Vehicle seating system

Abstract

To change a seat body to a desired posture while more stably sliding and moving the seat body.SOLUTION: A support section 12 is provided with a pair of guide sections 31, 32 which guides a seat body 13 during sliding movement. The support section has a reference portion 40 where the pair of guide sections 31, 32 is arranged with a prescribed seat vertical direction distance and tilt portions 41, 42 where the pair of guide sections 31, 32 is arranged with a seat vertical direction distance different from that in the reference portion 40. A vehicle seat device further includes a link section 51 tilting interlocking with the seat body 13. The link section 51 extending in a seat vertical direction is made a state of being extended between the pair of guide sections 31, 32 and is movably mounted along both of the pair of guide sections 31, 32.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vehicle seat device configured to slide a seat body supported by a support portion with respect to the support portion to incline the seat body from a basic posture.

Background Art

[0002] A vehicle seat device related to this is disclosed in Patent Document 1. As shown in FIG. 11, this vehicle seat device 10X has a base member 70 installed on the vehicle floor side and a rotating member 71 (corresponding to a support portion) disposed on the base member 70. A rotating device (not shown) is provided between the base member 70 and the rotating member 71. Further, a slide member 72 fixed to the seat body 73 is disposed on the rotating member 71. The slide member 72 is configured to be able to slide back and forth along a guide rail 74 provided on the rotating member 71 side. In the above-described configuration, by rotating the rotating member 71 with respect to the base member 70, the slide member 72 on the rotating member 71 can be rotationally moved from a general position facing the vehicle forward to an entry / exit position facing the door opening side. Further, the slide member 72 is slid forward on the seat with respect to the rotating member 71. As a result, the seat body 73 fixed to the slide member 72 can be moved forward on the seat, that is, toward the door opening side at the entry / exit position.

[0003] Referring to the state shown by the dashed line in Figure 11, the seat body 73, positioned in the normal forward-facing position of the vehicle, is in a downward-sloping position with its rear end tilted downwards. The vehicle seat device 10X is configured to tilt the seat body 73, which is in a downward-sloping position, to a horizontal position (shown by the solid line in the figure) by sliding it toward the door opening. Specifically, the sliding member 72 is provided with a guide plate 75 that extends in the front-rear direction of the seat. This guide plate 75 is gradually bent toward the underside of the seat as it moves toward the front of the seat. In addition, the front end of the rotating member 71 is provided with a guide member 76 that slides along the upper and lower surfaces of the guide plate 75. In the above configuration, as the sliding member 72 slides toward the front of the seat, the front end of the sliding member 72 rotates toward the underside of the seat along the guide plate 75. As a result, the seat body 73, which is fixed to the sliding member 72, is gradually displaced to a horizontal position as it slides toward the door opening. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2016-88438 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] In the vehicle seat device 10X shown in Figure 11, it is desirable that the seat body 73 be able to slide while suppressing unintended movements (such as vertical rattling). However, in the above configuration, the guide rail 74 and the guide plate 75 are provided on separate members (rotating member 71 and sliding member 72) and are spaced apart in the vertical direction of the seat. As a result, when the sliding member 72 is slid relative to the rotating member 71, there is a risk that the seat body 73 may rattle due to the distance between the two guides 74 and 75. The present invention was devised in view of the above points, and the problem that the present invention aims to solve is to enable the seat body to be changed to a desired posture while sliding more stably. [Means for solving the problem]

[0006] As a means to solve the above problems, the vehicle seat device of the first invention slides the seat body, which is supported by a support, relative to the support to tilt it from its basic position. In this type of configuration, it is desirable to be able to change the seat body to a desired position while sliding it more stably. Therefore, the support of the present invention is provided with a guide for the seat body during sliding. First guide section and second guide section In addition, First guide section and second guide section A reference area is positioned at a predetermined distance in the vertical direction of the sheet, First guide section and second guide section A tilt section is provided, which is positioned at a different vertical distance from the reference section. Furthermore, a link section is provided that tilts in conjunction with the seat body, and a link section extends in the vertical direction of the seat. This is achieved by connecting a slider portion that slides along the first guide portion and a sliding portion that slides along the second guide portion, thereby connecting the first guide portion and the second guide portion It is mounted so as to be movable along both sides.

[0007] In this invention, a link portion extending in the vertical direction of the seat moves along each guide portion while being spanned between the two guide portions, allowing the seat body, which is linked to this link portion, to slide more stably. In the support portion, the vertical distance of the seat between the two guide portions differs between the reference portion and the tilt portion. As a result, by sliding the seat body between the two portions, the link portion tilts at a specific portion (desired position), and the seat body, which is linked to this link portion, can be tilted from its basic position.

[0008] The vehicle seat device of the second invention is the vehicle seat device of the first invention, in which the tilt portion is Either the first guide section or the second guide section However, it extends in a direction that intersects with respect to the other, which is different from one, so as to change the distance in the vertical direction of the seat. In the tilt portion of the present invention, First guide section and second guide section By appropriately setting one or both directions and changing the distance between the two guide sections, the seat body, which is linked to the link section, can be tilted to a desired position.

[0009] The vehicle seat device of the third invention is the vehicle seat device of the second invention, in which the tilt portion is First guide section and second guide section One of them extends along the sliding direction of the seat body, and the other is different First guide section and second guide section Either the other extends in a direction that intersects it. In the tilt portion of the present invention, First guide section and second guide section Since one of the two guides extends along the direction of sliding, the sheet body guided by this one guide can be slid more stably. First guide section and second guide section By appropriately setting the other direction, the distance between the two guide sections can be changed.

[0010] The fourth vehicle seat device is a vehicle seat device of any of the first to third inventions, and is equipped with a rotating device that rotates the seat body between a general position facing forward and an entry / exit position facing the door opening. And, with reference to the general position, at the tilt portion set on the front end side of the seat, First guide section and second guide sectionThe vertical distance of the seat gradually increases towards the front of the seat. In this invention, the distance between the guide parts on the front of the seat is gradually increased. As a result, the seat body tilts significantly towards the front of the seat at the support part, i.e., towards the door opening at the boarding / alighting position, which contributes to ensuring ease of boarding and alighting. [Effects of the Invention]

[0011] According to the first invention of the present invention, the seat body can be changed to a desired posture while sliding it more stably. According to the second invention, the seat body can be changed to a desired posture more reliably. According to the third invention, the seat body can be changed to a desired posture more reliably while sliding it even more stably. According to the fourth invention, the seat body can be changed to a desired posture at an appropriate position while sliding it more stably in order to ensure ease of getting on and off. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view of a vehicle showing a vehicle seating system. [Figure 2] This is a schematic side view of a vehicle seat device in a standard position. [Figure 3] This is a schematic perspective side view of a vehicle seat device showing the guide section and tilt mechanism. [Figure 4] This is a schematic perspective side view of a vehicle seating device at the boarding / alighting position. [Figure 5] This is a schematic cross-sectional view of the rotating device. [Figure 6] This is a schematic perspective view of a vehicle seat device showing the guide section and tilt mechanism. [Figure 7] This is a schematic top view of a vehicle seat system. [Figure 8] This is a schematic, enlarged perspective view showing the link section of a vehicle seat device. [Figure 9] This is a schematic, enlarged, perspective side view of a vehicle seat device showing the sliding parts. [Figure 10]It is a schematic perspective side view showing the seat body during sliding movement. [Figure 11] It is a schematic perspective side view of a conventional vehicle seat device.

Embodiments for Carrying out the Invention

[0013] Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 10. For the sake of convenience, in each figure, arrow lines indicating the front-rear direction, left-right direction, and up-down direction are appropriately illustrated based on the vehicle seat device in the general position. Also, in each figure, the main configuration of the vehicle seat device is illustrated, and other configurations are illustrated in a simplified or omitted manner. Further, in FIG. 3 (the figure in the general position), the support portion is illustrated obliquely in order to facilitate comparison with FIG. 4 (the figure in the boarding / alighting position). And in FIGS. 3, 4, and 10, for the sake of convenience, the vertical distance (the length dimension of the connecting portion) between the seat body and the support portion is enlarged and illustrated.

[0014] The vehicle seat device 10 shown in FIG. 1 is a seat device mounted on the vehicle 2 and is installed on the vehicle floor 3 on the front left side of the vehicle compartment 2R. Also, in the vehicle 2, a windshield 4 is provided on the front side of the vehicle seat device 10. Further, a door opening 5 is provided on the left side of the vehicle seat device 10, and this door opening 5 is configured to be opened and closed by a door not shown. And as shown in FIG. 2, the vehicle seat device 10 includes a base portion 11 disposed on the vehicle floor 3 side and a support portion 12 that supports the seat body 13 at an upper position of this base portion 11.

[0015] Here, the base 11 shown in Figure 2 is installed on the vehicle floor 3 side via left and right front-rear sliding mechanisms 6 (for convenience, only the left front-rear sliding mechanism is shown in Figure 2). This front-rear sliding mechanism 6 includes a lower rail 7 that extends in the front-rear direction of the vehicle on the vehicle floor 3, and an upper rail 8 that slides front-rear along the lower rail 7. By positioning the base 11 on the upper rail 8, the base 11 can move in the front-rear direction of the vehicle along the lower rail 7. The upper rail 8 is configured to be slide-locked in multiple stages relative to the lower rail 7 by a multi-stage locking mechanism (not shown). The base 11 is fixed to the left and right front-rear sliding mechanisms 6 so as not to follow the rotational movement of the seat body 13, which will be described later.

[0016] Furthermore, the support portion 12 shown in Figure 2 is positioned above the base portion 11 and supports the seat body 13. The seat body 13 comprises a seat cushion 14, which serves as the seat, and a seat back 15, which serves as the backrest. The seat cushion 14 is formed as a long rectangle in a side view and is positioned on the support portion 12. The seat back 15 is positioned at the rear of the seat cushion 14, rising towards the top of the vehicle. A recliner 16 is provided at the connection point between the seat cushion 14 and the seat back 15 to adjust the tilt angle (reclining angle) of the seat back 15. The seat body 13, positioned directly above the support portion 12, is positioned so that its seat cushion 14 is aligned with the upper surface of the support portion 12, and this position of the seat body 13 corresponds to the basic position (see Figure 3).

[0017] Furthermore, a rotating device 20 (details to be described later) for rotating the seat body 13 is provided between the base 11 and the support 12 as shown in Figure 2. The vehicle seat device 10 is configured so that the seat body 13, supported by the support 12, can be rotated by the rotating device 20 between the general position facing forward in the vehicle, as shown by the dashed line in Figure 1, and the boarding / alighting position facing the door opening 5, as shown by the solid line in Figure 1 (see the direction indicated by reference numeral 12A in Figure 1).

[0018] Referring to Figures 3 and 4, the support portion 12 and the seat body 13 are connected via a pair of guide portions 31 and 32 and a tilt mechanism 50 (both described in detail later). In the vehicle seat device 10, as will be described later, the seat body 13 in the boarding / alighting position is slid towards the door opening 5 while being guided by the pair of guide portions 31 and 32. Furthermore, the tilt mechanism 50 displaces the slid seat body 13 into a forward-sloping tilt position with its front side tilted downwards. In this type of seat configuration, it is desirable to be able to stably slide the seat body 13 and suppress unintended movements of the seat body 13 (such as rattling). Therefore, in this embodiment, the pair of guide portions 31 and 32 (reference portion 40 and tilt portion 41 and 42), and the tilt mechanism 50, which will be described later, allow the seat body 13 to be slid more stably and changed to the desired position. The components of the vehicle seat device 10 will be described in detail below, in the following order: the rotating device 20, the pair of guide parts 31 and 32, the tilt mechanism 50, the reference part 40, and the tilt parts 41 and 42.

[0019] [Rotating device] First, the rotating device 20 shown in Figure 2 is a device that rotates the seat body 13, which is supported by the support portion 12, between a general position and an entry / exit position. As shown in Figure 5, this rotating device 20 comprises an inner ring 21 fixed on a base portion 11 and an outer ring 22 that is rotatably supported relative to the inner ring 21 (outer circumference side), with the support portion 12 fixed on this outer ring 22. The base portion 11 or the support portion 12 is also provided with a drive unit (not shown) that rotates the outer ring 22 relative to the inner ring 21. By rotating the seat body 13, which is supported by the support portion 12, around the axes of the inner ring 21 and the outer ring 22, it can be rotated approximately 90° relative to the base portion 11 when viewed from above (see the direction indicated by reference numeral 12A in Figure 1). Furthermore, in the rotating device 20, the axis of the inner ring 21 is mounted so as to the base 11 that it is tilted to the left (towards the door opening), and as the inner ring 21 and outer ring 22 rotate, the support part 12 gradually tilts forward. As a result, by rotating the support part 12 toward the boarding / alighting position, the front side of the support part 12 can be tilted so that it is lower (see Figure 4). The rotational movement of the support part 12 by the rotating device 20 can be locked by a rotation locking device (not shown).

[0020] [A pair of guide sections] Next, the support section 12 shown in Figure 3 is provided with a pair of guide sections (first guide section 31 and second guide section 32) that guide the sheet body 13 when it slides. The first guide section 31 and the second guide section 32 are provided on both sides (left and right) of the support section 12 in the sheet width direction, as shown in Figures 6 and 7 (for convenience, the reference numerals corresponding to each member on the right side are enclosed in parentheses in each figure). Since the left and right guide sections 31 and 32 have generally the same basic configuration, their basic configuration will be explained below using the guide sections 31 and 32 on the left side of the sheet as an example. The first guide section 31 extends linearly in the front-rear direction of the sheet, generally along the upper surface of the support section 12, so as to be in the direction of the sheet body 13's slide movement.

[0021] Furthermore, the second guide portion 32 shown in Figures 6 and 7 is positioned on the outer side (left side) in the vehicle width direction of the first guide portion 31 and extends in approximately the same direction as the first guide portion 31. The second guide portion 32 is bent in a parabolic shape toward the upper side of the seat, as shown in Figure 3, thereby forming multiple bent portions (first bent portion 321, second bent portion 322). The first bent portion 321 extends from the rear end of the second guide portion 32 toward the front side of the seat and is gradually bent toward the upper side of the seat as it approaches the front side of the seat. The second bent portion 322 is continuous with the front side of the first bent portion 321 and extends toward the front end of the seat of the support portion 12. In this second bent portion 322, the second guide portion 32 is gradually bent toward the lower side of the seat as it approaches the front end of the seat, and the degree of bending in this second bent portion 322 is steeper than that of the first bent portion 321.

[0022] [Tilt mechanism] Next, the tilt mechanism 50 shown in Figures 3 and 4 is a mechanism that displaces the seat body 13 between the basic position and a tilted position that is inclined from the basic position. This tilt mechanism 50 can be composed of a strip-shaped link portion 51 extending in the vertical direction of the seat, a slider portion 52, and a connecting portion 53 that connects the link portion 51 and the seat body 13. Here, the connecting portion 53 shown in Figure 3 is formed to extend in the vertical direction of the seat and connects the link portion 51 and the seat body 13. That is, the upper side of the connecting portion 53 is fixed to the rear of the cushion frame 14F that constitutes the side frame of the seat cushion 14 by fastening or welding. The lower side of the connecting portion 53 is fixed to the link portion 51 by fastening or welding. With the above configuration, the seat body 13 will move in conjunction with the inclination (tilting, etc.) of the link portion 51, which will be described later.

[0023] [Link section] Furthermore, the link portion 51 shown in Figure 3 is connected to the rear side of the cushion frame 14F, and is positioned on the rear end side of the support portion 12 when the seat body 13 in its basic position is in its normal position. The link portion 51 is positioned in a basic position that is gradually tilted towards the rear of the seat as it approaches its upper end 510, and is arranged to span between the two guide portions 31 and 32. Here, the link portion 51 only needs to span between the guide portions 31 and 32, and its vertical dimensions do not need to be excessively large. In other words, in the above configuration, the vertical dimensions of the link portion 51 can be reduced and the structure made more compact compared to when the support portion 12 and the seat body 13 are connected by a link member.

[0024] Furthermore, the upper end portion 510 of the link portion 51 shown in Figure 3 is axially connected to a slider portion 52 that slides along the first guide portion 31, thereby allowing it to move along the first guide portion 31. Here, as shown in Figures 6 and 7, the slider portion 52 is formed in a plate shape that extends in the sheet width direction (left and right), and spans between the left and right first guide portions 31. Referring to Figure 8, the slider portion 52 is provided with sliding legs 54a on its left and right positions so as to protrude downwards from the sheet, and the first guide portion 31 is slidably fitted into sliding grooves 540 provided on these sliding legs 54a. The slider portion 52 is also provided with receiving portions 54b on its left and right positions so as to protrude upwards from the sheet, and an upper shaft member 55 extending in the sheet width direction is fitted into a fitting recess 541 of the receiving portion 54b. The upper end portion 510 of the link portion 51 is pivotally supported on the end side of the upper shaft member 55 so as to be able to rotate up and down, allowing the upper end portion 510 of the link portion 51 to move along the first guide portion 31 together with the slider portion 52. The slider portion 52 can be configured to slide by operating a drive unit (not shown) provided on the support portion 12 side.

[0025] Furthermore, the lower end portion 511 of the link portion 51 shown in Figure 3 is provided with a pair of upper and lower sliding portions 56 and 57 that slide along the second guide portion 32. Referring to Figures 8 and 9, the second guide portion 32 is formed in a substantially inverted L-shape in cross-section and has a horizontal wall-like upper wall portion 32a and a vertical wall-like side wall portion 32b that is bent at a right angle from the right edge of the upper wall portion 32a. The pair of upper and lower sliding portions 56 and 57 are pivotally supported at the lower end portion 511 of the link portion 51. The upper sliding portion 56 is slidably positioned on the upper surface of the upper wall portion 32a of the second guide portion 32, and the lower sliding portion 57 is slidably positioned on the lower surface of the upper wall portion 32a. As the upper and lower sliding portions 56 and 57 slide along the second guide portion 32, the lower end portion 511 of the link portion 51, on which the sliding portions 56 and 57 are provided, can move along the second guide portion 32.

[0026] Thus, in the support section 12 shown in Figure 3, the link section 51 is configured to move along both guide sections 31 and 32, as described above. By extending the first guide section 31 linearly in the front-rear direction of the seat (sliding direction), the link section 51 and the seat body 13 can be moved stably. On the other hand, the second guide section 32 is bent in a direction that intersects with the first guide section 31, i.e., in both the front-rear and up-down directions of the seat, so that the vertical distance between it and the first guide section 31 can be changed at an appropriate position. As a result, the support section 12 can be configured with a reference section 40 where both guide sections 31 and 32 are positioned at a predetermined distance in the vertical direction of the seat, and a tilt section (41, 42) where both guide sections 31 and 32 are positioned at a different distance from the reference section 40.

[0027] [Reference part] Therefore, in the support section 12 shown in Figure 3, a reference section 40 is set on the rear end side of the support section 12 where the link section 51 is located, based on the case where the seat body 13 in the basic posture is in the general position. In the reference section 40, the first guide section 31 where the upper end 510 of the link section 51 is located and the second guide section 32 where the lower end 511 of the link section 51 is located are arranged with a predetermined vertical distance (100) between them.

[0028] [Tilt area] Furthermore, in the support section 12 shown in Figure 3, the second guide section 32 is bent into a curved shape, thereby forming multiple tilt sections (intermediate tilt section 41, front end tilt section 42). The intermediate tilt section 41 is formed to extend from the reference section 40 toward the front of the seat, with the general position as the reference point. In the intermediate tilt section 41, the second guide section 32 located at the first bent section 321 is bent toward the front and upper side of the seat. As a result, in the intermediate tilt section 41, the vertical distance between the two guide sections 31 and 32 relative to the reference section 40 gradually decreases as it moves toward the front of the seat. The front end tilt section 42 is formed on the front side of the intermediate tilt section 41, i.e., on the front end side of the support section 12. In the front end tilt section 42, the second guide section 32 located on the front side of the second bent section 322 is bent toward the front and lower side of the seat. As a result, at the front tilt section 42, the vertical distance between the two guide sections 31 and 32 relative to the reference section 40 gradually increases as it moves towards the front of the seat. At the front tilt section 42, the second guide section 32 is bent relatively sharply, so that the vertical distance (101) between the two guide sections 31 and 32 is at its maximum at the front of the seat.

[0029] [Position displacement of the seat body] Referring to Figures 1 and 2, in the vehicle seat device 10 in its normal position, the seat body 13 is positioned in a basic forward-facing position, facing the windshield 4. By rotating the seat body 13 from its normal position to the boarding / alighting position using the rotating device 20, the seat body 13 is directed toward the door opening 5. In this state, the seat body 13 is slid toward the front of the seat on the support part 12, i.e., toward the door opening 5, displacing it from its basic position to a forward-sloping tilt position (see Figure 4). In the above configuration, it is desirable to slide the seat body 13 more stably to suppress unintended movements (such as rattling).

[0030] Therefore, in the vehicle seat device 10 shown in Figure 3, the support portion 12 is provided with a reference portion 40 in which a pair of guide portions 31 and 32 are arranged at a predetermined vertical distance of the seat, and tilt portions 41 and 42 in which a pair of guide portions 31 and 32 are arranged at a different vertical distance of the seat than the reference portion 40. A link portion 51 that tilts in conjunction with the seat body 13 is positioned between the pair of guide portions 31 and 32 and is mounted so as to be movable along both of the pair of guide portions 31 and 32. In the above configuration, the link portion 51 moves along both of the guide portions 31 and 32. This allows the seat body 13, which is linked to the link portion 51, to slide stably regardless of the vertical distance between the two guide portions 31 and 32. Furthermore, by moving the link portion 51, which is linked to the seat body 13, between the reference portion 40 and each tilt portion 41 and 42, it becomes possible to tilt the seat body 13 in a desired direction at each tilt portion 41 and 42. Therefore, the behavior of the seat body 13 during sliding movement and the function of the link section 51 will be explained in more detail below.

[0031] [Behavior of the seat itself and function of the linkage] In the configuration described above, by sliding the seat body 13 in the basic position shown in Figure 3 toward the front of the seat, the link portion 51 moves from the reference portion 40 to the intermediate tilt portion 41. In this intermediate tilt portion 41, as described above, the second guide portion 32 is gently bent toward the front and upward of the seat, so that the vertical distance between the first guide portion 31 and the second guide portion 32 gradually decreases as it moves toward the front of the seat. Therefore, as shown in Figure 10, as the link portion 51 moves toward the front of the seat along the intermediate tilt portion 41, the lower end portion 511 of the link portion 51 gradually rises toward the upper side of the seat along the second guide portion 32. As a result, the link portion 51 tilts toward the rear of the seat, with its lower end portion 511 raised toward the upper side of the seat relative to its upper end portion 510. Furthermore, as the linked link portion 51 tilts toward the rear of the seat, the seat body 13 gradually displaces into a tilt position with its front portion raised toward the upper side. Furthermore, by raising the front of the seat body 13, even if the support part 12 at the entry / exit position tilts forward, the occupant can be stably seated on the seat body 13. In addition, with the above configuration, the occupant's legs, which are located in front of the seat cushion 14, are raised, making it less likely for the occupant's legs to interfere with the vehicle floor.

[0032] Next, referring to Figures 4 and 10, by further sliding the seat body 13, the link portion 51 moves between the intermediate tilt portion 41 and the front tilt portion 42. In the portion between these two tilt portions 41 and 42, as shown in Figure 4, the rear side of the second bent portion 322, which is bent towards the front and downward of the seat, is located. As a result, the link portion 51 gradually returns to its original basic position as its lower end portion 511 descends downward along the second guide portion 32, and the seat body 13, which is linked to the link portion 51, also returns to its basic position (see the state shown by the dotted line in Figure 3).

[0033] Next, as shown in Figure 4, the seat body 13 is slid towards the front end of the support part 12, causing the link part 51 to move along the front tilt part 42. In this front tilt part 42, as described above, the second guide part 32 is bent towards the front and downward of the seat, so the vertical distance between the first guide part 31 and the second guide part 32 gradually increases as it moves towards the front of the seat. As a result, as the link part 51 moves towards the front of the seat along the front tilt part 42, the lower end 511 of the link part 51 gradually descends towards the bottom of the seat along the second guide part 32. As a result, the link part 51 is tilted (raised) towards the front of the seat, with its lower end 511 being lowered relative to its upper end 510. In addition, as the linked link part 51 tilts towards the front of the seat, the seat body 13 is displaced into a tilted position with its front side tilted downward. The seat body 13 then assumes a forward-sloping tilt position at the front end of the support part 12, with its foremost part lowered. By swinging the seat body 13 out toward the door opening 5 in this forward-sloping tilt position, the occupant's legs can be brought closer to the ground when getting in and out, contributing to the assurance of excellent entry and exit performance. Once an occupant is seated, the seat body 13 returns to its original basic position (see Figure 3) by moving in the reverse direction of the movement described above.

[0034] As explained above, in this embodiment, the link portion 51 extending in the vertical direction of the seat moves along each of the guide portions 31 and 32 while being spanned between them. This allows the seat body 13, which is linked to the link portion 51, to slide more stably. In the support portion 12, the vertical distance of the seat between the two guide portions 31 and 32 differs between the reference portion 40 and the tilt portions 41 and 42. As a result, by sliding the seat body 13 between these two portions, the link portion 51 tilts at a specific tilt portion 41 or 42 (desired position), allowing the seat body 13, which is linked to this link portion 51, to be tilted from its basic position. Therefore, according to this embodiment, the seat body 13 can be changed to a desired position while sliding more stably. Furthermore, in the above configuration, the link portion 51 can be made more compact compared to when the support portion 12 and the seat body 13 are connected by a link member, making it easier to secure space in the vertical direction of the vehicle.

[0035] Furthermore, in the tilt sections 41 and 42 of this embodiment, by appropriately setting the direction of one of the pair of guide sections 31 and 32 to change the distance between the two guide sections 31 and 32, the seat body 13, which is linked to the link section 51, can be tilted to a desired position. In particular, in the tilt sections 41 and 42 of this embodiment, since the first guide section 31 (either one of the pair of guide sections) extends along the sliding direction, the seat body 13 guided by this first guide section 31 can be slid more stably. By appropriately setting the direction of the second guide section 32 (the other of the pair of guide sections), the distance between the two guide sections 31 and 32 can be changed. In this embodiment, the distance between the guide sections 31 and 32 on the front end side of the seat is gradually increased. As a result, the seat body 13 tilts significantly towards the front end side of the support section 12, that is, towards the door opening 5 side at the boarding / alighting position, which contributes to ensuring ease of boarding and alighting.

[0036] The vehicle seat device of this embodiment is not limited to the embodiment described above, and can take various other forms. In this embodiment, the configurations of the link section, each guide section, reference section, and tilt section have been illustrated, but this is not intended to limit the configuration of each section. For example, the link section may have a configuration in which it slides directly between the first guide section and the second guide section (for example, equipped with a sliding section), or it may have a configuration in which it slides indirectly between both guide sections (for example, via a slider section). Furthermore, the posture (basic posture) of the link section and the seat body at the reference section can be appropriately set according to the configuration of the vehicle seat device. For example, the basic posture of the seat body can be a posture in which an occupant can be seated, and examples of such postures include a posture in which the rear or front of the seat is tilted slightly downward, as well as a nearly horizontal posture.

[0037] Furthermore, the reference section and the tilt section can be set at appropriate positions on the support section. The support section can be provided with multiple or a single tilt section; for example, only one of the front end tilt section and the intermediate tilt section shown in Figure 3 can be provided. The tilt section can also be formed by changing the direction of at least one of the first guide section and the second guide section. That is, in the tilt section, the first guide section can be extended in a direction that intersects the second guide section (for example, the second guide section that extends along the sliding movement direction). The first guide section and the second guide section can also be extended in directions that move away from each other (intersecting directions) in the vertical direction of the sheet. At least one of the two guide sections may be bent continuously (inclined) in the front-rear and vertical directions of the sheet, bent in stages (at multiple inclination angles), or bent in a stepped manner (staircase-like).

[0038] Furthermore, while this embodiment illustrates the configuration of a vehicle seat device, it is not intended to limit the configuration of vehicle seat devices. For example, as a rotating device mechanism, a mechanism that does not tilt the support part or a mechanism that rotates the base and seat part via a link can be employed. Also, although a vehicle seat device equipped with a rotating device has been described, the configuration of this embodiment can be applied to vehicle seat devices with other configurations. For example, in a vehicle seat device, the seat back may be tilted forward relative to the seat cushion, moved to an appropriate position in the vehicle (for example, slid to the end in the vehicle width direction), and then the seat body may be raised. In such cases as well, the configuration of this embodiment can be applied to tilt the seat body so that it is raised to an appropriate position. The vehicle seat device can be installed at an appropriate position in the vehicle interior and may have a single-person or multi-person seat body. [Explanation of symbols]

[0039] 2 vehicles 2R cabin 3 Vehicle Floor 4. Windshield 5 Door opening 6. Front and rear sliding mechanism 7 Lower Rail 8 Upper Rail 10. Vehicle seating devices 11 Base 12 Support part 13 Seat Body 14 Seat Cushions 14F Cushion Frame 15 Seatback 16 Reclining Seats 20 Rotating device 21 Inner circle 22 Outer ring 31 First guide section (one of the pair of guide sections of the present invention) 32 Second guide section (the other of the pair of guide sections of the present invention) 32a Upper wall part 32b Side wall part 321 First bending point 322 Second bending point 40 Reference site 41 Intermediate tilt section 42 Front end tilt section 50 Tilt mechanism 51 Link section 510 Upper end (of the link section) 511 Lower end (of the link section) 52 Slider section 53 Connecting part 54a Sliding leg 540 Sliding groove 54b Receiving part 541 Recessed part 55 Upper shaft material 56 Upper sliding part 57 Lower sliding part 10X (Conventional) Vehicle Seat System 70 Base member 71 Rotating member 72 Sliding member 73 Seat Body 74 Guide Rails 75 Guide Plate 76 Guide member

Claims

1. In a vehicle seat device in which the seat body supported by a support is slid relative to the support to tilt it from its basic position, The support portion is provided with a first guide portion and a second guide portion for guiding the seat body during sliding movement, and is provided with a reference portion where the first guide portion and the second guide portion are arranged at a predetermined distance in the vertical direction of the seat, and a tilt portion where the first guide portion and the second guide portion are arranged at a different distance in the vertical direction of the seat from the reference portion. A vehicle seat device is provided with a link portion that tilts in conjunction with the seat body, and the link portion extending in the vertical direction of the seat is connected to a slider portion that slides along the first guide portion and a sliding portion that slides along the second guide portion, so that it is mounted to be movable along both the first guide portion and the second guide portion.

2. The vehicle seat device according to claim 1, wherein in the tilt portion, either the first guide portion or the second guide portion extends in a direction that intersects with respect to the other, which is different from the one, so as to change the distance in the vertical direction of the seat.

3. The vehicle seat device according to claim 2, wherein in the tilt portion, either the first guide portion or the second guide portion extends along the sliding direction of the seat body, and the other of the first guide portion or the second guide portion, which is different from the one mentioned above, extends in the intersecting direction.

4. The aforementioned seat body is equipped with a rotating device that rotates it between a general position facing forward in the vehicle and an entry / exit position facing the door opening, A vehicle seat device according to any one of claims 1 to 3, wherein, with reference to the general position, in the tilt portion set on the front end side of the seat, the vertical distance between the first guide portion and the second guide portion of the seat gradually increases towards the front end of the seat.

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