JP6347491B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat configured such that a seat body can be moved between a seating position facing forward of the vehicle and a boarding / alighting position facing sideways of the vehicle.

  A technique related to the above-described vehicle seat is disclosed in Patent Document 1. As shown in FIG. 17, the vehicle seat 100 described in Patent Literature 1 is provided with a slide lock mechanism 120 that restricts the seat body 102 from moving forward in the event of a vehicle forward collision. The slide lock mechanism 120 includes an opening portion 122 formed in the seat frame 103 of the seat body 102 and a hook portion 124 provided at the base end portion of the four-bar linkage mechanism 112 on the rotary table 110. The hook portion 124 is connected to the base end portion of the four-bar linkage mechanism 112 in a state in which the hook portion 124 can rotate up and down, and receives a spring force in the downward rotation direction. The base end portion of the four-bar linkage mechanism 112 is connected to the slide base 114.

  A hook portion 124k inserted from above into the opening 122 of the seat frame 103 is provided at the distal end of the hook portion 124, and a cam follower 124c is provided at the base end portion of the hook portion 124. The cam follower 124 c of the hook portion 124 is in contact with the cam surface 125 f of the cam plate 125 provided at the rear end position of the rotary table 110.

  With the above configuration, when the seat body 102 slides backward to the original position together with the four-bar linkage mechanism 112 and the slide base 114 as shown in FIG. 17, the hook portion 124 is acted by the cam follower 124c, the cam surface 125f, and the spring force. Pivots downward. Then, the flange portion 124k of the hook portion 124 is inserted into the opening portion 122 of the seat frame 103 from above. Thereby, for example, when the seat body 102 moves forward of the vehicle at the time of a vehicle forward collision, the hook portion 124k of the hook portion 124 engages with the periphery of the opening 122 of the seat frame 103, and the forward movement of the seat body 102 is restricted. The When the seat body 102 slides forward from the original position together with the slide base 114, the hook portion 124 rotates upward against the spring force by the action of the cam follower 124c and the cam surface 125f. As a result, the hook portion 124k of the hook portion 124 comes out of the opening portion 122 of the seat frame 103.

JP 2009-6944 A

  In the vehicle seat 100 described above, when the seat body 102 is in its original position, the hook portion 124k of the hook portion 124 is held in a state of being inserted into the opening 122 of the seat frame 103. When the seat main body 102 moves forward of the vehicle at the time of a vehicle front collision, the hook portion 124k of the hook portion 124 engages with the periphery of the opening portion 122 of the seat frame 103. That is, the seat main body 102 moves forward of the vehicle until the hook portion 124k of the hook portion 124 engages with the peripheral edge of the opening 122 of the seat frame 103 at the time of a vehicle front collision.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to minimize the amount of forward movement of the seat body at the time of a vehicle collision.

  The above-described problems are solved by the inventions of the claims. The invention according to claim 1 is a slide table that is slidable in the vehicle front-rear direction, a rotary table that is horizontally rotatable on the slide table, and a seat body that is slid in the front-rear direction of the seat from the interior of the vehicle to the exterior of the vehicle interior A seat slide mechanism for supporting the vehicle, wherein the seat body is configured to be movable between a seating position facing forward of the vehicle and a boarding / alighting position facing the vehicle, the seat being on the slide table or the vehicle floor The engaged portion provided on the fixed base and the seat main body or the seat slide mechanism are provided, and the seat main body moves forward with respect to the engaged portion when the seat main body is at a seating position facing forward of the vehicle. An engagement portion that engages in the direction, and an engagement release mechanism that releases the engagement between the engagement portion and the engaged portion, Disengagement mechanism, the slide table moves from the sheet original position the engaging portion to the disengaged position by backward to a predetermined position.

  According to the present invention, when the seat body is in the vehicle-front-facing seating position, the engaging portion such as the seat body moves in the forward direction of the seat body with respect to the engaged portion provided on the slide table or the fixed base. Are engaged. That is, even before the collision of the vehicle, the engaging portion of the seat body is engaged with the engaged portion of the slide table. For this reason, when a load at the time of a vehicle collision is applied to the seat main body, the collision load is transmitted from the engaging portion to the engaged portion such as the slide table even if the seat main body hardly moves forward. It is transmitted to the vehicle floor. Thereby, the amount of forward movement of the seat body at the time of a vehicle collision is minimized. Further, when the slide table moves backward from the sheet original position to a predetermined position, the engagement portion of the sheet main body moves to the engagement release position by the action of the engagement release mechanism. For this reason, when the seat body moves from the seating position to the boarding / alighting position, the engagement portion or the like does not hinder the movement of the seat body.

  According to the invention of claim 2, the engaged portion is provided on the slide table, and the engaging portion is provided on the seat body.

  According to the invention of claim 3, the engaging portion is a hook having a flange portion at the tip, and the base end portion of the hook is connected to the seat main body so as to be vertically rotatable, and the engaged portion Is a striker having a horizontal axis provided on the slide table, and the hook is rotated in the engagement direction with respect to the seat main body by an elastic force, so that the front end of the hooking surface of the collar portion is the striker of the striker. The hook moves forward along the outer peripheral surface from the rear end position of the outer peripheral surface, and the hook engages with the striker in the forward direction of the seat body. For this reason, the clearance gap between the hook hook surface and the outer peripheral surface of the striker can be minimized.

  According to the invention of claim 4, the disengagement mechanism engages the engagement portion held at the engagement position with the engaged portion by a spring force against the spring force in conjunction with the backward movement of the slide table. Move to the release position.

According to the invention of claim 5, the engaging part is a hook having a hook part at the tip, and the base end part of the hook is connected to the seat main body so as to be rotatable up and down. The mechanism is provided on the slide table so as to be rotatable up and down, an engagement release bracket that rotates the hook in the engagement release direction, a cam follower provided on the engagement release bracket, and the vehicle floor side And a cam plate having a cam surface on which the cam follower of the disengagement bracket can slide, and the cam follower of the disengagement bracket when the slide table is retracted to a predetermined position. Slid along the cam surface of the cam plate, the engagement release bracket rotates to move the hook to the engagement release position.

  According to the invention of claim 6, the seat slide mechanism on the rotary table includes a lift slide mechanism that slides a four-bar linkage mechanism that lifts and lowers the seat body in the seat front-rear direction with respect to the rotary table, and the four-bar link mechanism. And an outer slide mechanism that slides the seat body in the longitudinal direction of the seat with respect to the lift base on a lift base provided at a tip position. For this reason, the engaging portion (hook) provided on the seat main body is connected to the engaged portion (striker) of the slide table across the outer slide mechanism, the lifting base, the four-bar linkage mechanism, the lifting slide mechanism, and the rotary table. Engage. For this reason, the collision load applied to the seat body can be quickly transmitted to the vehicle floor.

  According to the seventh aspect of the present invention, the engaging portion is connected to the belt bracket to which the base end portion of the seat belt is connected in the seat body so as to be vertically rotatable. For this reason, the load applied to the seat belt at the time of a vehicle collision can be reliably transmitted to the engaging portion (hook).

According to an eighth aspect of the present invention, the engaging portion is a hook having a hook portion at the tip, and the base end portion of the hook is connected to the seat body so as to be rotatable up and down. An inclined surface is formed on the front end side of the portion, and when the seat body moves backward to the seating position facing the front of the vehicle, the inclined surface of the hook collar contacts the outer peripheral surface of the striker of the slide table and slides The hook is rotated in the disengagement direction, and the hook inclined surface of the hook passes through the striker, so that the hook is rotated in the engagement direction by an elastic force. A collar engages with the striker. That is, when the seat body returns to the seating position, the hook of the seat body automatically engages with the striker of the slide table.

  According to the present invention, the amount of forward movement of the seat body at the time of a vehicle collision can be minimized.

It is a schematic plan view showing operation | movement of the vehicle seat which concerns on Embodiment 1 of this invention. It is a model rear view of the said vehicle seat. FIG. 3 is a schematic side view of a vehicle seat when the seat body is rotated about 90 ° counterclockwise. It is a model side view of the vehicle seat showing the operation state of the outer slide mechanism of the vehicle seat. It is a model side view of the vehicle seat showing the operation state of the raising / lowering slide apparatus of a vehicle seat. It is a perspective view showing the fixed base and cam plate of the said vehicle seat. It is a perspective view showing the slide table and striker of the said vehicle seat, a rotary table, etc. FIG. It is a perspective view showing the engagement release bracket provided in the said slide table. It is a perspective view showing the seat frame and hook in the seat main body of the said vehicle seat. It is a side view showing the relationship between a hook and a striker when the seat main body of the said vehicle seat exists in a seating position, and the relationship between a disengagement bracket and a cam plate. It is an enlarged view showing the relationship between the hook and striker in FIG. It is a side view showing the relationship between a hook and a striker when the slide table of the said vehicle seat reverse | retreats from the original position, and the relationship between a disengagement bracket and a cam plate. It is a side view showing the relationship between a hook and a striker when the slide table of the said vehicle seat reverse | retreats from the original position, and the relationship between a disengagement bracket and a cam plate. It is a side view showing the relationship between a hook and a striker, and the relationship between a disengagement bracket and a cam plate when a seat body moves forward by the vehicle seat lifting and lowering slide mechanism. It is a side view showing the relationship between a hook and a striker, and the relationship between a disengagement bracket and a cam plate when a seat body rotates horizontally by the vehicle seat rotation mechanism. It is a side view showing the relationship between a hook and a striker when the slide table of the said vehicle seat advances to an original position, and the relationship between a disengagement bracket and a cam plate. It is a model side view showing the slide lock mechanism of the conventional vehicle seat.

  Hereinafter, based on FIGS. 1-16, the vehicle seat which concerns on Embodiment 1 of this invention is demonstrated. As shown in FIG. 1, the vehicle seat 10 according to the present embodiment is a seat that is used as a passenger seat of a vehicle so that the seat body 60 can be moved from a seating position in the vehicle interior to a boarding / exiting position outside the vehicle interior. It is configured. Here, the front, rear, left, right, and top and bottom shown in the figure correspond to the front, back, left, right, and top and bottom of the vehicle including the vehicle seat 10.

<About the outline of the vehicle seat 10>
As shown in FIGS. 2 to 5, the vehicle seat 10 includes a fixed base 12 on the vehicle floor F, a slide table 20 on the fixed base 12, and a rotary table 30 on the slide table 20. In addition, the vehicle seat 10 includes an elevation slide device 40 on the rotary table 30, and a seat body 60 is installed on an elevation base 50 of the elevation slide device 40 via an outer slide mechanism 55. A slide lock mechanism 70 is provided between the seat body 60 and the slide table 20 as shown in FIG. Further, the slide table 20 and the fixed base 12 are provided with an engagement release mechanism 80 for releasing the lock state (engagement state) of the slide lock mechanism 70. 3 to 5, the slide lock mechanism 70 and the engagement release mechanism 80 are omitted.

<About fixed base 12>
As shown in FIGS. 2 to 5, the fixed base 12 is a base fixed on the vehicle floor F, and is configured to support the slide table 20 so as to be slidable back and forth. As shown in FIG. 6, the fixed base 12 includes left and right rail support frames 13 that extend in the vehicle front-rear direction, and slide rails 14 that also extend in the vehicle front-rear direction are provided on the left and right rail support frames 13. . On the left and right slide rails 14, a pair of front and rear sliders 14 s are fitted so as to be slidable along the slide rails 14. The front, rear, left and right sliders 14s are fixed to the lower surface of the slide table 20 as shown in FIG.

  As shown in FIG. 6, the left and right rail support bases 13 of the fixed base 12 are connected to each other by a horizontal beam portion 15 having a central portion and a rear portion extending in the vehicle width direction. A storage portion 17 of a slide drive mechanism 16 (see FIG. 2) is provided on the inner side in the vehicle width direction of the right rail support base 13. The slide drive mechanism 16 is a mechanism that slides the slide table 20 back and forth using the screwing action of the trapezoidal screw 16w and the nut 16n. As shown in FIG. 2, the slide drive mechanism 16 has a nut 16 n fixed to the lower surface of the slide table 20, and a trapezoidal screw 16 w is rotatable to a bearing portion 17 j (see FIG. 6) of the storage portion 17 of the fixed base 12. It is supported in the state.

  As shown in FIG. 6, a cam plate 82 of a disengagement mechanism 80 (described later) is fixed to the right inner wall surface of the storage portion 17 of the fixed base 12 along the right inner wall surface. Has been. Here, in the schematic diagram of FIG. 2, the cam plate 82 of the disengagement mechanism 80 is shown on the outer side in the vehicle width direction of the fixed base 12 in order to easily display the entire configuration of the vehicle seat 10. However, actually, the cam plate 82 is fixed to the right inner wall surface of the storage portion 17 of the fixed base 12 as shown in FIG.

<About the slide table 20>
The slide table 20 is a table configured to be slidable in the vehicle front-rear direction. As shown in FIGS. 2 to 5 and 7, on the slide table 20, there is provided a rotating mechanism 23 that horizontally rotates the rotary table 30 from the vehicle frontward position to the vehicle lateral position (leftward position). Yes. As shown in FIG. 7, the rotation mechanism 23 includes an inner ring 23e and an outer ring 23r configured to be relatively rotatable, and a gear is formed on the outer peripheral surface of the outer ring 23r. An inner ring 23 e of the rotating mechanism 23 is fixed to the slide table 20, and an outer ring 23 r is fixed to the rotating table 30. The upper surface of the slide table 20 is provided with a motor and a gear mechanism (not shown) serving as a drive source for the rotation mechanism 23, and the gears of the gear mechanism mesh with the gears of the outer ring 23r.

  As shown in FIG. 7, a striker 72 of a slide lock mechanism 70 (described later) is provided at the right end position of the slide table 20. The striker 72 includes a horizontal striker main body 72j extending in the vehicle width direction (left-right direction), and a bearing base 72b that supports one end side and the other end side in the axial direction of the striker main body 72j at the rear end position. It is configured. Further, a through hole 72h through which a rotation center shaft 85j of an engagement release bracket 85 (see FIG. 8) of an engagement release mechanism 80 (described later) is passed through a central portion of the striker 72 in the vehicle longitudinal direction of the bearing mount 72b. Is formed.

<About the rotary table 30>
The rotary table 30 is a table that supports the lifting slide device 40 that lifts and lowers the seat body 60, and as described above, is configured to be able to rotate about 90 ° horizontally from the vehicle forward position to the vehicle lateral position. .

<About lifting slide device 40>
As shown in FIGS. 3 to 5, the elevating slide device 40 includes a slide member 41, an elevating slide mechanism 43, a pair of left and right four-bar linkage mechanisms 45, and an elevating base 50. The slide member 41 is installed on the rotary table 30 so as to be slidable in the front-rear direction of the seat, and is configured to be able to slide in the front-rear direction of the seat in response to the operation of the elevating slide mechanism 43. As shown in FIG. 2, the elevating slide mechanism 43 is a drive mechanism that uses a screwing action of a trapezoidal screw 43 w and a nut 43 n, the trapezoidal screw 43 w is supported on the rotary table 30 side, and the nut 43 n is a slide member 41. It is fixed on the side.

  As shown in FIGS. 3 to 5, the base end portion of the pair of left and right four-joint link mechanisms 45 is connected to the slide member 41 so as to be vertically rotatable. Further, the distal end portions of the pair of left and right four-bar linkage mechanisms 45 are connected to the lift base 50 in a state in which the tip can be vertically rotated. The seat body 60 is installed on the lift base 50 via the outer slide mechanism 55. With the above configuration, as shown in FIG. 5, when the slide member 41 slides in the forward direction of the seat by the operation of the lifting / lowering slide mechanism 43, the pair of left and right four-bar linkage mechanisms 45 rotate downward with the weight of the seat body 60 and the like. The elevating base 50 and the seat body 60 descend while moving forward. When the slide member 41 slides in the rearward direction of the seat from the state shown in FIG. 5, the pair of left and right four-joint link mechanisms 45 rotate upward while moving backward, and the lift base 50 and the seat body 60 are placed on the turntable 30. (See FIG. 3 and the like).

<About the sheet body 60>
As shown in FIGS. 3 and 4, the seat body 60 is installed on the elevating base 50 so as to be slidable in the longitudinal direction of the seat with respect to the elevating base 50 of the elevating slide device 40. The seat main body 60 includes a seat frame 62, a seat cushion 64, and a seat back 66, as shown in FIG. As shown in FIG. 9, the seat frame 62 of the seat body 60 includes left and right frame side wall portions 62w and connecting beam portions 62h that connect the left and right frame side wall portions 62w. A rack 55r of the outer slide mechanism 55 is attached on the lower surface side of the seat frame 62 in the vicinity of the right frame side wall 62w so as to extend in the seat front-rear direction.

  The outer slide mechanism 55 is a mechanism for sliding the seat body 60 in the front-rear direction of the seat with respect to the lift base 50 of the lift slide device 40. As shown in FIG. 2, the outer slide mechanism 55 includes a rack 55 r on the seat frame 62 side and a pinion 55 p that is rotated by a motor installed on the elevating base 50. As shown in FIG. 9, a seat belt bracket 63 is attached to the seat frame 62 outside the rear portion of the right frame side wall portion 62w. As shown in FIG. 10, the seat belt bracket 63 is a bracket to which the anchor plate 68p of the seat belt 68 is bolted, and the hook 75 of the slide lock mechanism 70 can be turned up and down on the seat belt bracket 63. Linked in state.

<About the slide lock mechanism 70>
The slide lock mechanism 70 is a mechanism that restricts the seat main body 60 from moving forward relative to the vehicle floor F when the vehicle collides forward with the seat main body 60 in the seating position facing the front of the vehicle. As shown in FIG. 10, the slide lock mechanism 70 includes a hook 75 provided on the seat frame 62 of the seat body 60, and a striker 72 provided on the slide table 20 and configured to be engageable with the hook 75. It has.

<About hook 75>
As shown in FIGS. 9 to 11 and the like, the hook 75 protrudes obliquely forward and downward at a vertical plate-like hook main body portion 75m extending rearward along the seat frame 62, and a tip (rear end) of the hook main body portion 75m. And a single sickle-shaped collar portion 75k. As shown in FIG. 11, a hook surface 75f that is hung from above on the striker main body 72j having a horizontal axis is formed from the lower surface of the hook main body 75m to the front surface of the flange 75k that is continuous from the lower surface. . The hook 75 is connected to the seat belt bracket 63 of the seat frame 62 so that the base end portion (front end portion) of the hook main body portion 75m can be turned up and down by the connecting shaft 76.

  A spring receiving portion 75b is formed below the base end portion of the hook 75 (hook main body portion 75m), and one end of a coil spring 77 is hung on the spring receiving portion 75b. The coil spring 77 is biased to rotate the hook 75 in the engaging direction (right rotation in FIG. 11), and the other end of the coil spring 77 is hooked on the spring receiving portion 63 b of the seat belt bracket 63. ing.

  In the vicinity of the base end portion (front end portion) of the hook 75 (hook main body portion 75m), as shown in FIG. 11, a protruding pin 78 is provided that protrudes horizontally from the side surface of the hook main body portion 75m. The protruding pin 78 is configured to receive a push-up force from an engagement release bracket 85 of an engagement release mechanism 80 (described later). Further, the front end portion (rear end portion) of the hook 75 is formed to be tapered in an arrowhead shape, and an inclined surface 75c that is inclined so that the front end surface (rear surface) of the collar portion 75k is higher on the front end side. It has become.

<About striker 72>
As shown in FIGS. 7, 10, and 11, the striker 72 of the slide lock mechanism 70 is installed at a predetermined right end position on the slide table 20. The striker 72 includes a striker body 72j having a horizontal axis and a bearing mount 72b that supports the striker body 72j. As shown in FIG. 7, the bearing mount 72b includes a pair of parallel mountain-shaped vertical wall portions extending in the vehicle longitudinal direction, and a horizontal shaft-like striker main body portion 72j passes between the rear portions of the pair of mountain-shaped vertical wall portions. Has been. As a result, the striker main body 72j is supported by the bearing mount 72b in a state of being positioned at a predetermined position so as to extend horizontally in the vehicle width direction (left-right direction). As shown in FIGS. 10 and 11, the hook 75 of the slide lock mechanism 70 is connected to the striker 72 (the striker main body portion 72j) by the spring force of the coil spring 77 in a state where the seat main body 60 is returned to the seating position facing the front of the vehicle. It is comprised so that it can engage.

  Here, the hook 75 and the striker 72 (the striker main body 72j) are engaged with each other when the hook 75 is rotated downward (rotated right) from a predetermined upper position by the spring force of the coil spring 77 as shown in FIG. It is done by. Thereby, the front end of the hooking surface 75f of the hook 75 (the flange portion 75k) moves downward and forward along the outer peripheral surface from the rear end position of the outer peripheral surface of the striker main body 72j. The hook 75 is held almost horizontally with the lower surface of the hook 75 (hook main body portion 75m) in contact with the outer peripheral surface of the striker main body portion 72j, and the hook 75 and the striker 72 are engaged in the forward direction of the seat main body 60. Match. Thereby, the clearance in the advancing direction of the sheet main body 60 between the hooking surface 75f of the hook portion 75k of the hook 75 and the outer peripheral surface of the striker 72 (the striker main body portion 72j) can be minimized. Further, when the seat body 60 is moved from the front-facing seating position of the vehicle, the slide table 20 slides backward, and the engagement release mechanism 80 operates to release the engagement state between the hook 75 and the striker 72. .

<About the disengagement mechanism 80>
The disengagement mechanism 80 rotates the hook 75 of the slide lock mechanism 70 upward against the spring force in the process in which the slide table 20 slides backward from the original position to the retreat limit position. It is a mechanism for releasing the engaged state. As shown in FIG. 10 and the like, the disengagement mechanism 80 includes an disengagement bracket 85 attached to the slide table 20 and a cam plate 82 fixed to the right inner wall surface of the fixed base 12.

<About the disengagement bracket 85>
As shown in FIG. 8, the disengagement bracket 85 is provided at a substantially right angle with respect to the bracket body 85m at the frame-shaped bracket body 85m formed in a substantially rhombus shape and at the lower end of the bracket body 85m. Rotation center axis 85j. The rotation center shaft 85j of the disengagement bracket 85 is passed through the through hole 72h of the striker 72 (bearing mount 72b) provided in the slide table 20 and the through hole 87h of the L-shaped support fitting 87 via the bearing 86. Yes. Thereby, the engagement release bracket 85 can be rotated up and down around the rotation center shaft 85j.

  A holding spring 88 is mounted around the rotation center axis 85j of the disengagement bracket 85 to hold the disengagement bracket 85 in the fall position, that is, the right rotation limit position in FIGS. As shown in FIG. 8, one end of the holding spring 88 is hung on the pin-shaped spring receiving portion 85 b of the disengagement bracket 85, and the other end is hung on the spring receiving portion 87 b of the L-shaped support fitting 87. .

  As shown in FIG. 8 and the like, a shaft-like cam follower 85f is coaxially formed in the disengagement bracket 85 at a position opposite to the pin-shaped spring receiving portion 85b. In addition, the engagement release bracket 85 is formed with a pressing surface 85p that pushes up the protruding pin 78 provided on the hook 75 of the slide lock mechanism 70 at the rotation free end position. Here, as shown in FIG. 8, the disengagement bracket 85 is disposed on the outer side in the width direction of the seat body 60 with respect to the striker 72 (bearing mount 72 b). However, in FIGS. 10 and 12 to 16, the engagement release bracket 85 and the cam follower 85 f are displayed on the front side (inner side) of the striker 72 in order to make the operation of the engagement release mechanism 80 easy to understand.

<About the cam plate 82>
The cam plate 82 of the disengagement mechanism 80 is a member that guides the cam follower 85f of the disengagement bracket 85 when the slide table 20 slides back and forth between the original position and the retreat limit position. As shown in FIGS. 6 and 10 and the like, the cam plate 82 is attached to the fixed base 12 that supports the slide table 20 so as to be slidable back and forth. The cam plate 82 is a plate formed in a substantially square shape, and is erected along the slide direction of the slide table 20. The cam plate 82 is formed with a cam surface 82c at the front upper corner of the cam plate 82, as shown in FIG. The cam surface 82c is formed in an inclined surface shape that is inclined at a constant angle so that the rear side becomes higher, and is configured such that the cam follower 85f of the disengagement bracket 85 can come into contact therewith.

  For this reason, when the slide table 20 slides back a predetermined distance from the original position, the cam follower 85f of the disengagement bracket 85 of the slide table 20 contacts the cam surface 82c of the cam plate 82 of the fixed base 12 as shown in FIG. Touch. When the slide table 20 further slides back from this state, the cam follower 85f of the disengagement bracket 85 moves upward along the cam surface 82c of the cam plate 82 as shown in FIG. As a result, the disengagement bracket 85 rotates in the standing direction against the spring force of the holding spring 88 (left rotation in FIG. 13). As a result, the pressing surface 85p of the disengagement bracket 85 pushes up the protruding pin 78 of the hook 75 of the slide lock mechanism 70, and the hook 75 rotates upward against the spring force of the coil spring 77 (left rotation in FIG. 13). To do. Thereby, the engagement between the hook 75 of the slide lock mechanism 70 and the striker 72 is released.

<Operation of the vehicle seat 10>
Next, the operation of the vehicle seat 10 will be described. In a state where the seat body 60 of the vehicle seat 10 is in the seating position facing forward of the vehicle, the slide table 20 is held in the original position. In this state, as shown in FIGS. 10 and 11, the hook 75 of the slide lock mechanism 70 provided on the seat body 60 is a forward direction of the striker 72 (striker body portion 72 j) on the slide table 20 and the seat body 60. Are engaged. That is, with the lower surface of the hook 75 (hook main body portion 75m) in contact with the outer peripheral surface of the striker main body portion 72j, the gap between the hooking surface 75f of the hook 75k of the hook 75 and the outer peripheral surface of the striker main body portion 72j is minimal. Is held to the limit. For this reason, for example, when the seat body 60 tries to move forward due to a collision load at the time of a vehicle front collision, the collision load is transmitted from the hook 75 to the striker 72, and the vehicle is transmitted from the striker 72 via the slide table 20 and the fixed base 12. It is transmitted to the floor F. Thereby, the amount of forward movement of the seat body 60 at the time of a vehicle front collision is minimized.

  When the seat body 60 moves from the seating position to the boarding / exiting position outside the passenger compartment, first, the slide drive mechanism 16 operates to slide the slide table 20 back from the original position. As a result, as shown in FIG. 12, the cam follower 85 f of the disengagement bracket 85 of the slide table 20 comes into contact with the cam surface 82 c of the cam plate 82 provided on the fixed base 12. When the slide table 20 further slides back from this state, the cam follower 85f of the disengagement bracket 85 moves upward along the cam surface 82c of the cam plate 82 as shown in FIG. As a result, the disengagement bracket 85 rotates in the upright direction against the spring force of the holding spring 88 (left rotation in FIG. 13), and the pressing surface 85p of the disengagement bracket 85 is the protruding pin 78 of the hook 75. Push up. As a result, the hook 75 rotates upward (to the left in FIG. 13) against the spring force of the coil spring 77. Then, when the slide table 20 slides backward to the retreat limit position, the engagement between the hook 75 and the striker 72 is released.

  Next, in a state where the slide table 20 is in the retreat limit position, the elevating slide mechanism 43 of the elevating slide device 40 operates and the slide member 41 slides forward on the rotary table 30 by a certain distance. As a result, as shown in FIG. 14, the seat body 60 moves forward with respect to the slide table 20, and the projecting pin 78 of the hook 75 on the seat body 60 side slides forward along the pressing surface 85 p of the disengagement bracket 85. Move. As a result, the hook 75 passes forward on the striker 72 (the striker main body 72j) while maintaining the posture. When the projecting pin 78 of the hook 75 is separated from the pressing surface 85p of the disengagement bracket 85, the hook 75 is rotated downward to the horizontal engagement position by the spring force of the coil spring 77. Next, when the rotation mechanism 23 operates, the rotary table 30 rotates horizontally, and the sheet main body 60 is gradually directed leftward. FIG. 15 is a schematic diagram showing the relationship between the hook 75 on the seat body 60 side and the striker 72 on the slide table 20 side at this time.

  Next, while the rotary table 30 is rotating, the slide table 20 slides forward from the backward limit position to the original position. As a result, as shown in FIG. 16, the cam follower 85 f of the engagement release bracket 85 provided on the slide table 20 moves downward along the cam surface 82 c of the cam plate 82 of the fixed base 12, and the engagement release bracket 85. Is rotated in the lying down direction by the spring force of the holding spring 88 (right rotation in FIG. 16). Further, the cam follower 85 f of the disengagement bracket 85 is separated from the cam surface 82 c of the cam plate 82 of the fixed base 12. Next, after the elevating slide mechanism 43 of the elevating slide device 40 slides the slide member 41 backward to the original position on the rotary table 30, the slide table 20 is moved from the original position to the predetermined position by the operation of the slide drive mechanism 16. Slide forward.

  Then, as shown in FIG. 3, when the seat main body 60 is rotated to the vehicle lateral position, the rotation mechanism 23 is stopped, and the slide table 20 is stopped at the predetermined position, the lift slide mechanism 43 of the lift slide device 40 is moved. Work again. Further, the outer slide mechanism 55 operates. As a result, as shown in FIGS. 4 and 5, the seat body 60 moves forward with respect to the lift base 50 of the lift slide device 40 and the pair of left and right four-bar linkage mechanisms 45 of the lift slide device 40 together with the slide member 41. It turns downward while moving forward. As a result, the seat body 60 moves to the getting on / off position.

  When the seat body 60 moves from the getting-on / off position outside the passenger compartment to the seating position inside the passenger compartment, the lifting / lowering slide mechanism 43, the outer slide mechanism 55, the rotation mechanism 23, and the slide drive mechanism 16 operate in substantially the reverse direction. . Here, in the vicinity of the seating position, the seat main body 60 moves backward with respect to the slide table 20 at the original position by the operation of the elevating slide mechanism 43. Accordingly, the inclined surface 75c of the flange portion 75k of the hook 75 provided on the seat body 60 side contacts and slides on the outer peripheral surface of the striker body portion 72j on the slide table 20 side. As a result, the hook 75 rotates upward against the spring force of the coil spring 77. Then, with the seat body 60 retracted to the seating position, the inclined surface 75c of the hook 75 (the collar portion 75k) gets over the striker body portion 72j. As a result, the hook portion 75k of the hook 75 is hooked on the striker main body 72j from above by the spring force of the coil spring 77, and the hook 75 and the striker main body 72j are engaged in the forward direction of the seat main body 60.

<Advantages of the vehicle seat 10 according to the present embodiment>
According to the vehicle seat 10 according to the present embodiment, when the seat main body 60 is in the seating position facing the front of the vehicle, the hook 75 (engagement portion) of the seat main body 60 is provided with the striker 72 (covered portion) provided on the slide table 20. The seat body 60 is engaged with the engaging portion) in the forward direction. That is, even before the collision of the vehicle, the hook 75 of the seat body 60 is engaged with the striker 72 of the slide table 20. For this reason, when a collision load at the time of a vehicle collision is applied to the seat body 60, the collision load is transmitted from the hook 75 to the striker 72 even if the seat body 60 hardly moves forward, and the slide table 20 is fixed from the striker 72. It is transmitted to the vehicle floor F via the base 12. Thereby, the amount of forward movement of the seat body 60 at the time of a vehicle collision can be minimized. Further, when the slide table 20 is retracted to the retreat limit position, the hook 75 of the seat body 60 is moved to the disengagement position by the action of the disengagement mechanism 80. For this reason, when the seat body 60 moves from the seating position to the boarding / alighting position, the hook 75 does not prevent the seat body 60 from moving.

  Further, the hook 75 is rotated downward with respect to the seat main body 60 by the spring force (elastic force) of the coil spring 77, so that the front end of the hooking surface 75f of the collar portion 75k is moved from the rear end position of the outer peripheral surface of the striker main body portion 72j. The hook 75 moves forward and downward along the outer peripheral surface, and the striker main body 72j and the seat main body 60 are engaged in the forward direction. For this reason, the clearance gap between the hook surface 75f of the hook part 75k of the hook 75 and the outer peripheral surface of the striker main-body part 72j can be minimized.

  The hook 75 provided on the seat body 60 engages with the striker 72 of the slide table 20 across the outer slide mechanism 55, the lift base 50, the four-bar linkage mechanism 45, the lift slide mechanism 43, and the rotary table 30. . For this reason, the collision load applied to the seat body 60 can be quickly transmitted to the vehicle floor F. The hook 75 is connected to a seat belt bracket 63 to which the base end portion of the seat belt 68 is connected in the seat body 60. For this reason, the load applied to the seat belt 68 at the time of a vehicle collision can be reliably transmitted to the hook 75. Further, when the seat body 60 returns to the seating position, the hook 75 of the seat body 60 can automatically engage with the striker 72 of the slide table 20.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example is shown in which the disengagement mechanism 80 for disengaging the hook 75 and the striker 72 of the slide lock mechanism 70 is composed of the disengagement bracket 85 and the cam plate 82. However, a configuration in which a cam follower is provided on the hook 75 side and the hook 75 is rotated in the disengagement direction by the cam follower and the cam plate 82 when the slide table 20 is slid rearward is also possible. In the present embodiment, the hook 75 is rotated from above with respect to the striker 72, and the hook 75 and the striker 72 are engaged with each other in the forward direction of the seat body 60. However, a configuration in which the hook 75 is engaged with the striker 72 by rotating from below is also possible. Moreover, in this embodiment, although the vehicle seat 10 provided with the raising / lowering slide apparatus 40 on the rotary table 30 was illustrated, it is also possible to apply this invention to the vehicle seat which does not have the raising / lowering slide apparatus 40. FIG.

20 .... Slide table 30 ... Rotary table 40 ... Elevating slide device 43 ... Elevating slide mechanism (seat slide mechanism)
45 ··· Four-bar linkage mechanism 55 ··· Outer slide mechanism (seat slide mechanism)
60 ··· Seat body 62 ··· Seat frame 63 · · · Seat belt bracket 68 · · · Seat belt 70 · · · Slide lock mechanism 72 ··· Striker (engaged portion)
72j ... striker body 75 ... hook (engaging part)
75k ... collar 75f ... hanging surface 75c ... inclined surface 80 ... disengagement mechanism 82 ... cam plate 82c ... cam surface 85 ... disengagement bracket 85f ... Cam followers

Claims (8)

A slide table that is slidable in the vehicle front-rear direction, a rotary table that is horizontally rotatable on the slide table, and a seat slide mechanism that supports the seat body so that the seat body is slidable in the front-rear direction of the seat from the vehicle interior to the exterior of the vehicle interior A vehicle seat configured to be able to move the seat body between a vehicle-facing seating position and a vehicle-side boarding / exiting position,
An engaged portion provided on the slide table or a fixed base on the vehicle floor;
An engagement portion that is provided in the seat body or the seat slide mechanism and engages the engaged portion in the forward direction of the seat body when the seat body is in a seating position facing the front of the vehicle;
An engagement release mechanism for releasing the engagement between the engagement portion and the engaged portion,
The engagement release mechanism is a vehicle seat that moves the engagement portion to an engagement release position when the slide table moves backward from a seat original position to a predetermined position. The vehicle seat according to claim 1,
The engaged portion is provided on the slide table,
The engagement portion is a vehicle seat provided in the seat body. A vehicle seat according to claim 1 or 2, wherein
The engaging portion is a hook having a hook portion at the tip, and a base end portion of the hook is connected in a state of being vertically rotatable with respect to the seat body,
The engaged portion is a striker having a horizontal axis provided on the slide table,
When the hook is rotated in the engaging direction with respect to the seat main body by an elastic force, the front end of the hooking surface of the collar portion moves forward along the outer peripheral surface from the rear end position of the outer peripheral surface of the striker. The hook is a vehicle seat that engages the striker in the forward direction of the seat body. A vehicle seat according to any one of claims 1 to 3, wherein
The engagement release mechanism moves the engagement portion held in the engagement position with the engaged portion by a spring force to the engagement release position against the spring force in conjunction with the backward movement of the slide table. Vehicle seat to be moved. The vehicle seat according to claim 4,
The engaging portion is a hook having a hook portion at the tip, and a base end portion of the hook is connected in a state of being vertically rotatable with respect to the seat body,
The disengagement mechanism is
An engagement release bracket which is provided in a state in which the slide table is rotatable up and down, and rotates the hook in an engagement release direction;
A cam follower provided on the disengagement bracket;
A cam plate that is provided on the vehicle floor side and has a cam surface on which a cam follower of the disengagement bracket can slide;
When the slide table moves back to a predetermined position, the cam follower of the disengagement bracket slides along the cam surface of the cam plate, so that the disengagement bracket rotates to engage the hook. Vehicle seat to be moved to the release position. A vehicle seat according to any one of claims 1 to 5,
The seat slide mechanism on the rotary table is provided at the tip position of the four-joint link mechanism, and a lift slide mechanism that slides a four-joint link mechanism that raises and lowers the seat body in the seat front-rear direction with respect to the rotary table. A vehicle seat comprising: an outer slide mechanism that slides the seat body in the longitudinal direction of the seat with respect to the lift base on the lift base. A vehicle seat according to any one of claims 1 to 6,
The engagement portion is a vehicle seat that is connected to a belt bracket to which a base end portion of a seat belt is connected in the seat main body so as to be vertically rotatable. A vehicle seat according to any one of claims 3 to 7,
The engaging portion is a hook having a hook portion at the tip, and a base end portion of the hook is connected in a state of being vertically rotatable with respect to the seat body,
An inclined surface is formed on the distal end side of the hook collar,
When the seat body is retracted to the vehicle-front-facing seating position, the hook inclined surface contacts the outer peripheral surface of the striker of the slide table so that the hook rotates in the disengagement direction. Move
A vehicle seat in which an inclined surface of a hook part of the hook passes through the striker, whereby the hook rotates in an engagement direction by an elastic force, and the hook part of the hook engages with the striker.

Images