Seat for vehicle

Abstract

To provide a seat for a vehicle which enables a seat component to be suitably arranged on a seat body.SOLUTION: A seat S1 for a vehicle includes a seat cushion 1, a seat back 2, and a seat frame supporting the seat cushion and the seat back. The seat cushion 1 and the seat back 2 are detachably mounted on the seat frame. The seat cushion 1 includes a support plate 10 mounted on the seat frame, a pad material 1a mounted on the support plate, and a skin material covering the support plate and the pad material. An air bag device 80 having an air bag 81 capable of swelling is mounted on the support plate 10.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat including a seat cushion, a seat back, and a seat frame that supports the seat cushion and the seat back. [Background technology]

[0002] 2. Description of the Related Art Conventionally, vehicle seats are known in which a seat cushion and a seat back are detachably attached to a seat frame (see, for example, Patent Document 1). The seat described in Patent Document 1 further includes a locking member that locks the seat cushion (seat back) in a state where it is attached to the seat frame, and a lock operation member that switches the locking member between a locked state and an unlocked state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-82976 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a vehicle seat such as that disclosed in Patent Document 1, when assembling seat components such as various sensors, a ventilation device, or an airbag device to the seat body, it is required to appropriately arrange these seat components. For example, when the seat cushion is attached to the seat frame, it is necessary to devise a way to prevent the seat components from interfering with other components.

[0005] An object of the present invention is to provide a vehicle seat that allows seat components to be suitably positioned when they are assembled to a seat main body. [Means for solving the problem]

[0006] The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat comprising a seat cushion, a seat back, and a seat frame supporting the seat cushion and the seat back, wherein at least one of the seat cushion and the seat back is attached so as to be detachable from the seat frame, and the at least one of the seat cushion and the seat back comprises a support plate attached to the seat frame, a padding material placed on the support plate, and a cover material covering the support plate and the padding material, and an airbag device having an inflatable airbag is attached to the support plate. With the above-described configuration, it is possible to realize a vehicle seat that allows the seat component (airbag) to be suitably positioned when the seat component is assembled to the seat main body. More specifically, the vehicle seat includes an airbag device having an inflatable airbag. The airbag (airbag device) is attached to a support plate of a seat cushion (seat back) of the vehicle seat. Therefore, the airbag can be favorably supported by the support plate. Also, by attaching the airbag to the support plate instead of the seat frame, the seat frame can be made more versatile.

[0007] In this case, it is preferable that the airbag device has the airbag and an inflator that supplies gas to the inside of the airbag, and that a housing recess for housing the inflator is formed on the surface of the support plate. With the above-mentioned configuration, the inflator can be easily positioned when it is attached to the surface of the support plate.

[0008] In this case, the support plate has a plate body that supports the padding material, and a plate engaging portion that is provided on the back surface of the portion of the plate body where the accommodating recess is formed and protrudes toward the seat frame, and it is preferable that the plate engaging portion be removably engaged with an engaged portion provided on the surface of the seat frame. With the above-described configuration, the support plate can be easily positioned when attaching it to the seat frame.

[0009] In this case, it is preferable that an airbag accommodating recess for accommodating the airbag is formed on the rear surface of the padding material, and that a part of the airbag accommodating recess and a part of the accommodating recess are disposed so as to face each other. With the above-described configuration, the airbag and the inflator can be disposed closer to each other.

[0010] In this case, the seat cushion is removably attached to the seat frame, the seat frame has left and right side frames spaced apart in the seat width direction, and a submarine suppression member connecting front portions of the left and right side frames, the inflator is positioned forward of the submarine suppression member, and the airbag extends rearward from the inflator and is positioned so as to straddle the submarine suppression member in the fore-and-aft direction of the seat. With the above-described configuration, the inflator, the airbag, and the submarine suppression member can be compactly arranged in the front portion of the vehicle seat.

[0011] In this case, a duct is provided in the seat frame to allow air blown out from the blower to pass through, and when the support plate is attached to the seat frame, the airbag and a portion of the duct are preferably positioned in the same position in the attachment direction of the support plate. With the above-described configuration, the airbag and the duct can be arranged compactly inside the vehicle seat without increasing the thickness of the seat cushion (seat back).

[0012] In this case, the seat frame has left and right side frames spaced apart in the seat width direction, and a support frame connecting front portions of the left and right side frames, the blower being supported by the support frame, and when the support plate is attached to the seat frame, the airbag is positioned in a position overlapping with the support frame. With the above-mentioned configuration, the airbag can be supported more stably by the support plate and the support frame, and the airbag and the blower can be arranged in a compact manner.

[0013] In this case, the seat cushion is removably attached to the seat frame, and the airbag device is attached to the seat cushion and has the airbag and an inflator that supplies gas to the inside of the airbag, and it is preferable that the inflator and the blower are arranged at the same position in the fore-and-aft direction of the seat. With the above-described configuration, the inflator and the blower can be arranged in a compact manner, and the vehicle seat can be prevented from becoming large in size in the front-to-rear direction of the seat. Effect of the Invention

[0014] According to the present invention, a vehicle seat can be realized in which a seat component (airbag) can be suitably arranged on the seat body. Specifically, the airbag can be suitably supported by the support plate. In addition, by assembling the airbag to the support plate instead of the seat frame, the seat frame can be made versatile. Furthermore, according to the present invention, when the inflator is attached to the surface of the support plate, the inflator can be easily positioned. Furthermore, according to the present invention, the support plate can be easily positioned when attaching it to the seat frame. Furthermore, according to the present invention, the airbag and the inflator can be disposed closer to each other. Furthermore, according to the present invention, the inflator, the airbag, and the submarine suppression member can be arranged compactly in the front portion of the vehicle seat. Furthermore, according to the present invention, the airbag and the duct can be arranged compactly inside the vehicle seat without increasing the thickness of the seat cushion (seat back). Furthermore, according to the present invention, the airbag can be supported more stably by the support plate and the support frame, and the airbag and the blower can be arranged in a compact manner. Furthermore, according to the present invention, the inflator and the blower can be arranged compactly, and an increase in size of the vehicle seat in the front-to-rear direction of the seat can be suppressed. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment; [Diagram 2] FIG. 2 is an exploded perspective view of a seat cushion and a cushion frame. [Diagram 3] FIG. 4 is an exploded perspective view of the seat cushion and the cushion frame as viewed from a different angle. [Figure 4] FIG. 2 is an assembly diagram of a seat cushion and a cushion frame. [Diagram 5] FIG. 2 is a perspective view of a locking device (locking member, lock operation member) for the seat cushion. [Figure 6] FIG. [Figure 7] FIG. 4 is an exploded perspective view of the seat back and the back frame as viewed from a different angle. [Figure 8] FIG. 2 is an assembly diagram of a seat back and a back frame. [Figure 9] FIG. 2 is a top view of the seat cushion and the cushion frame. [Figure 10] FIG. 4 is a bottom view of the seat cushion and the cushion frame. [Figure 11] 10 is a cross-sectional view taken along the line AA in FIG. 9, showing an exploded cross-sectional view of a seat cushion and a cushion frame. [Figure 12]FIG. 2 is a cross-sectional view of a seat cushion and a cushion frame. [Figure 13] 10 is a cross-sectional view taken along the line BB in FIG. 9, showing an exploded cross-sectional view of the seat cushion and the cushion frame. [Figure 14] FIG. 2 is a cross-sectional view of a seat cushion and a cushion frame. [Figure 15] FIG. 2 is a front view of the seat cushion, showing the handle portion. [Figure 16] FIG. 11 is an exploded cross-sectional view of a seat cushion and a cushion frame according to a second embodiment. [Figure 17] FIG. 11 is an exploded cross-sectional view of a seat cushion and a cushion frame according to a third embodiment. [Figure 18] FIG. 13 is an exploded cross-sectional view of a seat cushion and a cushion frame according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The present embodiment relates to a "vehicle seat" that enables a seat component (airbag device) to be suitably positioned when the seat component is assembled to a seat main body. In addition, the side of the vehicle seat where a seat occupant sits relative to the seat back (headrest) is the front side (seat front side).

[0017] First Embodiment First, a vehicle seat S1 of the first embodiment will be described with reference to FIGS. 1, the vehicle seat S1 is a vehicle seat, for example, a front seat arranged at the front position of the vehicle. Note that the vehicle seat S1 may be a middle seat or a rear seat.

[0018] As shown in FIG. 1, the vehicle seat S1 includes a seat cushion 1, a seat back 2, and a seat frame (cushion frame 30, back frame 40) that supports the seat cushion 1 and the seat back 2. As shown in Figs. 2 to 8, the seat cushion 1 and the seat back 2 are detachably attached to the cushion frame 30 and the back frame 40, respectively. In other words, the vehicle seat S1 is a seat in which the seat cushion 1 and the seat back 2 can be appropriately removed from the seat frame and replaced.

[0019] As shown in Figures 1, 9 to 12, the vehicle seat S1 further includes detection sensors 50, 55 attached inside the seat cushion 1, a control device 60 attached to the cushion frame 30, a blower device 70, an airbag device 80 attached inside the seat cushion 1, and a vibration motor 90. The detection sensors 50, 55, the control device 60, the blower device 70, the airbag device 80, and the vibration motor 90 may be attached to the seat back 2 or the back frame 40, respectively.

[0020] In addition, the vehicle seat S1 may further include a slide rail device that supports the seat cushion 1 and seat back 2 (hereinafter also referred to as the seat body) so that they can move back and forth relative to the vehicle floor, a height link device that connects the seat body to the vehicle floor so that it can be raised and lowered, and a reclining device that connects the seat back 2 to the seat cushion 1 so that it can be rotated.

[0021] As shown in Figures 1 to 5, the seat cushion 1 is a seating portion that supports a seated person (occupant) from below, and includes a support plate 10 that forms the skeleton, a padding material 1a that is placed on the support plate 10, and a cover material 1b that covers the support plate 10 and the padding material 1a. The support plate 10, the padding material 1a and the covering material 1b are integrated together. The support plate 10 is, for example, a plate made of a resin material (a resin plate), but may be a metal support plate. 1 and 6 to 8, the seat back 2 is a backrest portion that supports a seated occupant from behind, and includes a back support plate 20 that serves as a framework, a pad material 2a, and a cover material 2b. The back support plate 20, the pad material 2a, and the cover material 2b are integrated together.

[0022] <<Seat cushion>> The support plate 10 is a member that is detachably attached to the cushion frame 30 in the up-down direction, as shown in FIGS. The support plate 10 includes a plate body 11 that supports the padding material 1a from below, and left and right plate protrusions 12 that protrude downward from the rear surface of the plate body 11 at the rear portion.

[0023] The plate body 11 is a plate body that is long in the front-rear direction of the seat. On the rear surface of the front portion of the plate body 11, left and right frame attachment / detachment portions 13 protruding downward from the plate body 11 are provided. The plate protrusions 12 are disposed on the left and right sides and extend in the front-rear direction of the seat. The left and right plate protrusions 12 are disposed on the inner side of the left and right frame attachment / detachment portions 13 in the seat width direction. A concave frame attachment portion 14 is formed at the lower end of the front portion of the plate protruding portion 12. Also, a U-shaped frame clamping portion 15 is formed on the rear surface of the rear end portion of the plate protruding portion 12.

[0024] The frame attachment / detachment parts 13 are, for example, attachment / detachment hooks, and are arranged on the left and right sides. The frame attachment / detachment parts 13 are attached to a locking device 37 (locking member 37a) provided on the upper surface of the cushion frame 30. The frame attachment parts 14 are, for example, attachment recesses, and are arranged on the left and right sides. The frame attachment parts 14 are attached to the cushion frame 30 (the first connecting frame 33) so as to be detachable in the up and down direction. The frame clamping portions 15 are disposed on the left and right sides, and are attached to the cushion frame 30 (second connecting frame 34) so ​​as to be detachable in the front-rear direction.

[0025] For example, when assembling the seat cushion 1 (support plate 10) to the cushion frame 30, first, the left and right frame clamping portions 15 are clamped by the second connecting frame 34 as shown in Figures 3 and 4. Then, the left and right frame mounting portions 14 are attached to the first connecting frame 33. Then, as shown in Figs. 3 and 5, the left and right frame attachment / detachment parts 13 are assembled to the left and right locking members 47a, and the frame attachment / detachment parts 13 are locked by the locking members 37a. This allows the seat cushion 1 to be easily assembled to the upper surface of the cushion frame 30.

[0026] As described later, a first detection sensor 50 and a vibration motor 90 are attached to the front surface of the padding material 1a. A second detection sensor 55 is attached to the rear surface of the padding material 1a. An airbag device 80 is attached to the surface of the support plate 10.

[0027] As shown in Figures 1 to 5, the cushion frame 30 is made of a rectangular frame-like body and includes left and right side frames 31 arranged at intervals in the seat width direction, a support frame 32 connecting the front portions (front ends) of each side frame 31, and a first connecting frame 33 and a second connecting frame 34 connecting the rear portions of each side frame 31. The cushion frame 30 also includes a submarine prevention member 35 that connects the front portions of the side frames 31 and is positioned slightly rearward of the support frame 32. The first connecting frame 33 is disposed slightly forward of the second connecting frame 34. The first connecting frame 33 and the second connecting frame 34 are connected by a bracket 36 (a plate-shaped bracket) that is long in the front-rear direction of the seat.

[0028] As shown in Figs. 2 and 5, a locking device 37 for attaching the support plate 10 (frame attachment / detachment portion 13) is attached to the support frame 32. As shown in FIG. 5, the locking device 37 has left and right locking members 37a for attaching the left and right frame attachment / detachment portions 13, a plate-shaped connecting member 37b for connecting the left and right locking members 37a, and a lock operation member 37c provided in the center of the connecting member 37b.

[0029] The locking member 37a is a member that locks the support plate 10 in a state in which it is attached to the cushion frame 30, and is switchable between a "locked state" and an "unlocked state." The locking member 37a is disposed so as to partially protrude from the upper surface of the cushion frame 30 (support frame 32). The lock operation member 37c is an operating lever operated by the occupant and is connected to the left and right lock members 37a via a cable (not shown). When operated by the occupant, the lock operation member 37c can switch the lock member 37a between a "locked state" and an "unlocked state." The lock operation member 37c is disposed so as to protrude downward from the rear surface of the support frame 32. This makes it easy for an occupant to operate the lock operation member 37c.

[0030] The first connecting frame 33 is detachably attached to the frame attachment portion 14 in the vertical direction. The second connecting frame 34 is detachably attached to the frame clamping portion 15 in the front-rear direction. The submarine suppression member 35 is a member that suppresses the submarine phenomenon in which an occupant (a person seated in the seat) sinks when the vehicle receives an external shock.

[0031] As described later, an air blower 70 is attached to the support frame 32 of the cushion frame 30. A control device 60 is attached to the surface of the bracket .

[0032] <<Seat back>> As shown in FIGS. 6 to 8, the back support plate 20 is a member that is detachably attached to the back frame 40 in the front-rear direction. The back support plate 20 includes a plate body 21 that supports the padding 2a from behind. The plate body 21 is a plate body that is long in the vertical direction. The plate body 21 has, on the rear surface of the lower portion thereof, left and right frame attachment / detachment portions 22 which protrude rearward from the plate body 21. The plate body 21 has, on the rear surface of the upper portion thereof, left and right frame attachment portions 23 formed in a convex shape protruding rearward from the plate body 21 . A hook-shaped frame gripping portion 24 is provided on the back surface of the upper end portion of the plate body 21.

[0033] The frame attachment / detachment parts 22 are, for example, attachment / detachment hooks, and are arranged on the left and right sides. The frame attachment / detachment parts 22 are attached to a locking device 48 (locking member 48a) provided on the front surface of the back frame 40. The frame attachment parts 23 are, for example, attachment protrusions, and are arranged on the left and right sides. The frame attachment parts 23 are attached to the back frame 40 (the connecting recesses 46) so as to be detachable in the front-rear direction. The frame gripping portion 24 is detachably attached to the back frame 40 (connecting striker 47) in the front-rear direction.

[0034] For example, when assembling the seat back 2 (back support plate 20) to the back frame 40, first, the frame gripping portion 24 is gripped by the connecting striker 47 as shown in Figures 6 and 7. Then, the left and right frame mounting portions 23 are attached to the left and right connecting recesses 46. Then, as shown in FIGS. 7 and 8, the left and right frame attachment / detachment parts 22 are attached to the left and right locking members 48a, and the frame attachment part 23 is locked by the locking members 48a. This allows the seat back 2 to be easily assembled to the front surface of the back frame 40.

[0035] A first detection sensor and a vibration motor may be attached to the front surface of the pad material 2a, similarly to the seat cushion 1. A second detection sensor may be attached to the rear surface of the pad material 2a. A side airbag device may be attached to the surface of the back support plate 20.

[0036] As shown in Figures 6 to 8, the back frame 40 is made of a rectangular frame-like body and includes left and right back side frames 41, an upper frame 42 connecting the upper ends of each back side frame 41, a lower frame 43 connecting the lower ends of each back side frame 41, and a connecting frame 44 connecting the upper portions of each back side frame. The back frame 40 further includes a support frame 45 made of resin that is attached to the front surfaces of the frames 41 to 44.

[0037] A connecting recess 46 for attaching the frame attachment portion 23 (frame attachment protrusion) is formed in the center portion of the support frame 45. A connecting striker 47 for attaching the frame gripper 24 is provided at the upper end of the support frame 45 . As shown in FIGS. 7 and 8, a locking device 48 for attaching the back support plate 20 (frame attachment portion 23) is attached to the lower frame 43. The locking device 48 has left and right locking members 48a for attaching the left and right frame attachment / detachment sections 22, a connecting member 48b for connecting the left and right locking members 48a, and a lock operating member 48c for switching the locked state of the locking members 48a.

[0038] As with the cushion frame 30, it is preferable that a blower and a control device are attached to the back frame 40.

[0039] <<Seat components>> Next, the seat cushion 1 (support plate 10), the detection sensors 50, 55 provided on the cushion frame 30, the control device 60, the blower device 70, the airbag device 80, and the vibration motor 90 will be described with reference to Figs. The seat back 2 (back support plate 20), the detection sensor provided on the back frame 40, the control device, the air blower, the airbag device, and the vibration motor have the same structure as those of the seat cushion 1, and therefore description thereof will be omitted.

[0040] FIG. 9 is a top view of the seat cushion 1 (the padding 1a) and the cushion frame 30. FIG. On the surface of the padding material 1a, there are formed first skin hanging grooves 1c arranged on the left and right sides in the width direction of the seat and extending in the front-to-rear direction of the seat, as well as second skin hanging grooves 1d and third skin hanging grooves 1e extending in the width direction of the seat and connecting the left and right first skin hanging grooves 1c. An electric wire passage hole 1f is formed in the surface of the padding material 1a at a portion rearward of the third skin hanging groove 1e. A plurality of air passage holes 1g are formed on the surface of the padding 1a in a portion forward of the second skin hanging groove 1d and a portion between the second skin hanging groove 1d and the third skin hanging groove 1e. As shown in Figs. 9 and 13, an air passage 1h is formed on the back surface of the padding 1a so as to communicate with the plurality of air passage holes 1g.

[0041] A motor accommodating recess 1i for accommodating a vibration motor 90 is formed on the left and right side portions of the surface of the padding material 1a. A first detection sensor 50 is attached to the rear portion of the surface of the padding material 1a.

[0042] FIG. 11 is a cross-sectional view taken along the line AA in FIG. 9, and is an exploded cross-sectional view of the seat cushion 1 and the cushion frame 30. As shown in FIG. An airbag accommodating recess 1j for accommodating an airbag 81 is formed on the rear surface of the padding 1a. A sensor accommodating recess 1k for accommodating a second detection sensor 55 is formed on the rear surface of the padding 1a at a portion rearward of the airbag accommodating recess 1j.

[0043] <<Detection sensors, control devices>> As shown in FIGS. 9 to 11, the first detection sensor 50 is a film-type pressure sensor, and is electrically connected to the control device 60. As shown in FIGS. The first detection sensor 50 transmits a detection signal to the control device 60 when it detects that an occupant is seated in the seat. The first detection sensor 50 has a plurality of sensor detection units 51 that detect the seating pressure of a seated occupant, and a transmission path 52 for outputting detection signals of the sensor detection units 51. The sensor detection unit 51 is a pressure-sensitive switch that is adhered to the conductive sheet. The transmission path 52 is formed by adhering an electric wire onto a conductive sheet. The transmission path 52 extends from the sensor detection portion 51 to the rear of the seat and is connected to a first electric wire 53. The first electric wire 53 passes through the electric wire passing hole 1f, extends downward, and is connected to the first connector 54.

[0044] As shown in FIGS. 10 to 12, the first connector 54 is a connection component (connection portion) that connects the first detection sensor 50 and the control device 60, and is attached to the seat cushion 1 (support plate 10) side. The first connector 54 is connected to a first connector receiving portion 62 on the cushion frame 30 (control device 60) side. The first connector 54 is attached to the rear surface of the support plate 10 by a connector fastening portion 17 (fastening clip) provided on the rear surface of the support plate 10. The first connector 54 is provided so as to be exposed on the rear surface side of the support plate 10, and is connected to a first connector receiving portion 62 in the seat front-rear direction.

[0045] As shown in FIGS. 9 and 11, the second detection sensor 55 is a switch-type pressure sensor, and is electrically connected to the control device 60. The second detection sensor 55 transmits a detection signal to the control device 60 when it detects that an occupant is seated. The second detection sensor 55 is connected to a second electric wire 56 . The second electric wire 56 passes through an electric wire passage hole (not shown), extends forward, and is connected to the second connector 57 .

[0046] As shown in FIGS. 10 to 12, the second connector 57 is a connection part that connects the second detection sensor 55 and the control device 60, and is attached to the seat cushion 1 (support plate 10) side. The second connector 57 is connected to a second connector receiving portion 64 on the cushion frame 30 (control device 60) side. The second connector 57 is attached to the rear surface of the support plate 10 through a connector attachment hole 16 formed in the rear surface of the support plate 10 . The second connector 57 is provided so as to be exposed on the rear surface side of the support plate 10, is disposed so as not to protrude from the rear surface of the support plate, and is connected to a second connectorized part 64 in the up-down direction.

[0047] As shown in Figs. 11 and 12, the control device 60 is a device that performs overall electrical control of the vehicle seat S1, and is, for example, an engine control unit (ECU). The control device 60 is connected to the detection sensors 50, 55, the air blower device 70, the airbag device 80, the vibration motor 90 and other movable devices via an in-vehicle network. The control device 60 determines whether an occupant is seated based on detection signals output from the detection sensors 50 and 55, for example, and controls the operation of the blower device 70 and the vibration motor 90. Specifically, the control device 60 is a computer equipped with a CPU (processor) as a data arithmetic and control processing device, ROM and RAM as storage devices, a HDD, and a communication interface for sending and receiving information data via the in-vehicle network.

[0048] The control device 60 is attached to the upper surface of the bracket 36 of the cushion frame 30 and is connected to a first electric wire 61 and a second electric wire 63 . The first electric wire 61 extends rearward from the control device 60, and a first connectorized portion 62 is connected to an extending end portion of the first electric wire 61. The first connectorized portion 62 is connected to the first connector 54 in the seat front-rear direction. The second electric wire 63 extends forward from the control device 60, and a second connectorized part 64 is connected to an extending end part of the second electric wire 63. The second connectorized part 64 is connected to the second connector 57 in the up-down direction.

[0049] In the above configuration, as shown in Figs. 10 to 12, when the support plate 10 is attached to the cushion frame 30, the first connector 54, the second connector 57 and the cushion frame 30 are arranged so as not to overlap each other. Specifically, the first connector 54 and the second connector 57 are disposed in the gaps between the left and right plate protruding portions 12 of the cushion frame 30. This allows the first connector 54 and the first connected part 62 to be suitably connected while avoiding interference with the cushion frame 30. Also, the second connector 57 and the second connected part 64 can be suitably connected. Furthermore, the left and right plate protrusions 12 can protect the first connector 54 and the second connector 57 from the outside.

[0050] In the above configuration, the first connector 54, the second connector 57 and the control device 60 are disposed between the left and right plate protrusions 12, as shown in FIGS. The control device 60 is disposed between the first connector 54 and the second connector 57 in the seat front-rear direction. By doing so, the first connector 54, the second connector 57, and the control device 60 can be arranged compactly.

[0051] In the above configuration, as shown in FIGS. 11 and 12, the first detection sensor 50, the second detection sensor 55, and the control device 60 are arranged at positions that overlap with each other in the seat front-rear direction and the seat width direction. This allows the detection sensors 50, 55 and the control device 60 to be located close to each other, making it easier to connect the detection sensors 50, 55 and the control device 60.

[0052] <<Blower>> As shown in Figures 9, 10, 13, and 14, the air blower 70 is attached to the cushion frame 30 and includes a blower 71 that blows out air, ducts 72 and 73 that are connected to the blower 71 and allow the air to pass through, and an outlet 74 that is connected to the ducts 72 and 73 and blows out air toward a seated occupant. The duct has a first duct portion 72 and a second duct portion 73 that is detachably connected to the first duct portion 72. The blower 71 and the first duct portion 72 are supported by the cushion frame 30, and the second duct portion 73 and the air outlet 74 are supported by the seat cushion 1 (support plate 10).

[0053] The blower 71 is attached to the rear surface of the support frame 32 of the cushion frame 30. Preferably, the blower 71 is assembled to the support frame 32 via a bracket. The blower 71 has a blower body 71a, a duct connection portion 71b provided on the upper surface of the blower body 71a, and an electric wire connection portion 71c provided on the rear surface of the blower body 71a.

[0054] The blower 71 (electric wire connection portion 71c) is electrically connected to the control device 60 via a third electric wire 65 as shown in FIG. The third electric wire 65 extends so as not to protrude from the cushion frame 30 toward the support plate 10 (upward) in a side view of the cushion frame 30. That is, the third electric wire 65 extends along the side frame 31 in the front-rear direction.

[0055] As shown in Figs. 13 and 14, the first duct portion 72 and the second duct portion 73 are ventilation pipes through which the air blown out from the blower 71 passes, and are made of, for example, a polyethylene material. The cushion frame 30 (support frame 32) has a first duct insertion hole 38 formed therethrough in the thickness direction, through which the first duct portion 72 is inserted. Further, the seat cushion 1 (support plate 10) is formed with a second duct insertion hole 18 that penetrates the seat cushion 1 (support plate 10) in the thickness direction and through which the second duct portion 73 is inserted.

[0056] The first duct portion 72 is connected to the blower 71 (duct connection portion 71b), and passes through the first duct insertion hole 38 to extend upward. The first duct portion 72 is attached in a state where its entire periphery is enclosed in the first duct insertion hole 38 . The second duct portion 73 is attached to the second duct insertion hole 18 and extends downward. The upper end of the second duct portion 73 serves as an air outlet 74, which communicates with an air passage 1h formed in the padding material 1a.

[0057] As shown in FIG. 13, the first duct portion 72 is attached to the cushion frame 30 so as not to protrude from the cushion frame 30 towards the support plate 10. The second duct portion 73 is attached to the support plate 10 so as to protrude from the support plate 10 towards the cushion frame 30 side. 14, when the support plate 10 is attached to the cushion frame 30, the protruding portion of the second duct portion 73 is connected to the inside of the first duct portion 72. As shown in FIG.

[0058] With the above-mentioned configuration, air sent out from blower 71 passes through first duct portion 72 and second duct portion 73 and is blown out from outlet 74. The air blown out from the air outlet 74 passes through an air passage 1h and is sent out to a seated occupant through a plurality of air passage holes 1g.

[0059] In the above configuration, as shown in FIG. 10, the blower 71 and the lock operation member 37c (lock device 37) are disposed at different positions in the seat front-rear direction and the seat width direction. This can prevent interference between the blower 71 and the lock operation member 37c (lock device 37).

[0060] In the above configuration, as shown in FIG. 14, the ducts 72, 73 and the plurality of air passage holes 1g formed in the padding material 1a are configured not to overlap with each other in a top view. This allows the air blown out from the ducts 72 and 73 to be guided to the plurality of air passage holes 1g. That is, the air can be uniformly sent out from the plurality of air passage holes 1g toward the seated occupant.

[0061] <<Airbag device>> As shown in Figs. 9 to 12, an airbag device 80 is a device for mitigating the impact applied to an occupant (seat occupant) when a vehicle receives an external impact. The airbag device 80 is a device that suppresses the submarine phenomenon in which a seated occupant sinks when an impact is received from the outside, for example. The airbag device 80 includes an inflatable airbag 81 and an inflator 82 that supplies gas to the inside of the airbag 81 .

[0062] The airbag 81 and the inflator 82 are attached inside the seat cushion 1. The airbag 81 is disposed between the support plate 10 and the padding 1a, and is accommodated in an airbag accommodating recess 1j formed on the rear surface of the padding 1a. The inflator 82 is accommodated in an inflator accommodating recess 19 formed in the surface of the support plate 10. The inflator 82 extends along the seat width direction.

[0063] The inflator 82 is connected to the airbag 81 and is also connected to the control device 60 via an electric wire 83 . Specifically, the electric wire 83 extends rearward from the inflator 82 along the surface of the support plate 10 and is connected to the second connector 57 .

[0064] As shown in FIGS. 11 and 12, the inflator 82 is disposed in front of the submarine suppression member 35. The airbag 81 extends rearward from the inflator 82 and is disposed so as to straddle the submarine prevention member 35 in the front-rear direction of the seat.

[0065] As shown in FIG. 11, a plate engaging portion 19A protruding toward the cushion frame 30 is formed on the rear surface of the support plate 10 at a portion where the inflator accommodating recess 19 is formed. The plate engaging portion 19A is detachably engaged with an engaging recess 39 (engaged portion) formed on the surface of the cushion frame 30. Therefore, when attaching the seat cushion 1 (support plate 10) to the cushion frame 30, the support plate 10 can be easily positioned.

[0066] In the above configuration, as shown in Figs. 11 and 12, a part of the airbag-accommodating recess 1j and a part of the inflator-accommodating recess 19 are disposed so as to face each other. By doing so, the airbag 81 and the inflator 82 can be disposed closer to each other.

[0067] In the above configuration, as shown in Figs. 11 and 12, when the support plate 10 is attached to the cushion frame 30, a part of the airbag 81 is disposed at a position overlapping the support frame 32 in a top view. This allows the airbag 81 to be more stably supported by the support plate 10 and the support frame 32. In addition, the airbag 81 can be arranged compactly.

[0068] In the above configuration, as shown in Figs. 13 and 14, when the support plate 10 is attached to the cushion frame 30, the airbag 81 and a part of the duct (second duct portion 73) are disposed at the same height in the up-down direction. This allows the airbag 81 and the duct to be arranged compactly inside the vehicle seat S1 without increasing the thickness of the seat cushion 1.

[0069] In the above configuration, as shown in Figs. 13 and 14, when the support plate 10 is attached to the cushion frame 30, the airbag 81 and the duct (second duct portion 73) are configured not to overlap in the front-rear direction of the seat. This can prevent interference between the airbag 81 and the duct.

[0070] In the above configuration, as shown in Figs. 13 and 14, the inflator 82 and the blower 71 are disposed at positions where they overlap in the front-rear direction of the seat. Further, the inflator 82 and the duct (second duct portion 73) are disposed at a position where they overlap in the seat front-rear direction. This allows the inflator 82, the blower 71, and the duct to be arranged compactly.

[0071] <<Vibration motor>> As shown in FIG. 9, the vibration motor 90 is a device that applies vibration to a seated occupant, and a plurality of vibration motors 90 are arranged inside the seat cushion 1. Specifically, the vibration motor 90 is accommodated in a motor accommodating recess 1i formed on the surface of the pad material 1a. A plurality of vibration motors 90 are provided on the left and right sides, and are disposed outside the detection sensors 50, 55, the control device 60, the blower device 70, and the airbag device 80 in the seat width direction.

[0072] In the above-described configuration, as shown in Figs. 11 and 15, a first handle portion 95 for an occupant to grasp is provided on the rear surface of the front end portion of the support plate 10. As shown in Figs. Further, a second handle portion 96 is provided on the rear surface of the front portion of the support plate 10 at a position rearward of the blower device 70 and forward of the control device 60. The handles 95, 96 may be made of resin or cloth. The handles 95, 96 allow the occupant to easily remove the seat cushion from the cushion frame 30.

[0073] The vehicle seat S1 described above can realize a seat in which the seat components can be suitably arranged when assembling the seat components to the seat main body.

[0074] <Second embodiment> Next, a vehicle seat S2 according to a second embodiment will be described with reference to FIG. It should be noted that a description of the contents that overlap with those of the vehicle seat S1 described above will be omitted. FIG. 16 is an exploded cross-sectional view of the seat cushion 101 and the cushion frame 130 according to the second embodiment.

[0075] In the vehicle seat S2, the main differences are in the configurations of the detection sensor (second detection sensor 155) and the control device 160. The second detection sensor 155 is electrically connected to the control device 160 . The second detection sensor 155 is accommodated in a sensor accommodating recess formed on the back surface of the pad material 101a, and is placed on a mounting recess 110a formed on the front surface of the support plate 110. Therefore, when arranging the second detection sensor 155 on the front surface of the support plate 110, the second detection sensor 155 can be easily positioned. A plate-shaped reinforcing portion 110b is attached to a portion of the rear surface of the support plate 110 that corresponds to the mounting recess 110a. This makes it possible to suppress deformation of the support plate 110, and to suppress the influence of the detection accuracy of the second detection sensor 155 and detection failure.

[0076] When the support plate 110 is attached to the cushion frame 130, the first connector 154, the second connector 157 and the reinforcing portion 110b are configured not to overlap with each other. This makes it possible to suppress interference between the connectors 154, 157 and the reinforcing portion 110b.

[0077] The second detection sensor 155 is connected to a second electric wire 156 . The second electric wire 156 passes through the electric wire passing hole 116 and extends downward to be connected to the second connector 157 . The second connector 157 is engaged with a connector engaging hole 114a formed in a plate protruding portion 112 of the support plate 110 (for example, the right plate protruding portion 112). Second connector 157 is engaged in connector engaging hole 114a and partially protrudes downward from support plate 110. Specifically, second connector 157 is disposed so as to partially overlap frame attachment portion 114 having a concave shape.

[0078] The control device 160 is attached to the upper surface of the bracket 136 of the cushion frame 130 and is connected to the second electric wire 163 . The second electric wire 163 extends forward from the control device 160 through the electric wire passing hole 133 a and is connected to the second connector 164 . The second connectorized part 164 is engaged with a connectorized part engaging hole 133 b formed in the first connecting frame 133 . The second connectorized member 164 partially protrudes upward from the first connecting frame 133 while being locked in the connectorized member locking hole 133b.

[0079] With the above configuration, when the seat cushion 101 (support plate 110) is attached to the cushion frame 130, the second connector 157 and the second connector receiving part 164 can be smoothly connected to each other.

[0080] <Third embodiment> Next, a vehicle seat S3 according to a third embodiment will be described with reference to FIG. It should be noted that the description overlapping with the above-mentioned vehicle seats S1 and S2 will be omitted. FIG. 17 is an exploded cross-sectional view of a seat cushion 201 and a cushion frame 230 according to the third embodiment.

[0081] The vehicle seat S3 differs mainly in the configuration of the detection sensor (second detection sensor 255). The second detection sensor 255 is connected to a second electric wire 256 . The second electric wire 256 passes through an electric wire passage hole (not shown), extends forward, and is connected to a second connector 257 . The second connector 257 is attached to a connector attachment hole 216 formed in the support plate 210 . The second connector 257 is attached to the connector attachment hole 216 in a state where it does not protrude downward from the support plate 210.

[0082] A cover member 210 a is attached to the rear surface of the support plate 210 to cover the second connector 257 attached to the connector attachment hole 216 . The cover member 210a is attached to the support plate 210 so as to be slidable in the front-rear direction. The cover member 210a is switchable between an "open position" and a "closed position" in which the cover member 210a moves forward from a reference position to cover the second connector 257 from below. Therefore, when the detection sensor (second detection sensor 255) is not in use, the connector (second connector 257) can be protected by the cover member 210a.

[0083] <Fourth embodiment> Next, a vehicle seat S4 according to a fourth embodiment will be described with reference to FIG. Incidentally, description of the contents overlapping with those of the above-mentioned vehicle seats S1 to S3 will be omitted. FIG. 18 is an exploded cross-sectional view of a seat cushion 301 and a cushion frame 330 according to the fourth embodiment.

[0084] In the vehicle seat S4, the main differences are the configurations of the detection sensor (second detection sensor 355) and the control device 360. The second detection sensor 355 is connected to a second electric wire 356 . The second electric wire 356 passes through the electric wire passing hole 316 and extends downward to be connected to the second connector 357 . The second connector 357 is a non-contact type connector, and is attached so as to fit along the concave frame attachment portion 314 . The second connector 357 may be attached to the inner surface of the plate protrusion 312 of the support plate 310 , or may be attached to the inside of the plate protrusion 312 .

[0085] The control device 360 ​​is attached to the upper surface of the bracket 336 of the cushion frame 330 and is connected to the second electric wire 363 . The second electric wire 363 extends forward from the control device 360 ​​through the electric wire passing hole 333 a and is connected to the second connector 364 . The second connector 364 is a non-contact type connector, and is engaged with a connector engaging hole 333 b formed in the first connecting frame 333 .

[0086] With the above configuration, the connection operation between the connector (second connector 357) and the connectored part (second connectored part 364) can be easily performed.

[0087] Even with the vehicle seats S2, S3, and S4 described above, it is possible to realize a seat in which the seat components can be suitably arranged when assembling the seat components to the seat main body.

[0088] <Manufacturing method for vehicle seats> Next, a manufacturing method for the vehicle seat S1 will be described with reference to FIGS. In addition, with regard to the manufacturing method of the vehicle seat S1, a description of manufacturing steps other than those described below will be omitted.

[0089] First, the seat cushion 1, the seat back 2, and the seat frame (the cushion frame 30, the back frame 40) are prepared. The seat cushion 1 has a support plate 10 attached to a cushion frame 30, a padding material 1a placed on the support plate 10, and a skin material 1b covering the support plate 10 and the padding material 1a. The seat back 2 is similar.

[0090] Then, an airbag device 80 having an inflatable airbag 81 is attached inside the seat cushion 1. Specifically, the airbag 81 (airbag device 80) is attached to the support plate .

[0091] Then, the seat cushion 1 is attached to the cushion frame 30. Furthermore, the seat back 2 is attached to the back frame 40. The seat cushion 1 and the seat back 2 are detachable from the seat frame. When the seat cushion 1 (support plate 10) is attached to the cushion frame 30, the connectors 54, 57 are configured not to overlap with the cushion frame 30. The same applies to the seat back 2.

[0092] The above manufacturing method makes it possible to realize a vehicle seat in which seat components (detection sensors) can be suitably arranged.

[0093] <Other embodiments> In the above embodiment, as shown in Figs. 2 and 6, the seat cushion 1 and the seat back 2 are detachably attached to the cushion frame 30 and the back frame 40, respectively, but this is not particularly limited. For example, only the seat cushion 1 may be detachably attached to the cushion frame 30. Alternatively, only the seat back 2 may be detachably attached to the back frame .

[0094] In the above embodiment, the vehicle seat S1 includes the detection sensors 50, 55, the control device 60, the blower device 70, the airbag device 80, and the vibration motor 90, but is not particularly limited thereto. For example, the vehicle seat S1 does not necessarily have to include the detection sensors 50, 55, the control device 60, the blower device 70, and the vibration motor 90.

[0095] In the above embodiment, a vehicle seat (automobile seat) was described as a specific example, but without being limited thereto, the seat can be used as a seat in vehicles such as trains, buses, etc., as well as in airplanes, ships, etc.

[0096] In the above embodiment, the vehicle seat according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0097] First Embodiment S1 Vehicle seats (vehicle seats) 1 seat cushion 1a Pad material 1b Skin material 1c First skin hanging groove 1d Second skin hanging groove 1e 3rd skin hanging groove 1f Wire passing hole 1g Air passage hole 1h Air passage 1i Motor housing recess 1j Airbag storage recess 1k Sensor Recess 2 Seat back 2a Pad material 2b Skin material 10 Support plate (cushion support plate) 11 Plate body 12 Plate protrusion 13 Frame attachment / detachment section 14 Frame mounting part 15 Frame clamping part 16 Connector mounting holes (mounting holes) 17 Connector fastening part 18 Second duct insertion hole 19 Inflator housing recess (housing recess) 19A Plate engagement part 20 Back Support Plate 21 Plate body 22 Frame attachment / detachment section 23 Frame mounting part (frame mounting protrusion) 24 Frame gripping part 30 Cushion frame (seat frame) 31 Side frame 32 Support frame 33 First connecting frame 34 Second connecting frame 35 Submarine Restraint Materials 36 Bracket 37 Locking device 37a Locking member 37b Connecting member 37c Lock operation member 38 First duct insertion hole (duct insertion hole) 39 Engagement recess (engaged portion) 40 Back frame (seat frame) 41 Backside Frame 42 Upper Frame 43 Lower Frame 44 Connecting Frame 45 Support Frame 46 Connection recess 47 Linked Striker 48 Locking device 48a Locking member 48b Connecting member 48c Lock operation member 50 First detection sensor (detection unit) 51 Sensor detection unit 52 Transmission Line 53 First Electric Wire 54 1st Connector 55 Second detection sensor (detection section) 56 Second Wire 57 Second Connector 60 Control device 61 First Electric Wire 62 First connector 63 Second Electric Wire 64 Second connector 65 Third Wire 70 Blower 71 Blower 71a Blower body 71b Duct connection 71c Wire connection part 72 First Duct Section 73 Second duct section 74 Air Outlet 80 Airbag device 81 Airbag 82 Inflator 83 Electric wire 90 Vibration motor (vibration device) 95 First handle (handle) 96 Second handle <Second embodiment> S2 Vehicle Seat 101 Seat Cushion 101a Pad material 101k Sensor housing recess 110 Support plate (cushion support plate) 110a Mounting recess 110b Reinforcement part 112 Plate protrusion 114 Frame mounting part 114a Connector locking hole 116 Wire passing hole 130 Cushion frame (seat frame) 133 First connecting frame 133a Wire passing hole 133b Connector locking hole 136 Bracket 150 First detection sensor 154 1st Connector 155 Second detection sensor (detection unit) 156 Second Electric Wire 157 Second Connector 160 Control device 163 Second Electric Wire 164 Second connector <Third embodiment> S3 Vehicle Seat 201 Seat Cushion 210 Support Plate 210a Cover member 216 Connector mounting hole 230 Cushion frame (seat frame) 255 Second detection sensor (detection unit) 256 Second Wire 257 Second Connector 260 Control Device 263 Second Electric Wire 264 2nd connector <Fourth embodiment> S4 Vehicle Seat 301 Seat Cushion 310 Support plate (cushion support plate) 312 Plate protrusion 314 Frame mounting part 316 Wire passing hole 330 Cushion frame (seat frame) 333 1st connecting frame 333a Wire passing hole 333b Connector locking hole 336 Bracket 355 Second detection sensor (detection unit) 356 Second Electric Wire 357 Second Connector 360 Control Device 363 Second Electric Wire 364 2nd connector

Claims

1. A vehicle seat including a seat cushion, a seat back, and a seat frame supporting the seat cushion and the seat back, At least one of the seat cushion and the seat back is detachably attached to the seat frame, At least one of the above A support plate attached to the seat frame; A padding material placed on the support plate; a cover material covering the support plate and the pad material, A vehicle seat, comprising: an airbag device having an inflatable airbag attached to said support plate.

2. The airbag device includes the airbag and an inflator that supplies gas to the inside of the airbag.

2. The vehicle seat according to claim 1, wherein a recess for accommodating the inflator is formed on a surface of the support plate.

3. the support plate has a plate body that supports the padding material, and a plate engaging portion that is provided on a back surface of the plate body at a portion where the accommodating recess is formed and that protrudes toward the seat frame, 3. The vehicle seat according to claim 2, wherein the plate engaging portion is detachably engaged with an engaged portion provided on a surface of the seat frame.

4. An airbag accommodating recess for accommodating the airbag is formed on the back surface of the pad material, 3. The vehicle seat according to claim 2, wherein a part of the airbag accommodating recess and a part of the accommodating recess are disposed so as to face each other.

5. The seat cushion is detachably attached to the seat frame, The seat frame includes left and right side frames arranged at an interval in a seat width direction, and a submarine prevention member connecting front portions of the left and right side frames, The inflator is disposed forward of the submarine restraint member, 3. The vehicle seat according to claim 2, wherein the airbag extends rearward from the inflator and is disposed so as to straddle the submarine suppression member in the seat front-rear direction.

6. The seat frame is provided with a duct through which air blown from a blower passes, 6. The vehicle seat according to claim 1, wherein when the support plate is attached to the seat frame, the airbag and a portion of the duct are disposed at the same position in the attachment direction of the support plate.

7. The seat frame includes left and right side frames arranged at an interval in a seat width direction, and a support frame connecting front portions of the left and right side frames, the blower is supported by the support frame; 7. The vehicle seat according to claim 6, wherein the airbag is disposed at a position overlapping the support frame when the support plate is attached to the seat frame.

8. The seat cushion is detachably attached to the seat frame, The airbag device is attached to the seat cushion and includes the airbag and an inflator that supplies gas to the inside of the airbag.

7. The vehicle seat according to claim 6, wherein the inflator and the blower are disposed at the same position in the front-rear direction of the seat.

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