JP7473771B2 - Vehicle seat device - Google Patents

Description

The present invention relates to a vehicle seat device that includes a rotation mechanism having a rotating member to which a seat cushion frame that supports a seat cushion is attached, and a base member that rotatably supports the rotating member from below.

A vehicle seat device equipped with a rotation mechanism that allows the seat to be rotated relative to the floor is known from Patent Document 1, etc.

JP 2010-173491 A

However, in order to facilitate the operation of the rotating mechanism located below the seat cushion, the intrusion of foreign objects into the rotating mechanism should be prevented as much as possible, but the above-mentioned Patent Document 1 does not disclose a structure for preventing the intrusion of foreign objects into the rotating mechanism.

The present invention was made in consideration of these circumstances, and aims to provide a vehicle seat device that can prevent foreign objects from entering the rotation mechanism.

In order to achieve the above-mentioned object, the present invention has a first feature in that, in a vehicle seat device comprising a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a rotating mechanism having a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover , and when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, the cover of the seat cushion is connected to the upper rear edge of the rotating member while contacting the outer surface of the cover .

Furthermore, the present invention has a second feature in that, in a vehicle seat device equipped with a rotating mechanism having a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, and the outer surface of the cover is formed in an arc shape that bulges outward from the outside of the rotating member .

The third feature of the present invention is that in a vehicle seat device equipped with a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a rotating mechanism having a base member that rotatably supports the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, a fixed cover member that surrounds at least the base member from the rear when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, is fixedly positioned below the cover, and the fixed cover member is formed so as to be in relative slidable contact with the lower part of the cover when the occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

The fourth feature of the present invention is that in a vehicle seat device equipped with a rotating mechanism having a rotating member to which a seat cushion frame supporting a seat cushion is attached, and a base member rotatably supporting the rotating member from below, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, a fixed cover member that surrounds at least the base member from the rear when an occupant seated on the seat cushion is facing forward in the fore-and-aft direction of the vehicle is fixedly positioned below the cover, and the lower end position of a side cover that surrounds the side frame from the outside is set to be the same as the lower end position of the cover .

The present invention has a fifth feature in that, in addition to any one of the first, third, or fourth features, the outer surface of the cover is formed in an arc shape that bulges outward from the rotating member .

A sixth feature of the present invention is that, in addition to the configuration of the third or fourth feature, the cover is positioned in a position that surrounds the upper outer periphery of the rotating member from behind when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

A seventh feature of the present invention is that, in addition to any one of the configurations of the first , second, or fifth features , the cover is positioned in a position that surrounds the upper outer periphery of the rotating member from behind when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle .

The present invention has an eighth feature in that, in addition to any one of the configurations of the first to fifth and seventh features, the seat cushion frame has a pair of side frames extending linearly and supported by the rotating member, and the cover is attached to the side frames .

The present invention has a ninth feature in that, in addition to the configuration of the sixth feature, the cover is formed by extending a skin of the seat cushion .

In addition to the fourth feature, the present invention has a tenth feature in that the cover is integrally formed with at least one of the pair of side covers. Note that the concept of "enclosed" in the present invention includes not only something that is entirely surrounded, but also something that is partially surrounded.

According to the first to fourth features of the present invention, at least a portion of the circumferential direction of the upper outer periphery of the rotating member is surrounded from the outside by a cover, so that it is possible to prevent foreign matter from entering the rotating mechanism at least in the area surrounded by the cover.

Furthermore , according to the first feature of the present invention, the seat cushion cover is connected to the rear edge of the upper end of the rotating member when the occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, and the cover contacts the outer surface of the cover, so that the upper part of the cover can be connected to the seat cushion cover, and the intrusion of foreign objects into the rotating mechanism from the rear passenger seat side when the driver's seat or passenger seat is facing forward can be more effectively prevented.

In addition, according to the second and fifth features of the present invention, the outer surface of the cover is arc-shaped and bulges outward from the rotating member, so that when the cover rotates together with the seat, even if the cover comes into contact with luggage or the like on the floor inside the vehicle cabin, the cover and therefore the seat can rotate smoothly .

According to a third aspect of the present invention, a fixed cover member is fixedly disposed below the cover to surround at least the base member from the rear when an occupant sitting on the seat cushion faces forward in the vehicle front-rear direction, so that it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward. Also, since the fixed cover member is in relatively slidable contact with the lower part of the cover, it is possible to more effectively prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward.

According to a fourth aspect of the present invention, a fixed cover member that surrounds at least the base member from the rear when an occupant sitting on the seat cushion faces forward in the vehicle longitudinal direction is fixedly disposed below the cover, so that it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces forward. Also, since the lower end position of the side cover is the same as the lower end position of the cover, it is possible to prevent foreign objects from entering the rotation mechanism from the rear passenger seat side when the driver's seat or passenger seat faces in the vehicle width direction.

According to the sixth and seventh features of the present invention, when an occupant sitting on the seat cushion is facing forward in the fore-and-aft direction of the vehicle, the cover covers the upper outer periphery of the rotating member from the rear , thereby preventing foreign objects from entering the rotating mechanism from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

According to the eighth aspect of the present invention, the cover is attached to the pair of side frames of the seat cushion frame, so that the cover can be rotated together with the seat with a simple structure .

According to the ninth aspect of the present invention, since the cover is formed from the surface of the seat cushion, it is possible to prevent an increase in the number of parts when preventing foreign matter from entering the rotating mechanism.

Furthermore, according to the tenth feature of the present invention, the cover is formed integrally with at least one of the pair of side covers, which avoids an increase in the number of parts due to the arrangement of the cover and makes it easier to assemble the cover.

1 is a perspective view of a vehicle seat device according to a first embodiment; FIG. 2 is a perspective view seen from the direction of an arrow 2 in FIG. 1 . FIG. 2 is a perspective view of the vehicle shown in FIG. 1 with a seat cushion, a seat back, and a side cover removed. 6 is a cross-sectional view showing a part of the slide rail and the rotation mechanism, taken along line 4-4 in FIG. 5. 5 is a view of the slide rail and the rotation mechanism as viewed from the direction of the arrow 5 in FIG. 4 . 6 is a cross-sectional view taken along line 6-6 in FIG. 5. This is a cross-sectional view taken along line 7-7 in Figure 6. 8 is a cross-sectional view showing a part of the vehicle seat device taken along line 8-8 in FIG. 5. FIG. 9 is a cross-sectional view corresponding to FIG. 8 of the second embodiment. FIG. 11 is a perspective view corresponding to FIG. 2 of a third embodiment;

The following describes an embodiment of the present invention with reference to the attached drawings. In the following description, "front/rear," "left/right," and "up/down" refer to directions as seen by a seated occupant with the seat facing forward.

The first embodiment of the present invention will be described with reference to Figures 1 to 8. First, in Figures 1 and 2, a seat 11 of a vehicle seat device 10 mounted on a vehicle includes a seat cushion 12 that forms the seating area for an occupant and a seat back 13 that is disposed above the seat cushion 12. Side covers 14 are disposed on both sides of the seat cushion 12, and a headrest 15 that supports the head of the occupant is disposed on the upper part of the seat back 13.

Referring also to FIG. 3, the vehicle seat device 10 includes a pair of slide rails 16 that extend linearly parallel to each other with a space between them in the left-right direction to allow the seat 11 to slide, and a rotation mechanism 17 that supports the seat 11 in a rotatable manner and can move along the slide rails 16.

The seat frame 18 of the vehicle seat device 10 includes a seat cushion frame 19 that supports the seat cushion 12, and a seat back frame 20 that is connected to the seat cushion frame 19 so as to support the seat back 13 that is disposed above the seat cushion 12.

The seat cushion frame 19 has a pair of side frames 19a 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 19b connecting the front ends of the side frames 19a, and a rear pipe 19c connecting the rear ends of the pair of side frames 19a.

A cushion-side pressure-receiving member 21 is spanned between the pan frame 19b and the rear pipe 19c. This cushion-side pressure-receiving member 21 has multiple (four in this embodiment) seat springs 22 made of metal wire bent in a zigzag pattern so that it snakes left and right. The seat springs 22 are arranged so that adjacent seat springs 22 are symmetrical, and adjacent seat springs 22 are connected to each other by multiple resin intermediate connecting members 23 that are molded integrally with the seat springs 22 by insert molding.

The front ends of the seat springs 22 are engaged with locking portions 24 provided on the pan frame 19b of the seat frame 18. The rear ends of adjacent seat springs 22 are engaged with the rear pipe 19c of the seat frame 18 and are connected by a resin rear end connecting member 25 that is molded integrally with the seat springs 22 by insert molding, and the rear end connecting member 25 is formed to cover the rear pipe 19c.

The seatback frame 20 has a pair of seatback side frames 20a extending vertically and spaced apart from each other in the left-right direction, an upper frame 20b connecting the upper ends of the seatback side frames 20a, and a lower frame 20c connecting the lower ends of the pair of seatback side frames 20a.

Between the pair of seatback side frames 20a, a back-side pressure-receiving member 26 made of resin or the like and capable of elastic deformation is disposed, and this back-side pressure-receiving member 26 is spanned between the left and right seatback side frames 20a via an upper connecting wire 27 and a lower connecting wire 28.

Referring to both Figures 4 and 5, the seat frame 18 is placed on the rotation mechanism 17, which includes a base member 29 that is movable along the slide rail 16, an annular rotation member 30 that supports the seat frame 18 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. This base member 29 is positioned inside the widthwise center of the pair of slide rails 16 and below the cushion side pressure receiving member 21 in a plan view.

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 as it goes upward and is connected to the upper end of the second side wall portion 31b, an annular first flat wall portion 31d that is connected to 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 disposed at a position facing the first tapered portion 31c of the cover member 31 from the outside and is formed so that the diameter increases toward the top, a cylindrical third side wall portion 30b that rises upward from the upper end of the second tapered portion 30a so as to face the second side wall portion 31b of the cover member 31 from the outside, and a second flange portion 30c that protrudes outward from the third side wall portion 30b, and the second flange portion 30c is formed in a rectangular shape. The side frame 19a of the seat cushion frame 19 in the seat frame 18 is fastened to the second flange portion 30c with a plurality of first bolts 34 and second nuts 35.

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.

The slide rail 16 is composed of a fixed rail 41 fixed to the floor surface 33 of the vehicle and a movable rail 42 slidably fitted to the fixed rail 41. A protrusion 33a that extends in the front-rear direction of the vehicle and protrudes upward is formed on the floor surface 33, and by fixing the fixed rail 41 onto this protrusion 33a, it is possible to position the lower part of the rotation mechanism 17 lower than the lower end of the slide rail 16 in the vertical direction.

A support bracket 43 is connected to the movable rail 42, which extends to the inside of the pair of slide rails 16 and is formed integrally with the movable rail 42 or separately (separately in this embodiment), and the base member 29 is fastened to the support bracket 43 by a second bolt 45 and a second nut 46 screwed onto the second bolt 45. In other words, the base member 29 is fixedly connected to the movable rail 42 via the support bracket 43.

The support bracket 43 is formed to have, integrally, a flat mounting plate portion 43a that is placed on the movable rail 42 with its underside fixed to the movable rail 42 by welding or the like, a side plate portion 43b that extends vertically at a position adjacent to the inside of the slide rail 16 and connects to the mounting plate portion 43a at a right angle, and a flat connecting plate portion 43c that extends from the lower end of the side plate portion 43b to the opposite side to the slide rail 16 and abuts from below against the first flange portion 29c of the base member 29, and the connecting plate portion 43c is fastened to the first flange portion 29c of the base member 29.

A first hook member 47 is fixed to the side plate portion 43b of the support bracket 43 by welding or the like, and a second hook member 48 which cooperates with the first hook member 47 to form a deformation suppression mechanism 49 that suppresses the upward lift of the rotating member 30 relative to the movable rail 42 is fixed to the third side plate portion 30b of the rotating member 30 by welding or the like and engages with the first hook member 47 while allowing the rotating member 30 to rotate.

The first hook member 47 is fixed to the support bracket 43 at a total of four locations corresponding to the front and rear ends of the pair of left and right movable rails 42, and the second hook member 48 is fixed to the third side plate portion 30b of the rotating member 30 at four locations corresponding to the first hook member 47.

Referring to Figures 6 and 7 together, the locking and unlocking of the rotating member 30 with respect to the base member 29 and the cover member 31 is switched by operating a locking member 52 supported by the rotating member 30, and a rattle suppression member 53 that is linked to the operation of the locking member 52 is disposed between the cover member 31 and the rotating member 30.

A tapered extrusion member 54, which increases in diameter as it goes upward, is disposed between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30. This extrusion member 54 has accommodation holes 55 extending long in the circumferential direction of the extrusion member 54 at multiple locations spaced apart in the circumferential direction, and a rattle suppression member 53 interposed between the first tapered portion 31c of the cover member 31 and the second tapered portion 30a of the rotating member 30 is accommodated in the accommodation hole 55.

On the other hand, the locking member 52 is rotatably supported on the rotating member 30 via a shaft 51 having a vertical axis, and this locking member 52 can rotate between a locked position in which it engages with the first tapered portion 31c of the cover member 31 to prevent rotation of the rotating member 30 as shown in FIG. 6(a) and an unlocked position in which it disengages from the first tapered portion 31c to allow rotation of the rotating member 30 as shown in FIG. 6(b), and is biased to rotate toward the locked position by a spring 56.

The connecting arm 52a of the locking member 52 is inserted into an insertion hole 57 formed in the second tapered portion 30a of the rotating member 30, and the tip of the connecting arm 52a can be inserted into a connecting hole 58 formed in the pushing member 54, and the locking member 52 is connected to the pushing member 54 by inserting the tip of the connecting arm 52a into the connecting hole 58. As shown in FIG. 6(b), when the locking member 52 is in the unlocked position, the connecting arm 52a is connected to the connecting hole 58, and a pressing force in the rotation direction is applied to the pushing member 54 from the connecting arm 52a.

The engagement arm 52b of the locking member 52 engages with the first through hole 59 formed in the second tapered portion 30a of the rotating member 30 and the second through hole 60 formed in the first tapered portion 31c of the cover member 31 in the locked position shown in FIG. 6(a), but disengages from the second through hole 60 and releases the engagement with the cover member 31 in the unlocked position shown in FIG. 6(b). Between the locked position and the unlocked position, the engagement arm 52b operates to straddle the push-out member 54.

The second tapered portion 30a of the rotating member 30 has a recess 61 that accommodates a portion of the rattle suppression member 53 and allows the rattle suppression member 53 to fit tightly.

The rattle suppression member 53 is formed in a wedge shape with a slope 53a that gradually decreases in height as it advances in the movement direction 62 of the push-out member 54 in response to the operation of the locking member 52 from the unlocked position to the locked position, and the recess 61 that allows the rattle suppression member 53 to be tightly fitted is formed in a triangular shape that has a recess side slope 61a facing the slope 53a and accommodates a part of the rattle suppression member 53.

A coil spring 63 is compressed between the front end of the housing hole 55 formed in the push-out member 54 along the moving direction 62 and the rattle suppression member 53, and the spring force exerted by the coil spring 63 biases the rattle suppression member 53 in the opposite direction to the moving direction 62.

When the locking member 52 is in the locked position, as shown in FIG. 6(a), the inclined surface 53a of the rattle suppression member 53 tightly abuts against the recess side inclined surface 61a of the recess 61, so that the rattle suppression member 52 tightly contacts the rotating member 30 and the cover member 31, thereby preventing rattle of the rotating member 30.

When the locking member 52 is in the unlocked position, as shown in FIG. 6(b), the rear end of the longitudinal ends of the accommodation hole 55 along the moving direction 62 comes into contact with the rattle suppression member 53, and the rattle suppression member 53 is pushed in the moving direction 62 against the force of the coil spring 63, and the inclined surface 53a of the rattle suppression member 53 moves away from the recess side inclined surface 61a, and the rattle prevention state is released.

Referring also to Figure 8, at least a portion of the circumferential direction of the upper outer periphery of the rotating member 30 in the rotating mechanism 17 is surrounded from the outside by a cover 65, and in this embodiment, when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, the cover 65 is positioned in a position that surrounds the upper part of the third side wall portion 30b and the second flange portion 30c of the rotating member 30 from the rear.

In addition, when the occupant sitting on the seat cushion 12 faces forward in the vehicle longitudinal direction, the cover 12a of the seat cushion 12 is connected to the rear end edge of the upper end of the rotating member 30, i.e., the rear end edge of the second flange 30c, and the upper part of the cover 65 is connected to the connection part of the cover 12a to the second flange 30c.

The cover 65 is attached to a pair of side frames 19a that form part of the seat cushion frame 19 via mounting arms 66 (see Figure 5).

The cover 65 is integrally made up of a flat upper plate 65a, a lower plate 65b facing the upper plate 65a from below, a connecting plate 65c connecting the ends of the upper plate 65a and the lower plate 65b opposite the rotating member 30, and an end wall 65d connecting both ends in the width direction of the upper plate 65a, the lower plate 65b, and the connecting plate 65c. The outer surface of the cover 65, i.e., the outer surface of the connecting plate 65c, is formed in an arc shape that bulges outward from the rotating member 30.

In addition, a fixed cover member 67 that surrounds at least the base member 29 from the rear when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle is fixedly positioned below the cover 65, and this fixed cover member 67 is attached, for example, to the rear end portion of the fixed rail 41 of the slide rail 16 in the fore-and-aft direction of the vehicle.

The fixed cover member 67, like the cover 65, has a flat upper plate 67a, a lower plate 67b facing the upper plate 67a from below, a connecting plate 67c connecting the ends of the upper plate 67a and the lower plate 67b on the opposite side to the rotating member 30, and an end wall 67d connecting both ends in the width direction of the upper plate 67a, the lower plate 67b, and the connecting plate 67c, and the outer surface of the connecting plate 67c is formed in an arc shape that bulges outward from the rotating member 30.

The fixed cover member 67 is in relatively slidable contact with the lower part of the cover 65, and the upper plate part 67a at the upper end part of the fixed cover member 67 is in relatively slidable contact with the lower surface of the lower plate 65b of the cover 65.

The side frame 19a is covered from the outside by the side cover 14, and the lower end position of this side cover 14 is set to be slightly above the upper surface of the mounting plate portion 43a of the support bracket 43 in the vertical direction as shown in Figure 4, and is in the same vertical position as the lower end position of the cover 65 as shown in Figure 2.

Next, the operation of this first embodiment will be explained. At least a portion of the circumferential direction of the upper outer periphery of the rotating member 30, which constitutes part of the rotating mechanism 17 equipped in the vehicle seat device 10, is surrounded from the outside by the cover 65, so that it is possible to prevent foreign matter from entering the rotating mechanism 17 at least in the area surrounded by the cover 65.

In addition, the cover 65 is positioned to surround the upper outer periphery of the rotating member 30 from the rear when the occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, thereby preventing foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

In addition, when an occupant sitting on the seat cushion 12 faces forward in the vehicle longitudinal direction, the cover 12a of the seat cushion 12 is connected to the upper end rear edge of the rotating member 30 while contacting the outer surface of the cover 65, so that the upper part of the cover 65 can be connected to the cover 12a of the seat cushion 12, and the intrusion of foreign objects into the rotating mechanism 17 from the rear passenger seat side can be more effectively prevented when the driver's seat or passenger seat is facing forward.

In addition, the seat cushion frame 19 has a pair of side frames 19a which extend linearly and are supported by the rotating member 30, and the cover 65 is attached to the side frames 19a , so that the cover 65 can be rotated together with the seat 11 with a simple structure.

In addition, the outer surface of the cover 65 is formed in an arc shape that bulges outward from the rotating member 30, so that when the cover 65 rotates together with the seat 11, even if the cover 65 comes into contact with luggage or the like on the floor of the vehicle interior, the cover 65 and therefore the seat 11 can rotate smoothly.

In addition, when the occupant sitting on the seat cushion 12 faces forward in the fore-and-aft direction of the vehicle, a fixed cover member 67 that surrounds at least the base member 29 from the rear is fixedly positioned below the cover 65, thereby preventing foreign objects from entering the rotation mechanism 17 from the rear passenger seat side when the driver's seat or passenger seat is facing forward.

Moreover, since the fixed cover member 67 is in relatively slidable contact with the lower part of the cover 65, it is possible to more effectively prevent foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat and passenger seat are facing forward. In addition, since the outer surface of the fixed cover member 67 is formed in an arc shape that bulges outward from the rotating member 30, like the cover 65 above it, it is possible to minimize the occurrence of a gap between the seat 11 including the cover 65 and the fixed cover member 67 during the rotation of the seat 11, and it is possible to effectively prevent foreign objects from entering the rotating mechanism 17.

In addition, the lower end position of the side cover 14 that covers the seat cushion 12 from the outside is set to be the same as the lower end position of the cover 65, so that it is possible to prevent foreign objects from entering the rotating mechanism 17 from the rear passenger seat side when the driver's seat and passenger seat are facing in the vehicle width direction.

Figure 9 shows a second embodiment of the present invention, and parts corresponding to those in the first embodiment are simply shown with the same reference numerals, and detailed descriptions are omitted.

A rotating mechanism 17 is disposed below the seat cushion 72, which constitutes the seat 71 together with the seat back 13. A cover mounting plate 74 that protrudes rearward in the longitudinal direction of the vehicle is fixed to the second tapered portion 30a of a rotating member 30 that constitutes part of the rotating mechanism 17, when the occupant sitting on the seat cushion 72 faces forward in the longitudinal direction of the vehicle.

On the other hand, a part of the skin 72a of the seat cushion 72 extends downward to form a cover 75 that surrounds the upper outer periphery of the rotating member 30 from the rear when the occupant sitting on the seat cushion 72 faces forward in the vehicle longitudinal direction, and a lower edge of this cover 75 is fixedly connected to the cover mounting plate 74, and in this embodiment, a hook 76 fixed to the lower edge of the cover 75 by sewing is engaged with an edge of the cover mounting plate 74. As a result, when the occupant sitting on the seat cushion 72 faces forward in the vehicle longitudinal direction, the cover 75 surrounds the upper outer periphery of the rotating member 30 from the rear and is fixedly connected to the cover mounting plate 74, but the lower edge of the cover 75 may be directly fixed to the cover mounting plate 74 by adhesion or the like.

Further, a fixed cover member 77 is fixedly disposed below the cover 75 so as to surround at least the base member 29 from the rear in a state in which the occupant seated on the seat cushion 72 faces forward in the vehicle front-rear direction.

This fixed cover member 77 is attached, for example, to the rear end of the fixed rail 41 of the slide rail 16 in the vehicle longitudinal direction, and is formed integrally with a flat vertical wall portion 77a extending vertically along a plane perpendicular to the longitudinal direction of the slide rail 16, and a flat protruding plate portion 77b protruding rearward in the vehicle longitudinal direction from the upper end of the vertical wall portion 77a.

The rear edge of the protruding plate portion 77b along the vehicle front-rear direction is in contact with the hook 76 and is formed in an arc shape centered on the rotation axis of the rotating member 30 to facilitate smooth rotation of the hook 76 which rotates together with the rotating member 30.

In this second embodiment, the cover 75 is formed from the surface 72a of the seat cushion 72, so that an increase in the number of parts can be avoided when preventing foreign objects from entering the rotation mechanism 17.

Figure 10 shows a third embodiment of the present invention, and parts corresponding to those in the first and second embodiments are shown with the same reference numerals, and detailed explanations are omitted.

At least a portion of the circumferential direction of the upper outer periphery of the rotating member 30 in the rotating mechanism 17 (see the first and second embodiments) is surrounded from the outside by a cover 78, and in this embodiment, when an occupant sitting on the seat cushion 12 is facing forward in the fore-and-aft direction of the vehicle, the occupant is surrounded from the rear by the cover 78.

This cover 78 is basically configured in the same way as the cover 65 of the first embodiment described above, but is formed integrally with at least one of the pair of side covers 14 that surround from the outside the pair of side frames 12 (see the first embodiment) that constitute a part of the seat cushion frame 12. Moreover, the lower end position of the side cover 14 and the lower end position of the cover 77 are set to be the same, and a fixed cover member 67 is fixedly disposed below the cover 78.

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-described embodiment, the covers 65, 78 are configured to rotate with the seats 11, 71, but it is also possible for the covers 65, 78 to be in a fixed position.

10: Vehicle seat device 12: Seat cushion 12a: Cover 14: Side cover 17: Rotation mechanism 19: Seat cushion frame 19a: Side frame 29: Base member 30: Rotation member 65, 75, 78: Covers 67, 77: Fixed cover member

Claims (10)

In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
a seat cushion (12) having a rear end edge at an upper end of the rotating member (30) and a seat cover (12a) thereof being in contact with an outer surface of the cover (65, 78) when the occupant sitting on the seat cushion (12) is facing forward in the fore-and-aft direction of the vehicle. In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
A vehicle seat apparatus, characterized in that an outer surface of the cover (65, 78) is formed in an arc shape that bulges outwardly of the rotating member (30). In a vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached and a base member (29) that rotatably supports the rotation member (30) from below, at least a portion of an upper outer periphery of the rotation member (30) along a circumferential direction is surrounded from the outside by a cover (65, 75, 78),
a fixed cover member (67, 77) that surrounds at least the base member (29) from the rear in a state in which an occupant sitting on the seat cushion (12, 72) faces forward in the vehicle front-rear direction, and is fixedly disposed below the cover (65, 75, 78);
A vehicle seat device characterized in that, when an occupant sitting on the seat cushion (12) is facing forward in the fore-and-aft direction of the vehicle, the fixed cover member (67) is formed so as to be in relative slidable contact with a lower portion of the cover (65, 78). A vehicle seat device including a rotation mechanism (17) having a rotation member (30) to which a seat cushion frame (19) supporting a seat cushion (12, 72) is attached, and a base member (29) rotatably supporting the rotation member (30) from below,
At least a portion of the circumferential direction of the upper outer periphery of the rotating member (30) is surrounded from the outside by a cover (65, 78),
a fixed cover member (67, 77) that surrounds at least the base member (29) from the rear in a state in which an occupant sitting on the seat cushion (12, 72) faces forward in the vehicle front-rear direction, and is fixedly disposed below the cover (65, 75, 78);
The seat cushion frame (19) has a pair of side frames (19a) that extend linearly and are supported by the rotating member (30),
A vehicle seat apparatus, characterized in that a lower end position of a side cover (14) surrounding the side frame (19a) from the outside is set to be the same as a lower end position of the cover (65, 78). The vehicle seat device according to any one of claims 1, 3, and 4, characterized in that the outer surface of the cover (65, 78) is formed in an arc shape that bulges outward from the rotating member (30). The vehicle seat device according to claim 3 or 4, characterized in that the cover (65, 75, 78) is disposed in a position surrounding the upper outer periphery of the rotating member (30) from the rear when the occupant sitting on the seat cushion (12, 72) faces forward in the vehicle longitudinal direction. The vehicle seat device according to any one of claims 1, 2, and 5, characterized in that the cover (65, 75, 78) is disposed in a position surrounding the upper outer periphery of the rotating member (30) from the rear when the occupant sitting on the seat cushion (12, 72) faces forward in the vehicle longitudinal direction. The vehicle seat device according to any one of claims 1 to 3, characterized in that the seat cushion frame (19) has a pair of side frames (19a) extending linearly and supported by the rotating member ( 30 ), and the cover (65) is attached to those side frames (19a). The vehicle seat device according to claim 6, characterized in that the cover (75) is formed by extending the surface (72a) of the seat cushion (72). The vehicle seat device according to claim 4, characterized in that the cover (78) is integrally formed with at least one of the pair of side covers (14).

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