Vehicle seat device

Abstract

To avoid increase in a position of a seat cushion even by arrangement of an ECU in a vehicular seat device including: a rotation mechanism which has a rotation member for supporting a seat cushion frame and a base member for rotatably supporting the rotation member from below, and is arranged below the seat cushion frame, an electric device, and the ECU for controlling operation of the electric device.SOLUTION: A circular housing part 41 opened at least upward is formed at a central part of a rotary member 30, and ECUs 70 and 71 is located in the housing part 41 in a plan view and at least a part of the ECUs 70 and 71 is arranged at a position overlapping the rotary member 30 in a side view.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a vehicle seat device including a seat cushion frame that supports a seat cushion, 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; an electric device; and an ECU that controls the operation of the electric device.

Background Art

[0002] A vehicle seat device in which a rotating member that supports a seat cushion frame is supported by a base member so as to be rotatable in response to the operation of an electric motor is known, for example, from Patent Document 1 and the like.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, a vehicle seat device including an electric device such as an electric motor also includes an ECU for controlling the operation of the electric device. However, in order to secure an arrangement space for the ECU, it is desirable to avoid an increase in the height of the seat cushion.

[0005] The present invention has been made in view of such circumstances, and an object thereof is to provide a vehicle seat device capable of avoiding an increase in the position of the seat cushion even due to the arrangement of the ECU.

Means for Solving the Problems

[0006] In order to achieve the above object, the present invention provides a vehicle seat device including a seat cushion frame that supports a seat cushion, 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, an electric device, and an ECU that controls the operation of the electric device. In the vehicle seat device, a circular accommodating portion that is at least open upward is formed at the central portion of the rotating member, and the ECU is disposed at a position where it is within the accommodating portion in a plan view and at least a part of the ECU overlaps the rotating member in a side view. This is the first feature.

[0007] Further, in addition to the configuration of the first feature, the present invention provides that the rotating member is formed with a tapered portion that becomes larger in diameter upward, a cylindrical side wall portion that rises upward from the upper end portion of the tapered portion so as to cooperate with the tapered portion to form the accommodating portion, and a flange portion that projects outward from the side wall portion. The ECU is disposed in an inclined posture along the tapered portion. This is the second feature.

[0008] In addition to the configuration of the second feature, the present invention provides that a mounting member disposed inside the outer periphery of the rotating member in a plan view is attached to the rotating member, and the ECU is attached to the mounting member. This is the third feature.

[0009] In addition to the configuration of the third feature, the present invention provides that the mounting member has an inclined plate portion that is inclined along the tapered portion and disposed in the accommodating portion, and the ECU is attached to the inclined plate portion. This is the fourth feature.

[0010] In addition to the configuration of the fourth feature, the present invention provides that the mounting member is coupled to the flange portion of the rotating member in front 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. This is the fifth feature.

[0011] In addition to the configuration of the fifth feature, the present invention is characterized in that the ECU is arranged so as to avoid directly below the lowermost end of the cushion side pressure receiving member in a side view as a sixth feature.

[0012] In addition to the configuration of the first or second feature, the present invention is characterized in that an electric motor that exerts power for rotationally driving the rotating member and the ECU are attached to one side of the base member and the rotating member as a seventh feature.

[0013] In addition to the configuration of the seventh feature, the present invention is characterized in that the electric motor and the ECU are attached to the side where the length in the vertical direction is larger among the base member and the rotating member as an eighth feature.

[0014] In addition to the configuration of the seventh or eighth feature, the present invention is characterized in that the electric motor and the ECU are attached to a mounting member that is arranged 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 as a ninth feature.

[0015] Furthermore, the present invention is characterized in that the mounting member is attached to the rotating member in addition to the configuration of the ninth feature as a tenth feature.

[0016] Note that the second tapered portion 30a of the embodiment corresponds to the tapered portion of the present invention, the fourth side wall portion 30b of the embodiment corresponds to the side wall portion of the present invention, the second flange portion 30c of the embodiment corresponds to the flange portion of the present invention, and the electric motor 53 and the blower 65 of the embodiment correspond to the electric equipment of the present invention.

Advantages of the Invention

[0017] According to the first feature of the present invention, the ECU is housed in a circular housing portion formed in the central portion of the rotating member and at least open upward, and at least a part of the ECU is located at a position overlapping the rotating member in a side view. Therefore, by suppressing the upward protrusion of the ECU from the rotating member, it is possible to avoid an increase in the height of the seat cushion due to the arrangement of the ECU, and also to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis of the rotating member.

[0018] According to the second feature of the present invention, the ECU is arranged in an inclined posture along the tapered portion of the rotating member, so that the upward protrusion of the ECU from the rotating member can be more effectively suppressed, and the height of the seat cushion can be more effectively suppressed.

[0019] According to the third feature of the present invention, the ECU is attached to an attachment member that is arranged inside the outer periphery of the rotating member in a plan view and attached to the rotating member. Therefore, it is possible to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis of the rotating member due to the arrangement of the attachment member for attaching the ECU.

[0020] According to the fourth feature of the present invention, the ECU is attached to the inclined plate portion of the attachment member so as to be arranged in the housing portion. Therefore, the ECU can be easily attached to the attachment member in an inclined posture along the tapered portion of the rotating member, and the upward protrusion of the ECU from the rotating member can be suppressed.

[0021] According to the fifth feature of the present invention, the attachment member is coupled to the flange portion of the rotating member in front of the rotation axis of the rotating member, and the ECU is attached to the inclined plate portion at a position avoiding interference with the cushion side pressure receiving member attached to the seat cushion frame so as to receive the load from above the seat cushion. Therefore, it is possible to avoid an increase in the size of the vehicle seat device in the vertical direction.

[0022] According to the sixth feature of the present invention, since the ECU is not disposed directly below the lowermost end of the cushion-side pressure receiving member in a side view, interference between the ECU and the cushion-side pressure receiving member can be more easily avoided.

[0023] According to the seventh feature of the present invention, since the electric motor and the ECU are attached to one side of the base member and the rotating member, it is possible to facilitate the connection of the electric motor and the ECU.

[0024] According to the eighth feature of the present invention, since the electric motor and the ECU are attached to the side having a larger length in the vertical direction of the base member and the rotating member, it is possible to easily secure a space for arranging the electric motor and the ECU while suppressing an increase in the height of the vehicle seat device.

[0025] According to the ninth feature of the present invention, since the electric motor and the ECU are attached to the attachment member disposed inside the outer periphery of the rotating member in a plan view, it is possible to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis of the rotating member due to the arrangement of the attachment member for attaching the ECU and the electric motor.

[0026] Furthermore, according to the tenth feature of the present invention, since the attachment member is attached to the rotating member, the electric motor and the ECU also rotate with respect to the base member when the rotating member rotates, and the connection wiring between the electric motor and the ECU that controls the operation of the electric motor can be compactly aggregated.

[0027] Note that the second tapered portion 30a of the embodiment corresponds to the tapered portion of the present invention, the fourth side wall portion 30b of the embodiment corresponds to the side wall portion of the present invention, the second flange portion 30c of the embodiment corresponds to the flange portion of the present invention, and the electric motor 53 and the blower 65 of the embodiment correspond to the electric equipment of the present invention.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0029] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, "front-back", "left-right", and "up-down" refer to the directions as seen from the seated person in a state where the front direction of the seated person sitting in the normal posture is defined as the front.

[0030] First, in FIG. 1, the vehicle seat device includes a pair of slide rails 13 that are arranged in parallel with each other at intervals in the left-right direction and extend linearly in order to make the seat body 11 slidable, and a rotation mechanism 14 that rotatably supports the seat body 11 and is movable along the slide rail 13.

[0031] 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 disposed above the seat cushion 11a, and a headrest 11c supported by a guide cylinder 18 provided on the seat back frame 16 so as to enable height adjustment.

[0032] The seat cushion frame 16 includes a pair of side frames 16a arranged to linearly extend in the front-rear direction so as to be aligned at positions spaced apart from each other in the left-right direction, a pan frame 16b connecting between the front end portions of these side frames 16a, and a rear pipe 16c connecting between the rear end portions of the pair of side frames 16a.

[0033] Referring to FIGS. 2 and 3 together, a cushion-side pressure receiving member 19 for receiving a load from above the seat cushion 11a is attached to the seat cushion frame 16. The cushion-side pressure receiving member 19 has a plurality (four in this embodiment) of seat springs 20 formed by curving a metal wire in a zigzag manner so as to meander left and right. These seat springs 20 are arranged such that adjacent seat springs 20 are symmetric with respect to the left and right, and are connected to adjacent seat springs 20 by a plurality of resin intermediate connecting members 21 integrally formed with these seat springs 20 by insert molding.

[0034] The front end portions of the plurality of seat springs 20 are respectively engaged with locking portions 22 provided on the pan frame 16b in the seat cushion frame 16. Also, the rear end portions 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 integrally formed with the seat spring 20 by insert molding, and the rear end connecting member 23 is formed to cover the rear pipe 16c.

[0035] 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 positioned in the vicinity of 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 inclined downward to the rear and is bridged between the pan frame 16b and the rear pipe 16c.

[0036] Paying attention to FIG. 1 again, the seat back frame 17 includes a pair of seat back side frames 17a that extend in the vertical direction so as to be arranged at positions spaced apart from each other in the left-right direction, an upper frame 17b that connects between the upper end portions of the seat back side frames 17a, and a lower frame 17c that connects between the lower end portions of the pair of seat back side frames 17a.

[0037] A back-side pressure receiving member 24 formed of resin or the like so as to be elastically deformable is disposed between the pair of seat back side frames 17a, and this back-side pressure receiving member 24 is bridged between the left and right seat back side frames 17a via an upper connecting wire 25 and a lower connecting wire 26.

[0038] Referring to FIGS. 4 to 6 together, the seat cushion frame 16 is placed on the rotation mechanism 14, and this rotation mechanism 14 includes a base member 29 movable along the slide rail 13, a rotation member 30 that supports the seat cushion frame 16 and is rotatably supported by the base member 29, and a cover member 31 that covers a part of the rotation member 30 from above and is fixed to the base member 29.

[0039] The base member 29 has an annular first bottom wall portion 29a, a cylindrical first side wall portion 29b rising upward from the outer peripheral portion of the first bottom wall portion 29a, and a first flange portion 29c projecting 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.

[0040] Further, the cover member 31 includes 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 slightly rises 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 continuous with the upper end portion of the second side wall portion 31b, an annular first flat wall portion 31d that projects laterally from the upper end portion 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. The second bottom wall portion 31a is coupled to the first bottom wall portion 29a of the base member 29 by a plurality of rivets 32.

[0041] The rotating member 30 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 as it goes upward. The rotating member 30 includes a second tapered portion 30a, a cylindrical fourth side wall portion 30b that rises upward from the upper end portion 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 projects laterally from the fourth side wall portion 30b. The second flange portion 30c is formed in a rectangular shape. A plurality of connecting members 33 extending parallel to the slide rail 13 are fastened to the second flange portion 30c by first bolts 34 and second nuts 35. The side frame 16a of the seat cushion frame 16 is connected to the connecting member 33, and the side frame 16a extends linearly while being arranged side by side at positions spaced apart from each other, and is fixedly arranged on the second flange portion 30c of the rotating member 30 via the connecting member 33.

[0042] The rotating member 30 is rotatably supported by a bearing 37 on an annular rotation support portion 36 of the base member 29. The rotation support portion 36 is formed in a substantially L-shaped cross-sectional shape by the first bottom wall portion 29a and the first side wall portion 29b of the base member 29.

[0043] The bearing 37 is formed by holding balls 39 at a plurality of circumferential positions 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.

[0044] Incidentally, at the central portion of the rotating member 30, a housing portion 41 that is at least open upward is formed. In this embodiment, the housing portion 41 is configured to be open upward and also open downward by the second tapered portion 30a and the fourth side wall portion 30b of the rotating member 30, and the cover member 31 is housed and arranged in the housing portion 41.

[0045] Incidentally, 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, and the first flange portion 29c of the base member 29 is fastened to the movable rail 46 by a plurality of second bolts 47 and second nuts 48.

[0046] The rotating member 30 is rotationally driven by a rotation driving device 49 provided between the rotating member 30 and the base member 29. This rotation driving 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.

[0047] 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.

[0048] Moreover, the actuator 50 is attached to the one having the greater length in the vertical direction among the base member 29 and the rotating member 30. In this embodiment, the actuator 50 is attached to the rotating member 30 side, and the input gear 52 is fixed to the base member 29.

[0049] The actuator 50 includes an electric motor 53 having a rotation axis extending in the vehicle width direction, a gear box 55 connected to the case 54 of the electric motor 53, and an output shaft 56 protruding from the gear box 55 with the rotation axis parallel to the rotation axis C of the rotating member 30. The output gear 51 is provided on the output shaft 56. A gear reduction mechanism (not shown) is accommodated in the gear box 55 to reduce the rotational power of the electric motor 53 and transmit it to the output shaft 56 while changing the rotation direction by 90 degrees. This gear reduction mechanism includes a worm gear so as to prevent the rotational power from the output shaft 56 side from being transmitted to the electric motor 53 side.

[0050] The rotating member 30 is rotationally driven within a range of 180 degrees. The input gear 52 has a gear portion 52a on its inner peripheral portion and is formed in an arc shape over approximately 180 degrees. The gear portion 52a is fixed to the lower surface of the inner peripheral portion of the first bottom wall portion 29a of the base member 29 so as to protrude radially inward from the inner periphery of the first bottom wall portion 29a. As a result, the gear portion 52a is arranged facing the rotation axis C side of the rotating member 30.

[0051] When fixing the input gear 52 to the base member 29, a part of a plurality of rivets 32 that couple the second bottom wall portion 31a of the cover member 31 to the first bottom wall portion 29a of the base member 29 is used to couple the second bottom wall portion 31a and the input gear 52 to the first bottom wall portion 29a with the first bottom wall portion 29a interposed therebetween. At this time, when the circumferential end portion of the input gear 52 is arranged at a portion corresponding to the rivet 32 for coupling the second bottom wall portion 31a and the input gear 52 to the first bottom wall portion 29a together, in order to avoid making the circumferential length of the input gear 52 unnecessarily long, as shown in FIG. 5, a notch 57 may be formed at the circumferential end portion of the input gear 52.

[0052] Incidentally, an attachment member 58 is attached to the rotating member 30 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 attachment member 58. That is, the gear box 55 of the actuator 50 is attached to the upper surface of the attachment member 58, and the output gear 51 is provided on the output shaft 56 penetrating the attachment member 58.

[0053] The attachment member 58 is disposed in front of the rotation axis C of the rotating member 30. The attachment member 58 has, at both ends, a bonded plate portion 58a bonded to the upper surface of the third flange portion 30c of the rotating member 30 and extends so as to be orthogonal to the longitudinal direction of the slide rail 13. The attachment member 58 is formed to integrally include a pair of the bonded plate portions 58a, a pair of inclined plate portions 58b whose upper ends are continuously provided to the bonded plate portions 58a while being inclined so as to be in a lower position as they go inward in the radial direction of the rotating member 30, and a flat support plate portion 58c connecting the lower ends of the inclined plate portions 58b.

[0054] Incidentally, the inclined plate portion 58b is disposed in the accommodation portion 41 at the center of the rotating member 30 while facing the first tapered portion 31c in the cover member 31 from the inside. Since the second tapered portion 30a of the rotating member 30 faces the first tapered portion 31c from the outside, the inclined plate portion 58b is inclined along the second tapered portion 30a of the rotating member 30 and is disposed in the accommodation portion 41.

[0055] The actuator 50 is attached to the upper surface of the support plate portion 58c of the attachment member 58, and in a state of being attached to the attachment plate portion 58, the actuator 50 is disposed below the cushion side pressure receiving member 19 while avoiding interference with the cushion side pressure receiving member 19.

[0056] Incidentally, an annular slider 60 that is in sliding contact with the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30 is interposed between them. This slider 60 is used in a vehicle seat device configured to rotate the rotating member 30 by applying an input force to the rotation mechanism 14 instead of the electric power from the actuator 50, and is used to make the cover member 31 and the rotating member 30 common. In a vehicle seat device capable of rotation by manual operation, an annular member that forms part of a mechanism for suppressing rattling of the rotating member 30 in a locked state where rotation of the rotating member 30 is blocked is interposed between the first tapered portion 31c and the second tapered portion 30a instead of the slider 60.

[0057] A blower 65 is disposed behind the front end edge of the pan frame 16b that forms the front portion of the seat cushion frame 16, and an opening 67 serving as a blowout port is formed at the other end 66b of a duct 66 having one end 66a connected to the blower 65.

[0058] As shown in FIG. 3, the blower 65 is attached to the lower portion 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 plan view. Moreover, the opening 67 opens toward the seat cushion 11a side, and in plan view, as clearly shown in FIG. 2, it is disposed between a pair of adjacent seat springs 20 among the plurality of seat springs 20 that constitute the cushion side pressure receiving member 19.

[0059] Also, 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 disposed above the annular rotating member 30 in side view.

[0060] One end 66a of the duct 66 is connected to the blower 65 so as to overlap the annular rotating member 30 in plan view above the upper end of the annular rotating member 30, and an intermediate portion of the duct 66 is disposed so as to overlap the annular rotating member 30 in side view and is accommodated in the accommodating portion 41.

[0061] Incidentally, the operation of the electric motor 53, which is the first electric device, is controlled by the first ECU 70, and the operation of the blower 65, which is the second electric device, is controlled by the second ECU 71. The first and second ECUs 70 and 71 are located in the accommodating portion 41 at the center of the rotating member 30 in plan view, and at least a part (all in this embodiment) of these ECUs 70 and 71 is disposed at a position overlapping the rotating member 30 in side view.

[0062] Moreover, the first ECU 70 and the second ECU 71 are disposed in an inclined posture along the second tapered portion 30a of the rotating member 30, and are attached to the attachment member 58 attached to the rotating member 30 for attaching the actuator 50 including the electric motor 53. That is, the attachment member 58 has a pair of inclined plate portions 58b disposed in the accommodating portion 41 at the center of the rotating member 30 while being inclined 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 disposed in the accommodating portion 41 while being inclined along the second tapered portion 30a.

[0063] Similar to the actuator 50, the first ECU 70 and the second ECU 71 are arranged 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 attachment 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 lowermost end 19a of the cushion-side pressure receiving member 19 in side view. The first ECU 70 and the second ECU 71 are arranged at positions avoiding directly below the lowermost end 19a of the cushion-side pressure receiving member 19 in side view.

[0064] Next, the operation of this embodiment will be described. A circular accommodation portion 41 that is at least open upward is formed in the central portion of the rotating member 30 that constitutes a part of the rotation mechanism 14. 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 located within the accommodation portion 41 in plan view, and at least a part of these ECUs 70, 71 overlaps the rotating member 30 in side view. By suppressing the upward protrusion of the first ECU 70 and the second ECU 71 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, and also to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis C of the rotating member 30. Moreover, in this embodiment, since all of the first and second ECUs 70, 71 are arranged at positions overlapping the rotating member 30 in side view, the upward protrusion of the first ECU 70 and the second ECU 71 from the rotating member 30 can be suppressed more effectively, and the first ECU 70 and the second ECU 71 can be arranged while more effectively suppressing an increase in the height of the seat cushion 11a.

[0065] Further, the rotating member 30 is formed with a second tapered portion 30a that becomes larger in diameter as it goes upward, and a cylindrical fourth side wall portion 30b that rises upward from the upper end portion of the second tapered portion 30a so as to form the accommodating portion 41 in cooperation with the second tapered portion 30a, and a second flange portion 30c that projects outward from the fourth side wall portion 30b. Since the first and second ECUs 70 and 71 are arranged in an inclined posture along the second tapered portion 30a, the upward protrusion of the first and second ECUs 70 and 71 from the rotating member 30 can be more effectively suppressed, and the height of the seat cushion 11a can be more effectively suppressed.

[0066] Also, the electric motor 53, the first and second ECUs 70 and 71 are attached to the rotating member 30 side which is the side with the greater length in the vertical direction among the base member 29 and the rotating member 30. Thus, it is possible to easily secure a space for arranging the electric motor 53, the first and second ECUs 70 and 71 while suppressing an increase in the height of the vehicle seat device.

[0067] Also, a mounting member 58 that is arranged inside the outer periphery 30d of the rotating member 30 in a plan view is attached to the rotating member 30, and the first and second ECUs 70 and 71 are attached to the mounting member 58. Therefore, it is possible to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis C of the rotating member 30 due to the arrangement of the mounting member 58 for attaching the first and second ECUs 70 and 71.

[0068] Moreover, not only the first ECU 70 and the second ECU 71 but also the electric motor 53 that exerts power for rotationally driving the rotating member 30 are attached to the mounting member 58. Therefore, it is possible to avoid an increase in the size of the vehicle seat device in the direction orthogonal to the rotation axis C of the rotating member 30 due to the arrangement of the mounting member 58 for attaching the electric motor 53, and it is possible to facilitate the connection between the electric motor 53 and the first ECU 70 that controls the operation of the electric motor 53.

[0069] Moreover, since the mounting member 58 is attached to the rotating member 30, when the rotating member 30 rotates, the electric motor 53 and the first and second ECUs 70, 71 also rotate with respect to the base member 29, 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 aggregated.

[0070] In addition, the mounting member 58 has an inclined plate portion 58b that is inclined along the second tapered portion 30a of the rotating member 30 and is disposed in the accommodating portion 41. Since the first and second ECUs 70, 71 are attached to the inclined plate portion 58b, the first and second ECUs 70, 71 can be easily attached to the mounting member 58 in an inclined posture along the second tapered portion 30a of the rotating member 30, and the upward protrusion of the first and second ECUs 70, 71 from the rotating member 30 can be suppressed.

[0071] In addition, the mounting member 58 is coupled to the second flange portion 30c of the rotating member 30 in front 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 that is attached to the seat cushion frame 16 so as to receive the load from above the seat cushion 11a. Therefore, it is possible to avoid an increase in the size of the vehicle seat device in the vertical direction.

[0072] Furthermore, since the electric motor 50 and the first and second ECUs 70 and 71 are arranged so as to avoid directly below the lowermost end 19a of the cushion-side pressure receiving member 19 in a side view, it is possible to more easily avoid interference between the electric motor 53, the first and second ECUs 70 and 71, and the cushion-side pressure receiving member 19. Moreover, the electric motor 50, the first and second ECUs 70 and 71 are arranged below the cushion-side pressure receiving member 19 and in front of the lowermost end 19a of the cushion-side pressure receiving member 19, and by effectively using the space below the cushion-side pressure receiving member 19, the electric motor 50, the first and second ECUs 70 and 71 can be arranged.

[0073] As described above, the embodiments of the present invention have been explained. However, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims.

[0074] For example, in the above-described 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 have been described. However, the present invention can be widely applied to an ECU that controls the operation of electrical equipment provided in a vehicle seat device.

[0075] Also, in the above-described embodiment, the first and second ECUs 70 and 71 are attached to the attachment member 58 attached to the rotating member 30. However, the ECU may be directly attached to the rotating member 30.

Explanation of reference numerals

[0076] 11a ··· Seat cushion 14 ··· Rotating mechanism 16 ··· Seat cushion frame 19 ··· Cushion-side pressure receiving member 19a ··· Lowermost end of the cushion-side pressure receiving member 29 ··· Base member 30 ··· Rotating member 30a ··· Tapered portion 30b ··· Side wall part 30c ··· Flange part 30d ··· Outer circumference of the rotating member 41 ··· Accommodating part 53 ··· Electric motor which is an electric device 58 ··· Mounting member 58b ··· Inclined plate part 65 ··· Blower which is an electric device 70, 71 ··· ECU C ··· Axis of rotation

Claims

1. A vehicle seat device comprising a seat cushion frame that supports a seat cushion, a rotating member that supports the seat cushion frame, and a base member that rotatably supports the rotating member from below, the rotating mechanism being disposed below the seat cushion frame, an electrical device, and an ECU that controls the operation of the electrical device. In the vehicle seat device, a circular accommodating portion that is at least open upward is formed at the central portion of the rotating member, the ECU is located within the accommodating portion in a plan view, at least a part of the ECU is disposed at a position overlapping the rotating member when viewed in the horizontal direction, a vehicle seat device in which the ECU is disposed in front of the rotation axis of the rotating member when the seat cushion frame is in the normal position facing forward.

2. having left and right slide rails that support the base member, The vehicle seat device according to claim 1, wherein the entire ECU is disposed above the upper ends of the left and right slide rails respectively.

3. The vehicle seat device according to claim 2, wherein the ECU is disposed between the left and right slide rails in a plan view.

4. the electrical device includes a blower, the blower is disposed above the rotating mechanism, 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 with respect to the rotation axis, and the ECU is disposed on the left side.

5. the electrical device includes an electric motor that exerts power to rotationally drive the rotating member, 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.

6. The vehicle seat according to claim 4, wherein the ECU is disposed in front of the rotation axis and behind the blower.

7. The vehicle seat according to claim 5, wherein the entire ECU is disposed at a position overlapping the electric motor when viewed in the horizontal direction.

Images