Vehicle seat and method for manufacturing the same

Abstract

To arrange a vibration device and an airbag on a surface of a seat pad in a vehicle seat.SOLUTION: A vehicle seat 1 includes: a frame 11; a pad 12 supported by the frame; at least one vibration device 7 disposed on a front side of the pad; and at least one airbag 8 disposed on the front side of the pad. The airbag and the vibration device have portions overlapping with each other when viewed in a thickness direction of the pad.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a vehicle seat and a manufacturing method thereof. [Background technology]

[0002] Patent Document 1 discloses a vehicle seat having a vibrating member (vibration device) and an air bag. The vibrating member is provided on the surface (back surface) opposite to the surface (front surface) that supports the occupant of a seat pad provided inside the seat body. The air bag is provided on the surface of the seat pad that supports the occupant so as to face the vibrating member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-070075 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the air bags and the vibration device are arranged on the surface of the seat pad, there is a risk that the air bags and the vibration device will be arranged in a scattered manner. Since the surface area of ​​the seat pad is limited, it is difficult to arrange the air bags and the vibration device on the surface of the seat pad.

[0005] In view of the above background, an object of the present invention is to provide a vehicle seat in which a vibration device and an air bag are disposed on a surface of a seat pad. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a vehicle seat (1) comprising a frame (11), a pad (12) supported by the frame, at least one vibrating device (7) arranged on an upper side of the pad, and at least one air bag (8) arranged on the upper side of the pad, wherein the air bag and the vibrating device overlap each other when viewed in the thickness direction of the pad.

[0007] According to this aspect, the vibration device and the air bag are arranged so as to be closely spaced from each other when viewed in the thickness direction of the pad, and therefore the air bag and the vibration device can be arranged on the surface of the pad.

[0008] In the above aspect, the pad has at least one first recess (41) recessed from the front surface of the pad to the back side to accommodate the vibration device, and the air bag may be positioned on the front side of the pad relative to the vibration device.

[0009] According to this aspect, the vibration device is unlikely to come into contact with the occupant, so the foreign body sensation felt by the occupant is reduced.

[0010] In the above aspect, the air bladder may be fixed to the pad by a fixing member (43).

[0011] According to this aspect, the air bag is fixed to the pad.

[0012] In the above aspect, at least one of the air bags may have two air bags arranged at a distance from each other, a spacer (44) may be arranged between the two air bags, and the vibration device may overlap with the spacer and the two vibration devices when viewed in the thickness direction of the pad.

[0013] According to this embodiment, the spacer fills the space between the two air bags, so that the vibration of the vibration device is easily transmitted to the occupant.

[0014] In the above aspect, each of the multiple air bags may expand when a fluid is supplied thereto and contract when the fluid is discharged therefrom, and the surface of the spacer may be flush with the surface of the contracting air bag.

[0015] According to this aspect, the step between the spacer and the air bag is reduced, and the foreign body sensation felt by the occupant is further reduced.

[0016] In the above aspect, the vehicle seat further has an air blower (9), the air blower having an air blower main body (31) and a duct (32) connected to the air blower main body, the pad further has an air vent (34) penetrating in the thickness direction and connected to the duct, and an air vent groove (35) connected to the air vent, recessed from the front surface of the pad to the back side and extending along the surface direction of the pad, and at least one of the first recesses may be connected to the air vent groove.

[0017] According to this aspect, the vibration devices and the ventilation grooves are arranged so as to be closely spaced from each other when viewed in the thickness direction of the pad, so that in addition to the air bags and the vibration devices, the ventilation grooves can also be arranged on the surface of the pad.

[0018] In the above aspect, the width of the ventilation groove may be narrower than the width of the first recess.

[0019] According to this aspect, when the vibration device is housed in the first recess, the vibration device blocks a part of the opening of the ventilation groove, thereby preventing air passing through the ventilation groove from leaking out of the first recess.

[0020] In the above aspect, a cover pad (46) is arranged on the front side of the pad, the cover pad is arranged so as to cover the ventilation groove, and the cover pad may have a plurality of through holes (48) that overlap the ventilation groove when viewed from the thickness direction of the pad.

[0021] According to this aspect, the cover pad cooperates with the pad to form a flow path for air sent out from the blower main body.

[0022] In the above aspect, the cover pad may have a plurality of second recesses (51) recessed from the back surface of the cover pad to the front surface, and each of the two air bags may be housed in one of the second recesses (51).

[0023] According to this aspect, the air bags are restrained from moving in the planar direction of the pad.

[0024] In order to solve the above problems, the present invention provides a method for manufacturing a vehicle seat (1), the vehicle seat having a frame (11), a pad (12) supported by the frame, at least one vibrating device (7) arranged on an upper side of the pad, two air bags (8) arranged on the upper side of the pad at a distance from each other, a spacer (44) arranged between the two air bags, and a fixing member (43) for fixing each of the two air bags to the pad, the pad having at least one first recess (41) recessed from the upper surface of the pad to the rear side, the method comprising a first step of accommodating the vibrating device in the first recess, a second step of arranging the fixing member on the upper side of the pad, a third step of fixing each of the two air bags to the fixing member so as to overlap with the vibrating device when viewed from the thickness direction of the pad, and a fourth step of arranging the spacer between the two air bags.

[0025] According to this aspect, a vehicle seat is manufactured in which the vibration device and the air bag are disposed on the surface of the pad. Effect of the Invention

[0026] In order to solve the above problems, the present invention provides a vehicle seat (1) comprising a frame (11), a pad (12) supported by the frame, at least one vibrating device (7) arranged on an upper side of the pad, and at least one air bag (8) arranged on the upper side of the pad, wherein the air bag and the vibrating device overlap each other when viewed in the thickness direction of the pad.

[0027] According to this aspect, the vibration device and the air bag overlap each other when viewed in the thickness direction of the pad, and are therefore arranged to fit within the surface of the pad.

[0028] In the above aspect, the pad has at least one first recess (41) recessed from the front surface of the pad to the back side to accommodate the vibration device, and the air bag may be positioned on the front side of the pad relative to the vibration device.

[0029] According to this aspect, the vibration device is unlikely to come into contact with the occupant, so the foreign body sensation felt by the occupant is reduced.

[0030] In the above aspect, the air bladder may be fixed to the pad by a fixing member (43).

[0031] According to this aspect, the air bag is fixed to the pad.

[0032] In the above aspect, at least one of the air bags may have two air bags arranged at a distance from each other, a spacer (44) may be arranged between the two air bags, and the vibration device may overlap with the spacer and the two vibration devices when viewed in the thickness direction of the pad.

[0033] According to this aspect, the spacer makes it more difficult for the vibration device to come into contact with the occupant, so that the foreign body sensation felt by the occupant is further reduced.

[0034] In the above aspect, each of the multiple air bags may expand when a fluid is supplied thereto and contract when the fluid is discharged therefrom, and the surface of the spacer may be flush with the surface of the contracting air bag.

[0035] According to this aspect, the step between the spacer and the air bag is reduced, and the foreign body sensation felt by the occupant is further reduced.

[0036] In the above aspect, the vehicle seat further has an air blower (9), the air blower having an air blower main body (31) and a duct (32) connected to the air blower main body, the pad further has an air vent (34) penetrating in the thickness direction and connected to the duct, and an air vent groove (35) connected to the air vent, recessed from the front surface of the pad to the back side and extending along the surface direction of the pad, and at least one of the first recesses may be connected to the air vent groove.

[0037] According to this aspect, when the vibration device is housed in the first recess, the vibration device blocks the opening of the ventilation groove, thereby preventing air passing through the ventilation groove from leaking out of the first recess.

[0038] In the above aspect, the width of the ventilation groove may be narrower than the width of the first recess.

[0039] According to this embodiment, air passing through the ventilation groove is prevented from leaking out from the first recess.

[0040] In the above aspect, a cover pad may be disposed on the front side of the pad, and the cover pad may cover the two air bags and the spacer.

[0041] According to this aspect, the gap between the air bags and the spacers and the pad can be filled, thereby further reducing the foreign body sensation felt by the occupant.

[0042] In the above aspect, the cover pad may have a plurality of second recesses (51) recessed from the back surface of the cover pad to the front surface, and each of the two air bags may be housed in one of the second recesses (51).

[0043] According to this aspect, the air bags are restrained from moving in the planar direction of the pad.

[0044] In order to solve the above problems, the present invention provides a method for manufacturing a vehicle seat (1), the vehicle seat having a frame (11), a pad (12) supported by the frame, at least one vibrating device (7) arranged on an upper side of the pad, two air bags (8) arranged on the upper side of the pad at a distance from each other, a spacer (44) arranged between the two air bags, and a fixing member (43) for fixing each of the two air bags to the pad, the pad having at least one first recess (41) recessed from the upper surface of the pad to the rear side, the method comprising a first step of accommodating the vibrating device in the first recess, a second step of arranging the fixing member on the upper side of the pad, a third step of fixing each of the two air bags to the fixing member so as to overlap with the vibrating device when viewed from the thickness direction of the pad, and a fourth step of arranging the spacer between the two air bags.

[0045] According to this aspect, the vibration device and the air bag overlap each other when viewed in the thickness direction of the pad, and are therefore arranged to fit within the surface of the pad. [Brief description of the drawings]

[0046] [Figure 1] FIG. 1 is a perspective view of a seat according to an embodiment; [Diagram 2] Front view of seat back frame [Diagram 3] A cross-sectional view showing a main part of a seat back. [Figure 4] A cross-sectional view showing a main part of a seat back. [Diagram 5] Front view of seat back pad [Figure 6]A front view showing the main part of the seat back [Figure 7] FIG. 11 is a cross-sectional view showing a main portion of a modified example of the seat back; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0047] An example in which the vehicle seat of the present invention is applied to a seat 1 mounted in a vehicle such as an automobile will be described below with reference to the drawings. In the following description, the traveling direction of the vehicle is defined as the front-rear direction, and the left-right and up-down directions are defined.

[0048] 1, a seat 1 is provided facing forward on a floor 2 that defines the bottom of the passenger compartment of a vehicle. In this embodiment, the seat 1 constitutes a front row seat.

[0049] The seat 1 has a seat cushion 4 connected to a floor 2, a seat back 5 connected to a rear part of the seat cushion 4, and a headrest 6 provided on the upper side of the seat back 5. The seat cushion 4 supports the buttocks and thighs of the occupant from below. The seat back 5 supports the waist and back of the occupant from behind.

[0050] The seat 1 further includes a plurality of vibration devices 7 for applying vibrations to the occupant, a plurality of air bags 8, and an air blower 9. Each air bag 8 expands when fluid is supplied thereto, and contracts when the fluid is discharged therefrom. The air blower 9 blows air towards the occupant. In another embodiment, the seat 1 may include an air intake device that draws in air towards the occupant instead of the air blower 9.

[0051] 2, the seat back 5 has a seat back frame 11 forming a skeleton, and a seat back pad 12 supported by the seat back frame 11. The seat back 5 further has a covering material 13 that covers the seat back pad 12 and the seat back frame 11. Each of the multiple vibration devices 7 and each of the multiple air bags 8 are disposed between the seat back pad 12 and the covering material 13.

[0052] 2, the seatback frame 11 may have a known configuration including a pair of left and right seatback side members 14 extending vertically, an upper member 16 joined to upper ends of the left and right seatback side members 14, a lower member 18 extending in the left-right direction and joined to lower ends of the left and right seatback side members 14, and a middle member 20 extending in the left-right direction and joined to the left and right seatback side members 14. The middle member 20 may be disposed between the upper member 16 and the lower member 18. The seatback frame 11 may be made of, for example, a metal.

[0053] The seat back 5 further has a pressure-receiving member 21 supported by the seat back frame 11. The pressure-receiving member 21 may have a known configuration having, for example, a metal wire 22 suspended across the seat back frame 11 and a plate-shaped member 23 supported by the wire 22 and with its surface facing forward and backward. In this embodiment, an upper end of the wire 22 is joined to the middle member 20, and a lower end of the wire 22 is joined to the lower member 18. The plate-shaped member 23 is joined to a front portion of the wire 22. The plate-shaped member 23 may be formed from, for example, a resin material.

[0054] 3 and 4, the seatback pad 12 is disposed on the front side of the pressure-receiving member 21, i.e., in front of the occupant. A back surface of the seatback pad 12, i.e., a part of the rear surface facing away from the occupant, may abut against the front surface of the plate-like member 23. As a result, a load from the front applied to the seatback pad 12 via the covering material 13 is transmitted to the seatback frame 11 via the pressure-receiving member 21. The seatback pad 12 may be formed from a foamed resin such as urethane foam.

[0055] 5, the seat back pad 12 may have a plurality of hanging grooves 26 for hanging the upholstery material 13. Each of the plurality of hanging grooves 26 is recessed rearward from the front surface of the seat back pad 12 and extends along the surface direction of the seat back pad 12. In this embodiment, the seat back pad 12 has a pair of left and right vertical hanging grooves 28 extending in the front-rear direction, and horizontal hanging grooves 29 extending in the left-right direction and intersecting with each vertical hanging groove 28.

[0056] Each of the multiple hanging grooves 26 may be provided with multiple clip portions (not shown) for holding the cover material 13 to the seat back 5. Each clip portion may have a known configuration, for example, including a substrate embedded in the seat back pad 12 and a pair of locking pieces protruding from the substrate into each hanging groove 26 from the bottom of the substrate. The cover material 13 is held to the seat back 5 by multiple locked portions provided on the cover material 13 being locked to the corresponding locking pieces.

[0057] 2, the air blower 9 has an air blower body 31 supported by the seat back frame 11, and a duct 32 connected to the air blower body 31. The air blower body 31 is disposed between the upper member 16 and the middle member 20. The air blower body 31 may be coupled to, for example, a bracket 33 coupled to at least one of the upper member 16 and the middle member 20. The air blower body 31 may be, for example, a centrifugal fan or a sirocco fan.

[0058] A heating source or a cooling source may be provided on either the air inlet side or the air outlet side of the air blower body 31. The heating source may be, for example, a heat sink or a PTC heater (Positive Temperature Coefficient heater). The cooling source may be, for example, a Peltier element. In this way, the air blower 9 may blow hot air or cold air from the side of the seated person.

[0059] The duct 32 may be formed to have a rectangular cross section. One end of the duct 32 is connected to the blower body 31. The other end of the duct 32 passes between the upper member 16 and the middle member 20 from the rear to the front. The opening of the other end of the duct 32 is disposed so as to face forward.

[0060] As shown in Fig. 5, the seat back pad 12 further has an air vent 34 penetrating in the front-rear direction and an air groove 35 connected to the air vent 34. In this embodiment, the air vent 34 is formed in a rectangular shape when viewed in the up-down direction. The air vent 34 is provided below the horizontal hanging groove 29 and to the left of the right vertical hanging groove 28. A duct 32 is connected to the air vent 34. More specifically, the other end of the duct 32 may be inserted into the air vent 34.

[0061] As shown in FIG. 3 to FIG. 5, the ventilation groove 35 is recessed rearward from the surface of the seat back pad 12 and extends along the surface direction of the seat back pad 12. The ventilation groove 35 is connected to the ventilation hole 34. Specifically, the ventilation hole 34 is formed in a part of the bottom of the ventilation groove 35. The ventilation groove 35 has a plurality of lateral grooves 36 extending in the left-right direction and a plurality of vertical grooves 37 extending in the up-down direction and connecting the plurality of lateral grooves 36. In this embodiment, five lateral grooves 36 are provided spaced apart from each other in the up-down direction. Each of the plurality of vertical grooves 37 is provided so as to connect the lateral grooves 36 adjacent to each other. Each vertical groove 37 is provided in the left-right center of the lateral groove 36. The ventilation hole 34 is formed in the right end of the uppermost lateral groove 36.

[0062] As shown in FIG. 6, each of the vibration devices 7 has a rectangular parallelepiped shape. Each vibration device 7 may have a known configuration including, for example, a coil, a magnet, and a yoke. The magnetic field generated by the coil changes as the direction of the current flowing through the coil changes periodically. As a result, the yoke to which the magnet is connected vibrates in response to the change in the magnetic field. The vibration devices 7 are preferably arranged so that the direction of their vibration is perpendicular to the front surface of the seat back pad 12, but may also be arranged so that the direction of their vibration is parallel to the front surface of the seat back pad 12.

[0063] Each of the multiple vibration devices 7 is disposed on the front side of the seat back pad 12. As shown in Figs. 3 to 5, the seat back pad 12 has multiple first recesses 41 for accommodating each of the multiple vibration devices 7. Each of the multiple first recesses 41 is a bottomed recess recessed rearward from the front surface of the seat back pad 12. Each of the first recesses 41 is formed in a rectangular shape when viewed from the front. Each of the first recesses 41 makes it difficult for the vibration devices 7 to come into contact with the occupant, thereby reducing the foreign body sensation felt by the occupant.

[0064] As shown in FIG. 3, each of the first recesses 41 is connected to the ventilation groove 35. At this time, the width of the ventilation groove 35 is narrower than the width of the first recess 41. Each of the first recesses 41 is disposed forward of the ventilation groove 35. That is, the bottom surface of each of the first recesses 41 is forward of the bottom surface of the ventilation groove 35. At this time, a part of the opening of the ventilation groove 35 is provided on the bottom surface of the first recess 41. In this embodiment, each of the first recesses 41 is connected to each of the three lateral grooves 36 except for the uppermost lateral groove 36 and the lowermost lateral groove 36. More specifically, each of the first recesses 41 is provided on each of the left and right ends of the three lateral grooves 36. When each vibration device 7 is accommodated in the corresponding first recess 41, the vibration device 7 blocks a part of the opening of the ventilation groove 35 provided on the bottom surface of the first recess 41. Therefore, the air passing through the ventilation groove 35 is suppressed from leaking out of the first recess 41.

[0065] 3, 4, and 6, each of the multiple air bags 8 is disposed on the front side of the seat back pad 12. More specifically, each of the multiple air bags 8 is disposed on the front side of each of the vibration devices 7. In this embodiment, each air bag 8 is disposed on the front side of the seat back pad 12 between vertically adjacent lateral grooves 36. That is, the multiple air bags 8 are disposed on the seat back pad 12 at a distance from each other.

[0066] When each vibration device 7 is housed in the corresponding first recess 41, the vibration device 7 is disposed between two air bags 8 adjacent to each other vertically when viewed from the front-rear direction. At this time, the air bags 8 and the vibration devices 7 overlap each other when viewed from the front-rear direction. Specifically, when viewed from the front, the upper end of each vibration device 7 overlaps the lower end of the upper air bag 8. Also, the lower end of each vibration device 7 overlaps the lower air bag 8.

[0067] Each of the plurality of air bags 8 is fixed to the seat back pad 12 by a fixing member. In this embodiment, the fixing member is a plurality of double-sided tapes 43. Each double-sided tape 43 is disposed on the front surface of the seat back pad 12. Specifically, one surface of each double-sided tape 43 is adhered to the front surface of the seat back pad 12 between the lateral grooves 36 adjacent to each other vertically. The rear surface of each air bag 8 is adhered to the other surface of each double-sided tape 43. As a result, each air bag 8 is fixed to the seat back pad 12. A part of the plurality of double-sided tapes 43 may extend in the vertical direction. At this time, the upper end of each vibration device 7 may be adhered to the lower end of the upper double-sided tape 43, and the lower end of each vibration device 7 may be adhered to the upper end of the lower double-sided tape 43. As a result, each vibration device 7 is more stably fixed to the seat back pad 12.

[0068] A spacer 44 is disposed between each pair of air bags 8 adjacent to each other vertically. That is, when viewed from the front-rear direction, each vibration device 7 overlaps with each of the air bags 8 adjacent to each other vertically and the spacer 44. The spacer 44 is formed in a plate shape with a surface facing the front-rear direction. Each of the plurality of spacers 44 may be disposed in the center of the corresponding vibration device 7 in the vertical direction. As a result, the spacer 44 fills the space between the air bags 8 adjacent to each other vertically, so that the vibration of the vibration device 7 is easily transmitted to the occupant. The front surface of the spacer 44 may be disposed on the same plane as the front surface of the contracted air bag 8. As a result, the step between the spacer 44 and the air bag 8 is suppressed. Therefore, the foreign body sensation felt by the occupant is further reduced. Each spacer 44 may be formed of the same foam resin as the seat back pad 12, for example, or may be formed of a foam resin softer than the seat back pad 12. Each spacer 44 may be fixed to the corresponding vibration device 7 by a double-sided tape 43. In addition, in another embodiment, the multiple spacers 44 may extend in the left-right direction along the corresponding lateral grooves 36. In this case, the left and right ends of each spacer 44 may overlap the left and right vibration devices 7 when viewed from the front-rear direction.

[0069] A cover pad 46 is disposed on the front side of the seat back pad 12. The cover pad 46 is disposed between the seat back pad 12 and the upholstery material 13. The cover pad 46 covers the ventilation groove 35. The cover pad 46 is formed in a plate shape with a surface facing the front-rear direction. The cover pad 46 may be formed from, for example, the same foamed resin as the seat back pad 12, or may be formed from a foamed resin harder than the seat back pad 12. The cover pad 46 can fill in the gaps between the air bags 8 and the spacers 44 and the seat back pad 12. This further reduces the foreign body sensation felt by the occupant.

[0070] The cover pad 46 has a plurality of through holes 48 (see FIG. 6) penetrating in the front-rear direction. Each of the plurality of through holes 48 overlaps with the ventilation groove 35 when viewed from the front-rear direction. Specifically, each through hole 48 overlaps with the left and right ends of each lateral groove 36. Specifically, each through hole 48 is provided at a position that does not overlap with each first recess 41 when viewed from the front-rear direction. Each through hole 48 allows the blower device main body 31 to blow air toward the front side (occupant side) of the seat back pad 12 through the duct 32, the ventilation hole 34, the ventilation groove 35, and the plurality of through holes 48. Therefore, the cover pad 46 cooperates with the seat back pad 12 to form a flow path for the air sent out from the blower device main body 31.

[0071] The cover pad 46 may have at least one protrusion 49 protruding rearward from the rear surface of the cover pad 46. The protrusion 49 extends along the surface direction of the cover pad 46. Specifically, the protrusion 49 is provided so as to overlap a part of the ventilation groove 35 when viewed from the front-rear direction. The protrusion 49 is provided so as to avoid each of the through holes 48. Furthermore, the protrusion 49 is provided at a position that does not overlap each of the first recesses 41 when viewed from the front-rear direction.

[0072] When the cover pad 46 is placed over the seat back pad 12, the protrusions 49 provided on the cover pad 46 may enter the ventilation grooves 35. At this time, the upper and lower side surfaces of the protrusions 49 that enter each of the multiple lateral grooves 36 may abut against the upper and lower side surfaces of the lateral grooves 36. Also, the left and right side surfaces of the protrusions 49 that enter each of the multiple vertical grooves 37 may abut against the left and right side surfaces of the vertical grooves 37. This allows the protrusions 49 to block the openings at the front ends of the ventilation grooves 35. Therefore, the air passing through the ventilation grooves 35 is sent out to the occupant side from each of the through holes 48 provided in the cover pad 46. The convex surface of the protrusions 49 facing rearward may be disposed on the same plane as the bottom surface of the first recess 41.

[0073] In another embodiment, the seat back 5 may have a plate-like member disposed between the seat back pad 12 and the cover pad 46. The ventilation groove 35 may be formed in the plate-like member. In this case, the ventilation groove 35 may be formed so as to penetrate the plate-like member in the thickness direction and extend along the surface direction of the plate-like member. In this case, the plate-like member may be provided with a first recess 41 for accommodating the vibration device 7. By changing the plate-like member, the shape of the ventilation groove 35 and the arrangement of each vibration device 7 can be changed. Therefore, the degree of freedom in the shape of the ventilation groove 35 and the arrangement of each vibration device 7 is increased.

[0074] A method for manufacturing the seat back 5 configured as above will be described.

[0075] First, the seat back pad 12 is prepared. The seat back pad 12 may be formed by injection foam molding or extrusion foam molding of a foam resin such as urethane foam. At this time, the seat back pad 12 may be formed with a plurality of hanging grooves 26, a plurality of first recesses 41, ventilation holes 34, and ventilation grooves 35. Each of the plurality of hanging grooves 26 may be provided with a plurality of clip portions.

[0076] Next, each of the multiple vibration devices 7 is housed in the corresponding first recess 41 (first step). Next, each of the multiple double-sided tapes 43 is arranged on the front surface of the seat back pad 12 (second step). Specifically, one surface of each double-sided tape 43 is adhered to the front surface of the seat back pad 12 between the lateral grooves 36 adjacent to each other vertically. At this time, the upper end of each vibration device 7 may be adhered to the lower end of the upper double-sided tape 43, and the lower end of each vibration device 7 may be adhered to the upper end of the lower double-sided tape 43.

[0077] Next, each of the multiple air bags 8 is fixed to double-sided tape 43 (third step). Specifically, the rear surface of each air bag 8 is adhered to the other surface of each double-sided tape 43. Each air bag 8 is disposed on the front surface of the seat back pad 12 between vertically adjacent lateral grooves 36. At this time, each vibration device 7 overlaps with each of the vertically adjacent air bags 8 when viewed from the front-rear direction.

[0078] Next, each of the multiple spacers 44 is disposed between the air bags 8 adjacent to each other in the vertical direction (fourth step). Specifically, each spacer 44 is disposed in front of the corresponding vibration device 7. Next, the cover pad 46 is placed over the front of the seat back pad 12. At this time, it is preferable that the protrusion 49 provided on the cover pad 46 is inserted into the ventilation groove 35.

[0079] Next, the blower device main body 31 of the blower device 9 is attached to the seat back frame 11. The blower device main body 31 may be attached to a bracket 33 coupled to at least one of the upper member 16 and the middle member 20, for example. The duct 32 connected to the blower device main body 31 passes between the upper member 16 and the middle member 20 from the rear to the front. The opening at the other end of the duct 32 is arranged to face forward.

[0080] Next, the seat back pad 12 is placed on the front of the seat back frame 11. At this time, a part of the rear surface of the seat back pad 12 may abut against the front surface of the pressure-receiving member 21. In addition, the other end of the duct 32 of the blower 9 may be inserted into the ventilation hole 34 provided in the seat back pad 12.

[0081] Next, the cover material 13 is placed on the front of the seat back pad 12. The cover material 13 is held on the seat back pad 12 by a locking portion provided on the cover material 13 being locked with a locking portion of a clip portion provided in the hanging groove 26. In this manner, the seat back 5 having the vibration devices 7 and the air bags 8 arranged on the surface thereof is manufactured.

[0082] The vibration devices 7 and the air bags 8 overlap each other when viewed from the front, and are therefore arranged so as to be closely spaced when viewed from the front-rear direction. Therefore, the vibration devices 7 and the air bags 8 can be arranged on the surface of the seat back pad 12. Also, since each of the multiple first recesses 41 is connected to the ventilation groove 35, the vibration devices 7 and the ventilation groove 35 are arranged so as to be closely spaced when viewed from the front-rear direction. Therefore, even if the seat 1 is provided with the air blower 9, in addition to the vibration devices 7 and the air bags 8, the ventilation groove 35 can also be arranged on the surface of the seat back pad 12.

[0083] The shape of the cover pad 46 may be changed. For example, as shown in FIG. 7, the cover pad 46 may have a plurality of second recesses 51 recessed from the back surface of the cover pad 46 to the front surface. In this embodiment, each of the plurality of second recesses 51 is provided so as to recess forward from the rear surface of the cover pad 46. A corresponding air bag 8 is accommodated in each second recess 51. This prevents each air bag 8 from moving in the planar direction of the seat back pad 12. In addition, since the step between each air bag 8 and the seat back pad 12 is reduced, the foreign body sensation felt by the occupant is further reduced.

[0084] In other embodiments, each second recess 51 may be provided in the seat back pad 12. That is, each second recess 51 may be provided so as to be recessed rearward from the front surface of the seat back pad 12. Each second recess 51 may be connected to the first recess 41 that houses the vibration device 7. Specifically, each second recess 51 may be provided so as to protrude outwardly in the upper and lower directions from the upper and lower edges of the first recess 41. The bottom surface of each second recess 51 may be located on the front side of the bottom surface of each first recess 41.

[0085] Although the description of the specific embodiment has been completed above, the present invention is not limited to the above embodiment and can be modified in a wide range of ways. For example, the air bags 8, the vibration devices 7, and the air blower 9 are provided in the seat back 5, but may be provided in the seat cushion 4. [Explanation of symbols]

[0086] 1: Seat (vehicle seat) 7: Vibration device 9: Blower 8: Air bag 11: Seat back frame (frame) 12: Seat back pad (pad) 31: Blower body 32: Duct 34: Ventilation hole 35: Ventilation groove 41: First recess 43: Double-sided tape (fixing material) 44: Spacer 46: Cover pad 48:Through hole 51: Second recess

Claims

1. A vehicle seat, A frame, A pad supported by the frame; At least one vibration device disposed on a front side of the pad; at least one air bladder disposed on the front side of the pad; The air bag and the vibration device overlap each other when viewed in a thickness direction of the pad.

2. The pad has at least one first recess recessed from a surface of the pad to a back side thereof to accommodate the vibration device; The vehicle seat according to claim 1 , wherein the air bag is disposed on the front side of the pad relative to the vibration device.

3. The vehicle seat according to claim 2 , wherein the air bag is fixed to the pad by a fixing member.

4. At least one of the air bags includes two air bags spaced apart from each other; A spacer is disposed between the two air bags, The vehicle seat according to claim 3 , wherein the vibration device overlaps with the spacer and the two vibration devices when viewed in the thickness direction of the pad.

5. Each of the plurality of air bags is inflated by supplying a fluid thereto and is deflated by discharging the fluid therefrom; 5. The vehicle seat of claim 4, wherein the surface of the spacer is flush with the surface of the deflated air bladder.

6. Further comprising a blower; The air blower includes an air blower main body and a duct connected to the air blower main body, the pad further includes an air vent hole penetrating the pad in the thickness direction and connected to the duct, and an air vent groove connected to the air vent hole, recessed from the front surface of the pad to the back surface of the pad, and extending along a surface direction of the pad; The vehicle seat according to claim 5 , wherein at least one of the first recesses is connected to the ventilation groove.

7. The vehicle seat according to claim 6 , wherein a width of the ventilation groove is narrower than a width of the first recess.

8. A cover pad is disposed on the front side of the pad; The cover pad is disposed so as to cover the ventilation groove, The vehicle seat according to claim 7 , wherein the cover pad has a plurality of through holes overlapping the ventilation grooves when viewed in the thickness direction of the pad.

9. the cover pad has a plurality of second recesses recessed from the back surface of the cover pad to the front surface side, The vehicle seat according to claim 8 , wherein each of the two air bags is accommodated in the second recess.

10. A method for manufacturing a vehicle seat, comprising: The vehicle seat includes a frame, a pad supported by the frame, at least one vibration device arranged on a front side of the pad, two air bags arranged spaced apart from each other on the front side of the pad, a spacer arranged between the two air bags, and a fixing member for fixing each of the two air bags to the pad, The pad has at least one first recess recessed from a front surface of the pad to a rear surface thereof, a first step of housing the vibration device in the first recess; a second step of placing the fixing member on the front side of the pad; a third step of fixing each of the two air bags to the fixing member so as to overlap with the vibration device when viewed in a thickness direction of the pad; and a fourth step of disposing the spacer between the two air bags.

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