HK1236358B - Furniture member with powered mechanism providing lift and zero gravity positions - Google Patents

Description

Furniture component having a powered mechanism providing lift and zero gravity positions

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Patent Application No. 14/475,063, filed on September 2, 2014. The entire disclosure of the above application is incorporated herein by reference.

Technical Field

The present invention relates to furniture components having a powered mechanism that provides both elevation and a zero-gravity user position.

Background Art

This section provides background information for the present invention which is not necessarily prior art.

Furniture components, such as recliners, sofas, loveseats, and ottomans, typically feature a body support structure that allows the user to lean forward from a sitting or seated operating position to a raised position, thereby lifting the user of the furniture component to a raised position approximately equivalent to a standing position. This power-driven lifting mechanism assists users who may not be able to stand up from the furniture's normal sitting position. Existing mechanisms capable of this lifting motion do not simultaneously allow the user to lean back to a zero-gravity position while maintaining clearance from the wall at all backrest positions.

Summary of the Invention

This section is a summary of the present invention, and is not a comprehensive disclosure of all contents and features of the present invention.

According to several aspects, a furniture component power mechanism for providing lift and zero-gravity operating positions includes a first torque tube. A first link and a second link are secured to the first torque tube. The first link is rotatably connected to a first connecting arm, and the second link is rotatably connected to a second connecting arm. The first and second connecting arms are rotatably connected to a gear housing. Operation of a positioning motor coupled to the gear housing slidably moves a sliding member coupled to the gear housing. Movement of the sliding member moves the first and second connecting arms, thereby displacing and rotating the first torque tube. A first connecting plate and a second connecting plate are rotatably connected to the sliding member. Opposite ends of the second torque tube are secured to a first armrest portion and a second armrest portion of a base portion of the furniture component, respectively. The first and second connecting plates are also connected to the second torque tube such that displacement of the sliding member causes the base component to rotate.

According to several aspects, a furniture component power mechanism for providing lift and zero-gravity operating positions includes a first torque tube. A first link and a second link are secured to the first torque tube. The first link is rotatably connected to a first connecting arm, and the second link is rotatably connected to a second connecting arm. The first and second connecting arms are rotatably connected to a gear housing. A positioning motor is coupled to the gear housing. Operation of the positioning motor slidably moves a sliding member slidably coupled to the gear housing. The sliding movement of the sliding member is used to move the first and second connecting arms, thereby moving and rotating the first torque tube. Displacement of the first torque tube causes a base portion of the furniture component to rotate, and rotation of the first torque tube causes a backrest component coupled to the base portion to rotate. A drive motor is coupled to a first and second telescopic linkage groups connected to a leg rest assembly. The first and second telescopic linkage groups and the leg rest assembly can be moved between a retracted or fully extended position solely by operation of the drive motor.

According to a further aspect, a furniture component power mechanism that provides lift and zero-gravity operating positions includes a gear housing, with first and second connecting arms rotatably connected to the gear housing. A positioning motor is connected to the gear housing. Operation of the positioning motor slidably moves a sliding member slidably coupled to the gear housing. The sliding movement of the sliding member is used to move and rotate a first torque tube. First and second connecting plates are rotatably connected to the sliding member. Opposite ends of the second torque tube are fixed to first and second armrest portions of a base portion of the furniture component. The first and second connecting plates are also connected to the second torque tube such that displacement of the sliding member causes the base member to rotate relative to the base member rotation axis. A drive motor is coupled to first and second telescopic linkages connected to a leg rest assembly. The first and second telescopic linkages and the leg rest assembly are displaced between retracted and fully extended positions solely by operation of the drive motor.

The following description will make other areas of applicability of the present invention apparent.The description and specific examples in this summary are intended only to illustrate the present invention and are not intended to limit the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings of the present invention are only used to illustrate selected embodiments and do not include all possible implementations, and should not be construed as limiting the present invention.

FIG1 is a front right perspective view of a furniture component with a power mechanism according to the present disclosure;

FIG2 is a front right perspective view of the furniture component of FIG1 in the leg-rest extended position;

FIG3 is a right side view of the furniture component of FIG1 ;

FIG4 is a front right perspective view of the furniture component of FIG1 in a zero-gravity lying position;

FIG5 is a right side view of the furniture component of FIG4 further in the leg-rest extended position;

FIG6 is a front right perspective view of the furniture component of FIG5 with the backrest component further in the fully reclined position;

FIG7 is a right side view of the furniture component of FIG1 rotated to a fully raised position;

FIG8 is a front right perspective view of the mechanism of the furniture component of FIG1;

FIG9 is a front right perspective view of the mechanism of FIG8 with other components removed for clarity and the leg rest assembly in the leg rest extended position;

FIG10 is a front right perspective view of FIG4 , with the mechanism in a zero gravity position;

FIG11 further illustrates a front right perspective view of the leg rest assembly of FIG10 in the leg rest extended position;

FIG12 is a front right perspective view of the mechanism of FIG8 with other components removed for clarity;

FIG13 is a front right perspective view of the furniture component of FIG7 in a raised position with other components removed for clarity;

FIG14 is a front right perspective view of the furniture component of FIG6 with the backrest member in the fully reclined position, with other components removed for clarity;

Corresponding reference characters indicate corresponding parts throughout the different drawings.

DETAILED DESCRIPTION

Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

Referring to FIG. 1 , a furniture component 10 is shown as a recliner; however, the furniture component 10 may also take the form of a recliner, sofa, loveseat, ottoman, or similar furniture component designs. In the recliner embodiment, the furniture component 10 includes a base member 12 supported by a support frame 14 to a surface, such as a floor. A back member 16 is rotatably connected to the base member 12 and is shown in a fully upright position. The base member 12 includes a left side member and a right side member, each of which includes a first armrest portion 18 and a second armrest portion 20 located to the right and left sides of the user of the furniture component 10.

The user's weight is supported on a seat support frame 22, which is rotatably and movably connected to the backrest member 16 such that rotation of the backrest member also causes displacement of the seat support frame 22. A leg rest assembly 24 is positioned below and forward of the seat support frame 22. The leg rest assembly 24 is similar to conventional leg rest assemblies known in the art. A mechanism 26 is positioned between the first armrest portion 18 and the second armrest portion 20 and provides powered displacement of the base member 12, the backrest member 16, and the leg rest assembly 24.

2 , the leg rest assembly 24 is shown in a fully extended position and includes a first telescoping linkage 28 extending through a first panel aperture 30 of a leg rest abutment panel 32. The leg rest abutment panel 32 is secured to the first armrest portion 18 and the second armrest portion 20 and can be in direct contact with the leg rest assembly when the leg rest assembly is in the fully retracted position (shown in FIG1 ). A second telescoping linkage 34 extends through a second panel aperture 36 of the leg rest abutment panel 32. The second telescoping linkage 34, along with the first telescoping linkage 28, is connected to the mechanism 26 and is displaced by the operating mechanism 26.

Referring to FIG3 and again to FIG1 , the furniture component 10 is shown in the upright position, including the backrest member 16 rotated to a fully forward or upright position. Furthermore, first and second adjustable feet 38 and 40 are attached to either side of the bottom surface of the support frame 14 of the furniture component 10. The first and second adjustable feet 38 and 40 directly contact a floor surface 42 and elevate the furniture component 10 relative to the floor surface 42. The first and second armrest portions 18 and 20 (only the first armrest portion 18 is shown in this figure) each include a first armrest surface 44 that is substantially parallel to the floor surface 42 when the furniture component is in the upright position. A second armrest surface 46, intersecting the first armrest surface 44, forms an angle α with the floor in the upright position. According to several aspects, the angle α is defined to be approximately 20-30° in the upright position. The purpose of the angle α will become apparent from further discussion of FIG5 .

4 and again with reference to FIG. 3 , the furniture component 10 is shown after being rotated rearwardly about the base component rotation axis 48 relative to the base component rotation direction "A." At this point, the backrest member 16 remains in its fully forward or upright position. The furniture component 10 is positioned in the fully rearwardly rotated position, with the second armrest surface 46 substantially parallel to the floor surface 42. The leg rest assembly 24 is in its fully retracted position; however, the leg rest assembly 24 can also be extended to its fully extended position when the furniture component 10 is in the fully rearwardly rotated position, as shown and described in FIG. 5 .

5 and again with reference to FIG4 , as previously described, with the furniture component 10 fully rotated relative to the base component rotational direction “A,” the second armrest surface 46 is substantially parallel to the floor surface 42. When the leg rest assembly 24 is subsequently extended to the fully extended position (shown), the legs of the user of the furniture component 10 are fully supported by the leg rest assembly 24.

6 and again with reference to FIG. 5 , with the furniture member 10 positioned in the fully rearwardly rotated position and the leg rest assembly 24 extended to the fully extended position, selective operation of the mechanism 26 causes the back member 16 to rotate relative to the base member 12 about a back member rotational direction "B," i.e., in a rearward direction relative to the user of the furniture member 10. The back member 16 is coupled to the seat support frame 22 using a first back member linkage 50 and a second back member linkage (not visible in this view). Due to the first back member linkage 50, when the back member 16 rotates rearward, the seat support frame 22 shifts forward. The zero-gravity position of the furniture member 10 is defined when the back member 16 is positioned in the fully reclined position (shown) by rotating about the back member rotational direction "B," the base member 12 is positioned in the fully rearwardly rotated position by rotating relative to the base member rotational direction "A," and the leg rest assembly 24 is in the fully extended position. The zero gravity position is such that the height of the user's heart is substantially level with or below the height of the leg rest assembly 24 in the fully extended position.

7 and again with reference to FIGS. 1-6 , when the leg rest assembly 24 is positioned in its fully retracted position, the furniture component 10 also provides for operation of the mechanism 26 to rotationally move the base member 12 along a forward rotational arc “C” relative to the base member rotational axis 48. During rotation along the forward rotational arc “C,” the base member 12 rotates until the first armrest surface 44 reaches an angle β that defines the chair's raised position angle between the first armrest surface 44 and the floor surface 42. According to several aspects, the angle β is approximately 30-40 degrees. The raised position of the furniture component 10 facilitates a user standing up and leaving the furniture component 10. As for other operating conditions and positions of the furniture component 10, the mechanism 26 provides for powered displacement of the base member 12 to achieve the raised position shown.

Referring to FIG8 and again to FIG1 , various components of the mechanism 26 and the base member 12 will be described below. The base member 12 can be constructed using metal tubing including a first frame tube 52 oriented substantially parallel to a second frame tube 54 . The first and second frame tubes 52, 54 are each oriented parallel relative to the first and second armrest portions 18, 20. A rear cross tube 56 is fixedly connected between the first and second frame tubes 52, 54 and positioned substantially at the rear portion of the support frame 14. Similarly, but oppositely positioned, a front cross tube 58 is fixedly connected between the first and second frame tubes 52, 54 and located at the forward-facing end of the support frame 14. The first and second adjustment feet 38, 40 are adjustably connected to opposite ends of the underside, or ground-facing surface, of the first frame tube 52. Similarly, the first and second adjustment feet 38', 40' are adjustably connected to opposite ends of the underside, or ground-facing surface, of the second frame tube 54.

Base side walls 60, such as made of a plywood material, are secured to the second frame tube 54. The first frame tube 52 is also provided with opposing base side walls (not visible in this view for clarity). A base rear wall 62 is fixedly connected between the base side walls and, together with the leg rest adjacent panel 32, relatively encloses the space around the mechanism 26. Each base side wall, such as the illustrated base side wall 60, is positioned within a space defined between an inner armrest wall 64 of the second armrest portion 20 and an outer armrest wall 66 of the second armrest portion 20. According to several aspects, the inner armrest wall 64 and the outer armrest wall 66 are also made of a wood material such as a plywood material. The base side walls 60 are positioned in the space between the inner armrest wall 64 and the outer armrest wall 66 so that at least a portion of the bottom side can serve as a barrier to the mechanism 26 even when the base member 12 is rotated to the fully raised position shown and described in FIG. 7 .

The second backrest member linkage 68 is connected to the backrest member 16 on the right side and is a mirror image of the first backrest member linkage 50. The first backrest member linkage 50 and the second backrest member linkage 68 are each rotatably connected to a first torque tube 70, which is substantially parallel to the rear cross tube 56 and the front cross tube 58. The first torque tube 70 is axially rotatable relative to the longitudinal axis of the first torque tube 70, such that axial rotation of the first torque tube 70 causes displacement of the first backrest member linkage 50 and the second backrest member linkage 68, thereby causing rotation of the backrest member 16. As previously described, the first backrest member linkage 50 and the second backrest member linkage 68 are also each connected to the seat support frame 22, such that rotation of the backrest member 16 also causes the seat support frame 22 to displace in a generally forward or rearward direction relative to the user of the furniture member 10.

To operate the leg rest assembly 24, a DC drive motor 72 is provided at the front end of the support frame 14. Operating the drive motor 72 causes the drive rod 74 to rotate axially relative to the longitudinal axis of the drive rod 74. The drive rod 74 is substantially parallel to the first torque tube 70. A first support arm 76a and a second support arm 76b are rotatably connected to the drive rod 74 and are further connected to a support rod 78 positioned at the front end of the base member 12 and are also substantially parallel to the first torque tube 70. The first and second telescoping linkages 28 and 34 are each rotatably connected to each of the drive rod 74 and the support rod 78 to provide support for the leg rest assembly 24 in either the fully retracted or fully extended position.

To provide powered operation of the base member 12 to achieve the backrest member rotated position and the base member 12 raised position, a positioning motor 80 connected to a gear housing 82 is located near the leg rest drive motor 72. A gear assembly, such as a worm gear (not shown) within the gear housing 82, is rotated by operation of the positioning motor 80. A sliding member 84 is slidably disposed relative to the gear housing 82 and connected to the gear assembly within the gear housing 82. Rotation of the gear assembly within the gear housing 82 relative to the longitudinal axis of the gear housing 82 causes the sliding member 84 to move forward or rearward relative to the gear housing 82. First and second connecting plates 86a, 86b are rotatably connected to the sliding member 84 and are fixed relative to a second torque tube 88. The second torque tube 88 is also generally parallel to the first torque tube 70. Opposite ends of the second torque tube 88 are respectively fixed to the first armrest portion 18 and the second armrest portion 20. Longitudinal displacement of the sliding member 84 relative to the gear housing 82 causes the base member 12 to rotate relative to the base member rotation axis 48, as described with reference to FIGS. 4-7 , and the backrest member 16 to rotate, as further described herein.

In addition to the first and second connecting plates 86a and 86b, the sliding member 84 is also connected to first and second connecting arms 90 and 92, which are positioned at and rotatably connected to opposite ends of the sliding member 84. The first and second connecting arms 90 and 92 are rotatably connected to first and second connecting rods 94a and 94b, respectively, that are connected to the first torque tube 70. Linear displacement of the sliding member 84 is thereby coupled to the first torque tube 70, causing the first torque tube 70 to shift, thereby providing a motive force for the rotation of the backrest member 16.

Referring to FIG9 and again to FIG8 , as previously described, extension of the first and second telescopic linkages 28 and 34 is achieved by operating the drive motor 72. During displacement of the first and second telescopic linkages 28 and 34, the support rod 78 is slidably displaced in a forward direction relative to the support rod receiving members 96 connected to opposite sides of the seat support frame 22. The rotation of the drive rod 74 about its central longitudinal axis and the forward displacement of the support rod 78 provide for full extension of the linkage members of the first and second telescopic linkages 28 and 34. During extension or retraction of the leg rest assembly 24, the positioning motor 80 is inoperative; therefore, the sliding member 84 does not need to be displaced for extension or retraction of the leg rest assembly 24. The axial rotation of the drive rod 74 also causes the first and second motion links 98a and 98b connected to the support rod 78 to rotate forward, such that the rotation of the first and second motion links 98a and 98b causes the support rod 78 to displace forward.

Referring to Figure 10 and again to Figures 1 and 8-9 , to achieve the fully rearwardly rotated backrest position shown, the leg rest drive motor 72 is deactivated and the positioning motor 80 is electrically activated. Operation of the positioning motor 80 causes the sliding member 84 to slide forward. Because the first and second connecting plates 86a and 86b are connected to the sliding member 84 and the second torque tube 88, the forward sliding movement of the sliding member 84 directly displaces the second torque tube 88 forward and, through its connection to the first and second connecting arms 90 and 92, also pulls the first torque tube 70 forward. As the sliding member 84 moves forward, the orientation angle of the gear housing 82 is altered, causing the rearward-facing end of the gear housing 82 to rotate downward relative to its nominal position shown in Figure 8 . This downward displacement of the gear housing 82 causes the rear end of the base member 12 to rotate downward. During this operation, the forward displacement of the first torque tube 70 also causes the backrest member 16 to reposition along with the base member 12. When the furniture member 10 reaches the fully rearwardly rotated seat member position (shown), the front lower corner 99 of each of the first armrest portion 18 and the second armrest portion 20 (only the second armrest portion 20 is visible in this view) is displaced forward and upward relative to the corresponding position in the upright chair position shown in FIG.

11 and again with reference to FIG. 2 and FIG. 8-10 , as previously described, when the furniture member 10 is positioned in the furniture member fully rotated rearward position, the leg rest assembly 24, including each of the first telescoping linkage 28 and the second telescoping linkage 34, can be extended to their fully extended positions by operating the drive motor 72. This operation of the drive motor 72 is independent of any operation of the positioning motor 80, thereby allowing the leg rest assembly 24 to operate completely independently.

8, by operating the positioning motor 80 in the forward or rearward operating direction, the sliding member 84 can slide in the forward or rearward direction relative to the gear housing 82. To allow displacement of each of the first and second connecting arms 90 and 92, these members are rotatably connected to the sliding member 84 using a sliding member connecting shaft 100. Thus, axial sliding movement of the sliding member 84 is permitted by the rotational connection of the sliding member connecting shaft 100 with the first and second connecting arms 90 and 92, which also allows the gear housing 82 to rotate upward and downward when the sliding member 84 is axially displaced.

13 and again with reference to FIG. 12 , to reposition the base member 12 to the fully raised position shown, the positioning motor 80 is operated, which rotates a gear assembly (not shown) within the gear drive assembly 102, thereby axially displacing the slide member 84 on the gear housing 82 in a rearward and upward displacement direction "D." The positioning motor 80 and the gear drive assembly 102 are rotatably connected to the front cross tube 58 via a clevis 104 extending from the gear drive assembly 102, which is rotatably connected to a U-shaped bracket 106 using a clevis pin 108. The U-shaped bracket 106 is secured to the front cross tube 58 such that the clevis pin 108 defines a motor rotation axis 110. The rearward displacement of the slide member 84 and, subsequently, the rearward displacement of the first and second connecting arms 90, 92 thereby forces the seat support frame 22 and the base member 12 to rotate in the forward or raising rotation direction "C" relative to the base member rotation axis 48.

The drive motor 72 is connected to a drive motor gear drive assembly 112 having an internal gear assembly (not shown) connected to an axle housing 114. Operation of the drive motor 72 and the gear assembly within the drive motor gear drive assembly 112 causes an axial displacement shaft 116 to axially extend or retract relative to the axle housing 114. Extension or retraction of the axial displacement shaft 116 causes the drive rod 74, depicted in FIG8 , to rotate. To provide for rotation of the base member 12, a mounting pin 118 is connected to each side of the seat support frame 22 such that the mounting pin 118 defines the base member rotation axis 48.

14 and again with reference to FIG. 6 , after the base member 12 reaches the furthest rearward rotational position of the furniture member shown, further operation of the positioning motor 80 causes the slide member 84 to be further slidably extended in the forward direction "E" relative to the gear housing 82. This displacement of the slide member 84 causes the first torque tube 70 to be further displaced forward, and the seat support frame 22 to be displaced forward. As the first torque tube 70 is repositioned forward, the back member 16 is rotated in the back member rotational direction "B" to the fully reclined position due to the linkage connection between the first torque tube 70 and the first and second back member linkages 50, 68 as described above.

The exemplary embodiments described above are intended to fully and thoroughly convey the present disclosure to those skilled in the art. Many of the specific details, such as examples of specific components, devices, and methods, are provided to further illustrate the present disclosure. It will be apparent to those skilled in the art that the specific details described above need not be exhaustive, and that exemplary embodiments may be embodied in many different forms, none of which should be construed as limiting the scope of the disclosure. In some embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

The terms used herein are intended to describe specific embodiments only and are not intended to be limiting. Singular descriptions used herein may include plural descriptions unless the context clearly indicates otherwise. The terms "comprising" and "having" and the like refer only to containing, i.e., containing the described features, wholes, steps, operations, components and/or the presence of components, but do not exclude the presence of one or more other features, wholes, steps, operations, components, components and/or combinations thereof. The method steps, processes and operations described herein do not have to be performed in the specific order discussed or described herein, unless the order of execution is specifically indicated. It is understood that additional or alternative steps may be used.

When a component or layer is referred to as being "on," "engaged to," or "connected to" another component or layer, it can be directly on, or directly engaged or connected to, the other component or layer, but intervening components or layers may also be present. In contrast, when the word "directly" is used, there may be no intervening components or layers. Other words describing the relationship between components should be interpreted accordingly (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.). As used herein, "and/or" includes any one or more of the related items and all combinations thereof.

Although the terms first, second, third, etc. are used herein to describe various components, parts, regions, layers and/or portions, these components, parts, regions, layers and/or portions are not limited by these words. These words are only used to distinguish one component, component, region, layer or portion from another region, layer or portion. As used herein, terms such as "first," "second," and other numerical terms do not imply an order or sequence unless the context clearly indicates so. Therefore, in the following discussion, the so-called first component, first part, first region, first layer or first portion may also be referred to as the second component, second component, second region, second layer or second portion without departing from the embodiments.

As used herein, relative spatial terms, such as "in," "out," "below," "beneath," "lower," "above," and the like, are used to describe the relationship of one illustrated component or feature to another component or feature. Relative spatial terms may encompass orientations other than those depicted in the drawings during actual use or operation of the device. For example, if the device in the drawings were flipped over, components described as "below" or "beneath" other components or features would be oriented "above" the other components or features. Thus, examples of the term "below" would encompass both an orientation of above and below. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and the spatial terms would be adjusted accordingly.

The embodiments described above are provided for illustration and description. They are not intended to be exhaustive or to limit the present invention. Components or features described in a particular embodiment are generally not limited to that particular embodiment; where applicable, they are interchangeable and can be used in embodiments not specifically shown or described herein. Numerous variations are possible in other embodiments. Such variations do not depart from the present disclosure and are intended to be encompassed by it.

Claims (44)

1. A power mechanism for furniture components that provides lifting and zero-gravity operation positions, including: First torque tube; A first link and a second link are fixed to the first torque tube, the first link being rotatably connected to a first connecting arm, and the second link being rotatably connected to a second connecting arm; Gear housing; the first connecting arm and the second connecting arm are rotatably connected to the gear housing; A positioning motor connected to the gear housing is operated to slidably move a sliding member slidably coupled to the gear housing. The sliding motion of the sliding member is used to move the first connecting arm and the second connecting arm, thereby moving and rotating the first torque tube. A first connecting plate and a second connecting plate rotatably connected to the sliding member; and The second torque tube; the opposite ends of the second torque tube are respectively fixed to the first armrest portion and the second armrest portion of the base portion of the furniture component, and the first connecting plate and the second connecting plate are also connected to the second torque tube, so that the movement of the sliding component causes the base component to rotate. 2. The furniture component power mechanism providing a lifting and zero-gravity operation position as described in claim 1, characterized in that when the sliding member is positioned in a fully rearward position at the gear housing position, the base portion is positioned in a lifting operation position, the lifting operation position having a first armrest surface of the base portion, the first armrest surface being oriented at an angle of 30 to 40 degrees relative to the floor surface. 3. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 2, further comprising: a backrest component rotatably connected to the first torque tube, wherein when the sliding component is positioned in the fully forward position of the gear housing, the base portion is moved forward to the zero-gravity operating position, the zero-gravity operating position having a second armrest surface of the base portion, the second armrest surface being substantially parallel to the floor surface, and the backrest component being fully rotated rearward to a fully reclined position. 4. The furniture component power mechanism providing a lifting and zero-gravity operating position as described in claim 1, characterized in that it further comprises: Drive motor; and The first and second scaling linkages connected to the leg rest assembly are displaced between a retracted or fully extended position by operating the drive motor. Specifically, when the sliding member is positioned in the gear housing position completely rearward, the base portion is positioned in the lifting operation position. 5. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 4, characterized in that during the rotation of the base portion to the lifting operating position, the drive motor is not operated, such that the leg rest assembly and the first and second telescopic linkage groups remain in the retracted position of the lifting operating position. 6. The furniture component power mechanism for providing a lifting and zero-gravity operating position as described in claim 4, further comprising: Drive lever; and A support rod parallel to the drive rod, the support rod being slidably displaced relative to the support rod receiving member in a forward or backward direction; the support rod receiving member connects the drive rod to opposite sides of the seat support frame; The rotation of the drive rod around its central longitudinal axis and the forward displacement of the support rod cause the first and second scaling linkages to extend fully. 7. The furniture component power mechanism providing a lifting and zero-gravity operating position as claimed in claim 1, characterized in that the second torque tube is substantially parallel to the first torque tube, the first torque tube is rotatable relative to the longitudinal axis of the first torque tube, and the second torque tube is fixed and non-rotatable. 8. The furniture component power mechanism providing a lifting and zero-gravity operating position as claimed in claim 1, characterized in that, by operating the positioning motor, the sliding displacement of the sliding component selectively causes the sliding component to move forward, or the sliding component to move backward relative to the gear housing, the forward displacement of the sliding component causes the furniture component base component to rotate backward, and the backward displacement of the sliding component relative to the gear housing causes the base component to rotate forward to the lifting position. 9. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 1, characterized in that the power mechanism further includes a backrest component linkage rotatably connected to the backrest component and for rotating the backrest component, wherein the first torque tube is connected to the backrest component linkage such that displacement of the first torque tube causes the backrest component to rotate. 10. Furniture component power mechanisms that provide lifting and zero-gravity operating positions, including: First torque tube; A first link and a second link are fixed to the first torque tube, the first link being rotatably connected to a first connecting arm, and the second link being rotatably connected to a second connecting arm; A gear housing, wherein the first connecting arm and the second connecting arm are rotatably connected to the gear housing; A positioning motor connected to the gear housing is operated to slidably move a sliding member slidably coupled to the gear housing. The sliding movement of the sliding member is used to move the first connecting arm and the second connecting arm, thereby moving and rotating the first torque tube. The movement of the first torque tube causes the base portion of the furniture component to rotate, and the rotation of the first torque tube causes the backrest component coupled to the base portion to rotate. Drive motor; and The first and second telescopic linkages connected to the leg rest assembly, along with the leg rest assembly, move between a retracted or fully extended position solely by operating the drive motor. 11. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 10, further comprising a first connecting plate and a second connecting plate rotatably connected to the sliding component. 12. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 11, characterized in that it further includes a second torque tube; the two ends of the second torque tube are respectively fixed to a first armrest portion and a second armrest portion of the base portion of the furniture component, and the first connecting plate and the second connecting plate are also connected to the second torque tube, such that displacement of the sliding member causes the base component to rotate. 13. The furniture component power mechanism for providing a lifting and zero-gravity operating position as described in claim 10, further comprising: A tubular support frame that is connected to the floor surface and supports the base portion to the floor surface, the tubular support frame comprising a first frame tube and a second frame tube; They are respectively fixed to the base sidewalls of the first frame tube and the second frame tube, and each base sidewall is positioned within the space defined between the inner handrail wall of the first handrail part or the outer handrail wall of the second handrail part. 14. The furniture component power mechanism for providing a raised and zero-gravity operating position as claimed in claim 13, further comprising a mounting pin connected to each base sidewall, the mounting pin rotatably supporting the armrest portion to the base wall and defining a rotation axis of the base component. 15. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 10, characterized in that when the sliding member is positioned in the fully rearward position of the gear housing, the sliding member rotates the base portion rearward relative to the rotation axis of the base component, thereby defining a lifting operating position in which the first armrest surface of the base portion is oriented at an angle of 30 to 40 degrees relative to the floor surface, and the backrest component is fully rotated forward to a fully upright backrest position. 16. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 15, characterized in that the backrest component is rotatably connected to the first torque tube, and when the sliding component is positioned in the fully forward position of the gear housing, the sliding component rotates the base portion rearward relative to the rotation axis of the base component, thereby defining the zero-gravity operating position, in which the second armrest surface of the base portion is substantially parallel to the floor surface, and the backrest component is fully rotated rearward to the fully reclined position. 17. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 16, characterized in that the positioning motor does not operate during the extension or retraction of the leg assembly. 18. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 16, characterized in that the drive motor is inoperable during the operation of the positioning motor to rotate the base component to the lifting operating position, and the leg rest assembly remains in the retracted position. 19. A power mechanism for furniture components that provides lifting and zero-gravity operating positions, including: A gear housing, a first connecting arm and a second connecting arm are rotatably connected to the gear housing; A positioning motor connected to the gear housing is operated to slidably shift a sliding member slidably coupled to the gear housing, the sliding motion of the sliding member being used to shift and rotate the first torque tube; A first connecting plate and a second connecting plate are rotatably connected to the sliding member; The second torque tube; the two opposite ends of the second torque tube are respectively fixed to the first armrest portion and the second armrest portion of the base portion of the furniture component, and the first connecting plate and the second connecting plate are also connected to the second torque tube, so that the displacement of the sliding component causes the base component to rotate relative to the rotation axis of the base component. Drive motor; and The first and second scaling linkages connected to the leg rest assembly are displaced between the retracted and fully extended positions by operating the drive motor only. 20. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 19, further comprising a first link and a second link fixed to the first torque tube. 21. The furniture component power mechanism for providing a lifting and zero-gravity operating position as claimed in claim 20, further comprising a first connecting arm and a second connecting arm rotatably connected to the first link and the second link and rotatably connected to the sliding member. 22. The furniture component power mechanism providing a lifting and zero-gravity operating position as claimed in claim 20, characterized in that when the sliding member moves forward, the orientation angle of the gear housing is changed, causing the rearward-facing end of the gear housing to rotate downward. 23. The furniture component power mechanism providing a lifting and zero-gravity operating position as described in claim 20, characterized in that when the sliding member moves backward, the orientation angle of the gear housing is changed, causing the rearward-facing end of the gear housing to rotate upward. 24. Furniture components, including: Supporting framework; The base portion is connected to the support frame and is movable relative to the support frame between a rearward tilting position and a forward lifting position. A first torque tube; which is connected to the base portion; A first link and a second link are fixed to the first torque tube, the first link being rotatably connected to a first connecting arm, and the second link being rotatably connected to a second connecting arm; A sliding member; which connects a first connecting arm and a second connecting arm and moves the first connecting arm and the second connecting arm, thereby moving and rotating the first torque tube; A first connecting plate and a second connecting plate rotatably connected to the sliding member; and A second torque tube is connected to the base portion and the first and second connecting plates, such that movement of the sliding member causes the base portion to rotate relative to the support frame between the rearward tilt position and the forward lifting position, while the support frame remains stationary relative to the floor surface on which the furniture components are placed. 25. The furniture component as claimed in claim 24, characterized in that: when the sliding component is positioned in a fully rearward position at a gear housing position, the base portion is positioned in a forward-lifted position, the forward-lifted position having an armrest surface of the base portion, the armrest surface being oriented at an angle of 30 to 40 degrees relative to the floor surface. 26. The furniture component of claim 25, characterized in that: it also includes a backrest component rotatably connected to the first torque tube, wherein when the sliding component is positioned in the fully forward position of the gear housing, the base portion is moved forward to the rearward tilt position, the rearward tilt position having an armrest surface of the base portion, the armrest surface being substantially parallel to the floor surface, and the backrest component is fully rotated rearward to the fully reclined position. 27. The furniture component as claimed in claim 24, further comprising: Drive motor; and The first and second scaling linkages connected to the leg rest assembly are displaced between a retracted or fully extended position by operating the drive motor. Specifically, when the sliding member is positioned in the fully rearward position, the base portion is positioned in the forward-lifted position. 28. The furniture component of claim 27, wherein during the rotation of the base portion to the forward lifting position, the drive motor is not operated, such that the leg rest assembly and the first and second telescopic linkage assemblies remain in the retracted position of the lifting operation position. 29. The furniture component as claimed in claim 27, further comprising: Drive lever; and A support rod parallel to the drive rod, the support rod being slidably displaced relative to the support rod receiving member in a forward or backward direction; the support rod receiving member connects the drive rod to opposite sides of the seat support frame; The rotation of the drive rod around its central longitudinal axis and the forward displacement of the support rod cause the first and second scaling linkages to extend fully. 30. The furniture component of claim 27, further comprising a positioning motor that slidably moves the sliding component. 31. The furniture component as claimed in claim 24, wherein the second torque tube is substantially parallel to the first torque tube, the first torque tube is rotatable relative to the longitudinal axis of the first torque tube, and the second torque tube is non-rotatable. 32. The furniture component as claimed in claim 25, characterized in that the sliding displacement of the sliding component caused by operating a positioning motor selectively causes the sliding component to move forward or the sliding component to move backward relative to the gear housing, the forward displacement of the sliding component causes the furniture component base component to rotate backward, and the backward displacement of the sliding component relative to the gear housing causes the base component to rotate forward to a forward-lifted position. 33. The furniture component of claim 24, wherein the furniture component further comprises a backrest component linkage rotatably connected to the backrest component and used for rotating the backrest component, wherein the first torque tube is connected to the backrest component linkage such that displacement of the first torque tube causes the backrest component to rotate. 34. The furniture component as claimed in claim 24, wherein the support frame comprises a pair of front legs and a pair of rear legs; when the base portion moves relative to the support frame, the pair of front legs and the pair of rear legs contact the floor surface and remain fixed to the floor surface. 35. Furniture components, including: Supporting framework; The base portion; the base portion is connected to the support frame; Backrest component; which is movably connected to the base portion; First torque tube; A first link and a second link are fixed to the first torque tube, the first link being rotatably connected to a first connecting arm, and the second link being rotatably connected to a second connecting arm; A positioning motor slidably moves a sliding member, thereby moving and rotating the first torque tube; the displacement of the first torque tube causes the base portion to rotate relative to the support frame between a rearward tilt position and a forward lifting position, while the rotation of the first torque tube causes the backrest member to rotate relative to the base portion. The drive motor is located in the base section; The first and second linkage groups connected to the leg rest assembly, as well as the leg rest assembly, move relative to the base portion between a retracted or fully extended position only by operating the drive motor. A first connecting plate and a second connecting plate rotatably connected to the sliding member; and The second torque tube; the opposite ends of the second torque tube are respectively fixed to the first armrest portion and the second armrest portion of the base portion of the furniture component, and the first connecting plate and the second connecting plate are also connected to the second torque tube, so that the movement of the sliding component causes the base component to rotate. 36. The furniture component as claimed in claim 35, wherein the support frame comprises a first frame tube and a second frame tube and a pair of base sidewalls respectively fixed to the first frame tube and the second frame tube, each base sidewall being positioned within a space defined between the inner armrest wall of the first armrest portion or the outer armrest wall of the second armrest portion. 37. The furniture component of claim 36, further comprising a mounting pin connected to each base sidewall, the mounting pin rotatably supporting the armrest portion to the base wall and defining a rotation axis of the base component. 38. The furniture component as claimed in claim 35, wherein when the sliding member is positioned in a gear housing fully rearward position, the sliding member rotates the base portion rearward relative to the rotation axis of the base component, thereby defining a forward lifting position, in which the first armrest surface of the base portion is oriented at an angle of 30 to 40 degrees relative to the floor surface, and the backrest component is fully rotated forward to a fully upright backrest position. 39. The furniture component of claim 38, wherein the backrest component is rotatably connected to the first torque tube, and when the sliding component is positioned in the fully forward position of the gear housing, the sliding component rotates the base portion rearward relative to the rotation axis of the base component, thereby defining a rearward tilt position, in which the second armrest surface of the base portion is substantially parallel to the floor surface, and the backrest component is fully rotated rearward to the fully reclined position. 40. The furniture component as claimed in claim 39, wherein the positioning motor is not operated during the extension or retraction of the leg assembly. 41. The furniture component of claim 39, wherein the drive motor is inoperable during the operation of the positioning motor to rotate the base portion to the lifting operation position, and the leg rest assembly remains in the retracted position. 42. The furniture component as claimed in claim 35, wherein the support frame comprises a pair of front legs and a pair of rear legs; when the base portion moves relative to the support frame, the pair of front legs and the pair of rear legs contact the floor surface and remain fixed to the floor surface. 43. Furniture components, including: Supporting framework; The base portion; the base portion is connected to the support frame; Backrest component; which is movably connected to the base portion; First torque tube; A connecting rod is fixed to the first torque tube, the connecting rod being rotatably connected to a connecting arm; A positioning motor is slidably connected to a sliding member of a connecting arm, such that the displacement of the sliding member moves and rotates the first torque tube; the displacement of the first torque tube causes the base portion to rotate relative to the support frame between a rearward tilt position and a forward lifting position, while the rotation of the first torque tube causes the backrest member to rotate relative to the base portion. The drive motor is located in the base section; A linkage assembly connected to the leg rest assembly and the drive motor allows the linkage assembly and the leg rest assembly to move relative to the base portion between a retracted and fully extended position solely by operating the drive motor; and The second torque tube has its two ends fixed to the base portion and is connected to the sliding member, such that the movement of the sliding member causes the base portion to rotate, and when the backrest member rotates relative to the base portion, the first torque tube can rotate relative to the second torque tube. 44. The furniture component as claimed in claim 43, wherein the support frame comprises a first frame tube and a second frame tube and a pair of base sidewalls respectively fixed to the first frame tube and the second frame tube, each base sidewall being positioned within a space defined between the inner armrest wall of the first armrest portion or the outer armrest wall of the second armrest portion. Mounting pins are attached to each base sidewall, which rotatably support the armrest portion to the base wall and define the axis of rotation of the base component; The backrest component is rotatably connected to the first torque tube. When the sliding member is positioned in the fully rearward position of the gear housing, the base portion rotates forward relative to the rotation axis of the base member. When the sliding member is positioned in the fully forward position of the gear housing, the base portion rotates rearward relative to the rotation axis of the base member; and When the base portion moves relative to the support frame, the support frame remains fixed relative to the floor surface.