A linkage swing arm drive structure and a zero-gravity sofa chair using it

Abstract

This utility model provides a linkage swing arm drive structure and a zero-gravity sofa chair using the same. The frame of the zero-gravity sofa chair is mounted on a base composed of the linkage swing arm drive structure. The forward and backward swing of the linkage swing arm drive structure causes the sofa frame to swing forward synchronously to a tilted state with the head lower than the feet or swing backward to a horizontal reset state. This solves the technical problem in the prior art where the frame base is fixed and the zero-gravity state can only be achieved by the swing of the upper frame structure itself. Furthermore, by setting the linkage swing arm drive structure with swing action, the sofa chair produces an arc-shaped upward tilting effect when changing to a zero-gravity posture, resulting in better user comfort and experience.

Description

Technical Field

[0001] This utility model relates to the field of zero-gravity sofa chair technology, and in particular to a linkage swing arm drive structure and a zero-gravity sofa chair using the same. Background Technology

[0002] The concept of "zero gravity" originated in the field of manned spaceflight, referring to a specific supine posture adopted by astronauts during ascent. This posture effectively disperses the enormous acceleration pressure on the body, achieving a relatively balanced state of force distribution across different parts of the body, thereby greatly reducing the burden on the body. Currently, some lounge chairs, massage chairs, and high-end sofas have incorporated the zero gravity concept.

[0003] Chinese patent CN202322134268.1 discloses a zero-wall, zero-gravity sofa chair, including a sofa base. The sofa base includes a base frame, side frames connected to both sides of the base frame, and a headrest frame disposed between the two side frames. A connecting side plate is also connected between the two side frames. A headrest board is disposed above the headrest frame, and the headrest board is driven to swing up and down by a swing mechanism mounted on the headrest frame. A frame mounted on the sofa base includes a backrest frame, a thigh frame, and a calf frame, and the backrest frame, thigh frame, and calf frame are hinged to each other. The frame is driven to swing by a drive unit. The backrest frame is connected to the headrest frame and drives the headrest frame to perform translational and swinging movements.

[0004] However, in existing technical solutions, the frame base is fixed, and the zero-gravity state of head-down and feet-up can only be achieved by the swinging of the upper skeleton structure itself. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a linkage swing arm drive structure and a zero-gravity sofa chair using the same. The zero-gravity sofa chair's frame is mounted on a base constructed from the linkage swing arm drive structure. The forward and backward swing of the linkage swing arm drive structure causes the sofa frame to swing forward synchronously to a tilted state with the head lower than the feet, or swing backward to a horizontal reset state. This solves the technical problem in existing technologies where the frame base is fixed and the zero-gravity state is achieved solely by the swing of the upper frame structure. Furthermore, by incorporating the swinging linkage swing arm drive structure, the sofa chair produces an arc-shaped upward tilt when it transitions to a zero-gravity posture, resulting in greater user comfort and a better overall experience.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A linkage swing arm drive structure includes a base, on which a linkage swing arm mechanism is mounted, and a swing frame is connected to the linkage swing arm mechanism. A swing drive mechanism is connected between the base and the swing frame. The extension and retraction of the swing drive mechanism drives the linkage swing arm mechanism to move synchronously and causes the swing frame to swing back and forth.

[0008] Preferably, the linkage swing arm mechanism includes a front linkage assembly and a rear linkage assembly respectively disposed at the front and rear parts of the base.

[0009] Preferably, the front linkage assembly includes a first link and a second link that are hinged to each other, the first link being connected to the base and the second link being connected to the front of the swing frame.

[0010] Preferably, the rear linkage assembly includes a third link and a fourth link that are hinged to each other, the third link being connected to the base and the fourth link being connected to the rear of the swing frame.

[0011] Preferably, the lower end of the first link is hinged to the base, the lower end of the second link is fixedly connected to the swing frame, and the upper end of the first link is hinged to the upper end of the second link.

[0012] Preferably, the lower end of the third link is fixedly connected to the base, the lower end of the fourth link is hinged to the swing frame, and the upper end of the third link is hinged to the upper end of the fourth link.

[0013] Preferably, the third link is vertically arranged.

[0014] Preferably, two sets of the front connecting rod assemblies are symmetrically arranged on both sides of the front part of the base, and two sets of the rear connecting rod assemblies are symmetrically arranged on both sides of the rear part of the base.

[0015] Preferably, the first link and the fourth link have the same length.

[0016] Preferably, the swing frame is configured as a frame structure, with its four corners connected to the linkage swing arm mechanism.

[0017] Preferably, the swing drive mechanism is arranged to extend and retract in the front-to-back direction, with its front part hinged to the front part of the swing frame and its rear part hinged to the rear part of the base.

[0018] Preferably, the swing drive mechanism is a push rod motor.

[0019] This utility model also provides a zero-gravity sofa chair, including the linkage swing arm drive structure as described above, and a skeleton part for supporting the user's body. The skeleton part is installed on the swing frame so that it swings forward with the swing frame to an inclined state with the head lower than the feet or swings backward to a horizontal reset state.

[0020] Preferably, the skeleton can be changed into a sitting or lying position.

[0021] The beneficial effects of this utility model are as follows:

[0022] (1) The linkage swing arm drive structure of this utility model connects the linkage swing arm mechanism and the swing drive mechanism between the base and the swing frame. The internal structure is designed to match. The extension and retraction of the swing drive mechanism drives the linkage swing arm mechanism to move synchronously, so that the swing frame tilts in a swing motion mode. When applied to zero-gravity sofas, it can make the state change process more comfortable, with good use effect and strong practicality.

[0023] (2) In this utility model, the frame of the zero-gravity sofa chair is installed on the base composed of a linkage swing arm drive structure. The forward and backward swing of the linkage swing arm drive structure drives the sofa frame to swing forward synchronously to the tilted state of head low and feet high or swing backward to the horizontal reset state, which enables the user to lie down in a zero-gravity state during massage and enjoy a more comfortable state.

[0024] (3) The zero-gravity sofa chair in this utility model has a linkage arm drive structure for swinging motion, which makes the sofa chair produce an arc-shaped upward tilting effect when it changes to a zero-gravity posture. Compared with the method of only the foot end is directly driven to lift, the user feels more comfortable and has a better experience.

[0025] (4) In this utility model, the linkage swing arm drive structure is provided with two sets of front linkage assemblies symmetrically arranged on the front two sides of the base and two sets of rear linkage assemblies symmetrically arranged on the rear two sides of the base. The swing frame is set as a frame structure, and its four corners are respectively connected to the two sets of front linkage assemblies and the two sets of rear linkage assemblies. The overall structure is stable, the swing reliability is high, and the comfort is good. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the linkage swing arm drive structure (reset state) in this utility model;

[0027] Figure 2 for Figure 1 The front view;

[0028] Figure 3 This is a schematic diagram of the overall structure of the linkage swing arm drive structure (in an inclined state) in this utility model;

[0029] Figure 4 for Figure 3 The front view;

[0030] Figure 5 This is a schematic diagram of the overall structure of the zero-gravity sofa chair (in a tilted sitting position) of this utility model;

[0031] Figure 6 This is a schematic diagram of the overall structure of the zero-gravity sofa chair (sitting posture reset state) in this utility model;

[0032] Figure 7 This is a schematic diagram of the overall structure of the zero-gravity sofa chair (reclining tilted position) in this utility model. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "degree", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Example 1

[0037] like Figure 1 As shown, a linkage swing arm drive structure includes a base 1, a linkage swing arm mechanism 2 is mounted on the base 1, a swing frame 3 is connected to the linkage swing arm mechanism 2, and a swing drive mechanism 4 is connected between the base 1 and the swing frame 3. The extension and retraction of the swing drive mechanism 4 drives the linkage swing arm mechanism 2 to move synchronously and causes the swing frame 3 to swing back and forth.

[0038] In this embodiment, the lever arm drive structure connects the lever arm mechanism 2 and the swing drive mechanism 4 between the base 1 and the swing frame 3. The extension and retraction of the swing drive mechanism 4 drives the lever arm mechanism 2 to move synchronously, thereby making the swing frame 3 tilt in a swing motion mode. When applied to zero-gravity sofas, this makes the state change process more comfortable, with good performance and strong practicality.

[0039] As a preferred option, such as Figure 2 As shown, the linkage swing arm mechanism 2 includes a front linkage assembly 21 and a rear linkage assembly 22 respectively disposed at the front and rear parts of the base 1.

[0040] As a preferred option, such as Figure 3-4 As shown, the front linkage assembly 21 includes a first link 211 and a second link 212 that are hinged to each other. The first link 211 is connected to the base 1, and the second link 212 is connected to the front of the swing frame 3.

[0041] Preferably, the rear link assembly 22 includes a third link 221 and a fourth link 222 that are hinged to each other. The third link 221 is connected to the base 1, and the fourth link 222 is connected to the rear of the swing frame 3.

[0042] Preferably, the lower end of the first connecting rod 211 is hinged to the base 1, the lower end of the second connecting rod 212 is fixedly connected to the swing frame 3, and the upper end of the first connecting rod 211 is hinged to the upper end of the second connecting rod 212.

[0043] Preferably, the lower end of the third link 221 is fixedly connected to the base 1, the lower end of the fourth link 222 is hinged to the swing frame 3, and the upper end of the third link 221 is hinged to the upper end of the fourth link 222.

[0044] Preferably, the third link 221 is arranged vertically.

[0045] As a preferred option, such as Figure 3 As shown, the swing drive mechanism 4 is arranged to extend and retract in the front-to-back direction, with its front part hinged to the front part of the swing frame 3 and its rear part hinged to the rear part of the base 1.

[0046] Preferably, the swing drive mechanism 4 is a push rod motor.

[0047] It should be further explained that when the swing frame 3 is in its initial state, it is set horizontally. At this time, the telescopic drive end of the swing drive mechanism 4 extends forward. When it is necessary to change the swing frame 3 to an inclined state with the front lower and the rear higher, the telescopic drive end of the swing drive mechanism 4 retracts backward, pulling the front part of the swing frame 3 backward. Under the action of the linkage swing arm mechanism 2, the front part of the swing frame 3 moves downward and backward, and the rear part of the swing frame 3 moves upward and backward. Thus, the swing frame 3 as a whole swings in an arc shape, which is the process of the rear part tilting upward.

[0048] Example 2

[0049] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0050] As a preferred option, such as Figure 1 , 3 As shown, two sets of front connecting rod assemblies 21 are symmetrically arranged on both sides of the front part of the base 1, and two sets of rear connecting rod assemblies 22 are symmetrically arranged on both sides of the rear part of the base 1.

[0051] Preferably, the swing frame 3 is configured as a frame structure, with its four corners connected to the connecting rod swing arm mechanism 2.

[0052] In this embodiment, two sets of front connecting rod assemblies 21 are symmetrically arranged on the front two sides of the base 1, and two sets of rear connecting rod assemblies 22 are symmetrically arranged on the rear two sides of the base 1. The swing frame 3 is a frame structure, and its four corners are connected to the two sets of front connecting rod assemblies 21 and the two sets of rear connecting rod assemblies 22 respectively. The overall structure is stable, the swing reliability is high, and the comfort is good.

[0053] Preferably, the first link 211 and the fourth link 222 have the same length.

[0054] Example 3

[0055] A zero-gravity sofa chair, such as Figure 5-6 As shown, the system includes the linkage swing arm drive structure as described in any of the above embodiments, and also includes a skeleton part 5 for supporting the user's body. The skeleton part 5 is mounted on the swing frame 3 so that it swings forward with the swing frame 3 to an inclined state with the head lower than the feet or swings backward to a horizontal reset state.

[0056] In this embodiment, the frame 5 of the zero-gravity sofa chair is mounted on the base 1, which is composed of a linkage swing arm drive structure. The forward and backward swing of the linkage swing arm drive structure causes the frame 5 to swing forward synchronously to a tilted state with the head lower than the feet or to swing backward to a horizontal reset state, which allows the user to lie down in a zero-gravity state during massage and enjoy a more comfortable state.

[0057] It is worth noting that by setting up a swing arm drive structure with a swinging motion, the sofa chair produces an arc-shaped upward tilting effect when it changes to a zero-gravity posture. Compared to setting a motor at the foot of the chair to achieve a tilting effect by simply moving the feet up and down, the swing drive structure in this embodiment provides users with better comfort and a more pleasant experience. Furthermore, due to the limited space at the bottom of the swing arm drive structure, the motor cannot be installed in the center, resulting in uneven force distribution on the left and right sides during lifting and lowering, leading to a relatively poor level of comfort.

[0058] As a supplementary explanation, the skeleton portion 5 can be transformed as follows: Figure 5-6 The sitting posture shown or as Figure 7 The specific structure of the lying position shown is existing technology, so it will not be described in detail.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A link swing arm drive structure characterized by, Includes a base (1), on which a linkage swing arm mechanism (2) is mounted, and a swing frame (3) is connected to the linkage swing arm mechanism (2). A swing drive mechanism (4) is connected between the base (1) and the swing frame (3). The extension and retraction of the swing drive mechanism (4) drives the linkage swing arm mechanism (2) to move synchronously and causes the swing frame (3) to swing back and forth.

2. A link swing arm drive structure according to claim 1, wherein The linkage swing arm mechanism (2) includes a front linkage assembly (21) and a rear linkage assembly (22) respectively disposed at the front and rear parts of the base (1); The front link assembly (21) includes a first link (211) and a second link (212) that are hinged to each other. The first link (211) is connected to the base (1), and the second link (212) is connected to the front part of the swing frame (3). The rear link assembly (22) includes a third link (221) and a fourth link (222) that are hinged to each other. The third link (221) is connected to the base (1), and the fourth link (222) is connected to the rear part of the swing frame (3).

3. A link swing arm drive structure according to claim 2, wherein The lower end of the first connecting rod (211) is hinged to the base (1), the lower end of the second connecting rod (212) is fixedly connected to the swing frame (3), and the upper end of the first connecting rod (211) is hinged to the upper end of the second connecting rod (212). The lower end of the third link (221) is fixedly connected to the base (1), the lower end of the fourth link (222) is hinged to the swing frame (3), and the upper end of the third link (221) is hinged to the upper end of the fourth link (222).

4. A link swing arm drive structure according to claim 3, wherein The third link (221) is set vertically.

5. A link swing arm drive structure according to claim 2, wherein Two sets of the front connecting rod assemblies (21) are symmetrically arranged on both sides of the front part of the base (1), and two sets of the rear connecting rod assemblies (22) are symmetrically arranged on both sides of the rear part of the base (1).

6. A link swing arm drive structure according to claim 2, wherein The first link (211) and the fourth link (222) have the same length.

7. A link swing arm drive structure according to any one of claims 1 to 6, wherein The swing frame (3) is configured as a frame structure, and its four corners are connected to the linkage swing arm mechanism (2).

8. A link swing arm drive structure according to any one of claims 1 to 6, wherein The swing drive mechanism (4) is arranged to extend and retract in the front-to-back direction, with its front part hinged to the front part of the swing frame (3) and its rear part hinged to the rear part of the base (1).

9. A link swing arm drive structure according to any one of claims 1 to 6, wherein The swing drive mechanism (4) is a push rod motor.

10. A zero-gravity sofa chair, characterized in that The system includes the linkage swing arm drive structure as described in any one of claims 1-9, and also includes a skeleton part (5) for supporting the user's body. The skeleton part (5) is mounted on the swing frame (3) so that it swings forward with the swing frame (3) to an inclined state with the head lower than the feet or swings backward to a horizontal reset state.

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