Slide rail device and vehicle seat

Abstract

To prevent a control lever from generating unintended dropping out of a lever bracket.SOLUTION: A slide rail device 20 comprises: a lower rail 24; an upper rail 26 supported slidably to the lower rail 24; a lock mechanism, which locks the slide; a lever bracket 42 supported rotatably to the upper rail 26 between a lock allowable position, which allows the lock, and an unlocking position, which unlocks the lock; a control lever 46 connected with the lever bracket 42 so as to be capable of rotating the lever bracket 42; a first stopper 64 mounted in the lever bracket 42 to engage the control lever 46 with the lever bracket 42; and a second stopper 66 mounted in the lever bracket 42 to engage the control lever 46 with the lever bracket 42.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a slide rail device provided in a vehicle seat. [Background technology]

[0002] Patent Document 1 listed below discloses a slide rail device for sliding a vehicle seat forward and backward to position it at a predetermined position. This slide rail device includes a lower rail, an upper rail slidably supported on the lower rail, a locking mechanism for locking the upper rail from sliding relative to the lower rail, a lever bracket supported on the upper rail rotatably between an allowable position for allowing the locking and an unlocked position for releasing the locking, an operating lever connected to the lever bracket, and a lever spring for pressing the operating lever. The operating lever has a groove that can be fitted with a bent portion provided on the lever bracket and an insertion portion into which a curved portion provided at the tip of the lever spring can be inserted. The curved portion of the lever spring is inserted into the insertion portion of the operating lever, thereby preventing the operating lever from coming off (locking) with the lever bracket. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-46812 Summary of the Invention [Problem to be solved by the invention]

[0004] In a slide rail device of the above configuration, if the dimensional accuracy between the curved portion of the lever spring and the insertion portion of the operating lever is low, there is a concern that the operating lever may fall off from the lever bracket if excessive inertial force acts on the operating lever during a vehicle collision.

[0005] SUMMARY OF THE INVENTION In consideration of the above, it is an object of the present invention to provide a slide rail device and a vehicle seat that can prevent an operating lever from accidentally falling off from a lever bracket. [Means for solving the problem]

[0006] The slide rail device of the first aspect includes a lower rail, an upper rail slidably supported on the lower rail, a locking mechanism that locks the slide, a lever bracket rotatably supported on the upper rail between a lock allowance position that allows the locking and an unlocking position that releases the locking, an operating lever rotatably connected to the lever bracket, a first stopper attached to the lever bracket that engages the operating lever to the lever bracket, and a second stopper attached to the lever bracket that engages the operating lever to the lever bracket.

[0007] In a first aspect of the slide rail device, a locking mechanism locks the upper rail from sliding relative to the lower rail. A lever bracket is rotatably supported on the upper rail, and an operating lever is connected to the lever bracket. When the operating lever is operated to rotate the lever bracket from the lock-permitting position to the unlocked position, the locking mechanism is released, allowing the upper rail to slide relative to the lower rail. The operating lever is engaged with the lever bracket by a first stopper and also by a second stopper. This prevents the operating lever from accidentally falling off the lever bracket even when excessive inertial force acts on the operating lever.

[0008] In the slide rail device of the second aspect, in the first aspect, the second stopper slides against an inclined surface provided on the lever bracket when the operating lever is connected to the lever bracket, elastically deforms, and then elastically returns to its original shape, and is engaged with an engaging portion formed on the operating lever.

[0009] According to the slide rail device of the second aspect, when the operating lever is connected to the lever bracket, the second stopper slides on the inclined surface provided on the lever bracket and elastically deforms. After elastically deforming, the second stopper elastically returns to its original shape and is locked to the locking portion formed on the operating lever. This allows the operating lever to be easily locked to the lever bracket by the second stopper.

[0010] A third aspect of the slide rail device is the second aspect, wherein the second stopper has a portion that slides against the inclined surface and is inclined in the same direction as the inclined surface.

[0011] In the slide rail device of the third aspect, the portion of the second stopper that slides against the inclined surface of the operating lever is inclined in the same direction as the inclined surface, which allows the operating lever to slide smoothly against the inclined surface, and therefore allows the second stopper to elastically deform smoothly when the operating lever is connected to the lever bracket.

[0012] The slide rail device of the fourth aspect is the second or third aspect, wherein the engaging portion is a through hole formed in the operating lever, and the tip portion of the second stopper is inserted into the through hole by the elastic return.

[0013] According to the slide rail device of the fourth aspect, when the operating lever is connected to the lever bracket, the second stopper, which has been elastically deformed by sliding against the inclined surface of the operating lever, elastically returns to its original position, and the tip of the second stopper is inserted into the through hole formed in the operating lever. In this way, the through hole formed in the operating lever is the locking portion, so that the locking portion can be easily formed.

[0014] A fifth aspect of the slide rail device is the fourth aspect, wherein the lower rail is connected to the floor of the vehicle body and the upper rail is connected to the seat cushion of the vehicle seat, and by sliding the upper rail and the seat cushion to one end of the sliding range of the upper rail relative to the lower rail, the through hole is exposed above the vehicle seat.

[0015] In the slide rail device of the fifth aspect, when the upper rail, to which the seat cushion of the vehicle seat is connected, slides toward one end of the sliding range relative to the lower rail, which is connected to the floor of the vehicle body, the through-hole formed in the operating lever is exposed above the vehicle seat, making it possible to release the insertion state of the tip of the second stopper from the through-hole with a tool or the like.

[0016] A sixth aspect of the vehicle seat includes a seat cushion, a seat back whose lower end is connected to the rear end of the seat cushion, and a slide rail device of any one of the first to fifth aspects, in which the seat cushion is connected to the upper rail and the lower rail is connected to the floor of the vehicle body.

[0017] In the vehicle seat of the sixth aspect, the lower rail of the slide rail device is connected to the floor of the vehicle body, the upper rail of the slide rail device is connected to the seat cushion, and the lower end of the seat back is connected to the rear end of the seat cushion. Since the above slide rail device is one of the first to fifth aspects, the same effects as any one of the above aspects can be obtained. [Effects of the Invention]

[0018] As described above, the slide rail device and vehicle seat according to the present invention can prevent the operating lever from accidentally falling off the lever bracket. [Brief explanation of the drawings]

[0019] [Figure 1]1 is a side view showing a vehicle seat according to an embodiment; [Figure 2] 1 is a perspective view showing a slide rail device according to an embodiment; [Figure 3] FIG. 1 is a plan view showing a slide rail device according to an embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a cut surface taken along line F3-F3 in FIG. [Figure 5] FIG. 5 is an enlarged cross-sectional view of a part of FIG. 4. [Figure 6] FIG. 5 is a cross-sectional view corresponding to FIG. 4, illustrating the operation of the operating lever. [Figure 7] FIG. 10 is a first cross-sectional view illustrating a method for connecting the operating lever to the lever bracket. [Figure 8] FIG. 10 is a second cross-sectional view illustrating a method for connecting the operating lever to the lever bracket. [Figure 9] FIG. 10 is a third cross-sectional view illustrating a method for connecting the operating lever to the lever bracket. [Figure 10] FIG. 10 is a fourth cross-sectional view illustrating a method for connecting the operating lever to the lever bracket. [Figure 11] FIG. 2 is a perspective view showing a part of the slide rail device according to the embodiment. [Figure 12] FIG. 6 is a cross-sectional view showing a part of the configuration shown in FIG. 5. [Figure 13] 13 is a cross-sectional view corresponding to FIG. 12, showing a modified example of the fixing structure of the second stopper. DETAILED DESCRIPTION OF THE INVENTION

[0020] A vehicle seat 10 according to one embodiment of the present invention will be described below with reference to Figures 1 to 13. Note that in each figure, some reference numerals may be omitted to make the drawings easier to understand. Arrows FR, LH, and UP, which are appropriately depicted in each figure, respectively indicate the front, left, and top of the vehicle seat 10. Hereinafter, when the front-rear, left-right, and up-down directions are simply used in the description, they will refer to the front-rear, left-right, and up-down directions of the vehicle seat 10 unless otherwise specified.

[0021] 1, a vehicle seat 10 according to this embodiment includes a seat cushion 12 on which a vehicle occupant sits, a seat back 14 that supports the occupant's back, a headrest 16 that supports the occupant's head, and a slide rail device 20 that connects the seat cushion 12 to a floor 18 of the vehicle body so that the seat cushion 12 can slide in the front-to-rear direction. The rear end of the seat cushion 12 is connected to the lower end of the seat back 14, and the headrest 16 is connected to the upper end of the seat back 14. The front-to-rear, left-to-right, and up-to-down directions of the vehicle seat 10 coincide with the front-to-rear, left-to-right, and up-to-down directions of the vehicle.

[0022] As shown in Figures 2 and 3, the slide rail device 20 includes a pair of left and right slide rails 22 and an operating lever 46. The left and right slide rails 22 are disposed below the left and right sides of the seat cushion 12. Each of the left and right slide rails 22 includes a lower rail 24 and an upper rail 26. The left and right lower rails 24 are connected (fixed here) to the floor 18 of the vehicle body via a pair of front and rear brackets 28, 30 (see Figure 1). The left and right upper rails 26 are connected (fixed here) to the seat cushion 12. Note that a configuration may be adopted in which a suspension device is provided between the left and right lower rails 24 and the floor 18. Furthermore, a configuration may be adopted in which a lifter mechanism is provided between the left and right upper rails 26 and the seat cushion 12.

[0023] The lower rail 24 and the upper rail 26 are manufactured, for example, by press-forming a steel plate, and have an elongated shape with the longitudinal direction as the longitudinal axis. The lower rail 24 has a substantially C-shaped cross section with an open upper side when viewed from the longitudinal direction. The upper rail 26 has a substantially hat-shaped (approximately Ω-shaped) cross section when viewed from the longitudinal direction. A portion of the upper rail 26 is inserted inside the lower rail. A plurality of ball retainers (not shown) are interposed between the lower rail 24 and the upper rail 26, and the upper rail 26 is supported so as to be slidable in the longitudinal direction relative to the lower rail 24.

[0024] 4, front and rear brackets 28, 30 are fixed to the lower wall portion 24A of the lower rail 24 using a plurality of rivets 32. A plurality of weld bolts 34 are fixed to the upper wall portion 26A of the upper rail 26. The seat cushion 12 is fixed to the upper rail 26 using these weld bolts 34. If a lifter mechanism is provided between the upper rail 26 and the seat cushion 12, a riser bracket, which is a component of the lifter mechanism, is fixed to the upper rail 26 using the weld bolts 34.

[0025] A locking mechanism 36 that locks the upper rail 26 against sliding relative to the lower rail 24, and a lever bracket 42 that is disposed between the locking mechanism 36 and an operating lever 46 are provided inside the upper rail 26. The locking mechanism 36 is disposed slightly rearward of the center of the upper rail 26 in the front-to-rear direction. The locking mechanism 36 includes a locking member 38, a pair of front and rear support pins 40, and a biasing member (here, a pair of front and rear compression coil springs) that is not shown.

[0026] The locking member 38 is manufactured, for example, by press-forming a steel plate, and has an inverted hat-shaped cross section when viewed from the left and right. Both front and rear ends of the locking member 38 are located above the front-rear middle part of the locking member 38. Front and rear support pins 40 pass through both front and rear ends of the locking member 38. The front and rear support pins 40 are cylindrical with their axes extending in the up-down direction, and are fixed to the upper wall portion 26A of the upper rail 26 by means of caulking or the like.

[0027] The front and rear support pins 40 hang downward from the upper wall portion 26A, and a lower flange portion (reference numeral omitted) is formed at the lower end of each support pin 40. The locking member 38 is supported by the front and rear support pins 40 so that it can slide up and down. Specifically, the locking member 38 is slidable up and down between a locked position shown in FIG. 4 and an unlocked position set below the locked position. Compression coil springs are respectively disposed between the lower flange portions of the front and rear support pins 40 and both front and rear ends of the locking member 38. Each compression coil spring is disposed coaxially with the corresponding support pin 40 and biases the locking member 38 upward, i.e., toward the locked position.

[0028] A plurality of teeth (not shown) are formed on both left and right ends of the locking member 38 in the middle of its longitudinal direction. When the locking member 38 is in the locked position, the plurality of teeth formed on the locking member 38 engage with a plurality of teeth 24B (see FIG. 2) formed on both left and right sides of the lower rail 24. This locks the upper rail 26 from sliding relative to the lower rail 24. When the locking member 38 is in the unlocked position, the engagement is released, allowing the upper rail 26 to slide relative to the lower rail 24.

[0029] The lever bracket 42 is disposed within the upper rail 26 on the front side relative to the locking member 38. The lever bracket 42 is manufactured, for example, by press-forming a steel plate, and is elongated in the front-to-rear direction. The lever bracket 42 has a pair of left and right side walls 42A (the left side wall 42A is not shown) that face each other in the left-to-right direction. Middle portions in the front-to-rear direction (middle portions in the longitudinal direction) of the left and right side walls 42A are supported by the upper rail 26 via a rotation shaft 44 whose axial direction is the left-to-right direction.

[0030] A pair of left and right engagement portions 42B are provided at the rear end portions of the left and right side walls 42A, which engage (contact) from above with the front-rear center portion of the locking member 38. The lower ends of the front portions of the left and right side walls 42A are connected in the left-right direction by a bottom wall 42C, whose thickness direction is the up-down direction. The bottom wall 42C extends further forward than the left and right side walls 42A. One of the left and right side walls 42A extends further forward than the other of the left and right side walls 42A. An opposing wall 42D extends from the front end of one of the side walls 42A, facing the bottom wall 42C from above with a gap therebetween. A vertical wall 42E extends upward from the rear end of the bottom wall 42C.

[0031] An operating lever 46 is connected to the lever bracket 42 configured as described above. As shown in Figures 2 to 4, the operating lever 46 is composed of a grip portion 48 that is gripped by the occupant, a pair of left and right lateral extension portions 50 that extend outward in the left and right direction from both left and right end portions of the grip portion 48, and a pair of left and right rear extension portions 52 that extend rearward from both left and right end portions of the pair of left and right lateral extension portions 50.

[0032] The gripping portion 48 is manufactured, for example, by bending a metal pipe material, and has a U-shape with an open rear side in a plan view. The left and right lateral extension portions 50 are manufactured, for example, by press-forming a steel plate, and have a plate-like shape with the plate thickness direction in the front-to-rear direction. The left and right ends of the gripping portion 48 are fixed to the inner left-to-right ends of the left and right lateral extension portions 50 by means of welding or the like. The left and right rear extension portions 52 are manufactured, for example, by press-forming a steel plate, and have an elongated shape with the longitudinal direction in the front-to-rear direction. Each rear extension portion 52 has a substantially U-shaped cross section with the lower side open when viewed from the front-to-rear direction.

[0033] The rear portions of the left and right rear extensions 52 are inserted from the front into the insides of the left and right upper rails 26. The rear portions of the left and right rear extensions 52 are inserted between the bottom wall 42C and the opposing wall 42D of the lever bracket 42, respectively, and the rear ends of the left and right rear extensions 52 abut against the vertical wall 42E of the lever bracket 42 from the front. As a result, the left and right rear extensions 52, i.e., the operating levers 46, are connected to the left and right lever brackets 42 within the left and right upper rails 26.

[0034] Each lever bracket 42 is provided with a first stopper 64 and a second stopper 66 for engaging (preventing removal of) the left and right rear extensions 52 with the corresponding lever bracket 42. The first stopper 64 is manufactured, for example, by press-molding a plate made of spring material and has an elongated shape with its longitudinal axis extending in the front-to-rear direction. The rear portion of the first stopper 64 forms a fixed portion 64A that is generally U-shaped with an open lower side when viewed from the front-to-rear direction. The fixed portion 64A is fitted from above to a middle portion of the lever bracket 42 in the front-to-rear direction. A rotating shaft 44 penetrates the left and right side walls of the fixed portion 64A, and the fixed portion 64A is fixed to the lever bracket 42 by the rotating shaft 44. An elastically deforming portion 64B extends obliquely downward and forward from the front end of the fixed portion 64A. The tip of the elastically deforming portion 64B is bent into a generally U-shape when viewed from the left and right direction.

[0035] As shown in FIG. 5 , a first locking hole 54 penetrating in the vertical direction is formed in the rear end of the rear extension portion 52 of the operating lever 46. When the rear end of the rear extension portion 52 abuts against the vertical wall 42E of the lever bracket 42, the tip of the elastically deforming portion 64B of the first stopper 64 is inserted into the first locking hole 54. This causes the rear extension portion 52, i.e., the operating lever 46, to be locked to the lever bracket 42 by the first stopper 64. The rear end of the rear extension portion 52 is bent obliquely downward. A first inclined surface 56 that slopes downward toward the rear side is formed on the upper surface of the rear end of the rear extension portion 52. When the operating lever 46 is connected to the lever bracket 42, the tip of the elastically deforming portion 64B slides against the first inclined surface 56. As a result, the elastically deforming portion 64B is elastically deformed upward and then elastically restored downward, so that the tip end of the elastically deforming portion 64B is inserted into the first locking hole .

[0036] The second stopper 66 is disposed forward of the first stopper 64. The second stopper 66 is manufactured by press-molding, for example, a plate made of spring material, and has an elongated shape with its longitudinal axis extending in the front-to-rear direction. The second stopper 66 has a plate-like shape with its thickness extending in the up-to-down direction. The rear portion of the second stopper 66 is superimposed on the upper surface of the lower wall portion 42C of the lever bracket 42 and is fixed to the lower wall portion 42C using a pair of rivets 68 at the front and rear. The front portion of the second stopper 66 extends forward beyond the lower wall portion 42C and is elastically deformable in the up-to-down direction. The front end of the second stopper 66 is provided with a bent portion 66A bent upward. The bent portion 66A is tilted slightly rearward relative to the up-to-down direction.

[0037] A second locking hole 60 is formed in the rear portion of the rear extension 52 of the operating lever 46, penetrating in the vertical direction, forward of the first locking hole 54. This second locking hole 60 corresponds to the "through hole" and "locking portion" of the present invention. When the rear end of the rear extension 52 abuts against the vertical wall 42E of the lever bracket 42, the upper end of the bent portion 66A of the second stopper 66 is inserted into the second locking hole 60. As a result, the second stopper 66 is caught in the second locking hole 60, and the rear extension 52, i.e., the operating lever 46, is locked to the lever bracket 42 by the second stopper 66. The area of ​​the rear extension 52 where the second locking hole 60 is formed is formed as a recess 58 that is recessed downward. When the rear extension 52 of the operating lever 46 is connected to the lever bracket 42, this recess 58 faces from below the weld bolt 34 fixed to the front end of the upper rail 26.

[0038] A second inclined surface 62 that slopes downward toward the front side is formed on the lower surface of the rear portion of the recess 58. This second inclined surface 62 corresponds to the "inclined surface" of the present invention. When the operating lever 46 is connected to the lever bracket 42, the upper end of the bent portion 66A of the second stopper 66 slides on the second inclined surface 62. As a result, the front portion of the second stopper 66 elastically deforms downward and then elastically returns upward, causing the upper end of the bent portion 66A to be inserted into the second locking hole 60. The bent portion 66A, i.e., the portion of the second stopper 66 that slides on the second inclined surface 62, is inclined in the same direction (downward toward the front) as the second inclined surface 62.

[0039] The lever bracket 42, to which the operating lever 46 is connected, is rotated from the lock allowance position shown by the solid line in FIG. 6 to the unlocked position shown by the two-dot chain line in FIG. 6 by the occupant operating the grip portion of the operating lever 46 upward. At this time, the recess 58 prevents interference between the weld bolt 34 and the rear extension portion 52. When the lever bracket 42 is rotated from the lock allowance position to the unlocked position, the lock member 38, which is engaged with the engagement portion 42B of the lever bracket 42, moves from the locked position shown in FIG. 4 to an unlocked position (not shown). This allows the left and right upper rails 26 to slide relative to the left and right lower rails 24, allowing the occupant to adjust the fore-and-aft position of the vehicle seat 10 relative to the vehicle floor 18. When the occupant stops operating the grip portion 48 of the operating lever 46, the biasing forces of the front and rear compression coil springs (not shown) move the lock member 38 from the unlocked position to the locked position, and the lever bracket 42 rotates from the unlocked position to the lock allowance position. As a result, the left and right upper rails 26 are locked again from sliding relative to the left and right lower rails 24.

[0040] 7 to 10 illustrate the state when the operating lever 46 is connected to the left and right lever brackets 42. During this connection, first, as shown in FIG. 7, the left and right rear extensions 52 of the operating lever 46 are tilted downward toward the rear, and the rear ends of the left and right rear extensions 52 are inserted between the bottom wall 42C and the opposing wall 42D of the left and right lever brackets 42. Then, as shown in FIGS. 8 to 10, the operating lever 46 is horizontally slid rearward (moved relative to the left and right lever brackets 42). During this sliding movement, the first stopper 64 and the second stopper 66 slide against the first inclined surface 56 and the second inclined surface 62 and elastically deform. Then, the first stopper 64 and the second stopper 66 elastically return to their original position, and the tip end of the elastically deforming portion 64B is inserted into the first locking hole 54, and the upper end of the bent portion 66A is inserted into the second locking hole 60 (see FIG. 11). When the upper rail 26 and the seat cushion 12 are slid to one end (here, the rear end) of the sliding range of the upper rail 26 relative to the lower rail 24, the second engagement hole 60 is exposed upward (i.e., becomes visible from above).

[0041] Next, the operation and effects of this embodiment will be described. In the vehicle seat 10 configured as described above, the lower end of the seat back 14 is connected to the rear end of the seat cushion 12, the seat cushion 12 is connected to the upper rail 26 of the slide rail device 20, and the lower rail 24 of the slide rail device 20 is connected to the floor 18 of the vehicle body.

[0042] In the slide rail device 20 described above, a locking mechanism 36 locks the upper rail 26 from sliding relative to the lower rail 24. A lever bracket 42 is rotatably supported on the upper rail 26, and an operating lever 46 is coupled to the lever bracket 42. When the operating lever 46 is operated to rotate the lever bracket 42 from the lock-permitting position to the unlocked position, the locking by the locking mechanism 36 is released. This allows the upper rail 26 to slide relative to the lower rail 24. The operating lever 46 is engaged with the lever bracket 42 by a first stopper 64, and is also engaged with the lever bracket 42 by a second stopper 66. This prevents the operating lever 46 from accidentally falling off the lever bracket 42 even when an excessively large inertial force acts on the operating lever 46.

[0043] Furthermore, in this embodiment, when the operating lever 46 is connected to the lever bracket 42, the bent portion 66A of the second stopper 66 slides on the second inclined surface 62 provided on the lever bracket 42, causing the second stopper 66 to elastically deform. After elastically deforming, the second stopper 66 elastically returns to its original state, and the tip of the bent portion 66A is inserted into and locked in the second locking hole 60 formed in the operating lever 46. This allows the operating lever 46 to be easily locked to the lever bracket 42 by the second stopper 66.

[0044] In this embodiment, the second stopper 66 has a bent portion 66A that slides against the second inclined surface 62 of the lever bracket 42, and is inclined in the same direction as the second inclined surface 62. This allows the bent portion 66A to slide smoothly against the second inclined surface 62, and therefore allows the second stopper 66 to be smoothly elastically deformed when the operating lever 46 is connected to the lever bracket 42.

[0045] Furthermore, in this embodiment, the locking portion of the operating lever 46 to which the bent portion 66A of the second stopper 66 is locked is the second locking hole 60 (through hole) formed in the extension portion 52. Therefore, when manufacturing the extension portion 52 of the operating lever 46, it is sufficient to form the second locking hole 60 through the extension portion 52, and therefore the locking portion can be easily formed.

[0046] In addition, in this embodiment, when the upper rail 26, to which the seat cushion 12 of the vehicle seat 10 is connected, slides toward one end (rear end) of the sliding range relative to the lower rail 24, which is connected to the floor 18 of the vehicle body, the second locking hole 60 formed in the operating lever 46 is exposed to the upper side of the vehicle seat 10. This makes it possible to release the insertion state of the tip of the bent portion 66A into the second locking hole 60 with a tool or the like, and the operating lever 46 can be easily removed from the lever bracket 42.

[0047] In addition, in this embodiment, because the bent portion 66A of the second stopper 66 is tilted backward in the up-down direction, the amount of protrusion H (see FIG. 12) of the bent portion 66A from the upper surface of the lower wall portion 42C of the lever bracket 42 can be made smaller than when the bent portion 66A stands vertically. This makes it possible to reduce interference between the rear end portion of the rear extension portion 52 and the second stopper 66 when the operating lever 46 is connected to the lever bracket 42.

[0048] While the above embodiment has been described in terms of a configuration in which the second stopper 66 is fixed to the lever bracket 42 using two rivets 68, this is not limiting and a configuration as shown in FIG. 13 may also be used. In the configuration shown in FIG. 13, the second stopper 66 is fixed to the lever bracket 42 using a single rivet 70. A rotation prevention portion 66B that is bent downward is formed at the rear end of the second stopper 66. This rotation prevention portion 66B is inserted into a rotation prevention hole 72 formed in the lower wall portion 42C of the lever bracket 42. This restricts relative rotation of the second stopper 66 around the rivet 70 with respect to the lever bracket 42.

[0049] Furthermore, in the above embodiment, the bent portion 66A of the second stopper 66 is configured to be tilted backward in the up-down direction, but this is not limiting, and the bent portion 66A may be configured to stand vertically.

[0050] Furthermore, in the above embodiment, the second engagement hole 60 (through hole) formed in the extension portion 52 of the operating lever 46 is described as the engagement portion, but this is not limited to this, and the engagement portion of the operating lever 46 may also be a step portion or the like formed in the extension portion 52.

[0051] Furthermore, in the above embodiment, the second inclined surface 62 is formed on the underside of the recess 58 formed in the rear extension portion 52 of the operating lever 46, but this is not limited to this, and the recess 58 and the second inclined surface 62 may be omitted.

[0052] In addition, the present invention can be implemented with various modifications within the scope of the gist thereof. Furthermore, it goes without saying that the scope of the rights of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0053] 10 Vehicle seats 12 seat cushions 14 Seat back 18 Floor 20 Slide rail device 24 Lower rail 26 Upper Rail 36 Locking mechanism 42 Lever bracket 46 Operating lever 60 Second locking hole (locking portion) 62 Second slope (slope) 64 First stopper 66 Second stopper

Claims

1. Lower rail and an upper rail slidably supported relative to the lower rail; a locking mechanism for locking the slide; a lever bracket supported rotatably with respect to the upper rail between a lock allowance position that allows the locking and an unlocking position that releases the locking; an operating lever connected to the lever bracket so as to be able to rotate the lever bracket; a first stopper attached to the lever bracket and configured to lock the operating lever to the lever bracket; a second stopper attached to the lever bracket and configured to lock the operating lever to the lever bracket; A slide rail device comprising:

2. 2. The slide rail device according to claim 1, wherein the second stopper slides against an inclined surface provided on the lever bracket when the operating lever is connected to the lever bracket, elastically deforms, and then elastically returns to its original shape, and is engaged with an engaging portion formed on the operating lever.

3. The slide rail device according to claim 2 , wherein the second stopper has a portion that slides against the inclined surface and is inclined in the same direction as the inclined surface.

4. the locking portion is a through hole formed in the operating lever, 4. The slide rail device according to claim 2, wherein the second stopper has a tip end inserted into the through hole by the elastic return.

5. The lower rail is connected to a floor portion of a vehicle body, The upper rail is connected to a seat cushion of a vehicle seat, 5. The slide rail device according to claim 4, wherein the through hole is exposed above the vehicle seat by sliding the upper rail and the seat cushion toward one end of a sliding range of the upper rail relative to the lower rail.

6. Seat cushion and a seat back having a lower end connected to a rear end of the seat cushion; 3. The slide rail device according to claim 1, wherein the seat cushion is connected to the upper rail and the lower rail is connected to a floor of a vehicle body; A vehicle seat comprising:

Images