Vehicle seat

Abstract

To obtain a vehicular seat capable of preventing or inhibiting a unit attached to a cushion spring from inclining when an occupant is seated.SOLUTION: A fastening part of an actuator unit 34 is fastened to a fastened part 52 provided at a left end side area as seen in a sheet width direction of a cushion spring 12C. An upper facing seating surface part 56 formed in a planer shape and arranged along a horizontal direction is provided at a right end side area as seen in the seat width direction of the cushion spring 12C. A slide part 72 is provided corresponding to the seating surface part 56 at the actuator unit 34. A planar slide surface of the slide part 72 is disposed on the seating surface part 56 provided at the cushion spring 12C so as to be slidable along the seat width direction. Further, displacement of the slide part 72 in a seat anteroposterior direction is restricted by a displacement restriction mechanism 80.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] In a vehicle seat, a member may be attached to a cushion spring of a seat cushion. For example, Patent Document 1 below discloses a technique related to a fixture having a pair of fitting portions at both ends thereof into which two adjacent wire portions of a seat spring wire are respectively fitted, and a plug portion provided between the pair of fitting portions into which a sensor connector is fitted. And in this prior art, the spring wire is slidable within at least one of the fitting portions.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a vehicle seat, a unit such as an actuator unit may be attached to and supported by a cushion spring of a seat cushion. And it is possible to apply the technique related to the attachment described in Patent Document 1 above to the attachment of the unit to the cushion spring.

[0005] However, when applied in this way, there is a concern that the unit may tilt around the axis of the spring wire in the fitting portion when the occupant sits down.

[0006] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat capable of preventing or suppressing the tilting of a unit attached to a cushion spring when an occupant sits down.

Means for Solving the Problem

[0007] The vehicle seat of the present invention according to claim 1 constitutes a seating portion on which an occupant sits, and includes a frame portion that constitutes a skeleton, a cushion spring spanned over the frame portion, and a cushion pad elastically supported from below the seat by the cushion spring. A seat cushion, a unit provided on the seat cushion and disposed on the lower side of the seat of the cushion pad, a fastened portion provided in any one of the regions on the left end side in the seat width direction, the region on the right end side in the seat width direction, and the central region in the seat width direction of the cushion spring, and a fastening portion provided corresponding to the fastened portion in the unit and fastened to the fastened portion; an upward seat surface portion provided in a region where the fastened portion is not provided in the region on the left end side in the seat width direction and the region on the right end side in the seat width direction of the cushion spring, formed in a planar shape and arranged along the horizontal direction; and a sliding portion provided corresponding to the seat surface portion in the unit and having a planar sliding surface slidably arranged along the seat width direction on the seat surface portion. And a displacement restricting portion located in the vicinity of the sliding portion and at least partially provided on the cushion spring for restricting the displacement of the sliding portion in the front-rear direction of the seat. Further, the cushion spring is provided with a cover portion that covers at least a part of the upper surface of the sliding portion. 。 Claim 2The vehicle seat according to the present invention described in constitutes a seating portion on which an occupant sits, and includes a frame portion that constitutes a skeleton, a cushion spring spanned across the frame portion, and a cushion pad elastically supported from below the seat by the cushion spring. The vehicle seat further includes a seat cushion provided with a unit disposed on the lower side of the seat of the cushion pad, a fastened portion provided in any one of a region on the left end side in the seat width direction of the cushion spring, a region on the right end side in the seat width direction, and a region in the central portion in the seat width direction, a fastening portion provided in the unit corresponding to the fastened portion and fastened to the fastened portion, an upward seat surface portion provided in a region where the fastened portion is not provided in the region on the left end side in the seat width direction and the region on the right end side in the seat width direction of the cushion spring, the seat surface portion being formed in a planar shape and disposed along the horizontal direction, a sliding portion provided in the unit corresponding to the seat surface portion and having a planar sliding surface slidably disposed along the seat width direction on the seat surface portion, and a displacement restricting portion located in the vicinity of the sliding portion and at least partially provided on the cushion spring, the displacement restricting portion restricting displacement of the sliding portion in the front-rear direction of the seat. Further, the cushion spring is provided with raised portions that are erected on both sides of the seat surface portion in the front-rear direction of the seat and whose upper end positions are set at a height position above the seat relative to the upper surface of the sliding portion. 。

[0008] Note that, in claim 1 and Claim 2 the "region in the central portion in the seat width direction" refers to a region consisting of the center in the seat width direction and the vicinity thereof (the same shall apply hereinafter in this specification). Further, in claim 1 and Claim 2 the "region on the left end side in the seat width direction" refers to a region obtained by excluding the left side portion of the region in the central portion in the seat width direction from the region on the left side in the seat width direction, and the "region on the right end side in the seat width direction" refers to a region obtained by excluding the right side portion of the region in the central portion in the seat width direction from the region on the right side in the seat width direction (the same shall apply hereinafter in this specification).

[0009] respectively described in Claim 1 and Claim 2 According to the configuration, in the seat cushion on which the occupant sits, a cushion spring is bridged over a frame portion constituting a skeleton, and the cushion pad is elastically supported from below the seat by this cushion spring. Further, the unit provided in the seat cushion is disposed on the lower side of the seat of the cushion pad.

[0010] Further, a fastened portion is provided in any one of the regions on the left end side in the seat width direction, the region on the right end side in the seat width direction, and the central region in the seat width direction of the cushion spring, and a fastening portion is provided in the unit corresponding to the fastened portion. The fastening portion provided in the unit is fastened to the fastened portion provided in the cushion spring. Further, in the regions where the fastened portion is not provided in the region on the left end side in the seat width direction and the region on the right end side in the seat width direction of the cushion spring, an upward seat surface portion formed in a planar shape and arranged along the horizontal direction is provided, and a sliding portion is provided in the unit corresponding to the seat surface portion. The planar sliding surface of this sliding portion is slidably arranged along the seat width direction on the seat surface portion provided in the cushion spring, and the displacement of the sliding portion in the front-rear direction of the seat is regulated by a displacement regulating portion. Then, when the occupant sits down, the sliding portion provided in the unit slides along the seat width direction in surface contact with the seat surface portion, so that the deformation of the cushion spring in the seat width direction is allowed while the inclination of the unit is prevented or suppressed.

[0012] Further, according to Claim 1 According to the configuration, even when the lower surface of the cushion pad descends when the occupant sits down, the contact between the lower surface of the cushion pad and the upper surface of the sliding portion is prevented or suppressed by the cover portion. Therefore, the sliding portion can slide easily, and it is possible to prevent or suppress the lower surface of the cushion pad from rubbing against the sliding portion.

[0014] Further, according to Claim 2 According to the configuration, when the lower surface of the cushion pad descends when the occupant sits down, it is possible to suppress the lower surface of the cushion pad from approaching the upper surface side of the sliding portion by the raised portion. Therefore, it can contribute to ensuring the slidability of the sliding portion and preventing frictional damage to the lower surface of the cushion pad.

Advantages of the Invention

[0015] As described above, according to the vehicle seat of the present invention, there is an excellent effect that the unit attached to the cushion spring can be prevented or suppressed from tilting when the occupant sits down.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0017] The vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. In these figures, the arrow FR appropriately shown indicates the front side of the seat, the arrow UP indicates the upper side of the seat, and the arrow W indicates the seat width direction.

[0018] (Configuration of the Embodiment) FIG. 1 shows a perspective view of a vehicle seat 10 according to the present embodiment. The vehicle seat 10 has a seat body 10H. The seat body 10H includes a seat cushion 12 that constitutes a seating portion on which an occupant sits and supports the buttocks and thighs of the seated occupant, a seat back 14 that supports the back of the seated occupant, and a headrest 16 that supports the head of the seated occupant. The seat cushion 12 has a cushion pad 12P covering a seat cushion frame 12F (see FIG. 2) as a frame portion constituting the skeleton. Further, the seat back 14 has a seat back pad 14P covering a seat back frame (not shown).

[0019] FIG. 2 shows a perspective view of the skeleton structure of the seat cushion 12 in an enlarged state. The seat cushion frame 12F includes a pair of left and right side frames 12S provided on both sides in the seat width direction of the seat cushion 12 and extending in the seat front-rear direction, a reclining rod 12B that connects the rear end portions of the pair of left and right side frames 12S and serves as a reclining center of the seat back 14 (see FIG. 1), and a seat pan (an element grasped as a "front frame" in a broad sense) 12A that connects the front end portions of the pair of left and right side frames 12S. Further, a cushion spring 12C is stretched in the seat front-rear direction between the seat pan 12A and the reclining rod 12B in the seat cushion frame 12F. The cushion spring 12C elastically supports a cushion pad 12P (see FIG. 1) that supports the buttocks and thighs of the seated occupant from below the seat.

[0020] The cushion spring 12C includes a plurality (here, four) of S springs 12C1, 12C2, 12C3, 12C4 arranged side by side in the seat width direction. The S springs 12C1, 12C2, 12C3, 12C4 are connected in the seat width direction by a resin connecting portion 12X at a predetermined position between adjacent portions in the seat width direction. The portion of the cushion spring 12C at the rear part and in front of the reclining rod 12B is inclined so as to rise sharply upward toward the rear side of the seat in a side view. FIG. 3 shows an enlarged perspective view of the state seen from the direction of arrow 3 in FIG. 2. As shown in FIGS. 2 and 3, the cushion spring 12C includes a rear attachment portion 12CX at the upper rear part including the rear end portion. The rear attachment portion 12CX is formed in a substantially inverted U shape in a side view and is attached to the reclining rod 12B. Further, as shown in FIG. 2, a resin rear panel 12R extending in the seat width direction is integrally formed at the rear part of the cushion spring 12C.

[0021] As shown in FIGS. 4A and 4B, a pelvic support 18 (schematically shown in a simplified manner in FIGS. 4A and 4B) is provided on the seat body 10H. The pelvic support 18 is configured to be switchable between a pressing state in which the pelvis Pp of the seated occupant P shown in FIG. 4B is pressed and a non-pressing state in which the pelvis Pp of the seated occupant P shown in FIG. 4A is not pressed. In the present embodiment, the pelvic support 18 is in a pressing state when it is ON and in a non-pressing state when it is OFF. Hereinafter, an example of the configuration of the pelvic support 18 will be described.

[0022] The pelvic support 18 includes a back lower support 20 provided on the seat back 14 and a cushion support 30 provided on the seat cushion. As shown in FIGS. 4A and 4B, the back lower support 20 displaces the portion of the seat back pad 14P corresponding to the pelvis Pp of the seated occupant P in the seat front-rear direction by driving a motor 22 (in a broad sense, a driving portion). Further, the cushion support 30 is a motor (in a broad sense, a driving portion) 38By driving it, the portion of the cushion pad 12P corresponding to the pelvis Pp of the seated occupant P is displaced in the seat vertical direction. Since various known mechanisms can be applied to the back lower support 20, a detailed description of the back lower support 20 is omitted.

[0023] The motor 22 and the motor 38 are electrically connected to an ECU 40 (shown in block form in the figure). The ECU 40 has a CPU, a ROM, a RAM, a storage, and a communication interface, and these components are communicably connected to each other via a bus. Further, the ECU 40 has a control unit 42 as a functional configuration. The control unit 42 controls the operations of the motor 22 and the motor 38 based on, for example, the ON / OFF signal of an operation switch (not shown) operable by the seated occupant.

[0024] As shown in FIG. 2, the cushion support 30 is provided with a flap 32 (only the outer contour line is shown by an imaginary line (two-dot chain line) in the figure) above the rear portion of the cushion spring 12C. The flap 32 is a rotating member for pressing the rear portion of the cushion pad 12P (see FIG. 1) upward of the seat.

[0025] The flap 32 is formed in a substantially U shape with the front side of the seat open in plan view, and is formed in a substantially L shape with the rear end rising in side view. The flap 32 has the middle portions in the front-rear direction of the side portions 32S constituting both its left and right ends connected in the seat width direction by a cross bar 32C. Further, the flap 32 has a rear edge portion 32R extending in the seat width direction at its upper end on the rear side, and the cross bar 32C are connected by a substantially L-shaped connecting portion 32L in side view.

[0026] In addition, a pair of mounting shaft portions 32A that extend short on the side approaching each other in plan view are formed at the front end portion of the flap 32. The pair of mounting shaft portions 32A are rotatably supported around the axis in the sheet width direction by shaft support portions 50A of resin-made support pieces 50 integrally formed on both sides of the middle portion in the front-rear direction of the seat of the cushion spring 12C. Thereby, the flap 32 is rotatable around the axis in the sheet width direction between the non-pressing position shown in FIG. 2 and the pressing position (not shown). In the flap 32, the non-pressing position is a position where the rear portion of the cushion pad 12P (see FIG. 1) is not pressed upward against the sheet, and the pressing position is a position where the rear portion of the cushion pad 12P (see FIG. 1) is pressed upward against the sheet.

[0027] The cushion support 30 includes an actuator unit 34 as a unit for rotating the flap 32. In FIG. 2, the actuator unit 34 is shown in a schematically blocked state (the same applies in FIGS. 3 to 9). The actuator unit 34 is mounted on the rear portion of the seat cushion 12 and disposed on the lower side of the sheet of the cushion pad 12P (see FIG. 1), and operates by driving a motor 38 (see FIG. 4A) to rotate the flap 32, so that the portion of the cushion pad 12P (see FIG. 1) corresponding to the pelvis Pp of the seated occupant P (both see FIG. 4A) is displaced in the sheet vertical direction via the flap 32.

[0028] Various known techniques can be applied to the actuator unit 34. Therefore, although a detailed description of the actuator unit 34 is omitted, an example of the configuration of the actuator unit 34 will be briefly described. The actuator unit 34 includes, for example, a lead screw that extends in the sheet width direction and rotates by a motor 38 (see FIG. 4A), and a pair of left and right sliders that mesh with the lead screw and move away from and toward each other along the sheet width direction in response to the rotation of the lead screw. A pair of left and right rotation members are provided corresponding to the pair of left and right sliders, have a rotation center in the sheet front-rear direction between the pair of left and right sliders, and can rotate around the rotation center in response to the movement of the pair of left and right sliders to push up the flap 32. It may be configured such that they are mounted on the base member.

[0029] FIG. 5 shows an enlarged perspective view of the state in which the actuator unit 34 is attached to the cushion spring 12C, and FIG. 6 shows an enlarged plan view of the state as viewed from the direction of arrow 6 in FIG. 2. Further, FIG. 8 shows an exploded perspective view of the state in which the cushion spring 12C and the actuator unit 34 are disassembled, and FIG. 9 shows an exploded side view of the state in which the cushion spring 12C and the actuator unit 34 are disassembled.

[0030] As shown in FIG. 8, a fastened portion 52 is provided in a region on the left end side (right side in the figure) in the sheet width direction at the rear of the cushion spring 12C. The fastened portion 52 is made of resin and is integrally formed with the S spring 12C1 by insert molding or the like. The fastened portion 52 is arranged along the horizontal direction. A fastening hole 52A is formed through the fastened portion 52 along the sheet up-down direction. As shown in FIG. 5, reinforcing ribs 53 are formed around the fastened portion 52, but the illustration is appropriately omitted in other figures.

[0031] As shown in FIG. 8, a fastening portion 62 provided corresponding to the fastened portion 52 in the actuator unit 34 is fastened to the fastened portion 52. In the present embodiment, the fastening portion 62 is, as an example, a part of the first mounting bracket 60 and is formed in a flat plate shape. A fastening hole 62A is formed through the fastening portion 62. As shown in FIG. 9, a weld nut 68A is pre-fixed to the outer peripheral portion of the fastening hole 62A (see FIG. 8) on the lower surface of the fastening portion 62. Then, the bolt 69A shown in FIG. 8 passes through the fastening hole 52A of the fastened portion 52 and the fastening hole 62A of the fastening portion 62 and is screwed into the weld nut 68A (see FIG. 9), whereby the fastening portion 62 is fastened to the fastened portion 52.

[0032] The first mounting bracket 60 includes a fastening portion 62, a hanging portion 64 hanging down from an end portion inside the sheet width direction of the fastening portion 62, and a lower wall portion 66 extending inward in the sheet width direction from the lower end of the hanging portion 64 and fixed to the actuator unit 34. In FIG. 8, the first mounting bracket 60 is shown in a state separated from the actuator unit 34. As shown in FIGS. 8 and 9, the first mounting bracket 60, as an example, has a bifurcated lower side, and each of the bifurcated portions is fastened to the actuator unit 34 by a fastener 69B (see FIG. 6).

[0033] As shown in FIG. 8, a receiving portion 54 is provided in a region on the right end side in the sheet width direction (left side in the figure) at the rear of the cushion spring 12C. The receiving portion 54 includes an upward seat surface portion 56 formed in a planar shape and arranged along the horizontal direction, and a pair of extending portions 57 extending inward in the sheet width direction from portions inside the sheet width direction on both sides in the sheet front-rear direction of the seat surface portion 56. The seat surface portion 56 is set inside the U-shaped portion of the S-spring 12C4 that is open inward in the sheet width direction in a plan view. The pair of extending portions 57 includes a pair of opposing end surface portions 57A that oppose each other in the sheet front-rear direction.

[0034] As shown in FIGS. 5 and 6, the actuator unit 34 is provided with a sliding portion 72 corresponding to the seat surface portion 56. In the present embodiment, the sliding portion 72 is a part of the second mounting bracket 70 and is formed in a flat plate shape. The sliding portion 72 includes a planar sliding surface 72A (see FIG. 7) that is arranged to be slidable (see arrow 72X in FIG. 6) along the sheet width direction on the seat surface portion 56. Note that FIG. 7 is an enlarged cross-sectional view showing a state cut along line 7-7 in FIG. 6.

[0035] As shown in FIG. 8, the second mounting bracket 70 includes a sliding portion 72, a hanging portion 74 that hangs down from an end portion inside the sliding portion 72 in the sheet width direction, and a lower wall portion 76 that extends inward in the sheet width direction from the lower end of the hanging portion 74 and is fixed to the actuator unit 34. As an example, the lower side of the second mounting bracket 70 is bifurcated, and each of the bifurcated portions is fastened to the actuator unit 34 by a fastener 78. Further, as shown in FIGS. 5 and 6, the upper portion of the hanging portion 74 is disposed adjacent to a pair of opposing end surface portions 57A. The upper portion of the hanging portion 74 and the pair of opposing end surface portions 57A located in the vicinity of the sliding portion 72 constitute a displacement restricting mechanism 80 as a displacement restricting portion that restricts the displacement of the second mounting bracket 70 including the sliding portion 72 in the front-rear direction of the sheet. In other words, the upper portion of the second mounting bracket 70 is arranged (fitted) to be inserted between the pair of opposing end surface portions 57A and is made slidable in the sheet width direction with respect to the receiving portion 54.

[0036] As shown in FIG. 6, the cushion spring 12C is provided with a cover portion 58 that covers a part of the upper surface 72B of the sliding portion 72. Further, as shown in FIG. 7, the cushion spring 12C is provided with raised portions 59 that are erected on both sides of the seat surface portion 56 in the front-rear direction of the seat and whose upper end positions are set at a height position above the seat with respect to the upper surface 72B of the sliding portion 72. The raised portions 59 extend in the seat width direction along both ends of the seat surface portion 56 in the front-rear direction of the seat, and can also be grasped as "embankment portions". The above-described cover portion 58 extends in a direction approaching each other from the vicinity of the upper end portions of the pair of front and rear raised portions 59. The seat surface portion 56, the extension portion 57 (see FIG. 6), the cover portion 58, and the raised portions 59 are made of resin and are integrally formed with the S spring 12C4 by insert molding or the like.

[0037] (Operation and Effect of Embodiment) Next, the operation and effect of the above embodiment will be described.

[0038] As shown in FIG. 2, in the seat cushion 12, the cushion spring 12C is bridged over the seat cushion frame 12F, and the cushion pad 12P (see FIG. 1) is elastically supported from below the seat by this cushion spring 12C. Further, as shown in FIGS. 4A and 4B, the actuator unit 34 provided in the seat cushion 12 is disposed below the seat of the cushion pad 12P and displaces the portion corresponding to the pelvis Pp of the seated occupant P in the cushion pad 12P in the up-down direction of the seat.

[0039] Also, as shown in FIG. 5, a fastened portion 52 is provided in a region on the left end side (right side in the figure) in the seat width direction of the cushion spring 12C, and a fastening portion 62 (see FIG. 8) is provided in the actuator unit 34 corresponding to the fastened portion 52. The fastening portion 62 (see FIG. 8) provided in the actuator unit 34 is fastened to the fastened portion 52 provided in the cushion spring 12C. Further, in a region on the right end side (left side in the figure) in the seat width direction of the cushion spring 12C, an upward seat surface portion 56 formed in a planar shape and arranged along the horizontal direction is provided, and a sliding portion 72 is provided in the actuator unit 34 corresponding to the seat surface portion 56. The planar sliding surface 72A (see FIG. 7) of this sliding portion 72 is slidably arranged along the seat width direction on the seat surface portion 56 provided in the cushion spring 12C, and the displacement of the sliding portion 72 in the front-rear direction of the seat is regulated by a displacement regulating mechanism 80. Then, when the occupant is seated, the sliding portion 72 provided in the actuator unit 34 slides along the seat width direction in a surface contact state with the seat surface portion 56, so that the deformation of the cushion spring 12C in the seat width direction is allowed while the inclination of the actuator unit 34 is prevented or suppressed.

[0040] Also, in the present embodiment, the cushion spring 12C is provided with a cover portion 58 that covers a part of the upper surface 72B of the sliding portion 72. Thereby, even when the lower surface of the cushion pad 12P shown in FIG. 1 descends when the occupant is seated, the contact between the lower surface of the cushion pad 12P and the upper surface 72B of the sliding portion 72 shown in FIG. 5 is prevented or suppressed by the cover portion 58. Therefore, the sliding portion 72 can slide easily, and it is possible to prevent or suppress the lower surface of the cushion pad 12P (see FIG. 1) from rubbing against the sliding portion 72.

[0041] In addition, in the present embodiment, the cushion spring 12C is provided with raised portions 59 that are erected on both sides of the seat surface portion 56 in the front-rear direction of the seat and whose upper end positions are set at a height position above the seat compared to the upper surface 72B of the sliding portion 72. As a result, when the lower surface of the cushion pad 12P shown in FIG. 1 descends when the occupant is seated, the raised portion 59 can suppress the lower surface of the cushion pad 12P from approaching the upper surface 72B side of the sliding portion 72 shown in FIG. 5. Therefore, it is possible to contribute to ensuring the slidability of the sliding portion 72 and preventing frictional damage to the lower surface of the cushion pad 12P (see FIG. 1).

[0042] As described above, according to the vehicle seat 10 (see FIG. 1) of the present embodiment, the actuator unit 34 attached to the cushion spring 12C can prevent or suppress tilting when the occupant is seated. As a result, the load on the operating shaft of the actuator unit 34 can be suppressed.

[0043] (Supplementary Explanation of the Embodiment) In the above embodiment, the fastened portion 52 is provided in the region on the left end side (right side in the figure) in the seat width direction of the cushion spring 12C, and correspondingly, the fastening portion 62 (see FIG. 8) is provided in the actuator unit 34. The seat surface portion 56 is provided in the region on the right end side (left side in the figure) in the seat width direction of the cushion spring 12C, and correspondingly, the sliding portion 72 is provided in the actuator unit 34. However, such a configuration may be reversed left and right. That is, as a modification of the above embodiment, a fastened portion (52) is provided in the region on the right end side in the seat width direction of the cushion spring (12C), and correspondingly, a fastening portion (62) is provided in the actuator unit (34). A seat surface portion (56) is provided in the region on the left end side in the seat width direction of the cushion spring (12C), and correspondingly, a sliding portion (72) is provided in the actuator unit (34).

[0044] As another modification, a fastened portion (52) is provided in a region at the center in the sheet width direction of the cushion spring (12C), and a fastening portion (62) is provided in the actuator unit (34) corresponding thereto. Seating surfaces (56) are provided in regions on the left end side and the right end side in the sheet width direction of the cushion spring (12C), and sliding portions (72) are provided in the actuator unit (34) corresponding thereto. Such a configuration may be employed. In such a modification, the actuator unit (34) can be positioned in the region at the center in the sheet width direction of the cushion spring (12C), so that the deviation due to variations in the dimensional accuracy of the components can be reduced.

[0045] In the above-described embodiment, the first mounting bracket 60 including the fastening portion 62 shown in FIG. 8 is fixed to the actuator unit 34, and the second mounting bracket 70 including the sliding portion 72 is fixed to the actuator unit 34. However, a part of the base member of the actuator unit (34) may constitute the fastening portion (62), or a part of the base member of the actuator unit (34) may constitute the sliding portion (72).

[0046] In the above-described embodiment, as shown in FIGS. 5 and 6, the displacement restricting mechanism 80 as the displacement restricting portion is constituted by the upper part of the hanging portion 74 of the second mounting bracket 70 and a pair of opposing end faces 57A provided on the cushion spring 12C. However, the displacement restricting portion may be a displacement restricting portion having another configuration, such as a pair of front and rear guide end faces provided on the cushion spring (12C) and adjacent to the front and rear end faces of the sliding portion (72).

[0047] In the above-described embodiment, a pair of front and rear cover portions 58 that cover a part of the upper surface 72B of the sliding portion 72 are provided on the cushion spring 12C. However, the cover portion provided on the cushion spring (12C) may be such that the pair of front and rear cover portions 58 in the above-described embodiment are connected in the front-rear direction of the sheet, or from near the upper ends of the pair of front and rear raised portions 59 Sliding portion (72)It may be configured to cover the entire upper surface (72B).

[0048] Also, in the above embodiment, the cover portion 58 extends in a direction approaching each other from near the upper ends of the pair of front and rear raised portions 59. However, for example, a convex portion may be erected on the outer side in the seat width direction of the seat surface (56), and the cover portion may extend from near the upper end of the convex portion toward the inner side in the seat width direction to cover part or all of the upper surface (72B) of the sliding portion (72).

[0049] Furthermore, as another modification, for example, in a case where it is not possible to secure a space for providing the cover portion (58) above the sliding portion (72), a configuration may be adopted in which a component corresponding to the cover portion 58 of the above embodiment is not provided.

[0050] Also, as a modification of the above embodiment, a configuration may be adopted in which a component corresponding to the raised portion 59 of the above embodiment is not provided.

[0051] Also, in the above embodiment, as schematically shown in FIG. 4B, when the actuator unit 34 operates, the flap 32 is rotated, and a portion of the cushion pad 12P corresponding to the pelvis Pp of the seated occupant P is displaced in the seat vertical direction via the flap 32. However, the actuator unit may directly displace a portion of the cushion pad (12P) corresponding to the pelvis (Pp) of the seated occupant (P) in the seat vertical direction.

[0052] Also, in the above embodiment, the vehicle seat 10 includes the backrest support 20 and the cushion support 30 as the pelvis support 18. However, as a modification of the above embodiment, the vehicle seat may be configured to include only the cushion support (30) without including the backrest support (20) as the pelvis support.

[0053] In addition, in the above embodiment, the case where the unit attached to the cushion spring 12C shown in FIG. 2 is the actuator unit 34 has been described as an example. However, the unit attached to the cushion spring (12C) may be a unit other than the actuator unit, such as a blower unit for blowing air.

[0054] Note that the above embodiment and the plurality of above-described modified examples can be implemented in appropriate combinations.

[0055] Although an example of the present invention has been described above, the present invention is not limited to the above, and it goes without saying that various modifications can be made and implemented within the scope not departing from the gist thereof.

Explanation of Reference Numerals

[0056] 10 Vehicle seat 12 Seat cushion 12F Seat cushion frame (frame part) 12C Cushion spring 12P Cushion pad 34 Actuator unit (unit) 52 Fastened part 56 Seat surface part 58 Cover part 59 Protrusion part 62 Fastening part 72 Sliding part 72A Sliding surface 72B Upper surface of the sliding part 80 Displacement restricting mechanism (displacement restricting part) P Occupant Pp Pelvis

Claims

1. A seat cushion including a seating portion on which an occupant sits, a frame portion constituting a skeleton, a cushion spring bridged over the frame portion, and a cushion pad elastically supported from below the seat by the cushion spring; A unit provided in the seat cushion and disposed on the lower side of the seat of the cushion pad; A fastened portion provided in any one of a region on the left end side in the seat width direction of the cushion spring, a region on the right end side in the seat width direction, and a region in the center portion in the seat width direction; A fastening portion provided corresponding to the fastened portion in the unit and fastened to the fastened portion; An upward seat surface portion provided in a region where the fastened portion is not provided in the region on the left end side in the seat width direction and the region on the right end side in the seat width direction of the cushion spring, formed in a planar shape and arranged along the horizontal direction; A sliding portion provided corresponding to the seat surface portion in the unit and having a planar sliding surface slidably arranged along the seat width direction on the seat surface portion; A displacement restricting portion located near the sliding portion and at least partially provided on the cushion spring, for restricting displacement of the sliding portion in the front-rear direction of the seat; And having; A vehicle seat, wherein a cover portion covering at least a part of the upper surface of the sliding portion is provided on the cushion spring.

2. A seat cushion including a seating portion on which an occupant sits, a frame portion constituting a skeleton, a cushion spring bridged over the frame portion, and a cushion pad elastically supported from below the seat by the cushion spring; A unit provided in the seat cushion and disposed on the lower side of the seat of the cushion pad; A fastened portion provided in any one of a region on the left end side in the seat width direction of the cushion spring, a region on the right end side in the seat width direction, and a region in the center portion in the seat width direction; A fastening portion provided corresponding to the fastened portion in the unit and fastened to the fastened portion; An upward seat surface portion provided in a region where the fastened portion is not provided in the region on the left end side in the seat width direction and the region on the right end side in the seat width direction of the cushion spring, formed in a planar shape and arranged along the horizontal direction; In the unit, there is a sliding portion provided corresponding to the seating surface and having a flat sliding surface that is slidably disposed along the seat width direction on the seating surface; a displacement restricting portion that is located in the vicinity of the sliding portion and at least a part of which is provided on the cushion spring to restrict displacement of the sliding portion in the seat front-rear direction; and the cushion spring is provided with raised portions that are erected on both sides of the seating surface in the seat front-rear direction and whose upper end positions are set at height positions above the seat relative to the upper surface of the sliding portion. A vehicle seat.

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