JP2019151241A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which can obtain large rigidity on a lower end side of a lifter link.SOLUTION: A link bracket 15 has a tunnel part 15A which is so bent as to be projected upward. Thus, bending rigidity and torsional rigidity of the link bracket 15 are improved. A connection pin 14 is deviated in a direction parallel to a center axis with respect to a slide device 10. Thus, even when a position of the lifter link 13 is low, interference between the lifter link 13 and the slide device 10 can be avoided. Accordingly, a height of a seat body 2 can be lowered, a vertical deviation between the slide device 10 and a center axis Lo can be reduced. Consequently, since moment occurring when a load in a seat width direction acts on the seat body becomes small, deformation of a vehicle seat can be reduced. In other words, rigidity of the vehicle seat in a seat width direction can be improved.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a vehicle seat mounted on a vehicle.

  For example, in the invention described in Patent Document 1, for the purpose of suppressing an increase in seat seat surface height, the height at which at least a part of the fastening rivet for the lifter link overlaps with the bottom wall portion of the integrated bracket is set. Has been placed. Furthermore, in the said invention, the notch part is provided in the said bottom wall part for the purpose of avoiding interference with the crushing part of a fastening rivet and a bottom wall part.

  The lifter link is a member for moving the seat body up and down. The integrated bracket is a member for fixing the lifter link to the movable rail. The crushed portion is an umbrella-like or flange-like flange portion, and is a portion where a part of the fastening rivet is plastically deformed by plastic working such as caulking.

JP 2017-154533 A

  In the invention described in Patent Document 1, since the notch portion is provided in the bottom wall portion, it is difficult to increase the rigidity of the connecting portion between the lifter link and the integrated bracket. In view of this point, the present application discloses an example of a vehicle seat capable of obtaining high rigidity on the lower end side of the lifter link.

  The vehicle seat is, for example, a lifter link (13) for moving the seat main body up and down, the upper end side being pivotably connected to the seat main body, and the lower end side being connected to the vehicle via the pedestal (10). A lifter link (13) that is swingably connected to the lower link, and a lower end side of the lifter link (13) that is swingably connected via a connecting pin (14) and that is fixed to the base (10). A bracket (15) having a tunnel portion (15A) curved so that a portion above the central axis (Lo) of the connecting pin (14) is convex upward; I have. Furthermore, it is desirable that the connecting pin (14) is displaced in the seat width direction with respect to the pedestal (10).

  Since the link bracket (15) has the tunnel portion (15A) curved so as to be convex upward, the bending rigidity and torsional rigidity of the link bracket (15) are improved. Since the connecting pin (14) is displaced in the seat width direction with respect to the pedestal (10), even if the position of the lifter link (13) is low, the lifter link (13) and the pedestal (10) Interference can be avoided.

  Accordingly, in the vehicle seat, the height of the seat body (2) can be reduced, and the vertical displacement between the pedestal (10) and the central axis (Lo) can be reduced. As a result, the moment generated when a load in the seat width direction acts on the seat body (2) is reduced, so that the deformation of the vehicle seat can be reduced. In other words, the rigidity of the vehicle seat in the seat width direction can be improved.

The vehicle seat may have the following configuration.
A first fastening member (15D) and a second fastening member for fixing the link bracket (15) to the pedestal (10) on the front side of the tunnel portion (15A) and the rear side of the tunnel portion (15A). It is desirable that (15E) is arranged. Thereby, since it becomes the structure by which the one side and the other side were fixed on both sides of the tunnel part (15A), a deformation | transformation of a link bracket (15) can be suppressed reliably.

  The pedestal is a slide device (10) having a movable rail (12) that is slidable with respect to the vehicle. The link bracket (15) is fixed to the upper surface (12A) of the movable rail (12), and further has a central axis. (Lo) is desirably the same height as the upper surface (12A) of the movable rail (12) or lower than the upper surface (12A). Thereby, since the gravity center position of the seat body (2) can be lowered, the rigidity in the seat width direction of the vehicle seat can be improved.

  In addition, the said vehicle seat is "the structure by which the connection pin (14) is provided with the umbrella-shaped crimping part (14B) which prevents that a connection pin (14) falls from a lifter link (13)." Particularly preferred.

  Incidentally, the reference numerals in the parentheses above are examples showing the correspondence with the specific configurations described in the embodiments described later, and the present disclosure is limited to the specific configurations indicated in the reference numerals in the parentheses. It is not something.

It is a figure which shows the vehicle seat which concerns on 1st Embodiment. It is an exploded view of the slide apparatus which concerns on 1st Embodiment. It is a figure which shows the slide apparatus which concerns on 1st Embodiment. It is a figure which shows the structure of the slide apparatus which concerns on 1st Embodiment. It is a figure which shows the characteristic part of the slide apparatus which concerns on 1st Embodiment. It is characteristic explanatory drawing of the slide apparatus which concerns on 1st Embodiment.

  The following “embodiments of the invention” show examples of embodiments belonging to the technical scope of the present disclosure. In other words, the invention specific items described in the claims are not limited to the specific configurations and structures shown in the following embodiments.

  At least one member or part described with at least a reference numeral is provided, except where “one” or the like is cut off. That is, when there is no notice such as “one”, two or more members may be provided.

  The present embodiment is an example in which the seat according to the present application is applied to a seat (hereinafter referred to as a vehicle seat) mounted on a vehicle such as a vehicle. The arrows and the like indicating the directions given to the drawings are described for easy understanding of the relationship between the drawings.

  Therefore, the invention according to the present application is not limited to the directions attached to the drawings. The directions shown in the drawings are directions in a state where the vehicle seat according to the present embodiment is assembled to the vehicle.

(First embodiment)
1. Overview of Vehicle Seat The seat body 2 of the vehicle seat 1 includes at least a seat cushion 3 and a seat back 5 as shown in FIG. The seat cushion 3 is a part for supporting the buttocks of the seated person. The seat back 5 is a part for supporting the back of the seated person.

  The slide device 10 is an example of a pedestal that supports the seat body 2 in a slidable manner. The slide device 10 is provided on one end side (for example, the right end side) in the sheet width direction and on the other end side (for example, the left end side) in the sheet width direction.

  The seat body 2 is connected to each slide device 10 via a plurality of lifter links 13. Each slide device 10 is connected to at least two lifter links 13. The upper end side of each lifter link 13 is connected to the seat body 2 so as to be swingable.

  The lower end side of each lifter link 13 is swingably connected to the slide device 10. For this reason, the lower end side of each lifter link 13 is configured to be swingably connected to the vehicle via the slide device 10.

  Each lifter link 13 is a member for moving the seat body 2 up and down. In the state where each lifter link 13 is laid down, the seat body 2 is in a lowered state. In the state where each lifter link 13 is erected, the seat body 2 is raised.

2. Configuration of slide device <Outline of configuration>
The following description relates to the slide device 10 disposed on the other end side in the seat width direction of the vehicle seat 1 mounted on one end side in the vehicle width direction. As shown in FIG. 2, the slide device 10 includes at least a fixed rail 11 and a movable rail 12.

  The fixed rail 11 is a member that is fixed to the vehicle and extends in the front-rear direction of the seat (see FIG. 1). The fixed rail 11 is fixed to a vehicle body Bd (see FIG. 1), a vehicle floor panel, and the like. The extending direction of the fixed rail 11, that is, the seat front-rear direction coincides with the vehicle front-rear direction.

  The movable rail 12 is supported so as to be displaceable in the front-rear direction of the seat with respect to the fixed rail 11. Each lifter link 13 is fixed to the movable rail 12 via a connecting pin 14 and a link bracket 15 (see FIG. 3).

  The connection structure between the lifter link 13 and the movable rail 12 disposed on the front side of the seat and the connection structure between the lifter link 13 and the movable rail 12 disposed on the rear side of the seat are the same. The following description is a connection structure on the seat rear side.

<Connecting pin>
As shown in FIG. 4, the connecting pin 14 is connected to the link bracket 15 in a state of penetrating the lifter link 13 in the seat width direction. A first flange portion 14A is provided at one end of the connecting pin 14 in the central axis direction (in the present embodiment, the end portion on the link bracket 15 side). The central axis of the connecting pin 14 is parallel to the sheet width direction.

  A second flange portion 14B is provided at the other end in the central axis direction of the connecting pin 14 (in the present embodiment, the end portion on the lifter link 13 side). The first flange portion 14A and the second flange portion 14B are umbrella-shaped portions protruding outward in the radial direction. Thereby, the connecting pin 14 is prevented from falling off the lifter link 13 and the link bracket 15.

  The first flange portion 14 </ b> A is a portion that is integrally formed with the cylindrical main body portion 14 </ b> C when the connecting pin 14 is manufactured. The second flange portion 14B is a caulking portion integrally formed with the main body portion 14C by caulking.

  That is, the second flange portion 14B is an umbrella-shaped portion formed by performing plastic processing such as caulking on the main body portion 14C after the main body portion 14C is inserted through the link bracket 15 and the lifter link 13. is there.

  The connecting pin 14 is disposed at a position shifted in the sheet width direction with respect to the slide device 10. Specifically, the connecting pin 14 is shifted to the left side of the seat with respect to the movable rail 12. The central axis Lo is at the same height as the upper surface 12A of the movable rail 12 or at a lower height than the upper surface 12A.

<Link bracket>
As shown in FIG. 5, the link bracket 15 is provided with a tunnel portion 15A, a first fixing portion 15B, and a second fixing portion 15C. The tunnel portion 15A is a portion that is curved so that a portion above the central axis Lo of the connecting pin 14 is convex upward.

  The first fixing portion 15 </ b> B and the second fixing portion 15 </ b> C are portions for fixing the link bracket 15 to the movable rail 12. The tunnel portion 15A, the first fixing portion 15B, and the second fixing portion 15C are integrally formed products that are integrally formed by generation processing such as a press molding method.

  The first fixing portion 15B is provided on the front side of the seat of the tunnel portion 15A. The second fixed portion 15C is provided on the rear side of the seat of the tunnel portion 15A. The first fixed portion 15B is fixed to the movable rail 12 by a first fastening member 15D.

  The second fixed portion 15C is fixed to the movable rail 12 by a second fastening member 15E. The first fastening member 15D and the second fastening member 15E are fastening members configured by mechanical fastening members such as bolts and nuts.

3. Features of vehicle seat (especially slide device) according to this embodiment Since the link bracket 15 has a tunnel portion 15A that is curved so as to protrude upward, the bending rigidity and torsional rigidity of the link bracket 15 are improved. To do. Since the connecting pin 14 is displaced in the seat width direction with respect to the slide device 10, it is avoided that the lifter link 13 and the slide device 10 interfere even when the position of the lifter link 13 is low. obtain.

  Therefore, the vehicle seat 1 can reduce the height of the seat body 2 and can reduce the vertical displacement between the slide device 10 and the central axis Lo. As a result, the moment generated when a load in the seat width direction acts on the seat body 2 is reduced, so that the deformation of the vehicle seat 1 can be reduced. In other words, the rigidity of the vehicle seat 1 in the seat width direction can be improved.

  A first fastening member 15D and a second fastening member 15E for fixing the link bracket 15 to the slide device 10 are disposed on the front side of the tunnel portion 15A and the rear side of the tunnel portion 15A. Thereby, since it becomes the structure by which one side and the other side were fixed on both sides of the tunnel part 15A, the deformation | transformation of the link bracket 15 can be suppressed reliably.

  The link bracket 15 is fixed to the upper surface 12A of the movable rail 12, and the central axis Lo is at the same height as the upper surface 12A of the movable rail 12 or lower than the upper surface 12A. Thereby, since the gravity center position of the seat body 2 can be lowered, the rigidity in the seat width direction of the vehicle seat can be improved.

  By the way, after the main body portion 14C is inserted through the link bracket 15 and the lifter link 13, the main flange portion 14C is subjected to plastic processing such as caulking to form the second flange portion 14B. At the time of caulking, it is necessary to press the main body portion 14C so as to be sandwiched from one axial end side and the other axial end side.

  In the caulking process, a jig G1 (see FIG. 6) that presses or supports the first flange portion 14A side is necessary. In the present embodiment, since the tunnel portion 15A is provided, as shown in FIG. 6, the jig G1 and the link bracket 15 do not interfere during caulking.

  That is, in this embodiment, since it can enforce crimping processing, without providing a notch part etc., the link bracket 15 which concerns on this embodiment can obtain high rigidity compared with the invention of patent document 1. Can be.

(Other embodiments)
The link bracket 15 according to the above-described embodiment is fixed to the movable rail 12 with a mechanical fastener. However, the invention disclosed in this specification is not limited to this. That is, for example, the link bracket 15 may be fixed to the movable rail 12 by welding.

  In the above-described embodiment, the slide device 10 is exemplified as the pedestal. However, the invention disclosed in this specification is not limited to this. That is, for example, the pedestal may be configured by a member other than the slide device 10 such as a leg bracket.

  In the above-described embodiment, the link bracket 15 is fixed to the vehicle via the pedestal. However, the invention disclosed in this specification is not limited to this. In other words, the link bracket 15 may be directly fixed to the vehicle.

  In the above-described embodiment, the vehicle seat is applied to the vehicle. However, the application of the invention disclosed in the specification of the present application is not limited to this, and is also applied to seats used for vehicles such as railway vehicles, ships and aircraft, and stationary seats used for theaters, homes, etc. Applicable.

  Furthermore, the present disclosure is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims. Therefore, you may combine at least 2 embodiment among several embodiment mentioned above.

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Seat main body 3 ... Seat cushion 5 ... Seat back 10 ... Slide apparatus 11 ... Fixed rail 12 ... Movable rail 13 ... Lifter link 14 ... Connecting pin 14A ... 1st flange part 14B ... 2nd flange part 15 ... link bracket 15A ... tunnel part 15B ... first fixing part 15C ... second fixing part 15D ... first fastening member 15E ... second fastening member

Claims (4)

In vehicle seats mounted on vehicles,
A lifter link for moving the seat body up and down, the upper end side being swingably connected to the seat body, and the lower end side being swingably connected to the vehicle via a pedestal,
The lower end side of the lifter link is slidably connected via a connection pin, and is a link bracket fixed to the pedestal, and a portion above the central axis of the connection pin is convex upward. A link bracket having a tunnel portion curved to be,
The connection pin is a vehicle seat that is displaced in a seat width direction with respect to the pedestal. A first fastening member provided on the front side of the seat of the tunnel portion for fixing the link bracket to the pedestal;
The vehicle seat according to claim 1, further comprising: a second fastening member that is provided on a seat rear side of the tunnel portion and fixes the link bracket to the pedestal. The pedestal is a slide device having a movable rail slidable with respect to a vehicle,
The link bracket is fixed to the upper surface of the movable rail,
The vehicle seat according to claim 2, wherein the central axis is at the same height as the upper surface of the movable rail or at a height lower than the upper surface.   The vehicle seat according to claim 1, wherein an umbrella-shaped caulking portion that prevents the connecting pin from falling off the lifter link is provided on the connecting pin.

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