Massage sofa and functional chair frame

Abstract

The utility model discloses a massage sofa and a functional chair frame, which comprise a base, a seat frame for mounting a chair seat, a backrest mounting frame for mounting a backrest and a leg placing plate mounting frame for mounting a leg placing plate, the backrest mounting frame is mounted at the rear part of the seat frame in a manner of moving back and forth and is driven by a first driving device to move back and forth so as to adjust the sitting depth; the leg placing plate mounting frame is mounted at the front part of the seat frame in a manner of moving and overturning back and forth and is driven by a second driving device to move and rotate back and forth, so that the leg placing plate moves forwards to be lifted and moves backwards to be stored; and the seat frame is mounted above the base in a manner of moving back and forth and is driven by a seat frame driving device to move back and forth. According to the scheme, the backrest adjusting structure is additionally arranged, so that the sitting depth can be adjusted in a large range, the chair can be suitable for people with different heights and body types, sitting posture massage can be achieved, and the zero-gravity and zero-wall-leaning functions can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of furniture technology, and in particular relates to a massage sofa and a functional chair frame. Background Technology

[0002] Currently, massage sofas on the market require a certain distance when placed against a wall to prevent the backrest from hitting the wall when reclining, which significantly increases the space requirements for their use. A massage sofa with zero wall contact means that the distance between the backrest and the wall is zero when seated, and the backrest can be reclined directly when lying down.

[0003] The zero-gravity function of the massage sofa simulates the body posture of an astronaut in weightlessness in space. When the massage sofa is in zero-gravity mode, it automatically adjusts to a specific angle, raising the legs and placing the body in a near-horizontal position, while providing ample support for the back and waist. This posture redistributes the body's center of gravity, reducing pressure on the spine, waist, and legs. In a normal sitting or standing posture, the body's weight is mainly concentrated in the spine and lower limbs, and maintaining this posture for extended periods can easily lead to fatigue and discomfort. Zero gravity distributes the body's weight evenly, reducing pressure on various parts of the body, thus achieving relaxation and relieving fatigue. For people who frequently sit or stand for long periods, the zero-gravity function can effectively relieve fatigue and reduce leg swelling, lower back pain, and other problems. It also promotes blood circulation, helping the body relax and recover better, enhancing the massage's effectiveness and comfort.

[0004] Existing massage sofas generally only add massage functions to the backrest without considering the massage effect, which has great limitations. When most people are in a normal sitting position, there is a large distance between the sofa backrest and the body, making it difficult to achieve a seated massage. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a massage sofa and functional chair frame, which, by adding a backrest adjustment structure, achieves a wide range of adjustable seat depth, can adapt to people of different heights and body types, can realize seated massage, and can achieve zero gravity and zero wall-adhesion functions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A functional chair frame includes a base, a seat frame for mounting the seat, a backrest mounting bracket for mounting the backrest, and a leg rest mounting bracket for mounting the leg rest. The backrest mounting bracket is mounted at the rear of the seat frame in a forward and backward movable manner and is driven to move forward and backward by a first drive device to adjust the seat depth. The leg rest mounting bracket is mounted at the front of the seat frame in a forward and backward movable and flip-up manner and is driven to move forward and backward by a second drive device to rotate, so as to realize the leg rest moving forward to lift and moving backward to store. The seat frame is mounted above the base in a forward and backward movable manner and is driven to move forward and backward by a seat frame drive device.

[0008] Preferably, the seat frame includes seat frame side plates, a first seat frame crossbar, and a second seat frame crossbar, with the left and right seat frame side plates fixedly connected by the first and second seat frame crossbars.

[0009] Preferably, the backrest mounting frame is connected to the rear of the seat frame side plate via a first backrest connecting rod and a second backrest connecting rod. One end of the first backrest connecting rod is hinged to the backrest mounting frame, and the other end of the first backrest connecting rod is hinged to the seat frame side plate. One end of the second backrest connecting rod is hinged to the backrest mounting frame, and the other end of the second backrest connecting rod is hinged to the seat frame side plate, thereby forming a four-bar linkage mechanism with the backrest mounting frame, the first backrest connecting rod, the second backrest connecting rod, and the seat frame side plate.

[0010] Preferably, a backrest limiting member is installed on the first backrest link, which cooperates with the second backrest link to limit the forward and backward movement range of the backrest mounting bracket. This not only limits the range of motion of the backrest but also prevents the four-bar linkage from over-rotating and failing to return to its original position.

[0011] Preferably, the two left and right first backrest connecting rods are fixedly connected by a first connecting crossbar, and the first drive device is an electric push rod. The mounting part and the moving part of the first drive device are hinged to the first seat frame crossbar and the first connecting crossbar, respectively. This not only allows for direct adjustment of the seat depth, but also has a reasonable structure, short drive stroke, and low cost.

[0012] Preferably, the leg rest mounting bracket is connected to the front of the seat frame side plate via a first leg rest link, a second leg rest link, a third leg rest link, and a fourth leg rest link. One end of the first leg rest link is hinged to the leg rest mounting bracket, and the other end of the first leg rest link is hinged to one end of the fourth leg rest link. The other end of the fourth leg rest link is hinged to the seat frame side plate. One end of the second leg rest link is hinged to the leg rest mounting bracket, and the other end of the second leg rest link is hinged to one end of the third leg rest link. The other end of the third leg rest link is hinged to the seat frame side plate. The first leg rest link and the third leg rest link are hinged together, thus forming a double four-bar linkage mechanism.

[0013] Preferably, a leg rest limiting member is installed on the third leg rest link, which cooperates with the first leg rest link to restrict the range of motion of the leg rest mounting bracket.

[0014] Preferably, the two fourth leg rest links on the left and right are fixedly connected by a second connecting crossbar. The second drive device is an electric push rod, and the mounting part and the moving part of the second drive device are hinged to the first seat frame crossbar and the second connecting crossbar, respectively. This not only allows for direct drive of the leg rest plate to be raised and lowered, but also has a reasonable structure, short drive stroke, and low cost.

[0015] Preferably, the seat frame is connected to the base via a seat frame connecting rod and a seat frame track. The lower end of the seat frame connecting rod is hinged to the front of the base, and the upper end of the seat frame connecting rod is hinged to the side plate of the seat frame. A roller is installed at the rear of the seat frame, and the roller moves within the seat frame track, which is fixedly mounted on the base.

[0016] Preferably, a seat frame limiting component is installed on the seat frame connecting rod, which cooperates with the seat frame connecting rod to restrict the front and rear movement range of the seat frame.

[0017] Preferably, the seat frame drive device is an electric push rod, and the mounting part and the moving part of the seat frame drive device are respectively hinged to the first seat frame crossbar and the base.

[0018] Preferably, the seat frame track is horizontally mounted on the base.

[0019] A massage sofa includes a functional chair frame as described above, with a sofa backrest fixedly mounted on a backrest mounting frame, and a massage track and massage mechanism mounted on the sofa backrest; a leg rest fixedly mounted on a leg rest mounting frame, and a sofa seat fixedly mounted on a seat frame.

[0020] Preferably, the massage track uses a curved guide rail to enhance the massage effect on key parts of the human body.

[0021] This utility model, by adopting the above technical solution and adding a backrest adjustment structure, achieves a wide range of adjustable seat depth, adapting to people of different heights and body types. It enables seated massage and provides zero-gravity and zero-wall-adhesion functions. During seat depth adjustment, the backrest is raised to further increase the neck massage area and enhance the massage effect. Even at the lowest seat depth, zero-gravity and zero-wall-adhesion functions are still achieved, creating a true massage sofa that breaks through the limitations of traditional massage sofas, meets the needs of all body types, and improves the massage effect. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model (three-dimensional view, without a frame).

[0024] Figure 2 This is a schematic diagram of the structure of this utility model (side view, without frame).

[0025] Figure 3 This is a structural schematic diagram (one of the perspective views) of the chair frame of this utility model.

[0026] Figure 4 This is a structural schematic diagram of the chair frame of this utility model (two perspective views).

[0027] Among them, 10. Backrest; 11. Massage mechanism; 12. Massage track; 13. Backrest mounting bracket; 14. First backrest connecting rod; 15. Backrest limiting component; 16. Second backrest connecting rod; 17. First connecting crossbar; 18. First drive device; 20. Seat frame side plate; 21. First seat frame crossbar; 22. Seat frame drive device; 23. Second seat frame crossbar; 24. Seat frame track; 25. Seat frame connecting rod; 26. Seat frame limiting component; 30. Base; 40. Leg rest mounting bracket; 41. First leg rest connecting rod; 42. Second leg rest connecting rod; 43. Leg rest limiting component; 44. Third leg rest connecting rod; 45. Fourth leg rest connecting rod; 46. Second connecting crossbar; 47. Second drive device. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] 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, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Example 1:

[0037] like Figures 1 to 4The illustrated functional chair frame includes a base 30, a seat frame for mounting the seat, a backrest mounting bracket 13 for mounting the backrest, and a leg rest mounting bracket 40 for mounting the leg rest. The backrest mounting bracket 13 is mounted on the rear of the seat frame in a forward and backward movable manner and is driven to move forward and backward by a first drive device 18 to adjust the seat depth. The leg rest mounting bracket 40 is mounted on the front of the seat frame in a forward and backward movable and flip-up manner and is driven to move forward and backward by a second drive device 47 to rotate so that the leg rest can move forward to lift and backward to store. The seat frame is mounted on the base 30 in a forward and backward movable manner and is driven to move forward and backward by a seat frame drive device 22.

[0038] In this embodiment, the seat frame includes a seat frame side plate 20, a first seat frame crossbar 21, and a second seat frame crossbar 23. The left and right seat frame side plates 20 are fixedly connected by the first seat frame crossbar 21 and the second seat frame crossbar 23.

[0039] In this preferred embodiment, the backrest mounting frame 13 is connected to the rear of the seat frame side plate 20 via a first backrest connecting rod 14 and a second backrest connecting rod 16. One end of the first backrest connecting rod 14 is hinged to the backrest mounting frame 13, and the other end of the first backrest connecting rod 14 is hinged to the seat frame side plate 20. One end of the second backrest connecting rod 16 is hinged to the backrest mounting frame 13, and the other end of the second backrest connecting rod 16 is hinged to the seat frame side plate 20. Thus, the backrest mounting frame 13, the first backrest connecting rod 14, the second backrest connecting rod 16, and the seat frame side plate 20 form a four-bar linkage mechanism.

[0040] In this preferred embodiment, a backrest limiting member 15 is installed on the first backrest link 14. The backrest limiting member 15 cooperates with the second backrest link 16 to restrict the forward and backward movement range of the backrest mounting frame 13. This not only limits the range of motion of the backrest but also prevents the four-bar linkage from over-rotating and failing to return to its original position.

[0041] In this preferred embodiment, the two left and right first backrest connecting rods 14 are fixedly connected by a first connecting crossbar 17, and the first driving device 18 is an electric push rod. The mounting part and the moving part of the first driving device 18 are respectively hinged to the first seat frame crossbar 21 and the first connecting crossbar 17. This not only allows for direct adjustment of the seat depth, but also has a reasonable structure, short driving stroke, and low cost.

[0042] In this embodiment, the leg rest mounting bracket 40 is connected to the front of the seat frame side plate 20 via a first leg rest link 41, a second leg rest link 42, a third leg rest link 44, and a fourth leg rest link 45. One end of the first leg rest link 41 is hinged to the leg rest mounting bracket 40, and the other end of the first leg rest link 41 is hinged to one end of the fourth leg rest link 45. The other end of the fourth leg rest link 45 is hinged to the seat frame side plate 20. One end of the second leg rest link 42 is hinged to the leg rest mounting bracket 40, and the other end of the second leg rest link 42 is hinged to one end of the third leg rest link 44. The other end of the third leg rest link 44 is hinged to the seat frame side plate 20. The first leg rest link 41 and the third leg rest link 44 are hinged together, thereby forming a double four-bar linkage mechanism.

[0043] In this preferred embodiment, a leg support limiting member 43 is installed on the third leg support link 44. The leg support limiting member 43 cooperates with the first leg support link 41 to block and limit the range of motion of the leg support plate mounting frame 40.

[0044] In this preferred embodiment, the two fourth leg support rods 45 on the left and right sides are fixedly connected by the second connecting crossbar 46. The second driving device 47 is an electric push rod, and the mounting part and the moving part of the second driving device 47 are respectively hinged to the first seat frame crossbar 21 and the second connecting crossbar 46. This not only allows direct driving of the leg support plate to lift and retract, but also has a reasonable structure, short driving stroke, and low cost.

[0045] In this preferred embodiment, the seat frame is connected to the base 30 via a seat frame connecting rod 25 and a seat frame track 24. The lower end of the seat frame connecting rod 25 is hinged to the front of the base 30, and the upper end of the seat frame connecting rod 25 is hinged to the seat frame side plate 20. A roller is installed at the rear of the seat frame, and the roller moves within the seat frame track 24, which is fixedly mounted on the base 30. A seat frame limiting member 26 is installed on the seat frame connecting rod 25, and the limiting member 26 engages with the seat frame connecting rod 25 to restrict the front-to-back movement range of the seat frame. The seat frame driving device 22 is an electric push rod, and its mounting part and moving part are hinged to the first seat frame crossbar 21 and the base 30, respectively. The seat frame track 24 is horizontally mounted on the base 30.

[0046] A massage sofa includes a functional chair frame as described above. The sofa backrest 10 is fixedly installed on the backrest mounting frame 13, and a massage track 12 and a massage mechanism 11 are installed on the sofa backrest 10. The leg rest is fixedly installed on the leg rest mounting frame 40, and the sofa seat is fixedly installed on the seat frame.

[0047] In this preferred embodiment, the massage track is a curved guide rail to enhance the massage effect on key parts of the human body.

[0048] In this way, the seat frame drive device 22 drives the seat frame and the sofa seat board on it to move back and forth and tilt to realize the conversion between sitting and lying positions and the zero-wall zero-gravity function; when sitting, the first drive device 18 drives the sofa back to move back and forth to adjust the sofa depth, so that the massage core fits the human body more closely and realizes sitting massage and a good massage effect; when lying down, the first drive device 18 drives the sofa back to move back and forth to adjust the sofa reclining angle, so that users of different heights and body types can enjoy a comfortable posture and zero-gravity function, achieving a good massage effect; the second drive device 47 drives the leg rest to lift and retract to cooperate with the conversion between sitting and lying positions.

[0049] Compared to traditional massage sofas, the massage sofa in this embodiment has the following advantages:

[0050] 1. Traditional massage sofas only add massage to the backrest without considering the massage effect, which has significant limitations. When most people are in a normal sitting position, there is a large distance between the sofa backrest and the body, making it difficult to easily achieve a seated massage. This embodiment of the massage sofa adds a backrest adjustment structure, allowing for a wide range of seat depth adjustment to accommodate people of different heights and body types. It also enables seated massage and provides zero-gravity, zero-wall-adhesion functionality.

[0051] 2. During the seat depth adjustment, the backrest is raised slightly to further increase the neck massage area and enhance the massage effect.

[0052] 3. Even in the minimum seat depth state, it can achieve zero gravity and zero wall-leaning function.

[0053] 4. Curved guide rails are used to enhance the massage effect on key parts of the body.

[0054] In the description of this specification, the terms "one embodiment," "some embodiments," "one implementation," "specific implementation," "other implementation," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment, implementation, or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described above can also be combined in any suitable manner in one or more embodiments, implementations, or examples. The technical solutions described in this utility model also include technical solutions formed by any one or more specific features, structures, materials, or characteristics described above, either individually or in combination.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, alterations, deletions of some features, additions of features, or recombinations of features to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the innovative principles of the present invention shall still fall within the scope of the technical solutions of the present invention.

Claims

1. A functional chair frame comprising a base (30), a seat frame for mounting a seat, a backrest mounting frame (13) for mounting a backrest and a leg rest mounting frame (40) for mounting a leg rest, characterized in that, The backrest mounting frame (13) is mounted on the rear of the seat frame in a forward and backward movable manner and is driven by the first driving device (18) to move forward and backward to adjust the seat depth, the leg rest mounting frame (40) is mounted on the front of the seat frame in a forward and backward movable and rotating manner and is driven by the second driving device (47) to move forward and backward to rotate to realize the leg rest mounting frame (40) moving forward and lifting up and moving backward and storing; the seat frame is mounted above the base (30) in a forward and backward movable manner and is driven by the seat frame driving device (22) to move forward and backward.

2. A functional chair frame according to claim 1, characterized in that The seat frame comprises seat frame side plates (20), a first seat frame cross rod (21) and a second seat frame cross rod (23), and the left and right seat frame side plates (20) are fixedly connected through the first seat frame cross rod (21) and the second seat frame cross rod (23).

3. A functional chair frame according to claim 2, characterized in that The backrest mounting frame (13) is connected with the rear of the seat frame side plate (20) through the first backrest connecting rod (14) and the second backrest connecting rod (16), one end of the first backrest connecting rod (14) is hinged with the backrest mounting frame (13), the other end of the first backrest connecting rod (14) is hinged with the seat frame side plate (20), one end of the second backrest connecting rod (16) is hinged with the backrest mounting frame (13), and the other end of the second backrest connecting rod (16) is hinged with the seat frame side plate (20), so that the backrest mounting frame (13), the first backrest connecting rod (14), the second backrest connecting rod (16) and the seat frame side plate (20) form a four-connecting-rod mechanism.

4. A functional chair frame according to claim 3, characterized in that The first backrest connecting rod (14) is provided with a backrest limiting piece (15), and the backrest limiting piece (15) is blocked and matched with the second backrest connecting rod (16) to limit the forward and backward movement range of the backrest mounting frame (13).

5. A functional chair frame according to claim 3, characterized in that The left and right first backrest connecting rods (14) are fixedly connected through the first connecting cross rod (17), the first driving device (18) is an electric push rod, and the mounting part and the moving part of the first driving device (18) are hinged with the first seat frame cross rod (21) and the first connecting cross rod (17) respectively.

6. A functional chair frame according to claim 2, characterized in that The leg rest mounting frame (40) is connected with the front of the seat frame side plate (20) through the first leg rest connecting rod (41), the second leg rest connecting rod (42), the third leg rest connecting rod (44) and the fourth leg rest connecting rod (45), one end of the first leg rest connecting rod (41) is hinged with the leg rest mounting frame (40), the other end of the first leg rest connecting rod (41) is hinged with one end of the fourth leg rest connecting rod (45), the other end of the fourth leg rest connecting rod (45) is hinged with the seat frame side plate (20), one end of the second leg rest connecting rod (42) is hinged with the leg rest mounting frame (40), the other end of the second leg rest connecting rod (42) is hinged with one end of the third leg rest connecting rod (44), the other end of the third leg rest connecting rod (44) is hinged with the seat frame side plate (20), and the first leg rest connecting rod (41) and the third leg rest connecting rod (44) are hinged, so that the leg rest mounting frame (40), the first leg rest connecting rod (41), the second leg rest connecting rod (42), the third leg rest connecting rod (44) and the fourth leg rest connecting rod (45) form a double four-connecting-rod mechanism.

7. A functional chair frame according to claim 6, characterized in that The third leg rest connecting rod (44) is provided with a leg rest limiting part (43), which is blocked with the first leg rest connecting rod (41) to limit the range of movement of the leg rest mounting frame (40).

8. A functional chair frame according to claim 6, characterized in that The left and right fourth leg rest connecting rods (45) are fixedly connected by a second connecting cross rod (46), and the second driving device (47) is an electric push rod, the mounting part and the moving part of which are hingedly connected with the first seat frame cross rod (21) and the second connecting cross rod (46) respectively.

9. A functional chair frame according to claim 2, characterized in that The seat frame is connected with the base (30) through a seat frame connecting rod (25) and a seat frame track (24), the lower end of the seat frame connecting rod (25) is hingedly connected with the front part of the base (30), the upper end of the seat frame connecting rod (25) is hingedly connected with the seat frame side plate (20), a roller is installed on the rear part of the seat frame, the roller moves in the seat frame track (24), and the seat frame track (24) is fixedly arranged on the base (30); a seat frame limiting part (26) is installed on the seat frame connecting rod (25), which is blocked with the seat frame connecting rod (25) to limit the range of movement of the seat frame; the seat frame driving device (22) is an electric push rod, the mounting part and the moving part of which are hingedly connected with the first seat frame cross rod (21) and the base (30) respectively.

10. A massage sofa, characterized by The functional chair frame comprises a sofa backrest (10) fixedly installed on the backrest mounting frame (13), a massage track (12) and a massage core (11) installed on the sofa backrest (10), a leg rest plate fixedly installed on the leg rest plate mounting frame (40), and a sofa seat plate fixedly installed on the seat frame.

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