Vehicle seat frame and vehicle seat

Abstract

To secure impact absorption performance and reduce a deformation amount of an entire frame during a frontal collision.SOLUTION: In a vehicular seat frame 30, a connection pipe 68 which connects left and right front links 62 in a seat lateral direction is disposed below a rear part of a cushion pan 36 included in a seat cushion frame 32. A lower surface of a rear part of the cushion pan 36 is formed with an inclination surface 36A which inclines downward to the seat rear side. When the cushion pan 36 is deformed to the seat lower side by a load from an occupant during a frontal collision of a vehicle, the inclination surface 36A of the cushion pan 36 slides to the seat rear oblique lower side relative to the connection pipe 68.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat and a frame thereof. [Background technology]

[0002] In the vehicle seat cushion frame described in Patent Document 1 below, the front and rear sides of vertical frame bodies arranged on both left and right sides of the seat are connected by horizontal frame bodies to form the skeleton of the seat cushion. The space between the front ends of both vertical frame bodies, including the front horizontal frame body, is covered from above by a panel fixed to both vertical frame bodies. The panel side of the front horizontal frame body is formed into a concave shape to increase the distance from the panel. This allows the panel to deform significantly when it receives a load from the occupant during a frontal collision of the vehicle, thereby increasing the amount of energy absorbed in the front part of the seat. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5799838 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned prior art, the front horizontal frame body has a recessed panel side, which reduces its strength. As a result, the front horizontal frame body may bend under the load of the occupant, which may increase the deformation of the entire vehicle seat cushion frame. Therefore, there is room for improvement in terms of preventing this.

[0005] SUMMARY OF THE INVENTION In consideration of the above, an object of the present invention is to provide a vehicle seat frame and a vehicle seat that can reduce the amount of deformation of the entire frame while ensuring impact absorption during a frontal collision. [Means for solving the problem]

[0006] A first aspect of the vehicle seat frame of the present invention comprises a seat cushion frame that forms the skeleton of a seat cushion on which a vehicle occupant sits, the seat cushion frame having left and right side frames arranged on left and right sides of the seat cushion, and a cushion pan that connects upper ends of front portions of the left and right side frames in the left-right direction of the seat; left and right slide rails that are arranged below the left and right side frames and attached to a floor of the vehicle; left and right risers that are attached to the left and right slide rails; left and right links that have one end connected to the front portions of the left and right side frames and the other end connected to the left and right risers; and a connecting member that connects the left and right links in the left-right direction of the seat and is arranged below a rear portion of the cushion pan, wherein an inclined surface that slopes downward toward the rear of the seat is formed on the underside of the rear portion of the cushion pan, and when the vehicle hits the front side, the cushion pan is deformed downward in the seat due to the load from the occupant, so that the inclined surface slides diagonally downward and rearward of the seat relative to the connecting member.

[0007] According to a first aspect, a vehicle seat frame includes a seat cushion frame, left and right slide rails, left and right risers, left and right links, and a connecting member. The seat cushion frame forms the framework of a seat cushion on which a vehicle occupant sits, and includes left and right side frames disposed on left and right sides of the seat cushion, and a cushion pan connecting upper ends of front portions of the left and right side frames in the left-right direction of the seat. The left and right slide rails are disposed below the left and right side frames and attached to the floor of the vehicle. The left and right risers are attached to the left and right slide rails. One ends of the left and right links are connected to the front portions of the left and right side frames, and the other ends are connected to the left and right risers. The connecting member connects the left and right links in the left-right direction of the seat and is disposed below the rear of the cushion pan. An inclined surface sloping downward toward the rear of the seat is formed on the underside of the rear portion of the cushion pan.

[0008] During a frontal vehicle collision, the cushion pan deforms downward due to the load of a seatbelt-fastening occupant, causing the inclined surface to slide diagonally downward and rearward relative to the connecting member. This suppresses an increase in the reaction force applied to the cushion pan from the connecting member, allowing the cushion pan to deform, thereby ensuring impact absorption. Moreover, because there is no need to provide the connecting member with a concave shape, the connecting member is prevented from bending under the load of the occupant. As a result, the deformation of the entire frame can be reduced.

[0009] A second aspect of the vehicle seat frame of the present invention is the first aspect, wherein the connecting member is bent at left and right bending portions provided on both sides of the seat in the left-right direction, and the center portion of the seat in the left-right direction slides against the inclined surface.

[0010] In the second aspect, the relative position between the center of the connecting member and the inclined surface of the cushion pan can be adjusted by changing the bending amount of the left and right bending portions of the connecting member, which improves the degree of freedom in arranging the cushion pan and the connecting member, for example.

[0011] A vehicle seat frame according to a third aspect of the present invention is the vehicle seat frame according to the first or second aspect, wherein the inclined surface is formed linearly when viewed in the left-right direction of the seat.

[0012] According to the third aspect, the inclined surface of the cushion pan is formed linearly when viewed from the left-right direction of the seat, so that the reaction force received from the connecting member when the inclined surface slides against the connecting member can be adjusted by changing the inclination angle of the inclined surface.

[0013] A vehicle seat frame according to a fourth aspect of the present invention is the vehicle seat frame according to the first or second aspect, wherein the inclined surface is formed in a curved shape when viewed in the left-right direction of the seat.

[0014] According to the fourth aspect, the inclined surface of the cushion pan is formed in a curved shape when viewed from the left and right of the seat, so that the reaction force received from the connecting member when the inclined surface slides against the connecting member can be changed depending on the relative position between the inclined surface and the connecting member.

[0015] A vehicle seat according to a fifth aspect of the present invention comprises a seat cushion on which an occupant sits and a seat back that supports the back of the occupant and serves as a backrest, and the skeleton of the vehicle seat frame is formed by any one of the first to fourth aspects.

[0016] According to the fifth aspect, the framework of a vehicle seat including a seat cushion and a seat back is formed by the vehicle seat frame of any one of the first to fourth aspects, thereby achieving the same effects as any one of the first to fourth aspects. [Effects of the Invention]

[0017] As described above, the vehicle seat frame and vehicle seat according to the present invention can reduce the amount of deformation of the entire frame while ensuring impact absorption in the event of a frontal collision. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view showing the periphery of a seat cushion frame in a vehicle seat frame according to an embodiment, as viewed from above and diagonally in front of the left of the seat. FIG. [Figure 2] 2 is a perspective view showing the periphery of a seat cushion frame in the vehicle seat frame as viewed from below and diagonally in front of the right of the seat. FIG. [Figure 3] 2 is a perspective view showing the periphery of a front portion of a seat cushion frame in the vehicle seat frame, as viewed diagonally from the front left side of the seat. FIG. [Figure 4] 2 is a perspective view showing the periphery of the left side of the front part of the seat cushion frame in the vehicle seat frame, as viewed from below the seat. FIG. [Figure 5]FIG. 2 is a cross-sectional view showing a cut surface taken along line F5-F5 in FIG. [Figure 6] 6 is a cross-sectional view corresponding to FIG. 5, illustrating a state in which an inclined surface of the cushion pan and a connecting pipe slide against each other when the cushion pan is deformed. FIG. [Figure 7] FIG. 10 is a cross-sectional view showing a state in which the cushion pan hits a connecting pipe when the cushion pan is deformed in a comparative example. [Figure 8] FIG. 10 is a cross-sectional view showing a first modified example of an inclined surface of a cushion pan. [Figure 9] FIG. 10 is a cross-sectional view showing a second modified example of the inclined surface of the cushion pan. [Figure 10] FIG. 10 is a cross-sectional view showing a third modified example of the inclined surface of the cushion pan. [Figure 11] FIG. 10 is a front view showing the periphery of the left side of the front part of the seat cushion frame as seen from the front side of the seat in a modified example of the vehicle seat frame according to the embodiment, and shows an example in which the slide mechanism has a motor. [Figure 12A] 1 is a side view showing a vehicle seat according to an embodiment, illustrating a state before a frontal collision; [Figure 12B] FIG. 12B is a side view corresponding to FIG. 12A, showing a state at the beginning of a frontal collision. [Figure 12C] FIG. 12C is a side view corresponding to FIGS. 12A and 12B, showing a state in the later stage of a frontal collision. DETAILED DESCRIPTION OF THE INVENTION

[0019] A vehicle seat 10 and a vehicle seat frame 30 according to one embodiment of the present invention will be described below with reference to Figures 1 to 12C. Note that in each figure, some reference numerals may be omitted to make the drawings easier to understand. Also, an arrow FR shown as appropriate in each figure indicates the front of the vehicle, an arrow UP indicates the upper side of the vehicle, an arrow LH indicates the left side of the vehicle, and an arrow RH indicates the right side of the vehicle. Hereinafter, when the front-rear, left-right, up-down directions are used in the description, they refer to front and rear in the front-rear direction of the vehicle, left and right in the left-right direction of the vehicle (vehicle width direction), and up and down in the up-down direction of the vehicle, unless otherwise specified.

[0020] As shown in FIGS. 12A to 12C, a vehicle seat 10 according to this embodiment includes a seat cushion 12 on which a vehicle occupant P sits, a seatback 14 that supports the back of the occupant P and serves as a backrest, and a headrest 16 that supports the head of the occupant P. The front-to-rear direction, left-to-right direction (width direction), and up-to-down direction of the vehicle seat 10 coincide with the front-to-rear, left-to-right, up-to-down directions of the vehicle. The occupant P shown in FIGS. 12A to 12C is, for example, an AM50 (50th percentile of American adult males) HYBRID III dummy used in frontal collision tests. The occupant P is wearing a three-point seat belt 18 installed in the vehicle (not shown).

[0021] The skeleton of the vehicle seat 10 is formed by a vehicle seat frame 30 shown in Figures 1 to 4. This vehicle seat frame 30 has a seat cushion frame 32 that forms the skeleton of the seat cushion 12, and a seat back frame 40 that forms the skeleton of the seat back 14. Pad materials (not shown) covered with skins 13, 15 (see Figures 12A to 12C) are attached to the seat cushion frame 32 and the seat back frame 40, respectively.

[0022] The seat cushion frame 32 includes a pair of left and right side frames 34 that are disposed on the left and right sides of the seat cushion 12 and extend in the front-to-rear direction of the seat, a cushion pan 36 that spans between the upper ends of the front portions of the left and right side frames 34, and a rear frame 38 that spans between the rear ends of the left and right side frames 34. A seat cushion spring (not shown) spans between the cushion pan 36 and the rear frame 38. The seat cushion spring elastically supports the padding of the seat cushion 12 from below the seat.

[0023] The left and right side frames 34 are formed into an elongated shape, for example, by press-molding sheet metal, and are arranged with their longitudinal direction along the front-to-rear direction of the seat and their thickness direction along the left-to-right direction of the seat. The cushion pan 36 is formed, for example, from sheet metal into a generally rectangular shape, and is arranged with its thickness direction along the up-down direction of the seat, and both ends in the left-to-right direction of the seat are fixed to the front portions of the left and right side frames 34 by means of welding or the like. The rear frame 38 is formed, for example, from a metal pipe, and is arranged with its axial direction along the left-to-right direction of the seat, and both ends in the left-to-right direction of the seat are rotatably connected to the rear ends of the left and right side frames 34 by means of caulking or the like.

[0024] The lower end of a seatback frame 40 is recliningly connected to the rear ends of the left and right side frames 34 via a well-known reclining mechanism 46. The seatback frame 40 includes a pair of left and right side frames 42 that are disposed on the left and right sides of the seat back 14 and extend in the vertical direction of the seat, an upper frame (not shown) that spans between the upper ends of the left and right side frames 42, and a lower frame 44 that spans between the lower ends of the left and right side frames 42. A headrest 16 is connected to the upper frame.

[0025] The left and right side frames 34 of the seat cushion frame 32 are connected to the vehicle floor via a well-known slide mechanism 48 and a lifter mechanism 56, allowing adjustment of the front-to-rear and up-to-down positions relative to the vehicle floor. The slide mechanism 48 includes a pair of left and right slide rails 50 disposed below the left and right side frames 34. The slide rails 50 include a lower rail 52 fixed to the vehicle floor by means of, for example, bolt fastening, an upper rail 54 supported so as to be slidable in the front-to-rear direction relative to the lower rail 52, and a locking mechanism (not shown) that restricts sliding of the upper rail 54 relative to the lower rail 52. The lower rail 52 and the upper rail 54 are disposed with their longitudinal directions extending in the front-to-rear direction.

[0026] The lifter mechanism 56 is configured to include a pair of left and right front risers 58 (see FIGS. 1 to 4), a pair of left and right rear risers 60 (see FIGS. 1 and 2), a pair of left and right front links 62 (see FIGS. 2 to 4), and a pair of left and right rear links 64 (see FIG. 2; the right rear link 64 is not shown). The left and right front risers 58, the left and right rear risers 60, the left and right front links 62, and the left and right rear links 64 are manufactured by, for example, press-forming sheet metal. The left and right front risers 58 correspond to the "left and right risers" in this invention, and the left and right front links 62 correspond to the "left and right links" in this invention.

[0027] 1 to 4, the left and right front risers 58 have front fixing portions 58A fixed to upper surfaces of the front ends of the left and right upper rails 54 by means of bolts or the like, and front vertical wall portions 58B extending upward from inner left and right ends of the front fixing portions 58A. Although not shown, the left and right rear risers 60 have rear fixing portions fixed to upper surfaces of the rear ends of the left and right upper rails 54 by means of bolts or the like, and rear vertical wall portions extending upward from one left and right end of the rear fixing portion.

[0028] The left and right front links 62 and the left and right rear links 64 are disposed in a posture inclined rearward. One end (respective upper end) of each of the left and right front links 62 is overlapped from the inside in the left-right direction with the front portions of the left and right side frames 34, and is rotatably connected to the front portions of the left and right side frames 34 via connecting shafts 65 whose axis direction is in the left-right direction. The other end (respective lower end) of each of the left and right front links 62 is overlapped from the outside in the left-right direction with the front vertical wall portions 58B of the left and right front risers 58, and is rotatably connected to the front vertical wall portions 58B via connecting shafts 66 whose axis direction is in the left-right direction.

[0029] One end (respective upper end) of each of the left and right rear links 64 is disposed inside in the left-right direction with respect to the rear portions of the left and right side frames 34, and is fixed to the rear frame 38. As a result, the left and right rear links 64 are rotatably connected to the left and right side frames 34 via the rear frame 38. The other end (respective lower end) of each of the left and right rear links 64 is overlapped with the rear vertical wall portions of the left and right rear risers 60 from one side in the left-right direction, and is rotatably connected to the rear vertical wall portion via a connecting shaft (not shown) whose axis is in the left-right direction.

[0030] A sector gear, for example, is formed on one of the left and right rear links 64, and a pinion (not shown) meshed with the sector gear is rotated manually or electrically to rotate the one rear link 64. This causes the left and right rear links 64 and the left and right front links 62 to rotate, changing the vertical position of the seat cushion frame 32 (i.e., the seat cushion 12).

[0031] The left and right front links 62 are connected in the left-right direction by a connecting pipe 68, which is a connecting member. The connecting pipe 68 is made of, for example, a metal pipe material, and is arranged with its axis in the left-right direction. Both left and right ends of the connecting pipe 68 are inserted into through holes (not shown) formed in the middle parts of the left and right front links 62, and are fixed to the left and right front links 62 by means of welding or the like.

[0032] As shown in Figure 5, the connecting pipe 68 is disposed below the rear portion of the cushion pan 36. An inclined surface 36A that slopes downward toward the rear side is formed on the underside of the rear portion of the cushion pan 36. As an example, this inclined surface 36A is formed linearly when viewed in the left-right direction. Under normal circumstances, this inclined surface 36A faces the connecting pipe 68 from above, with a gap 76 between them. As described above, the connecting pipe 68 rotates together with the front link 62 as the up-down position of the seat cushion 12 is changed (adjusted) by the lifter mechanism 56, but the connecting pipe 68 is configured to maintain the gap 76 regardless of the rotational position of the connecting pipe 68.

[0033] However, in the event of a frontal collision of the vehicle, an excessive load acting on the seat cushion 12 from the buttocks of an occupant P (see FIGS. 9A to 9C) wearing a seat belt 18 in a diagonally downward direction causes the cushion pan 36 to deform downward. This causes the lower side of the inclined surface 36A to come into contact with the connecting pipe 68. If the cushion pan 36 attempts to deform further downward in this state, the inclined surface 36A is configured to slide diagonally downward and rearward relative to the connecting pipe 68 (see arrow S in FIG. 6).

[0034] The above-described frontal collision is similar to the full-wrap frontal collision test (against a rigid barrier, speed 35 mph (approximately 56 km / h) specified by, for example, the National Highway Traffic Safety Administration (NHTSA) of the U.S. Department of Transportation. In the early stage of this frontal collision (see FIG. 12B), a relatively low load is applied from the occupant P to the seat cushion 12, and in the later stage of this frontal collision (see FIG. 12C), a relatively high load is applied from the occupant P to the seat cushion 12. The strength of the cushion pan 36 is set so that the cushion pan 36 deforms downward in this later stage of the frontal collision.

[0035] The relative positions of the inclined surface 36A and the connecting pipe 68 are set so that, due to this deformation of the cushion pan 36, the inclined surface 36A slides diagonally downward and rearward relative to the connecting pipe 68. As shown in Figures 2 to 4, in this embodiment, as an example, the connecting pipe 68 is bent in a generally crank shape at left and right bent portions 68B provided on both left and right sides. Due to this bending, the position of the left-right central portion 68A of the connecting pipe 68 relative to the inclined surface 36A is adjusted, and in the event of a frontal collision, the left-right central portion 68A of the connecting pipe 68 is configured to slide against the inclined surface 36A.

[0036] 7 differs from the present embodiment in the relative positional relationship between the inclined surface 36A formed on the rear of the cushion pan 36 and the connecting pipe 68, the size of the inclined surface 36A, and the like. In this comparative example, even if the cushion pan 36 deforms and hits the connecting pipe 68 during a frontal collision, the two do not slide relative to each other, and therefore the reaction force applied from the cushion pan 36 to the buttocks of the occupant P increases. In this modified example, the connecting pipe 68 may deform (bend) due to the load from the occupant P. In contrast, in the present embodiment, the inclined surface 36A slides against the connecting pipe 68, which suppresses an increase in the reaction force applied from the cushion pan 36 to the buttocks of the occupant P and prevents the connecting pipe 68 from bending.

[0037] The inclined surface 36A shown in FIG. 5 is merely an example, and the configuration of the inclined surface 36A can be modified as appropriate. For example, in a first modified example shown in FIG. 8, the inclination angle of the inclined surface 36A is set smaller than that of the present embodiment. By changing the inclination angle of the inclined surface 36A in this manner, it is possible to adjust the reaction force, etc., applied from the cushion pan 36 to the buttocks of the occupant P. Also, for example, in a second modified example shown in FIG. 9, the inclined surface 36A is formed in a curved shape that convex upward in a left-right view. In this second modified example, the reaction force received from the connecting pipe 68 when the inclined surface 36A slides relative to the connecting pipe 68 can be changed depending on the relative position of the inclined surface 36A and the connecting pipe 68. Also, for example, in a third modified example shown in FIG. 10, the inclined surface 36A is formed in a corrugated shape in a left-right view. The pitch of the corrugated shape is set smaller than the diameter of the connecting pipe 68. In this third modified example, the frictional resistance when the inclined surface 36A slides relative to the connecting pipe 68 can be adjusted by the corrugated shape.

[0038] 1 to 4 show an example in which the slide mechanism 48 is manual, but when the slide mechanism 48 has a motor 55 as in the modified example shown in FIG. 11, the motor 55 may be disposed below the connecting pipe 68. In this case, for example, by disposing one of the left and right bent portions 68B of the connecting pipe 68 (the left bent portion 68B in the example shown in FIG. 11) above the motor 55, it is possible to avoid interference between the connecting pipe 68 and the motor 55. As a result, it is not necessary to change the fixed position of the connecting pipe 68 relative to the front link 62 in relation to the motor 55.

[0039] (Action and effect) Next, the operation and effects of this embodiment will be described.

[0040] In the vehicle seat 10 configured as described above, the vehicle seat frame 30 includes a seat cushion frame 32, left and right slide rails 50, left and right front risers 58, left and right front links 62, and a connecting pipe 68. The seat cushion 12 frame 32 forms the framework of the seat cushion 12 on which a vehicle occupant P sits, and includes left and right side frames 34 disposed on the left and right sides of the seat cushion 12, and a cushion pan 36 connecting upper ends of the front portions of the left and right side frames 34 in the left-right direction. The left and right slide rails 50 are disposed below the left and right side frames 34 and attached to the floor of the vehicle.

[0041] The left and right front risers 58 are attached to the upper rails 54 of the left and right slide rails 50. The left and right front links 62 have one end connected to the front portions of the left and right side frames 34 and the other end connected to the left and right front risers 58. A connecting pipe 68 connects the left and right front links 62 in the left-right direction and is disposed below the rear portion of the cushion pan 36. An inclined surface 36A that slopes downward toward the rear side is formed on the underside of the rear portion of the cushion pan 36.

[0042] In the early stages of a frontal collision (see FIG. 12B), the load applied to the cushion pan 36 from the buttocks of the occupant P wearing the seat belt 18 is low, so the submarine phenomenon can be suppressed by the reaction force applied from the cushion pan 36 to the occupant's buttocks. In the later stages of a frontal collision (see FIG. 12C), the load applied to the cushion pan 36 from the buttocks of the occupant P increases, causing the cushion pan 36 to deform downward. At this time, the inclined surface 36A of the cushion pan 36 slides diagonally downward and rearward of the seat relative to the connecting pipe 68. This suppresses an increase in the reaction force applied to the cushion pan 36 from the connecting pipe 68, allowing the cushion pan 36 to deform, thereby ensuring impact absorption. As a result, the injury level of the occupant P can be reduced.

[0043] Moreover, unlike the prior art described in the Background Art section, there is no need to provide the connecting pipe 68 with a concave shape, and therefore the connecting pipe 68 can be prevented from bending under the load of the occupant P. As a result, the amount of deformation of the entire frame can be reduced. Also, when the connecting pipe 68 hits the underside of the cushion pan 36 at the upper end side of the inclined surface 36A, further deformation of the cushion pan 36 is suppressed, and therefore forward movement of the occupant P's waist can be restricted.

[0044] Furthermore, in this embodiment, even in a configuration in which the connecting pipe 68 of the lifter mechanism 56 is disposed below the rear portion of the cushion pan 36, the deformation stroke (shock absorption stroke) of the cushion pan 36 can be ensured by the sliding movement between the inclined surface 36A and the connecting pipe 56. In this way, since the impact is absorbed in the space above the connecting pipe 68, this configuration can be applied to vehicles in which it is difficult to ensure an impact absorption space below the connecting pipe 68.

[0045] Furthermore, in this embodiment, the connecting pipe 68 is bent at left and right bending portions 68B provided on both left and right sides, and the left and right central portion 68A slides along the inclined surface 36A. Therefore, by changing the amount of bending of the left and right bending portions 68B of the connecting pipe 68, the relative position between the central portion 68A of the connecting pipe 68 and the inclined surface 36A of the cushion pan 36 can be adjusted. This improves the degree of freedom in arranging the cushion pan 36 and the connecting pipe 68, for example.

[0046] In the above embodiment, the left and right bent portions 68B are formed on both the left and right sides of the connecting pipe 68, but this is not limiting, and the connecting pipe 68 may be formed in a straight line.

[0047] Furthermore, in the above embodiment, the connecting pipe 68 as the connecting member is made of a metal pipe, but the material of the connecting member is not limited to this and can be changed as appropriate.

[0048] 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]

[0049] 10 Vehicle seats 12 seat cushions 14 Seat back 30 Vehicle seat frame 32 Seat cushion frame 34 Side frame 36 Cushion Bread 36A Slope 50 slide rail 58 Front Riser (Riser) 62 Front Link (Link) 68 Connecting pipe (connecting member) 68A central part 68B Bending section

Claims

1. a seat cushion frame that forms a framework of a seat cushion on which a vehicle occupant sits, the seat cushion frame having left and right side frames disposed on left and right sides of the seat cushion and a cushion pan that connects upper ends of front portions of the left and right side frames in the left-right direction of the seat; left and right slide rails disposed below the left and right side frames and attached to a floor portion of the vehicle; left and right risers attached to the left and right slide rails; left and right links, one end of each of which is connected to a front portion of the left and right side frames and the other end of each of which is connected to the left and right risers; a connecting member that connects the left and right links in the seat left-right direction and is disposed below a rear portion of the cushion pan; Equipped with A sloped surface that slopes downward toward the rear side of the seat is formed on the lower surface of the rear portion of the cushion pan, In the event of a frontal collision of the vehicle, the cushion pan is deformed downward in the seat due to the load from the occupant, causing the inclined surface to slide diagonally downward and rearward in relation to the connecting member, and this sliding prevents the connecting member from bending.

2. The vehicle seat frame according to claim 1, wherein the connecting member is bent at left and right bending portions provided on both sides of the seat in the left-right direction, and a central portion of the seat in the left-right direction slides on the inclined surface.

3. 3. The vehicle seat frame according to claim 1, wherein the inclined surface is formed linearly when viewed in the left-right direction of the seat.

4. 3. The vehicle seat frame according to claim 1, wherein the inclined surface is formed in a curved shape when viewed in the left-right direction of the seat.

5. A vehicle seat comprising a seat cushion on which an occupant sits and a seat back that supports the back of the occupant and serves as a backrest, the vehicle seat frame having a skeleton formed by the vehicle seat frame according to any one of claims 1 to 4.

Images