JP2013052707A - Seat belt device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a tongue from being left caught at a door opening.SOLUTION: This seat belt device comprises: a belt reel around which a webbing is wound; a biasing member biasing the belt reel in a webbing winding direction; a motor 14 capable of transmitting driving force to the belt reel in the webbing winding direction; a drawing amount detection means 21 detecting a webbing drawing amount at the current time after the start by setting the webbing drawing amount at the start time to zero; a stop time measurement means 22 measuring the stop time when the drawing of the webbing is stopped; and a first motor control means 23 driving the motor 14 in the webbing winding direction when the stop time measured by the stop time measurement means 22 reaches a waiting time set in accordance with the webbing drawing amount detected by the drawing amount detection means 21 during the stop of the webbing drawing, when the drawing of the webbing is stopped.

Description

  The present invention relates to a seat belt device.

  A seat belt device installed in a vehicle has a belt for occupant restraint wound around a belt reel in a retractor, pulls out the belt from the retractor at the time of wearing, and a tongue attached to the belt is attached to a vehicle body. The passenger is restrained by engaging with. When releasing the restraint, the belt reel is rotated in the belt winding direction by the spring biasing force and the motor driving force when the tongue is removed from the buckle. As a result, the belt is wound around the belt reel and retracted. Stored in.

  For example, in the seat belt device described in Patent Document 1, when the belt is retracted when the belt restraint is released, after the winding operation by the spring is completed (specifically, after a predetermined time has elapsed since the tongue was released from the buckle). ), The winding by the motor is prevented from overlapping the winding of the spring and the motor, thereby enabling the use of a spring having a weak biasing force and shortening the energization time to the motor, Power consumption is reduced.

JP 2007-84021 A

  In the conventional seat belt device, it is disclosed that when the belt restraint is released, the motor is driven after a predetermined time has elapsed since the tongue is released from the buckle. However, in order to restrain the occupant, the belt is removed from the retractor. The drive control of the motor until the drawer and the tongue are engaged with the buckle is not disclosed.

By the way, the occupant got on and started the operation to pull out the belt from the retractor in order to restrain it with the belt, but the occupant might turn his will and release his hand before engaging the tongue with the buckle. is there.
In such a case, the tongue attached to the belt happens to be caught by the outer edge of the door opening of the vehicle body or by the door striker provided in the door opening, making it impossible to wind the belt by the spring. The belt may stop. Thus, it is not preferable to close the door with the tongue hooked on the door opening.

  Therefore, the present invention provides a seat belt device capable of reducing the tongue from being caught in the door opening.

The seat belt device according to the present invention employs the following means in order to solve the above problems.
The invention according to claim 1 is a webbing that restrains an occupant (for example, an occupant P in an example to be described later) seated on a seat (for example, a seat 2 in an example to be described later) (for example, webbing 5 in an example to be described later). A belt reel (for example, a belt reel 11 in an embodiment to be described later), and a biasing member (for example, a spring 12 in an embodiment to be described later) for biasing the belt reel in a direction in which the webbing is wound. A motor capable of transmitting a driving force to the belt reel in a direction in which the webbing is wound (for example, a motor 14 in an embodiment to be described later), and the webbing at the present time after startup with the webbing withdrawal amount at startup being zero. Drawer amount detecting means for detecting the amount of drawer (for example, a drawer in the embodiment described later) Detecting means 21), stop time measuring means for measuring the stop time when the webbing pull-out is stopped (for example, stop time measuring means 22 in an embodiment described later), and the webbing pull-out are stopped. When the stop time measured by the stop time measuring means reaches a waiting time set according to the webbing withdrawal amount detected by the withdrawal amount detection means while the webbing withdrawal is stopped A seat belt device comprising: first motor control means (for example, first motor control means 23 in an embodiment described later) for driving the motor in the webbing take-up direction.

  According to a second aspect of the present invention, in the first aspect of the present invention, the standby is set when the webbing pull-out amount detected by the pull-out amount detection unit is out of a predetermined range while the webbing pull-out is stopped. The time is longer than the standby time set when the time is within the predetermined range.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, there is a mounting state detecting means for detecting the mounting state and the non-mounting state of the webbing (for example, a buckle switch 17 in an embodiment described later) , A winding amount detection means for detecting the winding amount of the webbing at the present time, assuming that the winding amount of the webbing when the switching from the wearing state to the non-wearing state of the webbing is detected by the wearing state detection unit (For example, the winding amount detection means 24 in the embodiment described later) and the motor is driven in the webbing winding direction when the mounting state detection means detects that the webbing is switched from the mounted state to the non-mounted state. And the motor is stopped when the winding of the webbing is stopped, and the winding is stopped when the webbing is stopped. Second motor control means for re-driving the motor in the webbing take-up direction (for example, described later) when the webbing take-up amount detected by the amount detecting means is less than a predetermined amount corresponding to the total storage of the webbing And a second motor control means 25) in the embodiment.

  According to the first aspect of the present invention, it is possible to reduce the state where the webbing (including the tongue) is caught in the door opening when the webbing is stopped in the middle. As a result, it is possible to prevent the door from being closed while the webbing is caught in the door opening.

  According to the second aspect of the present invention, it is possible to reduce the possibility that the winding resistance is generated by the motor when the occupant pulls out the webbing, and to suppress the occupant from feeling uncomfortable.

  According to the invention which concerns on Claim 3, the hook at the time of accommodation operation | movement of the webbing 5 after buckle cancellation | release can be reduced.

In the seat belt device according to the present invention, it is a configuration diagram showing a state in which all of the webbing is stored. FIG. 3 is a configuration diagram showing a state in the middle of the seat belt device where an occupant pulls out and restrains webbing. It is a schematic block diagram of the retractor in the said seatbelt apparatus. It is a control block diagram of a motor for driving a belt reel in the seat belt device. It is a figure which shows the state which the tongue of the seatbelt apparatus was hooked in the door opening part. It is a figure which shows the state which the tongue of the seatbelt apparatus was hooked on the door striker. It is a flowchart which shows winding-up control of the webbing in the said seatbelt apparatus.

Embodiments of a seat belt apparatus according to the present invention will be described below with reference to the drawings of FIGS.
1 and 2 show a schematic configuration of the seat belt device 1, and this embodiment is an aspect of a seat belt device for restraining an occupant P seated on a seat 2 of a driver's seat. The seat belt device 1 is a so-called three-point seat belt device. A webbing 5 is drawn upward from a retractor 4 built in the center pillar 3, and the webbing 5 is supported on the upper side of the center pillar 3. 6 and the front end of the webbing 5 is fixed to the vehicle body floor via an outer anchor 7 closer to the outside of the passenger compartment of the seat 2. A tongue 8 is inserted between the through anchor 6 and the outer anchor 7 of the webbing 5, and the tongue 8 can be attached to and detached from the buckle 9 fixed to the vehicle body floor near the passenger seat of the seat 2. ing. In this embodiment, the tongue 8 constitutes a part of the webbing 5.

  In this seat belt device 1, the webbing 5 is wound and stored in the retractor 4 in the initial state, and the occupant P seated on the seat 2 pulls out the webbing 5 by hand and inserts the tongue 8 into the buckle 9. As a result, the occupant P is restrained with respect to the seat 2 mainly on the chest and abdomen. Further, the occupant P can be brought into a non-wearing state by manually disengaging the tongue 8 and the buckle 9 (hereinafter also referred to as “buckle release”).

  The buckle 9 is provided with a buckle switch (attachment state detecting means) 17 (see FIG. 4). The buckle switch 17 is turned on when the tongue 8 is engaged with the buckle 9 (in other words, in the attachment state). When the tongue 8 is detached from the buckle 9 (in other words, when not attached), it is turned OFF.

As shown in FIG. 3, the retractor 4 is rotatably supported by a casing (not shown), and a belt reel 11 around which the webbing 5 is wound, and a spring (which urges the belt reel 11 to rotate in the webbing winding direction). Rotation for detecting the rotational position of the belt reel 11 mainly comprising a biasing member 12 and a motor 14 for applying a rotational force in the webbing winding direction to the belt reel 11 via a transmission device 13 such as a gear train. An angle sensor 15 and a current sensor 16 that detects a current flowing through the motor 14 are provided.
The rotation amount, rotation speed, and rotation direction of the belt reel 11 can be obtained based on the detection value of the rotation angle sensor 15, and the drawing amount and winding amount of the webbing 5 are detected based on the rotation amount of the belt reel 11. be able to.

In the retractor 4 configured as described above, the belt reel 11 is always urged in the winding direction by the spring 12 and can be rotated in the winding direction by the driving force of the motor 14. When the buckle is released, the belt reel 11 is wound by the restoring force of the spring 12 and the rotational force (driving force) of the motor 14 transmitted through the transmission device 13.
When the belt reel 11 is rotated in the webbing pull-out direction, power transmission between the belt reel 11 and the motor 14 is interrupted by a clutch (not shown), and the motor 14 is pulled out when the webbing 5 is pulled out. Does not become a resistance.

  As shown in the control block diagram of FIG. 4, the motor 14 is controlled by the motor control device 20 and is driven when the webbing 5 is wound when the buckle 9 is released, and also when the webbing 5 is stopped under predetermined conditions. Driven to take up the webbing 5.

Each output signal of the rotation angle sensor 15, current sensor 16, buckle switch 17, and ignition switch 18 is input to the motor control device 20.
The motor control device 20 includes a drawing amount detection unit 21, a stop time measurement unit 22, a first motor control unit 23, a winding amount detection unit 24, and a second motor control unit 25.

  The pull-out amount detection means 21 sets the pull-out amount of the webbing 5 when the ignition switch 18 is turned on (hereinafter abbreviated as “ignition on”) as zero, and after the ignition switch 18 is turned on (hereinafter abbreviated as “after ignition-on”). ) At the present time of the webbing 5 is detected. In other words, the pull-out amount detection means 21 sets the rotation position of the belt reel 11 detected by the rotation angle sensor 15 when the ignition is turned on as a reference position (hereinafter referred to as “starting reference position”), and after the ignition is turned on. The amount of pull-out from the starting reference position is detected.

  The stop time measuring means 22 measures the time (hereinafter referred to as “stop time”) during which the stop of the webbing 5 is stopped after the webbing 5 is started to be pulled out. Note that whether or not the webbing 5 is stopped can be determined based on, for example, the output of the rotation angle sensor 15. If the output value of the rotation angle sensor 15 is not changed, the webbing 5 is stopped. It is determined that

  When the webbing 5 has been pulled out after the webbing 5 has been pulled out, the first motor control unit 23 determines that the stop time measured by the stop time measuring unit 22 is during the webbing 5 being pulled out. When the waiting time set in accordance with the amount of withdrawal detected by the amount of withdrawal detection means 21 is reached, the motor 14 is controlled to be driven in the webbing take-up direction.

  The winding amount detection means 24 sets the winding amount of the webbing 5 when the buckle switch 17 detects the switching from the wearing state of the webbing 5 to the non-wearing state (hereinafter referred to as the buckle release) as zero, The winding amount of the webbing 5 is detected. In other words, the winding amount detection means 24 sets the rotation position of the belt reel 11 detected by the rotation angle sensor 15 when the buckle is released as a reference position (hereinafter referred to as “cancellation reference position”), and The amount of rewind from the reference position at the time of release is detected.

  The second motor control means 25 drives the motor 14 in the webbing take-up direction when the buckle switch 17 detects that the webbing 5 is switched from the wearing state to the non-wearing state (that is, when the buckle is released). When the winding of the webbing 5 is stopped, the motor 14 is stopped, and when the winding amount of the webbing 5 detected by the winding amount detection means 24 at the stoppage is less than a predetermined amount corresponding to the total storage of the webbing 5, the motor 14 is stopped. 14 is redriven in the webbing take-up direction.

Next, the winding control of the webbing 5 by the motor control device 20 of the seat belt device 1 will be described with reference to the flowchart of FIG. Note that the flowchart of FIG. 7 includes winding control when the webbing 5 is stopped and winding control when the buckle is released.
First, in step S101, it is determined whether or not the detection signal of the buckle switch 17 has been switched from on to off. Here, switching of the detection signal of the buckle switch 17 from on to off means release of the buckle.
If the determination result in step S101 is “YES”, the process proceeds to step S121, and if the determination result in step S101 is “NO”, the process proceeds to step S102. Here, step S102 and subsequent steps are winding control when the webbing 5 is stopped, and steps S121 and subsequent steps are winding control when the buckle is released.

First, the winding control performed when the webbing 5 is stopped after step S102 will be described.
In step S102, it is determined whether or not the ignition switch 18 is turned on. When the ignition switch 17 is turned on, it can be determined that it is immediately before the occupant wears the webbing 5. Note that the process of step S102 may be a determination as to whether or not the door close to the seat belt device 1 has been opened, instead of determining whether or not the ignition switch 17 is on.

If the determination result in step S102 is “YES”, the process proceeds to step S103, and the rotation position of the belt reel 11 detected by the rotation angle sensor 15 when the ignition is on is set (stored) as the reference position at start-up.
Next, proceeding to step S104, the amount of pull-out from the starting reference position at the present time after the ignition is turned on is detected, and it is determined whether or not the amount of pull-out is smaller than a predetermined value A (for example, 400 mm). That is, it is determined whether or not the current pulling amount of the webbing 5 when the ignition pulling amount is zero is smaller than the predetermined value A.

  If the determination result in step S104 is “NO”, that is, if the webbing 5 pull-out amount is A or more, it is determined that the occupant P has a high willingness to wear the webbing 5, and the webbing 5 needs to be wound up. Since there is no, proceed to return.

  If the determination result in step S104 is “YES”, that is, if the webbing 5 pull-out amount is smaller than A, the process proceeds to step S105 to determine whether or not the webbing 5 pull-out is stopped. Whether or not the drawing of the webbing 5 is stopped is, for example, when the detection signal of the rotation angle sensor 15 is changing over time, the drawing of the webbing 5 is continuing, and the detection signal of the rotation angle sensor 15 is If the time has not changed, it can be determined that the webbing 5 has been pulled out.

  If the determination result in step S105 is “NO”, that is, if the webbing 5 is continuously pulled out, it is determined that the occupant P is highly willing to wear the webbing 5, and the webbing 5 needs to be wound up. Since there is no, proceed to return.

  If the determination result in step S105 is “YES”, that is, if the webbing 5 withdrawal amount is less than A and the webbing 5 withdrawal is stopped, the process proceeds to step S106, and the webbing 5 withdrawal It is determined whether or not the withdrawal amount is larger than a predetermined value B set in advance and smaller than a predetermined value C set in advance. The magnitude relationship between the predetermined values A, B, and C is B <C <A.

Here, the predetermined values A, B, and C will be described.
If the webbing 5 is stopped after the webbing 5 has been pulled out but has not reached the predetermined value A, the occupant P reverses the willingness to wear the webbing 5 and the tongue 8 However, it is considered that the webbing 5 is not completely stored in the retractor 4 due to the urging force of the spring 12, and the webbing 5 and the tongue 8 are caught somewhere.

For example, as shown in FIG. 5, the minimum pull-out amount B of the webbing 5 when the tongue 8 is caught in the door opening 90 of the vehicle body is almost determined by the vehicle (for example, B = 40 mm), and as shown in FIG. The minimum pull-out amount C of the webbing 5 when the tongue 8 is hooked on a door striker (not shown) which is a well-known door lock mechanism provided in the door opening 90 is substantially determined by the vehicle (for example, C = 150 mm). Here, if the hand is released from the tongue 8 when the webbing 5 is mounted, the webbing 5 is wound around the retractor 4 only by the urging force of the spring 12, so that the winding force becomes weaker as the winding of the webbing 5 proceeds. To go. When the webbing 5 is pulled out from B to C, the winding force by the spring 12 is weakened, and the webbing 5 cannot be wound. The predetermined values B and C in step S106 are values set in this way.
On the other hand, the range in which the webbing 5 pull-out amount is larger than the predetermined value C and not more than the predetermined value A (for example, 400 mm) is a range in which the tongue 8 is highly likely to be caught by the door striker.

Returning to the flowchart of FIG. 7, if the determination result in step S106 is “YES”, that is, if the webbing 5 withdrawal amount is larger than the predetermined value B and smaller than the predetermined value C, the process proceeds to step S107.
If the webbing 5 pull-out amount is larger than the predetermined value B and smaller than the predetermined value C, it is highly possible that the tongue 8 is caught by the door opening 90 or the door striker. T1 (for example, 2 seconds), and it is determined whether the stop time of the webbing 5 is equal to or longer than the waiting time t1.
If the determination result in step S107 is “NO”, the process returns to step S105. If the determination result in step S107 is “YES”, the process proceeds to step S109, and the motor 14 is moved in the webbing take-up direction. Driven to wind the webbing 5 by the driving force of the motor 14 (storage operation).

  In other words, when the webbing 5 is pulled out in a range larger than the predetermined value B and smaller than the predetermined value C, and when the webbing 5 is pulled out, the tongue 8 is caught by the door opening 90 and the spring 12 There is a high possibility that the webbing 5 cannot be wound with the winding force, and since the pull-out amount of the webbing 5 is small, it is determined that the occupant P is less willing to wear the webbing 5, and the waiting time is reduced. The motor 14 is driven when the waiting time t1 when the stopping time of the webbing 5 reaches a short waiting time t1 is set short, and the webbing 5 is forcibly taken up. By performing the forced winding, the possibility that the tongue 8 is pinched by the door 91 is reduced.

On the other hand, if the determination result in step S106 is “NO”, that is, if the webbing 5 withdrawal amount is equal to or less than the predetermined value B or greater than the predetermined value C, the process proceeds to step S108.
In step S108, the standby time is set to a time t2 (for example, 3 seconds) longer than t1, and it is determined whether or not the stop time of the webbing 5 is equal to or longer than the standby time t2.
If the determination result in step S108 is “NO”, the process returns to step S105. If the determination result in step S108 is “YES”, the process proceeds to step S109, and the motor 14 is driven in the webbing take-up direction. The webbing 5 is wound up by the driving force of the motor 14 (storage operation).

  That is, when the webbing 5 is pulled out to a predetermined value B or less and the webbing 5 is being pulled out, it is unlikely that the tongue 8 is caught by the door opening 90 or the door striker. Since the necessity for winding is low, the standby time is set to be relatively long, and when the stop time of the webbing 5 reaches the standby time t2, the motor 14 is driven to forcibly wind the webbing 5.

  In addition, when the webbing 5 is pulled out in a range larger than the predetermined value C and smaller than the predetermined value A and the webbing 5 is pulled out, there is a high possibility that the tongue 8 is caught by the door striker. On the other hand, since there is a possibility that the occupant P is not released from the tongue 8 during wearing, the occupant P is compared with the case where the amount of the webbing 5 pulled out is in the range from the predetermined value B to the predetermined value C. It can be determined that the willingness to wear the webbing 5 is high. Therefore, in this case, the standby time is set to t2 longer than t1, and when the stop time of the webbing 5 reaches a slightly longer standby time t2, the motor 14 is driven to forcibly wind the webbing 5, The possibility that the tongue 8 is caught between the doors 91 is reduced.

  Here, the reason why the waiting time is set to t2 longer than t1 is as follows. When the occupant P has a willingness to wear and temporarily stops pulling out the webbing 5 while holding the tongue 8 in the middle of wearing, the motor 14 is driven when trying to pull out the webbing 5 to continue the wearing operation. When the webbing 5 is wound, the winding force by the motor 14 becomes resistance when the occupant P pulls out the webbing 5, and gives the occupant P a sense of incongruity. Therefore, by setting a longer standby time, the timing of the webbing winding by driving the motor 14 is delayed, and the possibility that the winding resistance by the motor 14 is generated when the webbing 5 is pulled out by the passenger P is reduced. It suppresses giving a sense of incongruity to P.

Returning to the flowchart of FIG. 7, the process proceeds from step S109 to step S110 to determine whether or not the energization current of the motor 14 detected by the current sensor 16 exceeds a specified value (for example, 3 amperes).
If the determination result in step S110 is “NO”, the process returns to step S109 and the drive of the motor 14 is continued.
If the determination result in step S110 is “YES”, the process proceeds to step S111, the motor 14 is stopped, and the process proceeds to return. That is, when the energization current of the motor 14 exceeds the specified value, the winding resistance increases to a state where the webbing 5 cannot be wound any more, and it is determined that the webbing 5 has stopped. Stop.
If the determination result in step S102 is “NO”, the process proceeds to return.

Next, the winding control at the time of releasing the buckle performed after step S121 will be described.
In step S121, the rotation position of the belt reel 11 detected by the rotation angle sensor 15 when the detection signal of the buckle switch 17 is switched from ON to OFF (that is, when the buckle is released) is set (stored). ).
In step S122, the motor 14 is driven in the webbing take-up direction, and the webbing 5 is taken up by the driving force of the motor 14 (storage operation).
Next, it progresses to step S123 and it is determined whether the energization current of the motor 14 detected by the current sensor 16 exceeds a specified value (for example, 3 amperes).
If the determination result in step S123 is “NO”, the process returns to step S122 and the drive of the motor 14 is continued.

  If the determination result in step S123 is “YES”, the process proceeds to step S124, the motor 14 is stopped, and the process proceeds to step S125. That is, when the energization current of the motor 14 exceeds the specified value, the winding resistance increases to a state where the webbing 5 cannot be wound any more, and it is determined that the webbing 5 has stopped. Stop.

Next, proceeding to step S125, the amount of winding from the reference position at the time of release after the buckle is released is detected, and this amount of winding is preset as the amount of winding when the webbing 5 is fully stored. It is determined whether or not a predetermined amount D (for example, 600 mm) or more. That is, it is determined whether or not the current winding amount of the webbing 5 when the winding amount of the webbing 5 at the time of releasing the buckle is zero is equal to or greater than a predetermined amount D corresponding to the total storage of the webbing 5.
If the determination result in step S125 is “YES”, it is determined that all the webbing 5 has been stored, and the process proceeds to return.

  On the other hand, if the determination result in step S125 is “NO”, that is, if the winding amount of the webbing 5 is less than the predetermined value D, the webbing 5 is not fully stored, and the webbing 5 is in the middle of winding. It is determined that (including the tongue 8) is caught in any part of the vehicle interior (for example, the seat 2), and the process proceeds to step S126, where the motor 14 is redriven in the webbing take-up direction. Until the value exceeds the specified value, the webbing 5 is taken up again by the driving force of the motor 14 (re-housing operation), and the process proceeds to return.

  As described above, the seatbelt device 1 detects the amount of webbing 5 withdrawn from the time when the seatbelt device 1 is activated, measures the stop time when the webbing 5 is stopped, and the stop time. However, since the motor 14 is driven in the webbing take-up direction and the webbing 5 is taken up when the waiting time set in accordance with the pull-out amount while the webbing is stopped, the wearing of the webbing 5 is stopped halfway. In this case, it is possible to reduce the state where the tongue 8 is caught in the door opening 90. As a result, it is possible to prevent the door 91 from being closed while the tongue 8 is caught in the door opening 90.

  Further, the waiting time t2 set when the webbing 5 withdrawal amount while the webbing 5 withdrawal is stopped is outside the predetermined range (C or more) is within the predetermined range (B to C range). Since it is longer than the set waiting time t1, it is possible to reduce the possibility of winding resistance generated by the motor 14 when the occupant P pulls out the webbing 5, and to prevent the occupant P from feeling uncomfortable. it can.

  Further, when the buckle release is detected, the motor 14 is driven in the webbing winding direction, the winding amount of the webbing 5 at the time of releasing the buckle is set to zero, and the winding amount of the webbing 5 at the present time is detected. When the winding is stopped, the motor 14 is stopped. When the winding amount of the webbing 5 is less than a predetermined amount corresponding to the total storage of the webbing 5 at the time of stopping, the motor 14 is driven again in the webbing winding direction. Since the winding of the webbing 5 is performed again, it is possible to reduce the catch at the time of storing the webbing 5 after the buckle is released.

[Other Examples]
The present invention is not limited to the embodiment described above.
For example, the specific numerical values of the predetermined values A, B, C, and D in the above-described embodiments are merely examples, and appropriate numerical values can be adopted.

DESCRIPTION OF SYMBOLS 1 Seat belt apparatus 2 Seat 5 Webbing 11 Belt reel 12 Spring (biasing member)
14 Motor 17 Buckle switch (Wearing state detection means)
21 Pull-out amount detection means 22 Stop time measurement means 23 First motor control means 24 Winding amount detection means 25 Second motor control means P Crew

Claims (3)

A belt reel wound with a webbing that restrains an occupant seated on the seat;
A biasing member that biases the belt reel in a direction of winding the webbing;
A motor capable of transmitting a driving force to the belt reel in the direction of winding the webbing;
Withdrawal amount detection means for detecting the webbing withdrawal amount at the present time after activation with the webbing withdrawal amount at the time of activation as zero,
Stop time measuring means for measuring a stop time when the webbing withdrawal is stopped;
When the webbing withdrawal is stopped, the stop time measured by the stop time measuring unit is set according to the webbing withdrawal amount detected by the withdrawal amount detection unit while the webbing withdrawal is stopped. First motor control means for driving the motor in the webbing take-up direction when the waiting time is reached;
A seat belt device comprising:   The standby time that is set when the webbing pull-out amount detected by the pull-out amount detection means while the webbing pull-out is stopped is outside the predetermined range, than the standby time that is set when the webbing pull-out amount is within the predetermined range. The seat belt device according to claim 1, wherein the seat belt device is also long. Wearing state detection means for detecting the wearing state and the non-wearing state of the webbing;
A winding amount detecting means for detecting the winding amount of the webbing at the present time, assuming that the winding amount of the webbing when the switching from the wearing state of the webbing to the non-wearing state is detected by the wearing state detection unit; ,
The motor is driven in the webbing take-up direction when the wearing state detection means detects a change from the worn state of the webbing to the non-worn state, and the motor is stopped when the winding of the webbing is stopped. A second motor for re-driving the motor in the webbing take-up direction when the take-up amount of the webbing detected by the take-up amount detection means at the time of stoppage is less than a predetermined amount corresponding to the total storage of the webbing Control means;
The seat belt device according to claim 1, further comprising:

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