JP2002211298A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat forcibly ventilating the periphery of a occupant body (especially, a contacting part of the body with a seat), and capable of simplifying and lightening the structure thereof. SOLUTION: A receiving seat portion 9 receiving the body of an occupant is provided on a seat frame forming element 2, and the receiving seat portion 9 is formed by a net material 10. The back surface side of the receiving seat portion 9 is structured to open to the outside, and an active ventilating mechanism 6 capable of ventilating the periphery of the occupant body through the net material 10 is provided. Therefore, the periphery of the occupant body is forcibly ventilated by the ventilating mechanism 6 through the net material 10, thereby preventing heat stuffing and suppressing getting stuffy or sweating of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly, to a portion (back,
The present invention relates to a vehicle seat that can forcibly ventilate its waist, hips, etc., thereby simplifying its structure and reducing its weight.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat has a seat cushion and a seat back, each of which is provided with a sponge layer on the surface of urethane foam, and the surface of each sponge layer is covered with a cloth material, leather, or a synthetic leather. Are in practical use.
Child seats for securing safety by restraining a seated infant among vehicle seats are widely used in practice. The child seat includes, for example, a base member for fixing the child seat to a vehicle seat via a seat belt provided in advance in the vehicle, and a seat body mounted on the base member.

The seat body is composed of a shell made of a hard synthetic resin, a shock absorbing material attached to the surface of the shell to form a receiving seat for receiving a baby, a seat cover for covering the surface and adjusting the appearance, and the like. I have. For example, urethane foam or polystyrene is generally used as the shock absorbing material, and a synthetic fiber cloth material is generally used for the seat cover.

[0004]

The vehicle seat is excellent in cushioning property but insufficient in air permeability, and particularly in a season where the outside temperature is high, the occupant closely adheres to the seat (back, waist, shoulder). Since there is no air flow around the back, the back, waist, and buttocks are covered with heat and sweaty or sweaty, causing discomfort. Even in conventional child seats, air permeability is insufficient, and there is no air flow around the infant's close contact with the seat,
The baby's back, waist, and buttocks are stuffy and sweaty and sweaty, causing discomfort.

[0005] Japanese Unexamined Patent Publication No. 10-100762 discloses a child seat in which the seat body is made of a material having good air permeability. In the seat body of this chaid sheet, a three-dimensional mesh is applied as a skin material to be contacted by an infant, a plate member made of highly ventilated urethane is applied as a shock absorbing material between the shell and the skin material, and a shell is used for ventilation. A plurality of concave grooves and a plurality of through holes.

[0006] In the publication described in this publication, although the air permeability is somewhat improved as compared with the conventional chid sheet, since the air hardly flows in the portion where the back, waist and buttocks of the sheet come into contact, there is no air flow. Similarly, the back, waist, and buttocks of the infant may feel uncomfortable due to the heat stuffing and sweating. In addition, since the seat body is composed of the shell, the plate-like body, and the three-dimensional mesh, the structure becomes complicated, the number of parts increases, and the production cost increases. An object of the present invention is to forcibly ventilate around the body of an occupant (particularly, a portion where the body is in close contact with a seat), simplify the structure and reduce the weight, reduce manufacturing costs, and the like. .

[0007]

According to a first aspect of the present invention, there is provided a vehicle seat including a seat frame forming body, wherein the seat frame forming body is provided with a receiving seat for receiving an occupant's body. The seat is formed of a net material, the back side of the receiving seat portion is configured to be open to the outside, and active ventilation means capable of ventilating around the occupant's body through the net material is provided. . After the occupant is seated on the vehicle seat, the surroundings of the occupant are ventilated through the net material by the ventilation means. In other words, air flows from the back side of the seat to the back, waist, and thighs of the occupant, or flows from the back, hips, and thighs to the back side of the seat, and the air around the occupant's body In particular, it is possible to forcibly ventilate the close contact portion of the body with the sheet, to prevent heat from collecting on the back, waist, buttocks, etc., and to suppress stuffiness and sweating of the body.

According to a second aspect of the present invention, in the vehicle seat according to the first aspect, the seat frame forming body has a seat frame member made of a hollow tubular member, and the ventilation means is provided inside the seat frame member. And an air blowing hole formed in the seat frame member and capable of blowing air from the blowing means to the outside of the seat frame member. . When ventilating around the occupant's body by the ventilation means, air is sent to the air passage of the seat frame member by the air blowing means, and air is blown out from around the air blowing hole to around the occupant's body for ventilation.

According to a third aspect of the present invention, in the vehicle seat according to the first aspect, the seat frame forming body has a seat frame member made of a hollow tubular member, and the ventilation means is provided inside the seat frame member. And an air suction hole formed in the seat frame member and capable of sucking air around the net material by the suction means. When ventilating around the occupant's body by this ventilation means, the air around the net material receiving the occupant's body is sucked into the inside of the seat frame member from the air suction hole and ventilated by the suction means.

According to a fourth aspect of the present invention, in the vehicle seat according to the first aspect of the invention, the ventilation means includes a ventilation fan supported by a seat frame forming body and disposed on a back side of the receiving seat portion. It is a feature. Therefore, this ventilation fan can be arranged in the dead space inside the vehicle seat.

The vehicle seat according to claim 5 is a vehicle seat according to claims 2-4.
In any one of the inventions, the seat frame forming body has the seat frame member and a cushion member that covers at least an outer peripheral side of the seat frame member,
The receiving seat is attached to the seat frame member. Since the receiving seat is attached to the seat frame member having high rigidity, the shape of the receiving seat can be maintained in a desired curved shape and the occupant's body can be reliably received.

According to a sixth aspect of the present invention, in the vehicle seat according to the fifth aspect, the receiving seat portion is configured to be detachably attached to the seat frame member.
Therefore, cleaning, repair, and replacement of the receiving seat can be easily performed.

The vehicle seat according to claim 7 is a vehicle seat according to claims 2-5.
In any one of the above aspects, the cross-sectional shape of each portion of the seat frame member is formed in a shape corresponding to the shape of a receiving seat portion for receiving an occupant's body. Therefore, a comfortable sitting posture can be maintained by lowering the contact surface pressure of the occupant's body. In addition, attachment and detachment of the receiving seat to and from the seat frame member is simplified.

An eighth aspect of the present invention is the vehicle seat according to the seventh aspect, wherein the seat frame member is formed by a hydroform using a metal pipe material. Therefore, the cross-sectional shape of each part of the seat frame member can be freely and easily formed.

The vehicle seat according to the ninth aspect is the vehicle seat according to the first to eighth aspects.
In any one of the above inventions, the vehicle seat is a child seat that can be mounted in a vehicle interior. The ventilation means allows ventilation around the infant's body through the net material.

According to a tenth aspect of the present invention, there is provided the vehicle seat according to the ninth aspect, wherein a plurality of idler wheels are provided at the lower end of the vehicle seat. After removing the vehicle seat from the vehicle, the vehicle seat can be moved by the plurality of idler wheel members.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, the present invention is applied to a child seat for an infant. In addition, this chid seat is fixed to the rear seat of the automobile, and the front, rear, left and right as viewed from the infant when the infant is seated on the chid seat will be referred to as front, rear, left and right. As shown in FIGS. 1 to 4, the chair seat 1 includes a seat frame forming body 2, mounting brackets 4 and 5 for detachably attaching the seat frame forming body 2 to the rear seat 3, and a body of an infant as an occupant. And an active ventilation mechanism 6 capable of ventilating the periphery.

First, the seat frame forming body 2 will be described. As shown in FIGS. 2 to 4, the seat frame forming body 2 includes a sheet frame member 7 formed of a hollow tubular member and an outer periphery of the seat frame member 7. And a cushion member 8 that covers the side and forms a portion for receiving the infant's head, legs and waist. The seat frame member 7 is three-dimensionally and annularly formed along the shape of the seat, and the seat frame member 7 is detachably attached with a receiving seat 9 for receiving the back, waist and thigh of the infant's body. Have been.

As shown in FIG. 3, the receiving seat 9 is formed in a three-dimensional shape that is recessed rearward with a net material 10 formed of a synthetic resin material having air permeability and elasticity. The outer edge portion 10a of the net material 10 is formed integrally with the net portion in a relatively rigid shape-retaining frame shape, and is formed in an arc-shaped cross-section that matches the cross-sectional shape of each portion of the seat frame member 7. Thus, the net member 10 can be attached to and detached from the seat frame member 7. The net member 10 may be composed of a shape-retaining frame made of a synthetic resin having sufficient rigidity and a net made of a flexible fiber.

As shown in FIGS. 3 and 4, the cushion member 8 covers the shell 8a made of hard synthetic resin, the shock absorber 8b attached to the surface of the shell 8a, and covers the surface of the shell 8a to improve the appearance. It is composed of a seat cover 8c and the like. The cushion member 8 includes a seat frame member 7
An opening 8e having the same outer shape as that of the above is formed, and the back side of the receiving seat 9 is open to the outside through the opening 8e. For example, urethane foam or polystyrene is used as the shock absorbing material 8b, and a cloth material made of natural fiber or synthetic fiber is generally used for the seat cover 8c. In addition, as shown in FIG.
1, a buckle 12, a plurality of belt holes 13 and the like.

Next, the ventilation mechanism 6 will be described. As shown in FIGS. 3 and 4, the ventilation mechanism 6 is
And the seat frame member 7 and the plurality of air blowing holes 15
And so on. An air passage 7 a is formed inside the seat frame member 7, and a blowing mechanism 6 having an air outlet connected to the air passage 7 a of the seat frame member 7 is connected obliquely rearward at a front portion of the seat frame member 7. I have.

A plurality of air outlets 15 are formed at an appropriate interval on the inner peripheral side of the seat frame member 7 at appropriate intervals, and the air from the air blowing mechanism 14 is supplied to the air outlets 15.
From the outside of the seat frame member 7. As the blower mechanism 14, a small sirocco fan driven by an electric motor is applied. A control unit is connected to a battery mounted on the vehicle. The control unit includes a power switch and a switching unit for adjusting the number of rotations of the electric motor, that is, the air volume, for example, three stages (large, medium, and small). Switches and the like are connected.
These switches are mounted on the side surface of the cushion member 8, and the control unit is connected to the electric motor in the vicinity of the electric motor, and drives the blower mechanism 14 by operating a power switch and a changeover switch. ing.

Next, the operation of the above-described chid sheet 1 will be described. After the child seat 1 is attached to the rear seat 3 via the mounting brackets 4 and 5, the infant is seated on the child seat 1, the seat belt 11 is inserted into the buckle 12 to restrain the infant, and the control unit is provided with a dedicated accessory kit. After connecting to the battery via the switch, the switch is operated to operate the blower mechanism 14. The blowing from the blowing mechanism 14 blows out of the seat frame member 7 from the plurality of air blowing holes 15 to ventilate around the infant's body (back, waist, buttocks) through the opening 8e and the net member 10.

That is, the air flows from the back side of the receiving seat 9 so as to hit the back, waist, and thighs of the infant, and forcibly removes the area around the infant's body, particularly, the close contact parts (back, hips, buttocks) with the seat. It can ventilate, prevent heat from collecting on the back, waist, buttocks, etc., and can reduce stuffiness and sweating of the body. Such a comfortable sitting state can be maintained. It is to be noted that a changeover switch can be used to reduce the air volume or turn off the power switch as necessary so that the infant's body does not get too cold. Since the rear surface of the receiving seat 9 is open to the outside, the weight of the chid seat 1 can be reduced.

Since a small sirocco fan is used as the blower mechanism 14 and air can be ventilated simply by blowing air from the plurality of air outlets 15 formed in the seat frame member 7, the hollow interior of the seat frame member 7 can be ventilated. The structure of the ventilation mechanism 6 can be simplified by also using the air passage 7a, and the maintainability can be improved. Since the receiving seat 9 is configured to be detachable from the seat frame member 7, the receiving seat 9 can be easily cleaned, repaired, and replaced. In addition, since the outer peripheral portion of the receiving seat 9 is configured to be attached to the seat frame member 7 having high rigidity, the receiving seat 9 can maintain the desired shape and can reliably receive the body of the infant. The weight of the net material 10 can be reduced.

Next, a modified embodiment in which this embodiment is partially modified will be described. However, the same members as those in the above-described embodiment are denoted by the same reference numerals, and the description will be appropriately omitted. 1) Modification 1 (see FIGS. 5 and 6) The ventilation mechanism of the seat 1A has two ventilation fans 16 arranged on the back side of the receiving seat 9, and the ventilation fan on the upper side. Numeral 16 is disposed at a position corresponding to the vicinity of the back of the infant, and the lower ventilation fan 16 is disposed at a position corresponding to the vicinity of the thigh of the infant. The fan case 17 of each ventilation fan 16 is fixed to the seat frame member 7.

Each of the ventilation fans 16 has a thin structure with a fan motor. A control unit is connected to the battery of the vehicle. The control unit includes a power switch similar to that of the above-described embodiment and a switch for adjusting the air volume. Switches and the like are connected. The switches are mounted on the side surface of the cushion member 8, and the control unit is connected to two motors in the vicinity of the fan case of the lower ventilation fan, respectively. Is to be driven. Other configurations are substantially the same as those of the above-described embodiment, and by rotating the ventilation fan 16, around the infant's body (back, waist, hips)
Can be forcibly ventilated through the opening 8e and the net material 10.

2) Modification 2 (see FIGS. 7 to 9) At the four corners at the lower end of the chair sheet 1B, four
Each of the idler balls 18 as individual idler wheel members is provided. At the lower end of the seat frame member 7, a pair of left and right brackets 18 projecting slightly forward is provided at the front end thereof.
a, and a pair of left and right brackets 18b for supporting the mounting bracket 5 is joined to the rear end. Each idle ball 18 is supported vertically downward by a holding bracket 18c, and these four holding brackets 18c are paired with a pair of brackets 1c.
8a and a pair of brackets 18b can be connected to each other by bolts. After the chad sheet 1B is detached from the rear seat 3, it can be easily moved by these idle balls 18. It should be noted that a roller-shaped idle wheel member is also applicable.

3) Modification 3 (See FIGS. 10 and 11) The seat frame member 7 is set in a predetermined mold using a metal tube as a raw material, and the inside of the tube is filled with a high hydraulic pressure. It is formed by a hydroform that is plastically processed by doing
For example, a pair of divided bodies 7b, 7 divided into right and left or up and down
c may be joined. In this case, the production cost of the seat frame member 7 can be significantly reduced, particularly when the chad sheet is mass-produced under the same standard (dimension). Moreover, the cross-sectional shape of each part of the seat frame member 7 is formed into a shape corresponding to the shape of the receiving seat 9 for receiving the infant's body, thereby lowering the contact surface pressure of the infant's body and maintaining a comfortable sitting posture. Can be. Further, attachment / detachment of the receiving seat portion 9 to / from the seat frame member 7 is simplified.

4) Modification 4 The ventilation mechanism includes a suction mechanism 19 (see FIG. 3) connected to an air passage inside the seat frame member, the seat frame member 7, and the net material formed on the seat frame member. And a plurality of air suction holes 15 capable of sucking the air around by the suction means. As the suction mechanism 19, for example, the same small sirocco fan as in the above-described embodiment is applied, and the fan motor is rotated in the reverse rotation direction to the case of the above-described embodiment, so that the air around the net member 10 is sucked into a plurality of air. The air can be sucked into the interior of the seat frame member 7 from the hole 20 and ventilated. In addition, it is also possible to apply the same ventilation fan as that of the first modification as another suction mechanism, and to rotate the ventilation fan in a direction opposite to that of the first modification to perform ventilation.

As shown in FIG. 12, the receiving seat 9 and the ventilation mechanism formed of the net member 10 can be applied to the rear seat 3 or a front seat (not shown).
In addition, various modifications can be made to the above embodiment without departing from the spirit of the present invention.

[0032]

According to the first aspect of the present invention, the receiving seat portion is formed of a net material, the back side of the receiving seat portion is configured to be open to the outside, and the surroundings of the occupant's body are ventilated through the net material. By providing possible active ventilation means, after the occupant sits in the vehicle seat, the occupant's body surroundings, especially the back, hips and buttocks, are ventilated by the back opening of the receiving seat and the net material Can be forcibly ventilated through.

That is, air is applied to the occupant's back, waist and thigh from the back side of the receiving seat, or
Flow from the waist and thighs toward the back of the seat, forcibly ventilating the area around the occupant's body, especially the area where the body is in close contact with the seat, and preventing heat from collecting in the back, waist, buttocks, etc. It can prevent the body from stuffiness and sweating, and can maintain a comfortable sitting state. Since the rear side of the receiving seat is open to the outside, the weight of the vehicle seat can be reduced.

According to the second aspect of the present invention, the air can be sent to the air passage of the seat frame member by the air blowing means, and the air can be blown out of the seat frame member through the air outlet to ventilate the seat frame member. By using the hollow interior as an air passage, the structure of the ventilation means can be simplified, and the maintainability can be improved. The other effects are the same as those of the first aspect.

According to the third aspect of the present invention, air around the net material can be sucked into the interior of the seat frame member through the air suction hole and ventilated by the suction means, so that the same effect as in the second aspect can be obtained. . The other effects are the same as those of the first aspect. According to the invention of claim 4, the ventilation means includes:
Since the ventilation fan is supported by the seat frame forming body and disposed on the back side of the receiving seat portion, the ventilation fan can be arranged in a dead space inside the vehicle seat, and the vehicle seat is made compact. be able to.
The other effects are the same as those of the first aspect.

According to the fifth aspect of the present invention, since the receiving seat is attached to the rigid seat frame member, the shape of the receiving seat can be maintained in a desired curved shape to reliably receive the occupant's body. it can. In addition, the same effect as any one of the second to fourth aspects is obtained. According to the invention of claim 6, since the receiving seat portion is configured to be detachable from the seat frame member,
Cleaning, repair, and replacement of the receiving seat can be easily performed. The other effects are the same as those of the fifth aspect.

According to the seventh aspect of the present invention, since the cross-sectional shape of each part of the seat frame member is formed according to the shape of the receiving seat portion for receiving the occupant's body, the contact surface pressure of the occupant's body is reduced. And a comfortable sitting posture can be maintained. In addition, attachment and detachment of the receiving seat to and from the seat frame member is simplified. In addition, the same effect as any one of the second to fifth aspects is obtained.

According to the eighth aspect of the present invention, since the seat frame member is formed by hydroforming, the cross-sectional shape of each part of the seat frame member can be freely and easily formed. In addition, the manufacturing cost of the seat frame member can be significantly reduced.
The other effects are the same as those of the seventh aspect.

According to the ninth aspect of the present invention, since the vehicle seat is a child seat that can be mounted in the vehicle interior, the area around the infant's body can be forcibly ventilated through the net member by the ventilation means. In addition, the same effect as any one of the first to eighth aspects is obtained. According to the tenth aspect, after removing the vehicle seat from the vehicle, the vehicle seat can be easily moved by the plurality of idler wheel members. The other effects are the same as those of the ninth aspect.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a mounted state of a chid sheet according to an embodiment of the present invention.

FIG. 2 is a perspective view of a chid sheet.

FIG. 3 is an exploded perspective view of a seat frame forming body and a receiving seat portion.

FIG. 4 is a longitudinal sectional view of a chaid sheet.

FIG. 5 is a perspective view showing the internal structure of a modified seat sheet.

FIG. 6 is a longitudinal sectional view of a modified seat sheet.

FIG. 7 is a perspective view of a chad sheet with a freewheel member according to another modification.

FIG. 8 is an exploded perspective view of the seat frame member and the idler wheel member.

FIG. 9 is a vertical cross-sectional view of a chid sheet according to another modification.

FIG. 10 is a perspective view of a chid sheet having a seat frame member formed by hydroforming.

FIG. 11 is an exploded perspective view of a seat frame member.

FIG. 12 is a perspective view of a vehicle seat according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A, 1B Child seat 2 Seat frame forming body 6 Ventilation mechanism 7 Seat frame member 7a Air passage 8 Cushion member 9 Receiving seat part 10 Net material 14 Blowing mechanism 15 Air blowing hole 16 Ventilation fan 18 Idling wheel member 19 Suction mechanism 20 Air suction hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshinori Sakamoto 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture M-Suzuki Co., Ltd. F-term (reference) 3B084 JA03 JA06 JG02 JG06 3B087 CE06 DB04 DB10 DE01 DE02

Claims (10)

[Claims] 1. A vehicle seat having a seat frame forming body, wherein a receiving seat for receiving an occupant's body is provided on the seat frame forming body, and the receiving seat is formed of a net material. A vehicle seat having a rear side open to the outside and an active ventilation means capable of ventilating around an occupant's body through a net material. 2. The seat frame forming body has a seat frame member made of a hollow tubular member, wherein the ventilator is a blower connected to an air passage inside the seat frame member, and the seat frame thereof. The vehicle seat according to claim 1, further comprising an air blowing hole formed in the member and capable of blowing air from a blowing unit to the outside of the seat frame member. 3. The seat frame forming body has a seat frame member made of a hollow tubular member, wherein the ventilation means is a suction means connected to an air passage inside the seat frame member, and the seat frame is The vehicle seat according to claim 1, further comprising: an air suction hole formed in a member and capable of sucking air around the net material by a suction means. 4. The vehicle seat according to claim 1, wherein the ventilation means includes a ventilation fan supported by a seat frame forming body and disposed on a back side of the receiving seat. 5. The seat frame forming body includes the seat frame member and a cushion member that covers at least an outer peripheral side of the seat frame member, and the receiving seat is attached to the seat frame member. The vehicle seat according to any one of claims 2 to 4, wherein: 6. The vehicle seat according to claim 5, wherein the receiving seat portion is configured to be detachable from the seat frame member. 7. The vehicle according to claim 2, wherein a cross-sectional shape of each portion of the seat frame member is formed in a shape corresponding to a shape of a receiving seat portion for receiving an occupant's body. Sheet. 8. The vehicle seat according to claim 7, wherein the seat frame member is formed by a hydroform using a metal pipe material. 9. The vehicle seat according to claim 1, wherein the vehicle seat is a child seat mountable in a vehicle interior.
8. The vehicle seat according to any one of 8 above. 10. The vehicle seat according to claim 9, wherein a plurality of idler wheels are provided at a lower end of the vehicle seat.
A vehicle seat according to claim 1.