Vehicle seat

Abstract

To provide a vehicle seat including a slide rail device capable of improving rigidity of a peeling inhibition member and inhibiting peeling between a movable rail and a fixed rail in a more effective manner.SOLUTION: A vehicle seat S includes: a seat cushion 1; and a slide rail device 60 disposed below the seat cushion 1. The slide rail device 60 includes: lower rails 61 fixed to a vehicle; upper rails 62 which may move along a direction in which the lower rails 61 extend; and peeling inhibition members 63 each of which inhibits the lower rail 61 and the upper rail 62 from peeling from each other. Each peeling inhibition member 63 is connected to the upper rail 62 and has a peeling inhibition bracket 631 which contacts with the lower rail 61 to inhibit the lower rail 61 and the upper rail 62 from peeling from each other when the upper rail 62 receives an impact load acting upward. The peeling inhibition bracket 631 has a recessed part 6311a which inhibits deformation of the peeling inhibition bracket 631.SELECTED DRAWING: Figure 9

Description

[Technical field]

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

[0002] In a conventional vehicle seat, a seat body including a seat cushion and a seat back is slidably attached to a vehicle floor via a slide rail device, so that an occupant can move to a destination by effectively utilizing the interior space of the vehicle by sliding the seat body in the direction in which the slide rail device extends.

[0003] Patent Document 1 describes a slide rail device that supports a seat body so that it can slide in the front-rear and left-right directions. More specifically, the slide rail device has a fixed rail fixed to the vehicle body, a movable rail that is slidable relative to the fixed rail, and a peeling prevention member for preventing the fixed rail and the movable rail from peeling off from each other. The peeling prevention member is composed of a bracket material that is connected to the movable rail and abuts against the fixed rail when an impact is applied from the outside, thereby preventing the movable rail from being displaced in a direction away from the fixed rail. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-248973 A Summary of the Invention [Problem to be solved by the invention]

[0005] The technology described in Patent Document 1 can prevent the movable rail from being displaced in a direction away from the fixed rail, and therefore can prevent the movable rail and the fixed rail from peeling off from each other. However, because the peeling prevention member was composed of a bracket made of a plate-shaped body, there was a risk that damage such as deformation would occur to the bracket when a large impact was applied, making it impossible to reliably prevent the movable rail and the fixed rail from peeling off from each other.

[0006] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a vehicle seat equipped with a slide rail device that improves the rigidity of the peel-prevention member and can more effectively suppress peeling between the movable rail and the fixed rail. [Means for solving the problem]

[0007] The above problem is solved by the vehicle seat of the present invention, which provides a vehicle seat including a seat cushion and a slide rail device arranged under the seat cushion, the slide rail device having a lower rail fixed to the vehicle, an upper rail movable along the direction in which the lower rail extends, and a peel-off suppression member that suppresses the lower rail and the upper rail from peeling off from each other, the peel-off suppression member having a peel-off suppression bracket that is connected to the upper rail and abuts against the lower rail when the upper rail is subjected to an upward impact load, thereby suppressing the upper rail and the lower rail from peeling off from each other, and the peel-off suppression bracket having a bracket reinforcement portion that suppresses deformation of the peel-off suppression bracket.

[0008] According to the above-mentioned configuration, the peel-inhibiting member has a peel-inhibiting bracket that is connected to the upper rail and abuts against the lower rail when the upper rail receives an upward impact load to prevent the upper rail and the lower rail from peeling off from each other. The peel-inhibiting bracket also has a bracket reinforcing portion that prevents deformation of the peel-inhibiting bracket. This improves the rigidity of the peel-inhibiting member and makes it possible to effectively prevent the upper rail (movable rail) and the lower rail (fixed rail) from peeling off from each other.

[0009] The bracket reinforcing portion may be located at a connecting portion with the upper rail. According to the above configuration, the rigidity of the anti-peeling member can be improved, effectively preventing the upper rail and the lower rail from peeling off, and the connecting strength between the upper rail and the anti-peeling member can be improved.

[0010] In addition, the upper rail may have a rail member that is movable along the direction in which the lower rail extends, and a support member that is provided on the rail member and supports the seat cushion, and the peel-off prevention bracket may be connected to the support member. According to the above-mentioned configuration, the impact load applied to the upper rail can be distributed to the support member and the rail member, thereby suppressing deformation of the rail member, and thus effectively suppressing separation between the rail member of the upper rail and the lower rail.

[0011] The bracket reinforcing portion may be located at a connecting portion with the support member. According to the above configuration, the rigidity of the anti-peeling member can be improved, effectively preventing the upper rail and the lower rail from peeling off, and the connecting strength between the upper rail and the anti-peeling member can be improved.

[0012] In addition, the peel-prevention bracket may have a side wall portion located in the seat width direction of the lower rail and the upper rail when viewed from the front, and a bottom wall portion extending and bending vertically from the side wall portion, and the bracket reinforcement portion may be a recess in the side wall portion recessed inward in the seat width direction. According to the above configuration, it is possible to prevent the size of the peeling-prevention bracket from increasing, while improving the rigidity of the peeling-prevention bracket by providing the recess recessed into the inside of the side wall.

[0013] In addition, the peel-prevention bracket has left and right side wall portions located on both sides of the lower rail and the upper rail in the seat width direction when viewed from the front, and a bottom wall portion connecting the bottoms of the left and right side wall portions to each other, and the support member is preferably clamped by the left and right side wall portions. According to the above configuration, it is possible to improve the connection strength between the upper rail and the peeling prevention bracket.

[0014] The peel-prevention member may have a connecting member that connects the left and right side wall portions of the peel-prevention bracket, and the peel-prevention bracket may be connected to the support member via the connecting member. According to the above-mentioned configuration, the peeling-prevention bracket can be easily connected to the support member by the connecting member, making it possible to suppress an increase in the number of steps for assembling the peeling-prevention member and to improve the mounting rigidity between the peeling-prevention bracket and the support member.

[0015] In addition, the peel-prevention bracket has left and right side wall portions located on both sides of the lower rail and the upper rail in the seat width direction when viewed from the front, and a bottom wall portion connecting the bottom portions of the left and right side wall portions to each other, and the fore-and-aft dimension of the upper portion of the peel-prevention bracket is preferably larger than the fore-and-aft dimension of the bottom portion. According to the above-mentioned configuration, since the dimension of the bottom in the front-rear direction is small, the weight of the peeling-prevention bracket can be reduced and the accumulation of foreign matter on the bottom of the peeling-prevention bracket can be suppressed. Also, it is possible to suppress interference between the peeling-prevention bracket and the fixing member attached to the lower rail when the upper rail slides in the front-rear direction.

[0016] In addition, it is preferable that the dimension of the separation-prevention bracket in the front-rear direction at the connecting portion with the support member is larger than the dimension of the portion other than the connecting portion in the front-rear direction. According to the above configuration, it is possible to reduce the weight of the peeling-prevention bracket while ensuring the connection strength between the upper rail and the peeling-prevention bracket.

[0017] The support member may further include a support member reinforcing portion at a portion where the support member is connected to the peeling suppression bracket, the support member reinforcing portion suppressing deformation of the support member. According to the above configuration, deformation of the support member is suppressed, so that the connecting strength of the peeling prevention bracket can be improved. Effect of the Invention

[0018] According to the present invention, it is possible to improve the rigidity of the separation prevention member and effectively prevent separation between the upper rail (movable rail) and the lower rail (fixed rail). Also, it is possible to improve the connection strength between the upper rail and the peeling prevention member. In addition, the stiffness of the peeling-prevention bracket can be improved by the recess recessed into the inside of the side wall while preventing the peeling-prevention bracket from becoming too large. In addition, the connection between the separation suppression bracket and the support member can be improved. In addition, the peeling-prevention bracket can be easily connected to the support member by the connecting member, making it possible to suppress an increase in the number of assembly steps for the peeling-prevention member. In addition, the weight of the peel-prevention bracket can be reduced, and foreign matter can be prevented from accumulating on the bottom of the peel-prevention bracket. Also, it is possible to prevent the peel-prevention bracket from interfering with the fixing member attached to the lower rail when the upper rail slides in the front-rear direction. Also, it is possible to reduce the weight of the peel-prevention bracket while ensuring the connection strength between the upper rail and the peel-prevention bracket. [Brief description of the drawings]

[0019] [Figure 1] 1 is a perspective view of a vehicle seat according to an embodiment of the present invention, as viewed obliquely from the front. [Diagram 2] FIG. 2 is a perspective view of the seat frame as seen obliquely from the front. [Diagram 3] FIG. 2 is a perspective view of the slide rail device as seen obliquely from the front. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. 2 is a side view of the slide rail with the peel-off suppression member attached thereto. [Figure 9] 9 is a cross-sectional view taken along line AA in FIG. 8. [Figure 10] 9 is a cross-sectional view of FIG. 8 taken along line B-B. [Figure 11] 13 is a cross-sectional front view of a slide rail device equipped with a peeling-inhibiting member according to a first modified example. FIG. [Figure 12] A cross-sectional view of a slide rail device equipped with a peeling-inhibiting member according to a second modified example, as viewed from the front. [Figure 13] 13 is a cross-sectional front view of a slide rail device equipped with a peeling-inhibiting member according to a third modified example. FIG. [Figure 14] A cross-sectional view of a slide rail device equipped with a peeling-inhibiting member according to a fourth modified example, as viewed from the front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The configuration of a vehicle seat according to an embodiment of the present invention (the present embodiment) will be described below with reference to the drawings. However, the embodiment described below is an example for making the present invention easier to understand, and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof.

[0021] In the following, a vehicle seat S provided in a vehicle automobile will be given as an example of a vehicle seat, and a configuration example thereof will be described. In the following description, the term "seat front-rear direction" refers to the front-rear direction of the vehicle seat S, which coincides with the traveling direction when the vehicle is traveling. The term "seat width direction" refers to the width direction of the vehicle seat S, which coincides with the left-right direction as seen by an occupant seated in the vehicle seat S. The term "up-down direction" refers to the up-down direction of the vehicle seat S, which coincides with the vertical direction when the vehicle is traveling on a horizontal plane. In addition, the outer and inner sides are defined based on the occupant. In other words, the direction toward the center of the seat width direction is the inner direction, and the direction away from it is the outer direction. A common number is given to a pair of left and right components, and when specifying the left and right, the name indicating the component is given the letters "left side" and "right side", and the symbol is given the letters "L" or "R".

[0022] As shown in Fig. 1, the vehicle seat S is a seat placed on the vehicle body floor and in which a vehicle occupant sits. In this embodiment, the vehicle seat S is a driver's seat arranged on the right side of the first row in the front-rear direction of the vehicle. However, the vehicle seat S is not limited to this, and may be a left seat (passenger seat) in the first row, or a seat in the second or third row.

[0023] <Vehicle seat S> The overall configuration of a vehicle seat S according to this embodiment will be outlined with reference to Fig. 1 to Fig. 3. Fig. 1 is a perspective view of the vehicle seat S according to this embodiment as viewed obliquely from the front, and Fig. 2 is a perspective view of a seat frame F as viewed obliquely from the front. Fig. 3 is a perspective view of a slide rail device 60. In FIG. 1, for convenience of illustration, a part of the vehicle seat S is shown with the cover material Tr removed and the pad material P exposed.

[0024] As shown in Fig. 1, a vehicle seat S according to this embodiment mainly comprises a seat cushion 1, a seat back 2, and a headrest 3. In the following description, the seat cushion 1, the seat back 2, and the headrest 3 may be collectively referred to as a seat body. 2, a seat frame F that forms the framework of the vehicle seat S is provided inside the vehicle seat S. The seat frame F includes a cushion frame 10, a back frame 20, and a headrest pillar 30 that respectively constitute a seat cushion 1, a seat back 2, and a headrest 3.

[0025] The vehicle seat S also includes a reclining device 40, a lifting device 50, and a slide rail device 60. The reclining device 40 connects the seat back 2 to the seat cushion 1 so as to be rotatable about a reclining shaft 41. The lifting device 50 and the slide rail device 60 are disposed below the seat cushion 1, and connect the seat body to the vehicle floor so as to be displaceable in the up-down and front-rear directions. In the following description, the reclining device 40, the lifting device 50, and the slide rail device 60 may be referred to as a movable mechanism.

[0026] <Seat cushion 1> The seat cushion 1 is a support member for supporting the buttocks of a seated occupant (hereinafter, sometimes referred to as a seated person) and supports the seated person from below. The seat cushion 1 mainly includes a cushion frame 10 that forms the framework of the seat cushion 1, a pad material P that covers the cushion frame 10, and a cover material Tr.

[0027] The cushion frame 10 is a frame body having a rectangular shape when viewed from above. The cushion frame 10 includes left and right cushion side frames 11, a pan frame 12 connecting the left and right cushion side frames 11, a rear frame 13, and S-springs 14.

[0028] The left and right cushion side frames 11 are made of plate-like members extending in the front-rear direction and are disposed on both sides in the seat width direction while facing each other and spaced apart from each other. A lifting / lowering operation lever 53 for operating a lifting device 50 (described later) is provided on the side of the cushion side frame 11. The pan frame 12 is made of a plate-like member that connects the front ends of the left and right cushion side frames 11. The rear frame 13 is made of a round pipe material that connects the rear ends of the left and right cushion side frames 11.

[0029] The S springs 14 are stretched across the pan frame 12 and the rear frame 13, and function as pressure-receiving members that receive the load of a seated occupant. More specifically, the S springs 14 are elastic members that deform while being displaced downward when a seated occupant sits on the vehicle seat S, and receive the load of the seated occupant. However, the pressure-receiving members are not limited to the S springs 14. Instead of the S springs 14, elastic plate-shaped members may be stretched across the pan frame 12 and the rear frame 13.

[0030] A padding material P for a seat cushion is placed on the cushion frame 10, and the padding material P is covered with a skin material Tr. The padding material P is a cushioning material, and is made of, for example, a urethane resin (foamed resin) such as soft polyurethane foam. The padding material P may be made of biomass urethane. The skin material Tr that covers the padding material P is made of, for example, a synthetic leather material having elasticity. The skin material Tr may be made of cloth, film, leather, or the like.

[0031] <Seat back 2> The seat back 2 is a support member that supports the back of a seated occupant from behind. As shown in Fig. 2, the seat back 2 mainly includes a back frame 20 that forms the framework of the seat back 2, a padding material P that covers the back frame 20, and a skin material Tr.

[0032] The back frame 20 is a frame body having a substantially rectangular shape when viewed from the front. The back frame 20 mainly comprises left and right back side frames 21, a back upper frame 22, a back lower frame 23, a connecting frame 24, and S-springs 25. The left and right back side frames 21, the back upper frame 22, and the back lower frame 23 are integrally formed from round pipe materials.

[0033] The left and right back side frames 21 are elongated frame members extending in the vertical direction and disposed apart from each other on both sides in the seat width direction. The back side frames 21 are rotatably connected to the rear ends of the cushion side frames 11 by the reclining device 40.

[0034] The back upper frame 22 connects the upper ends of the left and right back side frames 21 and has a generally inverted U-shape. In other words, the back upper frame 22 extends upward from both sides in the seat width direction toward the center while inclining. The back upper frame 22 also has a pair of headrest support parts 22a in the center in the seat width direction, into which the headrest pillars 30 can be inserted. On the other hand, the back lower frame 23 connects the lower ends of the left and right back side frames 21 together.

[0035] The connecting frame 24 is a plate-like member that is located between the back upper frame 22 and the back lower frame 23 in the up-down direction and connects the left and right back side frames 21 together. The S spring 25 is disposed between the left and right back side frames 21 and functions as a pressure-receiving member that receives the load of a seated occupant. The S spring 25 is an elastic member that deforms in response to the back and waist of an occupant seated in the vehicle seat S.

[0036] <Headrest 3> The headrest 3 is a support member that supports the head of a seated occupant from behind. The headrest 3 has a headrest pillar 30 that forms the framework of the headrest 3, a padding material (not shown) that covers the headrest pillar 30, and a skin material Tr that covers the padding material. The headrest 3 is attached to the seat back 2 by inserting a headrest pillar 30 into the headrest support portion 22 a of the back frame 20 .

[0037] <Reclining device 40> The reclining device 40 rotatably connects the seat back 2 to the seat cushion 1. More specifically, the reclining device 40 rotatably connects the rear end of the cushion side frame 11 and the lower end of the back side frame 21. This allows the vehicle seat S to transition between a normal state in which the seat back 2 stands upright relative to the seat cushion 1, a reclined state in which the seat back 2 is tilted backward, and a folded state in which the seat back 2 is folded forward.

[0038] <Lifting device 50> 2, the lifting device 50 is disposed between the seat cushion 1 and the slide rail device 60, and lifts and lowers the seat body relative to the vehicle floor. More specifically, the lifting device 50 mainly includes a front lifting link 51, a rear lifting link 52, and a lifting operation lever 53. The front lift link 51 and the rear lift link 52 are long and made of a pair of left and right plate-like bodies. The front lift link 51 and the rear lift link 52 have a lower rotation shaft located at the lower end and an upper rotation shaft located at the upper end, and are rotatably connected to the slide rail device 60 and the seat cushion 1 via the lower rotation shaft and the upper rotation shaft, respectively.

[0039] The operation of the lifting device 50 configured as above will be described. An occupant of the vehicle seat S can rotate the rear lifting link 52, which corresponds to the driven link member, so as to stand up or lie down by operating the lifting operation lever 53. At this time, the front lifting link 51, which corresponds to the driven link, rotates in conjunction with the rear lifting link 52. This allows the seat body to be smoothly displaced in the up-down direction relative to the vehicle floor without tilting in the front-rear direction.

[0040] <Slide rail device 60> The slide rail device 60 is provided below the seat body and connects the seat body to the vehicle floor so that the seat body can slide in the front-rear direction. The slide rail device 60 has a left slide rail device 60L located on the left side in the seat width direction and a right slide rail device 60R located on the right side. In the following description, when there is no need to particularly distinguish between the left slide rail device 60L and the right slide rail device 60R, they will be simply referred to as the slide rail device 60.

[0041] 3, the slide rail device 60 mainly comprises a lower rail 61 fixed to the vehicle body floor, an upper rail 62 slidable relative to the lower rail 61, and a separation prevention member 63 that prevents the lower rail 61 and the upper rail 62 from separating from each other. Although not shown in the figures, the right slide rail device 60R further comprises a slide rail lock device (not shown) that restricts the sliding of the upper rail 62 relative to the lower rail 61.

[0042] The lower rail 61 has a lower rail main body 611 which is a long rail body extending in the front-rear direction and is fixed to the vehicle floor by a front fixed leg and a rear fixed leg. More specifically, the lower rail main body 611 has a substantially U-shape when viewed from the front, and mainly includes left and right side wall portions 6111 and a bottom wall portion 6112 connecting the lower ends of the left and right side wall portions 6111.

[0043] The upper rail 62 is a sliding body that supports the seat body and slides in the front-rear direction relative to the lower rail 61. The upper rail 62 mainly includes an upper rail body 621 and a support member 622 (see FIG. 9). The upper rail main body 621 is a long rail body extending in the front-rear direction. More specifically, the upper rail main body 621 has a generally inverted U-shape when viewed from the front, and has left and right side wall portions 6211 and an upper wall portion 6212 connecting the upper ends of the left and right side wall portions 6211. The upper rail main body 621 corresponds to the rail member of the present invention.

[0044] When the lower rail 61 and the upper rail 62 are engaged with each other, the upper ends of the side walls 6111 of the lower rail main body 611 are positioned higher than the lower ends of the left and right side walls 6211 of the upper rail main body 621. This prevents the upper rail 62 from being misaligned with respect to the lower rail 61 in the seat width direction.

[0045] In addition, left and right ball rolling elements 66 and a central cylindrical rolling element 67 are interposed between the lower rail main body 611 and the upper rail main body 621. The ball rolling elements 66 and the cylindrical rolling element 67 roll between the lower rail main body 611 and the upper rail main body 621, thereby reducing the frictional force between them. This allows the upper rail main body 621 to slide smoothly relative to the lower rail main body 611.

[0046] The support member 622 is fixed onto the upper rail main body 621 and serves to support the seat main body via the lifting device 50. The support member 622 has a substantially U-shape in front view, and has a bottom wall portion 6221, a front lifting link connecting portion 6222, a rear lifting link connecting portion 6223, an inner peeling suppression member fixing portion 6224, and an outer peeling suppression member fixing portion 6225.

[0047] The bottom wall portion 6221 has an elongated shape extending in the front-rear direction, and is fixed in contact with the top wall portion 6212 of the upper rail main body 621 . The front lifting link connection part 6222 and the rear lifting link connection part 6223 are upright walls that stand up from the bottom wall part 6221 and support the lifting device 50. The front lifting link connection part 6222 is located on the front side of the support member 622 and has an insertion hole through which the lower rotation shaft of the front lifting link 51 is inserted. Therefore, the front lifting link connection part 6222 can rotatably connect and support the front lifting link 51. On the other hand, the rear lift link connecting portion 6223 is located on the rear side of the support member 622, and has an insertion hole through which the lower rotation shaft of the rear lift link 52 is inserted. Therefore, the rear lift link connecting portion 6223 can rotatably connect and support the rear lift link 52.

[0048] The inner peeling suppressing member fixing portion 6224 and the outer peeling suppressing member fixing portion 6225 are upright walls that stand up from the bottom wall portion 6221, and are connected to the peeling suppressing member 63 described below. To explain in more detail, the inner peeling suppressing member fixing portion 6224 and the outer peeling suppressing member fixing portion 6225 are each formed with two inner fixing holes 6224a and two outer fixing holes 6225a for fastening and fixing the peeling suppressing member 63. A bracket connecting member 632 for fixing the peeling suppressing member 63 to the support member 622 is inserted into the inner fixing holes 6224a and the outer fixing holes 6225a.

[0049] As described later, the inner peel-preventing member fixing portion 6224 and the outer peel-preventing member fixing portion 6225 are press-formed and plastically deformed so as to bulge in directions away from each other. This improves the strength of the inner peel-preventing member fixing portion 6224 and the outer peel-preventing member fixing portion 6225, and enables the peel-preventing member 63 to be firmly fixed to the upper rail 62. This makes it possible to effectively prevent the lower rail 61 and the upper rail 62 from peeling off from each other.

[0050] The peel-inhibiting member 63 has a substantially U-shape in front view, with its left and right upper ends connected to the inner peel-inhibiting member fixing portion 6224 and the outer peel-inhibiting member fixing portion 6225, and its lower end located below the bottom wall portion 6112 of the lower rail 61. Therefore, even if the upper rail 62 receives a large impact load in the upward direction from the road surface while traveling, the lower end of the peel-inhibiting member 63 abuts against the lower rail 61, thereby preventing the lower rail 61 and the upper rail 62 from peeling off from each other.

[0051] As will be described later, the peel-inhibiting member 63 has a reinforcing portion that is deformed in the seat width direction by press working. This improves the rigidity of the peel-inhibiting member 63 against impact loads in the vertical direction. Therefore, even if the upper rail 62 receives a strong impact load in the upward direction, the peel-inhibiting member 63 can be prevented from being damaged, such as being deformed, and it is possible to effectively prevent the lower rail 61 and the upper rail 62 from peeling off from each other. Details of the peel-inhibiting member 63 will be described later.

[0052] <<Peeling prevention member 63>> Next, the peeling-inhibiting member 63 will be described with reference to Fig. 4 to Fig. 7. Fig. 4, Fig. 5, Fig. 6 and Fig. 7 are a cross-sectional view seen from the front, a left side view, a top view and a bottom view of the peeling-inhibiting member 63, respectively. While a vehicle is traveling, it may be subjected to an impact load from below to above due to the influence of unevenness of the road surface, external forces from the surroundings, etc. In this case, there is a risk that the lower rail 61 and the upper rail 62 may peel off from each other, or the slide rail device 60 may be damaged, such as deformed. For this reason, the peeling prevention member 63 is attached to the slide rail device 60 so as to encase the lower rail 61 and the upper rail 62, and prevents the lower rail 61 and the upper rail 62 from peeling off from each other.

[0053] 4 to 7, the peeling preventive member 63 includes a peeling preventive bracket 631 and a bracket connecting member 632. The peeling preventive bracket 631 is a plate-like body having a substantially U-shape when viewed from the front. In more detail, the peeling preventive bracket 631 includes left and right side wall portions 6311 and a bottom wall portion 6312 connecting lower ends of the left and right side wall portions 6311. The left and right sidewalls 6311 extend in the up-down direction and have recesses 6311a recessed inward so that the left and right sidewalls 6311 approach each other. In this way, by forming the recesses 6311a that deform in the sheet width direction in the left and right sidewalls 6311, it is possible to suppress deformation of the peeling suppression bracket 631 in the up-down direction. In addition, by deforming the left and right sidewalls 6311 so as to approach each other, it is possible to sandwich the support member 622 of the upper rail 62 between the left and right sidewalls 6311 (see FIG. 9), and it is possible to improve the connection strength between the upper rail 62 and the peeling suppression member 63. The recesses 6311a correspond to the bracket reinforcing portion of the present invention.

[0054] The recess 6311a is formed with an insertion hole 6311b through which the bracket connection member 632 is inserted. As described below, the peeling preventive bracket 631 is connected to the support member 622 by the left and right recesses 6311a with increased rigidity abutting against the inner peeling preventive member fixing portion 6224 and the outer peeling preventive member fixing portion 6225 of the support member 622. This makes it possible to improve the connection strength between the upper rail 62 and the peeling preventive bracket 631.

[0055] The bottom wall portion 6312 has a flat portion 6312a extending in the sheet width direction, and inclined portions 6312b extending upwardly while inclining from both ends of the flat portion 6312a and connecting to the lower ends of the side wall portions 6311. A through hole 6312c that passes through the flat portion 6312a in the up-down direction is formed on the front side of the flat portion 6312a, which makes it possible to prevent foreign matter such as dust from accumulating on the upper surface of the flat portion 6312a.

[0056] 5, a notch 6311c is formed on the lower side of the side wall 6311, which is cut from the rear to the front. In other words, the dimension of the upper part of the peeling preventive bracket 631 in the front-rear direction is larger than the dimension of the bottom part (flat part 6312a) of the peeling preventive bracket 631 in the front-rear direction. This makes it possible to reduce the weight of the peeling preventive member 63 and to prevent foreign matter such as dust from accumulating on the upper surface of the flat part 6312a. In addition, it is possible to prevent the flat part 6312a from interfering with other members (for example, the rear fixed leg) when the upper rail 62 is slid in the front-rear direction relative to the lower rail 61.

[0057] The bracket connecting member 632 is used to fasten and fix the peeling preventive bracket 631 to the support member 622 of the upper rail 62. More specifically, the bracket connecting member 632 has a front connecting member 6321 and a rear connecting member 6322 that fasten the left and right side wall portions 6311 of the peeling preventive bracket 631 to the inner peeling preventive member fixing portion 6224 and the outer peeling preventive member fixing portion 6225. The front connecting member 6321 and the rear connecting member 6322 are composed of a bolt and a nut that screws onto the bolt. Therefore, the peeling preventive bracket 631 can be easily connected to the support member 622, and an increase in the number of steps for assembling the slide rail device 60 can be suppressed. In addition, the front connection member 6321 and the rear connection member 6322 are arranged side by side in the front-rear direction, thereby improving the connection strength between the upper rail 62 and the peeling prevention bracket 631.

[0058] Figures 8 to 10 show the slide rail device 60 with the peeling suppression member 63 attached. Specifically, Figures 8 to 10 show the slide rail device 60 with the peeling suppression member 63 attached. Specifically, Figure 8 shows a side view of the slide rail device 60, Figure 9 shows a cross-sectional view taken along line AA in Figure 8, and Figure 10 shows a cross-sectional view taken along line BB in Figure 8. 8, the peeling-prevention member 63 is attached to the support member 622 of the upper rail 62 so as to enclose the bottom wall portion 6112 of the lower rail 61 from below. Therefore, when an impact load is applied to the upper rail 62 such that it thrusts upward from below, the peeling-prevention member 63 comes into contact with the lower surface of the bottom wall portion 6112 of the lower rail 61, thereby preventing the lower rail 61 and the upper rail 62 from peeling off from each other.

[0059] Further, recesses 6311a are formed on the left and right side walls 6311 of the peeling prevention bracket 631 to sandwich and abut the inner peeling prevention member fixing portion 6224 and the outer peeling prevention member fixing portion 6225. The recesses 6311a are deformed to be recessed inward in the seat width direction so that the left and right side walls 6311 approach each other. Therefore, the rigidity of the side walls 6311 is improved, particularly in the vertical direction, and peeling between the lower rail 61 and the upper rail 62 can be effectively suppressed. Moreover, the recess 6311a is located above the upper rail main body 621 and does not overlap with the upper rail main body 621 in the sheet width direction. Therefore, it is possible to prevent the peeling suppression member 63 and the upper rail main body 621 from interfering with each other.

[0060] 10, the inner peeling suppression member fixing portion 6224 and the outer peeling suppression member fixing portion 6225 of the support member 622 are processed so as to protrude to the left and right. More specifically, the inner peeling suppression member fixing portion 6224 is located between the inner front bulging portion 6224b and the inner rear bulging portion 6224c in the front-rear direction, and is processed so as to bulge toward the left side of FIG. 10 in the seat width direction, and is plastically deformed. On the other hand, the outer peeling suppression member fixing portion 6225 is located between the outer front bulging portion 6225b and the outer rear bulging portion 6225c in the front-rear direction, and is processed so as to bulge toward the right side of FIG. 10 in the seat width direction, and is plastically deformed. This improves the rigidity of the inner peeling suppression member fixing portion 6224 and the outer peeling suppression member fixing portion 6225, and makes it possible to improve the connection strength between the upper rail 62 and the peeling suppression member 63. The inner front bulge 6224b, the inner rear bulge 6224c, the outer front bulge 6225b, and the outer rear bulge 6225c correspond to support member reinforcement parts.

[0061] In addition, the inner peeling suppression member fixing portion 6224 and the outer peeling suppression member fixing portion 6225 of the support member 622 are connected to recesses 6311a formed in the side wall portion 6311 while being sandwiched from both sides in the sheet width direction by the side wall portion 6311 of the peeling suppression bracket 631. Therefore, it is possible to improve the connection strength between the upper rail 62 and the peeling suppression member 63. An extension portion 6224d that bends and extends inward (to the right) in the sheet width direction is formed at the upper end of the inner peeling suppression member fixing portion 6224. The extension portion 6224d is located above the side wall portion 6311 of the peeling suppression bracket 631 and covers the side wall portion 6311 from above. Therefore, the inner peeling suppression member fixing portion 6224 prevents impact from being applied to the peeling suppression bracket 631 from above, and protects the peeling suppression member 63.

[0062] In addition, the bracket connecting member 632 is located below the cushion side frame 11 and is disposed opposite the cushion side frame 11 in the up-down direction (see FIG. 2). Therefore, it is possible to prevent the bracket connecting member 632 from receiving a large impact from above.

[0063] 8, a notch 6311c is formed at the rear of the lower end of the side wall 6311 of the peeling preventive bracket 631. Therefore, in the peeling preventive bracket 631, the front-rear dimension of the connecting portion (upper portion) that connects to the support member 622 is larger than the front-rear dimension of the portion other than the connecting portion (lower portion). Therefore, it is possible to prevent the rear of the lower end of the peeling preventive bracket 631 from interfering with other members (for example, the rear fixed leg of the lower rail 61) when the upper rail 62 slides in the front-rear direction.

[0064] As described above, the peeling-inhibiting member 63 is connected to the left and right side wall portions 6311 of the upper rail 62 so as to enclose the bottom wall portion 6112 of the lower rail 61 from below, and has the recesses 6311a that improve the vertical rigidity of the peeling-inhibiting member 63. Therefore, the peeling-inhibiting member 63 can effectively prevent the lower rail 61 and the upper rail 62 from peeling off from each other.

[0065] <Manufacturing method of vehicle seat S> Next, a manufacturing method of the vehicle seat S will be described. First, the slide rail device 60 is assembled. Specifically, after the lower rail 61 and the upper rail 62 are assembled separately, the lower rail 61 and the upper rail 62 are assembled by engaging the upper rail body 621 of the upper rail 62 with the lower rail body 611 of the lower rail 61. Next, the peeling suppression member 63 is connected to the support member 622 of the upper rail 62. Specifically, in a state in which the left and right side wall portions 6311 of the peeling suppression bracket 631 are spread out to the left and right, the peeling suppression bracket 631 is assembled so as to enclose the lower rail 61 and the upper rail 62 from below and to sandwich the support member 622 from both the left and right sides. Next, the peeling suppression bracket 631 is fastened and fixed to the support member 622 by the bracket connecting member 632. As a result, the peeling suppression member 63 is connected to the upper rail 62.

[0066] Next, the seat body is assembled. Specifically, first, the padding material P is placed on the cushion frame 10 and the back frame 20 that constitute the seat frame F, and then covered with the covering material Tr. Next, the headrest 3 is attached to the seat back 2, thereby assembling the seat body. Finally, the lifting device 50 is attached to the slide rail device 60, and the seat body is attached to the lifting device 50, thereby completing the manufacture of the vehicle seat S.

[0067] Although the vehicle seat S according to one embodiment of the present invention has been described above, the above-described embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof.

[0068] <First Modification> In the above-described embodiment, the recess 6311a is formed in the side wall 6311 of the peel-prevention bracket 631, but this is not limiting. The protrusion 6311d may be formed in the side wall 6311. Even in this case, it is possible to prevent the lower rail 61 and the upper rail 62 from peeling away from each other, and to improve the rigidity of the peel-prevention member 63, as in the above-described embodiment.

[0069] Fig. 11 is a cross-sectional view of a slide rail device 60 to which a peeling preventive member 63A according to a first modified example is attached, as viewed from the front. As shown in Fig. 11, the peeling preventive member 63A has a peeling preventive bracket 631A and a bracket connecting member 632. The peeling preventive bracket 631A is a plate-like body having a substantially U-shape in a front view. More specifically, the peeling preventive bracket 631A has left and right side wall portions 6311 and a bottom wall portion 6312 connecting lower ends of the left and right side wall portions 6311.

[0070] The left and right side walls 6311 are provided with protruding portions 6311d that abut against the inner peeling suppression member fixing portion 6224 and the outer peeling suppression member fixing portion 6225 of the support member 622 and protrude outward in the sheet width direction. The protruding portions 6311d are plate-shaped members extending in the up-down direction. Therefore, the protruding portions 6311d can improve the rigidity of the peeling suppression bracket 631 and suppress deformation of the peeling suppression bracket 631 in the up-down direction. In Fig. 11, one protrusion 6311d is provided on each of the left and right side wall portions 6311, but this is not limited thereto. A plurality of protrusions 6311d may be provided on each of the left and right side wall portions 6311. By providing a plurality of protrusions 6311d on each of the left and right side wall portions 6311, it is possible to further improve the rigidity of the peeling suppression bracket 631A. In addition, the left and right side wall portions 6311 may be provided with plate thickening portions for improving strength. The protrusions 6311d correspond to bracket reinforcing portions.

[0071] <Second Modification> In the above embodiment, the peeling prevention bracket 631 has been described as having a substantially U-shape in front view, but is not limited thereto. The peeling prevention bracket 631 may have a substantially L-shape in front view. Even in this case, it is possible to prevent the lower rail 61 and the upper rail 62 from peeling away from each other, as in the above embodiment, and to improve the rigidity of the peeling prevention member 63.

[0072] Fig. 12 is a cross-sectional view of a slide rail device 60 to which a peeling preventive member 63B according to a second modified example is attached, as viewed from the front. As shown in Fig. 12, the peeling preventive member 63B has a peeling preventive bracket 631B and a bracket connecting member 632. The peeling preventive bracket 631B is a plate-like body having a substantially L-shape in a front view. In more detail, the peeling preventive bracket 631B has a side wall portion 6311 and a bottom wall portion 6312 that is bent vertically at a lower end of the side wall portion 6311 and extends below the bottom wall portion 6112 of the lower rail 61 in the seat width direction.

[0073] The side wall 6311 is provided with a recess 6311a that comes into contact with the outer peeling suppressing member fixing portion 6225 of the support member 622 and deforms in the sheet width direction toward the support member 622. By forming the recess 6311a that deforms in the sheet width direction in the side wall 6311 in this way, the rigidity of the peeling suppressing bracket 631B can be improved and the peeling suppressing bracket 631B can be prevented from deforming in the up-down direction. In addition, by making the peeling suppressing bracket 631B substantially L-shaped in front view, it is possible to realize a reduction in weight of the peeling suppressing member 63B compared to the above-mentioned embodiment.

[0074] <Third Modification> FIG. 13 is a cross-sectional view of a slide rail device 60 to which left and right peeling suppression members 63C according to the third modified example are attached, as viewed from the front. As shown in FIG. 13, the left and right peeling suppression members 63C are plate-like bodies having a substantially C-shape in a front view. In more detail, the peeling suppression bracket 631C has a side wall portion 6311, a bottom wall portion 6312, and an upper wall portion 6313. The bottom wall portion 6312 is bent vertically from the lower end of the side wall portion 6311 and extends in the seat width direction below the lower rail 61. The upper wall portion 6313 is bent vertically from the upper end of the side wall portion 6311 and extends in the seat width direction above the upper rail main body 621. Even in such a case, it is possible to achieve the same effect as the above-mentioned embodiment. In addition, since the bracket connection member 632 is not necessary, it is possible to reduce the number of parts compared to the above-mentioned embodiment.

[0075] <Fourth modified example> In the above embodiment, the peeling prevention bracket 631 is attached to the support member 622 of the upper rail 62 via the bracket connecting member 632, but the present invention is not limited to this. The peeling prevention bracket 631 may be attached to the upper rail 62 by welding. Even in such a case, it is possible to prevent the lower rail 61 and the upper rail 62 from peeling away from each other, and to improve the rigidity of the peeling prevention member 63, as in the above embodiment.

[0076] Fig. 14 is a cross-sectional view of a slide rail device 60 to which a peeling suppressing member 63D according to a fourth modified example is attached, as viewed from the front. As shown in Fig. 14, a peeling suppressing bracket 631D constituting the peeling suppressing member 63D is a plate-like body having a substantially U-shape in a front view. In more detail, the peeling suppressing bracket 631D has left and right side wall portions 6311 and a bottom wall portion 6312 connecting the lower ends of the left and right side wall portions 6311.

[0077] The left and right sidewalls 6311 are formed with recesses 6311a that come into contact with the left and right sidewalls 6211 of the upper rail 62 and deform in the seat width direction to approach the upper rail main body 621. In this way, by forming the recesses 6311a that deform in the seat width direction in the left and right sidewalls 6311, the rigidity of the peeling preventive bracket 631D is improved, and it is possible to prevent the peeling preventive bracket 631D from deforming in the up-down direction. Moreover, the left and right recesses 6311a are welded to the left and right side wall portions 6211 of the upper rail main body 621. Therefore, deformation of the peeling preventive bracket 631D at the welded portion can be more effectively prevented, and the connection strength between the upper rail 62 and the peeling preventive bracket 631D can be increased.

[0078] In the above-described embodiment, the vehicle seat S mounted on a vehicle is given as an example of a vehicle seat, and an example of the configuration thereof is described. However, the present invention is not limited to seats mounted on vehicles that have wheels and run on land, such as automobiles and trains, and may also be applied to seats mounted on aircraft, ships, and other vehicles that move on non-ground surfaces, for example. [Explanation of symbols]

[0079] S Vehicle seats (vehicle seats) Seat frame, front P Pad material Tr skin material 1 seat cushion 2 Seat back 3 Headrest 10 Cushion Frame 11 Cushion side frame 12 Pan Frame 13 Rear frame 14 S spring 20 Back Frame 21 Backside Frame 22 Back upper frame 22a Headrest support 23 Back lower frame 24 Connecting Frame 25 S spring 30 Headrest pillar 40 Reclining device 41 Reclining axis 50 Lifting device 51 Front lift link 52 Rear lifting link 53 Lifting lever 60 Slide rail device 60L left slide rail device 60R Right Slide Rail Device 61 Lower rail 611 Lower rail body 6111 Side wall 6112 Bottom wall 62 Upper Rail 621 Upper rail body (rail component) 6211 Side wall 6212 Upper wall section 622 Support member 6221 Bottom wall 6222 Front lift link connection 6223 Rear lift link connection part 6224 Inner peeling prevention member fixing part 6224a Inner fixing hole 6224b Inner front bulge (support member reinforcement part) 6224c Inner rear bulge (support member reinforcement part) 6224d Extension 6225 Outer peeling suppression member fixing part 6225a Outside fixing hole 6225b Outer front bulge (support member reinforcement part) 6225c Outer rear bulge (support member reinforcement part) 63, 63A, 63B, 63C, 63D Peel-off prevention material 631, 631A, 631B, 631C, 631D Peel-off prevention bracket 6311 Side wall 6311a Concave part (bracket reinforcement part) 6311b Insertion hole 6311c Notch 6311d Protruding part (bracket reinforcement part) 6312 Bottom wall 6312a Flat area 6312b Slope 6312c Through hole 6313 Upper wall section 632 Bracket connection parts 6321 Front connecting member 6322 Rear connecting member

Claims

1. A vehicle seat including a seat cushion and a slide rail device disposed under the seat cushion, The slide rail device is a lower rail fixed to the vehicle; an upper rail movable along a direction in which the lower rail extends; a separation prevention member that prevents the lower rail and the upper rail from separating from each other, the peeling-inhibiting member has a peeling-inhibiting bracket that is connected to the upper rail and abuts against the lower rail when the upper rail is subjected to an upward impact load to inhibit the upper rail and the lower rail from peeling away from each other, The vehicle seat according to claim 1, wherein the peel-prevention bracket has a bracket reinforcing portion that suppresses deformation of the peel-prevention bracket.

2. 2. The vehicle seat according to claim 1, wherein the bracket reinforcing portion is located at a connecting portion with the upper rail.

3. The upper rail includes a rail member that is movable along an extension direction of the lower rail, and a support member that is provided on the rail member and supports the seat cushion. The vehicle seat according to claim 1 , wherein the separation suppression bracket is connected to the support member.

4. 4. The vehicle seat according to claim 3, wherein the bracket reinforcing portion is located at a connecting portion with the support member.

5. The separation prevention bracket has a side wall portion located in a seat width direction of the lower rail and the upper rail in a front view, and a bottom wall portion bent and extending perpendicularly from the side wall portion, 2. The vehicle seat according to claim 1, wherein the bracket reinforcing portion is a recess in which the side wall portion is recessed inward in the seat width direction.

6. The peel-off prevention bracket has left and right side wall portions located on both sides of the lower rail and the upper rail in a seat width direction when viewed from the front, and a bottom wall portion connecting bottom portions of the left and right side wall portions to each other, 4. The vehicle seat according to claim 3, wherein the support member is sandwiched between the left and right side wall portions.

7. The peeling-inhibiting member has a connecting member that connects the left and right side wall portions of the peeling-inhibiting bracket, The vehicle seat according to claim 6, wherein the separation suppression bracket is connected to the support member via the connection member.

8. The peel-off prevention bracket has left and right side wall portions located on both sides of the lower rail and the upper rail in a seat width direction when viewed from the front, and a bottom wall portion connecting bottom portions of the left and right side wall portions to each other, 4. The vehicle seat according to claim 3, wherein a dimension of the upper portion of the peeling-prevention bracket in the front-rear direction is greater than a dimension of the bottom portion in the front-rear direction.

9. 4. The vehicle seat according to claim 3, wherein a longitudinal dimension of the separation-prevention bracket at a portion connected to the support member is greater than a longitudinal dimension of a portion other than the connected portion.

10. 4. The vehicle seat according to claim 3, wherein the support member has a support member reinforcing portion at a portion where the support member is connected to the peel-off suppression bracket, the support member reinforcing portion suppressing deformation of the support member.

Images