JP2014169044A - Slide rail device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular slide rail device capable of inhibiting upward large deformation of a ceiling wall part even when an upper rail moves upward to collide against the ceiling wall part of a lower rail.SOLUTION: An upper rail has: droop parts 31, 42 extending in a lower rail 15 through an opening between right and left ceiling wall parts 19 of the lower rail; a pair of right and left lateral extension parts 32, 43 extending in a horizontal direction while parting from each other from the lower end of the droop part; and a pair of right and left upper extension parts 33, 44 extending upward from the ends of the respective lateral extension parts. The upper rail also has a roller which positions between the outside of the upper extension part and the side wall part facing the outside and comes into contact with the lower rail to be rotatable around the rotation axis of the horizontal direction. Further, contact parts 53, 54 which position between the outside of the upper extension part and the side wall part facing the outside and are bodies separating from the roller are provided to the upper rail to be able to contact with the ceiling wall parts when the upper rail moves upward.

Description

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

FIG. 14 and FIG. 15 are conventional examples of a vehicle slide rail device, which are provided on a channel-like lower rail extending in the front-rear direction and having an upper surface opened, an upper rail inserted into the inner space of the lower rail, and both left and right side surfaces of the upper rail. And a plurality of rollers that rotatably contact the bottom surface of the lower rail. The upper rail supports a seat (not shown). Further, the seat belt anchor provided on the upper rail is provided with a locking means, and a fixing member for the seat belt can be attached to and detached from the locking means.
The lower rail includes a bottom plate portion, a pair of left and right side wall portions extending upward from left and right side edge portions of the bottom plate portion, a pair of left and right ceiling wall portions extending in directions approaching each other from the upper ends of the left and right side wall portions, and left and right ceiling wall portions. A pair of left and right hanging pieces that hang down from the tip of each. An opening extending in the front-rear direction is formed between the left and right ceiling wall portions of the lower rail. On the other hand, the upper rail has a hanging portion that extends from above the lower rail into the lower rail through the opening, a pair of left and right side extensions that extend from the lower end of the hanging portion to the left and right, respectively, and the tips of the side extensions. And a pair of left and right upper extensions that are positioned between the bottom plate portion and the ceiling wall portion of the lower rail and face the left and right sides, respectively.

  The upper rail of the vehicle slide rail device slides in the front-rear direction with respect to the lower rail as each roller rolls on the bottom plate portion of the lower rail.

JP-A-2005-162122

In this vehicle slide rail device, since the upper surfaces of the left and right rollers are spaced downward from the ceiling wall portion of the lower rail, the upward movement of the upper rail relative to the lower rail is not restricted.
Therefore, for example, when a vehicle equipped with a vehicle slide rail device collides with another vehicle or the like located in the front, this collision load is transmitted to the upper rail via the seat belt, the fixing bracket, the locking means, and the belt anchor, As a result, the rear portion of the upper rail is lifted upward.
Then, the upper ends of the left and right upper extensions of the upper rail come into contact with the vicinity of the front ends of the left and right ceiling wall portions of the lower rail (see the circular portion depicted by the chain line in FIG. 14). Since the vicinity of the distal end has a long distance from the base end portion (connecting portion with the side wall portion) of the ceiling wall portion, the right and left ceiling walls can be used even when the force extending from the upper end portion of the upper extension portion is not so large. The part may be greatly deformed (inclined) upward (see FIG. 15) around its base end.

  An object of the present invention is to provide a vehicular slide rail device that can prevent the ceiling wall portion from being greatly deformed upward even when the upper rail moves upward and collides with the ceiling wall portion of the lower rail. .

  The vehicle slide rail device according to the present invention includes a bottom plate portion, a pair of left and right side wall portions extending upward from both side edge portions of the bottom plate portion, and a pair of left and right ceiling walls extending in directions approaching each other from the upper ends of the left and right side wall portions. A channel-like lower rail extending in the front-rear direction in which an opening is formed between the left and right ceiling wall portions, and an upper rail that is inserted into the inner space of the lower rail and is slidable with respect to the lower rail, A pair of left and right side extension portions extending in the left-right direction while being spaced apart from the lower end of the lower portion, the upper rail extending into the lower rail through the opening from above the lower rail. And the left and right side wall portions respectively extending upward from the front ends of the side extension portions and positioned between the bottom plate portion and the ceiling wall portion. It has a pair of left and right upper extensions facing rightward, and is positioned between the outer surface of the upper extension and the side wall facing the outer surface, and slides relative to the lower rail together with the upper rail. A roller in contact with the lower rail so as to be rotatable about a rotation axis in the left-right direction, and located between the outer surface of at least one of the upper extension portions and the side wall portion facing the outer surface; The upper rail is provided with a contact portion separate from the roller, which can contact the ceiling wall when the upper rail moves upward.

And a pair of left and right side surface components extending upward from both side edges of the bottom surface component and extending along the outer surfaces of the left and right upper extensions, respectively, and the upper rail. And a bracket that supports the roller, and the side surface constituting part may constitute the abutting part.
Furthermore, the protrusion part which protruded on the outer surface of the said side surface structure part may comprise the said contact part.

  The upper rail may include the contact portion protruding from the outer surface of at least one of the upper extension portions.

  It is preferable that a distance between the contact portion and the ceiling wall portion is shorter than a distance between the upper extension portion and the ceiling wall portion.

  You may provide the said contact part in the position corresponding to the front-end part or rear-end part of the said upper rail.

In the vehicular slide rail device according to the present invention, the upper rail is located between the outer surface of at least one upper extension and the side wall (of the lower rail) facing the outer surface, and is in contact with the roller separately. Part.
Therefore, for example, when the upper rail is lifted up by collision of a vehicle on which the vehicle slide rail device is mounted with another vehicle or the like positioned forward, the contact portion collides with the ceiling wall portion of the lower rail. However, the collision part with respect to the ceiling wall part of the contact part is the base end side of the ceiling wall part compared to the collision part with respect to the ceiling wall part of the upper extension part (when the upper extension part collides with the ceiling wall part) (Connection side side wall side). Therefore, there is little possibility that the ceiling wall portion is greatly deformed (inclined) upward with the base end portion as a center.

  The bracket of the invention of claim 2 includes a bottom surface configuration portion that traverses the lower surface of the upper rail, and a pair of side surface configuration portions that extend upward from both side portions of the bottom surface configuration portion and respectively abut on both side surfaces of the upper rail, and It is fixed to the upper rail. In other words, since the bracket reinforces the upper rail in a strong manner, even if a large external force is applied to the upper rail during a vehicle collision or the like, the upper rail is deformed (plastic) in the direction in which the left and right upper extensions open outward. It's small. Therefore, it is possible to reduce the possibility that the upper rail cannot slide with respect to the lower rail when a vehicle collision or the like occurs.

  According to the third aspect of the present invention, when the upper rail is lifted upward, the position where the abutting portion collides with the ceiling wall portion of the lower rail is the base end portion (connection with the side wall portion) of the ceiling wall portion. Part). Therefore, it is possible to reduce the possibility that the ceiling wall portion is greatly deformed (inclined) upward with the base end portion as a center.

  If comprised like invention of Claim 4, the structure of the slide rail apparatus for vehicles will become simple.

  According to the fifth aspect of the present invention, when the upper rail is lifted upward, the abutment portion surely abuts against the ceiling wall portion (from the upper extension portion), so that the ceiling wall portion is greatly deformed. It is possible to reduce the risk of doing so.

When the upper rail is lifted upward with respect to the lower rail due to the collision of the vehicle on which the vehicle slide rail device is mounted, the end of the upper rail usually moves largely upward compared to the intermediate portion. Therefore, when the end portion of the upper rail collides with the ceiling wall portion of the lower rail, a larger impact force is applied from the upper rail side to the lower rail side than when the intermediate portion of the upper rail collides with the ceiling wall portion of the lower rail.
However, when configured as in the invention of claim 6, even when the end of the upper rail collides with the ceiling wall of the lower rail, there is a risk that the ceiling wall is greatly deformed (inclined) upward with the base end as a center. Can be small.

It is a side view of the slide rail device for vehicles of one embodiment of the present invention. It is a perspective view of an upper rail unit. It is a perspective view of an upper rail unit in the state where a roller unit was separated. It is sectional drawing which follows the IV-IV arrow line of FIG. It is sectional drawing which follows the VV arrow line of FIG. It is sectional drawing which follows the VI-VI arrow line of FIG. It is a rear view of a slide rail device for vehicles. It is a rear view of the vehicle slide rail device when the protrusion of the roller support bracket of the rear roller unit collides with the ceiling wall of the lower rail due to the upper rail being lifted. It is a rear view of the slide rail device for vehicles of a modification. It is a rear view of the slide rail device for vehicles when an upper extension collides with a ceiling wall part of a lower rail by raising an upper rail. FIG. 10 is a rear view of the vehicle slide rail device when the protruding portion of the roller support bracket of the rear roller unit collides with the ceiling wall portion of the lower rail by further lifting the upper rail. It is a rear view of the slide rail apparatus for vehicles when an upper rail further lifts. It is a perspective view of the rear end part of the roller support bracket of the upper rail and rear roller unit of another modification. It is a rear view of the vehicle slide rail apparatus of a prior art example. It is a rear view of the vehicle slide rail apparatus when an upper extension part collides with the ceiling wall part of a lower rail by raising the upper rail of a prior art 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 rail device 10 is provided on the interior floor of an automobile (vehicle) (not shown).
The slide rail device 10 includes a pair of left and right rail units 12 as large components, and a sheet (not shown) is fixed to the upper surfaces of the left and right rail units 12 (upper rail unit 25).
Since the left and right rail units 12 have a bilaterally symmetric structure, the following description will describe the structure of the right rail unit 12 in detail, and the structure of the left rail unit 12 will not be described in detail.

The right rail unit 12 includes a lower rail 15 and an upper rail unit 25.
The metal lower rail 15 fixed to the vehicle interior floor surface is a channel material that linearly extends in the front-rear direction and that has both front and rear ends and an upper surface (between the left and right ceiling wall portions 19) open. The lower rail 15 includes a fixed portion 16 (bottom plate portion) that is placed on the floor surface of the vehicle, and a pair of roller support portions that extend horizontally from the left and right edges of the fixed portion 16 toward the left and right sides, respectively. 17 (bottom plate portion), a pair of side wall portions 18 extending upward from the outer edge portions of the left and right roller support portions 17, and a pair of ceiling wall portions 19 extending in a direction approaching each other from the upper edge portions of the left and right side wall portions 18. And a pair of hanging pieces 20 that hang down from the inner edges of the left and right ceiling wall portions 19. The right hanging piece 20 has a large number of lock holes 22 aligned in the front-rear direction.

The upper rail unit 25 includes an upper rail 26, a lock member 46, a rear roller unit 50, and a front roller unit 58 as major components.
The upper rail 26, which is a metal front-back symmetrical structure, is formed by joining an outer component plate member 28 and an inner component plate member 40.
The outer component plate-shaped member 28 includes a front support piece 29 and a rear support piece 30 that are separated from each other in the front-rear direction and have circular through holes, and the front support piece 29 and the rear support piece at the front end and the rear end of the upper edge. The hanging part 31 to which the side support piece 30 is connected and the middle part in the vertical direction forms an inclined part, the side extending part 32 extending from the lower edge part of the hanging part 31 to the right side, and the right side of the side extending part 32 And an upper extension 33 extending upward from the edge. The right side surface of the upper extension 33 is formed by a plane. A weld nut 35 welded so as to be concentric with the through hole is fixed to the lower surfaces of the front support piece 29 and the rear support piece 30.
Two shaft escape holes 37 extending downward from the upper edge of the upper extension 33 are formed in the vicinity of the front end of the upper extension 33, and from the lower edge of the upper extension 33 in the vicinity of the rear end. One shaft escape hole 37 extending upward is formed. In addition, three lock holes 39 whose front and rear positions coincide with each other are formed as through holes in the central portion in the longitudinal direction of the hanging portion 31 and the upper extension portion 33.

The inner component plate-like member 40 includes a support piece 41 in which circular through holes are formed in inclined portions at both front and rear ends, a hanging portion 42 extending downward from the support piece 41 and having an intermediate portion in the vertical direction constituting the inclined portion, A side extension 43 extending leftward from the lower edge of the hanging part 42 and an upper extension 44 extending upward from the left edge of the side extension 43 are provided. The left side surface of the upper extension 44 is constituted by a plane. The upper extension 44 is formed with three shaft escape holes 37 having the same arrangement and shape as the upper extension 33 (only the front shaft escape hole 37 is shown in FIG. 4).
As shown in the drawing, the outer constituent plate-like member 28 and the inner constituent plate-like member 40 are configured such that the upper right side surface of the hanging portion 42 of the inner constituting plate member 40 is the left side surface of the upper portion of the hanging portion 31 of the outer constituting plate member 28. In the state in which the front and rear inclined portions of the support piece 41 are in contact with the upper surfaces of the front support piece 29 and the rear support piece 30, respectively, a plurality of portions on the upper portion of the hanging portion 31 and the upper portion of the hanging portion 42 are rivets or It is fixed by spot welding. In this way, the upper rail 26 which is a channel material whose lower surface is opened is completed by fixing the outer component plate member 28 and the inner component plate member 40.

  A metal lock member 46 having three lock claws 47 is supported so as to be rotatable about a rotation axis extending in the front-rear direction with respect to the hanging portion 31. The lock member 46 engages with the upper rail 26 at the lock position (the position in FIG. 3) in which each lock claw 47 engages with the corresponding lock hole 39 and to the left side from the lock hole 39 with which each lock claw 47 corresponds. It can rotate between the unlock position (not shown) to escape. A spring means 49 is provided between the upper rail 26 and the lock member 46, and the spring means 49 urges the lock member 46 to rotate toward the lock position. Therefore, when no external force other than the urging force of the spring means 49 is applied to the lock member 46, the lock member 46 is positioned at the lock position.

The rear roller unit 50 fixed to the rear end portion of the upper rail 26 includes a roller support bracket 51 (bracket) obtained by bending a metal plate into a substantially U-shaped cross section. The roller support bracket 51 includes a substantially horizontal bottom surface configuration portion 52 and a pair of left and right side surface configuration portions 53 (contact portions) extending upward from both left and right edge portions of the bottom surface configuration portion 52. Further, a protruding portion 54 (abutting portion) that protrudes outward is formed in a portion located slightly rearward from the central portion of the outer side surface of the left and right side surface constituting portions 53.
In the left and right side surface constituting parts 53, the vicinity of the inner end of the roller support shaft 55 extending in the left and right direction is fixed in a state of penetrating the side face constituting part 53. The left and right roller support shafts 55 rotatably support a through hole formed at the center of the roller 56 positioned outside each side surface component 53.
The rear roller unit 50 has the inner ends of the roller support shafts 55 positioned in the corresponding shaft escape holes 37, the upper surface of the bottom surface constituting portion 52 is brought into contact with the lower surfaces of the side extensions 32, 43, In addition, the left and right side surface configurations with respect to the rear end of the outer surface of the upper extension portion 33 and the upper extension portion 44 in a state where the inner surfaces of the left and right side surface configuration portions 53 are in contact with the outer surfaces of the upper extension portion 33 and the upper extension portion 44. The portions 53 are fixed to the upper rail 26 by spot welding.

The front roller unit 58 fixed to the front end portion of the upper rail 26 includes a roller support bracket 59 (bracket) obtained by bending a metal plate into a substantially U-shaped cross section. The roller support bracket 59 includes a substantially horizontal bottom surface configuration portion 60 and a pair of left and right side surface configuration portions 61 (contact portions) extending upward from both left and right edge portions of the bottom surface configuration portion 60. In the left and right side surface constituent portions 61, the vicinity of the inner ends of the pair of front and rear roller support shafts 55 extending in the left and right direction is fixed in a state of penetrating the side surface constituent portions 61. A through-hole formed at the center of the roller 56 positioned outside each side surface component 61 is rotatably supported on each of the left and right front roller support shafts 55. The left and right rear roller support shafts 55 are positioned one step higher than the front roller support shaft 55, and the rear roller support shafts 55 are located at the centers of the rollers 57 positioned outside the side surface components 61. The through-hole formed in is rotatably supported.
The front roller unit 58 positions the inner end portion of each roller support shaft 55 inside the corresponding shaft escape hole 37, the upper surface of the bottom surface constituting portion 60 is brought into contact with the lower surfaces of the side extension portions 32 and 43, In addition, the left and right side surface constituent parts 61 with respect to the front ends of the upper extension part 33 and the upper extension part 44 in the state where the inner surfaces of the left and right side surface part parts 61 are in contact with the outer side surfaces of the upper extension part 33 and the upper extension part 44. Each 61 is fixed to the upper rail 26 by spot welding.
In this way, the right upper rail unit 25 is completed by fixing the rear roller unit 50 and the front roller unit 58 to the upper rail 26.

By inserting the upper rail unit 25 into the inner space of the lower rail 15 from the front end opening or rear end opening of the right lower rail 15, the right rail unit 12 is completed.
When the upper rail unit 25 is inserted into the lower rail 15, the left and right upper extensions 33 and 44 are positioned in a space surrounded by the roller support portion 17 (fixed portion 16), the side wall portion 18, and the ceiling wall portion 19. Upper extension portions 33 and 44 respectively oppose the left and right side wall portions 18 in the left-right direction. The rollers 56 of the front roller unit 58 and the rollers 56 of the rear roller unit 50 are in contact with the upper surfaces of the left and right roller support portions 17, and the rollers 57 of the front roller unit 58 are in contact with the lower surface of the ceiling wall portion 19. (See FIG. 1). Further, as shown in FIG. 7, the vertical distance L1 between the upper ends of the left and right projecting portions 54 (outer end portions thereof) and the corresponding lower surface of the ceiling wall portion 19 corresponds to the upper end surfaces of the upper extension portions 33 and 44. It becomes shorter than the vertical distance L2 from the lower surface of the ceiling wall portion 19.

The left rail unit 12 is symmetrical with the right rail unit 12. However, the seat belt anchor (not shown) provided on the left upper rail 26 is provided with a locking means (not shown), and a fixing bracket (not shown) for the seat belt (not shown) is provided for the locking means. Is removable.
The lower rails 15 of the left and right rail units 12 fix their fixing portions 16 to the vehicle interior floor surface in a state where the positions of the front end positions (and the rear end positions) of the two rail units 12 coincide with each other. Further, the left and right side portions of the lower surface of the seat cushion of the seat (not shown) are placed on the support pieces 41 of the left and right upper rail units 25 that are aligned in the front-rear direction, and provided on the lower surface side of the seat cushion. The four bolts (after passing through the through holes formed in the front support piece 29, the rear support piece 30, and the support piece 41) are screwed into the corresponding weld nuts 35, thereby the sheet (sheet Cushion) is fixed to the left and right upper rail units 25 (support pieces 41).
Further, between the lock members 46 of the left and right upper rail units 25, linkage means (not shown) for synchronizing the movements of both is provided. Therefore, when the left and right lock members 46 are positioned at the lock position, the lock claws 47 of the left and right lock members 46 engage with the lock holes 39 and any one of the lock holes 22 (see FIG. 1). The sliding operation in the front-rear direction with respect to the 25 left and right lower rails 15 is restricted.
On the other hand, when the passenger rotates the lock member 46 to the unlock position against the urging force of the spring means 49, the lock claws 47 of the left and right lock members 46 escape from the lock hole 39 and the lock hole 22. Therefore, when the left and right upper rail units 25 (seats) are pressed forward or backward against the left and right lower rails 15, each roller 56 rolls on the corresponding roller support portion 17, and the upper rail unit 25 becomes the lower rail 15. Slide forward or backward.

For example, when the vehicle equipped with the slide rail device 10 collides with another vehicle or the like located in front when the seat belt is connected to the locking means, the collision load is applied to the seat belt, the fixing bracket, the lock It is transmitted to the left upper rail 26 via the means and the belt anchor, and as a result, the rear portions of the left and right upper rails 26 are lifted upward.
Then, as shown in FIG. 8, the upper end portions of the left and right projecting portions 54 (outer end portions) of the rear roller unit 50 collide with the left and right ceiling wall portions 19 of the lower rail 15, respectively. However, the left and right protrusions 54 are both located closer to the base end side of the ceiling wall portion 19 (on the side connecting to the side wall portion 18) than the left and right upper extension portions 33 and 44. At this time, the collision portion of the upper end portion of the projecting portion 54 with respect to the ceiling wall portion 19 is an upward extension when the upper extension portions 33 and 44 collide with the ceiling wall portion 19 (when the rear roller unit 50 is not present). Compared with the collision part with respect to the ceiling wall part 19 of the parts 33 and 44, the distance from the base end part (connection part with the side wall part 18) of the ceiling wall part 19 is short. Therefore, although the left and right ceiling wall portions 19 are deformed (inclined) upward with the base end portion as the center (see FIG. 8), there is little possibility that the amount of deformation (inclination amount) becomes large. On the other hand, the impact force transmitted from the projecting portion 54 to the ceiling wall portion 19 is transmitted to the left and right roller support portions 17 via the left and right side wall portions 18, so that the left and right roller support portions 17 are deformed as shown in FIG.

Further, for example, when another vehicle collides with the rear portion of the vehicle on which the slide rail device 10 is mounted, the front portions of the left and right upper rails 26 are lifted upward by the collision load.
Then, the upper ends of the left and right side surface constituting parts 61 of the front roller unit 58 collide with the left and right ceiling wall parts 19 of the lower rail 15, respectively. However, the left and right side surface constituent parts 61 are located on the base end side of the ceiling wall part 19 (on the connection part side with the side wall part 18) rather than the left and right upper extension parts 33 and 44. Therefore, in this case as well, although the left and right ceiling wall portions 19 are deformed (inclined) upward with the base end portion as the center, there is little possibility that the deformation amount (inclination amount) becomes large.

  Further, the roller support brackets 51 and 59 extend upward from both sides of the bottom surface constituting parts 52 and 60 crossing the lower surface of the upper rail 26 and to the upper extensions 33 and 44 of the upper rail 26, respectively. A pair of side surface components 53 and 61 that are in contact with each other, and is fixed to the upper rail 26. That is, since the roller support brackets 51 and 59 reinforce the upper rail 26, even if a large external force is applied to the upper rail 26 in the event of a vehicle collision, the left and right upper extensions 33 and 44 open outward. The possibility that the upper rail 26 is deformed (plastic) in the direction is small.

  Further, since the inner end portion of the roller support shaft 55 is accommodated in the shaft escape hole 37, the width of the combined body of the upper rail 26, the roller support brackets 51 and 59, and the rollers 56 and 57 (roller support shaft 55). It is possible to reduce (cross-sectional shape).

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention can be implemented, giving various deformation | transformation.
For example, the embodiment shown in FIGS. 9 to 12 can be carried out.
The left and right upper extensions 33 ′ and 44 ′ of the upper rail 26 ′ of this modification extend above the upper extensions 33 and 44 of the upper rail 26. Therefore, as shown in FIG. 9, the upper end surfaces of the upper extensions 33 ′ and 44 ′ are more than the vertical distance L3 between the upper ends of the left and right projecting portions 54 (outer end portions thereof) and the corresponding lower surface of the ceiling wall portion 19. The distance L4 in the vertical direction from the corresponding lower surface of the ceiling wall portion 19 is shorter.
Therefore, for example, when the seat belt is connected to the locking means and the vehicle on which the slide rail device 10 is mounted collides with another vehicle or the like located in front, the rear portions of the left and right upper rails 26 are respectively upward. As shown in FIG. 10, the upper ends of the left and right upper extensions 33 ′ and 44 ′ collide with the left and right ceiling walls 19 of the lower rail 15, respectively. As a result, the left and right ceiling wall portions 19 are deformed (inclined) upward around the base end portion (see FIG. 11).
When the rear portions of the left and right upper rails 26 move further upward, the upper ends of the left and right protrusions 54 (outer end portions) of the rear roller unit 50 are the left and right ceilings of the lower rail 15 as shown in FIG. It collides with the wall part 19 respectively. When the left and right projecting portions 54 collide with the ceiling wall portion 19 in this way, the upper end portions of the left and right upper extension portions 33 ′ and 44 ′ are separated from the left and right ceiling wall portions 19. Due to the impact force applied to the portion 19, the left and right ceiling wall portions 19 are further deformed (inclined) upward about the base end portion (see FIG. 12). However, also in this case, there is little possibility that the amount of deformation (inclination amount) becomes larger. On the other hand, since the impact force transmitted from the projecting portion 54 to the ceiling wall portion 19 is transmitted to the left and right roller support portions 17 via the left and right side wall portions 18, the left and right roller support portions 17 are deformed as shown in FIG.
Although a detailed description is omitted, the lower rail 15 can also be used when the front portions of the left and right upper rails 26 are lifted upward by another vehicle colliding with the rear portion of the vehicle on which the slide rail device 10 is mounted. Is deformed with almost the same behavior as in FIGS.

FIG. 13 shows another modification.
The roller support bracket 51 ′ of the rear roller unit 50 of this modification includes a protruding portion 54 (contact portion) at the rear end portions of the left and right side surfaces. As shown in the drawing, the positions of the rear end surface of the projecting portion 54 and the rear end surfaces of the upper extension portions 33 and 44 coincide with each other, and the rear edge portion of the projecting portion 54 is welded to the rear edge portions of the upper extension portions 33 and 44. It is.
For example, when the seat belt is connected to the locking means, the rear rails of the upper rails 26 and 26 'are caused by a vehicle on which the slide rail device 10 is mounted colliding with another vehicle or the like located in front. Is lifted upward with respect to the lower rail 15, the rear end portions of the upper rails 26, 26 ′ usually move largely upward as compared with the intermediate portion and the front portion. Therefore, when the rear end portions of the upper rails 26 and 26 ′ collide with the ceiling wall portion 19 of the lower rail 15, compared with the case where the middle portion of the upper rails 26 and 26 ′ collides with the ceiling wall portion 19 of the lower rail 15. A large impact force is applied from the 26, 26 'side to the lower rail 15 side.
However, when the protruding portion 54 is located at the rear end portion of the upper rails 26 and 26 ′ as in this modification, the protruding portion 54 collides with the ceiling wall portion 19 of the lower rail 15. However, it is possible to reduce the risk of large deformation (inclination) upward with the base end portion as the center.

Further, the protrusions 54 may be provided on the roller support brackets 51 and 59, or the protrusions 54 may be provided only on the roller support bracket 59. Further, when the protrusion 54 is provided on the roller support bracket 59, the protrusion 54 may be provided at the front end of the roller support bracket 59.
Further, the protrusions 54 may be provided only on either the left or right side of the roller support bracket 51 and / or the roller support bracket 59.
Further, the protrusion 54 may be omitted from the roller support bracket 51. In this case, the side surface configuration portion 53 of the roller support bracket 51 functions as a “contact portion”.
Furthermore, the roller support bracket 51 or (and) the roller support bracket 59 may include the side surface constituting parts 53 and 60 (and the protruding part 54) on only one of the left and right sides.
Further, instead of omitting the roller support bracket 51 or (and) the roller support bracket 59 (the roller support shaft 55 is attached to the upper extensions 33, 33 ′ and the upper extensions 44, 44 ′), the right upper extension 33, Cutting a part of the upper extensions 33, 33 ', 44, 44' on the right side (outer side) of 33 'and / or the left side (outer side) of the left upper extension 44, 44'. Thereby, you may form the contact part which protrudes outside from the outer surface of upper extension part 33, 33 ', 44, 44'. Instead of cutting up a part of the upper extensions 33, 33 ′, 44, 44 ′, a contact portion formed separately from the upper extensions 33, 33 ′, 44, 44 ′ is used as the upper extensions 33, 33. It may be fixed to the outer surface of ', 44, 44' by welding or the like.
Also, the left and right side surface constituting parts 53, 61 of the roller support brackets 51, 59 are brought into contact with the left and right upper extensions 33, 33 ', 44, 44' of the upper rail 26, and are then placed on the lower surfaces of the upper rails 26, 26 '. You may weld the bottom face structure parts 52 and 60. FIG.

10 Slide rail device 12 Rail unit 15 Lower rail 16 Fixed part (bottom plate part)
17 Roller support (bottom plate)
18 Side wall part 19 Ceiling wall part 20 Hanging piece 22 Lock hole 25 Upper rail unit 26 26 'Upper rail 28 Outer component plate-like member 29 Front side supporting piece 30 Rear side supporting piece 31 Hanging part 32 Side extension part 33 33' Upper extension part 35 Weld nut 37 Shaft escape hole 39 Lock hole 40 Inner component plate-like member 41 Support piece 42 Hanging part 43 Side extension 44 44 'Upper extension 46 Lock member 47 Lock claw 49 Spring means 50 Rear roller unit 51 51 'Roller support bracket (bracket)
52 Bottom surface configuration portion 53 Side surface configuration portion (contact portion)
54 Protruding part (contact part)
55 Roller support shaft 56 57 Roller 58 Front roller unit 59 Roller support bracket (bracket)
60 bottom surface component 61 side surface component (contact portion)

Claims (6)

The left and right ceilings, comprising: a bottom plate portion; a pair of left and right side wall portions extending upward from both side edge portions of the bottom plate portion; and a pair of left and right ceiling wall portions extending in a direction approaching each other from the upper ends of the left and right side wall portions. A channel-shaped lower rail extending in the front-rear direction in which an opening is formed between the walls,
An upper rail inserted into the inner space of the lower rail and slidable with respect to the lower rail;
In a vehicle slide rail device comprising:
The upper rail extends from the upper side of the lower rail into the lower rail through the opening, a pair of left and right side extensions extending away from the lower end of the lower part, and the ends of the side extensions. A pair of left and right upper extension portions that are located between the bottom plate portion and the ceiling wall portion and face the left and right side wall portions respectively in the left-right direction,
Rotating about the rotation axis in the left-right direction with respect to the lower rail, which is located between the outer surface of the upper extension and the side wall portion facing the outer surface and slides with the upper rail with respect to the lower rail. With a roller to contact as possible,
The roller positioned between the outer surface of at least one upper extension and the side wall facing the outer surface and capable of contacting the ceiling wall when the upper rail moves upward. A vehicle slide rail device, wherein a separate contact portion is provided on the upper rail. The vehicle slide rail device according to claim 1,
And a pair of left and right side surface components extending upward from both side edges of the bottom surface component and extending along the outer surfaces of the left and right upper extensions, respectively, and the upper rail. And a bracket for supporting the roller,
A slide rail device for a vehicle, wherein the side surface constituting portion constitutes the abutting portion. The vehicle slide rail device according to claim 2,
A vehicle slide rail device in which a projecting portion protruding from an outer surface of the side surface constituting portion constitutes the abutting portion. The vehicle slide rail device according to claim 1,
A vehicular slide rail device including the abutting portion, wherein the upper rail protrudes from the outer surface of at least one upper extension portion. The vehicle slide rail device according to any one of claims 1 to 4,
The vehicle slide rail device, wherein a distance between the contact portion and the ceiling wall portion is shorter than a distance between the upper extension portion and the ceiling wall portion. The vehicle slide rail device according to any one of claims 1 to 5,
A vehicle slide rail device in which the contact portion is provided at a position corresponding to a front end portion or a rear end portion of the upper rail.

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