JP5423588B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat incorporating a blower.

As this type of vehicle seat, a vehicle seat disclosed in Patent Document 1 is known. The vehicle seat includes a seat cushion, a seat back, a headrest, and a blower. In the known technology, the gas blown from the blower can be blown to the occupant through the hole provided in the seat back.
Here, the headrest is a member attached to the upper portion of the seat back, and has a pair of stay members. A pair of stay members (both rod-shaped members) are arranged in parallel under the headrest.

The seat back is a member connected to the seat cushion so as to stand upright, and includes a frame member, a cushion material, and a pair of support members. The frame member is a frame-shaped member that forms a seat skeleton.
The cushion material is a member that covers the frame member to form the outer shape of the seat, and has a plurality of holes and an air flow path portion. The plurality of holes are through holes provided in the cushion material and open to the seating side. A ventilation flow path part is the structure which guides the ventilation of an air blower to a hole, and has a recessed part and a cover member. A recessed part is a recessed part (substantially rectangular shape in front view) provided in the back surface of the cushion material, and communicates with a plurality of holes. The lid member is a box (substantially rectangular) that can be fitted into the recess, and can be formed of, for example, a hard resin.
The pair of support members (both cylindrical members) are attached so as to protrude to the front side (side facing the lid member) of the upper part of the frame member and are arranged in parallel in the seat width direction.

In the known technique, after the lid member is fitted into the recess, the cushion material is covered from the upper side of the frame member. In addition, the lower surface of the lid member in the fitted state is disposed substantially horizontally. By connecting the air blower to the recess, the gas blown from the air blower can be blown out to the occupant from the hole of the seat back through the air flow passage portion.
Next, the headrest can be attached to the upper portion of the seat back by inserting each stay member into each support member.

JP 2010-273 A

By the way, in the known technique, a pair of support members protrudes from the front side of the seat (side facing the lid member). For this reason, in the known technique, when the cushion member is put on the frame member, the lower surface of the lid member comes into contact with the support member from the front (contacts at a right angle), etc. there were.
Of course, the operator can put the cushion material on the frame member while avoiding the interference between the protruding portion and the lid member, but this makes the arrangement work of the cushion material and the like troublesome (having a configuration slightly inferior in workability). .
The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to provide a cushion member and a blower device with good workability with respect to a frame member.

As means for solving the above problems, a vehicle seat of the first invention includes a seat cushion, a seat back connected to the seat cushion so as to be able to stand upright, and an air blower disposed in the seat back. . The gas blown from the blower can be blown to the occupant through the hole provided in the seat back.
The seat back includes a frame member that forms a seat skeleton, a cushion material that covers the frame member to form a seat outer shape, a recess that is provided in the cushion material and communicates with the hole, and a lid member that can cover the recess. .

In the present invention, the blower is communicated with the recess while covering the recess with the lid member. The frame member has a projecting portion projecting to the side facing the lid member, and the projecting portion can be brought into contact with the end portion of the lid member when the frame member is covered with a cushioning material. In this type of seat configuration, it is desirable that the cushion member and the blower can be disposed with good workability with respect to the frame member.
Therefore, in the present invention, the end portion of the lid member described above has an inclined surface that is inclined toward the sheet width direction and can come into contact with the protruding portion. And, for example, by putting the inclined surface into contact with the protruding portion (not at right angles) in the middle of covering the frame member with the cushion material, it is possible to reduce the external force applied to the lid member (external force applied in the release direction). .

The vehicle seat of the second invention is the vehicle seat of the first invention and has a headrest that can be attached to the upper portion of the seat back. Then, the headrest is attached to the seat back by inserting the pair of stay members of the headrest into the pair of support members of the frame member. In this invention, a frame member has a pair of support member as a protrusion part in parallel in a sheet | seat width direction.
Therefore, in the present invention, the end of the lid member has a pair of inclined surfaces (for example, a pair of facing inclined surfaces). In the middle of covering the cushion member on the frame member, the inclined surfaces can be brought into contact with the pair of support members, respectively (further, the seat structure has better workability).

  According to the first aspect of the present invention, the cushion member and the blower can be disposed with good workability with respect to the frame member. Further, according to the second aspect of the invention, it is possible to obtain a sheet configuration with better workability.

It is a perspective view of a vehicle seat. It is a see-through | perspective front view of a seat back. It is a longitudinal cross-sectional view of a part of the seat back. It is a perspective view of a cushion material (concave part) and a lid member. It is a partial longitudinal cross-sectional view of a seat configuration, and is a view in the middle of covering a frame member with a cushion material. It is a partial longitudinal cross-sectional view of the seat configuration, and is a view after a frame member is covered with a cushion material. It is a front view of a lid member and a part of frame member. It is a front view of the lid member and frame member part of another example. It is a perspective view of the cushion material (concave part) and lid member concerning Example 2. FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In FIG. 2, for the sake of convenience, some members (recesses, lid members) are shown with smaller dimensions. In each of the drawings, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B to the rear of the vehicle seat, a reference symbol UP to the upper side of the vehicle seat, and a reference symbol DW to the lower side of the vehicle seat.
The vehicle seat 2 of the present embodiment includes a seat cushion 4, a seat back 6, and a headrest 8 (see FIG. 1). These seat constituent members include skin materials (4S, 6S, 8S), cushion materials (4P, 6P, 8P), and frame members (4F, 6F, 8F).

<Example 1>
The headrest 8 is a member that can be attached to and detached from the upper portion of the seat back 6, and has a frame member 8F (see FIGS. 1 and 2). The frame member 8F is a substantially inverted U-shaped (front view) member, and has linear free ends (a pair of stay members 11 and 12).
In the present embodiment, the pair of stay members 11 and 12 protrude downward while the frame member 8F is disposed in the headrest 8. And the headrest 8 can be attached to the seat back 6 upper part by inserting each stay member 11 and 12 in the seat back 6 (each support member 21 and 22 mentioned later).

[Seatback]
The seat back 6 is a member that is connected to the seat cushion 4 so as to be able to rise and fall (see FIGS. 1 to 3).
The seat back 6 according to the present embodiment includes the above-described basic configuration (6S, 6P, 6F), a pair of support members 21 and 22, a lumbar support 50, a blast passage section 30 and a blast device 40 described later. A board member 9 can be disposed on the back surface of the seat back 6.
The frame member 6F (described later in detail) is a frame-shaped member that forms a seat skeleton, and includes a pair of support members 21 and 22 described later.
The cushion material 6P is a member that covers the frame member 6F and forms a seat outer shape, and has an air flow passage portion 30 (a hole portion 6H, a concave portion 32, and a lid member 34) described later.

In the present embodiment, as will be described later, after covering the recess 32 with the lid member 34, the cushion material 6P is covered from the upper side of the frame member 6F. And by making the air blower 40 communicate with the recess 32, the gas blown from the air blower 40 can be blown to the occupant through the hole 6H of the seat back 6. In this type of seat configuration, it is desirable that the cushion material 6P and the blower 40 can be disposed with good workability with respect to the frame member 6F.
Therefore, in this embodiment, the cushion material 6P and the blower 40 are arranged with good workability by the configuration described later. Hereinafter, each configuration will be described in detail.

(Basic configuration)
The skin material 6S is a bag-like member that covers the cushion material 6P, and can be composed of, for example, a fabric (woven fabric, knitted fabric, or nonwoven fabric) through which gas can pass. The cushion material 6P is a member that forms the outer shape of the seat, and can be formed of a member having elastic force such as polyurethane foam.
The cushion material 6P of the present embodiment has a plurality of holes 6H and a concave portion 32 (one configuration of the air flow passage portion 30) described later. The plurality of holes 6H are through-holes that penetrate the cushion material 6P in the thickness direction, and communicate with a later-described recess 32 and open to the seating side. In the present embodiment, holes 6H can be formed on each side of the seat back 6 (sitting surface).

The frame member 6F is a frame-shaped member (substantially inverted U shape in a front view) forming a skeleton. The frame member 6F of the present embodiment includes an upper frame 6a, a pair of side frames 6b, a lower frame 6c, a spring member 6d, and a bracket 6e (see FIG. 2).
The upper frame 6a is a hollow cylindrical member (substantially inverted U shape in a front view) that forms the upper part of the seat. Each of the pair of side frames 6b is a flat plate member that forms a side of the seat, and is attached to the lower end of the upper frame 6a. The lower frame 6c is a flat plate member that is bridged between the pair of side frames 6b in the lower part of the seat.

The spring member 6d is a linear member (substantially U-shaped) that can be bent and deformed. In the present embodiment, the upper portion (free end side) of the spring member 6d is attached to the upper frame 6a, and the lower portion of the spring member 6d (a connecting portion different from the free end) is attached to the lower frame 6c.
The bracket 6e is a flat plate member that is long in the sheet width direction. In the present embodiment, after the bracket 6e is attached to a predetermined position of the upper frame 6a in a bridging manner, a blower 40 described later can be attached to the central portion 16 (a slightly wider portion) of the bracket 6e.

(A pair of support members)
The pair of support members (the first support member 21 and the second support member 22) are cylindrical members (an example of a protruding portion) into which the stay members 11 and 12 can be inserted.
In the present embodiment, a pair of support members 21 and 22 are mounted in a protruding manner on the front side of the upper frame 6a (side facing the lid member) via the support brackets (21B and 22B) while being arranged in parallel in the seat direction. As will be described later, when the cushion member 6P is placed on the frame member 6F, the lower surface (end portion) of the lid member 34 may come into contact with the support members 21 and 22.

(Lumbar support)
The lumbar support 50 (another example of the protruding portion) is a member that supports an occupant's pelvis and waist (lumbar) to ensure an appropriate sitting posture.
The lumbar support 50 of this embodiment includes a support member 52 and a drive mechanism (not shown) that tilts the support member 52 back and forth. The support member 52 is a substantially rectangular (front view) flat plate member and has a dimension that can be disposed inside the lower portion of the seat back 6.
In this embodiment, for example, the support member 52 is attached to the lower frame 6c so as to be tiltable via a spring (not shown). At this time, the support member 52 protrudes and is attached to the front portion (side facing the lid member) of the lower frame 6c. And it is set as the structure which tilts the support member 52 back and forth by a drive mechanism (illustration omitted), and supports a passenger | crew's pelvis part and waist | hip | lumbar part.

[Blower]
The blower 40 of the present embodiment is a hollow box (short cylindrical shape), and has a blower mechanism 42, a space 44, a first opening 46, and a second opening 48 (see FIG. 2 and FIG. 2). (See FIG. 3).
The first opening 46 is a through hole formed on the front side of the blower 40 (in the axial direction of the device) and can supply gas to the blower mechanism 42. Moreover, the 2nd opening part 48 is a through-hole formed in the surrounding surface side (centrifuge direction of an apparatus) of the air blower 40, and can discharge the ventilation from the air blowing mechanism 42 outside the apparatus. And the space part 44 is an internal space (substantially rectangular shape in the longitudinal sectional view) of the blower 40 and can store a blower mechanism 42 described later.
The air blowing mechanism 42 is a small-diameter cylindrical member and can be accommodated in the space 44. Here, as the blower mechanism 42, for example, a centrifugal mechanism (a mechanism that blows air in the centrifugal direction while sucking air from the apparatus axial direction) can be used. Examples of this type of air blowing mechanism 42 include a multi-blade fan (sirocco fan), a plate fan, a turbo fan, an airfoil fan, and a limit load fan.

[Blower channel section]
The air flow path section 30 is a flow path that guides the air blown from the blower 40 to the hole 6H, and includes a recess 32, a lid member 34, and a pipe member 36 (see FIGS. 2 to 4).
The recessed part 32 can be provided in the seating side back surface (surface inside the seat) of the cushion material 6P. The recessed part 32 of a present Example is a substantially X-shaped (front view) recessed part, and has a some groove part (34a-34d) (refer FIG. 4). The pair of groove portions 32a and 32b are groove portions disposed below the sheet, and the pair of groove portions 32c and 32d are groove portions disposed above the sheet. The recess 32 communicates with the hole 6H near the apex of each groove.
Here, the pair of groove portions 32a and 32b arranged below the seat are arranged facing each other when viewed in the sheet width direction, and the clearance between both groove portions expands toward the bottom of the sheet (both groove portions are substantially C-shaped. To place). The inclination angle of the pair of grooves 32a and 32b is not particularly limited, but preferably has an inclination angle (θ) that follows an inclined surface described later (see FIG. 7).

(Cover member)
The lid member 34 is a member that can cover the recess 32, and has an insertion hole H (through hole) and a pair of inclined surfaces 34a and 34b (see FIGS. 3 and 4).
The lid member 34 of the present embodiment is a substantially rectangular planar member when viewed from the front, and has a dimension (slightly large) following the recess 32 and can be covered with the recess 32. The insertion hole H is a through hole provided in the approximate center of the lid member 34 and can communicate with the blower 40 via the tube member 36.
Here, the material of the lid member 34 is not particularly limited, and examples thereof include a flexible cloth material (nonwoven fabric such as felt, woven fabric, knitted fabric), leather (natural leather, artificial leather), and a resin plate.
In this embodiment, the cover member 34 (made of felt) is covered with the recess 32, one end of the tube member 36 is communicated with the insertion hole H, and the other end of the tube member 36 is connected to the blower 40. In the present embodiment, a concave portion (groove-shaped portion 35) that follows the shape of the concave portion 32 is formed on the surface of the lid member 34.

(Inclined surface)
The pair of inclined surfaces (first inclined surface 34a and second inclined surface 34b) can be formed on the lower surface (end portion) of the lid member 34 (see FIGS. 3, 4, and 7). Both the first inclined surface 34a and the second inclined surface 34b are inclined surfaces that are inclined in the sheet width direction.
The lid member 34 of the present embodiment is formed with a horizontal surface 33 extending substantially horizontally and a pair of inclined surfaces 34a and 34b on the lower surface thereof. Then, the pair of inclined surfaces 34 a and 34 b are arranged with the horizontal surface 33 interposed therebetween. At this time, by adjusting the length dimension L1 of the horizontal surface 33, the pair of inclined surfaces 34a, 34b can be arranged at positions where they can contact the corresponding support members (21, 22), respectively (FIG. 4). And see FIG.

Furthermore, the first inclined surface 34a and the second inclined surface 34b are arranged facing each other when viewed in the sheet width direction, and the clearance between both the inclined surfaces is enlarged toward the lower side of the sheet (both inclined surfaces are substantially C-shaped). Arranged in a shape).
The first inclined surface 34a is inclined downward from the one end of the horizontal surface 33, and can be contacted obliquely with respect to the first support member 21 (see the inclination angle θ in FIG. 7). The second inclined surface 34b is inclined downward from the other end of the horizontal surface 33, and can be contacted obliquely with respect to the second support member 22 (inclination angle θ not shown).
Here, the inclination angle θ described above can be set to be greater than 0 ° and less than 90 °.

(Cushion material covering work)
Referring to FIGS. 5 and 6, after covering recess 32 with lid member 34, cushion material 6 </ b> P is covered from above frame member 6 </ b> F.
At this time, in this embodiment, the pair of inclined surfaces 34a and 34b are arranged in a square shape on the lower surface side of the lid member 34 (see FIG. 7). In the middle of covering the frame member 6F with the cushion material 6P, the inclined surfaces 34a and 34b may come into contact with the pair of support members 21 and 22, respectively.
Then, an external force F (an external force applied to the lid member 34 in the direction of disengagement) is applied to the inclined surfaces 34a and 34b from the support members 21 and 22. At this time, the external force F is dispersed and reduced by the inclined surfaces 34a and 34b (reduced to Fcosθ).
Furthermore, since the reduced external force (Fcosθ) acts in a direction in which both the inclined surfaces 34a and 34b are expanded (a direction in which the lid member 34 is not bent and deformed), it is possible to suitably prevent the lid member 34 from falling off the recess 32. it can.

Similarly, the pair of support members 21 and 22 may come into contact with the groove-shaped portion 35 of the lid member 34 during the covering of the cushion material 6P.
At this time, the external force (F) of each support member is dispersed and reduced by bringing the groove-shaped portion 35 (having a shape corresponding to the pair of groove portions) into contact with the pair of support members 21 and 22 ( Reduced to Fcosθ).

Next, the cushion member 6P can be covered on the frame member 6F while the inclined surfaces 34a and 34b are brought into contact with the lumbar support 50, respectively. Also at this time, the external force from the lumbar support 50 (external force applied to the cover member 34 in the direction of disengagement) can be dispersed and reduced by the pair of inclined surfaces 34a and 34b.
And by making the air blower 40 communicate with the recess 32, the gas blown from the air blower 40 can be blown to the occupant through the hole 6H of the seat back 6. Finally, the headrest 8 can be mounted on the seat back 6 by inserting the stay members 11 and 12 into the support members 21 and 22.

As described above, in the present embodiment, the external force applied to the lid member 34 is applied by bringing the inclined surfaces 34a and 34b into contact with the stay members 11 and 12 (not at right angles) in the middle of covering the cushion material 6P. To reduce. Thus, by reducing the external force applied to the lid member 34 (external force applied in the direction of disengagement), the cushion material 6P and the blower 40 can be disposed with good workability with respect to the frame member 6F.
Further, in this embodiment, the cushion member 6P can be covered on the frame member 6F while the inclined surfaces 34a and 34b are brought into contact with the pair of support members 21 and 22, respectively (the seat structure is more workable. ).
In this embodiment, since the planar lid member 34 is used, the seat seating property is hardly adversely affected as compared with the conventional configuration (box-shaped lid member). In particular, by using a cover member 34 made of a cloth material such as felt, it is possible to ensure a suitable seating comfort as compared with a conventional configuration (a box-shaped cover member made of hard resin).

<Modification>
Since the vehicle seat according to the present modification has substantially the same basic configuration as the vehicle seat 2 according to the first embodiment, the common structure is denoted by the corresponding reference numerals, and detailed description thereof is omitted.
In this modification, a pair of inclined surfaces (first inclined surface 34 c and second inclined surface 34 d) are formed by notching both ends of the lower surface of the lid member 34. The clearance between the pair of inclined surfaces 34c and 34d decreases toward the lower side of the seat (both inclined surfaces are arranged in a substantially inverted C shape).
The cushion member 6P can be covered on the frame member 6F while the inclined surfaces 34c and 34d are brought into contact with the protruding portions (support member, lumbar support 50), respectively. Thereby, the external force F from each support member 21 and 22 can be disperse | distributed and reduced (the external force applied to the removal direction which acts on the cover member 34 can be made into Fcos (theta)).

<Example 2>
Since the vehicle seat of the present embodiment has substantially the same basic configuration as the vehicle seat 2 of the first embodiment, the common structure is denoted by the corresponding reference numerals and detailed description thereof is omitted.
The ventilation flow path part of a present Example has the 1st recessed part 31a, the 2nd recessed part 31b, the recessed part 32, and the cover member 34 (refer FIG. 9). The first concave portion 31a is a concave portion (somewhat large) provided on the back surface of the cushion material 6P. The second concave portion 31b is a concave portion (slightly small) provided in the first concave portion 31a. In the present embodiment, the concave portion 32 is formed in the second concave portion 31b.

And the cover member 34 has a dimension which can be fitted in the 2nd recessed part 31b. Furthermore, in the present embodiment, the protrusion of the lid member 34 (particularly the lower end side) from the second concave portion 31b can be prevented as much as possible by appropriately adjusting the depth dimension of the second concave portion 31b. The upper end side of the lid member 34 may be accommodated in the second concave portion 31b, or may slightly protrude from the second concave portion 31b.
According to the present embodiment, the possibility of the stay members 11, 12, etc. coming into contact with the lid member 34 is reduced as much as possible by covering the cushion material 6 </ b> P by fitting the lid member 34 into the second concave portion 31 b. can do.

The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In this embodiment, the lid member having a pair of inclined surfaces has been exemplified, but the configuration of the lid member is not intended to be limited. For example, a single inclined surface may be formed on the lid member, or three or more inclined surfaces may be formed. In addition, a pair of inclined surface can be formed in left-right symmetric form (C shape, reverse C shape), and can also be formed asymmetrically.
(2) In the present embodiment, the felt lid member is illustrated, but a resin lid member can be used. When a resin lid member is used, a tapered portion (a portion in which an edge facing the rear surface of the sheet is notched in an inclined manner when viewed in the longitudinal section) can be provided on the inclined surface.

(3) Moreover, in this embodiment, a pair of support member and the lumbar support were illustrated as a protrusion part. In addition to these, various members inside the sheet can serve as protrusions. In addition, the structure of a present Example can be used suitably for the vehicle seat which has at least one of a support member and a lumbar support, for example.
(4) Moreover, in this embodiment, the structure which covers a recessed part with a somewhat large lid member was demonstrated. Unlike this, a slightly small lid member can be fitted into the recess.
(5) Moreover, in this embodiment, the substantially H-shaped (front view) recessed part 32 was illustrated. The concave portion 32 can take various shapes such as a substantially rectangular shape, a rectangular shape, and a circular shape in a front view.
(6) In the present embodiment, the centrifugal blower mechanism is exemplified, but the configuration of the blower mechanism is not limited.
(7) In Example 2, the first concave portion can be omitted as appropriate.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 6P Cushion Material 6F Frame Member 6S Skin Material 6H Holes 11 and 12 Stay Member 21 First Support Member 22 Second Support Member 30 Blower Channel 32 Recesses 32a to 32d Groove 33 Horizontal surface 34a First inclined surface 34b Second inclined surface 34 Lid member 35 Groove portion 36 Tube member 40 Blower device 42 Blower mechanism 44 Space portion 46 First opening portion 48 Second opening portion 50 Lumber support 52 Support member

Claims (2)

A seat cushion, a seat back connected to the seat cushion so as to be able to stand upright, and an air blower disposed in the seat back, and gas blown from the air blower to the seat back It is possible to blow air to the occupant through the hole provided,
The seat back can cover the recess, a frame member that forms a seat skeleton, a cushion material that covers the frame member and forms a seat outer shape, a recess that is provided in the cushion material and communicates with the hole. A cover member, while covering the recess with the cover member, and communicating the blower to the recess,
A vehicle having a configuration in which the frame member has a protruding portion protruding to the side facing the lid member, and the protruding portion can contact the end portion of the lid member when the cushion member is covered on the frame member. In the sheet for
The vehicle seat which has the inclined surface where the edge part of the said cover member can contact | abut to the said protrusion part while inclining toward a seat width direction. The vehicle seat has a headrest that can be attached to the upper portion of the seatback, and the pair of stay members of the headrest are inserted into the pair of support members of the frame member, whereby the headrest is attached to the seatback. It is a configuration to install,
The frame member has the pair of support members as the protrusions in parallel in the seat width direction,
2. The vehicle according to claim 1, wherein end portions of the lid member have a pair of inclined surfaces, and the inclined surfaces can be brought into contact with the pair of support members in the middle of covering the cushion member on the frame member. Sheet.

Images