JP2015159905A - Straddling type seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straddling type seat having a high heat radiation effect from which a good seating feeling can be acquired.SOLUTION: A seat 1 for a vehicle includes an inside cushion member 4 of high hardness and an outside cushion member 5 of lower hardness than the inside cushion member 4. The inside cushion member 4 is disposed inside the outside cushion member 5, and a gap is formed between the top face which is a seating side of a seated occupant in the inside cushion member 4, and the underside of the outside cushion member 5 which is opposed to the top face. Passing air through the gap exerts a radiation effect, and imparts a good seating effect to the seated occupant.

Description

  The present invention relates to a straddle-type seat, and more particularly, to a straddle-type seat provided with an inner and outer two-layer cushion member.

When the cushion member provided in the skin of the seat has a low hardness, the cushioning is deteriorated due to the sag due to long-term use. On the other hand, when the cushion member has a high hardness, the durability performance is high, but the fit feeling is low and conflicting. Further, when the cushion member has a single-layer structure, it is difficult to give a comfortable seating feeling to the seated person.
As a technique for improving the durability performance while improving the seating feeling, Patent Document 1 discloses that in a motorcycle seat or a saddle-type boat seat, the cushion member is configured not in a single layer structure but in an inner and outer two layers. A technique for adjusting the thickness and hardness of the paper is disclosed.

  In the cushion member constituted by the inner and outer two layers, the inner cushion member is formed thicker than the outer cushion member. In addition, the inner cushion member is formed of a net-like body made of a gel-like viscoelastic type thermoplastic elastomer, while the outer cushion member is formed of urethane, and these are configured to have different hardnesses. ing.

  Also, in the same manner as above, cushion members having different hardnesses are arranged on the inner and outer layers of the vehicle seat, and a gap is formed between the opposing side surfaces to disperse the load applied by the seated person. A technique is known (for example, Patent Document 2).

JP 2007-175482 A Microfilm of Japanese Utility Model No. 56-196838 (Japanese Utility Model Publication No. 58-102652)

However, in the seat described in Patent Document 1, the inner and outer two layers constitute a cushion member, but there is no space between the two layers and there is no gap between the seat and the heat transmitted from the seated person to the seat and the seating. The heat dissipation effect of frictional heat generated between the person's buttocks and the sheet was low.
Moreover, in the inner and outer two-layer cushion member described in Patent Document 2, since a gap is formed between the opposing side surfaces, a heat dissipation effect can be achieved. However, on the surface facing the top and bottom where the load from the seated person is the highest, the cushion member of the inner and outer layers is formed in contact with no gap so that a sufficient heat dissipation effect cannot be obtained. The seat was overheated and a good seating feeling could not be obtained.

  Accordingly, a vehicle seat or other straddle-type seat that has a high heat dissipation effect and provides a good seating feeling has been desired.

  This invention is made | formed in view of said subject, and the objective of this invention is to provide the straddle-type sheet | seat which has a high heat dissipation effect and a favorable seating feeling is obtained.

  According to the straddle-type seat according to the first aspect of the present invention, in the straddle-type seat provided with a high-hardness inner cushion member and an outer cushion member having a lower hardness than the inner cushion member, The inner cushion member is disposed on the inner side of the outer cushion member, and a gap is formed between an upper surface of the inner cushion member on the seating side of an occupant and a lower surface of the outer cushion member facing the upper surface. It is solved by being formed.

  In the above configuration, the cushion member is arranged in the inner and outer two layers, and further, a gap is formed between the upper surface of the inner cushion member on the seating side of the occupant and the lower surface of the outer cushion member facing the upper surface. Further, the air permeability in the seat is increased and the heat dissipation is increased, so that the temperature rise of the seat can be suppressed, and a good seating feeling can be given to the seated person.

Further, it is preferable that the gap extends to a side surface side of the inner cushion member.
If it is the said structure, since the clearance gap has extended to the side surface side of the inner side cushion member, and breathability can be improved further, a favorable seating feeling can be provided to a seated person.

In addition, the inner cushion member has an inner corner portion at an intersection between the upper surface and the side surface, and the outer cushion member has a gap at a portion facing the inner corner portion than the other portion. It is preferable that the outer relief portion formed to be wide is formed.
In the above configuration, in the outer cushion member, since the outer relief portion is formed at a position facing the inner corner portion of the inner cushion member, mutual interference between the inner cushion member and the outer cushion member can be suppressed, and the seating can be performed. Can reduce discomfort.

Further, the inner corner portion is formed at an intersection portion of the upper surface, the side surface, and the front surface or the rear surface of the inner cushion member, and the outer relief portion is formed at a portion facing the inner corner portion. It is preferable.
In the above configuration, the outer relief portion is formed at a portion facing the inner corner portion formed at the intersection of the upper surface, the side surface, and the front surface or the rear surface of the inner cushion member. Mutual interference can be suppressed, and when the seat receives a load in the front-rear direction from the seated person, the uncomfortable feeling of the seated person can be reduced.

Further, the outer cushion member has an outer corner portion at a portion facing the intersecting portion between the upper surface and the side surface of the inner cushion member, and the inner cushion member has a portion facing the outer corner portion, It is preferable that an inner relief portion formed so that the gap is wider than other portions is formed.
In the above configuration, in the inner cushion member, the inner relief portion is formed at a position facing the outer corner portion of the outer cushion member, so that the inner cushion member and the outer cushion member can interfere with each other. Can be reduced.

Further, the inner cushion member is preferably an open cell body.
Thus, when the inner cushion member is an open-cell body, air can be passed through the inner cushion member, and air can be prevented from staying in the gap between the inner cushion member and the outer cushion member. You can avoid giving.

The inner cushion member may be a mesh body.
When the inner cushion member is a net-like body as described above, air can be passed through the inner cushion member and air can be prevented from staying in the gap between the inner cushion member and the outer cushion member. It can avoid giving a strange feeling to a person.

Further, the inner cushion member includes a plurality of cushion portions, and the outer cushion member has an extending portion extending between the plurality of cushion portions, and the extending portion is more than the inner cushion member. A low hardness is preferred.
In said structure, an inner side cushion member consists of a some cushion part, an outer side cushion member has an extension part extended between some cushion parts, and an extension part is lower hardness than an inner side cushion member. Thus, the plurality of cushion portions can be positioned by the extension portions entering the gaps between the plurality of cushion portions constituting the inner cushion member.

Furthermore, it is preferable that another gap is formed between the extension portion and the plurality of cushion portions.
As described above, when another gap is formed between the extension portion and the plurality of cushion portions, the followability of the inner cushion member when getting on and off or with a foot is improved.

Further, the extension portion has another corner portion at a portion facing the plurality of cushion portions, and the plurality of cushion portions have a portion other than the other gap at a portion facing the other corner portion. It is preferable that another relief portion formed so as to be wider than the portion is formed.
In the above configuration, the other flank portion that avoids interference with the other corner portion is formed in the portion facing the other corner portion, so that interference by the other corner portion can be avoided, thereby making the seated person feel uncomfortable. Therefore, stable positioning can be performed without changing the shape of the extending portion.

According to the first aspect of the present invention, by increasing the air permeability in the seat, the heat dissipation is enhanced and the temperature rise of the seat can be suppressed, so that a good seating feeling can be given to the seated person.
According to the invention of claim 2, since the gap extends to the side surface side of the inner cushion member and the air permeability can be further enhanced, a good seating feeling can be given to the seated person.
According to invention of Claim 3 thru | or 5, the mutual interference with an inner side cushion member and an outer side cushion member can be suppressed, and a discomfort of a seated person can be reduced.
According to the invention of claim 6 or 7, since it is possible to prevent air from staying in the gap between the inner cushion member and the outer cushion member, it is possible to avoid giving the seated person an uncomfortable feeling.
According to the invention of claim 8, the plurality of cushion portions can be positioned by the extension portions entering the gaps between the plurality of cushion portions constituting the inner cushion member.
According to the ninth aspect of the present invention, the followability of the inner cushion member when getting on and off or with a foot is improved.
According to the invention of claim 10, the sense of discomfort of the seated person can be reduced, and stable positioning by the extending portion is possible.

It is a perspective view of a vehicle seat. It is a figure which shows the vehicle seat, and is a figure which shows the II-II cross section of FIG. It is a figure which shows a vehicle seat, and is a figure which shows the III-III cross section of FIG. It is a figure which shows the vehicle seat which concerns on a 1st modification provided with the outer side cushion member which has an escape part, and is a figure which shows the III-III cross section of FIG. It is a figure which shows the vehicle seat which concerns on the 1st modification of the state crushed by the load from a seated person, and is a figure which shows the III-III cross section of FIG. It is a figure which shows the vehicle seat which concerns on a 2nd modification, and is a figure which shows the III-III cross section of FIG. It is a figure which shows the vehicle seat which concerns on a 3rd modification, and is a figure which shows the III-III cross section of FIG. It is a top view which shows the state which removed the skin and the outer side cushion member in the vehicle seat shown by FIG.

  Hereinafter, vehicle seats 1, 10, 11, and 12 used for a motorcycle will be described as an embodiment of a straddle-type seat according to the present invention with reference to the drawings. In the following description, the front-rear direction refers to the front-rear direction viewed from the seated person when the seated person is seated on the seat, and the up-down direction refers to the up-down direction of the seat.

  First, the vehicle seat 1 will be described with reference to FIGS. Here, FIG. 1 is a perspective view of the vehicle seat 1, FIG. 2 is a diagram showing the vehicle seat 1, a diagram showing a II-II section of FIG. 1, and FIG. 3 shows the vehicle seat 1. It is a figure and is a figure which shows the III-III cross section of FIG.

  As shown in FIG. 2, the vehicle seat 1 is a base member of the vehicle seat 1, a seat bottom plate 2 made of PP (Poly Propylene), an inner cushion member 4 placed on the seat bottom plate 2, a seat The outer cushion member 5 is placed on the bottom plate 2 and covers the upper and side surfaces of the inner cushion member 4, and the outer skin 3 that covers the outer cushion member 5 and is stitched to the seat bottom plate 2.

The inner cushion member 4 is a mesh body made of a thermoplastic polyester elastomer or the like. Thus, the inner side cushion member 4 has air permeability by being a net-like body, and has a function of allowing air to pass without staying in the gap 6 when the volume of the gap 6 described later changes. Further, the inner cushion member 4 is not limited to a net-like body made of a polyester elastomer or the like as long as it has air permeability, and may be urethane or the like made of an open-cell body, for example.
Further, as shown in FIG. 3, the inner cushion member 4 is formed with a corner portion 4a, which will be described later, as an inner corner portion at a portion where the upper surface and the side surface on the seating side intersect.

  Further, the inner cushion member 4 includes a front cushion portion 40 disposed in the foremost portion of the portion constituting the inner cushion member 4, a middle cushion portion 41 disposed behind the front cushion portion 40, and a middle cushion. The rear cushion part 42 disposed behind the part 41 is composed of three parts having different hardnesses.

The front cushion portion 40 is a portion located below the thigh of a seated person (also referred to as an occupant) A shown in FIG. 5 and is formed with low hardness. The middle cushion part 41 is a part located below the sciatic bone of the seated person A, and is formed with medium hardness. The rear cushion portion 42 is a portion located below and behind the buttocks of the seated person A, and is formed with high hardness. Details of these functions and operations will be described later.
The inner cushion member 4 may be bonded on the seat bottom plate 2 or may be mounted without being bonded.

The outer cushion member 5 is made of urethane or the like, and is integrally formed with an upper cushion 50 above the inner cushion member 4 and side cushions 51 on both sides of the inner cushion member 4.
In particular, the seat cushion A can be provided with a comfortable seating feeling by making the outer cushion member 5 lower in hardness than the inner cushion member 4 and reducing the resilience.
The outer cushion member 5 is disposed such that a gap 6 is formed between the upper surface and the side surface of the inner cushion member 4. Furthermore, the corner | angular part 5a as an outer corner | angular part is formed in the part which the upper cushion 50 and the side part cushion 51 cross | intersect, and is opposite to the corner | angular part 4a.

  The skin 3 is made of synthetic leather or the like formed by sewing a plurality of pieces, and covers the surface of the outer cushion member 5. In particular, the epidermis 3 shown in FIG. 3 is composed of an upper epidermis 30 and two side epidermis 31 sewn by stitch portions 3 a on both sides of the upper epidermis 30.

  The thigh of the seated person A is displaced downward when the two-wheeled vehicle is stopped when the foot is put on the road surface, and is displaced upward when the two-wheeled vehicle is operated to put the foot on the step. As described above, since the front cushion portion 40 that contacts the thigh is formed with low hardness and the rebound resilience is small, it is suppressed that the thigh is prevented from moving up and down. The mutual movement of the legs is preferably achieved.

  Further, since the middle cushion portion 41 is formed to a medium hardness and the rebound resilience is moderate, the middle cushion portion 41 is prevented from giving fatigue to the seated person A during long-time driving, During the short-time driving, the middle cushion portion 41 can give the seated person A a sense of stability of sitting, and the ride comfort is improved.

  In addition, since the rear cushion portion 42 is formed with high hardness, it is possible to increase the rebound resilience against the sinking of the heel portion obliquely downward and rearward during acceleration operation, and the riding comfort is improved.

  In particular, when the front cushion portion 40 is completely separated from the middle cushion portion 41 or is formed so that only the lower portion is connected and the upper portion is separated, at least the upper portion of the front cushion portion 40 is in relation to the middle cushion portion 41. Can be independently transformed. Thus, since the front cushion part 40 can be deformed independently with respect to the middle cushion part 41, the rebound resilience from the front cushion part 40 to the load from the thigh when the foot is attached can be suppressed. Property is improved.

As described above, in the vehicle seat 1, the gap 6 is formed between the inner cushion member 4 and the outer cushion member 5. The gap 6 suppresses the generation of heat due to the friction between the inner cushion member 4 and the outer cushion member 5, and air permeability is provided by the space in the gap 6. For this reason, when the seated person A's waist is separated from the vehicle seat 1 due to vibration during driving or the like, or during non-driving, the outer cushion member 5 is separated from the inner cushion member 4 and a gap 6 is formed so that the air flow is generated. Therefore, it is possible to suitably dissipate heat transmitted from the contact portion such as the buttocks and thighs of the seated person A, and to improve riding comfort.
Furthermore, the outer cushion member 5 is easily bent toward the inner cushion member 4 due to the gap 6, and the contact area with the seated person A is increased by bending, so that the body pressure applied to the seated person A from the outer cushion member 5 is increased. Can be dispersed, and ride comfort can be improved.
The inner cushion member 4 and the outer cushion member 5 only need to have a gap 6 formed in at least a part between the upper and lower portions, and may overlap or be bonded without being separated in other portions. Good.

<First Modification>
In the vehicle seat 1, the outer cushion member 5 may come into contact with the corner portion 4 a when a load inclined to the horizontal plane is applied to the inner cushion member 4 when the occupant A gets on and off and with a foot. In this case, the reaction force received from the corner portion 4a through the outer cushion member 5 and the outer skin 3 may give the seated person A a foreign body feeling.

  A vehicle seat 10 according to a first modification based on this problem will be described with reference to FIGS. 4 and 5. Here, FIG. 4 is a view showing a vehicle seat 10 according to a modified example including the outer cushion member 5 having the relief portion 5b, and is a view showing a section taken along the line III-III in FIG. 1, and FIG. It is a figure which shows the vehicle seat 10 of the state crushed with the load from, and is a figure which shows the III-III cross section of FIG. In addition, below, the same code | symbol is used about the content which overlaps with the vehicle seat 1 as described in the said embodiment, the description is abbreviate | omitted, and a difference is clarified.

  As illustrated in FIG. 4, the vehicle seat 10 includes an outer cushion member 5 having an escape portion 5 b that is a groove extending in the front-rear direction.

The escape portion 5b corresponds to an example of an outer escape portion in the claims, and its cross section is formed in a V shape. The escape portion 5b is a position facing the corner portion 4a where the upper surface and the side surface of the inner cushion member 4 cross each other, and is formed at a position facing the stitch portion 3a. The upper cushion 50 and the side cushion 51 are slanted. It is formed to be divided into
Thus, by forming the escape portion 5b in the outer cushion member 5, as shown in FIG. 5, even when the seated person A straddles the vehicle seat 10 with his / her foot on the road surface, the corner portion The outer cushion member 5 does not come into contact with 4a. For this reason, it is possible to avoid causing the seated person A to feel uncomfortable when the seated person A gets on and off the foot and when he / she is on the feet.
Further, since the relief portion 5b is formed at a position facing the stitch portion 3a, it is possible to prevent a high pressure from being applied to the stitch portion 3a and to suppress wear of the stitch portion 3a due to deterioration over time.

<Second Modification>
In the escape portion 5b, the cross section is described as being formed in a V shape, but the present invention is not limited to this embodiment.
For example, as shown in the left side of FIG. 6 as the vehicle seat 11 according to the second modification, the vehicle seat 11 may include an outer cushion member 5 having a relief portion 5c formed on a cross-section arc. Here, FIG. 6 is a view showing the vehicle seat 11 according to the second modification, and is a view showing a III-III cross section of FIG. The escape portion 5c corresponds to another example of the outer escape portion in the claims.
Further, as shown on the right side of FIG. 6, in the inner cushion member 4, a relief portion 4 c formed in a chamfered shape is formed in a portion facing the corner portion 5 a formed inside the outer cushion member 5. May be. The escape portion 4c corresponds to the inner escape portion in the claims.
Even when the outer cushion member 5 having the relief portion 5c formed as described above or the inner cushion member 4 having the relief portion 4c is provided, the same effect as that of the vehicle seat 10 according to the first modification can be obtained. .

Further, the corner portions 4a and 5a extending in the front-rear direction and the escape portions 5b and 5c facing the corner portions 4a and 5c have been described. However, the present invention is not limited to this configuration, and is not shown in the drawing extending in the sheet width direction. You may make it form the escape part which is not shown facing a corner | angular part.
That is, in the crossing portion of the upper surface of the inner cushion member 4 and the front surface or the rear surface, and also in the outer cushion member 5 facing the same, a relief portion (not shown) facing the corner portion (not shown) is formed in the same manner as in the above embodiment. You may make it form. In particular, it is preferable that the outer relief portion is formed at a portion facing the inner corner portion at the intersection of the upper surface, the side surface, and the front surface or the rear surface of the inner cushion member 4.
In this way, even when the load applied from the seated person A changes in the front-rear direction during deceleration during acceleration, there is a sense of incongruity due to the application of local stress due to interference between the inner cushion member 4 and the outer cushion member 5. Can be suppressed.

<Third Modification>
As shown in FIG. 7, the vehicle seat 12 according to the third modification includes a left middle cushion portion 41 </ b> L and a right middle cushion portion 41 </ b> R that are divided with a gap 6 a at the center in the seat width direction. . Here, FIG. 7 is a view showing the vehicle seat 12 according to the third modification, and is a view showing a III-III cross section of FIG.

Like the vehicle seat 12, the left middle cushion portion 41 </ b> L and the right middle cushion portion 41 </ b> R are disposed with a gap 6 a therebetween so that the left middle cushion portion 41 </ b> L and the right middle cushion portion 41 </ b> R are independently deformed. It becomes possible, and the followability with the left middle cushion part 41L or the right middle cushion part 41R with respect to the deformation of the outer cushion member 5 becomes good.
Therefore, since the left middle cushion portion 41L and the right middle cushion portion 41R are independently deformed and follow the outer cushion member 5 that is particularly deformed when the occupant A gets on and off and with a foot, the inner cushion member 4 The generation of a large reaction force is suppressed, and the ride comfort is improved.
In particular, by setting the hardness of the extending portion 52 to be lower than the hardness of the inner cushion member 4, the followability of the inner cushion member 4 becomes good.

  The outer cushion member 5 is formed with a wall-like extending portion 52 that extends downward so as to pass through the gap 6a. By forming the extending portion 52 in this way, the right middle cushion portion 41R and the left middle cushion portion 41L are within a predetermined range surrounded by the extending portion 52 and the side cushion 51, and the right The positioning of the middle cushion portion 41R and the left middle cushion portion 41L can be easily performed, so that the assemblability can be improved and the displacement can be prevented.

  Furthermore, when driving on a curve or on a road surface with unevenness, the outer cushion member 5 is displaced from the inner cushion member 4 by the load applied to the vehicle seat 12 in each direction from the seated person A. It will move. In such a state, the extension portion 52 contacts the right middle cushion portion 41R and the left middle cushion portion 41L, thereby causing the right middle cushion portion 41R and the left middle cushion portion 41L to follow the movement of the outer cushion member 5. And a good seating feeling.

Furthermore, a corner portion 50a as another corner portion is formed at a portion where the extending portion 52 and the upper cushion 50 intersect. Further, each of the left middle cushion portion 41L and the right middle cushion portion 41R has a chamfered shape as another relief portion at a portion that intersects the surface and the upper surface that are in contact with the gap 6a and that faces the corner portion 50a. The relief portion 4b is formed.
Thus, even if the corner portion 50a is formed on the outer cushion member 5, the extending portion 52 is deformed by the relief portion 4b being formed in the left middle cushion portion 41L and the right middle cushion portion 41R. In this case, the left middle cushion portion 41L and the right middle cushion portion 41R can be prevented from coming into contact with the corner portion 50a. For this reason, even if the extension part 52 is a state which deform | transforms with the load from the seated person A, it can avoid making the seated person A uncomfortable.

Further, as shown in FIG. 8, the vehicle seat 12 may include an inner cushion member 4 that is not limited to the left and right but is divided into front and rear. Here, FIG. 8 is a plan view showing a state in which the skin 3 and the outer cushion member 5 are removed from the vehicle seat 12 according to the third modified example shown in FIG.
Specifically, the inner cushion member 4 includes a right front cushion portion 40R, a right middle cushion portion 41R, and a right rear cushion portion 42R in order from the front to the rear on the right side, and a left front cushion portion 40L in order from the front to the rear on the left side. The left middle cushion portion 41L and the left rear cushion portion 42L are provided.

  The inner cushion member 4 configured as described above can improve the legging property by forming the gap 6a between the members in the same manner as described above. Further, if the extending portion 52 is formed so as to pass through the gap 6a as described above, the right front cushion portion 40R, the right middle cushion portion 41R, the right rear cushion portion 42R, the left front cushion portion 40L, the left middle cushion portion 41L. And the position shift of the left rear cushion part 42L can be prevented.

  Although an example of the present invention has been shown in the above embodiment, the present invention may be combined with various forms so as to be optimal for the implementation without departing from the spirit thereof, and can be changed or improved. Of course, the present invention includes equivalents thereof.

  Although the example which divided | segmented the inner side cushion member which concerns on the said embodiment into two in the sheet | seat width direction and the modification divided | segmented into three in the front-back direction were demonstrated, this invention is not limited to these examples. For example, (1) a configuration in which only the front and rear portions are divided without dividing in the seat width direction, and (2) only the front cushion portion is divided in the seat width direction, and the middle cushion portion and the rear cushion portion are not divided in the seat width direction. (3) Only the front cushion part and the middle cushion part may be divided in the seat width direction, and the rear cushion part may not be divided in the seat width direction. The number of divisions can also be set arbitrarily.

  Further, in the above description, the relief portion has been described by taking a groove having a V-shaped cross section, a chamfered shape, or a circular arc shape as an example, but it may be a curved surface, a through hole, or a concave shape, and is more spatial than other portions. The shape is not limited as long as it is formed to have a large spread and interference with the corners can be avoided.

  For example, in the above-described embodiment, a vehicle seat mainly used for a motorcycle has been described as an example, but application of the present invention is not limited to a vehicle seat for a motorcycle. For example, the straddle-type seat according to the present invention is applicable to a snowmobile, a water bike, a three-wheeled buggy, or a construction machine seat.

  Further, in the above embodiment, an example in which only the front cushion member on the driver side of the tandem seat has two upper and lower layers has been shown, but for example, the passenger side cushion member has two upper and lower layers. Alternatively, both may have the same configuration.

1, 10, 11, 12 Vehicle seat 2 Seat bottom plate 3 Skin 30 Upper skin 31 Side skin 3a Stitch 4 Inner cushion member 4a Corner 4b, 4c Escape 40 Front cushion 40R Right front cushion 40L Left front cushion 41 Middle Cushion part 41R Right middle cushion part 41L Left middle cushion part 42 Rear cushion part 42R Right rear cushion part 42L Left rear cushion part 5 Outer cushion member 5a Corner part 5b, 5c Escape part 50 Upper cushion 50a Corner part 51 Side cushion 52 Extension Exit 6,6a Clearance A Seated person

Claims (10)

In a straddle-type seat provided with a high hardness inner cushion member and an outer cushion member lower in hardness than the inner cushion member,
The inner cushion member is disposed inside the outer cushion member;
A straddle-type seat, wherein a gap is formed between an upper surface of the inner cushion member that is a seating side of an occupant and a lower surface of the outer cushion member facing the upper surface.   The straddle-type seat according to claim 1, wherein the gap extends to a side surface side of the inner cushion member. The inner cushion member has an inner corner at the intersection of the upper surface and the side surface,
The outer cushion member is formed with an outer relief portion formed at a portion facing the inner corner portion so that the gap is wider than other portions. The straddle-type seat described in 1. The inner corner is formed at the intersection of the upper surface, the side surface, and the front or rear surface of the inner cushion member,
The straddle-type seat according to claim 3, wherein the outer relief portion is formed in a portion facing the inner corner portion. The outer cushion member has an outer corner portion at a portion facing an intersecting portion between the upper surface and the side surface of the inner cushion member,
The inner cushion member is formed with an inner relief portion formed in a portion facing the outer corner portion so that the gap is wider than other portions. The straddle-type seat according to any one of the above.   The straddle-type seat according to any one of claims 1 to 5, wherein the inner cushion member is an open cell body.   The straddle-type seat according to any one of claims 1 to 5, wherein the inner cushion member is a net-like body. The inner cushion member is composed of a plurality of cushion portions,
The outer cushion member has an extending portion extending between the plurality of cushion portions,
The straddle-type seat according to any one of claims 1 to 7, wherein the extending portion has a lower hardness than the inner cushion member.   The straddle-type seat according to claim 8, wherein another gap is formed between the extension portion and the plurality of cushion portions. The extending portion has another corner portion in a portion facing the plurality of cushion portions,
The plurality of cushion parts, wherein another relief part formed so that the other gap is wider than another part is formed in a part facing the other corner part. Item 10. A straddle-type seat according to item 9.

Images