JP2008037128A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a lock mechanism work also when a seat body is moved horizontally forward in relation to a vehicle floor, and to prevent the seat body from being hindered when rotated, elevated and slid. <P>SOLUTION: This seat has an engaging member 72 of the seat body, an engaged member 64 of the vehicle floor and an intermediate member 90 of a slide base. The engaging member 72 does not normally hinder the advance and retreat of the seat body, and is constituted to be engageable to a first receiving part 92 of the intermediate member 90 during a front collision of the vehicle. The intermediate member 90 does not normally hinder the rotation of the seat body in relation to the vehicle floor and the advance and retreat of the slide base and is moved to a regulation position by the engaging member 72 during the front collision, and the second receiving part 94 is engaged to the engaged member 64 to transmit force moving forward or to the front upper side to the vehicle floor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention includes a rotating mechanism that rotates a seat body between a seating position facing forward of the vehicle and a lateral position facing the door opening, and the seat body is mounted in a lateral position where the seat body faces the door opening. The present invention relates to a vehicle seat provided with an elevating slide mechanism that lowers the outdoor unit.

A technique related to the above-described vehicle seat is disclosed in Patent Document 1.
As shown in FIG. 13, the vehicle seat includes a seat body 101 and a front / rear slide mechanism 102 that is installed on the vehicle floor F and moves the seat body 101 in the vehicle front-rear direction. On the slide base 102t of the front / rear slide mechanism 102, a rotation mechanism 104 that rotates the seat body 101 between a seating position facing the front of the vehicle and a lateral position facing the door opening side is installed. Further, on the rotation base 105 of the rotation mechanism 104, a first slide mechanism 106 that moves the seat body 101 in the lateral position forward or backward out of the passenger compartment, and the advancement of the sheet body 101 by the first slide mechanism 106, An elevating mechanism 107 that lowers and raises the sheet main body 101 as it moves backward is placed. Further, a second slide mechanism (not shown) for moving the seat body 101 forward or backward is installed on the lifting base (not shown) of the lifting mechanism 107.

A locking hook 101f extending rearward in a state of protruding downward is fixed to a side surface of the seat body 101. Then, in the process in which the seat body 101 is returned to the retreat limit position by the second slide mechanism, the locking hook 101f is inserted from the front into the slide engagement portion 107k of the horizontal hole-like lifting mechanism 107. The locking hook 101f and the slide engagement portion 107k engage when the seat body 101 is about to move forward and upward by the seat belt load without preventing the seat body 101 from moving forward and backward by the second slide mechanism. It is configured as follows.
Further, a bracket 110 is vertically fixed to the side surface of the slide base 102t of the front / rear slide mechanism 102, and a rotation lock hook 111 is formed at the upper end thereof. On the other hand, a rotation engagement portion 105 k is provided on the side surface of the rotation base 105 at a position corresponding to the rotation lock hook 111. Then, in the process in which the rotation base 105 is returned to the vehicle-front-facing seating position, the rotation lock hook 111 is inserted through the opening of the rotation engagement portion 105k. The rotation lock hook 111 and the rotation engagement portion 105k are configured to engage with each other when the seat body 101 is about to move forward and upward due to the seat belt load without disturbing the rotation of the rotation base 105. .

A slide engagement portion 114 is fixed to the vehicle floor F along the front / rear slide mechanism 102. A slide lock hook 112 formed at the lower end of the bracket 110 is positioned at a position directly below the slide engagement portion 114. The slide lock hook 112 and the slide engagement portion 114 are configured to engage with each other when the seat body 101 is about to move forward and upward due to the seat belt load without interfering with the forward / backward slide of the slide base 102t. .
For this reason, when the seat main body 101 is about to move forward and upward due to the seat belt load in a state where the seat main body 101 is in the front-facing seating position, the locking hook 101f of the seat main body 101 and the slide engaging portion of the lifting mechanism 107 The sheet main body 101 is held on the rotation base 105 by engaging with 107k. Further, the rotation engagement portion 105k of the rotation base 105 is engaged with the rotation lock hook 111 of the bracket 110, and the slide lock hook 112 of the bracket 110 is engaged with the slide engagement portion 114 of the vehicle floor F. As a result, the seat body 101 is held on the vehicle floor F.

JP-A-2005-14672

  However, in the vehicle seat 100 described above, when the seat body moves substantially horizontally forward with respect to the vehicle floor due to the seat belt load, the locking hook 101f of the seat body 101 and the slide engagement portion 107k of the lifting mechanism 107 are provided. Does not engage. For this reason, the rotation base 105 is not pulled forward and upward by the seat body 101, and the bracket 110 does not move forward and upward. Accordingly, the slide lock hook 112 of the bracket 110 and the slide engagement portion 114 of the vehicle floor F are not engaged, and the lock mechanism does not operate.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to ensure that the seat body moves horizontally forward with respect to the vehicle floor due to the seat belt load. When the locking mechanism works and when the seat body is rotated and moved up and down, the rotation and the up and down slide are prevented from being hindered without special operation.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is a first slide mechanism having a seat base, a rotary mechanism having a rotary table that rotates along a vehicle floor, a slide base that is installed on the rotary table and moves forward and backward, one end of the slide being the slide A link mechanism coupled to the base so as to be pivotable up and down, and an elevating mechanism having a guide mechanism for guiding the link mechanism so that the other end of the link mechanism moves up and down as the slide base moves forward and backward, and the link mechanism A second slide mechanism that supports the seat body so that the seat body can be moved forward and backward at the other end thereof, and the seat body is rotated by the rotating mechanism from a seating position facing the vehicle to a lateral position facing the door opening side, After being advanced in the outdoor direction by the second slide mechanism, it is lowered from the indoor position to the outdoor position by being lowered by the elevating mechanism. A vehicle seat that can be moved and can move the seat main body from an outdoor position to an indoor position by a reverse operation, and an engagement member connected to the seat main body and a cover connected to the vehicle floor. An engaging member; a first receiving portion; and a second receiving portion, configured to be incapable of relative movement in the forward and backward direction with respect to the slide base and movable between a restriction position and a restriction release position. An intermediate member that moves to a restricting position when a forward or front-upward force is applied to the receiving portion, and the engagement member normally does not prevent the seat body from moving forward and backward with respect to the link mechanism; When the vehicle collides forward with the main body in the indoor position, the seat body moves forward or forward and upward with respect to the slide base, whereby the first receiver of the intermediate member And the intermediate member is configured to transmit a force to further move the seat body to the intermediate member, and the intermediate member is usually a vehicle floor of the seat body, the second slide mechanism, and the lifting mechanism. And the forward movement of the slide base relative to the rotation base is not hindered, and the vehicle is moved to the restriction position by the force received from the engagement member when the vehicle collides forward in the state where the seat body is in the indoor position. The second receiving portion is configured to be engaged with the engaged member and transmit a force to move forward or forward and upward to the vehicle floor.

According to the present invention, the engagement member coupled to the seat body moves the seat body forward or front-upward with respect to the slide base when the vehicle collides forward with the seat body in the indoor position. By engaging with the first receiving portion of the intermediate member, the force to further move the sheet main body is transmitted to the intermediate member.
Further, the intermediate member moves to the restricting position by the force received from the engaging member of the seat body, and the second receiving portion of the intermediate member engages with the engaged member and tries to move forward or front-upward. Transmit power to the vehicle floor.
In other words, even when the seat body moves substantially horizontally forward, the engaging member of the seat body engages with the first receiving portion of the intermediate member, so that the intermediate member moves to the restriction position, and the second member of the intermediate member moves. The receiving portion engages with an engaged member on the vehicle floor. This ensures that the lock mechanism works even when the seat body moves substantially horizontally forward relative to the vehicle floor due to the seat belt load.
Here, the engagement member of the seat body does not normally prevent the seat body from moving forward and backward with respect to the link mechanism. Further, the intermediate member normally does not hinder the rotation of the seat body, the second slide mechanism, and the lifting mechanism with respect to the vehicle floor, and the forward movement of the slide base with respect to the rotation base. That is, when the seat body is rotated and slid, the rotation and the lifting / sliding operation are not hindered without special operation.

  According to the present invention, even when the seat body moves horizontally forward with respect to the vehicle floor due to the seat belt load, the locking mechanism is surely activated. Further, when the seat body is rotated and slid, this is not hindered without requiring a special operation.

Hereinafter, based on FIGS. 1-12, the vehicle seat which concerns on Embodiment 1 of this invention is demonstrated. The vehicle seat according to the present embodiment is a seat used for a passenger seat of a vehicle, and a schematic rear view of the vehicle seat is shown in FIG. 2 is a side view showing the slide lock mechanism of the vehicle seat (a view taken along arrow II-II in FIG. 1), and FIGS. 3 to 7 are enlarged side views showing the operation of the slide lock mechanism. 8 to 11 are a plan view and a side view showing the rotational slide operation of the vehicle seat, and FIG. 12 is a side view showing the second slide mechanism.
In addition, front and rear, right and left and up and down in the figure correspond to front and rear, right and left and up and down in the vehicle.

<About the outline of the vehicle seat 1>
In the vehicle seat 1 according to the present embodiment, the seat body 10 is horizontally rotated from a seating position facing the front of the vehicle to a lateral position facing the door opening, and then horizontally advanced from the door opening to the outside of the passenger compartment. The seat body 10 can be returned to the seating position by the reverse operation.
As shown in FIG. 1, the vehicle seat 1 includes a front / rear slide mechanism 30 installed on the vehicle floor F, a rotation mechanism 20 installed on a front / rear slide base 34 of the front / rear slide mechanism 30, and the rotation mechanism. 20 is provided with an elevating mechanism 80 and a second slide mechanism 50 installed on the rotation base 25, and a seat body 10 installed on the second slide mechanism 50.

<Fore-and-aft slide mechanism 30>
The front / rear slide mechanism 30 is a mechanism that moves the seat body 10 in the vehicle front-rear direction. As shown in FIG. 1 and the like, the front / rear slide mechanism 30 includes a pair of left and right fixed-side rails 32 that are installed on the fixed base BF of the vehicle floor F so as to extend in the vehicle front-rear direction. And a front and rear slide base 34 supported in a slidable state.
As shown in FIG. 1 and the like, the fixed-side rail 32 has a substantially U-shaped cross section, and a movable rail portion 34s formed on the left and right end edges of the front and rear slide base 34 is housed in the substantially U-shaped recess. ing. A large number of balls 36 are rotatably fitted in the upper and lower gaps formed between the movable rail portion 34 s and the fixed side rail 32. Accordingly, the front / rear slide base 34 can move smoothly along the fixed-side rail 32.

  On the fixed base BF, a screw shaft 35b is supported in parallel with the fixed-side rail 32 so as to be rotatable around its axis, and a rotating shaft (not shown) of the drive motor 35a is coaxially connected to one end of the screw shaft 35b. It is connected. A nut 35n that is screwed with the screw shaft 35b is fixed to the lower surface of the front / rear slide base 34. As a result, the screw shaft 35b is rotated forward or reversely by the action of the drive motor 35a, so that the front / rear slide base 34 slides back and forth by the screwing action of the screw shaft 35b and the nut 35n.

<About Rotating Mechanism 20>
A rotation mechanism 20 is installed on the front / rear slide base 34. The rotation mechanism 20 is a mechanism that rotates the seat body 10 by approximately 90 ° between a seating position facing forward of the vehicle and a lateral position facing the door opening side.
The rotation mechanism 20 has an inner ring 22 and an outer ring 23 that can be rotated relative to each other. Between the V groove formed in the outer circumferential direction of the inner ring 22 and the V groove formed in the inner circumferential direction of the outer ring 23. A large number of balls (not shown) are sandwiched between the two. Thereby, the outer ring 23 can be smoothly rotated with respect to the inner ring 22 without rattling. An inner ring 22 of the rotation mechanism 20 is fixed to a front / rear slide base 34, and a rotation base 25 is installed on an outer ring 23.
A rotary motor 27 is fixed to the upper surface of the front / rear slide base 34. The rotation output of the rotary motor 27 is transmitted to the outer ring 23 via a gear transmission mechanism (not shown), whereby the rotation base 25 rotates with respect to the front / rear slide base 34.

<About lifting mechanism 80>
On the rotation base 25, the first slide mechanism 40 of the elevating mechanism 80 is installed. The first slide mechanism 40 is a mechanism that functions as an operation source of the elevating mechanism 80, and advances or retracts the seat body 10 in a lateral position facing the door opening side.
As shown in FIG. 1, the first slide mechanism 40 includes a pair of guide rails 42 attached in parallel along the left and right end edges of the rotation base 25. The guide rail 42 is formed in a U-shaped cross section, and is installed on the rotary base 25 so that the concave portions thereof face each other. And the guide roller 43 of the 1st slide base 44 is engage | inserted by the recessed part of each guide rail 42. As shown in FIG. The first slide base 44 is provided with a plurality of guide rollers 43 on the left and right, and these guide rollers 43 are fitted in the recesses of the respective guide rails 42 so as to roll along the guide rails 42. It is configured.

  As shown in FIG. 1, a screw shaft 45b is supported on the rotation base 25 in parallel with the guide rail 42 so as to be rotatable around the axis, and the rotation shaft (of the drive motor 45a is connected to one end of the screw shaft 45b. (Not shown) are connected coaxially. A nut 45n that is screwed onto the screw shaft 45b is fixed to the lower surface of the first slide base 44. As a result, the screw shaft 45b is rotated forward or backward by the action of the drive motor 45a, so that the first slide base 44 is moved along the guide rail 42 on the rotary base 25 by the screwing action of the screw shaft 45b and the nut 45n. Move forward and backward.

  As shown in FIGS. 1 and 8 to 11, a pair of left and right four-joint link mechanisms 84 constituting an elevating mechanism 80 are connected to the first slide base 44 in a state in which the first slide base 44 can tilt up and down. Each of the pair of left and right four-bar linkage mechanisms 84 includes an inner link arm 84a and an outer link arm 84b. And the base end part of both link arms 84a and 84b is supported by the side part of the 1st slide base 44 so that vertical rotation is possible via a spindle (illustration omitted), respectively. Further, as shown in FIG. 12 (A), the side walls of the elevating base 85 are connected to the distal ends of the link arms 84a and 84b via the support shafts so as to be vertically rotatable. Note that the support shafts of both link arms 84 a and 84 b are displaced in the front-rear direction of the seat body 10.

  Further, as shown in FIG. 11, the left and right outer link arms 84 b are supported from below at the front end of the rotation base 25, and the forward or backward movement of the four-bar linkage mechanism 84 is lowered or raised. A guide mechanism 88 for converting the operation is provided. That is, when both link arms 84a and 84b of the four-bar linkage mechanism 84 move forward as the first slide base 44 advances, the distance between the guide mechanism 88 and the first slide base 44 decreases, and the four-bar link mechanism 84 The first slide base 44 rotates downward about the support shaft. Thereby, the raising / lowering base 85 connected with the front-end | tip of the four-bar linkage mechanism 84 falls horizontally. Further, when both link arms 84a and 84b of the four-bar linkage mechanism 84 are retracted as the first slide base 44 is retracted, the distance between the guide mechanism 88 and the first slide base 44 is increased, and the four-bar link mechanism 84 is The first slide base 44 rotates upward about the support shaft. Thereby, the raising / lowering base 85 connected with the front-end | tip of the four-bar linkage mechanism 84 raises.

<About the second slide mechanism 50>
A second slide mechanism 50 is installed on the elevating base 85 as shown in FIGS. The second slide mechanism 50 is a mechanism for moving the seat body 10 forward or backward on the lift base 85.
As shown in FIGS. 1, 12 (A) and 12 (B), the second slide mechanism 50 includes a seat base 51 that supports the seat body 10. It is configured to be slidable in the longitudinal direction of the seat. Guide rails 51 a extending in the front-rear direction of the seat are fixed to the left and right wall portions protruding to the lower surface side of the seat base 51. The guide rail 51a is formed in a U-shaped cross section, and is attached to the left and right wall portions so that the respective concave portions face each other. A guide roller 86 that is rotatably mounted on the side surface of the elevating base 85 is fitted in the recess of each guide rail 51a. The elevating base 85 includes a plurality of guide rollers 86 on the left and right sides, and these guide rollers 86 are fitted into the recesses of the respective guide rails 51a so as to roll along the guide rails 51a. ing.
On the lower surface of the seat base 51, a screw shaft 52b is supported in parallel with the guide rail 51a so as to be rotatable around the axis, and a rotating shaft (not shown) of the drive motor 52a is coaxially connected to one end of the screw shaft 52b. It is connected to. A nut 52c that is screwed onto the screw shaft 52b is fixed to the upper surface of the elevating base 85. As a result, the screw shaft 52b is rotated forward or reversely by the action of the drive motor 52a, so that the seat body 10 and the seat base 51 slide against the lifting base 85 by the screwing action of the screw shaft 52b and the nut 52c. To come.

<About the sheet body 10>
As shown in FIG. 12A and the like, the seat body 10 includes a seat cushion 11 and a seat back 12, and the seat cushion 11 is integrated with a seat base 51. As shown in FIGS. 1 and 2, a seat belt anchor 15 is provided at the right rear portion of the seat base 51 of the seat body 10 so that a seat belt load is applied to the anchor 15 portion. It is configured.
An engagement member 70 of a slide lock mechanism 60 is connected to the seat belt anchor 15 of the seat body 10.

<About the slide lock mechanism 60>
The slide lock mechanism 60 is configured so that the seat main body 10 is moved by the inertial force (seat belt load) of the seated person received through the seat belt or the inertial force of the seat main body 10 when the seat main body 10 is in the seating position facing the vehicle forward. This is a mechanism for restricting the vehicle floor F from moving forward.
As shown in FIG. 2 and the like, the slide lock mechanism 60 includes four members that move together with the engaging member 70 provided on the seat body 10, the guide portion 77 installed on the rotation base 25, and the first slide base 44. The intermediate member 90 provided at the base end portion of the link mechanism 84 and the slide engagement member 64 installed on the vehicle floor F are configured.

<About the engaging member 70 of the slide lock mechanism 60>
The engaging member 70 of the slide lock mechanism 60 includes a fixing bracket 71 connected to the seat belt anchor 15 of the seat body 10 and a hook 72 connected to the fixing bracket 71 in a state of being vertically rotatable. ing. As shown in FIG. 3, the fixing bracket 71 is a plate material having a substantially horizontal T-shape, and the upper end portion of the fixing bracket 71 is coupled to the anchor 15 for the seat belt in a vertically oriented state. A hook 72 is connected to the lower portion of the fixed bracket 71 via a support shaft 71j. Further, a lower limit stopper 71 s that prevents the hook 72 from rotating is bent at the lower end protruding portion of the fixed bracket 71. Further, a spring receiver 71b on which one end of the coil spring 73 is hooked is formed at the front end (right end in FIG. 3) of the fixed bracket 71.

The hook 72 is a plate material in which a notch 72c for forming a collar portion 72k is formed at the upper end (left end in FIG. 3), and a support shaft 71j of the fixed bracket 71 is disposed above the base end portion of the hook 72. An opening 72h through which is passed is formed. In the state where the hook 72 is connected to the fixed bracket 71, the tip end portion of the hook 72 protrudes rearward from the fixed bracket 71. The tip portion of the hook 72 is formed in a parallelogram shape so that the upper corner portion is an acute angle, and the tip surface 72f is a downward inclined surface. A spring receiver 72b on which the other end of the coil spring 73 is hooked is formed below the base end of the hook 72.
The coil spring 73 is urged in a direction to rotate the hook 72 counterclockwise (rotate downward) in FIG. Therefore, when no external force is applied to the hook 72, the lower side 72e of the hook 72 abuts against the lower limit stopper 71s by the spring force of the coil spring 73, and the hook 72 is inclined obliquely downward as shown in FIG. It is held at the lower limit position.

<About the guide portion 77 of the slide lock mechanism 60>
The guide portion 77 of the slide lock mechanism 60 is provided with an engagement member 70 when the seat body 10 is retracted to the retracted position (original position) on the rotation base 25 by the operation of the first slide mechanism 40 and the second slide mechanism 50. The hook 72 is rotated about 10 ° from the lower limit position (see FIG. 5) to the horizontal position (upper limit position).
The guide portion 77 is installed at a predetermined position at the rear of the upper right end of the upper surface of the rotary base 25 and is formed in a short rail shape along the sliding direction of the seat body 10. As shown in FIGS. 3, 4 and the like, the guide portion 77 includes a front (left side in FIG. 4) inclined guide surface 77f and an upper horizontal guide surface 77u, and the inclined guide surface 77f is higher on the rear side. It is configured to be inclined so as to reach the horizontal guide surface 77u. And the height position of the horizontal guide surface 77u of the guide part 77 is set so that it may become equal to the height position of the lower side 72e of the hook 72 in a horizontal position (upper limit position).

  Therefore, as will be described later, when the seat body 10 moves backward by the operation of the first slide mechanism 40 and the second slide mechanism 50 and approaches the retracted position (original position) on the rotation base 25, the tip of the hook 72 is moved. It abuts on the inclined guide surface 77f of the guide portion 77. From this state, when the seat body 10 is further retracted, the hook 72 is pushed up to the inclined guide surface 77f against the spring force of the coil spring 73, and rotates upward (rightward). The lower side 72 e of the hook 72 is supported by the horizontal guide surface 77 u of the guide portion 77 in a state where the hook 72 is rotated to the horizontal position (upper limit position). When the seat main body 10 is further retracted from this state, the lower side 72e of the hook 72 slides with respect to the horizontal guide surface 77u of the guide portion 77, and the hook 72 is held at the horizontal position (upper limit position).

<About the intermediate member 90 of the slide lock mechanism 60>
The intermediate member 90 of the slide lock mechanism 60 is a member that connects the engagement member 70 of the seat body 10 and a slide engagement member 64 (described later) of the vehicle floor F at the time of a vehicle front collision, to the first slide base 44. It is connected to the outer link arm 84b of the connected right-side four-bar linkage mechanism so as to be vertically rotatable. That is, the intermediate member 90 is held so as not to move relative to the first slide base 44 of the first slide mechanism 40 in the seat front-rear direction.
As shown in FIG. 3 and the like, the intermediate member 90 is a plate formed so that the lower part is wide and the upper end side is narrow. As shown in FIGS. 6 and 7, the center position in the height direction of the front portion of the intermediate member 90 is connected to a bracket (not shown) of the outer link arm 84b by a support shaft 94p so as to be vertically rotatable. . Further, a rotation restricting pin 94 c is provided at the rear portion of the intermediate member 90 and at substantially the same height as the support shaft 94. The rotation restricting pin 94c is a pin that restricts the rotation range of the intermediate member 90, and is passed through a vertically long hole 78 (see dotted line) formed in the bracket of the outer link arm 84b. As a result, the intermediate member 90 can rotate up and down around the support shaft 94p within a range in which the rotation restricting pin 94c can move in the vertically long hole 78. That is, the state where the rotation restricting pin 94c is in contact with the lower end of the vertically long hole 78 (see FIG. 6) is the lower limit position (horizontal position) of the intermediate member 90. Further, the state where the rotation restricting pin 94c is in contact with the upper end of the vertically long hole 78 (see FIG. 7) is the upper limit position (forward tilt position) of the intermediate member 90. A spring material (not shown) that holds the intermediate member 90 in the horizontal position is mounted between the intermediate member 90 and the bracket of the outer link arm 84b. Therefore, the intermediate member 90 is normally held in a horizontal position by the spring force of the spring material. 2 to 5, the support shaft 94p and the rotation restricting pin 94c of the intermediate member 90 are omitted.

At the narrowest part of the upper end of the intermediate member 90, a hook-shaped first receiving part 92 is formed by bending in the direction perpendicular to the paper surface of FIG. A second receiving portion 94 (described later) is formed at the lower end portion of the intermediate member 90 by bending in the direction opposite to the first receiving portion 92. And in the state where the intermediate member 90 is held in the horizontal position by the spring force of the spring material, as shown in FIGS. 2 to 6, the first receiving portion 92 is slightly inclined so that the front becomes higher, The second receiving portion 94 is held substantially horizontally.
As shown in FIGS. 2 and 3, the first receiving portion 92 of the intermediate member 90 is also in the state where the intermediate member 90 is held at the retracted position of the rotary base 25 by the first slide base 44. The engaging member 70 of the seat body 10 in the retracted position is disposed in front of the hook portion 72k of the hook 72. Further, the height of the first receiving portion 92 of the intermediate member 90 in the horizontal position is a height at which the hook 72 held at the lower limit position can pass below as shown in FIG. As shown in FIG. 4 and the like, the height is set such that the hook 72 held at the upper limit position can be engaged.

Therefore, as will be described later, when the seat body 10 is retracted with respect to the lifting base 85 of the four-bar linkage mechanism 84 by the second slide mechanism 50 in a state where the intermediate member 90 is in the vicinity of the retracted position of the rotation base 25, FIG. As shown, the hook 72 of the engaging member 70 of the seat body 10 passes under the first receiving portion 92 of the intermediate member 90 in the vicinity of the retracted position with respect to the four-bar linkage mechanism 84. Then, after the seat body 10 has been retracted to the retracted position with respect to the four-bar linkage mechanism 84 by the second slide mechanism 50, the first slide base 44 is retracted from the vicinity of the retracted position of the rotary base 25 to the retracted position, thereby the intermediate member 90. And the seat body 10 are retracted to the retracted position of the rotary base 25. In the process in which the seat main body 10 is retracted from the vicinity of the retracted position of the rotary base 25 to the retracted position, the hook 72 is tilted by the guide portion 77 against the spring force of the coil spring 73 as shown in FIGS. It is pushed up by the surface 77f and rotates to the horizontal position (upper limit position). As a result, the flange portion 72k of the hook 72 of the engagement member 70 faces the first receiving portion 92 of the intermediate member 90 in the forward / backward direction. That is, the hook 72 of the engaging member 70 and the first receiving portion 92 of the intermediate member 90 can be engaged in the forward and backward directions.
Further, when the first slide base 44 advances relative to the rotation base 25 from this state, the intermediate member 90 and the sheet main body 10 advance relative to the guide portion 77 on the rotation base 25. Accordingly, the hook 72 of the engaging member 70 is lowered along the inclined guide surface 77f of the guide portion 77 by the spring force of the coil spring 73, and is rotated downward to the lower limit position. As a result, the hook portion 72k of the hook 72 of the engagement member 70 does not face the first receiving portion 92 of the intermediate member 90 in the forward / backward direction (see FIG. 5), and the two 72 and 92 cannot be engaged in the forward / backward direction. It becomes.

<About the slide engagement member 64 of the slide lock mechanism 60>
The slide engagement member 64 is attached to the fixed base BF of the vehicle floor F along the right fixed rail 32 of the front / rear slide mechanism 30 as shown in FIG. As shown in FIG. 1, the slide engagement member 64 is a short rail-like member formed in a substantially C-shaped cross section, and extends in the horizontal direction (vehicle width direction) from the vertical plate portion 64 w and the upper end of the vertical plate portion 64 w. A horizontal plate portion 64s protruding inwardly. And as shown in FIG. 3 etc., the engaging part 64e provided with several engaging teeth 64k is formed in the protrusion edge of the said horizontal board part 64s so that it may protrude below.
The engaging portion 64e of the slide engaging member 64 is disposed in a state where a clearance is provided immediately above the second receiving portion 94 of the intermediate member 90 in the horizontal position when the seat body 10 is in the seating position facing the front of the vehicle. Is positioned to be. That is, the second receiving portion 94 of the intermediate member 90 is formed so as to enter the lower side of the horizontal plate portion 64s of the slide engagement member 64 when the seat body 10 is in the seating position facing the vehicle front. The second receiving portion 94 of the intermediate member 90 has a slit-like opening 94h through which the engagement teeth 64k can be inserted at positions corresponding to the engagement teeth 64k of the engagement portion 64e of the slide engagement member 64. Is formed.

<About the operation outline of the vehicle seat 1>
In order to move the seat body 10 to the outdoor entry / exit position, first, the seat body 10 is moved to the indoor rotation position by the front / rear slide mechanism 30, and then the seat body 10 is moved to the door opening side by the rotation mechanism 20. Rotate horizontally by about 90 ° until it reaches (see FIGS. 8 and 9). At this time, the intermediate member 90 connected to the rotation base 25 is held in a horizontal position by the spring force of the spring material, and the second receiving portion 94 is in a gap between the second receiving portion 94 and the engaging portion 64e of the slide engaging member 64. It is arrange | positioned up and down in the state via. For this reason, the second receiving portion 94 of the intermediate member 90 and the engaging portion 64e of the slide engaging member 64 do not hinder the forward movement and rotation of the seat body 10.
Next, the first slide mechanism 40 on the rotation base 25 operates and the first slide base 44 slightly advances from the retracted position to the vicinity of the retracted position with respect to the rotating base 25, so that the intermediate member 90, the seat body 10, Advances with respect to the guide portion 77 on the rotation base 25. Accordingly, the hook 72 of the engaging member 70 is lowered along the inclined guide surface 77f of the guide portion 77 by the spring force of the coil spring 73, and is rotated downward to the lower limit position. As a result, the hook portion 72k of the hook 72 of the engaging member 70 does not face the first receiving portion 92 of the intermediate member 90 in the forward / backward direction.

In this state, the second slide mechanism 50 on the lifting base 85 of the four-bar linkage mechanism 84 operates to advance the seat body 10 in the outdoor direction (see FIG. 10). As described above, the hook portion 72k of the hook 72 of the engaging member 70 does not face the first receiving portion 92 of the intermediate member 90 in the forward / backward direction. The first receiving portion 92 does not prevent the seat body 10 from moving forward. In this way, when the seat body 10 advances to the advance position with respect to the lifting base 85 of the four-bar linkage mechanism 84, the first slide mechanism 40 on the rotation base 25 operates again, and the first slide base 44 is rotated. Advance to 25. As a result, the distance between the guide mechanism 88 installed at the front end of the rotation base 25 and the first slide base 44 is reduced, and the four-bar linkage mechanism 84 rotates downward about the support shaft of the first slide base 44. Move. Then, the seat body 10 placed on the elevating base 85 of the four-bar linkage mechanism 84 is lowered horizontally to the boarding / alighting position.
Further, when the seat body 10 is moved from the outdoor boarding / alighting position to the indoor seating position, an operation opposite to the above operation is performed.

Here, when the seat body 10 is returned to the indoor position, the second slide mechanism 50 operates in a state where the intermediate member 90 is held in the vicinity of the retracted position of the rotary base 25 together with the first slide base 44. The seat body 10 moves backward with respect to the lifting base 85 of the four-bar linkage mechanism 84. As a result, as shown in FIG. 5, the hook 72 of the engaging member 70 of the sheet main body 10 passes below the first receiving portion 92 of the intermediate member 90 in the vicinity of the retracted position. When the seat body 10 is retracted to the retracted position with respect to the four-bar linkage mechanism 84, the first slide base 44 is then retracted from the vicinity of the retracted position of the rotary base 25 to the retracted position. Accordingly, the intermediate member 90 and the sheet main body 10 are retracted from the vicinity of the retreat position of the rotation base 25 to the retreat position. As the seat body 10 moves backward, the hook 72 of the engaging member 70 is pushed up to the inclined guide surface 77f of the guide portion 77 against the spring force of the coil spring 73, as shown in FIGS. Rotate to the horizontal upper limit position. Thereby, the collar part 72k of the hook 72 of the engaging member 70 is in a state of facing the first receiving part 92 of the intermediate member 90 in the forward and backward direction.
Further, the seat body 10 is returned from the lateral position facing the door opening to the seating position facing the vehicle by the rotation mechanism 20 and the front / rear slide mechanism 30. In this state, the second receiving portion 94 of the intermediate member 90 is disposed so as to be positioned directly below the engaging portion 64e of the slide engaging member 64 with a gap interposed therebetween.

As a result, when the seat body 10 is in the seating position facing forward of the vehicle and the vehicle collides forward and the seat body 10 moves horizontally forward by the seat belt load, the hook 72 of the engaging member 70 of the seat body 10 is released. The intermediate member 90 integrated with the first slide base 44 is securely engaged with the first receiving portion 92 and held on the rotary base 20. Further, when the intermediate member 90 is pulled forward by the hook 72 of the engaging member 70, the intermediate member 90 is moved upwardly around the support shaft 94 p against the spring force of the spring material as shown in FIG. 7. Turn (turn right). That is, the intermediate member 90 moves from the horizontal position to the forward tilt position. Thereby, the opening 94h of the second receiving portion 94 of the intermediate member 90 is engaged with the engaging teeth 64k of the engaging portion 64e of the slide engaging member 64. As a result, the seat body 10 is held on the vehicle floor F via the engagement member 70, the intermediate member 90, and the slide engagement member 64.
That is, the horizontal position of the intermediate member 90 corresponds to the restriction release position of the present invention, and the forward tilt position of the intermediate member 90 corresponds to the restriction position of the present invention. The slide engagement member 64 corresponds to the engaged member of the present invention.

<Advantages of vehicle seat 1>
According to the present invention, the engagement member 70 connected to the seat main body 19 is configured so that the seat main body 10 moves forward with respect to the first slide base 44 when the vehicle collides forward with the seat main body 10 in the indoor position. Alternatively, by moving forward and upward, the first main body 92 engages with the first receiving portion 92 of the intermediate member 90, and the force that the sheet body 10 intends to move is transmitted to the intermediate member 90.
Further, the intermediate member 90 is moved to the restriction position (forward tilt position) by the force received from the engagement member 70 of the seat body 10, and the second receiving portion 94 of the intermediate member 90 is engaged with the slide engagement member 64. Thus, the force to move forward or forward and upward is transmitted to the vehicle floor F.
That is, even when the seat main body 10 moves substantially horizontally forward, the engaging member 70 of the seat main body 10 engages with the first receiving portion 92 of the intermediate member 90, so that the intermediate member 90 is in the restricting position (inclined forward). The second receiving portion 94 of the intermediate member 90 is engaged with the slide engagement member 64 of the vehicle floor F. Accordingly, even when the seat main body 10 moves substantially horizontally forward with respect to the vehicle floor F due to the seat belt load, the locking mechanism reliably operates and the seat main body 10 is held on the vehicle floor F.
Further, the engagement member 70 of the seat body 10 does not normally prevent the seat body 10 from moving forward and backward with respect to the four-bar linkage mechanism 84. Further, the intermediate member 90 normally does not prevent rotation of the seat body 10, the second slide mechanism 50, and the elevating mechanism 80 with respect to the vehicle floor F and forward and backward movement of the first slide base 44 with respect to the rotation base 25. That is, when the seat body 10 is rotated and moved up and down, the rotation and up and down slide operations are not hindered without special operations.

<Modification example of vehicle seat 1>
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 this embodiment, the intermediate member 90 is attached to the outer link arm 84b of the four-bar linkage mechanism 84, and the intermediate member 90 is integrated with the first slide base 44 in the forward and backward direction. However, it is also possible to fix the intermediate member 90 to the first slide base 44 with a support material or the like.
In the present embodiment, the first slide base 44 is stopped once in the vicinity of the retracted position with respect to the rotary base 25, and then the seat body 10 is retracted to the retracted position with respect to the four-bar linkage mechanism 84. An example is shown in which 44 is retracted from the vicinity of the retracted position to the retracted position. However, it is also possible to return the seat body 10 to the retracted position with respect to the four-bar linkage mechanism 84 after returning the first slide base 44 to the retracted position with respect to the rotating base 25.
Further, an example is shown in which the intermediate member 90 is moved from the horizontal position (regulation release position) to the forward tilt position (regulation position) by rotating the intermediate member 90 upward (right rotation) about the support shaft 94p. However, the intermediate member 90 may be guided from the restriction release position to the restriction position by a guide member or the like.
Moreover, although the example in which the engaging member 70, the intermediate member 90, and the slide engaging member 64 are provided on the right side of the seat body 10 has been shown, these members 70, 90, and 64 can also be provided on the left side of the seat body 10. It is.
Moreover, although the vehicle seat 1 used as a passenger seat has been illustrated, the vehicle seat according to the present invention can be used other than the passenger seat.

It is a model rear view of the vehicle seat which concerns on Embodiment 1 of this invention. It is a side view showing the slide lock mechanism of a vehicle seat. It is an enlarged side view showing operation | movement of a slide lock mechanism. It is an enlarged side view showing operation | movement of a slide lock mechanism. It is an enlarged side view showing operation of a slide lock mechanism. It is an enlarged side view showing operation | movement of a slide lock mechanism. It is an enlarged side view showing operation of a slide lock mechanism. It is a top view showing operation | movement of the vehicle seat. It is a side view showing operation of a vehicular seat. It is a side view showing operation of a vehicular seat. It is a side view showing operation of a vehicular seat. It is the side view (A figure) showing a 2nd slide mechanism, and the BB arrow enlarged view (B figure) of A figure. It is a model side view of the conventional vehicle seat.

Explanation of symbols

F Vehicle floor 10 Seat body 20 Rotating mechanism 25 Rotating base 40 First slide mechanism 44 First slide base 50 Second slide mechanism 64 Slide engaging member (engaged member)
70 Engaging member 72 Hook 77 Guide portion 80 Elevating mechanism 84 Four-bar linkage mechanism 85 Elevating base 88 Guide mechanism 90 Intermediate member 92 First receiving portion 94 Second receiving portion

Claims (1)

A seat body, a rotary mechanism having a rotary table that rotates along the vehicle floor, a first slide mechanism that is installed on the rotary table and has a slide base that moves forward and backward, and one end of which can be turned up and down on the slide base An elevating mechanism that has a guide mechanism that guides the link mechanism so that the other end of the link mechanism moves up and down as the slide base moves forward and backward, and a seat body at the other end of the link mechanism A second slide mechanism that is supported so as to be able to move forward and backward. The seat body is rotated from a seating position facing the front of the vehicle to a lateral position facing the door opening by the rotation mechanism, and is outdoors by the second slide mechanism. After moving forward in the direction, it can be moved from the indoor position to the outdoor position by being lowered by the lifting mechanism. Can, a vehicle seat of the seat body in the reverse operation can be moved from the outdoor location to the room location,
An engagement member coupled to the seat body;
An engaged member connected to the vehicle floor;
A first receiving portion and a second receiving portion are provided, are configured such that they cannot move relative to the slide base in the forward and backward directions, and are movable between a restriction position and a restriction release position. Or having an intermediate member that moves to a restricting position when a forward upward force is applied,
The engaging member does not normally prevent the seat body from moving forward and backward with respect to the link mechanism, and the seat body moves forward with respect to the slide base when the vehicle collides forward with the seat body in the indoor position. Or, it is configured to engage the first receiving portion of the intermediate member by moving forward and upward, and transmit the force of the seat body to further move to the intermediate member,
The intermediate member normally does not prevent rotation of the seat body, the second slide mechanism and the lifting mechanism relative to the vehicle floor, and forward and backward movement of the slide base relative to the rotation base, and the vehicle is in a state where the seat body is in an indoor position. When the vehicle collides forward, the second receiving part engages with the engaged member by moving to the restriction position by the force received from the engaging member, and the force to move forward or forward and upward is applied to the vehicle floor. It is comprised so that it may transmit to, The vehicle seat characterized by the above-mentioned.

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