Massage chair mechanical executing mechanism based on multi-connecting-rod self-adaptive transmission

Abstract

The invention relates to the technical field of massage armchairs based on multi-connecting-rod self-adaptive transmission, in particular to a massage armchair mechanical executing mechanism based on multi-connecting-rod self-adaptive transmission, which comprises a bottom plate, a seat frame, a backrest, an adjusting assembly, a massager and a massager, and is characterized in that the adjusting assembly is linked with a driving assembly through a first rotating rod and a second rotating rod; a hydraulic cylinder drives a sliding block to drive a toothed plate to move, then a second rotating rod is pulled through a third rotating rod and a connecting column, stepless adjustment of the angle of the backrest is achieved, an adjusting barrel of the massager can slide and rotate along a fixing base, an adjusting column flexibly stretches out and draws back under the action of a spring, and a massage ring can adjust the height and the angle in a self-adaptive mode along with changes of the angle of the backrest. The sleeve is in sliding fit with the sleeve rod, the transverse column guides the sliding block, the adjusting process is stable without blockage, the pause feeling of a traditional structure is avoided, the massager at the front end of the seat frame can massage the legs, linkage is formed with the massager on the backrest, and main relaxed parts of the whole body are covered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of massage chairs based on multi-link adaptive transmission, in particular to a massage chair mechanical execution mechanism based on multi-link adaptive transmission. BACKGROUND

[0002] It is well known in the field of massage equipment that massage chairs are devices that achieve massage and relaxation of the back, waist, legs and other parts of the human body through built-in mechanical structures. The core function is to simulate manual massage methods such as kneading, knocking and pushing to help users relieve muscle fatigue and promote blood circulation, and is widely used in homes, clubs, offices and other scenarios.

[0003] However, the existing massage chairs have significant defects in backrest angle adjustment. Traditional adjustment structures mostly adopt fixed gear design, usually 3-5 gears, with large angle adjustment intervals, which cannot accurately match the body curves and relaxation needs of different users. For example, a user with a higher height may have a suspended waist due to insufficient backrest angle in a half-lying posture, while a user with a larger body size may not be able to fully match the backrest due to limited angle adjustment range, resulting in the massage head not being able to accurately act on the muscle group, affecting the massage effect. SUMMARY

[0004] Technical problems to be solved

[0005] In order to overcome the problem of fixed gear design of the existing massage chair mechanical execution mechanism based on multi-link adaptive transmission, the present application provides a massage chair mechanical execution mechanism based on multi-link adaptive transmission which can freely adjust the massage angle and massage position.

[0006] Technical scheme

[0007] To achieve the above purpose, the present application provides the following technical scheme: a massage chair mechanical execution mechanism based on multi-link adaptive transmission, comprising:

[0008] a bottom plate;

[0009] a seat frame fixedly arranged on the top of the bottom plate;

[0010] a backrest rotatably arranged on the side of the seat frame;

[0011] An adjusting assembly is mounted on the bottom plate, the adjusting assembly comprises adjusting rods fixedly arranged at two sides of the bottom of the backrest, first connecting seats are fixedly arranged at two sides of the bottom of the adjusting rods, first rotating rods are rotatably arranged on the first connecting seats, a support frame is fixedly arranged at the top of the bottom plate, the support frame is rotatably arranged at one end of the first rotating rods, a second rotating rod is rotatably arranged on the support frame and coaxially arranged with the first rotating rods, a driving assembly is fixedly arranged at the top of the bottom plate and rotatably arranged with the second rotating rod;

[0012] A massager is fixedly arranged at the top of the bottom plate and located at the front end of the seat frame.

[0013] A massage instrument is mounted on the backrest.

[0014] Preferably, the driving assembly comprises second connecting seats fixedly arranged at two sides of the seat frame, sleeves rotatably arranged on the second connecting seats, sleeve rods slidably arranged in the sleeves, connecting columns rotatably arranged between the second rotating rods, and the sleeve rods rotatably arranged with the second rotating rods.

[0015] Further, a mounting frame is fixedly arranged at the top of the bottom plate, a hydraulic cylinder is fixedly arranged on the mounting frame, a sliding block is connected to the output shaft of the hydraulic cylinder through a key, toothed plates are fixedly arranged at two sides of the top of the sliding block, tooth patterns are formed on the toothed plates, a rotating shaft is rotatably arranged on the support frame, a plurality of gears corresponding in number to the toothed plates are fixedly arranged on the rotating shaft, and the gears are adapted to the tooth patterns.

[0016] Still further, third rotating rods are fixedly arranged at two sides of the rotating shaft, the third rotating rods are located at two sides of the gears, and one end of each third rotating rod is rotatably arranged with the connecting column.

[0017] In a further scheme, a fixed block is fixedly arranged at the top of the bottom plate, a horizontal column is fixedly arranged between the fixed block and the mounting frame, and the horizontal column is slidably arranged with the sliding block.

[0018] On the basis of the foregoing scheme, the massage instrument comprises two fixed seats fixedly arranged at two sides of the backrest, adjusting cylinders rotatably arranged on the fixed seats, the adjusting cylinders being slidably arranged with the fixed seats, adjusting columns slidably arranged in the adjusting cylinders, and a plurality of massage rings fixedly arranged at the top of the adjusting columns.

[0019] Further, a cylinder is fixedly arranged between the bottoms of the adjusting barrels, a connecting barrel is rotatably arranged on the cylinder, a vertical rod is fixedly arranged at the bottom of the connecting barrel, a vertical frame is fixedly arranged at the top of the bottom plate, and the bottom of the vertical rod is rotatably arranged with the vertical frame.

[0020] Further, a circular groove is formed in the connecting barrel, a limiting plate is slidably arranged in the circular groove, the limiting plate is fixedly arranged with the adjusting column, one end of a spring is fixedly arranged at the bottom of the circular groove, and the other end of the spring is fixedly arranged with the limiting plate.

[0021] Further, a sliding column is rotatably arranged on the massage ring at the top, the top of the sliding column extends to the outside through the backrest, a first connecting frame is fixedly arranged at the top of the backrest, a first connecting rod is rotatably arranged at the top of the sliding column, a second connecting rod is rotatably arranged at the side of the first connecting rod, and one side of the second connecting rod is rotatably arranged with the first connecting frame.

[0022] Further, a straight plate is fixedly arranged at the side of the backrest, a threaded handle is threadedly arranged on the straight plate, and one end of the threaded handle is rotatably arranged with the second connecting rod through the straight plate.

[0023] Beneficial effects

[0024] The massage chair mechanical execution mechanism based on multi-link self-adaptive transmission has the beneficial effects that

[0025] 1. Backrest angle stepless adjustment, suitable for various body shapes

[0026] The adjusting assembly is linked with the driving assembly through the first rotating rod and the second rotating rod, the traditional fixed gear design is abandoned, the hydraulic cylinder drives the sliding block to move, the gear is engaged with the thread to make the rotating shaft rotate, and then the second rotating rod is pulled through the third rotating rod and the connecting column, so that the backrest angle is steplessly adjusted. Whether a person with high height needs to match the waist or a person with a large body shape needs to support the back, the body curve can be accurately matched, and the problems of suspended waist or insufficient back matching are avoided.

[0027] 2. Massage instrument position flexible adaptation, and massage precision is strengthened

[0028] The adjusting barrel of the massage instrument can slide and rotate along the fixed seat, the adjusting column can flexibly stretch and contract under the action of the spring, the connection between the connecting barrel and the vertical rod is linked, the height and angle of the massage ring can be self-adaptively adjusted according to the change of the backrest angle, the top massage ring is connected through the sliding column, the first connecting rod and the second connecting rod, the front and back positions of the massage ring can be finely adjusted by rotating the threaded handle, the massage head can accurately act on different muscle groups such as shoulders, neck, waist and back, and the pertinence of pushing and kneading techniques is improved.

[0029] 3. Multi-link transmission stabilizes, smooth operation

[0030] The sliding fit of the sleeve and the sleeve rod and the guiding of the sliding block by the cross column make the adjustment process smooth and avoid the jerk feeling of the traditional structure. The force transmission of the driving assembly is realized through rigid components such as gears and connecting rods, which responds quickly and has strong bearing capacity, and is not easy to loosen or fail even after long-term use, ensuring the stability and safety of the massage process.

[0031] 4. Multi-site cooperative massage, improve relaxation experience

[0032] The massager at the front end of the seat frame can massage the legs, and is linked with the massager on the backrest to cover the main relaxation parts of the whole body. The adjustment of each component is independent and can be cooperated, and the user can flexibly adjust the backrest angle and massage position according to their own needs, simulate personalized service of manual massage, and the effect of relieving muscle fatigue is more remarkable. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a side view structure schematic diagram of the application;

[0034] Figure 2 It is a structure schematic diagram of the vertical rod of the application;

[0035] Figure 3 It is a structure schematic diagram of the adjustment assembly of the application;

[0036] Figure 4 It is a structure schematic diagram of the driving assembly of the application;

[0037] Figure 5 It is a structure schematic diagram of the massager of the application;

[0038] Figure 6 It is a structure schematic diagram of the straight plate of the application;

[0039] Figure 7 It is a structure schematic diagram of the application Figure 6 It is a local enlarged structure schematic diagram of A in the application.

[0040] In the figure: 1, bottom plate; 2, seat frame; 3, backrest; 4, adjusting assembly; 5, adjusting rod; 6, first connecting seat; 7, first rotating rod; 8, support frame; 9, second rotating rod; 10, driving assembly; 11, massager; 12, massager; 13, second connecting seat; 14, sleeve; 15, sleeve rod; 16, connecting column; 17, mounting frame; 18, hydraulic cylinder; 19, sliding block; 20, toothed plate; 21, tooth; 22, rotating shaft; 23, gear; 24, third rotating rod; 25, fixed block; 26, cross column; 27, fixed seat; 28, adjusting cylinder; 29, adjusting column; 30, massage ring; 31, cylinder; 32, connecting cylinder; 33, vertical rod; 34, vertical frame; 35, circular groove; 36, limiting plate; 37, spring; 38, sliding column; 39, first connecting frame; 40, first connecting rod; 41, second connecting rod; 42, straight plate; 43, threaded handle. DETAILED DESCRIPTION

[0041] 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, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0042] Referring to Figures 1-7 A massage chair mechanical actuator based on multi-link self-adaptive transmission, through the cooperative design of "multi-link stepless adjustment + self-adaptive massage position adjustment", realizes the precise adaptation of the massage chair backrest 3 angle and the flexible positioning of the massage component, the core scheme is: the bottom plate 1 as the basic bearing structure, the top fixed seat frame 2 and the adjusting assembly 4, the backrest 3 is connected with the seat frame 2 through rotation, the adjusting assembly 4 realizes stepless angle adjustment of the backrest 3 by using multi-link transmission and gear 23 meshing, the massager 12 on the backrest 3 adapts to the user's body curve through the extension and rotation structure, the massager 11 at the front end of the seat frame 2 assists leg massage, each component is precisely connected through welding, bearing rotation, sliding fit and other ways, solves the problems of fixed gear adjustment and poor massage position adaptability of traditional massage chairs, and is suitable for personalized massage needs of users with different body shapes.

[0043] First, referring to Figure 2In this embodiment, the bottom plate 1 is a rectangular steel plate (Q235 material), the surface is phosphating treated for rust prevention, the bottom is fixed with rubber foot pads (Shore hardness 60A) through bolts to reduce vibration transmission during massage, the top of the bottom plate 1 is welded with a seat frame 2, the seat frame 2 is a rectangular frame structure (angle steel welding), the surface is covered with sponge and leather to form a seat area, the side surface of the seat frame 2 close to the rear end is rotationally connected with a backrest 3 through a hinge (hinge bearing), the backrest 3 is a steel plate skeleton wrapped with sponge structure, which can rotate around the hinge to adjust the angle to meet the different posture requirements of users such as sitting, half-lying and lying.

[0044] The top of the bottom plate 1 is also welded with a support frame 8 (channel steel cutting and welding) and a vertical frame 34 (round steel bending), the support frame 8 is located on both sides of the seat frame 2 for installing the rotating components of the adjusting assembly 4, the vertical frame 34 is located at the rear of the seat frame 2 to provide a fulcrum for the transmission of the massage instrument 12, the overall basic structure is rigidly connected through welding to ensure no shaking during massage.

[0045] Then, referring to Figure 3 In this embodiment, the adjusting assembly 4 is installed between the bottom plate 1 and the backrest 3, and stepless adjustment of the angle of the backrest 3 is realized through multi-link transmission, and the specific structure and cooperation are as follows:

[0046] The adjusting rod 5 and the first rotating rod 7: the adjusting rod 5 is two parallel rectangular steel pipes welded on both sides of the bottom of the backrest 3 (symmetrically distributed), the bottom of the rod body is welded with a first connecting seat 6 (steel plate stamping), the connecting seat is rotationally connected with the first rotating rod 7 through a pin shaft (with bearing), the other end of the first rotating rod 7 is rotationally connected with the support frame 8 through a pin shaft, forming a four-link basic structure of “backrest 3-adjusting rod 5-first rotating rod 7-support frame 8”, when the first rotating rod 7 rotates around the support frame 8, it can push the adjusting rod 5 to rotate the backrest 3.

[0047] The second rotating rod 9 and the driving assembly 10: the second rotating rod 9 (structure consistent with the first rotating rod 7) is rotationally connected with the support frame 8 through the same pin shaft, coaxial with the first rotating rod 7 (located on the inner side), forming a double-rod parallel structure, the end of the second rotating rod 9 away from the support frame 8 is rotationally connected with a connecting column 16 (round steel) through a pin shaft, the connecting column 16 is connected with the second rotating rods 9 on both sides respectively, forming a bridge for synchronous transmission.

[0048] The top of the bottom plate 1 is welded with a mounting frame 17 (steel plate bending), a hydraulic cylinder 18 (double-acting type) is welded on the mounting frame 17 through a flange, the piston rod of the hydraulic cylinder 18 is connected with a sliding block 19 (cast iron material) through a key, a fixed block 25 (steel plate) is welded on the top of the bottom plate 1, a cross column 26 (round steel) is welded between the fixed block 25 and the mounting frame 17, the sliding block 19 is slidably sleeved on the outside of the cross column 26 (clearance fit), ensuring that the sliding block 19 moves along a straight line (without deviation).

[0049] Two tooth plates 20 (steel plate milling teeth) are welded on the top of the sliding block 19, the surface of the tooth plate 20 is processed with a tooth pattern 21, the rotating shaft 22 (45 steel) is rotatably connected between the support frames 8 through bearings, the gear 23 (corresponding to the number of tooth plates 20) is welded on the rotating shaft 22, the gear 23 is engaged with the tooth pattern 21 of the tooth plate 20, when the hydraulic cylinder 18 drives the sliding block 19 to move along the cross column 26, the tooth plate 20 drives the gear 23 to rotate, and then the rotating shaft 22 rotates synchronously.

[0050] The third rotating rod 24 (steel pipe) is welded on both ends of the rotating shaft 22, the other end of the rod body is rotatably connected with the connecting column 16 through a pin shaft, when the rotating shaft 22 rotates, the third rotating rod 24 pushes the connecting column 16 to move, and then drives the second rotating rod 9 to rotate around the support frame 8, through the synchronous action of the connecting column 16, the two second rotating rods 9 keep symmetrical movement, ensuring that the angles of the backrest 3 on both sides are consistent.

[0051] The second connecting seat 13 (steel plate) is welded on both sides of the seat frame 2, the sleeve 14 (seamless steel pipe) is rotatably connected with the connecting seat through a pin shaft, the sleeve rod 15 (round steel) is slidably sleeved in the sleeve 14, the other end of the sleeve rod 15 is rotatably connected with the second rotating rod 9 through a pin shaft, the sliding fit of the sleeve 14 and the sleeve rod 15 can compensate for the length change of the second rotating rod 9 during rotation, avoiding transmission jamming, and at the same time enhancing the structural stability (dispersing stress).

[0052] The path of "hydraulic cylinder 18 driving-tooth plate 20 gear 23 transmission-multi-linkage" realizes stepless adjustment of the angle of the backrest 3 (the angle change is proportional to the extension amount of the hydraulic cylinder 18), the user can accurately control the angle through the control panel, and adapt to the fitting needs of different body shapes of the waist and back (such as those who are relatively tall can adjust to half lying to fit the waist, and those who are relatively fat can adjust to a slightly steep angle to fully support the back).

[0053] Secondly, referring to Figure 5 In this embodiment, the massager 11 is fixed on the top of the bottom plate 1 through bolts, located at the front end of the seat frame 2 (corresponding to the leg position), which is a structure of installing eccentric wheel and massage head inside the shell: the shell is welded to the bottom plate 1, the inside is driven by a motor (DC speed reducing motor) to rotate the eccentric wheel, the eccentric wheel drives the massage head (silicone material) to move up and down through the connecting rod, realizing the knocking and kneading massage on the legs, the massager 11 works independently of the adjusting assembly 4, and can be controlled separately, cooperates with the angle adjustment of the backrest 3, and forms multi-site massage of "back + legs".

[0054] Thirdly, referring to Figure 5 and Figure 6 In this embodiment, the massage instrument 12 is installed on the inner side of the backrest 3, and adjusts the position through an adaptive structure to accurately act on the shoulder, neck, waist, back and other parts, and the specific structure and cooperation are as follows:

[0055] The fixed seat 27 and the adjusting cylinder 28: the steel plate skeleton on both sides of the backrest 3 is welded with the fixed seat 27 (steel plate stamping), and the fixed seat 27 is provided with an arc-shaped slot (along the height direction of the backrest 3), and the adjusting cylinder 28 (seamless steel pipe) is slidingly and rotatably arranged in the arc-shaped slot (bearing is arranged in the slot), and the adjusting cylinder 28 can slide up and down along the arc-shaped slot (adjust the height) and rotate around the axis (adjust the angle).

[0056] The adjusting column 29 (round steel) is slidingly sleeved in the adjusting cylinder 28, the top of the column body is welded with a plurality of massage rings 30 (silicone material, with a massage ball arranged inside), the massage rings 30 are distributed along the axial direction of the adjusting column 29 (corresponding to the shoulder, back and waist positions), the bottom of the adjusting cylinder 28 is welded with a cylinder 31 (round steel), the outer side of the cylinder 31 is rotatably sleeved with a connecting cylinder 32 (steel pipe), the bottom of the connecting cylinder 32 is welded with a vertical rod 33 (round steel), the other end of the vertical rod 33 is rotatably connected with a vertical frame 34 of the bottom plate 1 through a pin shaft, and a transmission chain of “vertical frame 34-vertical rod 33-connecting cylinder 32-cylinder 31-adjusting cylinder 28-adjusting column 29” is formed, when the backrest 3 rotates, the vertical rod 33 pulls the connecting cylinder 32, drives the adjusting cylinder 28 to slide along the arc-shaped slot of the fixed seat 27, and the massage rings 30 are adjusted in height synchronously with the change of the angle of the backrest 3 (always aligned with the curve of the human back).

[0057] A circular groove 35 (blind hole) is formed in the connecting cylinder 32, a limiting plate 36 (steel plate) is welded at the bottom of the adjusting column 29, the limiting plate 36 is slidingly arranged in the circular groove 35 (clearance fit), a spring 37 (65Mn material) is welded at the bottom of the circular groove 35, and the other end of the spring 37 is welded with the limiting plate 36, in the natural state, the spring 37 pushes the adjusting column 29 to extend out, so that the massage rings 30 are tightly attached to the human back, when the body size difference of the human body causes the pressure to change, the spring 37 can be extended and retracted to compensate, so that the massage force is not too large or too small.

[0058] The side of the uppermost massage ring 30 (corresponding to the shoulder and neck position) is welded with a sliding column 38 (round steel), the sliding column 38 extends to the outside through a long hole (in the front-rear direction) of the backrest 3, and the tail end is rotatably connected with a first connecting rod 40 (steel pipe) through a pin shaft, a first connecting frame 39 (steel plate bending) is welded at the top of the backrest 3, the first connecting frame 39 is rotatably connected with a second connecting rod 41 (steel pipe) through a pin shaft, and the other end of the second connecting rod 41 is rotatably connected with the first connecting rod 40 through a pin shaft, forming a triangular fine adjustment structure.

[0059] A straight plate 42 (steel plate) is welded at the side of the backrest 3, a threaded handle 43 (45# steel with a knob) is threadedly connected to the straight plate 42, one end of the threaded handle 43 penetrates through the straight plate 42 and is rotatably connected with the second connecting rod 41 through a bearing, rotating the threaded handle 43 can drive the second connecting rod 41 to rotate, and then the first connecting rod 40 is pulled to move the sliding column 38 along the long hole forward and backward, so as to finely adjust the forward and backward positions of the top massage ring 30, so that the massage head can accurately act on the shoulder and neck acupoints, and adapt to the shoulder width difference of different users.

[0060] In addition, referring to Figure 3 In the embodiment, the adjusting assembly 4 cooperates with the backrest 3, the hydraulic cylinder 18 drives the sliding block 19 to move, the toothed plate 20 drives the gear 23 to rotate, the rotating shaft 22 drives the third rotating rod 24 to swing, the connecting column 16 pulls the second rotating rod 9, the second rotating rod 9 and the first rotating rod 7 jointly push the adjusting rod 5, and the backrest 3 rotates around the seat frame 2 hinge. The whole process is rigidly transmitted through the multi-link and the gear 23, the angle of the backrest 3 is steplessly adjusted (without gear jerk), and the transmission on both sides is synchronous (the angle deviation is less than or equal to 1°), thereby ensuring that the user's back is evenly stressed.

[0061] When the backrest 3 rotates, the vertical rod 33 rotates around the vertical frame 34, pulls the connecting cylinder 32, and the connecting cylinder 32 drives the adjusting cylinder 28 to slide along the arc-shaped groove of the fixed seat 27 through the cylinder 31, so that the adjusting column 29 moves with the adjusting cylinder 28, the massage ring 30 is synchronously lifted along the human back curve (always aligns with the waist, back and shoulder positions), and meanwhile, the spring 37 pushes the adjusting column 29 to extend and retract, compensates for the thickness difference of the human body, and ensures that the massage ring 30 is attached. The top threaded handle 43 can independently fine-tune the position of the shoulder and neck massage ring 30, and forms double positioning of “linkage adaptation + precise fine-tuning”.

[0062] The angle adjustment of the adjusting assembly 4 and the position adaptation of the massage instrument 12 are independent and cooperatively matched. When the user adjusts the angle of the backrest 3, the massage instrument 12 automatically adjusts the height and angle according to the back curve, without the need for manual repositioning. The massager 11 works independently and cooperatively with the back massage, covers the main relaxation parts of the whole body, and simulates the “posture adaptation - part precision - moderate force” characteristics of manual massage.

[0063] In addition, referring to Figure 1 In the embodiment, the backrest 3 is at 90° (sitting posture), the massage ring 30 extends out under the action of the spring 37, is attached to the human back, and the massager 11 is in the closed state. The sliding block 19 is located at the retracted limit position of the hydraulic cylinder 18. The user starts the hydraulic cylinder 18 through the control panel, the piston rod extends out to push the sliding block 19 to move along the horizontal column 26, the toothed plate 20 drives the gear 23 to rotate, the rotating shaft 22 drives the third rotating rod 24 to swing upward, the connecting column 16 pulls the second rotating rod 9 to rotate upward around the support frame 8, the second rotating rod 9 and the first rotating rod 7 jointly push the adjusting rod 5, and the backrest 3 rotates backward around the seat frame 2 hinge.

[0064] If the angle needs to be reduced, the piston rod of the hydraulic cylinder 18 is retracted, the sliding block 19 moves reversely, the gear 23 reversely rotates, the third rotating rod 24 swings downward, pulls the second rotating rod 9 to drive the backrest 3 to rotate forward, and the target angle is reached.

[0065] During the rotation of the backrest 3, the vertical rod 33 rotates around the vertical frame 34 with the change of the angle of the backrest 3 → pulls the connecting cylinder 32 → adjusts the cylinder 28 to slide along the arc-shaped slot of the fixed seat 27 (upward or downward) → the adjusting column 29 drives the massage ring 30 to move along the back curve, and always aligns with the waist, back and shoulder positions. If the shoulder and neck massage ring 30 is deviated, rotate the threaded handle 43 on the straight plate 42 → push the second connecting rod 41 to rotate → the first connecting rod 40 pulls the sliding column 38 to move forward and backward along the long hole → adjust the position of the massage ring 30 until it fits the shoulder and neck muscles.

[0066] Turn on the massage instrument 12 and the massager 11, and the massage balls in the massage ring 30 rotate and knead (driven by the built-in motor), and the massager 11 knocks the legs. The user can adjust the angle of the backrest 3 or the massage force again according to the comfort until the relaxation effect is achieved.

[0067] In addition, referring to Figure 3 In this embodiment, the adjusting assembly 4 discards the traditional gear buckle, and realizes stepless change of the angle of the backrest 3 through continuous extension and contraction of the hydraulic cylinder 18. The extension and contraction of the piston rod corresponds to the change of the angle, which can accurately match the waist suspension problem of users of different heights (for example, a user of 180 cm in height adjusts to 110° semi-lie, and the waist is completely fitted).

[0068] The triple cooperation of the sliding of the adjusting cylinder 28 of the massage instrument 12 along the arc-shaped slot + the extension and contraction of the spring 37 of the adjusting column 29 + the top threaded fine adjustment makes the massage ring 30 adapt to the back curve of different body types (thin, standard, obese), and the fitting degree of the massage head to the skin is more than 90%, which ensures that the massage and kneading method acts on the effective muscle group.

[0069] In the multi-connecting rod transmission, the sliding compensation of the sleeve 14 and the sleeve rod 15, the guidance of the horizontal column 26 to the sliding block 19, and the precise meshing of the gear 23 and the toothed plate 20 make the adjusting process smooth and avoid the jerk feeling of traditional gear adjustment, thereby improving the user experience.

[0070] In addition, referring to Figure 1 In this embodiment, the semi-lie massage adjustment process of a user of 185 cm in height is as follows:

[0071] The user sits in the seat 2, the initial angle of the backrest 3 is 90°, and the user feels that the waist is suspended (the gap is about 5 cm). The adjusting assembly 4 is started, the piston rod of the hydraulic cylinder 18 is extended by 50 mm → the sliding block 19 moves along the horizontal column 26 → the toothed plate 20 drives the gear 23 to rotate → the rotating shaft 22 drives the third rotating rod 24 to swing → the second rotating rod 9 pushes the adjusting rod 5 → the backrest 3 rotates backward to 110° (semi-lie posture), at this time, the angle of the backrest 3 is adapted to the height of the user, and the waist is fitted with the backrest 3 (the gap is less than or equal to 1 cm). At the same time, the adjusting cylinder 28 of the massage instrument 12 rotates along the arc-shaped slot upward with the backrest 3, and the position of the massage ring 30 is automatically moved upward to align with the waist and back muscle groups.

[0072] The user feels that the shoulder and neck massage ring 30 is slightly lower, rotates the threaded handle 43, pushes the first connecting rod 40 with the second connecting rod 41, and drives the sliding column 38 to move the top massage ring 30 upward by 10 mm, accurately fits the shoulder and neck junction, and after starting the massage, the kneading method directly acts on the trapezius muscle, and the fatigue relief effect is remarkable.

[0073] Stepless adjustment makes the waist completely fit, avoids the "either too much lying or suspended" problem of traditional gear adjustment, and the massage instrument 12 automatically moves up + manual fine adjustment, ensures accurate massage of the shoulder, neck, waist and back at the same time, and the user satisfaction is improved to 95%.

[0074] The sitting posture massage adjustment process of a user with a relatively fat body (100 kg in weight) is as follows:

[0075] After the user sits in, the gap between the back and the backrest 3 is large (about 8 cm), the angle of the backrest 3 needs to be adjusted, the piston rod of the hydraulic cylinder 18 is retracted by 30 mm, the sliding block 19 moves in the opposite direction, the gear 23 rotates in the opposite direction, the backrest 3 rotates forward to 80°, the back and the backrest 3 are completely fitted, the adjustment column 29 of the massage instrument 12 is compressed under the action of the spring 37, and the thick back muscles of the user are adapted, the massage ring 30 can still be closely fitted, the connecting cylinder 32 rotates with the backrest 3 to pull the adjustment cylinder 28 to slide downward along the arc-shaped groove, and the position of the massage ring 30 moves downward to align the fat accumulation area of the waist.

[0076] The spring 37 compensates for the difference in body type, avoids the failure of the massage ring 30 due to excessive pressure, and after the angle of the backrest 3 is adjusted, the user's back is evenly stressed, and there is no shaking during the massage process, so that safety and comfort are considered.

[0077] Finally, referring to Figure 1 In this embodiment, the adjustment rod 5 and the rotating rod are made of carbon fiber composite material, the weight is reduced by 40%, the rigidity is maintained, the load of the hydraulic cylinder 18 is reduced, the energy consumption is reduced by 15%, the silicone material of the massage ring 30 is upgraded to memory cotton (density 0.3 g / cm 3 ), which can be shaped according to the human body curve, the fitting degree is improved to 98%, and the aging resistance is prolonged to 5 years.

[0078] Working principle:

[0079] The massage chair mechanical execution mechanism based on multi-link adaptive transmission, in use, first backrest 3 is at 90° (sitting position), massage ring 30 is stretched out under the action of spring 37, fits the human body back, massager 11 is in the closed state, sliding block 19 is located at the contraction limit position of hydraulic cylinder 18, the user starts hydraulic cylinder 18 through the control panel, the piston rod stretches out and pushes sliding block 19 to move along horizontal column 26 → gear plate 20 drives gear 23 to rotate → rotating shaft 22 drives third rotating rod 24 to swing upward → connecting column 16 pulls second rotating rod 9 to rotate upward around support frame 8 → second rotating rod 9 and first rotating rod 7 jointly push adjusting rod 5 → backrest 3 rotates backward around chair frame 2 hinge.

[0080] If the angle needs to be reduced, the piston rod of hydraulic cylinder 18 is retracted, sliding block 19 moves reversely, gear 23 reversely rotates, third rotating rod 24 swings downward, pulls second rotating rod 9 to drive backrest 3 to rotate forward, until the target angle is reached.

[0081] During the rotation of backrest 3, vertical rod 33 rotates around vertical frame 34 with the change of the angle of backrest 3 → pulls connecting cylinder 32 → adjusting cylinder 28 slides along the arc-shaped groove of fixed seat 27 (upward or downward) → adjusting column 29 drives massage ring 30 to move along the back curve, always aiming at the waist, back and shoulder positions, if the shoulder and neck massage ring 30 position deviates, rotate threaded handle 43 on straight plate 42 → push second connecting rod 41 to rotate → first connecting rod 40 pulls sliding cylinder 38 to move forward and backward along the long hole → adjust the position of massage ring 30, until it fits the shoulder and neck muscles.

[0082] Turn on massage instrument 12 and massager 11, massage balls in massage ring 30 rotate and knead (driven by the built-in motor), massager 11 knocks the legs, the user can adjust the angle of backrest 3 or the massage force again according to the comfort, until the relaxation effect is achieved.

[0083] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A massage chair mechanical actuator based on multi-link adaptive transmission, characterized in that, Include: The bottom plate (1); Chair (2), the top of the bottom plate (1) is fixedly provided; Backrest (3), the side of the chair (2) is rotatably provided; Adjusting assembly (4), the adjusting assembly (4) is installed on the bottom plate (1), the adjusting assembly (4) includes adjusting rod (5), the bottom of the adjusting rod (5) is fixedly provided on both sides of the backrest (3), the bottom of the adjusting rod (5) is fixedly provided with first connecting seat (6), the first connecting seat (6) is rotatably provided with first rotating rod (7), the top of the bottom plate (1) is fixedly provided with support frame (8), the support frame (8) is rotatably provided with one end of the first rotating rod (7), the support frame (8) is rotatably provided with second rotating rod (9), and the second rotating rod (9) is coaxially provided with the first rotating rod (7), the top of the bottom plate (1) is fixedly provided with driving assembly (10), the driving assembly (10) is rotatably provided with the second rotating rod (9); Massager (11), the massager (11) is fixedly provided on the top of the bottom plate (1), and the massager (11) is located at the front end of the chair (2); And Massage instrument (12), the massage instrument (12) is installed on the backrest (3).

2. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 1, wherein, The driving assembly (10) includes second connecting seat (13), the second connecting seat (13) is fixedly provided on both sides of the chair (2), the second connecting seat (13) is rotatably provided with sleeve (14), the sleeve (14) is slidably provided with sleeve rod (15), the second rotating rod (9) is rotatably provided with connecting column (16), and the sleeve rod (15) is rotatably provided with the second rotating rod (9).

3. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 2, characterized in that, The top of the bottom plate (1) is fixedly provided with mounting frame (17), the mounting frame (17) is fixedly provided with hydraulic cylinder (18), the output shaft of the hydraulic cylinder (18) is connected with sliding block (19) through key, the top of the sliding block (19) is fixedly provided with toothed plate (20), the toothed plate (20) is provided with tooth (21), the support frame (8) is rotatably provided with rotating shaft (22), the rotating shaft (22) is fixedly provided with gear (23) corresponding to the number of toothed plates (20), and the gear (23) is matched with the tooth (21).

4. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 3, characterized in that, The two sides of the rotating shaft (22) are fixedly provided with third rotating rod (24), the third rotating rod (24) is located on both sides of the gear (23), and one end of the third rotating rod (24) is rotatably provided with the connecting column (16).

5. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 4, wherein, The top of the bottom plate (1) is fixedly provided with fixed block (25), the fixed block (25) and the mounting frame (17) are fixedly provided with horizontal column (26), and the horizontal column (26) is slidably provided with the sliding block (19).

6. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 5, wherein, The massage instrument (12) includes two fixed seats (27) fixedly arranged on both sides of the backrest (3), an adjusting cylinder (28) rotatably arranged on the fixed seat (27), the adjusting cylinder (28) is slidably arranged with the fixed seat (27), an adjusting column (29) is slidably arranged in the adjusting cylinder (28), and a plurality of massage rings (30) are fixedly arranged between the top portions of the adjusting column (29).

7. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 6, characterized in that, A cylindrical column (31) is fixedly arranged between the bottom portions of the adjusting cylinder (28), a connecting cylinder (32) is rotatably arranged on the cylindrical column (31), a vertical rod (33) is fixedly arranged at the bottom of the connecting cylinder (32), a vertical frame (34) is fixedly arranged at the top of the bottom plate (1), and the bottom of the vertical rod (33) is rotatably arranged with the vertical frame (34).

8. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 7, characterized in that, A circular groove (35) is formed in the connecting cylinder (32), a limiting plate (36) is slidably arranged in the circular groove (35), the limiting plate (36) is fixedly arranged with the adjusting column (29), one end of a spring (37) is fixedly arranged at the bottom of the circular groove (35), and the other end of the spring (37) is fixedly arranged with the limiting plate (36).

9. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 8, wherein, A sliding column (38) is rotatably arranged on the massage ring (30) at the top, the top of the sliding column (38) penetrates through the backrest (3) and extends to the outside, a first connecting frame (39) is fixedly arranged at the top of the backrest (3), a first connecting rod (40) is rotatably arranged at the top of the sliding column (38), a second connecting rod (41) is rotatably arranged on the side surface of the first connecting rod (40), and one side of the second connecting rod (41) is rotatably arranged with the first connecting frame (39).

10. The multi-link adaptive transmission based mechanical actuator of a massage chair according to claim 9, wherein, A straight plate (42) is fixedly arranged on the side surface of the backrest (3), a threaded handle (43) is threadedly arranged on the straight plate (42), one end of the threaded handle (43) penetrates through the straight plate (42) and is rotatably arranged with the second connecting rod (41).

Images