JP2004008334A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle, facilitating the construction of an air blowing mechanism for blowing the air to a seat cushion or a seat back. <P>SOLUTION: A Pad material 20, 30 of a seat cushion 2 or a seat back 3 respectively includes a first pad member 4, 6 constituting the surface side, and a second pad member 5, 7 fitted to recessed parts 40, 60 formed on the back of the first pad member 4, 6. The second pad member 5, 7 is provided with an inlet hole 50, 70 penetrating from the back side to the surface side to introduce the air, and the first pad member 4, 6 is provided with a ventilation groove 41, 61 formed on the bottoms of the recessed part 40, 60 to blow out the air introduce from the inlet hole 50, 70 to the surface side, and a plurality of blow-off holes 42, 62 penetrating the first pad member 4, 6 from the ventilation groove 41, 61 to the surface side. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seat for a vehicle such as an automobile. In particular, the present invention relates to a vehicle seat provided with a ventilation mechanism for blowing air to at least one of a seat cushion and a seat back.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in some vehicle seats, a ventilation mechanism for blowing air to the front side of a seat cushion or a seat back is provided in order to eliminate discomfort when a seat is seated in a summer or a severe winter.
For example, a vehicle seat disclosed in Japanese Utility Model Laid-Open No. 58-112258 and Japanese Patent Publication No. 9-505499 has been known. According to the invention disclosed in Japanese Utility Model Laid-Open Publication No. 58-112258, a seat cushion has a pad material and a tube provided in the pad material. The tube discharges air into the pad material, and the air is blown out to the front side through the pad material.
However, this structure requires a tube inside the pad material, which is troublesome in manufacturing.
According to the invention disclosed in Japanese Patent Publication No. 9-505499, the seat cushion includes a pad material, and the pad material is formed with a through hole penetrating the pad material from the back side to the front side. Further, according to the present invention, there are disclosed a structure in which air introduced from one through hole is dispersed near the front surface of the seat cushion, and a structure in which air introduced near the back surface in front of the through hole is dispersed.
The structure dispersed near the surface is a structure having a dispersion layer formed of a material that transmits air on the surface of the pad material. Therefore, the air was introduced through the through holes, dispersed over the entire surface by the dispersion layer, and blown out over the entire surface of the seat cushion.
In the structure of dispersing near the back surface, a plate material is pressed against the back surface of the pad material by a spring. Then, a ventilation pipe for dispersing air is formed by the front surface of the plate material and the back surface of the pad material. Therefore, air is introduced from the opening formed in the plate material, and the air is dispersed by the ventilation pipe. The dispersed air was configured to pass through a plurality of through holes communicating with the ventilation pipe.
[0003]
[Problems to be solved by the invention]
However, also in the case of this structure, it is necessary to provide a dispersion layer or a plate material formed of a material different from the pad material. Therefore, there has been a problem that the manufacturing cost is increased.
In the case where the ventilation pipe is formed by preventing air from leaking between the plate material and the pad material, the structure is not easily configured. That is, a structure such as urging with a spring to strongly press the plate material against the pad material is required.
Accordingly, an object of the present invention is to provide a vehicle seat having a rational configuration such that a ventilation mechanism for blowing air to a seat cushion or a seat back can be easily configured.
[0004]
[Means for Solving the Problems]
According to another aspect of the present invention, there is provided a vehicle seat having a configuration as described in the above claims.
According to the first aspect of the present invention, the pad member includes the first pad member constituting the front side, and the second pad member fitted into the concave portion formed on the back surface of the first pad member. The second pad member has an introduction hole that penetrates from the back side to the front side to introduce air. Also, the first pad member has a ventilation groove formed on the bottom surface of the concave portion for blowing out the air introduced from the introduction hole to the front side, and a plurality of holes penetrating the first pad member from the ventilation groove toward the front side. Is formed, whereby the air introduced from the introduction hole is dispersed through the ventilation groove to the plurality of ejection holes, and is blown out from the plurality of ejection holes.
[0005]
That is, the first pad member and the second pad member are formed with a ventilation path (introduction hole, ventilation groove, blow-off hole) for passing air. The first pad member and the second pad member are both pad materials and can be formed of the same material. Thus, the ventilation mechanism can be easily formed.
The air introduced from the introduction hole is guided into the pad material through the second pad member. And it is dispersed inside. That is, air is dispersed between the second pad member and the ventilation groove of the first pad member. Therefore, the air is dispersed with little leakage, and the structure is constituted by an easy structure of fitting the second pad member to the first pad member.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
A vehicle seat 1 according to an embodiment of the present invention is a seat mounted in a vehicle interior of a vehicle such as an automobile, and as shown in FIG. 1, a seat cushion 2 on which an occupant sits, and a backrest of the occupant. And a seat back 3.
[0007]
As shown in FIG. 2, the seat cushion 2 mainly includes a frame 22 attached to the vehicle, a pad material 20 attached to the frame 22, and a cover 21 that covers the surface of the pad material 20. . The seat cushion 2 has a fan 23 on the back side, and has a ventilation mechanism for blowing air sent from the fan 23 to the front side.
As shown in FIG. 2, the seat back 3 mainly includes a frame 32, a pad material 30 mounted on the frame 32, and a cover 31 that covers the surface of the pad material 30. The seat back 3 has a fan 33 on the back side, and has a ventilation mechanism for blowing air sent from the fan 33 to the front side.
[0008]
The frame 22 is a member that supports the bottom side of the pad material 20 of the seat cushion 2, and includes a plate-shaped front portion 22a that supports the front side of the pad material 20 and a rear side of the pad material 20 as shown in FIG. A hollow rod-shaped rear portion 22b extending in the vehicle width direction is integrally formed.
The frame 22 has an opening 22c between the plate-shaped front portion 22a and the hollow bar-shaped rear portion 22b, and a plurality of springs 24 extending in the vehicle width direction are attached to the opening 22c in parallel.
[0009]
As shown in FIG. 4, the pad material 20 has a first pad member 4 forming a front side and a second pad member 5 forming a back side. The first pad member 4 and the second pad member 5 are both formed of a highly elastic resin having little air permeability, for example, a urethane resin.
Further, the first pad member 4 has a concave portion 40 on the back surface as shown in FIG. The second pad member 5 is formed slightly larger than the periphery of the concave portion 40, and is fitted into the concave portion 40 while being elastically compressed. Alternatively, the second pad member 5 is fitted into the concave portion 40 by elastically expanding the concave portion 40.
Thus, the second pad member 5 is attached to the back surface 4b of the first pad member 4 (the bottom surface 40a of the recess 40). Since the first pad member 4 and the second pad member 5 are fitted by utilizing these elastic deformations, they are easily attached.
[0010]
The fan 23 is a device that takes in room air and generates wind, and is attached to the frame 22 via a spring 24 as shown in FIG. Further, a pipe 25 for sending air from the fan 23 to the pad material 20 is attached to the fan 23.
In addition, the second pad member 5 is formed with an introduction hole 50 for introducing the wind sent from the fan 23 into the inside of the pad material 20 as shown in FIG. The introduction hole 50 is provided at a substantially central position of the second pad member 5 and penetrates in the thickness direction from the back side 5b of the second pad member 5 toward the front side 5a. The leading end of the pipe 25 is inserted into the introduction hole 50.
[0011]
As shown in FIG. 4, the first pad member 4 is provided with a ventilation groove 41 and a blowout hole 42 for blowing out the air introduced from the introduction hole 50 to the front side.
As shown in FIG. 4, the ventilation groove 41 is formed in a groove shape on the back surface 4 b of the first pad member 4 and on the bottom surface 40 a of the concave portion 40. As shown in FIG. 5, the ventilation groove 41 includes two vertical grooves 41a extending in the vehicle front-rear direction and a plurality (for example, ten) horizontal grooves 41b extending from the vertical groove 41a in the vehicle width direction. Have. The two vertical grooves 41a extend in a substantially X-shape with an intersecting portion, and an opening of the introduction hole 50 is provided at the intersecting portion.
[0012]
As shown in FIGS. 2 and 3, when the second pad member 5 is fitted into the concave portion 40 of the first pad member 4, the ventilation groove 41 forms a ventilation path in cooperation with the surface of the second pad member 5. Has formed. That is, a tubular ventilation path having the wall surface forming the ventilation groove 41 and the surface of the second pad member 5 as the wall surface is formed.
As shown in FIG. 3, the first pad member 4 has a plurality of blowout holes 42 penetrating from the ventilation groove 41 to the surface 4 a of the first pad member 4.
As shown in FIG. 4, these blowout holes 42 are formed in the lateral groove portions 41b, for example, two in each lateral groove portion 41b.
The cover 21 is formed of a highly breathable sheet material (skin material).
[0013]
Therefore, the air sent from the fan 23 penetrates the second pad member 5 through the introduction hole 50 of the second pad member 5 and is introduced into the inside of the pad material 20.
The air introduced into the pad material 20 is widely dispersed in the pad material 20 through a ventilation path mainly formed by the ventilation groove 41 formed in the first pad member 4.
That is, the air is dispersed in the longitudinal direction of the vehicle by the longitudinal grooves 41a, and is dispersed in the vehicle width direction by the lateral grooves 41b. Then, the dispersed air is blown out to the surface side of the pad material 20 through the blowout holes 42, and further blows out to the front side of the seat cushion 2 through the cover 21.
[0014]
Further, the blowout hole 42 is provided at a position shifted from a position above the opening of the introduction hole 50 as shown in FIG. Therefore, the air introduced from the introduction hole 50 hits the bottom surface of the ventilation groove 41, is dispersed along the ventilation groove 41, and is blown out from the outlet 42 after being dispersed.
Thus, strong wind is prevented from being blown out from one blowout hole 42, whereby the airflow from the plurality of blowout holes 42 can be distributed substantially evenly.
The outlet 42 may have a structure in which the diameter is taken into account in order to adjust the amount of the outlet. For example, a structure may be employed in which the diameter of the blowout hole 42 closer to the introduction hole 50 is reduced.
[0015]
In addition, on the bottom surface 40a of the concave portion 40 of the first pad member 4, a column portion 43 which is a portion where the ventilation groove 41 is not formed as shown in FIG. . That is, as shown in FIG. 3, the pillar portion 43 is in contact with the second pad member 5 and supports the weight of the occupant sitting on the surface side of the first pad member 4. Therefore, the pillar portion 43 prevents the ventilation groove 41 from being crushed in the thickness direction.
[0016]
The seat back 3 is formed substantially in the same manner as the seat cushion 2.
That is, the seat back 3 includes a pad material 30, a frame 32, a cover 31, and a fan 33 as shown in FIG. The pad material 30 has a first pad member 6 and a second pad member 7.
The pad material 30 is formed in a hook shape so as to engage with the upper part of the frame 32 as shown in FIG. 2, but the other parts are formed in substantially the same manner as the pad material 20. Further, the cover 31 and the fan 33 are formed in substantially the same manner as the cover 21 and the fan 23 of the seat cushion 2.
[0017]
As shown in FIG. 2, the frame 32 is a member that supports the pad material 30 of the seatback 3, and is formed in a frame shape along a peripheral portion on the back side of the seatback 3. Further, a plurality of springs 34 extending in the vehicle width direction are attached to the frame 32 as shown in FIG.
The seat back 3 has a back cover 36 that covers the back surface as shown in FIG. 2, and the back cover 36 is formed using a sheet material (skin material) or a plate material. The fan 33 is attached to the back cover 36 or the frame 32.
In addition, each member and each part of the seat back 3 which is configured substantially similarly to each member and each part corresponding to the seat cushion 2 will not be described. 3 to 7 show the numbers in parentheses.
[0018]
The vehicle seat 1 is configured as described above.
That is, the vehicle seat 1 has a seat cushion 2 and a seat back 3, and the seat cushion 2 and the seat back 3 are provided with a ventilation mechanism. The ventilation path (introduction hole, ventilation groove, blowout hole) of the ventilation mechanism is formed by the pad material 20. That is, it is formed by the first pad member 4 (6) and the second pad member 5 (7), both of which are formed of a material that does not transmit air or the same material that does not easily transmit air. Therefore, the seat cushion 2 and the seat back 3 can be formed from a small number of materials, and can be configured at low cost.
[0019]
Air is introduced into the pad material 20 (30) from one introduction hole 50 (70), and is blown out from the plurality of blowout holes 42 (62). Therefore, the air is introduced from one inlet, and the air can be easily introduced.
As shown in FIG. 2, the air is introduced into the pad material 20 (30), that is, between the second pad member 5 (7) and the first pad member 4 (6). And it is distributed by the ventilation path formed by the ventilation groove 41 (61) of the first pad member 4 (6). Therefore, the introduced air is dispersed by the inside of the pad material 20 (30) in a state of little leakage.
[0020]
Also, since the second pad member 5 (7) is fitted into the recess 40 (60) of the first pad member 4 (6) as shown in FIG. 2, the second pad member 5 (7) is easily attached to the first pad member 4 (6). And the air introduced between them is less likely to leak. That is, the second pad member 5 (7) not only abuts on the bottom surface of the concave portion 40 (60), but also has its peripheral edge surface abutting on the peripheral wall surface of the concave portion 40 (60). Therefore, the first pad member 4 (6) and the second pad member 5 (7) abut on a large area. Thus, it is difficult to form a path for the air introduced into the pad material 20 (30) to leak from the ventilation path.
[0021]
Moreover, the first pad member 4 (6) and the second pad member 5 (7) are fitted by at least one of them being elastically deformed. Therefore, a gap is not easily formed between them. Thus, the air introduced into the ventilation groove 41 (61) formed in the first pad member 4 (6) is unlikely to leak out of the ventilation path.
Further, since the second pad member 5 (7) is fitted into the concave portion 40 (60) on the back surface of the first pad member 4 (6), the front side (the occupant's seating surface side) of the pad members 20 and 30 has The joint between the pad members 4, 5 (6, 7) does not appear. Thus, the surfaces of the pad materials 20 and 30 do not exhibit the discontinuity of the cushioning property due to the joints, and the sitting comfort is good.
[0022]
Further, as shown in FIG. 2, both the ventilation groove 41 (61) and the plurality of outlet holes 42 (62) are formed in the first pad member 4 (6). Therefore, when assembling the second pad member 5 (7) to the first pad member 4 (6), the ventilation groove 41 (61) and the plurality of blow-out holes 42 (62) are not displaced from each other. There is no risk of blockage of the ventilation path.
[0023]
In the present embodiment, the following embodiment is preferable.
That is, it is preferable that the ventilation grooves (41, 61) are formed by the ventilation grooves 80 in the form shown in FIG. 6 or the ventilation grooves 81 in the form shown in FIG.
The ventilation groove 80 is a groove formed in a substantially semicircular cross section as shown in FIG. That is, a ventilation path is formed in a semi-cylindrical shape by the ventilation groove 80 and the second pad member 5 (7). Therefore, when an external force (such as the weight of the occupant) is applied to the first pad member 4 (6), the external force is efficiently dispersed by the shape of the ventilation groove 80. Therefore, the ventilation groove 80 is hard to collapse and is strong against external force.
[0024]
As shown in FIG. 7, the ventilation groove 81 has a main groove 81a which is a main body, and a plurality of rectification grooves 81b for rectifying air flowing in the main groove 81a. As shown in FIG. 7, the flow regulating groove 81b is formed in a concave shape (groove shape) on the wall surface of the main groove 81a, and is formed along the extending direction of the main groove 81a.
The rectifying groove 81b is formed on the upper wall surface of the main groove 81a as shown in FIG. Therefore, the wind flowing in the extending direction in the main groove 81a prevents generation of turbulent flow due to friction caused by the wall surface of the main groove 81a. Thus, the wind flows along the ventilation groove 81 while being rectified by the rectification groove 81b.
Thus, the wind can easily flow by the force of the fan 23 (33), and as a result, can flow by a small force.
[0025]
In the present embodiment, the ventilation mechanism is formed on both the seat cushion and the seat back, but the ventilation mechanism may be formed on one of them.
Further, in this embodiment, the fan is blown to the pad material. However, a form in which air is blown to the pad material by wind power from an air conditioner provided in the vehicle may be used. In this case, the temperature of the blown air can be easily adjusted.
[0026]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the vehicle seat which concerns on this invention, the ventilation mechanism which blows off air can be comprised easily in a seat cushion or a seat back.
[Brief description of the drawings]
FIG. 1 is a perspective view of a vehicle seat.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is a perspective view of a first pad member and a second pad member as viewed from the back side.
FIG. 5 is a bottom view from the back side of the first pad member.
6 is a cross-sectional view illustrating one embodiment of a ventilation groove, and is a partially enlarged cross-sectional view corresponding to a cross-sectional view taken along line CC of FIG.
7 is a cross-sectional view illustrating another embodiment of the ventilation groove, and is an enlarged partial cross-sectional view corresponding to a cross-sectional view taken along line CC of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Seat cushion 3 ... Seat back 4, 6 ... First pad member 5, 7 ... Second pad member 20, 30 ... Pad material 21, 31 ... Cover 22, 32 ... Frame 23, 33 ... Fan 24, 34 ... springs 40, 60 ... recesses 41, 61, 80, 81 ... ventilation grooves 42, 62 ... blowing holes 50, 70 ... introduction holes

Claims (1)

At least one of the seat cushion or the seat back, a vehicle seat provided with a ventilation mechanism for blowing air to the front side,
The pad material of the seat cushion or the seat back includes a first pad member constituting a front side, and a second pad member fitted into a concave portion formed on the back surface of the first pad member,
An introduction hole is formed in the second pad member to penetrate from the back side to the front side to introduce air,
In order to blow out the air introduced from the introduction hole to the front side, the first pad member has a ventilation groove formed on the bottom surface of the concave portion, and the first pad member is directed from the ventilation groove toward the front side. A plurality of blow-off holes are formed,
Thereby, the vehicle seat is configured such that the air introduced from the introduction hole is dispersed through the ventilation groove to the plurality of outlet holes and blows out from the plurality of outlet holes.

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