MOVABLE SEAT WITH SWINGING DEVICE

Abstract

A seating device with a swinging device is provided. The seating device includes a seat base, a seat, an ottoman, a backrest, and two moving linkages configured to move the seating device from a first position to a second position. Moreover, the seating device includes a swinging device configured to couple between the seat base and the two moving linkages, and drive the two moving linkages to swing relative to the seat base along a front and rear direction. The swinging device includes a swinging actuator; and an eccentric transmitter is configured to transmit a swing actuation torque to the two moving linkages, where the eccentric transmitter includes a crank and a transmission arm, the crank is configured to couple with the swinging actuator, and the transmission arm is configured to couple with the two moving linkage via a universal joint device.

Description

BACKGROUND

Various movable seats, seating devices/units, or seat units are known in the prior art, such as sofas or seats with multi-position transformation functions. As people's living standards improve, the demand for comfort in sofas and chairs has also increased. In known designs, movable seat units typically feature mechanical extension devices, allowing them to transit or switch between sitting positions, TV-watching positions or leisure positions, and reclining positions. When the seat unit transitions from a sitting position to a TV-watching position, the footrest or ottoman extends forward, while the angle between the backrest and the seat remains relatively constant. Additionally, when transitioning from a TV-watching position to a reclining position, the footrest or ottoman extends further forward and upward, and the backrest reclines significantly. Furthermore, such movable seats often include a swinging function, where the mechanical extension device allows the entire seat unit to swing back and forth relative to the base or the ground. The posture transitions and swinging functionality between the sitting, TV-watching, and reclining positions in these seats can be achieved using electrical means.

However, existing seat units often fall short of meeting people's increasing demands for comfort due to the limited swing modes provided by a single rigid plate. Moreover, the disadvantage of the existing seat units is that the front and rear swing range of the seat unit is too small and the swing frequency is too fast, so that the user usually cannot obtain a satisfactory comfort experience and may even feel dizzy. In addition, the connection method between the swinging structure or device used to swing the seat unit back and forth and other components of the seat unit is not reasonable, causing excessive wear of the components of the swinging structure and affecting its service life.

BRIEF SUMMARY

The present disclosure provides examples of techniques relating to improving a seating unit or device with an electrical swinging device or structure, and a method for operating the seating unit or device.

According to a first aspect of the present disclosure, there is provided a seating device including a seat base, a seat located above the seat base, an ottoman, a backrest located above the seat base, two moving linkages configured to move the seating device from a first position to a second position. The seating device is capable of being in multiple positions comprising the first position and the second position, the two moving linkages are mirror-symmetric and parallel to each other. Furthermore, each moving linkage may include a seating bracket, a backrest assembly, a leg extension, and a transmission connecting rod, where the backrest assembly is pivotally connected to the rear of the seating bracket, the leg extension is pivotally connected to the front of the seating bracket, and the transmission connecting rod is fixedly connected to the seating bracket. The seat is attached to the seating bracket, the backrest is attached to the backrest assembly, and the ottoman is attached to the leg extension.

Moreover, the seating device further includes a swinging device configured to couple between the seat base and the two moving linkages, and to drive the two moving linkages to swing relative to the seat base along a front and rear direction. The swinging device may include a swinging actuator and an eccentric transmitter that is configured to transmit a swing actuation torque to the two moving linkages. The eccentric transmitter may include a crank and a transmission arm, where the crank is configured to couple with the swinging actuator, and the transmission arm is configured to couple with the two moving linkage via a universal joint device.

According to a second aspect of the present disclosure, there is provided a swinging device, including a swinging actuator and an eccentric transmitter that is configured to transmit a swing actuation torque to two moving linkages of a seating device, where the eccentric transmitter includes a crank and a transmission arm, the crank is configured to couple with the swinging actuator, and the transmission arm is configured to couple with the two moving linkage via a universal joint device.

Furthermore, the swinging device is configured to couple between the seat base of the seating device and the two moving linkages, and the swinging device drives the two moving linkages to swing relative to the seat base along a front and rear direction.

Moreover, the seating device includes the seat base, a seat located above the seat base, an ottoman, a backrest located above the seat base, and the two moving linkages. The two moving linkages are configured to move the seating unit from a first position to a second position, where the seating unit is capable of being in multiple positions comprising the first position and the second position, the two moving linkages are mirror-symmetric and parallel to each other. Each moving linkage may include a seating bracket, a backrest assembly, a leg extension, and a transmission connecting rod, where the backrest assembly is pivotally connected to the rear of the seating bracket, the leg extension is pivotally connected to the front of the seating bracket, and the transmission connecting rod is fixedly connected to the seating bracket, the seat is attached to the seating bracket, the backrest is attached to the backrest assembly, and the ottoman is attached to the leg extension.

It is to be understood that both the foregoing general description and the following detailed description are examples only and are not restrictive of the present disclosure.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate examples consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

FIG. 1 illustrates a perspective view of a movable seating unit or device according to some examples of the present disclosure.

FIG. 2 illustrates another perspective view of the movable seating unit or device shown in FIG. 1.

FIG. 3 illustrates another perspective view of the movable seating unit or device shown in FIG. 1.

FIG. 4 illustrates a partial perspective view of a swinging structure or device according to examples of the present disclosure.

FIG. 5 illustrates a partial side view of the swinging structure or device as shown in FIG. 4.

FIG. 6 illustrates a side view of the seating unit or device as shown in FIG. 1, which is in a neutral position where no swinging has occurred.

FIG. 7 illustrates a side view of the seating unit or device as shown in FIG. 6, which is in a first swinging posture.

FIG. 8 illustrates a side view of the seating unit or device as shown in FIG. 6, which is in a second swinging posture.

FIG. 9 illustrates a perspective view of a movable seating unit or device according to some other examples of the present disclosure.

FIG. 10 illustrates a partial perspective view of a movable seating unit or device according to some other examples of the present disclosure.

FIG. 11 illustrates a side view of the seating unit or device as shown in FIG. 10.

FIG. 12 illustrates a perspective view of a movable seating unit or device according to some examples of the present application.

FIG. 13 illustrates another perspective view of the movable seating unit or device as shown in FIG. 12.

FIG. 14 illustrates a perspective view of an electrical swinging device according to some other examples of the present disclosure.

FIG. 15 illustrates a top view of the electrical swinging device as shown in FIG. 14.

FIG. 16 illustrates a flowchart of a method according to some examples of the present disclosure.

FIG. 17 illustrates a flowchart of a method according to some other examples of the present disclosure.

FIG. 18 illustrates a sofa in a sitting position according to some other examples of the present disclosure.

FIG. 19 illustrates a sofa in a reclining position according to some other examples of the present disclosure.

DETAILED DESCRIPTION

Reference will now be made in detail to specific implementations, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous non-limiting specific details are set forth in order to assist in understanding the subject matter presented herein. But various alternatives may be used without departing from the scope of claims and the subject matter may be practiced without these specific details. For example, the subject matter presented herein can be implemented on many types of electronic devices with digital video capabilities.

Reference throughout this specification to “one embodiment,” “an embodiment,” “an example,” “some embodiments,” “some examples,” or similar language means that a particular feature, structure, or characteristic described is included in at least one embodiment or example. Features, structures, elements, or characteristics described in connection with one or some embodiments are also applicable to other embodiments, unless expressly specified otherwise.

In the present disclosure, it should be understood that terms such as “up,” “down,” “left,” “right,” “top,” “bottom,” “front,” “rear,” etc., indicating directions or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. These terms are used for case of description and simplification, and do not imply that the indicated devices or components must have specific orientations or be constructed and operated in specific orientations. Therefore, they should not be construed as limitations to the present disclosure. Additionally, the terms “front-rear direction,” “front-rear direction of the seating unit or device,” “front and rear direction” refer to the direction of the backrest and ottoman relative to the seating part. Specifically, “rear” indicates the direction toward the backrest, while “front” indicates the direction toward the ottoman.

It should be illustrated that the terms “first,” “second,” and the like used in the description, claims of the present disclosure, and the accompanying drawings are used to distinguish objects, and not used to describe any specific order or sequence. It should be understood that the data used in this way may be interchanged under an appropriate condition, such that the embodiments of the present disclosure described herein may be implemented in orders besides those shown in the accompanying drawings or described in the present disclosure.

The present disclosure provides a seating device or seating unit with optimized structure and enhanced comfort.

FIG. 1 to FIG. 8 illustrate an exemplary movable seating device or seating unit based on some examples of the present disclosure. The seating device (100) includes the following components: a seat base (1), a swinging device (2) and moving linkages (3). The swinging device (2) is a swinging structure as shown in FIG. 1. In these examples, the swinging device (2) is positioned between the seat base (1) and the moving linkages (3), and the moving linkages (3) is swingably supported or positioned above the seat base (1) by means of the swinging device (2). The seating device (100) also includes a seat attached to the moving linkages (3), a backrest located behind the seat, and an ottoman located in front of the seat. The swinging device (2) enables the moving linkages (3) to swing back and forth relative to the seat base (1). As shown in FIGS. 18 and 19, the sofa 1800 includes a seat 1801, an ottoman 1802, and a backrest 1803. The sofa 1800 in FIGS. 18 and 19 is in different positions. The sofa 1800 may further include the movable seating device or seating unit illustrated in FIG. 1 to FIG. 8.

The seat base (1) may include a rotating base directly supported or positioned on the ground and a fixed base that can rotate and is supported or positioned above the rotating base. The rotating base may include a circular base (11) and a rotating support (12) connected to it. The fixed base may include two parallel base longitudinal beam (13) and a base cross beam (14) connecting between the two parallel base longitudinal beams (13). The circular base (11) is supported or positioned on the ground with its bottom, and the fixed base is fixedly installed on the rotating support (12), so that the fixed base can rotate relative to the ground.

As showing in FIG. 1, the seating device (100) has two moving linkages (3) that are mirror-symmetric and parallel to each other. Further, each linkage structure is a multi-link mechanism that enables the seating device to switch between a seating position and a reclining position. However, the present disclosure is not limited to switching between a seating position and a reclining position, and in other examples not shown, the seating device may also switch between any two positions from a seating position, a TV position, or a reclining position, or the seating device may switch between a seating position and a TV position. For clarity, one of the two moving linkages (3) is omitted in FIG. 2 and FIG. 3. A person skilled in the art would understand that the omitted side of two moving linkages (3) is in the same manner of the side shown in FIG. 2 or FIG. 3.

Each moving linkage (3) may further include a seating assembly (31), a backrest assembly (32) and a leg extension (33). By means of a linkage actuator (4), the moving linkages (3) can switch between any two positions from a sitting position, a TV position or a reclining position through movement of the backrest assembly (32) and the leg extension (33) relative to the seating assembly (31).

In the example, the seating assembly (31) may further include a seating bracket (311) and a transmission connecting rod (312) that is fixedly connected to the seating bracket (311). A front end of the transmission connecting rod (312) is fixedly connected to the seating bracket (311), and the transmission connecting rod (312) extends first rearward and downward from its front end, then extends substantially horizontally rearward. A fixed support rod (313) having an inclined orientation is also fixedly connected between a rear end of the transmission connecting rod (312) and the seating bracket (311), thereby forming a stable and solid frame structure through the seating bracket 311, the transmission connecting rod 312, and the fixed support rod (313).

In some examples, the backrest assembly (32) may include a backrest bracket (321), a backrest connector (322), and a rear connector (323). The backrest bracket (321) has a generally L-shaped structure with a horizontal section and a vertical section, where the horizontal section extends substantially horizontally and the vertical section extends substantially vertically in the seating position. A front end of the backrest bracket (321) is pivotally connected to the rear portion of the seating bracket (311), and a rear end of the backrest bracket (321) is pivotally connected to the rear connector (323) via the backrest connector (322). The backrest connector (322) may have a crank lever, a first end of the backrest connector (322) is pivotally connected to the rear end of the backrest bracket (321), and a second end of the backrest connector (322) is pivotally connected to an upper end of the rear connector (323), a lower end of the rear connector (323) is pivotally connected to the rear end of the transmission connecting rod (312).

In some examples, the leg extension (33) may include a first leg link (331), a second leg link (332), an ottoman support plate (333), and a plurality of links pivotally connected between them. A rear end of the first leg link (331) and a rear end of the second leg link (332) may be respectively pivotably connected to the seating bracket (311).

In some examples, a linkage connecting rod (314) may be placed between the backrest assembly (32) and the leg extension (33), where one end of the transmission connecting rod (312) is pivotally connected to the second leg link (332), and the other end is pivotally connected to a third end of the backrest connector (322).

In some examples, the seating device may include a linkage actuator (4) which allows the seating device to transit or switch between any two positions from the seating position, the TV position, or the reclining position. To install the linkage actuator (4), a front crossbar 34 is fixedly connected between the leg extensions 33, for example, between the first leg links 331 as shown in FIG. 2. A seating crossbar 35 is fixedly connected between the seating brackets 311 by means of fixed tabs 315. The linkage actuator (4) may be a linear motor unit which includes a motor head (41), a motor slider rail (42) connected to the motor head (41), and a motor slider (43). The motor head (41) is pivotally connected to a front crossbar (34), and the motor slider (43) is pivotally connected to the seating crossbar (35). When the motor head (41) moves longitudinally back and forth along the motor slide rail (42) relative to the motor slider (43), the front crossbar (34) drives the leg extension (33) to extend forward or retract backward through the first leg link (331). Further, the linkage connecting rod (314) drives the backrest connector (322) to rotate, thus causing the backrest bracket (321) to tilt backward or forward around its pivot point with the seating bracket (311). Thus, the seating device can switch between a seating position and a reclining position.

According to FIGS. 1 to 8, the swinging device (2) includes a swinging base plate (21), a front swinging rod (22), a rear swinging rod (23), a swinging actuator (25), and an eccentric transmitter (26). In some examples, the swinging device (2) may further include a front swinging rod cross beam (24) connected between the front swinging rods (22).

The swinging base plate (21) is fixed via its bottom surface to the fixed base of the seat base (1). The swinging base plate (21) has a top part. The front end of the top part of the swinging base plate (21) is pivotally connected to the upper end of the front swinging rod (22), and the rear end of the top part of the swinging base plate (21) is pivotally connected to the upper end of the rear swinging rod (23). The lower end of front swinging rod (22) and the lower end of the rear swinging rod (23) are respectively pivotally connected to longitudinally extending transmission connecting rod (312), so that the transmission connecting rod (312), along with the moving linkages (3) which are fixedly connected to the transmission connecting rod (312), is “suspendedly” coupled to the swinging base plate (21).

In some examples, the swinging actuation mechanism (25) may include a swinging electric drive (251) and a drive bracket (252) that fixedly connects the swinging electric drive (251) relative to the fixed base. In these examples, the swinging electric drive (251) may be designed as a belt-driven motor, but it may also be designed as other types of motors.

In some examples, the eccentric transmitter (26) may include a crank (261) coupled to the swinging electric drive (251), a transmission arm (262), and a mounting base (263) coupled to the moving linkages (3). As shown in FIGS. 4-5, the crank (261) is torsionally fixedly coupled at its crank proximal end 2611 to the output shaft of the swinging electric drive (251), so that the crank (261) is capable of rotating at the rotational point (2611a) under the drive of the swinging electric drive (251). The crank distal end (2612) of the crank (261) is pivotally connected to the transmission arm proximal end (2621) of the transmission arm (262). At the transmission arm distal end of the transmission arm (262), which is opposite to the transmission arm proximal end (2621), a transmission arm ball joint (2622) is constructed to forms a universal joint device together with a ball head receiving portion constructed in the mounting base (263) in a shape that fits together.

In these examples, a rear crossbar (36) may be further installed for mounting the swinging device (2). The rear crossbar is fixed at its ends between the lower parts of the rear connector (323), and the mounting base (263) is fixedly connected to this rear crossbar (36). Correspondingly, the shape of the transmission arm ball joint (2622) fits into the ball head receiving portion of the mounting base (263), allowing the transmission arm ball joint (2622) to rotate at the transmission action point (2622a).

Furthermore, the swinging electric drive (251) enables the crank (261) to rotate at the rotation point (2611a). Due to the eccentric arrangement of the pivot point between the crank distal end (2612) and the transmission arm proximal end (2621) relative to the rotational point (2611a), the distance between the rotational point (2611a) and the transmission action point (2622a) changes as the crank (261) rotates. Consequently, the eccentric transmitter (26) can transmit the swing actuation torque generated by the swinging electric drive (251) to the rear connector (323) of the moving linkages (3). The rear connector (323) tends to swing back and forth under the influence of the swing actuation torque, where the moving linkages (3) swing back and forth through the swinging of the front swinging rod (22) and the rear swinging rod (23).

As shown in FIGS. 6 to 8, when the seating device is in the neutral position as shown in FIG. 6, the seating device has not yet swung. When the swinging electric drive (251) rotates to the point where the distance between the rotational point (2611a) and the transmission action point (2622a) is at its maximum, as shown in FIG. 7, the seating device reaches a first swinging posture, i.e., the rear swing limit position where the seating device swings back to its limit. When the crank (261) continues to rotate to the point where the distance between the rotational point (2611a) and the transmission action point (2622a) is at its minimum, as shown in FIG. 8, the seating device reaches a second swinging posture, i.e., the front swing limit position where the seating device swings forth to its limit. This allows the seating device to alternately switch back and forth between the first swinging posture and the second swinging posture.

FIG. 9 illustrates some other examples according to the present disclosure. In these examples, the seat base (1) may include two base cross beam (13) extending parallel to the front and rear direction of the seating device and a base longitudinal beam (14) connected between the two base cross beams (13). The two base cross beams (13) and the base longitudinal beam (14) constitute a fixed base directly placed on the ground.

FIGS. 10 and 11 schematically illustrate some other examples according to the present disclosure. The seating device includes the seat base (1), the swinging device (2), and the moving linkages (3). For clarity, one of the two moving linkages (3) is omitted in FIG. 10.

The seat base (1) may include two base cross beam (13) extending parallel to the front and rear direction of the seating device and a base longitudinal beam (14) connected between the two base cross beams (13). The two base cross beams (13) and the base longitudinal beam (14) constitute a fixed base directly placed on the ground. The swinging device (2) is coupled between the seat base (1) and the two moving linkages (3). The swinging device (2) may have a different structure.

As shown in FIGS. 10 and 11, the swinging device (2) includes a swinging base (27), the top surface of which is fixedly connected to the swinging mounting plate (37) of the moving linkages (3). The bottom surface of the swinging base (27) is arc-shaped and can swing on the top surface of the base cross beam (13) of the fixed base. The swinging mounting plate (37) is fixedly connected to the transmission connecting rod (312), which enables that the moving linkages (3) is swingably mounted on the fixed base relative to the seat base (1).

Similarly, the swinging device (2) may also include the swinging actuator (25) and the eccentric transmitter (26), which are not illustrated in FIGS. 10 and 11. The swinging actuator (25) includes the swinging electric drive (251) and the drive bracket (252). The eccentric transmitter (26) includes the crank that is coupled with the swinging electric drive (251), the transmission arm (261), and the mounting base (263) that is coupled to the moving linkages (3). The crank (261) is torsionally fixedly coupled at its crank proximal end 2611 to the output shaft of the swinging electric drive (251), so that the crank (261) is capable of rotating at the rotational point (2611a) under the drive of the swinging electric drive (251). The crank distal end (2612) of the crank (261) is pivotally connected to the transmission arm proximal end (2621) of the transmission arm (262). At the transmission arm distal end of the transmission arm (262), which is opposite to the transmission arm proximal end (2621), a transmission arm ball joint (2622) is constructed to forms a universal joint device together with a ball head receiving portion constructed in the mounting base (263) in a shape that fits together.

In these examples, a swinging crossbar (38) may further be installed for mounting the swinging device (2). Two ends of the swinging crossbar (38) is fixedly connected between the swinging mounting plates (37). The swinging electric drive (251), not shown in FIGS. 10-11, is fixedly mounted on the fixed base via an actuating bracket, and the mounting base (263), which is not shown, is fixedly connected to the swinging crossbar (38). Correspondingly, the transmission arm ball joint (2622) is shape-fitted into the ball head receiving portion of the mounting base (263) and rotates around the transmission action point (2622a).

Furthermore, the swinging electric drive (251) enables the crank (261) to rotate at the rotation point (2611a). Due to the eccentric arrangement of the pivot point between the crank distal end (2612) and the transmission arm proximal end (2621) relative to the rotational point (2611a), the distance between the rotational point (2611a) and the transmission action point (2622a) changes as the crank (261) rotates. Consequently, the eccentric transmitter (26) can transmit the swing actuation torque generated by the swinging electric drive (251) to the rear connector (323) of the moving linkages (3). The rear connector (323) tends to swing back and forth under the influence of the swing actuation torque, where the moving linkages (3) swing back and forth through the swinging of the front swinging rod (22) and the rear swinging rod (23). When the swinging electric drive (251) rotates to the point where the distance between the rotational point point (2611a) and the transmission action point (2622a) is at its maximum, the seating device reaches the first swinging posture, i.e., the rear swing limit position where the seating device swings back to its limit. When the crank (261) continues to rotate to the point where the distance between the rotational point (2611a) and the transmission action point (2622a) is at its minimum, the seating device reaches the second swinging posture, i.e., the front swing limit position where the seating device swings forth to its limit. This allows the seating device to alternately switch back and forth between the first swinging posture and the second swinging posture.

In some examples, a damping device (28) is further provided between the swinging crossbar (38) and the base cross beam (14). In these examples, the damping device (28) may be designed as a spring component or assembly to cushion excessive vibrations caused by the back-and-forth swinging of the moving linkages (3), thereby enhancing user comfort.

FIG. 12 illustrates a perspective view of a movable seating unit or device according to some examples of the present application. The movable seating device (100) includes a seat base (1) and moving linkages (3) that are positioned above the ground through the seat base (1). Each moving linkage (3) is a multi-link mechanism. Each moving linkage may include a seating bracket (311) for attaching a seat, a backrest bracket (321), and a leg extension (33) for attaching an ottoman. The backrest bracket (321) is pivotally connected the rear part of the moving linkage (3), and the leg extension (33) is movably connected to the front part of the moving linkage (3). For simplicity, the seat, the backrest, and the ottoman are not shown in FIG. 12. The moving linkages (33) allow the backrest bracket (321) to pivot and tilt relative to the seating bracket (311) and enables the leg extension (33) to extend and retract, thereby achieving the transition of the seating device between any two positions from the seating position, the TV position, and the reclining position.

However, the present disclosure is not limited to switching between a seating position and a reclining position. In other examples not shown, the seating device may also switch between a seating position and a reclining position, or the seating device may switch between a seating position and a TV position.

As shown in FIG. 12, the moving linkages (3) are mirror-symmetric and parallel to each other. The moving linkages (3) are connected by a rear crossbar (36) so as to achieve synchronous movement of both the moving linkages (3) and the rear crossbar (36).

The seating device shown in FIG. 12 may include a first electric drive 123 for achieving the positional posture transformation of the seating device, which includes a linear actuator. The positional posture transformation of the seating device between the seating position and/or the TV position and/or the reclining position is achieved through the extension and retraction of the linear actuator. However, in the examples not shown, the positional posture transformation of the seating device between the seating position and/or the TV position and/or the reclining position can also be achieved manually.

Additionally, the seating device may operate in a swinging mode, in which the moving linkages of the seating device, along with the seat, the backrest, and the ottoman, swing back and forth relative to the ground. For this purpose, the seating device may further include a swinging device 2 that is electrical.

For clarity, one of the two moving linkages is omitted in FIG. 13. The swinging device 2 includes a drive housing 40 fixedly connected to the seat base (1), a drive assembly 1341 at least partially arranged within the drive housing 40, a transmission assembly 1342, and an eccentric transmitter 26 that is movable relative to the drive housing 40.

FIG. 14 illustrates a perspective view of the swinging device 2. The drive assembly 1341 includes a motor head 41 and a drive worm 411 that is rotationally driven by the motor head 410.

Furthermore, the transmission assembly 1342 includes a first transmission stage and a second transmission stage. The first transmission stage includes a worm gear 421, which cooperates with the drive worm 411 to achieve the first stage of speed reduction transmission. The second transmission stage is configured as an auxiliary speed reduction mechanism. In the example shown in FIG. 14, the auxiliary speed reduction mechanism includes a first pulley 422 and second pulley 423 that cooperate with each other, with a drive belt 424 between the first pulley 422 and the second pulley 423. The first pulley 422 is coaxially arranged with and torsionally connected to the worm gear 421, and is rotatably arranged in the drive housing 40 via bearings, allowing the first pulley 422 to rotate together with the worm gear 421 at the same angular velocity. A fixed drive shaft 425 passes through the center of the second pulley 423 and is arranged parallel to the rotational axis of the first pulley 422. The second pulley 423 is rotatably arranged in the drive housing 40 via the fixed drive shaft 425 and its bearings. The diameter of the first pulley 422 is smaller than that of the second pulley 423, thereby achieving the second stage of speed reduction transmission

However, in the examples not shown, the auxiliary speed reduction mechanism may also include cooperating drive gears. In the example shown in FIG. 14, the eccentric transmitter (26) includes a crank (261) coupled to the fixed drive shaft (425), a transmission arm (262) coupled to the crank (261), and a mounting base (263) coupled to the moving linkage (3).

As shown in FIG. 15, the crank (261) and the transmission arm (262) form an eccentric drive assembly. The second pulley 423 rotates around its rotational axis x via the fixed drive shaft 425; one end of the crank (261) is torsionally fixed to the fixed drive shaft 425, and the other end is pivotally connected to the transmission arm (262) around the eccentric axis y. This configuration converts the rotational torque output from the fixed drive shaft 425 into a reciprocating linear torque, which in turn causes the seating device to swing back and forth via the mounting base (263). In this example, the mounting base (263) is fixedly connected to the rear crossbeam (36). However, in the examples not shown, the mounting base (263) can also be connected to other components of the moving linkages (3).

The seating device may further include a control device, which can control the swinging device, enabling the seating device to operate in a swinging mode. The method for operating the seating device is explained below with reference to FIGS. 16-17.

FIG. 16 shows one method according to the present disclosure. In this method, the first step S1 is to turn on the power supply of the seating device. In the second step S2, the user operates to activate the swinging device 2 to switch the seating device to the swinging operation mode. Subsequently, in the third step S3, the seating device operates in swinging mode. In this swinging operation mode, the seating device sequentially performs multiple swinging phases p within a total swinging duration T. During each of these swinging phases p, the seating device swings with a corresponding swinging speed v for a corresponding swinging time t, where the swinging speeds v of two consecutive swinging phases p are different. In some examples, three swinging phases are set, namely the first swinging phase p1, the second swinging phase p2, and the third swinging phase p3. In the first swinging phase p1, the seating device swings at a first swinging speed v1 for a first swinging time t1, where t1 is 5 minutes; in the second swinging phase p2, the seating device swings at a second swinging speed v2 for a second swinging time t2, where t2 is 15 minutes; in the third swinging phase p3, the seating device swings at a third swinging speed v3 for a third swinging time t3, where t3 is 15 minutes. The first swinging speed v1 is higher than the second swinging speed v2, and the second swinging speed v2 is higher than the third swinging speed v3. That is, within the total swinging duration T, the swinging speed gradually decreases.

In some examples, the first swinging phase p1, the second swinging phase p2, and the third swinging phase p3 may be performed sequentially only once, i.e., the total swinging duration T is set to the sum of the first time t1, the second time t2, and the third time t3. Alternatively, each swinging phase may also be performed sequentially in cycles. That is, the total swinging duration T is set to a multiple of the sum of the first time t1, the second time t2, and the third time t3.

When the third step S3 continues until the total swinging duration T is reached, that is, after the completion of all swinging phases, the control device automatically turns off the swinging device 2 in the fourth step S4, ending the operation of the swinging mode.

In some other examples, during the third step S3, that is, before the total swinging duration T has ended, the swinging speed v and/or swinging time t can be manually adjusted according to the user's preference, and then the seating device continues to operate with the adjusted swinging speed and time. For example, when the seating device is operating in the second swinging phase p2 at the second swinging speed v2 in the swinging mode, the user can manually adjust the swinging speed to the first swinging speed v1 and the swinging time to the third swinging time t3 through manual input, such as using a hand controller. Thus, the seating device continues to operate at a faster swinging speed for 15 minutes, then ends the swinging mode.

In some other examples, during the third step S3, that is, before the total swinging duration T has ended, the swinging speed v and swinging time t can be automatically adjusted based on the user's biological data, and then the seating device continues to operate with the adjusted swinging speed and time. For example, when the seating device is operating in the first swinging phase p1 at the first swinging speed v1 in the swinging mode, the control device detects the user's biological data, such as the current heart rate and breathing rate. If the heart rate and/or breathing rate decrease below a specified first threshold, the control device automatically adjusts the swinging speed to the third swinging speed v3 and the swinging time to the third swinging time t3. Thus, the seating device continues to operate at a slower swinging speed for 15 minutes, then ends the swinging mode. Alternatively, if the heart rate and/or breathing rate decrease below a specified second threshold, which is lower than the first threshold, the control device automatically turns off the swinging device 2, thereby ending the swinging mode early. For this purpose, the control device includes a detection module for detecting biological data.

In some examples, during the third step S3, that is, before the total swinging duration T has ended, the swinging operation can be paused or terminated based on the user's manual operation.

FIG. 17 shows another method according to the present disclosure, which is essentially similar to the method shown in FIG. 16, with the difference that after the power supply of the seating device is turned on in the first step S1, a determination step S0 is carried out before the swinging device 2 is activated in the second step S2. In the determination step S0, the current posture position of the seating device is detected, and based on the detection result, it is determined whether the second step S2 is allowed. If the seating device is currently in the reclining position, the swinging device 2 is allowed to be activated in the second step S2; if the seating device is not in the reclining position, the swinging device 2 is not allowed to be activated in the second step S2. In other words, in the method as shown in FIG. 17, the seating device being in the reclining position is a prerequisite for allowing the seat unit to operate in the swinging mode.

Other implementation solutions of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following the general principles thereof and including such departures from the disclosure as come within known or customary practice in the art. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be appreciated that the disclosure is not limited to the exact construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. It is intended that the scope of the disclosure only be limited by the appended claims.

Claims

1. A seating device, comprising: a seat base;a seat located above the seat base;an ottoman;a backrest located above the seat base;two moving linkages configured to move the seating device from a first position to a second position, wherein the seating device is capable of being in multiple positions comprising the first position and the second position, wherein the two moving linkages are mirror-symmetric and parallel to each other, wherein each moving linkage comprises a seating bracket, a backrest assembly, a leg extension, and a transmission connecting rod, wherein the backrest assembly is pivotally connected to the rear of the seating bracket, the leg extension is pivotally connected to the front of the seating bracket, and the transmission connecting rod is fixedly connected to the seating bracket, the seat is attached to the seating bracket, the backrest is attached to the backrest assembly, and the ottoman is attached to the leg extension; anda swinging device configured to couple between the seat base and the two moving linkages, and drive the two moving linkages to swing relative to the seat base along a front and rear direction, wherein the swinging device comprises:a swinging actuator; andan eccentric transmitter is configured to transmit a swing actuation torque to the two moving linkages, wherein the eccentric transmitter comprises a crank and a transmission arm, wherein the crank is configured to couple with the swinging actuator, and wherein the transmission arm is configured to couple with the two moving linkage via a universal joint device.

2. The seating device of claim 1, wherein the transmission arm is coupling with a crossbar that is directly or indirectly connected to the two moving linkages.

3. The seating device of claim 2, wherein the universal joint device comprises a transmission arm ball joint and a ball head receiving portion, the transmission arm ball joint is located at a first end of the transmission arm, the ball head receiving portion is located within a mounting base, the mounting base is coupled with the two moving linkages via the crossbar, and the transmission arm ball joint is configured to rotate in the ball head receiving portion at a transmission action point.

4. The seating device of claim 3, wherein the crank is coupling with the swinging actuator at a rotational point, and the crank is configured to rotate at the rotational point, and wherein the transmission arm is coupling with the two moving linkages at the transmission action point.

5. The seating device of claim 4, wherein the swinging device is configured to drive the seating device to alternately switch between a first swinging posture and a second swinging posture; wherein in the first swinging posture, a distance between the rotational point and the transmission action point reaches the maximum; andwherein in the second swinging posture, the distance between the rotational point and the transmission action point reaches the minimum.

6. The seating device of claim 1, wherein the swinging device further comprises a swinging base plate, a front swinging rod, and a rear swinging rod, the swinging base plate is fixedly connected to the seat base, the front swinging rod and the rear swinging rod are pivotally connected between the swinging base plate and the two moving linkages; and wherein the front swinging rod is configured to pivotally connected to a front end of the swinging base plate at an upper end of the front swinging rod, the rear swinging rod is configured to pivotally connected to a rear end of the swinging base plate at an upper end of the rear swinging rod, and a lower end of the front swinging rod and a lower end of the rear swinging rod are respectively pivotally connected to the transmission connecting rod.

7. The seating device of claim 2, wherein the crossbar is a rear crossbar, and two ends of the rear crossbar are respectively fixedly connected to the backrest assembly.

8. The seating device of claim 7, wherein the backrest assembly comprises a backrest bracket, a backrest connector, and a rear connector, a front end of the backrest bracket is pivotally connected to the rear of the seating bracket, a rear end of the backrest bracket is pivotally connected to an upper end of the rear connector via the backrest connector, a lower end of the rear connector is pivotally connected to the transmission connecting rod; and wherein the two ends of the rear crossbar are respectively fixedly connected to the rear connector.

9. The seating device of claim 1, wherein the swinging device further comprises a swinging base, each moving linkage comprises a swinging mounting plate, a top surface of the swinging base is fixedly connected to the swinging mounting plate, a bottom surface of the swinging base is arc-shaped and is configured to swing on the seat base, and wherein the swinging mounting plate is fixedly connected to the transmission connecting rod.

10. The seating device of claim 9, wherein the crossbar is a swinging crossbar, two ends of the swinging crossbar are respectively fixedly connected to the swinging mounting plate, and wherein the eccentric transmitter transmits the swing actuation torque to the swinging crossbar so that the swinging mounting plate swings back and forth on the seat base through the bottom surface of the swinging base that is arc-shaped.

11. The seating device of claim 10, wherein the seat base comprises two base longitudinal beams extending parallel to each other, and the seat base further comprises a base cross beam that is transversely connected between the two base longitudinal beams.

12. The seating device of claim 11, wherein the seat base comprises a fixed base and a rotating base, the fixed base is rotatably connected above the rotating base, and the rotating base is directly located on the ground.

13. The seating device of claim 1, wherein the first position is one position of a seating position, a TV position, or a reclining position, and the second position is another position of the seating position, the TV position, or the reclining position; wherein in the sitting position, the ottoman is located under the seat;wherein in the TV position, the ottoman is located in front of the seat, and an angle between the seat and the backrest is substantially the same as in the sitting position; andwherein in the reclining position, the angle between the seat and the backrest is greater than the angle in the TV position.

14. The seating device of claim 13, wherein the seating device further comprises a linkage actuator configured to drive the two moving linkages so that the seating device switches between the first position and the second position.

15. A swinging device, comprising: a swinging actuator; andan eccentric transmitter is configured to transmit a swing actuation torque to two moving linkages of a seating device, wherein the eccentric transmitter comprises a crank and a transmission arm, the crank is configured to couple with the swinging actuator, and the transmission arm is configured to couple with the two moving linkage via a universal joint device,wherein the swinging device is configured to couple between the a seat base of the seating device and the two moving linkages, and the swinging device drives the two moving linkages to swing relative to the seat base along a front and rear direction,wherein the seating device comprises the seat base, a seat located above the seat base, an ottoman, a backrest located above the seat base, and the two moving linkages, andwherein the two moving linkages configured to move the seating unit from a first position to a second position, wherein the seating unit is capable of being in multiple positions comprising the first position and the second position, wherein the two moving linkages are mirror-symmetric and parallel to each other, wherein each moving linkage comprises a seating bracket, a backrest assembly, a leg extension, and a transmission connecting rod, wherein the backrest assembly is pivotally connected to the rear of the seating bracket, the leg extension is pivotally connected to the front of the seating bracket, and the transmission connecting rod is fixedly connected to the seating bracket, the seat is attached to the seating bracket, the backrest is attached to the backrest assembly, and the ottoman is attached to the leg extension.

16. The swinging device of claim 15, wherein the transmission arm is coupling with a crossbar that is directly or indirectly connected to the two moving linkages.

17. The swinging device of claim 16, wherein the universal joint device comprises a transmission arm ball joint and a ball head receiving portion, the transmission arm ball joint is located at a first end of the transmission arm, the ball head receiving portion is located within a mounting base, the mounting base is coupled with the two moving linkages via the crossbar, and the transmission arm ball joint is configured to rotate in the ball head receiving portion at a transmission action point.

18. The swinging device of claim 17, wherein the crank is coupling with the swinging actuator at a rotational point, and the crank is configured to rotate at the rotational point, and wherein the transmission arm is coupling with the two moving linkages at the transmission action point.

19. The swinging device of claim 18, wherein the swinging device is configured to drive the seating device to alternately switch between a first swinging posture and a second swinging posture; wherein in the first swinging posture, a distance between the rotational point and the transmission action point reaches the maximum; andwherein in the second swinging posture, the distance between the rotational point and the transmission action point reaches the minimum.

20. The swinging device of claim 15, wherein the swinging device further comprises a swinging base plate, a front swinging rod and a rear swinging rod, the swinging base plate is fixedly connected to the seat base, the front swinging rod and the rear swinging rod are pivotally connected between the swinging base plate and the two moving linkages; and wherein the front swinging rod is configured to pivotally connected to a front end of the swinging base plate at an upper end of the front swinging rod, the rear swinging rod is configured to pivotally connected to a rear end of the swinging base plate at an upper end of the rear swinging rod, and a lower end of the front swinging rod and a lower end of the rear swinging rod are respectively pivotally connected to the transmission connecting rod.