JP2017206060A - Seat Belt Device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt device that can easily moderate restraint by webbing when the restraint by the webbing needs to be moderated.SOLUTION: When a tongue 24 of a driver seat is inserted into a buckle 26 and speed 0 or speed equal to a prescribed threshold or less is detected and an automatic signal of full closing or full opening of a side window of the driver seat is detected (100-106), a control device controls a buckle driving portion so that a buckle is moved in an upper and front direction of a vehicle (108), which allows a driver to easily lean out of the window when paying charges in a pay parking lot, a ticketing device, a toll booth, a drive-through and the like, and giving and receiving goods and the like.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seat belt device that restrains an occupant seated on a vehicle seat by webbing.

  The seat belt device restrains the occupant by engaging the tongue inserted through the webbing with the buckle fixed to the vehicle body and mounting the webbing. As an example of the technology of the seat belt device, various technologies for facilitating the wearing of the webbing have been proposed as an example.

  For example, Patent Documents 1 and 2 propose a technology that facilitates the mounting of the webbing by configuring the buckle to be movable and moving the buckle to a position where the tongue can be easily inserted when the webbing is mounted. Yes.

JP 2010-167928 JP 2010-162995 A

  However, in Patent Documents 1 and 2, the operation of the seat belt device may be difficult and troublesome because the operation is limited by the webbing when the webbing is still worn. For example, in areas such as ticketing machines, toll booths, and drive-throughs, there are cases where a person leans forward from a window due to a failure in width adjustment or the like when exchanging charges or goods. In such a case, it is difficult to get out of the body with the webbing attached, so it is necessary to remove the tongue from the buckle, and it is troublesome because it is necessary to reattach the webbing when resuming traveling.

  The present invention has been made in view of the above facts, and an object of the present invention is to provide a seat belt device that can easily relax the restraint due to webbing when it is necessary to relax the restraint due to webbing.

  In order to achieve the above object, the invention according to claim 1 is directed to a webbing when a mitigation unit for mitigating restraint of an occupant by webbing and a predetermined mitigation condition representing a state in which the webbing impedes occupant operation are established. And a control unit that controls the relaxation unit so as to relax the restraint of the occupant.

  According to the first aspect of the present invention, the restraint of the occupant due to the webbing is eased by the relief portion. For example, as in the invention described in claim 9, the relaxation portion can relax the restraint of the passenger due to the webbing by at least one of the movement of the position of the buckle and the withdrawal of the webbing.

  And a control part controls a relaxation part so that a passenger | crew's restraint by webbing may be eased, when the predetermined relaxation condition showing the state which webbing obstructs a passenger | crew's operation | movement is satisfied. Thereby, when it is necessary to relax the restraint by webbing, the restraint by webbing can be eased easily.

  Note that, as in the invention described in claim 2, the control unit uses webbing when a predetermined termination condition for terminating relaxation of passenger restraint by webbing is satisfied after relaxation of passenger restraint by webbing is satisfied. You may further control a relaxation part so that a passenger | crew's restraint may be restored | restored. Thereby, when it is no longer necessary to relax the restraint caused by the webbing, the restraint caused by the webbing can be restored and the passenger can be restrained again by the webbing.

  The end condition is when the occupant's webbing is mounted and a vehicle speed equal to or higher than a predetermined threshold is detected or a vehicle speed within a predetermined range is detected for a predetermined time or longer as in the invention described in claim 3. The established one may be applied. The wearing of the occupant's webbing can be detected by, for example, a buckle switch. Moreover, the vehicle speed sensor can detect the detection of the vehicle speed equal to or higher than a predetermined threshold or the vehicle speed within a predetermined range that continues for a predetermined time.

  Further, as the end condition, as in the invention according to claim 4, the occupant's webbing is mounted, a vehicle speed equal to or higher than a predetermined threshold is detected or a vehicle speed within a predetermined range is detected continuously for a predetermined time period, and You may apply what is materialized when at least one of the signal which fully closes or automatically closes a window, and a predetermined area is detected. That is, to the end condition of claim 3, a signal for closing the window fully or automatically, and detection of at least one of a predetermined area may be added as a condition. For example, it is possible to detect a signal for fully opening or automatically closing the driver's seat window by detecting an increase in driving load of the power window, a window opening / closing sensor, a power window switch, or the like. A predetermined area can be detected by a communication device that communicates with a navigation device, a road-to-vehicle communication, a mobile phone with a position detection function, or the like.

  On the other hand, as the relaxation condition, as in the invention according to claim 5, a signal is detected in which the occupant's webbing is mounted, the vehicle speed is 0 or below a predetermined threshold value, and the window is fully opened or automatically opened. What is established when it is done may be applied. The wearing of the occupant's webbing can be detected by, for example, a buckle switch provided on the buckle. In addition, the vehicle speed sensor can detect a vehicle speed of 0 or less than a predetermined threshold. Further, a signal for fully opening or automatically opening the driver's seat window can be detected by detecting a driving load increase of the power window, a window opening / closing sensor, a power window switch, or the like.

  Further, as the relaxation condition, as in the invention described in claim 6, the occupant's webbing is mounted, the vehicle speed is detected as 0 or below a predetermined threshold, and a signal for fully opening or automatically opening the window is detected, And what is formed when a predetermined area is detected may be applied. That is, detection of a predetermined area may be added as a condition to the relaxation condition of claim 3. The area can be detected, for example, by a communication device that communicates with a navigation device, a road-to-vehicle communication, a mobile phone with a position detection function, or the like.

  Further, as the relaxation condition, a condition that is established when the shift operation is performed to the reverse position as in the invention described in claim 7 may be applied. That is, it becomes easier to confirm the rear by relaxing the restraint due to the webbing during the backward movement. In this case, as in the invention described in claim 8, the control unit relaxes so as to restore the restraint of the occupant by the webbing when the occupant restraint by the webbing is eased and then the shift operation is performed at a position other than the reverse position. The unit may be further controlled. Thereby, when it is no longer necessary to relax the restraint caused by the webbing, the restraint caused by the webbing can be restored and the passenger can be restrained again by the webbing.

  As described above, according to the present invention, there is an effect that it is possible to provide a seat belt device that can easily relax the restraint due to webbing when it is necessary to relax the restraint due to webbing.

1 is an overall front view showing a seat belt device according to an embodiment. It is an enlarged view of the seat buckle device part of the seat belt device concerning this embodiment. It is a block diagram which shows the structure of the control system of the seatbelt apparatus which concerns on this embodiment. It is a flowchart which shows an example of the flow of the process performed with the control apparatus of the seatbelt apparatus which concerns on this embodiment. It is a flowchart which shows the 1st modification of the flow of the process performed with the control apparatus of the seatbelt apparatus which concerns on this embodiment. It is a flowchart which shows the 2nd modification of the flow of the process performed with the control apparatus of the seatbelt apparatus which concerns on this embodiment.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall front view showing a seat belt device according to the present embodiment. FIG. 2 is an enlarged view of a seat buckle device portion of the seat belt device according to the present embodiment. In FIG. 1, the outer side in the vehicle width direction (right side of the vehicle) is indicated by an arrow OUT, and the upper side is indicated by an arrow UP.

  As shown in FIG. 1, the seat belt device 10 is mounted on a vehicle seat 12, and the front, right, and upper sides of the seat 12 are directed to the front, right, and upper sides of the vehicle, respectively. A seat cushion 12 </ b> A is provided at the lower part of the seat 12, and a seat back 12 </ b> B is provided at the rear portion of the seat 12, so that a vehicle occupant 14 can be seated on the seat 12.

  The seat belt device 10 includes a long belt-like webbing 16 (belt) having flexibility.

  The webbing 16 is wound and stored in the winding device 18 from the base end side in the longitudinal direction, and the winding device 18 is mounted on the vehicle body (or the seat 12) on the outer side in the vehicle width direction of the seat 12 and in the lower portion. While being fixed, the webbing 16 is pulled out to the vehicle front side.

  The winding device 18 is provided with a locking mechanism (not shown), and the locking mechanism is used in the event of a vehicle emergency such as when the webbing 16 is suddenly pulled out from the winding device 18 or when the vehicle is suddenly decelerated. Actuated to lock the withdrawal of the webbing 16 from the winding device 18.

  A shoulder anchor 20 is fixed to the vehicle body in the vehicle width direction outer side of the seat 12 and the upper vehicle rear side (or the seat 12), and a long rectangular insertion hole is formed in the shoulder anchor 20 so as to penetrate therethrough. Has been.

  The webbing 16 is inserted through the insertion hole of the shoulder anchor 20, and the webbing 16 is supported in a state of being folded back through the insertion hole of the shoulder anchor 20.

  Further, the front end of the webbing 16 in the longitudinal direction is supported by an anchor 22, and the anchor 22 is fixed to a vehicle body (or the seat 12) on the outer side and the lower side of the rear portion of the seat 12 in the vehicle width direction.

  A tongue 24 is provided at a portion between the shoulder anchor 20 and the anchor 22 of the webbing 16. An elongated rectangular insertion hole is formed through the tongue 24, and the webbing 16 is inserted into the insertion hole so as to be movable in the longitudinal direction.

  A seat buckle device 30 is fixed to the vehicle body (the seat 12 may be) on the inner side and the lower side of the rear portion of the seat 12. A buckle 26 is movably provided in the seat buckle device 30. The tongue 24 is detachable from the buckle 26, and the webbing 16 is pulled out from the winding device 18, and the tongue 24 is attached to the buckle 26, whereby the webbing 16 is attached to the occupant 14 seated on the seat 12. Mounted from the front.

  As a result, the webbing 16 is supported in a state where the webbing 16 is folded back through the insertion hole of the tongue 24, so that the portion between the shoulder anchor 20 and the tongue 24 of the webbing 16 (the portion on one side of the tongue 24) is shoulder webbing. 16A (shoulder belt) is attached to the shoulder and chest of the occupant 14 in an oblique direction.

  Further, a portion between the tongue 24 and the anchor 22 of the webbing 16 (portion on the other side of the tongue 24) is used as a lap webbing 16B (lap belt), and is mounted laterally on the waist of the occupant 14.

  In addition, the tongue stopper 28 which protrudes from both surfaces of the lap webbing 16B is attached to the lap webbing 16B.

  Further, the seat buckle device 30 is provided with a moving mechanism 32 for moving the position of the buckle 26. The moving mechanism 32 can move as shown in FIGS. 2A and 2B with the tongue 24 inserted into the buckle 26. In the present embodiment, the buckle 26 can be moved from the first position shown in FIG. 2A to the second position shown in FIG. Since the moving mechanism 32 can apply various well-known technologies such as various link mechanisms described in the prior art documents and the like, detailed description thereof will be omitted.

  Next, the configuration of the control system of the seat belt device 10 according to the present embodiment will be described. FIG. 3 is a block diagram showing a configuration of a control system of the seat belt device 10 according to the present embodiment.

  The seat belt device 10 includes a control device 50 as a control unit that controls the movement of the buckle 26 of the seat buckle device 30 described above.

  The control device 50 includes a computer in which a CPU 50A, a ROM 50B, a RAM 50C, and an I / O (input / output interface) 50D are connected to a bus 50E.

  The ROM 50B stores a program for controlling the movement of the buckle 26 of the seat buckle device 30, and the movement of the buckle 26 is controlled by developing the program stored in the ROM 50B in the RAM 50C and executing it by the CPU 50A. To do.

  A buckle drive unit 52, a buckle switch 54, a vehicle speed sensor 56, a power window switch 58, and a power window drive unit 59 as a relaxation unit are connected to the I / O 50D.

  The buckle driving unit 52 is composed of an actuator such as a motor, and drives the moving mechanism 32 of the seat buckle device 30 in accordance with an instruction from the control device 50 so that the buckle 26 is moved to the first position in FIG. B) to the second position.

  The buckle switch 54 is a switch provided in the buckle 26, and the switch is turned on / off depending on whether or not the tongue 24 is inserted into the buckle 26. A detection result of whether or not the tongue 24 is inserted by the buckle switch 54 is input to the control device 50.

  The vehicle speed sensor 56 detects the traveling speed of the vehicle by detecting the rotation of the output shaft of the transmission, the rotor, the hub, and the like, and outputs the detection result to the control device 50.

  The power window switch 58 is a switch for instructing opening / closing of the side window glass, and an instruction result of opening / closing of the side window glass is input to the control device 50. It is assumed that the power window switch 58 can be instructed to open automatically to automatically open the side window glass and to close auto to fully close the side window glass.

  The power window drive unit 59 is composed of an actuator such as a motor, and opens and closes the side window glass. In the present embodiment, the control device 50 detects a full open or a full close of the side window glass by detecting a load increase or the like of the power window drive unit 59, but the open / close of the window may be detected by an open / close sensor or the like.

  Note that, as indicated by a dotted line in FIG. 3, a navigation device 60, a communication device 62, a belt winding drive unit 64, a shift position sensor 66, and the like may be further connected to the I / O 50D. In this case, the navigation device 60 sets the destination of the vehicle and performs guidance from the current location to the destination. In the present embodiment, position information of the current location can be input to the control device 50 from the map information that the navigation device 60 has. The control device 50 detects from the information obtained from the navigation device 60 whether or not the current location is a predetermined area such as a toll gate, a ticket issuing machine, a toll parking lot or the like.

  The communication device 62 can communicate with at least one of the communication device provided on the road side and the mobile phone with position information, and inputs information obtained from the road side or the mobile phone with position detection function to the control device 50. The control device 50 detects whether or not the current location is a predetermined area such as a toll gate, a ticket machine, a toll parking lot, or a drive-through based on information obtained from a roadside or a mobile phone with a position detection function.

  The belt take-up drive unit 64 includes an actuator such as a motor, and takes up and pulls out the webbing 16 from and to the take-up device 18. That is, in the present embodiment, the webbing 16 can be wound or pulled out by the control device 50 controlling the belt winding drive unit 64.

  The shift position sensor 66 detects the shift position of the transmission of the vehicle and outputs the detection result to the control device 50. In the present embodiment, the control device 50 can detect backward movement or the like from the detection result of the shift position sensor 66.

  Here, the movement control of the buckle 26 of the seat buckle device 30 performed by the control device 50 will be described. The movement control of the buckle 26 is performed by executing a program stored in the ROM 50B or the like. In the present embodiment, the movement control of the buckle 26 can be applied to at least one of the driver seat and the passenger seat, but in the following, the case of the driver seat side will be described as an example.

  In areas such as paid parking lots, ticketing machines, toll booths, and drive-throughs, there are cases in which a person leans out of the window due to a failure in width adjustment, etc. In such a case, if the webbing 16 is worn (the tongue 24 is inserted into the buckle 26), it is difficult to get the body out of the window.

  Therefore, in the present embodiment, the control device 50 relaxes the restraint of the occupant by the webbing 16 when a predetermined relaxation condition indicating a state in which the webbing 16 prevents the occupant operation is satisfied.

  Specifically, the webbing 16 is in a state in which the control device 50 exchanges charges and goods such as a pay parking lot, a ticketing machine, a toll booth, and a drive-through in order to determine whether a predetermined relaxation condition is satisfied. It is detected as a condition that hinders passenger movement. When the relaxation condition is satisfied, the restraint of the occupant due to the webbing is eased by moving the buckle 26 from the first position shown in FIG. 2A to the second position shown in FIG. For example, the relaxation condition is that insertion of the tongue 24 of the driver's seat into the buckle 26 is detected, vehicle speed 0 or a vehicle speed equal to or lower than a predetermined threshold value is detected, and a driver's side window glass full open or open auto instruction is detected. This is true if Then, when the relaxation condition is satisfied, the control device 50 controls the buckle driving unit 52 so that the position of the buckle 26 moves from the first position to the second position. Thereby, the buckle 26 moves in the front upward direction of the vehicle, the restraint of the occupant by the webbing 16 is relaxed, and it is possible to easily get out of the window.

  Further, in the present embodiment, the control device 50 restores the occupant restraint by the webbing 16 when the predetermined termination condition for ending the relaxation of the restraint by the webbing is satisfied after the restraint by the webbing 16 is eased. It has become.

  More specifically, the control device 50 detects a state in which traveling is resumed and the passenger is required to be restrained by the webbing 16 in order to determine whether a predetermined end condition is satisfied. When the end condition is satisfied, the restraint of the passenger due to the webbing is restored by moving the buckle 26 from the second position shown in FIG. 2B to the first position shown in FIG. For example, the end condition is that the insertion of the tongue 24 of the driver's seat into the buckle 26 is detected, a vehicle speed that is equal to or higher than a predetermined threshold or a vehicle speed within a predetermined range that continues for a predetermined time or more, and the side window glass of the driver's seat is detected. This is true when a fully closed or closed auto command is detected. Then, when the end condition is satisfied, the control device 50 controls the buckle driving unit 52 so that the position of the buckle 26 is restored from the second position to the first position. Thereby, the buckle 26 moves to the original position, and the restraint of the occupant by the webbing 16 is resumed. Here, when the belt winding drive unit 64 is provided, the control device 50 drives the belt winding drive unit 64 to wind the webbing when the buckle 26 is restored to the first position. Good.

  Next, specific processing performed by the control device 50 of the seatbelt device 10 according to the present embodiment configured as described above will be described. FIG. 4 is a flowchart illustrating an example of a flow of processing performed by the control device 50 of the seatbelt device 10 according to the present embodiment. The process of FIG. 4 starts when an ignition switch (not shown) is turned on.

  In step 100, the control device 50 detects the states of the buckle switch 54, the vehicle speed sensor 56, and the power window switch 58 and proceeds to step 102.

  In step 102, the control device 50 determines whether or not the tongue 24 of the driver's seat is inserted in the buckle 26. The determination is made based on the state of the buckle switch 54. If the determination is negative, the process returns to step 100 and the above-described processing is repeated. If the determination is affirmative, the process proceeds to step 104.

  In step 104, the control device 50 determines whether the vehicle is stopped by determining whether the vehicle speed is 0 or less than a predetermined threshold value. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 106.

  In step 106, it is determined whether or not the control device 50 has detected a fully open or open auto signal for the side window glass of the driver's seat. In this determination, the control device 50 detects the load of the power window driving unit 59 to detect full open, and the power window switch 58 detects an open auto signal. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 108.

  In step 108, the control device 50 controls the buckle driving unit 52 so as to move the buckle 26 in the front upward direction of the vehicle, and proceeds to step 110. That is, it is determined whether the relaxation condition is satisfied by detecting each of detection of insertion of the tongue 24 of the driver's seat into the buckle 26, detection of stop of the vehicle, and full opening of the side window glass of the driver's seat or opening auto instruction. Then, when the relaxation condition is satisfied, the control device 50 controls the buckle driving unit 52 so that the position of the buckle 26 moves from the first position to the second position. Thereby, the buckle 26 moves in the front upward direction of the vehicle, the restraint of the occupant by the webbing 16 is relaxed, and it is possible to easily get out of the window.

  Next, at step 110, the control device 50 detects the states of the buckle switch 54, the vehicle speed sensor 56, and the power window switch 58 and proceeds to step 112.

In step 112, the control device 50 determines whether or not the tongue 24 of the driver's seat is inserted into the buckle 26. This determination is made based on the state of the buckle switch 54. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 114.

  In step 114, the control device 50 determines whether or not the vehicle speed is equal to or higher than a threshold value, or whether or not the vehicle speed in a predetermined range continues for a predetermined time or more. If the determination is negative, the process returns to step 110 and the above processing is repeated, and if the determination is affirmative, the process proceeds to step 116.

  In step 116, it is determined whether or not the control device 50 detects a fully closed or closed auto signal for the side window glass of the driver's seat. In this determination, the control device 50 detects the fully closed state by detecting the load of the power window driving unit 59, and detects the open auto signal from the signal of the power window switch 58. If the determination is negative, the process returns to step 110 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 118.

  In step 118, the control device 50 controls the buckle driving unit 52 so as to restore the buckle 26 to the original position, and returns to step 100 to repeat the above-described processing. That is, whether the end condition is satisfied is determined by detecting insertion of the tongue 24 of the driver's seat into the buckle 26, detection of resumption of travel, and full closing or auto close instruction of the side window glass of the driver's seat. Then, when the end condition is satisfied, the control device 50 controls the buckle driving unit 52 so as to return the buckle 26 to the first position. At this time, as described above, when the belt take-up drive unit 64 is provided, the control device 50 drives the belt take-up drive unit 64 when restoring the buckle 26 to the first position, and webbing. You may make it wind up.

  In this way, the control device 50 controls the position of the buckle 26 so that it is easy to get out of the window when paying parking lots, ticketing machines, toll gates, drive-throughs, etc. be able to. Further, when the traveling is resumed, the position of the buckle 26 is returned, so that the restraint of the occupant can be resumed. Therefore, it is not necessary to attach or detach the webbing 16 when exchanging charges or goods such as pay parking lots, ticket machines, toll booths, drive-throughs, etc., and troublesome work can be eliminated.

  Subsequently, a process performed by the control device 50 when the control device 50 is provided with the navigation device 60 or the communication device 62 and can determine that the current location is an area where the restraint of the occupant by the buckle 26 needs to be relaxed. A modification will be described. FIG. 5 is a flowchart showing a first modification of the flow of processing performed by the control device 50 of the seatbelt device 10 according to the present embodiment. Note that the process of FIG. 5 starts when an ignition switch (not shown) is turned on. Further, the same processes as those in FIG. 5 will be described with the same reference numerals.

  In step 100, the control device 50 detects the states of the buckle switch 54, the vehicle speed sensor 56, and the power window switch 58, and proceeds to step 101.

  In step 101, the control device 50 detects the current area and proceeds to step 102. The current area is detected based on information from the navigation device 60 or information obtained from a roadside device or a mobile phone with a position detection function by the communication device 62.

  In step 102, the control device 50 determines whether or not the tongue 24 of the driver's seat is inserted in the buckle 26. The determination is made based on the state of the buckle switch 54. If the determination is negative, the process returns to step 100 and the above-described processing is repeated. If the determination is affirmative, the process proceeds to step 104.

  In step 104, the control device 50 determines whether the vehicle is stopped by determining whether the vehicle speed is 0 or less than a predetermined threshold value. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 106.

  In step 106, it is determined whether or not the control device 50 has detected a fully open or open auto signal for the side window glass of the driver's seat. In this determination, the control device 50 detects the load of the power window driving unit 59 to detect full open, and the power window switch 58 detects an open auto signal. If the determination is negative, the process returns to step 100 and the above processing is repeated, and if the determination is affirmative, the routine proceeds to step 107.

  In step 107, the control device 50 determines whether or not the current location is within a predetermined area. The determination is based on information from the navigation device 60 or information acquired from the roadside device or the mobile phone with a position detection function by the communication device 62. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 108.

  In step 108, the control device 50 controls the buckle driving unit 52 so as to move the buckle 26 in the front upward direction of the vehicle, and proceeds to step 110. That is, it is determined whether the relaxation condition is satisfied by detecting the current area in addition to the relaxation condition of the above embodiment. Then, when the relaxation condition is satisfied, the control device controls the buckle driving unit 52 so that the position of the buckle 26 moves from the first position to the second position. Thereby, the buckle 26 moves in the front upward direction of the vehicle, the restraint of the occupant by the webbing 16 is relaxed, and it is possible to easily get out of the window.

  Next, at step 110, the control device 50 detects the states of the buckle switch 54, the vehicle speed sensor 56, and the power window switch 58 and proceeds to step 112.

  In step 112, the control device 50 determines whether or not the tongue 24 of the driver's seat is inserted into the buckle 26. This determination is made based on the state of the buckle switch 54. If the determination is negative, the process returns to step 100 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 114.

  In step 114, the control device 50 determines whether or not the vehicle speed is equal to or higher than a threshold value, or whether or not the vehicle speed in a predetermined range continues for a predetermined time or more. If the determination is negative, the process returns to step 110 and the above processing is repeated, and if the determination is affirmative, the process proceeds to step 116.

  In step 116, it is determined whether or not the control device 50 detects a fully closed or closed auto signal for the side window glass of the driver's seat. In this determination, the control device 50 detects the fully closed state by detecting the load of the power window driving unit 59, and detects the open auto signal from the signal of the power window switch 58. If the determination is negative, the process returns to step 110 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 117.

  In step 117, control device 50 determines whether or not the current location is outside a predetermined area. The determination is based on information from the navigation device 60 or information acquired from the roadside device or the mobile phone with a position detection function by the communication device 62. If the determination is negative, the process returns to step 110 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 118.

  In step 118, the control device 50 controls the buckle driving unit 52 so as to restore the buckle 26 to the original position, and returns to step 100 to repeat the above-described processing. That is, it is determined whether the end condition is satisfied by detecting the current area in addition to the end condition of the above embodiment. Then, when the end condition is satisfied, the control device 50 controls the buckle driving unit 52 so as to return the buckle 26 to the first position. At this time, as described above, when the belt take-up drive unit 64 is provided, the control device 50 drives the belt take-up drive unit 64 when restoring the buckle 26 to the first position, and webbing. You may make it wind up.

  In this way, to determine whether the relaxation conditions are satisfied, by adding a determination as to whether or not the current location is a predetermined area, toll items such as toll parking lots, ticket machines, toll booths, and drive-throughs It is possible to improve the accuracy of determination as to whether or not Further, by improving the determination accuracy, it is possible to prevent the buckle 26 from moving frequently due to erroneous detection.

  In addition, regarding the determination of whether the end condition is satisfied, the determination accuracy of restarting traveling can be improved by adding a determination as to whether or not the current location is outside a predetermined area.

  In the above-described embodiments and modifications, an example has been described in which occupant restraint by the webbing 16 is eased at the time of receiving and receiving charges such as toll parking lots, ticketing machines, toll booths, and drive-throughs and products. The relaxation of occupant restraint by 16 is not limited to this. For example, the webbing 16 may detect the reverse as a state that hinders the occupant's operation, and the buckle 26 may be moved during the reverse so that the occupant can easily confirm the rear. FIG. 6 is a flowchart showing a second modified example of the flow of processing performed by the control device 50 of the seatbelt device 10 according to the present embodiment when the buckle 26 is movable during retreat. Note that the processing in FIG. 6 shows a processing example in the case where the buckle 26 is moved at the time of backward movement compared to the processing in FIG. That is, steps 101A and 101B are added instead of step 101 described above, and steps 120 and 122 are added. In the following, an example in which the processing of steps 101A, 101B, 120, and 122 is added to FIG. 4 will be described, but a form added to FIG. 5 may be used.

  In step 101A, the control device 50 detects the state of the shift position sensor 66 and detects the current area, and proceeds to step 101B.

  In step 101B, the control device 50 determines whether or not the shift position is in the R (reverse) range. If the determination is affirmative, the process proceeds to step 102, where the above processing is performed and the determination is negative. If YES, go to step 120.

  In step 120, the control device 50 controls the buckle driving unit 52 so as to move the buckle 26 in the front upward direction of the vehicle, and proceeds to step 122. As a result, the buckle 26 moves upward in the front direction of the vehicle when reversing, so that the restraint of the occupant by the webbing 16 is relaxed, and the backward confirmation operation is facilitated.

  In step 122, control device 50 determines whether or not the shift position has been moved outside the R range. If the determination is affirmative, the process proceeds to step 118 described above to restore the buckle 26 to its original position. On the other hand, if the determination is negative, the process returns to step 100 and the above processing is repeated.

  As described above, in the second modified example, the buckle 26 is moved in conjunction with the backward movement to relieve the restraining force by the webbing 16 and facilitate the backward confirmation operation.

  In the above-described embodiment and modification, an example has been described in which the buckle 26 is moved and the restraint of the occupant by the seat belt device 10 is relaxed. However, the method of easing the restraint of the occupant is not limited thereto. For example, instead of the movement of the buckle 26, the belt winding drive unit 64 may be driven to draw out the webbing so as to relax the occupant's restraint. Or you may make it ease a passenger | crew's restraint by performing the movement of the buckle 26, and drawing | extracting the webbing 16 together.

  In the above-described embodiment and modification, an example of the relaxation condition and the end condition is shown, but the condition is not limited to the above. For example, a case where a switch or the like that relaxes the restraint of the occupant by the webbing 16 is provided and the switch is operated may be applied as the relaxation condition. Further, the end condition of the relaxation of the webbing restraint is when the insertion of the tongue 24 of the driver's seat into the buckle 26 is detected and a vehicle speed that is equal to or higher than a predetermined threshold value or a predetermined range of vehicle speed that continues for a predetermined time is detected. May be applied. Further, there may be a condition depending on the order in which a plurality of conditions are established. For example, after the detection of the fully closed or open auto signal of the driver's seat side window, the condition for ending the establishment order is detected, such as detection of resumption of travel (detection of a vehicle speed exceeding a predetermined threshold or a predetermined range of vehicle speeds continuing for a predetermined time) It is good. In addition, the relaxation condition and the termination condition are both described above as being a plurality of conditions. However, the present invention is not limited to this, and any one or more of the plurality of conditions may be applied.

  Further, in the above-described embodiment and modification, the example in which the buckle 26 moves in the upper front direction of the vehicle is described as the moving direction of the buckle 26 that relaxes the restraint of the occupant by the webbing 16, but the moving direction of the buckle 26 is not limited to this. is not. For example, the restraint of the occupant by the webbing 16 may be relaxed by moving upward in the vehicle. Alternatively, the constraint may be relaxed by moving in another direction.

  Moreover, although the process performed by the control apparatus 50 in said embodiment was demonstrated as a software process, it is not restricted to this. For example, the processing may be performed by hardware, or may be processing that combines both hardware and software.

  Further, the processing performed by the control device 50 in the above embodiment may be stored and distributed as a program in a storage medium.

  Furthermore, the present invention is not limited to the above, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Seat belt apparatus 16 Webbing 24 Tongue 26 Buckle 30 Seat belt buckle apparatus 32 Movement mechanism 50 Control apparatus 52 Buckle drive part 54 Buckle switch 56 Vehicle speed sensor 58 Power window switch 59 Power window drive part 60 Navigation apparatus 62 Communication apparatus 64 Belt winding Drive unit 66 Shift position sensor

Claims (9)

A mitigation part that relaxes the restraint of passengers by webbing,
A control unit that controls the relaxation unit so as to relax the restraint when a predetermined relaxation condition that represents a state in which webbing hinders an occupant's movement is satisfied;
A seat belt device comprising:   2. The control unit according to claim 1, wherein the control unit further controls the relaxation unit to restore the constraint when a predetermined termination condition for terminating relaxation of the constraint is satisfied after the constraint is relaxed. 3. Seat belt device.   The seat belt device according to claim 2, wherein the end condition is satisfied when a passenger's webbing is mounted and a vehicle speed equal to or higher than a predetermined threshold is detected or a vehicle speed within a predetermined range is detected continuously for a predetermined time. .   The end condition includes a signal that the occupant's webbing is mounted, a vehicle speed equal to or higher than a predetermined threshold is detected or a vehicle speed within a predetermined range is detected continuously, and the window is fully closed or automatically closed. The seat belt device according to claim 2, which is established when at least one of the defined areas is detected.   5. The relaxation condition is satisfied when a passenger's webbing is mounted, a vehicle speed of 0 or below a predetermined threshold is detected, and a signal for fully opening or automatically opening the window is detected. The seat belt device according to claim 1.   The relaxation condition is satisfied when the occupant's webbing is mounted, the vehicle speed is detected as 0 or less than a predetermined threshold, a signal for fully opening or automatically opening the window is detected, and a predetermined area is detected. The seat belt device according to any one of claims 1 to 4.   The seat belt device according to claim 1, wherein the relaxation condition is satisfied when a shift operation is performed to a reverse position.   The seat belt device according to claim 7, wherein the control unit further controls the relaxation unit so as to restore the constraint when the shift operation is performed to a position other than the retracted position after the constraint is relaxed.   The seat belt device according to any one of claims 1 to 8, wherein the relaxation portion relaxes the restraint by at least one of movement of a buckle position and webbing withdrawal.

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