Rocking furniture with synchronous drive mechanism

Abstract

A piece of furniture can comprise a seat base, a seat assembly, a leg support platform, a drive rod, and a sequencing mechanism. The seat assembly is movable relative to the seat base. The leg support platform is coupled to the seat assembly. The drive rod is rotatable relative to the seat assembly, and rotation of the drive rod causes the seat assembly and leg support platform to move. The sequencing mechanism comprises a cam attached to the drive rod and a caster wheel attached to the seat assembly. The cam is configured to prevent the seat assembly from moving between a first reclining position and a second reclining position, while the seat assembly moves between a first and a second tilting position, and while the leg support platform moves between a first and a second leg support position.

Description

CROSS-REFERENCE TO RELATED REGISTRATIONS

[0001] This application claims priority over US patent application no. 18 / 143,240, filed on May 4, 2023. The entire disclosure of the above-mentioned application is hereby incorporated by reference. AREA

[0002] The present disclosure relates to a piece of furniture, and in particular a rocking piece of furniture, with a force-synchronous mechanism. BACKGROUND

[0003] This section contains background information on the present disclosure and does not necessarily reflect the state of the art.

[0004] Furniture such as chairs, sofas, loveseats, sectionals, and the like may have a backrest that, using a reclining mechanism, is movable relative to a seat between an upright and a reclined position. Additionally, some furniture may have a leg rest mechanism that allows the user to move a leg rest platform between a retracted and an extended position to support the user's legs and / or feet. Furthermore, some furniture may have a rocking mechanism that allows the user to rock the furniture between a backward and a forward tilted position.

[0005] However, the individual operation of the reclining, leg rest, and rocking mechanisms, and the number of adjustable positions, can be overwhelming for the user of the furniture. The present invention provides a synchronous mechanism that synchronizes the tilting, rocking, and leg rest movements of the furniture, allowing the user to easily find their desired and comfortable position without having to operate the tilting, leg rest, and rocking mechanisms individually. SUMMARY

[0006] This section contains a general summary of the revelation and is not a comprehensive revelation of its entire scope or all of its features.

[0007] The present disclosure describes a piece of furniture that may include a seat base, a seat assembly, a leg support platform, a drive rod, and a sequencing mechanism. The seat assembly may be movable relative to the seat base. The seat assembly may be movable between a first reclining position and a second reclining position, and between a first tilting position and a second tilting position. The leg support platform may be connected to the seat assembly and be movable between a first leg support position and a second leg support position. The drive rod may be rotatable relative to the seat assembly. Rotation of the drive rod may cause the seat assembly to move from the first tilting position to the second tilting position, and may cause the leg support platform to move from the first leg support position to the second leg support position.The sequencing mechanism can include a cam attached to the drive rod and a trailing wheel attached to the seat assembly. The cam can be configured to prevent the seat assembly from moving between the first and second reclining positions, while the seat assembly moves between the first and second tilting positions, and while the leg support platform moves between the first and second leg support positions.

[0008] In some configurations of the piece of furniture from the paragraph above, the rotation of the drive rod causes a first surface of the cam to come into contact with the trailing wheel, and the subsequent rotation of the drive rod causes a second surface of the cam to come into contact with the trailing wheel.

[0009] In some configurations of the furniture described in either of the preceding paragraphs, the sequencing mechanism is configured to prevent the seat assembly from tilting from the first reclining position to the second reclining position when the first face of the cam comes into contact with the trailing wheel. When the second face of the cam comes into contact with the trailing wheel, the sequencing mechanism is configured to allow the seat assembly to tilt from the first reclining position to the second reclining position.

[0010] In some configurations of the piece of furniture from one of the paragraphs above, the piece of furniture includes a motor that drives the rotation of the drive rod.

[0011] In some configurations of the furniture described in the paragraphs above, the motor's operation controls the movement of the seat assembly to achieve intermediate positions between the first and second reclining positions, as well as intermediate positions between the first and second tilting positions. The motor's operation also controls the movement of the leg support platform to achieve intermediate positions between the first and second leg support positions.

[0012] In some configurations of the furniture described in the paragraphs above, the furniture includes a rail, a carriage, and a support rod. The rail is attached to the motor. The carriage is attached to the drive rod and coupled to the rail. The support rod is rotatable relative to the seat assembly and coupled to the motor.

[0013] In some configurations of the furniture described in the paragraphs above, the motor drives the carriage to slide along the rail and simultaneously causes the drive rod to rotate. The rotation of the drive rod causes the seat assembly to move between the first and second reclining positions, and the leg support platform to move between the first and second leg support positions.

[0014] In some configurations of the furniture described in the paragraphs above, the motor drives the rail to slide relative to the carriage and simultaneously causes the support rod to rotate. The rotation of the support rod moves the seat assembly between the first and second reclining positions.

[0015] In some configurations of the furniture described in the paragraphs above, the furniture includes a tilting mechanism. The tilting mechanism comprises a clevis bracket that engages with the drive rod and a wheel support plate that pivots to the seat base.

[0016] In some configurations of the piece of furniture from one of the paragraphs above, the rotation of the drive rod causes the fork head bracket to drive the rotation of the wheel support plate, and the rotation of the wheel support plate causes the seat assembly to move relative to the seat base between the first tilt position and the second tilt position.

[0017] In some configurations of the furniture described in the paragraphs above, the tilting mechanism includes a first joint that is rotatably attached to the clevis and wheel support plate. The first joint is movable independently of the clevis. The tilting mechanism also includes a second joint that is rotatably attached to the wheel support plate and has a trailing wheel extending from the second joint.

[0018] In some configurations of the furniture described in the paragraphs above, the seat assembly can rock between the first and second rocking positions. The first and second joints and the wheel support plate rotate simultaneously as the seat assembly moves between these positions. The seat assembly can rock between the first and second rocking positions when the leg rest platform is in the first leg rest position.

[0019] In some configurations of the piece of furniture from one of the paragraphs above, the seat assembly is in the first rocking position and cannot rock further backwards when the trailing wheel touches the wheel support plate.

[0020] In some configurations of the piece of furniture from one of the paragraphs above, the seat assembly is in the second rocking position and cannot rock further forward when the first joint touches the fork head bracket.

[0021] The present disclosure relates to a piece of furniture that may include a seat base, a seat assembly, a leg support platform, a drive rod, a support rod, and a tilting linkage mechanism. The seat assembly may be movable relative to the seat base. The seat assembly may be movable between an upright position and a reclined position, and between a nominally tilted position and a rearward tilted position. The leg support platform may be coupled to the seat assembly. The leg support platform may be movable between a stowed position and an extended position. The drive rod may be rotatable relative to the seat assembly. Rotation of the drive rod causes the leg support platform to move from the stowed position to the extended position. The support rod may be rotatable relative to the seat assembly.By rotating the support rod, the seat assembly can move between the upright and reclined positions. The tilting linkage mechanism can include a set of linkages attached to the drive rod and support rod, a first cam attached to the drive rod, a first trailing wheel movable in rolling contact with the first cam, and a wheel support plate rotatably mounted to the seat base. The tilting linkage mechanism can be configured to allow the seat assembly to move simultaneously between the nominally tilted and fully reclined positions, while the leg support platform moves between the stowed and extended positions, and the seat assembly moves between the upright and reclined positions.

[0022] In some configurations of the furniture described above, the furniture may include a sequencing mechanism. The sequencing mechanism comprises a second cam attached to the drive rod and a second idler wheel attached to the seat assembly. The second cam comprises a first surface, a second surface, and a third surface.

[0023] In some configurations of the furniture from either of the two preceding paragraphs, the second cam is configured to prevent the seat assembly from moving between the upright position and the reclined position when the first surface of the second cam comes into contact with the second trailing wheel.

[0024] In some configurations of the piece of furniture from one of the paragraphs above, the second cam is configured to allow movement of the seat assembly between the upright position and the reclined position when the second surface of the second cam comes into contact with the second trailing wheel.

[0025] In some configurations of the piece of furniture from one of the paragraphs above, the piece of furniture may include a motor that drives the rotation of the drive rod.

[0026] In some configurations of the furniture described in the paragraphs above, the motor's operation controls the movement of the seat assembly to achieve intermediate positions between the upright and reclined positions, as well as intermediate positions between the nominally tilted and fully reclined positions. The motor's operation also controls the movement of the leg rest platform to achieve intermediate positions between the stowed and extended positions.

[0027] In some configurations of the piece of furniture from one of the paragraphs above, the piece of furniture may include a rail attached to the motor and a carriage attached to the drive rod.

[0028] In some configurations of the furniture described in the paragraphs above, the motor first drives the carriage to slide along the rail, simultaneously causing the drive rod to rotate. Then, the motor drives the rail to slide relative to the carriage, simultaneously causing the support rod to rotate.

[0029] In some configurations of the piece of furniture from one of the above paragraphs, the set of linkages of the tilting linkage mechanism includes a first linkage connected to the support rod and a second linkage connected to the drive rod.

[0030] In some configurations of the piece of furniture from one of the above paragraphs, the rotation of the first cam causes the first cam to come into contact with the first idler wheel and simultaneously drives the set of linkages so that the seat assembly moves from the nominally tilted position to the tilted-back position.

[0031] In some configurations of the furniture described in the paragraphs above, the seat assembly is designed to move from a first synchronous position to a second synchronous position and from a third synchronous position to a fourth synchronous position. When the seat assembly moves between the first and fourth synchronous positions, it moves between the nominally tilted position and the fully reclined position, and the leg rest platform moves between the stowed and extended positions. When the seat assembly moves between the second and fourth synchronous positions, it moves between the upright and reclined positions.

[0032] In some configurations of the furniture described in the paragraphs above, the seat assembly can rock between a backward-rocking and a forward-rocking position. The frame and wheel support plate rotate simultaneously as the seat assembly moves between these positions. The seat assembly can rock freely between the forward-rocking and backward-rocking positions when the leg rest platform is in the stowed position. The seat assembly cannot rock between the forward-rocking and backward-rocking positions when the leg rest platform is in the extended position.In some configurations of the piece of furniture from one of the paragraphs above, the seat assembly is in the rocked position and cannot rock further backward when the first trailing wheel touches the wheel support plate.

[0033] In some configurations of the piece of furniture from one of the paragraphs above, the seat assembly is in the forward-rocking position and cannot rock any further forward once the first trailing wheel touches the first cam.

[0034] Further areas of application will become apparent from the description contained herein. The description and specific examples in this summary serve only for illustration and are not intended to limit the scope of the present disclosure. DRAWINGS

[0035] The drawings described herein serve only to illustrate selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure. Fig. Figure 1 is a perspective view of a piece of furniture showing a seating assembly in a first synchronous position according to the principles of the present disclosure; Fig. Figure 2 is a side view of the piece of furniture, showing the seating assembly in a backward-tilted and backward-rocking position; Fig. Figure 3 is a side view of the piece of furniture, showing the seating assembly in a forward-tilted and forward-rocking position; Fig. Figure 4 is a side view of the piece of furniture, showing the seating assembly in a second synchronous position; Fig. Figure 5 is a side view of the piece of furniture, showing the seating assembly in a third synchronous position; Fig. Figure 6 is a side view of the piece of furniture showing the seating assembly in a fourth synchronous position; Fig. Figure 7 is a partial perspective view of a synchronous mechanism of the piece of furniture; Fig. Figure 8 is a partial perspective view of the synchronizing mechanism; Fig. Figure 9 is an exploded view of the synchronizing mechanism; Fig. Figure 10 is a perspective view of a drive actuator assembly of the synchronous mechanism, with the synchronous mechanism in a position of Fig. 1 is located; Fig. Figure 11 is a perspective view of the drive actuator assembly of the synchronous mechanism, with the synchronous mechanism in a position of Fig. 6 is located; Fig. Figure 12 is a perspective view of a tilt linkage assembly of the synchronizing mechanism, with the synchronizing mechanism in the position of Fig. 1 is located; Fig. Figure 13 is a perspective view of the tilting linkage arrangement of the synchronizing mechanism, with the synchronizing mechanism in the position of Fig. 2 and Fig. 6 is located; Fig. Figure 14 is a perspective view of the tilting linkage arrangement of the synchronizing mechanism, with the synchronizing mechanism in the position of Fig. 3 is located; Fig. Figure 15 is a perspective view of a leg support mechanism of the synchronous mechanism, with the synchronous mechanism in the position of Fig. 1 is located; Fig. Figure 16 is a perspective view of the leg support mechanism of the synchronous mechanism, with the synchronous mechanism in the position of Fig. 6 is located; Fig. Figure 17 is a perspective view of a sequencing mechanism of the synchronizing mechanism, with the synchronizing mechanism in the position of Fig. 1 is located; Fig. Figure 18 is a perspective view of the sequencing mechanism of the synchronizing mechanism, with the synchronizing mechanism in the position of Fig. 6 is located; Fig. Figure 19 is a side view of the tilting linkage assembly of the piece of furniture, with the tilting linkage assembly in the position of Fig. 1 is located; Fig. Figure 20 is a side view of the tilting linkage assembly of the piece of furniture, with the tilting linkage assembly in the position of Fig. 2 and Fig. 6 is located; Fig. Figure 21 is a side view of the tilting linkage assembly of the piece of furniture, with the tilting linkage assembly in the position of Fig. 3 is located. Fig. Figure 22 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in the position of Fig. 1 is located. Fig. Figure 23 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in the position of Fig. 4 is located; Fig. Figure 24 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in the position of Fig. 5 is located; Fig. Figure 25 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in the position of Fig. 6 is located; Fig. 26 is a perspective view of another piece of furniture showing a seating assembly in a first synchronous position according to the principles of the present disclosure; Fig. Figure 27 is a perspective view of the piece of furniture, showing the seating assembly in the first synchronous position; Fig. Figure 28 is a side view of the piece of furniture, showing the seating assembly in a backward rocking position; Fig. Figure 29 is a side view of the piece of furniture, showing the seating assembly in a forward-rocking position. Fig. Figure 30 is a side view of the piece of furniture showing a synchronous mechanism in a second synchronous position. Fig. Figure 31 is a side view of the piece of furniture showing a synchronous mechanism in a third synchronous position. Fig. Figure 32 is a side view of the piece of furniture showing a synchronous mechanism in a fourth synchronous position; Fig. Figure 33 is an exploded view of the synchronous mechanism of the piece of furniture; Fig. Figure 34 is a perspective view of a tilting linkage mechanism of the synchronizing mechanism, with the synchronizing mechanism in a position of Fig. 26 is located; Fig. Figure 35 is a perspective view of a tilting linkage mechanism of the synchronizing mechanism, with the synchronizing mechanism in a position of Fig. 28 is located; Fig. Figure 36 is a perspective view of a tilting linkage mechanism of the synchronizing mechanism, with the synchronizing mechanism in a position of Fig. 29 is located; Fig. Figure 37 is a perspective view of a sequencing assembly of the synchronizing mechanism, with the synchronizing mechanism in a position of Fig. 25 is located; Fig. Figure 38 is a perspective view of a sequencing assembly of the synchronizing mechanism, with the synchronizing mechanism in a position of Fig. 28 is located; Fig. Figure 39 is a side view of the tilting linkage assembly of the piece of furniture, with the tilting linkage assembly in the position of Fig. 26 is located; Fig. Figure 40 is a side view of the tilting linkage assembly of the piece of furniture, with the tilting linkage assembly in the position of Fig. 28 is located; Fig. Figure 41 is a side view of the tilting linkage assembly of the piece of furniture, wherein the tilting linkage assembly is in the position of Fig. 29. Fig. Figure 42 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in a position of Fig. 26. Fig. Figure 43 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in a position of Fig. 30 is located; Fig. Figure 44 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in a position of Fig. 31 is located; and Fig. Figure 45 is a perspective view of the synchronizing mechanism, showing the synchronizing mechanism in a position of Fig. 32 is located.

[0036] The corresponding reference symbols designate corresponding parts in the different views of the drawings. DETAILED DESCRIPTION

[0037] Exemplary embodiments are now described in more detail with reference to the attached drawings.

[0038] Exemplary embodiments are provided to ensure that this disclosure is complete and fully conveys its scope to the person skilled in the art. Numerous specific details, such as examples of particular components, devices, and methods, are given to provide a comprehensive understanding of the embodiments of this disclosure. It will be clear to the person skilled in the art that certain details need not be used, that exemplary embodiments can be embodied in many different forms, and that neither of these should be interpreted as limiting the scope of the disclosure. In some exemplary embodiments, known methods, known device structures, and known technologies are not described in detail.

[0039] The terminology used here serves only to describe certain exemplary embodiments and is not intended to be restrictive. As used here, the singular forms "a," "an," and "the" can also include the plural forms unless the context clearly indicates otherwise. The terms "exhibit," "exhibiting," "comprising," and "with" are inclusive and therefore specify the presence of the indicated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The procedure steps, processes, and operations described herein are not to be construed as necessarily being carried out in the order described or illustrated, unless this is expressly stated as the order of execution.It goes without saying that additional or alternative steps may be used.

[0040] When an element or layer is described as "on," "interacting with," "connected with," or "coupled with" another element or layer, it may rest directly on, interact with, be connected or coupled to that other element or layer, or there may be intervening elements or layers. Conversely, when an element is described as "directly on," "directly interacting with," "directly connected with," or "directly coupled with" another element or layer, there may be no intervening elements or layers. Other terms used to describe the relationship between elements should be interpreted similarly (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).As used here, the term “and / or” includes all combinations of one or more of the listed elements.

[0041] Although the terms "first," "second," "third," etc., may be used here to describe different elements, components, areas, layers, and / or sections, these elements, components, areas, layers, and / or sections should not be restricted by these terms. These terms may only be used to distinguish one element, component, area, layer, or section from another. Terms such as "first," "second," and other numerical terms used here do not imply any order or sequence unless clearly indicated by the context.Thus, a first element, first component, first area, first layer or first section described below could be referred to as a second element, second component, second area, second layer or second section without deviating from the teachings of the exemplary embodiments.

[0042] Spatially relative terms such as "inside," "outside," "under," "below," "below," "above," "over," "above," and the like can be used here to simplify the description and describe the relationship of one element or feature to one or more other elements or features, as illustrated in the figures. Spatially relative terms can also serve to capture different orientations of the device in use or operation, in addition to the orientation shown in the figures. For example, if the device in the figures is turned upside down, elements described as "below" or "under" other elements or features would then be oriented "above" those other elements or features. Thus, the example term "below" can encompass both an orientation above and below.The device can also be oriented differently (rotated by 90 degrees or in other orientations) and the spatially relative descriptions used here can be interpreted accordingly.

[0043] With reference to the Fig. In Figures 1-25, a piece of furniture 50 is provided, which may include a seat base 60 and a seat assembly 52. ​​The piece of furniture 50 may also include a drive actuator mechanism 54, a pair of tilting linkage mechanisms 55, a leg support mechanism 56, and a pair of sequencing mechanisms 58 (collectively referred to as a synchronous mechanism). As described in more detail below, the seat assembly 52 is movable relative to the seat base 60. The seat assembly 52 may move between a first rocking position or a nominal rocking position ( Fig. 1), a second swing position or a backward swing position ( Fig. 2) and a third swing position or a forward swing position ( Fig. 3) rocking forwards and backwards. Additionally, the seat assembly 52 can move between a first synchronous position ( Fig. 1), a second synchronous position or a first intermediate position ( Fig. 4), a third synchronous position or a second intermediate position ( Fig. 5) and a fourth synchronization position ( Fig. 6) move.

[0044] The seat assembly 52 can rock between the first, second, and third rocking positions, regardless of whether the seat assembly 52 is moving between the first, second, third, and fourth synchronous positions. More precisely, the rocking of the seat assembly 52 between the first, second, and third rocking positions is manually driven by an occupant sitting in the seat assembly 52. ​​The movement of the seat assembly 52 between the first, second, third, and fourth synchronous positions is electrically driven by a motor (e.g., motor 126). When the seat assembly 52 moves from the first synchronous position ( Fig. 1) to the fourth synchronization position ( Fig. 6) When the seat assembly 52 moves, it tilts from a nominally tilted position to a rearward tilted position, reclines from an upright position or a first reclining position to a reclined position or a second reclining position, and the leg support mechanism 56 moves from a stowed position to an extended position. When the seat assembly 52 moves from the fourth synchronous position ( Fig. 6) back to the first synchronous position ( Fig. 1) When moved, the seat assembly 52 tilts from the backward tilted position to the nominally tilted position, the seat assembly 52 returns from the reclined position to the upright position, and the leg support mechanism 56 returns from the extended position to the stowed position.

[0045] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. 6. The seat assembly 52 can comprise a seat frame assembly 62, a backrest assembly 64, a seat surface assembly 66 and a swing assembly 68 ( Fig. 4, Fig. 5 to Fig. 6) The seat frame assembly 62 can comprise a pair of armrest frames 70, a pair of side support plates 72, and a front support plate 74. The armrest frames 70 can be positioned on opposite sides of the seat surface assembly 66. The side support plates 72 can be attached to the armrest frames 70. The front support plate 74 can extend between the pair of side support plates 72.

[0046] As in Fig. As shown in Figure 1, the backrest assembly 64 can be rotatably connected to the seat assembly 66 by a pair of rods 78, allowing the backrest assembly 64 to rotate relative to the seat assembly 66. The backrest assembly 64 can comprise a pair of spaced-apart first plates 80 and a second plate 82 extending transversely between the pair of first plates 80.

[0047] The seat surface assembly 66 can comprise a pair of first support beams 84 and a pair of second support beams 86. Each of the first support beams 84 can extend between a front end 85 and a rear end 87 opposite the front end 85. The front end 85 can be positioned near the front support plate 74, and the rear end 87 can be positioned near the backrest assembly 64. One of the second support beams 86 can be attached to the pair of first support beams 84 at the front ends 85. A second of the second support beams 86 can be attached to the pair of first support beams 84 at the rear ends 87. Accordingly, the pairs of first and second support beams 84, 86 can work together to essentially form a frame for the seat surface assembly 66, which can support, for example, a seat cushion (not shown), seat base springs (not shown), and / or seat base slats (not shown).

[0048] The pair of rods 78 can attach the pair of first plates 80 of the backrest assembly 64 to the pair of first support beams 84 of the seat assembly 66. More precisely, the pair of rods 78 can attach the pair of first plates 80 to the rear ends 87 of the pair of first support beams 84. The pair of rods 78 can support the movement of the backrest assembly 64 and the seat assembly 66 between the upright position and the reclined position.

[0049] As in the Fig. 7 and Fig. As shown in Figure 8, the seat base 60 can comprise a pair of lateral support elements 92, a first cross element 94, and a second cross element 96. Each of the lateral support elements 92 can be positioned adjacent to the respective lateral support plates 72. The lateral support element 92 can extend between a first end 98 and a second end 100, which is opposite the first end 98. The first cross element 94 can extend between the pair of lateral support elements 92 and be positioned adjacent to the first end 98. The second cross element 96 can extend between the pair of lateral support elements 92 and can be spaced apart from the first cross element 94. The second cross element 96 can be positioned adjacent to the second end 100. The lateral support elements 92 and the first and second cross elements 94, 96 can be fixed relative to each other. In other words, the seat base 60 can be a stationary base frame for the furniture piece 50.

[0050] As in the Fig. 7 and Fig. As shown in Figure 8, the rocking assembly 68 can comprise a pair of rocking elements 88 and a pair of rocking spring assemblies 90. The rocking elements 88 can be attached to the seat frame assembly 62 and the seat assembly 52 for a rocking motion relative to the seat base 60 between the nominal rocking position or nominally tilted position ( Fig. 1), the backward rocking position ( Fig. 2) or tilted backwards ( Fig. 6) and the forward rocking position ( Fig. 3) support. In the configuration shown in the figures, one of the rocking elements 88 can be attached to a first of the lateral support plates 72 and a first of the rocking spring assemblies 90. A second of the rocking elements 88 can be attached to a second of the lateral support plates 72 and a second of the rocking spring assemblies 90. A bottom surface 102 of the rocking elements 88 can be curved and can roll in contact with the respective lateral support element 92 of the seat base 60.

[0051] Each of the 90 rocker spring assemblies can be arranged in a mirror-image configuration relative to each other. With further reference to Fig. Each rocker spring assembly 90 can comprise a first spring 104, a second spring 106, a first bracket 108, and a second bracket 110. The first bracket 108 can be fixedly attached to the rocker element 88 or to the seat frame assembly 62 (e.g., the side support plate 72). The second bracket 110 can be fixedly attached to the seat base 60 (e.g., to the side support element 92 of the seat base 60). The first and second springs 104 and 106 can be arranged between and attached to the first and second brackets 108 and 110.

[0052] As in the Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. As shown in Figure 11, the drive actuator mechanism 54 can comprise a drive rod 120, a first support rod 122, a second support rod 124, a motor 126, a drive assembly 128, a rail 130, a slide 132, and a cam 134. The drive actuator mechanism 54 can be positioned at equal intervals between the lateral support elements 92 of the seat base 60. The drive actuator mechanism 54 is located between a first position ( Fig. 10) and a second position ( Fig. 11) movable. The first position of the drive actuator mechanism 54 corresponds to the first synchronous position ( Fig. 1) of the seat assembly 52. ​​The second position of the drive actuator mechanism 54 corresponds to the fourth synchronous position ( Fig. 6) of the seating assembly 52.

[0053] As in the Fig. 7 and Fig. As shown in Figure 9, the drive rod 120 can have a first rod end 136 and a second rod end 138 opposite the first rod end 136. The drive rod 120 can be rotatably mounted on the seat frame assembly 62. The first and second rod ends 136, 138 of the drive rod 120 can be received in the respective lateral support plate 72 of the seat frame assembly 62. The drive rod 120 can have a square cross-sectional shape. Alternatively, the drive rod 120 can have any other suitable cross-sectional shape.

[0054] As in the Fig. 7 and Fig. As shown in Figure 9, the first support rod 122 can have a first rod end 140 and a second rod end 142 opposite the first rod end 140. The first and second rod ends 140, 142 of the first support rod 122 can be received in the respective lateral support plate 72 of the seat frame assembly 62. The first support rod 122 can have a circular cross-section. Alternatively, the drive rod 120 can have another suitable cross-section.

[0055] As in the Fig. 10 and Fig. As shown in Figure 11, a strut element 144 can support the drive rod 120 and the first support rod 122. The strut element 144 comprises a first element end 146 and a second element end 148, which is opposite the first element end 146. The first element end 146 of the strut element 144 can be fixedly attached to the front support plate 74 ( Fig. 1) be attached to the seat frame assembly 62. The second element end 148 of the strut element 144 can receive the drive rod 120 such that the drive rod 120 is rotatable relative to the strut element 144. A recess 150 can be arranged between the first and second element ends 144, 146, which receive the first support rod 122.

[0056] As in the Fig. 7 and Fig. As shown in Figure 9, the second support rod 124 can have a first rod end 152 and a second rod end 154 opposite the first rod end 152. The first and second rod ends 152, 154 of the second support rod 124 can be received in the respective lateral support plate 72 of the seat frame assembly 62. The second support rod 124 can have a circular cross-sectional shape. Alternatively, the second support rod 124 can have any other suitable cross-sectional shape.

[0057] As in Fig. As shown in Figure 8, the motor 126 can be an AC or DC motor and can be functionally connected to the drive assembly 128. The drive assembly 128 can be rotatably attached to the second support rod 124 using a connecting bracket 156 and a support joint 158. The connecting bracket 156 can be fixed to the drive assembly 128 and extend toward the second transverse element 96 of the seat base 60. The support joint 158 ​​can comprise a rear wall 160 and opposing side walls 162, which interact to form essentially a U-shape. Additionally, the support joint 158 ​​can extend between a first end 164 and a second end 166, which is opposite the first end 164. The first end 164 of the support joint 158 ​​can be attached to the second support rod 124. More precisely, the side walls 162 of the support joint 158 ​​can accommodate part of the second support rod 124 transversely.The second end 166 of the support joint 159 can accommodate the connecting bracket 156 between the side walls 162. A mechanical fastening element 170 can extend through the side walls 162 of the support joint 158 ​​and the connecting bracket 156 to rotatably attach the support joint 158 ​​to the connecting bracket 156.

[0058] As in the Fig. 10 and Fig. As shown in Figure 11, the rail 130 can extend between a first end 172 and a second end 174, which is opposite the first end 172. The first end 172 of the rail 130 can be positioned near the front support plate 74 ( Fig. 8) The second end 174 of the rail 130 can be at least partially housed in the drive assembly 128. A bracket 176 can be arranged at the first end 172 of the rail 130. The bracket 176 can comprise a back wall 178 and opposite side walls 180 extending from the back wall 178 to essentially form a U-shape. The back wall 178 of the bracket 176 can abut the first end 172 of the rail 130. The side walls 180 can be positioned alongside the rail 130. A rod 182 can extend through the opposite side walls 180 of the bracket 176. A pair of drive wheels 184 can be arranged at opposite ends of the rod 182 and positioned outside the side walls 180 of the bracket 176.

[0059] The carriage 132 is slidably arranged and mounted on the rail 130. The carriage 132 is configured to slide either forwards (i.e., towards the first end 172 of the rail 130) or backwards (i.e., towards the second end 174 of the rail 130). As shown in Fig. As shown in Figure 10, the carriage 132 can be positioned at the second end 174 of the rail 130 when the seat assembly 52 is in the first synchronization position ( Fig. 1) As in Fig. As shown in Figure 11, the carriage 132 is positioned at the first end 172 of the rail 130 when the seat assembly 52 is in the fourth synchronization position ( Fig. 6). Accordingly, the carriage 132 slides between the first and second ends 172, 174 of the rail 130.

[0060] As in the Fig. 10 and Fig. As shown in Figure 11, the slide 132 is connected to the drive rod 120 via a first pair of linkages 186 and a second pair of linkages 188, which are arranged on opposite sides of the slide 132. The first pair of linkages 186 can be fixedly connected to the slide 132. The second pair of linkages 188 can comprise a first end 190, which is rotatably connected to the first pair of linkages 186, and a second end 192, which engages the drive rod 120 for actuation. More precisely, the second end 192 of the linkages 188 can have an opening 194 that receives the drive rod 120 and is shaped according to the cross-sectional shape of the drive rod 120. Additionally, the second end 192 of the linkages 188 can have a flange 196. The flange 196 can be positioned next to the drive rod 120 and can be firmly attached to the drive rod 120 using a mechanical fastening element 198.

[0061] The cam 134 can be rigidly attached to the strut element 144 by means of a connecting joint 200 and a connecting bracket 202. The connecting joint 200 can be rigidly attached at opposite ends to the strut element 144 and the front support plate 74 ( Fig. 8) be attached. The connecting bracket 202 can firmly connect the cam 134 to the connecting joint 200. The cam 134 can have a first side 204, a second side 206, and a third side 208, which interact to form essentially a triangular shape. The first side 204 of the cam 134 is curved and essentially convex. The second side 206 of the cam 134 is also curved and essentially concave. The third side 208 of the cam 134 connects the first and second sides 204, 206 of the cam 134 at opposite ends and is essentially flat.

[0062] The trailing wheel 184 can be mounted on the cam 134. As in Fig. As shown in Figure 10, the trailing wheel 184 can touch the first side 204 of the cam 134 at a position adjacent to the third side 208 of the cam 134 when the seat assembly 52 is in the first synchronization position ( Fig. 1) As in Fig. As shown in Figure 11, the trailing wheel 184 can touch the second side 206 of the cam 134 at a position adjacent to the third side 208 of the cam 134 when the seat assembly 52 is in the fourth synchronization position ( Fig. 6) Accordingly, the trailing wheel 184 is configured to roll against the first and second sides 204, 206 of the cam 134. The cam 134 can be made of a polymer material such as polyoxymethylene, a composite material, a metallic material, or another suitable material.

[0063] As in the Fig. As shown in Figures 9 and 12 to 14, each of the tilting linkage mechanisms 55 can comprise a clevis bracket 225, a first joint 226, a second joint 228, a third joint 230, a wheel support plate 232, and a mounting bracket 234. The pair of tilting linkage mechanisms 55 is arranged on opposite sides of the drive actuator mechanism 54, and each of the tilting linkage mechanisms 55 is arranged as a mirror image of the other. Only one tilting linkage mechanism 55 is shown in the figures. The tilting linkage mechanism 55 is positioned between a first position ( Fig. 12), a second position ( Fig. 13) and a third position ( Fig. 14) movable. The first position of the tilting linkage mechanism 55 corresponds to the position in which the seat assembly 52 is in the nominal rocking position or nominally tilted position ( Fig. 1) The second position of the tilting linkage mechanism 55 corresponds to the position in which the seat assembly 52 is in the backwards rocking position ( Fig. 2) or the backward tilted position ( Fig. 6). The third position of the tilting linkage mechanism 55 corresponds to the position in which the seat assembly is in the forward-rocking position ( Fig. 3) is located.

[0064] As in the Fig. 12, Fig. 13 to Fig. As shown in Figure 14, the clevis bracket 225 of the tilting linkage mechanism 55 can engage with the drive rod 120 in a drive-oriented manner. The clevis bracket 225 can comprise a rear wall 236 and opposing side walls 238, which interact to form essentially a U-shape. The drive rod 120 can extend transversely through the side walls 238. The rear wall 236 of the clevis bracket 225 can have a recess 240. Additionally, a pair of spacers 242 can be arranged outside the side walls 238 of the clevis bracket 225.

[0065] The first joint 226 can have a first end 244, which is attached to the drive rod 120, and a second end 246, which is rotatably attached to the second joint 228. The first end 244 of the first joint 226 can be arranged between the side walls 238 of the clevis bracket 225. Additionally, the second joint 228 can comprise a first end 248, which is rotatably attached to the first joint 226, and a second end 250, which is rotatably attached to the third joint 230. In the example shown in the figures, the second joint 228 is essentially L-shaped. However, the second joint 228 could have any other suitable shape.

[0066] The third joint 230 comprises a first end 252, which is attached to the first support rod 122, and a second end 254, which is rotatably attached to the second end 250 of the second joint 228. The second end 250 of the second joint 228 and the second end 254 of the third joint 230 are rotatably attached to the wheel support plate 232 using a common mechanical fastener 256. A trailing wheel 258 may extend from the third joint 230. The trailing wheel 258 may comprise a base 260, which is attached to the third joint 230, and a contact surface 262 of the trailing wheel 258, which may be in rolling contact with the wheel support plate 232.

[0067] The wheel support plate 232 extends between a first end 264, which is rotatably attached to the second and third joints 228, 230, and a second end 266, which is rotatably attached to the mounting bracket 234 (or to the first transverse element 94 of the seat base 60). The common mechanical fastener 256 extends through the wheel support plate 232 and is positioned adjacent to the first end 264 of the wheel support plate 232. The wheel support plate 232 can be made of a polymer material (such as polyoxymethylene), a composite material, a metallic material, or another suitable material.

[0068] The mounting bracket 234 is fixedly attached to the first transverse element 94 of the seat base 60. The mounting bracket 234 comprises a rear wall 268 that rests against the seat base 60 and opposing side walls 270 that extend from the rear wall 268, essentially forming a U-shape. The second end 266 of the wheel support plate 232 is positioned between the side walls 270 of the mounting bracket 234. A mechanical fastener 272 extends transversely through the side walls 270 of the mounting bracket 234 and the wheel support plate 232.

[0069] As in the Fig. As shown in Figures 9 and 15 to 16, the leg support mechanism 56 can include a pair of drive joints 290, a pair of support joints 292, a pair of pantograph linkages 294 and a leg support platform 296 ( Fig. 8) comprise. The pair of drive joints 290, the pair of support joints 292, and the pair of pantograph linkages 294 are arranged at opposite ends of the leg support platform 296. Each of the drive joints 290, support joints 292, and pantograph linkages 294 is arranged as a mirror image of the others. Only one drive joint 290, one support joint 292, and one pantograph linkage 294 are shown in the figures.

[0070] The leg support mechanism 56 is located between a first position or stowed position ( Fig. 15) and a second position or extended position ( Fig. 16) movable. The stowed position of the leg support mechanism 56 corresponds to the first synchronous position of the seat assembly 52 ( Fig. 1) The extended position of the leg support mechanism 56 corresponds to the fourth synchronous position of the seat assembly 52 ( Fig. 6) As described in more detail below, the rotation of the drive rod 120 causes the pantograph linkage 294 to move between the retracted position ( Fig. 15) and the extended position ( Fig. 16) move. The occupant can move his legs and / or feet on the leg support platform 296 ( Fig. 8) rest while the leg support mechanism 56 is in the extended position.

[0071] The pair of drive joints 290 can be positioned at the first rod end 136 and at the second rod end 138 of the drive rod 120. As shown in the Fig. 15 and Fig. As shown in Figure 16, each drive joint 290 can comprise a first wall 298, a second wall 300, and a third wall 302, which interact to form a U-shape. The first wall 298 can be adjacent to the side support plate 72 ( Fig. 7) be positioned to accommodate the drive rod 120. The first wall 298 may have an opening 304 that accommodates the drive rod 120. The second wall 300 may extend inward from the first wall 298 and be positioned parallel to the drive rod 120. The third wall 302 may extend from the second wall 300. In other words, the first and third walls 298, 302 extend from opposite ends of the second wall 300 and together essentially form a U-shape. The third wall 302 may comprise a proximal end 306, which is attached to the second wall 300, and a distal end 308, which is opposite the proximal end 306. The drive rod 120 can extend through the proximal end 306 of the third wall 302, so that the drive joint 290 is in drive engagement with the drive rod 120.The pantograph rods 294 can be rotatably attached to the distal end 308 of the third wall 302. Additionally, a projection 310 can be positioned adjacent to the distal end 308 and extend towards the pantograph rods 294. The projection 310 is configured to support the attachment of the pantograph rods 294 and the drive joint 290.

[0072] The pair of support joints 292 can be positioned within the pair of drive joints 290. Each of the support rods 292 can comprise a first wall 314 and a second wall 316, which interact to form essentially an L-shape. The first wall 314 can be positioned parallel to the drive rod 120 and spaced apart from the second wall 300 of the drive joint 290. A mechanical fastener 318 can extend through the first wall 314 and the drive rod 120 to firmly attach the first wall 314 to the drive rod 120. The second wall 316 can have a proximal end 320 and a distal end 322, which is opposite the proximal end 320. The drive rod 120 can extend through the proximal end 320 of the second wall 316, so that the second wall 316 is in drive engagement with the drive rod 120.

[0073] A support tube 324 can be arranged at the distal end 322 of the second wall 316. The support tube 324 can comprise a body 326 and a pair of hooks 328 extending from opposite longitudinal ends of the body 326. The body 326 can be formed in a tubular configuration and can be positioned substantially perpendicular to the third wall 302 of the drive joint 290. One hook 328 can be connected to the distal end 322 of the second wall 316 of the support joint 292, and a second hook 328 can be connected to the third wall 302 of the drive joint 290.

[0074] As in the Fig. 15 and Fig. As shown in Figure 16, each of the pantograph linkages 294 can comprise a first support joint 330, a pivot joint 332, a second support joint 334, a transverse joint 336, a third support joint 338, and a mounting joint 340. A first end 342 of the first support joint 330 can be rotatably connected to the distal end 308 of the drive joint 290. A second end 344 of the first support joint 330 is rotatably connected to a first end 346 of the transverse joint 336. A middle section 348 of the first support joint 330 (arranged between the first and second ends of the first support joint 330) is rotatably connected to a middle section 350 of the pivot joint 332. A first end 352 of the pivot joint 332 can be rotatably connected to the first support rod 122. The first end 352 can be designed as a hook. A second end 354 of the pivot joint 332 can be rotatably connected to a first end 356 of the second support joint 334.A second end 358 of the second support joint 334 is rotatably connected to a first end 360 of the mounting joint 340. A middle section 362 of the second support joint 334 is rotatably connected to a middle section 364 of the transverse joint 336. A second end 366 of the transverse joint 336 is rotatably connected to a first end 368 of the third support joint 338. A second end 370 of the third support joint 338 is rotatably connected to a second end 372 of the mounting joint 340. The leg support platform 296 (. Fig. 8) can be firmly connected to the mounting joint 340.

[0075] As in the Fig. 9 and Fig. 17 and Fig. As shown in Figure 18, each of the sequencing mechanisms 58 can comprise a slotted element 380, a cam 382, ​​a first linkage 384, and a second linkage 386. The pair of sequencing mechanisms 58 can be arranged outside the leg support mechanism 56. The sequencing mechanisms 58 can be arranged in a mirror-image configuration with respect to each other. Only one of the sequencing mechanisms 58 is shown in the figures. The sequencing mechanism 58 is positioned between a first position ( Fig. 17) and a second position ( Fig. 18) movable. The first position of the sequencing mechanism 58 corresponds to the first synchronization position ( Fig. 1) of the seat assembly 52. ​​The second position of the sequencing mechanism 58 corresponds to the state in which the seat assembly 52 is in the fourth synchronization position ( Fig. 6).

[0076] As in Fig. As shown in Figure 7, the slotted element 380 can be positioned within the first support beam 84 of the seat surface assembly 66. The slotted element 380 can be rigidly connected to the first support beam 84 at its front end 85. More precisely, the slotted element 380 can have one or more flanges 388 ( Fig. 17 and Fig. 18) extending below the first support beam 84, and a mechanical fastening element (not shown) can extend through one or more flanges 388 and into the first support beam 84 to securely fasten the slotted element 380 to the seat surface assembly 66. Additionally, the slotted element 380 can have a slot 390 ( Fig. 18) exhibiting, which is positioned at an angle relative to the seat assembly 66.

[0077] As in the Fig. 17 and Fig. As shown in Figure 18, the cam 382 can be rotatably connected to the slotted element 380. The cam 382 can have a first side 392, a second side 394, and a third side 396, which interact to form essentially a triangular shape. The first side 392 and the second side 394 of the cam 382 can be curved and configured in an essentially convex shape. The third side 396 of the cam 382 can be essentially flat. A projection 398 can be formed between the first and third sides 392 and 396 of the cam 382. The first support rod 122 can extend through the projection 398 and into the slot 390 of the slotted element 380. The cam 382 can be made of a polymer material such as polyoxymethylene, a composite material, a metal material, or another suitable material.

[0078] The first linkage 384 can comprise a first drive joint 400, a second drive joint 402, and a connecting joint 404. The first drive joint 400 can have an opening 406 that corresponds to the cross-sectional shape of the drive rod 120. The drive rod 120 can extend through the opening 406 so that the first drive joint 400 is in drive engagement with the drive rod 120.

[0079] The second drive joint 402 can comprise a first wall 410 and a second wall 412, which interact to form essentially an L-shape. The first wall 410 can be positioned next to the drive rod 120 and, more precisely, abut the drive rod 120. One or more mechanical fasteners 414 can extend through the first wall 410 and into the drive rod 120 to firmly attach the second drive joint 402 to the drive rod 120. The second wall 412 of the second drive joint 402 can be spaced apart along the drive rod 120 from the first drive joint 400 and run essentially parallel to the first drive joint 400.

[0080] The connecting joint 404 can comprise a first end 418, which is rotatably attached to the cam 382, ​​and a second end 420, which is rotatably attached to the first and second drive joints 400, 402. More precisely, the first end 418 of the connecting joint 404 can be rotatably attached to the cam 382 at a position between the first and second sides 392, 394 of the cam 382. The second end 420 of the connecting joint 404 can be positioned between the first drive joint 400 and the second wall 412 of the second drive joint 402. A mechanical fastening element 422 can extend through the first drive joint 400, the second end 420 of the connecting joint 404 and the second wall 412 of the second drive joint 402 to rotatably attach the connecting joint 404 to the first and second drive joints 400, 402.

[0081] The second linkage 386 can comprise a first joint 424, a second joint 426, and a trailing wheel 428. The first joint 424 can comprise a first end 430 and a second end 432 opposite the first end 430. The first end 430 can have an opening 439 that receives the second support rod 124, allowing the first joint 424 to be fixedly attached to the second support rod 124. The second end 432 can be rotatably coupled to the second joint 426. The second joint 426 can have a first end 434 and a second end 436 opposite the first end 434. The first end 434 is attached to the trailing wheel 428. The first and second joints 424, 426 can be rotatably fastened using a mechanical fastening element 438 which extends through the second end 432 of the first joint 424 and the second end 436 of the second joint 426.

[0082] A support plate 440 can be positioned adjacent to the slotted element 380. The support plate 440 can be fixed to the first support beam 84 ( Fig. 7) of the seat surface assembly 66. The first end 434 of the second joint 426 can be fixedly attached to the support plate 440. A mounting bracket 442 can be arranged at the first end 434 of the second joint 426 and fixedly attached to the support plate 440. The mounting bracket 442 can extend over the caster wheel 428. A mechanical fastening element 444 can extend through the caster wheel 428 and into the support plate 440, so that the caster wheel 428 is rotatable relative to the support plate 440 and the bracket 442.

[0083] The trailing wheel 428 can roll against the second and third sides 394, 396 of the cam 382. As in Fig. As shown in Figure 17, the trailing wheel 428 can touch the second side 394 of the cam 382 when the seat assembly 52 is in the first synchronization position ( Fig. 1) As in Fig. As shown in Figure 18, the trailing wheel 428 can touch the third side 396 of the cam 382 and, more precisely, rest against the projection 398 when the seat assembly 52 is in the fourth synchronization position ( Fig. 2).

[0084] With reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, Fig. 20, Fig. 21, Fig. 22, Fig. 23, Fig. 24 to Fig. The functionality of piece of furniture 50 will now be explained in section 25.

[0085] As in the Fig. As shown in figures 1 to 3 and 19 to 21, the seat assembly 52 can be adjusted between the nominal rocking position ( Fig. 1 and Fig. 19), the backward rocking position ( Fig. 2 and Fig. 20) and the forward rocking position ( Fig. 3 and Fig. 21) rocking when the leg support mechanism 56 is in the retracted position. The seat assembly 52 can be manually moved by an occupant seated in the furniture 50 between the nominal rocking position, the backward rocking position, and the forward rocking position. To move the seat assembly 52 from the nominal rocking position to the backward rocking position, the occupant can apply a force in the backward direction (e.g., toward a rear end 450 of the furniture 50) to the backrest assembly 64. This causes the backrest assembly 64 to rock backward and simultaneously rocks the seat surface assembly 66 backward relative to the seat base 60. The movement of the seat surface assembly 66 relative to the seat base 60 simultaneously causes the first and second springs 104, 106 of the rocking spring assembly 90 to move and bend backward.

[0086] Additionally, the backward movement of the seat assembly 66 simultaneously causes the first support rod 122 to move in a corresponding direction. Since the third joint 230 is attached to the first support rod 122, the movement of the first support rod 122 causes the first end 252 of the third joint 230 to move in a corresponding direction, thereby pivoting the second end 254 of the third joint 230 forward (e.g., toward a front end 452 of the furniture 50). The second end 254 of the third joint 230 is attached to the wheel support plate 232 and simultaneously causes the first end 264 of the wheel support plate 232 to pivot forward. The movement of the wheel support plate 232 simultaneously causes the second joint 228 and the first joint 226 to move in a corresponding direction.

[0087] As the wheel support plate 232 continues to move, it contacts the contact surface 262 of the trailing wheel 258. The contact between the wheel support plate 232 and the trailing wheel 258 prevents the wheel support plate 232 from pivoting further forward toward the front support plate 74, and thus prevents the seat assembly 52 from moving further backward. In other words, when the wheel support plate 232 contacts the contact surface 262 of the trailing wheel 258, the seat assembly 52 is in a fully rearward-tilted position.

[0088] To move the seat assembly 52 from the nominal rocking position to the forward rocking position, the occupant can apply a forward force to the seat surface assembly 66. This causes the backrest assembly 64 to rock forward and simultaneously rocks the seat surface assembly 66 forward relative to the seat base 60. The movement of the seat surface assembly 66 relative to the seat base 60 also causes the first and second springs 104, 106 of the rocking spring assembly 90 to move and bend forward.

[0089] Additionally, the forward movement of the seat assembly 66 simultaneously causes the first support rod 122 to move in a corresponding direction. Since the third joint 230 is attached to the first support rod 122, the movement of the first support rod 122 causes the first end 252 of the third joint 230 to move in a corresponding direction, thereby moving the second end 254 of the third joint 230 backward. The second end 254 of the third joint 230 is attached to the wheel support plate 232 and simultaneously causes the wheel support plate 232 to pivot backward. The movement of the second end 254 of the third joint 230 additionally causes the second joint 228 to pivot backward. Since the first end 248 of the second joint 228 is attached to the second end 246 of the first joint 226, the movement of the second joint 228 causes the first joint 226 to rotate about the drive rod 120.As the first joint 226 continues to rotate, its first end 244 contacts the clevis bracket 225, more precisely, the rear wall 236 of the clevis bracket 225. This limits the further rotation of the first joint 226 and prevents the seat assembly 52 from moving further forward. In other words, when the first end 244 of the first joint 226 contacts the rear wall 236 of the clevis bracket 225, the seat assembly 52 is in a fully forward-rocking position.

[0090] A person skilled in the art should recognize that the seat assembly 52 can move from the forward rocking position to the backward rocking position and vice versa. Additionally, the seat assembly 52 can move from any position between the nominal rocking position, the forward rocking position, and the backward rocking position towards either the forward rocking position or the backward rocking position.

[0091] As in the Fig. 22, Fig. 23, Fig. 24 to Fig. As shown in 25, the seat assembly 52 can be positioned between the first synchronization position ( Fig. 22), the second synchronous position ( Fig. 23), the third synchronous position ( Fig. 24) and the fourth synchronization position ( Fig. 25). To move the seat assembly 52 from the first synchronous position to the fourth synchronous position, the user of the furniture 50 can operate a user control (e.g., switches, knobs and / or buttons) to cause the motor 126 to move the drive actuator mechanism 54 from the first position ( Fig. 22) into second position ( Fig. 25) to move. More precisely, the motor 126 of the drive actuator mechanism 54 drives the carriage 132 to move from the second end 174 of the rail 130 to the first end 172 of the rail 130 along the rail 130.

[0092] From the first synchronization position ( Fig. 22) to the second synchronization position ( Fig. 23) The carriage 132 slides from the second end 174 of the rail 130 to the first end 172 of the rail 130. As the carriage 132 moves along the rail 130, the first and second pairs of joints 186, 188 drive the rotation of the drive rod 120. The rotation of the drive rod 120 simultaneously causes the clevis bracket 225 of the tilting linkage mechanism 55 to rotate so that the clevis bracket 225 abuts the first joint 226 when the seat assembly 52 is in the second synchronization position. The rotation of the clevis bracket 225 causes the first joint 226 and the second joint 228 to rotate, which in turn causes the third joint 230 and the wheel support plate 232 to rotate. Since the third joint 230 receives the first support rod 122, the rotation of the wheel support plate 232 and the third joint 230 causes the seat assembly 52 to begin moving from the nominal rocking position towards the backward rocking position.

[0093] Additionally, the rotation of the drive rod 120 simultaneously causes the drive joint 290 of the leg support mechanism 56 to rotate, whereupon the pantograph linkages 294 extend. Finally, the rotation of the drive rod 120 simultaneously causes the first linkage 384 to rotate in a corresponding direction. The rotation of the first linkage 384 causes the cam 382 to rotate such that the trailing wheel 428 of the sequencing mechanism 58 rolls against the second side 394 of the cam 382.

[0094] From the second synchronization position ( Fig. 23) to the third synchronization position ( Fig. 24) The carriage 132 continues to slide towards the first end 172 of the rail 130 and causes a further rotation of the drive rod 120. Since the carriage 132 is attached to the drive rod 120, the carriage 132 and the rail 130 rotate simultaneously with the drive rod 120.

[0095] A further rotation of the drive rod 120 simultaneously causes a further rotation of the clevis 225 of the tilting linkage mechanism 55, so that the clevis 225 drives the rotation of the first, second and third joints 226, 228, 230 and thereby causes the wheel support plate 232 to rotate into the second position ( Fig. 13), when the seat assembly 52 is in the third synchronous position. The rotation of the wheel support plate 232 and the third joint 230 causes the seat assembly 52 to tilt further backwards and bring the seat assembly 52 into the backward rocking position ( Fig. 2).

[0096] Furthermore, a further rotation of the drive rod 120 simultaneously causes the drive joint 290 to rotate further, so that the leg support mechanism 56 (i.e. the pantograph linkages 294) is brought into the extended position when the seat assembly 52 is in the third synchronous position.

[0097] Furthermore, a further rotation of the drive rod 120 simultaneously causes the first linkage 384 of the sequencing mechanism 58 to rotate in the corresponding direction. The rotation of the first linkage 384 causes the cam 382 to rotate so that the trailing wheel 428 contacts the third side 396 of the cam 382 when the seat assembly 52 is in the third synchronization position.

[0098] When the pantograph linkages 294 fully extend into the extended position ( Fig. 16), the drive rod 120 is prevented from rotating further. Subsequently, the motor 126 causes the rail 130 to move backward, so that the first end 172 of the rail 130 slides toward the carriage 132. In response, the trailing wheel 184 of the drive actuator mechanism 54 contacts the cam 134 when the seat assembly 52 is in the third synchronization position. The backward movement of the rail 130 causes the support joint 158 ​​to rotate and simultaneously rotates the second support rod 124.

[0099] The rotation of the second support rod 124 causes a rotation of the second linkage 386. More precisely, the rotation of the second support rod 124 causes a simultaneous rotation of the first linkage 424, since the second support rod 124 is rigidly connected to the first linkage 424. The movement of the first joint 424 causes the second joint 426 to move forward. Since the second joint 426 is rigidly connected to the seat assembly 66, the movement of the second joint 426 causes the seat assembly 52 to begin moving from the upright position toward the reclined position. Accordingly, the seat assembly 66 moves forward. As the seat assembly 66 moves forward, the slotted element 380 slides in a corresponding direction relative to the first support rod 122 and the cam 382.Since the trailing wheel 428 is rigidly connected to the seat assembly 66, the trailing wheel 428 moves forward and rolls against the third side 396 of the cam 382. Since the third side 396 of the cam 382 is essentially flat, the cam 382 allows movement of the trailing wheel 428 and the seat assembly 66, so that the seat assembly 52 begins to tilt from the upright position towards the reclined position.

[0100] From the third synchronization position ( Fig. 24) to the fourth synchronization position ( Fig. 25) The motor 126 continues to cause the rail 130 to move backwards. The trailing wheel 184, rolling, contacts the second side 206 of the cam 134 to guide the movement of the rail 130.

[0101] The first end 172 of the rail 130 reaches the carriage 132 when the seat assembly 52 is in the fourth synchronization position. Further movement of the rail 130 causes the support joint 158 ​​to rotate further, simultaneously rotating the second support rod 124 further. Further rotation of the second support rod 124 causes a further rotation of the second linkage 386. In response, the seat surface assembly 66 and the slotted element 380 move further forward. Since the trailing wheel 428 is fixed to the seat surface assembly 66, the trailing wheel 428 moves further forward so that it rests against the projection 398 when the seat assembly 52 is in the fourth synchronization position. Accordingly, the seat assembly 52 tilts further backward and is brought into the reclined position.

[0102] As in the Fig. 22, Fig. 23, Fig. 24 to Fig. As shown in Figure 25, the seat assembly 52 first moves the leg support mechanism 56 from the stowed position to the extended position and then moves the seat assembly 52 to the reclined or inclined position. More precisely, the motor 126 provides a stroke of 5.5 inches to move the leg support mechanism 56 from the stowed position to the extended position and a stroke of 3.5 inches to move the seat assembly 52 from the upright position to the reclined position. In some configurations, there may be a transition phase in which the seat assembly 52 begins to move from the upright position while the leg support mechanism 56 moves to the extended position. Additionally, the tilting linkage mechanism 55 moves the seat assembly 52 from the nominal rocking position to the backward rocking position simultaneously with the movement of the leg support mechanism 56 from the stowed position to the extended position.

[0103] With reference to the Fig. 26, Fig. 27, Fig. 28, Fig. 29, Fig. 30, Fig. 31, Fig. 32, Fig. 33, Fig. 34, Fig. 35, Fig. 36, Fig. 37, Fig. 38, Fig. 39, Fig. 40, Fig. 41, Fig. 42, Fig. 43, Fig. 44 to Fig. 45 Another piece of furniture 550 is provided. The piece of furniture 550 can comprise a seat base 560, a seat assembly 552, a drive actuator mechanism 554, a pair of tilting linkage mechanisms 555, a leg support mechanism 556, and a pair of sequencing mechanisms 558. As described in more detail below, the seat assembly 552 is movable relative to the seat base 560. The seat assembly 552 can be moved between a first rocking position or a nominal rocking position ( Fig. 26), a second swing position or a backward swing position ( Fig. 28) and a third swing position or a forward swing position ( Fig. 29) rocking forwards and backwards. In addition, the seat assembly 552 can move between a first synchronous position ( Fig. 1), a second synchronous position or a first intermediate position ( Fig. 30), a third synchronous position or a second intermediate position ( Fig. 31) and a fourth synchronization position ( Fig. 32) move.

[0104] The seat base 560, the seat assembly 552, the drive actuator mechanism 554, and the leg support mechanism 556 may be identical or substantially similar to the seat base 60, the seat assembly 52, the drive actuator mechanism 54, and the leg support mechanism 56 of the furniture piece 50. For example, the seat assembly 552 may comprise a backrest assembly 551 and a seat surface assembly 553. Accordingly, the seat base 560, the seat assembly 552, the drive actuator mechanism 554, and the leg support mechanism 556, as well as their respective functions, will not be described again in detail.

[0105] The drive actuator mechanism 554 can comprise a drive rod 562, a first support rod 564, a second support rod 566, and a motor 568. The drive actuator mechanism 554 is located between a first position ( Fig. 26) and a second position ( Fig. 32) movable. The first position of the drive actuator mechanism 554 corresponds to the first synchronous position of the seat assembly 552 ( Fig. 26). The second position of the drive actuator mechanism 554 corresponds to the fourth synchronous position of the seat assembly 552 ( Fig. 32). Similarly, the leg support mechanism 556 can be switched between a first leg support position or a stowed position ( Fig. 26) and a second leg support position or extended position ( Fig. 32) movable. The stowed position of the leg support mechanism 556 corresponds to the first synchronous position of the seat assembly 552 ( Fig. 26). The extended position of the leg support mechanism 556 corresponds to the extended position of the seat assembly 552 ( Fig. 32).

[0106] As in Fig. 33 and with further reference to the Fig. 34, Fig. 35 to Fig. As shown in Figure 36, each of the tilting linkage mechanisms 555 can comprise a set of linkages 570, a cam 572, a wheel support plate 574, and a bracket 576. The pair of tilting linkage mechanisms 555 can be arranged on opposite sides of the drive actuator mechanism 554. The tilting linkage mechanisms 555 can be arranged in a mirror-image arrangement relative to each other. Only one of the tilting linkage mechanisms 555 is shown in the figures. The tilting linkage mechanism 555 is positioned between a first position ( Fig. 34), a second position ( Fig. 35) and a third position ( Fig. 36) movable. The first position of the tilting linkage mechanism 555 corresponds to the first synchronization position ( Fig. 26) and the nominal swing position ( Fig. 26) of the seat assembly 552. The second position of the tilting linkage mechanism 555 corresponds to the state in which the seat assembly 552 is in the fourth synchronous position ( Fig. 32) and the reverse rocking position ( Fig. 28). The third position of the tilting linkage mechanism 555 corresponds to the state in which the seat assembly 552 is in the forward rocking position ( Fig. 29).

[0107] The linkages 570 can comprise a first joint 580, a second joint 582, a third joint 584, a fourth joint 586, a fifth joint 588, and a sixth joint 590. A first end 592 of the first joint 580 can receive the second support rod 566, and a second end 594 of the first joint 580 can be rotatably attached to a first end 596 of the second joint 582. A second end 598 of the second joint 582 can be rotatably attached to a first end 600 of the third joint 584. A second end 602 of the third joint 584 can be rotatably attached to a first end 604 of the fourth joint 586. The drive rod 120 can extend through an intermediate section 606 (arranged between the first and second ends) of the third joint 584. A second end 608 of the fourth joint 586 can be rotatably attached to a first end 610 of the fifth joint 588.A first trailing wheel 612 can be arranged at the second end 608 of the fourth joint 586 and at the first end 610 of the fifth joint 588. A second end 614 of the fifth joint 588 can be rotatably attached to the first support rod 564. A first end 616 of the sixth joint 590 can be rotatably attached to the first support rod 564 and positioned within the second end 614 of the fifth joint 588. A second trailing wheel 618 can be arranged at a second end 620 of the sixth joint 590. A pair of recesses 622 can be formed in opposite longitudinal sides 624 of the sixth joint 590. The pair of recesses 622 can be positioned on an intermediate section 626 (arranged between the first and second ends 616, 620) of the sixth joint 590. The recesses 622 can be formed in a partially circular shape, so that at least one of the recesses 622 can accommodate the first trailing wheel 612.

[0108] The cam 572 can be fixedly attached to the drive rod 562 and spaced inwards from the linkages 570. More precisely, a connecting bracket 630 can fixly attach the cam 572 to the drive rod 562. The connecting bracket 630 can comprise a back wall 632 and opposing side walls 634 extending from and interacting with the back wall 632 to essentially form a U-shape. The cam 572 can be positioned between the side walls 634 of the connecting bracket 630. The drive rod 562 can be positioned between the cam 572 and the back wall 632 of the connecting bracket 630. One or more mechanical fasteners 636 can extend through the side walls 634 of the connecting bracket 630 and the cam 572. Additionally, a mechanical fastening element 638 can extend through the rear wall 632 of the connecting bracket 630, the drive rod 562 and into the cam 572.A spacer 640 can be arranged between the connecting bracket 630 and the third joint 584 of the linkage 570.

[0109] The cam 572 can have a first side 642 and a second side 644 that interact to form essentially a closed U-shape. The first side 642 of the cam 572 can be curved and essentially form a U-shape. The second side 644 of the cam 572 can be essentially flat and interact with the first side 642 of the cam 572. The rear wall 632 of the connecting bracket 630 and the drive rod 562 can be arranged adjacent to the second side 644 of the cam 572. The cam 572 can be made of a polymer material (such as polyoxymethylene), a composite material, a metallic material, or another suitable material.

[0110] The wheel support plate 574 can extend between a first end 650 and a second end 652, which is opposite the first end 650. The first end 650 of the wheel support plate 574 can be rotatably attached to the sixth joint 590 at a position between the intermediate section 626 and the second end 620 of the sixth joint 590. The second end 652 of the wheel support plate 574 can be rotatably attached to the seat base 560 using the bracket 576. The wheel support plate 574 can have a recess 654, which may be located near the first end 650 of the wheel support plate 574. The recess 654 can be formed in a lateral side 656 of the wheel support plate 574, which adjoins the second trailing wheel 618. The recess 654 can be partially circular, so that the recess 654 can accommodate the second trailing wheel 618.The wheel support plate 574 can be made from a polymer material (such as polyoxymethylene), a composite material, a metallic material or another suitable material.

[0111] The bracket 576 can be fixedly attached to the seat base 560. The bracket 576 can comprise a rear wall 660 that abuts the seat base 560 and opposing side walls 662 that interact with the rear wall 660 to essentially form a U-shape. The second end 652 of the wheel support plate 574 is positioned between the side walls 662 of the bracket 576. A mechanical fastener 664 extends transversely through the side walls 662 of the bracket 576 and the wheel support plate 574 to rotatably attach the wheel support plate 574 to the bracket 576.

[0112] As in the Fig. As shown in Figures 33 and 37 to 38, each of the sequencing mechanisms 558 can comprise a slotted element 680, a cam 682, a first linkage 684, and a second linkage 686. The pair of sequencing mechanisms 558 can be arranged outside the pair of leg support mechanisms 556. The sequencing mechanisms 558 can be arranged in a mirror-image configuration with respect to each other. Only one of the sequencing mechanisms 558 is shown in the figures. The sequencing mechanism 558 is positioned between a first position ( Fig. 37) and a second position ( Fig. 38) movable. The first position of the sequencing mechanism 558 corresponds to the first synchronization position of the seat assembly 552 ( Fig. 26). The second position of the sequencing mechanism 558 corresponds to the fourth synchronization position of the seat assembly 552 ( Fig. 32).

[0113] The slotted element 680, the cam 682, and the first linkage 684 may be identical or substantially similar to the slotted element 380, the cam 382, ​​and the first linkage 384 of the sequencing mechanism 58. Accordingly, the slotted element 680, the cam 682, and the first linkage 684 will not be described again in detail.

[0114] The slotted element 680 can have a slot 688. The cam 682 can be rotatably coupled to the slotted element 680. The cam 682 can have a first side 690, a second side 692, and a third side 694, which interact to form essentially a triangular shape. A projection 696 can be formed between the first and third sides 690, 694 of the cam 682. The first support rod 564 can extend through the projection 696 and into the slot 688 of the slotted element 680.

[0115] The first linkage 684 can comprise a first drive joint 698, a second drive joint 700, and a connecting joint 702. The drive rod 562 can extend through the first drive joint 698, and the second drive joint 700 can be attached to the drive rod 562. Accordingly, the first and second drive joints 698, 700 are drive-engaged with the drive rod 562. The connecting joint 702 can comprise a first end 704, which is rotatably attached to the cam 682, and a second end 706, which is rotatably attached to the first and second drive joints 698, 700. More precisely, the first end 704 of the connecting joint 702 can be fixed to the cam 682 at a point between the first and second sides 690, 692 of the cam 682. The second end 706 of the connecting joint 702 can be positioned between the first and the second drive joint 698, 700.

[0116] A trailing wheel 710 can be coupled to the cam 682 and attached to the seat assembly 552 by a bracket 712. A mechanical fastening element 714 can extend through the trailing wheel 710. The trailing wheel 710 can be in rolling engagement with the second and third sides 692, 694 of the cam 682. As in Fig. As shown in Figure 37, the trailing wheel 710 can touch the second side 692 of the cam 682 when the seat assembly 552 is in the first synchronization position. As shown in Fig. As shown in Figure 38, the trailing wheel 710 can touch the third side 694 of the cam 682 and, in particular, rest against the projection 696 when the seat assembly 552 is in the fourth synchronization position.

[0117] The second linkage 686 can comprise a first joint 720, a second joint 722, and a mounting bracket 724. The first joint 720 can comprise a first end 726 and a second end 728 opposite the first end 726. The first end 726 can accommodate the second support rod 566 and can be fixedly attached to the second support rod 566. The second end 728 can be rotatably attached to the second joint 722. The second joint 722 can comprise a first end 730 rotatably attached to the mounting bracket 724 and a second end 732 rotatably attached to the second end 728 of the first joint 720. The mounting bracket 724 can be fixedly attached to the seat assembly 552.

[0118] With reference to the Fig. 26, Fig. 27, Fig. 28, Fig. 29, Fig. 30, Fig. 31, Fig. 32, Fig. 33, Fig. 34, Fig. 35, Fig. 36, Fig. 37, Fig. 38, Fig. 39, Fig. 40, Fig. 41, Fig. 42, Fig. 43, Fig. 44 to Fig. Section 45 now explains how the piece of furniture 550 works.

[0119] As in the Fig. 26 and Fig. 28 and Fig. As shown in 29, the seat assembly 552 can be set between the nominal rocking position ( Fig. 26), the backward rocking position ( Fig. 28) and the forward rocking position ( Fig. 29) rocking when the leg support mechanism 556 is in the stowed position. In an example, when the seat assembly 552 is in the backward rocking position, it may be inclined backward by about 15 degrees relative to the nominal rocking position, and when the seat assembly 552 is in the forward rocking position, it may be inclined forward by about 7.5 degrees relative to the nominal rocking position.

[0120] The seat assembly 552 can be manually operated by an occupant seated on the furniture 550. To move the seat assembly 552 from the nominal rocking position to the backward rocking position, the occupant can apply a force to the backrest assembly 551 in a backward direction (e.g., towards a rear end 740 of the furniture 550). This causes the backrest assembly 551 to rock backward and simultaneously rocks the seat surface assembly 553 backward relative to the seat base 560. The movement of the seat surface assembly 553 causes the first support rod 564 to move in a corresponding direction. Since the sixth joint 590 is attached to the first support rod 564, the sixth joint 590 moves about the first end 616 of the sixth joint 590 and thereby causes the wheel support plate 574 to pivot about the second end 652 and in a forward direction (e.g. in the direction of a front end 742 of the piece of furniture 550).

[0121] Additionally, the movement of the first support rod 564 causes the fifth joint 588 to pivot at its second end 614. Since the fifth joint 588 is connected to the fourth joint 586, the fourth joint 586 is connected to the third joint 584, the third joint is connected to the second joint 582, and the second joint 582 is connected to the first joint 580, the movement of the fifth joint 588 simultaneously causes the fourth, third, second, and first joints 586, 584, 582, 580 to move in a corresponding direction.

[0122] As the sixth joint 590 and the wheel support plate 574 continue to move, the second trailing wheel 618 contacts the recess 654 of the wheel support plate 574. The contact of the second trailing wheel 618 with the recess 654 prevents further movement of the sixth joint 590 and thus prevents further backward movement of the seat assembly 552. In other words, when the second trailing wheel 618 comes into contact with the recess 654 of the wheel support plate 574, the seat assembly 552 is in a fully rearward rocking position.

[0123] To move the seat assembly 552 from the nominal rocking position to the forward rocking position, the occupant can apply a forward force to the seat surface assembly 553. This causes the seat assembly 552 to rock forward relative to the seat base 560. The movement of the seat assembly 552, more precisely the seat surface assembly 553, simultaneously causes the first support rod 564 to move in a corresponding direction. Since the sixth joint 590 is attached to the first support rod 564, the movement of the first support rod 564 causes the sixth joint 590 to pivot upward about the first end 616 of the sixth joint 590 in the direction of the seat surface assembly 553.

[0124] Additionally, the movement of the first support rod 564 causes the fifth joint 588 to pivot upwards about its second end 614. Since the fifth joint 588 is connected to the fourth joint 586, the fourth joint 586 is connected to the third joint 584, the third joint is connected to the second joint 582, and the second joint 582 is connected to the first joint 580, the movement of the fifth joint 588 simultaneously causes the fourth, third, second, and first joints 586, 584, 582, 580 to move in a corresponding direction.

[0125] As the sixth joint 590 and the wheel support plate 574 continue to move, the first trailing wheel 612 contacts the recess 622 of the sixth joint 590, and the second trailing wheel 618 contacts the first side 642 of the cam 572. Accordingly, the first and second trailing wheels 612 and 618 restrict the further movement of the fifth and sixth joints 588 and 590, respectively, and thus prevent the seat assembly 552 from moving further forward. In other words, when the first trailing wheel 612 contacts the recess 6222 of the sixth joint 590 and the second trailing wheel 618 contacts the first side 642 of the cam 572, the seat assembly 552 is in a fully forward-rocking position.

[0126] A person skilled in the art should recognize that the seat assembly 552 can move from the forward rocking position to the backward rocking position and vice versa. Additionally, the seat assembly 552 can move from any position between the nominal rocking position, the forward rocking position, and the backward rocking position towards either the forward rocking position or the backward rocking position.

[0127] From the first synchronization position ( Fig. 42) to the second synchronization position ( Fig. 43) The motor 568 drives the rotation of the drive rod 562. The rotation of the drive rod 562 simultaneously causes the rotation of the linkage set 570 and the cam 572. The rotation of the cam 572 causes the cam 572 to come into contact with the second trailing wheel 618 and causes the rotation of the sixth joint 590. The rotation of the sixth joint 590 causes the wheel support plate 574 to rotate, so that the seat assembly 552 moves out of the nominal rocking position and begins to tilt towards the reverse rocking position. Additionally, the rotation of the drive rod 562 causes the leg support mechanism 556 to move out of the stowed position and begin to extend towards the extended position. Finally, the rotation of the drive rod 562 causes the first linkages 684 of the sequencing mechanism 558 to rotate, thereby rotating the cam 682.Since the trailing wheel 710 is in contact with the second side 692 of the cam 682, the seat assembly 552 is prevented from moving out of the upright position and towards the reclined position.

[0128] From the second synchronization position ( Fig. 43) to the third synchronization position ( Fig. 44) The motor 568 further drives the rotation of the drive rod 562. This further rotation of the drive rod 562 simultaneously causes a further rotation of the linkage 570, the cam 572, and thus the wheel support plate 574. Accordingly, the seat assembly 552 tilts further towards the rearward rocking position. Additionally, a further rotation of the drive rod 562 causes the leg support mechanism 556 to extend further towards the extended position. In one example, when the seat assembly 552 is in the third synchronous position, it is positioned at a body tilt of approximately 9 degrees relative to the nominal rocking position.

[0129] A further rotation of the drive rod 562 also causes the first linkages 684 of the sequencing mechanism 558 to rotate, thereby rotating the cam 682. The trailing wheel 710 ( Fig. 44) begins to contact the third side 694 of the cam 682, allowing the seat assembly 552 to move out of the upright position and recline. More precisely, the rotation of the drive rod 562 causes the third joint 584 of the tilting linkage mechanism 555 to rotate, thereby rotating the first and second joints 580, 582. The rotation of the first joint 580 causes the second support rod 566 to rotate, and the rotation of the second support rod 566 causes the seat assembly 552 to begin reclining, since the first and second joints 720, 722 of the second linkage 686 are attached to the seat assembly 552 by means of the bracket 724.

[0130] From the third synchronization position ( Fig. 44) to the fourth synchronization position ( Fig. 45) The motor 568 further drives the rotation of the drive rod 562 and additionally drives the rotation of the second support rod 566. The further rotation of the drive rod 562 simultaneously causes a further rotation of the linkage 570, the cam 572, and thus the wheel support plate 574. Accordingly, the seat assembly 552 is brought into the rearward-tilting position when the tilting linkage mechanism 555 is in the second position. Additionally, a further rotation of the drive rod 562 causes the leg support mechanism 556 to be moved into the extended position. Finally, a further rotation of the drive rod 562 causes the first linkages 684 of the sequencing mechanism 558 to rotate and thereby rotate the cam 682. The trailing wheel 710 continues to roll against the third side 694 of the cam 682, allowing the seat assembly 552 to recline further.The motor 568 of the drive actuator mechanism 554 drives the rotation of the second support rod 566. The rotation of the second support rod 566 drives the rotation of the second linkage 686 and further drives the seat assembly 552 to be moved into the reclined position when the sequencing mechanism 558 is in the second position.

[0131] As in the Fig. 42, Fig. 43, Fig. 44 to Fig. As shown in Figure 45, the seat assembly 552 first moves the leg support mechanism 556 from the first synchronous position to the fourth synchronous position and then moves the seat assembly 552 from the upright position to the reclined or lying position. In some configurations, there may be a transition phase in which the seat assembly 552 moves out of the upright position while the leg support mechanism 556 moves into the extended position.

[0132] Additionally, the tilting linkage mechanism 555 moves the seat assembly 552 from the nominal rocking position to the reclined position, simultaneously with the movement of the leg support mechanism 56 from the stowed position to the extended position and the movement of the seat assembly 552 from the upright position to the reclined position. More precisely, the seat assembly 552 is moved into a position in which the body is inclined by approximately 9 degrees relative to the nominal rocking position when the leg support mechanism 556 is in the extended position, and into a position in which the body is inclined by approximately 14 degrees relative to the nominal rocking position when the seat assembly 552 is in the reclined position.

[0133] The foregoing description of the embodiments serves for illustration and description purposes. It makes no claim to completeness and does not limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but are, where applicable, interchangeable and may be used in a selected embodiment, even if they are not specifically shown or described. The same can also be varied in many respects. Such variations are not to be regarded as a deviation from the disclosure, and all such modifications are deemed to be within the scope of the disclosure. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 18 / 143,240

[0001]

Claims

[1] Piece of furniture, comprising: a seat base; a seat assembly which is movable relative to the seat base, wherein the seat assembly is movable between a first reclining position and a second reclining position and wherein the seat assembly is movable between a first tilting position and a second tilting position; a leg support platform that is connected to the seat assembly and is movable between a first leg support position and a second leg support position; a drive rod which is rotatable relative to the seat assembly, wherein a rotation of the drive rod causes the seat assembly to move from the first tilt position to the second tilt position and causes the leg support platform to move from the first leg support position to the second leg support position; and a sequencing mechanism comprising a cam attached to the drive rod and a trailing wheel attached to the seat assembly, wherein the cam is configured to prevent the seat assembly from moving between the first reclining position and the second reclining position, while the seat assembly moves between the first tilting position and the second tilting position, and while the leg support platform moves between the first leg support position and the second leg support position. [2] Furniture according to claim 1, wherein the rotation of the drive rod causes a first surface of the cam to come into contact with the trailing wheel, and the subsequent rotation of the drive rod causes a second surface of the cam to come into contact with the trailing wheel. [3] Furniture according to claim 2, wherein the sequencing mechanism is configured such that when the first surface of the cam comes into contact with the trailing wheel, it prevents the seat assembly from tilting from the first reclining position to the second reclining position, and the sequencing mechanism is configured such that when the second surface of the cam comes into contact with the trailing wheel, it allows the seat assembly to tilt from the first reclining position to the second reclining position. [4] Furniture according to claim 1, further comprising a motor which drives the rotation of the drive rod. [5] Furniture according to claim 4, wherein: The motor's operation controls the movement of the seat assembly to achieve intermediate positions between the first reclining position and the second reclining position, and intermediate positions between the first tilting position and the second tilting position; and The activation of the motor controls the movement of the leg support platform to achieve intermediate positions between the first leg support position and the second leg support position. [6] Furniture according to claim 4, further comprising: a rail attached to the motor; a carriage attached to the drive rod and coupled to the rail; and a support rod that can be rotated relative to the seat assembly and is coupled to the motor. [7] Furniture according to claim 6, wherein: the motor drives the carriage to glide along the rail, and simultaneously rotates the drive rod; and The rotation of the drive rod causes the seat assembly to move simultaneously between the first tilt position and the second tilt position, and the leg support platform to move simultaneously between the first leg support position and the second leg support position. [8] Furniture according to claim 6, wherein: the motor allows the rail to slide relative to the carriage and simultaneously rotates the support rod; and The rotation of the support bar causes the seating assembly to move between the first reclining position and the second reclining position. [9] Furniture according to claim 1, further comprising: a tilting linkage mechanism with a fork head bracket which engages with the drive rod in a drive-related manner, and a wheel support plate which is pivotably attached to the seat base. [10] Furniture according to claim 9, wherein the rotation of the drive rod causes the fork head bracket to drive the rotation of the wheel support plate, and the rotation of the wheel support plate causes the seat assembly to move relative to the seat base between the first tilt position and the second tilt position. [11] Furniture according to claim 9, wherein the tilting linkage mechanism comprises: a first joint rotatably attached to the fork head mount and the wheel support plate, wherein the first joint is movable independently of the fork head mount, and a second joint which is rotatably attached to the wheel support plate and has a trailing wheel extending from the second joint. [12] Furniture according to claim 11, wherein the seat assembly is rockable between a first rocking position and a second rocking position, the first and second joints and the wheel support plate rotate simultaneously when the seat assembly moves between the first and second rocking positions; and The seating assembly can be rocked between the first rocking position and the second rocking position when the leg support platform is in the first leg support position. [13] Furniture according to claim 12, wherein the seat assembly, when the trailing wheel touches the wheel support plate, is in the first rocking position and is prevented from rocking further backwards. [14] Furniture according to claim 12, wherein when the first joint touches the fork head support the seat assembly is in the second rocking position and is prevented from rocking further forward. [15] Piece of furniture, comprising: a seat base; a seat assembly movable relative to the seat base, wherein the seat assembly is movable between an upright position and a reclined position, and wherein the seat assembly is movable between a nominally tilted position and a backward tilted position; a leg support platform connected to the seat assembly, wherein the leg support platform is movable between a stowed position and an extended position; a drive rod rotatable relative to the seat assembly, wherein a rotation of the drive rod causes the leg support platform to move from the stowed position to the extended position; a support bar which is rotatable relative to the seat assembly, wherein the rotation of the support bar causes the seat assembly to move between the upright position and the reclined position; and a tilting linkage mechanism comprising a set of linkages attached to the drive rod and support rod, a first cam attached to the drive rod, and a first trailing wheel movable in rolling contact with the first cam, as well as a wheel support plate rotatably attached to the seat base, wherein the tilting linkage mechanism is configured such that the seat assembly can move simultaneously between the nominally tilted position and the backward tilted position, while the leg support platform moves between the stowed position and the extended position, and the seat assembly moves between the upright position and the reclined position. [16] Furniture according to claim 15, further comprising: a sequencing mechanism with a second cam attached to the drive rod and a second trailing wheel attached to the seat assembly, wherein the second cam comprises a first surface, a second surface and a third surface. [17] Furniture according to claim 16, wherein the second cam is configured to prevent the movement of the seat assembly between the upright position and the reclined position when the first surface of the second cam comes into contact with the second trailing wheel. [18] Furniture according to claim 16, wherein the second cam is configured to allow movement of the seat assembly between the upright position and the reclined position when the second surface of the second cam comes into contact with the second trailing wheel. [19] Furniture according to claim 15, further comprising a motor which drives the rotation of the drive rod. [20] Furniture according to claim 19, wherein: The motor's operation controls the movement of the seat assembly to achieve intermediate positions between the upright position and the reclined position, and intermediate positions between the nominally tilted position and the fully tilted position; and The activation of the motor controls the movement of the leg support platform to achieve intermediate positions between the stowed position and the extended position. [21] Furniture according to claim 19, further comprising: a rail attached to the motor; and a sled attached to the drive rod. [22] Furniture according to claim 21, wherein: the motor first drives the carriage to slide along the rail, and simultaneously rotates the drive rod; and the motor then drives the rail to slide relative to the carriage, and at the same time rotating the support rod. [23] Furniture according to claim 15, wherein the set of linkages of the tilting linkage mechanism comprises a first linkage connected to the support rod and a second linkage connected to the drive rod. [24] Furniture according to claim 15, wherein the rotation of the first cam causes the first cam to come into contact with the first trailing wheel and simultaneously drives the set of linkages such that the seat assembly moves from the nominally tilted position to the rearward tilted position. [25] Furniture according to claim 15, wherein: the seat assembly is sequenced in such a way that it moves from a first synchronous position to a second synchronous position and from a third synchronous position to a fourth synchronous position; the seat assembly, when the seat assembly moves between the first synchronization position and the fourth synchronization position, moves between the nominally tilted position and the rearward tilted position, and the leg support platform moves between the stowed position and the extended position; and The seat assembly moves between the upright position and the reclined position when the seat assembly moves between the second synchronous position and the fourth synchronous position. [26] Furniture according to claim 15, wherein the seat assembly is rockable between a backward rocking position and a forward rocking position, with the linkages and the wheel support plate rotating simultaneously when the seat assembly moves between the backward rocking position and the forward rocking position; the seat assembly can rock freely between the forward-rocking position and the backward-rocking position when the leg support platform is in the stowed position; and The seat assembly is prevented from rocking between the forward rocking position and the backward rocking position when the leg support platform is in the extended position. [27] Furniture according to claim 26, wherein the seat assembly is in the backward rocking position and is prevented from rocking further backward when the first trailing wheel touches the wheel support plate. [28] Furniture according to claim 26, wherein the seat assembly is in the forward rocking position and is prevented from rocking further forward when the first trailing wheel touches the first cam.

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