Control unit, posture improvement support apparatus, and control method

Abstract

The invention provides a control unit, a posture improvement support device, and a control method capable of notifying a seated person of the posture of the seated person. The control unit can perform control to determine the posture of a seated person sitting on the chair and output the determination result to the display device. The control unit includes: an acquisition unit that acquires pressure signals output by pressure sensors respectively provided in a plurality of movable bodies built in the chair; a calculation unit that inputs the plurality of pressure signals to a predetermined calculation formula, thereby calculating a waist curve value, which is an index relating to the posture of the seated person; a determination unit that determines the posture of the seated person on the basis of the waist curve value; and an output control unit that outputs a human body diagram corresponding to the determination result of the determination unit to a display device.

Description

Technical Field

[0001] The present invention relates to a control unit, a posture improvement support device and a control method, and more particularly to a control unit, a posture improvement support device and a control method for providing notification corresponding to the posture of a seated person. Background Art

[0002] Conventionally, there is a known posture notification device that detects the posture of a seat occupant and outputs a warning to the seat occupant. Specifically, the posture of the seat occupant is detected, and an alarm is output when the detection result is determined to be inappropriate (for example, a hunched posture with a large bend from the back to the waist). As a result, the seat occupant can correct his or her posture to an appropriate state, thereby achieving an improvement in the sitting posture.

[0003] Patent document 1 discloses a technology for determining the posture of a seated person using a pressure sensor. Specifically, it is described that: a plurality of pressure sensors are arranged in a seat, the body pressure distribution applied to the seat is obtained based on the pressure signals output by the pressure sensors, and the obtained body pressure distribution is compared with a pre-prepared adaptability graph to determine whether the posture of the seated person is appropriate or not, and an alarm is output if it is determined to be inappropriate.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Publication No. 62-178449 Summary of the invention

[0007] Problems to be solved by the invention

[0008] According to the technology described in Patent Document 1, it is possible to detect that the occupant's posture is inappropriate based on the pressure signal output by the pressure sensor. Therefore, when the occupant of the seat becomes tired and his sitting posture becomes distorted, this situation can be detected and a warning can be output to the driver. However, the occupant cannot know what his or her posture is. Therefore, there is a problem that it is impossible to specifically determine how to change his or her posture to correct his or her posture.

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a control unit capable of informing a seated person of the seated person's posture, a posture improvement support device, and a control method of the posture improvement support device.

[0010] Technical means of solving problems

[0011] The problem is solved in the following manner, that is, according to the control unit of the present invention, control is performed to determine the posture of the seated person sitting on the chair and the determination result is output to the display device, the control unit includes: an acquisition unit, which acquires pressure signals output by pressure sensors respectively provided in multiple movable bodies built into the chair; a calculation unit, which inputs the multiple pressure signals acquired by the acquisition unit into a prescribed calculation formula to calculate an index related to the posture of the seated person, namely, a lumbar curve value; a determination unit, which determines the posture of the seated person based on the lumbar curve value calculated by the calculation unit; and an output control unit, which controls to output a human body schematic diagram corresponding to the determination result of the determination unit to the display device.

[0012] According to the above structure, the pressure signals outputted by the plurality of pressure sensors built into the chair are inputted into a predetermined calculation formula, and the lumbar curve value, which is an index related to the posture of the seated person, is calculated, and the posture of the seated person is determined based on the lumbar curve value. In this way, the posture of the seated person is determined based on the lumbar curve value, which is an index related to the posture of the seated person, so that the appropriateness of the posture of the seated person can be determined quantitatively and easily. Moreover, the output control unit controls so that the determination result of the posture of the seated person determined based on the lumbar curve value is outputted to the display device as a human body diagram. Therefore, the posture of the seated person can be informed to the seated person, and the seated person can grasp his or her own posture visually.

[0013] Furthermore, the determination unit may determine whether the posture of the seated person is at least a hunchback posture, a standard posture, or a hunchback posture based on the lumbar curve value, and the output control unit controls to output a character indicating whether the posture of the seated person is the hunchback posture, the standard posture, or the hunchback posture to the human body diagram. Figure 1 The same is output to the display device.

[0014] According to the above configuration, the occupant's posture is at least a hunched posture, a hunched posture, or a standard posture, which is outputted in characters, so that the occupant can accurately understand how to change his or her posture to correct it.

[0015] Furthermore, the output control unit may perform control so as to output a time series graph indicating the temporal change of the lumbar curve value to the display device.

[0016] According to the above configuration, since the time series graph of the lumbar curve value is output to the display device, the seated person can correct his or her posture while checking the temporal change of the lumbar curve value.

[0017] Moreover, the control unit may have a movable body control unit that controls the movable body to be displaced, the calculation unit calculates a lumbar curve value variation, the lumbar curve value variation is a statistical variation of the calculated lumbar curve value, the determination unit determines the low back pain level of the seated person based on the lumbar curve value variation calculated by the calculation unit, and the movable body control unit controls the movable body to be periodically displaced based on a determination result of the low back pain level by the determination unit.

[0018] According to the above configuration, the seated person's lumbago level is determined based on the amount of change in the lumbar curve value, and the movable body is controlled to be periodically displaced based on the lumbago level. Therefore, when the amount of change in the lumbar curve value is large, that is, when the waist posture is unstable, it can be determined that the seated person suffers from lumbago. Furthermore, when it is determined that the seated person suffers from lumbago, the waist is stimulated by displacing the movable body, thereby alleviating the seated person's lumbago.

[0019] Furthermore, the control unit may include a setting accepting unit that accepts an input of a setting value related to the body shape of the seated person, and the calculation unit may calculate the lumbar curve value by inputting the pressure signal and the setting value into the prescribed calculation formula.

[0020] According to the above configuration, input of a setting value related to the body shape of the seated person is accepted, and the lumbar curve value is calculated based on the setting value. Therefore, an appropriate lumbar curve value can be calculated according to the body shape of the seated person.

[0021] Furthermore, the posture improvement support device may include: a control unit; and the chair having the plurality of movable bodies provided with the pressure sensors built therein.

[0022] According to the above configuration, the posture of the seated person sitting on the chair can be informed, and the seated person can visually understand his or her own posture.

[0023] Moreover, the problem is solved in the following manner, that is, according to the control method of the present invention, control is performed to determine the posture of a seated person sitting on a chair and the determination result is output to a display device, wherein a computer executes: an acquisition step, acquiring pressure signals output by pressure sensors respectively provided in a plurality of movable bodies built into the chair; a calculation step, calculating an index related to the posture of the seated person, i.e., a lumbar curve value, by inputting the plurality of pressure signals acquired in the acquisition step into a prescribed calculation formula; a determination step, determining the posture of the seated person based on the lumbar curve value calculated in the calculation step; and an output control step, controlling to output a human body schematic diagram corresponding to the determination result of the determination step to the display device.

[0024] According to the above structure, the pressure signals outputted by the plurality of pressure sensors built into the chair are inputted into a predetermined calculation formula, and the lumbar curve value, which is an index related to the posture of the seated person, is calculated, and the posture of the seated person is determined based on the lumbar curve value. In this way, the posture of the seated person is determined based on the lumbar curve value, which is an index related to the posture of the seated person, so the appropriateness of the posture of the seated person can be determined quantitatively and easily. Moreover, the output control unit controls so that the determination result of the posture of the seated person determined based on the lumbar curve value is outputted to the display device as a human body diagram. Therefore, the posture of the seated person can be informed to the seated person, and the seated person can grasp his or her own posture visually.

[0025] Effects of the Invention

[0026] According to the control unit, the posture improvement support device and the control method of the present invention, the posture of the seated person can be informed to the seated person, and the seated person can grasp his or her own posture visually.

[0027] Furthermore, the sitter can accurately understand how to change his or her posture in order to correct his or her posture.

[0028] Furthermore, the seated person can correct his or her posture while checking the changes in the lumbar curve value over time.

[0029] Furthermore, when it is determined that the seated person suffers from lumbago, the lumbago of the seated person can be alleviated by stimulating the lumbago by displacing the movable body.

[0030] Furthermore, the appropriate waist curve value can be calculated according to the body shape of the seated person. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] [ Figure 1 ] is a diagram for explaining an overview of a posture improvement support device.

[0032] [ Figure 2 ] is a diagram schematically showing the spine and pelvis in a standard posture diagram.

[0033] [ Figure 3 ] is a diagram schematically showing the spine and pelvis of a hunchback posture.

[0034] [ Figure 4 ] is a diagram schematically showing the spine and pelvis in a hunched posture.

[0035] [ Figure 5 ] is a diagram showing the functional structure of a posture improvement support device.

[0036] [ Figure 6 ] is a diagram showing the process of health mode processing.

[0037] [ Figure 7] is a diagram showing the flow of posture determination processing.

[0038] [ Figure 8 ] is a diagram showing the flow of posture display processing.

[0039] [ Fig. 9 ] is a diagram showing a posture display screen.

[0040] [ Fig.10 ] is a diagram showing the flow of kneading processing.

[0041] [ Fig.11 ] is a diagram showing a kneading execution screen.

[0042] [ Fig.12 ] is a stereoscopic view of the back frame of the vehicle seat of the second embodiment as viewed from the front.

[0043] [ Fig.13 ] is a back view of the pressure-bearing member of the second embodiment.

[0044] [ Fig.14 ] is a back view of the pressure-bearing member of the modified example.

[0045] [ Fig.15 ] is a front view of the back frame of the vehicle seat of the third embodiment.

[0046] [ Fig.16 ] is a rear view of the back frame of the vehicle seat of the third embodiment.

[0047] [ Fig.17 ] is a three-dimensional view of the back frame of the vehicle seat of the fourth embodiment as viewed from the rear.

[0048] [ Fig.18 ]yes Fig.17 AA cross-section diagram.

[0049] [ Fig.19 ]yes Fig.17 AA cross-sectional view of the embodiment of the present invention, and is a diagram showing a modified example of the installation position of the control unit.

[0050] [ Fig. 20 ] is a stereoscopic view of the back frame of the vehicle seat of the fourth embodiment as viewed from the front, and is a diagram showing a second modified example of the installation position of the control unit.

[0051] [ Fig.21 ] is a stereoscopic view of the back frame of the vehicle seat of the fourth embodiment as viewed from the front, and is a diagram of a third modified example of the installation position of the control unit.

[0052] [ Fig. 22 ] is a side view of the vehicle of the second embodiment, and is a view showing a state in which the sliding door is opened.

[0053] [ Fig.23 ] is along Fig. 22 The cross-sectional view taken along line AA of FIG. 1 is a diagram showing the structure inside the vehicle.

[0054] [ Fig.24 ] is a diagram showing a state in which the left and right sliding doors are opened and moved, and the vehicle seat is moved upward.

[0055] [ Fig.25 ] is a diagram showing a state in which the airbag provided in the center portion of the roof has been deployed.

[0056] [ Fig.26 ] is along Fig. 22 The cross-sectional view taken along line BB of is a diagram showing the structure inside the vehicle.

[0057] [ Fig. 27 ] is a diagram showing a state where the instrument panel has been retracted.

[0058] [ Fig.28 ] is a diagram schematically showing the structure of the instrument panel.

[0059] [ Fig.29 ] is a diagram showing a state where the footrest is pulled out from the dashboard.

[0060] [ Fig. 30A ] is a diagram schematically showing the pull-out structure of the footstool.

[0061] [ Fig. 30B ] is a diagram showing another example of the pull-out structure of the footstool.

[0062] [ Fig.31 ] is a cross-sectional view showing the interior of the vehicle when the instrument panel is moved upward.

[0063] [ Fig.32 ] is a diagram showing the interior structure of a vehicle equipped with a center console.

[0064] [ Fig.33 ] is an explanatory diagram for explaining the process of using the air chamber provided in the side support to support the occupant when the vehicle seat is rotated.

[0065] [ Fig.34 ] is an explanatory diagram for explaining the process of using an air chamber provided in an armrest to support an occupant when a vehicle seat is rotated.

[0066] [ Fig.35 ] is an explanatory diagram for explaining the process of using the armrest to support the occupant when the vehicle seat is rotated.

[0067] [ Fig.36] is a diagram schematically showing the structure of the vehicle of the first example of the third embodiment, and is a sectional view showing the structure inside the vehicle as viewed from the side.

[0068] [ Fig.37 ] is a cross-sectional view showing the seat back being stowed and in a cushioned state.

[0069] [ Fig.38 ] is along Fig.36 1 is a cross-sectional view taken along line A1-A1 of the vehicle, and is a view showing the interior structure of the vehicle as viewed from above.

[0070] [ Fig.39 ] is along Fig.36 It is a cross-sectional view taken along the A2-A2 line of the vehicle, and is a view showing the interior structure of the vehicle as viewed from the front.

[0071] [ Fig.40 ] is a diagram showing another example of a dashboard.

[0072] [ Fig.41 ] is a diagram showing another example of a vehicle and is a cross-sectional view schematically showing a vehicle including a rotating headrest on a roof panel.

[0073] [ Fig.42 ] is along Fig.41 Cross-sectional view of the A3-A3 line.

[0074] [ Fig.43 ] is a diagram showing another example of a vehicle, and is a cross-sectional view showing the structure of the vehicle as viewed from the side.

[0075] [ Fig.44 ] is along Fig.43 A cross-sectional view of the A4-A4 line.

[0076] [ Fig.45 ] is a diagram showing another example of a vehicle, and is a cross-sectional view showing the structure of the vehicle as viewed from the side.

[0077] [ Fig.46 ] is along Fig.45 A cross-sectional view of the A5-A5 line.

[0078] [ Fig.47 ] is along Fig.45 Cross-sectional view of the A6-A6 line.

[0079] [ Fig.48 ] is a diagram schematically showing the structure of the vehicle of the second embodiment, and is a sectional view viewed from the side.

[0080] [ Fig.49 ] is along Fig.48 Cross-sectional view of line B1-B1.

[0081] [ Fig.50 ] is along Fig.48 Cross-sectional view of line B2-B2.

[0082] [ Fig.51 ] is a diagram showing another example of the vehicle of the second embodiment, and is a sectional view viewed from the side.

[0083] [ Fig.52 ] is along Fig.51 Cross-sectional view of line B3-B3.

[0084] [ Fig.53 ] is a diagram showing another example of the vehicle of the second embodiment, and is a sectional view viewed from the side.

[0085] [ Fig.54 ] is a diagram schematically showing the structure of the vehicle of the third embodiment, and is a sectional view viewed from the side.

[0086] [ Fig.55 ] is along Fig.19 Cross-sectional view of the C1-C1 line.

[0087] [ Fig.56 ] is along Fig.19 Cross-sectional view of the C2-C2 line.

[0088] [ Fig.57 ] is a diagram schematically showing the structure of the vehicle of the fourth embodiment, and is a sectional view viewed from the side.

[0089] [ Fig.58 ] is a diagram showing a state where seats are arranged so that passengers can sit face to face.

[0090] [ Fig.59 ] is a diagram showing another example of a seat layout.

[0091] [ Fig.60 ] is a diagram showing another example of a seat layout.

[0092] [ Fig.61 ] is a diagram showing a modified example of the vehicle of the fourth embodiment, and is a sectional view showing the structure of a vehicle including three rows of seats.

[0093] [ Fig.62 ] is along Fig.61 Cross-sectional view of line D1-D1.

[0094] [ Fig.63 ] is a cross-sectional view showing the seat back being stored and the seat cushion being in a cushioned state.

[0095] [ Fig.64 ] is along Fig.63 Cross-sectional view of line D2-D2.

[0096] [ Fig.65 ] is a diagram showing another example of the vehicle of the fourth embodiment, and is a sectional view showing the vehicle structure viewed from the side.

[0097] [ Fig.66 ] is a diagram showing another example of a seat layout.

[0098] [ Fig.67 ] is a diagram showing another example of a seat layout.

[0099] [ Fig.68A ] is a diagram schematically showing a vehicle seat installed in a vehicle of the fifth embodiment, and is a side view of the seat with improved holding power for luggage, etc.

[0100] [ Fig.68B ] is a diagram showing another example of a vehicle seat.

[0101] [ Fig.68C ] is a diagram showing another example of a vehicle seat.

[0102] [ Fig.68D ] is a diagram showing another example of a vehicle seat.

[0103] [ Fig.68E ] is a diagram showing another example of a vehicle seat.

[0104] [ Fig.68F ] is a diagram showing another example of a vehicle seat.

[0105] [ Figure 68G ] is a diagram showing another example of a vehicle seat.

[0106] [ Figure 68H ] is a diagram showing another example of a vehicle seat.

[0107] [ Figure 68I ] is a diagram showing another example of a vehicle seat.

[0108] [ Figure 68J ] is a diagram showing another example of a vehicle seat, and is a diagram viewed from above.

[0109] [ Fig.69 ] is a cross-sectional view of a vehicle having a luggage net provided on the dashboard.

[0110] [ Fig.70 ] is a diagram schematically showing the structure of the vehicle of the sixth embodiment, and is a diagram of the vehicle viewed from the side.

[0111] [ Fig.71 ] is along Fig.70 Cross-sectional view of line E1-E1.

[0112] [ Fig.72 ] is a diagram showing an example of a seat layout, and is a diagram of the vehicle viewed from the side.

[0113] [ Fig.73 ] is a diagram showing an example of a seat layout, and is a diagram of the vehicle viewed from above.

[0114] [ Fig.74 ] is a diagram showing the structure of the vehicle of the seventh embodiment, and is a diagram of the vehicle viewed from the side.

[0115] [ Fig.75 ] is a diagram showing the structure of the vehicle of the eighth embodiment, and is a diagram of the vehicle viewed from above.

[0116] [ Fig.76 ] is a diagram showing an example of a seat layout, and is a diagram of the vehicle viewed from above.

[0117] [ Fig.77 ] is along Fig.76 The present invention is a cross-sectional view taken along the F1-F1 line of the vehicle, and is a view of the vehicle as viewed from the front. DETAILED DESCRIPTION

[0118] <<First embodiment>>

[0119] Hereinafter, the posture improvement support device 10, the control unit 30, and the control method executed by the control unit 30 according to the first embodiment of the present invention will be described with reference to the accompanying drawings. However, the embodiments described below are intended to facilitate understanding of the present invention and do not limit the present invention. That is, the present invention can be changed and improved without departing from the gist thereof, and the present invention naturally includes equivalents thereof.

[0120] Moreover, in the following description, the so-called "seat front-to-back direction" refers to the front-to-back direction of the vehicle seat S, which is the direction consistent with the front-to-back direction observed from the seated person sitting on the vehicle seat S. The so-called "vehicle front-to-back direction" refers to the direction consistent with the traveling direction of the vehicle when it is traveling. Moreover, the so-called "seat width direction" refers to the lateral width direction of the vehicle seat S, which is the direction consistent with the left-right direction observed from the seated person sitting on the vehicle seat S. Moreover, the so-called "up-down direction" refers to the up-down direction of the vehicle seat S, which is the direction consistent with the vertical direction when the vehicle is traveling on a horizontal plane. Moreover, when it is simply referred to as "outside", it refers to the side close to the outside in the direction from the center of the vehicle seat S toward the outside, and when it is referred to as "inside", it refers to the side close to the center in the direction from the outside of the vehicle seat S toward the center.

[0121] <Overview of Posture Improvement Support Device 10>

[0122] The posture improvement support device 10 is used to support improvement of the sitting posture by controlling to determine the posture of a seated person sitting in the vehicle seat S and outputting the determination result to the mobile terminal MT used by the seated person. The posture improvement support device 10 has the vehicle seat S and a control unit 30 as main components.

[0123] Figure 1 This is a perspective view of the vehicle seat S viewed from the oblique front. Figure 1 As shown, the vehicle seat S includes a seat cushion 1, a seat back 2, and a headrest 3 as main structures. Figure 1 In the figure, a part of the vehicle seat S is shown with the surface material T removed for the convenience of illustration.

[0124] The seat cushion 1 is a seat portion that supports the buttocks of a seated person. The seat cushion 1 is formed by placing a cushion material P on a seat cushion frame (not shown) that constitutes a framework of the seat cushion 1 and covering the cushion material P with a surface material T.

[0125] The seat back 2 is a backrest portion that supports the back of a seated person. The seat back 2 is formed by placing a cushion material P on a seat back frame (not shown) that constitutes the framework of the seat back 2 and covering the cushion material P with a surface material T.

[0126] A plurality of air chambers 11 are built into the seat back 2. The air chambers 11 are fluid bags that expand when compressed air is injected and contract when the compressed air is exhausted. The seat back 2 can be displaced by building the air chambers 11 into the seat back 2 and controlling the compressed air.

[0127] The air chamber 11 includes a shoulder air chamber 12 disposed at a position facing the seated person's shoulder blades, a waist air chamber 13 disposed at a position facing the waist, and a pelvic air chamber 14 disposed at a position facing the pelvis. As described later, the air chamber 11 stimulates the seated person's shoulders, waist, and pelvis by periodically repeating expansion and contraction, thereby massaging the seated person's muscles. Furthermore, the air chamber 11 may be expanded for the purpose of correcting the seated person's posture.

[0128] The shoulder air chamber 12 includes a right shoulder air chamber 12R located above the seat back 2 and disposed on the right side in the seat width direction, and a left shoulder air chamber 12L disposed on the left side in the seat width direction. By expanding / contracting the shoulder air chamber 12, the trapezius muscle or levator scapulae muscle of the seated person can be massaged.

[0129] The lumbar air chamber 13 is disposed below the shoulder air chamber 12 and in the center of the seat width direction. The lumbar air chamber 13 includes a first lumbar air chamber 13U and a second lumbar air chamber 13D located below the first lumbar air chamber 13U. By expanding / contracting the first lumbar air chamber 13U and the second lumbar air chamber 13D, the latissimus dorsi of the seated person can be massaged.

[0130] The pelvic air chamber 14 is disposed below the lumbar air chamber 13 and at the center in the seat width direction. By expanding and contracting the pelvic air chamber 14, the gluteus maximus of the seated person can be massaged.

[0131] The gas chamber 11 is provided with a pressure sensor 15 (see Figure 5 ). The pressure sensor 15 is provided in each air chamber 11 in order to detect the internal pressure of the plurality of air chambers 11. In other words, the shoulder pressure sensor 16 (right shoulder pressure sensor 16R and left shoulder pressure sensor 16L) is provided in the right shoulder air chamber 12R and the left shoulder air chamber 12L. Furthermore, the waist pressure sensor 17 (first waist pressure sensor 17U and second waist pressure sensor 17D) is provided in the first waist air chamber 13U and the second waist air chamber 13D. Furthermore, the pelvic pressure sensor 18 is provided in the pelvic air chamber 14. In this way, the pressure sensor 15 is provided at a position facing the shoulder, waist and pelvis of the seated person to detect the load generated by the seated person.

[0132] The control unit 30 may determine the posture pattern of the seated person based on the pressure signal output by the pressure sensor 15 .

[0133] Figures 2 to 4 The spine BN1 and pelvis BN2 are schematically shown as a figure showing the posture of the seated person. More specifically, Figure 2 The standard state of the spine BN1 and pelvis BN2 of a person with normal posture is shown. Figure 2 As shown, the standard spine BN1 has an S-shape that curves gently from top to bottom.

[0134] Figure 3 The state of the spine BN1 and pelvis BN2 of a person having a hunchback posture is shown. The hunchback posture is also called a round back posture, and the spine BN1 has an arc shape with the back curled up and bulging backward.

[0135] Figure 4 The state of the spine BN1 and pelvis BN2 of a person having a hunched back posture is shown. The hunched back posture is also called an anterior pelvic tilt posture or a concave back posture, and has a shape in which the waist of the spine BN1 protrudes forward.

[0136] The control unit 30 controls to display the determined posture of the seated person on the mobile terminal MT used by the seated person. As a result, the seated person can understand his or her own posture and can recognize how to improve the posture. The control unit 30 is built into the seat cushion 1, but is not limited to this. The control unit 30 may also be configured independently of the vehicle seat S and provided in the vehicle in which the vehicle seat S is provided.

[0137] return Figure 1 The headrest 3 is installed on the upper part of the seat back 2 in a manner to support the head of the seated person. Inside the headrest 3, a headrest frame (not shown) forming a skeleton of the headrest 3 is provided.

[0138] Figure 1 The reclining device (not shown) rotatably connects the seat back 2 to the seat cushion 1. The reclining device can lock the seat back 2 in a state in which it is tilted at a predetermined angle relative to the seat cushion 1. The reclining device can also be unlocked to collapse the seat back 2 forward or backward.

[0139] <Regarding the functional structure of the posture improvement support device 10>

[0140] Next, the functional structure of the posture improvement support device 10 will be described.

[0141] Figure 5 1 is a diagram showing the functional structure of the posture improvement support device 10. The posture improvement support device 10 includes a control unit 30, a pressure sensor 15, an air supply pump 20, a valve unit 21, and an air chamber 11 as its functional structure. The control unit 30 is built into the vehicle seat S and is responsible for overall control of the vehicle seat S. In addition, the control unit 30 wirelessly communicates with the mobile terminal MT used by the seated person and can output a notification signal related to the seated person's posture to the mobile terminal MT.

[0142] As described above, the pressure sensor 15 is provided in the air chamber 11 to detect the internal pressure of the air chamber 11. In other words, the pressure sensor 15 detects the load generated by the shoulders, waist and pelvis of the seated person. The pressure sensor 15 is provided inside the air chamber 11, but is not limited to this. The pressure sensor 15 may also be provided on the surface of the air chamber 11 on the side facing the seated person. The pressure sensor 15 outputs a pressure signal to the control unit 30.

[0143] The air supply pump 20 and the valve unit 21 are compressed air supply mechanisms for supplying compressed air to the air chamber 11. More specifically, the air supply pump 20 is a small air pump that generates compressed air. The valve unit 21 has a solenoid valve and a compressed air outlet, and the ejection of compressed air is controlled by controlling the solenoid valve. The compressed air is ejected from the valve unit 21, so that the air chamber 11 expands, and the compressed air is discharged, so that the air chamber 11 contracts.

[0144] The mobile terminal MT is an information communication terminal having a display unit and is a smart phone used by the seated user. The mobile terminal MT can output various setting information to the setting receiving unit 35 of the control unit 30 described later through the input operation of the seated user. Fig. 9 The posture display screen 40 and the reference Fig.11 The kneading execution screen 50 described later is displayed on the display unit. The mobile terminal MT can be a tablet terminal as long as it accepts input operations performed by the seated person and has a function as a display device. In addition, the mobile terminal MT can also be an information communication terminal mounted on the vehicle seat S or the vehicle. The mobile terminal MT is equivalent to a display device.

[0145] The control unit 30 is an electronic control unit (ECU) built into the seat cushion 1. The ECU includes a processor that is equipped with a control circuit and executes a program, a non-volatile storage medium, and a volatile storage medium. In addition, the processor functions as a signal acquisition unit 31, an LC operation unit 32, a posture determination unit 33, an air chamber control unit 34, a setting acceptance unit 35, and an output control unit 36 ​​by loading and executing the program stored in the non-volatile storage medium. The processor is equivalent to a computer.

[0146] The signal acquisition unit 31 has a communication interface and acquires the pressure signal (pressure value) output by the pressure sensor 15. More specifically, the signal acquisition unit 31 acquires the pressure signals output by the right shoulder pressure sensor 16R, the left shoulder pressure sensor 16L, the first waist pressure sensor 17U, the second waist pressure sensor 17D, and the pelvic pressure sensor 18. The signal acquisition unit 31 may also have an amplifier circuit for amplifying the pressure signal, an analog digital converter (ADC) for converting an analog signal into a digital signal, and a filter circuit for removing noise components. The signal acquisition unit 31 is equivalent to the acquisition unit.

[0147] The LC operation unit 32 obtains a plurality of pressure signals (pressure values) obtained by the signal acquisition unit 31, and inputs the pressure values ​​into a prescribed operation formula, thereby calculating the lumbar curve value. Here, the so-called lumbar curve value refers to an index used to comprehensively evaluate the sitting posture of the seated person based on the pressure signals of the shoulders, waist, and pelvis. In other words, by comparing the LC value calculated by the LC operation unit 32 with a predetermined threshold value, it is possible to determine whether the posture of the seated person is a standard appropriate posture. Moreover, by comparing the LC value with a predetermined threshold value, it is possible to determine whether the posture of the seated person is hunched or hunched. The lumbar curve value is also referred to as the LC value.

[0148] If the lumbar curve value is set to LC, the lumbar curve value can be calculated by the following calculation formula (1).

[0149] LC=a1×X1+a2×X2+a3×X3+a4×X4+a5×X5+b (1)

[0150] Here, X1, X2, X3, X4, and X5 are pressure values ​​outputted by the right shoulder pressure sensor 16R, the left shoulder pressure sensor 16L, the first waist pressure sensor 17U, the second waist pressure sensor 17D, and the pelvic pressure sensor 18, respectively. Moreover, a1, a2, a3, a4, a5, and b are coefficients set in advance by a sitting posture experiment conducted on a plurality of subjects. In this way, the waist curve value can be calculated by the calculation formula (1) including a linear first-order polynomial.

[0151] Here, the sitting posture experiment is explained. In the sitting posture experiment, the posture information of the subject is first obtained by a camera or other shooting device or a motion sensor. Next, a doctor or an expert performs a posture assessment on the acquired posture information and assigns a lumbar curve value. Then, the subject is seated in an experimental chair with a built-in pressure sensor 15 to obtain a measured value including a pressure signal. By repeatedly performing the posture assessment and measured value acquisition performed by the expert on multiple subjects, the correlation between the lumbar curve value and the measured pressure signal can be analyzed. Specifically, by performing a multivariate regression analysis on the lumbar curve value and the measured value, coefficients a1, a2, a3, a4, a5 and b can be obtained.

[0152] The formula for calculating the lumbar curve value is not limited to the calculation formula (1). The lumbar curve value may be calculated based on the setting value and the pressure signal accepted by the setting acceptance unit 35 described later. In this case, the lumbar curve value can be calculated by the following calculation formula (2).

[0153] LC=a1×X1+a2×X2+a3×X3+a4×X4+a5×X5+a6×X6+a7×X7+b (2)

[0154] Here, X6 and X7 are set values ​​related to the body type of the seated person, which are the weight and height of the seated person, respectively. Also, a6 and a7 are coefficients set by the sitting posture experiment.

[0155] The LC calculation unit 32 calculates the statistical variation of the lumbar curve value, namely, the LC variation. The LC variation is the standard deviation of the lumbar curve value when the lumbar curve value is continuously calculated over a predetermined measurement period. The LC variation may also be the sum of squares of deviations between the lumbar curve value and the average value during the measurement period.

[0156] The measurement period is preferably five minutes. As described later, the LC variation is used by the posture determination unit 33 to determine the low back pain level of the seated person. Therefore, if the measurement period is shorter than five minutes, the accuracy of the low back pain level determination will decrease. Moreover, if the measurement time is longer than five minutes, the time until the low back pain level determination result is obtained will become too long, and thus the seated person may feel a sense of distrust. However, the measurement period is not limited to five minutes, and may be set by the seated person. Moreover, the measurement period may also be automatically set based on the convergence condition of the LC variation. The LC variation is equivalent to the lumbar curve value variation.

[0157] The posture determination unit 33 determines the posture of the seated person based on the lumbar curve value calculated by the LC calculation unit 32. More specifically, the posture determination unit 33 determines whether the posture of the seated person is "hunched posture", "slightly hunched posture", "standard posture", "slightly hunched posture", or "hunched posture" based on the lumbar curve value. Furthermore, the posture determination unit 33 may also determine whether the posture of the seated person is "hunched posture", "standard posture", or "hunched posture". The posture determination unit 33 determines the posture of the seated person by comparing the lumbar curve value with a predetermined threshold value. The threshold value may also be settable by the seated person.

[0158] Furthermore, the posture determination unit 33 determines the level of back pain of the seated person based on the LC variation calculated by the LC calculation unit 32. More specifically, the posture determination unit 33 determines whether the seated person suffers from back pain based on the LC variation. As described later, when the posture determination unit 33 determines that the seated person suffers from back pain, the air chamber 11 is controlled to expand / contract periodically, thereby performing a kneading process to massage the waist muscles of the seated person. The posture determination unit 33 determines the level of back pain by comparing the LC variation with a predetermined threshold value. The threshold value may also be settable by the seated person.

[0159] The air chamber control unit 34 controls the expansion / contraction of the air chamber 11 by outputting control signals to the air supply pump 20 and the valve unit 21. When the posture determination unit 33 determines that the seated person suffers from lumbago, the air chamber control unit 34 controls the expansion / contraction of the air chamber 11 in a predetermined expansion / contraction mode. Here, if a specific example of the expansion / contraction mode is used for explanation, the air chamber 11 is first controlled to expand for five seconds. Next, the air chamber 11 is controlled to contract for five seconds. And, the control of the air chamber 11 to expand for five seconds is repeated again. This expansion / contraction control of the air chamber 11 is repeated for one minute. In this way, the waist muscles of the seated person who is determined to suffer from lumbago can be massaged to reduce the burden on the seated person. The air chamber control unit 34 is equivalent to the movable body control unit.

[0160] The setting accepting unit 35 accepts input of setting values ​​made by the seated person. Specifically, the setting accepting unit 35 accepts input of setting values ​​related to the body shape of the seated person, namely, height and weight. As described above, the LC operation unit 32 inputs the input height, weight and the pressure signal (pressure value) output by the pressure sensor 15 into the operation formula (2), thereby calculating the lumbar curve value. In addition, the setting accepting unit 35 can also input the amount of compressed air injected into the air chamber 11 as a setting value. In this way, the intensity of the stimulation applied to the lumbar muscles of the seated person during the massage process can be appropriately changed.

[0161] The output control unit 36 ​​controls to output a human body diagram corresponding to the determination result obtained by the posture determination unit 33. Fig.42 The posture display screen 40 (refer to Fig. 9 ) is output to the mobile terminal MT. Specifically, the output control unit 36 ​​communicates with the mobile terminal MT via a wireless communication interface (not shown) of the vehicle seat S, thereby controlling the posture display screen 40 to be output to the mobile terminal MT. The details will be described later, but on the posture display screen 40, a human body icon corresponding to the posture of the seated person is displayed. Fig.42 A character string indicating whether the posture of the seated person is "hunched posture", "slightly hunched posture", "standard posture", "slightly hunched posture" or "hunched posture" is displayed together. In addition, a time series graph 47 indicating the temporal change of the lumbar curve value is displayed on the posture display screen 40.

[0162] The output control unit 36 ​​controls the kneading execution screen 50 (see FIG. 1 ) during the execution of the kneading process described later. Fig.11 ) is output to the mobile terminal MT.

[0163] <About the process of health mode processing>

[0164] Next, the flow of the health mode processing executed by the control unit 30 is described. The health mode processing is a processing performed for the following purpose, that is, to determine the posture of the seated person based on the pressure signal output by the pressure sensor 15, and to inform the seated person of the determined posture, thereby urging the seated person to improve the sitting posture. The health mode processing is started by the control unit 30 when the start operation of the health mode processing is performed via the mobile terminal MT used by the seated person, but it is not limited to this. It can also be started when a predetermined condition is met.

[0165] Figure 6 It shows the process of health mode processing. Figure 6As shown, the control unit 30 first detects the seated person by determining whether there is a seated person sitting (step S10). Specifically, the control unit 30 can detect the seated person by determining whether there is a load generated by the seated person based on the pressure signal output by the pressure sensor 15. In addition, the control unit 30 can also detect the seated person based on the output signal of the seated person sensor (not shown) built into the vehicle seat S.

[0166] If the control unit 30 determines that a seated person has not been detected (step S10 : No), the control unit 30 waits until a seated person is detected.

[0167] On the other hand, if it is determined that a seated person is detected (step S10: Yes), the control unit 30 acquires the setting value (step S11). Specifically, the control unit 30 acquires the setting value input by the seated person through the mobile terminal MT operated by the seated person via the wireless communication line. The setting value includes the height and weight of the seated person.

[0168] Next, the control unit 30 executes a posture determination process (step S12 ). Figure 7 2 shows the flow of the posture determination process performed by the control unit 30. Figure 7 As shown, the control unit 30 first obtains the pressure signal output by the pressure sensor 15 (step S20, obtaining step). Specifically, the control unit 30 obtains the pressure signals (pressure values) output by the right shoulder pressure sensor 16R, the left shoulder pressure sensor 16L, the first waist pressure sensor 17U, the second waist pressure sensor 17D and the pelvic pressure sensor 18.

[0169] Next, the control unit 30 calculates the lumbar curve value (LC value) (step S21, calculation step). Specifically, the control unit 30 inputs the pressure signal (pressure value) obtained in step S20 and the set value obtained in step S11 into the calculation formula (2), thereby calculating the lumbar curve value.

[0170] Next, the control unit 30 executes a gesture display process (step S22 ). Figure 8 2 shows the flow of the gesture display process executed by the control unit 30. Figure 8 As shown, the control unit 30 first compares the waist curve value with the preset threshold value TH1 to determine whether the seated person is in a hunchback posture (step S30, determination step). If the control unit 30 determines that the waist curve value is less than the threshold value TH1 (step S30: yes), it determines that the seated person is in a hunchback posture. Next, the control unit 30 causes the human body gesture corresponding to the hunchback to Fig.42The gesture display screen 40 is displayed on the mobile terminal MT used by the seated person (step S31, output control step). More specifically, the control unit 30 wirelessly communicates with the mobile terminal MT, thereby controlling the mobile terminal MT to output the gesture display screen 40 to its display unit.

[0171] Fig. 9 4 shows a posture display screen 40 output to the display unit of the mobile terminal MT in real time. Fig. 9 As shown, on the posture display screen 40 , three display areas, namely, a posture display area 41 , a graph display area 46 , and a history display area 48 , are formed.

[0172] In the posture display area 41, a human body diagram schematically showing the posture of the seated person is output. Fig.42 , a posture determination display 43 that can determine the posture of the seated person, a lumbar curve value display 44 and posture improvement support information 45. Fig.10 As an example, a screen example is shown when the seated person is judged to be in a "slightly hunched" posture. In the posture display area 41, a display corresponding to the judgment result of the sitting posture is output. Specifically, when the seated person is judged to be in a "hunched posture", a human body gesture corresponding to the "hunched posture" is displayed. Fig.42 The posture containing the character string "hunchback" is determined to be displayed 43. Similarly, when it is determined that the seated person is in the "standard posture", "slightly hunched posture", or "hunched posture", the human body gestures corresponding to the respective postures are output. Fig.42 The posture is determined to be displayed 43. Moreover, in the human body Fig.42 The posture improvement support information 45 for supporting the posture improvement of the seated person is output below. The seated person indicates the posture of the seated person by the human body. Fig.42 With the posture determination display 43 , one can visually grasp one's own posture, and can effectively improve the sitting posture through the posture improvement support information 45 .

[0173] A time series graph 47 showing the temporal change of the lumbar curve value is displayed in the graph display area 46. The time series graph 47 is updated in real time by the output control unit 36 ​​of the control unit 30. The seated person can recognize the temporal change of the lumbar curve value by checking the time series graph 47, and can recognize that the state of the waist is unstable and the possibility of suffering from lumbago is high when the lumbar curve value changes greatly.

[0174] In the history display area 48, daily history information 49 showing the history of lumbar curve values ​​calculated in the past is displayed. The seated person can recognize the change and tendency of his / her posture through the daily history information 49. Thus, when the seated person sees the tendency of the lumbar curve value to change in the direction of deviating from the desired value, the seated person can be urged to improve his / her posture.

[0175] return Figure 8If the lumbar curve value is not determined to be less than the threshold value TH1 (step S30: No), the control unit 30 compares the lumbar curve value with the threshold value TH2 to determine whether the seated person is in a slightly hunched posture (step S32). If the control unit 30 determines that the lumbar curve value is less than the threshold value TH2 (step S32: Yes), it determines that the seated person is in a slightly hunched posture. In addition, the control unit 30 causes the human body gesture corresponding to the slightly hunched posture to be displayed. Fig.42 The gesture confirmation display 43 is displayed on the gesture display screen 40 of the mobile terminal MT (step S33), and the gesture display process is terminated.

[0176] If the lumbar curve value is not determined to be less than the threshold value TH2 (step S32: No), the control unit 30 compares the lumbar curve value with the threshold value TH3 to determine whether the seated person is in the standard posture (step S34). If the control unit 30 determines that the lumbar curve value is less than the threshold value TH3 (step S34: Yes), it determines that the seated person is in the standard posture. In addition, the control unit 30 causes the human body gesture corresponding to the standard posture to be displayed. Fig.42 The gesture confirmation display 43 is displayed on the gesture display screen 40 of the mobile terminal MT (step S35), and the gesture display process is terminated.

[0177] If it is not determined that the lumbar curve value is less than the threshold value TH3 (step S34: No), the control unit 30 compares the lumbar curve value with the threshold value TH4 to determine whether the seated person is in a slightly hunched posture (step S36). If the control unit 30 determines that the lumbar curve value is less than the threshold value TH4 (step S36: Yes), it determines that the seated person is in a slightly hunched posture. In addition, the control unit 30 causes the human body gesture corresponding to the slightly hunched posture to be displayed. Fig.42 The gesture confirmation display 43 is displayed on the gesture display screen 40 of the mobile terminal MT (step S37), and the gesture display process is terminated.

[0178] If it is not determined that the lumbar curve value is less than the threshold value TH4 (step S36: No), the control unit 30 determines that the seated person is in a hunched posture. Next, the control unit 30 causes the human body gesture corresponding to the hunched posture to be Fig.42 The gesture confirmation display 43 is displayed on the gesture display screen 40 of the mobile terminal MT (step S38), and the gesture display process is terminated.

[0179] return Figure 7, the control unit 30 determines whether a prescribed measurement time has passed after the posture display process (step S23). The measurement time is, for example, five minutes. If it is determined that the measurement time has not passed (step S23: No), the control unit 30 returns to step S20 and repeats steps S20 to S23. On the other hand, if it is determined that the measurement time has passed (step S23: Yes), the control unit 30 ends the posture determination process.

[0180] return Figure 6 , the control unit 30 performs kneading processing (step S13). Fig.10 2 shows the flow of the kneading process performed by the control unit 30. Fig.10 As shown, the control unit 30 first calculates the LC variation (step S40). Specifically, the control unit 30 calculates the sum of squares of deviations between the waist curve value and the average value.

[0181] Next, the control unit 30 compares the LC variation with the variation threshold value (step S41). Specifically, the control unit 30 compares the LC variation with the predetermined variation threshold value to determine whether the seated person suffers from low back pain.

[0182] If it is determined that the LC variation is greater than the variation threshold, the control unit 30 controls the air chamber 11 to expand / contract it (step S42). Specifically, the control unit 30 obtains an expansion / contraction pattern for expanding / contracting the air chamber 11, and controls the air supply pump 20 and the valve unit 21 based on the expansion / contraction pattern. As a result, the air chamber 11 expands / contracts.

[0183] Furthermore, the control unit 30 expands / contracts the air cell 11 and outputs the kneading execution screen 50 on the display section of the mobile terminal MT.

[0184] Fig.11 FIG. 5 shows a kneading execution screen 50 output to the display unit of the mobile terminal MT. Fig.11 As shown, on the kneading execution screen 50, two display areas, namely a kneading position display area 51 and a kneading state display area 54, are formed, and a mode selection button 56 and a display switching button 57 are provided.

[0185] In the kneading position display area 51, a kneading indication indicating the kneading position of the air cell 11 is output. Fig.52 and kneading auxiliary information 53 for auxiliary explanation of the kneading content. Fig.11 The figure shows that the waist of the seated person is being kneaded. Fig.52 and kneading auxiliary information 53, so the seated person can understand what kind of kneading is being performed.

[0186] The remaining time of the kneading process is displayed in the kneading state display area 54. However, the display is not limited to the remaining time of the kneading process, and the elapsed time after the start of the kneading process may be further displayed.

[0187] The mode selection button 56 can be operated by the seated person to change the expansion / contraction mode of the air cell 11. Thus, the seated person can perform kneading treatment based on the expansion / contraction mode that he or she likes.

[0188] The display switching button 57 can be operated by the seated user to switch the output of the display unit of the mobile terminal MT to the posture display screen 40. Thus, the seated user can perform the kneading process while checking his / her own posture and waist curve value on the posture display screen 40.

[0189] The posture improvement support device 10 configured as above can inform the seated person of the seated person's posture. Therefore, the seated person can accurately improve his or her posture after understanding his or her own posture.

[0190] <Second embodiment>

[0191] The structure of the posture improvement support device 10 of the first embodiment of the present invention has been described above, but the embodiment described is only an example for facilitating the understanding of the present invention and does not limit the present invention. That is, the present invention can be changed and improved without departing from the main purpose thereof, and the present invention naturally includes equivalents thereof.

[0192] In the above-described embodiment, the control unit 30 in charge of controlling the vehicle seat S is described as being built in the seat cushion 1 , but the present invention is not limited thereto. The control unit 30 may be built in the seat back 2 .

[0193] Fig.12 1 is a perspective view of the back frame 100 of the vehicle seat S according to the second embodiment as viewed from the front. Fig.12 As shown, the back frame 100 is formed into a frame shape by left and right side frames 110 extending in the vertical direction, an upper frame 120 connecting the upper and lower ends of the left and right side frames 110, and a lower frame 130. A pressure-receiving member 140 is disposed inside the frame-shaped back frame 100.

[0194] The left and right side frames 110 include a side frame plate 111 on a flat plate between an upper end portion connected to the upper frame 120 and a lower end portion connected to the lower frame 130 .

[0195] The upper frame 120 includes a pipe bent into a substantially U-shape. The upper frame 120 has a horizontal portion 121 extending horizontally at its upper end portion, and vertical portions 122 extending vertically downward from both ends of the horizontal portion 121. A headrest support portion 123 for supporting a headrest post (not shown) of the headrest 3 is mounted on the horizontal portion 121.

[0196] The pressure-receiving member 140 is a plate-shaped member made of resin and is interposed between the left and right side frames 110. The pressure-receiving member 140 includes a pressure-receiving portion 141 located in the center of the seat width direction and supporting the back of the seated person, and support portions 142 located on the left and right of the pressure-receiving portion 141. The pressure-receiving member 140 is supported by being connected to the left and right side frames 110 via connecting wires 143. More specifically, the pressure-receiving member 140 is engaged with the upper connecting wire 143A and the lower connecting wire 143B via the engaging claws 145, and is configured to be able to receive the load received from the back of the seated person while deforming backward.

[0197] The pressure-receiving member 140 is formed with a reinforcing rib 144 protruding toward the rear. More specifically, the pressure-receiving member 140 is formed with a first reinforcing rib 144A extending in the up-down direction, a second reinforcing rib 144B connecting the first reinforcing rib 144A and extending in the horizontal direction, and a third reinforcing rib 144C inclined toward the left-right direction. The first reinforcing rib 144A, the second reinforcing rib 144B, and the third reinforcing rib 144C can improve the rigidity of the pressure-receiving member 140 with respect to the direction in which the reinforcing ribs extend.

[0198] Fig.13 1 is a rear view of the pressure-bearing member 140. A central recess 141A that curves from the rear to the front is formed above the pressure-bearing member 140 and in the center in the left-right direction. The control unit 30 is disposed on the rear side of the pressure-bearing member 140 in a manner of being accommodated in the central recess 141A. By arranging the control unit 30 in the central recess 141A, the seated person can sit on the vehicle seat S without feeling any discomfort on the back. In addition, the valve unit 21 can also be accommodated in the central recess 141A. By arranging the valve unit 21 in the central recess 141A, the seated person can sit on the vehicle seat S without feeling any discomfort on the back. Moreover, compressed air can be efficiently delivered to the shoulder air chamber 12, the lumbar air chamber 13, and the pelvic air chamber 14 built into the seat back 2.

[0199] <Modification>

[0200] In the above-described embodiment, the control unit 30 is described as being disposed so as to be accommodated in the central recess 141A located at the center of the pressure receiving member 140 in the seat width direction, but the present invention is not limited thereto.

[0201] Fig.14 FIG. 1 is a rear view of a pressure-bearing member 140 of a modified example. Fig.14 As shown, a right recess 141B and a left recess 141C are formed on the left and right sides of the seat width direction. Therefore, the control unit 30 can be arranged at any one of the right recess 141B and the left recess 141C, and the valve unit 21 can be arranged at the other. Thus, as in the above-mentioned embodiment, the seated person can sit on the vehicle seat S without feeling discomfort on the back. Moreover, compressed air can be efficiently delivered to the shoulder air chamber 12, the waist air chamber 13, and the pelvic air chamber 14 built into the seat back 2. In addition, electrical components other than the control unit 30 and the valve unit 21 can also be arranged in the central recess 141A, the right recess 141B, and the left recess 141C.

[0202] <Third embodiment>

[0203] In the above embodiment, the control unit 30 and the valve unit 21 are arranged so as to be accommodated in the recess formed in the pressure receiving member 140, but the present invention is not limited thereto. The control unit 30 and the valve unit 21 are preferably arranged at a position that does not overlap with the gas chamber 11 in the front-rear direction.

[0204] Fig.15 2 is a front view of a back frame 200 of a vehicle seat S according to a third example of the first embodiment. Fig.16 2 is a rear view of the back frame 200. Fig.15 , Fig.16 As shown, the back frame 200 is formed into a frame shape by left and right side frames 210 extending in the up-down direction, an upper frame 220 respectively connecting the upper and lower ends of the side frames 210, and a lower frame (not shown). In addition, a pressure-bearing member 240 with an air chamber 11 installed is arranged inside the frame-shaped back frame 200.

[0205] The pressure-receiving member 240 is a plate-shaped member made of resin and is interposed between the left and right side frames 110. The pressure-receiving member 240 is supported by being connected to the left and right side frames 210 by connecting wires 243. More specifically, the pressure-receiving member 240 is connected to the left and right side frames 210 by means of engagement claws 244 (see Fig.16 ) and engage with the upper connecting wire 243A and the lower connecting wire 243B, and are configured to be able to deform toward the rear while bearing the load received from the seated person.

[0206] The waist air chamber 13 and the pelvic air chamber 14 are suspended and fixed in the pressure-receiving member 240 by the air chamber fixing part 245. More specifically, the pelvic air chamber 14 is fixed to the pressure-receiving member 240 so as to overlap with the lower part of the waist air chamber 13 in the front-back direction. The air chamber fixing part 245 includes a screw hole formed in the pressure-receiving member 240 and a screw inserted through the screw hole.

[0207] The waist air chamber 13 and the pelvic air chamber 14 are connected to a tube 246 for supplying compressed air from the valve unit 21 .

[0208] like Fig.16 As shown in FIG. 1 , the control unit 30 is disposed above the lumbar air chamber 13. In other words, the control unit 30 is disposed on the pressure receiving member 240 at a position that does not overlap with the air chamber 11 in the front-rear direction. Thus, it is possible to suppress the structural member located further behind the back of the seated person from becoming larger in the front-rear direction. Furthermore, even when the air chamber 11 is inflated, the seated person can sit on the vehicle seat S without feeling discomfort in the back.

[0209] <Fourth embodiment>

[0210] In the above-described embodiment, the control unit 30 and the valve unit 21 are attached to the pressure receiving member 140 , but the present invention is not limited thereto. The control unit 30 and the valve unit 21 may be attached to the back frame 300 .

[0211] Fig.17 1 is a perspective view of a back frame 300 of a vehicle seat S according to a fourth example of the first embodiment, as viewed from the rear. Fig.17 As shown, the back frame 300 is formed into a frame shape by left and right side frames 310 extending in the up-down direction, an upper frame 320 connecting the upper and lower ends of the side frames 310, and a lower frame (not shown).

[0212] The side frame 310 includes a metal plate and is divided into two in the vertical direction. Specifically, the side frame 310 is formed by partially overlapping a first side frame piece 311 located at an upper part and a second side frame piece 312 located at a lower part.

[0213] The upper frame 320 includes a metal plate, and both ends in the seat width direction are welded to the upper ends of the first side frame piece 311 .

[0214] The upper frame 320 is bent into a substantially U-shape when viewed from the side. Fig.17 The AA cross-section diagram is Fig.18 As shown, the upper frame 320 includes an upper wall portion 321 , a lower wall portion 322 facing the upper wall portion 321 , and a front wall portion 323 connecting the upper wall portion 321 and the lower wall portion 322 .

[0215] An upper reinforcing portion 321b and a lower reinforcing portion 322b are formed on the upper wall portion 321 and the lower wall portion 322, respectively. The upper reinforcing portion 321b is formed by partially recessing the upper wall portion 321. Similarly, the lower reinforcing portion 322b is formed by partially recessing the lower wall portion 322. The number and arrangement of the upper reinforcing portions 321b and the lower reinforcing portions 322b are not limited to Fig.17 The upper reinforcing portion 321b may also be formed at the front end of the upper wall portion 321 and the boundary between the upper wall portion 321 and the front wall portion 323. Similarly, the lower reinforcing portion 322b may also be formed at the front end of the lower wall portion 322 and the boundary between the lower wall portion 322 and the front wall portion 323.

[0216] like Fig.18 As shown, an upper curved portion 321 c curved upward is formed at the rear end of the upper wall portion 321. Also, a lower curved portion 322 c curved downward is formed at the rear end of the lower wall portion 322.

[0217] The front wall portion 323 has a central portion 323a including a flat surface. The central portion 323a, the upper wall portion 321, and the lower wall portion 322 form a storage area for storing the control unit 30. In other words, the control unit 30 is mounted on the upper frame 320 in the center of the seat width direction in a state surrounded by the upper wall portion 321, the lower wall portion 322, and the front wall portion 323 from three directions. As a result, it is possible to suppress interference between the control unit 30 and other components, and by mounting the control unit 30 on the upper frame 320, it is possible to suppress the size of the back frame 300. In addition, electrical components other than the control unit 30, such as the valve unit 21, may also be arranged in the storage area.

[0218] <Modification>

[0219] In the fourth embodiment, the control unit 30 is installed on the back side of the front wall 323 , but the present invention is not limited thereto. The control unit 30 may be installed on the front side of the lower wall 322 .

[0220] Fig.19 yes Fig.17 AA cross-sectional view of the embodiment of the present invention shows a state where the control unit 30 is mounted on the lower curved portion 322c of the lower wall portion 322. In other words, the control unit 30 is mounted on the upper frame 320 in a state surrounded from three directions by the lower curved portion 322c of the lower wall portion 322. Thus, as in the fourth embodiment described above, interference between the control unit 30 and other components can be suppressed, and by mounting the control unit 30, enlargement of the back frame 300 can be suppressed.

[0221] <Second Modification>

[0222] Furthermore, in the fourth embodiment, the control unit 30 is described as being mounted on the upper frame 320 , but the present invention is not limited thereto. The control unit 30 may be mounted on the side frame 310 .

[0223] Fig. 20 FIG. 3 shows a state where the control unit 30 is mounted on the second side frame piece 312. Fig. 20As shown, the control unit 30 is mounted on the second side frame piece 312 of the right side frame 310 of the left and right side frames 310. On the other hand, the airbag module AM ​​is mounted on the second side frame piece 312 of the left side frame 310. In other words, the control unit 30 is mounted on the side frame 310 of the left and right side frames 310, which side frame 310 does not have the airbag module AM ​​mounted thereon. Thus, the control unit 30 can be mounted on the side frame 310 without interfering with the airbag module AM. Moreover, it is possible to suppress the control unit 30 from affecting the operation of the airbag module AM ​​when the airbag module AM ​​is in operation.

[0224] Here, the installation position of the control unit 30 is described in further detail. The second side frame piece 312 is formed with a concave-convex portion 312a for improving the rigidity of the second side frame piece 312 at a substantially central position in the vertical direction, and a flat portion 312b connected to the reclining device below the concave-convex portion 312a. The control unit 30 is installed on the flat portion 312b. By installing the control unit 30 on the flat portion 312b, its installation strength can be improved.

[0225] <Third Modification>

[0226] As a third modified example, the control unit 30 may be mounted so as to be accommodated in a recessed portion formed in the recessed and convex portion 312 a of the second side frame piece 312 .

[0227] Fig.21 The control unit 30 is shown in a state where it is mounted on the concave-convex portion 312a of the second side frame piece 312. By mounting the control unit 30 on the side frame 310, interference between the control unit 30 and other components can be suppressed. Moreover, the concave-convex portion 312a has a higher rigidity than the flat portion 312b, so that the vibration resistance and impact resistance of the control unit 30 can be improved.

[0228] In the above-mentioned embodiment, the calculation formula (1) and the calculation formula (2) are described as linear first-order polynomials, but the present invention is not limited thereto. The waist curve value may be calculated by a calculation formula including a second-order polynomial or a third-order polynomial.

[0229] Furthermore, in the above-described embodiment, the air chamber 11 is described as being built into the vehicle seat S, but the present invention is not limited thereto. Any movable body built into the vehicle seat S and capable of stimulating the muscles of the seated person by displacement may be used, and an elastic body including a driving member including an actuator may be built into the seat S.

[0230] Furthermore, in the above-described embodiment, the posture improvement support device 10 is installed in a vehicle as an example to explain the configuration example, but the present invention is not limited thereto. The posture improvement support device 10 may be installed in a seat of a vehicle having wheels such as a train or other ground-moving vehicles, or an airplane or ship that moves on other than the ground. Furthermore, the posture improvement support device 10 may be installed in a chair used in an office or a home.

[0231] <<Second embodiment>>

[0232] Hereinafter, a second embodiment of the present invention will be described.

[0233] <<Technical Field>>

[0234] A second embodiment of the present invention relates to a vehicle, and more particularly to a vehicle having an opening and closing body that can slide.

[0235] <<Background Technology>>

[0236] Conventionally, there is known a vehicle in which a vehicle seat mounted in the vehicle is configured to be movable so that the arrangement of the vehicle seat can be arranged in an internal space of the vehicle body.

[0237] For example, in the vehicle disclosed in Japanese Patent Gazette No. 2021-142771, the multiple vehicle seats carried respectively include a rotating mechanism, a reclining mechanism, and a sliding mechanism. By moving the multiple vehicle seats, a bed surface on which passengers can lie down can be formed even in a narrow space.

[0238] <<Disclosure of the Invention>>

[0239] <<Problems to be solved by the invention>>

[0240] In the layout-capable vehicle disclosed in Japanese Patent Laid-Open No. 2021-142771, the seats are configured to be movable in a narrow space, so it may be difficult to get on and off depending on the position of the vehicle seat. In addition, in order to make the vehicle seat movable in the vehicle cabin, interior equipment that can support various layouts is required.

[0241] A second embodiment of the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle with improved riding comfort for passengers.

[0242] Furthermore, another object is to provide a vehicle having interior equipment that can support various layouts.

[0243] <<Technical means to solve the problem>>

[0244] The problem is solved by the following method, that is, the vehicle according to the present invention is a vehicle comprising: an opening and closing body slidably movable on the side of the vehicle, and at least one seat inside the vehicle and having a headrest, at least a portion of the upper portion of the opening and closing body being located directly above the headrest and closer to the inside of the vehicle than the inner end portion of the headrest.

[0245] Since a portion of the upper portion of the opening and closing body is located further inward than the inner end of the headrest of the seat, when the opening and closing body is opened, it opens to above the headrest. Therefore, when getting on or off, even if the passenger stands up, the passenger's head can be prevented from hitting the roof, thereby making it easier to get on or off. In addition, the sense of openness when the opening and closing body is opened and moved is improved. Therefore, a vehicle with improved passenger comfort can be provided.

[0246] Moreover, in the vehicle, the opening and closing body may include a main body portion located at a side of the vehicle and an upper side portion constituting an upper portion of the opening and closing body, and the main body portion and the upper side portion are formed integrally.

[0247] By integrally forming the main body portion and the upper side portion of the opening and closing body, a unified appearance can be achieved.

[0248] Moreover, in the vehicle, the opening and closing body may include a main body portion located at a side portion of the vehicle and an upper side portion constituting an upper portion of the opening and closing body, and the main body portion and the upper side portion are independently formed.

[0249] By independently forming the main body and the upper side portion of the opening and closing body, the opening and closing body can be easily manufactured.

[0250] Moreover, in the vehicle, the seat may have a height adjustment device for adjusting the height from the floor surface of the vehicle, and the seat is constructed so that through the height adjustment device, at least the upper end of the headrest can be moved to a position higher than the lower end of the upper part of the opening and closing body.

[0251] Since the upper end of the headrest of the seat can be moved above the lower end of the upper portion of the opening and closing body, the sense of openness when the opening and closing body is opened and moved is further improved.

[0252] Moreover, in the vehicle, the opening and closing body can be arranged on the left and right sides of the vehicle, and an occupant protection device is provided in the central part of the roof of the vehicle sandwiched by the upper parts of the left and right opening and closing bodies.

[0253] By providing an occupant protection device (for example, an airbag) at the center portion of the roof, it is possible to protect a seated occupant from the center portion of the vehicle.

[0254] Furthermore, in the vehicle, a dashboard may be provided at the front of the interior of the vehicle, and the dashboard may be configured as a retractable storage box.

[0255] By configuring the instrument panel as a retractable storage box, the interior space of the vehicle can be expanded, thereby providing a vehicle having interior equipment that can support various layouts.

[0256] Moreover, in the vehicle, the instrument panel can be retracted along the left-right direction of the vehicle.

[0257] Since the instrument panel can be extended and retracted in the left-right direction, the space inside the vehicle can be easily expanded.

[0258] Furthermore, in the vehicle, the instrument panel may be movable in an up-down direction of the vehicle.

[0259] By making the instrument panel movable in the vertical direction, the lower part of the instrument panel becomes available, thereby making further effective use of the space in the vehicle. Furthermore, by moving the instrument panel to the upper part, it is also possible to block the sight from the outside when parking, for example.

[0260] Furthermore, the vehicle may include a seat track, which is arranged on a floor surface of the vehicle so that the seat can slide, and the seat track is arranged below the instrument panel.

[0261] By arranging the seat rails below the instrument panel, the seats can be moved to below the instrument panel, thereby widening the width of the layout.

[0262] Furthermore, in the vehicle, an odor sensor for measuring odor inside the vehicle may be provided on the instrument panel.

[0263] By installing an odor sensor, it is possible to measure the odor inside the vehicle and improve the environment inside the vehicle based on the measurement results.

[0264] Moreover, in the vehicle, the seat may have a seat rotation device that rotates around the axis in the up-down direction of the vehicle, and may have expansion components on the left and right sides of the seat. When the seat rotates around the axis in the up-down direction of the vehicle, the expansion components located on the opposite side to the rotation direction expand.

[0265] When the seat rotates, the expansion member located on the side opposite to the rotation direction expands, thereby suppressing the body of the occupant from tilting toward the side opposite to the rotation direction, improving the force for maintaining the occupant's posture, and suppressing the occupant's discomfort.

[0266] <<Effects of the Invention>>

[0267] According to the vehicle of the present invention, it is possible to provide a vehicle with improved ease of getting on and off of passengers.

[0268] Moreover, by integrally forming the main body portion and the upper side portion of the opening and closing body, a unified appearance can be achieved.

[0269] Moreover, by independently forming the main body and the upper side portion of the opening and closing body, the opening and closing body can be easily manufactured.

[0270] Furthermore, since the upper end of the headrest of the seat can be moved above the lower end of the upper portion of the opening and closing body, the sense of openness when the opening and closing body is opened and moved is further improved.

[0271] Furthermore, by providing an occupant protection device (for example, an airbag) at the center portion of the roof, it is possible to protect the seated person from the center portion of the vehicle.

[0272] Furthermore, by configuring the instrument panel as a retractable storage box, the interior space of the vehicle can be expanded, thereby providing a vehicle having interior equipment that can support various layouts.

[0273] Furthermore, since the instrument panel can be extended and retracted in the left-right direction, the space inside the vehicle can be easily expanded.

[0274] Furthermore, since the instrument panel can be moved in the vertical direction, the lower part of the instrument panel can be used, thereby further effectively utilizing the space in the vehicle. Furthermore, since the instrument panel is moved to the upper part, it is also possible to block the sight from the outside when parking, for example.

[0275] Furthermore, by arranging rails below the instrument panel, the seats can be moved to below the instrument panel, thereby widening the width of the layout.

[0276] Furthermore, by providing an odor sensor, it is possible to measure the odor inside the vehicle and improve the environment inside the vehicle based on the measurement result.

[0277] Furthermore, when the seat rotates, the expansion member located on the side opposite to the rotation direction expands, thereby preventing the body of the occupant from tilting toward the side opposite to the rotation direction, thereby improving the force for maintaining the occupant's posture and preventing the occupant from feeling uncomfortable.

[0278] <<Specific implementation method>>

[0279] Hereinafter, the structure of the vehicle 401 having a slidable opening and closing body of the first embodiment of the second embodiment will be described with reference to the accompanying drawings. However, the embodiments described below are intended to facilitate understanding of the present invention and do not limit the present invention. That is, the present invention may be changed and improved without departing from its main purpose, and the present invention naturally includes its equivalents.

[0280] Furthermore, in the following description, the contents related to the materials, shapes and sizes of components such as the seat (vehicle seat 410), dashboard 420, airbag device 423 mounted in vehicle 401 are merely specific examples and do not limit the present invention.

[0281] In addition, the following uses an electric car that can be driven automatically as a vehicle 401 including a slidable opening and closing body to illustrate its structural example. However, the present invention can also be applied to a manually driven engine car. Moreover, it is not limited to ground-moving vehicles with wheels such as cars and trains, and can also be applied to airplanes or ships that move outside the ground.

[0282] In the following description, the so-called "front-rear direction" refers to the front-rear direction of the vehicle 401, which is the direction that coincides with the traveling direction of the vehicle when it is traveling. In addition, the so-called "width direction" and "left-right direction" refer to the lateral width direction and left-right direction of the vehicle 401, and the so-called "up-down direction" refers to the up-down direction of the vehicle 401, which is the direction that coincides with the vertical direction when the vehicle 401 is traveling on a horizontal plane.

[0283] Moreover, in the following description, when "seat" is added to various directions such as "seat width direction" and "seat height direction", it means the direction relative to the vehicle seat 410 mounted in the vehicle 401, and when "vehicle" is added to various directions such as "inside of the vehicle" and "outside of the vehicle", it means the direction relative to the vehicle 401.

[0284] <Vehicle 401>

[0285] use Figure 22 to Figure 26 The structure of vehicle 401 will be described. Fig. 22 4 is a side view of the vehicle 401, and is a view in which the rear door 402R, which is a sliding door, is in an open state. Fig.23 It is along Fig. 22 It is a surface view of the AA line, and is a diagram showing the structure inside the vehicle. Fig.24 is a diagram showing a state where the vehicle seat has been moved upward. Fig.25 This is a diagram showing a state in which the airbag provided in the center portion of the roof 403 is deployed. Fig.26 It is along Fig. 22 Cross-sectional view of line BB.

[0286] Vehicle 401 is a four-wheel electric vehicle, such as Figure 22 to Figure 26 As shown, tires 406 are provided at the four corners of the floor panel 404 , and a battery 405 for supplying electric power to the motor and the like is provided below the floor panel 404 .

[0287] The vehicle 401 has a front window 408a at the front and a rear window 408b at the rear as the windows 408. The vehicle 401 includes side windows 408c at the sides.

[0288] Furthermore, on the floor 404 of the vehicle 401, as Fig.23 and Fig.26 As shown in FIG. 4 , vehicle seats 410 are arranged in three rows. The vehicle 401 includes left and right front seats 410F arranged in the first row, left and right middle seats 410M arranged in the second row, and left and right rear seats 410R arranged in the third row on the floor 404. The front seats 410F, the middle seats 410M, and the rear seats 410R have basically the same structure, and in the following description, they are referred to as vehicle seats 410 when no special distinction is required.

[0289] <Vehicle seat 410>

[0290] The vehicle seats 410 (seats) each include: a seat cushion 411 that supports the thighs and buttocks of a seated occupant H; a seat back 412 that supports the back of the occupant H; and a headrest 413 that is provided at the upper end of the seat back 412 to support the head of the occupant H.

[0291] The rear end of the seat cushion 411 is connected to the lower end of the seat back 412, and a reclining device 414 is provided at the connecting portion. The reclining device 414 allows the seat back 412 to rotate relative to the seat cushion 411 so that the rearward tilt angle can be adjusted.

[0292] Below the seat cushion 411, a height adjustment device 415 is provided for adjusting the height of the vehicle seat 410. Below the height adjustment device 415, a seat rotation device 416 is provided for rotating the vehicle seat 410 about the vertical direction of the vehicle 401 (vertical direction with respect to the floor 404) as an axis. Below the seat rotation device 416, a sliding device is provided for sliding the vehicle seat 410 in the front-rear direction on the floor 404 of the vehicle 401.

[0293] The sliding device includes an upper rail (not shown) provided below the vehicle seat 410 and a seat rail 417 arranged on the floor surface of the vehicle 401. By sliding the upper rail on the seat rail 417, the vehicle seat 410 can slide and move in the front and rear directions in the vehicle.

[0294] In addition, in this embodiment, the seat rail 417 is configured as a long rail embedded in the floor 404. Fig.26As shown, the front seat 410F, the middle seat 410M, and the rear seat 410R arranged on the right side of the vehicle are arranged on the seat track 417 on the driver's seat side so as to be able to slide or rotate. Moreover, the front seat 410F, the middle seat 410M, and the rear seat 410R arranged on the left side of the vehicle are arranged on the seat track 417 on the passenger seat side so as to be able to slide or rotate.

[0295] The vehicle seat 410 may also be detachable from the seat rail 417. In the present embodiment, the seat rail 417 is shared by the front seat 410F and the rear seat 410R arranged in the front-rear direction, but the seat rail 417 may not be shared. That is, the front seat 410F may use an independent pair of rails, and the middle seat 410M and the rear seat 410R may be movably arranged on a pair of rails provided independently of the rails.

[0296] Furthermore, the seat rail 417 disposed on the driver's seat side and the seat rail 417 on the passenger's seat side are preferably disposed on a flat surface portion of the floor covering an area above the battery 405 .

[0297] The seat track 417 disposed on the passenger seat side is as follows Fig.26 As shown in FIG. 4 , the front portion of the seat rail 417 is arranged to be located below the instrument panel 420. Therefore, when the lateral width of the instrument panel 420 is reduced, the front seat 410F on the passenger side can be moved to the front end of the vehicle 401 (see FIG. 4 ). Fig. 27 ).

[0298] Fig.26 The vehicle seats 410 shown in the figure move only in the front-rear direction, but rail devices movable in the left-right direction may be added to each vehicle seat 410 so that the seat can move in the left-right direction.

[0299] Moreover, the sliding movement, rotational movement, and vertical movement (height adjustment) of the vehicle seat 410 can be performed manually by the occupant, and a driving device such as a motor can also be provided to configure each vehicle seat 410 to automatically slide, rotate, and move up and down.

[0300] When the vehicle seat 410 can automatically slide, rotate, or move up and down, for example, the occupant can operate the registered seat layout by using a transmitter he / she holds. The transmitter operated by the occupant can be formed integrally with an operating switch for instructing the locking or opening of the door, or can be formed as a component independent of the operating switch.

[0301] <Vehicle door 402>

[0302] Vehicle doors 402 (opening and closing bodies) that can be opened and closed relative to the vehicle body are provided on the left and right outer sides of the vehicle 401. The passenger H sitting on the vehicle seat 410 can get on and off the vehicle by opening and moving the vehicle door 402. In the vehicle 401 of this embodiment, front doors 402F are provided on the left and right sides of the front seat 410F in the first row, and rear doors 402R are provided on the left and right sides of the middle seat 410M in the second row. A detachable door pocket 402e is provided on the inner side of the front door 402F. A window portion 402c is provided on the rear door 402R.

[0303] like Fig. 22 As shown in FIG. 4 , the rear door 402R is configured as a sliding door that can slide toward the rear. Fig.23 As shown, the rear door 402R is configured to include not only the side portion of the vehicle 401 but also a portion of the roof of the vehicle 401. Specifically, the rear door 402R is configured such that at least a portion of the upper portion of the rear door 402R is arranged directly above the headrest 413 of the center seat 410M and closer to the inside of the vehicle 401 than the inner end 413a of the headrest 413.

[0304] In further detail, the rear door 402R includes a door body portion 402a located at the side of the vehicle 401, and a door upper portion 402b constituting the upper portion of the rear door 402R, and the door upper portion 402b is formed so as to extend from the upper end portion of the door body portion 402a toward the inner side of the vehicle 401. In addition, the inner end portion 402ba of the door upper portion 402b is configured so as to be located closer to the inner side of the vehicle 401 than the inner end portion 413a of the headrest 413.

[0305] By configuring the upper portion of the rear door 402R and the door upper side portion 402b in this way, when the rear door 402R is opened, it will open to above the vehicle seat 410, so that the head of the occupant can be prevented from hitting the roof 403 when standing up, and the verticality is improved. In addition, the sense of openness when the rear door 402R is opened is improved.

[0306] The door body portion 402a and the door upper portion 402b may be formed integrally. In particular, when the interior trim member including the skin of the door body portion 402a and the interior trim member including the skin of the door upper portion 402b are formed integrally, a unified sense of the door appearance is achieved, which is preferred.

[0307] In addition, the door body portion 402a and the door upper portion 402b may also be configured as independent components. By configuring them as independent components, the rear door 402R can be manufactured more easily.

[0308] Moreover, if Fig.23 As shown, a sunroof 402d may be provided at a portion of the door upper portion 402b.

[0309] Furthermore, a skylight 403a may also be provided on the roof 403. By providing the skylight 402d and the skylight 403a, the occupants can get a sense of openness even when the rear door 402R is closed.

[0310] When the rear door 402R of the vehicle 401 of this embodiment is opened, Fig.24 As shown, the vehicle roof is partially opened. Therefore, when the rear door 402R is in the open state, the vehicle seat 410 can also be raised by the height adjustment device 415. In the present embodiment, the vehicle seat 410 is configured so that at least the upper end of the headrest 413 can be moved to a position higher than the lower end 402f of the upper portion of the rear door 402R in the closed state by the height adjustment device 415. In other words, the vehicle seat 410 is configured so that the headrest 413 can be made higher than the lower end of the roof 403 by the height adjustment device 415. By making the upper end of the headrest 413 movable to a position higher than the lower end 402f of the upper portion of the rear door 402R, the occupant H can further obtain a sense of openness.

[0311] Furthermore, when the headrest 413 of the vehicle seat 410 is made higher than the lower end of the upper portion of the rear door 402R, that is, when the headrest 413 is made higher than the roof 403, the headrest 413 is away from the notification components such as speakers and lighting provided in the vehicle. Therefore, the function of the notification component can be improved compared to the normal case, that is, when the vehicle seat 410 is arranged in the vehicle.

[0312] For example, when the notification component is a speaker, the notification sound is made louder. When the notification component is lighting, it is made to emit light more strongly. Thus, even when the position of the vehicle seat 410 is raised and the head of the occupant is outside the vehicle, notification can be made.

[0313] Moreover, it is also possible to Fig.24 As shown, a speaker 419 is arranged as a notification member on a vehicle seat 410. At this time, since the notification sound may be emitted to the outside of the vehicle, it is desirable to make the sound louder than usual.

[0314] <Roof airbag device 403b>

[0315] In the roof 403 of the vehicle 401, a roof airbag device 403b as an occupant protection device may also be provided in the central portion sandwiched between the upper portions of the left and right rear doors 402R (the upper door portions 402b). Fig.25 As shown, the bag body of the roof airbag device 403b can swell downward to protect the occupant H.

[0316] <Instrument panel 420>

[0317] use Figure 26 to Figure 35 To illustrate other equipment of this embodiment. Fig.26 As shown, an operating system box 407 and an instrument panel 420 are provided at the front of the interior of the vehicle 401. A steering wheel 407a (steering wheel) or pedals (not shown) operated by the driver are installed in the operating system box 407. An operating panel for operating the devices in the vehicle is provided in the instrument panel 420, and the occupants of the vehicle 401 can use the operating panel to input changes in the configuration of the vehicle seats 410, etc.

[0318] Furthermore, the instrument panel 420 is provided with a function of storing objects and can be used as a storage box.

[0319] The rudder 407a of the vehicle 401 or the door pocket 402e provided in the front door 402F is configured to be freely attachable and detachable, and the detached rudder 407a or door pocket 402e can be stored in the widened instrument panel 420. By storing the detached rudder 407a and door pocket 402e in the instrument panel 420, the freedom of movement of the vehicle seat 410, such as forward and backward movement or rotational movement, is expanded.

[0320] The instrument panel 420 is further configured to be retractable in the width direction of the vehicle 401. Fig. 27 As shown, the instrument panel 420 may be configured to be retractable in the width direction (left-right direction) of the vehicle 401 .

[0321] By reducing the size of the instrument panel 420, in other words, miniaturizing it, the freed space can be used as a seat space, for example, Fig. 27 As shown, the front seat 410F is rotated and arranged in the seat space, thereby serving as a footrest for the passenger sitting in the middle seat 410M. Furthermore, if a massage device or a movable device for moving the passenger's feet is provided in the seat cushion 411 or the seat back 412 of the front seat 410F, the seat space can be effectively utilized.

[0322] The instrument panel 420 may be extended and retracted manually or automatically by providing a motor, etc. When the instrument panel 420 is extended and retracted automatically, the occupant H may send a command signal using a transmitter capable of wireless communication, and the instrument panel 420 may be extended and retracted according to the signal.

[0323] use Fig.28 The structure of the retractable instrument panel 420 is described below. The instrument panel 420 includes a panel body 421 and a drawer 422 stored in the panel body 421. When used as a storage box, Fig.28As shown in the upper section of the drawing, the drawer 422 is drawn out toward the left side of the vehicle 401, so that objects such as the rudder 407a or the door pocket 402e can be stored in the storage portion 424. A refrigeration device can also be provided in the storage portion 424, and the instrument panel 420 can be used as a refrigerator.

[0324] In the case where the instrument panel 420 is reduced in size and the seat space is expanded, as shown in FIG. Fig.28 As shown in the middle section, the pull-out portion 422 is moved toward the right direction of the vehicle 401 and the pull-out portion 422 is stored in the panel body 421.

[0325] Furthermore, a storage table 425 may be provided on the upper portion of the panel body 421 of the instrument panel 420 so that when the drawer 422 is stored in the panel body 421, the drawer 422 may be stored in the panel body 421. Fig.28 As shown in the lower section of the vehicle 401, the storage table 425 is pulled out to the left of the vehicle 401 for use. By moving the front seat 410F to the front of the vehicle 401, the seat layout can be set to a learning mode relative to the storage table 425.

[0326] Moreover, it is also possible to Fig.29 As shown, the wall portion of the vehicle compartment side of the instrument panel 420 is set as a cushion, which is rotated around the upper rotation axis 427a and fixed at an arbitrary position, thereby being used as the footrest portion 427.

[0327] By providing the footrest portion 427 on the rear surface of the instrument panel 420 or the surface on the interior side of the vehicle cabin, an occupant sitting on the front seat 410F can place his feet and relax, thereby making effective use of the vehicle cabin space.

[0328] Regarding the extraction of the footrest portion 427, for example, Fig. 30A As shown, an upper rotating shaft 427a is provided on the upper side of the drawer portion 422, and the footrest portion 427 is drawn out from the bottom.

[0329] Moreover, the footrest portion 427 can be removed as shown in the figure. Fig. 30B As shown, a lower rotating shaft 427b is provided on the lower side of the drawer portion 422, and the footrest portion 427 is drawn out from the upper side.

[0330] Another example of the instrument panel 420 is shown in Fig.31 The instrument panel 420A is configured to be movable in the up-down direction. Fig.31 The state where the instrument panel 420A moves upward is shown. For example, when parking, the instrument panel 420 can be moved upward to block the view from the outside. At this time, the front window 408a can also be changed to a light-shielding state. In addition, the rear window 408b and the side window 408c can also be changed to a light-shielding state.

[0331] Furthermore, the sight line position of the occupant H may be changed by opening the sunroof 403a and raising the rear seat 410R using the height adjustment device 415.

[0332] Moreover, by moving the dashboard 420 upward, a space can be formed below the dashboard 420, so the front seat 410F can be moved forward while its height is lowered, and a part of the seat cushion 411 can be stored under the dashboard 420, thereby effectively utilizing the space behind the front seat 410F.

[0333] <Center console 430>

[0334] Fig.32 A vehicle 401A is shown as another example. The vehicle 401A is provided with a center console 430 between the left and right vehicle seats 410. In more detail, the center console 430 is provided between the front seat 410F on the driver's side and the front seat 410F on the passenger's side. The center console 430 may be provided with operating parts such as a shift lever and a side brake lever or a storage part such as a cup holder.

[0335] If the center console 430 is provided, the rotation movement of the vehicle seat 410 may be hindered. Fig.32 As shown, when the vehicle seat 410 is rotated, a portion of the center console 430 is deformed so as not to interfere with the vehicle seat 410. Specifically, a portion of the side portion of the center console 430 is deformed to form a recessed portion 431.

[0336] When the front seat 410F on the passenger seat side rotates, the left side portion of the center console 430 is deformed. Furthermore, when the front seat 410F on the driver seat side rotates, the right side portion is deformed.

[0337] When the front seat 410F on the passenger side is rotated, the drawer portion 422B of the instrument panel 420B located in the front may be further deformed to form a recessed portion 428 .

[0338] The instrument panel 420B includes a panel body 421B and a drawer 422B that can be stored in the panel body 421B. When the front seat 410F on the passenger side is rotated, the drawer 422B can also be stored in the panel body 421B.

[0339] Furthermore, the inner wall portion or the door pocket 402e of the front door 402F or the rear door 402R may be deformed to form a recessed portion.

[0340] <Odor sensor 432>

[0341] In order to quantitatively measure the environment in the vehicle, especially the odor, an odor sensor 432 may be installed in the vehicle cabin. In the present embodiment, the odor sensor 432 is installed on the instrument panel 420 as a component for detecting the state in the vehicle.

[0342] The instrument panel 420 is also equipped with an airbag device 423 as an occupant protection device, so the odor sensor 432 is installed at a position avoiding the installation portion of the airbag device 423, for example, the deployment path of the bag body of the airbag device 423. By installing the odor sensor 432 avoiding the installation portion of the airbag device 423, the influence on the airbag device 423 can be suppressed.

[0343] The odor sensor 432 may be provided on interior components other than the instrument panel 420 , such as the roof 403 , the vehicle seat 410 , and the vehicle door 402 .

[0344] When the interior component is retractable like the instrument panel 420 of the present embodiment, or when the roof 403, the vehicle door 402, the center console 430, the sun visor, etc. have a deformable portion and may be retractable, the odor sensor 432 may be provided at a position avoiding the retractable portion or the deformable portion. By providing the position avoiding the deformable portion, the detection accuracy of the odor sensor 432 can be suppressed from decreasing.

[0345] When the odor sensor 432 is installed in the interior member, it can be stored. For example, as a simple method, a cover covering the odor sensor 432 can be opened and closed, and when the odor sensor 432 is not used, the cover is opened and closed manually or automatically.

[0346] In the case of automatically storing the odor sensor 432, when the entry of the occupant H is confirmed by the sensor, the odor sensor 432 stored in the interior member such as the instrument panel 420 may be exposed in the vehicle. For example, when the entry of the occupant H is detected, the odor sensor 432 may be protruded toward the vehicle compartment. By exposing the odor sensor 432, the detection capability is improved.

[0347] The odor sensor 432 may be configured to be stored in an interior component such as the instrument panel 420 after completing the detection of the odor, for example, after a predetermined time (5 to 10 seconds) has passed since the detection of the vehicle entry.

[0348] The detection of the occupant is performed, for example, using a seating sensor provided on the vehicle seat 410 or a camera provided in the vehicle.

[0349] When the odor sensor 432 is installed in an interior component such as the instrument panel 420, it can be integrated with other sensors such as a temperature sensor, a humidity sensor, a sound sensor, a light sensor, etc. to form a single unit, thereby greatly improving the installation workability.

[0350] When a plurality of sensors, namely a first sensor and a second sensor (the detection object may be different from or the same as the detection object of the first sensor) are arranged as a unit on the instrument panel 420, they may be arranged at a position avoiding an occupant protection device (airbag device, etc.).

[0351] <Occupant support member>

[0352] As described above, the vehicle seat 410 installed in the vehicle 401 of the present embodiment includes a seat rotating device 416, which can change the direction around the rotation axis in the vertical direction of the vehicle 401. In the vehicle seat 410 including such a seat rotating device 416, it is expected to improve the force of maintaining the posture of the occupant and suppress the discomfort caused by the seat rotation.

[0353] The vehicle seat 410 of this embodiment is provided with a side support 418 (occupant support member) for supporting an occupant when the seat portion moves. Fig.33 As shown in the upper section of , the side supports 418 are arranged on the left and right side portions of the vehicle seat 410 , and more specifically, include air chambers (expansion components) provided inside the bank portion 411 a of the seat cushion 411 and inside the bank portion 412 a of the seat back 412 .

[0354] The temple 418 supports the occupant H when the vehicle seat 410 moves (including forward and backward movement and rotational movement). The temple 418 is activated when movement of the vehicle seat 410 is detected, for example, when the occupant H operates a seat movement switch.

[0355] The movement of the vehicle seat 410 may be started after it is detected that the temple 418 has entered the operating state, preferably after it is detected that the operation of the temple 418 has been completed.

[0356] When the movement of the vehicle seat 410 and the operation of the temple 418 are set to be simultaneous, the movement speed is made slower than usual in the initial stage of the movement of the vehicle seat 410. This can suppress the feeling of discomfort.

[0357] When the movement of the vehicle seat 410 in the front-rear direction is detected, the temples 418 located on the left and right sides may be operated.

[0358] Furthermore, when the rotation of the vehicle seat 410 is detected, that is, when the seat rotation switch is operated, the temple 418 arranged on the side different from the rotation direction can be operated.

[0359] Specifically, if Fig.33 As shown in the middle section of FIG. , when the vehicle seat 410 faces left (counterclockwise, Fig.33When the vehicle seat 410 is rotated (in the direction of arrow E), the side support 418 arranged on the right side of the vehicle seat 410, more specifically, the cushion air chamber 418Ra and the back air chamber 418Rb operate to support the occupant H by their expansion.

[0360] The body of the occupant can be prevented from tilting in the opposite direction to the moving direction (rotation direction) due to the movement (rotation) of the vehicle seat 410. This can suppress the occupant's discomfort or improve the occupant's posture retention.

[0361] Furthermore, until the movement (rotation) of the vehicle seat 410 is completed or when it is completed, the temple 418 disposed on the same side as the movement direction (rotation direction) of the vehicle seat 410 can be operated.

[0362] Specifically, if Fig.33 As shown in the lower part of , when the vehicle seat 410 is rotated to the left, when the rotation is completed, the side support 418 arranged on the left side of the vehicle seat 410, more specifically, the cushion air chamber 418La and the back air chamber 418Lb further operate and expand, thereby supporting the occupant H.

[0363] By operating the temple 418 in this way, it is possible to prevent the body of the occupant from tilting in the same direction as the moving direction (rotation direction) immediately after the seat has moved (rotated). This can suppress the occupant's discomfort or improve the occupant's posture retention.

[0364] Moreover, it is also possible to Fig.34 Like the vehicle seat 410 ′ shown in the upper stage of FIG. 1 , the temple 418 is provided on the armrest 412 b provided on the side of the seat back 412 .

[0365] like Fig.34 As shown in the middle section of FIG. 4 , when the vehicle seat 410 ′ is rotated to the left (in the direction of arrow F), the side support 418 (armrest air chamber 418Rc) of the armrest 412b provided on the right side of the vehicle seat 410 ′ expands to support the occupant H. At this time, the cushion air chamber 418La or the back air chamber 418Lb located on the same side as the armrest air chamber 418Rc may also expand.

[0366] Moreover, if Fig.34 As shown in the lower section of , when the rotation is completed, the side support 418 (armrest air chamber 418Lc) arranged on the left side of the vehicle seat 410' expands to support the occupant H. At this time, the cushion air chamber 418La or the back air chamber 418Lb may also operate on the same side as the armrest air chamber 418Lc.

[0367] Fig.33 and Fig.34The temple 418 shown is implemented by an air chamber, but the temple 418 may be implemented by a structure other than an air chamber as long as the structure is capable of supporting the occupant.

[0368] Fig.35 A temple 418A is shown as another example of the temple 418 . Fig.35 The side support 418A of the vehicle seat 410" shown in the upper section of the figure is realized by an armrest 412b which is provided at the side of the seat back 412 and can automatically move between a storage position and a use position. The structure is such that the occupant's posture is maintained by moving the armrest 412b located in the storage position to the use position when the seat is moved (rotated).

[0369] like Fig.35 As shown in the middle section of FIG. 4 , when the vehicle seat 410 ″ is rotated to the left, only the armrest 412 b located on the right side opposite to the rotation direction moves from the storage position to the use position.

[0370] And, if Fig.35 As shown in the lower section, until the rotation of the vehicle seat 410 is completed or at the end, the armrest 412b located on the left side on the same side as the rotation direction is moved to the use position, thereby suppressing the tilt of the occupant after the rotation is completed (tilting toward the rotation direction).

[0371] The second embodiment of the present invention is described above using the figures. In this embodiment, a vehicle door that slides backward when opened is used as an example of a slidable opening and closing body, and a vehicle 401 including the vehicle door is described, but the slidable opening and closing body may also be a front door that slides forward when opened. Furthermore, it may also be a window that can slide in the front-to-back direction or the width direction. By positioning the upper portion of the window closer to the inside of the vehicle than directly above the headrest, the sense of openness of the occupant when the window is opened is improved.

[0372] Moreover, the retractable instrument panel 420 or the deformable center console 430 installed in the vehicle 401 is applicable not only to vehicles with slidable doors, but also to vehicles including doors that are usually opened and closed in the left and right directions.

[0373] <<Third Embodiment>>

[0374] Hereinafter, a third embodiment of the present invention will be described.

[0375] <<Technical Field>>

[0376] A third embodiment of the present invention relates to a vehicle, and more particularly to a vehicle having a vehicle seat.

[0377] <<Background Technology>>

[0378] Conventionally, there is known a vehicle in which a vehicle seat mounted in the vehicle is configured to be movable so that the arrangement of the vehicle seat can be arranged in an internal space of the vehicle body.

[0379] For example, in the vehicle disclosed in Japanese Patent Gazette No. 2021-142771, the multiple vehicle seats carried respectively include a rotating mechanism, a reclining mechanism, and a sliding mechanism. By moving the multiple vehicle seats, a bed surface on which passengers can lie down can be formed even in a narrow space.

[0380] <<Disclosure of the Invention>>

[0381] <<Problems to be solved by the invention>>

[0382] In conventional vehicles, seats are deformed or rotated to move, thereby forming a bed surface, etc., so that the interior space can be further expanded for use, which requires a complicated process. Therefore, it is required to be able to expand the interior space of a vehicle for use with a simpler structure.

[0383] The third embodiment of the present invention is made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle that can be used by simply enlarging the interior space, thereby improving the comfort and convenience.

[0384] Furthermore, another object is to provide a vehicle having various layouts or equipment that can support layouts.

[0385] <<Technical means to solve the problem>>

[0386] The problem is solved in the following manner, that is, according to a vehicle of the present invention, a vehicle has an interior space for passengers to enter, and the vehicle includes: a wall portion, having a floor, an upper wall and side walls surrounding the interior space; a mattress, arranged on the floor, supporting at least the lower body of the passenger; and a seat back, supporting the upper body of the passenger, the seat back being storable and mounted to a storage portion provided in any one of the mattress, the upper wall and the side wall.

[0387] Since the seat back can be stowed in the storage portion provided in any one of the mattress, the upper wall and the side wall, the seat back can be stowed in the storage portion, thereby providing a means of transportation that can be used by simply expanding the interior space, thereby improving comfort or convenience.

[0388] Furthermore, in the vehicle, the seat back can be connected to the mattress and stored in the storage portion provided on the mattress.

[0389] Since the mattress has a storage portion for storing the connected seat back, the seat back can be easily stored, so that the internal space can be expanded for use.

[0390] Furthermore, in the above-mentioned vehicle, the storage portion may be provided behind a connection portion where the seat back and the mattress are connected.

[0391] The seat back can be moved rearward and stored in the storage portion, thereby easily expanding the interior space.

[0392] Furthermore, in the vehicle, when the seat back is stored in the storage portion of the mattress, the support surface of the seat back and the support surface of the mattress can become flush.

[0393] By making the support surface of the seat back flush with the support surface of the mattress, the bed surface can be easily manufactured.

[0394] Furthermore, in the vehicle, a plurality of the seat backs and the storage portions respectively corresponding to the plurality of the seat backs may be provided in a single mattress.

[0395] By providing a plurality of seat backs and storage portions corresponding to the seat backs in a single mattress, the number of man-hours required to assemble the mattress to a vehicle and the number of parts required for the vehicle seat can be reduced.

[0396] Furthermore, in the vehicle, the seat back can be stored independently from the mattress in the storage portion provided on the upper wall.

[0397] By storing the seat back in the storage portion provided on the upper wall, the seat back can be easily stored, and the interior space can be expanded for use.

[0398] Furthermore, in the above-mentioned vehicle, a foot insertion recess for inserting the feet of the occupant may be formed on the support surface of the mattress.

[0399] By forming the foot insertion recess on the support surface of the mattress, the occupant can insert the foot into the foot insertion recess and stretch the foot, thereby being able to sit in a normal sitting posture.

[0400] Furthermore, the above-mentioned means of transportation may include a filling member that can be filled into the foot insertion recess.

[0401] By providing the filling member that can be filled into the foot insertion recess, the mattress can be placed in a bed state.

[0402] Furthermore, in the vehicle, the seat back can be stored independently from the mattress in the storage portion provided on the side wall.

[0403] By storing the seat back in the storage portion provided in the side wall, the seat back can be easily stored, and the interior space can be expanded for use.

[0404] Furthermore, the vehicle may include a battery storage section for storing batteries, at least a portion of the battery storage section is disposed on the floor, and an upper surface of the battery storage section disposed on the floor is located at a higher position than an upper surface of the mattress.

[0405] By arranging a portion of the battery storage section on the floor and positioning the upper surface of the battery storage section at a position higher than the upper surface of the mattress that serves as the seat cushion, the battery conventionally disposed under the floor can be removed to provide a low floor, thereby improving mobility.

[0406] Furthermore, in the above-mentioned vehicle, the battery storage portion may include a mounting portion for mounting an external device.

[0407] By installing external devices in the battery storage section, the internal space can be used effectively.

[0408] Furthermore, the vehicle may include: an equipment storage portion for storing equipment for the vehicle; and a display device mounted on the equipment storage portion via a retractable arm portion.

[0409] The display device can be moved to the vicinity of the operator by the arm, so that the operator can view images and the like at the hand side of the screen.

[0410] Furthermore, the transportation means may include a sensor unit for acquiring biological information of the occupant, and the display device may be configured to automatically move based on the biological information acquired by the sensor unit.

[0411] Biometric information, such as the seat in which the occupant is seated or the occupant's body shape, may be used to arrange the display device at an appropriate position.

[0412] Furthermore, the vehicle may include a track disposed on the floor and a table slidably mounted on the track.

[0413] By providing a table that can slide on a track, for example, a table can be provided separately from the seat (cushion or seat back) where the passenger sits, and the passenger who wants to use it can move the table aside to use it. Unnecessary tables can be omitted, thereby making the vehicle lighter.

[0414] Furthermore, in the transportation vehicle, the table can be detachably mounted on the track.

[0415] By making the table detachable from the rail, the table can be removed from the rail when not in use, thereby further expanding the internal space for use.

[0416] Furthermore, in the vehicle, an occupant protection device may be provided at the foot of the table.

[0417] By providing an occupant protection device at the legs of the table, it is possible to protect occupants sitting around the table.

[0418] Moreover, the vehicle may include: a plurality of seats having the seat backs and the mattresses, which are rotatably and slidably mounted on the floor; a sensor unit for acquiring biological information of the passengers sitting in the plurality of seats; and a control unit for controlling the rotation or sliding movement of the plurality of seats, the control unit inferring the body shapes of the passengers sitting in the plurality of seats based on the biological information acquired from the sensor unit, and the control unit calculating the rotation amount and sliding movement amount of the plurality of seats and the movement order of the plurality of seats based on the inferred body shape information when the plurality of seats rotate.

[0419] This allows the seat to be moved at the appropriate time.

[0420] <<Effects of the Invention>>

[0421] According to the present invention, since the seat back can be installed in a storage portion provided in any one of the mattress, the upper wall and the side wall, the seat back can be stored in the storage portion, so a vehicle can be provided that can be used with an enlarged interior space, thereby improving comfort or convenience.

[0422] Furthermore, since the mattress has a storage portion for storing the connected seat back, the seat back can be easily stored, and the internal space can be expanded for use.

[0423] Furthermore, the seat back can be stored in the storage portion by moving it rearward, thereby easily expanding the interior space.

[0424] Furthermore, by making the support surface of the seat back flush with the support surface of the mattress, the bed surface can be easily manufactured.

[0425] Furthermore, since a single mattress includes a plurality of seat backs and storage portions corresponding to the seat backs, the number of man-hours required to assemble the mattress to a vehicle and the number of parts required for the vehicle seat can be reduced.

[0426] Furthermore, by storing the seat back in the storage portion provided in the upper wall, the seat back can be easily stored, and the interior space can be expanded for use.

[0427] Furthermore, by forming the foot insertion recess on the support surface of the mattress, the occupant can insert the foot into the foot insertion recess and stretch the foot, thereby being able to sit in a normal sitting posture.

[0428] Furthermore, by providing a filling member that can be filled into the foot insertion recess, the mattress can be set in a bed state.

[0429] Furthermore, by storing the seat back in the storage portion provided in the side wall, the seat back can be easily stored, and the interior space can be expanded for use.

[0430] Furthermore, by arranging a portion of the battery storage section on the floor and positioning the upper surface of the battery storage section higher than the upper surface of the seat cushion, the battery conventionally disposed under the floor can be removed and the floor can be made low, thereby improving mobility.

[0431] Furthermore, by installing external devices in the battery storage section, the internal space can be effectively used.

[0432] Furthermore, the display device can be moved to the vicinity of the operator by the arm, so that the operator can view images and the like at the hand side of the screen.

[0433] Furthermore, biological information such as the seat in which the occupant is seated or the occupant's body shape can be used to arrange the display device at an appropriate position.

[0434] Furthermore, by providing a table that can slide on a track, for example, a table can be provided separately from the seat (cushion or seat back) where the passenger sits, and the passenger who wants to use it can move the table aside to use it. Unnecessary tables can be omitted, thereby making the vehicle lighter.

[0435] Furthermore, by making the table detachable from the rail, the table can be removed from the rail when not in use, thereby further expanding the internal space for use.

[0436] Furthermore, by providing the occupant protection device at the legs of the table, it is possible to protect the occupants sitting around the table.

[0437] Furthermore, the control unit can calculate the rotation amount and sliding movement amount of the seat and the movement order of the seat based on the body shape information of the occupant, thereby moving the seat at an appropriate timing.

[0438] <<Specific implementation method>>

[0439] Below, while referring to the attached Figure 1 The structure of the vehicle according to the embodiment of the present invention is described. However, the embodiment described below is to facilitate the understanding of the present invention and does not limit the present invention. That is, the present invention can be changed and improved without departing from its purpose, and the present invention naturally includes its equivalents.

[0440] Furthermore, in the following description, the material, shape, and size of components such as seat cushions and seat backs mounted in vehicles are merely specific examples and do not limit the present invention.

[0441] In addition, the following describes the structure of an electric vehicle that can be driven automatically as an example of a transportation tool. However, the present invention can also be applied to a manually driven engine car. Moreover, it is not limited to ground-moving transportation tools with wheels such as cars and trains, and can also be applied to airplanes or ships that move other than the ground.

[0442] In the following description, the so-called "front-rear direction" refers to the front-rear direction of the vehicle, which is the direction that coincides with the traveling direction of the vehicle when it is traveling. In addition, the so-called "width direction" and "left-right direction" refer to the lateral width direction and left-right direction of the vehicle, and the so-called "up-down direction" refers to the up-down direction of the vehicle, which is the direction that coincides with the vertical direction when the vehicle is traveling on a horizontal plane.

[0443] Moreover, in the following description, when "vehicle" is added and recorded, such as "inside the vehicle" or "outside the vehicle", it indicates the direction relative to the vehicle; when "seat" is added and recorded to various directions, such as "seat width direction" or "seat height direction", it indicates the direction relative to the vehicle seat mounted on the vehicle.

[0444] <<First embodiment>>

[0445] use Figure 36 to Figure 39 The structure of the vehicle V501 according to the first example of the third embodiment will be described. Fig.36 It is a diagram schematically showing the structure of the vehicle V501 and is a cross-sectional view of the vehicle V501 as seen from the side. Fig.37 This is a cross-sectional view of the seat back 512 in a folded and cushioned state. Fig.38 2 is a diagram showing the interior structure of the vehicle V501 as viewed from above. Fig.39 This is a diagram showing the interior structure of the vehicle V501 as viewed from the front.

[0446] like Figure 36 to Figure 39 As shown, the vehicle V501 includes a compartment 502 for the passenger H50 to enter. The compartment 502 is also called a cabin, which is equivalent to the internal space of the present invention. The compartment 502 is surrounded by a wall 503, and the wall 503 includes a floor 504, a side wall 505, and a roof 506 (upper wall).

[0447] Specifically, the side wall 505 includes a front portion 505a located in front of the vehicle V501, a tailgate 505b located in the rear, and a pillar 505c and a door 505d located on the side. The door 505d is a sliding door that can be opened and closed by sliding along the front-back direction of the vehicle V501. An openable and closable skylight 506a is provided on the roof 506 constituting the wall portion 503. The tailgate 505b constituting the side wall 505 is also provided so as to be openable and closable.

[0448] Furthermore, a front window 508a is provided at the front portion 505a as the window 508, and a rear window 508b is provided at the tailgate 505b as the window 508.

[0449] Vehicle V501 is a four-wheel electric vehicle, such as Fig.36 As shown, tires 507 are provided at the four corners of the floor panel 504, and a battery BT50 for supplying electric power to the motor and the like is provided below the floor panel 504.

[0450] In further detail, the floor 504 includes an upper floor 504a and a lower floor 504b, and an air layer 504c is provided between the upper floor 504a and the lower floor 504b. A battery support wall 532 is provided below the lower floor 504b, and the battery BT50 is arranged between the lower floor 504b and the battery support wall 532. In addition, by providing the air layer 504c in the floor 504, heat transfer from the battery BT50 is suppressed.

[0451] like Fig.36 As shown, the floor 504 of the vehicle V501 includes at least a cushion 510 supporting the lower body of the occupant H50 and a seat back 512 supporting the upper body of the occupant H50. The cushion 510 and the seat back 512 are formed by a pad P50 and a skin T50 covering the pad P50. A frame serving as a skeleton may also be provided in the seat back 512 and the cushion 510.

[0452] A part of the cushion 510 can be used as a seat cushion 511 for supporting the buttocks of the occupant H50. The seat cushion 511 and the upright seat back 512 can be used as a vehicle seat S50 on which the occupant H50 can sit.

[0453] The mattress 510 is provided with a storage portion 520 for storing the seat back 512. The storage portion 520 has a storage recess 521 formed in substantially the same size as the seat back 512, and the seat back 512 can be stored in the storage recess 521 to be in a cushion state (a bed state in which the occupant H50 can lie down).

[0454] The seat back 512 is connected to the mattress 510 by the connection part 522 and can be stored in the storage recess 521. As described above, the storage recess 521 is formed as a recess having substantially the same shape as the outer shape of the seat back 512, and is configured so that the entire seat back 512 is inserted into the storage recess 521.

[0455] In further detail, the lower end of the seat back 512 is rotatably connected to the seat cushion 511 via a connecting portion 522. The storage recess 521 for storing the seat back 512 is provided further rearward than the connecting portion 522. The seat back 512 is rotatably connected to the seat cushion 511 via a connecting portion 522. Fig.36 The direction of arrow A) rotates like Fig.37 As shown, it is stored in the storage recess 521.

[0456] The seat backs 512 of the vehicle V501 are arranged in two rows along the front-rear direction, and the front seat backs 512 and the seat cushions 511 located in front of the mattress 510 constitute the front seat SF50. Furthermore, the rear seat backs 512 and the seat cushions 511 located near the center of the mattress 510 constitute the rear seat SR50. The seat backs 512 may be arranged in one row or in more than three rows.

[0457] like Fig.38 As shown, the front seat SF50 is formed by dividing the seat back 512 on the driver's side and the seat back 512 on the passenger side, and each is independently stored in the storage recess 521 (storage portion 520). The rear seat SR50 includes a seat back 512 that is long in the width direction and is stored in the storage recess 521 provided at the rear.

[0458] The structure is such that when the seat back 512 is stored in the storage recess 521, the support surface 510a (upper surface) of the mattress 510 and the support surface 512a (passenger side surface) of the seat back 512 become flush, that is, become the same horizontal plane.

[0459] By making the support surface 510a of the mattress 510 (seat cushion 511) and the support surface 512a of the seat back 512 flush, that is, making it flat as a whole, a bed surface is created, and the passenger H50 can use the mattress 510 (seat cushion 511) and the seat back 512 as a bed. By simply folding the seat back 512 backward and storing it, the vehicle compartment 502 (interior space) can be easily expanded and used. In addition, the surface area that can be used as a bed is expanded, so the discomfort felt by the passenger can be suppressed, and the passenger H50 can easily rest or take a nap.

[0460] Furthermore, a reclining device 514 is provided at the connecting portion 522 of the seat back 512. The reclining device 514 can fix the seat back 512 in a state of being tilted at any angle relative to the mattress 510. Therefore, the head of the lying occupant H50 can also be raised. Furthermore, the reclining device 514 can adjust the rotation angle, so that Fig.36 As shown, the seat back 512 can be rotated around a rotation axis extending in the seat width direction to set the seat back 512 in an upright state (in use state).

[0461] In the use state, not all of the seat backs 512 need to be erected, and the vehicle V501 may be used with a portion of the seat backs 512 , for example, the seat back 512 of the driver's side front seat SF50 erected.

[0462] When the seat back 512 is erected, the storage recess 521 can be used as a space for inserting the feet of the passenger H50 sitting on the rear seat SR50 (foot insertion recess). Furthermore, the storage recess 521 located behind the rear seat SR50 can be used as a space for accommodating the luggage of the passenger H50 when the seat back 512 of the rear seat SR50 is erected.

[0463] and, Fig.38 The storage recess 521 shown is formed to be sized to accommodate the seat back 512, but the improvement of the mobility of the occupant sitting in the rear seat can also be considered. Fig.38 The outer side ends of the storage recess 521 are extended to the left and right ends of the mattress 510, as shown by the storage recess 521' indicated by the dotted chain line. In addition, by extending the ends of the storage recess 521 to the left and right ends of the mattress 510, the mattress 510 can be divided into the front seat cushion 511 and the rear seat cushion 511.

[0464] The mattress 510 as a bed mattress is arranged above the upper floor 504a, and Figure 36 to Figure 38 As shown, the mattress 510 is arranged from the front of the vehicle (front end of the front seat SF50) to the rear end of the floor 504. The mattress 510 is arranged above the battery BT50 on the upper floor 504a and is arranged substantially parallel to the battery BT50, so that it is easy to ensure the space of the vehicle cabin 502 where the occupant H50 passes.

[0465] Moreover, if Fig.38As shown, three seat backs 512 and storage recesses 521 corresponding to the three seat backs 512 are provided for a single mattress 510. By attaching a plurality of seat backs 512 to a single mattress 510, the number of man-hours for assembly to the vehicle V501 can be reduced compared to a case where the mattress 510 is divided into a plurality of seat cushions 511 and the seat backs 512 are provided on each seat cushion 511. In addition, the number of parts is also reduced.

[0466] Furthermore, the seat back 512 of the rear seat SR50 of the present embodiment is formed of a single member, but may be divided into left and right like the front seat SF50 to include two seat backs 512 , or may include three or more seat backs 512 .

[0467] In addition, the mattress 510 may be divided not only in the front and rear but also in the left and right. The divided mattresses 510 may be connected by a fastening member such as a zipper or a hook and loop fastener to be usable. By dividing the mattress 510, the mattress 510 is easy to put into the vehicle, thereby improving the assembly performance.

[0468] <Instrument panel 509>

[0469] like Figure 36 to Figure 38 As shown, a dashboard 509 is provided in front of the vehicle V501. On the right side of the dashboard 509, a rudder 531 for operating the vehicle V501 is installed. On the left side of the dashboard 509, an occupant support member 518 for supporting the feet of the occupant H50 is provided.

[0470] like Fig.38 As shown by the dotted line in FIG, the rudder 531 can be retractably mounted to the instrument panel 509.

[0471] Moreover, if Fig.37 As shown, the passenger support member 518 is foldably mounted on the instrument panel 509, and by unfolding the passenger support member 518 to the inside of the vehicle compartment, it can support the feet of the passenger H50 sitting on the front seat SF50 and be used as a leg support. Moreover, the passenger support member 518 can be folded and stored in the instrument panel 509 when not needed.

[0472] Furthermore, a heating component, such as a heater 525, may be provided on the surface of the passenger support member 518. The feet of the passenger H50 may be warmed by the heater 525. When the passenger support member 518 is stored in the instrument panel 509, the operation of the heater 525 may be stopped, thereby reducing power consumption.

[0473] Furthermore, a table 519 is provided on the left side of the instrument panel 509, which can be folded and stored above the passenger support member 518. The passenger H50 can use the table 519 by unfolding as needed.

[0474] In addition, the passenger support member 518 may be provided not only on the passenger seat side of the instrument panel 509 but also on the driver's seat side. The passenger support member 518 may be provided, for example, so as to be retractable below the rudder 531, and the passenger support member 518 may be brought in and out as needed. Furthermore, a heater 525 may be provided on the surface of the passenger support member 518 on the driver's side as a heating member.

[0475] Another example of the instrument panel 509 is shown in Fig.40 A foldable table 519 provided on the instrument panel 509 may be provided near the center, and an occupant protection device 528 , such as an airbag for the front passenger seat, may be provided on the left side of the instrument panel 509 .

[0476] <Vehicle V501A>

[0477] Reference Fig.41 and Fig.42 A vehicle V501A is described as another example of the vehicle V501 of the first embodiment. Fig.41 The vehicle shown is V501A with Figure 36 to Figure 39 The vehicle V501 shown differs in that it includes a headrest 513 disposed on the roof 506. Figure 36 to Figure 39 The same reference numerals are used for the same or equivalent components of the structure of the vehicle V501 shown, and their description is omitted.

[0478] The headrest 513 of the vehicle V501A is rotatably mounted on the lower surface of the roof 506. The seat back 512 is in an upright position, as shown in FIG. Fig.41 As shown by the solid line of , it is rotated and fixed in a downward hanging position, so that the head of the occupant H50 can be supported. By providing the headrest 513, the burden on the head can be reduced.

[0479] When the seat back 512 is stored in the storage recess 521 of the mattress 510 and becomes a cushion state, that is, when the bed surface is formed, as shown in FIG. Fig.41 As shown by the dotted chain line, the headrest 513 is rotated upward and stored in a storage portion provided on the lower surface of the roof 506. Since the protrusion amount of the headrest 513 is reduced, the vehicle compartment 502 can be expanded for use.

[0480] Moreover, if Fig.42 As shown, the headrest 513 may be provided with a through hole 513a which is provided so as to penetrate in the front-rear direction when the headrest 513 is unfolded downward. By forming the through hole 513a in the headrest 513, when the driver checks the rear, the rear of the vehicle V501A can be easily seen. Furthermore, by forming the through hole 513a, the headrest 513 can be made lighter.

[0481] Moreover, it is also possible to Fig.42As shown, a notification device 526 is provided at the shoulder of the seat back 512 or on the left and right of the headrest 513. The notification device 526 includes a speaker, a vibrator, a light emitting device (display device) or a combination thereof. By providing the notification device 526 at a position close to the head of the seated passenger, information can be effectively conveyed to the passenger.

[0482] <Vehicle V501B>

[0483] use Fig.43 and Fig.44 The following describes another example of the vehicle V501 of the first embodiment, namely, a vehicle V501B. Compared with the vehicle V501, the vehicle V501B as another example is different in that a support surface adjustment device 527 is provided on the seat cushion 511 and the seat back 512 of the mattress 510. Figure 36 to Figure 39 The same reference numerals are used for the same or equivalent components of the structure of the vehicle V501 shown, and their description is omitted.

[0484] The support surface adjustment device 527 is a device for adjusting the shape of the support surfaces 510a and 512a supporting the occupant H50. In this embodiment, it includes a plurality of air chambers arranged vertically and horizontally. By changing the size of each air chamber, the shape of the support surfaces 510a and 512a can be changed. When the occupant H50 sits on the vehicle seat S50, or when the occupant H50 lies on the vehicle seat S50 in a cushioned state, the support surface adjustment device 527 can be used to deform the support surfaces 510a and 512a to match the posture of the occupant H50, thereby appropriately supporting the occupant H50. In addition, the support surface adjustment device 527 can also be used as a massage device for kneading the body of the occupant H50.

[0485] The air chambers may be arranged to overlap along the thickness direction of the seat cushion 511 and the seat back 512. By being arranged in two stages, the displacement in the thickness direction may be greater, thereby enabling stronger pressure to be applied when kneading the body of the occupant H50.

[0486] In addition, in this embodiment, an air chamber is used as the support surface adjustment device 527, but this is just an example, and the support surface adjustment device 527 may also include a mechanical device such as a roller.

[0487] Moreover, Fig.43 As shown, side airbags 528a are provided on both left and right sides of the seat back 512 as occupant protection devices 528. In addition, a belt lead-out portion 528b (belt guide portion) for leading out the seat belt may be provided on the upper end of the seat back 512 as the occupant protection device 528. When the seat back 512 is stored in the storage recess 521, the side airbags 528a and the belt lead-out portion 528b are also stored in the storage recess 521.

[0488] <Vehicle V501C>

[0489] use Figure 45 to Figure 47 The following describes another example of the vehicle V501, which is a vehicle V501C. The difference between the vehicle V501 and the vehicle V501C is that the capacity of the battery BT50 mounted under the floor is larger. Figure 36 to Figure 39 The same reference numerals are used for the same or equivalent components of the structure of the vehicle V501 shown, and their description is omitted.

[0490] like Fig.45 As shown, the vehicle V501C is provided with a second battery BT502 on top of the first battery BT501. Therefore, a battery recess 504d for accommodating the second battery BT502 is formed on the upper floor 504Aa and the lower floor 504Ab of the floor 504A. In other words, a convex portion protruding to the vehicle compartment side is formed on the upper floor 504Aa. In this embodiment, a concave floor avoidance portion 510Ab is formed on the bottom surface of the mattress 510A to accommodate the convex portion of the upper floor 504Aa protruding to the vehicle compartment side, thereby suppressing the enlargement of the mattress 510A in the height direction as a vehicle seat S50. In other words, the height of the support surface 510Aa of the mattress 510A (seat cushion 511A) supporting the lower body of the occupant H50 is suppressed from becoming higher. As a result, the storage space for the batteries BT501 and BT502 can be expanded.

[0491] In the case of expanding the storage space of the batteries BT501 and BT502, Fig.47 As shown, ventilation holes 534 for ventilating the storage space may be formed on the side of the lower floor 504Ab.

[0492] Furthermore, since the upper surface of the upper floor 504Aa is raised, Fig.45 As shown in FIG. 1 , a back support member 512b is used to support the lower end of the seat back 512. By using the back support member 512b, the support rigidity of the seat back 512 is improved. In this case, the back support member 512b may be arranged on both sides of the seat back 512 for support. Fig.46 As shown, the back support member 512b supports only the outer side of the seat back 512. At this time, only the left and right ends of the cushion 510A are supported, and the high-hardness member disposed in the cushion 510A disappears, thereby suppressing the discomfort felt by the occupant H50 when lying on the cushioned vehicle seat S50.

[0493] Moreover, it is also possible to Fig.45As shown, a mechanism for lifting the seat cushion 511A supporting the lower body (mainly the thighs) of the occupant H50 upward is provided in front of the vehicle seat S50A. In this embodiment, a connecting portion is provided to connect the rear end of the seat cushion 511A and the mattress 510A, similarly to the seat back 512, so that the seat cushion 511A rotates upward around the rotation axis of the connecting portion. A storage recess 521A for storing the seat cushion 511A is formed in the mattress 510A.

[0494] By lifting the seat cushion 511A from the mattress 510A, the occupant H50 can sit in a more natural posture.

[0495] Fig.45 In the illustrated vehicle V501C, a seat cushion 511A raised upward from a cushion 510A is provided on the front seat SF50 side, but a seat cushion 511A raised upward from the cushion 510A may also be provided on the rear seat SR50 side.

[0496] Furthermore, it is also possible to configure the seat cushion 511A supporting the lower body of the occupant H50 and the armrest (not shown) supporting the arm of the occupant H50 to be stowed in the cushion 510A or the seat back 512 and moved upward as needed. By switching between the stowed state and the use state, the convenience of the vehicle seat is improved.

[0497] When the seat cushion 511A or the armrest is stored in the storage recess 521, the seat cushion 511A or the armrest can be formed so that the upper surface of the mattress 510A becomes flush with the upper surface (support surface) of the seat cushion 511A and the upper surface (support surface) of the armrest, similar to the seat back 512.

[0498] Moreover, the storage recess 521 for storing the seat back 512 may also be as shown in FIG. Fig.46 The storage recess 521' is formed to extend to the left and right sides of the mattress 510A as shown by the dotted line. The opening formed in the side of the mattress 510A makes it easy for the feet of the occupant H50 to enter the storage recess 521'.

[0499] <<Second embodiment>>

[0500] use Figures 48 to 50 A vehicle V502 as a second example of the present embodiment will be described. Fig.48 2 is a diagram schematically showing the structure of a vehicle V502 according to the second embodiment, and is a cross-sectional view viewed from the side. Fig.49 It is along Fig.48 The cross-sectional view of the B1-B1 line, Fig.50 It is along Fig.48 Cross-sectional view of line B2-B2.

[0501] The vehicle V502 as the second embodiment is different from the vehicle V501 of the first embodiment in that the seat back 512B is configured to be retractable into a retractable portion 520B provided on the roof 506. The same reference numerals are used for components provided in the vehicle V502 of the second embodiment that are identical or equivalent to those of the vehicle V501 of the first embodiment, and description thereof is omitted.

[0502] Vehicle V502 is a four-wheel electric vehicle, such as Figures 48 to 50 As shown, the vehicle includes a cabin 502 (interior space) for the passenger H50 to enter. The cabin 502 is surrounded by a wall 503. The wall 503 includes a floor 504, a side wall 505, and a roof 506. Below the floor 504, a battery BT50 for supplying power to the motor and the like is included.

[0503] like Fig.48 As shown, at least a mattress 510B for supporting the lower body of the occupant H50 is arranged on the floor 504 of the vehicle V502. In addition, a seat back 512B for supporting the upper body of the occupant H50 is storably mounted to a storage portion 520B of the roof 506.

[0504] To describe in more detail, a storage recess 521B having substantially the same size as the seat back 512B is formed in the storage portion 520B, and the seat back 512B is mounted so as to be stored in the storage recess 521B.

[0505] The seat back 512B is rotatably arranged relative to the storage portion 520B, and as shown in FIG. Fig.48 As shown by the solid line, it hangs down from the roof 506 and becomes usable when the lower end of the seat back 512B abuts against the upper surface (support surface 510Ba) of the mattress 510B.

[0506] The seat back 512B is provided with a reclining device 514 that adjusts the rotation angle with respect to the roof 506, and is fixed in a state of being tilted at an arbitrary rotation angle.

[0507] By moving the lower end of the seat back 512B in the usable state to a position in contact with the upper surface (support surface 510Ba) of the cushion 510B, the continuity between the seat back 512B and the seat cushion 511B of the cushion 510B is ensured, thereby improving the sitting comfort.

[0508] When the vehicle V502 is parked or in the automatic driving mode, the seat back 512B is lifted up to the roof 506 and stored in the storage section 520B, so that the mattress 510B can be set to a bed state. That is, by storing the seat back 512B in the storage section 520B, the portion of the front seat SF50 and the rear seat SR50 that is used as a seat cushion can be used as a bed pad. As a whole, the flat area is expanded, so it is easy to rest or take a nap. In addition, since the seat back 512B is provided on the roof 506, it is not necessary to provide a storage recess in the mattress 510B on the floor 504. Therefore, the cracks or steps of the mattress 510B are reduced, so the discomfort of the occupant H50 when lying on the mattress 510B can be suppressed.

[0509] Furthermore, the thickness T1 of the seat back 512B can be set to be less than the depth T2 of the storage recess 521B. When the seat back 512B is stored in the storage recess 521B of the roof 506, the seat back 512B does not protrude from the storage recess 521B, thereby improving the appearance.

[0510] Furthermore, the seat back 512B lifted toward the roof 506 can also be fixed by a locking device 522b provided at the front end portion of the seat back 512B in the storage portion 520B.

[0511] Moreover, in the seat back 512B, it is also possible to Fig.50 As shown, a through hole 512Bc is formed in the portion supporting the head of the occupant H50, which penetrates in the front-to-back direction. By forming the through hole 512Bc which penetrates in the front-to-back direction, the driver can see the rear, and thus can confirm the rear of the vehicle V502 through the through hole 512Bc. In addition, by forming the through hole 512Bc, the seat back 512B can be made lighter.

[0512] The position where the through hole 512Bc is formed is not limited thereto, and may be formed at a position that can support the back or abdomen of the occupant H50. That is, the through hole 512Bc may be formed in the center portion or the lower portion of the seat back 512B.

[0513] The notification device 526 may be provided on the left and right of the part supporting the head of the occupant H50 when the seat is in use. The notification device 526 is a device including a speaker, a vibrator, a light emitting device (display device), or a combination thereof. By arranging the notification device 526 near the part where the head of the seated occupant H50 is located, information can be transmitted more reliably.

[0514] Furthermore, in order to improve the mobility of the occupant H50 who sits on the rear seat SR50 , a leg insertion recess 523 for inserting the legs of the occupant H50 may be formed.

[0515] In the case where the foot insertion recess 523 is formed, when the seat back 512B is lifted up and stored in the storage portion 520B, a step difference including the recess can be formed, and therefore a filling member 524 can be provided to fill the foot insertion recess 523. The filling member 524 is, for example, a cushioning member of the same size as the foot insertion recess 523, and by inserting the filling member 524 into the foot insertion recess 523, the mattress 510B can be set to a cushioned state, that is, a flat state as a whole. When the seat back 512B is lowered from the roof 506 and set to a use state, the filling member 524 can also be removed from the foot insertion recess 523 and used as shown in the figure. Fig.48 As shown, the filling member 524 is arranged behind the rear seat SR50.

[0516] The foot insertion recess 523 may also be as Fig.49 The leg insertion recess 523' shown by the middle dotted line extends to the left and right sides of the cushion 510B to improve the ingress and egress of the occupant of the rear seat SR50. The left and right sides of the cushion 510B have openings for inserting the feet when getting in and out of the vehicle, thereby improving the ingress and egress.

[0517] in addition, Fig.49 Although two foot insertion recesses 523 are formed in the foot insertion recess, a single foot insertion recess 523 may be formed so as to connect them. In this case, the mattress 510B is divided into a front seat cushion and a rear seat cushion. In this case, the foot insertion recess 523 may be filled with a single filling member 524 or a plurality of divided filling members 524.

[0518] The hardness of the filling member 524 may also be set to be the same as the hardness of the mattress 510B. By setting the same hardness, a bed surface that is less uncomfortable for the occupant H50 when set to a cushion state can be provided. In addition, the hardness of the filling member 524 may be set to be different from the hardness of the mattress 510B. For example, by making the hardness of the filling member 524 lower than the hardness of the mattress 510B, when the occupant H50 lies on the mattress 510B, the part that the waist or buttocks of the occupant H50 abuts can be made softer than other parts, thereby improving the feeling of contact. In addition, by making the hardness of the filling member 524 higher than the hardness of the mattress 510B, the waist or buttocks of the occupant H50 can be stably supported.

[0519] The mattress 510B disposed on the floor 504 has a foot insertion recess 523 for inserting feet. However, in order to utilize the mattress 510B as a bed, a plurality of recesses may be formed so as to accommodate filling members 524 of different hardness.

[0520] For example, Fig.51 and Fig.52 As shown, a plurality of hardness adjustment recesses (first recess 523a to eighth recess 523h) are formed and arranged in parallel along the front-back direction or the width direction. By accommodating filling members 524 of different hardness, such as high hardness, medium hardness, and low hardness, in the hardness adjustment recesses, a mattress 510B' having a hardness distribution corresponding to the preference of the occupant H50 can be provided.

[0521] For example, when sitting, the filling member 524 with high hardness can be stored to prevent the posture from being distorted. At this time, the hardness can also be adjusted according to the preferences of the occupants sitting in the driver's seat, the front passenger seat, the rear seat, etc. Moreover, when used as a bed, by storing the filling member 524 with low hardness, the support surface 510Ba of the mattress 510B' is set to a hardness suitable for sleeping.

[0522] <Vehicle V502B>

[0523] use Fig.53 Next, another example of vehicle V502 of the second embodiment is described, namely, vehicle V502B. As another example, vehicle V502B is different from vehicle V502 in the length of seat back 512B or the equipment carried. The same reference numerals are given to components that are the same as or equivalent to components of vehicle V501 or vehicle V502 of the first embodiment, and description thereof is omitted.

[0524] like Fig.53 As shown, vehicle V502B includes a mattress 510B disposed on a floor 504 and a seat back 512B' mounted on a roof 506. The seat back 512B' is mounted to a storage recess 521B' of a storage portion 520B' provided on the roof 506 so as to be storable.

[0525] like Fig.53 As shown, the lower end of the seat back 512B' is configured to be located higher than the upper surface (support surface 510Ba) of the mattress 510B when in use. Therefore, a gap 535 is formed between the lower end of the seat back 512B' and the upper surface of the mattress 510B. The size of the gap 535 can be larger than the thickness J1 of the seat back 512B'. By shortening the length L of the seat back 512B', the seat back 512B' can be made lighter. Therefore, it becomes easy to move the seat back 512B' up and down. In addition, the support surface 512Ba that supports the waist or buttocks of the occupant H50 is reduced, thereby suppressing the discomfort of the occupant H50.

[0526] In order to reduce the weight of the seat back 512B, a through hole or a partially thinned recess may be formed in the seat back 512B. The through hole or the thinned recess may be formed by removing the padding at the position where the discomfort occurs.

[0527] Moreover, it is also possible to Fig.53 As shown, the seat back 512B' is provided not only on the roof 506 but also on the tailgate 505b. The tailgate 505b is provided with a storage portion 520C, and the seat back 512 is installed in a storage recess 521C formed in the storage portion 520C. A rotation axis is provided at the upper end of the seat back 512B', and when used as a vehicle seat S50, the seat back 512B' can be rotated toward the front of the vehicle and tilted to support the upper body of the occupant.

[0528] You can also Fig.53 As shown, a side airbag 528a or a belt lead-out portion 528b (seat belt) is provided on the seat back 512B' as an occupant protection device 528. An airbag device 528c may also be provided in the mattress 510B.

[0529] The frame 529 may be provided inside the mattress 510B and the seat back 512B'. The frame 529 may be made of resin for lightness. By providing the frame 529, the support rigidity of the mattress 510B and the seat back 512B' with respect to the occupant H50 is improved.

[0530] Although not shown, a support surface adjustment device for adjusting the support surfaces 512Ba and 510Ba may be provided on the seat back 512B' and the mattress 510B. The support surface adjustment device may include an air chamber, for example. By changing the support surfaces 512Ba and 510Ba, for example, the body of the occupant H50 can be kneaded.

[0531] In order to improve the sitting comfort of passengers sitting in the second row middle seat SM50 and the third row rear seat SR50, a foot insertion recess may be formed in the cushion 510B. In order to improve the sitting comfort, the foot insertion recess may extend to the left and right sides of the cushion 510B to form an opening.

[0532] <<Third embodiment>>

[0533] use Figure 54 to Figure 56 A vehicle V503 as a third example of the present embodiment will be described. Fig.54 It is a diagram schematically showing the structure of a vehicle V503 according to the third embodiment, and is a cross-sectional view as seen from the side. Fig.55 It is along Fig.54 , and is a cross-sectional view taken along line C1-C1 of the vehicle V503 as viewed from the front. Fig.56 It is along Fig.54 , and is a cross-sectional view along the C2-C2 line, and is a view of the vehicle V503 as viewed from above.

[0534] The vehicle V503 as the third embodiment is different from the vehicle V501 of the first embodiment in that the seat back 512C is arranged to be stored in the storage portion 520C provided in the pillar 505c of the vehicle V503. The same reference numerals are given to the components provided in the vehicle V503 of the third embodiment that are the same or equivalent to those of the vehicle V501 of the first embodiment, and their detailed description is omitted.

[0535] Vehicle V503 is also a four-wheel electric vehicle like vehicle V501. Figure 54 to Figure 56 As shown, the vehicle includes a cabin 502 (interior space) for the passenger H50 to enter. The cabin 502 is surrounded by a wall 503, and the wall 503 includes a floor 504, side walls 505, and a roof 506. Under the floor 504, a battery BT50 for supplying power to the motor and the like is included.

[0536] like Fig.54 As shown, the floor 504 of the vehicle V503 includes at least a mattress 510C for supporting the lower body of the occupant H50. In addition, a seat back 512C for supporting the upper body of the occupant H50 is storably mounted to a storage portion 520C provided on a column 505c as a side wall. The seat back 512C is rotatably provided relative to the storage portion 520C provided on the column 505c. When the seat back 512C is used, the seat back 512C is rotated and pulled out from the storage portion 520C, so that the seat back 512C can be used as shown in FIG. Fig.55 As shown by the solid line in the middle, it is set to be in a state of protruding toward the inside of the vehicle compartment.

[0537] A storage recess 521C for storing the seat back 512C is formed in the storage portion 520C provided in the column 505c. The thickness T3 of the seat back 512C can be set to be less than the depth T4 of the storage recess 521C so that the seat back 512C does not protrude from the storage recess 521C when the seat back 512C is stored in the storage recess 521C.

[0538] Furthermore, in addition to the seat back 512C, the seat cushions, armrests, headrests, leg rests, etc. can also be stored in the side walls and pulled out to the inside of the vehicle when in use.

[0539] By storing the seat back 512C in the storage portion 520C provided in the side wall 505 such as the pillar 515a, the space in the vehicle is expanded, so the passenger H50 can use the mattress 510C arranged on the floor 504 as a bed. Since the flattened portion is expanded, the passenger H50 can lie down and easily rest or take a nap.

[0540] <<Fourth embodiment>>

[0541] use Figures 57 to 60A vehicle V504 as a fourth example of the present embodiment will be described. Fig.57 1 is a diagram schematically showing a structure of a vehicle V504 according to a fourth embodiment, and is a cross-sectional view of the vehicle V504 as viewed from the side. Fig.58 This is a diagram showing a state where seats are arranged so that people can sit face to face. Fig.58 and Fig.59 This is a diagram showing another example of the seat layout.

[0542] The vehicle V504 of the fourth embodiment is different from the vehicle V502 of the second embodiment in that the mattress 510D disposed on the floor 504 is divided and configured to be rotatable and slidable. In the following description, the same reference numerals are attached to the components that are the same or equivalent to those of the vehicle V502 of the second embodiment, and their detailed description is omitted.

[0543] Vehicle V504 is a four-wheel electric vehicle, such as Figures 57 to 60 As shown, the vehicle includes a cabin 502 (interior space) for the passenger H50 to enter. The cabin 502 is surrounded by a wall 503. The wall 503 includes a floor 504, a side wall 505, and a roof 506. Under the floor 504, a battery BT50 for supplying power to the motor and the like is included.

[0544] The roof 506 is provided so as to be movable in the up-down, left-right, and front-back directions. As the roof 506 moves, the storage portion 520D for storing the seat back 512D also moves together. As the storage portion 520D moves, the position of the seat back 512D can be moved in the up-down, left-right, and front-back directions. Furthermore, the roof 506 may be provided with an openable and closable skylight 506a or the like, so that when the seat back 512D is lowered and set to a use state, the seated passenger H50 can see the sky.

[0545] The vehicle V504 includes a plurality of seat backs 512D for supporting the upper body of the occupant H50. The seat backs 512D are storable and mounted in a storage portion 520D provided on the roof 506. In the storage portion 520D, there is formed a storage recess 521D having a size substantially the same as the outer shape of the seat back 512D. In the stowed state (storage state), the seat back 512D is embedded in the storage recess 521D. The seat back 512D is rotatably arranged relative to the storage portion 520D, as shown in FIG. Fig.57 As shown in the solid line, it becomes usable by hanging from the roof 506.

[0546] In the stowed state, the seat back 512D is connected to the stowage portion 520D at the front end or the rear end by a connection portion 522. A rotation axis 522a extending in the seat width direction is provided in the connection portion 522. In addition, the seat back 512D is provided with a reclining device 514 for adjusting the rotation angle relative to the roof 506, and is fixed in a state of being tilted at an arbitrary rotation angle.

[0547] A cushion 510D that can support at least the lower body of the occupant H50 is disposed on the floor 504. A plurality of cushions 510D are provided, and two cushions 510D are disposed on the front side and two cushions 510D are disposed on the rear side in the vehicle compartment 502. The cushion 510D functions as a seat cushion 511D that supports the buttocks of the occupant H50.

[0548] Each mattress 510D is provided with a seat rotating device 516 for rotating the mattress 510D around a rotating shaft extending in the vertical direction, and a rail device 517 for moving the mattress 510D in the front-rear direction of the vehicle V504. The rail device 517 includes an upper rail 517a provided on the mattress side and a lower rail 517b arranged on the floor, and the mattress 510D moves in the front-rear direction by the upper rail 517a sliding along the lower rail 517b.

[0549] The mattress 510D may be further provided with a height adjusting device 515 for changing the height of the supporting surface 510Da.

[0550] When the passenger H50 uses the cushion 510D for sitting, the seat back 512D in the stowed state is pulled out from the roof 506 and fixed at a predetermined angle, and then the cushion 510D is moved to an appropriate position. At this time, the rotation angle of the seat back 512D can be automatically or manually adjusted based on the position of the cushion 510D.

[0551] On the other hand, when taking a rest or a nap, the occupant H50 lifts up the seat back 512D and stores it in the storage portion 520D of the roof 506, and brings the plurality of mattresses 510D closer together to create a bed surface.

[0552] Moreover, it is also possible to Fig.58 As shown, the rotation axis 522a of the seat back 512D of the front seat SF50 is switched to the rotation axis 522a located in the front, so that the occupant H50 can sit facing rearward.

[0553] Furthermore, the height of the rear cushion 510D may be changed by the height adjustment device 515 in accordance with the size of the seated occupant H50 so as to achieve a sitting posture suitable for the occupant H50.

[0554] Moreover, it is also possible to Fig.59As shown, after the positions of the seat back 512D and the cushion 510D are adjusted, the occupant support member 518 provided on the instrument panel 509 is pushed out as needed to support the feet of the occupant H50 sitting on the front seat SF50.

[0555] Moreover, it is also possible to Fig.59 As shown, the rotation axis 522a (connecting portion 522) of the seat back 512D of the rear seat SR50 is switched so that the cushion 510D is located at the rearmost end of the vehicle interior 502. At this time, the tailgate 505b may also be opened.

[0556] An extension portion 512d that can adjust the length of the seat back 512D may be provided to support the upper body of the occupant H50 at a greater tilt angle.

[0557] Moreover, it is also possible to Fig.60 As shown, the display device 536 is detachably mounted on the support surface 512Da of the seat back 512D. In order to see the mounted display device 536, the passenger support member 518 and the table 519 provided on the instrument panel 509 may be pulled out to support the upper body of the passenger H50. Furthermore, the cushion 510D of the rear seat SR50 may be moved forward to support the feet of the passenger H50, so that the passenger H50 can enjoy the image of the display device 536 in a relaxed posture.

[0558] <Vehicle V504A>

[0559] use Figure 61 to Figure 66 A vehicle V504A which is a modified example of the vehicle V504 of the fourth embodiment will be described. Fig.61 1 is a diagram showing a vehicle V504A as a modified example, and is a cross-sectional view showing the structure of the vehicle V504A including three rows of seats. Fig.62 It is along Fig.61 Cross-sectional view of line D1-D1. Fig.63 This is a cross-sectional view of a state in which the seat back 512D is stored and the mattress 510D is brought close to form a cushion. Fig.64 It is along Fig.63 Cross-sectional view of line D2-D2. Fig.64 is a diagram showing another example of a vehicle V504A, and is a cross-sectional view showing the structure of the vehicle as viewed from the side. Fig.65 and Fig.66 This is a diagram showing another example of the seat layout.

[0560] The vehicle seat S50 provided in the vehicle V504 includes two rows of cushions 510D and a seat back 512D. However, the vehicle seat S50 may also be Figure 61 to Figure 64The vehicle V504A shown in the figure includes three rows of cushions 510D and seat backs 512D. In this case, the seat backs 512E of the third row are installed in the storage section 520E provided in the tailgate 505b. The lower end of the seat back 512E is configured to support the upper body of the occupant H50 by being pushed forward from the tailgate 505b. Figures 57 to 60 The same or equivalent components of the structure of the vehicle V504 shown are denoted by the same reference numerals, and their description is omitted.

[0561] Each cushion 510D is provided with a seat rotation device 516 and a rail device 517, similarly to the vehicle V504. The cushion 510D located in the front becomes a seat cushion 511D, and the front seat back 512D provided in the storage portion 520D of the roof 506 is lowered to form a front seat SF50. The cushion 510D in the second row becomes a seat cushion 511D by lowering the rear seat back 512D provided in the storage portion 520D of the roof 506, thereby forming a middle seat SM50. The cushion 510D in the third row becomes a seat cushion 511D by pushing out the seat back 512E of the tailgate 505b, thereby forming a rear seat SR50.

[0562] Each seat back 512D may be provided with an extension portion 512d extending the length thereof, similarly to the seat back 512D of the vehicle V504. By changing the length of the seat back 512D according to the position of the cushion 510D serving as the seat cushion 511D, the upper body of the occupant H50 can be supported at an appropriate tilt angle.

[0563] like Fig.63 and Fig.64 As shown, the seat back 512D of the vehicle V504A is stored in the storage portion 520D of the roof 506, and the front-to-back positions of the mattresses 510D arranged on the floor 504 are adjusted so that the mattresses 510D are arranged in contact with or close to each other, thereby forming a continuous bed surface. By setting up three rows of seats, a larger bed surface can be formed compared to the case of two rows of seats. When forming a continuous bed surface, the passenger support member 518 provided on the instrument panel 509 can also be pulled out to support the feet of the passenger H50 lying on the bed surface.

[0564] use Figure 65 to Figure 67 A vehicle V504A' will be described as another example of the vehicle V504A.

[0565] You can also Fig.65As shown, movable end support members 537 are provided at the left and right ends of each cushion 510D. When the cushion 510D is used as a vehicle seat S50 for the occupant H50 to sit on, the end support members 537 are rotated so as to be located upward, thereby making it possible to use the end support members 537 as side supports for supporting the lower body of the occupant H50 in the seat width direction.

[0566] On the other hand, in order to further enlarge the carriage 502 for use, the mattress 510D is set to a cushion state. Fig.65 As shown, the mattress 510D is rotated 90 degrees so that the end support member 537 is located in the front-to-back direction, and then the end of the end support member 537 is rotated so that it is located below. In this state, by adjusting the position of the mattress 510D in the front-to-back direction, the mattresses 510D are arranged in contact or close to each other, thereby forming a bed surface with a larger area.

[0567] At this time, you can Fig.66 As shown in FIG. 5 , the end support member 537 located at the end of the bed surface is rotated to be set as a pillow to support the head of the lying occupant H50. Fig.67 As shown in FIG. 5 , the pillow is detached from the mattress 510D to support the head of the occupant H50. In addition, the occupant support member 518 can be pulled out to support the feet. By using the end support member 537 to support the head of the occupant H50, Fig.66 As shown, the image displayed on the display device 536 of the seat back 512D can be viewed at an appropriate angle.

[0568] <Fifth embodiment>

[0569] use FIG. 68A to FIG. 69 A vehicle seat S505 mounted in a vehicle V505 as a fifth example of the present embodiment will be described.

[0570] In the past, the vehicle seat installed in the vehicle was used not only for the passenger H50 to sit, but also as a place to carry the luggage of the passenger H50. However, there is no component in front of the vehicle seat to suppress the movement of the luggage, so the luggage may sometimes fall from the vehicle seat. Therefore, in the vehicle seat disclosed in International Publication No. 2022 / 092314, a luggage storage space is formed by configuring the leg support to rotate to an upper position higher than the horizontal position, thereby suppressing the falling of the luggage. However, if the leg support is simply moved to a position higher than the horizontal position, the holding force of the luggage may sometimes be insufficient.

[0571] The vehicle seat S505 installed in the vehicle V505 of the fifth example of the present embodiment includes a seat cushion 511F for supporting the lower body of the passenger H50 and a seat back 512F for supporting the upper body. The lower end of the seat back 512F is rotatably connected to the rear end of the seat cushion 511F. In addition, armrests 538 for supporting arms are provided on the left and right sides of the seat back 512F. A leg support 530 for supporting the feet of the passenger H50 is rotatably provided at the front end of the seat cushion 511F. In addition, the seat cushion 511F can also be used as a mattress 510F. The seat cushion 511F and the seat back 512F include a pad P50 and a surface T50 covering the pad P50. A headrest 513F is provided at the upper end of the seat back 512F. A height adjustment device 515, a seat rotation device 516, and a rail device 517 are provided below the seat cushion 511F, so that the direction of the vehicle seat S505 or the position and height in the vehicle cabin can be changed.

[0572] The vehicle seat S505 is configured such that when luggage is loaded, the leg support 530 is moved to a position higher than the upper surface of the seat cushion 511F, and the upper end 530a of the leg support 530 is located higher than the lower end 538b of the armrest 538 in the use state. By providing the leg support 530 in this way, the holding force of the luggage is improved. Furthermore, the vehicle seat S505 may be configured such that the upper end 530a of the leg support 530 is located higher than the upper end 538a of the armrest 538.

[0573] Moreover, it is also possible to Fig.68B As in the illustrated vehicle seat S505 , when the leg rest 530 is moved above the upper surface of the seat cushion 511F, the leg rest 530 is in direct contact with and connected to the armrest 538 in the used state.

[0574] In addition, the leg support 530 may be connected to any one of the left and right armrests 538. Furthermore, the leg support 530 may be connected to both the left and right armrests 538.

[0575] You can also Fig.68C As in the illustrated vehicle seat S505 a , the leg rest 530 moved upward is connected to or in contact with the armrest 538 via a movable member 539 .

[0576] The movable member 539 may be a supporting member or an auxiliary armrest provided at the front end of the armrest 538 . Fig.68C In the example shown, the support member or auxiliary handrail extends along the direction of the handrail 538. Fig.68C The armrest 538 is installed to be slidable in the direction of arrow F. A support member or an auxiliary armrest may also be provided at the front end of the armrest 538 to be rotatable.

[0577] Moreover, it is also possible to Fig.68D As in the vehicle seat S505 b shown in the figure, the movable member 539 connecting the leg rest 530 and the armrest 538 is a supporting member or an auxiliary leg rest provided on the leg rest 530 .

[0578] The support member or the auxiliary leg support provided on the leg support 530 may be provided rotatably and movably at the front end of the leg support 530. Furthermore, the support member or the auxiliary leg support may be provided on the leg support 530 so as to be slidably and movably.

[0579] You can also Fig.68E As shown in the vehicle seat S505c, the armrest 538 in use and the leg support 530 moved upward are connected or in contact via a connecting member 540 (connecting member). The connecting member 540 may be, for example, a rope or a linear member 541 made of rubber or the like.

[0580] Furthermore, the connecting member 540 may also be Fig.68F The vehicle seat S505d shown includes a mesh member 542 .

[0581] Furthermore, the connecting member 540 may also be Figure 68G The vehicle seat S505f shown is a planar member 543 made of cloth or leather. The connecting member 540 is fixed to the front end of the leg support 530 and the front end of the armrest 538 by a mounting member 544 such as a clip or hook and loop. The leg support 530 and the armrest 538 can be connected by a simple structure.

[0582] The connecting member 540 may be configured to connect not only the leg support 530 and the armrest 538, but also the armrest 538 to the seat cushion 511F or the seat back 512F. Furthermore, the connecting member 540 may be configured to connect the leg support 530 to the seat cushion 511F or the seat back 512F.

[0583] For example, you can also Figure 68H As shown in the vehicle seat S505g, the connecting member 540 connects or links the leg support 530, the armrest 538, the seat cushion 511F and the seat back 512F. At this time, it is desirable that the connecting member 540 includes a mesh member 542 or a planar member 543 such as cloth. The connecting member 540 is fixed to the side of the seat cushion 511F and the seat back 512F by a mounting member 544 such as a clip. By providing the connecting member 540 in this way, the holding force of the luggage and the like is further improved.

[0584] You can also Figure 68IAs shown in the vehicle seat S505g, a plurality of connecting members 540 cover the side of the vehicle seat S505g. The front end of the leg support 530 and the armrest 538 are connected by a linear member 541 as the connecting member 540. In addition, the side opening surrounded by the seat back 512F, the armrest 538, the seat cushion 511F and the leg support 530 is formed in a manner covered by a planar member 543 or a mesh member 542.

[0585] Moreover, it is also possible to Figure 68J As shown in the vehicle seat S505h, a mesh member 542 is used as a connecting member 540 to connect the armrests 538 located on the left and right. The connecting member 540 may also be a planar member 543. In this case, the front end of the armrest 538 and the leg support 530 can be connected or connected by a linear member 541. If a mesh member 542 or a planar member 543 is used as the connecting member 540, the holding force can be increased with a larger area. Moreover, the linear member 541 and the planar member 543 may also be formed integrally.

[0586] Moreover, Fig.69 As in the vehicle V505A shown in the figure, the instrument panel 509 and the seat back 512D and the seat cushion 511D of the front seat SF50 are connected or coupled by a mesh member 542. A planar member 543 may be used instead of the mesh member 542. The connecting member 540 functions as a luggage holding member 546 for holding the luggage 545, thereby preventing the luggage 545 from falling from the side of the front seat SF50, and improving the holding force of the luggage 545.

[0587] The connecting member 540 such as the mesh member 542 may be stored in the instrument panel 509 and may be pulled out from the instrument panel 509 for use.

[0588] <Sixth embodiment>

[0589] use Figure 70 to Figure 73 A vehicle V506 as a sixth example of the present embodiment will be described. Fig.70 It is a diagram schematically showing the structure of a vehicle V506 according to the sixth embodiment, and is a diagram of the vehicle V506 as seen from the side. Fig.71 It is along Fig.70 1 is a cross-sectional view taken along line E1-E1 of the vehicle V506 and is a view of the vehicle V506 as viewed from above. Fig.72 FIG. 4 is a diagram showing another example of a seat layout, and is a diagram of a vehicle V506 as seen from the side. Fig.73 This is a diagram of vehicle V506 as viewed from above.

[0590] In recent years, it is expected that the interior of a car will be used more actively as a room for personal use. In addition, since the interior is frequently accessed, ease of getting on and off is also required.

[0591] On the other hand, electric vehicles are also expected to be equipped with more batteries. Therefore, if the batteries are installed under the floor, the floor will become higher, which will make it difficult to get in and out of the vehicle.

[0592] The vehicle V506 of the sixth embodiment has a battery storage section 550 for storing a battery BT50, and at least a portion of the battery storage section 550 is disposed on the floor of the vehicle V506. Furthermore, the upper surface 552a of the battery storage section 550 disposed on the floor is configured to be located at a higher position than the upper surface of the seat cushion 511E of the vehicle seat S50 mounted in the vehicle.

[0593] Since the battery BT50 is not arranged under the floor, the height of the floor 504 can be lowered, making it easier to get on and off the vehicle.

[0594] Vehicle V506 is an electric vehicle, such as Fig.70 As shown, the vehicle comprises: a vehicle compartment 502 equipped with a vehicle seat S506; a motor room 555 located in front of the vehicle compartment 502 and equipped with a motor M50, etc.; and tires 507 located at the four corners of the vehicle body. In the past, the battery that supplies power to the motor M50 was often located under the floor of the vehicle compartment, so the floor was located at a high position.

[0595] The vehicle V506 of the sixth embodiment includes a battery storage section 550 for storing a battery BT50. Fig.70 As shown, the battery storage section 550 includes a first battery storage section 551 disposed in the motor room 555 and a second battery storage section 552 mainly disposed in the vehicle compartment 502. The first battery storage section 551 is disposed in a manner such that its long axis direction is along the left-right direction (width direction) of the vehicle V506. Moreover, the second battery storage section 552 is disposed in a manner such that its long axis direction is along the front-rear direction of the vehicle V506. Therefore, the battery storage section 550 is formed in a T-shape as a whole when viewed from above.

[0596] like Fig.70 As shown, the second battery storage section 552 is arranged higher than the floor 504G in the vehicle compartment. Moreover, the upper surface 552a of the second battery storage section 552 is formed to be at a higher position than the upper surface of the seat cushion 511E. In other words, a large central tunnel is provided in the central part of the vehicle compartment 502, and the battery BT50 is arranged inside it.

[0597] Since the battery is not disposed under the floor, a low floor can be provided. Furthermore, since the battery storage portion 550 has high rigidity, the rigidity of the vehicle body can be increased by disposing it in the center of the vehicle compartment.

[0598] In the vehicle cabin 502 of the vehicle V506, a plurality of vehicle seats S506 (front seat SF506, rear seat SR506) are mounted. Fig.70 As shown, the vehicle seat S506 is arranged on the left and right of the second battery storage section 552 and can move in the front-to-back direction. The movement in the front-to-back direction is achieved by a track device 517 provided on the vehicle seat S506. The track device 517 includes an upper rail 517a provided on the seat side, a lower rail 517b for the upper rail 517a to slide, and a side rail 517c. The lower rail 517b is an outer slide rail and is arranged on the floor on the outer side of the vehicle. In addition, the side rail 517c is an inner slide rail and is arranged on the side of the second battery storage section 552. By arranging the side rail 517c on the side of the second battery storage section 552, the seat rigidity of the vehicle seat S506 can be improved.

[0599] The second battery storage portion 552 may also be divided to form a space for a person to pass through in the middle. The passenger H50 can easily move to the seat on the opposite side.

[0600] Furthermore, the battery BT50 disposed in the second battery storage portion 552 may be slidable rearward. By making the battery BT50 slidable, replacement of the battery BT50 becomes easy.

[0601] Moreover, the battery storage section 550 of the present embodiment is formed into a T-shape, but a third battery storage section extending in the width direction may be further provided in the vehicle compartment so that the battery storage section 550 is formed into an H-shape as a whole.

[0602] Furthermore, a cup holder, a storage box, an armrest, etc. may also be provided on the upper surface 552a of the second battery storage portion 552. Furthermore, an accessory 556 (installation portion) may also be provided, and the accessory 556 (installation portion) is used to install various external devices such as a lighting device or a display device such as a display, a table, etc. Furthermore, current may flow to the external device by connecting the external device to the accessory 556. For example, even if a power source is not separately connected to a socket, current may flow to the lighting device or the display device by connecting the lighting device or the display device to the accessory 556 to light it up.

[0603] use Fig.72 and Fig.73 To illustrate other layouts in the carriage 502. Fig.72 As shown, by folding the rear seat SR506 and sliding it forward, a space can be formed at the rear of the vehicle compartment 502. The widened space can be used as a bedroom or a luggage storage.

[0604] Furthermore, the space can be used as a workspace by connecting the table 519 or the display device 536 to the second battery storage section 552 and arranging a favorite chair 547 around the second battery storage section 552. Furthermore, a hammock or the like can be hung from the roof 506 to use it as a bedroom.

[0605] <Seventh embodiment>

[0606] use Fig.74 A vehicle V507 as a seventh example of the present embodiment will be described. Fig.74 It is a diagram schematically showing the structure of the vehicle V507 and is a diagram of the vehicle V507 as seen from the side.

[0607] In the past, dashboards were equipped with displays for displaying map information in car navigation systems, etc. In the future, it is expected that displays with larger screens or multiple displays will be configured to display more information. However, if the display becomes larger or multiple, there is a problem that a portion away from the driver's seat or a display configured far away will not be accessible by hands or fingers if the display is simply tilted, making it difficult to perform touch operations.

[0608] Therefore, in the vehicle V507, even if the display device 536 capable of touch operation is arranged at a position far from the operator, such as the instrument panel 509, it can be moved toward the operator's seat to become operable.

[0609] If we describe it in more detail, Fig.74 As shown, a dashboard 509 capable of storing transportation equipment is provided at the front side of a vehicle cabin 502 , and a display device 536 capable of touch operation is mounted on the dashboard 509 via a retractable arm 548 .

[0610] The instrument panel 509 corresponds to the device storage unit of the present invention, and the display device 536 corresponds to the image display device.

[0611] The display device 536 can be moved to the vicinity of the operator by the arm 548 , and for example, a passenger sitting in the front seat SF507 or the middle seat SM507 serving as a passenger seat can also perform touch operations on the display device 536 .

[0612] In addition, a movable mechanism such as an actuator may be provided on the arm 548 so that the arm 548 can be automatically moved to the vicinity of the operator. In this case, the arm 548 can be moved when the operator wishes to operate the arm 548. For example, when the driver presses an operation switch provided on the steering wheel, the display device 536 can be moved to the vicinity of the driver. Furthermore, the line of sight of the passenger H50 may be detected by the in-vehicle camera 557, and when the passenger H50 is looking at the display device 536, the display device 536 can be moved to the vicinity of the passenger H50. Furthermore, the voice of the passenger may be acquired by a microphone provided in the vehicle compartment, and the arm 548 can be moved according to the instructions given by the passenger H50 through the voice.

[0613] When the display device 536 is moved, the body shape or position of the occupant can be detected by the pressure sensor used in the in-vehicle camera 557 or the seat belt reminder, and an appropriate operable position can be obtained to move the display device 536 to this position. The position of the display device 536 is estimated by the ECU installed in the vehicle V507.

[0614] The display device 536 may be detachably provided from the instrument panel 509, and the detached display device 536 may be wirelessly connected to the ECU in the vehicle to be operable. Furthermore, the passenger H50 may use the display device 536 like a tablet terminal.

[0615] Furthermore, part or the entirety of the instrument panel 509 may be tilted or the height may be changed together with the display device 536, and the display device 536 may be pushed out toward the operator.

[0616] <Eighth Embodiment>

[0617] use Figure 75 to Figure 77 A vehicle V508 as an eighth example of the present embodiment will be described. Fig.75 It is a diagram schematically showing the structure of vehicle V508 and is a cross-sectional view of vehicle V508 as viewed from above. Fig.76 It is a diagram showing an example of a seat layout of a vehicle V508 and is a cross-sectional view of the vehicle V508 as viewed from above. Fig.77 It is along Fig.76 1 is a cross-sectional view taken along line F1-F1 of the vehicle V508 and is a view of the vehicle V508 as viewed from the front.

[0618] In a vehicle that can be driven automatically, passengers can be freed from driving and spend time freely in the car at their favorite places. When working or studying in the car, if there is a large table in the car, it will be convenient and comfortable.

[0619] Japanese Patent Publication No. 2022-105207 discloses a vehicle seat having a table on the back of the vehicle seat. However, the table provided on the vehicle seat in the past is not for performing work (such as studying or working) in the vehicle, so there is a problem that the table surface is small and difficult to perform work. In addition, since the position of the table is fixed, there is a problem that the table can only be used at a specified seat.

[0620] The vehicle V508 as the eighth example of the present embodiment has a compartment 502 (interior space) for the passenger H50 to enter, and a wall portion 503 including a floor 504, a roof 506, and a side wall 505 surrounding the compartment 502. Furthermore, the vehicle V508 includes a table rail 553 provided on the floor 504 and a table 554 slidably mounted on the table rail 553.

[0621] In the vehicle V508, a plurality of vehicle seats S508 (front seat SF508, middle seat SM508, rear seat SR508) are provided for the passengers H50 to sit, and the vehicle seats S508 can slide in the front-rear direction through the seat rails (lower rails 517b) arranged on the floor surface. In addition, each vehicle seat S508 includes a reclining device 514, a height adjustment device 515, and a seat rotation device 516, so that the rearward tilt angle of the seat back or the height and direction of the seat cushion can be changed.

[0622] like Fig.75 As shown, the table rail 553 is arranged in the middle of the width direction of the vehicle V508 so as to extend in the front-rear direction. It is also arranged to extend in the left-right direction (seat width direction) between the front seat SF508 and the middle seat SM508, and between the middle seat SM508 and the rear seat SR508. The table 554 can move in the front-rear direction or the width direction along the table rail 553. In addition, the table 554 can also be the center console 549.

[0623] When the passenger H50 wants to use the table 554 in the front seat SF508, the passenger H50 can move the table 554 forward for use. Also, when the passenger H50 wants to use the table 554 in the rear seat SR508, the passenger H50 can move the table 554 backward for use.

[0624] Therefore, even if the table is not provided at each seat, the table 554 can be moved to the seat where the passenger who wishes to use the table 554 is seated and can use the table 554.

[0625] The table 554 that was previously provided on each seat is no longer needed, which can save wasted space and achieve weight reduction. When the passenger H50 does not use the table 554, the table 554 can be arranged in a position that does not cause an obstruction, such as behind the rear seat SR508.

[0626] The table 554 can also be detachably mounted on the table rail 553. When the table 554 is not needed, it can be removed from the table rail 553 and stored behind the rear seat SR508.

[0627] Furthermore, the table 554 may be detachable, and the detached table 554 may be attached to the dashboard 509 or the door 505d. Furthermore, the table 554 may be attached to the seat rail (lower rail 517b) for moving the vehicle seat S508 forward and backward to slide. Furthermore, the vehicle seat S508 may be detached from the seat rail, and the table 554 may be attached using the rail.

[0628] Furthermore, the table 554 may be installed to the dashboard 509 in a storable manner, and when in use, it may be pulled out by the passenger H50 and installed to the table rail 553. Furthermore, the table 554 may be installed to the roof 506 in a storable manner, and may be pulled out and used as needed.

[0629] The table 554 moving on the rails can also move in conjunction with the opening and closing of the door 505d. In addition, the table 554 can also move in conjunction with the movement of the vehicle seat S508.

[0630] Furthermore, the center console 549 provided with a beverage holder and the like may be made detachable, and the detached center console 549 may be used as a table 554 that moves on rails.

[0631] The table 554 that can move on the track can be configured to topple over in the event of a collision for safety reasons. Fig.77 As shown, an airbag device 528c as the occupant protection device 528 is provided on the table 554. When a collision occurs, the bag body 528d of the airbag device 528c is deployed. Furthermore, when the vehicle seat S508 rotates, the table 554 on the track can be moved to a position convenient for the occupant H50 to use according to the direction of the seat.

[0632] Moreover, if Fig.76 As shown, when a plurality of vehicle seats S508 are rotated in the vehicle cabin, control can be performed as follows. The following control is performed by, for example, an ECU (control unit) not shown in the figure which is mounted on the vehicle V508 and connected to each vehicle seat S508.

[0633] First, biological information is acquired by a biosensor (sensor unit) provided in the vehicle seat S508 to estimate the body type of the seated occupant, such as the height of the occupant. The biosensor is, for example, a pressure sensor provided on the surface of a seat cushion.

[0634] Next, when the plurality of vehicle seats S508 in the vehicle compartment rotate, the movement amount and rotation amount of the vehicle seats S508 and the movement order (operation order) of the vehicle seats S508 are automatically calculated so that the feet of the passengers H50 do not touch each other.

[0635] When estimating the body shape of the occupant H50, it is possible to estimate the body shape not only by using the biometric sensor provided in the vehicle seat S508 but also by using the in-vehicle camera 557 that captures the interior of the vehicle.

[0636] Furthermore, an information transmission component may be included, which provides information on the start of rotation to the seated passenger H50 when the vehicle seat S508 rotates. As the information transmission component, for example, a light source located at a position visible to the passenger H50 may be illuminated. Alternatively, as the information transmission component, a vibration device provided in the vehicle seat S508 may be vibrated.

[0637] Furthermore, as the information transmission means, a speaker in the vehicle may be used to notify the start of the rotation by voice or warning sound. For example, a posture instruction means may be included, which instructs the occupant H50 to change the posture of the occupant H50 during the seat operation when rotating, and the posture instruction means informs the occupant H50 of a message such as "Please lift your feet and wait" by voice. Furthermore, the same message may be displayed on a display in the vehicle.

[0638] Furthermore, when the vehicle seat S508 is rotated, the table 554 or the center console 549 which is movably provided may be retracted to the position below the instrument panel 509 or to the position of the rear seat SR508. Alternatively, an operation such as moving to the center of the vehicle compartment 502 may be added.

[0639] Furthermore, each vehicle seat S508 may include a distance sensor or an in-vehicle camera for measuring the distance to an adjacent vehicle seat S508 or the distance to an occupant. When the distance sensor or the in-vehicle camera 557 detects or predicts a danger that the body of the occupant H50 may be caught between adjacent vehicle seats S508 during the operation of the seat or the movement of the vehicle seat, the movement of the vehicle seat S508 may be automatically stopped.

[0640] Furthermore, the seat operation and the rotation of the vehicle seat S508 may be performed when the door 505d of the vehicle V508, such as an electric sliding door, is open.

[0641] <Occupant protection device for table>

[0642] Multiple vehicle seats in a vehicle compartment such as Fig.76When the vehicle seat is oriented toward the center of the vehicle compartment, a center console or a table may be arranged in the center of the vehicle compartment. In this state, even if an occupant protection device such as an airbag device is provided on the vehicle seat, sufficient protection may not be provided.

[0643] Therefore, in the vehicle V508 of this embodiment, if Fig.76 As shown in FIG. 5 , an airbag device 528c that can be deployed outward is provided on a center console 549 or a table 554 disposed in the center of the vehicle. The airbag device 528c has an airbag module including a bag body 528d and an inflator. The airbag device 528c can be as follows: Fig.77 As shown, it is provided on the side wall portion of the center console 549 extending in the up-down direction.

[0644] Furthermore, in the case where a table 554 is included that horizontally extends from the center console 549 toward the outside in the horizontal direction, the airbag device 528 c can be provided at the outer end portion of the table 554 .

[0645] A plurality of airbag devices 528 c may be disposed on the table 554 , and when the bag body 528 d of the airbag is deployed, the bag body 528 d surrounds the entire circumference of the table 554 .

[0646] Furthermore, an airbag device 528c that deploys downward may be provided on the roof 506 of the vehicle V508 so that the bag body 528d covers the table 554 from above.

[0647] The vehicle of the present embodiment is described above using the figures. In addition, in the vehicles shown in the first to third embodiments, the seat backs are installed in the storage portion provided in any one of the mattress, the roof, and the side wall portion, but the position where the seat backs can be stored can also be selected from any one of the mattress, the roof, and the wall portion. For example, the seat backs of the front seats can be stored in the storage portion of the mattress, and the seat backs of the rear seats can be stored in the storage portion of the roof. Moreover, the support surface adjustment device or the occupant protection device installed in the vehicle V502 of the second embodiment can also be applied to the vehicle V501 of the first embodiment or the vehicles of other embodiments.

[0648] Description of Figure Numbers

[0649] <First embodiment>

[0650] S: Vehicle seat

[0651] P: Pad material

[0652] T: Surface material

[0653] BN1: Spine

[0654] BN2: Pelvis

[0655] MT: Mobile Terminal

[0656] AM: Airbag Module

[0657] 1: Seat cushion

[0658] 2: Seat back

[0659] 3: Headrest

[0660] 4: Slide rail

[0661] 10: Posture Improvement Support Device

[0662] 11: Air chamber (movable body)

[0663] 12: Shoulder Air Chamber

[0664] 12R: Right shoulder air chamber

[0665] 12L: Left shoulder air chamber

[0666] 13: Waist air chamber

[0667] 13U: First waist air chamber

[0668] 13D: Second waist air chamber

[0669] 14: Pelvic Air Chamber

[0670] 15: Pressure sensor

[0671] 16: Shoulder pressure sensor

[0672] 16R: Right shoulder pressure sensor

[0673] 16L: Left shoulder pressure sensor

[0674] 17: Waist pressure sensor

[0675] 17U: First waist pressure sensor

[0676] 17D: Second waist pressure sensor

[0677] 18: Pelvic pressure sensor

[0678] 20: Air supply pump

[0679] 21: Valve unit

[0680] 30: Control unit

[0681] 31: Signal acquisition unit (acquisition unit)

[0682] 32: LC operation unit (operation unit)

[0683] 33: Posture determination unit (determination unit)

[0684] 34: Air chamber control unit (movable body control unit)

[0685] 35: Set up the reception department

[0686] 36: Output control unit

[0687] 40: Posture display screen

[0688] 41: Posture display area

[0689] 42: Schematic diagram of the human body

[0690] 43: Posture confirmation display

[0691] 44: Waist curve value display

[0692] 45: Posture Improvement Support Information

[0693] 46: Chart display area

[0694] 47: Time Series Chart

[0695] 48: History display area

[0696] 49: Daily historical information

[0697] 50: Kneading execution screen

[0698] 51: Kneading position display area

[0699] 52: Kneading diagram

[0700] 53: Kneading auxiliary information

[0701] 54: Kneading status display area

[0702] 56: Mode selection button

[0703] 57: Display toggle button

[0704] 100: Back frame

[0705] 110: Side frame

[0706] 111: Side frame plate

[0707] 120: Upper frame

[0708] 121: Horizontal

[0709] 122: Vertical part

[0710] 123: Pillow support

[0711] 130: Lower frame

[0712] 140: Compression member

[0713] 141: Pressure section

[0714] 141A: Central recess

[0715] 141B: Right concave part

[0716] 141C: Left concave part

[0717] 142: Support

[0718] 143: Connecting wire

[0719] 143A: Upper connecting wire

[0720] 143B: Lower connecting wire

[0721] 144: Reinforcement

[0722] 144A: First reinforcement rib

[0723] 144B: Second reinforcement rib

[0724] 144C: ​​Third reinforcement rib

[0725] 145: Clamping claw

[0726] 200: Back frame

[0727] 210: Side frame

[0728] 220: Upper frame

[0729] 240: Compression member

[0730] 243: Connecting wire

[0731] 243A: Upper connecting wire

[0732] 243B: Lower connecting wire

[0733] 244: Clamping claw

[0734] 245: Air chamber fixings

[0735] 246: Tube

[0736] 300: Back frame

[0737] 310: Side frame

[0738] 311: First side frame piece

[0739] 312: Second side frame piece

[0740] 312a: Concavoconvex part

[0741] 312b: Flat part

[0742] 320: Upper frame

[0743] 321: Upper wall

[0744] 321a: Upper through hole

[0745] 321b: Upper reinforcement

[0746] 321c: Upper bend

[0747] 322: Lower wall

[0748] 322a: Bottom through hole

[0749] 322b: Lower reinforcement

[0750] 322c: Lower bend

[0751] 323: Anterior wall

[0752] 323a: Central

[0753] 324: Pillow guide

[0754] 324a: Support hole

[0755] 325: Headrest Pillow

[0756] <Second embodiment>

[0757] 401: Vehicle

[0758] 402: Vehicle door (opening and closing body)

[0759] 402F: Front door

[0760] 402R: Rear door

[0761] 402a: Door body

[0762] 402b: Upper part of the door

[0763] 402ba: Inner end

[0764] 402c: Window

[0765] 402d: Skylight

[0766] 402e: Door pockets

[0767] 402f: Lower end

[0768] 403: Roof

[0769] 403a: Skylight

[0770] 403b: Roof airbag device

[0771] 404: Floor

[0772] 405: Battery

[0773] 406: Tire

[0774] 407: Operating System Box

[0775] 407a: Rudder

[0776] 408: Window

[0777] 408a: Front window

[0778] 408b: Rear window

[0779] 408c: Side windows

[0780] 410, 410', 410": Vehicle seats (seats)

[0781] 410F: Front seats

[0782] 410M: Middle seat

[0783] 410R: Rear seat

[0784] 411: Seat cushion

[0785] 411a: Embankment

[0786] 412: Seat back

[0787] 412a: Embankment

[0788] 412b: Handrail

[0789] 413: Headrest

[0790] 413a: Inner end

[0791] 414: Leaning device

[0792] 415: Height adjustment device

[0793] 416: Seat swivel device

[0794] 417: Seat track

[0795] 418, 418A: Side support (occupant support member)

[0796] 418La, 418Ra: Air chamber for cushion

[0797] 418Lb, 418Rb: Back air chamber

[0798] 418Lc, 418Rc: Air chamber for handrails

[0799] 419: Speaker

[0800] 420, 420A, 420B: Instrument panel

[0801] 421, 421B: Panel body

[0802] 422, 422B: Extraction section

[0803] 423: Airbag device

[0804] 424: Storage area

[0805] 425: Storage table

[0806] 427: Footstool Department

[0807] 427a: Upper rotation axis

[0808] 427b: Lower rotation axis

[0809] 428: concave part

[0810] 430: Center console

[0811] 431: concave part

[0812] 432: Odor sensor

[0813] <Third Embodiment>

[0814] V501, V501A~V501C, V502, V502B, V503, V504, V504A, V504A', V505, V505A, V506~V508: Vehicle (transportation tool)

[0815] S50, S50A, S505: Vehicle seats

[0816] SF50: Front seats

[0817] SM50: Middle seat

[0818] SR50: Rear seats

[0819] BT50, BT501, BT502: Battery

[0820] M50: Motor

[0821] H50: Crew

[0822] P50: Pad

[0823] T50: Epidermis

[0824] 502: Carriage (interior space)

[0825] 503: Wall

[0826] 504, 504A, 504G: Floor

[0827] 504a, 504Aa: Upper floor

[0828] 504b, 504Ab: Lower floor

[0829] 504c: Air layer

[0830] 504d: Battery recess

[0831] 505: Sidewall

[0832] 505a: Front

[0833] 505b: Tailgate

[0834] 505c: Column

[0835] 505d: Door

[0836] 506: Roof (upper wall)

[0837] 506a: Skylight

[0838] 507: Tire

[0839] 508: Window

[0840] 508a: Front window

[0841] 508b: Rear window

[0842] 509: Instrument panel (equipment storage area)

[0843] 510, 510A, 510B, 510B', 510C: Mattress

[0844] 510a, 510Aa, 510Ba: Support surface

[0845] 510Ab: Floor avoidance

[0846] 511, 511A, 511D: Seat cushion

[0847] 512, 512B, 512B', 512C, 512D, 512E: Seat back

[0848] 512a, 512Ba: Support surface

[0849] 512b: Back support member

[0850] 512Bc: Through hole

[0851] 512d: Extension

[0852] 513: Headrest

[0853] 513a: Through hole

[0854] 514: Leaning device

[0855] 515: Height adjustment device

[0856] 516: Seat swivel device

[0857] 517: Track Device

[0858] 517a: Upper track

[0859] 517b: Lower track

[0860] 517c: Side rails

[0861] 518: Occupant support member

[0862] 519: Table

[0863] 520, 520B, 520B', 520C, 520D: Storage

[0864] 521, 521A, 521B, 521B', 521C, 521D: storage recess

[0865] 522: Connection

[0866] 522a: Rotation axis

[0867] 522b: Locking device

[0868] 523, 523': Recess for foot insertion

[0869] 523a~523h: first concave part to eighth concave part

[0870] 524: Filling component

[0871] 525: Heater

[0872] 526: Notification device

[0873] 527: Support surface adjustment device

[0874] 528: Occupant protection device

[0875] 528a: Side airbag

[0876] 528b: With export section

[0877] 528c: Airbag device

[0878] 528d: Bag body

[0879] 529: Framework

[0880] 530: Leg support

[0881] 531: Rudder

[0882] 532: Battery support wall

[0883] 534: Ventilation hole

[0884] 535: Gap

[0885] 536: Display device

[0886] 537: End support member

[0887] 538: Armrest

[0888] 539: Movable components

[0889] 540: Connecting parts

[0890] 541: Linear components

[0891] 542: Mesh component

[0892] 543: Surface components

[0893] 544: Installation components

[0894] 545: Luggage

[0895] 546: Luggage holding component

[0896] 547: Chair

[0897] 548: Arm

[0898] 549: Center console

[0899] 550: Battery storage

[0900] 551: First battery storage unit

[0901] 552: Second battery storage unit

[0902] 553: Table rail

[0903] 554: Table

[0904] 555: Motor room

[0905] 556: Attachment

[0906] 557: In-car camera

Claims

1. A control unit that controls to determine the posture of a seated person sitting on a chair and outputs the determination result to a display device, the control unit comprising: an acquisition unit that acquires pressure signals output by pressure sensors respectively provided on a plurality of movable bodies built into the chair; a calculation unit that inputs the plurality of pressure signals acquired by the acquisition unit into a predetermined calculation formula to calculate a lumbar curve value, which is an index related to the posture of the seated person; a determination unit that determines the posture of the seated person based on the lumbar curve value calculated by the calculation unit; as well as The output control unit controls to output the human body schematic diagram corresponding to the determination result of the determination unit to the display device.

2. The control unit according to claim 1, characterized in that The determination unit determines whether the posture of the seated person is at least a hunched posture, a standard posture, or a hunched posture based on the lumbar curve value, The output control unit controls to output characters indicating whether the posture of the seated person is the hunchback posture, the standard posture, or the hunched posture to the display device together with the human body diagram.

3. The control unit according to claim 1, characterized in that: The output control unit performs control to output a time series graph indicating a temporal change in the lumbar curve value to the display device.

4. The control unit according to claim 1, characterized in that: The control unit includes a movable body control unit that controls the movable body to be displaced. The calculation unit calculates a lumbar curve value variation, wherein the lumbar curve value variation is a calculated statistical variation of the lumbar curve value. The determination unit determines the low back pain level of the seated person based on the lumbar curve value variation calculated by the calculation unit, The movable body control unit controls the movable body to periodically displace based on a determination result of the low back pain level by the determination unit.

5. The control unit according to claim 1, characterized in that: The control unit includes a setting receiving unit that receives an input of a setting value related to the body shape of the seated person. The calculation unit calculates the lumbar curve value by inputting the pressure signal and the set value into the predetermined calculation formula.

6. A posture improvement support device, comprising: A control unit as claimed in any one of claims 1 to 5; as well as The chair has a plurality of movable bodies provided with the pressure sensors built therein.

7. A control method for controlling to determine the posture of a seated person sitting on a chair and outputting the determination result to a display device, wherein the control method is characterized in that: Computer execution: An acquisition step of acquiring pressure signals output by pressure sensors respectively provided on a plurality of movable bodies built into the chair; a calculation step of calculating a lumbar curve value which is an index related to the posture of the seated person by inputting the plurality of pressure signals acquired in the acquisition step into a predetermined calculation formula; a determination step of determining a posture of the seated person based on the lumbar curve value calculated in the calculation step; as well as An output control step is performed to output a human body schematic diagram corresponding to the determination result of the determination step to the display device.

Images