CN100404326C - Webbing retractor - Google Patents
Webbing retractor Download PDFInfo
- Publication number
- CN100404326C CN100404326C CNB2005101125221A CN200510112522A CN100404326C CN 100404326 C CN100404326 C CN 100404326C CN B2005101125221 A CNB2005101125221 A CN B2005101125221A CN 200510112522 A CN200510112522 A CN 200510112522A CN 100404326 C CN100404326 C CN 100404326C
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- Prior art keywords
- motor
- clutch
- gear
- wireline reel
- base plate
- Prior art date
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- 238000004804 winding Methods 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 12
- 230000001141 propulsive effect Effects 0.000 description 12
- 230000036541 health Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/44—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions
- B60R2022/442—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in parallel
- B60R2022/444—Belt retractors, e.g. reels with means for reducing belt tension during use under normal conditions using one spring and one additional retraction device in parallel the additional retraction device being an electric actuator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel
Abstract
The invention relates to a belt coiler (10), wherein a box (48) mounted with an internal motor (44) is assembly on a shell (30) relative to the axis of a worm (34), vertical with the thickness direction of the shell (30), and arranged on the end face opposite a back plate (14), the shell (30) is combined on the side face of one bottom plate (16) and contains a clutch (26), when a rotation shaft and a coiling shaft (20) are vertical, the motor (44) is arranged under the coiling shaft (20) between the bottom plate (16) and bottom plate (18), therefore, the motor (44) will not protruded from a frame (12) as the bottom plates (16, 18), and the invention can effectively utilize the space between the bottom plates (16, 18) to obtain compact structure.
Description
Technical field
The present invention relates to a kind of tape winding apparatus, particularly make the wireline reel rotation by motor, thus the tape winding apparatus of the band of can reeling.
Background technology
The seat belt device that is used to fetter the passenger has tape winding apparatus.Be provided with in this tape winding apparatus and be used to alleviate or the pulling force pressure reducer mechanism and the pretensioner mechanism of excessive constriction when eliminating mounting strap, under the situations such as vehicle emergency deceleration regime, this pretensioner mechanism passes through a certain amount of seat belt winding to wireline reel, eliminate and be called as a small amount of lax of " loose " etc., increase the binding force of safety strap simultaneously, further positively keep passenger's health passenger's body.And, by the so-called motor retractor known (as an example) of described each function of motor execution with reference to patent documentation 1, patent documentation 2.
This motor retractor can not only be brought into play the function of for example described pulling force pressure reducer and pretensioner, and when common mounting strap, and coiling that also can subband and pull out etc. is very useful.
Particularly in recent years, structure below having proposed, promptly in motor retractor, detect the distance of other vehicle and obstacle apart from the place ahead with the place ahead such as rang sensor monitor unit, when the distance of distance front vehicles and obstacle during less than certain value, starter motor, the rotational force by motor make the structure of wireline reel to the coiling direction rotation.
The said motor tractor in order to prevent that the rotation from the wireline reel side is passed to motor, and makes power-transfer clutch between the output shaft and wireline reel of motor, and this power-transfer clutch only will pass to wireline reel from the rotation of motor output shaft side.
In the above-mentioned existing motor retractor and since must with corresponding position, the end of wireline reel on power-transfer clutch is set, therefore, this clutch device is set in the outside of a pair of base plate that constitutes frame.And motor is located at the outside (promptly same with power-transfer clutch) of the base plate that this power-transfer clutch one side is housed, or motor is located at than a pair of base plate more above or below frame, locates.When adopting above-mentioned formation, the large-scale like this and heavy weight parts of motor be positioned at frame the outside and above or below, cause that motor retractor is whole to maximize, the harmony of motor retractor overall weight is poor.And then in the said motor tractor, when this motor retractor vibration, the such heavy weight parts of motor on the housing and framework of clutch equipment, must guarantee that it has the rigidity that can tolerate this torsion with twisting force.
" patent documentation 1 " spy opens the 2001-130376 communique
" patent documentation 2 " spy opens the 2001-347923 communique
The present invention considers above-mentioned situation, provides a kind of and not only can make the wireline reel rotation by motor, and compact conformation, balanced weight is good, and the good tape winding apparatus of rigidity.
Summary of the invention
Tape winding apparatus according to the embodiment of the invention comprises: by the framework that relative a pair of base plate and backboard constitute, promptly described a pair of base plate and backboard link into an integrated entity and the framework that forms; Wireline reel, along under the state of the relative direction of described a pair of base plate, this wireline reel rotatably is supported between the described a pair of base plate axially, is fixed for fettering the base end part of passenger's safety strap, this wireline reel gets up described seat belt winding by to a direction rotation around axle; Gear housing; Be installed in the motor on the described gear housing, under its S. A. state vertical with described wireline reel, this motor is arranged between the described a pair of base plate; Be contained in the motor gear portion in the described gear housing, with the state of the rotating shaft parallel of described motor under the axle of motor gear portion self is set, this motor gear portion is by constituting with a plurality of flat gears of the S. A. bonded assembly of described motor; Be installed in the clutch-bell cover on the side of any one base plate in the described a pair of base plate with engagement state; Be contained in the power-transfer clutch in the described clutch-bell cover, this clutch mechanism ground is between described motor and described wireline reel, the rotation of described motor is passed to described wireline reel, make described wireline reel rotation, block the transmission of the rotation that produces in described wireline reel side simultaneously, prevent that this rotation from passing to described motor; Be contained in the clutch gear portion in the described clutch-bell cover, with the state of the rotating shaft parallel of described motor under self axle is set, and with the final flat gear of described motor gear portion bonded assembly worm screw separably; With with the coaxial setting of described wireline reel and with described worm mesh, the rotational force of described worm screw is passed to the worm gear of described power-transfer clutch, wherein said gear housing by with the axis direction of described worm screw relatively mount described clutch-bell cover vertical with thickness direction described clutch-bell cover and with the end face of described backboard opposition side on.
In the tape winding apparatus of this embodiment, the passenger is sitting on the seat of vehicle, and wearing safety belt engages with buckle device by making the tongue tray that for example is located on the safety strap on health, can make the relative passenger's body of safety strap be in the state of wearing.
During for example vehicle is advanced,, then begin CD-ROM drive motor in case vehicle front exists the interval (distance from the vehicle to the obstacle) between obstacle and vehicle and the obstacle to reach in the specialized range.The S. A. of motor is connected with a plurality of flat gear of motor gear portion, and the final flat gear of motor gear portion is connected with the worm screw of clutch gear portion, simultaneously, and this worm and wheel engagement.Therefore, in case CD-ROM drive motor, its propulsive effort is passed to power-transfer clutch by the worm screw and the worm gear of a plurality of flat gear of motor gear portion, clutch gear portion.And then rotational force is given wireline reel by clutch transmits, and wireline reel rotates to the tape wrapping direction.Thus, safety strap is winding on the wireline reel from base end side, has eliminated and has worn a small amount of lax of safety strap under the state, and promptly so-called " loose " can improve the constrained force of safety strap to passenger's body.
In the tape winding apparatus of present embodiment, the clutch-bell cover that holds power-transfer clutch and clutch gear portion is installed in the side of any one base plate in a pair of base plate of the framework that is configured for supporting wireline reel under engagement state.Under the S. A. state vertical with wireline reel, motor is arranged between a pair of base plate.Therefore, the structure that is located at the framework outside with motor is compared, and the integral body of this tape winding apparatus is compact more.That is, the such bigger parts of motor are located between a pair of base plate, this big parts motor can be outwards outstanding from base plate.The space between a pair of base plate can be effectively utilized, the device compact overall structure can be made.Compare with the structure that motor is located at the framework outside, owing to motor is located between a pair of base plate as described above, can make the overall weight balance of tape winding apparatus be in the central authorities of base plate relative direction.Thereby, can make tape winding apparatus aspect weight, keep stable.
And power-transfer clutch and clutch gear portion are contained in engagement state and are installed in the clutch-bell cover on the side of a base plate, and motor is located between a pair of base plate.Therefore, motor and power-transfer clutch are set accessibly.Even mechanically connect the output shaft and the power-transfer clutch of motor, also can constitute the structure of this propulsive effort transmission mechanism etc. simply by a plurality of flat gears, worm screw and worm gear.Make the structure of device compact more thus, but and cost-cutting.
And then, the such heavier parts of motor are located between a pair of base plate.Therefore, can be not only with each base plate and connect in the backboard of above-mentioned base plate any one, and can be according to circumstances, with a pair of base plate and connect in the backboard of above-mentioned base plate any two or all support motor.Thus, need not the intensity of each parts of additive incrementation device, its result, but the weight of alleviator, cost-cutting in order to support motor.
Because the final flat gear of motor gear portion is connected separably with the worm screw of clutch gear portion, so motor gear portion can separate with clutch gear portion and exchange independently.Thereby, different after changing motor gear portions easily can be changed and be applicable to the number of teeth of for example a plurality of flat gears and number thereof etc.Thus, from converter speed ratio (reduction ratio) easier change and the setting of motor, can easily set, pass to when changing motor driven the rotative speed of power-transfer clutch and the rotative speed of wireline reel (setting the variation of tape wrapping characteristic) to the propulsive effort of clutch transmits.
And, can separate, change motor gear portion with clutch gear portion independently.Therefore, even foregoingly change, change motor gear portion in order to change converter speed ratio (reduction ratio), any variation (unaffected) can not take place in the engagement of the worm and wheel of the engagement of a plurality of flat gears of motor gear portion and clutch gear portion.Thereby the accuracy of mesh of each tooth (gear) is constant, the transmission efficiency of propulsive effort can not descend (deterioration).
During the vibration of this tape winding apparatus, the parts that motor is heavier like that make twisting force at described clutch-bell cover be equipped with under the engagement state on the base plate of above-mentioned housing.
In the tape winding apparatus of first embodiment, the axis direction of the gear housing of motor with respect to worm screw is housed, mount is vertical with the thickness direction of clutch-bell cover on the side that is installed in a base plate with engagement state, and is on the clutch-bell cover end face of backboard opposition side (promptly parallel with above-mentioned backboard and opposite with an above-mentioned backboard side).Therefore, the rigidity that the thickness direction of clutch-bell cover reaches on the vertical with it direction all improves, the torsion in the time of can tolerating described the vibration really.
The final flat gear that is contained in a plurality of flat gear of the motor gear portion in the gear housing is connected the direction vertical with respect to the thickness direction of clutch-bell cover, i.e. the axis direction ground mount gear housing of worm screw with the worm screw of clutch gear portion.Therefore, the dimensional discrepancy in the assembly direction of this gear housing mount part can not be subjected to the influence with the spacing (engagement) of the final flat gear of worm screw bonded assembly and other flat gear.Thereby each gear meshing precision can not change, and the transmission efficiency of propulsive effort can not reduce (deterioration).
As mentioned above, tape winding apparatus of the present invention not only can make the wireline reel rotation by motor, and has the high good result of compact conformation, balanced weight and rigidity.
Description of drawings
Fig. 1 is the decomposition diagram that the integral body of the tape winding apparatus of the expression embodiment of the invention constitutes.
Fig. 2 is the decomposition diagram of the formation of the motor of tape winding apparatus of the expression embodiment of the invention and motor gear portion.
Fig. 3 is the transparent view of formation of the mount of the motor of tape winding apparatus of the expression embodiment of the invention and motor gear portion.
Fig. 4 is the transparent view that the integral body of the tape winding apparatus of the expression embodiment of the invention constitutes.
Fig. 5 is the transparent view of formation of motor driven power delivery system of the tape winding apparatus of the expression embodiment of the invention.
The specific embodiment
Fig. 1 illustrates the tape winding apparatus 10 of the embodiment of the invention with exploded perspective integral body constitutes.
Illustrate the formation of the main portion of this tape winding apparatus 10 among Fig. 2 and Fig. 3 with exploded perspective.Fig. 4 constitutes with the integral body that transparent view shows tape winding apparatus 10.Fig. 5 shows the formation of the main portion of tape winding apparatus 10 with transparent view.
Wireline reel 20 by method manufacturings such as die casting rotatably is located between a pair of base plate 16 and base plate 18 of framework 12.Wireline reel 20 whole formation are roused (bobbin) shapes, fixedly form the base end part of the safety strap (not shown) of long ribbon shape.If wireline reel 20 is rotated to the side (following this direction is called " coiling direction ") around it, then safety strap layeredly is wound on the periphery of wireline reel 20 from its base end part.On the other hand, if from its front stretching safety strap, wireline reel 20 rotation on one side thereupon, safety strap is drawn out (following will pull out safety strap the time hand of rotation of wireline reel 20 be called " pull-out direction ").
One end of wireline reel 20 runs through base plate 18, and is outstanding to the outside of framework 12.Not shown lockout mechanism is located at the side of base plate 18.Lockout mechanism comprises acceleration pick-up, is connected with the torsion bar 24 that is erected at the lockplate 22 between base plate 16 and the base plate 18 and be located on the axle core segment of wireline reel 20.Under the situation, the action of lockout mechanism absorbs energy by an end of lockplate 22 constraint torsion bars 24, stops wireline reel 20 to rotate to pull-out direction simultaneously when vehicle emergency slows down etc.
On the other hand, connecting screw rod 21 is installed in the other end of wireline reel 20.It is outstanding outside framework 12 that this connecting screw rod 21 runs through base plate 16.Power-transfer clutch 26 and clutch gear portion 28 are located at the outside of base plate 16.
Power-transfer clutch 26 and clutch gear portion 28 are contained in the housing 30 as clutch-bell cover together, and power-transfer clutch 26 is connected with connecting screw rod 21.Power-transfer clutch 26 is connected with the gear 32 that constitutes clutch gear portion 28.This gear 32 is so-called worm gears that outer peripheral edges are formed with worm-gear toothing.Gear 32 and wireline reel 20 coaxial settings, this gear 32 is by power-transfer clutch 26 and connecting screw rod 21 (being wireline reel 20) mechanical connection.Therefore, in case gear 32 rotations, propulsive effort transmits by power-transfer clutch 26, and wireline reel 20 is to the coiling direction rotation, and the while is blocked in the transmission of the rotation that wireline reel 20 sides produce, and can prevent that this rotation from passing to gear 32.And then, run through this power-transfer clutch 26 with the front end of power-transfer clutch 26 bonded assembly connecting screw rods 21, stretch out to the side.
The worm screw 34 that constitutes clutch gear portion 28 is located in the housing 30.Worm screw 34 is provided with the axle of self under the state vertical with wireline reel 20, its end is supported on the housing 30 by axle sleeve 36,37, simultaneously and gear 32 engagements.Worm screw 34 one distolateral outwards outstanding from housing 30.Trimming screw 40 is screwed in the bearing portions of the housing 30 that supports worm screw 34 leading sections, make bearing portions hold the leading section of steel ball 38 ground contact worm screw 34.The leading section extruding steel ball 38 of trimming screw 40 makes the front end crimping of steel ball 38 and worm screw 34.Limit the longitudinal travel of (thrust adjustment) worm screw 34 thus.These worm screw 34 rotations, thus gear 32 rotations made.
Holding the power-transfer clutch 26 of above-mentioned formation and the housing 30 of clutch gear portion 28 is covered by clutch cover back plate 31.
Thus, power-transfer clutch 26 and clutch gear portion 28 integral installations fit in the single housing 30, can wholely form one unit.
On the other hand, motor 44 and motor gear portion 46 are located between the base plate 16 and base plate 18 of wireline reel 20 belows.
As shown in Figure 2, motor 44 and motor gear portion 46 have the casing 48 as gear housing.Screw 47 is installed in a side of this casing 48 with motor 44, and motor gear portion 46 is located at the opposite side of casing 48 simultaneously.Under the state of casing 48, motor 44 is fixed on a side of casing 48 in the front (outgoing side) of the S. A. that makes motor 44, the front end of S. A. (outgoing side) runs through casing 48 and outstanding to its opposite side (motor gear portion 46 sides).
On the other hand, the miniature gears 72 that constitutes a plurality of flat gears of motor gear portion 46 is installed in the front end of the S. A. of the outstanding motor 44 of opposite side (motor gear portion 46 sides) to casing 48.External tooth is that flat gear and the gear 74 that constitutes the propulsive effort transmission mechanism and gear 76 are contained in the motor gear portion 46 under intermeshing state separately.Said gear 74,76 is provided with under the state of axle and the rotating shaft parallel of motor 44 of self together, and gear 74 meshes with miniature gears 72.The gear 76 that constitutes final flat gear separably with from the housing 30 of described clutch gear portion 28 outwards the end of outstanding worm screws 34 be connected.Therefore, in case CD-ROM drive motor 44, propulsive effort transmits by miniature gears 72, gear 74 and gear 76, makes worm screw 34 rotations (with reference to Fig. 5).
The gear cap 78 that above-mentioned miniature gears 72, gear 74 and gear 76 are installed in the casing 48 covers.Gear cap 78 is provided with claw 80, and this claw 80 fastens with the hasp portion 82 that is located on the casing 48, and gear cap 78 is fixed on the casing 48.
Like this, motor 44 and motor gear portion 46 integral installations fit on the mono-casing 48, whole formation one unit.
In integral body is located at installation stay 84 on the casing 48, screw 86 is fixed on the motor 44 and the motor gear portion 46 of above-mentioned formation on the housing 30 (being framework 12) that holds power-transfer clutch 26 and clutch gear portion 28, thereby said motor 44 and motor gear portion 46 removably install.
Also as shown in Figures 2 and 3, install on the stay 84 as positioning convex 85 outstanding being formed on of location division.Corresponding with positioning convex 85, be formed on the end face (vertical with the thickness direction of housing) of housing 30 as the knock hole 87 of locating receiving portion with the end face of backboard 14 opposition sides.That is, embed knock hole 87, with screw 86 stay 84 will be installed and be fixed on the housing 30, can determine the rigging position of casing 48 (motor 44 and motor gear portion 46) uniquely with respect to housing 30 (being framework 12) by making positioning convex 85.The axially mount relatively of casing 48 and worm screw 34.
In the installing condition of this casing 48 on housing 30 (framework 12), the S. A. of motor 44 is vertical with wireline reel 20, and its outgoing side towards with the state of backboard 14 opposition sides of framework 12.And be between a pair of base plate 16 and base plate 18 and be positioned at wireline reel 20 just below.
Herein, in the motor 44 and motor gear portion 46 of described formation, be connected separably with the worm screw 34 of power-transfer clutch 26 and clutch gear portion 28 as the gear 76 of the final flat gear of motor gear portion 46.And casing 48 (stay 84 is installed) is removably mounted on the housing 30 by screw 86.Therefore, take off screw 86, unload lower box 48, can make motor 44 and motor gear portion 46 keep confined state ground to separate with housing 30 (framework 12) from housing 30.
And then said motor 44 can start based on the detection signal of for example the place ahead monitor unit etc.
The following describes the working process of present embodiment.
In the tape winding apparatus 10 of above-mentioned formation, the passenger is sitting on the seat of vehicle, and safety strap ties up on the health, engages with buckle device by making the tongue tray that for example is located on the safety strap, can constitute the wear state of safety strap to passenger's body.
Wearing under the state of this safety strap, even owing to passenger's health such as moves at reason, safety strap will wind up or pull out, promptly, wireline reel 20 will be to coiling direction or pull-out direction rotation, and power-transfer clutch 26 also can not pass to the rotational force of this wireline reel 20 S. A. of motor 44.
On the other hand, during for example vehicle is advanced, in case vehicle front exist interval (distance from the vehicle to the obstacle) between obstacle and vehicle and the obstacle reach decide in the scope, then begin starter motor 44, S. A. rotates rapidly.
The S. A. rotation of this motor 44, its rotational force passes to power-transfer clutch 26 by miniature gears 72, gear 74 and the gear 76 of motor gear portion 46, the worm screw 34 and the gear 32 of clutch gear portion 28.And then rotational force passes to wireline reel 20 by power-transfer clutch 26, and wireline reel 20 rotates to the tape wrapping direction.Eliminated the lax of safety strap thus, promptly so-called " loose " can improve the constrained force of safety strap to passenger's body.Even after this passenger carries out emergency braking (sudden stop) operation of vehicle, vehicle is in urgent deceleration regime, and safety strap also can keep passenger's health really.
Like this, in case motor 44 stops under the lax state having eliminated, the then mechanical connection of the S. A. of motor 44 and wireline reel 20 releasing.
In the tape winding apparatus 10 of present embodiment, the housing 30 that holds power-transfer clutch 26 and clutch gear portion 28 is installed in the side of a base plate 16 in a pair of base plate 16,18 of the framework 12 that is configured for supporting wireline reel 20 under engagement state.And base plate 16 under the vertical state of the S. A. that motor 44 is arranged on motor and wireline reel 20 and the wireline reel 20 between the base plate 18 just below.Therefore, the structure that is located at framework 12 outsides with motor 44 is compared, and the integral body of this tape winding apparatus 10 is compact more.That is, motor 44 such bigger parts are located at wireline reel 20 between a pair of base plate 16 and the base plate 18 just below.Therefore, this big parts motor 44 can be outwards not outstanding from framework 12 ( base plate 16,18).Its result can effectively utilize the space between a pair of base plate 16 and the base plate 18, can make the device compact overall structure.Compare with the structure that motor 44 is located at framework 12 outsides, as described above motor 44 is located at wireline reel 20 between a pair of base plate 16,18 just below.Therefore, can make the overall weight balance of tape winding apparatus 10 be in the central authorities of base plate 16 and base plate 18 relative directions, can make tape winding apparatus 10 aspect weight, keep stablizing.
In the tape winding apparatus 10 of present embodiment, power-transfer clutch 26 and clutch gear portion 28 are contained in engagement state and are installed in the housing 30 on the side of a base plate 16, and motor 44 be located at wireline reel 20 between a pair of base plate 16,18 just below.Therefore, can be near motor 44 and power-transfer clutch 26 are set.And the outgoing side of the S. A. of motor 44 is towards a side opposite with the backboard 14 of framework 12.Therefore, connecting the S. A. of motor 44 and the motor gear portion 46 and the clutch gear portion 28 (propulsive effort transmission mechanism) of power-transfer clutch 26 can suitably be provided with.Thereby, can constitute motor gear portion 46 and clutch gear portion 28 simply, thus, the structure of device is compact more, but and cost-cutting.
And then, with motor 44 such heavier parts be located at wireline reel 20 between a pair of base plate 16,18 just below.Therefore, can be not only with each base plate 16,18 and connect in the backboard 14 of above-mentioned base plate 16,18 any one, and can be as required, with any two or all support motor 44 in a pair of base plate 16,18 and the backboard 14.Thus, need not to increase the additional strength that is used to support motor 44, but the weight of alleviator like this, cost-cutting.
In the tape winding apparatus 10 of present embodiment, be connected separably with the worm screw 34 of clutch gear portion 28 as the gear 76 of the final flat gear of motor gear portion 46.Therefore, motor gear portion 46 can separate with clutch gear portion 28 and change independently.Thereby, other different after changing motor gear portions 46 easily can be changed and be applicable to the number of teeth of for example a plurality of flat gears such as miniature gears 72, gear 74 and gear 76 and number thereof etc.Thus, the easier change of converter speed ratio (reduction ratio) and the setting of the propulsive effort that transmits to power-transfer clutch 26 from motor 44, and can easily set, change CD-ROM drive motor 44 and pass to the rotative speed of power-transfer clutch 26 and the rotative speed of wireline reel 20 (setting the variation of tape wrapping characteristic).
Can separate, change motor gear portion 46 with clutch gear portion 28 independently.Therefore, even foregoingly change, change motor gear portion 46 in order to change converter speed ratio (reduction ratio), what can not take place with the engagement of gear 32 and change (unaffected) in the worm screw 34 of the engagement of a plurality of flat gears of motor gear portion 46 and clutch gear portion 28.Thereby each gear meshing precision is constant, the transmission efficiency of propulsive effort can not descend (deterioration).
During 10 vibrations of this tape winding apparatus, motor 44 such heavier parts make twisting force at described housing 30 be equipped with under the engagement state on the base plate 16 of above-mentioned housing 30.
In the tape winding apparatus 10 of present embodiment, the casing 48 that motor 44 is housed and the axis direction of worm screw 34 relatively mount vertical with the thickness direction of housing 30 on the side that is installed in a base plate 16 with engagement state, and with the end face of the housing 30 of backboard 14 opposition sides on.Therefore, the rigidity on the thickness direction of housing 30 and the vertical with it direction all improves, the torsion in the time of can tolerating described vibration really etc.
In the tape winding apparatus 10 of present embodiment, the gear 76 that constitutes the final flat gear in a plurality of flat gear that is contained in the motor gear portion 46 in the casing 48 is connected with the worm screw 34 of clutch gear portion 28.The relative direction vertical, i.e. the axis direction mount casing 48 of worm screw 34 with the thickness direction of housing 30.In the knock hole 87 that positioning convex 85 on the outstanding installation stay 84 that is formed on casing 48 is embedded on the end face that is formed on housing 30, and positioning and fixing.Therefore, the dimensional discrepancy in the assembly direction of this casing 48 mounts part can not be subjected to being connected with worm screw 34, and the influence of the spacing (engagement) of gear 76 and other gear 74.Thereby each gear meshing precision can not change, and the transmission efficiency of propulsive effort can not reduce (deterioration).
Owing to adopt the present invention can make the tape winding apparatus compact conformationization, balanced weight is good, improves rigidity, therefore can be used as for miniaturization is provided, the overall weight harmony is good, has the component parts of the motor retractor of the rigidity that can tolerate the torsion that motor vibrations produces.
Claims (6)
1. a tape winding apparatus is characterized in that, comprising:
Framework is made of relative a pair of base plate and backboard, is promptly linked into an integrated entity by described a pair of base plate and backboard and forms;
Wireline reel, along under the state of the relative direction of described a pair of base plate, this wireline reel rotatably is supported between the described a pair of base plate axially, is fixed for fettering the base end part of passenger's safety strap, this wireline reel gets up described seat belt winding to a direction rotation around axle;
Gear housing;
Be installed in the motor on the described gear housing;
Be contained in the motor gear portion in the described gear housing, with the state of the rotating shaft parallel of described motor under the axle of motor gear portion self is set, this motor gear portion is by constituting with a plurality of flat gears of the S. A. bonded assembly of described motor;
Be installed in the clutch-bell cover on the side of any one base plate in the described a pair of base plate with engagement state;
Be contained in the power-transfer clutch in the described clutch-bell cover, this clutch mechanism ground is between described motor and described wireline reel, the rotation of described motor is passed to described wireline reel, make described wireline reel rotation, block the transmission of the rotation that produces in described wireline reel side simultaneously, prevent that this rotation from passing to described motor;
Be contained in the clutch gear portion in the described clutch-bell cover,
It is characterized in that,
Under the S. A. of the described motor state vertical with described wireline reel, described motor be set between the described a pair of base plate and described wireline reel just below;
Described clutch gear portion by with the final flat gear of described motor gear portion separably the bonded assembly worm screw, constitute with the coaxial setting of described wireline reel and with described worm mesh and with the worm gear that the rotational force of described worm screw passes to described power-transfer clutch, the axle of described worm screw is set to the state with the rotating shaft parallel of described motor;
The leading section of described worm gear contacts with steel ball in the bearing portions that is contained in described housing, and makes the leading section of the described worm gear of described steel ball crimping by turning a set screw, limiting moving axially of described worm gear,
Wherein said gear housing by with the axis direction of described worm screw relatively mount described clutch-bell cover vertical with thickness direction described clutch-bell cover and on the end face of described backboard opposition side.
2. tape winding apparatus according to claim 1, it is characterized in that the end on the clutch case side of described wireline reel is provided with connecting screw rod, described connecting screw rod runs through the base plate that described clutch-bell cover is housed, outstanding in described clutch-bell cover, be connected with described power-transfer clutch.
3. tape winding apparatus according to claim 1 is characterized in that, the direction of described motor is confirmed as the front end of its S. A. outbound course towards described gear housing.
4. tape winding apparatus according to claim 3 is characterized in that, the front end of the outbound course of described motor axis of rotation runs through and protrudes in described gear housing, and with the engagement of one of the flat gear of described motor gear portion.
5. tape winding apparatus according to claim 1 is characterized in that, forms on described gear housing stay is installed, and has at least one location division on the described installation stay,
Have and the corresponding location of described positioning convex receiving portion on the end face of the described clutch-bell cover of fixing described gear housing,
Gear housing is fixed to and makes that the location division of described gear housing is corresponding with the location receiving portion on the described clutch-bell cover end face, thereby can determine the rigging position of gear housing.
6. tape winding apparatus according to claim 5 is characterized in that, described location receiving portion is a projection, and perhaps described location receiving portion is the hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004289845 | 2004-10-01 | ||
| JP2004289845A JP2006103405A (en) | 2004-10-01 | 2004-10-01 | Webbing take-up device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1757548A CN1757548A (en) | 2006-04-12 |
| CN100404326C true CN100404326C (en) | 2008-07-23 |
Family
ID=36142737
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101125221A Expired - Fee Related CN100404326C (en) | 2004-10-01 | 2005-09-30 | Webbing retractor |
| CNU2005201271524U Expired - Fee Related CN2841426Y (en) | 2004-10-01 | 2005-09-30 | Webbing retractor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201271524U Expired - Fee Related CN2841426Y (en) | 2004-10-01 | 2005-09-30 | Webbing retractor |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20080054117A1 (en) |
| EP (1) | EP1817213A1 (en) |
| JP (1) | JP2006103405A (en) |
| KR (1) | KR100857574B1 (en) |
| CN (2) | CN100404326C (en) |
| AU (1) | AU2005290510A1 (en) |
| TW (1) | TW200616819A (en) |
| WO (1) | WO2006038667A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100901264B1 (en) * | 2008-06-05 | 2009-06-09 | 주식회사 삼송 | Structure of clutch for pretensioner |
| CN102060217B (en) * | 2010-10-29 | 2014-06-18 | 宁波大叶园林工业有限公司 | Ball-containing position lock and pipe coiling device with multiple damping mechanisms |
| JP5576453B2 (en) * | 2012-10-16 | 2014-08-20 | 本田技研工業株式会社 | Seat belt device |
| CN106275456B (en) * | 2016-08-29 | 2019-01-25 | 航宇救生装备有限公司 | A kind of waistband pressure tensioning mechanism |
| CN108556789A (en) * | 2018-04-23 | 2018-09-21 | 江阴市达安汽车零部件有限公司 | Two level pre-tightens safety belt |
| KR102549394B1 (en) * | 2021-06-04 | 2023-07-03 | (유)삼송 | Webbing installation structure of pretensioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529143A (en) * | 1983-05-19 | 1985-07-16 | Kabushhiki Kaisha Tokai-Rika-Denki-Seisakusho | Webbing retractor |
| JP2000118352A (en) * | 1998-10-14 | 2000-04-25 | Takata Corp | Seat belt retractor and seat belt device |
| US6494395B1 (en) * | 1999-11-02 | 2002-12-17 | Takata Corporation | Seat belt retractor with clutch mechanism |
| JP2004042782A (en) * | 2002-07-11 | 2004-02-12 | Tokai Rika Co Ltd | Webbing take-up device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS58185351A (en) * | 1982-04-26 | 1983-10-29 | Nissan Motor Co Ltd | Seat belt retractor |
| JPS60124768U (en) * | 1984-01-30 | 1985-08-22 | 株式会社東海理化電機製作所 | webbing tensioning device |
| JPS613054U (en) * | 1984-06-07 | 1986-01-09 | 株式会社東海理化電機製作所 | Webbing tension adjustment device |
| JPH0323403Y2 (en) * | 1984-10-03 | 1991-05-22 | ||
| JPH0331641Y2 (en) * | 1985-02-01 | 1991-07-04 | ||
| US4659108A (en) * | 1985-09-11 | 1987-04-21 | American Safety Equipment Corp. | Automatic seat belt adjusting system |
| JPH0452131Y2 (en) * | 1985-10-22 | 1992-12-08 | ||
| US5611497A (en) * | 1995-07-24 | 1997-03-18 | Alliedsignal Inc. | Active tension reducer for the seat belt of a safety restraint system |
| JP4467688B2 (en) * | 1999-01-19 | 2010-05-26 | タカタ株式会社 | Seat belt retractor |
| JP3810060B2 (en) * | 2001-12-27 | 2006-08-16 | タカタ株式会社 | Seat belt retractor |
| JP4238079B2 (en) * | 2003-01-15 | 2009-03-11 | 株式会社東海理化電機製作所 | Webbing take-up device |
| TW200540044A (en) * | 2004-04-08 | 2005-12-16 | Tokai Rika Co Ltd | Webbing retractor |
| JP4308734B2 (en) * | 2004-09-02 | 2009-08-05 | 株式会社東海理化電機製作所 | Webbing take-up device |
-
2004
- 2004-10-01 JP JP2004289845A patent/JP2006103405A/en active Pending
-
2005
- 2005-09-29 US US11/576,455 patent/US20080054117A1/en not_active Abandoned
- 2005-09-29 EP EP05790288A patent/EP1817213A1/en not_active Withdrawn
- 2005-09-29 WO PCT/JP2005/018498 patent/WO2006038667A1/en active Application Filing
- 2005-09-29 AU AU2005290510A patent/AU2005290510A1/en not_active Abandoned
- 2005-09-29 KR KR1020077009226A patent/KR100857574B1/en not_active IP Right Cessation
- 2005-09-30 CN CNB2005101125221A patent/CN100404326C/en not_active Expired - Fee Related
- 2005-09-30 TW TW094134169A patent/TW200616819A/en unknown
- 2005-09-30 CN CNU2005201271524U patent/CN2841426Y/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529143A (en) * | 1983-05-19 | 1985-07-16 | Kabushhiki Kaisha Tokai-Rika-Denki-Seisakusho | Webbing retractor |
| JP2000118352A (en) * | 1998-10-14 | 2000-04-25 | Takata Corp | Seat belt retractor and seat belt device |
| US6494395B1 (en) * | 1999-11-02 | 2002-12-17 | Takata Corporation | Seat belt retractor with clutch mechanism |
| JP2004042782A (en) * | 2002-07-11 | 2004-02-12 | Tokai Rika Co Ltd | Webbing take-up device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006103405A (en) | 2006-04-20 |
| KR100857574B1 (en) | 2008-09-09 |
| CN1757548A (en) | 2006-04-12 |
| TW200616819A (en) | 2006-06-01 |
| KR20070058644A (en) | 2007-06-08 |
| WO2006038667A1 (en) | 2006-04-13 |
| AU2005290510A1 (en) | 2006-04-13 |
| CN2841426Y (en) | 2006-11-29 |
| EP1817213A1 (en) | 2007-08-15 |
| US20080054117A1 (en) | 2008-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20100930 |