JP7709067B2 - Vehicle seat device - Google Patents

Description

The present invention relates to a vehicle seat device that includes a seat cushion frame that supports a seat cushion, a rotation mechanism that is disposed below the seat cushion frame and has a rotating member that supports the seat cushion frame and a base member that rotatably supports the rotating member from below, an electric device, and an ECU that controls the operation of the electric device.

A vehicle seat device in which a rotating member that supports a seat cushion frame is supported by a base member and can rotate in response to the operation of an electric motor is known, for example from Patent Document 1.

JP 2004-123044 A

However, a vehicle seat device equipped with electric equipment such as an electric motor also has an ECU for controlling the operation of the electric equipment, but in order to secure space for arranging the ECU, it is desirable to avoid making the seat cushion too tall.

The present invention was made in consideration of these circumstances, and aims to provide a vehicle seat device that can avoid raising the seat cushion position even when the ECU is positioned high.

To achieve the above object, the present invention provides a vehicle seat device that includes a seat cushion frame that supports a seat cushion, a rotating mechanism that has a rotating member that supports the seat cushion frame and a base member that rotatably supports the rotating member from below and is disposed below the seat cushion frame, electrical equipment, and an ECU that controls the operation of the electrical equipment, the first feature being that a circular storage section that is open at least upwardly is formed in the center of the rotating member, and the ECU is disposed in a position that is within the storage section in a plan view and at least a portion of the ECU overlaps with the rotating member in a side view.

In addition to the configuration of the first characteristic, the second characteristic of the present invention is that the rotating member is formed to have a tapered portion that is formed so that the diameter increases toward the top, a cylindrical side wall portion that rises upward from the upper end of the tapered portion so as to cooperate with the tapered portion to form the storage portion, and a flange portion that protrudes outward from the side wall portion, and the ECU is disposed in an inclined position along the tapered portion.

The third feature of the present invention is that, in addition to the configuration of the second feature, a mounting member is attached to the rotating member, the mounting member being positioned on the inside of the outer periphery of the rotating member in a plan view, and the ECU is attached to the mounting member.

In addition to the configuration of the third characteristic, the fourth characteristic of the present invention is that the mounting member has an inclined plate portion that is inclined along the tapered portion and placed in the housing portion, and the ECU is attached to the inclined plate portion.

The fifth feature of the present invention is that, in addition to the configuration of the fourth feature, the mounting member is connected to the flange of the rotating member forward of the rotation axis of the rotating member, and the ECU is attached to the inclined plate portion at a position that avoids interference with a cushion-side pressure-receiving member that is attached to the seat cushion frame so as to receive a load from above the seat cushion.

In addition to the configuration of the fifth characteristic, the sixth characteristic of the present invention is that the ECU is positioned so as not to be directly below the lowest end of the cushion-side pressure-receiving member in a side view.

The seventh feature of the present invention is that, in addition to the configuration of the first or second feature, an electric motor that generates power to rotate the rotating member and the ECU are attached to one side of the base member and the rotating member.

In addition to the seventh feature, the eighth feature of the present invention is that the electric motor and the ECU are attached to the base member and the rotating member that are longer in the vertical direction.

In addition to the seventh or eighth characteristic, the ninth characteristic of the present invention is that the electric motor and the ECU are attached to a mounting member that is positioned inside the outer periphery of the rotating member in a plan view and is attached to one of the base member and the rotating member.

Furthermore, in addition to the configuration of the ninth characteristic, the present invention has a tenth characteristic in that the mounting member is attached to the rotating member.

The second tapered portion 30a in the embodiment corresponds to the tapered portion of the present invention, the fourth side wall portion 30b in the embodiment corresponds to the side wall portion of the present invention, the second flange portion 30c in the embodiment corresponds to the flange portion of the present invention, and the electric motor 53 and blower 65 in the embodiment correspond to the electrical equipment of the present invention.

According to the first feature of the present invention, the ECU is housed in a circular housing formed in the center of the rotating member and opens at least upward in plan view, and at least a portion of the ECU is positioned to overlap the rotating member in side view. This prevents the ECU from protruding upward from the rotating member, thereby avoiding an increase in the height of the seat cushion due to the placement of the ECU, while also avoiding an increase in the size of the vehicle seat device in a direction perpendicular to the rotation axis of the rotating member.

In addition, according to the second feature of the present invention, the ECU is positioned at an angle along the tapered portion of the rotating member, which more effectively prevents the ECU from protruding upward from the rotating member, and more effectively reduces the height of the seat cushion.

According to the third feature of the present invention, the ECU is attached to a mounting member that is disposed inside the outer periphery of the rotating member in a plan view and is attached to the rotating member, so that the arrangement of the mounting member for mounting the ECU can be prevented from increasing the size of the vehicle seat device in a direction perpendicular to the rotation axis of the rotating member.

According to the fourth feature of the present invention, the ECU is attached to the inclined plate portion of the mounting member so that it is positioned within the housing portion, so that the ECU can be easily attached to the mounting member in an inclined position that is aligned with the tapered portion of the rotating member, and the ECU can be prevented from protruding upward from the rotating member.

According to the fifth feature of the present invention, the mounting member is connected to the flange of the rotating member forward of the axis of rotation of the rotating member, and the ECU is attached to the inclined plate portion at a position that avoids interference with the cushion-side pressure-receiving member that is attached to the seat cushion frame so as to receive the load from above the seat cushion, thereby preventing the vehicle seat device from becoming larger in the vertical direction.

According to a sixth feature of the present invention, the ECU is not positioned directly below the lowest end of the cushion-side pressure-receiving member in a side view, making it easier to avoid interference between the ECU and the cushion-side pressure-receiving member.

According to the seventh feature of the present invention, the electric motor and ECU are attached to one side of the base member and the rotating member, making it easy to connect the electric motor and ECU.

According to the eighth feature of the present invention, the electric motor and ECU are attached to the base member and the rotating member that are longer in the vertical direction, so that the height of the vehicle seat device is prevented from increasing and space for arranging the electric motor and ECU can be easily secured.

According to the ninth feature of the present invention, the electric motor and ECU are attached to a mounting member that is positioned inside the outer periphery of the rotating member in a plan view, so that the arrangement of the mounting member for mounting the ECU and electric motor can be prevented from increasing the size of the vehicle seat device in a direction perpendicular to the rotation axis of the rotating member.

Furthermore, according to the tenth feature of the present invention, since the mounting member is attached to the rotating member, when the rotating member rotates, the electric motor and the ECU also rotate relative to the base member, and the connection wiring between the electric motor and the ECU that controls the operation of the electric motor can be consolidated in a compact manner.

The second tapered portion 30a in the embodiment corresponds to the tapered portion of the present invention, the fourth side wall portion 30b in the embodiment corresponds to the side wall portion of the present invention, the second flange portion 30c in the embodiment corresponds to the flange portion of the present invention, and the electric motor 53 and blower 65 in the embodiment correspond to the electrical equipment of the present invention.

1 is a perspective view showing a vehicle seat device with a seat body omitted; 2 is a plan view of a main part of the vehicle seat device as viewed from above. FIG. This is a cross-sectional view taken along line 3-3 in Figure 2. FIG. 3 is a view of the ride rail and the rotation mechanism seen from the same direction as FIG. 2 . 5 is a view of the slide rail and the rotation mechanism as viewed from the opposite side to FIG. 4 . This is a cross-sectional view taken along line 6-6 in Figure 4.

The following describes an embodiment of the present invention with reference to the attached drawings. In the following description, "front/back," "left/right," and "up/down" refer to the direction seen from the seated person in a normal seated position, with the front being defined as the direction in front of the seated person.

First, in FIG. 1, the vehicle seat device includes a pair of slide rails 13 that extend linearly and parallel to each other with a space between them in the left-right direction to allow the seat body 11 to slide, and a rotation mechanism 14 that supports the seat body 11 in a rotatable manner and can move along the slide rails 13.

The seat body 11 includes a seat cushion 11a supported by a seat cushion frame 16, a seat back 11b supported by a seat back frame 17 connected to the seat cushion frame 16 and positioned above the seat cushion 11a, and a headrest 11c supported by a guide tube 18 provided on the seat back frame 16 so that the height can be adjusted.

The seat cushion frame 16 has a pair of side frames 16a arranged to extend linearly in the front-rear direction while being spaced apart from each other in the left-right direction, a pan frame 16b connecting the front ends of the side frames 16a, and a rear pipe 16c connecting the rear ends of the pair of side frames 16a.

Referring to both Figures 2 and 3, the seat cushion frame 16 is fitted with a cushion-side pressure-receiving member 19 that receives a load from above the seat cushion 11a. This cushion-side pressure-receiving member 19 has a number of seat springs 20 (four in this embodiment) that are made of metal wire bent in a zigzag pattern so that it snakes left and right. The seat springs 20 are arranged so that adjacent seat springs 20 are symmetrical, and adjacent seat springs 20 are connected to each other by a number of resin intermediate connecting members 21 that are molded integrally with the seat springs 20 by insert molding.

The front ends of the seat springs 20 are engaged with locking portions 22 provided on the pan frame 16b of the seat cushion frame 16. The rear ends of adjacent seat springs 20 are engaged with the rear pipe 16c of the seat cushion frame 16 and are connected by a resin rear end connecting member 23 that is molded integrally with the seat springs 20 by insert molding, and the rear end connecting member 23 is formed to cover the rear pipe 16c.

That is, the cushion side pressure receiving member 19 is bridged between the pan frame 16b and the rear pipe 16c of the seat cushion frame 16, and is disposed between the pair of side frames 16a in a plan view. Moreover, as shown in FIG. 3, the lowermost end 19a of the cushion side pressure receiving member 19 is located near the rear pipe 16c provided at the rear end of the seat cushion frame 16, and most of the cushion side pressure receiving member 19 is bridged between the pan frame 16b and the rear pipe 16c, inclining downward toward the rear.

Referring again to FIG. 1, the seatback frame 17 has a pair of seatback side frames 17a extending vertically and spaced apart from each other in the left-right direction, an upper frame 17b connecting the upper ends of the seatback side frames 17a, and a lower frame 17c connecting the lower ends of the pair of seatback side frames 17a.

Between the pair of seatback side frames 17a, a back-side pressure-receiving member 24 made of resin or the like and capable of elastic deformation is disposed, and this back-side pressure-receiving member 24 is bridged between the left and right seatback side frames 17a via an upper connecting wire 25 and a lower connecting wire 26.

Referring also to Figures 4 to 6, the seat cushion frame 16 is placed on the rotation mechanism 14, which includes a base member 29 that is movable along the slide rail 13, a rotation member 30 that supports the seat cushion frame 16 and is rotatably supported on the base member 29, and a cover member 31 that covers a portion of the rotation member 30 from above and is fixed to the base member 29.

The base member 29 has a first bottom wall portion 29a that is annular, a first cylindrical side wall portion 29b that rises upward from the outer periphery of the first bottom wall portion 29a, and a first flange portion 29c that protrudes outward from the upper end portion of the first side wall portion 29b, and the first flange portion 29c is formed in a rectangular shape.

The cover member 31 also has an annular second bottom wall portion 31a that abuts against the first bottom wall portion 29a of the base member 29 from above, a cylindrical second side wall portion 31b that rises slightly upward from the outer periphery of the second bottom wall portion 31a, a first tapered portion 31c that is formed to have a larger diameter as it goes upward and is connected to the upper end of the second side wall portion 31b, a first annular flat wall portion 31d that protrudes laterally from the upper end of the first tapered portion 31c, and a cylindrical third side wall portion 31e that rises upward from the outer periphery of the first flat wall portion 31d, and the second bottom wall portion 31a is connected to the first bottom wall portion 29a of the base member 29 with a plurality of rivets 32.

The rotating member 30 has a second tapered portion 30a that is arranged in a position facing the first tapered portion 31c of the cover member 31 from the outside and is formed so that the diameter increases as it goes upward, a cylindrical fourth side wall portion 30b that rises upward from the upper end of the second tapered portion 30a so as to face the third side wall portion 31e of the cover member 31 from the outside, and a second flange portion 30c that protrudes outward from the fourth side wall portion 30b, and the second flange portion 30c is formed in a rectangular shape. In addition, a connecting member 33 that extends parallel to the slide rail 13 is fastened to the second flange portion 30c by a plurality of first bolts 34 and second nuts 35. The side frames 16a of the seat cushion frame 16 are connected to the connecting member 33, and the side frames 16a extend linearly while being spaced apart from each other and are fixedly positioned on the second flange 30c of the rotating member 30 via the connecting member 33.

The rotating member 30 is rotatably supported by a ring-shaped rotating support portion 36 of the base member 29 via a bearing 37, and the rotating support portion 36 is formed so that the cross-sectional shape of the first bottom wall portion 29a of the base member 29 and the first side wall portion 29b is approximately L-shaped.

The bearing 37 is made up of balls 39 held at multiple circumferential positions on 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.

A storage section 41 that is open at least upward is formed in the center of the rotating member 30. In this embodiment, the storage section 41 is configured to be open upward and downward by the second tapered section 30a and the fourth side wall section 30b of the rotating member 30, and the cover member 31 is stored and positioned within the storage section 41.

The slide rail 13 is composed of a fixed rail 45 that extends in the front-rear direction of the vehicle and a movable rail 46 that is slidably fitted to the fixed rail 45, and the first flange 29c of the base member 29 is fastened to the movable rail 46 by a plurality of second bolts 47 and second nuts 48.

The rotating member 30 is rotated by a rotation drive device 49 provided between the rotating member 30 and the base member 29, and this rotation drive device 49 includes an actuator 50, an output gear 51 that rotates with the rotational power exerted by the actuator 50, and an input gear 52 that meshes with the output gear 51.

The actuator 50 and the output gear 51 are attached to one side of the rotating member 30 and the base member 29, and the input gear 52 is fixed to the other side of the rotating member 30 and the base member 29.

The actuator 50 is attached to the base member 29 or the rotating member 30, whichever is longer in the vertical direction. In this embodiment, the actuator 50 is attached to the rotating member 30, and the input gear 52 is fixed to the base member 29.

The actuator 50 includes an electric motor 53 having a rotation axis extending in the vehicle width direction, a gear box 55 connected to a case 54 of the electric motor 53, and an output shaft 56 protruding from the gear box 55 with its rotation axis parallel to the rotation axis C of the rotating member 30, and the output gear 51 is provided on the output shaft 56. The gear box 55 houses a gear reduction mechanism (not shown) that reduces the rotational power of the electric motor 53 while changing the direction of rotation by 90 degrees and transmits it to the output shaft 56. This gear reduction mechanism includes a worm gear to prevent the rotational power from the output shaft 56 from being transmitted to the electric motor 53.

The rotating member 30 is driven to rotate within a range of 180 degrees, and the input gear 52 has a gear portion 52a on its inner circumference, is formed in an arc shape spanning approximately 180 degrees, and is fixed to the underside of the inner circumference of the first bottom wall portion 29a of the base member 29 so that the gear portion 52a protrudes radially inward from the inner circumference of the first bottom wall portion 29a. As a result, the gear portion 52a is positioned facing the rotation axis C of the rotating member 30.

When the input gear 52 is fixed to the base member 29, some of the rivets 32 that connect the second bottom wall portion 31a of the cover member 31 to the first bottom wall portion 29a of the base member 29 are used to connect the second bottom wall portion 31a and the input gear 52 to the first bottom wall portion 29a across the first bottom wall portion 29a. In this case, when the circumferential end of the input gear 52 is disposed at a position corresponding to the rivets 32 for connecting the second bottom wall portion 31a and the input gear 52 to the first bottom wall portion 29a, a notch 57 may be formed in the circumferential end of the input gear 52 as shown in FIG. 5 in order to avoid unnecessarily increasing the circumferential length of the input gear 52.

The rotating member 30 is fitted with a mounting member 58 that is positioned inside the outer periphery 30d of the rotating member 30 in a plan view, and the actuator 50 including the electric motor 53 is attached to the mounting member 58. That is, the gear box 55 of the actuator 50 is attached to the upper surface of the mounting member 58, and the output gear 51 is provided on the output shaft 56 that passes through the mounting member 58.

The mounting member 58 is disposed forward of the rotation axis C of the rotating member 30. The mounting member 58 has a coupled plate portion 58a at both ends that is coupled to the upper surface of the third flange portion 30c of the rotating member 30, and extends perpendicular to the longitudinal direction of the slide rail 13. It is formed to integrally include a pair of the coupled plate portions 58a, a pair of left and right inclined plate portions 58b whose upper ends are connected to the coupled plate portions 58a while inclining downward as they move radially inward of the rotating member 30, and a flat support plate portion 58c that connects the lower ends of the inclined plate portions 58b.

The inclined plate portion 58b is disposed in the storage portion 41 at the center of the rotating member 30 while facing the first tapered portion 31c of the cover member 31 from the inside, and the second tapered portion 30a of the rotating member 30 faces the first tapered portion 31c from the outside, so that the inclined plate portion 58b is disposed in the storage portion 41 at an angle along the second tapered portion 30a of the rotating member 30.

The actuator 50 is attached to the upper surface of the support plate portion 58c of the mounting member 58, and when attached to the mounting plate portion 58, the actuator 50 is positioned below the cushion side pressure receiving member 19 while avoiding interference with the cushion side pressure receiving member 19.

Between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30, an annular slider 60 is interposed, which slides against the tapered portions 31c and 30a. This slider 60 is used to share the cover member 31 and the rotating member 30 with a vehicle seat device in which the rotating member 30 is rotated by applying human power to the rotation mechanism 14 instead of the electric power of the actuator 50. In a vehicle seat device in which rotation by human power is possible, an annular member constituting part of a mechanism for suppressing rattling of the rotating member 30 in a locked state in which the rotation of the rotating member 30 is prevented is interposed between the first tapered portion 31c and the second tapered portion 30a in place of the slider 60.

A blower 65 is disposed behind the front edge of the pan frame 16b that constitutes the front part of the seat cushion frame 16, and an opening 67 that serves as an outlet is formed at one end 66b of a duct 66, the other end 66b of which is connected to the blower 65.

As shown in FIG. 3, the blower 65 is attached to the lower part of the pan frame 16b via a support member 68, and the opening 67 is disposed radially inside the annular rotating member 30 and radially inside the cover member 31 in a plan view. Moreover, the opening 67 opens toward the seat cushion 11a side, and is disposed between a pair of adjacent seat springs 20 among the multiple seat springs 20 that constitute the cushion side pressure receiving member 19 in a plan view, as shown in FIG. 2.

The other end 66b of the duct 66 protrudes slightly above the cushion side pressure-receiving member 19, and the upper end opening edge 67a of the opening 67 is positioned above the annular rotating member 30 in a side view.

In addition, one end 66a of the duct 66 is connected to the blower 65 above the upper end of the annular rotating member 30 so as to overlap the annular rotating member 30 in a plan view, and the middle part of the duct 66 is accommodated in the accommodation section 41 so as to overlap the annular rotating member 30 in a side view.

The operation of the electric motor 53, which is the first electric device, is controlled by a first ECU 70, and the operation of the blower 65, which is the second electric device, is controlled by a second ECU 71. The first and second ECUs 70, 71 are located in a storage section 41 in the center of the rotating member 30 in a plan view, and at least a portion of the ECUs 70, 71 (all of them in this embodiment) are positioned so as to overlap the rotating member 30 in a side view.

The first ECU 70 and the second ECU 71 are arranged in an inclined position along the second tapered portion 30a of the rotating member 30, and the first ECU 70 and the second ECU 71 are attached to the mounting member 58 attached to the rotating member 30 in order to mount the actuator 50 including the electric motor 53. That is, the mounting member 58 has a pair of inclined plate portions 58b arranged in the housing portion 41 at the center of the rotating member 30 while inclining along the second tapered portion 30a, and the first ECU 70 and the second ECU 71 are respectively attached to the pair of inclined plate portions 58b arranged in the housing portion 41 while inclining along the second tapered portion 30a.

The first ECU 70 and the second ECU 71, like the actuator 50, are disposed below the cushion side pressure receiving member 19 while avoiding interference with the cushion side pressure receiving member 19, and are attached to the inclined plate portion 58b. Moreover, as shown in FIG. 3, the actuator 50 and the mounting member 58 to which the first ECU 70 and the second ECU 71 are attached are located below the cushion side pressure receiving member 19 and in front of the lowest end 19a of the cushion side pressure receiving member 19 in a side view, and the first ECU 70 and the second ECU 71 are disposed at a position that avoids being directly below the lowest end 19a of the cushion side pressure receiving member 19 in a side view.

Next, the operation of this embodiment will be described. A circular storage section 41 that is open at least upwards is formed in the center of the rotating member 30 that constitutes part of the rotating mechanism 14. A first ECU 70 that controls the operation of the electric motor 53 and a second ECU 71 that controls the operation of the blower 65 are located within the storage section 41 in a plan view, and at least a portion of these ECUs 70, 71 are arranged in a position that overlaps with the rotating member 30 in a side view. Therefore, by preventing the first ECU 70 and the second ECU 71 from protruding upward from the rotating member 30, it is possible to avoid an increase in the height of the seat cushion 11a due to the arrangement of the first and second ECUs 70, 71, while also avoiding an increase in the size of the vehicle seat device in a direction perpendicular to the rotation axis C of the rotating member 30. Furthermore, in this embodiment, the first and second ECUs 70, 71 are positioned so that they overlap the rotating member 30 in a side view, so that the first ECU 70 and the second ECU 71 can be positioned while preventing the first ECU 70 and the second ECU 71 from protruding upward from the rotating member 30 and more effectively preventing the height of the seat cushion 11a from increasing.

The rotating member 30 is formed to have a second tapered portion 30a that is formed so that the diameter increases toward the top, a cylindrical fourth side wall portion 30b that rises upward from the upper end of the second tapered portion 30a to cooperate with the second tapered portion 30a to form the storage portion 41, and a second flange portion 30c that protrudes outward from the fourth side wall portion 30b. Since the first and second ECUs 70, 71 are arranged in an inclined position along the second tapered portion 30a, the upward protrusion of the first and second ECUs 70, 71 from the rotating member 30 can be more effectively suppressed, and the height of the seat cushion 11a can be more effectively suppressed.

The electric motor 53 and the first and second ECUs 70, 71 are attached to the rotating member 30 side, which is the longer of the base member 29 and the rotating member 30 in the vertical direction, and the space for arranging the electric motor 53 and the first and second ECUs 70, 71 can be easily secured while preventing the vehicle seat device from becoming too tall.

In addition, a mounting member 58 is attached to the rotating member 30, which is positioned inside the outer periphery 30d of the rotating member 30 in a plan view, and the first and second ECUs 70, 71 are attached to the mounting member 58. Therefore, the arrangement of the mounting member 58 for mounting the first and second ECUs 70, 71 can prevent the vehicle seat device from becoming large in size in a direction perpendicular to the rotation axis C of the rotating member 30.

Moreover, the mounting member 58 is attached not only to the first ECU 70 and the second ECU 71, but also to the electric motor 53 that generates power to rotate the rotating member 30. Therefore, the arrangement of the mounting member 58 for mounting the electric motor 53 makes it possible to easily connect the electric motor 53 to the first ECU 70 that controls the operation of the electric motor 53 while avoiding an increase in size of the vehicle seat device in the direction perpendicular to the rotation axis C of the rotating member 30.

Moreover, by attaching the mounting member 58 to the rotating member 30, the electric motor 53 and the first and second ECUs 70, 71 also rotate relative to the base member 29 when the rotating member 30 rotates, and the connection wiring between the electric motor 53 and the first ECU 70 that controls the operation of the electric motor 53 can be compactly consolidated.

The mounting member 58 also has an inclined plate portion 58b that is inclined along the second tapered portion 30a of the rotating member 30 and is disposed within the housing portion 41, and the first and second ECUs 70, 71 are attached to the inclined plate portion 58b. This makes it possible to easily attach the first and second ECUs 70, 71 to the mounting member 58 in an inclined position that is aligned with the second tapered portion 30a of the rotating member 30, and to prevent the first and second ECUs 70, 71 from protruding upward from the rotating member 30.

The mounting member 58 is connected to the second flange portion 30c of the rotating member 30 forward of the rotation axis C of the rotating member 30, and the first and second ECUs 70, 71 are attached to the inclined plate portion 58b at a position that avoids interference with the cushion side pressure receiving member 19 attached to the seat cushion frame 16 so as to receive the load from above the seat cushion 11a, thereby preventing the vehicle seat device from becoming larger in the vertical direction.

Furthermore, since the electric motor 50 and the first and second ECUs 70, 71 are arranged to avoid being directly below the lowest end 19a of the cushion side pressure receiving member 19 in a side view, it is easier to avoid the electric motor 53 and the first and second ECUs 70, 71 interfering with the cushion side pressure receiving member 19. Moreover, the electric motor 50 and the first and second ECUs 70, 71 are arranged below the cushion side pressure receiving member 19, forward of the lowest end 19a of the cushion side pressure receiving member 19, so that the electric motor 50 and the first and second ECUs 70, 71 can be arranged by effectively utilizing the space below the cushion side pressure receiving member 19.

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

For example, in the above embodiment, the first ECU 70 that controls the operation of the electric motor 53 and the second ECU 71 that controls the operation of the blower 65 are described, but the present invention can be broadly applied to ECUs that control the operation of electrical equipment provided in a vehicle seat device.

In the above embodiment, the first and second ECUs 70, 71 are attached to the mounting member 58 that is attached to the rotating member 30, but the ECUs may be attached directly to the rotating member 30.

Reference Signs List 11a... Seat cushion 14... Rotation mechanism 16... Seat cushion frame 19... Cushion side pressure receiving member 19a... Bottom end 29 of cushion side pressure receiving member... Base member 30... Rotation member 30a... Tapered portion 30b... Side wall portion 30c... Flange portion 30d... Outer periphery 41 of rotation member... Storage portion 53... Electric motor 58 which is an electrical device... Mounting member 58b... Inclined plate portion 65... Blower 70, 71 which is an electrical device... ECU
C: Rotation axis

Claims (7)

A vehicle seat device including a seat cushion frame supporting a seat cushion, a rotation mechanism disposed below the seat cushion frame, the rotation mechanism having a rotation member supporting the seat cushion frame and a base member rotatably supporting the rotation member from below, an electric device, and an ECU controlling the operation of the electric device,
A circular receiving portion that is open at least upward is formed in the center of the rotating member,
The ECU is located within the housing in a plan view,
At least a portion of the ECU is disposed at a position overlapping the rotating member when viewed in a horizontal direction,
The vehicle seat apparatus , when the seat cushion frame is in a normal position facing forward, the ECU is disposed forward of a rotation axis of the rotating member . The base member is supported by left and right slide rails.
2. The vehicle seat apparatus according to claim 1 , wherein the entire ECU is disposed above upper ends of the left and right slide rails. 3. The vehicle seat apparatus according to claim 2 , wherein the ECU is disposed between the left and right slide rails in a plan view. The electrical equipment includes a blower;
The blower is disposed above the rotation mechanism,
2. The vehicle seat according to claim 1 , wherein, when the seat cushion frame is in the normal position, the blower is disposed on the right side of the rotation axis and the ECU is disposed on the left side . the electric device includes an electric motor that exerts power to rotate the rotating member,
2. The vehicle seat according to claim 1, wherein when the seat cushion frame is in the normal position, the electric motor is disposed on one side in the left-right direction with respect to the rotation axis, and the ECU is disposed on the other side in the left-right direction with respect to the rotation axis. 5. The vehicle seat according to claim 4 , wherein the ECU is disposed forward of the rotation axis and rearward of the blower. 6. The vehicle seat according to claim 5 , wherein the ECU is disposed in a position where the entire ECU overlaps with the electric motor when viewed in a horizontal direction.