JP3828516B2 - Automatic rotating storage seat system for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic rotating storage seat system for a vehicle, and more particularly to an automatic rotating storage seat system for a vehicle that automatically performs storage operation electrically.
[0002]
[Prior art]
Vehicle seats, in particular, third seats, are known in which the seat back is moved forward, overlapped with the seat cushion, and the seat cushion is rotated backward to be stored in the floor recess (for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 5-40029
[0004]
In the seat storing operation, first, the seat back is moved forward and overlapped with the seat cushion. Next, the seat cushion is swung backward while the seat back is in contact with the seat cushion, the seat back and the seat cushion are accommodated in the recess, and finally the support portion is folded.
[0005]
[Problems to be solved by the invention]
However, in such a seat, when the seat is stored, the seat back is overlapped with the seat cushion, and the overlapped seat cushion and the seat back are rotated backward, so that the weight of both the seat back and the seat cushion is increased. Since it becomes heavier, there is a problem that it takes labor of an operator to rotate it.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic rotating storage seat system for a vehicle that reduces the labor for storing seats in order to solve the above problems.
[0007]
[Means and Actions for Solving the Problems]
In order to achieve the above object, a vehicle automatic rotating storage seat system according to the present invention is configured as follows.
[0008]
A first automatic storage seat system for a vehicle (corresponding to claim 1) is a vehicle storage seat system in which a seat back is superimposed on a seat cushion and the entire seat is swung to be stored in a floor recess of a vehicle body. A seat back forward mechanism that automatically folds the seat back forward and overlaps the seat cushion; a seat swing mechanism that automatically swings the overlapped seat back and seat cushion together and stores the seat back in the floor recess; and Control means for controlling the operation of the seat back forward tilt mechanism and the seat swing mechanism. In the seating process of returning the folded seat back and seat cushion from the stowed state to the seated state, the seat cushion forward tilt mechanism is released at the position where the seat cushion is swung by a predetermined angle and the motor is driven only by the seat cushion. Apply force It is characterized by that.
[0009]
According to the first automatic rotating storage seat system for a vehicle, the seat back forward mechanism that automatically folds the seat back forward and overlaps the seat cushion, and automatically swings the overlapped seat back and seat cushion together. Since the seat swing mechanism stored in the floor recess, the seat back forward tilt mechanism, and the control means for controlling the operation of the seat swing mechanism are provided, the torque for tilting the seat cushion forward can be small. Smaller and can be placed in a sheet. Further, since a large torque is required to swing the stacked sheets, they are arranged on the vehicle body side. As a result, an electric seat can be obtained without sacrificing the size of the seat. Therefore, it is possible to reduce the load when the occupant stores the seat.
[0011]
Also, the first According to the automatic rotating storage seat system for a vehicle, in the seating step for returning the folded seat back and the seat cushion from the stored state to the seated state, the seat back is moved forward at a position where the seat cushion is swung by a predetermined angle, for example, 50 °. Since the reclining lock is released and the motor driving force is applied only to the seat cushion, the seat back is the seating position after the motor is returned to the seating position. It becomes unnecessary.
[0012]
First 2 Automatic rotating storage seat system for vehicles (claims) 2 In the above configuration, preferably, an operation switch for instructing the operation of the seat back forward tilting mechanism and the seat swinging mechanism is arranged behind the seat.
[0013]
First 2 According to the automatic rotating storage seat system for vehicles, the operation switch for instructing the operation of the seat back forward tilting mechanism and the seat swinging mechanism is arranged at the rear of the seat, so that it can be operated from the tailgate without the child having to operate it accidentally. it can. The seat does not malfunction even if a load is sandwiched between the tailgate and the vehicle body opening.
[0014]
First 3 Automatic rotating storage seat system for vehicles (claims) 3 In the above configuration, preferably, the control means performs automatic operation of the seat under the condition that the automatic transmission of the vehicle is in the parking position or the parking brake is operated and the tailgate is opened. Characterized by allowing.
[0015]
First 3 According to the vehicle automatic rotating storage seat system, the control means performs the automatic operation of the seat under the condition that the automatic transmission of the vehicle is in the parking position or the parking brake is operated and the tailgate is opened. In order to allow, the passenger can be obliged to open the tailgate for seat storage.
[0016]
First 4 Automatic rotating storage seat system for vehicles (claims) 4 In the above-described configuration, the seat back forward tilting mechanism is preferably characterized by being arranged on the seat back side or the seat cushion side.
[0017]
First 4 According to this vehicle automatic rotating storage seat system, since the seat back forward tilting mechanism is arranged on the seat back side or the seat cushion side, the system can be made compact.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
[0019]
FIG. 1 is a perspective view of a vehicular automatic rotating storage seat system 10 according to an embodiment of the present invention.
[0020]
The vehicular automatic rotating storage seat system 10 includes a seat back forward tilting mechanism and a seat swinging mechanism.
[0021]
The seat back forward tilting mechanism is a mechanism for causing the seat back 11 to be tilted forward and overlapped with the seat cushion 12 on the seat back 11 or the seat cushion 12 side. The seat back forward tilt mechanism includes a reclining mechanism portion 14 attached to a seat back frame 13 which is a frame of the seat back 11 and a reclining lock actuator portion 15.
[0022]
The seat swing mechanism is a mechanism that swings the overlapped seat back 11 and seat cushion 12 on the vehicle body side and stores them in a recess (not shown) formed on the floor behind the seat. The seat rocking mechanism includes a cushion lock mechanism 16 and a storage unit mechanism 17.
[0023]
The seat back forward tilt mechanism and the seat swing mechanism can be operated by an operation switch (not shown) disposed behind the seat, and the seat can be stored and returned.
[0024]
FIG. 2 is a configuration diagram of the reclining mechanism unit 14. The reclining mechanism portion 14 is attached to the seat back frame 13 and includes a spiral portion 18, a reclining lock portion 19, a forward tilt detection switch 20, a lock-on detection switch 21, and a lock-off detection switch 22.
[0025]
The spiral portion 18 is for applying a reaction force to the seat back 11 so that the seat back 11 is tilted forward.
[0026]
The reclining lock unit 19 is used to fix the seat back 11 to the forwardly tilted position or the inverted position, and includes a lock member 23, a lock member 24, a spring 25, a cam member 26, and a cam member 27. The lock member 23 has an arc portion 30 between the tooth portion 28 and the tooth portion 29, and the lock member 24 has a tooth portion 31.
[0027]
The forward-falling detection switch 20 is turned on when the seatback 11 is in the forward-falling state, and is turned off when the seatback 11 is not in the forward-falling state, and includes a contact 32 and a contact 33. The contact 32 and the contact 33 are apart from each other except in the forward tilted state, the switch is in the off state, and when the seat back 11 is in the forward tilted state, the contact 32 and the contact 33 are in contact with each other and become the on state. Then, a signal is sent to an electronic control unit (ECU) (not shown).
[0028]
The lock-on detection switch 21 is turned on when the reclining is locked, and is turned off when the reclining is not locked. The lock-on detection switch 21 includes a contact 34 and a contact 35 attached to the end of the cam member 27. When locked, the locking members 23 and 24 are engaged with each other between the tooth portions 28 and 31 and the end of the cam member 26 is raised, so that the contact 34 and the contact 35 are in contact with each other. It is in the on state and sends an on signal to the ECU. When not locked, the tooth portions of the lock members 23 and 24 are not engaged with each other, the cam member 26 is in a lowered state, and the contact 34 and the contact 35 are not in contact with each other. Thereby, it is in an OFF state.
[0029]
The lock-off detection switch 22 is turned off when the reclining is locked, and is turned on when the reclining is not locked. The lock-off detection switch 22 includes a contact 36 and a contact 37 attached above the cam member 27. When locked, the lock members 23 and 24 are engaged with each other and the end of the cam member 27 is raised, so that the contact 36 and the contact 37 are not in contact with each other. Is in the off state. When the lock member is not locked, the teeth of the lock member are not engaged with each other, the cam member 27 is lowered, and the contact 36 and the contact 37 are in contact with each other. Thereby, it will be in an ON state and an OFF signal will be sent to ECU.
[0030]
When the end of the cam member 27 is pulled upward, the cam member 27 rotates around the shaft 38 and the cam member 26 rotates rightward around the shaft 39. Thereby, the tooth part of the lock member 24 rises upward, and the engagement with the tooth part with the lock member 23 is released. At that time, the seat back 11 falls forward due to the reaction force of the spiral 18. When the tooth portion of the lock member 24 passes through the arc portion 30 of the lock member 23 and reaches the position of the tooth portion 29 of the lock member 23, the end portion of the lock member 24 is pulled by the spring 25, and thereby the lock member 24. Is engaged with the teeth of the lock member 23 and locked, and is brought forward.
[0031]
FIG. 3 is a configuration diagram of the reclining lock actuator unit 15. The reclining lock actuator portion 15 is attached to the side opposite to the reclining mechanism portion of the seat back frame 13, and is attached to the actuator 40, the rod 41, the rod support 42, the magnet 43 attached to the rod, and the second rod. It comprises a hall sensor 44, 45 and a cable 46 attached to the end of the rod 41.
[0032]
The actuator 40 operates when an operation signal is input from the ECU, and lowers or raises the rod 41.
[0033]
The rod 41 has an end attached to the actuator 40, a cable 46 attached to the other end, and a magnet 43 attached to a predetermined position. And it is supported by the rod support part 42 and moves only in the vertical direction.
[0034]
The magnet 43 is for applying a magnetic field to the Hall sensors 44 and 45 when the rod 41 moves up and down. The hall sensors 44 and 45 are for sensing the magnetic field from the magnet 43 and detecting the position of the rod 41 when the magnet 43 passes. The cable 46 is attached to the end portion of the rod 41 and is attached to the upper end portion of the cam member 27 of the reclining mechanism portion 14 along the frame 13 of the seat back.
[0035]
When the actuator 40 is actuated by a signal from the ECU and the rod 41 is lowered, the cable 46 attached to the upper end portion of the rod 41 is pulled, whereby the end portion of the cam member 27 of the reclining mechanism portion 14 is pulled. Is raised. When the rod 41 is lowered and the magnet 43 reaches the height of the position of the hall sensor 45, a signal from the hall sensor 45 is sent to the ECU by the magnetic field from the magnet 43. When the actuator 40 is actuated by a signal from the ECU to raise the rod 41, the cable 46 attached to the upper end portion of the rod 41 is loosened, and the cam member 27 is pulled back by the spring 25 of the reclining mechanism portion 14. It is. When the magnet 43 comes to the position of the height of the hall sensor 44, a signal from the hall sensor 44 is sent to the ECU by the magnetic field from the magnet 43.
[0036]
The seat back forward tilt mechanism described above is attached to the two left and right seat backs 11R and 11L.
[0037]
FIG. 4 is a perspective view of the cushion lock mechanism 16 constituting the seat swing mechanism. The cushion lock mechanism 16 fixes the seat cushion 12 to the floor. The cushion lock mechanism 16 includes a cushion lock actuator 47 attached to the seat cushion frame 12A, a ratchet 48, a latch 49, a latch switch 50, a lock switch 51, a release switch 52, and a striker fixed to the floor. 53.
[0038]
The cushion lock actuator 47 operates to pull the ratchet 48 when the forward tilt of the seat back 11 is completed and a lock-on detection switch-on signal is sent to the ECU. When the release switch 52 is turned on, the operation of pulling the ratchet 48 is stopped. When the latch switch 50 is turned on, the ratchet 48 is returned.
[0039]
The ratchet 48 is for bringing the latch 49 into a locked state and an unlocked state. When the end of the ratchet 48 is pulled by the cushion lock actuator 47, the ratchet 48 rotates around the shaft 54 and the protruding portion of the ratchet 48 55 is released from the latch 49, and the latch 49 is not in the locked state. When the latch switch 50 is turned on, the end of the ratchet 48 is returned by the cushion lock actuator 47 and rotates around the shaft 54.
[0040]
The latch 49 forms a state in which the striker 53 is locked or not locked. When the protruding portion 55 of the ratchet 48 is joined to the end portion 56 of the latch 49, the latch 49 cannot be rotated around the shaft 57 and is locked, and the seat cushion 12 is fixed. When the ratchet 48 is pulled and the protrusion 55 of the ratchet 48 is disengaged from the end 56 of the latch 49, the latch 49 can rotate about the shaft 57. When the seat cushion 12 rises upward, the latch 49 is rotated by the striker 53, and the striker 53 is detached from the concave portion 58 of the latch 49. At this time, the latch switch 50 is pushed by the projection 59 of the latch 49 to turn it on. .
[0041]
The striker 53 is fixed to the floor. When the seat cushion 12 is lowered, the striker 53 enters the recess 58 of the latch 49, and the latch 49 is locked to lock the seat cushion 12. is there.
[0042]
The release switch 52 is turned on when the ratchet 48 is pulled and turned off when the ratchet 48 is returned. The latch switch 50 is turned on when the latch 49 is rotated by the striker 53. Also, when the striker 53 pushes up the latch 49, it is turned off. The lock switch 51 is turned off when the ratchet 48 returns to the initial position.
[0043]
As shown in FIG. 1, the storage unit mechanism 17 has a motor 61 and a seat rotation shaft 62 attached to a gear box 60, and the gear box 60 is fixed to the passenger compartment floor. Further, the seat rotating shaft 62 is provided with contacts 62a, and the gear box 60 is provided with a disk provided with a plurality of contacts 62b at a predetermined angle. It is composed. When the motor 61 is operated, the rotation of the motor 61 is transmitted by a plurality of gears in the gear box 60, the sheet rotation shaft 62 rotates, and the entire sheet rotates about the sheet rotation shaft 62. And an angle signal is transmitted to ECU by the contact of the contact 62a and the contact 62b.
[0044]
FIG. 1 also shows the positions of the control device and the harness. An electronic control unit (ECU) 63 as a control device is attached to the seat cushion frame 12A, and a harness is connected from the ECU 63. A reclining related harness 64 to the reclining mechanism unit 14 and a back actuator harness to the reclining lock actuator unit 15 are connected. 65, a cushion lock-related harness 66, a motor harness 67, and a body harness 68.
[0045]
The reclining-related harness 64 is configured by wiring to the forward fall detection switch 20, the lock-on detection switch 21, and the lock-off detection switch 22. The back actuator harness 65 is configured by wiring to the reclining lock actuator 40 and the hall sensors 44 and 45. The cushion lock-related harness 66 is configured by wiring to the cushion lock actuator 47, the lock switch 51, the release switch 52, and the latch switch 50. The motor harness 67 is a wiring to the motor 61, and the body harness 68 is a wiring from a battery (not shown).
[0046]
FIG. 5 is a diagram for explaining the control device. A control unit (ECU) 63 is a main part of the control device, and a power supply wiring from the battery 70 is connected to the fuses 71, 72, 73 via the input interface to the microcomputer in the unit. In addition, the battery 70 is connected through an ignition switch 74 and a fuse 75. Further, a warning lamp 76, an AT shift position switch 77, a tailgate switch 78, a seat storing / returning switch (operation switch) 79 which is a command means for performing a seat raising / lowering operation, left and right reclining pre-falling switches (forward-falling detection switches) ) 20R, 20L, right reclining lock detection switch (lock-on detection switch) 21R, right reclining lock retract detection switch (lock-off detection switch) 22R, left reclining lock detection switch (lock-on detection switch) 21L, left reclining lock retract detection Switch (lock-off detection switch) 22L, right latch lock detection switch (latch switch) 50R, right latch lock retract detection switch (release switch) 52R, right latch lock release detection Switch (lock switch) 51R, left latch lock detection switch (latch switch) 50L, left latch lock retract detection switch (release switch) 52L, left latch lock release detection switch (lock switch) 51L, seat lift detection switch 80, short coupler A signal from 81 and a ground wire 82 are connected. The motor 61 of the storage unit 17 is connected to the right reclining lock actuator 40R, the left reclining lock actuator 40L, the right latch lock actuator 47R, and the left latch lock actuator 47L via the output interface. When the switch 79 is turned on to the storage side, the storage operation is started. When the switch 79 is turned on to the return side, the return operation is started. The ECU 63 is connected to a motor current detector 83 for detecting the motor current of the storage unit and a seat cushion position sensor 84 for detecting an angle of the seat cushion from the floor. Further, a buzzer alarm 85 and a warning 86 are connected. Is connected. The switch 79 is disposed behind the seat.
[0047]
The motor 61 of the storage unit 17 is provided with a clutch (not shown) so that the mechanism can be operated by manual operation without using a microcomputer.
[0048]
By the operation of these switches and sensors, the microcomputer executes a program according to the flowcharts shown in FIGS.
[0049]
6 and 7 are diagrams showing the basic operation. In the storing operation, the tailgate T is opened and the user U keeps pushing the operation switch 79 on the storing side (FIG. 6a), so that the seat back 11 is brought together with the seat cushion 12 from the front-falling state (FIG. 6b). A series of operations until the rotating sheet rotates integrally and is stored in the floor recess S which is a storage space (FIG. 6c) is electrically performed. Further, the return operation is performed by opening the tailgate T and continuously pressing the return side of the operation switch 79, so that the seat back 11 and the seat cushion 12 are stored in the floor recess S which is a storage space. (FIG. 7a), the seat integrated rotation is carried out, and a series of operations up to the forward-turned state in which the seat back 11 and the seat cushion 12 are integrated (FIG. 7b) are electrically performed. Return the seat back manually.
[0050]
If the user releases the switch during the seat rotation operation, the operation stops at that point.
[0051]
If an overload is detected during the seat rotation operation, the operation is stopped at that time, and the operation becomes possible when the switch is operated again.
[0052]
When the seat stop range is halfway, the alarm in the buzzer and meter is turned on to warn the user that the cushion is not locked.
[0053]
Next, a description will be given according to the flowcharts shown in FIGS. When the storage switch 79 is pushed with a finger and the switch is turned on, the program starts. First, it is determined whether or not the AT shift position is the parking position (step ST10). If the shift position is not the parking position, execution ends. When the shift position is the parking position, it is determined whether or not the parking brake is operating (step ST11). When the parking brake is not operating, the execution is terminated. When the parking brake is operating, the tailgate sensor 78 is used. Is detected (step ST12), and it is determined whether the tailgate is open (step ST13). If the tailgate is not open, the program is terminated and the operation is stopped. When the tailgate is open, the reclining lock actuator 40 is controlled in the cable pulling direction (step ST14). Thereby, the reclining lock actuator 40 pulls the reclining lock cable 46. FIG. 12A shows the reclining mechanism 14 at that time, and the cam member 27 is pulled in the direction of the arrow. As a result, the reclining lock 19 is released, and the seat back 11 starts to tilt forward due to the reaction force of the spiral 18 (FIG. 12B). The ECU 63 detects that the lock-off detection switch 22 is turned on (step ST15), and stops the reclining lock actuator 40 (step ST16). The ECU 63 detects that the forward tilt detection switch 20 is turned on (step ST17), and controls the reclining lock actuator 40 in the cable return direction (step ST18). The reclining lock actuator 40 returns the cable 46. The ECU 63 detects that the hall sensor 44 is turned on (step ST19), and stops the reclining lock actuator 40 (step ST20). The seat back 11 is completely tilted forward, and the lock-on detection switch 21 is turned on (step ST21). Thereby, the process shifts to the sheet rotating operation.
[0054]
Next, the sheet rotating and storing operation will be described with reference to the flowcharts shown in FIGS. 10 and 11 and FIGS. 13 and 14. First, the cushion lock shown in FIG. 13 is released. The ECU 63 controls the cushion lock actuator 47 in the ratchet pulling direction when the seat back 11 is completely tilted forward and the lock-on detection switch 21 is turned on (step ST22). Thereby, the ratchet 48 is pulled and the release switch 52 is turned on (FIG. 14A).
[0055]
Next, after detecting that the release switch 52 is turned on (step ST23), the ECU 63 stops the cushion lock actuator 47 (step ST24) and controls the rotation of the motor 61 in the storage direction (step ST25). Thereby, the sheet rotates in the storage direction. The latch 49 is rotated by the striker 53, and the latch switch is turned on (FIG. 14B). The ECU 63 detects the ON state of the latch switch 50 (step ST26), and controls the cushion lock actuator 47 in the ratchet return direction (step ST27).
[0056]
When the motor 61 is operating, the value of the motor current detector 83 is detected, and it is determined whether or not it is equal to or greater than a predetermined value (step ST28). If the motor current value is equal to or greater than the predetermined value, the operation of the motor 61 is stopped (step ST29). If the motor current value is smaller than the predetermined value, the motor 61 is operated as it is. When the motor operation is stopped in step ST29, the output from the seat cushion position sensor 84 is detected (step ST30). If the value is not more than a predetermined value (for example, 30 °) as shown in FIG. 15, it is determined (step ST31). If the value is equal to or less than the predetermined value, the ECU 63 outputs a signal for sounding the alarm buzzer 85 (step ST32), and for example, 10 intermittent alarm buzzers are generated. When the value is larger than the predetermined value, the program ends. When the sheet rotates and stops to the storage position by executing step ST25, the ECU 63 detects a motor current value (step ST28), detects a current due to an increase in motor load, and controls rotation stop of the sheet (step ST29). This completes the storage.
[0057]
Further, when the ignition switch 74 is turned on, the ECU 63 operates to detect the output from the seat cushion position sensor 84. If the predetermined value (for example, 30 ° or less) as shown in FIG. Displayed on warning 86 in meter. Thereby, it is possible to prevent the user from sitting and traveling in a state where the seat cushion 12 is not securely locked.
[0058]
Next, the operation from the storage to the forward-turned state will be described with reference to the flowchart shown in FIG. 17 and FIG. The ECU 63 detects that the return switch is pressed (step ST40), and first determines whether or not the shift position is a parking position (step ST41). If the shift position is not the parking position, execution ends. When the shift position is the parking position, it is determined whether the parking brake is on (step ST42). Execution ends when the parking brake is off. When the parking brake is on, the output from the tailgate sensor 78 is detected (step ST43), and it is determined whether the tailgate is open (step ST44). If the tailgate is not open, the program is terminated and the operation is stopped. When the tailgate is open, the motor 61 is controlled to rotate in the return direction (step ST45). The motor 61 rotates in the return direction. At this time, the motor current value is detected, and it is determined whether the motor current value is larger than a predetermined value (step ST46). If the motor current is below a predetermined value, the motor operates as it is (step ST47). If the motor current value is larger than the predetermined value, a stop signal is output to the motor 61 (step ST48). Thereby, the motor 61 stops. Next, the output of the seat cushion position sensor 84 is detected (step ST49), and it is determined whether or not the value from the seat cushion position sensor 84 is not more than a predetermined value (for example, 30 °) as shown in FIG. ST50). If it is below the predetermined value, an output signal to the alarm buzzer 85 is output (step ST51). Thereby, the alarm buzzer 85 becomes 10 times intermittently, for example. If it is greater than the predetermined value, the program execution is terminated. By continuing to execute step ST47, the striker 53 pushes up the latch 49 from the state of FIG. 16A, and the latch switch 50 is turned off (step ST52). The striker 53 pushes up the latch 49, the ratchet 48 returns to the initial position as shown in FIG. 16B, and the lock switch 51 is turned off. The ECU 63 detects that the lock switch 51 is turned off (step ST53) and stops the rotation of the motor (step ST54). Thereby, it will be in a forward-turned state, and it will be in the state which can be used by inverting the seat back 11 by the user.
[0059]
When the ignition switch 74 is turned on after the completion of step ST48, the ECU 63 operates to detect the output from the seat cushion position sensor 84, and if a predetermined value (for example, 30) as shown in FIG. If it is less than or equal to (°), a warning 86 in the meter is displayed. Thereby, it is possible to prevent the user from sitting and traveling in a state where the seat cushion 12 is not securely locked.
[0060]
Thus, since each mechanism operates continuously by the control device, it is possible to perform complete storage and restoration of the sheet only by operating the switch 79.
[0061]
In the above embodiment, the seat cushion is rotated from the stowed state to the forwardly tilted state.However, in the seating step of returning the folded seat back and the seat cushion from the stowed state to the seating state, the seat cushion has a predetermined angle, for example The reclining lock of the seat back forward tilting mechanism may be released at a position where the seat is swung by 50 °, and the motor driving force may be applied only to the seat cushion.
[0062]
The operation from the above storage to the return state will be described with reference to the flowchart shown in FIG. 18 and FIGS. 16 and 19. As shown in FIG. 19A, the switch 79 is pushed with a finger while the seat back 11 and the seat cushion 12 are folded and stored in the floor recess S. The ECU 63 detects that the return switch is pressed (step ST60), and first determines whether or not the shift position is a parking position (step ST61). If the shift position is not the parking position, execution ends. When the shift position is the parking position, it is determined whether the parking brake is on (step ST62). Execution ends when the parking brake is off. When the parking brake is on, the output from the tailgate sensor 78 is detected (step ST63), and it is determined whether the tailgate is open (step ST64). If the tailgate is not open, the program is terminated and the operation is stopped. When the tailgate is open, the motor 61 is controlled to rotate in the return direction (step ST65). The motor 61 rotates in the return direction. When the cushion position sensor 84 coincides with 50 °, the reclining lock 19 is released (step ST66). As a result, as shown in FIG. 19B, when the angle formed with the floor of the seat cushion 12 reaches 50 °, the seat back 11 is separated from the seat cushion 12 and lowers by its own weight. Then, the motor current value is detected, and it is determined whether the motor current value is larger than a predetermined value (step ST67). If the motor current is below a predetermined value, the motor operates as it is (step ST68). If the motor current value is larger than the predetermined value, a stop signal is output to the motor 61 (step ST69). Thereby, the motor 61 stops. Next, the output of the seat cushion position sensor 84 is detected (step ST70), and it is determined whether or not the value from the seat cushion position sensor 84 is equal to or less than a predetermined value (for example, 30 °) as shown in FIG. ST71). If it is below the predetermined value, an output signal to alarm buzzer 85 is output (step ST72). Thereby, the alarm buzzer 85 becomes 10 times intermittently, for example. If it is greater than the predetermined value, the program execution is terminated. By continuing to execute step ST68, the striker 53 pushes up the latch 49 from the state of FIG. 16A, and the latch switch 50 is turned off (step ST73). The striker 53 pushes up the latch 49, the ratchet 48 returns to the initial position as shown in FIG. 16B, and the lock switch 51 is turned off. The ECU 63 detects that the lock switch 51 is turned off (step ST74), and stops the rotation of the motor (step ST75). Thereby, as shown in FIG.19 (c), it will be in a seating position state and will be in the state which can be used. As described above, after returning to the seating position by the motor, the seat back is at the seating position, so that the work of raising the seat back becomes unnecessary.
[0063]
【The invention's effect】
As is apparent from the above description, the present invention has the following effects.
[0064]
A seat back forward mechanism that automatically folds the seat back forward and overlaps it with the seat cushion, and a seat swing mechanism that automatically swings the overlapped seat back and seat cushion together to store in the floor recess, Since the seat back forward tilting mechanism and the control means for controlling the operation of the seat swinging mechanism are provided, the torque for forward tilting the seat cushion may be small, so the actuator becomes small and can be placed in the seat. Further, since a large torque is required to swing the stacked sheets, they are arranged on the vehicle body side. As a result, an electric seat can be obtained without sacrificing the size of the seat. Therefore, it is possible to reduce the load when the occupant stores the seat.
[0065]
Further, in the seating step of returning the folded seat back and the seat cushion from the stored state to the seated state, the seat cushion is released from the reclining lock of the seat back forward tilt mechanism at a position where the seat cushion is swung by a predetermined angle, for example, 50 °. Since the motor driving force is applied only to the seat back, the seat back is in the seating position after being returned to the seating position by the motor, so that the work of raising the seat back becomes unnecessary.
[0066]
Further, since the operation switch for instructing the operation of the seat back forward tilting mechanism and the seat swinging mechanism is disposed at the rear of the seat, it can be operated from the tailgate without being operated accidentally by a child. The seat does not malfunction even if a load is sandwiched between the tailgate and the vehicle body opening.
[0067]
The control means also allows the seat storage operation to be carried out in order to permit the automatic operation of the seat when the automatic transmission of the vehicle is in the parking position or the parking brake is operated and the tailgate is open. The crew can be obliged to open the gate.
[0068]
Further, since the seat back forward-falling mechanism is arranged on the seat back side or the seat cushion side, the system can be made compact.
[Brief description of the drawings]
FIG. 1 is a perspective view of an automatic rotating storage seat system for a vehicle according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a reclining mechanism unit.
FIG. 3 is a configuration diagram of a reclining lock actuator unit 15;
FIG. 4 is a perspective view of a cushion lock mechanism that constitutes a seat swing mechanism.
FIG. 5 is a configuration diagram of a control device.
FIG. 6 is a diagram showing a basic operation.
FIG. 7 is a diagram showing a basic operation.
FIG. 8 is a flowchart of a control program.
FIG. 9 is a flowchart of a control program.
FIG. 10 is a flowchart of a control program.
FIG. 11 is a flowchart of a control program.
FIG. 12 is a diagram illustrating a seat back forward tilting operation.
FIG. 13 is a diagram illustrating a sheet rotating and storing operation.
FIG. 14 is a diagram illustrating a sheet rotating and storing operation.
FIG. 15 is a diagram showing a position of a seat cushion where an alarm buzzer is provided.
FIG. 16 is a diagram illustrating a latch portion when the seat is brought forward from a storage state.
FIG. 17 is a flowchart of a control program for controlling an operation from storage to a forward-turned state.
FIG. 18 is a flowchart of a control program for controlling the operation from the storage state to the return state.
FIG. 19 is a diagram illustrating an operation when the storage state returns to the return state.
[Explanation of symbols]
10 Automatic rotating storage seat system for vehicles
11 Seat back
12 Seat cushion
13 Seat back frame
14 Reclining mechanism
15 Reclining lock actuator
16 Cushion lock mechanism
17 Storage unit mechanism
18 Spiral part
20 Forward tilt detection switch
21 Lock-on detection switch
22 Lock-off detection switch
40 Actuator
43 Magnet
44, 45 Hall sensor

Claims (4)

In the vehicle storage seat system in which the seat back is superimposed on the seat cushion and the entire seat is swung to be stored in the floor recess of the vehicle body.
A seat back forward mechanism that automatically forwards the seat back and overlaps the seat cushion;
A seat swing mechanism for automatically swinging the seat back and the seat cushion as a unit, and storing the seat back in the floor recess;
E Bei and a control means for controlling the operation of the seatback ahead mechanism and the seat rocking mechanism,
In the seating step of returning the folded seat back and the seat cushion from the stored state to the seated state, the seat cushion only the seat cushion is released by releasing the reclining lock of the seat back forward tilting mechanism at a position where the seat cushion is swung by a predetermined angle. An automatic rotating storage seat system for a vehicle , wherein a motor driving force is applied to the vehicle. The seat back ahead mechanism and the seat rocking mechanism according to claim 1 Symbol placement autorotation accommodating sheet system for a vehicle of the operation switch, characterized in that disposed behind the seat to direct the operation of. The control means according to claim 1, automatic transmission of a vehicle or the parking brake is in the parking position is actuated, and under the condition that the tailgate is open, and permits the automatic operation of the sheet serial mounting automatic rotation accommodating sheet system for the vehicle. The seatback ahead mechanism, the seat back side or claim 1 Symbol placement autorotation accommodating sheet system for a vehicle, characterized in that arranged on the seat cushion side.

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