JP2014097706A - Seat slide lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide lock device capable of inhibiting rattles of upper and lower rails in a locked state without reference to manufacturing tolerances of a plurality of lock pieces.SOLUTION: Lock pieces comprise five first lock pieces 4. Each of the first lock pieces 4 comprises a lock piece body part 46a, and protruding pieces 46b that are provided in the state of protruding in a width direction from both side surfaces of the lock piece body part 46a, respectively. A holding insertion hole 8 comprises a body insertion hole 81 through which the lock piece body part 46a is inserted, and a plurality of protruding piece insertion holes 82 through which the protruding pieces 46b are inserted.

Description

  The present invention relates to a seat slide lock device.

  Conventionally, a plurality of opening locking portions provided along the longitudinal direction on either one of a long lower rail fixed to a vehicle body and a long upper rail fixed to a seat, On the other hand, there is known a seat slide lock device provided with a lock piece that is passed through the holding insertion hole and is held so as to be able to enter and leave the opening engaging portion. An example of the seat slide lock device is disclosed in Patent Document 1.

  In the device disclosed in Patent Document 1, as shown in FIG. 21, five lock pieces 111 having the same width W5 and thickness t5 are held by a holding member 110 attached to the upper rail. In this state, the five lock pieces 111 are inserted through the holding insertion holes 110a provided in the holding member 110 so as to be movable in the vertical direction. When the upper rail moves with respect to the lower rail, the lock piece 111 enters and locks into a lock hole as an opening engaging portion provided in the lower rail by the biasing force of the spring, thereby making it impossible to move the upper rail with respect to the lower rail. It is intended to lock on.

  In such a seat slide lock device, the holding insertion hole 110a as described above is often formed in a quadrangular shape with a size that allows the five lock pieces 111 to enter simultaneously as shown in FIG.

JP 2010-100189 A

  However, the total thickness t6 of the five lock pieces 111 combined may have a variation due to the manufacturing tolerances of the lock pieces 111 because the thickness t5 of each lock piece 111 has a manufacturing tolerance. Therefore, there is a possibility that a large difference is generated between the length L5 of the holding insertion hole 110a and the total thickness t6. For example, the total thickness t6 is smaller than the length L5 of the holding insertion hole 110a. As a result, a considerable gap 120 may be generated between them. When the gap 120 is large as described above, there is a problem that the lock piece 111 rattles against the upper rail in the locked state where the lock piece 111 enters the lock hole.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a seat slide lock device that can suppress rattling between an upper rail and a lower rail in a locked state regardless of manufacturing tolerances of a plurality of lock pieces.

  In order to solve the above problems, the seat slide lock device of the present invention is provided along the longitudinal direction on one of a long lower rail fixed to the vehicle body and a long upper rail fixed to the seat. And a plurality of opening locking portions formed and inserted through the holding insertion holes of the holding member attached to the other in a state where the thickness direction is arranged in a line along the other longitudinal direction. In this way, the seat slide locking device includes a plurality of lock pieces arranged to be able to enter and leave the opening engaging portion, wherein the plurality of lock pieces include a first lock piece, The first lock piece protrudes in the width direction from at least one side surface in the width direction of the lock piece main body portion so as to be thinner than the lock piece main body portion and the thickness of the lock piece main body portion. And for holding the Hole is characterized in that the locking piece body portion that includes a single body insertion hole is inserted, and at least one protrusion insertion hole in which the projecting piece is inserted.

  According to this configuration, the gap generated due to the difference between the length of the protruding piece insertion hole of the holding insertion hole and the thickness of the first locking piece protrusion is equal to the length of the protruding piece insertion hole and the protrusion of one first locking piece. Since it depends on the approximate manufacturing tolerance of the thickness of the piece, the gap can be kept small. Therefore, when a force is applied from the seat in the locked state, the protruding piece of the first locking piece can be immediately brought into contact with the inner wall surface of the protruding piece insertion hole of the holding insertion hole, and the upper rail and the lower rail can be received. It is possible to suppress rattling.

  In the above-described seat slide lock device, the protruding pieces are formed on both side surfaces in the width direction of the lock piece main body, and the protruding piece insertion holes face each other on the inner peripheral wall that defines the main body insertion hole. Each of the wall surfaces is formed so as to be recessed from the wall surface.

  According to this configuration, the gap caused by the difference between the length of the protruding piece insertion hole of the holding insertion hole and the thickness of the protruding piece of the first lock piece can be more reliably suppressed. The rattling with the lower rail can be more reliably suppressed.

  In the above-described seat slide locking device, a plurality of the projecting piece insertion holes are formed on each of the opposing wall surfaces, and the opposing wall surfaces are respectively between two adjacent projecting piece insertion holes. A partition wall for partitioning the two, wherein the partition wall has a gap between the lock piece main body portions of the adjacent first lock pieces in a state where the protruding piece of the first lock piece is in contact with the partition wall. It is formed so that it can be made, and when it receives a predetermined load from the abutting projecting piece, it is elastically deformed so that the adjacent lock piece main body parts abut against each other.

  According to this configuration, when a large load is applied to the first lock piece, the partition wall can be elastically deformed so that adjacent lock piece main body portions can come into contact with each other. Can receive the load. As a result, the seat slide lock device can be prevented from being damaged.

  On the other hand, after the load applied to the first lock piece is removed, the partition wall is restored and a gap is formed between the lock piece main body portions of the adjacent first lock pieces, resulting in a manufacturing tolerance of a plurality of lock pieces. Regardless of this, rattling between the upper rail and the lower rail in the locked state can be suppressed.

  In the above-described seat slide lock device, the plurality of lock pieces are all constituted by the first lock piece.

  According to this configuration, it is possible to manufacture using one type of lock piece, a simple configuration, and easy manufacturing.

  According to the present invention, it is possible to provide a seat slide lock device capable of suppressing rattling between the upper rail and the lower rail in the locked state regardless of the manufacturing tolerance of the plurality of lock pieces.

It is a top view of one embodiment of a seat slide lock device of the present invention. FIG. 2 is a side view of the seat slide lock device of FIG. 1. It is a side view of the left slide part of the state which omitted the operation member of the seat slide lock device. FIG. 4 is a bottom view of FIG. 3. FIG. 4 is an enlarged rear view of FIG. 3. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 4. It is a principal part expanded sectional view of the state which attached the lock member to the upper rail. It is a disassembled perspective view of a locking member. It is IX-IX sectional drawing of FIG. It is the XX sectional view taken on the line of FIG. It is a principal part expanded sectional view of the state in which the protrusion of the 1st lock piece contacted the inner wall surface of the protrusion insertion hole. It is a principal part expanded sectional view of the state where the partition wall elastically deformed. It is a principal part expanded sectional view of other embodiment of a partition wall. It is sectional explanatory drawing which made the upper rail and the lower rail the unlocked state. It is a section explanatory view of other embodiments of a lock piece penetration hole and the 1st penetration part. It is a section explanatory view of other embodiments of a holding penetration hole and the 2nd penetration part. It is a section explanatory view of other embodiments of a holding penetration hole and the 2nd penetration part. It is a cross-sectional explanatory view of another embodiment of the holding insertion hole and the second insertion part. It is sectional explanatory drawing of other another embodiment of the insertion hole for holding | maintenance and a 2nd insertion part. It is a bottom view of the lower rail which has a lock hole of other embodiments. It is explanatory drawing of a prior art example.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. 1 is a plan view of an embodiment of the seat slide lock device of the present invention, FIG. 2 is a side view of the seat slide lock device of FIG. 1, and FIG. 3 is a state in which an operation member of the seat slide lock device is omitted. 4 is a side view of the left slide portion, FIG. 4 is a bottom view of FIG. 3, and FIG. 5 is an enlarged rear view of FIG. In the following description, the X direction in FIG. 1 is the front side and the Y direction is the rear side.

  The seat slide lock device of the present invention is for locking and unlocking (unlocking) the sliding of the upper rail 2 relative to the lower rail 1 as appropriate. In this embodiment, the seat slide locking device is for a vehicle as a vehicle. Yes.

  As shown in FIGS. 1 to 5, the seat slide locking device of this embodiment includes a left slide portion 10 a disposed on the lower left side of a vehicle seat, for example, a driver seat, and a right side of the driver seat. And a right slide portion 10b disposed on the lower side.

  The left slide part 10a and the right slide part 10b are arranged so as to be symmetrical. Hereinafter, the left slide part 10a will be described, and the description of the right slide part 10b will be omitted.

  As shown in FIGS. 3 to 5, the left slide portion 10 a includes a lower rail 1, an upper rail 2, a lock member 3, and a lock release operation member 7.

  The lower rail 1 is composed of a long one, and is fixed to the floor of the automobile so that its longitudinal direction is along the longitudinal direction of the automobile. As shown in FIG. 5, the lower rail 1 includes a left side wall 11 as a first wall and a right side wall 12 as a second wall that are opposed to each other with a distance in the left-right direction, and lower end sides of both side walls ( And a bottom wall 13 as a third wall connected to the base end side).

  In this embodiment, the left side wall 11 and the right side wall 12 are bent upward from the left end edge and the right end edge of the bottom wall 13, respectively. Each of the left side wall 11 and the right side wall 12 includes a folded piece 10 that is folded inward from the upper end.

  Further, as shown in FIG. 4, the bottom wall 13 is provided with lock holes 14 and 15 as a plurality of rectangular opening engaging portions for allowing the first lock piece 4 of the lock member 3 to be described later to enter. Moreover, the lock hole of this embodiment is comprised from two types from which the front-back length differs with the some short lock hole 14 and the some long lock hole 15. FIG.

  In this embodiment, the short lock hole 14 and the long lock hole 15 are composed of holes that are formed so as to penetrate from the upper surface to the lower surface of the bottom wall 13.

  The front and rear lengths and the left and right widths of each short lock hole 14 are substantially the same as the front and rear lengths (thickness) and the left and right widths of a lock claw portion 41 of the first lock piece 4 to be described later. Can enter and exit each short lock hole 14.

  The left and right widths W10 of the long lock holes 15 are substantially the same as those of the short lock holes 14, but the front and rear lengths are approximately twice the front and rear lengths of the short lock holes 14, that is, each first lock described later. The lock claw portion 41 is formed approximately twice as long as the front and rear lengths of the lock claw portion 41, and the lock claw portions 41 of the two first lock pieces 4 can enter and exit at the same time in the long lock holes 15. .

  The short lock holes 14 and the long lock holes 15 are alternately arranged in parallel along the longitudinal direction of the bottom wall 13. The distance between the short lock hole 14 and the long lock hole 15 adjacent to each other is set to be approximately the same as the front-rear length of the short lock hole 14, that is, the front-rear length of the lock claw portion 41 of the first lock piece 4. .

  The upper rail 2 is formed of a long shape having substantially the same length as the lower rail 1 and is fixedly attached to a vehicle seat (not shown) so as to be slidable along the longitudinal direction of the lower rail 1. Be placed. Then, when the upper rail 2 slides on the lower rail 1, the vehicle seat can be moved in the front-rear direction.

  As shown in FIG. 5, the upper rail 2 includes a left side wall 21 as a first wall and a right side wall 22 as a second wall, which are opposed to each other with a distance in the left-right direction, and their upper end side (base end side). And an upper wall 23 connected to each other.

  Further, in this embodiment, the left side wall 21 and the right side wall 22 are bent downward from both left and right ends of the upper wall 23, and are provided with folded pieces 26 bent outward from the lower tip side. Yes.

  Each of the left side wall 21 and the right side wall 22 includes a pair of front and rear first locking holes 25 formed with a distance in the longitudinal direction (front and rear direction). Each of the left side wall 21 and the right side wall 22 includes a second locking hole 27 on the lower side thereof.

  As shown in FIG. 6, the upper wall 23 includes a lock piece insertion hole 23a, a front rattling prevention hole 23b and a rear rattling prevention hole 23c formed on both front and rear sides of the lock piece insertion hole 23a. And.

  As shown in FIG. 9, the lock piece insertion hole 23a is formed in a rectangular shape, and a first insertion portion 48 of the first lock piece 4 described later is inserted so as to be vertically movable.

  Further, like the lower rail 1, the upper rail 2 includes at least one of the left side wall 21, the right side wall 22, and the upper wall 23 (all in this embodiment) having elasticity. Yes.

  Further, as shown in FIG. 5, an opening 24 between the walls is formed on the lower side of the upper rail 2 between the left side wall 21 and the right side wall 22. Then, when an external force is applied to the opening 24 between the walls to widen the opening width of the opening 24 between the walls, the left wall 21, the right wall 22 and the upper wall 23 are bent and the opening width is expanded, When the external force is removed, the original width is restored by elasticity.

  Next, the lock member 3 will be described. As shown in FIG. 8, the lock member 3 includes a plurality (five in this embodiment) of lock pieces 4 and a holding member that holds the lock pieces 4.

  In this embodiment, the lock piece is composed of five first lock pieces 4 having the same configuration.

  Each first lock piece 4 has a second insertion portion 46 inserted into a holding insertion hole 8 of a holding member, which will be described later, so as to be vertically movable, and a lower rail 1 locked below the second insertion portion 46 on the lower side. And a lock claw portion 41 that enters and exits the holes 14 and 15.

  As shown in FIG. 10, the second insertion portion 46 includes a quadrangular columnar lock piece main body 46 a and a protruding piece 46 b. The protruding piece 46b has a thickness t1 smaller than the thickness t2 of the lock piece main body 46a, and protrudes in the width direction from each side in the front and rear central portions of the left and right side surfaces in the width direction of the lock piece main body 46a. It is installed.

  In this embodiment, as shown in FIG. 8, the lock claw portion 41 includes a taper portion that gradually decreases in thickness on the lower side, so that the taper portion easily enters and exits the lock holes 14 and 15 of the lower rail 1. It has become. In this embodiment, the projecting piece 46 b extends to the lower end of the lock claw portion 41. Therefore, in this embodiment, the width of the lock claw portion 41 is substantially the same as the width of the second insertion portion 46. The protruding piece 46b is not limited to the form extending to the lower end of the lock claw portion 41, and may be provided only in the second insertion portion 46, and can be changed as appropriate.

  The first lock piece 4 has a first insertion portion 48 inserted into the lock piece insertion hole 23a of the upper rail 2 so as to be vertically movable, and an upper side of the first insertion portion 48. And an operated portion 42 which is operated to be lifted by an unlocking operation member described later.

  As shown in FIGS. 8 to 10, the five first lock pieces 4 configured in this way are arranged side by side in a row so that each thickness direction is along the longitudinal direction of the upper rail 2. The

  As shown in FIG. 8, the holding member includes a holding frame 5 that holds the first lock piece 4 so as to be movable up and down, and a bracket 6 that supports the holding frame 5.

  The bracket 6 includes a pair of front and rear first pieces 61 and second pieces 62 that are opposed to each other with a distance in the front-rear direction, and a connecting piece 63 that connects these lower ends (base ends). In this embodiment, the first piece 61, the second piece 62, and the connecting piece 63 are formed by bending the front and rear side portions of a single plate-like body having a predetermined thickness upward.

  Each of the first piece 61 and the second piece 62 includes a first rail locking piece 65 projecting in the left direction and the right direction at both ends in the left and right width directions.

  The front and rear lengths of the first rail locking pieces 65 are set to be approximately the same as the front and rear lengths of the first locking holes 25 of the upper rail 2. The distance between the first rail locking pieces 65 is set to be approximately the same as the distance between the first locking holes 25 of the upper rail 2, and the first rail locking pieces 65 are respectively located in the first locking holes 25. It can enter.

  Further, the first piece 61 and the second piece 62 are respectively provided with a first rattling prevention portion 64a and a second rattling at the front end side thereof to prevent the holding member from rattling against the upper rail 2. The prevention part 64b is provided. When these first and second rattling prevention parts 64a and 64b are applied with an external force in the direction of reducing or increasing the distance between them, the first piece 61, the second piece 62, and the connecting piece 63 At least one (all in this embodiment) bends (against elasticity) to reduce or increase its distance. Then, when the external force is removed, the rattling prevention portions 64a and 64b are configured to be restored by elasticity and return to the original distance.

  In this embodiment, the distance in the front-rear direction between the first anti-rattle portion 64a and the second anti-rattle portion 64b is a normal state where no external force is applied, and is used to prevent the upper rail 2 from rattling. The distance between the hole 23b and the backlash prevention hole 23c (the distance between the front inner surface on which the front anti-rattle hole 23b is partitioned and the rear inner surface on which the rear backlash prevention hole 23c is partitioned, (See FIG. 6).

  And if the external force of the direction which makes the 1st rattling prevention part 64a and the 2nd rattling prevention part 64b reduce the distance before and behind is applied, the 1st piece 61, the 2nd piece 62, the connection piece 63, Is bent against the elasticity, and the distance is reduced to enter the anti-rattle hole 23b at the front of the upper rail 2 and the anti-rattle hole 23c at the rear.

  Further, in this embodiment, the first anti-rattle portion 64a and the second anti-rattle portion 64b are formed such that the distance from each other gradually decreases toward the distal end side (upper end side). A guide portion 64c made of an inclined surface is provided. When the guide portion 64c causes the first rattling prevention portion 64a and the second rattling prevention portion 64b to enter the front rattling prevention hole 23b and the rear rattling prevention hole 23c of the upper rail 2, respectively. It is easy to get in.

  As shown in FIG. 8, the connecting piece 63 includes a holding insertion hole 8 through which the first lock piece 4 passes downward, and a second rail engagement projecting in the width direction at each of both left and right width direction ends. And a piece 67.

  As shown in FIG. 10, the holding insertion hole 8 includes one main body insertion hole 81 and a plurality of protruding piece insertion holes 82. The main body insertion hole 81 has a rectangular shape that is long in the front-rear direction in plan view, and the lock piece main body portion 46 a in the second insertion portion 46 of the five first lock pieces 4 is inserted therethrough.

  The protruding piece insertion hole 82 is inserted into the protruding piece 46b of the first locking piece 4 inserted through the lock piece main body 46a. The projecting piece insertion holes 82 are formed in parallel to each other in the front-rear direction so as to be recessed from the respective wall surfaces 81b, 81c on the opposing left and right wall surfaces 81b, 81c of the inner peripheral wall 81a that defines the main body insertion hole 81. Has been.

  Further, a partition wall 83 is formed between the protruding piece insertion holes 82 formed in this way. Then, as shown in FIG. 11, the lock piece main body portions 46 a of the two adjacent first lock pieces 4 are in contact with the partition wall 83 in a state where the protrusion pieces 46 b inserted through the protrusion piece insertion holes 82 are in contact with each other. A gap 84 is formed between them.

  In addition, as shown in FIG. 12, these partition walls 83 are elastically deformed when a predetermined load is applied to the inserted first lock piece 4 and pressed against the projecting piece 46b, and two adjacent first lock pieces are locked. The lock piece main body portions 46a of the pieces 4 are configured to contact each other.

  The partition wall 83 is not limited to a shape that is elastically deformed when a predetermined load is applied to the inserted first lock piece 4 and is pressed against the projecting piece 46b. For example, as shown in FIG. 83 may be configured such that the partition wall 83 is crushed when a predetermined load is applied to the inserted first lock piece 4 and is pressed against the protruding piece 46b, and can be changed as appropriate.

  In this embodiment, the second rail locking piece 67 of the connecting piece 63 has a longitudinal length of the second locking hole 27 at a position corresponding to the second locking hole 27 (see FIG. 5) of the upper rail 2. They are formed with substantially the same length in the front-rear direction.

  Next, the holding frame 5 of the holding member will be described. As shown in FIG. 8, the holding frame 5 includes a cylinder portion 51, and the first lock pieces 4 are arranged in the cylinder portion 51 so as to be movable up and down (see FIG. 9).

  Further, the first lock piece 4 held by the cylindrical portion 51 is constantly urged downward with respect to the holding frame 5 by a coil spring 44 as an urging member.

  Specifically, the coil spring 44 is disposed between a first spring receiving portion 45 provided on the first lock piece 4 and a second spring receiving portion 52 provided on the holding frame 5. The lower end of the coil spring 44 is in contact with the first spring receiving portion 45, the upper end of the coil spring 44 is in contact with the second spring receiving portion 52, and the first spring receiving portion 45 is caused by the biasing force of the coil spring 44. It is biased downward in the direction away from the second spring receiving portion 52.

  The holding frame 5 has a first support piece 53 provided at each of the front and rear ends so that the support pieces 53 can be inserted into the support holes 68 provided in the first piece 61 and the second piece 62 of the bracket 6. The first piece 61 and the second piece 62 are supported.

  The lock member 3 configured as described above is attached to the upper rail 2 as follows.

  With the support piece 53 of the holding frame 5 inserted and supported in the support holes 68 of the first piece 61 and the second piece 62 of the bracket 6, the first piece 61 and the second piece 62 are connected to the upper rail 2. It pushes in from the opening part 24 between walls.

  As a result, as shown in FIG. 5, the first rail locking piece 65 in each of the first piece 61 and the second piece 62 resists the elasticity of the upper rail 2 through the inter-wall opening 24 of the upper rail 2. The first piece 61 and the second piece 62 enter the upper side (back) between the left side wall 21 and the right side wall 22 of the upper rail 2.

  And the guide part 64c of the 1st rattling prevention part 64a of the 1st piece 61 contact | abuts to the front inner wall which divided the front shading prevention hole 23b of the upper rail 2, and the 2nd of the 2nd piece 62 The guide portion 64c of the rattling prevention portion 64b abuts against the rear inner wall that partitions the backlash prevention hole 23c.

  When the first piece 61 and the second piece 62 are further pushed into the upper side of the upper rail 2 from this state, the guide portions 64c slide up the front inner side wall and the rear inner side wall as shown in FIG. . As a result, the first anti-rattle portion 64a and the second anti-rattle portion 64b have a smaller distance from each other against elasticity, and the front anti-rattle hole 23b and the rear anti-rattle It enters into each of the holes 23c.

  At that time, the guide portion 64c allows the first rattling prevention portion 64a and the second rattling prevention portion 64b to easily enter the front rattling prevention hole 23b and the rear rattling prevention hole 23c, respectively. Can be operated easily.

  Further, the first piece 61 and the second piece 62 are pushed in, and the first rail locking pieces 65 of the first piece 61 and the second piece 62 are respectively connected to the left side wall 21 and the right side wall 22 of the upper rail 2. When they match the one locking hole 25, they enter them as shown in FIG. When the first rail locking piece 65 enters the first locking hole 25, the opening 24 between the walls of the upper rail 2 is restored by elasticity, and the opening width returns to the original state.

  As a result, when the first piece 61 and the second piece 62 move downward with respect to the upper rail 2, the first rail locking piece 65 is locked to the lower inner side surface defining the first locking hole 25 and the first It is prevented from coming off from the locking hole 25.

  Further, at the same time when the first rail locking piece 65 and the first locking hole 25 of the upper rail 2 match, the second rail locking piece 67 is connected to the second locking hole 27 of the upper rail 2. , And enters the second locking hole 27 when the upper rail 2 is restored.

  In this state, the first rattling prevention portion 64a of the first piece 61 presses the front inner wall defining the front rattling prevention hole 23b of the upper rail 2 to the front side by elasticity, and at the same time, the second rattling. After the anti-rattle portion 64b defines the anti-rattle hole 23c, the inner side wall is elastically pressed backward so that the lock member 3 and the upper rail 2 do not rattle each other.

  Further, when a force in the front-rear direction along the longitudinal direction with respect to the upper rail 2 is applied to the lock member 3, the inner surface before or after the first rail locking piece 65 defines the first locking hole 25. In addition to abutting on the second latching piece 67, the second rail latching piece 67 abuts on the front or rear inner surface of the second latching hole 27.

  Therefore, the lock member 3 can be made less likely to come off from the upper rail 2, and the deformation of the bracket 6 can be suppressed, and the fixed state of both can be maintained.

  Next, the unlocking operation member 7 will be described. The unlocking operation member 7 is used for unlocking the first lock piece 4. As shown in FIGS. 1 to 5, the lock release operation member 7 pulls up the first lock piece 4, and the lock piece pulling member 71. A pulling member urging spring 70 for urging the upper member 71 and an operation member 72 for moving the lock piece pulling member 71 are provided.

  As shown in FIG. 7, the lock piece pull-up member 71 is provided with a lock piece engaging portion 71a that is detachably engaged with the operated portion 42 of the first lock piece 4 on one end side, and on the other end side. A pressing operation unit 71b that is pressed by the operation member 72 is provided.

  As shown in FIG. 3, the length of the lock piece engaging portion 71 a in the front-rear direction is set longer than the length of the five first lock pieces 4 in the front-rear direction. And this lock piece latching | locking part 71a is arrange | positioned in the downward position of the to-be-operated part 42 of each 1st lock piece 4. As shown in FIG.

  Further, between the lock piece engaging portion 71a and the pressing operation portion 71b of the lock piece pulling member 71, as shown in FIGS. 3 and 5, the attachment member 20 provided on the upper rail 2 is rotatable. A shaft support portion 71c that is supported by the shaft is provided.

  The shaft support portion 71c allows the lock piece lifting member 71 to move upward when the pressing operation portion 71b is pushed downward. Further, during the upward movement, the lock piece engaging portion 71a engages with the operated portion 42 of each of the first lock pieces 4 and pulls up each of the first lock pieces 4 upward.

  One end side of the pulling member biasing spring 70 is locked to the mounting member 20, and the other end side is attached to the portion on the right side of the pressing operation portion 71 b of the shaft support portion 71 c of the lock piece lifting member 71. Accordingly, the pressing operation portion 71b is constantly urged upward by the urging force of the pulling member urging spring 70.

  In this embodiment, as shown in FIGS. 1 and 2, the operation member 72 is formed by bending a round bar into a substantially U shape, and includes a gripping portion 72 a at the front end. The left and right rear ends are each provided with a pressing portion 72b that presses the pressing operation portion 71b of the lock piece pulling member 71 of the left slide portion 10a and the right slide portion 10b.

  The gripping portion 72a is arranged below the front end side of the seat (not shown) so that the gripper 72a can be gripped while a seated person sitting on the seat is sitting. Moreover, the pressing part 72b is arrange | positioned above the press operation part 71b.

In this embodiment, the operation member 72 is swingably disposed via a shaft 73. Specifically, a shaft 73 is held on the upper rail 2. And the operation member 72 is attached to the axis | shaft 73 so that rotation is possible in the intermediate part of the holding part 72a and the press part 72b.

  Thus, when the gripper 72a is pulled upward by the seated person, the pressing portion 72b moves downward to press the pressing operation portion 71b downward. Further, the shaft 73 of this embodiment is urged by the urging spring 74 for the operation member. When the grip part 42a is pulled upward by hand and then the hand is released, the shaft 73 for the operation member is urged. The holding portion 72a is returned to the original state shown in FIG. 2 by the biasing spring 74.

  Next, the operation of the vehicle seat slide lock device of this embodiment will be described. When the gripper 72a of the operation member 72 is pulled up by the seated person, the pressing operation unit 71b of the lock pulling member 71 is pressed downward.

  Accordingly, as shown in FIG. 14, the lock piece engaging portions 71 a of the lock piece lifting member 71 are engaged with the operated portions 42 of all the first lock pieces 4, and all the first lock pieces 4 are coil springs 44. It can be pulled upward against the urging force. In this state, the lock claw portions 41 of all the first lock pieces 4 come out of the lock holes 14 and 15.

  Further, in this state, the upper rail 2 becomes slidable with respect to the lower rail 1. For example, when the seat is pressed forward or backward by a seated person, the upper rail 2 is moved forward with respect to the lower rail 1. Or, it slides to the rear side, and the seat moves to the front side or the rear side.

  Then, after the seat is adjusted by the seated person to the appropriate position on the front side or the rear side, the operation member 72 is released from the operation member 72 that has been gripped. The first locking piece 4 arranged at an arbitrary position is urged downward by the coil spring 44.

  By this urging, three of the five first lock pieces 4 appropriately enter the short lock hole 14 and the long lock hole 15 so that the upper rail 2 and the lower rail 1 are locked and become non-slidable (see FIG. 6).

  In this locked state, when a force that slides on the lower rail 1 is applied to the upper rail 2, the force is received by the first lock piece 4 that has entered the short lock hole 14 and the long lock hole 15, and the upper rail 2. Stop moving.

  At this time, a gap t3 (shown in FIG. 11) caused by the difference between the length in the front-rear direction of the protruding piece insertion hole 82 of the holding insertion hole 8 of the bracket 6 and the thickness of the protruding piece 46b of the first lock piece 4 is Since the thickness depends on the thickness of the protruding piece insertion hole 82 and the protruding piece 46b of one first lock piece 4, it is kept small.

  Therefore, when the force is applied to the upper rail 2, the protrusion 46b of the first lock piece 4 comes into contact with the inner wall surface 82a of the protrusion insertion hole 82 of the holding insertion hole 8 of the bracket 6 as shown in FIG. The upper rail 2 can be received, and the movement of the upper rail 2 can be suppressed. Therefore, rattling between the upper rail 2 and the lower rail 1 can be suppressed.

  In addition, in the said embodiment, although the lock piece penetration hole 23a of the upper rail 2 is comprised from the rectangular thing, it is not restricted to this form, It can change suitably.

  For example, as shown in FIG. 15, the first insertion portion 148 of the first lock piece 4 is connected to one end in the width direction of the first insertion portion lock piece main body portion 148a and the first insertion portion lock piece main body portion 148a. It is assumed that the first insertion portion protrusion 148b is formed. Then, the lock piece insertion hole 123 is inserted into the main insertion hole 123a through which the first insertion portion lock piece main body portion 148a of the first lock piece 4 is inserted, and the first insertion portion projection piece 148b is inserted through the first insertion portion protrusion hole 148b. You may comprise from the protrusion piece insertion hole 123b for insertion parts. By comprising in this way, the 1st lock piece 4 can be hold | maintained to the upper rail 2 so that shakiness may be suppressed.

  Moreover, in the said embodiment, although the protrusion 46b of the 1st lock piece 4 was formed so that each of the front surface and the rear surface of the lock piece main-body part 46a might be made, it is not restricted to this form, Can be changed. For example, as shown in FIG. 16, the protruding piece 146b of the first lock piece 4 is formed so as to be flush with either one of the front surface and the rear surface of the lock piece main body 146a, and to form a step with the other surface. (In FIG. 16, the lock piece main body 146a is formed so as to be flush with the rear surface, and the front surface and the stepped portion are illustrated.)

  Moreover, in the said embodiment, although the lock piece was comprised from the five 1st lock pieces 4, it is not restricted to the thing of this form, It can change suitably.

  For example, as shown in FIG. 17, you may comprise from two 1st lock pieces 4a and three 2nd lock pieces 4b. Specifically, the first lock piece 4a has the same configuration as that of the above-described embodiment, and includes a lock piece main body portion 46a and a protruding piece 46b. The 2nd lock piece 4b is comprised only with the lock piece main-body part 246 of the same structure as the lock piece main-body part 46a of the 1st lock piece 4a.

  The two first lock pieces 4a are respectively disposed on the front side and the rear side of the three second lock pieces 4b.

  Further, the holding insertion hole 108 of the bracket 6 is formed with a protruding piece insertion hole 182 at a position corresponding to the protruding piece 46b of the first lock piece 4a.

  Even in this case, the gap generated by the difference between the length in the front-rear direction of the protruding piece insertion hole 182 of the holding insertion hole 108 of the bracket 6 and the thickness of the protruding piece 46b of the first lock piece 4a is the protruding piece insertion hole 182. Since it depends on the manufacturing tolerance of the thickness of the protrusion 46b of one first lock piece 4a, it can be reduced as compared with the conventional one, and rattling between the upper rail 2 and the lower rail 1 is suppressed. be able to.

  Further, at least one first lock piece 4a can be always put in the lock holes 14 and 15 to be locked. Therefore, the play in the width direction between the first lock piece 4a and the lock holes 14 and 15 can be suppressed.

  In the case where the first lock piece 4a and the second lock piece 4b are configured, for example, as shown in FIG. 18, the first lock piece 4a and the second second lock piece 4b are configured. You may make it arrange | position alternately. Even in this case, at least one first lock piece 4a can be always put in the lock hole to be locked.

  In the embodiment described above, the number of the lock pieces is five, but the number of the lock pieces can be composed of two or more having at least one first lock piece 4a, and can be changed as appropriate.

  For example, as shown in FIG. 19, it may be composed of a total of four of two first lock pieces 4a and two second lock pieces 4b. In this case, two second lock pieces 4b are disposed between the two first lock pieces 4a so that each of the first lock pieces 4a is adjacent to the second lock piece 4b. As shown in FIG. 20, all the lock holes 140 of the lower rail 1 are formed to have the same thickness as each of the first lock pieces 4a and the second lock pieces 4b.

  Even when formed in this way, the first lock piece 4a and the second lock piece 4b can always be put into the lock hole 140 to be in a locked state, and the lock pieces 4a and 4b can be prevented from being damaged. Further, rattling in the width direction between the first lock piece 4a and the lock hole 140 can be suppressed.

  Moreover, in the said embodiment, although the protrusion was formed in each of the both sides | surfaces of the width direction of a lock piece main-body part, not only the thing of this form but a protrusion is any of the width direction of a lock piece main-body part. It may be formed on the side surface on one side, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Lower rail 2 Upper rail 4, 4a 1st lock piece 4b 2nd lock piece 8 Holding insertion hole 23a Lock piece insertion hole 41 Lock claw part 46a Lock piece main-body part 46b Projection piece 81 Main body insertion hole 82 Projection piece insertion hole

Claims (4)

A plurality of opening engaging portions provided along a longitudinal direction on one of a long lower rail fixed to the vehicle body and a long upper rail fixed to the seat, and the thickness direction in the other Are arranged so as to be able to enter and exit the opening engaging portion so as to be inserted into the holding insertion hole of the holding member attached to one of the other in a state of being arranged in a line along the longitudinal direction of the opening. A seat slide locking device comprising a plurality of locking pieces,
The plurality of lock pieces include a first lock piece,
The first lock piece protrudes in the width direction from at least one side surface in the width direction of the lock piece main body portion so as to be thinner than the lock piece main body portion and the thickness of the lock piece main body portion. With a projected piece,
The holding insertion hole includes a main body insertion hole through which the lock piece main body portion is inserted, and at least one protruding piece insertion hole through which the projection piece is inserted. apparatus. The protruding pieces are formed on both side surfaces in the width direction of the lock piece main body,
2. The seat slide lock according to claim 1, wherein the protruding piece insertion hole is formed to be recessed from the wall surface on each of mutually opposing wall surfaces of the inner peripheral wall defining the main body insertion hole. apparatus. A plurality of the projecting piece insertion holes are formed on each of the wall surfaces facing each other,
Each of the wall surfaces facing each other is provided with a partition wall for partitioning both between the two adjacent projecting piece insertion holes,
The partition wall is formed such that a gap is formed between the lock piece main body portions of the adjacent first lock pieces in a state where the protruding piece of the first lock piece is in contact with the partition wall. 3. The seat slide lock device according to claim 2, wherein the adjacent lock piece main body portions come into contact with each other by elastic deformation when a predetermined load is received from the contact pieces.   4. The seat slide lock device according to claim 1, wherein all of the plurality of lock pieces are configured by a first lock piece. 5.

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