JP2007296866A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve layout property of a tilt mechanism and a lift mechanism, and to reduce cost by simplification of a structure and sharing of a member, in a seat device for a vehicle. <P>SOLUTION: The seat device is provided with the tilt mechanism and the lift mechanism, and is provided with a first link shaft and a second link shaft relatively rotatably fitted/inserted to the outside of the first link shaft. The tilt mechanism is constituted to rotate the first link shaft by a power unit for tilting via a first link arm. The lift mechanism is constituted to rotate the second link shaft by a power unit for lifting via a second link arm mounted on the second link shaft. The power units for tilting and lifting are arranged at substantially the same position in the seat longitudinal direction to be separated in the seat width direction on either one side of the seat longitudinal direction in relation to the first link shaft. Each of link lengths of the first and second link arms and each operation stroke of the power units for tilting and lifting is set to be substantially the same. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle seat device including a tilt mechanism that tilts a front portion of a seat cushion and a lift mechanism that lifts a rear portion of the seat cushion.

  Various vehicle seat devices have been proposed that include a tilt mechanism that tilts the front part of the seat cushion and a lift mechanism that lifts the rear part from the viewpoint of enhancing the convenience in use of the seat (Patent Document 1). , See Patent Document 2).

  Such a seat device includes a power unit for a tilt mechanism and a power unit for a lift mechanism, and a link shaft disposed in the seat width direction is rotated by an actuator that moves the power unit back and forth, and the link shaft The rotational displacement is transmitted to the front side and the rear side of the seat cushion via the link mechanism, respectively, so that the tilt operation of the front portion of the seat cushion and the lift operation of the rear portion of the seat cushion are realized. In this case, it is usual to employ a “biaxial structure” in which a tilt link shaft and a lift link shaft are provided, and these two link shafts are arranged in parallel while being appropriately separated from each other in the longitudinal direction of the seat. Met.

Japanese Patent Laid-Open No. 9-226424 JP-A-8-207628.

  By the way, when the seat device is provided with a tilt mechanism and a lift mechanism, these mechanisms are arranged in a space formed on the lower side of the seat cushion. It is not something that can be used as a mechanism placement space, and among the spaces, the rear portion of the seat cushion has a shape in which its lower surface bulges downward for reasons such as seating on the seat cushion, From the viewpoint of securing the vertical lift space for the seat cushion and the foot space for the rear seat occupant, this cannot be used as the layout space for each mechanism. In order to make effective use of this space-constrained arrangement space, each of the above mechanisms can be used. Compact configuration, and is where the compactness of the working space is requested.

  However, as shown in each of the above-mentioned patent documents, when a “biaxial structure” having a dedicated link shaft for each of the tilt mechanism and the lift mechanism is adopted, the two link shafts are mutually connected. In order to avoid interference, it is necessary to dispose these components in the front-rear direction of the seat, and each power unit that drives each link shaft is also disposed between each power unit to avoid interference with other link shafts. Therefore, it is difficult to make the tilt mechanism and the lift mechanism compact, and as a result, a large arrangement space is required. There was a problem that the degree of freedom of layout was hindered.

  Further, for example, when the arrangements of the tilt mechanism and the lift mechanism are different, the shape and dimensions of the support member of the power unit provided in each mechanism or the link connecting the power unit and the link shaft are different. There was also a problem that it could not be realized, resulting in an increase in cost.

  Accordingly, the present invention provides a vehicle seat device that can improve layout in a limited space by making the tilt mechanism and the lift mechanism compact, and can reduce the cost by simplifying the configuration and sharing the members. It was made for the purpose of doing.

  In the present invention, the following configuration is adopted as a specific means for solving such a problem.

  In the first invention of the present application, in the vehicle seat device provided with a tilt mechanism that tilts the front portion of the seat cushion installed below the pad as the seating surface and a lift mechanism that lifts the rear portion of the seat cushion, Between the first front bracket and the second front bracket arranged opposite to each other in the seat width direction, the first link shaft arranged at the front portion of the seat cushion and the outer side of the first link shaft can be relatively rotated. The tilt mechanism includes a fitted second link shaft, and the tilt mechanism rotates the first link shaft by a tilt power unit via a first transmission mechanism portion attached to the first link shaft, and the rotational displacement thereof. Is transmitted to the front portion of the seat cushion by a link mechanism, and the lift mechanism has the second link shaft attached to the second link shaft. (2) The lift power unit is rotated via the transmission mechanism, and the rotational displacement is transmitted to the rear portion of the seat cushion by the link mechanism, while the tilt power unit and the lift power unit are connected to the first link shaft. It is characterized by being installed in the vicinity of the front-rear direction.

  In the second invention of the present application, in the vehicle seat device according to the first invention, the lift mechanism connects the second link shaft and a predetermined portion of the rear portion of the seat cushion and extends substantially in the front-rear direction. The link bar is provided, and the front end and the rear end of the link bar are installed so as to be offset in the vehicle width direction or the vertical direction.

  According to a third invention of the present application, in the vehicle seat device according to the second invention, the link bar is configured such that the rear end is positioned on the outer side in the seat width direction with respect to the front end.

  In the fourth invention of the present application, in the vehicle seat device according to the second invention, the link bar is provided with a deformation promoting portion that is easily deformed by an axial load acting between the front end and the rear end. It is characterized by that.

  According to a fifth invention of the present application, in the vehicle seat device according to the second invention, the tilt mechanism is located on the outer side in the seat width direction from the front end of the link bar, and the front portion of the first link shaft and the seat cushion. It is characterized in that a link mechanism member for connecting is installed.

  In a sixth invention of the present application, in the vehicle seat device according to the first invention, the tilt power unit and the lift power unit are arranged on either side of the seat front-rear direction with respect to the first link shaft. While being arranged at substantially the same position in the seat front-rear direction and spaced apart in the seat width direction, operating strokes of the lift power unit and the lift power unit, and link lengths of the first link arm and the second link arm, It is characterized by being set substantially the same.

(1) According to the vehicle seat device pertaining to the first invention of the present application, the first link shaft provided in the tilt mechanism and the second link shaft provided in the lift mechanism are arranged outside the first link shaft. Since the second link shaft is inserted into the coaxial structure so as to be relatively rotatable, the occupied space of the first link shaft and the second link shaft is, for example, a conventional case where this is formed into a biaxial structure. In comparison, the installation space can be made smaller and can be installed compactly in a limited installation space below the seat cushion to effectively use the installation space.
(2) According to the vehicle seat device pertaining to the second invention of the present application, in addition to the effect described in (1) above, the following specific effect is obtained. That is, according to the present invention, the lift mechanism includes a link bar that connects the second link shaft and a predetermined portion of the rear portion of the seat cushion and extends substantially in the front-rear direction, and the front and rear ends of the link bar. Since the end is offset so as to be offset in the vehicle width direction or the vertical direction, in various collision modes, the front of the link bar is directed forward with respect to the rear end of the link bar due to the load of the passenger acting in the vertical direction on the rear part of the seat cushion. When a load is applied (for example, in the case of a frontal collision in the case of this embodiment), the front end and the rear end of the link bar are offset from each other in the vehicle width direction. It is possible to reduce the load acting on the first and second link shafts while maintaining a large load, and as a result, the first functioning as the seat width direction frame of the front portion of the seat cushion. You can further reduce the load applied to the tank axis, so that its strength properties are improved.
(3) According to the vehicle seat device pertaining to the third invention of the present application, in addition to the effect described in (2) above, the following specific effect is obtained. That is, according to the present invention, the link bar is configured such that the rear end is positioned on the outer side in the seat width direction with respect to the front end, and therefore, at the rear end side of the link bar, that is, at the rear portion of the seat cushion. The space in the seat width direction is enlarged, and accordingly, the pad thickness at the center side in the seat width direction at the rear portion of the seat cushion can be ensured to obtain a good seating feeling.
(4) According to the vehicle seat device pertaining to the fourth invention of the present application, in addition to the effect described in (2) above, the following specific effect is obtained. That is, according to the present invention, the link bar is provided with a deformation promoting portion that is easily deformed by an axial load acting between the front end and the rear end thereof. When the load directed toward the front acts on the rear end of the link bar due to the load of the passenger acting in the direction (for example, in the case of a frontal collision in this embodiment), the link bar is deformed. By actively deforming in the accelerating portion, it is effectively reduced that the load acts on the first and second link shafts while maintaining a large load via the link bar, and as a result, the seat The load applied to the first link 7 also serving as the seat width direction frame at the front portion of the cushion can be further reduced, and the strength performance is improved accordingly.
(5) According to the vehicle seat device pertaining to the fifth invention of the present application, in addition to the effect described in (2) above, the following specific effect is obtained. That is, in the present invention, the tilt mechanism has a configuration in which a link mechanism member that connects the first link shaft and the front portion of the seat cushion is installed on the outer side in the seat width direction from the front end of the link bar. The tilt mechanism can be configured more compactly and installed in a space on the outer side in the sheet width direction from the front end of the link bar obtained by offsetting the front end and the rear end of the link bar.
(6) According to the vehicle seat device pertaining to the sixth invention of the present application, in addition to the effect described in (1) above, the following specific effect is obtained. That is, according to the present invention, the tilt power unit and the lift power unit are separated from each other in the seat width direction at substantially the same position in the seat front-rear direction on either side of the seat link front-rear direction with respect to the first link shaft. And the operation strokes of the lift power unit and the lift power unit, and the link lengths of the first link arm and the second link arm are set substantially the same, so that the power units are the same. And a tilt mechanism including each power unit as compared with the case where each power unit has a different shape and operation stroke at different positions as in the prior art. The form of the lift mechanism can be made compact, and eventually By narrowing the space, it is possible to install in a limited installation space under the seat cushion, and the layout flexibility is improved and the layout design is facilitated, and the power units and the above are supported. The common use of the support member is promoted, and the cost of the tilt mechanism and the lift mechanism can be reduced by reducing the number of members, and further, the cost of the seat device including these mechanisms can be reduced.

  Hereinafter, the present invention will be specifically described based on preferred embodiments.

  FIG. 1 shows a vehicle seat device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is an upper rail, 2 is a lower rail, and both form a slide rail R. The slide rails R are opposed to each other in parallel with a predetermined interval, and the lower rails 2 of the slide rails R are fixed on the vehicle floor, respectively, while the upper rails 1 have a seat frame described later. Z is attached.

  The seat 60 includes a seat cushion 61 fixed to the seat frame Z side, and a seat back 62 attached to the rear end side of the seat cushion 61 via a recliner 63 so as to be tiltable. The

  As will be described later, the seat device includes a tilt mechanism X that tilts the front portion of the seat cushion 61 and a lift mechanism Y that lifts the rear portion on the seat frame Z side. Then, the posture of the seat cushion 61 by the tilt mechanism X and the lift mechanism Y is selected, and the posture selection of the seat back 62 by the recliner and the setting of the front / rear position of the entire seat 60 by the slide rail R are combined. Thus, the seated person can obtain an optimum seat position that matches his / her preference.

  Hereinafter, the configuration, operational effects, and the like of the seat frame Z will be specifically described with reference to FIGS.

  A first front bracket 6A and a second front bracket 6B are attached to the front end portions of the upper rails 1 and 1 of the slide rails R, respectively. The front ends of the first and second front brackets 6A and 6B are integrally connected by a front frame 4 extending in the seat width direction. Further, both end portions of the first link shaft 7 extending in the seat width direction are rotatably supported by the support portions 6Aa and 6Ba provided in the first and second front brackets 6A and 6B.

  On the other hand, among the pair of left and right slide rails R, a bracket 18 is provided at the rear end of the upper rail 1 of one slide rail R, and a bracket 19 is provided at the rear end of the upper rail 1 of the other slide rail R. Each is installed. One end of a link lever 43 is attached to the bracket 18 via a fulcrum pin 38, and one end of the support shaft 15 is fixed to the other end of the link lever 43. One end of a link lever 37 is attached to the bracket 19 via a fulcrum pin 38, and the other end of the support shaft 15 is fixed to the other end of the link lever 37. Further, a rear end of a link bar 36 described later is connected to the link lever 37 by a fulcrum pin 39.

  On both ends of the support shaft 15, a rear end of a first side frame 5A and a rear end of a second side frame 5B described below are supported, respectively. The side frames 5A and 5B support the support shaft 15 respectively. It can be turned up and down as a turning center. The side frames 5A and 5B are attached to the left and right sides of the seat cushion 61 from the outside. The entire seat 60 including the seat cushion 61 is attached to the side frames 5A and 5B. And is supported on the upper rail 1 side so as to be swingable in the vertical direction.

  An arm 31 is attached to a portion of the first link shaft 7 near the first front bracket 6A. A link 33 is attached in the vicinity of the arm 31, and one end of a link 34 is connected to the link 33 via a connecting pin 41, and the other end of the link 34 has a connecting pin 42. The tip of the first side frame 5A is connected via the via. Further, a link 33 is attached to a portion of the first link shaft 7 near the second front bracket 6B, and one end of a link 34 is connected to the link 33 via a connecting pin 41. The other end of the link 34 is connected to the tip of the second side frame 5B via a connecting pin 42.

  The link 33 and the link 34 constitute a “tilt link mechanism” in claims.

  Further, the second link shaft 8 is rotatable at a position near the second front bracket 6B of the first link shaft 7 and on the inner side in the seat width direction from the attachment position of the link 33 on the first link shaft 7 side. It is inserted. The second link shaft 8 is provided with an arm 32 at the inner end in the seat width direction and a link 35 at the inner end in the seat width direction. The tip of the link bar 36 is connected.

  Here, as described above, the link bar 36 is connected to the link 35 on the second link shaft 8 side through the connecting pin 44, and the rear end of the link bar 36 is the rear of the upper rail 1. In this case, the link bar 36 is bent so that its rear end is located on the outer side in the sheet width direction from its front end. The music part is a deformation promoting part P. In this embodiment, the link lever 37 has its front end and rear end offset in the sheet width direction, but in other embodiments it can be offset in the vertical direction.

  The link 35, the link bar 36, and the link lever 37 constitute a "lift link mechanism" in the claims.

  On the other hand, the first unit support bracket 9A and the second unit support bracket 9B are located at positions closer to the rear of the seat than the mounting portions of the first link shaft 7 of the upper rails 1 and 1 and facing each other in the seat width direction. These are attached in a state extending from the upper rail 1 inward in the seat width direction. Of the pair of left and right first and second unit support brackets 9A, 9B, the first unit support bracket 9A is fixed with a tilt power unit 21 including a motor 22 and a gear portion 23, and The arm 31 is connected to the tip of the actuator 27 provided in the gear portion 23 via a connecting pin 40. It is to be noted that the rotational force of the tilt power unit 21 is transmitted to the first link shaft 7 by the arm 31 connected to the gear portion 23 and the actuator 27 provided on the gear portion 23. The “first transmission mechanism” is formed.

  A lift power unit 24 composed of a motor 25 and a gear portion 26 is fixed to the second unit support bracket 9B, and a connecting pin 40 is provided at the tip of an actuator 28 provided in the gear portion 26. The arm 32 is connected through the via. It is to be noted that the rotational force of the lift power unit 24 is transmitted to the second link shaft 8 by the arm 32 connected to the gear portion 26 and the actuator 28 provided in the gear portion 26. The “second transmission mechanism” is formed.

  As described above, the tilt power unit 21 and the lift power unit 24 are installed at the front portion of the seat cushion 61 and behind the first link shaft 7, thereby the seat cushion 61. The space below the front portion can be widened.

  Further, the first unit support bracket 9A and the second unit support bracket 9B are connected by a first member 11. Further, an intermediate position in the seat width direction of the first member 11 and an intermediate position in the seat width direction of the front frame 4 are connected by a second member 12. Further, the first link shaft 7 is fitted and supported so as to be rotatable relative to a vertical flange portion 12 a provided at an intermediate position of the second member 12. The first member 11 and the second member 12 constitute a reinforcing member 10.

  The tilt power unit 21, the first link shaft 7 and the tilt link mechanism constitute a “tilt mechanism X” in the claims. Further, the lift power unit 24, the second link shaft 8, and the lift link mechanism constitute the "lift mechanism Y" in the claims.

  Here, the operation modes of the tilt mechanism X and the lift mechanism Y will be described.

  In the tilt mechanism X, when the operating element 27 is extended / reduced by the operation of the tilt power unit 21, the first link shaft 7 is rotated in the arrow m / n direction (see FIG. 1) via the arm 31. The rotation of the first link shaft 7 is transmitted to the tip side of each side frame 5A, 5B via the link 33 and link 34, and the tip side is displaced upward / downward, thereby realizing a tilting action. Is done.

  In the lift mechanism Y, when the actuator 28 is extended / reduced by the operation of the lift power unit 24, the second link shaft 8 is rotated in the arrow m / n direction (see FIG. 1) via the arm 32. The rotation of the second link shaft 8 is transmitted to the link lever 37 through the link 35 and the link bar 36, and the rotation of the link lever 37 causes the rear end sides of the side frames 5A and 5B to move up / down. Displacement in the direction, thereby realizing a lifting action.

By the way, in this embodiment, when designing the tilt mechanism X and the lift mechanism Y,
(A) The tilt mechanism X and the lift mechanism Y are compactly arranged in a limited installation space provided on the lower surface near the front portion of the seat cushion 61;
(B) sharing the members between the tilt mechanism X and the lift mechanism Y;
In order to realize this, the following new unique configuration is adopted.

  That is, as shown in FIGS. 2 and 3, the unit support brackets connected by the first link shaft 7 and the second link shaft 8 having a coaxial structure and the first member 11 of the reinforcing member 10. The tilt power unit 21 and the lift power unit 24 are respectively disposed in the space between the seats 9A and 9B in the front-rear direction of the seat, and the actuators 27 provided on the gear portions 23 and 26 of the power units 21 and 24, respectively. 28 is connected to the arms 31 and 32 provided on the link shafts 7 and 8, respectively.

  In this case, as shown in FIG. 4, after the tilt power unit 21 and the lift power unit 24 have the same configuration, the power units 21 and 24 are identical in the seat longitudinal direction of the pair of upper rails 1 and 1. The first unit support bracket 9 </ b> A and the second unit support bracket 9 </ b> B provided at the respective positions are coupled to the first unit support bracket 9 </ b> B via the bracket 46 so as to be swingable in the vertical direction. In the power units 21 and 24, the minimum lengths L1 of the actuators 27 and 28 are set to be the same. Furthermore, the link length of the arm 31 provided on the first link shaft 7 and the arm 32 provided on the second link shaft 8 is set to the same dimension L2. Accordingly, the operation stroke around the fulcrum pin 45 associated with the advance / retreat displacement of the actuator 27 of the tilt power unit 21 and the operation stroke around the fulcrum pin 45 associated with the advance / retreat displacement of the actuator 28 of the lift power unit 24. Are also the same.

  According to this setting, the tilt power unit 21 and the arm 31 on the tilt mechanism X side overlap with the lift power unit 24 and the arm 32 on the lift mechanism Y side in a side view. And since the said 1st link shaft 7 and the 2nd link shaft 8 are coaxial structures, in the seat front-back direction between this each link shaft 7 and 8 and each said unit support bracket 9A, 9B as mentioned above. The space is narrower than in the conventional “biaxial configuration”.

  As a result, in this embodiment, the tilt mechanism X and the lift mechanism Y can be compactly arranged in a narrower installation space, and the tilt mechanism X and the lift mechanism Y can be made compact and the seat cushion 61 can be made compact. The effective use of the space below is compatible.

  Furthermore, the first unit support bracket 9A and the first unit support bracket 9A and the arm 31 and arm 32 can be shared, and the cost can be reduced by reducing the number of members.

  Further, in this embodiment, the lift mechanism Y includes the link bar 36 that connects the second link shaft 8 and a predetermined portion of the rear portion of the seat cushion 61 and extends substantially in the front-rear direction. At the same time, the link bar 36 is formed so as to be inclined in the front-rear direction in a plan view so that the rear end thereof is located on the outer side in the seat width direction from the front end thereof, and this inclined portion is used as the deformation promoting portion P In the case of a frontal collision, even if a load directed to the front acts on the rear end of the link bar 36 by the movement of the seated occupant, the link lever 37 rotates forward about the fulcrum 38, and the deformation is caused by the load. When the promotion part P is deformed in the direction in which the deformation further proceeds, the load is absorbed and the load applied to the second link shaft 8 can be reduced. Further, at the time of a rear collision, even if the link lever 37 rotates rearward about the fulcrum 38 and a load directed rearward acts on the rear end of the link bar 36, the deformation promoting portion P is By deforming the bar 36 so as to be substantially straight, it is possible to absorb the load and reduce the load applied to the second link shaft 8. In this case, as in this embodiment, by providing the link bar 36 only on either the left or right side in the seat width direction, the deformation promoting portion P is easily deformed, and the load applied to the first link shaft 7 is increased. Can be further reduced.

  In this embodiment, the tilt power unit 21 and the lift power unit 24 are installed so as to be positioned below the first link shaft 7, and the first transmission mechanism unit or the second power unit 24. When the transmission mechanism portion is constituted by the link arms 31 and 32 and is in the lowest position in the tilt mechanism X or the lowest position in the lift mechanism Y, the link arms 31 and 32 are connected to the first link shaft 7. It is configured to be on the lower side. With this configuration, when the power units 21 and 22 are disposed below, the power units 21 and 22 are connected to the first link shaft 7 or the second link shaft 8 via the link arms 31 and 32, respectively. And the link arms 31 and 32 are located below the first link shaft 7 when the tilt mechanism X is at the lowest position in the tilt mechanism X or the lowest position in the lift mechanism Y. The power units 21 and 22 can be installed on the lower side, whereby the seat cushion 61 pad can be formed thick and seating accuracy can be improved.

It is a principal part side view of the vehicle seat apparatus which concerns on embodiment of this invention. It is a perspective view of the seat frame part shown in FIG. It is a top view of the seat frame part shown in FIG. It is structure explanatory drawing of a tilt mechanism and a lift mechanism part.

Explanation of symbols

1 ·· Upper rail 2 ·· Lower rail 4 ·· Front frame 5A ·· First side frame 5B · · Second side frame 6A · · First front bracket 6B · · Second front bracket 7 · · First link shaft 8・ ・ Second link shaft 9A ・ ・ First unit support bracket 9B ・ ・ Second unit support bracket 10 ・ ・ Reinforcement member 11 ・ ・ First member 12 ・ ・ Second member 15 ・ ・ Support shaft 21 ・ ・ Power unit for tilt 22 ..Motor 23 ..Gear part 24 ..Power unit for lift 25 ..Motor 26 ..Gear part 27 ..Operator 28 ..Operator 31 ..Arm 32. 35 ・ ・ Link 36 ・ ・ Link bar 37 ・ ・ Link lever 38 ・ ・ Support pin 39 ・ ・ Support pin 40 · · Connection pin 41 · · Connection pin 42 · · Connection pin 43 · · Link lever 44 · · Connection pin 45 · · Support pin 46 · · Bracket 51 · · Fixing bolt

Claims (6)

A vehicle seat device including a tilt mechanism that is installed under a pad as a seating surface and tilts a front portion of a seat cushion, and a lift mechanism that lifts a rear portion of the seat cushion,
Between the first front bracket and the second front bracket arranged opposite to each other in the seat width direction, the first link shaft arranged at the front portion of the seat cushion and the outer side of the first link shaft can be relatively rotated. While having a second link shaft inserted,
The tilt mechanism rotates the first link shaft by a tilt power unit via a first transmission mechanism portion attached to the first link shaft, and transmits the rotational displacement to the front portion of the seat cushion by the link mechanism. And is configured to
The lift mechanism rotates the second link shaft by a lift power unit via a second transmission mechanism portion attached to the second link shaft, and transmits the rotational displacement to the rear portion of the seat cushion by the link mechanism. While being configured,
The vehicle seat apparatus according to claim 1, wherein the tilt power unit and the lift power unit are installed in the vicinity of the first link shaft in the front-rear direction. In claim 1,
The lift mechanism includes a link bar that connects the second link shaft and a predetermined portion of the rear portion of the seat cushion and extends substantially in the front-rear direction,
A vehicular seat device, wherein the front end and the rear end of the link bar are installed so as to be offset in a vehicle width direction or a vertical direction. In claim 2,
The vehicle seat apparatus according to claim 1, wherein the link bar is configured such that a rear end thereof is positioned on an outer side in a seat width direction with respect to a front end. In claim 2,
The vehicle seat apparatus according to claim 1, wherein the link bar is provided with a deformation promoting portion that is easily deformed by an axial load acting between the front end and the rear end. In claim 2,
The tilt mechanism has a configuration in which a link mechanism member that connects the first link shaft and the front portion of the seat cushion is installed outside the front end of the link bar in the seat width direction. apparatus. In claim 1,
The tilt power unit and the lift power unit are arranged at substantially the same position in the seat front-rear direction and spaced apart in the seat width direction on either side of the seat front-rear direction with respect to the first link shaft,
The vehicle seat device, wherein the lift power unit and the lift power unit operating strokes and the link lengths of the first link arm and the second link arm are set substantially the same.

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