JP2003237434A - Vehicular seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology effective in restraining rocking vibration of a seat body upon vehicle traveling in a vehicular seat device for swingably supporting the seat body by a link mechanism. <P>SOLUTION: This seat device has a rotary board 4 for horizontally rotating the seat body between the vehicle front direction and the door opening part direction, a parallel link mechanism 8 for swingably supporting the seat body on the rotary board 4, and a seat rocking stopping mechanism 60 for restraining the rocking of the seat body upon vehicle traveling. The seat rocking stopping mechanism 60 is constituted so as to restrain movement of the seat body in the vertical and lateral direction by inserting a roller 6 arranged in a seat holder 9 of the seat body from the horizontal direction into a U-shaped plate cam 61 fixed to the floor side when rotating the seat body to the vehicle front direction from the door opening part direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device for enabling a physically handicapped person, an elderly person, etc. (hereinafter referred to as an occupant) to easily get in and out of a vehicle.

[0002]

2. Description of the Related Art A vehicle seat device of this type is, for example,
It is described in JP-A No. 11-268564. The vehicle seat device described in the publication can slide the seat body in the vehicle front-rear direction on a vehicle floor via a slide base, and on the slide base via a seat rotation device to the front of the vehicle and the door opening. It is configured such that it can be horizontally rotated between itself and the direction, and can also be moved forward and backward by a vertical swing motion of a four-bar parallel link mechanism on a swing base rotated by a seat rotation device. By moving the seat body forward and backward at a position facing the door opening, the seat body can be moved between the inside and outside of the vehicle. In addition, in this type of vehicle seat device, when the vehicle is traveling, the sliding operation of the slide base with respect to the vehicle floor, the rotation operation of the swing base with respect to the slide base, and the forward / backward movement of the seat body with respect to the swing base,
Each is fixed by a lock mechanism.

[0003]

As described above, in the case of the vehicle seat device of the type in which the seat body is swung by the link mechanism to move between the inside and the outside of the vehicle (including the lifting operation), Seat body (seat holder)
Due to its mechanism, the connecting point between the parallel link and the parallel link is set near the upper part of the backrest portion of the seat holder, and is separated from the seat portion on which the occupant sits. As a result, when the vehicle is running, the seat body may sway in the up-down direction or the left-right direction mainly due to the bending of the seat holder.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a vehicle seat device in which a seat body is supported by a link mechanism, when the vehicle is running. It is to provide an effective technique for preventing the shaking of the main body.

[0005]

In order to achieve the above object, a vehicle seat device according to the present invention has a structure as described in each of the claims. The invention according to each of these claims includes a seat body, a seat rotation device that is provided on the vehicle floor side, and horizontally rotates the seat body between the front of the vehicle and the direction of the door opening, and the seat. And a link mechanism that is provided on a base that is horizontally rotated by a rotating device and supports the seat body. When the seat body faces the door opening, the link mechanism is swung to move the seat body into the vehicle interior. In the vehicle seat device that can be moved between the inside of the vehicle and the outside of the vehicle compartment, this is a technique that can restrain the seat body so that the seat body does not shake when the vehicle travels.

According to the first aspect of the invention, the first engaging body provided on the floor side and the first engaging body provided on the seat body side are engaged with the first engaging body when the seat body is rotated toward the front of the vehicle. By doing so, a seat rocking preventive mechanism including a second engaging body that restrains the vertical and horizontal movements of the seat body and is disengaged when the seat body is rotated toward the door opening is provided. It is characterized by having. Therefore, according to the first aspect of the invention, when the seat body is horizontally rotated toward the front of the vehicle,
The engagement between the engagement body and the second engagement body restrains the vertical movement and the horizontal movement of the seat body. As a result, the seat body is prevented from swaying (feeling like wobbling) during traveling, and the riding comfort is improved.

According to the second aspect of the present invention, the engagement of the second engagement body with the first engagement body is such that one engagement body is laterally inserted into the other engagement body to form a longitudinal engagement surface. It is characterized in that it is configured so that it is pressed and brought into contact with the upper and lower engaging surfaces. By adopting such an engagement mode, it is possible to rationally restrain the movement of the seat body in the up-down direction and the left-right direction, and prevent the sway (feeling of wobbling) during traveling.

In this case, as described in claim 3, the connection point between the seat body and the link mechanism is provided on the rear side of the seat body, and the seat shake preventing mechanism is arranged on the front side of the seat body. It is preferable. According to such a configuration, the seat body is supported on both front and rear sides with the seat portion sandwiched therebetween, so that effective shake prevention is realized.

Further, according to the invention of claim 4, a slide base for supporting the seat rotating device is provided on the floor side so as to be slidable in the vehicle front-rear direction, and the seat body is provided between the slide base and the seat body. When the vehicle is facing the front of the vehicle, the forward movement of the seat body relative to the slide base is restricted while allowing the seat body to rotate toward the door opening, and the seat body slides when the seat body is rotated toward the door opening. The seat lock mechanism is provided for canceling the forward movement restriction with respect to the base, and the seat lock mechanism is provided with the first engagement body and the second engagement body of the seat shake prevention mechanism. That is, in the invention described in claim 4, the seat lock mechanism for restricting the movement of the seat body in the front-rear direction and the seat rocking mechanism for preventing the seat body from swinging in the up-down direction and the left-right direction are respectively provided in the seat body. It is configured to operate based on the rotational movement from the door opening direction toward the front of the vehicle. Therefore, the seat lock mechanism has a first seat shake prevention mechanism.
By providing the engaging body and the second engaging body, it is possible to reduce the number of parts or save space in arrangement as compared with a case where both mechanisms are individually provided.

In a fifth aspect of the present invention, the first engaging body of the seat rocking preventive mechanism has a plate having upper and lower plate portions facing each other at a predetermined interval and a vertical plate portion located between the upper and lower plate portions. The second engagement body is formed of a cam, and the second engagement body is formed of an engagement member that comes into contact with the upper and lower plate portions and the vertical plate portion when inserted into the plate cam. Therefore, according to the invention described in claim 5, it is possible to provide a seat shake preventing mechanism having a simple structure.

According to the sixth aspect of the invention, the plate cam has an inclined plate portion for guiding between the upper and lower plate portions while pushing up or pushing down the engaging member inserted toward the plate cam. It has a feature. When the occupant is seated on the seat, the seat body bends downward with the weight of the occupant as a fulcrum at the connection point with the link mechanism, and the amount of deflection at this time corresponds to the weight. Then, the engagement member is also displaced downward due to the bending of the seat holder. Therefore, according to the invention described in claim 6, even if the position of the seat body varies in the vertical direction due to the bending, the engaging member moves downward or upward along the upper or lower guide plate portion. By moving, it is possible to absorb variations in the vertical position of the seat body.

In this case, as described in claim 7, the engaging member and the plate cam are such that when the load within a certain width is applied to the seat body, the engaging member is the guide plate portion. It is preferable that the relative position in the vertical direction is adjusted so as to enter between the upper and lower plate portions without contacting with. When such a configuration is adopted, when an occupant having a weight corresponding to the above load (for example, 60 to 70 kg) is seated on the seat body, the engaging member moves up and down without contacting the guide plate portion of the plate cam. By entering between the plate portions, the shock at the time of engagement can be eliminated or reduced.

The invention according to claim 8 is characterized in that the vertical plate portion of the plate cam is provided with an elastically deformable cushion body against which the engaging member is pressed. According to this, the stop shock at the moving end of the engaging member inserted into the plate cam can be alleviated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
~ It demonstrates based on FIG. The vehicle seat device according to the present embodiment performs three types of operations on the seat body: a slide operation in the vehicle front-rear direction, a horizontal rotation operation, and an advancing / retreating operation via a four-bar parallel link mechanism. This is a seat device of the type in which the seat body can be moved between the vehicle interior and the vehicle exterior by allowing the seat body to be moved. In the following description, this type of vehicle seat device is referred to as a swing-out type seat device. Here, FIG. 1 is a schematic plan view of a vehicle equipped with a swing-out type seat device, and FIGS. 2 and 3 are side views of the swing-out type seat device according to the present embodiment. FIG. 4 is a perspective view of the swing-out type seat device, and FIG. 5 is an enlarged view of part A of FIG.
FIG. 6 is a side view of FIG. FIG. 7 is an enlarged view of part B of FIG.
8 is a view taken in the direction of arrow C in FIG. 7, and FIG. 9 is a sectional view taken along the line DD in FIG. In the figure, arrow FR indicates the front of the vehicle, arrow UPR indicates the upper side of the vehicle, and arrow LH indicates the left side of the vehicle.

As shown in FIG. 1, in this embodiment, a seat device 1 set on the left side of the vehicle is illustrated. Therefore, in the vehicle, the door opening D is provided on the left side of the seat device 1.
Is provided, and the seat body 11 slides forward from the traveling position facing the front of the vehicle shown by the solid line in the figure,
When it is horizontally rotated counterclockwise by 0 °, as shown by the chain double-dashed line in the figure, it becomes a boarding / alighting position facing the door opening D and facing the door opening D. At this position, the seat main body 11 is passed through the door opening D. It is possible to move back and forth between the inside and outside of the vehicle.

Details of the seat device 1 are shown in FIGS. 2 and 3.
Is shown in. In the present embodiment, the basic configuration of the seat device 1 does not need to be changed, but will be briefly described below. On the vehicle floor F, rails 2 for sliding in the front-rear direction extending in parallel to each other along the front-rear direction of the vehicle.
Is laid, and a slide base 3 is provided via the rail 2 so as to be slidable in the vehicle front-rear direction. On the slide base 3, there is attached a turntable 4 which is concentrically arranged and is relatively rotatable via a plurality of balls (not shown). The turntable 4 includes an outer ring 4a and an inner ring 4b. The turntable 4 is attached to a position deviated from the center of the slide base 3 (a position deviated to the front side of the drawing in FIG. 2) (see FIG. 4). This is set for the purpose of bringing the seat body 11 closer to the door opening D side when the seat body 11 is rotated toward the door opening D. The outer ring 4a of the turntable 4 is fixed on the slide base 3, and the swing base 7 (corresponding to the base in the present invention) is attached on the inner ring 4b. Although not shown, the inner ring 4b is configured to be rotated by a drive device having an electric motor with a speed reducer as a drive source.
The above-described rotating disc 4 and its driving device constitute a seat rotating device in the present invention.

A seat holder 9 is arranged above the swing base 7, and the seat holder 9 is a pair of left and right (in FIGS. 2 and 3, a pair in the direction orthogonal to the paper) four-section parallel link mechanism 8 ( It corresponds to the link mechanism referred to in the present invention). The left and right two link arms 8a and 8b forming the four-bar parallel link mechanism 8 are rotatably connected to the swing base 7 and the seat holder 9 via support shafts 8c, 8d, 8e, and 8f, respectively. As shown in FIG. 4, the seat holder 9 has a back frame portion 9b corresponding to a backrest portion and a cushion frame portion 9a corresponding to a seat portion. The left and right frames are substantially L-shaped in a side view. The seat 10 is attached to the seat holder 9. The seat holder 9 and the seat 10 supported by the seat holder 9 correspond to the seat body 11 in the present invention.

Although not shown, the four-bar parallel link mechanism 8 is operated by rotating a drive arm fixed to a rear support shaft 8d using an electric cylinder installed on the swing base 7 as a drive source. It As a result, the link arms 8a and 8b forming the four-bar parallel link mechanism 8 swing in the vertical direction, and the swing motion causes the seat body 11 to move to the retracted position (the position shown in FIG. 2) approaching the swing base 7. , And moves forward and backward with respect to an advance position (a position shown by a solid line in FIG. 3) separated from the swing base 7. The electric cylinder as a drive source is mainly composed of an electric motor, a ball screw, and a nut screwed to the ball screw, and the ball screw and the nut constitute a reduction mechanism. A sheet moving device is configured by the above-described four-bar parallel link mechanism 8 and an electric cylinder as a drive device thereof.

The sliding movement of the seat body 11 in the vehicle front-rear direction is configured to be performed manually by a user or electrically by using an electric motor as a drive source. This forward-backward sliding operation can be locked at a front end position and a rear end position in the sliding direction or any position in the middle by a slide lock mechanism (not shown). Also, the horizontal rotation operation by the turntable 4 can be locked at a position where the seat body 11 faces the front of the vehicle and a position where the seat body 11 faces the door opening D, respectively.

According to this structure, the slide base 3 is slid forward of the vehicle to move the seat body 11 to a position corresponding to the door opening D, and then the swing base 7 is horizontally rotated by about 90 °. When the seat body 11 is directed toward the door opening D and the electric motor is operated in that state to swing the four-bar parallel link mechanism 8 toward the outside of the vehicle, as shown by the solid line in FIG. The seat body 11 can be lowered while moving from the door opening D to the outside. As a result, the occupant receives the seat 10
You can get out of the room while sitting on the. On the contrary, the electric cylinder is operated in the opposite direction, and the four-bar parallel link mechanism 8 is swung to the standing side as shown by the chain double-dashed line in FIG. 3, and then the swing base 7 is horizontally rotated by about 90 °. If the slide base 3 is slid rearward of the vehicle after the seat body 11 is turned to the front of the vehicle, the seat body 1
1 is returned to its original position in the room shown by the solid line in FIG. As a result, the occupant can get into the room while sitting on the seat 10.

In the seat device 1 configured and operated as described above, the seat body 11 is provided with the buckle 32 (seat belt component) for mounting the seat belt 31 for protecting the occupant. Therefore, when the vehicle decelerates suddenly, the seat belt 31
There is a possibility that a shocking load (an external force directed obliquely upward) may be input from the through the buckle 32. In the seat device 1 according to the present embodiment, in order to prevent the seat body 11 from moving due to the input load from the seat belt 31, the swing base 7, the seat body 11, specifically, the seat 1 are used.
A seat lock mechanism 20 is provided between the seat holder 9 and the seat holder 9 on which 0 is placed. The movement of the seat body 11 due to the input load from the seat belt 31 refers to a case where the seat body 11 moves forward due to deformation or extension of the four-bar parallel link mechanism 8, and the four-bar parallel link mechanism. 8 It does not mean the swing motion of itself. That is, the drive device of the four-bar parallel link mechanism 8 has a speed reducer (ball screw and nut), and the speed reducer opposes the above-mentioned input load and prevents the swing motion of the four-bar parallel link mechanism 8. . In the following description, the movement of the seat body 11 due to the swing motion of the four-bar parallel link mechanism 8 is referred to as a normal movement, and the movement of the seat body 11 due to an input load from the seat belt 31 is referred to as an illegal movement.

The seat lock mechanism 20 includes a hook-shaped engaging portion 21 (first lock member) provided on the side plate portion 7a of the swing base 7 and a lock pin 2 provided on the cushion frame portion 9a of the seat holder 9.
2 (second lock member) and two members,
The buckle 32 for wearing the seat belt is arranged on the mounting portion side. In the present embodiment, the seat device 1 is provided on the left side of the vehicle.
Therefore, the buckle 32 is attached to one of the left and right side portions of the seat body 11, that is, the right side portion of the seat holder 9. An engaging portion 21 is provided at the front end portion of the side plate portion 7 a of the swing base 7, and the engaging portion 21
A notch 7b having an open front is formed below the.
Correspondingly, the lock pin 22 is provided on the cushion frame portion 9a of the seat holder 9 facing the outer surface side of the side plate portion 7a of the swing base 7. The lock pin 22 is provided so as to project from the attachment portion of the buckle 32 attached to the cushion frame portion 9a and extends so as to cross the side plate portion 7a of the swing base 7, and the four-bar parallel link mechanism 8 is provided. It is arranged so as to enter the notch 7b of the side plate portion 7a in the standing state.

The engaging portion 21 is located outside the locus L (see FIG. 6) of the lock pin 22 relative to the swing base 7 when the seat body 11 is moved forward and backward by the swing movement of the four-bar parallel link mechanism 8. The lock pin 2 for the swing base 7 when the seat body 11 is illegally moved due to an input load from the seat belt 31 or the like
It is provided on the movement locus of 2. Then, the engaging portion 21
A guide surface 7c extending obliquely upward and forward of the vehicle is formed at the lower edge of the base end portion 211 of the front end portion 2 of the engaging portion 21.
The end of 12 is folded back downward, and the engaging portion 21 is formed in a hook shape as a whole. In particular, the tip end portion 212 of the engaging portion 21 is the swing base 7 when the seat body 11 is improperly moved by an input load from the seat belt 31.
It is provided on the movement locus L ′ of the lock pin 22 with respect to. The inclination direction of the guide surface 7c is the seat belt 3
It corresponds to the input direction of the load input from 1 to the seat body 11 via the buckle 32 (the P arrow direction shown in FIG. 6).

That is, in the seat lock mechanism 20, when a shocking load is input from the seat belt 31 to the seat body 11 via the buckle 32 and the seat body 11 is moved in the load input direction by the load, the engaging portion is engaged. The lock pin 22 is engaged with the lock body 21 to prevent the seat body 11 from being illegally moved. In the present embodiment, the lock pin 22 is fixed to the cushion frame portion 9a of the seat holder 9 at two positions in the axial direction on the base side (mounting side) thereof, so that the mounting strength is reinforced, Further, the bending strength is reinforced by the reinforcing plate 23 attached to the front side along the axial direction. That is, the seat lock mechanism 20 is configured to have a strength to withstand an impact load applied from the seat belt 31 to the seat body 11.

The seat lock mechanism 20 according to the present embodiment
Is configured as described above. Therefore, when the seat main body 11 is moved forward or backward by the four-bar parallel link mechanism 8 from the position where the seat main body 11 faces the door opening D, the lock pin 2 provided on the seat holder 9 side.
2 enters and exits the notch 7b without interfering with the engaging portion 21 provided on the swing base 7 side. That is,
Since the hook-shaped engaging portion 21 that constitutes one of the locking members of the seat lock mechanism 20 is provided at a position deviated from the movement locus L of the lock pin 22, the locking is performed during the normal forward / backward movement of the seat body 11. Allow the pin 22 to move.

On the other hand, when the vehicle is running, a shocking load is input to the seat body 11 from the seat belt 31 via the buckle 32 due to, for example, a sudden deceleration of the vehicle, and the load causes a four-bar parallel link mechanism. When the seat main body 11 moves toward the load input direction due to deformation of No. 8 or the like, the lock pin 22 contacts the guide surface 7c to restrict the upward movement, and the engaging portion 21 moves. Tip 2
The forward movement is restricted by engaging with 12. As a result, it is possible to prevent a large unauthorized movement of the seat body 11 obliquely upward and forward (see the chain double-dashed line in FIG. 6).
The load input via the seat belt 31 acts as a force for swinging the four-bar parallel link mechanism 8 supporting the seat body 11 forward, but as described above, the deceleration of the four-bar parallel link mechanism 8 is performed. The device opposes the load, and the swing motion of the four-bar parallel link mechanism 8 is blocked.

Further, in the present embodiment, since the seat lock mechanism 20 is provided on the attachment portion side of the buckle 32, the seat lock mechanism 20 works close to the input load, which is effective. You can get the lock function. In the present embodiment, when an impact load is applied to the seat body 11 from the rear of the vehicle, the lock pin 22 is engaged with the rear edge portion 7d of the cutout 7b, It is possible to prevent the seat body 11 from moving backward.

As described above, in the seat lock mechanism 20 according to the present embodiment, the direction of movement of the lock pin 22 with respect to the swing base 7 when the seat body 11 moves forward and backward, and the seat belt 11 is input to the seat body 11. Utilizing the fact that the moving direction of the lock pin 22 with respect to the swing base 7 when the seat body 11 is moved with a predetermined load is different from that of the lock pin 22, the lock pin 22 is not engaged during the forward / backward movement of the seat body 11 to move normally, and a shocking load is applied. The hook-shaped engaging portion 21 is formed so as to be engaged when it is illegally moved. Therefore, according to the present embodiment, it becomes possible to configure the seat lock mechanism 20 with two members, that is, the engaging portion 21 and the lock pin 22, and it is necessary to unlock the seat main body 11 when the seat body 11 is moved forward and backward. As compared with the lock device, the number of parts is reduced, the structure is simplified, and the cost is reduced or the weight is reduced. Further, with respect to the forward / backward movement in which the seat body 11 is normally moved, the lock pin 22 is allowed to move, and the shape of the notch 7b can be set to be sufficiently large. It is possible to improve the assemblability without needing to do it.

Further, the seat device 1 according to the present embodiment
As shown in FIG. 4, the seat lock mechanism 20 described above is used.
Separately from the above, a base lock mechanism 40 for preventing the swing base 7 from rising and a second seat lock mechanism 50 for preventing the movement of the seat holder 9 when the seat body 11 is illegally moved are provided. There is.

The base lock mechanism 40 is composed of a hook member 41 provided on the upper surface of the rear end of the slide base 3 and a lock hole 42 formed in the swing base 7. The hook member 41 is erected so as not to interfere with the horizontal rotating operation of the swing base 7, and the hook portion 41 a that extends around the rear end upper surface of the swing base 7 at the traveling position and faces the lock hole 42 at its tip. Is equipped with.
The hook portions 41a are preferably arranged as close as possible within a range that does not hinder the horizontal rotation operation of the swing base 7. Therefore, according to the base lock mechanism 40, for example, when the vehicle rapidly decelerates, the seat belt 31
In the case where a shocking load is input to the seat body 11 via the buckle 32, and the load is further input to the swing base 7 via the four-bar parallel link mechanism 8,
When the swing base 7 moves upward due to the above load, the lock hole 42 of the swing base 7 fits into the hook portion 41a of the hook member 41. This allows the swing base 7
Can be prevented from moving upward.

Next, the second seat lock mechanism 50 is provided at the front end of the seat holder 9 and the lock plate 51 having the lock hole 51a provided at the front end of the slide base 3. It is composed of a U-shaped hook 52. The lock plate 51 is welded or fixed to the slide base 3 with bolts, nuts or the like. Further, the hook 52 is formed in a substantially U-shape, and the upper piece portion 52a as a mounting portion uses a bolt 92 on a tie bar 91 that connects the front end portions of the cushion frame portions 9a of the left and right sea frames forming the seat holder 9 to each other. It is fixed. The lock hole 51a of the lock plate 51 is a rectangular hole penetrating in the vehicle width direction, and the lower piece portion 52b as the lock portion of the hook 52 is based on the horizontal rotation operation of the seat body 11 with respect to the lock hole 51a. It is possible to engage / disengage from the lateral direction.

Hook 5 attached to the seat holder 9
2 is a lower piece 5 when the seat body 11 is horizontally rotated from the position facing the door opening to the position facing the vehicle front.
2b is laterally inserted into the lock hole 51a of the lock plate 51. Therefore, the hook 52 is locked in the lock hole 5.
In the state of being inserted into the la 1a, the movement of the seat body 11 with respect to the slide base 3 is restricted in the directions other than the inserting direction. Therefore, it is possible to prevent the seat holder 9 from moving forward with respect to the slide base 3 when an impact load is applied to the seat body 11 due to, for example, sudden vehicle deceleration. On the other hand, when the seat body 11 is rotationally operated from the position facing the vehicle front to the position facing the door opening, the lower piece portion 52 of the hook 52 is
b is pulled out from the lock hole 51a of the lock plate 51. As a result, the seat body 1 with respect to the slide base 3
The movement restriction of 1 is released, and the forward / backward movement of the seat body 11 by the swing movement of the four-bar parallel link mechanism 8 is allowed.

By the way, in the case of the swing-out type seat device 1 in which the seat body 11 is moved between the vehicle interior and the vehicle exterior by the swing operation of the four-bar parallel link mechanism 8, the four-bar parallel link mechanism 8 and the seat body 11 are connected. As shown in FIGS. 2 and 3, the connecting point is set on the back frame portion 9b of the seat holder 9 and is separated from the seat portion of the seat 10 on which the occupant sits. Therefore, when the vehicle is traveling, the seat body 11 may shake (fluffy feeling) in the vertical direction or the horizontal direction due to the bending of the seat holder 9.

In view of this, the seat device 1 according to the present embodiment is a seat that prevents the seat body 11 from swinging in the vertical direction and the horizontal direction when the seat body 11 is horizontally rotated toward the front of the vehicle. A shake prevention mechanism 60 is provided. Hereinafter, the seat shake preventing mechanism 60 will be described mainly with reference to FIGS. 7 to 9.

The seat shake prevention mechanism 6 according to the present embodiment
0 is provided in a mode that uses the second seat lock mechanism 50 described above. That is, the seat shake preventing mechanism 60 is attached to the plate cam 61 provided on the floor side, the hook 52 which is a constituent member of the second seat lock mechanism 50 provided on the seat body 11 side, and the hook 52 thereof. The roller 62 is made of resin.
The plate cam 61 is welded to the back side of the lock plate 51, which is a component of the second seat lock mechanism 50, in the hook insertion direction.
2 can be engaged or disengaged via a roller 62. Thus, in the present embodiment, the hook 5
2 is used as both the constituent member of the second seat lock mechanism 50 and the constituent member of the seat shake preventing mechanism 60. The roller 62 is the lower piece 5 of the hook 52.
It is attached to the tip of 2b (the end inserted into the lock hole 51a) with a stepped pin 63, and is provided for smoothing the engaging operation with the plate cam 61. The plate cam 61 corresponds to the first engaging body in the present invention, and the hook 5
2 and the roller 62 correspond to the second engagement body in the present invention.

As shown in FIGS. 7 and 8, the plate cam 61 is formed in a substantially U-shape having an opening on the side facing the roller 62. That is, the plate cam 61 is formed by bending one iron plate, and the upper plate portion 61a and the lower plate portion 61b (corresponding to the upper and lower engaging surfaces in the present invention) and the vertical plate portion 61c which face each other. Upper and lower inclined plate portions that have (corresponding to the vertically-oriented engagement surface in the present invention) and extend outwardly from the end portions of the upper plate portion 61a and the lower plate portion 61b so as to spread outward. It has 61d and 61e (corresponding to the upper and lower guide plate portions in the present invention). And
The ends of the inclined plate portions 61d and 61e are welded to the back surface of the lock plate 51. An elastically deformable cushion rubber 64 (corresponding to the cushion body in the present invention) is fixed to the inner surface of the vertical plate portion 61c with a screw 65.

On the other hand, as shown in FIG. 9, the roller 62 is rotatably attached to the lower piece portion 52b, which is the insertion end portion of the hook 52, by using a stepped pin 63 having a screw formed on the small diameter portion on the front end side. It is installed. Then, when the seat body 11 is rotated from the position facing the door opening to the position facing the vehicle front, the upper and lower inclined plate portions 61 of the plate cam 61 from the lateral direction.
It is inserted between the upper and lower plate portions 61a and 61b passing through d and 61e, pressed against the cushion rubber 64, and is stored in a state where the cushion rubber 64 is bent by a certain amount. In FIG. 9, the movement locus of the roller 62 is indicated by the reference symbol L1. The pressing force of the roller 62 is given from the drive source of the rotation drive device that rotates the sheet body 11. The rollers 62 are the upper and lower plate portions 61.
By contacting a and 61b, the vertical movement is restrained, and by being pressed against the cushion rubber 64, the horizontal movement is restrained.

As described above, according to the seat shake preventing mechanism 60 of the present embodiment, when the seat body 11 is horizontally rotated from the door opening direction toward the front of the vehicle, the roller 62 is moved into the plate cam 61. By being stored in contact,
The movement of the seat body 11 can be restrained via the hook 52. For this reason, the seat body 11 whose rear side is supported by the four-bar parallel link mechanism 8 with the seat portion sandwiched therebetween and whose front side is restrained by the seat anti-sway mechanism 60 is swayed in the vertical direction and the horizontal direction during vehicle traveling. It can be effectively prevented or reduced, and the riding comfort can be improved.

By the way, when an occupant is seated on the seat 10, the seat holder 9 bends in accordance with the weight, and the seat body 11 is displaced downward. Along with that, the seat body 1
Similarly, the positions of the hook 52 and the roller 62 provided in No. 1 are also displaced downward, and this displacement state is shown in FIG.
Is shown in. In FIG. 8, (A) position is seat 1
When there is no occupant in 0, (B) position is 60-7
The figure shows a case where an occupant with a standard weight of 0 kg is seated and a case where the occupant whose position (C) is 100 kg is seated. That is, in the present embodiment, considering that the vertical position of the roller 62 varies due to the bending of the seat holder 9 when a load is applied to the seat body 11, the roller when the occupant of a standard weight is seated 62 is flush with the plate cam 61, that is, the roller 62 is
The relative position between the plate cam 61 and the roller 62 is determined so as to be an intermediate position between the upper plate portion 61a and the lower plate portion 61b.

Therefore, when the occupant is lighter in weight than the standard weight, including when the seat is empty, the roller 62 rolls along the lower surface of the upper inclined plate portion 61d,
Further, when the weight is higher than the standard weight, the roller 62 rolls on the upper surface of the lower inclined plate portion 61e and is guided between the upper plate portion 61a and the lower plate portion 61b. It As a result, the seat body 11 absorbs the vertical displacement in a mode in which the seat holder 9 is bent when the seat body 9 is lightweight, including an empty seat, and in a mode in which the seat holder 9 is bent when the seat body 11 is heavy. That is, it is possible to absorb the variation in the vertical position of the seat body 11 due to the bending of the seat holder 9 when a load is applied to the seat body 11. On the other hand, when the occupant of standard weight is on the seat 10, the roller 62 is inserted into the plate cam 61 without touching the inclined plate portions 61d and 61e, so that the plate cam 61 and the roller 62 are engaged with each other. It is possible to prevent or reduce the occurrence of shock. Further, since the cushion rubber 64 receives the roller 62 at the entrance end of the roller 62, the shock at the entrance end can be alleviated.

Further, in the present embodiment, the plate cam 61 and the roller 62, which are the constituent members of the seat shake prevention mechanism 60, are attached to the lock plate 51 and the hook 52, which are the constituent members of the seat lock mechanism 50. As a result, it is possible to reduce the number of parts or save space in arrangement, as compared with a case where both mechanisms are individually provided. In addition, since the sheet cam 61 and the roller 62 constitute the sheet anti-sway mechanism 60, the anti-sway of the seat body 11 can be realized with a simple structure.

The present invention is not limited to the above-described embodiments, but can be modified as appropriate without departing from the spirit of the invention. For example, in the above-described embodiment, the seat shake prevention mechanism 60 is formed in a mode that uses the constituent members of the second seat lock mechanism 50, but the configuration is changed to a configuration that is provided independently of the second seat lock mechanism 50. May be. In the embodiment, the hook 52 and the roller 62 form the second engaging body.
The engaging body is not necessarily required to rotate, and may be composed of a non-rotating member. Therefore, the roller 62 may not be provided, for example, only the hook 52 may be provided. In short, when the second engaging body is inserted into the plate cam 61 as the first engaging body, the second engaging body engages with the upper and lower plate portions 61a and 61b and the vertical plate portion 61c of the plate cam 61 so as to contact with each other. It suffices if it is configured by an engaging member that can be used. Further, the mounting positions of the plate cam 61 and the roller 62 may be reversed, that is, the plate cam 61 may be provided on the seat body 11 and the roller 62 may be provided on the slide base 3 on the floor side. In addition, in the embodiment, the seat body 11 is caused to perform three kinds of operations, that is, a sliding operation in the vehicle front-rear direction, a horizontal rotating operation, and an advancing / retreating operation via the four-bar parallel link mechanism 8. ,
The seat body 11 is applied to a seat device of a type that can be moved between the vehicle interior and the vehicle exterior. Among the above three operations, the seat body 11 is horizontally rotated and the four-bar parallel link mechanism 8 is used. The present invention can be applied to any vehicle seat device in which the seat body 11 can be moved between the inside of the vehicle and the outside of the vehicle by performing two types of movements, the forward and backward movements.

[0043]

As described in detail above, according to the present invention,
In the vehicle seat device in which the seat body is supported by the link mechanism, it is possible to provide an effective technique for preventing the seat body from shaking when the vehicle is traveling.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a vehicle including a swing-out type seat device.

FIG. 2 is a side view of the swing-out type seat device according to the present embodiment.

FIG. 3 is a side view of the swing-out type seat device, showing an advancing / retreating operation.

FIG. 4 is a perspective view of a swing-out type seat device.

5 is an enlarged view of part A in FIG.

FIG. 6 is a side view of FIG.

7 is an enlarged view of part B in FIG.

8 is a view on arrow C of FIG. 7. FIG.

9 is a sectional view taken along line DD of FIG.

[Explanation of symbols]

1 ... Sheet device 4 ... Rotating disk (seat rotating device) 7 ... Swing base 8 ... Four-bar parallel link mechanism 9 ... Sheet holder 10 ... Sheet 11 ... Sheet body 50 ... Second seat lock mechanism 52 ... Hook (second engaging body) 60 ... Seat sway prevention mechanism 61 ... Plate cam (first engaging body) 61a ... Upper plate (upper engagement surface) 61b ... Lower plate portion (lower engaging surface) 61c ... Vertical plate portion (longitudinal engagement surface) 61d, 61e ... Upper and lower inclined plate portions (upper and lower guide plate portions) 62 ... Roller (second engaging body) D ... Door opening F: Vehicle floor

Claims (8)

[Claims] 1. A seat body, a seat rotation device provided on a vehicle floor side for horizontally rotating the seat body between a front direction of a vehicle and a direction of a door opening, and a horizontal rotation by the seat rotation device. A link mechanism that is provided on a base that supports the seat body, and when the seat body faces the door opening, the link mechanism is swung to move the seat body to the interior of the vehicle. A vehicle seat device that can be moved to and from the outside of a vehicle, wherein a first engagement body provided on the floor side and a seat body side is provided, and the seat body is rotated in a front direction of the vehicle. When the seat body is rotated toward the door opening, the seat body is prevented from moving in the vertical and horizontal directions by engaging with the first engaging body. A seat apparatus for a vehicle, characterized in that it comprises a sheet snubber mechanism composed of the second engagement body engagement is released. 2. The vehicle seat device according to claim 1, wherein when engaging the first engaging body and the second engaging body, one engaging body is laterally inserted into the other engaging body. The seat device for a vehicle is configured so as to be pressed against a vertically oriented engaging surface and to be brought into contact with an engaging surface at a vertical position. 3. The vehicle seat device according to claim 1, wherein a connecting point of the seat body and the link mechanism is provided on a rear side of the seat body, and the seat shake preventing mechanism is a seat. A vehicle seat device arranged on the front side of a main body. 4. The vehicle seat device according to claim 1, wherein a slide base that supports the seat rotation device is provided on the floor side so as to be slidable in the vehicle front-rear direction. Between the seat body and the seat body, when the seat body faces the front of the vehicle, the forward movement of the seat body relative to the slide base is restricted while allowing the seat body to rotate toward the door opening. The seat lock mechanism includes a seat lock mechanism that releases the forward movement restriction of the seat body with respect to the slide base when the seat lock mechanism is rotated toward the door opening. A vehicle seat device comprising a second engagement body. 5. The vehicle seat device according to claim 1, wherein the first engagement body of the seat anti-sway mechanism has upper and lower plate portions facing each other at a predetermined interval, and the upper and lower plate portions. The second engagement body is constituted by a plate cam having a vertical plate portion located between the plate portions, and the second engagement body is formed by an engagement member that contacts the upper and lower plate portions and the vertical plate portion when inserted into the plate cam. A vehicle seat device having a structure. 6. The vehicle seat device according to claim 5, wherein the plate cam is an inclination that pushes up or pushes down the engagement member inserted toward the plate cam to guide it between upper and lower plate portions. A vehicle seat device having a plate portion. 7. The vehicle seat apparatus according to claim 6, wherein the engagement member and the plate cam are engaged with each other when a load within a certain width is applied to the seat body. A vehicle seat device, wherein a relative position in the vertical direction is adjusted so that the coupling member enters between the upper and lower plate portions without contacting the guide plate portion. 8. The vehicle seat device according to claim 5, wherein the vertical plate portion of the plate cam is provided with an elastically deformable cushion body against which the engaging member is pressed. A vehicle seat device characterized by the above.