JP2014226964A - Seat device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat device for a vehicle that is reduced in size, weight and cost.SOLUTION: An outer slide mechanism 40 of the seat device for a vehicle is constituted of: a fixed rack 46 on a rotary table 35; and an outer slide member 44 that can be moved along the fixed rack 46 and slides a seat main body 12. A lifting mechanism, connected to the outer slide member 44, comprises: a guide member 51 capable of guiding lifting of the seat main body 12; a lifting rack 56 provided along the guide member 51; and a pinion 71 that is provided near the seat main body 12 and can be moved along the lifting rack 56. The fixed rack 46 is configured so that the pinion 71 near the seat main body 12 can transfer from the lifting rack 56 thereto.

Description

  The present invention relates to a vehicle seat device that includes an elevating mechanism that is used when an elderly person or a disabled person gets on and off a vehicle and raises and lowers a seat body outside a passenger compartment.

A related-art vehicle seat device related to this is described in Patent Document 1.
As shown in FIG. 11, an elevating mechanism 110 of a vehicle seat device 100 according to Patent Literature 1 includes a lateral slide member 112 configured to be slidable in the left-right direction (inside the vehicle interior) on the rotary table 105, and a seat A lifting / lowering member 116 that supports the main body 120, a four-bar linkage mechanism 114 that connects the lateral sliding member 112 and the lifting / lowering member 116 in a vertically rotatable state, and a lifting / lowering drive source 119 that horizontally slides the lateral sliding member 112. And.
In the vehicle seat device 100, when the seat body 120 is lowered, the horizontal slide member 112 is moved from the right side of the rotary table 105 to the left side (outside of the passenger compartment) by the lifting drive source 119. As a result, the four-bar linkage mechanism 114 is pushed by the lateral slide member 112 and moved downwardly around the fulcrum 118 by the weight of the seat body 120 while moving outwardly from the passenger compartment, and the elevating member 116 and the seat body 120 are lowered. To come.
When the seat body 120 is raised, the horizontal slide member 112 is moved from the left side to the right side (vehicle interior direction) on the rotary table 105 by the lifting drive source 119. As a result, the four-bar linkage mechanism 114 is pulled by the lateral slide member 112 and moved upwardly around the fulcrum 118 while moving in the vehicle interior direction, so that the elevating member 116 and the seat body 120 are raised.

JP 2008-126875 A

In the lifting mechanism 110 of the vehicle seat device 100 described above, the lateral slide member 112 and the four-bar linkage mechanism 114 are pulled in the vehicle interior direction by the lifting drive source 119, and the four-bar link mechanism 114 is rotated upward around the fulcrum 118. It is the structure which raises the sheet | seat main body 120 by moving. That is, the horizontal force of the lifting drive source 119 is converted to the upward force using the four-bar linkage mechanism 114 and the fulcrum 118.
For this reason, there is a problem that the utilization efficiency of the force is low, the lifting drive source 119 is enlarged, and the price is increased.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to provide a vehicle seat device having a structure in which the rotational force of the motor efficiently works to raise and lower the seat body. Is to reduce the size and weight and reduce the price.

The above-described problems are solved by the inventions of the claims.
The invention of claim 1 includes a rotary table on which a seat body is placed, and is provided in the rotary table that rotates the seat body in a vehicle interior by the rotation of the rotary table, and the rotary table, A vehicle seat device comprising: an outer slide mechanism that slides the seat body to the outside of the entrance / exit, and an elevating mechanism that is supported by the outer slide mechanism and raises / lowers the seat body outside the entrance / exit, The outer slide mechanism is provided on a fixed rack having rack teeth that are fixed on the rotary table and extend in the sliding direction of the seat body, and is slidable along the rack teeth of the fixed rack, and supports the seat body. And the elevating mechanism is connected to the outer slide member of the outer slide mechanism to raise and lower the seat body. A guide member configured to be able to guide, a lifting rack provided with rack teeth along the guide member, and a rack tooth of the lifting rack provided on the seat body side and rotated by a rotational force of a motor. And a pinion configured to be movable along the lifting rack. The fixed rack of the outer slide mechanism and the lifting rack of the lifting mechanism are arranged so that the outer slide mechanism gets on and off the seat body. The seat main body-side pinion is configured to be able to move between the fixed rack and the lifting rack while being slid out of the mouth.

According to the present invention, the pinion provided on the seat body side is configured to mesh with the rack teeth of the lifting rack provided along the guide member that guides the lifting and lowering of the seat body and to move along the lifting rack. ing. That is, the seat body can be moved up and down along the guide member by the meshing action of the rack teeth of the lifting rack and the pinion.
This eliminates the need for a mechanism for changing the direction of the force (four-bar linkage mechanism or the like) as in the prior art, and allows the rotational force of the motor to efficiently work to raise and lower the seat body.
Further, the fixed rack of the outer slide mechanism is configured such that the pinion on the seat body side can be transferred from the lifting rack, so that the pinion on the seat body side, a motor, and the like can be used as a drive source for the outer slide mechanism. become. That is, since the drive source of the elevating mechanism and the drive source of the outer slide mechanism can be made common, the vehicle seat device can be reduced in size, weight, and cost.

According to the second aspect of the present invention, the guide member is fixed to the outer slide member of the outer slide mechanism at a predetermined inclination angle, and is pivoted up and down via the hinge mechanism at the lower end of the fixed guide. The movable guide includes a movable guide provided with the lifting rack, and is configured to guide the lifting and lowering of the seat body in a state where the movable guide is continuous with the fixed guide. The outer slide mechanism is configured to be rotatable downward from a position extending along the sliding direction to a position continuous with the fixed guide when the seat body is slid out of the entrance / exit. And
For this reason, the movable guide of the guide member can be rotated upward from a position continuous with the fixed guide to a position extending along the slide direction by the outer slide member sliding the seat body from the entrance / exit to the vehicle interior. It becomes like this. For this reason, the guide member (movable guide) does not get in the way when the seat body is stored in the vehicle interior.

According to a third aspect of the present invention, the pinion is horizontally attached to the seat body so that the axis of the pinion extends in the width direction of the seat body, and the fixed rack of the outer slide mechanism has an upper surface side. Rack teeth are formed on the upper and lower sides of the elevating rack of the elevating mechanism, and the elevating and lowering mechanisms are configured so that the outer slide mechanism slides the seat body out of the entrance and exit. The rack teeth at the upper end of the rack overlap with the rack teeth at the front end portion of the fixed rack in the width direction of the seat body, and the pinion can mesh with both the lifting rack and the fixed rack at the overlapping portion. It is characterized by being.
According to the invention of claim 4, the tip end portion of the fixed rack is formed in a fan-shaped gear shape.
For this reason, the pinion can smoothly transfer between the lifting rack and the fixed rack.

  According to the present invention, the rotational force of the motor efficiently works to raise and lower the seat body, and the vehicle seat device can be reduced in size and weight, and the cost can be reduced.

It is the model perspective view which looked at the vehicle seat apparatus which concerns on Embodiment 1 of this invention from the diagonally backward of the vehicle. It is the model rear view (II-II arrow line view of FIG. 4) which looked at the said vehicle seat apparatus from the vehicle rear. It is the model rear view (III-III arrow line view of FIG. 4) which looked at the said vehicle seat apparatus from the vehicle rear. FIG. 3 is a schematic side view showing a state in which the seat body of the vehicle seat device is horizontally rotated to a lateral position facing the entrance / exit side. FIG. 4 is a side view (A view) showing a fixed rack of an outer slide mechanism of a vehicle seat device in a vehicle interior, a side view (B view) showing a lift rack of the lift mechanism, and a CC arrow view (C view) in FIG. . It is a side view (A figure, B figure) showing operation | movement of the raising / lowering rack of the said vehicle seat apparatus, a fixed rack, and a pinion. It is a model perspective view showing the raising / lowering rack of the said vehicle seat apparatus, a fixed rack, and a pinion. It is a model side view of the cam mechanism for movable guides used for rotation of the movable guide of the said guide member. It is a model side view showing operation | movement of the said vehicle seat apparatus. It is a model side view showing operation | movement of the said vehicle seat apparatus. It is a model side view showing operation | movement of the conventional vehicle seat apparatus.

[Embodiment 1]
Hereinafter, based on FIGS. 1-10, the vehicle seat apparatus which concerns on Embodiment 1 of this invention is demonstrated. The vehicle seat device according to the present embodiment is a seat that is used when an elderly person or a disabled person gets on and off the passenger car C.
Here, front, rear, left, right, and top and bottom in the figure correspond to front, back, left, right, and top and bottom of a vehicle including a vehicle seat device.

<About the outline | summary of the vehicle seat apparatus 10>
As shown in FIG. 1, the vehicle seat device 10 is a seat that is used as a passenger seat of a passenger car C. The seat body 12 and the seat body 12 are arranged at a predetermined position in the vehicle interior and outside the vehicle interior (of the entrance D). And a sheet moving device 200 that moves between the outer and lower boarding / alighting positions.
The seat moving device 200 includes a front / rear slide mechanism 20 installed on the vehicle floor F, and a rotation mechanism 30 installed on the front / rear slide base 21 of the front / rear slide mechanism 20, as shown in FIGS. The outer slide mechanism 40 installed on the rotary table 35 of the rotation mechanism 30 and the elevating mechanism 50 provided on the outer slide member 44 of the outer slide mechanism 40 are provided. The seat body 12 is horizontally supported by the lifting member 59 of the lifting mechanism 50.
The seat body 12 includes a seat cushion 14 and a seat back 16 as shown in FIGS. 1 to 4, and the seat cushion 14 is supported from below by a seat frame 15. And as shown in FIG. 4 etc., the raising / lowering member 59 of the raising / lowering mechanism 50 is being fixed to the rear-end position of the seat frame 15 of the seat main body 12. FIG.

<Fore-and-aft slide mechanism 20>
The front / rear slide mechanism 20 is a mechanism that moves the seat body 12 in the vehicle front-rear direction in the vehicle interior. As shown in FIG. 2 and the like, the front / rear slide mechanism 20 includes a pair of left and right fixed-side rails 22 installed on the fixed base 23 of the vehicle floor F so as to extend in the vehicle front-rear direction. The front / rear slide base 21 is supported in a slidable state, and a drive unit 24 for sliding the front / rear slide base 21 back and forth.
As the drive unit 24, for example, a mechanism that rotates the screw shaft 24b around the axis by the drive motor 24a and moves the nut portion 24c screwed to the screw shaft 24b along the screw shaft 24b is preferable. It is used.

<About Rotating Mechanism 30>
On the front / rear slide base 21, a rotation mechanism 30 is installed as shown in FIG. The rotation mechanism 30 is a mechanism that horizontally rotates the seat body 12 between a seating position facing forward of the vehicle and a sideways position facing the entrance D.
The rotating mechanism 30 includes an inner ring 31a fixed on the front / rear slide base 21, an outer ring 31b supported rotatably with respect to the inner ring 31a, a rotary table 35 fixed on the outer ring 31b, and the inner ring 31a. And a drive unit 32 that rotates the outer ring 31b.
As the drive part 32, the structure which transmits the rotational force of the rotating motor 32m to the outer ring | wheel 31b by the gear transmission mechanism 32a is used suitably, for example.

<About the outer slide mechanism 40>
On the rotary table 35 of the rotating mechanism 30, the seat body 12 is slid to the outside of the entrance D along the upper surface of the rotary table 35 in a state where the seat body 12 is horizontally rotated to a lateral position facing the entrance D side. An outer slide mechanism 40 is provided. As shown in FIGS. 2 and 3, the outer slide mechanism 40 includes a pair of fixed slide rails 41 extending in the front-rear direction of the seat body 12 on both sides in the width direction of the rotary table 35, and sliding along the fixed slide rails 41. The slider 41s is configured to be movable, and the outer slide member 44 is supported by the left and right sliders 41s and configured to be slidable along the fixed slide rail 41. As shown in FIGS. 2 and 4, the outer slide member 44 is provided with a pair of vertical plate portions 44 b on both sides in the width direction (left and right sides) of the rotary table 35. And the fixed guide 52 (after-mentioned) of the guide member 51 of the raising / lowering mechanism 50 is being fixed to the left-right vertical board part 44b of the outer slide member 44 with the predetermined inclination angle.
Further, the outer slide mechanism 40 includes a pair of left and right fixed racks 46 that are used as a slide drive unit of the outer slide member 44. As shown in the rear view of FIG. 3 and the side view of FIG. 5A, the fixed rack 46 is configured so that a pair of left and right pinions 71 (described later) provided on the seat body 12 can be engaged with each other. It is a rack. The left and right fixed racks 46 are fixed on the rotary table 35 in parallel with the fixed slide rails 41 at positions outside the left and right fixed slide rails 41 in the width direction. As shown in FIGS. 5A and 6, the fixed rack 46 is formed in a band plate shape, and rack teeth 46w are formed on the upper surface side. And the front-end | tip part of the fixed rack 46 is formed in the circular arc shape (fan shape) with a center angle of about 90 degrees. Here, the height dimension of the fixed rack 46 is set to H1, and the radius of the arc of the tip portion is set to H1.

<About the outline of the lifting mechanism 50>
The lifting mechanism 50 is a mechanism that lifts and lowers the seat body 12 outside the entrance D. As shown in FIGS. 5 to 8 and the like, the elevating mechanism 50 vertically rotates a pair of left and right guide members 51 that guide the seat body 12 from both sides in the width direction and a movable guide 53 (described later) of the guide member 51. A pair of movable guide cam mechanisms 60 (see FIG. 8) and a pair of guide members 51, and a lift member 59 fixed to the seat frame 15 of the seat body 12. ing. Further, the elevating mechanism 50 includes a pair of left and right elevating racks 56 used as elevating drive units of the seat body 12 (elevating member 59), and an elevating slide drive source 70 (see FIG. 7) provided in the seat body 12. I have.

<About the guide member 51>
The pair of left and right guide members 51 are rail-like members that guide the lifting and lowering of the seat body 12, and as shown in FIGS. 4 and 8 to 10 and the like, a short rail-like fixed guide 52 and a long rail-like movable member. It comprises a guide 53 and a hinge mechanism 54 that couples both guides 52 and 53 in a state in which they can be rotated relative to each other in the vertical direction.
The fixed guide 52 and the movable guide 53 are formed with the same cross-sectional dimensions and the same cross-sectional shape with a U-shaped cross-section. As shown in FIG. 2, the fixed guide 52 is inclined about 45 ° so that the front side of the seat body 12 is lowered in the front-rear direction, and the back side of the vertical plate portion 44 b of the outer slide member 44 (the width of the rotary table 35). Fixed inside). Here, the fixed guides 52 provided on both sides in the width direction of the seat body 12 are fixed to the back side of the vertical plate portion 44b of the outer slide member 44 so that the opening sides of the U-shaped cross-sections face each other. Moreover, as shown in FIG. 4 etc., the one end side of the hinge mechanism 54 is being fixed to the upper part of the lower end of the fixed guide 52. As shown in FIG.
As shown in FIGS. 7 and 8, the hinge mechanism 54 is attached to the fixed guide 52 so that the central axis of rotation is horizontal, and the other end side of the hinge mechanism 54 is the base end of the movable guide 53. It is fixed to the upper part of the part. Thereby, the movable guide 53 is connected to the lower end of the fixed guide 52 via the hinge mechanism 54 so as to be rotatable up and down. 4 and 5, the movable guide 53 can be rotated downward from a state where it is bent with respect to the fixed guide 52 to a position that is continuous in a straight line as shown in FIG. . Here, the movable guide 53 is connected to the lower end of the fixed guide 52 so that the opening direction of the U-shaped cross section in the horizontal direction coincides with the opening direction of the fixed guide 52.

<About lifting rack 56>
As shown in FIGS. 5 to 7, a lifting rack 56 is fixed along the movable guide 53 on the upper portion of the movable guide 53 in the left and right guide members 51. Here, in FIGS. 4 and 8 to 10, the lifting rack 56 is omitted.
As shown in FIGS. 6A and 6B, the left and right lifting racks 56 are racks configured so that a pair of left and right pinions 71 provided on the seat body 12 can mesh with each other. The elevating rack 56 is formed in a band plate shape, and rack teeth 56w are formed on the upper surface side. Here, the height dimension of the lifting rack 56 from the lower surface of the movable guide 53 is set to H2 (> H1).
Then, as shown in FIGS. 6 and 7, the rack teeth 56 w at the upper end of the lifting rack 56 are fixed in a state where the movable guide 53 is rotated downward to a position that is linearly continuous with the fixed guide 52. The rack teeth 46 w at the front end of the rack 46 overlap with the width direction of the sheet body 12. As a result, the pinion 71 of the seat body 12 can mesh with the lifting rack 56 and the fixed rack 46.

<About the movable guide cam mechanism 60>
As shown in FIG. 8, a movable guide cam mechanism 60 is provided between the movable guide 53 of the left and right guide members 51 and the rotary table 35. When the movable guide 53 moves on the rotary table 35 in the front-rear direction of the seat body 12 together with the fixed guide 52 and the outer slide member 44, the movable guide cam mechanism 60 is centered on the rotation center axis of the hinge mechanism 54. It is a mechanism that rotates slowly. The movable guide cam mechanism 60 includes a strip-shaped cam 62 that extends in the sliding direction of the outer slide member 44 on the rotary table 35, and a roller-shaped cam follower 64 that is rotatably provided on the upper outer surface of the movable guide 53. It is composed of As the movable guide 53 slides back and forth, the cam follower 64 rolls back and forth on the cam surface 62 m of the cam 62.

With the above configuration, when the outer slide member 44 slides rearward (indoor side) from the tip position of the rotary table 35 shown in FIG. 8, the fixed guide 52 and the movable guide 53 slide rearward together with the outer slide member 44, and the movable guide 53. The cam follower 64 rolls backward on the cam surface 62 m of the cam 62 on the rotary table 35. As a result, the movable guide 53 rotates upward about the hinge mechanism 54 and is stored on the rotary table 35. That is, the movable guide 53 is stored in a state bent upward with respect to the fixed guide 52 (see FIGS. 4 and 5).
When the outer slide member 44 slides forward from the rear end position of the rotary table 35, the fixed guide 52 and the movable guide 53 slide forward, and the cam follower 64 of the movable guide 53 moves forward on the cam surface 62m of the cam 62. Roll. As a result, the movable guide 53 is rotated downward by its own weight around the hinge mechanism 54, and the movable guide 53 is moved in a state where the outer slide member 44 has reached the tip end position of the rotary table 35 as shown in FIG. The fixed guide 52 is held in a linearly continuous position.

<Regarding Elevating Member 59 and Elevating Slide Drive Source 70>
As shown in FIGS. 9 and 10, the elevating member 59 is fixed to the seat frame 15 of the seat body 12, and the fixed guide 52 and the movable guide 53 are continuous with the seat body 12 held horizontally. It is comprised so that it can raise / lower along the guide member 51 of a state. That is, as shown in FIG. 2 and the like, the lifting member 59 is provided with a set of two rolling rollers 59r at each side position in the width direction of the sheet main body 12. The rolling rollers 59r on both sides in the width direction of the elevating member 59 are fitted into the left and right guide members 51 from the inner side in the width direction. Accordingly, as shown in FIGS. 9 and 10, the elevating member 59 can be moved up and down along the guide member 51 in a state where the fixed guide 52 and the movable guide 53 are continuous with the sheet main body 12 supported horizontally. It becomes.
As shown in FIG. 7, the elevating slide drive source 70 elevates and lowers the seat main body 12 and the elevating member 59 along the guide member 51 (movable guide 53 and the like), and the seat main body 12, the elevating member 59, and the outer slide member. This is a drive source used when 44 is slid along the fixed slide rail 41 on the rotary table 35. The elevating slide drive source 70 is provided symmetrically on the left side and the right side of the seat frame 15 of the seat body 12. In FIG. 7, only the right lifting slide drive source 70 is shown, and the left lifting slide drive source 70 is omitted. In FIG. 7, the outer slide member 44 and the like are also omitted.
The raising / lowering slide drive source 70 includes a motor 72 installed at the front portion of the seat frame 15 of the seat body 12, a pinion 71 installed at the rear end portion of the seat frame 15, and the rotational force of the motor 72 to the rear pinion 71. And a rotation transmission mechanism 75 for transmitting up to.
The pinion 71 of the lifting slide drive source 70 is horizontally attached to the seat frame 15 of the seat body 12 so that the axis of the pinion 71 extends in the width direction of the seat body 12. The pinion 71 is configured to be movable along a lifting rack 56 provided on the movable guide 53 and a fixed rack 46 on the rotary table 35.

<Operation of Vehicle Seat Device 10>
Next, the operation of the vehicle seat device 10 will be described.
First, the case where the seat main body 12 in the passenger compartment is moved to the entry / exit position outside the passenger compartment will be described. Here, in the state where the seat body 12 is in the passenger compartment, the seat body 12 is at the rear end position of the rotary table 35, and the pinion 71 of the lifting slide drive source 70 of the seat body 12 is shown in FIGS. ), The rack teeth 46w of the fixed rack 46 on the turntable 35 are engaged.
In this state, as shown in FIG. 1, when the door (not shown) of the passenger car C is opened and the getting-off switch (not shown) is operated, first, the drive unit 24 of the front / rear slide mechanism 20 operates to turn the turntable 35. And the seat body 12 slides in the vehicle longitudinal direction to the rotational position. Next, the drive unit 32 of the rotation mechanism 30 operates to rotate the turntable 35 horizontally, and as shown in FIG. 4, the seat body 12 rotates from the seating position facing the front of the vehicle to the sideways position facing the entrance D side. To do.

Next, the motor 72 of the raising / lowering slide drive source 70 of the seat body 12 is driven, and the pinion 71 rotates forward. 5A and 5B, the pinion 71 moves forward along the fixed rack 46 while meshing with the rack teeth 46w of the fixed rack 46. As a result, the outer slide member 44 supporting the seat body 12 slides forward (in the vehicle exterior direction) along the fixed slide rail 41 on the rotary table 35. That is, the seat body 12 supported by the outer slide member 44, the elevating member 59, and the left and right guide members 51 (the fixed guide 52 and the movable guide 53) slide forward on the rotary table 35.
As a result, the cam follower 64 of the movable guide 53 rolls forward along the cam surface 62m of the cam 62 on the rotary table 35 (see FIG. 8), and the movable guide 53 moves downward with its own weight around the hinge mechanism 54. It turns gently. Then, as shown in FIGS. 6A, 8, and 9, the movable guide 53 rotates to a position where the movable guide 53 continues to the fixed guide 52 in a state where the outer slide member 44 has reached the tip position of the rotary table 35, as shown in FIGS. . That is, the movable guide 53 is held at the same inclination angle as the fixed guide 52.

  In this state, as shown in FIGS. 6 (A), (B), and FIG. It overlaps in the width direction of the main body 12. When the pinion 71 of the seat body 12 reaches the tip of the fixed rack 46, the pinion 71 meshes with both the rack teeth 46w of the fixed rack 46 and the rack teeth 56w of the lifting rack 56 (FIG. 6 ( A)). Further, the rotation of the pinion 71 is continued from this state, so that the pinion 71 is transferred from the fixed rack 46 to the lifting rack 56. The pinion 71 moves forward (down) along the lifting rack while meshing with the rack teeth 56 w of the lifting rack 56. As a result, the seat body 12 and the elevating member 59 are lowered along the movable guide 53. Then, as shown in FIGS. 6B and 10, the motor 72 of the elevating slide drive source 70 is stopped in a state where the seat main body 12 is lowered to the getting on / off position, and the seat main body 12 is held at the getting on / off position.

Next, the case where the seat body 12 at the getting-on / off position is moved to the passenger compartment will be described. In this case, when a boarding switch (not shown) is operated, first, the motor 72 of the raising / lowering slide drive source 70 of the seat body 12 is driven in reverse. As a result, the pinion 71 of the lifting slide drive source 70 rises along the lifting rack, and the seat body 12 and the lifting member 59 rise along the movable guide 53. When the pinion 71 of the seat body 12 reaches the upper end of the lifting rack, the pinion 71 meshes with both the rack teeth 56w of the lifting rack 56 and the rack teeth 46w of the fixed rack 46 (FIG. 6 ( A)). Further, when the rotation of the pinion 71 is continued from this state, the pinion 71 is transferred from the lifting rack 56 to the fixed rack 46. The pinion 71 moves back along the fixed rack 46 while meshing with the rack teeth 46 w of the fixed rack 46. Thereby, the outer slide member 44 supporting the seat body 12 slides rearward (in the vehicle interior direction) along the fixed slide rail 41 on the rotary table 35. That is, the seat body 12 supported by the outer slide member 44, the elevating member 59, and the left and right guide members 51 (the fixed guide 52 and the movable guide 53) slide rearward on the rotary table 35. As a result, the cam follower 64 of the movable guide 53 rolls backward along the cam surface 62m of the cam 62 on the rotary table 35, and the movable guide 53 rotates upward about the hinge mechanism 54. Then, the movable guide 53 is stored on the rotary table 35 in a state where the outer slide member 44 has reached the rear end position of the rotary table 35 as shown in FIGS.
Thereafter, when the rotation mechanism 30 and the front / rear slide mechanism 20 are operated, the seat body 12 is returned to the vehicle forward position in the vehicle interior.

<Advantages of the vehicle seat device 10 according to the present embodiment>
According to the vehicle seat device 10 according to the present embodiment, the pinion 71 provided on the seat body 12 side is a lifting rack 56 of the guide member 51 (movable guide 53) configured to guide the lifting and lowering of the seat body 12. And is movable along the lifting rack 56. That is, the seat body 12 can be lifted and lowered along the guide member 51 by the meshing action of the lifting rack 56 and the pinion 71.
This eliminates the need for a mechanism for changing the direction of force (such as a four-bar linkage mechanism) as in the prior art, and allows the rotational force of the motor 72 to efficiently move up and down the seat body 12. Can be reduced in size and price.
Further, since the fixed rack 46 of the outer slide mechanism 40 is configured such that the pinion 71 on the seat body 12 side can be transferred from the lifting rack 56, the pinion 71 on the seat body 12 side, the motor 72, and the like are connected to the outer slide mechanism. It can also be used as a drive source for 40. That is, since the drive source of the elevating mechanism 50 and the drive source of the outer slide mechanism 40 can be made common, the vehicle seat device 10 can be reduced in size, weight, and cost.

Further, as shown in FIGS. 6, 7, etc., the rack at the upper end of the lifting rack 56 provided in the movable guide 53 while being held at the same inclination angle as the fixed guide 52 and the movable guide 53 of the guide member 51. The teeth 56 w overlap with the rack teeth 46 w at the front end portion of the fixed rack 46 in the width direction of the seat body 12. Therefore, the pinion 71 can smoothly move between the lifting rack 56 and the fixed rack 46.
Further, the movable guide 53 of the guide member 51 is moved upward from a position continuous with the fixed guide 52 to a position extending along the slide direction by the outer slide member 44 sliding the seat body 12 from the entrance / exit to the vehicle interior. It will be possible to turn. For this reason, the guide member 51 (movable guide 53) does not become an obstacle in the state which stored the seat main body 12 in the vehicle interior.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example in which the pinion 71 on the seat body 12 side is configured to be able to mesh with the lifting rack 56 and the fixed rack 46 has been shown. However, a configuration in which the pinion that meshes with the lifting rack 56 and the pinion that meshes with the fixed rack 46 are formed coaxially and with different diameters and rotated by a single motor is also possible. Thereby, the raising / lowering speed and slide speed can be changed.
Further, a motor 72 of the lifting / lowering slide drive source 70 is installed at the front part of the seat frame 15 of the seat body 12, a pinion 71 is installed at the rear end part of the seat frame 15, and the rotational force of the motor 72 is controlled by the rotation transmission mechanism 75. The example which transmits to the pinion 71 was shown. However, a configuration in which the motor 72 of the lift slide drive source 70 is installed in the vicinity of the pinion 71 located at the rear end of the seat frame 15 is also possible.

DESCRIPTION OF SYMBOLS 10 ... Vehicle seat apparatus 12 ... Seat main body 15 ... Seat frame 35 ... Turning table 40 ... Outer slide mechanism 44 ... Outside Slide member 46w ··· Rack teeth 46 ··· Fixed rack 51 ··· Guide member 52 ··· Fixed guide 53 ··· movable guide 56w ··· Rack teeth 56 ··· .... Elevating rack 70 ... Elevating slide drive source 71 ... Pinion

Claims (4)

A rotary table on which the seat body is placed; and a rotary mechanism that rotates the seat body in a vehicle interior by rotation of the rotary table; and the rotary table, and the seat body is disposed outside the entrance / exit. A vehicular seat device comprising: an outer slide mechanism that slides up to and including an elevating mechanism that is supported by the outer slide mechanism and elevates and lowers the seat body outside the entrance / exit,
The outer slide mechanism is provided on a fixed rack having rack teeth that are fixed on the rotary table and extend in the sliding direction of the seat body, and is slidable along the rack teeth of the fixed rack, and supports the seat body. And an outer slide member that
The elevating mechanism is coupled to an outer slide member of the outer slide mechanism and configured to guide the elevating of the seat body, and an elevating rack provided with rack teeth along the guide member And a pinion provided on the seat body side, meshed with the rack teeth of the lifting rack by rotating by the rotational force of the motor, and configured to be movable along the lifting rack,
The fixed rack of the outer slide mechanism and the lift rack of the lifting mechanism are a state in which the outer slide mechanism slides the seat body to the outside of the entrance / exit, and the pinion on the seat body side is connected to the fixed rack and the lift rack. A vehicle seat device configured to be able to transfer between racks. The vehicle seat device according to claim 1,
The guide member is connected to a fixed guide fixed to the outer slide member of the outer slide mechanism at a predetermined inclination angle, and is connected to a lower end portion of the fixed guide so as to be vertically rotatable via a hinge mechanism, A movable guide provided with a lifting rack, configured to guide the lifting and lowering of the seat body in a state where the movable guide is continuous with the fixed guide,
The movable guide of the guide member is rotatable downward from a position extending along the sliding direction to a position continuous with the fixed guide when the outer slide mechanism slides the seat body to the outside of the entrance / exit. A vehicular seat device characterized by being constituted. A vehicle seat device according to claim 1 or 2, wherein
The pinion is horizontally attached to the seat body such that the axis of the pinion extends in the width direction of the seat body,
Rack teeth are formed on the upper surface side of the fixed rack of the outer slide mechanism,
Rack teeth are formed on the upper surface side of the lifting rack of the lifting mechanism,
With the outer slide mechanism sliding the seat body to the outside of the entrance / exit, the rack teeth at the upper end of the lifting rack overlap with the rack teeth at the tip of the fixed rack in the width direction of the seat body, A vehicle seat device, wherein the pinion is configured to be able to mesh with both the lifting rack and the fixed rack at an overlapping portion. The vehicle seat device according to claim 3,
A vehicle seat device, wherein a front end portion of the fixed rack is formed in a fan-shaped gear shape.

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