Abstract
A vehicle seat including a panel and an actuating mechanism. The panel includes an elastomeric material. The actuating mechanism is connected to the panel. The actuating mechanism is configured to alter a contour of a seating surface of the panel.
Claims
1. A vehicle seat, comprising: a panel comprising an elastomeric material; an actuating mechanism connected to said panel, said actuating mechanism being configured to alter a contour of a seating surface of said panel.
2. A vehicle seat in accordance with claim 1, wherein said panel comprises an integrated flexural rotation member defining at least one pivot point of said panel.
3. A vehicle seat in accordance with claim 2, further comprising: a seat cushion comprising said panel, said seating surface being configured to engage at least a leg portion of a user.
4. A vehicle seat in accordance with claim 2, further comprising: a seatback structure comprising said panel, said seating surface being configured to engage at least a lumbar portion of a user.
5. A vehicle seat in accordance with claim 4, wherein said actuating mechanism comprises a constraining and driving structure, said constraining and driving structure comprising a driving member and a pivotable constraining and driving seatback structure, said driving member being in contact with said pivotable constraining and driving seatback structure, at least a portion of said pivotable constraining and driving seatback structure being in contact with said seatback structure.
6. A vehicle seat in accordance with claim 5, wherein said driving member is actuated such that at least a portion of said constraining and driving seatback structure pivots a lateral portion of said seatback structure in one or more of an inward direction toward a user of the seatback structure and an outward direction away from the user of the seatback structure, said lateral portion defining a bolster of said seatback structure.
7. A vehicle seat in accordance with claim 5, wherein said seatback structure is integrally connected to said pivotable constraining and driving seatback structure, wherein a portion of said seatback structure forms said pivotable constraining and driving seatback structure.
8. A vehicle seat in accordance with claim 1, wherein said panel structure comprises thermoplastic elastomer, said panel being a single, integrally formed, one-piece panel.
9. A vehicle seat, comprising: a panel comprising an elastomeric material; an actuating mechanism connected to said panel, wherein actuation of said actuating mechanism one of increases and decreases bolster support of said panel.
10. A vehicle seat in accordance with claim 9, further comprising: a seat cushion comprising said panel, said seat cushion comprising a seating surface configured to engage at least leg portion of a user.
11. A vehicle seat in accordance with claim 9, further comprising: a seatback structure comprising said panel, said seatback structure comprising a seating surface configured to engage at least a lumbar portion of a user.
12. A vehicle seat in accordance with claim 9, wherein said actuating mechanism comprises a constraining and driving structure, said constraining and driving structure comprising a driving member and a pivotable constraining and driving seatback structure, said driving member being in contact with said pivotable constraining and driving seatback structure, at least a portion of said pivotable constraining and driving seatback structure being in contact with said seatback structure.
13. A vehicle seat in accordance with claim 12, wherein said driving member is actuated such that at least a portion of said constraining and driving seatback structure pivots a lateral portion of said seatback structure in an inward direction toward a user of the seatback structure, said lateral portion defining a bolster of said seatback structure.
14. A vehicle seat in accordance with claim 12, wherein said seatback structure is integrally connected to said pivotable constraining and driving seatback structure, wherein a portion of said seatback structure forms said pivotable constraining and driving seatback structure.
15. A vehicle seat in accordance with claim 9, wherein said panel comprises thermoplastic elastomer, said panel being a single, integrally formed, one-piece panel.
16. A vehicle seat, comprising: a one-piece panel comprising an elastomeric material; an actuating mechanism connected to said panel, wherein actuation of said actuating mechanism changes a contour of a seating surface of said panel such that said contour of said panel comprises one of increased side support of a user of the one-piece panel and decreased side support of the user of said one-piece panel.
17. A vehicle seat in accordance with claim 16, further comprising: a seat cushion comprising said panel, said seating surface being configured to engage at least a leg portion of a user.
18. A vehicle seat in accordance with claim 16, further comprising: a seatback structure comprising said panel, said seating surface being configured to engage at least a lumbar portion of a user.
19. A vehicle seat in accordance with claim 18, wherein said actuating mechanism comprises a constraining and driving structure, said constraining and driving structure comprising a driving member and a pivotable constraining and driving seatback structure, said driving member being in contact with said pivotable constraining and driving seatback structure, at least a portion of said pivotable constraining and driving seatback structure being in contact with said seatback structure.
20. A vehicle seat in accordance with claim 19, wherein said driving member is actuated such that at least a portion of said constraining and driving seatback structure pivots a lateral portion of said seatback structure in an inward direction toward a user of the seatback structure, said lateral portion defining a bolster of said seatback structure.
21. A vehicle seat in accordance with claim 20, wherein said seatback structure is integrally connected to said pivotable constraining and driving seatback structure, wherein a portion of said seatback structure forms said pivotable constraining and driving seatback structure.
22. A vehicle seat in accordance with claim 16, wherein said seatback structure comprises thermoplastic elastomer.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the drawings:
[0023] FIG. 1 is a partial perspective view of a seat structure having a seatback structure with decreased bolster support;
[0024] FIG. 2 is a partial perspective of the seat structure of FIG. 1 the seatback structure having increased bolster support;
[0025] FIG. 3 is a front perspective view of a seatback structure;
[0026] FIG. 4 is a rear perspective view of the seatback structure of FIG. 3;
[0027] FIG. 5 is an enlarged view of an actuating mechanism associated with the seatback structure of FIG. 4;
[0028] FIG. 6 is a top sectional view of the actuating mechanism shown in FIG. 5;
[0029] FIG. 7 is a top view of the seatback of FIGS. 1 and 4 having decreased bolster support;
[0030] FIG. 8 is a top view of the seatback of FIGS. 1 and 4 having increased bolster support;
[0031] FIG. 9 is a sectional view of a seatback structure connected to the actuating mechanism of FIG. 5;
[0032] FIG. 10 is a rear perspective view of a seatback structure connected to an actuating mechanism;
[0033] FIG. 11 is a sectional view of the seatback structure connected to the actuating mechanism shown in FIG. 10;
[0034] FIG. 12 is a sectional view of a seatback structure connected to an actuating mechanism;
[0035] FIG. 13 is a sectional view of an actuating mechanism connected to a cushion of a seat structure;
[0036] FIG. 14 is another sectional view of an actuating mechanism connected to a cushion of a seat structure;
[0037] FIG. 15 is a sectional view of a seatback structure connected to an actuating mechanism;
[0038] FIG. 16 is another sectional view of the seatback structure and the actuating mechanism of FIG. 15;
[0039] FIG. 17 is a sectional view of another embodiment of an actuating mechanism and a seatback structure;
[0040] FIG. 18 is a sectional view showing the forward state and the rearward state of the seatback structure of FIG. 17;
[0041] FIG. 19 is an enlarged view of the actuating mechanism and the seatback structure of FIG. 17;
[0042] FIG. 20 is a partial perspective view of the seatback structure of FIG. 17;
[0043] FIG. 21 is a side view of the seatback structure of FIG. 17; and
[0044] FIG. 22 is a sectional view of another embodiment of an actuating mechanism and a seatback structure.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0045] Referring to the drawings in particular, FIG. 1 is a partial perspective view of a seat structure 1. The seat structure 1 includes an user support structure (cushion) 3. The user support structure 3 has a user support structure surface 5 for engaging at least a buttock portion and a leg portion of a user. The user support structure 3 is connected to a seatback structure 7. The seatback structure 7 has a seatback structure surface 9. The seatback structure surface 9 engages at least a lumbar portion and a shoulder portion of the user. The user support structure 3 and the seatback structure 7 may be formed of any elastomeric material, but the user support structure 3 and the seatback structure 7 are preferably formed of thermoplastic elastomers (TPE). The user support structure 3 may be formed in one-piece to provide an integrally formed one-piece user support structure 3. The seatback structure 7 may be formed in one-piece to provide an integrally formed one piece seatback structure.
[0046] A seatback actuating mechanism 11 is connected to the seatback structure 7 on one side of the seatback structure 7 as shown in FIG. 1 and FIG. 2. Another seatback actuating mechanism (not shown in FIG. 1 and FIG. 2), which is identical to the seatback actuating mechanism 11, is provided on another side of the seatback structure 7. The two seatback actuating mechanisms may be independently controlled or the two seatback actuating mechanisms may be connected such that both seatback actuating mechanisms move simultaneously. In order to avoid repetition, only the seatback actuating mechanism 11 will be discussed as it is understood that the structure of each seatback actuating mechanism is the same in FIGS. 1 and 2. Actuation of the seatback actuating mechanism 11 changes a contour of the seatback structure surface 9 so that the seatback structure 7 has a flatter contour or a more arcuate (curved) contour.
[0047] The seatback actuating mechanism 11 includes pivotable seatback constraining/driving structure 17 that includes a driving/constraining member 13, a pivotable seatback constraining/driving first element 19 and a pivotable seatback constraining/driving second element 21. The pivotable seatback constraining/driving first element 19 and/or the pivotable seatback constraining/driving second element 21 may be integrally connected to the seatback structure 7 such that a portion of the seatback structure 7 forms the pivotable seatback constraining/driving first element 19 and/or the pivotable seatback constraining/driving second element 21. The driving/constraining member 13 may be in the form of a rod 15, but it is understood that any other structure may be provided. The rod 15 is connected to the pivotable seatback constraining/driving second element 21. The pivotable seatback constraining/driving first element 19 and the pivotable seatback constraining/driving second element 21 form a hinge, but it is understood that any other suitable structure may be used. The pivotable seatback constraining/driving first element 19 is connected to the pivotable seatback constraining/driving second element 21 via a connector element 23 such that the pivotable seatback constraining/driving second element 21 is pivotable relative to the pivotable seatback constraining/driving first element 19 about axis A. The connector element 23 is shown in a form of a pin 25 (see FIG. 2), but it is understood that any type of connector may be used to connect the pivotable seatback constraining/driving first element 19 to the pivotable seatback constraining/driving second element 21. The pivotable seatback constraining/driving first element 19 is fixed to a seat support structure 27. A motor 29 is provided in an interior of the seat support structure 27. The motor 29 is connected to a shaft 31 and the shaft 31 is connected to the driving/constraining member 13. Actuation of the motor 29 drives the shaft 31, which then drives the driving/constraining member 13 such the driving/constraining member 13 extends in a direction of the seatback structure 7. As driving/constraining member 13 extends in the direction of the seatback structure 7, the pivotable panel support structure second element 21 pivots relative to the pivotable panel support structure first element 19 in an inward direction I toward the user, which causes a side portion of the seatback structure 1 to be pressed in the inward direction I toward the user to provide the user with an increased bolster support, which changes the contour of the seatback structure surface 9. FIG. 1 shows the contour of the seatback structure surface 9 having a bolster support that is less than the bolster support shown in FIG. 2. In FIG. 1, the contour of the seatback structure surface 9 is flatter when compared with the contour of the seatback structure surface 9 shown in FIG. 2. When the pivotable seatback constraining/driving second element 21 pivots relative to the pivotable seatback constraining/driving first element 19 in the inward direction I toward the user, the contour of the seatback structure surface 9 changes to a more arcuate contour that provides the increased bolster support.
[0048] FIG. 2 is a partial perspective view of the seat structure 1 of FIG. 1. FIG. 2 shows the seatback structure 7 with the increased bolster support. Due to the increased bolster support, the contour of the seatback structure surface 9 is more arcuate than the contour of the seatback structure surface 9 shown in FIG. 1. Multiple actuating mechanisms 11 can be connected to the seatback structure 7 such that multiple segments of the seatback structure 7 can have different contours.
[0049] FIG. 3 is a front perspective view of a seatback structure 7. The seatback structure 7 is exactly the same as the seatback structure 7, except that a different actuating mechanism 11 is used to change the contour of the seatback structure 7.
[0050] FIG. 4 is a rear perspective view of the seatback structure 7. A seatback connecting structure 13 is connected to a rear surface 14 of the seatback structure 7. The seatback connecting structure 13 is shown in a form of a tube 15, however it is understood that any suitable connecting structure may be used. The actuating mechanism 11 includes a seatback driving/constraining structure 18. The driving/constraining structure 18 includes an actuator structure 17, which is shown in the form of a cable 19. The driving/constraining structure 18 includes another actuating structure 21. The another actuating structure 21 is in the form of a cable 23. The driving/constraining structure 18 includes an actuator 25. The actuator 25 includes a motor 29 and a threaded screw shaft 27. The threaded screw shaft 27 has a first threaded region 39 and a second threaded region 41 with threads of the first threaded region being oriented in a direction opposite threads of the second threaded region 41. The threaded screw shaft 27 is connected to a movable cable connector 31 and a movable cable connector 35. The movable cable connector 31 includes a threaded nut 33 that has threads that engage threads of the threaded region 39 of the threaded screw shaft 27 and the movable cable connector includes a threaded nut 37 that has threads that engage the threads of the threaded region 41 of the threaded screw shaft 27 such that the threaded nut 33 and the threaded nut 37 rotate when the threaded screw shaft 27 is rotated. One end of the cable 19 is connected to the movable cable connector 35 and another end of the cable 19 is connected to a driving/constraining element 43. One end of the cable 23 is connected to the movable cable connector 31 and another end of the cable 23 is connected to the driving/constraining element 43. The driving/constraining element 43 is pivotably mounted to a seatback structure frame 45. When the threaded screw shaft 27 is rotated in a first direction, the cable 19 is pushed and the cable 23 is pulled such that the driving/constraining element 43 rotates in the inward direction I toward the user so that a side portion 46 of the seatback structure 7 is moved in the inward direction I toward the user to provide the user with increased bolster support, which changes the contour of the seatback structure surface 9. When the threaded screw shaft 27 is rotated in a second direction, which is opposite the first direction, the cable 17 is pulled and the cable 23 is pushed such that the driving/constraining element 43 rotates in an outward direction away from the user so that the side portion of the seatback structure 7 is moved in the outward direction away from the user to provide the user with decreased bolster support, which changes the contour of the seatback structure surface 9 such the contour of the seatback structure 9 is less arcuate. Another actuating mechanism, which is identical to the actuating mechanism 11, may be provided to actuate another driving/constraining element 47 to adjust another side portion 49 of the seatback structure 7. The driving/constraining element 47 and the driving/constraining element 43 may be moved simultaneously via actuation of the motor 25. In another embodiment, the driving/constraining element 47 and the driving/constraining element 43 may be actuated independently via different motors.
[0051] FIG. 5 is an enlarged view of the actuating mechanism 11.
[0052] FIG. 6 is a top sectional view of the actuating mechanism 11. When the cable 23 is pulled, the side portion of the seatback structure 7 is moved in the inward direction I toward the user to provide the user with increased bolster support. When the cable 19 is pulled, the side portion of the seatback structure 7 is moved in the outward direction away from the user to provide the user with less bolster support, which provides the seatback structure surface 9 with a flatter contour when compared to the contour of the seatback structure surface 9 when the cable 19 is pulled. Multiple actuating mechanisms 11 can be connected to the seatback structure 7 such that multiple segments of the seatback structure 7 can have different contours.
[0053] FIG. 7 and FIG. 8 are top views of the seatback structure 7, 7. In FIG. 7, the contour of the seatback structure surface 9, 9 has a decreased bolster support. In FIG. 8, the contour of the seatback structure 9, 9 has an increased bolster support and a more arcuate contour when compared with the contour of the seatback structure 9, 9 shown in FIG. 7.
[0054] FIG. 9 is another sectional view of the actuating mechanism 11. The cable 19 is supported by a cable support structure 55, which is connected to the seatback frame structure 45. The seatback frame structure 45 has an opening 51. The cable 23 extends through the opening 51. The cable 23 is supported by a cable support structure 53, which is connected to the seatback frame structure 45. The threaded region 41 of the threaded screw shaft 27 is shown with a right-hand thread. The threaded region 39 is shown with a left-hand thread. When the threaded screw shaft 27 is rotated in the first direction, the movable cable connector 35 and the movable cable connector 31 move toward each other so that the cable connector cable 19 is pushed and the cable 23 is pulled such that the driving/constraining element 43 rotates in the inward direction I toward the user so that a side portion 46 of the seatback structure 7 is moved in the inward direction I toward the user to provide the user with increased bolster support. When the threaded screw shaft 27 is rotated in the second direction, the cable connector 31 and the cable connector 35 move away from each other such that the cable connector 35 pulls the cable 17 and the cable connector pushes the cable 21 such that the driving/constraining element 43 rotates in the outward direction away from the user so that the side portion of the seatback structure 7 is moved in the outward direction away from the user to provide the user with decreased bolster support. Another actuating mechanism, which is identical to the actuating mechanism 11, may be provided to actuate another driving/constraining element to adjust another side portion of the seatback structure 7. The two driving/constraining elements may be moved simultaneously via actuation of the actuator 25. In another embodiment, the driving/constraining elements may be actuated independently via different actuators.
[0055] FIG. 10 is a rear perspective view of another seatback structure 7. The seatback structure 7 is exactly the same as the seatback structure 7 and the seatback structure 7, except that a different actuating mechanism 11 is used to change the contour of a seatback structure surface 9 of the seatback structure 7. The seatback structure 9 engages and supports the user. The actuating mechanism 11 may be mounted to a rear surface 14 of the seatback structure 7.
[0056] FIG. 11 is a sectional view of the actuating mechanism 11 and the seatback structure 7. The actuating mechanism 11 includes a seatback driving/constraining structure 18. The driving/constraining structure 18 includes an actuator structure 17, which is shown in the form of a cable 19. The driving/constraining structure 18 includes another actuating structure 21. The another actuating structure 21 is in the form of a cable 23. The driving/constraining structure 18 includes an actuator 25. The actuator 25 includes a motor 26 and a rotatable structure 27. The rotatable structure 27 includes a drum 29. One end of the cable 23 is connected to the rotatable structure 27 and another end of the cable 23 is connected to a driving constraining element 43. The driving/constraining element 43 is connected to the seatback structure 7. One end of the cable 19 is connected to the rotatable structure 27 and another end of the cable 19 is connected to the driving/constraining element 43. The driving/constraining element 43 is pivotably mounted to a seatback structure frame 45. The cable 19 is supported by a cable support structure 55, which is connected to the seatback frame structure 45. The seatback frame structure 45 has an opening 51. The cable 23 extends through the opening 51. The cable 23 is supported by a cable support structure 53, which is connected to the seatback frame structure 45. When the rotatable structure 27 is rotated in a first direction B, the cable 19 is pushed and the cable 23 is pulled such that the driving/constraining element 43 rotates in the inward direction I toward the user so that a side portion 46 of the seatback structure 7 is moved in the inward direction I toward the user to provide the user with increased bolster support, which changes the contour of the seatback structure surface 9. When the rotatable structure 27 is rotated in a second direction C, which is opposite the first direction, the cable 17 is pulled and the cable 23 is pushed such that the driving/constraining element 43 rotates in the outward direction away from the user so that the side portion 46 of the seatback structure 7 is moved in the outward direction away from the user to provide the user with decreased bolster support, which changes the contour of the seatback structure surface 9 such the contour of the seatback structure 9 is less arcuate. Another actuating mechanism, which is identical to the actuating mechanism 11, may be provided to actuate another driving/constraining element to adjust another side portion of the seatback structure 7. The two driving/constraining elements may be moved simultaneously via actuation of the actuator 25. In another embodiment, the driving/constraining elements may be actuated independently via different actuators.
[0057] FIG. 12 is a rear perspective view of another seatback structure 7. The seatback structure 7 is exactly the same as the seatback structures previously discussed above, except that a different actuating mechanism 11 is used to change the contour of a seatback structure surface 9 of the seatback structure 7. The seatback structure 9 engages and supports the user. The actuating mechanism 11 includes a seatback driving/constraining structure 18. The driving/constraining structure 18 includes a rotatable structure 27 that is connected to an actuator 25. The actuator 25 may be in the form of a motor or a manually actuated knob. The rotatable structure 27 includes a shaft 29 having a threaded region 39 and a threaded region 41. The rotatable structure 27 is supported by a seatback frame structure 45, which has a seatback structure frame portion 49 and a seatback structure frame portion 51 that is located at a spaced location from the seatback structure frame portion 49. Threads of the threaded region 39 are oriented in a direction opposite threads of the threaded region 41. A lateral constraint element 53 is connected to the seatback structure frame portion 49. A driving/constraining element 43 is pivotably connected to the seatback structure frame portion 49. A driving/constraining element 47 is pivotably connected to the seatback structure frame portion 51. The driving/constraining element 43 has threads that engage the threaded region 39. The driving/constraining element 47 has threads that engage the threaded region 41. When the rotatable structure rotates in a first direction B, the driving/constraining element 43 and the driving/constraining element 47 simultaneously pivot in an inward direction I toward the user such that a side portion 46 of the seatback structure 7 and a side portion 55 are moved in the inward direction I toward the user to provide the user with increased bolster support, which changes the contour of the seatback structure surface 9. When the rotatable structure rotates in a second direction C, which is opposite the first direction B, the driving/constraining element 43 and the driving/constraining element 47 pivot in an outward direction O away from the user such that the side portion 46 of the seatback structure 7 and the side portion 55 are moved in the outward direction O away from the user to provide the user with decreased bolster support, which changes the contour of the seatback structure surface 9.
[0058] Although various actuating mechanisms have been described, it is understand that any suitable actuating mechanism may be used, including but not limited to a bellcrank and a direct drive.
[0059] One or more of the various actuating mechanisms may be connected to the cushion 3 to move a lateral portion 4 of the cushion 3 and another lateral portion 6 of the cushion 3 to provide increased lateral (bolster) cushion support to the user. FIG. 13 is a sectional view of the actuating mechanism 11 connected to the cushion 3 for simultaneously moving lateral portions 4, 6 of the cushion to increase and decrease cushion bolster support for a user. The actuating mechanism 11 can be actuated such that the lateral portion 4 and the lateral portion 6 move in an inward direction I toward the user to provide the user with increased cushion bolster support, which changes the contour of a user engaging surface of the cushion 3, which engages and supports at least a portion of a user's legs and buttocks. The actuating mechanism 11 can be actuated such that the lateral portion 4 and the lateral portion 6 move in an outward direction O away from the user to provide the user with decreased cushion bolster support, which changes the contour of the cushion 3. FIG. 14 shows the actuating mechanism 11 connected to the cushion 3 for moving lateral portions 4, 6 of the cushion 3 to increase and decrease cushion bolster support for the user. The actuating mechanism 11 can be actuated such that the lateral portion 4 and the lateral portion 6 move in the inward direction I toward the user to provide the user with increased cushion bolster support, which changes the contour of the cushion 3. The actuating mechanism 11 can be actuated such that the lateral portion 4 and the lateral portion 6 move in an outward direction O away from the user to provide the user with decreased cushion bolster support, which changes the contour of the cushion surface 3. Although only two examples have been shown and discussed, it is understood that any of the actuating mechanisms discussed above may be used to move the lateral portions 4, 6 of the cushion 3 to alter the contour of the user engaging surface of the cushion 3.
[0060] FIG. 15 is a sectional view of an actuating mechanism 11 and a seatback structure 7. The seatback structure 7 may be formed of any elastomeric material, but the seatback structure 7 is preferably formed of thermoplastic elastomers (TPE). The seatback structure 7 may be formed in one-piece to provide an integrally formed one piece seatback structure. The actuating mechanism 11 includes a seatback driving/constraining structure 18. The driving/constraining structure 18 includes an actuator structure 17, which is shown in the form of a cable 19. An actuator 25 is connected to the actuator structure 17. The actuator structure 17 may include a motor 26. One end of the actuator structure 17 is connected to the actuator and another end of the actuator structure 17 is connected to a driving/constraining element 43. The driving/constraining element 43 is formed as an integral part of the seatback structure 7 such that the driving/constraining element 43 is integrally connected to the seatback structure 7 and is formed in one piece with the seatback structure 7. The driving/constraining element 43 is pivotably connected to a seatback structure frame 45 via a seatback connecting member 48. In FIG. 15, the seatback connecting member 48 is integrally connected to the driving/constraining element 43 such that the seatback frame connecting member 48 and the driving/constraining element 43 are formed in one piece, however it is understood that the seatback connecting frame member 48 may be a separate component from the driving/constraining element 43. The seatback connecting frame member 48 engages a seatback structure frame portion 49 of the seatback structure frame 45. When the actuator is actuated 25, the actuator structure 17 is pulled such that the driving/constraining element 43 rotates in the outward direction away from the user so that a side portion 46 of the seatback structure 7 is moved in the outward direction O away from the user to provide the user with decreased bolster support, which changes the contour of a seatback structure surface 9 of the seatback structure 7 such the contour of the seatback structure 9 is less arcuate (flatter). FIG. 16 is a sectional view of the seatback structure 7 providing decreased bolster support as a result of the actuating mechanism pulling the actuating structure 17. When the actuator 25 is actuated such that tension in the actuating structure 17 is decreased, the driving/constraining element 43 rotates in the inward direction I in the direction of the user due to the elastomeric properties of the seatback structure 17 to provide the user with increased bolster support, which changes the contour of the seatback structure 9 such the contour of the seatback structure 9 is more arcuate (curved). The elastomeric properties of the seatback structure 9 allows for a hinge to be incorporated directly in the seatback structure 9, which simplifies construction and provides for a simpler design. Another actuating mechanism, which is identical to the actuating mechanism 11, may be provided to actuate another driving/constraining element, which is identical to the driving/constraining element 43, to adjust another side portion of the seatback structure 7. The two driving/constraining elements may be moved simultaneously via actuation of the actuator. In another embodiment, the driving/constraining elements may be actuated independently via different actuators.
[0061] FIG. 17 is a sectional view of an actuating mechanism 11 and a seatback structure 7. A driving/constraining structure 18 is connected to the actuating mechanism 11. The actuating mechanism 11 includes a rotatable threaded structure 27. The driving/constraining structure 18 includes two cables 19, 23. One end of the cable 19 is connected to the rotatable threaded structure 27 by a cable connector 22. Another end of the cable 19 is connected to the seatback structure 7. One end of the cable 23 is connected to the rotatable threaded structure 27 by a cable connector 20. Another end of the cable 23 is connected to the seatback structure 7. Each of the cable connectors 20, 22 has threads that engage threads of the rotatable threaded structure 27. The rotatable threaded structure 7 is connected to a motor 26 that can be actuated to rotate the threaded structure 7. Rotation of the rotatable threaded structure 27 in a first rotational direction causes the cable connector 20 and the cable connector 22 to move in a direction of one another, which causes the cable 19 to pull on a respective portion of the seatback structure 7 and causes the cable 23 to pull a respective portion of the seatback structure 7 such that the seatback structure 7 moves to a forward state 52 and lateral side portions 8, 10 move in the outward direction O as shown in FIG. 18. Rotation of the rotatable threaded structure 27 in a second rotational direction, which is opposite the first rotational direction, causes the cable connector 20 and the cable connector 22 to move in a direction away from each other, which releases the tension in the cable 19 and the cable 23 such that the seatback structure 7 moves to a rearward state 54 and lateral side portions 8, 10 move in the inward direction I as shown in FIG. 18. A spring 51 is provided between the cable connector 20 and the cable connector 22 and is connected to the cable connector 20 and the cable connector 23. The spring 51 allows the seatback structure 7 to go to the rearward state during a vehicular accident, which prevents whiplash to an occupant.
[0062] FIG. 18 is a sectional view showing the forward state and the rearward state of the seatback structure 7.
[0063] FIG. 19 is an enlarged view showing a connection of the cable 23 to the seatback structure 7. A cable connector structure 55 is connected to a rear surface 6 of the seatback structure 7. The cable connector structure 55 includes a rotatable connecting structure 56, which is pivotably connected to connectors 58, 60. The connectors 58, 60 are fixed directly to the rear surface 6 of the seatback structure 7. When the tension is increased in the cable 23 the rotatable connecting structure 56 rotates relative to the connectors 58, 60, which causes the lateral side portion 8 to pivot about an axis A of articulation. The connection of the cable 19 to the seatback structure 7 is exactly the same as shown in FIG. 19 and is not described in order to avoid repetition.
[0064] FIG. 20 is a partial perspective view of the seatback structure 7. The seatback structure 7 is fixed to a frame structure 2, which creates the axes A, B of articulation. The seatback structure 7 is shown in FIG. 20 as a compliant, single, one-piece panel. The lateral side portion 10 is pivotable about the axis B of articulation. The lateral side portion 8 is pivotable about the axis A of articulation.
[0065] FIG. 21 is a side view of the seatback structure 7 fixed to the frame structure 2.
[0066] FIG. 22 is a sectional view of a seatback structure 7 and an actuating mechanism 11. The actuating mechanism 11 is connected to a seatback driving/constraining member 22 and a seatback driving/constraining member 24. The driving/constraining members 22, 24 are connected to the seatback structure 7. The actuating mechanism 11 includes an actuator 25 wherein actuation of the actuator 25 moves the driving/constraining members 22, 24, which causes the contour of the seatback structure 7. When the driving/constraining members 22, 24 move toward each other, the seatback structure moves to the forward state 52 and the lateral side portions 8, 10 move in the outward direction O as shown in FIG. 18. When the driving/constraining members 22, 24 move in a direction away from each other, the seatback structure 7 moves to the rearward state 54 and the lateral side portions 8, 10 move in an inward direction I as shown in FIG. 18.
[0067] While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
[0068] While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.
LIST OF REFERENCE CHARACTERS
[0069] 1 Seat structure [0070] 3 User support structure (cushion) [0071] 4 Lateral (side) portion of cushion [0072] 5 User support structure (cushion) surface [0073] 6 Lateral (side) portion of cushion [0074] 7 Seatback structure [0075] 9 Seatback structure surface [0076] 11 Seatback actuating mechanism [0077] 13 Driving/constraining member [0078] 15 Rod [0079] 17 Pivotable seatback constraining/driving structure [0080] 19 Pivotable seatback constraining/driving first element [0081] 21 Pivotable seatback constraining/driving second element [0082] 23 Connector element [0083] 25 Pin [0084] 27 Seat support structure [0085] 29 Motor [0086] 31 Shaft [0087] 7 Seatback structure [0088] 9 Seatback structure surface [0089] 11 Seatback actuating mechanism [0090] 13 Seatback connecting structure [0091] 14 Rear surface of seatback structure [0092] 15 Tube [0093] 17 Actuating structure [0094] 18 Seatback driving/constraining structure [0095] 19 Cable [0096] 21 Actuating structure [0097] 23 Cable [0098] 25 Actuator [0099] 27 Dual direction screw [0100] A Axis [0101] A Axis [0102] B Axis [0103] 29 Motor [0104] 31 Movable cable connector [0105] 33 Nut [0106] 35 Movable cable connector [0107] 37 Nut [0108] 39 Threaded region [0109] 41 Threaded region [0110] 43 Driving/constraining element [0111] 45 Seatback structure frame [0112] 46 Side portion of the seatback structure [0113] 47 Driving/constraining element [0114] 49 Side portion of the seatback structure [0115] 51 Opening [0116] 53 Cable support structure [0117] 55 Cable support structure [0118] 7 Seatback structure [0119] 9 Seatback structure surface [0120] 11 Actuating mechanism [0121] 14 Rear surface of seatback structure [0122] 17 Actuating structure [0123] 18 Seatback driving/constraining structure [0124] 19 Cable [0125] 21 Actuating structure [0126] 23 Cable [0127] 25 Actuator [0128] 26 Motor [0129] 27 Rotatable member [0130] 29 Drum [0131] 43 Driving/constraining element [0132] 45 Seatback structure frame [0133] 51 Opening [0134] 53 Cable support structure [0135] 55 Cable support structure [0136] 7 Seatback structure [0137] 9 Seatback structure surface [0138] 11 Actuating mechanism [0139] 18 Driving/constraining structure [0140] 25 Actuator [0141] 27 Rotatable structure [0142] 29 Shaft [0143] 39 Threaded region [0144] 41 Threaded region [0145] 43 Driving/constraining element [0146] 45 Seatback structure frame [0147] 46 Lateral portion of seatback structure [0148] 47 Driving/constraining element [0149] 49 Seatback structure frame portion [0150] 51 Seatback structure frame portion [0151] 53 Lateral constraint structure [0152] B, B rotational direction [0153] C, C rotation direction [0154] I inward direction [0155] O outward direction [0156] 7 Seatback structure [0157] 9 Seatback structure surface [0158] 11 Actuating mechanism [0159] 17 Actuating structure [0160] 18 Driving/constraining structure [0161] 19 Cable [0162] 43 Driving/constraining element [0163] 45 Seatback structure frame [0164] 46 Lateral portion of seatback structure [0165] 48 Seatback frame connecting member [0166] 49 Seatback structure frame portion [0167] 2 Frame structure [0168] 6 Rear surface of seatback structure [0169] 7 Seatback structure [0170] 8 Lateral side portion [0171] 10 Lateral side portion [0172] 18 Driving/constraining structure [0173] 19 Cable [0174] 20 Cable connector [0175] 22 Cable connector [0176] 23 Cable [0177] 24 Threads [0178] 11 Actuating mechanism [0179] 27 Rotatable threaded structure [0180] 26 Motor [0181] 51 Spring [0182] 52 Forward state [0183] 54 Rearward state [0184] 55 Cable connector structure [0185] 56 Rotatable connecting structure [0186] 58 Connector [0187] 60 Connector [0188] 7 Seatback structure [0189] 8 Lateral side portion [0190] 10 Lateral side portion [0191] 11 Actuating mechanism [0192] 22 Seatback driving/constraining member [0193] 24 Seatback driving/constraining member [0194] 25 Actuator 25 [0195] 52 Forward state [0196] 54 Rearward state
