CN2923446Y - Pre-loading apparatus - Google Patents
Pre-loading apparatus Download PDFInfo
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- CN2923446Y CN2923446Y CN 200620117055 CN200620117055U CN2923446Y CN 2923446 Y CN2923446 Y CN 2923446Y CN 200620117055 CN200620117055 CN 200620117055 CN 200620117055 U CN200620117055 U CN 200620117055U CN 2923446 Y CN2923446 Y CN 2923446Y
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Abstract
To provide a pre-loader miniaturizable at low cost. In the pre-loader 10, a drawing hole 30 is formed in an intermediate portion in the center axial direction of a cylinder 12, and a wire 38 with one end thereof locked to a piston 32 is passed through the drawing hole 30 formed in the intermediate portion in the axial direction of the cylinder 12, and drawn outside the cylinder 12. Thus, in the pre-loader 10, a structure can be realized, in which an existing tubular member having the straight axis is used for the cylinder 12, and a gas generator 14 is attached to its end by a screw. In such a structure, the gas generator 14 is fitted to one end of the cylinder 12, and the dimension of the pre-loader 10 along the direction across the center axis of the cylinder 12 can be reduced.
Description
Technical field
The utility model relates to a kind of preloading device, it is used on the automobile seat seat belt device, and when vehicle abrupt deceleration etc., by tension bracelet or anchor plate (anchor plate), minimizing be the amount of movement of occupant restraint with the passenger's body of safety strap.
Background technology
Be used to retrain the seat safety belt apparatus of the occupant's health that is sitting on the vehicle seat, generally all use the body-restraining seat belt device.
The base end part of the long ribbon shape safety strap of this seat safety belt apparatus, fastening begin to reel and be contained on the spool from base end side on the spool of the Webbing take-up device that is called constrictor etc.The end side of safety strap extends to the roughly top of vehicle from spool, and by being formed at after the narrow slit on the through fixedly belt loop, turns back to the roughly below of vehicle, and above-mentioned through fixedly belt loop is fixed on central pillar top etc. and locates.In addition, the terminal fastening of safety strap is near the anchor plate that is arranged on the Webbing take-up device.
At anchor plate and through fixedly between the belt loop, on safety strap, be provided with hyoplastron, and can remain on hyoplastron on the bracelet, bracelet is arranged on opposition side with Webbing take-up device and anchor plate across the seat.
The occupant is under the state that is sitting on the seat, and the pulling hyoplastron safety strap is walked around health when spool pulls out, and hyoplastron is remained in the bracelet, thereby safety strap just ties up on occupant's the health, and occupant's health is fettered by safety strap.
On the other hand, on seat safety belt apparatus, be provided with at driving vehicle and be in abrupt deceleration state following time, be used to prevent or suppress the various devices that the occupant moves to the roughly front side inertia of vehicle, one of them example is disclosed in the TOHKEMY 2003-146184 communique.
Disclosed device is to be called preloading device in above-mentioned document, perhaps the device of takeup type pretensioner.This preloading device has cylinder.Fastening has the piston of steel rope base end side can be slidingly received in cylinder interior.
In addition, on an end of cylinder, master collet is installed.Be formed with the pilot hole of both ends open on master collet, the steel rope that extracts from an end of cylinder is drawn towards the outside of master collet by after the pilot hole.At the front end of the steel rope that extracts from master collet, be fixed with above-mentioned bracelet, when piston when the other end of cylinder slides, steel rope just spurs bracelet, and bracelet is moved.
On the other hand, on master collet, be formed with shaft sleeve part.Shaft sleeve part along with a direction of the axis direction quadrature of cylinder, form tubular in the axial direction.Gas producer is installed in shaft sleeve part.In gas producer, for example held the gas producing agent that produces gas in a flash in burning, the gas that produces in gas producer after the air chamber by the master collet that is communicated with shaft sleeve part, is supplied with to cylinder interior.
That is, the acceleration pick-up on being loaded in vehicle etc. detects the following time of state that vehicle in travelling is in abrupt deceleration, and gas producer is just worked, and moment produces gas in gas producer.The gas that produces in gas producer is by the air chamber of master collet, from an end of the cylinder internal feed to cylinder.
When the interior pressure of cylinder rose because of gas is fed to cylinder interior, piston just slided to the other end of cylinder, so, keep the bracelet of hyoplastron to be hauled mobile by steel rope.Like this, when hyoplastron and bracelet when pulled, safety strap just is pulled with hyoplastron, so only point relaxation of safety strap (promptly so-called " degree of tightness amount ") has just been eliminated, simultaneously, safety strap is with the health of more powerful strength occupant restraint.
, in above-mentioned preloading device, steel rope is that the end from cylinder extracts, and, after by the pilot hole that is installed in the master collet on cylinder one end, be drawn out to the outside of master collet.
According to this structure, gas producer structurally will be subjected to from the restriction of installing with the direction of axial intersection (quadrature) of cylinder, and the result is on an end that master collet is installed in cylinder, and gas producer is installed on the master collet, then the installation of gas producer is just very difficult.
, owing to compare with cylinder etc., the shape of master collet (structure) is more complicated, must be shaped with die-casting technique, and cost is very high.
And, if use gas producer is installed in structure on the master collet from the direction with the axial quadrature of cylinder, will produce along with the direction of the axial quadrature of cylinder on the size of the preloading device that is provided with become big problem.
Summary of the invention
The utility model considers the above-mentioned fact and puts forward, and its objective is that a kind of cost is provided is low and can realize the preloading device of miniaturization.
The preloading device of the utility model first aspect is characterized in that, has following parts: cylinder, form the tubular of both ends open, and on the part of the pars intermedia periphery of axis direction, be provided with and be communicated with inner and exterior interconnecting part; Piston can be slidably arranged on more distolateral than in the more close above-mentioned cylinder of above-mentioned interconnecting part another; Link, an end fastening are on piston, and the other end is by after the above-mentioned interconnecting part, be drawn out to the outside of above-mentioned cylinder, and then under the state that safety strap is tied up on occupant's health, the support portion of supporting above-mentioned safety strap is connected on the other end directly or indirectly at least; Gas generation apparatus is installed in an end of above-mentioned cylinder, by work another distolateral supply gas in above-mentioned cylinder.
In the preloading device of the utility model first aspect, the gas generation apparatus work on a side opening end that is installed in the tubular cylinder, during from gas generation apparatus generation gas, the interior pressure of cylinder just rises.Like this, if cylinder in press liter, just the piston that then is housed in the cylinder slides to the other end of cylinder.
When piston when the other end of cylinder slides, the link that an end is connected on the piston is pulled by piston, and then in the outside of cylinder, the support component that is connected on the link is pulled.The safety strap that constitutes seat safety belt apparatus is being supported in the support portion, therefore in this state, for example, if safety strap is in the state that is tied up on the health that is sitting in the occupant on the seat, so, then move as described above the support portion, thereby will force to spur safety strap, and safety strap is the health of occupant restraint more effectively.
At this moment, in the preloading device of above-mentioned embodiment of the present utility model, the link of an end fastening on piston is after the interconnecting part that forms on the pars intermedia of the axis direction that is passed in cylinder, be drawn out to the outside of cylinder, its other end is connected on the outer support portion of cylinder.Like this, owing to be used for link is drawn out to the exterior interconnecting part of cylinder, not on an end of cylinder, to form, but on the pars intermedia of the axis direction of cylinder, form, so can be installed in gas generation apparatus one end of cylinder.
Like this, by realizing that gas generation apparatus is installed in structure on the end of cylinder, just can be used for cylinder to axis existing tubular part linearly, just gas generation apparatus is installed in the one end with screw and so on, just can produce preloading device, thus cost-cutting significantly.
Also have,,, can make preloading device diminish on the whole so can reduce the size of preloading device on the direction of intersecting with the cylinder axis axis because gas generation apparatus is installed in an end of cylinder.Like this, no matter be in the compartment, or near the very narrow like that limited space of entablement chair, the space that is provided with that can both easily guarantee preloading device of the present utility model.
In addition, as long as it is just passable that the support portion in the utility model has the structure of energy support safety band, as an example, if so-called body-restraining seat belt device, the shoulder fixer (shoulder anchor) etc. of pars intermedia that just is equivalent to the length direction of the anchor plate of the fixing terminal part of safety strap and support safety band.
In addition, as long as because the support portion has following structure, that is, under the state that the occupant fastens one's safety belt, can the support safety band.So, under the state that the occupant does not fasten one's safety belt, support safety band not.As an example of the support portion of this structure, for example, the bracelet that keeps hyoplastron etc. is arranged, hyoplastron is arranged on the pars intermedia of length direction of safety strap.
In the preloading device of above-mentioned embodiment of the present utility model, can make from the central axis of the above-mentioned cylinder of the end to end of above-mentioned cylinder linearly.
According to the preloading device of said structure, the central axis of tubular cylinder from the one end to its other end forms linearity.Therefore, with gas generation apparatus is installed on the sidepiece of cylinder, and the gas that produces of gas generation apparatus is compared from the structure of the lateral flows inside of the direction of intersecting with the axis direction of cylinder, it is distolateral that the gas that produces in gas generation apparatus can successfully flow to another of cylinder, and can not be subjected to the bigger interference of cylinder inner wall, and can press piston to the other end thruster of cylinder.
Like this, the gas that is produced in gas generation apparatus can not be subjected to the bigger interference of cylinder inner wall, that is, because there is not very big gaseous tension to act on the inwall of cylinder, so can suppress the direction superior displacement that cylinder intersects to the axis direction with cylinder when gas generation apparatus is worked.
In addition, the preloading device of above-mentioned embodiment can also have: the recess of spill, form at the peripheral part of above-mentioned cylinder, and to the outside opening of above-mentioned cylinder; Restraint device is entering under the state of above-mentioned recess, is fixed on the predetermined position of above-mentioned vehicle, owing to be subjected to the interference of perimembranous in the above-mentioned recess, thus limit the displacement of above-mentioned cylinder.
In having the preloading device of said structure, on the cylinder peripheral part, formed towards the recess of cylinder outside opening, the restraint device that is fixed on the vehicle predetermined position then enters in the recess.
For example, if the vibration during vehicle ', the perhaps gaseous tension during gas generation apparatus work etc. makes cylinder axle line direction superior displacement therein, and then the interior perimembranous of recess will be restricted the interference of device.Like this, just limited the displacement of cylinder, thereby can remain on cylinder on the predetermined installation site.
In above-mentioned embodiment of the present utility model, can also guide part be set in the interior perimembranous of above-mentioned cylinder, guide part is connected on the above-mentioned link, and above-mentioned connecting portion is guided to above-mentioned interconnecting part between above-mentioned piston and above-mentioned interconnecting part side.
In having the preloading device of said structure, be formed with recess at the peripheral part of cylinder, and the restraint device that is fixed on the predetermined position of vehicle enters in the recess to the cylinder outside opening.
For example, if the vibration during vehicle ', the perhaps gaseous tension during gas generation apparatus work etc. makes cylinder axle line direction superior displacement therein, and then the interior perimembranous of recess will be restricted the interference of device.Like this, just limited the displacement of cylinder, and can remain on cylinder on the predetermined installation site.
Also have, in having the preloading device of said structure, a part that makes above-mentioned cylinder between above-mentioned piston and above-mentioned interconnecting part is out of shape to the central axis side, the peripheral part of the above-mentioned cylinder of this crushed element as above-mentioned recess, the interior perimembranous of the above-mentioned cylinder of this crushed element as above-mentioned guide part.
In having the preloading device of said structure, the part of cylinder is out of shape between piston and interconnecting part to the central axis side.In strained like this part, the outer circumferential side of cylinder is the spill towards the cylinder outside opening, and the interior Zhou Ze of cylinder is the shape that bloats to the central axis side.
In preloading device of the present utility model, in strained like this part, the periphery of cylinder can be used as the recess that restraint device is entered, and the interior week of cylinder then can be as the guide part that link is guided to interconnecting part.
Like this, a part (position) distortion by making the cylinder periphery just can form above-mentioned recess and guide part, thereby can reduce machining period.And, in fact just passable as long as the part of cylinder shriveled (Collapse The), so process also than being easier to.
Also have, the preloading device of above-mentioned embodiment, can also have first distance member, first distance member is arranged between the end and above-mentioned piston of above-mentioned cylinder, near above-mentioned interconnecting part, the space that above-mentioned link passed through, the space of passing through with the gas that is produced and flowed to above-mentioned piston by the above-mentioned gas generation device separates.
Preloading device according to said structure, by means of first distance member that is arranged between cylinder one end and the piston, just can be near interconnecting part, link passed through towards the space of interconnecting part, the space of passing through with the gas that is produced and flowed to above-mentioned piston by the above-mentioned gas generation device separates.
That is, in preloading device of the present utility model, the gas that produces in gas generation apparatus returns after just must walking around first distance member than the more close piston side of interconnecting part when interconnecting part spills again.Therefore, can be suppressed at after the firm work of gas generation apparatus, the gas that is produced in the gas generation apparatus leaks out from interconnecting part, thereby gaseous tension can act on the piston effectively.
In addition, in the preloading device of above-mentioned embodiment, can the interior perimembranous of above-mentioned cylinder and these two part upper sheds of peripheral part and above-mentioned cylinder axis to the notch part of an end upper shed as above-mentioned interconnecting part.
In having the preloading device of said structure, the interconnecting part by link cylinder axis to an end upper shed.Like this, when the assembling preloading device, link is passed through in the process of interconnecting part, for example, link from cylinder axis to the state that extracts to the outside of an end under, by making link, just can make link pass through interconnecting part at an easy rate to interconnecting part lateral bending song.Like this, just can improve the work efficiency that makes link pass through the operation of interconnecting part.
Preloading device with said structure, can also have second distance member, second distance member can pass through above-mentioned link, and between above-mentioned interconnecting part and above-mentioned piston, above-mentioned cylinder interior is separated, and restriction is leaked to above-mentioned interconnecting part side to the gas of above-mentioned piston side supply.
According to preloading device, at cylinder inside, between piston and interconnecting part, separated, and be supplied between this second distance member and the piston by the gas that gas generation apparatus produced by second distance member with said structure.By gas being supplied between second distance member and the piston, press liter between second distance member and the piston, thereby piston is slided, second distance member restriction gas is from the leakage than the more close interconnecting part side of second distance member.
Therefore, in the inner space of cylinder, as long as the gas that piston is slided is supplied between the piston and second distance member just passable, the gas of being supplied is only reduced be equivalent to volume than the inner space of the more close interconnecting part side of second distance member cylinder.Like this, just can reduce the gas flow that in gas generation apparatus, produces, and can make gas generation apparatus realize miniaturization etc.
In addition, notch part the interior perimembranous of cylinder and peripheral part all opening and above-mentioned cylinder axis to an end upper shed, said structure is used notch part as the situation on the preloading device of above-mentioned interconnecting part under, use second distance member can limit gas effectively to than the more close interconnecting part of second distance member, promptly leak to the notch part side, thereby pass through interconnecting part as notch part, contrast the influence of the gaseous tension generation of the more close piston side of second distance member, to reduce to minimum, perhaps, even as notch part, can not influence gaseous tension to interconnecting part than the more close piston side of second distance member yet.
And, can limit gas effectively to leaking by second distance member than the more close notch part side of second distance member as interconnecting part, so, can do the opening shape of the interconnecting part that comprises above-mentioned notch part very greatly, and can improve the operating efficiency when making link pass through interconnecting part.
In having the preloading device of said structure, can also become with respect to the central axis of above-mentioned cylinder on the position of parallel linearity at the above-mentioned link of above-mentioned cylinder interior, above-mentioned second distance member is set.
According to preloading device with said structure, first distance member is arranged in the inside of cylinder, and on the position that is furnished with this first distance member, link is parallel linearity with respect to the cylinder axis axis, and this link is by second distance member.Like this, second distance member is in cylinder interior, and link is linearly by this second distance member, thereby under the state that link is passed, can guarantee and cylinder in air-tightness between the perimembranous, and can also easily be installed in cylinder interior to second distance member.
In having the preloading device of said structure, can also be in the interior perimembranous of above-mentioned cylinder, form the location division, the location division from above-mentioned cylinder axis to distolateral being connected on above-mentioned second distance member, and limit above-mentioned second distance member to above-mentioned cylinder axis to other end side shifting.
In having the preloading device of said structure, be formed with the location division in the interior perimembranous of cylinder.For example, in assembling during this preloading device, second distance member from cylinder axis to an end embed cylinder interior, be connected on the location division by second distance member, just can know that second distance member has arrived the installation site of being scheduled to of cylinder interior.That is, when being installed in second distance member in the cylinder,, be connected on the location division, like this, just can reduce the assembling man-hour of this preloading device up to it as long as simply second distance member is pushed to cylinder inside.
In addition, in the utility model, can in cylinder, perimembranous form the location division, so that the second distance member butt thereon, but its concrete embodiment is not special to be limited, for example, can be on more close another axial distolateral desired location than interconnecting part, make cylinder produce plastic deformation, cylinder is shriveled (that is, in the part that forms the location division to its inboard radially, make that the internal diameter size and the outside dimension of cylinder are all little than other parts), thus the location division formed.In the structure that forms the location division in this way, under the state before forming the location division, can promptly be used for cylinder to simple cartridge to existing tubing, therefore have the advantage of energy cost-cutting.
In having the preloading device of said structure, form another distolateral above-mentioned location division that can be connected on the above-mentioned piston from above-mentioned cylinder, be connected on the above-mentioned location division by above-mentioned piston, limit axial one distolateral move of above-mentioned piston to above-mentioned cylinder.
In having the preloading device of said structure, be formed with the location division in the interior perimembranous of cylinder.For example, in assembling during this preloading device, piston from cylinder axis to the other end embed cylinder interior, be connected on the location division by piston, just can know that piston has arrived the installation site that cylinder interior is scheduled to.That is, when being installed in piston in the cylinder,, be connected on the location division, like this, just can reduce the assembling man-hour of this preloading device up to it as long as simply piston is pushed into to cylinder inside.
And, as mentioned above,, therefore just can on cylinder, form piston respectively and use the location division with the location division and second spacer portion because the location division is used for location second distance member.Like this, just can cut down finished cost.
Description of drawings
Fig. 1 is the exploded perspective view of the preloading device of first embodiment of the present utility model;
Fig. 2 is the orthogonal view of the preloading device of first embodiment of the present utility model;
Fig. 3 is the sectional side view of the preloading device of first embodiment of the present utility model;
Fig. 4 comprises the preloading device of first embodiment of the present utility model and the block diagram of the seat safety belt apparatus that constitutes;
Fig. 5 is the exploded perspective view of the preloading device of second embodiment of the present utility model;
Fig. 6 is the orthogonal view of the preloading device of second embodiment of the present utility model;
Fig. 7 is the block diagram of first distance member (diffuser);
Fig. 8 is the sectional side view of the preloading device of second embodiment of the present utility model;
Fig. 9 is the exploded perspective view of the preloading device of the 3rd embodiment of the present utility model;
Figure 10 is the orthogonal view of the preloading device of the 3rd embodiment of the present utility model;
Figure 11 is the exploded perspective view of the preloading device of the 4th embodiment of the present utility model;
Figure 12 is the orthogonal view of the preloading device of the 4th embodiment of the present utility model;
Figure 13 sees from an axial side of cylinder, the block diagram of first distance member (diffuser) and second distance member (central plug);
Figure 14 sees from the axial opposite side of cylinder, the block diagram of second distance member (central plug).
The specific embodiment
[structure of first embodiment]
Fig. 1 is the exploded perspective view of preloading device 10 structures of first embodiment of the present utility model, and Fig. 2 is the section-drawing of the structure of expression preloading device 10 of the present utility model.
Shown in these two figure, preloading device 10 of the present utility model has cylinder 12.Cylinder 12 is along the roughly fore-and-aft direction setting of vehicle, by being cut into suitable length, cylindrical shape tubing (straighttube part) forms, above-mentioned cylindrical shape tubing for example is carbon steel steel pipe or stainless-steel pipe etc., and its mechanical strength than higher and central axis linearly.
One distolateral (being roughly vehicle front side) at cylinder 12 is provided with the gas producer 14 as gas generation apparatus.Gas producer 14 has main body 16.Part or all of main body 16 made cylindrical, and its outside dimension is less than the internal diameter size of cylinder 12.
In the inside of main body 16, contain moment to produce the gas producing agent of gas by burning, and the fire lighter etc. that is used to the gas producing agent igniting.The structure of main body 16 is such: main body 16 in-to-in fire lighters are lighted a fire to gas producing agent, and when gas producing agent burnt, just from the end ejection of main body 16, gas was sent to the inside of cylinder 12 to the gas that moment produces.
In addition, in the present embodiment, its structure is to make the gas producing agent burning by above-described fire lighter, and in gas producer 14, produce gas, but, at gas producer 14 (promptly, the mechanism of the generation gas gas generating unit) is not to only limit to this structure.Gas producer 14 (that is, gas generating unit) also can use the small-sized gaholder that pressure gas is encapsulated in the inside so long as to produce the structure of gas in the chemical reaction of some kinds of chemical substances just passable.
In addition, in main body 16, be positioned on the part in the outside of cylinder 12, formed flange part 18.Flange part 18 is discoideus, and forms as one coaxially with main body 16, and the outside dimension of flange part 18 is greater than the internal diameter size of cylinder 12, and less than the outside dimension of cylinder 12.
In addition, the end at cylinder 12 is provided with lid 20.Lid 20 forms the cylindrical shape at the end, and its internal diameter size is set at that roughly the outside dimension with cylinder 12 is identical.Interior perimembranous at lid 20 is formed with negative thread 22.Corresponding with this negative thread 22, at one of cylinder 12 distolateral peripheral part, be formed with outside thread 24 as installation portion.
When outside thread 24 is screwed on negative thread 22, the bottom that makes lid 20 is during near an end of cylinder 12, and its bottom just pushes gas producer 14, flange part 18 is compressed and is fixed on the end of cylinder 12.
On the bottom of lid 20, be formed with the internal diameter size through hole 28 more much smaller than the outside dimension of gas producer 14, the electric connection line of lead of not representing among the figure and so on passes through hole 28, is connected on the gas producer 14.On the control setup of ECU that this connection lead connection is not represented in the drawings and so on, when the acceleration pick-up on being loaded in vehicle etc. detected vehicle abrupt deceleration state, control setup just made gas producer 14 work.
On the other hand, on the pars intermedia of the axis direction of cylinder 12, be formed with fairlead 30 as interconnecting part.One end of fairlead 30 is in the peripheral part upper shed of cylinder 12, and its other end is in the interior perimembranous upper shed of cylinder 12.In addition, one end of fairlead 30 (promptly, open end on the peripheral part of cylinder 12) (promptly with respect to the other end, open end on the interior perimembranous of cylinder 12), to distolateral staggering along the axis direction of cylinder 12, therefore, the direction that fairlead 30 runs through to an end from the other end, with respect to the direction of the axis direction quadrature of cylinder 12 (below, for simplicity, claim that the direction of the axis direction quadrature of this and cylinder 12 is " an orthogonal axe direction "), to a distolateral inclination of the axis direction of cylinder 12.
Also have, another the distolateral position than fairlead 30 more close cylinders 12 is provided with piston 32.The outside dimension of piston 32 is littler than the internal diameter size of cylinder 12, and the peripheral part at the pars intermedia of its axis direction is formed with annular recess portion 34.In this concave part 34, embedded the O-ring seals 36 as sealing element (O shape ring) that forms ring-type with synthetic resin that can elastic deformation.
The O-ring seals 36 that embeds in the concave part 34 closely is crimped on the interior perimembranous of cylinder 12, by O-ring seals 36, cylinder 12 one distolateral and another seal between distolateral.In addition, as an end fastening of the steel rope 38 of link that can deflection substantial middle towards one of cylinder 12 distolateral end at piston 32.
Another of steel rope 38 is distolateral pass fairlead 30 after, be introduced to the outside of cylinder 12, and then as shown in Figure 4, the other end of steel rope 38 is fixed on the bracelet 42, bracelet 42 is as the support that constitutes body-restraining seat belt devices 40.
Because seat safety belt apparatus 40 is known technologies, do not describe in detail at this, only illustrate as follows simply:, be provided with above-mentioned bracelet 42 near the ground board of the side (inboard, compartment) at the seat 44 of left and right vehicle wheel direction; Middle across seat 44, near the ground board of a side opposite, be provided with the Webbing take-up device 46 that is called as constrictor etc. with bracelet 42.
On Webbing take-up device 46, be provided with axis direction roughly along the spool 48 of the fore-and-aft direction of vehicle.The long ribbon shape safety strap 50 of base end part fastening on spool 48 roughly drawn to the vehicle top.Near roof panel for vehicle portion, be provided with fixedly belt loop 52 of pass-through mode, safety strap 50 is turned back to the below of vehicle passing pass-through mode fixedly on the belt loop 52 after the formed narrow slit 54.
The terminal part of safety strap 50 is on anchor plate 56 on the vehicle body is being fixed near the fastening Webbing take-up device 46.In addition, fixedly between the belt loop 52, hyoplastron 58 is installed on the safety strap 50, and can move along safety strap 50 in specialized range at anchor plate 56 and pass-through mode.
Be sitting in the occupant on the seat 44, hold hyoplastron 58, when hyoplastron 58 was pulled to bracelet 42 1 sides, the safety strap 50 that is wound on the spool 48 of Webbing take-up device 46 was drawn out, if and when being assemblied in hyoplastron 58 in the bracelet 42, hyoplastron 58 is held by bracelet 42.
Like this, safety strap 50 just is in the state that ties up on occupant's health, and than the safety strap of the base end side of hyoplastron 58 more close safety strap 50, constraint occupant's belly is to shoulder, fetters occupant's waist than the safety strap of the front of hyoplastron 58 more close safety strap 50.
On the other hand, as depicted in figs. 1 and 2, between above-mentioned fairlead 30 and piston 32, on cylinder 12, formed variant part 70.Variant part 70 forms on cylinder 12 like this, that is, and and under the state that cylinder 12 is arranged on the vehicle predetermined position, make its part towards the vehicle top, and with the direction of the orthogonal axe of cylinder 12 on, the axis side distortion to cylinder 12 forms variant part 70 thus.
The plane of bending of guide part 72 is arranged to, and is for example, identical with the axis direction (perforation direction) of fairlead 30 in a tangential direction on distolateral of cylinder 12.Above-mentioned steel rope 38 is connected on the guide part 72, and with the state of nature relatively (promptly according to the plane of bending of guide part 72, can not change the direction of steel rope 38 sharp) towards fairlead 30, and be not subjected to the excessive interference of open end edge of the fairlead 30 of cylinder 12 inboards.
On the other hand, on the orthogonal view of cylinder 12, the variant part 70 on the peripheral part of cylinder 12 bends to, and with the desired location in the outside of the cylinder 12 circular arc opening as center of curvature, at the outer circumferential side of cylinder 12, variant part 70 has constituted recess 74.In the inboard of this recess 74, be provided with block 76.
Like this, when screwing in screw 82, just limited the displacement of block 76 to hold-down bolt 78 along the axis direction of cylinder 12.Therefore, when cylinder 12 during in the displacement of its axis direction, the interior perimembranous of recess 74 just can be subjected to the interference of block 76.Like this, just formed the structure of restriction cylinder 12 displacements.
[effect of first embodiment and effect]
In the seat safety belt apparatus 40 that the preloading device 10 that contains present embodiment constitutes, the occupant who is sitting on the vehicle seat 44 pulls out safety strap 50, simultaneously on health, and a hyoplastron 58 that is arranged on the safety strap 50 is assemblied on the bracelet 42, safety strap 50 just ties up on occupant's the health, and safety strap 50 applies occupant's health bundle live.
In this state, for example, when the acceleration pick-up that is used for preloading device 10 detected the vehicle that travels and is in the abrupt deceleration state, the gas producing agents in the gas producer 14 were just lighted by fire lighter.The gas producing agent that burns because of igniting is just producing the gas of specified amount in a flash.
The gas that produces in gas producer 14 is supplied to the inside of cylinder 12, and like this, the interior pressures in the cylinder 12 just sharply rise.Owing to press liter in the cylinder 12, so piston 32 slides to the axis direction other end side of cylinder 12 just.
When piston 32 when the other end side of the axis direction of cylinder 12 is slided, just spurs an end and be connected steel rope 38 on the piston 32, and then pulling is connected another of steel rope 38 bracelet 42 on distolateral, move it.
As mentioned above, owing to hyoplastron 58 is assemblied in the bracelet 42, thereby by pulling bracelet 42, just can strain hyoplastron 58, and then tighten seat belt 50, when eliminating safety strap 50 only point relaxations (i.e. so-called " gap "), improve the constrained force of 50 pairs of occupant's healths of safety strap.
Like this, when vehicle is a significant slowdown, can keep the occupant's that will move as health from inertia to roughly the place ahead of vehicle effectively.
At this moment, in the preloading device 10 of present embodiment, steel rope 38 and guide part 72 moving contacts, guide part 72 form with the direction of the orthogonal axe of cylinder 12 on heave to the inside, steel rope 38 is directed to portion 72 guiding and towards pilot hole 30, thus steel rope 38 to be subjected to the interference of the edge part of fairlead 30 on interior all sides of cylinder 12 very little.Thereby, in cylinder 12, press liter, when piston 32 took place to slide, also tense wire rope 38 successfully furthered bracelet 42.
In addition, as mentioned above, in the preloading device 10 of present embodiment,, be formed on the pars intermedia of the axis direction of cylinder 12 the fairlead 30 that the steel rope 38 that is used to connect piston 32 and bracelet 42 pulls out laterally from the inboard of cylinder 12.Therefore, even the linearly cylinder 12 of central axis also can be installed in gas producer 14 its end.
In other words, in this way gas producer 14 is installed in an end of cylinder 12, so can make the simple shapeization of cylinder 12, the result just can use axis to make cylinder 12 as the ready-made tubing (tubular part) of straight line.Therefore, just can produce preloading device 10 with low cost.
In addition, by using existing tubing (tubular part), the energy cost-cutting is compared with the cylinder that forms by the casting forming magnesium alloy, and the mechanical strength of the tubular part of this corrosion-resistant steel or carbon steel is than higher.Therefore, for example, even do thinlyyer than the cylinder that forms by the casting forming magnesium alloy, also can fully guarantee its mechanical strength to the wall of cylinder 12, the result just can realize the miniaturization and the lightweight of cylinder 12.
In addition, in preloading device in the past, because its structure is that the end of steel rope from cylinder extracted, so will be arranged on gas producer the sidepiece of cylinder outer circumferential side.In contrast, in the preloading device 10 of present embodiment, because gas producer 14 is installed in an end of cylinder 12,, the integral body of preloading device 10 can be diminished so can reduce the size of the preloading device 10 on crisscross with the central axis of cylinder 12.
Like this, even in the compartment, and near the very narrow space seat 44, also can guarantee the space that is provided with of preloading device 10 of the present utility model at an easy rate.
In addition, as mentioned above, in the structure in the past on the sidepiece that gas producer is arranged on the cylinder outer circumferential side, the gas that ejects from gas producer is after bumping against the interior perimembranous of cylinder 12, and change of direction is towards plug-flow.Relative therewith, in the preloading device 10 of present embodiment, because the axis of cylinder 12 is linearly, so the gas producer 14 that is installed on the end of cylinder 12 is relative with piston 32.
Therefore, the gas that ejects from gas producer 14 except to the cylinder 12 inboard guide parts 72 that protrude, can not be subjected to the very big interference of the interior perimembranous of cylinder 12 all towards piston 32.When gaseous tension can act on the piston 32 efficiently, can also suppress the displacement of the cylinder 12 that causes owing to gaseous tension.
Also have, as mentioned above,,, can then can be used as the guide part 72 of steel rope 38 guiding in the inboard of cylinder 12 as the recess 74 that block 76 is installed in the outside of cylinder 12 by the formed place's variant part 70 of a part that shrivels cylinder 12.Like this, only, just can form structure, thereby can cut down finished cost with difference in functionality by a position is processed.
[second embodiment]
Then, other embodiment of the present utility model is described.Below explanation during each embodiment, illustrated essentially identical position in every and above-mentioned first embodiment is marked with identical label, and omits its detailed description.
Fig. 5 is the exploded perspective view of structure of the preloading device 110 of second embodiment of the present utility model; The section-drawing of having represented the structure of this preloading device 110 among Fig. 6.Shown in this two width of cloth accompanying drawing, the central axis of the cylinder 12 of the preloading device 110 in the present embodiment towards opposite with preloading device 10 in above-mentioned first embodiment, cylinder 12 one distolateral roughly towards the rear of vehicle, and another is distolateral roughly towards the place ahead of vehicle.
In addition, the preloading device 110 in the present embodiment has the block 112 as limiting means, to replace block 76.Block 112 has base portion 114.
But, different with the block 76 in above-mentioned first embodiment, under half-round 116 entered state in the recess 74, in half-round 116 sides, base portion 114 was connected on the peripheral part of cylinder 12.In addition, along on the end of the base portion 114 of the axial side of cylinder 12, formed guide part 118.
The curvature that the peripheral part of guide part 118 bends to regulation outwards bloats, its radius of curvature roughly radius of curvature with guide part 72 is identical, the steel rope 38 of drawing from fairlead 30 is connected on the peripheral part of guide part 118, and according to the peripheral part bending of guide part 118.Like this, in the present embodiment, the front of steel rope 38 is just extended to another distolateral (piston 32 sides) of cylinder 12 axis directions.
In addition, the preloading device in the present embodiment 110 has the whole carriage made from resilient sheet metal 120.As shown in Figure 5 and Figure 6, carriage 120 has ring part 122.
Between two flat parts 124, clip block 112, hold-down bolt 78 passes block 112 and two flat parts 124.Like this, block 112 just is held and is fixed on the flat part 124, and cylinder 12 then is held and is fixed on the ring part 122.
Also have, as shown in Figure 5 and Figure 6,, extend margining tablet 126 to another flat part 124 from a flat part 124 and ends guide part 118 corresponding parts.Margining tablet 126 is oppositely arranged with the peripheral part of guide part 118, and steel rope 38 passes through between margining tablet 126 and guide part 118.
Act on the steel rope 38 as unexpected external force, when making steel rope 38 will leave the peripheral part of guide part 118, margining tablet 126 is interfered steel rope 38, and restriction steel rope 38 leaves from the peripheral part of guide part 118.
On the other hand, as shown in Figure 6, the preloading device 110 of present embodiment also has the diffuser 130 as isolated part.As shown in Figure 7, diffuser 130 has columnar portion 132.Columnar portion 132 forms its outside dimension than slightly little cylindrical of the internal diameter size of cylinder 12.From the axial side of columnar portion 132, be formed with guide part 134 continuously.
Also have, the substantial middle at the Width of spigot surface 136 is formed with direction recess 138.Direction recess 138 is with the curvature bending roughly the same with the curvature of spigot surface 136, and steel rope 38 embeds wherein.Steel rope 38 is by direction recess 138 guiding and towards fairlead 30.
In the diffuser 130 that is constituted by above-mentioned columnar portion 132 and guide part 134, be formed with air channel 140.Upwards be formed with a plurality of air channels 140 in the week of columnar portion 132, distolateral at cylinder 12, each air channel 140 is at the end face opening of columnar portion 132, and is distolateral at another of cylinder 12, in the end face upper shed of guide part 134.That is, in the present embodiment, though the inboard of diffuser 130 embedding cylinders 12, an end of cylinder 12 is communicated with by air channel 140 with the other end.
[effect of second embodiment and effect]
In the preloading device 110 of present embodiment, when gas producer 14 work, and in a flash from gas producer 14 during to the inboard jet gas of cylinder 12, gas just by the air channel 140 of diffuser 130, flows to piston 32.Like this, when pressing in the cylinder 12 when rising, piston 32 just slides to the other end side of cylinder 12, then just tense wire rope 38, and then tension bracelet 42.
The preloading device 110 of present embodiment has and the identical effect of preloading device 10 in above-mentioned first embodiment in work basically, and the result just can obtain the effect identical with the preloading device 10 of above-mentioned first embodiment.
In addition, the structure of the preloading device 110 of present embodiment is as follows: use central axis linearly, and the intermediate portion is formed with the cylinder 12 of variant part 70, and the one end is equipped with gas producer 14, and said structure is identical with preloading device 10 in above-mentioned first embodiment.Therefore, said structure plays and the identical effect of preloading device 10 in above-mentioned first embodiment.As a result, can obtain the effect same with the preloading device 10 of above-mentioned first embodiment.
, in the inboard of cylinder 12 is provided with preloading device 110 in the present embodiment of diffuser 130, will be from the gas that gas producer 14 ejects by the air channel 140 of diffuser 130.
At this moment, the inboard of air channel 140 (that is, the space that gas passed through) and steel rope 38 by and the space that is communicated with fairlead 30, be spaced by diffuser 130.Therefore, the gas from gas producer 14 ejects if do not walk around the front end of guide part 134, just can not flow in the fairlead 30 and go.
Yet, because the flow direction of the gas by air channel 140 is another distolateral (that is, a side of piston 32) towards cylinder 12, so, gas because of its flow direction not can the front end of guide part 134 sharp change of direction flow to fairlead 30.
Like this, even the sizes of not strict control fairlead 30 etc. perhaps are not provided with the sealing element of seal liner and so in fairlead 30, after gas producer 14 work, can prevent effectively that also gas from spilling from fairlead 30, the pressure of gas can make piston 32 slide efficiently.
In addition, in the present embodiment, guide part 134 is set in diffuser 130, and the structure that in direction recess 138, steel rope 38 is led, on the script function of diffuser 130, as long as diffuser 130 has following structure: separate and be communicated with the space that fairlead 30 passes through space that steel rope 38 passes through and gas,, steel rope 38 is directed to the function that fairlead 30 goes and can not have the side of gas channeling than fairlead 30 more close pistons 32.
[structure of the 3rd embodiment]
Below, the 3rd embodiment of the present utility model is described.
Fig. 9 is the exploded perspective view of structure of the preloading device 150 of the 3rd embodiment of the present utility model, and Figure 10 is a structure of representing present embodiment preloading device 150 with section-drawing.As Fig. 9 and shown in Figure 10, the preloading device 150 usefulness cylinders 152 of present embodiment replace cylinder 12.The same with the cylinder 12 of preloading device 10 in above-mentioned first embodiment, cylinder 152 one distolateral, and its another distolateral roughly rear towards vehicle in roughly the place ahead of vehicle.
But, different with cylinder 12, on axial another of cylinder 152 is distolateral, be formed with necking part 154.Necking part 154 is along with distolateral near axial another of cylinder 152, its outside dimension and internal diameter size are diminishing, end at necking part 154, promptly, on axial the other end of cylinder 152, its internal diameter size is little more a lot of than the outside dimension of piston 32, no matter is before 150 work of this preloading device or under any state after the work, piston 32 all can not be pulled out from axial the other end of cylinder 152.
In addition, in the present embodiment, between an end of the flange part 18 of gas producer 14 and cylinder 152, clip the baffle ring 153 of ring-type.The outside dimension of baffle ring 153 is bigger than the internal diameter size on the end of cylinder 152, but littler than the outside dimension of an end of cylinder 152.In addition, the internal diameter size of baffle ring 153 is littler than the outside dimension of flange part 18, but bigger than the internal diameter size on the end of cylinder 152, and bigger than the outside dimension of the main body 16 of gas producer 14.
As shown in figure 10, by such baffle ring 153 is set, even the outside dimension of flange part 18 less than the internal diameter size of an end of cylinder 152, flange part 18 also can not enter into the inside of cylinder 152.
On the other hand, as shown in Figure 9, more close another the distolateral position of an end more axial than cylinder 152 is formed with the through hole 156 as interconnecting part, to replace fairlead 30.Through hole 156 forms more much biggerly than fairlead 30.In addition, fairlead 30 form with respect to the direction of the orthogonal axe of cylinder 12, to a distolateral inclination of axis direction, but, as shown in figure 10, through hole 156 be with the direction of the orthogonal axe of cylinder 12 on run through.In addition, in the present embodiment, though make through hole 156 with the orthogonal axe direction of cylinder 12 on run through,, for example the same with fairlead 30, also can allow connect direction and tilt.That is, different with fairlead 30, have no particular limits for the perforation direction of through hole 156, in addition, its setting there is not strict restriction yet.
In addition,, on the axial other end side position than through hole 156 more close cylinders 152, be formed with variant part 158, to replace variant part 70 as Fig. 9 and shown in Figure 10.Variant part 158 is different with the variant part 70 that forms circular arc, and from the front, variant part 158 is roughly stepped.But, though the shape of variant part 158 is different with variant part 70, basic identical on function with variant part 70.
In addition, on cylinder 152, be provided with and through hole 156 cooresponding steel rope guidess 160.Steel rope guides 160 has base portion 162.Base portion 162 forms tabular, and on the position that is formed with through hole 156, with along the radial direction of cylinder 152 as thickness direction.For example, base portion 162 is in formation variant parts 158 such as drawings, is shaped with variant part 158, and like this, just as shown in figure 10, base portion 162 just is out of shape according to interior all shapes of the recess on the variant part 158 74.
In the side of the distolateral base portion 162 of cylinder 152 axial, formed the heavy section 164 thicker than base portion 162.In addition, below heavy section 164, be formed with guide cylinder 166.
Steel rope guides 160 in the installing condition on the cylinder 152 is: base portion 162 is connected on the recess 74, is connected on the outer peripheral face of cylinder 152 around the heavy section 164.As shown in figure 10, under this installing condition, guide cylinder 166 passes through hole 156, and the front of guide cylinder 166 enters the inside of cylinder 152.On guide cylinder 166 and heavy section 164, fairlead 30 cooresponding fairleads 168 have been formed with above-mentioned first embodiment.The internal diameter size of fairlead 168 is bigger slightly than the external diameter of steel rope 38, and steel rope 38 passes the inside of fairlead 168.
On the other hand,,, be provided with diffuser 170, to replace diffuser 130 as first isolated part in the inboard of cylinder 1 52 as Fig. 9 and shown in Figure 10.Diffuser 170 has cylindrical portion 172.The outside dimension of cylindrical portion 172 is more a little bit smaller slightly than the internal diameter size of cylinder 152, diffuser 170 is being arranged under the cylinder 152 in-to-in states, cylindrical portion 172 from an end of cylinder 152 be set to through hole 156 cooresponding positions on, and gas producer 14 is contained in its inboard.
Than distolateral with axial another of cylindrical portion 172 more close cylinders 152, be formed with the guide part 174 continuous with cylindrical portion 172, it has sealed cylindrical portion 172 the other end on axial another of cylinder 152 is distolateral.Basically the same with guide part 134 in second embodiment, guide part 174 is formed with spigot surface 136 and direction recess 138.
But, different with the direction recess 138 of guide part 134, steel rope 38 is not directly to enter in the direction recess 138 of guide part 174, but allow guide cylinder 166 enter in the direction recess 138, as shown in Figure 9, if under the state before guide cylinder 166 enters cylinder 152 inboards, even the central axis of this guide cylinder 166 is linearly, as shown in figure 10, entering at guide cylinder 166 under the state in the direction recess 138 of cylinder 152 inboards, guide cylinder 166 is just along direction recess 138 bendings.
In addition, as shown in Figure 9, on guide part 174, formed a pair of air extractor vent 176.The section form of air extractor vent 176 is crooked, and the extended line (omitting among the figure) of showing the central axis of cylindrical portion 172 greatly is a center of curvature, and in the two ends upper shed of the guide part 174 on the axis direction of cylinder 152.These two air extractor vents 176 play the effect identical with the air channel that forms 140 in the above-described 2nd embodiment the guide part 134, and the gas that sprays to the inboard of cylinder 12 from gas producer 14 is by flowing to piston 32 behind the air extractor vent 176.
In addition, as shown in Figure 9, the preloading device 150 of present embodiment has the block 178 as restraint device, in order to replace block 112.Block 178 does not have half-round 116, but has end difference 180.But, this is because in second embodiment, the shape in the interior week of recess 74 is semicircle, and in the present embodiment, the shapes in week roughly are stepped appearance in the recess 74, thereby replaces half-round 116 with end difference 180.
In addition, on the base portion 114 of block 178, be formed with clamping piece 182.As shown in figure 10, the part of the outer surface of clamping piece 182, according to enter the curvature bending that cylinder 152 inboards are the guide cylinder 166 of case of bending from through hole 156, end difference 180 enters in the recess 74, clamping under the state of base portion 162 by end difference 180 and recess 74, clamping piece 182 enters cylinder 152 inboards from through hole 156, compresses guide cylinder 166.Like this, push down base portion 162, compress guide cylinder 166, thereby keep guide cylinder 166 securely with clamping piece 182 with end difference 180.
On the other hand, as shown in Figure 9, the preloading device 150 of present embodiment has carriage 184, to replace carriage 120.Carriage 184 has a pair of axis direction ring part 122 opposite one another along cylinder 152.One flat plate 124 is connected on the circumferential end of this two ring parts 122, another piece dull and stereotyped 124 then is connected on the circumferential other end of this two ring parts 122 (promptly, two ring parts 122 connect into an integral body by dull and stereotyped 124, and on same axis).The same with second embodiment, between two flat boards 124, clip block 178.
Also have, between two flat boards 124, be provided with limiting pin 186.This limiting pin 186 is arranged near the axial distolateral flat board 124 of cylinder 152.Limiting pin 186 is the parts that are used for replacing the margining tablet 126 in above-mentioned second embodiment, and limiting pin 186 prevents that by the interference to steel rope 38 steel rope 38 from producing unnecessary deflection.
[effect of the 3rd embodiment and effect]
In the preloading device 150 of present embodiment, when gas producer 14 work, and in a flash, when the inboard jet gas of cylinder 152, gas just by the air extractor vent 178 of diffuser 170, flows to piston 32 from gas producer 14.Like this, when pressing in the cylinder 152 when rising, piston 32 just slides to the other end of cylinder 152, then just tense wire rope 38, and then tension bracelet 42.
Like this, the preloading device 150 of present embodiment plays basically and the identical effect of preloading device 10 in above-mentioned first embodiment in work, and the result just can obtain the effect identical with the preloading device 10 of above-mentioned first embodiment.
In addition, the preloading device 150 of present embodiment, also use central axis linearly and therebetween portion be formed with the cylinder 152 of variant part 158, at the one end gas producer 14 has been installed, these structures are identical with preloading device 10 in above-mentioned first embodiment.Therefore, these structures also play and the identical effect of preloading device 10 in above-mentioned first embodiment.As a result, can obtain the effect identical with the preloading device 10 of above-mentioned first embodiment.
, in the inboard of cylinder 152 is provided with preloading device 150 in the present embodiment of diffuser 170, will be from the gas that gas producer 14 ejects by the air channel 140 of diffuser 170.
As mentioned above, in the present embodiment, there is no particular limitation for the perforation direction of through hole 156, in addition, also do not have strict qualification for its setting.But, by allowing steel rope 38 pass to run through the guide cylinder 166 of the steel rope guides 160 of this through hole 156, just can make steel rope 38 gently crooked, moving sliding in state of can not being interfered.
Like this, in the present embodiment, by steel rope guides 160 is set, the perforation direction of limited hole 156 especially strictly just, thus improved the processing characteristics of cylinder 152.
[structure of the 4th embodiment]
Below, the 4th embodiment of the present utility model is described.
Figure 11 is the exploded perspective view of structure of the preloading device 210 of the 4th embodiment; Figure 12 is a structure of representing present embodiment preloading device 210 with section-drawing.
As Figure 11 and shown in Figure 12, the preloading device 210 of present embodiment has cylinder 212, in order to replace cylinder 12.On the cylinder 12 of preloading device 10 in the above-described first embodiment, on near the peripheral part that is equipped with the side end of gas producer 14, be formed with outside thread 24, in contrast, on the cylinder 212 of the preloading device 210 of present embodiment, on near the peripheral part that is equipped with gas producer 14 1 side ends, do not form outside thread 24.
In addition, the preloading device 210 of present embodiment has lid 214, in order to replace lid 20.What lid 214 formed through hole 28 on the bottom has a round-ended cylinder shape, this point is identical with the lid 20 of above-mentioned first embodiment, but on the interior perimembranous of lid 20, be formed with negative thread 22, relative therewith, in the lid 214 of the preloading device 210 of present embodiment, on interior perimembranous, do not form negative thread 22.
Promptly, preloading device 210 in present embodiment has following structure: under the state that gas producer 14 is embedded from cylinder 212 axial ends the cylinder 212, when lid 214 being entrenched in axial distolateral the going up of cylinder 212, lid 214 is carried out " ca(u)lk processing ", thereby lid 214 is fixed on the cylinder 212.
On the other hand, on cylinder 212, formed variant part 216.Variant part 216 for example, is to pressurize by the part to the periphery of columnar cylinder 212, makes it produce plastic deformation, a part of periphery of cylinder 212 is shriveled form.Compare with the part that does not form variant part 216 on cylinder 212, variant part 216 is positioned at the inboard of the radial direction of cylinder 212.
In addition, variant part 216 has flat part 218.The outside face of the cylinder 212 of flat part 218 is the plane parallel with the central axis of cylinder 212 with inside face.Be formed with curve 220 continuously from axial one the end of flat part 218 on distolateral of cylinder 212.Inside face on the curve 220 and outside face are center of curvature with the desired location in cylinder 212 outsides, along with near the axial end of cylinder 212, gradually to the lateral displacement of cylinder 212 radial directions.At least a portion of the spigot surface 136 of diffuser 130 is connected on the inside face of this curve 220.
Than curve 220 more close cylinders 212 axial one distolateral on, on cylinder 212, be formed with notch part 222.Notch part 222 has and the fairlead 30 corresponding structures that form on the cylinder 12 of the preloading device 10 of above-mentioned first embodiment.Therefore, the same with fairlead 30 as 11 and shown in Figure 12, notch part 222 is in interior perimembranous and these two part upper sheds of peripheral part of cylinder 212, and steel rope passes through at this notch part 222.But different with fairlead 30, notch part 222 is axially longer along cylinder 212, also has, and notch part 222 opens wide in an axial end of cylinder 212.
In addition, as 11 and shown in Figure 12,,, arranged central stopper 224 as second isolated part in the inside of cylinder 212 more distolateral than another of diffuser 130 more close cylinders 212.In the present embodiment, central stopper 224 all is to use elastomeric material, has perhaps that elastomeric synthetic resin as the elastomeric material forms.But, having the elasticity as the elastomeric material, is not the necessary condition of central stopper 224, and therefore, the material that constitutes central stopper 224 is not limited in elastomeric material or has elastomeric synthetic resin as the elastomeric material.
Central authorities' stopper 224 has large-diameter portion 226.The shape of large-diameter portion 226 is corresponding with interior all shapes of the cylinder 212 that forms flat part 218, that is, section form is the shape of a part of straight cuts of circle.The peripheral part of large-diameter portion 226 is configured to be connected to the state on interior week of the cylinder 212 that is formed with flat part 218 parts, perhaps, is configured to the parts with respect to week in the cylinder 212 that is formed with flat part 218 parts, and the centre has minimum some gaps.
As Figure 11, Figure 13 and shown in Figure 14, on large-diameter portion 226, be formed with air extractor vent 228.Air extractor vent 228 axially runs through large-diameter portion 226 along cylinder 212.Diffuser 130 is along the end of the axial opposite side of cylinder 212, is connected on the end face of the large-diameter portion 226 of cylinder 212 axial sides.From the main body 16 of gas producer 14 internal feed to cylinder 212, the gas of the air channel 140 by diffuser 130 further by after the air extractor vent 228, is fed to more distolateral than axial another of central stopper 224 more close cylinders 212.
On the other hand, as Figure 11 and shown in Figure 12, the side along the end face of the large-diameter portion 226 of the axial opposite side of cylinder 212 has formed location division 230 on the interior perimembranous of cylinder 212.Location division 230 is in a side opposite with the curve 220 of flat part 218, makes cylinder 212 form to the inboard plastic deformation of its radial direction.Like this, in the inboard of cylinder 212, protrude to the inboard than the radial direction of the more close cylinder 212 of interior perimembranous of cylinder 212 location division 230.And more protrude to the inside of the radial direction of cylinder 212 than flat part 218 location division 230.As shown in figure 12, large-diameter portion 226 is connected on the location division 230 near the periphery of another axial distolateral end of cylinder 212.
In addition, as Figure 13 and shown in Figure 14, axial one the end of large-diameter portion 226 on distolateral from cylinder 212 is formed with minor diameter 232.The shape of the periphery of minor diameter 232 is littler than large-diameter portion 226.Central authorities stopper 224 and faces flat part 218 opposite sides constituted roughly on a face by large-diameter portion 226 and minor diameter 232, but with the opposition side of flat part 218 opposite sides, minor diameter 232 more are partial to flat part 218 sides than large-diameter portion 226.
The corresponding plane of bending 234 of interior all shapes with the direction recess 138 that forms is made on the surface of minor diameter 232 and flat part 218 opposite sides on guide part 134.Diffuser 130 the end of the axial opposite side of cylinder 21 2 and near part, enter between the interior perimeter surface of plane of bending 234 and cylinder 212.Plane of bending 234 1 sides of minor diameter 232 then embed in the guide groove 138 that is formed on the guide part 134, and plane of bending 234 is connected on the inner peripheral surface of guide groove 138.
Also have,, on central stopper 224, be formed with through hole 236 in a side than air extractor vent 228 more close flat parts 218.Through hole 236 forms, its axis and the central axis of cylinder 212 that does not form variant part 216 and location division 230 parts are roughly on same axis, the one end is in the end face upper shed towards the minor diameter 232 of the axial side of cylinder 212, and the other end is in the end face upper shed towards the large-diameter portion 226 of the axial opposite side of cylinder 212.
The peripheral shape of the shape of the opening of through hole 236 and steel rope 38 is roughly the same, perhaps slightly bigger than the peripheral shape of steel rope 38, on function, steel rope 38 can connect direction along it and successfully move in through hole 236, and, between the interior perimembranous of the peripheral part of steel rope 38 and through hole 236, do not form the gap, perhaps only form very little gap.
[effect of the 4th embodiment and effect]
In the preloading device 210 of present embodiment, when gas producer 14 work, gas in a flash from gas producer 14 when cylinder 212 inboards eject, gas will be by the air channel 140 of diffuser 130.In addition, the gas after the air channel 140 by diffuser 130 by the air extractor vent 228 of central stopper 224, is supplied to the inboard of another the distolateral cylinder 212 more axial than the more close cylinder in location division 230 212.
So, between central stopper 224 and piston 32, pressing liter in the cylinder 212, piston 32 just slides to the other end side of cylinder 212.Like this, slide tense wire rope 38, and then tension bracelet 42 by other end side to cylinder 212.Like this, aspect work, the preloading device 210 of present embodiment plays basically and the identical effect of preloading device 10 in above-mentioned first embodiment, and the result can obtain the effect identical with the preloading device 1 of above-mentioned first embodiment.
In this preloading device 210, axial distolateral by than piston 32 more close cylinders 212 is provided with central stopper 224, keeps the pressure of gas between central stopper 224 and piston 32.But,, also can consider the rubber lid is installed in the fairlead 30 that is formed on the cylinder 12, go to cylinder 12 outsides with the restriction gas leakage as being example with above-mentioned first embodiment.
; the such structure of rubber lid is installed in fairlead 30; because crooked steel rope 38; perhaps to the steel rope 38 that extends with respect to the opening direction bevelled direction of fairlead 30; by fairlead 30; so be difficult in the bubble-tight while of abundant maintenance, the rubber lid be installed on the fairlead 30.And, the rubber lid is set in fairlead 30, in order to keep in the such structure of gaseous tension, also must from the whole zone between the axial end to end of cylinder 12, keep very high gaseous tension, gas producer 14 just must produce sufficient gas flow in a flash, thereby is difficult to make gas producer 14 further miniaturizations.
In contrast, in this preloading device 210, axial one distolateral of cylinder 212, central authorities' stopper 224 separates the inside of cylinder 212, than axial one distolateral of the more close cylinder of piston 32 212, central stopper 224 keeps the pressure (that is, having limited the leakage of gas) of gases.
At this moment, though steel rope 38 passes the through hole 236 of central stopper 224, but, because in this part, steel rope 38 is linearly, so steel rope 38 passes through hole 236, and under the bubble-tight state between the peripheral part of interior perimembranous that keeps cylinder 212 and central stopper 224, can easily be installed in central stopper 224 inside of cylinder 212.And, in preloading device 210, as long as can remain on the gaseous tension that in gas producer 14, is produced more distolateral than axial another of the more close cylinder of central stopper 224 212, therefore, with from the axial end of cylinder 212 to the whole zone its other end in all keep the situation of higher gaseous tension to compare, just can keep very high gaseous tension with fewer gas.Like this, just can further dwindle the volume of gas producer 14.
Also have, near the peripheral part of the end face of the central stopper 224 of cylinder 212 axial opposite sides, butt (or crimping) separates axial one distolateral and another is distolateral of cylinder 212 by central stopper 224 on location division 230.And, because the end of axial another distolateral diffuser 130 of cylinder 212 and near part thereof, enter between the interior perimembranous of plane of bending 234 and cylinder 212, thus at the end butt (or crimping) of axial another diffuser 130 on distolateral of cylinder 212 on large-diameter portion 226.
Like this, go in the space between the interior perimembranous that gas by air channel 140 flows to spigot surface 136 that steel rope 38 passed through and cylinder 212 with regard to preventing or having suppressed very effectively.Therefore, the gaseous tension that is produced in gas producer 14 can make piston 32 slide effectively.
Effect and the effect of preloading device 210 aspect assembling of present embodiment then, is described.
When the preloading device 210 of assembling present embodiment, the steel rope 38 that on another of length direction is distolateral, is fixed with piston 32, the inside of inserting cylinder 212, and distolateral steel rope 38 length directions from the axial the other end of cylinder 212, axial one distolateral of the cylinder 212 of leading.
But, for example, if the preloading device 10 in above-mentioned first embodiment if form simple fairlead 30 on cylinder 12, just must allow steel rope 38 to fairlead 30 bendings near length direction one end of cylinder 12.And in preloading device 10 work, steel rope 38 is by bracelet 42 tighten seat belt 50, and when vehicle is a significant slowdown, constraint will be carried out the occupant's that inertia moves health to roughly the place ahead of vehicle, so the rigidity of steel rope 38 is than higher, and bending is difficulty.Thereby be difficult to allow steel rope 38 bent to a lateral bending of fairlead 30 rightly also by fairlead 30 in the inboard of cylinder 12.
Therefore, on the cylinder 212 of this preloading device 210, be formed with notch part 222, to replace fairlead 30 at the axial end opening of cylinder 212.Therefore, in this preloading device 210, one distolateral after cylinder 212 axial ends extract steel rope 38 length directions, allow steel rope 38 to notch part 222 lateral bending songs, by making the peristome of the notch part 222 of steel rope 38 from the axial end of cylinder 212, inboard to notch part 222 enters, and can come steel rope 38 from the outside that cylinder 212 axial pars intermedias are directed to cylinder 212.
In addition, in this state, if diffuser 130 from the axial distolateral insertion cylinder 212 of cylinder 212 time, steel rope 38 is embedded the inboard of guide groove 138, and then diffuser 130 is pressed into axial another of cylinder 212 when distolateral, steel rope 38 is just with diffuser 130, axial other end side shifting to cylinder 212, near the end of axial another distolateral notch part 222 of cylinder 212 (promptly, corresponding position, position with formation fairlead 30 on the cylinder 12 in above-mentioned first embodiment), steel rope 38 can be drawn out to cylinder 212 is outside to be come.
Like this, even the rigidity of steel rope 38 is higher, also can be easily steel rope 38 be drawn out to from the inside of cylinder 212 outsidely to come, and can improves the operating efficiency of preloading device 210 assembling operations.And, in this preloading device 210, kept gaseous tension between central stopper 224 and the piston 32, thereby limited gaseous tension effectively to leaking than central stopper 224 more close cylinder 212 axial sides by means of central stopper 224.Like this, even form the notch part 222 of an axial end that arrives cylinder 212 on cylinder 212, also can not have influence on the gaseous tension between central stopper 224 and the piston 32, perhaps, even if some influences are arranged, this influence is also very little.
Also have, because having suppressed gaseous tension effectively leaks to the axial side than central stopper 224 more close cylinders 212, so, even it is the A/F size of the notch part 222 on the internal and external circumferential direction of cylinder 212 is set at, for example, much bigger than the outside dimension of steel rope 38, can not have influence on the gaseous tension between central stopper 224 and the piston 32 yet, perhaps, even if some influences are arranged, this influence is also very little.Therefore, by setting the A/F size of the notch part 222 on the internal and external circumferential direction of cylinder 212 more much biggerly than the outside dimension of steel rope 38, steel rope 38 is entered in the notch part 222 easily, thereby can improve the operating efficiency of this operation.
As mentioned above, if diffuser 130 is pushed the inboard of cylinder 212, arrive up to steel rope 38 near the end of notch part 222 of the axial the opposing party's side that is positioned at cylinder 212, then near the end face periphery of the central stopper 224 of axial the opposing party's side of cylinder 212 butt (crimping) on location division 230.Thereby, it is excessively mobile to axial the opposing party's side of cylinder 212 to have limited central stopper 224 and diffuser 130, meanwhile, therefore central stopper 224 closed contacts are closed between the interior perimembranous of the peripheral part of central stopper 224 and cylinder 212 on location division 230.
As mentioned above, when assembling this preloading device 210, because as long as simply central stopper 224 is pressed into cylinder 212 inside, until with location division 230 butts till just passable, therefore needn't confirm continually whether central stopper 224 has arrived the desired location in the predefined cylinder 212, thereby, can improve the efficient that central stopper 224 and diffuser 130 is installed in cylinder 212 in-to-in assembling operations.
On the other hand, by tense wire rope 38, piston 32 is to the inner slide of cylinder 212, but, be connected on the location division 230 by means of piston 32, limited the axial side excessive slip of piston 32 to cylinder 212.Therefore, as long as allow steel rope 38 simply,, just needn't confirm continually whether steel rope 38 has arrived predefined cylinder 212 in-to-in desired locations until be connected on the location division 230 to cylinder 212 inner slide.Like this, just improved the efficient that piston 32 is installed in cylinder 212 in-to-in assembling operations.
At this moment, as mentioned above, when central stopper 224 and piston 32 arrive in the inner predefined position of cylinder 212 respectively, just be connected on the location division 230.That is, location division 230 both had been used for the location of central stopper 224, also was used for the location of piston 32.Therefore, just can locate central stopper 224 and piston 32 these two different parts with a location division 230, thereby can reduce the tooling cost of cylinder 212.
Like this, when on the preposition that central stopper 224 and diffuser 130 arrives in the cylinders 212, gas producer 14 has been installed on the axial end of cylinder 212, in addition, under the state that gas producer 14 has been installed, lid 214 is entrenched on the axial end of cylinder 212.
Then, under such state, lid 214 is carried out " ca(u)lk processing ", lid 214 is fixed on the axial end of cylinder 212 integratedly.Like this, in this preloading device 210, because its structure is that lid 214 usefulness " ca(u)lk processing " are fixed on the axial end of cylinder 212, so, can unlike the lid 20 of the preloading device in first embodiment 10, allow lid 214 rotate, lid 214 is fixed on operating efficiency on the cylinder 212 thereby can improve.
In addition, in the present embodiment, though do not relate to about with above-mentioned first embodiment in the 70 corresponding structures of the variant part with recess 74, but, it also can be provided with the variant part 216 of the function with variant part 70, in order to replace variant part 70, perhaps, also can on cylinder 212, form differently in addition, have the variant part 70 of recess 74 with variant part 216.
In addition, the structure of each above embodiment is as follows: the utility model is applied in all strains on the preloading device 10,110,150,210 of bracelet 42 by work.But, the utility model is not to only limit to this preloading device 10,110,150,210 that is used for straining bracelet 42, so long as by working process directly or indirectly the structure of tighten seat belt 50 get final product, also can be the structure of other component parts of tension except that bracelet 42.
Therefore, for example, also can be such structure, that is, the front end of steel rope 38 (with the end of piston 32 opposition sides) is connected on the anchor plate, this anchor plate can move with respect to vehicle body, and keep safety strap 50 front ends,, the front end of safety strap 50 is strained by the tension anchor plate.In addition, it also can be such structure, promptly, the front end of steel rope 38 (piston 32 opposition sides) is wound on the spool 48 of Webbing take-up device 46, apply on the rotatable parts of the turning effort of the direction of coiling safety strap 50 perhaps can for spool 48, strained by piston 32 and move by means of steel rope 38, spool 48 is rotated to the direction of coiling safety strap 50.
More than, specific embodiment of the present utility model has been described, the preloading device of the utility model first embodiment constitutes, have following parts: cylinder, form the tubular of both ends open, on the part of the periphery of axis direction pars intermedia, be provided with and be communicated with inner and exterior interconnecting part; Piston, can be configured in slidably than in the more close above-mentioned cylinder of above-mentioned interconnecting part another distolateral on; Link, an end fastening are on piston, and another is distolateral by being drawn out to the outside of above-mentioned cylinder after the above-mentioned interconnecting part, is connected braced system directly or indirectly on the support portion of the safety strap on the automotive occupant health; Gas generation apparatus is installed in an end of above-mentioned cylinder, by work another distolateral supply gas in above-mentioned cylinder.By means of this structure, existing tubular part can be applied on the cylinder, significantly cost-cutting.And, can reduce preloading device along with respect to the size on cylinder axis axis crisscross, preloading device integral body is diminished.
In addition, from the central axis preloading device linearly of the end to end of cylinder, because gas is not subjected to the very big obstruction of cylinder inner wall, thereby can suppress gas generation apparatus work the time, cylinder is towards the direction displacement that intersects with respect to the cylinder-bore axis direction.
Also have, preloading device has as the lower part: the recess of spill, be formed on the peripheral part of cylinder, and to the outside opening of above-mentioned cylinder; Restraint device is entering on the predetermined position that is fixed on above-mentioned vehicle under the state of above-mentioned recess, owing to be subjected to the interference of perimembranous in the above-mentioned recess, thus limit the displacement of above-mentioned cylinder.In this preloading device,, can remain on cylinder on the predetermined installation site by means of the restraint device that enters recess.
In addition, in having the preloading device of following structure, promptly, guide part is arranged on the interior perimembranous of above-mentioned cylinder, and between piston and above-mentioned interconnecting part, guide part is connected on the above-mentioned link, and above-mentioned link guided to above-mentioned interconnecting part, in this preloading device, the fairlead because guide part leads steel rope in the inboard of cylinder, thus can prevent, for example, edge part of fairlead and so on like this, just can allow steel rope successfully move to the steel rope excessive interference.
Also have, in having the preloading device of following structure, promptly, between piston and above-mentioned interconnecting part, be formed with the variant part of the part of above-mentioned cylinder to the distortion of central axis one side, above-mentioned recess contains the peripheral part of the above-mentioned cylinder of this variant part, and above-mentioned guide part contains the interior perimembranous of the above-mentioned cylinder of this variant part.In this preloading device, because the part (position) of the periphery by making cylinder deforms, can form above-mentioned recess and guide part, and can reduce the operation of processing.
In addition, according to preloading device, that is, has first distance member with following structure, first distance member is arranged near the end and the above-mentioned interconnecting part between the above-mentioned piston of cylinder, and separating between space that above-mentioned link passed through and the above-mentioned gas generation device.Above-mentioned first distance member can allow the above-mentioned gas generation device produce and pass through towards the gas of above-mentioned piston.In this preloading device, after gas generation apparatus was just started working, the gas that can prevent from the gas generation apparatus to be produced leaked from fairlead, and the pressure of gas is acted on the piston effectively.
Also have, have in the preloading device of following structure, above-mentioned interconnecting part is in the interior perimembranous and the peripheral part upper shed of above-mentioned cylinder, and forms the notch part of opening on an axial end of above-mentioned cylinder.This preloading device can improve makes the transaction capabilities of link by interconnecting part.
In addition, in having the preloading device of following structure, promptly, has second distance member, second spacer portion can be passed through above-mentioned link, and between above-mentioned interconnecting part and above-mentioned piston, above-mentioned cylinder interior is separated, prevent to leak to above-mentioned interconnecting part one side to the gas of above-mentioned piston one side supply.In this preloading device, can reduce the gas flow that in gas generation apparatus, is produced, can make the gas generation apparatus miniaturization.
Also have, in having the preloading device of following structure, that is, second distance member is arranged on the inside of above-mentioned cylinder, above-mentioned link is the position of straight parallel wire with respect to the central axis of above-mentioned cylinder.In this preloading device, under the state that link is run through, guarantee and the interior perimembranous of cylinder between the bubble-tight while, at an easy rate second distance member is installed in cylinder interior.
In addition, in having the preloading device of following structure, that is, on the interior perimembranous of above-mentioned cylinder, form the location division, this location division above-mentioned cylinder axis to distolateral being connected on second distance member, and limit the axial other end side shifting of above-mentioned second distance member to above-mentioned cylinder.In this preloading device, can be pressed into cylinder inside to second distance member very simply, until be connected on the location division, like this, just can reduce the assembling man-hour of this preloading device.
Also have, in having the preloading device of following structure, that is, above-mentioned location division forms and can allow above-mentioned piston from the other end butt of above-mentioned cylinder thereon, by means of above-mentioned piston is connected on the above-mentioned location division, limit above-mentioned piston to above-mentioned cylinder axis to distolateral move.In this preloading device, can be pressed into piston the inside of cylinder simply, until be connected on the location division.Like this, just can reduce the assembling man-hour of this preloading device.And, on cylinder, also can not form piston respectively and use the location division with the location division and second distance member, the result just can reduce the tooling cost of cylinder.
Claims (11)
1. preloading device is characterized in that having:
Cylinder forms the tubular of both ends open, on the part of the pars intermedia periphery of axis direction, is provided with and is communicated with inner and exterior interconnecting part;
Piston can be slidably arranged on more distolateral than in the more close above-mentioned cylinder of above-mentioned interconnecting part another;
Link, an end fastening are on piston, and another is distolateral by after the above-mentioned interconnecting part, is drawn out to the outside of above-mentioned cylinder, is connected braced system directly or indirectly on the support portion of the safety strap on the automotive occupant health;
Gas generation apparatus is installed in an end of above-mentioned cylinder, by work another distolateral supply gas in above-mentioned cylinder.
2. preloading device as claimed in claim 1 is characterized in that,
Linearly from the central axis of the end to end of above-mentioned cylinder.
3. preloading device as claimed in claim 1 is characterized in that having:
The recess of spill is formed on the peripheral part of above-mentioned cylinder, and to the outside opening of above-mentioned cylinder; And
Restraint device is entering under the state of above-mentioned recess, is fixed on the predetermined position of above-mentioned vehicle, and owing to be subjected to the interference of the interior perimembranous of above-mentioned recess, and limit above-mentioned cylinder displacement.
4. preloading device as claimed in claim 3 is characterized in that,
Interior perimembranous at above-mentioned cylinder is provided with guide part, and guide part is connected on the above-mentioned link between above-mentioned piston and above-mentioned interconnecting part, and above-mentioned link is guided to above-mentioned interconnecting part.
5. preloading device as claimed in claim 4, it is characterized in that, between above-mentioned piston and above-mentioned interconnecting part, formed the part that makes above-mentioned cylinder crushed element to the distortion of central axis one side, above-mentioned recess comprises the peripheral part of the above-mentioned cylinder of this crushed element, and above-mentioned guide part comprises the interior perimembranous of the above-mentioned cylinder of this crushed element.
6. preloading device as claimed in claim 1 is characterized in that,
Have first distance member, it is arranged near the end and the above-mentioned interconnecting part between the above-mentioned piston of above-mentioned cylinder, and separating between space that above-mentioned link passed through and the above-mentioned gas generation device,
Above-mentioned first distance member can allow the above-mentioned gas generation device produce and the gas that flows to above-mentioned piston passes through.
7. preloading device as claimed in claim 6 is characterized in that,
Above-mentioned interconnecting part have the interior perimembranous of above-mentioned cylinder and peripheral part opening and above-mentioned cylinder axis to the notch part of an end upper shed.
8. as claim 1 or 6 described preloading devices, it is characterized in that, also has second distance member, it can pass through above-mentioned link, and between above-mentioned interconnecting part and above-mentioned piston, above-mentioned cylinder interior is separated, and restriction is leaked to above-mentioned interconnecting part side to the gas of above-mentioned piston side supply.
9. preloading device as claimed in claim 8 is characterized in that,
The above-mentioned link that above-mentioned second distance member is arranged on above-mentioned cylinder interior becomes on the position of parallel linearity with respect to the central axis of above-mentioned cylinder.
10. preloading device as claimed in claim 8 is characterized in that,
On the interior perimembranous of above-mentioned cylinder, formed the location division, axial distolateral at above-mentioned cylinder, this location division is connected on above-mentioned second distance member, and limits above-mentioned second distance member and move to the axial opposite side of above-mentioned cylinder.
11. preloading device as claimed in claim 10 is characterized in that,
Above-mentioned location division forms and can allow above-mentioned piston from another distolateral being connected on it of above-mentioned cylinder, and is connected on the above-mentioned location division by above-mentioned piston, limits axial distolateral move of above-mentioned piston to above-mentioned cylinder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005178273 | 2005-06-17 | ||
| JP2005178273 | 2005-06-17 | ||
| JP2006062936 | 2006-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2923446Y true CN2923446Y (en) | 2007-07-18 |
Family
ID=37518553
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620117055 Expired - Lifetime CN2923446Y (en) | 2005-06-17 | 2006-06-16 | Pre-loading apparatus |
| CNB200610092271XA Expired - Fee Related CN100429097C (en) | 2005-06-17 | 2006-06-16 | Preloading device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610092271XA Expired - Fee Related CN100429097C (en) | 2005-06-17 | 2006-06-16 | Preloading device |
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| Country | Link |
|---|---|
| CN (2) | CN2923446Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429097C (en) * | 2005-06-17 | 2008-10-29 | 株式会社东海理化电机制作所 | Preloading device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100968829B1 (en) * | 2008-08-29 | 2010-07-08 | 현대자동차주식회사 | Seat belt pretensioner |
| JP5011415B2 (en) * | 2010-03-25 | 2012-08-29 | オートリブ ディベロップメント エービー | Seat belt device |
| JP5512432B2 (en) * | 2010-07-14 | 2014-06-04 | 株式会社東海理化電機製作所 | Pretensioner mechanism |
| DE102016104226B4 (en) * | 2016-03-08 | 2022-01-05 | Autoliv Development Ab | Tensioning device for a seat belt with a guide element |
| KR101788184B1 (en) * | 2016-10-13 | 2017-10-20 | 현대자동차주식회사 | Pretensioner and safety belt assembly having the same |
| DE102018100605B3 (en) * | 2018-01-12 | 2019-03-07 | Autoliv Development Ab | Belt tensioner with stepped inner tube diameter |
| CN109849840A (en) * | 2019-02-12 | 2019-06-07 | 安徽工程大学 | A kind of car belt dististyle preload assembly |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222985A1 (en) * | 1992-05-05 | 1993-11-11 | Trw Repa Gmbh | Linear drive for a belt tensioner |
| DE4232569C2 (en) * | 1992-09-29 | 1995-10-05 | Autoflug Gmbh | Pyrotechnic seat belt pretensioner |
| DE4404462A1 (en) * | 1994-02-11 | 1995-08-17 | Trw Repa Gmbh | Belt tensioners for a seat belt |
| JP3662800B2 (en) * | 1999-03-15 | 2005-06-22 | 日本発条株式会社 | Crew restraint device and power generation device |
| JP3836708B2 (en) * | 2001-11-13 | 2006-10-25 | 株式会社東海理化電機製作所 | Pretensioner device |
| CN2923446Y (en) * | 2005-06-17 | 2007-07-18 | 株式会社东海理化电机制作所 | Pre-loading apparatus |
-
2006
- 2006-06-16 CN CN 200620117055 patent/CN2923446Y/en not_active Expired - Lifetime
- 2006-06-16 CN CNB200610092271XA patent/CN100429097C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429097C (en) * | 2005-06-17 | 2008-10-29 | 株式会社东海理化电机制作所 | Preloading device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100429097C (en) | 2008-10-29 |
| CN1880132A (en) | 2006-12-20 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081029 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |