Vehicle seats

Abstract

To secure the convenience of an occupant in actions performed highly frequently by the occupant while maintaining support of the occupant in the vehicle travel.SOLUTION: A vehicle seat comprises: a seat back frame 20; a first side support 100; a first side skin 140; a first fluid air chamber 120 which is arranged in a vehicle front side end in the first side support and can expand and contract; a first bracket 110 which is provided in the first side support and in which a fixation object part 111 is fixed to the seat back frame and a support part 112 supports the first fluid air chamber 120 between the first side skin inner surface and itself; and a first cushion member 130. The first bracket 110 is an L-shaped member made of the fixation object part 111 and the support part 112 that supports the first fluid air chamber. The support part 112 is inclined in a direction of a backrest.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] In recent years, with the advancement and high functionality of vehicles, the development of vehicle seats equipped with additional functions has been underway. For example, in a vehicle seat with a side support device, the support structures built into the left and right side support portions of the seat back are moved to sandwich the upper body of the occupant with the left and right support structures and hold the side portions of the occupant's body.

[0003] Here, as this type of vehicle seat, for example, when the shift position is selected to the reverse range, the support adjustment mechanism 14 is controlled so that the support portion 15 is in an open state, and when the shift position is switched from the reverse range to the drive range in the forward direction and the state of the drive range has elapsed for a predetermined time, the support adjustment mechanism 14 is controlled so that the support portion is in a bulged state, and when the shift position is switched from the reverse range to the drive range in the forward direction and the state of the drive range has not elapsed for a predetermined time, the support adjustment mechanism is controlled so that the support portion maintains the open state, achieving both an improvement in the riding comfort when the vehicle is moving forward and ensuring the freedom of movement of the upper body when the vehicle is moving backward. A vehicle seat is disclosed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described in Patent Document 1, it is important to support the occupants so that their posture is stable while the vehicle is in motion. However, for operations that occupants perform frequently, even while the vehicle is in motion, such as shifting gears or placing or removing drinks from the cup holders on the center console, if the support for the occupants is too strong, it can make them feel cramped and hinder the occupants from performing these high-frequency operations that require large arm movements.

[0006] Furthermore, for example, if the side supports of a vehicle seat protrude significantly in order to enhance support for the occupant, it can hinder occupants from getting in and out of the vehicle, thus reducing convenience.

[0007] Therefore, the present invention has been made in view of the above-mentioned problems, and aims to provide a vehicle seat that maintains support for the occupant while the vehicle is in motion, while also ensuring the convenience of the occupant in actions that the occupant performs frequently. [Means for solving the problem]

[0008] Embodiment 1; One or more embodiments of the present invention include a seat back frame that forms the skeleton of the seat back, and the backrest of the seat back. Center console sideThe proposed vehicle seat comprises: a first side support provided on the seat; a first side surface covering the front side of the first side support; a first fluid chamber located at the front end of the vehicle inside the first side support and capable of expanding and contracting; a first bracket provided inside the first side support, with a fixed portion fixed to the seat back frame and a support portion supporting the first fluid chamber between itself and the inner surface of the first side surface; and a first cushion member arranged surrounded by the first fluid chamber, the fixed portion, the inner surface of the first side surface, and the seat back frame. The first fluid chamber is located on the front side of the vehicle between the first bracket and the first cushion member, and the first bracket is an L-shaped member consisting of the fixed portion and a support portion that supports the first fluid chamber, with the support portion being inclined toward the backrest.

[0009] Embodiment 2; Embodiments 1 or more of the present invention relate to the backrest of the seat back. Vehicle door side The proposed vehicle seat comprises a second side support provided therein, a second side surface covering the front side of the seat of the second side support, a second fluid chamber located at the front end of the vehicle inside the second side support and capable of expanding and contracting, a second bracket provided inside the second side support and fixed to the seat back frame, and supporting the second fluid chamber, and a second cushion member arranged surrounded by the inner surfaces of the second fluid chamber, the second bracket, and the second side surface, wherein the second fluid chamber is located on the rear side of the vehicle of the second cushion member and on the front side of the vehicle of the second bracket.

[0010] Embodiment 3; In one or more embodiments of the present invention, when a pressing force is detected inside the first side surface, the first fluid chamber contracts, and a portion of the first fluid chamber becomes part of the seat back. Backrest, center console side We are proposing a vehicle seat characterized by its ability to wrap around the seat.

[0011] Embodiment 4; In one or more embodiments of the present invention, when an occupant gets in or out of a vehicle, the second fluid chamber contracts, and the second cushioning member moves against the seat back. Backrest on the door side of the vehicle We propose a vehicle seat characterized by its ability to recline.

[0012] Embodiment 5; Embodiments 1 or more of the present invention are When passengers get on and off the vehicle The second fluid chamber teeth, We propose a vehicle seat characterized by maintaining a predetermined low-pressure state.

[0013] Embodiment 6; One or more embodiments of the present invention propose a vehicle seat characterized in that the second fluid chamber, the second bracket, and the second cushioning member are arranged so as not to overlap with the deployment area of ​​the side airbag. [Effects of the Invention]

[0014] According to one or more embodiments of the present invention, it is possible to ensure the convenience of the occupants in actions that they perform frequently, while maintaining support for the occupants during vehicle operation. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view of a vehicle seat according to an embodiment of the present invention, as seen from the front left side of the vehicle. [Figure 2] This is a cross-sectional view along line AA in Figure 1, showing the internal structure of the first side support constituting a vehicle seat according to an embodiment of the present invention during normal driving. [Figure 3] This is a cross-sectional view along line AA in Figure 1, showing the internal structure of the first side support constituting a vehicle seat according to an embodiment of the present invention during shift operation, etc. [Figure 4]It is a cross-sectional view taken along line B-B of FIG. 1 showing the internal structure of the second side support constituting the vehicle seat according to the embodiment of the present invention during normal driving. [Figure 5] It is a cross-sectional view taken along line B-B of FIG. 1 showing the internal structure of the second side support constituting the vehicle seat according to the embodiment of the present invention when a passenger gets on and off the vehicle. [Figure 6] It is a configuration block diagram regarding the supply of air to the first fluid air chamber and the second fluid air chamber in the vehicle seat according to the embodiment of the present invention. [Figure 7] It is a control system block diagram in the vehicle seat according to the embodiment of the present invention. [Figure 8] It is a control flow diagram during a shift operation of the first side support constituting the vehicle seat according to the embodiment of the present invention. [Figure 9] It is a control flow diagram when a passenger gets on and off the vehicle of the second side support constituting the vehicle seat according to the embodiment of the present invention.

Mode for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9.

[0017] <Embodiment> The vehicle seat 1 according to the present embodiment will be described with reference to FIGS. 1 to 9. In the drawings of FIGS. 1 to 5, the front side of the vehicle is indicated by an arrow FR, the rear side of the vehicle is indicated by an arrow BK, the upper side of the vehicle is indicated by an arrow UP, the left side of the vehicle when viewed from above the vehicle is indicated by an arrow LH, the right side of the vehicle is indicated by an arrow RH, the outside in the vehicle width direction of the vehicle is indicated by an arrow OUT, and the inside in the vehicle width direction of the vehicle is indicated by an arrow IN. In the following description, when directions such as up and down, front and back, left and right, and inside and outside are used for explanation, unless otherwise specified, they indicate the vehicle up and down direction, the vehicle front and back direction, the vehicle left and right direction, and the vehicle width direction.

[0018] <Configuration of Vehicle Seat 1> As shown in Figure 1, the vehicle seat 1 according to this embodiment is configured to include a seat cushion 11 on which the occupant CR sits, and a seat back 12 connected to the rear end of the seat cushion 11 and supporting the back of the occupant CR who is seated on the seat cushion 11. Furthermore, a headrest 13 that supports the occupant CR's head is connected to the upper end of the seatback 12.

[0019] The vehicle seat 1 is equipped with side support sections 100 and 200 for supporting the body of the occupant CR. Specifically, a first side support 100 is provided on the inside of the seat back 12 in the seat width direction, and a second side support 200 is provided on the outside of the seat back 12 in the seat width direction. The first side support 100 and the second side support 200 together support the occupant CR's back and waist from the sides.

[0020] As shown in Figure 2 or Figure 4, the seat back 12 comprises a metal seat back frame 20 which is a skeletal member, a first side surface covering the first fluid chamber and the first cushion member (described later), and a second side surface covering the second fluid chamber and the second cushion member (described later).

[0021] <Configuration of the first side support 100> As shown in Figure 2, the first side support 100 is composed of a first bracket 110, a first fluid chamber 120, a first cushioning member 130, and a first side surface 140. The first side support 100 is a side support provided on the inner side of the backrest 12A of the seat back 12 in the vehicle width direction, that is, on the center console side.

[0022] The first bracket 110 is an L-shaped member consisting of a fixed portion 111 and a support portion 112. The fixed portion 111 is fixed to the seat back frame 20, and the support portion 112 supports the first fluid chamber 120 between itself and the inner surface of the first side surface 140. Furthermore, the L-shaped first bracket 110 has a support portion 112 that is inclined toward the backrest 12A of the seat back 12.

[0023] The first fluid chamber 120 is formed by sewing a sheet-like material such as cloth into a bag shape, and is capable of expanding and contracting. The first fluid chamber 120 is supported on the rear side of the vehicle by a support portion 112 that constitutes the first bracket 110. The first fluid chamber 120 is located at the front end of the first side support 100 of the vehicle, and when the vehicle is in motion, as shown in Figure 2, it expands and deploys to increase rigidity, grip the upper body of the occupant CR, and secure a holding force to support the side of the occupant CR's body.

[0024] The first cushion member 130 is made of a foam such as urethane foam, and is arranged surrounded by the first fluid chamber 120, the fixed portion 111 of the first bracket 110, the inner surface of the first side surface 140, and the seat back frame 20.

[0025] The first side surface 140 is made of leather or synthetic leather, and covers the front side of the seat of the first side support 100.

[0026] Furthermore, Figure 3 shows the internal configuration of the first side support 100 when the occupant CR's arm ARM moves inward in the vehicle width direction due to shifting gears or inserting and removing a PET bottle or similar item from the cup holder on the center console side. In this case, the first fluid chamber 120 contracts, and due to the pressure received from the occupant CR's arm ARM, a portion of the first fluid chamber 120 curves around towards the backrest 12A of the seat back 12, along the inclination of the support portion 112 of the first bracket 110.

[0027] <Configuration of the second side support 200> As shown in Figure 4, the second side support 200 is composed of a second bracket 210, a second fluid chamber 220, a second cushioning member 230, and a second side surface 240. The second side support 200 is a side support provided on the outer side of the backrest 12A of the seat back 12 in the vehicle width direction, that is, on the side facing the vehicle door.

[0028] The second bracket 210 is fixed to the seat back frame 20 and supports the second fluid chamber 220. The second bracket 210 consists of a rectangular fixing member 210A, one end of which is fixed to the seat back frame 20, and a rectangular tilt prevention member 210B, the other end of which abuts against the inclined surface of the seat back frame 20 to prevent the rectangular fixing member 210A from tilting.

[0029] The second fluid chamber 220 is formed by sewing a sheet-like material such as cloth into a bag shape, and is capable of expanding and contracting. The second fluid chamber 220 is supported by a surface facing the fixing surface of the second bracket 210, which is a rectangular fixing member 210A, to the seat back frame 20, on the rear side of the vehicle. The second fluid chamber 220 is located at the front end of the second side support 200 of the vehicle, and when the vehicle is in motion, as shown in Figure 4, it expands and deploys to increase rigidity, grip the upper body of the occupant CR, and ensure a holding force that secures the sides of the occupant CR's body.

[0030] The second cushioning member 230 is made of a foam such as urethane foam and is positioned between the inner surface of the second side skin 240 and the second fluid chamber 220 so as to cover the second fluid chamber 220.

[0031] The second side surface 240 is made of leather or synthetic leather, and covers the front side of the seat of the second side support 200.

[0032] Furthermore, Figure 5 shows the process when the passenger CR gets on and off the vehicle. 2 Side support 2 00 shows the internal configuration. In this case, the second fluid chamber 220 contracts, and the contraction of the second fluid chamber 220 causes the second cushion member 230 to tilt toward the seat back 12. At this time, the second fluid chamber 220 maintains a predetermined low-pressure state. Here, "predetermined low-pressure state" means that even if a part of the occupant CR's body comes into contact with the second side surface 240 when getting in or out of the vehicle, the second side surface 24 0 This refers to a low-pressure state in which the impact on a part of the occupant CR's body is reduced through the second cushioning member 230, by the second bracket 210 and the seat back frame 20 that fixes the second bracket 210.

[0033] Furthermore, as shown in Figures 4 and 5, the second fluid chamber 220, the second bracket 210, and the second cushioning member 230 are positioned so as not to overlap with the deployment area of ​​the side airbag SEB.

[0034] <Component blocks related to fluid supply> As shown in Figure 6, the fluid supply configuration includes an air pump 310, a pressure regulating valve 320A, a pressure regulating valve 320B, a first fluid chamber 120, and a second fluid chamber 220.

[0035] The air pump 310 is a device that generates air to be supplied to the first fluid chamber 120 and the second fluid chamber 220, and injects or sucks in air as a fluid. In this embodiment, the air pump 310 is shared between the first side support 100 and the second side support; however, separate air pumps 310 may be provided for each side.

[0036] The pressure regulating valve 320A adjusts the pressure inside the first fluid chamber 120.

[0037] The pressure regulating valve 320B adjusts the pressure inside the second fluid chamber 220.

[0038] In this embodiment, a pressure regulating valve 320A or a pressure regulating valve 320B is provided in the middle of an air supply tube (not shown) that connects the air pump 310 to the first fluid chamber 120 and the second fluid chamber 220. Furthermore, when the pressure regulating valves 320A and 320B are opened, a discharge tube 58 (not shown) is connected to each valve for discharging the air from either valve 320A or 320B to the outside. The air pump 310, pressure regulating valve 320A, and pressure regulating valve 320B are fixed and positioned inside the vehicle seat 1.

[0039] <Configuration of the control block for the vehicle seat 1> As shown in Figure 7, the control block for the vehicle seat 1 includes an ECU 400, an occupant monitoring device 410, a vehicle speed sensor 420, a buckle sensor 430, an air pump 310, a pressure regulating valve 320A, and a pressure regulating valve 320B.

[0040] The ECU (Electronic Control Unit) 400 is a unit that electronically controls the vehicle's systems. In this embodiment, the air pump 310, pressure regulating valve 320A, pressure regulating valve 320B, etc., are controlled based on information input from the occupant monitoring device 410, vehicle speed sensor 420, and buckle sensor 430.

[0041] The occupant monitoring device 410 monitors the behavior of the vehicle's occupants (CR). The occupant monitoring device 410 monitors the behavior of the vehicle's occupants using a camera that incorporates an image sensor such as a CCD (Charge Coupled Device) or CIS (CMOS Image Sensor) and acquires images (including moving and still images) of the vehicle's occupants captured by the image sensor. In this embodiment, the system primarily monitors whether the occupant CR's arm ARM has moved inward in the vehicle width direction due to actions such as shifting gears or inserting and removing a plastic bottle or similar item from the cup holder on the center console, and outputs the detection result to the ECU 400.

[0042] The vehicle speed sensor 420 detects the vehicle's speed. Specifically, the vehicle speed sensor 420 detects, for example, the rotational speed of the output shaft and outputs the detection result to the ECU 400.

[0043] The buckle sensor 430 detects the fastening or unfastening status of the seat belt. Specifically, the buckle sensor 430 is installed, for example, on the buckle of a seat belt, and detects when the seat belt is fastened by detecting the insertion of the seat belt tongue into the buckle, and detects when the seat belt is not fastened by detecting the attachment or detachment of the seat belt tongue to the buckle.

[0044] <Processing of ECU 400 during shift operation of the first side support 100> Using Figure 8, the processing of the ECU 400 during a shift operation of the first side support 100 related to the vehicle seat 1 according to this embodiment will be explained.

[0045] First, the ECU 400 determines whether the vehicle speed is above a certain speed based on the input signal from the vehicle speed sensor 420 (step S110). If the ECU400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is not above a certain speed ("NO" in step S110), it determines that the vehicle is not in motion, returns to its original state, and waits.

[0046] On the other hand, if the ECU 400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is above a certain speed (YES in step S110), it determines that the vehicle is in motion and controls the air pump 310 and the pressure regulating valve 320A to expand the first fluid chamber 120 (step S120).

[0047] Next, the ECU 400 determines whether or not the occupant CR's arm ARM has moved toward the center console based on the input signal from the occupant monitoring device 410 (step S130). If the ECU400 determines, based on the input signal from the occupant monitoring device 410, that the occupant CR's arm ARM has not moved toward the center console ("NO" in step S130), it reverses its processing and enters standby mode.

[0048] On the other hand, if the ECU 400 determines, based on the input signal from the occupant monitoring device 410, that the occupant CR's arm ARM has moved toward the center console ("YES" in step S130), it controls the air pump 310 and the pressure regulating valve 320A to change the first fluid chamber 120 from an expanded state to a contracted state (step S140).

[0049] The above describes the processing of the ECU400 when the occupant CR performs a shift operation, but the same processing is performed whenever the occupant CR's arm ARM moves toward the center console, such as when inserting or removing a plastic bottle from the cup holder on the center console.

[0050] <Processing by ECU400 when the occupant CR gets on or off the second side support 200> figure 9 Using this, the processing of the ECU 400 when an occupant CR gets on or off the second side support 200 of the vehicle seat 1 according to this embodiment will be explained.

[0051] First, the ECU 400 determines whether the vehicle speed is above a certain speed based on the input signal from the vehicle speed sensor 420 (step S110). If the ECU400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is not above a certain speed ("NO" in step S110), it determines that the vehicle is not in motion, returns to its original state, and waits.

[0052] On the other hand, if the ECU 400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is above a certain speed (YES in step S110), it determines that the vehicle is in motion and controls the air pump 310 and the pressure regulating valve 320A. 2 Fluid chamber 2 Set 20 to the expanded state (Step S) 201 ).

[0053] Next, the ECU 400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is zero, and based on the input signal from the buckle sensor 430, whether or not the occupant CR has unfastened their seat belt (step S210). If the ECU400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is not zero, or based on the input signal from the buckle sensor 430, that the occupant CR is not wearing a seat belt ("NO" in step S210), it returns to its original state and waits.

[0054] On the other hand, if the ECU 400 determines, based on the input signal from the vehicle speed sensor 420, that the vehicle speed is zero, and based on the input signal from the buckle sensor 430, that the occupant CR has not fastened their seat belt ("YES" in step S210), then it controls the air pump 310 and the pressure regulating valve 320B to change the second fluid chamber 220 from an expanded state to a contracted state (step S220).

[0055] <Effects and Actions> As described above, the vehicle seat 1 according to this embodiment includes a seat back frame 20 that forms the skeleton of the seat back 12, a first side support 100 provided on the inside of the backrest 12A of the seat back 12 in the vehicle width direction, a first side surface 140 that covers the front side of the seat of the first side support 100, a first fluid chamber 120 that is inflatable and deflated and positioned at the front end of the vehicle inside the first side support 100, a first bracket 110 provided inside the first side support 100 with a fixed portion 111 fixed to the seat back frame 20 and a support portion 112 that supports the first fluid chamber 120 between itself and the inner surface of the first side surface 140, and a first cushion member 130 that is surrounded and positioned by the first fluid chamber 120, the fixed portion 111, the inner surface of the first side surface 140 and the seat back frame 20. In other words, when the vehicle is in motion, by expanding the first fluid chamber 120, the rigidity of the first side support 100 is increased, which grips the upper body of the occupant CR and holds the sides of the occupant CR's body, thereby ensuring sufficient holding force for the occupant CR. Therefore, even during sudden steering maneuvers or sharp turns while the vehicle is in motion, the upper body of the occupant CR is held in place and the sides of the occupant CR are supported, thereby stabilizing the occupant CR's seated position and protecting the occupant CR.

[0056] Furthermore, the first bracket 110 in the vehicle seat 1 according to this embodiment is an L-shaped member consisting of a fixed portion 111 and a support portion 112 that supports the first fluid chamber 120, and the support portion 112 is inclined in the direction of the backrest 12A. In other words, when the vehicle is in motion, it is important to increase the rigidity of the first side support 100 to grip the upper body of the occupant CR and hold the sides of the occupant CR's body, thereby ensuring sufficient holding force for the occupant CR. On the other hand, even when the vehicle is in motion, when the occupant's arm ARM moves inward in the vehicle width direction, such as when shifting gears or taking a plastic bottle or other item into or out of the cup holder on the center console, the rigidity of the first side support 100 may restrict the occupant's movement or make the operation itself difficult. Therefore, when the occupant CR moves their arm ARM inward in the vehicle width direction, such as when shifting gears or taking a PET bottle or the like into the cup holder on the center console side while the vehicle is in motion, the first fluid chamber 120 contracts, and due to the pressure received from the occupant CR's arm ARM, the contracted first fluid chamber 120 takes on a shape such that a part of the first fluid chamber 120 wraps around towards the backrest 12A of the seat back 12, along the inclination of the support portion 112 of the first bracket 110. This configuration does not hinder the operations that the occupant CR frequently performs while the vehicle is in motion, and because a portion of the first fluid chamber 120 wraps around towards the backrest 12A of the seat back 12, even if the first fluid chamber 120 contracts, it is possible to stabilize the occupant CR's seating posture and protect the occupant CR.

[0057] Furthermore, the vehicle seat 1 according to this embodiment includes a seat back frame 20 that forms the skeleton of the seat back 12, a second side support 200 provided on the outer side in the vehicle width direction of the backrest 12A of the seat back 12, a second side surface 240 that covers the front side of the seat of the second side support 200, a second fluid chamber 220 that is arranged at the front end of the vehicle inside the second side support 200 and is expandable and contractible, a second bracket 210 provided inside the second side support 200 and fixed to the seat back frame 20 and supporting the second fluid chamber 220, and a second cushion member 230 arranged inside the second side surface 240 so as to surround the second fluid chamber 220. In other words, when the vehicle is in motion, by expanding the second fluid chamber 220, the rigidity of the second side support 200 is increased, which grips the upper body of the occupant CR and holds the sides of the occupant CR's body, thereby ensuring sufficient holding force for the occupant CR. Therefore, even during sudden steering maneuvers or sharp turns while the vehicle is in motion, the upper body of the occupant CR is held in place and the sides of the occupant CR are supported, thereby stabilizing the occupant CR's seated position and protecting the occupant CR.

[0058] Furthermore, in the vehicle seat 1 according to this embodiment, the second side support 200 is configured such that when an occupant CR gets in or out of the vehicle, the second fluid chamber 220 contracts, and as the second fluid chamber 220 contracts, the second cushion member 230 collapses toward the seat back 12. In other words, when the vehicle is in motion, it is important to increase the rigidity of the second side support 200 to grip the upper body of the occupant CR and hold the sides of the occupant CR's body, thereby ensuring sufficient holding force for the occupant CR. On the other hand, when the occupant CR gets in or out of the vehicle, the rigidity of the first side support 100 may make the occupant CR's entry or exit movement cramped, or even make the entry or exit movement itself difficult. Therefore, when the occupant CR gets on or off, the second fluid chamber 220 contracts, and as the second fluid chamber 220 contracts, the second cushion member 230 falls in the direction of the seat back 12. This allows for the safe entry and exit of occupants without hindering their movement, and also stabilizes their seated position while the vehicle is in motion, thus protecting them. Furthermore, at this time, even if a part of the occupant CR's body comes into contact with the second side surface 240 when getting in or out of the vehicle, the second fluid chamber 220 maintains a low pressure state that reduces the impact on the occupant CR's body from the second bracket 210 and the seat back frame 20 that secures the second bracket 210, via the second side surface 24 and the second cushioning member 230. Therefore, even if a part of the occupant's body comes into contact with the second side surface 240 when getting in or out of the vehicle, the discomfort felt by the occupant due to the impact can be minimized.

[0059] Furthermore, in the second side support 200 of the vehicle seat 1 according to this embodiment, the second fluid chamber 220, the second bracket 210, and the second cushion member 230 are arranged so as not to overlap with the deployment area of ​​the side airbag SEB. Therefore, when the vehicle is in motion, the rigidity of the first side support 100 and the second side support 200 is increased to grip the upper body of the occupant CR and hold the sides of the occupant CR's body, thereby ensuring sufficient holding force for the occupant CR. Furthermore, in the event of a side collision with the vehicle, the side airbag SEB can inflate and deploy to protect the occupant CR. <Variation>

[0060] In this embodiment, it was shown that when an occupant CR gets on or off, the second fluid chamber 220 contracts, and as the second fluid chamber 220 enters a contracted state, the second cushion member 230 takes on a shape that causes it to tilt toward the seat back 12. However, if the image information obtained by the occupant monitoring device 410 can determine when the first occupant gets on, the ECU 400 may be controlled to take on the above shape when the first occupant gets on and when each occupant CR gets off, and then maintain that state thereafter.

[0061] Furthermore, in this embodiment, the vehicle speed sensor 420 is given as an example of an indicator for determining when an occupant CR gets in or out of the vehicle. However, for example, the determination of when an occupant CR gets in or out of the vehicle may be made using means for detecting the ignition state and a shift sensor.

[0062] Furthermore, the vehicle seat 1 of the present invention can be realized by recording the processing of the ECU400 on a recording medium readable by a computer system, and then loading and executing the program recorded on this recording medium into the ECU400. The computer system referred to here includes hardware such as an OS and peripheral devices.

[0063] Furthermore, "computer system" includes the homepage provisioning environment (or display environment) if the WWW (World Wide Web) system is being used. The above program may also be transmitted from the computer system in which the program is stored to another computer system via a transmission medium or by transmission waves within the transmission medium. Here, "transmission medium" for transmitting the program refers to a medium that has the function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.

[0064] Furthermore, the above program may be intended to implement some of the functions described above. It may also be a so-called differential file (differential program) that can implement the aforementioned functions in combination with programs already recorded in the computer system.

[0065] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and includes designs and the like that do not depart from the spirit of this invention. [Explanation of symbols]

[0066] 1; Vehicle seats 12; Seat back 12A; Backrest 20; Seat back frame 100; First side support 110; First bracket 111;Fixed part 112;Support part 120; First fluid chamber 130; First cushioning member 140; First side skin 200; Second side support 210; Second bracket 220; Second fluid chamber 230; Second cushioning member 240; Second side skin

Claims

1. The seat back frame forms the skeleton of the seat back, The first side support provided on the center console side of the backrest of the aforementioned seatback, The first side surface covering the front side of the seat of the first side support, A first fluid chamber, which is expandable and contractible, is located at the front end of the vehicle inside the first side support, A first bracket is provided inside the first side support, the fixed portion of which is fixed to the seat back frame, and the support portion of which supports the first fluid chamber between itself and the inner surface of the first side surface, The first fluid chamber, the fixed portion, the inner surface of the first side surface, and the first cushion member arranged surrounded by the seat back frame, Prepare, The first fluid chamber is located on the vehicle front side between the first bracket and the first cushion member. The first bracket is an L-shaped member comprising a fixed portion and a support portion for supporting the first fluid chamber, and the support portion is inclined in the direction of the backrest, characterized in that it is a vehicle seat.

2. The second side support provided on the vehicle door side of the backrest of the aforementioned seatback, The second side surface covering the front side of the seat of the second side support, A second fluid chamber, which is expandable and contractible, is located at the front end of the vehicle inside the second side support. A second bracket is provided inside the second side support, fixed to the seat back frame, and supports the second fluid chamber, The second fluid chamber, the second bracket, and the second cushioning member arranged surrounded by the inner surface of the second side skin, Prepare, The vehicle seat according to claim 1, characterized in that the second fluid chamber is located on the rear side of the second cushion member and on the front side of the second bracket.

3. When a pressing force is detected inside the first side surface, the first fluid chamber contracts. The vehicle seat according to claim 1, characterized in that a portion of the first fluid chamber wraps around to the center console side of the backrest of the seat back.

4. The vehicle seat according to claim 2, characterized in that when occupants get in or out of the vehicle, the second fluid chamber contracts and the second cushion member collapses toward the vehicle door side of the backrest of the seat back.

5. The vehicle seat according to claim 4, characterized in that the second fluid chamber maintains a predetermined low-pressure state when occupants get on or off the vehicle.

6. The vehicle seat according to any one of claims 2, 4, or 5, characterized in that the second fluid chamber, the second bracket, and the second cushioning member are arranged so as not to overlap with the deployment area of ​​the side airbag.

7. The vehicle seat according to any one of claims 2, 4, 5, or 6, characterized in that the second bracket comprises a rectangular fixing member, one end of which is fixed to the seat back frame, and a rectangular tilt prevention member, one end of which abuts against the inclined surface of the seat back frame to prevent tilting of the rectangular fixing member.

8. The vehicle seat according to claim 1 or 3, characterized in that the first bracket is positioned on the center console side of the backrest of the seat back frame.

9. A vehicle seat according to any one of claims 1 to 8, A control unit for controlling the vehicle seat, A crew monitoring device that outputs an input signal to the control unit, Equipped with, The control unit, when the vehicle speed is above a certain speed, puts the first fluid chamber into an expanded state. A vehicle characterized in that, based on the input signal, if it is determined that the occupant's arm has moved toward the center console, the first fluid chamber is put into a contracted state.

10. A vehicle seat according to any one of claims 2, 4, 5, 6, or 7, A control unit for controlling the vehicle seat, A sensor that detects the fastening / unfastening status of the seat belt, Equipped with, The control unit, when the vehicle speed is above a certain speed, expands the second fluid chamber. A vehicle characterized in that, when the vehicle speed is zero and it is determined that the seat belt is not fastened based on the input signal from the sensor, the second fluid chamber is put into a contracted state.

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