JP5793594B2 - 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 vehicle slide rail device, a pair of left and right lower rails that are fixed to the floor surface of the vehicle and have a plurality of protruding teeth (lock teeth) that extend in the front-rear direction and are aligned in the front-rear direction, and a seat portion of the seat, A pair of left and right upper rails slidably supported by the left and right lower rails, and a lock position that engages with the above-mentioned protruding teeth and an unlocked position that releases the engagement of the protruding teeth, which are housed in the inner space of the upper rail, vertically A lock lever supported on the upper rail so as to be rotatable, a wire spring (biasing means) that urges the lock lever to the lock position side, and a rear portion thereof is fixed to the lock lever, and a front portion thereof projects forward of the upper rail. And an operation lever.
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 any of the protruding teeth, so that the sliding position of the seat and upper rail with respect to the lower rail is maintained. Is done. 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 projecting teeth, so the seat and the upper rail become the lower rail. On the other hand, it can slide.

Japanese Patent No. 4013591

The lower rail, for example, inserts a screw portion of a fixing bolt from above into a through hole formed in the bottom portion thereof, and screws the screw portion into a screw hole formed in a vehicle floor surface on which the lower surface of the lower rail is placed, The lower surface of the head of the fixing bolt located in the lower rail can be fixed to the vehicle floor by pressing against the upper surface of the bottom of the lower rail.
However, in this fixing procedure, if the distance from the bottom of the lower rail to the lower surface of the lock lever is short, the lower surface of the lock lever and the head of the fixing bolt interfere with each other, so the lower surface of the lock lever is separated from the bottom of the lower rail to some extent. There is a need. However, when configured in this manner, the vertical dimension of the slide rail device becomes large.

  An object of the present invention is to provide a vehicle slide rail device that can reduce the vertical dimension of the slide rail device even when the lock mechanism and the lock release lever are disposed in the inner space of the upper rail. To do.

A slide rail device for a vehicle according to the present invention includes a lower rail extending in the front-rear direction, a fixing member that fixes a bottom wall of the lower rail to the vehicle floor surface side, and an upper portion of which protrudes upward from the bottom wall. An upper rail supported on the lower rail so as to be slidable in the front-rear direction; a lock mechanism provided between the upper rail and the lower rail for restricting or releasing the slide of the upper rail; and provided on the upper rail so as to be rotatable in the vertical direction. A lock release lever for releasing the slide restriction by the lock mechanism, and the lock release lever includes a rail built-in portion disposed between the bottom wall of the upper rail and the lower rail, the rail built-in portion being a lock The rotation center for providing the release lever to be rotatable in the vertical direction with respect to the upper rail is the front end. It is set between the end; it has a base wall to form a space between the bottom wall and facing life and death the protruding portion, and a pair of side walls extending downwardly from the base wall, a; the The pair of side walls positioned in front of the center of rotation are positioned below the center of rotation and further to the side than the side of the protrusion; and the rotation range of the lock release lever The pair of side walls and the protruding portion overlap in the vertical direction at least in part .

The upper rail has a ceiling portion located above the rail built-in portion, and a pair of side wall portions extending downward from the ceiling portion and located on both sides of the rail built-in portion, and the unlocking It is preferable that the pair of side walls of the lever face the pair of side wall portions.
If comprised in this way, the left-right touch with respect to the upper rail of an unlocking lever will be prevented by the left-and-right side wall of an unlocking lever, and the inner surface of the left-right side wall part of an upper rail.

Ribs facing the pair of side wall portions may be provided on the side surfaces of the pair of side walls.
If comprised in this way, the right-and-left touch prevention effect with respect to the upper rail of a lock release lever will further improve.

As the center of rotation of the lock release lever, on the upper surface of the base wall of the rail internal unit, to form a rotating contact part making contact with the ceiling portion, the rotating contact portion of the upper surface of the base wall of the rail internal portion A space may be formed between the other portion and the ceiling portion.

  According to the present invention, since the unlocking lever has the base wall positioned at a position higher than the protruding portion of the fixing member, the unlocking lever and the protruding portion of the fixing member do not interfere with each other. Therefore, the lock release lever can be disposed close to the bottom wall side of the lower rail, so that the slide rail device can be reduced in size.

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 front diagonally upper direction. 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 an enlarged bottom view near the connection part of the middle part and narrow part of the lock release lever of a modification .

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, FIG. 7 and the like, a locking piece 42 extending downward and then moving backward is formed in the vicinity of the center portion of the ceiling portion 36a of the base portion 36, and left and right side wall portions 36b. An inward locking piece 43 is formed by cutting and raising at a portion located slightly in front of the central portion.

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. In addition, spring hooking grooves 52 are respectively provided in the lower surfaces of the left and right side walls 51 of the unlock lever 47 near the rear end thereof, and the lock spring latch holes 53 and the spring latches are formed in the base wall 47d of the unlock lever 47. Each hole 54 is formed. 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).

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, as shown in FIG. 20, the side walls 5 1 of the left and right lock release lever 47, the ridge line portion 47b, as an alternative to 52a, for example, substantially the rib 47c of the semi-cylindrical shape (instead of the rib ridge portion 52a is not shown) 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 come into contact with a small gap, the effect of the left and right touching of the lock release lever 47 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. Then, when the lock release lever 47 is returned to the locked position after the intermediate portion 48 and the rivet protrusion (the upper end protruding above the bottom wall 22) are aligned, the protrusion becomes the receiving recess 48a. To be located within.

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 Threaded portion 35 Upper rail 36 Base portion 36a Ceiling portion 36b Side wall portion 37 Lever storage groove 38 Rising wall 39 Locked wall 40 Guide groove 42 43 Locking piece 47 Lock release lever 47a Rail built-in portion 47b Ridge portion 47c Rib 47d Base wall 48 Intermediate part 48a Receiving concave part 49 Narrow part 50 Rotating contact convex part (rotating contact part)
51 side wall 52 a spring hook groove 52b ridge 53 lock spring locking hole 54 a spring engaging hole 55 connecting portion 56 distal-regulation section 57 forward acceptable spatial 58 recess 59 rearward acceptable spatial 60 rearward restricting piece 60a rear restricting portion 61 connecting the space 63 Rokkuba Ne <br/> 64 locking portion 65 front engaging piece 66 a lever pressing portion 68 retainer 69 bearing ball 70 loop handle 71 grip portion 72 rear connecting portion 73 below the abutment surface 74 engaging groove 76 torsion scan purine grayed 77 upward projecting piece 78 front engaging portion 79 80 Kakaritome突electromotive A contact portion F floor F1 threaded holes F2 positioning holes N weld nuts P positioning pins

Claims (4)

A lower rail extending in the front-rear direction;
A fixing member that fixes a bottom wall of the lower rail to a vehicle floor surface side, and an upper portion of which forms a protruding portion that protrudes upward from the bottom wall;
An upper rail supported on the lower rail as being slidable in the front-rear direction;
A lock mechanism provided between the upper rail and the lower rail for restricting or releasing the slide of the upper rail;
A lock release lever that is provided on the upper rail so as to be rotatable in the vertical direction, and that releases the slide restriction by the lock mechanism;
The unlocking lever includes a rail built-in portion disposed between the bottom wall of the upper rail and the lower rail,
The rail built-in part is
A center of rotation is provided between the front end and the rear end for providing the lock release lever so as to be rotatable in the vertical direction with respect to the upper rail;
Having a base wall facing the bottom wall and forming a space between the projecting portion and a pair of side walls extending downward from the base wall ;
The pair of side walls located in front of the center of rotation are positioned below the center of rotation and lateral to the side of the protrusion; and
The pair of side walls and the protruding portion overlap in the vertical direction in at least a part of the rotation range of the unlocking lever;
A vehicle slide rail device characterized by the above. The vehicle slide rail device according to claim 1 ,
The upper rail has a ceiling portion located above the rail built-in portion and a pair of side wall portions extending downward from the ceiling portion and located on both sides of the rail built-in portion;
The slide rail device for a vehicle, wherein the pair of side walls of the unlocking lever are respectively opposed to the pair of side wall portions. The vehicle slide rail device according to claim 1 or 2 ,
A vehicle slide rail device in which ribs facing the pair of side wall portions are provided on the side surfaces of the pair of side walls. The vehicle slide rail device according to any one of claims 1 to 3 ,
The center of rotation, is formed on the upper surface of the base wall of the rail internal part consists rotating contact unit which contacts with respect to the ceiling,
A vehicle slide rail device in which a space is formed between a portion other than the rotation contact portion on the upper surface of the base wall of the rail built-in portion and the ceiling portion.

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