JP5499481B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicle seat device.

  2. Description of the Related Art Conventionally, a device that prompts a vehicle occupant to wear a seat belt has been proposed. For example, in the device disclosed in Patent Document 1, when an occupant seated on a seat turns on an ignition switch without wearing a seat belt, the occupant applies a compression force by moving the headrest forward or the like. By giving a sense of incongruity to the passengers, the passenger is encouraged to wear a seat belt.

  In addition, in the apparatus disclosed in Patent Document 2, when wearing of the seat belt is detected, the wearing rate of the seat belt is improved by adjusting the vehicle seat to the optimum driving position for each driver. Yes.

JP 2004-196285 A Japanese Utility Model Publication No. 62-28657

  However, the apparatus disclosed in Patent Document 1 has a problem that the passenger is uncomfortable because the passenger is encouraged to wear the seat belt by giving the passenger an uncomfortable feeling. In addition, in the apparatus disclosed in Patent Document 2, when a user of an automobile is alone, even if the seat belt is not worn, the seat is optimally driven by wearing the seat belt when the user rides before that. Because it is adjusted to the position, the effect of promoting the wearing of the seat belt could not be obtained.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat device that is comfortable for passengers and that can sufficiently promote the wearing of a seat belt.

The vehicle seat device according to the present invention moves a seat belt that is mounted to protect a passenger seated in a seat of a rear seat of the vehicle, a mounting detection unit that detects the mounting of the seat belt, and a seat of the rear seat . A moving means and a control means for controlling the moving means based on the wearing state of the seat belt detected by the wearing detecting means. The controlling means controls the moving means, and the seat detecting means does not attach the seat belt. When the state is detected, the seat back of the rear seat is set to the initial position where the seat back stands, and when the wearing state is detected by the mounting detection means, the seat back of the seat of the rear seat is at a predetermined reclining angle. It is a reclining position that falls back.

According to this vehicle seat device, when the seat belt unmounted state is detected by the mounting detection unit, the moving unit is controlled by the control unit, and the seat back of the rear seat is set to the initial position. Further, when the wearing state of the seat belt is detected by the wearing detecting means, the moving means is controlled by the control means, and the reclining position where the seat back of the seat of the rear seat falls backward at a predetermined reclining angle is set. Here, the initial position where the seat back stands is a position suitable for getting on and off for the occupant, and the reclining position is a reclining position of the seat back that is comfortable for the occupant.

  In this way, when the seat belt is not attached, the seat back is a position that is more suitable for getting on and off than a reclining position that is comfortable for the occupant, so the occupant seeks a reclining position that is comfortable for each ride, The occupant can be fully encouraged to wear the seat belt. In addition, since the initial position where the seat back stands is suitable for getting on and off, the passenger can get on and off comfortably.

In addition, the control means preferably sets the seating portion of the seat of the rear seat to an initial position behind the predetermined position when the wearing detection means detects that the seat belt is not worn. In this way, when getting on and off without a seat belt, the seating portion of the seat of the rear seat is in the initial position behind the predetermined position, so the environment that prompts getting on and off together with the initial position where the seat back stands Can be created.

In addition, a seating detecting means for detecting that the occupant is seated on the seat of the rear seat is provided, and the control means is only when the seating detecting means detects the seating of the occupant and the seat belt is attached. It is preferable to set the seat back to a reclining position where the seat back falls backward at a predetermined reclining angle. If it does in this way, a seat back can be made into a comfortable reclining position only after wearing a seat belt in the state where it sat down on the seat of the backseat . Therefore, it is possible to prevent the act of wearing the seat belt without sitting on the seat of the rear seat and sitting on the seat belt in this state, and more urgently urging the passenger to install the seat belt. be able to.

Moreover, it is preferable to provide a winding means capable of winding and unwinding the seat belt in accordance with the movement of the seat in the rear seat . In this way, since the tension applied to the seat belt in accordance with the movement of the seat of the rear seat is adjusted, sense of tightening the seat belt during the movement of the seat of the rear seat is optimal.

  As described above, according to the present invention, it is possible to provide a vehicle seat device that is comfortable for the occupant and can sufficiently promote the wearing of the seat belt.

It is a block block diagram which shows the vehicle seat apparatus which concerns on one Embodiment of this invention. It is a typical side view which shows the position of a sheet | seat. It is a flowchart which shows the process sequence by the vehicle seat apparatus shown in FIG. It is a block block diagram which shows the vehicle seat apparatus which concerns on other embodiment of this invention. It is a flowchart which shows the process sequence by the vehicle seat apparatus shown in FIG. It is a flowchart which shows the other process sequence by the vehicle seat apparatus shown in FIG.

  Hereinafter, a preferred embodiment of a vehicle seat device according to the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

(One embodiment)
FIG. 1 is a block diagram showing a vehicle seat device according to an embodiment of the present invention, and FIG. 2 is a schematic side view showing a seat position. The vehicle seat device 10 according to the present embodiment is applied to a seat of a rear seat of the vehicle, and controls the state of the seat and adjusts it to a predetermined position, so that a passenger can wear a seat belt. It is a thing to encourage.

  As shown in FIGS. 1 and 2, a vehicle seat apparatus 10 includes a seat control ECU (a control ECU) that controls the position adjustment of a seat 5 of a rear seat that includes a seat cushion 5a that is a seating portion and a seat back 5b that is a backrest. electronic control unit (control means) 1, a buckle switch (mounting detection means) 2 that detects the wearing of a seat belt 7 that protects an occupant 6 seated on the seat 5, and a position sensor 3 that detects the position of the seat 5 And a sheet driving section (moving means) 4 for moving the sheet 5. Each of the buckle switch 2, the position sensor 3, and the seat driving unit 4 is electrically connected to the seat control ECU 1.

  The seat belt 7 includes a belt 7a, a plate 7b provided on the belt 7a, a buckle 7c on which the plate 7b is detachably mounted, and the like. The seat belt 7 is provided with a retractor (winding means) 8 that can wind and unwind the belt 7a. The retractor 8 is electrically connected to the seat control ECU 1. In FIG. 2, the components of the vehicle seat device 10 shown in FIG. 1 are not shown.

  The seat control ECU 1 shown in FIG. 1 executes predetermined processing based on signals output from the buckle switch 2 and the position sensor 3, and controls the seat driving unit 4 according to the processing result. The seat control ECU 1 includes a computer including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.

  Specifically, the seat control ECU 1 has the same functions as the seat belt attachment detection unit 11, the position detection unit 12, and the seat movement control unit 13. These show a part of the processing of the seat control ECU 1 as the configuration of the seat control ECU 1, and the details will be described in the operation description of the seat control ECU 1 described later.

  The buckle switch 2 is configured by a switch or the like provided on the buckle 7c of the seat belt 7, and detects whether the seat belt 7 is attached or not attached by detecting on / off of the plate 7b with respect to the buckle 7c. It is to detect. The buckle switch 2 generates an on / off signal indicating the detected on / off, and outputs the generated on / off signal to the seat control ECU 1 as a mounting presence / absence signal.

  The position sensor 3 is a sensor that is attached to the seat 5 and detects the position, that is, the position of the seat 5 by detecting a reclining angle or the like of the seat 5. The position sensor 3 generates a position signal indicating the detected position of the seat 5, and outputs the generated position signal to the seat control ECU 1.

  The seat drive unit 4 includes a drive motor and the like, and is provided for the seat 5. The seat drive ECU 4 controls the rotational drive of the drive motor to drive the seat 5 and move to a predetermined position. It is.

  Next, the position of the seat 5 adjusted by the vehicle seat device 10 will be described. In the present embodiment, the seat 5 is automatically set in two types of positions: a position where the seat back 5b of the seat 5 shown in FIG. 2A stands and a position where the seat back 5b shown in FIG. Adjusted. In the following description, the position shown in FIG. 2A is referred to as a “boarding position”, and the position shown in FIG. 2B is referred to as a “seating position”.

  As shown in FIG. 2A, in the boarding / alighting position, the seat back 5b is an initial position where the seatback 5b stands. Further, as shown in FIG. 2 (b), in the sitting position, the reclining position is such that the seat back 5b falls backward at a predetermined reclining angle.

  Further, as is clear from a comparison between FIG. 2A and FIG. 2B, the seat cushion 5a is in the initial position behind the predetermined position in the getting-on / off position as compared to the sitting position. . This is because the reclining type of the seat 5 of the rear seat is a so-called seat cushion moving type in which the seat back 5b is moved around the shaft on the upper side.

  In this seat cushion movement type, when the seat 5 is moved from the boarding / alighting position to the seating position, the seat 5 is driven by the seat driving unit 4 and falls backward at a predetermined reclining angle from the initial position where the seat back 5b stands. The seat cushion 5a slides from the initial position to a predetermined position ahead. Further, when the seat 5 is moved from the seating position to the boarding / alighting position, the seat 5 is driven by the seat driving unit 4 so that the seat back 5b stands at the initial position from the predetermined reclining angle and the seat cushion 5a is moved from the predetermined position. Slide to the initial rear position.

  Thus, in the boarding / alighting position, since the seat back 5b stands, the body of the occupant 6 is raised, and the seat cushion 5a is moved backward, so that the foot space between the front seat and the occupant is expanded. 6 is easy to get off. In addition, since the upper body of the occupant 6 is raised even when getting into the vehicle, it is easy to perform operations such as wearing the seat belt 7. On the other hand, in the sitting position, the seat back 5b is tilted to the reclining position, so that the passenger 6 can take a comfortable posture.

  Next, the operation of the vehicle seat device 10 will be described. FIG. 3 is a flowchart showing a processing procedure performed by the vehicle seat device 10. The following processing is performed by the seat control ECU 1 of the vehicle seat device 10. Further, the following processing is executed at times other than system sleep until the engine is started and then stopped.

  First, in step S1, the seatbelt wearing detector 11 determines whether or not the seatbelt 7 is worn. Here, the seatbelt wearing detection unit 11 obtains a wearing / non-mounting signal indicating whether or not the plate 7b is fitted to the buckle 7c, which is output from the buckle switch 2, and based on the obtained wearing / unpacking signal. It is determined whether 7 is in an attached state or not.

  When it is determined in step S1 that the seat belt 7 is in the mounted state, the process proceeds to step S2, and the position detector 12 determines whether or not the position of the seat 5 is the seating position. Here, the position detection unit 12 acquires a position signal indicating the position of the seat 5 output from the position sensor 3, and determines whether or not the seat 5 is the seating position based on the acquired position signal. .

  When it is determined in step S2 that the seat 5 is not in the sitting position, the process proceeds to step S3, and the seat driving control unit 13 controls the seat driving unit 4 to generate the sitting position. Here, the seat movement control unit 13 generates a seating position generation signal instructing movement of the seat 5 to the seating position, and outputs the generated seating position generation signal to the seat driving unit 4 to generate the seat 5 Is controlled to be in the sitting position. Then, the process returns to step S1.

  Here, while the seat 5 is controlled to move to the seating position, the retractor 8 provided at the upper end of the seat belt 7 is controlled by the seat movement control unit 13, and the belt 7 a is adjusted in accordance with the movement of the seat 5. Loosen or increase the tension applied to That is, the retractor 8 feeds out or winds up the belt 7 a as the seat 5 moves.

  On the other hand, if it is determined in step S2 that the seat 5 is in the sitting position, the process proceeds to step S4, where the seat movement control unit 13 turns off the energization to the seat driving unit 4 and does not output a signal to the seat driving unit 4. Return to step S1.

  When the seat belt 7 is detected by the buckle switch 2 by such processing, the seat driving control unit 13 of the seat control ECU 1 controls the seat driving unit 4 so that the seat back 5b is moved backward at a predetermined reclining angle. Thus, the occupant 6 can take a comfortable posture.

  On the other hand, if it is determined in step S1 that the seat belt 7 is not attached, the process proceeds to step S5, where the position detection unit 12 determines whether or not the position of the seat 5 is the boarding / exiting position based on the position signal. To do.

  If it is determined in step S5 that the seat 5 is not in the boarding / alighting position, the process moves to step S6, and the seat movement control unit 13 controls the seat driving unit 4 to generate the boarding / alighting position. Here, the seat movement control unit 13 generates a getting-on / off position generation signal that instructs the movement of the seat 5 to the getting-on / off position, and outputs the generated getting-on / off position generation signal to the seat driving unit 4. Is controlled to become the position when getting on and off. Also in this step, the tension of the belt 7a is adjusted by the retractor 8 as in step S3. Then, the process returns to step S1.

  On the other hand, if it is determined in step S5 that the seat 5 is in the getting-on / off position, the process proceeds to step S7, where the seat movement control unit 13 turns off the energization to the seat driving unit 4 and does not output a signal to the seat driving unit 4. Return to step S1.

  By such processing, when the buckle switch 2 detects that the seat belt 7 is not attached, the seat movement control unit 13 of the seat control ECU 1 controls the seat driving unit 4 to set the seat back 5b to the initial position. The occupant 6 can easily take a posture suitable for getting on and off.

  As described above, according to the vehicle seat device 10 according to the present embodiment, when the buckle switch 2 detects that the seat belt 7 is not mounted, the seat control ECU 1 controls the seat driving unit 4 and the seat back 5b. On the other hand, when the seat belt 7 is detected by the buckle switch 2, the seat drive ECU 4 is controlled by the seat control ECU 1, and the seat back 5b falls backward at a predetermined reclining angle. The reclining position.

  Thus, when the seat belt 7 is not attached, the seat back 5b is set to a position more suitable for getting on and off than a reclining position that is comfortable for the occupant 6, so that the occupant 6 seeks a reclining position that is comfortable every time it gets on. Therefore, it is possible to sufficiently encourage the occupant 6 to wear the seat belt. Moreover, since the initial position where the seat back 5b stands and the seat cushion 5a moves backward is suitable for getting on and off, the passenger 6 can get on and off comfortably.

  In addition, when getting on and off without the seat belt 7, the seat back 5b stands and the seat cushion 5a is in the initial position where the seat cushion 5a moves rearward from a predetermined position, so that an environment for prompting the passenger 6 to get on and off can be created. .

  Further, since the belt 7a is wound or fed out by the retractor 8 in accordance with the movement of the sheet 5, the tension applied to the belt 7a is adjusted, and the feeling of tightening is optimized by the belt 7a during the movement of the sheet 5.

  In addition, since the occupant 6 seated in the rear seat can be urged to wear the seat belt 7 sufficiently, it is possible to sufficiently cope with the duty of wearing the seat belt in the rear seat.

(Other embodiments)
FIG. 4 is a block diagram showing a vehicle seat device according to another embodiment of the present invention.

  The vehicle seat device 20 shown in FIG. 4 is different from the vehicle seat device 10 shown in FIG. 1 in that it includes a seat sensor (sitting detection means) 9 for detecting that the occupant 6 is seated on the seat 5. The seat control ECU 1 includes a seating detection unit 14 that performs predetermined processing described later based on the detection result of the seat sensor 9.

  The seat sensor 9 is a sensor that is attached in the vicinity of the seat cushion 5 a and detects whether or not the occupant 6 is seated on the seat 5. The seat sensor 9 generates a seating presence / absence signal indicating the presence / absence of the detected seating, and outputs the generated seating presence / absence signal to the seat control ECU 1.

  FIG. 5 is a flowchart showing a processing procedure performed by the vehicle seat device 20. The processing procedure shown in FIG. 5 is different from the processing procedure by the vehicle seat device 10 shown in FIG. 3 in that the processing of step S11 is performed instead of step S1 of FIG.

  Specifically, in step S11, the seating detection unit 14 and the seat belt wearing detection unit 11 determine whether or not the occupant 6 is seated on the seat 5 and the seat belt 7 is in the wearing state. Here, the seating detection unit 14 acquires the seating presence / absence signal output from the seat sensor 9, and the seatbelt mounting detection unit 11 acquires the mounting presence / absence signal output from the buckle switch 2, and is similar to the previous embodiment. to decide.

  When it is determined that the occupant 6 is seated on the seat 5 and the seat belt 7 is in the worn state, the process proceeds to step S2, and the same process as the process of steps S2 to S4 shown in FIG. The reclining position is such that the back 5b falls backward at a predetermined reclining angle. If it is determined that the occupant 6 is not seated on the seat 5 and / or the seat belt 7 is not attached, the process proceeds to step S5, and the same process as the process of steps S5 to S7 shown in FIG. The seat back 5b is set to the initial position where it stands.

  As described above, according to the vehicle seat device 20 according to the present embodiment, the seating position is not limited to whether or not the seat belt 7 is worn, but the seating position is set on the condition that the occupant 6 is seated on the seat 5. Generated. For this reason, even though the occupant 6 is not seated on the seat 5, the buckle 7c is mounted on the plate 7b, so that the seating position is generated and the seat back 5b is set to the reclining position. it can.

  Moreover, in this embodiment, you may perform the process by the vehicle seat apparatus 20 in another process sequence as shown in FIG. That is, as shown in FIG. 6, first, in step S21, it is determined whether or not the occupant 6 is seated on the seat 5, and if it is determined in step S21 that the occupant 6 is seated on the seat 5, the process proceeds to step S22. Then, it is determined whether or not the seat belt 7 is in the mounted state. Further, when it is determined in step S22 that the seat belt 7 is in the mounted state, the process proceeds to step S2, and the same process as the process of steps S2 to S4 shown in FIG. 3 is performed, so that the seat back 5b has a predetermined reclining angle. It is a reclining position that falls back.

  On the other hand, if it is determined in step S21 that the seat belt 7 is not attached, or if it is determined that the occupant 6 is not seated on the seat 5 in step S22 even if it is in the attached state, the process proceeds to step S5. The same process as the process of steps S5 to S7 shown in FIG. 3 is performed to set the seat back 5b to the initial position.

  In this way, according to the processing procedure as shown in FIG. 6, the seat back 5b is not put on the seat 5 because the seat back 5b is in a comfortable reclining position only after the seat belt 7 is worn while seated on the seat 5. It is possible to prevent the act of wearing the seat belt 7 and sitting on the belt 7a in this state, and to urge the passenger to install the seat belt 7 more reliably.

As mentioned above, although preferred embodiment of the vehicle seat apparatus by this invention was explained in full detail, this invention is not limited to the said embodiment .

  In the above embodiment, the seat reclining type is the seat cushion moving type, but the seat back 5b may be movable. In this case, if the reclining angle is adjusted by rotating the seat back 5b at the connecting portion between the seat back 5b and the seat cushion 5a, the same effects as those of the above embodiment can be obtained.

  In the above embodiment, the retractor 8 is provided at the upper end of the seat belt 7. However, the retractor may be provided at the lower end (anchor side) of the seat belt 7. Moreover, you may set the boarding position and the seating position adjusted by the vehicle seat apparatus according to the body shape, physique, preferred posture, etc. for each of a single user or a plurality of users.

  DESCRIPTION OF SYMBOLS 1 ... Seat control ECU (control means), 2 ... Buckle switch (mounting detection means), 4 ... Seat drive part (moving means), 5 ... Seat, 5a ... Seat cushion (sitting part), 5b ... Seat back, 6 ... A passenger | crew, 7 ... seat belt, 8 ... Retractor (winding means), 9 ... Seat sensor (seating detection means), 10, 20 ... Vehicle seat apparatus.

Claims (4)

A seat belt worn to protect a passenger seated in the seat of the rear seat of the vehicle;
Wearing detection means for detecting wearing of the seat belt;
Moving means for moving the seat of the rear seat ;
Control means for controlling the moving means based on the wearing state of the seat belt detected by the wearing detection means,
The control means controls the moving means;
When an unmounted state of the seat belt is detected by the mounting detection means, an initial position where a seat back of the seat of the rear seat stands,
The vehicle seat device according to claim 1, wherein when the mounting state of the seat belt is detected by the mounting detection means, the seat back of the seat of the rear seat is set to a reclining position where the seat back is tilted backward at a predetermined reclining angle. The said control means makes the seating part of the seat of the said rear seat the initial position back rather than a predetermined position, when the non-wearing state of the said seatbelt is detected by the said attachment detection means. Item 2. The vehicle seat device according to Item 1. Comprising seating detection means for detecting that the passenger is seated on a seat of the rear seat ;
The control means sets the seat back to the reclining position where the seat back is tilted backward at the predetermined reclining angle only when the seating detection means detects the seating of the occupant and the seat belt is detected. The vehicle seat device according to claim 1, wherein the vehicle seat device is a vehicle seat device. The vehicle seat device according to any one of claims 1 to 3, further comprising a winding unit capable of winding and unwinding the seat belt in accordance with movement of the seat of the rear seat .

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