JP2008081061A - Seat sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To house a memory mechanism storing seat positions inside a rail. <P>SOLUTION: This seat sliding device comprises a lock arm 8 provided inside an upper rail 1 and energized by a plate spring 11 in a direction for locking the upper rail 2 and having a lock release portion 30, a rail 31 for a memory provided in the bottom surface inside a lower rail, a memory base 32 having an engagement body 32a moving on the rail 31 for a memory and energized in a direction for engaging with the rail 31 for a memory, a release lever 37 supported by the upper rail 2 and having a release portion 37b to be engaged with the memory base 32 and a base abutment portion 37c capable of abutting on the memory base 32 in a lower end thereof, an unlock lever 38 supported by the upper rail 2 in an intermediate part thereof and connected to a seat back through a working cable 39 in an upper end thereof and having a pushing portion 38b for pushing an unlock portion 30 in a lower end thereof, and a spring 40 for a lever for energizing the release lever 37 to the separating position and for energizing the unlock lever 38 to the lock position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle seat slide device. When a passenger opens / closes a rear seat by opening a door of a two-door vehicle or the like, the rail lock mechanism is locked in conjunction with the front seat of the front seat being moved forward. The present invention relates to a vehicle equipped with a walk-in mechanism that is released so that the entire seat moves forward.

  The seat slide device has a mechanically set position so that the position of the seat in the longitudinal direction of the vehicle body set by the front seat occupant does not fluctuate every time the occupant gets in and out of the rear seat such as a two-door car. Some of them have a memory mechanism for storing them. An example of a seat slide device provided with a memory mechanism is disclosed in Patent Document 1.

This seat slide device employs a structure that regulates lock on / off, and includes an open member and a keep member for holding the lock lever in the unlocked position, and a memory member and engagement member as a memory mechanism for storing the position of the seat. A stop member is provided.
JP-A-2004-249862

  However, a large space is occupied to provide these memory mechanisms. Conventionally, these memory mechanisms are provided on the side or upper portion of the lower rail. Therefore, a space for arranging the memory mechanism is required around the upper rail and the lower rail, and the layout in which the memory mechanism can be adopted is limited. In particular, recently, a configuration has been adopted in which the lower rail is embedded in the floor or the distance between the seat cushion and the floor is reduced. In such a case, there is a disadvantage that the lower rail cannot be used.

  Therefore, an object of the present invention is to provide a seat slide device that solves such problems.

  The present invention relates to a lower rail fixed to the floor of a vehicle body, an upper rail that is slidably mounted on the lower rail and has a seat coupled thereto, and is rotatably provided inside the upper rail and locks the upper rail with respect to the lower rail. A lock arm; arm urging means for urging the lock arm in a locking direction; and a lock arm formed integrally with the lock arm in a direction to unlock the lock arm against the urging force of the arm urging means. An unlocking portion for rotating, a memory rail coupled to an inner bottom surface of the lower rail, a memory base movably provided along the memory rail, and a memory base provided on the memory base An engaging body that engages with and disengages from the rail, an engaging body urging means that urges the engaging body in an engaging direction, and an upper portion that rotates around the upper rail. An engagement / disengagement lever that is freely supported and has a lower portion facing the inside of the upper rail through the opening of the upper rail, and formed at a lower end portion of the engagement / disengagement lever and simultaneously engaged with the memory base, Engaging / disengaging part that disengages the engaging body from the memory rail against an urging force, and a lower end part of the engaging / disengaging lever that is formed in front of the vehicle body from the engaging / disengaging part and can contact the memory base. A base abutting portion and an opening that is introduced into the upper rail through the opening, an intermediate portion is rotatably supported by the upper rail, and an upper end portion is connected to a seat back via a walk-in cable. The lock release lever formed with a pressing portion that presses the lock release portion, and the engagement / disengagement portion rotate between an engagement position where the engagement portion engages with the memory base and a disengagement position where the release portion is released. The engagement / disengagement lever is biased toward the disengagement position, and is rotated between a lock position where the engagement / disengagement lever is locked at the engagement position and a lock release position where the walk-in cable is pulled and unlocked. A lever urging means for urging the unlocking lever to be moved toward the lock position is provided.

  According to the present invention, when the seat back is moved forward, the walk-in cable is pulled. For this reason, since the lock release lever rotates to the lock release position and the lock release lever rotates, the pressing portion at the lower end presses the lock release portion of the lock arm. It rotates against the urging force to unlock the upper rail with respect to the lower rail. Accordingly, the upper rail is opened with respect to the lower rail. As described above, when the unlocking lever is rotated to the unlocking position, the engaging / disengaging lever that is urged by the lever urging means is rotated to the releasing position, and the engaging / disengaging portion is detached from the memory base. For this reason, the engaging body is released, the released engaging body is engaged with the memory rail by the urging force of the engaging urging means, and the position of the memory base is memory-on. As described above, since the upper rail is unlocked and the engagement / disengagement part is detached from the memory base, the upper rail is in a free state, and the upper rail slides forward with the seat by the action of, for example, a spring for walk-in. To do.

  Here, when the engagement / disengagement lever occupies the disengagement position, the lock release lever is engaged with the engagement / disengagement lever occupying the disengagement position to hold the lock release position, so that the seat back is raised and the walk-in cable pulls. Even in a state where the lock release is not performed, the lock release lever maintains the lock release position, and the engagement / disengagement lever maintains the release position.

  When the seatback that is tilted forward is raised and the upper rail is slid rearward along with the seat, the base contact portion of the engagement / disengagement lever contacts the memory base and the engagement / disengagement lever is rotated toward the engagement position. The engaging / disengaging portion of the engaging / disengaging lever is engaged with the memory base. At this time, the engagement / disengagement unit disengages the engagement body from the memory rail against the urging force of the engagement body urging means, and the memory base position is memory-off. By raising the seat back as described above, the lock release lever is released from the pull-in of the walk-in cable and is urged toward the lock position by the action of the lever urging means. In a state before the engagement, the lock release lever is hooked on the engagement / disengagement lever and maintains the lock release position. When the engagement / disengagement lever rotates to the engagement position at which the engagement / disengagement portion engages with the memory base, the lock release lever is disengaged from the engagement / disengagement lever. Move to position. When the lock release lever moves to the lock position, the engagement / disengagement lever cannot be rotated to the release position. Simultaneously with the rotation of the lock release lever to the lock position, the pressing portion at the lower end thereof releases the lock release portion of the lock arm, so that the upper rail is locked again.

  When the seat is not moved, the upper rail is locked by the seat lock mechanism, and the engagement / disengagement lever is engaged with the lock release lever while being engaged with the memory base. At this time, the memory base is detached from the memory rail. Yes. If the seat back is tilted and the lock release lever is rotated to the lock release position, the above-described effect is obtained. When the seat back is raised and the lock release lever returns to the lock position as described above, the upper rail is locked again, and the engagement / disengagement lever is also locked.

  According to the seat slide device of the present invention, since the memory rail and the memory base constituting the memory mechanism are installed inside the rail, a large space is not required outside the lower rail. Therefore, a lock return position storage (full memory) mechanism can be mounted even in a layout where the space in the width direction is narrow. In addition, since the memory mechanism for storing the seat position is provided inside the rail together with the rail lock mechanism for locking the upper rail, there is no possibility that foreign matters interfere with the memory mechanism to cause malfunction.

  Embodiments of a vehicle seat slide device according to the present invention will be described below.

  As shown in FIG. 1, the seat slide device includes a lower rail 1 fixed to a vehicle floor and an upper rail 2 attached to the left and right positions of the lower surface of the seat. The upper rail 2 is held by a retainer 3 with respect to the lower rail 1. The guide balls 4 and 5 are slidable in the length direction. Bolts (not shown) are inserted into mounting holes (not shown) at both ends of the lower rail 1, and the lower rail 1 is fixed to the vehicle floor via the bolts. On the other hand, a sheet is attached to the upper rail 2 via a bolt 7.

  As shown in FIG. 6, the lower rail 1 has a cross-sectional shape that is formed by extending downwardly bent portions 1 a that are bent inwardly at the upper end of a substantially U-shaped basic cross-section opening at the top. Similarly, the cross-sectional shape is formed by extending outwardly bent portions 2a that are bent outward at the lower end of a substantially U-shaped basic cross-section that opens at the bottom.

  The upper rail 2 is assembled so as to sandwich the downward bent portion 1a of the lower rail 1 between the upward bent portion 2a and the upper side wall portion 2b facing the upward bent portion 2a. As shown in FIG. 1, stopper portions 1 b that set the movement range of the upper rail 2 are formed by bending a part of the lower rail 1 downward on both front and rear ends of the lower rail 1. Two step portions 2g contacting the stopper portion 1b are formed by raising a part of the upward bent portion 2a. Further, at four positions in the length direction of the upward bent portion 2 a of the upper rail 2, a detachment preventing portion 2 h that prevents the retainer 3 from being detached from the upper rail 2 is formed.

  A rail lock mechanism 6 for fixing the upper rail 2 to the lower rail 1 is provided inside the rail between the lower rail 1 and the upper rail 2 thus configured. The rail lock mechanism 6 includes a bearing bracket 12, a lock arm 8 rotatably supported by the bearing bracket 12, and four lock holes 9, 10 formed in the upper rail 2 as shown in FIG. 1 and 6, a plurality of lock holes 14 formed in the lower rail 1 and a leaf spring 11 that urges the lock arm 8 in a direction in which the lock claw 8 b engages with the lock holes 9, 10, 14. And is made up of.

  The lock arm 8 and the bearing bracket 12 will be described. As shown in FIG. 1, a pair of slits 2 d are formed from the upper side wall 2 b to the upper wall 2 c at the front and rear positions of the side surface of the upper rail 2. On the other hand, a lock arm 8 and a bearing bracket 12 are provided inside the upper rail 2. The lock arm 8 is formed in a substantially U-shape, and the lock arm 8 is rotatably supported around the ends of a pair of arm portions 8e facing each other in parallel. That is, a pair of shaft holes 8a are formed at the ends of the respective arm portions 8e on the same straight line, while a pair of bearing portions 12a and the bearings are formed at both ends of the substantially U-shaped bearing bracket 12. A rotating shaft 12b protruding in a direction facing the portion 12a is integrally formed, and the rotating shaft 12b is inserted into the shaft hole 8a. As shown in FIG. 7, the end of the arm portion 8 e of the lock arm 8 and the bearing portion 12 a of the bearing bracket 12 are connected to the inner side of the upper rail 2 in a state where the rotation shaft 12 b is fitted in each shaft hole 8 a. It is inserted into the slit 2d from the outside toward the outside.

  As shown in FIG. 1, there are four lock claws along the length direction on the circumference of a circle which is a part connecting the pair of arms 8e of the lock arm 8 and is separated from the shaft hole 8a by a predetermined radius. 8b and the lock release part 30 are formed. The unlocking portion 30 is provided to rotate the lock arm 8 in the unlocking direction against an urging force of the leaf spring 11 described later. As shown in FIG. It is bent in the opposite direction to the lock claw 8b and is formed into a substantially quarter arc shape. Further, in order to rotate the lock arm 8 by operating from the outside of the upper rail 2 to release the lock, the input arm portion 8c is integrally formed so as to extend one of the pair of arms 8e. As shown in FIG. 7, the input arm portion 8c protrudes upward from one of the pair of slits 2d.

  The bearing bracket 12 is configured by combining a pair of substantially L-shaped bearing bracket pieces 12c and 12d, and the pair of bearing bracket pieces 12c and 12d has a plate thickness in the thickness direction of the one bearing bracket piece 12c. A convex portion 12e is formed at a joint portion formed by offsetting only, and the convex portion 12e is integrated with a concave portion 12f formed in the other bearing bracket piece 12d and spot welding or the like. The bearing bracket 12 is coupled to the ceiling surface inside the upper rail 2 via two rivets 13 inserted through a pair of mounting holes 12g and an attachment hole 2e formed in the upper wall portion 2c of the upper rail 2.

  A leaf spring 11 is provided as an arm urging means in order to urge the lock arm 8 rotatably attached to the inside of the upper rail 2 in the lock direction. The leaf spring 11 constantly urges the tip of the lock claw 8 b of the lock arm 8 toward one upper side wall 2 b of the upper rail 2.

  Since the lock holes 9 and 10 are formed in the upper side wall portion 2b and the upward bent portion 2a of the upper rail 2 provided with the lock arm 8, four lock holes are formed in the longitudinal direction at positions corresponding to the lock claws 8b. Yes. A large number of lock holes 14 are formed in the downward bent portion 1a of the lower rail 1 along the length direction. Since the lock claw 8b is inserted and engaged with the lock hole 9, the lock hole 14, and the lock hole 10 at the time of locking, the height positions are substantially the same, and the pitch is set to be the same as the pitch between the lock claws 8b. ing.

  On the other hand, as shown in FIGS. 1 and 7, a rivet (not shown) inserted through the mounting hole 2 f of the upper rail 2 and one of the bolts 7 are attached to the upper surface of the upper wall portion 2 c of the upper rail 2. The horizontal portion of the bracket 16 having an L-shaped cross section is attached through the two holes 16a, and the handle holder 29 is vertically attached to the vertical portion of the bracket 16 via a horizontal shaft (not shown) along the left-right direction of the vehicle body. It is pivotably supported. The handle holder 29 is pivotally supported by the left and right upper rails 2 of the left and right seat slide devices. The handle holder 29 has a substantially U-shaped control lever (not shown) in a hole 29b and a notch 29c. The left and right ends are inserted and attached. Therefore, by pulling up the front part of the substantially U-shaped operating lever, the pressing part 29a located at the rear end part of the left and right handle holders 29 is lowered, and the left and right input arm parts 8c are simultaneously pressed downward. For this reason, the lock arm 8 rotates counterclockwise in FIG. 6 against the urging force of the leaf spring 11, and the lock claw 8b comes out of the lock holes 9, 14, and 10 and is unlocked.

  A memory mechanism 34 is provided for storing the position of the seat, that is, the position of the upper rail 2 during the walk-in of sliding the seat forward. That is, it is as follows. Inside the lower rail 1, a memory rail 31 is disposed along the length direction of the lower rail 1, and the memory rail 31 is coupled to the inner bottom surface of the lower rail 1. As shown in FIG. 2, claw portions 31a are formed on the memory rail 31 at a constant pitch, and engaging portions 31b are formed between the claw portions 31a. The claw portions 31a are provided at positions facing each other, and each claw portion 31a is bent into a U-shaped cross section. The memory rail 31 is provided with a memory base 32 slidable along the memory rail 31. As shown in FIG. 3, the memory base 32 is a block having a U-shape when viewed from above, and grooves 32a guided by the tips of the claw portions 31a of the memory rail 31 are formed on both side surfaces. A rotating plate 32b is swingably provided on the memory base 32 via a horizontal shaft 32c. Engaging bodies 32d are formed on both sides of the tip of the rotating plate 32b. In order to rotate the rotating plate 32b to move the engaging body 32d downward and engage with the engaging portion 31b of the memory rail 31, the engaging plate is biased as an engaging body urging means. A uniting spring (not shown) is provided. Further, a stopper portion 32g protruding upward is formed on one side of the memory base 32 in front of the vehicle body.

  As shown in FIG. 5, other parts constituting the memory mechanism 34 are arranged on the rear side of the rail lock mechanism 6 in the vehicle body. A horizontal portion 36a of the memory bracket 36 is coupled to the upper surface of the upper rail 2 via two rivets 13 inserted through the mounting holes 2e. As shown in FIG. 5, one of the two rivets 13 also serves to mount the bearing bracket piece 12c. As shown in FIGS. 5 and 6, the memory bracket 36 is configured such that one side of the horizontal portion 36 a extends upward to form an upper vertical portion 36 b, and the other side extends from the opening 2 i formed on the upper surface of the upper rail 2 to the upper rail 2. The lower vertical portion 36c is configured to extend downward toward the inside. As shown in FIGS. 4 and 5, an opening 36d is also formed in the horizontal portion 36a. As shown in FIG. 5, an upper end portion of a substantially C-shaped engagement / disengagement lever 37 is rotatably supported on the upper vertical portion 36b via a support shaft 37a.

  The lower end portion of the engagement / disengagement lever 37 is divided into two portions, and an engagement / disengagement portion 37b is formed on one side. As shown in FIG. 6, the engaging / disengaging part 37b is set off toward the side of the rail with respect to the engaging / disengaging lever 37 itself. The engagement / disengagement portion 37b is detached from the memory base 32 when the engagement / disengagement portion 37b moves upward. At this time, the rotating plate 32b of the memory base 32 is opened, and the opened rotating plate 32b is rotated by the urging force of the engaging body spring so that the engaging body 32d becomes the engaging portion 31b of the memory rail 31. Engage and memory-on the memory base 32 position. On the other hand, the engagement / disengagement portion 37b moves downward to engage with the memory base 32. At this time, the rotating plate 32b of the memory base 32 is rotated against the urging force of the engaging body spring by the pressing force of the engaging / disengaging portion 37b, and the engaging body 32d is detached from the engaging portion 31b of the memory rail 31. Then, the position of the memory base 32 is turned off.

  A base abutting portion 37 c is formed on the other end of the lower end portion of the engagement / disengagement lever 37 which is divided into two forks. The base contact portion 37c is formed in front of the vehicle body with respect to the engagement / disengagement portion 37b. When the upper rail 2 moves rearward of the vehicle body, the base contact portion 37c contacts the stopper portion 32g of the memory base 32 to engage / disengage the lever. When 37 rotates, the engagement / disengagement portion 37 b engages with the memory base 32.

  On the other hand, an intermediate portion of the lock release lever 38 is rotatably supported by the lower vertical portion 36c via the support shaft 38a at a position directly below the support shaft 37a. As shown in FIG. 5, the upper end portion of the lock release lever 38 is connected to the seat back via a walk-in cable 39. When the walk-in cable 39 is pulled to the lower end portion of the lock release lever 38, the rail lock mechanism A pressing portion 38b that presses the unlocking portion 30 formed on the six lock arms 8 upward is formed. As shown in FIG. 1, the pressing portion 38b is partially bent into an L shape to form a horizontal portion.

  A stopper pin 38 c is provided at the upper end of the lock release lever 38. As shown in FIG. 6, the stopper pin 38c protrudes in the horizontal direction toward the engagement / disengagement lever 37, and a connecting portion 38d is provided in a direction opposite to the protruding direction of the stopper pin 38c. The walk-in cable 39 is connected to the above. On the other hand, as shown in FIG. 5, a pin abutting portion 37 d is formed at the upper portion of the engagement / disengagement lever 37. The outer peripheral surface of the pin contact portion 37d is formed in an arc shape centering on the support shaft 38a in a state where the engagement / disengagement lever 37 is lowered and occupies the engagement position (K), and the end surface 37e of the pin contact portion 37d is formed. Is formed in an arc shape centering on the support shaft 37a. A point where the pin contact portion 37d and the end surface 37e intersect is set as a reference position P for indicating a position where the engagement / disengagement lever 37 rotates. A stopper portion 37f is formed to stop the movement of the stopper pin 38c.

  The pin abutting portion 37d is formed at the upper portion of the engaging / disengaging lever 37, and at the engaging position (K) where the engaging / disengaging portion 37b below the engaging / disengaging lever 37 is lowered and engaged with the memory base 32, the stopper pin When 38c occupies the lock position (A) at the upper left, it abuts against the stopper pin 38c and locks the engagement / disengagement lever 24 so as not to rotate counterclockwise, while the seat back is pulled forward to the walk-in cable 39. When the stopper pin 38c is moved to the lower right and occupies the unlocking position (B), the engagement / disengagement portion 37b below the engagement / disengagement lever 37 is allowed to move upward. And then turn to the upper separation position (R).

  The lower half of the engagement / disengagement lever 37 and the lower half of the lock release lever 38 enter the inside of the upper rail 2 through the opening 36 d formed in the memory bracket 36 and the opening 2 i formed in the upper rail 2. It is swiveling freely. The unlocking lever 38 is urged to the upper disengaging position (R) so that the engaging / disengaging portion 37b is disengaged from the memory base 32 and the stopper pin 38c is directed to the upper left locking position (A). A lever spring 40 is provided as lever urging means for urging. The lever spring 40 is disposed between the engagement / disengagement lever 37 and the lock release lever 38 as shown in FIG. 6, and a spring hooking portion 37g formed on the left side of the intermediate portion of the engagement / disengagement lever 37 in FIG. A spring hook 38e formed on the right side of the intermediate portion of the lock release lever 38 is provided so as to be connected.

  Next, the operation of the seat slide device will be described separately for the operation of the rail lock mechanism 6 and the operation of the memory mechanism 34.

First, the operation of the rail lock mechanism 6 will be described.
When the seat is locked at an arbitrary slide position, as shown in FIG. 6, the lock arm 8 receives a biasing force of the leaf spring 11 and occupies a state of rotational displacement in the clockwise direction. The lock claw 8 b of the lock arm 8 is inserted through three members: a lock hole 9 of the upper rail 2, a lock hole 14 of the lower rail 1, and a lock hole 10 of the upper rail 2.

  In order to change the seat from this state to a different position in the front-rear direction, the front part of an operation lever (not shown) is lifted upward to rotate. Then, the pressing portion 29a located at the rear end portion of the handle holder 29 presses the input arm portion 8c downward, and the lock arm 8 rotates counterclockwise against the urging force of the leaf spring 11 in FIG. As a result, the lock claw 8b of the lock arm 8 is pulled out from the three of the lock holes 10, 14, and 9 to be unlocked, and the upper rail 2 and the seat can be freely slid.

  In this state, the seat slide position is changed to an arbitrary position, and then the operation lever is released. Then, the lock arm 8 is restored to the original state by the urging force of the leaf spring 11, and the lock claw 8b is again inserted into the lock holes 10, 14, 9 as shown in FIG. The seat is fixed.

  Next, the operation of the memory mechanism 34 will be described with reference to FIGS.

  Before describing the memory mechanism 34, the relationship between the engagement / disengagement portion 37b of the engagement / disengagement lever 37, the memory base 32, and the memory rail 31 will be described. When the engagement / disengagement portion 37b is engaged with the memory base 32, the engagement / disengagement portion 37b presses and rotates the rotation plate 32b downward, so that the lower end of the engagement / disengagement portion 37b is lower than the position of the upper surface of the memory base 32. The memory base 32 moves on the memory rail 31 together with the engagement / disengagement part 37b. On the other hand, since the rotation plate 32b is rotated against the urging force of the engagement body spring, the engagement body 32d is moved upward and away from the engagement portion 31b of the memory rail 31, and the memory base 32 is used for the memory. Separate from the rail. On the contrary, when the engagement / disengagement portion 37b is detached from the memory base 32, the rotation plate 32b is rotated by the biasing force of the engagement body spring, and the engagement body 32d is moved downward to engage with the engagement portion 31b. The base 32 is fixed to the memory rail 31. That is, the memory base 32 is engaged with either the engagement / disengagement portion 37b or the memory rail 31.

  As shown in FIGS. 8 and 9, when the lock release lever 38 rotates about the support shaft 38a in the clockwise direction in the figure, the upper stopper pin 38c moves from the upper left lock position (A) to the lower right lock. Move to the release position (B). As a result, the engagement / disengagement lever 37 can rotate about the support shaft 37a, the right half of the engagement / disengagement lever 37 moves up or down, and the reference position P is the upper disengagement position (R) or the lower position. Occupy the engagement position (K). When the engagement / disengagement lever 37 occupies the upper disengagement position (R), the lock release lever 38 is engaged with the engagement / disengagement lever 37 occupying the disengagement position (R) to hold the lock release position (B). Even when the seat back is raised and the pull of the walk-in cable 39 does not act, the lock release lever 38 maintains the lock release position (B), and the engagement / release lever 37 maintains the release position (R).

  For example, in a two-door vehicle, when a seat back (not shown) is moved forward so that an occupant can get on and off the rear seat, the walk-in cable 39 is pulled. For this reason, as shown in FIG. 8A, the stopper pin 38c of the lock release lever 38 that has occupied the lock position (A) at the upper left is rotated clockwise around the support shaft 38a, as shown in FIG. 8B. It moves to the lower right unlocking position (B), and the pressing part 38b at the lower left end of the unlocking lever 38 presses the unlocking part 30 of the lock arm 8 upward. For this reason, the lock arm 8 rotates against the urging force of the leaf spring 11, and the lock of the upper rail 2 with respect to the lower rail 1 is released. Accordingly, the upper rail 2 is opened with respect to the lower rail 1. Further, as shown in FIG. 8B, when the lock release lever 38 rotates and the stopper pin 38c occupies the lower right lock release position (B), the stopper pin 38c is pin contact portion 37d of the engagement / disengagement lever 37. Therefore, the reference position P of the engagement / disengagement lever 37 urged counterclockwise by the urging force of the lever spring 40 as shown in FIG. 8C is rotated toward the upper disengagement position (R). Then, the portion on the right side of the support shaft 37 a of the engagement / disengagement lever 37 rises and the lower engagement / disengagement portion 37 b is detached from the memory base 32. For this reason, the rotation plate 32b of the memory base 32 is opened, the rotation plate 32b is rotated by the biasing force of the engagement body spring, and the engagement body 32d is moved down to the engagement portion 31b of the memory rail 31. The position of the memory base 32 is memory-on. Since the upper rail 2 is unlocked as described above and the engaging / disengaging portion 37b is detached from the memory base 32, the upper rail 2 is in a free state, and the upper rail 2 is, for example, a walk as shown in FIG. It slides forward along with the seat by the action of the in-spring.

  Even if the occupant gets on and off the rear seat and raises the seatback that is tilted forward, the stopper pin 38c is engaged with the end surface 37e, so that the lock release lever 38 maintains the lock release position (B). When the upper rail 2 is slid rearward together with the seat, the base contact portion 37c of the engagement / disengagement lever 37 contacts the stopper portion 32a of the memory base 32 as shown in FIG. Thus, the engagement / disengagement lever 37 is rotated clockwise. Then, as shown in FIG. 9C, the reference position P of the engagement / disengagement lever 37 moves to the lower engagement position (K), and the engagement / disengagement part 37b engages with the memory base 32. At this time, the engagement / disengagement portion 37b presses the rotating plate 32b downward against the urging force of the engagement body spring, and at the same time, the engagement body 32d moves upward to disengage from the engagement portion 31b of the memory rail 31. The memory base 32 is separated from the memory rail 31, and the position of the memory base 32 is turned off. Then, when the engagement / disengagement lever 37 rotates clockwise until the engagement / disengagement portion 37b is engaged with the memory base 32 as shown in FIG. 9D, the pin contact portion 37d is lowered and the stopper pin 38c is moved to the pin contact. The stopper pin 38c moves to the upper left lock position (A) by the action of the lever spring 40 and stops by hitting the stopper portion 37f because it is disengaged from the end surface 37e of the portion 37d. When the stopper pin moves to the upper left locked position (A), the upward movement of the pin contact portion 37d is prevented by the presence of the stopper pin 38c, and the engagement / disengagement lever 37 can be rotated to the upper disengagement position (R). Disappear. Simultaneously with the movement of the stopper pin 38c to the upper left lock position (A), the entire lock release lever 38 rotates counterclockwise, and the pressing portion 38b at the lower end thereof moves the lock release portion 30 of the lock arm 8. Since the unlocking portion 30 is allowed to rotate downward and the lock arm 8 is rotated by the urging force of the leaf spring 11, the upper rail 2 is locked again.

  In the state before the seat is moved, the upper rail 2 is locked by the seat lock mechanism 6, and the engagement / disengagement lever 37 is locked by the lock release lever 38 while being engaged with the memory base 32. At this time, the memory base 32 is stored in the memory base 32. It is separated from the rail 31 for use. When the seat back is tilted and the lock release lever 38 is rotated to the lower right lock release position (B) and the pressing portion 38b presses the lock release portion 30, the above action is brought about. When the seat release is raised and the lock release lever 38 returns to the upper left lock position (A) as described above, the engagement / disengagement lever 37 is locked, the pressing portion 38b opens the lock release portion 30, and the upper rail 2 is again turned on. Will be locked.

  When the normal front / rear position adjustment of the seat slide device is performed, the upper rail is released by operating the operation handle of the rail lock mechanism 6 to rotate the lock arm 8, and the upper rail 2 is appropriately moved back and forth together with the seat. Since the engaging / disengaging portion 37b of the engaging / disengaging lever 37 presses the rotating plate 32b and enters the position below the upper surface of the memory base 32, the memory base 32 is pushed by the engaging / disengaging portion 37b of the engaging / disengaging lever 37. It moves together with the upper rail 2. Therefore, the memory base 32 is connected to the upper rail 2 via the engagement / disengagement lever 37 and the memory bracket 21, and the memory base 32 is moved integrally with the upper rail 2 in the longitudinal direction of the memory rail 31 and moved to an arbitrary position. Even new positions can be set.

  In the present embodiment, the rotation axis of the lock arm is configured to be located inside the slit of the upper rail, but the position of the rotation axis may be located inside the upper rail. This is because it is sufficient that the unlocking portion formed on the lock arm can be pressed by the pressing portion of the unlocking lever located inside the upper rail.

1 is an exploded perspective view of a seat slide device (embodiment). The perspective view of the rail for memory (embodiment). The perspective view of memory base (embodiment). The top view which shows a part of seat slide apparatus (embodiment). Front sectional drawing which shows a part of seat slide apparatus (embodiment). AA arrow line view of FIG. 5 (embodiment). The perspective view which shows some seat slide apparatuses (embodiment). Explanatory drawing of operation until the seat back is moved forward and the seat moves forward (embodiment). Explanatory drawing of operation | movement until raising a sheet | seat and returning a sheet | seat back (embodiment).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lower rail 2 ... Upper rail 2i ... Opening part 8 ... Lock arm 11 ... Leaf spring (arm biasing means)
DESCRIPTION OF SYMBOLS 30 ... Lock release part 31 ... Memory rail 31b ... Engagement part 32 ... Memory base 32d ... Engagement body 35 ... Memory bracket (bracket)
37 ... engaging / disengaging lever 37b ... engaging / disengaging portion 37c ... base abutting portion 38 ... lock release lever 38b ... pressing portion 38c ... stopper pin 39 ... walk-in cable 40 ... lever spring (lever biasing means)

Claims (1)

A lower rail fixed to the floor of the vehicle body, an upper rail that is slidably mounted on the lower rail and has a seat coupled thereto, a lock arm that is rotatably provided inside the upper rail and locks the upper rail with respect to the lower rail, An arm urging means for urging the lock arm in a locking direction; and for rotating the lock arm in a direction to release the lock against the urging force of the arm urging means, formed integrally with the lock arm. The unlocking part of
A memory rail coupled to the inner bottom surface of the lower rail, a memory base movably provided along the memory rail, an engagement body provided on the memory base and engaged with and disengaged from the memory rail; Engagement body urging means for urging the engagement body in a direction of engaging;
An engaging / disengaging lever that is rotatably supported by the upper rail and has a lower portion that faces the inside of the upper rail through the opening of the upper rail, and formed at the lower end of the engaging / disengaging lever and simultaneously engages with the memory base. An engagement / disengagement part that disengages the engagement body from the memory rail against the urging force of the engagement body urging means, and a lower end portion of the engagement / disengagement lever that is formed in front of the vehicle body from the engagement / disengagement part. A base contact portion capable of contacting the memory base;
It is introduced into the upper rail through the opening, the intermediate part is rotatably supported by the upper rail, the upper end is connected to the seat back via the walk-in cable, and the lower part presses the unlocking part. A lock release lever formed with a pressing portion;
The engagement / disengagement part urges the engagement / disengagement lever that rotates between an engagement position where the engagement / disengagement unit is engaged with the memory base and a disengagement position where the engagement / disengagement part is disengaged toward the disengagement position, and the engagement / disengagement lever is engaged A lever urging means for urging the lock release lever that rotates between the lock position that locks at the position and the lock release position that is unlocked by pulling the walk-in cable toward the lock position. A seat slide device.

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