U.S. patent application number 16/615622 was filed with the patent office on 2020-03-12 for conveyance seat.
The applicant listed for this patent is TS TECH CO., LTD.. Invention is credited to Kenta KIKUCHI, Yohei URABE.
Application Number | 20200079258 16/615622 |
Document ID | / |
Family ID | 64396464 |
Filed Date | 2020-03-12 |
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United States Patent
Application |
20200079258 |
Kind Code |
A1 |
KIKUCHI; Kenta ; et
al. |
March 12, 2020 |
CONVEYANCE SEAT
Abstract
Provided is a conveyance seat in which a duct connected to a fan
can be compactly disposed, and the fan is provided in a
pan-frame-type seat cushion. The vehicle seat includes a seat
cushion (S2) and a blower (48) provided in the seat cushion (S2).
The seat cushion (S2) is provided with a plate-shaped pan frame
(42). The blower (48) is provided below the pan frame (42), a duct
(49) is connected to the blower (48), and an opening (42a) through
which the duct (49) extends is formed in the pan frame (42).
Inventors: |
KIKUCHI; Kenta; (Tochigi,
JP) ; URABE; Yohei; (Tochigi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TS TECH CO., LTD. |
Saitama |
|
JP |
|
|
Family ID: |
64396464 |
Appl. No.: |
16/615622 |
Filed: |
May 18, 2018 |
PCT Filed: |
May 18, 2018 |
PCT NO: |
PCT/JP2018/019279 |
371 Date: |
November 21, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47C 7/744 20130101;
B60H 1/00521 20130101; B60N 2/682 20130101; B60N 2/68 20130101;
B60N 2/686 20130101; B60N 2/5657 20130101; B60N 2/5642
20130101 |
International
Class: |
B60N 2/56 20060101
B60N002/56; A47C 7/74 20060101 A47C007/74; B60N 2/68 20060101
B60N002/68; B60H 1/00 20060101 B60H001/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 23, 2017 |
JP |
2017-101871 |
Claims
1. A conveyance seat, comprising: a seat cushion, and a fan
provided in the seat cushion, wherein the seat cushion is provided
with a plate-shaped pan frame, the fan is provided below the pan
frame, a duct is connected to the fan, and an opening through which
the duct extends is formed in the pan frame.
2. The conveyance seat according to claim 1, wherein the duct has a
bellows shape including a recess and a protrusion that are formed
continuously in one direction, and the recess of the bellows shape
is arranged so as to overlap the opening of the pan frame in the
one direction.
3. The conveyance seat according to claim 1, further comprising a
bracket for disposing the fan in the seat cushion; wherein the
bracket includes a main body portion formed at a position separated
from the pan frame with the bracket being attached to the pan
frame, and attachment portions attached to the pan frame, and the
fan is attached to the main body portion of the bracket.
4. The conveyance seat according to claim 3, wherein an opening
through which the duct extends is formed in the bracket.
5. The conveyance seat according to claim 3, wherein a harness is
connected to the fan, a clip is attached to the harness, and a
fixing portion for fixing the clip is provided in the bracket.
Description
TECHNICAL FIELD
[0001] The present invention relates to a conveyance seat, and
particularly to a conveyance seat including a blower.
BACKGROUND ART
[0002] Some seat cushions of conveyance seats including vehicle
seats, etc. include a plate-shaped pan frame.
[0003] For example, Patent Literature 1 describes an invention
relating to a pan frame provided in a seat cushion that constitutes
a vehicle seat, characterized in that a bead is formed on the pan
frame in order to increase strength.
CITATION LIST
Patent Literature
[0004] PATENT LITERATURE 1: JP 2001-145537 A
SUMMARY OF INVENTION
Technical Problem
[0005] In some vehicle seats for luxury vehicles, in order to
provide comfort to a seat occupant, a fan such as a blower for
sending air toward the seat occupant is provided in the interior
thereof.
[0006] However, in the seat cushion provided with the pan frame
described in Patent Literature 1, in order to blow air toward the
seat occupant, it is necessary to dispose a fan on the pan frame.
Therefore, in order to ensure the region for disposing the fan, it
was necessary to increase the height of seat cushion.
[0007] In addition, when the fan is disposed on the side of the
seat occupant with respect to the pan frame in this way, vibration
accompanying the operation of the fan is easily transmitted to the
seat occupant, and the vibration may provide discomfort to the seat
occupant.
[0008] Furthermore, it takes time to attach a harness for supplying
power to the fan to the seat cushion, resulting in a lot of time to
attach the fan and the harness.
[0009] The present invention has been made in view of the above
problems, and an object thereof is to provide a conveyance seat in
which a duct connected to a fan can be compactly arranged, and a
pan-frame-type seat cushion is provided with a fan.
[0010] Another object of the present invention is to prevent the
vibration of the fan from being transmitted to a seat occupant.
[0011] Another object of the present invention is to easily fix a
harness to a bracket.
Solution to Problem
[0012] According to a conveyance seat of the present invention, the
above problem is solved by a conveyance seat including a seat
cushion and a fan provided in the seat cushion, wherein the seat
cushion is provided with a plate-shaped pan frame, the fan is
provided below the pan frame, a duct is connected to the fan, and
an opening through which the duct extends is formed in the pan
frame.
[0013] In the above configuration, the opening through which the
duct extends is formed in the pan frame provided in the conveyance
seat. Therefore, it is possible to provide a conveyance seat in
which the duct connected to the fan can be compactly arranged, and
a pan-frame-type seat cushion is provided with the fan.
[0014] Preferably, the duct has a bellows shape including a recess
and a protrusion that are formed continuously in one direction, and
the recess of the bellows shape is arranged so as to overlap the
opening of the pan frame in the one direction.
[0015] According to the above configuration, since the recess of
the duct having a bellows shape is arranged so as to overlap the
opening of the pan frame, it is possible to prevent the duct from
coming off the pan frame.
[0016] Preferably, a bracket for disposing the fan in the seat
cushion is further provided, the bracket includes a main body
portion formed at a position separated from the pan frame with the
bracket being attached to the pan frame, and attachment portions
attached to the pan frame, and the fan is attached to the main body
portion of the bracket.
[0017] According to the above configuration, since the fan is
attached to the main body portion of the bracket and is attached to
the pan frame via the bracket, it is possible to prevent the
vibration of the fan from being transmitted to the seat
occupant.
[0018] Preferably, an opening through which the duct extends is
formed in the bracket.
[0019] According to the above configuration, since the opening
through which the duct extends is formed in the bracket, it is
possible to prevent the arrangement of the duct from being
restricted by the bracket.
[0020] Preferably, a harness is connected to the fan, a clip is
attached to the harness, and a fixing portion for fixing the clip
is provided in the bracket.
[0021] According to the above configuration, since the fixing
portion for fixing the clip of the harness is provided in the
bracket, it is possible to easily and stably fix the harness to the
bracket.
Advantageous Effects of Invention
[0022] According to this invention, it is possible to provide a
conveyance seat in which the duct connected to the fan can be
compactly arranged, and a pan-frame-type seat cushion is provided
with a fan.
[0023] Furthermore, according to the present invention, it is
possible to prevent the duct from coming off the pan frame.
[0024] Furthermore, according to the present invention, it is
possible to prevent the vibration of the fan from being transmitted
to the seat occupant.
[0025] Furthermore, according to the present invention, it is
possible to prevent the arrangement of the duct from being
restricted by the bracket.
[0026] Furthermore, according to the present invention, it is
possible to easily and stably fix the harness to the bracket.
BRIEF DESCRIPTION OF DRAWINGS
[0027] FIG. 1 is a perspective view of a vehicle seat according to
this embodiment.
[0028] FIG. 2A is a perspective view showing a frame constituting a
framework of a vehicle seat.
[0029] FIG. 2B is a perspective view showing a frame constituting a
framework of a seat cushion.
[0030] FIG. 3 is a sectional view showing the arrangement of a
blower, a bracket, and a duct in the seat cushion, showing a cross
section taken along the line III-III of FIG. 1.
[0031] FIG. 4 is a perspective view showing a state in which the
blower and the duct are attached to the bracket.
[0032] FIG. 5 is a perspective view showing a state in which the
duct is attached to the bracket.
[0033] FIG. 6 is a perspective view showing the bracket.
[0034] FIG. 7 is a top view showing a state in which a harness is
attached to the blower and the bracket.
[0035] FIG. 8 is a perspective view showing a seat cushion frame of
the vehicle seat according to a first modification.
[0036] FIG. 9 is a top view showing the seat cushion frame of the
vehicle seat according to the first modification.
[0037] FIG. 10 is a top view showing a seat cushion frame of the
vehicle seat according to a second modification.
[0038] FIG. 11 is a top view showing a seat cushion frame of the
vehicle seat according to a third modification.
[0039] FIG. 12 is a front view showing a seat back frame of the
vehicle seat according to a fourth modification.
DESCRIPTION OF EMBODIMENTS
[0040] Hereinafter, a vehicle seat S according to an embodiment of
the present invention (this embodiment) will be described with
reference to the drawings. The embodiments described below are
given for mere illustration to facilitate understanding of the
present invention, and are not intended to limit the present
invention. That is, it should be understood that the shapes,
dimensions, arrangements, and others of the members described below
can be changed and improved without departing from the spirit of
the present invention, and equivalents thereof are included in the
present invention.
[0041] Hereinafter, the vehicle seat S will be described as an
example, but the vehicle seat S is mere illustration to facilitate
understanding of the present invention, and is not intended to
limit the present invention. That is, a seat provided with a blower
48 according to the present invention can be applied to a
conveyance other than a vehicle, for example, a ship, an aircraft,
a machine with a seat, or the like.
[0042] In the following description, a front to back direction, a
right to left direction, and an up to down direction correspond to
respective directions viewed from a seat occupant in the vehicle
seat S.
<Overall Configuration>
[0043] First, the overall configuration of the vehicle seat S
according to this embodiment, which is a conveyance seat according
to the present invention, will be generally described with
reference to mainly FIG. 1. FIG. 1 is a perspective view of the
vehicle seat S according to this embodiment.
[0044] The vehicle seat S mainly includes a seat back S1 and a seat
cushion S2 connected to the seat back S1. In addition, the vehicle
seat S is configured such that cushion materials S1z and S2z are
placed on the frame F constituting a framework portion and then are
covered by covers S1x and S2x.
[0045] The seat back S1 includes a seat back frame 1 constituting a
framework portion as described later.
[0046] The seat cushion S2 forms a seat portion that supports the
buttocks of the seat occupant and includes a seat cushion frame 2
constituting the framework portion. The cover S2x of the seat
cushion S2 has four right vent holes and four left vent holes S2y.
A blower 48 described later is disposed in the interior of the seat
cushion S2, and the air generated from the blower 48 is sent to or
near the thigh of the seat occupant through the vent holes S2y.
<Frame>
[0047] Next, a frame F constituting a framework of the vehicle seat
S will be described with reference to FIGS. 2A and 2B. FIG. 2A is a
perspective view of the frame F, and FIG. 2B is a perspective view
showing a portion of the frame F, the portion constituting the seat
cushion S2.
[0048] The frame F mainly includes the seat back frame 1 and the
seat cushion frame 2 as shown in FIG. 2A.
[0049] As shown in FIG. 2A, the seat cushion frame 2 is attached on
slide rails 3 fixed to a vehicle body floor, and can be moved back
and forth by the slide rails 3.
[0050] Additionally, as shown in FIG. 2B, the seat cushion frame 2
includes a back side connecting portion 40 disposed backward of the
center, a front side connecting portion 41 disposed forward of the
center, and a pan frame 42 disposed on the center side in the seat
width direction.
[0051] The back side connecting portion 40 is linearly formed and
extends in the right to left direction at the back end portion of
the seat cushion frame 2.
[0052] The front side connecting portion 41 is linearly formed and
extends in the right to left direction at the front end portion of
the seat cushion frame 2.
[0053] The pan frame 42 is formed into a plate shape, and is joined
to the back side connecting portion 40 and the front side
connecting portion 41 by welding with the pan frame 42 extending
therebetween in a substantially horizontal direction. The pan frame
42 has an opening 42a through which an end portion of a duct 49, as
described later, on the outlet side extends.
<Blower and Members Around Blower>
[0054] Next, the blower 48 and the members around the blower 48
will be described with reference to FIGS. 3 to 7 in addition to
FIGS. 1, 2A and 2B. FIG. 3 is a sectional view showing the
arrangement of the blower 48, a bracket 50 and the duct 49 in the
seat cushion S2, showing a cross section taken along the line
III-III of FIG. 1. FIG. 4 is a perspective view showing a state in
which the blower 48 and the duct 49 are attached to bracket 50.
FIG. 5 is a perspective view showing a state in which the duct 49
is attached to the bracket 50. FIG. 6 is a perspective view showing
the bracket 50, and FIG. 7 is a top view showing a state in which
the harness 51 is attached to the blower 48 and the bracket 50.
(Blower)
[0055] In the interior of the seat cushion S2, the blower 48 is
provided as a fan for generating air toward the buttocks of the
seat occupant. The blower 48 corresponds to a fan according to the
present invention, and is provided below the pan frame 42.
[0056] As shown in FIG. 4, the blower 48 mainly includes a blower
main body 48a provided at the center, an inlet portion 48aa
protruding backward from the center, and an outlet portion (not
shown) provided on the lower side at the center.
[0057] Three protruding pieces 48b protruding radially outward from
the blower main body 48a are formed on the circumferential surface
of the blower main body 48a at a predetermined distance. The blower
48 is disposed on the bracket 50 such that the protruding pieces
48b are placed on attachment protrusions 50h of the bracket 50 as
described later. Self-tapping screws 53 extend through through
holes (not shown) extending in the up to down direction of the
protruding pieces 48b, and the self-tapping screws 53 are screwed
into the attachment protrusions 50h, whereby the blower 48 and the
bracket 50 are fixed to each other.
[0058] Furthermore, the duct 49 as described later is connected to
an outlet (not shown) located on the lower side of the blower 48,
and is formed such that the air generated from the blower 48 flows
to the thigh of the seat occupant through the duct 49, the cushion
material S2z, and the vent holes S2y.
(Bracket)
[0059] In the seat cushion S2, the bracket 50 for disposing the
blower 48 is attached to the pan frame 42.
[0060] As shown in FIG. 6, the bracket 50 mainly includes a flat,
plate-shaped main body portion 50a formed at a position separated
downward from the pan frame 42, attachment legs 50b and 50c serving
as attachment portions attached to the pan frame 42, and a fixing
leg 50e for fixing the harness 51.
[0061] In the center portion of the main body portion 50a, an
opening 50g extending therethrough in the thickness direction,
through which the duct 49 described later extends, is formed. Thus,
since the duct 49 is disposed to extend through the opening 50g of
the bracket 50, the arrangement of the duct 49 is not restricted by
the bracket 50.
[0062] Furthermore, three attachment protrusions 50h protruding
upward are formed on the side of the upper surface of the main body
portion 50a. The attachment protrusions 50h are those for
supporting the blower 48 with a part of the protrusions extending
through attachment holes (not shown) formed in the blower 48, and
for receiving the self-tapping screws 53 to screw the blower 48 and
the bracket 50 together. The attachment protrusions 50h have a
cylindrical shape with ribs formed on the circumferential surface
thereof.
[0063] In this way, the blower 48 is not directly fixed to the pan
frame 42 and is attached to the attachment protrusions 50h provided
on the main body portion 50a of the bracket 50 by the self-tapping
screws 53. That is, since the blower 48 is attached to the pan
frame 42 via the bracket 50, it is possible to prevent the
vibration generated by the drive of the blower 48 from being
transmitted to the seat occupant.
[0064] The attachment legs 50b and 50c are portions of the bracket
50 that are attached to the pan frame 42, and extend upward
continuously from the outer edge of the main body portion 50a.
[0065] The fixing leg 50e has a fixing hole 50f extending
therethrough in the up to down direction as shown in FIG. 7. The
fixing hole 50f functions as a fixing portion that fixes the
harness 51 connected to the blower 48. Specifically, a clip 51a is
attached to the harness 51, and the clip 51a is inserted into the
fixing hole 50f, whereby the harness 51 is fixedly supported by the
fixing leg 50e. Thus, the fixing hole 50f for fixing the clip 51a
of the harness 51 is provided in the bracket 50, whereby the
harness 51 is easily and stably fixed to the bracket 50.
(Duct)
[0066] The duct 49 has a function of guiding the air generated by
the blower 48 upward of the pan frame 42 and is a cylindrical
member formed in a substantially J shape.
[0067] The duct 49 includes a flange 49c provided at an end portion
on the side of an air inlet and a bellows portion 49a provided at
an end portion on the side of an air outlet.
[0068] The flange 49c is a portion interposed between a outlet port
on the lower side of the blower 48 and the upper surface of the
main body portion 50a of the bracket 50. As can be seen from FIGS.
5 and 6, the flange 49c is fixed to the bracket 50 by a
self-tapping screw (not shown) with the flange being in contact
with a periphery defining the opening 50g of the bracket 50.
[0069] The bellows portion 49a has a bellows shape that includes a
protrusion 49aa formed to have substantially the same thickness and
protruding outward, and a recess 49ab formed continuously from the
protrusion 49aa in a direction perpendicular to the pan frame 42
and recessed inward.
[0070] A portion of the bellows portion 49a on the inner surface
side where the protrusion 49aa is formed on the outer surface side,
that is, a portion of the bellows portion 49a recessed on the inner
surface side, is engaged with an annular lower end portion of the
connecting member 52 that has a shape widening toward the end.
[0071] Furthermore, the duct 49 is disposed so that the recess 49ab
overlaps with the opening 42a of the pan frame 42 in the thickness
direction of the pan frame 42. Since the duct 49 is disposed in
this manner, the periphery defining the opening 42a enters the
recess 49ab of the duct 49, and the duct 49 can be prevented from
coming off the pan frame 42.
[0072] The connecting member 52 is a member that connects the
cushion material S2z and the duct 49, and has a function of
communicating holes connected to the vent holes S2y and formed in
the cushion material S2z and an end portion on the outlet side of
the duct 49. As described above, the opening 42a is formed in the
pan frame 42, and the connecting member 52 attached to the end
portion on the outlet side of the duct 49 is arranged so as to
protrude upward through the opening 42a.
[0073] In this way, since the opening 42a is formed in the pan
frame 42, the air generated from the bracket 50 can be sent upward
of the pan frame 42 through the duct 49, and the duct 49 can be
compactly arranged without being inhibited by the pan frame 42.
Furthermore, the blower 48 can be compactly attached in the seat
cushion S2 provided with the pan frame 42.
[0074] The pan frame 42 according to the embodiment is described as
being disposed to extend between the front and back sides of the
seat cushion frame 2 without covering the entire seat cushion frame
2, and, as shown in FIG. 2B, there is a space extending through in
the up to down direction in a portion on the right and left sides
of the pan frame 42. However, the present invention is not limited
to such a configuration, and the pan frame may be disposed to
extend between the right and left sides of the seat cushion frame,
and be formed across the entire horizontal area of the seat cushion
frame.
<Seat Cushion Frame According to Modifications>
[0075] In the above embodiment, the seat cushion frame 2 fixed to
the vehicle body floor via the slide rail 3 is described as an
example. However, the present invention is not limited to this, and
a seat cushion frame fixed to the vehicle body floor by a mechanism
different from the slide rail 3 may be also possible. Specifically,
a seat cushion frame 102 shown in FIGS. 8 and 9 may be applied.
FIG. 8 is a perspective view showing the seat cushion frame 102
according to the modification, and FIG. 9 is a view showing the
seat cushion frame 102 according to the modification as viewed from
below.
(First Modification)
[0076] Hereinafter, the configuration of the seat cushion frame 102
of the vehicle seat S according to a first modification will be
described with reference to FIGS. 8 and 9.
[0077] As shown in FIGS. 8 and 9, the seat cushion frame 102
according to the first modification includes a back side connecting
portion 140 disposed backward of the center, a front side
connecting portion 141 disposed forward of the center, a pan frame
142 extending between the back side connecting portion 140 and the
front side connecting portion 141. As shown in FIG. 9, the back end
portion of the pan frame 142 attached to the back side connecting
portion 140 is located below the level of the front end portion of
the pan frame 142 attached to the front side connecting portion
141.
[0078] Furthermore, as shown in FIGS. 8 and 9, a foot portion 143
formed by bending a pipe material into a substantially U shape is
provided between opposite side portions of the seat cushion frame
102. The foot portion 143 is rotatably supported by the opposite
side portions of the seat cushion frame 102. The foot portion 143
rotates between a close position close to the vehicle body floor
and a separated position separated from the vehicle body floor.
[0079] When the foot portion 143 is in the close position, the
lower end of the foot portion 143 is locked to a locking mechanism
(not shown) attached to the vehicle body floor, so that the seat
cushion frame 102 is fixed to the vehicle body. When the lock by
the lock mechanism is released, the foot portion 143 rotates from
the close position to the separated position, so that the seat
cushion frame 102 can be movable relative to the vehicle body
floor.
[0080] The pan frame 142 has an opening 142a through which the end
of the duct 49 on the outlet side extends. First reinforcing
portions 144 extending in the front to back direction are formed on
the right and left sides of the opening 142a. The first reinforcing
portions 144 are, for example, beads formed on the pan frame
142.
[0081] Thus, since the first reinforcing portions 144 are provided
on opposite sides of the opening 142a, it is possible to prevent a
decrease in rigidity of an area around the opening 142a.
[0082] Furthermore, since the first reinforcing portions 144 are
provided, it is possible to enlarge the opening 142a, thereby
ensuring a sufficient amount of air from the blower 48.
[0083] Although not specifically shown in FIGS. 8 and 9, the blower
48 is also installed below the pan frame 142 in the seat cushion
frame 102 according to the first modification. The duct 49
extending from the blower 48, and the connecting member 52
connected to the duct 49 extend upward of the pan frame 142 through
the opening 142a. Thus, the air generated from the blower 48 and
sent through the duct 49 is exhausted from the vent holes Sty of
the seat cushion S2 through the opening 142a of the pan frame
142.
[0084] The above example in which the air is sent from the vent
holes S2y of the seat cushion S2 is described. However, the air may
be sucked from the vent holes Sty of the seat cushion S2 toward the
blower 48.
(Second Modification)
[0085] Next, the configuration of the seat cushion frame 102 of the
vehicle seat S according to a second modification will be described
with reference to FIG. 10.
[0086] In FIG. 10, the seat cushion frame 102 according to the
second modification is different from the seat cushion frame 102
according to the first modification in that the pan frame 142 is
further provided with second reinforcing portions 145. Hereinafter,
differences from the first modification will be described.
[0087] As shown in FIG. 10, in the pan frame 142 according to the
second modification, the first reinforcing portions 144 extending
in the front to back direction and the second reinforcing portions
145 extending in the right to left direction are formed around the
opening 142a through which the duct 49 extending from the blower 48
and the connecting member 52 extend.
[0088] The second reinforcing portions 145 may be beads formed on
the pan frame 142 or may be wire members or plate members attached
to the pan frame 142.
[0089] In the case where the second reinforcing portions 145 are
formed from metal wire members, when the pan frame 142 is made of
metal, the first reinforcing portion 144 may be formed, for
example, by welding metal wire members or plate members to the pan
frame 142. In addition, when the pan frame 142 is made of resin,
the first reinforcing portion 144 may be formed, for example, by
embedding metal wire members or plate members in the pan frame
142.
[0090] In this way, since the opening 142a, through which the
connecting member 52 extends, is surrounded by the first
reinforcing portions 144 and the second reinforcing portions 145,
it is possible to further prevent a decrease in rigidity of an area
around the opening 142a.
[0091] Moreover, since the first reinforcing portion 144 and the
second reinforcing portion 145 are provided, it is possible to
enlarge the opening 142a, thereby ensuring a sufficient amount of
air from the blower 48.
[0092] The duct 49 extending from the blower 48 is provided so as
to extend along the second reinforcing portion 145 in the right to
left direction above the pan frame 142. This enables the
interference between the duct 49 and the second reinforcing
portions 145 to be prevented and thus facilitates the attachment of
the duct 49.
(Third Modification)
[0093] Next, the configuration of the seat cushion frame 102 of the
vehicle seat S according to a third modification will be described
with reference to FIG. 11.
[0094] The seat cushion frame 102 according to the third
modification is different from the seat cushion frame 102 according
to the first modification in the configuration of the pan frame
142. Hereinafter, the differences will be described.
[0095] As shown in FIG. 11, the only one opening 142a is formed in
the pan frame 142 according to the third modification. The duct 49
extending from the blower 48, and the connecting member 52
connected to the duct 49 extend through the opening 142a.
[0096] Third reinforcing portions 146 are formed on the right and
left sides of the opening 142a. The third reinforcing portions 146
each include a first straight portion 146a, a curved portion 146b,
and a second straight portion 146c.
[0097] The third reinforcing portions 146 may be formed as beads,
or may be formed from wire members or plate members.
[0098] The first straight portion 146a is a straight reinforcing
portion formed forward of the opening 142a. The first straight
portion 146a extends in the front to back direction and is formed
so as to at least partially overlap the opening 142a in the seat
width direction.
[0099] The curved portion 146b is a reinforcing portion connected
to the back end of the first straight portion 146a and curved along
the opening 142a.
[0100] The second straight portion 146c is a linear reinforcing
portion connected to the back end of the curved portion 146b and
formed backward of the opening 142a. The second straight portion
146c extends in the front-back direction and is formed so as to at
least partially overlap the opening 142a in the seat width
direction.
[0101] In the seat cushion frame 102 according to the third
modification, the third reinforcing portions 146 can be formed
close to the opening 142a. This enables the prevention of a
decrease in rigidity of an area around the opening 142a.
[0102] Moreover, since the third reinforcing portions 146 are
provided, it is possible to enlarge the opening 142a, thereby
ensuring a sufficient amount of air from the blower 48.
(Fourth Modification)
[0103] Next, the configuration of the seat back frame 1 of the
vehicle seat S according to a fourth modification will be described
with reference to FIG. 12.
[0104] As shown in FIG. 12, in the seat back frame 1 according to
the fourth modification, a pan frame 242 is attached to the seat
back frame 1, and the duct 49 extending from the blower 48, and the
connecting member 52 connected to the duct 49 extend forward of the
pan frame 242 through an opening 242a formed in the pan frame
242.
[0105] Specifically, the seat back frame 1 includes an upper frame
1A and side frames 1B attached to right and left ends of the upper
frame 1A.
[0106] The pan frame 242 is attached to the upper frame 1A so as to
extend between right and left sides of the upper frame 1A. For
example, the pan frame 242 may be attached to the upper frame 1A by
welding, or may be attached by mechanical joint such as a bolt.
[0107] In the pan frame 242, a plurality of opening 242a is formed.
The openings 242a are formed to be aligned in the right to left
direction at the center of the pan frame 242 in the up to down
direction.
[0108] Fourth reinforcing portions 244 extending in the right to
left direction are formed above and below the openings 242a. For
example, the fourth reinforcing portions 244 may be formed as
beads, or may be formed from wire members or plate members.
[0109] Through the opening 242a, the duct 49 extending from the
blower 48, and the connecting member 52 connected to the duct 49
extend forward of the pan frame 242. This connecting member 52 is
connected to the cushion material S1z of the seat back S1.
[0110] Thus, the air generated from the blower 48 and sent through
the duct 49 is exhausted from the vent holes S1y of the seat back
S1 through the opening 242a of the pan frame 242.
[0111] The above example in which the air is sent from the vent
holes S1y of the seat back S1 is described. However, the air may be
sucked from the vent holes S1y of the seat back S1 toward the
blower 48.
[0112] In this way, since the pan frame 242 is attached to the seat
back frame 1 in accordance with the position of the vent holes Sly
formed in the seat back S1, the duct 49 extending from the blower
48 can be easily arranged.
[0113] Further, since the fourth reinforcing portions 244 are
formed around the opening 242a through which the connecting member
52 extends, it is possible to prevent a decrease in rigidity of an
area around the opening 242a.
[0114] Since the fourth reinforcing portions 244 are provided in
this way, it is possible to enlarge the opening 242a, thereby
ensuring a sufficient amount of air from the blower 48.
REFERENCE SIGNS LIST
[0115] S: vehicle seat (conveyance seat) [0116] S1: seat back
[0117] S1x: cover [0118] S1y: vent hole [0119] S1z: cushion
material [0120] S2: seat cushion [0121] S2x: cover [0122] S2y: vent
hole [0123] S2z: cushion material
[0124] F: seat frame
[0125] 1: seat back frame [0126] 1A: upper frame [0127] 1B: side
frame
[0128] 2: seat cushion frame
[0129] 3: slide rail
[0130] 40: back side connecting portion
[0131] 41: front side connecting portion
[0132] 42: pan frame [0133] 42a: opening
[0134] 48: blower (fan) [0135] 48a: blower body [0136] 48aa: inlet
portion [0137] 48b: protruding piece
[0138] 49: duct [0139] 49a: bellows portion [0140] 49aa: protrusion
[0141] 49ab: recess [0142] 49c: flange
[0143] 50: bracket [0144] 50a: main body portion [0145] 50b, 50c:
attachment leg (attachment portion) [0146] 50d: fixing hole [0147]
50e: fixing leg [0148] 50f: fixing hole (fixing portion) [0149]
50g: opening [0150] 50h: attachment protrusion
[0151] 51: harness [0152] 51a: clip
[0153] 52: connecting member
[0154] 53: self-tapping screw
[0155] 102: seat cushion frame
[0156] 140: back side connecting portion
[0157] 141: front side connecting portion
[0158] 142: pan frame [0159] 142a: opening
[0160] 143: foot portion
[0161] 144: first reinforcing portion
[0162] 145: second reinforcing portion
[0163] 146: third reinforcing portion [0164] 146a: first straight
portion [0165] 146b: curved portion [0166] 146c: second straight
portion
[0167] 150: bracket
[0168] 242: pan frame [0169] 242a: opening
[0170] 244: fourth reinforcing portion
* * * * *