Vehicle seat

Abstract

The invention provides a vehicle seat with high usability. This vehicle seat is provided with: a seat cushion (12) which is positioned in front of a rear wheel cover (111) of a vehicle and which supports the buttocks and thighs of an occupant; a seat back (13) that supports the back of the occupant; a leaning mechanism part (14) which enables the seat back (13) to move obliquely relative to the seat cushion pad (12); and a lifting mechanism (15) capable of lifting and lowering the seat cushion (12) in the vertical direction with respect to the vehicle floor surface, the lifting mechanism (15) being configured so that the seat cushion (12) can lift and lower the seat cushion (12) when the seat arrangement is deformed by the leaning mechanism (14) in a collapsed state in which the seat cushion (12) is collapsed toward the seat back (13). The seat cushion (12) is raised in the vertical direction in conjunction with the tilting of the seat back (13) in a backward state so that the seat back (13) is positioned above the rear wheel cover (111) that avoids the interference with the rear wheel cover (111), and the seat back (13) has an armrest on one side thereof.

Description

Technical Field

[0001] The present invention relates to a vehicle seat for a rear seat of a vehicle. Background Art

[0002] In a vehicle seat for a rear seat of a vehicle, it is known to set the seat back to a state as close to horizontal as possible (hereinafter, sometimes referred to as a flat state) by folding the seat back of the rear seat (for example, see Patent Document 1). By deforming the seat arrangement to such a flat state, the interior of the vehicle can be used widely.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Utility Model Publication No. 2-76533 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, in Patent Document 1, when the seat back of the rear seat is to be folded back, a portion of the seat back (the portion of Patent Document 1) Figure 1 and Figure 2 The side back 13) of the vehicle will be in contact with the rear wheel housing (Patent Document 1) Figure 1 and Figure 2 Therefore, in Patent Document 1, only the remaining portion of the seat back that can be separated from this portion (the portion of Patent Document 1) is provided. Figure 1 and Figure 2 That is, in Patent Document 1, the seat back cannot be made completely flat as a whole, and thus the interior of the vehicle cannot be used as widely as possible.

[0008] As described above, there is a demand for further improvement in the usability of vehicle seats for rear seats of vehicles.

[0009] In view of the above circumstances, the present invention aims to realize a vehicle seat with high usability, and in particular, aims to provide a vehicle seat that can widely use the rear space of the vehicle after the seat layout is deformed into a completely flat state.

[0010] Technical means of solving problems

[0011] In order to solve the above-mentioned problems, the present invention provides the following vehicle seat.

[0012] [1] A vehicle seat is a vehicle seat for a rear seat of a vehicle, the vehicle seat comprising:

[0013] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0014] a seat back supporting the back of the occupant;

[0015] A leaning mechanism portion causes the seat back to tilt relative to the seat cushion; and

[0016] The lifting mechanism part can lift the seat cushion in a vertical direction relative to the vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism part toward the rearwardly tilted state of the seat back, the lifting mechanism part raises the seat cushion in the vertical direction in conjunction with the tilting movement of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing.

[0017] The seat back has an armrest on one side portion of the seat back for placing the occupant's arms when supporting the occupant's back.

[0018] [2] The vehicle seat according to [1], wherein a plurality of the vehicle seats are independently arranged in parallel along a vehicle width direction, and the plurality of lifting mechanism portions each lift the seat cushion as a lifting target independently of each other.

[0019] [3] The vehicle seat according to [1] or [2], wherein the armrest is rotatable with the end of the armrest as a rotation axis between an upright setting state and a non-upright setting state, wherein the upright setting state is a state in which the armrest protrudes in a direction intersecting with a surface of the seat back that is spread out toward the back of the occupant, and the non-upright setting state is a state in which the armrest extends along the surface of the seat back.

[0020] The seat back further includes a groove-shaped armrest storage groove portion capable of storing the armrest in the non-erect arrangement state.

[0021] [4] The vehicle seat according to [3], wherein the armrest has a curtain storage portion capable of storing a curtain, and the curtain functions as a partition curtain or a sunshade curtain inside the vehicle.

[0022] [5] The vehicle seat according to [3], wherein the armrest has an accessory mounting portion at a front end portion for mounting a predetermined accessory.

[0023] [6] The vehicle seat according to [3], wherein the armrest storage groove has a power supply port at a bottom portion for supplying power to an electronic device.

[0024] [7] A vehicle seat, which is a vehicle seat for a rear seat of a vehicle, comprising:

[0025] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0026] a seat back supporting the back of the occupant;

[0027] A leaning mechanism portion causes the seat back to tilt relative to the seat cushion; and

[0028] The lifting mechanism part can lift the seat cushion in a vertical direction relative to the vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism part toward the rearwardly tilted state of the seat back, the lifting mechanism part raises the seat cushion in the vertical direction in conjunction with the tilting movement of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing.

[0029] The seat cushion has a cushion bank portion occupying one side portion of the seat cushion and being rotatable separably from a remaining portion of the seat cushion excluding the cushion bank portion with a rear end portion of the cushion bank portion as a rotation axis.

[0030] [8] The vehicle seat according to [7], wherein a plurality of the vehicle seats are independently arranged in parallel along the vehicle width direction, and the plurality of lifting mechanism portions each lift the seat cushion as a lifting target independently of each other.

[0031] [9] The vehicle seat according to [7] or [8], wherein the seat cushion further includes a rotational position fixing mechanism that fixes a rotational position when the cushion bank portion is rotated to separate from the remaining portion of the seat cushion.

[0032]

[10] The vehicle seat according to [9], wherein the seat back has a protruding portion on a side of the seat back located in the rotation direction of the cushion pad bank portion, which abuts against the rotating cushion pad bank portion to inhibit further rotation of the cushion pad bank portion,

[0033] The cushion embankment is rotatable between a non-rotation state in which it occupies one of the side portions of the seat cushion while being aligned with the remaining portion of the seat cushion, and an abutment state in which it abuts against the extension of the seat back.

[0034]

[11] A vehicle seat is a vehicle seat for a rear seat of a vehicle, the vehicle seat comprising:

[0035] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0036] a seat back supporting the back of the occupant;

[0037] A leaning mechanism portion causes the seat back to tilt relative to the seat cushion; and

[0038] The lifting mechanism part can lift the seat cushion in a vertical direction relative to the vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism part toward the rearwardly tilted state of the seat back, the lifting mechanism part raises the seat cushion in the vertical direction in conjunction with the tilting movement of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing.

[0039] The seat cushion or the seat back has:

[0040] a curtain storage portion capable of storing a curtain that functions as a partition curtain or a sunshade curtain inside the vehicle; and

[0041] The engaging portion engages with a portion of the curtain in the extended state when the curtain is extended and used as a partition curtain or a sunshade curtain in the vehicle, thereby supporting the curtain.

[0042]

[12] The vehicle seat according to

[11] , wherein a plurality of the vehicle seats are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting mechanism parts independently lifts and lowers the seat cushion as the lifting object.

[0043]

[13] The vehicle seat according to

[11] or

[12] , wherein the seat cushion has a cushion bank portion, the cushion bank portion occupies one side portion of the seat cushion, and is rotatable separately from the remaining portion of the seat cushion excluding the cushion bank portion with the rear end portion of the cushion bank portion as a rotation axis,

[0044] The cushion pad bank has the curtain storage portion.

[0045]

[14] The vehicle seat according to

[13] , wherein the curtain storage portion is capable of storing a curtain having a foldable frame as the curtain.

[0046]

[15] A vehicle seat is a vehicle seat used as a rear seat of a vehicle, the vehicle seat comprising:

[0047] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0048] a seat back supporting the back of the occupant;

[0049] A leaning mechanism portion causes the seat back to be tilted relative to the seat cushion;

[0050] a lifting mechanism capable of lifting the seat cushion in a vertical direction relative to a vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism toward a rearwardly tilted state in which the seat back is tilted backward, the lifting mechanism raises the seat cushion in the vertical direction in conjunction with the tilting of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing; and

[0051] a sensor disposed on a seating surface of at least one of the seat cushion and the seat back,

[0052] The sensor functions as a human detection sensor capable of detecting a user in the rear space of the vehicle after the seat is arranged with the seat back deformed to the rearwardly tilted state.

[0053]

[16] The vehicle seat according to

[15] , wherein a plurality of the vehicle seats are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting mechanism parts independently lifts and lowers the seat cushion as the lifting object.

[0054]

[17] A vehicle seat according to

[15] or

[16] , wherein the sensor functions as a biosensor, and when the seat back is deformed by the reclining mechanism into a seat arrangement in which the seat is inverted relative to the vehicle floor surface, the biosensor can obtain biological information of the seated occupant.

[0055]

[18] The vehicle seat according to

[15] or

[16] , wherein the user is a child.

[0056]

[19] The vehicle seat according to

[15] or

[16] further includes a detection information sending unit, which sends the detected detection information of the user to the inside and / or outside of the vehicle.

[0057]

[20] A vehicle seat is a vehicle seat used as a rear seat of a vehicle, the vehicle seat comprising:

[0058] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0059] a seat back supporting the back of the occupant;

[0060] A leaning mechanism portion causes the seat back to be tilted relative to the seat cushion;

[0061] a lifting mechanism capable of lifting the seat cushion in a vertical direction relative to a vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism toward a rearwardly tilted state in which the seat back is tilted backward, the lifting mechanism raises the seat cushion in the vertical direction in conjunction with the tilting of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing; and

[0062] The air conditioning mechanism has a plurality of ventilation holes provided on the seat surface of the seat back, an air passage communicating with the ventilation holes and allowing air conditioning wind to flow, and an air conditioning fan communicating with the air passage and generating the air conditioning wind in the air passage.

[0063]

[21] The vehicle seat according to

[20] , wherein a plurality of the vehicle seats are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting mechanism parts independently lifts and lowers the seat cushion as the lifting object.

[0064]

[22] The vehicle seat according to

[20] or

[21] , wherein the air conditioning fan is provided near a corner of a seat back frame constituting the seat back.

[0065]

[23] The vehicle seat according to

[20] or

[21] , wherein the air conditioning fan is any one of an intake fan and the exhaust fan.

[0066]

[24] The vehicle seat according to

[20] or

[21] , wherein the air passage has:

[0067] an air passage groove portion, disposed inside the seat back, connecting the vent hole and the air conditioning fan; and

[0068] The groove covering portion covers the air passage groove portion from a back surface of the seat back facing the sitting surface.

[0069]

[25] A vehicle seat is a vehicle seat used as a rear seat of a vehicle, the vehicle seat comprising:

[0070] a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant;

[0071] a seat back supporting the back of the occupant;

[0072] A leaning mechanism portion causes the seat back to be tilted relative to the seat cushion;

[0073] a lifting mechanism capable of lifting the seat cushion in a vertical direction relative to a vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism toward a rearwardly tilted state in which the seat back is tilted backward, the lifting mechanism raises the seat cushion in the vertical direction in conjunction with the tilting of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing; and

[0074] The seat back support portion includes a rotation shaft portion installed on the back side of the seat back, and a support leg portion installed to be freely rotatable with the rotation shaft portion, and is formed to be able to be deformed into a folded state in which the support leg portion is folded along the back side portion, and an unfolded state in which the support leg portion is unfolded from the back side portion, respectively, and the seat back is supported from below by the support leg in the unfolded state.

[0075]

[26] The vehicle seat according to

[25] , wherein a plurality of the vehicle seats are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting mechanism parts independently lifts and lowers the seat cushion as the lifting object.

[0076]

[27] The vehicle seat according to

[25] or

[26] , wherein the seat back support portion further includes a support leg fixing portion that fixes the support leg in the folded state.

[0077]

[28] A vehicle seat according to

[20] or

[21] , wherein the seat back support portion further comprises a support leg lock release mechanism portion, wherein the support leg lock release mechanism portion is linked to deformation of the seat arrangement toward the rearward reclining state caused by the leaning mechanism portion, so as to release the fixation of the support leg by the support leg fixing portion.

[0078] [Effects of the Invention]

[0079] According to the invention described in [1], there is a lifting mechanism that can lift the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat arrangement is deformed by the reclining mechanism to tilt the seat back to the rearward position, the lifting mechanism can be used to adjust the height of the seat cushion to a position where the seat back does not interfere with the rear wheels. As a result, the height of the seat surface of the seat cushion and the seat surface of the seat back can be made consistent without generating a step difference. As a result, the seat arrangement can be deformed to a completely flat state (full flat state), and the rear space of the vehicle after the deformation can be used as widely as possible.

[0080] According to the invention described in [2], the heights of the adjacent rear seats can be relatively changed, and for example, the height of the seat cushions can be adjusted to be at the eye level of lying parents and children.

[0081] According to the invention described in [3], the upright setting and the storage of the armrest can be switched as needed, which is convenient.

[0082] According to the invention described in [4], there is no need to prepare a separate place to store the curtain when not in use, which helps save space in the vehicle.

[0083] According to the invention described in [5], it is possible to easily use the prescribed accessories that the occupant desires to use in the vehicle interior which is made wider by the arrangement of the seats in the rearward folded state.

[0084] According to the invention described in [6], when the armrest is arranged upright and there is space in the armrest storage groove, an electronic device such as a smart phone that needs to be charged can be placed in the space and connected to the power supply port for charging. Therefore, there is no need to separately ensure a place to place the electronic device when charging, which helps to save space in the vehicle.

[0085] According to the invention described in [7], there is a lifting mechanism part that can lift and lower the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat arrangement is deformed by the seat back being tilted to the rearward position by the leaning mechanism part, the height of the seat cushion can be adjusted to a position where the seat back does not interfere with the rear wheel by the lifting mechanism part. As a result, the height of the sitting surface of the seat cushion and the sitting surface of the seat back can be made consistent without generating a step difference. As a result, the seat arrangement can be deformed to a completely flat state (full flat state), and the rear space of the vehicle after deformation can be used as widely as possible. Moreover, by rotating the cushion embankment, the cushion embankment can function as an armrest for the occupant's arms when the seat cushion supports the occupant's buttocks and thighs.

[0086] According to the invention described in [8], the heights of adjacent rear seats can be relatively changed, for example, the height of the seat cushions can be adjusted to be at the eye level of lying parents and children.

[0087] According to the invention described in [9], the posture of the cushion pad bank is stabilized.

[0088] According to the invention described in

[10] , the posture of the cushion pad bank is further stabilized.

[0089] According to the invention described in

[11] , there is a lifting mechanism part that can lift and lower the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat arrangement is deformed by the seat back being tilted to the rearward position by the leaning mechanism part, the height of the seat cushion can be adjusted to a position where the seat back does not interfere with the rear wheel by the lifting mechanism part. As a result, the height of the sitting surface of the seat cushion and the sitting surface of the seat back can be made consistent without generating a step difference. Thus, the seat arrangement can be deformed to a completely flat state (fully flat state), and the rear space of the vehicle after deformation can be used as widely as possible. For example, in the fully flat state, when the curtain stored in the curtain storage part is unfolded and a part of it is engaged with the engaging part so that the curtain is supported, the space covered by the curtain can be expanded to the maximum extent.

[0090] According to the invention described in

[12] , the heights of adjacent rear seats can be relatively changed, for example, the heights of the seat cushions can be adjusted so that the sight heights of lying parents and children are aligned.

[0091] According to the invention described in

[13] , the cushion pad bank functions as an armrest for the occupant's arms when the seat cushion supports the occupant's buttocks and thighs, and there is no need to prepare an armrest separately. Furthermore, by providing the cushion pad bank with a curtain storage portion, there is no need to prepare a separate place to store the curtain when not in use. Therefore, further space saving in the vehicle is achieved.

[0092] According to the invention described in

[14] , the shape of the curtain when unfolded is stabilized by having a frame. However, if the curtain has a frame, the volume of the curtain when stored will increase, but since the frame can be folded and stored in the curtain storage unit, it will not affect the space saving in the vehicle brought about by the curtain storage unit.

[0093] According to the invention described in

[15] , there is a lifting mechanism part that can lift the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat back is tilted to the rearward position by the leaning mechanism part and the seat arrangement is deformed, the height of the seat cushion can be adjusted to a position where the seat back does not interfere with the rear wheel by the lifting mechanism part. As a result, the height of the seat surface of the seat cushion and the seat surface of the seat back can be made consistent, and almost no step difference is generated. As a result, the seat arrangement can be deformed to a completely flat state (fully flat state), and the rear space of the vehicle after the deformation can be used as widely as possible.

[0094] In addition, when the seat back is deformed to the rearward-falling state, the sensor provided on the seat cushion and / or the seat surface of the seat back can detect whether a user is using the rear space of the vehicle after the deformation, thereby making it easy to know whether there is a user in the rear space of the vehicle.

[0095] According to the invention described in

[16] , the heights of adjacent rear seats can be relatively changed, and for example, the height of the seat cushions can be easily adjusted so that the sight heights of lying parents and children are aligned.

[0096] According to the invention described in

[17] , when the seat back is in an inverted state, it can function as a biosensor for acquiring biometric information. Thus, it is possible to acquire biometric information such as the heart rate of a passenger sitting in a rear seat during driving, and the sensor switches its function according to the state of the seat back (rearward state or inverted state).

[0097] According to the invention described in

[18] , children are used as detection targets as users, so that guardians can easily recognize the presence of children playing or lying in the rear space of the vehicle based on the detection information.

[0098] According to the invention described in

[19] , detection information related to the presence or absence of a user using the rear space of the vehicle can be transmitted from the detection information transmitting unit to the inside or outside of the vehicle as an electrical signal. Thus, for example, a guardian sitting in the driver's seat in the vehicle or a guardian outside the vehicle can know the situation of the rear space of the vehicle.

[0099] According to the invention described in

[20] , there is a lifting mechanism part that can lift the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat arrangement is deformed by the reclining mechanism part to tilt the seat back to the rearward position, the lifting mechanism part can be used to adjust the height of the seat cushion to a position where the seat back does not interfere with the rear wheel. As a result, the height of the seat surface of the seat cushion and the seat surface of the seat back can be made consistent, and almost no step difference occurs. As a result, the seat arrangement can be deformed to a completely flat state (fully flat state), and the rear space of the vehicle after the deformation can be used as widely as possible.

[0100] In addition, by including the air conditioning mechanism, when the seat back is deformed to the above-mentioned rearward-folded state, the rear space of the vehicle can be ventilated by air conditioning wind, thereby improving the user's comfort.

[0101] According to the invention described in

[21] , the heights of adjacent rear seats can be relatively changed, and for example, the height of the seat cushions can be easily adjusted so that the sight heights of lying parents and children are aligned.

[0102] According to the invention described in

[22] , the air conditioning fan of the air conditioning mechanism is installed near the corner of the seat back frame. Thus, it is installed in a high-rigidity position without causing any hindrance to the user, so that stable fixation can be achieved, and even when the air conditioning fan is running, it is easy to suppress the generation of vibration or noise.

[0103] According to the invention described in

[23] , by using either the intake fan or the exhaust fan as an air conditioning fan, the ventilation direction of the rear space of the vehicle can be arbitrarily set, thereby improving the user's comfort.

[0104] According to the invention described in

[24] , the air passage of the air conditioning mechanism portion is formed by the combination of the air passage groove portion and the groove portion covering portion, thereby forming an air passage that allows air conditioning air to flow inside the seat back.

[0105] According to the invention described in

[25] , there is a lifting mechanism part that can raise and lower the seat cushion in the vertical direction relative to the vehicle floor surface. When the seat arrangement is deformed by the reclining mechanism part so that the seat back is tilted to the rearward position, the lifting mechanism part can be used to adjust the height of the seat cushion to a position where the seat back does not interfere with the rear wheel. As a result, the height of the seat surface of the seat cushion and the seat surface of the seat back can be made consistent, and almost no step difference is generated. As a result, the seat arrangement can be deformed to a completely flat state (fully flat state), and the rear space of the vehicle after the deformation can be used as widely as possible.

[0106] In addition, when the seat back is deformed to the rearward-folded seat arrangement, the seat back can be supported from below by the support leg that is deployed in the deployed state. That is, one end of the support leg that is deformed to the deployed state contacts the vehicle floor surface, thereby improving the load resistance performance of the seat back (vehicle seat) in a completely flat state. As a result, the rear space of the vehicle can be used for a wider range of purposes.

[0107] According to the invention described in

[26] , the heights of adjacent rear seats can be relatively changed, and for example, the height of the seat cushions can be easily adjusted so that the sight heights of lying parents and children are aligned.

[0108] According to the invention described in

[27] , the seat back support portion has a support leg fixing portion that fixes the support leg in a folded state. By fixing the support leg in a folded state folded along the back surface of the seat back, during normal driving, that is, when the seat back is in an inverted state, the rotation or displacement of the support leg can be limited, thereby suppressing the generation of vibrations, etc.

[0109] According to the invention described in

[28] , the support leg lock release mechanism part can be used to release the fixation of the support leg by the support leg fixing part in conjunction with the deformation of the seat arrangement of the seat back in the rearward tilted state, so that the support leg can be deformed from the folded state to the unfolded state. That is, when the seat back is tilted by the reclining mechanism part, the lock of the support leg fixed in the folded state can be released without special operation, and the support leg can be easily transformed into the unfolded state in which the support leg is unfolded, thereby improving the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] [ Figure 1 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0111] [ Figure 2 ] is a rough representation from the side Figure 1 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0112] [ Figure 3 ] is a diagram schematically showing the effect of this embodiment.

[0113] [ Figure 4 ] is a schematic diagram used to illustrate the function of the armrest in this embodiment.

[0114] [ Figure 5 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0115] [ Figure 6 ] is a rough representation from the side Figure 5 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0116] [ Figure 7 ] is a diagram schematically showing the effect of this embodiment.

[0117] [ Figure 8 ] is a schematic diagram used to illustrate the function of the cushion pad embankment in this embodiment.

[0118] [ Fig. 9 ] is a diagram schematically showing the effect of this embodiment.

[0119] [ Fig.10 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0120] [ Fig.11 ] is a rough representation from the side Fig.10 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0121] [ Fig.12 ] is a diagram schematically showing the effect of this embodiment.

[0122] [ Fig.13 ] is a schematic diagram used to illustrate the curtain storage section in this embodiment.

[0123] [ Fig.14 ] is schematically represented in Fig.12 The fully flat state is used to surround the occupants and is stored in Fig.13 FIG. 2 is a diagram showing the condition of curtains in a curtain storage section.

[0124] [ Fig.15 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0125] [ Fig.16 ] is a rough representation from the side Fig.15 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0126] [ Fig.17 ] is a diagram schematically showing the effect of this embodiment.

[0127] [ Fig.18 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0128] [ Fig.19 ] is a rough representation from the side Fig.18 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0129] [ Fig. 20 ] is a diagram schematically showing the effect of this embodiment.

[0130] [ Fig.21 ] is a diagram schematically showing the air passage groove portion.

[0131] [ Fig. 22 ] is a diagram schematically showing a cross-section of a seat back.

[0132] [ Fig.23 ] is a diagram schematically showing the structure of a vehicle seat according to one embodiment of the present invention from the front.

[0133] [ Fig.24 ] is a rough representation from the side Fig.23 FIG. 1 is a diagram showing a structure of a vehicle seat.

[0134] [ Fig.25 ] is a diagram schematically showing the structure of the back portion of the seat back.

[0135] [ Fig.26 ] is a diagram schematically showing the effect of this embodiment DETAILED DESCRIPTION

[0136] Below, while referring to the attached Figure 1 In addition, it should be understood that the present invention is not limited to the following embodiments, and that design changes and improvements can be appropriately implemented based on the common knowledge of those skilled in the art without departing from the gist of the present invention.

[0137] [First embodiment]

[0138] Figure 1 1 is a diagram schematically showing the structure of a vehicle seat 11 according to an embodiment of the present invention from the front. Figure 2 It is roughly shown from the side Figure 1 FIG. 1 is a diagram showing the structure of a vehicle seat 11, Figure 3 It is a diagram schematically showing the effects of this embodiment.

[0139] The vehicle seat 11 is a vehicle seat for a rear seat of a vehicle, and includes a seat cushion 12 , a seat back 13 , a reclining mechanism 14 , and a lifting mechanism 15 .

[0140] The seat cushion 12 is a portion of the vehicle seat 11 located in front of the rear wheel housing 111 of the vehicle and supporting the buttocks and thighs of the occupant. The seat cushion 12 includes a cushion body 121 including a member having a cushioning property for absorbing the impact when the occupant sits down, and a cushion frame 122 including a rigid member, supporting the cushion body 121 from the inside.

[0141] The seat back 13 is a part of the vehicle seat 11 that supports the back of the occupant. Like the seat cushion 12, the seat back 13 includes a seat back body 131 including a member having a cushioning property for absorbing shocks, and a seat back frame 132 including a rigid member that supports the seat back body 131 from the inside. The seat back 13 is connected to the rear end of the seat cushion 12 via a reclining mechanism 14 described later.

[0142] The reclining mechanism 14 is a portion of the vehicle seat 11 that causes the seat back 13 to tilt relative to the seat cushion 12. The reclining mechanism 14 also plays a role in connecting the seat back 13 to the rear end portion of the seat cushion 12.

[0143] The lifting mechanism 15 is capable of moving the seat cushion 12 in the vertical direction ( Figure 1 and Figure 2 The lifting mechanism 15 is a part of the vehicle seat 11 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 14 toward the rearward tilting state of the seat back 13, the seat cushion 12 is raised in the vertical direction in conjunction with the tilting of the seat back 13 toward the rearward tilting state so that the seat back 13 is located above the rear wheel housing 111 to avoid interference with the rear wheel housing 111. More specifically, the lifting mechanism 15 is Figure 2 The central linkage is connected to the movement of the seat back 13 rotating in the direction A in the figure and approaching the rearward tilt state, so that the seat cushion 12 and the seat back 13 connected to the rear end of the seat cushion 12 rise together in the direction B in the figure.

[0144] In addition, in this specification, the so-called "rearward tilt state" refers to a state in which the seat back 13 is close to being substantially horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 13 after the seat back 13 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 13 is rotated to a predetermined angle relative to the seat cushion 12. That is, if Figure 2 The seat back 13 shown in the solid line is only slightly tilted backward, and the seat cushion 12 does not start to rise. Figure 2 The seat cushion 12 is raised in the direction B while the seat back 13 indicated by the solid line in FIG. 1 is in the upward posture (that is, without the seat back 13 being tilted).

[0145] Here, the lifting mechanism 15 is connected to the cushion frame 122 in the seat cushion 12, and the cushion frame 122 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 12. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 13 is rotated to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0146] In this embodiment, the lifting mechanism 15 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0147] Figure 3 In the figure, the dotted line indicates the seat arrangement before the seat back 13 is folded backward, in other words, the vehicle seat 11 when the seat back 13 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 114. Furthermore, the vehicle seat 11 when the seat arrangement is folded backward is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 11 indicated by the dotted line and higher than the rear wheel housing 111. The seat cushion 12 rises in conjunction with the movement of the seat back 13 approaching the folded backward state, thereby enabling the vehicle to move in an upright position. Figure 3 As shown in FIG. 1 , the seat back 13 is connected to the seat cushion 12 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 111. In this case, unlike Patent Document 1, the seat back 13 is completely flat as a whole. As a result, Figure 3 As shown, the vehicle rear space 17 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0148] Here, it is preferable that a plurality of vehicle seats 11 are independently arranged in parallel along the vehicle width direction, and that the plurality of lifting and lowering mechanism portions 15 lift and lower the seat cushion 12 to be lifted and lowered independently of each other.

[0149] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0150] Next, the armrest provided on the seat back 13 will be described.

[0151] Figure 4 It is a schematic diagram for explaining the function of the armrest 16 in this embodiment.

[0152] In the vehicle seat 11 of the present embodiment, the seat back 13 has armrests 16 on the sides of the seat back 13 for placing the occupant's arms when the occupant's back is supported, that is, when the occupant sits in the vehicle seat 11 in a normal seat arrangement.

[0153] Here, it is preferred that Figure 4 As shown, the armrest 16 can be rotated with the end of the armrest 16 as a rotation axis between an upright setting state protruding in a direction intersecting with the surface of the seat back 13 unfolded toward the back of the occupant and a non-upright setting state extending along the surface of the seat back 13. The seat back 13 also has a groove-shaped armrest storage groove portion 16a that can store the armrest 16 in the non-upright setting state.

[0154] According to this form, the vertical setting of the armrest 16 can be switched as needed ( Figure 4 The armrest 16 shown in the figure is convenient for storage. The armrest 16 in the vertical position under the normal seat arrangement assumes the original function of the armrest, which is a place for the occupant's arms. On the other hand, Figure 4 In this way, the armrest 16 in the upright position under the rearward-folded seat arrangement is different from the original function, but assumes a convenient prescribed function in the wider vehicle interior (described later). When the prescribed function is not needed, the armrest 16 is stored in the armrest storage groove 16a, so that the existence of the armrest 16 can avoid being an obstacle to the effective use of the vehicle interior space. Figures 1 to 3 The state of the vehicle seat when the armrest 16 is stored in the armrest storage groove portion 16a is shown.

[0155] As the rotation mechanism of the armrest 16 , for example, a conventionally known rotation mechanism such as the mechanism of the reclining mechanism portion 14 for tilting the seat back 13 can be adopted.

[0156] In the above-mentioned preferred embodiment, it is more preferable that the armrest 16 has a curtain storage portion 18 capable of storing a curtain (not shown) functioning as a partition curtain or a sunshade curtain inside the vehicle.

[0157] According to this aspect, there is no need to prepare a separate place to store the curtain when not in use, which contributes to space saving in the vehicle.

[0158] Furthermore, in the above-described preferred embodiment, it is more preferable that the armrest 16 has an accessory mounting portion 19 for mounting a predetermined accessory (not shown) at a front end portion.

[0159] According to this aspect, a predetermined accessory that the occupant desires to use in the vehicle interior widened by the rearwardly folded seat arrangement can be attached to the front end portion of the armrest 16 in the upright state for use.

[0160] Here, as a simple example, the prescribed accessories include a wall hanging with a bag for putting small items, a hanger for hanging towels, etc., or accessories for hanging such as calendars. As the accessory mounting portion 19 at this time, for example, a hook-shaped mounting member or a clip-shaped mounting member for clamping small items can be listed, and a simple screw can also be used.

[0161] Furthermore, by providing the accessory mounting portion 19 with not only a simple physical mounting function but also a power supply function, the prescribed accessories can be expanded to appliances or equipment that consume power. For example, for small electronic appliances such as lighting or small display devices that display images, which are examples of the prescribed accessories, the accessory mounting portion 19 can be used as a component that serves as both a physical mounting portion and a power supply portion.

[0162] In the above description, the function of the armrest 16 is described, but the armrest storage groove portion 16a for storing the armrest 16 may have the same function.

[0163] For example, in the above-described preferred embodiment, it is more preferable that the armrest storage groove portion 16a has a power supply port portion 110 at the bottom thereof for supplying power to the electronic device.

[0164] According to this form, Figure 4 In this way, when the armrest 16 is arranged upright and there is space in the armrest storage groove 16a, electronic devices that need to be charged, such as smart phones, can be placed in this space and connected to the power supply port 110 for charging. Therefore, there is no need to separately ensure a place to place the electronic devices when charging, which helps to save space in the car.

[0165] The above is the description of the first embodiment of the present invention.

[0166] In the above description of the embodiment, the vehicle seat 11 for the rear seat of the vehicle is described, but the "rear seat" mentioned here simply refers to the seat on the rear side of the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can also be applied to seats other than the last seat.

[0167] [Second embodiment]

[0168] Figure 5 2 is a diagram schematically showing the structure of a vehicle seat 21 according to an embodiment of the present invention from the front. Figure 6 It is roughly shown from the side Figure 5 The structure of the vehicle seat 21, Figure 7 It is a diagram schematically showing the effects of this embodiment.

[0169] The vehicle seat 21 is a vehicle seat for a rear seat of a vehicle, and includes a seat cushion 22 , a seat back 23 , a reclining mechanism 24 , and a lifting mechanism 25 .

[0170] The seat cushion 22 is a portion of the vehicle seat 21 located in front of the rear wheel housing 211 of the vehicle and supporting the buttocks and thighs of the occupant. The seat cushion 22 includes a cushion body 221 including a member having a cushioning property for absorbing the impact when the occupant sits down, and a cushion frame 222 including a rigid member, supporting the cushion body 221 from the inside thereof.

[0171] The seat back 23 is a part of the vehicle seat 21 that supports the back of the occupant. Like the seat cushion 22, the seat back 23 includes a seat back body 231 including a member having a cushioning property for absorbing shocks, and a seat back frame 232 including a rigid member that supports the seat back body 231 from the inside. The seat back 23 is connected to the rear end of the seat cushion 22 via a reclining mechanism 24 described later.

[0172] The reclining mechanism portion 24 is a portion of the vehicle seat 21 that causes the seat back 23 to tilt relative to the seat cushion 22. The reclining mechanism portion 24 also plays a role in connecting the seat back 23 to the rear end portion of the seat cushion 22.

[0173] The lifting mechanism 25 is capable of moving the seat cushion 22 in the vertical direction ( Figure 5 and Figure 6 The lifting mechanism 25 is a part of the vehicle seat 21 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 24 toward the rearward tilting state of the seat back 23, the seat cushion 22 is raised in the vertical direction in conjunction with the tilting of the seat back 23 toward the rearward tilting state so that the seat back 23 is located above the rear wheel housing 211 to avoid interference with the rear wheel housing 211. More specifically, the lifting mechanism 25 is Figure 6 The central linkage is connected to the movement of the seat back 23 rotating in the direction A in the figure and approaching the rearward tilt state, so that the seat cushion 22 and the seat back 23 connected to the rear end of the seat cushion 22 rise together in the direction B in the figure.

[0174] In addition, in this specification, the so-called "rearward tilt state" refers to a state in which the seat back 23 is close to being roughly horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 23 after the seat back 23 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 23 is rotated to a predetermined angle relative to the seat cushion 22. That is, if Figure 6 The seat back 23 shown in the solid line is only slightly tilted backward, and the seat cushion 22 does not start to rise. Figure 6 The seat cushion 22 is raised in the direction B while the seat back 23 indicated by the solid line in FIG. 2 is in the upward posture (that is, without the seat back 23 being tilted).

[0175] Here, the lifting mechanism 25 is connected to the cushion frame 222 in the seat cushion 22, and the cushion frame 222 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 22. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 23 is rotated to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0176] In this embodiment, the lifting mechanism 25 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0177] Figure 7 In the figure, the dotted line indicates the seat arrangement before the seat back 23 is folded backward, in other words, the vehicle seat 21 when the seat back 23 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 214. Furthermore, the vehicle seat 21 when the seat arrangement is folded backward is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 21 indicated by the dotted line and higher than the rear wheel housing 211. The seat cushion 22 rises in conjunction with the movement of the seat back 23 approaching the folded backward state, thereby enabling the vehicle to move in an upright position. Figure 7 As shown in FIG. 1 , the seat back 23 is connected to the seat cushion 22 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 211. In this case, unlike Patent Document 1, the seat back 23 is completely flat as a whole. As a result, Figure 7As shown, the vehicle rear space 27 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0178] Here, it is preferable that a plurality of vehicle seats 21 are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting and lowering mechanism portions 25 independently lifts and lowers the seat cushion 22 to be lifted and lowered.

[0179] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0180] Next, the cushion pad bank portion included in the seat cushion pad 22 will be described.

[0181] Figure 8 2 is a schematic diagram for explaining the function of the cushion pad bank 26 in this embodiment. Fig. 9 It is a diagram schematically showing the effects of this embodiment.

[0182] In the vehicle seat 21 of the present embodiment, the seat cushion 22 has a cushion bank 26 occupying one side portion of the seat cushion 22. The cushion bank can be rotated separately from the rest of the seat cushion 22 except for the cushion bank, with its rear end portion serving as a rotation axis.

[0183] By rotating in this way, the cushion bank 26 functions as an armrest for placing the occupant's arms when the seat cushion 22 supports the occupant's buttocks and thighs. As a result, it is no longer necessary to prepare an armrest separately, which contributes to space saving in the vehicle.

[0184] Here, if Figure 8 As shown, the seat cushion 22 has a bank rotation mechanism 29 that rotates the cushion bank 26 separately from the remaining portion of the seat cushion 22 except for the cushion bank. As the bank rotation mechanism 29, for example, a conventionally known rotation mechanism such as the mechanism of the reclining mechanism portion 24 that tilts the seat back 23 can be adopted.

[0185] At this time, it is preferable that the seat cushion pad 22 further includes a rotational position fixing mechanism that fixes the rotational position when the cushion pad bank portion 26 is rotated to be separated from the remaining portion of the seat cushion pad 22 .

[0186] According to this form, the posture of the cushion pad bank 26 is stabilized. In particular, the function of the cushion pad bank 26 as an armrest is improved by stabilizing the posture. Here, as the rotation position fixing mechanism, a rotation position fixing mechanism known in the past can be used. For example, a rotation position fixing mechanism such as Figure 8 As shown in the figure, there is a rotation position fixing mechanism including a locking pin 29a and a strip 29b, wherein the locking pin 29a is inserted into the embankment rotating mechanism 29 to prevent the embankment rotating mechanism 29 from rotating the cushion embankment 26, and the strip 29b is connected to the locking pin 29a. At this time, the locking pin 29a is inserted by the passenger, thereby fixing the rotation position of the cushion embankment 26. Then, the locking pin 29a is pulled out from the embankment rotating mechanism 29 by the passenger, thereby releasing the fixing of the rotation position of the cushion embankment 26 by the locking pin 29a, and the cushion embankment 26 becomes rotatable.

[0187] Furthermore, it is preferred that Figure 5 , Figure 8 and Fig. 9 As shown, the seat back 23 has a protruding portion 23 a on the side of the seat back 23 located in the rotation direction of the cushion bank 26 , which abuts against the rotating cushion bank 26 to suppress further rotation of the cushion bank 26 .

[0188] According to this form, the posture of the cushion pad bank 26 is further stabilized by the presence of the protruding portion 23a. At this time, the cushion pad bank 26 can occupy one side portion of the seat cushion pad 22 in a non-rotated state ( Figure 8 The state of the cushion pad bank 26 shown by the dotted line), and the contact state of the extension portion 23a abutting against the seat back 23 ( Figure 8 The state of the cushion pad embankment 26 shown by the solid line) Figure 8 Turn in the direction of the double arrow.

[0189] In particular, the cushion pad bank 26 in the near-contact state not only has the function of a simple armrest, but also can Fig. 9 When used as a backrest for an occupant, the load on the cushion pad bank 26 is greater than when used as a simple armrest, so the presence of the protruding portion 23a is particularly useful for stabilizing the posture of the cushion pad bank 26.

[0190] The extension 23a of the seat back 23 is responsible for limiting the rotatable angle range of the cushion embankment 26, but since the seat back 23 can be tilted until the rearward tilt state, the rotatable angle range of the cushion embankment 26 also changes according to the tilted state of the seat back 23. For example, in the normal seat arrangement, the cushion embankment 26 can be rotated within an angle range of about 0° to 90°, but in the rearward tilted seat arrangement, the cushion embankment 26 can be rotated within an angle range of about 0° to 180°.

[0191] The above is the description of the second embodiment of the present invention.

[0192] In the above description of the embodiment, the vehicle seat 21 for the rear seat of the vehicle is described, but the "rear seat" mentioned here simply refers to the seat on the rear side of the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can also be applied to seats other than the last seat.

[0193] [Third Embodiment]

[0194] Fig.10 1 is a diagram schematically showing the structure of a vehicle seat 31 according to an embodiment of the present invention from the front. Fig.11 It is roughly shown from the side Fig.10 FIG. 31 is a diagram showing the structure of a vehicle seat 31, Fig.12 It is a diagram schematically showing the effects of this embodiment.

[0195] The vehicle seat 31 is a vehicle seat for a rear seat of a vehicle, and includes a seat cushion 32 , a seat back 33 , a reclining mechanism 34 , and a lifting mechanism 35 .

[0196] The seat cushion 32 is a portion of the vehicle seat 31 located in front of the rear wheel housing 311 of the vehicle and supporting the buttocks and thighs of the occupant. The seat cushion 32 includes a cushion body 321 including a member having a cushioning property for absorbing the impact when the occupant sits down, and a cushion frame 322 including a rigid member, supporting the cushion body 321 from the inside thereof.

[0197] The seat back 33 is a part of the vehicle seat 31 that supports the back of the occupant. Like the seat cushion 32, the seat back 33 includes a seat back body 331 including a member having a cushioning property for absorbing shocks, and a seat back frame 332 including a rigid member that supports the seat back body 331 from the inside. The seat back 33 is connected to the rear end of the seat cushion 32 via a reclining mechanism 34 described later.

[0198] The reclining mechanism portion 34 is a portion of the vehicle seat 31 that causes the seat back 33 to tilt relative to the seat cushion 32. The reclining mechanism portion 34 also plays a role in connecting the seat back 33 to the rear end portion of the seat cushion 32.

[0199] The lifting mechanism 35 is capable of lifting the seat cushion 32 in the vertical direction ( Fig.10 and Fig.11 The lifting mechanism 35 is a part of the vehicle seat 31 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 34 toward the rearward tilting state of the seat back 33, the seat cushion 32 is raised in the vertical direction in conjunction with the tilting of the seat back 33 toward the rearward tilting state so that the seat back 33 is located above the rear wheel housing 311 to avoid interference with the rear wheel housing 311. More specifically, the lifting mechanism 35 is Fig.11 The central linkage is connected to the movement of the seat back 33 rotating in the direction A in the figure and approaching the rearward tilt state, so that the seat cushion 32 and the seat back 33 connected to the rear end of the seat cushion 32 rise together in the direction B in the figure.

[0200] In addition, in this specification, the so-called "rearward tilt state" refers to a state in which the seat back 33 is close to being roughly horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 33 after the seat back 33 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 33 is rotated to a predetermined angle relative to the seat cushion 32. That is, if Fig.11 The seat back 33 shown in the solid line is only slightly tilted backward, and the seat cushion 32 does not start to rise. Fig.11 The seat cushion 32 is raised in the direction B while the seat back 33 indicated by the solid line in FIG. 3 is in the upward posture (that is, without the seat back 33 being tilted).

[0201] Here, the lifting mechanism 35 is connected to the cushion frame 322 in the seat cushion 32, and the cushion frame 322 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 32. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 33 is rotated to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0202] In this embodiment, the lifting mechanism 35 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0203] Fig.12 In the figure, the dotted line indicates the seat arrangement before the seat back 33 is folded backward, in other words, the vehicle seat 31 when the seat back 33 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 314. Furthermore, the vehicle seat 31 when the seat arrangement is folded backward is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 31 indicated by the dotted line and higher than the rear wheel housing 311. The seat cushion 32 rises in conjunction with the movement of the seat back 33 approaching the folded backward state, thereby enabling the vehicle to move in an upright position. Fig.12 As shown in FIG. 1 , the seat back 33 is connected to the seat cushion 32 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 311. In this case, unlike Patent Document 1, the seat back 33 is completely flat as a whole. As a result, Fig.12 As shown, the vehicle rear space 37 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0204] Here, it is preferable that a plurality of vehicle seats 31 are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting and lowering mechanism portions 35 independently lifts and lowers the seat cushion 32 to be lifted and lowered.

[0205] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0206] Hereinafter, the curtain storage portion and the engaging portion included in the seat cushion 32 or the seat back 33 will be described.

[0207] Fig.13 2 is a schematic diagram for explaining the curtain storage section 38 in this embodiment. Fig.14 It is schematically represented in Fig.12 The fully flat state is used to surround the occupants and is stored in Fig.13 FIG. 2 is a diagram showing the condition of the curtain 310 in the curtain storage section 38 .

[0208] In the vehicle seat 31 of this embodiment, as shown in FIG. Fig.13 As shown, the seat cushion 32 or the seat back 33 has a curtain storage portion 38, and the curtain storage portion 38 can store a curtain or a sunshade that functions as a partition curtain or a sunshade in the vehicle. Fig.14 The curtain 310. Moreover, Fig.14 As shown, the seat cushion 32 or the seat back 33 also has snap-fitting parts 312 , 313 , which snap-fit ​​to a part of the unfolded curtain 310 when the curtain 310 is unfolded and used as a partition curtain or sunshade in the vehicle, thereby supporting the curtain 310 .

[0209] Through this structure, for example Fig.14 As shown, in the fully flat state, when the curtain 310 stored in the curtain storage portion 38 is unfolded and a part of it is engaged with the engaging portions 312 and 313 so that the curtain 310 is supported, the space covered by the curtain can be expanded to the maximum extent.

[0210] Here, it is preferred that Fig.13 As shown, the seat cushion 32 has a cushion bank 36, which occupies one side portion of the seat cushion 32 and can be rotated separately from the remaining portion of the seat cushion 32 except the cushion bank 36 with the rear end portion of the cushion bank 36 as a rotation axis, and the cushion bank 36 has a curtain storage portion 38, and the curtain storage portion 38 can store a curtain 310 that functions as a partition curtain or a sunshade curtain inside the vehicle.

[0211] According to this form, when the seat cushion 32 supports the buttocks and thighs of the occupant, the cushion bank 36 functions as an armrest for the occupant's arms, and there is no need to prepare an armrest separately. Furthermore, by providing the cushion bank 36 with the curtain storage portion 38, there is no need to prepare a separate place to store the curtain 310 when not in use. Therefore, further space saving in the vehicle is achieved.

[0212] in addition, Fig.13 2 , as an example, the seat cushion 32 (more precisely, the cushion bank 36 of the seat cushion 32 ) has the curtain storage portion 38 , but the present invention may also include a seat back having a curtain storage portion.

[0213] Here, if Fig.13 As shown, the seat cushion 32 has a bank rotating mechanism 39 for rotating the cushion bank 36 separately from the rest of the seat cushion 32 except for the cushion bank. As the bank rotating mechanism 39, for example, a conventionally known rotating mechanism such as the mechanism of the reclining mechanism portion 34 for tilting the seat back 33 can be adopted.

[0214] At this time, it is preferable that the seat cushion pad 32 further includes a rotational position fixing mechanism that fixes the rotational position when the cushion pad bank portion 36 is rotated to be separated from the remaining portion of the seat cushion pad 32 .

[0215] According to this form, the posture of the cushion pad bank 36 is stabilized. In particular, the function of the cushion pad bank 36 as an armrest is improved by stabilizing the posture. Here, as the rotation position fixing mechanism, a rotation position fixing mechanism known in the past can be used. For example, a rotation position fixing mechanism such as Fig.13 As shown in the figure, there is a rotation position fixing mechanism including a locking pin 39a and a strip 39b, wherein the locking pin 39a is inserted into the embankment rotating mechanism 39 to prevent the embankment rotating mechanism 39 from rotating the cushion embankment 36, and the strip 39b is connected to the locking pin 39a. At this time, the locking pin 39a is inserted by the passenger, thereby fixing the rotation position of the cushion embankment 36. Then, the locking pin 39a is pulled out from the embankment rotating mechanism 39 by the passenger, thereby releasing the fixing of the rotation position of the cushion embankment 36 by the locking pin 39a, and the cushion embankment 36 becomes rotatable.

[0216] Furthermore, it is preferred that Fig.10 and Fig.13 As shown, the seat back 33 has a protruding portion 33 a on the side of the seat back 33 located in the rotation direction of the cushion bank 36 , which abuts against the rotating cushion bank 36 to suppress further rotation of the cushion bank 36 .

[0217] According to this form, the posture of the cushion pad bank 36 is further stabilized by the presence of the protruding portion 33a. At this time, the cushion pad bank 36 can occupy one side portion of the seat cushion pad 32 in a non-rotated state ( Fig.13 The state of the cushion pad bank 36 shown by the dotted line), and the contact state of the extension portion 33a abutting against the seat back 33 ( Fig.13 The state of the cushion pad embankment 36 shown by the solid line) Fig.13 Turn in the direction of the double arrow.

[0218] The extension 33a of the seat back 33 is responsible for limiting the rotatable angle range of the cushion embankment 36, but since the seat back 33 can be tilted until the rearward position, the rotatable angle range of the cushion embankment 36 also changes according to the tilted state of the seat back 33. For example, in the normal state of the seat arrangement, the cushion embankment 36 can rotate within an angle range of about 0° to 90°, but in the rearward position of the seat arrangement, the cushion embankment 36 can rotate within an angle range of about 0° to 180°.

[0219] The curtain 310 will be described in more detail below.

[0220] like Fig.14 As shown, the seat cushion 32 has an engaging portion 312, the seat back 33 has an engaging portion 313, and in addition to these two engaging portions 312, 313, an engaging portion 316 is also provided on the ceiling of the vehicle. Fig.14 Although not shown in the figure, a further engaging portion may be provided on the wall of the vehicle, for example, a quarter trim box on the wall side.

[0221] By providing a plurality of engagement portions at a plurality of locations in the vehicle and engaging them with a part of the curtain 310 in this manner, the posture of the curtain 310 is stabilized. For example, the curtain 310 can be used in a tent shape.

[0222] At this time, it is preferable that the curtain storage section 38 can store a curtain having a foldable frame 315 as the curtain 310 .

[0223] According to this form, the shape of the curtain 310 when deployed is stabilized by having the frame 315. However, if the curtain 310 has the frame 315, the volume of the curtain 310 when stored will increase, but since the frame 315 can be folded and can be stored in the curtain storage section 38, it will not affect the space saving in the vehicle brought by the curtain storage section.

[0224] The above is the description of the third embodiment of the present invention.

[0225] In the above description of the embodiment, the vehicle seat 31 for the rear seat of the vehicle is described, but the "rear seat" mentioned here simply refers to the seat on the rear side of the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can also be applied to seats other than the last seat.

[0226] [Fourth Embodiment]

[0227] Fig.15 1 is a diagram schematically showing the structure of a vehicle seat 41 according to an embodiment of the present invention from the front. Fig.16 It is roughly shown from the side Fig.15 FIG. 4 is a diagram showing the structure of a vehicle seat 41, Fig.17 Schematically shows the effect of this embodiment. Figures 15 to 17 In order to simplify the description, some structures are omitted from the illustration.

[0228] The vehicle seat 41 is a vehicle seat for a rear seat of a vehicle, and mainly includes a seat cushion 42 , a seat back 43 , a reclining mechanism 44 , a lifting mechanism 45 , and a sensor 46 .

[0229] The seat cushion 42 is a portion of the vehicle seat 41 located in front of the rear wheel housing 411 of the vehicle and supporting the buttocks and thighs of the occupant. The seat cushion 42 includes a cushion body 421 including a member having a cushioning property that absorbs the impact when the occupant sits down, and a cushion frame 422 including a rigid member that supports the cushion body 421 from the inside. On the other hand, similarly to the seat cushion 42, the seat back 43 includes a seat back body 431 including a member having a cushioning property that absorbs the impact, and a seat back frame 432 including a rigid member that supports the seat back body 431 from the inside.

[0230] The seat back 43 is a portion of the vehicle seat 41 that supports the back of the occupant. The seat back 43 is connected to the rear end portion of the seat cushion 42 via a reclining mechanism 44 described later.

[0231] The reclining mechanism 44 is a portion of the vehicle seat 41 that causes the seat back 43 to tilt relative to the seat cushion 42. The reclining mechanism 44 also plays a role in connecting the seat back 43 to the rear end of the seat cushion 42.

[0232] The lifting mechanism 45 is capable of moving the seat cushion 42 in the vertical direction ( Fig.15 and Fig.16 The lifting mechanism 45 is a part of the vehicle seat 41 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 44 toward the rearward tilting state of the seat back 43, the seat cushion 42 is raised in the vertical direction in conjunction with the tilting of the seat back 43 toward the rearward tilting state so that the seat back 43 is located above the rear wheel cover 411 to avoid interference with the rear wheel cover 411. More specifically, the lifting mechanism 45 is Fig.16 The central linkage is connected to the movement of the seat back 43 rotating in the direction A in the figure and approaching the rearward tilt state, so that the seat cushion 42 and the seat back 43 connected to the rear end of the seat cushion 42 rise together in the direction B in the figure.

[0233] In addition, in this specification, the so-called "rearward tilt state" refers to a state in which the seat back 43 is close to being roughly horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 43 after the seat back 43 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 43 is rotated to a predetermined angle relative to the seat cushion 42. That is, if Fig.16The seat back 43 shown in the solid line is only slightly tilted backward, and the seat cushion 42 does not start to rise. Fig.16 The seat cushion 42 is raised in the direction B while the seat back 43 indicated by the solid line in the figure is in the upward posture (that is, without the seat back 43 being tilted).

[0234] Here, the lifting mechanism 45 is connected to the cushion frame 422 in the seat cushion 42, and the cushion frame 422 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 42. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 43 is rotated to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0235] In this embodiment, the lifting mechanism 45 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0236] Fig.17 In the figure, the dotted line indicates the seat arrangement before the seat back 43 is folded backward, in other words, the vehicle seat 41 when the seat back 43 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 414. Furthermore, the vehicle seat 41 when the seat arrangement is folded backward is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 41 indicated by the dotted line and higher than the rear wheel housing 411. The seat cushion 42 rises in conjunction with the movement of the seat back 43 approaching the folded backward state, thereby enabling the vehicle to move in an upright position. Fig.17 As shown in FIG. 1 , the seat back 43 is connected to the seat cushion 42 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 411. In this case, unlike Patent Document 1, the seat back 43 is completely flat as a whole. As a result, Fig.17 As shown, the vehicle rear space 47 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0237] Here, it is preferable that a plurality of vehicle seats 41 are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting and lowering mechanism portions 45 independently lifts and lowers the seat cushion 42 to be lifted and lowered.

[0238] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0239] The vehicle seat 41 of the present embodiment further includes two sensors 46 provided on the respective seating surfaces 42a and 43a of the seat cushion 42 and the seat back 43. In addition, in the vehicle seat 41 of the present embodiment, the case where the sensors 46 are provided on the seating surfaces 42a and 43a of either the seat cushion 42 or the seat back 43 is shown, but it is not limited thereto, and the sensors 46 may be provided on either the seat cushion 42 or the seat back 43. The sensors 46 are electrically connected in order to transmit the detected information as an electrical signal. Moreover, as described above, the vehicle seat 41 of the present embodiment is provided in parallel in a plurality along the vehicle width direction. Therefore, it is preferred that the sensors 46 are provided on each vehicle seat 41. By increasing the number of sensors 46 in the vehicle, the detection performance of detecting the presence of the user 48 is improved, and the occurrence of detection errors, etc. can be suppressed.

[0240] The sensor 46 of the vehicle seat 41 of this embodiment functions as a human detection sensor after the seat back 43 is deformed into a seat arrangement in a rearward state. On the other hand, when the seat back 43 is deformed into a seat arrangement in an inverted state, it functions as a biosensor to obtain biological information of the seated occupant.

[0241] Human detection sensors can detect human motion (activity) or heat, for example. Infrared human detection sensors are known in the past. Infrared human detection sensors can detect infrared rays caused by heat (body temperature) radiated from the human body, and can recognize the presence of a person based on the amount of infrared radiation or changes in the amount of radiation.

[0242] The sensor 46 that functions as a human detection sensor can convert the presence of a user 48 such as a child playing in the deformed rear space 47 of the vehicle into an electrical signal, and transmit it to the outside of the vehicle seat 41 via a sending component such as a detection information sending unit 410 (details will be described later).

[0243] The human detection sensor can detect objects other than humans as long as they can radiate infrared rays, for example, it can also detect the activities of small animals such as dogs and cats. Therefore, in this application specification, these small animals can be included in the "user". That is, the human detection sensor can also be used to detect the presence of a dog or the like located in the rear space 47 of the vehicle.

[0244] Furthermore, the human sensing sensor is not limited to the infrared human sensing sensor described above, and any human sensing sensor that detects the presence of the user 48 using various sensors known in the past may be used. For example, a contact sensing sensor that detects a change in resistance caused by the user 48 in direct contact with the seat surface 42a of the seat cushion 42, or a pressure sensing sensor that detects a load applied to the seat surface 42a, etc. may be used. The contact sensing sensor or the pressure sensing sensor must be in direct contact with a part of the user's 48's arm or foot, etc., for detection, and thus the user 48 can be reliably detected when the user 48 is lying on the seat cushion 42 and the seat back 43.

[0245] However, when the user 48 deviates from the installation position of the sensor 46 installed on the seat surface 42a, etc., it is difficult to detect the presence of the user 48. Therefore, it is appropriate to use a non-contact infrared human detection sensor. Alternatively, an infrared human detection sensor and a plurality of sensors such as a contact detection sensor or a pressure detection sensor may be used in combination. In this way, the detection performance of the user 8 can be improved.

[0246] On the other hand, the biosensor is a conventionally known biosensor, for example, a contact-type biosensor that measures the amount of electricity or resistance flowing between a pair of electrodes, or the amount of change thereof, or a non-contact-type biosensor that can irradiate light, electromagnetic waves, etc. from a light emitting diode (LED) irradiation portion toward the skin and detect the light reflected by the blood vessels and emitted to the outside of the skin, etc. Other details about the structure and function of the biosensor that functions as a biosensor to obtain biological information are omitted.

[0247] As described above, the vehicle seat 41 of the present embodiment includes a sensor 46 having two functions. Therefore, it is possible to arbitrarily switch whether the sensor 46 functions as a human detection sensor or as a biosensor. This function switching can also be performed manually, for example. That is, the passenger or user 48 can switch the operation switch (not shown) for function switching provided on the vehicle seat 41 to select the information to be acquired or detected.

[0248] On the other hand, the function of the sensor 46 can be automatically switched according to the seat arrangement of the seat back 43. That is, when the seat back 43 is in the "inverted state" (normal seat arrangement), it can function as a biosensor for acquiring biological information such as blood flow and heart rate of the occupant when sitting in the rear seat, and when the seat back 43 is tilted backward by the reclining mechanism 44 and deformed into a completely flat state of the "rearward reclined state", it can function as a human detection sensor for detecting the presence of the user 48. The function switching of the sensor 46 can be automatically performed by detecting the deformed state of the seat arrangement of the seat back 43 using a well-known position sensor or the like.

[0249] Furthermore, the vehicle seat 41 includes a detection information transmitting unit 10 capable of transmitting detection information 49 related to the presence or absence of a user 48 utilizing the vehicle rear space 47 detected by the sensor 46 as described above, to the inside or outside of the vehicle.

[0250] The detection information transmitting unit 410 has a function of transmitting the detection information 49 as an electrical signal to a predetermined transmission destination outside the vehicle seat 41 when the presence of the user 48 is detected by the sensor 46. The detection information transmitting unit 410 may be built into the seat cushion 42 or the seat back 43 where the sensor 46 is provided, or may be electrically connected to the sensor 46 and provided outside the seat cushion 42 or the seat back 43.

[0251] Furthermore, as a sending destination of the probe information 49 sent from the probe information sending unit 410, for example, a vehicle information device terminal 412 which is provided on a console panel in front of a driver's seat of a vehicle and generally functions as a car navigation system can be cited, and the content of the probe information 49 can be displayed on a terminal screen 412a of the vehicle information device terminal 412. At this time, the probe information sending unit 410 and the vehicle information device terminal 412 are connected via a wire for sending the probe information 49.

[0252] Furthermore, the detection information sending unit 410 may send the detection information 49 to a mobile information terminal 413 such as a smartphone via a wireless communication line 415, and the detection information 49 content may be displayed on a terminal screen 413a of the mobile information terminal 413. In this case, an electric communication line such as Wireless Fidelity (Wi-Fi (registered trademark)) or the Internet may be used as the wireless communication line 415. The use of Wi-Fi, which is mainly used for sending and receiving information at short distances, is particularly suitable.

[0253] The vehicle seat 41 includes the detection information transmitting unit 410, for example, when the guardian is resting on the driver's seat or the front passenger seat in the vehicle, and the child is playing or lying in the completely flat rear space 47 of the vehicle, the presence of the child (user 48) can be monitored using the terminal screen 412a of the vehicle information equipment terminal 412 provided in front of the driver's seat. Therefore, even if the child opens the rear side door of the vehicle and runs out of the vehicle by himself, this situation can be quickly recognized, so that the child can be prevented from falling into a dangerous situation in advance. That is, the vehicle seat 41 of this embodiment has a "babysitting function" for looking after the child in the rear space 47 of the vehicle. At this time, when a change in the situation occurs, such as the presence of the user 48 in the rear space 47 of the vehicle cannot be detected, the guardian can also be notified by the vehicle information equipment terminal 412 through an alarm or the like.

[0254] Furthermore, the vehicle seat 41 of the present embodiment can transmit detection information 49 to a mobile information terminal 413 such as a smart phone held by a guardian through a detection information transmitting unit 410. Therefore, even if the guardian has to temporarily leave the vehicle to go to the toilet during a break at a service area, for example, and leaves the child in the vehicle, the guardian can confirm the child in the vehicle rear space 47 from outside the vehicle. As a result, the guardian can go to the toilet with peace of mind.

[0255] Furthermore, even if the child runs out of the vehicle, the child can quickly recognize this situation and quickly return to the parking position of the vehicle. Thus, the child can be prevented from falling into a dangerous situation in advance. Furthermore, the possibility of the child getting lost is reduced, and the possibility of the child being involved in crimes such as false claims can also be reduced. At this time, in the same way, when a change in the situation occurs, such as the presence of the user 48 in the rear space 47 of the vehicle cannot be detected, the guardian can be notified by the mobile information terminal 413 through an alarm or the like.

[0256] The sensor 46 that functions as a human detection sensor is not intended for children as in the above example, but is intended for the user 48. For example, it can be used to prevent an elderly person with dementia who is resting in the rear space 47 of the vehicle from running out of the vehicle and wandering around. Furthermore, it can be confirmed whether there are infants or children left in the rear space 47 of the vehicle on a hot summer day, thereby preventing accidents from happening.

[0257] Furthermore, as described above, pets such as dogs and cats, and other small animals other than humans can be detected as "users". Thus, even if a dog or the like is left in the rear space 47 of the vehicle to play after the seat arrangement is transformed into a completely flat state, and the dog or the like escapes from the vehicle through the gap between the window or the door, this situation can be immediately grasped. Thus, the possibility of quickly discovering a small animal such as a dog that has escaped from the vehicle increases.

[0258] The above is the description of the fourth embodiment of the present invention.

[0259] In the above description of the embodiment, the vehicle seat 41 for the rear seat of the vehicle is described, but the "rear seat" mentioned here simply refers to the seat located at the rear side behind the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can of course also be applied to seats other than the last seat.

[0260] [Fifth Embodiment]

[0261] Fig.18 1 is a diagram schematically showing the structure of a vehicle seat 51 according to an embodiment of the present invention from the front. Fig.19 It is roughly shown from the side Fig.18 FIG. 5 is a diagram showing the structure of a vehicle seat 51, Fig. 20 is a diagram schematically showing the effect of this embodiment, Fig.21 FIG. 1 is a diagram schematically showing an air passage groove portion. Fig. 22 2 is a diagram schematically showing a cross section of a seat back. Figures 18 to 22 In order to simplify the description, some structures are omitted from the illustration.

[0262] The vehicle seat 51 is a vehicle seat for a rear seat of a vehicle, and mainly includes a seat cushion 52 , a seat back 53 , a reclining mechanism 54 , a lifting mechanism 55 , and an air conditioning mechanism 56 .

[0263] The seat cushion 52 is a portion of the vehicle seat 51 that is located in front of the rear wheel housing 511 of the vehicle and supports the buttocks and thighs of the occupant. The seat cushion 52 includes a cushion body 521 that includes a member with a cushioning property that absorbs the impact when the occupant sits down, and a cushion frame 522 that includes a rigid member and supports the cushion body 521 from the inside. Similar to the seat cushion 52, the seat back 53 includes a seat back body 531 that includes a member with a cushioning property that absorbs the impact, and a seat back frame 532 that includes a rigid member and supports the seat back body 531 from the inside.

[0264] The seat back 53 is a portion of the vehicle seat 51 that supports the back of the occupant. The seat back 53 is connected to the rear end portion of the seat cushion 52 via a reclining mechanism portion 54 described later.

[0265] The reclining mechanism 54 is a portion of the vehicle seat 51 that causes the seat back 53 to tilt relative to the seat cushion 52. The reclining mechanism 54 also plays a role in connecting the seat back 53 to the rear end of the seat cushion 52.

[0266] The lifting mechanism 55 is capable of moving the seat cushion 52 in the vertical direction ( Fig.18 and Fig.19 The lifting mechanism 55 is a part of the vehicle seat 51 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 54 toward the rearward tilting state of the seat back 53, the seat cushion 52 is raised in the vertical direction in conjunction with the tilting of the seat back 53 toward the rearward tilting state so that the seat back 53 is located above the rear wheel housing 511 to avoid interference with the rear wheel housing 511. More specifically, the lifting mechanism 55 is Fig.19 The central linkage is connected to the movement of the seat back 53 rotating in the direction A in the figure and approaching the rearward tilt state, so that the seat cushion 52 and the seat back 53 connected to the rear end of the seat cushion 52 rise together in the direction B in the figure.

[0267] In addition, in this specification, the so-called "rearward tilt state" refers to a state in which the seat back 53 is close to being roughly horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 53 after the seat back 53 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 53 is rotated to a predetermined angle relative to the seat cushion 52. That is, if Fig.19 The seat back 53 shown in the solid line is only slightly tilted backward, and the seat cushion 52 does not start to rise. Fig.19 The seat cushion 52 is raised in the direction B while the seat back 53 indicated by the solid line in the figure is in the upward posture (that is, without the seat back 53 being tilted).

[0268] Here, the lifting mechanism 55 is connected to the cushion frame 522 in the seat cushion 52, and the cushion frame 522 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 52. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 53 rotates to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0269] In this embodiment, the lifting mechanism 55 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0270] Fig. 20 In the figure, the dotted line indicates the seat arrangement before the seat back 53 is folded backward, in other words, the vehicle seat 51 when the seat back 53 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 514. Furthermore, the vehicle seat 1 in the rearward folded state is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 51 indicated by the dotted line and higher than the rear wheel housing 511. The seat cushion 52 rises in conjunction with the movement of the seat back 53 approaching the rearward folded state, thereby enabling the vehicle to move in a reverse direction. Fig. 20 As shown in FIG. 1 , the seat back 53 is connected to the seat cushion 52 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 511. In this case, unlike Patent Document 1, the seat back 53 is completely flat as a whole. As a result, Fig. 20 As shown, the vehicle rear space 57 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0271] Here, it is preferable that a plurality of vehicle seats 51 are independently arranged in parallel along the vehicle width direction, and that the plurality of lifting and lowering mechanism portions 55 lift and lower the seat cushion 52 to be lifted and lowered independently of each other.

[0272] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0273] The vehicle seat 51 of this embodiment includes: a plurality of vents 59 opened on the sitting surface 53a of the seat back 53; an air passage 512 provided inside the seat back 53, communicating with the vents 59 and allowing air-conditioning wind 510 to flow; and an air-conditioning mechanism 56 communicating with the air passage 512 and having an air-conditioning fan 513 for generating air-conditioning wind 510 in the air passage 512. One end 512a of the air passage 512 is connected to the air-conditioning fan 513, and the other end 512b of the air passage 512 is connected to the plurality of vents 59, respectively. Fig.18 In the figure, for simplicity of illustration, a circular large-sized hole is shown as the ventilation hole 59, but the present invention is not limited thereto, and any hole may be used as long as the size of the conditioned air 510 described later can be ventilated.

[0274] The vehicle seat 51 of this embodiment includes the air conditioning mechanism 56 inside the seat back 53 as described above, thereby enabling ventilation (exchange of air) by the air conditioning wind 510 in the vehicle rear space 57 after the seat back 53 is deformed to the rearwardly reclined state.

[0275] Here, the air conditioning fan 513 of the air conditioning mechanism 56 is provided inside the seat back 53, and in particular, is provided near the corner 533 of the seat back frame 532 which is the frame of the seat back 53. The seat back frame 532 supports the load applied by the seated passenger in the rear seat. In addition, in order to support the load applied from above by the user 58 sitting on the seat back 53 in the above-mentioned completely flat state, a metal material (rigid material) having high rigidity is included.

[0276] Furthermore, if Fig.18 As shown, the corner 533 corresponds to the bending part of the substantially U-shaped seat back frame 532, and is a part corresponding to the position above the right shoulder of the seated passenger. In addition, at this position, a locking mechanism (not shown) of the reclining mechanism part 54 for tilting the seat back 53 is generally provided.

[0277] Therefore, in the seat back frame 532, the corner 533 and its vicinity are particularly rigid parts, and because they are located above the right shoulder of the seated occupant, they are less likely to come into contact with the seated occupant. Therefore, the air conditioning fan 513 can be stably installed. Furthermore, even when the air conditioning fan 513 is operated, there is no risk of vibration or the like caused by the rotation of the fan, and the generation of vibration sound (noise) caused by the rotation of the fan can be suppressed.

[0278] Furthermore, the seating comfort of the occupants will not be impaired, and even after the seat cushion 52 and the seat back 53 are deformed into a completely flat seat arrangement, even if the user 58 lies down, the possibility of the user's 58 head, arms, elbows or feet, etc. contacting the air-conditioning fan 513 is low.

[0279] In addition, Fig.18 In the above description, the vehicle seat 51 disposed on the right side of the rear seat is used as an example, but it is not limited to this, and the vehicle seat disposed on the left side of the rear seat can also be applied in the same manner. In this case, an air conditioning fan (not shown) of the air conditioning mechanism can be provided at a position corresponding to the left shoulder information position of the seated passenger. In this way, the same effect as described above can be obtained.

[0280] Furthermore, in the vehicle seat 51 of the present embodiment, the air conditioning fan 513 of the air conditioning mechanism 56 may be either a so-called intake fan or an exhaust fan. Fig. 20As shown, by using an exhaust fan as the air conditioning fan 513, it is possible to generate air conditioning wind 510 flowing from the air conditioning fan 513 toward the vent 59 in the air passage 512 as the air conditioning fan 513 is operated. That is, the air (in-vehicle air 515) introduced into the vehicle rear space 57 can be sucked in from the air inlet (not shown) provided in the air conditioning fan 513, and the air conditioning wind 510 flowing from one end 512a of the air passage to the other end 512b of the air passage can be generated, and the air conditioning wind 510 can be discharged from the vent 59. Thus, the vehicle rear space 57 can be ventilated or ventilated by the air conditioning wind 510 sent to the vehicle rear space 57. Furthermore, the air (air conditioning wind 510) can be circulated in the vehicle rear space 57.

[0281] On the other hand, by using an intake fan as the air conditioning fan 513, the air in the vehicle rear space 57 (vehicle air 515) can be sucked from the vent hole 59 provided on the seat surface 53a of the seat back 53 as the air conditioning fan 513 is operated, so that the air conditioning wind 510 flowing from the other end 512b of the air passage to the one end 512a of the air passage (the air conditioning fan 513) is generated in the air passage 512, and the air conditioning wind 510 is discharged from the exhaust port (not shown) of the air conditioning fan 513. Thus, the vehicle rear space 57 can be ventilated or ventilated by the air conditioning wind 510 sent to the vehicle rear space 57 in the same manner as described above. Furthermore, the air (the air conditioning wind 510) can be circulated in the vehicle rear space 57.

[0282] The flow direction of the air-conditioning wind 510 can also be arbitrarily determined by switching the running direction (exhaust direction, intake direction) of the air-conditioning fan 513. In addition, the air volume of the air-conditioning wind 510 generated or the temperature of the air-conditioning wind 510 can also be arbitrarily adjusted. These functions related to air conditioning are well-known, so the description is omitted here.

[0283] Moreover, if Fig.18 As shown, the vent holes 59 in the air conditioning mechanism 56 are opened on the seat surface 53a of the seat back 53 and are provided in plurality. Here, as described above, the seat back 53 is composed of a seat back frame 532 formed inside and a seat back body 531 covering the seat back frame 532. Furthermore, a seat cover covering all or part of the seat back body 531 may also be included. Furthermore, the vent holes 59 are not completely open, and it is sufficient that the air conditioning wind 510 can flow as long as the opening is covered by a mesh material or the like.

[0284] like Fig.18As shown, the air passage 512 of the vehicle seat 51 is connected to the air conditioning fan 513 provided near the corner 533, in other words, provided at the oblique upper position of the seat back 53, and is formed toward the lower side along the long side direction of the seat back 53. A portion is provided on the back side portion 518 of the seat back 53 that is recessed in a substantially rectangular shape from the back side portion 518, and is provided along the long side direction of the seat back 53 (equivalent to Fig.21 A plurality of groove-shaped air passage groove portions 516 are formed in the upper and lower directions of the paper surface. Furthermore, the air passage groove portions 516 adjacent to each other are connected to each other at their respective upper ends.

[0285] Furthermore, each air passage groove 516 extends to the other end 512b of the air passage and is connected to the vent hole 59. Moreover, the air passage groove 516 branches in the middle and also extends to the other end 512b of the air passage and is connected to the vent hole 59 (see Fig.21 ). Furthermore, the back surface portion 518 of the seat back 53 has a groove covering portion 517 for covering a substantially rectangular recessed portion. Fig. 22 As shown, the groove covering portion 517 can be embedded in the recessed portion of the back surface portion 518 .

[0286] Thus, an air passage 512 surrounded by the air passage groove 516 and the groove covering portion 517 is formed inside the seat back 53 (seat back body 531 ), and the air conditioning wind 510 generated by the air conditioning fan 513 can flow through the air passage 512 .

[0287] Here, the groove covering portion 517 may be made of, for example, a felt-like cloth member and fitted so as to cover the recessed portion provided in the back surface portion 518 of the seat back 53. Thus, the air passage 512 can be easily formed inside the seat back 53.

[0288] By using the air conditioning mechanism 56 having the above structure, after the seat arrangement is transformed into a completely flat state, the user 58 using the vehicle rear space 57 can ventilate the vehicle rear space 57 and circulate the conditioned air 510 as the intake air or exhaust air generated by the air conditioning fan 513. Through these ventilation, air replacement, or circulation functions, the air in the vehicle rear space 57 can be easily replaced. Therefore, the user 58 can improve the use comfort.

[0289] In addition, by removing the groove cover 517 from the back portion 518 of the seat back 53, the air passage groove 516 can be easily accessed. Therefore, even if the air conditioning mechanism 56 including the air conditioning fan 513 has a bad condition, or if the air conditioning wind 510 cannot be stably circulated due to accumulation of garbage or dust in the air passage 512 due to some factors, the groove cover 517 can be temporarily removed to quickly remove the factors of the bad condition. Then, the groove cover 517 is inserted into the back portion 518 again, so that the air conditioning mechanism 56 can be used. As a result, maintenance work can be easily performed, and the comfort of the user 58 is not impaired.

[0290] The above is the description of the fifth embodiment of the present invention.

[0291] In the above description of the embodiment, the vehicle seat 51 for the rear seat of the vehicle is particularly described, but the "rear seat" referred to here simply refers to the seat located at the rear side behind the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can of course also be applied to seats other than the last seat.

[0292] [Sixth Embodiment]

[0293] Fig.23 1 is a diagram schematically showing the structure of a vehicle seat 61 according to an embodiment of the present invention from the front. Fig.24 It is roughly shown from the side Fig.23 FIG. 6 is a diagram showing the structure of a vehicle seat 61, Fig.25 1 is a diagram schematically showing the structure of the back side of the seat back. Fig.26 It is a diagram schematically showing the effects of this embodiment.

[0294] The vehicle seat 61 is a vehicle seat for a rear seat of a vehicle, and mainly includes a seat cushion 62 , a seat back 63 , a reclining mechanism 64 , a lifting mechanism 65 , and a seat back support 66 .

[0295] The seat cushion 62 is a portion of the vehicle seat 61 that is located in front of the rear wheel housing 611 of the vehicle and supports the buttocks and thighs of the occupant. The seat cushion 62 includes a cushion body 621 that includes a member with a cushioning property that absorbs the impact when the occupant sits down, and a cushion frame 622 that includes a rigid member and supports the cushion body 621 from the inside. Similar to the seat cushion 62, the seat back 63 includes a seat back body 631 that includes a member with a cushioning property that absorbs the impact, and a seat back frame 632 that includes a rigid member and supports the seat back body 631 from the inside.

[0296] The seat back 63 is a portion of the vehicle seat 61 that supports the back of the occupant. The seat back 63 is connected to the rear end portion of the seat cushion 62 via a reclining mechanism portion 64 described later.

[0297] The reclining mechanism portion 64 is a portion of the vehicle seat 61 that causes the seat back 63 to tilt relative to the seat cushion 62. The reclining mechanism portion 64 also plays a role in connecting the seat back 63 to the rear end portion of the seat cushion 62.

[0298] The lifting mechanism 65 is capable of moving the seat cushion 62 in the vertical direction ( Fig.23 and Fig.24 The lifting mechanism 65 is a part of the vehicle seat 61 that is raised and lowered in the vertical direction. When the seat arrangement is deformed by the reclining mechanism 64 toward the rearward tilting state of the seat back 63, the seat cushion 62 is raised in the vertical direction in conjunction with the tilting of the seat back 63 toward the rearward tilting state so that the seat back 63 is located above the rear wheel housing 611 to avoid interference with the rear wheel housing 611. More specifically, the lifting mechanism 65 is Fig.24 The central linkage is connected to the seat back 63 rotating in the direction A in the figure and approaching the rearward tilting state, so that the seat cushion 62 and the seat back 63 connected to the rear end of the seat cushion 62 rise together in the direction B in the figure.

[0299] In addition, in this specification, the so-called "rearward tilt state" refers to the state in which the seat back 63 is close to being roughly horizontal relative to the vertical direction. Moreover, in this specification, the so-called "coordinated with the tilting toward the rearward tilt state" refers to the tilting of the seat back 63 after the seat back 63 is tilted to a predetermined level and approaches the rearward tilt state, in other words, after the seat back 63 is rotated to a predetermined angle relative to the seat cushion 62. That is, if Fig.24 The seat back 63 shown in the solid line is only slightly tilted backward, and the seat cushion 62 does not start to rise. Fig.24 The seat cushion 62 is raised in the direction B while the seat back 63 indicated by the solid line in FIG. 3 is in the upward posture (that is, without the seat back 3 being tilted).

[0300] Here, the lifting mechanism 65 is connected to the cushion frame 622 in the seat cushion 62, and the cushion frame 622 is pushed in the direction B in the figure by a gear mechanism (not shown) that transmits the rotational driving force of the motor or the like, thereby realizing the upward movement of the seat cushion 62. As such a gear mechanism, a mechanism of a conventional seat height adjustment device described in Japanese Patent Laid-Open No. 2006-182039 or Japanese Patent Laid-Open No. 2001-138780 can be used. At this time, as the linkage mechanism, for example, the following mechanism can be considered, that is, when the seat back 3 is rotated to more than the specified angle, the switch of the rotational driving source such as the motor is turned on, and its rotational driving force is transmitted to the gear mechanism.

[0301] In this embodiment, the lifting mechanism 65 is a lifting mechanism using such a gear mechanism, but in the present invention, a lifting mechanism using other lifting mechanisms may be used. For example, a lifting mechanism using hydraulic pressure or air pressure may be used.

[0302] Fig.25 In the figure, the dotted line indicates the seat arrangement before the seat back 63 is folded backward, in other words, the vehicle seat 61 when the seat back 63 is in the "inverted state" seat arrangement (or "normal seat arrangement") relative to the vehicle floor surface 614. Furthermore, the vehicle seat 61 in the rearward folded state is indicated by a solid line at a position higher in the vertical direction than the position of the vehicle seat 61 indicated by the dotted line and higher than the rear wheel housing 611. The seat cushion 62 rises in conjunction with the movement of the seat back 63 approaching the rearward folded state, thereby enabling the vehicle to move in an upright position. Fig.26 As shown in FIG. 1 , the seat back 63 is connected to the seat cushion 62 in a straight line in the horizontal direction without any step difference while avoiding interference with the rear wheel housing 611. In this case, unlike Patent Document 1, the seat back 63 is completely flat as a whole. As a result, Fig.25 As shown, the vehicle rear space 67 in the vehicle can be used as widely as possible to the extent that the occupant can lie down in the vehicle, thereby realizing a vehicle seat with high usability.

[0303] Here, it is preferable that a plurality of vehicle seats 61 are independently arranged in parallel along the vehicle width direction, and each of the plurality of lifting and lowering mechanism portions 65 independently lifts and lowers the seat cushion 62 to be lifted and lowered.

[0304] In the preferred embodiment, in a normal seat arrangement, by relatively changing the height of adjacent rear seats, the sight heights of people with different body shapes (e.g., parents and children) can be aligned. Furthermore, when a junior seat is placed on the rear seat, the height of the junior seat can be directly adjusted to a desired position without the need to prepare a cushion or the like to increase the height of the junior seat.

[0305] like Fig.25 As shown, the seat back support portion 66 of the vehicle seat 61 of the present embodiment includes a rotation shaft portion 69 mounted on a seat back base frame 619 of a back surface portion 618 of a seat back 63, and a pair of support legs 610 rotatably mounted on the rotation shaft portion 69, and is formed to be deformable into a folded state F (see FIG. 1 ) in which the support legs 610 are folded along the seat back base frame 619. Fig.24 ), and the expanded state E in which the support leg 610 is expanded from the seat back base frame 619 (refer to Fig.26 Thus, when the seat back 63 is set to the rearwardly folded state, the pair of support legs 610 in the folded state F during normal driving can be transformed into the expanded state E in which they are expanded from the back surface portion 618 in a substantially vertical direction.

[0306] To provide further specific details, the seat back support portion 66 includes: a rotating shaft portion 69, which is installed on a seat back base frame 619 as a plate-like frame material, and the seat back base frame 619 is provided on the back side portion 618 of the seat back 63; and a supporting leg portion 610, which has a pair of main supporting legs 612a, 612b which are rotatably installed with the rotating shaft portion 69 and one end of which abuts against the vehicle floor surface 614, and an auxiliary supporting leg 613 which connects the pair of main supporting legs 612a, 612b and is approximately in the shape of an H.

[0307] With the seat back support portion 66 of this structure, the rotation shaft portion 69 is connected to one end of each of the pair of main support legs 612a and 612b, and can rotate with the connection portion as the rotation axis. As a result, the support leg portion 610 can be deformed between a folded state F in which the main support legs 612a and 612b are folded in the long-side direction along the back portion 618 of the seat back 63 and an unfolded state E in which the main support legs 612a and 612b are turned over from the back portion 618. In addition, a rotation restricting portion (not shown) is provided, which restricts the main support legs 612a and 612b from further rotating from the unfolded state E. As a result, the support leg portion 610 can be deformed between 0° and about 90° relative to the back portion 618. Furthermore, the structure of the rotation restricting portion is not particularly limited, and may include a structure such as a stopper member that abuts against the main support legs 612a and 612b to restrict rotation of more than 90°.

[0308] Furthermore, in the expanded state E, the other ends of the pair of main support legs 612a and 612b, in other words, the ends on the opposite side to the ends connected to the rotation shaft 69, are in contact with the vehicle floor surface 614 (see Fig.26 ).

[0309] As a result, the seat back 63 after the seat arrangement is deformed into a completely flat state can be supported from the lower side (the back side 618 side) by the support leg 610, thereby improving the load resistance performance of the seat back 63 in the flat state. Without the structure of the seat back support portion 66 in this embodiment, the seat back 63 must be cantilevered and supported by the seat cushion 62 fixed to the vehicle floor surface 614. In particular, when a strong load is applied to the front end of the seat back 63, such as a heavy object, the load may not be supported. As a result, the use of the vehicle rear space 67 may be partially limited.

[0310] Furthermore, the seat back support portion 66 in the present embodiment includes a support leg fixing portion 615 that fixes the support leg 610 in the folded state F. Specifically, the vehicle seat 61 in the present embodiment uses the following component, which is mounted on the back portion 618 of the seat back 63 and applies force to the auxiliary support leg 613 toward the back portion 618 to lock it. As a result, the support leg 610 is restricted from being deployed from the folded state F. As a result, when the seat back 63 is in an inverted state (normal seat arrangement), for example, when the vehicle is traveling, the support leg 610 is restricted from freely rotating. As a result, the generation of vibration or noise associated with the rotation can be suppressed, and the user comfort is not impaired.

[0311] Furthermore, the seat back support portion 66 further includes a support leg lock release mechanism portion 616, which is linked to the tilting of the seat back 63 to enable the support leg 610 to be deformed from the folded state F to the unfolded state E, and from the unfolded state E to the folded state F. Thus, in conjunction with the release of the leaning lock mechanism portion 620 that makes the seat back 63 lean by the leaning mechanism portion 64, the fixation of the support leg 610 by the support leg fixing portion 615 can be released.

[0312] A connection cable 617 is interposed between the leaning lock mechanism 620 and the support leg fixing portion 615 , whereby unlocking of the leaning lock mechanism 620 can be transmitted to the support leg fixing portion 615 .

[0313] Thus, when the seat back 63 is in an inverted state, the support leg 610 can maintain the folded state F, and further, can be linked to the action of releasing the lock of the seat back 63 by the reclining mechanism 64 and tilting it toward the rearward state, so that the support leg 610 can be deformed into the unfolded state E.

[0314] The above is the description of the sixth embodiment of the present invention.

[0315] In the above description of the embodiment, the vehicle seat 61 for the rear seat of the vehicle is particularly described, but the "rear seat" referred to here simply refers to the seat located at the rear side behind the driver's seat. Therefore, in the case of a vehicle with a plurality of seats arranged along the traveling direction of the vehicle (for example, in the case of a long and narrow vehicle such as a bus), the present invention can of course also be applied to seats other than the last seat.

[0316] Industrial Applicability

[0317] The present invention is useful for realizing a vehicle seat with high usability.

[0318] Description of Figure Numbers

[0319] 11: Vehicle seats

[0320] 12: Seat cushion

[0321] 13: Seat back

[0322] 14: Rely on the institutional department

[0323] 15: Lifting mechanism

[0324] 16: Armrests

[0325] 16a: Armrest storage slot

[0326] 17: Vehicle rear space

[0327] 18: Curtain storage

[0328] 19: Accessories Installation Department

[0329] 110: Power supply port

[0330] 111: Rear wheel housing

[0331] 114: Vehicle floor

[0332] 121: Buffer pad body

[0333] 122: Buffer frame

[0334] 131: Seat back body

[0335] 132: Seat back frame

[0336] 21: Vehicle seats

[0337] 22: Seat cushion

[0338] 23: Seat back

[0339] 23a: Extension

[0340] 24: Rely on the Institutional Department

[0341] 25: Lifting mechanism

[0342] 26: Buffer pad embankment

[0343] 27: Vehicle rear space

[0344] 29: Bank rotation mechanism

[0345] 29a: Card stop pin

[0346] 29b: Strip

[0347] 211: Rear wheel housing

[0348] 214: Vehicle floor

[0349] 221: Buffer pad body

[0350] 222: Buffer frame

[0351] 231: Seat back body

[0352] 232: Seat back frame

[0353] 31: Vehicle seats

[0354] 32: Seat cushion

[0355] 33: Seat back

[0356] 33a: Extension

[0357] 34: Relying on the Institutional Department

[0358] 35: Lifting mechanism

[0359] 36: Buffer pad embankment

[0360] 37: Vehicle rear space

[0361] 38: Curtain storage

[0362] 39: Embankment rotation mechanism

[0363] 39a: Card stop pin

[0364] 39b: Strip

[0365] 311: Rear wheel cover

[0366] 312: snap-fit ​​part

[0367] 313: snap-fit ​​part

[0368] 314: Vehicle floor

[0369] 315: Skeleton

[0370] 316: snap-fit ​​part

[0371] 321: Buffer pad body

[0372] 322: Buffer frame

[0373] 331: Seat back body

[0374] 332: Seat back frame

[0375] 41: Vehicle seats

[0376] 42: Seat cushion

[0377] 42a, 43a: Seating surface

[0378] 43: Seat back

[0379] 44: Relying on the Institutional Department

[0380] 45: Lifting mechanism

[0381] 46: Sensor

[0382] 47: Vehicle rear space

[0383] 48: Exploiter

[0384] 49: Detection information

[0385] 410: Detection information sending unit

[0386] 411: Rear wheel cover

[0387] 412: Information equipment terminal

[0388] 412a, 413a: Terminal screen

[0389] 413: Mobile information terminal

[0390] 414: Vehicle floor

[0391] 415: Wireless communication line

[0392] 421: Buffer pad body

[0393] 422: Buffer frame

[0394] 431: Seat back body

[0395] 432: Seat back frame

[0396] 51: Vehicle seats

[0397] 52: Seat cushion

[0398] 52a, 53a: Sitting surface

[0399] 53: Seat back

[0400] 54: Relying on the Institutional Department

[0401] 55: Lifting mechanism

[0402] 56: Air conditioning mechanism

[0403] 57: Vehicle rear space

[0404] 58: Exploiter

[0405] 59: Ventilation hole

[0406] 510: Air conditioning

[0407] 511: Rear wheel housing

[0408] 512: Air passage

[0409] 512a: One end of the air passage

[0410] 512b: The other end of the air passage

[0411] 513: Air conditioning fan

[0412] 514: Vehicle floor

[0413] 515: In-car air

[0414] 516: Air passage groove

[0415] 517: Groove covering part

[0416] 518: Back

[0417] 521: Buffer pad body

[0418] 522: Buffer frame

[0419] 531: Seat back body

[0420] 532: Seat back frame

[0421] 533: Corner

[0422] 61: Vehicle seats

[0423] 62: Seat cushion

[0424] 62a, 63a: Seating surface

[0425] 63: Seat back

[0426] 64: Relying on the Institutional Department

[0427] 65: Lifting mechanism

[0428] 66: Seat back support

[0429] 67: Vehicle rear space

[0430] 68: Exploiter

[0431] 69: Rotating shaft

[0432] 610: Supporting feet

[0433] 611: Rear wheel cover

[0434] 612a, 612b: Main support legs

[0435] 613: Auxiliary support feet

[0436] 614: Vehicle floor

[0437] 615: Support foot fixing part

[0438] 616: Deformation linkage mechanism

[0439] 617: Link Cable

[0440] 618: Back

[0441] 619: Seat back base frame

[0442] 620: Locking mechanism

[0443] 621: Buffer pad body

[0444] 622: Buffer frame

[0445] 631: Seat back body

[0446] 632: Seat back frame

[0447] E: Expanded form

[0448] F: Folded form.

Claims

1. A vehicle seat, characterized in that: A vehicle seat for a rear seat of a vehicle, the vehicle seat comprising: a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant; a seat back supporting the back of the occupant; leaning on a mechanism portion to cause the seat back to tilt relative to the seat cushion; and The lifting mechanism part can lift the seat cushion in a vertical direction relative to the vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism part toward the rearwardly tilted state of the seat back, the lifting mechanism part raises the seat cushion in the vertical direction in conjunction with the tilting movement of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing. The seat back has an armrest on one side portion of the seat back for placing the occupant's arms when supporting the occupant's back.

2. The vehicle seat according to claim 1, characterized in that: A plurality of the vehicle seats are independently arranged in parallel along a vehicle width direction, and each of the plurality of lifting and lowering mechanism portions independently lifts and lowers the seat cushion pads that are to be lifted and lowered.

3. The vehicle seat according to claim 1 or 2, characterized in that: The armrest is rotatable with the end of the armrest as a rotation axis between an upright setting state and a non-upright setting state, wherein the upright setting state is a state of protruding in a direction intersecting with the surface of the seat back that is spread out toward the back of the occupant, and the non-upright setting state is a state of extending along the surface of the seat back. The seat back further includes a groove-shaped armrest storage groove portion capable of storing the armrest in the non-erect arrangement state.

4. The vehicle seat according to claim 3, characterized in that: The armrest includes a curtain storage portion capable of storing a curtain, and the curtain functions as a partition curtain or a sunshade curtain inside the vehicle.

5. The vehicle seat according to claim 3, characterized in that: The armrest has an accessory mounting portion at a front end portion for mounting a predetermined accessory.

6. The vehicle seat according to claim 3, characterized in that: The armrest storage groove has a power supply port at the bottom thereof for supplying power to the electronic device.

7. A vehicle seat, characterized in that: A vehicle seat for a rear seat of a vehicle, the vehicle seat comprising: a seat cushion, located forward of the rear wheel housing of the vehicle, to support the buttocks and thighs of the occupant; a seat back supporting the back of the occupant; leaning on a mechanism portion to cause the seat back to tilt relative to the seat cushion; and The lifting mechanism part can lift the seat cushion in a vertical direction relative to the vehicle floor surface, and when the seat arrangement is deformed by the reclining mechanism part toward the rearwardly tilted state of the seat back, the lifting mechanism part raises the seat cushion in the vertical direction in conjunction with the tilting movement of the seat back toward the rearwardly tilted state so that the seat back is located above the rear wheel housing to avoid interference with the rear wheel housing. The seat cushion has a cushion bank portion occupying one side portion of the seat cushion and being rotatable separably from a remaining portion of the seat cushion excluding the cushion bank portion with a rear end portion of the cushion bank portion as a rotation axis.

8. The vehicle seat according to claim 7, characterized in that: A plurality of the vehicle seats are independently arranged in parallel along a vehicle width direction, and each of the plurality of lifting and lowering mechanism portions independently lifts and lowers the seat cushion pads that are to be lifted and lowered.

9. The vehicle seat according to claim 7 or 8, characterized in that: The seat cushion pad further has a rotational position fixing mechanism that fixes a rotational position when the cushion pad bank portion is rotated to be separated from the remaining portion of the seat cushion pad.

10. The vehicle seat according to claim 9, characterized in that: The seat back has a protruding portion on a side of the seat back located in the rotation direction of the cushion pad bank portion, which abuts against the rotating cushion pad bank portion to inhibit further rotation of the cushion pad bank portion. The cushion embankment is rotatable between a non-rotation state in which it occupies one of the side portions of the seat cushion while being aligned with the remaining portion of the seat cushion, and an abutment state in which it abuts against the extension of the seat back.

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