JP6417929B2 - Vehicle seat slide device - Google Patents

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 is configured to regulate the relative movement of the upper rail by rotating the lock lever to engage with the engaging portion on the lower rail side.

  As described above, conventionally, many of the lock mechanisms of the seat slide apparatus allow the relative movement of the upper rail by engaging and disengaging the lock member supported by the upper rail with respect to the engaging portion on the lower rail side, and The moving position (sliding position) is fixed. By utilizing this, the slide position of the sheet can be adjusted.

  In addition, for example, the seat slide device described in Patent Document 2 includes two independent lock members, and these lock members are pressed against different engaging portions by being biased by rotation. Yes. Further, a phase difference is set in the two rows of engaging portions provided on the lower rail. Then, by making one of the lock members in an engaged state according to the movement position of the upper rail, a finer slide can be achieved while ensuring the necessary strength for the engaging portions on the lower rail side and the lock member side. Position adjustment can be performed.

JP 2010-100077 A JP 2006-175966 A

  However, in order to ensure a higher locking strength, it is desirable to engage the locking member supported by the upper rail and the engaging portion on the lower rail side on both sides in the rail width direction. And in the above prior art, there is a problem that the lock mechanism becomes larger by increasing the number of lock members to cope with this, so there is still room for improvement in this respect. 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 with a high degree of freedom of adjustment while ensuring high reliability with a simple configuration. There is to do.

A vehicle seat slide device that solves the above problems includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable, and a plurality of engaging claws that are arranged at equal intervals along the extending direction. The first and second engaging portions provided on the lower rail and the first and second engaging portions arranged along the extending direction by being supported by the upper rail and rotating. First and second lock levers having insertion portions that are inserted between the respective engagement claws by being urged and pressed against the first and second engagement portions. The insertion portion of the first lock lever is engaged with the engagement claw from one side along the extension direction of the lower rail, and the insertion portion of the second lock lever is extended in the extension direction of the lower rail. The other along Engaging with the engaging claws, and at least one of the first and second lock levers is interposed between the engaging claws regardless of the position of the upper rail relative to the lower rail. The vehicle seat slide device is configured to be inserted, wherein a sum of an insertion width of the insertion portion and a claw width of the engagement claw switches an engagement direction of the insertion portion with respect to the engagement claw. It is equal to the minimum moving distance of the upper rail .

  According to the above configuration, each engagement claw is defined by setting, as the adjustment pitch, the minimum movement distance at which the engagement direction with respect to each engagement claw is switched between the insertion portion of the first lock lever and the insertion portion of the second lock lever. The moving position of the upper rail can be adjusted at an interval narrower than the formation pitch. In addition, high lock rigidity can be ensured by engaging each lock lever supported by the upper rail and each engaging portion on the lower rail side on both sides in the width direction of the upper rail. Further, at any moving position, it is possible to ensure a state in which at least one of the lock levers meshes with the engaging portions on the lower rail side. As a result, the degree of freedom of adjustment can be increased while ensuring high reliability with a simple configuration.

  According to the above configuration, the insertion portion of the second lock lever extends along the extending direction of the lower rail while the insertion portion of the first lock lever engages with the engaging claw from one side along the extending direction of the lower rail. The other side can be engaged with the engaging claw.

A vehicle seat slide device that solves the above problems includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable, and a plurality of engaging claws that are arranged at equal intervals along the extending direction. The first and second engaging portions provided on the lower rail and the first and second engaging portions arranged along the extending direction by being supported by the upper rail and rotating. First and second lock levers having insertion portions that are inserted between the respective engagement claws by being urged and pressed against the first and second engagement portions. The insertion portion of the first lock lever is engaged with the engagement claw from one side along the extension direction of the lower rail, and the insertion portion of the second lock lever is extended in the extension direction of the lower rail. The other along Engaging with the engaging claws, and at least one of the first and second lock levers is interposed between the engaging claws regardless of the position of the upper rail relative to the lower rail. In the vehicle seat slide device configured to be inserted, the first and second lock levers are configured such that the insertion portions of the first and second lock levers are arranged at equal positions in the extending direction of the lower rail. It was .
According to the above configuration, each engagement claw is defined by setting, as the adjustment pitch, the minimum movement distance at which the engagement direction with respect to each engagement claw is switched between the insertion portion of the first lock lever and the insertion portion of the second lock lever. The moving position of the upper rail can be adjusted at an interval narrower than the formation pitch. In addition, high lock rigidity can be ensured by engaging each lock lever supported by the upper rail and each engaging portion on the lower rail side on both sides in the width direction of the upper rail. Further, at any moving position, it is possible to ensure a state in which at least one of the lock levers meshes with the engaging portions on the lower rail side. As a result, the degree of freedom of adjustment can be increased while ensuring high reliability with a simple configuration.

  According to the said structure, each lock lever and each engaging part by the side of a lower rail can be engaged with good balance in the rail width direction both sides. And thereby, higher reliability can be ensured.

A vehicle seat slide device that solves the above problems includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable, and a plurality of engaging claws that are arranged at equal intervals along the extending direction. The first and second engaging portions provided on the lower rail and the first and second engaging portions arranged along the extending direction by being supported by the upper rail and rotating. First and second lock levers having insertion portions that are inserted between the respective engagement claws by being urged and pressed against the first and second engagement portions. The insertion portion of the first lock lever is engaged with the engagement claw from one side along the extension direction of the lower rail, and the insertion portion of the second lock lever is extended in the extension direction of the lower rail. The other along Engaging with the engaging claws, and at least one of the first and second lock levers is interposed between the engaging claws regardless of the position of the upper rail relative to the lower rail. The vehicle seat slide device is configured to be inserted, and the upper rail is provided with a partition wall partitioning the first lock lever and the second lock lever.
According to the above configuration, each engagement claw is defined by setting, as the adjustment pitch, the minimum movement distance at which the engagement direction with respect to each engagement claw is switched between the insertion portion of the first lock lever and the insertion portion of the second lock lever. The moving position of the upper rail can be adjusted at an interval narrower than the formation pitch. In addition, high lock rigidity can be ensured by engaging each lock lever supported by the upper rail and each engaging portion on the lower rail side on both sides in the width direction of the upper rail. Further, at any moving position, it is possible to ensure a state in which at least one of the lock levers meshes with the engaging portions on the lower rail side. As a result, the degree of freedom of adjustment can be increased while ensuring high reliability with a simple configuration.

  According to the said structure, the interference between the 1st and 2nd lock lever provided independently can be prevented. And thereby, higher reliability can be ensured by ensuring the smooth operation of each of these lock levers.

A vehicle seat slide device that solves the above problems includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable, and a plurality of engaging claws that are arranged at equal intervals along the extending direction. The first and second engaging portions provided on the lower rail and the first and second engaging portions arranged along the extending direction by being supported by the upper rail and rotating. First and second lock levers having insertion portions that are inserted between the respective engagement claws by being urged and pressed against the first and second engagement portions. The insertion portion of the first lock lever is engaged with the engagement claw from one side along the extension direction of the lower rail, and the insertion portion of the second lock lever is extended in the extension direction of the lower rail. The other along Engaging with the engaging claws, and at least one of the first and second lock levers is interposed between the engaging claws regardless of the position of the upper rail relative to the lower rail. A vehicle seat slide device configured to be inserted, wherein the first and second lock levers extend in a direction opposite to a distal end side on which the insertion portion is provided with a rotation shaft interposed therebetween. A first base end portion and a second base end portion, and the first base end portion is inserted with a gap in a vertical direction with respect to a connection portion of the operation handle formed in a cylindrical shape, and The two base end portions are configured to be lifted by a pressing protrusion provided on the operation handle at a position farther from the rotation shaft than the first base end portion when the operation handle is pulled up. It was .
According to the above configuration, each engagement claw is defined by setting, as the adjustment pitch, the minimum movement distance at which the engagement direction with respect to each engagement claw is switched between the insertion portion of the first lock lever and the insertion portion of the second lock lever. The moving position of the upper rail can be adjusted at an interval narrower than the formation pitch. In addition, high lock rigidity can be ensured by engaging each lock lever supported by the upper rail and each engaging portion on the lower rail side on both sides in the width direction of the upper rail. Further, at any moving position, it is possible to ensure a state in which at least one of the lock levers meshes with the engaging portions on the lower rail side. As a result, the degree of freedom of adjustment can be increased while ensuring high reliability with a simple configuration.

According to the above configuration, the first base end portion inserted into the cylinder of the connecting portion is movable in the vertical direction, so that one of the lock levers is engaged with the engaging portion on the lower rail side, and the other is Is not allowed to engage with the engaging portion on the lower rail side. Further, when the operation handle is pulled up, the connection portion lifts the first base end portion inserted into the cylinder of the connection portion, whereby both of the lock levers can be unlocked. And at the time of this raising operation, the 1st and 2nd lock lever can be rapidly unlocked by the press protrusion provided in the connection part raising the 2nd base end part.
In the vehicle seat slide device that solves the above-described problem, it is preferable that a guide portion that guides the operation of the first and second lock levers is formed on the upper rail.
According to the said structure, each lock lever can be operated more smoothly.

  According to the present invention, it is possible to secure a higher 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 side view of a seat slide device. The exploded perspective view of a seat slide device. Sectional drawing of a sheet slide apparatus (VV cross section in FIG.3 (b)). Sectional drawing of a seat slide apparatus (VI-VI cross section in Fig.3 (a)). (A) is a top view of a locking mechanism, (b) is a side view of a locking mechanism. Sectional drawing of a locking mechanism (VIII-VIII cross section in FIG.5 and FIG.6). (A) and (b) are sectional views of a seat slide device (lock mechanism) (IXa-IXa section and IXb-IXb section in FIG. 6). (A) (b) is operation | movement explanatory drawing of a locking mechanism. Explanatory drawing which shows the relationship between the insertion width of an insertion part, the claw width of an engaging claw, and the formation pitch of an engaging claw, and an adjustment pitch. (A) (b) is operation | movement explanatory drawing of a locking mechanism. (A) (b) is operation | movement explanatory drawing of a locking mechanism. The fragmentary sectional view which shows the connection structure of each lock lever and an operation handle. The top view which shows the connection structure of each lock lever and an operation handle. Sectional drawing which shows the connection structure of each lock lever and an operation handle (XVI-XVI cross section in FIG. 15). Sectional drawing which shows the connection structure of each lock lever and an operation handle (XVII-XVII cross section in FIG. 15). Sectional drawing which shows the connection structure of each lock lever and an operation handle (XVIII-XVIII cross section in FIG. 17). The top view of the seat slide apparatus in 2nd Embodiment. Sectional drawing of the seat slide apparatus in 2nd Embodiment (XX-XX cross section in FIG. 19). Sectional drawing of the seat slide apparatus in 2nd Embodiment (XXI-XXI cross section in FIG. 19). (A) is a perspective view which shows the guide member fixed to an upper rail, (b) is a perspective view which shows the guide hole formed in each lock lever. The disassembled perspective view of the seat slide apparatus in 3rd Embodiment. Sectional drawing of the seat slide apparatus in 3rd Embodiment (sectional drawing orthogonal to the extending | stretching direction of the upper rail which shows a partition part and a guide part). Sectional drawing of the seat slide apparatus in 3rd Embodiment (sectional drawing along the extending direction of the upper rail which shows a guide part). The fragmentary sectional view which shows the connection structure of each lock lever and operation handle in 3rd Embodiment. The top view which shows the connection structure of each lock lever and operation handle in 3rd Embodiment. Sectional drawing which shows the connection structure of each lock lever and operation handle in 3rd Embodiment (XXVIII-XXVIII cross section in FIG. 27). Sectional drawing which shows the connection structure of each lock lever and operation handle in 3rd Embodiment (XXIX-XXIX cross section in FIG. 27). Sectional drawing which shows the connection structure of each lock lever and operation handle in 3rd Embodiment (XXX-XXX cross section in FIG. 29).

[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 (left-right direction in FIG. 1). Further, each of the lower rails 5 is provided with an upper rail 6 that relatively moves on the respective lower rails 5 along the extending direction thereof. The seat 1 is supported above 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. By using the function of the seat slide device 10, the position of the seat 1 in the vehicle front-rear direction can be adjusted.

  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 provided upright at both ends in the width direction of the bottom wall portion 11 (left and right direction in FIG. 5). Furthermore, a flange-shaped upper wall portion 13 is formed at the upper end (the upper end portion in FIG. 5) of each outer wall portion 12 so as to extend 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.

  Further, as shown in FIGS. 5 and 6, the upper rail 6 of the present embodiment includes a folded portion 23 that is folded from the lower end of each side wall portion 15 toward the outside 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. Specifically, these rolling elements 24 are held at both ends in the longitudinal direction of a holding member 25 formed in a long bar shape. 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.

  Further, as shown in FIGS. 4 to 6 and FIGS. 7A and 7B, the seat slide device 10 of the present embodiment is supported by the upper rail 6 and can be engaged with the lower rail 5. 30. 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. 4, 5, and 7, the upper rail 6 of the present embodiment is provided with a support shaft 32 that intersects with 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. That is, 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. The seat slide device 10 of the present embodiment includes a pair of left and right lock levers 30 (30a, 30b) that are rotatably supported by the support shaft 32 inside the upper rail 6.

  In the present embodiment, each of the lock levers 30 includes a pair of side plate portions 34 (34a, 34b) 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, respectively. ,have. Each side plate portion 34 is formed with an insertion hole 36 that faces each other. In the present embodiment, these insertion holes 36 have a long hole shape extending in the longitudinal direction of each lock lever 30. Each lock lever 30 has a rotation shaft formed by the support shaft 32 when the support shaft 32 spanned between the side wall portions 15 of the upper rail 6 is inserted into the insertion holes 36. It is possible to rotate around Q.

  As shown in FIGS. 4 to 6, the seat slide device 10 of the present embodiment includes a partition member 37 that partitions the inside of the upper rail 6 in the width direction. Specifically, the partition member 37 of the present embodiment is formed by bending a plate material into a substantially T shape. That is, the partition member 37 includes a partition wall portion 37a extending in the vertical direction and flanges 37b extending from the upper end of the partition wall portion 37a to both sides in the width direction. The flange 37b is formed on the upper wall portion 16 of the upper rail 6. By being fixed, the partition wall portion 37a is arranged at a position that bisects the inside of the upper rail 6 in the width direction. And each lock lever 30 of this embodiment is arrange | positioned inside the upper rail 6 in the position which pinches | interposes this partition part 37a in the width direction.

  As shown in FIGS. 4, 6, and 7, the lock lever 30 of the present embodiment has a substantially flat engagement portion 38 at the tip (the right end in FIG. 7). Specifically, among the two lock levers 30 juxtaposed between the side wall portions 15a and 15b along the extending direction of the upper rail 6, the first is arranged on the side wall portion 15a side on the left side in FIG. One lock lever 30a is provided with an engaging portion 38a extending toward the side wall portion 15a. Further, in FIG. 6, the second lock lever 30b disposed on the side wall portion 15b located on the right side is provided with an engaging portion 38b extending toward the side wall portion 15b. Furthermore, insertion holes 39 through which the engaging portions 38a and 38b are inserted are formed in the side wall portions 15a and 15b of the upper rail 6 positioned in the extending direction of the engaging portions 38a and 38b, respectively. . Then, the lock mechanism 31 of the present embodiment is configured such that the engaging portions 38a and 38b provided at the tip portion thereof move up and down, and the first and second lock levers 30a and 30b are independent of each other. It is the structure which rotates to.

  As shown in FIGS. 4 to 7, each of the inner wall portions 14 (14 a, 14 b) of the lower rail 5 is formed with a plurality of engaging claws 40 that protrude downward. Specifically, these engaging claws 40 are provided at substantially equal intervals along the extending direction of the lower rail 5. In the present embodiment, the engaging claws 40 form engaging portions 41 (41a, 41b) on the lower rail 5 side that are arranged in two rows along the extending direction.

  On the other hand, the engagement portion 38 of each lock lever 30 is provided with a plurality of through holes 42. And the lock lever 30 of this embodiment is a structure which engages with the engaging part 41 by the side of the lower rail 5 in the aspect by which each engagement nail | claw 40 is inserted in each of these through-holes 42. As shown in FIG.

  In other words, the lock lever 30 of the present embodiment rotates in the direction in which the tip side moves upward (counterclockwise direction in FIG. 7B), and thereby each engagement portion is formed along with the formation of each through hole 42. The bar-like portion left on 38 is inserted between the engaging claws 40 on the lower rail 5 side. The lock mechanism 31 of the present embodiment is configured such that the insertion portions 44 are engaged with the engagement claws 40 from the extending direction of the lower rail 5 so that the upper rail 6 on which the lock lever 30 is supported is relative to the lock mechanism 31. It is configured to restrict movement (locked state).

  Further, each lock lever 30 rotates in the direction in which the tip side moves downward (clockwise direction in FIG. 7B), so that each insertion portion 44 formed in the engagement portion 38 is on the lower rail 5 side. Are removed from between the engaging claws 40. Thus, the lock mechanism 31 of the present embodiment is configured such that the restraint of the upper rail 6 is released, that is, the relative movement of the upper rail 6 with respect to the lower rail 5 is allowed (unlocked state). .

  More specifically, as shown in FIGS. 4, 5, 7, and 8, the seat slide device 10 according to the present embodiment has its lock levers 30 (30 a, 30 b) rotated and biased. A spring member 46 is provided as an urging member that presses the engaging portion 38 (38a, 38b) provided at the distal end against each engaging portion 41 (41a, 41b) on the lower rail 5 side.

  In the present embodiment, the spring member 46 is formed by bending the wire into two. Specifically, the spring member 46 includes a pair of extending portions 46a and 46b extending in the longitudinal direction of each lock lever 30, and a bent portion 46c formed on the base end side of both the extending portions 46a and 46b. , And is configured. Then, the distal end portions of the extending portions 46a and 46b come into contact with the distal end portions of the lock levers 30a and 30b, respectively, thereby rotating the lock levers 30a and 30b based on the elastic force (elastic restoring force). It is possible to energize.

  Specifically, in the spring member 46 of the present embodiment, the extending portions 46a, 46b of the lock levers 30a, 30b, each of which has an approximately U-shaped cross section, are located on the inner side of the both side plate portions 34 and the upper plate portion 35. It is comprised so that it may be arrange | positioned. In the present embodiment, a locking hole 47 is formed at the tip of the upper plate portion 35 constituting each lock lever 30a, 30b. The extending portions 46a and 46b of the spring member 46 are formed with locking portions 46e that are inserted into the locking holes 47 by bending the tip portions into a substantially U shape.

  In addition, the spring member 46 of the present embodiment has a latching portion 46g that is bent in a substantially arc shape at the base end portion of each of the extending portions 46a and 46b. And these each latching | locking part 46g is the mode which is latched from the upper side with respect to the said support shaft 32, and is supported by the upper rail 6 with each lock lever 30a, 30b.

  Further, in the spring member 46 of the present embodiment, the bent portions 46c and the distal end portions of the extending portions 46a and 46b are engaged with each other with reference to the respective engaging portions 46g engaged with the support shaft 32. It has a bent shape that is substantially W-shaped in a side view so as to be disposed above the portion 46g. Further, the spring member 46 is configured such that the bent portion 46 c abuts against the upper wall portion 16 of the upper rail 6. Then, the spring member 46 of the present embodiment is attached to the upper rail 6 in a bent state, and thereby urges the lock levers 30a and 30b independently of each other based on the elastic force. It is possible.

  That is, in the lock mechanism 31 of the present embodiment, the first lock lever 30a is rotated by being pressed by the extending portion 46a of the spring member 46. And the engaging part 38a provided in the front-end | tip is pressed on the 1st engaging part 41a provided in the inner wall part 14a of the lower rail 5 located in the left side in FIG.

  Similarly, the second lock lever 30b is also rotated by being pressed by the extending portion 46b of the spring member 46. And the engaging part 38b provided in the front-end | tip is pressed on the 2nd engaging part 41b provided in the inner wall part 14b of the lower rail 5 located in the right side in FIG.

  As shown in FIGS. 1 to 4, the seat slide device 10 of the present embodiment includes an operation handle 48 that is pulled up to adjust the slide position of the seat 1. In the present embodiment, the operation handle 48 is formed by bending a pipe material. Specifically, the operation handle 48 has a long and substantially rod-shaped operation portion 48 a extending in a direction substantially orthogonal to the extending direction of the upper rail 6. Further, both ends of the operation portion 48 a are bent along the extending direction of each upper rail 6. Then, as shown in FIG. 7, the operation handle 48 of the present embodiment is connected to the base end side (the left end portion in the figure) of each lock lever 30 with the bent portion as the connection portion 48b. It is configured.

  That is, the operating handle 48 of the present embodiment grips the operating portion 48a and pulls it up, thereby rotating each lock lever 30 connected to the connecting portion 48b clockwise in FIG. 7B. It is possible to make it. Then, as shown in FIGS. 8 and 9A and 9B, the lock mechanism 31 of the present embodiment causes the engaging portion 38 provided at the tip of each lock lever 30 to move downward, thereby The respective insertion portions 44 are removed from between the engaging claws 40 on the lower rail 5 side. That is, the engagement between each lock lever 30 supported by the upper rail 6 and each engagement portion 41 on the lower rail 5 side is released.

(Fine-step slide function and constant meshing structure)
Next, the fine slide function and the constant mesh structure provided in the lock mechanism of this embodiment will be described.

  As shown in FIGS. 9 to 11, in the locking mechanism 31 of the present embodiment, the groove width W0 between the engaging claws 40 constituting the engaging portions 41 on the lower rail 5 side is set to the engaging claws 40. The insertion portion 44 of each lock lever 30 inserted therebetween is set wider than the insertion width W <b> 1 of the insertion portion 44 so that the insertion portion 44 can move along the extending direction of the lower rail 5. Further, the lock mechanism 31 of the present embodiment has the second lock lever when each insertion portion 44 of the first lock lever 30a is engaged with each engagement claw 40 from one side along the extending direction of the lower rail 5. Each insertion part 44 of 30b is comprised so that it may engage with each engaging claw 40 from the other side along the extending | stretching direction of the lower rail 5. As shown in FIG. And the lock mechanism 31 of this embodiment is a structure which controls the relative movement of the upper rail 6 with respect to the lower rail 5 by this.

  For example, when the upper rail 6 is in the relative movement position as shown in FIGS. 9A and 9B, the engaging portions 38a of the first lock lever 30a have their insertion portions 44 in the extending direction of the lower rail 5. It engages with the first engaging portion 41a on the lower rail 5 side in such a manner that it contacts each engaging claw 40 from the first direction along the left side (the left side in FIG. 9A, the vehicle front side). At this time, the engaging portions 38b of the second lock lever 30b are arranged so that the respective insertion portions 44 are from the second direction along the extending direction of the lower rail 5 (right side, rear side of the vehicle in FIG. 9B). It engages with the second engaging portion 41 b on the lower rail 5 side in a manner of contacting each engaging claw 40.

  Further, when the upper rail 6 is in the relative movement position as shown in FIGS. 10 (a) and 10 (b), the engaging portions 38 a of the first lock lever 30 a are inserted in the extending direction of the lower rail 5. The first engaging portion 41a on the lower rail 5 side is engaged with the engaging claws 40 from the second direction along the right side (the right side in FIG. 10A, the vehicle rear side). At this time, the engaging portions 38b of the second lock lever 30b are arranged so that the respective insertion portions 44 are from the first direction along the extending direction of the lower rail 5 (the left side in FIG. 10B, the vehicle front side). It engages with the second engaging portion 41 b on the lower rail 5 side in a manner to contact each engaging claw 40.

  In this way, in the lock mechanism 31 of the present embodiment, each insertion portion 44 of the first lock lever 30a is attached to each engagement claw 40 constituting the first engagement portion 41a according to the movement position of the upper rail 6. The engaging direction and the engaging directions of the respective insertion portions 44 of the second lock lever 30b with respect to the respective engaging claws 40 constituting the second engaging portion 41b are interchanged. And, as the adjustment pitch N, the minimum movement distance at which the engagement direction with respect to each engagement claw 40 is switched between each insertion portion 44 of the first lock lever 30a and each insertion portion 44 of the second lock lever 30b, The moving position of the upper rail 6 can be adjusted.

  More specifically, as shown in FIGS. 9 to 11, in the lock mechanism 31 of the present embodiment, the first and second lock levers 30 a and 30 b are inserted into each other formed in the engaging portion 38. The parts 44 are configured to be arranged at equal positions in the extending direction of the lower rail 5. On the other hand, the first and second engaging portions 41a and 41b on the lower rail 5 side are out of phase with each other by “½” of the interval (formation pitch M) at which the engaging claws 40 are formed. Yes. Furthermore, in this embodiment, the sum (total value) of the insertion width W1 of each insertion portion 44 and the claw width W2 of each engagement claw 40 is also “1 / of the formation pitch M of each engagement claw 40. 2 "(W1 + W2 = 1 / 2M). Thus, the lock mechanism 31 of the present embodiment can adjust the moving position of the upper rail 6 by setting the adjustment pitch N to “½” of the formation pitch M of each engagement claw 40. Yes (fine slide function).

  Further, the lock mechanism 31 of the present embodiment is configured such that the first and second lock levers 30a and 30b perform locking and unlocking operations independently, so that one of the lock levers 30a and 30b has an insertion portion. 44 is inserted between the engaging claws 40, and the other insertion portion 44 is allowed to be removed from between the engaging claws 40. Thus, in the present embodiment, at least one of the insertion portions 44 of the first and second lock levers 30a and 30b is connected to each of the lower rails 5 regardless of the movement position of the upper rail 6 with respect to the lower rail 5. It is inserted between the engaging claws 40 constituting the joint portions 41a and 41b. That is, at any moving position, at least one engaging portion 38 of the first and second lock levers 30a and 30b is engaged with each engaging portion 41 on the lower rail 5 side. ing.

  For example, when the upper rail 6 is in the relative movement position as shown in FIGS. 12A and 12B, the engaging portion 38 a of the first lock lever 30 a has its insertion portions 44, the engaging claws 40, Interferes with each other so that the first engaging portion 41a on the lower rail 5 side cannot be engaged. However, at this time, with respect to the engaging portions 38b of the second lock lever 30b, the respective insertion portions 44 are inserted between the respective engaging claws 40 constituting the first engaging portion 41a on the lower rail 5 side. .

  Similarly, when the upper rail 6 is in the relative movement position as shown in FIGS. 13A and 13B, the engaging portions 38b of the second lock lever 30b are connected to the insertion portions 44 and the engaging claws 40, respectively. Is in an incapable state of engagement with the second engaging portion 41b on the lower rail 5 side. However, also at this time, the engaging portions 38a of the first lock lever 30a are inserted between the engaging claws 40 constituting the first engaging portions 41a on the lower rail 5 side. It has become so. And the lock mechanism 31 of this embodiment can ensure high reliability by implement | achieving the always meshing structure of each lock lever 30 with respect to each engaging part 41 of the lower rail 5 by this. Yes.

  Furthermore, in this embodiment, when only one of the first and second lock levers 30a and 30b is in the meshed state as described above, each insertion portion 44 on the meshed side is connected to the lower rail 5. It can move between the engaging claws 40 along the extending direction. And the lock mechanism 31 of this embodiment corrects the movement position of the upper rail 6 using this, and both the 1st and 2nd lock levers 30a and 30b are each engaging part by the side of the lower rail 5. It is possible to shift to a state of meshing with 41a and 41b, that is, a completely locked state.

(Operation handle connection structure)
Next, the connection structure of the operation handle with respect to each lock lever in this embodiment will be described.

  As shown in FIG. 4 and FIGS. 14 to 17, the lock lever 30 of the present embodiment has a base end side on the front side of the vehicle with respect to the support shaft 32 that constitutes the rotation shaft Q of the lock lever 30 (FIG. 15). Middle, left) Further, in the operation handle 48 of the present embodiment, each connection portion 48b provided at both ends of the operation portion 48a has a cylindrical shape that opens to the front end side (right side, vehicle rear side in FIG. 15). . And the operation handle 48 of this embodiment becomes a structure connected to each said lock lever 30 in the aspect by which the base end side of each lock lever 30 is inserted in each connection part 48b formed in the cylinder shape. ing.

  More specifically, as shown in FIGS. 4, 14 and 15, the lock lever 30 of the present embodiment is such that the base end portions of the side plate portions 34a and 34b are respectively inserted with the rotation axis Q interposed therebetween. A first base end portion 51 and a second base end portion 52 extending in the opposite direction to the front end side where the portion 44 is formed, that is, the vehicle front side, are configured.

  Specifically, in the present embodiment, the base end side of the first side plate portion 34a disposed on the inner side in the width direction of the upper rail 6 constitutes the first base end portion 51, and the upper rail 6 has a lower end than the first side plate portion 34a. The base end side of the second side plate portion 34b disposed in the vicinity of the side wall portion 15 of the upper rail 6 constitutes the second base end portion 52 by being disposed on the outer side in the width direction. Further, the second base end portion 52 extends to the vehicle front side to a position farther from the rotation shaft Q than the first base end portion 51. The upper plate portion 35 is basically at the position where the rotation axis Q of the lock lever 30 is formed, that is, the position where the insertion hole 36 is formed in each side plate portion 34. The operation handle 48 of the present embodiment is configured such that both first base end portions 51 of the lock levers 30a and 30b arranged in parallel are inserted into the cylinder of the connection portion 48b, whereby each of the lock levers 30a and 30b. , 30b.

  As shown in FIGS. 7, 8, and 15, the seat slide device 10 according to the present embodiment includes a spring member 49 interposed between the lock levers 30 a and 30 b and the operation handle 48. Yes. In the present embodiment, the spring member 49 is formed by bending a wire into two. The spring member 49 also includes a pair of extending portions 49a and 49b and a bent portion 49c formed on the base end side of both the extending portions 49a and 49b.

  In the present embodiment, the spring member 49 is configured such that the distal ends of the extending portions 49a and 49b are inserted into the U-shaped cross sections of the lock levers 30a and 30b, respectively. Has been attached to. The bent portion 49 c has an annular shape that expands in the width direction of the upper rail 6. Further, a groove portion 48 c extending in the width direction of the upper rail 6 is formed at the lower end portion of the connection portion 48 b of the operation handle 48. The spring member 49 of the present embodiment is interposed between the lock levers 30a and 30b and the connection portion 48b of the operation handle 48 in a state where the bent portion 49c is engaged with the groove portion 48c. .

  That is, the spring member 49 of the present embodiment has the bent portions 49c of the extension portions 49a and 49b that come into contact with the upper plate portion 35 of the lock levers 30a and 30b from the lower side. Is configured to support the connecting portion 48b of the operation handle 48. In the present embodiment, the lock levers 30a and 30b and the operation handle 48 are elastically connected based on the elastic force of the spring member 49.

  As shown in FIG. 16, in this embodiment, the connecting portion 48b of the operation handle 48 is a substantially rectangular tube having an internal space with a rectangular cross section whose longitudinal direction is the vertical direction (the vertical direction in the figure). It is formed in a shape. The in-cylinder height (vertical length) H1 of the connecting portion 48b is the first base end portion 51 (first side plate portion 34a) of each of the lock levers 30a and 30b inserted into the connecting portion 48b. Is set to a value larger than the insertion height (vertical length) H2 (H1> H2).

  That is, the operation handle 48 of the present embodiment is configured to allow the first base end portion 51 of each lock lever 30a, 30b inserted into the cylinder of the connection portion 48b to move in the vertical direction. Thus, the lock mechanism 31 according to the present embodiment is in a state where one of the first and second lock levers 30a and 30b is engaged with the engaging portion 41 of the lower rail 5, and the other is the engaging portion of the lower rail 5. 41 is configured to be allowed to be in a state of not meshing with 41.

  Further, when the operation handle 48 of the present embodiment is pulled up as described above, each lock lever in which the lower wall portion of the cylindrical connection portion 48b is inserted into the cylinder of the connection portion 48b. It is comprised so that the 1st base end part 51 of 30a, 30b may be lifted. Thus, the lock mechanism 31 of the present embodiment is configured to be able to unlock both the first and second lock levers 30a and 30b.

  On the other hand, as shown in FIGS. 14, 15, 17, and 18, the second base end portion 52 of each lock lever 30a, 30b is in a state where the lock lever 30a, 30b and the operation handle 48 are connected. In FIG. 2, the connecting portions 48b are arranged at positions sandwiching the width direction of the upper rail 6 respectively. In the present embodiment, the shaft-like member 53 is fixed to the connection portion 48 b of the operation handle 48 in such a manner as to penetrate the connection portion 48 b in the width direction of the upper rail 6. Specifically, the shaft-like member 53 has a front end portion of the upper rail 6 (see FIG. 3, the left end portion in the figure) in a state where the operation handle 48 and the lock levers 30a and 30b are connected. Located in the vicinity. And the 2nd base end part 52 of each lock lever 30a, 30b is respectively arrange | positioned above this shaft-shaped member 53 at the front-end | tip part.

  That is, the operation handle 48 of the present embodiment is configured such that when the pulling operation is performed, the shaft-like member 53 lifts the second base end portion 52 of each lock lever 30a, 30b from below. Thus, the lock mechanism 31 of the present embodiment can promptly unlock the first and second lock levers 30a and 30b.

  Furthermore, in this embodiment, the hole part 54 is formed in the both-sides wall part 15 of the upper rail 6 in the aspect which notched the front-end part. Further, the shaft end of the shaft-like member 53 is inserted into the hole portion 54. Thus, the lock mechanism 31 of the present embodiment is configured to define the operating range of the operation handle 48.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The seat slide device 10 includes a plurality of engaging claws 40 arranged at equal intervals along the extending direction, and first and second engaging portions 41a and 41b provided on the lower rail 5 and the upper rail 6 And first and second lock levers 30a and 30b that are juxtaposed between the first and second engaging portions 41a and 41b. Each of the first and second lock levers 30a and 30b has an insertion portion 44 that is inserted between the engaging claws 40 by being urged by the spring member 46 to be different from each other. It is pressed against the engagement portion 41 on the 5 side. Furthermore, the seat slide device 10 is inserted with the second lock lever 30b in a state where the insertion portion 44 of the first lock lever 30a is engaged with the engagement claw 40 from one side along the extending direction of the lower rail 5. The portion 44 is configured to engage with the engaging claw 40 from the other side along the extending direction of the lower rail 5. In the seat slide device 10, regardless of the movement position of the upper rail 6 with respect to the lower rail 5, at least one of the insertion portions 44 of the first and second lock levers 30 a and 30 b is connected to the engagement claws 40 on the lower rail 5 side. It is configured to be inserted between.

  According to the above configuration, the minimum moving distance at which the engagement direction with respect to each engagement claw 40 is switched between each insertion portion 44 of the first lock lever 30a and each insertion portion 44 of the second lock lever 30b is adjusted pitch. As N, the movement position of the upper rail 6 can be adjusted at an interval narrower than the formation pitch M of the respective engaging claws 40. Further, the lock levers 30a and 30b supported by the upper rail 6 and the engaging portions 41a and 41b on the lower rail 5 side are engaged with each other on both sides in the width direction of the upper rail 6 to ensure high lock rigidity. it can. Furthermore, at any moving position, it is possible to ensure that at least one (the engaging portion 38) of each of the lock levers 30a and 30b meshes with each engaging portion 41 on the lower rail 5 side. As a result, the degree of freedom of adjustment can be increased while ensuring high reliability with a simple configuration.

  (2) The sum of the insertion width W1 of each insertion portion 44 and the claw width W2 of each engagement claw 40 is set to “½” of the formation pitch M of each engagement claw 40 (W1 + W2 = 1). / 2M). The adjustment pitch N of the upper rail 6 is also set to “½” of the formation pitch M of each engagement claw 40 (N = ½M). Accordingly, the sum of the insertion width W1 of each insertion portion 44 and the claw width W2 of each engagement claw 40 is equal to the adjustment pitch N of the upper rail 6 (W1 + W2 = N), that is, each insertion to each engagement claw 40. It is set to be equal to the minimum moving distance of the upper rail 6 in which the engaging direction of the portion 44 is switched.

  According to the above configuration, the insertion portion 44 of the second lock lever 30b is engaged with the engagement claw 40 from one side along the extending direction of the lower rail 5 with the insertion portion 44 of the first lock lever 30a. The lower rail 5 can be engaged with the engaging claw 40 from the other side along the extending direction.

  (3) The first and second lock levers 30 a and 30 b are configured such that the insertion portions 44 are arranged at equal positions in the extending direction of the lower rail 5. With such a configuration, the lock levers 30a and 30b and the engaging portions 41a and 41b on the lower rail 5 side can be engaged with each other with good balance on both sides in the rail width direction. And thereby, higher reliability can be ensured.

  (4) The upper rail 6 is provided with a partition wall 37a that partitions between the first lock lever 30a and the second lock lever 30b. By comprising in this way, the interference between the 1st and 2nd lock levers 30a and 30b provided independently can be prevented. And thereby, higher reliability can be ensured by ensuring the smooth operation of each of the lock levers 30a and 30b.

  (5) Each lock lever 30 includes a first base end portion 51 and a second base end portion 52 that extend in a direction opposite to the distal end side on which the insertion portion 44 is provided with the rotation axis Q interposed therebetween. The first base end portion 51 is inserted with a gap in the vertical direction with respect to the connection portion 48b of the operation handle 48 formed in a cylindrical shape. The second base end portion 52 is a shaft as a pressing protrusion provided on the operation handle 48 at a position farther from the rotation axis Q than the first base end portion 51 when the operation handle 48 is pulled up. The member 53 is configured to be lifted by the member 53.

  According to the above configuration, the first base end portion 51 inserted into the cylinder of the connection portion 48b is movable in the vertical direction, so that one of the lock levers 30a and 30b is engaged with the engaging portion 41 on the lower rail 5 side. And the other is allowed not to mesh with the engaging portion 41 of the lower rail 5. When the operation handle 48 is pulled up, the connecting portion 48b lifts the first base end portion 51 inserted into the cylinder of the connecting portion 48b, thereby unlocking both the lock levers 30a and 30b. Can be made. When the pulling operation is performed, the shaft-like member 53 as a pressing protrusion provided on the connection portion 48b lifts the second base end portion 52, so that the first and second lock levers 30a and 30b are moved. The unlocking operation can be promptly performed.

  (6) The both side wall portions 15 of the upper rail 6 are formed with hole portions 54 through which the shaft ends of the shaft-like members 53 provided in the operation handle 48 are inserted so as to cut out the front end portions thereof. Thereby, the operation handle 48 can be stably held and its operating range can be defined.

[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. 19 to 21 and FIGS. 22 (a) and 22 (b), the seat slide device 10B according to the present embodiment is provided with each lock lever 30B (30a, 30b) supported rotatably inside the upper rail 6. ) Is provided.

  More specifically, the guide member 60 of the present embodiment has a substantially flat base 61 extending in the extending direction of the upper rail 6B, and a pair extending downward from both ends in the width direction (left and right in FIG. 20) of the base 61. The guide part 62 is provided. In this embodiment, the guide member 60 is formed by bending a plate material. In addition, a pair of long holes 63 extending in the extending direction of the upper rail 6B is formed in the upper wall portion 16B of the upper rail 6B. And the guide member 60 of this embodiment is attached to the upper rail 6B in the aspect which inserts the both guide parts 62 with respect to each of these long holes 63. As shown in FIG.

  That is, the guide member 60 of the present embodiment is configured such that both guide portions 62 inserted into the long holes 63 protrude into the upper rail 6B. Specifically, these guide portions 62 are arranged substantially in parallel with the partition member 37 provided in the upper rail 6B interposed therebetween. And this guide member 60 is the structure fixed to the upper rail 6B in the state which the base 61 contact | abuts on the upper surface of the upper wall part 16B.

  In the present embodiment, each of the lock levers 30B has a long hole-like guide that extends in the extending direction of the upper rail 6B, similar to the long hole 63 formed in the upper wall portion 16B of the upper rail 6B. A hole 64 is formed. That is, each lock lever 30 </ b> B of the present embodiment is configured such that the guide portion 62 of the guide member 60 is inserted into the guide hole 64. Thus, the seat slide device 10B of the present embodiment has a configuration in which the engaging portion 38 provided at the tip of each lock lever 30B moves up and down while being guided by the guide portion 62 of the guide member 60. It has become.

  As mentioned above, according to this embodiment, in addition to the effect in the said 1st Embodiment, each lock lever 30B can be operated more smoothly. And thereby, higher reliability can be ensured.

[Third Embodiment]
Hereinafter, a third embodiment relating to a vehicle seat slide device will be described with reference to the drawings. For convenience of explanation, the same components as those in the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 23 to 25, the seat slide device 10 </ b> C of the present embodiment includes a partition member 37 </ b> C in which the partition portion 37 a and the guide portion 62 are integrally provided. Specifically, the partition wall member 37C is provided with a plurality of claw portions 37d extending in parallel with the partition wall portion 37a by folding down the tips of flanges 37b extending on both sides in the width direction. That is, in the present embodiment, each of the claw portions 37d is inserted into the guide hole 64 of each lock lever 30C (30a, 30b). Thus, in the seat slide device 10C of the present embodiment, each claw portion 37d provided on the partition wall member 37C functions as the guide portion 62.

  In the present embodiment, two claw portions 37d serving as the guide portions 62 are formed on both sides in the width direction of the partition member 37C. Each lock lever 30C also includes two guide holes 64 corresponding to the respective claw portions 37d.

  Further, as shown in FIGS. 23 and 26 to 30, the operation handle 48 </ b> C of the present embodiment includes a connection portion 48 d formed in a substantially flat plate shape extending in the vertical direction. The connection portion 48d is formed by pressing a portion to be the connection portion 48d into a plate shape when the operation handle 48C is formed by bending using a pipe material.

  On the other hand, in the lock lever 30C of the present embodiment, at the base end portion, only the first side plate portion 34a disposed on the inner side in the width direction of the upper rail 6 is a position where the rotation axis Q of the lock lever 30C is formed, That is, it has a shape extending to the front side of the vehicle (left side in FIG. 30) from the position where the insertion hole 36 is formed. The operation handle 48 of the present embodiment is configured such that the connection portions 48d are disposed between the first side plate portions 34a arranged in the width direction (the left-right direction in FIG. 28) of the upper rail 6 and each lock lever 30C. It is configured to be connected to the base end portion of (30a, 30b).

  Specifically, like the seat slide device 10 in the first embodiment, a spring member 49 is interposed between the base end portions of the lock levers 30a and 30b and the connection portion 48b of the operation handle 48. . Also in the seat slide device 10C of the present embodiment, the lock levers 30a and 30b and the operation handle 48 are elastically connected based on the elastic force of the spring member 49.

  In this embodiment as well, a groove 48c that engages with the bent portion 49c of the spring member 49 is formed at the lower end of the connecting portion 48b. Further, the connecting portion 48b of the present embodiment is formed with a through hole 65 penetrating the connecting portion 48b in the thickness direction, that is, the width direction of the upper rail 6, and the shaft-like member 53 serving as a pressing protrusion is The through hole 65 is inserted. In the operation handle 48C of the present embodiment, the end portion of the first side plate portion 34a extending to the front side of the vehicle is disposed above the shaft-like member 53 in the connected state with the lock levers 30a and 30b. It is configured as follows.

  That is, the operation handle 48C of the present embodiment is configured such that when the pulling operation is performed, the shaft-like member 53 lifts the first side plate portion 34a of each lock lever 30a, 30b from below. Thus, the seat slide device 10C according to the present embodiment allows the first and second lock levers 30a and 30b to operate independently, and based on the lifting operation, the lock levers 30a and 30b. Can be quickly unlocked.

  Further, as shown in FIGS. 29 and 30, in the present embodiment, the connecting portion 48b of the operation handle 48C extends above the support shaft 32, the tip portion of which serves as the rotation axis Q of each lock lever 30a, 30b. ing. When the operation handle 48C is not operated, a gap is formed between the distal end portion of the connection portion 48b and the support shaft 32.

  That is, in the present embodiment, the first and second lock levers 30a and 30b can be independently operated by the gap set between the tip portion of the connection portion 48b and the support shaft 32. As a result, one of the lock levers 30a and 30b is allowed to engage with the engaging portion 41 of the lower rail 5, and the other is not engaged with the engaging portion 41 of the lower rail 5.

  Further, when the operation handle 48C is pulled up, the distal end portion of the connection portion 48b comes into contact with the support shaft 32 from above. Thus, the seat slide device 10C of the present embodiment is configured so that the lock levers 30a and 30b and the operation handle 48C are rotated integrally with the support shaft 32 as a fulcrum, thereby the lock levers 30a and 30b. And the operation handle 48C.

  As described above, also in this embodiment, the same effects as those of the second embodiment can be obtained. Further, by providing the guide portion 62 on the partition wall member 37C, the configuration can be simplified. As a result, the number of parts can be reduced, and the assembly work can be made more efficient and the manufacturing cost can be reduced.

In addition, you may change each said embodiment as follows.
In each of the above embodiments, the lock mechanism 31 is configured to be unlocked when the lock levers 30 (30B, 30C) rotate in the direction in which the engaging portion 38 provided at the tip moves downward. However, the engaging portion 38 may be unlocked by turning in the upward movement direction.

  -You may change arbitrarily the shape of the engaging part 38 by the side of each lock lever 30 (30B, 30C). For example, the insertion portions 44 may be arranged in a comb shape. And the number of each insertion part 44 may be changed arbitrarily.

  Further, the insertion width W1 of each insertion portion 44 and the claw width W2 of each engagement claw 40 constituting the engagement portion 41 on the lower rail 5 side may be changed. However, even in this case, the sum of the insertion width W1 of the insertion portion 44 and the claw width W2 of the engagement claw 40 is the minimum of the upper rail 6 in which the engagement direction of each insertion portion 44 with respect to each engagement claw 40 is switched. It may be configured to be equal to the movement distance, that is, the adjustment pitch N (W1 + W2 = N). Thereby, in a state where the insertion portion 44 of the first lock lever 30a is engaged with the engaging claw 40 from one side of the lower rail 5, the insertion portion 44 of the second lock lever 30b is along the extending direction of the lower rail 5. The engaging claw 40 is engaged from the other side.

  -Furthermore, in each said embodiment, the 1st and 2nd engaging part 41a, 41b provided in the lower rail 5 decided to have a phase which shifted | deviated 1/2 of the formation pitch M of each engaging claw 40 mutually. . However, the present invention is not limited to this, and the first and second engaging portions 41a and 41b have the same phase, and the insertion portions 44 of the first and second lock levers 30a and 30b are formed with each other. It is good also as a structure which has a phase which shifted 1/2 of M. Further, both the phase between the first and second engaging portions 41a and 41b and the phase between the first and second lock levers 30a and 30b may be shifted. In this case as well, the relationship of “insertion width W1 of insertion portion 44” + “claw width W2 of engagement claw 40” = “adjustment pitch N” as described above may be satisfied.

  In each of the above embodiments, the partition member 37 provided separately is fixed to the upper rail 6, but the partition portion 37 a may be formed integrally with the upper rail 6. Moreover, the structure which does not have such a partition part 37a may be sufficient. Further, the guide portion 62 may be formed integrally with the upper rail 6. And you may change arbitrarily also about the structure of these partition parts and a guide part.

  Each of the lock levers 30a, 30b is engaged with the engaging portion 41 of the lower rail 5, and the other is not engaged with the engaging portion 41 of the lower rail 5, while the lock lever 30a is engaged. , 30b may be arbitrarily changed in connection structure with the operation handle 48 as long as both can be unlocked.

Next, technical ideas that can be grasped from the above embodiments will be described together with effects.
(A) The first and second engagement portions provided on the lower rail have phases shifted from each other by a half of the formation pitch of the engagement claws, and the insertion width of the insertion portion and the engagement A vehicular seat slide device, characterized in that the sum of the claw width and the claw width is ½ of the pitch of each engaging claw.

  According to the above configuration, the insertion portion of the second lock lever extends along the extending direction of the lower rail while the insertion portion of the first lock lever engages with the engaging claw from one side along the extending direction of the lower rail. Engage with the engaging claw from the other side. Then, the half of the formation pitch of each engaging claw in which the engaging direction with respect to each engaging claw is switched between each inserting portion of the first lock lever and each inserting portion of the second lock lever is adjusted. The movement position of the upper rail can be adjusted as the pitch.

  (B) The upper rail includes a pair of side wall portions, and a hole portion through which the pressing protrusion is inserted is formed in each side wall portion. As a result, the operation handle can be stably held and its operating range can be defined.

  (C) Each of the lock levers includes a pair of side walls connected at the upper ends, and a support shaft provided on the upper rail is inserted into a long hole formed in each side wall extending in the longitudinal direction. The vehicle seat slide device is characterized in that the vehicle seat slide device is pivotally supported by the lever and is urged in a locking direction by an urging member disposed between the side wall portions. Thereby, each lock lever can be rotated more smoothly. As a result, higher reliability can be ensured.

  (D) Each of the lock levers is provided on the operation handle based on a pulling-up operation of the operation handle by extending in a direction opposite to the distal end side on which the insertion portion is provided with a rotation shaft interposed therebetween. A vehicular seat slide device comprising a base end portion that is lifted by a pressing projection.

  DESCRIPTION OF SYMBOLS 1 ... Seat, 5 ... Lower rail, 6, 6B ... Upper rail, 10, 10B, 10C ... Seat slide apparatus, 14 (14a, 14b) ... Inner wall part, 16, 16B ... Upper wall part, 30, 30B, 30C ... Lock lever , 30a ... first lock lever, 30b ... second lock lever, 31 ... lock mechanism, 32 ... support shaft, Q ... rotating shaft, 33 ... support hole, 34 ... side plate, 34a ... first side plate, 34b ... 2nd side plate part, 35 ... Upper plate part, 36 ... Insertion hole, 37, 37C ... Partition member, 37a ... Partition part, 37b ... Flange, 37d ... Claw part, 38 (38a, 38b) ... Engagement part, DESCRIPTION OF SYMBOLS 40 ... Engagement claw, 41 ... Engagement part, 41a ... 1st engagement part, 41b ... 2nd engagement part, 42 ... Through-hole, 44 ... Insertion part, 46, 49 ... Spring member (biasing member) 48, 48C ... operation handle, 48a ... operation unit, 48 ... Connection part, 48c ... Groove part, 48d ... Connection part, 51 ... First base end part, 52 ... Second base end part, 53 ... Shaft-shaped member (pressing protrusion), 54 ... Hole part, 60 ... Guide member, 62: guide portion, 64: guide hole, W0: groove width, W1: insertion width, W2: claw width, N: adjustment pitch, M: formation pitch, H1: in-cylinder height, H2: insertion height.

Claims (5)

An upper rail that supports the seat upward,
A lower rail that supports the upper rail in a relatively movable manner;
First and second engaging portions provided on the lower rail having a plurality of engaging claws arranged at equal intervals along the extending direction;
By being supported by the upper rail, they are juxtaposed between the first and second engaging portions so as to extend along the extending direction, and are inserted between the engaging claws by being urged to rotate. And first and second lock levers having an insertion portion and pressed against the first and second engagement portions,
In a state where the insertion portion of the first lock lever is engaged with the engagement claw from one side along the extending direction of the lower rail, the insertion portion of the second lock lever extends in the extending direction of the lower rail. Engaging the engaging claw from the other side along,
A vehicle seat configured such that the insertion portion of at least one of the first and second lock levers is inserted between the engagement claws regardless of the movement position of the upper rail with respect to the lower rail. A sliding device,
A vehicle seat slide device in which a sum of an insertion width of the insertion portion and a claw width of the engagement claw is equal to a minimum moving distance of the upper rail in which an engagement direction of the insertion portion with respect to the engagement claw is switched . An upper rail that supports the seat upward,
A lower rail that supports the upper rail in a relatively movable manner;
First and second engaging portions provided on the lower rail having a plurality of engaging claws arranged at equal intervals along the extending direction;
By being supported by the upper rail, they are juxtaposed between the first and second engaging portions so as to extend along the extending direction, and are inserted between the engaging claws by being urged to rotate. And first and second lock levers having an insertion portion and pressed against the first and second engagement portions,
In a state where the insertion portion of the first lock lever is engaged with the engagement claw from one side along the extending direction of the lower rail, the insertion portion of the second lock lever extends in the extending direction of the lower rail. Engaging the engaging claw from the other side along,
A vehicle seat configured such that the insertion portion of at least one of the first and second lock levers is inserted between the engagement claws regardless of the movement position of the upper rail with respect to the lower rail. It met sliding device,
It said first and second locking lever is configured seat slide device for a vehicle such that the insertion of one another are arranged in equal position in the extending direction of the lower rail. An upper rail that supports the seat upward,
A lower rail that supports the upper rail in a relatively movable manner;
First and second engaging portions provided on the lower rail having a plurality of engaging claws arranged at equal intervals along the extending direction;
By being supported by the upper rail, they are juxtaposed between the first and second engaging portions so as to extend along the extending direction, and are inserted between the engaging claws by being urged to rotate. And first and second lock levers having an insertion portion and pressed against the first and second engagement portions,
In a state where the insertion portion of the first lock lever is engaged with the engagement claw from one side along the extending direction of the lower rail, the insertion portion of the second lock lever extends in the extending direction of the lower rail. Engaging the engaging claw from the other side along,
A vehicle seat configured such that the insertion portion of at least one of the first and second lock levers is inserted between the engagement claws regardless of the movement position of the upper rail with respect to the lower rail. It met sliding device,
The vehicle seat slide device in which the upper rail is provided with a partition wall partitioning the first lock lever and the second lock lever. An upper rail that supports the seat upward,
A lower rail that supports the upper rail in a relatively movable manner;
First and second engaging portions provided on the lower rail having a plurality of engaging claws arranged at equal intervals along the extending direction;
By being supported by the upper rail, they are juxtaposed between the first and second engaging portions so as to extend along the extending direction, and are inserted between the engaging claws by being urged to rotate. And first and second lock levers having an insertion portion and pressed against the first and second engagement portions,
In a state where the insertion portion of the first lock lever is engaged with the engagement claw from one side along the extending direction of the lower rail, the insertion portion of the second lock lever extends in the extending direction of the lower rail. Engaging the engaging claw from the other side along,
A vehicle seat configured such that the insertion portion of at least one of the first and second lock levers is inserted between the engagement claws regardless of the movement position of the upper rail with respect to the lower rail. It met sliding device,
The first and second lock levers include a first base end portion and a second base end portion extending in a direction opposite to a tip end side on which the insertion portion is provided across a rotation shaft,
The first base end portion is inserted with a gap in the vertical direction with respect to the connection portion of the operation handle formed in a cylindrical shape,
The second base end is lifted by a pressing protrusion provided on the operation handle at a position farther from the rotation shaft than the first base end when the operation handle is pulled up. configured seat slide device for a vehicle. In the vehicle seat slide device according to any one of claims 1 to 4,
A vehicular seat slide device, wherein the upper rail is formed with a guide portion for guiding the operation of the first and second lock levers.