JP5498554B2 - Slide rail device for vehicle - Google Patents

Description

  The present invention relates to a vehicle slide rail device that slidably supports a seat.

As a prior art of a slide rail device for a vehicle, a pair of left and right lower rails that are fixed to the floor of the vehicle and that have a plurality of lock grooves that extend in the front-rear direction and are arranged in the front-rear direction, and support the seat portion of the seat and the left and right lower rails A pair of left and right upper rails slidably supported on the upper rail, and a lock position that engages with the lock groove and an unlock position that releases the lock groove, housed in the inner space of the upper rail, can be rotated in the vertical direction. A lock lever supported on the upper rail, a wire spring (biasing means) that urges the lock lever to the lock position side, an operation lever whose rear part is fixed to the lock lever, and whose front part projects forward of the upper rail There is a thing equipped with.
Therefore, when the passenger does not apply operating force to the operating lever, the lock lever held in the locked position by the urging force of the wire spring engages with one of the locking grooves, so the seat and the upper rail slide relative to the lower rail. The position is maintained. On the other hand, when the passenger rotates the lock lever to the unlock position by operating the operation lever against the urging force of the wire spring, the lock lever releases the engagement with the lock groove, so that the seat and the upper rail are lower rails. It becomes possible to slide against.

Japanese Patent No. 4013591

  When the unlocking operation is performed by rotating the lock lever (control lever), the lock lever does not move (strictly) downward, but moves in the circumferential direction around the rotation center of the lock lever. Become. That is, it does not move in a direction parallel to the extending direction of the lock groove, but moves in a direction non-parallel to the extending direction. Therefore, when the unlocking operation is performed and when the lock portion that has escaped from the lock groove returns to the direction of engagement with the lock groove, the lock lever may not be smoothly engaged with or disengaged from the lock groove. Moreover, the rotation stroke of the lock lever for performing the unlocking operation has to be increased.

  According to the present invention, a lock spring having a lock portion that engages and disengages with a lock groove formed on the lower rail is moved in a direction as parallel as possible to the extension direction of the lock groove, so that the lock portion is not greatly rotated. An object of the present invention is to provide a vehicular slide rail device that can be smoothly engaged and disengaged with respect to a lock groove.

  A slide rail device for a vehicle according to the present invention includes a lower rail that extends in the front-rear direction and is immovable with respect to a vehicle floor, and a plurality of lock grooves that are formed side by side in the front-rear direction and extend in the up-down direction and open at one end. And an upper rail having a plurality of support portions supported by the lower rail so as to be slidable in the front-rear direction and spaced apart in the front-rear direction, and a portion that is supported by each of the support portions so as to be elastically deformable in the vertical direction. A lock spring provided with a lock portion that can be engaged with and disengaged from the lock groove on the elastic deformation portion, and a lock release lever that is rotatably supported by the upper rail and that has its spring pressing portion engaged with the elastic deformation portion. The lock release lever includes a lock position that allows the lock portion to engage with the lock groove by a biasing force of the elastic deformation portion. By pressing the elastically deformable portion by the spring pressing section, it is characterized in that the unlocking position to escape the locking portion from the locking groove, between rotatable.

According to the present invention, the spring pressing portion of the lock release lever that is rotatably supported by the upper rail presses the elastic deformation portion of the lock spring. However, since the elastically deforming portion of the lock spring is elastically deformed in a direction substantially parallel to the extending direction (vertical direction) of the lock groove, the lock portion can be smoothly engaged with and disengaged from the lock groove.
Furthermore, since the lock portion moves in the vertical direction, it is not necessary to rotate the lock release lever greatly during the lock / unlock operation.

It is a side view of a slide seat device when an upper rail of one embodiment of the present invention slides to a front end position. It is the perspective view seen from the front diagonally upper direction of the slide rail device. It is the disassembled perspective view which looked at the slide rail apparatus from the diagonally upper front. It is the disassembled perspective view which looked at the slide rail apparatus from the diagonally downward front which abbreviate | omits the rail on the left side. It is sectional drawing which follows the VV arrow line of FIG. It is the expansion perspective view which looked at the center part of the upper rail and lock spring in a separated state from the lower part. It is the perspective view seen from the lower part of the upper rail in an assembled state, a lock release lever, and a lock spring. FIG. 5 is a side view showing the upper rail, the lock release lever, and the loop handle in a locked state, in which only the upper rail is shown as a vertical side view. FIG. 9 is a side view similar to FIG. 8 when in an unlocked state. FIG. 5 is an enlarged perspective view of the upper rail and the lower rail in a locked state, showing the outer wall of the lower rail, the rising wall of the upper rail, and the locked wall. It is a typical side view which shows a state when a lock spring is located in a lock position and a lock release position. It is the expansion perspective view which looked at the front end part of the upper rail and the lock release lever, and the rear end part of the loop handle from below. It is the perspective view seen from the downward direction of the lock release lever. It is a disassembled perspective view which expands and shows the front-end part of a lock release lever, a biasing spring, and the rear-end part of a loop handle. It is an expansion perspective view when the front end part of a lock release lever, a biasing spring, and the rear end part of a loop handle are assembled together. It is an enlarged vertical side view showing the rear end portion of the loop handle and the front end portion of the lock release lever with the biasing spring omitted. It is a figure similar to FIG. 16 when a loop handle is pushed down. FIG. 3 is a perspective view similar to FIG. 2 when the rear end portion of the right rail unit moves upward compared to the front end portion when another vehicle collides with the vehicle on which the slide seat device is mounted. FIG. 19 is a perspective view similar to FIG. 18 when the rear end portion of the right rail unit has moved further upward than the front end portion. It is the perspective view seen from the upper direction of the lock release lever of a modification. FIG. 13 is an enlarged perspective view similar to FIG. 12. FIG. 6 is a sectional view similar to FIG. 5. It is the perspective view seen from the upper direction of the lock release lever of another modification. FIG. 10 is an enlarged bottom view of the vicinity of a connection portion between an intermediate portion and a narrow width portion of a lock release lever of still another modified example.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The direction in the following description is based on the arrow direction indicated in the figure.
A slide sheet device 10 is provided on a floor plate F (see FIG. 1) that constitutes the interior floor of an automobile (vehicle) not shown. The floor board F is provided with four screw holes F1 (two on the left and right sides respectively) for one slide seat device 10, and at the position corresponding to each screw hole F1 on the lower surface of the floor board F. A weld nut N concentric with the screw hole F1 is fixed. The floor board F is provided with a positioning hole F2 located immediately after the front screw hole F1. The slide sheet device 10 includes a slide rail device 15 constituting the lower portion thereof, and a seat 11 fixed to the upper surface of the slide rail device 15 (upper rail 35).

Next, the detailed structure of the slide rail device 15 will be described.
The slide rail device 15 includes a pair of left and right rail units 20 and a loop handle 70 that connects the front ends of the left and right rail units 20 as large components. Since the left and right rail units 20 have the same structure and the loop handle 70 has a bilaterally symmetric shape, the slide rail device 15 is bilaterally symmetric as a whole.
The left and right rail units 20 have the following structure.
The rail unit 20 has a lower rail 21 mounted on the floor board F. 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 inner wall portions 24 extending downward from the upper edge portion of the portion 23 inside. As shown in FIGS. 4, 10, etc., a large number of lock grooves 25 are formed in the front and rear direction at the lower edge portions of the left and right inner wall portions 24. Further, as shown in FIG. 4, a pair of bolt insertion holes 22a are formed in the vicinity of both front and rear ends of the bottom wall 22, and a positioning hole 22b is formed immediately after the front bolt insertion hole 22a. Spacers 27 are fixed in the vicinity of both front and rear ends of the bottom surface of the bottom wall 22, and a through hole 28 formed in the spacer 27 is concentric with the bolt insertion hole 22a.
A pair of front and rear fixing bolts (fixing members) 30 are inserted from above into the front and rear bolt insertion holes 22a of the bottom wall 22, respectively. The fixing bolt 30 includes a head portion (projecting portion) 31 constituting an upper end portion, a flange portion 32 having a diameter larger than that of the head portion 31 and the bolt insertion hole 22a connected to the lower end of the head portion 31, and a lower surface from the lower surface of the flange 32. A bolt insertion hole 22a that extends and a screw portion 33 that is slightly smaller in diameter than the through hole 28 are provided.

  The rail unit 20 has an upper rail 35 that can slide in the front-rear direction with respect to the lower rail 21. The upper rail 35 is a metal channel member that extends in the front-rear direction and has an open lower surface, and has a base portion 36 (a substantially horizontal ceiling portion 36a and a substantially horizontal ceiling portion 36a) whose cross-sectional shape is substantially U-shaped in cross section and whose inner space forms a lever storage groove 37. A pair of side wall portions 36b depending from both left and right side portions of the ceiling portion 36a), a rising wall 38 extending upward from a portion excluding the central portion in the longitudinal direction of the side wall portion 36b, and the central portion And a wall to be locked 39 extending upward. As shown in FIGS. 3, 4, 6, etc., four guide grooves 40 are formed upward in a portion straddling the lower edge portion of the left and right locked walls 39 and the lower edge portion of the side wall of the base portion 36. Further, as shown in FIG. 3 and FIG. 7 and the like, a locking piece 42 (supporting portion) extending downward after being directed downward is formed by cutting and raising in the vicinity of the center portion of the ceiling portion 36a of the base portion 36. An inward locking piece 43 (support portion) is formed by cutting and raising at a portion located slightly in front of the central portion of the side wall portion 36b.

The rail unit 20 further includes a lock release lever 47 and a lock spring 63 attached to the upper rail 35.
The lock release lever 47 is a metal plate press-molded product, which is a metal channel member extending in the front-rear direction and having an open bottom surface, and includes a base wall 47d and side walls 51 depending from both left and right edges of the base wall 47d. Are provided. The cross-sectional shape of the unlocking lever 47 is a substantially downward U-shape over its entire length, and the portion located immediately before the central portion in the longitudinal direction of the unlocking lever 47 forms an intermediate portion 48 in which the internal space constitutes the receiving recess 48a. The portion located immediately after the intermediate portion 48 is a narrow portion 49 that is narrower than before and after that portion. Furthermore, the ridge line portion 47b extending in the vertical direction formed on the outer surface of the left and right side walls 51 (the outer surface in the vicinity of the connecting portion between the intermediate portion 48 and the narrow width portion 49) is an R surface (FIGS. 3 and 4). (See FIGS. 8, 9, and 13). As shown in FIGS. 3, 4, 8, and 9, a rotation contact convex portion 50 that extends in the left-right direction protrudes from the upper surface of the lock release lever 47. Further, spring engaging grooves 52 (spring pressing portions) are respectively provided in the lower surfaces of the left and right side walls 51 of the unlock lever 47 so as to be recessed, and a lock spring engagement hole is provided in the base wall 47d of the unlock lever 47. 53 and a spring locking hole 54 are formed respectively. Further, a ridge line portion 52a having substantially the same shape as the ridge line portion 47b is formed immediately before the spring hooking groove 52 in the left and right side walls 51 (see FIGS. 8, 9, and 13). A portion of the unlocking lever 47 located in front of the intermediate portion 48 constitutes a connecting portion 55 that is wider than the intermediate portion 48, and a portion located in the rear of the connecting portion 55 constitutes a rail built-in portion 47a. ing. The lower surface of the ceiling portion at the front end portion of the connecting portion 55 is a flat front restricting portion 56, and the space immediately below the front restricting portion 56 constitutes a front allowance space 57. Further, a concave portion 58 is formed immediately after the front restricting portion 56 in the connecting portion 55, and a space formed by the concave portion 58 constitutes a rear allowance space 59. Further, from the lower left and right edge portions of the recess 58, a substantially horizontal rear restricting piece 60 (the upper surface forms the rear restricting portion 60a) extending in a direction approaching each other is provided. A space including the front allowable space 57 and the rear allowable space 59 constitutes a connection space 61.
The lock spring 63 is a substantially symmetric member obtained by bending a metal wire. A pair of front and rear lock portions 64 extending substantially horizontally toward the outside is formed in a portion located slightly rearward of the central portion in the longitudinal direction of the left and right side portions of the lock spring 63. The portion located behind the lock portion 64 extends obliquely upward and rearward from the lock portion 64 in the free state, and the portion located forward of the lock portion 64 faces obliquely upward and forward from the lock portion 64 in the free state. It extends. A pair of left and right front end locking pieces 65 project upward at the front end of the lock spring 63, and a portion located immediately after the front end locking piece 65 constitutes a lever pressing portion 66.
The rail built-in portion 47a of the unlocking lever 47 is housed in the lever housing groove 37 of the upper rail 35, and the rotation contact convex portion 50 is in contact with the ceiling surface of the base portion 36 (contact portion A in FIGS. 8 and 9). Reference: A space is formed between a portion other than the rotation contact convex portion 50 on the upper surface of the rail built-in portion 47a and the ceiling surface of the lever housing groove 37). As shown in FIGS. 7 to 9, the lock spring 63 has its rear end locked to the locking piece 42 (see the triangular mark in FIG. 8), and the portion located slightly forward of the lock 64 is locked to the left and right. Each of the locking portions 64 is engaged with the corresponding guide groove 40 from below, and the left and right front end locking pieces 65 are further engaged with the lock spring locking holes 53 from below. , And the vicinity of the front end of the left and right lever pressing portions 66 is locked to the rear edge of the lock spring locking hole 53, and the spring hooking groove 52 is formed in the portion of the lock spring 63 located between the pair of lock portions 64. Locked from above. When the lock spring 63 is attached to the upper rail 35 and the lock release lever 47 in this way, the lock spring 63 is in a state in which the forward / backward movement is substantially restricted with respect to the upper rail 35 (the lock spring 63 and the locking piece 42 are not released). The front end locking piece 65 can move only within a minute range where it does not come out of the lock spring locking hole 53, or the front and rear movements are completely restricted), and the left and right parts (front half) of the lock spring 63 are It is located in a pair of left and right spaces formed between both side walls 51 of the narrow width portion 49 and both side wall portions 36b of the upper rail 35 (see FIG. 7). Further, the lock spring 63 housed in the lever housing groove 37 is elastically deformed to generate an upward biasing force (elastic force) (see ↑ in FIG. 8), so that the unlocking lever 47 is rotated by this biasing force. The convex portion 50 is pressed against the ceiling portion 36a of the base portion 36, and the lock release lever 47 is rotated around the rotational contact convex portion 50 (a virtual rotation axis in the left-right direction) around the contact portion A between the ceiling portion 36a and the rotational contact convex portion 50. The lock release lever 47 is held in the lock position shown in FIG. 8 when the connection portion 55 can be rotated and no upward external force is applied to the connection portion 55. On the other hand, when an upward external force is applied to the connecting portion 55 against the urging force of the lock spring 63, the lock release lever 47 rotates to the unlock position shown in FIG. Then, as shown in FIG. 9, the spring hooking groove 52 of the lock release lever 47 pushes down the portion located between the pair of lock portions 64, so that each lock portion 64 escapes below the corresponding guide groove 40. (See phantom lines in FIGS. 9 and 11). As shown in FIG. 11, when the unlocking lever 47 rotates between the locked position and the unlocked position, the portions located in the guide groove 40 of each lock portion 64 (the front portion and the rear portion of the lock portion 64) are almost Move up and down.

The rail unit 20 is assembled by inserting the upper rail 35, the lock release lever 47, and the lock spring 63 integrated in this manner into the lower rail 21 from the front end opening or the rear end opening of the lower rail 21. When the rail unit 20 is assembled, as shown in FIG. 5, the rising wall 38 and the locked wall 39 of the upper rail 35 enter the space formed between the outer wall portion 23 and the inner wall portion 24, and the retainer disposed in the space. Since the plurality of bearing balls 69 rotatably supported by 68 are respectively in contact with the outer surface of the rising wall 38 and the inner surface of the outer wall portion 23, the upper rail 35 (and the lock release lever 47 and the lock spring 63) are attached to the lower rail 21. On the other hand, it can slide in the front-rear direction.
When the lock release lever 47 is located at the lock position, each lock portion 64 engages with the corresponding lock groove 25 from below as shown by the solid lines in FIG. 8, FIG. 10, and FIG. The slide with respect to the lower rail 21 is regulated. On the other hand, when the lock release lever 47 is rotated downward to the unlock position, the upper rail is released from the lock groove 25 engaged with each lock portion 64 as shown by the phantom lines in FIGS. 9 and 11. 35 can slide with respect to the lower rail 21.
The assembled left and right rail units 20 are parallel to each other and aligned with each other in the front-rear position (the sliding position of the upper rail 35 with respect to the lower rail 21 is also matched), and the seat 11 of the seat 11 is placed on the upper surface of the upper rail 35. The seat portion of the seat 11 is fixed to the left and right upper rails 35 by a plurality of bolts on which the lower surface is placed and not shown.

When the left and right rail units 20 and the seat 11 are integrated in this way, a loop handle (handle) 70 is connected to the left and right lock release levers 47 using a torsion spring (biasing means) 76.
The loop handle 70 is formed by bending a metal pipe material having a circular cross section, and has a straight portion extending in the left-right direction and a pair of inclined portions extending diagonally downward from the left and right ends of the straight portion. The grip portion 71 and a pair of rear end connection portions 72 extending rearward from the left and right end portions of the grip portion 71 are provided. A recess is formed in the lower surface of the left and right rear end connection portions 72, and the upper surface of the recess is a lower contact surface 73. A locking groove 74 extending in the left-right direction is formed on the lower surface of the rear end connection portion 72 and is positioned immediately before the lower contact surface 73.
The torsion spring 76 is a substantially symmetrical member obtained by bending a metal wire. An upward projecting piece 77 projects from the rear end portion of the torsion spring 76, and a front side locking portion 78 extending in the left-right direction is formed at the front edge portion of the torsion spring 76. Further, an upward locking projection 79 projects from the rear end of the front half of one side of the torsion spring 76, and a downward locking projection 80 projects from the front end of the rear half.
In order to connect the loop handle 70 and the torsion spring 76 to the lock release lever 47, first, the torsion springs 76 are respectively inserted into the connection spaces 61 of the left and right lock release levers 47, and the upward protruding pieces 77 are inserted into the spring locking holes 54 from below. The torsion spring 76 is prevented from moving back and forth with respect to the connecting portion 55, and the intermediate portion of one side portion (the right side torsion spring 76 is the right side portion and the left side torsion spring 76 is the left side portion) is located behind the one side. The restriction piece 60 (the right connection portion 55 is the right rear restriction piece 60 and the left connection portion 55 is the left rear restriction piece 60) is placed on the upper surface (rear restriction portion 60a) and the other side portion (right torsion spring). 76 is a left side portion, and the left side torsion spring 76 is a right side portion. The connecting portion 55 is locked to the rear edge of the left rear restricting piece 60 and the left connecting portion 55 is the right rear restricting piece 60) from the lower side, and the other side restricting protrusion 80 is locked to the other rear restricting piece 60. (See FIGS. 12, 14, and 15). Next, the left and right rear end connection portions 72 of the loop handle 70 are inserted into the left and right connection spaces 61 from the front, respectively, and the rear portion of the rear end connection portion 72 is inserted into the space between the left and right side portions of the torsion spring 76. The stop groove 74 is locked to the front locking portion 78.
When the slide seat device 10 is assembled by integrating the loop handle 70 and the torsion spring 76 with the left and right rail units 20 in this way, the front end of the torsion spring 76 (frontward of the rear regulating piece 60 is caused by the rear end connecting portion 72. Since the front portion of the rear end connecting portion 72 is brought into contact with the front restricting portion 56 by the upward biasing force (elastic force) generated by the front portion of the torsion spring 76. At the same time, the lower contact surface 73 comes into contact with the rear restricting portions 60a of the left and right rear restricting pieces 60 (see FIG. 16). After the loop handle 70 is thus connected to the left and right lock release levers 47 (connection portions 55), when the passenger grips the grip portion 71 by hand and rotates the entire loop handle 70 upward, this rotational force is applied to the rear end. Since the lock release lever 47 (connection portion 55) rotates upward together with the rear end connection portion 72 from the connection portion 72 to the front restriction portion 56 and the rear restriction portion 60a, the lock release that has been located at the lock position is performed. The lever 47 can be rotated to the unlock position. On the other hand, when the entire loop handle 70 is rotated downward, the left and right rear end connecting portions 72 rotate using the engaging portion with the front locking portion 78 as a fulcrum (the rear portion of the rear end connecting portion 72 is in the rear allowance space 59). And the front part of the rear end connection part 72 is rotated downward in the front permissible space 57) (see FIG. 17). There is no transmission from the end connecting portion 72 to the corresponding unlocking lever 47 (connecting portion 55) (the left and right unlocking levers 47 do not rotate).

  1, 3, and 4, the lower half of the positioning pin P is fitted into the positioning hole F2 of the floor board F, and then the left and right sides of the slide sheet device 10 are placed on the upper part of the positioning pin P protruding upward from the floor board F. When the positioning holes 22b of the lower rail 21 are respectively fitted, the lower surfaces of the spacers 27 fixed to the left and right lower rails 21 come into contact with the upper surface of the floor plate F, and the bolt insertion holes 22a and the through holes 28 are directly above the corresponding screw holes F1. Therefore, the slide sheet device 10 is fixed to the floor plate F by screwing the screw portions 33 into the corresponding screw holes F1 until the lower surface of the head 31 of the fixing bolt 30 is pressed against the upper surface of the bottom wall 22. The

The left and right upper rails 35 can slide rearward with respect to the lower rail 21 to the rear end position shown in FIG. 2, and can slide forward with respect to the lower rail 21 to the front end position shown in FIG. As shown in FIG. 5, when the unlocking lever 47 is located at the locked position, the head 31 and the middle 48 of the front and rear fixing bolts 30 are located at the same height (the side wall 51 of the middle 48 is However, when the upper rail 35 is located at the rear end position, the entire lock release lever 47 is located between the front and rear fixing bolts 30 (head 31). 47 does not interfere. On the other hand, even if the lock release lever 47 is returned to the lock position after the lock release lever 47 is slid to the front end position so that the front and rear positions of the intermediate portion 48 and the front head portion 31 coincide with each other, as shown in FIG. Since the head portion 31 of the front fixing bolt 30 is located in the receiving recess 48 a of the portion 48, the intermediate portion 48 does not interfere with the head portion 31. Thus, since the receiving recess 48a of the unlocking lever 47 is used to avoid interference with the head 31 of the front fixing bolt 30, the unlocking lever 47 is disposed close to the bottom wall 22 side of the lower rail 21. Therefore, the rail unit 20 can be reduced in size.
Even if the unlocking lever 47 is returned to the locked position after the upper rail 35 is slid slightly rearward from the front end position and the connecting portion 55 and the head 31 of the front fixing bolt 30 are aligned in the front-rear direction, the connecting portion Since the lower surface of 55 is located above the head 31, the head 31 and the lock release lever 47 do not interfere with each other in this case as well.
Further, since the unlocking lever 47 has a downward U-shaped cross-sectional shape having a pair of side walls 51, it is possible to increase the mechanical strength even when the metal plate which is the base material of the unlocking lever 47 is thin. is there.
In addition, the ridge lines 47b and 52a formed on the left and right side walls 51 of the lock release lever 47 are opposed to the inner side surfaces of the left and right side walls 36b of the upper rail 35 so as to be able to contact each other with a minute gap. The part of the side wall 51) prevents the unlocking lever 47 from touching the upper rail 35 from side to side.

Further, since the upper rail 35 is not provided with a rotation shaft for rotating and supporting the lock release lever 47, the rotation support structure of the lock release lever 47 with respect to the upper rail 35 has a small number of parts and a simple structure.
Further, since the connecting portion 55 of the unlocking lever 47 does not include a rotation shaft for rotating and supporting the rear end connecting portion 72 of the loop handle 70, the loop handle 70 (rear end connecting portion 72) with respect to the connecting portion 55 is also provided. The rotating support structure also has a small number of parts and a simple structure.

  Further, when another vehicle collides with the vehicle, for example, as shown in FIG. 18, the rear portion of the right lower rail 21 (the portion fixed to the floor F by the fixing bolt 30) deforms the portion of the floor board F upward. When it floats upward (when the rear end moves upward relative to the front end), the front part of the right lock release lever 47 moves (rotates) downward relative to its rear part, so this downward Is transmitted from the lock release lever 47 to the rear end connection portion 72 on the right side of the loop handle 70. Then, the left rear end connection portion 72 also moves (rotates) together with the right rear end connection portion 72, but the left rear end connection portion 72 moves relative to the left lock release lever 47 (connection portion 55). Therefore, the moving force (rotational force) of the left rear end connecting portion 72 is not transmitted to the left lock release lever 47. Therefore, the locked state of the left rail unit 20 by the left lock spring 63 is kept, so that the seat 11 (upper rail 35) does not slide unexpectedly with respect to the lower rail 21 and is safe.

As mentioned above, although this invention was demonstrated using the said embodiment, this invention can be implemented, giving various changes.
For example, you may employ | adopt the lock release lever 85 shown to FIGS. The lock release lever 85 has a substantially L-shaped cross section in which one side wall 51 of the lock release lever 47 is omitted. Also in this case, even if the lock release lever 85 is returned to the lock position after the lock release lever 85 is slid to the front end position and the intermediate portion 48 and the front head portion 31 are made to coincide with each other in the longitudinal direction, as shown in FIG. Since the head portion 31 of the front fixing bolt 30 is located in the receiving recess 48 a of the intermediate portion 48, the intermediate portion 48 does not interfere with the head portion 31. Moreover, since the lock release lever 85 has the side wall 51 on either the left or right side, it is possible to increase the mechanical strength even when the metal plate that is the base material of the lock release lever 85 is thin. .
Moreover, as shown in FIG. 23, you may employ | adopt the lock release lever 90 which abbreviate | omitted only the part except the front and rear both ends of one side wall 51. FIG.
Further, as shown in FIG. 24, on the left and right side walls 51 of the lock release lever 47 (or the side walls of the lock release levers 85 and 90), for example, a substantially semi-cylindrical rib 47c (ridge line portion) instead of the ridge line portions 47b and 52a. A rib instead of 52a may be formed). If such a rib 47c is opposed to the inner surface of the side wall portion 36b of the upper rail 35 so as to be able to contact with a small gap, the effect of the left and right touching of the lock release lever 47 (85, 90) on the upper rail 35 is further improved.
Furthermore, the fixing means for fixing the lower rail 21 to the floor board F is not limited to the fixing bolt 30, and for example, a rivet (not shown) may be used. In this case, the lower rail 21 is placed on a bracket (not shown, constituting a part of the floor board F) fixed to the floor surface F, and the bottom wall 22 and the bracket of the lower rail 21 are fixed with rivets. When the lock release levers 47, 85, and 90 are returned to the locked position after the intermediate portion 48 and the protruding portion of the rivet (the upper end protruding above the bottom wall 22) are aligned, the protruding portion Is located in the receiving recess 48a.

DESCRIPTION OF SYMBOLS 10 Slide sheet apparatus 11 Sheet | seat 15 Slide rail apparatus 20 Rail unit 21 Lower rail 22 Bottom wall 22a Bolt insertion hole 22b Positioning hole 23 Outer wall part 24 Inner wall part 25 Lock groove 27 Spacer 28 Through hole 30 Fixing bolt (fixing member)
31 head (protruding part)
32 Flange 33 Screw part 35 Upper rail 36 Base part 36a Ceiling part 36b Side wall part 37 Lever storage groove 38 Rising wall 39 Locked wall 40 Guide groove 42 43 Locking piece (support part)
47 Unlocking lever 47a Rail built-in portion 47b Edge line portion 47c Rib 47d Base wall 48 Intermediate portion 48a Receiving recess 49 Narrow width portion 50 Rotating contact convex portion (rotating contact portion)
51 Side wall 52 Spring hook groove (first engaging portion) (spring pressing portion)
52b Ridge part 53 Lock spring locking hole (second engaging part)
54 Spring locking hole 55 Connection portion 56 Front restricting portion (rotation restricting portion)
57 Allowable front space (allowable rotation space)
58 Recess 59 Back allowance space (rotation allowance space)
60 Rear restriction piece 60a Rear restriction part (rotation restriction part)
61 Connection space 63 Lock spring (biasing means)
64 Locking portion 65 Front end locking piece 66 Lever pressing portion 68 Retainer 69 Bearing ball 70 Loop handle (handle)
71 Grasping part 72 Rear end connection part 73 Lower contact surface 74 Locking groove 76 Torsion spring (biasing means)
77 Upward projecting piece 78 Front side locking part (locking part)
79 80 Locking projection 85 Unlocking lever 90 Unlocking lever A Contact part F Floor board F1 Screw hole F2 Positioning hole N Weld nut P Positioning pin

Claims (1)

A lower rail extending in the front-rear direction and immovable relative to the vehicle floor,
A plurality of locking grooves formed in the lower rail side by side in the front-rear direction and extending in the vertical direction and having one end opened;
An upper rail supported by the lower rail so as to be slidable in the front-rear direction and having a plurality of support portions spaced apart in the front-rear direction;
A lock spring provided with a lock portion that can be engaged with and disengaged from the lock groove on an elastically deformable portion formed to be elastically deformable in the vertical direction between the portions supported by the support portions,
A lock release lever that is rotatably supported by the upper rail, and has its spring pressing portion engaged with the elastic deformation portion;
With
The lock release lever is configured such that the lock portion allows the lock portion to be engaged with the lock groove by the urging force of the elastic deformation portion, and the elastic deformation portion is pressed by the spring pressing portion. A slide rail device for a vehicle, which is rotatable between an unlocking position for allowing the portion to escape from the lock groove.

Images