CN101239608A - Safety belt device - Google Patents
Safety belt device Download PDFInfo
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- CN101239608A CN101239608A CNA2008100056020A CN200810005602A CN101239608A CN 101239608 A CN101239608 A CN 101239608A CN A2008100056020 A CNA2008100056020 A CN A2008100056020A CN 200810005602 A CN200810005602 A CN 200810005602A CN 101239608 A CN101239608 A CN 101239608A
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Abstract
The invention provides a seatbelt device, which is provided with: a belt for tying passengers who sit on the seat of a vehicle; a belt reel for winding the belt; a motor for passing driving force to the belt reel to winding the belt; a wound position detection unit for detecting the wound position of the belt reel and sending the detection signal of the wound position; a driving state detecting unit for detecting a driving state of the vehicle and sending the detection signal of the driving state; a driving state change determination unit for determining a driving state change status based on the driving state detection signal from the driving state detection unit to transmit a driving state change signal; a target wound position setting unit for setting a target wound position of the belt reel based on the wound position detection signal and the driving state change signal; and a motor control unit for controlling a current to be supplied to the motor so as to maintain a state in which the current wound position of the belt reel is equal to the target wound position in accordance with the driving state change signal.
Description
The application requires preceence based on Japanese patent application 2007-28312 number of application on February 7th, 2007 and the Japanese patent application 2007-29114 of order application in February 8 in 2007, quotes these contents at this.
Technical field
The present invention relates to be sitting in the occupant of vehicle on attending a banquet seat belt apparatus, especially have the seat belt apparatus of the vehicle of the pretensioner mechanism of using motor by belt constraint.
Background technology
At present known a kind of mounting strap device (for example with reference to TOHKEMY 2004-291967 communique) that changes the vehicle of harness tension according to the motoring condition of vehicle.
In addition, in recent years, as this seat belt apparatus, be provided for rotating the motor that drives tape feed roller, when urgent or motoring condition when unstable, the tension force of the drive controlling belt by motor is practical the seat belt apparatus of occupant's stable posture (for example with reference to Japanese kokai publication hei 6-286581 communique).
This seat belt apparatus is except being provided with urgent constraint mechanism, also be provided with when detecting the omen of collision, pretensioner mechanism by motor tension belt, the above-mentioned urgent mechanism that fetters is when waiting big bump that causes to import vehicle because of collision, with force of explosion of gunpowder etc., strain belt peremptorily with bigger power.
This existing seat belt apparatus though when detecting the omen of collision, make the pretensioner mechanism action, owing to need keep occupant's posture effectively, must be set the binding force of belt at this moment bigger.Therefore, if the critical value (for example car retardation critical value) that pretensioner mechanism is begun to move is set lowly, then pretensioner mechanism can make the occupant that uncomfortable feeling be arranged continually with brute force constraint occupant.
Therefore, in existing seat belt apparatus, in order to make not action continually of pretensioner mechanism, must be with the critical value setting that pretensioner mechanism begins to move than higher.
In addition, wish this seat belt apparatus now not only when detecting the omen of collision, and also strain belt when Ackermann steer angle or VSA (vehicle stabilization ancillary system) action etc., play the effect of in driver behavior, stablizing occupant's posture.
In the vehicle safety belting of above-mentioned prior art, if only change the tension force of safety strap according to the motoring condition of vehicle, in order to carry out protection constraint or the inhibition attitude change to the occupant, binding force can be excessive sometimes, and the occupant is felt under the weather.
And, the tension pick-up of the tension force that detects safety strap need be set in addition, device constitutes complicated, and, under the situation of the tension force that the Tension Control with safety strap becomes to stipulate, need guarantee and the cooresponding regulation tension force of vehicle running state situation jumpy, be difficult to the occupant to be fettered into desirable state, can produce the problem that can not only suppress attitude change but also guarantee desirable traveling comfort with low relatively tension force.Especially,,, might produce and make the uncomfortable too much tension force of occupant, or produce the lax of safety strap on the contrary because the Tension Control of safety strap is become goal tension because occupant's attitude change etc. produce under the situation of the tension variation that happens suddenly.
Summary of the invention
The purpose of this invention is to provide a kind of seat belt apparatus, this seat belt apparatus can suitably be strained belt, the stabilization that not only can suppress to impose on occupant's uncomfortable feeling but also can realize occupant's posture according to the variation of the motoring condition of vehicle.
The described technical scheme of the application provides a kind of seat belt apparatus, is provided with: constraint is sitting in the occupant of vehicle on attending a banquet belt; The tape feed roller of the above-mentioned belt of rolling; The motor that propulsive effort is delivered to above-mentioned tape feed roller, carries out the rolling of above-mentioned belt; Detect the take-up position of above-mentioned tape feed roller, the take-up position testing agency of transmission take-up position detection signal; Detect the motoring condition of above-mentioned vehicle, the motoring condition testing agency of transmission motoring condition detection signal; Based on from the motoring condition detection signal of the above-mentioned state detection mechanism that travels, the transformation situation of the above-mentioned motoring condition of judgement, send the motoring condition transformation decision mechanism of motoring condition convert signals; Based on above-mentioned take-up position detection signal and the above-mentioned state-transition signal that travels, set the target take-up position set mechanism of the target take-up position of above-mentioned tape feed roller; The motor control mechanism to the delivery of said motor, carries out the take-up position retentive control according to the above-mentioned state-transition signal that travels, control, and the take-up position of above-mentioned tape feed roller is maintained and the equal state of above-mentioned target take-up position.
According to technique scheme, judge that the motoring condition of vehicle changes if change decision mechanism, then according to the take-up position of the present tape feed roller that detects by take-up position testing agency with change the transformation situation target setting take-up position of the motoring condition that decision mechanism judges by motoring condition by motoring condition.
Then, drive the motor Be Controlled of tape feed roller so that tape feed roller is positioned at the target take-up position of the transformation situation of the motoring condition that reflects vehicle.
In addition, according to technique scheme,, therefore, can effectively and suitably strain belt according to the variation of the motoring condition of vehicle because the control motor is so that tape feed roller is positioned at the target take-up position according to the transformation situation of the motoring condition of vehicle.Therefore, according to the technical program, the amount of drawing in that makes belt is according to the changes phase ground increase and decrease of the motoring condition of vehicle, and the control of keeping etc., and its result both can suppress to impose on occupant's sticky feeling, can make occupant's stable posture again apace.
And, in the described seat belt apparatus of the application, when first motoring condition was converted to second motoring condition, above-mentioned target take-up position set mechanism also can will be set above-mentioned target take-up position for the cooresponding first target take-up position of above-mentioned first motoring condition with the many side's of rolling amount in the cooresponding second target take-up position of above-mentioned second motoring condition take-up position at the motoring condition of above-mentioned vehicle.
According to technique scheme, owing to become the target take-up position in the take-up position of the many sides of the front and back of the state-transition of travelling rolling amount, even vehicle running state is in the situation that changes repeatedly in the short time, the occupant also can be fettered by belt really.
In addition, in the described seat belt apparatus of the application, the motoring condition of above-mentioned vehicle is converted to second motoring condition from first motoring condition, the above-mentioned target take-up position of above-mentioned tape feed roller is when being altered to the cooresponding second target take-up position of above-mentioned second motoring condition with the cooresponding first target take-up position of above-mentioned first motoring condition, and the said motor control mechanism also can carry out the rolling of above-mentioned tape feed roller in the predefined rolling time.
According to technique scheme, even the take-up position of the reality of tape feed roller departs from objectives under the situation of take-up position before transformation, in specific time, but tape feed roller also rolling to and the cooresponding target take-up position of motoring condition next time.
In addition, according to technique scheme, because take-up position regardless of tape feed roller reality before changing, in specific time, but the tape feed roller rolling is arrived and the cooresponding target take-up position of motoring condition next time, therefore, can by belt the occupant be fettered in the cooresponding suitable moment of transformation situation with the motoring condition of vehicle.
In addition, in the described seat belt apparatus of the application, carry out the transformation situation individual settings that above-mentioned rolling time of the rolling of above-mentioned tape feed roller also can be judged according to the above-mentioned state-transition decision mechanism that travels.
According to technique scheme, according to the transformation situation of the motoring condition of vehicle, in the moment that is fit to this transformation situation with the tape feed roller rolling to the target take-up position.
Therefore, can under the emergency state, fetter the occupant rapidly and can under non-emergent state, not make the occupant have sticky feeling ground the occupant to be carried out the constraint of nature.
In addition, the described seat belt apparatus of the application also has target take-up position correction mechanism, said motor is being controlled, when making the take-up position of above-mentioned tape feed roller and above-mentioned target take-up position equal, above-mentioned target take-up position is revised, after the correction of the target take-up position of calculating according to above-mentioned target take-up position correction mechanism with the cooresponding first target take-up position of first motoring condition of above-mentioned vehicle is corrected to the second target take-up position, when the motoring condition of above-mentioned vehicle is converted to second motoring condition from first motoring condition, also can set and cooresponding the 3rd target take-up position of above-mentioned second motoring condition based on the correction of above-mentioned target take-up position.
According to technique scheme, the rolling of the tape feed roller under second motoring condition control has reflected the target take-up position correction under first motoring condition.
In addition, according to technique scheme, because the rolling target take-up position correction under first motoring condition is reflected in the rolling control of the tape feed roller under second motoring condition, therefore, under the state before transformation, under major cause that must the revise goal take-up position is left over situation after changing, can need not to carry out once more halfway the processing of the complexity of revise goal take-up position after the transformation.
In addition, in the described in the present invention seat belt apparatus, the difference of the above-mentioned target take-up position of being set by above-mentioned target take-up position set mechanism and the take-up position of the above-mentioned tape feed roller that is detected by above-mentioned take-up position testing agency is when specified value is following, and the said motor control mechanism also can be altered to above-mentioned target take-up position the take-up position of above-mentioned tape feed roller.
According to technique scheme, controlling so that the actual take-up position of tape feed roller during near the target take-up position, if the difference of target take-up position and actual take-up position is below specified value, then motor stops in fact the position control of tape feed roller.
The position control of tape feed roller 112 when therefore, the motoring condition that can in early days, stably restrain vehicle changes.
In addition, in seat belt apparatus of the present invention, when carrying out the take-up position retentive control, above-mentioned take-up position surpasses under the situation of above-mentioned target take-up position, the said motor control mechanism also can make above-mentioned target take-up position near the change of above-mentioned take-up position ground, with after changing value as fresh target take-up position more.
In seat belt apparatus of the present invention, when carrying out the take-up position retentive control, based on about crossing the rolling information of crossing of rolling state, for example according to more to the rolling lateral deviation from the renewal position target take-up position is upgraded.Thus, even under the state that carries out the rolling of safety strap repeatedly and pull out, the amount of pulling out that also can prevent to be equivalent to the rolling amount can prevent the pull-out direction steep variation of occupant's position to safety strap without any restrictedly being drawn out.
And, in the described in the present invention seat belt apparatus, the said motor control mechanism also has the storing mechanism of the above-mentioned more fresh target take-up position of storage, when carrying out above-mentioned take-up position retentive control, also the above-mentioned more fresh target take-up position that is stored in the above-mentioned storing mechanism can be set as above-mentioned target take-up position.
According to technique scheme, at motoring condition under the situation that specified states changes, because according to the renewal position renewal target take-up position that is stored in reservoir, target take-up position when for example finishing by the processing with the last time is stored as upgrading the position, can suitably carry out the renewal of target take-up position.
And, in the described in the present invention seat belt apparatus, the above-mentioned state detection mechanism that travels detects the turn direction of above-mentioned vehicle, the said motor control mechanism is incited somebody to action more by each turn direction of above-mentioned vehicle, and the fresh target take-up position stores into respectively in the above-mentioned storing mechanism, when carrying out above-mentioned take-up position retentive control, also can will set as above-mentioned target take-up position with the cooresponding above-mentioned more fresh target take-up position of above-mentioned turn direction.
Thus, by each turn direction (that is, situation from occupant's position to the situation of the rolling direction displacement of safety strap and occupant's position) target setting take-up position to the pull-out direction displacement of safety strap.Like this, for example the occupant to the degree of rolling direction displacement or frequency ratio occupant to the degree or the low relatively turn direction of frequency of pull-out direction displacement, can prevent that the target take-up position from being upgraded to the rolling side too much.
Description of drawings
Fig. 1 represents the pie graph of the seat belt apparatus of an embodiment of the invention.
Fig. 2 represents the summary pie graph of taking-up device of the seat belt apparatus of an embodiment of the invention.
Fig. 3 represents the control block diagram of tape feed roller drive motor of the seat belt apparatus of an embodiment of the invention.
Fig. 4 represents the current control diagram of circuit of tape feed roller drive motor of the seat belt apparatus of an embodiment of the invention.
Fig. 5 represents the constitution diagram of safety strap of the seat belt apparatus of an embodiment of the invention.
Fig. 6 represents the current control diagram of circuit of tape feed roller drive motor of seat belt apparatus of the variation of an embodiment of the invention.
Fig. 7 represents the whole summary pie graph of the seat belt apparatus of other embodiments of the present invention.
Fig. 8 represents that the controller with the seat belt apparatus of this embodiment is the summary pie graph at center.
Fig. 9 represents the constitution diagram of transformation of operating state of the seat belt apparatus of this embodiment.
Figure 10 represents the motoring condition of seat belt apparatus of this embodiment and the relaxed state corresponding diagram of belt.
Figure 11 represents the control flow chart of the seat belt apparatus of this embodiment.
Figure 12 A is the figure that is used to illustrate this embodiment, the variation line chart of the rolling target location of expression motoring condition under the situation that the high direction of degree of risk changes.
Figure 12 B is the figure that is used to illustrate this embodiment, the variation line chart of the rolling target location of expression motoring condition under the situation that the low direction of degree of risk changes.
The specific embodiment
Followingly describe with reference to the embodiment of accompanying drawing with regard to the seat belt apparatus of vehicle of the present invention.
The seat belt apparatus of the vehicle of present embodiment (hereinafter referred to as seat belt apparatus) 1, for example shown in Figure 1, it is so-called body-restraining seat belt device, taking-up device 4 from be built in centre strut 3 is pulled out safety strap 5 upward, this safety strap 5 passes the perforation fixer 6 of the upper side that is supported in centre strut 3, and the front end of safety strap 5 is fixed on the car body floor by the external fixator 7 in 2 the outside, close compartment of attending a banquet.And, passing dead bolt 8 in safety strap 5 parts that connect between fixer 6 and the external fixator 7, dead bolt 8 can engage, separate with the bracelet 9 on being fixed on the car body floor that 2 close the chaufeur of attending a banquet attends a banquet.
In addition, this seat belt apparatus shown in Figure 11 is fettering the occupant P on 2 of attending a banquet that for example is sitting in co-pilot seat.
In this seat belt apparatus 1, be sitting in the occupant P that attends a banquet on 2 and can make its engaging, and make seat belt apparatus 1 become running condition by dead bolt 8 is inserted bracelets 9, by removing this engaging, make dead bolt 8 separate (that is, removing bracelet 9), can make seat belt apparatus 1 become non-working condition from bracelet 9.
Bracelet 9 has buckle switch 17 described later, and when dead bolt 8 engages with bracelet 9 (, during running condition), buckle switch 17 is ON, and (, during non-working condition) buckle switch 17 was OFF when dead bolt 8 separated with bracelet 9.
As shown in Figure 2, taking-up device 4 is mainly rotating by being arranged to, the tape feed roller 11 of rolling safety strap 5, tape feed roller 11 is constituted to the spring 12 of the rolling direction rotation application of force and motor 14 from transfer devices such as gear cluster 13 to tape feed roller 11 that apply the rotational force of rolling direction by, and this taking-up device 4 has the angular sensor 15 of the position of rotation (take-up position) that detects tape feed roller 11 and detects the current sensor 16 of the electric current that flows to motor 14.
On the taking-up device 4 that constitutes like this, tape feed roller 11, also can be rotated to the rolling direction by the propulsive effort of motor 14 by when the rolling direction is rotated by spring 12.And, the rolling of the tape feed roller 11 when removing bracelet by spring 12 recuperability and the rotational force of the motor 14 that transmits by transfer device 13 carry out.
In addition, make tape feed roller 11 when emitting the direction rotation of safety strap 5, the transmission of power between tape feed roller 11 and the motor 14 is open circuited, and when pulling out safety strap 5 like this, motor 14 does not become its resistance.
For example shown in the control block diagram of Fig. 3, the control mechanism control that motor 14 is made of motor control part 20 and electric current adjustment part 21, when removing bracelet 9, motor 14 is driven for rolling tape feed roller 11, and, at the motoring condition that detects regulation by motoring condition detecting sensor 19 (for example, a detection car body left side, the output valve of the sensor of the physical quantity that the acceleration/accel of right or turn direction or steering angle etc. are relevant with the motion of vehicle surpasses the situation of the critical value of regulation, or detect the situation etc. of the variation of running environment according to communication informations such as navigationsystem) time, apply the tension force of regulation and the position supporting occupant of regulation to safety strap 5, or motor 14 is driven also when eliminating the safety strap that produces in travelling lax.
The output signal of angular sensor 15, current sensor 16, buckle switch 17 is imported into motor control part 20, and, when detecting the motoring condition of afore mentioned rules by motoring condition detecting sensor 19, action judging part 18 (action control mechanism) is to motor control part 20 output energizing signal.Motor control part 20 is set the driving of motor 14 and is stopped the moment and target current based on these incoming signals, and these control signals are imported into electric current adjustment part 21.Electric current adjustment part 21 by the coupled condition of control motor 14 and power supply 22, is adjusted the electric current that flows to motor 14 based on the control signal from motor control part 20.
In addition, also can constitute control mechanism with motor control part 20 and electric current adjustment part 21, motor control part 20 is constituted have to be equivalent to move the function of judging part 18 (action control mechanism) by action judging part 18 (action control mechanism).In this case, the detection signal of motoring condition detecting sensor 19 is outputed to the motor control part 20 of control mechanism, motor control part 20 is based on this detection signal, judge whether to carry out the take-up position retentive control, promptly judge whether to control delivery, be and the equal state of stipulating in target location with the position of rotation (take-up position) of keeping the tape feed roller 11 that detects by angular sensor 15 to motor 14.
The seat belt apparatus 1 of present embodiment has said structure, below with regard to the action of this seat belt apparatus 1, during safety strap 5 rollings especially carried out with regard to tape feed roller 11, the power supply control and treatment of motor 14 is described.
In addition, power supply control and treatment for example shown in Figure 4 is repeated at regular intervals by motor control part 20.
At first, in step S01 shown in Figure 4, for example obtain about the occupant information of occupant's the state of taking or posture state with for example for the set information of the various controlled variable of lax processing of the initial stage of eliminating safety strap 5 etc.
Then, in step S02, when for example eliminating lax processing of initial stage of safety strap 5 etc., CD-ROM drive motor 14 is carried out the rolling of safety strap 5.
Then, in step S03, judge whether to be in the proper states of lax safety strap such as state 5 of initial stage of for example having eliminated safety strap 5.
This judged result is under the situation of " NO ", returns above-mentioned step S02.
And this judged result is under the situation of " YES ", enters step S04.
Then, in step S04, storage is with respect to the position of rotation (that is, the take-up position of safety strap 5) of the tape feed roller 11 that is detected by angular sensor 15, the reference position of predefined regulation.
In addition, in this embodiment, the take-up position of safety strap 5 is the values that direct ratio ground increases that increase to the rolling amount of 11 pairs of safety strap 5 of tape feed roller.
Then, in step S05, by judging the variations more than the vehicle quantity of state generation specified amount such as acceleration/accel that for example whether detect car body, or whether the various control actions that travel action or the posture state of vehicle is controlled at the appropriate state of regulation begun etc., judge whether the variation of the motoring condition stipulated.
This judged result is under the situation of " NO ", finishes a series of processing.
And this judged result is under the situation of " YES ", enters step S06.
Then, in step S06, set target location with respect to the position of rotation (that is the take-up position of safety strap 5) of the tape feed roller 11 that detects by angular sensor 15.At this, for example, be engraved in this moment under the situation of storage part 20a that location information is stored in regulation in advance, the location information of this storage is set as the target location, be not stored in location information under the situation of storage part 20a of regulation, the reference position that will store in step S04 is set as the target location.
Then, in step S07, to motor 14 control of powering, so that for example equal by the present value and the target location of the take-up position of angular sensor 15 detected safety strap 5.
Then, in step S08, judge whether the present value of take-up position of angular sensor 15 detected safety strap 5 is different with the target location.
This judged result is under the situation of " NO ", enters step S14 described later.
And this judged result is under the situation of " YES ", enters step S09.
Then, in step S09, whether the absolute value of difference of judging the present value of take-up position and target location is greater than specified value.
This judged result is under the situation of " NO ", enters step S14 described later.
And this judged result is under the situation of " YES ", enters step S10.
Then, in step S10, whether the present value of judging take-up position less than the target location, that is, the rolling amount of judging this moment whether less than with the cooresponding rolling amount in target location.
This judged result is under the situation of " NO ", that is, safety strap 5 is overcharged under the situation of volume than the target location, enters step S12 described later.
And this judged result is under the situation of " YES ",, under the situation that safety strap 5 pulls than the target location, enters step S11 that is.
Then, in step S11, increase the delivery to motor 14, promotion is moved by the rolling of the safety strap 5 that tape feed roller 11 carries out.
In addition, in step S12, the present value that multiply by take-up position with the COEFFICIENT K of regulation deducts the resulting value in target location (value-target location now), and the value that will obtain add the target location after resulting value set as new target location.
In addition, predetermined coefficients K is for example greater than zero and less than 1.
Then, in step S13, reduce delivery, suppress the rolling action of being undertaken by tape feed roller 11 safety strap 5 to motor 14.
Then, in step S14, for example, the variation that vehicle state quantity produced of acceleration/accel by judging whether to detect car body etc. less than specified amount, or whether the various control actions that travel action or the posture state of vehicle is controlled at the appropriate state of regulation do not carried out etc., judge whether motoring condition is the stabilized conditions of regulation.
This judged result is under the situation of " NO ", enters above-mentioned step S08.
And this judged result is under the situation of " YES ", enters step S15.
Then, in step S15, target location at this moment is stored among the storage part 20a of regulation as location information.
Then, in step S16, judge whether to allow to limit the lock out action of safety strap 5 displacements.
This judged result is under the situation of " NO ", finishes a series of processing.
And this judged result is under the situation of " YES ", enters step S17.
Then, in step S17, permitting of the action that unlocks promptly, forbidden carrying out lock out action, finishes a series of processing.
In existing technology, for example occupant's position is after the rolling direction displacement of safety strap 5, again when the pull-out direction displacement of safety strap 5, do not having under the situation of new target location more, can be without any restrictedly pulling out and occupant's the position cooresponding amount of pulling out of rolling amount when the rolling direction displacement of safety strap 5, occupant's position might be to the rapid displacement of the pull-out direction of safety strap 5.
And the processing by above-mentioned power supply control, for example shown in Figure 5, the motoring condition of the corresponding vehicle in occupant's position is when displacements such as the left and right direction of car body or front and rear direction, especially, occupant's position is under the situation of the rolling direction displacement of safety strap 5, new target location more is with the present value of the take-up position of the safety strap 5 that detects by angular sensor 15 near this moment.
In each occupant's position when the rolling direction displacement of safety strap 5 new target location more, thus, the position that can prevent the occupant is to the rapid displacement of the pull-out direction of safety strap 5.
As mentioned above, seat belt apparatus 1 according to present embodiment, the delivery of subtend motor 14 is controlled, so that the take-up position of safety strap 5 arrives the target location of regulation, thus, compare with situation the about for example delivery of motor 14 being controlled, both can guarantee the desirable traveling comfort of occupant, can improve power supplying efficiency again motor 14 for the tension force of keeping regulation.For example, under the situation of the target location of the quiescence of having set corresponding occupant, before changing, occupant's posture need not the tension force effect, and, in the moment that posture changes a little, the tension force effect can be arranged rapidly, begin to fetter the occupant.
And, when the present value of take-up position surpasses the rolling state excessively of target location, based on the cross rolling information relevant with crossing the rolling state, more new target location increases the target location, even change to the rolling direction target location, thus, even for example be to carry out the rolling of safety strap 5 and the state of pulling out repeatedly, the amount of the pulling out quilt that also can prevent to be equivalent to the rolling amount can suitably fetter the occupant without any restrictedly pulling out.
In addition, in the above-described embodiment, also can omit the processing of step S01 to step S03 and step S16 and step S17.
In addition, in the above-described embodiment, shown in the variation of Fig. 6, to each moving direction of occupant on the left and right direction of car body (promptly, right and left to) set a target location, also can upgrade each target location based on the turn inside diameter direction quantity of state that for example constitutes by the acceleration/accel of turn direction or the left and right direction of car body or deflection angle etc.
In this variation, for example replace the step S06 in the above-mentioned embodiment shown in Figure 4, carry out the processing of step S21 and step S22, and, replace the step S15 in the above-mentioned embodiment, carry out the processing of step S23.
That is, in step S21, the turn direction quantity of state of the vehicle that is detected based on the motoring condition detecting sensor 19 that is made of lateral acceleration sensor and steering angle sensor etc. for example obtains the turn direction of vehicle.
And, in step S22, according to resulting each turn direction target setting position.In addition, be engraved in this moment according to each turn direction and in advance location information be stored under the situation of storage part 20a of regulation, the location information of being stored is set as target information, under location information is not stored in situation among the storage part 20a of regulation, the reference position is set as the target location.
In addition, in step S23, the target location of this each turn direction constantly is stored among the storage part 20a of regulation as location information.
According to the power supply in this variation control, according to each turn direction (that is, respectively in occupant's position when the rolling direction displacement of safety strap 5 and occupant's position when the pull-out direction displacement of safety strap 5) the target setting position.Therefore, for example compare to the degree or the frequency of pull-out direction displacement, to the low relatively turn direction of the degree of rolling direction displacement or frequency the time, can prevent that the target location from upgrading to the take-up position side too much with the occupant.
Followingly describe with regard to other embodiments of the present invention according to Fig. 7 to Figure 12 A.
Fig. 7 represents the whole schematic configuration of seat belt apparatus 101 of the present invention, and 102 among this figure is attending a banquet of taking of occupant 103.The seat belt apparatus 101 of this embodiment is so-called body-restraining seat belt device, belt 105 is pulled out the taking-up device on being installed in centre strut 104 upward, this belt 105 passes the perforation fixer 106 of the upper side that is supported in centre strut, and the front end of belt 105 is fixed on the car body floor by the external fixator 107 in the outside, close compartment of seat 102.And strike plate 108 is inserted in belt 105 parts that connect between fixer 106 and the external fixator 107, and this strike plate 108 can engage, separate with the bracelet 109 on the car body floor that is fixed on 102 close the body inner side of attending a banquet.
Rolling is on taking-up device 104 under the state in the early stage for belt 105, and occupant's 103 usefulness pull out belt 105, and strike plate 108 is fixed on the bracelet 109, thus, mainly occupant 103 chest and restraining waist part is being attended a banquet on 102.This seat belt apparatus 101, when collision happens or rollover, by DYN dynamic motor 110 and powder ignition tension belt 105, and motor 110 constitutes pretensioner mechanism.
As shown in Figure 8, on taking-up device 104, belt 105 is wound on the tape feed roller 112 that can be rotated to support on the housing (not having diagram), and the axle 112a of tape feed roller 112 is to distolateral giving prominence to of housing.The axle 112a of this tape feed roller 112 connects, disconnects the Poewr transmission mechanism 113 of the power-transfer clutch (not having diagram) that connects operation usefulness and can be connected linkedly with the S. A. 110a of motor 110 by comprising power.In addition, contain in taking-up device 104 the no graphic rolling spring of tape feed roller 112 to the rolling direction application of force, under the state that tape feed roller 112 and motor 110 are cut off by the cut-out of power-transfer clutch 110 action, the tension force that is produced by the rolling spring acts on the belt 105.
The rotation sensor 114 (take-up position testing agency) of the rotation that detects this 112a is set on the axle 112a of tape feed roller 112 in addition.This rotation sensor 114 for example by along the circumferencial direction different magnetic poles by the magnetic plectane 115 of alternating magnetization, constitute near a pair of Hall element 116a, the 116b that are provided with and the sensor circuit 117 of handling the detection signal of Hall element 116a, 116b with the outer peripheral portion of this magnetic plectane 115, the impulse singla of being handled by sensor circuit 117 is transfused to controller 118.
The rotation of corresponding tape feed roller 112, basic as the feedback signal use that is used for CD-ROM drive motor 110 controller 118 from sensor circuit 117 to the impulse singla of controller 118 inputs.Promptly, in controller 118, count the rotation amount (amount of pulling out of belt 105) that detects tape feed roller 112 by pulse signals, further obtain the rotative speed (speed of pulling out of belt 105) of tape feed roller 112 by the pace of change (frequency) of calculating impulse singla, in addition, compare the hand of rotation that detects tape feed roller 112 by waveform forward position to two impulse singlas.
In the controller 118 except being connected with the buckle switch 119 of the coupled condition that detects bracelet 109, the objects in front detecting device 120 (motoring condition testing agency) of the radar of the object of detection vehicle front etc., detect the front and back of vehicle respectively, about front and back acceleration pick-up (the motoring condition testing agency) 121 and lateral acceleration sensor 122 various detecting devices such as (motoring condition testing agencies) of deceleration/decel beyond, can also pass through in-vehicle network (CAN) and VSA (Vehicle Stability Assist: the vehicle stabilization ancillary system) send between other devices of 123 etc., received signal.
In addition, controller 118 has: thus calculate the take-up position test section 124 (take-up position testing agency) of the position of rotation of tape feed roller 112 from rotation sensor 114 received signals, the past side's article detection device 120 or acceleration pick-up 121,122, thereby received signals such as VSC123 detect the motoring condition test section 125 of the motoring condition of vehicle, thereby the motoring condition of motoring condition from which kind of state-transition to which kind of state of judging vehicle from motoring condition test section 125 received signals changes decision mechanism 126, from rolling test section 124, thereby motoring condition test section 125 and motoring condition change decision mechanism 126 respectively received signals set the target location set mechanism 127 of controlled target position of 110 pairs of tape feed rollers 112 of motors and control motor 110 driving so that the take-up position of tape feed roller 112 near the motor control mechanism 128 of the controlled target position of setting by target location set mechanism 127.In addition, the sensor as detecting vehicle running state except above-mentioned sensor, also can adopt car speed sensor or steering angle sensor, wheel speed sensors, side direction obliquity sensor, turn direction sensor etc.
At this, by the motoring condition of motoring condition test section 125 detected vehicles the states shown in the constitution diagram of for example Fig. 9.In the figure, the state of " lax eliminate " be under the common motoring condition of vehicle rotation by motor 110 can not bring the degree of sticky feeling to eliminate the lax state of belt 105 a little to the occupant.In addition, state when occupant's upper body is moved when the state of " G interlock " is the vehicle acceleration, deceleration or when turning, " VSA interlock " state is the state when VSA begins to move under the state that vehicle takes place to break away, " emergency action " state is that objects in front detecting device 120 detects vehicle and objects in front is approaching, promptly tramples drg or knock into the back to alleviate the state of braking when beginning to move.
And the slack of the belt 105 under each motoring condition for example, is preferably set as illustrated in fig. 10.Promptly, " the lax elimination " state among Figure 10 is that belt 105 and occupant's clothes slightly reclines, on degree, make the occupant not fetter sense, but in fact leave to a certain degree above relaxing, under the state of " G interlock ", lax lacking when setting the state than above-mentioned " lax eliminate " for, so that can fetter occupant's the shaking of upper body, under the state of " VSA interlock " or " emergency action ", relaxing still less when setting for than above-mentioned " G interlock " state is so that positively hold onto the occupant before collision.And, during collision or when rollover, tighten up belt 105 by powder ignition, thus, the lax of belt 105 almost is eliminated.
This seat belt apparatus 101 is according to the motoring condition control motor 110 of vehicle, so that the slack of belt 105 as shown in figure 10.Specifically, the target control value of motor 110 (the target take-up position of tape feed roller 112) is that the motoring condition according to vehicle sets basically, and changes according to the transformation situation (with reference to the arrow of Fig. 9 constitution diagram) of motoring condition and to set.
In addition, in this seat belt apparatus 101, control the take-up position (pull-out location of belt 105) of tape feed roller 112, and the moment by motor 110 keeps take-up position by the magnitude of current of control motor 110.
Below, according to diagram of circuit shown in Figure 11, the control of carrying out with regard to this seat belt apparatus 101 describes.
At first, in step S100, after the occupant pulls out belt 205 and engages bracelet 109, set the rolling reference position of tape feed roller 112, so that belt 105 and motroist's health fit.
Among the step S101 below, read information from the motoring condition testing agency of objects in front detecting device 120, acceleration pick-up 121,122, VSA123 etc., and, read the take-up position of the tape feed roller of obtaining based on the signal of rotation sensor 114 112.
In step S102, judge whether motoring condition changes, under the vicissitudinous situation, enter step S103, there be not end process under the situation about changing.
In step S103, judge that judging whether in a last step (S102) is the first judgement in back of travelling, be under the first situation about judging, enter step S104, be to enter step S105 for the second time and under the situation of later judgement.
In step S104, set the controlled target position (control target of motor 110) of the tape feed roller 112 of corresponding present motoring condition.Promptly the judgement at motoring condition is under the primary situation, and the transformation of motoring condition is not judged, the cooresponding set positions of motoring condition that will (change the back) with now is the controlled target position.
And in step S105, to be set at the transient target position with the controlled target position (control target of motor 110) of the cooresponding tape feed roller 112 of present motoring condition, and, the controlled target position (hereinafter referred to as " target location last time ") of adopting when reading last the processing.
Next, in step S106, whether judge present transient target position less than target location last time, less than situation under, enter step S107, under situation about being not less than, enter step S108.
In step S107, selection target location last time is the ultimate aim position, and in step S108, the transient target position of selecting this is the ultimate aim position.That is, to step S108, in last time and this controlled target position, a rolling amount side how of selecting tape feed roller 112 is as the ultimate aim position at step S106.
Next, in step S109, the ultimate aim set positions that will select in a last step (S107 or S108) is this formal controlled target position (hereinafter referred to as " target location this time ").
In step S110, the present take-up position (hereinafter referred to as " take-up position now ") that compares this target location and tape feed roller 112, whether the difference of judging this target location and present take-up position is bigger than enough little specified value, under the situation greater than specified value, directly enter step S111, under the situation less than specified value, through entering step S111 behind the step S112.
In step S112, this target location is reset to present take-up position.At this because this target location and now the difference of take-up position below specified value, and enough little, therefore,, in fact stop the position adjustment of tape feed roller 112 by the controlled target set positions is become present position.
In step S111, the take-up position of tape feed roller 112 change time (carrying out the specified time of rolling) is set for time of transformation situation of the motoring condition of corresponding vehicle.Promptly, for example at motoring condition " the lax elimination " state when travelling usually under the situation of " G interlock " state-transition, with compare to the situation of " VSA interlock " state or " emergency action " state-transition from " lax eliminate " state, need not to make belt promptly to fetter the occupant, importantly do not give the occupant uncomfortable constriction, therefore, with respect to the change time of the take-up position under the latter instance, that the change of the take-up position under former instance time set ground is bigger.
Specifically, for example, have at motoring condition under the situation of six kinds of patterns of 1 to 6, shown in following table 1, according to the transformation decision take-up position change time of each motoring condition, and the take-up position change time is stored in the storage part of controller, read with cooresponding take-up position change time of transformation situation of the motoring condition of this moment and as the location change time and set.
Table 1
| |
|
|
|
|
|
|
| |
?- | ?200 | ?150 | ?100 | ?50 | ?30 |
| |
?1000 | ?- | ?150 | ?150 | ?30 | ?20 |
| |
?1000 | ?300 | ?- | ?120 | ?20 | ?50 |
| |
?1000 | ?300 | ?100 | ?- | ?50 | ?60 |
| |
?1000 | ?100 | ?50 | ?40 | ?- | ?20 |
| |
?1000 | ?150 | ?100 | ?50 | ?40 | ?- |
(unit: msec)
In next procedure S113, based on to the rolling amount of this target location and the location change time of setting in a last step, set the rolling speed of tape feed roller 112, then, in step S114, carry out the retentive control of motor 110 according to each setting value and handle.In addition, when this motor 110 is in hold mode, still carry out the increase and decrease of supplying electric current or keep, so that the error of the take-up position of the reality of tape feed roller 112 and target location is near zero, but surpassed under the situation of permissible value in the control of supply current for a certain reason, then revised the target location of tape feed roller 112 itself.
Afterwards, in step S115, judge whether motoring condition is stable, and end process under the stable situation is returned step S101 under the unsettled situation, repeat the later processing of this step.
As mentioned above, in this seat belt apparatus 101, under the situation that the motoring condition of vehicle changes, because motor is controlled, make tape feed roller become the corresponding target take-up position of transformation situation with the motoring condition of vehicle, therefore, usually can be according to transformation situation taut band 105 that suitably furthers effectively.
Promptly, in this seat belt apparatus 101, at the motoring condition state low from degree of risk under the situation of the high state variation of degree of risk, shown in Figure 12 A, target take-up position and each motoring condition are increased accordingly, opposite, at the motoring condition state high from degree of risk under the situation of the low state variation of degree of risk, shown in Figure 12 B, owing to keep the target take-up position of degree of risk when high, so belt 105 can be effectively and positively fetter the occupant rapidly.In addition, when travelling state-transition, in the target take-up position before and after changing, a because side of selecting the rolling amount of tape feed roller 112 to increase, therefore, even the situation that motoring condition changes at short notice repeatedly also can be kept high bound to the occupant always.
And, in this seat belt apparatus 101, because motor is carried out following control, promptly determine the location change time of tape feed roller 112 accordingly respectively with the transformation situation of the motoring condition of vehicle, always in (with reference to a among Figure 12 A, the 12B, b, c) the end position change of pairing location change time, therefore, can carry out 105 couples of occupants' of belt constraint (retentive control that motor 110 carries out) at reasonable time according to the transformation situation of the motoring condition of vehicle.Therefore, even when increasing the rolling amount of tape feed roller 112,, also can fetter the occupant rapidly under the situation of the high state-transition of degree of risk, and, can not make the occupant that the constraint of the nature of sticky feeling is arranged under the situation of the lower state-transition of degree of risk.
In addition, in this seat belt apparatus 101, in the difference of the target take-up position of tape feed roller 112 and actual take-up position under the situation below the specified value, because change target take-up position, so that actual take-up position becomes the target take-up position, in fact the position control of 110 pairs of tape feed rollers 112 of motor stops, therefore, and the position control of tape feed roller 112 convergence in the time of can in early days, stably motoring condition being changed.
And, this seat belt apparatus 101, in the control and treatment of motor 110, when controlling supplying electric current for a certain reason above permissible value, though the target location of tape feed roller 112 itself is corrected, in the processing next time the when target location of the Xiu Zhenging motoring condition that is reflected to vehicle changes herein.Therefore, under major cause that must the revise goal position is left over situation after changing, the processing of the complexity of can not need after transformation, the target location being revised once more.
In addition, the present invention is not limited to above-mentioned embodiment, can carry out various design modifications in the scope that does not exceed its aim.
Claims (9)
1. seat belt apparatus is provided with:
Be used to fetter the belt that is sitting in the occupant of vehicle on attending a banquet,
The tape feed roller of the described belt of rolling,
Propulsive effort is delivered to described tape feed roller, carries out the motor of the rolling of described belt,
Detect the take-up position of described tape feed roller, send the take-up position testing agency of take-up position detection signal,
Detect the motoring condition of described vehicle, send the motoring condition testing agency of motoring condition detection signal,
Based on motoring condition detection signal from described motoring condition testing agency, judge the transformation situation of described motoring condition, the motoring condition that sends the motoring condition convert signals changes decision mechanism,
Based on described take-up position detection signal and described motoring condition convert signals, set the target take-up position set mechanism of the target take-up position of described tape feed roller,
Based on described motoring condition convert signals, control is carried out the take-up position retentive control to the delivery of described motor, so that the take-up position of described tape feed roller maintains the motor control mechanism with the equal state of described target take-up position.
2. seat belt apparatus as claimed in claim 1 is characterized in that:
When the motoring condition of described vehicle when first motoring condition is converted to second motoring condition, described target take-up position set mechanism will be set described target take-up position for the cooresponding first target take-up position of described first motoring condition with the many side's of rolling amount in the cooresponding second target take-up position of described second motoring condition take-up position.
3. seat belt apparatus as claimed in claim 1 is characterized in that:
Motoring condition at described vehicle is converted to second motoring condition from first motoring condition, the described target take-up position of described tape feed roller is when being altered to the cooresponding second target take-up position of described second motoring condition with the cooresponding first target take-up position of described first motoring condition, and described motor control mechanism carries out the rolling of described tape feed roller in the predefined rolling time.
4. seat belt apparatus as claimed in claim 3 is characterized in that:
The described rolling time of carrying out the rolling of described tape feed roller is according to changed transformation situation individual settings that decision mechanism judges by described motoring condition.
5. seat belt apparatus as claimed in claim 1 is characterized in that:
Also have target take-up position correction mechanism, described motor controlled so that the take-up position of described tape feed roller and described target take-up position when equal, are revised described target take-up position,
After the correction of the target take-up position of calculating according to described target take-up position correction mechanism with the cooresponding first target take-up position of first motoring condition of described vehicle is corrected to the second target take-up position, when the motoring condition of described vehicle is converted to second motoring condition from described first motoring condition, set and cooresponding the 3rd target take-up position of described second motoring condition based on the correction of described target take-up position.
6. seat belt apparatus as claimed in claim 1 is characterized in that:
When specified value was following, described motor control mechanism was altered to described target take-up position the take-up position of described tape feed roller in the difference of the described target take-up position of being set by described target take-up position set mechanism and the take-up position of the described tape feed roller that is detected by described take-up position testing agency.
7. seat belt apparatus as claimed in claim 1 is characterized in that:
Under described take-up position surpassed the situation of described target take-up position, described motor control mechanism changes described target take-up position made it near described take-up position, with after changing value as fresh target take-up position more.
8. seat belt apparatus as claimed in claim 7 is characterized in that:
Described motor control mechanism also has the storing mechanism of the described more fresh target take-up position of storage,
When carrying out described take-up position retentive control, described motor control mechanism will be set as described target take-up position by the described more fresh target take-up position of described storing mechanism storage.
9. seat belt apparatus as claimed in claim 8 is characterized in that:
The turn direction of described vehicle detects in described motoring condition testing agency,
Described motor control mechanism by each turn direction of described vehicle more the fresh target take-up position store in the described storing mechanism,
When carrying out described take-up position retentive control, described motor control mechanism will be set as described target take-up position with the cooresponding described more fresh target take-up position of described turn direction.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007028312 | 2007-02-07 | ||
| JP2007-028312 | 2007-02-07 | ||
| JP2007028312A JP4890287B2 (en) | 2007-02-07 | 2007-02-07 | Vehicle seat belt device |
| JP2007029114A JP4902382B2 (en) | 2007-02-08 | 2007-02-08 | Seat belt device |
| JP2007029114 | 2007-02-08 | ||
| JP2007-029114 | 2007-02-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101239608A true CN101239608A (en) | 2008-08-13 |
| CN101239608B CN101239608B (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100056020A Active CN101239608B (en) | 2007-02-07 | 2008-02-05 | Safety belt device |
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| Country | Link |
|---|---|
| JP (1) | JP4890287B2 (en) |
| CN (1) | CN101239608B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892643A (en) * | 2010-06-03 | 2013-01-23 | 奥托立夫开发公司 | Occupant protection device |
| CN111098813A (en) * | 2018-10-29 | 2020-05-05 | 丰田自动车株式会社 | Control device for vehicle seat belt |
| CN111212769A (en) * | 2017-11-17 | 2020-05-29 | 株式会社日立制作所 | Mobile device and mobile device system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018203211A (en) * | 2017-06-09 | 2018-12-27 | 株式会社東海理化電機製作所 | Seat belt winding control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780444B2 (en) * | 1987-03-17 | 1995-08-30 | 日産自動車株式会社 | On-board attitude control device |
| JP3988600B2 (en) * | 2001-12-14 | 2007-10-10 | 日産自動車株式会社 | Crew restraint system |
-
2007
- 2007-02-07 JP JP2007028312A patent/JP4890287B2/en active Active
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2008
- 2008-02-05 CN CN2008100056020A patent/CN101239608B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102892643A (en) * | 2010-06-03 | 2013-01-23 | 奥托立夫开发公司 | Occupant protection device |
| CN102892643B (en) * | 2010-06-03 | 2015-03-25 | 奥托立夫开发公司 | Occupant protection device |
| CN111212769A (en) * | 2017-11-17 | 2020-05-29 | 株式会社日立制作所 | Mobile device and mobile device system |
| CN111212769B (en) * | 2017-11-17 | 2022-05-13 | 株式会社日立制作所 | Mobile device system |
| CN111098813A (en) * | 2018-10-29 | 2020-05-05 | 丰田自动车株式会社 | Control device for vehicle seat belt |
| CN111098813B (en) * | 2018-10-29 | 2022-05-10 | 丰田自动车株式会社 | Control device for vehicle seat belt |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008189256A (en) | 2008-08-21 |
| CN101239608B (en) | 2012-08-29 |
| JP4890287B2 (en) | 2012-03-07 |
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