Vehicular seat device

Abstract

To enable not only miniaturization of a base member but also miniaturization of a rotation mechanism on a vehicular seat device that includes: a pair of slide rails installed on a floor surface of a vehicle that are arranged in parallel with each other so as to make the seat slidable; and a rotation mechanism including a rotary member for supporting a seat frame for the seat and a base member movable along the slide rails while supporting the rotary member so as to be rotatable.SOLUTION: In a vehicular seat device, a base member 29 is disposed on an inside more than a center part in a width direction of a pair of slide rails 13 in plan view.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle seat device including a pair of slide rails arranged parallel to each other on a floor surface of a vehicle to enable a seat to slide, and a rotation mechanism having a rotating member that supports a seat frame of the seat and a base member that is rotatably supported by the rotating member and can move along the slide rails. [Background technology]

[0002] Such a vehicle seat device is known from Patent Document 1, for example. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-173491 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the device disclosed in the above Patent Document 1, a pair of front and rear mounting brackets (corresponding to the base members of the present invention) constituting part of the rotation mechanism are bridged between the upper rails (corresponding to the movable rails of the present invention) of a pair of left and right slide rails with both ends of the mounting brackets being connected to the outer surfaces of the upper rails. As a result, both ends of the mounting brackets protrude outward from the upper rails, leading to an increase in the size of the rotation mechanism.

[0005] An object of the present invention is to provide a vehicle seat device which enables a reduction in the size of the base member and therefore the size of the rotation mechanism. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the present invention provides a vehicle seat device including a pair of slide rails arranged parallel to each other on a floor surface of a vehicle to enable a seat to slide, a rotating member supporting a seat frame of the seat, and a rotation mechanism having a base member that is rotatably supporting the rotating member and that is movable along the slide rails, wherein the base member is positioned inward from the widthwise center of the pair of slide rails when viewed in a plane.

[0007] In addition to the configuration of the first characteristic, the present invention has a second characteristic in that the slide rail comprises a fixed rail fixed to the floor surface and a movable rail slidably fitted into the fixed rail, the base member is connected via a connecting means to a support bracket that is connected to the movable rail so as to extend inwardly of the pair of slide rails and is formed integrally or separately from the movable rail, a first hook member fixed to the movable rail or the support bracket, and a second hook member fixed to the rotating member and engages with the first hook member while allowing the rotating member to rotate, thereby forming a deformation suppression mechanism that suppresses upward lift of the rotating member relative to the movable rail, and the first hook member is positioned at a position that avoids overlap with the connecting means in a planar view.

[0008] The present invention has a third feature in that, in addition to the configuration of the second feature, the connecting means is disposed lower than the deformation suppression mechanism in the up-down direction.

[0009] In addition to the configuration of the second or third characteristic, the present invention further provides a method for connecting a pair of the slides. The fourth feature is that the slide rails are arranged adjacent to each other from the inside in the parallel direction of the slide rails.

[0010] A fifth feature of the present invention is that, in addition to any of the configurations of the second to fourth features, a ring-shaped rotational support part is provided on the base member so as to rotatably support the rotating member, and is positioned between the pair of slide rails in a planar view, and the position in a planar view of the connecting means, which is arranged on at least one side of a virtual vertical plane that passes through the center of the rotational support part and is perpendicular to the pair of slide rails, is set so that it is between the slide rails and the rotational support part on a virtual straight line that passes through the center of the rotational support part and the center of the connecting means.

[0011] A sixth feature of the present invention is that, in addition to the configuration of the fifth feature, the vertical position of the support bracket is set so as to overlap with a portion of the rotating member when the support bracket is viewed in a direction perpendicular to the rotation axis of the rotating member.

[0012] The present invention has a seventh feature in that, in addition to any one of the configurations of the second to sixth features, the connecting means is positioned in a position where at least a portion of the connecting means overlaps with the slide rail in a side view from a direction perpendicular to the longitudinal direction of the slide rail.

[0013] The present invention has an eighth feature in that, in addition to any one of the configurations of the second to seventh features, the connecting means is arranged vertically lower than the connection portion of the support bracket, which is separate from the movable rail, to the movable rail.

[0014] A ninth feature of the present invention is that, in addition to any one of the configurations of the second to eighth features, the support bracket has a flat mounting plate portion that is placed on the movable rail with its underside fixed to the movable rail, the lower end of the first hook member is fixed to the upper surface of the mounting plate portion, and the connecting means is positioned vertically lower than the mounting plate portion.

[0015] A tenth feature of the present invention is that, in addition to the configuration of the fifth feature, the position in a plan view of the connecting means arranged on at least one side of the virtual vertical plane is set so as to be between the slide rail and the rotating member on a virtual straight line passing through the center of the rotating member and the center of the connecting means, and at least a portion of the connecting means is set so as to overlap with the rotating member in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail.

[0016] The present invention has an eleventh feature in that, in addition to the configuration of the tenth feature, the connecting means is set at a position where at least a part of the connecting means overlaps with the rotating member in a plan view.

[0017] A twelfth feature of the present invention is that, in addition to the configuration of the ninth feature, the portion of the mounting plate portion that is fixed to the movable rail is positioned so as to overlap the first hook member in a plan view.

[0018] Further, in addition to any one of the first to twelfth features of the present invention, the seat frame of the seat is a seat frame that supports a seat cushion and has a pair of side frames extending linearly and spaced apart from each other, a one-end connecting member that connects one ends of the side frames, and an other-end connecting member that connects the other ends of the pair of side frames; a seat back frame having a pair of seat back side frames arranged side by side at a distance from each other and extending in the up-down direction, an upper frame connecting upper ends of the seat back side frames, and a lower frame connecting lower ends of the pair of seat back side frames to support a seat back; A cushion side pressure receiving member that receives a load from above the seat cushion is connected to the one end A thirteenth feature is that a back side pressure receiving member that is spanned between the connecting member and the other end connecting member and receives a load from the front of the seat back is spanned between a pair of the seat back side frames, and the base member is positioned below the cushion side pressure receiving member and inside the pair of the side frames. Effect of the Invention

[0019] According to the first feature of the present invention, the base member that constitutes part of the rotation mechanism is located inside the widthwise center of the pair of slide rails, making it possible to reduce the size of the base member and therefore the rotation mechanism.

[0020] In addition, according to a second feature of the present invention, a base member is connected via a connecting means to a support bracket that is connected to a movable rail that constitutes part of the slide rail and extends inwardly of the slide rail, and a first hook member that constitutes part of the deformation suppression mechanism that suppresses upward lift of the rotating member relative to the movable rail and is fixed on the movable rail or the support bracket is positioned at a position that avoids overlap with the connecting means in a planar view, thereby avoiding mutual interference between the connecting means and the deformation suppression mechanism.

[0021] According to the third feature of the present invention, since the connecting means is located below the deformation suppression mechanism in the vertical direction, the connecting means is located in a position that avoids interference with the deformation suppression mechanism, thereby preventing the rotation mechanism from becoming taller.

[0022] According to the fourth aspect of the present invention, since the connecting means is located adjacent to the inner sides of the slide rails in the juxtaposition direction of the slide rails, the height of the rotation mechanism can be made lower.

[0023] According to a fifth feature of the present invention, an annular rotation support part provided on a base member is located between a pair of slide rails in a plan view, and a connecting means is arranged on at least one side of an imaginary vertical plane that passes through the center of the rotation support part and is perpendicular to the pair of slide rails, and the position of the connecting means in a plan view is between the slide rails and the rotation support part on an imaginary straight line that passes through the rotation support part and the center of the connecting means, so that the connecting means can be arranged by effectively utilizing the space between the annular rotation support part and the slide rails.

[0024] According to the sixth feature of the present invention, the support bracket is positioned so as to overlap a portion of the rotating member when viewed in a direction perpendicular to the rotation axis of the rotating member, thereby making it possible to avoid an increase in size of the rotating mechanism in the vertical direction due to the positioning of the support bracket.

[0025] According to the seventh feature of the present invention, at least a portion of the connecting means overlaps with the slide rail in a side view from a direction perpendicular to the longitudinal direction of the slide rail. Therefore, the connecting means can be positioned at a position where mutual interference with the deformation suppression mechanism occurs, while avoiding an increase in the vertical size of the rotation mechanism due to such positioning.

[0026] According to an eighth feature of the present invention, the connecting means is located below the connection portion of the support bracket, which is separate from the movable rail, to the movable rail, so that the height of the slide rail can be effectively utilized while preventing the connecting means from protruding upward from the movable rail.

[0027] According to the ninth feature of the present invention, the lower surface of the flat mounting plate portion of the support bracket is fixed to the movable rail, the lower end of the first hook member of the deformation suppression mechanism is fixed to the upper surface of the mounting plate portion, and the connecting means is positioned below the mounting plate portion, so that a structure can be easily constructed that avoids mutual interference between the deformation suppression mechanism and the connecting means.

[0028] According to the tenth feature of the present invention, the position in a plan view of the connecting means, which is arranged on at least one side of a virtual vertical plane that passes through the center of the rotating support part and is perpendicular to a pair of slide rails, is between the slide rails and the rotating member on a virtual straight line that passes through the centers of the rotating member and the connecting means, so that the connecting means can be arranged by effectively utilizing the space between the rotating member and the slide rail, and since at least a portion of the connecting means overlaps with the rotating member in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail, the size of the rotation mechanism can be prevented from increasing.

[0029] According to the eleventh aspect of the present invention, at least a portion of the connecting means overlaps with the rotating member in a plan view, so that the rotating mechanism can be made more compact.

[0030] According to the twelfth feature of the present invention, the portion where the mounting plate portion is fixed to the movable rail overlaps with the first hook member in a planar view, so that the slide rail can efficiently exert a bracing force when a deformation force is applied to the first hook member of the deformation suppression mechanism.

[0031] Furthermore, according to the thirteenth feature of the present invention, the base member is located inside a pair of side frames which form part of the seat frame and extend linearly so as to be spaced apart from each other, making it possible to reduce the size of the base member. [Brief description of the drawings]

[0032] [Figure 1] FIG. 4 is a perspective view showing a state in which the seat frame is placed on the seat device. [Diagram 2] 2 is a cross-sectional view showing a part of the slide rail and the rotation mechanism, taken along line 2-2 in FIG. [Diagram 3] 3 is a view of the slide rail and the rotation mechanism as viewed from the direction of the arrow 3 in FIG. 2. [Figure 4] 4 is a view of the slide rail and the rotation mechanism as seen from the direction of the arrow 4 in FIG. 2. [Diagram 5]5 is a cross-sectional view taken along line 5-5 in FIG. 3, comparing a state in which the locking member is in a locked position (a) with a state in which the locking member is in an unlocked position (b). [Figure 6] 6 is a cross-sectional view taken along line 6-6 in FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following description, "front and rear," "left and right," and "up and down" refer to a seat in which a seated occupant faces forward. In status It refers to the direction as seen by the occupant in question.

[0034] First, in FIG. 1, the vehicle seat device includes a pair of slide rails 13 provided on a floor surface 12 of the vehicle, extending in a straight line parallel to each other with a space between them in the left-right direction to enable a seat 11 to slide, and a rotation mechanism 14 that supports the seat 11 rotatably and can move along the slide rails 13.

[0035] The seat frame 15 of the seat 11 includes a seat cushion frame 16 that supports the seat cushion 11a, and a seat back frame 17 that is connected to the seat cushion frame 16 so as to support a seat back 11b that is disposed above the seat cushion 11a.

[0036] The seat cushion frame 16 has a pair of side frames 16a arranged to extend linearly in the front-to-rear direction and be spaced apart from each other in the left-right direction, a pan frame 16b serving as one-end connecting member connecting the front ends of the side frames 16a, and a rear pipe 16c serving as the other-end connecting member connecting the rear ends of the pair of side frames 16a.

[0037] A cushion-side pressure-receiving member 19 is bridged between the pan frame 16b and the rear pipe 16c. This cushion-side pressure-receiving member 19 has a plurality of seat springs 20 (four in this embodiment) formed by bending a metal wire in a zigzag pattern so as to snake left and right, and the seat springs 20 are arranged so that adjacent seat springs 20 are symmetrical with each other, and adjacent seat springs 20 are connected to each other by a plurality of resin intermediate connecting members 21 molded integrally with the seat springs 20 by insert molding.

[0038] 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 frame 15. The rear ends of adjacent seat springs 20 are engaged with the rear pipe 16c of the seat frame 15 and are connected by a resin rear end connecting member 23 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.

[0039] The seatback frame 17 has a pair of seatback side frames 17a extending in the vertical 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.

[0040] A back-side pressure-receiving member 24 made of resin or the like and capable of elastically deforming 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.

[0041] 2 to 4, the seat frame 15 is placed on the rotation mechanism 14, and this rotation mechanism 14 includes a base member 29 movable along the slide rail 13, an annular rotating member 30 that supports the seat frame 15 and is rotatably supported on the base member 29, and a cover member 31 that covers a portion of the rotating member 30 from above and is fixed to the base member 29.

[0042] The base member 29 has a first bottom wall portion 29a having an annular shape, 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, the first flange portion 29c being formed in a rectangular shape. The base member 29 is disposed on the inside of the width direction center portion of the pair of slide rails 13 and below the cushion side pressure receiving member 19 in a plan view. That is, the base member 29 is disposed between a pair of left and right VF1 that pass through the width direction center portion of the pair of slide rails 13 and extend in the front-rear direction of the vehicle.

[0043] 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 as to have a larger diameter as it extends 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.

[0044] The rotating member 30 has a second tapered portion 30a arranged at a position facing the first tapered portion 31c of the cover member 31 from the outside and formed so as to have a larger diameter toward the top, a cylindrical third side wall portion 30b rising 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 projecting outward from the third side wall portion 30b, the second flange portion 30c being formed in a rectangular shape. The side frames 16a of the seat cushion frame 16 in the seat frame 15 are fastened to the second flange portion 30c by a plurality of first bolts 34 and second nuts 35.

[0045] A pair of second imaginary vertical planes VF2 passing through the inner edges of the pair of side frames 16a are located inside the first imaginary vertical plane VF1 in the left-right direction, but the base member 29 is disposed inside the second imaginary vertical planes VF2. In other words, the base member 29 is disposed inside the pair of side frames 16a.

[0046] The rotating member 30 is rotatably supported by a ring-shaped rotation support portion 36 of the base member 29 via a bearing 37. The rotation support portion 36 is formed such that a cross-sectional shape of the first bottom wall portion 29a and the first side wall portion 29b of the base member 29 is substantially L-shaped. Made can be.

[0047] The bearing 37 is configured by holding balls 39 at a plurality of positions in the circumferential direction of an annular retainer 38, and an annular recess 40 for allowing the balls 39 to roll is formed in the first tapered portion 31c of the rotating member 30.

[0048] The slide rail 13 comprises a fixed rail 41 which is provided on the floor surface 12 and extends in the fore-and-aft direction of the vehicle while protruding upwardly and is fixed onto a protrusion portion 12a provided on the floor surface 12, and a movable rail 42 which is slidably fitted onto the fixed rail 41. A support bracket 43 which extends inwardly of the pair of slide rails 13 and is formed integrally with or separately from the movable rail 42 (separate in this embodiment) is connected to the movable rail 42, and the base member 29 is connected to the support bracket 43 via a connecting means 44.

[0049] In this embodiment, the connecting means 44 comprises a second bolt 45 inserted into the support bracket 43 and the base member 29 from below, and a second nut 46 screwed onto the second bolt 45.

[0050] A first hook member 47 is fixed onto the movable rail 42 or the support bracket 43 (in this embodiment, the support bracket 43), and a second hook member 48 which cooperates with the first hook member 47 to form a deformation suppression mechanism 49 that suppresses the rotating member 30 from floating upward relative to the movable rail 42 is fixed to the rotating member 30 and engages with the first hook member 47 while allowing the rotating member 30 to rotate.

[0051] 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, respectively, at positions that avoid overlap with the connecting means 44 in a planar view, and the second hook member 48 is fixed to the underside of the second flange portion 30c of the rotating member 30 at four locations corresponding to the first hook member 47.

[0052] In addition, the connecting means 44 is positioned vertically lower than the deformation suppression mechanism 49 and lower than the portion where the support bracket 43, which is separate from the movable rail 42, is connected to the movable rail 42.

[0053] That is, in this embodiment, the support bracket 43 is formed to have, integrally, a flat mounting plate portion 43a which is placed on the movable rail 42 so that its underside is fixed to the movable rail 42 by welding or the like, a side plate portion 43b which extends in the vertical direction at a position adjacent to the inside of a pair of the slide rails 13 and is connected to the mounting plate portion 43a at a right angle, and a flat connecting plate portion 43c which extends from the lower end of the side plate portion 43b to the opposite side of the slide rail 13 and abuts against the first flange portion 29c of the base member 29 from below, and the lower end of the first hook member 47 is fixed to the upper surface of the mounting plate portion 43a, and the second bolt 45 of the connecting means 44 is inserted through the connecting plate portion 43c and the first flange portion 29c while abutting the enlarged head portion 45a against the underside of the connecting plate portion 43c.

[0054] The first hook member 47 of the deformation suppression mechanism 49 is fixed to the upper surface of the mounting plate portion 43a of the support bracket 43, and the fixing portion 50 of the mounting plate portion 43a to the movable rail 42 is positioned at a position overlapping with the first hook member 47 in a planar view.

[0055] The connecting means 44 is disposed adjacent to the pair of slide rails 13 from the inside in the juxtaposition direction of the slide rails 13, i.e., in the left-right direction. Concatenation The second bolt 45 of the means 44 is The above The connecting plate portion 43c and the first flange portion 29c are inserted into a position close to the side plate portion 43b located adjacent to the inside of the slide rail 13. Moreover, at least a part of the connecting means 44 is disposed at a position overlapping with the slide rail 13 in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail 13, and in this embodiment, the entire connecting means 44 overlaps with the slide rail 13 in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail 13.

[0056] Further, the connecting means 44 is arranged on at least one side of a third imaginary vertical plane VF3 which passes through the center of the rotating support portion 36 and is perpendicular to the pair of slide rails 13, and in this embodiment, the connecting means 44 is arranged at two locations spaced apart in the front and rear on the front side of the third imaginary vertical plane VF3 and at two locations spaced apart in the front and rear on the rear side of the third imaginary vertical plane VF3.

[0057] Moreover, the positions of the connecting means 44 arranged at two locations spaced apart in the front-to-rear direction on the front side of the third imaginary vertical plane VF3 in a plan view are set to be between the slide rail 13, the rotation support part 36, and the rotating member 30 on the first and second imaginary straight lines L1, L2 passing through the centers of the rotation support part 36 and the rotating member 30 and the center of the connecting means 44, i.e., the centers of the second bolt and the second nut, and the positions of the connecting means 44 arranged at two locations spaced apart in the front-to-rear direction on the rear side of the third imaginary vertical plane VF3 in a plan view are set to be between the slide rail 13, the rotation support part 36, and the rotating member 30 on the third and fourth imaginary straight lines L3, L4 passing through the rotation support part 36, the rotating member 30, and the center of the connecting means 44.

[0058] In addition, at least a part (all of it in this embodiment) of the connecting means 44 is set to overlap with the rotating member 30 in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail 13. That is, a first imaginary horizontal plane HF1 passing through an upper end of the connecting means 44 and a second imaginary horizontal plane HF2 passing through a lower end of the connecting means 44 are set to cross the rotating member 30.

[0059] Further, the vertical position of the support bracket 43 is set so as to overlap a part of the rotating member 30 when the support bracket 43 is viewed in a direction perpendicular to the rotation axis of the rotating member 30. In other words, a third imaginary horizontal plane HF3 passing through the upper end of the support bracket 43 and a fourth imaginary horizontal plane HF4 passing through the lower end of the support bracket 43 are set so as to intersect the rotating member 30.

[0060] Furthermore, the connecting means 44 is set at a position where at least a portion of it overlaps the rotating member 30 in a planar view, and in this embodiment, all of the connecting means 44 are covered from above by the second flange portion 30c of the rotating member 30.

[0061] 5 and 6, the locked and unlocked states of the rotating member 30 relative to the base member 29 and the cover member 31 are switched by operating a locking member 52 supported by the rotating member 30, and a rattle suppression member 53 linked to the operation of this locking member 52 is disposed between the cover member 31 and the rotating member 30.

[0062] A tapered push-out 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. The push-out member 54 is provided with accommodation holes 55 extending long in the circumferential direction of the push-out member 54 at a plurality of circumferentially spaced locations. moon The suppressing member 53 is received in the receiving hole 55 .

[0063] 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 is rotatable between a locked position where 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. 5(a) and an unlocked position where it disengages from the first tapered portion 31c to allow rotation of the rotating member 30 as shown in FIG. 5(b), and is urged to rotate toward the locked position by a spring 56.

[0064] A connecting arm portion 52a of the locking member 52 is inserted into an insertion hole 57 formed in the second tapered portion 30a of the rotating member 30, and a tip portion of the connecting arm portion 52a can be inserted into a connecting hole 58 formed in the push-out member 54, and the locking member 52 is connected to the push-out member 54 by inserting the tip portion of the connecting arm portion 52a into the connecting hole 58. As shown in Fig. 5(b), when the locking member 52 is in the unlocked position, this connecting arm portion 52a is connected to the connecting hole 58, and a pressing force in the rotation direction of the push-out member 54 is applied from the connecting arm portion 52a to the push-out member 54.

[0065] In addition, the engagement arm 52b of the locking member 52 engages with a first through hole 59 formed in the second tapered portion 30a of the rotating member 30 and a second through hole 60 formed in the first tapered portion 31c of the cover member 31 in the locked position shown in FIG. 5(a), but disengages from the second through hole 60 to release the engagement with the cover member 31 in the unlocked position shown in FIG. 5(b), and the engagement arm 52b operates to straddle the push-out member 54 between the locked position and the unlocked position.

[0066] A recess 61 for accommodating a part of the rattle suppressing member 53 is formed in the second tapered portion 30a of the rotating member 30 so that the rattle suppressing member 53 can be tightly fitted therein.

[0067] The rattle suppression member 53 is formed in a wedge shape having a slope 53a whose height gradually decreases as it progresses 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, which enables the rattle suppression member 53 to be tightly fitted in, is formed in a triangular shape having a recess side slope 61a opposite to the slope 53a and configured to accommodate a part of the rattle suppression member 53.

[0068] In addition, a coil spring 63 is compressed between the front end portion along the movement direction 62 of the longitudinal ends of the accommodating hole 55 formed in the push-out member 54 and the rattle suppression member 53, and the spring force exerted by this coil spring 63 urges the rattle suppression member 53 in the direction opposite to the movement direction 62.

[0069] When the lock member 52 is in the locked position, as shown in FIG. 5(a), the inclined surface 53a of the rattle suppressing member 53 tightly abuts against the recess-side inclined surface 61a of the recess 61, thereby preventing the rattle suppressing member 53 comes into close contact with the rotating member 30 and the cover member 31, thereby preventing the rotating member 30 from rattling.

[0070] When the locking member 52 is in the unlocked position, as shown in FIG. 5(b), the rear end of the accommodating hole 55 along the moving direction 62 comes into contact with the rattle suppressing member 53, and the rattle suppressing member 53 is pushed in the moving direction 62 against the force of the coil spring 63, and the inclined surface 54 of the rattle suppressing member 53 is pressed against the force of the coil spring 63. 3a However, the rattle suppressing member 53 moves away from the recess side inclined surface 61a, and the rattle suppressing state is released.

[0071] Next, the operation of this embodiment will be explained. A pair of slide rails 13 arranged parallel to each other are provided on the floor surface 12 of the vehicle to enable the seat 11 to slide, and a base member 29 which can move along the slide rails 13 while rotatably supporting a rotating member 30 which supports the seat frame 15 of the seat 11 is positioned inside the widthwise center of the pair of slide rails 13 in a plan view, thereby making it possible to reduce the size of the base member 29 and, ultimately, the rotation mechanism 14.

[0072] In addition, the slide rail 13 comprises a fixed rail 41 fixed on the floor surface 12 and a movable rail 42 slidably fitted onto the fixed rail 41, and the base member 29 is connected to the movable rail 42 so as to extend inside the pair of slide rails 13 and is connected via connecting means 44 to a support bracket 43 formed integrally with or separately from the movable rail 42 (separate in this embodiment), and a deformation suppression mechanism 49 is formed by a first hook member 47 fixed on the movable rail 42 or the support bracket 43 and a second hook member 48 fixed to the rotating member 30 and engaging with the first hook member 47 while allowing the rotating member 30 to rotate, and the first hook member 47 is positioned at a position that avoids overlap with the connecting means 44 in a planar view, thereby making it possible to avoid mutual interference between the connecting means 44 and the deformation suppression mechanism 49.

[0073] Furthermore, since the connecting means 44 is positioned vertically lower than the deformation suppression mechanism 49, the connecting means 44 is located at a position that avoids interference with the deformation suppression mechanism 49, thereby preventing the rotation mechanism 14 from becoming taller.

[0074] Furthermore, since the connecting means 44 is disposed at a position adjacent to the inner side of the pair of slide rails 13 in the parallel direction of the slide rails 13, the height of the rotation mechanism 14 can be made lower.

[0075] In addition, the annular rotation support portion 36, which is provided on the base member 29 so as to rotatably support the rotating member 30, is positioned between the pair of slide rails 13 in a planar view, and the position of the connecting means 44, which is positioned on at least one side (both front and back in this embodiment) of a third imaginary vertical plane VF3 that passes through the center of the rotation support portion 36 and is perpendicular to the pair of slide rails 13, in a planar view is set to be between the slide rail 13, the rotating member 30 and the rotation support portion 36 on first to fourth imaginary straight lines L1 to L4 that pass through the centers of the rotating member 30 and the rotation support portion 36 and the center of the connecting means 44, so that the connecting means 44 can be positioned by effectively utilizing the space between the rotating member 30 and the annular rotation support portion 36, and the slide rails 13.

[0076] Furthermore, since the vertical position of the support bracket 43 is set so that it overlaps with a portion of the rotating member 30 when the support bracket 43 is viewed in a direction perpendicular to the rotation axis of the rotating member 30, it is possible to avoid the rotation mechanism 14 becoming larger in the vertical direction due to the positioning of the support bracket 43.

[0077] Furthermore, since at least a portion of the connecting means 44 overlaps with the slide rail 13 when viewed from the side from a direction perpendicular to the longitudinal direction of the slide rail 13, it is possible to position the connecting means 44 at a position where mutual interference with the deformation suppression mechanism 49 occurs, while avoiding the rotation mechanism 14 from becoming larger in the vertical direction due to such positioning.

[0078] Furthermore, since the connecting means 44 is positioned vertically lower than the connection portion of the support bracket 43, which is separate from the movable rail 42, to the movable rail 42, the height of the slide rail 13 can be effectively utilized while preventing the connecting means 44 from protruding upward from the movable rail 42.

[0079] In addition, the support bracket 43 has a flat mounting plate portion 43a that is placed on the movable rail 42 with its underside fixed to the movable rail 42, the lower end of the first hook member 47 is fixed to the upper surface of the mounting plate portion 43a, and the connecting means 44 is positioned lower in the vertical direction than the mounting plate portion 43a, so that a structure that avoids mutual interference between the deformation suppression mechanism 49 and the connecting means 44 can be easily constructed.

[0080] Furthermore, since at least a portion of the connecting means 44 is set to overlap with the rotating member 30 in a side view seen from a direction perpendicular to the longitudinal direction of the slide rail 13, the size of the rotating mechanism 14 can be prevented from increasing.

[0081] Furthermore, since the connecting means 44 is set at a position where at least a portion thereof overlaps with the rotating member 30 in a plan view, the rotating mechanism 14 can be made more compact.

[0082] Furthermore, the fixing portion 50 of the mounting plate portion 43a of the support bracket 43 to the movable rail 42 is positioned at a position overlapping with the first hook member 47 of the deformation suppression mechanism 49 in a planar view, so that the slide rail 13 can efficiently exert a bracing force when a deformation force is applied to the first hook member 47 of the deformation suppression mechanism 49.

[0083] Furthermore, the seat cushion frame 16 supporting the seat cushion 11a has a pair of side frames 16a extending linearly in the front-to-rear direction so as to be aligned at a distance 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, and a cushion side pressure-receiving member 19 that receives a load from above the seat cushion 11a is bridged between the pan frame 16b and the rear pipe 16c, and the base member 29 is positioned below the cushion side pressure-receiving member 19 and inside the pair of side frames 16a, which also makes it possible to reduce the size of the base member 29.

[0084] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the present invention described in the claims.

[0085] For example, in the above embodiment, the slide rail 13 extends in the longitudinal direction of the vehicle to enable the seat 11 to be moved in the longitudinal direction of the vehicle, but the slide rail may be one that moves the seat 11 in the lateral direction of the vehicle.

[0086] Furthermore, the pair of slide rails do not need to have the same shape, and may have different shapes as long as they extend parallel to each other.

[0087] Furthermore, in the above embodiment, the base member 29, the rotation member 30 and the cover member 31 are each formed in an annular shape, but as long as the seat 11 can be rotated, they are not limited to being annular, and may be substantially disc-shaped. [Explanation of symbols]

[0088] 11...sheets 12. Floor surface 13···Slide rail 14 Rotation mechanism 15 Seat frame 16···Seat cushion frame 16a···Side frame 16b... Pan frame which is a connecting member at one end 16c: Rear pipe which is the other end connecting member 17 Seat back frame 17a Seat back side frame 17b Upper frame 17c···Lower frame 19. Cushion side pressure receiving member 24 Back side pressure receiving member 29...Base member 30...Rotating member 36 Rotation support part 41 Fixed rail 42 Movable rail 43 Support bracket 43a Mounting plate 44...Connection means 47...First hook member 48...Second hook member 49. Deformation suppression mechanism 50... Adhesion area L1, L2, L3, L4... Virtual lines VF3: Virtual vertical plane

Claims

[Claim 1] A vehicle seat device including a pair of slide rails (13) arranged parallel to each other on a floor surface (12) of a vehicle to enable a seat (11) to slide, a rotating member (30) supporting a seat frame (15) of the seat (11), and a rotation mechanism (14) having a base member (29) capable of moving along the slide rails (13) while rotatably supporting the rotating member (30), wherein the vehicle seat device is characterized in that the base member (29) is positioned inward of the widthwise center of the pair of slide rails (13) when viewed in a plane.

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