Seat assembly with cushion length adjustment driven by cushion tilt

Abstract

The invention relates to a seat assembly with cushion length adjustment driven by cushion tilt. A seat includes a frame, a cushion tray tiltable relative to the frame, a cushion adjuster, and a linkage assembly. A link assembly is connected between the frame and the pad tray, and is connected to the pad adjuster. When the pad is tilted relative to the frame, the link assembly actuates and acts on the pad adjuster starting from the tilt of the pad relative to the frame, thereby moving the pad adjuster.

Description

Technical Field

[0001] The present disclosure relates to a seat assembly having a reclinable bolster. BRIEF DESCRIPTION OF THE DRAWINGS

[0002] Figure 1 shows a perspective view of a seat assembly including a seat back and a seat bottom having a frame, a cushion pan tiltable relative to the frame, a cushion supported on the cushion pan, and a cushion adjuster movable to adjust the cushion;

[0003] Figure 2 A bottom view of a conventional seat bottom of a seat assembly is shown, the conventional seat bottom also having a motor for moving a cushion adjuster to adjust the cushion;

[0004] Figure 3A showing a bottom view of a seat bottom of a seat assembly, the seat bottom also having a linkage assembly for moving a cushion adjuster to adjust the cushion, wherein the linkage assembly is connected between the frame and the dolly and is connected to the cushion adjuster, and the linkage assembly actuates from tilting of the dolly relative to the frame and acts on the cushion adjuster to move the cushion adjuster when the dolly is tilted relative to the frame;

[0005] Figure 3B A perspective view of a pad adjuster and linkage assembly is shown;

[0006] Figure 4A A perspective view of a connecting rod assembly is shown;

[0007] Figure 4B Various views of components of a connecting rod assembly are shown, the components of the connecting rod assembly including a first bracket, a slider having a second bracket, a first link, a second link, a link bracket, and a dampener;

[0008] Figure 5A showing a bottom view of the seat bottom with components of the linkage assembly removed from view except for first and second brackets connecting the linkage assembly to the frame and the dolly, respectively;

[0009] Figure 5B An enlarged view of a slider of a connecting rod assembly is shown;

[0010] Fig. 6A shows a side schematic view of the seat bottom with the cushion adjuster in a retracted position and the cushion pan tilted downward relative to the frame;

[0011] Figure 6B shows a side schematic view of a seat bottom with the cushion adjuster in an extended position and the cushion pan tilted upward relative to the frame;

[0012] Fig. 7A A top view of the seat bottom is shown;

[0013] Figure 7B shows a bottom bottom view of the seat bottom; and

[0014] Figure 7C A bottom view of the seat bottom is shown.

[0015] Detailed Description

[0016] Detailed embodiments of the present disclosure are disclosed herein; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be embodied in various forms and alternative forms. The drawings are not necessarily to scale; some features may be exaggerated or reduced in order to illustrate the details of particular components. Therefore, the specific structural details and functional details disclosed herein should not be interpreted as limiting, but merely as a representative basis for teaching those skilled in the art to embody the present disclosure in a variety of ways.

[0017] Reference now Figure 1 , Figure 1 A perspective view of a seat assembly 10 is shown. The seat assembly 10 may be configured for use in an automotive vehicle. The seat assembly 10 includes a seat bottom 50 and a seat back 52. The seat back 52 may be pivotally disposed on the seat bottom 50.

[0018] The seat bottom 50 includes a frame 12. The frame 12 provides a load-bearing structure for the seat bottom 50. The frame 12 can be mounted to a mounting surface 54, such as a vehicle floor, to mount the seat bottom 50 to the mounting surface. The side members of the frame 12 can engage with track assemblies fixedly disposed on the mounting surface 54 to facilitate movement of the seat bottom 50 in a forward direction 56 and a rearward direction 58.

[0019] The seat bottom 50 further includes a cushion pan 14, a cushion 42, and a cushion adjuster 16. The cushion 42 is supported on the cushion pan 14. The cushion 42 is provided to make a passenger sitting on the seat bottom 50 feel comfortable. The cushion pan 14 can be tilted upward and downward relative to the frame 12. Since the cushion 42 is supported on the cushion pan 14, when the cushion pan is tilted upward, the cushion is tilted upward together with the cushion pan, and when the cushion pan is tilted downward, the cushion is tilted downward together with the cushion pan.

[0020] Pad adjuster 16 is engaged with pad 42 and is movable to adjust pad 42. Specifically, pad adjuster 16 is movable to adjust the length of pad 42. In this regard, when pad adjuster 16 is moved in a direction oriented along forward direction 56, pad adjuster 16 pushes pad 42, causing the pad to extend to a greater length. Conversely, when pad adjuster 16 is moved in a direction oriented along rearward direction 58, pad adjuster 16 pulls pad 42, causing the pad to retract to a lesser length.

[0021] The adjustable length of the pad 42 includes the following two different pad styles known to those of ordinary skill in the art. One pad style includes the pad 42 expanding to a greater length and compressing to a lesser length. Another pad style includes the pad 42 moving forward along the forward direction 56 to be in a more upstream position, thereby having a greater length relative to its initial position, and the pad 42 moving rearward along the rearward direction 58 to be in a more downstream position, thereby having a lesser length relative to its initial position.

[0022] The seat bottom 50 may also include a cushion tilt motor 40 (at Figure 7C ). The dolly tilt motor 40 provides motor power for the dolly 14 to enable the dolly 14 to automatically tilt upward and downward relative to the frame 12. Alternatively and / or additionally, the dolly 14 may be manually tilted upward and downward relative to the frame 12 by an occupant of the seat assembly 10.

[0023] Reference now Figure 2 , and continue to refer to Figure 1 , shows a bottom view of a conventional seat bottom 60 of the seat assembly 10. The conventional seat bottom 60 includes a frame 12, a cushion pan 14, a cushion adjuster 16, and a cushion pan tilt motor 40, as shown in FIG. Figure 2 The conventional seat bottom 60 also includes a cushion length adjustment (CLA) motor 62. The CLA motor 62 provides motor power for moving the cushion adjuster 16 to adjust the cushion 42.

[0024] According to an embodiment, the seat bottom 50 includes a CLA connector mechanism instead of the CLA motor 62 for moving the cushion adjuster 16 to adjust the cushion 42. The CLA connector mechanism is arranged in the seat bottom 50 so as to adjust the cushion 42 when the dolly 16 is tilted. That is, the CLA connector mechanism is driven by the tilt of the dolly 16 to cause the adjustment of the cushion 42. Specifically, when the dolly is tilted relative to the frame, the CLA connector mechanism converts the tilting motion resulting from the tilting of the dolly 14 relative to the frame 12 into a translation motion, and acts on the cushion adjuster 16 using the translation motion, thereby moving the cushion adjuster.

[0025] In other words, the CLA connector mechanism converts the rotational motion resulting from the tilting of the dolly 14 relative to the frame 12 into linear motion without the use of a motor. When the dolly 14 is tilted upward relative to the frame 12, the CLA connector mechanism converts the rotational motion into linear motion in a direction oriented along the forward direction 56, thereby causing the CLA connector mechanism to push the pad adjuster 16 forward. Conversely, when the dolly 14 is tilted downward relative to the frame 12, the CLA connector mechanism converts the rotational motion into linear motion in a direction oriented along the rearward direction 58, thereby causing the CLA connector mechanism to pull the pad adjuster 16 rearward.

[0026] Therefore, according to an embodiment, the seat assembly 10 having the seat bottom 50 is characterized by having a cushion length adjustment driven by seat tilt. The advantage of the seat bottom 50 having the CLA connector mechanism is that the CLA motor for pushing / pulling the cushion adjuster 16 is eliminated because the push / pull of the cushion adjuster is driven by the tilt of the cushion 42 (specifically, the cushion adjuster is driven by the tilt of the cushion support pan 14).

[0027] Reference now Figure 3A , and continue to refer to Figure 1 , shows a bottom view of a seat bottom 50. The seat bottom 50 has a linkage assembly 18 (i.e., a CLA connector mechanism) for moving the cushion adjuster 16 to adjust the cushion 42. The linkage assembly 18 is connected between the frame 12 and the dolly 14. The linkage assembly 18 is also connected to the cushion adjuster 16. When the dolly is tilted relative to the frame, the linkage assembly 18 is actuated starting from the tilting of the dolly 14 relative to the frame 12 and acts on the cushion adjuster 16, thereby moving the cushion adjuster. Figure 3B A perspective view of the pad adjuster 16 and the linkage assembly 18 is shown.

[0028] Reference now Figure 4A and Figure 4B , and continue to refer to Figure 3A and Figure 3B , the connecting rod assembly 18 will be explained in more detail. Figure 4A A perspective view of the connecting rod assembly 18 is shown. Figure 4B Various views of the components of the connecting rod assembly 18 are shown.

[0029] Typically, linkage assembly 18 includes a first linkage subassembly and a second linkage subassembly. The first linkage subassembly converts tilting motion from the tilting of dolly 14 relative to frame 12 into translational (or linear) motion. When dolly 14 tilts relative to frame 12, the second linkage subassembly acts on pad adjuster 16 according to the translational motion, thereby moving the pad adjuster.

[0030] Specifically, the first linkage subassembly includes a first bracket 24, a slider 28 having a second bracket 26, and a first connector 30. The first bracket 24 can be connected to the frame 12, such as to a side member of the frame. The second bracket can be connected to the dolly 14. The slider 28 can slide relative to the second bracket 26. The first connector 30 is connected between the first bracket 24 and the slider 28.

[0031] The second linkage subassembly includes a second link 32, a link bracket 34, and a damper 36. The second link 32 is connected between the slider 28 and a first end of the link bracket 34 through the damper 36. The second end of the link bracket 34 may be connected to the pad adjuster 16.

[0032] The first bracket 24 , the slider 28 with the second bracket 26 , the first link 30 , the second link 32 , the link bracket 34 , and the damper 36 are components of the linkage assembly 18 .

[0033] The first linkage subassembly (i.e., the first bracket 24, the slider 28 with the second bracket 26, and the first connector 30) is connected between the frame 12 and the dolly 16. Specifically, the first bracket 24 is connected to the frame 12, and the second bracket 26 is connected to the dolly 14. When connected to the frame 12 and the dolly, respectively, the first bracket 24 and the second bracket 26 do not have any relative movement. One end of the first connector 30 is connected to the first bracket 24, and the other end of the first connector 30 is connected to the slider 28. The first connector 30 receives the swinging motion from the tilt of the dolly 14 and acts on the slider 28 accordingly. The slider 28 converts the swinging motion from the first connector 30 into a translational motion.

[0034] The second link subassembly (i.e., the second link 32, the link bracket 34, and the damper 36) is connected between the first link subassembly and the pad adjuster 16. Specifically, the second link 32 is connected between the slider 28 and the first end of the link bracket 34 through the damper 36, and the link bracket 34 is connected to the pad adjuster 16 at its second end. According to the movement of the slider 28, the second link 32 pushes / pull the link bracket 34. The range of motion can be changed by utilizing the holes (shown but not numbered) of the second link 32. The damper 36 (i.e., the range of motion absorber / damper) includes a spring that absorbs the extra travel from the second link 32 when the link assembly 18 is pushing the pad adjuster 16. The link bracket 34 is connected to the damper 36 at its first end and is actually the component that pushes / pull the pad adjuster 16.

[0035] The connector bracket 34 is connected to the cushion adjuster 16 to act on the cushion adjuster. The connector bracket 34 is movable in a direction oriented in the forward direction 56 and in a direction oriented in the rearward direction 58. When the dolly 14 is tilted relative to the frame 12, the connector bracket 34 moves, thereby moving the cushion adjuster 16 when the dolly 14 is tilted relative to the frame. Specifically, when the dolly 14 is tilted upward relative to the frame 12, the connector bracket 34 acts on the cushion adjuster 16 to push the cushion 42 to an increased length, and when the dolly is tilted downward relative to the frame, the cushion is pulled to a decreased length.

[0036] In operation, when dolly 14 tilts relative to frame 12, first connector 30 tilts, and in accordance with the tilt of the first connector, slider 28 slides relative to second bracket 26. Second connector 32 actuates (i.e., moves) connector bracket 34 in accordance with the sliding of slider 28, and the connector bracket acts on pad adjuster 16 in accordance with the actuation of the second connector.

[0037] Reference now Figure 5A , and continue to refer to Figure 3A and Figure 4A , a bottom view of the seat bottom 50 with the components of the linkage assembly 18 other than the first bracket 24 and the second bracket 26 removed from view. Figure 5A As best shown in FIG. 1 , a first bracket 24 is connected to the frame 12 and a second bracket 26 is connected to the dolly 14 .

[0038] like Figure 5A As shown, the frame 12 includes a tilt tube 64, and the dolly 14 includes a swivel bracket 66. The swivel bracket 66 is pivotally supported on the tilt tube 64 to enable the dolly 14 to tilt upward and downward relative to the frame 12.

[0039] Figure 5B An enlarged view of the slider 28 of the connecting rod assembly 18 is shown. Figure 3A and Figure 4A As shown, and as described above, the slider 28 is slidably mounted on the second bracket 26 connected to the dolly 14. When the dolly 14 is tilted relative to the frame 12, the slider 28 slides relative to the second bracket 26.

[0040] Reference now Fig. 6A and Figure 6B , and continue to refer to Figure 3A , a side schematic view of the seat bottom 50 is shown. Fig. 6A and Figure 6B The frame 12, cushion pan 14 and cushion adjuster 16 of the seat bottom 50 are shown. The linkage assembly 18 (specifically the connector bracket 34) is located at Fig. 6A and Figure 6B Not shown in .

[0041] exist Fig. 6A In FIG. 1 , the pad adjuster 16 is in the retracted position (i.e., the design position) and the dolly 14 is tilted downward relative to the frame 12. This can be achieved by actuating the linkage assembly 18 in an actuation mode starting from the dolly 14 tilting downward relative to the frame 12 to pull the pad adjuster 16 toward the retracted position when the dolly 14 is tilted downward relative to the frame. Figure 6B In the embodiment, cushion adjuster 16 is in the extended position (i.e., the deployed position), and dolly 14 is tilted upward relative to frame 12. This can be achieved by actuating linkage assembly 18 in another actuation mode starting from dolly 14 tilting upward relative to frame 12 when dolly 14 is tilted upward relative to frame 12, pushing cushion adjuster 16 toward the extended position.

[0042] Reference now Fig. 7A , Figure 7B and Figure 7C , continue to refer to Figure 3A , various views of the seat bottom 50 are shown. Fig. 7A A top view of the seat bottom 50 is shown; Figure 7B A bottom bottom view of the seat bottom 50 is shown; and Figure 7C A bottom view of the seat bottom 50 is shown.

[0043] As described above, an embodiment provides a seat cushion length adjustment connector mechanism (CLA connector mechanism) driven by a seat tilt operation. The seat tilt operation can be electric or manual. The CLA connector mechanism is implemented by the linkage assembly 18. The seat bottom 50 with the linkage assembly 18 has a cushion length adjustment (CLA) driven by cushion tilt. That is, the seat bottom 50 has the characteristics of cushion tilt and CLA combination. CLA execution occurs during the tilt of the dolly 14, where the cushion 42 is supported on the dolly 14, and CLA execution is achieved without a separate CLA motor.

[0044] Item 1: In an embodiment, the present disclosure provides a seat, which includes a frame, a cushion pan that can be tilted relative to the frame, a cushion adjuster, and a link assembly, which is connected between the frame and the cushion pan and connected to the cushion adjuster, wherein when the cushion pan is tilted relative to the frame, the link assembly is actuated starting from the tilt of the cushion pan relative to the frame and acts on the cushion adjuster, thereby moving the cushion adjuster.

[0045] Item 2: In another embodiment, the present disclosure provides a seat according to Item 1, wherein the cushion pan can be tilted upward and downward relative to the frame, and when the cushion pan is tilted upward relative to the frame, the linkage assembly is actuated in a first actuation mode starting from the cushion pan tilting upward relative to the frame to push the cushion adjuster to an extended position, and when the cushion pan is tilted downward relative to the frame, the linkage assembly is actuated in a second actuation mode starting from the cushion pan tilting downward relative to the frame to pull the cushion adjuster to a retracted position.

[0046] Item 3: In another embodiment, the present disclosure provides a seat according to any one of the preceding items, wherein when the cushion pan is tilted upward relative to the frame, the linkage assembly acts on the cushion adjuster to push the cushion adjuster toward the extended position.

[0047] Item 4: In another embodiment, the present disclosure provides a seat according to any one of the preceding items, wherein when the cushion pan is tilted downward relative to the frame, the linkage assembly acts on the cushion adjuster to pull the cushion adjuster toward the retracted position.

[0048] Item 5: In another embodiment, the present disclosure provides a seat according to any one of the preceding items, wherein, when the cushion pan is tilted relative to the frame, the linkage assembly converts the tilting motion resulting from the tilting of the cushion pan relative to the frame into a translational motion, and uses the translational motion to act on the cushion adjuster, thereby moving the cushion adjuster.

[0049] Item 6: In another embodiment, the present disclosure provides a seat according to any one of the preceding items, wherein the linkage assembly includes a first linkage subassembly and a second linkage subassembly, the first linkage subassembly being connected between the frame and the cushion pan, and the second linkage subassembly being connected to the cushion adjuster.

[0050] Item 7: In another embodiment, the present disclosure provides a seat according to Item 6, wherein, when the cushion pan is tilted relative to the frame, the first link subassembly converts the tilting motion resulting from the tilting of the cushion pan relative to the frame into a translational motion, and the second link subassembly acts on the cushion adjuster according to the translational motion, thereby moving the cushion adjuster.

[0051] Item 8: In another embodiment, the present disclosure provides a seat according to any one of Items 1, 2, 3, 4 and 5, wherein the link assembly includes a first link subassembly, the first link subassembly includes a first bracket, a second bracket, a slider and a first connecting member, and the first bracket is connected to the frame, the second bracket is connected to the pad, the slider can slide relative to the second bracket, and the first connecting member is connected between the first bracket and the slider.

[0052] Item 9: In another embodiment, the present disclosure provides a seat according to Item 8, wherein the link assembly further includes a second link subassembly, the second link subassembly including a second connector and a connector bracket, the second connector being connected between the slider and the connector bracket.

[0053] Item 10: In another embodiment, the present disclosure provides the seat of Item 9, wherein the connector bracket is connected to the cushion adjuster and acts on the cushion adjuster when the cushion pan is tilted relative to the frame, thereby moving the cushion adjuster.

[0054] Item 11: In another embodiment, the present disclosure provides a seat according to Item 9, wherein, when the cushion pan is tilted relative to the frame, the first connecting member is tilted, the slider slides relative to the second bracket according to the tilt of the first connecting member, and the second connecting member actuates the connecting member bracket according to the sliding of the slider, and the connecting member bracket acts on the cushion adjuster according to the actuation of the second connecting member.

[0055] Item 12: In another embodiment, the present disclosure provides the seat according to Item 9, wherein the second link subassembly further includes a damper connected between the second connector and the connector bracket.

[0056] Item 13: In another embodiment, the present disclosure provides a seat according to any of the preceding items, the seat further comprising a cushion supported on the cushion pan, and wherein the cushion adjuster engages the cushion.

[0057] Item 14: In another embodiment, the present disclosure provides the seat of Item 13, wherein when the cushion pan is tilted upward relative to the frame, the linkage assembly acts on the cushion adjuster to urge the cushion to an increased length.

[0058] Item 15: In another embodiment, the present disclosure provides the seat of Item 13, wherein when the cushion pan is tilted downward relative to the frame, the linkage assembly acts on the cushion adjuster to urge the cushion to a reduced length.

[0059] Item 16: In another embodiment, the present disclosure provides a chair according to any of the preceding items, further comprising a motor, and wherein the tray can be tilted relative to the frame by power from the motor.

[0060] Item 17: In one embodiment, the present disclosure provides a component including: a first link subassembly, the first link subassembly including a first bracket, a second bracket, a slider and a first connector, the first bracket being connectable to a frame, the second bracket being connectable to a pad that can be tilted relative to the frame, the slider being slidable relative to the second bracket, and the first connector being connected between the first bracket and the slider; and a second link subassembly, the second link subassembly including a second connector and a connector bracket, the second connector being connected between the slider and the connector bracket, and the connector bracket being connectable to a pad adjuster.

[0061] Item 18: In another embodiment, the present disclosure provides the assembly according to Item 17, wherein the second link subassembly further includes a damper connected between the second link and the link bracket.

[0062] Item 19: In one embodiment, the present disclosure provides a seat including a cushion adjuster and a link assembly, wherein the link assembly is connected between a frame and a cushion pan that can be tilted relative to the frame, and the link assembly is also connected to the cushion adjuster, wherein when the cushion pan is tilted relative to the frame, the link assembly is actuated starting from the tilting of the cushion pan relative to the frame and acts on the cushion adjuster, thereby moving the cushion adjuster.

[0063] Item 20: In another embodiment, the present disclosure provides a seat according to Item 19, wherein, when the cushion pan is tilted upward relative to the frame, the linkage assembly is actuated in a first actuation mode starting from the cushion pan tilting upward relative to the frame to push the cushion adjuster to the extended position, and when the cushion pan is tilted downward relative to the frame, the linkage assembly is actuated in a second actuation mode starting from the cushion pan tilting downward relative to the frame to pull the cushion adjuster to the retracted position.

[0064] Although exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms of the present disclosure. More specifically, the words used in this specification are descriptive rather than restrictive, and it should be understood that multiple changes may be made without departing from the spirit and scope of the present disclosure. In addition, the features of the various embodiments of implementation may be combined to form other embodiments of the present disclosure.

Claims

1. A seat, include: frame; a dolly capable of tilting relative to the frame; pad conditioner; and a linkage assembly connected between the frame and the dolly and connected to the pad adjuster, wherein when the dolly is tilted relative to the frame, the linkage assembly actuates starting from the dolly tilting relative to the frame and acts on the pad adjuster to move the pad adjuster.

2. The seat according to claim 1, in: The dolly is capable of tilting upward and downward relative to the frame; When the dolly is tilted upward relative to the frame, the linkage assembly actuates in a first actuation mode starting from the dolly being tilted upward relative to the frame to urge the pad adjuster toward an extended position; and When the dolly is tilted downwardly relative to the frame, the linkage assembly actuates in a second actuation mode starting from the dolly being tilted downwardly relative to the frame to pull the pad adjuster toward a retracted position.

3. The seat according to claim 1, in: When the dolly is tilted upward relative to the frame, the linkage assembly acts on the pad adjuster to urge the pad adjuster toward the extended position.

4. The seat according to claim 1, in: When the dolly is tilted downwardly relative to the frame, the linkage assembly acts on the pad adjuster to pull the pad adjuster toward a retracted position.

5. The seat according to claim 1, in: When the dolly is tilted relative to the frame, the linkage assembly converts tilting motion resulting from the tilting of the dolly relative to the frame into translational motion, and uses the translational motion to act on the pad adjuster, thereby moving the pad adjuster.

6. The seat according to claim 1, in: The linkage assembly includes a first linkage subassembly connected between the frame and the dolly and a second linkage subassembly connected to the pad adjuster.

7. The seat according to claim 6, in: When the dolly tilts relative to the frame, the first linkage subassembly converts tilting motion from the tilting of the dolly relative to the frame into translational motion, and the second linkage subassembly acts on the pad adjuster according to the translational motion to move the pad adjuster.

8. The seat according to claim 1, in: The connecting rod assembly includes a first connecting rod subassembly, the first connecting rod subassembly includes a first bracket, a second bracket, a slider and a first connecting member; and The first bracket is connected to the frame, the second bracket is connected to the dolly, the slider is slidable relative to the second bracket, and the first connector is connected between the first bracket and the slider.

9. The seat according to claim 8, in: The connecting rod assembly further includes a second connecting rod subassembly, wherein the second connecting rod subassembly includes a second connecting member and a connecting member bracket, and the second connecting member is connected between the sliding block and the connecting member bracket.

10. The seat according to claim 9, in: The connector bracket is connected to the pad adjuster and acts on the pad adjuster when the dolly is tilted relative to the frame, thereby moving the pad adjuster.

11. The seat according to claim 9, in: When the dolly is tilted relative to the frame, the first connecting member is tilted, and the slider slides relative to the second bracket according to the tilt of the first connecting member; and The second connector actuates the connector bracket in accordance with sliding of the slider, and the connector bracket acts on the pad adjuster in accordance with the actuation of the second connector.

12. The seat according to claim 9, in: The second connecting rod subassembly also includes a damper connected between the second connecting member and the connecting member bracket.

13. The seat according to claim 1, further comprising: include: a pad supported on the dolly; and wherein the pad adjuster engages the pad.

14. The seat according to claim 13, in: When the dolly is tilted upward relative to the frame, the linkage assembly acts on the pad adjuster to urge the pad to an increased length.

15. The seat according to claim 13, in: When the dolly is tilted downwardly relative to the frame, the linkage assembly acts on the pad adjuster to pull the pad to a reduced length.

16. The seat according to claim 1, further comprising: include: Motor; and Wherein, the dolly can be tilted relative to the frame by power from the motor.

17. A component, include: a first connecting rod subassembly, the first connecting rod subassembly comprising a first bracket, a second bracket, a slider, and a first connecting member, the first bracket being connectable to a frame, the second bracket being connectable to a dolly that can tilt relative to the frame, the slider being slidable relative to the second bracket, and the first connecting member being connected between the first bracket and the slider; as well as A second linkage subassembly includes a second connector and a connector bracket, wherein the second connector is connected between the slider and the connector bracket, and the connector bracket is connectable to a pad adjuster.

18. The assembly according to claim 17, in: The second connecting rod subassembly also includes a damper connected between the second connecting member and the connecting member bracket.

19. A chair, include: pad conditioner; and a link assembly connected between a frame and a dolly that can tilt relative to the frame, the link assembly also connected to the pad adjuster, wherein when the dolly tilts relative to the frame, the link assembly actuates starting from the tilting of the dolly relative to the frame and acts on the pad adjuster to move the pad adjuster.

20. The seat according to claim 19, in: When the dolly is tilted upward relative to the frame, the linkage assembly actuates in a first actuation mode starting from the dolly being tilted upward relative to the frame to urge the pad adjuster toward an extended position; and When the dolly is tilted downwardly relative to the frame, the linkage assembly actuates in a second actuation mode starting from the dolly being tilted downwardly relative to the frame to pull the pad adjuster toward a retracted position.

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