Vehicle seat

Abstract

To provide a vehicle seat capable of efficiently delivering an aroma to a seated occupant.SOLUTION: A vehicle seat S1 includes an aromatic device 60 that is provided at an upper portion of a seat back 2 and generates an aroma. The seat back 2 includes a back frame 10 and a pad material 2a disposed on a front side of the back frame. The aromatic device 60 includes an aroma generator 61 and an aroma passage 62 that is connected to the aroma generator and guides the aroma generated by the aroma generator to flow out toward the seated occupant through a pad hole 2aa formed in the pad material 2a. The aroma generator 61 is disposed at an upper position relative to a back upper frame 12, and the aroma passage 62 extends downward from the aroma generator, passes through the pad hole 2aa provided at a lower position relative to the back upper frame, and extends from a rear surface side to a front surface side of the pad material 2a.SELECTED DRAWING: Figure 12

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a fragrance device that is provided in the seat body and emits a fragrance. [Background technology]

[0002] A vehicle seat equipped with a fragrance device that is provided inside the seat back and emits a fragrance is known. This fragrance device is arranged inside the seat back and includes a fragrance device that emits a fragrance, and a fragrance passage that is connected to the fragrance device and allows the fragrance emitted from the fragrance device to flow toward the seat occupant (see, for example, Patent Document 1). Also known is a vehicle seat that includes a canopy that switches between a "stored state" in which it is stored in the seat back and a "deployed state" in which it unfolds in front of the seat back and covers the head of the occupant from above, and an air conditioning unit that is attached to the seat back or the canopy and adjusts the air in the interior space of the canopy (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-195429 [Patent Document 2] Japanese Patent Publication No. 2022-23351 Summary of the Invention [Problem to be solved by the invention]

[0004] In a vehicle seat equipped with a fragrance device such as that disclosed in Patent Document 1, there has been a demand for a technology that can efficiently deliver the fragrance emitted from the fragrance device to the seated occupant. For example, the aroma emitted from an aroma device (aroma diffuser) is usually heavier than air and therefore tends to move downward. Therefore, unless the shape and configuration of the aroma passage are devised, there is a risk that the air containing the aroma (aroma components) blown out from the aroma device will not pass through the aroma passage and properly flow out from the outlet. Alternatively, if the fragrance passage extends through the padding of the seat back, deformation of the padding may cause the fragrance passage to move, which could prevent the air containing the fragrance passing through the fragrance passage from flowing out properly.

[0005] In particular, in vehicle seats equipped with a canopy such as that described in Patent Document 2, there was a demand for technology that could efficiently release the fragrance generated from the fragrance device and allow the fragrance to circulate suitably throughout the interior space of the canopy.

[0006] An object of the present invention is to provide a vehicle seat that can efficiently deliver a fragrance generated from a fragrance device to a seated occupant. Another object of the present invention is to provide a vehicle seat equipped with a canopy that is capable of suitably dispersing a fragrance into the interior space of the canopy. [Means for solving the problem]

[0007] The above problem is solved by the vehicle seat of the present invention, which comprises a seat back and a fragrance device that is provided on the seat back or at a position higher than the seat back and that emits a fragrance, wherein the seat back comprises a back frame that forms the skeleton of the seat back and a padding material placed on the front side of the back frame, the back frame having left and right back side frames that are provided on the sides in the seat width direction and a back upper frame that is provided above the left and right back side frames, wherein the fragrance device comprises a fragrance emitter that emits a fragrance and a fragrance passage that is connected to the fragrance emitter and that allows the fragrance emitted from the fragrance emitter to flow towards the seat occupant through pad holes formed in the padding material, wherein the fragrance emitter is positioned at a position higher than the back upper frame, and the fragrance passage extends downward from the fragrance emitter, passes through the pad holes that are provided below the back upper frame, and extends from the back side to the front side of the padding material.

[0008] With the above configuration, it is possible to realize a vehicle seat that can efficiently deliver the fragrance generated from the fragrance device to the seated occupant. In more detail, in the vehicle seat, the fragrance diffuser is positioned above the back upper frame, and the fragrance passage extends downward from the fragrance diffuser, passes through a pad hole located below the back upper frame, and extends from the back side to the front side of the pad material. This allows the air containing the fragrance (heavy air) generated from the fragrance device and passing through the fragrance passage to flow downward from the fragrance device to the pad hole and reach the seat occupant efficiently. In other words, the air containing the fragrance components, which is heavier than normal air, can be moved efficiently. However, if the air containing the fragrance components is moved upward, there is a risk that it will stagnate (clog) in the fragrance passage.

[0009] In this case, the seat back is provided with a headrest that is attached to the top of the seat back or at a position higher than the seat back, and the aroma diffuser is attached to the upper surface of the back upper frame, positioned rearward of the headrest, and positioned so as to overlap with the headrest when viewed from the front. As described above, by placing the aroma diffuser at a position corresponding to the headrest, the air containing the scent emitted from the aroma diffuser can be suitably moved from above (towards the headrest) to below (towards the seatback).

[0010] In this case, it is preferable that the pad hole is formed in the seating surface of the seat back, and the fragrance passage passes through the pad hole and communicates with the seating surface of the seat back. As described above, by providing the outlet of the fragrance device on the seating surface, the fragrance can be delivered to the seated person more efficiently.

[0011] In this case, the aroma diffuser is preferably attached to the upper surface of the back upper frame via an attachment bracket, and is disposed above and spaced apart from the back upper frame. The above-mentioned configuration allows a gap to be formed between the fragrance device and the back upper frame in the vertical direction. This allows the fragrance passage of the fragrance device to be simply arranged inside the seat body. For example, the fragrance passage can be extended using the gap and connected to the fragrance device.

[0012] In this case, it is preferable that the vehicle is provided with a headrest that is located above the seat back and is constructed separately from the seat back, the fragrance diffuser is located inside the headrest, and the fragrance passage extends from the headrest to the seat back, passes through the pad hole in the seat back, and extends from the back side to the front side of the pad material. As described above, by attaching the aroma diffuser inside the headrest, it becomes easier to secure space inside the seat back, which can be used to suitably arrange other movable devices and electronic devices.

[0013] In this case, the headrest has a head pillar, the back frame is provided at the upper end of the back frame, is arranged at a distance in the seat width direction, and has left and right pillar mounting members that support the head pillar, and the fragrance diffuser is preferably arranged between the left and right pillar mounting members in the seat width direction. With the above-described configuration, the aroma diffuser can be appropriately positioned above the seat back while avoiding interference with the head pillars (left and right pillar mounting members).

[0014] In this case, it is preferable that the head pillar has a hollow shape, and the fragrance passage has flexibility and extends through the hollow interior of the head pillar. With the above-described configuration, the hollow shape of the head pillar can be utilized to arrange the fragrance passage in a compact manner.

[0015] In this case, the fragrance passage has a duct insertion member that is provided in the pad hole and extends along the pad hole from the back side to the front side of the pad material, and the duct insertion member has a protrusion that protrudes from the outer surface of the duct insertion member, and the protrusion abuts against the pad material, thereby restricting movement within the pad material. This configuration allows the fragrance passage to be stably fixed inside the pad material. That is, it is possible to prevent the fragrance passage from moving due to deformation of the pad material caused by the seating load. As a result, the fragrance-containing air can be efficiently discharged.

[0016] In this case, the seat back preferably includes a skin material that covers the back frame and the padding, the fragrance passage preferably has a blowing member attached to the extending end of the duct insertion member, the blowing member being attached to the extending end of the duct insertion member from the surface side of the seat back, and being positioned so that the skin material is sandwiched between the blowing member and the duct insertion member. With the above-described configuration, the cover material can be suitably fixed by the blow-out member, and the aroma passage can be easily fixed inside the pad material.

[0017] In this case, a frame drive device is provided that connects the back upper frame to the left and right back side frames so that it can rotate in the fore-and-aft direction of the seat, and the aroma diffuser is preferably assembled to the upper surface of the back upper frame or assembled to the upper surface of the back upper frame via an assembly bracket. As described above, in a vehicle seat equipped with a frame drive device, the fragrance device is disposed on the upper part of the seat back, so that an operator can easily replace the fragrance device from above.

[0018] In this case, a side airbag device is provided to cushion the impact applied from the side of the vehicle, the side airbag device is attached to the outside of the back side frame, and the fragrance passage and the pad hole are preferably positioned above the side airbag device. With the above configuration, it is possible to prevent interference between the side airbag and the fragrance device (fragrance unit, fragrance passage) when the side airbag inflates and deploys, which means that the side airbag can be deployed appropriately.

[0019] In this case, the seat back is provided with a canopy that is located on the top of the seat back and can be switched between a state where it is stored on the seat back side and a state where it is deployed on the front side of the seat back and covers the head of the occupant, and the air outlet of the fragrance device is preferably located on the surface of the seat back and facing the internal space of the canopy. With the above configuration, in a vehicle seat equipped with a canopy, the fragrance can be suitably dispersed in the interior space of the canopy. [Effects of the Invention]

[0020] According to the present invention, a vehicle seat can be realized that can efficiently deliver the fragrance generated from the fragrance device to the seat occupant. In other words, air containing fragrance components, which is heavier than normal air, can be efficiently transported. Furthermore, according to the present invention, the air containing the scent generated from the aroma diffuser can be suitably moved from above (the headrest side) to below (the seat back side). Furthermore, according to the present invention, the fragrance passage of the fragrance device can be simply arranged inside the seat body. Furthermore, according to the present invention, space can be secured inside the seat back, allowing other movable devices and electronic devices to be suitably arranged. Furthermore, according to the present invention, the fragrance diffuser can be appropriately positioned to avoid interference with the head pillar (pillar mounting member), and the fragrance passage can be positioned compactly. Furthermore, according to the present invention, the aroma passage can be stably fixed inside the pad material. Furthermore, according to the present invention, the covering material can be suitably fixed by the blowing member. Furthermore, according to the present invention, in a vehicle seat equipped with a frame drive device, the fragrance device can be easily replaced from above. Furthermore, according to the present invention, interference between the side airbag and the fragrance device (fragrance unit, fragrance passage) can be suppressed. Furthermore, according to the present invention, in a vehicle seat equipped with a canopy, a fragrance can be suitably dispersed in the interior space of the canopy. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view of the vehicle seat of the first embodiment, showing the canopy in a "storage state." FIG. [Figure 2] FIG. 1 is a perspective view of a vehicle seat showing the canopy in the "deployed" position. [Figure 3] FIG. 1 is a side view of the vehicle seat showing the canopy in the "stowed" position. [Figure 4] FIG. 1 is a side view of the vehicle seat showing the canopy in the "deployed" position. [Figure 5] FIG. 2 is a front view of the seat back and canopy, showing the back frame. [Figure 6]This is a perspective view of the back frame (right side), drive unit, pivot bracket, and canopy. [Figure 7] This is a front view of the back frame (right side), drive unit (without cover), pivot bracket, and canopy. [Figure 8] FIG. [Figure 9] This is an assembly diagram of the seat back and backboard. [Figure 10] This is a perspective view of the seat back, canopy (deployed state), display device, fragrance device, and air conditioning device. [Figure 11] 11 is an enlarged view of the main part of FIG. 10, showing the opening and closing part located above the backboard. FIG. [Figure 12] FIG. 2 is a front view of the back frame, the fragrance device, and the air conditioning device. [Figure 13] This is a side cross-sectional view of the seat back, canopy (stored state), canopy cover, display device, fragrance device, and air conditioning device. [Figure 14] FIG. 14 is an enlarged view of the main parts of FIG. 13, showing the seat back (pad material, covering material), fragrance passage (duct), and blowing member. [Figure 15] FIG. 2 is a perspective view of a duct body, a duct connecting member, a duct inserting member, and a blowing member. [Figure 16] FIG. 2 is an exploded perspective view of a duct body, a duct connecting member, a duct inserting member, and a blowing member. [Figure 17] This is a perspective view of the back frame (right side), drive unit (without cover), pivot bracket (without cover), and canopy. [Figure 18] This is an exploded perspective view of the back frame (right side), pivot bracket, and canopy. [Figure 19] FIG. 19 is a detail (drive device) of the exploded perspective view of FIG. [Figure 20] FIG. 19 is a detail (rotating bracket) of the exploded perspective view of FIG. [Figure 21] FIG. 2 is an enlarged view of the main part of the seat back (right side), showing each cover. [Figure 22]This is a perspective view of the seat back (right side), pivot bracket, and canopy from a different angle. [Figure 23] FIG. 1 is a perspective view of the back frame (left side), the frame drive device, the drive device, and the pivot bracket. [Figure 24] FIG. 10 is a perspective view of the back frame (left side), frame drive device, drive device, and pivot bracket as seen from another angle. [Figure 25] FIG. 10 is a front view of a vehicle seat according to a second embodiment, showing a back frame, a head pillar, a fragrance device, a speaker, and an air cell. [Figure 26] FIG. 2 is a perspective view of the head pillar and the fragrance device. [Figure 27] FIG. 10 is a front view of a vehicle seat according to a third embodiment, showing a seat back, a headrest, a fragrance device, and a side airbag device. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. This embodiment relates to a "vehicle seat" that can efficiently deliver fragrance generated from a fragrance device to a seated occupant. The side of the seat back (headrest) of a vehicle seat on which a seat occupant sits is the front side (front side of the seat).

[0023] First Embodiment 1 to 4, the vehicle seat S1 is a vehicle seat, for example, a front seat arranged in the front position of the vehicle. Note that the vehicle seat S1 may be a middle seat or a rear seat.

[0024] The vehicle seat S1 includes a seat cushion 1, a seat back 2, a headrest 3, a reclining device 4 that rotatably connects the seat back 2 to the seat cushion 1, a height device 5 that connects the seat cushion 1 to the vehicle floor so that it can be raised and lowered, a rail device 6 that supports the seat cushion 1 so that it can move back and forth relative to the vehicle floor, and a control device 7 that controls the operation of the reclining device 4, the height device 5, and the rail device 6. The vehicle seat S1 also includes a canopy 30 provided on top of the seat back 2 to cover the head of the seated occupant, a canopy cover 40, a display device 50 installed in the interior space of the canopy 30, and a fragrance device 60 and an air conditioning device 65 provided inside the seat back 2. The vehicle seat S1 also includes a drive unit 70 that switches the canopy 30, a pivoting bracket 80 that connects the canopy 30 and the drive unit 70, a frame drive unit 90 that pivots the upper portion of the seat back 2 relative to the lower portion, and a side airbag device 100 that is provided on the side of the seat back 2. The seat cushion 1, the seat back 2 and the headrest 3 are also referred to as a "seat body."

[0025] The vehicle seat S1 is a seat that can be switched between a "normal mode (first mode)" shown in Figures 1 and 3 and a "relaxation mode (second mode)" shown in Figures 2 and 4, and the switching is controlled by, for example, a control device 7. Specifically, when the vehicle seat S1 is in the "normal mode," the seat back 2 is in the "upright state," the upper part of the seat back 2 is in the "normal state," and the canopy 30 is in the "stored state" stored on the seat back 2 side. On the other hand, when the vehicle seat S1 is in the "relaxation mode," the seat back 2 is tilted backward in a "reclined state (reclined state)," the upper part of the seat back 2 is tilted forward relative to the lower part in a "forward tilted state (center-folded state)," and the canopy 30 is deployed forward of the seat back 2 in an "expanded state." In addition, the control device 7 controls the driving operation of the height device 5 and rail device 6 by manual operation by the seat occupant or automatic operation, and can move the height position and front-rear position of the seat body. The control device 7 also controls the operation of the display device 50 to display images. The control device 7 also controls the operation of the fragrance device 60 and air conditioning device 65, and can provide cool air (warm air) to the seat occupant's head and spread a fragrance.

[0026] As shown in Figures 1 and 2, the seat cushion 1 is a seating portion that supports the seated person from below, and includes a cushion frame 1c that serves as a skeleton, a pad material 1a that is placed on the cushion frame 1c, and a cover material 1b that covers the cushion frame 1c and the pad material 1a.

[0027] The seat back 2 is a backrest portion that supports the seated occupant from behind, and includes a back frame 10 that serves as a skeleton, a padding material 2a, a skin material 2b, and a backboard 20 that covers the back frame 10, the padding material 2a, and the skin material 2b from behind. More specifically, the padding 2a can be separated into an upper and lower portion, and has an upper padding placed on the upper portion of the back frame 10, and a lower padding placed on the lower portion of the back frame 10. The upper padding and the lower padding are each covered with a skin material 2b.

[0028] The headrest 3 supports the head of a seated occupant from behind and includes a head pillar 3c, a padding material 3a, and a covering material 3b. The headrest 3 is attached to the front of the upper part of the seat back 2. The headrest 3 may be positioned above the seat back 2, but it is preferable to position it in front of the seat back 2 in order to prevent interference with the canopy 30 and to position the canopy 30 compactly.

[0029] As shown in FIG. 1, the reclining device 4 is a device that rotatably connects the seat back 2 to the seat cushion 1 and locks the seat back 2. The reclining device 4 includes a reclining body 4a that is driven when rotating the seat back 2, a rotation axis 4b, a spiral spring 4c that urges the seat back 2 to rotate forward around the rotation axis 4b, an operating lever that releases the locked state of the seat back 2, and a drive motor. The reclining body 4a has a locking mechanism that switches the state of the seat back 2 between a "locked state" and an "unlocked state" in which the seat back 2 is rotatable relative to the seat cushion 1. The rotation shaft 4b is supported in the seat width direction on the seat cushion 1 side and the seat back 2 side. One end of the spiral spring 4c is anchored on the seat cushion 1 side, and the other end is anchored on the seat back 2 side.

[0030] As shown in FIG. 1, the height device 5 is attached between the seat cushion 1 and the rail device 6 in the vertical direction. The height device 5 includes left and right first links 5a arranged on the front side of the seat, left and right second links 5b arranged on the rear side of the seat, a locking member that locks the seat cushion 1, a height operating lever that releases the locked state of the locking member, and a drive motor. The second link 5b serves as a driving link, allowing the height of the seat body to be adjusted.

[0031] As shown in FIG. 1, the rail device 6 is disposed between the seat cushion 1 and the vehicle floor in the vertical direction. The rail device 6 is fixed to the vehicle floor and includes left and right lower rails 6a extending in the fore-and-aft direction, left and right upper rails 6b supported slidably along the lower rails 6a, a locking member that locks the upper rails 6b so that they cannot slide relative to the lower rails 6a, a rail operating lever 6c that releases the locked state of the locking member, and a drive motor. A seat cushion 1 is mounted on the upper surfaces of the left and right upper rails 6b via a height device 5.

[0032] As shown in FIG. 1, the control device 7 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 7 is connected to the operation switches, detection sensors, reclining device 4, height device 5, rail device 6, display device 50, fragrance device 60, air conditioning device 65, drive device 70, frame drive device 90, side airbag device 100 and other moving devices and electronic devices via an in-vehicle network. The control device 7 determines that an occupant is seated based on, for example, the turning on of an operation switch by the occupant or based on a detection signal output from a detection sensor, and controls the operation of the above-mentioned movable devices and electronic devices.

[0033] Specifically, the control device 7 is a computer equipped with a CPU (processor) as a data calculation and control processing device, ROM and RAM as storage devices, an HDD, and a communication interface for sending and receiving information data via an in-vehicle network. The control device 7 is provided inside the seat cushion 1 and is connected to various movable devices and electronic devices by electric wires (harnesses). The control device 7 may be provided inside the seat back 2 or outside the seat body.

[0034] <Back frame> As shown in Figures 5 to 7, the back frame 10 is a substantially rectangular frame-like body and includes back side frames 11 arranged on the left and right sides, inverted U-shaped back upper frames 12 provided at the upper end portions of each back side frame 11, a back lower frame 13 connecting the lower end portions of each back side frame 11, and a back connecting plate 14 connecting the left and right side portions of the back upper frame 12 and extending in the seat width direction. The back frame 10 also includes left and right wire members 15 that extend vertically and are hooked to the back upper frame 12 and the back lower frame 13, and a support plate 16 (pressure plate) that is held by the left and right wire members and supports the seated person from behind.

[0035] The back side frame 11 is a plate-like frame that extends in the vertical direction and has a C-shaped cross section. The lower end portion of the backside frame 11 is connected to the rear end portion of the cushion frame 1c via the reclining device 4. A mounting bracket 17 for mounting a drive unit 70 and a pivot bracket 80 is attached to the outer surface of the back side frame 11. A frame drive device 90 is attached to the inner surface of the left back side frame 11. Protruding frames 11a and 11b that protrude inward in the seat width direction from the frame body of the back side frame are formed in the upper and lower portions of the back side frame 11. As shown in Fig. 7, a board frame 23 (frame connecting portions 23c and 23d) described below is assembled to the protruding frames 11a and 11b. The protruding frames 11a and 11b are spaced apart in the up-down direction. The back side frame 11 and the back upper frame 12 may be formed as an integrated frame.

[0036] The back upper frame 12 is an inverted U-shaped frame that extends in the vertical direction. The back upper frame 12 has an upper frame main body 12a and a cylindrical pillar mounting member 12b that is attached to the center portion of the upper frame main body 12a in the seat width direction and for mounting a headrest 3 (head pillar). The pillar mounting members 12b are fixed in pairs with a gap between them.

[0037] A connecting bracket 12c for connecting the fragrance device 60 and the air conditioning device 65 is fixed to the center of the back upper frame 12 in the seat width direction. As shown in FIGS. 12 and 13, the connecting bracket 12c is a substantially C-shaped bracket, and is attached to the center of the back upper frame 12 in the seat width direction from the rear. The connecting bracket 12c is fixed to the rear surface of the back upper frame 12 by, for example, welding, and is disposed between the left and right pillar mounting members 12b.

[0038] As shown in FIGS. 23 and 24, a frame drive device 90 (a frame support member 94 having a C-shaped cross section) is attached to the lower portion (lower end) of the upper frame main body 12a via a rotary shaft 96. The frame drive device 90 allows the back upper frame 12 to rotate in the front-rear direction relative to the back side frame 11. That is, as shown in Figures 2 and 4, the seat back 2 can be switched to a "forward tilted state (center-folded state)" in which the upper portion thereof is tilted forward relative to the lower portion thereof.

[0039] As shown in FIGS. 6, 7, 17 and 18, the mounting bracket 17 is attached to the outer surface of the backside frame 11, and is a bracket for mounting the drive unit 70 and the rotating bracket 80. The mounting bracket 17 has a shape that extends in the vertical direction and is bent in the seat width direction. The mounting bracket 17 is disposed at a position that protrudes slightly forward from the back side frame 11. Specifically, the mounting bracket 17 has a long inner wall portion 17a connected to the outer surface of the backside frame 11, a long outer wall portion 17b located outside the inner wall portion 17a in the seat width direction and connected to the drive shaft 72, and a connecting wall portion 17c extending in the seat width direction and connecting the upper end of the inner wall portion 17a and the lower end of the outer wall portion 17b.

[0040] The outer wall portion 17b is disposed offset outward in the seat width direction from the inner wall portion 17a. That is, the drive member 71 is disposed outward and spaced apart from the back side frame 11 in the seat width direction. In other words, the drive shaft 72 is disposed outwardly and spaced apart from the back side frame 11 in the seat width direction. The mounting bracket 17 (outer wall portion 17b) is fastened to the outer surface of the backside frame 11 with fastening bolts 18. The mounting bracket 17 (inner wall portion 17a) is connected to the drive member 71 (drive shaft 72) via an intermediate plate 73 and a guide plate 74. These components are connected with connecting bolts 19. The mounting bracket 17 may be fixed to the backside frame 11 by welding.

[0041] <Backboard> As shown in FIGS. 8, 9 and 13, the backboard 20 is a resin board member that entirely covers the back frame 10, canopy 30, display device 50, fragrance device 60 and air conditioner 65 from behind. By providing the backboard 20, the vehicle seat S can be configured so that, for example, the back frame 10, the canopy frame 32, etc. are not exposed from behind, thereby improving the appearance of the vehicle seat S when viewed from behind.

[0042] The backboard 20 comprises an assembly backboard 21 assembled to the backframe 10 from the rear, a storage backboard 22 capable of storing the assembly backboard 21, an inverted U-shaped board frame 23 supporting the storage backboard 22 from the rear, and a rear backboard 24 covering the entire storage backboard 22 and the board frame 23 from the rear.

[0043] 8, 9, and 13, the assembly backboard 21 has a plate-shaped board body 21a and a protruding outer edge portion 21b that protrudes forward and is provided along substantially the entire outer edge of the board body 21a. A board recess portion 21c that is recessed rearward is formed in the center of the board body 21a. The assembled backboard 21 covers the headrest 3, the back upper frame 12 and the back connecting plate 14 from the rear, and is assembled to the back upper frame 12 and the back connecting plate 14 from the rear. More specifically, the assembly backboard 21 has frame assembly portions 21d that can be assembled to assembly receiving portions 14a provided on the left and right side portions of the back connecting plate 14.

[0044] The protruding outer edge 21b at the lower end of the assembly backboard 21 protrudes forward beyond the back upper frame 12. In other words, the protruding outer edge 21b covers the back upper frame 12 from below. The left and right wire members 15 are hooked to the protruding outer edge portion 21b.

[0045] As shown in Figures 8, 9, and 13, the storage backboard 22 has a plate-shaped board body 22a, a protruding outer edge portion 22b that is provided along almost the entire outer edge of the board body 22a and protrudes forward, and a protruding flange portion 22c that is provided at the protruding end of the protruding outer edge portion 22b and protrudes slightly in the vertical or horizontal direction. A board recess 22d recessed rearward is formed in the center of the board body 22a, and a plurality of fitting holes 22e are formed in the rear surface of the board body 22a. The assembly backboard 21 and the storable backboard 22 are not fixed, and the assembly backboard 21 rotates forward together with the seat back 2 (back side frame 11) relative to the storable backboard 22. That is, as shown in FIG. 4, the assembly backboard 21 can move away from the storable backboard 22.

[0046] As shown in FIGS. 6 to 9, the board frame 23 is a plate-shaped frame, and is assembled to fit into the board recess 22d of the storage backboard 22. As shown in FIGS. Furthermore, a plurality of assembly holes 23a and a plurality of engagement holes 23b are formed on the rear surface of the board frame 23 along the extending direction of the board frame 23. The board frame 23 is fixed to the rear surface of the storage backboard 22 by fastening the assembly bolts into the assembly holes 23a from the rear. Furthermore, the engagement holes 23b are detachably engaged with engagement protrusions 24h formed on the front surface of the rear backboard 24. The engagement with each other may also be achieved by clip engagement.

[0047] The board frame 23 extends downward further than the assembly backboard 21 and the storage backboard 22. Frame connecting portions 23c and 23d for connecting to the back side frames 11 (protruding frames 11a and 11b) are formed on the left and right downward extending portions of the board frame 23. That is, the board frame 23 is assembled to the storage backboard 22 and the back side frame 11.

[0048] As shown in FIGS. 4, 8, 9 and 13, the rear backboard 24 is a board member that covers the back frame 10, the canopy 30, the fragrance device 60 and the air conditioning device 65 from the sides and rear. The rear backboard 24 has a rear wall portion 24a, an upper wall portion 24b and a bottom wall portion 24c that protrude forward from the upper and lower ends of the rear wall portion 24a, respectively, and side wall portions 24d that protrude forward from both the left and right ends of the rear wall portion 24a. A mounting hole 24e for mounting the reclining device 4 is formed at the lower end of the side wall portion 24d. A notch 24f is formed at the front end of the side wall 24d, cutting downward from the upper end. The drive unit 70, outer drive cover 77, and rotating bracket 80 are disposed (received) at a position corresponding to the notch 24f. A harness-passing hole is formed at the lower end of the notch 24f, through which the harness extending from the drive unit 70 passes.

[0049] The rear backboard 24 is assembled to the storage backboard 22 and the board frame 23 from the rear. Specifically, a plurality of fitting protrusions 24g and engagement protrusions 24h are formed on the front surface of the rear backboard 24. The fitting protrusions 24g are detachably fitted into the storage backboard 22 (fitting holes 22e), and the engagement protrusions 24h are detachably engaged with the board frame 23 (engagement holes 23b), so that the rear backboard 24 is integrally assembled with the storage backboard 22 and the board frame 23. The rear backboard 24 may be detachably engaged with the storage backboard 22 and the board frame 23 by clip engagement.

[0050] By having the rear backboard 24, the appearance of the vehicle seat S (appearance when viewed from behind) can be improved even if, for example, the upper part of the seat back 2 is tilted forward relative to the lower part (center-bent state). Note that, in the case where the vehicle seat S does not have the frame drive device 90 and the upper portion of the seat back 2 does not tilt forward, the vehicle seat S does not need to have the rear backboard 24. In other words, a skin material may be used instead of the rear backboard 24, and the rear portion of the vehicle seat S may be covered with the skin material.

[0051] In the above configuration, as shown in Figures 8 and 13, the rear backboard 24 has a board protrusion 24i provided on its outer edge that protrudes above the back frame 10 and the pad material 2a and outward in the seat width direction. In the "stored state," the canopy frame 32 is provided in front of the board extension portion 24i and is stored so as not to extend outward from the rear backboard 24. Specifically, the outer surface of the rear backboard 24 and the outer surface of the canopy frame 32 (the outer surface of the hood 31) are substantially flush with each other. Therefore, the appearance of the vehicle seat S equipped with the canopy 30 can be maintained in good condition.

[0052] <Canopy> 1 to 4, 10, and 13, the canopy 30 is provided on the upper part of the seat back 2 and switches between a "stored state" in which it is stored in the seat back 2 and an "expanded state" in which it is deployed to the front side of the seat back 2 to cover the head of the seated occupant. The canopy 30 is also called a covering part, a canopy, a hood, etc. The canopy 30 is connected to the left and right side portions (left and right back side frames 11) of the seat back 2 via mounting brackets 17, a drive unit 70 and a rotating bracket 80 so as to be rotatable in the front-to-rear direction of the seat. More specifically, the canopy 30 has a hood 31 that covers the head of a seated occupant from above, and a canopy frame 32 that supports the hood 31.

[0053] The canopy 31 is a stretchable sheet that is folded so as to be able to unfold in the front-rear direction of the seat. The canopy 31 is made of, for example, a waterproof cloth. When the canopy 31 is in the "deployed state", it can cover the upper part of the seat back 2 and the headrest 3 from above, the front, and the left and right sides. In other words, it can cover the head of a seated occupant. When the hood 31 is in the "storage state", it is stored in a folded state toward the seat back 2 (backboard 20) side. At this time, the hood 31 is covered from above and from the sides by the canopy cover 40.

[0054] As shown in Figures 2, 4, 10, and 13, the canopy frame 32 is attached to the seat back 2 so as to be rotatable in the front-to-rear direction, and has a drive frame 33 that rotates in response to the driving of the drive unit 70, and a plurality of driven frames 34 that rotate in response to the driving operation of the drive frame 33. The drive frame 33 is disposed at a position furthest forward of the driven frame 34 . The drive frame 33 and the driven frame 34 are arranged to surround the back frame 10 (back upper frame 12).

[0055] The drive frame 33 is a plate-like frame having an inverted U-shape. Specifically, it has left and right side frames 33a extending upward from the left and right lateral portions of the back frame 10 in the seat width direction, respectively, and an upper frame 33b connecting upper portions of the left and right side frames 33a. The driven frame 34 is a wire frame, and like the driving frame 33, has left and right side frames 34a and an upper frame 34b.

[0056] The drive frame 33 is a frame that supports the front end portion of the hood 31 from below. The left and right side frames 33a and the upper frame 33b are connected to the hood 31. The lower ends of the left and right side frames 33a are connected to the left and right back side frames 11 via pivot brackets 80. More specifically, as shown in FIGS. 18 and 20, an assembly hole 33c (assembly receiving portion) for assembly to the rotating bracket 80 is formed in the lower end of the drive frame 33 (side frame 33a). The drive frame 33 rotates in the front-rear direction around the drive shaft 72 as the rotation center when the rotation bracket 80 rotates in accordance with the driving of the drive device 70 .

[0057] 10, a frame protrusion 33d that protrudes into the internal space of the canopy 30 is formed on the inner surface of the center portion in the seat width direction of the drive frame 33 (upper frame 33b). A holder 55 is fixed to the inner surface of the frame protrusion 33d, and a display device 50 is attached via the holder 55.

[0058] As shown in FIG. 10, the drive frame 33 has an outer surface formed with a retaining rib 33e extending in the direction in which the drive frame 33 extends. The hook rib 33e is a hook portion for hooking the electric wire 51 extending from the display device 50, and is formed at one end of the drive frame 33 in the width direction and protrudes outward from the drive frame 33.

[0059] The driven frame 34 is disposed at a position rearward of the drive frame 33 and is a frame that supports the hood 31 from below. The multiple driven frames 34 are spaced apart from one another when switched from the "stored state" to the "deployed state" and can support the hood 31 as a whole. The plurality of driven frames 34 are each connected to the hood 31. The lower ends of the plurality of driven frames 34 are gathered together in one location and fixed to the lower end of the hood 31.

[0060] <Canopy cover> As shown in FIGS. 2, 4, 10, and 13, the canopy cover 40 is attached to the canopy 30 and covers the canopy 30 from the outside. The canopy cover 40 is positioned to cover the hood 31 and the canopy frame 32 from above and from the sides when the canopy 30 is in the "stored state." The canopy cover 40 is arranged to cover the display device 50 from above, the front, and the sides when in the "stored state" and the "deployed state."

[0061] The canopy cover 40 has a rear canopy cover 41 that covers the hood 31 and canopy frame 32 from above and from the sides when the canopy 30 is in the "stored state," and a front canopy cover 45 that is located forward of the rear canopy cover 41 and covers the internal space of the canopy 30 from the front. The rear canopy cover 41 is attached rearward of the drive frame 33, and the front canopy cover 45 is attached forward of the drive frame 33.

[0062] The rear canopy cover 41 is a plate-like resin cover having an inverted U-shape, and extends along the canopy frame 32 (drive frame 33) and reaches the left and right side portions of the seat back 2. The upper portion of the rear canopy cover 41 is detachably attached to the upper portion of the drive frame 33. The lower end of the rear canopy cover 41 is detachably engaged with an outer bracket cover 87 that covers the rotating bracket 80 from the outside.

[0063] The front canopy cover 45 is a resin cover that is slightly long in the seat width direction, extends along the drive frame 33, and is disposed at a position above the seat back 2. The outer surface of the front canopy cover 45 (cover body 46) is formed along the drive frame 33 and has a fitting recess 47 for fitting onto the drive frame 33. The front canopy cover 45 is attached to the inner surface of the canopy frame 32 by fitting the fitting recess 47 into the drive frame 33.

[0064] As described above, by providing the canopy cover 40, the frame that forms the framework of the canopy 30 can be configured to be exposed to the outside as little as possible. Specifically, when the canopy 30 is at least in the "stored state," the hood 31 and the canopy frame 32 can be exposed to the outside as little as possible. In other words, the appearance of the vehicle seat S can be improved.

[0065] <Display equipment> The display device 50 is a display used by a person seated in the vehicle seat S, as shown in FIGS. The display device 50 is attached to the canopy frame 32 (drive frame 33) via a holder 55. The display device 50 and the holder 55 are disposed in the interior space of the canopy 30 and are covered from the front and sides by the canopy cover 40 . More specifically, the canopy cover 40 is disposed so as to cover the display device 50 and the holder 55 from above, the front, and the sides when the canopy 30 is in the "stored state." The canopy cover 40 is disposed so as to cover the display device 50 and the holder 55 from the front and the sides when the canopy 30 is in the "deployed state." When the canopy 30 is in the "deployed state," the hood 31 covers the display device 50 and the holder 55 from above.

[0066] The display device 50 is connected to an electric wire 51 for supplying electricity to the display device 50 (device main body). 10, the electric wire 51 extends from the display device 50 along the drive frame 33, and then extends from the drive frame 33 to the seat back 2 and into the seat back 2. Then, the electric wire 51 extends from the inside of the seat back 2 to the inside of the seat cushion 1 and is connected to the control device 7.

[0067] <Fragrance device> As shown in FIGS. 1, 5, and 10 to 16, fragrance device 60 is a device that emits fragrance to the outside, and is provided inside and above seat back 2. As shown in FIGS. The air outlet 63 (air outlet 63b) of the fragrance device 60 is disposed in the upper part of the seat back 2 at a position corresponding to the internal space of the canopy 30, and faces the internal space of the canopy 30. Therefore, the fragrance device 60 can emit fragrance toward the interior space of the canopy 30.

[0068] Specifically, the fragrance device 60 comprises an aroma diffuser 61 (device main body) that is attached to the top of the back upper frame 12 and emits a fragrance, a fragrance passage 62 that is connected to the top of the aroma diffuser 61 and allows the fragrance emitted from the aroma diffuser 61 to flow toward the seated occupant, and a blowing member 63 that is provided at the tip of the fragrance passage 62.

[0069] As shown in FIGS. 12 and 13, the aroma diffuser 61 is attached to the top surface of the back upper frame 12 via a connecting bracket 12c (C-shaped bracket) and an assembly bracket 64 (L-shaped bracket). The aroma diffuser 61 is disposed at a position slightly spaced above the back upper frame 12 by an assembly bracket 64. The aroma diffuser 61 is also disposed between the left and right pillar mounting members 12b in the seat width direction. The mounting brackets 64 are generally L-shaped brackets and are fixed to the upper surface of the back upper frame 12 via connecting brackets 12c. A pair of mounting brackets 64 are arranged to sandwich the aroma diffuser 61 from both sides. The mounting brackets 64 are preferably fixed by bolts or welding.

[0070] As shown in FIG. 13, the aroma diffuser 61 is disposed at a position rearward of the headrest 3, and is disposed at a position overlapping with the headrest when the seat is viewed from the front. Therefore, the air containing the fragrance generated from the aroma diffuser 61 can be suitably moved from above (the headrest 3 side) to below (the seat back 2 side).

[0071] As shown in FIG. 11, an opening / closing member 25 is attached to the upper surface of the backboard 20 (mounted backboard 21) at a position corresponding to the aroma diffuser 61. The opening / closing member 25 has, for example, a hinge mechanism and is attached to the assembly backboard 21 so as to be openable and closable in the vertical direction. By moving the opening / closing member 25 from the normal position to the open position, the aroma diffuser 61 and the air conditioner 66 can be exposed from above the assembly backboard 21. By using the opening and closing member 25 in this way, it is possible to easily replace consumable parts (cartridges) of the aroma diffuser 61 and the air conditioner 66. The aroma diffuser 61 and the air conditioner 66 are preferably protected by a cover. In particular, the vehicle seat S1 is equipped with a frame drive device 90 (center-folding frame mechanism) shown in FIG. 4, so that the aroma diffuser 61 (air conditioner 66) can be easily replaced by operating the upper portion of the seat back 2. The aroma diffuser 61 and the air conditioner 66 may not be separate units but may be integrated. For example, the aroma diffuser 61 may be a device that combines the functions of aromatherapy and air conditioning.

[0072] As shown in FIGS. 12 to 14, fragrance passage 62 is a duct such as a duct tube or a duct hose through which air (air containing fragrance) passes. The fragrance passage 62 is flexible and connects the fragrance device 61 and the blowing member 63 . Fragrance passages 62 extend from fragrance device 61 to both sides in the seat width direction and further downward. The left and right fragrance passages 62 pass through pad holes 2aa formed in pad material 2a and extend from the back side to the front side of pad material 2a. A blowing member 63 is attached to each of the extending ends of the left and right fragrance passages 62 .

[0073] Specifically, as shown in FIGS. 14 to 16, the fragrance passage 62 has a duct main body 62a, a duct connecting member 62b, and a duct inserting member 62c. The duct body 62a extends from the aroma diffuser 61 to both sides in the seat width direction, and further extends downward along the rear surface of the pad material 2a. The duct body 62a is disposed between the left and right side portions of the back upper frame 12 in the seat width direction, and also extends across the upper portion of the back upper frame 12 in the up-down direction.

[0074] The duct connecting member 62b is a generally L-shaped connecting pipe, and has an air hole 62ba that allows air containing fragrance to pass through. The duct connection member 62b has a first connection portion 62bb that extends in the vertical direction and is connected to the duct main body 62a, and a second connection portion 62bc that extends in the seat front-rear direction and is connected to the duct insertion member 62c. The duct connection member 62b is disposed at a position facing a pad hole 2aa formed in the pad material 2a.

[0075] The duct insertion member 62c is a connection pipe having a substantially cylindrical shape, and is inserted (embedded) into the pad hole 2aa of the pad material 2a. The duct insertion member 62c has a cylindrical main body 62ca, a ventilation hole 62cb that penetrates the main body 62ca, a flange 62cc formed at the tip of the main body 62ca, a fitting portion 62cd that fits into the blowing member 63, and a protrusion 62ce that protrudes from the outer surface of the main body 62ca. The fitting portion 62cd is formed by cutting out a part of the outer surface of the main body portion 62ca, and is a recessed portion recessed into the inside of the main body portion 62ca. The fitting portion 62cd is detachably fitted into a fitted portion 63d formed on the blowing member 63 in the seat front-rear direction. The protrusion 62ce is formed by cutting and raising a part of the outer surface of the main body 62ca, and is a protruding portion that protrudes outward from the main body 62ca.

[0076] As shown in FIGS. 14 to 16, the duct main body 62a, the duct connecting member 62b, and the duct inserting member 62c are integrally connected and attached to the rear surface side of the pad material 2a. The duct insertion member 62c is inserted into the pad material 2a (pad hole 2aa) and extends from the back surface side to the front surface side of the pad material 2a. When the duct insertion member 62c is embedded in the pad hole 2aa, the flange 62cc and the protrusion 62ce come into contact with the pad material 2a so as to be caught on the pad material 2a. The duct insertion member 62c is caught on the pad material 2a, and thus the movement of the duct insertion member 62c inside the pad material 2a is restricted. A resin pad cover may be separately attached to the back surface of pad material 2a to stably attach fragrance passage 62. As shown in Fig. 14, by forming a holding hole in the pad cover, duct insertion member 62c can be held by the holding hole.

[0077] The blowing member 63 is disposed on the seating surface of the seat back 2 and is an outlet for blowing out air containing a scent. The blowing member 63 has a cylindrical main body 63a, an outlet 63b that penetrates the main body 63a, a flange 63c formed at the tip of the main body 63a, and a fitting portion 63d that fits into the duct insertion member 62c. The air outlet 63b and the flange 63c are arranged so as to be exposed to the seating surface of the seat back 2. The fitted portion 63d is detachably fitted into a fitting portion 62cd formed on the duct insertion member 62c in the seat front-rear direction.

[0078] As shown in FIG. 14, the blowing member 63 is attached to a duct inserting member 62c embedded in the padding material 2a from the surface side of the padding material 2a. When the blowing member 63 is attached to the duct insertion member 62c, the blowing member 63 is disposed so as to sandwich the skin material 2b between the blowing member 63 and the duct insertion member 62c. Therefore, the cover material 2b can be fixed in place in a suitable manner, and the aroma passage 62 can be easily fixed inside the pad material 2a.

[0079] 10, when the canopy 30 is in the "deployed state," the left and right air outlet members 63 (air outlets 63b) are disposed above the front end of the canopy 30 (hood 31, canopy frame 32) and are disposed inside the canopy 30 in the seat width direction. In other words, the air outlets 63b are covered by the canopy 30. Therefore, the fragrance can be suitably dispersed in the interior space of the canopy 30.

[0080] <Air conditioner> The air conditioner 65 is a device that adjusts the air in the internal space of the canopy 30, and is provided inside the seat back 2, as shown in FIGS. An air conditioning vent 68 of the air conditioning device 65 is provided in the canopy frame 32 (drive frame 33 ) and faces the interior space of the canopy 30 . Therefore, the air conditioner 65 can provide good air conditioning in the interior space of the canopy 30, allowing seated occupants to feel comfortable.

[0081] Specifically, the air conditioning device 65 is mounted to the rear of the back upper frame 12 and comprises an air conditioner 66 (device main body) that supplies air, a duct 67 that is connected to the air conditioner 66 and allows the air sent out from the air conditioner 66 to flow out toward the seated occupant, and an air conditioning port 68 provided at the tip of the duct 67. The air conditioning vent 68 is an outlet for sending out air.

[0082] As shown in FIGS. 5, 12 and 13, the air conditioner 66 is provided on the rear surface of the back upper frame 12 at the center in the seat width direction, and is connected via a connecting bracket 12c. As shown in FIG. 10, the duct 67 is an air passage such as a duct tube or duct hose for passing air, and connects the air conditioner 66 and the air conditioning port 68 . Specifically, the duct 67 has a first extending portion extending from the air conditioner 66 to both sides in the seat width direction, a second extending portion extending forward from the first extending portion and passing through the pad material 2a, a third extending portion extending from the second extending portion and passing through the inside of the pivot bracket 80, and a fourth extending portion extending from the third extending portion along the outer surface of the drive frame 33. An air conditioning port 68 is connected to the extending end of the duct 67 . The left and right air conditioning vents 68 are attached to the drive frame 33 and are arranged at intervals in the seat width direction.

[0083] As shown in FIG. 10, the duct 67 extends while being hooked onto a hook rib 33e formed on the outer surface of the drive frame 33. The hook rib 33e extends along the extension direction of the drive frame 33, and can hook the duct 67 as well as the electric wire 51 of the display device 50.

[0084] When the canopy 30 is in the "deployed state" shown in Figure 10, the left and right air conditioning vents 68 are positioned at or around the opening of the canopy 30 (hood 31, canopy frame 32) and face the interior space of the canopy 30. This makes it easier to adjust the air in the interior space of the canopy 30. Also, the opening area at the lower end of the canopy 30 can be covered like an air curtain, allowing the conditioned air to remain in the interior space of the canopy 30.

[0085] <Drive unit> As shown in Figures 1, 2, 5 to 7, and 17 to 19, the drive device 70 is a device that switches the canopy 30, and is attached to the left and right side portions of the seat back 2, and is covered from the sides by an outer drive cover 77 and an inner drive cover 78. More specifically, the drive unit 70 is attached to the outer surface of the back frame 10 (back side frame 11) via a mounting bracket 17. A rotating bracket 80 is attached between the back side frame 11 and the drive member 71 in the seat width direction.

[0086] The drive unit 70 is provided on each of the left and right side portions of the seat back 2, and a drive member 71 (drive motor) is attached to the right side portion of the seat back 2. Note that the drive member 71 is not attached to the left side portion of the seat back 2. As shown in FIGS. 17 to 22, the components of the drive device 70 in the right side portion of the seat back 2 are as follows. The drive unit 70 includes a drive member 71 (drive motor) provided on the right side of the seat back 2, a drive shaft 72 that serves as the axis of the drive member 71, an intermediate plate 73 that supports the drive shaft 72, a guide plate 74, an auxiliary guide plate 75 and a guide ring 76 that guide the rotational movement of the rotating bracket 80 together with the guide plate 74, and an outer drive cover 77 and an inner drive cover 78 that cover these components.

[0087] The drive member 71 is, for example, a drive motor that rotates a drive shaft 72, and has an axis support portion 71a that supports the drive shaft 72, and an attachment hole 71b that is located below the axis support portion 71a and is used for attachment to the attachment bracket 17. The drive member 71 is attached to the mounting bracket 17 by fastening the mounting bolt from the outside while the mounting hole 71b, the mounting hole 74e formed in the guide plate 74, and the mounting hole 17d formed in the mounting bracket 17 are in communication with each other.

[0088] The drive shaft 72 functions as a rotation shaft for the rotation bracket 80 and extends in the seat width direction. The drive shaft 72 passes through the intermediate plate 73 , the guide plate 74 and the guide ring 76 , and is supported by the lower end of the rotating bracket 80 . A gear 72a is formed on the outer circumferential surface of the drive shaft 72. The gear 72a and a gear hole 84a formed in the lower end of the rotating bracket 80 are fitted together.

[0089] The intermediate plate 73 is a plate-shaped reinforcing plate having a plate body 73a, a shaft through hole 73b formed in the center portion of the plate body 73a, and a connecting hole 73c formed to surround the shaft through hole 73b. The shaft through hole 73b is a shaft hole through which the drive shaft 72 passes. A plurality of the connecting holes 73c are formed above the shaft through-hole 73b, and a plurality of the connecting holes 73c are formed below the shaft through-hole 73b. The intermediate plate 73 is connected to the guide plate 74 by fastening a connecting bolt from the outside with the connecting hole 73c communicating with the connecting hole 74c formed in the guide plate 74. The surfaces of the intermediate plate 73 and the guide plate 74 are configured to mate with each other.

[0090] The guide plate 74 and the auxiliary guide plate 75 are plate-shaped members that have the function of increasing the assembly rigidity of the drive member 71 and the function of guiding the rotational movement of the rotational bracket 80 . The guide plate 74 has a plate body 74a, a shaft through hole 74b that penetrates the plate body 74a, a plurality of connecting holes 74c formed to surround the shaft through hole 74b, and a plurality of assembly holes 74d and mounting holes 74e formed at the lower end of the plate body 74a. A guide plate 74f is integrally formed on the inner surface of the plate body 74a, slightly rearward of the shaft through hole 74b and aligned along the shaft through hole 74b. A plurality of fastening holes 74g for fastening an auxiliary guide plate 75 are formed on the inner surface of the guide plate 74f. The auxiliary guide plate 75 has a plate body 75a, a shaft insertion portion 75b, and a plurality of fastening holes 75c.

[0091] The shaft through-hole 74b and the shaft insertion portion 75b are shaft holes through which the drive shaft 72 passes. The guide plate 74 is assembled to the mounting bracket 17 by fastening an assembly bolt from the inside with the assembly hole 74d communicating with the assembly hole 17e formed in the mounting bracket 17.

[0092] Guide plate 74f is connected to auxiliary guide plate 75 by fastening bolts from the inside with fastening holes 74g communicating with fastening holes 75c of auxiliary guide plate 75. The surface of guide plate 74f and the surface of auxiliary guide plate 75 are configured to mate with each other. The front end of the guide plate 74f is cut out to form a guide portion 74h (guide surface) that guides the rotation of the rotation bracket 80. Similarly, the front end of the auxiliary guide plate 75 is also formed with a guide portion 75d (guide surface). A guide ring 76 is fitted and attached to the guide portions 74h and 75d.

[0093] The guide ring 76 is a ring member that guides the rotation of the rotation bracket 80 . The guide ring 76 is provided at a position corresponding to the drive shaft 72, and is supported by the guide plate 74f and the auxiliary guide plate 75. The guide ring 76 is disposed between the guide plate 74f and the rotating bracket 80 in the seat width direction. The bracket bulge 81a of the rotating bracket 80 is inserted into and held by the guide ring 76. The guide ring 76 allows the rotating bracket 80 to rotate smoothly.

[0094] The outer drive cover 77 and the inner drive cover 78 are covers made of resin and are assembled to each other so as to sandwich the drive member 71, drive shaft 72, intermediate plate 73, guide plate 74, auxiliary guide plate 75, guide ring 76 and part of the rotating bracket 80 between them. For example, the outer edge of the outer drive cover 77 and the outer edge of the inner drive cover 78 are engaged with each other, thereby combining these covers 77 and 78 together. A shaft through-hole 78a is formed in a portion of the inner drive cover 78 that corresponds to the drive shaft 72. In addition, a guide portion 78b (guide surface) that guides the rotational movement of the rotating bracket 80 is formed on the periphery of the shaft through-hole 78a. The guide portion 78b has a guide shape (groove shape) that follows the rotation path of the rotating bracket 80 (inner bracket cover 88). The guide portion 78b may be formed on the outer drive cover 77.

[0095] <Rotating bracket> As shown in FIGS. 6, 7, and 17 to 22, the pivoting bracket 80 is a bracket that connects the canopy frame 32 and the drive unit 70 and pivots as the drive unit 70 is driven. The pivot bracket 80 supports the lower portion of the drive frame 33 and pivots in the front-to-rear direction around the drive shaft 72 together with the drive frame 33 as the drive member 71 is driven. The pivot bracket 80 together with the drive frame 33 is covered by an outer bracket cover 87 and an inner bracket cover 88 .

[0096] The rotating bracket 80 has a shape that extends in the vertical direction and is bent in the seat width direction. Of the rotating bracket 80, an upper portion that supports the canopy frame 32 is offset outward in the seat width direction from a lower portion that is connected to the drive shaft 72. Specifically, the pivoting bracket 80 has a bracket inner portion 81 connected to the drive shaft 72, a bracket outer portion 82 that is located outside the bracket inner portion 81 in the seat width direction and supports the lower portion of the drive frame 33, and a bracket connecting portion 83 that extends in the seat width direction and connects the bracket inner portion 81 and the bracket outer portion 82.

[0097] A bracket bulge portion 81a having a generally cylindrical shape that bulges outward in the seat width direction is formed on the inner surface of the lower end of the bracket inner portion 81. A guide ring 76 is slidably attached to the outer peripheral surface of the bracket bulge portion 81a. A shaft through-hole 84 that passes through the side surfaces of the bracket inner portion 81 and the bracket bulging portion 81a in the seat width direction and supports the drive shaft 72 is formed. The shaft through-hole 84 has a gear hole 84a into which the gear 72a of the drive shaft 72 is fitted.

[0098] A cover assembly hole 85 for assembling an outer bracket cover 87 is formed in the side surface of the upper end of the bracket inner portion 81, penetrating in the seat width direction. The pivot bracket 80 is assembled to the outer bracket cover 87 by fastening bolts from the outside with the cover assembly holes 85 communicating with assembly holes 87h formed in the outer bracket cover 87.

[0099] A frame assembly hole 86 is formed in the side surface of the bracket outer portion 82, penetrating in the seat width direction and for assembly of the canopy frame 32 (drive frame 33). A plurality of frame assembly holes 86 are formed at intervals in the vertical direction, and are arranged at positions corresponding to the assembly holes 33c of the drive frame 33 and the assembly bosses 87e of the outer bracket cover 87. The pivot bracket 80 is assembled to the drive frame 33 and the outer bracket cover 87 by fitting the assembly boss 87e from the outside with the frame assembly hole 86 communicating with the assembly hole 33c of the drive frame 33.

[0100] As shown in FIGS. 17 to 22, the outer bracket cover 87 is a resin cover that extends in accordance with the curved shape of the rotating bracket 80. As shown in FIGS. The outer bracket cover 87 has an approximately L-shape and includes a first outer cover portion 87a that extends along the bracket outer portion 82 and covers the bracket outer portion 82 from the outside, and a second outer cover portion 87b that bends continuously from the lower end of the first outer cover portion 87a, extends along the bracket connecting portion 83, and covers the bracket connecting portion 83 from below. A pair of support ribs 87c protruding inward in the seat width direction are formed on both widthwise ends of the first outer cover portion 87a, and a pair of support ribs 87d protruding upward are formed on both widthwise ends of the second outer cover portion 87b. The support ribs 87c and 87d support the drive frame 33 and the rotating bracket 80 by sandwiching them therebetween.

[0101] A plurality of assembly bosses 87e that protrude inward in the seat width direction are formed on the inner surface of the first outer cover portion 87a in the seat width direction. Note that assembly holes may be used instead of assembly bosses. In the case of assembly holes, bolts are attached from the outside. A pair of storage recesses 87f are formed on the inner surface of the first outer cover portion 87a in the seat front-rear direction to store disk-shaped permanent magnets 89. A plurality of storage recesses 87f are formed at intervals in the up-down direction. The permanent magnets 89 stored in the pair of storage recesses 87f are arranged at positions sandwiching the metal drive frame 33 therebetween. The outer bracket cover 87 can hold the drive frame 33 more suitably by having the permanent magnets 89 abut against the drive frame 33 .

[0102] The first outer cover portion 87a has an upper end formed with a cover opening 87g for laterally assembling the drive frame 33 and exposing the drive frame 33 thereto. Further, an assembly hole 87h is formed on the side surface of the second outer cover portion 87b in the seat width direction, penetrating the side surface in the seat width direction and for assembly to the pivot bracket 80 (cover assembly hole 85).

[0103] As shown in FIGS. 6 and 18 to 22, the inner bracket cover 88 is a resin cover that extends in accordance with the curved shape of the rotatable bracket 80. As shown in FIGS. The inner bracket cover 88 comprises a first inner cover portion 88a that extends along the bracket inner portion 81 and covers the bracket inner portion 81 from the inside, a second inner cover portion 88b that bends from the upper end of the first inner cover portion 88a and extends along the bracket connecting portion 83 and covers the bracket connecting portion 83 from above, and a third inner cover portion 88c that bends from the outer end of the second inner cover portion 88b and extends along the bracket outer portion 82 and covers the bracket outer portion 82 from the inside. A pair of support ribs 88d that protrude outward in the seat width direction are formed on both widthwise ends of the first inner cover portion 88a and the third inner cover portion 88c. Also, a pair of support ribs 88e that protrude downward are formed on both widthwise ends of the second inner cover portion 88b. The support ribs 88d and 88e support the drive frame 33 and the rotating bracket 80 by sandwiching them therebetween.

[0104] The inner bracket cover 88 extends in the vertical direction in accordance with the curved shape of the pivot bracket 80. The inner surface of the inner bracket cover 88 is inclined in the vertical direction from the bracket inner portion 81 to the bracket outer portion 82. That is, an inclined surface 88f is formed on the inner surface of the inner bracket cover 88, making the inner surface of the inner bracket cover 88 a smooth surface. This prevents the seated occupant from hitting the inner bracket cover 88, and even if the occupant does come into contact with the inner bracket cover 88, it is possible to prevent the occupant from feeling uncomfortable.

[0105] A boss hole 88g for supporting the drive shaft 72 is formed on the outer surface in the seat width direction of the lower end of the first inner cover portion 88a, the boss hole 88g bulging inward in the seat width direction. The outer surface in the seat width direction of the upper end of the first inner cover portion 88a is formed with an assembly boss hole 88h that bulges inward in the seat width direction and is used for assembly to the pivot bracket 80 (cover assembly hole 85).

[0106] The third inner cover portion 88c has an outer surface in the seat width direction formed with an assembly boss hole 88i that bulges inward in the seat width direction and is used for assembly to the drive frame 33 (assembly hole 33c). The assembly boss 87e of the outer bracket cover 87, the assembly hole 33c, and the assembly boss hole 88i are assembled together.

[0107] The inner bracket cover 88 is connected to the outer bracket cover 87 by the support ribs 88d and 88e engaging with the support ribs 87c and 87d. The outer bracket cover 87 and the inner bracket cover 88 rotate integrally with the rotating bracket 80 around the drive shaft 72 as the center of rotation.

[0108] <Frame drive unit> As shown in Figures 23 and 24, the frame drive device 90 is a device that connects the back upper frame 12 to the back side frame 11 so that the back upper frame 12 can rotate in the front-rear direction of the seat, and is attached to the left side portion of the seat back 2. That is, the frame driving device 90 is a device that causes the back frame 10 to fold in the middle. The frame drive device 90 is attached to the left side portion of the backside frame 11, and is disposed slightly rearward of the drive device 70 (canopy drive device). In other words, the frame drive device 90 and the drive device 70 are configured so that they do not interfere with each other when they are driven.

[0109] A drive member 71 (drive motor) of the drive device 70 is attached to the right back side frame 11. On the other hand, a drive member 91 (drive motor) of the frame drive device 90 is attached to the left back side frame 11.

[0110] As shown in Figures 23 and 24, the frame drive device 90 includes a drive member 91 (drive motor) provided on the inner surface of the left back side frame 11, a drive shaft 92 that serves as the axis of the drive member 91, a drive link 93 provided on the outer surface of the back side frame 11 and connected to the drive shaft 92, and a frame support member 94 that connects the drive link 93 and the back upper frame 12. The drive link 93 and the frame support member 94 are connected by a drive shaft 95 . The frame support member 94 is connected to the back side frame 11 via a drive shaft 95, and is also fixed to the lower end of the back upper frame 12 by welding.

[0111] The driving member 91 is, for example, a driving motor that moves a driving shaft 92 up and down. The driving member 91 has a motor body 91a, an expandable member 91b that expands and contracts up and down from the motor body 91a, and a shaft support portion 91c that is formed at the tip of the expandable member 91b and that supports the driving shaft 92. A mounting hole 91d for mounting the motor body 91a to the side surface of the back side frame 11 is formed at the lower end of the motor body 91a. The drive member 91 is attached to the back side frame 11 by fastening an attachment pin from the inside with the attachment hole 91d communicating with an attachment hole 11c formed in the back side frame 11. The expandable member 91b is a rod member that expands and contracts up and down along the inner surface of the backside frame 11 in accordance with the driving operation of the motor main body 91a.

[0112] The drive shaft 92 penetrates the back side frame 11 and extends in the seat width direction, and is a shaft that connects the expansion and contraction member 91 b and the drive link 93 . In addition, a vertically elongated slot 11d is formed in a portion of the side surface of the back side frame 11 that corresponds to the drive shaft 92. The drive shaft 92 can move up and down inside the elongated hole 11d in accordance with the up and down movement of the expandable member 91b.

[0113] The drive link 93 is a link that connects the back side frame 11 and the frame support member 94. They are connected via a drive shaft 92 and a drive shaft 95. The drive link 93 rotates relative to the drive shaft 92 while rising in accordance with the up and down movement of the drive shaft 92. Then, the frame support member 94 is raised and rotated via the drive shaft 95.

[0114] The frame support member 94 is a frame having a C-shaped cross section, and is rotatably connected to the back side frame 11 via a rotation shaft 96 . The frame support member 94 is welded and fixed to the back upper frame 12 so as to surround the back upper frame 12 from the outside. That is, the frame support member 94 is fixed integrally with the back upper frame 12 and rotates in the front-rear direction together with the back upper frame 12 about the rotation shaft 96 as the drive link 93 rotates.

[0115] With the above-described configuration, the frame drive device 90 can rotate the back upper frame 12 in the front-rear direction of the seat relative to the back side frame 11. That is, as shown in Figures 2 and 4, the seat back 2 can be switched to a "forward-leaning state (center-folded state)" in which the upper portion thereof is tilted forward relative to the lower portion thereof.

[0116] <Side airbag device> As shown in FIGS. 1 and 7, the side airbag device 100 is a device that reduces the impact on a seated occupant when a vehicle is subjected to a side impact. The side airbag device 100 includes an inflatable airbag and an inflator that supplies gas to the inside of the airbag.

[0117] The side airbag device 100 is attached to the outer surface of the mounting bracket 17 and is disposed at a position lower than the drive member 71. At least a part of the side airbag device 100 is disposed at the same position as the drive member 71, the rotating bracket 80, and the canopy frame 32 in the seat width direction. In addition, the side airbag device 100 is disposed at a position slightly forward of the drive member 71, the pivot bracket 80, and the canopy frame 32. Therefore, the side airbag device 100 can be arranged compactly at an outer position in the seat width direction of the seat back 2 without interfering with the drive member 71, the rotating bracket 80, and the canopy frame 32.

[0118] 7, the side airbag device 100 is attached to the outside of the backside frame 11. The fragrance device 60 (fragrance passage 62, blowing member 63) and pad hole 2aa are disposed above the side airbag device 100. This reduces interference between the side airbag and the fragrance device 60, allowing the side airbag to be deployed appropriately.

[0119] With the vehicle seat S1 described above, the fragrance generated from the fragrance device 60 can be efficiently delivered to the seated occupant. Furthermore, the fragrance can be suitably dispersed within the interior space of the canopy 30.

[0120] Second Embodiment Next, a vehicle seat S2 according to a second embodiment will be described with reference to FIGS. It should be noted that the description of the same content as that of the vehicle seat S1 described above will be omitted.

[0121] The vehicle seat S2 is provided with a fragrance device 60A that is provided inside a headrest 3A located above the seat back 2 and that emits a fragrance in the interior space of the canopy 30. The vehicle seat S2 also includes a speaker device 110 that outputs sound toward the seated occupant and an air cell device 120 that bulges out toward the seated occupant, both of which are disposed inside the upper portion of the seat back 2.

[0122] The headrest 3A is formed as a separate body from the seat back 2, and has a head pillar 3c that serves as a framework. The head pillar 3c has a hollow shape. The head pillar 3c is inserted into the left and right pillar mounting members 12b of the back frame 10, and has left and right first pillar extension portions 3d extending in the vertical direction, left and right second pillar extension portions 3e extending forward from the first pillar extension portions 3d, left and right third pillar extension portions 3f extending upward from the second pillar extension portions 3e, and a fourth pillar extension portion 3g connecting the left and right third pillar extension portions 3f. The head pillar 3c further includes a pillar connecting portion 3h that connects the left and right second pillar extension portions 3e and supports the fragrance device 60A from below.

[0123] Fragrance device 60A includes fragrance device 61 attached to head pillar 3c, fragrance passage 62 connected to the bottom of fragrance device 61, and blowing member 63 provided at the tip of fragrance passage 62.

[0124] The aroma diffuser 61 is attached to the upper surface of the pillar connecting portion 3h via an assembly bracket 64 (an L-shaped bracket), and is also fixed by welding to the fourth pillar extending portion 3g. The aroma diffuser 61 is disposed slightly above the pillar connecting portion 3h by an assembly bracket 64. The aroma diffuser 61 is also disposed between the left and right first pillar extensions 3d (second pillar extensions 3e) in the seat width direction. It can be said that the aroma diffuser 61 is mounted upside down inside the headrest 3B.

[0125] The fragrance passage 62 is a flexible duct that connects the fragrance device 61 and the blowing member 63. The fragrance passages 62 extend from the lower end of the fragrance diffuser 61 to both sides in the seat width direction, and are inserted into the head pillars 3c through openings formed in the head pillars 3c. Fragrance passage 62 extends downward through the interior of head pillar 3c and is exposed to the outside through an opening formed at the lower end of head pillar 3c and an opening formed in pillar mounting member 12b. It also penetrates padding 2a and extends from the back side to the front side of padding 2a. A blowing member 63 is attached to each of the extending ends of the left and right fragrance passages 62 .

[0126] As shown in FIG. 25, a loose portion 62aa (excess length of the duct) is formed in part of the aroma passage 62. As a result, even when the headrest 3A moves up and down relative to the seat back 2, the fragrance passage 62 can be suitably extended.

[0127] The blowing member 63 is disposed on the seating surface of the seat back 2 and is an outlet for blowing out air containing a scent. The blowing member 63 is disposed outside the back frame 10 (back upper frame 12) in the seat width direction. That is, it is disposed at a position corresponding to the side portion (bank portion) of the seat back 2. This reduces the discomfort felt by the seated occupant when seated, and improves seating comfort.

[0128] The speaker device 110 is a sound generating device having a speaker 111, and is connected to the control device 7 via a harness (not shown). The speakers 111 are disposed on the left and right sides of the back upper frame 12. The speakers 111 are disposed below the aroma diffuser 61 and above the blowing member 63 (blowout port 63b).

[0129] The air cell device 120 is a seat moving device having an inflatable bag-shaped air cell 121, and is connected to the control device 7 via a harness (not shown). The air cells 121 are attached to the left and right side portions of the back upper frame 12 and the back connecting plate 14. The plurality of air cells 121 are arranged in a row in the seat width direction. The air cell 121 is disposed at a position lower than the aroma diffuser 61 and the speaker 111. The air cell 121 is also disposed at the same height as the blowing member 63 or at a position slightly lower than the blowing member 63.

[0130] The blowout member 63 (blowout port 63b) is preferably disposed below at least a portion of the speaker 111. Furthermore, the blowing member 63 is preferably disposed on the outer side of at least a portion of the speaker 111 in the seat width direction. Alternatively, the blowing member 63 may be disposed on the inner side of the speaker 111 in the seat width direction, or may be disposed at a position on the inner side of at least a portion of the speaker 111. That is, by arranging blowout member 63 at a slight distance from speaker 111, it is possible to prevent scented liquid from adhering to speaker 111.

[0131] The blowing member 63 is preferably disposed at the same height as at least a part of the air cell 121 in the vertical direction, and is also preferably disposed so as to be aligned with the air cell 121 in the seat width direction. That is, it is preferable that the blowing member 63 is disposed close to the air cell 121. This makes it possible to adjust the gap between the seat back 2 and the seated occupant by expanding and contracting the air cell 121. As a result, the scent generated from the blowing member 63 can be appropriately delivered to the seated occupant.

[0132] Even in the vehicle seat S2 described above, the fragrance generated from the fragrance device can be efficiently delivered to the seated person.

[0133] 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 of the same contents as those of the vehicle seats S1 and S2 described above will be omitted.

[0134] The vehicle seat S3 includes a fragrance device 60B provided inside the headrest 3B. The vehicle seat S3 also includes side airbag devices 100 disposed inside the left and right side portions of the seat back 2.

[0135] Fragrance device 60B includes fragrance device 61 attached to head pillar 3c, fragrance passage 62 connected to both left and right ends of fragrance device 61, and blowing member 63 provided at the tip of fragrance passage 62. The aroma diffuser 61 is attached to the upper surface of the pillar connecting portion 3h via an attachment bracket 64 (an L-shaped bracket). The aroma diffuser 61 is arranged by an assembly bracket 64 at a position slightly above and spaced from the pillar connecting portion 3h. It can be said that the aroma diffuser 61 is mounted inside the headrest 3B in a horizontal position.

[0136] The fragrance passage 62 connects the fragrance device 61 and the blowing members 63 (left and right blowing members). The fragrance passages 62 extend outward in the seat width direction from both left and right end portions of the fragrance diffuser 61 and are inserted into the head pillars 3c. Fragrance passage 62 is exposed to the outside through an opening formed in the lower end of head pillar 3c and an opening formed in pillar mounting member 12b, and passes through padding material 2a, extending from the back side to the front side of padding material 2a. A blowing member 63 is attached to the extending end of the fragrance passage 62 .

[0137] The blowing member 63 is an air outlet and an air inlet arranged on the seating surface of the seat back 2. The right-side blowing member 63 is preferably an inlet for sending out air containing the scent, and the left-side blowing member 63 is preferably an outlet for drawing in air containing the scent.

[0138] The blowing member 63 is disposed in front of the back frame 10 (back upper frame 12) in the seat width direction. That is, the blowing member 63 is disposed at a position overlapping the back frame 10 in the seat front-rear direction. Therefore, the blowing member 63 is suitably supported by the back frame 10, and it is possible to increase the rigidity of the blowing member 63. In other words, it is possible to prevent the blowing member 63 and the fragrance passage 62 from being deformed.

[0139] The side airbag device 100 is disposed inside the left and right side portions of the seat back 2, and is disposed below the blowing member 63. More specifically, the blowout member 63 is disposed above the breaking line of the side airbag device 100. Therefore, when an impact is received from outside the vehicle, the side airbag can be suitably inflated and deployed.

[0140] Even in the vehicle seat S3 described above, the fragrance generated from the fragrance device can be efficiently delivered to the seated person.

[0141] <Method for manufacturing vehicle seats> Next, a method for manufacturing the vehicle seat S1 will be described with reference to FIGS. In addition, in the manufacturing method of the vehicle seat S1, a description of manufacturing steps other than those described below will be omitted.

[0142] First, the seat back 2 and the fragrance device 60 are prepared. The seat back 2 includes a back frame 10 and a padding material 2a placed on the front side of the back frame 10. A padding hole 2aa is formed in the padding material 2a. The back frame 10 has left and right back side frames 11 and a back upper frame 12. The fragrance device 60 has a fragrance unit 61 and a fragrance passage 62 (duct) connected to the fragrance unit 61.

[0143] Then, the fragrance device 60 is attached to the interior of the upper part of the seat back 2. Specifically, the aroma diffuser 61 is disposed above the back upper frame 12. Also, a fragrance passage 62 is disposed from the interior of the seat back 2 to the surface of the seat back 2. At this time, the fragrance passage 62 extends downward from the fragrance device 61. Then, it passes through the pad hole 2aa provided at a position lower than the back upper frame 12 and extends from the back surface side to the front surface side of the pad material 2a.

[0144] The above manufacturing method makes it possible to manufacture a vehicle seat that can efficiently deliver the fragrance generated from the fragrance device to the seated occupant.

[0145] <Other embodiments> In the above embodiment, as shown in Figures 1 to 5, the vehicle seat S is equipped with a canopy 30, a canopy cover 40, a display device 50, a fragrance device 60, an air conditioning device 65, a drive device 70, a rotating bracket 80, a frame drive device 90, and a side airbag device 100, but this is not particularly limited. For example, the vehicle seat S may be configured not to include the canopy 30 or the canopy cover 40. Alternatively, the vehicle seat S may be configured not to include the canopy 30, the canopy cover 40, the display device 50, the air conditioning device 65, the drive device 70, the rotating bracket 80, the frame drive device 90, and the side airbag device 100. That is, the vehicle seat S may be configured to include only the fragrance device 60 among the above-mentioned components.

[0146] In the above embodiment, as shown in Figures 2 and 6, the vehicle seat S is equipped with a drive unit 70, which drives the canopy 30 to switch between a "storage state" and an "expanded state," but this is not particularly limited. For example, the vehicle seat S may not be equipped with the drive unit 70, and the canopy may be switched between the "stored state" and the "deployed state" by manual operation.

[0147] In the above embodiment, as shown in FIGS. 1, 12, and 13, the fragrance device 60 (fragrance unit 61) is mounted inside the seat back 2, but this is not particularly limited. For example, the fragrance device 60 (fragrance device 61) may be attached to the canopy 30. Specifically, the fragrance device 60 (fragrance device 61) may be a portable, small fragrance device that is attached to the canopy frame 32 (drive frame 33). The small fragrance device (air outlet) should preferably be oriented toward the interior space of the canopy 30.

[0148] In the above embodiment, as shown in FIG. 14, the fragrance device 60 (fragrance passage 62) penetrates the padding 2a of the seat back 2, but it does not have to penetrate the padding 2a. For example, the fragrance passage 62 may extend from the fragrance device 61 outward and downward in the seat width direction, and the blowing member 63 (the blowing outlet 63b) may be disposed at a side portion of the seat back 2. The fragrance passage 62 may extend downward from the headrest 3, and the outlet 63b may be disposed in the gap between the seat back 2 and the headrest 3 in the vertical direction.

[0149] In the above embodiment, a vehicle seat used in an automobile was described as a specific example, but the present invention is not limited to this and can also be used as a vehicle seat for trains, buses, etc., as well as airplanes, ships, etc.

[0150] In this 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 does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. [Explanation of symbols]

[0151] First Embodiment S1 Vehicle seats (vehicle seats) 1 seat cushion 1a, 2a, 3a pad material 2aa Pad hole 1b, 2b, 3b Skin material 1c Cushion Frame 2 seat backs 3 headrests 3c head pillar 4 Reclining device 4a Reclining unit 4b Rotating shaft 4c spiral spring 5 Height device 5a Link 1 5b Second Link 6 Rail device 6a Lower rail 6b Upper rail 6c Rail operation lever 7 Control Device 10 Back Frame 11 Backside Frame 11a, 11b Protruding frame 11c mounting hole 11d long hole 12 Back upper frame 12a Upper frame body 12b Pillar mounting member 12c Connecting bracket (C-shaped bracket) 13 Back lower frame 14 Back connecting plate 14a Mounting part 15 Wire material 16 Support Plate 17 Mounting bracket 17a Inside wall 17b Outer wall 17c Connecting wall 17d mounting hole 17e Assembly hole 18 Fastening bolt 19 Connection bolt 20 Backboard 21 Assembled backboard 21a board body 21b protruding outer edge 21c Board recess 21d Frame assembly part 22 Retractable Backboard 22a board body 22b protruding outer edge 22c protruding flange 22d Board recess 22e Mating hole 23 Board Frame 23a Assembly hole 23b Engagement hole 23c, 23d Frame connection part 24 Rear Backboard 24a Rear wall 24b Upper wall 24c Bottom wall 24d Side wall part 24e mounting holes 24f cutout 24g mating protrusion 24h Engagement protrusion 24i Board extension 25 Opening and closing member 30 Canopy 31 Canopy 32 Canopy frame 33 Drive frame 33a, 34a Side frame 33b, 34b upper frame 33c Assembly hole (assembly part) 33d Frame protrusion 33e Retaining rib 34 Follower frame 40 Canopy Cover 41 Rear canopy cover 45 Forward canopy cover 46 Cover body 47 Fitting recess (fitting part) 50 Display equipment 51 Electric wire 55 Holder 60 Fragrance device 61 Air freshener 62 Aromatic passage (duct) 62a Duct body 62b Duct connection member 62ba ventilation hole 62bb 1st connection 62bc 2nd connection part 62c Duct insert 62ca main body 62cb ventilation hole 62cc flange 62cd mating part 62ce protrusion 63 Blowout material 63a Main body 63b Air outlet 63c flange 63d Mated part 64 Assembly bracket (L-shaped bracket) 65 Air conditioner 66 Air conditioner 67 Duct (1st duct, air conditioning passage) 68 Air conditioning vent (first air conditioning vent, ventilation vent) 70 Drive unit (canopy drive unit) 71 Driving member (driving motor) 71a Shaft support part 71b Mounting hole 72 Drive shaft 72a Gear (Mating gear) 73 Intermediate Plate 73a Plate body 73b Shaft through hole 73c connection hole 74 Guide plate 74a Plate body 74b Shaft through hole 74c connection hole 74d Assembly hole 74e mounting holes 74f Guide plate 74g Fastening hole 74h Guide section 75 Auxiliary guide plate 75a Plate body 75b Shaft insertion part 75c fastening hole 75d Guide part 76 Guide Ring 77 Outer drive cover 78 Inner drive cover 78a Shaft through hole 78b Guide part 80 Rotating bracket 81 Bracket inner part 81a Bracket bulge 82 Outer part of bracket 83 Bracket connection part 84 shaft through hole 84a gear hole 85 Cover assembly hole 86 Frame assembly holes 87 Outer bracket cover 87a First outer cover part 87b Second outer cover part 87c, 87d Support ribs 87e Assembly boss 87f Storage recess 87g Cover opening 87h Assembly hole 88 Inner bracket cover 88a First inner cover part 88b Second inner cover part 88c Third inner cover part 88d, 88e Support ribs 88f slope 88g boss hole 88h, 88i assembly boss hole 89 Permanent Magnets 90 Frame drive unit 91 Driving member (driving motor) 91a Motor body 91b Elastic member 91c Shaft support part 91d Mounting hole 92 Drive shaft 93 Drive link 94 Frame support member 95 Drive shaft 96 Rotating shaft 100 Side airbag device Second Embodiment S2 Vehicle Seat 3A headrest 3c head pillar 3d First pillar extension 3e Second pillar extension 3f Third pillar extension 3g Fourth pillar extension 3h Pillar connection 60A Air Conditioner 61 Air freshener 62 Aromatic passage (duct) 62aa Loose part 63 Blowout material 64 Assembly bracket (L-shaped bracket) 110 Speaker device 111 Speaker 120 Air cell device (seat moving device) 121 Air Cell Third Embodiment S3 Vehicle Seat 3B headrest 3c head pillar 3d First pillar extension 3e Second pillar extension 3f Third pillar extension 3g Fourth pillar extension 3h Pillar connection 60B Air conditioner 61 Air freshener 62 Aromatic passage (duct) 63 Blowout material 64 Assembly bracket (L-shaped bracket)

Claims

1. Seat back and a fragrance device that is provided on the seat back or at a position above the seat back and that emits a fragrance; The seat back includes a back frame that forms a skeleton of the seat back, and a padding material that is placed on a front side of the back frame, The back frame includes left and right back side frames provided on the sides in the seat width direction, and back upper frames provided in upper portions of the left and right back side frames, The fragrance device is A fragrance diffuser that emits a fragrance, a fragrance passage connected to the fragrance device and allowing the fragrance generated from the fragrance device to flow toward the seat occupant through a pad hole formed in the pad material, the aroma diffuser is disposed at a position above the back upper frame, The aromatic passage is Extending downward from the aroma diffuser, The vehicle seat extends from the back surface side to the front surface side of the pad material through the pad hole provided at a position lower than the back upper frame.

2. A headrest is provided which is attached to an upper portion of the seat back or at a position higher than the seat back, The vehicle seat according to claim 1, wherein the aroma diffuser is attached to an upper surface of the back upper frame, is positioned rearward of the headrest, and is positioned so as to overlap the headrest in a front view.

3. The pad hole is formed in the seating surface of the seat back, 3. The vehicle seat according to claim 2, wherein the fragrance passage passes through the pad hole and communicates with the seating surface of the seat back.

4. The vehicle seat according to claim 3 , wherein the aroma diffuser is attached to an upper surface of the back upper frame via an attachment bracket, and is disposed above and spaced apart from the back upper frame.

5. a headrest provided above the seat back and configured separately from the seat back; The aroma diffuser is provided inside the headrest, 2. The vehicle seat according to claim 1, wherein the fragrance passage extends from the headrest to the seat back, passes through the pad hole in the seat back, and extends from the rear surface side to the front surface side of the pad material.

6. The headrest has a head pillar, the back frame includes left and right pillar mounting members that are provided at an upper end of the back frame, are arranged at an interval in the seat width direction, and support the head pillars, The vehicle seat according to claim 5, wherein the aroma diffuser is disposed between the left and right pillar mounting members in the seat width direction.

7. the head pillar has a hollow shape, 7. The vehicle seat according to claim 6, wherein the fragrance passage is flexible and extends through the hollow interior of the head pillar.

8. the aroma passage has a duct insert member provided in the pad hole and extending from the back side to the front side of the pad material along the pad hole, The duct insert member is a protrusion protruding from an outer surface of the duct insertion member; The vehicle seat according to claim 1 , wherein the protrusions are restricted from moving within the pad by contacting the pad.

9. the seat back includes a cover material that covers the back frame and the pad material, The fragrance passage has a blowing member attached to an extending end of the duct insert member, The vehicle seat according to claim 8 , wherein the blowing member is attached to an extending end of the duct insertion member from a surface side of the seat back, and is disposed so as to sandwich the upholstery material between the blowing member and the duct insertion member.

10. a frame drive device that connects the back upper frame to the left and right back side frames so as to be rotatable in the front-rear direction of the seat; The vehicle seat according to claim 1 , wherein the aroma diffuser is mounted on an upper surface of the back upper frame or mounted on the upper surface of the back upper frame via an assembly bracket.

11. A side airbag device is provided to cushion an impact applied from the side of the vehicle, The side airbag device is attached to the outer side of the backside frame, The vehicle seat according to any one of claims 1 to 9, wherein the fragrance passage and the pad hole are disposed above the side airbag device.

12. a canopy that is provided on an upper portion of the seat back and that switches between a state in which it is stored in the seat back side and a state in which it is deployed on the front side of the seat back and covers the head of a seated occupant; The vehicle seat according to any one of claims 1 to 9, wherein an outlet of the fragrance device is provided on a surface of the seat back and faces toward an interior space of the canopy.

Images