JP5508746B2 - Seat belt device - Google Patents

Description

  The present invention relates to a seat belt device that is provided in a vehicle such as an automobile and that restrains and protects an occupant with a seat belt.

  Conventionally, a seat belt device for restraining an occupant has been provided in a vehicle seat to prevent the occupant from jumping forward due to inertial force when a large deceleration acts on the vehicle such as a sudden stop or collision of the vehicle. Equipped. In recent years, Japan has been required to wear a seatbelt for the rear seat, but there are concerns that the rate of wearing is still low.

  Many of the seat belts in the rear seats of vehicles in Japan are two-point seat belts that have only a lap belt that restrains the occupant's waist. However, within the grace period up to 2012, all seat belts are required to be changed to three-point seat belts with shoulder belts that restrain the upper body of the occupant in the shape of a brush. Therefore, in the future, in order to improve the wearing rate, a three-point seat belt device that is easy to wear for the rear seat is desired.

  The rear seat three-point seat belt is generally mounted on the vehicle through the following exemplified route. When the seat belt is not worn, the seat belt is unwound from the retractor that can be unwound, and descends from the back of the seat back (back) along the front surface of the seat back. And it penetrates a sheet | seat and is connected with the belt anchor fixed to the sheet | seat lower part.

  At the time of wearing, by pulling the tongue slidably attached to the seat belt, the seat belt is unwound from the retractor, and the tongue is locked to the buckle on the opposite side of the seat across the occupant. Since the retractor winds up the seat belt without loosening, the seat belt is unwound or wound up in accordance with the movement of the occupant, and keeps in close contact with the occupant. In the event of an emergency such as a sudden stop or a collision, the seat belt cannot be unwound from the retractor, and the occupant is restrained.

  As described above, the seat belt is lowered along the front surface of the seat back before being mounted. Therefore, when the occupant grips the seat belt, for example, the seated body is extremely twisted, and the seat belt is gripped by a hand far from the seat belt.

  It can be considered that the seat belt before being mounted in such a place where it is difficult to take out is one reason that the seat belt wearing rate of the rear seat does not increase.

  Patent Document 1 and Patent Document 2 disclose a technique for estimating the occupant's intention to wear a seat belt using a seating sensor or a door sensor and transporting the tongue from a “retracted position” to a “removed position” that is easier to take out. Yes. Patent Document 3 and Patent Document 4 describe a seat belt reacher that detects the presence of an occupant with a 3D camera and sends out a tongue.

JP 2006-131089 A Japanese Patent Laid-Open No. 4-103451 JP 2008-129948 A JP 2008-261749 A

  However, an occupant seated on a seat does not always wear a seat belt. An occupant who has only boarded the vehicle temporarily except for moving to the destination after getting on the vehicle will get off before the vehicle departs after the errand is completed. In the case of the techniques described in Patent Literature 1 to Patent Literature 4, even if such a passenger who only gets on temporarily is detected, the tongue moves to a so-called “extraction position” that is easy to take out, and the passenger who is about to get off the vehicle Get in the way.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a seat belt device capable of estimating the occupant's intention of wearing the seat belt and moving the seat belt to a position where it can be easily taken out by a more reliable method. .

  In order to solve the above problems, a typical configuration of a seat belt apparatus according to the present invention includes a belt moving means for moving the seat belt to a predetermined take-out position or a non-take-out position, and a tongue attached to the seat belt. A belt movement comprising: a buckle moving means for moving a buckle to be stopped to a predetermined storage position or a use position by an occupant operation; and a buckle position detection means for detecting whether the buckle is in the storage position or the use position. The means is characterized in that when the buckle position detecting means detects that the buckle is in the use position, the seat belt is moved to the take-out position.

  According to said structure, a passenger | crew's willingness to mount | wear a seatbelt can be estimated more reliably by detecting the position of the buckle determined by a passenger | crew's operation. Therefore, it is easy for a passenger who has been estimated to wear the seat belt to move the seat belt to a position where it can be easily taken out, and for a passenger who does not, the tongue remains in the retracted position, preventing the passenger from getting on and off. There is nothing.

  The seat belt device further includes occupant detection means for detecting that an occupant is seated on the seat, and the belt moving means is provided on the condition that the occupant detection means detects that the occupant is seated on the seat. As an alternative, the seat belt may be moved to the take-out position.

  According to the above configuration, when no occupant is seated on the seat and there is no need to attach the seat belt, the belt moving means does not move the seat belt to the take-out position. For example, even if a person in the front seat operates the buckle of the rear seat to move it to the use position, the belt moving means does not move by itself. Only when there is an occupant in the rear seat, the occupant detection means for the rear seat detects the occupant and the seat belt moves to the take-out position.

  The seat belt device further includes an occupant detection unit that detects that the occupant is seated on the seat, and the buckle moving unit receives the operation for moving the buckle to the use position, and the occupant is seated on the seat. The buckle may be moved to the use position when the occupant detection means detects that the vehicle is operating.

  According to the above configuration, both the buckle and the tongue move only when the two conditions of “operation” for moving the buckle to the use position and the seating of the occupant are met. Therefore, for example, even if a person in the front seat performs an operation for moving the buckle of the rear seat to the use position, the seat belt does not move to the take-out position, and the buckle itself does not move to the use position. That is, neither moves.

  The take-out position of the seat belt may be in front of the seat back. This is because it is easy for the passenger to take out the seat belt in front of the seat back.

  The use position and the storage position of the buckle may be a position where the buckle stands up from the seat surface of the seat and a position where the buckle tilts on the seat surface of the seat, respectively. This is because the buckle that stands up for the occupant easily locks the tongue when the seat belt is worn, and the tilted buckle does not interfere with the occupant's buttocks when the seat belt is not worn.

  The use position and the storage position of the buckle may be a position where the buckle protrudes from the seat back and a position where the buckle is embedded in the seat back, respectively. This is because the buckle protruding for the occupant easily locks the tongue when the seat belt is worn, and the buried buckle does not interfere with the occupant's back when the seat belt is not worn.

  ADVANTAGE OF THE INVENTION According to this invention, the seatbelt apparatus which can estimate the passenger | crew's willingness to wear a seatbelt by a more reliable method, and can move a seatbelt to the position which is easy to take out can be provided.

1 is a perspective view illustrating a first embodiment of a seat belt device according to the present invention. It is the perspective view which looked at FIG. 1 from another angle, and is a figure which illustrates the belt presenter contained in a seatbelt apparatus. It is a schematic diagram which illustrates the movement range of the buckle of the seatbelt apparatus of FIG. It is a figure which illustrates the detailed structure which implement | achieves the push lock and push open of FIG. It is a schematic diagram which illustrates the operation | movement of the 1st Embodiment of this invention. It is a flowchart which illustrates operation | movement of the 1st and 2nd embodiment of this invention. It is a figure which illustrates 2nd Embodiment of the seatbelt apparatus by this invention. It is the block diagram and flowchart which illustrate 3rd Embodiment of the seatbelt apparatus by this invention. It is a figure which illustrates 4th Embodiment of the seatbelt apparatus by this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(First embodiment)
FIG. 1 is a perspective view illustrating a first embodiment of a seat belt device according to the present invention. FIG. 1A is an overall view of a rear seat of the vehicle, and FIG. 1B is a partially enlarged view of FIG. The seat belt device 100 has a bilaterally symmetric configuration and is provided in the rear seat 102 of the vehicle.

  The seat belt device 100 includes a buckle stay 110 that extends from a pair of buckles 104 and is pivotally supported by a vehicle body at an end portion 106. The buckle stay 110 serves as a buckle moving means that moves (rotates) the buckle 104 that locks the tongue 111 to a predetermined storage position or use position (see FIG. 3) by the operation of the occupant. A base member 112 is provided on the vehicle body. The base member 112 includes a bottom portion 112A fixed to the vehicle body with bolts 114 and the like, and a pair of upright wall portions 112B formed on both sides of the bottom portion 112A. Including.

  The buckle stay 110 rotates around a rotation shaft attached between the standing wall portions 112 </ b> B while being supported by the base member 112, and appears and disappears from a hole 118 provided in the rear seat 102. A portion hidden behind the hole 118 and not visible is indicated by a broken line.

  FIG. 2 is a perspective view of FIG. 1 as seen from another angle, and is a diagram illustrating a belt presenter 120 that constitutes the seat belt device 100. The belt presenter 120 is an example of a belt moving unit that automatically moves the seat belt 122 to a predetermined extraction position (FIG. 2B) or a non-extraction position (FIG. 2A).

  As shown in FIG. 2, the belt presenter 120 is an “H” -shaped member provided in the seat back 124, and a columnar column portion is connected to the center of each of the upper and lower column portions, and the hole 126. It is buried in. The belt presenter 120 is attached so as to be rotatable about a lower cylindrical portion as a rotation axis. When the belt presenter 120 rotates, the seat belt 122 moves from the non-extraction position (FIG. 2A) to the extraction position (FIG. 2B).

  The “non-removal position” of the seat belt 122 refers to the position illustrated in FIG. 2A where the seat belt 122 is along the surface of the seat back 124. The seat belt in such a position does not interfere with passengers getting on and off. On the other hand, the “take-out position” of the seat belt 122 is the front of the seat back 124 as illustrated in FIG. The seat belt 122 moved to the front of the seat back 124 is easily taken out by the passenger. Since the tongue 111 slidably attached to the seat belt 122 also moves forward together with the seat belt 122, the occupant grips the tongue 111 and engages the buckle 104 as it is, so that the seat belt 122 can be attached very easily. it can.

  The belt presenter 120 in this embodiment is merely an example, and the seat belt 122 may be moved to the take-out position in front of the seat back by any known means. For example, the technique described in Patent Document 2 may be applied.

  FIG. 3 is a schematic view illustrating the movement range of the buckle 104 of the seat belt device 100 of FIG. The seat belt device 100 includes an upper limit positioning unit that restricts the rotation of the buckle stay 110 in the standing direction to a predetermined upper limit position (use position; FIG. 3A) illustrated in FIG. As illustrated in FIG. 3, the upper limit positioning means may be realized by a claw 110C formed on the buckle stay 110 and a claw 112C formed on the base member 112, and by engaging the claw 110C and 112C. Then, the rotation of the buckle stay 110 is limited to the use position at a predetermined angle (FIG. 3A).

  The buckle stay 110 is urged to rotate in a direction to stand up from the vehicle body by a torsion spring 200 wound around a rotation shaft. After a force against the torsion spring 200 is applied to reach the lower limit position (FIG. 3B) from the upper limit position (FIG. 3A), the buckle stay 110 is retracted above the lower limit position (FIG. c)). When the buckle stay 110 is pushed down from the retracted position to the lower limit position, the buckle stay 110 is unlocked and returns to the upper limit position.

  As described above, the usage position of the buckle 104 is a position (FIG. 3A) where the buckle 104 stands up from the seating surface of the rear seat 102. The buckle that stands up for the occupant is easy to lock the tongue when the seat belt is worn. On the other hand, the storage position of the buckle 104 is a position (FIG. 3C) where the buckle tilts on the seating surface of the rear seat 102. The tilted buckle does not get in the way of contacting the occupant's buttocks when the seat belt is not worn. In the present embodiment, the buckle in the storage position is almost buried in the hole 118 as illustrated in FIG.

  In this way, the buckle 104 of the seat belt device 100 is moved (pushed) to the retracted position (FIG. 3C) that does not obstruct the occupant when not in use, by the same simple operation that the buckle 104 is pushed down and then released. It is possible to move (push open) to an appropriate use position (FIG. 3A) during use. A mechanism for realizing such push lock / push open will be described below.

  In the present embodiment, as illustrated in FIG. 3, the spring 208 (see FIG. 4) is brought into contact with the buckle stay 110 while the buckle stay 110 is rotated in the tilting direction and pushed back in the direction in which the buckle stay 110 is raised. ) Is pushed. In the present embodiment, the push button 210 also serves as a lower limit positioning unit for the buckle stay 110.

  The seat belt device 100 includes a lock bar 220. As illustrated in FIG. 3A, one end of the lock bar 220 is rotatably supported by the push button 210, and is rotatably supported at a fixed position 220A at a substantially center. When the push button 210 is pushed by the buckle stay 110, the other end 220B of the lock bar 220 rises, and as illustrated in FIGS. 3B and 3C, between the retracted position and the lower end position at the other end 220B. The buckle stay at can be locked. The buckle stay 110 and the base member 112 are formed with grooves 110E and 112E, respectively. When these positions coincide, an integral wide groove is formed and the other end 220B of the lock bar 220 is fitted. And lock. Since the groove 110E has a margin in length, the buckle stay 110 between the retracted position and the lower end position can be locked.

  The buckle stay 110 that is not in contact with the push button 210 (FIG. 3A) is in contact with the push button 210 while being rotated in the tilting direction by the occupant's operation, and is further moved to the lower limit position (FIG. 3B). ), The upward movement of the push button 210 is restricted, and the buckle stay 110 is locked in the retracted position (FIG. 3C) by the lock bar 220. Further, after the buckle stay 110 reaches the lower limit position (FIG. 3B) from the retracted position (FIG. 3C) by the operation of the occupant, the push button 210 moves upward and the buckle by the lock bar 220 is moved. The lock of the stay 110 is released.

  Since the above-described upward movement limitation and movement of the push button 210 are forcibly performed, the lock of the buckle stay 110 associated therewith is also forcibly maintained or released. That is, the lock by the lock bar 220 is a strong one that does not come off even if the buckle stay 110 returns to the direction in which the buckle stay 110 stands up by the torsion spring 200.

  FIG. 4 is a diagram illustrating a detailed structure for realizing the push lock / push open of FIG. As illustrated in FIG. 4A, the push button 210 is attached with a guided member 230 that moves up and down together with the push button 210 and determines the position of the push button 210 by restricting the vertical movement. . The guided member 230 is a pin-shaped member having a protruding portion 230A that protrudes and is urged in a substantially horizontal direction, that is, a direction from the paper surface of FIG. 4A toward the reader. Any means for this energization may be used.

  The surface member 260 has an annular groove 250 for sliding the protruding portion 230 </ b> A, thereby guiding the guided member 230. As illustrated in FIG. 4A, the face member 260 is placed inside the push button 210 so that the annular groove 250 faces.

  FIG. 4B is an enlarged view of the surface member 260 of FIG. The annular groove 250 is formed around the raised hill portion 252 at the center, and is slid so as to circulate in the protruding portion 230A of the guided member 230 in one direction due to its outline, steps on the track, and undulations. Move.

  Specifically, the projecting portion 230A first slides the undulating annular groove 250 so as to gently climb from the low point 254 to the high point 256, and is dropped to the low point 262 by the step 258 in the reverse direction. Is prevented from sliding. This low point 262 corresponds to the lower limit position (FIG. 3B). Here, as the buckle stay 110 rotates in the standing direction, the protruding portion 230 </ b> A falls to a lower point 266 beyond the step 264. This point 266 corresponds to the storage position (FIG. 3C) and is in a push-locked state. When force is again applied to the buckle stay 110 to push it to the lower limit position and the force is released, the protrusion 230A gently climbs from the low point 266 to the high point 268, exceeds the step 270, and reaches the upper limit position (FIG. 3 (a)). Return to the point 254 corresponding to. This is the operation during push-open.

  By guiding the guided member 230 in this way and circulating the annular groove 250 in one direction, the buckle stay 110 is moved in a predetermined cycle of the upper limit position, the lower limit position, the storage position, the lower limit position, and the upper limit position. It is possible.

  As illustrated in FIG. 3, the push button 210 is connected to a buckle position detection unit 280 that detects whether the buckle 104 is in the storage position or the use position. In the present embodiment, a contact (not shown) that is electrically connected when the push button 210 in FIG. 4 is pushed down to a position corresponding to the storage position is used. The buckle position detection means 280 electrically detects that this contact is connected. However, any mechanism for the buckle position detection means 280 to detect the position of the buckle 104 may be used, and is not limited to the mechanism in the present embodiment.

  As conceptually shown in FIG. 3, the buckle position detecting means 280 is connected to the belt presenter 120 and steadily transmits a signal 282 indicating the position of the buckle 104 to the belt presenter 120.

  FIG. 5 is a schematic view illustrating the operation of the first embodiment of the present invention, and FIG. 6 is a flowchart illustrating the operation of the first and second embodiments of the present invention. The operation of the first embodiment is as illustrated in FIG. First, in the initial state, as illustrated in FIG. 5A, the buckle 104 is in the retracted position (FIG. 3C), and the seat belt 122 is in the non-removing position (FIG. 2A) (step S400). ). When the operation of pushing down the buckle 104 is performed, the buckle 104 moves to the lower limit position (FIG. 3B) (step S402). When the pushing force is lost, as shown in FIG. 5B, the buckle 104 protrudes. To the use position (FIG. 3A) (step S404).

  The movement of the buckle 104 to the use position is detected by the buckle position detection means 280. When the buckle position detecting means 280 detects that the buckle 104 is in the use position, the belt presenter 120 receives this information as a signal 282 and moves the seat belt 122 to the take-out position as illustrated in FIG. 5B. (Step S406).

  According to said structure, a passenger | crew's intention to mount | wear a seatbelt can be estimated more reliably by detecting the position of the buckle 104 determined by a passenger | crew's operation. Therefore, the seat belt 122 (and the tongue 111) is easily moved to the take-out position for the occupant whose seat belt intention is estimated, and the seat belt 122 remains in the non-take-out position for the other occupants. It does not interfere with passengers getting on and off.

  The belt presenter 120 rotates backward and returns to its original position after about 5 seconds after rotating forward regardless of whether or not the seat belt 122 is attached. This is also to prevent the passengers from getting on and off. The time-out period may be freely determined. Instead of timing out, the engagement between the buckle 104 and the tongue 111 may be detected, and the belt presenter 120 may be rotated backward to return it to its original state.

(Second Embodiment)
FIG. 7 is a diagram illustrating a second embodiment of the seat belt device according to the present invention. This embodiment basically has the same configuration as that of the first embodiment. Only differences from the first embodiment will be described below.

  The seat belt device in the present embodiment further includes a seat weight sensor 310. The seat weight sensor 310 serves as occupant detection means for detecting that the occupant 314 is seated on the rear seat 102 by measuring a load applied to the rear seat 102. As the seat weight sensor 310, for example, a seat weight sensor described in JP-A-2007-10508 may be used. As illustrated in FIG. 7, the seat weight sensor 310 is connected to the AND circuit 284, and constantly transmits a signal 312 indicating the presence or absence of an occupant to the AND circuit 284. Further, a signal 282 indicating the position of the buckle 104 arriving from the buckle position detecting means 280 is also transmitted to the AND circuit 284. The AND circuit 284 is connected to the belt presenter 120 and activates the belt presenter 120 when the signal 312 indicates “present” and the signal 282 indicates “use position” as the buckle position.

  FIG. 6B is a flowchart illustrating the operation of this embodiment. The difference from the first embodiment is that not only the buckle 104 is in the use position (FIG. 3A) (step S404) but also the occupant 314 is seated on the rear seat 102 by the AND circuit 284 of FIG. This is a point that the belt presenter 120 moves the seat belt 122 to the take-out position (step S406) on the condition that the seat weight sensor 310 detects that the seat belt 122 is detected ("YES" in step S410).

  According to the above configuration, when the occupant 314 is not seated on the rear seat 102 and there is no need to attach the seat belt (“NO” in step S410), the belt presenter 120 automatically takes out the seat belt 122. There is no movement. For example, even if a person in a front seat (not shown) operates the buckle 104 of the rear seat 102 to move it to the use position, the belt presenter 120 does not move by itself. Only when the occupant 314 is detected by the seat weight sensor 310 for the rear seat 102 and the occupant 314 is in the rear seat 102, the belt presenter 120 is operated and the seat belt 122 is moved to the take-out position as shown in FIG. 7B. To do.

  The occupant detection means is not limited to the seat weight sensor 310, and any means may be used. For example, the rear seat 102 may be photographed by a camera provided in the vehicle, and the occupant 314 may be detected.

  In the first and second embodiments, it may be controlled to detect that the engagement between the buckle 104 and the tongue 111 is released and to return to step S404 in FIGS. 6 (a) and 6 (b).

  Furthermore, a mechanism may be provided to prevent the buckle 104 from returning to the retracted position while the tongue 111 is locked to the buckle 104. This is because it is not preferable that the buckle returns to the retracted position while wearing the seat belt.

(Third embodiment)
FIG. 8 is a block diagram and a flowchart illustrating a third embodiment of the seat belt device according to the invention. This embodiment basically has the same configuration as that of the second embodiment. Only differences from the second embodiment will be described below.

  The feature of this embodiment is that a push button limiting means 320 is provided as illustrated in FIG. The push button restricting means 320 receives a signal 312 indicating the presence or absence of the occupant 314 from the seat weight sensor 310, and makes the push button 210 incapable of being pushed down when the occupant 314 is not present. Any mechanical or electrical means may be used for the mechanism that makes the push button 210 incapable of being pushed down.

  FIG. 8B is a flowchart illustrating the operation of this embodiment. Differences from the second embodiment are as follows. When the buckle stay 110 receives an operation for moving the buckle 104 to the use position, that is, a buckle pressing operation (step S500), the seat weight sensor 310 detects that the occupant 314 is seated on the rear seat 102. The point is to move the buckle 104 to the use position only (“YES” in step S410) (step S502). As a result, the belt presenter 120 also rotates forward to move the seat belt 122 to the take-out position.

  As described above, according to the present embodiment, both the buckle 104 and the seat belt 122 move only when two conditions of “operation” for moving the buckle 104 to the use position and the seating of the occupant 314 are satisfied. Therefore, for example, even if a person in the front seat (not shown) performs an operation for moving the buckle 104 (buckle stay 110) of the rear seat 102 to the use position, the seat belt 122 does not move to the take-out position. However, the buckle 104 itself does not move to the use position because the push button 210 does not move. That is, neither moves.

  Note that the steps in FIGS. 6 and 8B of this specification do not necessarily have to be processed in time series in the order described in the flowchart, and may include processing in parallel or by a subroutine.

(Fourth embodiment)
FIG. 9 is a view illustrating a fourth embodiment of the seat belt device according to the present invention. The configuration and operation of the seat belt device 400 in the present embodiment are basically the same as those in the first embodiment. The difference from the first embodiment is that the use position and the storage position of the buckle 104 are the position where the buckle 104 protrudes from the seat back 124 (the buckle on the back side in FIG. 9) and the buckle 104 on the seat back 124, respectively. This is the point where it is buried (the buckle on the near side in FIG. 9). The buckle 104 protruding forward in this way is also easy for the occupant to lock the tongue when the seat belt is worn. Further, the buckle 104 embedded in the seat back 124 does not get in the way of coming into contact with the back of the occupant when the seat belt 122 is not worn.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented by various methods. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  For example, the push-lock / push-open mechanism shown in FIG. 4 may be replaced with any mechanism as long as it has other similar functions.

  INDUSTRIAL APPLICABILITY The present invention can be used in a seat belt device that is provided in a vehicle such as an automobile and that restrains and protects an occupant with a seat belt.

DESCRIPTION OF SYMBOLS 100,400 ... Seat belt apparatus, 102 ... Back seat, 104 ... Buckle, 110 ... Buckle stay, 111 ... Tongue, 112 ... Base member, 114 ... Bolt, 118 ... Hole, 120 ... Belt presenter, 122 ... Seat belt, 124 ... Seat back, 200 ... Torsion spring, 208 ... Spring, 210 ... Push button, 220 ... Lock bar, 230 ... Guide member, 250 ... Annular groove, 260 ... Surface member, 280 ... Buckle position detection means, 310 ... Seat weight Sensor, 314 ... occupant, 320 ... push button limiting means

Claims (9)

Belt moving means for moving the seat belt to a predetermined take-out position or a non-take-out position;
Buckle moving means for moving a buckle that locks the tongue attached to the seat belt to a predetermined storage position or use position by an occupant operation;
Buckle position detection means for detecting whether the buckle is in the storage position or the use position;
With
The buckle position detecting means constantly transmits a signal indicating the position of the buckle to the belt moving means,
The belt moving means moves the seat belt to the take-out position when the buckle position detecting means detects that the buckle is in the use position. Further comprising occupant detection means for detecting that an occupant is seated on the seat,
The occupant detection means constantly transmits a signal indicating the presence or absence of an occupant to the belt moving means,
The seat according to claim 1, wherein the belt moving means moves the seat belt to the take-out position on condition that the occupant detection means detects that an occupant is seated on the seat. Belt device. Further comprising occupant detection means for detecting that an occupant is seated on the seat,
The occupant detection means constantly transmits a signal indicating the presence or absence of an occupant to the belt moving means,
When the buckle moving means receives an operation for moving the buckle to the use position, the buckle movement means moves the buckle to the use position when the occupant detection means detects that an occupant is seated on a seat. The seat belt device according to claim 1, wherein   The seat belt device according to any one of claims 1 to 3, wherein the seat belt is taken out in front of the seat back.   The use position and the storage position of the buckle are respectively a position where the buckle stands up from the seat surface of the seat and a position where the buckle tilts toward the seat surface of the seat. The seat belt device according to claim 1.   The use position and the storage position of the buckle are respectively a position where the buckle protrudes from a seat back and a position where the buckle is embedded in the seat back. A seat belt device according to claim 1.   The seat belt according to any one of claims 1 to 6, wherein the belt moving means returns to the original position when a time-out time elapses after the seat belt is moved to the take-out position. apparatus.   7. The belt moving means according to claim 1, wherein after the seat belt is moved to the take-out position, when the engagement between the buckle and the tongue is detected, the belt moving means returns to the original position. The seat belt device according to item.   The seat belt device according to any one of claims 1 to 8, wherein the buckle moving means moves the buckle to the storage position or the use position by pressing and releasing the buckle.

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