JP2018020714A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat which can protect a duct and inhibit movement of the duct.SOLUTION: A vehicle seat includes: a seat cushion having a first ventilation passage; a seat back haing a second ventilation passage; a blower; a duct 40 allowing the first ventilation passage and the second ventilation passage to communicate with the blower; and a seat frame F forming a framework of the seat cushion and the seat back. The duct 40 has a connection pipe part 43 which is disposed so as to be spanned between the seat cushion and the seat back. The vehicle seat further includes a cover member 60 which covers a part of the connection pipe part 43 and is fixed to the seat frame F to restrict a position of the connection pipe part 43.SELECTED DRAWING: Figure 11

Description

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

  Conventionally, a seat cushion and a seat back in which an air outlet and an air passage are formed, a blower attached to the bottom surface of the seat cushion, and a duct that communicates the air blower with the air passage of the seat back, A vehicle seat configured to send conditioned air to an outlet through an air passage or a duct is known (Patent Document 1).

JP 2009-023477 A

  By the way, in the conventional structure, since the duct was arrange | positioned in the state exposed behind the seat cushion, there existed a possibility that the passenger | crew's foot etc. of a backseat might contact | win a duct, for example. Also, since the duct is held by the vehicle seat by inserting one end into the discharge port of the blower and the other end being inserted into the air passage of the seat back, the intermediate portion of the duct not held by the vehicle seat is There was also a risk of moving.

Then, an object of this invention is to provide the vehicle seat which can protect a duct and can suppress a motion of a duct while protecting a duct.
Moreover, an object of this invention is to move a seat cushion and a seat back favorably.

  In order to achieve the above object, a vehicle seat according to the present invention includes a seat cushion having a first air passage, a seat back having a second air passage, a blower, the first air passage, and the second air passage. A duct that communicates a path with the blower, and a seat frame that constitutes a skeleton of the seat cushion and the seat back, the duct being spanned between the seat cushion and the seat back The vehicle seat further includes a cover member that covers the at least part of the connection pipe part and that is fixed to the seat frame to regulate the position of the connection pipe part. It is characterized by providing.

  According to such a configuration, since the cover member that covers the connecting pipe portion of the duct is provided, the duct can be protected by the cover member. Moreover, since the cover member regulates the position of the connecting pipe portion by being fixed to the seat frame, the movement of the duct can be suppressed by the cover member.

  In the vehicle seat described above, the connecting pipe portion may have a flexible portion having flexibility, and the cover member may be provided so as to cover at least a part of the flexible portion. .

  According to this, the flexible part is easier to be damaged and move than other parts when the rear passenger's foot hits, etc., so that the cover member is provided so as to cover the flexible part, It is possible to effectively protect the duct and suppress the movement of the duct.

  In the vehicle seat described above, the cover member may have a convex portion that protrudes toward the inner side where the connection pipe portion is disposed and contacts the connection pipe portion.

  According to this, the movement of the duct can be further suppressed by the contact between the convex portion and the connecting pipe portion.

  In the vehicle seat described above, the convex portion may be provided so as to sandwich the connecting pipe portion on both the left and right sides of the connecting pipe portion.

  According to this, the right-and-left movement of the duct can be effectively suppressed by the convex portions provided on the left and right sides of the connecting pipe portion.

  In the vehicle seat described above, the connection pipe portion has a bellows portion in which peaks and valleys are alternately formed, and the convex portion is provided so as to enter the valley portion of the bellows portion. It can be.

  According to this, while suppressing the movement of the duct to the left and right, the convex portion enters the valley portion of the bellows portion, thereby suppressing the movement in the direction in which the peaks (valley portions) of the duct are arranged. it can. Thereby, the motion of a duct can be suppressed further.

  Further, in the vehicle seat described above, one of the cover member and the connecting pipe portion has a convex portion protruding toward the other on both the left and right sides of the connecting pipe portion, and the cover member and the connecting pipe portion The other may have a recess with which the protrusion engages.

  According to this, the movement of the duct can be further suppressed by the engagement between the convex portion and the concave portion.

  In the vehicle seat described above, the concave portion may have a groove shape extending along a direction in which the duct extends.

  According to this, since the duct and the cover member can move relative to each other in the direction in which the recess extends, the seat cushion and the seat back can be moved favorably in a configuration in which one of the seat cushion and the seat back is movable with respect to the other. be able to.

  In the vehicle seat described above, the cover member extends from the left and right ends of the first wall toward the seat frame, with the first wall disposed so as to sandwich the connecting pipe portion between the cover member and the seat frame. It can be set as the structure which has a pair of 2nd wall.

  According to this, it is possible to achieve both protection of the duct and suppression of the movement of the duct while the cover member has a simple configuration.

  In the vehicle seat described above, the cover member may be formed of a material harder than the connection pipe portion.

  According to this, the duct can be well protected by the cover member.

  According to the present invention, the duct can be protected by the cover member, and the movement of the duct can be suppressed.

  Moreover, according to this invention, protection of a duct and suppression of the movement of a duct can be effectively performed by providing a cover member so that the flexible part of a duct may be covered.

  Moreover, according to this invention, by providing a convex part in a cover member, the motion of a duct can be suppressed more by contact | abutting with a convex part and a connecting pipe part.

  Moreover, according to this invention, the movement to the right and left of a duct can be effectively suppressed by providing a convex part so that a connection pipe part may be pinched | interposed on the both right and left sides of a connection pipe part.

  Moreover, according to this invention, the movement of a duct can be further suppressed by providing a convex part so that it may enter in the trough part of the bellows part of a connection pipe part.

  Further, according to the present invention, one of the cover member and the connecting pipe portion has a convex portion, and the other has a concave portion, so that the movement of the duct is further suppressed by the engagement between the convex portion and the concave portion. be able to.

  Moreover, according to this invention, a seat cushion and a seat back can be favorably moved by making a recessed part into the groove shape extended along the direction where a duct extends.

  Further, according to the present invention, the cover member has the first wall and the pair of second walls, so that both the protection of the duct and the suppression of the movement of the duct are achieved while the cover member has a simple configuration. be able to.

  Moreover, according to this invention, a duct can be favorably protected by a cover member by forming a cover member from a material harder than a connection pipe part.

It is a perspective view of a vehicle seat as a vehicle seat according to an embodiment. It is sectional drawing which shows schematic structure of the vehicle seat. It is a perspective view of a seat frame and a duct. It is a perspective view of a pan frame, a bracket, a blower, and a duct front end part. It is the perspective view which looked at the bracket, the 1st clip, and the 2nd clip from the bottom. It is the perspective view (a) and sectional drawing (b) of a 1st clip. It is the perspective view (a) and front view (b) of a 2nd clip. It is the figure which looked at the pan frame from the bottom. The figure which shows a mode that the engaging part of a 1st clip is engaged with an engaging hole, and the figure (c) which shows a mode that the engaging part of a 2nd clip is engaged with an engaging hole , (D). It is the figure which looked at the seat frame, the duct, and the cover member from the left. It is the perspective view which looked at the seat frame, the duct, and the cover member from the back. It is the figure (a) which looked at the lower frame, the duct, and the cover member from the top, and XX sectional drawing (b) of figure (a). It is the figure which looked at the seat frame, the duct, and the cover member in a state where the seat back is tilted back from the left. It is sectional drawing (a) of the attachment structure of the air blower in a 1st modification, and the figure (b) which looked at the air blower and the bracket from the bottom. It is sectional drawing (a), (b) of the attachment structure of the air blower in a 2nd modification. It is sectional drawing (a) of the attachment structure of the air blower in a 3rd modification, and sectional drawing (b) of the attachment structure of the air blower in a 4th modification. It is sectional drawing (a) of the duct and cover member in a 5th modification, and sectional drawing (b) of the duct and cover member in a 6th modification. It is a perspective view of a duct and a cover member in the 7th modification. It is sectional drawing of the duct and cover member in an 8th modification.

Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. In this specification, front and rear, left and right, and top and bottom are based on front and rear, left and right, and top and bottom viewed from a person sitting on a vehicle seat.
As shown in FIG. 1, the vehicle seat of this embodiment is comprised as the vehicle seat S mounted in a motor vehicle, and is provided with the seat cushion S1 and the seat back S2.

  The seat cushion S1 has a cushion pad P1, and the seat back S2 has a back pad P2. As shown in FIG. 2, the cushion pad P <b> 1 has a plurality of first ventilation holes H <b> 1 formed on the upper surface, and a first ventilation path A <b> 1 communicating with the first ventilation hole H <b> 1 inside. Further, the back pad P2 has a plurality of second ventilation holes H2 formed on the front surface and a second ventilation path A2 communicating with the second ventilation holes H2 formed therein.

  The vehicle seat S further includes a blower device 30 disposed under the cushion pad P1, and a duct 40 that allows the blower device 30 to communicate with the air passages A1 and A2. As shown by the arrows in FIG. 2, in the vehicle seat S, the air blown from the blower 30 is seated on the vehicle seat S through the ducts 40 and the air passages A <b> 1 and A <b> 2 through the vent holes H <b> 1 and H <b> 2. It is configured to be blown out toward the passenger.

  A seat frame F as shown in FIG. 3 is built in the vehicle seat S. The seat frame F includes a seat cushion frame F1 constituting a skeleton of the seat cushion S1 and a seat back frame F2 constituting a skeleton of the seat back S2. The seat cushion S1 is configured by covering the seat cushion frame F1 with a cushion pad P1 and a breathable skin material, and the seat back S2 has a breathability with the back pad P2 on the seat back frame F2. It is comprised by covering the skin material which has.

The seat cushion frame F1 includes a cushion side frame 11 as a pair of left and right side frames, a pan frame 12 as a plate-like portion, and a connecting pipe 13.
The cushion side frame 11 is a plate-like member that constitutes the left and right frames of the seat cushion S1, and is arranged in a state of being spaced apart from each other on the left and right.
The pan frame 12 is a member that connects the front portions of the left and right cushion side frames 11, and is formed by processing a metal plate. The left and right ends of the pan frame 12 are connected to the front end of the cushion side frame 11 by welding or the like.
The connection pipe 13 is a member that connects the rear portions of the left and right cushion side frames 11.

The lower part of the seat back frame F2 is connected to the rear part of the seat cushion frame F1 via a reclining mechanism RL so as to be pivotable back and forth, and a pair of left and right sheet metal frames 22, a pipe frame 23, a lower frame 24, have.
The sheet metal frame 22 is disposed in a state of being spaced apart from each other on the left and right.
The pipe frame 23 includes left and right upper side frames 23A that extend substantially vertically and an upper frame 23B that connects upper ends of the upper side frames 23A. The lower parts of the left and right upper side frames 23A are connected to the upper part of the sheet metal frame 22 by welding, thereby constituting a pair of back side frames 21 together with the left and right sheet metal frames 22.
The lower frame 24 is a member that connects the lower portions of the sheet metal frame 22 and is formed by processing a metal plate. The lower frame 24 is connected by welding to the portion where the left and right ends extend to the left and right inside the rear end of the sheet metal frame 22.

As shown in FIG. 4, the blower device 30 is a sirocco fan as an example, and includes a casing 31, an impeller 32, and a motor (not shown) for rotating the impeller 32.
The housing 31 includes a housing portion 34 in which the impeller 32 and the motor are housed, a cylindrical blowing portion 35 extending rearward from the left end portion of the housing portion 34, and a substantially circular housing portion 34 radially outward. It has three attachment parts 36-38 extended toward. A suction port 30 </ b> A for sucking air is formed on the upper surface of the accommodating portion 34, and a blower outlet 30 </ b> B for blowing air is formed at the rear end of the blowout portion 35. The mounting portion 36 extends diagonally right forward from the housing portion 34, the mounting portion 37 extends substantially rearward from the housing portion 34, and the mounting portion 38 is provided to extend diagonally left frontward from the housing portion 34. It has been. A through hole (reference numeral omitted) through which the tapping screw 91 is inserted is formed in the attachment portions 36 to 38.

The air blower 30 is attached to the pan frame 12 via a bracket 50.
The bracket 50 is a member for attaching the blower device 30 to the pan frame 12. More specifically, the bracket 50 is a member interposed between the blower 30 and the pan frame 12. In this invention, you may provide a bracket for uses other than the use of fixing an air blower to a pan frame. For example, when there is a step in the pan frame, a bracket may be provided to eliminate the step by making the mounting surface of the blower device substantially flat. In addition, a bracket may be provided to ensure the distance between the blower and the pan frame.

  The bracket 50 is made of a resin such as polypropylene, and includes a base wall 51 and side walls 52 extending downward from the peripheral edge of the base wall 51. The base wall 51 includes a through hole 53 formed at a position corresponding to the suction port 30 </ b> A of the blower device 30, a hollow convex portion 54 protruding upward at a position on the front side of the through hole 53, and three Protrusions 56 to 58 (see FIG. 5). In addition, the bracket 50 is provided with first engaging portions 110 and 210 that protrude upward toward where the pan frame 12 is disposed.

  As shown in FIG. 5, the protrusions 56 to 58 are portions that protrude downward from the base wall 51 where the blower 30 is disposed. The protrusion 56 is provided at a position corresponding to the attachment part 36 of the blower device 30, the protrusion 57 is provided at a position corresponding to the attachment part 37, and the protrusion 58 is provided at a position corresponding to the attachment part 38. It has been. Further, the protruding portions 56 and 58 are provided on the right side of the recessed portion 54A and the protruding portion 58 is provided on the left side of the recessed portion 54A so as to sandwich the recessed portion 54A formed on the back side of the protruding portion 54. . Further, the protruding portion 57 is provided on the rear side of the through hole 53. Screw holes 56A, 57A, 58A into which the tapping screws 91 (see FIG. 4) are screwed are formed in the protrusions 56-58. The screw holes 56A to 58A are holes in which a thread groove is cut when the tapping screw 91 is screwed in, but may be holes in which a thread groove is formed in advance.

  The first engaging portions 110 and 210 are portions that engage with the pan frame 12. In the present embodiment, the first engagement portions 110 and 210 are provided on the bracket 50 by attaching the first clip 100 and the second clip 200 as attachment members to the bracket 50.

As shown in FIGS. 6A and 6B, the first clip 100 includes a first engagement portion 110, a second engagement portion 120, and a flange portion 130.
The first engagement part 110 includes a first engagement part main body 111 protruding from the flange part 130, a first locking part 112, and a first elastic deformation part 113.
The first elastic deformation portion 113 is a portion between two slit holes 111 </ b> A formed at both end portions of the first engagement portion main body 111 in the longitudinal direction of the flange portion 130, and is located inside the first engagement portion 110. It is formed so as to bend elastically.
The first locking portion 112 is a portion that is locked to the pan frame 12 in a state where the first engaging portion 110 is engaged with the first engaging hole 12A of the pan frame 12, and from the first elastic deformation portion 113. It is provided so as to protrude toward the outside of the first engaging portion 110.

  The second engagement portion 120 is a portion that engages with the bracket 50, and is provided so as to protrude toward the side opposite to the first engagement portion 110 (the side where the bracket 50 is disposed). The second engagement portion 120 includes a second engagement portion main body 121, a second engagement portion 122 that is engaged with the bracket 50 in a state of being engaged with the second engagement hole 50A of the bracket 50, and two slits. The second elastic deformation portion 123 is provided between the holes 121A and formed to be elastically bent toward the inside of the second engagement portion 120. In the present embodiment, the second engagement portion 120 is formed substantially symmetrically with the first engagement portion 110 with the flange portion 130 interposed therebetween.

As shown in FIGS. 7A and 7B, the second clip 200 includes a first engagement portion 210, a second engagement portion 220, and a flange portion 230.
The first engagement portion 210 includes a first engagement portion main body 211 protruding from the flange portion 230, a first locking portion 212, and a first elastic deformation portion 213.
The first elastic deformation portion 213 is a portion that protrudes from the tip of the first engagement portion main body 211 toward the outer side in the longitudinal direction of the flange portion 230, bends toward the flange portion 230, and extends to connect to the flange portion 230. One is provided on each side of the first engaging portion main body 211 with the first engaging portion main body 211 interposed therebetween. The first elastic deformation portion 213 is formed so as to be elastically bent toward the first engagement portion main body 211.
The first locking portion 212 is a portion that is locked to the pan frame 12 in a state where the first engagement portion 210 is engaged with the first engagement hole 12B of the pan frame 12, and from the first elastic deformation portion 213. The first engaging part main body 211 is provided so as to protrude toward the opposite side.

  The second engaging portion 220 is a portion that engages with the bracket 50 and is provided so as to protrude toward the side opposite to the first engaging portion 210 (the side where the bracket 50 is disposed). The second engagement portion 220 includes a second engagement portion main body 221, a second engagement portion 222 that is engaged with the bracket 50 in a state of being engaged with the second engagement hole 50B of the bracket 50, and a second engagement portion. And a second elastic deformation portion 223 formed to be elastically bent toward the inside of the joint portion 220. In the present embodiment, the second engagement portion 220 is formed substantially symmetrically with the first engagement portion 210 with the flange portion 230 interposed therebetween.

  As shown in FIG. 5, the bracket 50 is provided with second engagement holes 50 </ b> A and 50 </ b> B that engage with the second engagement portions 120 and 220 of the clips 100 and 200. The second engagement holes 50A and 50B are holes that penetrate vertically. The second engagement hole 50A has a substantially rectangular shape that is long on the left and right, and is provided in the convex portion 54 (concave portion 54A) between the protruding portions 56 and 58. The second engagement holes 50 </ b> B have a substantially rectangular shape that is long in the front-rear direction, and are provided one by one at the rear end portion of the base wall 51 with a space left and right. In addition, the protrusion part 57 is provided in the position between the two 2nd engagement holes 50B and 50B in the left-right direction.

  As shown in FIG. 8, the pan frame 12 is provided with first engagement holes 12 </ b> A and 12 </ b> B that engage with the first engagement portions 110 and 210 provided on the bracket 50. Specifically, the pan frame 12 has a plurality of mounting holes 12H, and in the present embodiment, three of the plurality of mounting holes 12H are used as the first engagement holes 12A and 12B. The first engagement hole 12A is a substantially rectangular hole that is long on the left and right, and the second engagement hole 50B is a substantially rectangular hole that is long on the front and rear.

  The attachment hole 12H is a hole for attaching the wire harness of the air blower 30 and other electrical components, and is provided so as to penetrate vertically. The wire harness is held by a harness clip, and is attached to the pan frame 12 by engaging the harness clip with the attachment hole 12H. The mounting hole 12H is a standardized hole. Specifically, each of the attachment holes 12H is a substantially rectangular hole, and is formed to have substantially the same size and to be arranged at substantially equal intervals on the left and right. The pan frame 12 is provided with two rows of a plurality of mounting holes 12H arranged side by side in the front-rear direction. The attachment hole 12H may be a hole for attaching a member other than the wire harness.

  When attaching the blower 30 to the pan frame 12, first, as shown in FIG. 5, the clips 100 and 200 are attached to the bracket 50, and the first engaging portions 110 and 210 are provided on the bracket 50. Specifically, the second engagement portion 120 of the first clip 100 is engaged with the second engagement hole 50 </ b> A of the bracket 50, and the second engagement portion 220 of the second clip 200 is engaged with the second engagement of the bracket 50. Engage with hole 50B. Note that the action of the second engagement portions 120 and 220 at this time is the same as that of the first engagement portions 110 and 210 formed substantially symmetrically with the flange portions 130 and 230 interposed therebetween. The description of the engagement of the first engaging portions 110 and 210 will be substituted. (In FIG. 9, the code | symbol relevant to the 2nd engaging parts 120 and 220 is attached | subjected in the parenthesis.)

  Since the second engagement hole 50A has a substantially rectangular shape that is long on the left and right, the first engagement portion 110 is flanged by the engagement of the second engagement portion 120 of the first clip 100 and the second engagement hole 50A. The longitudinal direction of the part 130 is provided in the bracket 50 in a direction along the left-right direction. The direction of the first engagement portion 110 is the same as the longitudinal direction of the first engagement hole 12 </ b> A of the pan frame 12. Further, since the second engagement hole 50B has a substantially rectangular shape that is long in the front-rear direction, the first engagement portion 210 is engaged by the engagement between the second engagement portion 220 of the second clip 200 and the second engagement hole 50B. The flange portion 230 is provided on the bracket 50 such that the longitudinal direction of the flange portion 230 is along the front-rear direction. The direction of the first engagement portion 210 is the same as the longitudinal direction of the first engagement hole 12B of the pan frame 12.

  Next, the blower 30 is attached to the bracket 50. Specifically, as shown in FIG. 4, the tapping screw 91 is inserted through the through holes formed in the attachment portions 36 to 38 of the blower device 30, and the protrusions 56 to 58 (see FIG. 5) of the bracket 50. The screw holes 56A to 58A are screwed. In addition, by attaching the air blower 30 to the bracket 50, the three protrusions 56 to 58 can be brought into contact with the attachment portions 36 to 38 of the air blower 30. Thereby, since the air blower 30 becomes difficult to rattle, the attachment rigidity of the air blower 30 can be improved.

  Next, the bracket 50 to which the blower 30 is fixed is attached to the pan frame 12. Specifically, first, the two first engaging portions 210 on the rear side of the bracket 50 are engaged with the first engaging holes 12 </ b> B (see FIG. 8) of the pan frame 12. Thereafter, the first engaging portion 110 on the front side of the bracket 50 is engaged with the first engaging hole 12 </ b> A of the pan frame 12.

  When the first engaging portions 110 and 210 are engaged with the first engaging holes 12A and 12B, as shown in FIGS. 9A and 9C, the distal end portions of the first engaging portions 110 and 210 are The first engaging portions 112 and 212 are abutted against the lower surfaces of the peripheral portions of the first engaging holes 12A and 12B of the pan frame 12 by being inserted into the first engaging holes 12A and 12B. Then, by pushing the first engagement portions 110 and 210 from this state, the first elastic deformation portions 113 and 213 are bent as shown in FIGS. 210 is inserted into the first engagement holes 12A and 12B. After that, when the first locking portions 112 and 212 completely pass through the first engagement holes 12A and 12B, the first elastic deformation portions 113 and 213 recover and restore the bending, so that FIG. As shown in FIG. 7B, the first locking portions 112 and 212 are locked to the upper surfaces of the peripheral portions of the first engagement holes 12 </ b> A and 12 </ b> B of the pan frame 12.

  Thereby, the air blower 30 can be attached to the pan frame 12 via the bracket 50. In addition, the order when attaching the 1st clip 100, the 2nd clip 200, and the air blower 30 to the bracket 50 is arbitrary. Further, the order in which the first engaging portions 110 and 210 are engaged with the pan frame 12 may be opposite to the order described above.

  As shown in FIG. 3, the duct 40 includes a cushion pipe part 41, a back pipe part 42, and a connection pipe part 43.

  The cushion tube portion 41 is formed from a resin such as polypropylene or polyethylene, and includes a first tube portion 44 and a second tube portion 45. As shown in FIG. 10, the first pipe portion 44 is disposed so as to extend substantially forward and backward and pass under the cushion pad P <b> 1 (not shown in FIG. 10). It bends and extends upward and is arranged behind the connecting pipe 13. The first pipe part 44 has a front end connected to the blowing part 35 (see FIG. 4) of the blower 30 and a rear end connected to the connection pipe part 43. As shown in FIG. 4, the second pipe portion 45 is provided so as to branch from the front end portion of the first pipe portion 44 and extend upward, and the upper end thereof is connected to the first air passage A1 of the cushion pad P1. It is connected.

  Returning to FIG. 10, the back tube portion 42 is formed of a resin such as polypropylene or polyethylene. The back tube portion 42 has a lower end portion extending substantially up and down arranged behind the lower frame 24, and an upper end portion bent and extended forward and arranged above the lower frame 24. The back pipe part 42 has a lower end connected to the connection pipe part 43 and an upper end connected to the second ventilation path A2 of the back pad P2.

  The connection pipe part 43 is a part for connecting the cushion pipe part 41 and the back pipe part 42, and is formed of an olefin-based elastomer (TPO) or the like. The connecting pipe portion 43 is disposed behind the lower frame 24 so as to be bridged between the seat cushion S1 and the seat back S2. The connection pipe part 43 has a first connection part 46 to which the cushion pipe part 41 is connected, a second connection part 47 to which the back pipe part 42 is connected, and a bellows part 48 as a flexible part. As shown in FIG. 12 (b), the bellows portion 48 is a portion in which crest portions 48A and trough portions 48B are alternately formed, and has flexibility and can be expanded and contracted.

As shown in FIG. 11, a cover member 60 is attached to the rear side of the seat frame F.
The cover member 60 is made of a material harder than the connection pipe portion 43 of the duct 40, for example, a resin material such as polypropylene or polyethylene, and includes a first wall 61, a pair of left and right walls 62, and a pair of left and right walls. And an attachment portion 63.

As shown in FIG. 12A, the first wall 61 is a wall disposed behind the lower frame 24 so as to sandwich the connecting pipe portion 43 with the lower frame 24 constituting the seat frame F. . The second wall 62 is a wall extending from the left and right ends of the first wall 61 toward the front where the lower frame 24 is disposed. With such a configuration, the cover member 60 has a substantially U-shaped cross-sectional shape whose front is opened by the first wall 61 and the second wall 62. The first wall 61 and the second wall 62 are formed to extend vertically from the position behind the lower frame 24 to the position behind the connecting pipe 13 (see FIG. 10).
The attachment portion 63 is a portion extending from the front end portion of the upper portion of the second wall 62 toward the left and right outer sides, and two through holes 63A through which the screws 92 are inserted are formed side by side.

  Also, as shown in FIGS. 12A and 12B, the cover member 60 is provided with a rib-like convex portion 64 on the inner side where the connecting pipe portion 43 is disposed. Specifically, the convex portions 64 are provided so as to protrude from the inner surfaces of the left and right second walls 62 toward the left and right inner sides. Thereby, the convex part 64 is provided so that the connection pipe part 43 may be pinched | interposed in the duct 40, specifically, the right and left both sides of the connection pipe part 43. Further, the convex portion 64 is provided so as to enter one of the valley portions 48B located at the upper end portion of the bellows portion 48 constituting the connection pipe portion 43 and to contact the inner surface (connection pipe portion 43) of the valley portion 48B. It has been. The rear end of the convex portion 64 is connected to the first wall 61. That is, the convex portion 64 is provided so as to protrude from the corner formed by the first wall 61 and the second wall 62 to the left and right inside.

  The cover member 60 is inserted with a screw 92 through a through hole 63A formed in the mounting portion 63 in a state in which the connecting pipe portion 43 is housed inside a recess formed by the first wall 61 and the second wall 62. By being fastened to the lower frame 24, it is fixed to the lower frame 24. Accordingly, the cover member 60 is provided so as to cover a part of the connecting pipe portion 43, specifically, the bellows portion 48, by the first wall 61 and the second wall 62.

  Further, the cover member 60 is fixed to the lower frame 24, thereby restricting the position of the connecting pipe portion 43. Specifically, when the connecting pipe portion 43 tries to move back and forth, the cover member 60 is brought into contact with the lower frame 24 and the first wall 61. The front and rear positions of the connecting pipe portion 43 are restricted. Further, when the connecting pipe portion 43 tries to move left and right, the cover member 60 comes into contact with the left and right second walls 62, specifically, the convex portions 64. 62 restricts the left and right positions of the connecting pipe portion 43.

  Further, the cover member 60 also restricts the position of the connecting pipe portion 43 by the convex portion 64 entering the valley portion 48 </ b> B of the bellows portion 48. Specifically, when the connecting pipe portion 43 is about to move up and down, the cover member 60 has an inner surface of the valley portion 48 </ b> B that abuts on the convex portion 64. Is regulated.

Here, the operation of the cover member 60 and the duct 40 when the seat back S2 is rotated with respect to the seat cushion S1 will be described.
When the seat back frame F2 (seat back S2) is rotated rearward from the posture shown in FIG. 10, the cover member 60 fixed to the lower frame 24 is also centered on the axis of the reclining mechanism RL as shown in FIG. And turn backward. Accordingly, the upper end portion of the duct 40 regulated by the lower frame 24 and the cover member 60 also tries to rotate together with the seat back frame F2 and the cover member 60. In the duct 40, since the left and right convex portions 64 are inserted into the valley portion 48B of the upper end portion of the bellows portion 48, and the upper end portion of the bellows portion 48 is held by the convex portion 64, the seat back frame F2 and the cover By rotating the member 60 rearward, the upper end portion of the bellows portion 48 is pushed down by the convex portion 64. As a result, the lower portion of the bellows portion 48 than the convex portion 64 is contracted, so that the seat back S2 can be satisfactorily rotated and brought down without the connection pipe portion 43 being gripped.

  On the other hand, when the seat back S2 is rotated forward from the posture shown in FIG. 13, the cover member 60 is rotated forward about the axis of the reclining mechanism RL as shown in FIG. Then, the upper end portion of the duct 40 also tries to rotate together with the seat back frame F2 and the cover member 60. At this time, in the duct 40, the upper end portion of the bellows portion 48 is held by the convex portion 64, so that when the seat back frame F <b> 2 and the cover member 60 are rotated forward, the upper end portion of the bellows portion 48 is the convex portion 64. Pulled up by. Thereby, the portion below the convex portion 64 of the bellows portion 48 extends, so that the seat back S <b> 2 can be rotated and raised without stretching the connecting pipe portion 43.

  According to the present embodiment described above, the first engagement portions 110 and 210 provided on the bracket 50 insert the first engagement portions 110 and 210 into the first engagement holes 12A and 12B of the pan frame 12. Since the first locking portions 112 and 212 are elastically deformed so that the first locking portions 112 and 212 can pass through the first engagement holes 12A and 12B, the bracket 50 and the pan frame 12 are attached with one touch. be able to. Thereby, the workability | operativity when attaching the air blower 30 to the seat frame F can be improved compared with the case where a bracket is attached to a pan frame with a tapping screw.

  In addition, since the first engagement portions 110 and 210 are provided on the bracket 50 by attaching the clips 100 and 200 to the bracket 50, the first engagement portions 110 and 210 are compared with the case where the first engagement portion is formed integrally with the bracket. The 1 engaging part 110,210 can be formed in a relatively free shape. Accordingly, for example, the first engagement portions 110 and 210 can be formed in a shape that can be more easily engaged with the first engagement holes 12A and 12B. Therefore, workability when attaching the blower 30 to the seat frame F is improved. Can be further improved.

  Further, when the second engaging portions 120 and 220 of the clips 100 and 200 insert the second engaging portions 120 and 220 into the second engaging holes 50A and 50B of the bracket 50, the second locking portions 122 and Since the second elastic deformation portions 123 and 223 that are elastically deformed so that 222 can pass through the second engagement holes 50A and 50B are provided, the clips 100 and 200 can be attached to the bracket 50 with one touch. Thereby, the first engaging portions 110 and 210 can be easily provided on the bracket 50.

  Further, since the attachment holes 12H are used as the first engagement holes 12A and 12B, it is not necessary to provide the first engagement holes 12A and 12B in the pan frame 12 separately from the attachment holes 12H. Thereby, the structure of the pan frame 12 can be simplified.

  Further, since the cover member 60 that covers the connection pipe portion 43 of the duct 40 is provided, the duct 40 can be protected by the cover member 60. Thereby, for example, it is possible to prevent the foot of the passenger in the rear seat from hitting the duct 40. Further, since the cover member 60 is fixed to the seat frame F and restricts the position of the connecting pipe portion 43, the movement of the duct 40 can be suppressed by the cover member 60.

  Further, since the movement of the duct 40 can be restricted by the cover member 60, it is not necessary to provide a member for regulating the movement of the duct 40 separately from the cover member 60, so that the number of parts of the vehicle seat S can be reduced. Further, if the cover member 60 is not provided, in order to restrict the movement of the duct 40, for example, it is necessary to fix the vicinity of the connecting pipe portion 43, which is an intermediate portion of the duct 40, to the lower frame 24 or the like. Since the movement of the duct 40 can be restricted by the member 60, the work of fixing the intermediate portion of the duct 40 is not necessary. Thereby, workability | operativity when assembling the vehicle seat S can be improved.

  In addition, since the cover member 60 is provided so as to cover the bellows portion 48 that is flexible and easily damaged than the other portion when the rear passenger's foot hits, etc., and is easy to move. Thus, the protection of the duct 40 and the movement of the duct 40 can be effectively suppressed.

  Moreover, since the cover member 60 has the convex part 64 which protrudes inward and contacts the connecting pipe part 43, the movement of the duct 40 can be further suppressed by the contact between the convex part 64 and the connecting pipe part 43. .

  Moreover, since the convex part 64 is provided so that the connection pipe part 43 may be pinched | interposed on the right and left sides of the connection pipe part 43, the right and left convex part 64 can suppress the movement to the left and right of the duct 40 effectively. .

  Further, since the left and right convex portions 64 are provided so as to enter the valley portion 48B of the bellows portion 48, the convex portion 64 enters the valley portion 48B while suppressing the movement of the duct 40 to the left and right. Further, the direction in which the peak portions 48A (the valley portions 48B) of the duct 40 are arranged, that is, the upward and downward movement can also be suppressed. Thereby, the movement of the duct 40 can be further suppressed.

  In addition, since the cover member 60 has a substantially U-shaped cross-sectional view having the first wall 61 and the pair of second walls 62, both the protection of the duct 40 and the suppression of the movement of the duct 40 are achieved while the cover member 60 has a simple configuration. Can be made.

  Moreover, since the cover member 60 is formed of a material harder than the connecting pipe portion 43, the duct 40 can be well protected by the cover member 60.

  Although the embodiment has been described above, the present invention is not limited to the embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of invention as follows. In the following description, the same components as those described above are denoted by the same reference numerals, description thereof will be omitted as appropriate, and differences from the above-described embodiment will be described in detail.

  For example, in the said embodiment, although the 1st engaging parts 110 and 210 were provided in the bracket 50, it is not limited to this, The 1st engaging part may be provided in the pan frame. For example, referring to FIG. 6B, the second engagement hole 12 </ b> A is provided in the pan frame 12, and the second engagement portion 110 and the second engagement hole 12 </ b> A projecting toward the pan frame 12 are provided. The first engagement portion 120 may be provided on the pan frame 12 by attaching the first clip 100 as an attachment member to the pan frame 12 by engagement. In this case, the second locking portion 112 of the second engaging portion 110 is locked to the pan frame 12. In this case, the first engagement portion 120 is provided so as to protrude toward the bracket 50, and the bracket 50 is provided with a first engagement hole 50 </ b> A for engaging the first engagement portion 120. It will be. When the first engagement portion 120 is engaged with the first engagement hole 50 </ b> A, the first engagement portion 122 is engaged with the bracket 50.

  In this case, the mounting hole 12H (see FIG. 8) formed in the pan frame 12 can be used as the second engagement hole 12A. According to this, since it is not necessary to provide the 2nd engagement hole 12A in the pan frame 12 separately from the attachment hole 12H, the structure of the pan frame 12 can be simplified. The first engagement hole and the second engagement hole may be holes provided in the pan frame separately from the attachment holes.

  Moreover, in the said embodiment, although the air blower 30 was attached to the bracket 50 with the tapping screw 91, it is not limited to this. For example, as shown to Fig.14 (a), the air blower 30 may be attached to the bracket 50 by the clip 300 as an attachment member. The clip 300 has a first engagement portion 310, a second engagement portion 320, and a flange portion 330. The first engagement portion 310 includes a first locking portion 312 and a first elastic deformation portion 313 that can bend elastically, and the second engagement portion 320 includes a second locking portion. Part 322 and a second elastic deformation part 323 that can bend elastically. The bracket 50 has three projecting portions 59 (see FIG. 14B) projecting toward the blower 30. Each projecting portion 59 is formed with a second engaging hole 50 </ b> C through which the second engaging portion 320 engages, and each of the attachment portions 36 to 38 of the blower device 30 has a second engaging hole. A third engagement hole 30 </ b> C that penetrates the second engagement portion 320 that is engaged with 50 </ b> C is formed.

  The air blower 30 engages the second engagement portion 320 of the clip 300 with the second engagement hole 50C of the bracket 50 and further engages with the third engagement holes 30C of the attachment portions 36 to 38. Thus, it is attached to the bracket 50. According to such a configuration, since the air blower 30 can be attached to the bracket 50 with the clip 300, for example, compared to a case where the air blower is attached to the bracket by fastening a tapping screw or the like, the air blower 30 is attached to the seat frame. Workability when attaching to F can be improved. Moreover, since a tapping screw or the like for attaching the blower to the bracket is not necessary, the number of parts of the vehicle seat S can be reduced. Further, the second engagement portion 320 of the clip 300 is engaged with the second engagement hole 50C of the bracket 50 and the third engagement hole 30C of the blower device 30 to attach the blower device 30 to the bracket 50. The protrusion 59 can be abutted against the blower 30. Thereby, since the air blower 30 becomes difficult to rattle, the attachment rigidity of the air blower 30 can be improved.

  As shown in FIG. 15A, the blower device 30 may be attached to the pan frame 12 together with the bracket 50 by a first engaging portion 310 provided on the pan frame 12. The first engagement portion 310 is provided by attaching a clip 400 as an attachment member to the pan frame 12. The clip 400 includes a first engagement portion 310, a second engagement portion 120, and a flange portion 130. Further, the bracket 50 includes three protrusions 59 (see FIG. 14B) that protrude toward the blower 30 and a first engagement provided on the bracket 50 to which the first engagement part 310 is engaged. Hole 50D. The first engagement holes 50 </ b> D are through-holes, and are formed one by one in the protruding portion 59. Further, the attachment portions 36 to 38 (see FIG. 14B) of the blower device 30 are respectively penetrated through the fourth engagement portions engaged with the first engagement portions 310 engaged with the first engagement holes 50D. An engagement hole 30D is formed.

  As shown in FIG. 15 (b), the blower device 30 further engages the first engagement portion 310 of the pan frame 12 with the first engagement hole 50 </ b> D of the bracket 50, and then attaches the attachment portions 36 to 38. By being engaged with the fourth engagement hole 30 </ b> D, the bracket 50 is attached to the pan frame 12. According to such a configuration, the bracket 50 and the air blower 30 can be attached to the pan frame 12 by engaging the bracket 50 and the air blower 30 with the first engagement portion 310, and thus, for example, a tapping screw or the like Compared with the case where it attaches by fastening of this, workability | operativity when attaching the air blower 30 to the seat frame F can be improved. Moreover, since a tapping screw or the like for attaching the blower is not necessary, the number of parts of the vehicle seat S can be reduced. Further, the bracket 50 and the blower 30 are attached to the pan frame 12 by engaging the first engagement portion 310 of the pan frame 12 with the first engagement hole 50D of the bracket 50 and the fourth engagement hole 30D of the blower 30. Thus, the three protrusions 59 can be abutted against the blower 30. Thereby, since the air blower 30 becomes difficult to rattle, the attachment rigidity of the air blower 30 can be improved.

  Moreover, in the said embodiment, although the 1st engaging parts 110 and 210 were provided by attaching the clips 100 and 200 as an attachment member to the bracket 50, it is not limited to this. For example, as illustrated in FIG. 16A, the first engagement portion 50 </ b> E may be integrally formed with the bracket 50 as a part of the resin bracket 50. Further, as shown in FIG. 16B, the first engaging portion 12 </ b> E may be integrally formed with the pan frame 12 as a part of the pan frame 12. The first engaging portion 12E can be formed, for example, by cutting and raising a part of the pan frame 12 made of a metal plate and bending the tip portion. According to such a configuration, the number of parts of the vehicle seat S can be reduced.

  Moreover, in the said embodiment, although the three 1st engaging parts 110 and 210 were provided by two types of attachment members, specifically, the 1st clip 100 and the 2nd clip 200, it is not limited to this. For example, the three first engaging portions may be provided by one type of attachment member. The three first engaging portions may be provided by different types of attachment members. In addition, the number of 1st engaging parts is arbitrary.

  Moreover, in the said embodiment, although the connection pipe part 43 of the duct 40 had the bellows part 48 as a flexible part, it is not limited to this. For example, the connection pipe part may be configured not to have a bellows-like part (see the connection pipe part 143 in FIG. 18). In addition, the configuration of the flexible portion is not particularly limited as long as it has flexibility. Moreover, the connection pipe part may have a configuration without flexibility.

  Moreover, in the said embodiment, although the convex part 64 of the cover member 60 was provided so that it might enter into the trough part 48B of the bellows part 48, it is not limited to this. For example, as illustrated in FIG. 17A, the cover member 60 includes a convex portion 65 that protrudes toward the connecting tube portion 43 on both the left and right sides of the connecting tube portion 143, and the connecting tube portion 143 includes the convex portion 65. The structure which has the recessed part 43A which engages may be sufficient. Further, as shown in FIG. 17B, the connecting pipe portion 143 has convex portions 43B that protrude outward on the left and right sides toward the second wall 62 of the cover member 60 on both left and right sides of the connecting pipe portion 143. The cover member 60 may be configured to have a concave portion 66 with which the convex portion 43B is engaged. In addition, although the recessed part 66 is a hole penetrated to the left and right, it may be a hole with a bottom. According to such a configuration, the movement of the duct 40 can be further suppressed by the engagement between the convex portion and the concave portion.

  In the form shown in FIG. 17A, the recess 43A may have a groove shape extending in the vertical direction in which the connecting pipe portion 143 of the duct 40 extends, as shown in FIG. According to such a configuration, the duct 40 and the cover member 60 can be moved relative to each other in the vertical direction. Therefore, in the configuration in which one of the seat cushion and the seat back is movable with respect to the other, the seat cushion and the seat back are Can move well. Specifically, for example, in a configuration in which the seat back is rotatable with respect to the rear portion of the seat cushion, even if the cover member 60 is rotated up and down with respect to the duct 40 by rotating the seat back, the convex portion Since the portion 65 can move up and down in the recess 43A, the seat back can be rotated well. In addition, it is more preferable that the direction in which the concave portion 43 </ b> A extends is along the locus of rotation of the convex portion 65. A similar configuration can be employed for the recess 66 in FIG.

  For example, as shown in FIG. 19, the duct 40 and the cover member 60 are not configured such that the convex portion of the cover member enters the valley portion of the bellows portion or engages with the concave portion of the connecting pipe portion. The configuration may be such that the portion 67 only abuts on the left and right flat side walls of the connecting pipe portion 143. Even with such a configuration, the duct 40 and the cover member 60 can move relative to each other in the direction in which the duct 40 extends, so that the seat cushion and the seat back can be moved favorably. In addition, the number of convex parts is arbitrary and may differ on right and left.

  Moreover, in the said embodiment, although the duct 40 was the structure which consists of 3 components which have the cushion pipe part 41, the back pipe part 42, and the connection pipe part 43 which connects these, it is not limited to this. For example, the duct may have a single-component configuration in which the cushion tube portion 41, the back tube portion 42, and the connection tube portion 43 of the above-described embodiment are integrally formed.

  Moreover, in the said embodiment, although the cover member 60 was provided so that a part of connection pipe part 43, specifically, the bellows part 48 as a flexible part, it was provided, it is not limited to this. For example, the cover member may be provided so as to cover the entire connection pipe portion. Moreover, the structure which covers only a part of flexible part may be sufficient as a cover member instead of the whole flexible part.

  Moreover, in the said embodiment, although the cover member 60 was a member for exclusive use which covers the connection pipe part 43 of the duct 40, it is not limited to this, A function other than the function that a cover member covers the connection pipe part of a duct The member which has this may be sufficient. Specifically, the cover member may be a member having a function of covering a joint portion between the cushion side frame 11 and the connection pipe 13 (see FIG. 3), for example, in addition to the function of covering the connection pipe portion of the duct. Good. In other words, the cover member that covers the joint portion between the cushion side frame 11 and the connecting pipe 13 may be a member that has a function of covering the connecting pipe portion of the duct.

  Moreover, in the said embodiment, although the cushion side frame 11 was illustrated as a side frame and the air blower 30 was attached to the pan frame 12 which connects the left and right cushion side frames 11, it is not limited to this. For example, the side frame may be a side frame of the seat back, and the blower may be attached to a pan frame that connects the left and right side frames of the seat back.

  Moreover, in the said embodiment, although the pan frame 12 was illustrated as a plate-shaped part, it is not limited to this. For example, the plate-like portion may be a plate-like member attached to the pan frame 12 (see FIG. 3). Further, for example, the plate-like portion may be a plate-like member attached to a seat spring (see FIG. 3, reference numerals omitted) that is spanned between the pan frame 12 and the connecting pipe 13.

  Moreover, although the sirocco fan was illustrated as the air blower 30 in the said embodiment, it is not limited to this, For example, a propeller fan, a turbo fan, etc. may be sufficient. 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 30, it is not limited to this, For example, it is comprised so that air may be suck | inhaled by the action | operation of an air blower. May be. Moreover, the air blower may be capable of switching between air blowing and suction, for example, by switching the rotation direction of the blades.

  Moreover, in the said embodiment, although vehicle seat S mounted in a motor vehicle was illustrated as a vehicle seat, it is not limited to this, Vehicles mounted in vehicles other than a motor vehicle, for example, a rail vehicle, a ship, an aircraft, etc. It may be a sheet for use.

  Moreover, you may implement combining each element demonstrated by above-described embodiment and modification arbitrarily.

DESCRIPTION OF SYMBOLS 30 Air blower 40 Duct 43 Connection pipe part 48 Bellows part 48A Mountain part 48B Valley part 60 Cover member 61 1st wall 62 2nd wall 64 Convex part A1 1st ventilation path A2 2nd ventilation path F Seat frame S Vehicle seat S1 Seat cushion S2 Seat back

Claims (9)

A seat cushion having a first air passage;
A seat back having a second air passage;
A blower;
A duct for communicating the first air passage and the second air passage with the blower;
A seat frame constituting a skeleton of the seat cushion and the seat back,
The duct has a connecting pipe portion arranged so as to be bridged between the seat cushion and the seat back,
The vehicle seat, further comprising a cover member that covers at least a part of the connection pipe portion and that is fixed to the seat frame to restrict a position of the connection pipe portion. The connecting pipe portion has a flexible portion having flexibility,
The vehicle seat according to claim 1, wherein the cover member is provided so as to cover at least a part of the flexible portion.   3. The vehicle seat according to claim 1, wherein the cover member has a convex portion that protrudes toward an inner side where the connection pipe portion is disposed and contacts the connection pipe portion. 4.   The vehicle seat according to claim 3, wherein the convex part is provided so as to sandwich the connecting pipe part on both right and left sides of the connecting pipe part. The connecting pipe portion has a bellows portion in which peaks and troughs are alternately formed,
The vehicle seat according to claim 4, wherein the convex portion is provided so as to enter a valley portion of the bellows portion. One of the cover member and the connecting pipe part has a convex part protruding toward the other on both the left and right sides of the connecting pipe part,
3. The vehicle seat according to claim 1, wherein the other of the cover member and the connection pipe portion has a concave portion with which the convex portion is engaged.   The vehicle seat according to claim 6, wherein the recess has a groove shape extending along a direction in which the duct extends.   The cover member includes a first wall disposed so as to sandwich the connecting pipe portion with the seat frame, and a pair of second walls extending from left and right ends of the first wall toward the seat frame. The vehicle seat according to any one of claims 1 to 7, wherein the vehicle seat is provided.   The vehicle seat according to any one of claims 1 to 8, wherein the cover member is formed of a material harder than the connecting pipe portion.

Images