JP2019156143A - Support structure of vehicular seat - Google Patents

Abstract

To provide a support structure of a vehicular seat capable of moving a seat to an optimum oscillation position in a lateral direction and a longitudinal direction without rotating the seat in a yaw direction.SOLUTION: A support structure of a vehicular seat 1 includes: a base member (11) which is mounted on a floor 8 of a vehicle V; an intermediate member (13) which is supported by the base member so as to be slidable in a first direction in a plan view through a first sliding mechanism 23; and a seat support member (15) which is supported by the intermediate member so as to be slidable in a second direction crossing the first direction in the plan view through a second sliding mechanism 26 and supports the seat 1. The first sliding mechanism 23 has a curved shaped track having a curvature center 23X at a position higher than a center of gravity C of the seat 1 including a seated person. The second sliding mechanism 26 has a curved shaped track having a curvature center 26X at a position higher than the center of gravity C of the seat 1 including the seated person.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a vehicle seat support structure.

  In recent years, research on a technique for controlling the position of a seat on which an occupant is seated based on the traveling state of a vehicle has been underway. As such a technique, the seat portion of the seat is supported by the seat support mechanism so as to be able to rotate in the lateral direction, and detects any one of the lateral rotational position, lateral rotational speed, lateral rotational acceleration, and lateral acceleration of the vehicle. A technique is known in which the control device operates the driving means for driving the seat so that the seat portion of the seat is set to the optimum lateral rotation position by using the output signal from (see, for example, Patent Documents 1 and 2). ).

JP 7-149171 A JP 2001-163098 A

  However, in the conventional seat setting technology, the driving unit moves the position of the seat based on the output signal from the sensor, and thus there is a case where the seat cannot be smoothly moved to the optimum lateral rotation position. .

  Here, it is conceivable that a concave curved surface portion is formed on the floor of the vehicle, and the sheet is supported by three or more spherical support members disposed on the curved surface portion. However, when such a support structure is adopted, the sheet can be moved (swinged) to the optimum rotational position in the lateral direction and the front-rear direction (hereinafter referred to as a swinging position), but the sheet is rotated in the yaw direction. End up.

  In view of such a background, an object of the present invention is to provide a vehicle seat support structure that can move a seat to an optimal swing position in the lateral direction and the front-rear direction without rotating the seat in the yaw direction. .

  In order to solve such a problem, an embodiment of the present invention is a support structure for a vehicle seat (1), which is a base member (11, 12) attached to a floor (8) of a vehicle (V). , 41, 42) and intermediate members (13, 45, 51) supported by the base member so as to be slidable in the first direction (left-right direction) in plan view via the first sliding mechanism (23, 44). ) And the second sliding mechanism (26, 53), and is supported by the intermediate member so as to be slidable in a second direction (front-rear direction) intersecting the first direction in plan view, and the vehicle seat is A seat support member (15, 52) for supporting, and the first sliding mechanism has a curvature center (23X, 44X) at a position higher than the center of gravity (C) of the vehicle seat including a seated person. The second sliding mechanism includes a seated person. And having a track forming a curved shape having a center of curvature at a position higher than the center of gravity of the vehicle seat (26X, 53X).

  According to this configuration, the vehicle seat can slide in the first direction via the first sliding mechanism, and can slide in the second direction via the second sliding mechanism. Since the first sliding mechanism and the second sliding mechanism have a center of curvature at a position higher than the center of gravity of the vehicle seat including the seated person, the vehicle seat including the seated person can move laterally or When a direction inertial force or a force such as gravity is applied, it moves to the optimal swing position in the lateral direction or the front-rear direction around the center of curvature. As a result, it becomes difficult for the seated person to sense the lateral acceleration and the acceleration in the front-rear direction, so that riding comfort is improved. On the other hand, since the intermediate member can slide only in the first direction relative to the base member and the seat support member can slide only in the second direction relative to the intermediate member, the vehicle seat rotates in the yaw direction. Absent.

  In the above configuration, the curvature center (23X, 44X) of the track of the first sliding mechanism and the curvature center (26X, 53X) of the track of the second sliding mechanism are high corresponding to the head of the seated person. It would be nice to be there.

  According to this configuration, even if the vehicle seat swings in the lateral direction or the front-rear direction, the position of the seated person's head is prevented from shifting. Therefore, the feeling of the seated person swinging with respect to the vehicle is reduced, and the uncomfortable feeling due to the swing of the vehicle seat is reduced.

  Further, in the above configuration, the base member includes a plate-like base member (11) having an upper surface (11a) recessed into a spherical shape, and the intermediate member has a spherical shape convex downward. The sheet support member includes a plate-like sheet support member (15) having a lower surface (15b) bulged into a spherical shape, and the first sliding mechanism (23) is disposed on the upper surface of the plate-like base member. A plurality of first guide grooves (21) extending in the first direction and a lower surface (13b) of the plate-like intermediate member, and a plurality of rolling in cooperation with the first guide grooves. A plurality of corresponding first guide grooves (22) for receiving the member (14), wherein the second sliding mechanism (26) is formed on the upper surface (13a) of the plate-like intermediate member. A plurality of second guide grooves (24) extending in the direction, and the plate-like sheet Formed on the lower surface of the support member (15b), may have a plurality of corresponding second guide groove (25) and for receiving a plurality of rolling members (16) in cooperation with the second guide groove.

  According to this configuration, the plate-shaped intermediate member is assembled on the plate-shaped base member via the rolling member, and the plate-shaped sheet support member is assembled on the plate-shaped intermediate member via the rolling member. Since the support structure can be assembled, assembly work is easy. Further, high assembly accuracy is not required, and the number of parts can be reduced.

  Further, in the above configuration, the plate-like intermediate member (13) is provided at both edge portions along the first direction, and the plate-like base members (11) are slidable in the first direction and vertically. A base-side holding member (27) that cannot be separated and provided at both edge portions along the second direction of the plate-like intermediate member, and the plate-like sheet support member (15) are slidable with respect to each other in the second direction. It is preferable to further include a sheet side holding member (30) that can move and cannot be separated in the vertical direction.

  According to this configuration, the plate-like intermediate member is held by the base-side holding member so as not to be vertically separated from the plate-like base member, and the plate-like sheet support member is held by the sheet-side holding member with respect to the plate-like intermediate member. It is held so as not to be separated in the vertical direction. As described above, since the vehicle seat is allowed to swing in the lateral direction and the front-rear direction and the vehicle seat is prevented from moving upward, the vehicle seat can be supported in a stable state. .

  In the above configuration, the plate-like sheet support member (15) has an upper surface (15a) that is recessed into a spherical shape, so that the seated person's sciatus is located above the center of the plate-like sheet support member. The vehicle seat (1) may be disposed.

  By providing a support structure between the floor and the vehicle seat, the seating surface of the vehicle seat tends to be high, and the cushioning property of the seating surface may be sacrificed to keep the seating surface low. . According to this configuration, since the upper surface of the plate-like sheet support member is recessed at the portion where the seated person's ischium is located, it is possible to suppress the cushioning property of the seat surface from being lowered.

  In the above configuration, the first sliding mechanism (44) includes a pair of first rails (parallel to each other) formed on one of the base member (41, 42) and the intermediate member (45, 51). 41) and at least one pair of first sliders (43) formed on the other of the base member and the intermediate member and slidably coupled to the pair of first rails in the first direction. The second sliding mechanism (53) includes a pair of second rails (51) formed in parallel with each other on one of the intermediate member and the sheet support member (52), and the intermediate member and the sheet support. And at least one pair of second sliders (52) formed on the other of the members and slidably coupled to the pair of second rails in the second direction.

  According to this structure, the structure of a 1st sliding mechanism and a 2nd sliding mechanism becomes simple, and the weight of a support structure can be restrained comparatively small.

  Further, in the above configuration, at least one pair of the first sliders (43) is coupled to the pair of first rails (41) so as not to be separated upward, and at least one pair of the second sliders ( 52) may be coupled to the pair of second rails (51) so as not to be separated upward.

  According to this configuration, the intermediate member is held so as not to be vertically separated from the base member by the coupling of the first slider to the first rail, and the seat support member is coupled by the coupling of the second slider to the second rail. Is held so as not to be separated in the vertical direction with respect to the intermediate member. As described above, since the vehicle seat is allowed to swing in the lateral direction and the front-rear direction and the vehicle seat is prevented from moving upward, the vehicle seat can be supported in a stable state. .

  In the above configuration, the intermediate member (45, 51) has a rectangular frame shape having both edge members (46, 47) along the first direction and both edge members (48, 49) along the second direction. It is preferable that the vehicle seat (1) is arranged so that a seated person's sciatus is located above the middle part of the intermediate member.

  By providing a support structure between the floor and the vehicle seat, the seating surface of the vehicle seat tends to be high, and the cushioning property of the seating surface may be sacrificed to keep the seating surface low. . According to this configuration, since the intermediate member having the rectangular frame shape does not exist in the portion where the seated person's ischium is located, it is possible to suppress the cushioning property of the seat surface from being lowered.

  In the above configuration, the first sliding mechanism (23) includes a first foreign matter removing member (34, 35) for removing foreign matter accumulated on the track of the first sliding mechanism, and the second The sliding mechanism (26) may include a second foreign matter removing member (34, 35) for removing foreign matter accumulated on the track of the second sliding mechanism.

  In the above support structure, a force such as a lateral or longitudinal inertial force or gravity acts on the vehicle seat including the seated person with respect to the floor, so that the vehicle seat can 2 A passive structure that swings about the center of curvature of the orbit of the sliding mechanism. Therefore, if foreign matter such as dust or sand accumulates on the track of the sliding mechanism, the vehicle seat may be disturbed. According to this configuration, since the first sliding mechanism includes the first foreign matter removing member and the second sliding mechanism includes the second foreign matter removing member, the vehicle seat is prevented from swinging due to the accumulation of foreign matters. Can be suppressed.

  In the above configuration, the vehicle seat (1) includes a seat cushion (2) supported by the seat support member (15), a seat back (3) coupled to a rear portion of the seat cushion, And leg rests (71, 81) connected to the front portion of the seat cushion.

  According to this configuration, the leg of the seated person can be separated from the floor. Therefore, it is possible to eliminate the uncomfortable feeling that the seated person learns by twisting or dragging the leg of the seated person when the vehicle seat swings.

  Moreover, the said structure WHEREIN: It is good for the said vehicle seat (1) to provide the driving operator which receives at least 1 operation (84, 85, 86) of the acceleration of the said vehicle, deceleration, and steering.

  According to this configuration, it is possible to eliminate the uncomfortable feeling that the seated person learns by changing the distance and angle to the driver when the vehicle seat swings.

  Further, in the above configuration, a biasing member (between the vehicle seat (1) and the floor (8)) that generates a biasing force that biases the vehicle seat toward a predetermined neutral position ( 61, 63) may be further provided.

  According to this configuration, it is possible to suppress the vehicle seat from swinging in response to force. Moreover, it can suppress that a vehicle seat does not return from a rocking | fluctuation position to a neutral position by sliding friction.

  Moreover, the said structure WHEREIN: It is good to further provide the attenuation | damping member (62) provided between the said vehicle seat (1) and the said floor (8), which attenuates the shaking of the said vehicle seat.

  According to this configuration, the shaking of the vehicle seat urged toward the neutral position by the urging member can be quickly converged.

  Further, in the above configuration, the lock member (66) capable of taking a fixing position for fixing the vehicle seat (1) to the floor (8) and a release position for releasing the fixing of the vehicle seat to the floor. ) And a control device (68) for driving and controlling the lock member.

  According to this configuration, the control device fixes and unlocks the vehicle seat on the floor based on manual input by the occupant or based on a control signal corresponding to a switching state between automatic driving and manual driving of the vehicle. be able to.

  Thus, according to the present invention, it is possible to provide a vehicle seat support structure that can move the seat to the optimal swing position in the lateral direction and the front-rear direction without rotating the seat in the yaw direction.

The side view which shows the support structure of the sheet | seat which concerns on 1st Embodiment. The rear view which shows the support structure of the sheet | seat shown in FIG. (A) Plan view, (B) Rear view, (C) Side view of the sheet support mechanism shown in FIG. FIG. 1 is a rear view of the seat support mechanism when the seat shown in FIG. 1 receives a rightward inertial force. FIG. 1 is a side view of the seat support mechanism when the seat shown in FIG. 1 receives a forward inertial force. 1 is a rear view when the seat shown in FIG. 1 receives a rightward inertial force. The principal part expansion perspective view of the sliding mechanism which concerns on 1st Embodiment. (A) Plan view, (B) Rear view, (C) Side view of a sheet support mechanism in the sheet support structure according to the second embodiment. FIG. 8 is a partially cutaway perspective view of the sliding mechanism shown in FIG. Rear views of the seat according to the second embodiment when (A) steady state and (B) rightward inertial force are received. The principal part expansion perspective view of the sliding mechanism which concerns on 2nd Embodiment. The rear view which shows the coupling structure of the sheet | seat and floor concerning other embodiment The rear view which shows the coupling structure of the sheet | seat and floor concerning other embodiment The rear view which shows the (A) fixed release state of the coupling | bonding structure of the sheet | seat and floor concerning other embodiment, (B) fixed state The perspective view which shows schematic structure of the sheet | seat which concerns on other embodiment. The perspective view which shows schematic structure of the sheet | seat which concerns on other embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the front-rear, left-right, and up-down directions are determined based on the traveling direction of the automobile V with reference to the state where the automobile V is stopped on a horizontal road surface. About the same structure provided in 1 pair on either side, a common number is attached | subjected and description is abbreviate | omitted.

<< First Embodiment >>
First, a support structure for a vehicle seat (hereinafter simply referred to as a seat 1) according to a first embodiment will be described with reference to FIGS. FIG. 1 is a side view showing a support structure for a seat 1 according to the first embodiment, and FIG. 2 is a rear view showing the support structure for the seat 1 shown in FIG. As shown in FIGS. 1 and 2, the seat 1 includes a seat cushion 2 that forms a seating surface, a seatback 3 that is connected to a rear portion of the seat cushion 2 and forms a backrest surface, and an upper portion of the seatback 3. And a headrest 4 coupled to the headrest 4. The seat back 3 is coupled to the seat cushion 2 so as to be tiltable about a horizontal axis by a known reclining mechanism 5, and the angle with respect to the seat cushion 2 can be changed and fixed. The seat 1 may be any of a driver seat, a passenger seat, and a rear seat.

  The seat cushion 2 includes a steel seat cushion frame, and is configured by covering the seat cushion frame with a pad and a skin (not shown). The seat back 3 has a steel seat back frame and is configured by being covered with a pad and a skin (not shown). The pad is formed of a cushioning material having elasticity such as polyurethane foam, and the epidermis is formed of genuine leather, synthetic leather, fabric or the like. The seat cushion frame includes a pair of left and right side members 6 and a plurality of cross members 7 that connect the left and right side members 6.

  The seat 1 is attached to the floor 8 of the automobile V so as to be slidable in the front-rear direction by a pair of left and right slide rails 9 coupled to the floor 8 of the automobile V. The front / rear slide rail 9 includes a lower rail 9a fixed to the floor 8 and an upper rail 9b coupled to the lower rail 9a so as to be slidable in the front / rear direction. Extends in the direction. Further, the seat 1 can be swung in the roll direction and the pitch direction with respect to the floor 8 of the automobile V by a seat support mechanism 10 coupled to the upper rail 9b of the front and rear slide rail 9, more specifically than the seat surface. It is attached so as to be swingable in the left-right direction and swingable in the front-rear direction around a high position.

  The seat 1 may be attached to the floor 8 via a rotation mechanism (not shown) that can rotate in the yaw direction with respect to the floor 8 of the automobile V. When the automobile V is a vehicle that performs automatic driving, it is preferable that the yaw rotation angle of the seat 1 can be changed and fixed with respect to the floor 8 by the rotation mechanism not only in the rear seat and the passenger seat but also in the driver seat. Thereby, for example, when the automobile V performs automatic driving, the seat 1 can face sideward or rearward not only in the rear seat and the passenger seat but also in the driver seat. Here, the description will be given on the assumption that the seat 1 faces forward (the traveling direction of the automobile V).

  3A is a plan view, FIG. 3B is a rear view, and FIG. 3C is a side view of the sheet support mechanism 10 shown in FIG. 1. As shown in FIGS. 1 to 3, the sheet support mechanism 10 includes a plate-like base member 11 that has a downwardly convex spherical shape. The plate-like base member 11 is a member having a substantially constant thickness and having a rectangular shape in plan view, and has an upper surface 11a that is recessed into a spherical shape and a lower surface 11b that bulges downward into a spherical shape. The plate-like base member 11 is arranged so that two of the four sides are along the front-rear direction and the remaining two sides are along the left-right direction. The plate-like base member 11 is fixed to the upper rail 9b (FIG. 1) of the left and right front and rear slide rails 9 by base brackets 12 arranged at four corners.

  On the plate-like base member 11, a plate-like intermediate member 13 having a downwardly convex spherical shape having a curvature similar to that of the plate-like base member 11 is disposed. The plate-like intermediate member 13 is a member having a substantially constant thickness and having a rectangular shape in plan view having the same size as that of the plate-like base member 11, and has an upper surface 13a recessed into a spherical shape and a spherical shape downward. It has a bulged lower surface 13b. The plate-like base member 11 is arranged so that two of the four sides are along the front-rear direction and the remaining two sides are along the left-right direction. The plate-like intermediate member 13 is supported by the plate-like base member 11 with a substantially constant gap via a plurality of rolling members 14 interposed between the plate-like base member 11.

  On the plate-like intermediate member 13, a plate-like sheet support member 15 having a downwardly convex spherical shape having the same degree of curvature as the plate-like intermediate member 13 is disposed. The plate-like sheet support member 15 is a member having a substantially constant thickness and having a rectangular shape in plan view having the same size as the plate-like intermediate member 13. The lower surface 15b bulges out. The plate-like sheet support member 15 is arranged so that two of the four sides are along the front-rear direction and the remaining two sides are along the left-right direction. The plate-like sheet support member 15 is supported by the plate-like intermediate member 13 with a substantially constant gap via a plurality of rolling members 16 interposed between the plate-like intermediate member 13. The plate-like base member 11 is fixed to the left and right side members 6 by seat brackets 17 arranged at the four corners, and supports the seat 1.

  As shown in FIG. 1 and FIG. 2, the seat 1 is arranged such that the seated person's sciatus is located above the central portion of the plate-like sheet support member 15.

  As shown in FIG. 3B, a pair of front and rear first guide grooves 21 extending in the left-right direction is formed on the upper surface 11a of the plate-like base member 11 along the front edge portion and the rear edge portion. ing. On the lower surface 13b of the plate-like intermediate member 13, a pair of front and rear corresponding first guide grooves 22 extending in the left-right direction at positions facing the first guide grooves 21 are formed along the front edge portion and the rear edge portion. Has been. The first guide groove 21 and the corresponding first guide groove 22 receive the rolling member 14 in cooperation with each other, and slide in the left-right direction with the rolling of the rolling member 14. One sliding mechanism 23 is configured. The track of the first sliding mechanism 23 formed by the first guide groove 21 and the corresponding first guide groove 22 has a center of curvature 23X at a height corresponding to the head of the seated person as shown in FIG. It has a curved shape.

  The curvature center 23X of the track of the first sliding mechanism 23 is higher than the center of gravity C of the seat 1 including the seated person (that is, the center of gravity C of the seat 1 and the seated person seated on the seat 1 combined). It is in. In addition, each curvature center 23X of the track | orbit of the 1st sliding mechanism 23 of front and back is just above a corresponding track | orbit, and has mutually shifted | deviated to the front-back direction. As shown in FIG. 1, in a side view, the curvature center 23X of the track of the first sliding mechanism 23 on the rear side is located near the head of the seated person, and the track of the first sliding mechanism 23 on the front side is located. The curvature center 23X is located in front of the seated person's head. The track formed by the first guide groove 21 (FIG. 3B) or the like of the first sliding mechanism 23 is not limited to a pair of front and rear, but may be formed by three or more, or may be one. .

  As shown in FIG. 3C, a pair of left and right second guide grooves 24 extending in the front-rear direction, which is a direction intersecting the left-right direction, are formed on the upper surface 13a of the plate-like intermediate member 13 on the left and right side edges. It is formed along the part. On the lower surface 15 b of the plate-like sheet support member 15, a pair of left and right corresponding second guide grooves 25 extending in the front-rear direction at positions facing the second guide grooves 24 are formed along the left and right side edges. ing. The second guide groove 24 and the corresponding second guide groove 25 cooperate with each other to receive the above-mentioned rolling member 16, and slide in the front-rear direction with the rolling member 16 rolling. A two-sliding mechanism 26 is configured. The orbit of the second sliding mechanism 26 formed by the second guide groove 24 and the corresponding second guide groove 25 is orthogonal to the orbit of the first sliding mechanism 23 in plan view as shown in FIG. As shown in FIG. 1, it has a curved shape having a center of curvature 26X at a height corresponding to the head of the seated person.

  The curvature center 26X of the track of the second sliding mechanism 26 is also higher than the center of gravity C of the seat 1 including the seated person. Further, the curvature centers 26X of the trajectories of the left and right second sliding mechanisms 26 are directly above the corresponding trajectories and are shifted from each other in the left-right direction. As shown in FIG. 2, in the rear view, the center of curvature 26 </ b> X of the left and right tracks of the second sliding mechanism 26 is located on the left and right sides of the seated person's head. The track formed by the second guide groove 24 (FIG. 3C) or the like of the second sliding mechanism 26 is not limited to a pair of left and right, but may be formed of three or more, or may be one. .

  In the illustrated first sliding mechanism 23 and second sliding mechanism 26, the rolling members 14 and 16 are balls, and the first guide groove 21 (FIG. 3B), the corresponding first guide groove 22, The cross sections of the two guide grooves 24 (FIG. 3C) and the corresponding second guide grooves 25 are substantially semicircular. In another example, the rolling members 14 and 16 may be cylindrical rollers, and the guide grooves (21 and 24) and the corresponding guide grooves (22 and 25) may have a rectangular cross section.

  At both front and rear edges along the left-right direction of the plate-like intermediate member 13, a base-side holding member 27 that holds the plate-like base members 11 slidable in the left-right direction and cannot be separated in the up-down direction is provided. . The base side holding member 27 is fixed to the front surface and the rear surface of the plate-like intermediate member 13, a portion extending downward from the front surface and the rear surface of the plate-like intermediate member 13, and a portion extending from the lower end to the inside in the front-rear direction. It has an L-shaped cross-sectional shape and has a lower surface 11 b of the plate-like base member 11. A pair of first holding guide grooves 28 are formed on the opposing surfaces of the base side holding member 27 and the plate-like base member 11, and a plurality of rolling members 29 are received in the pair of first holding guide grooves 28. As a result, the sliding resistance of both members is reduced.

  The left and right edges of the plate-like intermediate member 13 along the front-rear direction are provided with sheet-side holding members 30 that hold the plate-like sheet support members 15 slidable with respect to each other in the front-rear direction and cannot be separated in the vertical direction. It has been. The sheet-side holding member 30 is fixed to the left and right side surfaces of the plate-like intermediate member 13, a portion extending downward from the left and right side surfaces of the plate-like intermediate member 13, and a portion extending from the lower end to the inside in the left-right direction And has an L-shaped cross-sectional shape that faces the upper surface 15 a of the plate-like sheet support member 15. A pair of second holding guide grooves 31 are formed on the opposing surfaces of the sheet side holding member 30 and the plate-like sheet support member 15, and a plurality of rolling members 32 are received in the pair of second holding guide grooves 31. As a result, the sliding resistance of both members is reduced. The sheet support mechanism 10 is configured as described above.

  FIG. 4 is a rear view of the seat support mechanism 10 corresponding to FIG. 3B when the seat 1 shown in FIG. 1 receives a rightward inertial force. As shown in FIG. 4, the plate-like intermediate member 13 can slide in the left-right direction via the first sliding mechanism 23 due to the above-described configuration of the sheet support mechanism 10. When the plate-like intermediate member 13 slides in the left-right direction, the plate-like sheet support member 15 slides in the left-right direction together with the plate-like intermediate member 13. The sheet-side holding member 30 is provided so as not to interfere with the plate-like base member 11 when the plate-like intermediate member 13 slides in the left-right direction.

  FIG. 5 is a side view of the sheet support mechanism 10 corresponding to FIG. 3C when the seat 1 shown in FIG. 1 receives a forward inertial force. As shown in FIG. 5, the plate-like sheet support member 15 can slide in the front-rear direction via the second sliding mechanism 26 due to the above-described configuration of the sheet support mechanism 10. When the plate-like sheet support member 15 slides in the front-rear direction, the plate-like intermediate member 13 does not slide in the front-rear direction with respect to the plate-like base member 11. The base-side holding member 27 is provided so as not to interfere with the plate-like sheet support member 15 when the plate-like sheet support member 15 slides in the front-rear direction.

  6 is a rear view corresponding to FIG. 2 when the seat 1 shown in FIG. 1 receives an inertial force in the right direction. By configuring the seat support mechanism 10 in this way, as shown in FIG. 6, when the seat 1 receives an inertial force in the right direction due to, for example, a left turn of the automobile V, the first sliding mechanism 23. To slide right. More specifically, since the first sliding mechanism 23 has the curvature center 23X at a position higher than the center of gravity C of the seat 1 including the seated person, the seat 1 including the seated person has the curvature of the track of the first sliding mechanism 23. The pendulum centered on the center 23X swings to the right so as to move the center of gravity C to the right, slides on the plate-like base member 11 to the right, and moves to the optimal swing position. On the contrary, when the seat 1 receives an inertial force in the left direction due to the right turn of the automobile V, the seat 1 slides in the left direction via the first sliding mechanism 23. Further, when the vehicle body is tilted to the right even when the automobile V is stopped or traveling straight, the seat 1 is directed rightward with respect to the plate-like base member 11 as shown in FIG. Take the posture of sliding. Conversely, when the vehicle body is tilted to the left, the seat 1 takes a posture of sliding leftward with respect to the plate-like base member 11.

  Although not shown, since the seat 1 can slide in the front-rear direction via the second sliding mechanism 26, for example, when the vehicle 1 receives an inertial force in the rearward direction due to the acceleration of the automobile V, the seat 1 And slides backward. More specifically, the seat 1 shown in FIG. 1 swings backward so that the pendulum centered on the curvature center 26X of the track of the second sliding mechanism 26 moves the center of gravity C backward, and the plate-like intermediate member Slide 13 backwards. Conversely, when the seat 1 receives a forward inertial force due to the deceleration of the automobile V, it slides forward via the second sliding mechanism 26. Further, when the vehicle body is tilted forward or backward even when the automobile V is stopped or traveling straight, the seat 1 slides forward or backward with respect to the plate-like intermediate member 13 due to gravity. Take the posture.

  Since the seat 1 moves to the optimal swinging position by sliding as described above, it becomes difficult for the seated person to sense the lateral acceleration and the longitudinal acceleration, so that the riding comfort is improved. On the other hand, the plate-like intermediate member 13 can slide only in the left-right direction with respect to the plate-like base member 11 and the plate-like sheet support member 15 can slide only in the front-rear direction with respect to the plate-like intermediate member 13. 1 does not rotate in the yaw direction.

  Since the center of curvature 23X (FIG. 2) of the first sliding mechanism 23 and the center of curvature 26X (FIG. 1) of the second sliding mechanism 26 are at a height corresponding to the head of the seated person. Even if the seat 1 swings in the lateral direction or the front-rear direction, the position of the head of the seated person is suppressed from shifting. As a result, the sensation of the seated person himself / herself with respect to the vehicle V is reduced, and the uncomfortable feeling due to the swing of the seat 1 is reduced.

  FIG. 7 is an enlarged perspective view of a main part of the sliding mechanism (23, 26) according to the first embodiment. The configuration shown in FIG. 7 is similarly applied to the first sliding mechanism 23 and the second sliding mechanism 26 with the front and rear and the left and right reversed. Here, the first sliding mechanism 23 will be described as an example. In FIG. 7, reference numerals related to the second sliding mechanism 26 are shown in parentheses.

  As shown in FIG. 7A, the left and right end surfaces of the plate-like intermediate member 13 are closed with the end portions of the corresponding first guide grooves 22 (not shown in the drawing), and the plate-like base member 11 has the first end. A resin sweeper 34 that has a shape corresponding to the guide groove 21 and enters the first guide groove 21 is attached. The sweeper 34 suppresses the entry of foreign matter such as dust and sand from the end portions of the first guide groove 21 and the corresponding first guide groove 22 into the interior during normal operation. When the plate-like intermediate member 13 slides in the left-right direction with respect to the plate-like base member 11, the sweeper 34 functions as a foreign matter removing member that scrapes the foreign matter accumulated in the first guide groove 21 to the outside.

  Alternatively, a brush 35 as shown in FIG. 7B may be attached instead of the sweeper 34. The brush 35 closes the end portions (not shown in the drawing) of the corresponding first guide groove 22 on the left and right end surfaces of the plate-like intermediate member 13 and enters the first guide groove 21 of the plate-like base member 11. Provided. The brush 35 suppresses the entry of foreign matter such as dust and sand from the end portions of the first guide groove 21 and the corresponding first guide groove 22 into the interior during normal operation. Further, when the plate-like intermediate member 13 slides in the left-right direction with respect to the plate-like base member 11, the brush 35 functions as a foreign matter removing member that scrapes the foreign matter accumulated in the first guide groove 21 to the outside.

  As described above, the seat support mechanism 10 is configured such that the seat 1 includes the first sliding mechanism 23 when a force such as an inertial force or gravity in the lateral direction or the front-rear direction acts on the seat 1 including the seated person. This is a passive structure that swings around the centers of curvature 23X and 26X of the orbit of the second sliding mechanism 26. Therefore, if foreign matters such as dust and sand accumulate on the tracks of the first sliding mechanism 23 and the second sliding mechanism 26, the swing of the sheet 1 may be hindered. In the present embodiment, the first sliding mechanism 23 includes the sweeper 34 or the brush 35 as the foreign matter removing member, and the second sliding mechanism 26 also includes the sweeper 34 or the brush 35 as the foreign matter removing member. Inhibition of the swing of the sheet 1 is suppressed.

  As shown in FIG. 3, the first sliding mechanism 23 of the present embodiment includes a plurality of first guide grooves 21 formed on the upper surface 11 a of the plate-like base member 11 and a lower surface 13 b of the plate-like intermediate member 13. A plurality of corresponding first guide grooves 22 are formed. Further, the second sliding mechanism 26 includes a plurality of second guide grooves 24 formed on the upper surface 13 a of the plate-like intermediate member 13 and a plurality of corresponding second guides formed on the lower surface 15 b of the plate-like sheet support member 15. And a groove 25. With such a configuration, the plate-like intermediate member 13 is assembled on the plate-like base member 11 via the rolling member 14, and the plate-like sheet support member is arranged on the plate-like intermediate member 13 via the rolling member 16. Since the seat support mechanism 10 can be assembled by assembling 15, the assembling work is easy. Further, high assembly accuracy is not required, and the number of parts can be reduced.

  On the other hand, the base-side holding member 27 that holds the plate-like base member 11 and the sheet-side holding member 30 that holds the plate-like sheet support member 15 are provided on the plate-like intermediate member 13, so that The plate-like intermediate member 13 is held so as not to be separated in the vertical direction, and the plate-like sheet support member 15 is held so as not to be separated in the vertical direction with respect to the plate-like intermediate member 13. As described above, the seat 1 is supported in a stable state because the seat 1 is allowed to swing in the lateral direction and the front-rear direction and is prevented from moving upward. Further, since both the base side holding member 27 and the sheet side holding member 30 are provided on the plate-like intermediate member 13, they are provided so as not to interfere with other members when the sheet 1 slides in the left-right direction or the front-rear direction. Is easy.

  As shown in FIGS. 1 and 2, the seat support mechanism 10 is provided between the floor 8 and the seat 1, so that the seat surface of the seat 1 tends to be high, and in order to keep the seat surface low. There is a risk of sacrificing the cushioning properties of the seating surface. In the present embodiment, the seat 1 is arranged so that the seated person's sciatus is positioned above the central portion of the plate-like sheet support member 15. Since 15a is recessed, it is suppressed that the cushioning property of a seat surface falls.

<< Second Embodiment >>
Next, a support structure for the seat 1 according to the second embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the element same or similar to 1st Embodiment, and the overlapping description is abbreviate | omitted. The same applies to other embodiments described below. In the support structure for the seat 1 of this embodiment, the configuration of the sheet support mechanism 40 is different from that of the first embodiment. This will be specifically described below.

  8A is a plan view, FIG. 8B is a rear view, and FIG. 8C is a side view of the sheet support mechanism 40 in the support structure for the seat 1 according to the second embodiment. As shown in FIG. 8, the seat support mechanism 40 includes a pair of front and rear first rails 41 that are attached to the floor 8 of the automobile V via a base bracket 42 and extend in the left-right direction in plan view. ing. As in the first embodiment, the seat support mechanism 40 may be attached to the floor 8 via the front and rear slide rails 9 (FIGS. 1 and 2). The first rail 41 has a downwardly curved shape, more specifically an arc shape. Each of the first rails 41 is supported by pillars 42a of base brackets 42 provided at three locations in the vicinity of the left and right end portions and the central portion in the left-right direction.

  A pair of left and right first sliders 43 are slidably coupled to each of the first rails 41 in the left-right direction. A first sliding mechanism 44 is formed by the first rail 41 and the pair of left and right first sliders 43. The front and rear first sliding mechanisms 44 each have a track defined by the first rail 41.

  The left and right first sliders 43 on the front side are fixed to a front edge member 46 extending in the left and right direction of the intermediate member 45 having a rectangular shape in plan view, and the left and right first sliders 43 on the rear side are fixed to the intermediate member 45. Are fixed to a trailing edge member 47 extending in the left-right direction. The intermediate member 45 is formed in a rectangular frame shape by a front edge member 46 and a rear edge member 47, and a left edge member 48 and a right edge member 49 which are coupled to these left and right ends and extend in the front-rear direction. . The front edge member 46, the rear edge member 47, the left edge member 48, and the right edge member 49 of the intermediate member 45 are each composed of a bar-like or pipe-like member that is convexly curved downward in the illustrated example. You may be comprised by the plate member extended in a direction.

  The intermediate member 45 includes three left and right columns 45a coupled to the front and rear ends of the left edge member 48 and the right edge member 49 and the middle portion in the front-rear direction. A pair of left and right second rails 51 extending in the direction and parallel to each other are supported. The second rail 51 has a downwardly convex curved shape, more specifically, an arc shape having a curvature similar to that of the first rail 41.

  A pair of front and rear second sliders 52 is coupled to each of the second rails 51 so as to be slidable in the front-rear direction. The left and right second sliders 52 are coupled to the left side member 6 (FIG. 2) of the seat 1, and the right and rear second sliders 52 are coupled to the right side member 6 of the seat 1. A second sliding mechanism 53 is formed by the second rail 51 and the pair of front and rear second sliders 52. The left and right second sliding mechanisms 53 each have a track defined by the second rail 51.

  FIG. 9 is a perspective view showing a part of the sliding mechanism shown in FIG. The configuration shown in FIG. 9 is similarly applied to the first sliding mechanism 44 and the second sliding mechanism 53 with the front and rear and the left and right reversed. Here, the first sliding mechanism 44 will be described as an example. In FIG. 7, reference numerals related to the second sliding mechanism 53 are shown in parentheses.

  As shown in FIG. 9, the first rail 41 is a recess for engaging a ball that is a rolling member 43 a at four locations on the upper and lower sides and the lower front and rear sides on the seat inner side (rear side or front side). The groove 41a has a substantially H-shaped cross-sectional shape. The first slider 43 is provided on the inner side of the seat with respect to the first rail 41, and has four annular passages formed therein so as to continuously supply the plurality of rolling members 43a to the concave groove 41a. The rail 41 is slidable in the left-right direction and is immovably coupled in the up-down direction and the front-rear direction. Since the first slider 43 is coupled to the first rail 41 via the plurality of rolling members 43a, the sliding resistance of both members is reduced.

  The second slider 52 is provided on the inner side (right side or left side) of the second rail 51 and is slidable in the front-rear direction with respect to the second rail 51 and immovably coupled in the up-down direction and the left-right direction. Yes. The second slider 52 is coupled to the side member 6 of the seat 1 on the inner side of the seat, which is the side opposite to the second rail 51.

  FIGS. 10A and 10B are rear views of the seat 1 according to the second embodiment when (A) is stationary and (B) receives an inertial force in the right direction. As shown in FIG. 10A, the seat 1 is arranged such that the seated person's sciatus is located above the central portion of the intermediate member 45. The track of the first sliding mechanism 44 defined by the first rail 41 has a center of curvature 44X at a height corresponding to the head of the seated person and higher than the center of gravity C of the seat 1 including the seated person. It has a curved shape. Therefore, as shown in FIG. 10B, the intermediate member 45 can slide (swing) in the left-right direction in the shape of an arc centered on the center of curvature 44X via the first sliding mechanism 44.

  The trajectory of the second sliding mechanism 53 defined by the second rail 51 is also at a height corresponding to the seated person's head and higher than the center of gravity C of the seat 1 including the seated person (the center of curvature in FIG. 1). A curved shape having a center of curvature 53X at substantially the same position as 26X (see FIG. 8C). Therefore, the second slider 52 can slide (swing) in the front-rear direction in an arc shape centered on the curvature center 53X via the second sliding mechanism 53 (see FIG. 1).

  Since the seat support mechanism 40 is configured in this manner, the seat 1 receives the inertial force in the right direction due to the left turn of the automobile V, for example, as shown in FIG. It slides to the right through the moving mechanism 44. On the contrary, when the seat 1 receives an inertial force in the left direction due to the right turn of the automobile V, the seat 1 slides in the left direction via the first sliding mechanism 44. Although not shown, the seat 1 is slidable in the front-rear direction via the second sliding mechanism 53. Therefore, when the vehicle 1 receives an inertial force in the rearward direction due to acceleration of the automobile V, for example, the second sliding mechanism 53 is moved. And slides backward. Conversely, when the seat 1 receives a forward inertial force due to the deceleration of the automobile V, it slides forward via the second sliding mechanism 53.

  Even if the seat support mechanism 40 is configured in this manner, the seating comfort is improved because the seated person is less likely to feel lateral acceleration and longitudinal acceleration by sliding the seat 1 as in the first embodiment. . Further, even if the seat 1 swings in the lateral direction or the front-rear direction, the position of the seated person's head is prevented from shifting, so that the uncomfortable feeling due to the swing of the seat 1 is reduced. On the other hand, since the intermediate member 45 can slide only in the left-right direction with respect to the first rail 41 and the second slider 52 can slide only in the front-rear direction with respect to the intermediate member 45, the seat 1 rotates in the yaw direction. There is nothing.

  FIG. 11 is an enlarged perspective view of a main part of the sliding mechanism according to the second embodiment. The configuration shown in FIG. 11 is similarly applied to the first sliding mechanism 44 and the second sliding mechanism 53 with the front and rear and the left and right reversed. Here, the first sliding mechanism 44 will be described as an example. In FIG. 7, reference numerals related to the second sliding mechanism 53 are shown in parentheses.

  As shown in FIG. 11A, resin sweepers 34 having a shape corresponding to the first rail 41 and entering the recesses of the first rail 41 are attached to the left and right end surfaces of the first slider 43. It has been. The sweeper 34 prevents foreign matters such as dust and sand from entering the inside of the first slider 43 from the end of the first slider 43 in a steady state. Further, when the first slider 43 slides in the left-right direction with respect to the first rail 41, the sweeper 34 functions as a foreign matter removing member that scrapes the foreign matter accumulated on the first rail 41 to the outside.

  Alternatively, a brush 35 as shown in FIG. 11B may be attached instead of the sweeper 34. The brush 35 is provided on the left and right end surfaces of the first slider 43 so as to enter the recess of the first rail 41. The brush 35 suppresses the entry of foreign matter such as dust and sand from the end portion of the first slider 43 into the interior of the first slider 43 during normal operation. Further, when the first slider 43 slides in the left-right direction with respect to the first rail 41, the brush 35 functions as a foreign matter removing member that scrapes the foreign matter accumulated on the first rail 41 to the outside.

  Also in the present embodiment, since the first sliding mechanism 44 includes the sweeper 34 or the brush 35 as a foreign matter removing member, and the second sliding mechanism 53 also includes the sweeper 34 or the brush 35 as a foreign matter removing member, the accumulation of foreign matters. This prevents the swing of the sheet 1 from being hindered.

  On the other hand, in the present embodiment, as shown in FIG. 8, the first sliding mechanism 44 is formed on the pair of first rails 41 supported in parallel to the base bracket 42 and the intermediate member 45. And at least one pair of first sliders 43 slidably coupled to the pair of first rails 41. The second sliding mechanism 53 includes at least one pair of second rails 51 formed in parallel to the intermediate member 45 and a sheet support member slidably coupled to the pair of second rails 51. A pair of second sliders 52 is included. As a result, the configurations of the first sliding mechanism 44 and the second sliding mechanism 53 are simplified, and the weight of the sheet support mechanism 40 is kept relatively small.

  Further, as shown in FIG. 9, the first slider 43 is coupled to the first rail 41 so as not to be separated upward, and the second slider 52 cannot be separated from the second rail 51 upward. Therefore, the intermediate member 45 is held so as not to be vertically separated from the first rail 41, and the sheet 1 supported by the second slider 52 cannot be separated from the intermediate member 45 in the vertical direction. Retained. As described above, the seat 1 is supported in a stable state because the seat 1 is allowed to swing in the lateral direction and the front-rear direction and the upward movement of the seat 1 is prevented.

  As shown in FIG. 10, the seat support mechanism 40 is provided between the floor 8 and the seat 1, so that the seating surface of the seat 1 tends to be high, and in order to keep the seating surface low, There is a possibility that cushioning may be sacrificed. In the present embodiment, as described with reference to FIGS. 8 and 10, the intermediate member 45 includes the front edge member 46 and the rear edge member 47 along the left-right direction, and the left edge member 48 and the right edge along the front-rear direction. The seat 1 is arranged in a rectangular frame shape having the member 49 so that the sciatic bone of the seated person is located above the central portion of the intermediate member 45. Thereby, since the intermediate member 45 which makes a rectangular frame shape does not exist in the part where a seated person's ischium is located, it is suppressed that the cushioning property of a seat surface falls.

<< Other Embodiments >>
Next, a support structure for the seat 1 according to another embodiment will be described with reference to FIGS. In addition, the support structure of the sheet | seat 1 demonstrated below is applicable to the support structure of 1st Embodiment, and the support structure of 2nd Embodiment.

  FIG. 12 is a rear view showing a coupling structure between the seat 1 and the floor 8 according to another embodiment. As shown in FIG. 12, at least one rubber member is provided between the seat 1 and the floor 8 of the automobile V as a biasing member that generates a biasing force that biases the seat 1 toward a predetermined neutral position. 61 is provided. In the illustrated example, two rubber members 61 are provided so as to connect the floor 8 and the seat 1. One end of the rubber member 61 may be coupled to the base brackets 12 and 42 instead of the floor 8, and instead of the seat 1, the seat bracket 17 (FIGS. 1 and 2) or the second slider 52 (FIG. 8). May be combined.

  Further, at least one damper 62 is provided between the seat 1 and the floor 8 as a damping member that attenuates the swing of the seat 1. In the illustrated example, two dampers 62 are provided so as to connect the floor 8 and the seat 1. The damper 62 has a cylinder and a piston rod slidably accommodated in the cylinder, and generates a damping force by the flow resistance between the fluid chambers of the fluid sealed in the cylinder by sliding of the piston rod. One damper 62 extends in the left-right direction when the seat 1 is at a predetermined neutral position, and attenuates the shaking of the seat 1 mainly in the left-right direction. The other damper 62 extends in the front-rear direction when the seat 1 is in a predetermined neutral position, and attenuates the vibration of the seat 1 mainly in the front-rear direction. One end of the damper 62 may be coupled to the base brackets 12 and 42 instead of the floor 8, and instead of the seat 1, the seat bracket 17 (FIGS. 1 and 2) or the second slider 52 (FIG. 8). May be combined. The damper 62 may be of other types such as a lead damper as long as it generates a damping force.

  Thus, the support structure of the seat 1 further includes the rubber member 61 that generates a biasing force that biases the seat 1 toward a predetermined neutral position, so that the seat 1 reacts sensitively to the force in the left-right direction or Oscillating in the front-rear direction is suppressed. Further, it is possible to prevent the seat 1 from returning from the swing position to the neutral position due to sliding friction.

  Further, since the support structure of the seat 1 further includes a damper 62 that attenuates the swing of the seat 1, the swing of the seat 1 biased toward the neutral position by the rubber member 61 converges at an early stage.

  FIG. 13 is a rear view showing a coupling structure between the seat 1 and the floor 8 according to another embodiment. In this embodiment, at least one spring member 63 is provided as a biasing member that generates a biasing force that biases the seat 1 toward a predetermined neutral position. In the illustrated example, two spring members 63 are provided so as to connect the floor 8 and the seat 1. One end of the spring member 63 may be coupled to the base brackets 12 and 42 instead of the floor 8, and instead of the seat 1, the seat bracket 17 (FIGS. 1 and 2) or the second slider 52 (FIG. 8). May be combined. Even if the urging member is configured in this way, the same effects as those of the embodiment of FIG. 12 can be obtained.

  FIG. 14 is a rear view showing the (A) fixed release state and (B) fixed state of the joint structure of the seat 1 and the floor 8 according to another embodiment. As shown in FIG. 14A, the seat 1 is provided with a lock member 66 for fixing the seat 1 to the floor 8. An engaging recess 67 that can receive the lower portion of the lock member 66 is formed at a position below the lock member 66 on the floor 8. The lock member 66 is provided so as to be slidable in the vertical direction, and the lower portion enters the engagement recess 67 to fix the seat 1 to the floor 8 and a fixing position shown in FIG. It is configured to be able to take the release position shown in FIG. 14A, which is above the fixing position and releases the lower part from the engaging recess 67 to release the fixing of the seat 1 to the floor 8. ing.

  A control device 68 for controlling the operation of the lock member 66 is provided at an appropriate position of the seat 1 or the automobile V. The lock member 66 slides to the fixed position or the release position by being controlled by the control device 68. The engaging recess 67 is provided with at least an upper portion of a tapered portion 67a that expands upward. Thereby, even if the seat 1 is slightly deviated from the predetermined neutral position to the front and rear and to the left and right due to the swing, the lock member 66 can easily enter the engagement recess 67 when moving from the release position to the fixed position.

  For example, the control device 68 fixes and releases the seat 1 to and from the floor 8 based on manual input by an occupant. The occupant selects whether the seat 1 is supported, i.e., whether it is swingably supported with respect to the vehicle body or whether it is fixedly supported with respect to the vehicle body, depending on the mood and situation at the time of riding. it can. Alternatively, when the vehicle V performs automatic driving, the fixing and releasing of the seat 1 provided as the driver's seat to the floor 8 is controlled based on a control signal corresponding to a switching state between automatic driving and manual driving. The device 68 may be configured to switch.

  As described above, in the present embodiment, the lock structure 66 that can take the fixing position in which the support structure of the seat 1 fixes the seat 1 to the floor 8 and the release position in which the seat 1 is released from the floor 8, and the lock And a control device 68 for driving and controlling the member 66. Thereby, based on the manual input by a passenger | crew, or based on the control signal according to the switching state etc. of the automatic driving | operation of the motor vehicle V and manual driving | operation etc., the control apparatus 68 performs the fixation to the floor 8 and fixation release. Can do.

  FIG. 15 is a perspective view illustrating a schematic configuration of a seat 1 according to another embodiment. As shown in FIG. 15, in addition to the seat cushion 2, the seat back 3, and the headrest 4, the seat 1 has an ottoman 71 (leg rest) connected to the front portion of the seat cushion 2 and side portions of the seat cushion 2. And a linked table 72. Since the ottoman 71 and the table 72 are coupled to the seat cushion 2, the ottoman 71 and the table 72 swing together with the seat cushion 2 when the seat 1 swings in the front-rear direction or the left-right direction.

  The ottoman 71 is attached to the seat cushion 2 so as to be rotatable about a rotation axis in the left-right direction. As shown in the figure, the ottoman 71 rotates between a deployed position that extends forward or obliquely downward from the front edge of the seat cushion 2 and a storage position that is folded below the front edge of the seat cushion 2. The rotation angle is adjusted by an operation member (not shown). When the ottoman 71 is in the deployed position, the seated person's legs are supported by the ottoman 71 and do not contact the floor 8.

  As described above, in this embodiment, since the seat 1 includes the ottoman 71 connected to the front portion of the seat cushion 2, the seated person's legs can be separated from the floor 8, and when the seat 1 swings, The sense of incongruity that the seated person learns is eliminated by twisting or dragging the legs.

  In the present embodiment, since the seat 1 includes the table 72 connected to the seat cushion 2, the table 72 and personal belongings (including drinks and food) placed on the table 72 by the seat 72 swing with the seat 1. To do. Thereby, when the seat 1 swings, the sense of incongruity that the seated person learns due to the belongings moving away from or approaching the seated person is eliminated. Further, it is possible to prevent a drink or the like from spilling or a cup from falling due to inertial force.

  FIG. 16 is a perspective view showing a schematic configuration of a seat 1 according to another embodiment. As shown in FIG. 16, the seat 1 is connected to the footrest 81 connected to the front portion of the seat cushion 2 and the side portion of the seat cushion 2 in addition to the seat cushion 2, the seatback 3, and the headrest 4. And a support base 82. Since the footrest 81 and the support 82 are coupled to the seat cushion 2, when the seat 1 swings in the front-rear direction or the left-right direction, it swings together with the seat cushion 2.

  The footrest 81 is provided with an accelerator pedal 84 for accelerating the automobile V and a brake pedal 85 for decelerating the automobile V. The support base 82 is provided with a steering wheel 86 for steering the automobile V.

  As described above, in the present embodiment, the accelerator pedal 84, the brake pedal 85, and the steering are used as driving operators that accept at least one operation of the seat 1 that is a driving operator for accelerating, decelerating, and steering the vehicle V. Since the wheel 86 is provided, when the seat 1 swings, the discomfort felt by the seated person is eliminated by changing the distance and angle to the driving operation elements.

  In addition, it is not necessary that all of these driving operators are provided on the seat 1. For example, instead of the accelerator pedal 84 and the brake pedal 85, a driving operator such as a pedal or an operating arm for accelerating and decelerating the automobile V may be provided. Further, instead of the steering wheel 86, or instead of the accelerator pedal 84, the brake pedal 85, and the steering wheel 86, a driving operator such as an operating arm for performing steering or acceleration / deceleration may be provided.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, in the above-described embodiment, the first sliding mechanisms 23 and 44 have a track extending in the left-right direction, and the second sliding mechanisms 26 and 53 have a track extending in the front-rear direction. The mechanisms 23 and 44 may have a track extending in the front-rear direction, and the second sliding mechanisms 26 and 53 may have a track extending in the left-right direction. Further, the first sliding mechanism 23, 44 and the second sliding mechanism 26, 53 do not have to be orthogonal to each other, and as long as they intersect, each has a track extending obliquely with respect to the front-rear direction and the left-right direction. You may do it. In the second embodiment, the intermediate member 45 integrally includes the first slider 43 and the second rail 51, but the intermediate member 45 integrally includes the first rail 41 instead of the first slider 43. Alternatively, the second slider 52 may be integrally provided instead of the second rail 51. In addition, the specific configuration, arrangement, quantity, angle, and the like of each member and part can be changed as appropriate without departing from the spirit of the present invention. On the other hand, not all the constituent elements shown in the above embodiment are necessarily essential, and can be appropriately selected.

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 4 Headrest 5 Reclining mechanism 6 Side member 7 Cross member 8 Floor 9 Front and rear slide rail 10 Seat support mechanism 11 Plate-shaped base member 11a Upper surface 11b Lower surface 12 Base bracket 13 Plate-shaped intermediate member 13a Upper surface 13b Lower surface DESCRIPTION OF SYMBOLS 14 Rolling member 15 Plate-shaped sheet | seat support member 15a Upper surface 15b Lower surface 16 Rolling member 21 1st guide groove 22 Corresponding 1st guide groove 23 1st sliding mechanism 23X Curvature center 24 2nd guide groove 25 Corresponding 2nd guide groove 26 Second sliding mechanism 26X Center of curvature 27 Base side holding member 30 Sheet side holding member 34 Sweeper (foreign matter removing member)
35 Brush (Foreign Substance Removal Member)
40 seat support mechanism 41 first rail 42 base bracket 43 first slider 44 first sliding mechanism 44X center of curvature 45 intermediate member 46 front edge member 47 rear edge member 48 left edge member 49 right edge member 51 second rail 52 second Slider 53 Second sliding mechanism 53X Center of curvature 61 Rubber member (biasing member)
62 Damper (damping member)
63 Spring member (biasing member)
66 Locking member 68 Control device 71 Ottoman (leg mounting)
72 Table 81 Foot rest (leg rest)
82 Support base 84 Accelerator pedal (operator)
85 Brake pedal (driver)
86 Steering wheel (driver)
C Center of gravity V Car

Claims (14)

A vehicle seat support structure,
A base member attached to the floor of the vehicle;
An intermediate member supported by the base member so as to be slidable in the first direction in plan view via the first sliding mechanism;
A seat support member supported by the intermediate member so as to be slidable in a second direction intersecting the first direction in a plan view via a second sliding mechanism, and supporting the vehicle seat;
The first sliding mechanism has a track having a curved shape having a center of curvature at a position higher than the center of gravity of the vehicle seat including a seated person;
The vehicle seat support structure, wherein the second sliding mechanism has a curved track having a center of curvature at a position higher than the center of gravity of the vehicle seat including a seated person.   2. The vehicle according to claim 1, wherein the center of curvature of the track of the first sliding mechanism and the center of curvature of the track of the second sliding mechanism are at a height corresponding to the head of the seated person. Sheet support structure. The base member includes a plate-like base member having an upper surface recessed in a spherical shape,
The intermediate member includes a plate-shaped intermediate member having a spherical surface convex downward,
The sheet support member includes a plate-like sheet support member having a lower surface bulged into a spherical shape,
The first sliding mechanism is formed on a plurality of first guide grooves extending in the first direction formed on an upper surface of the plate-like base member, and on a lower surface of the plate-like intermediate member, and the first guide A plurality of corresponding first guide grooves for receiving a plurality of rolling members in cooperation with the grooves;
The second sliding mechanism is formed on the lower surface of the plate-shaped sheet support member, and a plurality of second guide grooves extending in the second direction formed on the upper surface of the plate-shaped intermediate member. The vehicle seat support structure according to claim 1, further comprising a plurality of corresponding second guide grooves that receive the plurality of rolling members in cooperation with the guide grooves. A base-side holding member that is provided at both edges along the first direction of the plate-like intermediate member and holds the plate-like base members slidable in the first direction and not vertically separated;
A sheet-side holding member that is provided at both edges of the plate-like intermediate member along the second direction and holds the plate-like sheet support members slidable with respect to each other in the second direction and cannot be separated in the vertical direction; The vehicle seat support structure according to claim 3, further comprising: The plate-like sheet support member has an upper surface recessed in a spherical shape;
5. The vehicle seat support according to claim 3, wherein the vehicle seat is disposed so that a seated person's sciatus is located above a central portion of the plate-like seat support member. Construction. The first sliding mechanism is formed on one of the base member and the intermediate member, and is formed on the other of the base member and the intermediate member. And at least one pair of first sliders slidably coupled to the pair of first rails in the first direction;
The second sliding mechanism is formed on the other of the intermediate member and the sheet support member and a pair of downwardly projecting second rails formed in parallel to one of the intermediate member and the sheet support member. The vehicle seat according to claim 1, further comprising at least one pair of second sliders slidably coupled to the pair of second rails in the second direction. Support structure. At least one pair of the first sliders is non-separable upwardly coupled to the pair of first rails;
The vehicle seat support structure according to claim 6, wherein at least one pair of the second sliders are coupled to the pair of second rails so as not to be separated upward. The intermediate member has a rectangular frame shape having both edges along the first direction and both edges along the second direction,
The vehicle seat support structure according to claim 6 or 7, wherein the vehicle seat is arranged so that a seated person's sciatus is positioned above a central portion of the intermediate member. The first sliding mechanism includes a first foreign matter removing member for removing foreign matter accumulated on the track of the first sliding mechanism,
The said 2nd sliding mechanism is equipped with the 2nd foreign material removal member for removing the foreign material deposited on the track | orbit of the said 2nd sliding mechanism, The any one of Claims 1-8 characterized by the above-mentioned. Support structure for a vehicle seat.   The vehicle seat includes a seat cushion supported by the seat support member, a seat back coupled to a rear portion of the seat cushion, and a leg rest coupled to a front portion of the seat cushion. The vehicle seat support structure according to any one of claims 1 to 9.   The vehicle seat support structure according to any one of claims 1 to 10, wherein the vehicle seat includes a driving operator that receives at least one of acceleration, deceleration, and steering operations of the vehicle. .   The urging member that is provided between the vehicle seat and the floor and generates an urging force that urges the vehicle seat toward a predetermined neutral position is further provided. Item 12. The vehicle seat support structure according to any one of Items 11.   The vehicle seat support structure according to claim 12, further comprising an attenuation member provided between the vehicle seat and the floor and configured to attenuate vibration of the vehicle seat. A locking member capable of taking a fixing position for fixing the vehicle seat to the floor and a release position for releasing the fixing of the vehicle seat to the floor;
The vehicle seat support structure according to any one of claims 1 to 13, further comprising a control device that drives and controls the lock member.

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