JP2015027841A - Seat slide device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide device for a vehicle which has a higher degree of freedom of adjustment while ensuring high reliability by a simple configuration.SOLUTION: A seat slide device 10 includes an upper rail 6 which supports a seat thereon, and a lower rail 5 which relatively movably supports the upper rail 6 along an extension direction thereof. The seat slide device 10 also includes a lock lever 30 which can restrict the relative movement of the upper rail 6 by being engaged with the lower rail 5 in a state of being supported by the upper rail 6. The seat slide device 10 further includes a first position adjustment mechanism 51 which can adjust a movement position of the upper rail 6 by changing a relative position of the lock bar 30 engaged with the lower rail 5, and a second position adjustment mechanism 62 which can adjust the movement position of the upper rail 6 by changing the relative position of the lock bar 30 supported by the upper rail 6.

Description

  The present invention relates to a vehicle seat slide device.

  2. Description of the Related Art Generally, a vehicle seat slide device includes an upper rail that supports a seat upward, and a lower rail that supports the upper rail so as to be relatively movable along the extending direction. In many cases, such a seat slide device is provided with a lock mechanism capable of restricting the relative movement of the upper rail with respect to the lower rail.

  For example, the seat slide device described in Patent Document 1 includes a lock lever that can be rotated around a rotation axis that intersects the extending direction of the upper rail. Further, the lower rail is provided with engaging portions that can engage with the lock lever at a plurality of positions in the extending direction. The lock mechanism can regulate the relative movement of the upper rail by rotating the lock lever to engage the engaging portion on the lower rail side.

  As described above, conventionally, the locking mechanism of the seat slide device allows the relative movement of the upper rail by engaging and disengaging the lock lever supported by the upper rail with the engaging portion of the lower rail, and the movement thereof. The position is fixed. By using this to change the movement position of the upper rail, it is possible to adjust the slide position of the seat.

JP 2010-100077 A

  However, in a seat slide device for a vehicle, the lock mechanism is required to have a high lock strength that can withstand an impact load at the time of a vehicle collision. The lock strength is determined by the shape of the claw and groove forming the engaging portions of the lock lever and the lower rail, the interval (forming pitch) for forming these engaging elements, and the like. For this reason, it is difficult to increase the positions where the lock levers can be engaged, and as a result, there is a problem that the degree of freedom of adjustment of the seat slide position is limited. In this respect, there is still room for improvement. It was.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat slide device having a high degree of freedom of adjustment while ensuring high reliability with a simple configuration. There is.

  A vehicle seat slide device that solves the above problems, an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable along an extending direction, and a lower rail that is supported by the upper rail and engages with the lower rail. Thus, a first position adjustment mechanism capable of adjusting the movement position of the upper rail by changing the relative position between the lock lever capable of restricting the relative movement of the upper rail and the lower rail and the lock lever engaged with the lower rail. And a second position adjusting mechanism capable of adjusting a moving position of the upper rail by changing a relative position between the upper rail and the lock lever supported by the upper rail.

  According to the above configuration, it is possible to form two position adjustment mechanisms that can adjust the movement position of the upper rail with a simple configuration. By using these two position adjustment mechanisms in combination, the degree of freedom in adjustment can be increased while ensuring high reliability.

  A vehicle seat slide device that solves the above-described problem includes an operation handle that is operated to adjust a slide position of the seat, and the lower rail and the upper rail are respectively connected to the lock lever at a plurality of positions in the extending direction. An engagement portion is provided that can be engaged and can fix the relative position of the lock lever in the extending direction by the engagement, and the first position adjustment mechanism is based on an operation input to the operation handle. The relative position of the lock lever engaged with the lower rail can be changed by engaging and disengaging the lock lever with a first engagement portion provided on the lower rail, and the second position adjusting mechanism includes Based on an operation input to the operation handle, the lock lever is coupled to a second engagement portion provided on the upper rail. Te By disengaging, be capable of changing the relative position of the supported the lock lever to the upper rail is preferred.

  According to the above configuration, the first position adjustment mechanism and the second position adjustment mechanism that can be operated using one operation handle and can reliably adjust the movement position of the upper rail are formed. As a result, the fine adjustment of the seat slide position can be easily performed.

  In the vehicle seat slide device that solves the above problem, the lock lever is supported by the upper rail so as to be rotatable about a rotation axis that intersects the extending direction based on an operation input to the operation handle, and Each of the first engaging portion and the second engaging portion has a plurality of groove portions into which insertion portions provided on the lock lever are inserted when the lock lever rotates. It is preferable that the insertion depth of the insertion portion with respect to the second groove portion on the engagement portion side is set shallower than the insertion depth of the insertion portion with respect to the first groove portion on the first engagement portion side.

  According to the said structure, the engagement state of the lock lever with respect to a lower rail and an upper rail can be switched based on the operation amount of an operation handle. As a result, it is possible to form the first position adjustment mechanism and the second position adjustment mechanism that operate based on an operation input to one operation handle with a simple configuration.

  That is, by adjusting the operation amount of the operation handle, the lock lever is rotated and engaged with both the first engagement portion and the second engagement portion, or these first engagement portion and second engagement portion. It is possible to create a state in which the lock lever engages with the first engagement portion and does not engage with the second engagement portion in the middle of the operation of detaching from both the joint portions. Then, by limiting the movement range of the upper rail, it is possible to easily finely adjust the seat slide position.

In the vehicle seat slide device that solves the above-described problem, it is preferable that the formation pitch of each of the first groove portions is an integral multiple of the formation pitch of each of the second groove portions.
According to the above configuration, the insertion portion of the lock lever can be smoothly moved to the second engagement portion side without interfering with the first groove portions (convex portions constituting the first engagement portion side). It can be inserted into and removed from the second groove part.

  In the vehicle seat slide device that solves the above-described problem, the upper rail has a pair of side wall portions arranged to face each other, and the lock lever is supported between the side wall portions and formed on the side wall portion. The side wall portion has a lock engagement portion that can be engaged with and disengaged from the first engagement portion provided on the lower rail based on an operation input to the operation handle by being inserted into the lock insertion hole. Preferably, the second engaging portion is formed so that the lock engaging portion can be engaged and disengaged based on the operation input.

  According to the above configuration, it is possible to form the first position adjustment mechanism and the second position adjustment mechanism that operate based on an operation input to one operation handle with a simple configuration. Furthermore, by changing the relative position of the lock lever within the lock insertion hole, for example, even when the lock engagement portion is detached from the second engagement portion due to an external force such as a collision load, the The inner wall of the lock insertion hole located in the relative movement direction functions as a stopper that can lock the lock engagement portion. And thereby, high reliability can be ensured. In addition, by providing fail-safe in this way, it is possible to increase the degree of freedom of adjustment for the second engagement portion by increasing the positions where the lock engagement portion can be engaged. As a result, the slide position of the sheet can be adjusted more finely.

  In the vehicle seat slide device that solves the above-described problem, the upper rail has a pair of side wall portions arranged to face each other, and the lock lever has a support shaft that is inserted into a support hole provided in the both side wall portions. And the support hole has a hole shape that allows the support shaft to move in the radial direction, and the support hole has an operation input to the operation handle. It is preferable that the second engaging portion is formed so that the support shaft can be engaged and disengaged.

  According to the above configuration, it is possible to form the first position adjustment mechanism and the second position adjustment mechanism that operate based on an operation input to one operation handle with a simple configuration. Further, by changing the relative position of the lock lever within the support hole, for example, even when the support shaft of the lock lever is detached from the second engagement portion due to an external force such as a collision load, The inner wall of the support hole located in the relative movement direction functions as a stopper capable of locking the support shaft. And thereby, high reliability can be ensured. In addition, by providing fail-safe in this way, it is possible to increase the degree of freedom of adjustment by increasing the position where the support shaft can be engaged with the second engagement portion. As a result, the slide position of the sheet can be adjusted more finely.

  In the vehicle seat slide device that solves the above-described problem, the lock lever can be engaged with and disengaged from the first engagement portion provided on the lower rail by rotating around the support shaft based on the operation input. A lock having a lock engaging portion that can hold the state in which the lock engaging portion engages with the first engaging portion by urging the lock lever and rotating the lock lever. A biasing member and a support member capable of holding a state where the support shaft is engaged with the second engagement portion by urging the lock lever and pressing the support shaft against the second engagement portion. An urging member, and the second position adjusting mechanism is configured such that the lock engaging portion is against the urging force of the supporting urging member by the rotation of the lock lever based on the operation input. Before detaching from the engaging part, Said supporting shaft against the biasing force of the energizing member is adapted to detach from said second engagement portion is preferable.

  According to the said structure, the engagement state of the lock lever with respect to a lower rail and an upper rail can be switched based on the operation amount of the operation handle. That is, by adjusting the operation amount of the operation handle, it is possible to create a state in which the lock lever engages with the first engagement portion and does not engage with the second engagement portion. Then, by limiting the movement range of the upper rail, it is possible to easily finely adjust the seat slide position.

In the vehicle seat slide device that solves the above problem, it is preferable that the biasing force of the support biasing member is set to be weaker than the biasing force of the locking biasing member.
According to the above configuration, the support shaft can be detached from the second engagement portion before the lock engagement portion is detached from the first engagement portion.

  According to the present invention, it is possible to increase the degree of freedom of adjustment while ensuring high reliability with a simple configuration.

The side view which shows schematic structure of the vehicle seat and a seat slide apparatus. The perspective view of a seat slide apparatus. (A) is a top view of a seat slide device, (b) is a sectional view (III-III section) of a seat slide device in a 1st embodiment. FIG. 3 is an exploded perspective view of the seat slide device according to the first embodiment. Sectional drawing of the seat slide apparatus in 1st Embodiment (VV cross section in FIG.3 (b), locked state). Sectional drawing of the seat slide apparatus in 1st Embodiment (VI-VI cross section in FIG.3 (b), locked state). Sectional drawing of the lower rail in 1st Embodiment (VII-VII cross section in FIG. 6, a locked state and an unlocked state). Sectional drawing of the upper rail in 1st Embodiment (VIII-VIII cross section in FIG. 6, a locked state and an unlocked state). Sectional drawing of the seat slide apparatus in 1st Embodiment (IX-IX cross section in FIG. 6, a locked state and an unlocked state). Sectional drawing of the lower rail in 1st Embodiment (VII-VII cross section in FIG. 6, a half lock state). Sectional drawing of the upper rail in 1st Embodiment (VIII-VIII cross section in FIG. 6, a half lock state). Sectional drawing of the seat slide apparatus in 1st Embodiment (IX-IX cross section in FIG. 6, a half lock state). Explanatory drawing of an effect | action of the seat slide apparatus in 1st Embodiment. Action | operation explanatory drawing of the seat slide apparatus in 1st Embodiment (VIII-VIII cross section in FIG. 6, the time of back fine adjustment). Explanatory drawing of an effect | action of the seat slide apparatus in 1st Embodiment (VIII-VIII cross section in FIG. 6, the time of a front fine adjustment). The disassembled perspective view of the seat slide apparatus in 2nd Embodiment. (A) is sectional drawing (III-III cross section in Fig.3 (a)) in case the seat slide apparatus in 2nd Embodiment is in a locked state, (b) is the seat slide apparatus in 2nd Embodiment. Sectional drawing when is in the unlocked state (III-III cross section in FIG. 3A). Sectional drawing of the seat slide apparatus in 2nd Embodiment (XVIII-XVIII cross section in Fig.17 (a), a locked state). Sectional drawing of the upper rail in 2nd Embodiment (XIX-XIX cross section in FIG. 18, locked state). Sectional drawing of the seat slide apparatus in 2nd Embodiment (XX-XX cross section in FIG.17 (b), a half-locked state and an unlocked state). Sectional drawing of the upper rail in 2nd Embodiment (XXI-XXI cross section in FIG. 20, a half-locked state and an unlocked state). (A) and (b) are the operation explanatory views of the seat slide device in a 2nd embodiment (XIX-XIX section in Drawing 18, the time of back fine adjustment). (A) and (b) are the operation explanatory views of the seat slide device in a 2nd embodiment (the XIX-XIX section in Drawing 18, the time of front fine adjustment).

(First embodiment)
Hereinafter, a first embodiment relating to a vehicle seat slide device will be described with reference to the drawings.
As shown in FIG. 1, a vehicle seat 1 is provided on a seat cushion 2, a seat back 3 provided to be tiltable with respect to a rear end portion of the seat cushion 2, and an upper end of the seat back 3. The headrest 4 is provided.

  As shown in FIGS. 1 and 2, the floor F of the vehicle is provided with a pair of lower rails 5 extending in the front-rear direction of the vehicle, and the lower rails 5 are relatively moved on the lower rails 5. An upper rail 6 is mounted. The seat 1 (the seat cushion 2) is supported on each of the upper rails 6.

  That is, in the present embodiment, the seat slide device 10 is formed by the lower rail 5 and the upper rail 6. The vehicle occupant uses the function of the seat slide device 10 to adjust the position of the seat 1 in the vehicle front-rear direction (the left-right direction in FIG. 1) in which the lower rail 5 and the upper rail 6 are extended. Be able to.

  More specifically, as shown in FIGS. 3A and 3B and FIGS. 4 to 6, the lower rail 5 is a flat bottom wall portion serving as a fixed portion to the vehicle floor F (see FIG. 1). 11 is provided. In addition, outer wall portions 12 are erected at both ends in the width direction (left and right direction in FIG. 5) of the bottom wall portion 11, and at the upper ends (upper end portions in FIG. 5) of each outer wall portion 12. Are formed with flange-shaped upper wall portions 13 extending inward in the width direction. An inner wall portion 14 is formed at the tip of each upper wall portion 13 so as to be folded back downward.

  On the other hand, the upper rail 6 includes a pair of side wall portions 15 that face each other in the width direction. Further, the upper rail 6 includes a plate-like upper wall portion 16 that connects the both side wall portions 15. The upper rail 6 of the present embodiment is configured such that the upper rail body 18 having a substantially U-shaped cross section formed by the both side wall portions 15 and the upper wall portion 16 is disposed between the inner wall portions 14 on the lower rail 5 side. It is mounted on the lower rail 5.

  As shown in FIGS. 5 and 6, the upper rail 6 of the present embodiment includes a folded portion 23 that is folded back in a flange shape from the lower end of each side wall portion 15 toward the outer side in the width direction. Then, the folded portion 23 is disposed in a space surrounded by the outer wall portion 12, the upper wall portion 13, and the inner wall portion 14 constituting the lower rail 5, so that the relative movement in the upward direction and the width direction with respect to the lower rail 5 is achieved. Are now regulated.

  In the present embodiment, the ball-shaped rolling element 24 is interposed between the outer wall portion 12 of the lower rail 5 and the folded portion 23 of the upper rail 6 that face each other in the width direction as described above. In the present embodiment, these rolling elements 24 roll in sliding contact with the outer wall portion 12 of the lower rail 5 and the turn-up portion 23 of the upper rail 6 to ensure smooth relative movement of the upper rail 6 with respect to the lower rail 5. ing.

  As shown in FIGS. 3B and 4 to 6, the seat slide device 10 of the present embodiment includes a lock lever 30 that can be engaged with the lower rail 5 by being supported by the upper rail 6. ing. In the present embodiment, a lock mechanism 31 that can restrict the relative movement of the upper rail 6 with respect to the lower rail 5 is formed based on the engagement relationship between the lock lever 30 and the lower rail 5.

  Specifically, as shown in FIGS. 3B, 4, and 5, the upper rail 6 of the present embodiment is provided with a support shaft 32 that intersects the extending direction of the upper rail 6. Specifically, both side wall portions 15 constituting the upper rail body 18 are provided with support holes 33 penetrating the side wall portions 15. The support shaft 32 is inserted between the support holes 33 so as to be spanned between the side wall parts 15 in a manner substantially orthogonal to the side wall parts 15.

  On the other hand, the lock lever 30 has a pair of side plate portions 34 extending in the extending direction of the upper rail 6 and an upper plate portion 35 connecting the upper ends of the side plate portions 34. Each side plate portion 34 is formed with an insertion hole 36 that faces each other. The lock lever 30 of the present embodiment is formed by the support shaft 32 formed by inserting the support shaft 32 spanned between the both side wall portions 15 of the upper rail 6 into both the insertion holes 36. It is possible to rotate around the rotation axis L.

  Further, as shown in FIGS. 3B, 4, and 6, a substantially flat lock engaging portion 37 is provided at the tip 30 a of the lock lever 30. Further, each side wall portion 15 of the upper rail 6 is formed with a lock insertion hole 38 through which the lock engaging portion 37 is inserted at a position corresponding to the tip 30 a of the lock lever 30. And the lock lever 30 of this embodiment becomes a structure which the lock engagement part 37 which protrudes in the width direction outer side of the upper rail 6 via the said lock engagement part 37 engages / disengages with the lower rail 5 by the rotation. Yes.

  More specifically, the lower rail 5 of the present embodiment is formed with engaging portions (first engaging portions 41) that can engage the lock engaging portions 37 of the lock lever 30 at a plurality of positions in the extending direction. ing.

  Specifically, a plurality of engaging claws 40 projecting downward are formed on both inner wall portions 14 of the lower rail 5 located on the outer side in the width direction of the upper rail body 18. In the present embodiment, the engaging claws 40 are formed in a comb-teeth shape at substantially equal intervals. Further, the lock insertion hole 38 formed in each side wall portion 15 of the upper rail 6 has a hole shape that allows the lock engagement portion 37 inserted through the lock insertion hole 38 to move up and down. The lock engagement portion 37 is formed with a plurality of through holes 42 into which the engagement claws 40 formed on the lower rail 5 are inserted and removed based on the rotation of the lock lever 30. ing.

  In other words, as shown in FIG. 7, the first engagement portion 41 on the lower rail 5 side is downward (downward in the figure), that is, the tip 30 a of the lock lever 30 moves as the lock lever 30 rotates. A plurality of groove portions (first groove portions 43) that are open in the direction of turning. Further, as shown in FIGS. 4, 6, and 7, the lock engaging portion 37 of the present embodiment has a rod-like portion left by forming each through hole 42 so that the lock lever 30 rotates. Accordingly, the insertion portions 44 are inserted into the first groove portions 43 formed between the engagement claws 40 as described above. In this embodiment, the relative position of the lock lever 30 that engages with the lower rail 5 is fixed based on the engagement relationship between the lock engagement portion 37 and the first engagement portion 41. Yes.

  That is, the lock lever 30 of the present embodiment engages with the first engagement portion 41 of the lower rail 5 by rotating in the direction in which the tip 30a moves upward. And the lock lever 30 is comprised so that it may detach | leave from the 1st engaging part 41 of the lower rail 5 by rotating in the direction which the front-end | tip 30a moves below.

  As shown in FIGS. 1 to 4, the seat slide device 10 of the present embodiment includes an operation handle 45 that is operated to adjust the slide position of the seat 1. The lock lever 30 is configured to rotate based on an operation input to the operation handle 45.

  More specifically, as shown in FIGS. 3B and 4, the lock mechanism 31 of the present embodiment urges the lock lever 30 so that the lock engagement portion 37 provided at the tip 30 a has the lower rail. A spring member 46 is provided as a locking urging member capable of maintaining a state of being engaged with the fifth first engaging portion 41.

  In the present embodiment, the spring member 46 is formed by further bending the folded wire. Further, the spring member 46 has a hooking portion 46c bent in a substantially arc shape between the bent end portion 46a and the both open end portions 46b. Further, the lock lever 30 of the present embodiment has an opening 47 above the support shaft 32 where the upper plate portion 35 is not provided. The spring member 46 is disposed between the side plate portions 34 of the lock lever 30 in such a manner that the bent end portion 46 a protrudes to the outside of the lock lever 30 through the opening 47.

  Specifically, in the spring member 46 of the present embodiment, the latching portion 46 c is latched with respect to the support shaft 32 of the lock lever 30 from above. Thus, the bent end portion 46a of the spring member 46 comes into contact with the upper wall portion 16 of the upper rail from the lower side, and both open end portions 46b thereof are the tip 30a (lock engaging portion) of the lock lever 30. 37) is configured to abut against the lower side.

  That is, the spring member 46 of the present embodiment urges the lock lever 30 to rotate counterclockwise in FIG. 3B, thereby causing the lock engagement portion 37 provided at the tip 30a to move. It is configured to be engaged with the first engaging portion 41 of the lower rail 5. Thus, the lock lever 30 is held in a state where the lock engagement portion 37 is engaged with the first engagement portion 41 of the lower rail 5 when the operation handle 45 is not operated normally. It has become.

  On the other hand, as shown in FIGS. 1 to 4, the operation handle 45 of the present embodiment has a long bar-shaped operation portion 45 a extending in a direction substantially orthogonal to the extending direction of the upper rail 6. And the insertion part 45b inserted in the said each upper rail main body 18 from the front side of each upper rail 6 is formed in the both ends of the operation part 45a, respectively. Note that the operation handle 45 of the present embodiment is formed by bending a pipe material.

  Further, as shown in FIGS. 3B and 4, the lock lever 30 of the present embodiment has a narrow portion 48 in the vicinity of the rear end 30 b. The operation handle 45 is connected to the rear end 30b of the lock lever 30 in such a manner that the narrow portion 48 of the lock lever 30 is inserted into both tubular insertion portions 45b.

  Furthermore, the lock mechanism 31 of this embodiment includes a spring member 49 for maintaining the state where the operation handle 45 and the lock lever 30 are connected in this manner. In the present embodiment, the spring member 49 is also formed by further bending a folded wire. Specifically, the spring member 49 has a bent end portion 49a and an extended portion 49b extending from the bent end portion 49a along the extending direction of the lock lever 30 to be widened. And the bending end part 49a is externally fitted by the said insertion part 45b in the aspect contact | abutted from the downward side with respect to the insertion part 45b of the said operation handle 45. As shown in FIG.

  The spring member 49 is attached to the lock lever 30 in such a manner that the open end portion 49c abuts against the upper plate portion 35 of the lock lever 30 from below. In this embodiment, the connection state between the operation handle 45 and the lock lever 30 is held based on the elastic force of the spring member 49.

  That is, the operation handle 45 of the present embodiment is configured such that both the insertion portions 45b inserted into the upper rail 6 are moved upward by being operated so that the operation portion 45a is pulled upward. At this time, the both insertion portions 45b raise the rear end 30b of the lock lever 30 upward, so that the lock lever 30 moves clockwise in the direction in which the tip 30a moves downward (FIG. 3B). Direction). Thus, the lock mechanism 31 of the present embodiment is configured to release the engagement between the lock engagement portion 37 on the lock lever 30 side and the first engagement portion 41 on the lower rail 5 side.

  As described above, the lock mechanism 31 of the present embodiment engages and disengages the lock lever 30 supported by the upper rail 6 with respect to the first engagement portion 41 provided on the lower rail 5, thereby lowering the lower rail 5 and the lower rail. It is possible to change the relative position of the lock lever 30 that engages with the lock lever 30. In the present embodiment, the first position adjusting mechanism 51 is thus formed that can adjust the movement position of the upper rail 6, that is, the slide position of the seat 1.

  Here, as shown in FIGS. 3B and 4, in the present embodiment, each insertion hole 36 of the lock lever 30 through which the support shaft 32 provided in the upper rail 6 is inserted is formed in the lock lever 30. It has a long hole shape extending in the stretching direction. As a result, the upper rail 6 of the present embodiment is allowed to move relative to the lock lever 30 within a range in which the support shaft 32 can move in each insertion hole 36.

  As shown in FIGS. 4 and 8, in the present embodiment, the both side wall portions 15 of the upper rail 6 are engaged with engagement portions (first portions) that can be engaged with the lock lever 30 at a plurality of positions in the extending direction of the upper rail 6. 2 engaging portions 52) are formed. That is, when the lock lever 30 is engaged with the second engagement portions 52 provided on the both side wall portions 15 of the upper rail 6, the relative position of the upper rail 6 with respect to the lock lever 30 in the extending direction is fixed. And in this embodiment, the 2nd position adjustment mechanism 62 which can adjust the movement position of the upper rail 6 by this is formed.

  More specifically, in the present embodiment, the lock insertion holes 38 formed in the respective side wall portions 15 of the upper rail 6 as described above are the lock engagement portions 37 along the extending direction of the upper rail 6 in the lock insertion hole 38. The shape of the hole is such that the relative position of the upper rail 6 and the lock lever 30 can be changed. Further, a plurality of engaging claws 65 projecting downward are formed on the upper side portion (upper side portion in FIG. 8) of the lock insertion hole 38, like the respective engaging claws 40 on the lower rail 5 side. Has been. The through holes 42 penetrating the lock engaging portion 37 in the thickness direction as described above are formed in the respective engaging claws 40 and the upper rail 6 formed in the lower rail 5 based on the rotation of the lock lever 30. Furthermore, each of the engaging claws 65 has a long hole shape so that both of the engaging claws 65 can be inserted simultaneously.

  That is, as shown in FIGS. 7 to 9, each engaging claw 65 constituting the second engaging portion 52 on the upper rail 6 side is also between each adjacent engaging claw 65 of the lock lever 30. A plurality of groove portions (second groove portions 66) are formed that open in the direction in which the distal end 30a of the lock lever 30 moves (lower side in each figure) as it rotates. And these 2nd groove parts 66 are also each insertion part of the lock engagement part 37 in the groove | channel based on rotation of the lock lever 30, similarly to the 1st groove part 43 by the side of the said 1st engagement part 41. 44 is inserted.

  Here, as shown in FIGS. 7 and 8, in this embodiment, the insertion depth D2 of each insertion portion 44 with respect to the second groove portion 66 on the upper rail 6 side is equal to each insertion portion with respect to the first groove portion 43 on the lower rail 5 side. 44 is set to be shallower than the insertion depth D1.

  That is, as shown in FIGS. 10 to 12, the lock mechanism 31 of the present embodiment maintains the state in which the insertion portions 44 of the lock engagement portion 37 are inserted into the first groove portions 43 on the lower rail 5 side. However, it is possible to remove each insertion portion 44 from the second groove portion 66 on the upper rail 6 side. In this embodiment, the relative position between the upper rail 6 and the lock lever 30 is changed in a state where the relative position between the lower rail 5 and the lock lever 30 is fixed. The movement position of the upper rail 6 can be finely adjusted.

  More specifically, as shown in FIG. 13, the lock mechanism 31 of the present embodiment can switch the engagement state of the lock lever 30 with respect to the lower rail 5 and the upper rail 6 based on the operation amount of the operation handle 45. It has become.

  Specifically, in the lock mechanism 31 of the present embodiment, the lock lever 30 (the lock engagement portion 37) of the lock handle 31 on the lower rail 5 side is in a state where the operation handle 45 (the operation portion 45a) is not operated. It is in a state of engaging with both the first engaging portion 41 and the second engaging portion 52 on the upper rail 6 side (see FIGS. 7 to 9, a state indicated by a solid line in each drawing). Further, when the operation handle 45 is pulled up from the initial position P0 to the position exceeding the first position P1 at the time of non-operation, the lock mechanism 31 causes the lock lever 30 to move to the first engagement portion 41 on the lower rail 5 side. Engages and does not engage with the second engagement portion 52 on the upper rail 6 side (see FIGS. 10 to 12). When the operation handle 45 is further pulled up beyond the second position P2, the lock mechanism 31 has the lock lever 30 at the first engagement portion 41 on the lower rail 5 side and the second engagement portion on the upper rail 6 side. 52 is configured to be disengaged with respect to both of them (see FIGS. 7 to 9, a state indicated by a two-dot chain line in each figure).

  Further, as shown in FIGS. 13 to 15, the second position adjusting mechanism 62 of the present embodiment has an interval (formation pitch) between the second groove portions 66 formed in the second engaging portion 52 on the upper rail 6 side. Based on the above, it is possible to adjust the relative position of the upper rail 6B and the lock lever 30B one step at a time in the front-rear direction with the center as a reference. Specifically, as shown in FIGS. 7 and 8, in the present embodiment, the formation pitch X <b> 1 of the first groove portion 43 formed in the first engagement portion 41 on the lower rail 5 side is the formation of the second groove portion 66. It is an integral multiple (2 times) of the pitch X2. In this embodiment, the insertion portion 44 set in the lock engagement portion 37 can be smoothly moved to the second engagement without interfering with the engagement claws 40 constituting the first engagement portion 41. The second groove portion 66 formed in the joint portion 52 can be engaged / disengaged.

Next, the operation of the seat slide device 10 of the present embodiment configured as described above will be described.
In the seat slide device 10 of the present embodiment, when the operation handle 45 is lifted beyond the second position P2 (see FIG. 13), the lock lever 30 constituting the lock mechanism 31 is moved to the first engagement on the lower rail 5 side. It becomes non-engaged with respect to both the part 41 and the second engaging part 52 on the upper rail 6 side. The second position P2 is set in the vicinity of the third position P3 corresponding to the maximum pulling angle of the operation handle 45. In the present embodiment, this shifts to an unlocked state in which the relative movement of the upper rail 6 with respect to the lower rail 5 is allowed.

  That is, in this unlocked state, the slide position of the seat 1 can be freely changed. Further, the lock mechanism 31 of the present embodiment returns the operation handle 45 that has been lifted (see FIG. 13), so that the lock lever 30 is again moved to the first engagement portion 41 on the lower rail 5 side and the second engagement on the upper rail 6 side. It will be in the state engaged with both the engaging parts 52. FIG. In the present embodiment, this shifts to a locked state in which the relative movement of the upper rail 6 with respect to the lower rail 5 is restricted.

  In the present embodiment, in the process of pulling up the operation handle 45 as described above, or in the process of returning the lifted operation handle 45 to the initial position P0, the operation handle 45 is moved between the first position P1 and the second position P2. By keeping the gap in between, the lock lever 30 engages with the lower rail 5 and does not engage with the upper rail 6 (see FIGS. 10 to 12). That is, the lock mechanism 31 of this embodiment shifts to a half-lock state in which the relative position between the upper rail 6 and the lock lever 30 can be changed while the relative position between the lower rail 5 and the lock lever 30 is fixed. The seat slide device 10 according to the present embodiment can finely adjust the slide position of the seat 1 supported by the upper rail 6 by using this half-lock state.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The seat slide device 10 includes an upper rail 6 that supports the seat 1 upward, and a lower rail 5 that supports the upper rail 6 so as to be relatively movable along the extending direction. In addition, the seat slide device 10 includes a lock lever 30 that is supported by the upper rail 6 and engages with the lower rail 5 to restrict relative movement of the upper rail 6. The seat slide device 10 includes a first position adjustment mechanism 51 that can adjust the movement position of the upper rail 6 by changing the relative position of the lock lever 30 that engages with the lower rail 5, and a lock lever that is supported by the upper rail 6. And a second position adjustment mechanism 62 that can adjust the movement position of the upper rail 6 by changing the relative position of the upper rail 6.

  According to the said structure, the two position adjustment mechanisms (51, 62) which can adjust the movement position of the upper rail 6 with a simple structure can be formed. By using these two position adjustment mechanisms in combination, the degree of freedom in adjustment can be increased while ensuring high reliability.

  (2) The seat slide device 10 includes an operation handle 45 that is operated to adjust the slide position of the seat 1. Each of the lower rail 5 and the upper rail 6 can be engaged with the lock lever 30 at a plurality of positions in the extending direction of the upper rail 6, and the engagement portion (41) capable of fixing the relative position of the lock lever 30 by the engagement. , 52). Further, the first position adjusting mechanism 51 engages / disengages the lock lever 30 with the first engagement portion 41 provided on the lower rail 5 based on an operation input to the operation handle 45, thereby engaging the lower lever 5. 30 relative positions can be changed. The second position adjustment mechanism 62 is supported by the upper rail 6 by engaging and disengaging the lock lever 30 with respect to the second engagement portion 52 provided on the upper rail 6 based on an operation input to the operation handle 45. The relative position of the lock lever 30 can be changed.

  According to the above configuration, the first position adjustment mechanism 51 and the second position adjustment mechanism 62 that can be operated using the single operation handle 45 and can reliably adjust the movement position of the upper rail 6 are formed. As a result, the fine adjustment of the seat slide position can be easily performed.

  (3) The upper rail 6 is provided with a support shaft 32 that intersects the extending direction of the upper rail 6. The lock lever 30 is supported so as to be rotatable around a rotation axis L formed by the support shaft 32 based on an operation input to the operation handle 45. Further, the first engaging portion 41 formed on the lower rail 5 and the second engaging portion 52 formed on the upper rail 6 are respectively inserted portions provided on the lock lever 30 by the rotation of the lock lever 30. It has a plurality of grooves (43, 66) into which 44 is inserted. And the insertion depth D2 of the insertion part 44 with respect to each 2nd groove part 66 by the side of the 2nd engagement part 52 is larger than the insertion depth D1 of the insertion part 44 with respect to the 1st groove part 43 by the side of the 1st engagement part 41. Set shallow.

  According to the above configuration, the engagement state of the lock lever 30 with respect to the lower rail 5 and the upper rail 6 can be switched based on the operation amount of the operation handle 45. That is, by adjusting the operation amount of the operation handle 45, the operation of rotating the lock lever 30 to engage both the first engagement portion 41 and the second engagement portion 52, or these first engagement portions. The lock lever 30 is engaged with the first engagement portion 41 and is not engaged with the second engagement portion 52 in the middle of the operation of detaching from both 41 and the second engagement portion 52. Can do. And by limiting the movement range of the upper rail 6 by this, the fine adjustment of the seat slide position can be performed easily. Furthermore, by adopting a configuration in which the insertion portion 44 of the lock lever 30 is inserted into both the engagement grooves (43, 66), a high lock strength can be ensured. As a result, the reliability can be improved.

  (4) The formation pitch X1 of each first groove portion 43 formed in the first engagement portion 41 on the lower rail 5 side is the formation pitch X2 of the second groove portion 66 formed in the second engagement portion 52 on the upper rail 6 side. It is an integral multiple of (2 times).

  According to the above configuration, the insertion portion 44 of the lock lever 30 can be smoothly moved to the second engagement without interfering with the first groove portions 43 on the first engagement portion 41 side (each engagement claw 40 constituting the first engagement portion 41). It can insert in each 2nd groove part 66 by the side of the joint part 52, and can remove | extract from the said 2nd groove part 66 concerned.

  (5) The upper rail 6 has a pair of side wall portions 15 arranged to face each other. Further, the side wall portion 15 is formed with a lock insertion hole 38 through which the lock engaging portion 37 provided on the lock lever 30 having the insertion portion 44 is inserted. The second engaging portion 52 is formed in the lock insertion hole 38.

  According to the above configuration, it is possible to form the first position adjustment mechanism 51 and the second position adjustment mechanism 62 that operate based on an operation input to the one operation handle 45 with a simple configuration. Further, by changing the relative position of the lock lever 30 in the lock insertion hole 38, for example, the lock engagement portion 37 is detached from the second engagement portion 52 due to an external force such as a collision load. However, the inner wall of the lock insertion hole 38 positioned in the relative movement direction functions as a stopper capable of locking the lock engagement portion 37. And thereby, high reliability can be ensured. In addition, by providing fail-safe in this manner, the second engagement portion 52 can be increased in the degree of freedom of adjustment by increasing the position where the lock engagement portion 37 can be engaged. Then, the slide position of the sheet 1 can be adjusted more finely.

[Second Embodiment]
Hereinafter, 2nd Embodiment regarding a vehicle seat slide apparatus is described according to drawing. For convenience of explanation, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 16 to 18, the lock lever 30 </ b> B of the present embodiment has a support shaft 71 that penetrates the lock lever 30 </ b> B in the width direction. In addition, support holes 72 facing each other are formed in both side wall portions 15B of the upper rail 6B. That is, the lock lever 30B is supported between the side wall portions 15B of the upper rail 6B by inserting the support shaft 71 into the support holes 72. Thus, the lock lever 30B can be rotated around the rotation axis L formed by the support shaft 71.

  In the present embodiment, through holes 73 are formed in both side plate portions 34B of the lock lever 30B so as to face each other. The support shaft 71 is fixed so as not to rotate relative to the side plate portions 34B by being inserted into the through holes 73.

  Further, as shown in FIG. 19, each support hole 72 formed in the both side wall portions 15B of the upper rail 6B has a long hole shape extending in the extending direction of the upper rail 6B (the left-right direction in the figure). . That is, the upper rail 6B of the present embodiment is positioned relative to the lock lever 30B within a range in which the support shaft 71 can move within each insertion hole 36 based on the long hole shape of each insertion hole 36. It is possible to change. In the present embodiment, in each of the support holes 72, engaging portions that can engage the support shafts 71 of the lock levers 30B inserted through the support holes 72 at a plurality of positions in the extending direction of the upper rail 6B. A second engagement portion 52B) is provided.

  More specifically, in the present embodiment, each support hole 72 has an inner diameter in the vertical direction that is set to a size that allows the support shaft 71 to move up and down within each support hole 72. That is, each support hole 72 has a hole shape that allows the support shaft 71 to move in the radial direction, including not only the extending direction of the upper rail 6B (the horizontal direction in the figure) but also its vertical direction. A plurality of engaging teeth 74 are formed along the longitudinal direction of the lower side of each support hole 72. The support shaft 71 is formed with engagement teeth 75 that can be engaged with and disengaged from the engagement teeth 74 on the support hole 72 side based on the vertical movement of the support shaft.

  In other words, in the present embodiment, the second engaging portion 52 </ b> B is configured by the engaging teeth 74 formed on the lower side portion of the support hole 72. The lock insertion hole 38B of the present embodiment is not provided with the engaging claw 65 like the lock insertion hole 38 of the first embodiment (see FIGS. 4 and 16). The lock lever 30B is configured such that the relative position of the lock lever 30B relative to the upper rail 6B is fixed by engaging the engagement teeth 74 of the support shaft 71 with the second engagement portion 52B.

  More specifically, as shown in FIGS. 16 to 18, the lock mechanism 31 </ b> B of the present embodiment urges the lock lever 30 </ b> B to push the support shaft 71 against the second engagement portion 52 </ b> B on the upper rail 6 side. A spring member 77 is provided as a support urging member capable of holding the state in which the support shaft 71 is engaged with the second engagement portion 52B.

  Specifically, the spring member 77 is formed in a substantially V-shape by further bending a folded wire. Further, the spring member 77 has a bent end portion 77a and an open end 77b located at both ends in the length direction of the spring member 77 projecting out of the lock lever 30 through the opening 47 provided above the support shaft 71. These are disposed between both side plate portions 34B of the lock lever 30B (upper side in FIG. 17). Further, the spring member 77 has an abutting portion 77c that abuts against the support shaft 71 of the lock lever 30B from the upper side at an intermediate portion that is convex in a V shape. The spring member 77 of the present embodiment has a bent end portion 77a and an open end 77b that protrude to the outside of the lock lever 30 abut against the upper wall portion 16 of the upper rail 6B from below. The support shaft 71 that contacts the contact portion 77c can be biased downward, that is, in the direction in which the support shaft 71 is pressed against the second engagement portion 52B.

  In the present embodiment, the bent end 77a and the open end 77b of the spring member 77 have an annular shape that expands in the width direction. And the contact part 77c has the curved shape which becomes convex toward the bending direction inner side (in FIG. 17, upper side) of the spring member 77 which makes the substantially V shape.

  Further, the seat slide device 10B of the present embodiment, like the spring member 46 in the first embodiment, biases and rotates the lock lever 30B, thereby locking the lock lever 30B (the lock engaging portion 37 thereof). ) Is engaged with the first engaging portion 41 on the lower rail 5 side, and a spring member 78 as a locking urging member is provided.

  Specifically, the spring member 78 is also formed by further bending a half-folded wire rod, similarly to the spring member 46 in the first embodiment. The spring member 78 has a winding portion 78c wound in a coil shape between the bent end portion 78a and both open end portions 78b. Further, the upper rail 6B of the present embodiment is provided with a support shaft 79 disposed behind the front end 30a of the lock lever 30B (on the right side in FIG. 17) so as to be spanned between the side wall portions 15B. It has been. The spring member 78 is supported by the support shaft 79, so that the spring member 78 is disposed behind the lock lever 30B in the extending direction of the upper rail 6B.

  That is, the spring member 78 is supported by the upper rail 6B in a state where the support shaft 79 is inserted into the winding portion 78c. Further, the spring member 78 has an open end 78b abutting against the upper wall 16 of the upper rail from below, and a bent end 78a of the spring member 78 on the tip 30a (the lock engaging portion 37) of the lock lever 30. It is comprised so that it may contact | abut from the lower side. In this embodiment, the spring member 78 as the lock biasing member thereby biases the lock lever 30 without interfering with the spring member 77 as the support biasing member. The lock engaging portion 37 provided at the tip 30 a can be pressed against the first engaging portion 41 of the lower rail 5.

  The urging force of the spring member 77 constituting the supporting urging member is set to be weaker than the urging force of the spring member 78 constituting the locking urging member. In this embodiment, the engagement state of the lock lever 30 with respect to the lower rail 5 and the upper rail 6 can be switched based on the operation amount of the operation handle 45 operated to adjust the slide position of the seat 1. It is possible.

  That is, as shown in FIGS. 17 (a), 17 (b), 20 and 21, the lock lever 30B is lifted by raising the operation handle 45 (the operation portion 45a thereof) (as in the first embodiment). As shown in FIG. 13, the rear end 30b is lifted up and rotated clockwise in FIG. When the tip 30a moves downward against the urging force of the spring member 78, the lock engagement portion 37 provided on the tip 30a and the first engagement portion 41 on the lower rail 5 side are engaged. Is released.

  At this time, in the lock lever 30B, the lock engagement portion 37 is detached from the first engagement portion 41 on the lower rail 5 side based on the difference in urging force set between the two spring members 77 and 78. Before, the support shaft 71 constituting the rotation shaft L is detached from the second engagement portion 52B on the upper rail 6 side. That is, the lock lever 30 </ b> B moves so that the support shaft 71 is lifted upward against the urging force of the spring member 77. In this embodiment, the lock engagement portion 37 of the lock lever 30B engages with the first engagement portion 41 on the lower rail 5, that is, the relative position between the lower rail 5 and the lock lever 30B is fixed. In this state, a second position adjustment mechanism 62B is formed that can change the relative position between the upper rail 6B and the lock lever 30.

  Note that, similarly to the lock mechanism 31 in the first embodiment, when the operation handle 45 is lifted beyond the second position P2, the lock mechanism 31B of the present embodiment also has the lock lever 30B in the first engagement. It is comprised so that it may be in the unlocked state which removed | separated from both the joint part 41 and the 2nd engaging part 52B (refer FIG. 13). When the operation handle 45 is in the first position P1 to the second position P2, the lock lever 30B engages with the first engagement portion 41 and engages with the second engagement portion 52B. It is configured to be in a half-locked state.

  Further, as shown in FIGS. 22A and 22B and FIGS. 23A and 23B, the second engagement portion 52B of the present embodiment has an extension direction of the upper rail 6B (the left-right direction in each figure). In each of the above, the relative position between the upper rail 6B and the lock lever 30B can be changed in two stages (moving amounts δ1, δ2) before and after the center portion as a reference. The two-step movement amounts δ1 and δ2 are due to the formation pitch of the engagement teeth 74 formed at equal intervals. In this embodiment, the slide position of the sheet 1 can be adjusted easily and finely.

  As described above, also in the seat slide device 10B of the present embodiment, the same effects as those of the first embodiment can be obtained. That is, it is possible to form two position adjustment mechanisms (51, 62B) that can adjust the movement position of the upper rail 6B with a simple configuration. And by using these two position adjustment mechanisms in combination, a higher degree of freedom of adjustment can be secured.

  Further, the engagement state of the lock lever 30B with respect to the lower rail 5 and the upper rail 6B can be switched based on the operation amount of the operation handle 45. That is, by adjusting the operation amount, it is possible to create a state in which the lock lever 30B engages with the first engagement portion 41 and does not engage with the second engagement portion 52B. As a result, the seat slide position can be finely adjusted more easily.

  Further, by changing the relative position of the lock lever 30B in the support hole 72, for example, when the support shaft 71 of the lock lever 30B is detached from the second engagement portion 52B due to an external force such as a collision load. Even if it exists, the inner wall of the support hole 72 located in the relative movement direction functions as a stopper capable of locking the support shaft 71. And thereby, high reliability can be ensured. Further, by providing fail-safe in this way, it is possible to increase the degree of freedom of adjustment for the second engagement portion 52B by increasing the positions where the support shaft 71 can be engaged. And thereby, the slide position of the sheet | seat 1 can be adjusted more finely.

In addition, you may change each said embodiment as follows.
In each of the above embodiments, the lock lever (30, 30B) rotates around the rotation axis L (support shafts 32, 71) substantially orthogonal to the both side walls (15, 15B) of the upper rail (6, 6B). Supported as possible. Then, the lock engagement portion 37 provided at the tip 30a is rotated in the upward movement direction to engage with the first engagement portion 41 on the lower rail 5 side. However, the present invention is not limited to this, and the rotation axis L does not necessarily have to be “perpendicular to both side walls”. What crosses the extending direction of the upper rail may be used. Then, the lock engagement portion 37 is engaged with the first engagement portion 41 on the lower rail 5 side when the lock engagement portion 37 moves downward, and the engagement is released when the lock engagement portion 37 moves upward. May be.

  In the first embodiment, the second engagement portion 52 is formed in the lock insertion hole 38 through which the lock engagement portion 37 is inserted, and in the second embodiment, the support hole through which the support shaft 71 is inserted. The second engaging portion 52 </ b> B is formed at 72. However, the present invention is not limited to this, and the second engaging portion (52, 52B) on the upper rail (6, 6B) side may be formed in a place other than the lock insertion hole 38 and the support hole 72.

  In each of the above embodiments, the second position adjusting mechanism 62 moves the lock lever to the upper rail (6, 6B) when the lock lever (30, 30B) is engaged with the first engagement portion 41. It is possible to engage / disengage with respect to the second engaging portion (52, 52B) provided in the. However, the present invention is not limited to this, and a configuration in which an engaging portion that can be engaged with the upper rail at a plurality of positions in the extending direction of the upper rail may be formed on the lock lever side.

  For example, like the lock mechanism 31 in the first embodiment, the support shaft 32 is provided on the upper rail 6 side, and the insertion hole through which the support shaft 32 is inserted is provided on the lock lever 30 side. Similarly to the support hole 72 in the second embodiment, the insertion hole has a shape that allows the radial movement of the support shaft 32 in the insertion hole. And it is good also as a structure which forms the engaging part which can be engaged with the support shaft 32 in the insertion hole by the side of this lock lever 30 in the several position in the extending direction of the upper rail 6. FIG. Even with such a configuration, the second position adjusting mechanism 62 using the engaging portion can be formed with a simple configuration.

  In each of the above embodiments, based on the operation input to one operation handle 45, the lock lever (30, 30B) is the first engagement portion 41 on the lower rail 5 side and the second on the upper rail (6, 6B) side. It was decided to engage / disengage with respect to the engaging portions (52, 52B). However, the present invention is not limited to this, and the first position adjustment mechanism 51 and the second position adjustment mechanism 62 may be operated using independent operation members. Further, the engagement / disengagement of the lock lever with respect to the engaging portion on the lower rail side and the engaging portion on the upper rail side may not necessarily be due to the rotation of the lock lever. In the state where the lock lever (30, 30B) is engaged with the second engagement portion (52, 52B) on the upper rail (6, 6B) side, the lock lever is moved to the first engagement portion on the lower rail 5 side. This also does not exclude the configuration having the first position adjustment mechanism 51 that engages and disengages with respect to 41.

  -You may change arbitrarily about the structure of each engaging part (52, 52B) by the side of an upper rail (6, 6B). For example, in the first embodiment, the second engagement portion 52 is configured by a plurality of engagement claws 65 provided on the upper side portion of the lock insertion hole 38. The lock lever 30 is engaged with the second engagement portion 52 by inserting the insertion portion 44 into a groove portion (second groove portion 66) formed between the engagement claws 65. It was decided to. However, the present invention is not limited thereto, and the engagement teeth similar to the engagement teeth 74 provided in the support hole 72 in the second embodiment are formed in the lock insertion hole 38, and this is defined as the second engagement portion. It may be configured such as.

  Further, in the configuration in which the second engagement portion 52B is formed in the support hole 72 through which the support shaft 71 is inserted as in the second embodiment, the lock in the first embodiment is inserted into the support hole 72. An engaging claw similar to the engaging claw 65 provided in the insertion hole 38 is formed. And it is good also as a structure by which the support shaft 71 is inserted in the groove part formed between the engaging claws by making this into a 2nd engaging part.

The configuration of the first engagement portion 41 on the lower rail 5 side may also be arbitrarily changed.
The shapes of the lock lever (30, 30B) and the operation handle 45 may be arbitrarily changed.

  In the first embodiment, the second position adjusting mechanism 62 is based on the center portion based on the formation pitch X2 of the second groove portions 66 formed in the second engagement portion 52 on the upper rail 6 side. One step at a time in the front-rear direction is configured so that the relative position between the upper rail 6B and the lock lever 30B can be adjusted. In the second embodiment, the second position adjustment mechanism 62B is configured to be capable of adjusting the relative position between the upper rail 6B and the lock lever 30B in two stages in the front-rear direction with respect to the central portion. . However, the present invention is not limited to this, and the adjustment amount and the number of adjustment steps by the second position adjustment mechanism may be arbitrarily changed.

  In the first embodiment, the formation pitch X1 of each first groove portion 43 is an integral multiple (2 times) the formation pitch X2 of the second groove portion 66 formed in the second engagement portion 52 on the upper rail 6 side. ). However, the magnification between the formation pitches may be arbitrarily changed. For example, it may be three times or more. Moreover, it does not necessarily have to be an integral multiple. And this is not excluded even if it is not an equal interval.

  In the second embodiment, the lock engaging portion 37 is made by making the biasing force of the spring member 77 constituting the supporting biasing member weaker than the biasing force of the spring member 78 constituting the locking biasing member. Is detached from the first engagement portion 41 on the lower rail 5 side, the support shaft 71 constituting the rotation shaft L is detached from the second engagement portion 52B on the upper rail 6 side. However, the present invention is not limited to this, and the support shaft 71 may be detached from the second engagement portion 52B before the lock engagement portion 37 is detached from the first engagement portion 41 by other configurations. .

  In each of the above embodiments, the lower rail 5 is extended in the vehicle front-rear direction. However, with regard to the arrangement of the seat slide device (10, 10B), for example, the lower rail 5 is extended in the vehicle width direction. It may be arbitrarily changed such as being installed.

  DESCRIPTION OF SYMBOLS 1 ... Seat, 5 ... Lower rail, 6, 6B ... Upper rail, 10, 10B ... Seat slide device, 15, 15B ... Side wall part, 30, 30B ... Lock lever, 31, 31B ... Lock mechanism, 32 ... Support shaft, 34, 34B ... side plate portion, 37 ... lock engaging portion, 38 ... lock insertion hole, 40 ... engaging claw, 41 ... first engaging portion, 42 ... through hole, 43 ... first groove portion, 44 ... insertion portion, 45 ... Operation handle 46... Spring member (locking urging member) 51. First position adjustment mechanism 52 and 52 B Second engagement portion 62 and 62 B second position adjustment mechanism 65 Engagement claw 66 ... 2nd groove part, 71 ... Support shaft, 72 ... Support hole, 74 ... Engagement tooth, 75 ... Engagement tooth, 77 ... Spring member (supporting biasing member), 78 ... Spring member (locking biasing member) , L: rotating shaft, X1, X2 ... forming pitch, D1, D2 ... insertion depth, 0 ... initial position, P1 ... first position, P2 ... second position, P3 ... third position, .delta.1, .delta.2 ... movement amount.

Claims (8)

An upper rail that supports the seat upward,
A lower rail that supports the upper rail so as to be relatively movable along the extending direction;
A lock lever that is supported by the upper rail and is capable of restricting relative movement of the upper rail by engaging with the lower rail;
A first position adjusting mechanism capable of adjusting a moving position of the upper rail by changing a relative position between the lower rail and the lock lever engaged with the lower rail;
A second position adjustment mechanism capable of adjusting a movement position of the upper rail by changing a relative position between the upper rail and the lock lever supported by the upper rail;
A vehicle seat slide device comprising: The vehicle seat slide device according to claim 1,
An operation handle operated to adjust the slide position of the seat;
Each of the lower rail and the upper rail is provided with an engaging portion that can be engaged with the lock lever at a plurality of positions in the extending direction and that can fix the relative position of the lock lever in the extending direction by the engagement. And
The first position adjustment mechanism is configured to engage and disengage the lock lever with a first engagement portion provided on the lower rail based on an operation input to the operation handle, so that a relative position of the lock lever engaged with the lower rail is increased. Is configured to be changeable,
The second position adjusting mechanism is configured to engage and disengage the lock lever with respect to a second engagement portion provided on the upper rail based on an operation input to the operation handle, so that the lock lever supported by the upper rail is That the relative position can be changed,
A vehicle seat slide device. The vehicle seat slide device according to claim 2,
The lock lever is supported by the upper rail so as to be rotatable around a rotation axis that intersects the extending direction based on an operation input to the operation handle,
Each of the first engagement portion and the second engagement portion has a plurality of groove portions into which insertion portions provided on the lock lever are inserted when the lock lever rotates.
The insertion depth of the insertion portion with respect to the second groove portion on the second engagement portion side is set shallower than the insertion depth of the insertion portion with respect to the first groove portion on the first engagement portion side;
A vehicle seat slide device. In the vehicle seat slide device according to claim 3,
The formation pitch of each first groove is an integer multiple of the formation pitch of each second groove,
A vehicle seat slide device. In the vehicle seat slide device according to any one of claims 2 to 4,
The upper rail has a pair of side wall portions arranged to face each other,
The lock lever is supported between the side wall portions, and is inserted into a lock insertion hole formed in the side wall portion so that the lock lever is provided on the lower rail based on an operation input to the operation handle. Having a lock engaging part detachable from the part,
2. The vehicle seat slide device according to claim 1, wherein the side wall portion is formed with the second engagement portion to which the lock engagement portion can be engaged and disengaged based on the operation input. The vehicle seat slide device according to claim 2,
The upper rail has a pair of side wall portions arranged to face each other,
The lock lever has a support shaft that is inserted into a support hole provided in the both side walls, and is supported between the both side walls,
The support hole has a hole shape that allows radial movement of the support shaft,
The vehicle seat slide device according to claim 1, wherein the support hole is formed with the second engagement portion to which the support shaft can be engaged and disengaged based on an operation input to the operation handle. The vehicle seat slide device according to claim 6,
The lock lever includes a lock engagement portion that can be engaged with and disengaged from the first engagement portion provided on the lower rail by rotating around the support shaft based on the operation input.
A locking biasing member capable of holding the lock engaging portion engaged with the first engaging portion by biasing the lock lever and rotating the lock lever;
A support urging member capable of holding a state in which the support shaft engages with the second engagement portion by urging the lock lever and pressing the support shaft against the second engagement portion; Prepared,
The second position adjusting mechanism is configured so that the lock engagement portion is released from the first engagement portion against the urging force of the support urging member by the rotation of the lock lever based on the operation input. In addition, the vehicle seat slide device is configured such that the support shaft is detached from the second engagement portion against the biasing force of the support biasing member. The vehicle seat slide device according to claim 7,
The vehicular seat slide device, wherein an urging force of the supporting urging member is set to be weaker than an urging force of the locking urging member.