JP2012001134A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the mounting work efficiency of a duct member while the wind is fed from one fan by one duct member without providing any fan mounting structure or any duct structure on a cushion pad.SOLUTION: An exhaust port 67 of a duct member 65 is connected to edges 37, 57 connected to each other in a communicated state so that the wind from a fan 61 can be fed to ventilation layers 35, 55 of the edges 37, 57 connected to each other at a boundary part 15. Layered pad parts 33, 53 having the ventilation layers 35, 55 capable of attaining the ventilation over the extending ranges of skin cover parts 31, 51 are arranged on both a seat cushion cover member 30 and a seat back cover member 50. In the layered pad parts 33, 53, a surface side mesh part and a back side mesh part are coupled with each other and supported by a plurality of elastically deformable columnar parts being interposed therebetween.

Description

  The present invention relates to a vehicle seat installed in a vehicle such as an automobile, and more specifically, a vehicle equipped with a blowing function for blowing air from both a seat cushion and a seat back to a seated person by a blower installed inside the seat. Related to the sheet.

A vehicle seat on which a passenger is seated is installed in a vehicle such as an automobile. The vehicle seat includes a seat cushion as a seat on which an occupant is seated, and a seat back that serves as a backrest when the occupant is seated on the seat cushion. As such a vehicle seat, there is known a vehicle seat having a blowing function of blowing air from both a seat cushion and a seat back toward a seated person by a blower installed inside the seat.
In such a vehicle seat, in order to blow out the wind from the blower to the seated person side, in addition to the blower, a blower mounting structure for attaching the blower, a duct structure for distributing and guiding the wind from the blower over a wide range, etc. It is necessary to provide the following structure (hereinafter, these may be collectively referred to as “air blowing structure”). Such a blower structure is generally provided by appropriately cutting a cushion pad provided on the lower side of a cover member of a vehicle seat (see, for example, Patent Document 1 and Patent Document 2). .

JP 2000-116462 A JP 2006-51351 A

On the other hand, the cushion pad described above is formed of a resin molded product such as urethane resin in order to give the vehicle seat cushion performance. For this reason, in order to arrange | position the above-mentioned ventilation structure to this pad for cushions, it is necessary to adhere | attach the several resin molded products which were die-cut, and to form a cavity part inside the pad for cushions.
On the other hand, the number of blowers and duct members arranged for blowing air from both the seat cushion and the seat back should be one each from the viewpoint of manufacturing cost and work. I want.

However, when the air blowing structure described above is disposed in the cushion pad, the cavity portion is formed inside, thereby lowering the rigidity of the cushion pad itself and impairing the original cushion performance. In addition, in order to form the hollow portion, a plurality of molding dies must be prepared, the procedure of the molding and bonding step is increased, the molding cost is expensive, and the manufacturing work is complicated.
In addition, when the blower and the duct member are provided one by one as described above, when the wind is distributed toward both the seat cushion and the seat back, the duct member must have a complicated structure that can be distributed. Along with this, the installation work of the duct member becomes complicated.

  This invention is made | formed in view of such a situation, Comprising: The subject which this invention tends to solve blows off wind from both a seat cushion and a seat back to the seated person side with the air blower installed in the inside of a seat. In a vehicle seat having an air blowing function, the duct member can be attached and operated without being provided with a fan attachment structure or a duct structure on the cushion pad while allowing one air to be sent from one fan. There is also to improve.

In solving the above-described problems, the vehicle seat according to the present invention employs the following means.
That is, the vehicle seat according to the first aspect of the present invention includes a seat cushion as a seat on which an occupant is seated, and a seat back that is a backrest when the occupant is seated on the seat cushion. And a seat for a vehicle that blows air toward the seated person from both of the seat backs, wherein one of the seat cushion and the seat back has one blower and the one blower A duct member that guides the air blown from the seat is disposed, and at least a seat cushion cover member that covers the seat cushion is disposed at a portion of the seat cushion that blows the wind toward the seated person. A seat back cover that covers the seat back at least at a portion of the seat back that blows wind toward the seated person Members are disposed, and both the seat cushion cover member and the seat back cover member extend to the skin cover part that forms the exterior surface and the extension range of the skin cover part. A layered pad part that is integrally bonded to the back surface of the part, and the layered pad part is formed to include a ventilation layer that extends to the extension range of the skin cover part and allows ventilation. The cushion cover member and the seat back cover member are configured to connect the edges of the seat cushion and the seat back to each other at a boundary portion where the ends of the seat cushion and the seat back are adjacent to each other. The exhaust side of the duct member that guides the wind can send the wind from the blower to the ventilation layers of the edges connected at the boundary portion. In so that, characterized in that it is connected in articulated state for these concatenated edges together.

According to the vehicle seat pertaining to the first aspect of the invention, the exhaust side of the duct member is configured so that the wind from the blower can be sent to the mutual ventilation layers of the edges connected at the boundary portion. The connected edges are connected in a connected state. As a result, one duct member that guides the wind can distribute the wind toward both the seat cushion and the seat back without having a distributable structure. Therefore, the shape of such a duct member can be simplified, and the mounting operation of the duct member can be simplified.
Further, according to the vehicle seat pertaining to the first aspect of the present invention, the layered pad having the ventilation layer that extends through the extending range of the skin cover portion and is ventilated in both the seat cushion cover member and the seat back cover member Since the portion is disposed, the wind sent as described above can be expanded and sent without forming a hollow portion inside the cushion pad. As a result, the cushion pad is not provided with a blower mounting structure or a duct structure, so that a decrease in rigidity of the cushion pad itself due to the formation of a hollow portion inside the cushion pad can be prevented. It is possible to eliminate only the bonding process in the manufacturing process and to have only a simple molding process.
Therefore, while improving the cushion performance, the cushion pad molding operation can be simplified and the cushion pad molding cost can be reduced, and the air can be sent by one duct member from one blower. The mounting workability of the duct member can also be improved.

The vehicle seat according to a second aspect of the invention is the vehicle seat according to the first aspect of the invention, wherein the layered pad portion supports the front and back surfaces by interposing a plurality of elastically deformable columnar portions. The ventilation part of the ventilation layer uses a gap formed between the columnar parts.
According to the vehicle seat pertaining to the second aspect of the present invention, the layered pad portion is formed by a structure (for example, a truss structure) that supports the front surface and the back surface by interposing a plurality of elastically deformable columnar portions. In addition, since the ventilation portion of the ventilation layer uses the gap formed between the columnar portions, the layered pad portion can be rich in air permeability while being rich in cushioning properties. . Accordingly, the cushion performance can be improved while the seat cushion cover member and the seat back cover member have ventilation performance capable of smoothly sending air from the blower.

A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the first or second aspect of the present invention, wherein the seat cushion cover member and the seat back cover member are connected to each other with respect to edges thereof. When connecting the exhaust side of the duct member in a connected state, both sides of each other in the sheet width direction are stitched together.
According to the vehicle seat pertaining to the third aspect of the invention, when connecting the exhaust side of the duct member to the edges of the cover member in a connected state, both sides in the seat width direction are stitched together. Therefore, the ventilation layer of the above layered pad portion can be connected by stitching without hindering the flow of wind. Accordingly, the exhaust side of the duct member can be connected to the edges of the cover member by stitching without interfering with the wind flow in the direction intersecting the sheet width direction.

According to the vehicle seat pertaining to the first aspect of the invention, the cushion pad molding operation can be simplified and the cushion pad molding cost can be reduced while improving the cushion performance. In addition, it is possible to improve the workability of installing the duct member while allowing the wind to be sent.
According to the vehicle seat relating to the second invention, the seat cushion cover member and the seat back cover member are improved in cushioning performance while having ventilation performance capable of smoothly sending air from the blower. It can be.
According to the vehicle seat pertaining to the third aspect of the invention, the exhaust side of the duct member can be connected to the edges of the cover member by stitching without interfering with the wind flow in the direction intersecting the seat width direction. it can.

1 is a schematic cross-sectional view schematically showing a vehicle seat as viewed from the side in a cross-section in the front-rear direction of the seat. It is a cross-sectional enlarged schematic diagram which expands and shows the cross section of a cover member. It is a cross-sectional schematic diagram which expands and shows the boundary part which the edge parts of the seat cushion and seat back in FIG. 1 adjoin. It is a perspective schematic diagram which shows the edges of the cover member of a state before a connection, and a duct member. It is a perspective schematic diagram which shows the edges of the cover member of a state after a connection, and a duct member. It is a cross-sectional schematic diagram which shows the VI-VI cross-section arrow in FIG. It is a cross-sectional schematic diagram which expands and shows about the suspended part of a cover member.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for implementing a vehicle seat according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view schematically showing a vehicle seat 10 as viewed from the side in a cross-section in the longitudinal direction of the seat. In FIG. 1, the left direction in the drawing is set as the front direction of the vehicle seat 10, and the right direction in the drawing is set as the rear direction of the vehicle seat 10. Further, in FIG. 1, the depth direction in the drawing is set to the width direction of the vehicle seat 10. In addition, the code | symbol P in FIG. 1 is the seated person (passenger) who is virtually seated in this vehicle seat 10. FIG.
A vehicle seat 10 shown in FIG. 1 is installed in a vehicle such as an automobile. The vehicle seat 10 includes a seat cushion 20 as a seat on which an occupant is seated, and a seat back 40 that is a backrest when the occupant is seated on the seat cushion 20. The vehicle seat 10 has a blowing function for blowing wind from both the seat cushion 20 and the seat back 40 toward the seated person P, and this blowing function will be described in detail below. In addition, in FIG. 1, the headrest which becomes the headrest of the seated person P is abbreviate | omitting illustration.
The seat cushion 20 generally includes a frame 21, a cushion pad 23, and a seat cushion cover member 30. The seat back 40 also includes a frame 41, a cushion pad 43, and a seat back cover member 50, similar to the seat cushion 20. Explaining these parts, the frames 21 and 41 form the framework of the vehicle seat 10 and are formed by bending an appropriate metal pipe or the like. The cushion pads 23 and 43 are for giving the vehicle seat 10 cushion performance, and are formed by resin molding urethane resin or the like. For this reason, although the pads 23 and 43 for cushions are excellent in cushioning performance, they have almost no ventilation performance. The cover members 30 and 50 will be described in detail later.

Next, the seat cushion cover member 30 and the seat back cover member 50 as cover members will be described. As shown in FIG. 1, the seat cushion cover member 30 is disposed at a site on the seated person P side of the seat cushion 20 and covers the cushion pad 23. Further, as shown in FIG. 1, the seat back cover member 50 is also disposed at a portion of the seat back 40 on the seated person P side, like the seat cushion cover member 30, and the cushion pad 43 is provided. Cover. The seat cushion cover member 30 and the seat back cover member 50 are configured by adopting the following cover member structure so that the wind can be blown toward the seated person P. FIG. 2 is an enlarged schematic cross-sectional view showing an example of a cross section of a cover member used as the seat cushion cover member 30 and the seat back cover member 50. As shown in FIG. 2, both the seat cushion cover member 30 and the seat back cover member 50 are roughly provided with skin cover portions 31 and 51 and layered pad portions 33 and 53. Cushion pads 23 and 43 are disposed on the back side of the seat cushion cover member 30 and the seat back cover member 50.
The skin cover portions 31 and 51 form an exterior surface of the seat cushion 20 and the seat back 40. The skin cover portions 31, 51 are formed of two layers of skins 31a, 51a and pad covers 31b, 51b. The skins 31a and 51a are formed of a leather product provided with appropriate ventilation holes. The pad covers 31b and 51b are formed of a foamed urethane resin having an appropriate thickness and excellent air permeability. For this reason, the skin cover parts 31 and 51 as a whole have excellent air permeability.

  On the other hand, the layered pad portions 33 and 53 extend in accordance with the extending range of the skin cover portions 31 and 51 and are integrally bonded to the back surfaces of the skin cover portions 31 and 51. The layered pad portions 33 and 53 are formed in a layered structure including ventilation layers 35 and 55 that extend to the extending range of the skin cover portions 31 and 51 and allow ventilation. Specifically, the layered pad portions 33 and 53 include surface mesh portions 33a and 53a forming a front surface, back mesh portions 33b and 53b forming a back surface, and a plurality of columnar portions 33c and 53c interposed therebetween. It is formed by the layered truss structure provided with. Both the front surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b are formed in the same manner, and are formed by forming an elastically deformable resin into a breathable mesh shape. For this reason, the front surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b have a property of allowing ventilation. The columnar portions 33c and 53c are interposed between the front surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b, and the resin of the front surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b. At the same time as molding, they are molded integrally with them. The front surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b are formed to extend in the plane direction. On the other hand, the plurality of columnar portions 33c, 53c extend in a direction intersecting the plane direction in which the mesh portions 33a, 33b,... Extend at appropriate intervals, and the mesh portions 33a, 33b,. Is formed to have a columnar structure. Here, the columnar portions 33c and 53c are integrally formed of the same resin as the mesh portions 33a, 33b,... And have a property of being elastically deformable. That is, the front surfaces (surface mesh portions 33a and 53a) and the back surfaces (rear surface mesh portions 33b and 53b) are coupled to both ends of the columnar portions 33c and 53c, and the columnar portions 33c and 53c are connected to the mesh portions 33a and 53c. 33b,... Are formed in a column shape that elastically supports each other. For this reason, the columnar portions 33c and 53c are elastically supported while allowing a deviation between the front surface (front surface mesh portions 33a and 53a) and the back surface (rear surface mesh portions 33b and 53b). 53 itself exhibits cushioning performance.

Note that these columnar portions 33c and 53c form a single columnar shape independent of each other. For this reason, when the columnar portions 33c and 53c extending over a partial range of the layered pad portions 33 and 53 are deformed, the columnar portions 33c and 53c extending over other ranges are deformed following the deformation. It has no characteristics. That is, even if some parts of the layered pad portions 33 and 53 are elastically deformed, the other parts of the layered pad portions 33 and 53 are not elastically deformed following the elastic deformation of the some parts. The shape as it is is easily maintained.
As described above, the layered pad portions 33 and 53 formed in the layered structure have the columnar portions interposed between the surface mesh portions 33a and 53a forming the front surface and the back surface mesh portions 33b and 53b forming the back surface. The portions where a plurality of 33c and 53c are formed are configured as ventilation layers 35 and 55. The ventilation portions constituting the ventilation layers 35 and 55 utilize gaps 34 and 54 formed between the plurality of columnar portions 33c and 53c. That is, the ventilation layers 35 and 55 are configured to ventilate between the plurality of columnar portions 33c and 53c.

3 is an enlarged schematic cross-sectional view of the boundary portion 15 where the end portions 27 and 47 of the seat cushion 20 and the seat back 40 in FIG. 1 are adjacent to each other. FIG. 4 is a schematic perspective view showing the edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 before connection and the duct member 65 of the blower 60. FIG. 5 is a schematic perspective view showing the edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 in the post-connection state and the duct member 65 of the blower 60. 6 is a schematic cross-sectional view taken along the line VI-VI in FIG.
As shown in FIGS. 1 and 3, the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 are adjacent to the boundary portion 15 where the end portions 27 and 47 of the seat cushion 20 and the seat back 40 are adjacent to each other. In FIG. 3, the end edges 37 and 57 are connected to each other. Specifically, as shown in FIGS. 3 and 4, the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 are stitched so that the vicinity thereof extends in the seat width direction. Are connected to each other. Reference numeral 38 denotes a stitched portion in which the end edges 37 and 57 are stitched together, and the ends of the seat cushion cover member 30 and the seat back cover member 50 are mutually stitched by the stitched portion 38 in this manner. The edges 37 and 57 are integrated with each other. As described above, the edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 connected at the boundary portion 15 are arranged so that the wind from one blower 60 described below is mutually ventilated. 35 and 55 are sent.

By the way, the end edges 37 and 57 are suspended toward each other as the boundary portion 15 between the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 thus connected. The extending part 39 for suspension is provided for doing so (arrow shown in the figure). The extending portion 39 for suspension may be appropriately disposed between the end edges 37 and 57, or may be constituted by the connected end edges 37 and 57 themselves. May be. Moreover, this extending part 39 for suspension is pulled so that it may suspend toward the inside of the duct member 65 (boundary part 15), and the edges 37 and 57 when suspended in this way are boundary. It will be located in part 15.
Further, when these end edges 37 and 57 are connected to each other by the stitching portion 38, the non-ventilated covers 36 and 56 having non-breathability are also stitched together. That is, as shown in FIG. 1, in the vicinity of these end edges 37 and 57, the blowout of the sent wind toward the seating side does not blow out too much along the exhaust direction of the duct member 65. The non-ventilated covers 36 and 56 are sewn together together with the stitches of the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 described above. Specifically, as shown in FIGS. 4 to 6, the non-ventilated covers 36 and 56 are stitched together by the stitching portion 38 together with stitching of the end edges 37 and 57.

As shown in FIG. 1, one air blower 60 is disposed inside the vehicle seat 10. The blower 60 includes one blower 61 disposed inside the seat cushion 20 and one duct member 65 that guides the wind blown from the one blower 61. The blower 61 is fixedly attached to the frame 21 of the seat cushion 20 described above. The blower 61 is a centrifugal blower also referred to as a blower. As shown in FIG. 1, when air is pumped, the blower 61 sucks air from an intake port 62 positioned in the axial direction of the rotating shaft, and in the centrifugal direction of the rotating shaft. It is configured to exhaust from the exhaust port 63 located.
As shown in FIG. 1 and the like, an intake port 66 of a duct member 65 described below is connected to the exhaust port 63 of the blower 61 configured as described above so as to allow ventilation. The duct member 65 is formed with an appropriate pipe structure so as to guide the air blown from the intake side (intake port 66) to the exhaust side (exhaust port 67). The duct member 65 is configured to be deformable and flexible. For this reason, the duct member 65 is formed by thinly molding a resin material that is a soft material. The concrete shape of the duct member 65 is as shown in FIGS. That is, the duct member 65 is formed in a cylindrical structure on the intake side connected to the blower 61, and the exhaust side connected to the edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 has a wide opening. It is formed with a structure. Specifically, the intake side of the duct member 65 has a cylindrical shape that allows ventilation, and an end portion of the duct member 65 is formed as an intake port 66. Further, the exhaust side of the duct member 65 has a wide opening shape so as to cover the edges 37 and 57 to be stitched, and the end portion is formed as an exhaust port 67. . The area of the ventilation cross section inside the duct member 65 is formed so as to gradually increase from the intake side to the exhaust side.

The intake port 66 of the duct member 65 formed in this way is connected in communication with the exhaust port 63 of the blower 61. On the other hand, the exhaust port 67 of the duct member 65 is a blower with respect to the ventilation layers 35 and 55 of these edge 37,57 with respect to the edge 37,57 connected as mentioned above. It is connected in a connected state so that the wind from 61 can be sent. That is, as shown in FIG. 6, the exhaust port 67 of the duct member 65 covers the edges 37, 57 between the edges 37, 57 so as to cover the edges 37, 57 to be stitched at the boundary portion 15. It is connected. Specifically, the exhaust port 67 of the duct member 65 is connected so as to cover at least the portion of the stitched portion 38 to be sewn, and thereby the exhaust of the duct member 65 that guides the wind from the blower 61. The side of the edges 37 and 57 is connected to each other so that the air from the blower 61 can be sent to the ventilation layers 35 and 55 of the edges 37 and 57 connected at the boundary portion 15. Are connected in a connected state.
Here, when connecting the exhaust side of the duct member 65 to the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 connected in this manner in a connected state, the seat width direction of each other These two sides are connected to each other by stitching (the stitching portion 69 shown in FIG. 5). Specifically, as shown in FIG. 5, both side portions of the exhaust port 67 of the duct member 65 are on both sides in the seat width direction near the edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50. The portion and the stitching point 69 are sewn together.
Note that the exhaust port 67 of the duct member 65 connected in a connected state to the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 in this way is further provided with a hanging extension portion. By being suspended (pulled) inside the duct member 65 (boundary portion 15) at 39, the layered pad portions 33 and 53 are brought into close contact with each other. More specifically, as shown in FIG. 6, the exhaust port 67 of the duct member 65 is suspended (pulled) toward the inside (boundary portion 15) of the duct member 65 by the extending portion 39 for suspension. Thus, the cushion pads 23 and 43 are in close contact with and supported by the pad pads 33 and 53 of the cover members 30 and 50. Therefore, the exhaust port 67 of the duct member 65 that guides the wind from the blower 61 sends the wind from the blower 61 to the mutual ventilation layers 35 and 55 of the end edges 37 and 57 connected at the boundary portion 15. Are connected in a connected state. The cushion pads 23 and 43 are excellent in cushioning performance as described above, but have almost no ventilation performance. Therefore, when the cushion pads 23 and 43 are closely supported by the cushion pads 23 and 43, the cushion pads 23 and 43 are The wind is either ventilated in the ventilating layers 35 and 55 or is blown out from the skin cover portions 31 and 51 toward the seating side.

By the way, in the seat cushion cover member 30 and the seat back cover member 50 described above, a suspended portion 70 for enhancing the appearance design is provided in the same manner as a normal cover member. In addition, when the suspended portion 70 is provided for the seat cushion cover member 30 and the seat back cover member 50, both are provided with the same configuration. For this reason, in the following, an example in which the suspended portion 70 is provided with respect to the seat cushion cover member 30 will be described. FIG. 7 is an enlarged schematic cross-sectional view of the suspended portion 70 of the seat cushion cover member 30.
As shown in FIG. 7, in order to form the suspended portion 70 on the seat cushion cover member 30, the divided seat cushion cover members 30 are stitched together by a binding thread 71. And then. The binding site 72 that is sutured and bound by the binding thread 71 is suspended from the cushion pad 23 side. Here, since the binding part 72 stitched and bound by the binding thread 71 is not in a communicating state that allows air to pass through the binding, the following ventilation structure is provided.
That is, as shown in FIG. 7, a notch recess 73 is provided in the cushion pad 23 around the portion where the binding portion 72 is suspended. The cutout recess 73 is formed so as to cut out the cushion pad 23 appropriately. In this cut-out recess 73, a highly breathable cushion member 75 that secures breathability when the binding site 72 is suspended is embedded. Unlike the cushion pad 23 that does not have air permeability, the highly air permeable cushion member 75 embedded in the notch recess 73 is made of a material that allows ventilation. The highly breathable cushion member 75 is formed with a hanging groove 76 for hanging the above-described binding portion 72.
Thus, even if the binding part 72 is formed in order to provide the suspended portion 70 for enhancing the appearance design, the ventilation layer 35 (the seat cushion cover member 30) as shown by the arrow in FIG. ) Can be continuously sent from the blower 61.

According to the vehicle seat 10 configured as described above, the following operational effects can be achieved.
That is, according to the above-described vehicle seat 10, the duct from the blower 61 can be sent to the ventilation layers 35, 55 between the edges 37, 57 connected at the boundary portion 15. The exhaust port 67 (exhaust side) of the member 65 is connected in a connected state to the connected end edges 37 and 57. Thus, the one duct member 65 that guides the wind can distribute the wind toward both the seat cushion 20 and the seat back 40 without having a distributable structure. Therefore, the shape of the duct member 65 can be simplified, and the installation work of the duct member 65 can be simplified.
Further, according to the vehicle seat 10 described above, the air cushion layers 35 and 55 that extend over the extending range of the skin cover portions 31 and 51 and are ventilated are provided on both the seat cushion cover member 30 and the seat back cover member 50. Since the layered pad portions 33 and 53 are provided, the air sent as described above can be expanded and sent without forming a hollow portion inside the cushion pads 23 and 43. This eliminates the need to provide a blower mounting structure or a duct structure on the cushion pads 23 and 43. Therefore, it is possible to prevent the rigidity of the cushion pads 23 and 43 itself from being lowered due to the formation of the hollow portions inside the cushion pads 23 and 43, and to eliminate the bonding process in the manufacture of the cushion pads 23 and 43. Only a simple molding step.
Accordingly, the cushion pad molding work can be simplified and the cushion pad molding cost can be reduced while the cushion performance is good, and the air can be sent from one blower 61 by one duct member 65. However, the mounting workability of the duct member 65 can also be improved.

In addition, according to the vehicle seat 10 described above, the layered pad portions 33 and 53 include the surface mesh portions 33a and 53a and the back surface mesh portions 33b and 53b with a plurality of elastically deformable columnar portions 33c and 53c interposed therebetween. It is formed by a truss structure that is coupled and supported, and the ventilation portions 35 and 55 use the gaps 34 and 54 formed between the columnar portions 33c and 53c, so that the layered pad portions 33 and 53 are formed. Can be made to be rich in cushioning properties while being rich in breathability. Accordingly, the seat cushion cover member 30 and the seat back cover member 50 can be improved in cushion performance while having ventilation performance capable of smoothly sending wind from the blower 61.
Further, according to the vehicle seat 10 described above, the duct member is connected to the end edges 37 and 57 of the cover members 30 and 50 connected by stitching the both sides in the seat width direction (stitched portions 69). Since the exhaust side of 65 is connected in a connected state, the portions of the ventilation layers 35 and 55 of the layered pad portions 33 and 53 in which the wind does not easily flow due to stitching are limited to both side portions in the sheet width direction. Can do. That is, since both sides in the sheet width direction are stitched together, the ventilation layers 35 and 55 of the layered pad portions 33 and 53 can be connected by stitching without hindering the flow of wind. Accordingly, the exhaust side of the duct member 65 can be connected to the end edges 37 and 57 of the cover members 30 and 50 by sewing without hindering the flow of wind in the direction intersecting the sheet width direction.
Further, since the non-ventilated covers 36 and 56 are sewn together with the stitches of the end edges 37 and 57 of the seat cushion cover member 30 and the seat back cover member 50 described above, along the exhaust direction of the duct member 65. The air from the blower 61 becomes easy to spread in the extending direction of the layered pad portions 33 and 53 so as not to blow out too much.
Further, the above-described layered pad portions 33 and 53 have a characteristic that even if the columnar portions 33c and 53c over a part of the range are deformed, the columnar portions 33c and 53c over the other range do not follow and deform. Have Accordingly, even if a part of the range is elastically deformed by the buttocks and waist of the seated person P, the other range away from the duct member 65 is not deformed. That is, about the buttocks and waist | hip | lumbar part of the seating person P near the duct member 65, since the ventilation layer with which a ventilation function is ensured decreases, the blowing toward the seating person P decreases. Accordingly, the air is more easily ventilated toward the other range away from the duct member 65, and can be easily expanded in the extending direction of the layered pad portions 33 and 53.

It should be noted that the vehicle seat according to the present invention is not limited to the above-described embodiment, and may be configured by appropriately changing the location as follows.
For example, in the above-described embodiment, the ventilation layers 35 and 55 have a ventilation gap in a columnar structure including the front surface mesh portions 33a and 53a, the back surface mesh portions 33b and 53b, and the columnar portions 33c and 53c. 34 and 54 are formed. However, as the ventilation layer according to the present invention, in addition to such a form, the ventilation layer may be formed by forming the air flow path by adjusting the directionality of the fibers, and an appropriate aspect is provided. It may be adopted.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 15 Boundary part 20 Seat cushion 40 Seat back 21, 41 Frame 23, 43 Cushion pad 27, 47 End part 30 Seat cushion cover member (cover member)
50 Seat back cover member (cover member)
31, 51 Skin cover part 31a, 51a Skin 31b, 51b Pad cover 33, 53 Layered pad part 33a, 53a Surface mesh part 33b, 53b Back face mesh part 33c, 53c Columnar part 34, 54 Gap between columnar parts 35, 55 Ventilation layer 36, 56 Non-ventilated cover 37, 57 Edge 38 Stitching part 39 Suspension extension part 60 Blower 61 Blower 62 Air inlet (intake side)
63 Exhaust port (exhaust side)
65 Duct member 66 Intake port 67 Exhaust port 69 Stitching part 70 Suspension part 71 Bundling thread 72 Bundling part 73 Notch recess 75 Highly air-permeable cushion member 76 Suspension groove P Seated person

Claims (3)

A seat cushion as a seat on which an occupant sits, and a seat back that serves as a backrest when the occupant sits on the seat cushion, and blows air from both the seat cushion and the seat back to the occupant side A vehicle seat comprising:
In one of the seat cushion and the seat back, one blower and one duct member that guides the air blown from the one blower are disposed,
A seat cushion cover member that covers the seat cushion is disposed at a portion of the seat cushion that blows wind toward the seated person,
A seat back cover member that covers the seat back is disposed at a portion of the seat back that blows wind toward the seated person,
Both the seat cushion cover member and the seat back cover member are attached to the skin cover portion that forms the exterior surface and the back surface of the skin cover portion that extends according to the extension range of the skin cover portion. With a layered pad portion to be
The layered pad portion is formed with a ventilation layer that extends to the extension range of the skin cover portion and allows ventilation.
The seat cushion cover member and the seat back cover member are configured to connect the edges of the seat cushion and the seat back at the boundary portion where the ends of the seat cushion and the seat back are adjacent to each other.
The exhaust side of the duct member that guides the wind from the blower can send the wind from the blower to the ventilation layers of the edges connected to each other at the boundary portion. A vehicle seat characterized by being connected in a connected state to connected edges. The vehicle seat according to claim 1,
The layered pad portion is formed by a structure that supports a front surface and a back surface by interposing a plurality of elastically deformable columnar portions,
The vehicle seat, wherein the ventilation portion of the ventilation layer uses a gap formed between the columnar portions. The vehicle seat according to claim 1 or 2,
When connecting the exhaust side of the duct member to the end edges of the connected seat cushion cover member and the seat back cover member in an articulated state, both sides in the seat width direction are sewn together. A vehicle seat characterized by the above.

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