JP6149557B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a seat back portion that stands on the rear side of a seat cushion portion on which an occupant sits and supports the back of the occupant.

  2. Description of the Related Art Conventionally, there has been known a vehicle seat provided with side support portions that protrude to the front of the vehicle and support the left and right sides of the center part of the occupant on both the left and right sides of the seat back portion standing on the rear side of the seat cushion portion on which the occupant sits (For example, refer to Patent Document 1). Here, the side support portion is set so that the vehicle width direction inner side portion in contact with the occupant is relatively soft, and the vehicle width direction outer side portion that is the outer side is set to be relatively hard.

Japanese Unexamined Patent Publication No. 2005-40479

By the way, when an occupant seated in the seat cushion part performs a stretching action of the shoulder part, which is effective in recovering fatigue of shoulder muscles in the sitting state, that is, a stretching action of pulling both shoulders back to the body and bringing the shoulder blades together. Arms and shoulders come into contact with the outer side of the side support in the vehicle width direction.
On the other hand, in the conventional vehicle seat, since the outer side portion of the side support portion in the vehicle width direction is relatively hard, the side support portion is not easily deformed even when the arm of the occupant comes into contact. This hinders the operation of pulling the arms and shoulders backwards during stretching, and there is a problem that it is difficult to perform a sufficient stretching operation.

  The present invention has been made paying attention to the above problems, and even when sitting on the seat cushion part, it makes it easy to pull the arm and shoulder backward, and the shoulder can be stretched sufficiently. It aims at providing the vehicle seat which can be performed.

In order to achieve the above object, a vehicle seat of the present invention includes a seat cushion portion on which an occupant is seated, and a seat back portion that stands on the rear side of the seat cushion portion and supports the occupant. And the said seat back part has a main support part of the vehicle width direction center part, and a pair of side support part which protruded ahead of vehicles from this main support part while being provided in the right-and-left both sides of the main support part. Yes.
Further, in the inside of the side support portion, a soft hardness region portion in which the upper portion of the side support portion and the outer portion in the vehicle width direction is set to a hardness lower than the hardness of the upper portion of the side support portion and the inner portion in the vehicle width direction. Therefore, a different hardness switching line serving as a hardness switching boundary is provided.
In addition, the side support portion sets the soft hardness region portion from the upper end portion to the center portion of the seat back portion, and sets a different hardness switching line for defining the vehicle lower end portion of the soft hardness region portion to the vehicle. As it goes down, it inclines outward in the vehicle width direction.

In the vehicle seat of the present invention, a different hardness switching line serving as a hardness switching boundary is provided inside the side support portion. And by this different hardness switching line, the upper part of the side support part and the outer part in the vehicle width direction are partitioned as a soft hardness region part set to a hardness lower than the hardness of the upper part of the side support part and the inner part in the vehicle width direction. The
As a result, when the occupant seated in the seat cushion part performs a stretching operation of the shoulder part that pulls both shoulders backward in the seated state, the arm, shoulder, etc. contact the upper part of the side support part and the outer part in the vehicle width direction. Even so, the side support portion is easily deformed by the soft hardness region portion. For this reason, this side support part does not obstruct the stretching operation of the shoulder part.
Further, the soft hardness region portion is set above the different hardness switching line set inside the side support portion and at the outer portion in the vehicle width direction. In other words, the main support part in the center part in the vehicle width direction, the inner part in the vehicle width direction than the different hardness switching line of the side support part that is continuous with this main support part, and the side support part that the occupant's shoulders and arms are difficult to contact The hardness of the lower part of the vehicle is set to be relatively higher than the different hardness switching line. Therefore, unnecessary deformation of these portions can be suppressed. That is, even when the occupant's body moves with the stretching operation, the occupant can be stably supported.
As a result, even if the user sits on the seat cushion portion, the user can easily perform the operation of pulling the arm or shoulder to the rear of the body, and the shoulder can be sufficiently stretched.

1 is an overall perspective view showing a vehicle seat of Embodiment 1. FIG. FIG. 3 is a front view illustrating a seat back portion according to the first embodiment. It is a schematic diagram which shows the AA cross section in FIG. 2 is a side view showing a seat back portion of Example 1. FIG. (a) is explanatory drawing which shows the stretching operation | movement of a shoulder part, (b) is explanatory drawing which shows the rotation angle of a scapula at the time of the stretching operation | movement of a shoulder part. It is effect | action explanatory drawing which shows the shoulder part stretched state in the state seated on the vehicle seat of the comparative example. FIG. 6 is an operation explanatory diagram illustrating a shoulder stretch state in a state of being seated on the vehicle seat according to the first embodiment. It is explanatory drawing which shows the general distance with the compartment side wall of a vehicle seat.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the vehicle seat of this invention is demonstrated based on Example 1 shown on drawing.

Example 1
First, the configuration will be described.
The configuration of the vehicle seat in the first embodiment will be described by dividing it into [the overall configuration of the vehicle seat] and [the detailed configuration of the seat back portion].

[Overall structure of vehicle seat]
FIG. 1 is an overall perspective view illustrating a vehicle seat according to a first embodiment. Hereinafter, based on FIG. 1, the whole structure of the vehicle seat of Example 1 is demonstrated.

  As shown in FIG. 1, the vehicle seat 1 of the first embodiment includes a seat cushion portion 10 and a seat back portion 20.

  The seat cushion portion 10 is a so-called seating portion on which an occupant (not shown here) is seated. The seat cushion portion 10 has a recessed center so that an occupant can sit stably. Further, the seat cushion portion 10 is supported on the vehicle compartment floor 2 via the seat bracket 11 and is movable in the vehicle front-rear direction.

The seat back portion 20 is a so-called backrest that stands on the rear side 10 a of the seat cushion portion 10 and supports the back of an occupant seated on the seat cushion portion 10. Here, the seat back portion 20 is provided so as to be able to be tilted with respect to the seat cushion portion 10 via a hinge mechanism (not shown).
The seat back portion 20 includes a seat frame that is a skeleton member, a flexible seat pad, and a skin material. Then, a seat pad is attached around the seat frame and covered with a skin material. A headrest 12 that supports the head of the occupant is provided on the upper portion of the seat back portion 20.

[Detailed configuration of seat back]
2 to 4 are various views showing the seat back portion of the first embodiment. Hereinafter, based on FIGS. 2-4, the detailed structure of the seat back part of Example 1 is demonstrated.

As shown in FIG. 2, the seat back portion 20 has a main support portion 21 and a pair of side support portions 22 and 22. The main support portion 21 is a portion that is disposed at the center portion in the vehicle width direction and supports the body center portion of the seated passenger. The pair of side support portions 22, 22 are provided on both the left and right sides of the main support portion 21 in the vehicle width direction, and protrudes forward of the vehicle from the main support portion 21. That is, the pair of side support portions 22 and 22 are portions that respectively support the left and right sides of the center part of the seated occupant.
Here, the “occupant's body central portion” is a torso portion centered on the occupant's spine, so-called back and waist. In addition, “both left and right sides of the central part of the body” refers to the vicinity of the passenger's side, shoulders, arms, and the like.

  The seat back portion 20 has a vehicle vertical direction dimension H set to 700 mm from the rotational position 20a with respect to the seat cushion portion 10 to the upper end portion 20b where the headrest 12 is provided, and a vehicle width direction maximum dimension W is set to 500 mm. ing.

As shown in FIG. 2, the side support portion 22 is provided with a different hardness switching line 23 therein. The different hardness switching line 23 is a boundary line (hardness switching boundary) for switching the hardness (restitution coefficient) inside the side support portion 22.
Then, by the different hardness switching line 23, the soft hardness region portion 24 (set to a hardness lower than the hardness of the upper portion of the side support portion and the inner portion in the vehicle width direction on the upper portion of the side support portion and in the outer portion in the vehicle width direction. (Denoted by dots in the figure). That is, on the outer side in the vehicle width direction from the different hardness switching line 23, the inner part in the vehicle width direction from the different hardness switching line 23, the vehicle lower side from the different hardness switching line 23, and the main support portion 21, respectively. There is provided a soft hardness region 24 set to a lower hardness than the above hardness.
In the first embodiment, in the side support portion 22, the vehicle width direction inner side portion from the different hardness switching line 23 and the vehicle lower side portion from the different hardness switching line 23 are collectively referred to as “side support inner portion 22a”.
Here, the hardness of the main support portion 21 and the side support inner portion 22a is assumed to be the same, and is set to the same degree as the seat back portion of a general vehicle seat. That is, the main support portion 21 and the side support inner portion 22a are set to a hardness that does not easily deform even when pressed by the occupant. On the other hand, the hardness of the soft hardness region portion 24 is set to about half of the hardness of the main support portion 21 and the side support inner portion 22a. That is, the soft hardness region 24 is set to a hardness that can be deformed even with a light force when the occupant comes into contact. The hardness can be changed by changing the hardness of the seat pad attached around the seat frame.

As shown in FIG. 2, the soft hardness region portion 24 is a region from the upper end portion 20 b of the seat back portion 20 to the center portion in the vehicle vertical direction, that is, the height of the side support portion 22 in the vehicle vertical direction. It is provided in the upper part from half. Further, the lower end of the soft hardness region 24 is gradually inclined outward in the vehicle width direction as it goes downward of the vehicle. That is, among the different hardness switching lines 23 that define the soft hardness region 24, the lower end switching line 23a that defines the lower end portion is inclined so as to gradually spread outward in the vehicle width direction as it goes downward of the vehicle.
Here, the vehicle vertical minimum dimension H1 from the rotation position 20a to the lower end switching line 23a with respect to the seat cushion portion 10, that is, the dimension from the rotation position 20a to the outer end in the vehicle width direction of the lower end switching line 23a is set to 300 mm. ing. Further, the maximum vehicle vertical dimension H2 from the rotation position 20a to the lower end switching line 23a, that is, the dimension from the rotation position 20a to the inner end in the vehicle width direction of the lower end switching line 23a is set to 350 mm.

Further, as shown in FIG. 3, the soft hardness region portion 24 is gradually inclined outward in the vehicle width direction as the rear end portion moves toward the rear of the vehicle. That is, among the different hardness switching lines 23 that define the soft hardness region 24, the rear end switching line 23b that defines the vehicle rear end portion is inclined so as to gradually spread outward in the vehicle width direction toward the rear of the vehicle. ing.
Here, the minimum width W1 in the vehicle width direction of the main support portion 21 and the side support inner portion 22a is set to 360 mm, and the maximum width W2 in the vehicle width direction of the soft hardness region portion 24 is set to 70 mm.
The rear end switching line 23b is a straight line connecting the front surface 22b of the side support portion 22 facing the front of the vehicle and the side surface 22c in the vehicle width direction of the side support portion 22 when viewed in plan (see FIG. 3). As a result, as shown in FIG. 4, the soft hardness region portion 24 does not reach the rear surface 22 d of the side support portion 22 facing the vehicle rear.
Further, the opening angle of the rear end switching line 23b, that is, the opening angle θ (see FIG. 3) of the left and right different hardness switching lines 23 and 23 generated around the head top portion O of the occupant seated on the seat cushion portion 10 is 90 The angle is set to not more than ° (here, 80 ° to 90 °).

Next, the operation will be described.
First, “shoulder stretch operation” and “composition and problem of vehicle seat of comparative example” will be described, and then “shoulder stretch allowable action” in the vehicle seat of the first embodiment will be described.

[Stretching the shoulder]
FIG. 5 (a) is an explanatory view showing a shoulder stretching operation, and FIG. 5 (b) is an explanatory view showing an inversion angle of the scapula when the shoulder stretching operation is performed. The shoulder stretching operation will be described below with reference to FIG.

If the driving of the car is continued, the occupant (especially the driver) is forced to take a certain posture for a long time, the shoulder muscles are strengthened, and stiff shoulders and accumulation of fatigue occur. As shown in Fig. 5 (a), the shoulder stretching action that pulls both shoulders backward and brings the left and right shoulder blades closer together is effective in relieving stiff shoulders and recovering from fatigue. Is.
Here, when the shoulder is stretched, the shoulder pivots toward the back of the body around the top of the head O, and the arm pivots downward around the vehicle around the shoulder. As a result, the left and right shoulder blades at the base of the shoulder come close to each other.

  It has been found that when the adductor angle θ1 (see FIG. 5B) generated when the shoulder blades are brought close to about 10 ° to 15 °, a sufficient effect is obtained for the recovery of shoulder muscle fatigue. The “adductive angle” means a line α connecting the parietal portion O and the shoulder blade K of the scapula (protrusion that becomes the uppermost portion of the shoulder), and a line β passing through the parietal portion O and extending in the body side direction. Relative angle.

Further, in order to set the internal rotation angle θ1 to about 10 ° to 15 °, the shoulder movable range around the parietal portion O is 270 ° or more, that is, the parietal portion O of the non-movable region of the shoulder portion occurring behind the body. The surrounding opening angle θ2 needs to be 90 ° or less.
As a result, both shoulders can be pulled sufficiently rearward of the body, and an inward angle θ1 that is effective in recovering fatigue of shoulder muscles can be secured.

[Configuration and Problems of Vehicle Seat of Comparative Example]
FIG. 6 is an operation explanatory view showing a state in which the shoulder is stretched by sitting on the vehicle seat of the comparative example. Hereinafter, based on FIG. 6, the structure and subject of the vehicle seat of a comparative example are demonstrated.

The vehicle seat 100 of the comparative example shown in FIG. 6 includes a seat back portion 102 that supports the back of an occupant seated on the seat cushion portion 101. The seat back portion 102 includes a main support portion 103 at the center in the vehicle width direction and a pair of side support portions 104 provided on the left and right sides of the main support portion 103 and projecting forward of the main support portion 103. 104.
Further, in the vehicle seat 100 of this comparative example, the main support portion 103 and the pair of side support portions 104, 104 are all set to the same hardness. That is, the hardness is set such that the body pressure of the passenger is not easily deformed even when pressed by the passenger so that the body pressure of the passenger can be sufficiently supported.

  When the shoulder is stretched as shown in FIG. 5A in the state of being seated on the vehicle seat 100 of such a comparative example, the shoulder and arm come into contact with the side support portion 104. Here, since the side support part 104 is set to a hardness that does not easily deform even when pressed by the occupant, the side support part 104 is not easily deformed by a force that pulls the shoulder or the like backward. That is, as shown in FIG. 6, the side support portion 104 is in the way, and the shoulder movable area around the crown O is narrow.

  As described above, in the vehicle seat 100 of the comparative example, the side support portion 104 interferes when the shoulder is stretched, and the inward angle θ1 generated when the scapula is brought close cannot be sufficiently ensured. Stretching effective for recovery could not be performed.

[Shoulder stretch tolerance]
FIG. 7 is an operation explanatory view showing a state in which the shoulder is stretched by sitting on the vehicle seat of the first embodiment. FIG. 8 is an explanatory diagram showing a general distance between the vehicle seat and the compartment side wall. Hereinafter, based on FIG.7 and FIG.8, the shoulder stretch tolerance effect | action of Example 1 is demonstrated.

In the vehicle seat 1 of the first embodiment, the different hardness switching line 23 is set inside the side support portion 22, and the soft hardness is set to a relatively low hardness in the vehicle width direction outer upper portion than the different hardness switching line 23. A region portion 24 is provided.
Then, when the shoulder is stretched by pulling both shoulders rearward while sitting on the vehicle seat 1 as shown in FIG. 7, the shoulders and arms are in the vehicle width direction of the side support portion 22 as shown in FIG. Touch the outside. At this time, since the soft hardness region 24 is set at the upper portion of the side support portion 22 and at the outer portion in the vehicle width direction, the soft hardness region 24 is easily deformed by the pressing force of the shoulder or arm.

  Thereby, the side support part 22 does not obstruct the stretching operation of the shoulder part, and the occupant can easily move the arm and shoulder toward the back of the body. As a result, the adductor angle θ1 generated when the scapula is brought close can be sufficiently secured, and the shoulder can be stretched sufficiently.

On the other hand, the main support portion 21 at the center in the vehicle width direction and the side support inner portion 22a continuous from the main support portion 21 are set to the same degree of hardness as a seat back portion of a general vehicle seat and pressed by the occupant. Even if it does not deform easily.
Therefore, when the shoulder is stretched, for example, even if the back is warped and a pressing force is applied to the main support portion 21 or the like, the main support portion 21 and the side support inner portion 22a are not easily deformed. Thereby, a passenger | crew can be supported stably and the stretching operation | movement of a shoulder part can be performed stably and fully. Further, even when the lateral G occurs during traveling, the occupant can be sufficiently supported, and the so-called lateral G hold performance can be prevented from being impaired.

Further, in the first embodiment, among the different hardness switching lines 23 set inside the side support portion 22, the rear end switching line 23b that partitions the vehicle rear end portion of the soft hardness region portion 24 is directed toward the rear of the vehicle. As it is gradually inclined, it spreads outward in the vehicle width direction. Therefore, the rear end portion of the soft hardness region portion 24 is gradually inclined outward in the vehicle width direction toward the rear of the vehicle.
Here, when the shoulder is stretched, the shoulder rotates around the head O toward the back of the body. That is, as shown in FIG. 7, the shoulders and arms are set to be inclined outward in the vehicle width direction toward the rear of the vehicle because the outer side in the vehicle width direction is inclined toward the back of the body around the top O. The different hardness switching line 23 is set along the shoulder and arm during the shoulder stretching operation.
Thereby, the stretch operation of the shoulder portion is further prevented from being hindered, the stretch operation of the shoulder portion can be sufficiently performed, and the stretch effect can be improved.

  Moreover, in the first embodiment, the opening angle θ of the left and right rear end switching lines 23b and 23b set around the head top portion O of the occupant seated on the seat cushion portion 10 is set to 90 ° or less. For this reason, the adductor angle θ1 (see FIG. 5B) generated when the scapula is brought closer can be set to 10 ° to 15 °, which has been found to be effective in recovering fatigue of the shoulder muscles. . Thereby, the stretch effect can be further improved.

  As shown in FIG. 8, a vehicle compartment wall 3 having a vehicle side door, a side pillar, and the like is set on the side of the vehicle seat 1. Here, in order to make the vehicle compact, it is general that the gap X between the vehicle seat 1 and the vehicle compartment wall 3 is hardly ensured. That is, the side of the vehicle seat 1 is a narrow space with little space for extending an arm or pulling a shoulder.

On the other hand, in the vehicle seat 1 of the first embodiment, the side support portion 22 sets the soft hardness region portion 24 from the upper end portion 20b to the center portion of the seat back portion 20, and the soft hardness region portion 24. The lower end switching line 23a of the different hardness switching line 23 that divides the lower end of the vehicle is set so as to incline outward in the vehicle width direction toward the vehicle lower side.
That is, by performing the stretching operation of the shoulder portion, the soft hardness region portion 24 can be set in a range in which the arm contacts when the arm rotates downwardly around the shoulder.

  As a result, when the shoulder is stretched while sitting on the vehicle seat 1, the soft hardness region 24 of the side support portion 22 can be deformed along with the movement of the arm. For this reason, even if the gap X between the vehicle seat 1 and the passenger compartment wall 3 is narrow, the shoulder can be sufficiently stretched, and the posture (shoulder blade is effective for recovery from fatigue of the shoulder muscles). A posture in which the adduction angle θ1 generated when the angle is approached is 10 ° to 15 °).

  In addition, the physique of the occupant differs because the lower end switching line 23a of the different hardness switching line 23 that divides the lower end portion of the soft hardness region portion 24 is set so as to be inclined outward in the vehicle width direction toward the vehicle lower side. Even if it is a case, the soft-hardness area | region part 24 can be deformed at the time of stretching of a shoulder part, and it can prevent that the side support part 22 inhibits a stretching operation | movement.

Next, the effect will be described.
In the vehicle seat of the first embodiment, the effects listed below can be obtained.

(1) In the vehicle seat 1 comprising: a seat cushion portion 10 on which an occupant sits; and a seat back portion 20 that stands on the rear side of the seat cushion portion 10 and supports the occupant.
The seat back portion 20 is provided on the left and right sides of the main support portion 21 at the center in the vehicle width direction, and a pair of side support portions 22 and 22 projecting forward of the vehicle from the main support portion 21. And having
Inside the side support part 22, a soft hardness region part in which the upper part of the side support part 22 and the outer part in the vehicle width direction is set to a hardness lower than the hardness of the upper part of the side support part 22 and the inner part in the vehicle width direction 24, a different hardness switching line 23 serving as a hardness switching boundary is provided.
Thereby, even if it sits on the seat cushion part 10, it becomes easy to perform the operation | movement which pulls an arm or a shoulder back to a body, and the stretch operation | movement of a shoulder part can fully be performed.

(2) The different hardness switching line (rear end switching line) 23b that defines the vehicle rear end portion of the soft hardness region portion 24 is configured to incline outward in the vehicle width direction toward the rear of the vehicle.
As a result, the rear end switching line 23b can be set along the shoulder and arm during the stretching operation of the shoulder. In addition to the effect (1), the stretching operation of the shoulder is further prevented from being hindered. A sufficient stretch effect can be obtained.

(3) A different hardness switching line (rear end switching line) that divides the vehicle rear end portions of the left and right soft hardness region portions 24, 24 set around the head top portion O of the occupant seated on the seat cushion portion 10. ) The opening angle θ of 23b and 23b is set to 90 ° or less.
As a result, in addition to the effect of (1) or (2), it is possible to take a posture in which the adductor angle θ1 that is effective in recovering fatigue of shoulder muscles is 10 ° to 15 °, further improving the stretch effect can do.

(4) The side support portion 22 sets the soft hardness region portion 24 from the upper end portion 20b to the center portion of the seat back portion 20, and defines a vehicle lower end portion of the soft hardness region portion 24. The hardness switching line (lower end switching line) 23a is configured to be inclined outward in the vehicle width direction toward the vehicle lower side.
Accordingly, in addition to at least one of the effects (1) to (3), even if the gap X between the vehicle seat 1 and the passenger compartment wall 3 is narrow, the soft hardness region portion 24 can be used for the movement of the arm. It can be deformed along and the shoulder can be stretched sufficiently.

  As mentioned above, although the vehicle seat of this invention has been demonstrated based on Example 1, about a concrete structure, it is not restricted to this Example, The summary of the invention which concerns on each claim of a claim Unless it deviates, design changes and additions are allowed.

  In Example 1, the vehicle vertical dimension H of the seat back portion 20 is 700 mm, the vehicle width direction maximum dimension W is 500 mm, and the vehicle vertical minimum dimension H1 from the rotational position 20 a to the soft hardness region 24 is 300 mm. The vehicle vertical maximum dimension H2 from the moving position 20a to the soft hardness region 24 is 350 mm, the vehicle support width direction minimum dimension W1 of the main support 21 and the side support inner portion 22a is 360 mm, and the soft hardness region 24 is the maximum in the vehicle width direction. An example in which the dimension W2 is set to 70 mm is shown. However, the present invention is not limited to this, and can be set as appropriate according to the size of the vehicle, the space in the vehicle interior, the size of the vehicle seat 1, and the like.

  Moreover, although the soft hardness area | region part 24 makes hardness different from the main support part 21 grade | etc., By changing the hardness of the seat pad attached to the circumference | surroundings of a seat frame, it is not restricted to this. For example, after applying the same seat pad to the soft hardness region 24, the hardness may be varied by providing a large number of slits and holes.

  Furthermore, in Example 1, although the example which sets the hardness of the main support part 21 and the side support inner part 22a equally was shown, you may change these hardness suitably. In any case, the soft hardness region 24 is set to have the lowest hardness.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 10 Seat cushion part 12 Headrest 20 Seat back part 21 Main support part 22 Side support part 22a Side support inner part (a vehicle width direction inner side part and vehicle lower side part from a different hardness switching line)
23 Different hardness switching line 23a Lower end switching line 23b Rear end switching line 24 Soft hardness region portion

Claims (3)

In a vehicle seat comprising: a seat cushion portion on which an occupant sits; and a seat back portion that stands on the rear side of the seat cushion portion and supports the occupant;
The seat back portion includes a main support portion at a vehicle width direction center portion, and a pair of side support portions provided on the left and right sides of the main support portion and projecting forward of the vehicle from the main support portion,
Inside the side support part, the upper part of the side support part and the outer part in the vehicle width direction become a soft hardness region part set to a hardness lower than the hardness of the upper part of the side support part and the inner part in the vehicle width direction. Is provided with a different hardness switching line as a hardness switching boundary ,
The side support portion sets the soft hardness region portion from an upper end portion to a center portion of the seat back portion, and a different hardness switching line that defines a vehicle lower end portion of the soft hardness region portion is provided below the vehicle. A vehicle seat that is inclined outward in the vehicle width direction as it goes . The vehicle seat according to claim 1,
A vehicle seat, wherein a different hardness switching line defining a vehicle rear end portion of the soft hardness region portion is inclined outward in the vehicle width direction toward the vehicle rear. In the vehicle seat according to claim 2,
An opening angle of the right and left different hardness switching lines set around the head of the occupant seated on the seat cushion portion is set to 90 ° or less.