JP2010126083A - Seat sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat sliding device having a simple construction for reducing the number of components and reducing an occupied space. <P>SOLUTION: The seat sliding device includes an unlocking lever 38 turnably provided on a supporting bracket 36 fixed to an upper rail 2, a pressing portion 38b formed at one end of the unlocking lever 38 to press a pressed portion 8f of a locking arm 8, a lever spring 40 for rotating and energizing the unlocking lever 38 in the locking allowing direction, a walk-in cable 39 connected to the other end of the unlocking lever 38 and adapted to be pulled with the frontward fall of a seatback 43, a pushing portion 36f for pushing a clamped portion 32e to the front side of the vehicle body when the upper rail 2 is moved to the front side of the vehicle body, and a clamping portion 38f formed integrally with the unlocking lever 38 and adapted to be turned in the locking allowing direction to release an engaging portion 32d from an engaging groove 31b and to hold it with the pushing portion 36f at the same time. In the held condition, the engaging portion 32d is released from the engaging groove 31b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device, and a lock mechanism for locking an upper rail in conjunction with the seatback of a front seat being moved forward when an occupant gets on and off the rear seat by opening a door of a two-door vehicle or the like. This is related to a vehicle equipped with a walk-in mechanism in which the lock is released and the entire seat moves forward together with the upper rail.

  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 have a memory mechanism for storing them. An example of a seat slide device provided with the memory mechanism is disclosed in Patent Document 1.

As shown in FIG. 2 of Patent Document 1, since the cable 121b (see FIG. 6) is loose when the backrest is standing, the locking element 221 rotates clockwise and presses the follower 203 downward. It becomes. For this reason, as shown in FIG. 5C, the locking claw 104 is pushed by the follower 203 and is rotated counterclockwise, and the detent hook 141 is moved upward, so that the locking claw 104 and the slide 105 are attached to the seat. Move together. On the other hand, as shown in FIG. 3, since the cable 121b is pulled when the backrest is tilted forward, the locking element 221 opens the follower 203, and the opened follower 203 is moved up by the action of the elastic element 232 And the locking claw 104 is engaged with the ratchet rail 107 so that the memory position is stored. If the seat is retracted while the backrest is tilted forward, the holding portion 201 will be retracted while the follower 203 is moved upward, and the side surface of the holding portion 201 is brought into contact with the locking claw 104 as shown in FIG. In contact, the backward movement of the seat stops at the memory location. By causing the backrest in this state, the follower 203 is lowered while being locked by the fixing device 120, the locking claw 104 is rotated, and the locking claw 104 and the slide 105 that are detached from the ratchet rail 107 are integrated with the seat. You can move. Further, when the seat is retracted with the backrest raised, the follower 203 is lowered, so that as shown in FIG. 5A, the locking claw 104 locked in advance at the memory position moves from left to right. The follower 203 approaches. As shown in FIG. 4, the locking pawl 104 is formed with a tapered ramp 146 (see FIG. 4), so that the lower end section 234 ′ of the follower 203 is interposed via the ramp 146 as shown in FIG. As shown in FIG. 5 (c), it moves to the depression 145 ′. At this time, since the stop portion 127 regulates the upward movement of the stop portion 147, the holding portion 201 moves backward when the lower end section 234 ′ moves and enters the recess 145 ′ without the locking claw 104 being detached from the ratchet rail 107. Since the stop portion 127 also moves backward, the stop portion 147 can be moved upward. Accordingly, the detent hook 141 is detached from the ratchet rail 107, and the slide 105 and the locking claw 104 are released from the ratchet rail 107. Therefore, the locking claw 104 and the slide 105 are united with the holding portion 201 and move together with the seat.
JP-T-2004-526626

  However, the seat slide device described in Patent Document 1 has a complicated configuration for allowing the follower 203 to enter the recess 145 ′ of the locking claw 104 when the seat is retracted while the backrest is tilted forward. There are many parts, and the holding part 201 occupies a large space as shown in FIG.

  In addition, the walk-in mechanism includes a type that locks at the memory position when the seat is moved backward with the backrest tilted forward as in Patent Document 1, and a lock at the memory position when the seat is moved backward while causing the backrest. However, it is difficult to share parts because the operation is different and the structure is different.

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

  According to a first aspect of the present invention, there is provided a lower rail fixed to a floor surface of a vehicle body, an upper rail that is slidably mounted on the lower rail and a seat is coupled to the lower rail, and the upper rail is rotatably provided to the lower rail. Lock arm for locking or unlocking the upper rail, arm biasing means for biasing the lock arm in the locking direction, and unlocking direction for unlocking the lock arm against the biasing force of the arm biasing means An unlocked pressed portion formed on the lock arm, a memory rail coupled to the lower rail, an engagement groove formed at a constant pitch on the memory rail, and the memory A memory base movably provided along the rail, a rotating member rotatably provided on the memory base, and the rotating member An engagement portion provided on the front side of the vehicle body that engages and disengages from the engagement groove, a clamped portion provided on the engagement portion, and formed between the clamped portion and the engagement portion. A recess, a rotation member urging means for urging the rotation member in an engagement direction in which the engagement portion engages with the engagement groove, a support bracket fixed to the upper rail, and a support bracket An unlocking lever that is pivotably provided via a first pivot shaft, and an unlocked lever that is formed at one end of the unlocking lever and rotates the unlocking lever in the unlocking direction. A pressing portion for unlocking to be pressed, a first lever urging means for urging the unlocking lever in a lock permitting direction opposite to the unlocking direction, the other end of the unlocking lever, and a seat back; For seat-back advance operation A connecting member that moves and rotates the unlocking lever in the unlocking direction against the urging force of the first lever urging means, and the upper rail formed on the support bracket moves when the upper rail moves forward of the vehicle body. A push-out portion capable of pushing the clamped portion forward of the vehicle body; and a pull-up clamp portion that is formed integrally with the lock release lever and engages with the concave portion of the rotating member, and the lock release direction of the lock release lever The lifting clamp portion pulls up the clamped portion of the rotating member by rotating the clamp member to remove the engagement portion from the engagement groove, and the clamped portion between the pulling clamp portion and the push-out portion. It is characterized in that it is held with a portion in between.

  According to the present invention, when the seat back is moved forward while the seat is locked at a predetermined position set by the occupant, the unlocking lever is rotated in the unlocking direction by being pulled by the connecting member, and the unlocking pressing portion is At the same time as the unlocking pressed portion of the lock arm is pressed to release the lock, the lifting clamp portion releases the holding of the clamped portion performed with the pushing portion of the support bracket. As a result, the engaging portion engages with the engaging groove by the urging force of the rotating member urging means, and the memory base is memory-on to the memory rail. The upper rail is released from the lower rail, and the opened upper rail moves to the front of the vehicle body by the urging force of the seat urging means or the like while leaving the memory base at the memory position, and occupies the front position.

  After the occupant moves up and down between the outside of the door and the seat behind the seat, when the seat is moved backward while the seat back is tilted forward, the engaging portion engages with the engaging groove and the memory is turned on. The lifting clamp portion engages with the concave portion of the moving member, and the seat stops at a predetermined memory position set by the occupant. After that, when the seat back is raised, the connecting member pulled by the seat back becomes free, so the urging force of the first lever urging means causes the lock release lever to turn in the lock allowable direction and return to the original position. To do. For this reason, when the pressing of the unlocked pressed portion by the unlocking pressing portion is released, the lifting clamp portion pulls up the clamped portion, and at the same time the sheet is locked at the memory position, the rotating member rotates. The memory base is then turned off with respect to the memory rail. Then, the lifting clamp portion holds the clamped portion again with the pushing portion of the support bracket, and the upper rail joins with the memory base and returns to a predetermined position where it can move.

  According to a second aspect of the present invention, in the seat slide device according to the first aspect, by causing the seat back of the seat moved forward of the vehicle body, the lock release lever rotates in the lock allowable direction, and in this state A taper surface is formed on the clamped part for engaging the pulling clamp part and rotating the pulling clamp part in a direction to engage the concave part when the sheet is retracted. .

  According to the present invention, the operation is the same as that of the first aspect until the upper rail moves together with the seat to the front of the vehicle body, and when the seat back is erected while the upper rail occupies the front position, the connected connection is pulled. Since the member becomes free, the unlocking lever is rotated in the lock allowable direction by the biasing force of the first lever biasing means, and the pressing of the unlocked pressed portion by the unlocking pressing portion is released simultaneously with the lifting clamp Department occupies the lifting position. Therefore, the lock arm rotates in the locking direction, and the upper rail is locked at the foremost lock position of the lower rail. If the upper rail is unlocked manually in this state, the seat can be moved back and forth.

  With the seat back in the upright position, the upper rail is manually unlocked and the seat is moved to the position where the memory base at the rear of the vehicle body is turned on. Abutting on the taper surface of the part and moving backward. At this time, since the extruded portion is positioned on the clamped portion and the clamped portion cannot rotate, the lifting clamp portion is pulled down by the function of the taper surface and the lock release lever is rotated. Engages the recess. Simultaneously with the engagement of the pull-up clamp portion with the recess, the push-out portion is disengaged from above the clamped portion, so the pull-up clamp portion pulls up the clamped portion by the biasing force of the first lever biasing means, and the push-out portion of the support bracket The clamp member is sandwiched between and held at this time. At this time, the rotating member is rotated and the engaging portion is moved upward, the engaging portion is detached from the engaging groove, and the memory base is moved relative to the memory rail. To return to the memory-off state. When the unlocking of the upper rail is stopped manually, the upper rail is locked.

  According to a third aspect of the present invention, there is provided a lower rail fixed to a floor surface 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 on the upper rail. Lock arm for locking or unlocking the upper rail, arm biasing means for biasing the lock arm in the locking direction, and unlocking direction for unlocking the lock arm against the biasing force of the arm biasing means An unlocked pressed portion formed on the lock arm, a memory rail coupled to the lower rail, an engagement groove formed at a constant pitch on the memory rail, and the memory A memory base movably provided along the rail, a rotating member rotatably provided on the memory base, and the rotating member An engagement portion provided on the front side of the vehicle body that engages and disengages from the engagement groove, a clamped portion provided on the engagement portion, and formed between the clamped portion and the engagement portion. A recess, a rotation member urging means for urging the rotation member in an engagement direction in which the engagement portion engages with the engagement groove, a support bracket fixed to the upper rail, and a support bracket An unlocking lever that is pivotably provided via a first pivot shaft, and an unlocked lever that is formed at one end of the unlocking lever and rotates the unlocking lever in the unlocking direction. A pressing portion for unlocking to be pressed, a first lever urging means for urging the unlocking lever in a lock permitting direction opposite to the unlocking direction, the other end of the unlocking lever, and a seat back; For seat-back advance operation A connecting member that moves and rotates the unlocking lever in the unlocking direction against the urging force of the first lever urging means, and the upper rail formed on the support bracket moves when the upper rail moves forward of the vehicle body. A push-out portion capable of pushing the clamped portion forward of the vehicle body; and a pull-up clamp portion that is formed integrally with the lock release lever and engages with the concave portion of the rotating member, and the lock release direction of the lock release lever The pulling clamp part pulls up the clamped part of the pivoting member to engage with the recess and removes the engaging part from the engaging groove, and the lifting clamp part and the pushing part A clamping pin that is held between the clamped portion and the other end of the unlocking lever, and a second time disposed above the first rotation shaft. A regulation lever provided rotatably via a moving shaft, and a lock release position formed on the regulation lever and engaged with the regulation pin so that the unlocking pressing part presses the unlocking pressed part. A restricting portion that holds the unlocking lever, a second lever urging means that urges the restricting lever to rotate in a direction in which the restricting portion engages with the restricting pin, and a vehicle body front of the rotating member in the restricting lever. A contact portion disposed on the side, and when the seat moved to the front of the vehicle body is retracted, the contact portion contacts the rotating member or the memory base, thereby The restriction lever rotates in a direction in which the engagement between the portion and the restriction pin is released.

  According to the present invention, when the unlocking lever pulled by the connecting member with the seat back moved forward is rotated in the unlocking direction, the unlocking pressing portion presses the unlocking pressed portion of the lock arm to lock. Simultaneously with the release, the lifting clamp part releases the holding of the clamped part performed with the pushing part of the support bracket. As a result, the engaging portion of the rotating member urged by the urging force of the rotating member urging means engages with the engaging groove, and the memory base is turned on. When the upper rail is released from the lower rail, the opened upper rail moves to the front of the vehicle body by the urging force of the seat urging means or the like while leaving the memory base at the memory position, and occupies the front position. At this time, the restricting lever is rotated in the rotation restricting direction by the urging force of the second lever urging means, and the restricting portion of the restricting lever is engaged with the restricting pin, whereby the lock releasing lever is rotated in the lock permitting direction. Is regulated. For this reason, even when the seat back is raised thereafter, the restricting portion formed on the restricting lever is engaged with the restricting pin and the rotation of the unlocking lever is restricted even though the pulled connecting member is returned. Is maintained. Therefore, even if the seat back is raised, the unlock lever does not rotate in the lock permission direction from the unlock position, and the upper rail is not locked to the lower rail. Then, when the seat is retracted with the seat back standing, the contact portion formed on the restriction lever comes into contact with the turning member or the memory base, the restriction lever is turned, and the restriction portion engages with the restriction pin. Out of position. For this reason, the unlocking lever is rotated in the locking allowable direction by the biasing force of the first lever biasing means, and the unlocking pressing part releases the pressing of the unlocking pressed part of the lock arm and at the same time the lifting clamp part is In order to lift the clamped portion and rotate the rotating member, the engaging portion is removed from the engaging groove and the memory base is turned off with respect to the memory rail. At the same time, the lifting clamp portion and the pushing portion of the support bracket The clamped part is held between the two. Accordingly, the lock arm is rotated and locked in the locking direction by the urging force of the arm urging means, and at the same time, the upper rail is united with the memory base.

  According to the seat slide device of the first aspect, the memory base constituting the memory mechanism and the mechanical control of the rotating member are formed at one end of the support bracket, the lock release lever, and the lock release lever. An unlocking pressing portion; a first lever urging means for urgingly energizing the unlocking lever; a connecting member that couples the other end of the unlocking lever to the seat back; and an extrusion portion formed on the support bracket. And a lifting clamp unit formed integrally with the lock release lever, the configuration is simple, the number of parts is small, and the occupied space is small.

  According to the seat slide device of the second aspect, when the seat back is moved forward and the seat is moved forward, the upper rail is locked when the seat back is first raised. In this case, the upper rail is manually moved. When the lock is released and the seat is moved to the memory-on position at the rear of the vehicle body, the upper rail can be combined with the memory base and returned to the predetermined position. Therefore, even when the seat back is raised first, the memory base and the upper rail are united and returned to a predetermined position where the seat can be moved integrally by releasing the lock and moving the seat to the memory-on position behind the vehicle body. It becomes possible.

  According to the seat slide device according to the third aspect, in addition to the components of the seat slide device according to the first aspect, the restriction lever is provided, and the seat back is raised to the memory position after the seat is moved forward. The sheet sliding device can be used as a type of seat sliding device in which the seat is locked when the seat is moved, and the seat is locked when the seat is moved to the memory position in a state where the seat back is moved forward. Many parts can be shared with the seat slide device.

Embodiments 1 and 2 of the seat slide device according to the present invention will be described below.
(A) Embodiment 1
First, the first embodiment will be described. FIG. 1 is a block diagram of the seat slide device, and FIGS.

  As shown in FIG. 1, the seat slide device includes a lower rail 1 that is fixed to a vehicle floor, and an upper rail 2 that is attached to the left and right positions on the lower surface of the seat. The cross-sectional shape of the lower rail 1 is formed by extending a downward bent portion 1a bent inwardly at the upper end of a substantially U-shaped basic cross-sectional portion having an upper opening, and the cross-sectional shape of the upper rail 2 is similarly lower. An upward bent portion 2a bent outward is formed at the lower end of the substantially inverted U-shaped basic cross-section opening. The upper rail 2 is assembled such that the lower bent portion 1a of the lower rail 1 is sandwiched between the side wall portion 2b of the upper rail 2 and the upward bent portion 2a. Both ends of the lower rail 1 are fixed to the vehicle floor via bolts (not shown). On the other hand, the upper rail 2 is attached to the left and right positions on the lower surface of the seat via bolts (not shown).

  The upper rail 2 is incorporated in the lower rail 1 so as to be slidable in the length direction via guide balls 4 and 5 held by the retainer 3. Specifically, the retainer 3 is assembled in a free state between the lower rail 1 and the upper rail 2, and the guide ball 5 held by the retainer 3 supports the lower surface of the upward bent portion 2a of the upper rail 2, and the guide ball 4 guides the side surface of the upward bent portion 2 a of the upper rail 2.

  Between the lower rail 1 and the upper rail 2 configured as described above, there is provided locking means 6 for sliding the upper rail 2 along the lower rail 1 and locking it at an arbitrary position. The lock means 6 includes a bearing bracket 12, a lock arm 8 rotatably supported by the bearing bracket 12, and lock holes 9, 10, and 14 formed in the upper rail 2 and the lower rail 1. . The upper rail 2 is locked with respect to the lower rail 1 by inserting the lock claw 8 b of the lock arm 8 into the lock holes 9, 10, and 14.

  The bearing bracket 12 is constructed by assembling three parts, and the lock arm 8 and the bearing bracket 12 are mounted in the upper rail 2 as follows. The bearing bracket 12 is configured by combining a pair of bearing members 12c, 12c and a connecting member 12d for connecting them, and the bearing members 12c on both sides are connected to the upper wall portion 2c of the upper rail 2 via two rivets 13. Connected to the bottom surface.

  The relationship between the lock arm 8 and the bearing bracket 12 will be described with reference to FIG. A pair of first slits 2d are formed on the side surfaces of the upper rail 2 at the front and rear positions of the vehicle body. The first slit 2d is formed from the side wall 2b of the upper rail 2 to the upper wall 2c. A lock arm 8 and a bearing bracket 12 that rotatably supports the lock arm 8 are provided inside the upper rail 2. The lock arm 8 is formed with a pair of arm portions parallel to each other at both ends of the main body portion, a bearing portion 8g is formed at the tip of the pair of arm portions, and a shaft hole is formed in each bearing portion 8g. On the other hand, a pair of bearing portions 12a is formed at both ends of the substantially U-shaped bearing bracket 12, and a rotating shaft 12b is formed to protrude from the opposing surface of the bearing portion 12a by embossing. With the rotary shaft 12b fitted in the shaft hole, the bearing portion 8g of the lock arm 8 and the bearing portion 12a of the bearing bracket 12 are inserted into the first slit 2d from the inside of the upper rail 2, respectively. ing.

  Four lock claws 8b are formed between a pair of arms on the circumference of a circle separated from the rotation shaft 12b of the lock arm 8 by a predetermined radius and at the lower end of the main body portion of the lock arm 8. Yes. Then, the lock arm 8 is manually operated from the outside of the upper rail 2 so that the lock arm 8 is rotated and unlocked, so that the input arm portion 8 c is integrally formed at the upper end of the main body portion of the lock arm 8. . The input arm portion 8c extends between the pair of arm portions and extends in the radial direction through the position of the axis of the rotating shaft 12b. Between the pair of first slits 2d of the upper rail 2, a second slit 2k is formed from the side wall portion 2b to the upper wall portion 2c, and the input arm portion 8c extends from the second slit 2k to the outside of the upper rail 2. It protrudes diagonally upward. In addition, a pressed portion (unlocked pressed portion) 8f is formed along the direction in which the four lock claws 8b are arranged. As shown in FIG. 1A, the pressed portion 8f protrudes in the opposite direction to the lock claw 8b.

  A leaf spring (arm urging means) 11 is provided in order to constantly urge the lock arm 8 rotatably attached to the inside of the upper rail 2 in the lock direction in this way. That is, the base end portion of the leaf spring 11 bent into a “<” shape is coupled to the inner surface of the side wall portion 2 b of the upper rail 2, while the distal end portion is slidable on the inner surface of the side wall portion 2 b of the upper rail 2. The intermediate portion is in contact with the surface opposite to the side from which the lock claw 8b of the lock arm 8 protrudes.

  The four lock holes 9, 10 are formed on the side wall portion 2b and the upward bent portion 2a of the upper rail 2 in correspondence with the number of the lock claws 8b. A large number of the lock holes 14 are formed in the downward bent portion 1a of the lower rail 1 along the length direction. The lock holes 9, 10, 14 have substantially the same height as the lock holes because the lock claw 8 b is inserted and engaged when locked. The pitch of these lock holes is the same as the pitch of the lock claws 8b.

  Next, the lock release means for releasing the lock of the upper rail 2 by the lock means 6 will be described. A holding bracket (not shown) is attached to the upper surface of the upper wall portion 2 c of the upper rail 2. A handle holder (not shown) is rotatably provided on the holding bracket, and a handle (not shown) for pressing the input arm portion 8c is provided on the handle holder. The tip of the operation handle is inserted through the handle holder. The operation handle is bent in a substantially U shape, the middle part is located in the front of the vehicle body, both end parts are located on the left and right below the seat, and the lock arm 8 can be rotated synchronously by the both end parts. it can.

  In addition, a walk-in mechanism is provided for sliding the seat forward when the seat back is moved forward. When the walk-in mechanism operates, the position of the seat, that is, the position of the upper rail 2 is stored in advance. A memory mechanism 34 is provided. The memory mechanism 34 is configured as follows. A memory rail 31 disposed along the length direction of the lower rail 1 is coupled to the inner bottom surface of the lower rail 1. The memory rail 31 is formed with a claw portion 31a, and an engagement groove 31b is formed between the claw portions 31a. The pitch of the engagement grooves 31b is set to be the same as the pitch of the lock claws 8b. The claw portions 31a are provided at positions facing each other, and each claw portion 31a is bent into a U-shaped cross section. Here, when the upper rail 2 is disposed at a position where the lock claw 8b enters the lock hole 10 of the lower rail 1, the engagement portion 32d described later does not engage with the engagement groove 31b, and the engagement portion 32d. Is located on the claw portion 31a. That is, the memory rail 31 is ¼ in the length direction relative to the position where the engagement of the lock claw 8b with the lock hole 10 and the engagement of the engagement hole 32b with the engagement groove 31b are performed simultaneously. It is fixed to the lower rail 1 while being shifted by a 1/2 pitch.

  The memory rail 31 is provided with a memory base 32 slidable along the memory rail 31. The memory base 32 is a U-shaped block when viewed from above, and a groove 32a guided by the tip of the claw portion 31a of the memory rail 31 is formed in the lower part of both side surfaces. In the memory base 32, a rotating member 32b is rotatably provided via a horizontal shaft 32c. Engaging portions 32d that engage with and disengage from the engaging grooves 31b are provided at the left and right lower portions of the rotating member 32b in front of the vehicle body. Projecting downward. A clamped portion 32e is formed on the upper portion of the engagement portion 32d in front of the vehicle body. A recessed portion 32f is formed between the clamped portion 32e and the engaging portion 32d, and a stepped portion 32g is formed on the upper surface of the rotating member 32b.

  A mechanism for operating the memory base 32 is disposed on the vehicle body rear side of the locking means 6. A horizontal portion 36 a of a support bracket 36 is coupled to the upper surface of the upper rail 2 via two rivets 13. One of the two rivets 13 also serves to mount the bearing bracket 12. The support bracket 36 is formed with an upper vertical portion 36b extending upward on one end face of the horizontal portion 36a, and the other end face enters the inside of the upper rail 2 through an opening 2m formed on the upper surface of the upper rail 2. A lower vertical portion 36c extending downward is formed. An opening 36d communicating with the opening 2m is formed in the horizontal portion 36a of the support bracket 36.

  An intermediate portion of the lock release lever 38 is rotatably supported by the lower vertical portion 36c via a first rotation shaft 38a. The lower half of the lock release lever 38 enters the upper rail 2 through the opening 36d formed in the horizontal portion 36a of the support bracket 36 and the opening 2m formed in the upper rail 2. Yes. At the lower end of the lock release lever 38, when the lock release lever 38 is rotated clockwise, which is the unlocking direction (U), the pressed portion 8f of the lock arm 8 is pressed upward, and the lock arm 8 There is formed a pressing portion (unlocking pressing portion) 38b that rotates in the unlocking direction. The pressing portion 38b is formed by bending a part thereof into an L shape to form a horizontal portion.

  There is provided a lever spring (first lever urging means) 40 that urges the lock release lever 38 to rotate in the lock permissible direction (R) opposite to the unlock direction (U). The lever spring 40 is provided between a spring hook portion 38e formed on the rear side of the intermediate portion of the lock release lever 38 and a spring hook portion 36g formed on the upper vertical portion 36b.

  One end of a walk-in cable (connecting member) 39 is connected to the unlocking lever 38 in order to rotate the unlocking lever 38 in the unlocking direction (U) against the urging force of the lever spring 40 by tilting the seat back forward. The other end of the walk-in cable 39 is connected to the seat back. That is, the connecting portion of the walk-in cable 39 to the lock release lever 38 is configured as follows. As shown in FIG. 1B, a restriction pin 38c is provided through the upper end portion of the lock release lever 38, and a connecting portion 38d is formed on one end side of the restriction pin 38c. The walk-in cable 39 is connected to the above. The other end of the regulating pin 38c protruding in the horizontal direction in the direction opposite to the direction in which the connecting portion 38d protrudes is inserted into an arcuate guide hole 36e formed in the upper vertical portion 36b of the support bracket 36. ing. For this reason, when the walk-in cable 39 is pulled, the lock release lever 38 rotates in the clockwise direction in the drawing, the pressing portion 38b presses the pressed portion 8f upward, and the lock of the upper rail 2 is released.

  When the engaging portion 32d of the rotating member 32b is placed on the claw portion 31a, the support bracket 36 is engaged with the step portion 32g to push the clamped portion 32e forward of the vehicle body. 36f is formed. On the other hand, the lock release lever 38 is integrally formed with a lifting clamp portion 38f. The lifting clamp portion 38f is formed at a height position that enters the recess 32f of the rotating member 32b when the pressing portion 38b is in a position where the pressed portion 8f of the lock arm 8 is pressed and unlocked. Then, when the lock release lever 38 is rotated in the lock allowable direction (R), the clamped portion 32e is engaged with the concave portion 32f of the rotating member 32b and the clamped portion 32e is lifted to be clamped between the extruded portion 36f. It is for holding 32e in between. By this pulling up, the engaging portion 32d is disengaged from the engaging groove 31b against the urging force of the engaging spring 32h.

  In the state in which the stepped portion 32g is held by the clamped portion 38f and the pushing portion 36f, the engaging portion 32d is disengaged from the engaging groove 31b and the memory base 32 extends along the memory rail 31. It is formed so that it can move. An engaging spring (rotating member) that urges the rotating member 32b to rotate the rotating member 32b counterclockwise to engage the engaging portion 32d with the engaging groove 31b of the memory rail 31. (Urging means) 32h is provided.

The walk-in cable 39 is loosened with the seat back of the seat moved forward of the vehicle body, the lock release lever 38 is rotated by the urging force of the lever spring 40, and the pressing portion 38b is in a position where it does not press the pressed portion 8f. Then, the lifting clamp portion 38f becomes the lifting clamp position. For this reason, when the sheet is retracted in this state, the lifting clamp portion 38f does not engage with the concave portion 32f and comes into contact with the front surface of the clamped portion 32e, so that the clamped portion 32e cannot be lifted. The part 32e cannot be held. For this reason, a tapered surface 32i inclined toward the recess 32f is formed on the front surface of the clamped portion 32e. By forming the tapered surface 32i in this way, when the lifting clamp portion 38f at the lifting clamp position moves backward and engages with the tapered surface 32i of the clamped portion 32e, the pushing portion 36f is located before the memory position. Is positioned above the clamped portion 32e to prevent the rotation of the rotation member 32b, so that the lifting clamp portion 38f is lowered along the tapered surface 32i, and the lock release lever 38 is rotated clockwise, The lifting clamp portion 38f can be engaged with the recess 32f.
(Function)
Next, the operation of the seat slide device will be described separately for the operation of the lock means 6 and the operation of the memory mechanism 34. First, the operation of the locking means 6 will be described.

  When the seat is locked at an arbitrary slide position, as shown in FIG. 1 (b), the lock arm 8 receives the urging force of the leaf spring 11 and occupies a state of rotational displacement in the clockwise direction. At this time, the lock claw 8 b of the lock arm 8 is inserted into three of the lock holes 9 and 10 of the upper rail 2 and the lock hole 14 of the lower rail 1, and the upper rail 2 is locked to the lower rail 1.

  When the seat is changed from this state to a different position in the front-rear direction, the handle holder is rotated by pulling the front of a U-shaped operation lever (not shown) upward. Then, a pressing portion (not shown) located at the rear end portion of the handle holder presses the input arm portion 8c downward, and the lock arm 8 is rotated counterclockwise against the urging force of the leaf spring 11, thereby The lock claw 8b of the lock arm 8 is pulled out from the three of the lock holes 9, 10, and 14 to be unlocked, and the upper rail 2 and the seat can be freely slid.

  In this state, the upper rail 2 is moved with respect to the lower rail 1, 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 three of the lock holes 9, 10, and 14 to return to the locked state of FIG. The upper rail 2 and the seat are fixed.

  Next, the operation of the walk-in mechanism will be described.

  According to the present invention, the operation shown in FIGS. As shown in FIG. 2, in a state where the passenger is seated at a predetermined position where the occupant is sitting and the occupant can sit, the seat back 43 stands with respect to the seat cushion 42, and the seat itself is located on the rear side of the vehicle body. When the seat back 43 is moved forward as shown in FIG. 3 from this state, the walk-in cable 39 is pulled, so that the lock release lever 38 rotates in the lock release direction (U), and the pressing portion 38 b is pressed by the lock arm 8. The portion 8f is pressed to release the lock, and at the same time, the lifting clamp portion 38f releases the holding portion 32e held between the support bracket 36 and the pushing portion 36f. At this time, as shown in FIG. 3, since the engaging portion 32d is placed on the claw portion 31b, the cranked portion 32e is positioned in front of the pushing portion 36f. As a result, the upper rail 2 is released from the lower rail 1, and the opened upper rail 2 is moved forward by the urging force of the seat urging means or the like as shown in FIG. Then, at the initial stage of the forward movement of the upper rail 2, the pushing portion 36f of the support bracket 36 pushes the clamped portion 32e and further the entire memory base 32 to the front of the vehicle body to the position where the engaging portion 32d overlaps the engaging groove 31b. Thus, the engaging portion 32d is engaged with the engaging groove 31b by the urging force of the engaging spring 32h, and the memory base 32 is memory-on to the memory rail 31. When the engaging portion 32d engages with the engaging groove 31b, the clamped portion 32e moves away from the front of the pushing portion 36f and moves downward, and the upper rail 2 moves the memory base 32 and the rotating member 32b to the memory position. Move to the front of the car body.

  After the occupant ascends and descends between the outside of the door and the seat behind the seat, when the seat is retracted while the seat back 43 is moved forward as shown in FIG. 5, the rotating member of the memory base 32 in which the memory is turned on The pull-up clamp portion 38f comes into contact with the concave portion 32f of the 32b, thereby restricting further rearward movement of the sheet. Thereafter, when the seat back 43 is erected as shown in FIG. 6, the pulled-in walk-in cable 39 is returned, so that the unlocking lever 38 is rotated in the lock permissible direction (R) by the biasing force of the lever spring 40, Return to the original position. For this reason, as shown in FIG. 7, since the pressing of the pressed portion 8f by the pressing portion 38b is released and the lifting clamp portion 38f is engaged with the clamped portion 32e and pulled up, the rotating member 32b rotates. When the engaging portion 32d is moved upward, the engaging portion 32d is detached from the engaging groove 31b, and the memory base 32 is turned off from the memory rail 31. At the same time, the lifting clamp portion 38f is pushed out of the support bracket 36. The clamped portion 32e is held again with 36f, and the upper rail 2 is united with the memory base 32. As described above, the engagement position between the engagement portion 32d and the engagement groove 31b and the engagement position between the lock claw 8b and the lock hole 10 are set to be shifted by 1/4 to 1/2 pitch. When the seat is further retracted slightly from this state, as shown in FIG. 8, when the engaging portion 32d moves from the engaging groove 31b to the claw portion 31a, it is urged by the leaf spring 11. The lock claw 8b of the lock arm 8 is rotated, and the lock claw 8b is inserted into the lock holes 9, 10, and 14 to enter the locked state and return to a predetermined position as shown in FIG.

  According to the present invention, when the seat back 43 is not moved forward as described above but the seat is raised and retracted, the operation shown in FIGS.

  Until the upper rail 2 moves together with the seat to the front of the vehicle body, it is the same as the operation of FIGS. 2 to 4 described above, and when the seat back 43 is first raised while the upper rail occupies the front position, it is pulled. Since the walk-in cable 39 is returned, the unlocking lever 38 is rotated in the lock allowable direction (R) by the biasing force of the lever spring 40 as shown in FIG. 9, and the pressed portion 8f is pressed by the pressing portion 38b. Simultaneously with the release, the lifting clamp portion 38f occupies the lifting position. Therefore, since the lock arm 8 is urged in the locking direction by the urging force of the leaf spring 11, the upper rail 2 is locked at the foremost lock position of the lock hole 10 of the lower rail 1. If the upper rail 2 is unlocked manually in this state, the seat can be moved back and forth.

  When the front portion of the operation handle of the unlocking means (not shown) is pulled up with the seat back 43 standing, the pressing portion of the handle holder attached to the rear portion of the operation handle presses the input arm portion 8c of the lock arm 8 shown in FIG. Then, the lock of the upper rail 2 is manually released. When the seat is moved to a position where the memory base 32 at the rear of the vehicle body is memory-on in the released state, the lifting clamp portion 38f occupying the lifting position as described above is formed on the clamped portion 32e as shown in FIG. Abutting on the taper surface 32i and moving backward. At this time, as shown in FIGS. 10 and 11, since the pushing portion 36f is positioned above the clamped portion 32e and the turning member 32b cannot turn clockwise, the function of the tapered surface 32i The tip of the lifting clamp portion 38f is pulled down against the biasing force of the lever spring 40, and the lock release lever 38 is slightly rotated in the unlocking direction (U), whereby the lift clamp portion 38f is engaged with the recess 32f. Match. When the seat is retracted to the position shown in FIG. 12, the extruded portion 36f below the support bracket 36 is disengaged from the clamped portion 32e of the rotating member 32b and relatively moves toward the stepped portion 32g. The rotating member 32b can be rotated in the lifting direction. For this reason, as shown in FIG. 13, the unlocking lever 38 is rotated in the lock allowable direction (R) by the biasing force of the lever spring 40, the lifting clamp portion 38f is raised to the lifting clamp position, and the lifting clamp portion 38f is the support bracket. The clamped portion 32e is held again with the extruding portion 36f of 36, and the upper rail 2 is united with the memory base 32. At this time, the rotating member 32b is rotated to move the engaging portion 32d upward, whereby the engaging portion 32d is detached from the engaging groove 31b and the memory base 32 is in a memory-off state with respect to the memory rail 31. Returned to If the seat is further moved back and forth in this state, the memory base 32 moves on the memory rail 31 together with the seat, and when the hand is released from the operation handle (not shown), the plate is moved as shown in FIG. The lock claw 8b of the lock arm 8 biased by the spring 11 rotates, the lock claw 8b is inserted into the lock holes 9, 10, and 14, and the upper rail 2 enters a locked state and returns to a predetermined position.

  According to the present invention, the mechanical control of the memory base 32 and the rotating member 32 b constituting the memory mechanism 34 is formed at the support bracket 36, the lock release lever 38, and one end of the lock release lever 38. A pressing portion 38b; a lever spring 40 that urges the lock release lever 38 to rotate; a walk-in cable 39 that connects the other end of the lock release lever 38 to the seat back 43; and an extrusion formed on the support bracket 36. Since the configuration is made by the portion 36f and the lifting clamp portion 38f formed integrally with the lock release lever 38, the configuration is simple, the number of parts is small, and the occupied space is small.

According to the present invention, when the seat back 43 is moved forward and the seat is moved forward, the upper rail 2 is locked when the seat back 43 is first raised. In this case, the upper rail 2 is manually locked. When the seat is released and the seat is moved to the memory-on position at the rear of the vehicle body, the upper rail 2 can be combined with the memory base 32 and returned to the predetermined position. Therefore, even when the seat back 43 is first raised, the memory base 32 and the upper rail 2 are united by releasing the lock and moving the seat to the memory-on position at the rear of the vehicle body. It is possible to return to a predetermined position where it can move.
(B) Embodiment 2
Next, a second embodiment will be described. Since the second embodiment is obtained by adding parts to the first embodiment, description of the same part is omitted, and only a different part will be described.
(Constitution)
As shown in FIG. 15, the second embodiment is obtained by adding a regulating lever 7 to the first embodiment. The restriction lever 7 is rotatably provided on the upper vertical portion 36b of the support bracket 36 via the second rotation shaft 7a disposed above the first rotation shaft 38a. A circular arc part 7b and a restricting part 7c are formed in the upper right of the upper part on the rear side of the restricting lever 7. The arc portion 7b is a portion that allows the lock release lever 38 to rotate together with the regulating pin 38c in the lock allowable direction (R) in which the lifting clamp portion 38f is pulled up, and is in sliding contact with the regulating pin 38c. Thus, it is also a part that regulates the counterclockwise rotation of the regulating lever 7 in the drawing, and the arc portion 7b is formed in an arc centered on the center of the first rotating shaft 38a. On the other hand, the restricting portion 7c is a portion that restricts the lock release lever 38 from rotating together with the restricting pin 38c in the lock permissible direction (R), and the second rotating shaft 7a is centered on the right end surface of the arc portion 7b. Is formed so as to be recessed inward in the radial direction. The restricting portion 7c is formed in a step shape continuously with the arc portion 7b, and the restricting portion 7c is restricted when the pressing portion 38b of the lock release lever 38 presses the pressed portion 8f of the lock arm 8 to release the lock. The restricting portion 7c of the lever 7 is engaged with the restricting pin 38c. A contact portion 7 f is formed at the lower portion of the regulating lever 7. The contact portion 7f is moved downward (L), which is a direction in which the restriction portion 7c is detached from the restriction pin 38c when the upper rail 2 is retracted and the contact portion 7f is brought into contact with the clamped portion 32e. It is provided to rotate the regulating lever 7. Further, a lever spring that rotates and urges the restriction lever 7 to the upper position (H) in which the restriction portion 7c of the restriction lever 7 engages with the restriction pin 38c and restricts the rotation of the restriction pin 38c (the second spring). (Lever biasing means) 40 is provided between a spring hooking portion 7g formed on the front side of the intermediate portion of the regulating lever 7 and a spring hooking portion 38e of the lock release lever 38. In other words, in the second embodiment, the lever spring 40 serves as both the first lever urging means for urging the lock release lever 38 and the second lever urging means for urging the regulating lever 7. Therefore, in the second embodiment, the restriction lever 7 and the second rotating shaft 7a are added to the first embodiment, and one end of the lever spring 40 that is locked to the support bracket 36 is replaced with the restriction lever 7. Other configurations are the same.
(Function)
Next, the operation will be described.

  According to the present invention, the following effects are obtained. FIG. 16 shows a state of a predetermined position of a seat on which an occupant can be seated. In this state, as shown in FIG. 17, when the seat back 43 is moved forward and the walk-in cable 39 is pulled, the lock release lever 38 is rotated in the lock release direction (U), and the pressing portion 38 b is engaged with the lock arm 8. The pressing portion 8f is pressed upward to release the lock, and at the same time, the lifting clamp portion 38f releases the hold of the clamped portion 32e that has been held between the pushing portion 36f of the support bracket 36. At this time, as shown in FIG. 17, since the engaging portion 32d is placed on the claw portion 31b, the clamped portion 32e is located in front of the pushing portion 36f. Further, although the regulation pin 38c is disengaged from the circular arc portion 7b, the regulation lever 7 cannot be rotated with the contact portion 7f coming into contact with the clamped portion 32e, so that the regulation portion 7c and the regulation pin 38c are not engaged at this time. As a result, the upper rail 2 is released from the lower rail 1, and the opened seat is moved forward by the urging force of the seat urging means or the like as shown in FIG. 18, and occupies the front position. When the upper rail 2 moves forward, the pushing portion 36f pushes the clamped portion 32e forward, so that the entire memory base 32 is pushed and the engaging portion 32d comes to the position of the engaging groove 31b. Then, the engaging portion 32d of the rotating member 32b urged by the urging force of the engaging spring 32h is engaged with the engaging groove 31b, and the memory base 32 is memory-on to the memory rail 31. Then, the regulating lever 7 moves together with the upper rail 2 to the front of the vehicle body, and the abutting portion 7f is separated from the clamped portion 32e, so that the regulating lever 7 is rotated upward (H) by the biasing force of the lever spring 40. The restricting portion 7c of the lever 7 engages with the restricting pin 38c, thereby restricting the lock releasing lever 38 from rotating in the lock permissible direction (R). For this reason, as shown in FIG. 19, when the seat back 43 is subsequently raised, the restricting portion 7c formed on the restricting lever 7 is connected to the restricting pin 38c even though the walk-in cable 39 that has been pulled is returned. The state that restricts the rotation is maintained. Therefore, the lock release lever 38 does not rotate in the lock allowable direction (R), and the upper rail 2 is not locked with respect to the lower rail 1. Then, as shown in FIG. 20, when the seat is retracted with the seat back 43 standing, the contact portion 7f formed on the restriction lever 7 comes into contact with the clamped portion 32e, and the restriction lever 7 moves downward (L). As shown in FIG. 21, the restricting portion 7c is disengaged from the engagement position with the restricting pin 38c. For this reason, the lock release lever 38 is rotated in the lock allowable direction (R) by the urging force of the lever spring 40, and the pressing portion 38b opens the pressed portion 8f of the lock arm 8 and at the same time, the lifting clamp portion 38f is moved into the recess 32f. The clamped portion 32e is engaged and lifted upward to hold the clamped portion 32e with the pushing portion 36f of the support bracket 36, and the upper rail 2 is united with the memory base 32. Then, as described above, the engagement position between the engagement portion 32d and the engagement groove 31b and the engagement position between the lock claw 8b and the lock hole 10 are set to be shifted by 1/4 to 1/2 pitch. Therefore, when the sheet is further retracted after this, as shown in FIG. 22, when the engaging portion 32d moves from the engaging groove 31b to the claw portion 31a, it is urged by the leaf spring 11. The lock claw 8b of the lock arm 8 is rotated, and the lock claw 8b is inserted into the lock holes 9, 10, and 14 to be locked and return to a predetermined position. In the second embodiment, the action when the seat is moved rearward with the seat back 43 tilted forward is the same as that in the first embodiment, and a description thereof will be omitted.

  According to the present invention, in addition to the components of the seat slide device according to the first aspect, the seat back 43 is erected after the seat is moved forward by only providing the regulating lever 7 and the second rotating shaft 7a. When the seat is moved to the memory position, the seat can be used as a seat slide device in which the seat is locked. When the seat is moved to the memory position with the seat back 43 moved forward, the seat is locked. Many components can be shared with the seat slide device according to the first aspect. Further, the contact portion 7f of the regulating lever 7 is engaged with the clamped portion 32e of the rotating member 32b. However, an engaging portion may be provided in another part of the rotating member 32b, and the memory base 32 is further provided. An engaging portion may be provided.

1 is a front cross-sectional view of a seat slide device, and FIG. 4B is a cross-sectional view taken along line AA in FIG. Explanatory drawing of the state which a sheet occupies a predetermined position (Embodiment 1). Explanatory drawing of the state which advanced the seat back (Embodiment 1). Explanatory drawing of the state which advanced the seat back and the sheet | seat moved forward (Embodiment 1). Explanatory drawing of the state which moved the sheet | seat which moved forward to back (Embodiment 1). Explanatory drawing in the middle of raising a seat back by moving a seat back (Embodiment 1). Explanatory drawing of the state which moved the sheet | seat back and stood the seat back (Embodiment 1). FIG. 5 is an explanatory diagram of a state in which the seat is retracted and the seat back is raised and further retracted a little to lock the seat (Embodiment 1). Explanatory drawing when the seat back is set up when the seat moves forward (Embodiment 1). Explanatory drawing in the middle of raising the seat back and retracting the seat as it is when the seat moves forward (Embodiment 1). Explanatory drawing in the middle of raising the seat back and retracting the seat as it is when the seat moves forward (Embodiment 1). Explanatory drawing in the middle of raising the seat back and retracting the seat as it is when the seat moves forward (Embodiment 1). Explanatory drawing which shows the state which retracted the sheet | seat and hold | maintained the clamped part (Embodiment 1). Explanatory drawing of the state which retracted the sheet | seat, hold | maintained the to-be-clamped part, and further retracted, and the sheet | seat was locked (Embodiment 1). (A) is front sectional drawing, (b) is a BB arrow line view of (a) (embodiment 2). Explanatory drawing of the state for which a sheet occupies a predetermined position (Embodiment 2). Explanatory drawing of the state which advanced the seat back (Embodiment 2). Explanatory drawing of the state which advanced the seat back and the sheet | seat moved forward (Embodiment 2). Explanatory drawing of the state which stood the seat back of the sheet | seat moved forward (Embodiment 2). Explanatory drawing in the middle of making the seat back of the sheet | seat moved forward and moving it back (Embodiment 2). Explanatory drawing in the middle of making the seat back of the sheet | seat moved forward and moving it back (Embodiment 2). Explanatory drawing which shows the state which stood the seat back of the sheet | seat which moved forward, moved it back, and the sheet | seat was locked (Embodiment 2).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lower rail 2 ... Upper rail 7 ... Restriction lever 7a ... 2nd rotating shaft 7b ... Arc part 7c ... Restriction part 7f ... Contact part 8 ... Lock arm 8f ... Pressed part (pressed part for unlocking)
11 ... leaf spring (arm biasing means)
31 ... rail for memory 31b ... engaging groove 32 ... memory base 32b ... rotating member 32d ... engaging portion 32e ... clamped portion 32h ... engaging spring (rotating member biasing means)
32i ... Tapered surface 36 ... Support bracket 36f ... Pushing portion 38 ... Lock release lever 38a ... First rotating shaft 38b ... Pressing portion (unlocking pressing portion)
38c ... Restriction pin 38f ... Lifting clamp part 39 ... Walk-in cable (connection member)
40 ... Lever spring (first lever biasing means, second lever biasing means)

Claims (3)

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, and a lock that is rotatably provided on the upper rail and locks or unlocks the upper rail with respect to the lower rail An arm, an arm urging means for urging the lock arm in a locking direction, and the lock arm for rotating in the unlocking direction to unlock the lock arm against the urging force of the arm urging means A pressed portion for unlocking formed on,
A memory rail coupled to the lower rail, an engagement groove formed in the memory rail at a constant pitch, a memory base movably provided along the memory rail, and a rotation to the memory base A pivot member provided movably, an engagement portion provided on the vehicle body front side of the pivot member and engaging / disengaging with the engagement groove, a clamped portion provided on the engagement portion, A recess formed between the clamped portion and the engagement portion, and a rotation member urging means for urging the rotation member in an engagement direction in which the engagement portion engages with the engagement groove. When,
A support bracket fixed to the upper rail, a lock release lever rotatably provided on the support bracket via a first rotation shaft, and unlocking the lock release lever formed at one end of the lock release lever An unlocking pressing portion that presses the unlocking pressed portion when rotated in a direction, and a first lever biasing that biases the unlocking lever in a lock permitting direction opposite to the unlocking direction. And the other end of the lock release lever and the seat back are connected, and the lock release lever is rotated in the lock release direction against the urging force of the first lever urging means in conjunction with a forward tilting operation of the seat back. A connecting member to be moved; and a pushing portion formed on the support bracket and capable of pushing the clamped portion forward of the vehicle body when the upper rail moves forward of the vehicle body. And a pulling clamp portion for engaging the recess of the rotary member is formed integrally with the unlocking lever,
By the rotation of the unlocking lever in the lock allowable direction, the lifting clamp portion pulls up the clamped portion of the rotating member to remove the engaging portion from the engaging groove, and the lifting clamp portion and the A seat slide device, characterized in that the clamped portion is held between the push-out portion and the push-out portion. The seat slide device according to claim 1,
By causing the seat back of the seat moved to the front of the vehicle body, the unlocking lever rotates in the lock allowable direction, and when the seat is retracted in that state, the lifting clamp portion is engaged and the lifting is performed. A seat slide device, wherein a taper surface for rotating a clamp portion in a direction to engage with the concave portion is formed on the clamped portion. 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, and a lock that is rotatably provided on the upper rail and locks or unlocks the upper rail with respect to the lower rail An arm, an arm urging means for urging the lock arm in a locking direction, and the lock arm for rotating in the unlocking direction to unlock the lock arm against the urging force of the arm urging means A pressed portion for unlocking formed on,
A memory rail coupled to the lower rail, an engagement groove formed in the memory rail at a constant pitch, a memory base movably provided along the memory rail, and a rotation to the memory base A pivot member provided movably, an engagement portion provided on the vehicle body front side of the pivot member and engaging / disengaging with the engagement groove, a clamped portion provided on the engagement portion, A recess formed between the clamped portion and the engagement portion, and a rotation member urging means for urging the rotation member in an engagement direction in which the engagement portion engages with the engagement groove. When,
A support bracket fixed to the upper rail, a lock release lever rotatably provided on the support bracket via a first rotation shaft, and unlocking the lock release lever formed at one end of the lock release lever An unlocking pressing portion that presses the unlocking pressed portion when rotated in a direction, and a first lever biasing that biases the unlocking lever in a lock permitting direction opposite to the unlocking direction. And the other end of the lock release lever and the seat back are connected, and the lock release lever is rotated in the lock release direction against the urging force of the first lever urging means in conjunction with a forward tilting operation of the seat back. A connecting member to be moved; and a pushing portion formed on the support bracket and capable of pushing the clamped portion forward of the vehicle body when the upper rail moves forward of the vehicle body. And a pulling clamp portion for engaging the recess of the rotary member is formed integrally with the unlocking lever,
By the rotation of the unlocking lever in the lock allowable direction, the lifting clamp portion pulls up the clamped portion of the rotating member to remove the engaging portion from the engaging groove, and the lifting clamp portion and the Hold the clamped part between the extruding part,
A restriction pin provided integrally with the other end of the unlocking lever; a restriction lever provided rotatably via a second turning shaft disposed above the first turning shaft; and the restriction lever A restricting portion that is engaged with the restricting pin and holds the unlocking lever at a lock releasing position where the unlocking pressing portion presses the unlocked pressed portion, and the restricting portion is engaged with the restricting pin. A second lever urging means for urging and urging the restriction lever in a direction to be joined, and a contact portion disposed on the vehicle body front side of the rotating member in the restriction lever,
When the seat moved forward of the vehicle body is retracted, the contact portion comes into contact with the rotating member or the memory base, so that the restriction portion of the restriction lever and the restriction pin are disengaged. A seat slide device in which the regulating lever is rotated.

Images