JP2010089741A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat device for a vehicle for obtaining stable advancing/retreating operation of a seat body by certainly preventing clamping of a foreign matter in a clearance of a guide roller and a guide groove. <P>SOLUTION: The guide groove 41 is formed on a side part frame 36 of the seat body, and the guide roller 40 rolling along a guide surface in the guide groove 41 is provided on a base member. A roller cover 45 for covering a front side in a rolling direction of an outer peripheral surface of the guide roller 40 in the guide groove 41 is provided on the base member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat device that can be moved back and forth through the opening of a vehicle body into and out of a vehicle interior.

2. Description of the Related Art As a seat device used for a welfare vehicle or the like, a seat device on which an occupant is seated can be moved forward and backward through the opening (door opening) of a vehicle body (see, for example, Patent Document 1). ).
In this seat device, a seat body is attached to a base member supported on a vehicle body floor via a rotation mechanism so that the seat body can move forward and backward via an advance / retreat actuator and a guide mechanism. When the seat body is pushed out from the opening of the vehicle body to the outside of the vehicle, the seat body is rotated by rotating the base member toward the opening of the vehicle body and operating the advance / retreat actuator in that state. Move to the outside of the car.
Further, the guide mechanism of the seat device includes a guide plate that is fixedly installed on the inner side in the vehicle width direction of the side frame of the seat cushion, and a guide roller that is rotatably supported by the base member, and is formed on the guide plate. A guide roller is rotatably engaged with the guide groove. The guide plate and the guide roller are disposed below a seat cushion seat where an occupant sits, and guide the behavior of the seat body when the seat body is moved back and forth by an advance / retreat actuator.
JP 2008-126692 A

  However, in this conventional sheet apparatus, since the guide roller is configured to roll in the guide groove, foreign matter can be caught in an acute gap formed between the outer peripheral surface of the guide roller and the guide groove. Sex is conceivable.

  Therefore, the present invention is intended to provide a vehicle seat device capable of reliably preventing foreign matter from being caught in the gap between the guide roller and the guide groove and obtaining a stable advance / retreat operation of the seat body. It is.

The invention according to claim 1, which solves the above problem, is a seat main body (for example, a seat main body 10 in an embodiment described later) on which an occupant is seated, and a seat body that is installed in a vehicle interior. For example, a base member (for example, a front / rear slide mechanism 11A, a rotation mechanism 11B, a turn table 21, a guide block 28 in an embodiment described later) is supported through a door opening 1 in an embodiment described later so as to be movable forward and backward. , A guide rail 29, a slide block 30), and a guide mechanism (for example, a guide mechanism 26 in an embodiment described later) for guiding the behavior of the seat body when the seat body is moved forward and backward. In the vehicle seat apparatus, the guide mechanism is provided with a guide groove (for example, provided in the seat body along an advancing / retreating direction). For example, a guide groove 41 in an embodiment described later) and a guide roller (for example, described later) that is rotatably provided in the base member and rolls along the guide surface of the guide groove when the seat body is advanced or retracted. Guide roller 40) in the embodiment, and a roller cover provided on the base member and covering the front side in the rolling direction of the outer peripheral surface of the guide roller in the guide groove (for example, a roller cover 45 in the embodiment described later) It is characterized by comprising.
Thus, when the seat body moves forward and backward through the opening of the vehicle body, the behavior of the seat body is guided by the guide roller rolling in the guide groove of the side frame. At this time, since the front side in the rolling direction of the outer peripheral surface of the guide roller is covered with the roller cover, no foreign matter is caught in the gap between the outer peripheral surface of the guide roller and the guide groove.

According to a second aspect of the present invention, in the vehicle seat device according to the first aspect, the guide groove is formed in a side frame (for example, a side frame 36 in an embodiment described later) of the seat body, The roller cover is provided with extending pieces (for example, upper extending pieces 48 and 50 and a lower extending piece 49 in an embodiment described later) extending in a direction facing the side edge of the guide groove. Features.
As a result, entry of foreign matter from the side edge portion of the guide groove is blocked by the extending piece, and the extending piece functions as a guide for restricting the lateral frame shake of the side frame.

  According to the invention described in claim 1, in order to cover the front side of the outer peripheral surface of the guide roller in the rolling direction with the roller cover, the roller cover prevents foreign matter from being caught in the gap between the guide roller and the guide groove, A stable advance / retreat operation of the seat body can be obtained at any time.

  According to the second aspect of the present invention, since the roller cover is provided with the extending piece extending in the direction facing the side edge of the guide groove, the extension piece prevents the foreign matter from the side edge of the guide groove. In addition to being able to prevent entry, it is possible to stabilize the operation of the seat main body by restricting the deflection in the width direction of the side frame by the extending piece.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view when the inside of a vehicle is viewed through a door opening 1 (opening) on the passenger seat side, in which 2 is a seat device to which the present invention is applied, It is a side center pillar. The seat device 2 of this embodiment is used in a welfare vehicle that can move in and out of the passenger compartment while an occupant is seated.
The seat device 2 is disposed below the seat cushion 4A in an initial position, and the seat body 10 is electrically driven on a predetermined track by a seat body 10 in which a seat back 4B is tiltably connected to a rear end portion of the seat cushion 4A. And a movable mechanism 11 to be operated.

2A, 2 </ b> B, and 2 </ b> C sequentially show states when the sheet apparatus 2 is electrically operated by the movable mechanism 11. FIG. 1 shows an initial state in which the seat body 10 faces the front of the vehicle at a predetermined position on the rear side in the vehicle compartment.
First, the basic movement of the seat device 2 will be described.
In the case where the seat body 10 is moved to the outside of the vehicle through the door opening 1 from the initial state shown in FIG. 1, the seat device 2 first moves the seat body 10 to the vehicle as shown in FIG. While being slid forward, it is rotated toward the door opening 1 side. At this time, the sheet body 10 is rotated while moving forward in order to prevent interference between the sheet body 10 and the center pillar 3.
When the seat body 10 is rotated 90 ° in the direction of the door opening 1 as shown in FIG. 2B, the seat body 10 is then moved from the door opening 1 as shown in FIG. Move forward so that it protrudes diagonally downward from the outside of the car. As a result, the seating portion of the seat body 10 moves forward to a sufficiently low position on the outside of the vehicle, and at this point, the passenger can get off the seat body 10.
Further, when returning the seat main body 10 squeezed to the outside of the vehicle to the initial position in the vehicle interior, the seat main body 10 is operated in the reverse order in the reverse order.

FIG. 3 shows a schematic configuration of the movable mechanism 11 of the sheet apparatus 2.
The movable mechanism 11 includes a front / rear slide mechanism 11A installed on the floor 12 in the vehicle interior, a rotation mechanism 11B attached to the front / rear slide mechanism 11A, and the rotation mechanism 11B. And a projecting slide mechanism 11C that directly supports 10.

  The front / rear slide mechanism 11A includes a pair of guide rails 13 fixedly installed on the floor 12 along the longitudinal direction of the vehicle body, a pair of sliders 14 engaged with the respective guide rails 13 so as to be able to slide back and forth, and the pair of slide rails. A support plate 15 having sliders 14 fixed to both sides thereof, and a drive unit 16 for moving the support plate 15 forward and backward in the vehicle longitudinal direction with respect to the floor 12 are provided.

The pair of guide rails 13 are disposed below both side portions of the seat body 10 at the initial position. Further, the slider 14 includes a guide roller 17 accommodated in a groove of the guide rail 13 so as to be able to roll, and the guide roller 17 is restricted from displacement in the width direction and the vertical direction by the guide rail 13.
The drive unit 16 includes a ball screw mechanism 18 disposed between the floor 12 and the support plate 15, and a motor 19 that transmits a drive force to the ball screw mechanism 18, and the support plate is driven by the drive force of the motor 19. 15 is moved in the longitudinal direction of the vehicle body.

  The rotation mechanism 11 </ b> B is fixedly installed at a substantially central portion in the width direction on the support plate 15, and the bearing 20 that rotatably supports the turntable 21 and the turntable 21 is rotated with respect to the support plate 15. Drive unit 22.

  The drive unit 22 includes a ring gear 23 that is fixedly installed coaxially on the outer peripheral side of the bearing 20 on the support plate 15, and a pinion gear 24 that is fixedly installed on the turntable 21 and attached to the rotating shaft meshes with the external teeth of the ring gear 23. And the driving force of the motor 25 acts on the turntable 21 as a rotational force via the pinion gear 24 and the ring gear 23.

  The urging slide mechanism 11C drives a guide mechanism 26 that guides the behavior of the seat body 10 when the seat body 10 moves forward and backward with respect to the turntable 21, and drives the seat body 10 forward and backward with respect to the turntable 21. And a drive unit 27.

  A pair of long guide blocks 28 are attached to both sides of the turntable 21 in the width direction. The guide blocks 28 on both sides are arranged along the front-rear direction of the seat below both sides of the seat body 10 (seat cushion 4A) at the initial position. Each guide block 28 is formed to be inclined obliquely downward from the rear end portion toward the front, and a guide rail 29 extending in the front-rear direction of the seat is fixedly installed on the upper surface thereof. A slide block 30 is slidably engaged with each guide rail 29.

  A lead screw 32 of the ball screw mechanism 31 is attached in parallel to the guide rail 29 at an inner position in the vehicle width direction than the guide rail 29 of each guide block 28. Each lead screw 32 is connected to a common motor 34 through a gear box (not shown), and rotates synchronously with the power of the motor 34. Further, each slide block 30 held by the guide rails 29 on both sides is attached with a nut 35 screwed into an adjacent lead screw 32. Both slide blocks 30 receive the rotational power of the motor 34 at the nut 35 portion, and thereby slide and displace in the seat longitudinal direction.

Each slide block 30 is attached with a bracket 37 that is bent in an approximately L shape on the upper side and connected to the side frame 36 of the seat body 10. A support pin 38 is attached to the bracket 37, and the support pin 38 is rotatably connected to the rear end portion of the side frame 36. Therefore, the slide block 30 driven by the motor 34 moves the rear end portion of the seat body 10 along the guide rail 29 via the support pins 38.
In the case of this embodiment, the drive unit 27 includes a motor 34 and a ball screw mechanism 31.

A bracket 39 protruding upward is provided at the front end of each guide block 28, and a guide roller 40 is rotatably attached to the bracket 39.
On the other hand, long side guide grooves 41 extending in the front-rear direction of the seat are formed in the side frames 36 on both sides of the seat cushion 4A, and the left and right guide rollers 40 roll in the guide grooves 41, respectively. Engaged as possible. The guide groove 41 is not linear but is formed in a curved shape in which the central portion curves upward. This guide groove 41 controls the behavior of the front side of the seat body 10 in cooperation with the guide roller 40, that is, the front-back tilt of the seating surface. In the case of this embodiment, the guide mechanism 26 includes a guide groove 41 and a guide roller 40. The base member that supports the seat body 10 so as to be movable forward and backward through the door opening 1 of the vehicle body is movable forward and backward slide mechanism 11A, rotation mechanism 11B, turn-out slide mechanism 11C of turn-out slide mechanism 11C, guide The block 28, the guide rail 29, and the slide block 30 are configured.

  4 to 6 show details around the guide roller 40 of the guide mechanism 26. FIG. In the figure, the arrow F indicates the front of the seat body 10, and the arrow OU indicates the outside in the vehicle width direction. In the following description, unless otherwise specified, “front” and “rear” mean the direction of arrow F and the opposite direction, respectively, and “out” and “inner” mean the direction of arrow OU and it, respectively. It shall mean the reverse direction.

  As shown in FIGS. 4 to 6, the bracket 39 that supports the guide roller 40 is made of a resin that covers a portion of the peripheral area of the guide roller 40 excluding the rolling contact portion with the guide surface of the guide groove 41. The roller cover 45 is attached. The roller cover 45 is inserted into the guide groove 41 together with the guide roller 40 and is slidable with respect to the upper and lower guide surfaces of the guide groove 41. Note that FIG. 3 is a drawing for explaining the basic configuration of the movable mechanism 11, and thus detailed illustration of the roller cover 45 and the like is omitted.

  More specifically, the roller cover 45 is disposed in the guide groove 41 at the front block 46 disposed in front of the guide roller 40 with a minute gap therebetween, and behind the guide roller 40 with the minute gap interposed therebetween. A rear block 47, an upper extension piece 48 (extension piece) and a lower extension piece 49 (extension piece) that extend above and below the guide groove 41 inside the side frame 36, respectively, An upper extension piece 50 (extension piece) extending above the guide groove 41 on the outer side of the part frame 36 and an upper extension piece 48 arranged on the inner side of the side frame 36 to a lower extension piece 49. And a locking piece 51 that is formed to project from the extending part and is locked to the bracket 38.

  As shown in FIG. 5, a curved recess 60 is formed on the front side of the bracket 39, and a locking piece 51 of the roller cover 45 is engaged with a portion extending from the upper portion of the bracket 39 to the recess 60. It has become so.

  The front block 46 extends in the vertical width direction of the guide groove 41 on the front side of the guide roller 40 and covers almost the entire front surface of the guide roller 40. As shown in FIG. 4, the front block 46 is inclined so that the lower edge on the front side forms an obtuse angle β1 with respect to the lower side 41 a of the guide groove 41 and bulges forward on the upper edge portion. A bulging portion 52 is provided, and this bulging portion 52 also forms an obtuse angle β2 with respect to the upper side 41 b of the guide groove 41.

  On the other hand, the rear block 47 covers the upper region on the rear surface of the guide roller 40 on the rear side of the guide roller 40. For this reason, the rear block 47 itself covers only a part of the rear side of the guide roller, but in the region on the rear side of the guide roller 40 inside the rear block 47 (in the vehicle width direction). The lower extension piece 49 is arranged so as to be continuous.

  Here, the upper extending pieces 48 and 50 of the roller cover 45 are arranged so as to sandwich the upper side 41a of the guide groove 41 from both sides in the width direction, and between them, as shown in FIG. The opening 53 for exposing the outer peripheral surface of the upper portion to the upper portion is secured. The upper extending pieces 48 and 50 and the lower extending piece 49 are slidable with respect to the upper side 41b and the lower side 41a of the guide groove 41, and restrict relative displacement in the width direction of the roller cover 45 and the side frame 36. It is supposed to be.

  The outside of the side frame 36 is covered with a skin of the side support portion, a reclining cover, and the like.

  In the above configuration, when the slide block 30 is moved back and forth along the guide rail 29 by the upper drive unit 27, the guide roller 17 on the front end side of the guide block 28 rolls in the guide groove 41 of the side frame 36. And controls the tilting posture of the side frame 36, that is, the posture of the seating portion 5 of the seat cushion 4A.

  At this time, the roller cover 45 covering the front and rear in the rolling direction of the guide roller 17 relatively moves in the guide groove 41 together with the guide roller 17. For this reason, the acute space between the outer peripheral surface of the guide roller 17 and the guide surface on the upper side of the guide groove 41 is always closed by the front block 46 and the rear block 47 of the roller cover 45, and foreign matter is in between. No more getting in. In particular, since the front side of the guide roller 17 is almost completely covered by the front block 46 of the roller cover 45, the entry of foreign matter is more completely prevented.

  The rear block 47 of the roller cover 45 covers only the upper half of the rear side of the guide roller 17, but a lower extension piece 49 is continuously provided on the inner side of the rear block 47 in the vehicle width direction. Therefore, no foreign matter enters between the rear part of the guide roller 17 and the lower guide surface of the guide groove 41 from the inner side in the vehicle width direction. In addition, since the outer side of the guide groove 41 is covered with the skin of the side support part, a reclining cover, or the like, foreign matter does not enter from the outer side.

  In this embodiment, the front edge of the front block 46 of the roller cover 45 is formed to form obtuse angles β1 and β2 with respect to the lower side 41a and the upper side 41b of the guide groove 41. It is also possible to effectively prevent foreign matter from getting between 45 and the guide groove 41.

  Further, in the sheet apparatus 2, the upper extension pieces 48 and 50 and the lower extension piece 49 are integrally provided on the roller cover 45 so as to face the side edge of the guide groove 41. The pieces 48, 50, 49 can prevent foreign matter from entering from the side edge of the guide groove 41, and the extending pieces 48, 50, 49 can regulate the lateral frame 36 from swinging in the width direction. it can. Therefore, in the seat device 2, the operation of the seat body 10 can be stabilized.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

The perspective view which shows the sheet | seat apparatus of one Embodiment of this invention. The perspective view which shows the operation state of the sheet | seat apparatus of one Embodiment of this invention. The side view which shows schematic structure of the movable mechanism of the sheet | seat apparatus of one Embodiment of this invention. The perspective view which shows the guide mechanism of the sheet | seat apparatus of one Embodiment of this invention. The perspective view which shows the guide mechanism of the sheet | seat apparatus of one Embodiment of this invention. Sectional drawing corresponding to the AA cross section of FIG. 6 of one Embodiment of this invention.

Explanation of symbols

1 ... Door opening (opening)
2 ... Sheet device 10 Sheet body 21 ... Turntable (base member)
26 ... Guide mechanism 36 ... Side frame 40 ... Guide roller 41 ... Guide groove 45 ... Roller cover 48, 50 ... Upper extension piece (extension piece)
49 ... Lower extension piece (extension piece)

Claims (2)

A seat body on which an occupant is seated;
A base member that is installed in the vehicle interior and supports the seat body so as to be movable forward and backward through the opening of the vehicle body;
In a vehicle seat device comprising: a guide mechanism that guides the behavior of the seat body when the seat body moves forward and backward in and out of the vehicle interior;
The guide mechanism is
A guide groove provided along the forward / backward movement direction in the seat body;
A guide roller that is rotatably provided on the base member and rolls along the guide surface of the guide groove when the seat body is advanced or retracted;
A roller cover that is provided on the base member and covers a front side in a rolling direction of an outer peripheral surface of the guide roller in the guide groove;
A vehicle seat device comprising:   2. The guide groove is formed in a side frame of the sheet body, and an extending piece is provided on the roller cover so as to extend in a direction opposite to the side edge of the guide groove. The vehicle seat device described in 1.

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