JP7448767B2 - Vehicle seat device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle seat device that includes a rotation mechanism that has an annular rotating member to which a seat cushion frame that supports a seat cushion is attached, and a base member that rotatably supports the annular rotating member.

2. Description of the Related Art A vehicle seat device is known from Patent Document 1, in which a seat is rotatable with respect to a floor, and air is blown from the floor side to a seating surface of the seat through a duct.

Japanese Patent Application Publication No. 2010-137651

In the structure disclosed in Patent Document 1, the blower for blowing air is disposed outside the rotation mechanism in the width direction on the left and right sides, so the size of the seat device in the width direction is unavoidable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle seat device that can be made compact while having an air blowing structure that includes a blower in addition to a rotation mechanism.

In order to achieve the above object, the present invention provides a vehicle seat device including a rotation mechanism having an annular rotating member to which a seat cushion frame supporting a seat cushion is attached and a base member rotatably supporting the annular rotating member. , a blower disposed inside the outer periphery of the seat cushion frame in a plan view, and a duct having an opening serving as an inlet or an air outlet and having one end connected to the blower, the seat cushion The blower is disposed above the upper end of the annular rotating member in front of the cushion-side pressure receiving member attached to the frame, and the duct has one end connected to the blower above the annular rotating member. A part of the intermediate portion is accommodated in a circular accommodating portion that is opened at least upwardly and is formed in the center portion of the annular rotating member at a position where the intermediate portion overlaps the cushion-side pressure receiving member in a plan view; At least a part of the opening disposed on the other end side of the duct is disposed radially inside the annular rotating member in plan view, and the upper end opening edge of the opening is connected to the cushion side pressure receiving pressure. The first feature is that it protrudes upward from the member.

In addition to the configuration of the first feature, the present invention provides an annular rotating member in which at least an inner portion along the radial direction of the annular rotating member is fixedly arranged with the base member and at least a portion thereof is above the base member. A second feature is that the opening is disposed radially inward of the upper fixing member in a plan view.

In addition to the configuration of the first or second feature, the present invention has a third feature that the one end of the duct is connected to the blower at a position overlapping the annular rotating member in plan view. .

In addition to any one of the first to third characteristic configurations, the present invention provides that the duct has one end connected to the blower and opens toward the seat cushion so that the annular rotating member is connected to the duct. a duct main portion having a first opening at the other end that is at least partially disposed radially inward; and a second opening that opens toward the seat back side that is disposed above the rear portion of the seat cushion. A fourth feature is that the duct is configured to have a duct branch part branching from the duct main part.

In addition to the fourth feature of the present invention, a fifth feature of the present invention is that a part of the duct branch portion is disposed radially inside the annular rotating member in plan view.

In addition to the configuration of the first feature, the present invention provides that seat back frames supporting a seat back disposed above a rear portion of the seat cushion are arranged to be lined up at mutually spaced positions and extend in the vertical direction. The seat cushion frame includes a pair of seat back side frames, an upper frame that connects the upper ends of the seat back side frames, and a lower frame that connects the lower ends of the pair of seat back side frames. includes a pair of side frames that extend linearly and are supported by the annular rotating member, an end connecting member that connects one end of the side frames, and a connecting member that connects the other end of the pair of side frames. The cushion-side pressure receiving member receives a load from above the seat cushion, and has a plurality of seat springs made of metal wires curved in a zigzag pattern, and the one end connecting member and The blower is placed between the other end connecting members, the blower is attached to the lower part of the one end connecting member via an attachment member, and the opening that opens toward the seat cushion side is connected to the seat spring in a plan view. The sixth feature is that they are arranged between each other.

Furthermore, in addition to the configuration of the sixth feature, the present invention has a seventh feature that the seat cushion is formed with a passage through which air blown out from the opening serving as the air outlet flows.

According to the first feature of the present invention, the blower is located inside the outer periphery of the seat cushion frame in plan view, and at least a part of the opening of the duct connected to the blower is located inside the annular rotating member in plan view. Since it is arranged radially inward, the vehicle seat including the blower and the duct can be configured compactly, and the relative arrangement of the opening of the duct with the annular rotating member can be made compact.

In addition, since the upper opening edge of the opening protrudes above the cushion-side pressure receiving member which is above the annular rotating member in side view, the opening can be placed closer to the occupant while avoiding interference with the annular rotating member. can be placed.

Further, one end of the duct is connected to the blower above the upper end of the annular rotating member, and a part of the middle part of the duct is accommodated in the circular housing part that the annular rotating member has at its center. A part of the intermediate portion of the seat device is disposed at a position overlapping with the accommodating portion of the annular rotating member in a side view, so that it is possible to suppress the vehicle seat device from increasing in size in the vertical direction.

According to a second feature of the present invention, the opening of the duct is located inside, in plan view, the annular upper fixing member that sandwiches at least the radially inner portion of the annular rotating member between the base member and the annular rotating member. Therefore, even if the upper fixing member covers at least the inner portion of the annular rotating member along the radial direction, the opening can be arranged while avoiding interference with the upper fixing member.

According to the third feature of the present invention, since one end of the duct is connected to the blower at a position overlapping the annular rotating member in a plan view, the blower can be disposed closer to the annular rotating member and radially extending from the annular rotating member. The vehicle seat device can be made more compact.

According to the fourth feature of the present invention, the duct includes a duct main part having a first opening at the other end, and a duct branch part having a second opening and branching from the duct main part. The first opening opens toward the seat cushion and is at least partially disposed inside the annular rotating member in the radial direction, and the second opening is disposed above the rear of the seat cushion. An air conditioning mechanism compatible with both the seat cushion and the seat back can be configured compactly.

According to the fifth feature of the present invention, a part of the duct branch part is arranged radially inside the annular rotating member in plan view, so that the arrangement of the duct branch part can be made compact.

According to the sixth feature of the present invention, the cushion side has a plurality of seat springs formed by zigzag-curving metal wires between the one end connecting member and the other end connecting member that constitute a part of the seat cushion frame. The pressure receiving member is spanned so as to receive a load from above the seat cushion, one end of the blower is attached to the lower part of the connecting member via the attachment member, and the opening facing the seat cushion is flat. Since the seat springs are located visually between the seat springs, it is easy to install the blower to the seat cushion frame, and it also prevents the cushion side pressure receiving member from having an adverse effect on air circulation at the duct opening. It is possible to improve the visibility from above of the cushion side pressure receiving member when checking the installation state of the cushion side pressure receiving member.

Furthermore, according to the seventh feature of the present invention, since the seat cushion is formed with a passage through which the air blown out from the opening serving as the air outlet flows, the air can be blown out from the seating surface of the seat cushion.

FIG. 3 is a perspective view showing a state in which the seat frame of the first embodiment is placed on a rotation mechanism. FIG. 3 is a plan view of the cushion-side pressure receiving member and the rotation mechanism viewed from above. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. FIG. 4 is a diagram of the slide rail and the rotation mechanism viewed from the direction of arrow 4 in FIG. 3; FIG. 4 is a diagram of the slide rail and the rotation mechanism viewed from the direction of arrow 5 in FIG. 3; 5 is a sectional view taken along line 6-6 in FIG. 4. FIG. It is a perspective view of a seat cushion and a seat back. FIG. 5 is a sectional view taken along line 8-8 in FIG. 4, comparing a state (a) in which the lock member is in a locked position and a state (b) in which the lock member is in an unlocked position. 9 is a sectional view taken along line 9-9 in FIG. 8. FIG. FIG. 3 is a plan view corresponding to FIG. 2 of the second embodiment. It is a perspective view of a seat cushion and a seat back.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, "front and back," "left and right," and "up and down" refer to the directions seen from the seated occupant when the seat is in a forward-facing position.

The first embodiment of the present invention will be described with reference to FIGS. 1 to 9. First, in FIG. 1, a vehicle seat device is arranged such that the seat 11 is spaced apart from each other in the left and right direction so as to be slidable. The seat 11 includes a pair of slide rails 13 that extend linearly in parallel with each other, and a rotation mechanism 14 that is movable along the slide rails 13 while rotatably supporting the seat 11.

The seat frame 15 of the seat 11 includes a seat cushion frame 16 that supports a seat cushion 11a, and a seat that is connected to the seat cushion frame 16 so as to support a seat back 11b that is arranged above the seat cushion 11a. A back frame 17 is provided.

The seat cushion frame 16 connects a pair of side frames 16a arranged so as to extend linearly in the front-back direction so as to be spaced apart from each other in the left-right direction, and the front ends of the side frames 16a. It has a pan frame 16b as one end connecting member, and a rear pipe 16c as the other end connecting member that connects the rear ends of the pair of side frames 16a.

In FIG. 2, a cushion-side pressure receiving member 19 that receives a load from above the seat cushion 11a is spanned between the pan frame 16b and the rear pipe 16c of the seat cushion frame 16. This cushion-side pressure receiving member 19 has a plurality of seat springs 20 (four in this embodiment) formed by curving a metal wire in a zigzag manner so as to meander from side to side. The seat springs 20 are arranged symmetrically, and the adjacent seat springs 20 are connected to each other by a plurality of resin intermediate connecting members 21 that are integrally molded with the seat springs 20 by insert molding. .

The front end portions of the plurality of seat springs 20 are respectively engaged with locking portions 22 provided on the pan frame 16b of the seat frame 15. Further, the rear end portions of the seat springs 20 adjacent to each other are engaged with the rear pipe 16c of the seat frame 15, and are made of a resin rear end portion connecting member 23 integrally molded with the seat spring 20 by insert molding. The rear end connecting member 23 is formed to cover the rear pipe 16c.

Referring again to FIG. 1, the seat back frame 17 includes a pair of seat back side frames 17a extending in the vertical direction so as to be spaced apart from each other in the left and right direction, and an upper end of the seat back side frames 17a. It has an upper frame 17b that connects the parts, and a lower frame 17c that connects the lower end parts of the pair of seat back side frames 17a.

A back side pressure receiving member 24 made of resin or the like so as to be elastically deformable is arranged between the pair of seat back side frames 17a, and this back side pressure receiving member 24 has an upper connecting wire 25 and a lower connecting wire 26. It spans between the left and right seat back side frames 17a via.

3 to 6, the seat cushion frame 16 is placed on the rotation mechanism 14, and the rotation mechanism 14 includes a base member 29 movable along the slide rail 13. a rotating member 30 that supports the seat frame 15 and is rotatably supported by the base member 29; A cover member 31 is provided as an upper fixing member that sandwiches at least an inner portion of the rotating member 30 along the rotational direction with the base member 39, and the cover member 31 is fixed to the base member 29.

The base member 29 includes an annular first bottom wall 29a, a cylindrical first side wall 29b rising upward from the outer periphery of the first bottom wall 29a, and a cylindrical first side wall 29b extending outward from the upper end of the first side wall 29b. The first flange 29c is formed in a rectangular shape.

The cover member 31 also includes an annular second bottom wall portion 31a that abuts the first bottom wall portion 29a of the base member 29 from above, and rises slightly upward from the outer periphery of the second bottom wall portion 31a. A cylindrical second side wall portion 31b, a first tapered portion 31c formed to increase in diameter upwardly and connected to the upper end of the second side wall portion 31b, and an upper end of the first tapered portion 31c. The second bottom wall portion 31a has an annular first flat wall portion 31d connected to the base member 29, and a cylindrical third side wall portion 31e rising upward from the outer periphery of the first flat wall portion 31d. is coupled to the first bottom wall portion 29a with a plurality of rivets 32.

The rotating member 30 includes a second tapered portion 30a that is disposed at a position facing the first tapered portion 31c of the cover member 31 from the outside and is formed to have a larger diameter toward the top, and the cover. A cylindrical fourth side wall 30b rising upward from the upper end of the second tapered portion 30a so as to face the second side wall 31b of the member 31 from the outside; It has a second flange portion 30c that projects, and the second flange portion 30c is formed in a rectangular shape. That is, the second tapered portion 30a, which is the radially inner portion of the annular rotating member 30, is sandwiched between the cover member 31 and the base member 29.

A bracket 33 extending parallel to the slide rail 13 is fastened to the second flange 30c with a plurality of first bolts 34 and a plurality of second nuts 35. The side frames 16a of the seat cushion frame 16 in the seat frame 15 are coupled to this bracket 33, and the side frames 16a extend linearly and extend in a straight line while being arranged at mutually spaced positions. is fixedly disposed on the second flange portion 30c.

The rotation member 30 is rotatably supported via a bearing 37 by an annular rotation support portion 36 of the base member 29, and the rotation support portion 36 is connected to the first bottom wall portion 29a of the base member 29. The first side wall portion 29b and the first side wall portion 29b are formed to have a substantially L-shaped cross section.

The bearing 37 includes balls 39 held at multiple locations in the circumferential direction of an annular retainer 38, and an annular recess 40 for rolling the balls 39 is formed in the first tapered portion 31c of the rotating member 30. be done.

By the way, in the central part of the rotating member 30, a circular accommodating part 41 constituted by the second tapered part 30a and the fourth side wall part 30b of the rotating member 30 is open upwardly and also downwardly. The cover member 31 is housed and disposed within the housing portion 41 thereof.

By the way, the slide rail 13 is composed of a fixed rail 45 extending in the longitudinal direction of the vehicle and a movable rail 46 slidably fitted to the fixed rail 45. is fixed to the floor surface 47 of the vehicle via a front bracket 48, and the rear part of the fixed rail is fixed to the floor surface 47 via a rear bracket 49. Moreover, the front bracket 48 is formed higher than the rear bracket 49, and the fixed rail 45, that is, the slide rail 13 extends in the longitudinal direction of the vehicle and is inclined to become lower toward the rear in the longitudinal direction of the vehicle. .

7 and 8, the locking state and unlocking of the rotating member 30 with respect to the base member 29 and the cover member 31 can be switched by operating the locking member 52 supported by the rotating member 30. A rattling suppressing member 53 interlocked with the operation of the locking member 52 is disposed between the cover member 31 and the rotating member 30.

Between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30, a tapered push-out member 54 whose diameter increases upward is disposed. Accommodation holes 55 that extend in the circumferential direction of the extrusion member 54 are provided at a plurality of locations spaced apart in the circumferential direction of the extrusion member 54, and the first tapered portion 31c of the cover member 31 and the rotation A rattling suppressing member 53 interposed between the second tapered portions 30a of the member 30 is accommodated in the accommodation hole 55.

On the other hand, the locking member 52 is rotatably supported on the rotating member 30 via a shaft 51 having a vertical axis, and the locking member 52 is attached to the cover of the rotating member 30 as shown in FIG. 7(a). A lock position in which the member 31 engages with the first tapered portion 31c to prevent rotation of the rotating member 30, and a lock position in which the member 31 is disengaged from the first tapered portion 31c as shown in FIG. 7(b). The rotary member 30 can be rotated between an unlocked position that allows rotation of the rotary member 30, and is urged by a spring 56 to rotate toward the locked position.

The connecting arm portion 52a of the locking member 52 is inserted into an insertion hole 57 formed in the second tapered portion 30a of the rotating member 30, and the distal end portion of the connecting arm portion 52a is formed in the pushing member 54. The locking member 52 is connected to the push-out member 54 by inserting the distal end of the connecting arm portion 52a into the connecting hole 58. As shown in FIG. 7(b), the connecting arm portion 52a is connected to the connecting hole 58 when the locking member 52 is in the unlocked position, and presses the pushing member 54 in the rotation direction. Pressure will be applied from the connecting arm 52a.

Further, in the locking position shown in FIG. Although it engages with the second through hole 60 formed in the first tapered portion 31c of the cover member 31, in the unlocked position shown in FIG. 7(b), it separates from the second through hole 60 and the cover member 31, and the engaging arm portion 52b operates to straddle the pushing member 54 between the locked position and the unlocked position.

A recess 61 for accommodating a part of the rattling suppressing member 53 is formed in the second tapered portion 30a of the rotating member 30 so that the rattling suppressing member 53 can be tightly fitted therein. .

The rattling suppressing member 53 has a slope 53a whose height gradually decreases as it advances in a moving direction 62 of the pushing member 54 in accordance with the movement of the locking member 52 from the unlocked position to the locked position. The recess 61, which is formed into a wedge shape and enables the rattling suppressing member 53 to be tightly fitted, has a slope 61a on the recess side opposite to the slope 53a, while suppressing the rattling. It is formed into a triangular shape so as to accommodate a part of the member 53.

Further, a coil spring 63 is compressed between the front end along the movement direction 62 of both longitudinal ends of the accommodation hole 55 formed in the extrusion member 54 and the rattling suppressing member 53. The vibration suppressing member 53 is urged in a direction opposite to the moving direction 62 by the spring force exerted by the coil spring 63.

When the locking member 52 is in the locking position, the slope 53a of the rattling suppressing member 53 is tightly pressed against the slope 61a of the recess 61 on the recess side, as shown in FIG. 7(a). Due to this contact, the rattling suppressing member 52 comes into close contact with the rotating member 30 and the cover member 31, thereby preventing rattling of the rotating member 30.

Further, when the locking member 52 is in the unlocked position, as shown in FIG. The rattling suppressing member 53 comes into contact with the suppressing member 53 and is pushed in the moving direction 62 against the force of the coil spring 63, so that the slope 53a of the rattling suppressing member 53 moves into the recessed part. The rattling suppressing member 53 moves to the side away from the side slope 61a, and the rattling preventing state is released.

A blower 65 is disposed inside the outer periphery of the seat cushion frame 16 in plan view, and in this embodiment, behind the front edge of the pan frame 16b that constitutes the front part of the seat cushion frame 16. An opening 67 serving as an air outlet is formed at the other end 66b of the duct 66, one end 66a of which is connected to the blower 65.

The blower 65 is attached to the lower part of the pan frame 16b via an attachment member 68, and at least a portion of the opening 67 (the front portion in this embodiment) is connected to the annular rotating member 30 in plan view. The cover member 31 is disposed on the radially inner side of the cover member 31 . Moreover, the opening portion 67 opens toward the seat cushion 11a side, and as clearly shown in FIG. It is arranged between a pair of adjacent seat springs 20.

Further, the other end 66b of the duct 66 slightly protrudes above the cushion-side pressure receiving member 19, and the upper end opening edge 67a of the opening 67 is larger than the annular rotating member 30 in side view. placed above. That is, as shown in FIG. 3, the upper end opening edge 67a of the opening 67 is arranged above the virtual plane PL passing through the upper surface of the second flange 30c of the annular rotating member 30.

Further, at least a portion of the duct 66 is accommodated in a circular accommodating portion 41 that the annular rotating member 30 has at its center. In this embodiment, one end 66a of the duct 66 is arranged above the upper end of the annular rotating member 30, that is, above the virtual plane PL, and overlaps with the annular rotating member 30 in plan view, so that the blower 65 At least the intermediate portion (in this embodiment, the intermediate portion) of the duct 66 is arranged to overlap with the annular rotating member 30 when viewed from the side, and is housed in the housing portion 41 .

In FIG. 9, the seat cushion 11a is made up of a plurality of laminated pads wrapped in a skin material, and a passage 69 through which air blown out from the opening 67 of the duct 66 flows is formed between the plurality of pads. Vent holes 70 are formed between the pads and communicate with the passages 69 in the surface pad, and air from the vent holes 70 passes through the skin material and is blown out from the seating surface.

Next, to explain the operation of the first embodiment, the rotation mechanism 14 that rotates the seat 11 includes an annular rotation member 30 to which the seat cushion frame 16 is attached, and a base that rotatably supports the annular rotation member 30. One end 66a of a duct 66 having an opening 67 serving as an air outlet is connected to a blower 65 having a member 29 and disposed inside the outer periphery of the seat cushion frame 16 in plan view. is disposed radially inside the annular rotating member 30 in a plan view, so that the vehicle seat device including the blower 65 and the duct 66 can be configured compactly, and the opening 67 of the duct 66 The relative arrangement with the annular rotating member 30 can be made compact.

Further, at least an inner portion of the annular rotating member 30 along the radial direction is between the base member 29 and a cover member 31 formed in an annular shape and at least a portion of which is fixedly arranged above the base member 29. Since the opening portion 67 is disposed on the radially inner side of the cover member 31 in a plan view, at least the inner portion of the annular rotating member 30 in the radial direction is covered with the cover member 31. The opening 67 can also be arranged while avoiding interference with the cover member 31.

Further, since the upper end opening edge 67a of the opening 67 is disposed above the annular rotating member 30 in side view, the opening is positioned closer to the passenger while avoiding interference with the annular rotating member 30. 67 can be placed.

Further, the annular rotating member 30 is formed to have at least a circular accommodating part 41 in the center that is open upward, and at least a part of the duct 66 is accommodated in the accommodating part 41. At least a portion thereof is disposed at a position overlapping with the annular rotating member 30 in a side view, so that it is possible to suppress the vehicle seat device from increasing in size in the vertical direction.

Further, one end portion 66a of the duct 66 is connected to the blower 65 above the upper end of the annular rotating member 30, and is arranged so that at least a middle portion of the duct 66 overlaps with the annular rotating member 30 in a side view. Therefore, it is possible to suppress the vehicle seat device from increasing in size in the vertical direction.

Further, one end 66a of the duct 66 is connected to the blower 65 at a position overlapping the annular rotating member 30 in a plan view, so the blower 65 is disposed closer to the annular rotating member 30. The vehicle seat device can be made more compact in the radial direction.

The cushion-side pressure receiving member 19, which receives the load from above the seat cushion 11a, has a plurality of seat springs 20 made of metal wires curved in a zigzag pattern, and is hung between the pan frame 16b and the rear pipe 16c of the seat cushion frame 16. The blower 65 is attached to the lower part of the pan frame 16b via an attachment member 68, and the opening 67 opening toward the seat cushion 11a is arranged between the seat springs 20 in plan view. Therefore, the blower 65 can be easily attached to the seat cushion frame 16, and the cushion side pressure receiving member 19 can be prevented from having an adverse effect on the air circulation at the opening 67 of the duct 66. The visibility from above of the cushion-side pressure receiving member 19 when checking the attachment state of the duct 66 can be improved.

Further, since a passage 69 is formed in the seat cushion 11a through which the air blown out from the opening 67 serving as the air outlet flows, the air can be blown out from the seating surface of the seat cushion 11a.

A second embodiment of the present invention will be described with reference to FIGS. 10 and 11, but parts corresponding to the first embodiment will only be illustrated with the same reference numerals, and details will be explained. Further explanation will be omitted.

A blower 65 is arranged behind the front edge of the pan frame 16b that constitutes the front part of the seat cushion frame 16, and a duct 72 is connected to the blower 65.

The duct 72 has one end 75a connected to the blower 65, and has a first opening 73 that opens toward the seat cushion 11a and is at least partially disposed inside the annular rotating member 30 in the radial direction. A duct branching from the duct main part 75 and having a duct main part 75 at the other end and a second opening 74 opening toward the seat back 11b side located above the rear part of the seat cushion 11a. The branch portion 76 is configured to include a branch portion 76.

The first opening 73 opens toward the seat cushion 11a side, as in the first embodiment, and in plan view, a plurality of seat springs forming the cushion side pressure receiving member 19. The seat springs 20 are arranged between a pair of seat springs 20 that are adjacent to each other.

Further, one end portion 76a of the duct branch portion 76 is connected to the duct main portion 72a near the first opening 73, and extends rearward from the duct main portion 72a to the rear of the seat back 11b. The second opening 74 is formed at the other end 76b of the duct branch 76, and at least a portion (part in this embodiment) of the duct branch 76 is , as shown in FIG. 10, is arranged radially inside the annular rotating member 30 in plan view.

Paying attention to FIG. 11, the seat back 11b is made up of a seat back pad 77 wrapped in a skin material, and the seat back pad 77 has a pad main body 77a. A surface layer pad 77b fitted in a recess 80 formed in the pad body 77a, and a groove forming a passage 78 communicating with the second opening 74 serving as an air outlet between the surface layer pad 77b and the surface layer pad 77b. A plurality of ventilation holes 79 are formed in the pad body 77a and in the surface pad 77b, which communicate with the passages 78.

According to the second embodiment, the duct 72 has one end 75a connected to the blower 65, opens toward the seat cushion 11a, and is at least partially disposed inside the annular rotating member 30 in the radial direction. The duct main part 75 has a first opening 73 at the other end 75b, and a second opening 74 opens toward the seat back 11b, which is arranged above the rear part of the seat cushion 11a. and a duct branch section 76 branching from the duct main section 75, it is possible to compactly construct an air conditioning mechanism compatible with both the seat cushion 11a and the seat back 11b.

Moreover, since a part of the duct branching part 76 is arranged radially inside the annular rotating member 30 in plan view, the arrangement of the duct branching part 76 can be made compact.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention described in the claims. is possible.

11a... Seat cushion 11b... Seat back 14... Rotation mechanism 16... Seat cushion frame 16b... Pan frame 16c which is one end connecting member... Rear pipe 17 which is the other end connecting member ...Seat back frame 17a...Seat back side frame 17b...Upper frame 17c...Lower frame 19...Cushion side pressure receiving member 20...Seat spring 29...Base member 30... Annular rotating member 31...Cover member 41 which is an upper fixed member...Accommodating portion 65...Blowers 66, 72...Ducts 66a, 75a...One end portion of duct 67, 73, 74... Opening 67a... Upper opening edge 69 of the opening... Passage 74... Second opening 75... Duct main part 75b... Other end of duct main part 76... Duct branch Department

Claims (7)

A rotation mechanism (14) having an annular rotation member (30) to which a seat cushion frame (16) supporting a seat cushion (11a) is attached and a base member (29) rotatably supporting the annular rotation member (30). A vehicle seat device comprising:
A blower (65) disposed inside the outer periphery of the seat cushion frame (16) in a plan view, and an opening (67, 73) serving as an inlet or an air outlet and one end of the blower (65). a duct (66, 72) to which the section is connected;
The blower (65) is disposed in front of the cushion side pressure receiving member (19) attached to the seat cushion frame (16) and above the upper end of the annular rotating member (30), and the one end portion is connected to the annular rotating member (30). A part of the intermediate portion of the duct (66, 72) connected to the blower (65) above the rotating member (30) is overlapped with the cushion-side pressure receiving member (19) in plan view. The annular rotating member (30) is accommodated in a circular accommodating portion (41) that opens at least upwardly and is formed at the center of the annular rotating member (30), and the other end side of the duct (66, 72) accommodated therein. At least a part of the opening (67, 73) arranged in ) projects above the cushion-side pressure receiving member (19). At least a radially inner portion of the annular rotating member (30) is fixed to the base member (29), at least a portion of which is fixedly arranged above the base member (29) to form an annular shape. The upper fixing member (31) is sandwiched between the upper fixing member (31) and the opening (67, 73) is arranged radially inside the upper fixing member (31) in a plan view. Vehicle seat device. The one end (66a, 75a) of the duct (66, 72) is connected to the blower (65) at a position overlapping the annular rotating member (30) in plan view. 2. The vehicle seat device according to 2. The duct (72) has one end (75a) connected to the blower (65), opens toward the seat cushion (11a), and extends at least radially inside the annular rotating member (30). A duct main part (75) having a first opening (73) at the other end (75b) in which a part is arranged, and a seat back (11b) side arranged above the rear part of the seat cushion (11a). Claims 1 to 3, characterized in that the duct is configured to have a second opening (74) opening toward the duct and a duct branching part (76) branching from the duct main part (75). 3. The vehicle seat device according to any one of 3. The vehicle seat device according to claim 4, wherein a part of the duct branch portion (76) is arranged radially inside the annular rotating member (30) in plan view. A seat back frame (17) that supports a seat back (11b) disposed above the rear portion of the seat cushion (11a ) includes a pair of seat back sides that are arranged to be lined up at mutually spaced positions and extend in the vertical direction. A frame (17a), an upper frame (17b) that connects the upper ends of the seat back side frames (17a), and a lower frame (17c) that connects the lower ends of the pair of seat back side frames (17a). ), the seat cushion frame (16) has a pair of side frames (16a) that extend linearly and are supported by the annular rotating member (30), and one end portion of the side frames (16a). and a second end connecting member (16c) connecting the other ends of the pair of side frames (16a), the upper side of the seat cushion (11a) The cushion-side pressure-receiving member (19), which receives the load from (16c), the blower (65) is attached to the lower part of the one end connecting member (16b) via the attachment member (68), and the The vehicle seat device according to claim 1, wherein the openings (67, 73) are arranged between the seat springs (20) in plan view. The vehicle seat according to claim 6, characterized in that the seat cushion (11a) is formed with a passage (69) through which air blown out from the opening (67, 73) serving as an air outlet flows. Device.

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