Sheet system

Abstract

To suppress movement of a seat due to execution of seat storage processing from being restricted by an obstacle.SOLUTION: A seat system comprises: a seat loaded in a vehicle having a recognition part for recognizing the size of baggage of an occupant, which is a seat whose state can be switched between a normal state in which the occupant can be seated and a state in which a storage space within the vehicle is made larger than in the normal stage; an obstacle detection sensor for detecting obstacles within a trajectory of the seat until switching from the normal state to the storage state; and a control part that can execute seat storage processing to change the state of the seat from the normal state to the storage state. The control part, when it is decided to execute the seat storage processing on the basis of information from the recognition part (S4), determines whether or not an obstacle is within the trajectory on the basis of information from the obstacle detection sensor (S5) before starting the seat storage process state. The control part, when determining that there is no obstacle, starts the seat storage processing (S7), and when determining that there is an obstacle, does not start the seat storage processing.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a seat system including a control unit for changing the state of a seat.

Background Art

[0002] Conventionally, as a seat system, there is known one that can recognize the size of the luggage of a passenger who is about to get into a vehicle and execute a seat storage process of folding the seat back of the seat to expand the luggage compartment space when the luggage is large (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the prior art, when the seat storage process is executed, if there is an obstacle on the seat to be folded, the rotation of the seat back is restricted by the obstacle, and there is a risk that an excessive load is applied to a motor or the like that rotates the seat back.

[0005] Therefore, an object of the present invention is to suppress the movement of a seat that operates by executing a seat storage process from being restricted by an obstacle.

Means for Solving the Problems

[0006] In order to solve the above problems, a seat system according to the present invention is a seat mounted on a vehicle including a recognition unit that recognizes the size of a passenger's luggage, the seat being switchable between a normal state in which a passenger can sit and a storage state in which the storage space in the vehicle interior is larger than the normal state, and further including an obstacle detection sensor that detects an obstacle within the locus of the seat from the normal state to the storage state, and a control unit that can execute a seat storage process for changing the state of the seat from the normal state to the storage state and determines whether or not to execute the seat storage process. When the control unit determines to execute the seat storage process based on the information from the recognition unit, before starting the seat storage process, it determines whether there is an obstacle within the locus based on the information from the obstacle detection sensor. If it determines that there is no obstacle, it starts the seat storage process; if it determines that there is an obstacle, it does not start the seat storage process.

[0007] According to this configuration, before starting the seat storage process, it is determined whether there is an obstacle within the locus based on the information from the obstacle detection sensor. If it is determined that there is an obstacle, the seat storage process is not started. Therefore, it is possible to suppress the movement of the seat that operates by executing the seat storage process from being restricted by an obstacle.

[0008] Further, the obstacle detection sensor may detect the presence or absence of an object on the seat surface of the seat.

[0009] According to this configuration, as the obstacle detection sensor, for example, it can be combined with the sensor of the seat belt reminder that detects whether a passenger is sitting on the seat, so that the cost can be reduced.

[0010] Further, the seat includes a seat cushion and a seat back that is rotatable with respect to the seat cushion. In the storage state, the seat back may be folded so as to face the seat cushion.

[0011] According to this configuration, in the stored state, since the seat back is folded so as to face the seat cushion, the storage space in the vehicle interior can be made larger than in the normal state.

[0012] Further, the seat is disposed in front of a luggage compartment located at the rear of the vehicle, and in the stored state, the seat may be disposed further forward than in the normal state.

[0013] According to this configuration, the luggage compartment space can be made larger than in the normal state.

[0014] Further, when the control unit determines that there is an obstacle and decides not to start the seat storage process, the control unit may notify the occupant of non-execution information indicating that the seat storage process will not be executed.

[0015] According to this configuration, for example, an occupant outside the vehicle can know before opening the vehicle door that the seat is not in the stored state based on the notification of the non-execution information, so that before opening the vehicle door, the luggage carried can be placed on the ground. Therefore, it is possible to eliminate the waste of an unreasonable operation in which the occupant holds the luggage with one hand and opens the vehicle door with the other hand while expecting the seat to be in the stored state.

[0016] Further, the control unit may notify the non-execution information by a portable terminal that the occupant can carry.

[0017] According to this configuration, since the non-execution information is notified by a portable terminal carried by the occupant, it is easier for the occupant to confirm the non-execution information than when the non-execution information is notified by, for example, an in-vehicle speaker.

[0018] Further, when the control unit determines that there is no obstacle and decides to start the seat storage process, the control unit may notify the occupant of execution information indicating that the seat storage process will be executed.

[0019] According to this configuration, for example, a passenger outside the vehicle can know that the seat is in the stowed state based on the notification of the execution information before opening the vehicle door. Therefore, the passenger can open the vehicle door with confidence while carrying luggage.

[0020] Further, the control unit may notify the execution information by a portable terminal that can be carried by a passenger.

[0021] According to this configuration, since the execution information is notified by a portable terminal carried by a passenger, it is easier for the passenger to confirm the execution information than in the case where the execution information is notified by an in-vehicle speaker, for example.

Effect of the Invention

[0022] According to the present invention, it is possible to suppress the movement of the seat that operates by executing the seat storage process from being restricted by an obstacle.

[0023] Further, by using the obstacle detection sensor as a sensor for detecting the presence or absence of an object on the seat surface of the seat, for example, it can be used in combination with the sensor of the seat belt reminder that detects whether a passenger is sitting on the seat, so that the cost can be reduced.

[0024] Further, in the stowed state, by folding the seat back so as to face the seat cushion, the storage space in the vehicle interior can be made larger than in the normal state.

[0025] Further, the seat disposed in front of the luggage compartment at the rear of the vehicle is disposed further forward than in the normal state in the stowed state, so that the luggage compartment space can be made larger than in the normal state.

[0026] Further, by adopting a configuration for notifying a passenger of non-execution information indicating that the seat storage process is not executed, for example, a passenger outside the vehicle can know that the seat is not in the stowed state based on the notification of the non-execution information before opening the vehicle door, and can lower the luggage held to the ground before opening the vehicle door.

[0027] Further, by adopting a configuration in which non-execution information is notified by a portable terminal that can be carried by a passenger, the passenger can easily confirm the non-execution information as compared with the case where the non-execution information is notified by an in-vehicle speaker, for example.

[0028] Further, by adopting a configuration in which execution information indicating that the seat storage process is being executed is notified to the passenger, for example, a passenger outside the vehicle can know that the seat is in the stored state based on the notification of the execution information before opening the vehicle door. Therefore, the passenger can safely open the vehicle door while carrying luggage.

[0029] Further, by adopting a configuration in which execution information is notified by a portable terminal that can be carried by a passenger, the passenger can easily confirm the execution information as compared with the case where the execution information is notified by an in-vehicle speaker, for example.

Brief Description of the Drawings

[0030]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0031] Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the seat system 1 includes a seat 10, an obstacle detection sensor 20, and a control unit 30.

[0032] The seat 10 is mounted on a vehicle 50 provided with a recognition unit 51 that recognizes the size of the passenger's luggage. The recognition unit 51 is a sensor that detects the luggage carried by a passenger outside the vehicle 50 and consists of a camera or the like. The recognition unit 51 determines whether an image obtained by photographing at least a predetermined area at the rear of the vehicle 50 is a luggage image indicating a passenger carrying luggage by performing image analysis on the image. When it is determined that the image is a luggage image, the recognition unit 51 specifies the maximum length of the luggage from the luggage image and outputs, to the control unit 30, luggage information indicating the maximum length of the luggage and recognition information indicating that the luggage carried by the passenger has been recognized.

[0033] Note that the detection by the recognition unit 51 may be performed at all times, or may be performed when a passenger approaches the vehicle 50. The determination as to whether a passenger has approached the vehicle 50 may be made, for example, based on the radio wave of the vehicle key remote control held by the passenger to determine whether the passenger has approached the vehicle 50.

[0034] The seat 10 is disposed in front of a luggage compartment 52 located at the rear of the vehicle 50. The seat 10 is disposed behind a front row seat FS such as a driver's seat or a passenger seat. The vehicle 50 is a 5-door type vehicle and includes a total of four doors (not shown) located on the left and right sides of the vehicle 50 and a back door 53 located behind the luggage compartment 52.

[0035] The seat 10 includes a seat cushion 11, a seat back 12, and a headrest 13. The seat cushion 11, the seat back 12, and the headrest 13 each have a frame constituting a skeleton, a pad covering the frame, and a skin covering the pad.

[0036] The seat back 12 is rotatably supported by the seat cushion 11. The seat 10 is movable in the front-rear direction by a slide rail (not shown). The seat 10 includes a first drive source such as a motor (not shown) that rotates the seat back 12. The seat 10 or the vehicle 50 includes a second drive source such as a motor (not shown) that moves the seat 10 in the front-rear direction. The first drive source and the second drive source are controlled by the control unit 30.

[0037] The seat 10 can be switched between the normal state shown in FIG. 1 and the stored state shown in FIG. 2. The normal state is a state in which a passenger can sit, that is, a state in which the seat back 12 stands up with respect to the seat cushion 11, and the seat 10 is located at a position other than the most forward position. The stored state is a state in which the storage space in the vehicle interior is made larger than the normal state. In the present embodiment, the stored state means a state in which the seat back 12 is folded so as to face the seat cushion 11 and the seat 10 is arranged at the most forward position.

[0038] The obstacle detection sensor 20 is a sensor that detects an obstacle within the locus of the seat 10 from the normal state to the stored state. In the present embodiment, the obstacle detection sensor 20 is arranged between the skin and the pad of the seat cushion 11 and detects the presence or absence of an object on the seating surface of the seat cushion 11. That is, the obstacle detection sensor 20 can detect an obstacle within the rotation locus of the seat back 12 from the normal state to the stored state.

[0039] The obstacle detection sensor 20 is, for example, a pressure sensor. In the present embodiment, the obstacle detection sensor 20 is also used as a sensor for a seat belt reminder that detects whether or not a passenger is sitting on the seat.

[0040] The control unit 30 includes a CPU, a ROM, a RAM, a rewritable non-volatile memory, etc., which are not shown, and executes processing based on a program stored in advance. The control unit 30 can communicate with a smartphone SP as an example of a portable terminal that a passenger can carry.

[0041] The control unit 30 may be provided in the vehicle 50 or may be provided in the seat 10. Note that the setting for enabling communication between the control unit 30 and the smartphone SP is assumed to be performed in advance by the passenger for the control unit 30 and the smartphone SP.

[0042] The control unit 30 is capable of executing a seat storage process for changing the state of the seat 10 from the normal state to the stored state. Specifically, the control unit 30 has a function of determining whether or not to execute the seat storage process based on the information from the recognition unit 51. More specifically, when the control unit 30 receives the recognition information and the luggage information from the recognition unit 51, it determines whether the maximum length of the luggage is greater than a predetermined value. If the control unit 30 determines that the maximum length of the luggage is greater than the predetermined value, it decides to execute the seat storage process, and if it determines that the maximum length is less than or equal to the predetermined value, it does not execute the seat storage process. Here, the predetermined value may be the luggage compartment length when the state of the seat 10 is the normal state and the position of the seat 10 is the most rearward position, or it may be the luggage compartment width, or it may be the length of the diagonal of the cubic luggage compartment space.

[0043] When the control unit 30 decides to execute the seat storage process, before starting the seat storage process, it has a function of determining whether there is an obstacle within the trajectory of the seat 10 based on the information from the obstacle detection sensor 20. If the control unit 30 determines that there is no obstacle, it starts the seat storage process, and if it determines that there is an obstacle, it does not start the seat storage process.

[0044] When the control unit 30 determines that there is an obstacle and decides not to start the seat storage process, it has a function of notifying the non-execution information indicating that the seat storage process will not be executed to the occupant by the smartphone SP. The non-execution information may be, for example, voice information such as "The seat could not be stored." emitted from the speaker of the smartphone SP, or sound information such as a warning sound, or image information such as a warning display including a message displayed on the screen of the smartphone SP or changing the color of the screen to red.

[0045] When the control unit 30 determines that there is no obstacle and decides to start the seat storage process, it has a function of notifying the occupant of the execution information indicating that the seat storage process is to be executed, by the smartphone SP. As the execution information, for example, it may be voice information such as "The seat has been stored." emitted from the speaker of the smartphone SP, or it may be sound information such as a warning sound, or it may be image information such as a message displayed on the screen of the smartphone SP or a success display such as changing the screen color to blue.

[0046] In addition, when returning from the stored state to the normal state, for example, the control unit 30 may operate the seat 10 according to a request from the occupant. The request from the occupant may be output to the control unit 30, for example, when the occupant operates an operation unit provided in the vehicle interior, or may be output to the control unit 30 when the occupant operates the smartphone SP. Note that the operation of the smartphone SP may be an operation by the occupant's voice. Also, the occupant may manually return from the stored state to the normal state by operating a lever for operating the reclining mechanism, a lever for releasing the lock of the slide movement, etc.

[0047] Next, the operation of the control unit 30 will be described in detail. As shown in FIG. 3, the control unit 30 determines whether the state of the seat 10 is the stored state (S1). If it is determined in step S1 that the state is the stored state (Yes), the control unit 30 ends this process.

[0048] If it is determined in step S1 that the state is not the stored state (No), the control unit 30 determines whether the recognition unit 51 has recognized the occupant's luggage (S2). Specifically, in step S2, the control unit 30 determines whether it has acquired recognition information and luggage information from the recognition unit 51.

[0049] If it is determined in step S2 that the luggage has not been recognized (No), the control unit 30 ends this process. If it is determined in step S2 that the luggage has been recognized (Yes), the control unit 30 determines whether the maximum length of the luggage is greater than a predetermined value (S3).

[0050] If it is determined in step S3 that the maximum length of the luggage is not greater than the predetermined value (No), the control unit 30 decides not to execute the seat storage process and ends this process. If it is determined in step S3 that the maximum length of the luggage is greater than the predetermined value (Yes), the control unit 30 decides to execute the seat storage process (S4).

[0051] After step S4, the control unit 30 determines whether there is an obstacle in the movement trajectory of the seat 10 based on the information from the obstacle detection sensor 20 (S5). If it is determined in step S5 that there is no obstacle (Yes), the control unit 30 transmits the execution information to the smartphone SP (S6). After step S6, the control unit 30 executes the seat storage process (S7) and ends this process. If it is determined in step S5 that there is an obstacle (No), the control unit 30 transmits the non-execution information to the smartphone SP (S8) and ends this process without executing the seat storage process.

[0052] Next, a specific example of the operation of the control unit 30 will be described. As shown in FIGS. 4(a) to (c), when the occupant approaches the vehicle 50 with luggage, the recognition unit 51 recognizes the luggage carried by the occupant, specifies the size of the luggage, and transmits the recognition information and the luggage information to the control unit 30. As shown in FIG. 4(a), when the occupant's luggage is a small luggage such as a bag, the control unit 30 determines based on the luggage information that the maximum length of the luggage is smaller than the predetermined value and does not execute the seat storage process.

[0053] As shown in FIGS. 4(b) and 4(c), when the passenger's luggage is large luggage such as a ski board, the control unit 30 determines, based on the luggage information, that the maximum length of the luggage is greater than a predetermined value, and decides to execute the seat storage process. Next, before starting the seat storage process, the control unit 30 determines whether there is an obstacle on the rotation trajectory of the seat back 12 based on the information from the obstacle detection sensor 20.

[0054] As shown in FIG. 4(b), when there is no obstacle on the rotation trajectory of the seat back 12, the control unit 30 executes the seat storage process and switches the seat 10 to the stored state. Specifically, the control unit 30 folds the seat back 12 forward and then moves the seat 10 forward. At this time, the control unit 30 transmits the execution information to the passenger's smartphone SP, and the smartphone SP notifies the passenger of the execution information by voice, image, vibration, etc.

[0055] Here, the execution information transmitted from the control unit 30 to the smartphone SP may be information such as a flag indicating that the seat storage process is to be executed. In this case, when the smartphone SP receives the information sent from the control unit 30, it notifies the passenger of the execution information such as voice information saying "The seat has been stored."

[0056] As shown in FIG. 4(c), when there is an obstacle such as a person on the rotation trajectory of the seat back 12, the control unit 30 does not execute the seat storage process even though it has decided to execute the seat storage process. At this time, the control unit 30 transmits non-execution information to the passenger's smartphone SP, and the smartphone SP notifies the passenger of the non-execution information by voice, image, vibration, etc.

[0057] Here, the non-execution information transmitted from the control unit 30 to the smartphone SP may be information such as a flag indicating that the seat storage process is not to be executed. In this case, when the smartphone SP receives the information sent from the control unit 30, it notifies the passenger of the non-execution information such as voice information saying "The seat has not been stored."

[0058] According to the above, the following effects can be obtained in the present embodiment. Before starting the seat storage process, it is determined whether there is an obstacle within the movement trajectory of the seat 10 based on the information from the obstacle detection sensor 20. If it is determined that there is an obstacle, the seat storage process is not started. Therefore, it is possible to suppress the movement of the seat 10 that operates by executing the seat storage process from being restricted by the obstacle. As a result, it is possible to suppress a load being applied to a drive source such as a motor for operating the seat 10.

[0059] Since the obstacle detection sensor 20 is also used as a sensor for the seat belt reminder, the cost can be reduced.

[0060] In the stored state, the seat back 12 is folded so as to face the seat cushion 11, so that the storage space in the vehicle interior can be made larger than in the normal state.

[0061] Since the seat 10 disposed in front of the luggage compartment 52 located at the rear of the vehicle 50 is disposed further forward in the stored state than in the normal state, the luggage compartment space can be made larger than in the normal state.

[0062] When there is an obstacle on the movement trajectory of the seat 10, non-execution information is notified to the occupant. Therefore, an occupant outside the vehicle 50 can know that the seat 10 is not in the stored state based on the notification of the non-execution information before opening the back door 53 of the vehicle 50. Therefore, the occupant can lower the luggage held on the ground before opening the back door 53 of the vehicle 50.

[0063] When there is no obstacle on the movement trajectory of the seat 10, execution information is notified to the occupant. Therefore, an occupant outside the vehicle 50 can know that the seat 10 is in the stored state based on the notification of the execution information before opening the back door 53 of the vehicle 50. Therefore, the occupant can safely open the back door 53 of the vehicle 50 while holding the luggage.

[0064] Since the non-execution information or execution information is notified by the smartphone SP carried by the occupant, it is easier for the occupant to confirm the non-execution information or execution information than in the case where the non-execution information or execution information is notified by, for example, an in-vehicle speaker or a room lamp.

[0065] Note that the present invention is not limited to the above-described embodiment, and can be used in various forms as exemplified below. In the above embodiment, the storage state is defined as the state in which the seat back is folded and the seat is disposed at the most forward position, but the present invention is not limited to this. In the storage state, the seat in the state where the seat back is folded may be placed in a recess formed in the floor. Specifically, the seat in the state where the seat back is folded is configured to be movable forward and downward, and in the process of switching from the normal state to the storage state, after the seat back is folded, the seat may move forward and downward and be stored in the recess.

[0066] Further, the seat targeted by the present invention is not limited to the rear seat, and may be a front seat such as a driver's seat or a passenger seat. In this case, the state in which the seat back is folded and the position in the front-rear direction is the same as in the normal state may be defined as the storage state.

[0067] In addition, when the vehicle seat is a three-row specification, the second-row seat may be switched from the normal state to the storage state by hip-up or sliding forward. Here, hip-up refers to a state in which the seat rotates about a rotation axis located in front of and below the seat so that the rear part of the seat cushion is located higher than in the normal state.

[0068] When the present invention is applied to the first-row and second-row seats, the detection target of the recognition unit may be a predetermined area on the left and right outer sides of the vehicle. Also, in this case, the occupant can place luggage in the vehicle by opening the side door. Further, when the second-row seat hip-ups or slides forward, the occupant can also place luggage in the rear luggage compartment after opening the side door.

[0069] The seat storage process can also be performed on multiple seats. For example, when the vehicle seats are in a two-row layout as in the above embodiment, the seat back of the front passenger seat can be folded and stored, and the seat back of the rear seat can be folded and the rear seat can be moved forward to be in a stored state. In this case, larger luggage such as a surfboard can be loaded into the vehicle. Also, when performing the seat storage process on multiple seats, depending on the size of the luggage and the position of the passengers outside the vehicle, only the front seat or the rear seat can be put into the stored state, or both the front seat and the rear seat can be put into the stored state.

[0070] Specifically, when a passenger with luggage is located behind the vehicle and the size of the luggage is larger than the first threshold, the control unit puts only the rear seat into the stored state. Also, when a passenger with luggage is located beside the side door corresponding to the front seat of the vehicle and the size of the luggage is larger than the first threshold, the control unit puts only the front seat into the stored state. Further, when the size of the luggage is larger than the second threshold which is larger than the first threshold, regardless of the position of the passengers, the control unit puts both the front seat and the rear seat into the stored state.

[0071] The obstacle detection sensor may be a camera, a radio wave sensor, a capacitance sensor, etc. When using a camera or a radio wave sensor, obstacles within the sliding range of the seat can be detected. Also, the obstacle detection sensor may be configured by combining multiple sensors such as cameras. According to this, obstacles can be detected more accurately.

[0072] The recognition unit may be provided inside the vehicle as in the above embodiment, or may be provided outside the vehicle. In the recognition unit, for example, when an error such as the inability to recognize the luggage occurs, the control unit may prohibit the execution of the seat storage process.

[0073] When an abnormality occurs in the drive source, the control unit, or the obstacle detection sensor for operating the seat, the control unit may prohibit the execution of the reclining process.

[0074] Notification of non-execution information and execution information may be performed by an in-vehicle speaker, a room lamp, a light installed outside the vehicle, or the like.

[0075] When the seat gets caught on an obstacle during the movement of the seat due to the execution of the seat storage process, the control unit may stop the movement of the seat and return it to the original state.

[0076] A mode for executing the seat storage process and a mode for not executing the seat storage process may be switchable by the occupant.

[0077] The control unit may be capable of executing an application program that uses the seat as a controller. In this case, when the seat is in the stored state, the control unit may prohibit the execution of the application program.

[0078] The mobile terminal may be a terminal other than a smartphone SP such as a tablet terminal.

[0079] Each element described in the above-described embodiments and modifications may be implemented by arbitrarily combining them.

Description of Reference Numerals

[0080] 1 Seat system 10 Seat 20 Obstacle detection sensor 30 Control unit 50 Vehicle 51 Recognition unit

Claims

1. A plurality of seats mounted on a vehicle, comprising a recognition unit for recognizing the size of a passenger's luggage, the seats being switchable between a normal state in which a passenger can be seated and a storage state in which the storage space in the vehicle interior is larger than the normal state, an obstacle detection sensor for detecting an obstacle within the locus of the seat from the normal state to the storage state, a seat system comprising a control unit capable of executing a seat storage process for changing the state of the seat from the normal state to the storage state and determining whether or not to execute the seat storage process, the plurality of seats having a first seat and a second seat located behind the first seat, wherein the control unit when determining to execute the seat storage process based on the information from the recognition unit, before starting the seat storage process, determines whether there is an obstacle within the locus based on the information from the obstacle detection sensor, if it is determined that there is no obstacle, starts the seat storage process, if it is determined that there is an obstacle, does not start the seat storage process, when it is determined based on the information from the recognition unit that a passenger with luggage is located beside the side door corresponding to the first seat and the size of the luggage is larger than a first threshold, only the first seat is set to the storage state, when it is determined based on the information from the recognition unit that a passenger with luggage is located behind the vehicle and the size of the luggage is larger than a first threshold, in the seat storage process, only the second seat is set to the storage state. A seat system characterized by this.

2. The seat system according to claim 1, wherein when the size of the luggage is larger than a second threshold larger than the first threshold, the control unit sets both the first seat and the second seat to the storage state in the seat storage process regardless of the position of the passenger.

3. The seat system according to claim 1 or claim 2, wherein the obstacle detection sensor detects the presence or absence of an object on the seat surface of the seat.

4. The seat comprises a seat cushion and a seat back rotatable with respect to the seat cushion, In the storage state, the seat back is folded so as to face the seat cushion. The seat system according to any one of claims 1 to 3, characterized by this.

5. The second sheet is disposed in front of a luggage compartment located at the rear of the vehicle. The seat system according to any one of claims 1 to 4, wherein in the stored state, the second sheet is disposed further forward than in the normal state.

6. When the control unit determines that there is an obstacle and decides not to start the seat storage process, the control unit notifies the occupant of non-execution information indicating that the seat storage process will not be executed. The seat system according to any one of claims 1 to 5.

7. The seat system according to claim 6, wherein the control unit notifies the non-execution information by a portable terminal that can be carried by the occupant.

8. When the control unit determines that there is no obstacle and decides to start the seat storage process, the control unit notifies the occupant of execution information indicating that the seat storage process will be executed. The seat system according to any one of claims 1 to 7.

9. The seat system according to claim 8, wherein the control unit notifies the execution information by a portable terminal that can be carried by the occupant.

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