Vehicle seat

Abstract

To provide a vehicle seat which enables improvement of a hold on an upper half body of an occupant without causing the occupant to have a feeling of a foreign body.SOLUTION: A vehicle seat 10 includes: a seat back pad 22 supported by a seat back frame 16 forming a framework of a seat back 20, the seat back pad 22 including a main part 24 provided at the center in a seat width direction and supporting an upper half body of an occupant H from the rear, and side support parts 26 provided at both sides of the main part 24 in the seat width direction and supporting the upper half body of the occupant H from the side; and a skin 21 covering the seat back pad 22; and net-like bodies 30 each of which is provided in a position, corresponding to an area from a seventh thoracic vertebra to a ninth thoracic vertebra of the occupant H in a seat vertical direction and located between the side support part 26 and the skin 21, and is formed in a net-like form.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] Patent Document 1 discloses a seat cushion body in which a surface reinforcing layer is formed by embedding and integrating a net-like member made of stretched plastic filaments entirely into the surface layer of a main body made of polyurethane foam. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication No. 61-170360 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in a vehicle seat, it is preferable to improve the sense of support for the upper body of an occupant without giving the occupant a foreign body sensation.

[0005] An object of the present invention is to provide a vehicle seat which improves the sense of support for the upper body of an occupant without causing a foreign body sensation. [Means for solving the problem]

[0006] The vehicle seat of claim 1 comprises a seatback pad supported by a seatback frame that constitutes the skeleton of the seatback, the seatback pad comprising: a main portion that is provided in the center of the seat width direction and supports the upper body of an occupant from behind; and side support portions that are provided on both sides of the main portion in the seat width direction and support the upper body of the occupant from the sides; a skin that covers the seatback pad; and a mesh-like body that is provided in a position corresponding to the 7th to 9th thoracic vertebrae of the occupant in the vertical direction of the seat, between the side support portions and the skin, and formed in a mesh shape.

[0007] According to the vehicle seat of claim 1, a mesh-like body is provided between the side support portion and the skin at a position corresponding to the seventh to ninth thoracic vertebrae of the occupant in the vertical direction of the seat, so that the hardness of the side support portion at the position corresponding to the seventh to ninth thoracic vertebrae of the occupant is made higher than that of other portions. Therefore, in the side support portion, the center of gravity of the upper body of the occupant is supported by a portion having a higher hardness than that of other portions. On the other hand, in the side support portion, the portion other than the center of gravity of the upper body of the occupant is supported by a portion having a lower hardness than that of the center of gravity of the upper body of the occupant. As a result, the feeling of holding the upper body of the occupant can be improved without giving a foreign body sensation.

[0008] In the vehicle seat of claim 2, in the vehicle seat described in claim 1, a pad through hole penetrating the seatback pad is provided in a portion of the seatback pad where the mesh body is provided, and a skin through hole penetrating in the thickness direction of the skin is provided in a portion of the skin where the mesh body is provided.

[0009] According to the vehicle seat of claim 2, the portion where the mesh body is provided has a pad through-hole penetrating the seat back pad and a skin through-hole penetrating in the thickness direction of the skin, so that the pad through-hole and the skin through-hole communicate with each other via the mesh body. Therefore, the ventilation between the outside of the skin and the inside of the seat back pad is improved near the armpits of the occupant. As a result, the body temperature of the occupant can be efficiently adjusted.

[0010] In the vehicle seat according to a third aspect of the present invention, in the vehicle seat according to the second aspect, the pad through-hole and the skin through-hole are provided opposite each other with the mesh body interposed therebetween.

[0011] According to the vehicle seat of claim 3, the pad through-hole and the skin through-hole are provided opposite to each other through a mesh body, so that the pad through-hole and the skin through-hole are communicated through the mesh body. Therefore, the ventilation between the outside of the skin and the inside of the seat back pad is improved in the vicinity of the armpits of the occupant. As a result, the body temperature of the occupant can be adjusted more efficiently.

[0012] A vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to the second or third aspect, wherein the skin is formed to have a lower air permeability density than the mesh body.

[0013] According to the vehicle seat of claim 4, the skin is formed to have a lower air permeability density than the mesh body, so that air flows in and out through the skin through-holes, thereby improving the breathability around the armpits of the occupant.

[0014] A vehicle seat according to a fifth aspect of the present invention is the vehicle seat according to any one of the second to fourth aspects, wherein the pad through-hole is connected to an air conditioning device.

[0015] According to the vehicle seat of claim 5, the pad through-hole is connected to an air conditioner, so that wind from the air conditioner is sent to the pad through-hole. Therefore, the wind sent to the pad through-hole is exhausted from the skin through-hole via the mesh body. As a result, the wind from the air conditioner is sent to the vicinity of the armpits of the occupant, so that the body temperature of the occupant can be adjusted more efficiently.

[0016] In the vehicle seat according to a sixth aspect of the present invention, in the vehicle seat according to any one of the first to fifth aspects, the mesh body is joined to the cover and the seat back pad.

[0017] According to the vehicle seat of claim 6, the mesh body is joined to the upholstery and the seat back pad, so that the mesh body is in close contact with the upholstery and the seat back pad. Therefore, when an occupant sits down, the mesh body is prevented from shifting from the upholstery and the seat back cushion. As a result, the feeling of support for the upper body of the occupant can be improved. Effect of the Invention

[0018] According to the vehicle seat of the present invention, the sense of support for the upper body of the occupant can be improved without causing a foreign body sensation. [Brief description of the drawings]

[0019] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment; [Diagram 2] FIG. 2 is a front view showing a seat back according to the embodiment. [Diagram 3] 3 is a cross-sectional view showing the seat back according to the embodiment, taken along line AA in FIG. 2. [Figure 4] 3 is a cross-sectional view showing the seat back according to the embodiment, showing the cross section BB of FIG. 2. [Diagram 5] FIG. 11 is a cross-sectional view showing a seat back according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, a vehicle seat according to an embodiment will be described with reference to the drawings. In the embodiment, an example will be described in which the vehicle seat is a front seat. Note that an arrow FR shown as appropriate in each drawing indicates the front side of the seat in the seat front-rear direction, an arrow UP indicates the upper side of the seat in the seat up-down direction, an arrow LH indicates the left side of the seat in the seat width direction, and an arrow T indicates the thickness direction of the skin. In the embodiment, the front of the seat coincides with the front of the vehicle. In addition, the occupant will be described as a three-dimensional mannequin equivalent to the standard body type JM50 (JIS4607) of a Japanese adult male as a small person, and as a three-dimensional mannequin equivalent to the standard body type AM50 (SAE J826) of an American adult male as a large person.

[0021] [Configuration of vehicle seat 10] As shown in FIG. 1, a vehicle seat 10 includes a seat back 20 that supports the upper body of an occupant, a headrest 14 that is provided on the upper side of the seat back 20 and supports the head of the occupant, and a seat cushion 12 on which the occupant sits.

[0022] The seat back 20 is attached to the front and rear of the seat so as to be tiltable. As shown in FIG. 1 and FIG. 2, the seat back 20 includes a seat back frame 16, a seat back pad 22, a cover 21, and a mesh body 30.

[0023] (Seat back frame 16) 1, the seatback frame 16 constitutes the framework of the seatback 20. The seatback frame 16 includes a pair of left and right side frames 16A arranged at an interval in the seat width direction and extending in the seat up-down direction, a lower frame 16B connecting the lower ends of the pair of left and right side frames 16A in the seat width direction, and an upper frame 16C connecting the upper ends of the pair of left and right side frames 16A in the seat width direction.

[0024] (Seat back pad 22) The seatback pad 22 is attached to the seat front side of the seatback frame 16 and is supported by the seatback frame 16. The seatback pad 22 is formed, for example, by injecting a foaming resin material such as polyurethane resin into a predetermined mold and foaming it within the mold.

[0025] As shown in FIG. 2, the seat back pad 22 includes a pair of left and right side support portions 26 disposed at both ends in the seat width direction, and a main portion 24 disposed between the pair of left and right side support portions 26.

[0026] <Main Section 24> The main portion 24 is provided in the center in the seat width direction and supports the upper body of the occupant H from behind.

[0027] <Side support part 26> The side support portions 26 are formed to protrude toward the seat front side relative to the main portion 24. The side support portions 26 are disposed at positions that support at least the center of gravity of the upper body of the occupant H in the vertical direction of the seat.

[0028] The side support portions 26 are provided on both sides of the main portion 24 in the seat width direction and support the sides of the upper body of the occupant H. In other words, the side support portions 26 suppress the movement of the occupant H seated in the vehicle seat 10 in the seat width direction.

[0029] Here, the position of the center of gravity of the upper body of the occupant H is in the range from the seventh thoracic vertebra to the ninth thoracic vertebra. As shown in Fig. 2, the range from the seventh thoracic vertebra to the ninth thoracic vertebra in the vertical direction of the seat is defined as a center of gravity area S. Then, of the side support parts 26, the part of the center of gravity area S is defined as a first side support part 26A, and the other part of the side support parts 26 (parts other than the center of gravity area S) is defined as a second side support part 26B.

[0030] 4, the first side support portion 26A is provided with a plurality of pad through holes 26C penetrating the first side support portion 26A in the thickness direction T of the skin 21. The pad through holes 26C may be circular through holes or polygonal through holes. Moreover, the pad through holes 26C may be bent to penetrating the first side support portion 26A.

[0031] The pad through-hole 26C is connected to an air conditioner 40 via a duct 40A, and air from the air conditioner 40 is sent to the pad through-hole 26C. The air conditioner 40 is installed, for example, inside an instrument panel provided at the front side of the vehicle interior.

[0032] (epidermis 21) 1 and 2, the skin 21 is provided so as to cover the seat back pad 22 from the front side of the seat. The skin 21 may be made of, for example, nonwoven fabric, cloth material, leather, synthetic leather, or other materials. The skin 21 is formed to have a lower air permeability density than the mesh body 30 described later.

[0033] 4, the skin 21 is provided with a plurality of skin through holes 21A penetrating the skin 21 in the thickness direction T of the skin 21 in a portion facing the first side support portion 26A. The skin through holes 21A may be circular through holes or polygonal through holes.

[0034] The pad through hole 26C and the epidermis through hole 21A are provided opposite to each other via the mesh body 30. The pad through hole 26C and the epidermis through hole 21A can have the same shape and the same size. The pad through hole 26C and the epidermis through hole 21A can also have different shapes and sizes.

[0035] (Reticulated body 30) 2, the mesh body 30 is provided on the seat front side of the first side support portion 26A so as to cover the first side support portion 26A. When viewed from the front of the seat, the mesh body 30 is formed to have substantially the same size and shape as the first side support portion 26A.

[0036] The mesh body 30 is provided between the first side support portion 26A and the skin 21. The mesh body 30 is a three-dimensional fibrous elastic body formed in a net shape by intertwining fibrous members. The fibrous members may be, for example, polyethylene resin. The density and material of the mesh body 30 may be appropriately changed so that the seat back 20 has a desired hardness.

[0037] The mesh body 30 is joined to the first side support portion 26A and the skin 21 by, for example, an adhesive.

[0038] [Operation of the vehicle seat 10] 4, when an occupant H seated in the vehicle seat 10 turns on the air conditioner 40, for example, by operating a control panel attached to the instrument panel, cool air or hot air is sent from the air conditioner 40 to the pad through-hole 26C via the duct 40A. The cool air or hot air sent to the pad through-hole 26C is exhausted to the outside from the skin through-hole 21A via the mesh body 30. This allows the cool air or hot air to be exhausted near the armpits of the occupant H.

[0039] [Effect] Incidentally, by making the overall hardness of the side support parts 26 higher than that of the main part 24, it is possible to improve the sense of being held by the occupant H. On the other hand, if the hardness of the side support parts 26 is too high, there is a problem that this may lead to a foreign body sensation depending on the position of the side support parts 26.

[0040] The vehicle seat 10 of the embodiment is provided with a seatback pad 22 supported by a seatback frame 16 that constitutes the skeleton of a seatback 20, the seatback pad 22 including a main portion 24 that is provided in the center of the seat width direction and supports the upper body of an occupant H from behind, and side support portions 26 that are provided on both sides of the main portion 24 in the seat width direction and support the upper body of the occupant H from the sides, a skin 21 that covers the seatback pad 22, and a mesh body 30 that is provided in a mesh-like shape at a position corresponding to the seventh to ninth thoracic vertebrae of the occupant H in the vertical direction of the seat and between the side support portions 26 and the skin 21 (see FIG. 2).

[0041] By providing the mesh-like body 30 formed in a net shape at a position corresponding to the seventh to ninth thoracic vertebrae of the occupant H in the vertical direction of the seat and between the side support part 26 and the skin 21, the hardness of the position of the side support part 26 corresponding to the seventh to ninth thoracic vertebrae of the occupant H is made higher than that of other parts. Here, since the center of gravity of the upper body is located near the seventh to ninth thoracic vertebrae, in a vehicle seat, support near the seventh to ninth thoracic vertebrae is important, and in the side support part 26, the center of gravity of the upper body of the occupant H is supported by a part having a higher hardness than the other parts. On the other hand, in the side support part 26, the part other than the center of gravity of the upper body of the occupant H is supported by a part having a lower hardness than the center of gravity of the upper body of the occupant H. As a result, the feeling of holding the upper body of the occupant H can be improved without giving a foreign body sensation.

[0042] Furthermore, by attaching the mesh body 30 to the side support portion 26, it is possible to optimize the hardness of the side support portion 26 in the vertical direction of the seat at the position corresponding to the seventh to ninth thoracic vertebrae of the occupant H. Therefore, with a simple configuration, it is possible to improve the sense of support for the upper body of the occupant H without giving a foreign body sensation.

[0043] Incidentally, in the vertical direction of the seat, the position of the side support portion 26 corresponding to the seventh to ninth thoracic vertebrae of the occupant H is near the armpits of the occupant H. Large blood vessels pass through the armpits of the human body, and it is preferable to regulate body temperature in this vicinity.

[0044] In the vehicle seat 10 of the embodiment, a pad through-hole 26C penetrating the seatback pad 22 is provided in the portion of the seatback pad 22 where the mesh body 30 is provided, and a skin through-hole 21A penetrating the skin 21 in the thickness direction of the skin 21 is provided in the portion of the seatback pad 22 where the mesh body 30 is provided (see Figure 4).

[0045] By providing the pad through-hole 26C and the skin through-hole 21A, the pad through-hole 26C and the skin through-hole 21A communicate with each other via the mesh body 30. Therefore, the breathability between the outside of the skin 21 and the inside of the seat back pad 22 is improved in the vicinity of the armpits of the occupant H. As a result, the body temperature of the occupant H can be efficiently regulated.

[0046] In the vehicle seat 10 of the embodiment, the pad through-hole 26C and the skin through-hole 21A are provided opposite each other with the mesh body 30 interposed therebetween (see FIG. 4).

[0047] The pad through-hole 26C and the skin through-hole 21A are provided facing each other via the mesh body 30, so that the pad through-hole 26C and the skin through-hole 21A are connected to each other via the mesh body 30. This improves the breathability between the outside of the skin 21 and the inside of the seat back pad 22 in the vicinity of the armpits of the occupant H. As a result, the body temperature of the occupant H can be regulated more efficiently.

[0048] In the vehicle seat 10 of the embodiment, the cover 21 is formed to have a lower air permeability density than the mesh body 30 .

[0049] The skin 21 is formed to have a lower air permeability density than the mesh body 30, so that air flows in and out through the skin through-holes 21A. Therefore, the breathability can be improved around the armpits of the occupant H.

[0050] In the vehicle seat 10 of the embodiment, the pad through-hole 26C is connected to the air conditioning device 40 (see FIG. 4).

[0051] The pad through-hole 26C is connected to the air conditioner 40, so that wind from the air conditioner 40 is sent to the pad through-hole 26C. Therefore, the wind sent to the pad through-hole 26C is exhausted from the skin through-hole 21A via the mesh body 30. As a result, the wind from the air conditioner 40 is sent to the vicinity of the armpits of the occupant H, so that the body temperature of the occupant H can be more efficiently adjusted.

[0052] In the vehicle seat 10 of the embodiment, the mesh body 30 is joined to the cover 21 and the seat back pad 22 (see FIG. 4).

[0053] The mesh body 30 is joined to the surface skin 21 and the seat back pad 22, so that the mesh body 30 is in close contact with the surface skin 21 and the seat back pad 22. Therefore, when the occupant H sits down, the mesh body 30 is prevented from shifting from the surface skin 21 and the seat back cushion. As a result, the feeling of support for the upper body of the occupant H can be improved.

[0054] The vehicle seat of the present invention has been described above based on the above embodiment. However, the specific configuration is not limited to this embodiment, and design changes and the like are permitted as long as they do not deviate from the gist of the invention according to each claim in the scope of the claims.

[0055] In the above embodiment, the pad through hole 26C and the epidermis through hole 21A are provided facing each other via the mesh body 30. However, as shown in Fig. 5, the pad through hole 26C and the epidermis through hole 21A may be provided offset from each other without facing each other via the mesh body 30.

[0056] In the above embodiment, an example has been shown in which the mesh body 30 is provided so as to cover the first side support portion 26A. However, a plurality of mesh bodies with different hardness may be provided in the side support portion 26. For example, a mesh body softer than the mesh body of the first side support portion 26A may be further provided on the upper side of the sheet of the second side support portion 26B.

[0057] In the above embodiment, the mesh body 30 is formed to have substantially the same size and shape as the first side support part 26A so as to cover the first side support part 26A. However, it is sufficient that the mesh body covers at least the first side support part 26A.

[0058] In the above embodiment, the mesh body 30 is provided in the first side support portion A. However, the mesh body can also be provided in the center of gravity area S of the main portion .

[0059] In the above embodiment, an example has been shown in which the vehicle seat 10 is applied to a front seat of a vehicle. However, the vehicle seat can also be applied to a rear seat of a vehicle. [Explanation of symbols]

[0060] 10 Vehicle seats 16 Seat back frame 20 Seat back 21 Epidermis 21A Epidermal penetration hole 22 Seat back pad 24 Main Section 26 Side support part 26C Pad Through Hole 30 Reticulum 40 Air conditioner

Claims

1. A seat back pad supported by a seat back frame that constitutes a skeleton of a seat back, A main portion provided in the center of the seat width direction and supporting the upper body of the occupant from the rear; A seat back pad including side support portions provided on both sides of the main portion in the seat width direction and supporting an upper body of an occupant from the sides; A skin covering the seat back pad; A mesh-like body is provided at a position corresponding to the seventh to ninth thoracic vertebrae of the occupant in the vertical direction of the seat and between the side support portion and the skin, and is formed in a mesh shape; A vehicle seat comprising:

2. A pad through-hole penetrating the seat back pad is provided in a portion of the seat back pad where the mesh body is provided, The skin has through holes extending in the thickness direction of the skin at the portion where the mesh body is provided. The vehicle seat according to claim 1 .

3. The pad through hole and the skin through hole are provided opposite to each other via the mesh body. The vehicle seat according to claim 2.

4. The skin is formed to have a lower air permeability density than the mesh body. The vehicle seat according to claim 2 or 3.

5. The pad through hole is connected to an air conditioning device. The vehicle seat according to claim 2.

6. The mesh body is joined to the skin and the seat back pad. The vehicle seat according to claim 1 .

Images