Massage chair and angle adjusting mechanism thereof

Abstract

The present application relates to a kind of massage chair and its angle adjusting mechanism, the angle adjusting mechanism includes multi-link mechanism, jacking drive device and foot support part support linkage mechanism, multi-link mechanism is respectively rotatably connected with seat part and foot support part;Jacking drive device first end is rotatably connected with support frame, jacking drive device second end is rotatably connected with multi-link mechanism, to make multi-link mechanism with the deformation of jacking drive device stretch out and retract;Foot support part support linkage mechanism is rotatably connected with support frame and foot support part respectively, foot support part support linkage mechanism is used to be unfolded to promote foot support part when jacking drive device stretches out, so that the included angle between foot support part and seat part is larger;Above-mentioned angle adjusting mechanism is matched with jacking drive device by multi-link mechanism and foot support part support linkage mechanism, only rely on one jacking drive device can realize backrest part inclination adjustment and foot support part position adjustment, so as to be able to reduce the cost and weight of the massage chair using the angle adjusting mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smart home, in particular to a massage chair and an angle adjusting mechanism thereof. BACKGROUND

[0002] For people who work and study for a long time, using a massage chair to massage can make blood circulation unobstructed, improve back pain and prevent illness, and also can improve sleep quality and relieve whole body fatigue. The existing massage chair can generally change posture, so as to be used by a user in a sitting or lying state to meet the needs of the user. When changing from the sitting state to the lying state, the existing massage chair needs to use two driving devices, one for folding and extending the foot support part of the massage chair relative to the seat part of the massage chair, and the other for adjusting the inclination angle of the seat part and the backrest part of the massage chair. Such a double driving device structure increases the cost and weight of the massage chair. SUMMARY

[0003] A first object of the present application is to provide an angle adjusting mechanism for a massage chair to reduce the cost and weight of the massage chair.

[0004] A second object of the present application is to provide a massage chair based on the above angle adjusting mechanism.

[0005] To achieve the above objects, the present application provides the following technical solutions:

[0006] An angle adjusting mechanism for a massage chair, the massage chair comprising a support frame, a seat part, a backrest part and a foot support part, the seat part being rotatably arranged on the support frame, the backrest part being connected to one end of the seat part, the foot support part being rotatably connected to the other end of the seat part, the angle adjusting mechanism comprising:

[0007] A multi-link mechanism, the multi-link mechanism being rotatably connected with the seat part and the foot support part respectively;

[0008] A jacking driving device, a first end of the jacking driving device being rotatably connected with the support frame, a second end of the jacking driving device being rotatably connected with the multi-link mechanism, so that the multi-link mechanism deforms with the extension and retraction of the jacking driving device;

[0009] A foot support part support link mechanism, the foot support part support link mechanism being rotatably connected with the support frame and the foot support part respectively, the foot support part support link mechanism being used to unfold to push the foot support part to rotate relative to the seat part when the jacking driving device extends, so that the included angle between the foot support part and the seat part becomes larger.

[0010] Optionally, the multi-link mechanism comprises a first swing link, a second swing link and a support link, a first end of the first swing link and a first end of the second swing link are rotatably connected to the seat part at a position spaced from each other, a first end of the support link is rotatably connected to a second end of the first swing link, a second end of the support link is rotatably connected to the foot rest part, a second end of the second swing link is rotatably connected to the support link at a position close to the second end of the support link, the first swing link, the second swing link and the support link constitute a three-link mechanism.

[0011] Optionally, the multi-link mechanism comprises two groups of the three-link mechanism arranged symmetrically, an intermediate connecting link is connected between two first swing links of the two groups of the three-link mechanism, and a second end of the lifting drive device is rotatably connected to the intermediate connecting link.

[0012] Optionally, the seat part is provided with a limiting seat for limiting the intermediate connecting link when the lifting drive device is retracted.

[0013] Optionally, the foot rest part support link mechanism comprises a first link, a second link, a third link and a fourth link, the first link, the second link and the third link are rotatably connected in sequence, one end of the first link away from the second link is rotatably connected to the support frame, one end of the third link away from the second link is rotatably connected to the multi-link mechanism, and two ends of the fourth link are rotatably connected to the third link and the foot rest part respectively.

[0014] Optionally, one end of the third link away from the second link, a first end of the support link and a second end of the first swing link are rotatably connected at one place.

[0015] Optionally, the third link comprises a first link body and a second link body fixedly connected in parallel, one end of the first link body is rotatably connected to the second link, the other end of the first link body is rotatably connected at one place with the first end of the support link and the second end of the first swing link, and two ends of the fourth link are rotatably connected to the second link body and the foot rest part respectively.

[0016] Optionally, the second swing link is provided with an avoiding groove for avoiding the seat part.

[0017] Optionally, the lifting drive device is a piston cylinder or an electric cylinder.

[0018] A massage chair comprising the angle adjusting mechanism according to any one of the above.

[0019] From the above technical scheme can be seen, the present application discloses a kind of angle adjusting mechanism for massage chair, the massage chair includes support frame, seat part, backrest part and foot support part, seat part is rotatably arranged in support frame, backrest part is connected to one end of seat part, foot support part is rotatably connected to the other end of seat part, angle adjusting mechanism includes multi-link mechanism, jacking drive device and foot support part support linkage mechanism, wherein, multi-link mechanism is rotatably connected with seat part and foot support part respectively;First end of jacking drive device is rotatably connected with support frame, second end of jacking drive device is rotatably connected with multi-link mechanism, so that multi-link mechanism deforms with the extension and contraction of jacking drive device;Foot support part support linkage mechanism is rotatably connected with support frame and foot support part respectively, foot support part support linkage mechanism is used to unfold to push foot support part to rotate relative to seat part when jacking drive device extends, so that the included angle between foot support part and seat part becomes larger;In initial state, jacking drive device is retracted, multi-link mechanism and foot support part support linkage mechanism are all in folded state, foot support part is in the state of being retracted relative to seat part, so that angle adjusting mechanism is in sitting posture, when it is needed to adjust from sitting posture to lying posture, jacking drive device extends, drives seat part to rotate relative to support frame, makes backrest part rotate towards ground direction, simultaneously drives multi-link mechanism and foot support part support linkage mechanism to unfold, under the joint action of multi-link mechanism and foot support part support linkage mechanism, the included angle between foot support part and seat part becomes larger, so that angle adjusting mechanism becomes lying posture;Therefore, the above-mentioned angle adjusting mechanism can realize the linkage of foot support part and seat part by cooperating with jacking drive device through multi-link mechanism and foot support part support linkage mechanism, and can realize backrest part inclination adjustment and foot support part position adjustment by relying on only one jacking drive device, so as to reduce the cost and weight of the massage chair using the angle adjusting mechanism.

[0020] The present application also discloses a kind of massage chair, the massage chair uses the angle adjusting mechanism described above, since the massage chair uses the angle adjusting mechanism described above, therefore the massage chair should have the same beneficial effects as the angle adjusting mechanism, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating laborious work.

[0022] Figure 1 The structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in sitting posture;

[0023] Figure 2A structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in a lying position from one perspective;

[0024] Figure 3 A structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in a lying position from another perspective.

[0025] Wherein:

[0026] 1 is a support frame; 2 is a seat part; 3 is a backrest part; 4 is a foot support part; 5 is a foot support support rod; 6 is a connecting lug plate; 7 is a multi-link mechanism; 701 is a first swing rod; 702 is a second swing rod; 703 is a support rod; 8 is a jacking driving device; 9 is a foot support part support link mechanism; 901 is a first link; 902 is a second link; 903 is a first rod body; 904 is a second rod body; 905 is a fourth link; 10 is a limiting seat; 11 is a massage device. DETAILED DESCRIPTION

[0027] One of the cores of the present application is to provide an angle adjusting mechanism, which is designed to reduce the cost and weight of a massage chair.

[0028] Another core of the present application is to provide a massage chair based on the above angle adjusting mechanism.

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0030] Please refer to Figures 1 to 3 , Figure 1 A structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in a sitting position, Figure 2 A structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in a lying position from one perspective, Figure 3 A structure schematic view of the angle adjusting mechanism provided by the embodiment of the present application in a lying position from another perspective.

[0031] The angle adjusting mechanism provided by the embodiment of the present application is in the sitting posture in the initial state, and the lifting driving device 8 is retracted, the multi-link mechanism 7 and the foot support supporting link mechanism 9 are in the folded state, and the foot support 4 is in the folded state relative to the seat part 2, so that the angle adjusting mechanism is in the sitting posture. When it is needed to adjust from the sitting posture to the lying posture, the lifting driving device 8 is extended, the seat part 2 is driven to rotate relative to the support frame 1, the backrest part 3 is driven to rotate towards the ground, and the multi-link mechanism 7 and the foot support supporting link mechanism 9 are driven to expand. Under the joint action of the multi-link mechanism 7 and the foot support supporting link mechanism 9, the included angle between the foot support 4 and the seat part 2 is increased, so that the angle adjusting mechanism is changed to the lying posture. Therefore, the angle adjusting mechanism can realize the linkage between the foot support 4 and the seat part 2 by the cooperation of the multi-link mechanism 7, the foot support supporting link mechanism 9 and the lifting driving device 8. The inclination angle adjustment of the backrest part 3 and the position adjustment of the foot support 4 can be realized by only one lifting driving device 8, so that the cost and weight of the massage chair using the angle adjusting mechanism can be reduced.

[0032] The multi-link mechanism 7 is rotatably connected with the seat part 2 and the foot support 4, respectively. The multi-link mechanism 7 can be a two-link mechanism, a three-link mechanism or a mechanism composed of more links. The first end of the lifting driving device 8 is rotatably connected with the support frame 1, and the second end of the lifting driving device 8 is rotatably connected with the multi-link mechanism 7, so that the multi-link mechanism 7 is deformed with the extension and retraction of the lifting driving device 8. The foot support supporting link mechanism 9 is rotatably connected with the support frame 1 and the foot support 4, respectively. The foot support supporting link mechanism 9 is used to expand to push the foot support 4 to rotate relative to the seat part 2 when the lifting driving device 8 is extended, so that the included angle between the foot support 4 and the seat part 2 is increased.

[0033] It can be seen that, compared with the prior art, the angle adjusting mechanism provided by the embodiment of the present application is in the sitting posture in the initial state, the lifting driving device 8 is retracted, the multi-link mechanism 7 and the foot support supporting link mechanism 9 are in the folded state, and the foot support 4 is in the folded state relative to the seat part 2, so that the angle adjusting mechanism is in the sitting posture. When it is needed to adjust from the sitting posture to the lying posture, the lifting driving device 8 is extended, the seat part 2 is driven to rotate relative to the support frame 1, the backrest part 3 is driven to rotate towards the ground, and the multi-link mechanism 7 and the foot support supporting link mechanism 9 are driven to expand. Under the joint action of the multi-link mechanism 7 and the foot support supporting link mechanism 9, the included angle between the foot support 4 and the seat part 2 is increased, so that the angle adjusting mechanism is changed to the lying posture. Therefore, the angle adjusting mechanism can realize the linkage between the foot support 4 and the seat part 2 by the cooperation of the multi-link mechanism 7, the foot support supporting link mechanism 9 and the lifting driving device 8. The inclination angle adjustment of the backrest part 3 and the position adjustment of the foot support 4 can be realized by only one lifting driving device 8, so that the cost and weight of the massage chair using the angle adjusting mechanism can be reduced.

[0034] As a preferred, the lifting driving device 8 is a hydraulic cylinder. Figure 2 The foot support supporting link mechanism 9 is a four-link mechanism. Figure 3As shown, the multi-link mechanism 7 includes a first swing rod 701, a second swing rod 702, and a support rod 703. The first end of the first swing rod 701 and the first end of the second swing rod 702 are rotatably connected to the seat part 2 at intervals. The first end of the support rod 703 is rotatably connected to the second end of the first swing rod 701 and the second end of the support rod 703 is rotatably connected to the footrest part 4. The second end of the second swing rod 702 is rotatably connected to the support rod 703 at a position close to the second end of the support rod 703. The first swing rod 701, the second swing rod 702, and the support rod 703 constitute a three-bar linkage mechanism. The first swing rod 701 and the second swing rod 702 do not intersect each other and do not interfere with each other during the swinging process.

[0035] Furthermore, in this embodiment of the invention, the multi-link mechanism 7 includes two sets of three-link mechanisms arranged symmetrically. An intermediate connecting rod is connected between the two first swing rods 701 in the two sets of three-link mechanisms. The second end of the lifting drive device 8 is rotatably connected to the intermediate connecting rod. This symmetrical layout enables the footrest 4 to be subjected to uniform force and is less prone to jamming during rotation.

[0036] like Figures 1 to 3 As shown, the seat 2 is provided with a limiting seat 10. The limiting seat 10 is used to cooperate with the intermediate connecting rod to limit the position when the lifting drive device 8 retracts. In this way, when the angle adjustment mechanism is in a sitting position, the limiting seat 10 can abut against the intermediate connecting rod to enhance the stability of the footrest 4 in a sitting position.

[0037] As a preferred option, such as Figure 2 and Figure 3 As shown, in this embodiment of the invention, the footrest support linkage mechanism 9 includes a first link 901, a second link 902, a third link, and a fourth link 905. The first link 901, second link 902, and third link are rotatably connected in sequence. The end of the first link 901 away from the second link 902 is rotatably connected to the support frame 1. The end of the third link away from the second link 902 is rotatably connected to the multi-link mechanism 7. The two ends of the fourth link 905 are rotatably connected to the third link and the footrest 4, respectively. Figure 1 As shown, in the seated position, the first link 901, the second link 902, the third link, and the fourth link 905 are all folded in pairs. When the lifting drive device 8 extends, as shown... Figure 3 As shown, the first link 901 rotates clockwise around the connection point with the support frame 1 (at the angle shown in the figure), while the second link 902 rotates counterclockwise around the connection point with the first link 901, and simultaneously pushes the third link to rotate counterclockwise. The third link pushes the fourth link 905 to lift the foot support 4.

[0038] Furthermore, such as Figure 1 andFigure 2 As shown, the end of the third link away from the second link 902, the first end of the support rod 703, and the second end of the first swing rod 701 are rotatably connected at one point.

[0039] Preferably, in an embodiment of the present invention, such as Figure 2 As shown, the third link includes a first rod 903 and a second rod 904 that are fixedly connected side by side. One end of the first rod 903 is rotatably connected to the second link 902, and the other end of the first rod 903 is rotatably connected to the first end of the support rod 703 and the second end of the first swing rod 701. The two ends of the fourth link 905 are rotatably connected to the second rod 904 and the footrest 4, respectively. With this structure of the third link, the fourth link 905 can be connected to the footrest 4 from the middle, so that the footrest 4 is subjected to more balanced force.

[0040] like Figure 2 As shown, in this embodiment of the invention, the fourth link 905 is rotatably connected to the foot support rod 5.

[0041] To avoid interference between the second swing arm 702 and the seat part 2, which would affect the operation of the multi-link mechanism 7, in this embodiment of the invention, the second swing arm 702 is provided with a clearance groove for avoiding the seat part 2.

[0042] Preferably, in this embodiment of the invention, the lifting drive device 8 is a piston cylinder or an electric cylinder.

[0043] This invention also provides a massage chair, which includes an angle adjustment mechanism as described in the above embodiments. Since the massage chair uses the angle adjustment mechanism described in the above embodiments, the technical effects of the massage chair can be found in the above embodiments.

[0044] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0045] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0046] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0047] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0048] Hereinafter, 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.

[0049] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0050] It should also be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the article or device that includes the aforementioned element.

[0051] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An angle adjustment mechanism for a massage chair, the massage chair comprising a support frame, a seat, a backrest, and a footrest, the seat being rotatably mounted on the support frame, the backrest being connected to one end of the seat, and the footrest being rotatably connected to the other end of the seat, characterized in that... The angle adjustment mechanism includes: A multi-link mechanism, which is rotatably connected to both the seat and the footrest. The lifting drive device has a first end that is rotatably connected to the support frame and a second end that is rotatably connected to a multi-link mechanism, so that the multi-link mechanism can deform as the lifting drive device extends and retracts. The footrest support linkage mechanism is rotatably connected to the support frame and the footrest. The footrest support linkage mechanism is used to unfold when the lifting drive device extends to push the footrest to rotate relative to the seat, thereby increasing the angle between the footrest and the seat. The multi-link mechanism includes a first swing rod, a second swing rod, and a support rod. The first end of the first swing rod and the first end of the second swing rod are rotatably connected to the seat at intervals. The first end of the support rod is rotatably connected to the second end of the first swing rod. The second end of the support rod is rotatably connected to the footrest. The second end of the second swing rod is rotatably connected to the support rod near the second end of the support rod. The first swing rod, the second swing rod, and the support rod constitute a three-link mechanism. The footrest support linkage mechanism includes a first link, a second link, a third link, and a fourth link. The first link, the second link, and the third link are rotatably connected in sequence. The end of the first link away from the second link is rotatably connected to the support frame. The end of the third link away from the second link is rotatably connected to the multi-link mechanism. The two ends of the fourth link are rotatably connected to the third link and the footrest, respectively.

2. The angle adjustment mechanism according to claim 1, characterized in that, The multi-link mechanism includes two sets of three-link mechanisms arranged symmetrically. An intermediate connecting rod connects the two first swing rods in the two sets of three-link mechanisms. The second end of the lifting drive device is rotatably connected to the intermediate connecting rod.

3. The angle adjustment mechanism according to claim 2, characterized in that, The seat is equipped with a limit seat, which is used to limit the movement of the lifting drive device when it retracts, in conjunction with the intermediate connecting rod.

4. The angle adjustment mechanism according to claim 1, characterized in that, The end of the third link away from the second link, the first end of the support rod, and the second end of the first swing rod are rotatably connected at one point.

5. The angle adjustment mechanism according to claim 4, characterized in that, The third link includes a first rod and a second rod that are fixedly connected side by side. One end of the first rod is rotatably connected to the second link, and the other end of the first rod is rotatably connected to the first end of the support rod and the second end of the first swing rod. The two ends of the fourth link are rotatably connected to the second rod and the foot support, respectively.

6. The angle adjustment mechanism according to any one of claims 2-5, characterized in that, The second swing arm is equipped with a clearance groove for avoiding the seat area.

7. The angle adjustment mechanism according to any one of claims 1-5, characterized in that, The lifting drive device is a piston cylinder or an electric cylinder.

8. A massage chair, characterized in that, Includes the angle adjustment mechanism as described in any one of claims 1-7.

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