JP2023127359A - Vehicle seat cushion and vehicle seat - Google Patents

Abstract

To ensure good seating comfort by preventing a crewman's body from wobbling.SOLUTION: In a seat cushion 12 of a vehicle seat 10, a spring unit 34 is located on a lower side of a cushion pad 30, and the spring unit 34 is provided with a spring body 50 having a rebound resilience modulus higher than the cushion pad 30. The spring body 50 has both ends in a front-back direction locked to the cushion pad 30, and tightly contacts and covers an undersurface of the cushion pad 30. Consequently, an apparent bound resilience modulus of the cushion pad 30, which is felt by the crewman when seating can be increased, and when the crewman seats and the cushion pad is deformed downward, deformation of the cushion pad is suppressed and the rebound resilience modulus is increased, whereby the crewman's body is prevented from wobbling and good seating comfort can be ensured.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle seat cushion and a vehicle seat.

Patent Document 1 discloses a vehicle seat. In this vehicle seat, a front rod and a rear rod are arranged in pairs on a cushion frame of a seat cushion. Further, the seat cushion includes a seat pad made of an elastic synthetic resin material such as polyurethane foam, and the seat pad is disposed between the front rod and the rear rod.

Further, a cloth spring is disposed on the seat cushion, and the cloth spring has a thin sheet-like cloth spring body supported by a front rod and a rear rod. As a result, in the vehicle seat, when the occupant is seated, the cloth spring body is bent downward due to the load, thereby suppressing displacement of the occupant's posture.

JP2019-69668A

By the way, in vehicle seats, biopolyols and the like are used for seat pads and the like based on the concept of carbon neutrality. Biopolyols are prepared by modifying vegetable oils, and biopolyols are said to be able to reduce greenhouse gas emissions compared to polyols derived from petroleum resources.

However, seat pads made of biopolyol or the like have low impact resilience, and the seat pad deforms greatly and tends to give a feeling of bottoming out, making it uncomfortable to sit on. In addition, in vehicle seats, biopolyols are used in seat pads, etc., making it difficult to suppress the shaking of the occupant's body as the vehicle travels. There is a desire to improve seating comfort, etc. caused by

The present invention has been made in view of the above facts, and provides a seat cushion for a vehicle that can prevent the body of the occupant from wobbling and ensure good sitting comfort even if the cushion pad is made of biopolyurethane or the like. and to provide vehicle seats.

A vehicle seat cushion according to claim 1 for achieving the above object includes a cushion pad for supporting the buttocks and thighs of an occupant, and a peripheral edge of the cushion pad on both sides in the front-rear direction of the seat or on both sides in the left-right direction of the seat. Locked to the lower surface and disposed in close contact with the lower surface of the cushion pad, having a higher rebound elasticity than the cushion pad, and suppressing deformation of the cushion pad when the cushion pad is deformed downward. a spring body;

In the vehicle seat cushion according to the first aspect, a spring body for suppressing deformation of the cushion pad is disposed on the lower surface of the cushion pad for supporting the buttocks and thighs of an occupant. The spring body is fixed to the lower peripheral edge of the cushion pad on both sides in the front and back direction of the seat or both sides in the left and right direction of the seat, and is brought into close contact with the lower surface of the cushion pad. It is elastically stretched by being deformed.

Here, the impact resilience modulus is the impact resilience modulus in the direction of applied load, and the impact resilience modulus is an index indicating impact resilience, rigidity, or strength, and indicates the degree of elasticity and restorability. Cushion pads have low rebound resilience, which causes them to sink a lot, resulting in poor recovery when the load is lightened. The spring body has a rebound resilience higher than that of the cushion pad.

As a result, when the occupant sits on the cushion pad, the occupant can feel the rebound elasticity according to the rebound elasticity of the spring body, and the spring body suppresses the elastic deformation of the cushion pad and prevents the occupant's body from wobbling. This ensures good seating comfort.

A second aspect of the present invention provides a vehicle seat cushion according to the first aspect, wherein the cushion pad is protruded downward from the peripheral edge of the lower surface toward the center of the lower surface.

In the vehicle seat cushion according to the second aspect of the present invention, the lower surface of the cushion pad covered by the spring body projects downward from the peripheral edge of the lower surface toward the center of the lower surface. For this reason, the spring body has a concave shape that corresponds to the bottom surface of the cushion pad, and provides elastic support so that it accurately covers the bottom surface of the cushion pad (without shifting) and effectively generates rebound resilience in the cushion pad. can.

According to a third aspect of the present invention, there is provided a vehicle seat cushion according to the first or second aspect, wherein both ends of the spring body in the front-rear direction of the seat are locked to the cushion pad.

In the vehicle seat cushion according to the third aspect of the present invention, the seat cushion is secured to the cushion pad at the front side in the longitudinal direction of the seat and at the rear side in the longitudinal direction of the seat. Thereby, when the occupant is seated on the cushion pad, it is possible to effectively suppress the shaking of the occupant's body in the front-rear direction. To lock the spring body in this manner, a rigid member such as an insert wire may be provided at the front and rear portions of the cushion pad, and the spring body may be locked to the rigid member.

In the vehicle seat cushion according to claim 4, in any one of claims 1 to 3, the spring body is arranged at each of the front end of the seat and the rear end of the seat, and both sides of the seat in the left-right direction are inclined. a connecting member provided with a wing portion directed upward, the spring body being connected to a central portion between the wing portions, and each of the connecting members being locked to the cushion pad; A locking means for locking the spring body to the cushion pad together with the connecting member is included.

In the vehicle seat cushion according to the fourth aspect of the present invention, a connecting member is connected to each of the front side end of the seat and the rear side end of the seat of the spring body. The connecting member is provided with wing portions in which both sides in the left-right direction of the seat are directed diagonally upward, and the spring body is connected to the center portion between the wing portions. Further, the connecting member is provided with a connecting means on the side opposite to the spring body, and when the connecting member is locked to the cushion pad by the locking means, the spring body is locked to the cushion pad.

As a result, the spring body can elastically support the cushion pad in the left-right direction of the seat, thereby suppressing vibrations of the occupant's body in the left-right direction of the seat.

A vehicle seat according to claim 5 includes the seat cushion according to any one of claims 1 to 4, a backrest for supporting the back of an occupant, and the spring body disposed in the seat cushion. The vehicle includes a seat frame for supporting the cushion pad, and an elastic member provided on the seat frame and capable of elastically supporting the cushion pad.

In the vehicle seat according to the fifth aspect, an elastic member is provided on the seat frame to which the cushion pad is attached, and the elastic member elastically supports the cushion pad provided with the spring body. As a result, the cushion pad can be effectively elastically supported by the spring body and the elastic member, making it possible for the occupant to feel comfortable sitting.

As explained above, in the vehicle seat cushion and vehicle seat of the present invention, it is possible to increase the rebound elasticity of the cushion pad that is felt by the seated occupant, thereby preventing the occupant's body from shaking and allowing the occupant to sit comfortably. This has the effect of ensuring comfort.

FIG. 1 is a perspective view showing a schematic configuration of a vehicle seat according to the present embodiment. FIG. 3 is a schematic cross-sectional view of the main parts of the seat cushion when viewed in the vehicle width direction. FIG. 2 is a schematic cross-sectional view of the main parts of the seat cushion as viewed from the front and back of the vehicle. It is a perspective view showing an example of a spring unit arranged in a seat cushion.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a schematic configuration of a vehicle seat 10 according to the present embodiment in a perspective view. The vehicle seat 10 according to the present embodiment is used for seating occupants in various vehicles such as vehicles. In each figure, the front, left, and upper portions of the vehicle seat 10 are indicated by arrows FR, LH, and UP, respectively. In the following description, front and rear, top and bottom, and left and right mean front and rear, top and bottom, and left and right sides of the vehicle seat 10, unless otherwise specified. Further, in the following description, in order to make the drawings easier to read, some symbols are omitted and their explanations are omitted.

As shown in FIG. 1, the vehicle seat 10 includes a seat cushion 12 for supporting the buttocks, thighs, etc. of a seated occupant (not shown), a seat back 14 for supporting the back of the occupant, A headrest 16 is also provided.

The seat back 14 includes a back frame 18 that is a skeletal member of the seat back 14, a back pad 20 supported by the back frame 18, and a back skin 22 that covers the back pad 20. The back pad 20 is disposed on the front side of the back frame 18 and attached to the back frame 18. The back skin 22 is formed into a bag shape by sewing a plurality of cloth pieces made of, for example, cloth, leather, synthetic leather, PVC, etc., and the back pad 20 is housed inside the bag shape. ing.

Further, a headrest 16 is attached to the upper end of the seatback 14, and the headrest 16 supports the head of an occupant seated on the seat cushion 12.

The seat cushion 12 includes a seat frame 24, which is a skeletal member of the seat cushion 12, and a cushion unit (cushion assembly) 26. The seat cushion 12 has a cushion unit 26 attached to the upper side of the seat frame 24. FIG. 2 shows a schematic cross-sectional view of the main parts of the cushion unit 26 as viewed from the left (side view), and FIG. 3 shows a schematic cross-sectional view of the main parts of the cushion unit 26 as seen from the front. has been done.

The seat frame 24 is made of a material with excellent rigidity, such as metal or hard resin. The seat frame 24 includes a front frame 24F on the front side, a rear frame 24R on the rear side, and side frames 24S provided in pairs on the left and right sides. Further, the front frame 24F and the side frame 24S are made of plate-like members and have a substantially L-shaped cross section (they may have other shapes such as a substantially C-shaped cross section), and the rear frame 24R has a pipe shape. has been done. The seat frame 24 is formed into a substantially rectangular frame shape when viewed from above, with each end of a side frame 24S connected to each end of a front frame 24F and a rear frame 24R.

Furthermore, an S spring 28 is arranged on the seat frame 24 as a shock absorbing member and an elastic member. The S springs 28 are made of metal, for example, and a plurality of S springs 28 are arranged in the left-right direction between the pair of side frames 24S. Each of the S springs 28 is attached to the seat frame 24 by having a front end connected to the front frame 24F, a rear end connected to the rear frame 24R, and being hung between the front frame 24F and the rear frame 24R. ing. In the seat cushion 12, the S spring 28 elastically supports the cushion unit 26 attached to the seat frame 24 from below, so that the seat cushion 12 can have the required cushioning properties.

The seat frame 24 is attached to the floor surface of the vehicle interior via guide rails 24G arranged in pairs on the left and right, and the seat frame 24 is attached to the vehicle body so as to be slidable in the front and rear direction along the guide rails 24G. There is. Further, a lower end portion of the back frame 18 is tiltably connected to the rear portion of the seat frame 24 via a reclining mechanism (not shown). Thereby, the vehicle seat 10 is provided with a sliding function in the front-rear direction and a reclining function of the seat back 14. Note that a known configuration can be applied to the basic configuration of such a vehicle seat 10.

As shown in FIGS. 2 and 3, the cushion unit 26 includes a cushion pad 30, a seat skin 32 that covers the cushion pad 30, and a spring unit (spring assembly) 34 that covers the lower side of the cushion pad 30. It is configured. The seat skin 32 is formed into a bag shape by sewing a plurality of cloth pieces made of, for example, cloth, leather, synthetic leather, PVC, etc. The seat skin 32 has a cushion pad 30 housed inside the bag shape. ing.

In the cushion unit 26, the front and rear parts of the cushion pad 30 are supported by the front frame 24F and the rear frame 24R, respectively, and the left and right sides of the cushion pad 30 are supported by the side frames 24S (see FIG. 1), respectively, so that the cushion pad 30 is connected to the seat frame 24. is attached to.

The cushion pad 30 is formed with a pad main body part 36 and left and right side parts (side support parts) 38 of the pad main body part 36. The left and right side portions 38 are bulged out above the pad body 36 on both the left and right sides of the pad body 36, and the side portions 38 are designed to be bulged upward relative to the buttocks and thighs of an occupant seated on the pad body 36. The shape ensures side support.

The cushion pad 30 can be made of a foam such as polyurethane foam (flexible polyurethane foam), and the cushion pad 30 can be made of a material known for use in vehicle seats.

In recent years, there has been a desire to achieve carbon neutrality, and in order to achieve carbon neutrality, flexible polyurethane foam (biopolyurethane) using polyol (biopolyol) modified from (inedible) vegetable oil has been developed. The cushion pad 30 can be made of bioplastic such as biopolyurethane.

In the vehicle seat 10 according to the present embodiment, biopolyurethane is applied to the cushion pad 30, and the cushion pad 30 is a biomass pad molded (resin molded) from biopolyurethane. The cushion pad 30 is surface-reinforced by covering substantially the entire surface (substantially the entire pad surface) with a thin (thin) protective member (not shown) such as felt.

As shown in FIGS. 2 and 3, the cushion pad 30 has a protrusion 40 formed at the lower part (lower surface) of the pad body 36. It protrudes downward in a predetermined range including the position of the center of gravity of the seated occupant.

As shown in FIG. 2, the protrusion 40 protrudes downward from the front and rear parts of the pad body 36, and the protrusion 40 is approximately triangular when viewed in the left-right direction. It is said to be the shape. Further, as shown in FIG. 3, the protruding portion 40 has side walls that are inclined downward from both ends in the left-right direction (each on the side portion 38 side of the pad main body portion 36) toward the center portion in the left-right direction. 42 is formed, and the protruding portion 40 has a substantially trapezoidal shape when viewed in the front-rear direction.

A pair of insert wires 44 serving as a rigid member and a locking means are arranged in the cushion pad 30, and the insert wires 44 are embedded in the pad body 36. The insert wire 44 is made of, for example, a metal material, a resin material, etc., and is formed into a linear shape, and the insert wire 44 is made into a linear shape so that it can be elastically deformed (bending), and the insert wire 44 can be elastically deformed (bending) to fit the cushion pad 30 as required. It is said that rigidity can be imparted.

The insert wire 44 is arranged such that an insert wire 44F is arranged at a position on the front side of the pad main body 36 on the rear side of the front frame 24F, and an insert wire 44R is arranged on the rear side of the pad main body 36 on the front side of the rear frame 24R. It is located. As a result, the insert wires 44F and 44R are arranged to straddle the center of gravity of the cushion pad 30 when the occupant is seated (so that the center of gravity is approximately in the middle). The insert wires 44 (44F, 44R) are inserted during molding of the cushion pad 30 and are integrated with the cushion pad 30 (pad body portion 36). The cushion pad 30 has insert wires 44F and 44R embedded therein, thereby increasing the rigidity of the front and rear sides.

The cushion pad 30 is provided with bottomed locking holes (recesses) 46 on the front side of the insert wire 44F and on the rear side of the insert wire 44R. A plurality of them are formed in the left and right direction. Inside the locking hole 46, a portion of the insert wire 44F or the insert wire 44R is exposed so that a hook 54 described below can be locked.

A spring unit 34 is arranged in the cushion unit 26 so as to cover the surface (lower surface) of the protrusion 40 of the cushion pad 30 (pad main body 36). FIG. 4 shows an example of the spring unit 34 in a schematic perspective view as viewed diagonally upward in the front-rear direction.

As shown in FIGS. 2 and 3, the spring unit 34 includes a spring body 50, a connecting member 52 to which the spring body 50 is connected, and a connecting member 52 for locking the connecting member 52 to the insert wires 44 (44F, 44R). A hook 54 is provided as a locking means.

The spring body 50 is made of an elastic body having a higher rebound modulus (rigidity) than the cushion pad 30 (biopolyurethane used in the cushion pad 30). In this embodiment, the rebound modulus is an index indicating rebound resilience, rigidity, or strength, and indicates the relative degree of elasticity and restorability. Due to the low rebound elasticity (repulsion resilience), the cushion pad sinks a lot, and its resilience when the load is lightened becomes low.

In this embodiment, a cloth spring is used as the elastic body used for the spring body 50, and the spring body 50 has a repulsion elasticity in the direction of the load that the cloth spring receives from the cushion pad 30, based on the rebound elasticity in the direction of the load applied to the cushion pad 30 by a seated occupant. The rebound modulus is high. The spring body 50 is formed into a substantially rectangular shape with a size (area) that covers the surface of the protrusion 40 (the lower surface of the pad main body 36) under tension between the insert wires 44F and 44R. Note that the repulsion elasticity modulus of the spring body 50 is set so that the occupant seated on the cushion pad 30 can feel comfortable sitting (repulsion feeling).

The connecting member 52 is provided as a pair of a front side (insert wire 44F side) connecting member 52F and a rear side (insert wire 44R side) connecting member 52R. The connecting member 52 (52F, 52R) is made of resin and has a band shape, and the connecting member 52 has wing portions 56 formed at both ends in the longitudinal direction. The wing portion 56 corresponds to the side wall 42 of the pad main body portion 36, and the wing portion 56 has a shape in which the longitudinal end portion of the connecting member 52 is bent upward and the tip is directed diagonally upward. has been done.

As a result, the connecting member 52F is disposed on the insert wire 44F side of the cushion pad 30, so that the wing portions 56 are in close contact with the side walls 42 of the pad main body portion 36 (protruding portion 40), and the space between the wing portions 56 is It is brought into close contact with the surface of the protrusion 40. Furthermore, by disposing the connecting member 52R on the insert wire 44R side of the cushion pad 30, the wing parts 56 are brought into close contact with the side walls 42 of the pad main body part 36 (protruding part 40), and the space between the wing parts 56 is It is brought into close contact with the surface (lower surface) of the portion 40.

The front side of the spring body 50 is connected to one side along the width direction of the connecting member 52F, and the rear side of the spring body 50 is connected to one side along the width direction of the connecting member 52R. The spring body 50 is connected to each of the connecting members 52F and 52R from a wing portion 56 on one side along the longitudinal direction to a wing portion 56 on the other side. , 52R over substantially the entire lengthwise direction.

Further, a plurality of hooks 54 are attached to each of the connecting members 52F and 52R on the other side along the width direction (the side opposite to the spring body 50). The hook 54 is attached to a position corresponding to the locking hole 46 when the connecting members 52F and 52R are arranged at a predetermined position on the lower surface of the cushion pad 30 (pad body portion 36).

As a result, in the spring unit 34, each of the hooks 54 is locked to each of the insert wires 44F and 44R in the locking hole 46, so that the connecting members 52F and 52R are connected to the cushion pad 30 (pad body portion 36). The spring body 50 that is locked and tensioned between the connecting members 52F and 52R is in close contact with the lower surface of the pad body 36 (the surface of the protrusion 40) and covers the surface of the protrusion 40.

Next, the operation of this embodiment will be explained.
In the vehicle seat 10 , the thighs and buttocks of a seated occupant are supported by a seat cushion 12 , the back of the occupant is supported by a seat back 14 , and the occupant's head is supported by a headrest 16 .

In the seat cushion 12, when the occupant is seated, the cushion pad 30 is elastically deformed and bent downward, and the bent cushion pad 30 presses the S spring 28 of the seat frame 24, causing the S spring 28 to absorb the load of the occupant. receive. In addition, in the seat cushion 12, when the load applied to the upper surface of the cushion pad 30 changes (reduces) when the occupant stands up or shakes his or her upper body, the surface of the cushion pad 30 elastically restores itself according to the rebound modulus. .

By the way, bio-polyurethanes using bio-polyols (polyols modified with vegetable oils) have weaker impact resilience (lower impact resilience) than polyurethanes, etc. using polyols derived from petroleum resources (hereinafter referred to as soft polyurethanes). ). For this reason, a seat cushion whose cushion pad is made of biopolyurethane causes a seated occupant to feel unsteady, compared to a seat cushion whose cushion pad is made of soft polyurethane.

Here, in the cushion unit 26 of the vehicle seat 10, a spring unit 34 is integrally arranged on a cushion pad (biomass pad) 30 using biopolyurethane. In the spring unit 34 , a spring body 50 having a higher resilience modulus than the cushion pad 30 closely contacts (closely adheres to) the lower surface of the cushion pad 30 (pad body portion 36 ) and covers the lower surface of the cushion pad 30 .

Therefore, in the seat cushion 12, when the cushion pad 30 receives a load and elastically deforms downward when the occupant sits on the seat cushion 12, the cushion pad 30 elastically stretches the spring body 50 that is in close contact with the lower surface of the cushion pad 30. As a result, in the cushion unit 26, the cushion pad 30 receives the rebound resilience of the spring body 50, increasing its apparent (sensible) rigidity, and the occupant does not feel that the cushion pad 30 has low resilience.

Furthermore, if the spring body 50 is not in contact with the lower surface of the cushion pad 30, when the spring body 50 comes into contact with the lower surface of the cushion pad 30, the occupant will feel a change in repulsion elasticity, such as a feeling of bottoming out. . However, in the cushion unit 26, since the spring body 50 is in close contact with the lower surface of the cushion pad 30, the occupant does not feel a change in the rebound resilience.

Therefore, in the seat cushion 12, by bringing the spring body 50, which has a higher impact resilience than the cushion pad 30, into close contact with the lower surface of the cushion pad 30, the rigidity (resilience) of the cushion pad 30 can be improved, and the A comfortable sitting feeling (seating feeling) can be generated.

Further, the cushion pad 30 is provided with a protrusion 40 on the lower surface of the pad body 36, and the protrusion 40 protrudes downward from the periphery of the pad body 36 toward the center. Further, in the cushion pad 30, an insert wire 44F is buried in the front part of the pad body part 36, and an insert wire 44R is buried in the rear part of the pad body part 36.

In the spring unit 34, the connecting members 52F, 52R are locked to the insert wires 44F, 44R, and the spring body 50 tightly covers the surface of the protrusion 40 of the cushion pad 30 between the connecting members 52F, 52R. Therefore, the spring body 50 can prevent displacement when covering the protrusion 40 of the cushion pad 30, and can reliably receive the load of the occupant from the cushion pad 30 and elastically support the seated occupant.

Thereby, in the seat cushion 12, the spring body 50 can prevent the occupant's body from wobbling not only in the front-rear direction of the seat but also in the left-right direction of the seat. Moreover, since the insert wires 44R and 44F buried in the front and rear parts of the cushion pad 30 (pad main body part 36) are used to lock the spring body 50 to the cushion pad 30, the insert wires 44F and 44R allow the front part of the cushion pad 30 to be The rigidity of the front and rear portions can be increased, and it is possible to effectively suppress the occupant's body from swaying in the front-rear direction of the seat.

Further, the spring body 50 is attached to each of the insert wires 44F, 44R via connecting members 52F, 52R, and the connecting members 52F, 52R have wing portions 56 at both ends in the left-right direction of the seat attached to the protruding portion 40. It is bent along the side wall 42. Therefore, since the spring body 50 can be in close contact with the side walls 42 on both sides of the seat in the left-right direction, it can generate high rebound resilience against changes in load in the left-right direction, and prevent the occupant's body from wobbling in the left-right direction of the seat. can be effectively suppressed.

Further, in the vehicle seat 10, a spring body 50 is provided on the cushion pad 30 separately from the S spring 28 of the seat frame 24. Thereby, in the vehicle seat 10, the rigidity (repulsion resilience) can be adjusted for each cushion pad 30, and in the vehicle seat 10, the rigidity can be adjusted to the preference of the occupant using (seating).

Therefore, in the seat cushion 12 and the vehicle seat 10 provided with the seat cushion 12, it is possible to increase the repulsion elasticity of the cushion pad felt by the seated occupant, prevent the occupant's body from wobbling, and ensure good sitting comfort. .

In addition, in this embodiment described above, biopolyurethane was used for the cushion pad 30. However, the material of the cushion pad may be other resin materials derived from plants (biomass plastics), or various known resin materials derived from petroleum resources such as soft polyurethane may be used. Thereby, the rigidity of the cushion pad can be made higher than the rigidity of the material. Further, by providing a spring body separately from the elastic member such as the S spring provided on the seat frame, the rigidity can be adjusted for each seat cushion, and the rigidity can be adjusted to the preference of the occupant who uses the seat cushion.

Further, in this embodiment, a cloth spring is used for the spring body 50. However, the spring body may be made of a rubber material such as synthetic rubber or natural rubber, or may be an S spring.

Further, in this embodiment, insert wires 44 (44F, 44R) are embedded (inserted) in the front and rear parts of the cushion pad 30, and the spring body 50 is stretched so as to be expandable and contractible (in a tensioned state) in the front-rear direction. However, the spring body may be tensioned so as to be expandable and contractible in the left-right direction.

Furthermore, in this embodiment, the spring body 50 is locked to the insert wire 44 embedded in the cushion pad 30. However, the structure of the locking means for locking the spring body to the cushion pad is not limited to this. Any configuration can be applied as long as it can be elastically expanded and contracted according to the deformation of the pad.

For example, a hook is connected as a locking means to both sides of the spring body in the front and back direction of the seat (or both sides in the left and right direction of the seat) as a locking means. It may be hooked onto a bottomed locking hole drilled in a cushion pad that does not have a cushion pad. At this time, since the surface of the cushion pad is covered with a protective member such as felt, the cushion pad will not be chipped. Furthermore, the protective member may be made of a nonwoven fabric or the like, and the nonwoven fabric may be impregnated with a cushion pad material (such as biopolyurethane) during molding of the cushion pad.

10 Vehicle seat 12 Seat cushion 24 Seat frame 26 Cushion unit 28 S spring 30 Cushion pad 34 Spring unit 36 Pad main body 40 Projection 44 (44F, 44R) Insert wire (locking means)
50 Spring body 52 (52F, 52R) Connecting member 54 Hook (locking means)

Claims (5)

a cushion pad for supporting the buttocks and thighs of the occupant;
Both sides of the seat in the front-rear direction or both sides of the seat in the left-right direction are locked to the lower surface of the peripheral edge of the cushion pad and are arranged in close contact with the lower surface of the cushion pad, and the rebound elasticity is made higher than that of the cushion pad, and the cushion pad is a spring body for suppressing deformation of the cushion pad when it is deformed downward;
seat cushions for vehicles including; 2. The vehicle seat cushion according to claim 1, wherein the cushion pad projects downward from the peripheral edge of the lower surface toward the center of the lower surface. 3. The vehicle seat cushion according to claim 1, wherein both ends of the spring body in the front-rear direction of the seat are engaged with the cushion pad. A wing section is provided at each of the front end of the seat and the rear end of the seat of the spring body, and both sides of the seat in the left-right direction are directed diagonally upward, and the wing section is provided in the center between the wing sections. a connecting member to which a spring body is connected;
a locking means for locking each of the connecting members to the cushion pad, and locking the spring body together with the connecting member to the cushion pad;
The vehicle seat cushion according to any one of claims 1 to 3, comprising: The seat cushion according to any one of claims 1 to 4,
a backrest for supporting the passenger's back;
a seat frame for supporting the cushion pad on which the spring body is arranged in the seat cushion;
an elastic member provided on the seat frame and capable of elastically supporting the cushion pad;
A vehicle seat equipped with.