JP2004123044A - Car seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a car seat device capable of enhancing the comfort in sitting in the cabin. <P>SOLUTION: Judgement is made whether the set time as specified at 0.1 sec intervals from a rotation and a sliding motor are started (SD1), and the set pulse corresponding to the elapsed time to the current time is calculated (SD2). In a case the set pulse is smaller than the number of rotary pulses (SD3), the duty ratio of duty signals to the rotation motor is lessened to decelerate the rotating speed of the seat (SD4), and the rotating angle of the seat is brought close to the ideal rotating angle. In a case the set pulse is greater than the number of rotary pulses (SD5), the duty ratio of duty signals to the rotation motor is enlarged to accelerate the rotating speed of the seat (SD6), and the rotating angle of the seat is brought close to the ideal rotating angle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle seat device provided in a vehicle.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a vehicle seat, a rotating seat that facilitates getting on and off a vehicle is known.
[0003]
The rotating seat is provided with a rotating mechanism for rotating the seat facing the front of the vehicle toward the entrance and exit side, and is configured to assist in taking off and sitting on the seat when getting on and off.
[0004]
[Problems to be solved by the invention]
However, such a rotating seat is relatively fixed to the front side of the vehicle in order to prevent interference with the pillar behind the entrance at the time of rotation.
[0005]
For this reason, I felt cramped depending on my physique.
[0006]
The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a vehicular seat device that can improve the livability during riding.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a vehicle seat device according to claim 1 of the present invention has a slide mechanism for sliding a seat, a rotation mechanism for changing the direction of the seat, and the slide mechanism according to a switch operation. Activating the rotation mechanism, when starting the seat from a preset reference position, the relationship between the time elapsed from the start at the time of position detection and the operating position at that time, the elapsed time from the start and Adaptive control means for controlling an operation state of the mechanism such that a relationship between a preset position set in advance and the relationship is adjusted by at least one of the slide mechanism and the rotation mechanism. ing.
[0008]
That is, this vehicle seat device includes a rotation mechanism that changes the direction of the seat, and a slide mechanism that slides the seat. For this reason, as compared with the related art in which only the rotation mechanism is provided, it is possible to slide at the boarding position, and the livability is improved.
[0009]
The vehicle seat device is configured to operate the slide mechanism and the rotation mechanism in accordance with a switch operation, and at the time of operation, at least one of the slide mechanism and the rotation mechanism includes: The operating state of the mechanism is changed so that the relationship between the elapsed time from the start at the time of the position detection and the operating position at that time adapts to the relationship between the elapsed time from the start and the preset position corresponding thereto. Controlled. Thereby, the slide mechanism and the rotation mechanism are synchronized with each other on the basis of the elapsed time from the start. Then, the sheet is moved along a predetermined movement locus.
[0010]
Further, the vehicle seat device according to claim 2, further comprising a detecting unit that detects that at least one of the elevating mechanism and the rotating mechanism is at a preset origin position, wherein the detecting unit detects when the switch is operated. If it is not possible to confirm that the one of the mechanisms is at the home position, there is provided a home return means which operates until the one mechanism is located at the home position.
[0011]
That is, the elevating mechanism and the rotating mechanism are normally arranged at a predetermined origin position. However, when not used for a long time, a slight deviation from the origin position may occur due to distortion of the mechanism or the like.
[0012]
Therefore, when the switch is operated, if at least one of the lifting mechanism and the rotating mechanism cannot confirm that the mechanism is at the home position, the mechanism is operated until the mechanism is located at the home position, and is returned to the home position.
[0013]
Further, in the vehicle seat device according to claim 3, when the switch is operated, when detecting that the slide mechanism is not at the preset rotation start position, after operating the slide mechanism to the rotation start position, A start control unit for starting a normal operation is provided.
[0014]
That is, in this vehicle seat apparatus, the movement range of the seat is increased by using the slide mechanism. However, when the rotation mechanism is operated while the seat is largely moved by the slide mechanism, the seat and the surrounding area are not moved. There is concern about interference with the department.
[0015]
Therefore, when the switch is operated, if it is detected that the slide mechanism is not at the preset rotation start position, the normal operation is started after operating the slide mechanism to the rotation start position, thereby increasing the seat size. Problems that may occur when the user has been moved are eliminated.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a mechanical portion of a vehicle seat device 1 according to the present embodiment.
[0017]
That is, the slide mechanism 12 is provided on the floor 11 at the position of the driver's seat of the vehicle, and the slide mechanism 12 includes a slide mechanism main body 13 fixed to the floor 11. A pair of rails 14, 14 extending in the vehicle front-rear direction are provided on the slide mechanism main body 13 at a distance, and a slider 15, 15 is provided inside the rails 14, 14 on the rails 14, 14. It is movably supported along.
[0018]
A slide motor 22 is fixed on a continuous plate 21 that connects the rails 14 at the ends, and feed screws 24, 23 are provided from gear boxes 23, 23 driven by the slide motor 22. 24 extends along each of the sliders 15,15. Nuts 25, 25 provided on the corresponding sliders 15, 15 are screwed to the respective feed screws 24, 24, and the feed screws 24, 24 and the nuts 25, 25 cause the feed screws 24, 24 to be engaged. , 24, a feed mechanism is configured in which the nut portions 25, 25 move in the length direction of the feed screws 24, 24.
[0019]
A rotation mechanism 31 is provided above the slide mechanism 12. The rotating mechanism 31 includes a rotating mechanism main body 32 fixed to the sliders 15, 15. A rotating ring 34 is rotatable through a circular hole 33 in the center of the rotating mechanism main body 32 via a bearing. It is supported by. An arc-shaped rotary gear 35 is fixed to an outer peripheral portion of the rotary mechanism main body 32, and a gear portion 36 is formed on an outer peripheral edge of the rotary gear 35. A rotation motor 37 is fixed to a bracket 34 a extending from the rotation ring 34, and the rotation gear 35 is screwed into an output gear 39 of a gear box 38 driven by the rotation motor 37. .
[0020]
A seat (not shown) constituting a driver's seat is fixed to the rotating ring 34. Thereby, the seat can be moved in the vehicle front-rear direction along the slide rails 14 by operating the slide motor 22, and the seat is turned to the vehicle front side by operating the rotary motor 37. It is configured so that the direction can be changed between a state of facing the entrance and the exit side.
[0021]
In the case of a sheet with an elevating function, an elevating mechanism operated by an elevating motor is provided between the sheet and the rotating mechanism 31.
[0022]
FIG. 2 is a block diagram showing a control device 41 of the vehicle seat device 1. The control device 41 is mainly configured by a control unit 42 having a microcomputer.
[0023]
An operation switch 51 provided on a console box or the like is connected to the control unit 42, and the operation switch 51 is a center-off switch, which is for turning the seat to the entrance and exit side; The seat is configured to be switched to a forward direction in which the seat is directed forward of the vehicle. The control unit 42 is connected with a rotary motor encoder 52 built in the rotary motor 37 and a slide motor encoder 53 built in the slide motor 22. The number of rotation pulses stored in the RAM of the microcomputer is configured to be sequentially increased or decreased according to the applied pulse. Thus, by referring to the number of rotation pulses, the rotation angle of the sheet can be calculated. Further, the number of slide pulses stored in the RAM of the microcomputer is sequentially increased or decreased according to the pulse output from the encoder 53 for the slide motor. Thereby, the slide position of the sheet can be calculated by referring to the number of slide pulses.
[0024]
The control unit 42 includes a rotation limit switch 61 that is turned on when the rotation ring 34 of the rotation mechanism 31 is at a home position as a predetermined initial position, and the slider 15 of the slide mechanism 12. , 15 are connected to a slide limit switch 62 that is turned on when it is at a home position as a predetermined initial position.
[0025]
The control unit 42 is connected to the rotation motor 37 via a rotation motor drive unit 71. By outputting a duty signal to the rotation motor drive unit 71, the rotation speed of the rotation motor 37 is controlled. Is configured to be variable. The control unit 42 is connected to the slide motor 22 via a slide motor drive unit 72. By outputting a duty signal to the slide motor drive unit 72, the rotation speed of the slide motor 22 is controlled. Is configured to be variable.
[0026]
Thereby, in response to the input from the operation switch 51, the slide mechanism 12 and the rotation mechanism 31 are operated, and the seat is turned to the preset vehicle front side and to the entrance / exit side. It is configured to be able to rotate between the state.
[0027]
In the case of a seat with an elevating function, an encoder for an elevating motor built in an elevating motor that drives an elevating mechanism is connected to the control unit 42, and the RAM of the microcomputer is supplied to the microcomputer according to a pulse output from the encoder for the elevating motor. It is configured to sequentially increase or decrease the stored number of lifting pulses. Thus, the sheet lifting state can be calculated by referring to the lifting pulse number. Further, the control unit 42 is connected with a lifting / lowering limit switch that is turned on when the lifting / lowering mechanism is at a home position as a predetermined initial position. Further, the control unit 42 is connected to the lifting / lowering motor via a lifting / lowering motor driving unit, and outputs a duty signal to the lifting / lowering motor driving unit. Is configured to be able to control the elevating speed.
[0028]
FIG. 3 shows an ideal rotation line 82 showing the relationship between the time elapsed from the starting point 81 at which the rotary motor 37 was actuated from the origin position and the rotation angle of the rotating mechanism 31, and the time elapsed from the starting point 81. FIG. 9 is a diagram showing a slide ideal line 83 showing a relationship between the rotation angle and the slide position of the slide mechanism 12, wherein the rotation angle and the slide position according to the elapsed time are calculated and set in advance. In FIG. 3, the rotation angle is indicated by the number of rotation pulses, and the slide position is indicated by the number of slide pulses.
[0029]
The stroke by the slide mechanism 12 is set to be 500 pulses in terms of the number of slide pulses, and the time required to move the entire stroke is set to 10 seconds. The slide mechanism 12 is set so as to move at a constant speed from the origin position, and is set at a movement speed at which the number of slide pulses increases by 50 pulses per second.
[0030]
The rotation range of the rotation mechanism 31 is set so as to be 1000 lux in terms of the number of rotation pulses, and the time required for full-range rotation is set to 9.5 seconds. Regarding the rotation mechanism 31, the number of rotation pulses from the initial position to the first shift point 85 is set to 300 pulses, and the elapsed time from the start is set to 2.15 seconds. Thus, during this time, the number of rotation pulses is set to a rotation speed that increases by about 140 pulses per second.
[0031]
The number of rotation pulses from the first shift point 85 to the second shift point 86 is set to 400 pulses, and the time required to rotate from the first shift point 85 to the second shift point 86 is four. It is set to be seconds. Thus, during this period, the number of rotation pulses is set to a rotation speed that increases by 100 pulses per second.
[0032]
The number of rotation pulses from the second shift point 86 to the final point 87 is set to 300 pulses, and the time required to rotate from the second shift point 86 to the final point 87 is 3.35 seconds. It is set to be. Thus, during this time, the number of rotation pulses is set to a rotation speed that increases by about 90 pulses per second.
[0033]
The operation of the present embodiment according to the above configuration will be described with reference to the flowcharts shown in FIGS.
[0034]
That is, when the operation switch 51 is switched to the getting on / off side, it is determined whether or not the operation switch 51 is turned on on the getting on / off side (S1). S2).
[0035]
In this home position return process, as shown in FIG. 5, it is determined whether or not the rotation limit switch 61 is off (SB1). If the rotation mechanism 31 is at the home position and the rotation limit switch 61 is on, as shown in FIG. , And branches to step SB4. On the other hand, when the rotation mechanism 31 is not at the home position and the rotation limit switch 61 is off, the rotation motor 37 is operated (SB2) and the operation is continued until the rotation limit switch 61 is turned on. 31 is moved to the origin position (SB3).
[0036]
That is, the rotation mechanism 31 is normally arranged at a predetermined origin position. However, when not used for a long time, a slight deviation from the origin position may occur due to distortion of the mechanism or the like.
[0037]
However, if it is not possible to confirm that the rotation mechanism 31 is at the home position when operating the switch, the rotation mechanism 31 operates until it reaches the home position, thereby returning to the home position. As a result, it is possible to prevent problems caused by distortion of the mechanism and the like, for example, changes in the movement locus of the seat.
[0038]
Then, when the rotation limit switch 61 is turned on (SB3), it is determined whether or not the slide limit switch 62 is off (SB4). The slide mechanism 12 is at the home position and the slide limit switch 62 is turned on. If so, the process branches and returns to the getting on / off process. On the other hand, when the slide mechanism 12 is not at the home position and the slide limit switch 62 is off, the slide motor 22 is operated (SB5), and the operation is continued until the slide limit switch 62 is turned on. After moving No. 12 to the origin position (SB6), the process returns to the getting on / off process.
[0039]
As a result, as described above, when it is not possible to confirm that the slide mechanism 12 is at the home position, the slide mechanism 12 operates until it reaches the home position, and returns to the home position. It is possible to prevent a problem such as a change in the moving trajectory of the seat.
[0040]
Here, in the case of a seat with a lifting function, it is determined whether or not the lifting / lowering limit switch is off.When the lifting / lowering mechanism is not at the home position and the lifting / lowering limit switch is off, the lifting / lowering motor is turned on. To move the elevating mechanism to the home position.
[0041]
Thus, as described above, when it is not possible to confirm that the lifting mechanism is at the home position, the mechanism operates until the home position is reached, and returns to the home position, whereby the sheet caused by distortion of the mechanism or the like is returned. Troubles such as a change in the movement trajectory can be prevented.
[0042]
In the getting on / off process, a pre-start process is executed next (S3).
[0043]
In the pre-start process, as shown in FIG. 6, it is determined whether or not the slide mechanism 12 is at a predetermined rotation start position based on, for example, the number of rotation pulses (SC1). If it is at the rotation start position, the process branches back to the getting on / off process. If it is not at the rotation start position, the slide motor 22 is operated (SC2) to reach the rotation start position. After the rotation mechanism 31 is moved to the rotation start position (SC3), the process returns to the getting on / off process.
[0044]
That is, in the vehicle seat apparatus 1, the use of the slide mechanism 12 increases the range of movement of the seat. However, the rotation mechanism 31 is operated in a state where the seat is largely moved rearward by the slide mechanism 12. In this case, there is a concern that the sheet may interfere with a peripheral portion such as a pillar.
[0045]
However, when the switch mechanism detects that the slide mechanism 12 is not at the preset rotation start position, the normal operation is started after the slide mechanism 12 is operated to the rotation start position. For this reason, even when the seat is largely moved to the rear of the vehicle, it is possible to solve a problem such as interference with a peripheral portion such as a pillar which may occur due to the seat.
[0046]
In the getting-on / off process, after the rotation motor 37 and the slide motor 22 are operated to start sliding and rotating the seat (S4), a rotation control process is executed (S5).
[0047]
In this rotation control process, as shown in FIG. 7, a set time set every 0.1 second from the start when the operations of the two motors 22 and 37 are started, that is, in the first time, the set time is set to 0. It is determined whether one second has elapsed or not for the second time whether or not 0.2 seconds have elapsed since the start (SD1).
[0048]
If the set time has elapsed, the set pulse corresponding to the current elapsed time is read out by calculation or referring to a table stored in advance in the ROM of the microcomputer (SD2). In the case of calculating, for example, when 0.1 second has elapsed from the start, the number of rotation pulses is set to a rotation speed that increases by about 140 pulses per second as indicated by the ideal rotation line 82 in FIG. Therefore, the set pulse is calculated as 14 pulses.
[0049]
Then, it is determined whether or not the set pulse is smaller than the number of rotation pulses (SD3). If the set pulse is smaller, the duty ratio of the duty signal to the rotation motor 37 is reduced to reduce the rotation speed of the sheet. (SD4), the rotation angle of the seat is brought close to the ideal rotation angle, and the process returns to the getting on / off process. On the other hand, if the set pulse is not smaller than the number of rotation pulses in step SD3, it is determined whether the set pulse is larger than the number of rotation pulses (SD5).
[0050]
When the set pulse is larger than the number of rotation pulses, the duty ratio of the duty signal to the rotation motor 37 is increased to increase the rotation speed of the sheet (SD6), thereby reducing the rotation angle of the sheet to the ideal rotation angle. After approaching the angle, the process returns to the getting on / off process. Further, when the set pulse is not larger than the number of rotation pulses, that is, when the set pulse and the number of rotation pulses match, the sheet is rotated to an ideal rotation angle. Return to the getting on / off process.
[0051]
In the getting on / off process, a slide control process equivalent to the above-described rotation control process is executed, and after the slide position of the seat is brought close to an ideal position (S6), it is determined whether or not the operation switch 51 is turned off (S7). ). As a result, if it is on, the process branches to step S5 to repeat the rotation control process and the slide control process, while if it is off, the motors 22 and 37 are stopped. (S8), and returns to the main routine.
[0052]
As described above, the vehicle seat device 1 of the present embodiment includes the rotation mechanism 31 that changes the direction of the seat and the slide mechanism 12 that slides the seat, so that only the rotation mechanism 31 is provided. As compared with the conventional art, the seat can be moved back and forth in the riding state, and the comfort can be improved.
[0053]
The vehicle seat device 1 is configured to simultaneously operate the slide mechanism 12 and the rotation mechanism 31 in response to a switch operation. Every 0.1 seconds from the start, it is determined whether or not the motor is at the ideal position, and the motors 22 and 37 are controlled to approach the ideal position. For this reason, the slide mechanism 12 and the rotation mechanism 31 can be synchronized with each other based on the elapsed time from the start.
[0054]
Therefore, the sheet can be moved along a predetermined movement trajectory, and it is possible to prevent interference with a peripheral portion such as a pillar during rotation of the sheet.
[0055]
【The invention's effect】
As described above, the vehicle seat device according to the first aspect of the present invention includes the rotation mechanism that changes the direction of the seat, and the slide mechanism that slides the seat. For this reason, as compared with the related art in which only the rotation mechanism is provided, it is possible to slide at the boarding position, and it is possible to improve the livability.
[0056]
The vehicle seat device is configured to operate the slide mechanism and the rotation mechanism in accordance with a switch operation, and at the time of operation, at least one of the slide mechanism and the rotation mechanism includes: The operating state of the mechanism is changed so that the relationship between the elapsed time from the start at the time of the position detection and the operating position at that time adapts to the relationship between the elapsed time from the start and the preset position corresponding thereto. Control. For this reason, the slide mechanism and the rotation mechanism can be synchronized with each other based on the elapsed time from the start.
[0057]
Thus, the seat can be moved along a predetermined movement trajectory, so that it is possible to prevent interference with a surrounding portion when the seat is rotated.
[0058]
Further, in the vehicle seat device according to the second aspect, the elevating mechanism and the rotating mechanism are arranged at a predetermined origin position in normal times. However, when not used for a long time, a slight deviation from the origin position may occur due to distortion of the mechanism or the like.
[0059]
However, when the switch is operated, if it is not confirmed that at least one of the lifting mechanism and the rotation mechanism is at the origin position, the mechanism is operated until the mechanism is located at the origin position, thereby returning to the origin position. be able to. As a result, it is possible to prevent problems caused by distortion of the mechanism and the like, for example, changes in the movement locus of the seat.
[0060]
Furthermore, in the vehicle seat device according to the third aspect, the movement range of the seat is increased by using the slide mechanism. There is concern about interference with the department.
[0061]
However, when the switch is operated, if it is detected that the slide mechanism is not at the preset rotation start position, the normal operation is started after operating the slide mechanism to the rotation start position. For this reason, even when the sheet has been largely moved, it is possible to eliminate a problem such as interference with a surrounding portion that may be caused by the movement.
[Brief description of the drawings]
FIG. 1 is a perspective view of a mechanism portion showing an embodiment of the present invention.
FIG. 2 is a block diagram of a control device according to the embodiment;
FIG. 3 is an explanatory diagram showing an operation of the embodiment.
FIG. 4 is a flowchart showing an operation of the embodiment.
FIG. 5 is a flowchart showing an origin return process according to the embodiment;
FIG. 6 is a flowchart showing a process during startup according to the embodiment.
FIG. 7 is a flowchart showing a rotation control process of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle seat device 12 Slide mechanism 31 Rotation mechanism 42 Control unit 52 Encoder for rotation motor 53 Encoder for slide motor

Claims (3)

A slide mechanism for sliding the seat,
A rotation mechanism for changing the direction of the sheet,
When the slide mechanism and the rotation mechanism are operated according to a switch operation, and when the seat is started from a preset reference position, the relationship between the elapsed time from the start at the time of position detection and the operating position at that time. And the operation state of the mechanism such that the elapsed time from the start and the relationship of the preset position corresponding thereto are adjusted by at least one of the slide mechanism and the rotation mechanism. Adaptive control means for controlling;
A vehicle seat device comprising: A detection unit that detects that at least one of the lifting mechanism and the rotation mechanism is at a preset origin position,
2. The apparatus according to claim 1, further comprising an origin return means which operates until said one mechanism is located at said origin position when said detection means cannot confirm that said position is at said origin position when a switch is operated. Vehicle seat device. When the switch is operated, when it is detected that the slide mechanism is not at a preset rotation start position, a start time control means for starting a normal operation after operating the slide mechanism to the rotation start position is provided. The vehicle seat device according to claim 1 or 2, wherein:

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