Vehicle seat and manufacturing method of vehicle seat

Abstract

To provide a vehicle seat device including: a rotation mechanism including a rotation member supporting a seat cushion frame and a base member rotatably supporting the rotation member from below, and arranged below the seat cushion frame; an electric device; and an ECU that controls actuation of the electric device, in which a position of the seat cushion is prevented from being high regardless of arrangement of the ECU.SOLUTION: A circular storage part 41 is formed so as to be opened upward at least in a center part of a rotation member 30. The ECUs 70, 71 are located in the storage part 41 in plan view. At least a part of the ECUs 70, 71 is arranged at a position overlapping with the rotation member 30 in side view.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat device comprising a seat cushion frame that supports a seat cushion, a rotating mechanism that is arranged 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, electrical equipment, and an ECU that controls the operation of the electrical equipment. [Background technology]

[0002] BACKGROUND ART 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. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-123044 Summary of the Invention [Problem to be solved by the invention]

[0004] Vehicle seat devices equipped with electrical equipment such as electric motors also have an ECU for controlling the operation of the electrical equipment, but in order to ensure space for arranging the ECU, it is desirable to avoid making the seat cushion too high.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide a vehicle seat device that can prevent the seat cushion from being positioned too high even when the ECU is disposed. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a vehicle seat device comprising a seat cushion frame that supports a seat cushion, a rotating mechanism that is arranged 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, electrical equipment, and an ECU that controls the operation of the electrical equipment, wherein a circular storage section that is open at least upward is formed in the center of the rotating member, and the ECU is located within the storage section in a plan view and at least a portion of the ECU is arranged in a position that overlaps the rotating member in a side view.

[0007] In addition to the configuration of the first characteristic, the present invention has a second characteristic in that the rotating member is formed to have a tapered portion formed so that the diameter increases toward the top, a cylindrical side wall portion rising upward from the upper end of the tapered portion so as to cooperate with the tapered portion to form the accommodating portion, and a flange portion extending outward from the side wall portion, and the ECU is arranged in an inclined position along the tapered portion.

[0008] In addition to the configuration of the second characteristic, the present invention has a third characteristic in that an attachment member is attached to the rotating member, the attachment member being positioned inside the outer periphery of the rotating member in a planar view, and the ECU is attached to the attachment member.

[0009] A fourth feature of the present invention is that, in addition to the configuration of the third feature, the mounting member has an inclined plate portion that is inclined along the tapered portion and is placed in the accommodating portion, and the ECU is mounted to the inclined plate portion.

[0010] A 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 portion 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.

[0011] In addition to the configuration of the fifth characteristic, the present invention has a sixth characteristic in that the ECU is arranged so as to avoid being located directly below the lowest end of the cushion side pressure-receiving member in a side view.

[0012] A 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.

[0013] In addition to the seventh feature, the present invention has an eighth feature in that the electric motor and the ECU are attached to the base member and the rotating member that have a longer vertical length.

[0014] In addition to the configuration of the seventh or eighth feature, the present invention has a ninth feature in that the electric motor and the ECU are attached to an attachment 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.

[0015] 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.

[0016] 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. [Effects of the Invention]

[0017] According to the first feature of the present invention, the ECU is accommodated in a circular accommodation section formed in the center of the rotating member and opening at least upward in a plan view, and at least a portion of the ECU is positioned so as to overlap the rotating member in a 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, and also avoids an increase in the size of the vehicle seat device in a direction perpendicular to the rotation axis of the rotating member.

[0018] Furthermore, according to the second feature of the present invention, by arranging the ECU in an inclined position along the tapered portion of the rotating member, it is possible to more effectively prevent the ECU from protruding upward from the rotating member and more effectively reduce the height of the seat cushion.

[0019] According to the third feature of the present invention, the ECU is attached to a mounting member that is positioned inside the outer periphery of the rotating member in a plan view and is attached to the rotating member, so that it is possible to avoid the vehicle seat device becoming larger in size in a direction perpendicular to the rotation axis of the rotating member due to the placement of the mounting 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 mounting member so as to be positioned within the accommodation portion, so that the ECU can be easily attached to the mounting member in an inclined position that aligns with the tapered portion of the rotating member, thereby preventing the ECU from protruding upward from the rotating member.

[0021] According to the fifth feature of the present invention, the mounting member is connected to the flange portion 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 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.

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

[0023] According to the seventh aspect of the present invention, the electric motor and the ECU are attached to one side of the base member and the rotating member, which makes it easy to connect the electric motor and the ECU.

[0024] 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, thereby making it possible to easily secure space for arranging the electric motor and ECU while preventing the vehicle seat device from becoming too tall.

[0025] 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 planar view, thereby preventing the vehicle seat device from becoming larger in size in a direction perpendicular to the rotation axis of the rotating member due to the placement of the mounting member for attaching the ECU and electric motor.

[0026] Furthermore, according to the tenth feature of the present invention, the mounting member is attached to the rotating member, so that when the rotating member rotates, the electric motor and 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 compactly consolidated.

[0027] 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. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a perspective view showing a vehicle seat device with a seat body omitted; [Figure 2] 2 is a plan view of a main part of the vehicle seat device as viewed from above. FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. [Figure 4] FIG. 3 is a view of the ride rail and the rotation mechanism from the same direction as FIG. 2. [Figure 5] FIG. 5 is a view of the slide rail and the rotation mechanism as seen from the opposite side to FIG. 4. [Figure 6] 6 is a cross-sectional view taken along line 6-6 in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0029] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, the terms "front," "left," "right," and "up and down" refer to directions as seen from the seated person in a normal seated position, with the front being defined as the direction in front of the seated person.

[0030] First, in FIG. 1, the vehicle seat device includes a pair of slide rails 13 that extend linearly parallel to each other with a gap between them in the left-right direction to allow a seat body 11 to slide, and a rotation mechanism 14 that rotatably supports the seat body 11 and can move along the slide rails 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 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 its height can be adjusted.

[0032] The seat cushion frame 16 has a pair of side frames 16a arranged to extend linearly in the front-to-rear direction while being spaced apart from each other in the left-to-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.

[0033] Referring to Figures 2 and 3 together, a cushion-side pressure-receiving member 19 that receives a load from above the seat cushion 11a is attached to the seat cushion frame 16, and this cushion-side pressure-receiving member 19 has a plurality 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, and the seat springs 20 are arranged so that adjacent seat springs 20 are symmetrical to each other, and adjacent seat springs 20 are connected to each other by a plurality of intermediate connecting members 21 made of resin that are molded integrally with the seat springs 20 by insert molding.

[0034] The front ends of the plurality of 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 so as 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 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, inclined rearward and downward.

[0036] Referring again to FIG. 1, the seatback frame 17 includes a pair of seatback side frames 17a extending in the up-down direction and aligned at positions 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.

[0037] A back-side pressure-receiving member 24 made of resin or the like and capable of elastic deformation is disposed between the pair of seatback side frames 17a, 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.

[0038] 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.

[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 periphery of the first bottom wall portion 29a, and a first flange portion 29c extending 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] 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 so that its diameter increases toward the top and that 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 joined to the first bottom wall portion 29a of the base member 29 with a plurality of rivets 32.

[0041] The rotating member 30 has 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 that is formed so that its 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 and faces 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, the second flange portion 30c being 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 this connecting member 33, and the side frames 16a extend linearly while being aligned at a distance from each other, and are fixedly positioned 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 ring-shaped rotation support portion 36 of the base member 29 via a bearing 37, and the rotation 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.

[0043] The bearing 37 is configured by holding balls 39 at multiple locations around the circumference 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, a storage portion 41 that is open at least upward is formed in the center of the rotating member 30. In this embodiment, the storage portion 41 is configured to be open upward and 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 stored and disposed within the storage portion 41.

[0045] The slide rail 13 consists of a fixed rail 45 extending in the fore-and-aft 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 rotational drive device 49 provided between the rotating member 30 and the base member 29, and this rotational 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.

[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 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 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 gearbox 55 connected to a case 54 of the electric motor 53, and an output shaft 56 protruding from the gearbox 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. A gear reduction mechanism (not shown) is housed in the gearbox 55, which reduces the rotational power of the electric motor 53 while changing the rotation direction by 90 degrees and transmits it to the output shaft 56, and this gear reduction mechanism is configured to include 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 driven to rotate within a range of 180 degrees, and the input gear 52 has a gear portion 52a on its inner periphery, is formed in an arc shape spanning approximately 180 degrees, and is fixed to the lower surface of the inner periphery of a first bottom wall portion 29a of the base member 29 so that the gear portion 52a protrudes radially inward from the inner periphery of the first bottom wall portion 29a. As a result, the gear portion 52a is disposed facing the rotation axis C of the rotating member 30.

[0051] When fixing the input gear 52 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 located at a position corresponding to the rivets 32 that connect the second bottom wall portion 31a and the input gear 52 to the first bottom wall portion 29a, notches 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.

[0052] Meanwhile, a mounting member 58 is attached to the rotating member 30, the mounting member 58 being located 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.

[0053] The mounting member 58 is disposed forward of the rotation axis C of the rotating member 30. The mounting member 58 has at both ends connectable plate portions 58a that are connected 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. The mounting member 58 is integrally formed to have a pair of connectable plate portions 58a, a pair of left and right inclined plate portions 58b that are inclined downward toward the radially inward direction of the rotating member 30 and have upper ends connected to the connectable plate portions 58a, and a flat support plate portion 58c that connects the lower ends of the inclined plate portions 58b.

[0054] The inclined plate portion 58b is arranged in the storage portion 41 in 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 the inclined plate portion 58b is arranged in the storage portion 41 while inclined along the second tapered portion 30a of the rotating member 30.

[0055] 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.

[0056] An annular slider 60 is interposed between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30, and is in sliding contact with the tapered portions 31c, 30a. This slider 60 is used to make the cover member 31 and the rotating member 30 compatible with a vehicle seat device in which the rotating member 30 is rotated by human power acting on the rotation mechanism 14 instead of the electric power of the actuator 50. In a vehicle seat device that allows rotation by human power, an annular member that constitutes part of a mechanism for suppressing rattle of the rotating member 30 in a locked state in which 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.

[0057] A blower 65 is arranged behind the front edge of the pan frame 16b that forms the front part of the seat cushion frame 16, and one end 66a of a duct 66 is connected to the blower 65, and the other end 66b of the duct 66 has an opening 67 that serves as an outlet.

[0058] 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 inward of the annular rotating member 30 and radially inward of the cover member 31 in a plan view. Moreover, the opening 67 opens toward the seat cushion 11a, and is disposed between a pair of adjacent seat springs 20 among the plurality of seat springs 20 constituting the cushion-side pressure-receiving member 19 in a plan view, as clearly shown in FIG.

[0059] 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.

[0060] Furthermore, 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 planar view, and the middle portion of the duct 66 is accommodated in the accommodating section 41 so as to overlap the annular rotating member 30 in a side view.

[0061] The operation of the electric motor 53, which is the first electrical device, is controlled by a first ECU 70, and the operation of the blower 65, which is the second electrical 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 (all of it in this embodiment) of the ECUs 70, 71 are positioned so as to overlap the rotating member 30 in a side view.

[0062] Moreover, the first ECU 70 and the second ECU 71 are disposed in an inclined position along the second tapered portion 30a of the rotating member 30, and are attached to the attachment member 58 that is attached to the rotating member 30 in order to attach the actuator 50 including the electric motor 53. That is, the attachment member 58 has a pair of inclined plate portions 58b that are disposed in the accommodation portion 41 at the center of the rotating member 30 while inclining so as to follow 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 that are disposed in the accommodation portion 41 while inclining so as to follow the second tapered portion 30a.

[0063] Similar to the actuator 50, the first ECU 70 and the second ECU 71 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 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 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 positions that avoid being directly below the lowest end 19a of the cushion-side pressure-receiving member 19 in a side view.

[0064] Next, the operation of this embodiment will be explained. A circular storage section 41 that is open at least upward is formed in the center of the rotating member 30 that constitutes 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 storage section 41 in a plan view, and at least a portion of these ECUs 70, 71 are arranged in a position that overlaps 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. Moreover, in this embodiment, the first and second ECUs 70, 71 are all positioned so as to 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.

[0065] Furthermore, the rotating member 30 is formed to have a second tapered portion 30a that is formed so that its diameter increases as it extends upward, a cylindrical fourth side wall portion 30b that rises upward from the upper end of the second tapered portion 30a so as 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, and the first and second ECUs 70, 71 are arranged in an inclined position along the second tapered portion 30a, so that upward protrusion of the first and second ECUs 70, 71 from the rotating member 30 can be more effectively prevented, and the height of the seat cushion 11a can be more effectively reduced.

[0066] In addition, 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, so that space can be easily secured to arrange the electric motor 53 and the first and second ECUs 70, 71 while preventing the height of the vehicle seat device from increasing.

[0067] Furthermore, an attachment member 58 is attached to the rotating member 30, which is positioned inside the outer periphery 30d of the rotating member 30 in a planar view, and the first and second ECUs 70, 71 are attached to the attachment member 58. Therefore, the arrangement of the attachment member 58 for attaching the first and second ECUs 70, 71 can avoid the vehicle seat device from becoming larger in size in a direction perpendicular to the rotation axis C of the rotating member 30.

[0068] Furthermore, not only the first ECU 70 and the second ECU 71 but also the electric motor 53 that generates power to rotate the rotating member 30 are attached to the mounting member 58. Therefore, the arrangement of the mounting member 58 for attaching the electric motor 53 also makes it possible to avoid the vehicle seat device becoming larger in size in a direction perpendicular to the rotation axis C of the rotating member 30, while making it easier to connect the electric motor 53 to the first ECU 70 that controls the operation of the electric motor 53.

[0069] Furthermore, by attaching the mounting member 58 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 relative 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 consolidated.

[0070] Furthermore, 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 positioned within the accommodating portion 41, and the first and second ECUs 70, 71 are mounted on the inclined plate portion 58b. Therefore, the first and second ECUs 70, 71 can be easily mounted on the mounting member 58 in an inclined position that is aligned with the second tapered portion 30a of the rotating member 30, thereby preventing the first and second ECUs 70, 71 from protruding upward from the rotating member 30.

[0071] Furthermore, 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 that is 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.

[0072] Furthermore, since the electric motor 50 and the first and second ECUs 70, 71 are disposed so as to avoid being directly below the lowest 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 50 and the first and second ECUs 70, 71 and the cushion side pressure receiving member 19. Moreover, the electric motor 50 and the first and second ECUs 70, 71 are disposed below the cushion side pressure receiving member 19 and in front of the lowest end 19a of the cushion side pressure receiving member 19, and the space below the cushion side pressure receiving member 19 can be effectively used to dispose the electric motor 50 and the first and second ECUs 70, 71.

[0073] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design modifications can be made without departing from the present invention as set forth in the claims.

[0074] 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 were described, but the present invention can be widely applied to ECUs that control the operation of electrical equipment provided in a vehicle seat device.

[0075] In the above embodiment, the first and second ECUs 70, 71 are attached to the attachment member 58 which is attached to the rotary member 30, but the ECUs may be attached directly to the rotary member 30. [Explanation of symbols]

[0076] 11a Seat cushion 14. Rotation mechanism 16···Seat cushion frame 19. Cushion side pressure receiving member 19a: The lowest end of the cushion-side pressure-receiving member 29 Base member 30 Rotating member 30a···Tapered section 30b...Side wall part 30c...Tsubabe 30d: Outer circumference of rotating member 41. Storage unit 53 Electric motors, which are electrical devices 58 Mounting member 58b...Slanted plate part 65. Blower, an electrical device 70,71···ECU C...Rotation axis

Claims

1. A vehicle seat device comprising: a seat cushion frame that supports a seat cushion; a rotation mechanism that is disposed below the seat cushion frame and that has a rotation member that supports the seat cushion frame and a base member that rotatably supports the rotation member from below; electric equipment; and an ECU that controls the operation of the electric equipment, a circular receiving portion that is open at least upward is formed in the center of the rotary member; The ECU is located within the housing portion 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 is configured such that, when the seat cushion frame is in a normal position facing forward, the ECU is disposed forward of the rotation axis of the rotating member.

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

3. 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.

4. 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.

5. the electrical device includes an electric motor that generates power to rotate the rotary 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.

6. 5. The vehicle seat according to claim 4, wherein the ECU is disposed forward of the rotation axis and rearward of the blower.

7. 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 horizontally.

Images