail 154, thereby makes interlocking pawl 152 and V-gear 66 engagements.
In addition, as shown in Figure 2, below interlocking pawl 152, be provided with acceleration pick-up 158.Corresponding with this acceleration pick-up 158, on sensor frame 62, be formed with the holding portion 160 of hull shape accordingly with acceleration pick-up 158, holding portion 160 is to sender unit cap 64 side openings, and at least a portion of acceleration pick-up 158 is contained in the holding portion 160.Acceleration pick-up 158 is provided with base portion 162.Base portion 162 forms tabular on the whole, and its thickness direction vertically.Be formed with curved surface on the end face of base portion 162, this curved surface is towards open top, and is provided with the hard ball (hard ball) 164 as coasting body at the top of this curved surface.Sensor pawl 166 is arranged on the top of hard ball 164.
Axle bearing is in the upper edge from the upwardly extending vertical wall 168 of a part of the periphery of base portion 162 pivotally for sensor pawl 166, and sensor pawl 166 is pushed upwardly by the hard ball 164 that rolls on the curved surface of base portion 162.By sensor pawl 166 is upwards promoted by hard ball 164, sensor pawl 166 contacts with interlocking pawl 152 shown in Figure 1 and makes interlocking pawl 152 pivots, thereby upwards promotes this interlocking pawl 152.Be provided with above-mentioned V-gear 66 by the pivot side that engages the interlocking pawl 152 that pivots with sensor pawl 166, thereby interlocking pawl 152 and V-gear 66 engagements.
As shown in Figure 2, lockout mechanism 60 is provided with the lock pawl 170 as Lock Part.This lock pawl 170 is provided with a pair of axle 172.Axle 172 axially be direction (identical direction) with the axially parallel of spool 20, and one of them is 172 pivotally in the batter that is coupling (omitting among the figure) of axle bearing in being formed at leg plate 18, and another is 172 pivotally in the batter 174 that is coupling of axle bearing in being formed at gear case 52.Be formed with claw portion 176 on an axle 172 therein.
In above-mentioned lock pawl 170, pivot the hook tooth engagement of the hook tooth of claw portion 176 and ratchet portions 182 along roll up direction by making axle 172.Under claw portion 176 and ratchet portions 182 ingear states, limited the rotation of ratchet portions 182, thereby limited of the rotation of locking pedestal 178 along pull-out direction along pull-out direction.This structure makes the pressing part 148 of sensor gear shown in Figure 1 124 corresponding with claw portion 176, thereby when the main body 126 of sensor gear 124 when pull-out direction rotates, pressing part 148 is pushed claw portion 176, thereby lock pawl 170 is pivoted along roll up direction.
The operation of＜the first exemplary embodiment and effect 〉
The operation and the effect of this Webbing retracting device 10 will be described below.
In this Webbing retracting device 10, under belt strap 26 rolled-up states on spool 20, when the power that applies of opposing coil spring 36 was moved belt strap 26 to distal side, along with belt strap 26 is pulled out gradually, spool 20 rotated along pull-out direction.
Like this, the belt strap 26 of pulling out is placed around occupant's health, thereby for example remain in the buckle device that is arranged at vehicle seat side by the hyoplastron that will be arranged on the center on belt strap 26 length directions, realize tightening state, in this tightening state, occupant's health is put on belt strap 26, and occupant's health is retrained by belt strap 26.Under fastened this state of belt strap 26, when vehicle was in the state of rapid deceleration, therefore hard ball 164 rolled, thereby sensor pawl 166 is upwards promoted by hard ball 164.Engaged with the interlocking pawl 152 of sensor gear 124 by the sensor pawl 166 that so upwards promotes, thereby upwards promote interlocking pawl 152.In this case, interlocking pawl 152 and V-gear 66 engagements.
When occupant's health because the inertia during car retardation and along roughly when the direction of vehicle front is moved, belt strap 26 is spurred suddenly by occupant's health.Like this, by the belt strap 26 that is spurred suddenly, turning effort just puts on spool 20 suddenly along pull-out direction.In principle, by the spool 20 that rotates along pull-out direction make torsion shaft 32 and thereby V-gear 66 is rotated along pull-out direction, and W shape pawl 80 and inertial mass body 84 rotate along pull-out direction with V-gear 66.
But, when spool 20 like that unexpected as mentioned above when pull-out direction rotates, inertial mass body 84 does not attempt to keep its position owing to inertia does not rotate, and in this case, inertial mass body 84 is resisted the applying power of retracing spring 88 and relatively swung with respect to V-gear 66.When inertial mass body 84 from state shown in Figure 3 during with respect to V-gear 66 swing, inertial mass body 84 is pushed W shape pawl 80 and is made 80 swings of W shape pawl, in this case as shown in Figure 4, one end motion of W shape pawl 80 near the interior circumferential portion of gear ring 70, and with the interior circumferential portion that is formed on gear ring 70 on the hook tooth engagement.
By making W shape pawl 80 and gear ring 70 engagements, the turning effort of spool 20 is delivered to gear ring 70 by torsion shaft 32, V-gear 66 and W shape pawl 80, thereby gear ring 70 is rotated along pull-out direction with V-gear 66.By gear ring 70 is rotated along pull-out direction, the power of being applied in is pushed and is rotated along pull-out direction with gear ring 70 against the friction spring 112 of gear ring 70 outer peripheral portions.
In this case, when friction spring 112 when pull-out direction rotates predetermined rotational angular, pressing part 116 is pushed sidewall 142 and friction ring 118 is rotated along pull-out direction.By friction ring 118 is rotated along pull-out direction, the pressing part 156 of friction ring 118 is pushed double pointed nail 154 near near the double pointed nail 154, and upwards promotes interlocking pawl 152.In this case, interlocking pawl 152 and V-gear 66 engagements.
When interlocking pawl 152 during with V-gear 66 engagements, as mentioned above, spool 20 is delivered to sensor gear 124 along the turning effort of pull-out direction by torsion shaft 32, V-gear 66 and interlocking pawl 152, sensor gear 124 thereby rotate along pull-out direction.
When the power that applies of sensor gear 124 opposing retracing springs 88 and when pull-out direction turned an angle, the pressing part 148 that is arranged on the sensor gear 124 pressure-locked the claw portion 176 of pawl 170, thereby claw portion 176 is pivoted around axle 172.When claw portion 176 like this when axle 172 pivots, ratchet portions 182 engagements of claw portion 176 and locking pedestal 178, thus restriction locking pedestal 178 along the rotation of pull-out direction, and thereby restriction spool 20 along the rotation of pull-out direction.Therefore, can keep definitely and retrain and attempt towards vehicle occupant's health of the place ahead inertia motion roughly.
Under the state that belt strap 26 is drawn out, when insert through hole 22 by the power that applies of coil spring 36 when roll up direction is rotated, belt strap 26 is rolled-up and be contained on the outer peripheral portion of insertion through hole 22 from the base end side longitudinally of belt strap 26.Here, insert through hole 22 and begin to rotate along roll up direction by this way, V-gear 66 begins to rotate along roll up direction along with the rotation of inserting through hole 22.When V-gear 66 is higher than predetermined acceleration/accel (spin velocity) when roll up direction is rotated, restriction weight 94 is because inertia and lag in turn occurs along roll up direction with respect to V-gear 66, and restriction weight 94 is attempted to resist the applying power of retracing spring 88 and rotated along pull-out direction with respect to V-gear 66.In this case, restriction weight 94 slides up to such position, and in this position, supporting pin 98 is from changing the position in the position of vertical end of elongated hole 96 to the position of its other end.By restriction weight 94 is slided, eliminated the relative status of mating surfaces 100 with composition surface 104.
In addition, because the center-of-gravity position of restriction weight 94 is away from the axle center of spool 20, therefore from the axle center (center of turn) of V-gear 66, the rotation sensitive of 94 pairs of V-gears 66 of restriction weight, and fly out and it is reacted towards the rotation outside radially of V-gear 66 by attempting.Therefore, eliminated the relative status of mating surfaces 100 with composition surface 104, and when V-gear 66 further when roll up direction is rotated because this centnifugal force, restriction weight 94 be positioned at rotation radially the movement outside of the part of roll up direction side with respect to supporting pin 98 towards V-gear 66.In this case, as shown in Figure 5, restriction weight 94 is around near the position of supporting pin 98 pivots mating surfaces 100 is positioned at composition surface 106, and the realization contact position.Like this, by the pivot of restriction weight 94, interference portion 108 is near the contact portion 110 of inertial mass body 84.
Inserting through hole 22, will limit weight 94 by the centnifugal force of V-gear 66 and remain on contact position along under the state of roll up direction rotation.When having finished rolling of belt strap 26, suppose to insert through hole 22 and rotate on a small quantity along pull-out direction suddenly as for rolling the counteraction of finishing by insertion through hole 22.In this case, V-gear 66 and insertion through hole 22 may rotate along pull-out direction is a small amount of suddenly.
In this case, acceleration/accel occurs, and what accompany is that restriction weight 94 is attempted to move along roll up direction with respect to V-gear 66 at the opposite pull-out direction of V-gear 66 upper edges direction up to the present.But, be positioned under the state of reached position at restriction weight 94, restriction weight 94 be positioned at along roll up direction than mating surfaces 100 further from the side end of a side contact with bond pad 102, thereby prevented that restriction weight 94 from along roll up direction or along comprising that the direction of this roll up direction moves, will limit weight 94 thus and remaining on the state of in-position.
In addition, as previously mentioned, when at V-gear 66 places when acceleration/accel appears largely in pull-out direction, in attempt to keep the inertial mass body 84 of its position owing to inertia lag in turn appears, inertial mass body 84 thereby swing along roll up direction with respect to V-gear 66.Here, when inertial mass body 84 swings, as mentioned above, inertial mass body 84 upwards promotes W shape pawl 80, thereby the W shape pawl 80 and the hook tooth of the interior perimembranous office of gear parts 78 are meshed.
But under this state, promptly under the current state that reaches, if inertial mass body 84 is attempted swing, then interference portion 108 contacts with contact portion 110, thereby has limited the swing of inertial mass body 84.Therefore, in this case, inertial mass body 84 does not upwards promote W shape pawl 80, thus W shape pawl 80 not with the hook tooth engagement of the interior circumferential portion of gear parts 78.
Like this, in this Webbing retracting device 10, when having finished rolling of belt strap 26 by insertion through hole 22, prevented the hook tooth engagement of W shape pawl 80 effectively with gear parts 78, " the end lock-out state " of so-called Webbing retracting device 10 appearred in the result.
In addition, as mentioned above, after the swing of inertial mass body 84 has been limited, restriction weight 94 rotates along roll up direction around supporting pin 98 owing to the applying power of retracing spring 88, and restriction weight 94 slides up to such position, that is: supporting pin 98 is in an end place longitudinally of elongated hole 96, limits weight 94 in this case and turns back to non-contacting position with inertial mass body 84.Like this, turn back to non-contacting position, removed restriction the swing of inertial mass body 84 by making restriction weight 94.
Like this, be under the state of non-contacting position at restriction weight 94, if V-gear 66 rotates along pull-out direction suddenly, then centnifugal force also acts on the restriction weight 94.But even V-gear 66 rotates along pull-out direction suddenly, restriction weight 94 can not slide as follows, that is: the position of supporting pin 98 changes to its other end from the vertical end in elongated hole 96.Therefore, in this case, do not eliminate the relative status of mating surfaces 100 and composition surface 104, and attempt when supporting pin 98 pivots when restriction weight 94, composition surface 104 contacts with mating surfaces 100, thereby has prevented the pivot of restriction weight 94.Like this, even V-gear 66 rotates suddenly,, then limit weight 94 and can not move to the position that is arrived from non-contacting position if should rotate along pull-out direction.Therefore, under this state, interference portion 108 can not contact with contact portion 110, thereby has limited the swing of inertial mass body 84.
That is to say, in this Webbing retracting device 10, when slowing down fast, can not hinder under the situation that locks the function of inserting through hole 22, can prevent " end lock-out state " such as top Webbing retracting device 10.
And, because this Webbing retracting device 10 is configured to activate the mechanism that is used to prevent to enter the end lock-out state by the turning effort and the centnifugal force that use V-gear 66, be used to therefore prevent that the mechanism of end locking from can make compact.
In addition, in this Webbing retracting device 10, each member that is used to prevent to enter the mechanism of end lock-out state all is installed in the V-gear 66 in the gear parts 78.Therefore, even can realize above-mentioned excellent effect, also preventing the size increase of Webbing retracting device 10 and can limiting this size extremely effectively increases.
In addition, in this Webbing retracting device 10, as mentioned above, owing to be configured such that W shape pawl 80 and fixed part 90 are by retracing spring 88 application of forces, therefore compare with W shape pawl 80 wherein and the structure that limits all separated force application part application of force of weight 94, can reduce the number of components.Follow this minimizing, also reduced the quantity of member assembling process.In this case, can realize that cost reduces, and help to prevent or suppress the size increase of this Webbing retracting device 10 widely.
[second exemplary embodiment]
The structure of＜the second exemplary embodiment 〉
In Fig. 6, illustrate the structure of relevant portion of the Webbing retracting device 200 of second exemplary embodiment by exploded perspective, and in Fig. 7, show the structure of the relevant portion of Webbing retracting device 200 by front elevation according to the present invention.
, except following difference, have basically and the identical structure of top first exemplary embodiment according to the Webbing retracting device 200 of this exemplary embodiment.
In Webbing retracting device 200, in turning feeler mechanism 68, be formed with columniform double pointed nail 80A, and this double pointed nail 80A stretches out towards a side opposite with V-gear 66 from W shape pawl 80 at the other end place of W shape pawl 80.
The outer peripheral portion that passes the roll up direction side of inertial mass body 84 is formed with conjugate foramen 84A, and this conjugate foramen 84A is to the peripheral openings of inertial mass body 84, and is the elongated hole along the periphery of inertial mass body 84.The double pointed nail 80A of W shape pawl 80 inserts conjugate foramen 84A.When making 80 swings of W shape pawl along the swing of locking direction of actuation by inertial mass body 84, the end in contact of double pointed nail 80A and conjugate foramen 84A.When making 80 swings of W shape pawl by inertial mass body 84 along the direction swing opposite with the locking direction of actuation, double pointed nail 80A contacts with the other end of conjugate foramen 84A.Therefore, make the hunting range of the hunting range of W shape pawl 80 and inertial mass body 84 in OK range.
Replace in above-mentioned first exemplary embodiment retracing spring 88 be anchor to inertial mass body 84 as an end of the compression coil spring 202 of additional force application part, and the other end of compression coil spring 202 to anchor to V-gear 66.Compression coil spring 202 along the direction opposite with the locking direction of actuation to inertial mass body 84 application of forces.
The outer peripheral portion that passes the pull-out direction side of inertial mass body 84 is formed with as the lock slots 204 that is limited triangular-section partly, and this lock slots 204 is to the peripheral openings of inertial mass body 84.
Pass restriction weight 94 and be formed with engaging groove 206 as the general triangular cross section of bonding part, and be formed with at spool 20 center axis of engaging groove 206: opening portion 206A, this opening portion make the peripheral openings of engaging groove 206 to restriction weight 94; The first opposed face 206B, this first opposed face is positioned at the roll up direction side of opening portion 206A; With the second opposed face 206C, this second opposed face is positioned at the roll up direction side of the first opposed face 206B, but than the outer circumferential side of the first opposed face 206B further from spool 20.
The bond pad 102 of V-gear 66 has the general triangular shape, and is formed with on the spool 20 center axis edges of bond pad 102: the first face of joint 102A that is positioned at the pull-out direction side; With the second face of joint 102B, this second face of joint is positioned at the roll up direction side of the first face of joint 102A and the outer circumferential side of the more close spool 20 of the ratio first face of joint 102A.Bond pad 102 is inserted into engaging groove 206 inside, and restriction weight 94: when being arranged in spool 20 center axis, be arranged in the noncontact part, wherein, engaging groove 206 the side on the roll up direction and bond pad 102 at the contacts side surfaces on the roll up direction side (non-contacting position when the first opposed face 206B also faces (joint) second face of joint 102B in the face of (joint) first face of joint 102A and the second opposed face 206C); And as shown in Figure 9, when being arranged in spool 20 outer circumferential sides, be arranged in contact position, wherein, engaging groove 206 the side on the pull-out direction and bond pad 102 the contacts side surfaces on the pull-out direction side (when the first face of joint 102A in the face of (charging into) opening portion 206A and the first opposed face 206B contact position during also in the face of (joint) second face of joint 102B).
End as the retracing spring 208 of force application part anchors to restriction weight 94, and retracing spring 208 is the coil springs that are formed with coil shape fixed part 208A on it.Fixed part 208A anchors on the set pin 210 that is formed on the V-gear 66, and the other end of retracing spring 208 anchors to V-gear 66.In this case, retracing spring 208 to the restriction weight 94 from contact position along the direction application of force towards non-contacting position so that the restriction weight 94 be arranged in non-contacting position.
Roll up direction lateral edge portion office at restriction weight 94 is provided with circular bar shape turning cylinder 212, and this turning cylinder 212 stretches out to its V-gear 66 sides from restriction weight 94.
Be at V-gear 66 between the roll up direction lateral edge portions of the pull-out direction lateral edge portions of inertial mass body 84 and restriction weight 94 and be supported with rotationally as being construed as limiting the tabular bar 214 of roughly annular arrangement of the limiting part of unit.Connect at the part place of restriction weight 94 sides of bar 214 and to be formed with rotation hole 216.This rotation hole 216 is elongated hole, the turning cylinder 212 of restriction weight 94 passes this elongated hole, and when restriction weight 94 was arranged in non-contacting position, turning cylinder 212 was arranged in the end of inertial mass body 84 sides of rotation hole 216, thereby bar 214 is arranged in non-contacting position.In addition, when restriction weight 94 from non-contacting position when contact position moves, dwang 212 moves to the end of restriction weight 94 sides of rotation hole 216, and the rotation by bar 214, bar 214 is arranged in contact position (referring to Fig. 9).
Be formed with rectangular plate shape hook 218 at the part place of inertial mass body 84 sides of bar 214, and hook 218 stretches out from the opposition side of bar 214 towards V-gear 66 as restricted part.When bar 214 is arranged in non-contacting position, hook 218 separates from the lock slots 20 of inertial mass body 84, when bar 214 is arranged in contact position, hook 218 stretches in the lock slots 204, and can limit the swing (referring to Fig. 9) of inertial mass body 84 along the locking direction of actuation by the hook 218 and the joint (contact) of lock slots 204.
Here, when car retardation and because inertia makes occupant's health along roughly when the direction of vehicle front is moved, suddenly spur belt strap 26, spool 20 rotates along pull-out direction suddenly, and V-gear 66 rotates along pull-out direction suddenly with W shape pawl 80, inertial mass body 84 and bar 214.But because inertia, inertial mass body 84 does not rotate with respect to V-gear 66, and attempts to keep its position, and inertial mass body 84 is resisted the power that applies of compression coil springs 202 and swung with respect to V-gear 66.In this case, inertial mass body 84 is swung with respect to V-gear 66 from state shown in Figure 7, inertial mass body 84 is pushed W shape pawl 80 and is made 80 swings of W shape pawl, and for this reason, as shown in Figure 8, near the interior circumferential portion of the nearly gear ring 70 of one termination of W shape pawl 80, and with the interior circumferential portion that is formed on gear ring 70 on hook tooth engagement.
When belt strap 26 rolled-up on the outer peripheral portion of spool 20 and spool 20 by the power that applies of wind spring 36 when roll up direction is rotated, V-gear 66 rotates along roll up direction with W shape pawl 80, inertial mass body 84 and bar 214.When V-gear 66 with greater than predetermined acceleration/accel (cireular frequency) when roll up direction is rotated, then because inertia, restriction weight 94 is with respect to V-gear 66 hysteresis that rotates, thereby the power that applies of restriction weight 94 opposing retracing springs 208 and with respect to V-gear 66 swings, and restriction weight 94 is also because centnifugal force and to the outer circumferential side motion of V-gear 66.In this case, as shown in Figure 9, restriction weight 94 moves to contact position from non-contacting position, bar 214 rotates to contact position from non-contacting position, thereby the hook 218 of bar 214 stretches in the lock slots 204 of inertial mass body 84, has limited the swing of inertial mass body 84 towards the locking direction of actuation.Therefore, under the state that spool 20 rotates along roll up direction, restriction weight 94 is owing to centnifugal force keeps its contact position.
When spool 20 is rolled belt strap 26 fully, spool 20 and V-gear 66 rotate with hoot suddenly along pull-out direction owing to resilience, thereby V-gear 66 acceleration/accel occurs along pull-out direction, and restriction weight 94 is attempted to move along roll up direction with respect to V-gear 66.At this moment, as mentioned above, restriction weight 94 is arranged in contact position (contacts side surfaces of the side of the pull-out direction side of the engaging groove 206 of restriction weight 94 and the pull-out direction side of bond pad 102), prevented that restriction weight 94 is with respect to the motion of V-gear 66 towards roll up direction, kept wherein limiting weight 94 and bar 214 is in the state of contact position, and kept the hook 218 of its king-rod 214 to stretch into state in the lock slots 204 of inertial mass body 84.
Therefore, as mentioned above, even V-gear 66 occurs than high acceleration along pull-out direction, and inertial mass body 84 attempts along the locking direction of actuation with respect to V-gear 66 swings, and above-mentioned hook 218 stretches into lock slots 204 and limited the swing of inertial mass body 84 towards the locking direction of actuation.Therefore, inertial mass body 84 can upwards not promote W shape pawl 80, and W shape pawl 80 also not can with the hook tooth engagement of the interior circumferential portion of gear parts 78, therefore can prevent effectively that Webbing retracting device 200 from entering so-called " end lock-out state ".
In addition, after restriction weight 94 prevented inertial mass body 84 swings, restriction weight 94 and bar 214 turned back to non-contacting position owing to the applying power of retracing spring 208 from contact position, thereby removed the restriction to inertial mass body 84 swings.
Like this, be under the state of non-contacting position,, then also have centrifugal action on restriction weight 94 if V-gear 66 rotates along pull-out direction suddenly at restriction weight 94 and bar 214.But, even V-gear 66 rotates along pull-out direction suddenly, (the first opposed face 206B of restriction weight 94 engages with the first face of joint 102A of bond pad 102 because restriction weight 94 is in non-contacting position, and the second opposed face 206C of restriction weight 94 also engages with the second face of joint 102B of bond pad 102), therefore prevented restriction weight 94 owing to centnifugal force and with respect to V-gear 66 and towards the motion of V-gear 66 outer circumferential sides, thereby restriction weight 94 and bar 214 still are arranged in non-contacting position.Therefore, can prevent the restriction of inertial mass body 84 towards the swing of locking direction of actuation.
In the above described manner, except since retracing spring 88 to the effect of the W shape pawl 80 and restriction weight 94 application of forces, this exemplary embodiment can show and the similar effect of above-mentioned first exemplary embodiment.
In addition, compression coil spring 202 is to inertial mass body 84 application of forces, and retracing spring is also 84 to restriction weight 94 application of forces.Therefore, inertial mass body 84 and restriction weight 94 all can be applied in sizeable power.
And from the motion of non-contacting position to contact position, bar 214 moves to contact position from non-contacting position by restriction weight 94, thereby has prevented that by bar 214 inertial mass body 84 is towards the swing of locking direction of actuation.Therefore, by the rotation of V-gear 66, restriction weight 94 is suitably moved to contact position from non-contacting position, and can suitably limit the swing of inertial mass body 84 towards the locking direction of actuation by bar 214 towards roll up direction.
[the 3rd exemplary embodiment]
The structure of＜the three exemplary embodiment 〉
In Figure 10, illustrate the structure of relevant portion of the Webbing retracting device 300 of the 3rd exemplary embodiment by exploded perspective, and in Figure 11, show the structure of the relevant portion of Webbing retracting device 300 by front elevation according to the present invention.
, except following difference, have basically and the identical structure of top first exemplary embodiment according to the Webbing retracting device 300 of this exemplary embodiment.
In Webbing retracting device 300, in turning feeler mechanism 68, in the second top exemplary embodiment, W shape pawl 80 is provided with double pointed nail 80A, inertial mass body 84 is provided with conjugate foramen 84A and lock slots 204, and compression coil spring 202 is across between inertial mass body 84 and V-gear 66.
But, set pin 92, supporting pin 98 and the bond pad 102 of retracing spring 88 in top first exemplary embodiment, restriction weight 94, V-gear 66 are not set.
Near the part place of the V-gear 66 pull-out direction lateral edges of inertial mass body 84 has been wholely set circular bar shape supporting pin 302, and supporting pin 302 stretches out from V-gear 66.
Thereby the periphery of supporting pin 302 is provided with bar 304 and can rotates in limited range, and bar 304 is elongated and is the arm type of rectangular plate shape substantially.
Be supported on the center of supporting pin 302 rotationally as an end of the roughly U-shaped bar friction spring 310 of the friction force application part that constitutes the friction force production part, and the other end of friction spring 310 bends to U-shaped.From an end of friction spring 310 on the direction of its other end, friction spring 310 stretches out (referring to Figure 14) gradually towards the direction opposite with V-gear 66, and friction spring 3 10 have towards turning cylinder to the power that applies.Friction spring 310 part at one end stretches into a connecting panel place on the outer circumferential side that is positioned at V-gear 66 in connecting panel 308, and stretch into another connecting panel place on the central side that is positioned at V-gear 66 in connecting panel 308, and be installed on the bar 304, in this case, friction spring 310 and bar 304 can rotate each other integratedly.
The shaft-like lid 312 of essentially rectangular (cap) as the coating member that constitutes the friction force production part is installed in the part place of the other end that is positioned at friction spring 310, and is positioned at the shaft-like central side towards V-gear 66 of part semicircular in shape that covers 312 far-end and stretches out.Shown in Figure 15 is detailed, be formed with insertion groove 314 in the office, inside of lid 312, and insertion groove 314 is to V-gear 66 side openings.The part that is arranged in friction spring 310 other ends is assembled to covers 312 insertion groove 314, and in this case, lid 312 is assembled on the friction spring 310.At lid 312 places, be formed with the jut 316 of predetermined quantity (being four in this exemplary embodiment) at the part place of the both sides of the opening of insertion groove 314, and jut 316 stretches out to the open side of insertion groove 314, and friction spring 310 is anchored at jut 316 and sentences and prevent to cover 312 and drop from friction spring 310.
As shown in figure 14, lid 312 contacts with the surface (plane) of V-gear 66 sides of gear ring 70 by the power that applies of friction spring 310 in the part of far-end, and when V-gear 66 rotates, between the surface of V-gear 66 sides of the described part of lid 312 far-end and gear ring 70, produce friction, thereby cover 312, friction spring 310 and bar 304 rotate integratedly.In this case, as shown in figure 12, when V-gear 66 when pull-out direction rotates, bar 304 is arranged in non-contacting position, the hook 306 of bar 304 separates from the lock slots 204 of inertial mass body 84, and as shown in figure 13, when V-gear 66 when roll up direction is rotated, bar 304 is arranged in contact position, and the hook 306 of bar 304 stretches in the lock slots 204.
In addition, as mentioned above, friction spring 310 is in the described part at other end place is inserted in a described connecting panel 308 on the outer circumferential side of V-gear 66 of bar 304, and be inserted in described another connecting panel 308 on the central side of V-gear 66 of bar 304, and be installed on the bar 304, so bar 304 can be along contacting to the direction of V-gear 66 sides with V-gear 66 opposition sides with friction spring 310.In this case, the power that applies of friction spring 310 can be along the turning cylinder of friction spring 310 and bar 304 to being delivered to bar 304, can be suppressed between friction spring 310 and the bar 304 and to produce friction, thereby can suppress by the power that applies of friction spring 310 obstruction to the rotation of friction spring 310 and bar 304.
Here, when car retardation and because inertia makes occupant's health along roughly when the direction of vehicle front is moved, spur belt strap 26 suddenly, spool 20 rotates along pull-out direction suddenly, and V-gear 66 rotates along pull-out direction suddenly with W shape pawl 80, inertial mass body 84, bar 304 and friction spring 310 (comprise and cover 312).Because inertia, inertial mass body 84 do not rotate with respect to V-gear 66, inertial mass body 84 attempts to keep its position, thereby inertial mass body 84 is resisted the power that applies of compression coil springs 202 and swung with respect to V-gear 66.In addition, as shown in figure 12, between the surface of V-gear 66 sides of the described part of lid 312 far-end and gear ring 70, produce friction, and unitary rotation by friction spring 310 (comprise and cover 312) and bar 304, make bar 304 be arranged in non-contacting position, and the hook 306 of bar 304 is from lock slots 204 separation of inertial mass body 84.In this case, allow inertial mass body 84 with respect to V-gear 66 swings, and when inertial mass body 84 is swung with respect to V-gear 66, inertial mass body 84 is pushed W shape pawl 80 and is made 80 swings of W shape pawl, near the interior circumferential portion of the nearly gear ring 70 of one termination of W shape pawl 80, and with the interior circumferential portion that is formed on gear ring 70 on hook tooth engagement.
But, when belt strap 26 rolled-up on the outer peripheral portion of spool 20 and spool 20 by the power that applies of wind spring 36 when roll up direction is rotated, V-gear 66 rotates along roll up direction with W shape pawl 80, inertial mass body 84, bar 304 and friction spring 310 (comprise and cover 312).Inertial mass body 84 does not rotate with respect to V-gear 66 because inertia attempts to keep its position, and inertial mass body 84 attempts to resist the power that applies of compression coil spring 202 and with respect to V-gear 66 swings.In addition, as shown in figure 13, between the surface of V-gear 66 sides of the described part of lid 312 far-end and gear ring 70, produce friction, and friction spring 310 (comprise and cover 312) and insertion groove 314 unitary rotation, bar 304 is arranged in contact position, and the hook 306 of bar 304 stretches in the lock slots 204 of inertial mass body 84.In this case, limited the swing of inertial mass body 84 with respect to V-gear 66.
When spool 20 is rolled belt strap 26 fully, even spool 20 and V-gear 66 rotate with hoot suddenly along pull-out direction owing to resilience, bar 304 also is held in place in the state of contact position, and the hook 306 of bar 304 remains on the state in the lock slots 204 that stretches into inertial mass body 84.
Therefore, as mentioned above, even V-gear 66 produces than high acceleration along pull-out direction, and inertial mass body 84 is owing to inertia is attempted to swing with respect to V-gear 66 along the locking direction of actuation, and above-mentioned hook 306 inserts lock slots 204 and also limited the swing of inertial mass body 84 along the locking direction of actuation.Therefore, inertial mass body 84 can upwards not promote W shape pawl 80, and since W shape pawl 80 not can with the hook tooth engagement of the interior circumferential portion of gear parts 78, therefore can prevent effectively that Webbing retracting device 300 from entering so-called " end lock-out state ".
Pass through said structure, except be configured to turning effort by V-gear 66 and action of centrifugal force prevent to enter the end lock-out state mechanism effect and by retracing spring 88 to the effect of the W shape pawl 80 and restriction weight 94 application of forces, this exemplary embodiment also can have and the similar effect of above-mentioned first exemplary embodiment.
In addition, in this Webbing retracting device 300, since use the turning effort of V-gear 66 and cover 312 and the friction force of gear ring 70 be configured for preventing to enter the mechanism of end lock-out state, therefore can will be used to prevent that the mechanism that enters the end lock-out state from making compact.
And, bar 304 by cover 312 and gear ring 70 between friction force and move to contact position from non-contacting position, and by bar 304 restriction inertial mass bodies 84 towards the swing of locking direction of actuation.Therefore, bar 304 can suitably move to contact position from non-contacting position along the rotation of roll up direction by V-gear 66, and can suitably limit the swing of inertial mass body 84 towards the locking direction of actuation by bar 304.
In addition, the part of the far-end of lid 312 contacts with gear ring 70, and produces friction between lid 312 and gear ring 70.Therefore, can between lid 312 and gear ring 70, carry out surface and contact, thereby can between lid 312 and gear ring 70, carry out level and smooth and stable relative motion, can suppress thus owing to covering 312 and the caused by relative motion noise of gear ring 70.
In this exemplary embodiment, structure is for like this, that is: the lid 312 that is installed on the part at another distolateral place of friction spring 310 contacts with gear ring 70, needn't be installed on the described part at another distolateral place of friction spring 310 but cover 312, can be so that the other end of friction spring 310 contacts with gear ring 70.
[the 4th exemplary embodiment]
The structure of＜the four exemplary embodiment 〉
In Figure 16, illustrate the structure of relevant portion of the Webbing retracting device 400 of the 4th exemplary embodiment by exploded perspective, and in Figure 17, show the structure of the relevant portion of Webbing retracting device 400 by front elevation according to the present invention.
Except following difference, has identical with first exemplary embodiment basically structure according to the Webbing retracting device 400 of this exemplary embodiment.
In Webbing retracting device 400, at turning feeler mechanism 68 places, with with second exemplary embodiment in identical mode, W shape pawl 80 is provided with double pointed nail 80A, inertial mass body 84 is provided with conjugate foramen 84A and lock slots 204, and compression coil spring 202 is also across between inertial mass body 84 and V-gear 66.
But, set pin 92, supporting pin 98 and the bond pad 102 of retracing spring 88 in top first exemplary embodiment, restriction weight 94, V-gear 66 are not set.
V-gear 66 has been wholely set cylindrical support pin 402 in the vicinity of the marginal portion of the pull-out direction side of inertial mass body 84, and supporting pin 402 stretches out to V-gear 66 sides.
V-gear 66 is provided with the tabular sliding part 410 that conduct constitutes the link of friction force production part in the pull-out direction side of bar 404.The guide protrusion 412 that constitutes the crooked rectangular plate shape of guide member stretches out from the surface of V-gear 66 sides of sliding part 410, and guide protrusion 412 is along the circumferential skewing of V-gear 66.Guide protrusion 412 is charged in the bullport 414 and is contacted (referring to Fig. 2, Figure 20 and Figure 21) with sensor frame 62, and by guide protrusion 412 is slided (motion) along bullport 414, sliding part 410 can be along the circumferential slip (motion) of V-gear 66.
Connect sliding part 410 and be formed with the drive hole 416 that constitutes drive part in the part of bar 404 sides, and thereby sliding part 410 and bar 404 link together by the drive plate 408 of charging into the bar 404 that can move rotationally therein in the drive hole 416, and, bar 404 is rotated by making the circumferential slip of sliding part 410 along V-gear 66.
Be supported on the surface that is positioned at V-gear 66 opposition sides of sliding part 410 rotationally as an end of the roughly U-shaped bar friction spring 418 of the friction force application part that constitutes the friction force production part, and the other end of friction spring 418 bends to roughly U-shaped.Friction spring 418 is arranged in another distolateral described part than the opposition side of the more close V-gear 66 of described part of side at one end, and friction spring 418 have towards turning cylinder to the power that applies.On the surface that is positioned at V-gear 66 opposition sides of sliding part 410, be formed with the insertion groove 420 of waveform slit-shaped, and friction spring 418 inserts in this insertion groove 420 in described one distolateral part, thereby prevent that friction spring 418 from rotating with respect to sliding part 410.Place, bottom surface at insertion groove 420 is formed with square column type supporting projections 422, and supported projection 422 supports the part of friction spring 418 at a described end place at the surface thereof place.
As Figure 20 and shown in Figure 21, the other end of friction spring 418 is because the power that applies of friction spring 418 and contacting with the surface (plane) of V-gear 66 sides of gear ring 70, and by between the surface of V-gear 66 sides of the described other end of friction spring 418 and gear ring 70, producing friction force, friction spring 418 and sliding part 410 circumferentially slide with respect to V-gear 66 one along V-gear 66, thereby bar 404 rotates.In this case, as shown in figure 18, when V-gear 66 when pull-out direction rotates, bar 404 is arranged in non-contacting position, thereby the hook 406 of bar 404 separates from the lock slots 204 of inertial mass body 84, and when V-gear 66 when roll up direction is rotated, as shown in figure 19, bar 404 is arranged in contact position, and the hook 406 of bar 404 inserts in the lock slots 204.
Here, when car retardation and because inertia makes occupant's health along roughly when the direction of vehicle front is moved, spur belt strap 26 suddenly, spool 20 rotates along pull-out direction suddenly, and V-gear 66 rotates along pull-out direction suddenly with W shape pawl 80, inertial mass body 84, bar 404, sliding part 410 and friction spring 418.Because inertia, inertial mass body 84 do not rotate with respect to V-gear 66, but attempt to keep its position, inertial mass body 84 is resisted the power that applies of compression coil springs 202 and is swung with respect to V-gear 66.In addition, as shown in figure 18, between the surface of V-gear 66 sides of the described other end of friction spring 418 and gear ring 70, produce friction force, thereby by making friction spring 418 and sliding part 410 circumferentially sliding along V-gear 66 with respect to V-gear 66, bar 404 rotates, thereby bar 404 is arranged in non-contacting position, and the hook 406 of bar 404 separates from the lock slots 204 of inertial mass body 84.In this case, inertial mass body 84 can be with respect to V-gear 66 swings, and inertial mass body 84 is with respect to V-gear 66 swings, inertial mass body 84 pushes W shape pawl 80 so that 80 swings of W shape pawl, near the interior circumferential portion of the nearly gear ring 70 of one termination of W shape pawl 80, and with the interior circumferential portion that is formed on gear ring 70 on hook tooth engagement.
But, when belt strap 26 rolled-up on the outer peripheral portion of spool 20 and spool 20 when the power that the applies lower edge of wind spring 36 roll up direction is rotated, V-gear 66 rotates along roll up direction with W shape pawl 80, inertial mass body 84, bar 404, sliding part 410 and friction spring 418.Therefore, because inertia, inertial mass body 84 does not rotate with respect to V-gear 66 but attempts to keep its position, and the power that applies of inertial mass body 84 opposing compression coil springs 202 and with respect to V-gear 66 swings.In addition, as shown in figure 19, between the surface of V-gear 66 sides of the described other end of friction spring 418 and gear ring 70, produce friction force, by making friction spring 418 and sliding part 410 circumferentially sliding along V-gear 66 with respect to V-gear 66, bar 404 rotates, thereby bar 404 is arranged in contact position.The hook 406 of bar 404 is charged in the lock slots 204 of inertial mass body 84.In this case, limited the swing of inertial mass body 84 with respect to V-gear 66.
When spool 20 is rolled belt strap 26 fully, even spool 20 and V-gear 66 rotate with hoot suddenly along pull-out direction owing to resilience, bar 404 also remains in the state of contact position, and the hook 406 of bar 404 keeps stretching into the state in the lock slots 204 of inertial mass body 84.
Therefore, as mentioned above, even V-gear 66 acceleration/accel largely occurs towards pull-out direction, and inertial mass body 84 is owing to inertia is attempted along the locking direction of actuation with respect to V-gear 66 swings, because above-mentioned hook 406 is charged into lock slots 204, also can limit the swing of inertial mass body 84 along the locking direction of actuation.Therefore, inertial mass body 84 can upwards not promote W shape pawl 80, and since W shape pawl 80 not can with the hook tooth engagement of the interior circumferential portion of gear parts 78, therefore can prevent effectively that Webbing retracting device 400 from entering so-called " end lock-out state ".
Pass through said structure, except be configured to turning effort by V-gear 66 and action of centrifugal force prevent to enter the end lock-out state mechanism effect and by retracing spring 88 to the effect of the W shape pawl 80 and restriction weight 94 application of forces, this exemplary embodiment also can have and the similar effect of above-mentioned first exemplary embodiment.
In addition, because being used to of Webbing retracting device 400 prevents that the mechanism that enters the end lock-out state is configured to operate by the turning effort of V-gear 66 and the friction force between friction spring 418 and the gear ring 70, therefore can will be used to prevent that the mechanism that enters the end lock-out state from making compactness.
And bar 404 moves to contact position from non-contacting position by the friction force between friction spring 418 and the gear ring 70, and by the swing of bar 404 restriction inertial mass bodies 84 towards the locking direction of actuation.For this reason, bar 404 can suitably move to contact position from non-contacting position along the rotation of roll up direction by V-gear 66, and can suitably limit the swing of inertial mass body 84 towards the locking direction of actuation by bar 404.
In addition, because therefore the simple shape of bar 404 and sliding part 410 can improve stack-mounted comformability and processibility, and can cost-cutting.
In this exemplary embodiment, structure is for like this, that is: the other end of friction spring 418 and gear ring 70 contact with each other, but can be as in the 3rd exemplary embodiment, the part of friction spring 418 at another distolateral place can be equipped with covers 312, and can make and cover 312 and contact with gear ring 70.
Claims (12)
1, a kind of Webbing retracting device, this Webbing retracting device is characterised in that and comprises:
Spool, this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap;
Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool;
Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by the actuating of self;
Rotational testing component, this rotational testing component is arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, this rotational testing component moves to activate described Lock Part towards predetermined locking direction of actuation; And
Limiting unit, this limiting unit are arranged on described rotor place, and limit described rotational testing component because described belt strap stops caused resilience and moving towards described locking direction of actuation to rolling of described spool.
2, Webbing retracting device according to claim 1, it is characterized in that, this Webbing retracting device also comprises and prevents parts, under the state that described rotor rotates along described pull-out direction, this prevents that parts from preventing that described limiting unit from limiting towards the mobile of described locking direction of actuation described rotational testing component, and above-mentioned state and described rotor are because the rolling the resilience that stops to cause of described belt strap and the state that rotates along described pull-out direction is different.
3, Webbing retracting device according to claim 1 is characterized in that,
Described limiting unit is arranged to and can be moved between contact position and non-contacting position, at described contact position, described limiting unit contacts and can limit described rotational testing component to the moving of described locking direction of actuation with described rotational testing component, described non-contacting position separates with described contact position and allows described rotational testing component to move towards described locking direction of actuation; And
Described limiting unit by described rotor along the rotation of described roll up direction and move to described contact position.
4, Webbing retracting device according to claim 3 is characterized in that, the described limiting unit that is in described non-contacting position moves to described contact position by the centnifugal force of the rotation generation of described rotor.
5, Webbing retracting device according to claim 4 is characterized in that, the described limiting unit that is in described non-contacting position moves to described contact position by the friction force of the rotation generation of described rotor.
6, Webbing retracting device according to claim 3 is characterized in that, this Webbing retracting device also comprises force application part, this force application part from described contact position towards described non-contacting position to the described limiting unit application of force.
7, Webbing retracting device according to claim 6 is characterized in that, described force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.
8, Webbing retracting device according to claim 1 is characterized in that, this Webbing retracting device also comprises additional force application part, this force application part along the direction opposite with described locking direction of actuation to the described rotational testing component application of force.
9, Webbing retracting device according to claim 1 is characterized in that, described limiting unit comprises:
Movable parts, this movable parts is by the resilience campaign of described belt strap when rolling of described spool stops; With
Limiting part, this limiting part be by the motion campaign of described movable parts, and limit the rotation of described rotational testing component towards described locking direction of actuation.
10, Webbing retracting device according to claim 1 is characterized in that, described limiting unit comprises:
The friction force production part, this friction force production part is owing to the rotation of described rotor produces friction force and motion; And
Movement limiting portion spare, this movement limiting portion spare be by the motion campaign of described friction force production part, and limit described rotational testing component moving towards described locking direction of actuation.
11, a kind of Webbing retracting device, this Webbing retracting device is characterised in that and comprises:
Spool, this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap;
Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool;
Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by the actuating of self;
Rotational testing component, this rotational testing component is arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, this rotational testing component moves to activate described Lock Part towards predetermined locking direction of actuation; And
Limiting unit, this limiting unit are arranged on described rotor place, and limit described rotational testing component because the resilience that described belt strap stops to cause to rolling of described spool and towards the moving of described locking direction of actuation,
Wherein, described limiting unit activated by its inertia and the centnifugal force that produced by the rotation of described rotor.
12, a kind of Webbing retracting device, this Webbing retracting device is characterised in that and comprises:
Spool, this spool is by rotating along roll up direction and rolling this belt strap also with this belt strap storage thereon from the base end side of long ribbon shape belt strap;
Rotor, this rotor are arranged to and can be rotated with respect to described spool, thereby and be connected to described spool and can rotate along with the rotation of described spool;
Lock Part, this Lock Part limits the rotation of described spool along pull-out direction by the actuating of self;
Rotational testing component, this rotational testing component is arranged on described rotor place, and described rotor at a predetermined velocity or bigger speed when described pull-out direction rotates, this rotational testing component moves to activate described Lock Part towards predetermined locking direction of actuation; And
Limiting unit, this limiting unit are arranged on described rotor place, and limit described rotational testing component because the resilience that described belt strap stops to cause to rolling of described spool and towards the moving of described locking direction of actuation,
Wherein, described limiting unit activated by the friction force that the rotation by described rotor produces.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006170536 | 2006-06-20 | ||
| JP2006170536 | 2006-06-20 | ||
| JP2006343277 | 2006-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092128A true CN101092128A (en) | 2007-12-26 |
| CN100537310C CN100537310C (en) | 2009-09-09 |
Family
ID=38990626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101125108A Active CN100537310C (en) | 2006-06-20 | 2007-06-19 | Webbing retracting device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5166593B2 (en) |
| CN (1) | CN100537310C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259631A (en) * | 2010-05-27 | 2011-11-30 | 株式会社东海理化电机制作所 | Webbing retractor |
| CN102303579A (en) * | 2011-06-28 | 2012-01-04 | 常州博万达汽车安全设备有限公司 | Locking fluted disc used for safety belt retractor |
| CN103298664A (en) * | 2010-11-11 | 2013-09-11 | 法兴萨尔茨堡有限责任公司 | Locking unit with end-position locking catch for a seatbelt retractor. |
| CN103569032B (en) * | 2012-08-10 | 2017-05-17 | 株式会社东海理化电机制作所 | Webbing take-up device |
| CN110745099A (en) * | 2018-07-23 | 2020-02-04 | 丰田自动车株式会社 | Tape winding device |
| CN113397866A (en) * | 2021-06-17 | 2021-09-17 | 吉林大学 | Preventive stoma patient enema combines anus lavage pelvic floor muscle training hip bath device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6228556B2 (en) * | 2015-02-12 | 2017-11-08 | 株式会社東海理化電機製作所 | Webbing take-up device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3683648B2 (en) * | 1996-06-04 | 2005-08-17 | エヌエスケー・オートリブ株式会社 | Seat belt retractor |
| JP3204911B2 (en) * | 1996-11-06 | 2001-09-04 | 株式会社東海理化電機製作所 | Webbing take-up device |
| JP3287409B2 (en) * | 1999-10-28 | 2002-06-04 | 日本精工株式会社 | Seat belt device with seat belt retractor with locking mechanism |
| JP2004074828A (en) * | 2002-08-09 | 2004-03-11 | Tokai Rika Co Ltd | Webbing winding device |
-
2007
- 2007-06-19 CN CNB2007101125108A patent/CN100537310C/en active Active
-
2011
- 2011-12-08 JP JP2011269162A patent/JP5166593B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259631A (en) * | 2010-05-27 | 2011-11-30 | 株式会社东海理化电机制作所 | Webbing retractor |
| CN102259631B (en) * | 2010-05-27 | 2014-03-12 | 株式会社东海理化电机制作所 | Webbing retractor |
| CN103298664A (en) * | 2010-11-11 | 2013-09-11 | 法兴萨尔茨堡有限责任公司 | Locking unit with end-position locking catch for a seatbelt retractor. |
| CN103298664B (en) * | 2010-11-11 | 2016-01-20 | 法兴萨尔茨堡有限责任公司 | For the locking unit stopped with end position locking of Webbing retractor |
| CN102303579A (en) * | 2011-06-28 | 2012-01-04 | 常州博万达汽车安全设备有限公司 | Locking fluted disc used for safety belt retractor |
| CN103569032B (en) * | 2012-08-10 | 2017-05-17 | 株式会社东海理化电机制作所 | Webbing take-up device |
| CN110745099A (en) * | 2018-07-23 | 2020-02-04 | 丰田自动车株式会社 | Tape winding device |
| CN113397866A (en) * | 2021-06-17 | 2021-09-17 | 吉林大学 | Preventive stoma patient enema combines anus lavage pelvic floor muscle training hip bath device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5166593B2 (en) | 2013-03-21 |
| JP2012046186A (en) | 2012-03-08 |
| CN100537310C (en) | 2009-09-09 |
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