JP2019001260A - Vehicle seat rail - Google Patents

Abstract

To provide a vehicle seat rail which enables reduction of movement of a seat when a load is input.SOLUTION: A vehicle seat rail includes: a front portion having a first frame fixing part for attachment to a vehicle seat; a rear portion having a second frame fixing part for attachment to the vehicle seat; and an intermediate portion provided between the front portion and the rear portion. The front portion includes a flat plate member provided along a vertical direction. The vehicle seat rail further includes an attachment plate member provided along lower sides of the front portion, the intermediate portion, and the rear portion.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a seat rail used for a vehicle seat, and more particularly to a vehicle seat rail that holds a vehicle seat slidably back and forth with respect to a vehicle body.

  The vehicle seat is configured to be slidable back and forth by incorporating two upper seat rails attached to the seat cushion frame of the vehicle seat into two lower seat rails attached to the vehicle. This type of vehicle seat is supported so that when an impact load is input to the vehicle, a load such as an inertial force acting on the seat or a seated person is distributed to the vehicle body or the like via the lower seat rail. For this reason, high strength and rigidity are required for the lower seat rail and the seat rail holding portion on the vehicle body side. A structure of a seat rail for coping with this is disclosed in Patent Document 1.

JP 2017-13639 A

  When an impact load is input to the vehicle, the seat itself tends to move due to a load such as an inertial force acting on the seat and the seated person, so that the seat rail and its mounting portion are attempted to be destroyed. In order to prevent the breakage, it is necessary to improve the strength of the seat rail itself or to strengthen the mounting part, but this increases the cost of parts and significantly increases the weight of the seat rail. was there.

  An object of the present invention is to provide a vehicle seat rail that can reduce movement of a seat when a load is input.

  Other problems and novel features will become apparent from the description of the specification and the accompanying drawings.

  The outline of typical ones of the present invention will be briefly described as follows.

  That is, the vehicle seat rail includes a front portion having a first frame fixing portion for attachment to the vehicle seat, a rear portion having a second frame fixing portion for attachment to the vehicle seat, and the front portion. And an intermediate portion provided between the rear portion and the rear portion. The front portion includes a flat plate member provided along the vertical direction. The vehicle seat rail further includes a mounting plate member provided along the lower side of the front portion, the intermediate portion, and the rear portion.

  According to the vehicle seat rail of the present invention, it is possible to provide a vehicle seat rail that can reduce the movement of the seat when a load is input.

1 is a perspective view of a vehicle seat rail and a seat according to an embodiment. It is a side view of a vehicular seat rail and a seat concerning an example. It is a perspective view which shows the structure of the upper seat rail which concerns on an Example. It is an enlarged view of VI part of FIG. It is sectional drawing which follows the VV line of FIG. It is a figure for demonstrating notionally the vehicle seat rail and seat which concern on an Example. It is a figure for demonstrating the attachment method of a lip cover.

  Embodiments of the present invention will be described below with reference to the drawings.

  It should be noted that the disclosure is merely an example, and the drawings may be schematically represented with respect to the width, thickness, shape, and the like of each part in comparison with actual aspects for the sake of clarity. The interpretation is not limited. In addition, in the present specification and each drawing, elements similar to those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description may be omitted as appropriate. In the drawings, the arrow FR indicates the front of the vehicle, the arrow RR indicates the rear of the vehicle, the arrow LH indicates the left side of the vehicle, and the arrow RG indicates the right side of the vehicle. In the following description, unless otherwise specified, front, rear, upper, lower, left, and right mean front, rear, upper, lower, left, and right with respect to the vehicle. .

  FIG. 1 is a perspective view of a vehicle seat rail and a seat according to an embodiment. FIG. 2 is a side view of the vehicle seat rail and the seat according to the embodiment.

  1 and 2 show a skeleton (frame) of a passenger seat 1 installed in a passenger compartment, and a pair of left and right right lower seat rails for slidably supporting the seat 1 in the front-rear direction. (Lower seat rail) It is a figure which shows 4R and the left lower seat rail 4L.

  In FIG. 1, the skin, cushion pad, and the like constituting the seat are omitted, and a seat back frame 3 that supports the waist and back of the occupant is provided at the rear end of the seat cushion frame 2 that supports the occupant's hips and thighs. It is connected so that it can tilt.

  The seat cushion frame 2 includes a right frame 21R and a left frame 21L on the left and right in the vehicle width direction. A right upper seat rail (upper seat rail) 5R and a left upper seat rail 5L are attached to lower ends of the right frame 21R and the left frame 21L by screw members or the like, respectively. Each of the right upper seat rail 5R and the left upper seat rail 5L is supported by the right lower seat rail 4R and the left lower seat rail 4L so as to be slidable. That is, the vehicle seat rail includes left and right lower seat rails (4R, 4L) and left and right upper seat rails (5R, 5L).

  The right frame 21R and the left frame 21L are connected to each other by the pipe member 6 below the rear side of both. A headrest stay fixing portion 7 for supporting the headrest is provided at the central portion of the upper end portion of the seat back frame 3.

  The right lower seat rail 4R and the left lower seat rail 4L are seat rails having a substantially U-shaped cross section extending substantially along the longitudinal direction of the vehicle body. The right lower seat rail 4R and the left lower seat rail 4L are arranged on the floor portion of the vehicle body. It is attached using a fixing member such as a rivet.

  The pipe member 6 is provided with a retractor for a seat belt device. The seat belt pulled out from the retractor is passed through a through ring fixing portion 8 installed at the upper left end portion of the seat back frame 3, and the front end portion thereof is disposed on the rear side 9 of the left frame 21L (not shown). It is connected to a pretensioner fixing part (not shown) to which the pretensioner is fixed. A seat belt plate is passed through the middle portion of the seat belt pulled out from the through ring fixing portion 8. The seat belt plate is detachable from the buckle 9 provided on the right frame 21R.

  FIG. 3 is a perspective view illustrating the configuration of the upper seat rail. FIG. 3 is a perspective view of the left upper seat rail 5L, but the right upper seat rail 5R has basically the same configuration. Hereinafter, the configuration of the left upper seat rail 5L will be described as an example. The upper seat rails (5R, 5L) are provided with a locking mechanism for the lower seat rails (4R, 4L), but the locking mechanism is not shown in FIG. 3 for simplification of the drawing.

  The left upper seat rail 5L includes a front part 5LF, a rear part 5LR, and an intermediate part 5LM between the front part 5LF and the rear part 5LR. The left upper seat rail 5L also includes a first upper rail 51, a second upper rail 52, a first fixing member 53, and a second fixing member 54.

  Each of the first upper rail 51 and the second upper rail 52 has two first rollers and a second roller. In the drawing, two first rollers 521 and second rollers 522 provided on the second upper rail 52 are shown. Although not shown in FIG. 3, the first upper rail 51 is similarly provided with a first roller 511 and a second roller 512 (see FIG. 6). These rollers (511, 512, 521, 522) are fitted into the left lower seat rail 4L, and the left upper seat rail 5L is supported to be slidable with respect to the left lower seat rail 4L. The pair of rollers 512 and 522 is provided on the rear portion 5LR of the left upper seat rail 5L. The pair of rollers 511 and 521 are provided in an intermediate portion 5LM of the left upper seat rail 5L.

  The first fixing member 53 fixes the first upper rail 51 and the second upper rail 52 at the front portion 5LF of the left upper seat rail 5L. The second fixing member 54 fixes the first upper rail 51 and the second upper rail 52 at the rear portion 5LR of the left upper seat rail 5L.

  The first fixing member 53 includes an upper member 531 and a lower member 532. The upper member 531 and the lower member 532 are fixedly installed by welding or the like, and are screwed to the first upper rail 51 and the second upper rail 52. It is fixed by etc.

  Further, a flat plate member 533 provided along the vertical direction or the upward direction UP is attached to the first fixing member 53. The flat plate member 533 is provided with a convex portion or a protruding portion 533c, and the convex portion or the protruding portion 533c of the flat plate member 533 is fitted into an opening 531o provided in the upper member 531 and fixed. Further, the lower portion of the flat plate member 533 is fixed to the upper surface of the front portion of the mounting plate member 55 attached along the entire lower surface of the left upper seat rail 5L. The mounting plate member 55 is provided with a step portion 551 between the portion where the lower portion of the flat plate member 533 is attached and the mounting portion of the roller 521 of the left upper seat rail 5L.

  The plate thickness T along the vehicle width direction or the left-right direction of the flat plate member 533 and the length L along the front-rear direction are appropriately determined or changed in consideration of the gravity of the seat 1 and the magnitude of the input load. The The height H of the flat plate member 533 along the vertical direction (upward UP) is appropriately determined or changed in consideration of the gravity of the sheet 1, the magnitude of the input load, and the like, and is further described with reference to FIG. It can be adjusted as appropriate in consideration of the attachment of the cover.

  The first fixing member 53 has a first frame fixing portion 534 for fixing the left upper seat rail 5L to the front portion of the left frame 21L of the seat 1 with a screw member or the like. Similarly, the second fixing member 54 has a second frame fixing portion 542 for fixing the left upper seat rail 5L with a screw member or the like at the rear portion of the left frame 21L of the seat 1 (see FIG. 2).

  FIG. 4 is an enlarged view of a portion IV in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. In FIG. 5, rollers 511 and 521 of the left upper seat rail 5L installed on the left lower seat rail 4L are depicted.

  FIG. 4 corresponds to an enlarged view of a structure in which the left upper seat rail 5L attached to the left frame 21L of the seat 1 is attached to the left lower seat rail 4L. A pin member 100 made of metal or the like is provided on the bottom surface portion (4La) of the left lower seat rail 4L. The pin member 100 is a substantially oval shape when viewed from above, has a flat portion on the upper surface, and has a predetermined height, and is fitted into a hole provided in the bottom wall portion 4La of the left lower seat rail 4L. It is stuck and fixed. In this embodiment, the pin member 100 has an oval shape when viewed from above, but is not limited thereto, and may be, for example, circular or square. The pin member 100 is provided to protrude upward from the bottom surface portion (4La) of the left lower seat rail 4L by a predetermined height. As shown in the cross-sectional view of FIG. 5, the left lower seat rail 4L includes a substantially horizontal bottom wall portion 4La, a pair of side wall portions 4Lb provided so as to rise upward from both the left and right sides of the bottom wall portion 4La, And an L-shaped wall portion 4Lc that extends downward from each upper end portion of the side wall portion 4Lb toward the center of the lower seat rail. In the present embodiment, the bottom wall portion 4La has a first bottom wall portion 4La1 and a second bottom wall portion 4La2 that extends on both sides thereof and supports the rollers (511, 521). A groove 4Ld extending in the longitudinal direction is formed between the left and right L-shaped wall portions 4Lc of the seat rail 4L. The left upper seat rail 5L is inserted into the groove 4Ld. The rollers 511 and 521 of the left upper seat rail 5L are inserted into a space surrounded by the left and right L-shaped wall portions 4Lc and the side wall portions 4Lb of the left lower seat rail 4L. In FIG. 5, the configuration of the left lower seat rail 4L has been described, but the right lower seat rail 4R is configured similarly to the left lower seat rail 4L.

  A case where a lateral load input from the vehicle width direction (left direction or right direction) is input will be described. Since the flat plate member 533 is provided so as to penetrate the front portion 5LF of the left upper seat rail 5L, the upper member 531, the lower member 532, and the mounting plate member 55 are connected to each other, and the front portion of the upper seat rail is connected. The strength can be reinforced, and the rigidity of the left upper seat rail 5L with respect to the lateral load input from the vehicle width direction (left direction or right direction) can be improved.

  A case where a load such as a forward collision is input will be described. In this case, a force is applied so that the through-ring fixing portion 8 installed at the upper left end of the seat back frame 3 shown in FIG. 1 or FIG. Tries to move in the downward direction as shown by arrow B in FIG. In this case, referring to FIGS. 4 and 5, the front side portion of the mounting plate member 55 to which the flat plate member 533 is attached comes into contact with the pin member 100 provided inside the left lower seat rail 4 </ b> L. The amount of movement of the ring fixing portion 8 can be reduced or suppressed.

  Next, a case where a load such as a rear collision is input will be described. In this case, a force is applied so that the through-ring fixing portion 8 installed at the upper left end of the seat back frame 3 shown in FIG. 1 or FIG. Tries to move in the upward direction as shown by arrow A in FIG. In this case, since the step portion 551 provided in the attachment plate member 55 is provided, the attachment plate member 55 extends in the longitudinal direction by the step portion 551, thereby absorbing the load and reducing the movement amount of the through ring fixing portion 8. It can be reduced or suppressed.

  FIG. 6 is a conceptual diagram for explaining the relationship between the left and right lower seat rails and the left and right upper seat rails. FIG. 6A is a conceptual top view when the left and right lower rails and the left and right upper rails are viewed from above. FIG. 6B is a cross-sectional view of the left lower rail along BB in FIG. FIG. 6C is a cross-sectional view of the right lower rail along CC in FIG. In the drawing, the seat cushion frame 2, the seat back frame 3, the headrest stay fixing portion 7, and the through ring fixing portion 8 of the seat 1 are depicted. In addition, in the drawing, the mounting plate member 55 is not drawn for simplification of the drawing, but as explained in FIG. 3, along the lower portions of the left and right upper seat rails 5L, 5R, It is attached as a whole. Like the left upper seat rail 5L, the right upper seat rail 5R includes a front part 5RF, a rear part 5RR, and an intermediate part 5RM between the front part 5RF and the rear part 5RR.

  As shown in FIG. 6A, the left and right upper seat rails 5L and 5R are attached to the seat cushion frame 2, and the left and right upper seat rails 5L and 5R are attached to the left and right lower seat rails 4L and 4R. It is done. Thereby, the seat 1 is made slidable along the lower seat rails 4L and 4R. As described above, the left upper seat rail 5L is provided with the first fixing member 53 at the front portion 5LF, and is provided with four rollers 521, 522, 511, and 512. The two rollers 521 and 511 are provided in the middle portion 5LM of the left upper seat rail 5L, and the other two rollers 522 and 512 are provided in the rear portion 5LR of the left upper seat rail 5L. The first fixing member 53 is provided with a flat plate member 533. Similarly, the right upper seat rail 5R is provided with a first fixing member 53 at its front portion 5RF, and four rollers 521, 522, 511, and 512 are provided. The two rollers 521 and 511 are provided in the middle portion 5RM of the right upper seat rail 5R, and the other two rollers 522 and 512 are provided in the rear portion 5RR of the right upper seat rail 5R. Similarly, a flat plate member 533 is provided on the first fixing member 53 of the right upper seat rail 5R.

  As shown in FIGS. 6B and 6C, each of the left and right lower seat rails 4L, 4R has one pin member 100 that is formed in an elongated shape in the longitudinal direction of the lower seat rails 4L, 4R. Is provided. In this example, the pin member 100 is provided at a position corresponding to a lower position of the front portion of the flat plate member 533 in a state where the seat 1 is locked at a predetermined front and rear position. When a load such as a forward collision is input, the upper end of the seat back frame 3 tries to move forward, and the upper seat rail also tries to move the front portion of the mounting plate member 55 downward. Since the movement of the front side portion of the mounting plate member 55 is brought into contact with the upper surface of the pin member 100 in the middle of the movement, the movement amount of the sheet 1 can be reduced or suppressed. Further, since the rigidity of the front portion of the mounting plate member 55 is enhanced in the vertical direction by the flat plate member 533, the mounting plate member 55 is prevented from being damaged due to bending or the like. A plurality of pin members 100 may be provided for each of the left and right lower seat rails 4L, 4R.

  Thus, the flat plate member 533 and the mounting plate member 55 are provided for each of the left and right upper seat rails 5L and 5R, and the pin member 100 is provided for each of the left and right lower seat rails 4L and 4R. Thereby, when a load is input at the time of a front collision and a rear collision, it is possible to reduce or suppress the movement amount of the entire seat 1, particularly the upper end side portion of the seat back frame 3. Although FIG. 6 illustrates the passenger seat side seat, it can also be applied to the left and right upper seat rails and the left and right lower seat rails of the driver seat side seat.

  FIG. 7 is a view for explaining a method of attaching the lip cover. As shown in FIG. 7, the lip covers 60R, 60L are indicated by arrows between the left and right upper end portions 70a of the mounting frame 70 provided on the floor portion of the vehicle body and the left and right side wall portions 4Lb of the left lower seat rail 4L. As shown, the left upper seat rail 5L is fitted from the left and right directions.

  As described with reference to FIG. 3, the first fixing member 53 of the left upper seat rail 5L is provided with a flat plate member 533 substantially perpendicularly. A space having a height Ha is provided between the bottom surface 532a of the lower member 532 and the upper portion Fa (or the upper side surface of the left and right L-shaped wall portions 4Lc) of the vehicle body. This height Ha is controlled by the vertical length H of the flat plate member 533, and is slightly larger than the length La of the claw portions 60Ra and 60La provided on the left and right lip covers 60R and 60L. . Therefore, the assemblability of the lip covers 60R and 60L is improved, and the efficiency of assembling work can be improved.

  As mentioned above, the invention made by the present inventor has been specifically described based on the examples. However, the present invention is not limited to the above-described embodiments and examples, and needless to say, various modifications can be made. .

1: Vehicle seat 2: Seat cushion frame 3: Seat back frame 4R, 4L: Lower seat rail 5R, 5L: Upper seat rail 533: Flat plate member 533c: Protruding portion 55: Mounting plate member 551: Step portions 511, 512, 521 , 522: roller 100: pin member 60R, 60L: lip cover

Claims (7)

A front portion having a first frame fixing portion for attachment to a vehicle seat;
A rear portion having a second frame fixing portion for attaching to the vehicle seat;
An intermediate part provided between the front part and the rear part,
The front portion includes a flat plate member provided along the vertical direction,
Including a mounting plate member provided along the lower side of the front part, the intermediate part and the rear part;
A vehicle seat rail characterized by the above. The vehicle seat rail according to claim 1,
Each of the intermediate portion and the rear portion is a vehicle seat rail having a pair of rollers. The vehicle seat rail according to claim 2,
The mounting plate member is connected to the flat plate member,
The mounting plate member further includes a step portion between a connection portion of the flat plate member and a mounting portion of the pair of rollers provided in the intermediate portion. The vehicle seat rail according to claim 3,
The front portion includes a fixing member having an opening,
The flat plate member is a vehicle seat rail having a convex portion that is fitted into the opening. The vehicle seat rail according to claim 4,
The vehicle seat rail is an upper seat rail. The vehicle seat rail according to claim 5,
In addition, including a lower seat rail,
The vehicle seat rail, wherein the roller of the upper seat rail is fitted into the lower seat rail, and the upper seat rail is slidably supported on the lower seat rail. The vehicle seat rail according to claim 6,
A pin member is provided on the bottom surface of the lower seat rail,
The mounting plate member is a vehicle seat rail that contacts the pin member when a load is input.

Images