JP2015214268A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide device that prohibits movement further forward from a slide range of a lock mechanism when a walk-in mechanism is in a non-operation state, and a seat is slid by releasing the lock of the lock mechanism of seat slide.SOLUTION: There is included a moving range regulation mechanism that allows the movement of a seat 1 into a walk-in area when the seat 1 moves from the rear side to the walk-in area in a state that a walk-in mechanism is in an operation state, and prohibits the movement of the seat 1 into the walk-in area when the seat 1 moves from the rear side to the walk-in area in a state where the walk-in mechanism is in a non-operation state, and a lock mechanism is in an unlocked state.

Description

  The present invention provides a walk-in mechanism (easy entry mechanism) that makes it easy to get on and off the rear seat by releasing the lock mechanism of the seat slide when the seat back is tilted forward and allowing the entire seat to move forward. The present invention relates to a seat slide device provided.

  The front seat of a two-door vehicle that does not have a door for the rear seat and the second row seat of a minivan with three rows of seats have a walk-in mechanism in the seat slide device to facilitate getting on and off the rear seat. Some are provided (see, for example, Patent Document 1).

International Publication No. 2006/030539

  In recent years, a walk-in mechanism that moves the seat further forward than the seat slide range (hereinafter referred to as the normal slide range) by unlocking the seat slide lock mechanism has been proposed in order to make getting on and off the rear seat even better. Has been.

  In such a mechanism, when the walk-in mechanism is inactive, the seat slide lock mechanism is unlocked, and the seat is slid, if a load is applied from the rear of the seat, the seat There is a problem of moving further forward than the slide range.

In this case, the moving distance for returning to the original position becomes long.
The present invention has been made in view of the above problems, and the problem is that when the walk-in mechanism is in an inoperative state and the seat slide lock mechanism is unlocked and the seat is slid, it is locked. An object of the present invention is to provide a seat slide device that prohibits forward movement of the mechanism beyond the normal slide range.

In order to achieve at least one of the above-described problems, a seat slide device reflecting one aspect of the present invention is:
A lower rail provided along the front-rear direction on the floor side,
An upper rail provided on the seat side and movably engaged with the lower rail;
A lock mechanism for locking / unlocking the movement of the upper rail;
A walk-in mechanism that unlocks the lock mechanism by a forward tilt of the seat back of the seat and allows the seat to move into a walk-in area located in front;
When the seat moves from behind to the walk-in area with the walk-in mechanism activated, the seat is allowed to move into the walk-in area,
When the seat moves from the rear toward the walk-in area in a state where the walk-in mechanism is inactive and the lock mechanism is unlocked, the seat is moved into the walk-in area. And a prohibited movement range regulation mechanism,
The walk-in mechanism and the movement range regulation mechanism are:
A position plate provided on the lower rail and defining a walk-in area;
When the walk-in mechanism is provided in the upper rail and the walk-in mechanism is in an inoperative state, the position plate abuts on a surface that intersects the moving direction of the upper rail, prohibits movement to the walk-in area, and Rotating forward, unlocking the lock mechanism and operating the walk-in mechanism, avoiding contact with the surface of the position plate that intersects the direction of movement of the upper rail, and the walk of the seat An easy entry member that allows movement into the in-area;
It is characterized by comprising.

  Other features of the present invention will become more apparent from the following detailed description and accompanying drawings.

According to the present invention,
When the seat moves from behind to the walk-in area with the walk-in mechanism activated, the seat is allowed to move into the walk-in area,
When the seat moves from the rear toward the walk-in area in a state where the walk-in mechanism is inactive and the lock mechanism is unlocked, the seat is moved into the walk-in area. By providing a prohibited movement range restriction mechanism,
When the walk-in mechanism is inactive and the seat slide lock mechanism is unlocked and the seat is slid, the slide range is restricted to a predetermined range.

Furthermore, the walk-in mechanism and the movement range regulation mechanism are:
A position plate provided on the lower rail and defining a walk-in area;
When the walk-in mechanism is provided in the upper rail and the walk-in mechanism is in a non-operating state, the position plate abuts on a surface intersecting the moving direction of the upper rail, prohibiting movement to the walk-in area, Rotating forward, unlocking the lock mechanism and operating the walk-in mechanism, avoiding contact with the surface of the position plate that intersects the direction of movement of the upper rail, and the walk of the seat An easy entry member that allows movement into the in-area;
As a result, the number of parts constituting the mechanism is small and assembly is easy.

  Other effects of the present invention will become more apparent from the following detailed description and accompanying drawings.

It is a perspective view which shows the invention part of the seat slide apparatus of embodiment. It is an II direction arrow line view shown in FIG. FIG. 3 is a top view of FIG. 2. FIG. 3 is a right side view of FIG. 2. It is explanatory drawing of the sheet | seat in which the seat slide apparatus of this embodiment was provided. It is a front view explaining the movement range regulation mechanism in the state where a walk-in mechanism is inactive. FIG. 7 is a right side view of FIG. 6. FIG. 7 is a right side view of the walk-in mechanism in an operating state in FIG. 6. It is a figure which shows the lock mechanism which locks / unlocks the movement of the upper rail 19 in a locked state. It is a figure which shows the state of a seat back beginning to fall forward. It is a figure which shows the state by which the lock mechanism was unlocked.

  First, a description will be given with reference to FIG. 5 which is an explanatory diagram of a seat provided with the seat slide device of the present embodiment. In the figure, a seat 1 is provided with a seat cushion 3 that supports a seated person's buttocks, a seat back 5 that is provided so as to be tiltable in the front-rear direction (arrow T direction) with respect to the seat cushion 3, A reclining mechanism 7 that locks / unlocks the tilt of the seat back 5 with respect to the seat cushion 3 is provided.

A seat slide device 11 is provided between the lower portion of the seat cushion 3 and the floor 9.
The seat slide device 11 according to the present embodiment is provided on the floor 9 side along the front and rear direction via brackets 13 and 15, and on the seat 1 side (seat cushion 3) and moves to the lower rail 17. It has an upper rail 19 that can be engaged and can move the seat 1 in the front-rear direction (arrow S direction).

  A lock mechanism having a general configuration for locking / unlocking the movement of the upper rail 19 is provided. The lock mechanism includes a plurality of lock grooves formed in the lower rail 17 along the longitudinal direction, a lock member provided in the upper rail 19 and detachable from any one of the plurality of lock grooves, There is a lock urging means for urging the lock member in a direction to engage with the lock groove. Normally, the lock member is engaged with the lock groove by the urging force of the lock urging means, and the movement of the upper rail 19 relative to the lower rail 17 is performed. By locking and releasing the lock member from the lock groove against the urging force of the lock urging member, the movement of the upper rail 19 relative to the lower rail 17 is unlocked. Such a configuration is described in, for example, Japanese Patent Application No. 2013-166434.

Furthermore, the seat slide device of this embodiment has a walk-in mechanism and a movement range regulating mechanism.
These two mechanisms will be described with reference to FIGS. 1 is a perspective view showing an inventive part of the seat slide device of the embodiment, FIG. 2 is a view taken in the direction of the arrow II in FIG. 1, FIG. 3 is a top view of FIG. 6 is a front view for explaining the movement range regulating mechanism when the walk-in mechanism is in an inoperative state, FIG. 7 is a right side view of FIG. 6, and FIG. 8 is a right side view of FIG. .

  1 to 4, a position plate 91 that defines a walk-in area is provided on the side of the lower rail 17 along the moving direction of the upper rail 19. The position plate 91 includes an attachment portion 91a attached to the side portion of the lower rail 17, a plate lock release portion 91b extending from the attachment portion 91a in a direction away from the side portion of the lower rail 17, and a tip portion of the plate lock release portion 91b. The plate stopper portion 91c is bent upward.

  A plate stopper surface 91 e that intersects with the moving direction of the upper rail 19 is formed on the plate stopper portion 91 c of the position plate 91. A surface (lower surface) of the position plate 91 facing the floor of the plate lock releasing portion 91b is a plate lock releasing continuation surface 91d along the moving direction of the upper rail 19.

  A bracket 51 is provided on the top portion 19 a exposed to the outside of the upper rail 19. The bracket 51 includes a base portion 51a disposed on the top portion 19a of the upper rail 19, a standing wall portion 51b bent upward from the base portion 51a, and a cable holding member bent downward from the front portion of the base portion 51a. It has the part 51c and the load receiving part 51d extended toward the side from the rear part of the base 51a.

An easy entry member 55 is rotatably provided on the standing wall 51 b of the bracket 51 using a pin 53.
The easy entry member 55 rises from the base 55a, the base 55a, and is provided along the standing wall 51b of the bracket 51. The easy entry member 55 has a hole 55b in which a hole through which the pin 53 is inserted is formed, and a cable attachment 55c. Is formed.

  An inner cable 57b of the cable 57 is connected to the cable attachment portion 55c. The cable 57 includes an outer cable 57a and an inner cable 57b provided so as to be able to advance and retract within the outer cable 57a. One end portion of the inner cable 57 b is connected to a portion other than the tilt center of the seat back 5, and the other end portion is connected to the cable attachment portion 55 c of the easy entry member 55. Note that the other end of the outer cable 57 a is attached to the cable holding portion 51 c of the bracket 51.

  When the seat back 5 tilts forward, the inner cable 57b of the cable 57 is pulled, and the easy entry member 55 rotates in the direction of arrow C about the pin 53.

  The easy entry member 55 is provided with a hole 51e provided in the base 51a of the bracket 51 and a hole 19b (see FIGS. 7 and 8) provided in the top 19a of the upper rail 19 and facing the hole 51e. In addition, an unlock portion 55d that can abut on a lock member (details will be described later) of a lock mechanism provided in the upper rail 19 is provided.

  Further, the easy entry member 55 is formed with an engaging portion 55 e that can engage with the position plate 91. The engaging portion 55e includes a stopper portion 55f extending from the base portion 55a in the floor direction and a lock release continuation portion 55g extending from the tip of the stopper portion 55f toward the side portion of the lower rail 17.

  As shown in FIGS. 6 and 7, the lock release continuation portion 55 g in the engagement portion 55 e of the easy entry member 55 abuts on the plate stopper surface 91 e of the position plate 91 and moves the seat 1 to the walk-in area. A stopper surface 55h that prohibits the above is formed.

  Further, as shown in FIG. 8, the lock release continuation portion 55g in the engagement portion 55e of the easy entry member 55 is slidable against the plate lock release continuation surface 91d of the plate lock release portion 91b of the position plate 91. A cam lock release continuation surface 55i is formed to allow contact of the seat 1 into the walk-in area and to continue the lock release state of the lock mechanism via the unlock portion 55d.

  The intermediate portion is wound around a pin 53 that rotatably supports the easy entry member 55, and one end is locked to the bracket 51 and the other end is locked by a spring 59 locked to the easy entry member 55. The lock portion 55d biases the easy entry member 55 in a direction opposite to the direction in which the lock mechanism is unlocked.

  Therefore, when the seat back 5 tilts forward against the urging force of the spring 59, the inner cable 57b of the cable 57 is pulled, and the easy entry member 55 rotates in the direction of arrow C around the pin 53, and the unlock portion 55d pushes the lock member of the lock mechanism, and the lock mechanism is unlocked.

  Here, the operation of the walk-in mechanism will be described with reference to FIGS. FIG. 9 is a diagram showing a locked state of a lock mechanism that locks / unlocks the movement of the upper rail 19, FIG. 10 is a diagram showing a state in which the seat back starts to be tilted forward, and FIG. FIG.

In these drawings, the lower rail 17 is formed with a plurality of locking grooves 93 formed along the longitudinal direction.
On the upper rail 19 side, a metal wire is bent and formed, and a lock member (lock spring) 95 detachably engageable with 93 is provided in the lock groove. The lock member 95 is provided on the upper rail 19 in an elastically deformed state, and is engaged with the lock groove 93 by its elastic repulsive force (biasing force). That is, the lock member 95 itself functions as a lock urging unit that urges the lock member in a direction to engage with the lock groove 93.

  Further, a release lever 97 is rotatably provided on the upper rail 19 through a rotation protrusion. The lock mechanism is unlocked by pulling upward on one rotation end side (front side of the seat 1) with the rotation protrusion 99 in between (the release lever 97 rotates in the arrow U direction in the figure). A handle attachment portion 97a to which the lock release handle is attached is formed. On the other rotating end side, it can come into contact with the lock member 95, and when the release lever 97 rotates in the direction of the arrow U, the lock member 95 is separated from the lock groove 93 against the elastic repulsive force of the lock member 95. An unlocking portion 97b is formed.

In FIG. 9, the lock member 95 on the upper rail 19 side is engaged with the lock groove 93 on the lower rail 17 side, and the movement of the upper rail 19 is locked.
At this time, as shown in FIG. 1, the engaging portion 55 e of the easy entry member 55 is in contact with the load receiving portion 51 d bent downward from the rear portion of the base portion 51 a of the bracket 51.

  When the seat back 5 is tilted forward, as shown in FIG. 10, the cable 57 is pulled, and the easy entry member 55 starts to rotate in the direction of arrow C in FIG. 10 against the urging force of the spring 95. At the same time, the unlocking portion 55d of the easy entry member 55 pushes the other rotation end side of the release lever 97 in FIG. 10 to rotate the release lever 97 in the direction of the arrow U, and as shown in FIG. The lock released from the lock groove 93 is released.

  At this time, as shown in FIG. 8, the lock release continuation portion 55 g in the engagement portion 55 e of the easy entry member 55 is positioned below the plate lock release portion 91 b of the position plate 91.

  In this state, the seat 1 is advanced, and the seat 1 can be brought into contact with the walk-in area (the cam lock release continuation surface 55i of the engaging portion 55e of the easy entry member 55 can contact the plate lock release continuation surface 91d of the position plate 91. Advance to the area), enter the walk-in state, and get on and off the rear seats easily.

At this time, rotation of the easy entry member 55 in the direction opposite to the unlocking direction (direction opposite to the arrow C direction) is prohibited, and the unlocked state is continued.
When the seat in the walk-in state is returned to the original position, the seat 1 is moved backward. The seat 1 is removed from the walk-in area, returned to the original position, and the seat back 5 is raised backward. Then, the lock mechanism in the unlocked state is in the locked state.

  Further, when the lock release handle 97 is pulled up and the release lever 97 is rotated in the direction of arrow U to unlock the lock mechanism, the easy entry member 55 does not rotate. In this case, when the seat 1 is moved forward toward the walk-in area, the stopper surface 55h formed on the lock release continuation portion 55g in the engagement portion 55e of the easy entry member 55 is moved to the plate of the position plate 91. It abuts against the stopper surface 91e and prohibits further forward movement. That is, the movement of the seat 1 into the walk-in area is prohibited. At this time, the force acting when the stopper surface 55h of the easy entry member 55 abuts against the plate stopper surface 91e of the position plate 91 is transmitted to the load receiving portion 51d of the bracket 51 against which the easy entry member 55 abuts.

  That is, when the seat 1 moves from the rear toward the walk-in area with the easy entry member 55, the position plate 91, and the spring 95 operating, the walk-in area of the seat 1 is increased. When the seat 1 moves from the rear toward the walk-in area with the walk-in mechanism in an inoperative state and the lock mechanism in the unlocked state, the walk-in area of the seat 1 is A moving range restricting mechanism that prohibits inward movement is configured.

When the walk-in mechanism is inactive and the seat slide lock mechanism is unlocked and the seat is slid, the slide range is restricted to a predetermined range.
Furthermore, in this embodiment, it has the following configuration.

  One of the stopper surfaces 55h formed on the lick release continuation portion 55g in the engaging portion 55e of the easy entry member 55 and the plate stopper surface 91e of the position plate 91 is in a non-operating state. Thus, when the stopper surface 55h of the easy entry member 55 comes into contact with the plate stopper surface 91e of the position plate 91, the easy entry member 55 is rotated so that the stopper surface 55h approaches the plate stopper surface 91e of the position plate 91. The surface that generates the power of.

According to the above configuration, the following effects can be obtained.
(1) When the seat 1 moves from the rear toward the walk-in area while the walk-in mechanism is activated, the seat 1 is allowed to move into the walk-in area, and the walk-in mechanism is not activated. When the seat 1 is moved from the rear toward the walk-in area with the lock mechanism in the unlocked state, a movement range regulating mechanism is provided that prohibits the movement of the seat 1 into the walk-in area. Thus, when the walk-in mechanism is inactive and the seat slide lock mechanism is unlocked and the seat is slid, the slide range is restricted to a predetermined range.

 (2) The three parts of the easy entry member 55, the position plate 91, and the spring 95 unlock the lock mechanism by the forward tilt of the seat back of the seat, and the seat enters the walk-in area located in the front. The walk-in mechanism that keeps the lock mechanism locked even if the seatback is tilted forward in the walk-in area, and the seat is walked in from the rear with the walk-in mechanism activated. When moving toward the area, the seat is allowed to move into the walk-in area, and the seat moves from the rear to the walk-in area with the walk-in mechanism inactive and the lock mechanism unlocked. A movement range restriction mechanism that prohibits movement of the seat into the walk-in area when moving toward Can be configured.

 (3) When the stopper surface 55h of the easy entry member 55 comes into contact with the plate stopper surface 91e of the position plate 91, the force acting on the easy entry member 55 is transmitted to the load receiving portion 51d of the bracket 51. Can be efficiently transmitted to the upper rail.

 (4) Either one of the stopper surface 55h formed on the unlocking continuation portion 55g in the engaging portion 55e of the easy entry member 55 and the plate stopper surface 91e of the position plate 91 has a walk-in mechanism. When the stopper surface 55h of the easy entry member 55 comes into contact with the plate stopper surface 91e of the position plate 91 in the non-operating state, the easy entry member 55 is rotated so that the stopper surface 55h is moved by the plate stopper surface 91e of the position plate 91. The surface generates a force in the approaching direction.

  Therefore, the stopper surface 55h of the easy entry member 55 is difficult to come off from the plate stopper surface 91e of the position plate 91 in a state where the easy entry member 55 does not unlock the lock mechanism.

1 sheet
3 Seat cushion 5 Seat back 11 Seat slide device 17 Lower rail 19 Upper rail 55 Easy entry member 91 Position plate 91a Plate stopper surface 91b Plate lock release continuation surface

Claims (5)

A lower rail provided along the front-rear direction on the floor side,
An upper rail provided on the seat side and movably engaged with the lower rail;
A lock mechanism for locking / unlocking the movement of the upper rail;
A walk-in mechanism that unlocks the lock mechanism by a forward tilt of the seat back of the seat and allows the seat to move into a walk-in area located in front;
When the seat moves from behind to the walk-in area with the walk-in mechanism activated, the seat is allowed to move into the walk-in area,
When the seat moves from the rear toward the walk-in area in a state where the walk-in mechanism is inactive and the lock mechanism is unlocked, the seat is moved into the walk-in area. And a prohibited movement range regulation mechanism,
The walk-in mechanism and the movement range regulation mechanism are:
A position plate provided on the lower rail and defining a walk-in area;
When the walk-in mechanism is provided in the upper rail and the walk-in mechanism is in an inoperative state, the position plate abuts on a surface that intersects the moving direction of the upper rail, prohibits movement to the walk-in area, and Rotating forward, unlocking the lock mechanism and operating the walk-in mechanism, avoiding contact with the surface of the position plate that intersects the direction of movement of the upper rail, and the walk of the seat An easy entry member that allows movement into the in-area;
A seat slide device comprising: The easy entry member is
When operating the walk-in mechanism by the forward tilt of the seat back,
2. The seat slide device according to claim 1, wherein the seat plate is in contact with a surface of the position plate along the moving direction of the upper rail, and the unlocking state of the lock mechanism is continued. The position plate is
A plate stopper surface intersecting the moving direction of the upper rail;
A plate lock release continuation surface along the moving direction of the upper rail,
The easy entry member is
An engaging portion engageable with the position plate;
An unlocking unit that unlocks the lock mechanism and activates the walk-in mechanism in a state of being rotated by the forward tilt of the seat back;
The engagement portion of the easy entry member has
When the walk-in mechanism is in an inoperative state and the seat moves from the rear toward the walk-in area, the seat abuts against the plate stopper surface of the position plate, and the seat moves to the walk-in area. A stopper surface that prohibits
When the walk-in mechanism is in operation and the seat moves from the rear toward the walk-in area, it slidably contacts the plate lock release continuation surface of the position plate, and the walk-in of the seat The seat slide mechanism according to claim 2, further comprising a cam lock release continuation surface that permits movement into an area and continues the unlocked state of the lock mechanism via the unlock portion. In the upper rail,
A load that receives a force acting when the engaging portion of the easy entry member abuts and the stopper surface of the easy entry member abuts the plate stopper surface of the position plate when the walk-in mechanism is in an inoperative state The seat slide device according to claim 3, further comprising a receiving portion. The walk-in mechanism is in an inoperative state,
One of the stopper surface of the easy entry member and the plate stopper surface of the position plate is
When the stopper surface of the easy entry member comes into contact with the plate stopper surface of the position plate, the easy entry member is rotated to generate a force in a direction in which the stopper surface approaches the plate stopper surface of the position plate. The seat slide device according to claim 3, wherein the seat slide device is a surface.