JP6542737B2 - Sheet - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a seat including a seat pad having an air passage, a blower, and a duct connecting the blower and the air passage.

  Conventionally, a seat pad having an air passage, an air blower, and a duct for connecting the air blower to the air passage are provided, and air from the air blower is ejected from the surface of the seat cushion or seat back through the duct and the air passage. There is known a vehicle seat configured in (Patent Document 1). In this technique, the duct is connected to the seat pad by inserting the end of the duct into the inside of a tubular insert embedded in the seat pad.

JP 2005-287532 A

  By the way, in the conventional configuration, there is a possibility that the duct may come off from the connecting member for connecting the duct and the seat pad such as the insert member.

Then, an object of this invention is to provide the sheet | seat which can suppress that a duct comes off from a connection member.
Another object of the present invention is to make the connecting member compact.
Another object of the present invention is to make the duct simple.
Another object of the present invention is to suppress damage to a duct.
Another object of the present invention is to suppress air leakage.
Another object of the present invention is to suppress deformation of the connecting member.
Another object of the present invention is to secure a good air passage.
Another object of the present invention is to easily attach the connecting member.

  In order to achieve the above object, the sheet of the present invention is a sheet provided with a sheet pad having an air passage, an air blower, and a duct connecting the air blower and the air passage, at least one of them. An end portion is disposed in the vent passage, and the other end portion is provided with a tubular connecting member connected to the duct, the connecting member being hooked to the inner surface of the vent passage at the one end portion. It has a hook part and it has a second hook part hooked in the duct at the other end.

  According to such a configuration, since the connecting member has the second hooking portion that is hooked on the duct, it is possible to suppress the duct from coming off the connecting member due to the hooking of the connecting member and the duct.

  In the sheet described above, the connection member may be configured such that the other end is inserted into the inside of the duct, and the second hooking portion is hooked on the inner surface of the duct.

  According to this, compared with the structure by which a duct is inserted inside a cylindrical connection member, a connection member can be made compact.

  In the above-described sheet, the inner surface of the duct may be formed with a concave portion on which the second hooking portion is hooked.

  According to this, it is possible to suppress the duct from coming off the connection member with a simple configuration.

  In the sheet described above, the duct may have an expandable bellows part, and the recess may be formed in the bellows part.

  According to this, since the swinging, the vibration and the like can be absorbed by the expandable bellows, it is possible to further suppress the duct from coming off the connection member.

  In the sheet described above, the recess may be a valley portion of the bellows in the inner surface of the duct.

  According to this, compared with the structure which provides the recessed part which a 2nd hook part catches separately from a valley part in the inner peripheral surface of a bellows part, a duct can be made into a simple structure.

  In the sheet described above, the second hooking portion may include a first flange that protrudes from an outer peripheral surface of the connection member and extends along a wall forming the valley.

  According to this, since the edge of the first flange is prevented from scratching the wall forming the valley, damage to the duct can be suppressed. Further, since the first flange and the inner surface of the duct can be in contact over the entire circumference of the first flange, the adhesion between the connecting member and the duct can be increased, and air leakage can be suppressed.

  In the sheet described above, the duct may have a configuration in which a peak portion formed on the back side of the valley portion of the bellows portion is disposed in the air passage and in contact with the inner surface of the air passage. it can.

  According to this, since the movement of the duct can be restricted by the seat pad, it is possible to further suppress the duct from coming off the connection member.

  In the above-described sheet, the connecting member may be configured to have a reinforcing portion provided so as to crosslink by connecting a plurality of places on the inner surface.

  According to this, it is possible to suppress deformation of the cylindrical connection member so as to collapse. Further, since the deformation of the connecting member can be suppressed, it is possible to further suppress the duct from coming off the connecting member, and the passage of air can be favorably secured.

  In the sheet described above, the connecting member has a longitudinal cross-sectional shape cut along a plane orthogonal to the axial direction of the cylinder, and the reinforcing portion is provided at a central portion in the longitudinal direction of the cross-sectional shape. can do.

  According to this, the tubular connecting member can be further suppressed from being deformed to be crushed, and the duct can be further prevented from coming off from the connecting member, and the passage of air can be better secured. can do.

  In the sheet described above, the first hooking portion includes a second flange protruding from the outer peripheral surface of the connecting member, and a step-shaped portion in which the second flange is hooked is formed on the inner surface of the air passage. It can be done.

  According to this, the connecting member can be easily attached to the seat pad simply by inserting the connecting member into the air passage and hooking the second flange on the stepped portion. In addition, since the second flange and the inner surface of the air passage can be in contact over the entire circumference of the second flange, the adhesion between the connecting member and the seat pad is increased, and air leakage can be suppressed.

  According to the present invention, it is possible to suppress the duct from coming off the connection member.

  Further, according to the present invention, the connecting member can be made compact by inserting the connecting member into the inside of the duct.

  Further, according to the present invention, by forming the recessed portion in which the second hooking portion is hooked on the inner surface of the duct, it is possible to suppress the duct from coming off the connecting member with a simple configuration.

  Further, according to the present invention, by forming the recess in the bellows portion of the duct, it is possible to further suppress the duct from coming off the connection member.

  Further, according to the present invention, the duct can be configured simply by configuring the recess to be the valley portion of the bellows in the inner surface of the duct.

  Further, according to the present invention, since the second hook portion includes the first flange, damage to the duct can be suppressed, and air leakage can be suppressed.

  Further, according to the present invention, the configuration in which the mountain portion formed on the back side of the valley portion of the bellows portion contacts the inner surface of the air passage can further suppress the duct from coming off the connection member.

  Further, according to the present invention, the connecting member having the reinforcing portion can suppress deformation of the connecting member. Further, it is possible to further suppress the duct from coming off the connection member, and it is possible to secure a good air passage.

  Further, according to the present invention, by providing the reinforcing portion at the central portion in the longitudinal direction of the cross-sectional shape of the connecting member, it is possible to further suppress deformation of the connecting member. In addition, it is possible to further suppress the duct from coming off the connection member, and it is possible to better secure the air passage.

  Further, according to the present invention, the connecting member can be easily attached by forming the step-like portion in which the first hooking portion includes the second flange and the second flange is hooked on the inner surface of the air passage. It is possible to suppress the leak.

It is a perspective view of a vehicular seat as a seat concerning an embodiment. It is a sectional view of a seat cushion. It is a perspective view of a pan frame, a bracket, and a blower. They are a perspective view (a) of a bracket, and a figure (b) which looked at a bracket from the bottom. The figure (a) which shows the attachment position of the bracket to the pan frame of the vehicle seat used by the driver's seat, the figure (b) which shows the position of the axial part of the tapping screw in the 2nd attachment hole, The 3rd attachment hole It is a figure (c) which shows the position of the axial part of the tapping screw in. It is explanatory drawing (a), (b) of the fixing method of a pan | frame and a bracket. It is a perspective view of a duct and a connection member. It is an expanded sectional view of the seat cushion pad seen from the front, a duct, and a connection member. The figure (a) which shows the attachment position of the bracket to the pan frame of the vehicle seat used by the front passenger seat, the figure (b) which shows the position of the axial part of the tapping screw in the 2nd attachment hole, The 3rd attachment hole It is a figure (c) which shows the position of the axial part of the tapping screw in.

Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. In the present specification, front and rear, right and left, upper and lower are based on front and rear, left and right, upper and lower viewed from the person sitting on the seat.
As shown in FIG. 1, the seat of the present embodiment is configured as a vehicle seat S mounted on an automobile, and includes a seat cushion S1, a seat back S2, and a headrest S3.

  As shown in FIG. 2, the seat cushion S1 includes a seat cushion frame 10 constituting a framework of the seat cushion S1, a seat cushion pad 20 as a seat pad, and a skin material 30, and the seat cushion frame 10 The seat cushion pad 20 and the skin material 30 are covered.

  The seat cushion pad 20 has an air passage 21. The air passage 21 includes a first air passage 21A, a second air passage 21B, and a plurality of third air passages 21C. The first air passage 21A extends downward from the second air passage 21B (opposite to the side of the occupant sitting on the vehicle seat S), and the space below the second air passage 21B and the seat cushion pad 20 Are provided to communicate with each other. Further, the third air passage 21C extends from the second air passage 21B toward the upper side (passenger side) to communicate the second air passage 21B with the upper space of the seat cushion pad 20. .

  The vehicle seat S further includes a blower 40 and a duct 50. As shown by the arrows in FIG. 2, the air blown from the blower 40 passes through the duct 50 and the air passage 21 to form a seat. The cushion pad 20 is configured to be blown toward the occupant from the upper surface thereof. The surface material 30 may be formed of a material having air permeability, or a hole for passing air may be formed at a position corresponding to the third air passage 21C. .

  The seat cushion frame 10 is configured to include left and right side frames (not shown) disposed apart from each other on the left and right, and a pan frame 12 connecting the left and right side frames. The pan frame 12 is a plate-like frame formed by processing a metal plate, and is disposed at the front of the seat cushion S1.

  As shown to FIG. 2 and FIG. 3, the air blower 40 is a sirocco fan as an example, and is provided with the housing | casing 41, the impeller 42, and the motor not shown for rotating the impeller 42. As shown in FIG. The casing 41 has a casing main body 44 in which the impeller 42 and the motor are accommodated, a cylindrical blowout portion 45 extending rearward from the left end of the casing main body 44, and a substantially circular casing main body 44 And a plate-like mounting portion 46 extending outward in the direction. A suction port 40A for sucking in air is formed on the upper surface of the casing main body 44, and a blowout port 40B for blowing out air is formed on the rear end of the blowout portion 45. Further, the mounting portion 46 includes a first mounting portion 46A, a second mounting portion 46B, and a third mounting portion 46C. The first attachment portion 46A is provided so as to extend forward and obliquely rightward from the case body 44, and the second attachment portion 46B is provided so as to extend substantially rearward from the case body 44. . In addition, the third attachment portion 46C is provided so as to extend from the housing main body 44 diagonally forward to the left. Each of the mounting portions 46A to 46C is formed with a through hole 46H through which the tapping screw 92 is inserted.

The blower 40 is attached to the pan frame 12 via a bracket 60.
As shown in FIGS. 4A and 4B, the bracket 60 is formed of a resin such as polypropylene, and has a base wall 61 and a side wall 62 extending downward from the peripheral portion of the base wall 61. doing. Further, the bracket 60 has a through hole 63, a hollow convex portion 64, three projecting portions 66, three mounting holes 67, and a locking claw 68.

The through hole 63 is a circular hole that penetrates up and down, and is formed in the base wall 61 at a position corresponding to the suction port 40A of the blower 40 (see also FIG. 2).
The convex portion 64 is formed to project upward from a position on the front side of the through hole 63 of the base wall 61.

  The projecting portion 66 is a cylindrical portion that protrudes downward from the base wall 61 where the blower 40 is disposed, and includes a first projecting portion 66A, a second projecting portion 66B, and a third projecting portion 66C. Including. The first protrusion 66A is provided at a position corresponding to the first attachment portion 46A (see FIG. 3) of the blower 40, and the second protrusion 66B is provided at a position corresponding to the second attachment portion 46B. ing. In addition, the third projecting portion 66C is provided at a position corresponding to the third attaching portion 46C. More specifically, the first protrusion 66A and the third protrusion 66C are provided with a recess 64A formed on the back side of the protrusion 64 interposed therebetween. Specifically, the first protrusion 66A is provided on the right side of the recess 64A, and the third protrusion 66C is provided on the left of the recess 64A. The second protrusion 66 </ b> B is provided on the rear side of the through hole 63. The projecting portions 66A to 66C are respectively formed with screw holes 66H into which the tapping screws 92 (see FIG. 3) are screwed. The screw hole 66H is a hole into which a screw groove is cut when the tapping screw 92 is screwed, but may be a hole in which a screw groove is formed in advance.

  The mounting hole 67 is a hole that penetrates up and down, and includes a first mounting hole 67A, a second mounting hole 67B, and a third mounting hole 67C. The first mounting hole 67A is a circular hole, and is provided near the center in the left-right direction of the protrusion 64 formed between the protrusions 66A and 66C. The second mounting hole 67B is a long oblong hole on the left and right, and is provided on the right side of the rear end of the base wall 61. Further, the third mounting hole 67C is provided on the left side of the rear end portion of the base wall 61, and is arranged side by side with the second mounting hole 67B in the left-right direction. The third mounting hole 67C is configured of a substantially circular first hole 67P, a second hole 67Q, and a third hole 67R. The first hole portion 67P is formed at substantially the same position as the second attachment hole 67B in the front-rear direction. In addition, the second hole 67Q is formed to connect with the first hole 67P at the right front of the first hole 67P, and the third hole 67R is at the left front of the first hole 67P. It is formed to be connected to the first hole 67P.

  The locking claw 68 is provided at the left end of the convex portion 64, in other words, on the left side of the first mounting hole 67A. The locking claw 68 extends upward from the convex portion 64 and is formed in a substantially L-shape in side view such that its tip projects rearward.

  As shown in FIG. 5A, the pan frame 12 is provided with a plurality of mounting holes 15 for attaching a wire harness (not shown) connected to electrical components such as the blower 40 or the bracket 60 to the pan frame 12. (15A-15V) is formed. The mounting holes 15A to 15V are holes penetrating vertically and are formed in substantially the same size. The mounting holes 15 </ b> A to 15 </ b> I are formed to be aligned laterally in the vicinity of the center in the front-rear direction of the pan frame 12. In addition, the mounting holes 15J to 15V are formed to be aligned left and right at the rear end portion of the pan frame 12. Further, the mounting holes 15A, 15E, 15I, 15J, 15L to 15O, 15Q to 15T, 15V are formed in a substantially rectangular shape long in the front and rear direction, and the mounting holes 15B to 15D, 15F to 15H, 15K, 15P, 15U Is formed in a substantially rectangular shape long in the left and right.

  As shown in FIGS. 6A and 6B, the bracket 60 engages the screw grommet 80 in the corresponding mounting hole 15 of the pan frame 12, and then the tapping screw 91 is inserted into the mounting hole 67 of the bracket 60. It is attached to the pan frame 12 by screwing it through the screw grommet 80. Moreover, although illustration is abbreviate | omitted, the wire harness connected to electrical components, such as the air blower 40, after holding the said wire harness by a harness clip, for example, engages this harness clip in the corresponding attachment hole 15 By attaching to the pan frame 12.

  As shown in FIG. 2 and FIG. 7, the duct 50 is a tubular member that brings the blower 40 and the air passage 21 formed in the seat cushion pad 20 into communication with each other, and is made of an olefin elastomer (TPO) or the like There is. The duct 50 has a first pipe portion 51 extending in the front and rear direction, and a second pipe portion 52 bent from the rear end of the first pipe portion 51 and extending upward.

  The second tube portion 52 has a bellows 53. As shown in FIG. 8, the bellows portion 53 is a portion in which peak portions 53A and valley portions 53B are alternately formed when viewed from the outside, and has a flexible and stretchable structure. Moreover, the recessed part 54 by which the 1st flange 72 of the connection member 70 mentioned later is hooked is formed in the inner surface of the 2nd pipe part 52. As shown in FIG. The recess 54 is formed on the inner surface of the bellows portion 53. Specifically, the recess 54 is one of the plurality of valleys 53C of the bellows 53 on the inner surface of the duct 50, specifically, the uppermost valley 53C.

As shown in FIG. 2, in the duct 50, the front end portion of the first pipe portion 51 is connected to the blowout portion 45 of the blower 40, and the upper end portion of the second pipe portion 52 is the seat cushion pad 20 via the connection member 70. It is connected to the.
As shown in FIGS. 7 and 8, the connection member 70 is a cylindrical member that connects the duct 50 and the air passage 21 formed in the seat cushion pad 20. Specifically, the connecting member 70 is a cylindrical member whose cross-sectional shape cut along a plane PL orthogonal to the axial direction of the cylinder (the direction in which the axis line AL extends) has a longitudinal shape, specifically, an elongated circular shape in the left and right. It is a member.

  The connecting member 70 has a second flange 71 as a first hooking portion at a first end 70A as one end, and a second flange as a second hooking portion at a second end 70B as the other end. A flange 72 is provided.

  As shown in FIG. 8, the second flange 71 is a portion hooked on the inner surface of the air passage 21, and is provided so as to protrude outward from the outer peripheral surface of the first end 70 </ b> A of the connecting member 70. A stepped portion 22 on which the second flange 71 is hooked is formed on the inner surface of the air passage 21 of the seat cushion pad 20. Specifically, the ventilation passage 21 (first ventilation passage 21A) has an opening 23 connected to the outer surface (lower surface 20B) of the seat cushion pad 20, and a first enlarged diameter portion 24 adjacent to the opening 23. The size of the first enlarged diameter portion 24 as viewed in the axial direction of the connection member 70 is larger than the size of the opening 23. The stepped portion 22 is a stepped portion formed between the opening 23 and the first enlarged diameter portion 24.

  The size of the second flange 71 as viewed in the axial direction of the connecting member 70 is larger than the size of the opening 23. Further, in the present embodiment, the first air passage 21A further includes a second enlarged diameter portion 25 adjacent to the first enlarged diameter portion 24, and the second expanded diameter diameter viewed from the axial direction of the connecting member 70. Since the size of the portion 25 is larger than the size of the first enlarged diameter portion 24, a stepped shape (step-shaped portion 26) is also formed between the first enlarged diameter portion 24 and the second enlarged diameter portion 25. Is formed. The second flange 71 may be configured to be hooked to the stepped portion 26 by increasing the size of the connecting member 70 as viewed in the axial direction.

  The first flange 72 is a hooked portion formed in the inner surface of the duct 50, and is provided so as to protrude outward from the outer peripheral surface of the second end 70B of the connection member 70. More specifically, the first flange 72 is formed in a funnel shape extending obliquely so as to be away from the second flange 71 as it goes from the proximal end to the distal end of the first flange 72. Thus, the first flange 72 is provided to extend substantially along the wall 55 forming the uppermost valley portion 53C (recessed portion 54) of the bellows portion 53.

  The connecting member 70 is disposed in its entirety including the first end 70 A in the air passage 21, and the second end 70 B is connected to the duct 50. Specifically, the connecting member 70 is connected to the duct 50 with the second end 70 B inserted inside the duct 50. The upper end of the duct 50 is disposed in the air passage 21 together with the connection member 70. Thereby, the duct 50 is arranged in the air passage 21 with the uppermost mountain portion 53A formed on the back side of the concave portion 54 (53C) of the bellows portion 53. The duct 50 is in contact with the top of the uppermost ridge portion 53 </ b> A in a state where the top of the upper portion 53 </ b> A bites into the inner surface (seat cushion pad 20) of the air passage 21.

  Further, as shown in FIGS. 7 and 8, the connecting member 70 has a reinforcing portion 75 inside the cylinder. Specifically, the reinforcing portion 75 is a wall-shaped portion provided inside the cylindrical connecting member 70 and extending in the short direction (substantially front-rear direction) of the oval cross-sectional shape of the connecting member 70. The reinforcing portion 75 is provided at a central portion in the longitudinal direction (left and right direction) of the cross-sectional shape of the connecting member 70 so as to bridge a plurality of places, specifically two places, on the inner surface of the connecting member 70. It is done. The reinforcing portion 75 is provided closer to the first end 70A than the second end 70B, in other words, at a position closer to the first end 70A.

Here, an example of attachment of the blower 40 to the pan frame 12 will be described.
As shown in FIG. 3, when the blower 40 is attached to the pan frame 12, first, the bracket 60 is attached to the pan frame 12. Specifically, the screw grommet 80 is engaged with and attached to the mounting holes 15C, 15L, 15Q of the pan frame 12, respectively. Then, the locking claw 68 (see FIG. 4A) of the bracket 60 is hooked and temporarily fixed to the mounting hole 15D formed on the left of the mounting hole 15C, and one tapping screw 91 is mounted on the bracket 60. The screw grommet 80 engaged with the mounting hole 15C is screwed through 67A. Further, another tapping screw 91 is screwed into the screw grommet 80 engaged with the mounting holes 15L, 15Q through the mounting holes 67B, 67C of the bracket 60.

  On the other hand, in the air blower 40, the air blower 40 and the duct 50 are connected by fitting the front end portion of the duct 50 (see FIG. 7) to the blowout portion 45. Further, as shown in FIG. 8, the second end 70 B of the connecting member 70 is inserted inside the upper end of the duct 50, and the first flange 72 is engaged with the recess 54 to attach the connecting member 70 to the duct 50. .

  Then, the blower 40 is attached to the bracket 60, and the duct 50 and the seat cushion pad 20 are connected via the connection member 70. Specifically, as shown in FIG. 3, the tapping screw 92 is passed through the through holes 46H formed in the attachment portions 46A to 46C of the blower 40, and the screw holes formed in the protrusions 66A to 66C of the bracket 60 Screw on 66H. Further, as shown in FIG. 8, the connecting member 70 is inserted into the air passage 21 of the seat cushion pad 20, and the second flange 71 is engaged with the stepped portion 22 and hooked.

  Thus, the blower 40 is attached to the pan frame 12 via the bracket 60, and the duct 50 is connected to the seat cushion pad 20 via the connection member 70, so that the blower 40 and the air passage 21 communicate with each other by the duct 50. It will be done.

  In the present embodiment, the pan frame 12, the blower 40, the bracket 60, and the connecting member 70 are common parts in the driver's seat and the passenger's seat of a car, and in the above, the vehicle seat used in the driver's seat S has been described. To explain further, as shown in FIG. 5A, in the vehicle seat S used in the driver's seat, the opening 23 of the air passage 21 is the center of the vehicle seat S in the left-right direction (see the alternate long and short dash line C). The bracket 60 is mounted at a position shifted to the right from the center of the vehicle seat S in the left-right direction.

  Specifically, when the bracket 60 is attached to the pan frame 12 in the vehicle seat S used in the driver's seat, the mounting holes 15C, 15L, 15Q are used as described above. Specifically, the bracket 60 is screwed into the screw grommet 80 in which the first tapping screw 91 is engaged with the attachment hole 15C through the first attachment hole 67A, and the second tapping screw 91 is attached through the second attachment hole 67B. The screw grommet 80 engaged with the 15L is attached to the pan frame 12 by screwing the third tapping screw 91 into the screw grommet 80 engaged with the attachment hole 15Q through the third attachment hole 67C. .

  At this time, as shown in FIG. 5B, in the second attachment hole 67B, the shaft portion of the tapping screw 91 is located near the center in the left-right direction, and as shown in FIG. In the mounting hole 67C, the shaft portion of the tapping screw 91 is fitted in the first hole portion 67P. The second mounting hole 67B is a long hole in the left and right, so that even if the position of the mounting hole 15L is slightly deviated in the left and right direction, the positional deviation can be absorbed.

  On the other hand, as shown in FIG. 9A, in the vehicle seat S used in the front passenger seat, the opening 23 of the air passage 21 is shifted to the left from the center of the vehicle seat S (see the alternate long and short dash line C). It is formed in the following position. Therefore, in the vehicle seat S used in the front passenger seat, the bracket 60 is attached at a position shifted to the left from the center of the vehicle seat S in the left-right direction.

  Specifically, in the vehicle seat S used in the front passenger seat, when the bracket 60 is attached to the pan frame 12, the mounting holes 15F, 15P, 15U are used. Specifically, the bracket 60 is screwed into the screw grommet 80 in which the first tapping screw 91 is engaged with the attachment hole 15F through the first attachment hole 67A, and the second tapping screw 91 is attached through the second attachment hole 67B. The screw grommet 80 engaged with 15P is attached to the pan frame 12 by screwing the third tapping screw 91 into the screw grommet 80 engaged with the attachment hole 15U through the third attachment hole 67C. .

  At this time, as shown in FIG. 9B, in the second mounting hole 67B, the shaft portion of the tapping screw 91 is located near the left end portion, and as shown in FIG. 9C, the third mounting hole At 67C, the shaft portion of the tapping screw 91 is fitted in the second hole portion 67Q. The mounting hole 15U is formed at a position slightly offset to the front side with respect to the mounting hole 15P, but the third mounting hole 67C is provided with a second hole 67Q diagonally in front of the first hole 67P. Therefore, it is possible to absorb the misalignment.

  In addition, although the shape of the 1st pipe part 51 (refer FIG. 7) differs somewhat between what is used by a driver's seat and what is used by a front passenger seat, the structure of the 2nd pipe part 52 is the duct 50. Are almost the same.

  According to the embodiment described above, since the connecting member 70 has the first flange 72 as the second hooking portion hooked on the duct 50, the first flange 72 of the connecting member 70 and the recess 54 of the duct 50 Can prevent the duct 50 from coming off the connecting member 70. Further, since the connecting member 70 has the second flange 71 as a first hooking portion which is hooked on the inner surface of the air passage 21, the stepped portion formed on the second flange 71 of the connecting member 70 and the inner surface of the air passage 21. It is possible to prevent the connection member 70 from coming off the seat cushion pad 20 together with the duct 50 by being caught with the portion 22.

  In addition, since the second end 70B of the connecting member 70 is inserted inside the duct 50 and the first flange 72 as the second hooking portion is hooked on the inner surface of the duct 50, the duct inside the tubular connecting member As compared with the configuration in which the second hooking portion is hooked on the outer surface of the duct 50 by inserting 50, the connecting member 70 can be made compact.

  Moreover, since the recessed part 54 in which the 1st flange 72 is hooked is formed in the inner surface of the duct 50, it can suppress that the duct 50 remove | deviates from the connection member 70 by easy structure.

  Moreover, since the duct 50 has the bellows part 53 which can be expanded and contracted, and the concave part 54 is formed in the bellows part 53, it is possible to absorb shaking, vibration and the like by the expandable bellows part 53. It is possible to further prevent the connection member 70 from coming off.

  In addition, since the recess 54 is formed by the valley portion 53C of the bellows portion 53, the duct 50 is compared with the configuration in which the first flange 72 is hooked separately from the valley portion 53C on the inner peripheral surface of the bellows portion 53. Can be made simple.

  Further, since the first flange 72 extends along the wall 55 forming the valley portion 53C (concave portion 54) of the bellows 53 on the inner surface of the duct 50, the edge of the first flange 72 may scratch the wall 55. Be suppressed. Thereby, the damage to the duct 50 can be suppressed. Further, since the second hooking portion is in the form of a flange, the first flange 72 and the inner surface of the duct 50 can be brought into contact over the entire circumference of the first flange 72, so the adhesion between the connecting member 70 and the duct 50 is achieved. Air leakage can be suppressed.

  Further, the duct 50 restricts the movement of the duct 50 by the seat cushion pad 20 because the uppermost mountain portion 53A of the bellows portion 53 is disposed in the air passage 21 and is in contact with the inner surface of the air passage 21. be able to. This can further suppress the duct 50 from coming off the connection member 70.

  Moreover, since the connection member 70 has the reinforcement part 75, it can suppress that the cylindrical connection member 70 deform | transforms so that it may collapse. Further, since the deformation of the connecting member 70 can be suppressed, it is possible to further suppress the duct 50 from coming off the connecting member 70, and the passage of air in the seat cushion S1 can be favorably secured.

  Further, since the reinforcing portion 75 is provided at the central portion in the longitudinal direction of the oval cross section of the connecting member 70, deformation of the cylindrical connecting member 70 so as to be crushed can be further suppressed. And thereby, while being able to suppress that the duct 50 remove | deviates from the connection member 70 more, the passage of the air in seat cushion S1 can be ensured more favorably.

  Further, since the reinforcing portion 75 is provided at a position close to the first end 70A side where the second flange 71 is formed, it is effective to deform so that the first end 70A side of the connection member 70 is crushed. Can be suppressed. Thus, the connection member 70 can be prevented from coming off the seat cushion pad 20.

  In addition, since the stepped portion 22 in which the second flange 71 of the connecting member 70 is hooked is formed on the inner surface of the ventilation passage 21, the connecting member 70 is inserted into the ventilation passage 21 and the second flange 71 is inserted into the stepped portion 22. The connection member 70 can be easily attached to the seat cushion pad 20 simply by hooking. In addition, since the first hooking portion is in the form of a flange, the second flange 71 and the inner surface of the air passage 21 can be brought into contact over the entire circumference of the second flange 71. The adhesion of the above can be increased, and air leakage can be suppressed.

As mentioned above, although one embodiment of the invention was described, the present invention is not limited to the above-mentioned embodiment. About a specific structure, it can change suitably in the range which does not deviate from the meaning of invention as follows.
For example, in the embodiment described above, the cross-sectional shape of the connection member 70 is an oval, but is not limited to this, and may be an oval, a substantially rectangular shape, or the like. Moreover, the cross-sectional shape of the connection member is not limited to the longitudinal shape, and may be, for example, a circular shape or a substantially square shape.

  Moreover, in the said embodiment, the reinforcement part 75 was provided in I shape which connects two places of the inner surface of the connection member 70 seeing from the axial direction of the connection member 70, but it is not limited to this. For example, the reinforcing portion may be provided in a Y shape connecting three places of the inner surface of the connecting member, or may be provided in a cross shape connecting four places of the inner surface of the connecting member. Further, the reinforcing portion may be provided in a honeycomb shape. Moreover, multiple reinforcement parts may be provided inside the connection member. Further, the connection member may be configured not to include the reinforcing portion.

  Moreover, in the said embodiment, although the whole connection member 70 including the 1st end part 70A as one end part was arrange | positioned in the ventilation path 21, it is not limited to this. For example, the connection member may be configured such that only one end is disposed in the air passage and the other end extends outside the air passage (seat pad).

  Further, in the above embodiment, the recess 54 in which the first flange 72 (second hooking portion) of the connection member 70 is hooked is formed by the valley portion 53C of the bellows 53, but is not limited thereto. The recess may be formed separately from the valley portion. Moreover, the recessed part may be formed in parts other than a bellows part. Note that the duct may not have a bellows part.

  Moreover, in the said embodiment, although the 1st flange 72 was illustrated as a 2nd hook part, it is not limited to this, for example, a 2nd hook part is a boss-like convex part etc. which project from the peripheral face of connecting member It may be. In this case, the recess on the inner surface of the duct in which the second hooking portion is engaged and hooked may be a groove-like recess extending in the circumferential direction of the inner surface of the duct 50 such as the recess 54 of the embodiment. It may be a hole-like recess corresponding to the boss-like protrusion. In the embodiment, the first flange 72 (convex second hooking portion) formed on the connecting member 70 is configured to be hooked in the concave portion 54 (concave portion) formed on the inner surface of the duct 50. However, it is not limited to this. For example, the concave second hooking portion formed on the connecting member may be engaged with and hooked to the convex portion formed on the inner surface of the duct. The above is the same for the hooking structure of the first hook portion and the inner surface of the air passage.

  Moreover, in the said embodiment, although the connection member 70 was a structure inserted into the inside of the duct 50, it is not limited to this, For example, the structure fitted to the outer side of a duct, in other words, a duct is a cylindrical connection member It may be inserted inside the

  Moreover, in the said embodiment, although the sirocco fan was illustrated as the air blower 40, it is not limited to this, For example, a propeller fan, a turbo fan, etc. may be used. Moreover, in the said embodiment, although the vehicle seat S was comprised so that air might be blown out by the action | operation of the air blower 40, it is not limited to this, For example, it is comprised so that air may be inhaled by the action | operation of a blower. May be The blower may be capable of switching between blowing and suction by, for example, switching the rotation direction of the blades.

  Moreover, in the said embodiment, although the pad (seat cushion pad 20) of seat cushion S1 was illustrated as a seat pad, it is not limited to this. For example, the seat pad may be a seat back pad. In this case, the blower may be provided on the seat cushion as in the above embodiment, but is not limited to this and may be provided on the seat back. In addition, the air blown from one air blower may be sent to both the air passage of the seat cushion pad and the air passage of the seat back pad by a branching duct. The seat cushion and the seat back may each be configured to include a pad having an air passage, a blower, and a duct.

  Moreover, although the vehicle seat S mounted in a motor vehicle was illustrated as a seat in the said embodiment, it is not limited to this, For example, the vehicle seat mounted in vehicles other than a car, for example, rail cars, ships, aircraft etc. It may be Further, the seat is not limited to a vehicle seat, and may be, for example, a seat used at home or the like.

  In addition, each element described in the above-described embodiment and modification may be implemented in any combination.

Reference Signs List 20 seat cushion pad 21 air passage 22 stepped portion 40 air blower 50 duct 53 bellows 53A mountain portion 53C valley portion 54 recessed portion 55 wall 70 connecting member 70A first end 70B second end 71 second flange 72 first flange 75 Reinforcement section S Vehicle seat

Claims (10)

A sheet comprising a seat pad having an air passage, an air blower, and a duct connecting the air blower and the air passage,
At least one end portion is disposed in the air passage and the other end portion is provided with a tubular connecting member connected to the duct;
The connecting member has a first hooking portion hooked to the inner surface of the air passage at the one end and a second hooking portion hooked to the duct at the other end. The other end of the connecting member is inserted into the inside of the duct,
The sheet according to claim 1, wherein the second hooking portion is hooked on an inner surface of the duct.   The sheet according to claim 2, wherein a concave portion on which the second hook portion is hooked is formed on an inner surface of the duct. The duct has a telescopic bellows section,
The said recessed part is formed in the said bellows part, The sheet | seat of Claim 3 characterized by the above-mentioned.   The sheet according to claim 4, wherein the recess is a valley portion of the bellows portion on an inner surface of the duct.   The sheet according to claim 5, wherein the second hooking portion includes a first flange that protrudes from an outer peripheral surface of the connecting member and extends along a wall forming the valley.   The said duct is arrange | positioned in the said ventilation path, and the peak part formed in the back side of the said valley part of the said bellows part contacts the inner surface of the said ventilation path, It is characterized by the above-mentioned. Sheet of paper.   The sheet according to any one of claims 1 to 7, wherein the connecting member has a reinforcing portion provided to connect and crosslink a plurality of places on the inner surface. The connecting member has a longitudinal cross-sectional shape cut in a plane orthogonal to the axial direction of the cylinder,
The sheet according to claim 8, wherein the reinforcing portion is provided at a central portion in a longitudinal direction of the cross-sectional shape. The first hooking portion includes a second flange protruding from an outer peripheral surface of the connection member,
The sheet according to any one of claims 1 to 9, wherein a stepped portion in which the second flange is hooked is formed on an inner surface of the air passage.

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