JP4001176B1 - Vehicle seat - Google Patents

Abstract

[PROBLEMS] To ensure that a slide lock mechanism works even when a seat body moves horizontally forward due to a seat belt load, and that the sliding operation is not hindered when the seat body is slid back and forth with respect to a rotating base. To.
A vehicle seat according to the present invention is provided in a seat body in a state where it can be moved to an engaged member and a restriction position and a restriction release position, and is moved to a restriction position, thereby being engaged. The seat main body 10 has moved to the retracted position, and the engaging member 72 has been advanced to a position facing the joint member 92 and moved to a position where it is not opposed to the engaged member 92 by moving to the restriction release position. At this time, the engaging member 72 is moved to the restriction position, and when the seat main body 10 moves forward from the retracted position, the engaging member 72 is moved to the restriction releasing position.
[Selection] Figure 3

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 a slide lifting mechanism for lowering outdoors.

A technique related to the above-described vehicle seat is disclosed in Patent Document 1.
As shown in FIG. 11, 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 retracted 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 main body 101 moves substantially horizontally forward with respect to the rotation base 105 due to the seat belt load, the sliding hook engagement between the locking hook 101f of the seat main body 101 and the lifting mechanism 107 is achieved. The portion 107k is not engaged. That is, the slide lock mechanism of the seat body with respect to the rotation base 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 main body moves horizontally forward with respect to the rotating base due to the seat belt load. When the slide lock mechanism is operated and the seat body is slid back and forth with respect to the rotation base, the back and forth slide operation is not obstructed without any 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 rotation mechanism having a rotation base that rotates along a vehicle floor, a slide base that is installed on the rotation base and moves forward and backward, and one end of the slide is the slide A link mechanism coupled to the base so as to be pivotable up and down, and a lifting mechanism having a guide mechanism for guiding the link mechanism so that the other end of the link mechanism descends and rises 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 moving forward in the outdoor direction by the second slide mechanism, the second slide mechanism is moved down from the indoor position to the outdoor position by being lowered by the lifting mechanism. A vehicle seat capable of moving the seat body from an outdoor position to an indoor position by a reverse operation, an engaged member integrated with the slide base in a forward and backward direction, and a restriction position When the seat main body is in the retracted position with respect to the link mechanism, it moves to the restricted position to move the engaged member to the engaged member. On the other hand, the sheet main body advances from the retreat direction with respect to the link mechanism of the sheet main body to the position opposed to the link mechanism, and moves to the restriction release position, whereby the sheet main body advances with respect to the link mechanism with respect to the engaged member. An engagement member that retreats to a position that does not face in the retreat direction, and the rotation base are provided, and the seat body retracts with respect to the link mechanism. And when the slide base is retracted to the retracted position with respect to the rotating base, the engaging member is moved to the restricting position, and the seat body is advanced from the retracted position with respect to the link mechanism. Or a guide portion that moves the engagement member to the restriction release position when the slide base moves forward from the retreat position with respect to the rotation base.

According to the present invention, when the seat body moves to the retracted position with respect to the link mechanism and the slide base retracts to the retracted position with respect to the rotation base, the engaging member provided on the seat body is on the rotation base. It is moved to the restriction position by the guide part. That is, when the engaging member of the seat body is moved to the restricting position, the engaging member faces the engaged member integrated with the slide base on the rotation base in the forward and backward direction. For this reason, even when the seat body moves horizontally forward due to the seat belt load, the engaging member of the seat body reliably engages with the engaged member integrated with the slide base and is held on the rotating base. .
Further, when the seat body advances from the retracted position with respect to the link mechanism, or when the slide base advances from the retracted position with respect to the rotating base, the engaging member of the seat body is moved by the guide portion on the rotating base. It is moved to the restriction release position. In this manner, the engagement member of the seat body is moved to the restriction release position, so that the engagement member is retracted to a position where it does not face the engaged member of the slide base in the forward / backward direction. Accordingly, the engagement member of the seat body and the engaged member of the slide base do not hinder the advancement of the seat body by the first slide mechanism and the second slide mechanism. That is, when the seat body is slid, the sliding operation is not hindered without performing a special operation.

  According to the second aspect of the invention, when the seat body is moved to the outdoor position, the slide base is advanced from the retracted position to the vicinity of the retracted position with respect to the rotating base prior to the forward movement of the seat body with respect to the link mechanism. When the joint member is moved to the restriction release position and the seat body is moved to the indoor position, the slide base is temporarily stopped immediately before reaching the retracted position with respect to the rotation base, and the seat body is moved to the link mechanism. The engagement member is moved to the restricting position by retracting the slide base to the retracted position with respect to the rotating base after the retracted position is retracted to the retracted position. .

According to the present invention, when the seat body is moved to the outdoor position, the engagement member is moved to the restriction release position by advancing the slide base from the retracted position to the vicinity of the retracted position with respect to the rotating base. That is, as the engaged member and the sheet main body advance from the retracted position to the vicinity of the retracted position with respect to the rotation base by the slide base, the engaging member of the sheet main body moves to the restriction release position.
Further, when the seat body is moved to the indoor position, the slide base is temporarily stopped immediately before reaching the retracted position with respect to the rotating base, and the seat body is retracted to the retracted position with respect to the link mechanism. Then, the engaging member is moved to the restricting position by retracting the slide base to the retracted position with respect to the rotating base. That is, as the engaged member and the sheet main body are retracted from the vicinity of the retreat position to the retreat position with respect to the rotation base by the slide base, the engagement member of the sheet main body is moved to the restriction position.
In this way, the engagement member of the seat body is moved between the restriction position and the restriction release position in a state where the positional relationship between the engaged member of the slide base and the engagement member of the seat body is constant. Therefore, adjustment among the engaging member, the engaged member, and the guide portion is facilitated.

  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 slide lock mechanism surely works. Further, when the seat body is slid, this is not hindered without requiring a special operation.

[Embodiment 1]
Hereinafter, based on FIGS. 1-10, 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 (II-II arrow view of FIG. 1), and FIGS. 3 to 5 are enlarged side views showing the operation of the slide lock mechanism. FIGS. 6 to 9 are a plan view and a side view showing a rotational slide operation of the vehicle seat, and FIG. 10 is a side view and the like showing a 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 reversely by the action of the drive motor 45a, whereby 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 7 to 9, 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. 10 (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 the link arms 84 a and 84 b are displaced in the front-rear direction of the seat body 10.

  As shown in FIG. 9, the left and right outer link arms 84 b are supported from below at the front end portion of the rotary 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 lift 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, 10 (A) and 10 (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. Will come to do.

<About the sheet body 10>
As shown in FIG. 10A 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 front of the vehicle. 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. In addition, 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 contacts 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 fixed to the outer link arm 84b of the connected right four-bar linkage mechanism. That is, the intermediate member 90 is slidable in the seat front-rear direction integrally with the first slide base 44 of the first slide mechanism 40.
As shown in FIG. 3 and the like, the intermediate member 90 is a plate material formed such that the lower part is wide and the upper end side is narrower, and a bowl-shaped first receiving part 92 is illustrated at the narrowest part of the upper end. 3 is bent in the direction perpendicular to the plane of the drawing. Further, a second receiving portion 94 is formed at the lower end portion of the intermediate member 90 by bending in the direction opposite to the first receiving portion 92. The second receiving portion 94 of the intermediate member 90 is formed to be substantially horizontal, and the first receiving portion 92 is slightly inclined so that the front becomes higher.
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 is a height at which the hook 72 held at the lower limit position can pass below as shown in FIG. As shown, the hook 72 held at the upper limit position is set to a height at which it 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.
That is, the upper limit position of the hook 72 of the engaging member 70 corresponds to the restriction position of the present invention, and the lower limit position of the hook 72 corresponds to the restriction release position of the present invention. Further, the first receiving portion 92 of the intermediate member 90 corresponds to the engaged member of the present invention.

<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 directly above the second receiving portion 94 of the intermediate member 90 with a gap interposed between the seat main body 10 and the seat body 10 in the front-facing seating position. It is positioned. 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. 6 and 7). At this time, since the second receiving portion 94 of the intermediate member 90 connected to the rotation base 25 is arranged vertically with the engagement portion 64e of the slide engagement member 64 interposed therebetween, the intermediate member 90 and The engaging portion 64e of the slide engaging member 64 does not hinder the advancement and rotation of the sheet main 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. That is, the hook 72 of the engagement member 70 is held at the restriction release position.

In this state, the second slide mechanism 50 on the lifting base 85 of the four-bar linkage mechanism 84 operates and the seat body 10 moves forward in the outdoor direction (see FIG. 8). As described above, since the hook 72 of the engaging member 70 is held at the restriction release position by the action of the guide portion 77, the hook 72 of the engaging member 70 and the first receiving portion 92 of the intermediate member 90 are connected to the seat body. 10 forwards are not hindered. 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. It turns to the horizontal upper limit position (regulation position). As a result, the hook portion 72k of the hook 72 of the engaging member 70 is held at the restriction position facing the first receiving portion 92 of the intermediate member 90 in the forward / 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.

  Thus, when the vehicle collides forward with the seat body 10 in the vehicle forward seating position 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, the intermediate member 90 is pulled forward and upward by the seat body 10 and moved forward and upward, and the opening 94 h of the second receiving portion 94 of the intermediate member 90 is engaged with the engaging teeth of the engaging portion 64 e of the slide engaging member 64. Engage with 64k. 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.

<Advantages of vehicle seat 1>
According to the present invention, when the seat body 10 moves to the retracted position with respect to the four-bar linkage 84 and the first slide base 44 retracts to the retracted position with respect to the rotation base 25, the seat body 10 is provided on the seat body 10. The engagement member 70 is moved to the restriction position by the guide portion 77 on the rotation base 25. That is, when the engagement member 70 of the seat body 10 is moved to the restriction position, the engagement member 70 is in the forward and backward direction with the first receiving portion 92 of the intermediate member 90 integrated with the first slide base 44. Confront. For this reason, even when the seat main body 10 moves horizontally forward due to the seat belt load, the engaging member 70 of the seat main body 10 is securely connected to the first receiving portion 92 of the intermediate member 90 integrated with the first slide base 44. Engage and are held on the rotating base 25.
Further, when the seat body 10 moves forward from the retracted position, the engaging member 70 of the seat body 10 is moved to the restriction release position by the guide portion 77 on the rotation base 25. As a result, the hook 72 of the engaging member 70 is retracted to a position where it does not face the first receiving portion 92 of the intermediate member 90 in the forward / backward direction. As a result, the engagement member 70 of the seat body 10 and the first receiving portion 92 of the intermediate member 90 of the first slide base 44 do not prevent the advancement of the seat body 10 by the first slide mechanism 40 and the second slide mechanism 50. . That is, when the seat body 10 is slid, the sliding operation is not hindered without performing a special operation.

According to the present embodiment, when the seat body 10 is moved to the outdoor position, the intermediate member 90 and the seat body 10 are advanced from the retracted position to the vicinity of the retracted position with respect to the rotary base 25 by the first slide base 44. In accordance with this, the hook 72 of the engaging member 70 of the seat body 10 moves to the restriction release position. Further, when the seat body 10 is moved to the indoor position, the first slide base 44 moves the seat 90 in accordance with the retraction of the intermediate member 90 and the seat body 10 from the vicinity of the retraction position to the retraction position. The hook 72 of the engaging member 70 of the main body 10 moves to the restriction position.
As described above, the engagement member 70 of the seat body 10 is moved between the restriction position and the restriction release position in a state where the positional relationship between the intermediate member 90 and the engagement member 70 of the seat body 10 in the front-rear direction is constant. Therefore, adjustment among the engaging member 70, the intermediate member 90, and the guide portion 77 is facilitated.

<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 (member to be engaged) 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 / backward direction. showed that. 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.
A first receiving portion 92 that can be engaged with the hook 72 of the engaging member 70 is formed at the upper end of the intermediate member 90, and a second receiving portion that can be engaged with the engaging portion 64e of the slide engaging member 64 at the lower end. Although the example of forming 94 is shown, the first receiving portion 92 and the second receiving portion 94 may be separate members.
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 | movement 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 70 Engaging member 72 Hook 77 Guide portion 80 Lifting mechanism 84 Four-bar linkage mechanism 85 Lifting base 88 Guide mechanism 90 Intermediate member 92 First receiving portion (engaged member)
94 Second receiving part

Claims (2)

A seat body, a rotation mechanism having a rotation base that rotates along the vehicle floor, a first slide mechanism that is installed on the rotation base 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. The reverse operation of the seat body from the outdoor position a vehicle seat that can be moved into the room location,
An engaged member integrated with the slide base in the forward and backward direction;
The seat body is provided in a state movable to a restriction position and a restriction release position, and the engaged body is moved to the restriction position when the sheet body is in a retracted position with respect to the link mechanism. The link mechanism of the sheet main body with respect to the engaged member by advancing to a position facing the member from a lower side and from a retreat direction of the sheet main body with respect to the link mechanism and moving to the restriction release position. An engagement member that retreats to a position that does not face in the forward and backward direction with respect to
When the seat body moves to the retracted position with respect to the link mechanism and the slide base retracts to the retracted position with respect to the rotating base, the engaging member is moved to the restricting position. When the seat body moves forward from the retracted position with respect to the link mechanism, or when the slide base moves forward from the retracted position with respect to the rotating base, the engaging member is moved to the restriction release position. A guide part;
A vehicle seat comprising: The vehicle seat according to claim 1,
When the seat body is moved to the outdoor position, the engaging member is moved forward from the retracted position to the vicinity of the retracted position with respect to the rotating base prior to the forward movement of the seat body with respect to the link mechanism. Is moved to the restriction release position, and when the seat body is moved to the indoor position, the slide base is temporarily stopped immediately before reaching the retracted position with respect to the rotation base, and the seat body is moved to the link mechanism. The engagement member is moved to the restricting position by retracting the slide base to the retracted position with respect to the rotating base after the retracted position is retracted to the retracted position. Vehicle seat.

Images