JP6385805B2 - Slide rail device for vehicle - Google Patents

Description

  The present invention relates to a vehicular slide rail device that slidably supports a seat, and more particularly to a vehicular slide rail device that includes a slide lock mechanism that regulates the sliding of a seat.

  A pair of left and right lower rails fixed to a vehicle interior floor surface, and a pair of left and right upper rails that support a seat portion of the seat and can slide in a longitudinal direction with respect to the left and right lower rails; Many are equipped with a slide lock mechanism for restricting the slide of the upper rail. Various structures are known for the slide lock mechanism. As a configuration suitable for downsizing, a lock member that engages and disengages with the lower rail and an urging member that maintains the locked state are provided inside the upper rail. There is a slide lock mechanism.

  Patent Document 1 proposes a structure in which a lock member is supported so as not to rattle the upper rail in a slide lock mechanism with a built-in rail. Specifically, a lock spring having a lock portion that engages and disengages in the lock groove of the lower rail and has a spring property that biases the lock portion in the lock direction, and a lock lever that has a lock portion that engages and disengages in the lock groove of the lower rail. The support portion provided on the upper rail is supported movably in the vertical direction with the support portion as a fulcrum, and a pair of support surfaces is formed on the support portion. In the form using the lock spring, the engagement assisting urging force in a predetermined direction is applied to the lock spring and the lock lever by a separate urging means for urging the lock lever in the form using the lock lever, and in the form using the lock lever, The pair of support surfaces in the support portion have a shape in which the distance between the support surfaces becomes narrower toward the direction of the engagement assist biasing force. Accordingly, the supported portions of the lock spring and the lock lever are pressed against both of the pair of support surfaces, and the back and forth movement with respect to the pair of support surfaces is restricted, and rattling of the lock spring and the lock lever is prevented.

JP 2012-126183 A

  In the slide rail device of Patent Document 1, a pair of retaining portions that have a U-shaped cross-sectional portion that is opened downward at the center in the width direction and that are secured to the lower rail on both sides of the U-shaped cross-sectional portion. In the upper rail having a so-called hat-shaped (Ω-shaped) cross-sectional shape, the support portion is formed by cutting and raising each of a pair of left and right side walls (opposing walls) constituting the U-shaped cross-sectional portion. V-shaped grooves are formed in the left and right support portions, respectively, and each V-shaped groove constitutes the pair of support surfaces. This configuration is excellent in that if the left and right support portions (V-shaped grooves) are in a positional relationship as designed, the support portions can support the lock spring and the lock lever with high accuracy without rattling or falling. However, since the supported portion of the movable member is engaged with both the left and right support portions without play, variations in the relative positions of the left and right support portions (V-shaped grooves) occur due to component accuracy errors and the like. In such a case, the workability of assembling the lock spring and the lock lever to the upper rail may be deteriorated.

  The present invention provides a vehicular slide rail device in which a lock member constituting a slide lock mechanism is supported by a support portion in an upper rail, which can suppress rattling of the lock member with respect to the upper rail, and can be assembled and unlocked. An object of the present invention is to provide a vehicular slide rail device having excellent operability at the time.

  The present invention includes a lower rail that extends in the front-rear direction and includes a plurality of lock grooves formed side by side in the front-rear direction and is immovable with respect to the vehicle floor, and a pair of side walls that are spaced apart in the width direction. The present invention relates to a vehicle slide rail device including an upper rail supported so as to be slidable in a direction, a lock state that restricts sliding of the upper rail with respect to the lower rail, and a slide lock mechanism that is in an unlocked state that allows sliding. The slide lock mechanism includes a lock member. The lock member includes a lock portion that engages and disengages with the lock groove, and a supported portion that engages with a support portion provided in the upper rail. The supported portion serves as a fulcrum. The lock portion is displaced in the vertical direction to be engaged with and disengaged from the lock groove, and the lock portion is biased in a direction to engage the lock groove. A pair of support portions having different positions in the width direction of the upper rail are provided on the pair of side walls of the upper rail, and one of the pair of support portions is in contact with the supported portion and before and after the supported portion with respect to the upper rail. It is a reference support part that determines the position and the vertical position. The other of the pair of support portions is a relief support portion with which the supported portion is engaged with a clearance. The slide lock mechanism further supports a lock release lever on the upper rail as a member for unlocking the lock member. The lock release lever is rotatable between a lock position that allows the lock portion of the lock member to engage with the lock groove and an unlock position that presses the lock member in a direction in which the lock portion escapes from the lock groove. There is a first pressing portion and a second pressing portion that press the locking member when rotating to the unlock position. The first pressing portion and the second pressing portion are inserted between the pair of side walls of the upper rail, the first pressing portion is located on the reference support portion side in the width direction of the upper rail, and the second pressing portion is Located on the relief support side. And the position setting means which determines the width direction position of the lock release lever with respect to an upper rail is provided so that a 2nd press part may adjoin to the side wall by the side of the escape support part of an upper rail.

  The position setting means may be configured to make the distance of the first pressing portion with respect to the side wall of the upper rail on the reference support portion side smaller than the distance of the second pressing portion with respect to the side wall of the upper rail on the relief support portion side. As an example, a protrusion that protrudes from the second pressing portion of the lock release lever toward the side wall on the side of the escape support portion of the upper rail can be used as the position setting means. More specifically, it is preferable that the first pressing portion and the second pressing portion are formed at one end portion of the lock release lever in the front-rear direction, and a protrusion is formed at the end of the second pressing portion.

  The lock member can be configured as a lock spring that urges the lock portion in a direction to engage the lock groove by its urging force. In this case, the lock portion has a pair of lock pieces extending substantially symmetrically with respect to the width direction of the upper rail. In the locked state, each lock piece penetrates the lock groove of the lower rail and the pair of side walls of the upper rail. It is good to press the insertion part of each lock piece into this space with the 1st press part and the 2nd press part of a lock release lever. When the position setting means is a protrusion protruding from the second pressing portion of the lock release lever, the protrusion is preferably provided at a position in the front-rear direction that does not overlap the lock piece.

  According to the present invention, rattling of the lock member can be suppressed by the reference support portion in the upper rail, and the assemblability of the lock member can be enhanced by the escape support portion. Further, by providing position setting means for restricting the second pressing portion of the unlocking lever from approaching the side wall on the side of the upper support of the upper rail, the reference supporting portion is provided when the unlocking lever presses the locking member. A force is easily applied to the side, and even if the upper rail is released and the support portion is formed, the lock member is not easily tilted by the unlocking operation. As a result, the lock can be reliably released.

It is the perspective view which looked at the slide seat apparatus of one Embodiment of this invention from the front diagonal upper direction which showed the upper rail slid to the rear-end position. It is the disassembled perspective view seen from the front diagonal upper direction of the slide rail apparatus which abbreviate | omits and shows the rail unit of the right side (outer side). It is sectional drawing which follows the III-III arrow line of FIG. It is a disassembled perspective view of the rail unit which shows a lower rail by a longitudinal cross-sectional view. It is a typical side view which shows the state of a lock spring when a lock release lever is located in a lock position and an unlock position. FIG. 4 is a side view showing the upper rail, the lock release lever, the lock spring, and the loop handle in a locked state, with only the upper rail viewed in a vertical side view. FIG. 7 is a side view similar to FIG. 6 when in an unlocked state. It is a top view of the slide sheet apparatus of FIG. FIG. 9 is a plan view of a state where the lower rail is omitted from FIG. 8 and the loop handle and the lock release lever are removed from the upper rail. FIG. 6 is a plan view of a part of the slide seat device seen through a rear end locking portion of a lock spring and a rear locking piece of an upper rail. FIG. 5 is a side view showing a relationship between a rear locking piece on the side having a V-shaped groove in the upper rail and a rear end locking portion of the lock spring, as seen from a longitudinal side view of a part of the upper rail and the rear end locking portion. It is the side view which showed the relationship between the back latching piece of the side which has a U-shaped groove | channel in an upper rail, and the rear-end latching | locking part of a lock spring by seeing a part of upper rail and a rear-end latching part as a vertical side view. FIG. 13 is a side view showing the left and right rear locking pieces shown in FIGS. 11 and 12 in an overlapping manner. It is a perspective view which expands and shows the spring press piece vicinity of the lock part of a lock spring, and a lock release lever. It is the figure which looked at the spring press piece vicinity of the lock release lever from the bottom face side of the lower rail. It is the figure which looked at the positional relationship of a spring press piece and a lock spring from the bottom face side of a lower rail in the state where the clearance gap between a pair of side wall of an upper rail and a lock release lever is substantially equal on right and left. It is the figure which looked at the positional relationship of a spring press piece and a lock spring from the bottom side of the lower rail in the state where the lock release lever is biased to the reference side in the width direction of the upper rail. It is the figure which looked at the positional relationship of a spring press piece and a lock spring from the bottom face side of the lower rail in the state where the lock release lever is biased to the escape side in the width direction of the upper rail. It is sectional drawing of the slide sheet apparatus which follows the XIX-XIX arrow line of FIG. It is sectional drawing of the slide sheet apparatus in alignment with the XX-XX arrow line of FIG. 18 in the state in which the lock release lever was biased to the halfway position to the escape side. FIG. 19 is a cross-sectional view of the slide sheet device taken along the line XX-XX in FIG. 18 in a state in which the unlocking lever is biased to the maximum on the escape side. It is sectional drawing of the slide sheet apparatus which follows the XXII-XXII arrow line of FIG. In the comparative example in which the shape of the rear end of the lock release lever is different from that of the embodiment of the present invention, the positional relationship between the spring pressing piece and the lock spring when the lock release lever is biased to the escape side in the width direction of the upper rail. It is the figure seen from the bottom face side of a lower rail. It is sectional drawing of the slide sheet apparatus of the comparative example which follows the XXIV-XXIV arrow line of FIG. It is sectional drawing of the slide sheet apparatus of the comparative example in the same position as the XXII-XXII arrow line of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The direction in the following description is based on the arrow direction indicated in the figure. A slide rail device 10 is provided on the floor surface of an automobile (vehicle) (not shown), and a seat (having a seat back and a seat cushion) is fixed to the upper surface of the upper rail 30 constituting the slide rail device 10. It is.

Next, the detailed structure of the slide rail device 10 will be described.
The illustrated slide rail device 10 supports a right (driver's seat) seat, and as a large component, a pair of left and right rail units 20 and a loop handle 60 that connects front end portions of the left and right rail units 20 are provided. Are provided.
The left and right rail units 20 have the following structure.
The rail unit 20 has a pair of left and right lower rails 21 that are fixed to the vehicle floor via a pair of front and rear brackets 15 and are symmetrical to each other. The lower rail 21 is a metal channel member extending in the front-rear direction and having an upper surface opened, and includes a substantially horizontal bottom wall 22, a pair of left and right outer wall portions 23 extending upward from left and right sides of the bottom wall 22, and left and right outer walls. A pair of left and right ceiling portions 24 extending inward from the upper edge portion of the portion 23 and a pair of left and right inner wall portions 25 extending downward from the inner edge portions of the left and right ceiling portions 24 are provided. The front and rear brackets 15 are fixed to the vicinity of both front and rear ends of the lower rail 21 via two rivets 16 and 17, and the heads 16 a and 17 a of the rivets 16 and 17 are both located immediately above the bottom wall 22. Yes. As shown in FIG. 4 and the like, the upper edge portions (portions connected to the ceiling portion 24) of the left and right inner wall portions 25 are base end support portions 26 extending in the front-rear direction. A number of locking teeth 27 whose upper ends are connected to the base end support portion 26 are arranged at equal intervals in the front-rear direction at the lower edge portions of the left and right inner wall portions 25, and between the adjacent locking teeth 27. A lock groove 28 having an open lower end is formed. Adjacent lock grooves 28 have the same pitch (front-rear spacing), and the front-rear width of each lock groove 28 is also the same. Further, a front end stopper 29a and a rear end stopper 29b located near the front end and the rear end of the lower rail 21 are formed on the lower edge portions of the left and right inner wall portions 25 by cutting and raising. The right front end stopper 29a and the rear end stopper 29b are cut and raised so as to incline to the right, and the left front end stopper 29a and the rear end stopper 29b are cut and raised to incline to the left. As shown in FIGS. 19 to 21, a cut-and-raised portion 29 c is formed in the lower rail 21 between the front end stopper 29 a and the rear end stopper 29 b in the front-rear direction. The cut-and-raised portion 29 c is formed by cutting and raising a portion close to the bottom wall 22 in each of the pair of outer wall portions 23 of the lower rail 21 toward the center side in the width direction of the lower rail 21.

The rail unit 20 includes an upper rail 30 that can slide in the front-rear direction with respect to the lower rail 21.
The upper rail 30 is a metal channel member that extends in the front-rear direction and has an open bottom surface. The base 31 has a substantially downward U-shaped cross-section, and the longitudinal directions of the lower edges of the side walls 31a and 31b on the left and right sides of the base 31. A rising wall 32 extending upward from a portion excluding the central portion, and a locked wall 33 extending upward from the central portion. As shown in FIG. 2, FIG. 4, FIG. The longitudinal movement restricting grooves 34a and 34b are formed upward. As shown in FIGS. 1, 2, 4, and 6 to 13, rear locking pieces (support portions) that extend inward and extend upward are formed on the rear portions of the left and right side walls 31 a and 31 b of the base portion 31. ) 36 is formed by cutting and raising, and a downward V-shaped groove (reference support portion) 36a is formed at the upper end of the left rear locking piece 36 (indicated by reference numeral 36L). A downward U-shaped groove (relief support portion) 36b is formed at the upper end of (indicated by reference numeral 36R). As shown in FIG. 11, the front and back support surfaces 36c of the V-shaped groove 36a are symmetrical in the front-rear direction, and the distance between the front and rear is gradually narrowed toward the lower side. As shown in FIGS. 12 and 13, the front and rear clearance surfaces 36d of the U-shaped groove 36b have a larger interval than the front and rear support surfaces 36c of the V-shaped groove 36a, and the bottom portion (front and rear clearance surfaces) of the U-shaped groove 36b. 36d) is located below the bottom of the V-shaped groove 36a. Inwardly-facing front locking pieces 37 are formed by cutting and raising at portions located slightly in front of the central portions of the left and right side walls 31a and 31b of the base portion 31, respectively.

  A metal inner reinforcement 47 for increasing the rigidity of the upper rail 30 is fixed to the inner surface of the base portion 31 of the upper rail 30. Further, a metal upper reinforcement 12 for increasing the rigidity of the upper rail 30 is fixed to the upper surface of the left upper rail 30 in a state where the locked wall 33 and the front and rear positions are aligned.

  The rail unit 20 further includes a lock release lever 40 attached to the upper rail 30 and a lock spring (lock member) 50. The lock release lever 40 is a metal channel member that is formed by press-molding a metal plate, extends in the front-rear direction, and has an open bottom surface, and includes a pair of left and right side walls 41. The front end portion of the unlocking lever 40 has a U-shaped cross section in which the upper portions of the pair of side walls 41 are connected by the upper wall 42. As shown in FIGS. 2, 4, 6, and 7, a rotation contact convex portion 43 extending in the left-right direction protrudes from the upper surface of the lock release lever 40. A pair of left and right spring pressing pieces (first pressing portions) 44L and a spring pressing piece (second pressing portion) 44R project from the rear end of the unlocking lever 40, and An upward spring hooking groove 45 is recessed in the lower edge portion of the front portion (the portion located in front of the rotating contact convex portion 43). Each of the pair of spring pressing pieces 44L, 44R has a flat plate shape formed by bending the lower edges of the pair of side walls 41 toward the side.

  The lock spring 50 is a symmetrical member obtained by bending a single metal wire. A pair of front and rear (four in total) lock portions 51F and lock portions 51G that extend substantially horizontally toward the outside are formed in portions located slightly rearward from the longitudinal center portion of the left and right side portions of the lock spring 50. . As shown in FIG. 14, each of the lock part 51F and the lock part 51G is a pair of front and rear lock pieces 51a extending linearly from the main body of the lock spring 50 toward the outside (the right one is the right side and the left one is the left side). And a connecting portion 51b extending in the front-rear direction for connecting the tips of the pair of lock pieces 51a. In addition, the lock pieces 51a adjacent to each other of the lock part 51F and the lock part 51G that are in a line-up relationship in the front-rear direction are connected by a connection part 51c that extends in the front-rear direction. A portion of the lock spring 50 located behind the lock portion 51G is substantially horizontal in the free state, and a portion of the lock spring 50 located forward of the lock portion 51F is substantially horizontal in the free state. A pair of left and right front end locking pieces 52 project outward and substantially horizontally at the front end of the lock spring 50. The rear end portion of the lock spring 50 constitutes a rear end locking portion (supported portion) 53 extending in the left-right direction in plan view.

  The lock release lever 40 is accommodated substantially entirely in the upper rail 30 from the front end opening of the upper rail 30, and the rotation contact convex portion 43 is in contact with the ceiling surface of the base 31 (the contact portion P in FIGS. 6 and 7). Reference: A space is formed between a portion other than the rotation contact convex portion 43 on the upper surface of the unlocking lever 40 and the ceiling surface of the base portion 31). As shown in FIGS. 6, 7, 11 to 13, the lock spring 50 inserts the rear end locking portion 53 into the V-shaped groove 36 a and the U-shaped groove 36 b of the left and right rear locking pieces 36 L and 36 R from above. (Refer to the triangle mark in FIG. 6. Although only the U-shaped groove 36b is shown in FIG. 6, as shown in FIGS. 11 and 13, the rear end locking portion 53 is also inserted into the V-shaped groove 36a. The left and right side lock portions 51F and 51G are positioned slightly forward of the left and right front locking pieces 37 (see the triangles in FIG. 6), and the lock portions 51F and 51G are The front and rear movement restricting grooves 34a and 34b are engaged from below, and the left and right front end locking pieces 52 are locked to the spring hooking grooves 45 from below (see the upward arrow in FIG. 6). The left and right spring pressing pieces 44L and 44R abut on the upper surfaces of the left and right lock portions 51F. It is caused. More specifically, as shown in FIGS. 16 to 21, the lock piece 51a is inserted into the longitudinal movement restricting grooves 34a and 34b among the lock portions 51F and 51G, and the lock piece 51a is further inserted into the lock groove 28 in the locked state. Is done. A part of each lock piece 51a passes through the lock groove 28 and the longitudinal movement restricting grooves 34a and 34b and protrudes to the inside of the base portion 31 of the upper rail 30 (the space between the pair of side walls 31a and 31b). The protruding end portion of the lock piece 51a into 31 is connected by the connecting portion 51c. The spring pressing pieces 44L and 44R can come into contact with a portion of the lock piece 51a inserted into the base portion 31 and the connection portion 51c. The lock piece 51a further passes through the lock groove 28 and the longitudinal movement restricting grooves 34a and 34b and protrudes to the outside of the wall to be locked 33. The protruding end of the wall to be locked 33 is connected by the connecting portion 51b. Is done. The lock spring 50 attached to the upper rail 30 and the lock release lever 40 in this way is elastically deformed to generate an upward biasing force (elastic force) (see the upward arrow in FIG. 6). By this urging force, the rotational contact convex portion 43 of the unlocking lever 40 is pressed against the ceiling portion of the base 31, and the unlocking lever 40 is rotated about the contact portion P between the ceiling portion and the rotational contact convex portion 43. The lock release lever 40 is held in the locked position shown in FIG. 6 when it is rotatable around the virtual rotation axis in the left-right direction and no upward external force is applied to the front end portion (upper wall 42) of the lock release lever 40. The When the lock release lever 40 is in the locked position, the lock portions 51F and 51G of the lock spring 50 engage with the corresponding lock grooves 28 (the lock portions 51F and 51G drawn in solid lines in FIG. 5 and FIGS. 19 to 21). (See the lock portion 51F drawn with a solid line). Further, a partial force of the urging force generated by the elastic deformation of the lock spring 50 becomes a urging force that urges the peripheral portion of the rear end locking portion 53 (a triangular mark portion in FIG. 6) downward. The component force urges the rear end locking portion 53 to move toward the lower ends of the V-shaped groove 36a and the U-shaped groove 36b. Then, when the rear end locking portion 53 reaches a predetermined vertical position, the two front and rear portions of the rear end locking portion 53 come into contact with both the support surfaces 36c of the front and rear V-shaped grooves 36a, and the urging force This contact state is maintained (see FIG. 11). On the other hand, the U-shaped groove 36b has a larger clearance with respect to the rear end locking portion 53 than the V-shaped groove 36a (see FIGS. 12 and 13).

  On the other hand, when an upward external force is applied to the front end portion (upper wall 42) of the lock release lever 40 against the urging force of the lock spring 50, the lock release lever 40 rotates to the unlock position shown in FIG. Then, as shown in FIG. 7, the spring pressing pieces 44L and 44R of the lock release lever 40 push the lock spring 50 downward, so that the lock spring 50 and the rear end locking portion 53 receiving the support of the rear locking piece 36 are forward locked. The lock portions 51F and 51G are elastically deformed downward with a portion receiving the support of the piece 37 as a fulcrum, and escape from the corresponding lock grooves 28 (the lock portions 51F and 51G drawn in phantom lines in FIG. FIG. 19 to FIG. 21 refer to the lock part 51F drawn by phantom lines).

  When the integrated upper rail 30, the lock release lever 40, and the lock spring 50 are assembled by being inserted into the lower rail 21 from the front end opening or the rear end opening of the lower rail 21, as shown in FIG. The locked wall 33 enters the space formed between the outer wall portion 23 and the inner wall portion 25 (see FIGS. 19 to 21 for the locked wall 33), and can be rotated by a retainer 55 disposed in the space. Since the plurality of supported bearing balls 56 are rotatably in contact with the outer surface of the rising wall 32 and the inner surface of the outer wall portion 23, the upper rail 30 (and the lock release lever 40 and the lock spring 50) are in the front-rear direction with respect to the lower rail 21. It becomes possible to slide. That is, the upper rail 30 has a front end position where the front end surfaces of the left and right locked walls 33 abut against the front end stopper 29a, and a rear end position where the rear end surfaces of the left and right locked walls 33 abut against the rear end stopper 29b (positions in FIG. 1). ). The cut-and-raised portion 29c (FIGS. 19 to 21) of the lower rail 21 is located on the extension of the retainer 55, and the cut-and-raised portion 29c restricts sliding of the retainer 55 and the bearing ball 56 in the front-rear direction.

  When the lock release lever 40 is positioned at the lock position in FIG. 6, the spring pressing pieces 44L and 44R abut on the upper surface of the lock spring 50 from above, and as shown by the solid lines in FIGS. Since the lock portions 51F and 51G engage with the corresponding forward / backward movement restriction grooves 34a and 34b and the lock groove 28 from below, the sliding of the upper rail 30 relative to the lower rail 21 is restricted. On the other hand, when the lock release lever 40 is rotated to the unlocked position in FIG. 7 and the spring pressing pieces 44L and 44R move downward, the springs as shown by phantom lines (dashed lines) in FIGS. Since the lock portions 51F and 51G that have received the pressing force by the pressing pieces 44L and 44R escape downward from the engaged lock groove 28, the upper rail 30 can slide with respect to the lower rail 21.

  The pair of left and right rail units 20 assembled as described above basically have a common configuration except that the right lower rail 21 is shorter than the left lower rail 21. A seat cushion of a seat (not shown) is fixed to the upper surface of the upper rail 30 after the units 20 are parallel to each other and the front and rear positions of the units 20 are aligned (the sliding position of the upper rail 30 with respect to the lower rail 21 is also matched). Further, the lower rail 21 of each rail unit 20 is fixed to the vehicle floor via the bracket 15.

  The loop handle 60 is connected to the lock release lever 40 of the pair of left and right rail units 20. The metal loop handle 60 includes an operation portion 61 extending in the left-right direction, a pair of inclined portions extending while being inclined outward from the left and right end portions of the operation portion 61, and downward from the left and right end portions of each inclined portion. An extending downward portion 61a and a pair of rear end connecting portions 62 and 63 extending rearward from the lower ends of the left and right downward portions 61a are provided. As shown in FIG. 2, the rear end connection portions 62 and 63 each have a square tube-like cross-sectional shape.

  The loop handle 60 is locked by inserting the left and right rear end connecting portions 62 and 63 into the inner space (the space surrounded by the pair of side walls 41 and the upper wall 42) from the front end of the unlocking lever 40 from the front. It is connected to the front end of the release lever 40. The loop handle 60 connected to the lock release lever 40 can transmit the upward rotational force to the lock release lever 40 via the rear end connection portions 62 and 63.

Next, the operation of the slide rail device 10 will be described.
In a locked state where no external force is applied to the loop handle 60, the lock release lever 40 is positioned at the lock position, and the lock portions 51F and 51G of the lock spring 50 are positioned within the lock groove 28 of the lower rail 21, so that the upper rail 30 The sliding operation in the front-rear direction with respect to the lower rail 21 is restricted. At this time, the back and forth rattling between the lock spring 50 and the lower rail 21 does not occur due to the engagement between the lock portions 51F and 51G and the lock groove 28. Further, since the rear end locking portion 53 of the lock spring 50 is engaged with the V-shaped groove 36a of the rear locking piece 36L formed in the upper rail 30 in a state where the back and forth movement is restricted, the lock spring 50 and the upper rail There is no back-and-forth chatter between 30 and 30. Therefore, in the locked state, even if a moving force in the front-rear direction is applied to the upper rail 30 due to the load due to the seating, the upper rail 30 and the lower rail 21 move back and forth with respect to the lock spring 50, and the rear end locking portion 53 and the rear locking No abnormal noise is generated between the pieces 36 or between the lock portions 51F and 51G and the lock groove 28.

  When the unlocking lever 40 is positioned at the locking position, if the passenger grasps the operating portion 61 with his hand and rotates the entire loop handle 60 upward, the unlocking lever 40 moves upward together with the rear end connecting portions 62 and 63. Rotate to. Then, the unlocking lever 40 located at the locked position rotates to the unlocked position (see FIG. 7), and the lock portions 51F and 51G escape from the lock groove 28 of the lower rail 21, so that the sliding with respect to the lower rail 21 is restricted. The upper rail 30 thus made can slide with respect to the lower rail 21. During this unlocking operation, the rear end locking portion 53 in the V-shaped groove 36a is further pressed against the front and rear support surfaces 36c by a partial force of the urging force generated by the elastic deformation of the lock spring 50.

  In the slide rail device 10 described above, the lock spring 50 constituting the slide lock mechanism can be accurately supported with respect to the upper rail 30, and the lock release operation by the lock release lever 40 can be reliably performed. Details will be described. In the following description, of the pair of left and right rail units 20, the right (left side when viewed from the front) rail unit 20 is defined as the outer side, and the left (right side when viewed from the front) rail unit 20 is defined as the inner side.

  As described above, the rear end engaging portion 53 of the lock spring 50 is engaged with the front and rear support surfaces 36c of the V-shaped groove 36a formed in the left rear engaging piece 36L of the upper rail 30, whereby the rear end The front-rear position and the vertical position of the locking part 53 are determined, and the back-and-forth of the lock spring 50 relative to the upper rail 30 is restricted (FIG. 11). The rear end locking portion 53 is further inserted into the U-shaped groove 36b of the rear locking piece 36R on the right side of the upper rail 30, but the U-shaped groove 36b is wider in the front-rear direction than the V-shaped groove 36a. Further, since it is formed deeply in the downward direction, the clearance with respect to the rear end locking portion 53 is larger than that of the V-shaped groove 36a (FIGS. 12 and 13). In other words, of the pair of left and right rear locking pieces 36L and 36R of the upper rail 30, the rear locking piece 36L having the V-shaped groove 36a serves as a reference support portion that suppresses rattling of the rear end locking portion 53, and is U-shaped. The rear locking piece 36R having the groove 36b serves as a support portion having a relief function for supporting the rear end locking portion 53 with a margin that does not interfere with the support by the rear locking piece 36L. 8 to 10 and FIG. 14 and thereafter, the side (left side in the seated state, right side when viewed from the front) of each rail unit 20 on which the rear locking piece 36L is provided is referred to as the “reference side”, and the rear locking piece. The side where 36R is provided (the right side in the seated state, the left side when viewed from the front) is defined as the “relief side”.

  As described above, the left and right rear locking pieces 36 of the individual upper rails 30 are asymmetrical, so that the rear end locking portion 53 of the lock spring 50 is reliably moved on the rear locking piece 36L (V-shaped groove 36a) side. While being regulated, the precision error of the component can be absorbed by the clearance on the rear locking piece 36R (U-shaped groove 36b) side. As a result, the assembling workability of the lock spring 50 is improved while suppressing the rattling of the lock spring 50 in the upper rail 30.

  However, since a large clearance is provided on the side of the rear locking piece 36R having the U-shaped groove 36b, the rear end locking portion 53 of the lock spring 50 is behind the reference side engaged with the rear locking piece 36L. There is a possibility that an inclination that lowers the escape side engaged with the locking piece 36R is generated. In particular, when the lock spring 50 is pressed downward with a force biased toward the escape side, such an inclination is likely to occur. FIGS. 14 to 22 show an embodiment in which the lock spring 50 is prevented from being pressed by such a biased force toward the escape side. FIGS. A comparative example is not shown.

  As shown in FIGS. 14 to 18, the lock release lever 40 of the present embodiment further extends from the spring pressing piece 44 </ b> R positioned on the escape side of the pair of left and right spring pressing pieces 44 </ b> L and 44 </ b> R (side wall 31 b of the upper rail 30). And a projection (position setting means) 46 that protrudes in the direction of approaching. The protrusion 46 is formed in a partial range in the longitudinal direction of the lock release lever 40 in the vicinity of the end portion (rear end portion in the front-rear direction) of the spring pressing piece 44R. In the unlocking lever 40, a pair of left and right spring pressing pieces 44L, 44R excluding the protrusion 46 is disposed at a center C1 in the width direction at substantially equal intervals from the pair of side walls 41 (as indicated by a dashed line in FIGS. 15 to 18). However, the provision of the protrusion 46 makes the reference side and the relief side asymmetrical at the rear end. That is, in the lock release lever 40, the distance from the center C1 in the width direction to the side surface of the protrusion 46 on the escape side is larger than the distance from the center C1 in the width direction to the side surface of the spring pressing piece 44L on the reference side. Yes. The width W1 (FIG. 15) from the side surface of the reference-side spring pressing piece 44L to the side surface of the relief-side projection 46 at the rear end of the unlocking lever 40 is a pair of left and right side walls 31a and 31b of the base 31 of the upper rail 30. The rear end of the lock release lever 40 is inserted between the pair of side walls 31a and 31b with a predetermined clearance in the left-right direction.

  FIG. 16 shows a state in which the left and right clearances of the rear end portion of the unlocking lever 40 with respect to the pair of left and right side walls 31a and 31b of the upper rail 30 are substantially equal. That is, the distance from the side surface of the reference-side spring pressing piece 44L to the reference-side side wall 31a is substantially equal to the distance from the side surface of the relief-side projection 46 to the relief-side side wall 31b. At this time, the center C1 in the width direction of the unlocking lever 40 is on the reference side with respect to the center C2 in the width direction of the upper rail 30 (the center in the width direction at substantially equal intervals from the pair of left and right side walls 31a and 31b). It is offset. Accordingly, the overlapping area of the spring pressing pieces 44L, 44R and the lock spring 50 is different on the reference side and the relief side, and the width of the upper rail 20 is larger in the reference side spring pressing part 44L than in the escape side spring pressing part 44R. It overlaps with the lock spring 50 outside in the direction (position away from the center C2 in the width direction). The overlapping regions M1, M2 of the left and right spring pressing pieces 44L, 44R and the lock spring 50 at this time are shown hatched in FIG. As can be seen from FIG. 16, the overlapping region M1 on the reference side is in a portion near the side wall 31a of the upper rail 30 in the locking piece 51a of the locking portion 51F, and the overlapping region M2 on the releasing side is separated from the side wall 31b. The position is shifted to the center C2 side in the width direction (near the boundary between the lock piece 51a and the connecting portion 51c). As shown in FIG. 5 and the like, the metal wire constituting the lock spring 50 has a circular or elliptical cross-sectional shape. Therefore, in the actual unlocking operation, the spring pressing pieces 44L, 44R The entire overlapping regions M1 and M2 are not in surface contact, but are contacted in a linear region along the extending direction of the metal wire constituting the lock spring 50.

  FIG. 19 shows a case where the unlocking operation is performed based on the positional relationship among the upper rail 30, the unlocking lever 40, and the lock spring 50 in FIG. The left and right lock portions 51F of the lock spring 50 indicated by a solid line in FIG. 19 are in a state when the lock release lever 40 is in the lock position. When the lock release lever 40 is rotated to the unlock position, the left and right spring pressing pieces 44L and 44R press the lock portions 51F, and the lock portions 51F move to the positions indicated by the phantom lines (one-dot chain lines) to lock grooves. It will be in the unlocked state where it is released from 28. Since the overlapping region M1 (see FIG. 16) close to the center in the width direction of the lock portion 51F (close to the outside of the upper rail 30) is pressed by the spring pressing piece 44L with respect to the reference side lock portion 51F, the lock portion The overlapping region M2 (see FIG. 16) near the end in the width direction of 51F (close to the center C2 of the upper rail 30) is more efficiently unlocked than the lock 51F on the escape side pressed by the spring pressing piece 44R. The (downward) force is transmitted. As a result, the rear end locking portion 53 of the lock spring 50 presses the insertion portion into the V-shaped groove 36a located on the reference side downward (that is, the direction in which the V-shaped groove 36a becomes narrow) and presses the front and rear support surfaces 36c. On the other hand, a predetermined clearance as shown in FIG. 22 is secured between the rear end locking portion 53 and the bottom of the U-shaped groove 36b, and the rear end locking portion 53 is further on the bottom side of the U-shaped groove 36b. Never go on. Therefore, the lock spring 50 moves in the unlocking direction without causing a large inclination, while the left and right lock portions 51F are maintained substantially horizontal (FIG. 19).

  FIG. 17 shows a state in which the clearance of the rear end portion of the lock release lever 40 with respect to the pair of left and right side walls 31a and 31b of the upper rail 30 is reduced on the reference side and increased on the escape side. That is, the distance between the side surface of the reference-side spring pressing piece 44L and the side wall 31a is smaller than that in the state of FIG. 16, and the distance between the side surface of the relief-side projection 46 and the side wall 31b is larger. At this time, the center C1 in the width direction of the unlocking lever 40 has an offset amount to the reference side with respect to the center C2 in the width direction of the upper rail 30 larger than the state of FIG. 16, and accordingly, the spring pressing piece 44L 44R and the lock spring 50 overlap regions M1 and M2 have changed positions. Specifically, the overlapping region M1 on the reference side is shifted in the direction away from the connection portion 51c in the lock portion 51F and approaches the center of the lock piece 51a (close to the side wall 31a), and the overlapping region M2 on the escape side is the lock portion. In 51F, it has shifted | deviated to the direction approaching the connection part 51c. Therefore, when the unlocking operation is performed and the spring pressing pieces 44L and 44R press the lock spring 50, the force is transmitted more efficiently in the overlapping region M1 on the reference side than in the state of FIG. However, since the contact between the spring pressing piece 44R and the lock spring 50 is maintained even in the overlapping area M2 on the escape side, the amount of pressing by the spring pressing piece 44R is insufficient with respect to the locking part 51F on the escape side, resulting in poor unlocking. There is nothing. Therefore, as in the case of unlocking in the positional relationship of FIG. 16 described above, the left and right lock portions 51F are maintained substantially horizontal as shown by the phantom lines (dashed lines) in FIG. Can be made.

  FIG. 18 shows a state where the clearance of the rear end portion of the unlocking lever 40 with respect to the pair of left and right side walls 31a and 31b of the upper rail 30 is increased on the reference side and decreased on the release side, contrary to FIG. Yes. That is, the distance between the side surface of the reference-side spring pressing piece 44L and the side wall 31a is larger than that in the state of FIG. 16, and the distance between the side surface of the relief-side projection 46 and the side wall 31b is smaller. At this time, the offset amount of the center C1 in the width direction of the unlocking lever 40 with respect to the center C2 in the width direction of the upper rail 30 is smaller than the state of FIG. 16, and accordingly, the spring pressing pieces 44L and 44R and the lock springs The positions of 50 overlapping areas M1 and M2 have changed. Specifically, the overlapping region M1 on the reference side approaches the connecting portion 51c side (away from the side wall 31a) of the locking portion 51F, and the overlapping region M2 on the releasing side moves away from the connecting portion 51c in the locking portion 51F ( The direction is closer to the side wall 31b.

  20 and 21 show a case where the unlocking operation is performed with the rear end portion of the unlocking lever 40 being biased toward the escape side as shown in FIG. FIG. 20 shows a state in which the rear end portion of the unlocking lever 40 is biased halfway toward the escape side, and FIG. 21 shows a state in which the rear end portion of the unlocking lever 40 is biased to the maximum in the relief side (the projection 46 is This shows a state in which the movement to the escape side is restricted by coming into contact with the side wall 31b on the escape side. 20 and FIG. 21 are closer to the center of the locking portion 51F on the escape side (in the width direction of the upper rail 30) than the state of FIG. Since the overlap region M2 on the escape side is located on the outer side and the overlap region M1 on the reference side is located near the end of the reference side lock portion 51F (near the center in the width direction of the upper rail 30), the lock release lever When the 40 is rotated to the unlock position, the balance of the pressure applied to the left and right lock portions 51F by the left and right spring pressing pieces 44L and 44R becomes close to equal. Therefore, in the rear end locking portion 53 of the lock spring 50, the escape side portion located in the U-shaped groove 36b moves slightly downward in the U-shaped groove 36b as compared with the state of FIG. That is, the rear end locking portion 53 is in an inclined state in which the escape side is slightly lowered below the substantially horizontal state shown in FIG. As a result, as shown in FIGS. 20 and 21, the lock spring 50 is inclined so that the escape-side lock portion 51F is positioned below the reference-side lock portion 51F. The amount of inclination of the lock spring 50 is larger in FIG. 21 where the rear end of the lock release lever 40 is maximally biased toward the escape side. However, as can be seen from FIG. 18, even when the rear end of the lock release lever 40 is biased toward the escape side, the overlap region M1 on the reference side and the overlap region M2 on the release side are substantially symmetrical with respect to the center C2 in the width direction of the upper rail 30. Since the positional relationship is such that the overlapping region M2 efficiently presses the lock portion 51F rather than the overlapping region M1, there is no possibility that the lock spring 50 is excessively inclined. For example, even in the tilted state of the lock spring 50 shown in FIG. 21, the lock portion 51F does not reach the position where it interferes with the cut-and-raised portion 29c in the lower rail 21, so that there is no possibility that the lock release operation will be hindered.

  As can be seen from FIGS. 16 to 18, the protrusion 46 of the unlock lever 40 is not affected by the lateral bias of the unlock lever 40 and does not always overlap the lock spring 50 (front and back different from the lock piece 50a). Therefore, when the lock release lever 40 is rotated to the unlock position, there is no possibility that the pressing force acts on the locking portion 51F on the escape side from the protrusion 46. Further, in a state where the bias of the unlocking lever 40 toward the release side is maximized, the protrusion 46 provided at the end portion in the longitudinal direction of the unlocking lever 40 abuts on the side wall 31b of the upper rail 30, so that the upper rail 30 An effect of stabilizing the position of the lock release lever 40 in the width direction with high accuracy is also obtained.

  The lock release lever 40 ′ of the comparative example shown in FIGS. 23 and 24 does not have a portion corresponding to the protrusion 46 of the embodiment described above, and includes left and right spring pressing pieces 44L ′ and 44R ′. The difference is that the rear end portion of the unlocking lever 40 ′ is symmetrical with respect to the center C1 ′ (FIG. 23) in the width direction. Other configurations are common to the above-described embodiment.

  The rear end portion of the lock release lever 40 ′ of the comparative example is inserted between the pair of side walls 31 a and 31 b of the upper rail 30 with a clearance in the left-right direction. FIG. 23 shows a state in which the rear end portion of the lock release lever 40 ′ is biased toward the escape side wall 31 b within the clearance. As a result of the bias of the unlocking lever 40 ′, the overlapping region M1 ′ of the lock portion 51F ′ of the lock spring 50 ′ and the spring pressing piece 44L ′ on the reference side is located near the boundary between the lock piece 51a and the connection portion 51c. On the other hand, the overlap region M2 ′ of the lock portion 51F ′ of the lock spring 50 ′ and the spring pressing piece 44R ′ on the escape side is closer to the center of the lock piece 51a than the overlap region M1 ′ (outward in the width direction of the upper rail 30). ). That is, the escape side spring pressing piece 44R 'has a positional relationship for efficiently pressing the lock portion 51F' rather than the reference side spring pressing piece 44L '. Therefore, when the unlocking operation is performed in this state, the spring pressing piece 44R ′ on the escape side strongly presses the lock spring 50 ′ downward, and a U-shaped groove is formed in the rear end locking portion 53 ′ (FIG. 25) of the lock spring 50 ′. The relief side portion located in 36b receives a strong pressing force, and the relief side portion is lowered as shown in FIGS. 24 and 25 by the clearance of the rear end locking portion 53 ′ with respect to the U-shaped groove 36b. A large inclination occurs in the lock spring 50 '. FIG. 24 shows the result of performing the unlocking operation in a state where the rear end portion of the lock release lever 40 ′ is maximally biased toward the escape side (until the spring pressing piece 44R ′ on the escape side contacts the side wall 31b). The position of the lock portion 51F ′ when the lock spring 50 ′ is tilted to the maximum tilt position where the locking portion 53 ′ contacts the bottom of the U-shaped groove 36b (FIG. 25) is indicated by a virtual line (dashed line). . As can be seen from FIG. 24, at the maximum inclination position of the lock spring 50 ′, the locking portion 51 F ′ on the escape side at the lower position is formed by the cut-and-raised portion 29 c in the lower rail 21 and the main body portion of the lower rail 21 (the bottom wall 22 and the outer wall portion 23. In the vicinity of the boundary of the rail unit 20, which may cause a failure in unlocking or hinder the smooth operation of the rail unit 20. Further, when the lock spring 50 ′ is tilted in the direction of lowering the relief side, the reference side becomes relatively high, so that the lock portion 51 F ′ on the side that is increased by the tilt releases the engagement with the lock groove 28 during the unlocking operation. Inconveniences such as a delay in timing and an increase in the amount of operation for unlocking may also occur.

  On the other hand, in the above-described embodiment to which the present invention is applied, the protrusion 46 provided on the lock release lever 40 restricts the proximity of the spring pressing piece 44R to the side wall 31b of the upper rail 30, and the lock release lever 40 is moved to the upper rail 30. Even if it is in any position in the movable range in the left-right direction corresponding to the clearance with respect to the base 31 of the base 31, at least the efficiency of the reference-side spring pressing piece 44 </ b> L does not fall below the escape-side spring pressing piece 44 </ b> R (pressing downward) Since the lock spring 50 is pressed by pressure), the rear end locking portion 53 of the lock spring 50 can be reliably pressed against the V-shaped groove 36a on the reference side, and the lock spring 50 ′ of the comparative example can be pressed. Such an excessive inclination to the escape side can be prevented. This effect can be obtained with a simple and inexpensive configuration in which the protrusion 46 is formed on the spring pressing piece 44R on one side of the lock release lever 40.

  As shown in FIG. 9, when the lock release lever 40 having the protrusion 46 is used in common specifications for both the left and right rail units 20, the above-described tilt prevention effect of the lock spring 50 can be obtained in any rail unit 20. It is preferable because the cost can be reduced by sharing parts. However, in the case where the inclination of the lock spring 50 is particularly likely to occur on one side of the left and right rail units 20, it is possible to use the lock release lever 40 provided with the protrusion 46 only on the one rail unit 20.

  The present invention is not limited to the illustrated embodiment described above, and can be implemented with various modifications. For example, in the illustrated embodiment, the position of the pair of spring pressing pieces 44L and 44R is set in the left-right direction by providing the protrusion 46 on the unlocking lever 40. However, the protrusion corresponding to the protrusion 46 is not protruded. It can also be formed on the side wall 31b of the upper rail 30 facing the portion 46. In this modified example, the position setting projection formed in the upper rail 30 is another component in the slide rail device 10 that is positioned in the upper rail 30 (for example, in the case of a seat having a power slide device, a slide drive). It is assumed that there is no interference with the mechanism.

  In the illustrated embodiment, the projection 46 is formed by projecting a partial range in the front-rear direction of the spring pressing piece 44R. However, the projection is increased by increasing the lateral projection amount in the entire area of the spring pressing piece 44R. It is also possible to form a portion corresponding to the portion 46. However, in this case, if the protruding portion to the side has a shape that can press the locking piece 50a of the locking portion 51F (the shape that is flush with the spring pressing piece 44R) like the spring pressing piece 44R, the relief side In this case, the overlapping region M2 with respect to the lock piece 50a is enlarged toward the outside of the upper rail 30, and there is a possibility that a pressing force that induces the inclination of the lock spring 50 may act as in the comparative example. Therefore, of the portion extending outward from the spring pressing piece 44R, the region overlapping the lock piece 50a in plan view as shown in FIG. 16 has a shape that does not transmit the pressing force to the lock piece 50a (for example, the spring pressing piece 44R). It is preferable to have a shape bent obliquely upward with respect to the plate surface.

  In the illustrated embodiment, the rear end locking portion 53 of the lock spring 50 is supported by the V-shaped groove 36a and the U-shaped groove 36b. However, the reference support portion that restricts the forward / backward movement and tilt of the lock spring 50 is not a V-shaped groove. It is good also as a form, and it is good also as forms other than a U-shaped groove for the relief support part which supports the lock spring 50 with a clearance larger than a reference | standard support part. Further, the support of the lock spring 50 in the upper rail 30 can be performed by a configuration other than the cut-and-raised portion such as the rear locking piece 36 and the front locking piece 37.

  Further, the slide lock mechanism of the illustrated embodiment is a type in which the lock spring 50 having the lock portions 51F and 51G maintains the locked state by its urging force, but the lock member having the lock portion and the lock member in the lock direction The present invention can also be applied to a slide lock mechanism of a type in which the urging means for urging is separately provided.

  Further, in the illustrated embodiment, the rectangular tubular rear end connecting portions 62 and 63 of the loop handle 60 are engaged with the downward U-shaped front end portions of the lock release lever 40, and the lock release lever 40 is moved from the loop handle 60. However, it is also possible to transmit the unlocking operation force to the unlocking lever 40 with other configurations.

DESCRIPTION OF SYMBOLS 10 Slide rail apparatus 20 Rail unit 21 Lower rail 27 Locking tooth 28 Locking groove 30 Upper rail 31 Base part 31a Side wall (side wall on the reference support part side)
31b Side wall (side wall on the relief support side)
32 Rising wall 33 Locked wall 34a 34b Front / rear movement restriction groove 36 (36L 36R) Rear locking piece (supporting portion)
36a V-shaped groove (reference support)
36b U-shaped groove (relief support part)
36c Support surface 36d Flank 37 Front locking piece 40 Unlock lever 41 Side wall 42 Upper wall 43 Rotating contact convex portion 44L Spring pressing piece (first pressing portion)
44L Spring pressing piece (second pressing part)
45 Spring hook groove 46 Protrusion (position setting means)
47 Inner Force 50 Lock Spring (Lock Member)
51F Locking part 51G Locking part 52 Front end locking piece 53 Rear end locking part (supported part)
55 Retainer 56 Bearing ball 60 Loop handle 61 Operation part 62 63 Rear end connection part C1 Center in the width direction of the unlocking lever C2 Center in the width direction of the upper rail M1 Area where the spring pressing piece of the unlocking lever on the reference side and the locking spring overlap M2 Overlap area S of the spring pressing piece of the lock release lever and the lock spring on the side S1 The width direction center W1 of the slide rail device The width W2 of the rear end portion of the lock release lever

Claims (5)

A lower rail that extends in the front-rear direction and includes a plurality of lock grooves formed side by side in the front-rear direction and is immovable relative to the vehicle floor surface;
An upper rail having a pair of side walls that are supported by the lower rail so as to be slidable in the front-rear direction and spaced apart in the width direction; and a slide that is in a locked state that restricts sliding of the upper rail with respect to the lower rail and that is in an unlocked state that allows sliding Locking mechanism;
In a vehicle slide rail device comprising:
The slide lock mechanism is
A pair of support portions provided at different positions in the width direction on the pair of side walls of the upper rail;
A lock portion that engages and disengages with the lock groove; and a supported portion that engages with the pair of support portions. The lock portion is vertically displaced with the supported portion as a fulcrum to engage with the lock groove. A lock member biased in a direction to disengage and engage the lock portion with the lock groove; and supported by the upper rail, allowing the lock portion of the lock member to engage with the lock groove. A lock release lever that is rotatable between a lock position and an unlock position that presses the lock member in a direction in which the lock portion escapes from the lock groove;
With
One of the pair of support parts is a reference support part that determines the front-rear position and the vertical position of the supported part with respect to the upper rail by contacting the supported part, and the other of the pair of support parts It is a relief support part with which the supported part is engaged;
The lock release lever is inserted between the pair of side walls of the upper rail, and a first pressing portion positioned on the reference support portion side in the width direction of the upper rail and a second position positioned on the escape support portion side And pressing the locking member with the first pressing portion and the second pressing portion when rotating to the unlock position; and the second pressing portion is the relief support. A position setting means for determining a position in the width direction of the unlocking lever with respect to the upper rail so as to restrict proximity to the side wall on the part side;
A vehicle slide rail device characterized by the above. The slide rail device for a vehicle according to claim 1, wherein the position setting means is closer to the reference support portion side of the upper rail than the distance of the second pressing portion to the side wall of the escape support portion side of the upper rail. A vehicle slide rail device that reduces a distance between the first pressing portion and the side wall. 3. The vehicle slide rail device according to claim 1, wherein the position setting means includes a protrusion that protrudes from the second pressing portion toward the side wall on the escape support portion side of the upper rail. Rail device. 4. The vehicle slide rail device according to claim 3, wherein the first pressing portion and the second pressing portion are formed at one end of the lock release lever in the front-rear direction, and the protrusion is The slide rail device for vehicles formed in the end part in the above-mentioned direction of the 2nd press part. The vehicle slide rail device according to claim 3 or 4,
The lock member is a lock spring that urges the lock portion in a direction to engage with the lock groove by its urging force, and the lock portion extends in a substantially symmetrical manner toward the width direction of the upper rail. Each of the lock pieces penetrates the lock groove and is inserted into the space between the pair of side walls of the upper rail in the locked state,
The first pressing portion and the second pressing portion of the unlocking lever press the portion inserted into the space between the pair of side walls of the pair of lock pieces,
The said slide part is a vehicle slide rail apparatus provided in the front-back direction position which does not overlap with the said lock piece.

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