JP2022168724A - Vehicular seat - Google Patents

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

The present invention relates to a vehicle seat.

In some vehicle seats, a member is attached to a cushion spring of a seat cushion. For example, Patent Document 1 below discloses a pair of fitting portions in which two adjacent wire portions of spring wires of a seat are respectively fitted at both ends, and a pair of fitting portions provided between the pair of fitting portions for sensors. A technique related to a fitting having a plug portion into which a connector is fitted is disclosed. In this prior art, the spring wire is slidable within at least one fitting portion.

Japanese Patent No. 4009985

By the way, in a vehicle seat, a cushion spring of a seat cushion may be supported by attaching a unit such as an actuator unit. And it is also possible to divert the technique regarding attachment of said patent document 1 to attachment of the unit to a cushion spring.

However, if the unit is used in such a way, there is a concern that the unit may tilt around the axis of the spring wire in the fitting portion when the passenger is seated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat that can prevent or suppress tilting of a unit attached to a cushion spring when an occupant is seated.

The vehicle seat of the present invention described in claim 1 comprises a seat portion on which an occupant sits, a frame portion forming a skeleton, a cushion spring bridged over the frame portion, and a seat lower portion by the cushion spring. a seat cushion provided with a cushion pad elastically supported from the side; a unit provided in the seat cushion and arranged on the seat lower side of the cushion pad; and a region of the cushion spring at the left end in the seat width direction , a fastened portion provided in one of the area on the right end side in the seat width direction and the area in the central portion in the seat width direction; A fastening portion fastened to a portion, and a region on the left end side in the seat width direction of the cushion spring and a region on the right end side in the seat width direction of the cushion spring. and a planar slide provided in the unit corresponding to the seat surface portion and slidably arranged on the seat surface portion along the seat width direction. a sliding portion having a surface; and a displacement restricting portion 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.

In addition, the "seat width direction center region" in claim 1 means a region consisting of the seat width direction center and its vicinity (hereinafter the same in this specification). Further, the ``left edge area in the sheet width direction'' in claim 1 means an area excluding the left part of the central area in the sheet width direction from the area on the left side in the sheet width direction. The term "area" refers to an area obtained by excluding the right side portion of the central area in the seat width direction from the area on the right side in the seat width direction (hereinafter the same in the present specification).

According to the above configuration, in the seat cushion on which the occupant sits, the cushion spring is stretched over the frame portion forming the skeleton, and the cushion pad is elastically supported from the lower side of the seat by the cushion spring. Also, the unit provided on the seat cushion is arranged on the seat lower side of the cushion pad.

In addition, a fastened portion is 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 on the central portion in the seat width direction, and the unit includes: A fastening portion is provided corresponding to the portion to be fastened. A fastening portion provided on the unit is fastened to a fastening portion provided on the cushion spring. In addition, in the region of the left end in the seat width direction and the region of the right end in the seat width direction of the cushion spring, in the region where the fastening part is not provided, an upward seat that is formed in a flat shape and arranged along the horizontal direction A face portion is provided, and the unit is provided with a sliding portion corresponding to the seat portion. The planar sliding surface of the sliding portion is disposed on the seat surface portion provided on the cushion spring so as to be slidable along the seat width direction, and the displacement of the sliding portion in the seat front-rear direction is controlled by displacement regulation. Regulated by the Department. When the occupant is seated, the sliding portion provided in the unit slides along the seat width direction in surface contact with the seat surface portion, thereby allowing the deformation of the cushion spring in the seat width direction and tilting the unit. is prevented or suppressed.

According to a second aspect of the present invention, there is provided a vehicle seat according to the first aspect, wherein the cushion spring is provided with a cover portion that covers at least a portion of the upper surface of the sliding portion.

According to the above configuration, even if the lower surface of the cushion pad descends when the passenger is seated, the cover prevents or suppresses contact between the lower surface of the cushion pad and the upper surface of the sliding portion. Therefore, the sliding portion can easily slide, and the lower surface of the cushion pad can be prevented or suppressed from rubbing against the sliding portion.

A vehicle seat according to claim 3 is the vehicle seat according to claim 1 or claim 2, wherein the cushion spring is provided upright on both sides of the seat surface portion in the seat front-rear direction, and the upper end position thereof A raised portion is provided at a height position on the upper side of the seat relative to the upper surface of the moving portion.

According to the above configuration, when the lower surface of the cushion pad descends when the occupant is seated, the raised portion can prevent the lower surface of the cushion pad from approaching the upper surface side of the sliding 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.

As described above, according to the vehicle seat of the present invention, it is possible to prevent or suppress the tilting of the unit attached to the cushion spring when the passenger is seated.

1 is a perspective view showing a vehicle seat according to an embodiment of the invention; FIG. FIG. 2 is an enlarged perspective view showing the skeleton structure of the seat cushion in FIG. 1; 3 is an enlarged perspective view showing a state seen from the direction of arrow 3 in FIG. 2. FIG. FIG. 2 is a schematic side view showing a case where the pelvis support is in a non-pressing state in the vehicle seat of FIG. 1; FIG. 2 is a schematic side view showing a case where a pelvis support is in a pressed state in the vehicle seat of FIG. 1; 3 is an enlarged perspective view showing a state in which the actuator unit of FIG. 2 is attached to a cushion spring; FIG. FIG. 3 is an enlarged plan view showing a state seen from the direction of arrow 6 in FIG. 2; 7 is an enlarged sectional view showing a state cut along line 7-7 in FIG. 6; FIG. FIG. 4 is an exploded perspective view showing a state in which the cushion spring and the actuator unit are exploded; FIG. 4 is an exploded side view showing a state in which the cushion spring and the actuator unit are exploded;

A vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. FIG. An arrow FR shown appropriately in these drawings indicates the front side of the seat, an arrow UP indicates the upper side of the seat, and an arrow W indicates the width direction of the seat.

(Configuration of embodiment)
FIG. 1 shows a perspective view of a vehicle seat 10 according to this embodiment. The vehicle seat 10 has a seat body 10H. The seat main body 10H includes a seat cushion 12 that constitutes a seat on which the 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 the head of the seated occupant. and a headrest 16 for The seat cushion 12 includes a seat cushion frame 12F (see FIG. 2) as a frame portion forming a skeleton and covered with a cushion pad 12P. The seat back 14 has a seat back frame (not shown) covered with a seat back pad 14P.

FIG. 2 shows an enlarged perspective view of the skeleton structure of the seat cushion 12 . The seat cushion frame 12F is provided on both sides in the seat width direction of the seat cushion 12 and extends in the seat front-rear direction. A reclining rod 12B that serves as the reclining center of the seat back 14 (see FIG. 1), a seat pan (an element grasped as a “front frame” in a broad sense) 12A that connects the front ends of a pair of left and right side frames 12S, It has 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.

The cushion spring 12C includes a plurality of (here, four) S springs 12C1, 12C2, 12C3, and 12C4 arranged side by side in the seat width direction. Adjacent portions of the S springs 12C1, 12C2, 12C3, and 12C4 in the seat width direction are connected in the seat width direction by resin-made connecting portions 12X at predetermined positions. A portion of the rear portion of the cushion spring 12C, which is forward 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 viewed from the direction of arrow 3 in FIG. As shown in FIGS. 2 and 3, the cushion spring 12C has a rear mounting portion 12CX on the rear upper portion including the rear end portion. The rear attachment portion 12CX is formed in a substantially inverted U shape when viewed from the side, 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 formed integrally with the rear portion of the cushion spring 12C.

As shown in FIGS. 4A and 4B, the seat body 10H is provided with a pelvis support 18 (simplified and schematically shown in FIGS. 4A and 4B). The pelvis 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 is not pressed shown in FIG. 4A. ing. In this embodiment, when the pelvis support 18 is ON, it is in the pressing state, and when the pelvis support 18 is OFF, it is in the non-pressing state. An example of the configuration of the pelvis support 18 will be described below.

The pelvis 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 is driven by a motor 22 (in a broad sense, a drive unit) to move a portion of the seat back pad 14P corresponding to the pelvis Pp of the seated occupant P to the front and rear of the seat. direction. Further, the cushion support 30 is driven by a motor (in a broad sense, a drive unit) 40 to displace a portion of the cushion pad 12P corresponding to the pelvis Pp of the seated occupant P in the vertical direction of the seat. Since various known mechanisms can be applied to the back lower support 20, detailed description of the back lower support 20 is omitted.

The motors 22 and 38 are electrically connected to an ECU 40 (illustrated as a block 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. The ECU 40 also has a control section 42 as a functional configuration. The control unit 42 controls the operation of the motor 22 and the motor 38 based on, for example, an ON/OFF signal of an operation switch (not shown) that can be operated by a seated occupant.

As shown in FIG. 2, the cushion support 30 has a flap 32 (only the outline is shown by imaginary lines (two-dot chain lines) in the figure) on the upper side with respect to 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) toward the upper side of the seat.

The flap 32 is formed in a substantially U shape with an open front side of the seat in a plan view, and is formed in a substantially L shape with a raised rear end in a side view. The flap 32 is connected in the seat width direction by a crossbar 32C at the front-rear direction middle portions of the side portions 32S forming the left and right ends thereof. Further, the flap 32 has a rear side portion 32R extending in the seat width direction at the rear upper end and a crossbar 32C connected by a substantially L-shaped connecting portion 32L in a side view.

A pair of mounting shaft portions 32A are formed at the front end portion of the flap 32 and extend short toward the sides approaching each other in a plan view. The pair of mounting shafts 32A are supported rotatably about the axis in the width direction of the seat by shaft support portions 50A of support pieces 50 integrally formed on both sides of the intermediate portion of the cushion spring 12C in the seat front-rear direction. It is As a result, the flap 32 is rotatable about the axis in the seat 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 toward the upper side of the seat. This is the position to press against.

The cushion support 30 has an actuator unit 34 as a unit for rotating the flap 32 . FIG. 2 shows the actuator unit 34 in a schematic block state (the same applies to FIGS. 3 to 9). The actuator unit 34 is mounted on the rear portion of the seat cushion 12 and arranged below the seat of the cushion pad 12P (see FIG. 1). Then, the part 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 vertical direction of the seat via the flap 32. As shown in FIG.

Various known techniques can be applied to the actuator unit 34 . Therefore, a detailed description of the actuator unit 34 will be omitted, but 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 is rotated by a motor 38 (see FIG. 4A). a pair of left and right sliders that move away from each other; and a pair of left and right sliders corresponding to the pair of left and right sliders. A rotating member capable of rotating about the rotation center and pushing up the flap 32 in accordance with the movement of the slider may be provided, and may be mounted on the base member.

FIG. 5 shows an enlarged perspective view of the state where the actuator unit 34 is attached to the cushion spring 12C, and FIG. 6 shows an enlarged plan view of the state viewed from the direction of arrow 6 in FIG. there is 8 shows an exploded perspective view of the cushion spring 12C and the actuator unit 34, and FIG. 9 is an exploded side view of the cushion spring 12C and the actuator unit 34. It is shown.

As shown in FIG. 8, a fastened portion 52 is provided in a region on the left end side in the seat width direction (right side in the drawing) of the rear portion of the cushion spring 12C. The fastened portion 52 is made of resin and formed integrally 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 fastening portion 52 along the seat up-down direction. As shown in FIG. 5, reinforcing ribs 53 are formed around the fastened portion 52, but are not shown in other drawings.

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

The first mounting bracket 60 includes a fastening portion 62 , a hanging portion 64 hanging down from the seat width direction inner end of the fastening portion 62 , and a seat width direction inside extending from the lower end of the hanging portion 64 to the actuator unit 34 . and a lower wall portion 66 fixed to the . 8, the first mounting bracket 60 is shown separated from the actuator unit 34. As shown in FIG. As shown in FIGS. 8 and 9, the first mounting bracket 60 is, for example, bifurcated on the lower side, and each bifurcated portion is fastened to the actuator unit 34 by fasteners 69B (see FIG. 6). be.

As shown in FIG. 8, a receiving portion 54 is provided in a region on the seat width direction right end side (left side in the drawing) in the rear portion of the cushion spring 12C. The receiving portion 54 includes an upward facing seat surface portion 56 that is formed in a planar shape and is arranged along the horizontal direction, and extends inward in the seat width direction from portions of the seat surface portion 56 on both sides in the seat front-rear direction on the seat width direction inner side. and a pair of extensions 57 . The seat surface portion 56 is set inside a U-shaped portion of the S spring 12C4 that opens inward in the seat width direction in plan view. The pair of extending portions 57 includes a pair of opposed end surface portions 57A opposed to each other in the seat front-rear direction.

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 this embodiment, the sliding portion 72 is a part of the second mounting bracket 70 and formed in a flat plate shape. The sliding portion 72 includes a planar sliding surface 72A (see FIG. 7) arranged on the seat surface portion 56 so as to be slidable along the seat width direction (see arrow 72X in FIG. 6). 7 is an enlarged cross-sectional view showing a state cut along line 7-7 in FIG.

As shown in FIG. 8 , the second mounting bracket 70 includes a sliding portion 72 , a hanging portion 74 that hangs down from the inner end of the sliding portion 72 in the seat width direction, and a seat width from the lower end of the hanging portion 74 . and a lower wall portion 76 extending inwardly and fixed to the actuator unit 34 . As an example, the second mounting bracket 70 is bifurcated on the lower side, and each bifurcated bifurcation is fastened to the actuator unit 34 by fasteners 78 . Also, as shown in FIGS. 5 and 6, the upper portion of the drooping portion 74 is arranged adjacent to the pair of opposed end surface portions 57A. The upper portion of the drooping portion 74 located near the sliding portion 72 and the pair of opposed end face portions 57A serve as a displacement restricting portion that restricts the displacement of the second mounting bracket 70 including the sliding portion 72 in the seat front-rear direction. A mechanism 80 is constructed. In other words, the upper portion of the second mounting bracket 70 is arranged so as to be inserted (fitted) between the pair of opposed end surface portions 57A and is slidable in the seat width direction with respect to the receiving portion 54. It is

As shown in FIG. 6, the cushion spring 12C is provided with a cover portion 58 that partially covers the upper surface 72B of the sliding portion 72. As shown in FIG. As shown in FIG. 7, the cushion springs 12C are provided on both sides of the seat surface portion 56 in the front-rear direction of the seat, and the upper end positions of the cushion springs 12C are positioned above the upper surface 72B of the sliding portion 72. A set ridge 59 is provided. The raised portions 59 extend in the seat width direction along both ends of the seat surface portion 56 in the seat front-rear direction, and can also be grasped as “bank portions”. The cover portion 58 described above extends from the vicinity of the upper end portions of the pair of front and rear raised portions 59 in a direction approaching each other. The seat surface portion 56, the extending portion 57 (see FIG. 6), the cover portion 58 and the protruding portion 59 are made of resin and formed integrally with the S spring 12C4 by insert molding or the like.

(Action and effect of the embodiment)
Next, the operation and effects of the above embodiment will be described.

As shown in FIG. 2, in the seat cushion 12, a seat cushion frame 12F is spanned by a cushion spring 12C, and the cushion pad 12P (see FIG. 1) is elastically supported from the lower side of the seat by the cushion spring 12C. be. Further, as shown in FIGS. 4A and 4B, the actuator unit 34 provided in the seat cushion 12 is arranged on the seat lower side of the cushion pad 12P and corresponds to the pelvis Pp of the seated occupant P in the cushion pad 12P. The part is displaced in the vertical direction of the seat.

In addition, as shown in FIG. 5, a portion to be fastened 52 is provided in a region on the left end side (right side in the drawing) of the cushion spring 12C in the seat width direction, and the actuator unit 34 corresponds to the portion to be fastened 52. A fastening portion 62 (see FIG. 8) is provided. A fastening portion 62 (see FIG. 8) provided in the actuator unit 34 is fastened to a fastening portion 52 provided in the cushion spring 12C. In addition, in the region of the seat width direction right end side (left side in the drawing) of the cushion spring 12C, an upward seat surface portion 56 formed in a plane shape and arranged along the horizontal direction is provided. A sliding portion 72 is provided corresponding to the seat surface portion 56 . A planar sliding surface 72A (see FIG. 7) of the sliding portion 72 is disposed on a seating surface portion 56 provided on the cushion spring 12C so as to be slidable along the seat width direction. is restricted by a displacement restriction mechanism 80 in the longitudinal direction of the seat. When the occupant is seated, the sliding portion 72 provided in the actuator unit 34 slides along the seat width direction in surface contact with the seat surface portion 56, thereby allowing deformation of the cushion spring 12C in the seat width direction. At the same time, tilting of the actuator unit 34 is prevented or suppressed.

Further, in this embodiment, the cushion spring 12C is provided with a cover portion 58 that partially covers the upper surface 72B of the sliding portion 72 . Accordingly, even if the lower surface of the cushion pad 12P shown in FIG. 1 descends when the passenger is seated, the cover portion 58 prevents or prevents contact between the lower surface of the cushion pad 12P and the upper surface 72B of the sliding portion 72 shown in FIG. Suppressed. Therefore, the sliding portion 72 can easily slide, and the lower surface of the cushion pad 12P (see FIG. 1) can be prevented or suppressed from rubbing against the sliding portion 72. As shown in FIG.

In this embodiment, the cushion springs 12C are provided on both sides of the seat surface portion 56 in the seat front-rear direction, and their upper end positions are set at a height position higher than the upper surface 72B of the sliding portion 72 on the seat upper side. A raised portion 59 is provided. As a result, when the lower surface of the cushion pad 12P shown in FIG. 1 descends when the passenger is seated, the raised portion 59 prevents the lower surface of the cushion pad 12P from approaching the upper surface 72B of the sliding portion 72 shown in FIG. can be suppressed. 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).

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 be prevented or suppressed from tilting when the passenger is seated. As a result, the load on the operating shaft of the actuator unit 34 can be suppressed.

(Supplementary explanation of the embodiment)
In the above-described embodiment, the fastened portion 52 is provided on the seat width direction left end side (right side in the figure) of the cushion spring 12C, and the actuator unit 34 is provided with a fastening portion 62 (see FIG. 8) corresponding to this. is provided, and a seat surface portion 56 is provided in a region on the right end side (left side in the figure) of the cushion spring 12C in the seat width direction, and a sliding portion 72 is provided in the actuator unit 34 correspondingly. Such a configuration may be left-right reversed. That is, as a modification of the above-described embodiment, a fastened portion (52) is provided in the right end region of the cushion spring (12C) in the seat width direction, and a fastening portion (62) is provided on the actuator unit (34) correspondingly. is provided, a seat surface portion (56) is provided in a region on the left end side in the seat width direction of the cushion spring (12C), and a sliding portion (72) is provided in the actuator unit (34) corresponding to this, may be configured as follows.

Further, as another modification, a fastened portion (52) is provided in the region of the seat width direction central portion of the cushion spring (12C), and a fastening portion (62) is provided in the actuator unit (34) correspondingly. A seat surface portion (56) is provided in each of the left end region in the seat width direction and the right end region in the seat width direction of the cushion spring (12C). 72) may be provided. In such a modified example, the actuator unit (34) can be positioned in the central region of the seat width direction of the cushion spring (12C).

8 is fixed to the actuator unit 34, and the second mounting bracket having the sliding portion 72 is fixed to the actuator unit 34. However, part of the base member of the actuator unit (34) may constitute the fastening part (62), or part of the base member of the actuator unit (34) constitutes the sliding part (72). You may have

Further, in the above embodiment, as shown in FIGS. 5 and 6, the displacement restricting mechanism 80 as the displacement restricting portion is a pair of opposing mechanisms provided on the upper portion of the hanging portion 74 of the second mounting bracket 70 and the cushion spring 12C. However, the displacement restricting portion is provided in the cushion spring (12C) and is arranged adjacent to the front and rear end surfaces of the sliding portion (72). It may be configured as a displacement restricting portion.

In the above-described embodiment, the cushion spring 12C is provided with a pair of front and rear cover portions 58 that cover a portion of the upper surface 72B of the sliding portion 72. However, the cover portions provided on the cushion spring (12C) are The pair of front and rear cover portions 58 of the above embodiment may be connected in the seat front-rear direction, or the entire upper surface (72B) from the vicinity of the upper end portion of the pair of front and rear raised portions 59 may be covered. .

In the above-described embodiment, the cover portion 58 extends from near the upper ends of the pair of front and rear raised portions 59 in a direction toward each other. The cover portion may be erected and extend inward in the seat width direction from the vicinity of the upper end portion of the convex portion to cover part or all of the upper surface (72B) of the sliding portion (72).

Furthermore, as another modified example, for example, when it is not possible to secure a space for providing the cover portion (58) above the sliding portion (72), a component corresponding to the cover portion (58) of the above-described embodiment is provided. It is also possible to adopt a configuration in which the

Further, as a modification of the above embodiment, a configuration in which a component corresponding to the protuberance 59 of the above embodiment is not provided may be adopted.

Further, in the above-described embodiment, as schematically shown in FIG. 4B, the actuator unit 34 is operated to rotate the flap 32, and the part of the cushion pad 12P corresponding to the pelvis Pp of the seated occupant P is moved. The actuator unit directly displaces the portion of the cushion pad (12P) corresponding to the pelvis (Pp) of the seated occupant (P) in the vertical direction of the seat. It may be something that causes

In the above embodiment, the vehicle seat 10 includes the back lower support 20 and the cushion support 30 as the pelvis support 18. However, as a modified example of the above embodiment, the vehicle seat includes the back lower support as the pelvis support. The configuration may be such that only the cushion support (30) is provided without (20).

Further, 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. A unit other than the actuator unit, such as a blower unit in the above, may also be used.

Note that the above-described embodiment and the plurality of modified examples described above can be combined as appropriate and implemented.

An example of the present invention has been described above, but the present invention is not limited to the above, and it goes without saying that it is possible to implement various modifications without departing from the gist of the present invention. .

10 vehicle seat 12 seat cushion 12F seat cushion frame (frame portion)
12C Cushion spring 12P Cushion pad 34 Actuator unit (unit)
52 fastened portion 56 bearing surface portion 58 cover portion 59 raised portion 62 fastening portion 72 sliding portion 72A sliding surface 72B upper surface of sliding portion 80 displacement regulating mechanism (displacement regulating portion)
P Seated occupant Pp Pelvis

Claims (3)

It comprises a frame portion forming a seat portion on which an occupant sits and forming a skeleton, a cushion spring bridged over the frame portion, and a cushion pad elastically supported from the lower side of the seat by the cushion spring. seat cushion and
a unit provided on the seat cushion and arranged on the seat lower side of the cushion pad;
a fastened portion provided in one of a region on the left end side in the seat width direction, a region on the right end side in the seat width direction, and a region on the central portion in the seat width direction of the cushion spring;
a fastening portion provided corresponding to the fastening portion in the unit and fastened to the fastening portion;
In the region of the left end in the seat width direction of the cushion spring and the region of the right end in the seat width direction of the cushion spring, it is provided in the region where the fastened portion is not provided, and is formed in a planar shape and arranged along the horizontal direction. a seat;
a sliding portion provided corresponding to the seat surface portion in the unit and having a planar sliding surface disposed on the seat surface portion so as to be slidable along the seat width direction;
a displacement regulating portion positioned near the sliding portion and at least a part of which is provided in the cushion spring and which regulates displacement of the sliding portion in the seat front-rear direction;
A vehicle seat having 2. The vehicle seat according to claim 1, wherein the cushion spring is provided with a cover portion that covers at least part of an upper surface of the sliding portion. The cushion spring is provided with protuberant portions which stand 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 on the upper side of the seat relative to the upper surface of the sliding portion. The vehicle seat according to claim 1 or 2.

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