Synchronous Angle Adjustment Adaptive Scissor Telescopic Massage Chair Linkage Frame System

Abstract

This invention discloses a synchronized angle-adjustable adaptive scissor-telescopic massage chair linkage frame system, comprising: a backrest assembly; a base, on which the backrest assembly is mounted; a drive mechanism disposed between the backrest assembly and the base, used to drive the backrest assembly to adjust to upright and reclining states; a leg assembly, including a connecting frame and a movable frame, the movable frame being movably connected to the connecting frame, and the connecting frame being rotatably connected to the backrest assembly; a first linkage mechanism connected between the backrest assembly and the connecting frame, used to drive the connecting frame to rise, fall, and rotate when the backrest assembly is adjusted; and a second linkage mechanism connected between the backrest assembly and the movable frame, used to drive the movable frame to extend and retract along the connecting frame when the backrest assembly drives the connecting frame to rotate. This system enables a single drive to synchronously drive the rising, falling, and rotating of the leg frame and the extension and retraction of the movable frame, reducing cost and weight, simplifying the structure, and improving the synchronization and reliability of the movement.

Description

Technical Field

[0001] This invention relates to the field of massage chair technology, specifically to a synchronous angle-adjustable adaptive scissor-telescopic massage chair linkage frame system. Background Technology

[0002] The calf lifting platforms of most mainstream massage chairs on the market currently use a push rod drive structure. Moreover, if the calf structure is required to have a telescopic function, an additional drive structure is needed. The existing solution is not only costly and heavy, but also has a complex structure, resulting in high installation and maintenance costs. It also causes many inconveniences for users, such as being heavy and difficult to move. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a synchronized angle-adjustable adaptive scissor telescopic massage chair linkage frame system, which can realize the lifting and flipping of the lower leg frame and the telescopic movement of the movable frame through a single drive, thereby reducing cost and weight, simplifying the structure, and improving the synchronization and reliability of the movement.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A synchronized angle-adjustable adaptive scissor-telescopic massage chair linkage frame system includes: Back frame assembly; A base on which the back frame assembly is mounted; A drive mechanism is disposed between the back frame assembly and the base for driving the back frame assembly to adjust to upright and reclining states; The lower leg assembly includes a connecting frame and a movable frame, the movable frame being movably connected to the connecting frame, and the connecting frame being rotatably connected to the back frame assembly; A first linkage mechanism is connected between the back frame assembly and the connecting frame, and is used to drive the connecting frame to lift, rotate and tilt when the back frame assembly is in an adjusted state. The second linkage mechanism is connected between the back frame assembly and the movable frame, and is used to drive the movable frame to extend and retract along the connecting frame when the back frame assembly drives the connecting frame to flip.

[0005] As a further improvement of the present invention, the second linkage mechanism includes a connector and a scissor link, one end of the scissor link being rotatably connected to the movable frame and the other end being rotatably connected to the connector, the connector being rotatably connected to the back frame assembly or the first linkage mechanism.

[0006] As a further improvement of the present invention, the connecting frame includes at least two slide rails located on both sides of the scissor link, and the movable frame is slidably connected to the slide rails.

[0007] As a further improvement of the present invention, the scissor lift is also connected to a movable member, the two ends of which cooperate with the slide rail, and the scissor lift is rotatably connected to the movable member at a position corresponding to the movable member.

[0008] As a further improvement of the present invention, a ball head is provided at one end of the scissor link that is connected to the connector, and the connector and the scissor link are rotatably connected through the ball head.

[0009] As a further improvement of the present invention, when the lower leg assembly is retracted into place, the movable frame retracts and is stored at a negative angle with the vertical direction.

[0010] As a further improvement of the present invention, the driving mechanism is an electric push rod or an electric cylinder.

[0011] As a further improvement of the present invention, the base is a multi-legged support base.

[0012] As a further improvement of the present invention, when the driving mechanism drives the back frame assembly to adjust its posture, the second linkage mechanism is rotatably connected to the back frame assembly or the first linkage mechanism through the connector, so as to convert the posture change of the back frame assembly into the extension and retraction of the scissor link, thereby driving the movable frame to extend and retract along the connecting frame.

[0013] The beneficial effects of this invention are as follows: by using a single drive source in conjunction with the linkage of the first linkage mechanism and the second linkage mechanism, the angle adjustment of the back frame can synchronously drive the lifting and tilting of the lower leg frame and the telescopic movement of the movable frame, eliminating the need for independent telescopic drive, realizing single drive to drive multi-degree-of-freedom compound motion, reducing costs, lightening weight, simplifying structure, improving synchronization and reliability, and enabling negative angle storage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the massage chair in its upright position according to the present invention; Figure 2 This is a three-dimensional schematic diagram of the massage chair in the reclining state according to the present invention; Figure 3 This is a schematic diagram of the massage chair in its reclining state according to the present invention; Figure 4 This is a three-dimensional structural diagram of the lower leg assembly of the present invention (retracted). Figure 5 This is a three-dimensional structural diagram (extended) of the lower leg component of the present invention; Figure 6 for Figure 3 Enlarged view of part A in the image.

[0015] Reference numerals: 1. Back frame assembly; 2. Base; 3. Drive mechanism; 4. Lower leg assembly; 41. Connecting frame; 411. Slide rail; 42. Movable frame; 5. First linkage mechanism; 6. Second linkage mechanism; 61. Connector; 62. Scissor link; 621. Movable part; 622. Ball head. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0017] Reference Figure 1-6 As shown, this embodiment of a synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system includes: Backrest assembly 1; Base 2, back frame assembly 1 is mounted on base 2; The drive mechanism 3 is located between the back frame assembly 1 and the base 2, and is used to drive the back frame assembly 1 to adjust to the upright and reclining states. Lower leg assembly 4 includes a connecting frame 41 and a movable frame 42. The movable frame 42 is movably connected to the connecting frame 41, and the connecting frame 41 is rotatably connected to the back frame assembly 1. The first linkage mechanism 5 is connected between the back frame assembly 1 and the connecting frame 41, and is used to drive the connecting frame 41 to lift, rotate and tilt when the back frame assembly 1 is in the adjusted state. The second linkage mechanism 6 is connected between the back frame assembly 1 and the movable frame 42, and is used to drive the movable frame 42 to extend and retract along the connecting frame 41 when the back frame assembly 1 drives the connecting frame 41 to flip.

[0018] The first linkage mechanism 5, as shown in the figure, is composed of multiple linkages. When the back frame assembly 1 adjusts its posture, the linkage swings with the back frame assembly 1. The swing of the linkage drives the connecting frame 41 to move upward and forward in an arc relative to the back frame assembly 1, thereby realizing the lifting and flipping of the connecting frame 41.

[0019] In use, the drive mechanism 3 drives the back frame assembly 1 to adjust to upright and reclining positions on the base 2. During the adjustment of the back frame assembly 1, the connecting rod of the first linkage mechanism 5 swings with the back frame assembly 1. Through the rotational connection between the connecting rod and the connecting frame 41, the connecting frame 41 is raised, lowered, and rotated relative to the back frame assembly 1, causing the lower leg assembly 4 to rise, lower, and rotate as a whole. At the same time, the second linkage mechanism 6 is driven by the back frame assembly 1, causing the movable frame 42 to extend and retract along the connecting frame 41, so that the lower leg assembly 4 can extend and retract while raising, lowering, and rotating. Since both the first linkage mechanism 5 and the second linkage mechanism 6 are driven by the single motion input of the posture adjustment of the back frame assembly 1, the raising, lowering, and rotating of the lower leg frame and the extension and retraction of the movable frame 42 are linked and naturally synchronized, without the need for a separate drive structure for the extension and retraction action. Therefore, this embodiment can achieve synchronous adaptive raising, lowering, and rotating of the lower leg frame and extension and retraction under a single drive source, thereby reducing the overall cost, reducing the overall weight, simplifying the structure, reducing installation and maintenance, and improving the synchronization and reliability of the movement.

[0020] In order to achieve reliable transmission of the second linkage mechanism 6, in one optional embodiment, the second linkage mechanism 6 includes a connector 61 and a scissor link 62. One end of the scissor link 62 is rotatably connected to the movable frame 42, and the other end is rotatably connected to the connector 61. The connector 61 is rotatably connected to the back frame assembly 1 or the first linkage mechanism 5.

[0021] Among them, the scissor link 62 is a scissor telescopic link mechanism, which is composed of multiple links arranged in a cross manner and hinged at the intersection. It can achieve the extension and contraction of the overall length through the relative rotation between the links.

[0022] One end of the connector 61 is rotatably connected to the back frame assembly 1 or the first linkage mechanism 5, and the other end of the connector 61 is rotatably connected to the scissor link 62. When the back frame assembly 1 adjusts its posture, the connector 61 swings around its rotational connection point with the back frame assembly 1 or the first linkage mechanism 5, thereby driving the scissor link 62 to extend and retract.

[0023] When the back frame assembly 1 adjusts its posture, the connecting piece 61 swings with the back frame assembly 1 or the first linkage mechanism 5. Through the rotational connection between the connecting piece 61 and the scissor link 62, the swinging motion of the back frame assembly 1 is converted into the extension and retraction motion of the scissor link 62. In turn, the extension and retraction of the movable frame 42 is driven by the rotational connection between the scissor link 62 and the movable frame 42. As a transmission component with variable length, the scissor link 62 can achieve a large extension and retraction stroke within a limited space.

[0024] In order to ensure the stability of the telescopic movement of the movable frame 42, in a specific structure, the connecting frame 41 includes at least two slide rails 411 located on both sides of the scissor link 62, and the movable frame 42 is slidably connected to the slide rails 411.

[0025] When the scissor lift linkage 62 extends or retracts, the movable frame 42 slides along the slide rail 411 on the connecting frame 41. The slide rail 411 restricts the movement of the movable frame 42 to linear extension and retraction along the connecting frame 41, preventing the movable frame 42 from swaying during the extension and retraction process. The two slide rails 411 are located on both sides of the scissor lift linkage 62, providing symmetrical support and guidance for the movable frame 42, further improving the stability of the extension and retraction process.

[0026] To further ensure the stability of the scissor lift linkage 62 during its extension and retraction, the following optimization method can be selected: the scissor lift linkage 62 is also connected to a movable part 621, the two ends of which cooperate with the slide rail 411, and the scissor lift linkage 62 is rotatably connected to the movable part 621 at the position corresponding to the movable part 621.

[0027] When the scissor lift linkage 62 extends or retracts, the movable member 621 moves with it. Both ends of the movable member 621 slide along the slide rail 411, providing guidance and support to the middle of the scissor lift linkage 62 and preventing twisting or swaying during extension or retraction. The scissor lift linkage 62 is rotatably connected to the movable member 621 at its corresponding position, allowing the movable member 621 to adapt to the rotation required for angular changes during extension or retraction of the scissor lift linkage 62.

[0028] In order to accommodate the angle changes during the movement of the scissor link 62, in one optional scheme, a ball head 622 is provided at the end of the scissor link 62 that is connected to the connector 61, and the connector 61 and the scissor link 62 are rotatably connected through the ball head 622.

[0029] The ball head 622 provides omnidirectional rotation capability, allowing the scissor link 62 and the connector 61 to rotate freely within a certain angle range, thereby allowing the scissor link 62 and the connector 61 to rotate relative to each other as the connecting frame 41 flips.

[0030] To avoid interference with the ground when the lower leg assembly 4 retracts, in one specific structure, when the lower leg assembly 4 retracts into place, the movable frame 42 retracts and is stored at a negative angle to the vertical direction.

[0031] In this context, "negative angle storage" refers to the movable frame 42 being positioned below the connecting frame 41 in its stored state, tilted downwards relative to the vertical direction towards the backrest assembly 1. When the lower leg assembly 4 is retracted into place, the movable frame 42 retracts and forms a negative angle storage with the vertical direction, placing the movable frame 42 below the connecting frame 41 and tilting it downwards, reducing storage space and expanding the applicability of the massage chair.

[0032] In order to achieve stable linear drive of the drive mechanism 3, in one optional scheme, the drive mechanism 3 is an electric push rod or an electric cylinder.

[0033] Electric push rods or electric cylinders can output stable and controllable linear motion, driving the back frame assembly 1 to smoothly adjust between upright and reclining states, facilitating electronic control integration and posture adjustment.

[0034] To improve the overall stability of the machine, in one specific structure, the base 2 is a multi-legged support base 2.

[0035] The multi-leg support base 2 provides multi-directional stable support through multiple support legs, improving the overall anti-tipping ability of the massage chair and ensuring its stability in both upright and reclining positions. Specifically, each leg can also be equipped with casters for easy movement.

[0036] Furthermore, when the drive mechanism 3 drives the back frame assembly 1 to adjust its posture, the second linkage mechanism 6 is rotatably connected to the back frame assembly 1 or the first linkage mechanism 5 through the connector 61, converting the posture change of the back frame assembly 1 into the extension and retraction of the scissor link 62, thereby driving the movable frame 42 to extend and retract along the connecting frame 41.

[0037] When the drive mechanism 3 drives the back frame assembly 1 to adjust its posture, the posture change of the back frame assembly 1 is transmitted to the second linkage mechanism 6 through the rotational connection between the connector 61 and the back frame assembly 1 or the first linkage mechanism 5. The connector 61 swings around its rotational connection point with the back frame assembly 1 or the first linkage mechanism 5, which is then converted into the extension and retraction motion of the scissor link 62. When the scissor link 62 extends and retracts, it drives the movable frame 42 to extend and retract along the connecting frame 41.

[0038] In summary, the working principle of the present invention is as follows: the drive mechanism 3 drives the back frame assembly 1 to adjust to an upright and reclining state on the base 2; when the back frame assembly 1 is adjusted, the connecting rod of the first linkage mechanism 5 swings with the back frame assembly 1, driving the connecting frame 41 to rise and fall and rotate, so that the lower leg assembly 4 as a whole rises and falls and rotates accordingly; at the same time, the second linkage mechanism 6 is rotatably connected to the back frame assembly 1 or the first linkage mechanism 5 through the connecting member 61, converting the posture change of the back frame assembly 1 into the extension and retraction of the scissor link 62. When the scissor link 62 extends and retracts, the movable frame 42 slides along the slide rails 411 on both sides of the connecting frame 41, realizing the extension and retraction of the movable frame 42 along the connecting frame 41; wherein, the scissor link 62 is a scissor-type telescopic linkage mechanism, and the extension and retraction stability is ensured by the cooperation of the movable member 621 and the slide rail 411; when the lower leg assembly 4 is retracted to the position, the movable frame 42 retracts and forms a negative angle with the vertical direction, the movable frame 42 is located below the connecting frame 41 and tilts to one side of the back frame assembly 1 relative to the vertical direction. Throughout the process, the linear motion of a single drive source is transformed into two motions—the lifting and tilting of the lower leg frame and the extension and retraction of the movable frame 42—through the linkage of the first linkage mechanism 5 and the second linkage mechanism 6. This achieves multi-degree-of-freedom composite motion with a single drive, reducing cost and weight, simplifying the structure, and improving synchronization and reliability.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A synchronous angle-adjustable adaptive scissor-telescopic massage chair linkage frame system, characterized in that, include: Back frame assembly (1); The base (2) is on which the back frame assembly (1) is mounted; A drive mechanism (3) is disposed between the back frame assembly (1) and the base (2) for driving the back frame assembly (1) to adjust to upright and reclining states; Lower leg assembly (4), the lower leg assembly (4) includes a connecting frame (41) and a movable frame (42), the movable frame (42) is movably connected to the connecting frame (41), and the connecting frame (41) is rotatably connected to the back frame assembly (1); The first linkage mechanism (5) is connected between the back frame assembly (1) and the connecting frame (41) and is used to drive the connecting frame (41) to lift, rotate and tilt when the back frame assembly (1) is in the adjustment state. The second linkage mechanism (6) is connected between the back frame assembly (1) and the movable frame (42) and is used to drive the movable frame (42) to extend and retract along the connecting frame (41) when the back frame assembly (1) drives the connecting frame (41) to flip.

2. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 1, characterized in that, The second linkage mechanism (6) includes a connector (61) and a scissor link (62). One end of the scissor link (62) is rotatably connected to the movable frame (42), and the other end is rotatably connected to the connector (61). The connector (61) is rotatably connected to the back frame assembly (1) or the first linkage mechanism (5).

3. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 2, characterized in that, The connecting frame (41) includes at least two slide rails (411) located on both sides of the scissor link (62), and the movable frame (42) is slidably connected to the slide rails (411).

4. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 3, characterized in that, The scissor link (62) is also connected to a movable part (621), the two ends of which cooperate with the slide rail (411), and the scissor link (62) is rotatably connected to the movable part (621) at the position corresponding to the movable part (621).

5. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 2, characterized in that, The scissor link (62) is connected to the connector (61) at one end with a ball head (622), and the connector (61) and the scissor link (62) are rotatably connected through the ball head (622).

6. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 1, characterized in that, When the lower leg assembly (4) is retracted into place, the movable frame (42) retracts and is stored at a negative angle to the vertical direction.

7. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 1, characterized in that, The drive mechanism (3) is an electric push rod or an electric cylinder.

8. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 1, characterized in that, The base (2) is a multi-leg support base (2).

9. The synchronous angle-adjusting adaptive scissor-telescopic massage chair linkage frame system according to claim 2, characterized in that, When the drive mechanism (3) drives the back frame assembly (1) to adjust its posture, the second linkage mechanism (6) is rotatably connected to the back frame assembly (1) or the first linkage mechanism (5) through the connector (61), and converts the posture change of the back frame assembly (1) into the extension and retraction of the scissor link (62), thereby driving the movable frame (42) to extend and retract along the connecting frame (41).

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