Vehicular seat

Abstract

To provide a vehicular seat having an adhesion portion for surface cover arranged at a proper position in consideration of a position of a vibration generating member.SOLUTION: A vehicular seat 10 comprises a pad 13a, a surface cover 13b covering the pad 13a, a vibration generating member 23 provided on the pad 13a, and an airbag 21a provided in the pad 13a. The surface cover 13b positioned at a front side of the vehicular seat of the airbag 21a is made to adhere to a portion of the pad 13a, where an adhesion portion 13f at which the surface cover 13b is made to adhere to the pas 13a is arranged at a position where the portion does not overlap with the vibration generating member 23.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a vibration generating member. [Background technology]

[0002] In recent years, vehicle seats have come to be equipped with vibration generating members to transmit information to occupants. For example, vibration generating members can be provided to transmit important information, such as navigation instructions and lane departure warnings, in a manner other than visual or audio, making it possible to transmit information more quickly and in a manner that attracts attention. In addition, the provision of vibration generating members can provide realistic vibrations in the seat, improving the entertainment experience and allowing occupants to feel more immersive when enjoying media such as music and movies. Patent Document 1 discloses a structure in which a hole is provided in a pad of a seat back and a vibration generating member is attached to the hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] US Patent Application Publication No. 2022 / 0340064 Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, in addition to the vibration generating member, an airbag may also be attached to a vehicle seat as a safety device. When an airbag (side airbag) is provided on a seat back, a seam (called a tear line) is provided so that the upholstery, which is the seat cover, breaks appropriately when the airbag inflates. In addition, in order to efficiently transmit the expansion energy of the airbag and break the seam in a short time, the upholstery may be attached to a pad such as a bank portion by adhesion. Since the adhesion point is provided on the seating surface side, like the vibration generating member, it has been required to appropriately position the adhesion point of the upholstery in consideration of the position of the vibration generating member, etc.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a vehicle seat having an adhesive portion for the cover that is positioned at an appropriate position taking into account the position of the vibration-generating member. In addition to the above object, another object is to further reduce the size of the vehicle seat by appropriately arranging components such as the vibration generating component provided in the seat. [Means for solving the problem]

[0006] The above-mentioned problems are solved by the vehicle seat of the present invention, which comprises a pad, a skin covering the pad, a vibration generating member provided on the pad, and an airbag provided within the pad, wherein the skin located on the seat front side of the airbag is adhered to a part of the pad, and the adhesion point where the skin and the pad are adhered is positioned in a position that does not overlap the vibration generating member.

[0007] By positioning the adhesive points of the cover in an area that does not overlap with the vibration generating member, interference between the adhesive points of the cover and the vibration generating member can be suppressed, and the vibrations of the vibration generating member can be properly transmitted to the seat occupant.

[0008] In the vehicle seat described above, it is preferable that at least a portion of the adhesion portion and the vibration generating member are disposed at the same height in the up-down direction of the seat. By arranging at least a portion of the adhesive portion and the vibration generating member at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction.

[0009] In the vehicle seat described above, the vibration generating member may be disposed on a surface of the pad facing a seat occupant. By disposing the vibration generating member on the seating surface, interference between the adhesive points and the vibration generating member can be suppressed, and the vibrations of the vibration generating member can be more appropriately transmitted to the seated occupant.

[0010] In addition, according to the above-mentioned vehicle seat, the pad is provided with kneading members for kneading the seat occupant, and the adhesive points, the vibration generating member and the kneading members are preferably at least partially arranged at the same height in the vertical direction of the seat. By arranging the adhesive points, the vibration generating members and the kneading members at least partially at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction.

[0011] In addition, according to the above-mentioned vehicle seat, a sensor is provided on the pad for detecting the biological information of the seated occupant, and the adhesive points, the vibration generating member and the sensor are preferably arranged at least partially at the same height in the vertical direction of the seat. By arranging the adhesive points, the vibration generating member, and the sensor at least partially at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction.

[0012] In addition, in the above vehicle seat, the sensor may be a heartbeat detection sensor that detects the heartbeat of the seated occupant. By providing a heart rate detection sensor, the heart rate of the seated occupant can be measured, and since at least a portion of the heart rate detection sensor is positioned at the same height in the vertical direction of the seat as the adhesive point of the upholstery and the vibration generating member, the vehicle seat can be made more compact in the vertical direction.

[0013] Furthermore, according to the above-mentioned vehicle seat, a folding device is provided within the pad, the pad has a pivot axis which is a point at which the pad folds in response to the folding of the folding device, and the adhesive point and the vibration generating member are preferably positioned below the pivot axis. By arranging the adhesive points and the vibration generating member below the rotation axis, bending of the adhesive points and the vibration generating member can be suppressed. Effect of the Invention

[0014] According to the present invention, the adhesive points of the upholstery are positioned in areas that do not overlap with the vibration generating member, thereby suppressing interference between the adhesive points of the upholstery and the vibration generating member, and enabling the vibrations of the vibration generating member to be properly transmitted to the seated occupant. Furthermore, by arranging at least a portion of the adhesive portion and the vibration generating member at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction. Furthermore, by arranging the vibration generating member on the seating surface, interference between the adhesive points and the vibration generating member can be suppressed, and the vibrations of the vibration generating member can be more appropriately transmitted to the seated occupant. Furthermore, by arranging at least a portion of the adhesive points, the vibration generating members and the kneading members at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction. Furthermore, by arranging at least a portion of the adhesive points, the vibration generating member, and the sensor at the same height in the vertical direction of the seat, it is possible to make the vehicle seat more compact in the vertical direction. In addition, by providing a heart rate detection sensor, the heart rate of the seated occupant can be measured, and since at least a portion of the heart rate detection sensor is positioned at the same height in the vertical direction of the seat as the adhesive point and the vibration generating member, the vehicle seat can be made more compact in the vertical direction. Furthermore, by locating the adhesive points and the vibration generating member below the axis of rotation, bending of the guide member and the vibration generating member can be prevented. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment, as viewed obliquely from the front. [Diagram 2] 2 is a perspective view of the seat back frame as seen obliquely from the front. FIG. [Diagram 3] FIG. 4 is a side view of the seat cushion frame. [Figure 4] FIG. 2 is a front view of the seat back with the cover removed. [Diagram 5] 5 is a cross-sectional view taken along line AA in FIG. 4, showing the positional relationship between the airbag device provided in the seat back and other devices. FIG. [Figure 6] 5 is a cross-sectional view taken along line BB in FIG. 4, showing the configuration of the lower side of the seat back. [Figure 7] 5 is a cross-sectional view taken along line CC in FIG. 4, showing the positions of air blowing holes and ducts provided in the seat back. [Figure 8] 11 is an explanatory diagram showing the operation of the folding device. FIG. [Figure 9] FIG. 11 is a front view of a seat back of a vehicle seat according to a second embodiment. [Figure 10] 10 is a cross-sectional view of the seat back taken along the line FF in FIG. 9. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The configuration of a vehicle seat according to this embodiment will be described below with reference to the drawings. However, the embodiment described below is an example for making the present invention easier to understand, and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention, and of course, the present invention includes equivalents thereof.

[0017] In the following, a vehicle seat will be given as an example of a vehicle seat, and a configuration example thereof will be described. In the following description, the "front-rear direction" refers to the front-rear direction of the vehicle seat, which coincides with the direction of travel when the vehicle is traveling. The "seat width direction" refers to the width direction of the vehicle seat, which coincides with the left-right direction as seen by an occupant seated in the vehicle seat. The "up-down direction" refers to the up-down direction of the vehicle seat, which coincides with the vertical direction when the vehicle is traveling on a horizontal plane.

[0018] In addition, in the following description, when various directions are described with the word "seat" added, such as "seat width direction" and "seat height direction", this indicates the direction relative to the vehicle seat, and when various directions are described with the word "vehicle" added, such as "inside of the vehicle" and "outside of the vehicle", this indicates the direction relative to the vehicle. In addition, the shapes, positions, postures, etc. of each part of the vehicle seat described below will be described assuming that the vehicle seat is in a seatable state, unless otherwise specified.

[0019] <<First embodiment>> <Basic Configuration of Vehicle Seat 10> The configuration of a vehicle seat 10 according to a first embodiment of the present embodiment will be described with reference to FIG. 1 to FIG. 8. FIG. 1 is a perspective view of the vehicle seat 10 as viewed obliquely from the front. In FIG. 1, for convenience of illustration, a part of the vehicle seat 10 is illustrated with the upholstery 12b, 13b (also called a trim cover) removed. FIG. 2 is a perspective view of the seat back frame 131 as viewed obliquely from the front. FIG. 3 is a side view of the seat cushion frame 121 as viewed from the side. FIG. 4 is a view of the seat back 13 as viewed from the front with the upholstery 13b removed. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4, showing the positional relationship between the airbag device 21 provided in the seat back 13 and other devices. FIG. 6 is a cross-sectional view taken along line BB in FIG. 4, showing the configuration of the lower side of the seat back 13. FIG. 7 is a cross-sectional view taken along line CC in FIG. 4, showing the positions of the air blower hole 27 and the air conditioning duct 32 provided in the seat back 13. FIG. 8 is an explanatory view showing the operation of the seat back folding device 30.

[0020] The vehicle seat 10 is placed on a vehicle body floor FL and is a seat in which a vehicle occupant sits. In this embodiment, the vehicle seat 10 is used as a front seat corresponding to a front seat of the vehicle. However, the vehicle seat 10 is not limited to this, and may be a rear seat disposed at the rear of the vehicle, and may also be used as a second-row middle seat or a third-row rear seat in a vehicle having three rows of seats in the front-rear direction.

[0021] 1, the vehicle seat 10 includes a seat cushion 12, a seat back 13, a headrest 14, and an ottoman 15. The seat cushion 12, the seat back 13, and the headrest 14 may be collectively referred to as a seat body 11. The vehicle seat 10 also includes a movable mechanism 16 for moving the seat body 11, which includes a reclining device 17, a slide rail device 18, a rotating device 19, and a link device 20 (see FIG. 3).

[0022] <Seat cushion 12> The seat cushion 12 is a seating portion that supports the buttocks of a seated person from below. The main components of the seat cushion 12 are a seat cushion frame 121 (see FIG. 3) that forms the skeleton of the seat cushion 12, a cushion pad 12a that covers the seat cushion frame 121, and a skin 12b that covers the seat cushion frame 121 and the cushion pad 12a.

[0023] The seat cushion frame 121 is formed in a rectangular frame shape when viewed from above the vehicle seat 10, and a pair of cushion side frames 121a are provided on the left and right sides. The pair of cushion side frames 121a are basically members configured symmetrically and are provided extending in the front-rear direction of the seat.

[0024] The seat cushion frame 121 has a front connection frame 121b that connects the pair of cushion side frames 121a at the front side, and a rear connection frame 121d that connects them at the rear side. A joint frame 121c is provided behind the front connection frame 121b. A plate-shaped pan frame 121e is provided in front of the front connection frame 121b. The seat cushion frame 121 is also provided with a pressure-receiving member for the cushion (not shown) that is arranged to bridge between the front connection frame 121b and the rear connection frame 121d. The pressure-receiving member for the cushion 25 is capable of supporting the buttocks of a seated person from below.

[0025] <Seatback 13> The seat back 13 is a backrest portion that supports the back of a seated occupant. The main components of the seat back 13 are a seat back frame 131 (see FIG. 2) that forms the framework of the seat back 13, a back pad 13a that covers the seat back frame 131, and a skin 13b that covers the seat back frame 131 and the back pad 13a.

[0026] 2, the seat back frame 131 is formed in a frame shape as a whole and includes a pair of back side frames 131a arranged on the left and right, an upper frame 131b, and a lower frame 131c. The upper frame 131b is provided with a pair of head rest holding portions 135 into which head rest pillars (not shown) of the head rest 14 are inserted.

[0027] The seat back frame 131 is provided with a back pressure plate 132 (pressure receiving member) that is disposed between the upper frame 131b and the lower frame 131c. A back support air cell 133 is attached to the pressure plate 132, and by pressing the back of the seated occupant, it is possible to correct the posture of the seated occupant.

[0028] Further, airbag devices 21 are provided on both sides of the seatback frame 131. In this embodiment, a far side airbag device 21F is provided on the left side of the seatback frame 131, and a near side airbag device 21N is provided on the right side. The positions of the far side airbag device 21F and the near side airbag device 21N are merely examples, and the far side airbag device 21F and the near side airbag device 21N may be provided on the opposite sides depending on the position in the vehicle where the vehicle seat 10 is disposed.

[0029] The seat back frame 131 is provided with a seat back tilting device 30 that rotates the upper frame 131b in the front-rear direction relative to the back side frame 131a. The seat back tilting device 30 is provided within the back pad 13a. In other words, the back side frame 131a and the upper frame 131b are rotatably connected by the seat-bending device 30, and as shown in Fig. 8, the seat-bending device 30 allows the upper frame 131b to rotate in the front-rear direction about the rotation axis 31. The seat-bending device 30 may rotate the upper frame 131b manually, or an actuator or the like may be provided on the back side frame 131a so that the seat-bending device 30 rotates the upper frame 131b automatically.

[0030] The upper frame 131b rotates around the rotation axis 31, and a part of the back pad 13a covering the seat back frame 131 is configured to fold in response to the center folding of the upper frame 131b. That is, the back pad 13a has the rotation axis 31, which is the point at which the back pad 13a folds in response to the center folding of the center folding device 30.

[0031] <Headrest 14> The headrest 14 is disposed on the upper part of the seat back 13 and supports the head of a seated occupant. The headrest 14 is composed of a headrest pillar, a padding material, and a cover, and the headrest pillar of the headrest 14 protrudes downward and extends downward. The protruding headrest pillar is held by a headrest holding portion 135 provided on the seat back frame 131, whereby the headrest 14 is attached to the seat back 13.

[0032] <Reclining device 17> The seat cushion 12 and the seat back 13 are connected with a reclining device 17 in between. The reclining device 17 rotatably connects the seat back 13 to the seat cushion 12, and can lock the seat back 13 in a state inclined at a predetermined angle relative to the seat cushion 12. By unlocking the reclining device 17, the seat back 13 can be tilted forward or backward.

[0033] <Slide rail device 18> 1 and 3, a slide rail device 18 is provided under the seat cushion 12, and the vehicle seat 10 is placed on the vehicle floor FL in a state in which it can slide in the front-rear direction by the slide rail device 18. The slide rail device 18 has a typical structure of a slide rail device, and is composed of a lower rail 181 fixed to the vehicle floor FL, and an upper rail 182 that can slide in the front-rear direction relative to the lower rail 181.

[0034] <Rotating Device 19> The rotation device 19 supports the seat body 11 and the ottoman 15 so as to be rotatable about a rotation axis extending in the vertical direction. The rotation device 19 has a base plate 191, a rotating member 192, and an upper plate 193 as main components.

[0035] The base plate 191 is fixed in a state of being suspended on upper rails 182 arranged on the left and right sides of the vehicle seat 10. Therefore, the base plate 191 does not rotate with respect to the vehicle body floor FL. The upper plate 193 has an annular shape in a plan view, and is rotatably accommodated in a recess having an annular shape formed in the base plate 191. The upper plate 193 is fixed to the seat cushion frame 121 via the link device 20. More specifically, the upper plate 193 is fixed to a cushion side frame 121a constituting the seat cushion frame 121 via the left and right link devices 20. With this configuration, it is possible to rotate the seat main body 11.

[0036] <Link device 20> 3, a link device 20 is provided between the seat cushion 12 and the rotating device 19. The link device 20 supports the seat cushion 12 so that the seat cushion 12 can tilt in the front-rear direction with respect to the vehicle body floor FL. The height and inclination of the seat body 11 can be changed by rotating each link provided in the link device 20.

[0037] The cushion pad 12a and the back pad 13a have cushion portions formed of a foam, and the cushion portions are covered with the skins 12b and 13b. The cushion pad 12a and the back pad 13a correspond to the pads of the present invention. In this embodiment, the cushion pad 12a and the back pad 13a are urethane pads foamed using polyurethane foam (urethane foam). The cushion pad 12a and the back pad 13a may be foamed using soft or semi-rigid polypropylene bead foam or polyethylene foam. In the back pad 13a, the pad of the seat surface 136 that supports the seated person is preferably formed to be harder than the pad arranged on the bank portion 137. In other words, the pad arranged on the bank portion 137 is preferably formed to be softer than the pad arranged on the seat surface 136.

[0038] The skins 12b, 13b are made of cloth, film, leather, etc., and are attached to cover the cushion pad 12a and the back pad 13a in a stretched state with a predetermined tension. The detailed structure of the skin 13b covering the back pad 13a of the seat back 13 will be described with reference to FIG. As shown in Fig. 5, the skin 13b is composed of a seat covering portion 13ba, a bank covering portion 13bb, a side covering portion 13bc, and a back covering portion 13bd. The seat covering portion 13ba is a portion that covers the seat surface 136 that directly supports the back of a seated occupant, and the bank covering portion 13bb is a portion that mainly covers the surface of the bank portion 137 of the seat back 13 that faces the seated occupant. The side covering portion 13bc is a portion that covers the side surface of the seat back 13, and the back covering portion 13bd is a portion that covers the back surface of the seat back 13.

[0039] The seat covering portion 13ba and the bank covering portion 13bb are connected by a stitching portion 13j that is hung in a vertical hanging groove 134a formed between the seat surface 136 and the bank portion 137 of the seat back 13. The stitching portion 13j forms a hanging line.

[0040] The bank covering portion 13bb and the side covering portion 13bc are connected by sewing at the front end of the bank portion 137. The portion connected by sewing forms a breaking portion 13e that breaks when the airbag 21a is deployed from the far side airbag device 21F or the near side airbag device 21N, which will be described later. The breaking portion 13e is also called a tear line. The side covering portion 13bc and the back covering portion 13bd are connected by a line fastener 13d on the back surface of the seat back 13. That is, as shown in Fig. 5, the back covering portion 13bd of the seat back 13 connects the right side covering portion 13bc of the seat back 13 to the left side covering portion 13bc.

[0041] <Hanging groove 134> As shown in FIG. 4, a hanging groove 134 is formed in the back pad 13a of the seat back 13. The hanging groove 134 is composed of two vertical hanging grooves 134a extending in the seat vertical direction and a horizontal hanging groove 134b extending in the seat width direction. The horizontal hanging groove 134b connects the two vertical hanging grooves 134a, and the hanging groove 134 as a whole is formed in an H shape when viewed from the front of the seat. Note that this arrangement of the hanging grooves 134 is just one example, and the horizontal hanging groove 134b may be arranged to cross the seat back 13, and the upper ends of the two vertical hanging grooves 134a may be arranged to be connected to the horizontal hanging groove 134b. In other words, the hanging groove 134 as a whole may be formed in a Π shape when viewed from the front of the seat.

[0042] <Clip 13c> A plurality of clips 13c are arranged at predetermined intervals inside the vertical hanging groove 134a and the horizontal hanging groove 134b in order to hang the sewn portion 13j of the skin 13b. Clip 13c is fixed by being partially embedded in the bottom of vertical hanging groove 134a as shown in Fig. 4. Clip 13c has a substantially V-shaped cross section, and is configured to hold hanging member 13h provided at the tip of stitching portion 13j. Clip 13c may have a U-shaped or C-shaped cross section.

[0043] The clip 13c is made of resin, for example, polyacetal (POM) resin, polypropylene (PP) resin, polyamide (PA) resin, polycarbonate (PC) resin, etc. It is preferable to form the clip 13c from polyacetal (POM) resin, which has a relatively high strength.

[0044] <Hanging member 13h> As shown in FIG. 5, a suspending member 13h is attached to a seam 13j (suspending line) between the seat covering portion 13ba and the bank covering portion 13bb. The hanging member 13h has a bulging tip, and its base is connected to the stitching portion 13j of the skin 13b by sewing. The hanging member 13h can be fixed to the clip 13c by inserting the tip of the hanging member 13h into the clip 13c. The hanging member 13h is made of resin, for example, polypropylene (PP) resin.

[0045] <Airbag device 21> As described above, the airbag device 21 is provided on each of the left and right sides of the seat back 13 of the vehicle seat 10. The far side airbag device 21F is disposed on the side of the seat back 13 farther from the door (the side on the left side of the seat). The near side airbag device 21N is disposed on the side of the seat back 13 closer to the door (the side on the right side of the seat). The airbag device 21 is stored in a space surrounded by the back pad 13a, and is attached to the back side frame 131a and fixed in position.

[0046] The airbag device 21 has a known structure, and the structure is illustrated typically in Fig. 5. The airbag device 21 includes an airbag 21a that inflates when activated to protect a seated occupant, an inflator 21b that supplies gas to the airbag 21a, and a case 21c that covers the airbag 21a and the inflator 21b. 5, a slit is formed in the back pad 13a near the airbag device 21. When the airbag 21a inflates from the airbag device 21, the back pad 13a breaks at the slit, the skin 13b is cut at the break portion 13e, and the airbag 21a is deployed outward.

[0047] <Vibration Generator 23> The seat back 13 is provided with a plurality of vibration generators 23. More specifically, the vibration generators 23 are disposed on the surface of the back pad 13a of the seat back 13 facing the seat occupant. The vibration generators 23 correspond to vibration generating members of the present invention. The vibration generator 23 is made of an eccentric motor, and functions as a warning means for the seated occupant by generating vibrations that the occupant can sense. For example, when the vibration generator 23 detects that a danger is approaching a moving vehicle, it generates vibrations to warn the occupant of the approaching danger. The vibration generator 23 has a plurality of vibration patterns using vibration intensity, frequency, or vibration time as parameters, and can provide various warnings to the seated occupant. By placing the vibration generating device 23 on the surface facing the occupant, interference between the force cloth 28 (guide member) described below and the vibration generating device 23 can be suppressed, and the vibrations of the vibration generating device 23 can be more appropriately transmitted to the occupant.

[0048] <Heart rate detection sensor 24> A plurality of heartbeat detection sensors 24 are provided on the seating surface of the seat back 13. Specifically, four heartbeat detection sensors 24 are arranged on the central seat surface 136, and two heartbeat detection sensors 24 are arranged on the upper part of the bank portion 137.

[0049] The heartbeat detection sensor 24 is a sensor that detects the heartbeat (biometric information) of the back of the seated person and outputs a detection signal. The heartbeat detection sensor 24 has a body movement detection sensor that detects body movement associated with the pulse of the seated person and a measurement circuit that measures the heartbeat per unit time based on the detection signal. The sensor provided on the seating surface of the seat back 13 may be a pulse wave sensor that detects the pulse wave of the seated person or a seating sensor that detects the load of the seated person, other than the heartbeat sensor. The seating sensor is composed of a pressure sensor that detects the load of the seated person or an optical sensor that detects the state of the seating surface. The number and arrangement of the heartbeat detection sensors 24 are merely examples and are not limited to these. That is, seven or more or five or less heartbeat detection sensors 24 may be arranged.

[0050] <Kneading air cell 26> A plurality of kneading air cells 26 (kneading members) are provided on the seating surface of the seat back 13. Specifically, as shown in FIG. 4, 14 kneading air cells 26 are arranged in the seat up-down direction or the seat width direction. The kneading air cells 26 are members that push out the back pad 13a or the skin 13b located in front of them and press the back of the seated person by sealing compressed air therein and expanding. This kneads the back of the seated person, for example, promoting the blood circulation of the seated person. Each kneading air cell 26 is connected to an actuator (not shown) that blows air by a tube. The kneading air cell 26 corresponds to the kneading member of the present invention. In addition to the kneading air cells 26, the back of the seated person may be kneaded by a mechanical device using a vibrating roller, ball, or the like. The number and arrangement of the kneading air cells 26 are merely examples and are not limited thereto. That is, 15 or more or 13 or less kneading air cells 26 may be arranged.

[0051] <Blow hole 27> A plurality of ventilation holes 27 are formed in the seating surface of the seat back 13. As shown in Fig. 7, the ventilation holes 27 are connected to an air conditioning duct 32 inside the back pad 13a, and can blow out air sent from a blower 33 provided below the seat cushion 12, for example. For example, blowing out cool air can give a comfortable feeling of coolness to the back of the seated person. A plurality of small holes are formed in the surface 13b at the positions where the ventilation holes 27 are provided, ensuring breathability. In this embodiment, six ventilation holes 27 are formed in the center seat portion to blow air to a seated person. Note that the number and arrangement of the ventilation holes 27 are merely an example and are not limited thereto. The ventilation holes 27 may be provided in the bank portion 137, and seven or more or five or less ventilation holes 27 may be provided. Note that, as shown in Figs. 6 and 7, a duct connection portion 34 for connecting a duct is formed below the back pad 13a.

[0052] <Rikifu 28> In this embodiment, as shown in Fig. 2, the webbing 28 is provided at a portion corresponding to the near-side airbag device 21N, in other words, at a position overlapping the near-side airbag device 21N when the seat back 13 is viewed from the front. The webbing 28 is also disposed along the surface of the bank portion 137 and the side portion of the seat back 13. The webbing 28 can transmit the force applied when the airbag 21a is deployed to the breaking portion 13e, and promote the deployment of the airbag 21a. That is, the webbing 28 functions as a guide member that guides the deployment of the airbag 21a.

[0053] The webbing 28 is also called an inner webbing and is preferably made of a material having a smaller tensile elongation than the skin 13b. In other words, the webbing 28 is made of a sheet-like material having less elasticity than the skin 13b. In this embodiment, it is composed of an upper webbing 28U arranged on the upper side and a lower webbing 28L arranged on the lower side. The upper webbing 28U and the lower webbing 28L are composed of inner webbing 28Ua, 28La arranged on the bank portion 137 and outer webbing 28Ub, 28Lb arranged on the sides of the seat back 13. The inner webbing 28Ua, 28La is provided along the surface of the bank portion 137 of the back pad 13a from the breaking portion 13e to the stitching portion of the vertical hanging groove 134a. The inner webbing 28Ua, 28La is sewn to the skin 13b at the stitching portion and attached to the vertical hanging groove 134a via a clip 13c (engagement member). The outer webbing 28Ub, 28Ub is disposed on the side of the seat back 13 along the side surface of the back pad 13a from the break portion 13e to the back surface.

[0054] 4 and 5, the upper webbing 28U of the webbing 28 is disposed at a position not overlapping with the vibration generator 23 when the seat back 13 is viewed from the front. In other words, the upper webbing 28U is disposed so as to avoid the vibration generator 23. By disposing the webbing 28 in this manner, interference between the webbing 28 and the vibration generator 23 can be suppressed.

[0055] As described above, the webbing 28 is attached to the hanging groove 134 via the clip 13c (engagement member). As shown in Fig. 4, the upper webbing 28U of the webbing 28, the vibration generator 23, and the clip 13ca (the clip 13c arranged in the middle of the seat back 13) are partially disposed at the same height in the vertical direction of the seat. By disposing the upper webbing 28U, the vibration generator 23, and the clip 13ca partially at the same height, the vehicle seat 10 can be made more compact in the vertical direction.

[0056] 4, the upper webbing 28U of the webbing 28 serving as a guide member, the vibration generator 23, and the kneading air cells 26a (the kneading air cells 26 disposed in the center of the seat back 13) are at least partially disposed at the same height in the vertical direction of the seat. By disposing the upper webbing 28U, the vibration generator 23, and the kneading air cells 26a at the same height, the vehicle seat 10 can be made more compact in the vertical direction.

[0057] 4, the upper webbing 28U of the webbing 28 serving as a guide member, the vibration generator 23, and the heartbeat detection sensor 24a (heartbeat detection sensor 24 disposed in the middle of the seat) are disposed so that at least a portion of them are at the same height in the vertical direction of the seat. By disposing the upper webbing 28U, the vibration generator 23, and a portion of the heartbeat detection sensor 24a at the same height, the vehicle seat 10 can be made more compact in the vertical direction.

[0058] As described above, the vehicle seat 10 of this embodiment is configured such that a portion of the seat back 13 is bent by the seat-back folding device 30. The back pad 13a and the upholstery 13b of the seat back 13 follow the seat-back folding caused by the seat-back folding device 30 and bend at the pivot axis 31. That is, the back pad 13a has the pivot axis 31 as a location where it folds in response to the seat-back folding. The upper force cloth 28U of the force cloth 28 and the vibration generator 23 are disposed below the pivot axis 31. By disposing the upper force cloth 28U and the vibration generator 23 below the rotation axis 31, bending of the upper force cloth 28U and the vibration generator 23 can be suppressed.

[0059] In the seat back 13 of the vehicle seat 10 of the first embodiment, the far side airbag device 21F disposed on the left side is not provided with a webbing 28, unlike the near side airbag device 21N. Instead, the skin 13b located on the front side of the far side airbag device 21F is adhered to a part of the back pad 13a by an adhesive. The adhesive-fixed adhesion area 13f is provided on a part of the surface of the bank portion 137, but the adhesive adhesion area 13f may be provided on the entire surface of the bank portion 137.

[0060] 4, the adhesion portion 13f where the cover 13b is adhered to the back pad 13a is disposed at a position that does not overlap with the vibration generator 23. By disposing the adhesion portion 13f at a position that does not overlap with the vibration generator 23, interference between the adhesion portion 13f and the vibration generator 23 can be suppressed, and the vibration of the vibration generator 23 can be appropriately transmitted to the seated occupant.

[0061] 4, the adhesion points 13f and at least a portion of the vibration generator 23 are disposed at the same height in the up-down direction of the seat. By disposing the adhesion points 13f and a portion of the vibration generator 23 at the same height, for example, it is possible to make the vehicle seat 10 more compact in the up-down direction.

[0062] Also, the adhesive portion 13f, the vibration generator 23, and the kneading air cells 26a (kneading air cells 26 in the center of the seat back) are at least partially disposed at the same height in the up-down direction of the seat as shown in Fig. 4. By disposing the adhesive portion 13f, the vibration generator 23, and a portion of the kneading air cells 26a at the same height, for example, it is possible to make the vehicle seat 10 more compact in the up-down direction.

[0063] Also, the adhesion portion 13f, the vibration generator 23, and the heartbeat detection sensor 24a (the heartbeat detection sensor 24 provided in the middle of the seat back 13) are at least partially disposed at the same height in the vertical direction of the seat as shown in Fig. 4. By disposing the adhesion portion 13f, the vibration generator 23, and the heartbeat detection sensor 24a at the same height, for example, it is possible to make the vehicle seat 10 more compact in the vertical direction.

[0064] Also, the bonding portion 13f and the vibration generating device 23 are disposed below the rotation axis 31, which is the location where the back pad 13a bends following the folding device 30. By disposing the bonding portion 13f and the vibration generator 23 below the rotation axis 31, bending of the bonding portion 13f and the vibration generator 23 can be suppressed.

[0065] <Method of Assembling Vehicle Seat 10> Here, a method of assembling the vehicle seat 10 according to the first embodiment will be described. The vehicle seat 10 of the first embodiment may be assembled by an assembly method including preparing a pad (back pad 13a), a vibration generating member (vibration generating device 23) provided in the pad, an airbag 21a provided within the pad, and a guide member (webbing 28) attached to a part of the pad for guiding the deployment direction of the airbag 21a, and arranging the guide member (webbing 28) in a portion that does not overlap with the vibration generating member.

[0066] In addition, in the above-mentioned assembly method, the vehicle seat 10 may be assembled by an assembly method including the steps of forming a hanging groove 134 in the pad, attaching the guide member to the hanging groove 134 via an engaging member (clip 13c), and arranging the guide member, the vibration generating member, and the engaging member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0067] Moreover, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes arranging the vibration generating member on the surface of the pad facing the seat occupant.

[0068] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing kneading members (kneading air cells 26) that are provided on the pad and knead the seat occupant, and arranging the guide members, vibration generating members and kneading members so that at least portions of them are at the same height in the vertical direction of the seat.

[0069] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a sensor (heart rate detection sensor 24) that is attached to the pad and detects the biological information of the seated occupant, and arranging the guide member, vibration generating member and sensor so that at least a portion of them are at the same height in the vertical direction of the seat.

[0070] Moreover, the vehicle seat 10 may be assembled by the above-described assembly method, in which the sensor is a heartbeat detection sensor 24 that detects the heartbeat of a seated occupant.

[0071] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a folding device 30 within the pad, and having a pivot axis 31 at which the back pad 13a folds in response to the folding of the folding device 30, and arranging the guide member and the vibration generating member below the pivot axis 31.

[0072] In addition, the vehicle seat 10 may be assembled by an assembly method including preparing a pad (back pad 13a), a sensor (heart rate detection sensor 24) provided in the pad for detecting the biological information of the seated occupant, an airbag 21a provided within the pad, and a guide member (webbing 28) attached to a part of the pad for guiding the deployment direction of the airbag 21a, and arranging the guide member in a portion that does not overlap with the sensor.

[0073] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes forming a hanging groove 134 in the pad, attaching the guide member to the hanging groove 134 via an engaging member (clip 13c), and arranging the guide member, the sensor and the engaging member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0074] Moreover, the vehicle seat 10 may be assembled by the above-described assembly method, which includes disposing the sensor on the surface of the back pad 13a facing the seat occupant.

[0075] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing kneading members (kneading air cells 26) that are provided on the pad and knead the seat occupant, and arranging the guide members, the sensor and the kneading members so that at least a portion of them are at the same height in the vertical direction of the seat.

[0076] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a vibration generating member to be provided on the pad, and arranging the guide member, the sensor and the vibration generating member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0077] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a folding device 30 within the pad, and having a pivot axis 31 at which the back pad 13a folds in response to the folding of the folding device 30, and arranging the guide member and the sensor below the pivot axis 31.

[0078] Moreover, the vehicle seat 10 may be assembled by the above-described assembly method, in which the sensor is a heartbeat detection sensor 24 that detects the heartbeat of a seated occupant.

[0079] In addition, the vehicle seat 10 may be assembled by an assembly method including the steps of preparing a pad (back pad 13a), a skin 13b covering the pad, and an airbag 21a provided within the pad, and positioning the skin 13b located on the seat front side of the airbag 21a, which is adhered to a part of the pad, and an adhesion point 13f where the skin 13b and the pad are adhered, in a position that does not overlap with a vibration generating member (vibration generating device 23).

[0080] The vehicle seat 10 may be assembled by the above-mentioned assembly method including arranging the adhesion portion 13f and the vibration generating member so that at least their positional portions are at the same height in the seat up-down direction.

[0081] Moreover, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes arranging the vibration generating member on the surface of the pad facing the seat occupant.

[0082] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing kneading members (kneading air cells 26) that are provided on the pad and knead the seat occupant, and arranging the adhesive points 13f, the vibration generating members and the kneading members so that at least a portion of them are at the same height in the vertical direction of the seat.

[0083] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a sensor that is attached to the pad and detects the biological information of the seated occupant, and arranging the adhesive point 13f, the vibration generating member, and the sensor so that at least a portion of them are at the same height in the vertical direction of the seat.

[0084] In addition, the vehicle seat 10 may be assembled by the above-mentioned assembly method, which includes preparing a folding device 30 within the pad, and having a pivot axis 31 at which the back pad 13a folds in response to the folding of the folding device 30, and arranging the adhesive point 13f and the vibration generating member below the pivot axis 31.

[0085] Moreover, the vehicle seat 10 may be assembled by the above-described assembly method, in which the sensor is a heartbeat detection sensor 24 that detects the heartbeat of a seated occupant.

[0086] <<Second embodiment>> Next, a vehicle seat 10A according to a second embodiment will be described. Fig. 9 is a diagram showing a seat back 13A of the vehicle seat 10A, and is a diagram seen from the front with the cover 13b removed. Fig. 10 is a cross-sectional view taken along the line FF in Fig. 9.

[0087] The vehicle seat 10A of the second embodiment differs from the vehicle seat 10 of the first embodiment in that the vibration generators 23a, 23b and the heartbeat detection sensors 24b, 24c are disposed in the middle (position below the horizontal hanging groove 134b) of the bank portion 137. Since the other configurations are similar to those of the vehicle seat 10 of the first embodiment, the same reference numerals are used and detailed description is omitted.

[0088] 9 and 10, a plurality of vibration generators 23 and a heartbeat detection sensor 24 are disposed on the surface of the back pad 13a on the seat occupant side of the seat back 13A of the vehicle seat 10A. An airbag device 21 is disposed within the back pad 13a. More specifically, a near side airbag device 21N is disposed on the right side of the seat back 13A, and a far side airbag device 21F is provided on the left side.

[0089] A webbing 28 (guide member) that guides the deployment direction of the airbag 21a is provided on the surface of the bank portion 137 where the near-side airbag device 21N is located. The webbing 28 is composed of an upper webbing 28U disposed on the upper side and a lower webbing 28L disposed on the lower side thereof.

[0090] A vertical hanging groove 134a is formed in the back pad 13a, and the webbing 28 is attached to the vertical hanging groove 134a via a clip 13c (engagement member). More specifically, a hanging member 13h is provided on the tip of the bank covering portion 13bb of the skin 13b and the tips of the inner webbing 28Ua, 28La of the webbing 28, and the skin 13b and the webbing 28 are attached to the vertical hanging groove 134a by inserting the hanging member 13h into the clip 13c.

[0091] In the vehicle seat 10A of the second embodiment, the vibration generators 23a and 23b and the heartbeat detection sensors 24b and 24c are disposed in the middle of the bank portion 137 of the seat back 13A.

[0092] 9, the upper webbing 28U of the webbing 28 is disposed in a portion overlapping with the vibration generator 23a disposed in the middle of the bank portion 137. Furthermore, the upper webbing 28U of the webbing 28, the vibration generator 23a disposed in the middle of the bank portion 137, and the clip 13ca for attaching the upper webbing 28U are disposed at least partially at the same height in the seat up-down direction.

[0093] Additionally, the upper webbing 28U of the webbing 28 is disposed in a portion overlapping with the heartbeat detection sensor 24b disposed in the middle of the bank portion 137. Furthermore, at least a portion of the upper webbing 28U of the webbing 28, the vibration generator 23a, and the heartbeat detection sensor 24b are disposed at the same height in the seat up-down direction. By arranging the upper webbing 28U, the vibration generator 23a, and the heartbeat detection sensor 24b in this manner, the vehicle seat 10A can be made more compact in the vertical direction. The heartbeat detection sensor 24b is an example of a sensor that detects biological information of a seated person, and is not limited to this. The sensor that detects biological information may be, for example, a seating sensor.

[0094] As in the vehicle seat 10 of the first embodiment, the vehicle seat 10A has a plurality of kneading air cells 26 arranged in the back pad 13a of the seat back 13A. Specifically, as shown in FIG. 9, 14 kneading air cells 26 are arranged in the seat vertical direction or the seat width direction. Of the 14 kneading air cells 26, the kneading air cell 26a is arranged in the center of the seat back 13. The upper force cloth 28U of the force cloth 28, the vibration generator 23a, and the kneading air cell 26a are at least partially arranged at the same height in the seat vertical direction. By arranging the upper force cloth 28U, the vibration generator 23, and the kneading air cell 26a in this manner, the vehicle seat 10A can be made compact in the vertical direction.

[0095] Also, in the vehicle seat 10A of the second embodiment, a back pad 13a is provided with a folding device 30, and a portion of the seat back 13 is configured to be foldable by the folding device 30. The back pad 13a and the upholstery 13b of the seat back 13A follow the folding by the folding device 30 and bend at the pivot axis 31. That is, the back pad 13a has the pivot axis 31 as a portion where it folds in accordance with the folding. In the vehicle seat 10A of the second embodiment, the upper webbing 28U of the webbing 28 and the vibration generator 23 are disposed below the rotation axis 31. By disposing the upper force cloth 28U and the vibration generator 23 below the rotation axis 31, bending of the upper force cloth 28U and the vibration generator 23 can be suppressed.

[0096] <Method of Assembling Vehicle Seat 10A> A method of assembling the vehicle seat 10A according to the second embodiment will be described. The vehicle seat 10A of the second embodiment may be assembled by an assembly method including preparing a pad (back pad 13a), a vibration generating member (vibration generating device 23) provided in the pad, an airbag 21a provided within the pad, and a guide member (webbing 28) attached to a part of the pad for guiding the deployment direction of the airbag 21a, and arranging the guide member in a portion overlapping with the vibration generating member.

[0097] In addition, in the above-mentioned assembly method, the vehicle seat 10A may be assembled by an assembly method including the steps of forming a hanging groove 134 in the back pad 13a, attaching the guide member to the hanging groove 134 via an engaging member (clip 13c), and arranging the guide member, the vibration generating member, and the engaging member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0098] Moreover, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes disposing the vibration generating member on the surface of the back pad 13a facing the seat occupant.

[0099] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing kneading members (kneading air cells 26) that are provided in the back pad 13a and knead the seated occupant, and arranging the guide members, vibration generating members and kneading members so that at least portions of them are at the same height in the vertical direction of the seat.

[0100] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing a sensor (heart rate detection sensor 24) that is provided on the back pad 13a and detects the biological information of the seated occupant, and arranging the guide member, the vibration generating member, and the sensor so that at least a portion of them are at the same height in the vertical direction of the seat.

[0101] Moreover, the vehicle seat 10A may be assembled by the above-described assembly method, in which the sensor is a heartbeat detection sensor 24 that detects the heartbeat of a seated occupant.

[0102] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing the folding device 30 in the back pad 13a, having a rotation axis 31 at which the back pad 13a folds in response to the folding of the folding device 30, and arranging the guide member and the vibration generating member below the rotation axis 31.

[0103] In addition, the vehicle seat 10A may be assembled by an assembly method including the steps of preparing a pad and a sensor (heart rate detection sensor 24) that is provided on the pad and detects the biological information of the seated occupant, preparing an airbag 21a provided in the pad and a guide member (webbing 28) that is attached to a part of the pad and guides the deployment direction of the airbag 21a, and positioning the guide member in a portion that overlaps with the sensor.

[0104] In addition, in the above-mentioned assembly method, the vehicle seat 10A may be assembled by an assembly method including: forming a hanging groove 134 in the back pad 13a; attaching the guide member to the hanging groove 134 via an engaging member (clip 13c); and arranging the guide member, the sensor, and the engaging member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0105] Moreover, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes disposing the sensor on the surface of the pad facing the seat occupant.

[0106] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing kneading members (kneading air cells 26) that are provided on the pad and knead the seat occupant, and arranging the guide members, the sensor, and the kneading members so that at least a portion of them are at the same height in the vertical direction of the seat.

[0107] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing a vibration generating member (vibration generating device 23) to be provided on the pad, and arranging the guide member, the sensor and the vibration generating member so that at least a portion of them are at the same height in the vertical direction of the seat.

[0108] In addition, the vehicle seat 10A may be assembled by the above-mentioned assembly method, which includes preparing a folding device 30 within the pad, having a pivot axis 31 at which the pad folds in response to the folding of the folding device 30, and arranging the guide member and the sensor below the pivot axis 31.

[0109] Moreover, the vehicle seat 10A may be assembled by the above-described assembly method, in which the sensor is the heartbeat detection sensor 24 that detects the heartbeat of the seated occupant.

[0110] The vehicle seats 10, 10A according to the present embodiment have been described above with reference to the drawings. The vehicle seats 10, 10A according to the present embodiment are mounted on a vehicle, but the present invention is not limited to seats mounted on vehicles that run on ground and have wheels, such as automobiles and trains, and may also be applied to seats mounted on aircraft, ships, and other vehicles that move on non-ground surfaces. [Explanation of symbols]

[0111] 10, 10A Vehicle seats 11 Seat body 12 Seat cushion 121 Seat cushion frame 121a Cushion side frame 121b Front connecting frame 121c joint frame 121d Rear connecting frame 121e Pan Frame 12a Cushion pad (pad) 12b Epidermis 13 Seat back 131 Seat back frame 131a Backside Frame 131b Upper Frame 131c Lower frame 132 Pressure Plate 133 Back Support Air Cell 134 Hanging groove 134a Vertical hanging groove 134b Horizontal hanging groove 135 Headrest holder 136 Seat 137 Bank 13a Back pad (pad) 13b Epidermis 13ba Seat cover 13bb Bank covering part 13bc Side Coverage 13bd Back cover part 13c, 13ca Clip (engagement member) 13d Wire Fastener 13e Breaking part 13f Gluing point 13h Suspension member 13j Suture section 14 Headrest 15 Ottoman 16 Movable mechanism 17 Reclining device 18 Slide rail device 181 Lower rail 182 Upper Rail 19 Rotating device 191 Base Plate 192 Rotating parts 193 Upper Plate 20 Link device 21 Airbag device 21F Far side airbag device 21N Near side airbag device 21a Airbag 21b Inflator 21c Case 23, 23a, 23b Vibration generating device (vibration generating member) 24, 24a, 24b Heart rate detection sensor (sensor) 26, 26a Air cell for kneading (component for kneading) 27 Air vent 28 Rikifu 28U upper force cloth 28Ua Inner force cloth 28Ub Outer force cloth 28L Lower force cloth 28La inner webbing 28Lb outer force cloth 30 Center-folding device 31 Rotation axis 32 Air conditioning duct 33 Blower 34 Duct connection FL Vehicle floor

Claims

1. Pads and A skin covering the pad; a vibration generating member provided on the pad; an airbag provided within the pad; The skin located on the seat front side of the airbag is bonded to a part of the pad, A vehicle seat, characterized in that an adhesion portion where the cover and the pad are adhered is disposed at a position not overlapping with the vibration generating member.

2. 2. The vehicle seat according to claim 1, wherein at least a portion of the adhesive portion and the vibration generating member are disposed at the same height in the vertical direction of the seat.

3. 3. The vehicle seat according to claim 1, wherein the vibration generating member is disposed on a surface of the pad facing a seat occupant.

4. The pad is provided with a kneading member for kneading a seated person, 2. The vehicle seat according to claim 1, wherein at least a portion of the adhesive portions, the vibration generating members, and the kneading members are disposed at the same height in the vertical direction of the seat.

5. A sensor is provided on the pad to detect biological information of a seated occupant, 2. The vehicle seat according to claim 1, wherein the adhesive portion, the vibration generating member, and the sensor are at least partially disposed at the same height in the vertical direction of the seat.

6. 6. The vehicle seat according to claim 5, wherein the sensor is a heartbeat detection sensor that detects the heartbeat of a seated occupant.

7. A folding device is provided within the pad; The pad has a pivot axis at which the pad folds in accordance with the folding of the folding device, 2. The vehicle seat according to claim 1, wherein the adhesive portion and the vibration generating member are disposed below the pivot axis.

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